Abstract: The automatic feed drill includes a spindle mounted therein for rotating in reciprocating movement. The spindle is rotated by spindle rotation gear that is engaged with the main drive gear which is ultimately driven by an air motor or the like. The feed and retraction movement (reciprocation) is caused by a spindle feed gear that is threaded onto the spindle. The spindle feed gear is engaged with a feed gear which, during feed movement, is driven by the main drive gear, and during retraction movement, is shifted into a position wherein the feed gear is prevented from rotating. The spindle also carries a collar or other abutment that engages a shift lever at the end of the feed movement. The shift lever is moved by the collar, and, due to its interconnection with the feed gear, moves the feed gear out of engagement with the main drive gear and into the position wherein it is prevented from rotating. The apparatus also includes a yieldable stop device that holds the feed gear stopped during retraction movement.

Abstract: A machine tool has a workholder and an axially aligned toolholder in juxtaposed relation, mounted for relative rotation. A first slide supported for longitudinal reciprocating movement along a "y" axis, supports a cross slide on which a toolholder is mounted for reciprocating crosswise movement to the first slide along an "x" axis. Bell crank motion transmission mechanism on the first slide is interposed between a push bar connected between an NC controlled rotary servo motor and the cross slide, and another NC controlled rotary servo motor is mounted to operate the first slide. Rotary to linear motion translation mechanism couples one servo motor to the first slide and another servo motor to the push bar. The push bar has a longitudinally extending flat face portion thereon and a member extends parallel with the flat face portion crosswisely to the longitudinal extent thereof to ride along the flat face portion.

Abstract: A tool kit is provided for repairing the snap ring grooves of a cam follower bore in a diesel engine cylinder head without removing the cylinder head from the cylinder block. The tool kit includes a cutting tool which will both enlarge the cam follower bore to allow the use of an oversized spring retainer and cut an enlarged snap ring groove to allow the use of a more substantial plate-type snap ring. A snap ring installation tool allows for easy placement of the snap ring in the cam follower bore. A concentric wrench having concentric yet independently movable sockets for quick valve and fuel injector clearance adjustment is included.

Abstract: A spindle which may be connected to machine tools, taking power from a rotating power shaft of the machine for advancing and retracting a rotating tool at right angles to the power shaft of the machine. The spindle has a rearward uniform diameter screw which projects through a feed nut and into a hollow headstock. The feed nut has threads engaging the threads of the screw, together with an adjacent hollow section which seats an annular thrust bearing, as well as a rear collar of the headstock which constrains the headstock to move with the feed nut. Power is transferred to the headstock by means of a rotating quill, coaxial with the screw, but axially constrained within a housing. The quill is provided with a lengthwise keyway which is colinear with a similar, but much longer keyway in the headstock. The headstock is able to axially slide back and forth through the quill as the headstock is pushed and pulled by the feed nut moving on the screw.

Abstract: A positive feed drill having a spindle drive gear train and a spindle feed gear train coupled to the drive gear train by side teeth on coupling gears mounted on the same shaft is provided with actuatable means for uncoupling the feed coupling gear from the drive coupling gear, and locking it when the spindle has been fed a predetermined extent, thereby retracting the spindle, and for unlocking the feed gear train, once the spindle is retracted, without recoupling it to the drive gear train, thereby holding the feed gear train in an idle mode until the automatic means is manually reset.

Abstract: The automatic feed drill includes a spindle mounted therein for rotating in reciprocating movement. The spindle is rotated by spindle rotation gear that is engaged with the main drive gear which is ultimately driven by an air motor or the like. The feed and retraction movement (reciprocation) is caused by a spindle feed gear that is threaded onto the spindle. The spindle feed gear is engaged with a feed gear which, during feed movement, is driven by the main drive gear, and during retraction movement, is shifted into a position wherein the feed gear is prevented from rotating. The spindle also carries a collar or other abutment that engages a shift lever at the end of the feed movement. The shift lever is moved by the collar, and, due to its interconnection with the feed gear, moves the feed gear out of engagement with the main drive gear and into the position wherein it is prevented from rotating. The apparatus also includes a yieldable stop device that holds the feed gear stopped during retraction movement.

