baber/WOPTO huggingface dataset:
Patent GB-1496129-A (GB)
Title: Solid state ballast for gaseous discharge lamps
IPC: H02M1/00
Filed: 1974-12-17
Abstract: 1496129 Supply circuits for discharge lamps GENERAL ELECTRIC CO 17 Dec 1974 [2 Jan 1974] 54377/74 Heading H2H  A solid state ballast circuit for a gaseous discharge lamp comprises a solid state chopper 25 for energization by A.C. line voltage and including a coasting device and coasting inductor (Fig. 1, not shown), a current sensor 31<SP>1</SP> arranged to sense instantaneous lamp current and a control circuit comprising means 34 for generating a pre-selected reference wave shape to determine the power level and to effect shaping of the line current so as to obtain a high power factor and a comparator 35 responsive to the instantaneous current and reference wave shape for varying the high frequency chopping of chopper 25 during each half cycle of the A.C. line voltage. The control circuit 34 also includes means for temporarily shaping the reference signal to obtain a high starting current. Provision is also made for supplying at least minimum lamp current during the low voltage region of each cycle of line voltage. Fig. 1 (not shown) depicts the main power supply circuit which forms the subject of Specification 1,496,130 and comprises a diode bridge rectifier supplied from the A.C. line feeding the chopper 25 via a high frequency filter and including a coasting diode and coasting inductor in series with a high intensity mercury discharge lamp. Rectifier 49 provides full-wave rectified unsmoothed output at 50, 53 which feed series regulators 69, 69<SP>1</SP> to provide positive and negative supplies for the comparator 35. A full-wave rectified reference wave form is provided by circuit 34 including a FET 59 arranged to flatten the peak of each half cycle and having a peak rectifier 63 feeding the gate of FET 59 so as to compensate for variations in supply voltage. This reference is compared at 35 with the instantaneous lamp current 31<SP>1</SP>, the comparator 35 having hysteresis so that it switches between states at 10 kHz at the beginning and end of each half cycle rising to 30 kHz at the peaks. The comparator output is fed via a transistor switching circuit 85 to the base of the chopper 25 which thus shapes the lamp current, and hence line current, in such a way as to provide the desired power and improve the power factor. The chopping transistor 25 may be replaced by anti-parallelgate-turn-off thyristors. Starting.-A capacitor 61 is inclined to delay full current of FET 59 so that the lamp current ramps down from 5A to 3A in about 8 seconds so as to provide rapid cathode heating. Increasing minimum lamp current during valleys in line wave form.-A relatively low voltage, high current full-wave rectified unidirectional voltage is supplied to the power transistor base circuit by means of a rectifier 80 supplied by auxiliary secondary windings S3, S4. This arrangement increases the current during the valley portions over that which. would be supplied by the comparator 35 so as to maintain ionization and promote re-ignition at the beginning of each half cycle.
Patent GB-1450444-A (GB)
Title: Apparatus for assembling frames
IPC: B21D53/74
Filed: 1973-11-23
Abstract: 1450444 Frame assembly apparatus HANS ROTTNER KG HARO MASCHINEN UND WERKZEUGE 23 Nov 1973 [25 Nov 1972] 54487/73 Headings B4X and B4W [Also in Division B3] Apparatus for assembling rectangular cornerjointed window or door frames 11 comprises a mounting table having members 2a, 2b for supporting the pre-assembled frame and a corner assembly unit 35, the table being indexable to bring respective corners of the frame to the unit 35 which includes abutment elements 39 for locating the corner clamping means 43 and jointing tools, e.g. press tools 45, 47, the unit 35 being pivotable so as to align itself with the corner and the table and unit being relatively adjustable towards and away from each other to accommodate different sizes of frame. The frame corner comprises abutting hollow mitred sections and an angle insert member 10 the joint being made by the action of press tools 45, 47 or, where the insert is of plastics or a softenable adhesive is used, by heating or other energy applying means mounted on the unit. Adjustment of the corner unit 35 towards and away from the index table may be by screw 51 or rack and pinion or chain mechanisms. Hydraulic, pneumatic or electromagnetic drive means may be incorporated for the adjustment and clamping movements and operation of the jointing tools.
