baber/WOPTO huggingface dataset:
Patent GB-1349024-A (GB)
Title: Surface heating units
IPC: F24C15/10
Filed: 1971-07-20
Abstract: 1349024 Electric heating GENERAL ELECTRIC CO 20 July 1971 [24 July 1970] 33915/71 Heading H5H [Also in Divisions F3-F4] A solid plate surface heating unit mounted in an apertured recess on a cooker top 34 comprises a plate 10 of glass-ceramic material which is supported on top of a heat spreader plate 14 of composite metal material, a metal sheathed electrical heating coil 20 brazed to the underside of the composite plate, a reinforcing member in the form of radial struts 28 which are fastened along one edge to the underside of the plate 14, a reflector pan 30 which supports the whole assembly, and a temperature limiting means comprising a high temperature responsive bulb 62 in thermal contact with the heat spreader plate and connected by a capillary tube 66 to a temperature responder 64 attached to the reflector pan which breaks the heating circuit of the coil 20 when the plate temperature reaches a certain limit, e.g. 1200 C. The plate 10 may be of such materials as quartz, high silica glass, high temperature glasses as well as glass-ceramic materials which all have electrically-insulating and thermally-transmissive properties and are all resistant to wear, thermal shock and spillage. The composite plate 14 comprises a thin central core of such high thermal conductivity metals as copper, aluminium and silver sandwiched between skins of oxidation and corrosion resistant metals such as stainless steel, nickel and chromium, furthermore the plate 14 may have a ceramic coating, e.g. of porcelain enamel or silica which also gives increased thermal radiation from the plate. The heating unit is mounted on a downwardly recessed ledge 36 of the cooker top by means of a trim ring 38, circumferentially spaced clips 46 which engage through slots 40 in the ring to releasably hold down the latter and an asbestos gasket 51 to seal the unit from spillage. The temperature sensor has the form of a bulb 62 filled with a fluid such as sodium potassium. In an alternative arrangement the glass-ceramic plate 10 has a central hole through which a spring loaded sensor is put in direct contact with a cooking utensil. A manual selector switch 72 is connected across the power leads L 1  and L 2  to the heating coil. An earthing circuit 73 is provided for the composite plate. Instead of the electrical heating element shown, a gas burner may be used (see Divisions F3-F4).
Patent GB-1483666-A (GB)
Title: Process for carrying out heat exchange between a heat-carrying gas and a powder
IPC: F26B17/10
Filed: 1974-08-01
Abstract: 1483666 Preheating feed material ALUMINIUM PECHINEY 1 Aug 1974 [6 Aug 1973] 33923/74 Headings F4B and F4S A powder, for example alumina, is indirectly heated by gas, for example issuing from a rotary kiln 1, in a heat exchanger compartment 6, thereby generating gas which fluidizes the powder, the powder falling from an upper fluidization chamber 24 under the action of gravity in a substantially vertical tube 22, which may be disposed within the compartment 6, Fig. 2 (not shown), into a lower fluidization chamber 25 from which the powder passes upwardly under the action of the generated gas in a series of tubes 23, each of smaller diameter than the tube 22, to the upper chamber 24, the powder then partly leaving the chamber 24 and the remainder circulating within the compartment. As shown in Fig. 1 the gas from the kiln 1 passes through the compartment 6 into an electrostatic filter 13, purified gas being discharged into the atmosphere through a chimney 14. The powder is fed into the chamber 6 by means of a feeder 12, the heated powder leaving the chamber at outlet 11 to be fed into the kiln 1 for discharge at 5. The compartment 6 may house a series of stages of the pipes 22 and 23, Fig. 2 (not shown).
Patent GB-833274-A (GB)
Title: Improvements in or relating to canopies for buildings
IPC: E04F10/00
Filed: 1957-10-31
Abstract: 833,274. Door canopies. COWBURN, J. Oct. 24, 1958 [Oct. 31, 1957], No. 33965/57. Class 20(4) A door canopy comprises a timber structure covered with metal and having metal bearers 15 projecting to engage sockets 24 in a cavity wall 23. An insert portion 29 is formed in the bearers to engage with the socket under the influence of inserted packing 30. The sockets 24 may be supplied welded to a plate 26 which acts as a wall tie. Top and bottom metal pressings 17, 19 are riveted together to form the metal cladding.
