GB1128653A - Telephone dial switch arrangement - Google Patents

Telephone dial switch arrangement

Info

Publication number
GB1128653A
GB1128653A GB3946765A GB3946765A GB1128653A GB 1128653 A GB1128653 A GB 1128653A GB 3946765 A GB3946765 A GB 3946765A GB 3946765 A GB3946765 A GB 3946765A GB 1128653 A GB1128653 A GB 1128653A
Authority
GB
United Kingdom
Prior art keywords
cam
wheel
plastics
springs
bushing
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
GB3946765A
Inventor
Fritz Brandt
Gerhard Hoffmann
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.)
ARNSTADT FERNMELDEWERK
Fernmeldewerk Arnstadt VEB
Original Assignee
ARNSTADT FERNMELDEWERK
Fernmeldewerk Arnstadt VEB
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
Priority to DE1965V0028365 priority Critical patent/DE1259958B/en
Application filed by ARNSTADT FERNMELDEWERK, Fernmeldewerk Arnstadt VEB filed Critical ARNSTADT FERNMELDEWERK
Priority to GB3946765A priority patent/GB1128653A/en
Publication of GB1128653A publication Critical patent/GB1128653A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Centrifugal Separators (AREA)

Abstract

1,128,653. Centrifugal brakes; springs; slip couplings. FERNMELDEWERK ARNSTADT, VEB. 15 Sept., 1965, No. 39467/65. Headings F2E, F2S and F2U. [Also in Divisions H1 and H4] In a telephone dial mechanism shown in Fig. 1, the plastics gear-wheel 5 fixed to the finger-plate spindle 3 drives the plastics gearwheels 15-14 of the intermediate drive and 18 of the brake drive, the free-standing shafts 12 and 13 carrying these two drives being eccentrically mounted in bushings 10 and 11 which can be rotated to adjust the distance between the shafts and so allow for the wide range of tolerances expected in the injection plastics moulding process for the gear-wheels. The centrifugal braking or governor mechanism carried on shaft 13 comprises two braking shoes 19 (Fig. 7) pivoted at 41, 42 which upon rotation bear at points 45, 46 against a plastics bushing 17 fixed in the shaft bushing 11. The pressure of the shoes against the bushing is adjusted by moving the spring 20 along the notches. Bimetallic impulse springs 26 are operated by impulse wheel 5 but are maintained closed during anti-clockwise wind-up by cam portion 23 of a cam 6 which slides over wheel 5 as its stop 28 engages the stud 25 of the contact springs. The springs remain closed during the initial return motion until stud 25 slides off the cam portion 23. A stop 25 on cam 6 engaging abutment 30 repositions the cam 6 on the wheel 5. The frictional coupling between the cam 6 and impulse wheel 5 is adjustable by turning a saddle spring 7 (Fig. 4) so that the free end engages a different position on the raised knurled part 33 of cam 6.
GB3946765A 1965-05-03 1965-09-15 Telephone dial switch arrangement Expired GB1128653A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1965V0028365 DE1259958B (en) 1965-05-03 1965-05-03 Number switch for telephones with plastic gears and contact spring set
GB3946765A GB1128653A (en) 1965-09-15 1965-09-15 Telephone dial switch arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3946765A GB1128653A (en) 1965-09-15 1965-09-15 Telephone dial switch arrangement

Publications (1)

Publication Number Publication Date
GB1128653A true GB1128653A (en) 1968-10-02

Family

ID=10409707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3946765A Expired GB1128653A (en) 1965-05-03 1965-09-15 Telephone dial switch arrangement

Country Status (1)

Country Link
GB (1) GB1128653A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2444942A (en) * 2006-12-21 2008-06-25 Automotive Products Italia Reaction member of a brake adjuster having a plastic ring gear moulded thereon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2444942A (en) * 2006-12-21 2008-06-25 Automotive Products Italia Reaction member of a brake adjuster having a plastic ring gear moulded thereon

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