GB1402204A - Apparatus for determining the speed of moving strip material - Google Patents

Apparatus for determining the speed of moving strip material

Info

Publication number
GB1402204A
GB1402204A GB621273A GB621273A GB1402204A GB 1402204 A GB1402204 A GB 1402204A GB 621273 A GB621273 A GB 621273A GB 621273 A GB621273 A GB 621273A GB 1402204 A GB1402204 A GB 1402204A
Authority
GB
United Kingdom
Prior art keywords
pressure
strip
speed
sleeve
mill
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
GB621273A
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.)
Davy Loewy Ltd
Original Assignee
Davy Loewy Ltd
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 Davy Loewy Ltd filed Critical Davy Loewy Ltd
Priority to GB621273A priority Critical patent/GB1402204A/en
Publication of GB1402204A publication Critical patent/GB1402204A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/26—Devices characterised by the use of fluids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1402204 Speedometers DAVY-LOEWY Ltd 16 April 1974 [8 Feb 1973] 6212/73 Heading G1K [Also in Division G3] Apparatus for determining the speed of strip material 5, Fig.1, moving in the direction of its length comprises a sleeve 1 which is supported in spaced relation to a stationary core 2 by pressure gas supplied through passages 4 and is rotated by engagement with the strip. A further passage 8 in the core receives the pressure gas from the space 3 and is connected to means for detecting variation of the gas pressure. One or more axial grooves 6 in the sleeve create sudden drops in pressure in passage 8 at a frequency which is dependent on the rotational speed of the sleeve. These pressure drops are picked up by the detecting means and hence the linear speed of the strip can be determined. The detecting means may be a transducer which produces an electrical signal representative of pressure. A respective apparatus of the invention may be arranged upstream and downstream of a mill for rolling metal strip, with the latter driving the respective sleeves, Fig.2 (not shown). Thus by comparing the number of pressure reductions occurring in the two apparatus, the ratio of ingoing and outgoing strip speed is determined and consequently the elongation of the strip as it passes through the mill can be found.
GB621273A 1973-02-08 1973-02-08 Apparatus for determining the speed of moving strip material Expired GB1402204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB621273A GB1402204A (en) 1973-02-08 1973-02-08 Apparatus for determining the speed of moving strip material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB621273A GB1402204A (en) 1973-02-08 1973-02-08 Apparatus for determining the speed of moving strip material

Publications (1)

Publication Number Publication Date
GB1402204A true GB1402204A (en) 1975-08-06

Family

ID=9810467

Family Applications (1)

Application Number Title Priority Date Filing Date
GB621273A Expired GB1402204A (en) 1973-02-08 1973-02-08 Apparatus for determining the speed of moving strip material

Country Status (1)

Country Link
GB (1) GB1402204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001081A1 (en) * 1977-09-02 1979-03-21 BASF Aktiengesellschaft Device for controlling the conveying speed of a web-like material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001081A1 (en) * 1977-09-02 1979-03-21 BASF Aktiengesellschaft Device for controlling the conveying speed of a web-like material

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee