US548167A - Mechanism - Google Patents

Description

(No Model.) I v 3 Sheets-v-Sheet l.

H. M. kI .LAND V8v' H. W. CHBNEY.

FEED DRIVING MBHANISIYl y V1\I0.548167.` Patented 0p'..15,18-95.

(No Model.) 3 sheets-sheen 2. H. M. LELAND 8v H. W. CHENEY. FHED'DRIVING MEGHANISM.

1\I0.548,'167. Patented ont. 15, 1895.

l T LTE- WQ'TNESSES l mVE/woae @@W f, By

v l 3 'Sheets--Shm-n; 3. H. M. LELND 81; H. W. CHENEY FEED DRIVING MEGHANISM (No Model.)

N0. 548,167.;v Patented ont. 15, 1,895.

WITWESSES 4L,

I B 'mamey- NTTED STATES PATENT OFFICE.

HENRY M. LELAND AND HERBERT CHENEY, OF DETROIT, MICHIGAN, ASSIGNORS T() THE LELAND, FAULCONER da NORTON COMPANY, OF

SAME PLACE.

FEED-DRIVING MEcHANlsM.

` sPEoIFIcATIoN forming part of Letters Patent No. 548,167, dated october 15,1895. Application led March 25, 1895 Serial No. 543,025 (N0 111011910 To @ZZ whom it may concern.-

Be it known that we, HENRY M. LELAND and HERBERT W. CHENEY, citizens of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Feed- Driving Mechanism; and we declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertain's to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Our invention has for its object novel mechanism for driving the feed or carriage of a milling-machine and for analogous uses, our purpose being to provide a great variety of speeds, together with a great variety of powers, by which the feed mechanism ofl such a machine may be driven. Obviously it is of much importance in machines of this class to provide devices whereby the feed mechanism may be given considerable varieties of speed to suit different kinds of work and whereby a large variety of powers ma-y be readily applied to drive the feed mechanism. A milling-machine provided with such devices is adapted to a wide variety of work, whereas a machine without such provisions would be necessarily limited in the scope of the work which could be done thereby. Heretofore cone or speed pulleys have been employed to accomplish these results in a measure. These, however, have been found deficient and unsatisfactory for this purpose, inasmuch as the belt is liable to slip, and of necessity the face of each pulley of different diameter has necessarily been so limited as not to provide for a belt of sufficient width to give the requisite power desired.

Our invention therefore proposes a novel construction, combination, and arrangement of gears and other devices to accomplish the results above mentioned in a superior and more el'ioient manner, as hereinafter described and claimed, and illustrated in the accompanying drawings, in which-- Figure l is an end elevation showing the case and certain other parts in section. Fig. 2 is a plan view with the case in section. Fig.

3 is a side elevation at right angles to Fig. l,

`the case being indicated in dotted lines and showing parts in section.

VWe carry out our invention as follows: A denotes the main driving-shaft, provided with a pulley A', belted to the line-shafting by a belt A2. The shaft A is journaled in an adj ustable bracket or bearing A3 and is also provided with a pinion A4. Upon the bracket A3 `is journaled a gear A5, meshing with the pinion A4. The bracket A3 is jointedly connected with the casing B, as indicated at B', in any suitable manner. As shown, this jointed engagement is accomplished by means of a bolt B2. It will be seen that the pinion A4 and gear `A5 are j ournaled upon said bracket to one side of the jointed connection of said bracket with the case B, the joint at B being eccentric to the shafts of the pinion A4 and gear A5. The bracket A5 is provided with an adjusting lever A6.

B3 is a perforated bar attached to the case B to hold the lever A6 in any desired position, said lever being provided with a pin, as at b, to engage anydesired perforation in bar B5.

C is a gear mounted upon a shaft C', journaled in a suitable framework C2, supporting certain parts of the gear mechanism.