Abstract: The automatic feed drill includes a spindle mounted therein for rotating and reciprocating movement. The spindle is rotated by a spindle rotation gear that is engaged with the main drive gear which is ultimately driven by an air motor or the like. The feed and retraction movement (reciprocation) is caused by a spindle feed gear that is threaded onto the spindle. The spindle feed gear is engaged with a feed gear which, during normal feed movement, is driven by the main drive gear, and during retraction and rapid feed movement, is shifted into a position wherein the feed gear is prevented from rotating. During rapid feed the motor direction is reversed by a reversing valve. The apparatus also includes a yieldable stop device that holds the feed gear stopped during retraction and rapid feed movement.

Abstract: A device for automatic advance of a rotating tool towards a workpiece, which includes a rotating tool holder for holding a cutting tool for operation on the workpiece. A gear wheel bears against the rotating tool holder which forces it toward the workpiece. A holder is provided to secure the gear wheel with respect to the workpiece. A device associated with the rotating tool holder engages the gear wheel and rotates it as the tool holder rotates. Associated with the holder and the gear wheel is a mechanism for advancing the gear wheel towards the workpiece as the gear wheel rotates. A stop motion apparatus associated with the gear wheel and the rotating tool holder is included for stopping the rotational movement of the gear wheel. The stop motion apparatus consists of a non-rotatable cam which operates on the cam follower to disengage it from the gear wheel, stopping the rotating movement thereof during a segment of the rotation of the tool holder.

Abstract: A mechanical quill having selective braking capability, achieved by a pneumatic cylinder (110) mounted to one motor (80) for selectively driving a braking member (120) into a braking material (104) coupled to a motor armature (84). This braking member (120) interrupts a clutch-type drive path through the motor as desired, to prevent advance of a quill.

Abstract: A set screw pocket drilling device for drilling blind holes in a pipe surface at a pipe joint for set screws holding the joint together including an externally threaded sleeve sized to fit the set screw hole and engage the surface of a pipe within a retainer in which the set screw hole is drilled, a drill fitting through and rotatable relative to the sleeve, and apparatus for rotating the drill relative to the sleeve. One embodiment of the device includes only a sleeve and a drill fitting through the sleeve having an outward end extending from the outward end of the sleeve for engagement of a wrench to rotate the drill and the sleeve.

Abstract: A positive feed drill having a spindle drive gear train and a spindle feed gear train, coupled to the drive gear train by side teeth on respective drive and feed coupling gears mounted on a common shaft, is provided with a spring between the feed coupling gear and a housing to bias the feed coupling gear against the drive coupling gear to feed the spindle forward as it drills. A positive stop prevents the spindle from feeding beyond a predetermined point, thus causing the feed coupling gear to be driven by the spindle. A slope on the faces of the side teeth engaging the drive and coupling gears in order to allow the feed coupling gear to ratchet over the drive coupling gear when the spindle feed reaches the positive stop.

Abstract: A boring tool particularly useful for cutting counterbores in an engine block includes means for selectively engaging and disengaging an output shaft which is rotated and axially advanced during the cutting operation. Preferably, the selective engaging and disengaging means includes feed threads formed on the output shaft, and a threaded means which is selectively moveable into and out of threaded engagement with the feed threads on the output shaft. Preferably, the boring tool is of the differential-rate type wherein the output shaft is rotated at a first predetermined rotational rate and the threaded means is rotated at a second different predetermined rotational rate. The differential rotational rate establishes the advancement rate of the output shaft. The position of the output shaft and the cutter element it carries can be readily adjusted without necessity of operating the boring tool to establish the cutter position.

Abstract: A portable tool for selectively boring and refinishing one or more seating surfaces (30, 32) of end-loading ball valves. A cutter head assembly 146 bearing a tool bit 190 is translatable in an axial direction through the threaded cooperation of axial adjustment means 72 and the interior surface of a tool housing 68. The bit 190 is radially displacable when desired by the engagement of a radial feed mechanism, the engagement being effected by a bar member 122 selectively movable in a direction parallel to the axis of the tool. A cap 125 cooperates with an essentially flat chord-like portion 120 of the exterior of housing 68 to provide a channel through which the bar member 122 extends. The bit 190 includes the lowermost extremity of the cutter head assembly 146 and, in at least some positions of the bit 190, the greatest radial extremity of the cutter head assembly.

