Improvements in Certain Parts of Carburetters for Oil Engines.
Year: 1899

page_text: Improvements in Certain Parts of Carburetters for Oil Engines.
I, CHARLES THOMAS BROCK SANGSTER, General Manager of the Cycle Com-
ponents Manufacturing Company Limited, of Bournbrook, near the City of
Birmingham, do hereby declare the nature of this invention to be as follows:-
-
This invention has relation to parts of carburetters for oil engines, and princi-
pally to the mixing valves employed in connection with such carburetters for the
purpose of regulating the relative proportions of oil vapour and air in the
exposive mixture and for controlling the admission of such mixture to the motor.
The objects of the said invention are to simplify the construction of the apparatus,
to facilitate the fitting of the same to the carburetter and to combine with the
mixing valve, means for preventing the explosive mixture from "lighting back,"
thereby reducing the number of parts and simplifying the connections between
the carburetter and the engine.
66
The means heretofore employed for preventing "lighting back" consists of a
series of wire gauze discs, separated from one another by a number of interposed
metal rings, the whole being mounted in a gauze box" which is a separate
fitting arranged in connection with the vapour supply pipe of the motor, but
according to the present invention, the use of a gauze box is dispensed with, and
the gauze discs are removably fitted within the box or casing of the mixing
and vapour valves.
In carrying out one form of my invention, the casing or box of the valve is of
cylindrical form with open ends and is fitted at, and arranged to form, one of the
corners of the carburetter, which may be of any construction suitable for the
generation of vapour from light hydro-carbon oils. The fitting of the valve box
may be facilitated and the corner of the carburetter strengthened laterally by
providing the said box, both longitudinal and around parts of its circumference,
near the opposite ends, with webs or flanges against which portions of the sides
and top and back edges of the carburetter casing abut or take a bearing and are
soldered or otherwise connected thereto.
Near to one of the open ends of the valve box, its opposite walls are pierced
with a pair of holes, the upper one of which is open to the atmosphere and the
underneath one to the inside of the carburetter and through the latter the vapour
generated passes into the interior of the fixed box and is there mixed with air.
the proportion of which is determined by a valve or plug fitted within the said
open end of the box and rotated by means of a lever connected to a neck or stalk
and extending through a bearing nut or cap screwed into the mouth of the box.
The said plug is fully open at its inner end into the interior of the box and a
portion of the side is gapped or cut away and the size of the air passage is varied
by bringing more or less of the said gas coincident with the hole in the top of
the box.
The other end of the valve box is fitted with another lever-operated plug,

page_text: retained in position by a screwed-in bearing nut and open at its inner side to the
box, whilst its side is provided with a hole which is brought more or less coin-
cident with a pipe or passage leading from the side of the box to the motor and
thus provides a means for regulating the flow or supply of the explosive mixture
to the said motor.
:
Within the space between the two rotating plugs, the means for preventing the
lighting back of the mixture is fitted. This consists of a series of wire gauze
discs alternating with and soldered to a number of intervening metal rings, the
whole forming a detachable element which is slid into position within the valve
box, with its one end abutting against an internal shoulder and the other end
being separated from the contiguous valve plug, if desired, by a loose ring or
washer, whilst the adjustment of the several parts is effected by screwing in or
out of one of the bearing nuts provided outwards of the plug.
Dated this 15th day of June 1899.
Improvements in Certain Parts of Carburetters for Oil Engines.
I, CHARLES THOMAS BROCK SANGSTER, General Manager of the Cycle Com-
ponents Manufacturing Company Limited, of Bournbrook, near the City of
Birmingham, 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:-
This invention has relation to parts of carburetters for oil engines, and princi-
pally to the mixing valves employed in connection with such carburetters for the
purpose of regulating the relative proportions of oil vapour and air in the
exposive mixture and for controlling the admission of such mixture to the motor.
The objects of the said invention are to simplify the construction of the apparatus,
to facilitate the fitting of the same to the carburetter and to combine with the
mixing valve, means for preventing the explosive mixture from "lighting back,"
thereby reducing the number of parts and simplifying the connections between
the carburetter and the engine.
"
The means heretofore employed for preventing "lighting back" consists of a
series of wire gauze discs, separated from one another by a number of interposed
metal rings, the whole being mounted in a gauze box which is separate
fitting arranged in connection with the vapour supply pipe of the motor, but
according to the present invention, the use of a gauze box dispensed with, and
the gauze discs are removably fitted within the box or casing of the mixing
valve.
Figure 1 of the accompanying drawing represents, partly in elevation and
partly in section, my improved mixing valve fitted to the carburetter or vapor
generator of an oil motor.
Figure 2 is a transverse longitudinal section of the said mixing valve upon the
dotted line a.
Figure 3 is an end view of the casing or body part of the valve separately.
Figure 4 is an elevation of that side of the said casing from 'which the vapor
exit proceeds to the motor.
Figure 5 is a longitudinal section of Figure 4.
Figure 6 represents an elevation and an end view of one of the valve plugs, and

