US145924A

US145924A - Improvement in sieves

Info

Publication number: US145924A
Authority: US
Publication date: 1873-12-23
Anticipated expiration: 1890-12-23

Description

G. WRIGHT.

Sieves.

'No, 145,924, Q Patented Dec. 23,1873..

74 2272 arses fwczztar. a a. 124W, zwfw UNITED STATES PATENT OFFICE.

GEORGE WRIGHT, OF ST. JOSEPH, MISSOURI.

IMPROVEMENT m suzvzs.

Specification forming part of Letters Patent No. 145,924, dated December 23, 1873; application filed October 4, 1873.

To all whom it may concern:

Be it known that I, GEORGE \VRIGHT, of St. Joseph, in the county of Buchanan and State of Missouri, have invented a new and valuable Improvement in Sieves; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a plan view of my sieves. Figs. 2 and 3 are detail views of the same.

This invention relates to a new and usefulimprovement in hand-sieves for sifting flour and other substances. It consists in forming a deep annular groove in the hoop of the'sieve, and, after inserting the edge of the wire-cloth into this groove, upsetting or lapping the grooved portion of the metal, so as to firmly hold the cloth therein, as will be hereinafter explained.

The following is a description of my iinprovement:

In the annexed drawings, A represents the circular upwardly-flaring hoop of the sieve, and B is the wire-cloth bottom thereof. I first forma deep groove into the hoop A by upsetting the metal, as shown at a, Fig. 2. ,I then insert the edge of the wire-cloth B into this grooved portion, and, by means of t settingdown machine, I press down this portion a with the edge of the wire in it, so as to form a close lap or fold, and firmly retain the wire.

The groove is formed entirely around the hoop by pressing the metal outward, so that the lap or fold a is outside of the hoop, and presents the appearance of a joint, unitin g theupper and lower portions of the hoop. After the edge of the wire is folded into the hoop, as above described, the work is completed by running a little solder into the groove at b.

It will be seen from the above that by my mode of first grooving the hoop, and then pressing down the grooved portion, the sievewire can be secured into the hoop a sufficient distance above its lower edge to form a wide support, 0, for the sieve, composed of the same piece of metal as the hoop itself.

I do not claim, broadly, under this application for Letters Patent, a wire-cloth bottom, B, having its edge inserted into a groove formed in the hoop surrounding it, as this is set forth and claimed by me in my patent dated May 13, 1873, and numbered 139,876.

What I claim as new, and desire to secure by Letters Patent, is-- The grooved and lapped fold a, formed in the hoop A, and holding the edge of the sievecloth B above the lower edge of the hoop, and leaving the broad base-support O, as and for the purposes described.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

GEORGE WRIGHT.

Witnesses:

D. M. FORCE, JNO. W. WADE.