US699873A - Speed-controlling and reversing mechanism. - Google Patents

Description

No. 699,873. Patented May l3, I902.

M. C. JOHNSON.

SPEED CONTROLLING AND REVERSING MECHANISM.

(Application filed Jan. 18, 1902.) (N0 Model) 5 S eets-Sheet fnvenzfor: J- 6 J07??? Jon,

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Patented May l3, I902.

M. C. JUHNSUN.

S PEED CONTROLLING AND REVERSING MECHANISM. I (Application filed Jan. 18, 1902.\ (No Model.) 5 Sheets-Sheet 2.

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No. 699,873. Patented May l3, I902.

M. c. aonugou. SPEED CONTROLLING AND REVERSING MECHANISM.

(Application filed Jan. 18, 1902.; (Nnmfldeh) Q 5 Sheets-Sheet 3.

q WW No. 699.873. Patented May l3, I902.

M. c. JOHNSON.

SPEED CONTROLLING AND REVERSING MECHANISM.

(Applicafiion filed Jan. 902.) (No Model.) 5 Sheets-Sheet 4.

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Patented May 13, I902.

m. c. JOHNSON.

SPEED CONTROLLING AND REVERSING MECHANISM.

(Application filed Jun. 1902.) 4

5 Sheets-Sheet 5,

(No Model.)

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Unrrnn STATES rrrcn.

SPEED-CONTROLLING AND REVERSING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 699,873, dated May 13, 1902.

Application filed January 18, 1902. Serial No. 90,261. (No model.)

To aZZ whom may concern:

Be it known that I, MosEs O. JOHNSON, a citizen of the United States,residing at Hart-- ford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Speed-Controlling and Reversing Mechanism, of which the following is a specification. 1

My invention relates to speed-controlling and reversing mechanism; and it has for its; object the provision of improved mechanism of this character which will be of simple con.-

- struction, reliable in operation, and will permit the desired speed to be given to the driven shaft when rotated in either direction.

Primarily my invention is designed for use with motor conveyances (either land or water). of any desired kind. In these conveyancesfor instance, an automobile or a launchit is frequently desirable to drive the vehicle forward at full speed and then again at a reduced speed and also quickly to reverse the direction of its motion. My invention is intended to carry out these results in a simple way by an arrangement of mechanism under the control of the chauffeur or engineer, and this mechanism is so constructed and arranged that said results may be accomplished practically without noise and with a minimum of frictional resistance and so that the desired changes in speed or of the direction of motion may be quickly effected.

A further object of the invention isthe provision of mechanism for rotating the driven shaft in first one direction and then in the other direction, said mechanism being under the control of a cam of peculiar construction, as will be hereinafter described.

A further object of the invention is the provision of gearing so arranged and combined with the driven shaft that when said shaft is rotated at full speed forward all of said gearing will remain idle, thereby avoiding noise and an unnecessary expenditure of power in driving the same.

Other objects of the invention will be set forth in the detailed description hereinafter given. H

In the accompanying drawings, Figure 1 is a side elevation of the preferred form of my invention with the casing in section. Fig. 2

are. diagrammatic views of a form of cam which may be employed. Fig. 11 is a side view, with the casin g partially broken away,

of a modification of the invention.

Fig. 12 is a horizontal section on line 12 12 of Fig. 11. Fig. 13 is an end elevation of the modified construction. Fig. 14 is ahorizontal sec- 3 tion thereof on line 14 14 of Fig. 13; and Fig.

15 is a detail view, hereinafter described.

Like characters designate similar parts throughout the several views.

Referring to the drawings, the numeral 1 designates the frame of my improved ma chine, and this frame, while shown in the form of a casing for the reception of a lubricant for the parts to work in, may be of any desired construction.

Designated by the numeral 2 is a sprocketwheel or it may be other gear having a hub 2, said gear being driven by any suitable means connected with the motor, which may be of any desired type. This hub 2 is splined or otherwise connected to a sleeve or quill 3, thereby continuously rotating said sleeve when power is applied to the gear 2. Mounted within the sleeve or quill 3 is a driven shaft 4., which maybe of any required length and in the exemplification given has splined to its end a device 5, having a hub 5, said device being shown as a sprocket-wheel, although it may be a gear, pulley, or other element, for transmitting motion from the driven shaft to the device or devices for propelling the conveyance. In some instances the. sprocket-Wheel or power-tran emitting element 5 may be omitted and the shaft 4. connected directly to a propeller or other instrumentality it is desired to actuate, the invention not being limited to the sprocketwheel illustrated nor to any particular device secured to said shaft. On one side the frame or casing 1 is provided with a tubular projection 6 for receiving a bushing 6, flanged on its inner side at 6 said bushing serving as ajournal-box for the sleeve or quill 3, and on its other side with a hollow projection 7, in which is fitted a bushing 8, acting as a journal-box for the driven shaft 4.

Splined or otherwiseconnected to the sleeve or'quill 3 is the hub 9 of a friction-cup 9, and, as will be obvious, when said cup is connected to the shaft 4 the latter will be driven at full speed in a forward direction, either by a motor connected directly with the quill 3 or indirectly to said quill bya sprocketchain (not shown) and the sprocket-wheel 2, as may be desired.

Loosely surrounding the hub 9 of frictioncup 9 is a sleeve 10, having a small gear 11 at one end and a large gear 12 at its opposite extremity. Formed in the inner face of the gear 12 is a concentric groove 12, and fitted in sockets of said gear are clutch-pins 13, having heads 13, the latter being in the groove 12, as illustrated in Fig. 2. Projecting from the Web of the friction-cup 9 are clutch-pins 14, which when the sleeve is shifted on the hub 9', by means hereinafter described,will engage with said clutch-pins 13.

