baber/WOPTO huggingface dataset:
Patent GB-831304-A (GB)
Title: Improvements in or relating to refining processes for semiconductor and other materials
Inventor: STERLING HENLEY FRANK
IPC: C30B13/06
Filed: 1956-10-16
Abstract: <PICT:0831304/III/1> <PICT:0831304/III/2> Impure solid materials are zone-refined by arranging a rod of the solid vertically, melting an annular zone surrounding an inner unmelted portion and moving the molten zone along the rod so that it is all subjected to melting except an inner core, parallel to the axis of the rod.  As shown, a rod 8 of impure material, silicon for example, is carried by shaft 6 which passes through a bush 5 in base plate 2 of the glass or quartz envelope 1 provided with an inlet 3 and outlet 4 for an inert gas such as argon.  An induction coil 9, in the form of a metal plate slotted at 11, surrounds the envelope, the coil being placed eccentrically with respect to the axis of the rod 8 so that the crosssection of the left-hand side 16 of the melted annular portion is larger than the right-hand side 17.  The shaft 6 is moved vertically without rotation and all the material of the rod is melted except a central core.  The rod is then rotated through 180 degrees and the melting process repeated, whereby all portions of the rod are eventually subjected to melting.  In a modification, the surface of silicon ingots, produced by the thermal decomposition of silane, is smoothed by arranging the coil 9 coaxially with respect to the rod 8 and performing the melting as described.  Reference has been directed by the Comptroller to Specification 769,673.
Patent GB-1343008-A (GB)
Title: Fishing reels
IPC: A01K89/017
Filed: 1972-06-19
Abstract: 1343008 Fishing reels TOKYO KINZOKU KK 5 July 1972 [6 July 1971] 31451/72 Heading A1A A spool 1 of the reel is rotatably mounted on and driven by a motor 4. The driving shaft of the motor carries a gear 6 which engages an internal gear 3 either along its entire periphery, along only a part thereof or via a further gear.
Patent GB-1451152-A (GB)
Title: Rapid battery charging system and method
IPC: H02J7/10
Filed: 1974-07-16
Abstract: 1451152 Battery charging circuits MOTOROLA Inc 16 July 1974 [6 Aug 1973] 31487/74 Heading H2H A circuit for rapidly charging a battery 10 comprises a battery temperature sensor 11, a differentiating circuit 16 for providing a signal representative of the rate of change of battery temperature, a power supply 12 and a charge control circuit 13 for supplying battery charging current at a first level when the signal from the differentiating circuit is below a predetermined value and reducing the charging current when the signal is above the predetermined value. The sensor 11 is a thermistor associated with the battery and when the thermistor is connected in a bridge circuit 15, the bridge is balanced. The positive output of the differentiating circuit 16 is applied to the anode of an S.C.R. 45 which is switched on by the gate signal supplied by the battery 10 via resistors 40, 47 and a capacitor 48. The conduction of the S.C.R. 45 reduces the gate potential of an S.C.R. 38 to prevent its conduction and also causes a transistor 51 to conduct thereby switching on a transistor 43. An S.C.R. 57 is therefore held non-conductive and the battery 10 receives a trickle charge via a resistor 58. A few seconds after connecting the thermistor, a capacitor 25 becomes discharged and the output of the circuit 16 is reduced to zero so that the states of the semi-conductors 45, 51, 43, 57 are reversed and a high charging current is supplied to the battery. The battery heats up and towards the end of the charging process the sudden rise in the battery temperature causes the output of the circuit 16 to rise sufficiently to switch on the S.C.R. 38 thereby switching on the transistor 43 and switching off the S.C.R. 57 so that the battery charge is reduced to a trickle. A circuit 17 is provided with Zener diodes 73, 75 so that if the battery temperature is below 5 or above 40 C. the transistor 43 is caused to conduct thereby enabling only a trickle charge for the battery. A red lamp 100 in an indicator circuit 18 is illuminated when the rapid charge is in progress and a green lamp 103 is illuminated during the trickle charge of the battery.
