Abstract: A tool for use when fitting window frames and door frames and like structures into wall-openings intended therefor. The tool includes two parts, of which one is angular in shape and has a first leg (2) arranged to be secured temporarily to the inside of the wall adjacent to the opening. The second tool part has the form of an elongate, flexible but non-stretchable element (7) arranged to be permanently secured at one end to the surface of the frame facing the defining surface of the opening. The other end of the elongate element (7) and the second leg (3) of the angular tool part are arranged to be temporarily locked to one another in an adjustable fashion.

Abstract: A belt grinder has a pressure roll which is designed as a deflection controlled roll with a hollow cylinder which is supported on a rotation-proof crosshead, and is braced from the inside against the crosshead, particularly hydraulically, with a space between its inside circumference and the crosshead.

Abstract: A tool for engaging a damaged or mutilated hexagonal socket in a threaded fastener, or the like, so that sufficient torque may be applied to the fastener to effect unthreading and removal thereof from a part with which the fastener is engaged. One end portion of the tool is tapered and hexagonal in cross section, thereby providing three pairs of opposite sides. Each side is tapered inwardly by a predetermined angle which permits the sides of the end portion to wedge against respective walls of the socket when forcefully driven therein. The opposite ones of each pair of sides of the end portion are spaced by a gauge width which, together with the taper of the sides, coact to prevent the end portion of the tool from bottoming in the socket when the tool is fully engaged in the socket.

Abstract: A bow saw having a frame and a saw blade which is tightened between the opposite ends of the frame when used. The frame is composed of three individual elements which are interconnected by means of simple and cheap connections and which are firmly held together as long as a tensile stress is maintained in the blade by means of screw members. These elements are collapsible in order to reduce the size of the saw. To this end a main element has a cavity for housing the blade, while two end elements have cavities allowing the main element to be partially introduced therein.

Abstract: A tool for insertion into a pipe in order to apply torque by contact with the inside surface of the pipe. It has an axially located socket in a central rotor with a concentric ring around the rotor. The ring has a plurality of toothed gripping arms pivoted on the ring and connected to the rotor by links pivoted at both ends so that relative rotation of the rotor extends the gripping arms for contacting the inside of the pipe by the teeth.

Abstract: A plane comprising a body between the side walls (1,2) of which two soles (3,4) are fixed, the lower faces (14,15) of these soles being located in a common plane. A V-shaped opening is provided between the soles (3,4). A blade-holder mounted on a shaft (20) comprises a lower blade (16), a removable cutting blade (18) and a counter-blade (27) which is linearly displaceable relative to the lower blade (16). An arresting device (13) articulated on the side walls (1,2) maintains, in service position, the blade-holder against a bearing face (12) of the sole (4).

Abstract: A spindle tilting control device for a plane and spherical rotary grinding machine, fine grinding machine, lapping machine and polishing machine, which are super precise machines for manufacturing microminiature electronic part components, which device employs a joint (7) for tilting a spindle, can perpendicularly secure a rotary table (1) with respect to the spindle (3) by clamping crank bolts (4), (5), tilts a grindstone or surface plate (2) with a spindle tilting joint (7), thereby machining spherical surface together with electric and chemical methods. This machine can extremely precisely machine semiconductor material, magnetic material, ceramics, superhard alloys, or the like.

Abstract: To reduce operating noise, and particularly the impact of sound pressure waves on the internal structure of the planing machine, the edges defining separating walls against which sound waves may impinge are inclined with respect to the axis of rotation of the cutter (16) or a theoretical line (46) parallel thereto, thereby extending the time of impact of individual pressure waves emanating from the cutter of incremental surface areas of the respective edges (26, 48, 50; 42, 52, 54; 30) to simultaneously attenuate the impact of the pressure waves and the timing of the impact.

Abstract: The present invention relates to a woodwork cutting device such as wood chisel or plane iron blade having a cutting end, one side with a beveled cutting edge formed about the cutting end thereof, and opposite back side, and two side edges. Provided about the back side of the woodwork cutting device is a plurality of transversely extending and longitudinally spaced grinding guides that extend generally parallel with respect to the beveled cutting edge. This allows an individual sharpening the woodwork cutting device of the present invention to maintain the cutting edge perpendicular to the longitudinal axis of the blade. In addition, about at least one side edge of the blade portion of the woodwork cutting device is a series of grinding angle guides that extend in parallel relationship with the angle or plane of the beveled cutting edge.

Abstract: A carpenter's tool for use in construction of wood framed structures includes an elongated handle having one end sharpened for penetration into wood and a bar pivoted to the handle adjacent the sharpened end. A sharpened member at the outer extremity of the bar has a tip extending in the direction of the sharpened end of the handle. An L-shaped hook may also be attached to the handle, preferably on the side opposite the bar side. The tool is useful in enabling one person to adjust the position of a warped or twisted wood structural member with one hand, leaving the other hand free to fasten the member in the correct position.

Abstract: A tool for countersinking nails into a workpiece has a base member, which is formed of resilient material, and has a generally flat bottom section resting on the workpiece. A metal guide is mounted in the base member. The guide has a central opening for receiving a nail in its bottom. A rigid cap member on the base above the guide has an aperture through it, and a nail set extends partially upward out of the aperture in the cap and extends into the opening in the guide above the nail for transmitting impact from a hammer on the nail. The bottom of the guide member is recessed from the bottom surface of the base so that the metal will not contact the workpiece. The cap has a greater diameter than the guide so that if the cap is struck when the bottom or the nail set is below the top of the workpiece, an impact on the cap is not transmitted to the guide but will be absorbed in the resilient material of the base. A nail starting section integral with the base member extends laterally outward.

