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(ii) Pneumatic power hammers: A typical form of pneumatic hammer is shown in Fig. An electric motor rotates a crank which in turn moves a connecting rod (D) to and fro i.e., therotary motion of the crank is converted into a reciprocating motion. This reciprocating motion is deliveredto a piston working inside cylinder ‘C’. The cylinder and piston assembly is provided with suitable airinlet ports, so that the entire assembly acts as a reciprocating air compressor. The compressed air can bedelivered to another cylinder piston assembly B, through the air-valve A. This air valve A is operated bythe hammerman or the person operating the hammer by means of the handle shown H in the figure.
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