Abstract: A chair is provided. The chair includes a seat having an adjustable seat height; a central column extending from the seat; a central hub having a central opening that receives the central column; a plurality of plate legs with inner and outer leg ends, each of the plurality of plate legs being spaced around the central hub and extending radially outward from the central hub and including a frame; and, a plurality of wheel assemblies, whereby each one respective wheel assembly is coupled to a respective one plate leg of the plurality plate legs. Each of plurality of plate legs includes a bracket extending substantially horizontally outward and away from the frame and defines a hole. Each wheel assembly includes a portion configured to align with each hole of each bracket of each of the plurality of plate legs to couple each wheel assembly to each respective plate leg.

Abstract: A chair is provided. The chair includes a seat having an adjustable seat height; a central column extending from the seat; a central hub having a central opening that receives the central column; a plurality of plate legs with inner and outer leg ends, each of the plurality of plate legs being spaced around the central hub and extending radially outward from the central hub and including a frame; and, a plurality of wheel assemblies, whereby each one respective wheel assembly is coupled to a respective one plate leg of the plurality plate legs. Each of plurality of plate legs includes a bracket extending substantially horizontally outward and away from the frame and defines a hole. Each wheel assembly includes a portion configured to align with each hole of each bracket of each of the plurality of plate legs to couple each wheel assembly to each respective plate leg.

Abstract: A roll bender apparatus is disclosed for bending a work piece, the apparatus including a base, a bending roller rotatably disposed on the base, a first guide roller rotatably disposed on base. and a second guide roller rotatably disposed on the base. A first work piece guide assembly is movable about the first guide roller and a second work piece guide assembly movable about the second guide roller. The first and second work piece guide assemblies are oriented to receive the work piece, and the first and second work piece guide assemblies are configured to move about the first and second guide rollers respectively in response to the work piece being bent as the work piece is advanced between the bending roller and the first and second guide rollers.

Abstract: The present application relates to a shop chair with a seat cushion supported by a strong, light-weight base assembly with an elevated central hub that threadably receives a central column to adjust the height of the seat cushion. The base includes several vertically oriented thin plate legs that extend radially outward and downward from a central hub. The outer ends of the legs are joined by a stabilizing ring with a diameter larger than the seat cushion. Oversized caster wheels and the large footprint of the base provide a stable work platform. The seat cushion can be selectively lowered until the bottom of the central post is proximal to or contacts the ground. The chair and its base are particularly suited for work done closer to the ground.

Abstract: A roll bender apparatus is disclosed for bending a work piece, the apparatus including a base, a bending roller rotatably disposed on the base, a first guide roller rotatably disposed on base. and a second guide roller rotatably disposed on the base. A first work piece guide assembly is movable about the first guide roller and a second work piece guide assembly movable about the second guide roller. The first and second work piece guide assemblies are oriented to receive the work piece, and the first and second work piece guide assemblies are configured to move about the first and second guide rollers respectively in response to the work piece being bent as the work piece is advanced between the bending roller and the first and second guide rollers.

Abstract: The present invention is a shrinker stretcher machine that uses four distinct and separate tool cartridges to perform both shrinking and stretching operations by simply removing, rotating each tool cartridge 180 degrees, and reattaching it in its designated position. Each tool cartridge removably carries a jaw that can be removed and securely replaced with either a shrinker or stretcher jaw to accommodate the operation being performed. Each tool cartridges and jaw is firmly held in place by magnets and interlocking keyed surfaces to properly align and hold the tool cartridges and jaws.

Abstract: The present is a hole saw tube notcher with a rotary vice that aligns a tubular workpiece and a hole saw aligning assembly with a rotatable arm that aligns a hole saw to form a single or multiple cut notch geometry with a set radial middle that remains fixed when the rotary arm is rotated and when different diameter workpieces and hole saws are secured to the notcher.

