GB190429285A - Method of and Apparatus for Cutting Material to Form Mitre or Bevel Joints. - Google Patents

Abstract

29,285. Wales, R. Dec. 31. Mitering.-In a machine for cutting material such as moulding to form mitre or bevel joints in which the strips are held crossing in divergent planes, which are stationary when a hand-saw is used, but are movable when a circular saw is used, the supporting-planes are so placed that if produced, they would pass through the axis of the saw spindle, or be parallel to and equidistant from such radial planes so as to cut both strips simultaneously. To the main bracket of the machine is bolted a bracket 4, Figs. 6 and 8, which pivotally supports on the saw spindle 6 a guide-bracket 5 having a quadrant 7, slot 8, pin 9, and nut 10 to fix it in any position, the quadrant being provided with a lug 15, the machined strips 13, 14 of which serve as a bed for sliding a flanged moulding rest 11 within guides 17, 18. The other moulding rest 19 is fixed to a lug 20, the under surface of which is machined to slide on the lug 21 formed integral with the bracket 22. The rests may be moved towards the saw by band or by chains 53, 45, both of which are attached at one end to a shackle 47 secured by a bolt to a footlever, the former by a rod 56, and each of which is attached at the other end to its respective rest, the former passing over a pulley 54 and the latter over a series of pulleys. To enable the machine to be driven from either side, bearings are attached on each side for a spindle 30, which carries fast and loose pulleys and also a spur-wheel for gearing with a pinion 35 secured on the saw spindle 6. In the bearing 27 rotates the boss 36 on the pinion, which, together with the collars 39, 41 and the saw 16, is secured by a washer and nut against a shoulder on the enlarged portion 37 of the saw spindle, which rotates in the bearing 26.