GB137433A - Improvements in electric signalling controlled by mechanical vibrations - Google Patents

Improvements in electric signalling controlled by mechanical vibrations

Info

Publication number
GB137433A
GB137433A GB714819A GB714819A GB137433A GB 137433 A GB137433 A GB 137433A GB 714819 A GB714819 A GB 714819A GB 714819 A GB714819 A GB 714819A GB 137433 A GB137433 A GB 137433A
Authority
GB
United Kingdom
Prior art keywords
relay
bolt
box
signal
lugs
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
GB714819A
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 GB714819A priority Critical patent/GB137433A/en
Publication of GB137433A publication Critical patent/GB137433A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
    • B61L23/06—Control, warning, or like safety means along the route or between vehicles or vehicle trains for warning men working on the route
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L13/00—Operation of signals from the vehicle or by the passage of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00—Safety means for rail/road crossing traffic
    • B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
    • B61L29/26—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning mechanically operated

Abstract

137,433. Gardner, J. March 22, 1919. Sound, controlling and actuating apparatus by. -A signalling apparatus, which is caused to give a signal by the increase of resistance due to mechanical vibration of the transmitting device so as to cause a relay to release an armature, is so arranged that the signal continues until interrupted either manually or by a second automatic device. Testing keys are also provided. Details of construction of the apparatus and its enclosing casings are described. Fig. 2 shows the circuits of a bell signal d which is put in action by operation of the current reducing device c which deenergizes the relay a. The relay a is shunted through the contacts e, f<11> and remains de-energized until the relay k is de-energized by the operation of the current reducing device m. The relay k may be put out of action by the switch y which is normally open. A testing switch p is arranged in the circuit of the relay a.. A resistance n serves to adjust the sensitiveness of the apparatus and to prevent short-circuiting of the battery. Two transmitters may be used in series. The transmitter is preferably of the form described in Specification 3405/14, [Class 40 (iv), Telephones &c.], or a modification thereof comprising a single reed which may be bent or twisted and carrying two electrodes. Two reeds may be used and may be flat or twisted and fitted with insulating material suitably formed to support the loose conductors which are preferably hard carbon balls, and may be enclosed m a muslin cage. The transmitter is enclosed in a water-tight box or casing, Fig. 5, which rests on three feet or lugs 33 through which screws may be inserted for permanently fixing the casing to the sleepers. For temporary use a wing-headed bolt is passed through the cover 27 and the base 28 and screwed into the sleeper. A collar 31 or a pin prevents detachment of this bolt. The side of the box is recessed so that the bolt, which is positioned to produce equal pressures on the three lugs 33, does not pass through the interior of the box.
GB714819A 1919-03-22 1919-03-22 Improvements in electric signalling controlled by mechanical vibrations Expired GB137433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB714819A GB137433A (en) 1919-03-22 1919-03-22 Improvements in electric signalling controlled by mechanical vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB714819A GB137433A (en) 1919-03-22 1919-03-22 Improvements in electric signalling controlled by mechanical vibrations

Publications (1)

Publication Number Publication Date
GB137433A true GB137433A (en) 1920-01-15

Family

ID=9827525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB714819A Expired GB137433A (en) 1919-03-22 1919-03-22 Improvements in electric signalling controlled by mechanical vibrations

Country Status (1)

Country Link
GB (1) GB137433A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011027166A1 (en) * 2009-09-03 2011-03-10 Westinghouse Brake And Signal Holdings Limited Railway systems using acoustic monitoring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011027166A1 (en) * 2009-09-03 2011-03-10 Westinghouse Brake And Signal Holdings Limited Railway systems using acoustic monitoring
US8985523B2 (en) 2009-09-03 2015-03-24 Siemens Rail Automation Holdings Limited Railway system using acoustic monitoring

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