baber/WOPTO huggingface dataset:
Patent GB-1128866-A (GB)
Title: Improvements in observation or photography devices in closed spaces and in particular in bubble chambers
IPC: G21C17/08
Filed: 1966-11-09
Abstract: 1,128,866. Optical apparatus. COMMISSARIAT A L'ENERGIE ATOMIQUE. Nov.9, 1966 [Nov.17, 1965], No. 50242/66. Headings G2A and G2J. Apparatus for viewing or photographing the inside of a closed chamber 1 through a window 3 comprises a first lens system, the front lens 9 of which has a planar front face 10 and an ellipsoidal or paraboloidal rear face 11, a diaphragm 12 in the rear pupil plane 13 of the first lens system and, immediately in front of the diaphragm a lighting system 14 directed towards the window 3 via the lens 9 together with second and third lens systems 15, 23 for relaying an image of the inside of the chamber to an observer, photographic plate or television transmitter, reflections of the lighting system 14 at the surfaces of the lens 9 being stopped by a system of masks 21, 22 located between the lens systems 15, 23. The lighting system 14 may be an annular flash-tube. The masks 21, 22 are formed by placing two photographic plates in the optical system and exposing the plates by operating the flash. As shown the window 3 is a meniscus defined by two partspherical concentric surfaces. The near focus of the rear face 11 of the lens 9 coincides with the common centre of the window surfaces. The diaphragm 12 is positioned at the second focus of an ellipsoidal face 11 or at a relatively great distance from the lens 9 when the face 11 is paraboloidal.
Patent GB-1593775-A (GB)
Title: Phase-shift circuit
IPC: H03H17/08
Filed: 1977-12-02
Abstract: The invention relates to a phase-shifting circuit for providing a signal out of phase by an amount  DELTA  PHI  digitally predetermined with respect to the phase of a reference signal and which can be any function of time or another variable or a constant. The circuit comprises a digital divider receiving an input reference signal and delivering an output signal whose phase is measured by a number detected at the set of outputs of the divider, this number being fed to the input of a digital arithmetic circuit to be therein added to a signal delivered by a binary number generator which determines the phase-shift  DELTA  PHI . The output of the arithmetic circuit is a signal out of phase of an amount  DELTA  PHI  with respect to the signal at the output of the divider circuit.
Patent GB-1112542-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B69/32
Filed: 1965-11-26
Abstract: In a sewing machine a resilient bushing is provided intermediate a pivoted drive member and the support on which it pivots or in which it oscillates to reduce noise.  The needle bar is reciprocated by a pivoted lever connected to the crank shaft. A resilient bushing fixed to the lever engages the pivot shaft. The looper and feed bar are driven from the crank shaft by linkage including pivoted members fixed to shafts mounted in supports having resilient bushings.  The bushing comprises outer and inner metal sleeves and an intermediate rubber sleeve.  The inner metal sleeve has a helical groove on its inner surface and cross-cuts at the ends to permit flow of lubricant. The top of the presser bar is received by a coil spring the tension of which can be regulated by a screwed rod bearing against it.
Patent GB-1518730-A (GB)
Title: Method for making a steering wheel
IPC: B62D1/06
Filed: 1976-12-03
Abstract: 1518730 Steering wheels FORD MOTOR CO Ltd 3 Dec 1976 [19 Dec 1975] 50421/76 Heading B7J The subjectmatter of the Specification is identical with that of Specification 1,518,729 but the claims are directed to a method of making the steering wheel by forming the rim core by winding a metal member into a helix and securing the spokes thereto.
Patent GB-1115481-A (GB)
Title: Improvements in or relating to electron image intensifier tubes
Inventor: MCGEE JAMES DWYER
IPC: H01J31/50
Filed: 1964-12-12
Abstract: 1,115,481. Image intensifier tubes; discharging static electricity from envelopes thereof. NATIONAL RESEARCH DEVELOPMENT CORPORATION. 8 Dec., 1965 [12 Dec., 1964], No.50663/64. Headings HID and H1X. An image intensifier tube in which the output window, e.g. a mica Lenard window, is at earth potential while the input window is at high negative potential has the input window provided with a light transparent cover-plate of high resistivity insulating material, e.g. silica, to reduce leakage current and consequent corona discharge at the input window. To further reduce these effects the tube, e.g. of soda glass, may be surrounded by an outer casing of insulating material and the space between tube and casing filled with insulating encapsulating material. In addition, the silica plate may have a marginal coating of metal or graphite, may be surrounded by an opaque projecting mask or hood and may have affixed to it a radio-active foil, e.g. strontium-90, to produce ionization of the air in its immediate neighbourhood. The negative high tension line to the photo-cathode on the input window extends the length of the tube between the tube and the casing.
