baber/WOPTO huggingface dataset:
Patent GB-1213312-A (GB)
Title: Improvements in or relating to divider circuit arrangements
Inventor: ELLIS ALFRED BRIAN EDWIN
IPC: G06J1/00
Filed: 1967-11-23
Abstract: 1,213,312. Multipliers and dividers. MARCONI CO. Ltd. 30 July, 1968 [23 Nov., 1967], No. 53282/67. Heading G4G. A multiplier/divider comprises an array of parallel resistance branches R to 128R of graduated binary values selected by mechanical or electronic switches 1 to 8 operated by digital logic C1 in accordance with a numerator, energized from fixed voltage source F to excite feedback operational amplifier A whose output energizes an array of parallel binary graduated resistances R 1  to 32R 1  selected by switches 10 to 15 operated by digital logic C2 in accordance with a denominator; the array being in series with a resistor OR, developing an output voltage representing the quotient. The amplifier input may be derived from an analogue variable potentiometer and the selectible resistors may be connected in series or series parallel.
Patent GB-1222450-A (GB)
Title: Surgical device for puncturing amniotic membranes
IPC: A61B17/42
Filed: 1968-11-15
Abstract: 1,222,450. Devices for use in puncturing amniotic membranes. E. FISCHER [trading as DMB APPARATE BAU DR ING HANS MUELLER BERNHARDT], 15 Nov., 1968 [15 Nov., 1967], No. 54459/68. Heading A5R. A service for puncturing a membrane such as the amnion surrounding the foetus to facilitate the removal of a sample of fluid without tearing the membrane comprises a frustoconical member 1 formed with a central bore 2 having its lower end widened to allow the introduction of a hollow needle, said member being provided on its top end which contacts the membrane with a pair of concentric grooves 3, 4. The grooves are connected via passages 7 and 8 and flexible conduits 5, 6 to a vacuum pump and in use vacuum is applied successively to the grooves 3, 4. The vacuum is then released from the groove 3 and a central region of loose membrane xtends within the periphery of the groove 4. The needle is inserted through this loose membrane and the fluid is withdrawn through the hollow needle. The member 1 may be of stainless steel or plastics material.
Patent GB-1516100-A (GB)
Title: Audio signal processing apparatus
IPC: G10L25/78
Filed: 1975-12-17
Abstract: 1516100 Speech detector DEFENCE SECRETARY OF STATE FOR 17 Dec 1975 [17 Dec 1974 (2)] 54504/74 and 54506/74 Heading H4R In a speech detector an incoming signal is applied to first and second rectifying and smoothing circuits 6, 7 and 9, 10 respectively, the time constant of smoothing of the second circuit being larger than that of the first, and the output of the first circuit is applied directly to a comparator 8 whereas the output of the second circuit is coupled via an amplifier 11 of gain greater than unity to the comparator the output of which enables the speech circuit when the first circuit output exceeds the amplified second circuit output. The time constants are respectively 0�01 sec and 0�15 sec with FET 13 conducting and are such that with only slowly varying noise present both smoothing circuits give substantially the same output and hence comparator 8 gives a speech absent indication because the output from the second circuit as applied thereto exceeds that of the first circuit due to the presenting amplifier 11. However if a rapidly increasing input signal occurs the first circuit 6, 7 responds more quickly than the second circuit and output of amplifier 8 is switched to give a speech present indication via gate 15, integrated circuit monostable 17 and FET 18. The speech present signal also switches off FET 13 to increase the time constant of the second circuit 9, 10 to about 15 secs i.e. to a period greater than any continuous vocalization in normal speech. To guard against a sudden increase in noise level causing the muting to be removed a second comparator 25, integrated circuit monostable 26 and transistor 27 are provided. However the gain of the signal of the second circuit 9, 10 as applied to the comparator 25 is 1�2 as compared with a gain of 1�5 as applied to comparator 8. For a sudden increase of signal the circuit operates as before with both comparators giving a speech present indication. However in the case of noise which is not rapidly varying the output of comparator 25 reverts after about one second to cause FET 13 to be switched back on, thereby lowering the time constant of the second circuit to 0�15 seconds, and causing the output of comparator 8 to revert to a speech absent indication. Figure 1 (not shown) illustrates a simplified version of the above circuit in which components 22-27 are not provided, in which amplifier 11 has a gain of two, and in which the FET 18 is replaced by a photo resistor and photo emissive diode arrangement. The monostable device 17 uses transistor logic in this arrangement.
