Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 4605349 | Spring centering device for tool spindles An elastomeric sleeve is fitted within a spindle bore over a coaxial spring assembly used to actuate a drawbar clamp. The sleeve takes up the radial clearance space normally provided for the spring assembly, so that as the diameter of the spring assembly ... | 08/12/1986 |
| 4604010 | Draw bar type flange mounted tool holder A tool holder for use with a mounting system including a spindle having a central frusto-conical bore and a draw bolt positioned centrally in the upper end of the spindle bore. The tool holder includes a central cylindrical main body portion having an ann... | 08/05/1986 |
| 4604009 | Tool retention mechanism A tool retention mechanism is disclosed for clamping a tool holder knob. An elongate rod member is supported lengthwise in a compartment formed within the center of an elongate housing. A knob clamping assembly is mounted on the outer end of the rod membe... | 08/05/1986 |
| 4604012 | Tool clamping device for a spindle head A tool clamping device used with a machine tool is provided for clamping a tool on a tool spindle. In a bore of the tool spindle, there is axially movably received a guide bush which is formed with a recess for permitting steel balls to retract toward rad... | 08/05/1986 |
| 4599023 | Device for mounting a tool-holder A device for mounting a turning or milling tool-holder on the slide of a machine-tool, wherein a sleeve is mounted for sliding inside the slide body, said sleeve receiving internally a rotary spindle, and being designed to occupy one position in which it ... | 07/08/1986 |
| 4589808 | Power draw bar An automatic draw bar for removably securing machine tools carried by a tool holder within the spindle of a milling machine or the like, in which the tool holder is formed with an internally threaded bore. The spindle is provided with an elongated bore ha... | 05/20/1986 |
| 4586860 | Spindle head for a machine tool A spindle head for a machine tool rotatably carries a tool spindle, which is drivingly connected with an output shaft of a drive motor provided in axial alignment therewith. A drawing bar received in an axial through hole of the tool spindle is urged by m... | 05/06/1986 |
| 4583894 | High speed motorized spindle with tool clamping/unclamping mechanism A high speed motorized spindle is provided with a hollow tool-driving shaft having tool clamping means slidably disposed therein. A piston rod actuates the tool clamping means to slide in one direction to release a tool shank and spring means actuates the... | 04/22/1986 |
| 4580472 | Cutting tool with interchangeable tool head for machine tools A cutting tool assembly comprising a tool holder with a clamping collet and an interchangeable tool insert with a clamping shaft engageable by the clamping collet, matching conical surfaces on the periphery of the tool holder and of the tool insert provid... | 04/08/1986 |
| 4569115 | Method and apparatus for controlling the depth of cut in the radial direction of a rotary cutting tool in a machine tool A method and an apparatus for controlling a radial depth of cut of a rotary cutting tool in a machine tool, in particular in a machining center is disclosed wherein an eccentric mechanism for controlling the radial depth of cut of the tip of the cutting t... | 02/11/1986 |
| 4560310 | Tool holder for boring, milling and the like machine tools A tool holder for boring, milling and the like machine tools has a conical shaft with a support member arranged coaxially on said conical shaft. The conical shaft fits into a conical first receiving bore of the machine tool spindle. The support member has... | 12/24/1985 |
| 4553886 | Spindle headstock A spindle headstock of a multiple-operation machine tool, whose housing accommodates, in a coaxial and rotatable arrangement, a spindle kinematically coupled to a rotary drive, a tie rod carrying members intended for connection to the shank of a boring he... | 11/19/1985 |
| 4548532 | Attachments for fitting tools to spindles An attachment for fitting a tool to a hollow spindle of a machine tool, in a case where a shank portion of the tool has a taper-size smaller than that of a tapered hole of the spindle, comprises a hollow attachment body to be secured to the lower end of a... | 10/22/1985 |
| 4530627 | Pinless router A pinless router comprising a router coupled to a movable support arranged and configured such that it has at least one separable portion which may be decoupled from the remainder of the support, a means for vertically moving the router and the support, a... | 07/23/1985 |
| 4520550 | Robot tool changer An apparatus and method for installing and removing a tool on a chuck connected to a robot arm. The chuck has a mandrel with two parallel flat sides and two protruding flanges. The tool has a tool coupling member which is supported and held against rotati... | 06/04/1985 |
| 4512696 | Draw bar for machine tool A draw bar for collet chucking spindles having an elongated body with a wrench head, a removable spacer positioned adjacent the head and first and second thread sections at the opposite end of the body, the first section being removed when the threads bec... | 04/23/1985 |
| 4511295 | Pneumatic collet release tool A collet release device for rotating the draw bar on a milling machine is disclosed. The device includes a pneumatically-driven impact wrench which can be lowered to engage and drive the draw bar in the desired direction. The structure of the device inclu... | 04/16/1985 |
| 4508476 | Adjustable boring tool A boring tool is disclosed capable of positioning a tool element between a radial cutting position and a radial retracted position out of contact with the finished workpiece bore to avoid tool mark formation on the finished bore during tool withdrawal. Th... | 04/02/1985 |
| 4499800 | Tool holder clamping means A tool holder clamping and unclamping device utilizes a special combination of a Belleville spring biased bolt threading device to actuate a ball detent mechanism to lock a tool holder in the device.... | 02/19/1985 |
