DE7837806U1 - SLIDE VIEWER OR SLIDE PROJECTOR - Google Patents

Description

• t ·

AG FA-G EVAERT AG

LEVERKUSEN

CAMERA-WERK MUNICH

* AT "NYÄeTBILUN"

Dec. 20, 1978

10-eh-ro CW 2188.5 PP / MP

Slide viewer or slide projector ι

The invention relates to a slide viewer or slide projector;

nit a recording area for loose stacking, to be presented i framed slides, with a Weehel slide that is on the side

of the receiving space a driver edge for moving the respective |

slides to be shown closest to him in the

1 window, and with a repellent between the 1

Recording room and the projection window for holding on to the front | f

feeding slide adhering further slides. |

When using framed slides of different thicknesses there is the problem that although the relatively thick plastic frames
on the one hand less sticking together than the thin cardboard frames and on the other hand, the height of the passage slot between the receiving room and the demonstration feaser can prevent one from being presented instead of the one

fill ■ I

OW 2188.5 PP / MP

or several slides stuck to it in the projection window
get that when using thin cardboard frames, however, several get into the projection window by being stapled together through the alternate slide and then only with difficulty brought back or not viewed due to mutual jamming
can be. To remedy this deficiency are already
resilient scrapers or scraper rollers have been arranged in the passage slot, which spring up when using thick slide frames, but should hold back thin slide frames lying above the slide to be transported in the receiving space when using thin frames. It has now been shown that these known stripping rollers do not function absolutely reliably

The invention is therefore based on the object of providing a slide viewer or projector of the type mentioned at the outset

Repellent for products that are not to be transported into the demonstration window!

To create slides that enables a smooth transport of slide frames of different thicknesses and at the same time ensures that only one slide frame can get from the recording room into the projection window.

According to the invention, this object is achieved by the features of the main claim solved. The subclaims contain further advantageous features according to the invention.

till II »

-5-

CW 2188.5 PP / MP

The invention is explained in more detail with reference to drawings. Show it

1 shows a section through parts of a slide viewer according to the invention during the transport of a slide into the projection window,
Pig. 2 shows an enlarged illustration of parts of the arrangement

according to Fig. 1,
FIG. 3 shows a section through the arrangement according to FIG. 1

perpendicular to the projection window plane and to the cutting plane according to FIG. 1.
ί

»The figures show a housing 1 with a slide viewer

a vertical receiving space 2 for loosely stacked, framed slides 3 and a vertical one provided underneath B-stacking room 4 for also loose stacking of slides 5 · Laterally next to the receiving space 2 and the stacking space 4- are a space 6 for the lighting, not shown, and a Shaft 7 »which is completed by viewing optics 15 at the top is, and between the two a demonstration window is arranged, which is determined by housing cutouts 1a, 1b.

-6-

·· till · »

• lit

CW 2188.5 PP / MP

A translucent one is located above the housing cutout 1s Plate 8, the surface of which determines the viewing plane on which a slide must lie in order to pass through the viewing optics to be clearly seen. Between the cutout 1b supporting housing wall 1c and the plate 8 there is a distance that is sufficiently large to allow a slide changing slide 9, which protrudes outward through a housing gap 1d and is provided between the receiving space 2 and the stacking space 4- and to switch the slides.

The interchangeable slide 9 has on its side facing away from the projection window on its side facing the receptacle 2 Surface has a driver edge 9a which, in its position pulled out of the housing 1, is behind the front window remote edge 3a of the lowest slide of the slide to be performed Attacks stack and this when inserting the interchangeable slide 9 into the housing in the demonstration window take part. There are between recording room 2 and the projection window Means 16 are provided to prevent more than one slide 3 from being inserted into the projection window by the changeover slide 9 is taken.

1 1111

> »J I

> »1 I.

• · · · ι ί ί

CW 2138.5 PP / MP

At a distance from the driver edge 9a, which is greater than §

is the width of a slide, there is at least one recess |

mounted in the change slide 9, in which a driver f

lever 10 is rotatably mounted about an axis 11. The driver f Lever 10 can assume two preferred positions, one in which one arm 10a over the slide surface in the

A projected area in the exhibition window to be moved slides, I while its other arm 10b supported on the on the plate 8 up i lying pre led slide 5, and, in the fixed to the housing by an inclined surface of the one arm 10a under ι the surface of the pusher 9 is pivoted and its other arm 10b engages behind the edge 5a of the slide 5 that is facing away from the stacking space 4.