Patent GB-1428795-A (GB)
Title: Method and apparatus for testing high voltage divider
IPC: G01R17/00
Filed: 1973-11-23
Abstract: 1428795 Measuring resistance KISHINEV NAUCH-ISSLED INST ELEKTROPRIBOROSTROENIA 23 Nov 1973 54582/73 Heading G1U The conversion ratio of a potential divider 4 (that is the ratio of the tapped output voltage across the lower resistor to the overall applied voltage) is measured by the following steps:- (a) firstly, with switches 10 and 11 in the positions shown, a second divider 1 is connected in parallel with the unknown divider 4, power 14 is applied, and the second divider is adjusted so that its output voltage equals the output voltage of the unknown divider 4, equality being indicated by a galvanometer 8, (b) balance having been achieved, switch 11 is reversed to insert a reference divider 7 in series in the second divider 1 and to replace the galvanometer 8 by a voltage measuring instrument 9, and  (c) knowing the resistance of the lower resistor 3 in the second divider 1, the total resistance and the conversion ratio of the divider 7, the difference voltage indicated by meter 9, and the output voltage from the unknown divider 4 - this being displayed on a meter 6 - the required conversion ratio of the unknown divider can then be calculated.
Patent GB-1337008-A (GB)
Title: Drive for rotatable parts
IPC: F16H1/00
Filed: 1970-11-17
Abstract: 1337008 Toothed gearing DR JOHANNES HEIDENHAIN 17 Nov 1970 [27 Nov 1969] 54680/70 Heading F2Q  An arrangement for preventing backlash between a driven wheel 2 and a drive worm 3 includes a backing member 6 located radially inwardly with respect to wheel 2 and a loading spring 12 serving to hold wheel 2 engaged between backing member 6 and worm 3. Member 6 and worm 3 are mounted by bearings 10, 11 on spaced parallel rods 9, and may be separated to disengage wheel 2 by a rotary cam 13. Alternatively this may be done by electromagnetic plungers or a pneumatic bellows.
Patent GB-1275585-A (GB)
Title: An improved seal for an annular space between a rotatable member and another member
IPC: F16J15/16
Filed: 1969-11-07
Abstract: 1275585 Rotary seals SVENSKA KULLAGERFABRIKEN AB 7 Nov 1969 [8 Nov 1968] 54699/69 Heading F2B A sealing ring for mounting on a rotatable member comprises at least two sealing lips 4, 5 engageable with the surface of a sealing member 3 and connected to a mounting portion 7 by a flexible portion 6, the operation of the sealing lips being influenced by centrifugal force of a mass 8, Fig. 2, or the mass 10 of the ring, Fig. 4. The lip 5 may be arranged to engage any of the surfaces 3a, 3b or 3c. In Fig. 2, the effect of the mass 8 causes movement in the direction of arrow 9 such that the lip 4 is pressed harder against the surface 3a and the lip 5 is moved out of contact with the surface 3c. In Fig. 4, the movement in the direction of arrow 9 due to centrifugal force presses the lip 5 against the surface 3a and relieves the lip 4 from the same surface.
