Abstract: Cutting apparatus is provided for cutting a hole or `window` in the wall of a pipe for example prior to joining a branch pipe to a host pipe. The apparatus comprises a chassis frame 14 carrying a cutter unit 42 supporting a cutter tool 62. The chassis is attached to and movable around the pipe 12 by means of `roller` chains 24. The cutter unit is movable with respect to the chassis frame by means of the associated slider block 38 which is slidable along longitudinally extending chassis frame which is slidable along longitudinally extending chassis frame members 16. Thus, the cutter tool 62 can be moved relative to the workpiece in one sense by movement of the chassis frame 14 and in another sense by movement of the cutter tool relative to the chassis frame. A combination of such movements enable the hole or `window` to be cut.

Abstract: A bandsaw blade comprises a plurality of cutting teeth spaced longitudinally apart by gullets. Each tooth includes a steel portion and a carbide tip brazed to a front face of the steel portion. The deepest point of the gullet lies on a curved section having a relatively large radius of curvature, and is spaced longitudinally forwardly of the trailing carbide tip by a relatively large distance. Transversely spaced corners of the gullet bottom are made smoothly rounded by a shot-peening operation.

Abstract: A shingle cutter apparatus includes a rigid base plate having a first end wall spaced from a second end wall, and a first side wall with a cutter anvil directed along the first side wall coplanar with a top surface of the base plate, with a pivotal cutter blade mounted in cooperation with the anvil. A modification of the invention includes an abutment fence pivotally mounted relative to the base plate for effecting cutting of angular cuts relative to a shingle member.

Abstract: A motorized miter saw includes a base having a turntable mounted thereon for rotation about a vertical axis, a cutting unit having a mounting apparatus for securing the cutting unit on the turntable for movement to non-cutting and cutting positions relative to the turntable, and an indexing apparatus for releasably securing the turntable in predetermined positions of angular adjustment. The saw also includes a detent receiving recess at each predetermined position, a detent alignable by rotation of the turntable with any one of the recesses and a detent biasing member constantly biasing the detent into the specific recess which it is aligned.

Abstract: A hole puncher formed as one piece of plastic molded into base, handle and receptacle portions hinged together by flexible, foldable joints. The one-piece plastic construction can be assembled quickly as a hole puncher by folding the portions into predetermined positions. A feature of the hole puncher is the use of a plastic locking strap connecting the handle and the base, for maintaining the handle folded over the base. Another feature is the use of translucent plastic material, enabling the user to visually check the desired alignment of pins with the paper to be punched, to assure proper location of the punched holes. The design provides an attractive, affordable and easily assembled design without sacrificing strength and durability.

Abstract: A crosscutting device for webs of material, particularly textile webs includes a web feed with a web buffer arranged on a common frame with the cutting station, a cutting station with a rotating disk cutter, driven transport nippers and a tray for stacking the cut material, the rotating disk cutter being automatically moved back and forth across the web by means of a disengageable belt in one of the operating modes and in a second operating mode the disk cutter being movable manually across the web and at the same time also in the running direction of the web.

Abstract: A die press unloader which retrieves material from beneath the lower die of a pair of dies mounted in a die press. The material which is retrieved will have passed through the lower die, and can comprise either scrap, for example in making perforated strip or product, for example in making shaped blanks from a strip. The unloader utilizes a combination of gravity and a mechanical arm, preferably actuated by a double-acting air cylinder, the movements of which are controlled by the press itself.

Abstract: A force-multiplying device includes a base or stationary structure and three levers all pivotally mounted on the base and each having a force input end and a force output end and being arranged in a folded configuration such that each lever extends from the force input and to the force output end thereof in a direction generally opposite to that of adjacent levers in the series. The pivot point of each lever is closer to its force output end than to its force input end so that the force delivered at the output end is greater than that applied at the input end. The base and the output lever may operate as a pair of opposed jaws, each carrying a removable force application device for different applications such as cutting, crimping, punching, lifting and spreading. The input lever and the base structure may be configured as handles of a hand-operated tool and the levers may be arranged to either open or close the jaws in response to movement of the handles together.

Abstract: A lockable knife and block assembly having a knife block having a plurality of slots for housing a plurality of knife blades. Each knife blade is provided with a notch for engaging a spring-loaded locking and latching means located at the top and front of each slot. A spring-loaded biasing means is positioned at the bottom and front of each slot to bias a blade entering a respective slot toward the spring loaded latching means. A push button release mechanism is attached to each locking and latching means for disengaging a knife blade latched thereto.

Abstract: The invention is directed to a dry shaving apparatus comprising a pair of parallel, elongate shaving heads having inner cutters operatively associated with an outer cutter and arranged on a common coupling member which is coupled to a drive member of an electric drive mechanism, wherein at least one of the inner cutters is movably coupled to the coupling member transversely to the oscillating direction of the inner cutters.

Abstract: A unique hernia repair stapler is described which allows the forming of staples to attach prosthetics to tissue, or to approximate herniated tissue. The staple is useful in endoscopic operations and may be rotatable or stationary. The stapler has a unique forming and ejecting mechanism; as well, there is the availability of a loading mechanism useful for both cartridges and magazines of staples. An improved staple shape allows for better staple alignment, especially in a multiple load device.

