baber/WOPTO huggingface dataset:
Patent GB-1418848-A (GB)
Title: Parallel coder for pulse coded transmisstion with a compression  law
IPC: H03M1/00
Filed: 1973-09-14
Abstract: 1418848 Analogue-to-digital conversion COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 14 Sept 1973 [14 Sept 1972] 43332/73 Heading H3H An analogue to digital converter having a compression law defined by successive linear segments of progressively decreasing slope for converting an input analogue N into a parallel code comprising a sign bit S, bits A, B, C defining the segment in which the input lies, and bits W, X, Y, Z defining the position of the input within the segment, comprises an input circuit, Fig. 2a, having non-linearly related threshold circuits A10-A14 for generating S, A, B and C, and an output circuit, Fig. 5, having threshold circuits A31-A45 supplied with linearly spaced reference levels from a potential divider 30 energized with current J of a sign and value selected according to a non-linear relationship in dependence on the outputs of threshold circuits A10-A14. As shown, one of four input amplifiers Al- A4 having respective gains of 1, 8, 8 plus positive bias, and 8 plus negative bias, is switched in according to the outputs of threshold circuits A10-A14, remembered in flip-flops B 10 -B 14 . The bias of amplifiers A3, A4 is equivalent to the upper end of the lowest segment of the compression law. The reference current J for the circuit of Fig. 5 is obtained in a non-linear decoder (Fig. 4, not shown) which selects one of four tapping points (e ... h) on a geometrically progressive voltage divider according to the outputs of flip-flops B11-B14, the voltage divider being energized with positive or negative current depending on the sign bit S.
Patent GB-953657-A (GB)
Title: Improvements in or relating to embossing dies for the manufacture of thermoplastic sheet material
Inventor: LEES ERIC WHITTAKER
IPC: C22F1/00
Filed: 1960-12-16
Abstract: 953,657. Making embossing dies. IMPERIAL CHEMICAL INDUSTRIES Ltd. Nov. 29, 1961 [Dec. 16, 1960], No. 43347/60. Heading B3A. [Also in Division B5] A method of producing a pattern in the form of a multiplicity of fine holes on a metal embossing surface consists of heating the embossing surface to render it temporarily malleable, forming the holes by applying an embossing punch to the surface and subsequently allowing the metal to return to its normal state. In an embodiment an embossing die for imparting to the surface of thermoplastic materials a suede or velvet-like affect is produced by heating an aluminium or copper roller to approximately 300‹ C. and then punching its surface with a plurality of holes approximately 20,000 to the square inch, each hole being 0.003 inch in diameter and about 0.008 inch deep. The surface density of the holes ranges from 10,000 to 50,000 per square inch. Alternatively, the embossing surface is on a sleeve which is mounted on a steel core.
Patent GB-433626-A (GB)
Abstract: 433,626. Coin-freed postal franking- machines. BELL PUNCH CO., Ltd., 39, St. James's Street, Westminster. Feb. 17, 1934, No. 5319. Convention date, Feb. 18, 1933. [Class 27] Coin action, weight.-In a postal franking- machine, the printing-roller and an impression roller are normally located in relatively inoperative positions and are associated with a device for preventing the insertion of an envelope &c. between the rollers, means being provided, preferably on insertion of a coin, for freeing the passage between the rollers and for bringing them into operative position. The insertion of a coin rocks a lever 27 which liberates a spring-pressed lever 28 so as to cause its arm 28<a> to permit a catch 29 mounted on the driven part of the mechanism to engage with the teeth of a wheel 30 on a shaft 3 rotated from a crank handle or an electric motor. After nearly a half-revolution of the shaft, during which period a roller 4 has made a complete revolution to cause the printing- elements 13 carried thereby to be inked by a roller 6, a lever 24 is released by a cam 21 on the shaft and is rocked by a spring 25 to act through links 22 on arms 19 freely mounted on a shaft in line with the shaft of the roller 4. The arms 19 carry a bar 20 which normally lies between the roller 4 and an impression roller 5, and rocking of the lever 24 withdraws the bar from between the rollers to permit an envelope &c. to be inserted. Immediately afterwards, a cam 18 on the shaft 3 rocks a lever 16 flexibly connected to a lever 14 supporting the roller 5. Rocking of the lever 16 raises the roller 5 into position to co-operate with the roller 4 in feeding the envelope &c. forward. After the envelope &c. has passed, the roller 5 and bar 20 are returned to normal position, and the catch 29 rides on to the arm 28<a> to disconnect the driving-shaft.
