Abstract: A handle is provided for attachment to a medical endoscope for advancing instrumentalities through the instrument channel of the endoscope. The handle is adapted for use with instrumentalities requiring multiple longitudinal strokes to be performed in a predetermined sequence. A detent mechanism is provided to assure that a first stroke is completed before the next succeeding stroke begins. The invention as disclosed is used to operate an endoscopic sewing machine.

Abstract: A multiple disc clutch has a multiple component clutch housing which is adapted for oil lubricating and cooling of the clutch discs and plates during operation. Concentric driven shafts extend into the clutch housing from the rearward end thereof with the inner shaft extending into a driving relation with a counter bore in the forward component of the clutch housing. The outer shaft has a splined outer end on which is drivingly mounted the driven disc hub. The forward end of the hub is piloted in a recess in the forward component of the clutch housing, and a wave washer reacting against another portion of the clutch housing biases the driven disc hub into piloting engagement within the recess. On the driven disc hub are drivingly mounted the driven discs; the latter being interleaved with the driving plates of the clutch. Both the discs and the plates are disposed within the clutch housing.

Abstract: A self adjusting device interposed in the lever system of a friction clutch is disclosed. The device operatively connects a threaded adjusting ring and an axially shiftable actuating collar such that wear occurring in the friction surfaces of the clutch is automatically taken up during operation of the clutch. The self adjusting device includes a mounting bracket secured to the clutch cover. The mounting bracket includes a central U-shaped portion and a pair of flange portions, each extending outwardly from an end of the opposing sides of the U-shaped portion. A pin is retained in the opposing sides of the U-shaped portion of the mounting bracket. The pin rotatably carries a pair of hub members which effect the self adjustment of the clutch to compensate for wear of the friction surfaces. The U-shaped portion of the mounting bracket permits visual confirmation of correct installation and function of the self adjusting device.