baber/WOPTO huggingface dataset:
Patent GB-649342-A (GB)
Title: Improvements in or relating to the separation of niobium and tantalum from ores
IPC: C22B34/24
Filed: 1947-12-24
Abstract: Niobium and tantalum values are recovered from ores, ore concentrates, &c. also containing tin, iron, manganese, titanium, &c. by decomposing the materials with an acid agent, adding metallic zinc or metallic zinc-containing reducing agent (zinc amalgam) to the liquid decomposition product in amount sufficient to reduce metals other than the niobium and tantalum, and precipitating the latter two as hydroxides by hydrolysis.  The decomposition of the ore may be effected with sulphuric acid, or an acid sulphate such as sodium or potassium bisulphate, or a combination thereof, e.g. with concentrated sulphuric acid and ammonium sulphate at the boiling-point, or by fusion with potassium bisulphate followed by treatment with diluted sulphuric acid.  The mixed hydroxides are dissolved in concentrated sulphuric acid or sodium acid sulphate, and the solution reduced with metallic zinc &c. until the niobium is reduced to the 4-valent state, and if desired a small part to the 3-valent state. The solution is then boiled to produce tantalum hydroxide by hydrolysis.  Alternatively, the acid solution of the hydroxides may be diluted to precipitate most of the tantalum, the solution then reduced, and the remainder of the tantalum precipitated by hydrolysis.  The niobium in solution is oxidized, e.g. by air, and then precipitated from the solution by boiling.  During the first reduction, it is desirable to convert a small amount of niobium to the 4-valent state.  According to the Specification as open to inspection under Sect. 91, titanium, if present in the solution after separation of the niobium, may be oxidized to the 4-valent state and recovered by hydrolysis.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1473090-A (GB)
IPC: C07D501/12
Filed: 1973-07-19
Abstract: 1473090 Cephalosporins LILLY INDUSTRIES Ltd 18 July 1974 [19 July 1973] 34337/73 Heading C2C A 7 - α - aminoacetamido - cephalosporin - 4- carboxylic acid is made by reacting a 7-aminocephalosporin-4-carboxylic acid ester with a reactive derivative of an α-aminoacetic acid, in which the amino group is protected by forming an enamine with a #-dicarbonyl compound; removing the amino protecting group from the product; adding sufficient hydrazine or its derivative (e.g. semicarbazide) to prevent reaction of the liberated dicarbonyl compound; and, if desired de-esterifying the resulting 7-α- aminoacetamido compound.
Patent GB-948498-A (GB)
Title: Improvements in detecting bi-nucleate lymphocytes in blood samples
IPC: G06V10/34
Filed: 1960-10-07
Abstract: 948,498. Counting blood cells. PERKINELMER CORPORATION. Oct. 7, 1960 [Oct. 8, 1959], No. 34477/60. Heading A5K. [Also in Division G4] White blood cells are stained and a slide with a blood sample is scanned by a microscope or iconoscope, the signals derived from the detection of white blood cells being entered into a storage matrix. The slide is scanned along a path whose width is half the maximum width of a white cell, the field of detection at any time being as shown in Fig. 3, with a central area X and eight adjacent juror areas A-H. The signals from the various areas are 1 or 0. If X is 1 and less than three juror areas are 0 then a bi-nucleate cell is indicated and counted. If X is 1 and unlike adjacent juror areas occur more than twice in the cluster a link cell is indicated. In this case the co-ordinates of the cell are printed and visual inspection is made later.
Patent GB-1156263-A (GB)
Title: Device for Cooling of Granular Bulk Material
Inventor: GERLACH SIEGFRIED
IPC: F28C3/12
Filed: 1967-07-27
Abstract: 1,156,263. Cooling granular material. MUHLENBAU DRESDEN VEB. 27 July, 1967, No. 34609/67. Heading F4U. Granular material, e.g. fodder, in the form of pressed cake or grain, which has been cooled in a shaft 1 is discharged through outlets 8, 9 provided in an oscillating table 5, the amplitude of the oscillations being varied in accordance with the level of the material in the shaft as sensed by a device 12. The table is oscillated along an axis inclined to the horizontal by a magnetic oscillator 10.