Within the friction-cup 9 is an expansionring 15, secured to a hub or carrier 16, and while this ring may be actuated in any desired way or another suitable clutch device may be substituted therefor, if desired, I have shown in Fig. 15 as a means for accomplishing this result a pair of levers 17, pivoted to the expansion-ring. For actuating these levers, and thereby locking the expansion-ring tothe friction-cup 9, a Wedge-block 18 is secured to a shifting-ring19, said ring being capable of reciprocatory movement upon the hub or carrier 16, as will hereinafter be described. This hub or carrieris provided with longitudinal open slots 20 for the reception of sliding clutch-pins 21, and these pins are actuated at the proper time by studs 22, projecting from the inner side of the shifting ring 19, the shanks of said studs passing through the slots and entering the pins, as illustrated by dotted lines in Fig. 2. Fitted in a groove of the shifting ring 19 are shoes 23, and said shoes are connected by bolts 24 to the arms 25 of a yoke or forked lever 25, said lever having a hub 26, which is mounted for rocking movement upon a rod 27, extendiug transversely of the casing or frame 1, as illustrated in Fig. 5, said rod passing through a hollow boss 27 of the frame and through a projection 34*, rising from the bearing 34 and being secured in position by a pin 27 as shown in Fig. 4. Projecting from the hub of this forked lever is an arm 28, articulated at 29 to the link 30, and at about its middle portion this link is provided with a stud 31, which carries an antifrictiomroll'er 31, (see Figs. 1 and 4,) working in 'the groove 32 of a cam 32 of peculiar construction, said cam having a hub 32', secured 'to' a rock-shaft 33', journaled in bearings 34 34 of the frame. At its end opposite arm 28 the link is articulated to a pin 35 on an'arm 35, an angular extension 36 of projection 42 of the bearing 34, said rod being secured in place by a pin 43, as shown in Fig. 4. Projecting from hub 39 is an arm 44, bifurcated at its free end at 44 to fit over the pin 35 of arm 35. By pivoting the link 30 to the arm 28 at one end and to the swinging arm 35 atits opposite end the pin 31, carried by said link, is always kept central in the cam-groove, thus avoiding any binding action of said pin or the roller 31, carried thereby, against the walls of said groove.

Fixedly secured in the frame or casing 1 is a rod orshaft 45, and loosely mounted thereon is a sleeve 46, having a fixed gear 47 at one end, a loose gear 48 at its opposite end, and a loose gear 49 intermediate the gears 47 v and 48.

Loosely mounted on the driven shaft 4, adjacent to the carrier 16, is a gear 50, the web of which is provided with clutch-pins 51 for a purpose hereinafter set forth, and said gear is in mesh with the gear 47, fixed to sleeve 46. (See Figs. 2 and 5.) in Fig. 2 and by dotted lines in Fig. 5 is an idler-pinion 52, which is in mesh with the gear 11 of sleeve 10 and with the gear 48, loosely mounted on sleeve 46.

Each of the gears 48 and 49 is formed-as a shell or friction-cup for the reception of expansion- rings 53 and 54, respectively, and these rings carry pivoted levers 55 55, respectively, of the kind shown in Fig. 15 and clearly disclosed in my patent dated August 25, 1891, No. 458,423.

Secured to the sleeve 46 by a spline 55 is a sleeve 56, to which the expansion- rings 53 and 54 are attached and upon which is mounted a shipper-ring 57, carrying on its under side wedge-blocks 58 59, respectively, for actuating, when said ring is shifted, the pivoted levers 55 or 55, and thus causing said levers to expand the rings and lock either the gear 48 or the gear 49 to the sleeve 46. The shipper-ring 57 is grooved to receive shoes 60, and over pins 61, projecting from said shoes, are fitted the eyes of a fork 62, said fork having a hub 62, mounted on a rod 40. Projecting from said hub is an arm 63, having a slot 63 for the reception of the end of a link 64, secured in said slot by a pivot pin or bolt 65, said link carrying intermediate its length a pin 66, upon which may be fitted an antifriction-roller 67, working in the groove of the cam 32, as shown in Fig. 4. At its end opposite the yoke 62 link 64 is pivoted to a rocking arm 68, the stem 68 of which is journaled in a hollow stud 69, projecting from the inner side of the frame, and is secured Shown by full lines therein by a pin 68 as shown in Fig. 5, in virtue of which construction the link will swing without affecting the position of the roller in the cam-groove, as heretofore described with reference to thelink 30 and pin 31.

Secured to one end of the cam-shaft 33 is a toothed segment 70, andv for actuating this segment any desired means, either manually or automatically operated, may be employed; but I have shown for the purpose a curved rack or sector 71, the body of which projects from a hub 71, sleeved upon a stud 72 of frame 1, said hub having integral therewith or attached thereto a hand-lever 73, as shown in Figs. 3 and 4.

In the operation of the preferred form of my invention should it be desired to drive the conveyance full speed forward the lever 73 is shifted to the position represented in Fig. 3, and this action causes the rack or sector to turn the segment and shaft 33 toward the right and the cam 32 to act upon pin 31 and shift the link 30, arm 28, fork 25, and shiftable ring 19, carrying wedge-block 18, the latter actuating the pivoted levers 17 and causing them to expand the split ring 15 and lock the body 16 (splined to shaft 4) to the friction-cup 9, the sleeve 9 of such cup being splined to the quill 3, as before stated. As the link 30 is moved to the right in the manner above set forth the fork 39 is shifted by the connections described to the left, thereby sliding the sleeve 10, carrying gears 11 and 12, along the hub 9 and disconnecting the clutch-pins 13, carried by gear 12, from the clutch-pins 14 of the friction-cup 9, as shown in Fig. 2. Now by applying power in any de sired manner to the quill 3 said quill, the sleeve 9, splined thereto, the friction-cup 9, clutched tothe carrier or body 16, and the driven shaft 4, to which said carrieris splined, will be driven at full speed in a forward direction. When the cam 32 is shifted to accomplish the results just described, it is moved from the position shown in Fig. 6 in the direction of the arrow F in the diagrams Figs. 7, S, and 9 and the active portion Ct of its groove has caused the pin 31 to move to the right from the position illustrated by doted line b to the position illustrated by the full lines of said pin in Fig. 9, it being understood, of course, that Fig. 6 represents the neutral or non-active position of said cam with all the parts of the mechanism at rest. \Vhen this has been accomplished, it will thus be seen that all of the mechanism within the casing or frame is idle with the exception of the shaft 4, the quill 3, and the parts connecting said shaft and quill,as above described, thereby avoiding noise and friction and the jar incident to the rotation of gearing while the conveyance or other i11- strumentality is being propelled in the usual way. Should it be desired to change the speed of the conveyance in a forward direction, the lever 73 is first shifted to turn the cam 32 about forty-five degrees to the stop position, (represented by the diagram Fig. 8,) and during this motion of the cam the active portion a thereof will actuatethe link 30 and through the connections described will shift the sleeve 10 along the hub 9 and the shifting ring 19 along the carrier 16, thereby throwing the clutch-pins 13 and 21 into po sition to engage with the complemental clutchpins 14 of friction-cup 9 and the pins 51 of the gear-wheel 50. This action places the parts in position for actuating the shaft 4 in a slow forward direction, and after it has been accomplished the cam 32 is shifted another forty-five degrees to the left, or to the position represented by the diagram Fig. 7, and as it turns to said position its active portion 0 will actuate the pin 66 of the link 64 to the position represented by full lines in said Fig. 7, and this link will through the connections described reciprocate the shifting ring 57 toward the rightin Figs. 1 and 2 and will cause the wedge-block 59 of said ring to operate the pivoted levers 55, which will expand the expansion-ring 54 and lock the gear 49 to the sleeve 46, thereby causing said sleeve to be turned and its pinion 47 to rotate the gear 50, now connected to the shaft 4 by the pins 21 and 51, (the carrier 16, in which pins 21 are mounted, being splined to the shaft,) and thereby rotate said shaft slowly in a forward direction. Should it be desired to reverse the motion of the conveyance, the cam 32 is again shifted forty five de grees, causing the active portion d of its surface to bring the pins 31 and 66 to the stop position illustrated in Fig. 6, where all the mechanism is at rest, and is then shifted another forty-five degrees to cause its active portion 6 to shift the pin 66, link 64, connected to said pin, and yoke 62, thereby throwing the shifting ring 57 to the left in Fig. 2 and causing the wedge-block 58 to actuate the levers 55, operate the expansionring 53, and lock the sleeve .56, splined to the hollow shaft 46, to the gear 48, and inasmuch as said gear 48 is in mesh with theidler 52 and as the latter is in engagement with the pinion 11 of sleeve 10, now clutched to the friction-cup 9 in the manner above stated, (the hub of said cup being splined to the quill 3,) it will be seen that as said quill is rotated it will through said parts actuate the sleeve 10 and through the gears 11,52, 48, and47 impart a reverse motion to the gear 50, now clutched to the carrier 16, splinedto the shaft, and will thereby rotate said shaft in a reverse direction. The gear 49 in mesh with gear 12 of sleeve 10 rotates idly on the sleeve 46, as will be obvious, when this reverse connection is made.

