baber/WOPTO huggingface dataset:
Patent GB-1266759-A (GB)
IPC: H04N5/00
Filed: 1969-12-08
Abstract: 1,266,759. Radio receiving circuits. NIPPON ELECTRIC CO. Ltd. 8 Dec., 1969 [9 Dec., 1968], No. 69820/69. Heading H3Q.  A system for regenerating a synchronized carrier signal for demodulation from a received suppressed carrier signal carrying a composite signal containing synchronizing signals comprises means for regenerating the carrier signal, means for adding the regenerated carrier signal to the received signal, means for deriving the composite signal from the output of the carrier adding means, means for extracting the synchronizing signals from the derived composite signals, and means responsive to the extracted synchronizing signals for extracting carrier fragments from the synchronizing signal portions of the received signal, the carrier regenerating means being responsive to the carrier fragments. A suppressed carrier vestigial sideband television signal (Fig. 3a) is fed by hybrid coil 20 (Fig. 2) to a demodulator 30 and also to a carrier regeneration section 1, in which hybrid coil 101 feeds further hybrid coil 109 and also carrier sampling gate 102 in which the modulated carrier is sampled for time durations of 1À5 Ásec. at line frequency to obtain carrier burst signals (Fig. 3b). Hybrid coil 103 feeds burst signals to automatic phase control circuit 2 and also to narrow band crystal filter 104 feeding amplitude limiting amplifier 105, so as to regenerate a carrier of constant amplitude (Fig. 3c). This is passed via hybrid coil 106 to detector 30 and also via phase compensator 108 to hybrid coil 116 which feeds envelope detector 115 and also the second input of hybrid coil 109: the two inputs to hybrid coil 109 are arranged to be of the same carrier polarity, so adding in the line synchronizing periods and subtracting during the picture periods (Fig. 3d). This waveform is rectified by envelope detector 110 to produce a pulse train synchronized with the line signals (Fig. 3e), which are clamped by clamp circuit 111. Subtraction of the envelope level of the fed-back carrier, derived from envelope detector 115, compensates for variation in the output level of detector 110, due to changes in the level of the fed-back carrier. A synchronizing pulse train (Fig. 3h) is obtained from the output of clamp circuit 111 by means of slicing circuit 112, and this train is differentiated by differentiator 113 to drive monostable multivibrator 114, which produces a train of 1À5 Ásec. pulses (Fig. 3j): this is used to drive carrier sampling gate 102. Automatic phase control circuit 2 suppresses slight phase variations in the carrier supplied to detector 30: carrier fragments from hybrid coil 103 provide reference signals to phase detector 202 which is supplied with the regenerated carrier via variable phase shifter 201 which is controlled by the D.C. output from phase detector 202 via D.C. amplifier 204.
Patent GB-1267079-A (GB)
IPC: G06J1/00
Filed: 1969-07-25
Abstract: 1267079 Selective signalling INTERNATIONAL BUSINESS MACHINES CORP 25 July 1969 [7 Nov 1968] 37526/69 Headings G4D D6Y D6C1 and D7X The logarithm to the base two of the ratio of the frequencies of two pulse trains, referred to as "good" and "bad" pulse trains, is determined by (i) entering the good pulses - which are assumed to have a higher frequency than the bad pulses - into a binary counter 1, which is coupled to a shift register 2 in such a way that every time a counter stage goes on the corresponding shift register stage goes on and stays on even though the counter stage subsequently goes off; and (ii) resetting the counter to zero and simultaneously left-shifting the register one position by every bad pulse, the number of on stages in the register being converted 3 into a corresponding voltage and displayed, after smoothing 7, on a meter to provide the required number. Suppose, for example, that twelve good pulses occur for every bad pulse, then the counter will reach a count of twelve between an adjacent pair of bad pulses and the shift register will reach four on stages. When the counter is reset and the register is shifted it will have three on stages. Thus, the register will alternate between three and four on stages and the meter reading will be of a little less than three and a half, which is the logarithm to the base two of the required ratio. A calibrating arrangement is described, and a switch S-1 can be set so that an alarm will be actuated if the ratio rises too high.