Patent GB-1063556-A (GB)
Title: Surgical bone plating appliance
IPC: A61B17/80
Filed: 1965-12-29
Abstract: 1,063,556. Surgical appliances for bone traction. FEINMECHANIK A.G. FUR. Dec. 29, 1965 [Jan. 16, 1965], No. 55054/65. Heading A5R. A surgical appliance for drawing together two parts of a fractured bone comprises a bone plate 1 which is attachable by screws 3 to part 4 of the bone and a tensioning coaptor which comprises a tension screw 19 adjustably interconnecting an element attachable by pin 37 to part 5 of the bone and an element which is attached by screw head 12 to bone plate 1. The latter element comprises socket 14 and nut 17 rotatably mounted therein. The nut 17, which is prevented from moving in the axial direction of tension screw 19 by screw 21, has threaded bore 18, knurled flange 23, and aperture 24 for turning the nut, and thereby screwing tension screw 19 so as to draw the two parts of the fractured bone together. Screw 9, which is secured to socket 14, has a head 12 which is disposed eccentrically to the axis of the screw to enable it to be hooked into bone 8 in bone plate 1. The slide of the socket which faces the bone plate has a shape which corresponds to the upper surface of the bone plate and a pair of jaws (15) which are capable of gripping the sides of the bone-plate. The other element comprises a bush 29, which is housed in the head 33 of tension screw 19. Bush 29 has a bore 31 through which the lower part 38 of anchoring pin 37 is inserted. Nut 17 may be provided with a projecting stud, instead of the aperture 24 shown, and it may be turned by appropriate tools.
Patent GB-1248767-A (GB)
Title: Trays
IPC: B65D1/36
Filed: 1968-11-20
Abstract: 1,248,767. Trays. MONSANTO CO. 20 Nov., 1968 [20 Nov., 1967], No. 55079/68. Heading B8P. The corner portion of a plastics tray is reinforced by an indented part 36, 40. The tray also carries projections 53 that facilitate the removal of each tray from a stack of nested trays. The remainder of the tray is constructed as described in Specifications 1,165,034 and 1,242,907.
Patent GB-1189920-A (GB)
Title: Improvements in or relating to devices for Sealing Bottles or other Containers
Inventor: FONTANA LUCIANO
IPC: B65D41/62
Filed: 1968-11-22
Abstract: 1,189,920. Device for sealing bottles. L. FONTANA. 22 Nov., 1968 [28 Nov., 1967], No. 55447/68. Heading B8T. A device for sealing bottles comprises a stopper 1 having a crown 4, and a cap 5 provided with an annular zone 8 of weakened resistance and a lower portion 7 with screw threads. The body portion 2 of the stopper 1 may be made of cork, rubber or plastics while the crown portion may be made of the same material. The screw threads of the cap 5 in cooperation with the threads 9 on the neck are left-hand threads so that on turning the crown anticlockwise the lower portion 7 moves downwards and is torn away from the upper portion 6. An annular groove 12 in the bottle allows for the rim 13 of the cap to move downwards. Closing of the neck of the bottle is performed with the stopper in the usual manner.
Patent GB-1329428-A (GB)
Title: Airfield inset runway light
Inventor: FREDERIKSEN E
IPC: F21W111/00
Filed: 1970-11-25
Abstract: 1329428 Airfield runway lamps LAUR KNUDSEN NORDISK ELEKTRICITETS SELSKAB AS 25 Nov 1970 [26 Nov 1969] 56096/70 Heading F4R An airfield runway lamp comprises a substantially rhombic prism 7 illuminated from opposite sides by lamps 15, preferably of the tungsten-halogen type.
Patent GB-1505659-A (GB)
Title: Apparatus for utilizing solar energy for heating
IPC: F24S23/00
Filed: 1975-04-23
Abstract: 1505659 Solar heating; steam generation S PADAYACHEE 23 April 1975 [31 Dec 1974] 56110/74 Headings F4N and F4A Particulate material passing down a sloping passageway 22 is heated by solar energy via tiers of mirrors 42 and a parabolic reflector 44. The heated material, which may be melted, passes through a heat exchanger 20 in indirect contact with a bath of water 24. The steam given off may pass to an electrical turbine generator 30 or to a desalination plant.
