GB1078387A - Time switches for transparency projectors - Google Patents
Time switches for transparency projectorsInfo
- Publication number
- GB1078387A GB1078387A GB17585/66A GB1758566A GB1078387A GB 1078387 A GB1078387 A GB 1078387A GB 17585/66 A GB17585/66 A GB 17585/66A GB 1758566 A GB1758566 A GB 1758566A GB 1078387 A GB1078387 A GB 1078387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slide
- changer
- april
- slider
- stop
- 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
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
-
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/001—Slide projectors
-
- 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
- G04F3/06—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with electric driving mechanisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
1,078,387. Optical projection apparatus. ERNST LEITZ G.m.b.H. April 21, 1966 [April 28, 1965], No. 17585/66. Heading G5C. [Also in Division H2] An adjustable timing switch (see Division H2) for use with a transparency projector to control the slide-changing magazine, comprises a rotary control element 3, Fig. 1, which is moved stepwise, by ratchet wheel 4, through an adjustable timing range into engagement with the changer control switch 18 and is then released for spring 10 return to its initial position against adjustable stop 26. The ratchet pawl 6 is mounted on a slider 7 reciprocated by a cam 17 of the slide changer drive and is released together with the locking pawl 11 by an edge 32 of a slide 33 engaged by a member 34 operated by the slide changer mechanism. A time-setting wheel 19 associated with a timer scale (20), Fig. 3 (not shown), carries a stop 25 adapted to disable the slider 7 at the zero-setting position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL50607A DE1244438B (en) | 1965-04-28 | 1965-04-28 | Time switch for slide projectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1078387A true GB1078387A (en) | 1967-08-09 |
Family
ID=7273563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17585/66A Expired GB1078387A (en) | 1965-04-28 | 1966-04-21 | Time switches for transparency projectors |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4327571B1 (en) |
| DE (1) | DE1244438B (en) |
| GB (1) | GB1078387A (en) |
-
1965
- 1965-04-28 DE DEL50607A patent/DE1244438B/en active Pending
-
1966
- 1966-04-21 GB GB17585/66A patent/GB1078387A/en not_active Expired
- 1966-04-28 JP JP2694566A patent/JPS4327571B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1244438B (en) | 1967-07-13 |
| JPS4327571B1 (en) | 1968-11-27 |
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