Abstract: An inventive apparatus for feeding rolled paper comprises rolled paper, a feed roller for feeding the rolled paper, a cutting unit for cutting the rolled paper, a driving source for actuating the feed roller and the cutting unit, a first gear train interposed between the driving source and the feed roller and a second gear train interposed between the driving source and the cutting unit. A reverse feed gear for transmitting driving force for a cutter gear to a feed gear is interposed between the first gear train and the second gear train and connects the first gear train with the second gear train when a movable cutter moves from a cutting position to a non-cutting position. Thereby, the feed roller is rotatively driven in the direction opposite to the feed direction by the driving force from the cutter gear.

Abstract: An apparatus with a cutting device for cutting-off pieces of a wire comb binding material for binding packs of sheets with marginal perforation. The pieces to be cut-off from the material shall have an entire number of teeth. The apparatus has a guide and a conveying wheel for the material. A brake or a catch provides for the pitch-correct cutting of the material. An adjusting device for adjusting the conveying length is provided in the drive connection to the conveying wheel. For this purpose a sector gear wheel comprises partial sector gear wheels. These are rotatable and capable of being fixed with respect to one another. Alternatively, an eccent arrangement may be used for adjusting the conveying length. The radial eccenter distance of the arrangement is adjustable. A chain driven thereby is itself driving a chain wheel, which on its turn drives a catch wheel for driving the conveying wheel.

Abstract: A gel slicer consisting of a support with a gel guide trough and a feed screw journalled parallel to the trough. A feed plunger assembly is threadedly engaged on the feed screw and has a plunger portion slidably engaged in the trough. The feed screw is intermittently driven by a power shaft via selectable identical-diameter gear discs with different-length tooth configuration for varying the increment of feed of the gel per revolution of the power shaft. The gear discs have smooth peripheral portions providing dwell periods of the feed screw. A pivoted transverse cutting blade is spring-biased toward cutting position over the trough and is held elevated by a follower lug engaging a cam on the power shaft, the cam having a blade-release notch. The cam is synchronized to release the cutting blade during the dwell period of the feed screw. Thus, the thickness of the slice depends on the amount of teeth on that gear disc which is selected to drive the feed screw.

Abstract: The device for cutting a web into sections according to cutting marks provided on the web comprises an advancing roller for advancing the web along a predetermined track, an electrooptical scanning device for reading respective cutting marks on the web and for generating corresponding output signals, a cutting mechanism arranged on the track behind the advancing roller and monitored by the scanning, a tension equalizing and loop forming device arranged on the track before the advancing roller and the scanning device to loop resiliently a portion of the web, an elliptical gear driving system for driving the advancing roller; and a magnetic coupling arranged between the driving system and the advancing roller to stop the feeding of the web in response to the output signals from the scanning device and to resume the feeding after the cutting mechanism has severed the marked web portion.