Patent GB-1289029-A (GB)
IPC: G01F23/14
Filed: 1970-09-04
Abstract: 1289029 Fluid regulation NAVALCO A S 4 Sept 1970 [4 Sept 1969] 42530/70 Heading G3H [Also in Division G1H] In a method of or apparatus for determining a liquid level air, from a compressed air source 1, is fed on opening a valve 2, via a filter 3 and a reduction valve 4, to one or other of channels 16, 17 and a control channel 13 connected by a flexible graduated tube 12<SP>1</SP>, to a probe 13 and a channel 6 provided with a reduction valve, determines the channel 16, 17 through which the air-flows and the arrangement is such that should the air initially pass through channel 17 valves 6, 7 which may be automatic and kept at atmospheric pressure therebetween by a bleed hole 8, one opened to deflect the air to channel 16 and the probe 13 is then lowered on to the liquid surface to close the probe 13 and to deflect the air-stream to channel 17 to operate a visual alarm 11 on acoustic alarm 10 and the liquid level in need of the graduations tube 12<SP>1</SP>.
Patent GB-1289773-A (GB)
IPC: C03C25/10
Filed: 1970-01-26
Abstract: 1289773 Light-conducting glass filament NIPPON SELFOC KK 26 Jan 1970 [6 Feb 1969 18 March 1969] 3654/70 Heading C1M A light-conducting glass filament structure is formed by heating a glass filament, which has a refractive index gradient such that the refractive index in any cross-section perpendicular to the central axis decreases continuously from the axis to the outer surface, to a temperature at which the filament may be plastically deformed (i.e. viscosity 10<SP>3À5</SP> to 10<SP>7À5</SP> poise), and simultaneously stretching the filament at a speed adjusted such that the cross-sectional dimensions are decreased, and thus the refractive index gradient increased, the refractive indices at the axis and surface remaining constant. The process may be adapted to stretch a filament wherein there is a refractive index gradient only in the surface region, the indices at the extremities of said region being unchanged. The filament to be stretched may be disposed within a glass tube which is evacuated and stretched with the filament so that it collapses on and adheres to the filament. The tube, which may be ion exchange strengthened, is of glass whose softening point is not above that of the filament, so that a plurality of covered filaments may be fused together to form a bundle. A filament 1 may be fed at a constant rate by mechanism 3 to furnace 2, where the filament is heated (e.g. to 500-1000‹ C.) and drawn out by and on to rotating drum 4 (Fig. 1). Alternatively the filament may be drawn out by endless belts 5 (Fig. 2). The filament may be of glass of composition (by weight) 16% Tl 2 O; 24% PbO; 12% Na 2 O; and 48% SiO 2 , in which a refractive index gradient has been induced by treatment with molten KNO 3  at 460‹ C.
Patent GB-1290395-A (GB)
IPC: G01N3/56
Filed: 1969-12-23
Abstract: 1290395 Testing abrasion resistance ROLLS-ROYCE Ltd 23 Dec 1969 62550/69 Heading G1S An apparatus for testing materials e.g. the insulation on electric cable, for resistance to abrasion comprises clamping means to hold the material, an abrading tool and means for causing relative reciprocating movement between the tool and the material. In Fig. 2 the tool 38 is mounted in a tool holder 30 which is attached to holder 26 arranged in bushes 24 to move vertically, the force exerted by the tool being varied by varying the position of counterweight 52. The material is clamped to platform mounted on bars 80 forming part of a carriage reciprocated by electric motor 104 via a shaft 106 eccentrically engaging a bearing in the base of the carriage. An electrically heated thermostated oven 60 surrounds the test material, the carriage moving relative thereto by means of the bars 80 passing through bushes 74 in the oven walls. In Fig. 5, the tool 244 is carried by a holder 238 sliding vertically in carriage 202 and biased downwardly by weight 240. The carriage is reciprocated by motor 204. The test material 256 is heated by a thermostatically controlled hot plate 210. The number of cycles of abrasion may be registered by a counter. An electric warning circuit having a visual and/or audible warning may be provided which is actuated when the abrasive tool cuts through the material to a conductor in the material e. g. in electric cable, or when the tool cuts through the full thickness of the material and contacts the metal table beneath. The warning circuit may also switch off the apparatus. The material to be tested may be arranged so that it sags during the test.
