Abstract: A tool changer for use with the manipulator arm of a robot or the like. A tool changer in which the manipulator arm is engaged with the end effector carrying the tool by a simple linear motion, and disengaged by a linear motion in the opposite direction, without requiring any separate control functions such as switch actuation or the like. A tool changer which also provides for transmitting mechanical, electrical or fluid power and/or control between the manipulator arm and the end effector, and one which can be utilized with any type of tool, sensor, transducer, and the like.

Abstract: A sealing construction is disclosed herein for a casing preferably for an electric shaver which is formed by first and second casing members which are to be pressed together through an annular sealing element to provide a seal between the sealing surfaces of the first and second casing members. The first casing member is formed in its sealing surface with an annular groove for retaining the annular sealing element in position, such sealing element being made of elastic material and having an axially projecting and rounded top portion above the sealing surface of the first casing member. Also projected on the second casing member is an annular plug of convex-shaped in cross section which aligns with said annular sealing element so as to be engageable with the rounded top portion thereof.

Abstract: This invention relates to a safety cutlery case with sharpening device in which resilient means and sharpening means are provided to secure the knives in place and to offer a sharpening when the knives are driven into or pulled out of the case.

Abstract: Dry shaver with an auxiliary frame displaceably insertable in the direction of the lower cutter, said frame being retained via spring-tensioned locking means in the end cheeks of a shaver housing or of a cutting head frame, and unlocked and removed in the removal direction by unlocking buttons, which act on the up ramps provided on the locking means.

Abstract: A cutting device with a safety lip to prevent the end of a blade of the device from causing injury to a limb when a wrapping or bandage is being cut therefrom.The device includes a handle and at one end there is mounted a cutting blade having a point and the point is covered by a blunt lip which engages the skin and will prevent injury as the blade is moved along the limb.In addition, the end of the handle where the blade is mounted is concave and acts as a surface to prevent bunching of the wrappings being cut.

Abstract: A folding knife comprising a handle transversely flanking a knife blade movable within a slot formed through the handle. A complementary fixed bushing and pivot hole on the handle and knife blade provide a positive lock for the extended knife blade, in conjunction with a spring-biased ball that is located within the bushing and which bears radially outward against the surfaces of the pivot hole. The knife blade is manually releasable from its extended position by application of manual pressure to the blade in a direction perpendicular to bushing axis. The spring-biased ball also acts in cooperation with a notch in the pivot hole to serve as a releasable detent for maintaining the knife blade in its folded position.

Abstract: In a safety razor having cutting edges directed towards each other across a gap, i.e. an opposed blade razor, the blade edges are each formed with undulating edges. The blade margins are preferably corrugated and the corrugations intersected by planar facets (12), the facets of the two blades being substantially in the same plane (T).

Abstract: A tool holder for use with a mounting system including a spindle having a central frusto-conical bore and a draw bolt positioned centrally in the upper end of the spindle bore. The tool holder includes a central cylindrical main body portion having an annular groove in its upper end; a lower portion extending downwardly from the main body portion and including attachment means for receipt of a suitable tool; and a reduced diameter conical neck portion extending upwardly from the upper end of the main body portion, concentrically within the annular groove, sized to pilot upwardly into the conical bore of the spindle and having a threaded central bore at its upper end threadingly coacting with the lower end of the draw bolt to pull the holder into the spindle.

Abstract: A handle and clipping receptacle provides a removable accessory for a nail clipper of the lever action type. A resilient body member defines a slot into which the clipper can be inserted and retained by a depression formed in the bottom of the slot. The clipper is retained also by flanges and cavities within the body member. Large inner cavities extend within the body member on both sides of the clipper to receive and retain clippings sheared by the clipper. Such clippings can be disposed by removing the clipper and inverting the body member.

Abstract: An aligning mechanism for power hand saws in the preferred structure of this disclosure is connected to a saw. The saw comprises a motor, a handle, and a blade. The mechanism comprises a guide member extending substantially in same direction as a cutting motion of the saw blade and an aligning device extending substantially transversely from the guide member. The aligning device is engaged to the guide member so that at least a portion of the guide member slides forwardly with a saw blade during guiding movements of the mechanism. The guide member comprises an elongated outer portion and an elongated inner portion. The elongated outer portion is hollow and the elongated inner portion is slidably engaged to such elongated outer portion. A resilient element is positioned on the guide member to urge the aligning device in a forwardly direction. The aligning device has an operable position and a non-operable position.

Abstract: A pruning shear with offset cutting blade is disclosed which includes in combination a pair of pivotally interacting blades which are capable of closing upon one another to sever a twig or small branch. A first blade is designed as a cutting blade having one side ground to form a gradually sloped first bevel. A more sharply sloped second bevel angularly intersects the first bevel to define an offset cutting edge. The second blade is provided with a pair of laterally spaced support anvils, which anvils define a clearance space to receive therein at least the cutting portions of the cutting blade. The cutting edge of the pruning shear cutting blade is pivotally movable into the clearance space in a manner to always position the cutting edge in spaced relationship to each of the support anvils.

