US152692A

US152692A - Improvement in grates for steam-boilers

Info

Publication number: US152692A
Authority: US
Publication date: 1874-06-30
Anticipated expiration: 1891-06-30

Description

UNITED STATES PATENT OFFICE.

JAMES SANDERS, OF WAPPINGERS FALLS, NEW YORK, ASSIGNOR TO DIS- BROW AND HALLIWELL, OF SAME PLACE.

IMPROVEMENT IN GRATES FOR STEAM-BOILERS.

Specification forming part of- Letters Patent No. 152,692, dated June 30, 1874 application filed May 29, 1874.

To all whom it may concern Be it known that I, JAMES SANDERS, of

. Wa-ppingers Falls, in the county of Dutchess the grate-bars employed for steam-boilers, and

consists of apeculiar construction of the bars, which is hereinafter pointed out and specifically claimed, whereby a free circulation of air is afforded and the liability of choking is avoided. 1

In the accompanying drawing, which forms part of this specification, Figure 1 represents a plan of a grate constructed in accordance with my invention; Fig. 2, a longitudinal vertical section of the same and Fig. 3, a transverse vertical section on the line a: m.

A A are the fire-bars of the grate, arranged side by side, and in one, two, or more longitudinal series, the one back of the other. Said bars are formed with end portions 1) c, and

preferably with intermediate portions d d, of a suitable width to keep the bars at a proper distance apart for the passage of air up between them, and are furthermore provided with lateral projections or wings e e, which, while serving to support the fuel, allow of the passage of air up in between them to promote combustion; and the more efi'ectual] y to secure this latter result, said wings extend only for a portion of the depth of each bar, and are beveled or taper ofI where they join the body of the bar, thus giving a large or free airspace in between the bars to promote combustion.

B, B, and G are crossbearers on which the bars are supported. The bearers B B are made sloping or beveling downward in an inward direction on their upper edges, and the end portions b of the bars made similarly sloping on their under surfaces where they rest on said bars, whereby increased facility is afforded for contraction and expansion of the bars and clearance of cinder choking said ends of the bars. The other ends of the bars 0 are of hook form, to give the bars a lock or hold on the intermediate bar U, which is made double or hollow for the purpose, and said ends or portions of the bars constructed to form an upper cavity, f, for the further passage of cinder, and free admission of air to the fire.

hat I claim is l The combination, with the bars A, havinghooked ends 0 for engaging with the intermediate bar 0, of the portions d for holding the bars at a suitable distance apart, the wings 0 extending only for a portion of the depth of the bars for the free passage of air, and the cavities f in the ends of the bars for the admission of air and passage of cinders, substantially as herein shown and described.

JAMES SANDERS.

Witnesses W. HENRY REESE, J OSEPH FAULKNER.