Abstract: Air-operated, hydraulically controlled portable drill-countersink tool automatically clamping to workpiece. A spindle attached to drill is connected to gearing from a motor by helical splines to withdraw the spindle, to counter spindle-feeding force, responsive to encountering increased torque due to increased resistance in drilling or countersinking. In a hydraulic cylinder for collet clamping a lower air pressure is converted to higher hydraulic pressure. When drilling depth is reached, drill feeding changes to drill withdrawal and that change is triggered by blocking of an air vent by a member traveling with the spindle. A lower drill speed during countersinking is achieved by a valve reducing air supply to the motor and change in that valve is also triggered by blocking of air vent by a member traveling with the spindle. The blades of the air motor do not change in extension when loaded and the motor has constant torque.

Abstract: An improved device for tapping and plugging fluid conductors under high pressure has independently operable feed and cutting motors for improved cutting action. The device has a cutter housing whe precise location of the cutter on the drive axis to allow the cutter to be operated remotely.

Abstract: This tool is for performing precise machine operations on boiler tube ends, while the tubes are in place in the boiler, and it consists primarily of a hand-held housing, including therein a main gear and pinion gear, designed specifically for strength and long life, the combination serving to rotate a cutting tool holder, having a multiple number of cutting blades. It further includes a self-contained air motor, for driving the cutting tool holder, so as to mill the outside diameters of the boiler tubes, and the tool also includes a collet and rod secured to its center shaft, for locking the tool in a boiler tube.

Abstract: In a positive feed power drill having a spindle drive gear train and a spindle feed gear train, and having hydraulic (air) means for actuating a piston to disengage the feed gear train for automatic retraction of the spindle, provision is made for field alteration of a valve in the hydraulic system, and associated actuating mechanism, to automatically reverse the positive feed when the spindle has been driven either (1) a predetermined extent set by a nut on the spindle which engages an arm over a valve stem and pushes the valve stem to a reversing position or (2) to a predetermined stop when countersinking, at which time the spindle stops advancing, thereby causing the spindle feed gear to have a tendency to move upwardly in the spindle actuator housing.

Abstract: Sharpening mechanism for moving at a variable speed along the length of the sharp edge of a reciprocating knife used in cloth cutting machines is disclosed. The apparatus includes a driven grinding apparatus (26) such as is known in the art for contacting an edge of a reciprocating knife (24). Driven grinding apparatus (26) is moved by a tubular carrier member (44) which moves the grinding mechanism (26) along the edge of reciprocating knife (24) in a manner also known in the art. A traverse mechanism for moving the carriage along the knife edge includes a guide mechanism (52) attached to tubular member (44) for following left and right hand peripheral threads (34) cut in the drive shaft (32).

Abstract: A drilling machine of the woodpecker type employs a spindle carrying a drill. The spindle is mounted for rotation in a housing having an attached feed screw and those members form an assembly that can be axially moved while the spindle rotates to enable the drill to be fed toward and retracted away from the work. The feed screw is engaged by a nut whose position is controlled by a rapid traverse mecahnism which can rapidly retract the spindle away from the work and can rapidly advance the spindle toward the work. The rapid traverse mechanism holds the nut fixed in position in the interval between rapid advance and rapid retraction. A peck feed mechanism is connected to the feed screw and repetitively feeds the spindle toward the work by causing the feed screw to progressively advance into the nut in the intervals when the nut is fixed in position. A hitch feed is coupled to the feed screw and acts to prevent the drill from bottoming in the hole on rapid advance.

Abstract: A low cost multi-directional movement cam controlled mechanical positioning apparatus is described for automatically tracing out the path of movement for the working head of a machine tool or the like. The apparatus may be embodied in a single machine providing for three-dimensional movement of the working head with or without additional controlled movement of the working head in either pitch, roll or yaw. Alternatively, the apparatus can be employed to provide additional degrees of movement either along a z-axis and/or in either pitch, roll or yaw to the working head of a two-dimensional automatic machine tool or conventional construction. The apparatus comprises a set of at least three relatively large diameter, disk-type, control-drive cams rotatably supported on a base member for controlling movement of the working head of a machine tool or the like within a plane defined by complementary axes of movement (such as the x-y axes) and along at least one additional degree of movement.

Abstract: This disclosure relates to a tool holder including a driving cylinder, a driven cylinder reciprocatable and rotatable within the driving cylinder and attachable with a tool, first threaded means reciprocatable and rotatable together with the driven cylinder and having the same pitch as that of said tool, and second threaded means in threading engagement with the first threaded means and rotatable relative to and engageable with part of the driving cylinder to stop axial movement away from a workpiece and adapted to prevent its rotation relative to said first threaded means, such that the rotation of said first threaded means forces the tool to be advanced accurately with the same pitch as that of the tool.

