Reciprocably supported dual drive member and features thereof

In combination, a large mass, moveably supported member reciprocably mounted in a support resting on a floor having reciprocable drive means thereon for reciprocating the large mass member, said srive means comprising a reciprocably driven piston-like element, means for reciprocating the piston-like element, transmission means to cause fore and aft reciprocation of the large mass member responsive to such reciprocation of the piston like element.

In combination, a moveably supported member which is reciprocable in relation to its support and which has conjointly reciprocable drive means thereon for reciprocating the same, and means including a port in the body thereof whereby debris can be pneumtically flushed away from the region adjacent the relatively forward end of the member in one direction of the reciprocation thereof, said drive means comprising a combustion engine and said flush means including a connection between the engine and the port whereby the combustion gases thereof can be conveyed to the port as the flush fluid for the debris, wherein the member has a chuck-like recess in the relatively forward end thereof for a tool, and the port is disposed in the recess for connection with fluid discharge means in the tool, wherein a tool is connected with the member in the recess, which has an intake port that is adapted to communicate with the port in the recess at the connection therebetween, and wherein the tool is rotatably connected with the member in the recess, and the connection includes valve means which are operable to prevent the respective ports from communicating with one another during a portion of the rotation of the tool when the body port is in the upper hemishpere of rotation.

In combination, a moveably supported tool which is reciprocable in relation to its support and has a working head at one end of the axis of reciprocation thereof, said head having fluid apertures in the working face thereof which are disposed adjacent the outer peripheral edge of the same, and there being means interconnected with the head whereby a pressurized fluid can be discharged through the fluid apertures into the region adjacent the face of the head when the tool is generating debris from the work thereof, means on the head which operatively define a relatively low pressure zone at a point relatively rearwardly of the face, debris apertures operatively interconnected with the low pressure zone so that the fluid from the fluid apertures can transport the debris relatively away from the face of the head through the debris apertures, and wherein the tool is rotatably carried in a chuck which is reciprocably mounted in the support, and the fluid discharge means include means which are operable to prevent the fluid from communicating with the fluid apertures during the upper portion of their field of rotation when the tool is rotated in the chuck.

In combination, a reciprocably supported member, a support for reciprocably mounting the member for movement along an axis, said support being mounted on skids on the ground, said skids being slidably engaged with the ground and there being drive means for reciprocating the member relative to the support, operatively engagable abutment means on the member and the support, and control means whereby the abutment means can be releasably engaged with one another to transmit motion of the member into motion of the support along said axis to tram the support over the surface of the ground on the skids.

In combination, a carriage moveably supported on a surface, and an apparatus for driving a tool or the like at a work station, and/or the carriage relative to the surface, said apparatus comprising a driven member which is moveably mounted on the carriage to reciprocate in relation to the carriage, propulsion means for reciprocating the driven member, first transmission means which are operable to interconnect the driven member with the tool or the like and responsive to reciprocation of the driven member to drive the tool or the like in relation to the support surface, second transmission means which are operable to interconnect the driven member with the carriage and responsive to reciprocation of the driven member to drive the carriage in relation to the support surface, and control means which are operable to selectively actuate and deactuate said second transmission means when the driven member undergoes reciprocation.

In combination, a carriage mounted percussive tool for impacting a work object, the carriage being moveably supported on the ground and the tool being moveably mounted on the carriage to be reciprocated in relation thereto, and there being drive means for reciprocating the tool in relation to the carriage and the ground, and control means whereby the tool can be releasably engaged with the carriage to move the carriage in relation to the ground while the tool is reciprocating in relation thereto.

In combination, a large mass member, a groundsupported support frame reciprocably mounting said large mass member, an elongated piston chamber within said large mass member, a free-floating piston within said piston chamber, and gas cushion force transmission means at opposite ends of said piston chamber for compressing gas at opposite ends of the piston stroke for imparting reciprocation of said piston into cushioned reciprocation of said large mass member whereby the large mass is reciprocated for doing work without impact with said piston, and means selectively operable for impacting said support frame with said large mass member for sliding the entire support frame along the ground in the direction of impact.

In combination, a moveably supported member, support means moveable on the ground and reciprocably mounting said member, propulsion means for reciprocating the member on the support means, and selective impact transmission means between the member and the support means for directly impacting the support means by the member, and stroke shifting means for shifting the location of the reciprocating motion of the member on said support means whereby the member and support means can be moved along the ground.