Valve Mechanism for Gas Engines Page: 2 of 3
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UNITED STATESPATENT OFFICE.
HAMILTON G. BLUMBERG, OF SAN ANTONIO, TEXAS.
VALVE MECHANISM FOR GAS-ENGINES.Specification of Letters Patent.
Patented May 27, 1919.
Application filed November 12, 1914. Serial No. 871,778.
To all whom it may concern:
Be it known that I, IHAMILTON G. BLUM-
BERG, a citizen of the United States, resid-
ing at San Antonio, in the county of Bexar
5 and State of Texas, have invented certain
new and useful Improvements in Valve
Mechanism for Gas-Engines, of which the'
following is a specification.
This invention relates to an improvement
l0 in valve mechanism for gas engines, and the
object is to provide an air cooling chamber
for maintaining the exhaust valve in a
cooled condition under all conditions of
operation.
15 The great difficulty encountered with the
engine of general use as applied to auto-
mobiles is that the exhaust valve becomes
very hot, and especially when the car is
driven on heavy roads ofttimes it is neces-
20 sary to grind the valves and seats after a
trip, because the valves will dot seat prop-
erly, due to the overheated condition to
which they have beer subjected.
This invention further consists in' other
25 novel features of construction and combi-
nations of parts, which will be hereinafter
fully described and pointed out in the
claims.
In the accompanying drawings:
30 Figure 1 is a vertical sectional view;
Fig. 2 is a top plan; and
Fig. 3 is a detail sectional view at right-
angles to the section shown in Fig. 1.
Fig. 4 is a detail view of the cam shaft.
35 A represents the engine cylinder, to which
is connected a head 1. The upper end of
the cylinder head is provided with an open-
ing 2, forming a valve-seat for a valve 3.
A valve stem 4 connected to the valve 3 is
40 slidably mounted in the head 1, and-is main-
tained in its seated position by means of a
spring 5, which surrounds the stem, and has
one end thereof mounted upon the head 1,
and the other terminal engaged by a washer
45 6 on the stem 4.
An air chamber 7 is formed above the
valve.3 and upper portion of the cylinder
A and beneath the head 1. Intake and ex-
haust valves 8 and 9 mounted in cages 14
so located on the head 1 open into the air
chamber 7. These valves are normally seat-
ed in the cages 14 for closing intake and ex-
haust ports 10 and 11. Valve stems 12 are
connected to the valves 8 and 9, and slide
s5 in the cages 14. Each valve stem 12 is en-circled by a spring 13, which has a terminal
mounted upon the cages 14, and the other
terminal engaged by a nut 15 on the stems
12 for maintaining the springs in. position'
for' normally seating the valves 8 and 9. 60
After an explosion, the valves 3 and 9
will be opened, and the valve 8 remain closed
so that the exhaust gases will pass from the
engine cylinder through the air chamber 7
and port 11 to the atmosphere. Upon the 6
completion' of the up stroke of the piston,
the exhaust valve 9 closes, and the valve 3
remains open.
The intake valve 8 will now open, moving
into the air chamber 7, so that the fuel may 70
enter the cylinder A, and upon the comple-
tion of the downstroke of the piston, the
valves 3 and 8 will close.
In this manner, both valves 8 and 9 are
maintained in a cooled condition, and the 75
only time that the hot gases come in con-
tact with these valves 8 and 9 is when the
gases pass from the engine cylinder, the
main valve 3 being the valve which is sub-
jected to the hot gases, and while it may 80
become heated, due to the explosions which
take place in the engine cylinder, the seat-
ing of this valve will not affect the opera-.
tion of the intake and exhausting of the
gases as would be true if either the valves 85
8 or 9 were in a position to be subjected to
the influence of the hot gases.
It will therefore be seen that provision
has been made for maintaining these valves
in a practically cooled condition at all times, 90
as the chamber 7 will prevent the hot gases
from coming in direct contact with these
valves excepting as the gases are discharged
through the exhaust port 11 upon the open-
ing of the valves 9 and 3. 95
Both of the valves 9 and 3 are of course
cooled by the intake charge through the
port 10.
I claim:-
1. A gas engine comprising a cylinder. 100
having an explosion chamber at one end
thereof a reservoir in direct communication
therewith, a valve controlling an opening
between the explosion chamber and the res-
ervoir, said reservoir provided with intake lob
and exhaust ports and positively actuated
intake and exhaust valves for opening and
closing said intake and exhaust ports, said
valves adapted to open inwardly and against
spring tension, and so timed as to be posi- 1101,304,735.
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Blumberg, Humble G. Valve Mechanism for Gas Engines, patent, November 12, 1914; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth1258249/m1/2/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.