US156516A - Improvement in sieves - Google Patents
Improvement in sieves Download PDFInfo
- Publication number
- US156516A US156516A US156516DA US156516A US 156516 A US156516 A US 156516A US 156516D A US156516D A US 156516DA US 156516 A US156516 A US 156516A
- Authority
- US
- United States
- Prior art keywords
- cloth
- rim
- sieves
- improvement
- secured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004744 fabric Substances 0.000 description 20
- 239000000463 material Substances 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/48—Stretching devices for screens
Definitions
- This invention relates to fiour-sieves having 'a removable bottom, 'and in which the siftingcloth is secured to its rim by double-folding
- My improvement consists in making the rim to overlap the flat portion of the cloth a little distance beyond the first fold, to protect it against wear along this edge, which is neccssarily much weakened by the strain in bending it.
- the overlap also serves to cover any iinperfections along the edge, in case any of the threads were broken or torn in securing the cloth to the rim.
- Fi gure 1 is aperspective view of my improved sieve, part of the lower left-hand corner being broken away.
- Fig. 2 is a Vertical section of the same.
- Fig. 3 illustrates, on an enlarged scale, the manner in which the Wire-cloth is secured to the supporting-rim.
- the vessel or shell A may be either rectangnlar in form, 'ras shown, or of any other clesired configuration, and made of any suitable material, thoughIprefer to use tin.
- the lower end of the shell terminates in an inwardly turned-up flange,a,between which and the sides of the shell there is a proper space for the reception of the turned-down flange b of the supporting-rim B of the sifting-cloth O.
- the cloth O secured to a turned-down riin B by double-folding the lattcr around it, the rim having a horizontal lap, b', extending over the corner onto the flat portion of the cloth, so as to protect the cloth at the angle, substantially as and for the purpose specified.
Description
-G. A. wLLs.
Sieves. I
N0.156,516. Patented Nov. 3,1874,
o the latter around it.
.UNITED STA'rEs PATEN'I' OFFICE.
v GEORGE A. WELLS, OF OSKALOOSA, IWA.
IMPROVEMENT IN SIEVES.
Specification forming part of Letters Patent No. 156,516, dated November 3, 1874; application filed March 19, 1874.
To all whom it may concern:
Be it known that I, GEORGE A. WELLs, of Oskaloosa, in the county of Mahaska and State of Iowa, have invented a certain 1m'- provement in Flour-Sieves, of which the following is a specification:
This invention relates to fiour-sieves having 'a removable bottom, 'and in which the siftingcloth is secured to its rim by double-folding My improvement consists in making the rim to overlap the flat portion of the cloth a little distance beyond the first fold, to protect it against wear along this edge, which is neccssarily much weakened by the strain in bending it. The overlap also serves to cover any iinperfections along the edge, in case any of the threads were broken or torn in securing the cloth to the rim.
In the annexed drawings, Fi gure 1 is aperspective view of my improved sieve, part of the lower left-hand corner being broken away. Fig. 2 is a Vertical section of the same. Fig. 3 illustrates, on an enlarged scale, the manner in which the Wire-cloth is secured to the supporting-rim.
The same letters of reference are used in all the figures in the designation of identical parts.
The vessel or shell A may be either rectangnlar in form, 'ras shown, or of any other clesired configuration, and made of any suitable material, thoughIprefer to use tin. The lower end of the shell terminates in an inwardly turned-up flange,a,between which and the sides of the shell there is a proper space for the reception of the turned-down flange b of the supporting-rim B of the sifting-cloth O. The
vented. Strong wires D are stretched across the bottom of the shell to stiffen it, as well as i to aft'ord lines of support for the cloth of the sieve. This cloth-may either be ofwire, hair, of any other suitable material. It is secured to the rim B by double-folding the latter on the cloth, in the manner best seen in Fig. 3, which not only forms a very strong connection, but also serves to stifien the rim, which is made of thin tin. The part b' of the rim laps a little dis'tance over the main flat part of the cloth O, and thus protects the first fold. The sieve proper can be readily removed and supplanted by another one, if desired.
VVhatI claim as my invention, and desire to. secure by Letters Patent, is-
The cloth O, secured to a turned-down riin B by double-folding the lattcr around it, the rim having a horizontal lap, b', extending over the corner onto the flat portion of the cloth, so as to protect the cloth at the angle, substantially as and for the purpose specified.
In testimony whereof I have si gned my name to this specification in the presence of two subscribin g witnesses' GEO. A. WELLS.
Witnesses:
J. B. BoLToN, BEN. MoCoY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US156516A true US156516A (en) | 1874-11-03 |
Family
ID=2225926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US156516D Expired - Lifetime US156516A (en) | Improvement in sieves |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US156516A (en) |
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0
- US US156516D patent/US156516A/en not_active Expired - Lifetime
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