baber/WOPTO huggingface dataset:
Patent GB-769317-A (GB)
Title: Improvements in or relating to screwing machines and other machine tools
Inventor: MCMANUS NORMAN
Filed: 1954-02-26
Abstract: 769,317. Machine-tool details. WINN & CO., Ltd., C. May 19, 1955 [Feb. 26, 1954], No. 5679/54. Class 83 (3). A machine-tool comprises a rotating member 3, e.g. the operating-ring for the die-head of a screwing-machine, a non-rotating yoke or fork 4 for moving the ring 3 through the engagement in an annular groove 6 in the ring of one or more slippers 5 on the yoke, and brake means 9-12 for moving at least one of the slippers into engagement with the ring to bring it to rest, e.g. at the end of a screwing operation. The yoke is mounted for limited sliding movement on a pivot, at one end, and if only one of the slippers is movable in the yoke, cam means or a screw 11 and plunger 9 act against a spring 10, to clamp the movable slipper and displace the yoke until the other slipper also enters into clamping engagement with the opposite side of the ring. Alternatively, a common operating- handle may be arranged to move both slippers simultaneously in the yoke, or the slippers may be fixed rigidly to a divided yoke, the halves of which pivot to apply the brake. The slippers may be faced with friction-material to engage the base of the groove, or the sides of a groove of tapered section.
Patent GB-230106-A (GB)
Title: Method for the extraction of carbon monoxide from industrial gases
IPC: B01D53/62
Filed: 1925-03-02
Abstract: Carbon monoxide is absorbed from industrial gases containing it by means of a cuprous compound such as the oxide, sulphate or chloride suspended in sulphuric acid of 66 DEG  B<\>ae.  Both the carbon monoxide and the cuprous compound are liberated by heating, when the sulphuric acid is also regenerated and by the addition of water.  It is advantageous to pass the gas under treatment and the cuprous suspension in countercurrent and also to effect the absorption of the carbon monoxide when it has become less concentrated, at a lower temperature.  The carbon monoxide and hydrogen in water gas may be separated by the above-described process.  The gases to be treated must be free from ethylene and acetylene and preferably also oxygen as these substances are absorbed by the cuprous compound.  The Specification as open to inspection under Sect. 91 (3) (a) is not limited to the use of sulphuric acid of 66 DEG  B<\>ae. strength. This subject-matter does not appear in the Specification as accepted.
Patent GB-490769-A (GB)
Title: Improvements in and in the manufacture of squeezing or expressing bowls, calender bowls and such like products
IPC: D06C15/08
Filed: 1937-02-26
Abstract: 490,769. Rollers ; lap - forming apparatus. BAMFORD, D. Feb. 26, 1937, No. 5744. [Class 42 (ii)] [Also in Group IX] A calendering, embossing or like bowl is made from cotton or other fibre with the fibres radial or substantially so. The fibres e are formed into a lap f which is thicker at one edge than at the other so that when it is wound round the roller spindle it is of uniform thick ness. The table k on which the lap is formed is reciprocated endways and also transversely this latter being to different extents as indicated. Specification 415,292 is referred to.
Patent GB-639554-A (GB)
Title: Improvements in and relating to the production of hydrogen-containing gases
Inventor: STANNAGE WILLIAM
IPC: C01B3/06
Filed: 1947-02-28
Abstract: Hydrogen is produced by bringing steam into contact with material containing ferrous oxide at a temperature not more than 120 DEG  C. higher than the temperature below which ferrous oxide is unstable, i.e. 565-580 DEG  C.; the ferrosoferric oxide produced is subsequently reduced by contacting it with a reducing gas at a temperature not less than 220 DEG  C. higher than the temperature below which ferrous oxide is unstable.  The ferruginous material may be in a stationary bed which is successively subjected to steam and reducing gas, or in a fluidized bed when the steaming and reducing steps may be carried out in the same or separate vessels with, in the latter case, continuous circulation of ferruginous material between the vessels.  Particulate ferrosoferric oxide is fed to a fluidized bed maintained at 900-1000 DEG  C. in the reducing vessel, by the passage of preheated producer gas therethrough.  Ferrous oxide-containing material is withdrawn from the bottom of the reducing vessel, cooled to 580 DEG  C., and fed to a fluidized bed maintained at 600-700 DEG  C. in a second vessel, by passage of steam therethrough.  The ferrosoferric oxide material is withdrawn from the bottom of the second vessel and heated to 1200 DEG  C. before return to the reducing vessel.  Specifications 288,154, (Class 90), and 586,914 are referred to.