| 4480366 | Vertical milling and turning machines A vertical milling and turning machine generally comprises a spindle assembly connected to a drive motor. The spindle assembly comprises a hollow ram provided with a tapered opening at the front end thereof for attaching a turning tool and a hollow spindl... | 11/06/1984 |
| 4456412 | Attachment for a vertical milling machine An attachment for a vertical milling machine or the like provides a drive arrangement which provides for a selective high-torque drive connection, a low-torque yielding drive connection, or a complete disconnect.... | 06/26/1984 |
| 4446588 | Multi-purpose tool The present invention relates to a multi-purpose tool having particular, although not exclusive, use in conjunction with milling machines in which a drawbar is employed to engage and disengage a tool collet wherein the drawbar protrudes above the machine ... | 05/08/1984 |
| 4443020 | Mechanical gripping device for rotating jaw chucks or collet chucks A mechanical gripping device for rotating jaw chucks or collet chucks. With the known gripping devices, rotationally symmetrical parts can be gripped in a rotating jaw chuck or collet chuck either only from the outside or only from the inside. The inventi... | 04/17/1984 |
| 4436464 | Clamping apparatus for a cutter A clamping or chucking apparatus for a shaper cutter for a gear shaping machine, especially a generating shaping machine for fabricating gears, containing an axially to-and-fro movable ram spindle and a shaper cutter holder affixed at one end of the ram s... | 03/13/1984 |
| 4413938 | Spindle motor powered drawbar The spindle of a machine tool has a drawbar disposed therein for threaded engagement into and out of the toolholder inserted into the spindle bore to releaseably secure the toolholder within the spindle. Splined on the rearward end of the drawbar distal f... | 11/08/1983 |
| 4412766 | Apparatus for chucking and releasing of a conical shank of a tool or an additional aggregate on tool machines, in particular drilling and milling machines An apparatus for chucking and releasing a conical shank of a tool or an additional aggregate on tool machines, particularly drilling and milling machines. The apparatus has a hollow spindle which is supported in a spindle housing and has at its lower end ... | 11/01/1983 |
| 4411568 | Collet-type chuck A chuck has a chuck body adapted to be rotated about an axis and formed centered on the axis with a forwardly open tool-receiving seat. A holding element is displaceable axially in the body between a rear holding position securing a tool in the seat and a... | 10/25/1983 |
| 4409721 | Machine tool with automatic tool change function A machine tool with an automatic tool change function wherein a rotatable tool spindle carries a movable key engageable with either of a pair of key-ways formed on a tool. A tool changing arm, serving as a tool support device, friction-rotatably supports ... | 10/18/1983 |
| 4398326 | Collet unclamping mechanism Pressurized hydraulic fluid for energizing the collet unclamping mechanism of a machining center is supplied through a first solenoid valve from an accumulator which is charged by a piston pump. The piston pump is attached to the machining center between ... | 08/16/1983 |
| 4396322 | Contact detecting apparatus A contact detecting apparatus for detecting the contact between a workpiece and a tool in a machine tool which includes a coil mounted on a spindle head and connected to an AC power source for generating an induced current in a looped secondary circuit in... | 08/02/1983 |
| 4382730 | Pneumatically operated spindle wrench A pneumatically powered spindle wrench is disposed and engaged atop the upper terminus of the powered vertical spindle of the vertical milling machine. The powered spindle wrench has a socket shaped and sized to engage the drawbar of the upper spindle ter... | 05/10/1983 |
| 4356621 | Machine tool with automatic tool change In a machine tool with an automatic tool change function, a rotatable tool spindle carries a movable key engageable with a key-way formed on a tool. A tool changing arm, serving as a tool support device, friction-rotatably supports at least one tool for s... | 11/02/1982 |
| 4352612 | Tool fastening device A tool fastening device comprises a drawbar (21, 22; 47, 48) for clamping a tool holder (10; 40) to a spindle (11; 41) of a machine tool by frictional engagement with a conical bore therein. The drawbar is connected to the tool holder by radially expansib... | 10/05/1982 |
| 4347753 | Mechanism for operating a collet chuck In a draw-bar mechanism for moving the collet of a chuck or the like on a spindle of an automatic turning machine toward its axial clamping position and for thereafter closing the collet more slowly with greater force about a tool or workpiece to be clamp... | 09/07/1982 |
| 4334811 | Spindle extension, especially for drilling and milling machines A spindle extension, especially for drilling and milling machines, is required when machining large size workpieces. In order to enable the automatic tool change also when there is mounted the spindle extension with the available tools, the inventive spin... | 06/15/1982 |
| 4304513 | Milling machine including improved tool knock-out means A milling machine includes a C-shaped frame, tool support member movable in a vertical direction, a saddle member movable in a transverse direction, a work table movable in a longitudinal direction, a tool drive unit, a tool knock-out assembly and two opp... | 12/08/1981 |
| 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 |
| 4281447 | Detachable tool interface system for a robot A mechanical system for allowing removable attachment of tools to a robot which is capable of accommodating positional and angular errors between the tool and the robot during attachment and release of the tool by using tapered attachments.... | 08/04/1981 |
| 4242019 | Milling machine A milling machine includes a C-shaped frame, tool support member movable in a vertical direction, a saddle member movable in a transverse direction, a work table movable in a longitudinal direction, a tool drive unit and two oppositely positioned and remo... | 12/30/1980 |
