US1672209A

US1672209A - Priming device

Info

Publication number: US1672209A
Application number: US664478A
Authority: US
Inventors: Morris J Goldberg
Original assignee: Fairbanks Morse and Co
Current assignee: Fairbanks Morse and Co
Priority date: 1923-09-24
Filing date: 1923-09-24
Publication date: 1928-06-05
Anticipated expiration: 1945-06-05

Description

Patented June 5, 1928. 'I I y UNITED STATESl PATENT OFFICE.

MORRIS J. GOLDBEBG, OF BELOIT, WISCONSIN, ASSIGNOB TO FAIBBANKB, HORSE C0.,

OF CHICAGO, ILLINOIS, A CORPORATION OF IIJLINOIS.l

rn'IivirNc DEVICE, Application mea september' 24, ma .serial NQ. 664,478;

My invention relates to improvements in a stop pin preventing the closure'of tube priming devices for internal combustion enby check valve n gines, and has for its object a device'which. I may, however, dispense with by-pass may be peimanently attached to the engine,v (16) and passage and permit the disis'eas'y and simple of operation and simple charge from cup (1) to pass into cup (22) 60 of manufacture. 1 preferably perforated and attached below My invention willlbe best understood from tube (10) and preferably situated in scavthe following description and drawing, enger passage n showing its application to a horizontal en' When the engine is turned over by hand 10 gine of the two-cycle type employing crank and starting with the iston in its extreme o5' case compression. Though my invention crank end position (18d), as it moves toward consists largely iii the construction andv ar the head end it tends to produce a vacuum rangement of parts hereinafter described and in the crank case, drawing 4atmospheric air particularly pointed out in the claims, yet in through the automatic valve usually pro- 15 I do not limit my invention to the precise vided. his vacuum also extendslthrough 70 ferm or construction of parts shown or the the equalizing tube (16)., tube (10) and several parts thereof, inasmuch as various Chamber (6). Atmospheric air will, at this alterations ma" be made without changtime, enter through opening (2) in the cu ing the scope o my invention. Cover through tube (7) and chamber (6%)y 20. In the drawing Fig. 1 is a view, partly and will tend to carry any liquid that has 75 in section, showing a preferred forni of my dropped through the open needle valve (3) invention; and Fig. 2' is a view of a modified dOwn past the check valve, the tube (10) and form of my inventionl which may be used. thrOugh the retardant means (13).

In the drawings (1) is a cup adapted to hold When on the further rotation of the en- 26 a small supply of gasoline or other desirable gine the piston returns' and crosses open- 8ov fuel which may be introduced through a 111g (14), its 1n position (19), the pressure hole (2) in the @over 0r by any other @0nwhich has been developed in the crank case venient means. In thebottomof this cup the crankward movement of the iston is anopenng (3) Shown Closed by needle will vfill the equalizing passage (16 vand valve v(4), preferably operated by a handle the VertlCl pSSge and (10) UP t0 85 (5) outside. Below the valve control outthe Check (9)5 Wh'lCh Wlu beheld CIOSed by l let (3) there may be a small passage or the pressure. This pressure is suiicient to Chamber (6) vented t0 the 'atmosphere by introduce a charge of air into the cylinder tube (7). In the outlet (8) from chamber which is then near atmospheric pressure,

(6) is a check valve (9) arranged to prethe exhaust opening being in comniunica- 90 vent pressure or gases passing upward tion with the atmosphere. The liquid from through this kopening into chamber (6). tube (111), miXed With air, forms an eXplo- Below this check is a tube (10) opening into sive mixture, which on high compression a larger tube forming a chamber (11); At fires veryreadily. After the engine is the lower end of tube (11) is a restriction started, the priming device may be cut out 95 (12) having a smaller opening (20) through 1n the manner shown or .in any other suitit. This restriction serves the purpose of able manner. y 'p e y` retaining some retarding material (13) By locating the auxiliary port 14 in the which' may be of fibrous material like mincylinder wall of the engine into or in close eral wool or it may be as indicated in our proximity to the air port 15 it will be seen 100 sketch `a piece of flat `metal bent up into a that I have provided means for preventing spiral shape. Below outlet (20) the pasfuel from being sucked back into thev crank sage enters the cylinder at auxiliaryvfuel caseof the engine. The port 14 will be evif supply or priming port (1a),'this port comdently uncovered for only a" very short 5o ing into or in close proximity to the vair inpart of the beginning of the upward 105 let port (15). Below the check valve (9) stroke of the piston and very little of there is connected into this passage a pres-v the gases `in the vcylinder'V will be' sucked sure equalizingv tube or by-pass conduit back through the chamber 11, because (16), this being connected also into the the port is only open for a short inter- 5 scavenging air passage at (17). Pin (21) is val of time and vonly when thek crank 110 priming fuel, and comprising means for case suction is at a minimum and practically negligible. Fuel is further prevented from entering the crank case by the use of tube l0, Which projects past the opening of conduit 16 and down vinto chamber 11,: Whilel show chamber ll,A it is evident this cham.- ber may be omitted and that the by-,pass conduit 16 may be formed in a continuous piece so as to connect with priming port 14. It is evident that while I describe my device asbeing applied to an internal combustion engine forpriming purposes it may be employed in such an engine in any case where any auxiliary' fuel feed device is advantageous. F or example, under certain conditions, particularly at no-load, it is difficult to keep an engine ruiming efficiently on the heavier hydro-carbone, due to the lowering in temperature of cylinder'walls, combustion chamber', etc. In such a case my device could, be employed with efficiency and economy as an auxiliary` fuel feeding device for idling purposes I do not with to be limited. in the application of my device, therefore, to

' purposes only.

claim:

l. In an auxiliary fuel feed device adapted to be applied to an internal combustion engine having crank case compression, a bypass conduit comprising means limiting the lOW of fuel into the crank case, one end of the conduit being in direct communication with a cylinder' of the engineand the other end in communication with a scavenging passage of the. engine, said conduit being adapted thereby, to utilize suction in said passage for fuel intake to said conduit, and to utilize pressure in said passage for expelling the fuel to the cylinder.

