DE441663C - Photographic camera with telescopic extension - Google Patents

Description

GERMAN EMPIRE

ISSUED H. MARCH 1927

REICH PATENT OFFICE

PATENT LETTERING

- JVe 441663 - CLASS 57a GROUP

(T 298381x1570})

Giuseppe Tartara in Turin, Italy.

Photographic camera with telescopic extension. Patented in the German Empire on January 27, 1925.

According to the Union Treaty of June 2, 1911, priority is due to this application of the application in Italy on May 30, 1924.

The invention relates to photographic cameras with telescopic extension, parts thereof Take up sealing inserts between two ring projections.

Such cameras are known. With these, however, every telescope part has such Ring projections and sealing inserts in between and provided with stops, which prevent the parts from being pulled out and pushed in too far.

Since in the known cameras the ring-shaped projections with the sealing

position on flanges to be fastened to the telescopic tube by screws sinidj all of these must first be removed when disassembling or assembling or be attached later.

To avoid this, are according to the invention the ring projections with the sealing insert alternately on the inside and outside of separated by an intermediate tube Telescopic tubes attached, while the intermediate tube is only provided with stops is.

This training also has the advantage

that in the manufacture of the telescopic tubes only the cylindrical surfaces of the intermediate tubes, which slide on seal, need to be machined and slid. Through this the production is considerably simplified.

In the drawing there is an embodiment the photographic camera nadh of the invention shown schematically.

Fig. Ι is' a partially cut Side view of the apparatus in working position.

Fig. 2 is a similar view at rest.

Fig. 3 is a detail of the arrangement of the tubes carrying the optics of the lens. A metal flange 2 is arranged at the front of the box 1 of the camera, the hub 3 of which has two small flanges 4 inside, between which a pack 5 from Saint o ·. Like. Arranged is to prevent light from entering.

In the flanges 2 and 4, a tube 6j slides through an inside 'of the box lying federal government 7 is prevented from stepping out completely.

A groove 8 (Fig. 1), in which a projection fixed on the flange 2 engages, prevents the rotation of the tube 6.

At the end of the tube 6 is' an inside directed narrow flange 9 available as a guide and stop for a pipe 4-5 10, which is also used with a collar 11 is provided to limit the pull-out and a guide collar 12, between which a j Velvet seal 13 lies.

The tubes 6 and 10 each have a groove 8

or 14, in which a head start!

intervenes as a rotation lock. I.

At the end of the tube 10 is generally i

the optics 15 of the lens is mounted, but there can be another guide and seal, Device can be provided to enclose a third telescopic tube and so on. Laterally on the Tube ι ο is engraved with a scale for setting the focal length.

The rear sight, which is also the subject of the invention, consists of a stand 16 fastened in a hinge-like manner to the box 1 with a sight hole 17 and a spring, which strives to get the stand in the working position shown in Fig. ι. The stand is also equipped with a hook 18 which engages in a slide 19, when its outer end 20 is pushed outwards (Fig. 2). If you press that At the end of 20, the hook 18 is released and the stand 16 folds open.

A concave lens 21 is located in a cover τ, ι fastened in a hinge-like manner on the box 1 and which is held by a spring in the position shown in FIG. 1, in which the optical axis of the lens 21 passes through the opening 17.

In the closed position (Fig. 2) the cover 22 covers the lens 15 and engages a ratchet 23 of a known type. If you press the latter, the lid jumps 22 under the pressure of his spring in the working position, with its lower part the slide 19 pushes back and the stand 16 folds open.

This photographic camera has an advantage over similar devices a simple and cheap design with easy and quick handling, at the same time Space saving and low weight.

Claims (2)

Patent claims: i. Photographic camera with telescopic extension, the parts of which take up sealing inserts between two ring projections, characterized in that these projections with the sealing insert alternately on the inner and Outside of telescopic tubes (3, 10) separated by an intermediate tube attached are, while the intermediate tube (6) is only provided with stops. 2. Camera according to claim 1, characterized in that in the rest position of the camera, the telescopic parts are protected by a foldable cover (22) which is automatically brought into the working position in the open position of the cover. '.. - 1 sheet of drawings.