It will be understood from the above description that my improved cam, which has a circumference of three hundred and sixty degrees, has a plain or non-active groove for one hundred and eighty degrees of said circumference and that the remaining one hundred and eighty degrees of the circumference IIO of the cam is divided into four active parts of forty-five degrees each, the'construction being such that before any change in the mode of operation of the mechanism is established said mechanism will be first brought to a stop position. This is important for many reasons, for, as will be obvious, if the chauffeur or engineer should through excitement or fear become obfuscated and not be aware of what he is doing any movement by him of the lever 73 to shift the cam will first bring the mechanism to a full stop, and thus will avoid all danger of accident.

In practice the lever 73 will be combined with the usual quadrant or other device upon which the symbols for indicating the motion of the lever will be placed, and common adjuncts will be employed with said lever for securing it temporarily in position when the cam is actuated step by step in the manner above described. The cam may eitherbelefthand, as shown, or right-hand, as desired, for one construction will work as well as the other.

In the modification represented by Figs. 11 to 14, inclusive, some'of the parts illustrated in the views of the preferred form of the invention are changed and others are omitted, and no provision is made for stopping the motion of the gearing on the counter-shaft or sleeve while the driven shaft is actuated at either slow or full speed in its forward direction. In the views of this modification the elemental parts, like those shown in the mechanism of the preferred form, are designated by the same numerals; but where there has been a change in any part it is described and indicated on the drawings by a different character.

In the figures just described the frame or casing 1, sprocket-wheel 2 2, quill 3, driven shaft 4, sprocket-wheel 5 5, bearings 6, 6 and 8, tubular bosses 6 and 7, friction-cup 9, having h'ub 9, splined to quill 3, expansion-ring 15, carrier orbodylG, splined to driven shaft 4and to which said expansion-ring is secured, levers 17, pivoted to the expansion ring, wedge-block 18, shifting ring 19, shoes 23, yoke-25, rod 27, arm 28, link 30,,carrying pin 31, cam 32, shaft 33, bearings 34 34, rocker 35,slceved upon rod 36,tubular sleeve or shaft 46, carrying gear 47, gears 48 and 49, loosely mounted on said shaft 46, expansion rings 53 54, sleeve 56, splined to tubular shaft 46, wedge-blocks 58 59, pivoted levers 55 55', stationary shaft or rod 45, shifting ring 57, link 64, carrying pin .66, upon which is mounted antifriction-roller 67, rod 40', yoke 62, rocker 68 68, lever 73, sector 71, stud 72, and gear 70 are. like thoseindicated in Figs. 1 to 10, inclusive, of the drawings and are designated by the same numerals. In the modification the sliding sleeve 10, with its gears 11 and 12, the clutch- pins 13 and 14, and the clutchpins 21 and 51 are omitted, and in place of the loose gear on driven shaft 4 a gear 74, keyed or otherwise secured to said shaft at 75, is employed, and the friction-cup 9 is provided with a peripheral gear 76, in mesh withthe gear 49 of sleeve 46 and also carries at its end opposite to said gear 76 a small gear 11, in mesh with an idler 52, which in turn inter-meshes with a larger gear 48, loosely mounted upon said tubular shaft 46. To the shaft 33 is secured the cam 32, having groove 32 one half or one hundred and eighty degrees of which is formed with plain walls, as shown in Fig. 11, and the other half of which is divided into right-and-left inclined portions a c d c, as illustrated in Fig. 7. Fitted in the cam-groove32 are the antifriction-rollers 31 67, mounted, respectively, upon the pins 31 and 66 of the links 30 and 64, as illustrated in Fig. 14, and these links are connected to the arms 28 and 63 of the yokes 25 and 62 and operate in the same manner as they do in the preferred form of the invention. In the position of the parts represented in the various figures of the modification the mechanism is shown as arranged to impart a slow-speedforward movement to the driven shaft 4, and the shifting ring 57 has been moved to actuate the levers and thereby clutch the gear 49 to the sleeve 56, said sleeve being splined to the shaft 46 at 80, as illustrated in Fig. 12, and the lever 73 has been turned to cause its sector 71 to rock the segment and cam-shaft 33 to the position represented in Fig. 13. Inasmuch as power is applied to the quill 3 by sprocketwheel 2 or in any other desired manner and as said quill is splined to the hub 9 of friction-cup 9, and it therefore continuously rotates with said quill, it will be seen thatthe gear 76 on said friction-cup will rotate gear 49, now locked to the tubular shaft 46, thereby causing said shaft to turn and its gear 47, in mesh with the larger gear 74, keyed to the shaft 4, to rotate said shaft slowly in a forward direction. Should it be desired to rotate shaft 4 at a fast speed forward, the lever 73 is shifted to its extreme position toward the right in Fig. 13, thereby causing the inclined portion a of the cam 32 to act upon the antifriction-roller 31 of pin 31 and to shift the link 30 to the right, and said link being articulated to the arm 28 of yoke 25 will actuate the shiftingring 19 toward the left and force, the wedge-block 18, carried by said ring, into contact with the pivoted levers 17, thereby expanding the expansion-ring 15 and locking the carrier or body 16 to the friction-cup 9. In this fast forward position of the gearing the quill 3, being continuously rotated, as stated, and being splined to the hub 9 of friction-cup 9, will rotate the carrier 16, and consequently through said carrier the shaft 4, directly in a fast forward direction, and preceding the clutching of the friction-cup 9 to the carrier or body 16 the inclined portion 0 of the cam 32 will act upon the roller 67 of pin 66 and will shift link 64 and ring 57 to a neutral position between the two gears 48 and 49, as shown in Fig. 9. Should it be desired to reverse the movement of the driven shaft 4, the lever 73 is shifted to its extreme position toward the left, thereby causing the part c of cam 32 to actuate the yoke 62 and force the shifting ring 57, carrying wedge'block 58, in the same direction, thus operating the pivoted levers 55 and expansion-ring 53 and locking the gear 48 to the shaft 46. Just before this action occurs another portion of the cam, of course, acts upon the link and forces the shifting ring 1 9 toward the right, thereby releasing through the pivoted levers described the expansionring 15. WVhen the mechanism is in this reverse position, the continuously-rotated quill 3, splined to hub 9, will rotate said hub and the gear 11 attached thereto and through idler 52 will impart rotary movement to the gear 48, now locked to the tubular shaft 46, and through said shaft andits gear 47 to the gear 74, keyed to the shaft 4, thereby rotating said shaft 4 in a reverse direction, as stated. \Vhen the connections above described are made, it will be seen that when the shaft is driven slowly in a forward direction the gear 49 is clutched to tubular shaft 46 and that the gear 48 rotates loosely on said shaft, that when said shaft 4 is driven at fast speed forward the gears 48 and 49 andthe tubular shaft 46 and its gear 47 rotate idly without imparting movement to any of the parts, and that when the mechanism is set for a reverse motion of the driven shaft 4 the gear 49 rotates idly on said shaft 46. In this construction, as in the preferred form illustrated and above described, the cam 32 is of such form that upon any movement of the lever 73 to actuate the same and turn the shaft 33 and said cams the mechanism will be brought first to a full stop. Then the parts it is desired to employ for rotating the shaft at one speed will be thrown into action. Then the mechanism will again be brought to a stop. Then the parts for rotating the shaft at another speed will be thrown into action. Then another stop will be made; and, finally, the parts for reversing will be thrown into action. Therefore it will be seen that should the chauffeur or engineer become bewildered through excitement or otherwise, no matter how the lever 73 is thrown, provision is made for the full stop of the mechanism, thereby avoiding all liability of danger to passengers and of accident to the conveyance. In this form of my invention while it is fully operative to produce the desired results I regard the continuously-rotating gears as somewhat objectionable on account of the noise and frictional wear and tear attendant thereupon, and consequently in the preferred form of the invention provision is made for keeping said gears idle when the shaft 4 is being driven full speed ahead.

