Method of automatic operation of a percussion apparatus

Details Method of automatic operation of a percussion apparatus Method of automatic operation of a percussion apparatus

E - Fixed Constructions

02

D

121/17

E02D 7/06 (2006.01) B21J 7/44 (2006.01) E02D 7/08 (2006.01)

Patent

CA 1157327

ABSTRACT OF THE DISCLOSURE The invention provides a method of automatic operation of a percussion apparatus of the type consisting in letting fall or driving a percussion element onto an object to be struck such as a pile, a nail, a tube or the like, in relifting the said percussion element by means of a cable passing round a pulley and connected to a drum driven in rotation by driving means at least in one direction of rotation, characterized in that the said percussion element is connected by a mechanical means to the said drive drum to form a closed circuit in such a manner as to cause the stoppage of the drum to substantially coincide with the moment the strike of the said percussion on the said object ends.

380534

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