Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS275190 A
Publication typeGrant
Publication dateApr 3, 1883
Filing dateJun 13, 1882
Publication numberUS 275190 A, US 275190A, US-A-275190, US275190 A, US275190A
InventorsHeney J. Gilbeet
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sieve for roller-mills
US 275190 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

T R E DD L I G Am G & H m d 0 M o m SIEVE FOR ROLLER MILLS.

. Noi 275,190.

Patented Apr. 3, 1883.

Even Z02? N. PETERS Phow-Liihognphnr, Walhinglon. n c.

UNITED STATES -ATENT OFFICE.

HENRY J. GILBERT AND GEORGE A. GILBERT, OF RACINE, WISCONSIN.

SIEVE FOR ROLLER-MILLS.

SPECIFICATION forming part of Letters Patent No. 275,190, dated April 3, 1883.

Application filed June 13, 1882. (No model.)

To all whom it may concern Be it known that we, HENRY J. GILBERT and GEORGE A. GILBERT, of Racine, in the county of Racine, and in the State of Wisconsin, have invented certain new and useful Improvements in Sieves for Roller-Mills, 850.; and we do hereby declare that the following is a full, clear, and exact description thereof.

Our invention relates to sieves for rollermills, and will be fully described hereinafter.

In the drawings, Figure l is a view in perspective of one form of our sieve, and Fig. 2 is a like view of another form.

A is the frame, to which are secured inclined plates B, of zinc or other smooth substance, and extending from the highest edge of each one of these p ates to the lowest edge of the plate next to it is a strip of gauze, O, and which, when the sieve is in position in the mill, extends up at an angle of about seventy degrees with the horizon. The plates B may be either straight or curved, and the gauze 0 may be slightly concaved, as .shown in the drawings. D

We generally hang our sieves on an incline, their lowest ends being those upon which the cereal falls from the hopper or rollsabove, and we connect their frames with. agitating mechanism, by which the sieves are reciproeated on a slight angle. This motion in one direction causes the grain to ride over the smooth plates B and travel from one to another upward, and then in the opposite direction causes the grain to pound upon the gauzes B, when the smaller particles sift through, leaving the larger particles to travel upward, to be pounded against each of the gauzes successively until it has traveled the entire length of the sieve, completely freed from flour.

-Our sieves are mainly forusein roller-mills, where the grain, after passing between one pair of rollers, is'carried by asieve to another pair, and then over another sieve and through another pair of rolls until it has been entirely reduced.

Our smooth plates B permit the grain to ride up easily from the bottom of one of the gauzes to the top of another, and there is no opportunity for the bran to gain a lodgment in its passage.

While we have described our sieves as par ticularly applicable to roller-mills, it is obvious that they may be used in any position in which sieves may be employed.

What we claim as our invention, and desire to secure by Letters Patent, is-

1. A sieve for roller-mills, consisting of the frame A, inclined metallic plates B, and connecting-gauzes 0, extending from the highest edge of one inclined plate to the lowest edge of the succeeding plate, substantially as set lOI'lZll.

2. The combination, in a sieve, of inclined metallic plates B and connecting-games O, as set forth.

In testimony that we claim the foregoing we have hereunto set our hands, on the 13th day of May and the 18th day of May, 1882, respectively, in the presence of two witnesses.

HENRY J. GILBERT. GEO. A. GILBERT.

Witnesses to signature of B. J. Gilbert:

S. S. STREET, LEWIS J. BOWMAN.

Witnesses to signature of G. A. Gilbert:

CHARLES GLENNEN, M. U. UOOKE.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5551575 *Jul 29, 1994Sep 3, 1996Environmental Procedures, Inc.Shale shaker screens
US5598930 *Jul 20, 1995Feb 4, 1997Advanced Wirecloth, Inc.Shale shaker screen
US5971159 *Jan 21, 1997Oct 26, 1999Tuboscope I/P, Inc.Screen assembly for a vibratory separator
US5988397 *Jul 17, 1997Nov 23, 1999Tuboscope I/P, Inc.Screen for vibratory separator
US6032806 *Mar 25, 1999Mar 7, 2000Tuboscope I/P, Inc.Screen apparatus for vibratory separator
US6152307 *Jan 11, 1999Nov 28, 2000Tuboscope I/P, Inc.Vibratory separator screens
US6267247Jun 4, 1998Jul 31, 2001Tuboscope I/P, Inc.Vibratory separator screen
US6269953Sep 16, 1999Aug 7, 2001Tuboscope I/P, Inc.Vibratory separator screen assemblies
US6283302Apr 6, 2000Sep 4, 2001Tuboscope I/P, Inc.Unibody screen structure
US6290068Apr 22, 1999Sep 18, 2001Tuboscope I/P, Inc.Shaker screens and methods of use
US6302276Apr 15, 2000Oct 16, 2001Tuboscope I/P, Inc.Screen support strip for use in vibratory screening apparatus
US6325216Sep 3, 1999Dec 4, 2001Tuboscope I/P, Inc.Screen apparatus for vibratory separator
US6371302Oct 11, 2000Apr 16, 2002Tuboscope I/P, Inc.Vibratory separator screens
US6401934Oct 30, 1998Jun 11, 2002Tuboscope I/P, Inc.Ramped screen & vibratory separator system
US6443310Jun 17, 2000Sep 3, 2002Varco I/P, Inc.Seal screen structure
US6450345Jun 27, 2000Sep 17, 2002Varco I/P, Inc.Glue pattern screens and methods of production
US6454099Aug 5, 2000Sep 24, 2002Varco I/P, IncVibrator separator screens
US6530483Apr 12, 2001Mar 11, 2003Varco I/P, Inc.Unibody structure for screen assembly
US6565698 *Mar 2, 2000May 20, 2003Varco I/P, Inc.Method for making vibratory separator screens
US6607080Mar 28, 2001Aug 19, 2003Varco I/P, Inc.Screen assembly for vibratory separators
US6629610Oct 25, 2000Oct 7, 2003Tuboscope I/P, Inc.Screen with ramps for vibratory separator system
US6669985Oct 19, 2001Dec 30, 2003Varco I/P, Inc.Methods for making glued shale shaker screens
US6722504Oct 4, 2001Apr 20, 2004Varco I/P, Inc.Vibratory separators and screens
US6736270Oct 19, 2001May 18, 2004Varco I/P, Inc.Vibratory separator; glue is heated moisture-curing hot melt adhesive
US6892888Jul 24, 2002May 17, 2005Varco I/P, Inc.Screen with unibody structure
US6932883Jul 31, 2002Aug 23, 2005Varco I/P, Inc.Screens for vibratory separators
US7520391Jun 6, 2007Apr 21, 2009Varco I/P, Inc.Screen assembly for vibratory separator
Classifications
Cooperative ClassificationB07B1/4672