baber/WOPTO huggingface dataset:
Patent GB-1451799-A (GB)
Title: System for optically reproducing pulse time modulated square waveforms stored along a track carried by an embossed record
IPC: G11B7/13
Filed: 1973-08-22
Abstract: 1451799 Automatic control of position THOMSON-CST 22 Aug 1973 [25 Aug 1972] 39870/73 Heading G3R [Also in Division G5] In an arrangement for optically playing back frequency or phase modulated signals recorded as topographic features 14, which can be projections or depressions, in a track formed in a e.g. transparent disc 1, light from source 5 is focused by object lens 7 on the track to illuminate an area 10 of two photo-cells 12, 13 when a space between features is illuminated and an increased area 11 when the beam is diffracted by a feature 14. The output of the cells is added and amplified 18 to provide the output signal s(t). In addition the output of the cells is connected to a differential amplifier 17 to provide a difference error signal E which via a transducer 8 controls the position of lens 7 to shift the beam to compensate any deviation in track position. The transducer 8 which is supplied with the error signal via a low pass filter 21 is a ceramic electrostrictive bimorph device. In a signal reflection arrangement, Fig. 6 (not shown) the record is non-transparent and can be provided with a reflective coating and the beam is transmitted via a semi-reflector plate which then directs the signals reflected from the record to the pair of photo-cells.
Patent GB-1198549-A (GB)
Title: Silencers.
Inventor: NETHERSOLE ALAN THOMAS
IPC: F01N1/08
Filed: 1967-06-29
Abstract: 1,198,549. Silencing gaseous flow. PAR ACOUSTICS Ltd. Aug.20, 1968 [June 29, 1967], No. 39872/68. Divided out of 1,186,078. Heading F1B. A silencer for an I.C. engine exhaust system or air conditioning ducting comprises an outer casing 1 of uniform square or rectangular crosssection and an element 2 of sound absorbing material and similar cross-section mounted centrally therein to define a passage 10 therebetween. The element 2 is located by a pair of rods 6 secured to the casing 1. One or both of the ends 5 of the element 2 may extend beyond the casing 1. The ends 5 may be of similar or different shapes, e.g. pyramidal, Fig. 2 (not shown), or semi-circular, Fig. 3 (not shown). The casing 1 may be lined with sound absorbing material.
Patent GB-1536948-A (GB)
Title: Means for indicating the profile of a workpiece
IPC: G01B5/20
Filed: 1976-09-25
Abstract: 1536948 Profile plotting ROLLS ROYCE Ltd 22 Sept 1977 [25 Sept 1976] 39925/76 Heading G1M [ Also in Division G3] A machine for indicating the profile of a workpiece 21 comprises a probe 20 which is normally driven along the x-axis at a substantially constant rate and driven along a second axis perpendicular thereto,to alternately make and break contact with the workpiece, the outputs of the motors 14, 18 driving the probe being linked to a co-ordinate plotter 27, see Fig. 3, to provide a representation of the profile of the workpiece being followed, and is provided with a control system which, if the distance traversed by the probe along the second axis after a making but before a breaking of contact, or after a breaking but before a  succeeding making of contact of the probe with the workpiece exceeds a predetermined limit, causes the slowing down or halting of the motor 14 which drives the probe along the x-axis until the succeeding breaking or making of contact occurs, whereupon the constant drive rate of motor 14 is restored. The object of the invention is to ensure that the probe follows the profile to be inspected at an optimum rate, particularly where the profile has steep inclines. Thus, it is possible to follow the profile rapidly over portions having shallow inclines, but desirably slowly over portions having steep inclines.
Patent GB-881436-A (GB)
Title: Butterfly valve
IPC: F16K1/22
Filed: 1958-12-11
Abstract: 881,436. Valves. JEFFERY, H. S., and STOKES CASTINGS Ltd. Nov. 25, 1959 [Dec. 11, 1958], No. 39952/58. Class 135. A butterfly valve disc 4, Fig. 3, is located in a duct 6 the connecting flanges 7 of which provide two oppositely facing semi-circular seats 9 for the edge of the disc 4. The disc 4 is formed of two substantially semi-circular plates 11, Fig. 1, which overlap at their common diameter and are secured together by bolts. Each plate 11 is formed of one or more sections and reinforcing ribs 15 are provided.
