Abstract: A machine tool unit is disclosed having a housing supporting a quill and rotatable tool support spindle for longitudinal movement under fluid pressure, and including control means disposed eccentrically of the quill and connected thereto so as to control axial feed movement of the quill without exerting a bending moment on the quill which would cause directional deviation of the quill and spindle during feed movement.

Abstract: A drill is provided on which the chuck and motor are mounted on a support which moves vertically. Thus the motor rises and falls with the movement of the drill. Also the vertical movement of the drill chuck is controlled by an air cylinder which has mounted axially above it an hydraulic checking cylinder arranged so that checking occurs after an initial unchecked downward movement of the chuck. Automatic and manual operation are controlled by a five port valve in which a piston changing the air direction flow is moved by air blasts directed to each end of the channel in which the piston moves.

Abstract: A portable field machine for cutting, grinding and lapping the valve seat of a valve body having a valve disc axially translatable in a cylindrical valve chamber with respect to the seat includes a pair of axially spaced spiders having radially extendable arms engageable with the walls of the cylindrical valve chamber on opposed sides of the valve seat, the spiders being interconnected by a rigid shaft which is thereby axially positioned with the chamber axis and a tool holder adapted to selectively hold either cutting, grinding or lapping tools is rotatably and reciprocably supported on the shaft for axial movement therealong and rotation thereabout with respect to the valve seat, the tool holder rotatably supporting a carrier which is fixed against relative rotation and which is connected to a drive means for operatively rotating the tool means and tool holder concentrically with respect to the axis and the valve seat to perform profile forming operations thereon, the tool holder including feed means for ra

Abstract: A drilling machine having a base supporting a pair of ways on which moves a drill tool support having a drill spindle for holding a drill tool. A hydraulic piston and cylinder assembly positioned on each side of the drill spindle for moving the tool support along the ways. A workpiece holding chuck is positioned in the middle of the support ways and the drill spindle and hydraulic piston and cylinder assemblies are positioned in the same plane with the ways for preventing torque being applied to a drill tool and maintaining axial drilling forces on the drill spindle thereby allowing a drill to drill a straight hole in a workpiece held in the holding chuck. A control system is provided for supplying fluid to the piston and cylinder assemblies, but all of the drilling forces are carried by the piston and cylinder assemblies.

Abstract: A drill press that is hydraulically driven; the drill press including a turbine motor through which oil is pumped, and the motor having a rotor that is connected to the drill press spindle so to rotate the same.

Abstract: A sampler for extracting core samples from a mass of sugar cane. The sampler is mounted on a fixed or movable support which includes a plate member on which the cylinder of an operating jack is mounted.The piston of the jack is secured at one end of a rod which has at its other end another piston for expelling core samples. A sleeve extends around a portion of the length of the rod and rotatably mounts a hollow cylindrical core cutter with a toothed cutting edge. A motor is mounted on the sleeve for rotating the core cutter. Selectively operable temporary securing fingers are provided on the sleeve of alternate engagement with a collar on the rod so that the sleeve, core cutter and rod are displaceable in unison by the jack for lowering and raising the core cutter into and out of a mass, and with the plate member for preventing the axial movement of the core cutter with respect to the support so that displacement of the rod displaces the other piston in the core cutter to expel the core sample.

Abstract: A drilling machine for drilling holes in plaster casts or models has a frame which supports a stationary drilling platform having an opening therethrough. A motor housing is positioned below the drilling platform and is vertically movable between a rest and a drilling position on two laterally disposed top guide shafts and a centrally disposed bottom guide pin. A motor is mounted in the housing and supports a drill chuck and drill bit which penetrates through the opening to drill a hole in a cast or model on the drilling platform when the housing is moved upwardly to its drilling position. A U-shaped handle pivotally mounted on the frame and engageable with the housing permits manual raising of the housing. Alternately, a pneumatic system is described which includes a piston arrangement for raising the housing to the drilling position independently of the position of the handle. During pneumatic operation, the handle may be locked in its rest position.