baber/WOPTO huggingface dataset:
Patent GB-1393238-A (GB)
Title: Automatic zero device
IPC: G01R17/06
Filed: 1973-08-10
Abstract: 1393238 Automatic zero offset device KOLLMORGAN CORP 10 Aug 1973 [11 Aug 1972] 38111/73 Heading G1U A device which when activated automatically registers a zero offset voltage applied to it and thereafter produces a voltage equal to the difference between the voltage then applied to it and the zero offset voltage, comprises a D/A converter 6, including a counter controlling a resistive ladder attenuator, an amplifier OP1 which adds the output of the D/A converter to an input signal 3, and a comparator 10 which when activated by the application of a control signal to a terminal V zero  causes pulses from a source 8 to be applied to the D/A converter until the output of the summing amplifier OP 1 is zero. Thus, if the zero offset voltage is applied to the input terminal 3 and a control signal is applied to the terminal V zero  then the D/A converter is driven until it produces a voltage equal and opposite to the zero offset voltage, so that subsequently any signal to be measured that is applied to the input terminal 3 has the zero offset voltage subtracted from it before being passed to a voltage measuring instrument 2.
Patent GB-829435-A (GB)
Title: Improvements in and relating to basket frames
IPC: A47G7/08
Filed: 1956-12-13
Abstract: 829,435. Baskets. LIEDTKE, H. Dec. 13, 1956 [Dec. 17, 1955 ; Aug. 21, 1956], No. 38132/56. Class 133. A plastics basket frame has a bowl-shaped base 1, uprights 2 provided with knobs 3 to retain plaiting and supports 4 for the contents -e.g. a flowerpot. The ends of a flexible carrying handle can be inserted into longitudinal grooves in the uprights said ends being provided with teeth so that they are secured by the plaiting (not shown). An additional framework of uprights held together by rings may be inserted flush within the basket frame. In a modification the base 1 is provided with niches into which removable uprights may be inserted and secured by a ring.
Patent GB-343643-A (GB)
Title: Refrigerant evaporator for cooling brine
IPC: F25B39/02
Filed: 1929-12-12
Abstract: 343,643. Cooling brine. HOVEMAN, J. C., HOVEMAN, C. R., and MOUZET, H. L. F., 17, Rue des Pyramides, Paris. Dec. 12, 1929, No. 38168. Convention date, Dec. 13, 1928. [Class 29.] A refrigerant evaporator for cooling brine comprises upper and lower cylindrical heaters a, b connected by groups of tubes c, f which communicate respectively with the refrigerant vapour and liquid spaces of the upper headers, and are separated by partitions d. The brine enters the top of the evaporator casing e and flows over the tubes in counter-current to the refrigerant therein to outlets h. The upper headers are connected to a compression refrigerating machine. In a modification, an annular header is substituted for the upper cylindrical headers, while in another arrangement, the upper cylindrical headers may be replaced by two concentric annular headers. The lower header may be dispensed with in all the arrangements, the tubes c, f being directly connected to one another. Specification 284,711, [Class 123 (ii), Steam generators], is referred to.
Patent GB-1311528-A (GB)
Title: Method of producing a welded steel construction
IPC: C21D9/50
Filed: 1970-08-11
Abstract: 1311528 Making welded steel structures KVERNELANDS FABRIKK AS 11 Aug 1970 [13 Aug 1969] 38640/70 Heading B3A  In a method of making a welded steel construction in which the parts have different hardening and welding characteristics, the parts are welded together using electrodes of a material having a hardening characteristic which lies between the hardening characteristics of the steel parts, whereafter the construction is heated to above the conversion temperature and quenched to below the lower martensite temperature. A stem 1 having a hardness of about 50 HRc is welded to a connecting surface 2 having a hardness of about 30 NRc and to arms 3, 4 having a hardness of about 45 HRc. The electrodes, on hardening, have hardnesses respectively of between 30-50 NRc and 45-50 HRc. The welded structure is heated to 900‹ C. and then quenched to room temperature.
