US1102792A - Lifting-jack. - Google Patents

Description

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LIFTING JACK. APPLIOATON FILED HAB. 24, 1913.

Patented July 7, 1914 Z SHEETS-SHEET 1.

R. C. PATTON.

LIPTING JACK.

, 913. 1,102,792, Patented July 7, 1914 2 SHEETS-SHEET 2.

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RALPH CLIFTON PATTON, F PROVIDENCE, RHODE ISLAND.

LIFTING-JACK.

Specification of Letters Patent.

Patented July 7, 1914.

Application led March 24, 1913. Serial No. 756,348.

To alt whom it may concern:

Be it known that I RALPH C. PA'i'roN, a citizen of the United `tates, and resident of the city of Providence, in the county of lrovidonce and State of Rhode Island, have invented certain new and useful Improvements in Lifting-Jacks, of which the following is a specification.

This invention relates to lifting jacks and has for its object to provide suoli a jaclg of simple, durable and practical construction, the same being provided with improved means whereby the base portion is capable of relative universal adjustment.

It is found in the practical use of a jack of this character particularly in automobile work, that when the same is used outl on the road, it is often difiicnlt to operate the jack to advanta e owing to the unevennesses or inclination o the road surface, therefore to obviate this difficulty Iliavc provided simple and practical means whereby the base portion may receive a universal-adjustment and be set on any angle relative to the body of the jack, whereby it will accommodate itself to the angularities of the surface and find a firm footing.

To further perfect -the o eration of this.

improved jack I have provi( ed a sim le and effective locking mechanism to firm y bind and secure the standard to the base at any angle thereto thereby makin the jaclc as stili' and rigid as though the gasa were permanently fixed to the body portion.

The invention further consists in providin a hollow supportin base having spherica ly shaped inner and outer surfaces and a pair of clamping members adapted to secure the standard to the base in any desired anglo relative thereto.

The invention still further consists in securing the lower clamping member to the standard in such a wa that it may be longitudinally adjusted in order to regulate the action of the clamping cam and to also provide the standard and this inner clamping member with a central opening therethrou h whereby the extending mem er may pass t erethrou h in order to house such a member of maximum length in the standard so as to obtain the greatest extension possible'with'a jack of a 'ven height.

With these and ot er objects in view, the

invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the ap )ended claims.

t f the accompanying drawings: Figure 1- is a perspective view illustrating my improved jack as applied to the axle of an automobile. Fig. 2- is a side elevation, partly in section, illustrating the lower portion of the hollow standard, the spherically shaped hollow base and the cani actuated clamping) means for securing the standard to said ase. Fig. 3 is a modification showing the lower. end of the standard of a sli htly different shape, the same being provi ed with another form of cam locking means which operates through a coarse threaded screw. Figs. 4 and 5.- are plan views and side elevations, respectively, partially in section, showing another modified form of cam actuated clamping members for securing the standard to the base in any .de-

sired position relative thereto. Fig. 6 is a detail of the cam lever for operating the mechanism shown in Fi s. 4 and 5. Figs. 7 and 8-show a plan View and side elevation, res ectivel of another form of cam vmember or bin ing the standard to the base at any desired degree of adjustment, Fig.

8 being partially in section on lino 8--8 of Fig. 7. Fig. 9 is another modification illustrating another arrangement whereby the standard may be secure to the-base.`

Referring tothe drawings, 10 designates the standard of the lifting jack which -may be made in any desired form, but which is preferably provided with a hollow center portion 11 in which the extending member 12 is housed. Any desired mechanism, not shown, may be mounted in the casing 18 to be operated by the handle 14 for forcing outwar and withdrawing the extending meinber, but I do not claim any particular mechanism for performing this function as any now on the market may be em loyed in the operation of my improved jae c, theessential feature of which is the adjustability of thebaseand the means for locking the samein adjusted position as presently described.

The base member- 15 isl preferably'eon-l structed hollow having spherically shaped inner and outerl surfaces 16 and 17, respectively, forming a comparatively thin wall or shell with its upper center portion at 18 removed. Thelower portion of the shell is provided with feet 19 preferably three in number, so arranged that the space between them is suflicient to admit the 1nner clampin member 20. The .outer surface 21 of this inner clamping member is also made in a spherical shape to correspond with the inner iae'e of the base,`and its center portion is hollow and threaded as at 22 for the reception of the lower threaded end 23 of the standard 10. A locking screw 24 is inserted into this inner clamping member to spring the threaded portion and bind the member in position on the threaded standar The outer clamping member or shoe 25 has an inner concaved surface correspondinv to the outer convex surface of the base an a. lockingcollar 26 rests upo'n and is rotatably mounted on the up er face of said shoe 25. The upper face ofp this collar is provided with a plurality of cam surfaces 27 to correspond with and engage oppositely formed cam-surfaces 28 on the underside of the flange 29 of the standard 10. This cam collar is also provided with an actuating handle 30 whereby it may be readily rotated about the end of the Standardy to cause said inner andouter clamping members to clamp and' bind the shell of the base between them and retain the standard at any desired relative angle to the base.

n operation when my improved jack is ositioned beneath the axle Vof an automobile, or other work, where the surface ofthe .round is slopinfr, in order to obtain a firm footing upon suci ground or road bed, it is only necessary to move the handle'30 of-the cam collar to the right thereby releasin the base andpermitting it to move in any irection relatlve to the standard and adjust itself to find a secure footing. The handle 30 is then moved back or to the left forcin the cam surfaces 27 a ainst lthose 28 of the standard, thereby inding the inner and outer clampin members lagainst the o posite faces of tie base wall'securely loc ring lee the two together.

