US1778521A - Jack - Google Patents

Description

Oct. 14, 1930.

F. H. DEAL JACK Original Filed- Dec. 24

23 73 an ueucop Patented Oct. 14, 193G UNITED STATES FRED H. DEAL, OF BRIDGETON, NEXV JERSEY, ASSIGNOR, BY MESNE ASSIGNMENT S, TO

NEW JERSEY, A CORPORATION OF NEW ELMIRE CORPORATION, OF TRENTON,

JERSEY JACK Application filed December 24, 1923, Serial No. 682,531. Renewed April 15, 1927.

The present invention relates to an apparatus for elevating the axle of a vehicle so that a wheel thereon may be swung free of the ground. Objects of the, invention are simplicity and durability of construction to get-her with an adaptability of the parts thereof to be folded upon each other so as to form a compact device for transportation.

Another object of the invention is to so arrange the above mentioned parts that, when folded for transportation, they will lie in substantial parallelism with each other.

Another object of the invention is to produce a device of the above character which may be used in coo aeration with the power of the vehicle in raising the axle without the exertion of any human effort in raising the wheel. 7 i

Another object is the production of a device of the above character having a base member adapted to rest upon the ground and ariord a reciting surface and provision. of a member which will fall automatically into place to assist in supporting the axle in its elevated position and which may be readily dislodged by suitable means to allow the jack to rock to a position lowering the said axle.

Another objectof the invention to provide suitable means for dislodging said memer as above set forth.

Another. object is to so construct the jack that the tendency to slip on smooth surfaces will be overcome. i r Other objects and advantages of the invention will appear in the following specificatlon taken in connection with the" drawings forming a part thereof. ln the drawings:

Figure l is a side elevation of a jack in accordance with the present invention showing the jack in position to support an axle elevated and the foot dislodging lever in position to dislodge the foot for lowering an axle supported by the jack.

Figure 2 is a view of the jack as shown in Figure 1 looking at the the levebeing omitted.

Figure 3 is a side elevation of the jack, as in F igure 1, showing the same as rocked forwardly to lower the axle and for dislodging the jack therefrom.

Figure 4 is a side elevation showing the various parts of the jack. folded upon each other for transportation,

Figure 5 is a section on the line 55, Fig. 1, showing the sliding connection of the axlesupporting arm with one of the legs of the jack and also showing said arm as carrying a single roller.

Figure 6 is a view showing the axle-supporting arm carrying two rollers.

Figure '7 is a detailed view showing the U-shaped lung for connecting the free end of one of the legs with a hinged portion of the base member. 7

Referring to the drawings in detail by reference characters, 10 designates a load supporting member or one of the legs of the jack which. is provided with longitudinal grooves 11 forming slide-ways for the axle-supporting extension or arm 12, said arm having at its inner end cars 13 provided with lugs 14 adapted to slide in said grooves. The leg 10 is provided with a row of apertures 15 lying in parallelism wiilrsaid grooves, the ears 13 of the arm 12 being provided with apertures adapted to he brought into registry with the apertures 15 whereby said arm may be adjusted along the leg 10 and held in adjusted position by a pin 16 inserted through said reg'stering apertures. The arm 12 is preferably provided with members 12 spaced apart to form a kerf-and inset from the side surfaces of the arm, to provide shoulders 12" for a purpose which will later appear. The lower end of said leg is provided with a base or rocker 17 having a hinged portion. EX- tending forwardly from the lower end of the leg 10 is an ear 20 upon which is pivotally attached the stem 21 of the foot 22, said foot same from the left,

being adapted, when an axle rides upon the supporting arm 12 and the jack is rocked rearwardlv to a position as shown in Figure 1, to automatically fall into position to assist in tamper-ting the axle in its elevated position. The rear edge of the stem 21, when in the position shown. in l, rests against a slnnilder 23 provided at the forward end of the rocker 17, said shoulder being wider than the thickness of the stem 21 to provide a surface ag inst which the lever 29, hereinafter to be d3? ribed, may fulcrum in dislodging the it from the position as shown in Figure 1.

