US72212A - Stove-pipe damper - Google Patents

Description

@uitrit tste @anni @fitte DAVID MANUEL,l OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND WILLARD MANUEL, OF SAME PLACE.

Letters .Patent No. 72,212, dated December 17, 1867.

ff-i snort-PIPE DAMPBR.

iigt tlgemle maar it iii tigen; tttttrs ttmt mit uniting part tt tigt stmt.

TO ALL WHOM IT MAY CONCERN: t

i Be it known that I, DAVID MANUEL, of Boston, in the county of Su'olk, and State oi Massachusetts, have invented a new and useful Improvement in Stove-Pipe Dampers'; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being-had to the accompanying drawings, forming part ofthis specification, in which- Figure 1 is a top or bottom view of my improved damper, bothfsides being alike.

Figure 2 is an edge view oi the damper when the pivot-rod is out.

Figure 3 is a section taken in the line :v x, g. 1. i

Similar letters of reference indicate like parts. A A

This invention relates to an improvement in the construction of dampers for stove-pipes, and consists in two cast-iron disks which have fiatvcentral surfaces, and are interlocked, so that they lie close together when united by the pivot suspension-rod of the damper. They have iiuted or corrugated edges, which overlap the opposite Acorrugations on the opposite disks, and form concave radiators above and below, so related to each other that the smoke and heated gases can enter therein from below and receive a reverse movement, which deeets .them against the stove-pipe, thus imparting more heat to the air in a room before inally escaping.

Two cast-iron plates or disks, A A, made precisely alike, have alcentral part, B, made ilat, so that the two disks may lie close together, and cachpurt is countersunk or furrowed across the inner face, for receiving onehalf 'of the pivot-rod a, which is'held in place for locking the two disks A A together, by two bridgedoops, b b, on each of the disks, projecting through corresponding holes in the centre of each one, as shown in fig. 3. On the edge of each of the disksA A are curved wings, c c, which radiate from the centro, and riseY crowning on the outside of the disks, as shown in gs. l and 2. The radiating wings are separated by spaces, 'm 1.11 and are so placed in each disk that when the disks are put together theybreak joints with each other, and the spaces between them open into the concave sides of the` radiators, as shown in g.'2.

The damper is hung inaI stove-pipe by the pivot-rod a, in the usual way, and it will be manifest that when the damper is closedas much as it can be, by turning it square with the pipe, the products of combustion will pass up through the spaces m '1n between tho radiating wings'c c of the lower disk, and strike the concave inside of the radiating wings c c of the upper plate, from which they wilLbeAIefiected against the walls of the stove-y pipe, and impart a portion of their heat to it, before escaping through the spaces m m between the wings cl e of the upper disk of the damper, thereby retaining the products of'combnstion. as long as possible, without actu-` ally cutting o` the draught. v

Having thus described my invention, I claim as new, 'and desire to secure by Letters Patent- A stove-pipe damper formed of two fiat east-iron disks, A A, united solidly in the middle, and interlocked by loops b b, upon the suspension-rod ct, with ,concave radiating edges, c c, arranged and operating as herein described. v DAVID MANUEL.

I Witnesses:

WM.. F. McNAMAnA, ALEX. F. Berners.

Images