Patent GB-1385882-A (GB)
Title: Seal assemblies
IPC: F16J15/32
Filed: 1971-09-17
Abstract: 1385882 Seals BAL Ltd 19 May 1972 [17 Sept 1971] 43382/71 Heading F2B A U-section seal for a piston-rod is retained on one of the relatively movable members 15, 16 by means of a keeper member 14 having a ridged surface engageable with one of the limbs 12. The seal may be made of elastomeric material and provided with annular ribs and an anti-extrusion ring 13.
Patent GB-982528-A (GB)
Title: Manufacture of lenses
Inventor: CRADDOCK CHARLES HENRY
IPC: B29C33/00
Filed: 1962-11-19
Abstract: 982,528. Moulding lenses. COMBINED OPTICAL INDUSTRIES Ltd. Nov. 11, 1963 [Nov. 19, 1962], No. 43621/62. Heading B5A. In a lens moulding device the die members 13, 21 are located in inclined bores of die housings 10, 11 mounted respectively in frames 16, 23. The housing 10 is rotatably adjustable in the frame 16 and is retained in the selected position by a spring loaded pin 18 which enters the appropriate one of a series of holes in the housing.
Patent GB-437429-A (GB)
Abstract: 437,429. Condensers. BOSCH AKT.- GES., R., 4, Militarstrasse, Stuttgart, Germany. May 15, 1935, Nos. 14189 and 14190. Convention dates, June 8, 1934 and Oct. 27, 1934. [Class 38 (ii)] Where electrodes of a condenser are formed by metallizing one face of a strip of insulating- material one edge is turned over to cause the metallized side to be exposed at the edges. In the case of a wound condenser, the turned over edges 3, 4 of succeeding layers 1, 2, come into contact with metallized surfaces of the same polarity. A similar effect is obtained in flat laminated condensers by turning over one edge at alternate ends with the alternate layers. A strip of plain insulation may be interposed between successive layers of metallized strip and in this case the turned-over edge will embrace the plain strip. The edges of the metallized strips which are not turned over may be made free from metal for a short distance inward to prevent possibility of leakage. The ends of the condenser on which the metal coatings are exposed may be coated with a further layer of metal dust.
Patent GB-1377357-A (GB)
Title: Stop motion apparatus for knitting machines
IPC: D04B35/10
Filed: 1973-09-19
Abstract: 1377357 Knitting; stop motions N LEVIN 19 Sept 1973 [16 Oct 1972] 43904/73 Heading D1C Excess yarn tension moves a yarn supporting arm 34 to a second position (dotted in Fig. 1) to stop the machine, but this movement also starts an electric motor 56 which acts to reset the yarn arm in its first position and so re-start the machine again. A latch 32 holds the yarn arm in its first position, and touches an electric contact 28b when it releases it. The electric motor then turns a crank 54 to push a rod 48 which re-sets the yarn arm via levers 44, 42. A micro-switch 60, normally held (electrically) open by the end of arm 48, closes when arm 48 moves, to continue to supply power to the electric motor after the latch 32 has been re-set. After one revolution of the crank 54 the micro-switch is opened again and the motor stops. If the yarn arm has not been re-set during this first revolution, the latch operated contact will continue to supply power to the motor to cause it make another attempt to re-set the arm. For Figures see next column
Patent GB-1275063-A (GB)
Title: Improvements in advertising or display signs
Inventor: HAWES KENNETH WARREN FREDERICK
IPC: G09F13/04
Filed: 1968-09-17
Abstract: 1275063 Advertising or display signs HAWESIGNS Ltd 10 Oct 1969 [17 Sept 1968] 44150/68 Heading G5C A spaced rim or halo R of light is formed around an illuminated display sheet 13 by transmission of light from a lamp 12 by a transparent peripheral member 14 bevelled at 17. A plastics housing 10 (provided with a fluorescent lining) is cemented to a cylindrical part 14a of the annular member 14, and the display sheet 13 is bolted to a further cylindrical part 14b of the annular member 14. The cylindrical parts may be replaced by lugs. The display sheet 13 comprises a coloured or non- coloured disc carrying silk screen printing or a transfer, or having a legend cut-out therein. The annular member 14 may carry advertising or display matter thereon.
