GB806663A - Improvements in circular sawing machines - Google Patents

Abstract

806,663. Sawing. ROTHLEY ENGINEERING CO. Ltd., and PALMER, W. T. June 4, 1957 [June 5, 1956], No. 17358/56. Class 145. The guide arm 23 along or within which a circular saw carriage 24 is movable for cross-cutting is mounted upon a spindle 11 or other upright component which, when the saw is to be used for snipping, is movable up and down on a wall- or bench-mounting bracket 2 either by a hand lever 20 or pedal acting against a spring 21 or by hydraulic or equivalent means. The arm 23 is clamped in a bracket 25 secured for angular adjustment, by means of studs or bolts 35 fitting in arcuate slots 26a to a forked bracket 22 which is slidable on the spindle 11 but can be locked to it by a clamp 41 in the top fork 22a of the bracket. The spindle 11 passes freely through bushes 5, 8 which are fitted in bearings in lugs 2b, 2c projecting from the bracket 2 and a rod 10 rigidly interconnects the bracket 22 and lugs 7, 9 integral with the bushes so that the angle of cross-cutting can be varied by adjusting the bushes 5, 8 in their bearings and then locking them by further clamps 41 in the lugs 2b, 2c. To secure the spindle 11 against axial movement, preparatory to cross-cutting, a further clamp 41 is provided in the casting 6 integral with the top bush 5. The carriage 24 has rollers adjustably mounted on eccentric bolts and engaging rails 28 on the arms 23 and can be locked to the arm by a screw. The clamps 41 comprise bushes 38, 39 with wedgeshaped faces 38a, 39a and a rotatable rod 40 passes through one bush and screws into the other so that the bushes can be drawn together to grip on the spindle 11 or other component. According to the Provisional Specification, the spindle may be keyed to one of the bushes.