US1113154A - Safety device for electrically-heated cooking apparatus. - Google Patents

Safety device for electrically-heated cooking apparatus. Download PDF

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Publication number
US1113154A
US1113154A US66753011A US1911667530A US1113154A US 1113154 A US1113154 A US 1113154A US 66753011 A US66753011 A US 66753011A US 1911667530 A US1911667530 A US 1911667530A US 1113154 A US1113154 A US 1113154A
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United States
Prior art keywords
cooking apparatus
electrically
safety device
electric
heated cooking
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US66753011A
Inventor
Lloyd Groff Copeman
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Individual
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Individual
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Priority to US66753011A priority Critical patent/US1113154A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0205—Switches using a fusible material

Definitions

  • A is the cabinet of a fireless cooker
  • an electric heating unit C within the chamber B of which is arranged an electric heating unit C.
  • D is the service conductor for the electric current
  • E is an electric switch contro1- ling the same.
  • a casing formed of porcelain or other fireproof and electrical insulating material, being of any suitable shape, such, for instance, as an ordinary rosette, G are the electric contacts and H is the fusible connector which is coupled to the contacts and is inclosed between the upper section F of-the rosette and the base F thereof.
  • the current supply to the heatin unit C normally passes from the leads through the fuses H which are sufficiently low in resistance to avoid any danger of being electrically blown.
  • an abnormal which are of low melting point will be broken interrupting the current and preventing further heating.
  • an electrically heated apparatus the combination with a heat insulated chamber, of an electric heater therein, an electric circuit in which said heater is connected, and a fusible link included in said circuit of sulficiently high electrical conductivity to avoid fusion from internally generated heat and of relatively ing positioned on the opposite side of said chamber from said heater and exposed to heat conducted or radiated from said chamber, and adapted to be fused by an abnormal heating of the contents of the chamber.

Landscapes

  • Baking, Grill, Roasting (AREA)
  • Control Of Resistance Heating (AREA)

Description

L. a. ODPEMAN. SAFETY DEVICE FOR ELEOTBIOALLY HEA'I ED COOKING APPARATUS.
APPLIOATIOI FILED D20. 23, 1911.
Patented 0cf.6, 1914.
Way 1 Ill/1 [27 7 v)? for oyd. G'raff, Copeman 1m Mam A. V r
UNITED STATES PATENT OFFICE.
LLOYD eaorn-fcoramau, orrmnr, MICHIGAN.
SAFETY DEVICE FOR ELECTRIGAIiLY-HEATED COOKING APPARATUS.
To all whom z't mag concern: j
Be it known that L'LLoYn Gnorr Corn- MAN, a citizen of the United Statesof America, residing at Flint, in the county' of Genesee and State of Michigan, have invented certain new and useful Improvements in Safety Devices for Electricall -Heated Cooking Apparatus,.of which the f bllowing is a specification, reference being had there: in to the accompanying drawin Q T e invention relates to electrically-heats ed cooking apparatus, and it is the object of the invention to guard against dangerous overheating of the apparatus through: the accidental continuance of the electric heat generation when the device is not in luse. Heretofore various have been applied to apparatus of this kind, which are designed to break the electric circm by the mechanical operationpf a switch thermostatically controlled. It is alsp customary to guard the electric circuits by fuses. These do not, however, effectually prevent overheating, for the reason that thermostatic devices are uncertain in their operation and the electric fuses are only blown where there is an abnormal flow of current therethrough.
With the present invention I secure safety by guarding the electric circuits with lowing, A is the cabinet of a fireless cooker,
within the chamber B of which is arranged an electric heating unit C. D is the service conductor for the electric current, and E is an electric switch contro1- ling the same.
Specification of Letters Patent.
Application filed December as, 1911.
'allforms of thermostats that any Patented Oct. 6, 1914. Serial No. 667,531
guarded by a fuse, and these fuses are arranged in separate chambers so as to avoid danger of short circuiting. As illustrated,' is a casing formed of porcelain or other fireproof and electrical insulating material, being of any suitable shape, such, for instance, as an ordinary rosette, G are the electric contacts and H is the fusible connector which is coupled to the contacts and is inclosed between the upper section F of-the rosette and the base F thereof.
In operation the current supply to the heatin unit C normally passes from the leads through the fuses H which are sufficiently low in resistance to avoid any danger of being electrically blown. When however, an abnormal which are of low melting point, will be broken interrupting the current and preventing further heating.
What I claim as my invention is:
In an electrically heated apparatus, the combination with a heat insulated chamber, of an electric heater therein, an electric circuit in which said heater is connected, and a fusible link included in said circuit of sulficiently high electrical conductivity to avoid fusion from internally generated heat and of relatively ing positioned on the opposite side of said chamber from said heater and exposed to heat conducted or radiated from said chamber, and adapted to be fused by an abnormal heating of the contents of the chamber.
In testimony whereof I aflix my signature in presence of two witnesses.
LLOYD GROFF COPEMAN.
Witnesses:
'WM. (lsrnwAm',
EVERE'I'I' L. BEBY.
low fuslng point, said link be-
US66753011A 1911-12-23 1911-12-23 Safety device for electrically-heated cooking apparatus. Expired - Lifetime US1113154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US66753011A US1113154A (en) 1911-12-23 1911-12-23 Safety device for electrically-heated cooking apparatus.

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US66753011A US1113154A (en) 1911-12-23 1911-12-23 Safety device for electrically-heated cooking apparatus.

Publications (1)

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US1113154A true US1113154A (en) 1914-10-06

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US66753011A Expired - Lifetime US1113154A (en) 1911-12-23 1911-12-23 Safety device for electrically-heated cooking apparatus.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134005A (en) * 1976-02-06 1979-01-09 Keramisch Instituut Haarlem, B.V. Method and device for controlling the temperature variation in a potter's oven

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134005A (en) * 1976-02-06 1979-01-09 Keramisch Instituut Haarlem, B.V. Method and device for controlling the temperature variation in a potter's oven

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