US1396134A - Demountable rim - Google Patents

Description

w. s. MARTIN.

DEMOUNTABLE RIM.

APPLICATION FILED MAR. 30, 1921.

1 ,396, 1 34;. Patented Nov. 8, 1921.

UNITED STATES PATENT OFFICE.

DEMOUNTABLE RIM.

Application filed March 30, 1921.

To all ham a mag concern:

Be it known that I, WVALTER SooTT MAR- TIN, a citizen of the United States, residing at Flint, in the county of Genesee and State of Michigan, have invented certain new and useful Improvements in Demountable Rims,

of which the followingis a specification, reference being had to the accompanying drawings.

It is the purpose of the present invention to provide a structure of felly made up of any suitable material either aluminium, iron, or steel, preferably the latter and including an expansible spring steel ring, and means for expanding the same, for holding a tire carrying rim demountably thereon, said means for expanding the ring being operable, to expand the ring, or to permit the ring to contract, in holding the rim demountably on the felly, and to permit the rim to be removed.

7 While the design and construction at present illustrated and set forth is deemed preferable, it is obvious that as a result of a reduction of the invention to a more practical form for commercial purposes, the invention may be susceptible of changes, and the right to these changes is claimed, provided they are comprehended within the scope of what is claimed.

The invention comprises further features and combination of parts, as will be hereinafter set forth, shown in the drawings and claimed.

In the drawings Figure 1 is a view in elevation of a wheel felly showing a demountable rim including a tire thereon, as applied thereto.

Fig. 2 is a cross sectional view on line 22 of Fig. 1, showing the rim as being held on the felly by meansof the expansible ring, and an annular shoulder which is carried by the rim.

Fig. 3 is a detail sectional plan view on line 33 of Fig. 2, showing the type of wedge or means for expanding the ring.

Fig. & is a detail perspective view of the wedge 8.

Fig. 5 is a detail expansible ring.

Fig. 6 is a detail sectional view of the felly and the demountable rim, showing a modified means for expanding the ring.

Fig. 7 is a sectional view on line 77 of Fig. 6.

perspective view of the Specification of Letters Patent.

wed

Patented Nov. 8, 1921. Serial No. 456,945.

Fig. 8 is a detail wedge or expanding opening 18.

Fig. 9 is a detail sectional view of a felly particularly for a wire wheel, showing another modified form of wedge for expanding the expansible ring.

ig. 10 is a detail perspective view of the wedge of Fig. 9.

Referring to the drawings, 1 the felly, which may be constructed of any suitable material either wood, aluminium, iron or steel preferably the latter. This felly is of channel or U-shaped form in cross-section, one side or flange 2 of which is of greater depth than the opposite side or flange 3. The flange or side of greater depth is deflected or bent laterally from the felly, and is engaged by one side of the demountable rim 5. This rim 5 has the usual clencher flanges, to engage and support the usual form of tire 6.

The flange or side of less depth of the felly receives bolts 7, which pass through the ges or ring expanding members 8. These ring expanding members or wedges rest upon the bottom of the U-shaped or channel felly, as indicated at 9, so as to prevent turning of the members or wedges. These members or wedges have inclined or curved faces 10, which cam against the rounded corner 11 of the expansible and contractible ring 12. This expansible ring has split ends 13, which are recessed and overlapped. The ring is disposed against the perspective view of the member 18, showing its designates flange or side of less depth of the felly.

Referring to Fig. 2 it will be seen that the heads 14 of the bolts are exposed on the interior of the channel of the. felly, while the nuts 16 are adjacent the exterior face of the flange 3, therefore upon tightening up of the nuts 16, drawing the bolts 7 in a lateral direction, the inclined or rounded or curved faces 10 of the wedges will contact with the rounded edge or corner of the ring 12, and

- cause the ring to expand against the rim 5,

so as to cooperate with the annular shoulder 17, to prevent lateral displacement of the rim.

In Fig. 6 the bolt passes through the flange of less depth, in fact through the flange 3, and mounted on the bolt adjacent the flange 3 is a modified wedge or device for expanding the ring. This wedge or device 18 is substantially rectangular with its corners slightly rounded, and its opening 18 is also angular, to fit the shank of the bolt which is correspondingly shaped, so that the wedge or expanding device may rotate with the bolt, to expand the ring. Though the shank of the bolt is angular or greater in bolts adjacent the outer surface of the flange 3 may be rotated, which will in turn rotate the wedges 18 and expand the ring. When the expanding members or wedges are rotated, their greater length becomes disposed radially and causes the ring to be forced radially against the rim holding the same in position. The rim has an annular shoulder 17 which is disposed inwardly of th ring, therefore when the ring is expanded, it is obvious that the ring will be of a diameter greater than the diameter of the annular shoulder of the ring, thereby preventing the rim from being removed. When the bolts are loosened by imparting a quarter turn to them, the wedges or expanding members 18 become disposed, so that their width becomes disposed radially, the ring will contract sufficiently out of contact with the rim, to permit the shoulder 17 to easily pass over the expansible ring and the flange 8, thereby allowing th rim to be removed.

In Fig. 8 another form of wedge 19 is employed especially. in connection with wire wheels, and is mounted upon the bottom of the channel of the felly instead of adjacent the side flange. Obviously by adjusting the bolt 21 (the shank 20 of which is angular in cross section where it engages through the wedge 19), the inclined beveled face or cam 22 will engage under the rounded edge of the ring, and raise the ringto expand against the rim.

In order to insure holding the ring 12 in place, particularly in Figs. 6 and 7 angle plates 12, as shown in Fig. 7 may be riveted as at 12 to the flange of the rim. These angle plates 12 prevent lateral movement of the ring. 7

Ihe invention having been set forth, what is claimed as being useful is 1. In a device for the purpose indicated, a felly of substantially U-form in cross section and provided with a rim retaining abutment flange, an expansible ring engaged with the inner face of the opposite radial flange of the felly and adapted to outwardly in contact with the rim, wedges mounted upon the interior cylindrical wall of the U-form felly and having means to cam against the expansible ring, for expanding the same radially, a rim telescoped over the felly, and against which the ring expands and frictionally engages, thereby frictionally retaining the rim on the felly.

2. In a device for the purpose indicated, a felly ofsubstantially' U-form in cross section and provided with a rim retaining abutment flange, an expansible ring engaged with the inner face of the opposite radial flangeof the felly and adapted to be forced radially outwardly in contact with the rim, wedges mounted upon the interior cylindrical wall of the U-form felly and having means to cam against the expansible ring, for expanding the same radially, a rim telescoped over the felly, and against which the ring expands and frictionally engages, thereby frictionally retaining the rim on the folly, said rim having an annularly disposed shoulder with which the expansible ring engages, thereby insuring holding the rim on the felly.

In testimony whereof I hereunto affix my signature.

WALTERSCOTT MARTIN.

be forced radially

Images