Patent GB-1271295-A (GB)
Title: Optical projection apparatus
Inventor: BLECHER STEPHEN
IPC: G03B23/04
Filed: 1969-09-08
Abstract: 1,271,295. Slide projectors. HONEYWELL Inc. Sept.8, 1969 [Sept. 13, 1968], No.44318/69. Heading G2A. In a slide projector with a magazine adapted for automatic mechanical insertion and withdrawal of slides, two slides are simultaneously removed from the magazine, one to a "preview" position and the other to a "show" position. Two slides are simultaneously partially ejected from magazine 86 by rotation of rocker arm 108 by cam 128 driven through gears by motor 18, before they are gripped by a mechanism 90 having two jaws (144), (146) Fig. 7 (not shown) biased to hold the slides one on each side of central partition 180. Gripper mechanism 90 is driven to the right in Fig. 3 on slider 210 by crank arm 230, crank slide 92 and motor 18 and when the "preview" position is reached stops 274, 276 free one slide from the gripper mechanism 90 which continues to the right to the "show" position where stops 278 and 280 free the second slide to leave it in the "show" position. Parallel guide channels are provided in upper and lower guide-plates 202, 244, and 250, 252 respectively the lower plates being spring mounted to accommodate different slide sizes. On return of gripper 90 to the left, the "show" slide is re-engaged and pushed to the left until adjacent the "preview" slide when slide return arm 234 is rotated clockwise by engagement with cam 238 thereby freeing the show slide from gripper 90 and pushing both slides together into the magazine 86. This arrangement allows magazine 86 to be indexed by one "slide" in either direction before another cycle begins. The indexing mechanism of Specification 1,271,296 is referred to. Shutter blades (350), (352) Fig. 5 (not shown) may be automatically simultaneously moved from their closed position in front of the "preview" and "show" apertures.
Patent GB-1148545-A (GB)
Title: Process for regenerating a catalyst
IPC: C07C5/22
Filed: 1967-09-29
Abstract: 1,148,545. Regenerating hydrocarbon conversion catalysts. UNION CARBIDE CORP. 29 Sept., 1967 [15 Nov., 1966], No. 44326/67. Heading B1E. A coked dual function crystalline zeolitic based catalyst composition containing catalytically active metal e.g. Cu, Ag, An, Zn, Cd, Ti, Sn, Pb, V, Sb, Bi, Cr, Mo, W, Mu, Re, Fe, Co, Ni and Group VIII precious metals or oxides thereof, is regenerated by burning off the coke at 800F or above, cooling the catalyst to below 600F and partially rehydrating and equilisating the catalyst by inclusion of 4-18% water into its structure, and then reheating the cooled catalyst to 850F or above in a non-oxidising atmosphere.
