baber/WOPTO huggingface dataset:
Patent GB-303204-A (GB)
Title: Improvements in or relating to the joining of metal pipes
IPC: F16L13/04
Filed: 1927-09-30
Abstract: 303,204. Heck, F. Sept. 30, 1927. Joints formed by welding. - A welded joint between two pipes is relieved of strains by heating the engaging spigot-and-socket ends a, b of the pipes and then forming inwardly projecting protuberances on the socket end to engage in depressions or openings in the spigot end. For example, Fig. 4, the pipe end a is formed with a circumferential groove b and the material of the end c of the other pipe is hammered at points d into this groove. In a modification the spigot end b, Fig. 5, is provided with holes g and the two ends are temporarily held together by spot welding f. The pipe end a is heated near the holes g and hammered at these points to form engaging protuberances d, and the joint is then completed by welding h. In the case of a butt joint, Fig. 6, the ends of the both pipes are socketed to receive an internal apertured sleeve i.
Patent GB-1304026-A (GB)
IPC: B29C37/00
Filed: 1970-05-29
Abstract: 1304026 α-Ethynylamines BADISCHE ANILIN- & SODA-FABRIK AG 29 May 1970 [30 May 1969] 25915/70 Heading C2C An α-ethynylamine of formula wherein R<SP>1</SP> and R<SP>2</SP> separately denote identical or different C 1-20  aliphatic radicals, or hydrogen, or together and with the carbon atom whose substituents they are, denote a C 4-12  carbocyclic ring (this ring optionally being part of a bi- or poly-cyclic system) is prepared by reacting the α-ethynyl alcohol with HCN in the presence of a strongly acidic condensation agent and the N-substituted formamide formed is hydrolysed to the α-ethynylamine.
Patent GB-1169119-A (GB)
Title: Electrochemical Apparatus
Inventor: LEDUC JOSEPH ADRIEN MAHER
IPC: H01M8/00
Filed: 1967-06-05
Abstract: 1,169,119. Electrolysis cells. PULLMAN Inc. June 5, 1967, No.25924/67. Heading C7B. [Also in Division H1] An electrolysis cell comprises a first group of electrode, 115 of common polarity alternating with a second group of electrodes, 118, of opposite polarity and dipping into an electrolyte bath, the upper portion above the electrolyte surface of each electrode of said first group having a horizontal opening, therethrough, said electrodes being retained in position by at least one electrically conductive bar, 128, slideably received through the openings and being locked in position by adjustable connectors attached to the top of each electrode and exerting downward pressure on said bar. As shown, the electrodes are supported on supports 120 in the lower portion of the cell. The electrolyte may be aqueous sodium chloride or barium chloride and the cathodes, 115, of mercury, the mercury running down the electrode surfaces from trough  129. In alternative arrangements Figs.3 and 4 (not shown), the mercury flows into a chamber inside the electrode from which it escapes on to the electrode surfaces, either through porous walls of metal screen or through holes in recessed walls. The adjustable connectors may be screws, 131 or springs Fig.6 (not shown) and where springs are used the upper portion of the electrode may be removably bolted on to the lower portion.
Patent GB-636969-A (GB)
Title: Improvements in or relating to a journal for mill rollers
IPC: B02C15/04
Filed: 1947-09-24
Abstract: 636,969. Bearings. COMBUSTION ENGINEERING CO., Inc. Sept. 24, 1947, No. 25925. Convention date, Oct. 4, 1946. [Class 12 (i)] In a journal for mill rollers of the type described in Specification 460,867, [Group II], comprising a sleeve 17 which carries a roller and rotates about a fixed shaft, and a bushing 22 fitted within the sleeve 17, the protruding end of the bushing 22 is enlarged in diameter to form a recess 48 so that the bushing 22 is out of contact with the shaft in the region beyond the contacting wall of the sleeve 17. By this arrangement, side thrusts on the sleeve 17 are not transmitted to the unsupported portion of the bushing 22.
Patent GB-671439-A (GB)
Title: Method of, and apparatus for, producing composite biscuits
IPC: A21B5/02
Filed: 1949-10-10
Abstract: 671,439. Composite biscuits. PAGE, A. C. July 4, 1950 [Oct. 10, 1949], No. 25929/49. Drawings to Specification. Class 49. [Also in Group V] Biscuits are made of at least two layers of different dough by feeding strips of dough onto a moving sheet of dough, cutting away the bottom sheet lengthwise between the strips, cutting the composite dough transversely and baking the biscuits. The scrap resulting from cutting the bottom sheet is returned for re-use. In a modification, strips of second dough are laid on strips of first dough.
