GB190929110A - Improvements in or relating to Apparatus for Automatically Projecting Pictures or Advertisements. - Google Patents
Improvements in or relating to Apparatus for Automatically Projecting Pictures or Advertisements.Info
- Publication number
- GB190929110A GB190929110A GB190929110DA GB190929110A GB 190929110 A GB190929110 A GB 190929110A GB 190929110D A GB190929110D A GB 190929110DA GB 190929110 A GB190929110 A GB 190929110A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- chains
- shutter
- cam
- advertisements
- 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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
- G09F11/24—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the advertising or display material forming part of a moving band, e.g. in the form of perforations, prints, or transparencies
- G09F11/26—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the advertising or display material forming part of a moving band, e.g. in the form of perforations, prints, or transparencies of an endless band
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
29,110. Betts, W. H. Dec. 13. Optical - projection apparatus.-Pictures, advertisements, and the like are intermittently projected from plates, carried on endless-chains a, Fig. 1, by means of a spring, energized by a motor; a shutter for intermittently obstructing the projection-aperture may be operated by a face cam. The slides are held in side pieces c<1>, c<2>, hinged together at edges 3, and containing a slide-gripping spring c<6>. The two sides c<1>, c<2> are held together by a hinged clip c<4>. A motor or the like is geared to a wheel i<1>, on the shaft of which are a gear-wheel i<Î>, with a cam - groove for operating shutter - controlling levers o<2>, and a cam l, which operates a lever m, pivoted at m<1>, whereby a toothed quadrant n is caused to wind a spring e, Fig. 3, connected to a carrier g<1> of a pawl g. When the tension of the spring e is relaxed, the pawl g drives the pinions that support the chains a. The chains a are operated while the shutter in the case p is obstructing the path of projection.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB190929110T | 1909-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB190929110A true GB190929110A (en) | 1910-12-13 |
Family
ID=32559279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB190929110D Expired GB190929110A (en) | 1909-12-13 | 1909-12-13 | Improvements in or relating to Apparatus for Automatically Projecting Pictures or Advertisements. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB190929110A (en) |
-
1909
- 1909-12-13 GB GB190929110D patent/GB190929110A/en not_active Expired
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