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Publication numberUS1920495 A
Publication typeGrant
Publication dateAug 1, 1933
Filing dateJun 27, 1931
Priority dateJun 27, 1931
Publication numberUS 1920495 A, US 1920495A, US-A-1920495, US1920495 A, US1920495A
InventorsBrown Hugh E, John Boehm
Original AssigneeTyler Co W S
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of making woven wire screen
US 1920495 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

A g. 1, 1933- 'H. E. BROWN ET AL 1,920,495,. I

METHOD OF MAKING WOVEN wm SCREEN Filed June 27, 1931 INVENTOR. Hug/1' 6' Frau/re am ATTORN a:

Patented Aug. 1, 1933 UNITED STATES METHOD OF MAKING WOVEN wmn SCREEN' Hugh E. Brown, Cleveland Heights, and John Boehm, University Heights, Ohio, assignors to The W. S. Tyler Company, Cleveland, Ohio, a

Corporation of Ohio Application June 27, 1931. Serial No. 547,356

7 Claims.

The present invention, relating as indicated to a method of making the same, is particularly directed to a new and improved screen designed to have an increased tensile strength, a greater re-.

sistance to abrasion and substantially greater accuracy in action than screens heretofore manufactured. The principal object of the invention is the provision of a simple and economical method of manufacturing a new screen having the characteristics referred to above.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means and steps hereinafter fully described and particularly pointed out in the claims; the

5 annexed drawing and the following description setting forth in detail certain means and one mode of carrying out the invention, such. disclosed means and mode illustrating, however, but one of various ways in which the principle of the 0. invention may be used. I

In said annexed drawingz- Fig. 1 is a plan view of one form of our improved screen; Fig. 2 is an end elevation of the same looking atthe screen of Fig. 1 from the 5 right side; Fig. 3 is a side elevation of the same; Fig. 3a is a view similar to Fig. 3 showing an alterative form of the warp wires; Fig. 4 is a side elevation showing a bundle of precrimped wires ready for heat treatment.

Our improved screen consists of a series of wires 1 extending lengthwise of the screen and a second series of wires 2 extending transversely of the wires 1 and interwoven therewith. In the manufacture of screens it has been customary in the past to employ harder wires for the lengthwise or warp wires than those employed as crosswise wires. This was necessary because of the greater crimping or bending necessarily given to.

the crosswise wires in the weaving of the screen, which necessitated the use of a soft pliable wire at this point, while the lengthwise wires, particularly in screens of oblong mesh were bent less sharply, and hence could be made of 'harder material. The advantage of employing a harder wirefor one series was not, however, very great as the life of the screen was determined by the softest wire employed.

To obviate the difliculties referred to above and to make a screen having a materially longer life, and one capable of more accurate separation of the material, we employ soft wire for both the lengthwise and transverse wires. The wire employed should be of the proper physical charac-- 1 teristics and chemical analysis to. permit it to 5 be readily crimped, and yet to respond to heat long in shape, nevertheless, the principles comtreatment for the purpose of toughening andhardening the wires after crimping. After selection of a suitable wire for the lengthwise series the wire is crimped by anysuitable means to provide the bends or knuckles 3 (see Fig. 3), after which it is cut into suitable lengths for the piece of screen to be' woven, and the lengths are assembled into a bundle 4 (see Fig. 4) and heat treated to harden and toughen the wire and to set the wire in the precrimped condition.

The same procedure is then followed in preparing the transverse wires 2. A suitable wire is selected, is subjected to a crimping operation to produce the knuckles or bends 5, the wire is then cut into suitable lengths, assembled and heat treated to toughen and temper the wire and-set the wire in the precrimped condition.

The preliminarily formed or precrimped wires are then woven in the usual manner and produce a screen of relatively uniform hardness, toughness'and resistance to wear, and one in which the meshes are maintained throughout the life of the screen, giving an extremely accurate screening action on the material.

As illustrated in Fig. 3 the warp wires in cer tain types of screens need not necessarily be crimped as illustrated in Fig. 3a but with the weft wires pre-crimped in the manner above described, the warp wires of suitably hard and durable material may be interwoven with the precrimped weft wires to produce a screen having the above enumerated characteristics.

It will be noted that while in the form ofscreen construction illustrated'in Fig. 1, the mesh is ob- 90 prising our invention may be applied to the construction and manufacture of a screen of square mesh. In fact, the particular size or shape of the mesh, since the same forms no part of this invention, has no particular bearing on the fundamental principles of the method comprising our invention.

