baber/WOPTO huggingface dataset:
Patent GB-410551-A (GB)
Abstract: 410,551. Buckles. HOROBIN, D. E., 20, Young Street, Middle Brighton, Victoria, Australia. Dec. 28, 1932, No. 36690. [Class 43.] A prongless buckle comprises two superposed frames consisting of side legs 3, 4 and 11, 12 and front transverse bars 6, 13. The legs 3, 4 of the lower or inner frame are formed with eyes 7 wherein rear transverse bars 14, 16 of the upper or outer frame are journalled, the bars 14, 16 terminating midway of the width of the frame and having downwardly disposed turned-back portions 14<a>, 16<a>, enabling the frame to act as a bell-crank lever. The fixed end of a strap 8 is looped as at 18 round the bars 14, 16 and portions 14<a>, 16<a> and the free end 19 is passed between the bars 6, 13. When the strap is tensioned, the loop 18 acts on the portions 14<a>, 16<a> so as to swing the frames together and wedge the strap end 19 between the bars 6, 13. In order to increase the wedging grip, the bar 13 may be curved or inclined inwardly and downwardly from the side legs to its centre or, alternatively, the bar 6 may be stepped upwardly or outwardly and the bar 13 may then be straight or curved rearwardly.
Patent GB-1494086-A (GB)
Title: Switching circuits
IPC: H02M3/337
Filed: 1974-09-21
Abstract: 1494086 Transistor switching circuits INTERNATIONAL COMPUTERS Ltd 19 Sept 1975 [21 Sept 1974] 41200/75 Heading H3T [Also in Division H2] In a circuit comprising a pair of switch elements TR1, TR2, controlled by a drive circuit, the duration of conduction of each switching element TRI, TR2 is compared with the duration of its turn-on pulse and the result utilized to modify the duration of a reference pulse 10 so that the duration of conduction of the two switching elements TR1, TR2 is the same. As shown in Fig. 1, each switching element TR1, TR2 is turned on for a period equal to the duration of the reference pulse 10 plus the difference in the duration of the input pulse and conducting period of the other switching element. In Fig. 5 (not shown) each switching element is turned on by a pulse the duration of which is equal to the reference pulse 10 minus the difference between the duration of the input pulse and of the conducting period of the same switching element. The invention is applicable to the control of two transistors TR1, TR2 driving the primary of a transformer Tx in a D.C.-D.C. converter. It is shown that either circuit enables the conduction period of the two transistors TRI, TR2 to be the same irrespective of differences in their storage times. The determination of the differences in conducting periods and duration of drive pulse i.e. the storage times of the two transistors may be achieved by the use of common or separate apparatus. Fig. 3 shows a method of deriving the drive pulses for the two transistors. Clock pulses at A are fed to a bi-stable 27 which provides antiphasesquare waves to AND gates 28, 29. Pulses DD representing the collector currents of the two transistors are derived, e.g. from an auxiliary winding on the transformer Tx and fed to an OR gate 30 and then to an exclusive OR gate 31 together with pulses B representing the combined drive pulses for the transistors. A constant current source 33 is turned on for the storage period of the transistors, obtained from the difference in waveforms B and E. This duration is converted into an analogue voltage by charging capacitor 34. Capacitor 37 is charged at the same rate from constant current source 38, starting from the beginning of drive pulses for the transistors. Comparator 39 provides an output when capacitors 34 and 37 are charged with the same voltage, this output opening a switch 40 and allowing capacitor 41 to charge from a constant current source 42 until a reference voltage is reached when comparator 43 produces a step K which is inverted at 44 and provides waveform B for turning on the transistors. Constant current sources 33, 38, 42 may be formed by a composite arrangement of three transistors and three Zener diodes. The output voltage of the D.C.-D.C. converter may be regulated by comparing the output with a desired value and modulating the reference pulse width.
Patent GB-1080700-A (GB)
Title: Air purification unit
Inventor: WARD HENRY DEWICK
IPC: B01D46/30
Filed: 1965-09-29
Abstract: 1,080,700. Adsorber construction. ERICSSON TELEPHONES Ltd. July 22, 1966 [Sept. 29, 1965], No. 41306/65. Heading B1L. Adsorber 1 has 2 beds 7 of adsorbent, e.g. active carbon, sandwiched between perforated plates 5 and 6 with a pump in chamber 3 between the two beds. Air enters at 9 and leaves at 10.