Patent GB-870737-A (GB)
Title: Process for extracting acetylene from pyrolysis gases obtained by the thermal decomposition of hydrocarbons
Inventor: BRACONIER FREDERIC FRANCOIS AL
IPC: C07C7/11
Filed: 1958-10-02
Abstract: <PICT:0870737/IV (b)/1> Acetylene is recovered from pyrolysis gas, which has been freed of carbon black, tar, carbon dioxide, moisture and condensable hydrocarbons, by washing with kerosene at -10 to -40 DEG C. and under pressure to dissolve selectively higher acetylenes and unsaturated hydrocarbons other than acetylene and ethylene, selectively dissolving the acetylene in the remaining gas in anhydrous liquid ammonia at -10 to -70 DEG C. and under pressure and recovering the acetylene from the resultant solution.  Pyrolysis gas is stored in gas holder 2, then washed with aqueous ammonia in tower 4 to remove carbon dioxide, mixed with methanol and cooled in cooler 5 to remove water and liquid hydrocarbons.  The gas is contacted in tower 9 with kerosene, e.g. boiling between 175 and 225 DEG C. and having a molecular weight of 180, at 1-10 atmospheres. The solution is stripped to remove acetylene and ethylene which are recycled then further stripped of other gases before being returned to tower 9. Overhead gas from tower 9 is contacted with liquid ammonia in tower 20 at 1 to 10 atmospheres.  By partial expansion and/or heating, ethylene and some acetylene is released in tower 27 and recycled. Acetylene is recovered in tower 30 and washed with water to remove ammonia.  Part of the liquid ammonia is distilled to remove high boiling impurities before recycling.
Patent GB-1049854-A (GB)
Title: Improvements relating to road vehicle hydraulic braking systems
Inventor: REYNOLDS DESMOND HENRY JAMES
IPC: B60T11/24
Filed: 1962-08-17
Abstract: 1,049,854. Master cylinders. GIRLING Ltd. Aug. 13, 1963 [Aug. 17, 1962], No. 31607/62. Heading F2F. A road vehicle hydraulic braking system includes a master cylinder actuable by a wedge movable in a direction at right angles to the cylinder axis, or in a direction at an acute angle thereto, the wedge being moved by a pedal or by power means. Two master cylinders 10, 11 supplying fluid independently to the front and rear wheel brakes have piston rods 14 carrying rollers 15 engageable by a wedge 17 pivoted to the power output rod of a servo 13. The wedge may have curved sides to provide a rapid early movement of the piston rods to take up brake clearance, followed by a slower movement as pressure builds up. In a modification (Fig. 7, not shown) the inclined faces of the wedge engage pivoted rockers actuating tappet rods abutting the master cylinder piston rods.
Patent GB-834190-A (GB)
Title: Improvements in or relating to pneumatic pulsators
IPC: A01J5/10
Filed: 1958-10-03
Abstract: 834,190. Pulsators. SEPARATOR A. B. Oct. 3, 1958 [Nov. 22, 1957], No. 31626/58. Class 84. [Also in Group XXIX] In a pneumatic pulsator that produces equally long vacuum and pressure periods and is provided with two channels subjected to the vacuum and pressure variations, one being under pressure when the other is under vacuum and vice versa, there is inserted into each channel a valve designed to give greater resistance to flow of gas in one direction than in the other to render the vacuum and pressure periods at the point of application unequal. The valves may be as shown in Fig. 3, in which a channel 7 has an enlarged portion 6 at the end attached to the pulsator, this enlarged portion containing a ball 5. On the application of pressure and vacuum periods the ball is blown into and out of the reduced portion, its movement being limited by a stop 11. The valve thus offers a greater resistance to flow during pressure periods than during vacuum periods as indicated by the size of the gaps 12 and 8.
Patent GB-206375-A (GB)
Title: Improvements in or relating to handbags and the like
IPC: A45C15/06
Filed: 1922-11-21
Abstract: 206,375. Dunhill, A. Nov. 21, 1922., Addition to 183,773 and 183,780. No Patent granted (Sealing fee not paid). Bags.-In an electricallyilluminated hand-bag or the like as described in the parent Specifications, the wiring connections are housed in a groove or rebate w formed in the frame of the bag &c.