Patent GB-1135939-A (GB)
Title: Improvements in or relating to coating of articles
IPC: B05D1/18
Filed: 1965-12-23
Abstract: 1,135,939. Coating apparatus. CARL-ZEISSSTIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN.]. 23 Dec., 1965 [24 Dec., 1964], No. 54565/65. Heading B2L. Apparatus for coating an article by dipping the article into a solution comprises a supporting beam or frame movable by a cable drive 31, 32 to effect dipping and lifting movements of the article and includes a cam 30 serving for control of the cable drive by influencing the field or armature voltage of an electric driving motor 35 controlling the cable drive. The control of the cable drive can be such as to enable the thickness of the coating to be regulated. Fig. 2 shows an arrangement in which the article 10 to be coated can be tipped so that it is at an angle relative to the vertical during the lifting movement. In another embodiment (Fig. 3 not shown) the article can be mounted for sliding motion in a frame so that it is moved in a plane inclined relatively to the vertical.
Patent GB-1164512-A (GB)
Title: Manufacture of Gears
IPC: B21H5/02
Filed: 1966-12-07
Abstract: 1,164,512. Rolling gears; gear-cutting. FORD MOTOR CO. Ltd. 7 Dec., 1966 [28 Dec., 1965], No. 54660/66. Headings B3K and B3M. Gear teeth are rolled on a blank 20 by means of a pair of toothed dies 16 and 18, the teeth on the dies and the rolled blank closely approximating to involute teeth. The dotted line, Fig. 15 shows the tooth profile of a die tooth compared with an involute profile (solid line), the pressure angle at the tip of the coast side being greater or equal to the pressure angle at the root. A tooth on the blank, Fig. 20, is shown when prehobbed (solid line), and after rolling (dotted line), the radial metal build-up 136 caused by rolling being machined off, if desired. The die 16 is mounted on an hydraulically operated slide 22, the flow of pressure fluid to opposite sides of a piston 24 being controlled by slide valves 56 and 54. An adjustable pump 36 provides the rolling pressure, while the output from a constant volume pump 40 supplements that of pump 36 for rapid advance and retraction movement of the die. Cam-operated sensing valves 78 and 80 indicate the die penetration. A milling cutter 82, Fig. 7, is shown prehobbing the blank 20, a common motor 112 driving the cutter through bevel gearing, and indexing the blank by worm and pinion gearing.
Patent GB-1364890-A (GB)
Title: Gas burner
IPC: F23D14/26
Filed: 1971-11-24
Abstract: 1364890 Gas burners COMPAGNIE EUROPEENNE POUR L'EQUIPEMENT MENAGER 24 Nov 1971 [27 Nov 1970 24 May 1971] 54669/71 Heading F4T A gas burner comprises a cylindrical shell 8 of sheet metal which encloses a mixing chamber 6 and has an inlet tube 1 for a combustible gas and air mixture at one end and a plurality of outlet holes 7 in its cylindrical wall, there being provided in the chamber 6 a deflector 12 having an inclined surface positioned opposite the outlet holes 7 to direct the gas/air mixture through the holes at an acute angle to the direction of inlet throughflow. A pilot flame slot 5 is fed from an expansion chamber 10 defined by a lower burner cup 3 and holes 9 and the size of the slot is determined by a flange 15 or by bosses on the shell 8 or cup 3. The bottom 13 of the deflector is curved upwards to a degree which determines the volume of the chamber 6. In alternative embodiments it may be flat or open. A cover 11 is provided which is secured by crimping over the upper periphery 14 of the shell 8. The deflector and cover may be combined in a single member suitably of ceramic material with a self-cleaning catalytic enamel coating.
