US691804A - Indented and perforated material. - Google Patents

Description

No. 691,804. v Patented 1an. 2 8, |902. H. PARKER. IND'ENTED `AND PERFOB'ATEUD MATERIAL.

(Application led Mar. 29, 1901.) .ma Model.)

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To all whom it may concern.- Beit known that I, HOWARD PARKER,

zen of the United States of America, residing y at Bellows I1"alls,in.k the county of Windham g UNITED STATES".

PATENT OFFICE.

HOWARD PARKER, lor RELLoWs EALLs,vERMoNT.

INDENTED AND `PERFORATED MATERIAL.`

sPEciFloAmcN formingpart of Lettrsratevc No. 691,804, dated January 2s, 1902.

' Appiimion find March 29,1901. seria No'. 53,535. (No modela a citiand State of Vermont, have invented a certain new and useful Improvement in Indented and Perforated Material, of which the following is a specification, reference being had to the accompanying drawings, whereinV y Figure lis a face view of a hard-rubber belt embodying said improvement. Fig. 2 is a view of the same in vertical section on the plane of Fig. l. Fig. 3 is a View of the same in vertical section on the plane y y of Fig. 1.

The object of the improvement is the pr'oduction of material in the form of a'plate, belt, cylinder, or other desired and useful form having in it a series of neighboring indentat-ions of a certain shape, with holes in the indentations reaching through to the other side of the material. One f unction for which a belt thus indented and perforated is of special utility is for supporting a Fourdrinier Wire. These Wires are extremely expensive, and when used in connection With the ordinary suction-boxes they are easily torn, so

that their life is extremely short. Itis important, therefore, for the economical operation of a paper-making machine that some agency be interposed between this Wire and the suction-box to relieve the wire of this hard Wear,

curved from end to end. By preference rthey are pointed at two opposite ends, and they have perforations extending through the ma-` terial. `In the case of such an indented and perforated rubber belt underlying'a Fourdrinier wire the former gives the latter perfect.

support against the suction to which the Fourdrinier wire is subjected inuse. y indentations are by preference solocated that those of one row lap past those of the next row. Consider the rows lying inthe direction of the dotted line fr, and this overlapping is apparent. It is a feature which helps to prevent the formation of water-mark in thel paper. The holes in the bottom of the indentaf tions are preferably round. Through these'f holes the Water drawn from the pulp escapes.

I claim as my improvement- 1. Material having in itssurface aseries The Yof neighboring indentations having bottoms curved from end to end with round holes vin the indentations reaching throughto the op# posite side of the material. ij,

2. Material having in its surface aseries of neighboring indentations having' bottomsv 6511 f if curved from end to end, approximately pointy l ed at two opposite ends in surface outline,

and with holes in the indentationsreaching through to the opposite side of the material.

3. Material having in its surface a'seriesy ,y of neighboring indentations having bottoms through to the opposite side `of the materiahA l Witnesses: y

BERTHA I. CAPRAU, CHARLES II. RoBB.

HOWARD PARKER; y

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