baber/WOPTO huggingface dataset:
Patent GB-1117326-A (GB)
Title: Plastic contact lenses and methods for their production
Inventor: HAMM HOMER ALEXANDER
IPC: G02C7/04
Filed: 1965-08-04
Abstract: Plastic for contact lenses having a germicide incorporated therein is prepared by partially polymerizing a monomer (e.g. methyl methacrylate) using an accelerator (e.g. benzoyl peroxide or azo-di-isobutyronitrile), adding the germicide, and optionally a cross-linking agent (e.g. ethylene glycol di-methacrylate) and more accelerator, and heating to complete the polymerization. The specified germicide composition is a mixture of phenyl mercuric borate, 2-ethyl-hexanol, and di-iso-butyl-phenoxy-ethoxy - ethyl - dimethyl - benzyl ammonium chloride, optionally with dihydroxy-hexachloro-diphenylmethane.
Patent GB-176093-A (GB)
Title: Improvements in coin box mechanism for coin-in-the-slot machines
IPC: G07F9/06
Filed: 1920-11-26
Abstract: 176,093. Villiers, P. G. T. de, and Jenkins, A. Rogers-. Nov. 26, 1920. Hiring telephones; moneyboxes or receivers.-In coinfreed apparatus, particularly a telephone pay station, withdrawal of the coin-collecting box actuates an electrical signal at a central office. The box may also be temporarily displaced for repair of the telephone or other mechanism without giving the mechanic access to its contents. As shown applied to a telephone pay station, the coin-box 3 is removably carried in a metallic housing 4 and has an insulated pin 21 which holds a spring 18 away from a contact 20 on the housing, the spring 18 being wired into the signal circuit which includes a battery, glow lamp, call and exchange telephones and coinactuated signalling reeds 14 electrically connected to the base 1. The spring 18 is insulated from the base 1 by an insulating block 19. On withdrawal of the base 3, the contacts 18, 20 come together and complete the circuit. The housing is hinged at 23 to the base 1 and is held in position by a screw, so that the coin-box 3 and housing may be swung to the position shown in dotted lines for repair of the mechanism without giving access to the contents of the coin-box.
Patent GB-1048155-A (GB)
Title: Extruding die jaw adjustment
IPC: B29C48/08
Filed: 1964-08-17
Abstract: 1,048,155. Extrusion dies. FRANK W. EGAN & CO. Aug. 17, 1964 [May 1, 1964], No. 33463/64. Headings B5A and B5B. A film extrusion apparatus includes a die body having an elongated opening, first and second jaws one at each side of the opening having faces forming an extrusion slot between them, the first jaw being movable as a unit by operation of a single operating member towards or away from the second jaw, the second jaw being movable locally towards or away from the first jaw. The apparatus may be used for, e.g. extrusion casting of films, extrusion coating or curtain coating. In one embodiment (Figs. 1 and 2, not shown), a curtain coater head comprises a body 1 having central cavity 2 heater wells 3, and two movable jaws 10 and 14 forming a slot-like orifice 20. A series of individually adjustable nuts 8, spaced longitudinally along the die, and engaging with studs 9, permit jaw 10 to be moved toward or away from jaw 14 to correct local irregularities' of film thickness. A clearance is provided between bolt 12 and the surrounding jaw 10 to permit movement of the jaw. A guide strip 15 fastened to the die body by screws 16 provides guide surfaces 17 and 18 which extend the full length of the die body, and which, together with groove 24a in the second movable jaw 14, provide bearings in which projections 23, 24 of an adjusting bar 19 slide (Fig. 4, not shown). The adjusting bar, which is tapered, is held in position between guide strip 15 and jaw 14 by keys 21, 22. Projection 23 on adjusting bar 19 is parallel to the edge of jaw 14, while projection 24, key 21 and side wall of groove 24a are inclined to the edge of the jaw. Adjustment screw 25 (Fig. 5, not shown), threaded into an opening 25a in bar 19, extends out through the end plate 26. Shoulder 27 and collar 28 prevent axial movement of the screw relative to the end plate and die body. In operation, a turn of screw 25 causes a longitudinal movement of the tapered adjusting bar 19 along the grooves in jaw 14 and guide strip 15, causing transverse movement of jaw 14, as a unit, towards or away from jaw 10. The thickness of the extruded film may thus be changed, without disturbing localized adjustments made to jaw 10 by selectively turning one or more of nuts 8.
