Tool driving or impacting – With indicating or signaling means
Patent
1977-06-15
1978-03-21
Taylor, Dennis L.
Tool driving or impacting
With indicating or signaling means
61 63, 173 34, 173 38, 175219, E21C 1102, E21C 2722
Patent
active
040797929
ABSTRACT:
A horizontal deck extends forwardly from a self-propelled body portion. An elevating mechanism pivotally connects the deck to the body portion for vertical movement of the deck into and out of position on the mine floor. A mast-type roof drilling unit is mounted on the front of the deck and includes a vertically movable drill pot for advancing a rotating drill rod into the mine roof for drilling a bore hole therein. The deck is positioned on the mine floor during the drilling operation. During tramming of the body portion the deck is raised to an elevated position above the mine floor. A roof support assembly is supported by telescoping devices above the deck to provide overhead protection for the machine operator during the drilling and tramming operations. During drilling the roof support assembly is raised to abut the mine roof and support the mine roof above the operator on the deck. To facilitate tramming the body portion, the deck is lowered from the mine roof a sufficient distance to permit raising the deck from the mine floor.
REFERENCES:
patent: 3768574 (1973-10-01), Long
patent: 3865197 (1975-02-01), McCormick
patent: 3893520 (1975-07-01), McCormick
patent: 3937517 (1976-02-01), Donovan et al.
patent: 3951215 (1976-04-01), Galis
patent: 4022026 (1977-05-01), Childress
patent: 4026118 (1977-05-01), McCay
Denham Roy R.
Paul Edwin B.
Adams John M.
Mining Equipment Division, a division of FMC Corporation
Price, Jr,. Stanley J.
Taylor Dennis L.
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