Abstract: A portable saw mill frame is disclosed which has a frame base of a generally rectangular, elongated configuration. It is comprised of preferably three subsections bolted to each other and easily disconnected. An inverted U-shaped frame is supported by a carriage rolling along side tracks defined by the frame base. It has a cross-beam supporting a transversely slidable holder for a chain saw. The device is substantially sturdier than prior art portable saw mill frames.

Abstract: A drilling system for drilling upwardly under automobiles, and for drilling in a direction away from a drill base in other uses, having a base to which a post is attached. A drill carrier slides on the post. A collar is adjustable to anchoring positions along the post by means of a collar setscrew. A hand-lever pivoted to the drill carrier at one end has a mid-lever-fulcrum-axis at a pivotal attachment to the collar whereby a drill on the carrier moves away from the base when the post is vertical beneath an automobile and the other end of the lever is pulled downwardly in the direction of gravity-pull.

Abstract: A butter knife having a knife blade (10) and a handle (16) is configured at the junction between blade and handle with a transverse channel (26) whose side walls (20, 22) are substantially parallel and disposed perpendicularly to the blade. The rear wall (22) has a vertical extension which is approximately twice the vertical extension of the front wall (20), so as to form a stop when the knife blade is moved slidingly inwards on the rim (34) of a plastic tray (22) having a folded edge. The width of the chann el is such as to enable the channel to be pressed over the tray rim so as to clamp the knife firmly in a substantially horizontal position when the tray is placed on a table.

Abstract: A punching tool for piercing a hole through the substantially parallel, spaced apart plates of a data storage disk casing uses a die which supports one of the plates and an elongated punch which pierces through the plates in succession. The disk is placed on a tray on the punch's base, and a drive lever is pushed downward to drive the punch through the casing plates. The punch is guided so that it moves along its axis of elongation and has a cutting surface at its end with a point to begin the hole in each of the plates and a trailing edge spaced apart from the point which completes the hole. The distance between the point and the trailing edge is great enough to allow the point to begin a hole in a succeeding plate before the trailing edge completes the hole in the previous plate.

Abstract: A cut-off machine for cutting off predetermined lengths from a moving length of roll form material such as tubing adapted to be positioned downstream from a source comprising a plurality of cut-off assemblies which are reciprocated longitudinally of the moving length of material and operated during the movement to sever plural predetermined lengths. The reciprocating and cutting movements are derived from a differential beam pivot assembly wherein one end of the beam is driven in a linear reciprocating path by a crank and the other end of the beam is connected to reciprocate the cut-off assemblies such that they are driven at a speed corresponding to the speed of the tube at the time the lengths of tubing are cut off. The apparatus can be adjusted to cut tubes of different lengths by moving the pivot point of the differential beam. The apparatus includes a mechanism for selectively disabling the operation of the cut-off assemblies and actuating them to permit greater lengths of tubes to be cut-off.

Abstract: A garden shears is provided with replaceable knives mounted on elongated grips which are connected at a pivot joint that is constructed of a steel bushing that takes up radial loads (shear and flexure). Axial loads are taken up by a screw bushing which passes through the steel bushing and a joint screw threadably engaged with the screw bushing. Both the joint screw and the screw bushing have widened shallow heads with slightly convex surfaces that pass into surfaces of the shears. The replaceable knives are supported at the rear by extensions of the respective grips in a manner such that the knives are not required to take up bending moments.

Abstract: A tube cutting tool is described in which a cutting head is rotatably mounted within a tool body wherein both define "O" shaped openings to enable tubing to be inserted perpendicularly through the tool. A cutting wheel is incorporated into the cutting head such that rotation of the cutting head causes the wheel to pass around the periphery of the tube. A feed cam and lever device are incorporated which mechanically bias the cutting wheel into contact with the tube wall until the tube wall has been completely severed. A gear drive assembly transports power from a power source to the cutting head to rotate it about the tube. Stabilizing devices are utilized to help secure and align the tubing into the cutting tool during operation.

Abstract: A rescue tool as incorporated into a portable unit both the tool operating mechanism and the hydraulic power means necessary to provide a self-contained tool. An elongated tool body comprises the rescue tool mechanism and its associated hydraulic actuator unit, an air/oil intensifier pump for driving the hydraulic actuator unit, the control valves for the pump, and an air valve for actuating the hydraulic control valves to their control positions, whereby the only hose connection to the portable unit is a single air hose for supplying high pressure air.

Abstract: A magazine for V-nails for use in underpinning of picture frames receives a strip of V-nails secured together by heat-bonded non-adhesive synthetic plastic material through an opening of greater width than the V-nails. A pusher has a downwardly projecting tongue which is driven in the machine and has depending side walls at its forward end affording a contact point for pushing the V-nails at their center of gravity towards a pair of locating formations and the extreme forward end. A single V-nail which may be presented either point foremost or point rearmost is removed from the end of the strip in the underpinning operation, the magazine being cut away and the pusher being cut away to permit this operation. On return of the drive member, a cam firstly returns the pusher to a stop in the magazine and then lifts the magazine from its operative position to enable it to be removed or refilled.