US1588776A

US1588776A - Fluid heater

Info

Publication number: US1588776A
Application number: US710003A
Authority: US
Inventors: Milton H Shoenberg; Schon Lester
Original assignee: SHOENBERG
Current assignee: SHOENBERG
Priority date: 1924-04-30
Filing date: 1924-04-30
Publication date: 1926-06-15
Anticipated expiration: 1943-06-15

Description

June 15 1926.

M. H. SHOENBERG- ET AL FLUID HEATER Original Filed April .50. 1924 INVENTOR.

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Patented. June 15, 1926.

UNITED STATES PATENT OFFICE.

MILTON H SHOENBERG AND LESTER SCHON, OF SAN FRANCISCO, CALH'OBNIA; SAID SCHON ASSIGNOR TO SAID SHOENBERG.

FLUID HEATER.

Application filed April 30, 1924,'Seria1 No. 710,003. Renewed Februaw 18, 1928.

Our invention has for its object a simple electric device for heating water or other fluids in any conventional container.

Other objects are means for automatically interrupting the energizing circuit when the heating element becomes too hot, and also means for maintaining the heating element deenergized until it has been plunged into the fluid to be heated, or when withdrawn therefrom. v

Other objects are a heating element inclosing an electrical resistance hermetically sealed therein and mounted on a tubular telescoping support in combination with automatic cut-out means interrupting the circuit when the element becomes overheated.

By referring to the accompanying drawings our invention will be made clear.

Fig. 1 is a side view of one form of heater employing our invention.

Fig. 2 is an enlarged fragmentary side view with some of the parts broken away to better show the details of construction.

Fig. 3 is a section of the tubular support and showing in view the supporting arm of the heating element and is taken on the line TIL-III of Fig. 2.

Fig. 4 is a part cross section ,and part side view of the heating element with the automatic cut-out means and the electric circuit connections, and also shows the winding of the resistance wire within the heating element.

Fig. 5 is a fragmentary enlarged cross section at right angles to Fig. 4 showing the manner of winding and insulating the resistance element and its mounting within the metallic sheath. 7

Throughout the figures similar numerals refer to identical parts.

A base plate is shown by the numeral 1 from which rises the standard 2 and within which latter is telescoped the tube 3, the latter carrying an extended arm 4 having a clamp screw and collar at 5, 6, respectively and a releasing pin at 7 normally held in the position shown in Fig. 2 by the spring 8. When the pin 7 is withdrawnthe passageway within the standard 2 is cleared and the member 3 then telesco the full line position of F gl, at which time 27 burns.

pe's or we may the. heating element 9 has fully entered the tumbler or other receptacle 10, and is now in position for heating the water or other fluid 11. When the member 3.falls within the tube 2 due to the withdrawing of the pin 7 the

connections

12, 13, engage with the circuit terminals 14, 15, respectlvely completing the electrical circuit from the

energizing connections

16, 17, through the resistance 18.

' The current now flows through the resistance winding 18 highly heating the

sides

19, 20, of the heating element 9 which is shaped to give a large metallic surface exposure and therefore to most readily transmit the heat from the resistance coil 18 to the fluid 11.

Circuit connections to the coil 18 are es-- tablished in any conventional manner as through the

wires

21, 22, to the frictional contacts 23, 24, respectively which co-operate with the connections in the socket 25 energizingwires 26 and thence to the

connections

12, 13.

WVe prefer to mount the lamp 27 in the circuit of the heating element so that when the heating element is being energized the lamp Its manner of connection preferably in parallel, is well known and therefore not shown.