Patent GB-1443998-A (GB)
Title: Electromagnetic control actuator
IPC: H02K26/00
Filed: 1973-12-06
Abstract: 1443998 Fluid-pressure servomotor systems MESSERSCHMITT-BOLKOW-BLOHM GmbH 6 Dec 1973 [28 Dec 1972] 56691/73 Heading G3P [Also in Division H1] A magnetic actuator e.g. for a pressure servo unit of a missile Figs. 1, 2, 4, 5 comprises a housing containing four pairs of electromagnets 12, 12<SP>1</SP>, 13, 13<SP>1</SP>, 14, 14<SP>1</SP>, 15, 15<SP>1</SP> in cruciform array with ends 22, 23, 24, 25 of a cruciform armature 18 positioned between the respective pairs and attached by a square plate 20 to a cylindrical housing 26 of a missile body 27. The magnets of each pair comprise two U-shaped limbs e.g. 14a, 14b with poles facing Fig. 4 and the exciter coils 32, 33, 34, 35 are connected to form two central inputs. Armature 18 is carried at its centre of mass by a bearing stub 29 with a through bore 28 engaging a hollow flexible rod 37 with thickened end 36 located at the centre of plate 38 secured by screws to housing 11, so that the armature is deflectable positively and negatively about two initially perpendicular axes according to the electromagnets 13, 15. Pushrods 42, 43, 44, 45 are connected respectively to limbs 22, 23, 24, 25 of the armature 18 and carry baffles 52, 54 53, 55 in annular recess 30 opposed to nozzles 62, 64 63, 65 press fitted to corresponding bores in flange 20 having other nozzles connected over bores 72 to 75 to working cylinders 82 to 85 where pistons are connected in pairs over rods 86 to 89 and arms 102 to 105 to shafts 96, 97 at right angles, which carry control surfaces 92, 93, 94, 95 which are thus movable in pairs by rods 86, 88 and 87, 89 under pressure of hot gas from generator 70 filtered at 77. The emergent gas passes through bores 72 to 75 to cylinders 82 to 85 under control of nozzles 62 to 65 and baffles 52 to 55  whereby the control surfaces are operatively controlled by pistons in cylinders 82 to 85.
Patent GB-1197840-A (GB)
Title: Degradable Polyolefin Compositions
IPC: C08K5/18
Filed: 1968-12-02
Abstract: 1,197,840. Polyolefin compositions. CHISSO CORP. 2 Dec., 1968 [6 Dec., 1967], No. 57049/68. Heading C3P. Compositions degradable under ambient conditions comprise crystalline polypropylene and an aldol/α-naphthylamine condensate. The compositions may be used for making binding tapes, films, sheets and containers, particularly for agricultural purposes.
Patent GB-1373964-A (GB)
Title: Connecting link for antiskid tyre chains and tyre chains using such links
IPC: B60C27/08
Filed: 1971-12-09
Abstract: 1373964 Chain mail EISEN-UND DRAHTWERK ERLAU AG 9 Dec 1971 [12 Dec 1970] 57170/71 Heading D1K [Also in Divisions B7 and F2] A connecting link, for connecting together ground-engaging members 25 of an anti-skid tyre chain, comprises an open ring 1 defining an opening 4 for receiving the members 25 and terminating at its ends in arms 2 which define an opening 3 facilitating insertion of the members 25 into the opening 4, and removable closure means for closing the opening 3 including an elongate member 6 adapted to press on the ring 1 when the means closes the opening 3. The closure means may also comprise an elongate clamping shoe 7 which engages the ring 1 from the inside and is connected to the member 6 by a screw 8. The shoe 7 may, as shown, have recesses in those portions thereof which engage the ring 1, or alternatively the arms 2 may be formed with steps or shoulders on which the end portions of the shoe 7 are received. The ring 1 may be of circular cross-section, and the member 6 may have holes 9 for receiving the arms 2, and may be rounded to a semi-circular profile at its ends (Fig. 4 not shown). Fig. 9 illustrates a tyre chain utilising a plurality of links 24 of the form described above to connect together plate-like groundengaging members 25 in the manner shown. An alternative tyre chain, Fig. 11, which is of elongate form, is joined at its ends by means of a row of links 24 and is also divided into central 30 and lateral 31 portions by longitudinally extending rows of links 24, each portion 30, 31 being formed from plate-like ground engaging members connected by closed rings. A further tyre chain (Fig. 10 not shown) is similar to that shown in Fig. 11 except that it is not divided into central and lateral portions.