My invention is not limited to the precise construction illustrated and described nor to any specific kind or proportionate arrangement of gearing. Neither is it limited to the arrangement of the various parts illustrated in the two forms thereof nor to any specific means for applying power to the mechanism.

for, as will be obvious, many mechanical changes may be made without departure from the scope thereof. So, too, the cam mechanism and the parts connected therewith may be variously modified and any forms of clutches suitable for the purpose may be employed as substitutes for those shown without departure from the invention.

In my application filed in the United States Patent Office December 11, 1901, Serial No. 85,577, certain features of the present invention are set forth, and no claim is herein made to the subject-matter covered by said application.

Having thus described my invention, what I claim is 1. The combination, with a shaft, of a quill loose on the shaft; means for rotating the quill; a clutch element sleeved upon and connected to the quill; gearing carried by said clutch element; a complemental clutch element; a carrier for said complemental clutch element, said carrier being rigid with the shaft; a gear on the shaft adjacent to said carrier; means for actuating the complemental clutch element to lock said clutch element sleeved upon the quill to the carrier, and means for connecting the gearing of the clutch element sleeved upon the quill with the gear upon the shaft.

2. The combination, with a shaft, of a quill loose on said shaft; means for rotating said quill; a clutch element sleeved upon and connected to the quill; a carrier rigid with the shaft; a complementalcluteh element mounted on the carrier; means for actuating said complemental clutch element; and shaft-reversing mechanism controlled by the quill.

3. The combination, with a shaft, of a quill loosely mounted on said shaft; a device socured to said quill; a gear carried by said device; a carrier secured to the shaft; mechanism for clutching said device to the carrier; means for actuating said clutching mechanism; a counter-shaft; a gear loosely mounted on said counter-shaft; means for connecting said gear to the counter-shaft; a gear fixedly mounted on the counter-shaft; and mechanism connecting said gear with the shaft.

4. The combination, with a driven shaft, of a quill loosely mounted on said shaft; adevice having ahub secured to said quill; a countershaft; gearing loosely mounted on said countershaft; a gear fixed to the counter-shaft; a gear carried by the driven shaft and in mesh with said fixed gear; gearing in mesh with the loose gears of the counter-shaft, said gearing being carried by the device having a hub secured to the quill; an idler for connecting one of the gears carried by the hub with one of the gears of the counter-shaft; and means for connecting the gear in mesh with the idler with said counter-shaft.

5. The combination, with a driven shaft, of a quill loosely mounted on said shaft; means for rotating the quill; a device having gears carried by the quill; a counter-shaft; gears loosely mounted on said counter-shaft; a gear,

fixed to said counterfshaft; an idler between one of the gears of the device on the quill and one of the loosely-mounted gears on the counter-shaft; a gear carried by the driven shaft and in mesh with the fixed gear of the coun-.

v with another member of the gearing carried by the sleeve; means for alternately clutching the loosely-mounted gears to the countershaft; a cam-shaft; a cam carried by said cam-shaft; lever-and-link connections between said cam and theclutch-actuatingdevices of the counter-shaft; a fixed gear carried by the counter-shaft; a gear in engagement with said fixed gear; means for securing said gear to the driven shaft; and means for actuating the cam-shaft.-

7. The combination, with a shiftable element, of means for actuating said element; a link connected to said actuating means; a rocker movably connected to and supporting said link; a cam; a device carried by the link and actuated by said cam; and means for actuating said cam.