Patent GB-521922-A (GB)
Title: Improvements in or relating to punches for slotting cards
IPC: G06K21/06
Filed: 1938-11-28
Abstract: 521,922. Slotting cards. COPELANDCHATTERSON CO., Ltd., and MANN, A. Nov. 28, 1938, No. 34612. [Class 31 (i)] Apparatus for punching or slotting the edges of cards used for sorting purposes comprises a slide bar B slidable in a slot in a block A<SP>5</SP>, a cage C for holding a stack of cards and mounted on the slide bar B so as to be movable backwards and forwards along a table A', two uprights D, D' with guides for sliding members D<SP>2</SP> carrying cutters D<SP>3</SP> for slotting the edges of the stack of cards, the cutters being operated by power means such as an electric motor and the slide and cage C being located in successive positions relative to the cutters by means of an indicator C' on the slide and a row of holes G on the plate A<SP>3</SP>, in which holes pegs taken from a supply tablet G' are placed corresponding with the positions of the notches required on the edges of the stack of cards. The cutters are operated severally by means of push buttons F<SP>4</SP>, F<SP>5</SP> which cause an electric motor to operate through a clutch box F' either of the crank discs F<SP>12</SP>, F" connected by rods F<SP>14</SP>, F<SP>15</SP> to the cutter-carrying slides D<SP>2</SP>. The push buttons may be differently coloured and the pegs spaced in the holes G coloured correspondingly to distinguish which of the two cutters is operated. The indicator C<SP>1</SP> carries a spring-pressed stud adapted to frictionally engage a row of depressions G<SP>2</SP> to locatethe carriage in position at which slotting is. to be done.
Patent GB-1442809-A (GB)
Title: Truss
IPC: A61F5/28
Filed: 1973-07-20
Abstract: 1442809 Trusses H G NELKIN A R NELKIN C NELKIN E CEASER H NELKIN N R NELKIN E GOLDSTEIN E GOLDSTEIN and N NELKIN [trading as H G ENTERPRISES] 20 July 1973 34640/73 Heading A5R A truss comprises a body portion 10 of inextensible fabric having a pair of folds 13, 14 at the back to provide a flexible portion 15 therebetween, a pair of adjusting straps 23, 33 connected to the folds 13, 14 by means 19-21, 30, 31 which are fixed at one end at a fold and secured to loops 22, 32 through which the straps 23, 33 slidably pass and which adjustably connect to the front body portion 39, whereon a pad is adjustably mounted. The ends of a length of fabric are connected together at one of said folds to form the body portion and the pad comprises a flat body portion (44) enclosed by a ply of cushioning material (45), a cover ply (46), and bindings (47), the pad being adjustably slidably mounted on a strap (49) on the body portion 10, the strap (49) being fixed at one end (50) and adjustably positioned at the other (51, 52). Two pads may be provided.
Patent GB-282693-A (GB)
IPC: H01L21/00
Filed: 1927-12-21
Abstract: 282,693. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Siemens-Schuckertwerke Ges.). Dec. 22, 1926, [Convention date]. By solid undirectional conducting devices. - Dry surface contact rectifiers, such as metalmetal oxide rectifiers, are protected against break-down of the unidirectional conducting layer due to excess current by including in the rectifier current a voltage-absorbing means adapted to keep the current below the value at which breakdown occurs. The voltage-absorbing device comprises a transformer having a high dispersion and connected between the supply circuit and the circuit of the rectifier. According to the Specification as open to inspection under Sect. 91 (3) (a) the voltage-absorbing device may comprise an iron wire resistance having a positive temperature coefficient, or a variable inductance comprising a winding of a core having a variable air gap the length of which is controlled by the current. This subject-matter does not appear in the Specification as accepted.
