Automatic Boiler-Feed Page: 2 of 3
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UNITED STATESPATENT OFFICE.
HARRY DENNY TWOMBLY, OF SOURLAKE, TEXAS.
AUTOMATIC BOILER-FEED.
No. 895,817. Specification of Letters Patent. Patented Aug. 11, 1908.
Application filed September 17, 1907. Serial No. 393,297.
To all whom it may concern: siderably shorter than the arm 9. The rock
Be it known that I, HARRY DENNY Twoi- shaft 7, in addition to its rotary movements,
BLY, citizen of the United States, residing at is adapted to have a limited longitudinal
Sourlake, in the county of Hardin and State movement and is provided at or near one end 60
5 of Texas, have invented certain new and with a valve or outer flange 10 adapted to
useful Improvements in Automatic Boiler- obtain a bearing against a seat 11 fitted in a
Feeds, of which the following is a specifica- recess of the wall in which the rock shaft 7 is
tion. mounted. Pressure within the chamber 5
This invention appertains to means for serves to hold the valve 10 in contact with 65
10 supplying steam boilers with water so as to the seat 11 so as to prevent escaping of any
prevent either over-feeding or deficiency in fluid from the chamber 5 into the cylinder 1.
supply with dangerous results, the means be- The valve casing 6 is provided with oppo-
ing automatic and controlled solely by the site coupling ends to which pipes 12 and 13
change of level of the water in the boiler. are attached, the pipe 12 having connection 70
15 The feeder comprises in its organization a with the water space of the boiler to be fed,
cylinder or receptacle having connection at and the pipe 13 leading from a pump or other
different levels with, respectively, the steam means for supplying water under pressure to
space and the water space of the boiler, a be introduced into the boiler. The valve cas-
float arranged within the cylinder or recep- ing 6 is provided with the usual inner dia- 75
20 tacle and controlled by the change of level of phragm or partition 14 having .a central
the water therein, and a valve mechanism opening surrounded by a tubular extension
actuated by movements of the float to con- 15 provided at one end with a valve seat 16.
trol the, supply of water to the boiler as the A valve 17 is adapted to close upward against
exigency may require, according to the the seat 16 and is provided with lugs 18 form- 80
25 movement of the float. ing guides arranged to operate in the tubular
For a full understanding of the invention extension 15 so as to guide the valve 17 in its
and the merits thereof and also to acquire a reciprocating movements. The valve 17 is
knowledge of the details of construction and provided with a central opening 19 having a
the means for effecting the result, reference valve seat 20 at its lower end for cooperation 85
30 is to be had to the following description and with a valve 21 adpted to or carried by a
accompanying drawings, in which: stein 22 arranged to operate in the opening
Figure 1 is a vertical sectional view of the 19 and provided a short distance from the
boiler feeder embodying the-"invention, the valve 21 with lugs 23 forming stops to limit
float and valve being in full lines; and, Fig. 2 the downward movement of the valve 21 and 90
35 is a detail view in perspective of the valve to engage with the valve 17 and effect unseat-
and adjunctive parts. ing thereof in the continued descent of the
Corresponding and like parts are referred float as the valve of the water in the boiler
to in the following description and indicated and in the cylinder or receptacle 1 descends.
in all the views of the drawings by the same A stop 24 projected upward from the bottom 95
40 reference characters. of the valve casing 6 is adapted to limit the
The cylinder or receptacle 1 may be of any unseating or downward movement of the
capacity, construction and shape, and is valves 21 and 17.
adapted to have its upper portion connected A float 25 arranged within the cylinder or
to the steam space of the boiler by means of a receptacle 1 is connected by means of a link 100
45 pipe 2 and its lower portion connected with 26 with the arm 9 so as to effect a rocking of
the water space of the boiler by means of a the shaft 7 and a reciprocating movement of
pipe 3. A base 4 fitted to the lower end of the valves 21 and 17 as the float rises and
the cylinder or receptacle 1 is provided with falls incident to the change of level of water
a chamber 5 and a valve casing 6, the two be- in the boiler and cylinder. The several 105
50 ing preferably separately formed and con- parts are so proportioned and arranged that
nected by means of screw threads. A rock when the device is coupled to a boiler to be
shaft 7 is fitted in one wall of the chamber 5 fed thereby and when the level of the waterand is provided at opposite ends with arms 8 is at a given point, the valves 17 and 21 are
and 9, the latter being arranged to operate in closed. It is to be understood that the level 110
55 the cylinder or receptacle 1 and the arm 8 lo- of the water in the boiler and in the cylinder
cated within the chamber 5 and being con- or receptacle 1 is the same, as the water level
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Twombly, Harry Denny. Automatic Boiler-Feed, patent, August 11, 1908; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512965/m1/2/: accessed April 24, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.