US372335A - Seam for wire-cloth - Google Patents

Description

(No ModeL) J. SELLERS.

SEAM FOR WIRE CLOTH.

N0. 372, 335'.- Patented NoY. 1, 1.887.

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4 i R Q g gw UNITED STATES PATENT OFFICE.

JOSEPH J. SELLERS, OF PHILADELPHIA, PENNSYLVANIA.-

SEA M FOR WIRE-CLOTH.

SPECIFICATION forming part of Letters Patent No. 372,335, dated November 1, 1887.

Application filed August 4, 1886.

.To all whom it may concern:

Be it known that I, JosEPH J. SELLERs, a citizen of the United States, and a resident of the city and county of Philadelphia and State of Pennsylvania, have invented an Improved Seam for Wire-Cloth, of which the" following joined, and then is a specification.

My invention relates to seams for wire-cloth, and more especially to seams for the cloth used in dandy-rolls, cylinders,'or fourdriniers in paper-machines; and its object is to securely join the adjacent edges of the cloth and at the same time make a seam which shall have no wires projecting above the surface on one side of the fabric.

Heretofore in uniting the adjacent edges of wire-cloth it has been common practice to whip the edges of the cloth over and over and then to connect the whipping-wires by another wire running through the loops of the whippingwires. These whipping-wires necessarily lie upon and project beyond the surface of the cloth on both sides, and when used in uniting the seams of the woven-wire parts of papermachines, they cause marks upon the paper, which are objectionable. To overcome this difficulty it has been proposed to form a series of loops in the binding-thread by looping it around some of the meshes of the parts to be joining the loops by passing a wire through them. In this way some of the objections to the old way of uniting this wire were overcome; but. as the loops were made some distance from the adjacent edges of the cloth, these edges were liable to become loose and to bend or stick up, thereby making an uneven seam, producing heavy marks on the paper, and as the edges became worn or frayed the seam was weakened or destroyed.

Myinvention consists in the manner of making seams in wire-cloth, substantially as here inafter set forth, whereby the edges are evenly and securely united without any liability of becoming bent or frayed, thereby producing an improved wire-cloth which may be used for dandy-rolls, cylinders, fourdriniers, and the like.

In the accompanying drawing I have illustrated,on an enlarged scale, the method of uniting the edges of two pieces of wire-cloth, A B,

' each having rectangular meshes formed by the Serial No.2l0,016. (No model.)

longitudinal threads or wires 0 and the transforward and looping it around another transverse wire, as D*, then back again around the first transverse wire, and so on, each alternate loop passing around the first transverse wire and the intermediate loops passing around one of the other transverse wires at a greater or less distance from the first wire. In this way the whipping-wire is secured to the edge of the cloth without projecting on one side of its surface. The two edges to be joined having been similarly treated, they are brought together and the loops are connected by a wire, F, passing the loops formed around the first trans verse wire, D. In this way it will be seen that the edges of the wire-cloth are securely and closely joined, and the two pieces of cloth are practically united in such a manner that there are no projections formed by the whipping-wires upon one side of the cloth, and the edges are prevented from being bent or projected outwardly to form a rough or uneven surface. The whipping-wires preferably are not passed successively around any one of the transverse wires except the first; but by properly arranging them over a greater or less number of wires a perfectly tight and smooth seam may be produced without warping or distorting the cloth in any way. The bindingwires may be' secured in any desired manner and the united sheets applied to any desired form of machine.

When it is desired to use this fabric on dandy-rolls and the like in making fine qualities of paper, where any marks would be obj ectionable, the fabric is secured to the frame of the roll with the seam on the inside, and the outside of the roll is therefore perfectly free from any and all projections. When, however, in making paper it is not necessary to prevent all marks being made on the paper, it is preferable to use the fabric with the seam or overlying wires on the outside, as the marks madeby my improved seam are at most very small, and the wear on the seam is less in this arrangement, as a perfectly smooth surface is brought in contact with the frame.

What I claim is- 1. The method of preparing the edges of wire-cloth, which consists in passing a whipping-thread alternately around the first transverse wire and another transverse wire, the whipping-thread passing over the intermediate transverse wires on one side thereof only, substantially as described.

2. A wire-cloth the edge of which is secured by a whipping-thread, the said whippingthread passing alternately around the first transverse wire and another transverse wire and passing over the intermediate transverse

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