Abstract: An ice-skate sharpener comprising a stationary electric motor grinder including a diamond bit carried by an arm pivoted on a support adjacent the grinding wheel and serving to dress the peripheral face of the grinding wheel to the desired transverse curvature, so that an ice-skate blade can be sharpened with the desired hollow ground. The sharpener further includes a pair of self-centering jaws to clamp the blade of an ice-skate therebetween and pivotally connected to the cuter end of articulated arms, themselves pivotally mounted on a support secured to the work bench of the sharpening assembly. The level of these arms can be adjusted to ring ice-skate blade carried by the jaws in exact alignment with the pivot of the arm supporting the diamond bit, so as to produce a hollow ground, which is exactly centered with respect to the side faces of the ice hockey blade. The jaws are self-centering so that the centered hollow ground is obtained independently of the thickness of the ice hockey blade.

Abstract: A work part resting on a work support is clamped to the work support by means of a self-aligning work holding clamp having a pair of clamp members which are pivotally mounted and operated by actuating means acting between the members in such a way that the members automatically align themselves with the work part during closure of their jaws against the part to effect clamping of the part to the support without exerting on the part a force tending to move the part relative to the support in the direction of jaw movement. The clamp jaws may be spring biased to open position and to a predetermined position relative to the support.

Abstract: A spring clamp for holding a paper log (rolled up newspapers) while twisting tie wires around the end portions thereof. The clamp comprises a pair of spring-actuated curved jaws which have a laterally flexible cord across the free ends of the jaws to embrace the log, the cord extending through jaw openings and being connected to the ends of springs projecting laterally from the jaws. The springs are arranged to buckle when the jaws are separated to provide a large range of opening movement of the jaws by a substantially constant jaw opening force and a substantially constant tension on the cord.

Abstract: A spring box assembly for use in clamping mechanisms of the over-center type comprises two nested metal housings, at least one spring located between such housings, and means for resiliently holding said housings together with a predetermined initial tension applied to the spring. In a preferred embodiment, at least one metal pin is secured at one end to the bottom of the inside housing and slip fitted in holes in the outside housing at its other end, a helical spring is located around such pin and means are mounted on the other end of such pin for holding the two nested housings together with a predetermined initial tension applied to such spring.

Abstract: Improved clamping or gripping means particularly for gripping an elongated formed member.

Abstract: A gripper device comprises a gripper carrier which reciprocates towards and away from an upsetting station in a multi-stage upsetting press and at least one gripper for carrying workpieces. Each gripper comprises a pair of guide elements on the carrier and a pair of gripper arms each pivotally connected to a respective one of the guide elements to be driven thereby. The gripper arms are pivoted to one another at a point which is triangularly spaced from the points at which the arms are pivoted to the guide elements. The guide elements are arranged so that as the arms open to deposit a workpiece, they are moved bodily upwards in order to clear the upsetting station, the upward motion being at a minimum as the arms start to open and increasing steadily as the motion proceeds.

Abstract: A mechanism employed for cutting and stripping a plurality of wires simultaneously by means of a single lever which is moved in a first direction to cut the plurality of wires and in a second direction to strip a length of insulation from the cut wires. The mechanism includes a base support and a carriage pivotally mounted thereto. The carriage supports the wire knife and anvil, the stripper knives, a cam arrangement for actuating the wire knife and stripper knives and the control lever. An automatic lock is provided which prevents the carriage from pivotting to strip the wires when the cutting operation is being performed and also prevents return of the wire knife and stripper knife when the stripping operation is being carried out. The mechanism is employed in this embodiment with wire positioning and clamping means. An assembly is used to stress the clamping means to insure the retention of the wires held therein.

Abstract: A packaging machine which includes article buckets and leaflet clamps mounted on the buckets, each clamp having a spring loaded jaw which, in the open position, allows a leaflet to be inserted between the jaw and bottom plate of its respective article bucket, and, in the closed position, is effective to clamp a leaflet between the jaw and bottom plate to deflect a portion of it into the exit end opening of the bucket. Means are provided for opening the clamp jaw, inserting a leaflet between the open clamp jaw and bottom plate, closing the clamp jaw to clamp the leaflet and opening the clamp jaw to allow the leaflet to be carried into a carton by the article as it is transferred from the article bucket to the carton.

Abstract: Apparatus for clamping a workpiece, such as the end portion of a conveyor belt, includes a link member having an upper end portion and a lower end portion with a receiving member secured intermediate the end portions for horizontally supporting the workpiece. A bent lever having a first end portion angularly disposed relative to a second end portion is pivotally connected at a fulcrum point to the link member upper end portion. An arcuate blade member having a clamping surface is secured to and projects outwardly from the lever arm first end portion above the receiving member. An actuator is pivotally connected at one end portion to the lever second end portion and at the opposite end to the lower end portion of the link member. The application of a selected force to the actuator in a direction away from the link member pivots the lever about the fulcrum point on the link member downwardly and urges the blade clamping surface into frictional engagement with the workpiece.