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GB701935A - Improvements in or relating to screens for presses or like machinery - Google Patents

Improvements in or relating to screens for presses or like machinery

Info

Publication number
GB701935A
GB701935A GB13274/51A GB1327451A GB701935A GB 701935 A GB701935 A GB 701935A GB 13274/51 A GB13274/51 A GB 13274/51A GB 1327451 A GB1327451 A GB 1327451A GB 701935 A GB701935 A GB 701935A
Authority
GB
United Kingdom
Prior art keywords
photo
lamps
cell
cells
guarded
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
GB13274/51A
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.)
Radiovisor Parent Ltd
Original Assignee
Radiovisor Parent 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 Radiovisor Parent Ltd filed Critical Radiovisor Parent Ltd
Priority to GB13274/51A priority Critical patent/GB701935A/en
Publication of GB701935A publication Critical patent/GB701935A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/144—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using light grids

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Audible And Visible Signals (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

701,935. Photo-electric machine guards. RADIOVISOR PARENT, Ltd., IVE, G. A. G., and HUMBER, E. J. Aug. 27, 1952 [June 5, 1951], No. 13274/51. Class 40 (3) A photo-electric machine guard comprises a number of photo-cells mounted vertically above each other at one side of the space to be guarded and a corresponding number of lamps at the other, each cell being provided with a diaphragm so adjustable that each cell receives light from the same number of lamps. As shown eight 6-volt lamps 5 are mounted at one side of a press to be guarded and, with lenses 6, produce a light screen which is received by lenses 8 positioned in front of eight photo-electric cells 7. The cells are arranged in two series-connected sets of four to control a relay which in turn controls the press operating mechanism. In order that each cell shall receive light from a given number of lamps each cell 7 (Fig. 4) is positioned behind a slot 9 the length of which is adjustable by alteration of the position of plates 10 which are provided with slots 17 which slide over bolts 18 and which may be clamped in position by means of butterfly nuts.
GB13274/51A 1951-06-05 1951-06-05 Improvements in or relating to screens for presses or like machinery Expired GB701935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB13274/51A GB701935A (en) 1951-06-05 1951-06-05 Improvements in or relating to screens for presses or like machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13274/51A GB701935A (en) 1951-06-05 1951-06-05 Improvements in or relating to screens for presses or like machinery

Publications (1)

Publication Number Publication Date
GB701935A true GB701935A (en) 1954-01-06

Family

ID=10019992

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13274/51A Expired GB701935A (en) 1951-06-05 1951-06-05 Improvements in or relating to screens for presses or like machinery

Country Status (1)

Country Link
GB (1) GB701935A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036219A (en) * 1958-05-01 1962-05-22 Arthur V Thompson Passive radiation proximity detector
US3047723A (en) * 1958-12-31 1962-07-31 Aircraft Armaments Inc Photoelectric hit detector system
ITMI20111953A1 (en) * 2011-10-27 2013-04-28 Monica Aliprandi SAFETY BARRIER OF THE IMMATERIAL TYPE WITH CROSSED FANS.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036219A (en) * 1958-05-01 1962-05-22 Arthur V Thompson Passive radiation proximity detector
US3047723A (en) * 1958-12-31 1962-07-31 Aircraft Armaments Inc Photoelectric hit detector system
ITMI20111953A1 (en) * 2011-10-27 2013-04-28 Monica Aliprandi SAFETY BARRIER OF THE IMMATERIAL TYPE WITH CROSSED FANS.

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