Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1982-08-02
1985-01-08
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5718, 81 572, 81114, B25B 1700
Patent
active
044921330
ABSTRACT:
In instances where it is necessary to install a pipe or cable under a road or sidewalk without forming an open topped trench through the road or sidewalk, it is desirable that the operating trench in which the installing device is positioned be as narrow as possible. This is desirable to avoid disrupting the ground adjacent the road or sidewalk more often than is necessary. The installing device is positioned in the bottom of the operating trench, and clampingly engages the actuating rod and forces it axially under the road or sidewalk. Short installation rod segments are threadedly connected into the installation rod in the narrow and deep trench as the installing device pushes the installation rod under the road or sidewalk. To threadedly connect the short rod segments into the installation rod an elongated rod segment threader successively engages the rod segments and is positioned in the ditch and aligns them with the actuating rod at the bottom of the operating trench. By actuation of a clutching drive mechanism the operator, located at the top of the narrow and deep trench, is able to connect the rod segments into or remove them from the installation rod.
REFERENCES:
patent: 121340 (1871-11-01), Deavs
patent: 347681 (1886-08-01), Bradley
patent: 1786701 (1930-12-01), Butlin
patent: 2733925 (1956-02-01), Denzler
patent: 2746331 (1956-05-01), Andersen
patent: 4098151 (1978-07-01), Bliss
Elephant Industries, Inc.
Jones Jr. James L.
Wilson Alfred E.
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