Patent GB-1359409-A (GB)
Title: Compositions for reducing cholesterol and lipid levels
IPC: A61K31/575
Filed: 1972-12-13
Abstract: 1359409 Pharmaceutical compositions INTELLECTUAL PROPERTY DEVELOPMENT CORP 13 Dec 1972 [16 Dec 1971] 57482/72 Heading A5B Cholesterol and lipid levels in mammals may be reduced by administration of a composition comprising (a) an α-, #- or γ-sitosterol and (b) a compound of formula: wherein. R is hydroxy, acyloxy, alkoxy, -NHCH 2  COOH or NHCH 2 CH 2 SO 3 H, X is H and Y is hydroxy or acyloxy or X and Y together represent oxo. Compounds of type (b) specified include 3α, 7α-dihydroxy-5#- chloanic acid, 12-desoxy-cholyltaurine, 12- desoxy-cholylglycine, and 3α, 7α, 12α-trihydroxy-5#-cholamic acid.
Patent GB-1177557-A (GB)
Title: Arylamines
Inventor: HORN IRVIN BRUCE VAN
IPC: C07C/
Filed: 1967-12-19
Abstract: 1,177,557. Arylamines. MOBAY CHEMICAL CO. 19 Dec., 1967 [19 Dec., 1966], No. 57526/67. Heading C2C. Substituted arylamines are prepared by reacting an arylamine with formaldehyde with vigorous agitation in the presence of a catalyst at a molar ratio of amine to catalyst of from 1 to greater than 20, the catalyst being an acid or a salt which hydrolyses to give an acid and having a pka of from less than 1 to greater than 3À5 at a temperature of from 50-110 C. for a period of from 0À01 minute to 2 hours, wherein the reaction is carried out at a temperature of 65-95 C. for 0À01 to 5 minutes when the molar ratio of amine to catalyst is 1-20 and the pka of the catalyst is less than 3À5; the reaction is carried out at 90-110 C. for 2-15 minutes when the molar ratio of amine to catalyst is 1-20 and the pka of the catalyst is 3À5 or greater; the reaction is carried out at 50-90 C. for 1-15 minutes when the molar ratio of amine to catalyst is greater than 20 and the pka of the catalyst is less than 1; and the reaction is carried out at 90-110 C. for 10 mins.-2 hours when the molar ratio of amine to catalyst is greater than 20 and the pka of the catalyst is 1 or greater. The amines used as starting materials may be substituted by, for example, halogen, ether groups, or nitro groups. Long lists of suitable catalysts and starting amines are given. An example is given of the conversion of aniline to a mixture of N-(o-aminobenzyl) aniline and N-(p-aminobenzyl) amine.
Patent GB-1375974-A (GB)
Title: Vapour recovery apparatus
IPC: B65D90/30
Filed: 1971-11-11
Abstract: 1375974 Recovery of volatilized liquid; direct contact condensers PARKER-HANNIFIN CORP 11 Nov 1971 [7 Dec 1970] 57837/73 Divided out of 1375971 Heading B1B Vapour given off by a volatile liquid, e.g. hydrocarbon fuel, in tank 9 flows through line 12 to compressor 13 and the compressed vapour flows through air-cooled, finned tube 68 and aftercooler 70 for distribution by manifold 23 below the surface of an absorbent liquid in vessel 17, whereby the vapour is condensed and absorbed by the liquid. The liquid, which is usually the same as that which gives off vapour in tank 9, is supplied to vessel 17 from reservoir 6 through pipe 51, coil 53 and line 26. The liquid in vessel 17 is preferably maintained at a temperature of about -18C by withdrawing some of it through line 27, passing it through heat exchanger 45 which contains chiller 36 and then returning the cooled liquid to the vessel through spray head 30. Chiller 36 is part of a refrigeration module 33, the condenser 35 of which is cooled by liquid pumped up from reservoir 6.
