Abstract: An apparatus including elongate handle formed with a hollow cavity directed interiorly of the lower end of the handle wherein the hollow cavity includes an internally threaded lower end cooperative with a threaded shaft of a plug member to selectively contain replacement blades within the cavity. The cutting head includes a reciprocatable cleaning plate mounted orthogonally relative to the elongate cutting edges of the spaced cutting blades slidably mounted within the head. Each of the blades includes an elongate cutting edge defined by alternating edge thicknesses to maintain structural integrity of the cutting edge while permitting an efficient and effective shaving operation.

Abstract: A wrap-around cover for a bound book which includes a rectangular sheet having a center portion that abuts the book spine, with the side portions of the sheet being folded inwardly to overlie the front and rear covers of a book to be protected, and with the distal portions of the rectangular sheet being formed with inwardly-facing flaps. These flaps receive the outer portions of the front and rear covers of the book to removably retain the wrap-around cover on the book, and with the wrap-around cover being formed of a flexible synthetic plastic material so printing on the front and rear book covers is visible.

Abstract: A relatively thick-bodied doctor blade made of a low friction plastic material includes a seal relief bevel of between approximately 5 and 10 degrees. The blade then tapers to a tip support shape and tip of between approximately 0.001 and 0.005 inch. When used in conjunction with a chamber type inking system, the doctor blade cooperates with the chamber end seals to form a more positive and controlled seal therebetween.

Abstract: A manually held tool for cutting a polymeric endless power transmission belt body having alternating ribs and grooves; the tool comprising a pair of holding members for holding knife blades, and a handle around the holding members. The holding members are angled to fit within the grooves, and taper from the body to the tip, each end of the members have a different tip thickness and either end may hold a knife blade to fit belt body grooves of different thicknesses and permit cutting through selected grooves to form a plurality of endless belts having at least one rib. The tool is particularly adapted to cut belt bodies in an environment lacking in special machinery so that an operator can hold the body manually while performing the cutting operation.

Abstract: A manual tool useful for cutting, scraping, deburring, marking and the like hand operations, is formed of an elongated handle shaped to fit within the human hand. The handle has a forward end formed with a socket for receiving a conventional, wafer-like, machine tool hard cutter insert. The insert fits within a socket which exposes a forward end of the insert and portions of the insert side edges for contact with a work piece. The insert may be fastened within the socket within the handle by means of a suitable, conventional screw fastener or the like. The insert may be pre-selected from a conventional insert having a conventional circular, square, diamond-shaped, hexagonal shape, triangular and the like peripheral edge and the socket is formed so that similar size, but different peripheral edge shaped inserts may be replaced, one for another, as desired. Thus, new or used conventional machine tool cutter inserts may be utilized in the tool at the user's option.

Abstract: A guide bar for chain saw comprises a main body of a plate shape. The main body has first and second sides facing each other in the thickness direction of the main body. The main body includes at least a first recess provided on the first side, and a second recess provided on the second side of the main body. The first recess has a first portion communicated with the second recess so that the recesses define in combination a through hole at the communciating portion, and a second portion shielded by the second side of the main body. A filler is packed in said first and second recesses.

Abstract: A utility knife comprises a lower elongate part shell 1 and an upper such part shell 3 forwardly fitted with interengaging wedging surfaces whereby they clamp together on relative longitudinal movement. This movement is achieved by turning nut 2 on shank 8 to bear on wall 30. The loosening of the nut 2 to unclamp the part shells and thus permit blade 43 to be pushed forward with slider 42 by pushbutton 41 does not separate the part shells 1 and 3 since the end spur 9 of the shank 8 still rides on arresting web 37. Maximum unscrewing of the nut, however, permits separation e.g. for access to stack of spare blades 60 resiliently held at 59 in the rearward part of shell 1 (now unencumbered by the conventional screw-shank), but does not lead to loss of nut 2 because of a complementary detent configuration 25 at the end of the shank and in the end wall 2a of the nut prevents complete nut/shank separation.

Abstract: The reciprocating saw incorporates a counterbalanced reciprocating drive having a jackshaft on which primary and secondary wobble plates are mounted. The wobble plates drive reciprocating saw spindle and a concentric counterweight in opposite directions to cancel out the induced vibrations. The spindle reciprocates in a bearing sleeve having a slot through which the primary wobble arm projects to drive the spindle. The counterweight slides on the outside of the sleeve and has a slot which slides over the primary arm. The secondary arm drives the counterweight. The arms are out of alignment to permit their strokes to overlap without collision. The wobble plates are angled out of 180.degree. so the spindle and counterbalance reverse at the same time. The cutting stroke and speed are increased and vibration is insignificant. The drive has many other uses.

Abstract: An ergonomic hand tool of this invention comprises an elongated support bar adapted to be positioned adjacent the forearm and wrist of the wearer. The support bar has forward and rearward ends with the forward end being adjacent the wrist of the wearer. Attachment means are on the support bar for securing it to the forearm and wrist of the wearer. A hand gripping member is pivotally secured to the forward end of the support bar. A locking mechanism is operatively connected to the hand gripping member to selectively lock the hand gripping member in a predetermined position with respect to the support bar. A tool member, such as an elongated knife, is secured to the hand gripping member. The hand gripping member has a plurality of finger gripping portions thereon. The locking means includes a spring coil operatively connected to a thumb actuated lever on the hand gripping member.