As stated in the foregoing description and as illustrated in Fig. 4, one method which may be employed for the purpose of treating warp and/or weft wires before fabrication consists in precrimping suitable lengths of such wire and then tying the same in bundles and placing them in a suitable furnace for heat treating. Nevertheless, there are numerous other methods which may be employed for heat treating the wire before weaving and it is within the contemplation of our invention to carry on either or both of the precrimping and treating steps as a continuous operation. This treatment in a continuous manner of the wires without cutting the same into suitable -lengths as is illustrated in Fig. 4 may be accomplished by passing the same through a suitable furnace or the like in order-to effect the proper treatment of the wire.

Our improved screen not only possesses longer life than those heretofore employed, but is also materially more accurate in separation.

Other forms may be employed instead of the one here explained embodying the features of our invention, change being made in the form or construction, provided the elementsstated by any of the following claims or the equivalent of such stated elements be employed, whether produced by our preferred method or by others embodying steps equivalent to those stated in the folowing claims. I

We therefore particularly point out and distinctly claim as our invention:-

1. In a method of making a woven wire screen, the steps which consist in pre-crimping a series of warp wires, subjecting the same to heat treatment and then weaving the same with a series of weft wires into a screen.

2. In a method of making a woven wire screen,

the steps which consist in pre-crimping a series" of weft wires, subjecting the same to heat treatment and then weaving the same with a series of warp wires into a screen.

3. In a method of making a woven wire screen, the steps which consist in pre-crimping a series of weft wires, subjecting the same to heat treatment, and then weaving the same into a screen.

4. In a method of making a woven wire screen, the steps which consist in pre-crimping a series of weft wires, subjecting the same to heat treatment to fix and harden the said wires in such crimped condition, and then weaving the same into a screen.

5. In a method of making woven wire screen, the steps which consist in pre-crimping a series of weft wires, heat treating the warp and weft wires, and then weaving the same into a screen.

6. In a method of making woven wire screen, the steps which consists in pre-crimping a series of warp and weft wires, heat treating the same, and then weaving the same into a screen.

7. In a method of making woven wire screen, the steps which consist in pre-crimping a series of wires, subjecting such wires to a heat treatment as the same are moved continuously through a furnace, and then weaving such wires with a set arranged transversely thereto to form a screen.

HUGH E. BROWN. JOHN BOEHM.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2922442 *Nov 4, 1958Jan 26, 1960New York Wire Cloth CompanyWoven screen cloth
US3050279 *Jul 11, 1958Aug 21, 1962Reed Res IncHeat insulating screen
US3100616 *May 12, 1959Aug 13, 1963Colorado Fuel & Iron CorpWire cloth
US3139119 *May 18, 1960Jun 30, 1964William E BuchananFourdrinier fabric
US3159530 *Jun 23, 1960Dec 1, 1964Kimberly Clark CoPapermaking machine
US3211606 *Nov 25, 1960Oct 12, 1965Wisconsin Wire WorksPaper making wire
US5061275 *Dec 29, 1989Oct 29, 1991Medinvent S.A.Self-expanding prosthesis
US5628788 *Nov 7, 1995May 13, 1997Corvita CorporationSelf-expanding endoluminal stent-graft
US5700269 *Nov 13, 1995Dec 23, 1997Corvita CorporationEndoluminal prosthesis deployment device for use with prostheses of variable length and having retraction ability
US5741333 *Apr 3, 1996Apr 21, 1998Corvita CorporationSelf-expanding stent for a medical device to be introduced into a cavity of a body
US5849037 *Apr 3, 1996Dec 15, 1998Corvita CorporationSelf-expanding stent for a medical device to be introduced into a cavity of a body, and method for its preparation
US5968091 *Nov 26, 1997Oct 19, 1999Corvita Corp.Stents and stent grafts having enhanced hoop strength and methods of making the same
US6237460Apr 30, 1998May 29, 2001Corvita CorporationMethod for preparation of a self-expanding stent for a medical device to be introduced into a cavity of a body
US20030149472 *Mar 7, 2003Aug 7, 2003Leonard PinchukModular endluminal stent-grafts and methods for their use
CN103317067A *Mar 22, 2012Sep 25, 2013上海锦荣矿山机械有限公司Manufacturing method for steel wire braiding screen mesh
CN103317067B *Mar 22, 2012May 4, 2016上海锦荣矿山机械有限公司一种钢丝编织筛网的制造方法
Classifications
U.S. Classification140/7, D05/54, 245/8, 209/401, 139/425.00R
International ClassificationB21F27/02, B21F27/00
Cooperative ClassificationB21F27/02
European ClassificationB21F27/02