GB689892A - Improvements in or relating to a stop mechanism for photographic sheet material - Google Patents

Improvements in or relating to a stop mechanism for photographic sheet material

Info

Publication number
GB689892A
GB689892A GB5361/49A GB536149A GB689892A GB 689892 A GB689892 A GB 689892A GB 5361/49 A GB5361/49 A GB 5361/49A GB 536149 A GB536149 A GB 536149A GB 689892 A GB689892 A GB 689892A
Authority
GB
United Kingdom
Prior art keywords
sheet material
movable member
perforations
detent
detents
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
GB5361/49A
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.)
Polaroid Corp
International Polaroid Corp
Original Assignee
Polaroid Corp
International Polaroid Corp
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 Polaroid Corp, International Polaroid Corp filed Critical Polaroid Corp
Publication of GB689892A publication Critical patent/GB689892A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/48Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
    • G03B17/50Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus
    • G03B17/52Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus of the Land type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Unwinding Webs (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Advancing Webs (AREA)

Abstract

689,892. Stop mechanism for photographic sheet material. INTERNATIONAL POLAROID CORPORATION. Feb. 28, 1949 [March 16, 1948], No. 5361/49. Class 98 (i). For use with sheet material having form. ations such as perforations, the mechanism comprises a rigid member for supporting the sheet material, a movable member mounted on the rigid member and spring biased thereto, and a detent yieldably mounted on the movable member, the detent being arranged to be kept depressed by contact with the sheet material and to permit unhindered movement of the latter until the detent engages a formation, when it can be advanced a limited distance along with the sheet material, and means, such as a lever attached to the movable member and extending through a casing for the mechanism, to release the detent from the formation so that it can return to a position for bearing against the sheet material. As shown in Figs. 3 and 6 for use with sheet material having a double series of spaced perforations 58, the movable member 66 is mounted under the rigid member 60 and a " yieldable mounting means" 74 pivoted at 78 to the movable member 66 permits a pair of detents 82 to project through perforations 70 of member 66 and 62 of member 60 to engage the perforations 58 of the sheet material and gradually stop movement of the latter. Lever 72 rigidly attached to the movable member 66 enables, by depression of push button 86, rocking of the movable member 66, against the bias of spring 90, to permit release of the detents 82 from perforations 58 of the sheet material. A pair of sheet materials may be mounted at positions 22, 24 (Fig. 3), and led between " pressure applying elements " 28, 30 so that movement of both sheet materials may be arrested by the detents engaging in perforations of one of them.
GB5361/49A 1948-03-16 1949-02-28 Improvements in or relating to a stop mechanism for photographic sheet material Expired GB689892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US689892XA 1948-03-16 1948-03-16

Publications (1)

Publication Number Publication Date
GB689892A true GB689892A (en) 1953-04-08

Family

ID=22085988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5361/49A Expired GB689892A (en) 1948-03-16 1949-02-28 Improvements in or relating to a stop mechanism for photographic sheet material

Country Status (1)

Country Link
GB (1) GB689892A (en)

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