US2205719A - Automobile wheel jack - Google Patents

Description

June D- "r. H. FOREHAND 2,205,719

AUTOMOBILE WHEEL JACK Filed Jan. 16, 1940 2 Sheets-Sheet l Inventor Afiorneys June 25, 1940. FQREHAND 2,205,719

AUTOMOBILE WHEEL JACK Filed Jan. 16, 1940 2 Sheets-Sheet 2 A iiomeys Patented June 25, 1940 UNITED sTA-rEs ares orrlcs Claims.

This invention relates to automobile wheel jacks and an object of the invention is to provide a jack of this character which will obviate the need of placing oneself in danger, as results in 5 positioning the body or a portion thereof under the automobile in order to properly fit the jack to the wheel or wheel axle, as is now generally required with jacks known or in use.

The invention, together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure 1 is a side elevational view illustrating the application of the jack.

Figure 2 is a top plan view further illustrating the invention.

Figure 3 is a plan view with the threaded jack standard removed.

Figure 4 is a detail sectional view taken substantially on the line 4-4 of Figure 3.

Figure 5 is a detail sectional elevational view taken at the base portion of the jack.

Figure 6 is a top plan view of the jack standard and associated parts.

Figure 7 is a fragmentary detail sectional view throughthe rim-engaging end of the lifting arm of the jack.

Figure 8 is a perspective View of an operating wrench.

Figure 9 is a indicator, and

Figure 10 is a sectional view through the shiftable sleeve forming part of the jack assembly.

Referring more in detail to the drawings it will be seen that in the preferred embodiment of the invention the jack comprises a base 5 from which rises a short inverted U-shaped frame in that is disposed diagonally of the base.

At the centerthereof the base 5 is provided 4 with a threaded socket l which receives a threaded stud 8 having an integral pin 9 adapted to be engaged in a selected one of a longitudinal series of sockets it provided in a tubular guide rod I! whereby said rod may be supported at perspective view of a position the desired longitudinal position of adjustment relative to the base 5 and in a manner to rotate in either of tWo directions in a horizontal. plane.

The purpose of the guide tube It will be pres. ently made more manifest.

Further in accordance with the present invention the jack embodies a threaded standard l2 having a tapered end It adapted to seat conformably in a socket It provided therefor in the top of the frame 6 as clearly shown in Figure 5. Threadedly engageable with the standard I2 is a sleeve i5 equipped with a laterally extending handle l6.

The sleeve it has secured longitudinally thereof one end of a lifting arm 5'! that curves upwardly and away from the sleeve E5 to terminate in a lateral extension 18 on which is seated a pad IQ of leather or other suitable material for engaging the rim 2i! ofa vehicle wheel 2i as suggested in Figure 1. 1

The cushion member i9 is removably secured to the end it of the lifting arm ll through the medium. of a bolt 22 as best shown in Figure 7.

The upper end of the jack standard it is squared as at 23 to accommodate an operating wrench 24 through the medium of which the standard 12 is rotated for causing the sleeve it to thread longitudinally of the standard, upwardly or downwardly as desired.

The aforementioned guide tube l i slidably and rotatably accommodates a rod 25 equipped at one end with a handle it and at a relatively opposite end with an integral wheel-supporting arm 2?. The arm 21 is equipped at the upper end thereof with a brake drum-engaging head 28.

As best shown in Figure 5, one end of the tube It fits within one end of a channel 29 in a base block 29, the supporting arm 2i being accommoe dated in the slot or open side of the channel 29 to be held, when desired, in a vertical position, block 29 thus serving as a position-retainer block for the wheel-supporting arm 27.

Also in accordance with the present invention, and for use in properly positioning the base 5 with respect to the vehicle wheel 2i, there is provided a position finder or indicator 38 that is loosely secured to the frame 6 laterally of the frame as indicated generally at 3!.

Also to enable one to readily determine the proper position of the arm El, rod 25 adjacent the handle-equipped end 26 thereof is provided with an index or other marker 32 which may be read against the end of the tube ll farthest remote from the head 29 for indicating that the arm 21 has been properly positioned in the slot 29 of the block 29 for use in supporting a ve hicle wheel as will also be best understood from the following description of operation of the jack.

The manner of using, and the operation of the jack may be briefly described as follows:

Normally the parts are in the position suggested by full lines in Figure 2, that is with the arm 21 out of engagement with the head 29 and in a horizontal position. With the parts positioned with respect to the wheel 2| as indicated brake drum Na of the wheel.

in full lines in Figure 2, the position-finder or indicator 30 is extended relative to the frame 6 to engage the outboard side of the wheel. When the point of the position-finder 30 so touches the wheel the user will know that the base member 5 is properly positioned with respect to the wheel.