Abstract: The present invention is a shrinker stretcher machine that uses four distinct and separate tool cartridges to perform both shrinking and stretching operations by simply removing, rotating each tool cartridge 180 degrees, and reattaching it in its designated position. Each tool cartridge removably carries a jaw that can be removed and securely replaced with either a shrinker or stretcher jaw to accommodate the operation being performed. Each tool cartridges and jaw is firmly held in place by magnets and interlocking keyed surfaces to properly align and hold the tool cartridges and jaws.

Abstract: The present is a hole saw tube notcher with a rotary vice that aligns a tubular workpiece and a hole saw aligning assembly with a rotatable arm that aligns a hole saw to form a single or multiple cut notch geometry with a set radial middle that remains fixed when the rotary arm is rotated and when different diameter workpieces and hole saws are secured to the notcher.

Abstract: This invention is a manually operated tube bending machine with a power drive mechanism that is adjustably set to a desired bend speed. The bending machine includes a bending die, a counter die and a rotating hook die to form a desired bend into a tube or pipe. The tube bender includes a drive wheel with ratchet teeth around its perimeter. A drive pin grips one of the ratchet teeth. The drive pin is secured to a lever and torque bar. During each bending stroke, the lever and torque bar incrementally rotate the drive wheel a desired amount. The rotation of the drive wheel and hook die draw the tube through the bending and counter dies to bend the tube. An anti-spring back mechanism holds the position of the drive wheel while the power drive mechanism is advanced to grip the next ratchet tooth of the drive wheel.

Abstract: This invention is a manually operated tube bending machine with a power drive mechanism that is adjustably set to a desired bend speed. The bending machine includes a bending die, a counter die and a rotating hook die to form a desired bend into a tube or pipe. The tube bender includes a drive wheel with ratchet teeth around its perimeter. A drive pin grips one of the ratchet teeth. The drive pin is secured to a lever and torque bar. During each bending stroke, the lever and torque bar incrementally rotate the drive wheel a desired amount. The rotation of the drive wheel and hook die draw the tube through the bending and counter dies to bend the tube. An anti-spring back mechanism holds the position of the drive wheel while the power drive mechanism is advanced to grip the next ratchet tooth of the drive wheel.

Abstract: The invention is a multi-mode hammering machine that operates in a rigid mode, a flexible power hammer mode and a machine press mode to contour, shape and form sheet metal products. In all three modes, a ram is linearly stroked toward and away from a fixed die by a common ram drive assembly that includes a lever drive assembly and a reciprocating lever. The lever drive assembly moves in a rigid non-flexing manner. The reciprocating lever includes a rigid mode and a flexible mode. A conversion pin is used to engage one and simultaneously disengage the other. The lever drive assembly includes a control link that interfaces with a stroke adjustment mechanism. The gap adjustment mechanism is located at the fulcrum of the reciprocating lever. Both stroke length and gap are adjusted independently during the operation while the ram is cycling.

Abstract: The invention is a rotary draw bending machine and process for bending materials such as tubes or pipes into precise bends. A spindle holds a bending die, and a radial arm holds a counter-die. The spindle and arm are simultaneously rotated in opposite directions by a dual hydraulic drive controlled by an electro-hydraulic control system with foot pedal controls. The bend angle is preset by a protractor-like dial and limit switch mechanism. The radial arm has a slide track to align the counter-die with the bending die. The ratchet mechanism has teeth to allow incremental advancement of the counter-die when aligning it with its bending die to accurately set the gap between the dies. The machine is used with a wide variety of dies to bend a wide variety of workpiece diameters. The ratchet mechanism preferably includes a fine tuning device to provide an infinite range of alignment positions.

Abstract: The invention is a multi-mode hammering machine that operates in a rigid mode, a flexible power hammer mode and a machine press mode to contour, shape and form sheet metal products. In all three modes, a ram is linearly stroked toward and away from a fixed die by a common ram drive assembly that includes a lever drive assembly and a reciprocating lever. The lever drive assembly moves in a rigid non-flexing manner. The reciprocating lever includes a rigid mode and a flexible mode. A conversion pin is used to engage one and simultaneously disengage the other. The lever drive assembly includes a control link that interfaces with a stroke adjustment mechanism. The gap adjustment mechanism is located at the fulcrum of the reciprocating lever. Both stroke length and gap are adjusted independently during the operation while the ram is cycling.

