Grieshaber & Co Ag Schaffhausen

Zellweger Uster Ag

Heinz Etter

Christophe Apotheloz

Werner Maag

Jürg Attinger

Willi Schlaepfer

A surgical instrument, includes an elongate housing having two housing parts. Disposed between the housing parts is a support arm having one axial end connected to the housing parts. A functional unit is secured to the other axial end of the support arm and includes a rod and an operating member acted upon by the rod, when the housing parts are squeezed together. A force-transmitting unit having an adjusting member is operatively connected to the rod, for translating a movement of the housing parts in a direction substantially transverse to the support arm, as the housing parts are squeezed together, into a linear axial movement of the adjusting member, to thereby actuate the operating member.

Ophthalmic microsurgical instrument

Ophthalmologic surgical instrument

Surgical instrument

The insertion of thread into a yarn tester is accomplished by a mechanism that includes a clamp (3) for the thread end and an insertion arm (14) mounted for pivoting movement about a fixed axis to contact a portion of the thread above the clamp and swing a loop portion of the thread down into the space between feed rollers and to present the loop to a take-over nozzle (13). The thread is transferred from the insertion arm to the nozzle (13) and is fixed until transfer in the clamp (3), so that the thread transfer takes place in the form of a loop. Consequently, the insertion arm (14) need have no special thread clamp and can be of correspondingly simple design. The pivoting movement of the insertion arm (14) requires only a simple drive, and the take-over of the loop-shaped thread (F) by the take-over member is carried out without difficulty.

Mechanism for inserting a thread into a yarn tester

Yarn tensile textile apparatus contains drawing-off means (11) for continuously drawing-off the test material (G) from a supply, two roller pairs (W, W') at a distance from one another for elongating the test material (G), and a store (12) arranged between the drawing-off means (11) and the first roller pair (W). Each roller pair (W, W') contains a transport roller and a pressing roller (4, 5; 4', 5') arranged so that a periodically opening and closing clamping gap for the test material (G) is formed between the rollers of each roller pair. Each transport roller (4, 4') includes a first circumferential part for bearing against its pressing roller (5, 5') and a second circumferential part at a distance from its pressing roller (5, 5'). The apparatus permits tensile testing according to the principle of constant rate of deformation, and the apparatus is insensitive to soiling and can be used for testing a variety of test materials.

Apparatus for determining strength properties of long textile test

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Wintertur, Switzerland

Heinz Etter