Patent GB-848617-A (GB)
Title: Improvements in or relating to the preparation of anhydrite
IPC: C04B11/05
Filed: 1958-12-22
Abstract: Anhydrite, having a particle size of 0.4 to 0.8 microns, is prepared by forming a slurry of gypsum of size 200 mesh (United States Standard) or less, and containing from 20-50% solids, adding between 5 and 50% of the slurry with rapid agitation, to a sulphuric acid of 74-80% concentration at a starting temperature below 70 DEG C., the slurry being added to the acid at a rate of from 0.0125 to 1.0 part calculated as CaSO4 for each part of sulphuric acid calculated as 60 degrees Baum<\>e acid per minute, and maintaining the temperature between 20 DEG C. and 80 DEG C.; adding the remainder of the slurry, and heating to between 80 DEG C. and boiling to convert all the gypsum to anhydrite.  Preferably the acid concentration at the end of the first addition is between 20 and 50%.  The gypsum slurry may be prepared by treating lime or limestone of less than 200 mesh, which preferably contains less than 0.1% of colour-degrading impurities, with waste sulphuric acid, which may contain between 0.1 and 2.0 grams of suspended titanium dioxide per litre, to give a slurry with an acid concentration of between 1 and 100 grams of sulphuric acid per litre.  The anhydrite product may be used in the preparation of anhydrite-titanium dioxide pigments, for example by the coprecipitation method.
Patent GB-856095-A (GB)
Title: A new or improved apparatus for cleaning the sealing surfaces of the doors and door frames of horizontal coke ovens
Inventor: RANDELL EDWARD CHARLES
IPC: C10B43/04
Filed: 1958-12-23
Abstract: 856,095. Cleaning coke-oven doors and frames. WOODALL-DUCKHAM CONSTRUCTION CO. Ltd. Dec. 23, 1958, No. 41420/58. Class 99(2). A coke-oven door and frame having sealing surfaces has the latter cleaned by mechanically propelled scraper tools so correlated that at no time is any scraping carried out in an upward direction. Top horizontal scrapers work outward from the centre of the surface 22 and at the limits of their rectilinear movement are swept through 90 degrees to clean corners 24, 25 respectively and bottom scrapers sweep round corners 26, 27 before moving to the centre of surface 23. Each verticaal surface is dealt with by two scrapers whose paths overlap as shown by the arrows. The apparatus is in two subassemblies each running on rails, the one moving up to the door when held in the conventional rack, the other acting on the door frame. The scrapers are driven by chain drives, those at the top and bottom having friction clutches to regulate one or the other of the two movements, rectilinear or rotary, and those at the sides being advanced and retracted by hydraulic rams. The mechanism and a hydraulic control system are disclosed in great detail.
Patent GB-1378061-A (GB)
Title: Method and compositions for combating liver fluke
IPC: A61K31/165
Filed: 1972-09-08
Abstract: 1378061 Substituted formanilide BEECHAM GROUP Ltd 15 Aug 1973 [8 Sept 1972] 41696/72 Heading C2C [Also in Division A5] The compound methylene bis-4,4<SP>1</SP>-formanilide (believed novel) is prepared by reacting a compound of formula in which A is a hydrogen atom or -CO-H group with a formylating derivative, e.g. a mixture of acetic anhydride and formic acid.
Patent GB-1324272-A (GB)
Title: Method and apparatus for transforming iron-containing waste slurries into granular solid material
IPC: C21B5/00
Filed: 1970-09-02
Abstract: 1324272 Granulating metallic slurry ITALSIDER SpA 2 Sept 1970 [10 Sept 1969] 41913/70 Heading B5A [Also in Division C1] Metal containing slurry waste from metallurgical operations is thickened by decanting, dehydrated by centrifuging or filtering, then dried, granulated, and sieved to obtain granules of a predetermined size. Drying and granulating may be performed in an inclined rotary drum 110. The higher end being provided with a burner and inlet port, and the lower end with an outlet port. The slurry 122 moves in cocurrent with combustion products 121. Stationary scrapers 31 prevent encrustation, and ribs 32 break up the drying material, whilst helical ribs 123 slow down the passage through the final stages and promote rounded granules.
Patent GB-1498084-A (GB)
Title: Solder pots
IPC: B23K3/08
Filed: 1976-10-12
Abstract: 1498084 Soldering ADCOLA PRODUCTS Ltd 12 Oct 1976 [14 Oct 1975] 42086/75 Heading B3R [Also in Division F4] An electrically heated solder pot comprises a body 1 formed of aluminium or aluminium alloy provided with a stainless steel lining 9. Preferably the stainless steel lining is spun in position. An integral stem 2 projects from the bottom of the body 1 and carries an electrical heating element 3 wound directly on the stem 2. The bottom of the stem 2 is formed with a socket 4 for fitting to a mounting 5. In an alternative embodiment (not shown) the solder pot may be heated by an electric element disposed between the bottom of the pot and a base plate.
