Abstract: A layer piercing paper punch is disclosed, in which a plurality of cutting hole plates is provided on a base between the location of a cutting hole and an upper cutter bar for perforation. Each of the cutting hole plates has a sharp-pointed portion on the front end and a cutting hole near the middle part. The cutting hole plates lying parallel to the surface of the base and in an overlapping position are always maintained by a position-fixing member with cutting holes in alignment with the upper cutter bar and the lower cutting hole on the base thereby enabling the cutting hole plates to perform up and down movement without any movement on the sides during the perforation of a paper file.

Abstract: A cutting apparatus having a holding member for holding a sheet; a plurality of cutter member for cutting the sheet held by the holding member; and a shifting member engaged by the plurality of cutting member, for shifting the plurality of cutting member in parallel with each other. The shifting member is so designed that it can shift the cutting means without aligning them perpendicular to a cutting direction during the cutting of the sheet.

Abstract: The apparatus comprises, between each pair of upper and lower bearing blocks, a shim or strut which provides a support for two bearing blocks on one another. Each of the upper bearing blocks is extended, in an upper portion and toward an inside of said apparatus, by a cantilevered portion subjected to action, in a downward direction, of a pressure exerting vertical jack mounted in an upper portion of said apparatus. A vertical and transverse plane containing a central axis of each pressure exerting vertical jack is situated between a vertical and transverse plane in which is situated a shim or strut placed between the bearing blocks and a vertical and transverse plane of raceways for an upper cutting cylinder and a lower cutting cylinder.

Abstract: Method of cutting a three-dimensional shaped piece of a material having large pores out of a block by trimming the block with adjacent cuts of a predetermined width guided along planes extending tangentially to the surface of the shaped piece whereby scrap of the material is produced, and cutting kerfs into the scrap no later than the trimming along planes extending radially relative to the shaped piece surface and longitudinally substantially parallel to each other, the cutting planes being spaced from each other at the shaped piece surface a maximum distance corresponding to the predetermined width of the adjacent cuts. For this purpose, an ultrasound assembly may be used, which comprises a knife which has a shaft portion extending in the direction of vibration of the knife and a cutting portion attached to the shaft portion and extending transversely to the direction of vibration, the shaft portion and the cutting portion having cutting edges.

Abstract: A method for providing edge-side tracks of holes in a printing belt for a rotary printing machine with at least one counter pressure cylinder and at least two printing belt cylinders around which the continuous printing belt carrying printing forms or printing pictures is led, with one printing belt cylinder being provided with radial ring of pins in the region of each of its ends, wherein the pins mesh with holes of the edge-side tracks of holes of the printing belt. The printing belt is stretched with a tension corresponding to the tension with which the printing belt is led around the printing belt cylinders in printing operation. Said state of tension is maintained during the punching of the tracks of holes such that the punched holes maintain their circular shape even in the stretched state of the printing belt in a printing machine and that the distance of the spacing of the holes of the tracks of holes exactly corresponds to the spacing of the pins of the radial rings of pins.

Abstract: A bag holding device for coin bags which require periodic removal and replacement. The device comprises a tube with an open upper end which receives coins and an open lower portion which fits into the mouth of a coin bag. A support bracket receives the tube. The bracket forms an elongated track to support and guide the tube during a sliding movement between an advanced position where the tube receives coins and a retracted position where the tube is accessible for removal and replacement of the coin bag. A clamping device at the advanced position of the tube grips both the tube and a coin bag on the lower portion of the tube. This device holds the coin bag on the tube and holds the tube in an advanced position.

Abstract: A grommet assembly useful in attaching articles to a carrying structure includes a first and second annular grommet piece, each conformed for mating engagement to the other, the first grommet piece including a central boss extending axially from one side of an annular base provided with a tapered cavity therein. The second grommet piece is similarly provided with an axial boss tapered on the exterior to fit within the cavity. The free edge of the second boss includes a peripheral bead conformed to engage an interior recess in the cavity. The grommet pieces may be joined to each other by a flexible strap and the first piece may include a bedded washer on the surface opposite to the first boss. Both the grommet pieces and the strap may be formed of a resilient material structure and when the bosses are mated in each other the subsequent compression of the assembly will expand the combined sectional dimension thereof for compressing against the surfaces of any suspension device.

Abstract: A method and apparatus for practicing the method by which a reciprocating saw may be utilized to cut within the edges of a panel of material without the necessity of providing a pilot hole or the like for the saw blade, wherein the saw blade is configured in such manner as to taper at the end not attached to the saw motor in order to come to a point and wherein a knife edge is supplied along the edges of said tapered portion of said saw blade, wherein the saw blade at its pointed and tapered end is allowed to cut through the panel of material being sawed with the sawing action commencing immediately after full penetration of the blade through the material.

Abstract: An adaptable system for precise cutting ends of 2.times.4 type lumber to form chords and webs for wooden roof trusses basically includes (a) a protractor unit formed of a plate member and a guide member, (b) horizontal table means including an upper surface supporting the protractor unit and upon which the lumber is supported in use of the system and (c) a radial arm saw. Stucture details of the protractor unit are disclosed. The system is relatively much less expensive than prior known precision roof truss member cutting devices and its method of use is quickly learned by sawyers.

