Abstract: A method and a device for protecting against a press overload is disclosed whereby, when an excessive pressure which exceeds a specified hydraulic pressure is transmitted to a pressure chamber of a press cylinder, this excessive pressure activates the punching of a shear plate by a shear piston and the excessive pressure is released by the shear piston.

Abstract: A hydro-impulse screwing device comprises a rotary drive motor, a power source for the motor, a drive shaft, a pulsating hydraulic drive connecting the motor to the shaft and a power cut-off for the motor. The load at which the power cut-off functions is adjustable. The tool has a borehole extending through the length of the shaft, a conduit for conducting hydraulic fluid from the drive to the borehole, a valve in the borehole movable from a closed position to an open position in response to hydraulic pressure corresponding to a predetermined load to allow hydraulic pressure from the drive to actuate the power cut-off, a biassing element in the borehole for biassing the valve toward a closed position against the hydraulic pressure, wherein the force of the biassing element is adjusted at the end of the drive shaft to change the load at which the power cut-off operates.

Abstract: A chain saw guide bar comprises an elongate plate member having a rounded tip and providing guide means for a saw chain around its periphery. The plate member has a network of intercommunicating passageways provided between its lateral faces and extending between multiple points on its upper and lower periphery so as to permit the flow of fluid therebetween. This arrangement provides efficient transfer of lubricant or other medium to all points on the guide bar periphery and can be up to 30% lighter than conventional designs.

Abstract: A punching apparatus used for high speed punching of holes in a workpiece, such as a ceramic green sheet, for use as a printed-circuit board. Upper and lower die blocks, stationary relative to each other, are provided, with punch pins fixed in two dimensions by multiple guides. A fluid passage is provided within the lower die block for providing gaseous lubrication and cleaning of the punch pin while in operation.

Abstract: A fiberglass insulation cutting tool is described as including a blade extending forwardly from the front portion of a one-piece housing having a handle grip for the user to grasp onto. The front portion of the tool is rounded at the bottom and is tapered inwardly from its sides, to compress under pressure the fiberglass insulation to be cut by the blade as the tool is dragged rearwardly in use.

Abstract: To improve the process control in a method and a corresponding device for regulating the rotational speed of agitator ball mills which have a grinding chamber with grinding balls contained therein, a rotatably mounted agitator body arranged in the grinding chamber and a drive for the agitator body, the rotational speed n of the agitator body being measured, the torque M of the agitator body is measured and the rotational speed n is so regulated that the rotational speed n, the torque M or the mechanical agitating capacity P satisfy desired values predetermined according to the relationP=2.pi..multidot.n.multidot.M(.pi.=3.141 . . .).

Abstract: A chain saw in which a body having an engine, carburetor and throttle rod and a handle frame on which is located a fitting mounting a trigger are connected with each other though vibration damping members. The trigger is provided with a plurality of bends between a contact part and a finger grip so as to have a predetermined spring effect. The contact part is arranged in opposition to the end of the throttle rod and spaced from it. As contact part abuts the rod and the chain saw is flex the resilient spring effect from the bends reduces the vibration transmitted to the handle.

Abstract: An edge planer including a tube having two end portions, a slot longitudinally formed in the tube, one or more blade edges formed in the tube, a strip engaged in the slot, a handgrip engaged on each of the end portions of the tube, screws fixing the handgrips and the strip together, whereby, the blade edge is located between the handgrips in order to plane an edge portion of a workpiece.

Abstract: A pry type hand tool for making drain holes in the bottom wall of a lid receiving channel on the top rim of a paint can. The tool has a handle portion and a bifurcated end where the two legs are offset laterally and longitudinally. One leg has an inwardly turned end, directed toward the other leg, forming a shallow channel and the other leg has a sharpened tip and knife like cutting edge.

Abstract: A pile driving and pile removing method comprises the step of causing a water-in-oil type water swellable polymer particle emulsion to be present on the pile surface or in the vicinity thereof during driving or extraction. The presence of the emulsion reduces the frictional resistance between the pile and the ground, enabling smooth and easy driving and removing of the pile.

Abstract: An improved clear-wrap dispenser is provided which consists of a housing having a bottom wall, a front wall and a pair of side walls, so as to form a compartment therein with an open back and an open top. A generally U-shaped handle is pivotally mounted to the side walls of the housing, so that when in an upright position the handle can be gripped to carry the housing. A roll of clear-wrap is rotatably positioned within the compartment in the housing from the open back between the side walls, so as to be dispensed therefrom through the open top. A cutting blade is disposed within the housing along a top edge of the front wall. A mechanism is for retracting and extracting the cutting blade with respect to the top edge of the front wall of the housing by pivoting the handle on the side walls, so that when retracted the cutting blade will be safely stored and when extracted the cutting blade will be able to cut the clear-wrap being dispensed therefrom.