Patent GB-1353953-A (GB)
Title: Range expansion method and apparatus for multichannel pulse analysis
IPC: G01N15/12
Filed: 1971-09-09
Abstract: 1353953 Analysing data COULTER ELECTRONICS Ltd 9 Sept 1971 [11 Sept 1970] 42131/71 Heading G4H  In an analysing system in which successive input voltage pulses from a source 14 (Fig. 1) are digitized in an analogue-digital converter 12 into one of for example a hundred levels and the counts accumulated in the appropriate part of a hundred channel memory 10, to examine more accurately the pulses that lie between certain levels, e.g. 25V and 75V the incoming pulses are amplified by a factor, e.g. 2 and an offset voltage (in this case 50V) is subtracted from the amplitude pulses before digitization. In this way 25V inputs are applied as a zero input to the digitizer and 75V inputs are applied as 100V i.e. as a full scale input and consequently all the memory channels are used for examining only a part of the range. As described control 22 is adjusted in accordance with the desired amplification factor, potentiometers 28 and 30 in offset control 24 being employed to set the zero and upper levels. In the embodiment of Fig. 3 (not shown) whenever an input pulse exceeds the offset voltage, a comparator (42) enables a sample and hold circuit (48) to store an input pulse from which the offset voltage has been subtracted. After amplification by the selected amount the resulting signal is digitized and stored for read out to a recorder. The pulses may be derived from a Coulter counter (R.T.M.).
Patent GB-1057647-A (GB)
Title: Improvements in or relating to teleprinter apparatus
Inventor: MASON FREDERICK PERCIVAL
IPC: H04L25/40
Filed: 1964-10-16
Abstract: 1,057,647. Telegraphy. CREED & CO. Ltd. Oct. 16, 1964, No. 42305/64. Heading H4P A telegraph repeater comprises a source of very high-speed clock pulses which, when a start bit is detected, are replaced by centresampling bit rate clock pulses. Double current characters received on line 1, 2 feed the ring modulator shown, which is also fed by the clock source 9. Unit 10 separates the resultant pulses on Mark and Space leads, 11 and 17. The Start bit on lead 17 controls source 9 to give 30 m.sec. after the Stop Start transition, serial bit-rate clock pulses to the modulator and to unit 10, and also to open gates 12-16 in succession. Toggles 18-22 are thus set up in accordance with the bit polarity at the centre of each bit. The parallel output feeds a printer, and the clock reverts to giving high-speed pulses. Modifications for use with single current signals are described, Figs. 5 and 6 (not shown).
Patent GB-862284-A (GB)
Title: Improvements for producing concentrated coffee extract
Inventor: KRAUT THEODORE
IPC: A23F5/26
Filed: 1959-12-14
Abstract: Coffee dust is separated from ground coffee by a screen, e.g 20 U.S. standard and formed into pellets, e.g. by bonding with dried coffee extract and added to the ground coffee for percolating.
Patent GB-1532568-A (GB)
Title: Coaxial electrical connector
IPC: H01R13/646
Filed: 1976-10-13
Abstract: 1532568 Coaxial electrical connectors SPINNER GmbH ELEKTROTECHNISCHE. FABRIK 13 Oct 1976 [20 Oct 1975] 42552/76 Heading H2E A coaxial electrical connector comprises a connector body 10 with an external flange 12 and an external shoulder, and a coupling ring 16 with an internal flange 14 positively engageable behind the external flange 12 so as to allow rotation of the ring 16 while providing for axial thrust transmission through the flanges 12, 14. As described, the connector is formed with the internal diameter of the internal flange 14 equal to or slightly greater than the outer diameter of flange 12, the inner flange 14 being radially deformed from the Fig. 1 to the Fig. 2 position by means of a flanging tool embodying a set of rollers or a squeezing mechanism.
Patent GB-872239-A (GB)
Title: Improvements in leg rings or bands for pigeons and other birds
IPC: A01K35/00
Filed: 1959-12-15
Abstract: 872,239. Leg-ring seals. SCHULTE, W. Dec. 15, 1959 (Dec. 22, 1958], No. 42568/59. Class 146(2). A leg-ring for birds consists of a doublewaliled cylinder a of transparent material containing, in the space between the two walls, an information slip b the space being hermetically sealed, e.g. in the case of plastic material by heat-welding.
