Valve Mechanism for Carburetors Page: 2 of 4
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATESPATENT OFFICE.
WILLIAM S. GUTHEIE, OF TERRELL, TEXAS.
VALVE MECHANISM FOR CARBU3ETEES.
1,029,606. Speoifcation of Letters Patent. Patented June 18,1912.
Application Sled June 25, 1910. Serial No. 568,905.To all whom U may concern:
Be it known that I, WILLIAM S. (*UrHRIE,
a citizen of the United States, residing at
Terrell, in the county of Kaufman and
5 State of Texas, have invented a new and
useful Valve Mechanism for Carbureters,
of which the following is a specification.
The invention relates to improvements in
valve mechanism for carbureters for use on
10 internal combustion engines.
The object of the present invention is to
provide a simple, efficient and practical
valve mechanism, equipped with a fuel
valve controlling a fuel supply and operat-
15 ing with a short stroke of only sufficient
movement to supply the desired amount of
fuel and without affecting the draft of the
engine, whereby the fuel valve is prevented
from hammering its seat or interfering with
20 the free passage of the mixture of air and
fuel.
A further object of the invention is to
provide a valve mechanism, having a fuel
valve and provided with a fluid valve con-
25 trolling the opening of the fuel valve, and
having a constant suction controlled travel
unaffected by the amount of movement of
the fuel valve or any adjustment thereof.
With these and other objects in view, the
30 invention consists in the construction and
novel combination of parts hereinafter fully
described, illustrated in the accompanying
drawings, and pointed out in the claims
hereto appended; it being understood that
35 various changes in the form, proportion,
size and details of constru, pion, within the
scope of the claims, may. be resorted to
without departing from the spirit or sacri-
- ficing any of the advantages of the inven-
40 tion.
In the drawings :-Figure 1 is a vertical
sectional view of a carbureter including
valve mechanism, constructed in accordance
with this invention. Fig. 2 is a horizontal
45 sectional view on the line 2-2 of Fig. 1.
Fig. 3 is a similar view on the line 3-3 of
Fig. 1.
Like numerals of reference designate cor-
responding parts in all the figures of the
50 drawings.
In the embodiment of the invention illus-
trated in Figs. 1 to 3 of the accompanying
drawings, the valve casing is composed of
upper and lower sections 1and 2, the upper
55 section being of elbow formation and pro-vided at the lower end with an inwardly
extending annular portion 3, having in-
terior screw threads to receive a projecting
threaded portion 4 of the lower section 2
of the casing. The lower section is ex- 60
teriorly recessed at its upper end to receive
the lower end of the upper section of the
casing for arranging .the parts in flush re-
lation.
The valve casing may be modified in a 65
variety of ways, but in the accompanying
drawings I have shown only one form of
valve casing. The projecting portion 4 of
the lower section has an inner cylindrical
face and forms a cylindrical passage-way, 70
which is controlled by a fluid valve 5 of
circular form, provided with a vertical
tubular stem 6 and arranged to receive ver-
tical stem 7 of a fuel valve 8. The fluid valve
5 is provided at its periphery with a de- 75
pending exteriorly beveled annular flange
9, forming a tapering periphery and adapt-
ed when the valve is raised to provide an
opening for the passage of mixture to
the engine. The tubular valve stem 80
6 is provided with a depending ex-
tension 10, operating in a lower web
or spider guide 11, said guide being ar-
ranged in the casing below the fluid valve
and above the seat or upper end of the fuel 85
passage and said extension engaging a col-
lar 12 of the fuel valve to seat the same
against a valve seat 12a. The fluid valve
is held against rotary movement in the
guide by a pin 5a arranged to engage the 90
guide. By employing the lower central
tubular guide, which is arranged between
the seat for the fuel valve and the fluid
valve, the latter is enabled to operate with-
in the cylindrical portion of the casing with- 95
out actually touching the walls thereof, so
that the friction, which would result from
the peripheral contact and a peripheral
guide, is eliminated, and the sticking of the
valve is effectually prevented. Also the 100
noise, which is sometimes caused by periph-
eral guiding means, is prevented. The
valve seat 12a, which is arranged at the
upper end of a vertical fuel passage 13 and
which forms a projecting nozzle, is pro- 105
vided with a reduced threaded portion 14,
which engages an interiorly threaded socket
or recess 15 at the upper end of the said
passage. This enables the valve seat to be
readily removed and replaced, but the valve 110
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Guthrie, William S. Valve Mechanism for Carburetors, patent, June 18, 1912; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512389/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.