Patent GB-1281937-A (GB)
Title: Esters of a brominated bis-phenol and their use in inhibition of flammability of polyesters
Inventor: BELL FREDERICK ANTHONY
IPC: C08K5/107
Filed: 1969-11-11
Abstract: 1281937 Polyester compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 20 Oct 1970 [11 Nov 1969] 55097/69 Heading C3R [Also in Division C2] Polyester mixtures of reduced flammability are obtained by forming an intimate mixture in the molten state of a polyester with sufficient of a bromo compound and with sufficient of an antimony compound to give a mixture containing the equivalent of from 0À5 to 10% of bromine by wt. and from 0À1 to 5À0% of Sb by wt., said bromo compound being of the formula wherein R is C 1 -C 3  alkyl, said antimony compound being an antimony compound soluble in the polyester, or if in excess of its solubility, then in a finely divided state. Specified antimony compounds are antimony trioxide, antimonic acid, antimony glycoloxide, antimony acetate and triphenyl antimony. Specified components for the polyesters are terephthalic acid, naphthalene - 2 : 6 - dicarboxylic acid and 1: 2 - diphenoxyethane - p,p<SP>1</SP> - dicarboxylic acid and glycols of the formula HO(CH 2 ) n OH wherein n is from 2 to 10, and bis-(hydroxymethyl)cyclohexane. The polyesters include copolyesters with other acids. Examples are given for the preparation of the polyester mixtures.
Patent GB-1324650-A (GB)
Title: Radio transmitter receivers
Inventor: BOYER M L
IPC: H04W88/18
Filed: 1970-11-20
Abstract: 1324650 Radio signalling COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 20 Nov 1970 [20 Nov 1969] 55336/70 Heading H4L A radio transmitter-receiver employs calling codes transmitted in one of a number of audio bands within the voice frequency band, an n-bit code in one of k bands thus allowing 2<SP>n</SP>, k different stations to be called. A further band in the voice frequency band is used for data representing the detected level of received signals and controls the selection of one of a number of directional aerials to achieve best reception and security, the latter being enhanced by further control signals exchanged between units in communication to reduce the transmitted power to a minimum level consistent with adequate S/N ratio. The Specification describes and illustrates schematically the control and switching arrangements necessary. Specification 1,278,568 which describes a similar arrangement for adjusting transmitted power is referred to.
Patent GB-1489257-A (GB)
Title: Precision bending of metals
IPC: B21D5/02
Filed: 1974-12-24
Abstract: 1489257 Bending sheet metal NIPPON KOKAN KK and T NAKAGAWA 24 Dec 1974 [27 Dec 1973] 55788/74 Heading B3E That part of a workpiece 14 which is deformed during bending is subjected during bending to a compressive stress in the direction of its thickness, the stress being applied on the tension side in the region of plastic deformation. In Fig. 12, the descent of a die 11 under force Fb is opposed by a counter die 13 subject to a pneumatically or hydraulically generated opposing force to produce a counter-pressure Fc, whereby as the work is bent about die 11 by rollers 16a, 16b, it is subject to compression at the bend 15. The distance Do-2 between the lines of action of the rollers, either at the finish of bending as shown, or at the start when the work is laid across the rollers, should be between 3À5 and 6 times the thickness of the workpiece. The upper surface of the counter die may be flat, concave, or convex, and be curved, or V-shaped. Cracking of the workpiece and various defects of shape in the bend are stated to be avoided.