Abstract: Tapping apparatus is provided for cutting an opening in the wall of a conduit and providing fluid tight communication between such opening and a second conduit via a rotatable outlet to facilitate alignment and connection of the second conduit to the tapping apparatus.

Abstract: A quill drive comprising a housing adapted for mounting on machine tools. A quill is slidably mounted in a longitudinal bore in the housing, and is longitudinally positioned by a ball screw. The ball screw is driven for longitudinal positioning of the quill by a variable speed, reversible motor. The quill rotatably supports a spindle for driving various cutting tools. The spindle is advanced longitudinally by the quill and is rotatably driven by a second motor. The quill drive can be used singly or in a multiple arrangment on transfer machines or other automatic equipment. The unique design has fewer parts resulting in a simple reliable, relatively inexpensive device which is compact and easy to use. A relatively simple modification of the gear box converts the quill drive into a drive for tapping threaded holes.

Abstract: A compact boring tool has a support base with a pair of blocks mounted thereon to mount a work piece and a feed support block spaced apart therefrom having a threaded opening for supporting a feed screw. The feed screw has threads matching the threaded opening of the support block and a quill rotatably mounted through its center, the quill having a socket head for being driven and a shank end for receiving and securing a drill bit or drill chuck. A locking pin selectively locks the quill to the feed screw to provide for power backing out of the feed screw and quill after a hole has been drilled in the work. A support plate attachment is provided for converting the boring tool for surface boring operation.

Abstract: A positive feed drill having an elongated spindle mounted for reversible longitudinal motion in a drill housing. The spindle has an hexagonal cross-section with the apices of the hexagon being threaded. A toothed drive gear having a hexagonal aperture centrally thereof has a close sliding fit with the spindle and is mounted for rotating the spindle. A feed gear having a threaded aperture centrally thereof is in threaded engagement with the spindle apices and is selectively rotated at a different rotational speed than the drive gear to longitudinally advance and retract the spindle. A gear for driving the feed gear is pin-slot locked to a motor gear for longitudinal spindle advancement, and is pin-slot locked to the housing for rapid spindle retraction. A pneumatic circuit in cooperation with limit valves and stop members provides completely automatic drilling to an adjustable depth, a dwell, and a positive retract operation with an economy of pneumatic energy.

Abstract: The improved locking means includes a pair of shaft mounted gears that are in mesh with the thread on the exterior of the feed screw mounted in the housing of a positive feed drill. On the opposite ends of the shafts are mounted gears which rotate with the shafts. When the drill tool holder is not to be advanced, the gears and shafts rotate as the feed screw is being rotated and thus do not cause axial movement of the feed screw as the feed screw rotates. A rack gear is located in the housing adjacent the spur gears. A pressure actuated piston is provided to move the rack gear into engagement with the spur gears to lock the spur gears and shafts against rotation. When this occurs, the gears in mesh with the thread on the feed screw act as a fulcrum so that the feed screw and tool holder are moved axially as the feed screw rotates.

Abstract: A peck-drilling apparatus for quill feed units of the type having a frame member and a tool quill of the type adapted for reciprocative movement with respect to said frame member, together with the usual means to rapidly advance a tool toward a workpiece preparatory to performing a machining operation thereon, means to slowly advance the tool while said machining operation is taking place, and means to rapidly retract said tool at the conclusion of said machining operation, wherein a peck-drilling operation is accomplished by providing a plurality of cam mounting bars fixedly mounted to the tool quill parallel to the axis of reciprocation and having various cams mounted thereon, said cams adapted to operate limit switches fixedly mounted to frame member as they pass thereby.

Abstract: A lead screw tapping unit is disclosed wherein a tap or thread forming die is mountable on a tool support spindle which is longitudinally movable with a nonrotatable quill. The spindle is rotatably driven by a reversible drive motor and has a lead screw carried thereon which cooperates with a lead nut to effect controlled inward feeding and withdrawal of the tap relative to a workpiece. The lead nut carries a cam bushing which is operative to actuate a safety switch and deenergize a drive motor to stop rotation of the spindle should the spindle and tap undergo a thrust overload condition, or if seizure occurs between the lead screw and lead nut.