Patent GB-1165274-A (GB)
Title: Cold Separation of Binary Gas Mixtures
Inventor: CIMLER EMIL
IPC: F25J3/04
Filed: 1967-07-20
Abstract: 1,165,274. Cold separation of air. HYDROCARBON RESEARCH, Inc. 20 July, 1967, No. 33495/67. Heading F4P. In a two-stage binary gas mixture, e.g. air, separation process wherein oxygen-rich liquid is withdrawn at 40, 40b from the base of a high pressure column 30 and expanded in a valve 50 into a low pressure column 54 from which waste nitrogen and product liquid oxygen are withdrawn at 66, 68, crude high pressure gaseous nitrogen is withdrawn from column 30 through a line 32, is expanded at 34 and the so-cooled nitrogen is passed in heat exchange at 36 with a portion of the oxygenrich liquid bottoms from column 30. Exchanger 36 may serve to vaporize said liquid bottoms which pass through open valves 73, 71 back to column 30; valves 72, 74 being closed. Alternatively exchanger 36 may subcool the liquid bottoms which pass through open valves 72, 74 to a line 46a leading to expansion valve 50; valves 71, 73 being closed. The temperature of the nitrogen feed to the expander 34 is adjusted by a flow-dividing valve 75 and by valves 76, 77 which determine the nitrogen flow through an exchanger 42a cooled by waste nitrogen in line 66. In operation feed air from a compressor 14 is cooled in reversible heat exchangers 22, 24 in counterflow with product gaseous nitrogen discharged by expander 34 through lines 38, 38a and in counterflow with product gaseous oxygen withdrawn from column 54 through lines 62, 62a and the so-cooled feed air is delivered through a line 28 to column 30. That portion of oxygen-rich bottoms from column 30 not passed through exchangers 36 is cooled in parallel exchangers 42, 44 and is passed through a line 46, acetylene absorbers 48, expansion valve 50 and a heat exchanger 52 where it sub-cools liquid nitrogen prior to expansion of the latter in a valve 60.
Patent GB-892449-A (GB)
Title: Improvements relating to stapling machines
Inventor: GLENNON MAURICE CHARLES
IPC: B25C5/02
Filed: 1959-10-02
Abstract: 892,449. Stapling machines. OFREX Ltd. Sept. 28, 1960 [Oct. 2, 1959], No. 33507/59. Class 89(3) A stapling machine comprises a staple magazine 1, a cap 2, an anvil support 3 which is pivoted to the cap and magazine at 4, and an operating lever 5 straddling support 3 and pivoted to the cap at 7. The magazine is of inverted channel section having inturned shoulders 25 at the end adjacent the driving blade 8, for supporting the staple legs, and the staples 14 are loaded from the underneath side, and pressed towards blade 8 by a spring urged block 26 carried by a rod 28 pivoted at 4. To load the magazine, support 3 is pressed towards blade 8 against spring 18 to disengage a projection 33 on the support from lever 5, and the lever is swung to the left about pivot 7, thus allowing support 3 to be swung to the right about pivot 4, and the magazine is loaded. Members 3, 5, are swung back again so that depression of lever 5 will produce a camming section on support 3 at 11, and anvil 13 engages the lower side of the magazine and moves it upwardly with respect to blade 8, thus severing and clinching a staple. Anvil 13 is releasably secured to a spring 15 to allow reversal of the anvil for clinching staples so that their legs are towards or away from each other. Specification 756,534 is referred to.
