Abstract: A laser-guiding coordination device for a drilling machine has a C-base, two laser-line projectors oppositely and adjustably embedded inside the C-base. Each laser-line projector has a first adjuster, a second adjuster perpendicularly and rotatably mounted inside the first adjuster, and a laser generator accommodated inside the second adjuster to generate laser lines. By rotating the first and second adjusters, two laser-lines projected to a workpiece are moved in parallel or rotation to adjust and to define a precise laser mark without need for physically drawing lines on the workpiece.

Abstract: A display device for a circular saw machine includes a flexible ruler whose two ends are connected to a frame fixed to the blade mechanism I the base of the circular saw machine. Two guide rollers are connected to an underside of the worktable and the flexible ruler reeved through the two guide rollers. A window is defined through the worktable of the machine and the flexible ruler goes beneath the window. The flexible ruler moves relative to the window when the blade mechanism is swung and the tilt angle of the blade mechanism can be observed through the window.

Abstract: A foldable stand for a machine includes a tabletop, a plurality of legs each having one end pivotally mounted to the tabletop such that the legs are turnable relative to the tabletop between an extended position and a received position, a plurality of first locking members each having a body portion movably pivotally mounted to the worktop and a stop portion protruded from the body portion for stopping against the legs so as to lock the legs in the extended position, and a plurality of second locking members respectively mounted in the tabletop for locking the legs in the received position.

Abstract: An angle adjustable pedal assembly for elliptical exercisers includes a pedal frame and a pedal which is pivotably connected to two sides on an end of the pedal frame. Each side wall has a hole with three notches defined in an inside of the hole and the pedal has two connection plates each of which has a reset slot and a set slot which communicates with the reset slot. A pin extends through one of the reset slot and the set slot, and is engaged with one of the three notches in the side walls so that the pedal can be set at different angle relative to the pedal frame by engaging with one of the three notches in the side walls.

Abstract: A process capable of using a fixed repeat rotary cutter for offline finishing of commercial offset web printed products having inconsistencies in repeat length. The process includes transporting a web at a linear speed in a first direction, operating a rotary cutter to singulate the products from the web by forming butt cuts within a waste portion between an adjacent pair of products and transverse to the first direction, causing the products to continue moving in the first direction, causing the products to move in a second direction transverse to the first direction, and then trimming the products to remove the waste portion between adjacent products as the products continue moving in the second direction. Each butt cut is produced with an individual straight knife mounted to a rotating knife cylinder of the rotary cutter, and the rotational speed of the knife cylinder is adjusted so that each butt cut separates pairs of preceding and trailing products as a result of being produced in the waste regions.

Abstract: The invention discloses a structure of cutting guide for table saw. The structure of cutting guide is provided on the worktable of table saw, with an appropriate distance is kept between the cutting guide and saw blade. The structure of cutting guide includes a alignment body, which has an accommodating space provided therein, and a pair of tracks corresponding to each other with front-and-back locations is provided inside the accommodating space for being mounted by an adjusting plate. The adjusting plate can be position-adjusted along the tracks. Besides, a mark is longitudinally provided on the adjusting plate, while a transparent cover is provided at the upper side of alignment body. Therefore, when cutting operation is performed on a workpiece, a referential baseline can be provided, so that the workpiece can be aligned with the saw blade through the referential baseline and ready for cutting.

Abstract: A drill press includes a base, a column, a table, a chuck, a drive member, a transmission unit, a safety guard, and an inspection structure. Thus, an operator can view and inspect the transmission unit mounted in the safety guard through the inspection structure to directly judge the rotation speed of the rotation shaft of the chuck by inspecting the engaging conditions of the belt wheels of the transmission unit without having to remove the safety guard to expose the transmission unit, thereby facilitating the operator manipulating the drill press and replacing the bits.

Abstract: A laser-guiding coordination device for a drilling machine has a C-base, two laser-line projectors oppositely and adjustably embedded inside the C-base. Each laser-line projector has a first adjuster, a second adjuster perpendicularly and rotatably mounted inside the first adjuster, and a laser generator accommodated inside the second adjuster to generate laser lines. By rotating the first and second adjusters, two laser-lines projected to a workpiece are moved in parallel or rotation to adjust and to define a precise laser mark without need for physically drawing lines on the workpiece.

Abstract: A saw blade guard for use in a sawing machine includes a main body having inside a receiving space and an opening communicating with the receiving space, a control panel mounted on the main body, an illuminator mounted on the main body and protruding into the receiving space of the main body, a battery pack mounted in the control panel, and a switchgear mounted on the control panel and electrically connected with the illuminator and the battery pack for controlling the illuminator for illumination.

Abstract: A circular saw machine includes a blade mechanism which includes a circular blade extending through a slot defined through the worktable of the saw machine. A mechanism for tilting the circular blade mechanism includes a wheel located outside of the front wall of the base and drives two matched bevel gears. One of the two bevel gears is engaged with a curve rack of the blade mechanism so that the blade mechanism together with the blade are pivoted an angle.

Abstract: A display device for a circular saw machine includes a flexible ruler whose two ends are connected to a frame fixed to the blade mechanism in the base of the circular saw machine. Two guide rollers are connected to an underside of the worktable and the flexible ruler reeve through the two guide rollers. A window is defined through the worktable of the machine and the flexible goes beneath the window. The flexible ruler moves relative to the window when the blade mechanism is swung and the tilt angle of the blade mechanism can be observed through the window.