Patent GB-818961-A (GB)
Title: Improvements in or relating to carburetters
IPC: F02M19/035
Filed: 1955-11-28
Abstract: 818,961. Carburetters. SIREJOLS, A. P. Nov. 28, 1955 [Nov. 26, 1954], No..34021/55. Class 7(3) A carburetter comprises a primary mixing chamber having a central tube therein and a secondary mixing chamber having a second central tube provided therein and channels for supplying air to the mixing chambers the channels being united in a common channel open to the atmosphere through a calibrated orifice. In Fig. 2 suction which acts through the idling port 41 and through emulsifying air orifices 1, 2 during idling, causes the fuel to rise in the annular space around the orifices 7. When the throttle valve is opened this charge of fuel is freed and facilitates discharge ot fuel through the nozzle 8. Fig. 3 shows a modified form of nozzle 8. In another modification the nozzle includes a member for imparting a whirling motion to the mixture. In another modification, Fig. 5, the member 12 for imparting the whirling motion is adjustable by means of the arm 14. The member 12 is fixed to the upper part 13 of the tube and can be subjected to a torsional movement which modifies its pitch. The float may be of polyvinyl chloride foam coated with varnish or glue. In Fig. 8 the pump 26 supplies fuel to an overflow chamber 27 and a float 30 and needle valve control the return of fuel to the suction side of the pump. The edge 28 may be lower towards the front of a vehicle in which the carburetter is used. Baffles 31 are fitted adjacent the inlet to the chamber 27. Fig. 9 represents a perspective view of a carburation assembly comprising a double manifold or turbulence tube 32 a conventional inverted carburetter 33 and a horizontal carburetter 34 according to the invention. The control of the horizontal carburetter comprises an arrangement permitting the postponement of the setting in action thereof in order to render the idling or secondary mixing circuit of the horizontal carburetter ineffective. This arrangement allows regulation of the idling of the inverted carburetter without influencing the position of the lever 39 controlling the throttle valve of the horizontal carburetter. The throttle valve of the horizontal carburetter is offset towards the vertical according to the dotted line 40 in Fig. 2. The secondary circuit may have larger multiple and staggered orifices. The carburetter of the invention can be made in various forms, for example inverted, vertical, double body or other known variations.
Patent GB-365695-A (GB)
Title: Improvements relating to electric motor control gear
IPC: H02P1/34
Filed: 1930-11-12
Abstract: 365,695. Master control of A. C. motors; thermal switches. ELECTRICAL APPARATUS CO., Ltd. and WALTON, J. R., Vauxhall Works, South Lambeth Road, London. Nov. 12, 1930, No. 34061. [Classes 38 (iii) and 38 (v).] Sequential contactors in a starting system are controlled by thermal devices, and a master thermal device is provided to ensure the lapse of sufficient time for the contactor thermal devices to return to their normal condition, after being cut out of circuit upon the completion of the starting operation, before fresh operation of the system can take place. Upon depression of a starting button ST, a switch C is closed, and maintained over auxiliary contacts 17. The primary b of a transformer T is energized, and thermal devices MT, T<2>, T<3> receive current from its secondary so that contacts 21, 31 are closed at time intervals to energize contactors C<1> C<2> which cut out rotor resistance r<1>, r<2>, r<3> in two steps. The contactors C<1> C<2> have auxiliary contacts 26, 32 respectively by which they are maintained closed independently of the devices T2, T<3>. When the contactor C<2> closes, contacts 19, 25 are opened, which interrupt the primary circuit of the transformer T and the maintaining circuit of the contactor C<1> respectively. The thermal device MT is normally closed, and is arranged to ensure that the starting operation may be commenced by the button ST only after an interval following a previous actuation. The thermal devices comprise pronged bimetallic strips through which the current passes, and the normally fixed contact of each device is formed by the surface of a cam-shaped plate which is provided with a handle for setting purposes. A resistance coil may be connected in parallel with the bimetallic strip, to have a heating effect on it.
Patent GB-1394346-A (GB)
Title: Manufacture of fretted fingerboards or stringed musical instruments
IPC: G10D3/06
Filed: 1973-07-17
Abstract: 1394346 Stringed instruments N WOOD 26 Sept 1973 [17 July 1973] 34078/73 Heading G5J To increase life, and to facilitate change of the fret bars of a stringed instrument, e.g. guitar, the finger board is jig-drilled with holes (Fig. 2), slightly smaller than the stainless steel wires used for frets, breaking through the surface so that on insertion the frets project slightly and are gripped tightly. When wear of the bars takes place, they can be withdrawn and rotated slightly to present unworn surface. In an alternative embodiment (Fig. 3), grooves are cut in the finger board and are filled with cement which bonds to the board but not to the bars. Before the cement has hardened the cylindrical bars, are set in position, and are capable of later withdrawal. Wood dust in epoxy resin is recommended as cement. Any weakening of the neck by holes or notches can be compensated by insertion of a steel or other metal bar under the finger board, pre-bent downward to cancel the upward bend due to string tension.