Patent GB-1332085-A (GB)
Title: Process for producing woven fabrics or nonwoven fleeces
IPC: D06M23/18
Filed: 1972-02-08
Abstract: 1332085 Finishing edges FEZFABRIKEN GmbH 8 Feb 1972 [9 Feb 1971] 5853/72 Heading B5K [Also in Division D1] The cut edges of a woven or non-woven fabric made of synthetic yarns, threads or fibres are coated with a mixed polyamide solution to prevent fraying. Preferably, the fabric, prior to coating, is formed by longitudinally slitting a wider fabric. Preferably, the coating is a mixed polyamide of caprolactam, hexamethylenediamine/adipic acid and p,p<SP>1</SP>-diaminodicyclohexylmethane/adipic acid in an organic solvent. The polyamide coating is condensed, e.g. by infra-red lamps, after drying. Specified fabrics are a fabric woven from multi-filament polyester thread and a non-woven fleece of polypropylene staple fibres.
Patent GB-1399665-A (GB)
Title: Support for generator bearing
IPC: F16C35/077
Filed: 1973-02-06
Abstract: 1399665 Dynamo-electric machines BENDIX CORP 6 Feb 1973 [8 Feb 1972] 5870/73 Heading H2A [Also in Division F2] In a generator comprising an armature shaft 8 mounted for rotation with respect to a housing 2 by a ball bearing 5, the shaft and the housing having different temperature coefficients of thermal expansion, the ball bearing is supported by a hub 15 which is, in turn, supported from the housing by a plurality of spokes 16, the spokes being constructed and arranged to prevent movement of the bearing in a radial direction while permitting limited movement of the bearing relative to the housing in an axial direction whereby differential changes in dimension of the shaft and housing due to changes in temperature are accommodated. The spokes are arranged in two rows of six, the spokes in the two rows being displaced from one another by 30 degrees. The spokes are tightened sufficiently to be prestressed. An auxiliary bearing 13 is mounted on the shaft between snap rings 12, 12A and rotates therewith. The hub 15 has a flange 30 surrounding the bearing 13 with a groove 31 extending around its inner periphery. A wire 32 is mounted in the groove by insulation material, and some of the insulation is cut away when the hub is machined. Normally, there is a small clearance between the outer race of the bearing 13 and flange 30. If the main bearing 5 fails, the auxiliary bearing contacts the exposed portion of the wire to complete a circuit to an indicator lamp 29.
Patent GB-129392-A (GB)
Title: Improvements in the Manufacture of Metallic Lead Powder and Lead Paints.
Inventor: NELSON JOHN
IPC: B22F9/24
Filed: 1918-04-09
Abstract: 129,392. Nelson, J., and White, W. C. April 9, 1918. Pigments.-Relates to the preparation of a dry amorphous lead powder which may be mixed with vehicles, fillers, colouring matters &c. for use as a paint. The lead is precipitated from a solution of a lead salt by means of zinc or zinc and iron, and is washed and dried. A solution of lead sulphate in sodium chloride, or of galena in hydrochloric acid, may be precipitated by means of scrap zinc or galvanized iron, and the precipitate is washed, and dried in vacuo or an inert atmosphere, preferably at not above 100‹ C. while being gently agitated in a rotating cylinder through which a current of inert gas is circulated.
Patent GB-845613-A (GB)
Title: Improvements in road marking studs
IPC: E01F9/07
Filed: 1959-02-23
Abstract: 845,613. Reflex reflectors. McROBBIE, J. A., and McROBBIE, A. F. Feb. 23, 1959, No. 6088/59. Addition to 845,612. Class 3(2) A reflex reflector or road stud as disclosed in the parent Specification incorporates a reflector carrier which is removably mounted in its casing by pin-and-slot connections b, k permitting a large degree of relative vertical and lateral movement therebetween in order to accommodate any direction of loading thereon. The carrier may comprise a slotted resilient moulding or a non-resilient moulding having nylon or U-shaped plastic or sprung copper pressings defining the slots k.
