1971-HKRS30-16-30_Part02 — Page 23

Fencing of circular saw,

Push-sticks.

10. (1) The part of a circular saw below the bench table shall be protected by fencing it with two plates of metal or other suitable material, one on each side of the saw and such plates shall not be more than six inches apart and shall extend from the axis of the saw outwards to a distance of not less than two inches beyond the teeth of the saw.

(2) If metal plates are used for the purpose mentioned in paragraph (1), the plate shall-

() if not beaded, be of a thickness at least equal to fourteen

gauge:

(b) if beaded. be of a thickness at least equal to twenty

gauge.

(3) Behind and in direct line with the circular saw there shall be a riving knife, which shall-

(4)

have a smooth surface;

(b) be strong, rigid and easily adjustable;

(c) be so positioned that the edge of the knife peater the saw shall form an arc of a circle having a radius not ex- ceeding the radius of the largest saw used on the beach: (d) be maintained as close as practicable to the saw, having regard to the nature of work being done at the time, and, at the level of the bench table, be so positioned that the distance between the front edge of the knife and the teeth of the saw does not exceed half an inch:

(e) for a circular saw of a diameter of less than twenty-four inches, extend upwards from the bench table to within one inch of the top of the saw;

(f) for a circular saw of a diameter of twenty-four inches or more, extend upwards from the bench table to a height of not less tban nine inches.

(4) The top of a circular saw shall be covered by a strong and easily adjustable guard, with a flange at the side of the saw furthest from the fence; and such guard shall-

(d) be kept so adjusted that the flange shall extend below

the roots of the teeth of the saw;

(b) extend from the top of the riving knife to a point as low

as practicable at the cutting edge of the saw.

11. A suitable push-stick shall be kept available for use at the bench of a circular saw that is fed by hand so as to enable the work to be carried on without unnecessary risk.

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12. (1) A swing saw or pendulum saw shall be guarded as far as is practicable and shall be so designed and maintained that it automatically returns to the back position when released at any point of its travel.

(2) A swing saw or pendulum saw shall be provided with limit chains or other effective devices to prevent the front edge of the saw being pulled out in front of the work table; and such chains or devices shall be maintained in good working order.

13. A plain band saw shall have......

(a) both sides of the bottom pulley completely encased by

sheet metal or other suitable material;

(b) the front of the top pulley covered with sheet metal or

other suitable material;

(c) all portions of the blade enclosed or securely guarded. except the portion of the blade between the bench table and the top guide.

14 (1) No planing machine, which is not mechanically fed, shall be used for overhand planing unless it is fitted with a cylin drical cutler block.

(2) A planing machine used for overhand planing shall be provided with a "bridge" guard capable of covering the full length and breadth of the culting slot in the bench, and shall be so con- structed as to be easily adjusted both in a vertical and horizontal direction.

(3) The feed roller of a planing machine used for thick- dessing, except a machine used both for overhand planing and thicknessing, shall be provided with an efficient guard.

15. (1) The cutter of a vertical spindle moulding machine shall, if practicable, be provided with the most efficient guard having regard to the nature of the work being performed,

(2) For such work as cannot be performed with an efficient guard for the cutter, the wood being moulded at a vertical spindle moulding machine shall, if practicable, be held in a jig or holder of such construction as to reduce as far as possible the risk of accident to the person working the machine.

(3) A suitable "spike" or push-stick shall be kept available for use at the bench of a vertical spindle moulding machine.

Guarding of swing and pendulum saws,

Guarding of plain band

saws.

Planing muchines.

Vertical spindle moulding

machine.

16. The chain of a chain mortising machine shall be provided Chain mortising with a guard that shall enclose the cutters as far as practicable.

machine.