Patent GB-1083098-A (GB)
Title: Ball-bearing rotary joint for pipelines
IPC: F16L27/08
Filed: 1965-11-30
Abstract: 1,083,098. Pipe joints. H. KREIDEL and H. KREIDEL Jun. Nov. 30, 1965 [Dec. 1, 1964], No. 50761/65. Heading F2G. The ball-bearing rotary joint of the parent Specification is modified by arranging that the plunger 28 is freely slidable in the bore 16 and is urged towards the face 30 by a coil spring 25 guided in a groove which is open to the bore. The spring bears against a hard washer 26 to cause a soft washer 27 to bear against the bottom of the groove and against the wall of the bore. A further annular felt washer 34 is provided in a recess 32.
Patent GB-1142826-A (GB)
Title: Apparatus for cutting a web
IPC: B26D1/20
Filed: 1967-11-08
Abstract: 1,142,826. Cutting webs. STEWART-WARNER CORP. 8 Nov., 1967 [8 Nov., 19661, No.50866/67. Heading B4B. Apparatus for cutting a web transversely of a web path comprises first and second blades defining a web region between them, and operating means arranged to effect relative movement between the blades whereby a point of cutting intersection of the blades moves across the web region in a cutting stroke, in which during said cutting stroke, the second blade moves with a generally longitudinal component of movement across the web region, whereby the uncut part of the web tends to be moved towards the point of intersection. In the form shown, the apparatus is applied to cutting a moist paper web 24, Fig. 1, fed from a facsimile machine 10 in the direction of arrow 26. The web is fed between a roller 28, driven by an electric motor 30, and an idler roller 32 and is cut transversely between fixed and movable cutter blades 92 and 133 respectively. The movable blade is carried by a pair of pivot arms 138 and 140, Fig. 4, each connected at one end 150 or 134 to a vertical support plate 44 and its other end 162 or 148 to a blade support arm 132. The pivot arm 138 moves from a generally horizontal position to a generally vertical position and the pivot arm 140 moves from a generally vertical position to a generally horizontal position. The end 162 of the arm 138 is also connected to one end of a crank arm 166 the other end of which is connected at 172 to an arm 174 driven by a motor (170), Fig. 2 (not shown). The upper end 196 of the cutting edge 136 of the blade 133 contacts a plate 186 adjustably secured to the support plate 44. The fixed blade 92 is part of a U-shaped cutter assembly 82 which is pivotable about bolts 98, 100 and is urged to the left, Fig. 1, by a spring 104. The angular position of the blade 92 is adjustable by means of an eccentricallymounted cam 128, Fig. 5, abutting a slide 118.
Patent GB-1461429-A (GB)
Title: Fluid operated clutch
IPC: F16D25/0638
Filed: 1974-11-25
Abstract: 1461429 Clutch control; friction clutches DANA CORP 25 Nov 1974 [28 Feb 1974] 51024/74 Headings F2C and F2L A control for a friction clutch between an engine 11 and a gear-box of a motor vehicle comprises a pressure regulating valve 43 which increases clutch engaging pressure in accordance with both engine speed and engine load. Friction clutch.-A multi-plate clutch 17, 20 between a driving flywheel 14 and a driven hub 18 is engaged by supplying pressure liquid through ducts 34, 35, 36 to a clutch engaging servo piston 21. Cooling and lubricating oil is supplied to the clutch plates 17, 20 through ducts 29, 31. Oil in a shroud 38 fast with the flywheel 14 impinges upon a pilot tube 39 to develop a pressure therein responsive to engine speed. Clutch control.-An engine driven gear pump 23 supplies pressure liquid through ducts 26, 63, 33 to the ditch engaging servo piston 21 at a pressure determined by the regulating valve 43. The valve 43 is biased by a spring 56 to an open position in which the pressure liquid supply passes through the valve 43 and lines 62, 29 to cool and lubricate the clutch plate 17. The valve 43 is moved right against the bias of the spring 56 to increase clutch engaging pressure by the engine speed responsive pressure developed in the pitot tube 39 acting on a plunger 47 and by a plunger 46 which, as shown, is biased right by a spring 46 and moved left by engine manifold depression acting on a diaphragm 44. The regulating valve 43 is thus moved right as engine speed increases and engine manifold depression decreases. For diesel engines the plunger 46 is actuated directly by the engine throttle pedal. The clutch may be disengaged during ratio shift in the following change speed gear by a solenoid operated valve 48 which simultaneously vents both the clutch engaging line 33 and the clutch lubricating line 29. The engine speed responsive pressure may be limited to a maximum value by a relief valve 51.
