US1271683A - Power-transmission attachment. - Google Patents

Description

E. F. ELMBERG.

POWER TRANSMISSION ATTACHMENT.

APPLICATION FILED 050.15. 1911.

1,271,683., Patented July 9,1918,

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E. F. ELMBERG.

POWER TRANSMISSION ATTACHMENT.

APPLICATION FILED DEC. 15. 1917.

Patented July 9, 1918.

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- of said device, and Fig. 5 is a detail view,.

ERNEST F. ELMBERG, 0E PARKERSIBURG, IOWA.

POWER-TRANSMISSION ATTACHMENT.

Specification of Letters Patent.

Patented July 9, 1918.

Application filed December 15, 1917. Serial No. 207,225.

To all whom it may concern:

Be it known that I, ERNEST F. ELMBERG, a citizen of the United States of America, and a resident of Parkersburg, Butler county, Iowa, have invented certain new and useful Improvements in Power-Transmission Attachments, ofwhich the following is a specification.

My invention relates to improvements in power transmission attachments, and the object of my improvement is to supply mechanism of this type of a simple and convenient construction adapted for detachable attachment to the crankshaft of the motor of a motor-vehicle or other prime-mover, and which shall be capable of transmitting power to driven mechanism with a minimum loss of power. Other objects of my improvements will be more specifically hereinafter described, pointed out in the claims, and illustrated in the accompanying drawings, in which, where similar numerals of reference denote corresponding parts,'Figure 1 is a plan view of my improved power transmission attachment as connected to a driving-shaft; Fig. 2 is a side elevation of the same, more specifically showing the means for adjustably mounting the device on the frame of the prime-mover; Fig. 3 is a fragmental under plan view of the'forward end of the device, showing the cam-controlled adjustable clip thereon; Fig. 4 is an end elevation of the releasable ratchet-crank on a magnified scale, of said ratchet-crank, as separated from the driven parts of the device, with parts sectioned or broken away.

Referring to the drawings, in which the numeral 56 denotes the fixed part of the front axle of a motor vehicle, 57 the front cross-connecting bar of the frame thereof, and 1 the forward end of the crank-shaft of the motor thereof, the numerals 30, 31 and 35 denote the rearwardly diverging horizontal frame bars of my device and the s aced cross-plates fastened thereto by bolts 3 and 36 respectively. Bars 49 are fastened by bolts 50 to the tops .of the frame-bars 30 to extend rearwardly therefrom and rest upon the top of the cross-connection 57 to support the rear end of the device. Upon the for ward cross-plate 35 a pair of bars 44 are secured by means of bolts 43 and may be rocked horizontally. for adjusting purposes. On each bar 44 at its rear end isan upright integral lug 45 orificed to receive the forward threaded end of a rod 47 and secured by a nut 46.

The rear end of each rod 47 is downwardly hooked at 48 to hook-over the top of sald Gross-connection 57.

Referring now to said Fig. 2, as also to Fig. 3, the numeral 59 denotes a cross-bar secured on the under. face of the forward part of each frame-bar 30 by means of bolts 36. Secured medially on said bar 59 by a bolt 61 is a rearwardly extending bar 60,

medially twisted to present itselfvertically' edgewise and sloping downwardly and rearwardly and having a medial longitudinal groove and slot 62' on one side. The numeral 63 denotes a rod whose forward end is bent at a right angle at 64 topass through the forward part of the slot 62 and secured by a nut to prevent separation from the bar 60 while permitting longitudinal movement of said end 64v in said slot. On said end 64 is pivotally mounted a cam 65, whose edge bears movably against the forward wall of an angular lug 70 on the end of the bar 60. Said cam has a handle 66. Another rodpart 68 is connected adjustably to the rodpart 63 in alinement b means of a tumbuckle 67, and has at Its rear end an upturned hook 69 adapted to be hooked under the axle-member 56. A channeled bracebar 52 is connected by means of bolts 53 and 36 at its rear and forward ends to the rear depending parts 51 of the frame-bars 30 and the forward parts of said frame-bars, re-

spectively. An adjustable spacing-bar 55 is secured to the rear face of each of thedepending parts 51 by means-of -a screw-bolt 54 to be interposed between the part 51 and the axle-member.

A socket 3, see Fig. 5, is secured detachably to the forward end of the driving-.

shaft 1 by means of a pin 2.. Said socket has a diminished hollow shank secured detachably to the'rear end of a-driven shaft-mom:

ber 5 by means of a pin 4.' On the forward.

fixed a crank 13 supplied with a handle 14,-

and is wide enough to also have secured on it's forward face a block 12. The block 12 has a longitudinal hollow 17 and side openopening on the front face of the block, and said hollow contains a' plunger-rod or ratchet-pawl 18, ashort coiled compressionspring 16 within said hollow bearing down upon said pawl. A lateral pin 19 on th'ef fasten the pawl in its upward position, or release it when the pinis rocked forwardly. The ratchet-crank 13 is intendedlto be permanently mounted with its carrying;- shaft 5 on jsaid'driving-shaft 1,' and when any of the usual mechanical equivalents,

the frame 30 is removed from the frame of the vehicle, the crank 13 remains, and can be .used as a safety crank to crank'up said driving-shaft. This is done by sliding the sleeve 6 forwardly on the shaft-member 5 to 1 seat the fixed sleeve 9 partially within the hollow 8 of the enlargement 7, so that the -rea'rmost detent 10 will be positioned to be engagedoby the lower end of the pawl 18, when the latter .is released and propelled downwardly by said spring 16. This engagement permits rotation of the shafts 5 and 1 by means of the crank 13, but in the event of the engine back-firing the sloping lower end of said pawlrides up over the detent 10, comp resslng said spring 16, and also pushes back the sleeve 6 to cause the detent to clear the pawl, due to the cylindrical form of the detent. When the frame is mounted on the vehicle tobe used as a power transmission attachment thereto, the

universaLcoupling composed of the usualparts 24 to 28 inclusive, the pair of detents is not essential to my invention.