Patent GB-1416552-A (GB)
Title: Friction clutches
IPC: F16D13/46
Filed: 1972-12-04
Abstract: 1416552 Diaphragm spring clutch AUTOMOTIVE PRODUCTS Ltd 7 Nov 1973 [4 Dec 1972] 55928/72 Heading F2C A diaphragm spring friction clutch comprises a cover 15 which can be fixed to an engine flywheel 10, the cover 15 having a driving surface 19 between which and a presser plate 26 a driven plate 32 can be clamped by a diaphragm spring 36, the cover 15 having a secured to it an annular spring abutment ring 20 (by screws, Fig. 3, not shown) so that the coverplate 15, driven plate 32, presser plate 26 and diaphragm spring 36 stay together when separated from the flywheel 10. The outer edge of the diaphragm spring 36 engages a flange 23 of the ring 20 through a fulcrum ring 38. A push rod 46 extending through the driven shaft 30 disengages the clutch by acting on a plate 39 which is held against the spring fingers 41 by springs 44. Tangential straps interconnect cover 15 and presser plate 26 (Fig. 5, not shown). The abutment ring 20 supports the starter ring gear 24.
Patent GB-1528749-A (GB)
Title: Pipe couplings
IPC: F16L19/065
Filed: 1974-12-28
Abstract: 1528749 Pipe couplings MANNIN ENG Ltd 29 Sept 1975 [28 Dec 1974] 55949/74 Heading F2G A coupling for a pipe 15 to a body 13 comprises a hollow screw threaded stud 10 to screw into a tapped bore 12 in the body 13, and surrounding the pipe 15, the stud 10 having a counterbore 16 containing a split ring 18 held in place by a metallic seal carrier 22 having a chamfered end 21 to enable force fitting of the carrier behind a lip 20 on the counterbore 16, a non-split plastics sealing member 23 being carried by a tip and rebate formation 27 at the other end of the carrier 22, the sealing member 23 being tapered at 23a for engagement with a tapered seating 24 in the body 13, the arrangement being such that on tightening of the stud 10 the sealing member 23 is pressed against the pipe 15 to provide a seal and the split ring 18 acts as a pipe gripping member. In alternative embodiments the end 21 of the carrier 22 may be longitudinally slit to facilitate fitting of the carrier with the lip 20, and the ring 18 may be replaced by a split collar performing the same pipe gripping function in use.
Patent GB-1287470-A (GB)
Title: Pressurised dispensing package
Inventor: WEBSTER MILO EDWARD
IPC: B65D83/14
Filed: 1969-11-18
Abstract: 1287470 Pressurized dispensing containers GILLETTE CO 18 Nov 1969 [25 Nov 1968] 56455/69 Heading F1R In a double container package for dispensing a mixture of two substances under pressure, the container discharge valve is arranged to open with snap action. As shown, the package has a flexible walled inner container 22 seated on base (20) of a rigid walled outer container (10). The valve assembly 18 comprises a housing connected by a metering orifice 44 to a dip tube 32 and having latch means comprising flexible fingers 50 located about the valve stem portion Fig. 3 (not shown) and these fingers have a latch surface 54 and a ramp surface 56 which engages stop surface 74 of stem 26, the latch surface 54 being inclined at a greater acute angle to the direction of movement of the valve stem 26 than ramp surface 56. The latch means provide initial resistance to the opening movement of the valve stem, which resistance reduces on further movement of stem, thus providing a snap action opening for the ports 66, 68 which connect the discharge passage to the valve housing. An annular flange portion 72 on the stem provides a surface on which pressurized material in the package acts to tend to move the stem to the open position.