Patent GB-1302300-A (GB)
IPC: B60S1/46
Filed: 1970-07-17
Abstract: 1302300 Push-button switches SWFSPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 17 July 1970 [22 July 1969] 34645/70 Heading H1N In a push-button switch assembly comprising at least two separate buttons 10, 20, Fig. 1, for controlling a windscreen wiper motor to operate at low and high speeds, the adjacent buttons 10, 20 have a lost-motion coupling comprising a guide slot 36, Fig. 2, on one button 10 engaged by a pin 37 on the other button 20 whereby when the "low speed" button 10 is depressed the "high speed" button 20 remains stationary, but when the "high speed" button 20 is depressed the "low speed" button is also automatically depressed. Each button 10, 20 has a push-push latch system comprising pins 13, 18 engageable under projections 32 on spring- loaded pawls 21, 22 urged towards the pins by wire springs 23. Release of each push-button 10, 20 is obtained by a further excess stroke whereby the pin as 13 in Fig. 2 engages under a lug 28 of the pawl 22 so that on release of the push-button 10 the pawl 22 is tilted axially away from the end of the pin 13 against a spring 24 on its loose pivot pin 19. The same excess stroke of the button 10 also causes release of the button 20 (if previously in the "on" position) the button 10 having a cam face 34 which engages a release lever 29, pivoted at 29a near the button 10, and tilting the pawl 21 on its pin 19 until it is axially free of the pin 18. The buttons may also be associated with further non-locking buttons for operation of the washing installation and "interval operation" of the wiper motor.
Patent GB-1033084-A (GB)
Title: Improvements in or relating to induction machines
Inventor: WILLIAMS FREDERIC CALLAND
IPC: H02K3/28
Filed: 1962-09-11
Abstract: 1,033,084. Change-pole induction motors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 5, 1963 [Sept. 11. 1962], No. 34668/62. Heading H2A. In a variable speed induction motor operating " stretching " and " shrinking " the polepitches by the simple reversal of alternate sets of coils as described in Specification 978,211, the coil-sets (called " blocks " in the present Specification) are not tapered, triangular &c. but of rectangular form, the voltage balance and harmonic content being improved by the use of interleaved sub-blocks. Thus, as shown for a winding having a # block shown unshaded and a 2# block shown shaded, the ends of the two blocks are interleaved. Winding layouts for various machines are given.
Patent GB-1094541-A (GB)
Title: Improvements in or relating to electrical resistances
Inventor: NOYCE SIDNEY JOHN
IPC: H01C7/00
Filed: 1964-08-25
Abstract: 1,094,541. Resistors. BEDCO ELECTRONICS Ltd. Aug. 23, 1965 [Aug. 25, 1964], No. 34771/64. Heading H1S. A resistor comprises a cylindrical (plastics or ceramic) former 31 carrying a resistive element 35 of conductive silicone rubber which may be formed by depositing the silicone rubber in a screw thread 34 (or in two such threads of opposite pitch which cross each other). Alternatively, the element may comprise a coating covering the former or, if a tubular former is used, its inner or outer surface, and may be formed by painting or by dipping into a solution of toluene (or suitable industrial solvent) conductive silicon rubber and a catalyst. The electrodes may be clamped on the ends of the former or may be of metallic paint or may be formed by metal bushes.
Patent GB-1148639-A (GB)
Title: A long-distance viewing device, for example a telescope or binocular
IPC: H04B10/112
Filed: 1967-07-28
Abstract: 1,148,639. Transmitting information over a radiation path. ELTRO G.m.b.H. & CO. GES. f�r STRAHLUNGSTECHNIK. July 28, 1967 [July 29, 1966], No.34882/67. Heading G1A. [Also in Divisions G2 and H4] An observer using the binoculars of Figs.4 and 5 may communicate with an observer equipped with similar binoculars, Figs.1 and 2 (not shown). The observer first aligns his binoculars with those of the other observer by viewing them by means of objectives 7, 8, infrared to visible image converter tubes 13, 14 and eye-pieces 15, 16. This binocular optical set-up has the usual positional adjustment means. The observer speaks into a microphone 22, mounted on an arm which is adjustable between two positions. When moved to its operative position, the microphone arm switches on power to an electro-optical transmitter 9 which receives signals from the microphone. The transmitter may be a luminescent diode or laser emitting infrared radiation, modulated by the speech signals, which is reflected by prism 25 through objective 8 to form a parallel beam. Received radiation from the other observer passes through objective 7 and is reflected by prism 28 on to a light-sensitive semi-conductor 10, the output of which is demodulated and amplified by devices 11 and 12 mounted in the casings 1 and 2. The incoming modulated radiation can also be viewed by the observer by means of the image converters. The received signals are fed to earphones 18, 19 also adjustable in position and actuating switches as does the microphone arm. Alternatives are as follows. The viewing device may be a telescope instead of binoculars. The radiation used for communication may be visible light. The electro-optical transducers 9, 10 may be mounted on the optical axes of the device instead of at the sides of the casings 1, 2.
