. American engineer and railroad journal . fficient circulation found in watertube boilers; the shape of the side sections taking up the expan-sion strains and largely reducing flue and mud ring leakage;the entire elimination of staybolts, with its many advantages;the taking of all rivets or caulked joints and seams away fromthe fire, and the possibility of renewing damaged sections with-out renewing the whole side sheet and the increased safetyfrom explosion dependent upon these features. It is expected that a model of this boiler will be on exhibi-tion in space 526 at the coming convention.
. American engineer and railroad journal . fficient circulation found in watertube boilers; the shape of the side sections taking up the expan-sion strains and largely reducing flue and mud ring leakage;the entire elimination of staybolts, with its many advantages;the taking of all rivets or caulked joints and seams away fromthe fire, and the possibility of renewing damaged sections with-out renewing the whole side sheet and the increased safetyfrom explosion dependent upon these features. It is expected that a model of this boiler will be on exhibi-tion in space 526 at the coming convention. AN INTERESTING UNIVERSAL SHAPER The i6-in. single geared shaper herewith illustrated has beendesigned by the Stockbridge Machine Company to meet con-ditions where a universal shaping machine that can be workedto or within limits is necessary, and it is fitted with many spe-cial attachments fitting it for practically every possible require-ment of a shaper for tool room or die work. Prominent among tlie special features is the power rotary. feed to the tool slide, which is mounted on top of the ram. Thehead is revolved by a worm and worm gear, the worm beingconnected to the pawl shown on the side of the ram by a trainof gears. The reciprocating motion of the pawl is imparted bya dog. which is adjustable along the ram gib, and can be setto give any desired amount of throw to the pawl; the amountof throw determining the amount of feed to the worm worm can be rotated in either direction and the construc-tion is such that when desired the head can be rotated by the rotary head is not in use it is locked to the ram bymeans of two bolts on either side of the head. The head slide is provided with an automatic stop for thedown feed which will be found of advantage in the duplica- tion of parts. The stop prevents the tool from feeding downtoo far and spoiling the work, and it also allows the operatorto attend to other work while the machine is running. Anautomatic feed
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