Patent GB-1121696-A (GB)
Title: Improvements relating to the development of light-sensitive silver halide material
Inventor: WILLEMS JOZEF FRANS
IPC: G03C1/043
Filed: 1965-10-07
Abstract: Compounds of the formulae <FORM:1121696/C2/1> <FORM:1121696/C2/2> <FORM:1121696/C2/3> <FORM:1121696/C2/4> <FORM:1121696/C2/5> wherein R1-R5 represent alkyl or aralkyl radicals, R1 and R2 may complete an heterocyclic nucleus, R5 may be hydrogen, X is an anion, R is a bivalent organic radical and Z completes an heterocyclic nucleus are prepared by alkylating or aralkylating tertiary amine-N-oxides. Preparations 1-11 relate to compounds prepared from pyridine or triethylamine N-oxides.
Patent GB-1169257-A (GB)
Title: Improvements in or relating to the continuous baking of bread
IPC: A21C13/02
Filed: 1967-09-19
Abstract: 1,169,257. Continuous proving and baking apparatus and process. BAKER PERKINS Ltd. 19 Sept., 1967 [19 Sept., 1966], No. 42670/67. Heading A2A. [Also in Division B8] In baking bread, extruded dough is cut into lengths, which are successively moved, lengthwise, on to means extending across a conveyer, so that each layer of dough is disposed across and within the width of the conveyer, and is then dislodged from said means, and falls on to the conveyer, which carries the lengths of dough through a treatment zone, e.g. a proving chamber connected to a baking chamber or oven. In continuous apparatus, Figs. 1 and 2, for proving and baking long loaves of bread, dough is extruded, through a nozzle 73, on to the upper run of an endless, travelling belt 41, Fig. 2, and, during transfer on to' the upper run of another travelling conveyer belt 75, is cut into suitable long lengths by a knife 81, which is reciprocated by a cylinder-device 82 actuated by fluid pressure. After each cut, the speed of the belt 75 is momentarily increased to provide a space between successive lengths of dough received thereon. A pusher 94, pivoted at 94a, Fig. 1, and reciprocated by a cylinder-device 95 actuated by fluid pressure, pushes each length of dough D from the conveyer 75 into a pan 32 of a pluralitv of such pans, which are pivotally suspended from and between the two parallel chains of an endless conveyer 27. This convevor travels around chain-engaging sprockets 28b. 28a, 28 and a zig-zag path, upwardly through a proving chamber 11, then into a baking chamber or oven 24, through a horizontal connecting tunnel 25, and then around chain-engaging sprockets 29, 29a, 29b, and in a zig-zag path, downwardly through the baking chamber 24. Part of the conveyer 27 projects through an opening 59 in the lower part of the chamber 24, so that a pair of rubber suction cups 97 can. be lowered on to the two baked loaves in a pair of pans 32, then raised to remove the loaves from the pans, and then moved longitudinally to deposit the loaves on a transverse discharging conveyer C. The lowest run or bight of the conveyer 27 leaves the baking chamber 24 through an opening 60 and enters the proving chamber 11 through an opening 61. Between the openings 60 and 61 compressed air is blown, through nozzles 62, to remove crumbs and dust from the emptied pans, and oil is then sprayed into them from nozzles 63. Mechanism is provided for adjusting the distance between sprockets 28a and 28b in the proving chamber 11 and thus the effective length of the associated conveyer bights, and similar mechanism is provided for compensatingly adjusting the distance between sprockets 29a and 29b in the baking chamber 24, and thus the effective length of the associated conveyer bights, so that the overall length of the conveyer 27 is unaltered and has no slack bights. Conventional means 16 for circulating and controlling the temperature and humidity of the air in the proving chamber 11, and conventional heaters 23 for heating the baking chamber 24, are provided.
Patent GB-986957-A (GB)
Title: Ejector type scraper
IPC: E02F3/64
Filed: 1963-10-30
Abstract: 986,957. Earth-moving scraper bowls. M. R. S. MANUFACTURING CO. Oct. 30, 1963 [Oct. 31, 1962] No. 42892/63. Heading E1F. An ejector plate movable through the bowl of the scraper by an actuator of substantially constant power output is so connected to the actuator that the plate in the initial part of the discharging is moved at relatively slow speed but with great force and vice versa for the last part of said movement. The actuator, a ram 66, is connected to the ejector plate 58 by the pivoted linkage 70, 76. The change in the conditions of movement of the ejector plate occur when the rollers 82 on which the lever 76 is supported from tracks so secured to the fixed structure associated with the scraper bowl engage stops 85 in the tracks.
