Abstract: An engine unit enclosing an engine, a fuel tank, an oil tank and a chain driving system is mounted on a handle assembly consisting of a front handle, a rear handle and a handle connecting member interconnecting the front and rear handle and supporting the bottom of the engine unit through three vibration isolators made of an elastic material. The rear end of the handle connecting member is joined through a vibration isolator to the rear end of the rear handle, and the front upper end of the rear handle is joined through vibration isolator to the top of the engine unit. The upper end of the front handle is positioned in parallel with the upper end of the rear handle in the horizontal direction and joined thereto through a vibration isolator, and the lower end of the front handle is joined directly to the front end of the handle connecting member.

Abstract: A surgical knife assembly in which a blade is provided with a guard for limiting the depth of cut. The guard is formed of a resilient material such as plastic, and frictionally grips the blade, so that the guard is adjustable on the blade by the application of a predetermined amount of axial force, with the force required for adjustment being considerably greater than the force that is applied thereto during a cutting procedure. An adjustment tool is also provided, the tool and the blade having cooperative engaging portions to permit accurate adjustment of the position of the guard on the blade between incisions during a surgical procedure.

Abstract: Vibration dampening and heat sink mechanism for a reciprocating hand-held saw has a carrier guide with limited axial and radial movement positively controlled by an eccentric. The carrier guide serves both as a counterweight and a heat sink. A drive shaft for an eccentric to provide such limited axial and radial movement also drives a wobble mechanism for reciprocating a saw blade carrier slidably mounted in the carrier guide. The center of gravity of the carrier guide travels in an elliptical path. The relative movement of the carrier guide with respect to the saw blade carrier and their relative weights are such that a substantial or near perfect balance may be obtained when aggressive orbital action of the saw blade and saw blade carrier is used as in the case of cutting wood. The location and mass of the carrier guide effects a heat sink for the heat generated by friction due to relative reciprocating motion of the slidably mounted saw blade carrier.

Abstract: A machine for punching and subsequently binding packets of sheets to book form with wire binding elements comprises a punch and a press connected to, and driven from a common operating member through a mechanical drive, the mechanical drive being so arranged as to move the punch through a shorter distance and at a higher mechanical advantage than the press.

Abstract: A portable, power-operated sabre saw having a power driven saw blade holder which is curved and which is mounted in the sabre saw housing for reciprocation along a curved path that is determined by its curvature to impart to a blade carried thereby a component of cutting stroke travel that is in the direction in which the blade is urged against a workpiece to cut the workpiece. Another feature disclosed herein is a counterweight which dynamically counterbalances the mass of the saw blade holder and the saw blade and which is recessed to receive a power driven gear that supplies the motion for reciprocating the holder and the counterweight. The counterweight is confined between and guided for reciprocating motion by opposed side wall regions of a longitudinally split housing, and a guide pin, which is trapped between the halves of the split housing, extends through a slot in one end of the counterweight to provide a further guide for the counterweight.

Abstract: An electric hand nibbling machine having means for connecting a movable blade member with a rotary driving means transmitting a force from said rotary driving means in the axial direction of said movable blade member while allowing rotation of said movable blade member on its axis and having a sufficient clearance between the fixtures of the movable blade member and a confronting fixed blade member for free and exact operation for an angular material to be cut.This invention relates to an electric hand nibbling machine for shearing sheet iron, synthetic resin sheet or the like by nibbling operation, and more particularly to an electric hand nibbling machine appropriately adapted to cut a so-called keystone-plate or deck-plate used as a material for a ceiling or floor.As shown in FIGS. 5A and 5B, one type of nibbling machine effects shearing of a material in a pushing stroke of its movable blade member b which is adapted to move reciprocatively relative to its fixed blade member f (as shown in FIG.

Abstract: A portable hand-held power device having a slotted entryway for sheet material to be cut; a tool mounted for reciprocation across such entryway and formed with an offset shoulder having a cutting edge movable to and from one side of the entryway, acting as a support for the material to be cut, for impacting a sheet against such side and shearing successive sections of material therefrom as the sheet is advanced through the entryway.