Patent GB-1353489-A (GB)
Title: Semiconductor device manufacture
IPC: H01L21/32
Filed: 1971-07-07
Abstract: 1353489 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 7 July 1971 [10 July 1970] 31841/71 Heading H1K A recess 4, Fig. 6, is etched in a semi-conductor body 1 using a mask 10 and the masking effect of the edge 11 of the mask 10 overhanging the recess 4 due to undercutting by the etchant is used to define a part of the recess into which dopant is introduced. Finally the recess 4 is at least partly filled with oxide by local oxidation. The structure of Fig. 6, formed from an N-type Si body having diffused therein a P-type layer, is used to manufacture a target for a TV. camera tube, the target comprising an array of mesa diodes. Channels between adjacent diodes are prevented by the presence of an N<SP>+</SP> region formed locally at the bottom of the recess 4 by ion implantation into an area defined by the mask 10, the Si beneath the overhang.11 of the mask 10 being shielded against this dopant. Alternatively the dopant for the channelstopping region may be vapour deposited, the overhang 11 having a similar masking effect in this case. Fig. 10 illustrates an IGFET having a P<SP>+</SP> channel-stopped region 28 formed beneath an inset oxide layer 29 using the same masking principal as that described above. Fig. 17 illustrates a Si integrated circuit formed in an N-type epitaxial layer on a P-type substrate 41. Lateral isolation of the bipolar transistor shown is effected by the combination of an inset ring 43 of oxide and an annular P-type zone 44 diffused into the bottom of the recess containing the oxide 43. In this case, since the dopant is not directed through the overhanging mask (52), Fig. 21 (not shown), in a well-defined stream it is necessary to use the overhang to define the area of a second mask (56) within the recess (55). A photoresist technique is used for this process. In Fig. 23 a bipolar transistor in a Si integrated circuit has an emitter region 66 diffused into an island base region 62, the collector region being defined by a buried layer 63 and a further zone 64 selectively diffused into a peripheral part of recess which is subsequently filled with oxide 65. In this case the area of mask defining the diffusion area for the zone 64 is itself determined by a secondary mask deposition step within the recess employing the overhang of a main mask on the major surface. Preferably, as shown, further material is etched from within the recess prior to diffusion of zone 64. Other devices to which the invention is applicable include a Schottky diode (Fig. 29, not shown) having a guard ring around the Schottky barrier. SiC is also referred to as a suitable semiconductor material. As an alternative to simply etching the recesses in the various embodiments the semi-conductor material may be selectively oxidized through a mask and the oxide may then be removed by etching, the overhang essential to the working of the invention also being formed by this process. Carrier-lifetimedetermining dopants may be introduced locally into part of a recess in a semi-conductor body in accordance with the invention.
Patent GB-716480-A (GB)
Title: Electro-magnetic pick-up for gaging devices
Inventor: GRAHAM ERWIN WILLIAM
IPC: G01B7/14
Filed: 1952-12-16
Abstract: 716,480. Electric gauges. GRAHAM-MINTEL INSTRUMENT CO. Dec. 16, 1952, No. 31858/52. Class 40 (1). In a linear dimension gauge, e.g. as disclosed in Specification 669,433, the magnetic pick - up comprises an armature, movable axially by the feeler, and co-operating with three coils, a centre coil having a pole face adjacent the longitudinal centre and on one side of the armature, and a pair of coils having pole faces adjacent to and overlapping the ends of the armature and disposed on the opposite side thereof. As shown, the feeler 40, Fig. 2, is carried by a rigid spindle 43 mounted by leaf springs 48, 49 on a base member 24 which carries the magnetic circuit members 57, 60, Figs. 2, 3 on which the. three coils 54, 55, 56 are mounted. The armature consists of a ring 46 secured to the spindle 43 and co-operates with the central pole face 59 of coil 54 and the pole faces 63, 64 of coils 55, 56 which overlap the ends of the armature and are disposed diametrically opposite the pole face 59. The armature has plane surface portions 65, 66, Fig. 3, adjacent the pole faces, and the pole faces 63, 64 are rectangular in shape and very thin in the axial direction to enhance sensitivity. The axial movement of the armature is limited by stops 15, 75 and the leaf springs 48, 49, are slotted, Fig. 6 (not shown), adjacent their support points and have flanged edges 70 so that they yield only adjacent their support points. The armature length is kept short relative to that of its supporting spindle and is remote from the feeler point 40. Coarse vertical adjustment of the feeler is provided by the usual rack and pinion (not shown) and fine adjustment is effected by a differential screw 30 rotated by a knob 34. The coil 54 may be energised and the normally balanced opposing coils 55, 56 series connected to the output as in Specification 669,433, or the coils 55, 56 may be energised in series opposition and the coil 54 used as the output coil.