Patent GB-1596602-A (GB)
Title: Preparation of silver halide emulsions
IPC: G03C1/035
Filed: 1978-02-16
Abstract: A process for the preparation of silver halide emulsions of the twinned type is described, passing through the following process stages: (i) Formation of silver halide crystals containing at least 90 mol% of iodide in a colloidal dispersing medium, these crystals predominantly having the hexagonal lattice structure, (ii) admixing aqueous silver salt solution and an aqueous solution of alkali metal or ammonium bromide or chloride or mixtures thereof to the dispersing medium containing these silver halide crystals, in order to form silver halide crystals which contain iodide and the added halide or halides, the rate of addition of the silver salt and of the alkali metal or ammonium halide being controlled in such a way that the silver halide crystals formed in this stage are predominantly twinned, if appropriate (iii) addition of further aqueous silver salt solution and further alkali metal or ammonium halide to the colloidal dispersion in order to cause the twinned crystals to grow in size, and finally, if appropriate, (iv) removal of the water-soluble salts formed and chemical sensitization of the emulsion. The novel photographic emulsions have a high sensitivity and good hiding power.
Patent GB-801066-A (GB)
Title: Improvements in or relating to electron-optical benches
IPC: H01J29/82
Filed: 1956-02-28
Abstract: 801,066. Electron lenses. ARDENNE, M. VON. Feb. 28, 1956 [June 2, 1955], No. 6098/56. Class 39(1). In an electron-optical bench, in which individual structural elements are fixed on a base or rail of the bench having a supporting surface with the electron-optical axis as its axis of symmetry, the structural elements are provided with a high vacuum sealing means displaceable in the direction of the electron-optical axis for sealing adjacent structural elements, which allows these elements to be removed and replaced without adjacent elements changing their position. As shown in Fig. 1 each structural element, e.g., a lens compartment 5 is provided on one side with a rotatable disc 6 having a bore 7 by engagement of which with a suitable tool the disc may be rotated, the disc 6 having a threaded inner periphery in engagement with a threaded ring 9 constrained to move laterally by a pin 10 projecting into a socket on the component. The ring 9 is provided with a silicone rubber gasket 11 located between opposing surfaces of two adjacent components 5 and the ring 9 can be moved axially into a recess 8 on the next adjacent component 5. On insertion of a component the disc 6 is rotated with consequential axial movement of the ring 9 to compress the gasket 11 to form a vacuum seal between the components. The components 5 are mounted by means of clamps 4 on a base assembly comprising parallel rails 1 and x - members 2, the lens-contacting faces 3 of the rails 1 being microfinished to the same diameter as the lens components 5. The components may be utilized in an electromicroscope with a fluorescent observing screen 3, Fig. 3, obliquely placed in relation to the main screen L which may be a photographic plate P, electrostatic or magnetic means being used to deflect the beam from one screen to the other.
Patent GB-540143-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L5/30
Filed: 1940-04-05
Abstract: 540,143. Vacuum cleaners. HOOVER, Ltd. April 5, 1940, No. 6155. Convention date, April 17, 1939. [Class 8 (i)] A suction cleaner comprises a wheeled frame supporting the transverse cylindrical casing 3 of a fan, integral and rotatable with the handle and the dust-bag connection. The forward part 10 of the frame forms the lower part of the suction mouth which is completed by a removable cover 19 secured to the frame by a beading 19a and recess at the forward end and by a latch 31 and pin 32 at the rear. This cover provides an air duct leading to the fan, and a passage for the driving belt 15 of the agitator. The frame also carries a lamp 18 enclosed in a cylindrical reflector 17 the forward edges of which register with a window formed in the cover.
Patent GB-1253885-A (GB)
Title: Synchronized solid state relay
Inventor: BAKER EDWARD S
IPC: H02M1/08
Filed: 1969-02-05
Abstract: 1,253,885. Switching circuits. BOEING CO. 5 Feb., 1969, No. 6218/69. Heading H2H. System for supplying a load with A.C. by way of an anti-parallel pair of thyristors includes a timing circuit designed to ensure switching at times when the line voltage is zero. As shown in Fig. 1, with a main switch 51 in the open position, current from the supply 10 flows to earth during each positive halfcycle through resistors 28, 40, 39, 42 and diodes 27, 38 so that gating signals are applied to a thyristor 31. Current now flows through this thyristor rather than through the parallel circuit containing a resistor 41, and so a further thyristor 29 is held in the non-conductive condition. Hence, there is no current flow in the primary winding 25 of transformer 18. When switch 51 is closed, current is diverted to ground by way of diode 50, so that the gating signals to thyristor 31 cease, and now the other thyristor 29 can conduct, so allowing current flow in the winding 25. The presence of the capacitor 26 and resistor 40 maintains the voltage at the supply end of the winding 25 appreciably advanced in phase compared with the supply, and as a result, a gating signal is supplied to main thyristor 14 through secondary winding 17 before the main power is of the correct polarity, but the signal is sufficient to ensure that the thyristor 14 conducts current to the load 11 as soon as the polarity across it changes. During the positive half-cycle, the phase advance of the voltage on winding 25 decreases because of the presence of resistor 28 in parallel with capacitor 26, so that current in the winding 25 is cut off just prior to polarity reversal of the supply. At this time, the transformer 18 generates a pulse in a further secondary winding 22 to gate on the other main thyristor 19 for the negative half-cycle of the supply. Instead of closing the switch 51, a D.C. signal may be supplied to the base of a transistor 63 to open a path to ground in a similar way. The system may be adapted for controlling a three-phase supply, Fig. 3 (not shown).
