. Canadian machinery and metalworking (January-June 1919). teel renders it practically worthless for the purpose in-tended. This Gilbert & Barker furnace has been designed especiallyfor the correct heat treatment of High Speed Steel. A temper-ature of 2400°F. is quickly obtained and easily maintained. Theheat is uniform on all sides of the work and loss by radiation isreduced to the minimum by special insulation. More than 50 years experience in designing and buildingfurnaces, especially for the accurate and economical heat treat-ment of metals is your guarantee of satisfaction. PROMPT DELIVER
. Canadian machinery and metalworking (January-June 1919). teel renders it practically worthless for the purpose in-tended. This Gilbert & Barker furnace has been designed especiallyfor the correct heat treatment of High Speed Steel. A temper-ature of 2400°F. is quickly obtained and easily maintained. Theheat is uniform on all sides of the work and loss by radiation isreduced to the minimum by special insulation. More than 50 years experience in designing and buildingfurnaces, especially for the accurate and economical heat treat-ment of metals is your guarantee of satisfaction. PROMPT DELIVERY ON G. & B. FURNACES Recent additions to our plant, already one of the largest inthis field, makes it possible to offer immediate shipment of yourorder. Tell us your problem and we will tell you the typeof furnace you require, but first send for Bulletin24. To-day is a better day than tomorrow--write. Gilbert & Barker Mfg. Co. West Springfield, Mass., Canadian Agents: Williams & Wilson,Montreal, Que. New York Office,26 Broadway I. Hepburn PumpingMachinery Our line embraces standard duplex pumps for boilerfeeding and for fire and general service; tank orlow service duplex pumps; duplex hydraulic pumpsfor service in connection with hydraulic lifts andpresses, accumulators and oil presses; pressure ormine pumps; horizontal power pumps and air andcirculating pumps, etc. Hepburn Pumps areMartin Pumps im-proved wherever im-provement could bemade.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
