US1454929A - Heating primer - Google Patents

Description

2 Sheets-Sheet 1 H. G. IRWIN HEATING PRIMER 1211601 June 15,1920

m 1 G a w m H. G. IRWIN HEATING PRIMER May 15, 1923.

i 2 Sheets-Sheet 2 Filed June 15, 1920 Patented May 15, 1923.

UNITED STATES HERBERT G. IRWIN, OF FLOYDADA, TEXAS.

HEATING PRIMER.

Application fiIedJune 15, 1920. Serial No. 389,217.

To all whom it may concern:

Be it known that I, HERBERT G. TRWIN, citizen of the United States, residing at Floydada, in the county of Floyd and State of Texas, have invented certain new and useful Improvements in Heating Primers, of which the following is a specificatlon.

This invention relates to a heating pr mer for starting cold ,internal combustion engines.

The invention provides a primer of th s character in which an electric fuel heater 1s attached in combination with the vacuum tank of the fuel feed system and serves to heat an initial quantity of fuel for startmg purposes, such fuel to be drawn into the ntake manifold of the engine by the suction created when starting.

A further object of the invention is to provide a fuel heater which is electrically energized from the starting battery of a motor vehicle and is provided with a valve for regulating the outlet of the heated fuel going to the engine and at the same time controlling the connection of the primer with the fuel feed system.

I am aware that previous heating primers have been devised and patented, but thepres- 'en't invention differs in principle from previously known devices in that the fuel in the primer is regulated by the quantlty of fuel in the gravity feed compartment of the vacuum tank. Y

*In the drawingsf Figure 1 is aside elevation'of an internal. I o

combustion engine mounted in a motor vehicle and having the present invention applied thereto. Figure 2 is a vertical lOIlgltlldlIlfllSBCtiOIl through the switch and valve controlling means.

Figure 3 is a transverse section on the line 33 of Figure 2..

Figure 4 is a longitudinal'vertical section r through the heating chamber.

Figure 5 is a similar section through the heating element. v

Figure 6 is a" section on the'l'ine 66 of Figure 5.

In detail:

"The invention, as herein shown, is asso- I ciated with an'internal combustion engine A of a motor vehicle, the cowl B of the body cated at F- and the carbureter at G.

I assembled; thereof, the cowl board C, dash D,-and the The main fuel feed line 1 connects with the vacuum tank E as shown at 2 and said vacuum tank is vented by a suitable connection 3 in the usual manner. Adjacent the outlet at of the vacuum tank is a T 5 connected with the said vacuum tank outlet and with the fuel supply line 6 to thecarbureter G. The

additional'branch 7 of the T 5 is connected with a short nipple 8 which is connected in turn with an elbow 9 of the primer cylinder 10 The upper end of the primer cylinder 10 carries aca-p valve 11 which will belater described but one side of this cap valve is connected by a short length of tubing 12 with the-opening 13 in the said vacuum tank E, while the other end is connected by a pipe 14 to the intake manifold F as indicated at 15. This arrangement forms the usual commun'ication, under normal conditions, between the intake manifold and the vacuum tank for drawing the fuel through the main supply line 1, to the vacuum chamber of the vacuum tank.

However, the cap valve 11 is so constructed that communlcation may be established by .means of a valve element 16 of the turning plug variety with the vacuum tank and the manifold or with the interior of the primer cylinder 10 and the manifold] for withdrawingand feeding intothe manifold the contents of the primer cylinder. The turning plug 16 is passaged as at 17 and is tapered to fit in the tapered bore of the valve cap 11 which is threaded onto the cylinder lO as indicated at 18, the valve being held in place by the washer" 19 and screw 20. At one end thevalve being carries the operating arm 21 the valve, carries the operating arm 21 held n place by a nut 22 and said arm is held in the proper position for establishing'com- BR1111051131011 only between the vacuum tank and inlet manifold by a coil spring 23 having a hook 24 engaging a pin 25 carried by a lug 26 of a band 27 encircling the primer cylinder 10. The lower end' of the primer cylinder lO is closed by the'cap 28 connecting withthe elbow 9. b

