Abstract: The described invention is intended for use primarily in the yacht repair industry and specifically in the repair of fiberglass hulls of yachts. However, its use will not be limited to fiberglass in yachts but fiberglass in general where applicable.The invention removes gelcoat (coating over fiberglass) and/or consecutive layers of fiberglass laminate.The invention is specifically designed to remove osmotically blistered gelcoat and/or fiberglass laminate in an efficient and in an environmentally attractive fashion.The invention "planes" off gelcoat and/or fiberglass laminate duplicating the existing contour of the hull or boat bottom. The cutterhead is continually flushed with water to prevent toxic dust from being released into the air. Interchangeable depth gauges allow change in the depth of the cut. Gelcoat and fiberglass are removed anywhere from a 0 to 1/4 inch depth at a rate of four square feet per five minutes leaving a consistent and fair surface.

Abstract: A portable routering apparatus for use with a hand-held router to rout figures, designs, alphanumeric characters and the like without the requirement of a template for each figure, design, or character, wherein the apparatus is adjustable to accommodate workpieces of variable width and thickness and unlimited length. The apparatus consisting of a base, an adjustable workpiece clamp, a router guide fence, a plurality of indexing scales, and a plurality of guide blocks, wherein a workpiece is positioned on the base and secured with the clamp, and the movement of a hand-held router thereon is guided by the guide fence and blocks and positioned using the indexing scales.

Abstract: A jig or frame with a pair of reference pins adjustably attached thereto so that a pointed bottom of the pin can be positioned in a crack between two pieces of hardwood floor strips. A router is slidably attached to the jig or frame and an adjustable stop is provided for limiting the distance that the router can be moved back and forth. This distance is typically adjusted so that it will move only the width of a hardwood strip and the router is positioned so that the bit thereof can move only from one edge of a hardwood strip to the other edge of the hardwood strip when the reference pins are set in the crack between such hardwood strip and the next adjacent hardwood strip.

Abstract: A portable milling machine is provided for solving in-place machining problems encountered on turbines, pumps, electric motor bases, and other types of field equipment requiring a close tolerance, machined surface prior to installation. Such portable milling machine is set up at a job-site using a plurality of levels in conjunction with an optical leveling kit and a vertical scale magnetically mounted at selective locations on such portable milling machine during set-up. The set-up time for such portable milling machine substantially is cut in half by using levels in conjunction with optics and accuracy may be achieved within 0.001 to 0.002 of an inch.

Abstract: The disclosure involves a portable milling machine for remachining radially directed access bores of interest in large check valves which is readily attached to and removed from the valve and is precisely alignable with respect to the center of the bore to be remachined. The machine is capable or remote operation.

Abstract: A machining system for performing heavy duty milling and other repair operations under water is disclosed herein which is particularly useful in performing repair and maintenance operations in the core barrels of nuclear reactors. The machining system generally comprises a platform, a machining device which is detachably connectable to the platform which includes a drive motor and cutter necessary to effect the repair or maintenance operation, and a triaxial adjustment mechanism which permits the machine cutter to be precisely positioned at any desired location within the core barrel. The platform has a guide mechanism which includes both a rough and a fine guide means which precisely positions the machining device with respect to the platform when it is lowered thereon. A hydraulically operated lock remotely and detachably secures the machining device into position on the platform after the guide mechanism has properly positioned it.

Abstract: A router jig comprising a baseplate having an open interior, a first horizontal guide adjustably attached to the baseplate, a first vertical guide attached to the baseplate, and a clamp adjustably fastened to the baseplate for receiving a workpiece. Both the first horizontal guide and the first vertical guide extend across the open interior of the baseplate. A second horizontal guide is also adjustably attached to the baseplate. This second horizontal guide extends across the open interior of the baseplate and is in adjustable parallel relationship to the first horizontal guide. A second vertical guide is also adjustably attached to the baseplate so as to be in adjustable parallel relationship to the first vertical guide. The clamp includes a first board and a second board that are adjustably fastened to the underside of the baseplate. The clamp includes a suitable adjustment mechanism for fixing the position of the workpiece within the clamp.

