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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7325777 | Portable articulating tool support A portable multiple-component articulating support apparatus for engaging, moving, orientating and manipulating a hand-operated power tool within and throughout a three-dimensional workspace. The apparatus includes a clamping device for demountable engagement with a... | 02/05/2008 |
| 6796388 | Drill depth control device This invention provides a roof bolt installation apparatus including a drill stabilizing mechanism including a base having a cylindrical bore therein, and a stabilizing rod extendable from the base and slidably located in the bore. The rod has a distal end, and a dr... | 09/28/2004 |
| 6752221 | Self-supporting pneumatic hammer positioner with universal joint A self-supporting pneumatic hammer positioner for effortless command and control by an operator of a pneumatic hammer. The positioner comprises a rigid elongated template having a handle at a first end portion thereof, a saddle mount for a pneumatic hammer at a seco... | 06/22/2004 |
| 6213223 | Arrangement for supporting rock drilling apparatus An arrangement in a rock drilling apparatus comprising supports (5) directed toward the rear part of the feed, the supports being moveable by means of support cylinders (6) to support the feed during the drilling operation. The arrangement comprises a pre... | 04/10/2001 |
| 6112829 | Rock drill air leg control system The invention relates to a rock drill air leg control system incorporated in the backhead (10) of a rock drill. The system comprises a single spool valve (22) having two manual controls (46, 53), one for setting a trust applied by an air leg to a rock dri... | 09/05/2000 |
| 5322397 | Apparatus for supporting a drill in an elevated position A supporting apparatus for supporting a drill in an elevated position, the drill including a drill chuck having an axis of rotation, the drill being supported by the supporting apparatus such that the axis of rotation of the drill chuck is orientated subs... | 06/21/1994 |
| 5246313 | Apparatus for forming long and short holes and setting rock bolts An apparatus for drilling short and long holes and for fitting bolts to the short holes has a generally stationary support positioned adjacent the face and a turret angularly displaceable on the support between two end positions about a longitudinal turre... | 09/21/1993 |
| 4932481 | Roof bolt drill support A mining roof bolt drill feed mechanism whereby the drill is supported on a horizontal pylon extending from an elongate slot in a vertical box section inner strut. The inner strut telescopes within an outer box section strut with an aligned elongate slot,... | 06/12/1990 |
| 4889191 | Gooseneck assembly for rock drill and method for inserting friction rock stabilizer A gooseneck interposed between a rock drill and supporting jack leg includes an offset pivot bearing for the rock drill and an adjacent pin to facilitate initial insertion of a friction rock stabilizer into a receiving hole. Use of the gooseneck involves ... | 12/26/1989 |
| 4870730 | Tool mounting construction A tool mounting construction which includes a tool holder having a pneumatic cylinder, a piston in said cylinder for mounting a tool, pressure regulating means in communication with the cylinder for maintaining the pressure in the cylinder substantially c... | 10/03/1989 |
| 4838362 | Apparatus for manipulating a tool Apparatus for manipulating a tool which is particularly suited for use in drilling and inserting bolts into thin seams of mine workings. The apparatus (100) comprises a reaction support member (4) to support the tool, a chuck (1) for holding the tool, mou... | 06/13/1989 |
| 4818155 | Power tool system including adapter and coupling member therefor A power tool combination including a hammer drill, an adapter secured to the drill for attaching it to an elongated rod which bears on the floor, a pneumatic cylinder and piston unit mounted between the elongated rod and the drill for applying an uniform ... | 04/04/1989 |
| 4736804 | Overhead drill jig An adjustable drill jig for drilling holes in an overhead work surface such as a ceiling by an operator standing on the floor. The device is portable and easily moved from one work area to another by one person. It may readily be adjusted from the floor t... | 04/12/1988 |
| 4676322 | Supporting arrangement for a feed device for a rock drilling machine A supporting arrangement for a feed device for a drilling machine of a rock drilling unit (2) comprising a feed device (3) for a drilling machine (4), a cradle (5) supporting the feed device longitudinally displaceably and a supporting device (10) which i... | 06/30/1987 |
| 4442905 | Jig assembly for drilling vertically upward A lightweight portable jig assembly for supporting a power drill and for advancing and retracting the drill towards and away from an overhead workpiece comprises a carriage having a first tubular portion slidable on a tube standard and a second tubular po... | 04/17/1984 |
| 4402369 | Pneumatic tool A percussive-action pneumatic tool comprising a handle-carrying frame having successively accommodated therein a shock-absorber and a housing with the percussion mechanism therein, connected through a gas distribution system to a compressed air source. Th... | 09/06/1983 |
| 4368873 | Vehicular mounted pipe presser A vehicular mounted pipe presser includes a pipe-pressing assembly for pressing pipe through a medium wherein the assembly is movably supported by a vehicle and positionable between surfaces which are transverse to the direction of forces employed to pres... | 01/18/1983 |
| 4354558 | Apparatus and method for drilling into the sidewall of a drill hole A method of core cutting and apparatus operable on a seven conductor wireline logging cable for drilling a hole in the sidewall of a drill hole which comprises an elongted housing with a hydraulically operated backup shoe mounted within the housing for we... | 10/19/1982 |
| 4290490 | Roof bolting device A roof drilling and bolting device comprising a mobile chassis and two cabs mounted to the front of the chassis for independent transverse (outward to the side) movement. The cabs have floors and protective canopies. Extensible hydraulic devices position ... | 09/22/1981 |
| 4191267 | Raise-boring A drill hole in a rock body is collared by drilling a pilot hole into a tunnel, advancing the pilot drill across the tunnel to drill a hole in the opposite wall of the tunnel aligned with the pilot hole, mounting the borer head on an arbor located across ... | 03/04/1980 |
| 4136579 | Force lever attachment for hand tools A power drill attachment for exerting pressure through the drill bit onto the workpiece has a toggle linkage to provide a mechanical advantage of such sensitivity as to permit the operator to easily and quickly control the amount of pressure being exerted... | 01/30/1979 |
| 4098353 | Rotatable mine drilling apparatus A roof drilling apparatus is provided for drilling a plurality of equally spaced holes in a mine roof. The apparatus includes a rotatable base upon which is mounted a drilling mechanism, thereby effecting a circular locus of travel to the drilling mechani... | 07/04/1978 |
| 4009909 | Upward tunneling A boring assembly is advanced upwardly by thrust rams acting on a column guided traveling cross frame connected to the power tunneler from below by a non-rotating sectional support column. The support column is anchored to a holding table situated undergr... | 03/01/1977 |
| 3999616 | Method and apparatus for establishing the drilling line of an overhead boring machine A bedplate is rigidly affixed relative to the tunnel floor and includes a centrally disposed shaft extending upwardly therefrom. A rotatable base member is mounted on the bedplate for rotation about the central shaft. A boring machine adapted to bore upwa... | 12/28/1976 |
| 3951216 | Diamond drill supporting apparatus Feed frame assembly for supporting and feeding drill head which rotates drill rod about axis. Assembly includes spaced front and rear end members, laterally spaced longitudinal members and first and second hydraulic feed cylinders. Longitudinal members an... | 04/20/1976 |
