US1295973A - Car-mover. - Google Patents

Description

w. A. DORSEY.

CAR MOVER.

APPLICATION FILED JULY 10. 1914.

1,295,973. Patented Mar. 4,1919.

- amvcwfo z q/qWWw-ooao A/QML To all whom it may concern WALTER A. DORSEY, or COLUMBUS, OHIO, ASSIGNOR 1 0 THE Bonner-morn comrnnr,

or COLUMBUS, 01110,.4 CORPORATION or OHIO.

one-Movies.

Application filed July 10, 1914. Serial No. 850,181.

Be it knownthat I, WALTER A. DoRsEY, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Gar-Movers, of which the following is a specification, reference being had therein to the accompany- This invention relates especially to car movers of the class in which each has two car wheel engaging elements. The principal object of the invention is to provide a wheel engaging element having an improved connection to and relationship with the hand lever .for actuating it. Other ob-- jects will be apparent from thefollowing specification and claims.

Of thedrawings, p j i i Figurel is aside viewpartly insection showing in usea car mover embodying my invention. I I I j Fig. 2 is a view similar to Fig. 1 showing the car mover in a different position.

Fig. 3 is a plan view.

Fig. 4 is a fragmentary sectional view taken along the line 4-4 of Fig. 1.

Fig. 5 is a fragmentary sectional View taken along the line 5-;5 of Fig. 2. y

Referring to the drawings, 1" represents a track rail and 2a wheel of a car to be moved along the track.

3 is a pinch bar having the head 4 which is provided with a face 5 adapted to engage the surface of the car wheel, Formed integrally with the head 4 are two parallel rearward extending arms, 6, The pinch baris I provided intermediate its ends with a trans; verse fulcrum piece 7 which is set into a suitably shaped transverse slot in-the rear part of the head. The fulcrum piece 7 is provided with a sharp corner which projects downward from the slot to engage the track rail, and preferably the fulcrum is square in cross section and fits into a square slot in the head. Near the center the fulcrum piece is turned to be circular in cross section, as clearly indicated at 8' in Fig. 4. This construction provides two rail engaging points near the edges of the rail, thus providing a firm grip on the rail which is frequently so worn as to have a rounded upper surface, as indicated in Fig. 4.

Pivotally connected between the rear ends of the arms 6, 6 by means of the pivot bolt Specification of Letters Patent.

the other direction.

Patented Mar. 4., 1919.

8 is an operating lever 9. This lever is formed of metal at its lower forward part but the rear upper part preferably, though not necessarily, is formed of wood. The forward lower end of the lever 9 is provided with the curved surface 10 adapted to engage the downward convexed surface 11 on the car wheel engaging element 12. This element 12 has a car wheel engaging surface 12 and is entirely without direct connection with the pinch bar, and it is loosely connected with the manually operable lever 9 so as to provide for a rolling contact between the surfaces 10 and 11. Preferably the con- .nection between the lever 9 andthe element '12 lsprovided by forming the lever with a central vertical web 13having a relatively large aperture 14. j The element-.12 has two ears 15 15,'which extend downward on oppositesides of the web 13. A pin16 extends between the ears 15and through the aperture 14. In this way the wheel engaging element is connected to the lever but is, at the same time, allowed freedom of movement. p

For limiting the movement of the lever with respect to the pinch bar, the arms 6 of the bar are provided with inward projectinglugs 17 which engage with outward projecting lugs 18 on the lever to limit movement inone direction and with the flanges 19, on the lever to limit movement in From the foregoing description the operation of my improved car mover will be readily understood. The operator first places the car mover in position, as indicated iirFig. '1, with the surfaces 5 and 12 engaging the car wheel, the lever 9 being in its uppermost position as shown. The sharp corners of the fulcrum piece 7 engage the track and prevent the device from moving therealong. The operator then pushes down at the rear outer end of the lever 9. The pressure on the operating lever is transmitted to the element 12 to push it upward and thus force the wheel forward. It will be noted that at starting the point of contact of the surfaces 10 and 11 is relatively near the axis at 8, thus giving the operator a relatively powerful leverage. After the wheel is started, and less force is required, the line of engagement between the surfaces 10 and 11 moves gradually forward because of the traveling of the rolling contact.

reason of this construction the amount of force which is applied is approximately proportioned to the amount of force required.

The downward movement of the lever necessarily causes a powerful down thrust on the pivot bolt 8. Use is made of this down thrust as it is transmitted to force the front end of the pinch bar upward against the wheel surface. In this way an extremely powerful compound action on the wheel is secured.

By reason of the engagement between the parts 18 and 19 it is possible to continue the movement of the lever even after it has reached its limit of movement relative to the pinch bar, the forward end of the head 4: being still available for moving the lwheel. It will be observed that the wheel contacting surface 5 is shaped so as to provide a substantial rolling contact with the wheel surface.

The wheel engaging element, which, as shown, is of the nature of a concavo-convex block, is so formed that it is approximately bi-sected by the axial plane of the car wheel passing through the center, longitudinally, of this element. Its points of contact wvith the wheel are substantially equally distributed on both sides of the line of this plane which intersects the circle of the periphery. The elongated convexed under surface of this element is free to roll over the correspondingly long portion of the upper surface at the end of the lever. The lever contacts with this long rolling surface of the block or wheel engaging element at successive points which are on successively differing radii of the car Wheel, as will be seen upon comparing the positions of the parts in Fig. 1 with those shown in Fig. 2.

The upper surface at 5 of the nose of the pinch bar or rail-engaging element is so shaped that there is no necessity at any time for slippage, there being here also .a rolling contact between the nose and the wheel. As

the nose of the rail engaging element rises, this rolling contact causes the pressure to the wheel to be applied at a series of points in succession corresponding to a succession of differing radii of the car wheel. This shifting of the contact-points for the application of the leverage corresponds with the shifting of theradial lines of leverage application from the hand lever through the block or wheel-engaging element.

What I claim is 1. In a car mover, the combination with the pinch bar and the operating lever pivoted to the pinch bar, of a wvheelpushing element resting and rolling bodily'upon the operating lever independently of the pinch bar. and 'a retaining device loosely connecting said element permanently to the operating lever independently of the pinch bar and at points below the line of rolling, said wheelipushing element being normally bodily movable vertically and, forward and backward independently of the lever and pinch bar. r t r r 2. In a car mover, the combination with the pinch bar having an elongated upper, wheel-engaging, s rfa e a ts fr n end along which the wheel rolls as the pinch bar rises, and the operating lever pivoted to the pinch of a wheel-pushing 'element resting entirely on the upper d fof the operating lever and permanently connected thereto loosely as set forth to permit it to bodily movevertically and forward and backward independently of the lever, and having an elongated cur ed bearing urface along which it rolls in a direction similar to that along which the wheel rolls on the top surface of the pinch bar. I

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

I WALTER A- noRsnY.

Witnesses: V

S Ransom, W. S. DAVIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of. Patents,

W hing n, .10.

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