Patent GB-817227-A (GB)
Title: Improvements in or relating to the manufacture of semiconductor devices
Inventor: BLAKELOCK HAROLD DENNIS
IPC: H01L21/00
Filed: 1956-11-15
Abstract: 817,227. Semi-conductor devices: GENERAL ELECTRIC CO. Ltd. Oct. 31, 1957 [Nov. 15, 1956], No. 34938/56. Class 37. A connection to, or a junction in, a semiconductor body is formed by fusing a quantity of metal or significant impurity while in contact with a surface of the semi-conductor body and in vacuo and then further heating and cooling in an inert or reducing atmosphere. A method of producing a PN junction rectifier is described in which a Nicosel disc is soldered to a copper block which may be constructed to provide for water cooling. A disc of N-type germanium is etched in a mixture of hydrofluoric acid, hydrogen peroxide and water and one surface, and a part of the opposite surface is then gold plated. The germanium disc is placed on the Nicosel disc which carries a layer of solder, and a slice of indium is placed over the gold-plated portion of the upper surface of the germanium disc. The whole is heated in vacuo to melt the indium and the solder and then dry argon is introduced and heating continued up to 550‹ C. The assembly is allowed to cool in dry argon, the periphery region of the indium bead etched, and it is then incorporated in a sealed envelope.
Patent GB-1221498-A (GB)
Title: Cable for electrical communications
IPC: H01B11/00
Filed: 1969-07-11
Abstract: 1,221,498. Repeaters. UNISEARCH Ltd. 11 July, 1969 [15 July, 1968], No. 34963/69. Heading H4R. [Also in Division H1] Cable for a transmission line has integrated circuit elements contained wholly within the cable and arranged at intervals along the cable length functioning as repeater amplifiers for signals in the cable. As described the signal may be carried by a thin strip copper conductor 2, Fig. 1, arranged between copper or aluminium conductors 1 and 1<SP>1</SP> the elements being insulated by suitable dielectric material such a polyethylene and forming a tri-plate line. The centre conductor is broken at points along its length and the integrated circuit inserted. The structure is insulated and sheathed with lead 4 and steel tapes 5. Prefrebaly each integrated circuit includes two parallel connected amplifiers providing a maintained path should one amplifier fail. The amplifier is preferably a digital regenerating amplifier. An alternative cable section is shown in Fig. 3 including conductor pairs 11, 11<SP>1</SP> and 12, 12<SP>1</SP> which are in parallel for signal currents the integrated circuits 13 being connected across the lines and encapsulated in an extruded insulating sheath 14. Power to the circuits is fed over the lines, supplied to lines 11 and 12 and taken off at the repeater from lines 11<SP>1</SP> and 12<SP>1</SP> to make the resistance drop in the lines the same for all repeaters.
Patent GB-172225-A (GB)
Title: Improvements in articulators for use in the manufacture of artificial teeth
IPC: A61C11/02
Filed: 1920-12-13
Abstract: 172,225. Gordon, J., and Morton, H. J. Dec. 13, 1920. Teeth, artificial. - A dental articulator comprising hinged members carrying clamping- devices adjustable relatively to one another in four different ways, consists of a top plate b carrying a slotted member h, hinged on a pin c, and adjustably held to a projection a<2> of a lower plate a by means of a winged nut f<1> and a stud f. Connected to the top and bottom plates respectively are fixed jaws e<2>, d<1> and co-operating jaws e<3>, n<2>, adjustable by means of screws e<8>, k<2>. The top clamping-device is held to the top plate b by a stud q on the jaw and a nut 8, longitudinal and transverse adjustment being allowed by a wide slot in the plate b. A fine adjustment j of usual construction is provided,
Patent GB-605524-A (GB)
Title: Improvements in or relating to the protection of the reflecting surface of cinematograph or other mirrors
IPC: G02B5/08
Filed: 1945-12-28
Abstract: 605,524. Reflectors. PARSONS & CO., Ltd., C. A., WELLS, J.,'and ELLIOTT, E. R. Dec. 28, 1945, No. 35040. [Class 97 (i)] The metal reflecting layer or layers are protected by spraying with a preliminary coat of a substance chemically inert to the layer and then spraying a further coat of metal, e.g. copper or aluminium. The mirror may be heated after application of the preliminary coat. For a silvered or coppered mirror the preliminary coat is a mixture of asbestos powder and potassium silicate, whereas for an aluminium mirror the potassium silicate is mixed with powdered aluminium.