Patent GB-1198644-A (GB)
Title: Device for Balancing a Tilting Vessel.
IPC: B28C5/18
Filed: 1967-09-01
Abstract: 1,198,644. Counter balancing. AZIMUT FRANCE. 1 Sept., 1967 [12 Sept., 1966], No. 40145/67. Heading B8B. [Also in Division B1 and B2] A device for balancing a rotatable cement mixer drum or the like 1, so that the angle of the drum ensures that the level of the mix in the drum is always just below the pouring lip irrespective of the quantity of mix in the drum, comprises a calibrated spring arrangement 23 at each side of the drum and coupling a drum supporting frame 4 to a fixed bracket 28 at a point 27 offset from a point 5 at which the frame 4 is pivoted to the bracket 28. The spring arrangement 23 comprises a compression spring mounted in a tubular guide 24 and compressible between the end of the guide adjacent the pivot 5 and the end of a rod 26 which has its other end pivotal to the point 27. A handle 13 integral with the frame 4 and a manual lock catch therefor, facilitate manual movement of the empty drum into a horizontal loading position as shown, the drum rotating anticlockwise about point 5 and automatically releasing the catch as the drum load overcomes the spring force. The drum is rotatably driven by a motor 15 mounted on the frame 4 which is rotatable in a horizontal plane on a ball track on a wheeled drum carrying carriage 9. In the embodiment shown the rod 26 extends along the interior of the guide tube 24 whereas in the embodiment of Fig. 9 (not shown) the rod is external of the guide and a yoke on the end of the rod engages the spring end through longitudinal slots in the guide. In the embodiment of Fig. 10 (not shown) tension springs are used which are connected between the pivot points (27) and the frame (4). In the embodiment of Fig. 11 (not shown) tension springs are used in the same arrangement as in Fig. 1 but the rigid rods are pivoted to the fixed bracket below the pivot of the frame to the brackets. In another embodiment, the two side spring arrangements are replaced by a single central spring arrangement.
Patent GB-1163732-A (GB)
Title: Crimping Yarn
Inventor: MATTINGLY DENIS ALBERT EDWARD
IPC: D02G1/00
Filed: 1965-09-21
Abstract: 1,163,732. Crimping yarn by knitting. KLINGER MFG. CO. Ltd. 14 Sept., 1966 [21 Sept., 1965], No. 40275/65. Headings D1F and D1S. Yarn is crimped by knitting the yarn into a fabric, setting the yarn while the fabric is subjected to a constant tension, and unravelling the set yarn. As described a tubular fabric is knitted from nylon yarn, flattened, passed between two heater plates maintained at 220‹C with steam passing through apertures in the two plates, and passed over a roller spring- urged away from the straight line of travel of the fabric and connected to a micro-switch unit controlling the speed of the fabric into and/or out of the heating zone so as to maintain the fabric tension constant. The yarn is unravelled from the fabric and moved on a package with a photo-cell device maintaining the point of unravelling substantially constant by sensing the position of the point and switching the winding means, which wind the yarn at a speed greater than the yarn is knitted, on and off accordingly. Alternatively the yarn may be knitted on a flat-bed knitting machine.