Abstract: A pair of haircutting shears wherein first and second shear blades, associated at a pivot point, contain sinusoidally grooved cutting edges comprising a plurality of wave cycles thereon. The grooved cutting edges are separated from the pivot point by air gaps to prevent the lodging of unsevered hair therebetween during a haircut and provide a smooth or blended overall appearance after cutting. The shears are relatively lightweight for ease of use and allow an improved and more efficient resulting haircut.

Abstract: A razor system comprises a handle 10 to which a blade unit 15 can be connected by a releasable coupling, the razor handle being hollow and containing a dispenser in which a plurality of blade units are stored for attachment in turn to the handle when the blade unit, previously fitted in an operative position on the end of the handle, has been discarded. The releasable coupling 13 is a pair of resilient claws 13a engageable by snap action in a pair of recesses in the blade unit for pivotally mounting the blade unit on the handle, the blade units being slidable longitudinally out of the dispenser.

Abstract: A cutter blade device of a mowing machine including a casing, and an inertia shifter has at least one pawl member formed at one of the inertia shifter and casing, and at least one receiving portion formed at the other of the inertia shifter and casing. The pawl member is engageable with the receiving portion to restrict a rearward movement of the inertia shifter with respect to the rotary casing.

Abstract: A nutcracker (10) is disclosed which is characterized by an automatic adjustment to differing-sized nuts during the cracking motion. Nutcracker (10) includes a base (11), an upright support (12) carried by base (11) and a slide bar (16) mounted for limited sliding movement on upright support (12). A nut-cracking head (40) is pivotally mounted for sliding movement on slide bar (16) and a handle (30) is carried by base (11) to move the slide bar (16) back and forth along its direction of travel. A rack (22) is mounted on the slide bar (16) and a tooth (46) is carried by head (40) and positioned to pivot towards and engage rack (22) at a point thereon dependent on the size of the nut as the handle moves head (40) into engagement with the nut to arrest the free movement of the head and cause the head (40) to move in unison with handle (30) as handle (30) continues to move into nut-cracking position.

Abstract: A heavy duty scraper tool comprises:(a) two steel plates extending in parallel relation to clamp a steel scraper blade therebetween, so that the blade projects forwardly from between the plates to present a forward scraping edge,(b) adjustable fasteners extending between the plates to clamp them toward and against said blade and so that the fasteners can be loosened to permit blade removal and replacement,(c) a connection integral with one plate and forming a pipe thread,(d) an elongated metal pipe having a thread at one end thereof and threadably joined to said connection to extend rearwardly relative to said plates,(e) and a handle carried by the pipe, remotely rearwardly from the plates.

Abstract: There is provided a device which is principally used for trimming to a predetermined length the leads on electronics components prior to their insertion and connection to a printed circuit board. The device comprises a housing, in which is disposed positioning means and a movable plunger to which is attached a cutter blade. Also in contact therewith are resilient urging means to maintain close contact for effective shear cutting between the cutter blade and a die removably, but in fixed position, attached to the housing. The die incorporates holes or perforations into which the component leads are inserted for trimming, a plurality of holes normally being utilized in positions that correspond to the position of such leads on said component. The die is also a predetermined thickness, which thickness establishes the lengths to which the leads are trimmed in accordance with the specifications and thickness of the PC board to which the component will subsequently be soldered.

Abstract: A holder of improved construction for mounting a saber saw blade on a drive means for reciprocation. The holder includes means defining a slot for receiving the blade, and means coupled with the support means for retaining the blade in the slot and for preventing movement of the blade relative to the support when the support and blade are reciprocating under the influence of the drive means. The holding means in several embodiments includes cam members which are received in notches in respective blades. Other embodiments relate to the formation of blade-receiving slots by moving wall means into proximity with recesses in side faces of elongated members.

Abstract: A shaving unit for a dry-shaving apparatus comprises an external first cutting member with an annular wall portion formed with hair-entry apertures, and a second internal cutting member which is cooperable with the first cutting member and which comprises a ring of cutters which second cutting member can be driven relative to the first cutting member with an oscillatory rotational movement. The first and second cutting members are interconnected by at least two resilient elements, each of which extends substantially radially of the rotational axis of the second cutting member and has an end connected to the first cutting member and an end connected to the second cutting member. The elastic properties of the resilient elements are such as to permit the oscillatory rotational movement of the second cutting member, but the resilient elements are rigid in directions extending substantially parallel to and radially of the rotational axis of the second cutting member.

Abstract: A multi-spindle unit for holding and rotating a plurality of rotary cutting tools has a unit body fixed to a first spindle of a machine tool, a rotatable shaft concentric with the unit body, and a plurality of secondary spindles each having a tool mounting portion at one end thereof. The rotatable shaft is coupled at one end portion to the unit body for receiving a torque from the holder body, the rotatable shaft being displaceable relative to the holder body. A rotation transmitting mechanism is provided to transmit a rotary motion of the rotatable shaft to the secondary spindles. A positioning member is fixedly disposed radially outwardly of the first spindle, and a cylindrical casing is disposed radially outwardly of the rotatable shaft such that the casing and the shaft are rotatable relative to each other. The casing is engageable with the positioning member for positioning thereof by the positioning member, and thereby positioning the secondary spindles.