Patent GB-935943-A (GB)
Title: The supporting of rotors of electrical machines
Inventor: UPTON GEORGE FRANK
IPC: F04D25/06
Filed: 1959-09-21
Abstract: 935,943. Bearings. D. NAPIER & SON Ltd. Sept. 21, 1960 [Sept. 21, 1959], No. 32036/59. Class 12 (1). [Also in Group XXXV] A fluid bearing supports a rotor which, along with a stator, is mounted in a casing. The rotor 10, Fig. 1, and stator 12 are in the casing 13 and fluid is supplied through a passage (not shown), to an annular space 14 between the rotor and the casing. In an embodiment the rotor 20 and an impeller 21, Fig. 3, of a sealed electric motor and centrifugal compressor assembly, are axially connected and have a radial flange 22 therebetween. An axial extension 23, of the flange 22, forms a fluid bearing with a sleeve 29 attached to the casing 28, and a flange 31, on the extension 23, is forced by the fluid into engagement with a thrust-ring 32 which is mounted on fluidfilled annular-shaped bellows 33 attached to the casing. The bearing is supplied by pressurized fluid which passes through a bore 34 in the flange 22 and enters a chamber 24 from where it passes between a cylindrically-shaped member 26 supporting the stator 25 and into the annular space between the extension 23 and the sleeve 29. Cooling passages 37 are provided in the member 26, and the rotor, having a central boss 35 at one end, is further, supported by a bearing 36 carried by an end wall 27 of the casing. Inlet and outlet passages 38, 40 are provided in an end wall 39 of the casing 28.
Patent GB-1062789-A (GB)
Title: Improvements relating to a writing device
Inventor: MATSUMOTO HIROYUKI
IPC: B43K5/18
Filed: 1965-07-27
Abstract: 1,062,789. Reservoir pens. DAI NIHON BUNGU KABUSHIKI KAISHA. July 27, 1965, No. 32051/65. Heading B6P. The nib 2 of a reservoir pen has a plurality of longitudinal grooves 8 in its surface, which communicate with a longitudinal passage in a feed bar 1. A rod 10 with a capillary groove 11 extends from the reservoir cartridge 9 to the passage in the feed bar 1. In modifications of the nib, Figs. 5 to 10 (not shown), the nib is covered with synthetic plastic shield, except for the writing extremity, so that grooves 8 are not open to atmosphere, thereby preventing drying of the ink.
Patent GB-745319-A (GB)
Title: Improvements relating to the vertical retorts for the carbonisation of coal
IPC: C10B33/02
Filed: 1953-11-19
Abstract: 745,319. Discharging vertical retorts. WEST, Sir F. J., WEST, E., and WEST'S GAS IMPROVEMENT CO., Ltd. Oct. 26 1954 [Nov. 19, 1953], No. 32134/53. Class 51 (2). In the coke discharge chamber of a vertical retort having a sealing door connected with an inner door hinged at one end so that its free end moves in close proximity to a curved wall of the chamber co-axial with the door hinge, links pivoted to the underside of the inner door near its free end are pivoted to the upper side of the sealing door at points on the opposite side of the pivotal supports of the sealing door in. a frame hinged to the same side of the chamber as the inner door, so that operation of the frame operates both doors, but the sealing door is tilted to discharge liquid before the inner door is opened. The sealing door i is pivoted on a frame m rotatably mounted in brackets o, Fig. 2, attached to the side of the chamber at which the inner door a is hinged. Links f connect the inner and sealing doors. A lever t' operates the frame m and both doors through links r, q, p. A stop r limits the over-centre movement of the links r, q, and causes the doors to remain closed by their own weight. Operation of the lever t<SP>1</SP> first straightens the linkage r, q, moving the arm p so as to lift the hinges of the sealing door i and tilt it in the frame m to discharge liquid. Further movement of the lever t<SP>1</SP> reduces the angle between the links r, q, and lowers the frame m together with the inner and sealing doors. The stop v and the link q are made adjustable, and overflow apertures in the lower part of the coke discharge chamber pass through a seal, Fig. 4 (not shown). Specification 710,526 is referred to.
Patent GB-305314-A (GB)
Title: An improved fitting for suspending garments in trunks, ward-robe-trunks, wardrobes and the like
IPC: A47B61/06
Filed: 1927-11-29
Abstract: 305,314. Launder, J. A. Nov. 29, 1927. Garment racks.-A device for suspending garments in a wardrobe &c. consists of a rail b, to receive garment hangers, provided with a hinged curved extension rail a which, when the wardrobe &c. is open, is held in line with the rail b by a foot member f pivoted to the door of the wardrobe &c. The ends s, t of the foot member are turned down to engage sockets attached to the wardrobe &c. door, the arrangement being such that when the foot is swung out of the door it is lowered to rest on the ground, the end c of the rail a engaging a hole q in the foot which is provided with a reduced part r which engages a hole (not shown) in the rail a.
