US2512250A - Automatic electric starter for burners - Google Patents

Description

June 20, 1950 P. JAKOB AUTOMATIC ELECTRIC STARTER FOR BURNERS Filed Aug. 5, 1948 NE T ME E INVENTOR. BY

Patented June 20, 1950 UNITED STATES PATENT OFFICE AUTOMATIC ELECTRIC STARTER FOR BURNERS Pablo-Jakob, Buenos Aires, Argentina 5 Claims.

The present invention is concerned with an automatic electric starter for burners with auto-' fication of a liquid combustible, and after that I has been accomplished, the start of the combustion, leaving to the action of the combustion,

once started, the continuity of the process.

The new invention solves, with a maximum of structural and constructional, simplicity, the

problems inherent to such an operation.

It is composed substantially of a, starter button which is used to put into action an electric resistance linked up with the gasifying tube, and at the same time close the outlet valve of the combustible. As also a thermostat element regulated in such a manner, that when the gasifying tube reaches a prefixed temperature, it acts on a relay, which also, simultaneously, opens the outlet valve of the combustible and cuts the supply of current to the beforementioned heat consists in the fact that the'only thing necessary to start the burner working is to press the starter button. As, from there on,, until the burner is working normally, the intervening stages each other automatically.

Another notable advantage arisesfrom the system of the use of an electric resistance as a means of heating. The operation takes place, in the.

succeed best possible conditions 'as regards cleanliness" and efficiency as well as the degree of. homogeneity required. As the electriccurrent is cut off immediately the burner starts to functionproperly, the procedure is also extremelyeconomical. Q

The thermostatelement; regulated as required,

guarantees the temperature required for the gasifying tube at the moment-that, combustion is commenced. v p

The formation of matterforeign to the nor-1; mal process of combustion, which with the con-' tinued use of, the burner. accumulates and intime may be the origin of trouble invthe functioning of the same, is eliminated by the new. procedure.

The entire, device is of ,simple and. solid construction and economicaljto produce, as .can be seen from, the drawings, which accompany the present memorandum, and. claims. Th y ,55 with a threaded member 5| which is in contact trate one ofv thepreierredicrms. for the. practi.

cal realization of the fundamental idea, which,

of course, as is logical could be altered.

I refer to th drawings in the following description, with the object of enlarging on and clarifying the idea, and at the same time demonstrating its practicability.

Figure 1 is a complete plan of the automatic starter device.

Figure 2 is a partial view of the zone correlll sponding to the starter button and the relay as also their auxiliary elements.

In the corresponding description use will be made of numbers to identify the distinct parts of the whole, it being understood that the same numbers although in different styles, indicate the same thing or their equivalents.

The starter button I which can slide longitudinally in the interior of the guide 2 of the fixed element 3 has an extension 4 which has a 20 hooked end 5 which can be hooked to the corresponding hooked end 6 of the spring arm 1 of the element 8 which is fixed in 9.

A-lug of the extension 4 has an opening 4 H in which is attached the end l2 of the spring I3 the opposite end of which [4 is attached in its turn, to the opening l5 at the end I6 of the cross strut ll.

The cross strut I! which is rigid with the stem I8 has at its other end l9 a slot which takes, 3 with the use of the washer 2| and the split pin 22 "'"the pivot pin 23 attached to the end 24 of the iron core 25 of the relay 26, the coil of which 21 is secured by its yoke 28.

The core 25 has its end free 29, and a contigu- 35 ous collar surrounded by insulating tape and has also a pivot pin 3| which with the use of the washer 33 and the cotter pin 32 is connected through the slot 34 with the end 35 of the cross piece 36 which has its opposite end free 31. This cross strut 36 kept in its place by the washer 38 and the split pin 39 revolves on the pivot pin to, mounting the piece pivotally on the fixed element 4|.

The gasifying tube 42 is surrounded by the 5' electric resistance 43 which is enveloped in an adequate packing 44. Th gasifying tube 42 has an internally threaded end 45 which is connected to the outlet valve 46 of the combustible. This valve 46 is united to the intake pipe 41 of the combustible which has its outlet in a valve chamber 48 which has at one end the ejector orifice 49. Facing thisorifice 49 is the stopper needle 50 which is constituted by the end of the stem I8, the latter having a Wider outside portion posed of the conductors and 64, the bobbin 21, conductor spark extinguisher 65, conductor 6'1, plate 68 with its contact 69, contact 10 of the plate ll, conductor 50, contacts F3! and" 62 and conductor 63. j

head 1'13 I w .adapted for use with gasifia'ble oils, including the combination of a, heated oil gasifier; a valve casing connected to the gasifier;

The plate H has ascrew 12 with a made of glass. The functioning of the automatic electric starter is as follows.