Patent GB-1313224-A (GB)
Title: Dc motors
IPC: H02K26/00
Filed: 1970-07-14
Abstract: 1313224 Voltage measuring GENERAL ELECTRIC CO 14 July 1970 [25 July 1969] 34092/70 Heading G1U [Also in Division H2] In an null-balance type instrument having a pointer or tape display driven by a D.C. electric motor (see Division H2), a spring 48 provides a force counteracting the motor torque and the motor armature windings are energized through a transistor 52 whose base voltage is provided by an operational amplifier 54 having as its two inputs the measured signal E s  and a feedback signal derived from a potentiometer 24 whose wiper is driven by the motor rotor. The measured quantity may be temperature or pressure.
Patent GB-393332-A (GB)
Title: Process for imparting a globular shape to salts
IPC: B01J2/12
Filed: 1931-12-09
Abstract: Hydrated or partially hydrated metallic salts, or mixtures thereof, with or without other substances, are converted into globular form by subjecting them to the action of a drying gas, with attrition, in a revolving drum provided with a filter to retain the dust of the salt. The salt, which originally is preferably in granular form, passes (without melting) almost entirely through a transient stage of dust, the dust applying itself round partially or wholly dehydrated granules acting as nuclei and crystallizing thereon to form the pellets.  The drying air may contain some moisture and may be heated to a little below the melting-point of the hydrate.  If the original material is anhydrous, water or a solution of the salt is added to produce a magma setting to a solid mass which is then crushed and subjected to the treatment.  In shaping sodium carbonate, other substances suitable for washing, such as sodium phosphate, sodium perborate, or urea, may be added.  Examples are given of the shaping of (a) sodium sulphate, (b) sodium carbonate, (c) sodium carbonate and sodium perborate, (d) sodium sulphate and a dyestuff such as sulphur black, (e) copper sulphate; and other salts such as alums, alkali metal phosphates, borates, and sodium chromate are referred to.
Patent GB-613998-A (GB)
Title: Improvements in or relating to reel-operated cloth-dyeing vats
IPC: D06B3/22
Filed: 1945-12-17
Abstract: <PICT:0613998/IV (c)/1> A reel-operated dyeing vat 1 has its rear wall 2 inclined at a small angle to the horizontal and is provided with a tapered dye mixing compartment in the bottom portion below the delivery side of the goods.  A partly perforated partition 4 divides the vat from the mixing compartment.  Dye is supplied through the pipe 9 and steam through pipe 8.  Specification 613,999 is referred to.
Patent GB-168812-A (GB)
Title: Improvements relating to the electrical treatment of ferrous metals during casting
IPC: B22D27/02
Filed: 1920-06-03
Abstract: 168,812. Wickett, J. H. June 3, 1920. Purifying and refining.-The quality of ferrous metal is controlled while it is being cast by causing it to rotate in a magnetic field. This heats the metal and allows certain constituents such as silicon and carbon to react. The mould P has a core Q, resting on a transformer core W as in Specification 154,711, and a runner 23 with a conical basin 21 and tangential inlet 22. Cores R, S are arranged on opposite sides of the rotating metal in the basin. Reference has been directed by the Comptroller to Specification 106,313.
Patent GB-1163781-A (GB)
Title: Improvements in or relating to Electrolytic Conductivity Measuring and Regulating Apparatus
Inventor: WARMOTH DENNIS
IPC: G05D21/02
Filed: 1966-07-29
Abstract: 1,163,781. Automatic mixture control. ELECTRONIC SWITCHGEAR (LONDON) Ltd. Oct. 30, 1967 [July 29, 1966], No. 34276/66. Heading G3R. The concentration of a liquid solution is automatically maintained at a predetermined value by a control system which is generally similar to that described in Specification 1, 148, 091 and has additional circuitry to ensure:- (1) that if the conductivity of the solution reaches a predetermined upper limit above the predetermined value an alarm is operated or the means controlling the supply of concentrate is over-ridden or the whole plant is automatically shut-down. (2) that if the conductivity of the solution does not return to its predetermined value in a predetermined time after falling below it, an alarm is operated. As shown the conductivity measuring cell MC i,s connected in a compound bridge network BN having parallel-connected pairs of arms R2, R3 and R5, R6 whose tappings VR1, VR2 respectively determine the predetermined upper limit and the predetermined value. These two outputs of the bridge are respectively fed to field effect transistors TR1, TR8 forming part of circuits for respectively controlling relays A/3, B/3 which in turn respectively control the upper limit alarm and the concentration adjustment means, the two relay control circuits being generally similar in layout and method of operation. The low conductivity alarm is controlled by a relay C/2 which operates at a predetermined time after de-energization of the relay B/3 consequent upon a fall of conductivity below the predetermined value, the time constant of members C27, R60 providing the predetermined time delay.
