US2056550A

US2056550A - Pilot control means

Info

Publication number: US2056550A
Application number: US501836A
Authority: US
Inventors: Wild Alfred
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-12-12
Filing date: 1930-12-12
Publication date: 1936-10-06
Anticipated expiration: 1953-10-06

Description

A. WELD 2,56,55

PILOT CONTROL MEANS Fiid Dec. 12, 1930 s sheets-sheet l 0a. 6, 1936. A. WILD" PILOT CONTROL MEANS Filed Dec. 12, 1930 3 Sheets-Sheet 2.

PILOT CONTROL MEANS 3 Sheets-Sheet 3 Filed Dec. 12, 1930 Patented Get. 6, i936 2&56550 PEO'IL CONTROL MEANS Alfred Wild, Milwaukee, Wis. Application December 12, 1930, Serial No 501,836

2 Claims.

. light will quickly ignite the same, and means is provided whereby to automatically increase the light of the pilot so that it will reach the burner when the fuel is turned into the burner.

Another object of the present invention is the provision of an improved pilot light attachment for stove burners, wherein the operating mechanism for the pilot light is operatively connected with each individual control for the burners, so that when any one of the burners is turned on for admission of fuel to the burner, the control for the pilot light will be automatically actuated for increasing the amount of fuel being fed to the pilot so that the flame of the pilot will readily reach the burner and ignite the same, and wherein continued movement of the individual control for the burner turned on will decrease the extra force for the pilot, so that it will resume its normal burning position.

A further object of the invention is the provisionof an improved device of the above characer, wherein a separate flash-head is provided for the oven burner, and means is provided for automatically igniting this flash-head when the control for the oven burner is actuated to admit fuel thereto, so that the flash-head for the oven will be ignited and in turn ignite the oven burner.

With the above and other objects in view, the invention consists in the novel. features of construction, the combination and arrangement of parts hereinafter more fully set forth, pointed out in the claims and shown in the accompanying drawings wherein:

Figure 1 is a top plan view of a gas stove, illustrating the application of my improved device;

Figure 2 is a sectional view on a line 2-2 of Figure 1;

Figure 3 is a detailed section on the line 3-3 of Figure 2;

Figure 4 is a detailed section on the line 4-4 of Figure 2;

Figure 5 is a detailed transverse section on the line 5-5 of Figure 1;

Figure 6 is a plan view of a slightly modified form of control for the pilots; and,

Figure '7 Ba longitudinal sectional view through the control device shown in Figure 6.

Referring more particularly to the drawings, i indicates the main portion of the stove having an oven 2 at one side thereof. Above the body portion I of the stove, I provide a plurality of burners 3,- each burner having connected there- 5 with a conduit 4 provided with the usual air mixer 5 and connected up with the main conduit 6 by means of the lateral branch portion 1 in which are arranged the control valves 8 adapted to be actuated by the hand wheels 9.

Each of the branch pipes l have attached thereto, a bracket Ill provided with an upstanding portion II which carries a headed guide pin l2. These guide pins l2 operate in slots I3 formed at spaced intervals in the reciprocating bar I4.

The valve stem of each valve has mounted thereon; a cam member If, which is adapted ta engage one end of an inclined finger i 6. It will be noted that the end of each finger adjacent its respective cam I5 is enlarged laterally to form an engaging surface, and due to'the fact that thefingers are disposed in an inclined position relative to the bar l4, the bar 14 will be reciprocated on the guide pins I2 when any of the several valves 8 are actuated. v 2

. The fingers it are secured to thebar l4 by means of screw members I! and are supportedin an inclined position by means of the stop pins l8. Arranged within the oven 2 is the oven burner i9 connected up to the main supply 'con- 0 duit 6 by means of a conduit 4', having a branch I in which is arranged the valve 8', the branch I being connected with the main supply conduit 6.

'is admitted to the burners 3. The cam I5 is also provided with alonger engaging nose as will be clearly noted in'Figure 2.

Arranged betweenthe conduit 4 for two of the burners 3 are, the conduits 20 and 2|. The conduit 20 has at its outer end a pilot housing 22, provided with radially positioned openings in the side walls thereof which are preferably on a line with the different burners 3, with the exception of one opening which is positioned in alignment with the inner open end .of an elon-- gated housing 23. From the showing in Figure 1, it will be noted that the pilot housing 22 has its openings opening toward the burners 3 and the housing 23. The conduit 28 is connected up with a nipple 24 on housing 25. Threaded into each end of housing 25 are the removable housings 29 and 25'. The valve housing 25 communicates with the nipple 24 and is provided with a valve seat 21 on which is normally seated a valve 28.

v The valve housing 26 communicates with a chamber 29 in housing 25, and this chamber is connected up with the main supply conduit by means of a nipple 38. Leading from the chamber 29 into the nipple 24 is a small angular passage 3|, in one end of which is arranged a needle valve 32, controlling passage of the fluid from chamber 29 through the angular passage 3|. Ordinarily, this valve 32 is opened so that a small amount of gas or other fluid is admitted to the pilot 22 to keep the same burning sufliciently to readily ignite the burners 3 when the case requires.

