Patents Assigned to American Machine & Tool Company, Inc.
  • Patent number: 5769575
    Abstract: A drill press has a drive motor with output shaft that drives a chuck through a rotatable and vertically displaceable quill and a first drive coupling which includes a pair of pulleys, such as cone pulleys, and a belt extended between the cone pulleys. A rotary power take-off in the form of an additional pair of pulleys and a drive belt extracts rotary power from the drive coupling between the motor and the chuck and transfers it to an oscillatory motion device. The device includes a worm and worm gear and an eccentrically mounted arm which convert rotary motion from the rotary power take-off into a reciprocating linear motion. A lever is pivotally mounted to the device with one end engaged with the quill and a remaining, opposing end coupled with the arm. Reciprocation of the arm causes reciprocation of the lever which causes reciprocation of the quill, chuck and any tool held in the chuck. The arm is releasably engaged with and is coupled with the lever through a detent block.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: June 23, 1998
    Assignee: American Machine & Tool Company, Inc.
    Inventors: Todd Laverne Stofflet, Henry Martin Pollak, Douglas Allen Bowman
  • Patent number: 5643059
    Abstract: A grinding mechanism includes a track device horizontally arranged in a base, and a slide slidably engaged on the track device. A grinding material is secured on top of the slide and moved in concert with the slide. A gear is rotatably supported in the base and a roller is eccentrically secured to the gear for engaging with the slide. A motor is disposed in the base for rotating the gear. The slide and the grinding material are moved in a reciprocating action along the track device in order to conduct grinding operations.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: July 1, 1997
    Assignee: American Machine & Tool Company, Inc. of Pennsylvania
    Inventor: Chao-Hsin Chen
  • Patent number: 5595227
    Abstract: An adjustable fence assembly includes a planar fence secured with a handle having an arcuate body portion which is rotatably coupled through an arcuate trolley member with an arcuate body portion of a fence traveler. The fence is directly pivotally coupled along its lower edge to the traveler along an axis of rotation which lies generally along the lower surface of the traveler. The lower traveler surface is supported on an upper surface of a fence track, which can be adjustably mounted to the rear cover of a conventional jointer-planer. Each arcuate body portion is about 45.degree. or less in arcuate extent with respect to the pivot axis to permit the portions to collapse and the fence to be rotated from an upright position to at least a 45.degree. position away from the jointer-planer. The angular position of the fence is selectably adjustable through the use of a single threaded fastener.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: January 21, 1997
    Assignee: American Machine & Tool Company, Inc. of Pennsylvania
    Inventor: David A. Varley
  • Patent number: 5547319
    Abstract: A machine tool apparatus having a work piece support table supported by an articulating arm. The machine tool apparatus includes a stand and a motor mounted to the stand. A movable cutting tool holder is provided and a transmission mechanism is drivingly coupled between the motor and the cutting tool holder on the stand. The apparatus also includes a work piece support table and a table positioning support movably coupled to the stand. Part of the table positioning support projects outwardly from the stand. The apparatus further includes an arm having first and second ends. The first end of the arm is pivotably coupled with the projecting part of the table positioning support. The second end of the arm is rotatably coupled with the work piece support table.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: August 20, 1996
    Assignee: American Machine & Tool Company, Inc.
    Inventor: Henry Pollak
  • Patent number: 5097601
    Abstract: An improved miter gauge includes a gauge body and a lead arm pivotally coupled together. The lead arm is provided by a substantially rigid member which includes a plurality of slots formed in a length direction of the member which define adjoining side wall portions of the rigid member. A plurality of threaded bores are provided, each through one of the side wall portions, in communciation with one of the slots. A plurality of set screws are provided in the threaded bores and are adjustable to project out of the rigid member or to span the slot and contact the opposing side wall portions of the member so that overall width of the rigid member of the miter gauge can be adjusted to fit the width of a guiding slot on a piece of power equipment.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: March 24, 1992
    Assignee: American Machine & Tool Company, Inc.
    Inventors: Henry Pollak, Edwin N. Hartz
  • Patent number: 5058280
    Abstract: An improved scroll saw blade holder includes a one-piece body having a base and a pair of arms which extend transversely from the base and define an open area therebetween. A slot is provided in the base extending entirely through the base into the open area and extending only partially through the base in a direction generally perpendicular to a plane of the body so that the body remains integral in the base at the slot. A clip is provided on the body and includes a positioning plate which is received in the slot. The positioning plate is located adjoining a set screw in a threaded bore extending from the slot to one side of the body. A portion of a scroll saw blade is received and clamped in the slot between the positioning plate and a side of the slot opposite the threaded bore with the set screw. Scroll saw blades with or without mounting pins may be accommodated.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: October 22, 1991
    Assignee: American Machine & Tool Company, Inc.
    Inventors: Henry Pollak, Gordon V. Wells
  • Patent number: 4974650
    Abstract: A guard stop is used with a power tool that includes a work surface, a tool head that projects at least partially through the work surface, a fence on a first side of the tool head and a safety guard pivotally supported on an opposite side of the tool head. The safety guard is biased to an initial position proximal the fence to cover the tool head. The guard stop includes a bracket plate fixedly secured to the power tool on the second side of the tool head. A stop member plate is mounted to the safety guard pivot and is pivotable with respect to both the bracket plate and the safety guard. The stop member plate is removably secured to the bracket by a bolt and threaded fastener. The bolt passes through an elongated slot in the bracket and can be secured at any desired positon along the slot. A portion of the stop plate is turned perpendicularly to that plate to form a stop portion which contacts the safety guard and prevents further rotation of the safety guard from the fence.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: December 4, 1990
    Assignee: American Machine & Tool Company, Inc.
    Inventor: David Varley
  • Patent number: 4664165
    Abstract: A power tool provided with a rotating blade wheel having skewed axial vanes which follow the cutting blades during rotation to create an air flow which is parallel to the axis of rotation. A shroud adjacent to the blade wheel which deflects the debris created by the cutting blade away from the radial movement of the blade wheel. The debris is exhausted through the side of the power tool housing such that the power tool may be mounted directly onto a continuous flat or level surface of a work bench.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: May 12, 1987
    Assignee: American Machine and Tool Company, Inc.
    Inventors: Henry M. Pollak, John W. Mauger
  • Patent number: D299146
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: December 27, 1988
    Assignee: American Machine and Tool Company, Inc.
    Inventors: Henry M. Pollak, John W. Mauger