US453204A - Tire-tightener - Google Patents

Description

(No Model.)

M. J. MGKINNON.

TIRE TIGHTENBR. Y No. 453,204. Patented June 2,1891.

UNITED i STATES PATENT OFFICE.

MCHAEL J. MCKINNON, OF SALEM, OREGON.

TIRE-TIGHTENER.

SPECIFICATION forming part of Letters Patent No. 453,204, dated June 2, 1891.

Application led November 8, 1890. Serial No. 370,818. (No model.)

, a naturalized citizen of the United States, re-

` right angles to Fig. l.

siding at Salem, in the county of Marion and State of Oregon, have invented certain new and useful Improvements in Devices for Adjusting Tires; andl do declare the following to be a-full, clear, and exact description of the invention, such as will ena-ble others skilled in the art to which it appertains to make and use the same.

Hy invention has relation to improvements in that class of devices known as tire-tight-4 eners or spoke-adj usters; and it consists in a construction applicable to the end of a spoke, whereby the length of such spoke may be increased or reduced to attain the above-mentioned result. A j

The improvements will be fully understood from the following description and claims when taken in connection with the accompanying drawings, in which- 'Y Figure lis an elevation of my improved device, embodying the several parts and illustrating to a better advantage the gibs upon the sleeve or adjustable section. Fig. 2 is a longitudinal section of the same, taken at Fig. 3 is a detail perspective view of a portion of the adjustable sleeve-section of my improved device. Fig. 4 is an elevation of the eXteriorly-threaded socket which receives the end ofthe spoke and on which the other parts are mounted. Fig. 5 is an elevation of my improved device in position upon a wheel-spoke.

Referring by letter to the said drawings, a

indicates the spoke-receiving socket of my improved device which has a slightly tapering smoothbore, and is shouldered at its lower end, as better shown in Fig. 2, whereby it is seated upon the shoulder of the spoke which takes up through its bore, and this socket-section ct is also provided at its upper or outer end with a slight inwardly directed annular iiange, as better shown in Fig. 2. Mounted upon the said socket-section a, which is externally threaded from its shouldered portion to its outerend, are two internally-threaded nuts b b', the nut b of which is adapted to adjust a sleeve-section presently to be described, while the nut b is designed to act as a jam or lock nut for said adjusting-nut, whereby it is prevented from casual displacement when adjusted to the desired position.

c indicates` a smooth-bore sleeve-section, which is of a diameterin its lower portion to take over the threaded socket-section a., and has its lower edge resting upon the outer nut Z9, whereby it is adjusted with respect to the spoke, as will be presently described. This sleeve-section c, which has its upper or outer portion reduced in diameter, whereby a shoulder is afforded as indicated by d, is provided at such shouldered point with opposite directed dished 4gibs e, which are designed in operation to span the inner edge of the felly B, whereby the same is strengthened and prevented from splitting, which might ordinarily occur when the reduced tenon portion of the adjustable section c is turned vtightly up into the felly.

In operation, the socket-section ct, having the nuts Y) b thereon, is mounted on the outer portion of the spoke, which is reduced to receive the same, a shoulder upon which the socket rests being afforded by the reduction of the spoke. The sleeve-section c is then mounted upon the further reduced end of the spoke, and its lower portion, which surrounds the socket-section ct, rests upon the nut ZJ, whereby it is adjustedwith respect to the spoke and socket section thereon. The reduced or tenoned end of the section cis then inserted in the socket of the felly and the nut b turned unt-il the sameis properly tightened, when the jam-nut is turned up against said nut b to lock the same. On the other hand,- it is obvious that if the spoke is too tight by reason of shrinkage of the t-ire and felly the direction of the turning of the adjusting-nut may be reversed and the spoke thereby shortened.

As regards the jam-nut b', it is obvious that if desirable it may be dispensed with, although its use is preferable to prevent casual play of the adj usting-nut.

Between the shoulder of the section d and the jam-nut, and between said jam-nut and the adjusting nut, and between such adjusting-nut and the bottom of the sleeve-section, I prefer to place soft Washers, but do not desire to confine myself to their use, as they are not essential.

IOO

seen that a device of the character described may be permanently mounted upon a spoke without detracting from the appearance of the Wheel, and that by the employment ot' such devices the spokes are greatly increased in strength as is also the connection between the spokes and telly, and but little Weight is added to the wheel.

In the practice of n1y invention it is obvious that the several parts may be formed in any suitable manner and from a suitable maferial; and I do not desire to limit myself to the precise forni shown, inasmuch as such modiiieations may be made as fairly fall within the scope of lny invention.

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

1. In atire tightening andadjusting device, the combination, with a smooth-bore socketsection externally threaded and adapted to receive the end portion of aspoke, of a screwthreaded nutadapted to turn upon the threads ofthe socket-section,and an adjustable sleevesection surrounding said socket-section and bearing upon the adj listing-nut thereon, said adjustable section being adapted to engage a felly, substantially as and for the purpose described.

2. The combination, with a smooth-bore socket-section externally threaded and adapted to receive the end port-ion of a spoke, of a screw-threaded nut adapted to turn upon the threads of the socket-section, and an adj ust able sleeve-section surrounding said socketsection and bearing upon the adj usting-nut thereon, said adjustable section being reduced in its upper portion to form a tenon to enter the telly, substantially as specified.

3. The combination, with a smoothbore socket-section externally threaded and adapted to receive the end portion of a spoke and a screw-threaded nut adapted to turn upon the threads of the socket-section, of an adjustable sleeve-section surrounding the socketsection and bearing upon the adjusting-nut thereon, said adjustable sleeve-section being reduced in its upper portion to form a tenon to enter the Wheel-telly, and having oppositely-directed dished gibs at the base of said reduced portion, substantially as and for the purpose described.

4. A tubular section shouldered at its lower end and externally threaded, an adjusting screw-threaded nut turning on said tubular.

section, and a jam-nut also turning on said section and adapted to lock the adj usting-nut, in combination with a sleeve-section adapted to surround the socket-section and bear upon the adjusting-nut thereon, said adjustable section being also adapted atits upper or outer end to engage a felly, substantially as 'and for the purpose described.

5. A tubular section externally threaded and an adjusting screw-threaded nutturning on said tubular section, in combination with a sleeve-section adapted to surround the socket-section and bear at its lower end upon the adjusting-nut thereon, and two oppositelydirected gibs at the upper end ot' said adjustable sleeve-section adapted to bear upon a telly, substantially as and for the purpose described.

M. J. MCKINNON.

Witnesses:

J. W. BERRY, D. D. DICKEY.

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