Abstract: A clamp for sharpening chain saws does not require removal of the saw chain from the saw prior to the sharpening operation. The clamp comprises a supportive backing plate, a threaded member for fixing the saw blade into position relative to the plate, and a stop for preventing movement of the saw chain teeth along the saw blade during the sharpening operation. Preferably, the stop comprises a pivotable arm which is engageable with any one of the saw teeth.

Abstract: A one hand clamping device which is flexible and reversible in operation, comprises a hand held main unit having mounted thereon a C-shaped clamping structure which is also changeable in relative position with the main unit, an actuating grip together with quandrant segment gear actuated thereby, rack bar driven from the gear action driven from the quandrant segment gear and integral with a slidable receptacle for supporting one-way drive structure for an actuating drive gear for in turn an elongated clamping screw which is mounted so as to be movable in and out of the hand held unit. The elongated clamping screw is provided with a slot therein for reception of a guide plate also mounted in the main unit to prevent rotation of the screw but to permit longitudinal movement thereof in and out of the main unit.

Abstract: A clamp for use in holding a wing panel stringer to a header on a wing panel jig includes a clamp base affixed to the header. A stringer locator, which has a pair of clamp-engaging surfaces, is mounted for rotational movement on the clamp base. The first clamp-engaging surface is oriented generally parallel to the rotational axis of the locator while the second surface is a locus of lines that are preferably generally perpendicular to the first surface and form a convexly arcuate second surface. A J-shaped clamping member is slidably and rotationally mounted in the clamp base. The terminus of the curved portion of the clamping member engages the exposed surface of a stringer to hold it tightly against the first and second clamp surfaces.

Abstract: A valve spring compressor tool having a quick-change arrangement for replacement of jaws thereon. The compressor tool is a generally c-shaped structure having lower legs adapted to receive a set of jaws for engaging an automotive rocker spring or the like. The jaws comprise inwardly facing channel sections adapted to slide over the free ends of the frame legs and to be secured in place by releasable clamp members, secured by attachment screws. The jaws include a threaded spacer screw for changing the spacing to a accommodate various sizes of washers, valve seats, springs and the like.

Abstract: A vise-like C-clamp with adjusting screw and wherein two elongated square bars are fixedly attached to one jaw thereof and the clamping end of the adjusting screw whereby a pair of gripping heads may be selected from a group of variously shaped heads and oppositely and interchangeably arranged on each of the bars. The clamp may be hand held or adjustably mounted in a supporting base for gripping and positioning variously shaped work pieces in horizontal, vertical, and angularly held positions while work is performed thereon.

Abstract: A device for guiding a belt during mounting on a pulley. A body of the device has a slot for receiving an edge portion of the pulley and a face portion adjacent the slot and substantially parallel with the slot for receiving and supporting the belt. The device is attached to the pulley and holds the belt as the pulley is turned and guides the belt into the pulley.

Abstract: A horizontal locator for a rail alignment device engages the sides of the rail head only at points vertically remote from the running surface of the rail whereby deformation of the rail head adjacent the running surface does not adversely affect the accuracy of the locator. A reference surface on the horizontal locator is adapted to engage the running surface of the rail to properly dispose the side-contact members with respect to the rail head.

Abstract: A pivotable dolly for securedly holding a heavy rectangular member, such as a door, by one edge to permit the transportation, preparation and final attachment of the member in its intented position. The dolly includes an elongated member, clamps fixed to the elongated member to releasably hold the rectangular member by its edge, handles for supporting the dolly when the elongated member is positioned horizontally, and a pair of wheels for permitting the rolling and pivoting of the dolly. When the dolly is pivoted to a horizontal position, the rectangular member being held can be vertically adjusted to properly align the rectangular member for attachment.

Abstract: A chela-form clamp in which clamping action is effected by the thrust of an elongate member on a thrust block journaled in one leg of the clamp characterized by conical surfaces between the thrust block and the thrust end of the elongate member and a steel ball between them having circle contact with the conical surfaces.

Abstract: A quick release clamp which comprises a U-shaped frame formed by two stampings spaced apart and held together in a unitary structure by means of spacers and rivets. In one arm of the frame, a screw block is anchored in which an elongated screw member is threaded and has on its inner end a clamping face. In the opposite arm a similar elongated threaded member is threaded through a block and has on its end a clamping face which is apposed to the first clamping face. In this latter case the block into which the elongated screw member is threaded is pivoted in the frame so that the clamping face can be swung away from alignment with the other clamping face.

Abstract: A boiler tube crimping tool and method of use for breaking the seal between a boiler tube and tube sheet to facilitate the pulling of the boiler tube from the tube sheet. The preferred method includes cutting the boiler tube, then crimping the remaining tube stub, followed by pushing the tube stub from the tube sheet.

Abstract: A clamping apparatus is actuated to clamping position by a reciprocating elongated member having a clutch mechanism which either permits or does not permit reciprocation of the elongate member according to the rotative position of the elongate member in the clutch and a screw means for advancing the clamping face when the unit formed by the clutch in engagement with the elongate member is rotated. The clutch is designed so that it does not disengage until after a workpiece is unclamped.

Abstract: A clamp useful for firmly securing a camper housing within the bed of a pickup truck which allows for efficient attachment or removal of the camper housing. The device includes a U-shaped clamp body having a pivotal connector at one end that is affixed to the camper housing and a reciprocally movable, spring biased arm having a roller at its free end such that the roller engages the lip of the pickup truck bed to permit pivotal movement over center to effect spring locking action of the clamp. The device allows a camper housing to be readily installed or removed from a vehicle bed by manual actuation of the holding clamps.