Abstract: A pliers-type tool for locking around a work piece such as a post and slidably mounting a punch which when struck by a hammer will pierce the work piece. The tool is especially adapted for embracing and gripping a highway delineator or sign post to prevent distortion thereof after the post is driven into the ground so that a hole is easily punched in the post adjacent ground level and facing traffic for forming a weakened fracture zone whereby the post will break at ground level without leaving an upstanding segment when impacted by a vehicle and is then fit for reuse by driving the broken end into the ground and then using the tool to punch a hole in the post at the new ground level thereof.

Abstract: Utensils for eating strands of food such as spaghetti. The primary utensil is a spoon-type utensil having means for cutting strands of food. The cutting means is formed by two edges defining a tapering slot in which strands are cut. One edge of the slot is the rim of the bowl of the utensil. The other edge is provided by a diverging portion of a member overlying a portion of the bowl. The slot may also be provided in the bowl from the rim and towards the center of the bowl. A fork utensil can also be provided, specifically adapted for use with the spoon-type utensil.

Abstract: A powered device is disclosed herein for removing soil, weeds or the like from the immediate area beneath a sprinkler head which includes a central shaft having a forward end engageable with the sprinkler head as a guide and a U-shaped member fixed on the shaft so as to rotate therewith. Each leg of the U-shaped member extends downwardly to clear the peripherial edge of the circular sprinkler head. A cutting blade is angularly secured to each end or leg of the U-shaped member so that a forward portion thereof extends underneath the sprinkler head and so that a rearward portion extends outwardly in a diverging relationship to the sprinkler head. Power drive is releasably coupled to the shaft for rotation of the cutting blades about the sprinkler head.

Abstract: A saber or jig saw is provided with a detachable hollow foot plate having a removable hollow transparent shield. The shield and plate collect saw dust and particles (produced during operation of the saw) for subsequent disposal. The plate can be adjusted to permit bevel cuts. The shield permits the user to closely observe the cutting action of the saw when in use and to guide the saw accordingly, thus minimizing the chances of eye injury which could otherwise result if the shield were not used.

Abstract: The apparatus disclosed is for cutting elongated material, such as molding, at any desired angle to its longitudinal axis selected from a group of angles available for forming miter joints and the like. The apparatus includes two members that are connected intermediate their ends in side-by-side relationship for relative pivotal, scissor type, movement around a common axis. Portions of the members on one side of the pivotal axis provide jaws and the portions on the other side provide handles for moving the jaws toward and away from each other. One of the jaws carries a cutting edge. A base plate is mounted on the other jaw for pivotal movement around an axis parallel to the direction of movement of the jaws. A stop plate is attached to the base plate to provide a guide to engage the material to be cut and to position it on the plate.

Abstract: Pairs of planar cutting blades with angularly related cutting edges such as are used in grass shears, and the like, and which are mechanically actuated to move relative to each other and to cut by a scissors-like action are formed in a manner such that during each cutting action the contacting cutting point between each pair of coacting edges moves at a uniform speed. The improved blade construction finds application in shears, particularly cordless, i.e., battery, grass shears, by more nearly equalizing incremental power requirements; by reducing the maximum input power requirements; and by increasing time of performance between battery recharging at a given forward advancement speed of the shear.

Abstract: A portable power saw apparatus is disclosed having an endless saw chain driven about a bow bar by an internal combustion engine. The apparatus includes a pair of transversely spaced legs respectively secured to the chain guide adjacent the outer end thereof and extending downwardly therefrom. The legs provide a ground-engageable abutment to support the outer end portion of the chain guide and saw chain, and they also define a size guage determinative of the largest diameter object acceptable between the legs for severance by the saw chain. Skid means secured to the handle structure of the apparatus is oriented at substantially the same elevation as the legs and forms a ground-engageable means therewith to support the saw apparatus in a generally horizontal orientation in certain operating modes.

Abstract: The knife has a slotted handle and a blade that pivots into and out of the slot of the handle. A free floating pivot pin extends through the slotted end of the handle and through the opening of the tang of the blade, and a slotted ring lock extends about the pivot pin. The ring lock is rotatable on the handle so that its slot is movable into and out of alignment with the slot of the handle, to lock the blade with respect to the handle. The periphery of the tang defines hemispherical indentations, and a spring-urged ball in the handle engages the tang and registers with the indentations so that the blade resists movement when in its folded or extended positions but is free to move when intermediate the end positions.