Patent GB-899538-A (GB)
Title: Improvements in and relating to galvanic cells
IPC: H01M10/36
Filed: 1959-07-29
Abstract: 899,538. Primary cells. EASTMAN KODAK CO. July 29, 1959 [July 30, 1958], No. 25942/59. Class 53. A Pb/PbO2 primary cell uses liquid ammonia as a solvent for ion contributing metal salts, many being specified. The cell 1 has a pressureresistant aluminium or stainless steel container and is filled with liquid ammonia through valve 13 either in the liquid form or as a vapour on to the metal salt which must then be deliquescent to ammonia. Stainless steel supports 3 carry the active material 2, 5 and absorbent paper 8 impregnated with the metal salt lies therebetween. Reference has been directed by the Comptroller to Specification 834,122.
Patent GB-682872-A (GB)
Title: A device in centrifugal separators for indicating the sludge level in the bowl
IPC: B04B1/14
Filed: 1949-10-10
Abstract: 682,872. Centrifugal separators. AKTIEBOLAGET SEPARATOR. Oct. 10, 1949 [Oct. 11, 1948], No. 25950/49. Class 23 In a device for indicating the sludge level in a centrifugal separator comprising one or more channels 2 which extend from the sludge space 1 towards the centre of the separator bowl 3, the inlet of a channel being so located that it becomes clogged when the sludge reaches a predetermined level, the channel leads to a discharge point which is located at substantially the same level as that at which the separated liquid is discharged. The channel ends in a chamber 4 provided with an adjustable discharge-nozzle 5 and a venting orifice 6. Cessation of flow from the nozzle, which normally signals the necessity for discharging the sludge, may also be used to actuate servo-means for effecting said discharge automatically. Specification 662,451 is referred to.
Patent GB-1478337-A (GB)
Title: Process for separating the components of an aqueous colloidal  suspension
IPC: C02F1/52
Filed: 1974-06-12
Abstract: 1478337 Treating water EBARA INFILCO K K 12 June 1974 [8 April 1974] 26099/74 Heading C1C A process for the treatment of aqueous colloidal suspension, comprises adding to an aqueous colloidal suspension having a concentraion of solid colloidally suspended matter of less than 10 g/l from 5 to 300 ppm. expressed as added weight, of an inorganic metal salt flocculating agent to cause coagulation with the solid suspended matter, adding to the suspension further from 0À5 to 20 ppm expressed as added weight, of an organic flocculating agent having a molecular weight of at least 500,000, immediately after completion of the coagulation imparting to the mixture an upward flow into apparatus having in a lower portion thereof a blanket layer or granulation zone of granulated solids which have been formed from said matter and which have a concentration of fluidized particles in the range of from three times that of the matter in the mother liquor to 150 g/l, and agitation so as thereby to bring said coagulated solids into mutual contact with formed granules to form larger granules, the rate of said agitation being below that whereat said blanket is disrupted, and thereafter drawing off granulated solids from said blanket layer at a rate such as to maintain the concentration of granular solids in said blanket layer within the specified limits, and drawing off clarified water above said blanket layer.
Patent GB-1397604-A (GB)
Title: Electrical power supply systems
IPC: H02M5/45
Filed: 1972-06-06
Abstract: 1397604 Converters MOSKOVSKY ORDENA LENINA I ORDENA TRUDOVOGO KRASNOGO ZNAMENI INSTITUT IN ZHENEROV ZHELEZNODOROZHNOGO TRANSPORTA and TALLINSKY ELEKTROTEKHNICHESKY ZAVODIMENI MI KALININA USSR 6 June 1972 26225/72 Heading H2F  Power supply apparatus associated with a railway locomotive comprises a polyphase generator, means for converting the output thereof to a single phase output, means for controlling and adjusting the frequency of the single phase output, means for preventing incorrect operation of the converting and so prevent the flow of circulating current and means for protecting the converter against overload currents. An alternator 2 driven by a diesel engine of a locomotive by a shaft 1 has two three phase output windings 3, 4 displaced at 30 degrees to one another and an excitation field winding 5 controlled by a voltage stabilizing unit 6. The output windings 3, 4 are connected to a cyclo-converter 7 comprising two groups 8, 9 of thyristors connected in parallel opposition, each group 8, 9 comprising two bridge circuits connected in series. The output of the cyclo-converter 7 is single phase at a frequency determined by a pulse generator 56, the output at terminal 38 feeding the train loads 39, radio interference being suppressed by a diode bridge 55 and capacitor 54. Firing pulses for the thyristors 11-33 of the converter 7 are provided by pulse generators 60, 61 under the control of two bi-stable devices 57, 58 and the master pulse generator 56, power for the control system 56-61 being provided by a unit 62 when an initiating switch 58 is closed. In order to prevent thyristors in the groups 8, 9 firing simultaneously a zero load current detector 34 is provided which provides an input for the bistable devices 57, 58 such that the pulse generators 60, 61 can only provide firing pulses for the thyristors 11-33 at zero current crossings, the control system being provided with a delay device to ensure that the thyristors in one group are extinguished before the thyristors in the other group are rendered conductive. Protection for the converter 7 is provided by current limiting reactors 65 and current transformers 63 the signals from which are operative to inhibit the bi-stable devices 57, 58 and thus to prevent the production by the pulse generators 60, 61 of firing pulses for the thyristors 11-13. The circuits for the devices 34, 56-61 and 62 of the control circuit are described and include elements such as transistors, saturable reactors, thyristors and diode bridges.
