No. 623,426. Patented Apr. I8, |899.

W. REDPATH.

SHUKE CONSUMER.

(Application led Nov. 19, 189B.)

(nu Model.)

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'llivrrnn STATES PATENT FICE.

IALTER REDPATH, OF TORONTO, CANADA, ASSIGNOR OF ONE-HALF TO ANDREV HUGH REID, OF SAME PLACE.

SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 623,426, dated April 18, 1899. Application filed November 19, 1898. Serial No. 696,921. (No model.)

To all whom it may concern:

Be it known that I, WALTER REDPATH, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain newand useful Improvements in Smoke-Consu mers, of which the following is a specification.

My invention relates to improvements in smoke-consumers for furnaces; and the object of the invention is to design a simple device which will be always in position to be operated and will be operated automatically without any attention whatever on the part of the fireman or attendant of the furnace; and it consists, essentially, of providing on the steam-pipe leading into the furnace above the fire and on the outside of the furnacechamber a check-valve provided with a central rod or spindle which is controlled through a vacuum-pot which is itself connected at one end to a lever pivoted on a suitable support extending over the rod of the check-valve and connected on the opposite end by a rod to a bracket connect-ed to the damper of the furnace-door, the parts being constructed and arranged as hereinafter more particularly eX- pla-ined.

Eigu re lis a perspective view of a portion of the front of a furnace and boiler, showing my improvement. Fig. 2 is an enlarged section through the vacuum-pot and check-valve.

ln the drawings like letters of reference indicate corresponding parts in both the figures.

A is the front of the furnace, B vthe door thereof, and O the damper in the door, which is provided with the usual handle C.

D is a steam-pipe which extends down from the boiler and is provided at the inner end, inside the furnace-chamber, as shown in dotted lines, with a suitable spraying device d.

E is a check-valve, the central spindle @of which is provided with the usual valve, having its seat on the partition e Ii1 is a piston provided with a rod f, which is pivotally held at the bottom in the bracket f.

G is a vacuum-pot, which is preferably cylindrical in form and provided with a bottom G', having perforations g to admit the air.

II is a petcock, and II/ is a valve provided with a central stem 71 having the head 7L and the spring 7b2 between the head of the valvechamber. The head 7i' covers the orifice g.

I I are a pair of brackets secured to the top of the vacuum-pot G. L

.I isa bracket supported upon the central portion of the check-valve and provided with forked upper ends j and j.

K is a lever pivoted on a pinj2 in the forked end 7' and pivotally connected by a pin i to the brackets I at the top of the vacuum-pot G.

L is a rod having a lower eye l, which is pivotally connected to the trunnion-shaped end of the bracket M, secured to the damper C. The upper end is provided with a jaw Z', which is connected by the pin l2 to a jaw Z3, pivotally connected by the bolt Z4 to the jaw formed at the bottom of the double jaw Z5, which is pivotally connected by the pin ZG to the end of the long end of the lever K. It is hardly necessary to describe the eXac-t construction immediately set forth above, as such construction is a common universal joint, but I have done so for the sake of clearness.

The operation of myinvention is as follows: As the handle O is the handle to open the door, immediately such handle is pulled upon the door B is opened, and the damper also is opened at the same time, thereby pushing upon the rod L and raising thelever K, so that the spindle e of the check-valve is permitted 0f an upward movement, thereby opening the f valve and allowing the steam to pass over the fire. As the lever K is tilted on its pivot and forces the vacuum-pot G down upon the piston F the air forces its way through the valve I-I' until the top of the vacuum-pot reaches the top of the piston. Then the coal has been thrown in upon the fire and the door again closed, the petcock H being open allows the air to gradually enter above the piston F and relieve the vacuum, thereby causing the vacnum-pot to rise and tilt the lever on its pivot and gradually lower the spindle e of the checkvalve, and thereby gradually cutting off the supply of steam. The damper O also gradually closes. v

It will thus be seen that the operation of my device will be perfectly automatic upon each opening of the door of the furnace to throw in coal, and as all the parts are permanently IOO connected together there is no danger of my device getting out of order and becoming inoperative.

It will of course be understood in the operation of my device that the Weight of the damper overbalances the weight of the vacuumpot and the resistance created bythe vacuum therein when the vacuum-pot is lowered upon the piston. -The piston, therefore, only allows of the Weight of the damper grad ually overcoming the Weight and resistance in the vacuum-pot.

Vhat I claim as my invention isl. The combination with the steam-pipe for conveying steam into the interior of the furnace and the door of such furnace, of acheckvalve situated intermediate of the length of the steam-pipe and provided with an upwardly-extending spindle, a lever suitably -pivoted and extending over the spindle, a

vacuum-pot connected at one end of the lever and provided with an air-valve and petcock at the upper end thereof and a suitably-perforated bottom, a piston located in the pot and a rod therefor suitably connected at the bottom to a support and a rod connected to the furnace-door at one end and having a universal-joint connection at the opposite end to the long end of the leveras shown and for the purpose specified.

2. The combination With the steam-pipe for conveying steam into the interior of the furnace, and the door of such furnace, of a checkvalve situated intermediate of the length of the steam-pipe and provided with an upwardly-extending spindle, a lever, a bracket held on the top of the check-valve and having a pivotal support at one end thereof for the lever and a guiding-jaw at the opposite end, a vacuu ni-pot connected at one end of the lever and provided with an air-valve and petcock at the upper end thereof and a suitably-perforated bottom, a piston located in the pot and a rod therefor suitably connected at the bottom to a support and a rod connected to the furnace-door at one end and having a universal-joint connection at the opposite end to the long end of the lever as and for the purpose specified.

3. The combination with the steam-pipe for conveying steam into the interior of the furnace and the door of such furnace, of a checkvalve situated intermediate of the length of the steam -pipe and provided with an upwardly-extending spindle, the lever suitably pivoted and extending over the spindle, avacnum-pot connected at one end of the lever and provided With an air-valve and petcock at the upper end thereof and a suitably-perforated bottom, a piston located in the pot and a rod therefor suitably connected at the bottom to a support, a damper for the furnacedoor hinged at the top and provided with a suitable handle, a bracket extending laterally therefrom and forming a trunnion, a rod having an eye at the bottom end journaled on the trunnion and a universal-joint connection at the top of Ithe rod-as shown and for the purpose specified.

VALTER REDPATH.

Vitnesses:

A. BOYD, A. H. MCADAM.