Patent GB-1524108-A (GB)
Title: Rotor for fluid flow machine
IPC: F01D5/06
Filed: 1976-12-09
Abstract: 1524108 Bladed rotors for axial-flow machines MOTOREN UND TURBINEN UNION MUNCHEN GmbH 9 Dec 1976 [12 Dec 1975] 51553/76 Heading F1T A rotor for a fluid-flow machine such as an axial-flow compressor comprises a series of rotor discs 1, 2 each carrying a row of blades 8, 9 at its periphery, each blade being formed with a platform portion 6, 7, the rotor discs being axially spaced apart and being inter-connected by intermediate rings. The intermediate ring comprises an inner portion 4 which is secured by welding to adjacent rotor discs 1, 2 and an outer member 5 disconnectably mounted on the inner member 4 for rotation therewith, the outer member comprising a plurality of part-annular segments which are individually detectable from the inner member 4 and which co-operate with the platforms of the rotor blades on the adjacent rotor discs so as to define the inner wall of the flow duct of the machine. The detectable connection between the part-annular members 5 and the inner member 4 may be similar to the mounting of the rotor blades on the discs e.g. by fir-tree, hammerhead or dovetail type mounting. The object of the invention is to facilitate removal and replacement of a damaged blade without complete disassembly of the rotor. Specification 1395957 is referred to.
Patent GB-1306759-A (GB)
Title: Cutting tools and cutting inserts
IPC: B23D43/04
Filed: 1971-11-05
Abstract: 1306759 Broaches GENERAL ELECTRIC CO 5 Nov 1971 [7 Dec 1970] 51617/71 Heading B3L A cutting tool comprises a holder body 2 with grooves 3, projections 6 in the grooves at insert-receiving locations disposable cutting inserts 4 releasably held at said insert-receiving locations, the inserts containing a recess therein straddling said projections to laterally locate said insert, and wedge members 5 positioned adjacent said inserts for releasably holding said inserts. The projections 6 are cylindrical and are push-fits in holes 12 in the holder body 2 and each have a screw 11 therein to enable removal of the projections. Wedges 5 are adjustable by a differential screws 7 threaded in different directions at their upper and lower portions. The cutting inserts are not aligned axially of the body which is semicylindrical in cross-section. The recesses, in the inserts may be of dovetail shape.
Patent GB-1048550-A (GB)
Title: Improvements relating to magnetic recording systems, and buffer systems using such recording systems
IPC: G11B15/34
Filed: 1964-12-21
Abstract: 1,048,550. Electric digital data-storage; feeding magnetic tapes. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 21, 1964 [Dec. 23, 1963], No. 51758/64. Headings G4C and G5R. In a magnetic recording arrangement, digital data transmitted serially by character and parallel by bit is recorded on magnetic tape, the parallel bits of each character being recorded simultaneously along the length of the tape while the tape is stationary. Data from a keyboard is transmitted to a printer, card punch or computer via a high-speed transmission link with a buffer at each end, each buffer being an arrangement as above. After each character from the keyboard is recorded in the first buffer, it is read off as the tape is advanced to the next character position to actuate a serial printer which enables the keyboard operator to detect (and correct) errors. After a block of characters has been recorded with slow step-by-step tape advance as above, the tape is rewound and then driven forward continuously at high speed, feeding the data over the link to the second buffer. This is followed by the return of a parity character for checking purposes. Detection of a parity error results in retransmission. Further details of magnetic recording arrangement.-The tape passes between two reels, being held in contact with two arcs of a sprocket wheel and moved past a multiple gap head assembly (similar to that in Specification 963,127 which is referred to) by six idler rollers, one being spring-loaded and one adjustable. A solenoidoperated detent pin is provided for the sprocket wheel. Forward - reverse (solenoid - operated) and speed-change (manual) levers are mounted by means of a common cantilever spring. High-speed erasure may be accomplished by an erase key at fast speed. The gain of the read amplifier is automatically reduced in fast mode to reduce pulse distortion. During slow mode, the read amplifier is coupled to the serial printer via a relay having a built-in delay to allow amplifier transients to dissipate. A gap relay is provided to automatically produce a gap of 10 characters after a block of 150 characters has been recorded.