Patent GB-1295622-A (GB)
IPC: F16P3/04
Filed: 1970-01-08
Abstract: 1295622 Safety guard DIAMOND H CONTROLS Ltd 23 Dec 1970 [8 Jan 1970] 957/70 Heading F2J An eyeletting machine has a guard D which is allowed to fall or is lowered by spring pressure to an operative position when initial depression of the starting actuating pedal A lowers a rod B. Complete depression of the pedal A to start the machine is prevented until a safety plunger G is withdrawn by an air cylinder F upon actuation of a microvalve E by the support arm C of the guard D as the latter reaches the operative position. The guard is applicable to other machines and alternative devices such as a switch and solenoid may be used to withdraw the safety plunger G.
Patent GB-1296547-A (GB)
IPC: B41M5/124
Filed: 1969-11-11
Abstract: 1296547 Pressure-sensitive record sheets FUJ1 PHOTO FILM CO Ltd 11 Nov 1969 [13 Nov 1968] 55124/69 Heading D2B Pressure-sensitive recording material comprises two sheets of which the first has coated, both on the same side, two colourless colourreactants, and the other has coated on one side one of the reactants, so that when they are pressed together images are formed on both. One or both of the reactants may be in microcapsules or a rupturable membrane may be provided between them. One may be leucomethylene blue or a phthalide and the other a clay, or one a vanadium compound and the other a hydroxy compound. The support sheets may be of paper or plastics film.
Patent GB-1297438-A (GB)
IPC: E04B1/346
Filed: 1970-10-14
Abstract: 1297438 Rotatable buildings P J LESTER 14 Oct 1970 [17 Oct 1969] 48819/70 Heading E1A A rotatable building comprises a column 7 which is mounted on a turntable 6, 8 and provided with beams 14, 15, 13, 16 for supporting the roof, floor and wall cladding. The building may be disposed at ground level or be provided with a basement area 2 surrounded by a wall 3. Wheels 21, may be provided to support the building and run on a track on the wall 3, a protective shield 28 therefor being provided as shown. For minor details concerning room layouts, service supply conduits disposed within the column and means for rotating the building the Specification and remaining drawings, (not shown) should be referred to.
Patent GB-1303812-A (GB)
IPC: H01L29/74
Filed: 1969-05-19
Abstract: 1303812 Controlled rectifiers WESTING- HOUSE BRAKE ENGLISH ELECTRIC SEMI-CONDUCTORS Ltd 29 April 1970 [19 May 1969] 25370/69 Heading H1K In a controlled rectifier one or more P + zones are located in surface portions of the gate zone interdigitated with the cathode zone and are spaced from the cathode zone by higher resistivity parts of the gate zone. Typically there are a plurality of cathode zones 4 (Fig. 2) interconnected by metal contact 10 and interlaced with P + zones which intercommunicate at the centre 51 and are joined at their extremities to annular contact 9. In another embodiment based on a rectangular wafer the cathode zone lies across the wafer and the intervening P+ zones are interconnected by metal contacts at one or both ends and, if the cathode zones are broken, at intermediate points also. Insulation is provided to prevent shorting of contact 10 to the parts of the P zone and P + regions it overlies. The devices may be made by diffusing gallium into opposed faces of an N-type Si wafer, successively forming the P+ and cathode zones in one of the resulting P-type zones by masked diffusion of boron and phosphorus respectively, and then vapour depositing titanium and nickel to form the contacts. Application of a suitable bias between contacts 9 and 10 causes carriers to be rapidly swept out with the device switched off and in some cases enables the device to be switched off.
Patent GB-1306297-A (GB)
IPC: B30B15/24
Filed: 1970-04-09
Abstract: 1306297 Hydraulic presses VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE AG 9 April 1970 16862/70 Heading B5F [Also in Division B3] In a press brake, flanging press or shearing machine two hydraulic actuators 1, 2 acting on a tool or workpiece are supplied with hydraulic fluid simultaneously during the working and return strokes and are connected to a common pressure comparing valve 23 which has two pressure inlets 21, 22 and an outlet 26 to an oil pump 27 via a shut-off valve 28 which opens only when the working stroke has been completed. This control prevents any damage to the press tools due to pressure surges and any uncontrolled movement of the tool e.g. the bending beam, as a result of any unilateral loading  of the press during its reversal. A pump 10 driven by a motor 9 supplies pressure fluid to the actuators via a main three-position control valve 13 and a flow control valve 16. The electric control circuit ensures that the main valve 13 is not moved to another position until the pressures in the actuators have been equalized. A pressure relief valve 29 controls the working pressure of the hydraulic fluid.
