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4558541 |
Ice skate sharpening method
A machine for sharpening the blade of an ice skate has a vertically mounted, thin grinding wheel with a convex transverse cross-section corresponding to the concave transverse cross-section desired...
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4541758 |
Means and method for lubricating core drills
The present invention includes an insert securably mountable within the chamber of a core drill, such as a chamfering diamond core drill used for drilling and chamfering glass articles. The insert...
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4539777 |
Machining in-process gage calibration from reference master
A system and method for controlling operation of a machine tool such as a grinder wherein engagement of the machine tool with a workpiece is controlled in real time by a workpiece measurement...
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4525239 |
Extrinsic gettering of GaAs wafers for MESFETS and integrated circuits
A method is disclosed for extrinsically gettering imperfections in a semi-insulating GaAs wafer. This is accomplished by subjecting the semi-insulating GaAs wafers to processing conditions which...
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4525403 |
Stabilized pile article, production and use thereof for the treatment of surfaces
Stabilized pile articles, characterized in that the stabilizing has been carried out on the upper surface by means of latices, dispersions and/or resins or by a heat treatment, a process for its...
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4521877 |
Reproducing stylus and method of making same
A reproducing stylus for a record having a sound groove, said stylus formed by removing front and back portions of its contact area with the sound groove to obtain an edge line portion having an...
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4520595 |
Automatic machine tool
The invention relates to an automatic machine tool for machining workpieces, including a number n of workpiece receivers that can be adjusted in angular and/or spatial position and including an...
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4514936 |
Lathe dust enclosure
Method and apparatus for collecting dust and shavings produced by a drum and disc lathe. The apparatus comprises a sealed housing which is adapted to enclose the entire grinding or cutting area of...
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4514937 |
Method for the surface treatment of magnetic recording media
A method and apparatus for burnishing the surface of magnetic recording media, wherein there is relative movement between the surface to be burnished and the abrasive member, and the abrasive...
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4514483 |
Method for preparation of selenium type electrophotographic element in which the substrate is superfinished by vibrating and sliding a grindstone
The present invention provides a method for preparing a selenium type electrophotographic element comprising the steps of processing the surface of an electrically conductive substrate which has a...
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4498361 |
Broach manufacturing method
The broach manufacturing method includes a first turning operation in which the outer diameter of the puller portion, retriever portion and the toothed cutting portion are rough turned to within...
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4490945 |
Stylus manufacturing apparatus and method
A keel-tipped stylus for playback of video information from a disc record is formed on a lapping disc having a spiral signal track on the land between a spiral lapping groove. The respective...
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4489522 |
Method and device for the storage of selected points of a nominal contour line in a projection profile grinder
Method and device for storing selected points of a nominal contour line plotted on the projection screen of a projection profile grinder for the control of the grinding wheel position when a...
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4484412 |
Method and apparatus for cutting hard and brittle material using system for applying vibration in two directions
A method and apparatus for cutting a hard and brittle material using a system for applying vibration in two directions with a strip-shaped flat cutting tool. The material to be cut is caused to...
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4467510 |
Method of conditioning a rotary valve seat
A method of forming concavities in a cast iron valve seat to which lubricating oil may be applied to reduce the abrasion between the valve seat and a handle operated rotary valve that is slidably...
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4449330 |
Resurfacing process and tool for installing catridge-type
A centrifugal pump is quickly and easily fitted with a cartridge-type replacement seal where its impeller shaft emerges from its casing, even though the casing is badly corroded in the region at...
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4450551 |
Keel-tipped stylus, and method and device for making keel-tipped stylus
A keel-tipped stylus has a constricted terminal portion which is mounted on narrow shoulders which is in turn mounted on wide shoulders. The keel-tipped stylus is formed from a V-shaped stylus...
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4446362 |
Workpiece with abraded machine-readable marking therein and method of making
A workpiece having a machine-readable coded marking abraded into the surface thereof. The marking comprises a plurality of related marks, such as bar-code marking, which have substantially...
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4398282 |
Capacitance detection type stylus for grooveless disc records and method for making same
A cylindrical diamond body is shaped to form a truncated conical portion. A conductive layer is deposited on the diamond body extending from the truncated end to the other end of the body. The...
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4387540 |
Method of forming reference flats on styli
A method of forming reference flats on a plurality of styli comprises the step of placing the styli lengthwise in parallel grooves disposed adjacent the surface of a first plate, allowing the top...
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4373991 |
Methods and apparatus for polishing a semiconductor wafer
A semiconductor wafer (31) is placed in a holder (10) and then positioned on a polishing pad (35) in a polishing machine (40). A mechanical force is applied to the holder (10) to cause a...
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4364985 |
Porous sheet
A porous sheet is disclosed that comprises a thin, flexible sheet made of thermoplastic resin having solid particles distributed therein. Small spaces are formed around the particles, such that...
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4348839 |
Method for producing surfaces at a blade cutter head formed of hardened cutter blade steel
A method for producing or forming cutting surfaces at the cutter blade head portion of a cutter blade formed of hardened steel is disclosed. The hardened steel blades, provided with a cutter blade...
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4346577 |
Method for producing curved valve needles
A method is proposed which serves to produce a valve needle of a needle valve. The basis of the method is the production, from a wire serving as the raw material, of a springlike coil on a carrier...
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4343111 |
Ultrasonic machining method and apparatus
An improved ultrasonic machining method and apparatus wherein the vibratory oscillations applied to an ultrasonic machining tool and transmitted to the machining region are periodically interrupted...