8. The combination, with a shiftable element, of a yoke for actuating said element; anarm projecting from said yoke; alink articulated to the arm; a rocker pivoted to the link; a cam; a device carried by the link and ,bearing against the cam; and means for actuating said cam.

9. The combination, with a driven shaft, of mechanism for actuating said shaft at one speed in a forward direction; mechanism for actuating said shaft at-a difierent speed in a forward direction; mechanism for reversing the rotation of said shaft; a cam; links carrying devices acted upon by said cam; means for connecting one of said links with the reversing mechanism; means for connecting the other link with the mechanisms for driving the shaft in a forward direction; and rockers to which said links are pivoted.

10. The combination, with a driven shaft, of a counter-shaft; gearing connecting said driven shaft and counter-shaft; means for locking an element of said gearing to the counter-shaft when it is desired to rotate the driven shaft at a slow speed in a forward direction; means for connecting another element of said gearing to the counter-shaft when it is desired to reverse the rotation of said driven shaft; means for rotating the driven shaft at a fast speed in a forward direction; a cam; and mechanism for connecting said cam with the means for imparting rotary movement to said shaft.

11.. The combination, with a driven shaft, of a carrier secured to said driven shaft; a friction-cup; a continuously-driven quill to which said cup is connected; an expansionring-between the friction-cup and carrier; a counter-shaft; gearing between said frictioncup and the counter-shaft; a fixed gear carried by the counter-shaft; a gear carried by the driven shaft and in engagement with said fixed gear of the counter-shaft; means for connecting the gear carried by the driven shaft to said driven shaft; means for alternately clutching certain gears of the countershaft to said shaft; means for actuating the expansion-ring in the friction-cup; a cam; and con nections from the cam for actuating all of said means.

12. The combination, with a driven shaft, of a quill loose on said shaft; means for rotating the quill; a sleeve secured to said quill; a counter-shaft; a pair of gears loosely mounted on said counter-shaft; a pair of gears carried by the sleeve on the quill, one of which is in engagement with one of the looselymounted gears of the counter-shaft; an idler in engagement with the other loosely-mounted gear of the counter-shaft and with the other gear of the pair carried by the quill; gearing for connecting the counter and driven shafts; devices for clutching the looselymounted gears to said counter-shaft; and a cam for actuating said devices.

13. The combination, with a driven shaft, of a quill loose on said shaft; means for rotating the quill; a hub or carrier secured to the driven shaft; means for connecting said quill to the hub or carrier; a counter-shaft; a gear fixed to said counter-shaft; a gear on the driven shaft; means for connecting said gear to the driven shaft; gears loosely mounted on the counter-shaft; means for clutching either of said gears to the counter-shaft; a cam and connections for actuating said means; gears carried by the quill; and a gear for connecting one of said gears carried by the quill with one of the gears of the counter-shaft.

14. The combination, with a driven shaft, of a quill loose on said driven shaft; means for rotating said quill; a hub or carrier secured to the driven shaft; means for connecting the quill to said hub or carrier to rotate said driven shaft at a fast speed in a forward direction; meansfor connecting the quillwith the driven shaft to rotate the driven shaft at a difierent speed in a forward direction; and means controlled by the quill for reversing the movement of the driven shaft.

15. The combination, with a driven shaft, of a quill loose on said shaft; means for rotating the quill; a pair of gears controlled by the quill; means for connecting the quill to the driven shaft to turn said shaft at a fast speed in a forward direction; a counter-shaft; a pair of gears loosely mounted on said counter-shaf t, one of said gears being in mesh with one of the gears controlled by the quill; a gear connecting the other loose gear of the counter-shaft with the other gear controlled by the quill; clutch connections for clutching said loosely-mounted gears to the countershaft; means for actuating said connections; a gear fixed to the counter-shaft; and means connecting said gear with the driven shaft.

16. The combination, with a driven shaft, of a quill; means for rotating said quill; a sleeve rotating with the quill; means for connecting said sleeve to the driven shaft to drive the same at a certain speed; means for connecting said quill with the driven shaft to rotate the same at a different speed; means for connecting said quill with the driven shaft to reverse the motion thereof; a cam; and devices actuated by said cam for effecting the connections set forth.

17. The combination, with a driven shaft, of a quill loosely mounted on said shaft; a hub or sleeve secured to the quill; a sleeve mounted for reciprocatory movement on said hub or sleeve; clutch devices for connecting the sleeve with the hub; gearing carried by the reciprocatory sleeve; a counter-shaft; a gear loosely mounted upon the counter-shaft and in engagement with an element of the gearing of the sleeve; a gear fixed to the counter-shaft; a gear in engagement With said fixed gear and carried by the driven shaft; and means for connecting said lastnamed gear to said driven shaft.

18. The combination, with a driven shaft, of a quill loosely mounted on said shaft; a hub secured to the quill; a reciprocatory sleeve carried by the hub; means for recipro eating said sleeve; clutch devices connecting said sleeve and hub; a counter-shaft; gearing for connecting the sleeve with said counter-shaft; a fixed gear carried by the countershaft; a gear in engagement with said fixed gear, and carried by the driven shaft; and means for connecting said gear to the driven shaft.

19. The combination, with a shaft, ofa quill loosely mounted on said shaft; means for rotating said quill; a hub splined to the quill; a reciprocatory sleeve mounted upon the hub; means for clutching said reciprocatory sleeve to the hub; a gear carried by the sleeve; acounter-shaft; agear loosely mounted on said counter-shaft; means for clutching said gear to the counter-shaft; a fixed gear carried by the counter-shaft; a gear loosely mounted on the driven shaft; and means for clutching said gear to the driven shaft.

20. The combination, with a driven shaft, of a quill loose on said shaft; means for retating the quill; a hub splined to said quill; a friction-cup carried by the hub; an expansion-ring located Within said friction-cup; a

carrier secured to the driven shaft; means for locking the expansion-ring to the frictioncup; a sleeve mounted on the hub of the friction-cup; means for reciprocating said sleeve; clutch devices carried by the sleeve; clutch devices carried by the friction-cup; gearing carried by the sleeve; a counter-shaft; gearing carried by said counter-shaft; means for locking said gearingto the countehshaft; and gearing connecting the counter-shaft With the driven shaft.

21. The combination, with a shaft, of a quill loosely mounted on said shaft; means for rotating the quill; a friction cup having a hub secured to the quill; clutch devices carried by said friction-cup; a sleeve mounted on the hub; clutch devices carried by said sleeve; gearing also carried by the sleeve; means for reciprocating the sleeve; a counfer-shaft; gears loosely mounted on said counter-shaft; devices for locking said gears to the counter-shaft; a gear intermediate one of said countershaft gears and one of the gears carried by the hub; a fixed gear carried by the counter-shaft; a gear in engagement with said fixed gear and loosely mounted on the driven shaft; and means for connecting said gear to said driven shaft.

