Une conception proposée pour le laboratoire de réfrigération de l'Institut de technologie de la Greater Armor . ?:.IA^! REFRICTERATING r.IACHINE La ligne Lipman a rencontré de grands favorients parmi les petits commerçants du pays be-Cc.use de sa compacité, de son bon fonctionnement, et econ-omj^. La machine Lipraan est entièrement automatique et bon nombre des ventes de la société ont été replatesde machines à fonctionnement manuel beaucoup plus grandes. Il n'y a plus de doute, mais que le mach-ine auto-matique est la solution la plus satisfaisante des problèmes des marchands de thésistes. Le modèle T^^O v;tel que choisi dans la gamme Lipman en tant que petit-

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A proposed design for the refrigeration laboratory for the greater Armour Institute of Technology . ?:.IA^! REFRICtERATING r.IACHINE The Lipman Line has met with great favoramong small merchants throughout the country be-Cc.use of its compactness, smooth running, and econ-omj^. The Lipraan machine is full-automatic andmany of the companys sales have been replacementsof much larger hand operated machines. There isno longer any doubt but that the auto matic mach-ine is the most satisfactory solution of thesmall merchants problems. The Model T^^O v;as chosen from the Lipman Lineas a typical small-store automatic machine. Thismachine has a capacity of lOOOpounds of refriger-ation per day. The s-ntire high side is erectedon a rigiil attra-ctive stand. All pai-^ts are easi-ly accessible. The control sv/itches are operatedby an electrical contact exp^-nsion thermostat. The compressor is vertical, single cylinder, and single acting. It is an enclosed type. It isbelt driven by an electric motor. The belt tens-ion is kept constant by a counter weight. An efficient oil separator is provided in 52. LIPLIAN REFRIGERATING- MACHINE the high pressure 2^s line. The condenser is of the shell and coil type;the cooling water runs through the coll and theammonia flows through the shell counter currentto the coolinf^, w?.ter. 54THE ICELESS REFRIGERATOR Housekeeping TiethodG have been completely re-volutionized in the past tvio decades. Llodern in-vention has turned the labor of the housekeeperinto a real pleasure, -he electric stove startsand stops its cooking ;7ith a turn of a sv/it3h, the vacuum cle., ner keeps the house spick and spanand the electric washer takes the drudgery out ofblue londay. And nov^ we have the iceless refrig-erator. The iceless refrigerator is ecsentia-ly amachine for keeping food dry and at a constanttemperature of thirty-eight to forty-four degreesFahrenlieit. It is a scientific fact beyond argu-ment that food spoils rapidly due to gera grovfthat temperatures of fif

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