Optics: image projectors – Selective data retrieval
Patent
1985-02-22
1987-03-17
Haroian, Harry N.
Optics: image projectors
Selective data retrieval
353101, 353109, 353120, G03B 2310, G03B 2100
Patent
active
046503030
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a projector in accordance with the German Offenlegungsschrift specification No. 2,914,833 and facilities for storing photographic transparencies in accordance with the German Pat. No. 2,449,243.
The object of the present invention is to so develop the known designs that they meet present-day requirements with respect to economic production, simple operation and reliability in use in the best possible way.
The features of the invention are presented specifically in the claims, and the invention will be described in detail in the following description of the drawings. The claimed method of storing the photographic transparencies is more specially suited to the claimed projector, even although it may also be used in cases in which the projector departs from the described and claimed form in a reasonable manner. Transparencies stored in the claimed manner may be projected also for example using a projector in accordance with the above noted German Pat. No. 2,449,243.
LIST OF DRAWINGS
FIG. 1 is a perspective view of a projection apparatus in accordance with the invention.
FIG. 2 shows a view of the apparatus as in FIG. 1 seen from the back and generally in section.
FIGS. 3 shows, generally in the form of a section, the apparatus as in FIGS. 1 and 2 looking towards the right hand side thereof.
FIG. 4 is a plan view of the apparatus in keeping with the FIGS. 1 to 3, generally in section.
FIG. 5 is a view of the lens mount, used in the apparatus of FIGS. 1 to 4, in cross section and on a larger scale than in FIGS. 1 to 4.
FIG. 6 is a plan view as marked A in FIG. 5 to show the arrangement in this figure.
FIGS. 7 to 9 are sections as marked B, C and D in FIG. 5 of the part of the apparatus to be seen in FIG. 5.
FIG. 10 is a diagrammatic plan view to make clear the manner in which the lens mount is rocked.
FIGS. 11 to 14 represent diagrammatic views of another form of the invention, the lines A--A, B--B C--C and D--D being employed to identify the separate views.
FIG. 15 is a diagrammatic plan view of the other working example of the invention to explain the cord drive of the lens mount used therewith.
FIG. 16 shows the arrangement of FIG. 15 as seen looking towards the left hand end thereof.
FIG. 17 is an end-on view of the arrangement to be seen in FIG. 15 to explain the cord drums present therein.
FIG. 18 shows a part of a multiple mount made up of separate strips as a device according to the invention for storing transparencies, that are to be projected with the apparatus in keeping with FIGS. 1 to 17.
FIG. 19 is a vertical section taken on the line II--II of FIG. 1.
FIGS. 20 and 21 are cross sections taken on the lines III--III and IV--IV of FIG. 18.
FIG. 22 shows a detail of the arrangement in the form of a joint between the adjacent long sides of two strips on a larger scale and in perspective.
FIG. 23 is a plan view of the joint arrangement in the case of strips joined together as in FIG. 18.
FIG. 24 is a plan view of a joint connection as in FIG. 22.
The projection apparatus in accordance with the first working example of the invention is so designed that it is able accept strips of framed transparencies, that are connected together by articulating joints so as to form a chain, the links of such chain being formed by the articulated, framed transparencies, as is to be seen in FIGS. 18 to 24. At its two ends each strip 2a and 3a has a hole 19a, through which a pin 1 may be slipped. Such pins 1 are placed on the sides of two octagonal driving heads 2 and 3 turning on pins 4 and 5 on end plates 6 and 7, such end plates for their part being mounted on a base plate 8. The driving head 2 is able to be driven about the longitudinal axis of its pin 4 by means of a motor 9, that drives a gearwheel 10 meshing with a gearwheel 11 on the head 2. The rotation of the driving head 2 is transmitted by way of gear wheels 12 and 13 to the driving head 3, such wheels being keyed on a common shaft 14 and the gear wheel 12 cooperates with the gear wheel 11 and the gearwheel 13 cooperates with
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