.~ With means to cause or control advance of hammer head {1}
113
.~.~ Advance operated by hammer drive or actuated in response to hammer vibration
DEFINITION
Classification: 173/113
(under subclass 112) Apparatus in which the means for positively causing or progressively controlling the forward movement of the hammer head is actuated by (1) mechanical connection to the hammer head or drive therefor or (2) pulsations caused by the cyclic impacts or reversal of direction of the hammer element or a drive element therefor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
142+, for an advance causing or controlling means operated solely by vibrations from the reciprocating element in a tool drive means.
144, for an advance causing or controlling means in which reciprocatory drive and advance originate from the same mechanical element.