Abstract: A clamp of the type wherein an arm slides along a post, the sliding arm having a clamping jaw guided for vertical movement on its free end and a clamping screw threadably engaging with the free end and operable to effect vertical clamping movement with the clamping jaw.

Abstract: A clamp is disclosed comprising a frame having two rigid supports spaced mutually apart along an axis and a screw threadedly mounted to one of the supports for axial movement along the axis. A first pressure contact member is pivotably mounted to an end of the screw between the two frame supports. A yoke is pivotably mounted to the other of the two supports for rotary movement about the axis with two yoke arms straddling the axis. A second pressure contact member is mounted to each of the two yoke arms for rotary movement between the two frame supports aside the frame axis.

Abstract: A vise for making field repairs on chain saws and chain saw parts is disclosed. The vise has two fixed jaws. Between them is a movable jaw. Additional clamping members in the form of wing bolts are threaded through one of the jaws. The vise also has an anvil upon which various repairs or operations such as hammering may be carried out. Protruding from the bottom side of the anvil is a mounting spike. The vise may be mounted horizontally on a stump or vertically on a tree trunk merely by driving the spike in with hammer blows on the anvil. Thus mounted the vise can be pivoted 360.degree. to facilitate positioning of the workpiece.

Abstract: An improved connector for attaching a swivel pad to a supporting bolt of a clamp for maintenance, replacement or lubrication and which permits pivoting of the swivel pad over a wide angle. The connector has particular utility in combination with a screw clamp and comprises a shoe assembly having a work-engaging pad with a socket for receiving a truncated spherical head of a screw bolt and means for restraining the said truncated head in the socket.

Abstract: Improved tool for easy removal and reassembly of selective links of a sprocket chain wherein a specially designed vise tightly clamps one or more links of the chain therein. A uniquely shaped impact punch is positioned to properly hold a selected link adjacent the vise, then transmits sharp impacts to the link to more quickly and easily dislodge the selected link from the remainder of the chain. The vise includes a stationary jaw or bucking block and a relatively movable jaw with the opposed faces thereof having inwardly protruding side edges to provide a recess or clearance in the mid-section of the jaws for receiving the outwardly bowed edges of the chain link held therein, whereby a better gripping relationship may be obtained. Further, the movable jaw is caused to tilt inwardly toward the bucking block at the top upon application of clamping pressure, whereby the clamp link(s) resist inadvertent dislodgement.

Abstract: A C-clamp has a bearing pad formed on a plug having a body portion removably received within a bore in one extremity of the clamp frame. The bore is coaxial with the clamping rod movably mounted in the opposite extremity of the frame. The bore is intersected by a slot receiving a cable connector, with the usual hole in the connector normally traversed by the plug, and in firm electrical contact therewith.The clamp is also preferably provided with a tubular member having the exterior thereof in threaded engagement with the opposite frame extremity. The clamping shaft is slidably received in the tubular member, and a one-way rotative interlock is provided between the shaft and the tubular member in the direction to induce movement of the tubular member toward the pad in the thread system. A brake is incorporated for restraining the rotation between the tubular member and the frame.

Abstract: A C-frame composed of a base section having a first jaw extending from one end thereof and a second jaw extending from the opposite end thereof to define a jaw opening. The free end of the first jaw is provided with a first clamp pad affixed thereto facing the jaw opening. An elongate pressure screw is threadedly mounted in the free end of the second jaw and is movable upon threaded rotation relative the second jaw towards and away from the first clamp pad. A polygonal head member having two parallel sides is formed at one end of the pressure screw. An elongate extruded handle having a channel-shaped cross section slidably receives the head member, the parallel sides of the head member being in sliding surface engagement with the inner walls of the handle member. The handle ends are formed to retain the handle on the head member. A swivel ball is formed at the opposite end of the pressure screw.

Abstract: A screw clamp having a clamp body provided with a pair of leg portions defining a slot therebetween, a jaw comprising a screw rod disposed on one of said leg portions and adapted to be advanced into or retreated from the slot, and a swivel jaw oppositely disposed on the other leg portion and adopted to be swiveled wherein either one of said jaws are resiliently mounted on the associated leg portion by means of a spring for providing friction between the thread surfaces of the screw rod and its mating threaded hole to thereby prevent the screw rod from being loosened under the influence of unintentional external force such as vibration.

Abstract: A clamp for holding a work piece in position in an anodizing bath which is constructed at least partially of material resistant to liquid contained in the anodizing bath.The clamp is made completely of a synthetic plastic material which is resistant to liquid contained in the anodizing bath. The clamp comprises a U-shaped frame with a manually operable screw threadedly attached to a first leg of the frame. Titanium contact tips are provided, respectively, on the second leg and on the end of the screw.

Abstract: There is provided a clamp which is well suited for use as a lifting clamp for lifting and moving materials of assembly in a shipyard, etc. and as a pulling jig in welding and other operations. The clamp comprises a clamp body including a shackle for engagement with a pulling device and a slot for receiving an article, and a pair of jaws provided on the leg portions of the clamp body on the opposite sides of the slot to grip the article in the slot, one of said jaws consisting of a screw rod and the other jaw consisting of a swivel jaw with a spherical surface, whereby when the article clamped in the slot by the pair of jaws tends to slide in any direction with respect to the clamp body, the article is more positively gripped by the pair of jaws.