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4339894 |
Convoluted shirring wheel
An apparatus for shirring synthetic casings wherein there is superimposed on the customary helical shirring pattern another pattern which will change the folding or shirring pleat pattern of the...
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4337598 |
Endless belt with automatic steering control
Automatic tracking of an endless belt, such as a coated abrasive belt, is provided by fitting the belt with at least one permanent magnet, preferably of a flexible, rubber bonded sheet-like variety...
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4328646 |
Method for preparing an abrasive coating
A method for preparing an abrasive coating from silane and an oxygen-containing gaseous compound such as N 2 O, CO 2 , H 2 O and the like is disclosed. The abrasive coating is prepared using the...
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4324073 |
Process for automatic feed of steady jaws
The disclosure relates to a process for the continuous, automatic feed of at least one jaw of a steady for supporting a workpiece, for example a shaft or crank shaft with its axis in the desired...
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4297312 |
Method for preparing stylus lapping discs
An improved method of reproducing a spiral groove pattern in the surface of a plastic disc wherein the intersections of the surface of a metal article generated during the replication process are...
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4292770 |
Yarn heater track cleaning apparatus and method
An apparatus and method for cleaning and polishing the yarn heater track of a yarn processing machine which includes guiding a rotating abrasion wheel along the yarn heater slot to dislodge the...
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4285168 |
Fiber lubricated bearings
A plastic bearing and wear surface is disclosed which has low friction fibers protruding from its surface. The bearing is made by filling a plastic matrix with low friction fibers whose mechanical...
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4276678 |
Ring doffer
A ring doffer is provided for carded web splitting that prevents loading of the card cylinder during operation by employing a circumferential groove therein to effect the web splitting that is cut...
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4260396 |
Compositions for polishing silicon and germanium
A composition for polishing silicon and germanium comprises a synthetic amorphous silica polishing agent and a suspending agent selected from the group consisting of water-soluble...
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4256535 |
Method of polishing a semiconductor wafer
A semiconductor wafer (31) is placed on a non-porous, flat, substrate (10), with a thin layer of water (21) interposed therebetween. The substrate (10) with the wafer (31) thereon is placed in a...
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4249346 |
Mobile rail grinding machine and method
A mobile rail grinding machine comprises a machine frame mounted on the rails of a track for continuously moving in the direction of, and along, the track, a tool carrier frame vertically...
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4243395 |
Method for precision grinding of hard, pointed materials
A method of lapping the sharp point of a hard material using a silicon oxide, glow discharge deposited abrasive layer wherein the abrasive layer is thick enough to prevent penetration of the point...
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4212135 |
Method of adaptive control of a recessing cycle on a grinding machine and apparatus therefor
Method of adaptive control of a recessing cycle on a grinding machine where the roughing is terminated, if the allowance drops to a value determined from the characteristic value derived from the...
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4211042 |
Controlled weld area grinding to prevent the initiation of intergranular corrosion
A method is provided for treating the weld area of a welded ferritic stainless steel article to increase the resistance to intergranular corrosion. This method comprises the step of grinding the...
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4201015 |
Film image removal process and apparatus
Apparatus and a method for removing images which are disposed on a surface of a film section, such as a microfiche card. The apparatus comprises a housing in which a motor-driven, rotary abrasive...
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4196547 |
Cylinder liner honing
It is desirable to provide a relatively coarse finish at one end of an inner cylindrical wall of a cylinder or a cylinder liner and a relatively finer finish towards another end of said inner...
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4194323 |
Centerless grinder
The grinding wheel of a centerless grinder comprises a cylindrical abrasive grinding surface sandwiched between two slightly frustoconical guide surfaces made of a resilient material. The...
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4173850 |
Method for reducing tangential force variation in pneumatic tires
A method and apparatus for reducing tangential force variation in a pneumatic tire wherein the tire is mounted on a wheel rim, inflated to operating pressure, and rotated under a predetermined load...
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4172342 |
Method of forming a ring doffer
A ring doffer is provided for carded web splitting that prevents loading of the card cylinder during operation by employing a circumferential groove therein to effect the web splitting that is cut...
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4167837 |
Method for controlling a grinding wheel-workpiece interface force for a workpiece with diverse grindability characteristics
A method and apparatus are disclosed for grinding a surface upon a workpiece having disparate grindability characteristics. A mechanical cam is used in the preferred embodiment to model the...
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4156327 |
Method for total form machining of metal
The method of abrasion forming friable material such as carbon blocks to form electrical discharge machining electrodes therefrom comprising the steps of moving a master model, having an abrasive...
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4155106 |
Magnetic head using a semiconductor element
A magnetic head having one or more magneto-electric converting elements, such as Hall elements, and comprising plural leads which are used, when the magnetic head is manufactured, for measuring the...
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4150513 |
Method for grinding
A method and apparatus for grinding for use with a grinding machine of the type comprising a circular grinding wheel adapted to rotate about its axis and a spindle adapted to hold a workpiece at a...
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4137674 |
Method of concentric grinding
A holder for use in cutting the outside surface of a cylindrical blank, the inner bottom of which has a concave spherical seat, to make said outside surface concentric with said concave spherical...
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4134763 |
Selenium-base photosensitive materials for electrophotography having super-finished substrate
Selenium-base photosensitive materials for use in electrophotography wherein a photoconductive layer consisting essentially of selenium is formed on a substrate whose surface is made rougher by a...
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