page_text: Figure 7 represents similar views of the other plug, which is fitted into the
opposite end of the valve body to that into which the plug Figure 6 is located.
Figure 8 is a separate sectional view of the gauze ring, which is disposed
within the casing of the valve between the plugs and is detachable therefrom for
cleansing and the like.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
In carrying out this form of my invention, the casing or box a of the valve
device is of cylindrical form with open ends a¹, a², and is fitted at, and arranged
to form, one of the corners of the carburetter b, which may be of any construction
suitable for the generation of vapour from light hydrocarbon oils. The fitting of
the valve box may be facilitated and the corner of the carburetter strengthened
by providing the said box both longitudinally and around parts of its circum-
ference, near the opposite ends, with webs or flanges a³, a4, against which portions
of the sides and top and back edges 62, of the carburetter casing abut or take a
bearing and are soldered or otherwise connected thereto.
Near to the open end a', of the valve box, its opposte walls are pierced with a
pair of holes, a, (see Figure 3) the upper one a, of which is open to the
atmosphere and the underneath one af, to the inside of the carburetter and
through the latter the vapor generated passes into the interior of the fixed box
and is there mixed with the air entering through the hole, the proportions of
air and vapor being determined by a valve or plug e fitted within the said open
end a, of the box and rotated by means of a lever connected to a neck or stalk c¹.
extending through a bearing nut or cap into a wormed part a, of the said
mouth, of the box. The said plug is fully open at its inner end into the
interior of the box and a portion of the side is gapped or cut away at 3, and the
size of the air and vapor inlet passages are varied by rotating the said plug so
as to bring more or less of the said gap coincident with the respective
passages a³, as, in the top of the box it being understood that when the gap and
bottom (which extends around a half of the circumference of the plug, is presented
equally to the two holes as in Figure 2) air and vapor are admitted in equal
proportions or thereabouts, and that on rotating the plug, as the one passage is
cleared the other is proportionally closed by the solid part of the said plug.
The other end a², of the valve box is fitted with another lever-operated plug e,
retained in position by a screwed-in bearing nut f and open at its inner side e¹,
to the box, whilst its side is provided with a hole e, which is brought more or
less coincident with an outlet nozzle or passage, leading from the side of the
box and to which a vapor supply pipe proceeding to the motor is connected.
This plug provides a means for regulating the flow or supply of the explosive
mixture to the said motor.
Within the space between the two rotating plugs, the device 1, for preventing
the lighting back of the mixture is fitted. This consists of a series of wire gauze.
discs h, alternating with and soldered to a number of intervening metal rings .
the whole forming a detachable element which is slid into position within the
valve box, with its one end abutting against an internal shoulder 10, and the
other end being separated from the contiguous valve plug. if desired. by a loose
ring or washer 7, whilst the adjustment of the several parts is effected by screwing
in or out one of the bearing nuts provided outwards of the plug.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
First In a mixing valve for use in connection with the carburetters of oil or
vapor motors, the employment within the interior of the valve casing, and within
the space between the rotating plugs which respectively govern the admission of
air and vapor, and the supply of explosive mixture to the motor, of a removable
device for preventing the "lighting back" of the said mixture, consisting of a

page_text: series of wire-gauze or other reticulated discs, alternating with, and connected to,
a series of metal rings or washers, whereby the employment of a separate and
intermediate fitting between the mixing valve and the motor for containing the
said lighting back prevention device; is obviated, substantially as described and
set forth.
Secondly-In a mixing valve for use in connection with the carburetters of
oil and vapor motors, providing the casing thereof with longitudinal and circum-
ferential flanges, against which the walls of the carburetter casing abut, whereby
the valve is utilized to strengthen the structure of the said carburetter, sub-
stantially as described and set forth.
CHARLES THOMAS BROCK SANGSTER,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.