Abstract: In accordance with the present invention there is provided a pneumatic slide hammer for removing a plug from a tube or other structure including a percussive piston, a housing for containing the percussive piston and for connecting to the plug to be removed from a structure, and a slidable cylindrical valve for controlling the flow of air under superatmospheric pressure to force the percussive piston against to impact against the housing and force the plug from the housing.

Abstract: A base mount supports a secondary mount in surface facing relation and a pair of these mount assemblies are positioned in spaced relation to receive a pallet stringer between them. The mounts support circular cutter discs which are disposed in axially aligned pairs and also in laterally aligned pairs whereby to be capable of severing nails on opposite edges of a stringer in a single pass of a stringer through the space between the laterally spaced mounts. The base mounts support the secondary mounts and are capable of being retrofitted to existing machines. The base and secondary mounts are secured by cross plates that have a cutting edge to form a backup cutter for the cutter discs. The secondary mounts are hingedly supported on the base mounts by a cross hinge at the rear of the mounts and a spring and limit assembly is provided between the mounts to allow adjustment of the mounts for different dimensioned stringers.

Abstract: The present invention provides an apparatus and method for automatically counting and permanently disposing of tickets and similar markers, such as those dispensed at arcades. The apparatus employs motor driven wheels to draw tickets through it in very rapid fashion, a sensor and counter to tally the number of tickets, and a blade to permanently destroy the tickets. The present invention lends itself to many security and accounting protections presently unavailable using conventional manual systems.

Abstract: The corners of stacked sheet material, for example overlay material being employed in the formation of book covers, are simultaneously removed by a cutting appliance having plural knives. Stacks of the sheets of overlay material are delivered to the cutting appliance by carriers which move along a continuous path and, after the cutting operation, the carriers deliver the sheet material to the feed station of a downstream processing machine.

Abstract: A chain cutter comprises an endless chain body including a plurality of plate-like flaps connected to each other to provide angular movement in a common plane; each of the flaps has an end face on a inner peripheral side of said chain body, and at least a part of said flaps has a cutting device at the end face.

Abstract: This invention provides a device to shave concave areas utilizing a blade bent into an arc where the blade sharpened edge is mounted on a cylindrical or conical surface in a convex shape. In one embodiment the lead in surface is a spherical segment with grooves to guide hairs and the blade edge is mounted projecting slightly over a slot located at the intersection between the cylindrical and the spherical surfaces. This method allows nick free shaving of concavities.

Abstract: An "S" shaped, double-blade carpet cutter is provided which simultaneously cuts the edges of two adjacent, overlapped carpets from the back side, to provide closely matching, abutting edges which can thereafter be seamed. The lower carpet edge is inserted into one opening of the "S", and the overlapping edge of the upper carpet is inserted into the other opening of the "S". One blade is mounted on the first or top arm of the "S" and the other blade is mounted on the second or middle arm of the "S", and the blades extend perpendicularly out of the plane of the "S" and are aligned to cut along a single seam line. A handle is attached to the third arm of the "S" to allow the cutter to be pulled along the overlapped carpet edges.

Abstract: A multi-purpose scraping apparatus is disclosed which enables the interchangeability of scraping blades. The apparatus is made of a handle, a shank and a blade receiving assembly, the shank being interposed between the handle and the blade receiving assembly. The blade receiving assembly comprises a back plate, a spring plate, a spring tongue and means for securing the spring plate to the back plate. The spring tongue extends from the spring plate and provides means for moving the blade receiving assembly from a gripping position to a releasing position. The back plate and the spring plate are thus constructed and arranged to cooperatively engage a blade to be used with the apparatus and to bias the blade receiving assembly in the gripping position. Thus, the spring tongue is moveable to effect movement of the blade receiving assembly from the gripping position to the releasing position.

Abstract: It is placed in a stationary manner in the top part of the machine and has a sharpening wheel (18) as well as a polishing device of the blade that eliminates the rough edges produced in sharpening.It has a frame (1) that incorporates a cover (3) that is subject to being collapsed in order to allow the unit to be cleaned. In the bottom the cover (3) incorporates a support fastened by means of a body (9) which is passed through by a central hole through which a shaft (12) passes whose top end incorporates a control (13) and in the bottom thereof the sharpening wheel (18) the shaft (12) being aided by a spring (14) whereby upon turning the control (13) the movement of the sharpening wheel (18) is produced until it makes contact with the cutting blade (2.) Upon releasing the control (13) the sharpening wheel returns to its original position, the cutting blade (2) remaining protected in the entire process.