GB300498A - Improvements in or relating to impulse senders for use in telephone or like systems - Google Patents

Improvements in or relating to impulse senders for use in telephone or like systems

Info

Publication number
GB300498A
GB300498A GB28993/28A GB2899328A GB300498A GB 300498 A GB300498 A GB 300498A GB 28993/28 A GB28993/28 A GB 28993/28A GB 2899328 A GB2899328 A GB 2899328A GB 300498 A GB300498 A GB 300498A
Authority
GB
United Kingdom
Prior art keywords
dial
pawl
impulses
ring
wheel
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
GB28993/28A
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Publication of GB300498A publication Critical patent/GB300498A/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
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
  • Telephone Set Structure (AREA)

Abstract

300,498. Associated Telephone & Telegraph Co., (Assignees of Sengebusch, H.). Nov. 12, 1927, [Convention date]. Impulse-transmitters.-An impulse transmitter of the finger-hold type comprises concentric dials controlling separate mechanisms for sending different maximum numbers of impulses. An inner dial (not shown) sends up to ten impulses in the usual way, while an outer dial sends up to 25 impulses and is used for dialling single code digits for frequently-wanted calls over a separate circuit to a register-translator as in Specification 300,497. The outer dial 3, Fig. 4, is fixed to a ring 35 running on ball-bearings around a ring 38 attached to a base-plate 7. The inner edge 42 of the dial overlaps a dust-cover 39 on the ring 38. When the dial 3 is turned it rotates, through gearing 36, 28, 25, a shaft 24 against a spring 47. A pawl 29 on the gear-wheel 25 rides over a ratchet wheel 27 during the setting movement. The ratchet 27 is rotatably mounted on the shaft 24 and is connected to a gear 26, which is in mesh with the drive 22, 21, 15 of a governor 16. When the spring returns the dial, t'he pawl 29 rotates the ratchet 27 so that the governor controls the speed of return. During the return, a cam 20 on the shaft 19 of gear-wheel 22 acts upon the impulse-springs 44 in the usual way to send impulses over the special circuit to the register-translator. When the dial 3 is off-normal, a stop-lever 31, Figs. 2 and 3, is removed from engagement with the pawl 29 under the influence of spring contacts 45, so that the pawl may act freely ; when however the dial approaches normal, a projection 56, Fig. 3, on the ring 35 engages a bent finger 32<1> on the stoplever 31 to force it against the pawl 29 and so act as a positive stop for the dial. The wheel 28 is mounted on the plate 7, but the remaining mechanism is mounted on a removable plate 12 mounted on posts 8, 10 on the base-plate 7. The governor-spindle is mounted in adjustable bearings.
GB28993/28A 1927-11-12 1928-10-09 Improvements in or relating to impulse senders for use in telephone or like systems Expired GB300498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US232772A US1770554A (en) 1927-11-12 1927-11-12 Calling device

Publications (1)

Publication Number Publication Date
GB300498A true GB300498A (en) 1930-01-09

Family

ID=22874517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28993/28A Expired GB300498A (en) 1927-11-12 1928-10-09 Improvements in or relating to impulse senders for use in telephone or like systems

Country Status (3)

Country Link
US (1) US1770554A (en)
BE (1) BE354669A (en)
GB (1) GB300498A (en)

Also Published As

Publication number Publication date
US1770554A (en) 1930-07-15
BE354669A (en)

Similar Documents

Publication Publication Date Title
GB300498A (en) Improvements in or relating to impulse senders for use in telephone or like systems
US2183713A (en) Call transmitter
US2061273A (en) Repertory dial
US2217074A (en) Calling device
US2252875A (en) Call transmitter device
US3525821A (en) Miniature rotary dial
US2244609A (en) Calling device
US2036037A (en) Telephone call transmitter
US2368104A (en) Impulse sender for use in telephone or like systems
US2189944A (en) Telephone call transmitter
US3761639A (en) Telephone dials
US2375179A (en) Call transmitter
US851458A (en) Party-line telephone system.
US1484739A (en) Impulse transmitter
US1354814A (en) Impulse-transmitting device
US2246698A (en) Call transmitter device
US948941A (en) Telephone call system.
GB1018274A (en) A new or improved device for limiting telephone calls
US1691575A (en) Impulse-dial apparatus for automatic telephone systems
GB696588A (en) Improvements in or relating to dial switches for use with coin-box telephone instruments
US3003042A (en) Two cam interpulse station identifying dial
US1140658A (en) Telephone system.
US1324356A (en) Callihg device
US1119526A (en) Calling device.
GB377489A (en) Improvements in alarm devices for use in connection with telephone systems