Rudimentary treatise on the construction of cranes, and machinery for raising heavy bodies, for the erection of buildings, and for hoisting goods / By Joseph Glynn.

  • Joseph Glynn
Date:
1849
Catalogue details

Licence: Public Domain Mark

Credit: Rudimentary treatise on the construction of cranes, and machinery for raising heavy bodies, for the erection of buildings, and for hoisting goods / By Joseph Glynn. Source: Wellcome Collection.

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    tenacity and strength; the shank of the barbed weapon was often bent into all forms by the exertions of the wounded whale, whose capture depended upon that slender rod of iron. Messrs. John Abbott and Co., of the Park Iron Works, Gateshead-on-Tyne, kindly offered to make any experi- ments on chains which might be thought necessary ; and Mr. William George Armstrong, of the Elswick Works, Newcastle, readily supplied drawings and details of his powerful water cranes. This work has been written in such intervals of pro- fessional engagement as presented themselves, from a wish to diffuse information respecting a class of machinery which the author has had constantly to employ, and to construct, for many years past; and also to second the views of the publisher, by contributing to a series of books for beginners, to be published at a cheap rate: for the first of these reasons the work will be found unequally written, and, for the last, it has been written almost in the same conversational manner in which he has been used to address his pupils and assistants. REFERENCE TO THE PLATES. Frve-Ton Crane.—This is shown by a Side-Elevation, anda Back View, and the Mechanism may be described as follows :— A, the principal Wheel, fixed on the barrel-axle, is in diameter 4 ft., and has 96 teeth, 13 in. pitch. B, the Pinion, 6 in. in diam., 12 teeth, 13 in. pitch. D, the Pinion, or Winch-axle, 43 in. ; 11 teeth, 14 in. pitch. E, the Friction, or Brake Wheel. F, the Barrel. Gc, Guide-rollers for the chain. H, the Collar, fitted with anti-friction rollers. TeNn-Ton Crane, also similarly shown, has the wheel work proportioned as follows :— The principal Toothed Wheel, mounted on the barrel-axle, is in diameter 4 ft. 9 in., with 92 teeth, 2 in. pitch, and 4 in. broad. Pinion, working in do., 7 in. ; 1] teeth, 2 in. pitch, 44 in. broad. 2nd Motion Wheel, do. 3 ft.; 72 teeth, 13 in. pitch, 3 in. broad. Ist Motion Pinion, do, 6} in.; 12 teeth, 14 in. pitch, 34 in. broad. Machinery for turning the Cranes :— Wheel on Crane-post, 2 ft. 8 in.; 52 teeth, 2 in. pitch, 32 in. broad. Pinion working in do. 7 in.; J1 teeth, 2 in. pitch, 33 in. broad.