Patent GB-1079575-A (GB)
Title: Improvements in pressure ratio sensor
IPC: F01D17/08
Filed: 1965-09-22
Abstract: 1,079,575. Measuring fluid flow; pressure gauges. GENERAL ELECTRIC CO. Sept.22, 1965, [Oct.23, 1964], No.40350/65. Headings G1L and G1R. In a pressure ratio sensor, such as for the use with jet engine compressors where fixed inletto-outlet pressures are to be maintained, the gas flow from the compressor outlet is fed to an inlet 6 of a convergent-divergent nozzle 2 and the inlet of the compressor is arranged at the outlet 14 of the nozzle 2 and an axially adjustable hub 4 disposed within the throat 10 of the nozzle 2 is provided with an aperture 16 through which a gas sample under pressure is fed through an aperture 23 to an opening 24 where its pressure is compared with the compressor inlet pressure at outlet 14 of nozzle 2 and the difference between the two pressures is used to actuate means to maintain the compressor inlet and outlet pressures. In an embodiment the tube 4 movement is effected by a rotatable and horizontally movable tapered cam operating on the end of the tube 4.
Patent GB-1164301-A (GB)
Title: Improvements in Injection Moulding.
IPC: B29C31/08
Filed: 1966-09-12
Abstract: 1,164,301. Feeding measured doses to injection moulding machines. TAPSER S.L. 12 Sept., 1966 [13 Sept., 1965], No. 40594/66. Heading B5A. In a method of forming a neck portion 23 on to a preformed body 20, material to be moulded is fed under gravity to an injection chamber 16 in the form of tablets 12 in a magazine 11, one tablet being fed at each injection stroke, each tablet being of a predetermined requisite weight. The tablets are fed downwardly, the lowermost tablet being removed by a window 14 in a slide 13 connected to an hydraulic plunger 2 with a ram 3 thereon. Injection takes place when a headstock 9 engages a stationary mould 22, the headstock being heated, and a core 19 supporting the body 20 being reciprocated by a lever system 21. The tablets comprise thermoplastic material, and the moulded product may be removed on the core or unscrewed from the mould if the workpiece is threaded.
Patent GB-1200369-A (GB)
Title: Improvements in or relating to rotary pumps
IPC: F04C15/06
Filed: 1967-09-07
Abstract: 1,200,369. Rotary pumps. HOBOURN - EATON MFG. CO. Ltd. Sept.7, 1967 [Sept.16, 1966], No.41034/67. Heading F1F. In a rotary pump 10, comprising a drive shaft 13 projecting from the pump housing 11 and connected to rotary pumping means and a cartridge type shaft seal 42 disposed in a seal chamber surrounding the shaft and connected by conduit means to place the seal chamber in communication with the pump inlet to relieve the pressure of hydraulic fluid leaking along the shaft from the pumping means towards the seal chamber, the conduit means comprises an axial shaft passage 50 connected at one end to inlet conduits 27 and at the other end through radial holes 52 with the seal chamber which through passages 47 is connected to grooves 46 forming inlet parts to the pumping means. As described, the pumping means comprises a rotor 15 having a plurality of slots which carry pumping elements 16 such as vanes or rollers which engage the inner cam surface 20 of a cam member 17 sandwiched between end members 25, 3 0 which bearingly support the shaft. A body portion 40 of the member 30 also carries the shaft seal 42 and sealingly engages the housing 11.
Patent GB-1367544-A (GB)
Title: Protective device for impact mill rotors
IPC: B02C13/28
Filed: 1972-09-06
Abstract: 1367544 Impact pulverizers HAZEMAG HARTZERKLEINERUNGS-UND ZEMENTMASCHINENBAU-GmbH 6 Sept 1972 [25 Sept 1971] 41221/72 Addition to 1075726 Heading B2A An impact pulverizer comprises a set of rotor discs 1 axially spaced and secured on a tube 2. Each disc 1 includes slots 3 for beater bars 4. Beams 5 are welded to the discs. Each beam includes a rib which engages a corresponding groove 7 in a beater bar 4. Each corner 8 of the slots at the leading side of the beater bars is protected by a U-shaped cap 9. Each cap comprises arms 10, 11 joined by a web 13. The web is slightly thicker than the height of the rib 6. This permits removal of the beater bar when the cap has been taken off. Each cap is closed on one side by a bored plate 15 and recessed for a screw 17. The disc itself includes threaded bores to receive the screws for fastening the caps in place.
