(19)
(11) EP 0 319 180 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.03.1990 Bulletin 1990/11

(43) Date of publication A2:
07.06.1989 Bulletin 1989/23

(21) Application number: 88310956.3

(22) Date of filing: 21.11.1988
(51) International Patent Classification (IPC)4: B07C 5/12, F16H 25/00, F16H 25/14
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 02.12.1987 US 128357

(71) Applicant: EMHART INDUSTRIES, INC.
Towson, Maryland 21204 (US)

(72) Inventor:
  • Shay, Timothy W.
    Horseheads New York 14845 (US)

(74) Representative: Randall, John Walter et al
Emhart Patents Department Emhart International Ltd. 177 Walsall Road
Birmingham B42 1BP
Birmingham B42 1BP (GB)


(56) References cited: : 
   
       


    (54) Improved mechanism for glass container inspection apparatus


    (57) An improved mechanism for coordinating the tran­sport of a glass container through an inspection zone with the movement of an inspection head rela­tive to the container. In a plug gager, a carriage (16) which holds the plug gage (13) is moved in the direction of container travel by a cam (90), while an eccentrically-mounted bearing moves the plug gage vertically to penetrate the container finish. The invention provides an improved cam profile (95) to provide an increased maximum stroke (amount of gage penetration) making the apparatus adaptable to a wider range of container sizes. Relative to prior art cams for apparatus of this type, the constant velocity segment of the cam motion is extended. A similar adaptation to a leak detector utilizing this cam-driven carriage and inspection head arrangement lengthens the segment of each cycle during which inspection occurs, increasing the sensitivity of the system. In a check detector utilizing this arrange­ment, this improved cam-driven mechanism provides increased inspection speed and accuracy, and allows better stopping of containers at high speeds.







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