Abstract: A roller swaying device for an emery belt machine includes a machine body provided with a machine base on top, two rollers respectively having its support shaft axially pivoted with the groove hole of the machine base, and a fit device provided at a preset position in the machine base and having a belt wheel capable to be activated to rotate and a shaft hole for receiving and activating the support shaft to rotate and move transversely there in. Besides, a swing device is fitted at a preset position in the machine body and has a swaying connecting rod capable to make the support shaft and the roller move to and fro transversely, obtaining a comparatively good grinding effect.

Abstract: A dust-sucking and power-driving motor has the opposite ends of a rotating shaft respectively formed into a wind-release driving portion connected with a wind-releasing device, and an operation driving portion connected with a carpentering machine, not only activating a blade fan of the wind-releasing device to rotate and carry on sucking scraps of wood, but also driving a carpentering machine to work.

Abstract: A dust-sucking and power-driving motor has the opposite ends of a rotating shaft respectively formed into a wind-release driving portion connected with a wind-releasing device, and an operation driving portion connected with a carpentering machine, not only activating a blade fan of the wind-releasing device to rotate and carry on sucking scraps of wood, but also driving a carpentering machine to work.

Abstract: A rollers' position moving device for a sand belt machine includes a conveyor in the machine, a sand belt, and plural rollers moving the sand belt. The rollers are deposited across on the conveyor. Further, a first wheel and a second wheel are pivotally connected with one side of each roller, and the first and the second wheel have different diameters so as to rotate with different speeds. The rotating speed disparity of the two wheels can make the two wheels move laterally right and left within a preset distance because of an inner projection surface of the two wheels. Then the rollers are rotated and moved laterally right and left by one of the wheels so that sand grinding of the rollers rotating and moving laterally right and left at the same time can grind a work being ground smooth and glossy.

Abstract: A transmission device of a table saw includes a motor and an elevating member provided on a base. A first belt is connected around the belt pulley on the front end of the motor and around a transfer member, and a second belt connected around the transfer member and around the belt pulley of a circular saw blade. The first and the second belts are activated to rotate and carry on transmission at fixed positions so as to improve the defect of a conventional device that the belt may become loose or over tight when the saw blade of the table sawing machine is moving up or down.

Abstract: A roller swaying device for an emery belt machine includes a machine body provided with a machine base on top, two rollers respectively having its support shaft axially pivoted with the groove hole of the machine base, and a fit device provided at a preset position in the machine base and having a belt wheel capable to be activated to rotate and a shaft hole for receiving and activating the support shaft to rotate and move transversely there in. Besides, a swing device is fitted at a preset position in the machine body and has a swaying connecting rod capable to make the support shaft and the roller move to and fro transversely, obtaining a comparatively good grinding effect.

Abstract: A device for quick elevating and micro-adjusting a planing workbench includes a movable workbench pivotally assembled on a bottom base, an adjusting device pivotally connected with the bottom base by a connecting rod, an adjusting base provided with an elevating rod and a support shaft pivotally connected to a preset position of the movable workbench. When the elevating rod is activated to move up or down, the movable workbench will ascend or descend quickly by an interaction of the connecting rod. In case the elevating rod is rotated to activate the support shaft to turn around, the movable workbench is micro-adjusted to move up or down slightly. Then, a locking grip is provided at one end of the elevating rod for tightly locking the elevating rod, rendering it unmovable up or down any longer but merely capable to micro-adjust the movable workbench to ascend or descend slightly.

Abstract: A device of depth index of a planing machine includes a bottom base, an upper base, an index device and a sensor device. The upper base is fitted with an index device at a preset position in the front. A push rod is pushed up to activate the index device to show a planing depth. The sensor device includes a sensing strip pivotally connected to a preset position under the upper base. As soon as contacting with a wood material moving on the bottom base, the sensing strip will rotate for a preset angle and prop up the push rod to let it activate the index device to show a numerical value of planing depth. As the sensing strip is elongate, a wood material moving on the bottom base can immediately sensed by it, no matter what size or where or how it is placed, obtaining effect of wholly sensing the wood material being planed and ensuring measuring precision.

Abstract: A rollers' position moving device for a sand belt machine includes a conveyor in the machine, a sand belt, and plural rollers moving the sand belt. The rollers are deposited across on the conveyor. Further, a first wheel and a second wheel are pivotally connected with one side of each roller, and the first and the second wheel have different diameters so as to rotate with different speeds. The rotating speed disparity of the two wheels can make the two wheels move laterally right and left within a preset distance because of an inner projection surface of the two wheels. Then the rollers are rotated and moved laterally right and left by one of the wheels so that sand grinding of the rollers rotating and moving laterally right and left at the same time can grind a work being ground smooth and glossy.

Abstract: A mobile machinery base includes a case, two caster wheels provided under rear corners of the bottom of the case, two adjustable feet with gaskets to stand on or leave the ground, and a liftable caster wheel assembly connected to a center portion of one side of the bottom of the case. An object to be moved is placed on an upper surface of the case, which has a structural strength enough for supporting heavy objects to be moved. A hang frame is fixed under the bottom of the case, connected to a fixing frame having two lateral plates. Then, if a pedal of the liftable caster wheel assembly is pressed down, the fixing frame with the adjustable feet is lifted up to leave the ground, permitting the caster wheel of the liftable caster wheel assembly contact the ground to let the mobile machinery base freely move around on the ground.

Abstract: A workpiece delivering device is to be used in a machine which has a top face formed with a channel that extends between input and output ends of the machine and that has opposite channel walls and a channel bottom. The workpiece delivering device includes a first rotatable cylinder to be disposed in the channel and having two ends adapted to be mounted rotatably and respectively on the channel walls such that the first rotatable cylinder projects upwardly relative to the top face of the machine, and a second rotatable cylinder. Each of a pair of pivot arms has a cylinder supporting end and an opposite pivot end which extends into the channel on one side of the first rotatable cylinder and which is adapted to be mounted pivotally on a respective one of the channel walls. The second rotatable cylinder is mounted rotatably on the cylinder supporting ends of the pivot arms.

Abstract: A belt-grinding machine includes an upper roller having two aligned eccentric shafts extending from its two ends, a mounting shaft pivoted to one of said eccentric shafts, a lower roller, and an abrasive belt passing over the rollers. A belt loosening unit includes a hollow casing fixedly sleeved around the mounting shaft. A handle member is attached to the mounting shaft in order to turn the mounting shaft to rotate the upper roller between a first position, wherein the abrasive belt tensely passes over the rollers, and a second position, wherein the abrasive belt loosely passes over the rollers. A torsional spring is mounted in the casing to cause the mounting shaft to return from the first position to the second position. An adjustment unit includes a plate having an opening to engage a free end of the other eccentric shaft. The plate is movable to horizontally shift the other eccentric shaft to adjust the tension of the abrasive belt when the upper roller is in the first position.