US1064191A

US1064191A - Jack.

Info

Publication number: US1064191A
Application number: US70569412A
Authority: US
Inventors: Joseph De Haven Bunn
Original assignee: HENRY S WIKEL
Current assignee: HENRY S WIKEL
Priority date: 1912-06-25
Filing date: 1912-06-25
Publication date: 1913-06-10
Anticipated expiration: 1930-06-10

Description

J. DE H. BUNN. JACK.

APPLIO ATION FILED JUNE 25, 1912. 1,064, 1 9 1 Patented June 10,1913.

3 SHEETSSHEET 1.

- Emma/tow /Ese @Z Jeflarenflann J. DE H. BUNN. JACK.

APPLICATION FILED JUNE 26,1912. 1,064,191

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J. DE-H. BDNN.

Patented June 10, 1913.

n r M Wu H n w e L r m a n M n a S J M *nnrrnn s'rarns TENT JOSEPH DE HAVEN BUNN, OF YORK, PENNSYLVANIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO HENRY S WIKEL, OF YORK, PENNSYLVANIA.

JACK.

Specification of Letters Patent.

Patented June 10, 1913.

To all whom it may concern:

Be it known that I, Josnrrr Dn HAVEN BUNK, a citizen of the United States, residing at York, in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in Jacks, of which the following is a specification.

My invention relates to improvements in.

jacks and more particularly to an improved construction which is d signed for elevating automobiles, and other Vehicles and which is capable of quick operation by one person to lift the vehicle entirely off the ground.

A further object is to provide an improved jack which is capable of adjustment to receive the front and rear axles of any size of vehicle, and which may be packed in a relatively small space when not in use.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangen'lents of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1, is a view in elevation illustrating my improvements spread out upon the ground in position to receive a vehicle positioned over the same. Fig. 2, is a view in side elevation showing the Vehicle in dotted lines and illustrating the next step in the operation of jacking the machine. Fig. 3, is a broken view in elevation on an enlarged scale showing (he jack in its upright position. Fig. 4:, is a plan view of Fig. 3. Fig. 5, is a view in elevation of the rear member partly broken away to illustrate the manner of ad justing the uprights. Fig. (3, is a View in longitudinal section through the center of the front member illustrating the manner of adjusting the same. Fig. 7, is a view in section on the line 77 of Fig. (3, and Fig. 8, is a perspective view of one of the axle engaging brackets 19.

My improved jack comprises a front membenl, and a rear member 2. These members are of general U-shapc preferably composed of horizontal and vertical pipe sections 3 and t connected by pipe angles 5. The vertical pipe sections 4 constitute the lower members of uprights, the upper members (3 telescoping in the lower members and secpred at various adjustments by pins 7 which are projected through openings 8 in lower members 4, and in any of a series of openings 9 in upper members 6.

The pins 7 are connected to the uprights by flexible devices 10 to prevent their loss when the parts are separated. A collar 11 is clamped to the intermediate portion of pipes 8 on front member 1, and a chain 12 is secured to this collar and is adaptedto engage a hook 13 on a collar 14 on rear member 2. This chain is of sufiicient length to allow of a wide range of adjustment, so that the members maybe positioned any desired distance apart by connecting the desired link of the chain with hook 1.3.

Collars 15 are screwed onto the upper members of the rear uprights, and T-couplings 16 are screwed onto the upper ends of the front uprights. These collars 15 and T-couplings 16 are provided with set screws 17 to clamp the vertical shank portions 18 of

angle brackets

19 and 20 respectively. These brackets are constructed to engage the front and rear axles and they project toward each other as seen most cl arly in Fig. 3.

The T-couplings 16 on front member 1 are connected by pipe 21 which projects through the ends 'of an arched bar 22. Chains 23 connect the lower portion of the front member 1 with hooks 24: on a bearing bracket 25. This bearing bracket receives a T-coupling 26 into which a pipe 27 is screwed. This pipe 27, at its free end, is of reduced diameter as shown at 28, and internally screw-threaded to receive a tubular screw 29. This tubular screw 29 is'externally and internally screw-threaded. Its

external screw-threads engage the threads in the restricted end 28 or sleeve 27, while its internal threads which are opposite to the external threads, engage the threads of a screw-tlu'eaded rod 30 secured to bar 22.

A toothed wheel 31 is secured to the tubular screw 21) at its free end, and is engaged by a spring-pressed detent or dog 32 carried by a lever 33. The lever 33 has a heal:- ing 31 mounted to turn upon screw 29, and held against longitudinal movement on the screw by means of a collar 35, the latter held in place by a set screw 36. This position of the lever allows it an oscillating movement on the screw 29, and as the spripgbracket.

pressed detent has a beveled lower end, it is free to ride over the teeth of wheel. 31 when the lever is swung in one direction, and compel the wheel and screw to turn therewith when moved in the other direction. It will thus be noted that as the tubular screw 29 is turned in one direction, it will cause the screw-threaded rod. 30 to move out of the tubular screw 29-, and the latter to move out of the pipe 27 to lengthen the prop which consists of ha r 22-,screw 50, tubular screw 2!), sleeve 27 and T-coupling 26.