Patent GB-1365724-A (GB)
Title: Methods of manufacturing single crystals of semiconductor mater ial
IPC: C30B13/28
Filed: 1971-09-23
Abstract: 1365724 Single silicon crystals PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 23 Sept 1971 [26 Sept 1970] 44428/71 Heading BIS  Single crystals of silicon having a rod-shaped, dislocation free part with a diameter of at least 1 cm, are made by solidifying molten silicon in substantially one growth direction in a substantially oxygen-free atmosphere, taking known measures to prevent formation of dislocations during growth of the rod-shaped crystal part of at least 1cm in diameter, by growing the crystal in a hydrogen-containing atmosphere at a rate of displacement of more than 2 mms per minute whilst maintaining the rod diameter at least 1 cm. The crystal is "vacancy-cluster free" i.e. clusters are not visible in the crystal when the latter is subjected to an amisotropic etching treatment. The crystal is preferably grown by a floating zone melting process using as starting material a dislocation-free seed crystal and initially in the growth the rod diameter is less than 1 cm but is subsequently increased to at least 1 cm. As shown in the Figure a rod-shaped body of polycrystalline silicon 1, positioned in holder 2 is movable vertically and rotatable about its vertical axis by shaft 12. The rod has a diameter of 25 mms and a length of about 40 cm and has been purified by floating zone melting. To form the single crystal a rod-shaped seed crystal 3, of silicon of length 5 cms and of diameter 8 mms is secured in holder 4 which is movable vertically by shaft 14 and also rotatable. The assembly is arranged in chamber 10 and the desired atmosphere in the chamber e.g. oxygen-free argon with 10% hydrogen, is supplied through inlet duct 11 and outlet duct 13. The upper end of rod 1 is then converted to a molten zone 6, by a water-cooled high frequency coil 5 operated by high frequency generator 15, and the seed crystal 3, lowered and contacted with the molten zone. Initially a rod shaped part 7 is drawn from the melt and after this part has attained a length of about 5 cms the drawing rate is decrease, conical part 8 formed, and subsequently a monocrystalline silicon rod 9 formed having the desired diameter and vacancy cluster-free property. The monocrystal may be used as a photosensitive target.
Patent GB-914379-A (GB)
Title: Improvements in stored energy operating mechanism for circuit breakers
IPC: G05G25/00
Filed: 1960-12-28
Abstract: 914,379. Snap-action switches. GENERAL ELECTRIC CO. Dec. 28, 1960 [Dec. 31, 1959], No. 44440/60. Class 38 (5). A switch-operating mechanism comprises a handle connected via a lost-motion and a toggle linkage to an energy storage means including a spring wound on a pulley of eccentric circumference, wherein an operating-shaft of the switch is driven by the charged spring via a further lost-motion device when the toggle linkage is moved over-centre. In Fig. 1, to close the switch, handle 12 which is loose on a shaft 3 is rotated counterclockwise, so that a lug 15 engages a lug 13 on a hub 8a also loose on shaft 3. Lug 8a is fixed to a toggle link 8 connected to a link 7 pivoted at 6a to a crank 6 on a shaft 9 carrying the pulley 11 which is thus also moved counter-clockwise to charge the spring 2. Eventually the toggle 7, 8 moves over-centre at about the time the lower end of a slot 16 in link 8 engages a pin 17a carried by shaft 3, and the spring discharges, reversing the rotation of crank 6 and continuing the movement of links 7, 8 so that shaft 3 is rotated counter-clockwise to rotate the switch 1 via gears 4, 5. The switch is opened by rotating handle 12 in the opposite direction. In a modification, Fig. 2, the pivot 6a is carried by a lever 18 and is movable radially in a slot 21 in the crank 6 so as to vary the moment arm for force transmitted thereby. A dashpot (Figs. 7, 8, not shown) may damp the opening movement following contact separation. Modified lost-motion devices are described (Fig. 9, not shown).