22. The combination, with a shaft, ofa quill loosely mounted on said shaft; a friction-cup having a hub splined to said quill; means for rotating the quill and thereby the frictioncup; a clutch device within the friction-cup, means for actuating said clutch device; a sleeve mounted on the hub; means for reciprocating said sleeve; clutch devices carried by the sleeve and adapted to engage with the clutch devices of the cup; a pair of gears carried by the sleeve; a counter-shaft; a pair of gears loosely mounted on said counter-shaft; clutch mechanisms for locking said looselymounted gears to the counter-shaft; a gear intermediate one of the looselymounted gears of the counter-shaft and one of the sleeve-gears a fixed gear carried by the counter-shaft; a gear in engagement With said fixed gear and loosely mounted on the driven shaft; clutch devices carried by said gear; a carrier secured to the driven shaft; clutch devices movable on said carrier and adapted to engage with the clutch devices of the gear; and means for actuating the clutch devices of the carrier.

23. The combination, with ashaft, ofa quill loosely mounted on said shaft; means for rotating the quill; a hub splined to the quill; a.

counter-shaft; clutch devices for locking another of said gears to said counter-shaft; a gear intermediate one of said loosely-mounted gears and one of the gears of the movable ITO sleeve and in engagement with each of said gears; a pinion fixed to the counter-shaft; a gear loosely mounted on the driven shaft; clutch devices carried by said gear; a carrier; clutch-devices mounted on the carrier; and means for actuating said clutch devices to cause them to engage with the clutch devices of the gear.

24. The combination, with a shaft, ofa quill loosely mounted on said shaft; means for rotating said quill; afrietion-cup having a hub splined to the quill; a carrier secured to the shaft; an expansion-ring secured to said carrier; means for expanding said expansionring to lock the friction-cup to the carrier; a

sleeve movable on the hub of the frictioncup; a gear carried by said sleeve; means for actuating the sleeve; clutch devices between the gear and friction-cup; a countershaft; a gear loosely mounted on said counter-shaft; means for connecting said gear to the counter-shaft; a pinion carried by the counter-shaft; a gear loose on the driven shaft and in engagement with said pinion; clutch devices carried by the gear; clutch devices mounted on the carrier; and means for actuating said clutch devices to cause them to engage with the clutch devices of the gear.

25. Thecombinatiomwithadriven shaft, of a quill loose on said shaft; a hub splined to said quill; a sleeve movable on said hub; means for clutching the sleeve to the hub; a gear carried by the hub; a counter-shaft; a gear carried by the counter-shaft; means for clutching said gear to the counter-shaft; a

gear intermediate the gear on the countershaft and the gear of the hub and in engagement with both of said gears; a pinion carried by the counter-shaft; a gear in engagement With said pinion; and means for clutching said gear to the driven shaft.

26. The combination,with a shaft, of a quill loose on said shaft; a hub splined to the quill; a sleeve movable on the hub; means for connecting the'hub-to the driven shaft; clutch devices intermediate the sleeve and hub; a

-- counter-shaft; a gear loosely mounted on the counter-shaft and in engagement with the gear of the hub; means for reciprocating the sleeve on the hub to cause the clutch devices to engage; means for locking the gear on the counter-shaft to said counter-shaft after said shaft; means for connecting said gear to the counter-shaft;-a gear fixed to the countershaft; a gear loose on the driven shaft; clutchpins carried by said gear; a carrier secured to the driven shaft; clutch-pins movable on the carrier; and means for actuating said clutch pins to cause them to engage the clutch-pins of the gear and rotate the driven shaft at a slow forward speed.

28. The combination,with adriven shaft, of a quill loose on said shaft; means for rotating the quill; a hub splined to the quill; means for conecting said hub to the driven shaft to rotate the same in one direction; a sleeve movable on the hub; clutch devices between the hub and sleeve; and means for rotating the driven shaft in a reverse direction, said sleeve constituting a part of the reversing means.

29. The combination, withashaft, of mechanisms for rotating said shaft; means for connecting said mechanisms to the shaft; a camshaft; a cam; means for actuating the cam; lever-and-link mechanisms actuated by the cam and controlling the shaft-rotating mechanisms; a device carried by each of the link parts of said lever-and-link mechanisms; and means for keeping said device in fixed relation to the cam.

30. The combination,with a shaft, of means for rotating said shaft at a sloW forward speed; means for rotating said shaft at a fast forward speed; means for reversing the rotation of the shaft; a movable sleeve constitutinga part of the slow forward and reversing mechanisms; means for connecting said sleeve to the shaft; and a cam having active and nonactive portions for actuating said sleeve and said mechanisms.

31. The combination, with a driven shaft, of a quill loose on said shaft; means for rotating the quill; a hub splined to the quill; a' friction-cup carried by the hub; means for connecting said friction-cup to the driven shaft; clutch-pins carried by the friction-cup; a sleeve movable on the hub of the friction- .cup; gears carried by the sleeve; clutch-pins mounted on one of the gears; means for reciprocating the sleeve; a countershaft; a pair of gears loosely mounted on said countershaft; clutch devices for locking said gears to the counter-shaft; means for actuating each of said clutch devices; a gear in engagement with one of the gears of the sleeve and with one of the loosely-mounted gears of the counter-shaft; a fixed gear on the counter; shaft; a loose gear on the driven shaft and in engagement with said fixed gear; clutchpins carried by said loose gear; a carrier splined to the driven shaft; clutch-pins movable in Ways of the carrier; means for actuating said clutch-pins to cause them to engage the clutch-pins of said loose gear; a cam; and means intermediate said cam for shifting the clutch-pin-actuating mechanism.

32. The combination, with ashaft, of aquill sleeved on said shaft; a hub rotating with the quill; a clutch element carried by the hub; a clutch element carried by the shaft; means for actuating one of said clutch elements to connect the shaft and hub; a counter-shaft; and gearing controlled by the hub for changing the speed of the shaft on which the quill is sleeved.

33. The combination, with a shaft, of a quill sleeved on said shaft; a hub carried by and rotating with the quill; a clutch element carried by the hub; a clutch element carried by the shaft; means for actuating the clutch element carried by the shaft to connect the shaft and hub; means for applying power to the quill; a counter-shaft; reversing mechanism of which the hub carried by the quill constitutes a part; and means for connecting said reversing mechanism with the shaft.