Abstract: An apparatus for controlling a variable speed motor of a combined belt and disk sander includes a drive circuit, an inverter circuit, a current detection device, a transducer and a control circuit. The drive circuit produces variable frequency square pulses. The inverter circuit utilizes the square pulses to produce a variable frequency voltage to drive the motor at variable speeds. The current detection device detects any current changes in the motor and returns a feedback current to the control circuit. The transducer provides a variable resistance connected to the control circuit so a person can set a desired speed of the motor by adjusting the transducer. The control circuit controls the frequency of the square pulses sent by the drive circuit to control the variable speed of the motor.

Abstract: A pneumatic nail gun has a body, a nail magazine, an actuating device, a trigger assembly and a push bar assembly. The body has a housing, a handle and a nail firing device. The actuating device is mounted between the housing and the handle. The actuating device has a channel, a piston rod, an O-ring and a first spring to provide a restitute force to the piston rod. The trigger assembly is attached to the body and has an inner cap pivotally attached to the body, an outer cap slidably attached outside the inner cap, an actuating lever pivotally attached inside the inner cap and a second spring. Accordingly, the outer cap can be moved to a lock position to keep the nails from being fired unintentionally, and the pneumatic nail gun is safe in use.

Abstract: A drilling device for the left-handed users and the right-handed users, includes a base, a housing, a drilling chuck, a feeding horizontal shaft, a roll-shaped spring and two control units, wherein the housing is disposed above the base, the drilling chuck is disposed on the bottom surface of the housing, the feeding horizontal shaft is penetrated through the housing and has two ends bulging out the surface of the housing, the roll-shaped spring is mounted on one end of the feeding horizontal shaft, and the two control units have two hubs which are assembled disposed at the two ends of the feeding horizontal shaft and simultaneously only have ones of the right-handed handles and the left-handed handles which can be lockable jointed at the one of the two hubs, such that when a user operates the drilling device, the user can keep ones or all of the right-handed handles and the left-handed handles for operating the drilling device according to personal habitual behavior.

Abstract: A circular saw includes a table with a blade rotatably connected thereto and a first rail and a second rail located on two sides of the table of the circular saw. A rip guide has a lock handle pivotably connected to a first end thereof and a guide piece is located at an underside of the lock handle. The guide piece has two rollers connected thereto which contact the upper surface of the first rail. A second end of the rip guide is slidably engaged with the second rail.

Abstract: A laser device includes a securing ring, a supporting ring, and two laser modules; the securing ring is secured around a tube of a drilling machine, which has a transmission shaft projecting from the tube, and a drill joined to the transmission shaft; the securing ring has threaded holes thereon, and adjustment bolts projecting out from the threaded holes; the supporting ring is joined to the securing ring by means of bolts, and touches the adjustment bolts; the laser modules are fitted to the supporting ring for emitting laser lights capable of forming an intersection on a work piece positioned opposite the supporting ring, thus helping the work piece to be adjusted in position such that an intended point on the work piece is exactly faced with the shape point of the drill.

Abstract: A blade clamping device includes a driving shaft and a base member fixedly mounted to the driving shaft. An opening is defined in the base member and a blade is inserted in the base member and connected to the driving shaft. A cam member is pivotably engaged with the opening of the base member and a cam head contacts a side of the blade. The base member is received in a casing which is connected to the electric saw and an opening is defined in the casing. A lever is pivotably engaged with the opening of the casing and includes a pushing end which is located beneath a bar of the cam member so that when pivoting the lever, the pushing end pivots the cam member to remove the cam head from the blade.

Abstract: A system and method for managing the tension and maintaining registration between multiple webs in a web finishing system. The method involves transporting a first web and at least second web toward a finishing apparatus, comparing relative positions of registration marks on the webs, severing lengths of the second web in response to the relative positions, aligning each length of the second web with the first web, and then performing a finishing operation on the webs with the finishing apparatus. The system includes the finishing apparatus, devices for transporting the webs toward the finishing apparatus, devices for comparing the relative positions of the registration marks on the webs, a device for severing lengths of the second web in response to the relative positions, and a device for individually aligning each length of the second web with the first web before the webs encounter the finishing apparatus.

Abstract: A reciprocating saw includes a main body, a blade holding device mounted on the main body, and a blade detachably mounted on the support seat of the main body by the blade holding device. The blade holding device includes a bushing, a slide, a sleeve, a positioning ball, a torsion spring, and a guide rod. Thus, the blade can be mounted on and detached from the support seat of the main body easily and conveniently by rotation of the sleeve, thereby facilitating the user replacing the blade.

Abstract: A blade clamping device includes a driving shaft and a base member fixedly mounted to the driving shaft. An opening is defined in the base member and a blade is inserted in the base member and connected to the driving shaft. A cam member is pivotably engaged with the opening of the base member and a cam head contacts a side of the blade. The base member is received in a casing which is connected to the electric saw and an opening is defined in the casing. A lever is pivotably engaged with the opening of the casing and includes a pushing end which is located beneath a bar of the cam member so that when pivoting the lever, the pushing end pivots the cam member to remove the cam head from the blade.