GB467354A - Improvements in road contact devices for road traffic signalling apparatus - Google Patents

Improvements in road contact devices for road traffic signalling apparatus

Info

Publication number
GB467354A
GB467354A GB547836A GB547836A GB467354A GB 467354 A GB467354 A GB 467354A GB 547836 A GB547836 A GB 547836A GB 547836 A GB547836 A GB 547836A GB 467354 A GB467354 A GB 467354A
Authority
GB
United Kingdom
Prior art keywords
strips
bed
strip
contact
resilient
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
GB547836A
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 GB547836A priority Critical patent/GB467354A/en
Publication of GB467354A publication Critical patent/GB467354A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/10—Contact cables, i.e. having conductors which may be brought into contact by distortion of the cable
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/02—Detecting movement of traffic to be counted or controlled using treadles built into the road
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H01H3/141—Cushion or mat switches
    • H01H3/142—Cushion or mat switches of the elongated strip type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

467,354. Road signals for controlling traffic. SCOTT, W. H. Feb. 24, 1936, No. 5478. Addition to 419,533. [Class 118 (ii)] The road contact device described in the parent Specification is modified by forming the resilient bed, which supports the contact assembly, of strips of springy metal and resilient material such as rubber. The metal strip or strips serve to distribute the pressure of heavy loads on the bed to avoid local distortion. The form of the outer cover is also modified. As shown, the contact strips 1, 1<1> separated by a resilient insulating strip 2 are supported on one or more relatively thin strips 8 of rubber resting on a plain strip of springy metal 6 further supported on a relatively thick strip 5 of resilient material. This is carried by a further metal strip 7 which may also be springy and supported on another resilient strip 7<1>. The width of the strips comprising the contact assembly and its bed are such that the whole assembly inserted in a rubber tube 10 has substantially flat sides and bottom and a curved top. The body 13 of the outer cover is flat at the top and inclined at the sides, the top having a curved tread 18 projecting above the framework which is constructed substantially as described in the parent Specification. In order that light loads may affect mainly the contact spring assembly, the bed being compressed on heavy loads only, the strips of resilient material in the assembly and the bed may have holes of graded size and spacing, and the contact and other metal strips may be graded as to thickness and temper.
GB547836A 1936-02-24 1936-02-24 Improvements in road contact devices for road traffic signalling apparatus Expired GB467354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB547836A GB467354A (en) 1936-02-24 1936-02-24 Improvements in road contact devices for road traffic signalling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB547836A GB467354A (en) 1936-02-24 1936-02-24 Improvements in road contact devices for road traffic signalling apparatus

Publications (1)

Publication Number Publication Date
GB467354A true GB467354A (en) 1937-06-16

Family

ID=9796948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB547836A Expired GB467354A (en) 1936-02-24 1936-02-24 Improvements in road contact devices for road traffic signalling apparatus

Country Status (1)

Country Link
GB (1) GB467354A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455465A (en) * 1983-01-10 1984-06-19 Automatic Toll Systems, Inc. Treadle assembly with plural replaceable treadle switches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455465A (en) * 1983-01-10 1984-06-19 Automatic Toll Systems, Inc. Treadle assembly with plural replaceable treadle switches

Similar Documents

Publication Publication Date Title
GB467354A (en) Improvements in road contact devices for road traffic signalling apparatus
GB502532A (en) Improvements in low capacity air-dielectric condensers
GB827158A (en) Electrostatic filter element
GB187079A (en) Improvements relating to changeable signs, and the like
USD70929S (en) Design job a radio lottd speaker
GB359280A (en) Improvements in or relating to holders for thermionic valves and the like
GB266394A (en) An illuminated or luminous line or sign let into the road-way for the guidance of traffic
ES141446A1 (en) A procedure, with its inherent apparatus, for the separation of fine particles of carbon, minerals and similar materials.
AU2647125A (en) Improvements in radio signalling&#39; systems
GB256027A (en) Improved construction of trousers press
GB424407A (en) Improvements in electrical condensers
CA355162A (en) Moulded base and contact for vacuum devices
Chambonnières Œuvres complètes/de Chambonnières; publiées par Paul Brunold et André Tessier.
AU1609024A (en) Improved lightning arrester for wireless circuits andthe like
GB408476A (en) Improvements in means for marking roadways
ES25171U (en) Elastic suspension for the assembly of variable capacitors, in radiotelephone apparatus and the like. (Machine-translation by Google Translate, not legally binding)
AU102445B2 (en) Gain regulating arrangements for electrical signalling systems
ES4175U (en) Screen for radio valves. (Machine-translation by Google Translate, not legally binding)
GB467860A (en) Improvements in electrical protective devices
GB411346A (en) Improvements in the method of attaching spiral springs used in upholstery
CA246856A (en) Carrier support for switch and signal rods
CA362085A (en) Electron discharge device
AU100725B2 (en) Improvements in or relating to vertical antenna systems for radio signalling
CA249865A (en) Electron discharge device
CA256777A (en) Electron discharge device