Extending rearwardly from a point ad jacent the upner end of the leg 10 is an ear 2-lto which a supplementary leg or brace 25 is pivotally attached. said leg having a forked construction at its upper end, the members 26 of which receive therebctween the ear 2%. The extension 18 of the rocker is provided near its free end with a U-shapcd lug 27 adapted to receive between the side .men'ibers thereof the lower end of the leg 2;) when the jack is set up for use; the arrangement and construction of this lug being such that the leg may be readily connected to and disconnected therefrom to prevent the leg 25 from slipping or turning over. The outer end of the arm 12 is preferably provided with a roller 28 mounted on a pin 28, which is adapted to assist the mounting of an. axle on the arm 12 and to prevent the scratching or otherwise marring of the said axle. Another function of the roller 28 is to absorb some of the vehicle thrust of the jack tending to slide the jack along the ground. This will be better appreciated when it is considered that this roller 28 or some equivalent yieldable means takes up some of the energy of the moving vehicle by slightlv the vehicle as it passes over the roller.

ll ith certain types of vehicles it may be dcsirable to use more than one roller, and the construction of the arm described above is to provide for this contingency. I therefore provide in connection i I h my device an extra roller 28" and a longer pin 28", whcrelrv the pair of rollers 28 and 28" may be mounted symmetrically with relation to the arms 19 opposite the shoulders 12.

For use in connection with the above described device ll provide a lever member 29. This lever is bent adjacent one end, as at '30, whereby, when the lever is placed in the po ion as shown in F {urc 1. its bent portion 30 will rest against the shoulder 23 and its lower end will contact with the rear edge of the foot 22. The opposite end of the lever is prefe ably provided with a weight 32 in the form of a wedge, the. inclined surface of which may be used to initially raise the vehicle wheel in rumjiing the same onto the arm of the jack. lVhile the wedge may be used for this purpose, the jack is constructed so that it may be used alone and so that the axle may run directly on to the arm while the w reels are resting on the ground.

In order to prevent slipping of the base members along the ground or on a smooth surface when an axle is being raised by the jack, the tread surfaces of said base members are provided with transversely arranged cleats .33. The tendency of the jack to slip is also minimized by the provision of the roller 28 which prevents a pushing thrust when the axle 3-1- is backed onto the arm 12.

It will be noted from the above description and the drawings that the curvature of the rocker 17 is greater adjacent the leg 10 whereby, for any adjustment of the arm 12 along the leg 10. the distance between the point of support of an axle on said arm for any point of adjustment of said arm to .the end of the leg 10 will be less than the distance to the end of the leg 25, so that, when the jack is rocked forward, as shown in Figure 3, the axle will be lowered and the wheels allowed to contact with the ground whereas, when the jack is rocked rearwardly to a position as shown in Figure 1 the axle will be raised, the relation of the axle to the jack being indicated at 34: in Figures 1 and 3.

In operation, the ack is set up as shown in Figures 1 and 3 with the end of the leg 25 inserted between the legs of the U-shaped lug 27. The tread surface of the base of the jack then placed upon the ground with the foot extending as shown in Figure 3, whereupon the vehicle is backed to a position as shown in Figure 3, the axle riding over the roller 28 and coming into contact with the leg 10 whereupon the jack is rocked rearwardly to the position shown in Figure 1, the foot falling automatically into place against the shoulder thus lifting the vehicle. lVhen it is desired to lower the axle. the lever 29 is placed in the position shown in Figure 1 with the bent portion resting against the shoulder 23 and the lower end 31 of said lever resting against. the rear edge of the foot 22 whereupon pressure may be exerten upon the opposite end of the lever either by hand or by placing the foot upon the wedge 32. The foot rotated forwardly on its pivotv Whereupon the ack will rock forwardly lowering the axle and bringing the wheels into contact with the ground. When it desired to transport the jack it may be folded upon itself as shown in Figure 4 and, when in this folded position. it will occupy a comparatively small space within a Vehicle.

Having described my invention what I claim new and desire to secure by Letters Patent, is

1. A ack for elevating vehicle axles, comprising a pair of legs connected together atone end and arranged at an angle to one another, an axle receiving seat carried by one of said legs, a shouldered base member at the other end of one of said legs, a foot having a stem extending therefrom hinged to said leg and adapted to be swung into a position against said shoulder.

2. A ack for elevating vehicle axles, comprising a pair of legs connected together at one end and arranged at an angle to one another, an axle receiving seat on one of said legs, a shouldered base member at the other end of one of said legs, a foot having a stem, extending therefrom and hinged to said leg, sid leg being adapted to be swung into a position adjacent said shoulder, and a lever member having a bent portion adapted to be inserted between said shoulder and said foot and to rock said foot about its hinge.

3. A vehicle jack of the type in which movement oi the vehicle on the jack rotates the same to raise the load, said jack being provided with a base on which the load is rocked, a load supporting member rising from the base, an extension hinged to said base and a brace hinged to said iii-ember and engaging said base extension.

