GB694507A - Improvements relating to selenium and other light sensitive cell control means - Google Patents

Improvements relating to selenium and other light sensitive cell control means

Info

Publication number
GB694507A
GB694507A GB2111350A GB2111350A GB694507A GB 694507 A GB694507 A GB 694507A GB 2111350 A GB2111350 A GB 2111350A GB 2111350 A GB2111350 A GB 2111350A GB 694507 A GB694507 A GB 694507A
Authority
GB
United Kingdom
Prior art keywords
cell
photo
casing
selenium
control means
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
GB2111350A
Inventor
Stanley Woodward
Wilfred Francis Richard Morgan
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.)
Baker Perkins Ltd
Original Assignee
Baker Perkins 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 Baker Perkins Ltd filed Critical Baker Perkins Ltd
Priority to GB2111350A priority Critical patent/GB694507A/en
Publication of GB694507A publication Critical patent/GB694507A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details

Landscapes

  • Control Of Conveyors (AREA)

Abstract

694,507. Photo-electric control systems. BAKER PERKINS, Ltd. July 17, 1951 [Aug. 25, 1950], No. 21113/50. Class 40 (iii). The transparent wall of a casing containing a photo-cell is arranged to be swept by an article which interrupts the light beam to the cell. The invention is described with reference to the sheet folding machine described in Specification 618,157, [Group VIII]. As shown, the cell is mounted in a housing 2 which is connected by a diverging casing 1 to the glass sheet 6 which is arranged to be slightly above the level of the conveyer belt carrying the sheet. The lower end of the casing is provided with a flange 1a which extends into a flange 5a on the photo-cell housing. Alternatively the lower end of the casing may be provided with a felt washer which fits in a recess in the photo-cell housing.
GB2111350A 1950-08-25 1950-08-25 Improvements relating to selenium and other light sensitive cell control means Expired GB694507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2111350A GB694507A (en) 1950-08-25 1950-08-25 Improvements relating to selenium and other light sensitive cell control means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2111350A GB694507A (en) 1950-08-25 1950-08-25 Improvements relating to selenium and other light sensitive cell control means

Publications (1)

Publication Number Publication Date
GB694507A true GB694507A (en) 1953-07-22

Family

ID=10157437

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2111350A Expired GB694507A (en) 1950-08-25 1950-08-25 Improvements relating to selenium and other light sensitive cell control means

Country Status (1)

Country Link
GB (1) GB694507A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927218A (en) * 1958-09-26 1960-03-01 Linderman Engineering Company Pinhole detector
US2932747A (en) * 1957-07-23 1960-04-12 United States Steel Corp Self-cleaning light receiver for pin hole detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932747A (en) * 1957-07-23 1960-04-12 United States Steel Corp Self-cleaning light receiver for pin hole detector
US2927218A (en) * 1958-09-26 1960-03-01 Linderman Engineering Company Pinhole detector

Similar Documents

Publication Publication Date Title
GB694507A (en) Improvements relating to selenium and other light sensitive cell control means
GB1120451A (en) Apparatus for sensing the position of a boundary surface
USD189996S (en) Bottle
GB696432A (en) Improvements in or relating to photo-copiers
GB899856A (en) Improvements in inspection of sheet materials by photo-electric means
CA463391A (en) Photoelectric turbidimeter
GB752853A (en) Improvements in cylindrical scales
GB638236A (en) Improvements in opisometers
GB714217A (en) Improvements in or relating to rotary water meters
GB692338A (en) Device for reading illuminated scales, the image of which formed on frosted glass
GB697253A (en) Electrical proximity switches
GB856617A (en) Improvements in and relating to indicating the level of ion-exchange material in a container
GB833951A (en) Improvements in surface grinders
CA466648A (en) Receptacle housing
GB777747A (en) Improvements in photocells
CA462739A (en) Process for outgassing photocells containing antimony
GB828864A (en) Improvements in or relating to roof, window and like lights
CA442009A (en) Postal franking machine
GB893177A (en) Improvements in or relating to textile hopper feeding machines
CA434378A (en) Postal franking machine
GB1023091A (en) Liquid level indicating systems
AU3616850A (en) Improvements relating to spring weighing machines
GB710448A (en) Improvements in or relating to radio receivers
GB703206A (en) Improvements in or relating to roof lights
FR986578A (en) Automatic photoelectric cell control device intended to maintain a given level of illumination or to proportion it to the external illumination