US1420813A - Rim tool - Google Patents

Description

W. H. BUTTRAM.

RIM TOOL.

APPLICATION FILED IUNE'B, 1921.

1 420 13. Patented June 2 7, 1922.

aki'oz new WILLIAM HUMIPI-IREY BUTTRAM, OF. SALLISAVT, OKLAHOMA, ASSIGNOR 013 ONE- I-IALF TO B. KOBEL, ONE-FOUBTH TO W. D. MAYO, AND ONE-FOURTH TO 3. M.

MAYO, ALL OF SAIZ-LISAW, OKLAHOMA.

RIM TOOL.

Specificationof Letters Patent. Patented June 2'7, 1922,

Application filed June 8, 1921. Serial No. 475,940;

T 0 all whom it may concern:

Be it known that I, WILLIAM HUMP REY BUTTRAM, a citizen of the United States, re siding at Sallisaw, in the county of Sequoyah and State of Oklahoma, have in vented certain new and useful Improvements in a Rim Tool, of which the following is a specification.

My invention relates to automobile appliances and in particular to a tool adapted to be used for the contraction and expansion of demountable rims.

The particular object of the invention is to provide a tool of this character which may be readily applied or detached from a rim, and one which is designed to be applied to any size of rim, in such a manner that the rim may be expanded or contracted with the minimum amount of energy on the part of the operator.

A further object of the invention is to provide a tool of this character which is selfcentering within the rim, and which is positive in its action relative to the engagement of the rim.

With these and such other objects in view as will be apparent from the descrip tion, my invention resides in the novel construction, combination and arrangement of parts hereinafter described and .claimed, and taken in connection with the accompanying drawings, in which Figure 1 is an elevation illustrating the tool as applied to a rim;

Figure 2, a vertical section through the rim and tool as applied;

Figure 3, a detailed elevation of a modified element of the tool; and

Figure 4, a detailed perspective of an element employed.

Figure 1 illustrates the preferred embodiment of my invention as applied to a rim 1 carrying the usual tire 2. In detail, the tool comprises the screw threaded shaft 3 having an eye 4 atom end in which is positioned an operating lever 5. Cross blocks 6 are provided to engage over the shaft 3 at opposite ends thereof, being pro vided with central apertures internally screw-threaded to engage the shaft. These blocks are two in number and the outer ends of the cross arms are bifurcated to receive therein rods 7 and 8, pivoted between the bifurcations by means of pivot pins 9 and 10.

The arms 7 are arranged in pairs extending from opposite sides of the blocks 6, and

are pivoted at their outer ends between the pairs of U-shaped metal castings 11, which castings are held connected by means of the pivot pin 12 of the arms. The castings 11 are of such dimensions as to extend, when applied to a rim, upwardly along the sides of the rim, as best illustrated in Figure 2. The ends of the castings are provided with a series of aligned perforations 18 in which pivot studs 14:, carried by hook members 15, are adapted to be adjustably engaged, whereby the hook members are pivoted in the castings in such manner as to be engaged between the rim and the tire, as illustrated in Figure 2.

Each pair of arms 8 is pivoted at the outer ends of the arms in a similar manner, to. substantially rectangular castings 16 adapted to bear against the inner surface of the rim when the tool is applied. The disposition of the cross blocks, arms and castings is such that when the tool is applied to the rim the shaft 3 will be centrally positioned within the interior of the rim, and upon operation of the lever 5 the blocks 6 may be drawn towards or away from each other to contract or expand the respective pairs of arms 7 and 8. As illustrated in Figure 2, the opposite ends of shaft 3 are reversely threaded for an obvious purpose, but if desired only one end of the shaft may be threaded, namely, the outer end, and the inner block 6 may be held in position on the shaft by means of collars 17 arranged at opposite sides thereof, as illustrated in Figure 3.

In operation, the tool is placed within a rim and the handle 5 turned to draw the blocks 6 toward each other a sufficient distance to bring the castings 16 and 11 into engagement with the interior of the rim, whereupon hooks 15 are engaged over the rim as described, and upon manipulation of the lever 5 in the proper direction the blocks 6 are moved away from each other, contracting the arms 7 and 8 and drawing the rim sections inwardly, as illustrated in Figure 1. In order to expand the rim, it is simply necessary to reverse the direction of movement of the lever 5, in which instance the castings or lugs will expand against the rim and force the same outwardly into its proper engagement.

opposite ends of each adjacent pair of arms termininating in spaced relation, arcuate castings pivotally connecting the free ends of each adjacent pair of arms that are dis posed in alinement, rim engaging hooks ad justably mounted in the ends of said cast ings, and rectangular shaped rim abutting heads pivotally connecting the free ends of the remaining adjacent pairs of arms that are alined.

In testimony whereof I mix my signature.

lVILLIAM HUMPHREY BUTTRAM.

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