US702025A - Friction-driven truck. - Google Patents

Description

No. 702,025. Patented :une lo, |902.

J. F. mcELRnY.

FRICTIUN DRIVE TRUCK.

' (Application med Dec, 15, 14.898.)

2 Sheets-Sheet I.

(No Model.)

h/Zwsee was M No. 702,025. Patented lune l0, |002.

J. F. m-csLov.

f rmcnou nmvsnvrucx.

(Applicltion led Dec. 15, 1598.)

- 2 Sheets-#Sheet 2.

UNITED STATES PATENT (V)EEICE.v

JAMES E. MCELROY, OE ALBANY, NEW YORK, ASSIGNOR TO CONSOLIDATED OAR-HEATINGr COMPANY, OE ALBANY, NEW YORK, A CORPORATION OE WEST VIRGINIA. Y

FFilCTION-DRIVEN TRUCK.

SPECIFICATION forming part of Letters Patent No. 702,025, dated June 1Q, 1902. Application iiled December 15l 1898. Serial No. 699,363. (No model.)

To all whom it may concern: and provided with an interposing spring h Be it known that I, JAMES F. MCELROY, a within said projection H, the tendency of said citizen of the United States of America, and spring being to draw together the pedestals, v a resident of Albany, in the county of Albany and therefore the drive-wheels. The rod G 5 and State of NewYork, have invented certain and the spring connection form ameans of 5 5 new and useful Improvements in Frictiondrawing the drive-wheels in contact with the Driven Trucks, of which thegfollowing is a friction-rollersufficient toovercomethe tractspecification. Y ive eect of the drive-wheels on the track My invention relates to friction driven when there is no car-body or load placed on Io trucks; and the' object of my invention is to the truck. v `6ol provide a truck adapted for propulsion by an On each sideof the truck and to each of thel electric or other motor by means of a frictionparts A and B of the frame I secure plates J J, rollerin contact with the drive-wheels so con-- said plates'J J slightly separated from each structed that the weight of the carbody and other'and presenting two adjacent faces ilar- I5 load will exert a pressure upon the frictioning upward and outward from eachother. Fit- 65 roller of the drive-wheels in proportion to the ting between said adjacent faces of the plates weight of said car-body and load. I attain this J J on each side of the truck I arrange a Wedge- Object by means of the mechanism illustrated shaped block K, suitably mounted to the supin the accompanying drawings, in whichport L. The braces L are securedto the castzo Figure l is a plan, partly in section; and ing Land extend to the bottom of the car, to 7c Fig.2 is an elevation, partlyin section. Fig. which they are connected by means of the 3 is a cross-section with parts omitted, showking-bolt L2, thus carrying the ear-body. The ing in detail the support for the wedge-shaped support L is a casting to which on each side blOckKand the mannerof uniting thebraces is attached an arm 5 5, which is boltedior 2'5 M. Fig. 4 is a detail view showing the conotherwise secured to the braces M M, respec- 75 nection of the wedge K in reference to the tively. .The portion of the casting L com- Overlapping side pieces A B and itsY relation prised within the angle made bythe arms 5 5 is to the car-support. l adapted to contain a spring or series ofsprings Similar characters refer to similar `parts 6. Forming part of the support for the oar- 3o throughout the several views. body I arrange the braces M M, extending-8o I arrange a double interlockingf rame contoward the ends and center of the truck and sisting of two parts Aand B, to each of which capable'of movement upon the parts A and parts is mounted a pair of drive-wheels C D. B of thetruck-frame, said braces beingsuit- Thepedestals C D', in which said driveably secured together at the front and rear 3 5 wheels are mounted, are secured to their reof the truck by means of the locking-plates 85 spective frames by means of bolts, as shown m m or in any suitable-manner.` The fricin Fig. 2, o r in any suitable manner. Within tion-roller is mounted upon the shaft f and the pedestals CD, respectively, I preferably operated by a motor. (Not shown.) As thus arrange a springE E for the purpose of allowarranged it is apparent that the weight of the 4o ing a slight give between the drive-wheels car-body' and -load will tend to depress the 9o and the friction-roller F, placed between them, wedge-shaped-block K between the plates J J suficient to allow a slight horizontal play in on each side of the truck, and as on each side case dirtor gravel should be wedged between of the truck there isr a plate attachedto each the drive-Wheels and the friction-roller. of the two parts composing the frame of the 45 Attached to one of the pedestals D on each ltrucky and a pair of wheels secured to each of 9'5 side ofthe car I secure, by means of a nut'or said. portions of the frame the operation of in any other suitable manner, one end of the the wedge will be to cause .the two portions rod G,'the Opposite end of which is preferof the frame to interlock and the wheels to ably secured within a projection H, secured' be drawn in closer contact with the friction- 5o to the pedestal C on the same side of the car roller placed between them. v v roo The construction of truck described herein is very simple and the means for keeping the drive-wheels in contact with the friction-roller are positive, regardless of the amount of load that is carried thereon. The arrangement of the pedestals with the springs E E, allowing for a Very slight give between the drive-wheels and the roller, will allow for dirt getting between the drive-wheels and the rollenwithout making it necessary to raise the plate J and the wedge K for every slight obstruction.

