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Crown block (#13) is the stationary end of the block and tackle. Degasser (not pictured) is a device that separates air and/or gas from the drilling fluid. It is typically mounted on top of the mud tanks. Derrick (#14) is the support structure for the equipment used to lower and raise the drill string into and out of the wellbore. This consists ...
Lake boat designs changed to accommodate the Hulett unloader, and became much larger, [1] doubling in length and quadrupling in capacity. [citation needed] By 1913, 54 Hulett machines were in service. Two were built at Lake Superior (unloading coal) and five at Gary, Indiana, but the vast majority were along the shores of Lake Erie. The ...
At its peak, it was the largest employer in Tampa, employing 16,000 people. Tampa Shipbuilding closed after the war in 1947, and few traces remain of its facilities. [3] 9 of 72 Cannon-class destroyer escorts. Cates (DE-763)... Sutton (DE-771) plus 3 launched, cancelled and scrapped (772, 773, 774) 24 of 123 Admirable-class minesweeper
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With these machines 10 men could produce as many blocks as 110 skilled craftsmen. [4] A pulley-block has four parts: the shell, the sheave, the pin for locating the latter in the shell and a metal bush, or coak, inserted into the sheave to save wear between it and the pin. Blocks can vary in size and in the number of sheaves.
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Hydraform International Pty Ltd. is a manufacturer of brick and blockmaking machines. It was founded in Johannesburg, South Africa. [1] The company specialises in brick and blockmaking machines and accessories that enable the development of a stabilised soil cement block or a compressed earth block (CEB). Their products include stabilised soil ...