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This is a trapped-key interlock on the door of an electrical switchgear cabinet. It is attached with one-way security screws to discourage casual removal, which would defeat the interlock scheme. Trapped-key interlocking utilizes locks and keys for sequential control of equipment and machinery to ensure safe operation. Trapped-key interlocks ...
The key prevents relative rotation between the two parts and may enable torque transmission. For a key to function, the shaft and rotating machine element must have a keyway and a keyseat, which is a slot and pocket in which the key fits. The whole system is called a keyed joint. [1] [2] A keyed joint may allow relative axial movement between ...
[1] While generally not considered to be a machine element, the shape, texture and color of covers are an important part of a machine that provide a styling and operational interface between the mechanical components of a machine and its users. Machine elements are basic mechanical parts and features used as the building blocks of most machines ...
Machinery's Handbook 31st Edition, 2020 "Production of Metallic Powder", Machinery's Handbook 31st Edition, 2020. Machinery's Handbook for machine shop and drafting-room; a reference book on machine design and shop practice for the mechanical engineer, draftsman, toolmaker, and machinist (the full title of the 1st edition) is a classic reference work in mechanical engineering and practical ...
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The company was founded as CMC (Computer Machinery Company Limited) on 18 September 1969 by Ray Parry. They were originally distributors and subsequently manufacturers of key-to-disk computer systems made by the US-based Computer Machinery Corporation. The systems were used by companies and government departments for data capture.
Machinery's Handbook – a classic, one-volume reference work in mechanical engineering and practical workshop mechanics published by Industrial Press, New York, since 1914; its 31st edition was published in 2020.
In the case of each function, the system of interchangeable parts typically involved substituting specialized machinery to replace hand tools. Interchangeability of parts was finally achieved by combining a number of innovations and improvements in machining operations and machine tools, which were developed primarily for making textile machinery.