. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . amateurs lathe, with fast and loose headstock, hand-rest, and metaltable. Fig. 3456 is of a compound slide-rest ; another arrangement of compound slide-rest is shown inFig. 3457. Figs. 3437 to 3452 are employed to illustrate principles ; Figs. 3453 to 3457 are notfancy sketches, but of machines manufactured in the highest style by J. and H. Gwynne, of Ham-mersmith, and by William Muir and Co., of Manchester. Figs. 3458, 3459, are two views of Benjamin Merri
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . amateurs lathe, with fast and loose headstock, hand-rest, and metaltable. Fig. 3456 is of a compound slide-rest ; another arrangement of compound slide-rest is shown inFig. 3457. Figs. 3437 to 3452 are employed to illustrate principles ; Figs. 3453 to 3457 are notfancy sketches, but of machines manufactured in the highest style by J. and H. Gwynne, of Ham-mersmith, and by William Muir and Co., of Manchester. Figs. 3458, 3459, are two views of Benjamin Merritts machine for boring angular holes. B isthe frame of the machine, D is a driving shaft, and E E bevel-gear for communicating motion tothe operating shaft. The novelty of Merritts boring machine consists in attaching around theoperating shaft of an ordinary boring machine a cam H, on the under-side of which is a path ofthe form of the hole to be bored. In this path runs a truck attached to a box having a rack andpinion which give motion to the hollow main shaft as well as to an inside shaft. To the bottom of HAND-TOOLS. 1801 3454,
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Keywords: ., bookcentury1800, bookdecade1870, bookidsp, booksubjectengineering
