US24480A

US24480A - Improvement in corrugating metallic sheets

Info

Publication number: US24480A
Authority: US
Publication date: 1859-06-21
Anticipated expiration: 1876-06-21

Description

' UNITED STATES PATENT OFFICE.

RlCHA-RD MONTGOMERY, OF NEW YORK, N. Y.

IMPROVEMENT IN CORRUGATING METALLIC SHEETS.

Specification forming part of Letters Patent No. 24,480, dated June 21, 18,59.

.To all whom it may concern.-

Beit known that I, RICHARD MONTGOMERY, of the city, county, and State of New York, have invented an Improvement `in the Corrugated Metallic Plates or Sheets for Boilers, dac., patented to me on the 17th day of May, 1853; and I do hereby declare that the following is a full, clear, and exact description of 4the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, so as to' enable others Jskilled in the art to make and use my inven- Figure 1 represents a plan view of a corrugated plate with my improvement added thereto. Fig. 2 represents a cross-section through the plate shown in Fig. 1, the s ection being taken on line a. b, Fig. l. Fig. 3 represents part 'of a iue made from plates manufactured on the principle of my invention.

From Fig. 2 it will be seen that the flanges are made thicker than the corrugated portion of the plate, as provided for in my aforesaid patent, so as to airord suitable strength and form of metal for uniting the sheets.

My improvement will be readily understood from Figs. 1 and 2, where'it will be seen the corrugat-ions A B are not straight, as in my former patent, but are waved so that each of the ribs A B of the corrugated plates has a double curvature, one in'the direction of its length, as seen in Fig. 1, and

one across its width, as seen in Fig. 2. lt will also be seen that each of these waved ribs or corrugations is longer than what a straight rib or corrugation would be. Consequently the surface of a plate provided with waved corrugations is greater than the surface of a plate with straighticorrugations, while at the same time the corrugations are continuous from side to side, so that when bent together the ends of the corrugations will meet or be opposite to each other. Thus my waved and corrugated plates for boilers oler a larger heating-surface than any other plate of the same dimensions provided With straight corrugations. Again, these plates provided with doubly-curved continuous ribsA are far less liable to stretch in a direction across the ribs than plates which have straight continuous corrugations. Vhen the waved corrugations areso arranged as to run in the direction of the flame, the heated gases striking one wave of the corrugations (the corrugations being continuous) will be deflected and impinge against the wave of the next corrugation, &;c., as indicated by the arrow in Fig. 1, and thus the heated gases will be waving the corrugations so that each corrugation along its whole length runs back and forth over various layers of fibers whichever way the plate may be rolled. It will be understood that the metal may be so rolled as'to be thicker at the extreme points of the lateral waves than along the slopes or sides of the waves.

Having described my invention, what I claim, and desire to secure by Let-ters Patent as an improvement on the invention patented to me on the 17th day of May, 1853,

The waved corrugated Wrought-metal plate for boilers, as herein described, in combination with iiat margins Aof greater thickness than its middle, substantially as described.

R. MONTGOMERY. Witnesses:

THos. H. DODGE, M. J. MONTGOMERY..