10 passing into a key-slot 22. The coupling-member 28 is secured on the rear end vehicle, and that the universal coupling connection therein permits considerable play between the coupled. shaft parts as may be necessitated in the operation of adjusting the device in mounting it up or in locating the belt-wheel in a desired plane pawl can. rock therewith into or out of' the side opening 20 in said block, to thereby relative to the'machinery driven. The incorporation of the releasable crank 13 also renders the device more convenient, and is always adapted for use by the dismounting of the attachment frame only.

It is intended that this invention cover and that various minor changes may be made without departing from the principle of the invention.

Having described my invention, what .I claim as new, and desire to secure by Letters. Patent, isz" 1. In combination, a driving-shaft, a driven shaft element mounted on said driving-shaft, engaging-means on said driven shaft element, a crank mounted loosely and longitudinally slidablyon said driven shaft element, and a yieldable resiliently-controlled-pawl engaging said engaging-means detachably and mounted on said crank, to rotate the shafts when the crank is rotated in one direction only.

.then rotated in one direction, said. pawl of. a shaft-member 29 mounted in a pair of spaced bearing- boxes 32 and 41 fixed on said cross-plates .31 and 35 by means of bolts 37 and 36. The boxes have oil-cups '33 and 42 respectively, and may contain roller-bearings about said shaft, though this A stopcollar 34 is secured on the shaft 29 intermediate said boxes.

Anterior to the frame 30, a belt-wheel 38 is mounted on the shaft 29. The forward end of said shaft has a short longitudinal groove, .58 to detachably receive the hooked end of a removable crank 39 provided with a handle 40, for starting purposes when such power attachment is in use. A belt may be run from-the belt-wheel38 to drive any kind of machinery as desired.

It will be seen that this device may be quickly attachedto or dismounted from a riding back over said engaging-means when the connected shaft elements are rotated in a reverse direction and also yielding longitudinally reversely to revent rotation of the crank when the sha s are reversely rotated.

3. In combination, a driving-shaft, a driven shaft element mounted on said drivingshaft, engaging-means on said driven shaft element consisting of a cylindrical detent on said element, a crank mounted loosely and slidably on said driven shaft element, and a yieldable resiliently-con trolled pawl mounted on said crank and engaging said detent when the crank. is first moved longitudinally on its shaft-in one direction and secondly rotated in one direcanother driven shaft element, a universal in one direction, after the universal-con coupling detachably connected between said driven shaft elements, a frame on which said second-mentioned driven shaft element is rotatably mounted, a frame on which said drivingshaft is rotatably mounted, adjustable supporting connections between said frames, the first-mentioned driven shaft element having engaging-means adapted to detachably secure it to said universal-coupling,

a crank loosely slidably mounted on the first mentioned driven shaft element and having a yieldable resiliently-controlled pawl mounted thereon and adapted to engage the said engaging-means when the universalcoupling is removed, and the crank moved forward longitudinally on the shaft, to rotate the connected shaft elements in one direction.

5. In combination, a driving-shaft, a driven shaft element mounted thereon, another driven shaft element, a universal coupling detachably connected between said drivenshaft elements, a frame on which one of said driven shaft elements is rotatably mounted, a frame on which said drivingshaft is rotatably mounted,'adjustable supporting connections between said frames, the first-mentioned driven shaft element having a cylindrical detent thereon, a crank loosely slidably mounted on the first-mentioned driven shaft element, a resiliently-controlled pawl mounted movably on said crank to en gage said detent when the crank is rotated pling has been uncoupled from said element, to rotate said element in one direction, said pawl yieldably riding over said detent when the said shaft element is rotated in a reverse direction.

6. In combination, a driving shaft, a frame on which said driving-shaft is rotatably mounted, an axle supporting said frame, a driven. shaft element mounted on said driving-shaft, another driven shaft element, a universal-coupling detachably connecting said driven shaft elements, a frame on which said second-mentioned driven shaft element is rotatably mounted, adjustable clips mounted movably on the last-mentioned frame and having engaging-means adapted to releasably engage the first-mentioned frame, the rear end of the last-mentioned frame being supported on the firstmentioned frame, and an adjustable clip movably mounted on the last-mentioned frame and having engaging-means adapted to releasably engage said axle, the rear part of the last-mentioned frame being bent downwardly and engaging said axle.

7. In combination, a driving-shaft, a frame on which said driving-shaft is rotatably mounted, an axle supporting said frame, a driven shaft element mounted on said driving-shaft, another driven shaft element, a universal-coupling detachably connecting said driven shaft elements, a frame on which said second-mentioned driven shaft element is rotatably mounted, adjustable clips mounted movably on the last-men tioned frame and having engaging-means adapted to releasably engage the first-mentioned frame, the rear end of the last-mew tioned frame being supported on the firstmentioned frame, an adjustable clip movably mounted on the last-mentioned frame and having engaging-means adapted to releasably engage said axle, the said clip being formed of two parts, a turn-buckle adjustably connecting said parts, said last-mentioned frame having engaging-means, and a cam mounted on the last-mentioned frame to rock thereon in moving engagement w th said engaging-means, said camhaving a plvotal connection-to one of the parts of the last-mentioned clip. I V

Signed at Waterloo, Iowa, this 6th day of Dec. 1917,

ERNEST F. ELMBERG.

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