. 34.. The combination, with a shaft, of a hub or carrier secured to said shaft; a gear loose on the shaft; clutch devices carried by the gear; clutch devices movable on the hub or carrier; means for actuating said clutch devices of the carrier; and means for rotating the gear and, through the hub or carrier to which it is clutched, the shaft.

35. The combination, with a shaft, of a hub or carrier splined to the shaft; a power-transmitting element loose on the shaft; clutchpins mounted in guides of the hub or carrier; means for reciprocating said clutch pins; clutch-pins carried by the power-transmitting element; and means for actuating said element and, through the hub or carrier, the shaft.

36. The combination, with a shaft, of a hub or carrier splined to said shaft, said hub or carrier having open slots; means for rotating the hub or carrier and thereby the shaft at full speed in a forward direction; a gear loosely mounted on the shaft adjacent to said hub or carrier; clutch-pins carried by the gear; means for reciprocating the clutch-pins of the hub or carrier to cause them to engage the clutch-pins of the gear; and means for rotating said gear when such engagement is made, and thereby the hub or carrier, at a slow, forward speed.

37. The combination, with a shaft, of a hub or carrier having longitudinal guideways splined to said shaft; means for rotating the hub or carrier, and thereby the shaft, at a fast speed forward; clutch-pins; means for reciprocating the clutch-pins in the guideways of said hub or carrier; a gear loosely mounted on the shaft adjacent to said hub or carrier; clutch-pins carried by the gear; a countershaft; a loose gear carried by said countershaft and in mesh with the gear carrying the clutch-pins; means forlocking said loose gear to the counter-shaft; and means for rotating the counter-shaft and thereby causing the shaft to which the hub or carrier is splined to rotate at a slow speed in a forward direction. 38. The combination, with a shaft, of a hub or carrier splined to said shaft; a quill loose on the shaft; means for rotating the quill; a hub splined to the quill; means for clutching said hub to the hub or carrier; a gear loose on the shaft and located adjacent to one end of said hub or carrier; means for clutching the hub or carrier to said gear; means for releasing the clutch devices connecting the hub or carrier and the hub splined to the quill; and means for rotating the gear adjacent to one end of said hub or carrier.

. 39. The combination, with a driven shaft, of a hub or carrier splined to said shaft; a gear loosely mounted on the shaft adjacent to one end of said hub or carrier; means for clutching the hub or carrier to said gear; a counter-shaft; a gearloosely mounted on said counter-shaft means for clutching said gear to the counter-shaft; means for rotating said gear when thus locked to the counter-shaft; and a gear carried by the counter-shaft and in mesh with the gear loosely mounted on the driven shaft.

40. The combination, with a driven shaft, of a hub or carrier splined to said shaft and having guideways; clutch-pins mounted in the guideways; a shifting ring mounted upon the hub or carrier and connected with said clutch-pins; means for actuating said shifting ring; a gear loose on the driven shaft and located adjacent to one end of said hub or carrier; clutchpins carried by said gear and adapted to engage with the complemental pins of the hub or carrier; a counter-shaft; a gear carried by said counter-shaft and in mesh with the gear loose on the driven shaft; and means for rotating said counter-shaft.

41. The combination, with a driven shaft, of a hub or carrier splined to said shaft and having longitudinal guideways; clutch-pins mounted in said guideways; a shifting ring; studs projecting from the shifting ring and in engagement with the clutch-pins; a cam; means controlled by said cam for actuating the shifting ring; a gear loosely mounted on the driven shaft adjacent to one end of the hub or carrier; clutch-pins carried by the gear; a counter-shaft; a gear carried by said counter-shaft and in mesh with the gear loose on the driven shaft; and means for actuating the counter-shaft.

42. The combination, with a driven shaft, of ahub or carrier splined to said shaft and having open slots; clutch-pins mounted in said slots; a shifting ring; studs projecting from said shifting ring passing through the slots of the hub or carrier and engaging said clutch-pins; a revoluble cam; means controlled by said cam for actuating the shifting ring; a gear loose on the driven shaft; clutch-pins carried by the gear and adapted to engage the complemental pins of the hub or carrier; a counter-shaft; a gear carried by said counter-shaft, and in engagement with the gear loose on the driven shaft; and means for rotating the counter-shaft.

43. The combination, with a driven shaft, of a hub or carrier splined to said shaft and having longitudinal guideways; a shifting ring mounted on the hub or carrier; clutchpins mounted in the guidcways of said hub or carrier; studs projecting from the shifting ring and in engagement with said clutchpins; a revoluble cam; lever-and-link mechanism controlled by said cam for actuating the shifting ring; a power-transmitting element loose on the driven shaft adjacent to one end of the hub or carrier; clutch-pins carried by said power-transmitting element; and means for rotating said power-transmitting element.

44. The combination, with a driven shaft, of ahub or carrier secured to said shaft; an expansion-ring attached to the hub or carrier; a frictioncup; means for actuating said expansion-ring and thereby locking the cup and hub or carrier together; means for rotating the friction-cup; a power-transmitting element located adjacent to said hub or carrier; means for clutchingsaid power-transmitting element to the hub or carrier; and means for rotating the power-transmitting element.

'45. The combination, with a driven shaft, of a hub or carrier secured to said shaft; means for driving said hub or carrier and thereby the driven shaft at a fast speed in a forward direction; a power-transmitting element loosely mounted on the driven shaft adjacent to said hub or carrier; means for clutching said power-transmitting element to the hub or carrier; means for rotating said power-transmitting element at a slow speed in a forward direction; and means for reversing the rotation of said power-transmitting element, and, through the hub or carrier clutched thereto, the driven shaft.

46. The combination, with a driven shaft, of ahub or carrier splined to said shaft; an expansion-ring secured to said hub or carrier; a shifting ring mounted on the hub or carrier; means controlled by the shifting ring for actuating said expansion-ring; a frictioncup surrounding said expansion-ring and having a hub; a quill to which the hub of the friction-cup is splined; means for rotating the quill; clutch devices movable on the hub or carrier; means connecting the shifting ring with said clutch devices; a power-transmitting element loose on the driven shaft adjacent to the hub or carrier; clutch devices carried by said power-transmitting element and-adapted to engage the clutch devices of the hub or carrier; a counter-shaft; means for rotating said counter-shaft in different directions; and means carried by the countor-shaft for actuatingthe power-transmitting element loose on the driven shaft.