Patent GB-1303800-A (GB)
IPC: H01J31/15
Filed: 1970-04-17
Abstract: 1303800 Cathode-ray tubes SONY CORP 17 April 1970 [17 April 1969) 41334/72 Divided out of 1302582 Heading H1D In an electron discharge device the electron flow from a cathode to a plurality of fluorescent screen portions is controlled by electrodes arranged on either side of the screen portions. The number indicator tube shown in Fig. 4 comprises seven luminescent anodes A1-A7, the electron flow to which is controlled by a number of fork-shaped electrodes GA, one for each display area, and rod electrodes GB1- GB5 which are arranged between the tines GA1-GA6 of each fork. A particular area glows only if the anode A and the overlying electrodes GA and GB are all positive, and in operation the group of electrodes GA is pulsed positive, the electrodes GB are pulsed in turn to provide in effect a horizontal scan, and the electrodes A are selectively energized according to the display required (e.g. the number 2 in Fig. 12). Another arrangement comprises parallel electrodes connected together and insulatingly supported from a conductive plate on which fluorescent material is disposed in the gaps between electrodes (Fig. 6, not shown).
Patent GB-1127810-A (GB)
Title: Step by step electromagnetic switch
IPC: H01H51/18
Filed: 1966-09-16
Abstract: 1,127,810. Sequence operation electromagnetic switches. CHRISTOPH EMMERICH K.G. 16 Sept., 1966 [16 Sept., 1965], No. 41417/66. Heading HIN. A step-by-set electromagnetic switch has a plunger armature 3 carrying a pin 4 movable between two toothed tracks 5, 6 so as to move a half step (17-18) on energization and a half step (18-19) ;on de-energization and auxiliary armatures 7, 8 normally biased to prevent movement of the plunger armature 3, due to mechanical acceleration. On energization of the coil 2 armatures 7, 8 are withdrawn from the path of a pot 11 attached to the armature 3 which is attracted downward and turned as described above. The plunger armature 3 has  s ecured to its upper end two contact springs 13, -14. The spring 14 engages a central fixed contact 15 and the spring 13 is moved into successive engagement with a ring of fixed contacts 16. The contacts may be separated when the plunger armature is in the attracted position or the springs 13, 14 may flex sufficiently for the contacts to remain in engagement.
Patent GB-956405-A (GB)
Title: Improvements relating to nickel-chromium-cobalt alloys
Inventor: SMITH RONALD ALFRED
IPC: C22C19/05
Filed: 1961-11-21
Abstract: A nickel base alloy for gas turbine parts consists of: -<TABS:0956405/C3/1> Ni as balance except for impurities such as Si, Mn, Fe, maximum 1% each, 1.5% total, with Ca and Mg maximum 0.005%. To reduce impurities, the alloy may be melted and held at 1400-1600 DEG C. for at least 5 minutes under vacuum.  The alloy is readily cold-formed and welded in the solution-heated, e.g. effected at 1050-1200  DEG C. for 2 minutes-8 hours, and quenched condition, prior to ageing at 700-950  DEG C. for 2-16 hours. Comparative Ni base alloys are disclosed containing 14-20% Cr, 10-20% Co, 0-10% Mo, 0.01-0.2% C, 3.54-5.67% Ti+Al, up to 0.008% B and up to 0.1% Zr.  The first Provisional Specification describes an alloy wider in scope than that of the invention in that Mo is 5-9% and Ti+Al is 3.5-5.5%.
Patent GB-1273241-A (GB)
Title: Heterobicyclic amino acids
Inventor: SHEEHAN JOHN CLARK
IPC: C07D499/00
Filed: 1969-08-21
Abstract: 1,273,241. Heterocyclic amino acids. BRISTOL-MYERS CO. 21 Aug., 1969, No. 41668/69. Headings C2A and C2C. Novel compounds of Formulµ IIa and IIIa and salts thereof are prepared by the removal of protecting groups from intermediates of Formulµ IVa and Va wherein X is a "blocked" primary amino group as used in the field of peptide synthesis and R is a labile ester group, which are prepared by reaction of a compound of Formula VIIa with an ester of Formula CH 3 CO.CO.OR, or its quaternary methiodide, CH 2 =C(X). COOR or CH 3 .CS.CO.OR or by reaction of a compound of formula with a compound of formula HSCH 2 CO.CO.OR or formula The novel compounds are stated to possess antibacterial properties.