Abstract: A plane in which the cutting blade is fixedly mounted, and a portion of the sole plate is adjustable relative to another portion thereof in order to adjust the depth of cut of the plane. As distinguished from conventional planes in which the cutting blade is adjustably mounted for movement along the longitudinal axis of the blade in order to adjust the depth of cut of the plane, the cutting blade of the plane disclosed herein is fixedly mounted with the cutting edge coincident with the lower edge of the sole plate, and a forward portion of the sole plate is movable in a direction perpendicular to the plane of the rearward portion of the sole plate to adjust the depth of cut.

Abstract: An improved guide assembly for a honing mandrel including an elongated support member having opposite surfaces and spaced side edges, the contour of the elongated member being such that portions of the elongated member are able to flex relative to each other, at least two elongated parallel rack gear members having corresponding ends connected at spaced locations to extend in parallel relation extending perpendicularly from one of the opposite surfaces of the elongated member, and an elongated work engaging member having a first portion positioned adjacent to the elongated support member on the surface thereof opposite from which the rack gears extend and a second portion extending outwardly from the first portion for engaging a surface to be honed, and means connecting the work engaging member to the elongated member.

Abstract: Disclosed is a pencil sharpener adapted to sharpen pencils of a plurality of different sizes and to a method for making such a sharpener. The simplicity and convenience afforded by the sharpener enable the provision of an elegant outer appearance, especially suitable for cosmetic pencil use. The pencil sharpener (10) comprises a point cutting assembly (20) having a cylindrical pencil guide (21), a nestable first sleeve (30) having a smaller interior opening (32), and a second adaptor sleeve (40) having a yet smaller interior opening (42). The adaptor sleeves can be held by adaptor holding means comprising a projection (28) within the cuttings holder means (50) when not in use.

Abstract: A pneumatic power tool for tightening screw joints comprises a primary motor 11 for the high speed running down sequence and a secondary motor 12 for the high torque final tightening sequence. The tool includes a coupling gearing 18 providing a high ratio gearing for the secondary motor 12, a gearing of a substantially lower ratio for the primary motor 11 and a one-way clutch 30 by which the secondary motor 12 is automatically engaged at decreasing tightening speed. An air supply valve 33 is employed to substantially reduce the air consumption of the tool by keeping the air supply to the secondary motor 12 shut until a certain degree of tightness in the joint is obtained which by the supply valve 33 is experienced as an increased back pressure from the primary motor 11. At a back pressure corresponding to the predetermined certain degree of tightness in the joint the valve 33 is opened and the secondary motor 12 is energized.

Abstract: The invention relates to improvements in polishing machines incorporating a rotating plate. The upper face of the rotating plate is provided with a groove of circular section, in which is removably retained the base of a collar or screen, which defines on said plate two separate zones for rough-machining and finishing. The invention also relates to the mode of heat-conditioning the plate with the aid of nozzles disposed in the bottom of the tank for spraying a liquid against the lower face of said plate.

Abstract: A screw driver kit has four driver blades in a magazine tube inside the handle. The tube has four separate holes for each driver blade and can be turned around by pushing with fingers so that each hole can be aligned with the central hole of the driver blade holder whereby each driver blade falls down into this hole and protrudes out of the driver blade holder if the handle is tilted down. A clamping head mounted on the driver blade holder is manipulated with fingers. When the driver blade completely sticks out of the driver blade holder, the clamping head is released back to its normal position and then the driver blade is caught steadfast by three steel balls which operate in ball holes in the lowest part of the driver blade holder. To change a driver blade, the clamping head is released and the tool is tilted upward, whereby the driver blade will drop by its own weight into the straight hole of the magazine tube. The tube is then rotated to choose another driver blade.

Abstract: A screwdriver capable of being operated conventionally by the handle as a manual drive and alternatively being capable of being connected to a power drill so that it may be driven automatically. The screwdriver includes a conventional shank and tip at its end to engage the head of a screw. The handle has a chamber within which a coupling is slidably mounted. When the coupling is in an extended position a substantial part of it is exposed, so that it may be engaged by the chuck of a power drill. When the coupling is drawn into the chamber it does not interfere with conventional use of the screwdriver.

Abstract: A device is disclosed herein for aiding in properly connecting the threaded segment of one object, for example a spark plug, to a complementary threaded segment of a second object, for example an engine block including a complementary threaded hole. This device is designed so as to be capable of applying sufficient torque to the first object to loosely connect its threaded segment to the threaded segment of the second object in a properly threaded fashion. On the other hand, the device is designed so as not to be able to apply sufficient torque to the first object to connect together the threaded segments in a way which would strip or otherwise damage the threads. In this way, once the two objects are loosely connected together in a properly threaded fashion, a second device, for example a standard socket wrench, can be utilized for tightening the two objects without fear of damaging their threads.

Abstract: A key for a tamper-resistant fastener having three sockets, one below the other, one of the sockets being eccentric relative to the center axis of the fastener. The key comprises a flat blade portion having integral upper, middle and lower insertable portions, the center axis of the middle insertable portion being off-set from the center axis of the key. The width and length of each of the insertable portions corresponds respectively to the diameter and depth of the upper, middle, and lower sockets. The upper and lower insertable portions of the key prevent tilting of the key when torque is applied by the off-centered middle section to the eccentric middle socket of the fastener.