Patent GB-1394873-A (GB)
Title: Darlington amplifier with turn-off compensation
IPC: H03F3/30
Filed: 1972-06-06
Abstract: 1394873 Transistor amplifiers RCA CORPORATION 6 June 1972 [7 June 1971] 26275/72 Heading H3T An amplifier, e.g. a push-pull output amplifier comprises first and second input transistors 10, 30 of the complementary type, first and second output transistors 12, 32 also of the complementary type, the collector electrodes of similar type transistors 10, 12; 30, 32 being connected to first and second supply terminals 14, 34 respectively, the base electrodes of the output transistors 12, 32 being respectively connected to the emitter electrodes of the input transistors 10, 12, a parallel combination of resistive and capacitive devices 70, 72 connected between the emitter electrodes of the input transistors 10, 30, the emitter electrodes of the output transistors 12, 32 being connected to an output terminal 16, and the base electrodes of the input transistors 16, 30 being coupled to an input terminal 42. In operation, with a constant current source applied at terminal at 22 and a source of A.C. signals 62 connected at 42, changes in signal in a direction to turn on the previously non-conducting input transistor cause a corresponding application of such change to be applied in a network 70, 72 to the previously conducting output transistor to increase the speed with which it turns off. A feedback arrangement 60, 64 operates to modify the amplitude of an applied sine wave input signal when the output at 16 departs from such waveshape due to mis-match between the turn-on drive and turn-off drive applied to the output transistors 12, 32. The arrangement of Fig.3 (not shown) relates to an audio amplifier incorporating the circuit of Fig. 2.
Patent GB-874430-A (GB)
Title: Improvements in or relating to the manufacture of polymeric materials
Inventor: CHAPMAN JOHN FREDERICK
IPC: C08G18/76
Filed: 1958-08-15
Abstract: Cellular polyurethanes are obtained by reacting a mixture comprising a major proportion of a diaryl methane diisocyanate and 5%-50% of a polyisocyanate of a functionality greater than 2, with a polyether containing at least two hydroxyl groups, and water. Diphenyl methane and phenyltolyl methane diisocyanates are specified, together with lists of suitable reactants.  The polyisocyanate of functionality greater than 2 may be obtained by interacting some of the diisocyanate with a polyhydric alcohol, or it may be partially polymerized e.g. by catalysts, or when the diisocyanate is being prepared by phosgenating crude diaminodiarylmethane, the polyamines present are also phosgenated. The ionizable chlorine content of the polyisocyanate composition is preferably from 0,01%-3% by weight. The one stage or two stage process may be used, and the product may contain known additions, e.g. fire proofers, surface active agents, fillers and colours.  The reaction is carried out in the presence of a catalyst, e.g. a tertiary amine.ALSO:Cellular polyurethanes are obtained by reacting a mixture comprising a major proportion of a diarylmethane diisocyanate and 5-50% of a polyisocyanate of a functionality greater than 2, with a polyether containing at least two hydroxyl groups, and water. Diphenyl methane and phenyl tolyl methane diisocyanates are specified together with lists of suitable reactants.  The product may have the known additions e.g. fire proofers, surface active agents as pore modifiers, fillers and colours, and it may be prepared by the one stage or two stage technique.