2. In an auxiliary fuel feed device adapted to be yapplied to an vinternal combustion enginehaving crank case compression, a' bypass conduit adapted to deliver an auxiliary limiting the How thereof to the crank case, one-end of the conduit being in direct communication with acylinder of the engine and the other end in communication With the scavenging conduit of they engine, and means adapted to utilize a suction in said scavenging conduit for supplying fuel to said by-pass conduit.n

3. In an auxiliary fuel feed device adapted to be applied to an internal combustion engine having crank case compression, a bypass conduit having one end terminating in a cylinder of the engine and the other end in communication with the scavenging air passage of the engine, means adapted to utilize a partial vacuum in said passage for supplying fuel to said by-pass conduit, and fuel retarding means in said by-pass conduit, the conduit being so constructed and disposed .as to limit-the flow of fuel to the crank case. 4. In an auxiliary fuel feed device adapted to lbe applied to an internal combustion engine having crank case compression, a bypass conduit having one end in communication with a port in the cylinder of said engine'and the other end-in communication with the scavenging wpassage of the engine,

whereby a suction in said passage is utilized to said conduit, and means flow of fuel into the crank ed tobe applied to anv internal combustion engine having lcranky case compression, a bypass conduitphaving one end adapted to be placed in communication witha port in the cylinder of said engine and the other end adaptedto be placed incommunication with the crank case of the engine, means for supplying fuel to said conduit whereby fuel mayv be drawn into said conduit byY crank'case suction anddriven out of said conduit into .said cylinder by crank case pressure, and

means for limiting the flow'of fuel into the" crank case.

6. In a gas engine, a ley-pass conduit inV communication with the crank case and en tering the cylinder between the scavenging port and the headend of the cylinder, an auxiliary fuel supply adapted to augment the main fuel light-load operation of the engine, the auxiliaryofuel being introduced to said by-pass conduit by crank case suction, and a valve controlling said fuel supply, the fuel supply connection and conduit being so Vdisposed as to limit the flow of fuel into the crank case. In a gas engine having a by-pass conduit in communication with the crank casel and entering the cylinder between ythe scavenging port and the head end of the cylinder, a fuel supply connectedy tosaid by-pass vconduit, a valve controlling' said fuel supply, said valve being adapted to be-ac'tuated byV crank case suction to deliver fuel 'to said conduit, and means associated with the fuel supplyv and conduit for preventing the flow of fuel into the crank case. 4 y

8. In a priming device, a by-pass conduit in, communication with the crankcase of an engine and connected to the cylinder ofthe engine between the scavenging port and the head end of the cylinder, a `fuel supply means operative under the influence ofa periodic crank case suction, fuel means, means for back to the 'crank ling the admissionL limiting the flow of fuel case, and a valve controlof fuel into the'by-pass.

supply during 'priming' and retarding l iio izo

9. In combination with an auxiliary fuel feed device adapted to augment the normal running fuel supply for an internal combustion engine, a cylinder yhaving. an auxiliary fuel port therein, a piston adapted to open and close said port, a scavenging air passage, a by-pass conduit between said passage and said port, anda fuel supply in said conduit, comprising means retaining the fuel from iso the scavenging air passage, said conduit bein adapted to receive a fuel charge under in uence of a periodic suction inl said air passage, and adapted to utilize a pressure in said passage to expel the fuel fromy said conduit to the cylinder. 1

l0. In combination With an' auxiliary fuel feed device for an internal combustion engine, a cylinder having an auxiliary priming ort therein, a crank case, a piston adapted to open and close the port, a bypass conduit between the port and the crank case, means for introducing a priming fuel in said conduit, and a tortuous passage for the fuel, through a portion'of said conduit.

l1. In combination With an auxiliary fuel feed device for an internal combustion engine, a cylinder having an auxiliary priming port therein, a crank case, a piston adapt-l ed to open and close ythe port, a by-pass conduit between the port and the crank case, and valve controlled means for supplying fuel to said conduit by crank ycase suction.

12. An auxiliary fuel feed device adapted to be removably positioned in the scavenging YWay air passage of an internal combustion engine, comprising a body having a fuel passagen therein, and a spiral fuel distributing surface adapted to be positioned in the line of flow of the scavenging air, the fuel passageway being so disposed and connected with the engine as to limit the fiow ofthe fuel tothe crank case through the scavenging air passage.

13. Anauxiliary fuel feed device adapted to Vbe removably connected to a priming port adjacent the scavenging air passage o an internal combustion engine, comprising a f member havin valve in said uel passage, and a fuel distributing surface, the fuel feed device being in air under pressure for introducing a priming fuel engine, to augment the normal running fuel, and the device being further adapted to receive a charge of the priming fuel under influence of a periodic crank case suction.

MORRIS J. GOLDBERG.

a fuel passage therein, al

for light-load operation of the radapted to divert a portion of the scaveng-v v