What I claim as my invention, and desire to secure by Letters Patent of the United States, is-

1. In a car-truck, a truck-frame composed of two parts yieldingly connected arranged to overlap each other at the sides of the truck, with means for causing a slight horizontal movement of said parts in reference to each other, substantially as described.

2. In a car-truck, a truck-frame, composed of two parts yieldingly con nected,overlapping each other at the sides of the truck,and braces adapted to hold said parts in suitable relation to each other, with a pair of drive-wheels mounted in each of the parts of said frame, and means for causing the drive-wheels to revolve by the action of a motor, substantially as described.

3. In a car-truck, a truck-frame, consisting of two parts, arranged to overlap each other at the sides of the truck and yielding connections between the parts of said frame, with means, actuated by the weight ot the car-body and load, for causinga slight horizontal movement of the parts of said frame in reference to each other, substantially as described.

4. A car-truck, consisting of a frame composed of two parts arranged to overlap each other at the sides of the truck, apair of Wheels mounted in each part of said frame, a friction-roller mounted to engage with two of said wheels on one side ot' the truck, with a means for interlocking said frames, substantially as described. Y

5. In a car-truck, a frame, consisting of two parts, a pair of drive-wheels mounted in each part of said frame, a friction-roller mounted to rotate between and in contact with said wheels, and means for interlocking the parts of said frame in such a manner that the weight of the car-body and the load will tend to draw the wheels in contact with the frictionroller, substantially as described.

6. In a car-truck, two pairs of drive-wheels, pedestals in which said drive Wheels are mounted, the journal-boxes in said pedestals provided with a resilient cushion allowing for a certain horizontal give of the drive-wheels, the friction roller mounted between said drive-wheels, and a means for connecting the pedestals on the drive-wheels on one side of the carin such a manner that the drive-wheels will be drawn in contact with the frictionroller, substantially as described.

7. In a car-truck, a frame, consisting of two parts, a pair of drive-wheels mounted in each part, a friction-roller mounted to rotate between and in contact with said drive-wheels on one or both sides of said truck, a plate secured to each 'of said parts of said truckframe on each side of the truck, each plate so arranged and located in reference to the drive-wheels on the part of the frame carrying said plate that pressure brought to bear upon said plate will cause said dri ve-wheels to move toward the friction-roller, with a means, actuated by the weight of the car-body and load, for bringing pressure to bear upon said plates, substantially as described.

8. In a car-truck, a frame, consisting of two parts, a pair of drive-wheels mounted in each of said parts, a friction-roller mounted to rotate between and in contact with said drivewheels on one or both sides of said truck, a plate secured to each of said parts of the frame on each side of said truck, so arranged in reference to each other that a wedge-shaped block may be placed in contact with said plates on each side of the truck and that the weight placed on said blocks will tend to cause the parts of the frame to move upon each other, and means for mounting said wedgeshaped blocks in such a manner that the weight of the car-body and load will come upon them, substantially as described.

9. In a car-truck, a frame composed of two parts, a pair of drive-wheels mounted in each part of said frame, a friction-roller arranged to revolve in contact with two of said drivewheels on one or both sides of said truck, a plate attached to each part of said frame and on each side of said truck, said plates arranged in reference to each other in such a manner as to allow for the entrance of awedge-shaped block between adjacent faces of said plates on each side of the truck, wedge-shaped blocks mounted in connection with the body of said truck adapted to engage with said plates on each side thereof, all so arranged and connected up that the weight of the car-body and load on the car will tend to draw the parts of the frame horizontally toward each other,substantially as described.

Signed by me at Albany aforesaid this 13th day of December, 1898.

JAMES F. MOELROY. i/Vitnesses:

A. N. A. Mol-IMG, CHAs. B. MITCHELL.

IOO

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