Patent GB-1146100-A (GB)
Title: Improvements in or relating to arrangements including a delay line
IPC: H03K5/06
Filed: 1967-06-08
Abstract: 1,146,100. Pulse steepening circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 8 June, 1967 [11 June, 1966], No. 26518/67. Heading H3T. The edges of a pulse are steepened, for example to remove aperture distortion in a television system, by applying the pulse to a short circuited delay line and combining the output current with current through the shunt capacitance of sections of the line. In the figure transistor 13 effectively short circuits the line and provides at its output a voltage pulse similar to the pulse from a generator 1. The forward travelling pulse produces positive current pulses (38, Fig. 2, not shown) through the capacitors of the line and the reflected pulse produces negative current pulses (39) in these capacitors, the line being correctly terminated by resistor 3. These pulses are combined by transistor 14 to produce a corresponding output voltage (40) and this is inverted by 20 and combined with the output from transistor 13 to produce a steepened pulse. The amount of correction is controlled by capacitor 22 and improved wave shape is obtained by omitting the capacitor current from point 10. The line may alternatively be a coaxial cable and the transistors may be replaced by valves in a negative feedback circuit.
Patent GB-225025-A (GB)
Title: Improvements in or relating to volumetric measuring devices for powdered granular orbroken materials
IPC: B28C7/04
Filed: 1923-10-24
Abstract: 225,025. White, A. E., (Blaw-Knox Co.). Oct. 24, 1923. Fixed - chamber apparatus for delivering measured quantities of materials such as sand, gravel &c., comprises a storage bin 7, a measuring hopper 12, and a valve arranged between them at a distance from their edges so as to allow the natural slope of the material to determine the upper limit of the quantity delivered to the hopper. Fig. 2 shows the filling position with the valve 26 open, and Fig. 3 shows the valve closed and the hopper 12 ready to be emptied. The valve may be formed as a trough with the bottom partly cut away leaving an edge 34, Fig. 7. The side flanges 27 are arranged to run on rollers 25 mounted in frames supported by depending flanges 11 of the bin 7. When the hopper is filled, the material takes up the angles of slope 35, 36, Fig. 2. When the valve is closed, a quantity of material is carried forward to the line 40, Fig. 3, and falls down when the bottom door of the hopper is opened. The valve is actuated by a lever 33, and the bottom door 19 of the hopper, which is counterweighted, is released by a cord 21. The hopper is supported by the plates 11, and is made in two telescopic parts 13, 14 which may be adjusted so as to vary the quantity measured. The form of the slide valve may be varied, or a rotary valve may be provided. Two or more hoppers may be arranged to be fed by one storage bin.
Patent GB-386282-A (GB)
Title: Improvements relating to electron discharge tubes
IPC: H01J29/70
Filed: 1932-09-24
Abstract: 386,282. Discharge apparatus. ALLGEMEINE ELEKTRICITATS-GES., 2, Friedrich Karl-Ufer, Berlin. Sept. 24, 1932, No. 26592. Convention date, Sept. 25, 1931. [Class 39 (i).] A cathode-ray tube containing a small quantity of gas, has a small bent tube of conducting material into an opening of which the electron beam from the cathode is directed coaxially. As shown in Fig. 1, the tube 3 is of copper, preferably silvered internally, and has a widened inlet consisting of a molybdenum tube 5 facing the cathode 2 ; or the tube 3 may be of insulating material silvered internally. The tube 3 may act as the anode, or a separate anode may be arranged between the tube and the cathode, and the tube may be maintained at the anode or other potential. The beam passing to the fluorescent screen 7 may be deflected by plates 8 or magnetically. In the arrangement shown in Fig. 2, a flexible copper tube 9 connects two vessels 10, 11, the cathode 12 being mounted in the vessel 10, and the deflecting plates 19 and screen 20 in the vessel 11. Copper caps 13, 17 connect the tube with the vessels. Deflecting coils 18 may b:earranged at the end of the tube. The vessel 10 : is connected with an evacuating pump, and the vessel 11 contains a small amount of gas. With this arrangement the beam may be bent into ,such a direction that.it is not affected by the earth's magnetic field.