Patent GB-1483734-A (GB)
Title: Method and apparatus for producing a punch and die set
IPC: B23H9/12
Filed: 1974-10-31
Abstract: 1483734 Making punch and die sets; electroerosion; punching LUCAS ELECTRICAL Ltd 31 Oct 1974 [9 Nov 1973] 52020/73 Headings B3A B3V and B3W A method of producing punch and die components of a punch and die set comprises machining one of the components of the set with a required profile and at least two location holes, machining an electrode 18, Fig. 1, with an identically shaped profile to that of the component with at least two location holes, mounting the electrode on a platen 11 of a jig machining at least two location holes in a metal block 20 and mounting the block on an oppositely disposed platen 10, and spark eroding the metal block with the electrode as a cathode to the anode of the block to form a complementary component of the set. The electrode and component, e.g. a die, are machined using a copper wire spark erosion cutter controlled by a numerical control system programmed to reproduce a given profile in a plurality of blanks. Locating holes 19, 23 are machined respectively in the electrode and block for receiving dowels 16a, 14a which can be located in holes 15a, 13 of the platens. The electrode can also be clamped by clamps 17. The punch component 20 is spark eroded from the block as the platen 10 is lowered. Respective bolsters 70, 74, Fig. 3, for the die and punch are then accurately machined, using a numerical control system, with locating holes and pillar guide holes. The die bolster is then rigidly mounted on pillars 32 of a forming machine and the punch bolster is slidably mounted on the pillars. Both bolsters are mounted on respective platens 30, 31 of the machine. In operation, a metal blank 57 is trapped between a hold-down 51 and the die 33 upon downward movement of the punches 41,42 mounted on the upper platen. After punching the blank at a postion (A), Fig. 4 (not shown), the blank is moved to a position (B). Alternatively, metal strip may be punched sequentially upon passing between guides 60 disposed on platen 30.
Patent GB-1510202-A (GB)
Title: Method of producing mop heads
IPC: A47L13/24
Filed: 1975-03-27
Abstract: 1510202 Mops MILLIKEN RESEARCH CORP 27 March 1975 [14 Nov 1974] 52060/77 Heading A4F The subject-matter is the same as in the Parent Specification but the claims relate to the method of making the mop.
Patent GB-1096586-A (GB)
Title: Improvements in or relating to methods of operating a propeller with adjustable pitch blades and device for practising such methods
Inventor: LINDAHL CARL AXEL
IPC: B63H3/00
Filed: 1964-12-23
Abstract: 1,096,586. Variable pitch propellers. KARLSTADS MEKANISKA WERKSTAD A.B. Dec. 23, 1964, No. 52240/64. Heading B7V. The pitch angle of each adjustable blade 3, Fig. 5, of a rotating propeller is periodically varied, in relation to the angle of rotation of the propeller shaft 1 and during each revolution of the shaft at least one blade is always supplying some of the power for the devices which vary the pitch. In the propeller hub 2, each blade 3 is carried by a turning pivot or dowel 4 which by known means, not shown, is connected to a piston rod 26d belonging to the mechanism for periodical variation of the pitch angle. The mechanism, shown also in Fig. 6, includes a circular ring 11, adjustable to any desired eccentricity, arranged around the propeller shaft 1 and perpendicular to it. Ring 11 is prevented from rotation by a dowel 15 and its eccentricity is adjusted by two pairs of hydraulic piston and cylinder mechanisms 12 and 13. A number of sliding blocks 22, one for each propeller blade, run in groove 21 round ring 11 and each block is connected to a piston 24c of hydraulic cylinder 24 located in the propeller shaft. Hydraulic chambers 24a, 24b are respectively connected to hydraulic chambers 26a, 26b in the hub. As the propeller rotates the sliding blocks 22 run round the groove 21 and in each case the movement of piston 24c is communicated to piston 26c and thus varies the pitch angle of blade 3 via the connecting link from piston rod 26d. At any given time some propeller blades tend to turn in the same direction as that which the governing mechanism determines whilst others at that moment tend to do the opposite. A continuous exchange of power is thus effected between them so that only insignificant external power is required for the periodical variation of the pitch angle. The mean value of this pitch angle is determined by the zero position of valve slide 31 radially movable in control valve 29 which acts as return gear between hydraulic mechanisms 24 and 26, so that if leakage of pressure fluid occurs piston 26c takes the correct position from the position of piston 24c in the governing mechanism of each blade. In a modification, the propeller blades are connected to the sliding blocks 22 by mechanical link mechanism. In another modification, the ring 11 is placed concentrically around the axis of the propeller shaft and inclined thereto, the blocks acting on the ring in an axial direction.
