Abstract: A layer piercing paper punch is disclosed, in which a plurality of cutting hole plates is provided on a base between the location of a cutting hole and an upper cutter bar for perforation. Each of the cutting hole plates has a sharp-pointed portion on the front end and a cutting hole near the middle part. The cutting hole plates lying parallel to the surface of the base and in an overlapping position are always maintained by a position-fixing member with cutting holes in alignment with the upper cutter bar and the lower cutting hole on the base thereby enabling the cutting hole plates to perform up and down movement without any movement on the sides during the perforation of a paper file.

Abstract: An improved adjustable workpiece-supporting fence assembly for a compound miter saw, or other work-performing device, includes a fixed fence portion fixedly interconnected with the base of the device, with the fixed fence portion being disposed on one side of the saw blade, the workpiece cutter, or other such device for performing a working operation on a workpiece. A movable fence portion is selectively and laterally movably interconnected with the base on the opposite side of the work-performing blade or cutter and is laterally spaced from the fixed fence portion. The base or other portion of the device includes a fence-supporting portion fixedly disposed on the same opposite side of the blade or cutter, and both fixed and movable clamping arrangements are provided for releasably clamping the movable fence portion at any of a number of adjusted lateral positions therein, with the movable clamping arrangement being movable with the movable fence.

Abstract: A slicing knife comprises a handle and a blade extending from one end of the handle where the blade is generally rectangular in shape and has opposed edges honed to a knife edge. Formed into the thickness dimension of the blade are a plurality of zones of reduced thickness which may be longitudinally-spaced apertures which are separated from one another by ribs having a generally rhombic cross-section. The blade tapers from a maximum thickness dimension in each direction in creating the knife edge and in approaching the zones of reduced thickness. The thickness of the ribs exceeds the blade thickness such that when it is pressed, for example, through a block of cheese, the cheese only contacts the blade along the line segments defined by the corners of the rhombic ribs.

Abstract: In a folding knife or hand tool having a handle and a blade pivotally connected to the handle, a spring loaded crossbolt 1 is fitted to the blade tang. One end of crossbolt 1 protrudes through an arcuate slot in the handle, crossbolt slot 32. A locking collar 19 on crossbolt 1 engages locking counterbores A 34 and B 36 located on the blade side of the opposite ends of crossbolt slot 32. When finger pressure is applied to the end of crossbolt 1, locking collar 19 is forced to disengage locking counterbore A 34 and retreat to a relieved area on the blade, collar relief 52. This permits the blade to be extended by forward finger pressure on crossbolt 1. When the blade is fully extended, spring pressure forces locking collar 19 into the opposite locking counterbore B 36, thus locking the blade. Reversing the sequence will close and lock the blade.

Abstract: A rotating cropping and sampling shear for rapidly running rolling stock, particularly for wire and/or bar steel is disclosed. The shear has a blade support rotatable in a shear housing and is constructed in a hollow-cylindrical manner. The shear has a ring blade whose cutting edge rotates at the hollow-cylindrical wall of the blade support, a blade drum which is axially spaced from the blade support and is rotatable in the same rotational plane and includes a ring blade arranged at the outer circumference whose cutting edge runs along the outer wall of the drum. The rolling stock is guided in the space between the blade support and the blade drum. The blade support or the blade drum can be displaced axially relative to one another and one inside the other by a displacing device.

Abstract: A comminuting device for breaking-up charge bodies of frangible material to free their value content and to reduce it to a desired size employs an upright enclosure into which charge bodies are fed so as to minimize in-air flow and to provide a steady stream of the bodies into the upper end of a centrally positioned downflow feed duct from which a series of horizontally, radially outwardly extending and vertically spaced-apart discs of a rotating assembly are suspended to define a central chamber selection passageway that is open at its upper end to the lower end of the duct, and at its bottom end through a grating to a motor drive compartment into which a fluid is introduced under positive pressure.

Abstract: An indexing coupling for a drill includes a hollow inner race, a hollow outer race, and a sleeve member. The hollow inner race and hollow outer race are affixed to one another by a plurality of ball members which are positioned by a plurality of detents in the hollow inner race. The balls also extend into holes in the hollow outer race. When the balls are positioned within the holes in the hollow outer race and within the detents in the hollow inner race by the sleeve member, the hollow inner race and the hollow outer race are rigidly connected one with respect to the other. When the sleeve member is moved the ball members become disengaged from the hollow inner race thus allowing indexing of the outer race with respect to the hollow inner race. This indexing of the hollow outer race with respect to the hollow inner race allows selective rotatable indexing of the drill housing with respect to the nose piece.

Abstract: A power tool has a tool spindle, a hammer unit, a drive including a motor having a motor driven shaft, a motion conversion gear for generating reciprocating piston movement, and a disengageable coupling located between the motor and the motion conversion gear and engaging the hammer unit. The coupling has two coupling parts which held apart, one of the coupling parts being axially fixed and another of the coupling parts being axially movable and arranged on the motor-driven shaft rotatable relative to the shaft. A gear linkage connects the another coupling part with the shaft and transmits portions of a torque of the shaft to the another coupling part in form of an axially directed closing force.

Abstract: A method of forming a perforated cut line using a cutting plotter capable of accurately and rapidly forming a sheet with a perforated cut line along a cut line which is predetermined on a sheet and along which the sheet is to be cut. A cutter pressure at which a cutter is pressed onto the sheet is repeatedly reduced for a micro period of time at predetermined time intervals to form the sheet with a perforated cut line consisting of perforations and unperforated parts defined between the perforations in an intermittent manner.

