GB190215777A - Improvements in Telephone Instruments. - Google Patents

Improvements in Telephone Instruments.

Info

Publication number
GB190215777A
GB190215777A GB190215777DA GB190215777A GB 190215777 A GB190215777 A GB 190215777A GB 190215777D A GB190215777D A GB 190215777DA GB 190215777 A GB190215777 A GB 190215777A
Authority
GB
United Kingdom
Prior art keywords
breaking
screws
making
telephone
magnet
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
Inventor
Frederick William Golby
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190215777A publication Critical patent/GB190215777A/en
Expired legal-status Critical Current

Links

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

15,777. Brander, B. July 15. Telephones.-The magnet of a telephone is mounted so that the distance of the polepieces from the diaphragm can be adjusted ; there is also a arrangement for making and breaking the circuits. The adjustment of the magnet g, Figs. 4 and 5, is made by two pairs of screws c, f mounted on perpendicular diameters, the ends of the screws c pressing against the back of the casing d, Fig. 4, and the ends of the screws f being bolted to the back of the casing by lock-nuts, Fig. 5. Fig. 1 shows the method of making and breaking the speaking circuit. The suspending-ring r is connected to a spring s, and, when suspended, the weight of the telephone breaks contact with the spring t, thus breaking the speaking circuit. Signalling may be done by pressing the ring r and making contact at v. The Provisional Specification states that auxiliary pole-pieces made of thin iron plates may be used on the receiver.
GB190215777D 1902-07-15 1902-07-15 Improvements in Telephone Instruments. Expired GB190215777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190215777T 1902-07-15

Publications (1)

Publication Number Publication Date
GB190215777A true GB190215777A (en) 1903-07-15

Family

ID=32155079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190215777D Expired GB190215777A (en) 1902-07-15 1902-07-15 Improvements in Telephone Instruments.

Country Status (1)

Country Link
GB (1) GB190215777A (en)

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