GB1338072A - Area measuring machines - Google Patents

Area measuring machines

Info

Publication number
GB1338072A
GB1338072A GB5805169A GB5805169A GB1338072A GB 1338072 A GB1338072 A GB 1338072A GB 5805169 A GB5805169 A GB 5805169A GB 5805169 A GB5805169 A GB 5805169A GB 1338072 A GB1338072 A GB 1338072A
Authority
GB
United Kingdom
Prior art keywords
sheet material
machine
wheel
area
cells
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
GB5805169A
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.)
Emhart Materials UK Ltd
Original Assignee
Emhart Materials UK 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 Emhart Materials UK Ltd filed Critical Emhart Materials UK Ltd
Priority to GB5805169A priority Critical patent/GB1338072A/en
Priority to FR7042510A priority patent/FR2072445A5/fr
Priority to DE19702058551 priority patent/DE2058551C3/en
Publication of GB1338072A publication Critical patent/GB1338072A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1338072 Area measuring machine TURNER MACHINERY Ltd 26 Nov 1970 [27 Nov 1969] 58051/69 Heading G1X A machine for measuring the area of sheet material e.g. leather, includes a series of wheels 46 arranged side by side to run, without slipping, over the sheet material fed between a driven transparent roller tube 14 and the wheels 46, each wheel having a series of equally spaced and diametrally opposed peripheral holes 56 such that when sheet material is passed through the machine it breaks one or more light beams passing through some of the holes between a fluorescent light tube 26 within the roller tube 14 and stationary photo-electric detector cells 76 associated with each wheel, the electrical signals produced by these breaks being sampled and summed to give a measure of the area of the sheet material. A further fluorescent light tube 96 and photo-electric detector cell 74 may be associated with each wheel, aligned diametrically opposite the first detector cell 76 to provide a coincidence method of ensuring the machine's correct functioning, a summing signal or pulse being provided when only one and not both detector cells sense light. Since the holes 56 in the periphery of each wheel 46 are spaced a unit distance apart and the wheels 46 are also spaced a unit distance apart, each integration pulse represents a unit of area, the sum of the pulses, processed by an electronic computing device 87, being shown on an indicator 112. The device 87 scans each pair of cells 74, 76 at a high frequency compared with the pulse duration to avoid under recording due to the simultaneous receipt of pulses from two or more pairs of associated cells. Clamping devices (92, 94), as shown in Fig. 3, prevent sheet material being fed backwards through the machine.
GB5805169A 1969-11-27 1969-11-27 Area measuring machines Expired GB1338072A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB5805169A GB1338072A (en) 1969-11-27 1969-11-27 Area measuring machines
FR7042510A FR2072445A5 (en) 1969-11-27 1970-11-26
DE19702058551 DE2058551C3 (en) 1969-11-27 1970-11-27 Area measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5805169A GB1338072A (en) 1969-11-27 1969-11-27 Area measuring machines

Publications (1)

Publication Number Publication Date
GB1338072A true GB1338072A (en) 1973-11-21

Family

ID=10480661

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5805169A Expired GB1338072A (en) 1969-11-27 1969-11-27 Area measuring machines

Country Status (3)

Country Link
DE (1) DE2058551C3 (en)
FR (1) FR2072445A5 (en)
GB (1) GB1338072A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51154565U (en) * 1975-06-03 1976-12-09

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156970A (en) * 1977-08-12 1979-06-05 Hope Henry F Apparatus for area measurement of elongated strips
US5042310A (en) * 1989-04-26 1991-08-27 Marinakis Michael Method for the determination of area of drawings and device for implementing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51154565U (en) * 1975-06-03 1976-12-09

Also Published As

Publication number Publication date
DE2058551A1 (en) 1971-06-09
DE2058551C3 (en) 1978-11-30
FR2072445A5 (en) 1971-09-24
DE2058551B2 (en) 1978-03-23

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee