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
GB1522940A
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.)
BERNARD AUGUSTINE CRONIN
Original Assignee
BERNARD AUGUSTINE CRONIN
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 BERNARD AUGUSTINE CRONINfiledCriticalBERNARD AUGUSTINE CRONIN
Priority to GB1522940ApriorityCriticalpatent/GB543322A/en
Publication of GB543322ApublicationCriticalpatent/GB543322A/en
G08G1/00—Traffic control systems for road vehicles
G08G1/01—Detecting movement of traffic to be counted or controlled
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Current-Collector Devices For Electrically Propelled Vehicles
(AREA)
Abstract
543,322. Train-actuated electric contact devices. CRONIN, B. A. Oct. 14, 1940; No. 15229. [Class 105] [Also in Group XXXVIII] An apparatus for observing the passage of vehicles past a given point comprises a spring M fixed at one end and provided at its free end with a contact piece that completes. the electric circuit IC of a visual indicator or relay when the spring is oscillated by vibrations produced by passing traffic. The spring is mounted in a casing C secured to a metal tube T which is fixed rigidly in the ground at the point of observation. The apparatus may be used for observing road or rail traffic.
GB1522940A1940-10-141940-10-14Apparatus for observing the movement of traffic near a given point
ExpiredGB543322A
(en)