Patent GB-1307974-A (GB)
Title: Microtomes
IPC: G01N1/42
Filed: 1968-10-16
Abstract: 1307974 Tweezers NATIONAL RESEARCH DEVELOPMENT CORP 16 Jan 1970 [16 Oct 1968] 49021/68 Heading B4W [Also in Divisions F4 and G2] A pair of tweezers for transferring cut sections of biological material from a microtome to a freeze drier comprises a pair of electrically insulated arms 56, 57, e.g. of P.T.F.E., resiliently sprung apart, each arm carrying one of a pair of forceps 58, 59. For decharging cut sections held between the forceps, a wire 61 connects the forceps with an aluminium plate 62, adapted for contacting a charged polystyrene block 64.
Patent GB-1309824-A (GB)
Title: Fuel injection valves for internal combustion engines
IPC: F02M61/12
Filed: 1970-08-03
Abstract: 1309824 I. C. engine fuel injectors BARKASWERKE IFA-KOMBINAT FœR KRAFTFAHR ZEUGTEILE RENAK-WERKE VEB 3 Aug 1970 37345/70 Heading F1B A diaphragm-like rubber or plastics member 5, accommodated in a stop 6 seals one end of the injector fuel chamber and guides one end of the needle 8. The other end of the needle is guided by an elastic plastics element 9. The needle is press fitted or vulcanized into the member 5, which is clamped between the stop 6 and the body 1 by a member 4 with a plastics cap 16. A screw 12 adjusts the loading of a spring 11 acting through an abutment 15 and a metal plate 10 on the member 5. A metal insert 7 is vulcanized into the member 5.
Patent GB-1319057-A (GB)
Title: Magnetic centering and focusing assemblies for cathode-ray tubes
IPC: H01J29/54
Filed: 1969-07-04
Abstract: 1319057 Electron beam magnetic focusing and deflecting systems SMITHS INDUSTRIES Ltd 26 June 1970 [4 July 1969] 33719/69 Heading H1D A magnetic centring and focusing assembly for a cathode-ray tube includes a pair of polepieces constituted respectively by a mild steel tube 11 and a pair of annular mild steel plates 12, 13 separated by an air gap 14 and which encircle the neck 10 of the tube in such a way that the gap 14 may be varied to focus the beam and plate 13 may be adjusted relative to the plate 12 to centre the beam. A tubular magnet 21 is disposed between the plate 12 and a radial wall 16 carried by a mild steel tube 15 which is engaged upon the tubular polepiece 11 by means of screw-threads and thereby completes the flux path through the polepieces. The magnetic field in the air gap may be varied by adjustment of the length of air gap 14 by rotating the tube 11. The annular plate 13 is adjustably held by screws radially disposed in an annular support 22 (Fig. 2, not shown).
Patent GB-1327232-A (GB)
Title: Rigid cellular core structures
IPC: B32B3/12
Filed: 1970-08-11
Abstract: 1327232 Laminates INTERLOCKING SYSTEMS INTERNATIONAL Ltd 11 Aug 1970 38676/70 Heading B5N A method of producing a rigid sandwich-like structure comprises progressively expanding a collapsed structure of sheet strips to produce a core defining transversely extending cells, progressively applying a pair of surface layers each comprising an outer sheet having on one face a foamable plastics material, to opposite faces of the core so that the foamable plastics material closes the ends of the cells and foams leaving within each cell a cavity between the foamed plastics material of the surface layers. The structure may be subsequently trimmed with removal of the outer sheets thus giving a rigid core. The sheet strips are preferably of polyetherresinimpregnatedkraft paper and the outer sheets are preferably of paper. The rigid core, obtained by removal of the outer sheets, may be sandwiched between sheets of aluminium or steel.
Patent GB-1331693-A (GB)
Title: Portable bed
IPC: A47C17/82
Filed: 1971-08-31
Abstract: 1331693 Beds foldable into suitcases W L OCO 31 Aug 1971 40535/71 Headings A4J, A4H A portable bed comprises hinged mattress support sections 4, 5, 6, 7 and head and foot boards 2, 3 that can be secured together to form a suitcase for receiving section 4-7 when folded. The sections 4-7 include hinged legs 12 provided with foldable side braces 14, connecting braces 14a and springs 15. Lugs (18), Fig.2, (not shown) on section 7 are received in eyes 19 in the board 2, a lock 21, (22), Fig.2 (not shown), and braces 23 also being provided, the latter being non-detachably secured to section 7 and board 2. Eyes (25), Fig. 2 (not shown) on section 4 engage brackets 26 on footboard 3. Mosquito net holders 38, 39 pass through holes in boards 2, 3 and rests on eyes (31), (29), Figs. 4, 7 (not shown) therein. Headboard 2 includes retractable legs 40. The head and footboards include complementary hinges 50 and locks 47,48. The headboard may include a lamp.
