A hacksaw may include a blade support frame, a handle operably coupled to the blade support frame at a first end of the blade support frame, a movable blade engagement assembly and a multi-function fixed blade engagement assembly. The multi-function fixed blade engagement assembly may be disposed at a second end of the blade support frame. The multi-function fixed blade engagement assembly may include a first clamping structure to affix a first end of a blade to the hacksaw via an engagement pin and a second clamping structure to affix a portion of the blade spaced apart from the first end to the hacksaw via a clamping or pinching force exerted on the portion of the blade. The movable blade engagement assembly may be operably coupled to the handle and to a second end of the blade. Tension on the blade may be adjustable by adjustment of the movable blade engagement assembly.

A scroll saw has a machine base. The machine base includes two parallel transmission shafts thereon. The two transmission shafts are connected to each other through a synchronous unit. The synchronous unit has an upper crankshaft and a lower crankshaft connected to the transmission shafts, respectively. A plurality of crankshaft connecting levers are connected between the upper crankshaft and the lower crankshaft. When one of the transmission shafts is rotated, another transmission shaft will be driven to rotate through the synchronous unit. Because the synchronous unit is composed of the crankshaft connecting levers, the connection between the transmission shafts is relatively tight. This ensures that the transmission shafts do not generate a deviation in rotation to avoid vibration and noise.

A stone cutting device configured to cut a workpiece with a plurality of cutting tools by swinging the cutting tools within a predetermined angle range. Each of the cutting tools includes: a blade extending in a length direction of the workpiece; and at least one cutting tip disposed on an end of the blade and protruding from the blade in a width direction of the blade so as to cut the workpiece while being reciprocated in a swinging motion. The stone cutting device includes a frame unit configured to combine and reciprocate the cutting tools and individually adjust tension in each of the cutting tools. The frame unit includes an actuator applying tension to the cutting tools so as to apply a load of 8 tons to 27 tons to each of the cutting tools.

A portioning device for cutting or leveling a food product includes a blade configured to cut the food product, a first leg section and a second leg section configured to support the portioning device on a surface, and a handle section configured to be manipulated by a user. Each of the first and second leg sections include a leg, a blade holder configured to connect with the blade, and a leg lock operatively mounted to the leg and configured to selectively lock the leg in a position at a selected height of the leg to adjust a distance between the blade and the surface. The blade is a wire. The handle section is foldable about the central portion thereof to place the device in a collapsed configuration.

A portioning device for cutting or leveling a food product includes a blade configured to cut the food product, a first leg section and a second leg section configured to support the portioning device on a surface, and a handle section configured to be manipulated by a user. Each of the first and second leg sections include a leg, a blade holder configured to connect with the blade, and a leg lock operatively mounted to the leg and configured to selectively lock the leg in a position at a selected height of the leg to adjust a distance between the blade and the surface. The blade is a wire. The handle section is foldable about the central portion thereof to place the device in a collapsed configuration.

A portioning device is provided for use in cutting or leveling a food product. The portioning device comprises a handle section that is configured to be manipulated by a user, a leg section and a blade. The handle section includes an arm configured to receive a leg, a sleeve configured to slide over a portion of the arm, and an arm connector pivotally coupled to the arm. The leg section is configured to support the portioning device on a surface. The leg section includes a blade holder configured to hold an end of a blade portion, and a leg lock configured to adjustably lock the leg in a position. The blade is configured to cut an object.

A portioning device is provided for use in cutting or leveling a food product. The portioning device comprises a handle section that is configured to be manipulated by a user, a leg section and a blade. The handle section includes an arm configured to receive a leg, a sleeve configured to slide over a portion of the arm, and an arm connector pivotally coupled to the arm. The leg section is configured to support the portioning device on a surface. The leg section includes a blade holder configured to hold an end of a blade portion, and a leg lock configured to adjustably lock the leg in a position. The blade is configured to cut an object.

A foldable bow saw movable between a functional saw condition and a folded packable condition includes a handle arm, a top bar, a short arm, a saw blade, and a lever arm, all pivotally connected one to the other with an end of the handle arm and an end of the lever arm forming free, unconnected ends of the assembly. The free end of the handle arm includes a connecting fulcrum surface adapted to removably mate with a fulcrum surface receiver in the lever arm. Rotation of the lever arm in a locking direction about the fulcrum surface moves the pivotal connection of the lever arm to the saw blade to a tensioned functional saw condition. Rotation of the lever arm in an unlocking direction allows the fulcrum surface to be removed from the fulcrum surface receiver and the assembly to be folded to the packable condition.

The present invention relates to an electric saw 1 including: a body 100; a base 200 fixing a frame 410 of an elevating motion converting part 400 thereto; a forward and reverse rotation driving part 300 adapted to drive forward and reverse rotation of a DC motor 320; the elevating motion converting unit 400 adapted to move up and down an elevator 440 insertedly coupled movable up and down to left and right guides 412 and 412 of the frame 410; and a saw part 500 having a C-shaped saw frame 510 having a fixing frame 510-1 adapted to fix one end of an upper frame 510-2 to the upper end thereof and to fix one end of a lower frame 510-3 to the lower end thereof and a plurality of elevator coupling holes 510-11 formed on the intermediate area thereof, the upper frame 510-2 adapted to fix the upper end of a saw blade 520 to the other end thereof, and the lower frame 510-3 adapted to fix the lower end of the saw blade 520 to the other end thereof, and the saw blade 520 fixed on both ends thereof to the other end of the upper frame 510-2 and to the other end of the lower frame 510-3.

The present invention relates to an electric saw 1 including: a body 100; a base 200 fixing a frame 410 of an elevating motion converting part 400 thereto; a forward and reverse rotation driving part 300 adapted to drive forward and reverse rotation of a DC motor 320; the elevating motion converting unit 400 adapted to move up and down an elevator 440 insertedly coupled movable up and down to left and right guides 412 and 412 of the frame 410; and a saw part 500 having a C-shaped saw frame 510 having a fixing frame 510-1 adapted to fix one end of an upper frame 510-2 to the upper end thereof and to fix one end of a lower frame 510-3 to the lower end thereof and a plurality of elevator coupling holes 510-11 formed on the intermediate area thereof, the upper frame 510-2 adapted to fix the upper end of a saw blade 520 to the other end thereof, and the lower frame 510-3 adapted to fix the lower end of the saw blade 520 to the other end thereof, and the saw blade 520 fixed on both ends thereof to the other end of the upper frame 510-2 and to the other end of the lower frame 510-3.