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Publication numberUS516673 A
Publication typeGrant
Publication dateMar 20, 1894
Filing dateJun 25, 1892
Publication numberUS 516673 A, US 516673A, US-A-516673, US516673 A, US516673A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sieve
US 516673 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)

J. N. WILSON.

SIEVB.

No. 516,673. Patented 'Mar. 20-, 1894.

UNITED STATES PATENT OFFICE.

JAMES N. WILSON, OF MINNEAPOLIS, MINNESOTA.

SIEVE.

SPECIFICATION forming part of Letters Patent No. 516,673, dated March 20, 1894.

To all whom it'may concern.-

. Be it known that 1, JAMES N. WILSON, a citizen of the United States, residing at Minneapolis, in the county of Hen-nepin and State of Minnesota, have. invented certain new and useful Improvements in Sieves; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to sieves for use on grain-separators; and has for its object to provide a construction whereby the size of the mesh or grain passages through the sieve may be changed at will, for adapting the sieve to the different kinds of grain, without removing the sieve and while the machine is in motion, if so desired.

The invention was especially designed fo use on thrashing machines, Where it is desirable to keep the machine in constant action. It is of course capable of use on all kinds of grain-separators and may be also applied on separators designed to separate other kinds of stock.

The invention is illustrated in the accompanying drawings, wherein,'like letters referring to like parts throughout- Figure 1 is a vertical cross section taken from right to left through the central portion of Fig. 2. Fig. 2 is a plan view of the riddle-box containing one of my improved riddles or sieves. Fig. 3 is a view, in sectional elevation, showing the left side portion of Fig. 1 broken away; but enlarged to more clearly show the detail construction of the manual adjusting device for the sieves. Figs. 4, 5, 6 and 7 are views in plan, with some parts broken away, and on an enlarged scale as compared with Figs. 1 and 2, for showing the adjustments of the sieve bearing surfaces, and the three difierent sizes of mesh or grain passage obtainable thereby.

A represents a riddle or sieve-box. B represents the upper member, and B the lower member of the mesh bearing-surfaces, which together constitute my variable mesh sieve. The mesh bearing surfaces are composed of wire interwoven to form rectangular meshes. Both surfaces have meshes of exactly the same size. To insure this result and coinci- Application filed June 25, 1892. v Renewed January 23,1894- Serial No. 497,916. (No modeL deuce in the spacing of the wires, both of the mesh bearing surfaces should be woven or formed on the same templet. The upper member B, when in the frame or riddle-box A, is secured against'movement therein in any suitable way. The lower member B is movable in two directions. For effecting this movement, a shaft 0 is mounted in suitable bearings on the riddle-box and is connected to the frame of the mesh bearing surface B, by a crank-arm O. This shaft is mounted to slide and to rock in its bearings. One end of the shaft is extended outward beyond the riddle-box, and is provided with ahand-lever 0 for operating the same. When the largest size mesh a is desired, the parts will be in the position shown in Figs. 1 and 2, and on a larger scale in the full lines of Figs. 4 and 5. In this position of the parts, the wires of the mesh bearing surfaces B and B will coincide or lie one directly over the other in the vertical plane. This will give the proper size mesh for oats. By sliding the shaft 0 outward into the position shown in full lines in Fig. 6, the oblong mesh or will be formed, which is the proper sized mesh for barley and rye. By then rocking the shaft 0, the parts will take'the position shown in dotted lines in Fig. 4, and in full lines in Fig. 7, and will give the rectangular mesh a which is the proper sized mesh for wheat. In other words, by sliding the lower member of the sieve outward, the largest sized mesh is divided and by then moving the lower member sidewise, the original or largest sized mesh will be quartered. A stop 0 may be provided on the frame A, with which the lever C may be made to engagein its outermost position, for holding the lower member wherever it is set. The friction between the hand-lever O and the end of the stop 0 will prevent the shaft from rocking downward by gravity, when the parts are in the position shown in Fig. 6 5 and the gravity of the shaft and its hand-lever and crank will hold it in the position shown in dotted lines in Fig. 4. When the parts are in the position shown in Figs. 1, 2, and 5, the hand-lever O rests ontop of the stop C The great advantage of this form of sieve is that the meshes may be changed in size without removing the sieve or without stopping the machine, if so desired.

The mesh bearing surfaces are shown as composed of wire; but of course it will be understood that the same might be equally well made, by stamping out the same from a sheet metal body. In other words, the principle applies equally well to wire-sieves and to sheetmetal sieves.

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

The combination with the compound sieve, consisting of the upper mesh bearing surface 13, and the lower mesh bearing surface B in contact with each other, of the shaft 0 mount-

Referenced by
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US2714961 *Sep 10, 1949Aug 9, 1955MeinzerScreening mechanism
US4033865 *Feb 23, 1976Jul 5, 1977Derrick Manufacturing CorporationNon-clogging screen apparatus
US5385669 *Apr 30, 1993Jan 31, 1995Environmental Procedures, Inc.Mining screen device and grid structure therefor
US5392925 *Aug 12, 1993Feb 28, 1995Environmental Procedures, Inc.Shale shaker and screen
US5490598 *Mar 30, 1994Feb 13, 1996Drexel Oilfield Services, Inc.Screen for vibrating separator
US5944197 *Apr 24, 1997Aug 31, 1999Southwestern Wire Cloth, Inc.Rectangular opening woven screen mesh for filtering solid particles
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
US6029824 *Apr 22, 1998Feb 29, 2000Tuboscope I/P, Inc.Screen for vibrating 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
US6179128Oct 2, 1998Jan 30, 2001Tuboscope I/P, Inc.Tension clamp and screen system
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
US6439391Oct 18, 2000Aug 27, 2002Tubo Scope I/P, Inc.Vibratory separator with material heater
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
US6565698Mar 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 ClassificationB07B1/48