Patent GB-1504404-A (GB)
Title: Means and method for eddy current testing
IPC: G01N27/90
Filed: 1975-02-14
Abstract: 1504404 Eddy current flow detectors MAGNETIC ANALYSIS CORP 14 Feb 1975 [15 Feb 1974] 6247/75 Addition to 1484696 Heading G1N The invention relates to a modification of the eddy-current testing apparatus employing a monoturn conductive member associated with the exciter coil, as described in Parent Specification 1484696. In the present apparatus a SEGMENTED MONOTURN is used having two or more sections, such as 61, 61', which are inserted into a housing 51 containing the primary energizing and detector coils. The segments are held in the housing by a clamping ring 67. This enables the apparatus to be assembled on a test piece having an enlarged end 29.
Patent GB-143484-A (GB)
Title: Improvements in or relating to hat leathers
IPC: A42C5/02
Filed: 1920-03-02
Abstract: 143,484. Dean, J. N. March 2. 1920. Addition to 143,479. Ventilating.-For causing the hat leather to " float " or remain at a distance from the hat, as described in the parent Specification, the edge of the usual ventilating and connecting tape a is restricted either by a line of tension stitches b, or by a line of embroidery or like stitches c. The tape is afterwards attached to the hat leather d and hat in the usual manner. Specifications 16243/11 and 16109/12 are referred to.
Patent GB-577087-A (GB)
Title: Improvements relating to milk cooling devices
IPC: A01J9/04
Filed: 1944-04-04
Abstract: 577,087. Cooling milk. KINGSTON, J. A., and GASCOIGNES (READING), Ltd. April 4, 1944, No. 6261. [Classes 29 and 64 (iii)] Means for cooling milk as it is filled into an ordinary transport churn or can 1 from a hopper 14 comprises a jacket for cooling-water in two separable parts, viz., a body portion 4 having a shoulder portion to correspond with the shoulder part of the can, and a base portion 3 on to which the body portion is clamped by bolts 8. The can rests on blocks 2 and a packing- ring 7 is provided inside or outside a centering flange of the base. Spiral or other ribs 5 or spacing members are provided between the can and jacket, and water is supplied through a conduit 9 in the base and discharged at the top at 10, or vice-versa. The can is held down against flotation when empty by the bearing of the jacket shoulder on the can handles 11, or in a modification for a cylindrical jacket, by stop members on the jacket. The hopper is fitted with means for discharging the milk as a film over the inside of the can wall, such as a cone 12 surrounding a central vent pipe 13, or a pan bottom with circumferential perforations.
Patent GB-720405-A (GB)
Title: Improvements in or relating to closures for undercarriage and like apertures in aircraft
Inventor: HOLMES-SMITH JOHN FRANKLIN
IPC: B64C25/16
Filed: 1952-03-12
Abstract: 720,405. Doors for aircraft structures. BOULTON PAUL AIRCRAFT, Ltd. March 12, 1953, [March 12, 1952], No. 6391/52. Class 4. A closure for an aperture in an aircraft comprises constantly spaced members arranged to stiffen the aircraft structure on opposite sides of the aperture and forming runways for a roller type door movable in said runways to open and close the aperture, and consisting of channelshaped elements hingedly connected together and driven by notched wheels or cogs which mesh with the door elements. Channel-section runways 1, held apart by spacing strips 2, are located on opposite sides of an aperture A in the aircraft structure. The door consists of channel-shaped elements 3 of pressed sheet or extruded material formed with interlocking ends 8, 9 and mounted on hinge pins 10 which, at their extremities, carry rollers (not shown) to engage in the runways 1. A spindle 12, driven by an hydraulic or electric motor 14, carries cogs 11 which engage the projections 9 whereby, when the motor is energized, the flexible door will cover or expose the aperture A. An emergency manually operated drive 15-18 is provided.
