US1657781A

US1657781A - Automobile jack

Info

Publication number: US1657781A
Application number: US479742A
Authority: US
Inventors: Harold H Brown
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-06-23
Filing date: 1921-06-23
Publication date: 1928-01-31
Anticipated expiration: 1945-01-31

Description

Jan.'3l`, 1928.

H. H. BROWN AUTOMoBLE JACKA Filed June 25. 1921 Patented Jan. 3l, 1.928.

vmuffin) STATES HAROLD H. BROWN, CF CENTERPORT, NEW YORK.

AUTOMOBILE v JACK.

Application led June 23, 1921-. Serial No. 479,742.

rl`his invention relates to jacks, and more particularly to jacks `of a type `that areV in common use in connection with automobiles.

It frequently happens that in running an automobile, the rear wheels become partially embedded in sand or mud so thatl it 1s n npossible to kextricate the automobile by its own power. When this occurs, a powerful l0 pulling device is needed to extricate the car. To meet this need, special pullingdevlces have been produced, but these devices are comparatively expensive and occupy a considerable part of the storage space yof the lcar. l mi The principal object of the present invention is to produce a jack of the general type above referred to, which may be employed in the usual manner to jack up the axle of an automobile, and whichalso maybe conn venientlyvemployedfas a powerful pulling device to start -the car when the rear wheels have become embedded. y h

With this object in view, the invention comprises the novel andyimproved features,

l constructionsandcombination ofparts hereinafter described andV particularly pointed out in the claims, vthe advantages ofwhich Willbe readily understood and appreciated 3 by thoseskilled inthe art.

l`The invention will be clearly understood `from the accompanying drawings illustrating the invention in its preferred form and the. following detailed descrlptlon` of the construction therein shown.` In thedrawings, Fig." 1 is a view infront elevation partly insection 0fa jack embodyin the invention; i 1

ig. 2' is a viewfin `side' elevation of the 'ack'f y f l Figs. 3 and 4are plan Vviewsillustrating the jack in operation; and t VFigL is a detail plan View showing modified constructionl of the base plate of the jaclinl Y Y Y The invention maybe -embodied in `any convenient form of jack comprising a base or support and a liftingbar or slidefmouuted to slide longitudinally relatively to'said base. In the form of the invention illustrated in the drawings,` the jack comprises a standard' 2 mountedfon a base plate 8, and a liftingbar or slide Lllmofunted toslide longitudinally in the standard 2. The slide 4 is actuated by the rotatiouof a .bevel gear 5 rotatably mounted on the lower endofthe slide and having a. threaded engagement therewith.y The gear 5 is in mesh with-asecondbevel gear 6 fixed inthe bearings in the standard 2. VVTothe outer end'of the shaft 7 is attached a toothed wheel 8 adapted to be engaged by either end of `a doubleended pawl 9 pivoted at 10 ony an operating lever v11 loosely mounted on the outer end of the shaft 7.- The pawl is acted upon by a leaf spring 9 mounted on the lever`11 and arranged to engage a vprojection on the pawl i so as to hold either end thereof in engagement with the toothedwheel 8. The toothed wheel 8 thus may be rotated to actuate the slidei'by the oscillation'of thelever 11.v

lVith the proper adjustment of the pawl 9, the toothed wheel may be rotated in either direction to raise or lower the slide 4:.

To enable the jack to be employed as a pulling device, a device for the attachment of a connecting member such as a bar, `rope or cable, is mounted on the slide l preferably at its outer end. Preferably, this device consists of a Ahook indicated at 14`in the drawings facing 1n thedirectlon of movement of thev slide Il.f As shownv in thedrawi soA ings, this hook is passedthrough one linky of i a chain 16, which constitutes the connecting member through which the pulling force of the jack is exerted.` `The base 3 of the jack is extended on the side on which the hook 14 is arranged to support thefja'ck when used as a pulling device and the base .is provided with a slot 18 through which the chain may be passedwhen the jack is infuse as a pulling device. 'Y

.f In using the jack asa pulling device, the base of the jack maybe engaged with a tree, stake or other abutment, andthe hook 14:- is inserted in one ofthe links of thechalin 16,

as shown inFig. 3. The other end of the Y Y 'chain is then attached -to the axle or any' other suitable part of the car. When'the ack is connected with the car in thisfmanner and the lever 11 isfactuated to project the slide 4 from the standard 2, the car willbe pulled along by the action of the jack.' If the projection of theslide l to thelimit of its movement relatively to the standard 2 is not sufficient completely to eXtricate the car, the slideafter one.` complete projecting movement Vthereof may be forced vback; to

starting position again, fthe hook ,14A-disengaged from the linkin the `chainV `16 and M inserted in another link in the chain nearer the ear, and the operation repeated.