Patent GB-1359331-A (GB)
Title: Substituted vinyl esters of phosphorus acids
IPC: C07F9/113
Filed: 1971-09-23
Abstract: 1359331 Pesticidal vinyl esters of phosphorus acids; sodium salts of formyl propionic esters CIBA-GEIGY AG 23 Sept 1971 [24 Sept 1970 5 Aug 1971] 44525/71 Headings C2P and C2C Novel compounds of Formula I: where R 1  is C 1-5  alkyl, R 2  is C 1-5  alkyl or alkoxy or optionally substituted phenyl, R 3  is optionally substituted phenyl or phenyl (C 1-4 ) alkyl, C 1-4  alkyl or haloalkyl, C 2-5  cyanoalkyl, alkenyl or alkynyl or is C 2-8  alkyl interrupted by one or more oxygen or sulphur atoms, and X is oxygen or sulphur, provided that R 2  is alkyl or optionally substituted phenyl when R 3  is C 1-4  alkyl, may be prepared by reacting a salt of Formula IV: where M is alkali metal with a suitable phosphorus acid halide. The starting materials of Formula IV may be prepared by reacting an alkali metal in methanol with carbon monoxide and a suitable propionic acid ester. The compounds of Formula I have insecticidal and acaricidal properties and may be used as the active ingredients in conventional pesticidal compositions.
Patent GB-995267-A (GB)
Title: Improvements in and relating to hydraulic dampers
Inventor: DICKINSON RONALD SYDNEY
IPC: F16F9/14
Filed: 1962-11-24
Abstract: 995,267. Hydraulic dampers. ARMSTRONG PATENTS CO. Ltd. Nov. 18, 1963 [Nov. 24, 1962], No. 44532/62. Addition to 947,336. Heading F2S. In an improvement of the hydraulic damper of the parent Specification the closed hydraulic chamber is bounded partly by a cylindrical wall and partly by a non-cylindrical wall the axial parallel edges of the walls merging into each other. Passage means is also provided in the spindle or body member for hydraulically connecting the chambers formed one on each side of the vane. In the construction shown fluid flow restricting means in the passage means comprises two co-operating spring- loaded valve members 50, 54, the former controlling fluid flow past a valve seat 48 and the latter fluid flow through a passage in the member 50. A pair of spring-loaded one-way valves may be mounted in the valve plate 42 such that fluid may flow from the reservoir to the hydraulic chamber (Figs. 3, 4, not shown). The spindle at its upper end is supported by a bearing sleeve 22 in a part cylindrical recess 20 in the non-cylindrical wall.
Patent GB-938665-A (GB)
Title: Improvements relating to pneumatically driven turbo-electric lamps
IPC: F21S9/04
Filed: 1960-12-30
Abstract: 938,665. Air turbines; engine stop-gear. JOHN DAVIS & SON (DERBY) Ltd., and W. B. DAVIS. March 28, 1962 [Dec. 30, 1960], No. 44695/60. Classes 110 (3) and 122 (4). In a lamp of the kind in which the current for lighting the lamp is provided by an electric generator driven by a turbine wheel, means are provided for by-passing the air supply from the turbine wheel for a short initial period at starting, the by-passed air being delivered into the internal cavities of the lamp to scavenge them, clearing away any dangerous gases which may have collected, before the by-passing operation ceases and the air supply is delivered to the turbine wheel to commence normal operation. A lamp for use in mines comprises an electric generator driven by a turbine wheel 17 and supplying current to a lamp enclosed by a well glass 14 which is protected by a guard 15. Compressed air enters via a coupling 20, a filter 21 and an inlet port 22, the port being controlled by a spring-loaded piston 23 having a tapered portion which obturates the port to a variable extent to control the air flow. The air then passes through a duct 30 to a nozzle plate 32 having a nozzle (not shown) for directing the air on to the blading of the wheel 17. Initially, a by-pass valve 44 is in the open position shown, and the air is directed through a by-pass port 31 instead of going through the nozzle. The bypassed air fills the internal space of the lamp, most of it escaping through a restricted annular exhaust duct 34 and clearing away any explosive or inflammable gases which may have collected in the lamp and which might be ignited when the generator starts to rotate. The remainder of the by-passed air passes through a small orifice. 40 into a sealed chamber 41. After a certain time, the pressure in the chamber 41 becomes sufficient to push a diaphragm 42 (or bellows, capsule, plunger or any combination thereof) downwards against the action of a spring 43, thereby closing the by-pass valve 44 to bring the turbine into operation. The air exhausting through the annular duct 34 prevents dust collecting on the outside of the well glass 14. In the event of damage to the lamp such as breaking of the well glass, the internal air pressure will be relieved and the by-pass valve 44 will consequently re-open.
