US312733A - Caster - Google Patents

Description

(No Model.)

W. KOGH.

CASTER.

. Patented Feb. 24, 1885.

FIG-.2-

ilnirnn STATES PATENT @rrrcn.

\VILLIAM KOCH, OF LA'WRENGEBURG, INDIANA.

CASTER.

SPECIFICATION forming part of Letters Patent No. 312,733, dated February 2 1, 1885.

Application filed November 24, 1884. (X0 model.)

T0 at whom it may concern.-

Be it known that 1, WILLIAM KOCH, a citizen of the United States, residing at Lawrenceburg, in the county of Dearborn and State of Indiana, have invented certain new and useful Improvements in Furniture Casters, of which the following is a specification, reference being had therein to the accompanying drawings.

The object of this invention is to improve the peculiar construction of furniture-caster seen in Letters Patent No. 300,782, granted to me June 24, 1884, in which patent the yielding tire or rim is represented as being provided with ribs or flanges that engage with 1011- gitudinal slots of the wheel or roller, and thus prevent circumferential shifting of said tire; but practical experience has demonstrated that the device can be manufactured more rapidly and its appearance enhanced by omitting said ribs and slots and employing other methods of preventing this circumferential movement of the rim. I accordingly make use of the circumferentially-grooved roller seen in said patent, and provide said roller with a series of inter nal countersinks, pits, recesses, or pockets, or equivalent retaining devices, which are so arranged as to anchor the rim in place and yet be completely concealed from sight, as hereinafter more fully described, and pointed outin the claim.

' In the annexed drawings, Figure 1 is an axial section of the preferred form of my improved caster, wheel, or roller. Fig. 2 is a transverse section thereof. Fig. 3 is an axial section showing the elastic tire or rim applied to said wheel. Fig. 4. is an axial section of another form of the wheel. Fig. 5 is a transverse section of the same. Fig. 6 is a front elevation of another modification of the wheel. Fig. 7 is a transverse section of the same.

As seen in Fig. 1, the roller, wheel, or caster A is essentially the same as represented in the patent previously referred to, said wheel being made of any desired size and material, and being grooved circumferentially at B, and provided with an axialbore, C, which latter is adapted to receive the pin wherewith said wheel is journaled in a customary frame. This groove may be of any appropriate size and shape, and is provided on its opposite faces I ter seen in my old patent.

with a series of countersinks, pits, recesses, or pockets, D, of any form that will best answer the purpose for which they are designed. Furthermore, a greater or less number of these pits may be employed, according to the size of the caster or the special use to which it is to be put.

E represents the elastic rim, tire, or band, which is preferablymade of vulcanized india- 6o rubber, and has an inwardly-projecting tongue,

F, adapted to fit snugly within the circumferential groove B, as seen in Fig. 3. Projecting outwardly from the opposite sides of this tongue are teats, lugs, or other suitable pro- 6 tuberances, G, that engage with the pits or pockets D, and thereby prevent the elastic tire or rim E shifting around the periphery of roller A,while the groove B and tongue F secure said tire against lateral movement.

The above is a description of a cheap, simple, and effective construction of the caster; but the invention may be modified, as seenin Fig. 4, where the circumferential groove B is wider at top than at bottom, and is provided on its opposite faces witha series of V-shaped coves, H, into which coves the tire is adapted to anchor. Furthermore, the bottom of this groove is made square, as seen in Fig. 5, so as to afford avery secure hold on the rubber tire.

Another modification of my invention is seen in Fig. 6, where the sides of the groove B are armed with a series of short pins or spurs, I. These pins or spurs may project alternately from the opposite sides of said groove, or they may extend completely across the same, as indicated at l. The portion of metal at the bottom of this groove is cruciform in transverse section. as seenin Fig. 7. From this description it is evident that either of the devices D, H, I, or 1 will serve equally well to prevent the flexible rim or tire shift-ing around the periphery of the, wheel,and,as all of these devices are concealed when said rim is fitted in its proper place, the caster presents aneater and 5 more finished appearance than does the eas- In some cases the rim or tire may be a separate member capable of ,bein g sprung into the circumferential groove B; but when the construction seen in Fig. 6 is/ adopted, said tire must be cast around the wheel or roller. Finally, the sides of the wheel may be convex or bulging, as seen in Fig. 4, so as to facilitate polishing the same in case it should be nickled or otherwise plated.

I claim as my invention 5 In a furniture-easter, the wheel or roller A,

having a circumferential groove, B, and a series of concealed retaining devices, D, or their described equivalents located therein, in combination with the elastic tire or riin E, the lat- 10 ter being provided with an inwardly-projecting tongue, F, that enters said groove and engages with said retaining devices, in the manner herein described, and for the purpose explained.

In testimony whereof I affix my signature in I5 presence of two witnesses.

\VILLIAM KOCH.

, Witnesses:

FRANK Mason,

CHARLES F. Ross.

Images