Abstract: A method of severing a continuous strip having transversely arranged perforations into separate segments including advancing said strip along a predetermined path; deforming a portion of said strip at said transversely arranged perforations; sensing the location of said perforations by causing contact between a sensor and said deformed portion; advancing the sensed perforations a predetermined distance to a location directly in line with a severing knife; and causing the knife to sever said deformed portion at said transversely arranged perforations to form a separate segment.

Abstract: The invention is a semiautomatic stapler for affixing a tag from a roll of tags onto a surface. The stapler includes a rotatable pivot indexing arm for moving the tag into position for affixing onto the surface. A cylinder may be provided for rotating the indexing arm, and an index stop pin is provided for limiting pivotable movement of the rotatable pivot indexing arm. In this way, tags of various lengths may be affixed by the stapler. The roll of tags is held within the automatic stapler.

Abstract: For dividing a chunk of material which comprises areas tending to deform as well as rigid areas, a cutter with a spiral cutting edge is provided. The cutting edge has two sections of which the first in the direction of rotation, is unserrated and undergoes a relatively rapid increase of radius. The second section in the direction of rotation is serrated and follows a minimal increase of radius. With a cutter thus designed, material can be cut smoothly in the region of its deformable portion and can be sawed just as smoothly in the region of its rigid portion.

Abstract: The disclosure relates to a plate driver head and more specifically to a plate driver head for use with a power impact tool. The plate driver head includes a steel head portion and a shank portion which can be received in most commercially available power impact tools. The drive head is provided with supporting gussets on opposite sides of the shank which extend to the upper surface of the head to provide uniform pressure distribution over the entire head work surface. The head is magnetized to hold the workpiece steady while being inserted into a surface. Several embodiments are disclosed, one of which is a flat uninterrupted work driving surface while another embodiment includes a recess in the driving surface to accommodate different configured workpieces without damaging them during the insertion procedure.

Abstract: An automated cutter bed employs a sealer which is mechanically coupled to a tool carriage and moves with it along a first coordinate direction. A first roller is connected with a second roller disposed at the take-off end of the table by an air impermeable sheet which is tensioned between the two rollers by a resilient member housed within each of the rollers causing a preload to be exerted on the air impermeable sheet material. The first roller moves between ends of the table paying out a length of the air impermeable material. As the carriage moves to the cutter datum, equalization is effected by the preloads given in each of the first and second rollers.

Abstract: In order to prevent a looseness of bolts after main clamping, a nut runner of the present invention comprises a torque sensor for detecting a clamping torque T of a clamping unit, and a torque comparison means for comparing the clamping torque T with a clamping completion torque ST. The nut runner further includes a torque control means which gradually reduces a rotational torque of the motor until a resilience such as a torsion accumulated in the clamping unit is entirely nullified when the clamping torque T reaches the clamping completion torque ST. This ensures an effective cancellation of an inverse torque arising from the resilience and acting in the direction loosening the bolt, thus preventing the bolt from loosening.

Abstract: An indexing coupling for a drill includes a hollow inner race, a hollow outer race, and a sleeve member. The hollow inner race and hollow outer race are affixed to one another by a plurality of ball members which are positioned by a plurality of detents in the hollow inner race. The balls also extend into holes in the hollow outer race. When the balls are positioned within the holes in the hollow outer race and within the detents in the hollow inner race by the sleeve member, the hollow inner race and the hollow outer race are rigidly connected one with respect to the other. When the sleeve member is moved the ball members become disengaged from the hollow inner race thus allowing indexing of the outer race with respect to the hollow inner race. This indexing of the hollow outer race with respect to the hollow inner race allows selective rotatable indexing of the drill housing with respect to the nose piece.

Abstract: A securing base having a round base of three layers to support a pressing disc combined with a supporter, a shaft passing throught the pressing disc to engage the round base by means of threads, a ball at a bottom of a movable rod fitting in a spherical hole in an upper portion of the movable rod, the ball having a plurality of small holes for a pin end of the supporter to selectable in an angle needed.

Abstract: A punching press according to the present invention employs a servo motor as the driving source of the punching operation to achieve fine control, and exhibits a performance which is equivalent to or higher than that of a conventional punching press which employs a hydraulic cylinder. A hammer member which performs the punching operation is coupled to a stroke member which performs a stroke motion. The stroke member is coupled to a motion converting unit which converts the rotational motion of a servo motor into a stroke motion.

Abstract: The present invention relates to an improved surgical stapler that prevents refiring of a spent staple cartridge. More specifically, this invention includes a simple, inexpensive mechanical locking mechanism which prevents refiring of a spent staple cartridge by blocking the path of the firing and/or cutting means of the stapler.

Abstract: A fastener driving device includes a body, a driver guide extending downwardly from the body for driving fasteners by a driver, a first abutting member mounted on the driver guide and having a first reference surface for abutment on an edge of a work to be fixed, and a second abutting member having a second reference surface for abutment on an edge of another work which has been previously fixed. An adjusting mechanism is provided for adjusting the position of the second abutting member relative to the first abutting member. The adjusting mechanism includes a support member mounted on the body and supporting the second abutting member in such a manner that the second abutting member is slidably movable along a direction substantially perpendicular to a longitudinal direction of the driver guide. A tightening mechanism is operable for fixing the position of the second abutting member and for permitting movement of the second abutting member.