US258937A - X a a xa - Google Patents

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M.- A. MARTIN.

4 SEAM FOB, WIRE CLOTH PoR APBR MANUPAGTUBL No. 258,937. Patented June 6, 1882,

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UNITED STATES PATENT OFFICE.

MARY A. MARTIN, OF SPRINGFIELD, MASSACHUSETTS.

SEAM FOR WIRE-CLOTHy FOR PAPER MANUFACTURE.

SPECIFICATION forming part of Letters Patent o. 258,937, dated June 6, 1882.

Application filed April414, 1882. (No model.)

To all whom it may concern:

Be it known that I, MARY A. MARTIN, a citizenof the United States, residing at Springfield, in the count-y of Hampden and State of Massachusetts, have invented a certain new and useful Improvement in Scams for Wire- Cloth for Paper Manufacture, of which the following is a specification, reference being` had to the accompanying drawings, forming a part thereof.

Figure 1 is a top view of a section of the wire-cloth cover of a dandy-roll sewed together by the wire B according to my invention. Fig. 2 is an end view of the wire-cloth and seam shown in Fig. 1. Fig. 3 is a top view ofasection of the wire-cloth cover sewed together by the wire E in a manner heretofore used. Fig. 4 is an end view of the wire-cloth and seam shown in Fig'. 3. Fig. 5 is the dandy-roll, with an enlarged view of the improved seam. l

In seams heretofore made the edges ot the wire-cloth have been interwoven and the wire strands twisted together under the surface of thelcloth; or the edges have been unraveled and the projecting strands bent backward and the seam-thread run around the respective edge-wires, as'shown in Fig. 3, leaving an unlled space in the cloth, and the only force by which the edges were held together and prevented from unraveling being that produced by turning under the wire strands.

In my invention, after first unraveling the edges and bending under and backward the projecting strands, the seam-Wire B is carried half-way around the wires F F, on their under side, then up and over' the wire I, behind its knuckle on the wire F, and between the Wires F and P, then back again half-way around the Wires F F, on their under side, up and over and behind the knuckle of the alternate opposite wire I, and so continuously. In myinvention theseam-wire B does not run around the wires F F, but is made to run over the wires I, behind the knuckle yon the wire F, in order to strengthen thetension of the seam, 'the seamwire B, in running half-way around the wir( s F F and over and behind the knuckle of the wireI, locking together the edges of the cloth.

I claim as my invention- In a seam for wire-cloth for paper manufacture, the combination of the unraveled and backward-bent strands, and the seam-wire B, carried half-way around the edge-wires F F, and over and behind the knuckle ot' each alternate opposite wire I, as and for the purpose set forth.

MARY A. MARTIN.

VWitnesses JOHN DUNBAR, J oHN J REARDON.

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