US2550870A

US2550870A - Automobile jacking-up kit

Info

Publication number: US2550870A
Application number: US74014A
Authority: US
Inventors: Frederick D Saunders
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-02-01
Filing date: 1949-02-01
Publication date: 1951-05-01
Anticipated expiration: 1968-05-01

Description

May 1, 1951 F. D. SAUND`ERS AUTOMOBILE JACKING-UP KIT 2 Sheets-Sheet l Filed Feb. l, 1949 May l; 1951 F. D. sAUNDERs 2,550,870

I AUTOMOBILE JACKING-UP KIT Filed Feb. 1, 1949` 2 sheets-sheet 2 I1\V\ EEN TOR. A FR Eo .ER/CK 0, 5A moms ATTORNEYS,

Patented May 1, 1951 UNITED sTATEs YFFICE l 2 Claims. l

This invention relates to a means for preventing the slipping of a jack when the wheel of an automobile is to be raised by the jack when the car is on a smooth or an inclined surface.

One of the features ofthe invention isthe provision of a supporting block of rectangular form provided with a rectangular cavity in its upper surface for the reception of the base of a jack and with a rough surface on the bottom for preventing the slipping of the block on the roadway when in use with the jack. Y

Another feature of my invention is the provision of a packaged kit containing the various members to be used with a jack when jacking up a car, assembled and secured in fixed relation to each other; one of said members being the supporting block above specified and which, when not in actual use, is adapted to receive a pair of chocks neatly fitting therein, and a strap for securing the checks and supporting blocks to each other. The base block and chocks are intended for conjoint use, one to guard against displacement of the jack from its normal position, the= other to prevent longitudinal movement of the car while the jack is in use.

Having now described in a general way the nature and purpose of this invention, I will proceed for illustrative purposes to a detailed description of a preferred embodiment thereof, with reference to the accompanying drawings, in

which: Y

Fig. l is a perspective view of a package of the assembled chocks and jack base support, secured to each other by the securing strap;

Fig. 2 is a transverse sectional view of the package shown in Fig. 1 ;v

Fig. 3 is a perspective view of the jack base support;

Fig. 4 is a perspective view of the chocks separated from each other; and

Fig. 5 is a perspective view of the jack base supporting block with a jack shown in dotted lines supported thereon.

The assembled package comprises a jack supporting block I0 and a pair of wheel chocks I2, I2 contained and neatly fitting therein and held therein by strap or belt members I4 and I5 secured to the block I0 and connectable together by the buckle I3. The block I0 is of rectangular form and is provided with a rectangular cavity I8, surrounded by a, flange 20, and adapted to receive a jack base. Jacks of different manufacture have base plates that are nearly always rectangular but which vary somewhat in dimen- $1011. The cavity of block I0 is of a width and length adapting it for the reception of the largest size jack base. With smaller sized jack bases a lateral slippage within the cavity may be permitted, but such slippage is so slight as to be practically negligible. The depth of the cavity in the base block is sufficient to insure against the base of the jack sliding from the cavity when the jack is used for raising an automobile and holding it so raised.

The entire bottom of the base block is covered with a non-slip member 22 secured thereto.

The chocks I2 are of triangular shape and of greater length than height; and when placed with their diagonal sides, or wheel chocking surfaces, 24, face to face, will just ll the cavity in the block. The bottoms of the chocks are also provided with non-slip members 26. The heel end of each chock is covered with a sheet 28 of plastic material into which have been bonded thousands of bead-like reecting lenses, for reflecting the light from oncoming automobiles at night when the chocks are in use on the highway.

The

non-slip members

22 and 26 on the block lil and chocks l2 are preferably formed of silicon carbide, grit No. 40, bonded to a drill cloth backing by water-proof resin adhesive, which is attached to the base and chocks by a Water-proof adhesive. If desired the edges of the non-slip members may be secured by tacks to prevent curling of the edges, particularly the edges at the ends of the chocks and base block.

When the block is used to support a jack while removing a wheel and assuming that the ground has any substantial slope, the block is positioned to have a corner point down grade. The jack 30 is then positioned with aV corner of its base 32 in the corner of the cavity pointing down grade, so no slippage at all can take place between the base 32 of the jack and the bottom of the cavity I8; and since the bottom of the block I0 is provided with a non-skid face, the jack will be prevented from the slightest slippage under load. On a perfectly level surface, unless the jack base entirely fills the cavity of the supporting block, some slight slippage may occur, but not enough slippage to allow the jack to deviate materially from a vertical position. Before lifting the automobile with the jack one of the wheels may be blocked against movement in either direction by the chocks, or the checks may be positioned to block two wheels.

Before and after use the chocks are positioned with their diagonal faces in engagement with each other and placed in the cavity` I8 in the block I0. The straps are then buckled to each other to form the kit into a neat package retaining the chocks.

What I claim and desire to protect by Letters 'Patent is:

1. A packaged automobile jacking-up kit, comprising a block having on its upper face a rectangular cavity for the reception and support of the base of a lifting jack when used for jacking up an automobileand having on its lower face a non-slip surface, a pair of triangular chocks for blocking the wheels of an automobile when using the jack, the chocks being assembledin the cavity in the base block, and afastening device secured to the block and adapted to overlap the chocks and retain them and'thesupporting block in packaged relation to each other.

2. The herein described automobile `jackingup kit for conjoint use in preventing, during jacking-up use. longitudinal movement of the automobile and for supporting thebase -of the lifting` jack and preventing- Ait from displacement fromrnormal position; the same comprising, a pair of chocks of equal size Yand-each ofthe shape of a right-angley triangle andv shaped to block A.the wheels of an automobile when using the jack,

and a base block having a rectangular cavity of uniform depth in its upper surface, the oor of the cavity providing a direct support for the jack when in use and its side and end walls insuring against slip of the jack base, the block having on, and throughout the area of, its underface, a nonslip surface, the chocks being of greater thickness then the depth of said cavity and of such size that when contacted with their longer sides abutting, they form a rectangle the length and width whereof approximate the length and width fof said cavity and neatly fit therein when the members of the kit are not in use.

FREDERICK D. SAUNDERS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,358,506 Bensberg Nov. 9, 1920 1,719,510 Hansen July 2, 1929 2,176,988 Cameron Dec.'24, 1939