Pressing the starter button I (Figure 1) it descends (the special references refer to the distribution in the figures) until the end 5 hooks on the end 6 of the element 8. The lug NJ has drawn down with it, the end [2 of the spring l3 the opposite end of which M' makes the cross strut l1 revolve in a clockwise direction.

The oscillation of the cross strut l-l 0n the one hand forces the stem [3 to revolve on its axis and on the other hand raisesthe iron core 25 of the relay 25. When the stem It revolves the threaded wider portion 5| (Figure 1) in contact with the tapped internal wall 52 of the chamber 48 forces the stopper needle 50 to approach the ejector orifice 49, and blocks it. Atthe same time, when the iron core 25 of the relay 26 is raised its lower end 29 establishes contact between the plates El and 62, as appears in both figures.

The circuit corresponding to the resistance 43 is thus closed, and as a result of-this, begins to heat the gasifying tube 4-2. The thermal condition of the latter is partially transmitted to the elements 4'6 and 54, and thus, o'f-course, also the bimetal plate which warps, due to theaction of the temperature. It is fixed in such a -man ner that it now makes contact with the glass head '!3 of the screwl'Z of the plate'll, uniting the contacts 76' and 69 when the-temperature of the gasifier t2 has reached the required degree.

When the contacts 15 and 69 unite, they close the circuit corresponding to the coil of the relay, which causes the descent of its iron core and the positioning of the insulating collar 38 between the contacts GI and '32. On that occurring the following things happen.- The circuits corresponding to the resistance .3 and to the coil 2? of the relay, open, by breaking theelectric contact between BI and E2: the cross strut i! revolves in a counterclockwise direction, placing tension on the sprin [3 and simultaneously making the stem 18 revolve, by which the action of the threaded wider portion 58 on the tapped inner Wall 52 of the chamber 48 makes the stopper needle 53 with its widerportion 5| reelectric starter has returned to its initial position, also in its turn ready to repeat the cycle of its operation, just as has been described.

It is desired to make it quite clear that the foregoing description is a preferred form of the invention, not limited, but merely demonstrative and as an example.

Any number of changes or modifications in the construction and/0r details may be introduced, without exceeding the limits of the invention, which are clearly specified in the claims 1 that follow.

Having now fully described my invention, I claim:

1. An automatic starter for an oil burner an electric heater adjacent to the latter for thermally gasifying oil passing through said gasifier; a fuel supply pipe connected to the valve casing; a movable valve member extending into said valve casing in a position to close the flow of oil from said fuel supply pipe to the gasifier when moved in one direction and in the opposite direction effective to open the flow of oil thereto; an operating member for moving the valve member; an electric circuit connected to the electric heater having a pair of corresponding contacts for opening and closing said circuit and adapted to be connected to a current source; a movable circuit closer for closing'the circuit through the two contacts in one position and opening the circuit in another position thereof; a manually opthrough said contacts and energize said electric cede and allows the combustible to passthrough ends 6 and :2 upon which, the starter button,

having been released, returns to its normal position, forced b the tension"ofthes'pring 13.

Thus the burner is made to function and at i the same time the mechanism of the automatic heater and thereby heat said gasifier; and means for restoring said circuit closer to open circuit position and simultaneously moving said operating member to initial position upon said gasifier attaining a predetermined high tempera- 45 ture by means of said electric heater.

2. An automatic starter for an oil burner adapted for use with gasifiable oils including the combination of a; heated oil gasifier; a valve casing connected to the gasifier; an electric heater adjacent to the latter for thermally gasifying oil passing through said gasifier; a fuel supply pipe connected to the valve casing; a movable valve member extending into said valve casing in a position to close the flow of oil from said fuel supply pipe to the gasifier when moved in one direction and in the opposite direction effective to open the flow of oil thereto; an operating member for moving the valve member; an electric circuit connected to the electric heater having a pair of corresponding contacts for opening and closing said circuit and adapted to be connected to a current source; a movable circuit closer for closin the circuit through the two contacts in one position and opening the circuit in another position thereof; a manually operated member for simultaneously moving the operating member and thereby the valve member to control the flow of oil to the gasifier and moving the circuit closer to close the circuit through said contacts and energize said electric heater and thereby heat said gasifier; and electrically operated means for automatically restoring said circuit closer to open circuit position and simultaneously moving said operating member to initial position upon said gasifier at &125250 taining a predetermined high temperature by means or said electric heater.

