Abstract: An adjustment tool for use with a surgical knife of the type in which a blade is provided with an adjustable guard for limiting the depth of cut. The tool has cooperating portions for engagement with the blade and the guard to permit it rapid and accurate adjustment of the position of the guard on the blade between incisions during a surgical procedure.

Abstract: An improved article of cutlery which in one form of the invention serves either as a spoon or a knife, and which in another form of the invention serves either as a spoon or a fork; in each form of the invention the spoon having a hollow flange or lip along one side and from which either a knife blade or fork teeth are outwardly extendable by means of a flexible push rod that extends into the spoon handle where it is manually controllable by a person's finger so that either implement is selectively used during a meal.

Abstract: Rotary motion is converted to linear motion by multiple thread sets which cooperate to provide precise control of the amount of rotary motion thus converted. As applied to a precision positioning device for a tool, blade or other object, the thread sets are preferably arranged in a serial and/or telescoped configuration. A relatively simple precision hand tool positioning device is realized by having one thread set arranged in a common direction but reduced pitch relative to the other set. The finiteness of the object positioning is further enhanced by moving it with respect to an inclined plane. A retaining device for gripping the element to be moved is directly associated with a shank having the smaller pitched thread set thereon. The shank is prevented from rotating but allowed to move linearly relative to a housing and the threads thereof engage a spindle which has another set of threads for engaging the housing. A calibrated indicator of the shank position in easily readable format is provided.

Abstract: An articulated cutting tool, such as scissors, is formed by casting a first element with a pivot region, and casting a second element using the pivot region of the first element as the mold for the pivot region of the second element. The pivot regions of the elements are tapered, and in order to free the pivot joint, the pin is upset, for example by punching in the axial direction of the pin. The articulated element thus formed is coated with a hard coating material, and the cutting edges of the tool are ground to provide a sharp cutting edge for shearing action to which the layer of hard coating material extends. The invention is also adaptable to articulated tools, such as pliers, which do not have cutting edges, in which case the plating and grinding of the tool may be omitted.

Abstract: A wooden cooking tool is taught wherein a shank of substantial strength connects a contoured spoon-bowl at one end and a contoured fanned spatula at the other. The spoon-bowl blends symmetrically into the shank portion and is contoured so that its outermost end projects ventrally relative to the axis of the tool. The spoon-bowl serves the function of not only a spoon-bowl per se, but also that of a handle member when the tool is turned upside down for use as a spatula. The size, shape and thickness of the spoon-bowl permit one to grip it with the fingers of one's hand inside the convex portion and the palm on the concave outer portion. The spatula is a contoured fanned structure which terminates in an angularly disposed substantially straight edge. The slope or angularity of this edge is such that the lateral extremity of it lying most outwardly from the shank is at the right of the axis of the tool as the tool is gripped at the spoon-bowl for spatula use and the spatula pointed upwardly.

Abstract: A blade scraper has a hand grip casing with a blade storage compartment and a slide mounted in a chamber of the casing for holding a razor blade and permitting retraction of the razor blade into an inoperative position and sliding movement to an operative position with the blade in a scraping position exposed outside of the chamber. A pressure sensitive locking button acts to lock the blade in the inoperative position or the exposed position. A safety button is interconnected with the slide so that pressure must be applied to two actuating buttons in order to expose the blade thus making it difficult for small children to accidentally place the scraper in a mode of operation dangerous for handling. The slide carries a safety dowel for locking the blade compartment when the blade is locked in its inoperative position.

Abstract: This invention relates to an apparatus for cutting away rivets of tensioned reinforcements which are protruding beyond the surface of a tension plate used for tensioning the reinforcements in order to increase the strength of a concrete product, characterized in that a chisel, for cutting rivets formed at the end of the tensioned reinforcements, is provided in such a manner that it can slide along the normal line of the tension plate and in contact with the surface of the tension plate, the chisel being interlocked with a fluid-pressure sliding mechanism, and further an immovable part of the mechanism is engaged with a part of the tension plate so that the counter force against the cutting by the chisel is obtained from the tension plate.

Abstract: A lemon hand peeler consisting of a generally horseshoe-shaped frame provided with an inwardly arcuate spaced apart cutter blade whose ends are rigidly supported by the frame. The frame is adapted to be held in one hand so as to enable the user to remove the peel from a lemon, or other citrus fruit, by engaging the cutting edge of the blade into the rind of the lemon and rotating manually the lemon for the purpose of separating the rind from the meat.

Abstract: This invention teaches a convertible portable electric tool having a common power housing and different operating tool output pieces which can be releasably secured to said power housing without the need of any tools. Each of the tool output pieces has a stationary element and a movable element supported by the stationary element. The power housing has an exposed drive element which can cooperate with and drive the movable element when the statonary element is properly positioned relative to the housing. The stationary element in turn is sized to cooperate with the housing to cover the exposed drive element and be accurately positioned and held in place against the housing. Flexible fingers cantilevered integrally from the housing have free end flexture parallel to the stationary element, and further have projections on the finger ends that interlock with the positioned stationary element to hold it operatively in place relative to the housing.

Abstract: An electrically powered grass trimmer with novel provision on the housing for maintaining the motor and housing halves in assembled condition.

Abstract: A plurality of tubular, spaced apart cutting links are coaxially fastened to a continuous cable and are driven around a plurality of sprockets by a motor driven sprocket. Each cutting link includes cutting teeth at the forward end of the link and a chip or sawdust clearing edge at the rear of the link.

