US PATENT SUBCLASS 173 / 81
MEANS TO CONTROL ADVANCE AND CYCLICALLY RECIPROCATE A CABLE-OPERATED HAMMER OR TOOL

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

81MEANS TO CONTROL ADVANCE AND CYCLICALLY RECIPROCATE A CABLE-OPERATED HAMMER OR TOOL {5}
82  DF  .~> With means to synchronize advance with reciprocating drive
83  DF  .~> Advance means bodily reciprocated
84  DF  .~> Hammer or tool cyclically disconnected from cable
85  DF  .~> With plural cable drums
86  DF  .~> Relatively elevated guide engaging cable between drive and hammer or tool {2}

DEFINITION

Classification: 173/81

(under the class definition) Apparatus comprising the combination of means to cause reciprocation of a hammer head or tool by a cable, or similar flexible element, and a means to control the cable for the purpose of controlling the forward movement of the path of reciprocatory movement of the hammer head or tool.

(1) Note. The means to reciprocate and cause forward movement of the hammer head or tool may comprise a common element such as a cable drum which oscillates to reciprocate the hammer head or tool, while progressively rotating to control the forward movement of the hammer head or tool.

(2) Note. These devices are commonly known as "Cable Tool Rigs", in the well drilling and pile driving arts.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for a hammer or tool shaft reciprocated by a gripping means which releases or yields to permit advance.

SEE OR SEARCH CLASS

254, Implements or Apparatus for Applying Pushing or Pulling Force, 264+, for apparatus for hauling or hoisting a load including a driven device which contacts and pulls on a cable.