GB919123A - Automatic slide-change mechanisms for slide projectors - Google Patents

Automatic slide-change mechanisms for slide projectors

Info

Publication number
GB919123A
GB919123A GB4195760A GB4195760A GB919123A GB 919123 A GB919123 A GB 919123A GB 4195760 A GB4195760 A GB 4195760A GB 4195760 A GB4195760 A GB 4195760A GB 919123 A GB919123 A GB 919123A
Authority
GB
United Kingdom
Prior art keywords
crank
slide
lever
elastic coupling
transport mechanism
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
GB4195760A
Inventor
Erich Korf
Siegfried Zeibig
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.)
Kamera und Kinowerke Dresden VEB
Original Assignee
Kamera und Kinowerke Dresden VEB
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 Kamera und Kinowerke Dresden VEB filed Critical Kamera und Kinowerke Dresden VEB
Priority to GB4195760A priority Critical patent/GB919123A/en
Publication of GB919123A publication Critical patent/GB919123A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B23/00—Devices for changing pictures in viewing apparatus or projectors
    • G03B23/02—Devices for changing pictures in viewing apparatus or projectors in which a picture is removed from a stock and returned to the same stock or another one; Magazines therefor
    • G03B23/04—Devices for changing pictures in viewing apparatus or projectors in which a picture is removed from a stock and returned to the same stock or another one; Magazines therefor with linear movement
    • G03B23/046—Picture changing devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Labeling Devices (AREA)

Abstract

919,123. Slide changing mechanisms. KAMERAUND KINOWERKE DRESDEN VEB. Dec. 6, 1960, No. 41957/60. Class 97 (1). In an automatic slide-change mechanism for slide projectors, comprising a reciprocable slide transport mechanism, a crank mechanism drivable by means of a motor through a gear mechanism and an elastic coupling device arranged between said crank mechanism and said transport mechanism for transmitting the movement of the crank mechanism to the transport mechanism, said elastic coupling includes two elements for connection, respectively, to the crank mechanism and the transport mechanism, which elements are provided with noses or dogs engageable with a driving member arranged between said elements under the action of a torsion spring carried by said elements. As shown (Fig. 1), a motor 1 is connected by way of gears 2 and 3, a crank 4, a link 5, a crank 6 and an elastic coupling 34, 39 to a lever 8 one end of which co-operates with slides (not shown) to push them into a projection gate 41 along a channel 13 and the other end of which is coupled through a link 9 to a lever 10 pivoted at 11 and having a pin 12 for returning said slides along said channel out of said projection gate. The elastic coupling (Figs. 2 and 3), comprises two sleeves 30, 32 which are freely mounted on a spindle 7, are provided with dogs 31, 33 respectively and are rigidly connected with the members 6 and 8, respectively, said spindle 7 having a pin 39 engaged at opposite ends by said dogs under torsion of a helical spring 34, one end of which engages in a hole 40 in the crank 6, the other end of which engages in a hole 38 in the lever 8 and the middle portion 37 of which is looped over an end 39 of said pin 40. Provision of this elastic coupling reduces jerks in the event of jamming of the changing device and also allows the crank 6 to continue operating in the event of such jamming. A lever 17, coupled to the lever 10 by means of a pin-and-slot coupling 15, 16 and pivoted at 18, enables manual adjustment of the slide transport mechanism to be effected (after jamming, for example) this manual adjustment being facilitated by a part 20 which is releasably held in the position shown and may be pivoted out of the way (Fig. 4, not shown) when not required.
GB4195760A 1960-12-06 1960-12-06 Automatic slide-change mechanisms for slide projectors Expired GB919123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4195760A GB919123A (en) 1960-12-06 1960-12-06 Automatic slide-change mechanisms for slide projectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4195760A GB919123A (en) 1960-12-06 1960-12-06 Automatic slide-change mechanisms for slide projectors

Publications (1)

Publication Number Publication Date
GB919123A true GB919123A (en) 1963-02-20

Family

ID=10422151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4195760A Expired GB919123A (en) 1960-12-06 1960-12-06 Automatic slide-change mechanisms for slide projectors

Country Status (1)

Country Link
GB (1) GB919123A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367180A1 (en) * 1988-10-31 1990-05-09 Eastman Kodak Company Slide changing apparatus with slide jam protection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367180A1 (en) * 1988-10-31 1990-05-09 Eastman Kodak Company Slide changing apparatus with slide jam protection
WO1990005323A1 (en) * 1988-10-31 1990-05-17 Eastman Kodak Company Slide changing apparatus with slide jam protection

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