As shown in Fig. 1, the pinion A4 is in direct mesh with the gear C, which would, of course, give a corresponding direction to the rotation of the gear C. It will be seen, however, that by means of the adjusting-lever A6 the bracket or bearing A3, carrying the pinion A4 and gear A5, may be so adjusted as to throw the pinion A4 out of mesh with' the `gear C and to throw the gear A5 into mesh with the gear C instead. To do this, it would simply be necessary to engage the lever A6 in the perforation b of the bar B3. This would lift the pinion A4 out of engagement with the gear C and carry the gear A5 into mesh therewith. The eifect would obviously be to reverse the direction of the gear C from that where the pinion A4 meshesdirectly therewith. Midway between the extremities of the arm B3 may be provided a perforation b2 to hold the lever'A6 in a position to prevent either the pinion A4 or the gear A5 being in mesh with the gear C.

Our invention contemplates anysuitable mechanism for driving the gear C direct or IOC indirect, soA as to reverse the motion of said gear.

The shaft C is provided with an elongated pinion C3, meshing with the gear D,having an adjustable or movable engagement upon a shaft D.

E E E2 E3 represent speed-gears forming a cone gear mounted upon a sha-ft E4, the drawings submitted herewith showing four speedgears of derent diameters upon the shaft E4; but We would have it understood that We do not limit ourselves to any particular number of speed-gears upon said shaft, simply, as any desired number may be employed within the scope of my invention.

The gear D is arranged, in a manner hereinafter described, to be brought into.` mesh with any one of said speedgearsE E E2 E3; as may be desired.

F represents another gear having an adj ustable or movable engagement upon a shaft, F and: arranged, as hereinafter set forth,` to

. be brought into mesh with anyV one of said speed-gears, whereby the motion imparted to the speed-gears by the gear D will be transmitted to the gear-F through any one of the speed-gears, as may be desired.

G is an elongated pinion mounted upon. a shaft G', meshing with the gear F. Thefshaft G drives the carri-age or feed mechanism of themachine. The feed mechanismi,.in itself constituting no` feature of our invention, is

not shownherewith, but will be readily under-V stood by any one skilled in the. artandmay be of any desired construction.

The gear D is moved or adjusted upon its shaft to mesh with any one of the speed-gears E E E2 E3 in the following manner: The gear D` is journaledupon a bracketH, sleeved on the shaft D and having a sliding engager ment thereupon. The opposite end of the bracket H is` rigidly engaged with a shifter J.

K K denote crankarms pivotally engaged at one extremity upon then shaftlC and fulcrumed upon the shaft D intermediate their extremities. Through their-opposite ends the shifter .I isA movably engaged, so that the shifter can be longitudinally reciprocated therethrough. Theshifter .I extends through a sector L upon the case, the case being con structed with a corresponding-arcfshaped slot. The'shifterJ-is shown constructed witha series of transverse slotsj to receive` thev corre,- sponding edge of the sector, as indicated in Fig. 3. The slot of thefsector is,however, enlarged at one extremity, as indicated at Z, Fig. 1, to permit the shifter J being longitudinally reciprocated therethrough.

Misa lever engaged with one of the crankarms K, said lever M being longitudinally reciprocatory, by which movement, it will be perceived, the gear D may be drawn out of mesh with any of the speed-gears, said: lever being provided with a series of notchesl fm, whereby the lever may beflocked in@ a given position.

Then it is desired to change the engage- 1 ment of the gear D with the speed-gears, the lever M is first pulled outward, thereby tilting in corresponding direction the crank-arms K K, whereby the gear D is lifted out of mesh with a corresponding speed-gear. Then by throwing the shifter J over into the enlarged 1 portion Z of the sector L, the` gear D may be i moved laterally upon the shaft D to bring it opposite any desired speed-gear of a given diameter. The lever M is then forced inward to bring the gear D into mesh with the'correspending speed-gear, and the shifter J is moved in a reverse direction tohold the gear T D from lateral'movement on the shaft D". In 1 this manner the gear D may be moved into mesh in a ready manner with any desired speed-gear of theseries. The gearF is adp justed in an analogous manner. N N denote crank-arms pilvotally engaged upon the shaft G",the arms N N being analol gous to thearms K P represents` a longitudi-nally-movable lever engaged with one of the arms'N, whereby on pulling out said lever the gear F will be y lifted outof mesh with any given speed-gear of the series intoposition where the gear F may be adjusted laterally into` positionopposite any giiven speedegear of the series, as may t be desired.