Patent GB-486792-A (GB)
Title: Improvements relating to twisting-spindles provided with roller bearings
IPC: G02B6/04
Filed: 1936-12-14
Abstract: 486,792. Twisting spindles. BARMER MASCHINENFABRIK AKT.-GES. Dec. 14, 1936, No. 34302. Convention date, Jan. 20. [Class 120 (ii)] Twisting-spindles, especially for twisting artificial silk, provided with a collar roller bearing 2 at or near the centre of gravity of the apparatus are arranged so that the unbalanced force due to the rotating masses is directly taken by the bearing. The spindles 3, which are carried in a base piece 4, are thereby enabled to be of smaller diameter than would be required if the bearing were freely mounted.
Patent GB-1241805-A (GB)
Title: A method and apparatus for the continuous production of foam plastics webs of rectangular cross-section
IPC: B29C44/30
Filed: 1968-07-18
Abstract: 1,241,805. Casting foamed webs. METZELER A.G. 18 July, 1968 [18 July, 1967], No. 34422/68. Heading B5A. In the continuous casting of a web of foam plastics means are provided to ensure that the web has a flat top. The plastics is cast in an open-topped channel having a moving base and stationary side walls and a flexible single or multipart lining. At the start of the channel the side walls are so shaped that the lining wall has an angular or curved configuration from which it is gradually diverted to assume a vertical disposition so that as the plastics expands and rises a flat top is produced.
Patent GB-1360224-A (GB)
Title: Bias control of electrographic development electrode
IPC: G03G15/06
Filed: 1971-07-22
Abstract: 1360224 Developing apparatus EASTMAN KODAK CO 22 July 1971 [23 July 1970(2)] 34472/71 Heading G2H Electro-photographic developing apparatus comprises a developing electrode earthed through a resistance of 10<SP>6</SP> -10<SP>11</SP> # so that the potential induced on the electrode is proportional to the potential of the part of the electrostatic latent image being developed, the electrode being connected to a circuit which samples the image potential, stores the sample and prevents the electrode potential from falling below a value related to the sample value. As shown, the electrode is constituted by a magnetic brush developing roller 8 connectable to resistors 40, 42, 41 of 10<SP>8</SP>, 10<SP>6</SP> and 10<SP>7</SP> ohms respectively. As an image bearing sheet 16 is fed over the brush, the potential induced in the brush is divided at 46B and stored by a capacitor 48. When the leading edge of sheet 16 trips a switch 30, a relay 46 disconnects the capacitor from the divider 40, 42, connects it to an amplifier circuit 50, 64, 72 and switches in resistor 41. If the potential of the brush falls e.g. when the trailing edge 34 is passing over it, a diode 74 conducts and amplifier 72 applies a bias potential. If the image comprises positive charge, contacts 52A, B, C, D are changed over. Development may alternatively be by liquid, aerosol, powder cloud, cascade or metal-coated fur brush.
Patent GB-1114155-A (GB)
Title: Guanidino derivatives
Inventor: BADCOCK GEORGE GERALD
IPC: C07C279/12
Filed: 1964-08-24
Abstract: Novel guanidines of the formula <FORM:1114155/C2/1> wherein each of R1 and R2 is a hydrogen atom or an alkyl group, each of R6, R7 and R8 is an alkylene group separating adjacent nitrogen atoms by a chain of at least two carbon atoms, the total number of carbon atoms in the straight chain between the groups G1 and G2, excluding branching groups, being always greater than 12, n is 0 to 4 and each of G1 and G2 is a group of the formula <FORM:1114155/C2/2> wherein each of R3, R4 and R5 is a hydroge atom or a C1- 4 alkyl group, and their physiologicall acceptable acid addition salts, are prepared by (a) reacting a polyamine of the formula <FORM:1114155/C2/3> with a thiourea of formula <FORM:1114155/C2/4> in which R9 is an alkyl or aralkyl group, or an acid addition salt thereof, or with cyanamide, or with N-nitrosoguanidine or an N-alkyl-N-nitrosoguanidine, or with a cyanogen halide followed by reaction with ammonia or an amine, or (b) reacting a substituted thiourea of formula <FORM:1114155/C2/5> with mercuric oxide and ammonia or an amine. The resulting compounds may, if necessary, be alkylated to introduce the alkyl substituents R3, R4 and R5, or converted into the free bases or acid addition salts.  Polyamines of Formula III are prepared by reducing the corresponding nitriles, or by condensing alkylene diamines or polyalkylene polyamines with alkylene dihalides.ALSO:Pharmaceutical, horticultural and agricultural compositions having antifungal, anti-bacterial, antiviral, analgesic and antiheparin activity, comprise a compound of the formula:  <FORM:1114155/A5-A6/1> wherein each of R1 and R2 is a hydrogen atom or an alkyl group, each of R6, R7 and R8 is an alkylene group separating adjacent nitrogen atoms by a chain of at least two carbon atoms, the total number of carbon atoms in the straight chain between the groups G1 and G2, excluding branching groups, being always greater than 12, n is 0 to 4 and each of G1 and G2 is a group of the formula:  <FORM:1114155/A5-A6/2> wherein each of R3, R4 and R5 is a hydrogen atom or a C1-4 alkyl group, or a salt thereof, together with a carrier.  The pharmaceutical compositions may be in a form suitable for oral, topical, rectal, intravaginal or parenteral administration, e.g. in the form of tablets capsules, solutions, syrups, elixirs, emulsions, sprays, powder insufflations, nasal drops, throat paints, skin paints, lotions, creams ointments, aerosols, dusting powders, suppositories, pessaries or injectable preparations.  The horticultural and agricultural compositions may be in the form of solutions, emulsions, dusts, wettable powders, granulates, pellets and pastes.