47. The combination, with a driven shaft, of ahub or carrier secured to said shaft; a friction-cup; means for clutching said friction-cup to the hub or carrier; means for rotating the friction-cup, and thereby the hub or carrier and driven shaft, at full speed in a forward direction devices for actuating said means; a power-transmitting element loose on the driven shaft adjacent to the hub or carrier; means for clutching said power-transmitting element to the hub or carrier; and means for rotating said power-transmitting element in different directions.

48. The combination, with a shaft, of a hub or carrier secured to said shaft; means for rotating the hub or carrier and thereby the shaft; a cam; means for actuating said cam; a link carrying a pin in engagement with the cam; a rocker movably connected to the link; and devices controlled by the link and connecting the means for rotating the hub or carrier to said hub or carrier.

49. The combination, with a shaft, ofa hub or carrier secured to said shaft; means for rotating the hub or carrier; a grooved cam; a link having a pin fitted in the groove of said cam; a rocker to which the link is pivoted; and devices controlled by said link for clutching the means for rotating the hub or carrier to said hub or carrier.

50. The combination, with ashaft, of means for rotating said shaft; a grooved cam; means for actuating the cam; a link having a pin located in the groove of said cam; a rocker connected to said link; and means controlled by the link for actuating the shaft rotating means.

51. The combination, with a shaft, of means for rotating said shaft; a grooved cam; means for actuating the cam; a link having a pin; a rocker to which one end of the link is pivoted; a yoke having an arm to which the other end of the link is connected; and devices controlled by the yoke for connecting the shaftrotating means to said shaft.

52. The combination, withashaft, ofmechanisms for rotating said shaft in forward and reverse directions; a cam; means for actuating the cam; links having devices in engagement with the cam; rockers movably connected to the links; and means controlled by said links for connecting the mechanismsfor rotating the shaft to said shaft.

53. The combination, with a shaft, and with means for rotating said shaft, of a grooved cam having active and non-active portions secured to the shaft; a link having a pin fitted in the groove of said cam; a rocker to which one end of said link is articulated;a movably-mounted yoke having an arm-to which the opposite end of said link is pivoted; a driven shaft; a hub or carrier secured to said driven shaft; shaft-rotating mechanism; and means controlled by the yoke for clutching said shaft-rotating mechanism to the hub or carrier.

54. The combination, with a driven shaft, of mechanisms for rotating said shaft; a hub or carrier secured to said shaft; a shifting ring mounted on said hub or carrier; means controlled by the shifting ring for clutching one of the shaft-rotating mechanisms to said hub or carrier; means for actuating the shifting ring; a grooved cam; a link pivoted to said shifting ring, and having a pin fitted in the groove of the cam; a rocker to which said link is articulated; and means controlled by the link for throwing another of the shaft-rotating mechanisms into action.

55. The combination, with a driven shaft, of a hub or carrier splined to said shaft; a quill loosely mounted on the shaft; a frictioncup having a hub splined to said quill; means for rotating the quill; means for coupling the friction-cup to the hub or carrier; a sleeve movably mounted on the hub of the friction cup; means for actuating the sleeve; gears carried by the sleeve; clutch devices between one of the gears and the friction-cup a counter-shaft and means controlled by said counter-shaft for actuating the driven shaft in different directions.

56. The combination, with a driven shaft, of a hub or carrier splined to said shaft; a quill loose on the shaft; means for rotating the quill; a device having a hub splined to said quill; means for clutching said device to the hub or carrier; a sleeve mounted on the hub; clutch mechanism carried by the sleeve; complemental clutch mechanism carried by the friction-cup means for reciprocating the sleeve; a counter-shaft; and gearing connecting the counter-shaft with the hub or carrier splined to the driven shaft.

57. The combination with a driven shaft, of a hub or carrier splined to said shaft; a friction-cup; clutch-pins carried by said frictioncup; means for coupling said cup to the hub or carrier; means for rotating the frictioncup; a gear having clutch-pins adapted to engage with the clutch-pins of said friction-cup; means for throwing said clutch-pins into engagement with the complemental clutch-pins; a counter-shaft; gearing carried by the connter-shaft; means for clutching said gearing to the counter-shaft; a gear loose on the driven shaft; a gear carried by the counter-shaft and in engagement with said loose gear; and means for clntchin g said loose gear to the hub or carrier.

58. The combination,with a shaft, of means for rotating said shaft; mechanism for reversing the rotation of said shaft; a cam; means for actuating said cam; a link; a device carried by the link and in engagement with the cam; a rocker to which the link is pivoted; and means connecting said link with a part of the shaft-reversing mechanism.

59. The combinatiomwith a shaft,of means for rotating said shaft; mechanism for reversing the rotation of the shaft; a clutch constituting a part of the shaft-reversing mechanism; clutch-actuating mechanism; a grooved cam; means for actuating said cam; a link having a pin; devices connecting the link with the clutch-actuating mechanism; and a rocker for controlling the movement of the link upon its pin.

60. The combination,with a shaft,and with means for actuating the same, of a grooved cam having active and non-active portions secured to said shaft; a link; a pin carried by the link, said pin entering the cam-groove; a rocker to which the link is pivoted; and a shiftable element to which said link is connected.

61. The combination,withagrooved cam,of means for actuating said cam; a link; a pin carried by the link and entering the groove of the cam; a rocker connected to the link; and a shiftable element also connected to the link.

62. Speed controlling and reversing mechanism comprising the following instrumentalities in combination: a shaft; means for rotating the shaft at full speed forward; means for rotating said shaft at slow speed forward; means for reversing the rotation of said shaft; a cam having a series of active and passive portions; a link and connections operated by the cam for throwing the fullspeed shaft-actuating mechanism into and out of action; devices actuated by said link for throwing the slow-speed, shaft-actuating mechanism into and out of action; a second link; and devices operated by said second link for throwing the shaft=reversing mechanism into and out of action. I

63. Speed controlling and reversing mech anism comprising the following instrumentalities in combination: a shaft; means for rotating said shaft at slow speed in a forward direction: means for rotating said shaft at fast speed in a forward direction; means for reversing the rotation of said shaft; a grooved cam having a series of active and passive portions; a link carrying a pin entering the cam-groove; connections from the link for throwing the mechanism for actuating the shaft at a slow speed forward into and out of action; connections from the link for throwing the mechanism for actuating the shaft at fast speed in a forward direction into and out of action; a rocker pivotedto the link; a second link having a pin entering the camgroove; a rocker articulated to said second link; and means actuated by the secondlink for throwing the shaft-reversing mechanism intoand out of action.

, In testimony whereof I atlix. my signature in presence of two witnesses.

MOSES C. JOHNSON.

lVitnesses:

WM. P. LARAWAY, F. G. CAMPBELL.

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