Patent GB-280772-A (GB)
Title: Hornless loud speaker
IPC: H04R9/04
Filed: 1927-03-08
Abstract: 280,772. Bothe, O. March 8, 1927. Loud-speakers; magnetic instruments; diaphragms.-In a hornless loud-speaker having a diaphragm freely oscillating parallel to itself, the diaphragm g is centred by a thin non- perforated plate c secured at its centre to the diaphragm and rigidly clamped around its edge to the casing b. The diaphragm is preferably formed from a coarse meshed fabric stiffened by a filling material, such as copal varnish. The diaphragm is produced by moistening a comparatively coarse meshed fabric, such as gauze, cambric, spartery, &c., stretching the moistened fabric over a frame corresponding in shape with the desired shape of the diaphragm, and subsequently drying and impregnating it, e.g. with copal varnish. As shown, the diaphragm is actuated by a moving coil d provided at its centre with a cylindrical extension i which passes through the plate c and is cemented in a hollow extension s on the conical stiffening member k at the centre of the diaphragm g. The coil d is located in an annular magnetic air-gap j formed between the cylindrical core e and the front portion of a hollow spherical ring a. The apparent resistance," i.e., the resistance vectorially composed of the ohmic resistance and the purely alternating resistance of the coil, is made, equal to the internal resistance of the amplifying valve so that the anode current of the amplifying valve can be conducted directly through the coil without the interposition of a low frequency transformer between the valve and loud-speaker. The flat rim of the diaphragm g is clamped between a ring r, secured by arms h to the casing b, and a frame l screwed to the ring r and of such a width as to prevent the sound waves from passing round from one side of the diaphragm to the other.
Patent GB-1379771-A (GB)
Title: Decoder for quadruphonic sound
IPC: G11B20/00
Filed: 1972-02-11
Abstract: 1379771 Four loud-speaker stereo systems CBS Inc 11 Feb 1972 [24 Feb 1971] 6581/72 Heading H4R In a matrix for decoding four signals, to be fed to the four loud-speakers of a quadrophonic reproduction system, from two channels in which the original signals L f , L b , R f  and R b  are combined, as described in Specification 1,347,993, so that each channel carries a respective front signal, R f  or L f  plus a prop ortion of each of the rear signals R b  and L b , in quadrature with each other and respectively leading and lagging the main signal in one channel and lagging and leading the main signal in the other channel, the decoding matrix includes phase shifting circuits 154, 156, 158, 160 connected to derive from the signals in each of the channels two signals bearing a quadrature phase relation, i.e. 162, 184, and 190, 168. Two of these signals, 162, 168, are used direct for reproduction as "front" signals L f <SP>11</SP> and R f <SP>11</SP> and in addition signals from each channel are combined in circuits 182, 188, to provide two signals having respectively predominant Lb and R b  components for reproduction as "back" signals. The output signals are fed to the reproducers 170, 172, 174, 176, via amplifiers 178, 180, 186, 192, whose gain is controlled by a logic circuit, Fig. 1b (not shown), which is of the type described in co-pending Application No. 6580/72.
Patent GB-491527-A (GB)
Title: Manufacture of di-(y-chloro-ª‡- or ª‰-oxypropyl)-arylamines
IPC: C07C215/16
Filed: 1937-03-05
Abstract: Di - (g  - chloro - a  - or b  - oxypropyl)-arylamines are manufactured by heating in an organic solvent an aromatic amine with epichlorhydrin in the molecular proportion of 1 : 2, the epichlorhydrin being preferably slightly, e.g. 10 per cent, in excess of this ratio.  The products are dyestuff intermediates. In examples: (1) aniline and epichlorhydrin are refluxed with carbon tetrachloride yielding di-(g -chloro-b -oxypropyl)-aniline and an isomeric compound; (2) m-toluidine and epichlorhydrin are mixed in methanol, whereby spontaneous heating takes place with the production of a mixture of isomers from which 1 - methyl - 3 - di - (g  - chloro - b - oxypropyl)-aminobenzene is separated; (3) 1-methyl-3-amino - 4 - methoxybenzene and epichlorhydrin are refluxed with methanol, and 1-methyl - 3 - di - (g  - chloro - b  - oxypropyl)-amino - 4 - methoxybenzene is precipitated by adding hydrochloric acid and cooling with ice.