Patent GB-1454626-A (GB)
Title: Transmitter output monitor for a dvor beacon system
IPC: G01S19/48
Filed: 1974-09-05
Abstract: 1454626 Radio navigation MARCONI CO Ltd 5 Sept 1974 [20 Sept 1973] 38764/74 Heading H4D In a Doppler V.O.R. of the single or double side-band kind simple monitoring of the total radiation therefrom will not in all cases detect lack of energization of single or opposed aerials of the array. Such lack of energization produces a "notch" in the radiation. The radiation, i.e. reference carrier amplitude modulated at 30 Hg and the azimuth dependent carrier plus 9960 Hz doppler frequency modulated at 30 Hz is thus detected by a monitor aerial 1 and the 9960 Hz component selected by detector 2 and filter 3 (together with harmonic removing filter 4). A ful wave rectifier 5 converts the 9960 Hz into approximately 20 kHz pulses which are fed to a threshold comparator 6 for detection of the absence of a pulse, i.e. a "notch". The output of the comparator 6 controls a monostable with a period such that its output only goes low if a "notch" occurs. An alarm 9 is then actuated.
Patent GB-1513348-A (GB)
Title: Electrolytic capacitor
IPC: H01G9/08
Filed: 1976-09-20
Abstract: 1513348 Electrolytic capacitors MATSUSHITA ELECTRIC INDUSTRIAL CO LTD 20 Sept 1975 38893/76 Heading H1M An electrolytic capacitor assembly of low inductance, low equivalent series resistance and good heat dissipation comprises a plurality of wound units 2 having anode and cathode lead foils extending from both ends of the rod and connected to respective ones of a pair of lead plates 3, 4 assembled by means of slits 20 that they intersect each other perpendicularly and are electrically insulated from each other, the assembly being contained in a casing. Plates 3, 4 may have holes 14 for external connections and the upper ends may project from the casing cover and be folded over to constitute terminals. The lead plates need not extend the full length of the units (Fig. 8, not shown). In a modification, for accommodating only two capacitor units, one plate may be folded twice at the region of its vertical mid-line, the major portion thereof lying parallel to the other plate (Fig. 2, not shown).
Patent GB-1151548-A (GB)
Title: A device for the Continuous Conveyance of Powders
IPC: B65G53/00
Filed: 1966-09-02
Abstract: 1,151,548. Pneumatic conveyers. KOMPLEX NAGYBERENDEZESEK EXPORT IMPORT VALLALATA. 2 Sept., 1966 [17 Sept., 1965], No. 39291/66. Heading B8A. Apparatus for feeding powder continuously into a water stream in a duct 12 comprises a storage container 8 connected by a valve 7 to a charging container 4 which is connected by a valve 6 to a sealed hopper 1 having an airpermeable floor 2 and an outlet pipe 3. Compressed air is fed to the hopper 1 and container 4 through valves 17, 16 and a compensating pipe 14 with a valve 25 connects the hopper 1 and container 4. In operation, the hopper 1 is filled with powder to the level A and is pressurized through the valve 17. The container 4 is filled from the container 8, the valve 6 being closed. When the powder in the hopper descends below the level B, the valves 7, 21 close and the valve 16 opens to equalize the pressure in the container 4 and hopper 1. When valves 16, 25 open, powder flows from the container 4 into the hopper 1 through the valve 6 until the powder reaches the level A. All the valves are controlled automatically except valves 17, 18 which are hand-operated.
Patent GB-1315898-A (GB)
Title: Shear
IPC: B23D33/02
Filed: 1971-08-23
Abstract: 1315898 Shearing; workguides DANIELI & C SpA 23 Aug 1971 [28 June 1971] 39400/71 Heading B3W A pair of disc cutters 12, 12<SP>1</SP> have concentric cutting edges 32, 34, and 32<SP>1</SP>, 341 respectively and a pivoted switch guide 50 feeding rolled stock 38 to outlet guides 24 or 26 or 28 moves the stock past cutting edges 34, 34<SP>1</SP> in switching from guide 24 to guide 26 and past cutting edges 32, 32<SP>1</SP> in switching from guide 26 to guide 28. Air cylinders 54, 56 actuate the switch guide. In another arrangement Fig. 6, not shown, a further similar pair of disc cutters and guides is provided, the arrangement allowing for cutting the stock into three useful lengths and disposing of front and rear crop ends. The cutting edges are formed on cutting rings 30, 30<SP>1</SP> which are replaceable and may have four cutting edges and be reversible, Fig. 3 (not shown). The cutter units are bolted together above the disc cutters, Fig. 1, not shown, and may be moved apart on a fixed base to vary the cutting clearance.
