Abstract: A pair of scissors with replaceable blades, comprising a pair of blades, a pair of grips each having a blade-connecting mechanism which permits the blades to be replaceably engaged with the grips includes a pair of locking members, a pair of controlling push blocks, a pair of cover members and a pair of springs. Each of the blades has a lower end portion grips formed with reverse hook-like teeth and each of the grips is formed with an engaging recess for receiving the lower end portion of the blade. A projecting block and a notch are respectively formed on upper and lower sections of inner side of the recess. A slide channel is formed beside the notch and a rib is formed on an outer and a lower sides of the recess. Three locking teeth are formed on an outer side of each locking member and a slant triangular cut is formed on an inner lower corner of the locking member.

Abstract: The scissors are provided with replaceable thin insert blades. The blade insert carriers of the scissors are recessed to receive the blade inserts fixed in place by a screw. The edge-to-edge force at the cutting point is controlled by the bend and the twist of the blade insert carriers. The fixation of the blade inserts by the screw in the front half of the blade insert carriers and their twist in the back section, leaves the cutting edge of the blade inserts unsupported near the pivot point of the scissors. Torsion of the blade inserts allows for easier control of the edge-to-edge force near the pivot without a penalty of the high edge-to-edge compliance towards the tips. Use of replaceable blade inserts eliminates the need for resharpening of the cutting edge and allows for use of the special purpose blade inserts with the same basic scissors.

Abstract: Interchangeable finger and thumb ringlets are described for improving the comfort and control of scissors and pivoted grasping instruments. Flexible ringlets having various sizes are removably attached to the handle portions of such instruments, thereby providing proper fit to the user's fingers.

Abstract: A nipper for pruning sticks, stems and branches is provided with an anvil having locator hooks which partially block the jaw opening of a nipper to limit the size of sticks, stems and branches to be cut. The locator hooks further position sticks, stems and branches for cutting such that larger sizes are subjected to higher cutting forces, and are shaped to enhance retention of sticks, stems and branches for cutting.

Abstract: An improved structure for a pair of scissors with pincer-clip, especially for the control of the scissors' opening angle when it's opened, and the locking of the scissors when it's closed. This pair of scissors with pincer-clip can achieve its function by moving on one side. The limitation of its opening is achieved by a O-shape buckle that connects to the spring coils on one side and a long groove of the handle on the other side. Following the opening of the pair of scissors, the O-shape buckle moves up and down in the long groove, thus controlling the opening angle of the pair of scissors by the distance between the spring coils and the pivot, and locking the pair of scissors when it's closed.

Abstract: To facilitate manufacture and eliminate the possibility of sharp corners projecting from metallic elements of a can opener, a bearing bushing (21) for a feed wheel shaft (20), to which a serrated feed wheel (15) and a twist knob (16) are connected, the handle is formed of two plastic handle shells (18, 19) of which an upper handle shell (18) is a unitary molded element together with the bearing bushing (21) and a counter or guide surface (24) in part surrounding the feed wheel. The bearing bushing extends through a hole in the metallic lever (11, 12) and into an opening of the lower handle shell (19), preferably forming a snap connection, with a slightly projecting shoulder, extending above the lower handle shell.

Abstract: A hand tool comprising two cooperating members each having a handle and interconnecting arrangement for interconnecting the members in mutually overlapping relationship so as to permit movement of the members relative to one another by the handles.At least one of the cooperating members is provided with a receiving unit adapted to movably receive a blade. The receiving unit is defined by at least an interior part thereof.The blade comprises an elongated body having first and second cutting portions spaced from each other by a central portion. The first cutting portion is defined by at least a first cutting edge and a first rear portion. The second cutting portion is defined by at least a second cutting edge and a second rear portion.The blade is positioned within the receiving unit of the cooperating member in such a manner that the first cutting edge faces the other cooperating member and the second cutting edge faces the interior part of the receiving unit.

Abstract: A cutting implement of the scissors type is disclosed herein having a pair of elongated shanks pivoted together midway between their opposite ends so that opposing cutting edges converge together as the shanks are closed towards one another. The cutting edges are carried on an exposed edge marginal region of replaceable blades insertably disposed into open receptacles on the respective shanks. Each shank receptacle is defined by sloping surfaces at the opposite ends of each receptacle and a pair of posts is provided in spaced relationship between the opposite opening ends. The blade is formed with a plurality of recesses along the edge opposite to the cutting edge leading into longitudinal slots whereby the shank posts are indexed or registered with the blade recesses for snap-lock retention therewith into the slots.

Abstract: Interchangeable finger and thumb ringlets and a hand-adjustable tensioning device are described for improving the comfort and control of scissors and pivoted grasping instruments. Flexible ringlets having various sizes are removably attached to the handle portions of such instruments, thereby providing proper fit to the user's fingers. Additionally, tensioning for such devices is generally provided by an adjustable screw or by a non-adjustable rivet. The subject invention teaches the use of a single-piece, hand-operated tensioning device installed at the pivot location for providing this function.