Patent GB-1339357-A (GB)
Title: Polyurethane resins and a process for their production
IPC: C09D175/04
Filed: 1971-07-09
Abstract: 1339357 Polyurethane resins BAYER AG 9 July 1971 [11 July 1970] 32289/71 Heading C3R Polyurethane resins are obtained by shaping with removal of water from emulsifier-free latices prepared by dispersing polyurethanes in aqueous organic solvents and subsequently removing the solvent. The polyurethanes are prepared by reacting polyols (M.W. 350-10,000), polyisocyanates, optionally chain extenders and equimolar addition products of the alkali metal salts of α-olefinic carboxylic acids and aliphatic diamines; the amount of addition product is such that the dry polyurethane resin contains 0À2-1À0% of CO 2 - groups. The latices may be free from solvent and have a solids content >40%. The resins may be vulcanized, e.g. by heating. Uses.-Films, foils and coatings.
Patent GB-447104-A (GB)
Title: Improvements in or relating to tuning systems for wireless receivers of the supersonic-heterodyne type
IPC: H03J3/28
Filed: 1935-11-21
Abstract: 447,104. Valve circuits for wireless reception. ALADDIN RADIO PATENTS, Ltd., and HEBARD, H. C., Aladdin Building, Greenford, Middlesex. Nov. 21, 1935, No. 32319. [Class 40 (v)] In a superheterodyne receiver tuned by means of a variable inductance having a movable magnetic core a padding inductance is provided in the oscillator to restrict the range of variation and to enable the oscillator and signal tuning units to be identical and gang controlled. The Figure shows the oscillator arrangement to operate on two wave ranges the parallel inductance 4 decreasing the effective inductance on the shorter waverange and the inductance 18 on the longer wave-range. An additional series padding inductance 17 which is short-circuited on the shorter wave-range and operative on the longer wave-range may be provided so that the oscillator may be correctly tracked at both ends of the tuning range. The waverange switch 3 also connects a loading condenser 19 on the longer wave-range. Values of components are given for operation over the ranges of 150-300 and 550-1500 kilocycles.
Patent GB-851404-A (GB)
Title: Improvements in or relating to stereo viewers
IPC: G02B27/22
Filed: 1956-10-23
Abstract: 851,404. Stereoscopic apparatus. KODAK Ltd. Oct. 23, 1956 [Oct. 24, 1955], No. 32348/56. Class 97(1). In a stereo viewer in which stereo transparencies carried in a mount with their centres about 2¢ inches apart are projected on to a screen for viewing without the use of special glasses by the viewer, to allow the images to the viewer over a wider angle, the screen is so formed as to spread the light passing therethrough in such a manner that each point of light is diverged into a solid cone of light having a half angle of about 3 degrees at which angle the intensity is less than 50% of maximum, and a positive field lens is placed near the screen having a focal length equal to about ¢ to 2/3 times the distance of the field lens from.the two projection objectives. The screen may be a modified form of the cone screen described in Specification 706,741 or may be found by guiding one surface of a glass plate and coating the ground surface with a transparent layer of refractive index different from that of the sheet by between 0À02 and 0À2. As shown the viewer comprises a housing 54 for a lamp illuminating the transparencies 53 and projection lenses 56 forming superposed images on a cone screen 58 by way of mirror 57. A positive Fresnd lens 60 is placed close to the screen. The lens 60 may be a simple biconvex lens suitably placed screens may be provided to assist the corect location of the eyes.
Patent GB-775455-A (GB)
Title: Improvements in or relating to turbines and nozzle mechanism therefor
IPC: F01D9/04
Filed: 1954-05-20
Abstract: 775,455. Gas turbines. GARRETT CORPORATION. May 20, 1954 [June 8, 1953], No. 32375/54. Divided out of 775,454. Drawings to Specification. Class 110 (3). The invention is concerned with the mounting of a variable area nozzle ring and shroud of a radial inward flow turbine. The subject-matter is also disclosed in Specification 775,454.
Patent GB-1314835-A (GB)
Title: Method of constriction by means of prefabricated panels
IPC: E04B2/88
Filed: 1970-07-03
Abstract: 1314835 Panelled wall SOC ITALIANA RESINE SpA 3 July 1970 [4 July 1969] 32472/70 Heading E1W Panels 1 formed of cement and plastics ballast jointed with adhesive/cement 3 as described in the Specification 1307768 form an external wall. Each course of storey high panels 1 is aligned by engagement of the upstanding flanges 8 of elongate angle bars 4, 5 adjacent to each other along the lower edge of the panels in a continuous groove in the panels' lower edge. The inner bar 4 of metal and the outer bar 5 of P.V.C. are supported on angle brackets 10 bolted or welded to the building structure (not shown). The plastics angle bar 5 may have further longitudinal flanges which act as a cover strip over the external joint and resiliently grip the outwardly projecting flange of the bracket 10. The plastics bar 5 may be adhesively secured to the courses above and below by the filling of the cavities 13, 6 and 7. The panels may contain metal reinforcement.