A vehicle j a cl; of the type in which movea ment of the vehicle on the jack rotates the same to raise the load, said jack being provided with a base on which the load is rocked, a load supporting member rising from the base, an extension connected to said base and adapted to be collapsed or extended, a brace hinged to said lead supporting member and engaging the outer end portion of said extension to limit rocking movement o1 the load supporting member.

5. A vehicle jack of the type in which movement of the vehicle on the jack rotates the same to raise the load, said jack being provided with a base on which the load is rocked, a load supporting member rising from the base, an extension connected to said base and adapted to be collapsed or extended, a brace hinged to said load supporting member and engaging the outer end portion of said extension to limit rocking movement of the load supporting member, said load supporting member being adjustable in height with respect to said base, and said base having spaced pivotal portions on which the load is rocked during ra-isi. g and lowering thereof.

6. A vehicle ack of the type in which move ment of the vehicle on the jack rotates the same to raise the load, said jack being provided with a base which the load is rocked, load supporting member rising from the base, an extension connected to said base and adapt-ed to be collapsed or extended, a brace hinged to said load supporting member and engaging the outer end portion of said extension to limit rocking movement of the load supporting member, said brace being movable close to said load supporting member when said extension is collapsed.

7. A vehicle jack of the type adapted to raise the load with translation of the vehicle and comprising a pair of angularly disposed legs on which the load is carried when in raised position, and means for holding said legs in angular relationto each other while supporting the load, said legs being pivotally connected in their upper portions and adapted to be collapsed and moved into approximate parallelism when the load is removed, said means being in two parts, one of which is movable with respect to the other.

8. A vehicle jack of the type in which movement of the vehicle on the jack rotates the same to raise the load, comprising a load supporting member, load engaging member carried thereby, a base on which the load is rocked and means to enable the jaclr to be self-loading ano including rocking teeth on the base, the load engaging member being rotatable under movement of the load onto the jack to reduce thrust on the jack from such load movement tending to slide the jack on the ground, said jaclrbeing balanced in position for automatically receiving the load as well as in the load carrying position.

9. A vehicle jack of the type in which movement of the vehicle on the jack rotates the same to raise the load, comprising a load supporting member, a load engaging member carried thereby, a base on which the load is rocked and means to enable the jack to be selfloading and including the load engaging member being rotatable under movement of the load onto the jack to reduce thrust on the jack "fromsuch load movement tending to slide the ack on the ground, said aclr being balanced in position for automatically receiving the load as well as in the load carrying position, the shape of the base being such that rocking of the jack under load mor uniformly changes elevatioi'i of the load than if the curvature of the base were uniform.

10. A vehicle jack of the type in which movement of the vehicle on the jack rotates the same to raise the load, comprisng a load supporting member, a load engaging member carried thereby, a base on which the load is rocked and means to enable the jack to be self-loading and including rocking teeth on the base, the load engaging member being rotatable under movement of the load onto the jack to reduce thrust on the jack from such load movement tending to e do the jack on the ground, said jack being balanced in position for automatically receiving the load, as well as in the load carrying position, said base being curved on a shorter radius for ""Cliing during the early portion of load liltin movement than during the latter portion thereof.

11. A vehicle jack of the type in which movement of the vehicle on the jack rotates the same to raise the load, comprising a load supporting member, a load engaging member carried thereby, a base on which the load is rocked, a brace pivotally secured to said 10ml supporting member, a base extension to which said brace is attached, said brace and extension being collapsible for compactly folding, a, load engagin member which is retatable under movemcm of the load onto the jack to reduce thrust on the jack from such loading; movement tending to slime the jack on the ground, said ack being; balanced in its loading as Well as its lead carrying position.

In testimony whereof I have hereunto set my hand.

FRED H. DEAL CERTEFIGATE 9F CGRRECTEQN. Patent No. 1,778,521. Granted fleteber 14, 930, to

FRED H. DEAL.

it is hereby certified that the assignee in the abnve numbered patent was ermneeusly described and specified as Eimire Gerpemtfien", whereas said assignee should have been described and specified as E'lmere Corporation, as shown by the records 0 assignments in this ofiiee; an that the said Letters laient should be read with this correction therein that the same may cenfevm to the record of the ease in the latent Office.

Signed and seaked this 25th day of Novembey, A. D. 1930.

M. J. Meme, (Seal) Acting; Gmnmissiener of Patents.

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