GB550950A - Improvements in guards for wood-working machines - Google Patents

Abstract

550,950. Machinery guards. TWEEDALE, J., and TWEEDALE, C. W. June 26, 1941, No. 8014/41 and 8775/42. [Class 80 (iv)] A guard for a vertical-spindle wood working and like machine, comprises a number of guard sections adapted for relative angular and vertical adjustments so as, in conjunction with the work and in some cases a fence to enclose the tool wholly or substantially above and behind the work. The guard comprises a main or rear section 16, Figs. 2, 5, lateral sections 17 and a front section 18. The main section has a top 16b a central aperture in which fits a boss 19 adjustably secured by a screw 19b on a supporting arm 22 hinged at 22a to a bracket 23 adjustable on a pillar 24 secured to the machine table. Each lateral section comprises a radial arm 17a, Fig. 6, to a flange 17b on which is secured by bolts 20a a slotted skirt portion 17c. The arm 17a also has an aperture to fit the boss 19 so that the lateral sections can be moved angularly relative to the section 16 the bolt 20 moving in the slot 16d. The portions 17c can also be adjusted vertically and are kept vertical by projections 17g on the flange 17b engaging one of the slots 17e. The front section 18 bridges the gap between the members 17, is vertically adjustable, slides over a guide projection 16e and is secured after adjustment by a nut 21a on a stud 21. Figs. 8-15 (not shown) illustrate the use of the guard with work of different widths and with straight and ring fences. The section 18 and, if desired, other sections may be of transparent material. The cutter is indicated at 27.