Adjustable motor-driven underbench saw

• US 3,280,861 A
• Filed: 05/08/1964
• Issued: 10/25/1966
• Est. Priority Date: 05/31/1963
• Status: Expired due to Term

• Current Assignee: Arne Gjerde
• Original Assignee: Arne Gjerde
• Inventors: ARNE GJERDE
• Application Number:
  US04/365,944
• Time in Patent Office: 900 Days
• US Class Current: 83/473
• CPC Class Codes: B27B 5/243 the saw blade being arranged underneath the work-table the circular saw blade arranged underneath a stationary work-table for sawing material in general B23D45/06
• CPC Class Codes: Y10T 83/7705 Adjustable angular relationship
• CPC Class Codes: Y10T 83/7726 By movement of the tool

Claims

1. AN ADJUSTABLE MOTOR-DRIVEN UNDERBENCH SAW HAVING A CIRCULAR SAW BLADE, A DRIVE MOTOR CONNECTED TO THE SAW BLADE, A SAW FRAME INCLUDING A STATIONARY FRAMEWORK AND A WORK SUPPORT THEREON ABOVE SAID SAW BLADE, SAID WORK SUPPORT BEING ROTATABLE ON A VERTICAL AXIS AND HAVING A SLOT THEREIN THROUGH WHICH THE PLANE OF SAID BLADE PASSES, A CRADLE IN THE FRAMEWORK BENEATH SAID ROTATABLE WORK SUPPORT PIVOTALLY SUPPORTED ON SAID WORK SUPPORT FOR TILTING MOVEMENT ABOUT AN AXIS EXTENDING IN THE DIRECTION OF THE LENGTH OF SAID SLOT AND CLOSELY ADJACENT SAID SLOT, MEANS FOR FIXING SAID CRADLE IN TILTED POSITIONS ON ITS AXIS, A MOUNTING FRAME CARRYING SAID DRIVE MOTOR AND SAW BLADE AND PIVOTALLY SUPPORTED IN SAID CRADLE FOR TILTING MOVEMENT THEREIN ABOUT AN AXIS EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO THE LENGTH OF SAID SLOT AND DISPLACED LATERALLY FROM THE AXIS OF ROTATION OF SAID SAW BLADE, AN OPERATING LEVER PIVOTED IN SAID SAW FRAME AND HAVING ONE END DISPOSED BENEATH SAID MOUNTING FRAME, A ROD EXTENDING FROM SAID OPERATING LEVER TO SAID MOUNTING FRAME, UNIVERSAL JOINTS AT THE ENDS OF SAID ROD CONNECTING THE ROD TO SAID OPERATING LEVER AND TO SAID MOUNTING FRAME, THE POINT OF CONNECTION OF SAID ROD TO SAID OPERATING LEVER BEING SUBSTANTIALLY ON THE AXIS OF ROTATION OF SAID ROTATABLE WORK SUPPORT AND THE POINT OF CONNECTION OF SAID ROD TO SAID MOUNTING FRAME DEVICE BEING SO LOCATED THAT THE ROD, AS PROJECTED ON THE VERTICAL PLANE THROUGH THE SLOT, WILL ALWAYS REMAIN GENERALLY VERTICAL AND, WHEN THE CRADLE IS TILTED BETWEEN EXTREME POSITIONS, PASSES FROM ONE SIDE TO THE OTHER OF A PLANE PASSING THROUGH THE POINT OF CONNECTION OF SAID ROD WITH SAID OPERATING LEVER AND THE PIVOT AXIS OF THE CRADLE.