Abstract: A device for slidably positioning a power tool accessory. The geometry of the device is that of a specially modified channel with the interior opposed surfaces of the two legs of the channel being sloped like a truncated wedge. Sections of the sides of the device are partially separated from the main body so as to permit them to spring outwardly under pressure imparted by wedging members so as to cause the sprung sections to either move towards, or frictionally engage surfaces within guiding slots in a major surface of the power tool (e.g., table saw). The wedging members are controlled by conventional machine screws which permit a continuous range of adjustment.

Abstract: A hydraulically controlled self-contained multi-functional hand tool including a hydraulic ram portion with a rod that activates two blades or arms. The blades articulate about a common pin and are mounted on a fork joint which is securely fixed to the body of the ram. Opening and closing of the blades is achieved by means of a system of links controlled directly by the rod associated with the hydraulic ram. The movement of the blades is obtained by means of an assembly which is integrated into the body of the tool. Said assembly includes an electric motor powered by a battery; drive means for compressing a fluid contained within a leaktight chamber, and a flexible membrane arranged in the chamber to compensate for fluid volume differences and to prevent formation of a vacuum in the chamber when fluid is moved to activate the tool.

Abstract: For the cutting of a web a circular cutter is journaled rotatably in a slide which is moved along the cutting line by means of a linear drive. The cutter has a disk-shaped base body journaled freely rotatable which upon its perimeter is provided with pointed cutting blades angled in the sense of rotation. The distance of the base body from the web is chosen such that only the cutting blades but not the base body penetrate the web. Furthermore, the cutting blades are so fashioned and arranged that upon their penetration of the web to the maximal depth of penetration, an uncut portion remains between two cutting blades which upon exit of the subsequent cutting blades is severed by their leading cutting edge.

Abstract: A surgical stapling instrument for performing a circular anastomosis stapling operation is provided. The surgical instrument includes a stapling head assembly mounted by a flexible support shaft to an actuator handle assembly. The support shaft is capable of bending in any radial direction relative to its centerline into a curved configuration suitable for insertion into a patient. The flexible support shaft includes a dual coil structure which is adapted to support itself in any curved configuration and to resist deflection upon insertion into the patient and actuation of the stapling head assembly. The stapling head assembly includes a driver assembly which is operable in multiple stages to separate the staple forming and tissue cutting actions to reduce the peak force required to operate the instrument.

Abstract: A conveying system for an automatic food slicing machine is disclosed. The conveying system has a floating upper conveyor positioned above a lower conveyor. The conveyors cooperatively feed the food item to be sliced an incremental length into the slicing knives during the feed cycle and retain the remainder of the food item during the cut-off cycle. An indexing mechanism, adjustable to provide different feed length increments and timed to the rotational cycle of the cut-off knife, drives the conveyors. The indexing mechanism only drives the conveyors during the feed cycle and the conveyors remain static during the cut-off cycle. The food item to be sliced is captively held between the upper and lower conveyors during both the feed cycle and the cut-off cycle. Small diameter rollers at the exit end of the conveyors are utilized and are positioned in close proximity to the travel path of the cut-off knife providing retentive capability throughout the feed length range.

Abstract: Punch apparatus develops momentum of a desired magnitude. The momentum is transferred to a punch for driving the punch from a reset position to a punch position.

Abstract: An Electric stapler of the type in which a magazine is unmovably fixed, characterized in that the magazine is secured to a body frame; a driver for driving out a staple is supported by the magazine so that the driver can be rectilinearly reciprocated; a clincher, which receives the staple driven out by the driver, is supported by the frame so that the clincher is located to face the driver and can be reciprocated on the production of the direction of the reciprocation of the driver; the driver is coupled to drive links at one end of each thereof; the links are supported by the frame so that the links are swingable; the clincher is coupled to a clincher lever at one end thereof; the lever is supported by the frame so that the lever is swingable; the links and the lever are associated at the other ends thereof with a drive control cam, which is rotated by an electric motor; and the driver and the clincher are nearly simultaneously moved toward and away from each other in mutually opposite directions through the

Abstract: A process is provided for producing pellets which comprises introducing strands between two upper and lower feed rolls using a belt conveyor slanted downwardly in the direction of travel with a press roll mounted thereon, then introducing the strands to a support having a fixed blade on the head thereof and cutting the strands with a rotary blade while spraying a liquid onto the strands from above the support, to thereby yield pellets having no obliquely cut surfaces and having a uniform cut length.

Abstract: In garden shears the locking device which holds the shear grips in closed position against the force of an opening spring is developed as a slide grip which lies free both on the top and on the bottom of the one hand grip so that this slide can be actuated by the thumb of both the right hand and the left hand without it being necessary also to use the other hand. The slide grip has spring detents which cooperate with indentations in said one hand grip.

Abstract: The invention relates to a twin-flow beater mill for preparing fibrous materials to produce intermediate products capable of further processing. It consists of a rotor fitted with beater plates surrounded by a cylindrical grinding surface. The rotor includes rotor plates which carry the beater plates and which form a guide duct, shaped like an annular disk, which opens out peripherally onto the center of the grinding surface. The beater plates are interrupted on the inlet side in the opening-out region of the guide duct, and on the outlet side replaceable retaining rings can be set on the two end faces of the grinding surface so as to variably adjust the classifying effect.

Abstract: A base carries a tool head having two bore containing members that are relatively rotatable with respect to each other on a common axis of rotation. The bore portions contained in the two members are offset from the common axis of rotation by no more than one bore diameter. The two portions of the bore align in one relative position of rotation, but a handle is connected to at least one member to move at least that member to a position in which the bore portions are partially misaligned, severing any rod placed in the common bore by a combination of offset shearing action and rotary wringing action.