Abstract: Scissors with replaceable cutting blades include a pair of handles to which cutting blades are detachable, the handles being pivotally connected to each other by a screw. Each handle has a longitudinally extending groove in which a shank of the corresponding cutting blade is inserted, and a retaining plate is disposed so as to cross a portion of the groove. The shank of the cutting blade inserted into the groove is supported on the handle by the retaining plate so that screws are not needed to attach the cutting blade to the handle.

Abstract: disassemblable scissors which utilizes a releasable pivot joint between pivotable scissor halves. The pivot joint is formed in the scissor halves between the blades and the handles of the scissor. The scissors halves are pivotally retained together over a range of cutting motions by a retaining assembly. The retaining assembly retains a portion of one of the scissors halves movably within a retaining portion of the other of said scissors halves at least over the range of cutting motions. To release and disassemble the scissors, the scissors halves must be pivoted at least past the range of cutting motions to a point where the portion of the one scissor half is no longer retained by the retaining portion of the other scissors half. In this position, the two halves can be transversely pulled apart.

Abstract: Shears are provided with a cutting mechanism for obtaining maximum leverage at the point in the cutting stroke corresponding to the maximum resistance. The cutting mechanism comprises cooperating first and second shearing members and a lever arm. The lever arm is pivotally connected to the first shearing member and a sliding connection is effected between the second shearing member and the lever arm.

Abstract: The thread snips include two metal blades connected together, adjacent their rounded, rear ends, so that their pointed, front ends may be moved or pivoted relative to each other, in planes generally parallel with the planes of the metal blades, between open and closed positions. The rearward portion of each metal blade has a reduced thickness. Plastic inserts are molded onto these rearward, reduced thickness portions so that the inner facing side surfaces of the plastic inserts define a smooth continuation of the inner facing side surfaces of the metal blades. The rearward ends of the plastic inserts are thicker than their forward ends. The increased thicknesses force the rear ends of the metal blades apart, and thus cause the blades, forward of the point of connection, to bend or arch.

Abstract: A cutting implement of the scissors type is disclosed herein, having a pair of elongated shanks pivoted together midway between their opposite ends so that opposing cutting edges converge together as the shanks are closed towards one another. The cutting edges are carried on an exposed edge marginal region of replaceable blades insertably disposed into open receptacles on the respective shanks. Each shank receptacle is defined by sloping surfaces at the opposite ends of each receptacle and a pair of posts is provided in spaced relationship between the opposite opening ends. The blade is formed with a plurality of recesses along the edge opposite to the cutting edge leading into longitudinal slots whereby the shank posts are indexed or registered with the blade recesses for snap-lock retention therewith into the slots.

Abstract: A single hand-held scissors for cutting hair including a first and second member pivotally interconnected intermediate between their ends via a hinge joint. The end of both members having ring-like finger holds formed integrally with handles. The opposite end of the first member is formed as a first jaw containing an integral longitudinal recess for releasably securing a straight-edged razor blade therein. The second member has its opposite end formed into a second jaw containing a longitudinal recess in vertical alignment with the recess in the first jaw. The hinge joint includes cooperating face having laterally extending shoulders which engage to limit the opening and closing of the scissors. The shoulders for limiting the closing of the scissors prevent the razor blade edge from engaging the lower edges or bottom walls forming such recess in the second jaw when smoothly cleaving hair disposed between the jaws.

Abstract: Replaceable blade type medical scissors are composed of scissor bodies and replaceable blades. Each of the replaceable blades is composed of a blade portion made of a metal plate which is bent such as to have an arcuate cross section and a retaining portion which is constructed by the metal plate bent into an envelope form which gradually increases in width towards the base portion. Each replaceable blade is adapted to allow plastic deformation and is integrally provided at the base portion of the blade portion. An insertion piece which is provided at the end portion of the scissor body is inserted into the retaining portion of the replaceable blade while the retaining portion is slightly expanded. The replaceable blade is removably secured to the scissor body by the elastic contracting force of the retaining portion.

Abstract: A cutting device comprising first and second members each comprising a blade at one end and a handle at the other end, a pin on which the first and second members are pivotted so that the blades work with a scissor action for cutting purposes, and a clip which extends longitudinally along an outside face of one of the first and second members, the cutting device being such that the first and second members are retained on the pin between an abutment part at one end portion of the pin and the clip, the clip slides in a groove at the other end portion of the pin, the clip comprises a projection engaged in a complementary recess in one of the first and second members so as to hold the clip in a locking position on the pin, the clip further comprises a flat strip having at one end a slotted portion and at the other end the projection, the strip being bent on itself to define a limb parallel with the slotted portion and further bent so toward the slotted portion such that the projection extends substantially ortho

Abstract: A scissors has first and second arms with each arm having a finger receiving portion at one end. There is a removable metal blade having an outer edge and an inner cutting edge for each arm. A flange on each arm abuts the outer edge of the respective blade. A pair of inward projections on each flange each has a forwardly extending nose portion and a sloping rear portion and is engaged in a complementary opening in the adjacent blade. A finger extending inwardly from the forward end of each flange overlies a portion of the adjacent blade and is adapted to be engaged by the blade of the other arm when the scissors is in the closed position. A pivot structure passes through the arms and blades securing them together.