Patent GB-1334640-A (GB)
Title: Speed of light regulated clock
IPC: G04F5/16
Filed: 1972-08-08
Abstract: 1334640 Clocks A P PEDRICK 8 Aug 1972 36905/72 Heading G3T In a clock mechanism a spark electrode unit 11 causes a light pulse which is reflected many times on the inner wall of cylinder 12 and is received by unit 17 comprising a target 4 floating in a magnetic field and carrying an apertured plate 7. When the light pulse strikes the target 4 the plate 7 is moved to allow light from a lamp 8 to strike a photo-cell 9 which applies a small charge to a discharge valve 10'. On discharge the valve 10' energizes a solenoid 18 to move a spring- loaded trigger 20 out of engagement with a toothed wheel 21 which together with wheels 22, 23 and pointer 25 moves one tooth under the influence of weight 24 (or a spring). Simultaneous with the energization of solenoid 18 spark electrode unit 16 is energized by the valve 10' to initiate control by light receiver 14, discharge valve 10 and solenoid 18', unit 11 being thus energized to commence a further cycle.
Patent GB-1341194-A (GB)
Title: Manufacture of footwear
IPC: A43B23/02
Filed: 1970-07-22
Abstract: 1341194 Seaming non-metallic sheet material SHOE & ALLIED TRADES RESEARCH ASSOCIATION 9 Sept 1971 [22 July 1970] 35624/70 Heading B5K [Also in Division A3] Two superposed sheets 1, 2 of flexible material are joined together along an edge BBB to form an assembly capable of bending with the two sheets conforming to different curvatures, by cutting the edges to be joined to different outlines such that they may be brought into alignment in a plane by bending one sheet, laying the sheet 2 against a plane surface, superimposing the sheet 1, bringing the edges to be joined into alignment by bending the sheet 1 and applying pressure to the sheets along the aligned edges, together with heat and/or adhesive as necessary, to weld or bond the sheets together along such aligned edges. As shown, the sheets 1, 2 are whole-cut backpart shoe upper components, the sheet 1 being the outer and the sheet 2 the lining. Preferably, the sheets are a thermoplastic poromeric material. To effect joining, the sheet 2 is laid in a flat-floored recess 5, corresponding to the shape of the sheet 2, in an electrically insulating template 4 fixed to the flat surface of an aluminium block 3 forming a base electrode. The sheet 1 is superimposed on the sheet 2 with the top lines BBB in alignment so that the sheet 1 bows outwardly. A clamp (not shown) may be provided. A unit 6 having a blade electrode 7 conforming to the top line is lowered to simultaneously weld and trim the sheets 1, 2 by high frequency current. A stiffener may be inserted into the pocket formed between the sheets 1, 2. In modifications, a thermo-active adhesive is used or, the sheets are not made of thermoplastic material, and any suitable adhesive may be used.
Patent GB-1342754-A (GB)
Title: Electroplating
IPC: C25D21/12
Filed: 1971-07-23
Abstract: 1342754 Electroplating apparatus J JONES D M JONES and G JONES 10 July 1972 [23 July 1971] 34723/71 Heading C7B [Also in Division G1] In order to ascertain the total immersed surface area of one or more articles 14 immersed in an electroplating bath 9 a reference body e.g. a metal sphere of known surface area is immersed in the bath, the same potential difference as applied to the immersed articles is applied thereto, and the currents flowing respectively through the articles 14 and reference body are compared. The reference body is connected to one lead of an ammeter 1 the other lead of which is clipped on to one of the cathode bars 10 of the bath 9. When power is applied to the cathode bars 10 and anode bars 11, carrying anode plates the same p.d. is applied across the articles 14 and reference body, and the respective currents flowing therethrough are measured on ammeters 13 and 1. Since the area of the sphere can be easily calculated the surface area of the articles 14 can be ascertained.