GB828300A - Improvements in or relating to the manufacture of electric cables or other insulated electric conductors - Google Patents

Improvements in or relating to the manufacture of electric cables or other insulated electric conductors

Info

Publication number
GB828300A
GB828300A GB7709/56A GB770956A GB828300A GB 828300 A GB828300 A GB 828300A GB 7709/56 A GB7709/56 A GB 7709/56A GB 770956 A GB770956 A GB 770956A GB 828300 A GB828300 A GB 828300A
Authority
GB
United Kingdom
Prior art keywords
ram
powder
piston
cylinder
hoppers
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
GB7709/56A
Inventor
James Alexander Austin
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.)
Pyrotenax Ltd
Original Assignee
Pyrotenax 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 Pyrotenax Ltd filed Critical Pyrotenax Ltd
Priority to GB7709/56A priority Critical patent/GB828300A/en
Priority to US572316A priority patent/US2884660A/en
Priority to FR1172117D priority patent/FR1172117A/en
Publication of GB828300A publication Critical patent/GB828300A/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

  • Coating Apparatus (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Air Transport Of Granular Materials (AREA)

Abstract

828,300. Cables. PYROTENAX Ltd. March 12, 1956, No. 7709/56. Class 36. In an apparatus for the manufacture of a metal-sheathed, powder-insulated cable in which the powder is fed into the sheath tube behind the head of a ram within the tube and is compressed by relative reciprocations of the tube and ram, the feed of powder to the tube behind the ram head is governed by a valve controlled by a relay operated in accordance with the relative reciprocations of the tube and ram so that feed of powder into the tube is substantially prevented during that period of the reciprocation cycle when the powder is being compressed. As shown applied to the apparatus described in Specifications 669,779, 669,780 and 669,781, powder is fed into the hollow ram F from hoppers M carried by the ram. The flow of powder from the hoppers to the ram is governed by plunger valves N, each driven by a doubleacting piston and cylinder N<SP>1</SP>, N2. The fluid supply to the cylinders N<SP>2</SP>, via the pipes P<SP>8</SP>, P<SP>9</SP>, is controlled by a piston P<SP>1</SP> sliding within a casing P<SP>2</SP> having an inlet port P<SP>3</SP> for the fluid supply and two exhaust ports P<SP>5</SP>. The piston P<SP>1</SP> is operated by a trip arm Q pivoted to the casing P<SP>2</SP> and actuated by a projecting lug Q<SP>1</SP> on the reciprocating ram cylinder E, a spring Q2 being provided to bias the piston to the position shown. During downward travel of the ram cylinder, the lug Q<SP>1</SP> rides past the trip arm Q and the piston P<SP>1</SP> remains in the upward position. The pipe P<SP>8</SP> is thus connected to the fluid supply and the plungers N are positioned by their pistons N<SP>1</SP> to prevent powder feed from the hoppers to the ram. At a point in upstroke of the ram cylinder, the lug Q<SP>1</SP> pivots the trip arm Q to depress the piston P<SP>1</SP> and so connect the pipe P<SP>9</SP> to the fluid supply thus causing withdrawal of the plungers N and allowing feed from the hoppers to the ram. The lug Q<SP>1</SP> then moves past the trip arm Q thus releasing the piston P<SP>1</SP> and so causing forward movement of the plungers N which drives the powder charge into the ram and cuts off further feed from the hoppers. Each cylinder N<SP>2</SP> is closed by a screw-threaded cap N<SP>4</SP> so that the positions of associated plunger N at the end of the backward stroke (and therefore the quantity of powder entering the ram) can be varied by rotating the cap. In another embodiment, Fig. 5 (not shown), the valve controlling the fluid supply to the cylinders N<SP>2</SP> is also the valve controlling the supply of fluid to the ram cylinder.
GB7709/56A 1956-03-12 1956-03-12 Improvements in or relating to the manufacture of electric cables or other insulated electric conductors Expired GB828300A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB7709/56A GB828300A (en) 1956-03-12 1956-03-12 Improvements in or relating to the manufacture of electric cables or other insulated electric conductors
US572316A US2884660A (en) 1956-03-12 1956-03-19 Manufacture of electric cables or other insulated electric conductors
FR1172117D FR1172117A (en) 1956-03-12 1957-01-28 Improvements in the manufacture of single or multi-conductor electric cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7709/56A GB828300A (en) 1956-03-12 1956-03-12 Improvements in or relating to the manufacture of electric cables or other insulated electric conductors

Publications (1)

Publication Number Publication Date
GB828300A true GB828300A (en) 1960-02-17

Family

ID=9838261

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7709/56A Expired GB828300A (en) 1956-03-12 1956-03-12 Improvements in or relating to the manufacture of electric cables or other insulated electric conductors

Country Status (3)

Country Link
US (1) US2884660A (en)
FR (1) FR1172117A (en)
GB (1) GB828300A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239895A (en) * 1962-01-25 1966-03-15 Ibm Apparatus for molding electrical connections

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2404559A (en) * 1943-07-26 1946-07-23 Hydraulic Dev Corp Inc Plastic slug forming and feeding mechanism
US2431843A (en) * 1944-02-18 1947-12-02 Harold H Swoger Injection press
AT165579B (en) * 1948-10-27 1950-03-25 Anton Dipl Ing Zaruba Anchoring of the buffer mechanism in the buffer sleeve of sleeve buffers
GB669781A (en) * 1949-08-19 1952-04-09 Pyrotenax Ltd Improvements in or relating to electric cables or other insulated electric conductors

Also Published As

Publication number Publication date
US2884660A (en) 1959-05-05
FR1172117A (en) 1959-02-05

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