Carbureter-Regulating Mechanism. Page: 2 of 3
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UNITED STATESPATENT OFFICE
JOHN 'C. CA8?EN1TER, .P HOUSTON HEIGHTS, TEXAS.
Sieiication of Letters Patent.
Patented Oct. 21,1913.
0oGtfuuatio of -pdcationi Serial- No. 4B982, filed April 15,- 1909. This application filed October 12,
1912. Serial No. 725,357.
To all whom it may cancer :
Be it known that I, JOHN C-. CABPEMER,
.a citizen of the United States, residing at
Houston Heights, in the county of Harris
5 aid 'State of Texas, have invented certain
new and useful Improvements in.. Carbu-
reter-Regulating Mechanis rn of which the
following is a specification.
My invention relates to new and useful,
10 inmprovements in carburetor regulating
The object of the invention is to auto
matically regulate the air and fuel valve of
a carbureter, according to the speed of the
15 engine and the load being carried thereby.
This device was included in my applica-
tion for .patent on carbureters, filed April.
15, 1909, Serial Number 489,982, and which
2was declared abandoned March 4, 1912, this
20 application being filed as a continuation of
that application. .
With the above and other objects in view,
the 'invention has particular relation to cei
tain novel features of construction and op
25 eration, an example of which is given in
this specification and illustrated in the ac-
companying drawing which shows a sec-
tional side elevation of .a carbureter with
the regulating mechanism attached thereto,
30 Referring now more particularly to. the
drawing, the numeral 1 refers to the carbu-
reting chamber having a fuel inlet 2 and. an
air inlet 3, the former of which is controlled
by the needle .valve 4 which is threaded
85 through the upper portion 5 of the carburet-
ing chamber and whose lower free end pro-
jects into the fuel inlet, and, the latter of
which is controlled by the valve 6, which is
pivoted in the air inlet and may be opened
40 and closed by the manipulation of the arm 7..
The throttle 8 of the carburetor is con-
trolled by the throttle valve 9 by the ma-
nipulation of the arm 10, carried by the
stem of said valve, and regulates the quan-
45 tity of mixture delivered to the engine.
The needle valve 4 may be adjusted up
and down by turning the same and the fuel
inlet thus opened or closed. This valve
may be turned by the manipulation of the
50 arm 11 carried thereby.
The throttle rod is indicated by the nu-
meral 12 and one end thereof is pivoted to
the arm 10. This rod is manually operated
and the throttle valve thus opened and
55 closed and the rod may be set in the ordi-
nary manner at any point of the throttle
opening. Pivoted to the throttle rod is a
floating- lever 13& A link 14. connects the
lever 13 to the free end of the arm 11.
A governing device 15, responsive to en- .o
gihke speed, has been provided which is se-
:euued to the machine framee by means of
lamp 16. The governor stem 17 slides- in
the hollow stub shaft 18, which rotates in
the bearing 18', carried by the plnpp 6, 65
and is attached to the free end of the lever
13.. The governing device is driven by the
engine through the pulley 19, rigidly
mounted on the shaft 18. The free end of
the arm 7 is connected to the floating lever 70
13 by means of a-link 20, one end.of.which
'is 'pivoted to said arm 7 and the other end
of which is pivoted to the' floating lever 13.
The governor stem moves in harmony
with the changes in engine speed, while the 75
throttle rod is moved in harmony with
changes in engine load. The floating lever
being hingedly connected with the governor
stem and throttle rod operates upon them
alternatively as fulcrums and is, therefore, 80
responsive to changes in engine speed and
load... The 'air and fuel valves, 6 and '4, are
connected with the 'floating lever and op-
erate also in response to changes in engine
speed and load. 85
In operation, the throttle isopened4by:the
throttle rod which operates 'the. floating le-
ver 13, which in turn operates 'on' the. gov-
ernor stem 17 as a fulcrum, so as to open
the fuel valve in greater proportion than 90
the throttle and the air valve in less propor-
tion. This gives a richer mixture for start-
ing. . As soon as the engine takes up. its
cycle,, the governor stem advances and op-.
erates the floating lever which operates .95
upon the 'throttle rod as a fulcrum, partially
closes the fuel valve through the link 14
and further opens the air valve through the
link 20, giving qualitative regulation of the
mixture as the speed and load vary. .100
What I claim is:-
1. In a device of the character described,
the combination with a fuel inlet; an air in-
let; a carbureting chamber connected with
and receiving from said fuel and air in- 105
lets; an air valve for controlling said air
inlet; a mixture throttling means; and a
governing means, responsive to engine
speed, adapted to operate said air valve; of
a lever operatively connecting said throt- 110
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Carpenter, John C. Carbureter-Regulating Mechanism., patent, October 21, 1913; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth853864/m1/2/: accessed May 22, 2019), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.