Patent GB-1186465-A (GB)
Title: Improvements in or relating to devices for producing Fluid Signals
IPC: F15B5/00
Filed: 1968-08-19
Abstract: 1,186,465. Regulating fluid-flow. HONEYWELL Inc. Aug.19, 1968 [Aug.30, 1967], No.39540/68. Heading G3H. The differential pressures applied to control channels 35, 36 of amplifier 33 are varied by moving piston 13 along slotted cylinder 11 thereby varying the leakage through the slot and therefore the pressures in conduits 30, 31. Piston rod 16 is moved by a handle 15 carrying a pointer 41 which moves along scale 40 calibrated in differential pressures. In a modification Fig.2 (not shown) the piston rod carries two further pistons which, together with piston 13, define constant volume chambers (18, 19) so that the pumping action of piston 13 in the Fig.1 construction is counteracted. In further modifications (not shown) one chamber is dispensed with, and slot 12 can either be replaced by a series of apertures, or it can be of non-uniform shape.
Patent GB-844208-A (GB)
Title: Improvements in and relating to filter presses
Inventor: BOWERS SAMUEL FRANK
IPC: B01D25/19
Filed: 1958-12-09
Abstract: 844,208. Filter presses. PROGRESS ENGINEERS Ltd. Dec. 9, 1958, No. 39597/58. Class 46. A filter press comprises trays 12 movable on girders 11 and having a plain tray 18, without hydraulic connections, to divide the trays into two presses. The end plates 13 are both movable and each is provided with a liquid inlet 14 and conventional clamping means 15, 16. After one press operation the trays are separated and at the same time the separation serves to move the trays towards the other end plate for the next operation thus avoiding a separate opening and closing operation of the trays.
Patent GB-1074459-A (GB)
Title: Improvements in or relating to apparatus for stretching tubes
IPC: B29C48/09
Filed: 1964-09-30
Abstract: 1,074,459. Tubular film stretching apparatus. GENERALE ALIMENTAIRE G.A.S.A. Sept. 30, 1964 [Oct. 3, 1963], No. 39784/64. Heading B5B. As depicted in Fig. 1 (not shown) an apparatus for stretching a tubular film simultaneously in the longitudinal and transverse directions in a continuous manner comprises a pair of driven feed rolls 3 for feeding a tubular film 1 into a stretching zone A and a pair of draw rolls 4 driven at a higher peripheral speed than the feed rolls 3 for stretching the film 1 longitudinally in the stretching zone A and withdrawing it from the zone. A frusto-conical core body or mandrel 5 coaxial with the tubular film travelling through the stretching zone A extends from the inlet to the outlet of the stretching zone and is " freely floating " within the film, not being attached to any body located outside the tubular film. The mandrel 5 comprises an axial stem 6 provided with a number of radial blades 7 the outer edges of which are inclined to the stem 6 and form the external surface of the mandrel 5. The tubular film 1 on entering the stretching zone A is drawn over a cylindrical extension 7 of the mandrel 5 which has the same cross-sectional area as the lower end of the mandrel. The upper end of the stem 6 extends at 6<SP>1</SP> beyond the upper ends of the radial blades 7 (which form the upper broader end of the frusto-conical mandrel and which coincide with the outlet from the stretching zone A) towards the draw rolls 4. To the upper end of the extended stem portion 6<SP>1</SP> is secured a thin plate 8 on opposite sides of which are mounted two freely rotatable rollers 9 and 9<SP>1</SP>. The passage of the tubular film 1 over the floating mandrel causes the latter to tend to rise towards the draw rolls 4 and to urge the rollers 9 and 9<SP>1</SP> against the inner surface of the tube. The tube is thereby urged against the rollers 10 which are freely rotatable but fixed in position with respect to the draw rolls 4. Upward movement of the mandrel 5 is thereby restrained. Rollers 10 and 10<SP>1</SP> are spaced sufficiently far apart to permit the passage of the flattened tubular film 1 between them and an extension 8<SP>1</SP> of the plate 8. Heating means are provided in the zone A and the tube is spontaneously or artificially cooled during its passage through zone B.
Patent GB-868444-A (GB)
Title: Improvements relating to the manufacture of containers
IPC: B65D75/34
Filed: 1959-11-25
Abstract: 868,444. Seaming non-metallic sheet materials. GUNTHER WAGNER VERWALTUNGSGESELLSCHAFT. Nov. 25, 1959 [Nov. 26, 1958], No. 40058/59. Drawings to Specification. Class 42 (1). [Also in Group XVII]  In a process for the manufacture of container bodies and covers from foil of synthetic plastics material, the surface of the foil is pre-treated, at those places which later form the closure edges, by roughening or by the application of a chemical solvent in order to improve the adhesion of a heat-sealing compound or lacquer to the foil. The sealing compound may be a plastic of a lower melting-point than that of the sheet used for forming the containers and may be a co-polymerizate of P.V.C. and P.V.A., e.g. " Vynitite " (Registered Trade Mark) VYHH.