Abstract: The invention comprises a hydraulic rescue tool which is useful in extricating victims form traffic accidents. The tool can perform three basic functions: pushing, pulling, and cutting. The tool comprises a pair of pivotably mounted arms connected to each other within a common yoke. The arms are forced together or apart by a hydraulically operated piston. Attached to the arms are a pair of cutting blades. The arms are made of a graphite laminate composite material for increased strength.

Abstract: Pinking scissors having replaceable cutting blades. The replaceable cutting blades have different edges to provide different types of pinking designs such as scallops, triangular sections, rectangular edges and the like. The replaceable blades are of rigid L-shaped construction one side serving as a base fitting against the supporting stem of the scissors and the other side having a cutting edge. Stop means are provided for registry on the supporting stems which are bifurcated and spaced apart to provide for easy reception of the replaceable blades. A special feature resides in the provision of a reversible cutting blade with both edges of the L-shaped sections having a pinking cutting edge. When not in use one section with the pinking edge serves as a base and when desired to provide a different design the blade may be removed and reversed with the unused portion serving as cutting edge and the section previously serving as a cutting edge used as a base fitting against the support stems.

Abstract: A bolt cutter wherein there are removably replaceable cutter blades supported in cutting relation by pivotally connected jaws and wherein the jaws are structured to transmit the force couple for cutting to the blades at opposite ends and at opposite sides. Pivotal movement of the jaws relative to each other is effected by a cam roll and cam groove interengaged by the lever handles connected to the jaws. The cam groove is structured to enable changing its contour to thereby change the mechanical advantage.

Abstract: A scissors comprising first and second pivotably connected arms, each including a finger engaging portion and a remote tip portion. Each arm is constituted in entirety of a plastic material and has a recessed seat in which a metal blade is mounted. The blade is removably mounted in the seat by engagement of a hole in the blade with a corresponding projection on each arm in the respective seat from the bottom surface thereof. The projection is of truncated conical shape and the hole in the blade is sized and shaped to engage the respective projection and enable removal of the blade by the elasticity of the plastic material of the projection.

Abstract: The present invention relates to a shears wherein the handle and the blade part of the shears are separately manufactured and the two blade parts are fitted and secured between two handles by means of a cam mechanism. By operation of the foregoing cam mechanism, the angle between the blade part and the handle can be changed.

Abstract: A scissors with replaceable sheath type blades which is fitted over the protrusions provided at the portions in front of the pivot of the pair of components of scissors. With a round depression in the outer side near the pivot of each protrusion and with a boss having spring action projected into the space formed by the blade and sheath outer member of the sheath type replaceable blade, the scissors with sheath type replaceable blades with stable fit which is convenient in use and handling is obtained by fitting the boss of the replaceable blade in the depression of the protrusion.

Abstract: A scissors, particularly a household- or tailor- scissors, including eyes made of synthetic material or the like arranged on handles thereof, including forks formed on the handles, the forks each defining an outwardly directed fork opening, and eye rings insertable in the forks, respectively, in the fork openings, respectively, on the handles.

Abstract: A pair of straight pattern snips is provided which is designed to be employed for performing a cutting operation on an article. The snips consist of a pair of integral members, one having a left-hand configuration and the other a right-hand configuration. The pair of members are operatively connected together by means of a pivot bolt so as to be capable of pivotal movement relative to each other. Each of the members includes a handle formed at one end thereof and a jaw at the other end thereof. The grips, i.e., ears with which the handles are provided are skewed or rotated from the plane of the handles to provide a more comfortable grip or hold of the snips for the user. The snips are further provided with detachable blades. The latter blades are mounted on the jaws in blade pockets, i.e., recesses formed in the latter jaws for this purpose through the use of conventional fasteners.

Abstract: A cutting implement, such as a pair of secateurs, either of the anvil type or of the cross over type, in which two handles are pivotable relative to one another, the first of the handles including a removable blade having a pair of substantially parallel fingers which pass within one of the handles on either side of the pivot, and a detent is provided on one of the fingers and said other handle, a leaf spring, which normally urges the handles to an open position, holding the detent in engagement. In the anvil construction, the anvil is formed in one piece with the other handle, by bending two portions of the other handle in opposite directions, so that they both lie in a plane substantially perpendicular to the blade.

Abstract: The invention comprises a hydraulic rescue tool which is useful in extricating victims .[.form.]. .Iadd.from .Iaddend.traffic accidents. The tool can perform three basic functions: pushing, pulling, and cutting. The tool comprises a pair of pivotably mounted arms connected to each other within a common yoke. The arms are forced together or apart by a hydraulically operated piston. Attached to the arms are a pair of cutting blades. The arms are made of a graphite laminate composite material for increased strength.