File:Canadian engineer (1893) (14596582459).jpg

Identifier: canadianengineer22toro (find matches)
Title: Canadian engineer
Year: 1893 (1890s)
Authors:
Subjects:
Publisher: Toronto, Monetary Times Print. Co. (etc.)
Contributing Library: Engineering - University of Toronto
Digitizing Sponsor: University of Toronto

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on is 50 to i, and g-ives a water-pres-sure of 3% tons per square inch in the ram-cylinder. This type of intensifier possesses many advantages overthat of the ordinary type where the steam-cylinder is below,in that the design of the whole is lower, g:iving- g-reater accessto the working- parts. The piston rod is always in tension,resulting- in less wear and tear on g-lands which therefore aremore readily kept tight. Vibration is larg-ely eliminated bythe valve arrang-ement which admits steam on the inside ofthe lower cover of the steam-piston, thus providing- a steamcushion, and resulting in a noiseless drop. The valve systemis automatic in controlling the press and prevents any in-jury to the tups or dies from below, due to momentum (forinstance when cutting) for the weight of the tup is at oncetaken up by the under steam in the press traverse steam lift-ing cylinders. All the valves controlling the various operationsare at the side of the intensifier and are all operated by a single
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£Le*jtr/af^. too TZt/it foffce //rrss £L£i»TfOA/ .-fOCO roA/ foftce ^/f^SS The Forge Press Plant of the Nova Scotia Steel and Coal Co., Ltd. the heavy side strains when the ingot is not exactly under thetool centre. The pre-fiUing water-tank is an air-chamber equippedwith a pump for charging to a certain level at a pressure of65-lbs. to the sq. in. This tank supplies water to the ramand intensifier cylinders and again stores the water whichleaves the ram-cylinder when the piston rises, the flow beingautomatically controlled by a water valve. The intensifier, which produces the high hydraulic pres-sure, consists of two cylinders, a large one, with steam actu-ated piston, placed immediately above a smaller one contain-ing water. They have a common piston rod, the lower endof which, extending through and working in the watercylinder, acts as the plunger of a force pump. When the steam-cylinder piston moves upwards, the water is forced from anopening near the top of the lower or water

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