It will now be seen that if the heating element is 'in operation, the circuit plug 25 be removed from the pins 23, 24, the circuit will be broken. To automatically accomplish this when the heating element 9 becomes overheated, we provide the tube within which is adapted to loosely slide the plug 31. This plug is held in the full line position of Fig. 4 by the wire 32 which is to the energization of the coil- 18, the pin 25 and therefore plug 33 become heated and if or when this heat exceeds the melting point of the solder in the collar '33, the spring 36, which is normal y under c mpre sion,

forces the release of the wire 32 causing the plug 31 to fly upward under the action of the spring. This action pushes the connecting head or circuit plug free from the terminals 23, 24, breaking the circuit and thus causing the automatic interruption of the circuit as above described. A new safety element may be now introduced or the old one repaired and reused by compressing the spring and again soft soldering the wire 32 in the plug \Ve claim:

1. In a fluid heater a base and a standard thereon said standard comprising a pair of telescoping members, an arm extending from one of said members and overhanging said base, an electrical resistance heating element depending from said arm, energizing connections for said heating element through said members.

2. In a fluid heater a base and a standard thereon said standard comprising a pair of telescoping members, an arm extending from one of said members-and overhanging said base, an electrical resistance heating element depending from said arm, energizing connections for said heating element through said members and plugs and sockets for said connections Within said members adapted to break the circuit as the members are separated.

3. In a fluid heater a base and a standard thereon said standard comprising a pair of telescoping members, an arm extending from one of said members and overhanging said base, an electrical resistance heating element depending from said arm, energizing connections for said heating element through said members and plugs and sockets for said connections within said members adapted to break the circuit as the members are separated and latch means to normally keep the members separated.

4. In a fluid heater a base and a standard thereon said standard comprising a pair of telescoping members, an arm extending from one of said members and overhanging said base,an electrical resistance heating element depending irom said arm, energizing connections for said heating element through said members and plugs and sockets for said connections within said members adapted to break the circuit as the members are separated and latch means to normally keep the members separated, a circuit plug for said heat element and means adapted to release a spring and disconnectthe plug and heat element and interrupt the energizing circuit when the element exceeds a predetermined heat.

5. In a fluid heater a base and a standard thereon'said standard comprising a pair of telesco ing members, an arm extending from one of said members and overhanging said base, an electrical resistance heat ng. elethe solder melts the spring expands ment depending from said arm, energizing connections for said heating element through said members and plugs and sockets for said connections within said members adapted to break the circuit as the members are separated and latch means to normally keep the members separated, a circuit plug for said heat element and means adapted to disconnect the plug and heat element and interrupt the energizing circuit when the element exceeds a predetermined heat and comprising a spring restrained by a soldered connection which when the solder melts due to excessive heat, is released and separates the plug and the element. I

6. Safety means for an electric heating device comprising a spring compressed within a tube, a tie wire soldered to one end of said tube and holding said spring compressed a drive pin at the other end of the tube and circuit breaking means whereby when forcing the drive pin to actuate the circuit breaking means.

7 In a fluid heater a base and a standard thereon said standard comprising a pair of telescoping members, an arm extending from one of said members and overhanging said base, an electrical resistance heating element depending from said arm, energizing connections for said heating element through said members in combination with safety means comprising a spring compressed within a tube a tie wire soldered to one end of said tube and holding said spring compressed, circuit breaking means and a drive pin at the other end of the tube which actuates the circuit breaking means when the solder melts.

8. In a fluid heater a base and a standard thereon said standard comprising a pair of telescoping members, an arm extending from one of said members and overhanging said base, an electrical resistance heating element depending from said arm, energizing connections for said heating element through saidmembers and plugs and sockets for said connections within said members adapted to break the circuit as the members are separated in combination with safety means comprising a spring compressed within a tube a tie wire soldered to one end of said tube and holding said spring compressed, circuit breaking means and a drive pin at the other end of thetube which actuates the cirguit breaking means when the solder me ts.

9.. In a fluid heater a base and a standard thereon said standard comprising a pair of telescoping members, an arm extending from one of. said members and overhanging said base, an electrical resistance heating element depending from said arm, energizing connections for said heating element through said, members a d plugs and sockets for said.

connections within said members adapted to pressed, circuit breaking means and a drive break the circuit as the members are sepapin at the other end of the tube which acturated and latch means to normally keep the ates the circuit breaking means when the s01- 10 members separated in combination with safeder melts.

6 ty means comprising a spring compressed within a tube a tie wire soldered to one end MILTON -H. SHOEN BERG. of said tube and holding said spring com- LESTER SGHON.