GB642563A - Improvements in or relating to tubular electric heating elements - Google Patents

Improvements in or relating to tubular electric heating elements

Info

Publication number
GB642563A
GB642563A GB1224748A GB1224748A GB642563A GB 642563 A GB642563 A GB 642563A GB 1224748 A GB1224748 A GB 1224748A GB 1224748 A GB1224748 A GB 1224748A GB 642563 A GB642563 A GB 642563A
Authority
GB
United Kingdom
Prior art keywords
sheath
filler tube
containers
slide
supported
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
GB1224748A
Inventor
Henry Clark
Stanley Feneley Bickell
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.)
PARNALL YATE Ltd
Original Assignee
PARNALL YATE Ltd
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 PARNALL YATE Ltd filed Critical PARNALL YATE Ltd
Priority to GB1224748A priority Critical patent/GB642563A/en
Publication of GB642563A publication Critical patent/GB642563A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/16—Rigid-tube cables

Landscapes

  • Resistance Heating (AREA)
  • Furnace Details (AREA)

Abstract

642,563. Sheathed tubular electric heaters. PARNALL (YATE), Ltd. May 4, 1948, No. 12247. [Class 39(iii)] In making an electric heater having a resistance wire 8 supported in a sheath 1, granular refractory material is fed into the sheath from at least two independent sources of supply of material of different grain size, e.g. from containers 12, 13. Within the sheath 1 slides a filler tube 7 flared out at 11 to support the containers 12, 13 each having an adjustable shutter 16 in its base. Several sheaths are mounted vertically in a frame, and the bases of the sheaths are supported on a platform which is reciprocated vertically by cams rapidly rotated by an electric motor or electro-magnetic trembler. As the sheath fills, the powder moving under the filler tube 7 lifts it gradually to the top of the sheath. The filler tube 7 may slide within coil 8 when a sheath of large diameter is used, the tube then carrying a short outer sleeve adapted to slide within the sheath. The coiled or straight wire or strip resistance 8 is suspended from a hook 10.
GB1224748A 1948-05-04 1948-05-04 Improvements in or relating to tubular electric heating elements Expired GB642563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1224748A GB642563A (en) 1948-05-04 1948-05-04 Improvements in or relating to tubular electric heating elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1224748A GB642563A (en) 1948-05-04 1948-05-04 Improvements in or relating to tubular electric heating elements

Publications (1)

Publication Number Publication Date
GB642563A true GB642563A (en) 1950-09-06

Family

ID=10001070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1224748A Expired GB642563A (en) 1948-05-04 1948-05-04 Improvements in or relating to tubular electric heating elements

Country Status (1)

Country Link
GB (1) GB642563A (en)

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