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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 ...
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.
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
Jesse Besser (1882–1970) was an inventor and manufacturer from Alpena in the U.S. state of Michigan.He is best known for inventing, and supervising a series of improvements to, a tamping machine used to rapidly press wet, flexible concrete into blocks, thereby making possible a new generation of applications in masonry construction.
Automatic block signaling (ABS), spelled automatic block signalling or called track circuit block (TCB [1]) in the UK, is a railroad communications system that consists of a series of signals that divide a railway line into a series of sections, called blocks. The system controls the movement of trains between the blocks using automatic signals.
Like the manual block systems outlined above, automatic systems divide the route into fixed blocks. At the end of each block, a set of signals is installed, along with a track-side sensor. When a train passes the sensor, the signals are triggered to display the "block occupied" aspect on the signals at either end of that block.
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 ...
The Kress building is located between former Woolworth and J.J. Newberry stores, although the block is commonly known as the "Kress block." [7] [8] [9] Lunch-counter sit-ins and protests at the block were held by civil rights activists at the Woolworth store in the 1960s to protest segregated lunch counters in Tampa. Today, there is a ...