Patent GB-1404026-A (GB)
Title: Cooker timer incorporating a control valve
IPC: F16K31/48
Filed: 1972-12-07
Abstract: 1404026 Cooker timers MALLORY TIMERS Ltd 7 Dec 1972 56551/72 Heading A4D [Also in Division F2]  A timer for a gas cooker comprises: a drive motor; a gas-control valve; a first manually operable setting means arranged to determine the moment when the valve closes to terminate a cooking operation; a second manually operable setting means arranged to determine the length of time for which the valve is open; and a planetary gear mechanism comprising a sun gear, a ring gear, and a planet gear, the planetary gear mechanism being operable to act mechanically on a mechanical linkage arranged to act mechanically on the gascontrol valve to open and close the gas-control valve in accordance with the settings of the two setting means. The timer 10, Fig. 1, is similar to the timer disclosed in Specification 984224 (Division H1) and operates a gas-control valve 34, Fig. 4, including a valve block 54 provided with a gas intake port 58 and a gas exhaust port 60. The flow of gas through the valve is controlled by the vertical movement of a plunger 68 in a fitting 66. A spring 74 urges the plunger upwards so that a resilient flange washer 78 carried by a valve stem 72 engages the fitting 66 and prevents gas flow. The plunger may be moved downwards to allow gas flow by downward movement of a generally L-shaped valve actuator blade 46 pivoted in apertures 44 and urged upwards by a spring 52. The timer 10 includes a lug 204, Fig. 4, which engages the valve actuator blade 46; the lug 204 moves downwardly to commence the cooking operation and moves upwardly to terminate the cooking operation. The plunger 68 is provided with an "O" ring 82 to ensure a gas seal.
Patent GB-1369602-A (GB)
Title: Electrical circuits that include ripple filters
IPC: H02M1/40
Filed: 1970-12-08
Abstract: 1369602 Smoothing pulsating current BRENTFORD ELECTRIC Ltd and F E SPOONER 3 Dec 1971 [8 Dec 1970] 58290/70 Heading H2F A circuit comprises a rectifier 12 feeding current via a smoothing choke 13 to a load 10, the choke having first and second windings 15, 17 having numbers of turns N1, N2 wound on a magnetic core and a resistor 18 having a value of R1, connected in series with the output of the rectifier 12 and three further resistors 21, 20, 22 having values R2, R3 and R4 respectively and an amplifier 19, connected as shown between resistor 18 and the second winding 17, so as to prevent saturation of the core of choke 15 by the direct component of the load current and wherein A further choke 31 may be included to prevent ripple being fed into winding 17. A further balanced winding 17a may be supplied by a further amplifier 27 with a signal proportional to the ripple, obtained by a capacitor 25, so as to minimize the ripple in the load 10. In Fig. 2 (not shown) amplifiers 19-27 are connected in cascade to feed winding 17.
Patent GB-1445175-A (GB)
Title: Oxidation resistant brazing
IPC: C22C38/00
Filed: 1973-12-18
Abstract: 1445175 Diffusion coating of Cu with Al CHRYSLER CORP 18 Dec 1973 [18 Dec 1972] 58529/73 Heading C7F [Also in Division B3] A copper-brazed joint is coated with Al, e.g. by dipping into a slurry, and then heated at about 1800 F in hydrogen or vacuum or an inert gas to diffuse the Al through the Cu. The joint may be in a stainless steel regenerator core for a gas turbine.
Patent GB-1372207-A (GB)
Title: Solanoid-operable fuel injection valves for internal combustion engines
IPC: F02M51/08
Filed: 1971-12-17
Abstract: 1372207 I C engine fuel injectors ROBERT BOSCH GmbH 17 Dec 1971 [18 Dec 1970] 58610/71 Heading FIB [Also in Division H1] The valve member 10 mounted on the armature 5 of an electromagnet is located co-axially of the valve seat 13 by two spaced diaphragms 20, 21 clamped at their outer edges in the injector housing 1. The threaded shank 25 of the member 10 is secured in the armature 5 with adhesive 37 and the armature comprises a soft iron part 28 and aluminium parts 24 and 27. With the coil 8 de-energized the armature part 28 is spaced approximately 0À06 mm from the soft iron ring 32 under the bias of the spring 15.
