US36128A - Improvement in fire-regulators for steam-boilers - Google Patents

Description

MPETERS. PHOTO-LI'HOGRAPHER, WASHINGTON, D Cy Nrrnn .STATES JAMES M. ASTIVEN, OF NEW YORK, N.

PATENT OFFICE.

Y., ASSIGNOR TO HIMSELF, MICHAEL TUOMEY, AND JOHN ELDER, JR., OF SAME PLACE.

Specification forming part of Letters Patent No. 36,128, dated August 5, 1862.

.To @ZZ whom t may concern: v

-Beit known that I, J Mns M. STIVEN, of the city and State of New York, have invented, made, and applied to use a certain new and useful Improvement in Regulators for Steam` Boilers and Steam-IIeating or other Apparatus; and I do hereby declare that the following is a full, clear, and exact description of the said invention, reference being had to the annexed drawings, making part of this specication, whereinl Figure l is an elevation of my regulator. Fig. 2 is a side view of the same, and Figs. 3 and 4 are vertical sections at right angles to each other of the said apparatus.

Similar marks of reference denote the same parts.

Various devices have heretofore been made for -regulating the admission of air or the escape of the draft from the iire by means of the pressure in the boiler. In these instances the pressure of the steam itself has been employed, and but little motion could be obtained, except by an extent of leverage.

The nature oi' my invention consists in a cyl'- inder and piston acted upon by Water,(that is under pressure transmitted from the boiler through a pipe communicating with the lower portion ofthe Waterspace of the boiler,) said piston being provided with a rod and adjusting screw to regulate the action of a spring and cause the apparatus to be operative by means of different degrees of pressure in the boiler, and the motion thus obtained and regulated is applied through the medium of a lev`er and suitable connections to open or close the fire-door, the ash-door, the fluedamper, or the cold-air damper; or my said apparatus may be made to act on two or more of these simultaneously, thus causing the pressure in the boiler to become an automatic regulator of the heat through the inlets to or out.- lets from the furnace,or both.

In the drawings, a isa pipe communicating with the water-space of the boiler as low down as convenient, b is a water-chamber communicating by the pipe c with the cylinder d, that is provided with the cover e, and contains the piston f, that is fitted With the double-cup leathers l 1, as shown in Figs. 3 and 4. The piston-rod g passes up throughthe head e, and

the upper end is guided in the cylinderpat the upper end ofthe frame 7i. This cylinder p is made with a screw-thread ou the exterior, taking the cap m on the said frame h, and q is a hand-wheel by which the screw-cylinder p can be turned. Zis a spring around the rod g, resting at the lower end on a shoulder, and o is an index-pointer extending from the under side 'of p through a slot in m to the index n.- It will now be evident that the pressure of steam in the boiler, acting through the water thereof on the water or other fluid in the chamber b and cylinder d, willpress upon and move the piston f and rod g, and according to the point at which the spring lis compressed by the action of the screw p and indicated on the dial n by the pointer o, so the piston will commence to vmove with greater or less pressure. Thus in a boiler or in steamheating apparatus the regulation will be effected after a certain point of pressure and consequent temperature are attained.

In order to communicate the motion -i'rom the rod g, I employ the lever` k 0n a fulcrum at 5, and passing through a mortise in g, wherein is a link, i, attached by the pin 2, and united with the lever lc by the pin 3, so that the lever is free to move as the pistonrod goes up or down. From the end 0r ends of this lever 7c rods or chains pass to the respective doors or dampers, as at 4 and 5. The.

mode of communicating motion to the doors or dampers through the agency of rods, bent levers, or similar devices will readily suggest themselves to the mechanic according to the circumstances and mode of setting of the furnace or steam apparatus, the operations being so arranged for that the re is deadened by the checking of the draft as the pistonf rises, and caused to burn with increased brightness as the piston descends by said doors or dampers directing more draft through the fire.

By the use of the chamber b the water in the cylinder el is kept cool, and hence not liable to injure the cup-leather packings Il; but a siphon -pipe/may be substituted for this chamber b and effect the same object.

What I claim, and desire to secure by Let? ters Patent, is-

1. The cylinder d, pistonf, and chamber b, or its equivalent, in combination with the 1ever-k and a communication to the dampers or In Witness whereof I have hereunto set my doors employed in steam apparatus for regusignature this 21st day of June, 1862.

lat-,ing the draft of air according to the press- 1 ure of Water n the cylinder d, as set forthr JAMES STIVIJN' 2. The screw p, spring Z, and index, in com- Vtnesses:

binaton with `he cylinder d, piston f, rod y, LEMUEL W. SERRELL,

and lever k, for the purposes and as seb forth. TI-Ios. GEO. HAROLD.

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