Patent GB-1012753-A (GB)
Title: An oscillating electric drive motor
IPC: H02K33/18
Filed: 1962-07-11
Abstract: 1,012,753. Reciprocating motion. H. DOLZ. Jaly 11, 1962 [July 11, 1961], No. 26627/62. Addition to 902,184. Heading H2A. [Also in Divisions F1 and F2] At least one of the ends 24, Fig. 1, of a helical spring 23 connecting the pole ring 2 of an oscillating armature 5<SP>1</SP> with a reciprocating compressor piston 9 with which the spring is coaxial is secured by means of a resilient rod 34 capable of transverse deflection thereby serving to centre the piston during reciprocation. As shown the upper end 24 of the spring carries a shackle 35 by which it is clamped by a screw 36 and to which the lower face end of an upper rod 34 is welded; the upper end being secured by a threaded ring 38 to a collar 13<SP>1</SP> fixed to the piston 9. The lower end 24 of the spring carries a strap 39 to which is welded a lower rod 34 having one end screwed into a ring 38 which in turn is screwed into-the pole ring 2. In a modification each resilient rod 34, Fig. 3, carries a frusto-conical collar 46 seated in a threaded ring 48 screwed into the bottom end of the piston and into the pole ring. In a further modification the upper end 24 of the spring 23, Fig. 5, is rigidly connected by a shackle 58 screwed into a sleeve 57 secured to the lower end of the piston, whilst the lower end 24 of the spring is clamped to the resilient rod 34 inserted in a threaded ring 38 screwed into the core magnet 1.
Patent GB-875904-A (GB)
Title: A lithographic printing machine
IPC: B41F3/30
Filed: 1959-08-05
Abstract: 875,904. Printing machines. HARDY, R. V. M. Aug. 5, 1959, No. 26710/59. Class 100(2) A lithographic printing machine comprises a base 1, 2, 3, an inking support 21 and an offset pad 23 mounted in spaced positions on the base, and a lithographic plate carrier 7, 8 pivotably mounted on the base between the support and the pad and movable about its pivot to position it selectively on the support 21 for inking of the plate and on the offset pad 23 for transfer of the inked impression. Prinfing surfaces. The carrier 7, 8 is pivoted to the base at 6 and has a cross-bar 9 to which one end of a flexible lithographic plate 10 is secured, holes in the plate being engaged over pegs 11 on the bar 9 and a keeper-bar 12 then being placed over the pegs and secured thereon by knurled nuts. The other end of the plate 10 is secured in similar fashion to a bar 15. The bar 15 has a metal tongue 14 projecting from each end which is slidable in a slot 13 in the corresponding side member of the carrier. Cords 19 pass through eyelets 18 at the outer end of the carrier and connect the tongues 14 to the opposite ends of a tension spring 20 whereby the plate 10 is kept under tension. Offset surfaces. The offset pad 23 comprises a blanket stretched over the curved upper surface of a rigid block 22. The blanket is firmly secured to the block 22 at the end near the pivots 6 and at the opposite end to a tie bar 25. The blanket is tensioned by means of screws 26 which pass through holes in a cross-member 27 of the base and are engaged by knurled nuts 28. Platen machines. In use the carrier 7, 8 is first positioned so that the plate 10 is supported by the support 21 and may be inked and damped by a hand roller. The carrier is then pivoted through almost 180 degrees until the inked surface of the plate is in contact with the pad 23, the image being transferred to the blanket by the application of a dry roller to the back of the plate. The carrier is finally moved to the Fig. 1 position to allow paper to be put on the offset pad. An impression is taken by rolling the paper on the back with a dry roller. Guide plates 29, 30 mounted on the base help maintain register of the plate 10 with the pad 23. Stencilling. The plate 10 may be replaced by a silk screen, pigment being forced through the screen on to a sheet of paper on the block 22.
Patent GB-673344-A (GB)
Title: Improvements in or relating to toy railways
IPC: A63H18/02
Filed: 1950-11-02
Abstract: 673,344. Toy railways. SCHMID, M. Nov. 2, 1950, No. 26743/50. Class 132 (iii). A toy railway comprises twin tracks terminated at both ends by a point and signalling device. In Fig. 1, arms f, f<SP>1</SP> are fixedly mounted on a pivot d and are positioned between the rails of the tracks in slots g, g<SP>1</SP>, respectively. On travelling along the upper track towards the termination, a reversible vehicle e.g. a locomotive, engages arm f causing it to pivot downwardly and arm f<SP>1</SP> to be correspondingly raised. Simultaneously a push rod h connected to a signal operating lever is moved longitudinally by the arm f<SP>1</SP> and the signal arm is raised. The vehicle is automatically reversed on the single track section of the points e.g. by means of a buffer stop and, travelling in a straight line over the points, engages arm f which is restored to the position shown; and the signal is allowed to drop by the return movement of the arm f<SP>1</SP>. The procedure is repeated at the other end of the track.