US547235A - anthony - Google Patents

Description

(No Model.) 2' Sheets-Sheet 1.

E. W. ANTHONY. DAMPER FOR HEATING swovns 0R FURNAGES.

No. 547,235. v I Patented Oct. 1, 1895.

WITNESSES INVEN'TEIR AN DREW REHAHANL PHO'IO-UmOYWASNIN GTO N,D b

(No Model.) 2 Sheets-Sheet 2.

- E. W. ANTHONY. DAMPER FOR HEATING swovns 0R FURNACES.

No. 547,235. Patented 0Ct. 1, 1895.

ANDREW B GRAHAM.PHOTOLm-IQWASNINGTUNEC both these objections.

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EDGAR W. ANTHONY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE SMITH & ANTHONY COMPANY, OF SAME PLACE.

DAMPER FOR HEATING STOVES OR FURNACES.

SPECIFICATION forming part of Letters IPatent No. 547,235, dated October 1, 1895.

Application filed May 26, 1894- Serial No. 512,572. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDGAR WV. ANTHONY, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Dampers for Heating Stoves or Furnaces,of which the following is a full, clear, and exact description, reference being had to the accompanyingdrawings, forming a part of this specification, in explaining its nature.

In most air-heating furnaces a pipe extends across the air-heating chamber from the radiator-shell to the pipe leading to the chimney. This pipe contains the passage connectin g the combustion-chamber with the flue and also with the downtake. It is desirable that there be a damper in this pipe between the combustion-chamber and the chimneypipe or downtake, where one is used and dampers have been so located; but their use has been objectionable, in that it has been difficult to secure them in such pipe because of its position, and it has been especially difficult to remove a worn out or disabled one and substitute therefor-a new one. This was because the ordinary or old forms of damper and damper-hanger were used, and out of this grew another defect, and that was the escape of gas from the combustion-chamber about the hole through which the ordinary damperoperating rod or spindle extended, more or less gas thereby leaking into the air-heating chamber. My present invention overcomes It affords a means by which the damper may be easily removed and replaced or another one substituted, and it prevents the leakage of gas into the air-heating chamber.

In the drawings, Figure 1 is a view in front elevation of the smoke-pipe and damper, a portion of the pipe being broken out to show the construction hereinafter described. Fig. 2 is a plan view thereof, representing the pipe as attached to the furnace or stove shell. Fig. 3 is a View in elevation of a furnace partly broken away, showing the attachment of my device to an ordinary furnace.

In carrying my invention into efiect I prefer to use the pipe A, having a flange a, by which it is secured to the radiator and forming the direct escape-passage ct from the combustion-chamber to the pipe leading to the chimney, and also having the downwardly-extending collar 6L2, which receives the pipe forming the indirect passage or downtake. This pipe has at its forward end the damper B, which is secured in place by means of a pin 5 at its lower edge, which enters into a cup 1) arranged to receive it, and a spindle 11 preferably square and extending through a hole 12 in the casting and entering the square holes 12 in the damper, the said holes being in line with each other. This provides a short spindle, one that can be easily inserted into the holes of the damper.

To prevent the escape of gas about the spindle-hole there is cast about the hole and at a suitable distance from it an upwardlyextending wall 0, and there is also cast with or attached to the pipe-casting, immediately about the opening necessary for the spindle, an inner wall 0'. This, with the outer wall, forms an annular chamber 0 which is filled with sand and into which the edge of the inverted cup 0 carried by the spindle, enters, (see Fig. 1,) and there is thus established a sand-joint around the spindle, through which gas cannot escape.

The spindle b is held in place partly by its weight and partly by the means employed for turning it, which consists generally of the crank-arm c and a rod 0 The inner wall a, as I have stated, may be cast, or it may be formed by a threaded tube arranged to screw into the casting.

In Fig. 3 O is the air-chamber of the furnace and D is the downtake. I attach my damper to the casting Awithin the air-chamber C. It is necessary in this construction that the damper be secured to the casting A in such a manner that no passages are left by which gas might escape into the air-chamber O.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United states 1. In a heating stove or furnace, the casting A forming the direct escape-port and having the opening for the damper operating spindle and a chamber formed about said opening containing sand or similar material and the damper B and damper spindle passing" through said opening and having an inverted cup which enters into the sand or other material contained in the chamber, as and for the purposes described.

2. In a heating stove or furnace, the combination of the castingA having the chamber 0 formed by the walls 0 c, as described and surrounding the damper spindle hole, with 10 the damper B having the sockets I), the removable spindle and the inverted cup 0 carried by the spindle and entering the chamber c and sand or similar material contained in said chamber to establish a joint in connection with the cup 0 as and for the purposes described.

EDGAR W. ANTHONY. Witnesses:

F. F. RAYMOND, 2d, J. M. DoLAN.

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