The valve 28 is provided with a valve stem 33 having attached to its outer end a plunger 34 which carries a threaded stud 35 and adjustably mounted on this stud is a stop plate 38 integral with the lateral projection 31 on the lower edge of the bar I4. The valve housing 29 is provided with a partition 38 through which the valve stem 33 moves and positioned between the plunger 34 and the partition 38 is a coil spring 39 which surrounds the valve stem 33 to normally maintain the valve 28 in a seated position.

The conduit 2| heretofore referred to leads to an apertured flash-head 48 arranged in the elongated housing 23 at a point adjacent the oven, and this conduit 2 I, is detachably connected to the nipple 4| which has direct communication with the valve chamber 26'. The valve chamber 28'- is formed with a valve seat 42 on which is normally seated a valve 43. The stem 44 of valve 43 is slidably mounted in a bore 45 in the removable plug 49 arranged in one end of the valve housing 26'. Positioned on the valve stem 44 and arranged between the plug 46 and the valve 43 is a coil spring 41 which normally maintains the valve 43 in a closed position.

At this point, I wish to call attention to the fact that the valve 28 is provided with an auxiliary stem 48 which extends into the chamber 29 and valve 43 is provided with an auxiliary stem 49 which extends into chamber 29 lnlongi- .tudinal alignment with the extension or auxiliary stem 48. v

The valve 28 is normally urged to a seated position by means of the comparatively heavy spring 58, arranged in the chamber 29 and around the two auxiliary stem portions 48 and 49. One end of this spring 58 bears against a washer 5| which is fitted against the valve 28. while the other end of the spring bears against a similar washer mounted on the auxiliary stem 49 and bears against the inner end of valve housing 25, as clearly illustrated in Figure 4.

Connected to the branch portion 1' of the conduit 4' is a small conduit 52 which leads into the elongated housing 23 adjacent the head member 48 and then continues out through the end of housing 23 which opens into the oven 2 and an igniting pilot 53 is attached to the end of the conduit- 52 adjacent the oven burner I9 for igniting the oven burner when fuel is admitted to this burner.

It will be noted from the showing in Figure 1, that when the pilot 22 is turned on with a comparatively heavy force, the flame which passes into the housing orchamber 23 will ignite gas flowing from the flash-head 48, the head 48 being provided with oppositely positioned openings, one facing the pilot 22 and the other facing the pilot 53, the flash-head 48 being ignited from pilot 22 and in turn igniting the oven burner l9.

From the above description, it will be readily noted that normally the pilot 22 is continually burning with a very small flame, due to the admittance of fuel passed the needle valve 32. However, when one of the valves 8 is actuated for admitting fuel to one of the burners 3, the rotation of the valve stem will actuate the cam I5 carried thereby which in turn will engage the end of its respective finger I5- and reciprocate bar I4. The reciprocation of bar l4 will impart movement to the plunger 34 for unseating valve 28, this movement will admit the fluid under pressure to the pilot 22 and as the openings in the pilot light are such as to project the flame for a considerable distance, the burner into which fuel has been admitted will be ignited by one 01' these projecting flames. Attention is directed to the fact, however, that as the valve continues in its -opening movement, the cam I5 will pass flnger I6, therefore releasing bar I4 whereby the tension of the springs 39 and 58 will not only return the valve 28 to its seat 21, but will return the bar I4 to its normal position, illustrated inFigure 2, and also cut the supply of fuel to the pilot 22 down to normal or the amount which flows past the needle valve 32.

In operating the oven burner, attention is directed to the fact that when the valve 8 is actuated for admitting fuel to the burner I9, the bar I4 is reciprocated a longer distance than in the reciprocation due to the opening ofone of the valves 8. This movement of bar I4, through the engagement of cam I5 with finger I6 will cause the auxiliary stem portion 48 to valve 21' to contact with the auxiliary stem portion 49 to valve 43, unseating valve 43 and permitting the fuel to flow in through nipple 4| and conduit 2i to flash-head 48.

Attention is directed to the fact that when valve 8' is opened, the fuel is admitted to the conduit 52 and to the oven burner therefore, when the valve 43 is unseated and fuel admitted to the flash-head 48, the head 48 will be ignited from the projected flame oi pilot 22 and in turn will ignite the oven burner and the safety pilot 53.

