42results about "Hack saws" patented technology

A saw bow for a handsaw includes a saw bow body, a movable member movably mounted in a bottom of a handle of the saw bow body and movable relative to the handle along a longitudinal direction of the saw bow body, a bottom cover having a first pivotal portion pivotally connected with the handle of the saw bow body and a second pivotal portion, and a length-adjustable member having two ends respectively pivotally connected with a pivotal end of the movable member and the second pivotal portion of the bottom cover. As a result, the saw bow of the present invention can provide a congruous appearance and occupy less storage space.

A bow saw structure including a handle, an adjustment unit and a fast installation/detachment unit. The handle has a grip section for a user's hand to extend through and hold. An upper side of the grip section is formed with a tunnel in which an L-shaped support member can be inserted. A first tightening member is disposed in the tunnel. The adjustment unit is mounted on upper side of the grip section for controlling the depth of the tunnel, whereby different lengths of saw blades are installable on the bow saw. The fast installation/detachment unit is pivotally disposed on lower side of the handle. A second tightening member is arranged in the fast installation/detachment unit. The second tightening member and the handle are arranged on the same side of the bow saw. One end of the tightening member protrudes from the handle.

A collapsible saw (10) comprising a blade (20) and a frame construction (30) formed of parts (31, 32, 33), whereto the blade (20) is attachable and which frame construction (30) can be transformed to a smaller form for e.g. transportation purposes and to at least partly cover the blade (20) when the saw (10) is not used. The parts (31, 32, 33, 34) of the frame construction (30) of the saw (10) are attached to each other and the blade (20) by means of fixing members (21, 22, 23, 24, 35), at least one of which is a fulcrum pin (21, 22, 23, 24), a bolt or corresponding allowing a turning motion between the parts, and/or that the saw (10) is collapsible and can again be turned into the sawing condition without detaching the fixing members.

Provided is a hacksaw comprising a front cavity in a tang of the frame, a resilient member having one end fastened in one side of the cavity, a handle for receiving the tang and a top opening aligned with the cavity, a pivotal lock lever disposed in the opening and comprising an arm and an end urging member (e.g., cam), a blade inserted through the cavity and the tang into the handle. A thin portion of the urging member is disposed proximate the resilient member and the resilient member is disengaged from the blade when the arm is disposed in a forward position. To the contrary, a thick portion of the urging member is pressed down on the resilient member for fastening a back of the blade when the arm is disposed in a rearward position.

A hacksaw multitool is provided. The device includes an elongated body having a first end opposite a second end. A bit receptacle is disposed within the first end. A plurality of interchangeable bits is removably securable within the bit receptacle. A channel is disposed within an upper side of the elongated body, wherein an arm is pivotally affixed within the channel at a proximal end of the arm. A saw blade is pivotally affixed to a distal end of the arm, wherein the saw blade is slidably engaged with the channel. The saw blade is selectively movable between a deployed position and a stowed position via actuation of the arm. The saw blade is disposed perpendicular to a longitudinal axis of the elongated body when in the deployed position and the saw blade is disposed entirely within the channel when in the stowed position.

A handsaw for holding a saw blade for cutting is disclosed to include a handle having an cantilever bar, an extension bar pivoted to the cantilever bar and turnable relative to the handle between a received position and an extended position, a blade-retaining arm pivoted to one end of the extension bar remote from the handle and turnable about the axis of the extension bar, and two blade retaining members respectively provided at the handle and the blade-retaining arm for the mounting of a saw blade when the extension bar is turned to the extended position.

A lightweight, thin metal connector plate with one or more through holes or cutouts, containing multiple sharp edges. The sharp edges, within the through hole or cutout, upset and engage the outer layers of a stick or sticks, or similarly essentially cylindrical and irregular members, when inserted into the connector plate and a force subsequently applied, by rotating or moving the stick or sticks off axis from the plate, to fasten the stick or sticks in place. The sheet metal construction provides for a wide rage of additional connection options, by means of easily incorporated features in the connector plate, when used in conjunction with common flexible connectors and solid fasteners. Using the connector plate, tools and structures can be quickly fabricated and then disassembled, from locally harvested woods or canes. The connector plate, being lightweight, compact and made from metal, is well suited to survival preparedness and outdoor activities.