Patent GB-1476156-A (GB)
Title: Electrical socket
IPC: H01R13/453
Filed: 1974-10-17
Abstract: 1476156 Two part coupling BASSANI TICINO SpA 17 Oct 1974 [5 Dec 1973] 45066/74 Heading H2E A shutter for an electric socket has two lugs 9, 10, which in a first position block access to the contacts, resiliently connected at 11, 12 to a body section which rests on a fulcrum 7<SP>11</SP>. Upon simultaneous insertion of two pins through holes 15, 16 both lugs are deflected out of engagement with abutment means 25, 26 and due to action on oblique faces 9<SP>1</SP>, 10<SP>1</SP> the shutter rotates against spring 19. Insertion of one pin only causes rocking of the shutter on the fulcrum and the shutter is locked. In other embodiments the shutter movement may be linear.
Patent GB-1222879-A (GB)
Title: Improvements in or relating to valve means for liquid pressure systems
Inventor: CHOUINGS LESLIE CYRIL
IPC: B60G17/00
Filed: 1968-09-23
Abstract: 1,222,879. Fluid operated brakes; self levelling suspension. AUTOMOTIVE PRODUCTS CO. Ltd. 16 Sept., 1969 [23 Sept., 1968], No. 45123/68. Headings F2F and F2S. A valve 14 for a vehicle braking system in which the fluid braking pressure is varied in response to variations in vehicle loading, the vehicle having liquid filled struts 13 arranged between an axle 12 and the vehicle structure 10 to support the latter at a predetermined level, has a body 20 mounted on the body structure 10 formed with parallel bores 21, 22 of which bore 21 is closed at one end, is stepped intermediate its ends to form a larger diameter portion 24 containing a sleeve 25 having circumferential grooves 26, 27 connected by radial drillings 28, 29 to the bore of the sleeve in which slides a valve spool 33 connected by a linkage including a lever 34 and torsion bar 35 to limbs 36, 37 pivotally connected to structure 10 and axle 12 so that the position of the spool 33 in the bore depends on the vertical distance between body and axle, the torsion bar tending to absorb rapid relative movements. Bore 22 is also stepped to provide portions 42, 43 of which 42 is connected to the driver's control valve 17 and 43 is connected to the brake cylinders 16. A plunger 46 slidable in bore 22 contains a ball 49 urged towards a seat 51 by a spring 52, the ball being held off the seat by a pin 45 on a plug 44 to provide a free passage for liquid in the braking system in some predetermined positions of the plunger 46 depending on the pressure in the liquid-filled struts 13 which determines the pressure of liquid in a passage 32 connecting the bores 21, 22 so that the maximum degree of braking depends on the pressure in the struts and thus on the vehicle loading. Valve spool 33 carries a piston 39 which provides a dashpot action. Downward movement of the vehicle body relative to the axle moves spool 33 until a groove 38 connects passage 32 to passage 31 thus connecting struts 13 to a pump 15 and enabling liquid to be fed to the struts to raise the body to its normal level, whereas upward movement tends to move the spool 33 until groove 38 opens into bore portion 24 to connect the passage 32 to a drain port 41 leading to the liquid reservoir 19, allowing the struts to return to the normal position.