A further advantage of the construction shown in Fig. 2 is that the center portion of the standard 10 is hollow Vcompletely through ,its lower end, thereby permitting an extending member of maxlmum length to be housed in the standard.

T-he construction Shown in Fig. 3 is somewhat similar to that illustrated in Fi 2 with the exceptionthat the lower end .o the standard 10 is smaller or not large enough to haveahole Y,through it of afsze eufiicient to receivethelower end of the extending membeLmnd-#iustead efe. lurality of independenteam surfaces. a .i lustrated in Fig.

2, .this portion of the standard is provided with what is considered the equivalent of said cams, which is that of a square threaded screw 32 which has substantially the same efl'ect upon the binding collar 31 as the cams 27 and 28, viz., to bind the clamping members 53 and 54 to the curved wall of the base.

Another form of cam action for binding the standard to the base is illustrated in Figs. 4 and 5 in which the inner clamping member 33 is provided with upwardly extending ears 34 which project through apertures 35 in the outer clamping member 3G which latter is cast with or otherwise permanently connected to the standard 37 and a cam lever 3S, see Figs. 4, 5 and is made in the form of a yoke with its ends 39 and l0 made in the shape ot' a cam and is connected to the lower clamping member through pins 4l, and 42 whereby when this lever 1s pressed downward said cams serve to draw the lower clamping member upward and binds the standard to the base.

It will be noted that in Figs. 4 and 5, the outer clamping member is fixed to the standard and the inner clamping member is raised to engage and bite the inner face of the base, while in Figs. 2 and 3 the reverse is the case, that is, the upper member is loose and is pressed downward to grip the wall of the base.

In the construction shown in Fig. 9 the lower end of the standard 43 is made in a spherical shape and is retained in a base 44 having a plurality of upwardly extending fingers 45 which are provided with a corresponding spherical surface on their inner faces to receive the ball orspherical end of the standard whereby relative universal ,movement may be had.

The upper ends of these fingers are threaded as at 46 on a taper and a nut 47 is adapted to be screwed onto this tapered portion for the purpose of springing inward these fingers causing them to grip and bind the ball end of the standard 43 to retain it at any desired relative degree of adjustment therein.

The structure illustrated in Figs. 7 and 8 is similar to that of Fig. 9 with the exception that the ring 48 is provided with a plurality of cam surfaces 49 which engage the ends of the fingers 50 whereby a rotating movement of said ring in one direction springs the fingers inward to bind t-he spherical end of the standard therein and a movement in the other direction releases the same. Screws 51 are inserted into the ends of each finger and' a collar 52 is secured be neath the head overlapping the ring for the purpose of preventing the ring from workmgfrom the ends of the fingers.

have shown and described a number of different forms of adjustable bases and means for locking the same to the standard,

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but any means for accomplishing this purpose will fall within ythespirit and scope of this invention.

I claim:

1. A lifting jack comprising a standard, an extending member therein, a supporting base, a clamping member within said base, and means exteriorjfof said base for operating said clampingfiember-for locking said base and standard together at any desired angle. a

2. A lifting jack comprising a standard, an extending member therein, a supporting base, a clamping member within said base, a clamping member exterior of said base and cooperating with said first mentioned member to lock said standard and base together at anyy desired angle;

3. A lifting jack comprising a standard, an extending member therein, a supporting base, a clamping member Within said base, a. clamping member exterior of said base and coperating with said irst mentioned member, and alever for operating said exterior member to lock said base and standard together at an desired angle.

4. A lifting jac comprising a standard, an extendin member in said standard, a supporting said standard may receive a universal movement relative to said base,- and a cam for locking said base and standard together in any desired relative position. v.

5. A lifting jack comprising a standard, an .extending member in said standard, a base member, means whereby said standard may receive a universal movement relative to said base, and a readily adjust-able cam collar for locking said base and standard together in any desired relative posit-ion.

6. A lifting jack comprising a standard, an extending member in said standard, a supporting base formed pf a shell curved on both its inner and outer surfaces, a pair of clamping members engaging said inner and outer curved surfaces of said shell, one of said members being connected to said stand# ard and the other free to be moved, and means for clamping said members to said vbase for retaining the standard and base in any desired relative position.

7 A lifting jack comprising a standard, an extending member in said standard, a supporting base formed of a shell curved on both its inner and outer surfaces, a pair ase member, means whereby' of clamping shoes engaging. said inner and outer curved surfaces of said shell, one of said shoes being connected to said standard and the other free to be moved, and cam mechanism for clamping s id members to said base for retaining the s andard and base in any desire-d relative position.

8. A lifting jack comprising a. standard, an extending member in said standard, a hollow supporting base having spherically shaped inner and outer surfaces, a clamping member engaging the inner face of said base, said standard being connectedto said inner clamp, and a second clamping member engaging the outer surface of said base and a cam collar for readily binding said clamps to said base whereby relative universal movement of said base and standard may be obtained.

9. A lifting jack comprising a' standard, an extending member in said standard, a hollow supporting base having spherically shaped inner and outer surfaces, a clamping member engaging the inner face of said base, said standard being connected to said inner clamp, and a second clamping member engaging the outer surface of said base and a cam collar for readily binding said clamps to said base whereby relative universal movement of said base and standard may be obtained, and means whereby said inner clamping member may be adjusted on said standard to control the biting action of the Vloclring cam. 4

10. A lifting jack comprising a standard, an extending member in said standard, a hollow supporting base having spherically shaped inner and outer surfaces, a clamping member engaging the inner surface of said base said standard being adjustably cont

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