Abstract: A simple, low cost, light weight biscuit jointer (21) comprises an elongated motor housing (23), a motor end cap assembly (25) fixed to one end of housing (23) and a base assembly (27) for engagement with a workpiece. To form a biscuit receiving slot in a workpiece, the motor housing (23) and end cap assembly (25) are pivoted relative to base assembly (27) for sweeping a an elongated, generally cylindrical bit (29) through an opening (31) in a base plate (33). The sweeping action is effected by an operator rotating a handle (35) fixed to end cap assembly (25) counterclockwise (FIG. 2) relative to base assembly (27). A handle (37) is used to stabilize base assembly (27) as house assembly (23) is pivoted to form the slot.

Abstract: A machine tool (10,100) particularly a portable machine tool for use in machining or operating on surfaces remote from the drive of the machine tool comprises a base (34,102) attached to a work piece (14,114), a carriage (36,128), tool support means (14,126), and an operating tool (64,144) having a cutting head (80,136). The carriage and operating tool are driven and the axes and carriage of the operating tool are offset so that a cutting tool on the operating tool describes an epicyclic path to mill at least one surface on the work piece.

Abstract: A portable gas operated rotary tool is provided for milling a surface on the end of a cylindrical workpiece. The tool has a motor powered by a pressurized gas, such as compressed air. The motor directly drives a rotary milling head which is axially aligned with the axis of rotation of the motor. The motor has a stator chamber which houses a rotor having radial slots. Vanes are journaled within said slots for radial movement within the slot and define progressively expanding cavities. The milling head has a central bore for mounting on an arbor of the motor. The milling head includes blades for milling a frustonconical surface on the workpiece and means to align the tool with the longitudinal axis of the workpiece.

Abstract: A tool for use in dressing the electrode tips of a welding machine. It is to be used in combination with conventional rotary dressing tools whereby one person can apply sufficient pressure on the tool to properly dress the welding tip. It consists of a clamping device to attach the tool of the invention to an electrode shank, and an adjustable lever arm to apply pressure to the dressing tool against the welding tip.

Abstract: A semi-automatic track drill for use in drilling fastener holes for an aircraft body includes a pair of generally spaced, parallel rails. A plurality of slider bars extend between the rails and are connected thereto in a manner so that each bar can be slid along the length of the rails. Positioned between at least two of the bars is a drill carriage which is also slidably connected to the rails. A template having a series of alternating lands and grooves registers the carriage at preselected drilling positions. The drill assembly, including the template, is secured to the aircraft body by temporary clamping bolts which are positioned in a line along the body's surface.

Abstract: A method for machining an enlarged profiled bore in a workpiece utilizing a numerically controlled machine and particularly a tool comprising a boring bar rotatable and axially displaceable relative to the workpiece. The milling cutter is eccentrically mounted in the boring bar thereby facilitating radial movement of the milling cutter. The milling cutter is adapted to follow a predetermined contour during removal of the boring bar from the workpiece thereby to form a correspondingly profiled bore.

Abstract: A portable milling tool for milling pipes, tubes, cylinders, and the like has an expandable sleeve at one end thereof for securing and centering the tool to a workpiece. An adjustable in-line rod connects the sleeve to the tool and permits the sleeve to release or secure the workpiece. An in-line shaft moves the tool into or out of engagement with the workpiece. The tool also is of compact design allowing it to be used in on-site situations wherein tool size is a problem as in milling boiler tubes.

Abstract: A tool for cutting a slit into the ends of one or more web portions of a membrane wall. A guide bar is secured above the web portions. An arm member is swingably attached to the guide bar. A cutting unit is attached to the distal end of the arm member for engaging and cutting a slit into a web portion of the membrane wall when the arm member is swung between first and second positions.

Abstract: A milling fixture with a manual top spindle molder comprises a base plate upon which a drive assembly is adjustably mounted. The drive assembly includes a drive journal for driving a tool shaft. A bearing block is mounted on the drive assembly and includes a U-shaped member which carries a bearing which is aligned with said drive journal to receive the other end of the tool shaft. The base plate, together with the drive assembly and bearing block is pivotable relative to a workpiece guide on which the workpiece is supported. The bearing block includes a pendulum guide having a copying feeler for engaging the workpiece.

Abstract: A material working tool 10 includes a device for working material 18 and a base 12 for supporting the device 18 for working the material. The base 12 includes a rigid member 26 and a cavity 54 defined in the rigid member 26 which is connected to a source of vacuum. A seal 66 is provided about the bottom surface 56 of the rigid member 26. The seal 66 is compressed as a vacuum is created in the cavity 54 so that the rigid member 26 comes into contact with the surface of the working material allowing for the accurate positioning of the material working tool 10 relative to the material to be worked.

