US 1292613 A
Description (OCR text may contain errors)
DEVICE FOR PREVENTING BACKFIRING.
APPLICATION FILED JUNE 23. [ENG- Patented Jan. 28, 1919.
2 SHEETS-SHEETI 1mm ess/e L. KESSLER.
DEVICE FOR PREVENTING BACKFIRING.
APPLICATION mgn JUN E 23. 1916.
1,292,613, Patented Jan. 28, 1919.
2 SHEETS-SHEET 2.
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To all whom it may concern:
Be it known that I, LoU1s KEssLER, a cit zen of the United States residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Devices for Preventlng Backfiring, ofwhich the'followin'gis a description.
My invention belongs to that general class use in connection with internal combustion engines, and more articularly is a device forpreventing bac firing of theengine into the carbureter. The invention has amo its objects the production of a device o the kind described that is simple, safe, efficient, compact, and -sat1sfactory, that may be used wherever found applicable. As before mentioned, it is espe-"- 'cially designed, and has particularly .as an object preventing. the engine from back firing into the carburetor, but which will not mterfere with the passage of the mixture from the carbureter to the engine, nor afeet the efliciency of the charge. Many other objects and advantages of the device herein illustrated will be obvious to those the art from the disclosure herein made.
To this end my invention consists in the novel construction, arrangement and combi-' nation of parts herein shown and described,
and more particularlypointed out in the claims.
In the-drawings, whereinlike reference characters indicate" like or corresponding parts, Y
Figure 1 is a view in elevation of anengine carburetor with one of my devices applied thereto; L
Fig. 2 is a sectional view through my pre ferred form of device go Fig. 3 is a sectional view taken substantially on line 3, 3 of Fig. 2;
Fig. 4 is a sectional view taken substantially on line 4, 4 of Fig. 2, and
Fig. 5 is a perspective view of the devicepartially disassembled.
Referring to the drawings, in which the preferred form of my device is shown, 1 repranged between the engine and carburetor,
resents any type or style of internal combustion engine, and 2any type of carbureter, it being understood that the particular type engine and carbureter shown are merely for illustration. My improved device is ar- Specification of Letters Patent.-
Patented Jan. 28, 1919.
1916. Serial No. 105,393.
so that the charge may bedrawn freely from the carbureter into the en e, butthe ene prevented from back ring at anytime into the carbureter. sists of a tubular shell 3 provided with the ends 4 and 5 arranged for attachment in the system between the carbureter' and engine. Arranged within the shell or casing 3 is a tubular part or inner shell 6, the same being formed with supporting or spacing ribs 7, so that spaces 8 are formed betweenthe -two parts, the shell 3 and part 6. The part "6 is formed with openings 9 connecting the spaces 8 with the tubular opening in the end 4, and with a flanged portlon 10, by means ofwhich the tubular part 6 may be secured in place. As most clearly shown in Fig, 2, part 6, which is tubular, has a bore slightly greater than the intake opening in part 4, so that a shoulder 11 is formed. A washer, 18' of fiber or equivalent is preferably arranged as shown, forming a valve seat.
The device shown con- OF CHICAGO, ILLINOIS, ASSIGNOR TO NUN-EXPLOSIVE DEVICE CO. INC, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.
'Slidably arranged within'part 6 is a suitably formed valve 12, which is provided with a stem 13, the free end of which is carried by the member 15. On the stem 13 and abutting against the valve, and against the part 15, is arranged aspring 16, the same tendin to norma 1y maintain the valve in the clos position shown in Fig. 2.
' In operation the end 4 is connected with the carburetor, and end 5 with the engine, it being immaterial whether the device is installed as shown or vertically, and as the engine draws in a fresh charge,:the same enters the part 4, the valve 12 being drawn back'so as to oplen the ports 9, and the charge passes 'throug the ports 9, through the spaces 8, past the part 15, and out through the end 5, into the intake manifold, to'the engine. The valve is so arranged that it works freely under the suction of the engine, so. that the efiiciency of the engine is not in any way impaired. In case the engine back .fires, the same fires into the shell 3, but
owing to the spring 16 and the pressure ofv the gases, yalve 12 is shut and any flame prevented from reaching the carbureter.
The setting fire to. the combustible in the 0 the case of automobiles, particularly where the engine is covered with oil or there is oil in the vicinity of the flame. With the obvious that various immaterial modifications may be made in the same withoutde parting from the spirit of my invention;
hence I do not wish to beyunderstood as limiting myself to the exact orm, construction, arrangement and combination of parts herein shown and described, or uses mentioned.
e What I claim as new and desire to secure by Letters Patent is 1. A device of the kind described, comprising an outer shell provided with an inlet and an outlet, an inner shell open at both ends and supported in spaced relation to the outer shell and alined with the inlet, in combination with .a valve within the inner shell cooperating with the inlet, arranged to prevent reverse movement therethrough, and resilient means for normally holding said valve in position to close the inlet.
2. A device of the kind described, comprising an outer shell provided with an inlet and an outlet, and an inner'shell open at both ends supportedin spaced relation to the outer shell andhavingformed therein port openings near the inlet, in combination with a valve cooperating with the inlet and said port openings to regulate the passage through the inlet to the ports, means on the outer shell for guiding the valve in its movement, and resilient means positioned between the valve and the guiding means for normally holding the valve in position \to close said port openings. i
3. A device of the kind described, am-
prising an outer shell, one end having an inlet opening therethrough and the other end having an outlet opening therethrough, an open-ended inner tubular shell supported in spaced relation to the outer shell and having port openings formed therein near the inlet, in combination with a sliding valve arranged within the inner shell formed to control the ports, a valve stem connected with the valve and extending through one open end of said inner shell, guiding means on the outer shell for the valve stem, and
resilient means positioned between the valve the inlet, in combination with a vaflve member, the front and rear faces of which are exposed to the action of the charges passing to or from the engine, said valve being slid-. ingly arranged within the open-ended inner shell, resilient means for normally maintaining said valve in position to close the ports, and guiding means for said valve, substantially as described.
In testimony whereof, I have hereunto signed my name in the presence of two sub-- scribing witnesses. X
A LOUIS KESSLER.