US1510022A - Spreading jack - Google Patents

Description

ept. 30 1924. 1,510,022

.1. D. TUCKER SPREADING JACK Fi led June 1 1. i923 INVENTOR.

JD. Tuck e1" BYQ 8 g 2 ATTORNEY Patented Sept. 35

UNITED STATES JESSE D. TUCKER, fiilCRAMENTO.

GALIFOR-Nld, TO BROTI'JIERS MANUFACTURING CQMPAN OF SACRAMENTO, GALIFORNIA.

SPREADING JACK.

Application filed June 11, 1923.

i To aZZvr/mm 6/ may concern:

Be it known that 1, Jesse D. TUCKER, a citizen of the United States, residin at Sacramento, county of Sacramento, otate of California, have invented certain new and useful Improvements in Spreading Jacks; and I do declare the following to be a full, clear, and exact description ofthe same, reference being had to the accompanying drawings and to the characters of reference marked thereon, which form a part of this application.

This invention relates to improvements in a type of jack especially adapted and in tended to be used to spread the felly and spokes of wooden vehicle wheels for the purpose of enabling spoke tightening shims, such as are featured in Patents Nos 1,424,530 and 1,411,391, being inserted between the felly and any spoke.

The principal object of this invention is to provide a jack especially adapted to be used in connection with heavy truck wheels, which are usually so constructed that there is too little space between the hub and the felly for the insertion of a jack, such as is shown in my co-pending application, Serial No. 522,066, filed December 13th, 1921. Such truck wheels also have a considerable depth of hub and felly which would make it awkward to insert and manipulate a jack such as shown. in the above mentioned application, granting that it were otherwise possibleto use the same on trucks.

The present jack is supported from the ground beyond the wheel and carries arms, the ends of which are inserted between and rest against the hub and felly, and the arms are so constructed that the depth of the hub and felly do not interfere with the ready operation of the ack.

Another object is to construct a jack in such a manner that it may be used with equal facility regardless of the diameter of the wheel or the distance between the hub and the felly itself.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusalof the following specification and claims.

In the drawings similar characters of refwhich are to be spread Serial No. 644,717.

erence indicate corresponding parts in the several views:

Fig. l is a side elevation of the jack. Fig. 2 is a cross-section of the line 2-2 of 1* 9 1,2. 0 13 mg arm.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes a base or standard adapted to rest on the ground, in which is slidably and .turnably mounted a post 2 which carries on its upper end a vertical frame Pivoted in this frame and extending therefrom in a substantially horizontal direction are upper and lower arms 4 and 5 respectively, these being in vertical alineinent with each other. The outer-end of the lower arm 5 is formed as a V in cross-section, as shown at 6, this portion being adapted to rest 011 the hub between any two adjacent spokes. The outer end of the upper arm 4 carries an adjustable screw 7 substantially in vertical alinement with the V-shaped pad 6, and has on its upper end a swivel or universally mounted pad 8, such as is shown and featured in the above mentioned co-pending application, this pad being adapted to bear against the felly.

In. the operation of the jack the base is set on the ground and placed with respect to the wheel so that the outer ends of the arms 4i and 5 'vill project between the spokes the post 2 being set and maintained at a desired height in order to maintain these arms substantially at right angles to the wheel by means of a form of set screw 9 threaded into the base 1 and bearing against the post 2.

The spreading of the felly away from the spokes, in order to enable the shims to be inserted therebetween, is accomplished by moving the outer ends of the arms 4 and 5 apart. This is done by means of a pair of super-imposed rollers 10 which bear against and ride on the adjacent faces of the arms, which are of sufficient width for the purpose. These rollers are mounted in a frame 11, the upper and lower edges of which overhang the corresponding edges of the arms so as to maintain the rollers in proper engagement with the arms at all times. These rollers and their frame are moved lengthwise of the arms by means of a screw 12 threaded through a support 13 fixed in the frame 3,

an end view of the lower spread said screw having a handle 14; on its outer end whereby the screw may berotated and advanced through its support, and consequently advance the rollers likewise.

The arms 4 and 5 normally converge to wards each other towards their outer ends, the degree of convergence lessening towards said outer end so that as: the rollers approach said end they will more lengthwise a great distance to effect a relatively small raising of the arms. At the opposite ends of the arms, however, the reverse is true. In other words at the outset of the spreading opera.- tion, when the rollers are near the frame 3, the arms are then spread with considerable rapidity, since atthat time they may be considered as just taking a fir i hold on the parts to be spread. As the rollers advance, however, and the arms continue to spread, the resistance offered to their spreading of course becomes greater, and by thus reducing the slope of taper the pressure or strength necessary to then turn the handle 1d is, if not reduced, at least not increased to a point where it would require undue effort on the part of the operator to manipulate the jack.

'The frame 3 is preferably pivoted onto the post 2, as indicated at 3, so as to take the strain off the post and base when the arms are spread.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the resent and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure' from the spirit of the invention, defined by the appended claims.

, Having thus described my invention what I claim as new and useful and desire to se cure by Letters Patent is:

'1. A ack comprising a vertical frame, arms projecting horizontally from the frame and adapted. to be inserted between the hub and. felly of wheel, and means mounted on the frame for spreading the outer ends of said arms.

2. A jack comprising a vertical. frame, arms projecting horizontally from th frame and adapted. to be inserted between the hub and folly of a. wheel, said arms being in vertical alinement and their adjacent faces converging towards each other to their outer ends, and means slidable between and en gaging said adjacent faces for spreading the outer ends of the arms apart.

3. A jack comprising a base, a vertical frame supported thereby, arms projecting horizontally from the frame and adapted to be inserted between the hub and felly of a wheel, said arms being in vertical alinement and their adjacent faces converging towards each other to their outer ends, vertically alined rollers mounted in common and positioned between and bearing against said adjacent faces, and means mounted in the frame for advancing said rollers as a unit lengthwise of the arms. l. A jack comprising a base, a vertical frame supported thereby, arms )rojecting horizontally from the frame and adapted to be inserted between the hub and folly of a wheel, said arms being in vertical alinement and their adjacent faces converging towards each other to their outer ends, vertically alined rollers between said adjacent faces and bearing thereagainst a frame in which said rollers are mounted, and a screw connected to the roller frame, and having threaded engagement. with the main frame, said screw being so disposed that when ro tated the roller frame will be moved lengthwise of the arms.

5. A jack comprising a base, a vertically adjustable member therein, a frame pivoted on said member. arms projecting horizontally from the frame and pivoted thereon, the axes of said arm and frame pivots being in parallel planes, and means mounted on the frame for spreading the outer ends of said arms.

6, A jack comprising a vertical frame, arms pivoted thereon. and projecting therefrom in spaced vertical alinement, means slidable between the arms for spreading the outer ends thereof. a screw connected to said means between the arms and extending through the frame and a block in which said screw is threaded pivoted on the frame.

In testimony whereof I afiix mv signature.

JESSE D. TUCKER.

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