US80832A - Francis d - Google Patents

Description

F. D. PASTQRlUS. Stove-Pipe Damper.

Patented Aug. 11, 1868.

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Letters Patent No. 80,832, dated August 11, 1868.

IMPROVEMENT IN STOVE-PIPE DAMPERS.

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TO ALL WHOM IT MAY cononnn:

Be it known that I, FRANCIS D. PASTORIUS, of the city'and county of Philadelphia, and State of Pennsyl- Vania, have invented a new and improved Automatic Damper, Valve-Seat, and Gas-Escape; and I do. hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying sheet 'of drawings, and to the letters of reference marked thereon. D

My invention consists in inserting a valve-seat and gas escape in a stove-pipe, flue, or other suitable receptacle, to which is attached an automatic valve,'which closes on the valve seat when the heat increases, and checks the fire by stopping the draught, and opens when the heat decreases. The valve-seat and gas-escape has a'number of openings or holes, to maintain combustion and permit the gaseous products of combustion to escape when the damper is closed.

On reference to the accompanying sheet of drawings, making part of this specification Figure 1 is a plan view. i v

Figure 2 is a sectional view of the same, being a valve-seat and gas-escape formed of the frustum of abollow cone, the apex of the same being above the damper or valve. i

Figure 3 shows the'same'as in fig. 2, with the apex below the valve.

Figure 4 shows a valve-seat and gas-escape, when formed of the frustum of a hollow scalene cone; and

Figure 5 is a sectional view, showing the construction of the valve-seat and gas-escape, as at first proposed.

Similar letters refer to similar parts in the several views.

A is a stove-pipe, flue, or other suitable receptacle, into which is fitted a valve-seat and gas-escape, 13, formed of the frustum of a hollow cone, to which are fitted the lugs do, in which turns the bentvalve-rod C, which carries the valve D. The part a of the said rod outside of the stove-pipe or other suitable receptacle has a screw formed on it, over which takes the nut or counterpoise E. The parts trend 6 of the rod, instead of making an anglc, meet in a curve, F, as shown in fig. 1, so that the counterpoise E can be screwed beyond the axis of rotation or part 6 of the rod. The part a of the rod, and the valve D, should'be in the same plane, that the attendant may be able to judge of the degree of opening of the 'valve by the inclination of the part a. The valve-seat and gas-escape has its surface perforated, as shown at c c c, figs. 1, 2, and 3, to maintain com bustion and permit the gaseous products of combustion to escape when the valve D is closed.

Before starting afirc, the counterpoise E is screwed along the end, a, of the rod C, until it passes the a'uis of rotation or part 6, into the curve F; then the valve D drops wide open by its own weight, giving a perfectly free draught. When the fire gets thoroughly kindled, the weight or countcrpoise is adjusted at a point-on the screw to balancc the valveopen suiliciently wide to preserve a regular temperature, and keep up aslow combus then. As the draught increases, it. closes the valve, and when itulocreases,the'valve opens by its own weight. It is generally feund i-n motion,and serves to indicate plainly the force of the fire.

As shown in fig. 2, the apex (Z of the cone is above the valve, and in figl3 it is below it. As shown in fig. 4, the valve-scat and gas-escape is a truncated hollow scalcne cone, that is, where the axis of rotatiou of the cone is not perpendicular to thebases When the apex isbc'low the valve, as in fig 3, the scale or soot from the Stovepipe orother suitable receptacle does not settle and harden on the inclined surface ofthe Valve-seat, and obstruct the passage of; the gases of combustion through the openings ci c, &c. I at first contemplated making the valve-seat and gas-escape of a flat ring fixed to the pipe or other suitable receptacle, as shown in fig. 5. i I wish it distinctly understood that I do not confine myself to the valve-seat B, as shown and described, knowing that it can be made of other forms approaching to that of the frus-tum of a cone, andaccomplish the end sought; as, for instance, it can be a frustum of a hollow pyramid of any number of sides; the frnstum of a hollow oblate spheroidt the frnstum of a hollow paraboloid, or the frustdm of a hollow hyperbolic conoidl I claim a valve-seat and gas-escape fixed ina stove-pipe, flue, or other suitable receptacle, the surface or sides of which incline and converge to-a point at or near the centre of' the said stove-pipe or other, the point.. of convergence to be either above or below the valve, and the surface or sides to be either straight or curved.

The stove-pipe, flue, or valve-receptacle, can be of forms other than cylindrical, as shown at A. It can be formed of a short cylindrical length, and be cast in one piece, along with the valve-seat. It can be a hollow globe with pipe conneetions, or a hollow frustum of a spheroid with pipe-connections, and the valve-seat cast or otherwise-fixed in it, and still carry out the design or end of the invention, which is to construct an automatic valve and valve-seat or gas-escape, which will carry off the gaseous products of combustion, maintain a slow combustion when the valve is closed, and at the same time not interfere with the self-acting or automatic working of the valve. If it should be found expedient to use the damper for the purposes of ventilation, the perforations in the valve-seat may be dispensed with. v

I do not claim to be the inventor of the automatic oi self-acting valve, being aware that Letters Patent were granted to Charles H. Lavis, June 20,1865, for a damper, using a self-acting valve in combination with other parts. v

I am also aware that the. said self-acting or automatic valve for dampers for stoves, and for ventilating chambers, is an old device, and not the subject of a patent in itself.

What I claim as my invention, and desire to secure by Letters Patent, is 1. A valve-scat and gas-escape, in combinationwith an automatic or self-acting valve, for the purpose specifial.

2. A valve-seat and gas-escape, in combination with the automatic or self-acting valve D,.and the stovepipe, flue, or other suitable receptacle, A, as shown.

v3. A valve-seat andgas-escape, B, in combination with the rod C, valve D, and the counterpoise E, as shown. In testimony whereof, I hereunto sign my name to this specification in presence of two subscribing witnesses.

FRANCIS D. PASTORIUS.

Witnesses:

J. P. DELANEY, CH LEs H. LAv s.

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