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| Number | Title | Issue Date |
| 4325661 | Drill bit end protectors A cutting end protector is used in securing one of the cutting ends of a double ended drill bit in a drill chuck. The cutting end protector comprises a body portion contoured to mate with the inner surface of the drill chuck and adapted to receive the dri... | 04/20/1982 |
| 4303360 | Power drawfinger system for machine tool spindle A power drawfinger system for selectively locking and releasing a toolholder or arbor in the socket of a power driven machine tool spindle. The system includes a collet device actuated by a power drawbolt using hydraulic means for expanding said device an... | 12/01/1981 |
| 4290720 | Quick self-release and reload tooling device The device is primarily designed to be used with vertical milling machines. This device may also be adapted to any machine tool spindle which uses an internally tapered end to hold the tool holder, collets, etc. etc. Due to the fact that this mechanism fu... | 09/22/1981 |
| 4226562 | Toolholder A toolholder has a shank with a tapered body which is adapted to fit into a complementary socket in an end face of a machine tool spindle. A blind bore in the body is engageable by holding means for holding the shank in the socket. A first axial section o... | 10/07/1980 |
| 4213723 | Thread cutting die stock A thread cutting die stock with a die stock head structure which has a first inner guiding surface for detachably receiving the shank of a first cutting head while radially inwardly of the aforementioned first guiding surface there is detachably arranged ... | 07/22/1980 |
| 4199286 | Power drawbolt with planetary drive A Drawbolt is rotatably mounted within the spindle of a machine tool to secure a toolholder to a socket in the front end of the spindle. First and second spur gears are formed on the rear end of the spindle and drawbolt, respectively, and are positioned s... | 04/22/1980 |
| 4197044 | Chuck assembly and collet A chuck assembly and collet for retaining an end mill tool against axial pullout. The collet includes a radially compressible body having a tapered outer surface, a central bore and a radial aperture extending from the outer surface into the central bore.... | 04/08/1980 |
| 4175898 | Tool changing apparatus An apparatus for power assisted locking and unlocking of cutting, grinding, or like tools received within the tool holder of a machine such as a vertical milling machine or the like. The described machine includes a spindle and a quill, and the tool is re... | 11/27/1979 |
| 4172683 | Machine tool having drawbar mechanism There is disclosed a machine tool, of the type having a tool magazine for receiving tools therein, and wherein a spindle head is moved in the direction of the axis of a spindle relative to the tool magazine such that one of the tools in the tool magazine ... | 10/30/1979 |
| 4148246 | High speed spindle and draw bar assembly A machine tool high speed spindle assembly and draw bar assembly, wherein the spindle assembly includes a hollow, rotary spindle shaft, and the draw bar assembly is nonrotational relative to the spindle shaft. The draw bar assembly is axially movable with... | 04/10/1979 |
| 4135848 | Toolholder clamp for machine tools A pair of gripper jaws are pivotally mounted on a machine tool spindle within a central bore that opens into the toolholder socket on the outer end of the spindle. The gripper jaws have serrated outer ends that extend into the toolholder socket in positio... | 01/23/1979 |
| 4131054 | High speed spindle and draw bar assembly A machine tool high speed spindle assembly and draw bar assembly, wherein the spindle assembly includes a hollow, rotary spindle shaft, and the draw bar assembly is nonrotational relative to the spindle shaft. The draw bar assembly is axially movable with... | 12/26/1978 |
| 4122755 | Self-locking chuck A tool holding assembly wherein a self-locking chuck or tool holder is releasably secured in a rotary spindle by a draw bar and collet type tool holder gripping means. The self-locking chuck is provided with a spring-biased, ball locking means that functi... | 10/31/1978 |
| 4116579 | End mill tool holder body and tool An end mill tool holder body and a tool suitable for use in a boring mill or any other metal-cutting machine. The tool has a round body with shank to suit the machine tool and a flat, laterally-disposed surface at one end of the body terminating in a shou... | 09/26/1978 |
| 4115018 | Sleeve plug for attachment to a spindle head A quickly attachable and releasable assembly for attachment to a spindle head includes a plug casing insertable into the spindle head, a stop nut thereon, and two bushings loosely connected to the nut. One bushing carries a plurality of locking balls and ... | 09/19/1978 |
| 4076444 | Drill bit extension The drill bit extension which utilized a length of conventional pipe or thin wall conduit without modification. A chuck adapter fitting and a drill bit adapter fitting are located at opposite ends of the pipe. Both have a pilot portion adapted to extend i... | 02/28/1978 |
| 4047830 | Drilling tool A drilling tool, particularly for working metals, in which a tool holder is provided at its frontal or end surface with a receiving slot which is open on three sides and in which an interchangeable blade type drill bit is fastened. A bar-shaped adapter is... | 09/13/1977 |
| 4040765 | Reamer A reamer having a tool shank and a detachable reamer head in which the shank is provided at one end with means to be engaged by the spindle of a machine tool and at the other with a sleeve defining a conical socket and the reamer head has an integral coni... | 08/09/1977 |
| 4020537 | Head-stock for a milling and boring machine This invention relates to a head-stock for a milling and boring machine, comprising a body in which a boring spindle and a milling sleeve or spindle arranged around the boring spindle are mounted to rotate, wherein a tubular member is mounted to rotate ar... | 05/03/1977 |
| 4011791 | Tool chucking device A chucking device comprising an axially displaceable draw-in bar mounted inside a hollow tool spindle and carrying a coupling head which is adapted to positively engage the tool shank. The tool in such a device is chucked by inserting it into the socket i... | 03/15/1977 |
| 4006996 | Positively driven tool holder for a high speed rotatable spindle A tool holder for easy and quick insertion in and removable from a high speed spindle of a machine tool. The tool holder is positively driven by the spindle by means of a quickly engagable and disengagable clutch. A drive adapter is insertable in the bore... | 02/08/1977 |
| 3973784 | Cutting tool adaptor An adaptor for a hand-operated power machine tool, such as a power screwdriver, comprises a sleeve adapted to receive a cutting tool bit in the forward end and an aperture for slidably engaging the shank of the screwdriver bit in the rearward end. The sle... | 08/10/1976 |
| 3970407 | Rotary cutter A rotary cutter is disclosed herein having a hollow body adapted to be mounted on to the chuck of a power driven device such as a hand drill or the like. Within the hollow of the body, there is a metallic and magnetic member formed with a central slot or ... | 07/20/1976 |
| 3967830 | Adjustable tension and/or compression tap holder An adjustable tension and/or compression tap holder includes a shank adapted for rotative drive and longitudinal feed and mounting a drive socket at one end. A cylindrical carrier slidably nested within said socket and has a series of drive slots which re... | 07/06/1976 |
| 3955471 | Machine tool spindle A machine tool includes a head which supports a vertically movable quill within which there is disposed a rotatable spindle to which various kinds of cutting tools may be attached. Within the quill there is provided a spring-biased annular piston for oper... | 05/11/1976 |
| 3945752 | Cutting tool holder A cutting tool holder comprising an elongated holder body having a shaft receiving bore extending longitudinally therethrough, an elongated tool mounting shaft adapted to receive at least one cutting tool in a fixed position thereover and means for releas... | 03/23/1976 |
| 3942905 | Trepanning and boring tool A trepanning tool is adapted to receive attachments for performing boring operations on trepanned holes. The attachments interengage with the trepanning unit to establish a boring diameter concentric with, and adjustable with respect to, the trepanned dia... | 03/09/1976 |
