Abstract: The invention provides a portable power tool which is lightweight and convenient to use by the general public in any of its various forms, as a wallpaper stripper, a paint scraper or a cold chisel up to a power spade. The tool comprises a housing (12), a drive means, conveniently an electric motor (14,160) adapted to drive a selected tool bit (4,56,62,64,66,68), the output shaft (44) moving in a reciprocating axial movement. Conveniently the drive means may be a linear motor (160) or if used with a cam device, a rotary motor (14). The cam device may be a cylinder cam (32) provided with a sinusoidal cam track (34).

Abstract: An erasable label is provided on a tape cassette, computer disc, reel, or the like. The label comprises polyester film (e.g. colored Mylar film) having first and second faces. Indicia, such as straight lines, a grid and words, are screen printed (or otherwise applied) onto the first face of the film, and adhesive is applied to the second face of the film. A release paper may cover the adhesive, and when it is removed the film may be adhesively secured to an outer surface of a tape cassette, computer disc, or the like. One may write on the label with a suitable felt pen, and when the cassette or disc is to be erased and reused merely wipe off the written indicia with a cloth. The screen printed indicia stays permanently affixed to the polyester film.

Abstract: There is disclosed a tracing light for a saber saw in which the light source is located on the shoe of the saber saw, immediately adjacent the cut line marked on the work piece. In one embodiment, the light source is the terminal end of a fiber optic transmission tube which communicates with a light source mounted at another location on the saber saw. In an alternative embodiment, the light source is within a housing that is secured or supported directly on the shoe of the saber saw, with the light emitting element, either an incandescent bulb or a light emitting diode, located immediately adjacent the cut line of the work piece.

Abstract: A device for cutting the stems of plants, such as flowers and the like, at an angle so that the stems can be easily forced into a support base such as foam plastic material. The device has an outwardly opening blade holder affixed to a ring member. A mount means supports the cutting blade within the blade holder. A cutting edge on the blade is spaced inwardly of the terminal ends of said legs where it is unlikely to inadvertently be engaged and cut the thumb. A spur is attached to the ring at a location spaced from the blade holder. The spur extends from the ring and is adapted to be received against the ring finger when the ring is received about the forefinger. The device is attached to the forefinger of one hand and can be manipulated to cut plant stems at an angle. The mount means includes a blade receiving slot that is formed within each of the legs, and the blade is positioned within the slot with the cutting edge thereof extending from one to the other leg.

Abstract: This invention relates to utility knives used to cut various items, including cartons, cardboard, string and wallpaper. Specifically, the invention provides a disposable one-piece razor blade utility knife in which the blade is adjustable yet permanently affixed to the knife handle. When the complementary shells of the handle are open, the blade may be placed in a usable position in which the cutting edge will protrude out of the handle when the shells of the knife are later closed or in a safety position in which the blade will be fully retained in the handle when the knife is closed.

Abstract: Apparatus mounting to the flat of the top blade of a scissors or like cutting device, intermediate its ends, and forming an assembly thereof in use, comprises a holder having a generally oblong substantially block-like configuration one surface portion of which provides its bottom and correspondingly its base as it seats to the aforementioned flat and projects therefrom in a perpendicularly projected relation thereto. This base is provided with means causing it to adhere to said flat. A second surface portion of this holder is distinguished by an inwardly directed slit which accommodates and defines a grip portion of the holder which receives, accommodates and retains a portion of a slide gage rule or its equivalent to establish the rule in a perpendicularly projected relation to that flat to which the holder seats.

Abstract: A guide bar for a chain saw, the bar having oppositely located flat sides. A plurality of recesses are formed in each of the sides, the recesses on one side being offset from the recesses on the other side. At least some of the recesses are filled with a lightweight material. Some of the recesses may also function as oil reservoirs and oil passages between the guide grooves of the bar.

Abstract: A hand-held scroll saw having a blade includes a body having a handle provided at the upper portion of the body, a foot plate provided at the lower portion of the body so as to be slid on a workpiece which is to be cut by the saw, a piston provided over the front portion of the plate so as to be moved upwardly and downwardly, and a motor provided between the handle and the plate so as to move the piston up and down. A hung member is removably secured to the sawing blade at the upper end thereof, and a hanger is secured to the piston at the lower end thereof and engaged with the hung member. A U-shaped arm having an upper portion secured to the body and a lower portion located near the lower end of the blade so that the arm does not interfere with the workpiece. A pulled-down member is removably secured to the blade at the lower end thereof, and a pulling-down member is engaged with the pulled-down member.

Abstract: A chain guiding rail for use in power chain saws has a tip part defining an arcuate run-in section extending from an end point of a forward-run section to the vertex of the tip part, and a run-out section extending from the vertex point to a start point of a return-run section. The run-out section has a substantially larger diameter and a tangential line at its center point forms an angle (b8) of 40.degree. to 70.degree. with a center axis of the rail. To eliminate kickbacks during operation of the chain saw the vertex is situated in a sector of the tip part which is delimited by reference line coinciding with the center axis or extending in parallel thereto, a perpendicular line relative to the forward-run section at the end point (E) and to the parallel reference line or the center axis, and an arc whose center of curvature coincides with the point of intersection of the parallel reference line with the perpendicular line.

Abstract: In tools for clipping material of different hardness and dimensions, there are required blade-portions (1, 2) having different characterics. A pliers jaw, the blade-portion of which is formed with different edge angles (a.alpha..sub.1, .alpha..sub.2), different edge radii and different widths (b, B) on its outer chamfer surface (5) results in a tool which is usable for different materials. By configuring different cutting areas (6, 7) by distinctly machining the jaw, the right cutting area can easily be localized for the material in question that is to be cut.

Abstract: A dry-shaving apparatus having a drivable shaving member is provided with a separately drivable vibration device for cleaning purposes.

Abstract: A utility knife having a main body formed from a pair of body halves which are assembled together. The main body has an opening at the front with means to prevent the pair of body halves from spreading apart and with means to prevent the blade from swaying from side to side. In addition, means are provided to hold the body halves together without the necessity of using special tools or fastening means.

Abstract: A cutting tool is provided for removing the exposed pintail of a set fastener, such as blind fastener of the type commonly used in the aerospace industry. The tool comprises an air motor for rapidly rotating a relatively thin cutting disk made from a highly abrasive material. The tool is provided with an adjustment mechanism to control the distance of the cutting disk with respect to the surface in which the fastener is set. In operation, the cutting disk rapidly cuts through and removes the pintail so that it is substantially flush with the surrounding surface. A vacuum system also is provided inside the tool for collecting the severed pintails and related debris that results from the pintail cutting process.

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 chain saw body having an upper and lower housing. The prime mover is lowered into the upper housing and held in place in shaped recesses for it. The upper housing is itself lowered onto the lower housing, which mounts the handles and defines a fuel tank. The upper and lower housings are connected via vibration dampening couplings.

Abstract: A twin-pivot-head razor with a head that has an outer body that is provided with a window to receive a separate subassembly in which is integrated the holding mechanism for the razor blade unit. Starting from a spring-loaded neutral position, the razor blade unit, via this holding mechanism, can carry out pivoting movements about an axis that is parallel to the cutting edge of the razor blade. The separate subassembly is also pivotable within the outer body about an axis that is perpendicular to the aforementioned pivot axis, whereby the neutral position is formed by a spring arrangement within the outer body.

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 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.