US174388A

US174388A - Improvement in sheet-metal rings

Info

Publication number: US174388A
Authority: US
Publication date: 1876-03-07
Anticipated expiration: 1893-03-07

Description

UNITED S S ALVIN TAPLIN, or FORESTVILLE, Assie'non TO THE BRISTOL PATENT F I CLOCK COMPANY, OF BRISTOL, CONNECTlCUT.

IMPROVEMENT IN SHEET-METAL RINGS.

' Specification forming part of Letters Patent N 0. 174,388, dated March 7, 1876; application filed February 16, 1876.

To all whom it may concern:

Be it known that I, ALVIN TAPLIN, of Forestville, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in the Manufacture of Metallic Rings applicable for lamp-shade hold- 'ers and other purposes; and I. do hereby declare that the following is a full, clear, and

exact description of the same, reference being had to the accompanying drawing, which forms part of this specification.

This invention is more particularly designed to be applied to the manufacture of rings for lamp-shade holders, and has for its objects not only the avoidance of that waste which is incidental to making such and other similar rings by cutting out an annular blank from sheet metal and afterward turning up such rings by drawing or stamping in dies, but also the more easy and perfect shaping and completion of the rings from strips cut out of sheet metal to'avoid waste, and whereby the whole of the metal is utilized.

, pendicular or in transverse'relation thereto,

by passing said strip between. tapering rolls arranged to give it a flat, circular, or helical configuration, and afterward subjecting the flat ring thus produced to pressure in a" die or dies of the desired form.

Figure 1 is a vertical section of a lampshade holder having a shade-supporting ring constructed in accordance with my invention. Fig.2 represents the strip as cut from the sheet. Fig. 3 is a view in perspective of a pair of taper rolls, with the strip as passing in between them to give it a circular or helical form. Fig. .4. represents'a face view of the rolled strip, or of a cut portion of said strip, with its ends brought together to form a fiat ring; and Fig. 5, a sectionalview, upon a larger scale, of the pressed ring as it comes from the dies. y

A is the shade-supporting ring of a lampshade holder; and B, the collar of the latter, united with the ring by arms C. To make the ring A, a strip, D, Fig. 2, is first cut from the metal sheet, or said strip may be separately rolled of any desired length to make a number of rings by cutting it transversely after said strip has been rolled into circular H said strip will be delivered from the latter in a flat, circular,.or scrolltform, and may, if too long-fora single ring, be afterward cut into suitable lengths to form a series of rings.

.The rolled strip or strip section then has its ends brought together to form a flat ring, G, Fig. 4, the edges of which are parallel'with its axis instead of being transverse thereto, as in the case of a hoop. Such a ring, G, is much more easily afterward pressed into the form of the hollow shade-supporting ring A, Figs. 1 and 5, than a hoop could well be, inasmuch as said ring may be placed face downward in a female die, and an upper die be brought down upon it to give it the profile shown in Fig. 5, or,'in other words, to form it with a shade-supporting flange, b, a lower and inner stifiening-rim, c, a conicalreceptacle, d, for the shade, and an outer upper stiffeningflange, e. Such pressed ring, too, may be made in a close die and be readily delivered therefrom. 1

Of course the profile of the'ring may be changed according to the lamp or purpose for which the ring is required, but, in any case,

BRASS AND ties-as.rqgards itsproduction willheafiordedg giveit'the form of :a flat ririg, and afterward .byjtheJhereinbeforeflesctibedmode of maliiqg; press'in'gfisaifl ringlin adie ".or'ldies to give it .the ring.

( i .themeqliirdsectional1prdfi1e,*substantiallyas ALVIN TAPLIN.

I clai'mspecified.

The hereinbefore-described mode "of form- 1 ing rings; for supporting lamp-shades and Witnesses: nther purposesflfrom a, strip 0'f sheet-metayi DAMJAJMILEER, by rolling said strip :between i-taperrollsxto; "GEOKW. BRGWN.