If the interchangeable slide 9 is pulled out of the housing 1 as far as possible, its driver edge 9a engages the Edge 3a of the bottom lying in the stack to be presented Slide 3 on. When moving the interchangeable slide 9 in the direction of arrow 13, the bottom slide 3 is removed from the driver edge 9a in the demonstration window area *. The arm 10a is thereby supported by the Slide 5 shown in the area of slide 3 to be shown

CW 2188.5

in front of the edge 3b facing the projection window ■ pivoted. Now the change slide 9 is not completely swiveled into the projection window area, but early Pulled out of the housing 1 again against the direction of the arrow 13, this can be done in the demonstration window The slide to be transported does not fall into the first one and leads to pinching, but it is through the arm 10a back into the receiving space for the to be performed Taken slides. If the change slide 9 is on the other hand "up to the stop in the direction of the arrow moves, a stop swivels the arm 10a under the Slide surface, so that the slide 3 to be fed can fall onto the plate 8 when the slide 9 is moved back. At the same time, the arm 10b engages the one facing away from the stacking space 4 Edge 5a of the presented slide 5 and moves it into the stacking space 4 for the presented slides.

The repelling means 16 are sawtooth rollers attacking the edges of a slide 3 on both sides in the direction of arrow 15. Their axes 17 are mounted in resilient housing shells, the housing shells 18 against the interchangeable slide 9 show a voltage. The teeth of the

Il lift «MI ♦» «· ♦ ·

Il I § ·· # ··

Il t * · · t · ·

I Il It · · · · ·

· · · · ■ ·· ■ # ■■■

■ · »■ I 1 ■

■ ■ · · 1> Ι

■ · »· 111

■ · ■ »sii

CW 2188.5 PP / MP

Sawtooth rollers 16 have radial flanks 16a, which are adjoined by a short tangential surface 16b towards the receiving space 2. The tangential surface 16b is followed by an inclined flank 16c, which is at an angle cL · , which is between approximately 20 and 45 °, with respect to the tangent

against the axis 17 is too inclined. The distance a between the J

tangential surface 16b of a tooth and the outer end of the radial flank 16a of the next but one tooth is slight greater than the thickness of a small slide, the height of the radial flank 16a is about a quarter up to half the thickness of such a thin slide.

This design of the sawtooth rollers 16 ensures that the bottom slide 3 in the receiving space 2 » when it is gripped by the driver edge 9a at its edge 3a with its edge 3d facing the projection window runs onto the inclined flanks 16c of each of the lowest tooth of the sawtooth rollers 16, the rollers here in the direction of the projection window rotates and when the tangential surface 16b meets the next tooth of both rollers the spring action of the roller bearing increases, so that according to FIG. The tangential surface 16b of the now lowermost tooth on the

-10-

ft · «» I.

-10-

C ¥ 2188.5 PP / MP

· The bottom slide to be moved lies in the projection window.

Stick now. the slide 3 ¹ located above the vorzuführenden slide 3 at t vorzuführenden slide 3, so meets the edge 3b ¹ onto the inclined

'· Flank 16c ^{1 of} the second lowest tooth. This flank 16c ¹ has

ι such a strong inclination due to their angular position on the roller 16

opposite the sighting of the arrow 13 that the slide 3 ^{1 is} not] · able to raise the rollers 16 further. Because the tangential surface 16b rests on the one to be presented

Slide 3 and the tip of the radial flank 16a "of the next but one tooth on the top of the slide 3 to be presented

3 slides ¹ , the 3 ¹ slide cannot rotate the 16 aucti rollers. So one of the lowest to be demonstrated. Slide 3 sticking slide 3 ¹ is rejected by the formation of the rollers 16 as sawtooth rollers, which prevents two slides from being moved into the projection window at the same time when thin slides are used. On the other hand, the sawtooth rollers do not prevent the movement of a larger-thickness slide, located at the bottom of the stack to be presented, into the projection window, since the force to lift the cones 16 is sufficient in any case when the slide is carried along by the interchangeable cover 9 »

. I 1 ι t 'J lit

Il It 1 1 1 1 I ■

I Il Il t It Il Il ti I ti Il Il

Claims (2)

2 AG RAkSSVAERT AG ι ι ο eo · «··· LEVERKUSEN 'CAMERA-WERK MUNICH PATENT DEPARTMENT December 20, 1978 10-eh-ro CW 2188.5 PP / MP claims 1. Slide viewer or slide projector with a recording area for loosely stacking framed slides to be presented, with a changeover slide that has a carrier edge on the side of the recording space for moving the slide that is closest to it into the projection window, and with a repellent between the recording space and the projection window for preventing further slides adhering to the slide to be presented, characterized in that the repellent means consists of at least one at the end of the path of movement of the slide (3) to be presented or the change slide (9) on the same side of the change slide (9) as the stack is resiliently mounted sawtooth roller (15), the approximately radial tooth flanks (16a) of which are directed towards the projection window (1a, 1b, 8) in their half facing the interchangeable slide (9). -2- G 78 37 806.0. 01/22/79 CV 2188.5 2. Slide & fcrachter or slide projector according to claim 1, characterized characterized in that Ci6a) is attached to the radial tooth flank each tooth a tangential surface (16b) and to this one obliquely to the inside of the target at an acute angle inclined sloping flank (I6c) adjoins.