Abstract: A cable stripping tool comprises a coring blade having dual coring edges on its leading end and a respective helical groove for each edge for leading cored plastic material away from the end of a cable as the cable is being stripped of plastic dielectric material to expose the center conductor, and an angled chamfering cutter for chamfering and cutting back the metal sheath which surrounds the dielectric material, the helical groove means of the blade extending to the rearward end of the blade to open into a relief space in the inner end portion of the tool holder.

Abstract: A hand-held can opener is provided with a grip handle, a grip block pivotally mounted to the forward end of the grip handle, a scissor handle pivotally mounted to the grip block and having a one way roller clutch connection with a unidirectionally driven feed wheel. The grip block is provided with a latch. Squeezing of the scissor handle toward the grip handle with pivot the grip block to position the feed wheel relative to the cutter for penetration of the can lid and lock the grip block into this position. Subsequent release and squeezing of the scissor handle will drive the feed wheel undirectionally for advancing the can lid past the cutter.

Abstract: An assembly and method for cutting through a cast of the type having flexible wrapping and a rigid outer shell. The assembly comprises a side plate having edges defining an elongate notch for receiving the cast, a cutting blade rotatably mounted on the side plate adjacent the notch, and means for rotating the cutting blade relative to the side plate. The edges of the side plate defining the notch include at least one cutting portion. The cutting blade is maintained in sliding scissors-like engagement with the cutting portion of the side plate to shear the cast between the cutting portion and the cutting blade as the blade is rotated.

Abstract: A cutting device for a plastic pipe or the like includes a gun-like body having a forward fixed jaw member and a rear movable member carrying a cutting element preferably of a triangular shape and having two converging cutting edges. The movable member can be moved forward by operating a handle. In operation, the cutting element penetrates the object and then cut the object efficiently.

Abstract: A blade for use in a safety razor is manufactured by providing a block of green or uncured ceramic material. The block is in the form of a honeycomb structure having a plurality of substantially parallel cells formed therein and a portion is sliced and removed from the block forming at least one surface on the portion intersecting the parallel cells at an angle. The portion is cured, and the surface ground and polished to provide a plurality of cutting edges.

Abstract: A disposable safety razor system having a shaving head, a control head assembly and an integral pressurized foam canister. The control head assembly has an activator, which when depressed, allows foam shaving cream to be dispensed through a tube in the control head assembly to the user. A removable locking tab is provided which prevents the inadvertent dispensing of the foam until the user is ready to receive the foam.

Abstract: An improved razor head for attachment to a razor handle comprising a pair of inwardly directed fingers for engagement with a pivotable razor cartridge is provided with a single button for attachment of the razor head to the cartridge. The button is positioned for ease of operation by the thumb when the razor handle is grasped by the user and pressure on the button is effective to move the fingers linearly outwardly along a line parallel to the cartridge width dimension, or razor edge. The fingers are locked in the outward, or open, position after release of the pressure on the button and are returned to the inward or engaging position through contact of the cartridge with a cam follower on the razor head.

Abstract: The present invention is directed to a rotary type electric razor which includes an arch-shaped external cutting edge detachably mounted on an upper side of a main body case, an internal cutting edge driving unit supported for free vertical movement with respect to the main body case, and a motor speed detecting means provided within the main body case. The internal cutting edge driving unit comprises a rotary internal cutting edge which rotates in sliding contact with respect to the internal face of the external cutting edge, an internal cutting edge driving chassis for rotatably supporting the rotary internal cutting edge, a motor mounted on the internal cutting edge driving chassis, and a drive transmitting means for transmitting the output of the motor to the rotary internal cutting edge. The motor speed detecting means comprises a rotary member mounted to the output shaft of the motor, and a photosensor opposite the rotary member.

Abstract: The scissors for household and medical use comprise an upper and lower blade defining a distal region and an upper and lower handle defining a proximal region. The lower blade and handle are formed as one piece and the upper blade and handle are formed as two separate pieces. The upper blade is movably linked to the lower blade by means of a mechanism--e.g. a four-bar linkage--allowing to move said upper blade by acting on said upper handle leaving said one-piece lower blade and handle stationary.

Abstract: A utility knife includes a mechanism for detaching the individual blade segments along segmentation lines from a segmented knife blade. The detachment mechanism includes a plunger located at the forward end of the utility knife. An adjustment mechanism advances the knife blade for alignment between the plunger and a retention chamber. Actuation of the plunger exerts a transverse force on the blade segment, detaching same from the remainder of the blade. The retention chamber prevents the detached blade segment from flying from the utility knife where it could cause injury or damage. Optionally, the utility knife may include a spare blade storage compartment and/or a guidance mechanism to facilitate the cutting of straight or curved lines in particular situations.

Abstract: A kitchen tool for handling disposable food containing bags in described. The took includes first and second pivotally-connected members which have bag-gripping edges between which a bag is gripped. At least one such edge and as described both bag-gripping edges have slots through which a knife can move to cut a bag as it is held. A bag cutter is mounted on one member to cut a bag along the slots. A lock mechanism is described with which the members cannot be opened unless the cutter is moved to a safe position.