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GB1049779A - Improvements in or relating to testing devices for pneumatic tyres - Google Patents

Improvements in or relating to testing devices for pneumatic tyres

Info

Publication number
GB1049779A
GB1049779A GB3903562A GB3903562A GB1049779A GB 1049779 A GB1049779 A GB 1049779A GB 3903562 A GB3903562 A GB 3903562A GB 3903562 A GB3903562 A GB 3903562A GB 1049779 A GB1049779 A GB 1049779A
Authority
GB
United Kingdom
Prior art keywords
needle
piston
compressed air
plies
cylinder
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
GB3903562A
Inventor
Charles Arthur Horne
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber Co 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 Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB3903562A priority Critical patent/GB1049779A/en
Publication of GB1049779A publication Critical patent/GB1049779A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Tires In General (AREA)

Abstract

1,049,779. Testing pneumatic tyres. DUNLOP RUBBER CO. Ltd. Sept. 19, 1963 [Oct. 16, 1962], No. 39035/62. Heading B7C. A device for testing for looseness of the plies of a pneumatic tyre by detecting bulging of the plies when compressed air is injected between the carcass plies comprises a pneumatic piston and cylinder assembly and a hollow needle 20 having an axial bore for the supply of compressed air to the interior thereof, the needle 20 and piston 12 being reciprocable with respect to the cylinder 7. The needle 20 is seated in the axial bore 18a of a housing 18 and the housing 18 is screw-threaded to engage the screw-threaded end of a piston-rod 14 attached to the piston 12. A passageway 27 in the piston rod 14 connects the inlet 26 of the needle 20 to the interior of the cylinder 7 and thus to the source of compressed air. The free open end 25 of the needle projects through a cap 23 which is screwed on to the free end of the housing and acts as an adjustable stop. The piston 12 and thus the needle 20 are urged towards the closed end 8 of the cylinder by means of a helical spring 16 so that in its fully retracted position the needle is protected by a cylindrical shroud 28. The device is mounted on a bracket 2 formed of two plates 3a, 3b, the plate 3b being provided with an aperture which slidably receives the piston rod 14. The plate 3a is arranged to fit closely against the interior of the bead and sidewall portions 5 of a tyre, an adjustable stop 6 on the plate 3b being provided for engagement with a bead base. The needle 20 is forced into the sidewall of a tyre by supplying compressed air to the cylinder 7. Compressed air is then transmitted to a point between the plies of the carcass to test for looseness of the plies.
GB3903562A 1962-10-16 1962-10-16 Improvements in or relating to testing devices for pneumatic tyres Expired GB1049779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3903562A GB1049779A (en) 1962-10-16 1962-10-16 Improvements in or relating to testing devices for pneumatic tyres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3903562A GB1049779A (en) 1962-10-16 1962-10-16 Improvements in or relating to testing devices for pneumatic tyres

Publications (1)

Publication Number Publication Date
GB1049779A true GB1049779A (en) 1966-11-30

Family

ID=10407212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3903562A Expired GB1049779A (en) 1962-10-16 1962-10-16 Improvements in or relating to testing devices for pneumatic tyres

Country Status (1)

Country Link
GB (1) GB1049779A (en)

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