Improvements in Furnace Reverse Valves.
Year: 1897

page_text: Date of Application, 16th Feb., 1897-Accepted, 8th May, 1897
COMPLETE SPECIFICATION.
Improvements in Furnace Reverse Valves.
I, SAMUEL FORTER, of Newcastle, in the County of Lawrence, and State of
Pennsylvania, United States of America, Manufacturer, do hereby declare the
nature of this invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
In the accompanying drawings, Fig. 1 is a half-section on line A-B of
Fig. 3, and a half-side view of my improvement. Fig. 2 is a half section on
line C-D-E-F of Fig. 1 and half front elevation, and Fig. 3 is a half top view
leaving casing off and a half top view with casing on.
My invention generally stated relates to reversible valves, used in heating
furnaces and for directing the currents of gas alternately to the right and left.
It may be employed also in other structures where a shifting and water sealed
valve is required.
The primary purpose of my invention is to so water-seal the
valve that should the valve or its seat warp there will be no leakage of the gas.
This is not possible with a valve which is merely water cooled.
A further purpose of my invention is to locate the operating shafts beneath the
water seal and so prevent leakage of gas past them. A third feature of my
invention resides in the counterbalancing pivoted spring which balances the weight
of the valve and assists in its reversal.
In the several views which constitute part of this specification, 1 is a brick-lined
valve casing resting in the water-seal. 2 is a valve which controls the passage of
gas or air to said casing. Said casing 1 is provided with the ordinary cleaning
doors 3, 3.
Said
4 is the bed plate casting which acts as a seat for the valve.
bed plate is provided with two outer water seals 4*, 4ª, in which the valve casing
is sealed and also one edge of the valve, and two inner water seals 4, 4b, in which
the other edge of the valve is sealed. 5 is the valve itself being any suitable shell,
preferably cast iron. 6 is the operating lever, pinned at its lower end to shaft 7
which oscillates in suitable bearings in the bed plate. Pinned to said shaft 7 and
on each side of the valve are links 8, 8, slotted at their upper ends to receive
pins 9, 10, cast integrally with the valve. 11 is a counter-shaft to shaft 7
supported in suitable bearings in the bed plate and like shaft 7 below the water
seal 12, 12, are links pinned to said shaft and slotted at their upper ends to receive
pins 13, 14 cast integrally with the valve. 15 is a coiled spring pivotally
connected with pin 16 on operating lever 6 and also with pin 17 on bracket 18,
secured to shell of valve chamber. 19, 19 and 20, 20 are bolts and nuts for
tightening the spring. 21 is a head block which receives pin 17 and through which
bolts 19, 19 pass.
The operation of the device is apparent. As the lever 6 is moved to the left
from the position seen in Fig. 1, spring 15 will assist in lifting the valve from its
water seal and the valve will be moved laterally to the position shown in dotted
lines in Fig. 1, dropping into the second water seals and reversing the flow of the
gas or air. In the same manner the valve will be returned to its original position.
The depth of the water seal is such that the inevitable warping of the valve or its
seat will not separate the valve from its seal and no leakage will take place.
the same time shafts 7, and 11 are beneath the water line and thus leakage is
prevented pust the shaft.
At

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of a valve seat provided with water seals, an oscillating
reverse valve adapted to be shifted from one set of seals to the other, a shaft
immersed in the water seal and links connecting said shaft with the valve.
2. The combination of a valve seat provided with water seals, a valve chamber
resting in certain of said seals and an oscillating reverse valve adapted to be
shifted from one set of said seals to the other.
3. The combination of a valve seat provided with water seals, an oscillating
reverse valve seated in said seals, an oscillating actuating lever for said reverse
valve, an oscillating shaft immersed in the water seal and moved by said lever and
connections from said shaft to the valve.
4. The combination of a valve seat provided with water scals, an oscillating
reverse valve seated in one set of said seals, an oscillating actuating lever for said
reverse valve, an oscillating shaft immersed in the water seal and moved by said
lever, connections between said shaft and the valve, a second countershaft parallel
with the first and also immersed in the water seal and connections between said
shaft and the valve.
DL: 1- 1
1007
BOULT & WADE,
Agents for the Applicant.