GB176136A - Improvements in or relating to railway signalling apparatus - Google Patents

Improvements in or relating to railway signalling apparatus

Info

Publication number
GB176136A
GB176136A GB3397220A GB3397220A GB176136A GB 176136 A GB176136 A GB 176136A GB 3397220 A GB3397220 A GB 3397220A GB 3397220 A GB3397220 A GB 3397220A GB 176136 A GB176136 A GB 176136A
Authority
GB
United Kingdom
Prior art keywords
relating
signalling apparatus
railway signalling
transformer
primary
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
GB3397220A
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
Priority to GB3397220A priority Critical patent/GB176136A/en
Publication of GB176136A publication Critical patent/GB176136A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current

Abstract

176,136. Tattersall, A. E. Dec. 1, 1920. Addition to 153,374. Drawings to Specification. Grant of Patent refused. Electrical systems, automatic.-In a signalling system as described in the parent Specification, all regulating-means are omitted from the primary circuit of the rail-feeding transformer or, alternatively, regulation is effected by means of tappings on the primary or secondary or both windings of the transformer.
GB3397220A 1920-12-01 1920-12-01 Improvements in or relating to railway signalling apparatus Expired GB176136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3397220A GB176136A (en) 1920-12-01 1920-12-01 Improvements in or relating to railway signalling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3397220A GB176136A (en) 1920-12-01 1920-12-01 Improvements in or relating to railway signalling apparatus

Publications (1)

Publication Number Publication Date
GB176136A true GB176136A (en) 1922-03-01

Family

ID=10359740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3397220A Expired GB176136A (en) 1920-12-01 1920-12-01 Improvements in or relating to railway signalling apparatus

Country Status (1)

Country Link
GB (1) GB176136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979284A (en) * 1987-12-05 1990-12-25 Renishaw Plc Apparatus for changing a sensing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979284A (en) * 1987-12-05 1990-12-25 Renishaw Plc Apparatus for changing a sensing device

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