Abstract: A combination of a knife and scabbard is disclosed, the knife having a lateral projection on its handle and the scabbard having a stop on the inner surface of one side edge thereof for engaging the projection when the knife is inserted into the scabbard, preventing accidental release of the knife. A slot opening in the upper part of the scabbard opposite the stop can be widened by forcing the knife handle into it to disengage the projection from the stop, permitting the knife to be withdrawn from the scabbard. A strap and fastener releasably prevent widening of the slot opening to lock the knife in the scabbard.

Abstract: A battery powered grass shear having improved upper and lower shear blades with improved cutting and durability characteristics and which require less power to operate. The lower shear blade, which is fixed to the housing of the battery powered grass shear, is provided with a forwardly and upwardly extending forward portion provided with transversely spaced apart cutting teeth. The upper shear blade, which is reciprocated relative to the lower shear blade, is formed of a comparatively thin, heat treatable, resilient steel and is normally flat when in a non-stressed state. The upper blade, when assembled to the lower blade is bowed upwardly and the cutting edges of the spaced apart teeth on the upper blade intersect the cutting edges of the spaced apart teeth on the lower blade and make point to point contact throughout the length of the blade as the blades are reciprocated. The cutting surfaces are preferably heat treated to an equal hardness.

Abstract: A guide bar has a main portion and a nose portion. The main portion has a convex outer end and the nose portion a mating concave inner end. A tongue extends from the nose portion for insertion in a receiving slot in the main portion and rivets fasten the tongue to the main portion. A relief is formed at the junctions of the edges of the nose portion and main portion, i.e., at the points where the saw chain passes from the main portion to the nose portion and then back to the main portion of the guide bar.

Abstract: Disclosed herein is a saw chain including a center link having a trailing portion pivotally connected between the leading portions of an opposed pair of side links, one of which is a cutting link having a cutting tooth and a depth gauge. The center link includes an upwardly projecting tang which is located in laterally adjacent relation with the depth gauge and extends in the direction of the cutting tooth beyond a plane extending vertically from the axis of the pivotal connection between the trailing portion of the center link and the leading portions of the side links. During travel around the nose portion of the cutter bar, an outer corner of the tang projects outwardly beyond the uppermost edge of the depth gauge, i.e. overrides the depth gauge, and rides in the bottom of the saw kerf to limit the depth of cut made by the cutting tooth.

Abstract: A cutting implement, such as a pair of secateurs, either of the anvil type or of the cross over type, in which two handles are pivotable relative to one another, the first of the handles including a removable blade having a pair of substantially parallel fingers which pass within one of the handles on either side of the pivot, and a detent is provided on one of the fingers and said other handle, a leaf spring, which normally urges the handles to an open position, holding the detent in engagement. In the anvil construction, the anvil is formed in one piece with the other handle, by bending two portions of the other handle in opposite directions, so that they both lie in a plane substantially perpendicular to the blade.

Abstract: A chain saw guide bar is formed of two metal plates of uniform thickness and of like size and shape. Each of the plates has local areas displaced from the plane of the plate to form protuberances on the inner face of the plate and corresponding recesses in the outer face. The protuberances are spaced from one another both laterally and longitudinally of the plate and comprise rows of protuberances which are spaced inwardly from opposite side edges of the plates a distance slightly greater than the length of the tangs of a saw chain to be used on the guide bar. The two plates are superposed on one another with the protuberances of one plate engaging matching protuberances of the other plate. One of the protuberances of each pair of matching protuberances has an integral tubular projection extending through a hole in the matching protuberance and riveted over in the corresponding recess to unite the plates in a unitary structure.

Abstract: A bolt cutter has a pair of plates between which pass a pair of front axle pins on which are pivoted a pair of blades and a pair of rear axle pins fixed relative to the front pins and in turn pivotally carrying a pair of handles. The rear end section of each blade is formed with a part-cylindrical seat receiving the cylindrical head on one end of a rigid link having on its opposite end another such cylindrical head received in another part-cylindrical seat formed in the front end section of the respective handle. The parts of the blades and handles as well as the links between the support plates are all of like thickness and snugly held between these plates. A pair of inwardly open part-cylindrical seats formed in the blades between the front pins receive a pin serving to ensure symmetrical movement of the two blades whose cutting portions are spaced apart even when the blades are closed.

Abstract: A chopper assembly of the type normally mounted on a spray gun to chop and spray fiberglass or the like, and which includes a backup roll driven by an air motor and a cutter roll. The exhaust of the air motor is expelled through air jets in the cutter roll to help drive the cutter roll while also muffling the sound of the exhausting air. The chopper frame is mounted on the gun by a hollow universal joint of the ball and socket type, which carries air to the chopper at any chopper orientation without the need for external flexible hoses or the like.

Abstract: A portable hand-held shear for cutting grass and the like comprising a housing enclosing an electric motor and forming a handle. The motor includes an output rotary shaft which, through a gear train, drives a rotary blade. A stationary bed knife assembly connected to the housing cooperates with the rotary blade in scissor-like fashion to cut grass.An improved cutting assembly is described in which the rotary cutting blade member, of particular design and positioned in a floating relationship above the stationary bed knife assembly, is inclined into engagement with the cutting teeth projecting from the stationary bed knife assembly, also of particular design, in such a manner to improve the performance of the shear. The improved cutting assembly further includes a rotary hub drive member which cooperates with the shear housing and the bed knife to eliminate clogging and partially overlaps the bed knife assembly's cutting teeth to further improve the performance of the shear.