Patent GB-1516850-A (GB)
Title: Process for the manufacture of low-pilling fibrous products from polyesters
IPC: D06M101/16
Filed: 1975-10-13
Abstract: 1516850 Antipilling treatment CHEMISCHE WERKE HULS AG 13 Oct 1975 [15 Oct 1974] 41789/75 Heading D1P [Also in Divisions B5 and C3] Fibrous products including woven and knitted fabrics whose fibres are of a polyester which contains 0.05-5.0 mol per cent relative to the acid component of units of a dicarboxylic acid and/or diol containing an acetal group in the main chain are treated with an aqueous acid e.g. an aqueous solution of a mineral acid, an acid salt or an ammonium salt of a strong acid or an acidic organic salt. Preferably the concentration of the acid is 0.00001-20.0% by wt.
Patent GB-1477084-A (GB)
Title: Disazo dyestuffs
IPC: D06P1/06
Filed: 1975-10-13
Abstract: Disazo dyes of the formula I where the symbols have the meanings indicated in Claim 1 are obtained by coupling  delta -acid onto the corresponding, diazotised monoazoamine. The latter can be obtained from the components, likewise by coupling. The dyes are suitable in particular for dyeing polyamide and leather in blue or violet shades. <IMAGE>
Patent GB-1111277-A (GB)
Title: Variable resistance device
IPC: H01C10/00
Filed: 1965-10-01
Abstract: 1,111,277. Counting-apparatus; analogue-todigital converters. SIEMENS-SCHUCKERTWERKE A.G. 1 Oct., 1965 [3 Oct., 1964], No. 41838/65. Headings G4D and G4H. [Also in Division H1]. A transducer comprises a magnetic circuit in which a pair of polepieces define a cylindrical air gap in which is mounted one or more rotatable soft magnetic toothed wheels, and a magneto-resistor for each wheel is mounted on the inner face of one of the polepieces. The magneto-resistors may be of an A III  B v  compound such as indium antimonide or indium arsenide and may have parallel aligned needle-form inclusions of nickel antimonide. Each magneto-resistor may have two terminals and be operated as a resistor or may have in addition a centre contact and be operated as a potentiometer. As shown, Fig. 1, a permanent magnet 1 is provided with polepieces 2, 4 between which are mounted toothed wheels 4. A magnetoresistor 5 is provided for each of the wheels. The arrangement of the teeth of a wheel may be selected to produce a desired output; for example, if the teeth are coplanar and spaced, Fig. 2b (not shown), the output as the wheel is rotated comprises a series of equally spaced pulses, Fig. 2a (not shown); if the teeth are staggered helically and touching, Fig. 3b (not shown), the output comprises a series of steps forming an approximately linear ramp, Fig. 3a (not shown); if the teeth are staggered helically and spaced, Fig. 4b (not shown), the output comprises a series of pulses of increasing amplitude, Fig. 4a (not shown). One of the teeth of the wheel may be omitted or be replaced by one of brass, Fig. 6 (not shown). The teeth may also be staggered with a sinusoidal displacement, or may vary in width without being staggered. One or more toothed wheels may be provided on a single shaft to measure the angle of revolution, and a plurality of wheels may be so arranged that each rotates once for a repeated number of revolutions of the preceding wheel to form, for example, a decadic counter. A wheel having a large number of teeth (e.g. 5000) may be used as an angular step measuring device for linear movements of digital control systems. The teeth may be of laminated or non- laminated soft magnetic material or of a ferrite and may also be of brass or plastic with soft magnetic inserts. More than two polepieces may be provided and each may have magnetoresistors mounted on it.
