File:Mechanical Contracting and Plumbing January-December 1909 (1909) (14780611711).jpg

Identifier: mechcontract1909toro (find matches)
Title: Mechanical Contracting & Plumbing January-December 1909
Year: 1909 (1900s)
Authors:
Subjects: Air conditioning Refrigeration and refrigerating machinery Heating Plumbing
Publisher: Toronto : Maclean-Hunter Pub. Co.
Contributing Library: Fisher - University of Toronto
Digitizing Sponsor: University of Toronto

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hat the mouldsaraw readily, without the use of anyparting material whatever. By thismethod, with the proper grade ofmoulding sands, very fine work is madepossible without any facing. Moreover,since no parting sand is introduced, the carrier, which runs the length of thefoundry and which allows the mould tobe taken off at whatever part of thefloor they are required, as the conveyeris reversible. This allows the mouldson being poured to be placed thereonand taken back over the hopper wherethe casting is knocked out and falls offinto a car running on a trolley under-neath and delivered to the cleaning de-partment. The sand falls through therack into the hopper where augers feedit to an elevator by means of which itis carried to the sand mixer. Thissand mixer thoroughly mixes the sandand delivers it back to the floor nearthe moulding machines. The lower portion of the cupola iscomposed ol two sheet steel shells, theinner shell being made very heavy andof the same size as the stack proper,
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Foundry, Showing Molding Machine and Conveyor. the second half of the flask upon themachine, and throwing the startinglever before removing the half mouldalready completed from the bench. Bythe time he has removed the finishedhalf-mould to the floor, the second halfmould will also be completed, and willbe ready to be lifted off. When usingsnap flasks and making light moulds,the mould may be assembled at theside of the machine, thereby making ne-cessary but one trip to the floor. Insuch case, the moulder can have twosets of flasks, and arrange it so thatthe machine will be ramming the dragfor the second mould while he is carry-ing the first to the floor. The pressure of the ram upon thesand can be quickly adjusted, and as life of the moulding sand is greatly in-creased. Eight hand squeezing machines eacliwith a capacity of 150 moulds a dayand two stripping plate machines eachwith a capacity of 150 moulds a day-built by the company are also part ofthe equipment. The main feature and mos

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