5.,An automatic starter for an oil burner adapted ior use with gasifiable oils, including the combination OI a heated oil gasifier; a valve casing connected to the gasifier; an electric heater adjacent to the latter ior thermally gas iying Oil pass ng through said gasifier; a i'uel supply pipe connected to the valve casing; a movable valve member extending into said valve casing in a position to close the flow of oil irom said iuel supply pipe to the gasifier when moved in one direction and in the opposite direction efiective to open the flow of oil thereto; the valve casing having an internally threaded ortion and the valve member having a corresponding threaded portion engaging with the internally threaded portion in said valve casing and bein partly rotatable therein to provide the opening and closing movement of said valve member; a lever mounted on said valve member for partly rotating same; an electric circuit connected to the electric heater having a pair of corresponding contacts for opening and closing said circuit and adapted to :be connected to a current source; a movable circuit closer for 0108- ing the circuit in one position thereof; means 101' pivotally connecting one end of said lever to said movable circuit closer; a manually operated member connected to the other end of said lever for simultaneously moving said circuit closer to close said circuit through said contacts and partly rotating said valve member for controlling the now of oil to said gasifier; and automatically operated electrical means for disabling said operating member and restoring the same and the partly rotatable valve member and also the movable closure member to initial position upon said gasifier and valve casing attaining a predetermined high temperature by means of said electric heater.

4. An automatic starter for an oil burner adapted for use with gasifiable oils, including the combination of a heated oil gasifier; a valve casing connected to the gasifier; an electric heater adjacent to the latter for thermally gasiiying oil passing through said gasifier; a fuel supply pipe connected to the valve casing; a movable valve member extending into said valve casing in a position to close the flow of oil from said fuel supply pipe to the gasifier when moved in one direction and in the opposite direction effective to open the flow of oil thereto; the valve casing having an internally threaded portion and the valve member having a corresponding threaded portion engaging with the internally threaded portion in said valve casing and being partly rotatable therein to provide the opening and closing movement of said valve member; a lever mounted on said valve member for partly rotating same; an electric circuit connected to the electric heater having a pair of corresponding contacts for opening and closing said circuit and adapted to be connected to other: end of said lever 'or simultaneously movber iorcontro ng the now or oil to said gasiner;

ct DlaIlCIl Cll'CLLll'a having a second pair 01 (301'- l'i'zfiPDllQiIlg: contacts normally spaced apart in.

open c rcuit position and connected in series with tne ilrst mentioned corresponding pair oi contacts; an insulator disposed on one or the 10 ;s c on pair or contacts; a;--tl iermostatic member 6 a current source; a movable circuit closer for connected to ;;sa d valve casing in enective pus t on to become distorted upon being eated andqepress saidinsulator whereby to close said second .pair or contacts and energize said solenoid l tnrougnsaid, branch circmt when the gasiner and valve casing have attained a suriicientiy high predetermined temperature to distort said thermostatic member; and automatically operated means for disabling the manually depressible member and allowing the same to return to initial position upon said solenoid being energized.

o. An automatic starter for an oil burner adapted lor use with gasifiable oils, including me combination of a heated oil gasiiier; a valve casing connected to the gasifier; an electric heater ad acent to the latter for thermally gasiiying on passing through said gasifier; a fuel supply pipe connected to the valve casing; a movable valve member extending into said valve casing in a position to close the flow of oil from said iuel supply pipe to the gasifier when moved in one direction and in the opposite direction eri'ective to open the flow of oil thereto; the valve casing having an internally threaded portion and the valve member having a corresponding threaded portion engaging with the internally threaded portion in said valve casing and being partly rotatable therein to provide the opening and closing movement of said valve member; a lever mounted on said valve member l'or partly rotating same; an electric circuit connected to the electric heater having a pair or corresponding contacts for opening and closin said circuit and adapted to be connected to a current source; a movable circuit closer for closing the circuit through the contacts in one position and opening the circuit in another position thereof; means for pivotally connecting one end of said lever to said movable circuit closer; a movable core directly connected to the circuit closer; a stationary solenoid for actuating the core and electrically connected to said circuit contacts; a manually depressible member having a spring connecting the latter with the other end of said lever for simultaneously moving said circuit closer to close said circuit through said contacts and partly rotating said valve member for controlling the flow of oil to said gasifier; a branch circuit having a second pair of corresponding contacts normally spaced apart in open circuit position and connected in series with the first mentioned corresponding pair of contacts; a thermostatic member connected to said valve casing in efiective position to become distorted upon being heated and depress said insulator whereby to close said second pair of contacts and energize said solenoid through said branch circuit when the gasifier and valve casing have attained a sufiiciently high predetermined temperature to distort said thermostatic member; a second lever pivotally mounted adjacent to said core and having one having a spring connecting the latter with the end connected thereto; a first hook fixed on said manually depressible member; a second hook fixed in stationary positionat one end and disposed in efiective position 'to engage with the first hook upon depression of said manually depressible member and retain the latter in depressed position; and an extension on the second hook disposed adjacent to the other end of said second lever in effective position to allow said other end of said second lever to displace said extension when the solenoid is energized and thereby disengage said second hook from said first hook and allow said spring-to return said manually depressible member to initial po- REFERENCES CITED The following references are of record in th file of this patent:

UNITED fsTAT s' PATENTS Shepperd et a1. Mar. 10, 1942

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