Patent GB-1161676-A (GB)
Title: Bonding Thermoplastic Materials to Cylindrical Articles
IPC: F16L9/133
Filed: 1966-09-20
Abstract: 1,161,676. Plastics laminates. E. I. DU PONT DE NEMOURS & CO. 20 Sept., 1966 [20 Sept., 1965], No. 41844/66. Heading B5N. [Also in Division F2] A process for bonding a thermoplastic material to a substantially cylindrical article comprises placing at least one layer of the thermoplastic material over the curved surface of a cylinder, placing the covered cylinder within a closely fitting substantially non- deformable cylindrical sleeve, the thermoplastic material being adherable to the cylinder or to the cylindrical sleeve at the softening temperature of the thermoplastic material, heating the assembly in such a manner as to cause the thermoplastic material to soften and to cause the cylinder to expand a greater amount than the cylindrical sleeve, maintaining such conditions for a period of time sufficient to bond the thermoplastic material to the cylinder or to the cylindrical sleeve, and thereafter cooling the assembly. In one example, Fig. 1, three layers of tetrafluoroethylene/hexafluoropropylene copolymer 12 are wrapped around an aluminium mandrel 11 and surrounded by a sleeve 13 of polytetrafluoroethylene. Heat is applied by a cartridge heater 14 to expand the mandrel, soften the layers 12 and bond the layers 12 to the sleeve 13. The lined sleeve may be subsequently glazed by heating at different temperatures for stated times. The combination is then cooled by dipping in cold water. If the sleeve 13 is thin it may be supported during the process by an outer non-adherent metal sleeve. In a second embodiment a mandrel covered with three layers of a copolymer of tetrafluoroethylene and hexafluoropropylene is inserted in a metal sleeve coated internally by spraying with the same copolymer, and bonding is effected as described above. Instead of using the cartridge heater 14 the assembly may be inserted in an oven. In a further embodiment two layers of the aforesaid copolymer are united using a polytetrafluoroethylene mandrel and an outer non-adherable heatable steel sleeve. An aluminium screen, a plastics net, or a perforated stainless steel sheet may be inserted between the two copolymer layers. Alternatively the two copolymer layers are caused to adhere to the polytetrafluoroethylene core. In a still further example a non-adherable polytetrafluoroethylene core covered first with a film of branched polyethylene and then a polyvinyl fluoride film which has been flame treated, is inserted in an outer stainless steel sleeve. The plastics laminate formed may be slit to form a sheet. In other examples the polyethylene and polyvinyl fluoride sheets are reversed, or the latter is replaced by a film of oriented polypropylene so that a laminate suitable for use in vacuum packing results.
Patent GB-909996-A (GB)
Title: Mechanism for clamping flexible printing plates
Inventor: NILS NORLIN
IPC: B41F27/12
Filed: 1958-12-29
Abstract: 909,996. Printing-surfaces. ALLERS ETABLISSEMENT A.S., CARL. Dec. 29, 1958, No. 41929/58. Class 100 (2). In a mechanism for clamping a flexible plate 2 around a cylinder by bars 5 mounted in opposition in an axial groove in the cylinder, the bars 5 are each provided with a groove 8 to receive out-turned lips 7 of the plate which ends 6 pass down between the bars and wherein operating mechanism is located in the groove 8 to move the bars and includes means to eject the lips from the grooves in the bar. The grooves or recesses 8 are formed conjointly by the wall of the recesses in the bar 5 and by the outer surface of a shoulder 9<SP>1</SP> on a supplementary part 9 formed locally or continuously with a bead 10. A spring C clip 16 is attached to the sleeves 11 so that when a disc 12 is rotated the bar 5 moves axially in relation to the sleeve 11 and the bead 10 strips the lips 7 from the groove 8. Adjacent discs, designated B, Fig. 1, which effect the strips operate on different ends 6 of the plate 2. Further discs A are rotatable to draw the bars 5 together to clamp the plate around the cylinder and further discs C having pins 11 shaped eccentrically at 19 so that the bent ends 6 of the plate may be drawn into the groove.