Abstract: A tapping machine is herein disclosed. The tapping machine includes a base. A frame is connected to the base. A movable drive assembly is movably connected to the frame. A cutter is connected drivingly to the movable drive assembly. The base is adapted to engage a gate valve, or the like. In operation the drive assembly moves along the frame to bring the cutter through the gate valve into selective engagement with a pipe which is to be tapped.

Abstract: A drill may be fed into a workpiece at a rate where the angle descent is less than the primary relief angle of the drill and wherein the extruding action takes place in 1/3 or less of the drill diameter. Unachieved rates of drill feed speed with high precision may be achieved without punching or crushing the material of the workpiece. In order to accomplish such drilling rates an improved feed mechanism, utilizing a positively driven lead screw is employed. In addition, in order to utilize the high drilling rate, a multiple bank of spindles is devised having an X-Y adjustable configuration used in combination with a worktable translated by a lead screw and nut combination. The lead screw of the worktable is disposed within the worktable in the proximity of the axis of symmetry to the worktable in order to minimize twisting moments to the worktable.

Abstract: Manually operable tool means includes a frame formed at one side with an apertured work piece holder, and at an opposite side with an internally threaded shaft housing in which is adjustably mounted tool supporting means and a tool element. The tool element in the form of a drill, for example, while engaged with a work piece supported in the holder is turned by means of a spring loaded handle. The tool supporting means consists in a tubular adapter sleeve which is in threaded engagement with the internally threaded housing, and which is provided with a pressure-transmitting collar against which the handle engages. The tool shaft is rotatably mounted in the adapter sleeve and has the tool element detachably secured at one end. A range of pressures may be exerted through the tool element while cutting by varying the angular position of the handle against the collar as the tool is manually turned.

Abstract: Apparatus for heavy duty tapping operations includes a compact, lightweight, hydraulic tool unit and a remote hydraulic power unit, with the entire apparatus being designed for portability. The tool unit includes an elongated housing having a high torque, low speed hydraulic motor with internal reduction gearing, for directly driving a spindle supported in the housing for rotation and longitudinal movement. The spindle includes a lead screw coacting with a lead nut mounted at the spindle end of the housing. The spindle is directly driven by the motor drive shaft through a spline drive coupling; and the spindle is fully supported by the lead nut and drive coupling. Reversing and stop control devices control the tapping and retracting limits of movement of the spindle; and the design provides for minimum damage to the tool unit in the event of failure of the reversing or stop control devices.

Abstract: A tapping apparatus and method is provided whereby a sleeve having at least one annular groove around the circumference thereof and an outwardly extending flange at one end thereof is, during the cutting of an opening in the wall of a conduit, carried by the cutter to a position at which the at least one angular groove is located within the cut opening and is engaged by the conduit material surrounding the opening to maintain the sleeve in a fixed position relative to the conduit, and wherein the outwardly extending flange contacts a portion of the tapping means for maintaining the tapping means in a fixed relationship to the tapped conduit.

Abstract: This application discloses an improved quill feed unit of the type used in automatic or semi-automatic machines for holding and advancing the tool during the machining operation, wherein the rapid advance, feed, and rapid retract movements present in each machine cycle are performed entirely mechanically.Previously, substantially all of such guill feed units have been operated by the use of a hydraulic or pneumatic power, or a combination thereof, i.e., a hydraulic or pneumatic cylinder would advance and retract the tool, while a suitable motor would rotate the tool.Despite efforts to solve them, severe problems were and are still encountered with these units. Problems such as leakage, poor start up, tool breakage and ease of tampering are commonplace.

Abstract: A unit for milling rectangular work members, where a machined fit is required, such as the door facings of a filter unit having a series of doors into an exchange unit, or equipment bases where a pump or turbine is being installed which requires a machined surface and it is necessary to accomplish the cut in place.

Abstract: A quill drive comprising a housing adapted for mounting on machine tools. A quill is slidably mounted in a longitudinal bore in the housing, and is longitudinally positioned by a ball screw. The ball screw is driven for longitudinal positioning of the quill by a variable speed, reversible motor. The quill rotatably supports a spindle for driving various cutting tools. The spindle is advanced longitudinally by the quill and is rotatably driven by a second motor. The quill drive can be used singly or in a multiple arrangement on transfer machines or other automatic equipment. The unique design has fewer parts resulting in a simple reliable, relatively inexpensive device which is compact and easy to use. A relatively simple modification of the gear box converts the quill drive into a drive for tapping threaded holes.