Don Mills, Ont. : Southam-MacLean Publications · leaf 107
eet metal of sufficient weightand thickness to withstand the force of flying piecesof the w heel in case of breakage. When high speed isnecessary, leather spark brushes or glass shields arefitted, and with those guards, coupled with a reliablemake of emery wheel there should be no trouble. Where… … Fig. 2.—Protection hood and glass shield for emerywheels. Hood in position extends over rest. machinery of to-day, manufacturers are designing theirvarious machines erected with all set screws, nuts, andbolt heads, wherever located, being countersunk orprotected by safety collars or flanges, and…
Furniture industry and trade · Woodworking industries
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