Instead of holding the standard of the jack stationary by placingr the base of the jack against an abutment, provision is also made for attaching the standard to a stake, tree or similar member by means of a cable or chain. In the construction shown, two laterally projecting hooks 1S adapted to be inserted in the links of a chain or in loops in a cable are secured to the sides of the standard. These hooks face in a direction opposite to the direction of the movement of the slide 4.

In using the j ach in the manner shown in either Fig. 3 or that shown in Fig. 1, the jack is preferably laid upon the ground and may be held from turning about its point of support by one or more stakes driven into the ground at the sides thereof. Such a stake is indicated at. 23 inFig. 3.

As shown in Fig. 4f, the standard of the jack is attached to astalze 20 by means of a chain 22 passed about the stake and having its ends attached to one of the hooks 18 by the insertion of the hook through the linlgs thereof. lVith the jack thus attached to the stake 20, the jack may be used as a pulling device in the manner hereinbefore described.

llVhen the slide 4 has been projected to the limit of its movement and it is desired to hold the car in position while the slide is being forced back to starting position and the hook 14 is engaged in another link in the chain 16, a pin, bolt or suitable tool may be passed through one of the links in the chain adjacent the base plate and between the same and the hook 14. In order to hold the pin from sliding otf the base plate, projections 24- may be formed on the base plate so as to engage the pin as shown in Fig. 1, the pin being illustrated in dot and dash lines in this figure. If a cable or bar is substituted for the chain 16, a suitable clamp may be employed instead of the holding pin to hold the cable or bar in position.

Instead of a slot in the base plate being provided for the passaee of the chain 1G, the

ase plate may be tormed with a hole through which the chain is passed so that the engagement of that part of the base plate surrounding the chain with the chain will assist in holding the jack in position during the operation thereof.

Fig. 5 of the drawing shows a construction in which the base plate of the jack is formed with a slot indicated at 25. the outer end of which is closed by a roll :7.6 mounted to rotate on a pin QS passing through the roll and having its ends engaged in the spaced portions of the hase plate. This construction provides an opening in the hase plate through which the chain may be passed, and the roll QG constitutes an anti-friction device for engagement with the chain during the operation of the jack.

The jack notk only may be' employed in the manner described as a pulling device to pull the car along. but it also may be employed advantageously as a lifting device to litt the engine out of its bed or to lift other heavy weights. 1n using the jack as a lifting device, a chain may be thrown over the limb of a tree or other suitable support and its ends attached respectively to the hooks 18 on opposite sides of the standard The chain 1G is then attached to the engine or other object to be lifted.

The construction above described, which enables the jack to be employed as a pulling device, does not interfere in any Way with the normal operation of the jack.

It is to be understood that except as delined in the claims, the invention is not limited to the particular construction and arrangement of parts of the illustrated embodiment of the invention, but that the invention may be embodied in other forms within the scope of the claims.

Having explained the nature and object of the invention and having specifically described a device embodying the invention in its preferred form, what is claimed is- 1. A jack adapted for use as a lifting or pulling element, comprising a base, a lateral extension projecting from said base and having a passage therethrough, an abutment adjacent the outer end of said lateral extension, a standard projecting from said base, a bar mounted in said standard and having movement longitudinally thereof, means mounted on said standard for moving said bai', a head carried by the outer end of said bar, a hook carried by said head, said hook adapted to occupy a position in alignment with the passage through the lateral extension of the base, and hooks carried bj said standard and diametrically opposed with respect to each other and substantially right angularly disposed with respect to the hook arried by the head, whereby to provide attaching means for an anchoring means for the jack when used as a pulling element without interference with the operation of the bar and its associated hook.

2. A jack adapted for use as a lifting or pulling element, said jack comprising a base, a lateral extension projecting from said base and having a passage therethrough, an abutment adjacent the outer end of said lateral extension, a standard projecting from said base. a bar mounted in said standard and having movement longitudinally thereof, means mounted on said standard for moving said bar, a head carried by the outer end of said bar. a hook carried b v said head and providing means for attaching a pullingr con nection to said bar, said hook adapted to occupy a position in alignment with the passage through the lateral extension of the base when the jack is used as a pulling element, and a plurality of oppositely disfil) IOS

posed hooks carried by said standard and arranged in a plane Vat right angles to the lateral extension of the base and the aforementioned hook Carried by the head, said oppostely disposed hooks providing an attachment for means whereby the jack may be anchored when used as a pulling element Without interference with the operation of the pulling connection attached to the hook of the head. l

Signed at New York city, N. Y., this 17th day of June, 1921.

HAROLD H. BROWN.