The invention relates to the field of tool equipment, in particular to a novel cleaning hand saw. The novel cleaning hand saw is implemented by the following technical scheme: the novel cleaning hand saw comprises a saw frame, a saw blade mounted on the saw frame and a grab handle connected with the saw frame, and further comprises a cleaning device, wherein the cleaning device comprises an articulated pipe connected with the saw frame and a mainboard connected with the articulated pipe and can turn over relative to the saw frame; a wind power device is arranged on the mainboard; the grab handle comprises a reinforcing sleeve for a user to hold; and the reinforcing sleeve sequentially comprises a main inner layer made of a hard substance, an elastic layer supported by a soft substance and an adsorption layer arranged outside the elastic layer and made of an absorbent material from the inside out. The invention aims to provide the novel cleaning hand saw, which highly fits a hand of a worker, the hand saw further comprises the cleaning device which can be used for efficiently cleaning the cutting parts and the saw blade, and the inner layer of the grab handle is subjected to special treatment, so that the durability is high, and the degree of human comfort is also high.

The invention discloses a retractable hand saw. The retractable hand saw comprises a supporting mechanism, a hanging mechanism, an adjusting mechanism, a handle mechanism, a steel saw blade and a butterfly nut. The hanging mechanism is rotationally connected to the top end of one side of the supporting mechanism. The handle mechanism is rotationally connected to the end, away from the hanging mechanism, of the supporting mechanism. The adjusting mechanism is rotationally connected to the bottom face of the side, close to the handle mechanism, of the supporting mechanism. The steel saw blade isinteractively clamped between the hanging mechanism and the adjusting mechanism. The butterfly nut is in threaded connection between the adjusting mechanism and the handle mechanism. The supporting mechanism is used for providing storage and support. The hanging mechanism and the adjusting mechanism are used for fixing the steel saw blade. The handle mechanism is used for fixing the adjusting mechanism. The retractable hand saw can be contracted into the structural shape of the supporting mechanism after being used, and is convenient to place and carry, and the steel saw blade cannot damage bags or hurt users.

The invention discloses a multi-saw hand drawing saw which structurally comprises a saw frame, a tension rope, a control board, a combined saw blade and saw blade frames. The saw frame is of an I-shaped structure. The tension rope is arranged at the upper end of the saw frame. The two heads of the upper end of the saw frame are tensioned through the tension rope. The tension rope is a compound rope formed by twisting multiple ropes. The control board is arranged in the middle of the tension rope, is a long-bar-shaped wood block and is inserted in the middles of the ropes of the tension rope. The lower end of the saw frame is provided with the combined saw blade, and the combined saw blade is of a combined structure formed by arranging a plurality of saw blades in parallel. The T-shaped saw blade frames are arranged at the two ends of the combined saw blade, and the two ends of the combined saw blade are arranged on the saw frame in a sleeving manner through the saw blade frames. The multi-saw hand drawing saw has the beneficial effect that the combined saw blade of the saw blades can be used for sawing multiple boards at a time.

The invention provides a bevel machining device for a pipe. The bevel machining device for the pipe comprises a supporting table and supporting frames. A positioning assembly is arranged on the supporting table. An oblique plate is obliquely arranged on the rear side of the positioning assembly and perpendicularly and fixedly connected to the supporting table. A rotating shaft is arranged on the oblique plate. A hand saw is movably arranged on the rotating shaft. The positioning assembly comprises a first rotating plate and a second rotating plate, wherein the first rotating plate and the second rotating plate are rotatably connected to the supporting table in a scissor mode; an upward-concave short arc plate is arranged at the lower end of the first rotating plate, and outer gear teeth are arranged on the outer arc surface of the short arc plate; and a long arc plate which is concentric with the short arc plate is arranged at the lower end of the second rotating plate, and inner gear teeth are arranged on the inner arc surface of the long arc plate. A mounting base is arranged below the positioning assembly. A gear set is rotatably arranged on the mounting base, and the gear set is engaged with the outer gear teeth and the inner gear teeth at the same time. A treading mechanism used for driving a big gear to rotate is arranged on one side of the big gear. The short arc plate and the long arc plate are driven to draw close to each other through the gear set, so that the pipe is clamped; and large clamping force can be obtained only by rotating the two gears by small angles, and thus manpower is saved.