Q represents an additional shifter corre .l sponding to the shifter JT, engaged with a t sliding bracket F2- u-pon the shaft F and extended through a sector R, constructed in a 1 manner analogous to the sector L, whereby lwhen the lever l), analogous to the lever M, has been drawn. outward, thereby moving the gear F out of mesh with a corresponding gspeed-gear, a longitudinal movement of the sh-ifter Q may move the gear F' laterally to @correspond in: position to that of any given speed-gear of the series.

The operation of the device will now'beun `fderstood. The rotation of the driving-shaft l A transmitsA its motion through: the pinionA :'eit'her directlyv toY thegear. C or indirectly thereto1 through the gear A, as may bede- 'sired, the motion of the gear C being trans mitted through the elongated pinion C3 to the gea-r Dwhieh may be. adjusted into mesh `with any given speed-gear of the series, in thei manner described, the corresponding speed-gear transmitting motion tothe gear F, which may be adjusted to mesh with any speed-gear ofthe series, the gear Ftransmitting its motion to the pinion G upon the feeddriving shaft G By means of the pinion A4 and the gear Aarranged as above described, motionmay be given to the gear C in either direction, as may be required. Where a set of four speed-gears of different` diameters is employed, asillustrated in theaccom-panying i drawings, it will obviously be possible, by the adjustment of the gear D and of the gear F,provided for as hereinbefore described, to obtain corresponding changes of speed with case. In consequenceof the different ratios IOD IIO

a corresponding change of power in every of the gears in this manner we provide, as hereinbefore set forth, for a great variety of speed and powers in a machine of this class. By adding more speed-gears to the series obviously the range of varieties of speed and power might be proportionately increased.

The improved devices and methods for handling the shifting gears hereinbefore mentioned are important features, inasmuch as we are enabled thus to handle the shiftinggears directly by two levers projecting through the casing. In this manner we are enabled to place the gears inside the base of the machine and handle the shifting-gears with as much ease and rapidity as could be done if there were no casing.

Although we have shown and described the mechanism embodied herein especially with reference to driving-feed mechanism .of a milling-machine, we Would also have it understood that our invention contemplates its use for any purpose to which it may be found adapted.

What we claim as our invention isf- 1. In a driving mechanism, the combination of a casing, a cone gear provided with a series of speed gears of varying diameters, a shaft D', a bracket H sleeved upon said shaft and having a sliding movement thereupon, a gearD j ournaled upon one end of said bracket, a shifter rigidly engaging the opposite end of said bracket, a rotatableshaft C provided with an elongated pinion C3 meshing with the gear D, crank arms K K pivotally engaged at one .end upon a shaft C and carrying intermediate their extremities the shaft D', one end of said shifter having a reciprocatory engagement with the opposite ends of said crank arms and having its opposite end projecting through said casing, and a lever M projecting through the casing to operate said crank arms, substantially as set forth.

2. In combination, a casing provided with an arc shaped slot enlarged at one extremity thereof, a series of speed gears of varying diameters, a shaft, a bracket having a sliding engagement upon said shaft, a gear journaled upon one end of said bracket, and an oscillatory crank arm, and a shifter constructed with a series of transverse slots upon one edge thereof, said shifter rigidly engaged with the opposite end of said bracket and having a reciprocatory engagement with said crank arm, and a lever to actuate said crank arm having a reciprocatory movement through said casing, the shifter connected with said bracket having a reciprocatory and oscillatory movement in said arc-shaped slot ofthe casing, substantially as set forth.

In testimony whereof we sign this specification in the presence of two witnesses.

HENRY M. LELAND. HERBERT W. CHENEY. Witnesses:

N. S. WRIGHT, O. B. BAENZIGER.

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