Patent GB-1090906-A (GB)
Title: Improvements in or relating to dielectric materials
IPC: H01B3/04
Filed: 1964-10-21
Abstract: 1,090,906. Piezo-electric elements. C. F. PULVARI. Oct. 21, 1964 [Oct. 24, 1963], No. 42914/64. Headings H1E and H1K. A body having ferro-electric, ferri-electric and piezo-electric properties consists of platelets or flakes of a mixed bismuth oxide having a layered crystal structure bonded together by an inorganic binder. The mixed bismuth oxide may be formed by melting Bi 2 O 3  with TiO 2  to form mixed crystals of Bi 4 Ti 3 O 12 , or by similarly forming a compound of the family (Bi 2 O 2 )<SP>2+</SP>(M m-1 P m O 3m+1 )<SP>2-</SP> in which M and P are any of a number of substances such that the resulting compound has the required crystal structure. PbBi 2 Nb 2 O 9  is quoted as a typical member of this family. Up to 10% of impurities, either in addition to the elements of the crystal or in substitution for some of them, may be present: lanthanium, yttrium and zirconium are mentioned in this connection. The binder may also be a mixed bismuth oxide-e.g. a bismuth borate glass or a compound such as Ba 2 Bi 4 Ti 5 O 18 , provided such compound has a melting point lower than that of the substance constituting the crystals. The binder is formed by mixing a suitable powdered oxide or mixture of oxides with the crystals and subjecting the mixture to heat and pressure. Electrodes are attached to the body to adapt it for use as a ferro-electric capacitor or piezoelectric transducer. If such a device is required to be permanently polarized a suitably high D.C. potential is applied to the electrodes, preferably while heating the device to above its Curie temperature.
Patent GB-1155079-A (GB)
Title: Drive for Auxiliary Equipment for Internal Combustion Engines, particularly in Motor Vehicles
IPC: F16H3/54
Filed: 1967-09-21
Abstract: 1,155,079. Variable-speed gearing. DAIMLER-BENZ A.G. 21 Sept., 1967 [27 Sept., 1966], No. 42958/67. Headings F2D and F2U. In a drive for auxiliary devices of a motor vehicle I.C. engine, in which the devices, e.g. the generator, fan, and oil pump for servo steering, are driven by a multiple V-belt pulley 13 mounted on the crank-shaft 12, the pulley 13 is driven through a two-speed, three-element planetary gear train 20 comprising a driven ring gear 35 fast with the pulley, a driving planet carrier 29 coupled to the crank-shaft, and a sun 34 clutched to crank-shaft 12 by a screw freewheel 21 for direct drive at high engine speeds or braked by an electromagnetic brake 19 for a step-up ratio at low engine speeds, thus avoiding excessive driving speeds for the devices at high engine speeds whilst providing sufficient power for these devices at low engine speeds. The brake may be applied manually, or automatically in response to an engine speed monitor (not further described). The planet carrier 29 is driven by three axial claws 27 on a driving flange 16 fast with the crank-shaft 12, the claws 27 engaging in recesses in the carrier and carrying helical springs (31), Fig. 2 (not shown), in blind bores 30 to engage one side of the recess, rubber stoppers (32) on the claws abutting the opposite sides of the recesses. Pulley bearing lubrication is provided by a scoop tube 45 fast with the sun 34 which delivers oil to the bearing from the pulley body via bore 46.
Patent GB-1354794-A (GB)
Title: Radiography apparatus
IPC: A61B6/00
Filed: 1971-09-15
Abstract: 1354794 Radiography apparatus SIEMENS AG 15 Sept 1971 [16 Sept 1970] 43074/71 Heading H5R [Also in Division G1] In radiography apparatus in which a cone 2 of rays is directed towards a radiation-sensitive film 3, data on a card 4-e.g. relevant to a patient being radiographed-is reproduced on an edge portion of the film during the taking of the radiograph, and a shutter 5 has control means controlling its displacement from a first position clear of the radiation cone to a second position in which it screens the edge portion of the film, in such a manner that the radiation dose received by the edge portion is limited to a preselected valve appropriate to the clear reproduction of the data. In the embodiment shown, the shutter is spring-urged into its screening position upon retraction of the stops 11 and 12 by a pair of electromagnets (13 and) 14, which magnets are connected in a circuit in which the light from a fluorescent screen located in the cone is received by a photo-element which charges an adjustable capacitor until the potential difference thereacross breaks down a Zener diode to render a transistor conducting and energize the magnets (Fig. 2, not shown). In an alternative arrangement, with an X-ray tube as ray source, the electromagnets are energized under the control of a time switch which is coupled to the manual mA and kV adjustment means of the tube.