After thus locating the relative position of the jack for best results, the end iii of the jack stand ard i2 is positioned in the seat id provided therefor on the frame 6 and the operator by proper manipulation of the wrench M then rotates the jack rod or standard l2 holding the sleeve l5 against rotation relative to the rod or standard l2 by gripping, with one hand, the handle 16 of the sleeve l5. In this manner the sleeve i5 is caused to move upwardly on the rod l2 and with the pad-equipped end it of the arm ['5 engaging under the rim 2b of the wheel H as shown in Figure 2 the vehicle wheel will be raised up out of contact with the ground.

After the wheel has been raised, for example, slightly higher than that suggested in Figure 2, the guide tube H and associated parts are then swung on the pivot 9 from the full line position shown in Figure 2 to the dotted line position shown in said figure. When this has been accomplished the operator, grasping the handle 2% pulls the rod 25 toward him, at the same time rotating the rod 25 to bring the arm 2'! into a vertical position and into the slot 29 of the head member 29. The purpose of this operation is to bring the head 23 of the rod 2? into substantially vertical alignment with the The operator, by reading the index 22 against the outer or near end of the tube H can readily see that the arm 21 has been properly positioned with respect to to the brake drum Ella. When this has been determined the operator then manipulates the wrench 24 in a manner to cause the sleeve id to move downwardly on the jack rod or standard 82 thus lowering the wheel until the brake drum Ella seats on the head 2% of the supporting arm 2'5. When this has been accomplished the standard or post l2 and associated parts may be removed and the operator is then free to remove the vehicle tire, or to perform any other needed or desired operation with respect to the wheel.

Obviously to lower the wheel the operation above described is substantially reversed; the jack standard 12, arm H, and associated parts being first used to raise the wheel so that the drum 28a thereof will clear the head 25, after which the operator pushes inwardly on the rod 25 and then rotates the rod to place the supporting standard or post 27 in the horizontal position shown in broken lines in Figure 2. When in this position the tube H and associated parts are swung from the dotted line position shown in Figure 2 to the full line position shown in said figure, and further lowering of the wheel into ground-engaging position completes the lowering of the wheel to'the just stated position.

It is thought that a clear understanding of the construction, operation, manner of use, the utility and advantages of a jack embodying the features of the present invention will be had without a more detailed description thereof.

Having thus described the invention what is claimed as new is:

1.In an automobile wheel jack of the character described, a base, a wheel-lifting jack supported by the base for raising and lowering the jack standard having an end engageable with said seat, a sleeve member threadedly engaged on said jack standard for longitudinal adjustment thereon, a wheel-engaging lifting arm carried by said sleeve, a horizontally disposed tubular member pivotally mounted on said base, a rod having a rotative and sliding fit in said tubular member and providing at one end with a wheel-supporting arm, said arm being adapted ,to engage the brake drum of a. raised vehicle Wheel for supporting the latter, and means at one end of said tube for engaging said rod and Wheel-supporting arm for releasably retaining the latter in a vertical wheel-supporting position.

3. In an automobile wheel jack of the character described, a base, a wheel-lifting jack supported by the base for raising and lowering the wheel, and a wheel-supporting device mounted on the base for horizontal swinging movement relative thereto into andout of engagement with the brake drum of the raised wheel for supporting the latter in a raised position independent of said wheel-lifting jack, and a position-finder connected with said base for use in'properly positioning the base with respect to a vehicle wheel or analogous work.

4. In a jack of the character described, a base having a raised seat thereon, a threaded jack post having an end engageable with said seat, a sleeve member threadedly engaged on said jack post for longitudinal adjustment thereon, a wheel-engaging lifting arm carried by said sleeve, a horizontally disposed tubular member pivotally mounted on said base, a rod having a rotative and sliding nt in said tubular member and provided at one endwith a wheel-supporting arm, said arm being adapted to engage the brake drum of a raised vehicle wheel for supporting the latter, and means at one end of said tube for engaging said rod and wheel-supporting arm for releasably retaining the latter in a vertical wheel-supporting position, and an index on said rod adapted to be read against one end of said r tubular member to facilitate proper positioning of said wheel-supporting arm.

5. In a jack of the character described, a base having a raised seat thereon, a threaded jack post having an end engageable with said seat,

.a sleeve member threadedly engaged on said jack post for longitudinal adjustment thereon, a worlnengaging lifting arm carried by said sleeve, a horizontally disposed tubular member pivotally mounted onsaid base, a rod having a rotative and sliding fit in said tubular member and provided at one end with a work-supporting arm, means at one end of said tube for engaging said rod and work-supporting arm for releasably retaining the latter in a vertical work-supporting position, an index on said rod adapted to be read against one end of said tubular member to facilitate proper positioning of said work-supporting arm, and means associated with said base to facilitate proper positioning thereof with respect to the work.

THOMAS HERBERT

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