Patent GB-1405816-A (GB)
Title: Synthetic resin compositions based on post-chlorinated polyvinyl  chloride and articles moulded therefrom
IPC: C08L27/24
Filed: 1973-11-12
Abstract: 1405816 Chlorinated polyvinyl chloride compositions SOLVAY & CIE 12 Nov 1973 [13 Nov 1972] 52386/73 Heading C3P A composition contains 100 parts of postchlorinated polyvinyl chloride, 5 to 50 parts of methyl methacrylate / butadiene / styrene terpolymer and 0-1 to 5 parts of an acrylic resin formed from one or more vinyl-aromatic monomers, one or more alkyl methacrylate monomers and one or more alkyl acrylate monomers. The acrylic resin may be formed by first polymerizing the alkyl acrylate and subsequently graft polymerizing the other monomers on to the polyalkyl acrylate. In examples, the acrylic resin was a styrene/methyl methacrylate/ butyl acrylate terpolymer. The compositions are suitable for moulding and extrusion.
Patent GB-1135578-A (GB)
Title: Improvements in or relating to gyratory crushers
Inventor: SYMONS LOREN GLENN
IPC: B02C2/04
Filed: 1965-12-09
Abstract: 1,135,578. Gyratory crushers. NORDBERG MFG. CO. 9 Dec., 1965, No.52394/65. Addition to 952,432. Heading B2A. The gyratory crusher described in the parent specification, comprising a bowl liner 140 having a ledge 142 at the top divided into locking surfaces 156, is modified 'by providing a lower surface of the ledge which, at any cross-section along the length of a step of the projecting ledge, extends horizontally. The direction of the helix of each surface 156 relative to the direction of rotation of the crushing head is such that the liner tends to tighten itself on the crowned surfaces 148 of the wedges 146.
Patent GB-1379319-A (GB)
Title: Preparation of cyano compounds
Filed: 1972-11-14
Abstract: 1379319 1,4-Dicyanobutenes; 1,2,4-tricyanobutane HALCON INTERNATIONAL Inc 14 Nov 1972 [15 Nov 1971 31 Aug 1972 6 Sept 1972 16 Oct 1972] 52541/72 Heading C2C 1,4-Dicyanobutenes are produced by (1) isomerizing 2-methylene glutaronitrile in the presence of hydrogen cyanide or a precursor thereof, (2) reacting 2-methylene glutaronitrile with hydrogen cyanide to form 1,2,4-tricyanobutane and dehydrocyanating this product, or (3) dehydrocyanating 1,2,4-tricyanobutane. 2-Methylene glutaronitrile may be produced by the dimerization of acrylonitrile.
Patent GB-1240577-A (GB)
Title: Process for the production of anodised aluminium lithographic printing plates
Inventor: RAYMOND ARCHIE
IPC: C23F1/20
Filed: 1969-10-27
Abstract: 1,240,577. Anodized aluminium printing plates; cleaning Al. NAMEPLATES & DIALS PTY, Ltd. Oct.27, 1969, No. 52597/69. Headings C7B and C7E. [Also in Division G2] An anodized Al lithographic printing plate is produced by (A) cleaning and etching the plate in an aqueous solution containing 1À5-10% w/v of an alkali metal hydroxide e. g. NaOH, with or without up to 10% w/v of a nitrate or fluoride e. g. NaNO 3 , and/or a wetting agent, at 100-180‹ F. for ¢-10 minutes; (B) etching in an aqueous solution containing 1-10% w/v of an inorganic fluoride e.g. ammonium bifluoride, with or without up to 10% v/v of an inorganic acid e. g. HNO 3  or HF, and/or a wetting agent, at a temperature up to 160‹ F. for ¢-10 minutes; (C) anodizing the etched plate in an aqueous electrolyte containing 3-20% v/v H 2 SO 4  and/or H 3 PO 4  at 65-85‹F., a current density 8-12 A.S. F. and for 5-30 minutes; and (D) treating, e. g. partially sealing or impregnating, the anodized plate with an aqueous solution containing 0À01-5% w/v of an inorganic dichromate or silicate, e.g. K 2  Cr 2  O 7  or Na 2  SiO 3 , at a temperature from 55‹ F. to boiling point for ¢-20 minutes. For treating with a silicate solution, the anodized plate may be simply immersed in the solution at 160-212‹F., or as an anode in the solution at room temperature and applying a voltage of 12-20 volts. After each of steps (A) and (B), the plate may be rinsed and desmutted in an acid solution. After treatment the plate is prepared for subsequent exposure through a stencil.