Table saws with safety systems are disclosed. The safety systems detect and react to dangerous conditions, such as contact between the blade and a person. The table saws may include a switch, a first light that illuminates to indicate the safety system is operable, and a second light that illuminates to indicate that the safety system is inoperable. The switch may not power the saw when switched on if the second light is illuminated.

A multi-purpose tool guide apparatus for use with woodworking and similar applications where the apparatus can be employed as either a stationary guide for applying a biasing force against a workpiece or as a hand-held tool for pushing or controlling a workpiece that us being cut or shaped. The multi-purpose apparatus includes features and components that allow for it to be configured and employed in various configurations.

A multi-purpose tool guide apparatus for use with woodworking and similar applications where the apparatus can be employed as either a stationary guide for applying a biasing force against a workpiece or as a hand-held tool for pushing or controlling a workpiece that us being cut or shaped. The multi-purpose apparatus includes features and components that allow for it to be configured and employed in various configurations.

Throat plates for table saws and table saws are disclosed. In some embodiments, the throat plates and/or saws have at least one securement mechanism to secure and prevent inadvertent removal of the throat plate from the throat of the saw. In some embodiments, at least one of the securement mechanisms also provides a height adjustment mechanism and/or prevents vertical removal of the throat plate. In some embodiments, the throat plate has an accessory mounting port that provides a portal for accessories, including safety accessories, to extend through the plate from beneath the table of the saw. In some embodiments, the port extends from the plate's outer perimeter to divide the plate's rear end portion into a pair of spaced-apart members. In some embodiments, these members are independently secured to the table saw and retained apart from each other by one or more of the securement mechanisms.

Throat plates for table saws and table saws are disclosed. In some embodiments, the throat plates and/or saws have at least one securement mechanism to secure and prevent inadvertent removal of the throat plate from the throat of the saw. In some embodiments, at least one of the securement mechanisms also provides a height adjustment mechanism and/or prevents vertical removal of the throat plate. In some embodiments, the throat plate has an accessory mounting port that provides a portal for accessories, including safety accessories, to extend through the plate from beneath the table of the saw. In some embodiments, the port extends from the plate's outer perimeter to divide the plate's rear end portion into a pair of spaced-apart members. In some embodiments, these members are independently secured to the table saw and retained apart from each other by one or more of the securement mechanisms.

A band saw machine with a disk brake device is provided. A lower gravity wheel is provided with a disk which is turned synchronously. The circumferential edge of the disk is provided with a brake seat. A brake wire provided at the bottom of the band saw machine is connected with a brake lever which can be pivoted. The upper end of the brake lever is in contact with a micro switch seat. Thereby, when the brake lever is pressed, the upper end of the brake lever is away from the micro switch seat, such that the band saw machine is cut off the power supply to stop running. The brake wire links the crank of the brake seat. The brake seat brings a brake action to the disk, such that the lower gravity wheel stops running so as to stop the operation of the saw band of the band saw machine. The present invention provides practical effects of emergent stopping and safety.

A band saw machine with a disk brake device is provided. A lower gravity wheel is provided with a disk which is turned synchronously. The circumferential edge of the disk is provided with a brake seat. A brake wire provided at the bottom of the band saw machine is connected with a brake lever which can be pivoted. The upper end of the brake lever is in contact with a micro switch seat. Thereby, when the brake lever is pressed, the upper end of the brake lever is away from the micro switch seat, such that the band saw machine is cut off the power supply to stop running. The brake wire links the crank of the brake seat. The brake seat brings a brake action to the disk, such that the lower gravity wheel stops running so as to stop the operation of the saw band of the band saw machine. The present invention provides practical effects of emergent stopping and safety.

Table saws are disclosed. The table saws can include a blade, an arbor, an arbor block, an elevation carriage, and a latch that connects the arbor block and the elevation carriage. The arbor block can have a first position in which the latch connects the arbor block and the elevation carriage, and a second position in which the latch does not connect the arbor block and the elevation carriage. The arbor block can pivot from the first position to the second position upon the occurrence of a retraction force. The table saw can include an actuator to cause the occurrence of the retraction force, and detection electronics to detect contact between the blade and a person. Woodworking machines with detection and reaction systems are also disclosed. A reaction system can include an explosive that causes retraction of a cutting tool.

Table saws are disclosed. The table saws can include a blade, an arbor, an arbor block, an elevation carriage, and a latch that connects the arbor block and the elevation carriage. The arbor block can have a first position in which the latch connects the arbor block and the elevation carriage, and a second position in which the latch does not connect the arbor block and the elevation carriage. The arbor block can pivot from the first position to the second position upon the occurrence of a retraction force. The table saw can include an actuator to cause the occurrence of the retraction force, and detection electronics to detect contact between the blade and a person. Woodworking machines with detection and reaction systems are also disclosed. A reaction system can include an explosive that causes retraction of a cutting tool.

The present invention is a guard system for a band saw. The guard system moveable from a guarded position, covering a saw blade, to an exposed position, exposing the saw blade for cutting, with an actuator operable with a foot control.