This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1870 Excerpt: ...as to regulate the degree of expansion which may be necessary or required according to circumstance. Just before Mr Spencer's patent was sealed, another patent, Mr. Brown's of Cheshire, was settled for his invention of arranging main and cut-off valves to be worked by a single eccentric and single link, which, unlike ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1870 Excerpt: ...as to regulate the degree of expansion which may be necessary or required according to circumstance. Just before Mr Spencer's patent was sealed, another patent, Mr. Brown's of Cheshire, was settled for his invention of arranging main and cut-off valves to be worked by a single eccentric and single link, which, unlike other arrangements of this class, had the link separately situated directly in front of the valve casing instead of heing formed with the hand of the eccentric; thus reducing the details in comparison with the double eccentric order, and supposed to accomplish a similar effect as the double link. The illustration, Fig. 102, is a sectional elevation and plan of the valves and gear. The cut-off valve is made to work on the hack of the main slide valve, which is so formed as to have its flanges produced with two ports or openings therein. The cut-off valve has also its flanges produced with two ports similarly, one of which always coincides with one in the main slide valve at the extremities of its stroke, while the other port is closed. The main valve is worked in the usual way by an eccentric rod and valve rod, and the latter may be, for convenience of arrangement, carried through the back of the valve casing or chest, as shown. The cut-off valve may be also worked from the back of the casing or valve chest, but in the illustration they are both represented as being worked from the front of the valve casing, the cut-off valve being also worked by a rod--both the rods being.side by side. Upon this rod is mounted a friction sliding joint that is worked by the slot link, which is suspended from a fixed centre. This slot link is actuated by a connecting rod from the main valverod joint, and by this arrangement the speed or the extent of the travel a...
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Add this copy of Link Motion and Expansion Gear: Practically Considered to cart. $73.41, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
Add this copy of Link Motion and Expansion Gear, Practically Considered to cart. $195.00, fair condition, Sold by Tiber Books rated 4.0 out of 5 stars, ships from Cockeysville, MD, UNITED STATES, published 1870 by E. & F. N. Spon, London.
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Seller's Description:
4to, hardcover. No dj. Fair condition. Front board detached, rear board loose. Ex-library copy, light interior stamping, rear pocket, institutional label. Text complete, though front signature loose and laid in. 215 pp. text, 89 (of 90) Plates. -missing Plate 71. Many Plates fold-out. An uncommon mechanical/industial engineering title in the original; this copy, though distressed, still desirable for the sharply delineated original Plates.