Abstract: The invention is a rotary draw bending machine and process for bending materials such as tubes or pipes into precise bends. A spindle holds a bending die, and a radial arm holds a counter-die. The spindle and arm are simultaneously rotated in opposite directions by a dual hydraulic drive controlled by an electro-hydraulic control system with foot pedal controls. The bend angle is preset by a protractor-like dial and limit switch mechanism. The radial arm has a slide track to align the counter-die with the bending die. The ratchet mechanism has teeth to allow incremental advancement of the counter-die when aligning it with its bending die to accurately set the gap between the dies. The machine is used with a wide variety of dies to bend a wide variety of workpiece diameters. The ratchet mechanism preferably includes a fine tuning device to provide an infinite range of alignment positions.

Abstract: The invention is a rotary draw bending machine and process for bending materials such as tubes or pipes into precise bends. A spindle holds a bending die, and a radial arm holds a counter-die. The spindle and arm are simultaneously rotated in opposite directions by a dual hydraulic drive controlled by an electro-hydraulic control system with foot pedal controls. The bend angle is preset by a protractor-like dial and limit switch mechanism. The radial arm has a slide track to align the counter-die with the bending die. The ratchet mechanism has teeth to allow incremental advancement of the counter-die when aligning it with its bending die to accurately set the gap between the dies. The machine is used with a wide variety of dies to bend a wide variety of workpiece diameters. The ratchet mechanism preferably includes a fine tuning device to provide an infinite range of alignment positions.

Abstract: The present invention relates to a notching machine for forming a radial notch into a workpiece, such as the side or end of a tube, pipe or rod. The notching machine includes a workpiece positioning assembly, a hub and spindle assembly, an offset mechanism, a hub drive mechanism and a spindle drive mechanism. The workpiece positioning assembly includes a cross slide table and a vice for gripping and positioning the workpiece into a desired position. The hub and spindle assembly includes a hub that is rotatably mounted on a hub rotation assembly. The hub rotation assembly rotates about a central axis of rotation. The hub carries a spindle and its tool. The hub, spindle and tool share a common axis. This common axis is the axis of rotation of the spindle and tool. The hub, spindle and tool can be aligned in an in-line or offset manner with respect to the central axis.

Abstract: A machine and method for wrapping cylindrical workpieces such as rolls of bathroom tissue and paper towel. The machine includes a workpiece infeed conveyor, a wrapping paper feeder, a rotating carousel having a plurality of pockets, and a discharge conveyor. A piece of wrapping paper supplied by the paper feeder is perforated and burst into a single sheet. The sheet and a workpiece are directed into a pocket in the rotating carousel whereby the sheet is banded around the periphery of the workpiece by a clamping plate, underfolder plate, and brush. Next a pair of stuffer spindles driven by a barrel cam and a pair of rotating star wheels whose compound motion is derived from geneva wheels fold and tuck the wrapping paper around the parallel sides and into the center tube of each workpiece. The wrapped workpieces are ejected from the rotating carousel onto a discharge conveyor. Alternative folder mechanisms include folding fingers. The method of wrapping is also disclosed.

Abstract: A machine and method for wrapping cylindrical workpieces such as rolls of bathroom tissue and paper towel. The machine includes a workpiece infeed conveyor, a wrapping film feeder, a rotating carousel having a plurality of pockets, an oscillating exit conveyor, a discharge conveyor, and a sealing conveyor. A piece of wrapping film supplied by the wrapping film feeder is perforated and burst into a single sheet. The film sheet and a workpiece are directed into a pocket in the rotating carousel whereby the sheet is banded around the periphery of the workpiece by a clamping plate, underfolder plate, and brush secured by heat sealing the film sheet to itself. The banded workpieces are ejected from the rotating carousel onto an exit conveyor which passes the workpieces to a discharge conveyor which in turn conveys the workpieces through a sealing conveyor. Folding mechanisms for folding the wrapping film sheet extending beyond the ends of the workpieces are disclosed. The method of wrapping is also disclosed.