Patent GB-1401531-A (GB)
Title: Dewaxing hydrocarbon oils
IPC: C07C67/00
Filed: 1972-07-24
Abstract: 1401531 Separation of n-paraffins from oils EDELEANU GmbH 24 July 1972 [31 July 1971] 34573/72 Heading C5E A mineral oil 2 is passed into an adduct-forming vessel 1 together with an aqueous solution of urea 3 saturated at 70 C. and a diluent stream 4 arising from the washing of the adduct on the filter 5. The washed adduct is decomposed at 1 to provide a layer 19 of n-paraffins which is passed to a second adduct-forming vessel 21 together with an aqueous stream 22, comprising an amount of available urea which is less than that used in the first adduct-forming vessel 1, and a stream 24 arising from the washing of the adduct on the filter 12 with a stream 25 of fresh oil solvent. The washed adduct is decomposed at 27 to provide a stream 30 of pure n-paraffins. The adduct on the filter 5 is washed with either a stream 13 comprising the filtrate from the filtration of the second adduct at 12 or with a stream 38 of fresh solvent in which case the filtrate 13 is separated at 36 into a stream 37 of recovered solvent and a stream 39 of soft wax. The oil solvent can be methylene chloride or light hydrocarbon and the temperatures in the adductforming vessels 1 and 21 can be controlled by withdrawing vapour through lines 32 and 33. As shown the first adduct can be decomposed at 15 by heating with an aqueous stream 16 arising from the reconcentration of the streams 23 and 31 of aqueous urea at 17.
Patent GB-673927-A (GB)
Title: Improvements in or relating to apparatus for heating the air for blast furnaces and like devices
IPC: C21B9/00
Filed: 1947-12-30
Abstract: 673,927. Gas burners. SOC DE TECHNIQUE INDUSTRIELLE. Dec. 30, 1947 [Jan. 21, 1946], No. 34579/47. Class 75(i) [Also in Group XIII] A gas burner provided at the lower end of the combustion shaft 73 of a Cowper stove (see Group XIII) comprises superposed air and fuel inlets 70, 71 mounted over a vertically elongated aperture in the wall of the shaft. The upper inlet 70 supplies air or gas through a pipe 25 to a mouthpiece 28, which may be cylindrical, flaring, or tapering, and be located by distance pieces 29. The mouthpiece 28 is interchangeable with others of different dimensions. An apertured diaphragm 21, through which the other fluid (gas or air) from the lower inlet 71 passes, may be provided. Cleaning doors 31, 33, one of which has a window 32, are provided on the inlets. The Specification as open to inspection under Sect. 91, comprises also a burner in which the fluid fuel and air are delivered, one through a central rectangular inlet for one fluid and the other through two lateral rectangular inlets. In another form, Fig. 6 (Cancelled) the two fluids are delivered through two coaxial tubes 10, 11. Interchangeable rings 12 of different thicknesses may be mounted on the inner tube 10 to vary the relative velocities of air and gas. A similar variation may be obtained in the burner shown in Fig. 7 (Cancelled) by the vertical adjustment of the mouthpiece 17 on the end of the central conduit 15 for one fluid. This adjustment, obtained by rotating a cam 20, varies the free space 19 for the passage of the other fluid. This subjectmatter does not appear in the Specification as accepted.