Patent GB-939460-A (GB)
Title: Improvements in or relating to fluid discharge control valves for pressurised fluid containers
Inventor: DUNN MICHAEL
IPC: B65D83/14
Filed: 1958-10-31
Abstract: 939,460. Delivering measured quantities of liquids. SPECIALITY VALVES Ltd. Jan. 29, 1960 [Oct. 31, 1958], No. 35041/58. Class 106 (5). [Also in Groups XXVIII and XXIX] With the parts in the position shown fluid from an aerosol container flows between the reduced or " D "-sectioned end 33 of a hollow plastic or stainless steel valve-stem 4 and a washer 7 into an annulus 16 between the stem 4 and a flanged body 8 of nylon or other plastic material, the opposite end of which latter is bounded by a curved washer 3 held in position over the concave end of the body 8 by a sheetmetal casing 2 secured to the aerosol container and sealed with respect thereto by a further washer 9. Upon depressing a knob 1 the fullsectioned part of the stem 4 enters the washer 7 and prevents any further fluid from entering the annulus; concomitantly a radial port 34 through the stem wall passes below the washer 3 and enables the measured quantity of fluid trapped in the annulus 16 to flow into the stem and from thence to a discharge orifice 39 in the knob. The stem 4 comprises two parts 30, 31 telescoped together, the part 31 having a flange 29, between which and a stainless steel disc 6 overlying the washer 7 is disposed a stainless steel spring 5. The washers 3, 7 and 9 are made of rubber or plastic material. The end 33 of the stem may be longitudinally grooved instead of reduced.
Patent GB-467446-A (GB)
Title: Stackable chairs, or seats
IPC: A47C3/04
Filed: 1935-12-18
Abstract: 467,446. Furniture joints. CHATWIN, A., and KINGFISHER, Ltd. Dec. 18, 1935, No. 35045. [Class 52 (ii)] Bracing and connecting members for nesting chairs in which the seat slab is narrower in width than the distance between the rear legs comprise attachment plates a, b in parallel planes and formed or connected to produce thickenings or distance pieces d. The plate a is screwed to the inside of the back leg, and the plate b to the side of the seat slab. A part c may be provided to be screwed to the outside of the front leg. Metal tubes f, Fig. 1, cranked at e to enter a recess in the front legs, may join the front and rear legs at each side. Specification 344,159 is referred to.
Patent GB-410884-A (GB)
Title: Improvements relating to steel lattice poles and towers
IPC: E04H12/10
Filed: 1932-12-10
Abstract: 410,884. Lattice posts. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., and SMITH, C. V. CROWTHER-, Hamilton House, Victoria Embankment, London. Dec. 10, 1932, No. 35064. [Class 20 (i).] Lattice posts formed of main elements 1, 2 connected by bracing members 3 have the bracing members omitted for a portion between two kicking blocks 6, 7 at different levels and the adjacent main members are turned inwardly towards each other and connected at their ends to form a triangular base portion. The ends may be connected by connecting plates 4 and the main members may be intermediately connected by a stiffener 8. For four main uprights, the base would be of pyramidal form.
Patent GB-167136-A (GB)
Title: Regulating valve for water and gas
IPC: F16K11/16
Filed: 1920-12-13
Abstract: 167,136. Platschick, B. July 24, 1920, [Convention date]. Manually-actuated multiple-way valves. - A manually-actuated valve device for simultaneously regulating the gas and water supplies to a waterheater has a diaphragm valve for controlling the water supply actuated by a screwed spindle which supports a lift valve adapted to control the gas supply. The leather diaphragm 19 is backed by a flexible metal diaphragm 20 and is clamped between two parts 1, 2 of the casing. The diaphragm is pressed against a seat surrounding the water inlet 5 by a head 13 formed on a spindle 10 screwed into a bonnet 3 and rotated by a milled head 12. The gas valve 15 which co-operates with a seat formed on a ledge 21 is slidably mounted on the spindle and is normally held against a packing 16 supported by a recessed shoulder 14 by a spring 17.