US320477A - Jesse p - Google Patents

Description

(No Model.) l

J. P. JOHNSON.

WHEEL JACK.

No. 320,477. Patented June 23, 1885.

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UNITED STATES PATENT OFFICE.

JESSE F. JOHNSON, OF INDIANAPOLIS, INDIANA. y

WHEEL-JACK.

SPECIFICATION' forming part of Letters Patent No. 320,477, dated June 23, 1885.

Application [iled April 8, 18S5. (No model.)

To all whom it may concern Be it known that I, JESSE. F. JOHNSON, a resident of Indianapolis, Indiana, have made certain new and useful Improvements inWheel- Jacks, a description of which is set forth in the following specification, reference being made to the accompanying drawings, in the several figures of which like letters indicate like parts.

My invention consists in the peculiar form of a jack-screw the base of which is adapted to rest upon the hub, the upper part of the screw carrying a yoke which provides a rest for the felly, for the purpose of raising the felly, so as to admit the removal of abattered spoke without cutting the tire, and will be understood from the following description.

In the drawings, Figure 1 is a side view of my device, showing the spoke forced out of line by means of the crank-screw, and a metal .socket fixed upon the end of the spoke, the

dotted lines indicating the normal position of the Spoke when its head is entered into the socket and the pressure of the crank-Screw removed. Fig. 2 is a front view of my device, showing the projection formed on the base and top parts, to serve as guides for the spoke while being operated upon. Fig. 3 is a perspective view of the metal socket, and Fig. 4 is a longitudinal section of the same.

In detail, b is the east-iron base, having at its upper end a threaded bore to receive the lower end of the right-and-left screw, ls frs, being the upper and right hand part of the screw, which enters a threaded bore in the top of the jack, which is arranged to form a yoke having arms y y', connected by a crossbar, cb, the upper ends of the arms of the yoke having notches n a, which receive the felly f and partially inclose it during the operation of the device. A ratchet-wheel, mv, is bolted to the central shank of the right-and left screw, and pawls pp are pivoted on each side, so as to engage alternately with the cogs of the ratchet-wheel rw.

his a handle, which is intended to be inserted in the end of the case which carries the pawls, and sl is a slide held in place by a setscrew entering through a slot in the slide into the butt of the ratchet-case. This slide is adapted to move either way, and to pass over the rear end of either one of the pawls, pressof the pawl from engagement with the teeth of the ratchet-wheel. By this means either one of the pawls may be thrown out of gear and the ratchetwheel will turn freely in that direction, so that when the distance between the base and the top part ofthe jack is to beincreased the ratchet is moved in one direction, and when that distance is to be lessened itqis to be moved in the other, and only the pawl on one side is to be used at a time, the-oppo site one being held down by the slide si, which is moved so as to bind it at the rear end. cs is a crank-screw passing through the crossbar cb and having a swivel, sw, on its opposite end.

s is a metallic socket,which may be screwed into the felly from the under side, or bolted through the felly and the tire, as desired, and the socket-opening is conformed to the shape and size of the spoke. It is frequently the case that the end of the spoke which enters the felly becomes battered and worn by constant use and loose in the socket of the felly, and rattles, and heretofore, in order to remedy this difficulty, it has been found necessary to entirely remove the spoke and put in a new one, and as a consequence the tire has to be cut to allow such change to be made.

My device is intended to avoid the necessity of cutting the tire or of changing the spoke, and it operates as follows: Vith aine saw the spoke is cut through close to the underside of the felly, the jack is then applied, the base resting upon the hub, the ratchet turned so that the yoke is forced upward until the felly rests in the notches of the yokearms, the spoke being between them and between the guides g ofthe top and the base of the jack. By means of the erank-screw and its swivel, which lits against the side of the spoke, the spoke is forced out of line and out of the way, as shown in Fig. l, after having first been sawed through, so as to free it from the felly. A metal socket, s, is then fastened on the end of the Spoke, as shown in Fig. l, and the felly is then crowded up by means of the jack operated by the ratchet, until the end of the spoke, which has in the meantime been suitably fitted to the size of the socket by a burning-iron or any convenient tool, with the socket attached, will pass under the ing that end down so as to free the other end IOO vsubstantially as described.

and having one or more notches for the felly as described. 2 5

felly. The pressureY of the crank-screw is now gradually removed, and the spoke will then resume its normal position. The felly is now lowered by a reverse movement of the screw of the jack, and the operation is now completed by screwing the socket to the felly.

That I claim, and desire to secure by LetA ters Patent, is the following:

l. The wheel-jack herein described, com,- prising the right-audleft screw and base b, the yoke having arms y y', notches n n, united by the cross-bar eb, the crank-screw es, having swivel sw, and ratchet-wheel or nut connected with the right-and-left screw, with means forV operating the same, all combined 2. A wheeljack having a suitable base, threaded to receive the lower portion of' thel -right-and-left screw, a top Vpiece threaded to receive the upper portion of the saine screw,

to restin,in combination with a ratchet incohanisln for operating the same, substantially 3. A wheel-jack having a base and top adapted to be moved in opposite directions or drawn toward each other by suitable meehanism for operating a right-and-left screw entering t-he threaded openings in the top and i base, in combination with a screw mechanism operating` substantially at right angles to the liftingscrew, for pressing the spoke out of line, substantially as described.

4. A wheel-jack Whose base is adapted to rest against the hub, its upper part to press against the under side of the felly, the two connected by means of a right-andleft screw, and provided with guides for holding the spoke in place, and suitable mechanism for pressing the spoke out of line, all combined substantially as described.

5. A wheel-jack having a base adapted to rest upon the hub of the wheel, and a top piece provided witharms for receiving the felly, the two connected by means of a rightand-left screw,adapted to be operated in either direction by suitable ratchet mechanism having guides g on the top and base for partly inclosing the spoke, the crank-screw cs, provided with a swivel, sw, for forcing the spoke out ofline, all combined substantially as described.

In witness whereof I have hereunto set my hand this 15th day of January, 1885.

JESSE F. JOHNSON.

Vi tness es WM. E. BARTON, C. l. Jaoons.

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