Abstract: A portable tube end preparation tool includes a right angle drive motor (44) for rotating the cutter head (16) and a right angle cutter feed nut drive shaft (78), both motor and feed nut drive shaft capable of being positioned in the same general plane to provide a narrow and short tool profile for enabling the tool to be used in very confined areas. The drive motor and feed nut drive system are mounted in separate sub-assemblies for enabling simple repair and inspection of the tool without complete or substantial disassembly of the tool, and to permit the feed nut drive to be rotated to different radial positions.

Abstract: A tool for grinding irregular surfaces such as transition welds includes a base adapted to rest on the surface of the workpiece, a track on the base and a carriage which moves longitudinally of the weld with one end on the track and the other end of the carriage having a roll which contacts the top of the workpiece. A trolley is supported on the carriage for transverse movement and carries a grinding wheel and its motor. Guide tracks on the carriage cause the grindling wheel to move in a non-linear path. The base is placed in position and the grinding wheel is reciprocated transversely as the carriage reciprocates longitudinally. If the weld is longer than the carriage movement, the base is moved after the grinding is finished at the first position to a second position adjacent thereto and the operation is repeated until the weld is completely ground as desired.

Abstract: The machine for trimming pieces of wood, such as a surfacing, planing or other machine, comprises a rotary tool having a tool holder provided with projecting axially extending blades and adapted to machine at least one surface of the piece of wood. This tool has, on the input side and output side thereof, two driving rollers for driving the pieces of wood. These rolls have axes parallel to the axis of the tool and are connected to rotate with the latter by a speed reducing mechanism. The mechanism employs a sun and planet train one of the sun wheels of which is mounted directly on the shaft of one of the driving rollers. Another sun wheel is freely rotatable on this shaft and is prevented from rotating relative to the frame of the machine.

Abstract: A router is mounted in a resilient support within a housing mounted on the end of a robot arm to permit substantial lateral movement of the router relative to the housing in any radial direction as the router traverses a template; the router being concentrically positioned within the housing in a resilient support positioned midway between the ends of the router.

Abstract: The invention is directed to an improved boring and facing apparatus for performing in-situ machining on nuclear reaction feedwater inlet nozzles. The apparatus comprises a boring machine mounted upon a main frame which main frame is suspended from a structure mounted above the plane in which the inlet nozzle is located. Means are provided for adjusting the boring machine to permit a tool to operate along the center line axis of the inlet nozzle.

Abstract: Apparatus for accurately cutting pits or anomalies in steel pipe or plate stock to be used as a standard for calibrating magnetic flux leakage detection equipment used for testing for anomalies in such stock.

Abstract: A method and apparatus for positioning a boring machine relative to an engine block or the like has a base plate suitable for arrangement upon a deck surface of the block, the plate being formed with openings above each of the cylindrical bores as well as in alignment with threaded passages in the block. Preferably, bolts are threaded into the block to secure the base plate so that, during reboring, the bolts distort the block about the bores in a similar manner as during engine operation. Also preferably, adjustable means are arranged between the base plate and the deck surface of the engine block in order to position the base plate in precise alignment with the main bearing axis of the engine block so that the bores are formed perpendicularly to the main bearing axis.

Abstract: An improved drafting instrument is provided for scribing small dots on a drafting medium comprising a substrate provided with a removable surface coating. The drafting instrument includes a drive motor and rotatable cutter which are slidably mounted as a unit for vertical movement toward and away from the drafting medium. A manually operable actuator is provided for moving the drive motor downward to bring the cutter into engagement with the surface coating of the drafting medium. A control switch responds to downward movement of the drive motor and cutter by a predetermined distance for automatically actuating the drive motor before the cutter is moved into engagement with the drafting medium. The drafting instrument includes an adjustable depth limit feature to control the depth of penetration of the cutter into the surface coating of the drafting medium. The operation of the drive motor and rotation of the cutter are automatically terminated when manual pressure on the actuator is released.

Abstract: The present invention relates to a machining process especially suitable for facilitating the construction of large turbines wherein displaceable guide blades for directing fluid to the rotor have to be provided on the downstream side of the volute or spiral tank of the turbine. Hitherto the whole unit had to be machined and assembled in the workshop and then transported to site.