US1026773A - Furniture-caster. - Google Patents

Description

.A. E.'SCHATZ.' FURNITURE cAs'rBlk vARP-LIOATIQII vFILED SEPT.. 11, 1911.

' 1,026,773.' Patented may 21, 1912.

Y karllfw'hon concern:

Be. itlknown that I, ADAM E. SGHATZ, a

tcitizen` `of 'the ,United States, residing at `Mount,.Vernon,.in the countyof lVestclies ter and `State of New York,l have invented certain,new and `useful ,Improvement-s in Furniture-Casters, of which the following is alspecification.A l l Mv invention relates to improvements in slidingicasters orshoes for chairs and furniture and' other utensils and is intended to displace the' roller casters heretofore largel)7 used, and is an'important improvement on the inventions for which I have heretofore tiled applications for Letters Patent, in vwhich a caster is shown having a continuous rounded surface and the legs depending from the periphery., I find in practice, that the slidingv 'caster providedv with legs or -prongs dependingfromthe pe-4 riphery must. be much slnallerin diameter than the chair leg or thatl section of a piece' of furniture to which they are to be ap.-

plied. Inthe case of chaiixlegs, there y must bean allowance of from an eighth to a quarter of an inch ofwood,' otherwise the edges of the leg of a chair. will be forced or split off, bythe leg being forced into the vwood, sincein man)7 'cases the vgrain of the wood runs in' diagonal lines. I findv that in'man'v chairs the front. or rear legs come forward or backward, and that such curved lines run across the grains. In many 'cases the front legs .at -thel bottom are tapered, and thus provide but a .small surface to* attach a -sliding caster provided with the prongs in the periphery. The' 'use of the dome-shaped casters has proven, that they providebut a small contact surface, which'leaves 'a niark on a hardwood o'or5 and is. soon worn fiat,

where it is used on marble .or tiled floors.-

selves in the wood and-.leave prints and de-v pressed'streaks on'the iioori'ng, becausel the bearing surface is too small; I n practice I findthat these .serious objections `are all overcome'by the use ofcasters of the' form shown in the drawing by reason of the fact that acaster of much greater diameter can be used, and the surfaceof the .curved or -raised ringis muchgreater than' can be obtained by the use of the' dome shaped caster, since the legs of the casters here shown are stamped from the center o f the FURNITURE-CASTER- i ADAM E'.'scHATz, 0E MOUNT VERNON, NEW YORK Patented May-21, 1912.

Application led September 11, lll. Serial No. 648,633.

materiali.. and thus have vmuch more material to' hold to and cannot split the wood.

I do not coniine myself to the circular form shown lin the drawing, since a trian-` gular or oblong or square shape. mayv be used. without departing from the spirit of my invention. the essential Yfeature of which in which the prongs are of a modified form.

Fig. 4, is a cross-section of the tvpe of shoe shown in 3'. showing a different form of prong from those shown `in Figs. 1 and 2. Fig. 5, is a top orplan viewof a shoe in which the inner periphervis provided withsmall projecting spurs or' prongs of a modilied'form. Fig. G, .isa topor `plan view showing another .spurv or prong and Fig. v7.l illustrates' a modified yform of caster bodv provided with .a depressed central por-4 tion, showing in full'linesthe portion cut out to form the fastening spurs or prongs. fIt-villbe noted that I' have shown ,the legs in different shapes. .In Figs. l and Q, /the legs a. are provided with aspear hea-d. and may be provided with a barb onf either or both sides, so thatl when the leg isdriven into the wood the 'spurs-will embed themselves in the wood and prevent the caster c from dropping ofliasmav be the case, with casters having the form of prongs as shown in Fig.' 3. In Fig. 5. the' prongs al are spear. shaped. In fact an)Y shaped barb having irregular shaped sides maiv be lprovided, the objectl being to provide means bvivhich when embedded in the wood thc fibersl of the wood'displaccd or separated b v the point will 'fall back into line as ncaras possible and clutch the leg more tightly.

than itcan when it is simply wedged apart as in the V-shaped leg. the tendency inthe latter case-being to force the wedge out b v reason of changes in thewood by atmospheric conditions, or when thewood gets 105 wet.. Sliding chair casters wherethe legsare `V-shaped are now being discarded by manvmanufacturers and users for the reason that they are apt to drop out of the leg.

vAnother great objection to the vuse of nickel tanees on the periphery ffiattened by pressure or hammering. I find that for this purpose aluminum is well suit- 'ed'tor my purpose, since it has the hardness and strength ot' nickel steel,l and will polish as well. I find that two prongs are the best form because they' can be given greater 4length than where more legs. are employed..

In the drawings, Figs. 2 and 4; illustrate thecurvatiire of the shoe between its inner and its outer periphery. In the drawings in Figs; l` and 3, Ivhaye shown Vlegs or prongs depending from `the inner periphery and in `Figs. 5 and G dill'er'- ent yforms of legs. lt is to be remembered that in stamping out the disks the legs vshould be opposite each' other at equal disso that when the legs are pressed downward by the dies they will be in a perpendicular position, and are thus more easily driven into the wood, while Figs. 6 and i the legswill ,depend atan direction,

angle, which, however, does notv prevent them from being 'driven into the wood, and Will tendl to hold the easter on tightly by reason of each legdepending in an opposite' thus tending to securely fasten the'V easter.

Having described .my invent-ion what I fclaiin as new and desire tosecure by Letters- Pate'nt is l. A metallie vslidingaster having an annular raised surface between. the inner and outer periphery and provided'on the inner periphery with two or more depending legs,

constructed of stili metal, 'substantially' as legs, depending therefrom, substantially as described.

l e ADAM seHA'rz. ln presence (1f- E. W.l GABY,

' ALBERT Pornms.

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