Patent GB-1499927-A (GB)
Title: Keyboard switch circuit
IPC: H03M11/20
Filed: 1975-10-01
Abstract: 1499927 Keyboards DENKI ONKYO CO Ltd 1 Oct 1975 40072/75 Heading G4H A keyboard switch circuit comprises an m x n matrix whose intersections are connected by respective series circuits each comprising a diode D and an element RH whose resistance depends on magnetic flux density, varied by depressing respective keys, Fig. 2 (not shown), all the diodes D being similarly poled. In Fig. 3, a ring counter 30 distributes clock pulses to the row conductors via current limiting resistors RM, and once per cycle of counter 30 a second ring counter 50 is stepped one place to select the columns in turn. The matrix output is via a Schmitt circuit comprising an individual first transistor T 1  ... Tn for each column and a common second transistor TB connected as shown, the time of occurrence of an output pulse at ST depending on the key depressed. Each column also has an individual output X 11  ... X NN , a gap appearing in a particular time position in one of the output pulses from counter 50 depending on the key depressed. To compensate for temperature dependence of the elements RH, common emitter resistance RE may be a thermistor or Zener diode and the collector resistances RB may be diodes. Each first transistor T 1  . . . Tn may be connected to a respective second transistor, Fig. 5 (not shown). In another embodiment, Fig. 6 (not shown) the outputs of counter 30 and binary weighted outputs from counter 50 are fed to respective AND gates (NA) together with the output from ST, the outputs of the AND gates being the outputs of the circuit and also being fed via a common OR gate to stop the clock pulses until the key is released, avoiding double keying errors. In Fig. 7, the four most significant bits from counter 12 are decoded, 13, to scan the row conductors of the matrix 10 and the four least significant bits from counter 12 control a multiplexer 17 which outputs at a particular time depending on the key depressed to stop the clock pulse generator 11, ROM 14 being addressed according to the key depressed. In a modification, similar to Fig. 7 but without the ROM, the outputs of counter 12 are strobed by the output of the multiplexer 17 to give an ASCII coded output, Fig. 8 (not shown).
Patent GB-1336052-A (GB)
Title: Phosphorus-containing melamine derivatives and their use as flameproofing additives
IPC: C07F9/6521
Filed: 1971-08-27
Abstract: 1336052 Phosphite - modified melamineformaldehyde resins; textile-treating compositions BAYER AG 27 Aug 1971 [28 Aug 1970] 40316/71 Heading C3R [Also in Divisions C2 and Dl] A melamine derivative of the general formula wherein R 1  is an alkyl radical having up to 6 carbon atoms and R 2 , R 3 , R 4 , R 5  and R 6  are the same or different radicals selected from H, -CH 2 OH and -CH 2 P(O)(OR 1 ) 2  can be condensed at elevated temperature, especially in the presence of an acidic compound, to form a water-insoluble incombustible resin. In an example a melamine derivative of Formula I is obtained by heating 0À1 mol. of hexamethylol melamine with trimethyl phosphite (0À4 mol.) at 90 to 110 C. until elimination of methanol is complete. The resulting viscous residue is then heated at 40-50 C. under reduced pressure and the viscous liquid product obtained is then condensed by further heating at 140-150 C.
Patent GB-941885-A (GB)
Title: Improvements in or relating to methods of and means for producing spongy iron from ores and reducing gases in a reduction reactor
IPC: C21B5/06
Filed: 1960-11-25
Abstract: Apparatus for the production of sponge iron from ore comprises an ore reduction reactor 3 connected in series with regenerative heat exchangers 1-2 and 1a-2a so that the heat exchangers function alternately in cracking hydrocarbons to reducing gas which is fed into the reactor and the exchangers are also heated by the combustion with air or oxygen of the partially used waste gases from the reactor.  As shown in the drawing oil containing hydrocarbons or natural gas is supplied via line 4 to primary exchangers 1 and 1a and <PICT:0941885/C3/1> is converted into CO and H2 by means of agents such as steam, CO2, O2 and air which is introduced via line 5. Secondary exchangers 2 and 2a heated by means of waste gases from the reactor 3 heat the cracked gases to above 1000  DEG C. and the heated gases then enter the reactor 3. The apparatus is worked in alternating cycles and in the first cycle valves 11, 12, 13, 14, 15 and 16 are open, the reducing gas entering the reactor via exchangers 1 and 2 and the waste gas passing into exchanger 2a where it is burnt with air or oxygen.  In the reverse cycle valves 11a, 12a, 13a, 14a, 15a and 16a are opened.  In a preferred arrangement the reactor 3 is enclosed by the exchange units 2 and 2a.