The spring-pressed detent 32 has rotary mounting in the lever, and is provided with a pin 37 which is adapted to be swung around from side to side and positioned in recessed lugs 88. This moven'ient of the detent allows it to engage the teeth in one direction, and ride over them in the other, and permits the lever to be operated to lengthen and shorten the prop as will be understood.

In operation, the parts are placed in the osition shown in Fig. 1. That is, the prop is reduced in length and its T-coupling 26 is outside of bearing bracket 25. The front and rear members 1 and 2 are lying flat upon the ground, and the vehicle 39 illustrated in dotted lines may then be run into position over the jack. The next step is to place the parts in the position shown in Fig. 2, namely, the front and rear members are positioned at an incline with their

brackets

19 and 20 engaging the axles of the vehicle and the prop is positioned with its T- coupling 26 in the bearing bracket 25. The chain 12-, is of course connected to the hook 13, and when in this position, the operator oscillates lever to lengthen the prop and force the front upright to a vertical position. This movement of the front upright causes the rear upright to assume the same angle, because of the vehicle which acts as a connecting medium between the members, and because the chain 13 prevents any movement of the lower portion of the rear In other words, the movement of the frontbracket imparts a like movement to the rear bracket, and both members may be raised to a vertical position as shown in Fig. 3 to support the vehicle off the ground. When it is desired to lower the vehicle, the detent 32 is reversed and the prop gradually shortened, so as to slowly lower the vehicle onto the ground.

When the device is not in use, the several parts may be disconnected and packed into small space and carried with the vehicle if desired.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

llaving thus described my invention, what I claim as new and desire to secure by Lettors Patent is:

l. A frame consistin of top, bottom and. end bars, the ends bars having axle supporting fingers and the bottom bar a hook in combination, and another frame consisting of top, bottom. and end bars, the end bars having axle supports and the bottom bar a pin in COlTllJlllhtlOIl with a chain fastened to the hook and pin.

2. The combination of two frames, each consisting of top, bottom and end bars, and having on the end bars clamps and axle supporting fingers held to the end bars by the clamps, and one frame having a hook and the other a pin, with a chain fastened to the hook and pin.

3. A frame consisting of top, bottom and end bars, the end bars having axle supporting fingers and the bottom bar a-hook in combination, and another frame consisting of top, bottom and end bars, the end bars having axle supports and the bottom bar a pin in combination with a chain fastened to the hook and pin, a jack support, a chain connecting the jack support with the bottom bar of one of said frames, nd a jack connected to said lastqnentiofied frame and adapted to be positioned in the support, substantially as described.

4. The combination of two frames, each consisting 'of top, bottom and end bars, and having on the end bars clamps and axle su porting lingers held to the end bars by t e clamps, and one frame having a hook and the other a pin, with a chain fastened to the hook and pin, a jack support, a chain connecting the jack support with the bottom bar of one of said frames, and a jack connected to said last-mentioned frame and adapted to be positioned in the support, substantially as described.

A frame consisting of top, bottom and end bars, the end bars having axle supporting fingers and the bottom bar a hook in combination, and another frame consisting of top, bottom and end bars, the end bars having axle supports and the bottom bar a pin in combination with a chain fastened to the hook and pin, a jack support, a chain connecting, the jack support with the bottom bar of. one of said frames, and a jack connected to said last-mentioned frame and adapted to be positioned in the support, said jack comprising, two threaded members movable lmigitudiually with relation to each other, a ratchet wheel connected to one me1nher, a lever constructed to oscillate on the other of said members, and a dog on the lever constructed to engage the toothed wheel, substantially as described.

Ltd

iao

6. The combination of two frames, each consisting of top, bottom and end bars, and having on the end bars clamps and axle supporting fingers held to the end bars by the clamps, and one frame having a hook and the other a pin, with a chain fastened to the hook and pin, a jack support, a chain connecting the jack support with the bottom bar of one of said frames, and a jack connected to said last-mentioned frame and adapted to be positioned in the support, said jack comprising two threaded members movable longitudinally with relation to each other, a ratchet wheel connected to one member, a lever constructed to oscillate on 5 the other of said members, and a dog on the lever constructed to engage the toothed wheel, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of n two subscribing Witnesses.

J OSEPH DE HAVEN BUNN.

\Vitnesses HENRY S. WIKEL, HARVEY C. HUMMEL.