GB585407A - Resistor bulb - Google Patents

Resistor bulb

Info

Publication number
GB585407A
GB585407A GB9374/44A GB937444A GB585407A GB 585407 A GB585407 A GB 585407A GB 9374/44 A GB9374/44 A GB 9374/44A GB 937444 A GB937444 A GB 937444A GB 585407 A GB585407 A GB 585407A
Authority
GB
United Kingdom
Prior art keywords
casing
core
resistance
members
metal
Prior art date
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
Application number
GB9374/44A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomas A Edison Inc
Original Assignee
Thomas A Edison Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomas A Edison Inc filed Critical Thomas A Edison Inc
Publication of GB585407A publication Critical patent/GB585407A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient

Abstract

585,407. Temperature variable resistors. EDISON, Inc., T.A. May 16, 1944, No. 9374. Convention date, July 8, 1943. [Class 37] The resistor element of a resistance bulb (thermometer) extends lengthwise of its casing, has a cross-sectional shape such that a considerable portion of its surface is at a relatively substantial distance from the casing wall, and is secured to heat conducting means thermally associated therewith and adapted to contact the casing wall and slide against this wall on insertion or removal of the element from the casing. As shown the resistor element comprises a flat strip core 8 preferably of laminated mica on which the resistance wire 10 e.g. of pure nickel is wound under tension, so that it indents and becomes embedded in the edges of the core. A rivet 11 secures to the lower ends of the core laminations, preferably two in number, electrically insulating strips 26, e.g., of mica and resilient heat conducting members 25, e.g., of silver. The members 25 have a flat central portion 25a, and arcuate side fins 25b so dimensioned that when the resistance element is slid into the metal casing 6 the fins 25b are strained so that the members 25 resiliently hold the resistance strip in position Fig. 6 (not shown). The casing 6 is also made of high conductivity metal, e.g., stainless steel containing 18 per cent chromium and 8 per cent. nickel so that heat is readily conducted through the case 6 and metal members 25 to the resistance unit. The core 8 is secured at its top end to cylindrical plug 13 made, e.g. of " Isolantite " (Registered Trade Mark) by lugs 15a of two metal members 15 welded to the lower ends of terminal pins 14 glass-sealed into the plug 13. The lead 10a of the resistance wire 10 passes, between the laminations of core 8 and through a hole 17 to a lug 15b of one of the members 15. The other lead 10b passes through a hole 19 in the core 8, to a terminal 20, the usual adjusting coil 18 of glass fibre insulated wire of substantially zero resistance temperature coefficient, e.g. of constantin being connected in series with terminal 20 and the other member 15. The coil 18 may be bent to U form having its ends projecting through holes 22 in the core 8. The resistance unit is held within the casing 6, secured, e.g. by silver soldering to a base member 1, by a sleeve 23, soft metal washers 24 being interposed between the flange 13a on the plug 13 and the engaging surfaces of the base 1 and sleeve 23 to seal the bulb hermetically. The Specification gives dimensions and conductivities for the resistance wire 10, resilient members 25 and the casing 6. U.S.A. Specification 2,307,626 is referred to.
GB9374/44A 1943-07-08 1944-05-16 Resistor bulb Expired GB585407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US585407XA 1943-07-08 1943-07-08

Publications (1)

Publication Number Publication Date
GB585407A true GB585407A (en) 1947-02-06

Family

ID=22017448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9374/44A Expired GB585407A (en) 1943-07-08 1944-05-16 Resistor bulb

Country Status (1)

Country Link
GB (1) GB585407A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105636B (en) * 1958-01-31 1961-04-27 Landis & Gyr Ag Temperature sensor with resistance wire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105636B (en) * 1958-01-31 1961-04-27 Landis & Gyr Ag Temperature sensor with resistance wire

Similar Documents

Publication Publication Date Title
US3958208A (en) Ceramic impedance device
US2307626A (en) Resistance thermometer
US2480166A (en) Resistor for thermogauges
US2265821A (en) Precision resistor
US2456030A (en) Electric soldering iron
US2396196A (en) Controllable resistor
US2280257A (en) Resistor device and method of making the same
US2740031A (en) Miniature temperature-responsive resistor
GB585407A (en) Resistor bulb
US3175178A (en) Electric temperature probe
US2389915A (en) Resistor device
US2374055A (en) Thermal responsive device for electrical coils
US2398892A (en) Resistor bulb
US1731822A (en) Thermostat
US2425443A (en) Coil construction
US2395759A (en) Resistor
US2274830A (en) Resistor and method of manufacturing the same
US3295373A (en) Temperature responsive mechanism
US1513210A (en) Thermal relay
US1780202A (en) Circuit-breaking device
JPS606978Y2 (en) temperature sensitive switch
US2878351A (en) Heated thermistor
US1919975A (en) Electrical heater for thermal relays
GB488838A (en) Electrical temperature-responsive units
US2497439A (en) Resistor bulb