A tubular member29 having a threaded end 30 screws into the passage in the cap valve 11 and is adaptedto extend down into the primer chamber 10, when the primer is This tubular member 29 carries a perforate end 30 which issurroundedby the insulating strips 31 notched as shown in Figure 1, and having the configuration, in transno i verse section, shown in Figure 6. These parts are secured by metallic fusion at the bottom and held in place over the fused end of the tube by the rivet'32. Members 33 hold the insulating strips at the top. Wrapped about the insulating strips, [as shown in Figs. 4 and 5 is a heating element 34, the convolutions of which seat'in notches 35 of the insulating member. One end of the heating element is connected to a binding post 36 which is insulated from the cap 10-by va suitable insulatingbushing 37 and. washers to the level of the fuel in the gravity chamber of the vacuum tank E. Also it will be apparent that if the heating coil or element 34 is energized by the closing of a suitable switch the result will be that the gasoline or other fuel within the primer cylinder 10 will become heated and partially vaporous so that the opening of the valve by turning the valve element 16 so that communication is established between the intake manifold 15 and the primer cylinder will result in a certain amount of vaporous and heated fluid fuel flowingto the intake manifold 1*. This will be'particularly true when :the engine is being cranked for startingas the suction on the intake manifold will then pullthe fuel out of the primer cylinder 10.

Mounted in the cowl board C-of the vehiole is a switch body 41 consisting of an 'insulation plug 42 surrounded by a casing 43 having a flange 44 by means of which the switch body is fastened to the cowl board 'G. The-insulation plug 42 is cylindricall-y bored as at 45 and receives a contact bushing dividedv into halves .47 and 48 spaced from each other as shown so that'there is 'no electrical contact between the two. Each of these bushing halves 47 and 48 is connected with its respective binding post 49 and 50 which are suitably connected with the wires leading to the heating element of thetprimer and battery. Mounted for reciprocation Pin the bore 45 of the insulating body 42'of the switch is a plug 51 which carries the con- ,and the insulationbody 42 and such plug is held in place by a cap screw 57 slottedv as shown at 58 to accommodate a screw driver and also slotted to permit an operating element'59 to engage the plug for movement of the same. This operating element reciprocates in a passage formed parallel to the axis of :the switch body and integral with the casing 43 as indicated at 60. The operating element is connected-by a link 61 with the arm 21 for moving the valve plug 16 and said operating element "carries an abutment 52 whichenga'g es with the insulation'plug 51 for moving the spring lingers 53'to form a con tact with the two bushing halves 47 and 48. The operating element or member 59 1s notched as indicated at 63 to engage with the pin 64 to hold the switch plug in the connected position when desired.

In using the :primer, .the operator of the vehicle just as .he .is about to start the car pulls the *opera'tingmember 59 out 'by grasping the ring 65 withthe result that the heating-coil in the primer cylinder is energized -=ber, means for admitting fuel to the chamber at the end opposite the :said valve to flow over the heating element, and means :for energizing said heating element.

2. In a primer for internal combustion-engines, a chamber, a cap-closing the chamber at one end, a discharge pipe depending from the cap into the chamber-and opening at its lower end into the chamber, a valve upon the cap controlling flow throughsaid pipe, and

' a heating element carried by the pipe.

3. In a primer for internal combustion engines, a chamber, va cap closing :the chamber at one end, a discharge pipe depending from the cap into thechamber, a valve :upon the cap controlling flow through said pipe, a perforate member mounted upon the lower end of said pipe, insulating strips secured about said perforate member, and a heating element mounted ,upon said strips.

4. The combination with an internal combustion engine, a subsidiary vacuum fuel tank, and a suction pipe connectin thetank with the engine intake manifol whereby fuel will be drawn into the tank, of a fuel heating device fed from the tank and con- .nected with said pipe whereby heated fuel may be drawn into (said manifold through said pipe.

5. The combination with .an internalcom- "bustion engine, a subsidiary vacuum .fuel

rtank,:and a'snction pipe connecting the tank with the engine intake manifold whereby fuel will be drawn into the tank, of a fuel heating device fed from the tank and connected with said pipe, and a valve for diverting suction from the tank to said device whereby heated fuel will be drawn into the manifold through said pipe.

6. The combination with an internal combustion engine, a subsidiary vacuum fuel tank, and a suction pipe connecting the tank with the engine intake manifold whereby fuel will be drawn into the tank, of a fuel heating device fed from the tank and connected with said pipe, a valve for diverting suction from the tank to said device whereby heated fuel will be drawn into the manifold through said pipe, and resilient means normally holding the valve in position establishing communication between the manifold and tank.

7. The combination with an internal combustion engine, a subsidiary vacuum fuel tank, and a suction pipe connecting the tank with the engine intake manifold whereby fuel will be drawn into the tank, of a fuel heating device connected with the tank whereby fuel will stand in said device at the level of the fuel in the tank, a connection between the device and said pipe, and a valve for diverting suctionfrom the tank to said device whereby heated fuel will be drawn into the manifold through said pipe.

In testimony whereof I affix my signature HERBERT G. IRWIN. [1 8.]

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