Patent GB-1035838-A (GB)
Title: Improvements in and relating to transformers
IPC: H01F27/00
Filed: 1963-10-15
Abstract: 1,035,838. Transformers. ELIN-UNION A.G. FUR ELEKTRISCHE INDUSTRIE. Oct. 15, 1963 [Oct. 19, 1962], No. 40685/63. Heading H1T. A transformer has (for ease of transport) the core removable from the coil assembly 6, the coils being wound on insulating tubes 1 which are sealingly clamped between two i sulating plates 2a, 2b and which have their bores aligned with holes in the plates to receive the core legs, there being a frame member 3 or 4 sealingly mounted on the outside of each plate 2b, 2a and extending the length of the yoke, and finally a wall 7 encircling the coil assembly and being attached to flanges on the frame members 3, 4. The resultant coil enclosure is provided with temporary covers for transport and is filled with oil before transit. The coils are clamped by a pressure frame 9 which is secured by bolts 10, or forced downwardly relatively to the cover 7, by screws 11, which are accessible through handholes 18 in the cover 7. When the coil assembly has been placed on the core legs, the yoke 15 is bolted to the legs, a trough 14 is sealingly attached to the lower frame 4 and an oil-tight cover 16 is fitted to the top of the transformer, the space around the core being filled with oil.
Patent GB-1010072-A (GB)
Title: Copolymers and process for their manufacture
IPC: C08G4/00
Filed: 1962-10-29
Abstract: A trioxane graft polymer is prepared by polymerizing trioxane in the presence of a Lewis acid and at least one primary polymer selected from the group consisting of polyethers, polyether acetals and polyacetals.  The polymerization may be effected by adding the trioxane to a mixture of a polymer and Lewis acid, or by adding the acid to a mixture of trioxane and polymer or by mixing the trioxane and polymer, cooling this mixture to below its melting-point contacting with boron trifluoride gas and polymerizing at above the melting-point of trioxane.  The Lewis acid may be BF3, BCl3, AlCl3, FeCl3, SbCl3, SbCl5, ZnCl2, SnCl4, TiCl4, the reaction product of borontrifluoride with dimethyl ether, methylethylether, diethyl-ether, di-isoamyl ether, tetrahydrofuran or tetrahydropyrene, an oxon-ium salt of boron trifluoride, a substituted diazonium salt containing the BF4-, ClO4- or PF6-anion which is either light active or thermoactive.  Many catalysts are listed. Specifications 886,982 and 919,499 are referred to.
Patent GB-1220150-A (GB)
Title: Improvements relating to vehicle steering gear
Inventor: MILLER HAROLD HENLEY
IPC: B62D7/22
Filed: 1968-08-27
Abstract: 1,220,150. Steering mechanism. H. H. MILLER. 27 Aug., 1968 [15 Sept., 1967], No. 40888/68. Heading B7H. Steering linkage for a motor vehicle includes hydraulically-damped lost-motion connecting means which permits variation in the length of the linkage to allow the steerable wheels to adopt the most suitable relative alignment as the vehicle turns. The lost-motion connecting means comprises a piston-rod 16a carrying a piston 16 slidable in a cylinder 18 retained in a body 10 by a sleeve 17. An oil reservoir 19 surrounding the cylinder 18 communicates through ports 26 with a space 25 around the piston. A shuttle valve 3 fits in a bore in the piston with sufficient clearance to permit a limited oil flow between chambers 2, 9 at opposite ends of the piston, and is arranged to put the unpressurized chamber 2 or 9, according to the direction of the prevailing load on the linkage, into communication with the space 25 through an axial passageway 7 or 11, ports 6 or 6a, one of grooves 15, and ports 4, or 5, thereby to allow a flow of oil to compensate for the unequal areas of the chambers 2, 9. The steering linkage may comprise two tie-rods linked by a relay rod.