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 systemsInfo
- 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
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)
- Telephone Set Structure (AREA)
- Toys (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.
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) |
-
0
- BE BE354669D patent/BE354669A/xx unknown
-
1927
- 1927-11-12 US US232772A patent/US1770554A/en not_active Expired - Lifetime
-
1928
- 1928-10-09 GB GB28993/28A patent/GB300498A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE354669A (en) | |
| US1770554A (en) | 1930-07-15 |
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