Patent GB-1449199-A (GB)
Title: Method of converting the electromagnetic spectrum carrier  frquency and an electromagnetic energy receiver for same
IPC: H03D9/06
Filed: 1973-12-13
Abstract: 1449199 Frequency changers; modulators MOSKOV ORDENA LENINA ENERGETICH INST 13 Dec 1973 57845/73 Headings H3R and H3T An electromagnetic energy receiver comprises a frequency converter using an element whose electromagnetic parometers depend upon the intensity, polarization and frequency of the field associated with the incoming signal, and the output frequency of the converter is an integral multiple of the frequency of the local oscillator. In a first embodiment the input signal is fed to a waveguide 15, Fig. 19 in which is located a cylindrical ferrite member II between the pole-pieces 19 of a magnet which biases it to resonance at the signal frequency. Local oscillations of frequency f gc  are applied via filter 16 to windings 20a and an output obtained at twice local oscillator frequency from windings 20b, via filter 17 which rejects the oscillator frequency. Alternatively the windings 20a may be omitted, the incoming signal then being frequency modulated with the local oscillations at a prior point on the circuit. In a second embodiment of the latter kind a ferrite sphere is used, being located in a dielectric winding between an input waveguide and an output cavity resonator tuned to twice local oscillator frequency (Figs. 20, 21, not shown). In a third embodiment a ferrite sphere II, Fig. 22 is located in dielectric window 23 between input waveguide 21 and a coaxial cavity tuned to the output frequency, local oscillations being introduced by means of a coupling loop 20a. The resonance-controlling magnetic field is produced by a magnet having pole pieces 19, while the output is obtained from a coupling loop 25. In a modification, the output is derived via waveguide 30, Fig. 24 which is tuned by means of adjustable plunger 31, and is applied to varactor diode IIb which is biased from a source E A  via resistors R1, R2. A pumping signal is applied from source 32 via dierctional coupler 33 coupled to waveguide portion 27; this is bounded by diaphragm 29 and tuned by means of adjustable piston 34. Rectification is performed by diode IIc which is biased from source E c  via resistors R3, R4 and the output is obtained over capacitor C4 and tuned circuit L 3 C 6 . In a further modification the signal in waveguide portion 35, Fig. 25 which is tuned by means of adjustable piston 35 impinges on diode rectifier IId which is selfbiased by means of resistor R5 and capacitor C7. The output from diode IId is applied via capacitor C8 to a varactor diode IIb followed by circuitry as in the previous modification.
Patent GB-1246268-A (GB)
Title: Steering wheels for road vehicles
IPC: B60Q5/00
Filed: 1967-12-20
Abstract: 1,246,268. Steering wheels. JOSEPH LUCAS (INDUSTRIES) Ltd. 2 Dec., 1968 [20 Dec., 1967], No. 57865/67. Heading B7J. [Also in Division H1] A vehicle steering wheel includes an electrically conductive annular rim member 11 of semicircular cross-section having integral therewith diametrically opposed spokes 12 of similar cross-section; an electrically insulating annular moulding 14 of channel-shaped cross-section secured to the member 11; an annular contact strip 16 secured to the moulding 14 and insulated from the member 11 by the moulding 14; a contact piece 19 in the form of a horn ring slidably mounted in the moulding; and a plurality of conductive compression springs 24 which urge the contact piece 19 away from the contact strip 16, and which electrically connect the contact piece 19 to the member 11, so that the contact piece forms with the contact strip a switch that is closed by engaging the contact piece 19 with the contact strip 16. The moulding 14 includes integral spoke portions 15 which engage the spokes 12 to define a channel along one of which passes an electrical conductor lead 26, which connects the contact strip to the horn.
Patent GB-1184806-A (GB)
Title: Positioning or Locating Device having Sag Compensation Means
Inventor: SCHILER FREDERICK S
IPC: B25H7/04
Filed: 1967-03-17
Abstract: 1,184,806. Positioning and measuring device. PORTAGE MACHINE CO. March 17, 1967 [March 17, 1966], No.57871/68. Divided out of 1,184,805. Heading G1M. The positioning and measuring device of the invention is disclosed in Specification 1,184,805, but the claims are directed towards means for compensating sag in the cross-arm.