Patent GB-1348820-A (GB)
Title: Deep dyeable lustrous and fire-retardant linear polyester  composition
IPC: C08K5/523
Filed: 1971-12-17
Abstract: 1348820 Fire-retardant polyester compositions ALLIED CHEMICAL CORP 17 Dec 1971 [18 Dec 1970] 58662/71 Heading C3R A composition suitable for use in the production of fibres, fabrics and carpets having fire retardant properties comprises a linear polyester and (a) an aryl bromide which is a benzene, naphthalene or diphenyl having at least five bromine atoms as ring substituents, any other ring substituents present being methyl or ethyl groups or chlorine atoms, the aryl bromide being present in an amount which provides 1- 10% by weight of bromine based on the weight of the polyester and (b) an aryl phosphate of the formula (RO) 3 P=O in which R is a phenyl, naphthyl or diphenyl group which is unsubstituted or substituted by one or more alkyl groups or halogen atoms, in an amount which provides 0À1-2% by weight of phosphorus based on the weight of the polyester. The aryl bromide may be pentabromobenzene, toluene, naphthalene or diphenyl, hexabromo benzene, chloropentabromobenzene, octabromo naphthalene, dimethylpentabromonaphthalene, dichlorohexabromonaphthalene, chloromethyl ethyl pentabromonaphthalene, decabromodiphenyl, pentamethyl pentabromo diphenyl, dichloro triethyl pentabromodiphenyl or chloromethyl octabromodiphenyl, and the aryl phosphate may be triphenyl, tricresyl, tris(tribromo phenyl), tris(dimethylnaphthyl), cresyldiphenyl or tris(chlorodiethyldiphenyl) phosphate. In the examples the compositions comprise polyethylene terephthalate containing triphenyl phosphate with hexabromobenzene, pentabromotoluene or octabromodiphenyl.
Patent GB-1374618-A (GB)
Title: Exhaust system for connecting a supercharged internal combustion engine to exhaust-gas driven turbo-blowers
IPC: F02B37/02
Filed: 1971-12-23
Abstract: 1374618 I C engine exhaust systems SOC D'ETUDES DE MACHINES THERMIQUES 23 Dec 1971 [15 Jan 1971] 60047/71 Heading FIB An exhaust system for connecting a supercharged engine to exhaust-gas driven turboblowers 10, 10' comprises groups of exhaust pipes 1, 2, 3, 4, and 1', 2', 3', 4 each connected by a convergent nozzle 5, 5' to a chamber 8 common to all the groups of exhaust pipes. The nozzles 5, 5' are divided into four compartments by respective pairs of partitions 6, 7 and 6', 7 and each compartment communicates with an exhaust pipe. Expansion couplings 9, 9' are provided between the nozzles 5, 5' and the chamber 8 and the chamber is connected to the turbo-blowers 10, 10' by expansion couplings (11, 11'), Fig. 2 (not shown). The groups of exhaust pipes may be connected to the respective V-arranged banks of a diesel engine.
Patent GB-1291598-A (GB)
Title: Perpetual calendar
Inventor: BENSON BENGT ANDERS
IPC: G09D3/08
Filed: 1969-12-10
Abstract: 1291598 Perpetual calendars B A BENSON 10 Dec 1969 [18 Dec 1968] 60288/69 Heading G3T A perpetual calendar comprises an upper disc 10 and a lower disc 12 relatively rotatable about a common centre, the lower disc having at least one year scale 28 and a weekday scale 30 whilst the upper disc has a month scale 22 and a date scale 24 or date table (24<SP>1</SP>). The upper disc is provided with a window 26 through which a portion of the weekday scale 30 is visible, the date scale 24 covering the adjacent portion of the year scale 28. The outer edge of the month scale 22 is recessed to enable a selected month of the scale 22 to be aligned with a selected year of the scale 28, the weekday on which any day of the selected month falls then being read from the cooperating scales 24, 30. The month scale is provided at one end with an additional portion marked with the months January and February and is used if the selected year is a leap year. In a modification, an additional year scale, which is viewed through a second window in the upper disc is provided radially inwardly of the weekday scale 30. The discs are made of metal, cardboard or plastics.