GB445212A - An improved instrument for detecting the presence of stresses in glassware - Google Patents

An improved instrument for detecting the presence of stresses in glassware

Info

Publication number
GB445212A
GB445212A GB3350434A GB3350434A GB445212A GB 445212 A GB445212 A GB 445212A GB 3350434 A GB3350434 A GB 3350434A GB 3350434 A GB3350434 A GB 3350434A GB 445212 A GB445212 A GB 445212A
Authority
GB
United Kingdom
Prior art keywords
lid
eyepiece
mirror
lamp
carrying
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
GB3350434A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3350434A priority Critical patent/GB445212A/en
Publication of GB445212A publication Critical patent/GB445212A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/241—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet by photoelastic stress analysis

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

445,212. Polarizing-apparatus. HOLMES, J. G., 27, Dale End, and ENGLISH. J.. 441. Chester Road, Erdington, both in Birmingham. Nov. 21, 1934, No. 33504. [Class 97 (i)] An apparatus for detecting strains in glassware of the type in which light polarized by a concave reflector is observed through a Nicol prism comprises a cabinet a fitted with a hinged lid b and carrying a concave reflector h on its base, the lid b carrying an eyepiece k containing a Nicol prism i and tint-plate so that, when the lid is open the eyepiece receives light reflected from the mirror, the object to be viewed being placed between the mirror and the eyepiece. The cabinet may contain an inner compartment d fitted with a lamp c, a reflector e, and a transparent screen f so that light from the lamp may reach the eyepiece by reflection from a vertical cylindrical mirror g and mirror h, the lid carrying a switch to switch the lamp on or off when the lid is opened or shut.
GB3350434A 1934-11-21 1934-11-21 An improved instrument for detecting the presence of stresses in glassware Expired GB445212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3350434A GB445212A (en) 1934-11-21 1934-11-21 An improved instrument for detecting the presence of stresses in glassware

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3350434A GB445212A (en) 1934-11-21 1934-11-21 An improved instrument for detecting the presence of stresses in glassware

Publications (1)

Publication Number Publication Date
GB445212A true GB445212A (en) 1936-04-06

Family

ID=10353821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3350434A Expired GB445212A (en) 1934-11-21 1934-11-21 An improved instrument for detecting the presence of stresses in glassware

Country Status (1)

Country Link
GB (1) GB445212A (en)

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