The operation, through the movement of valve 8', is similar to the other valves, as cam I5 will pass the end of finger I5 after a predetermined opening movement of valve 8, so that the spring members 39, 41 and 58 will return valves 28 and 43 to their normally seated positions. In view of the fact that all of the fingers, including finger I3 are pivotally mounted, the valves 8 and 8' can be readily moved to a. closed position without imparting any movement to bar I4.

Referring more particularly to Figures 6 and 7, wherein I have illustrated the modified control for the main pilot and the oven pilot, it will be noted that the conduit 55 which leads into a main housing 55 communicates with a central chamber 51. Threaded into each end of the housing 58 are the valve housings 58 and 58'. The valve housing 58' is provided with a chamber 59 which communicates through passage 58, with the main supply pipe 8|.

Communication is established between chambers 51 and 59 by means of a short passage 62 having a valve seat at the end leading into chamber 51 upon which is normally seated a valve 63. The valve 63 is provided with a main stem 54 mounted for reciprocating movement in the partition walls 55.

Slidably mounted in the valve housing 58 is a plunger 86 having a head 61 adapted to be manually compressed for urging the valve 63 from its seat. A coil spring 68 normally maintains the valve 63 in a seated position.

The plunger 6 is provided with an annular groove 69 adapted to receive a spring-pressed ball 10- when plunger 66 is pressed inwardly to indicate the relative position of the valve 63 when opening passage from the main conduit 6! to the chamber 51.

A bleed conduit 1.0 is provided between chambers 51 and 59 and passage therethrough is controlled by the needle valve 1| whereby the main pilot may be provided with a continual supply of fuel. The inner end of. the valve stem 64 pro- .iects beyond the valve 63 for a short distance, as shown at 12. I

The outer end of the valve housing 58 is normally closed by means of a plug 13 having a central bore 14 in which the inner end of valve stem 15 is slidably mounted. The .valve stem 15 carries a valve 16 which normally closes communication between the valve housing 58' and chamber 51. The valve 16 is normally maintained in a seated position by means of the coil spring 11.

The valve-stem 15 projects beyond the valve "to form an auxiliary stem portion 18, positioned in alignment with the extended portion 12.

It will be apparent that in the use of this manually controlled type of device, the valve 63 will bev unseated by pressing inwardly upon the head As the groove 69 reaches the ball 10, it will indicate to the operator that the valve 63 is opened sufliciently to provide the proper amount of increase of fuel to the main pilot for igniting any one of the burners in close proximity to the pilot. supply of fuel to the conduit 19 which leads to the oven burner, the plunger 66 is forced inwardly until the extended part 12 of valve stem 54 engages the extension 18 to valve stem 15 which -will gounseat the valve 16 and permit the passage of However, when it is desired to provide a mediate pilot light lighting the oven fluid through the conduit 19 to the flash-head for the oven burner.

'I'hismanually actuated type of, control for the pilots, may be used in place of the automatically operated control illustrated in Figure 4, and described as the preferred construction.

The device is very simple and can be manufactured and applied to gas stoves where more than one pilot light is desired for igniting the various burners. i

I It will be apparent from the foregoing that I have provided a, comparatively simple and inexpensive-device, wherein any, one of the several burners of the stove can be quickly ignited from a centrally located pilot and the oven burner can also be ignited from the'same pilot by providing the intermediate head 50.

I claim:

1. A valve for use inconnection with a lighter for the burner of a gas cooking stove comprising, a housing having spaced fuel outlets at one side for connection respectively with a pilot and a fiashhead and a fuel inlet at another side, opposed spring actuated valves normally fitted in said housing to close communication between the inlet and said outlets, means whereby to open one of said valves a predetermined distance to provide communication with the inlet and one of the outlets, and means whereby to open the other of said valves from the first valve, after the first valve has been open a predetermined distance to establish communication between the inlet and the other of said outlets.

2 In combination with a gas range an oven burner and a constant burning pilot light remote therefrom, a pilot light adjacent the oven burner,

a pilot light intermediate the oven pilot light and the constant burning pilot light, means to simultaneously. deliver gas to the oven burner and said oven and intermediate pilot lights, a flash tube between the constant burning pilot light and the intermediate pilot light, a flash tube between the intermediate pilot light and the oven pilot light,

said constant burning pilot lightigniting the intermediate pilot light by a hash and the interpilot light by a. flash through said tubes when gas is delivered to the oven and ovenburner pilot lights as defined.

ALFRED WILD.

burner and said intermediate