US805295A - Apparatus for preventing the escape of gas from gas-generators. - Google Patents

Description

PATENTED NOV. 21, 1905.

J. HOFMAEE,

E OF GAS FHOEE GAS GENERATORS.

APPLICATION FILED AUG. 14. 1905.

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APPARATUS FOR PREVENTING THE'ESCAPE OF GAS FROM GAS-GENERATORS Specification of Letters Patent.

Application filed August 14, 1905. Serial No. 274,152.

Gas-G enerators and the Like During the Stokand gases. closing the stoke-hole opening in the head-.

ing Operation, of which the following is a specification.

The present invention relates, to improvements in apparatus for preventing the escapeof gas from gas-generators and other furnaces through the stoke-hole during the stoking operation by admitting steam into the stokehole during the time the lid or cover is opened for giving access to the interior of the generator. In apparatus of this kind the contrivance for admitting and dispersing the steam, which consists in a perforated pipe.- coil, is located in a head-piece of the apparatus, secured in front of the stoke-hole to the Wall of the generator. Being continually exposed to the heat and to the generated gases, this perforated coil must frequently be cleaned to prevent the perforations from being incrusted by tar and other products of combustion. Moreover, in the known apparatus the lid or fire-door, being so arranged as to slide over the stoke-hole and its operation being thus necessarily attended with considerable friction, requires also to be frequently cleaned in order to prevent the sliding surfaces from baking together. My present invention contemplates providing the said head-piece with a steam-coil carrier and a lid or cover, both of which are adapted to be swung on the stokehole or away from the stoke-hole.

By the term carrier I intend any suitable mechanical device by which the steamcoil is supported in place on the stoke-hole and is made capableof movement'to or away 7 from the stoke-hole, as desired.

In the carrier is arranged the contrivance for admitting steam, and this carrier is so combiued with the cockfor supplying said contrivance with steam thaton being swung down upon the stoke-hole opening in the head-piece it acts to open the steam-cock, and, on the other hand, when it is swung back it acts to close the steam-cock and carry the steam-admitting contrivance out of reach of-the heat The lid or cover serves for tightly piece during the gas-generating period. The

2, 4, and 5.

carrier and lid may be so arranged that each can be operated independently of the other;

but it is preferred to so combine them that either of them is swung down by the swinging back of the other, and in this case it is preferred to arrange the two to each other.

Patented Nov. 21,1905.

at right angles My preferred form of the improved appalines 3 3 of Fig. 2. Fig. 4 is a plan showing the carrier for the steam-admitting contrivance swung away from the stoke-hole. Fig. 5 is a section on the lines 5 5 of Fig. 2.

a is the stoke-hole in the generator, and b the head-piece secured to the wall of the genorator or furnace over the stoke-hole and having in it a stoke-hole opening corresponding to the stoke-hole in the generator. It carries two shafts c and (Z, arranged at right angles to each other. The adjacent ends of these shafts are provided with bevel-wheels e and j, which are in gear with a common bevelwheel Fig. 2.

The carrier it, containing the 'contrivance for admitting steam into the stoke-hole, is. rigidly attached by arm it to the shaft 0;

It has a cup-shaped opening it, corresponding with the stoke-hole opening Z) in the conical extension 5 of the head-piece b. The cover or lid Z, which is to close the stoke-hole opening, is by arm Z attached to the shaft cl, Figs. The steam-coil 2', provided with perforations a", directed toward the stokehole, is arranged inside a circular groove of the carrier 71. The end i of the coil z' is closed, and the other end 6 opens into an axial bore 0' of the shaft- 0, to which at c is screwed the plug m of the steam-cock, having the steamways m and m, Fig. 2, and which on the shaft being turned turns in the casting a.

The steam-pipe p is by a coupling-nut 0 connected with the steam-cock. The steam-coil c' is typical of any suitable steam-admitting contrivance, and I desire to be understood as including any such contrivance Within my claims.

The operation of the apparatus is as follows: In Figs. 1, 2, and 3 theseveralparts are shown in a position .to give access to the generator or furnace-tnat is to say, the cover I of gas from gas generators and furnaces duris moved away from the stoke-hole, and the carrier 7L, containing the contrivance Z for adi l 4 l mitting steam into the stoke-hole a, is down on the extension I) around the stoke-hole 1 opening of the head-piece b.- The stoke-hole is free, and steam from the steam-pipe 1.) en ters through the channel 91" of the cock-casing n,

the cock, and through the bore 0, provided in through the fine perforations i into the stokehole to prevent the escape of gas. When the stoking is finished, the lid or cover Z is turned down, and in consequence of the described connection of the shafts a and (Z by their bevel-wheels e and f with thecommon bevel wheel g this movement operates to swing the carrier h away from its seat on the head-piece Z2. Figs. 4: and 5 show the lid Z in its closing position. By the same movement the steam is turned off.

that I clai.m,'and desire to secure by Letters Patent of the United States, is v 1. In an apparatus for preventing the escape of gas from gas generators and furnaces during the stoking and like operations, the combination of a lid orcover adapted to close the stoke-hole opening, an annular perforated steam-coil adapted to discharge into the stokehole, a carrier for said coil, and means for moving the lid and the carrier to and away from the stoke-hole opening, all substantially as set forth.

2. In an apparatus for preventing the escape of gas from gas generators and furnaces during the stoking and the like operations, the combination of a lid or cover adapted to close the stoke-hole opening, an annular perforated steam-pipe coil adapted to discharge into the stoke-hole, a carrier for said coil movable to and from the stoke-hole, and means connected with the carrier and the lid arranged and operating'to move one of the same toward the stoke-hole opening when the other is being moved away from the said opening, all substantially as set forth.

3. In apparatus for preventing the escape ing the stohing and the like operations, an annular pnrforatmil steam-pipe coil adapted to discharge into the stokeholc opening, a carrier for said coil movable to and from the stoke-hole opening, means for connecting the coil to .a source of steam-surmly, a cock for h h I 2 d 5 controlling the steam-supply, and'connections t roug tie ways m an m of the plug of whereby the cock is automatically turned on I or off according as the carrier is moved to or the shaft 0, into the coil 2, and from there Q from the stoke-hole, all substantially as set forth.

4:. In an apparatus for preventing the es cape of gas from gas generators and furnaces during the stoking and like operations, the combination of a lid adapted to close the stokehole opening, an annular perforated steampipe coil arranged to discharge into the stokehole, shafts to which said lid and carrier are respectively secured, supported in bearings at right angles to each other, and beveled gearing connecting the adjoining ends of said shafts, all substantially as set forth.

5. In an apparatus for preventing the escape of gas from gas generators and furnaces during the stoking and like operations, comprising a lid adapted to close the stoke-hole opening, a carrier allowing access to the stokehole, a perforated steam-pipe coil arranged in said carrier and supporting-shafts for said carrier and lid, connected by beveled gearing whereby when the lid is swung onto its seat over the stoke-hole opening, the carrier is swung away from thestoke-hole, and vice versa, the combination with the shaft of the Steam-coil carrier and steani-supply connections for the coil, of a cock for controlling said steam-Eu ppl'y, adapted to be turned on and off by the movement of said shaft, all substantially'as set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

Jus'rus HOFMANN.

\Vitnesses:

ERNs'r KATZ,

A. W. MAX.

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