Abstract: A dual function adjustable hand tool including a head device having a hollow and a room. The hollow is coupled to the room and threaded on one side to screw with a pull-over member. The room further includes a leverage system. An adjusting device is placed between the lead device and the lower handle, and has at least one wheel that includes a hole, with a connecting shaft passing through it and a hole with a connecting rod passing through it. One side of the connecting rod couples to the second side of the leverage and the other side of the connecting rod screws to a sleeve which is coupled to the upper handle by a pin. The device further includes, a concavity and a wave spring; a setting device having a connecting nut, a setting rod and a setting nut wherein the connecting nut is screwed with the setting rod; and an assembly device including a connecting sleeve and a connecting device.

Abstract: A draw vice includes a body having two handles, a center tube mounted in the body and driven to rotate a workpiece, a center tube rotating device pivoted to the body and controlled to rotate the center tube, and a center tube locking device adapted to lock the center tube against rotary motion, wherein the center tube rotating device includes a shell pivoted to the handles, an input gear, an output gear coupled to the center tube, a knob coupled to the input gear and adapted to rotate the center tube, and at least one transmission gear means coupled between the input gear and the output gear for enabling the center tube and the output gear to be rotated at a speed of rotation higher than the input gear.

Abstract: A riveting pliers, which includes a casing having a rear end terminating in a hand grip, a sleeve mounted in the casing, a handle pivoted to the casing, a pressure bar pivoted to the casing, and links coupled between the pressure bar and the handle for enabling the pressure bar to be turned by the handle to lift the sleeve in the casing in achieving a riveting operation, wherein the pressure bar has a middle part pivoted to the inside of the casing by a pivot, a forked front end clamped on two recessed portions at the periphery of the sleeve at two opposite sides, a forked rear end mounted with a transverse pivot and a roller on the transverse pivot; the handle has a downward sloping flange stopped at the roller at the pressure bar for imparting a pressure to the pressure bar to lift the sleeve upon each operation of the handle.

Abstract: An elbow joint assembly including two elbow joints mounted on two opposite ends of a shaft around a screw rod, each elbow joint including a fixed elbow having a barrel raised from the periphery and fixed to a locating rod of a mechanism, two movable elbows turned about the shaft and having a respective barrel raised from the periphery and holding a respective rod, two constraint blocks mounted on the shaft and forced to hold down the movable elbows and the fixed elbow in between the movable elbows, two spring elements mounted around the shaft between the movable elbows and the constraint blocks to force them apart; and two levers respectively pivoted to the shaft and turned between a first position in which the constraint blocks are forced into engagement with the movable elbows, causing the movable elbows and the fixed elbow to be firmly retained in position, and a second position in which the constraint blocks are released from the movable elbows, for permitting the movable elbows to be respectively turned

Abstract: A headrest including two vertical rods, an upper horizontal rod, a lower horizontal rod, a pair of vertical supporting means arranged between the upper and lower horizontal rods and including a positioning rod and a guiding rod, a first pair of sliders slidably mounted on the upper horizontal rod, a second pair of sliders slidably mounted on the lower horizontal rod, a first pair of cylindrical members fitted in the first pair of sliders, a second pair of cylindrical members fitted in the second pair of sliders, a pair of panels slidably mounted the guiding rod, and a pair of cylinders fitted in the panels, whereby the headrest can be conveniently adjusted as desired.

Abstract: An adjustable coupling including an axle, a fixed toggle mounted around the axle to hold a first frame rod, two movable toggles turned about the axle to hold a second frame rod and a third frame rod respectively, two locating plates mounted around the axle and prohibited from rotary motion relative to the axle and coupled with the movable toggles through a respective toothed joint, two cam holders fixed to the axle at two opposite ends, and two mushroom cam mounted around the axle and engaged with the cam holders, when the mushroom cams are fully received into the cam holders, the movable toggles can be disengaged from the locating plates and turned relative to the axle to adjust the angular positions of the second and third frame rods relative to the axle.

Abstract: A hand portable riveter includes a handle pivoted to a casing to move a pull shaft through a transmission mechanism, causing it to set a rivet or rivnut via a riveter tip assembly, wherein the transmission mechanism consists of a pressure bar pivoted about a pivot in the middle and having a front fork stopped around a neck portion on the pull shaft and a rear fork, and a roller mounted on the rear fork by a pin; turning the handle in one direction causes the pressure bar to press the pull shaft downwards; turning the handle in the reversed direction causes the roller turned along the casing to give a pressure to the pressure bar in lifting the pull shaft.

Abstract: This invention relates to a multi-purpose carriage and in particular to one including an upper frame provided with two upper supports each having a toothed member at the lower end, two transverse rods mounted between the two upper supports, each of the upper supports having a fixing block, a slider and a guiding rack and being provided with a telescopic rod, each slider having a positioning device for mounting on the guiding rack, a head rest rod pivotally connected with the upper end of the upper supports and having an adjustable rest, a lower frame provided with two lower supports each having at the upper end a toothed member engaged with the toothed member of the upper frame, and a compound rack engaged with the lower supports of the lower frame and composed of two telescopic rods each connected with a L-shaped rod, the L-shaped rod being provided with a plurality of wheel assemblies, whereby the carriage may be used as a seat, a wheeled chair, a bed, and a baby carriage.

Abstract: A folding heavyweight riveter includes a base frame assembly, a pull shaft driven to move axially relative to the base frame assembly in moving riveting elements to set rivets or rivnuts, two rollers mounted on the pull shaft at two opposite sides by two clamping plates, two folding handles bilaterally pivoted to the base frame assembly, two links linked between the handles and the clamping plates, wherein each handle is comprised of a front handle frame, an intermediate handle frame pivoted to the front handle frame, and a grip connected to the intermediate handle frame, and a lock device to lock the front and intermediate handle frames in the operative position.

Abstract: A dual-usage riveter including two handles pivoted to a base member is provided. A pull shaft linked between the handles is axially displaced thereby. An outer sleeve is fastened to the front end of the base member to hold an inner sleeve. Two symmetrical clamping plates, a stop member, a spring, and a plug are respectively inserted into the inner sleeve and moved by the pull shaft to set rivets. A connecting shaft may be alternatively inserted in the base member and connected to the pull shaft to drive a pull rod for setting rivnuts.

Abstract: The present invention relates to a multi-functional riveter, whose basic structural components include a body and a body head having a hollow upper portion with an extended hand grip. Located within the interior of the body head is a lever hinged thereto. The one end of the lever is connected to a transmission shaft which, in turn, is attached to a press handle extended and exposed to the outside of the body. The other end of the lever is coupled with a sleeve. The basic structures mentioned above are all indispensable parts of a riveter layout. The functional enhancement and improvement embodied in the present invention are based on specific mechanical arrangements designed to allow a rivet-pulling apparatus, a nut-pulling apparatus, and an anchor rivet apparatus to be integrally disposed within a riveter through its sleeve, resulting in a convenient and multi-functional riveter with the characteristics of a structural simplicity, among other things.