DE1132737B - Stand for photographic or cinematographic apparatus and geodetic instruments - Google Patents

Description

The invention relates to a stand according to the patent 1 077 882 for photographic or cinematographic apparatus and geodetic instruments, its Legs of U-profile rails that can be telescoped into one another and clamped against one another are formed, which from an arched or profiled central pitch and from two essentially exist parallel to each other or diverging side webs with retracted ends, wherein on the drawn-in ends of each of the inner legs via clamping means, which are in one of the legs surrounding reinforcing sleeve are mounted, exerted a pressure acting in the direction of the central web is so that the profile of the inner leg in the inner groove of the outer leg, against moving is secured or wiggled, pressed in.

The aim of the invention is to further improve the clamping device in such tripods. It is achieved in that the clamping means consist of a pressure piece with beveled side surfaces exist, which is actuated by an eccentric lever, which in one of the legs completely or partially enclosing Reinforcement sleeve is mounted on the inside of the tripod leg. In further training of the Invention, the eccentric lever has a slightly larger width than the reinforcing sleeve, and the over the side surfaces of the eccentric lever protruding from the reinforcement sleeve are for the better Corrugated handling.

A tripod is known in which an eccentric lever via a non-wedge-shaped in a breakthrough in the central web of the outer leg arranged pressure piece on the central web of the inner leg presses. The effect of this clamping device is very different from that of the present invention. The known tripod does not have any of the advantages of the main patent. As a special one Another disadvantage is that the manufacturing tolerances of the profile legs or during use taking place compression of the converging side webs of the profile, especially in the middle of the Leg, can not be fully balanced, so that not in every extended position of the leg necessary clamping effect is achieved.

The drawing shows a perspective view in section of a preferred embodiment of the invention with released clamping.

Here, 1 represents an outer and 2 an inner tripod leg which is U-shaped in cross section and has parallel legs Side webs and retracted web ends represent, the outer leg 1 at its lower end of a reinforcing sleeve 3 is enclosed. These

for photographic or cinematographic
Apparatus and geodetic instruments

Addendum to patent 1,077,882

Applicant:

Linhof Nikolaus Karpf K. G.,

Precision Camera Works,
Munich 25, Rupert-Mayer-Str. 45

Nikolaus Karpf, Großhesselohe near Munich,
has been named as the inventor

carries on its inside a preferably elongated recess into which a pressure piece 4 made of light metal is used, the side surfaces are bevelled. They lie at the drawn-in ends of the inner Leg 2. In the reinforcement sleeve 3 is on the pressure piece 4 an eccentric lever 5 to one Pin 6 rotatably mounted. When the eccentric lever 5 is actuated, it presses on the pressure piece 4. As a result of the pressure exerted in this way, the limb 2 with its central web is against the central web of the limb 1 pressed and thus achieved the desired stability. Of course they can Legs 1 and 2 also run diverging with their side webs, in which case the jamming already occurs can occur on the side surfaces and the central webs no longer touch in the clamped position.

Since both the eccentric lever 5 and the pressure piece 4 are made of light metal and that Sliding light metal parts on one another under pressure is very disadvantageous, is between the eccentric lever 5 and pressure piece 4 a steel washer 7 enclosed.

The shape of the eccentric lever 5 is chosen so that its actuation from the outside is as convenient as possible. For this purpose, it is held wider than the reinforcing sleeve 3, and that over the side surfaces of the same protruding side surfaces 8 of the eccentric lever 5 are corrugated so that the fingertips a find a good hold.

209 618/99

Claims (3)

PATENT CLAIMS: 1. Stand for photographic or cinematographic apparatus as well as geodetic instruments, the legs of which are formed by U-profile rails that can be telescoped into one another and clamped against one another, which consist of a curved or profiled central web and two substantially parallel or diverging side webs with drawn-in ends, whereby a pressure acting in the direction of the central web is exerted on the drawn-in ends of the inner leg via gill means, which are mounted in a reinforcing sleeve surrounding the leg, so that the profile of the inner leg enters the inner groove of the outer leg, against displacement or Wiggling secured, is pressed in according to patent 1077 882, characterized in that the clamping means consist of a pressure piece (4) with beveled side surfaces, which is actuated by an eccentric lever (5) which completely or partially encloses the legs Reinforcement sleeve (3) is mounted on the inside of the tripod leg. 2. Stand according to claim 1, characterized in that the eccentric lever (5) has a somewhat has greater width than the reinforcing sleeve (3) and that the side surfaces projecting beyond the side surfaces of the reinforcing sleeve (3) (8) of the eccentric lever (5) are grooved for better handling. 3. Stand according to claim 1 and 2, characterized in that the pressure piece (4) consists of one Light metal, preferably made of aluminum. Considered publications:
German interpretative document No. 1 004 433. Legacy Patents Considered:
German Patent No. 1077 882. 1 sheet of drawings © 209 618/99 6.62