Patent GB-732765-A (GB)
Title: Improvements in or relating to bangles
IPC: A44C5/00
Filed: 1953-12-02
Abstract: 732,765. Bangles. KLEEMAN, F. Dec. 2, 1953, No. 33515/53. Class 43. A bangle comprises a pair of oppositely handed interlaced flattened helices 11, 12 of wire, for example of aluminium anodized blue and pink, and a strip element 13 of stiff resilient material such as steel, extending within their convolutions with its end portions overlapping and having one end portion 13a bent to form a "set" or slight bend out of its normal arcuate shape so as frictionally to engage the other end portion. The two helices of equal radii are interlinked to have their generatrices offset by the thickness of the wire to impart, when different coloured wires are used, different appearances to opposite ends of the bangle.
Patent GB-1199752-A (GB)
Title: Apparatus for Yarn Treatment
IPC: D02G1/18
Filed: 1967-07-20
Abstract: 1,199,752. Stretching yarn. M. R. GASTELLS. 20 July, 1967 [21 July, 1966[, No. 33516/67. Headings D1L; D1J; D1W. Apparatus for stretching yarn to impart a high shrinkage potential thereto comprises a bath, an expansible stretcher frame on which the yarn is wound and which can be located on guides in the bath, and drive means for expanding the frame in the bath. The frame comprises a fixed arm, and a displaceable arm mounted on two rotatable screw threaded spindles. The ends of the arms are provided with guide pins. The bath contains water and has vertical guides for the guide pins and a gear-wheel arrangement which is pivotally disposed about the top of the bath and can be lowered so that the polygonal ends of the spindles of the frames are engaged in apertures in the gear wheels and on rotation of the gear wheels the arms are displaced to stretch the yarn. The bath is heated by a steam coil. The yarn may ibe composed of animal fibres and may be stretched by up to 50%. After drying the fibres miay be blended with other fibres to obtain bulky or fancy effects. The yarn is wound on the frame using a winding machine with the frame being held and rotated by grooved guides. A yarn guide. mounted an a pivoted lever is used to traverse the yarn onto the frame.
Patent GB-758622-A (GB)
Title: Improvements in or relating to method for producing fluid, high-solids latex
IPC: C08C1/065
Filed: 1954-11-19
Abstract: A method of producing a synthetic latex capable of being concentrated to a high-solids concentration while retaining good fluidity, comprises producing a small particle size latex by polymerizing a latex in accordance with a low-solids recipe, freezing this latex at a temperature below its freezing point, and then thawing the frozen latex, so increasing the average particle size of the latex. Butadienestyrene latex is the specified synthetic latex.  The latex may be frozen at low solids concentration, thawed and then concentrated, and the concentrated latex subjected to a freezing and thawing cycle.  The pH of the latex may be reduced to a point close to but not quite sufficient to cause coagulation, prior to freezing.
Patent GB-1502122-A (GB)
Title: Semiconductor devices
IPC: H01L27/06
Filed: 1975-08-12
Abstract: 1502122 Semi-conductor devices RCA CORPORATION 12 Aug 1975 [19 Aug 1974] 33548/75 Heading H1K A semi-conductor device, particularly a high power device in integrated form, comprising two transistors 14, 18 with their collector regions 26, 28 and 60, 62 respectively, electrically connected together, is characterized in that the transistor 18 has its common emitter current gain less than that of the conventional transistor by at least an order of magnitude, and in particular lying between 0À05 and 0À25, so that the transistor 18 functions as a diode 16 having its base and emitter regions 58, 56 and 54 respectively, virtually isolated from the collector electrode 40 of the transistor 14, the device being further characterized in that each transistor is provided with a first base region partly surrounding its emitter region, and a common second base region 58 of the same conductivity type as the first base region but of lower conductivity type and laterally surrounding the respective first base region. The low value of the common emitter current gain is obtained by (1) providing a shallow emitter region 54 of, e.g. depth 0À1 mil. as compared to 0À7 mil. depth of the emitter region 20, Fig. 1, or (2) by providing a base (86), Fig. 3 (not shown), of a transistor (88) with a deeper region than that of the P+ base (22<SP>1</SP>) of a transistor 141, the depths of the emitter regions (20<SP>1</SP>, 84<SP>1</SP>) being the same in both the transistors. The impurity distribution profiles in the embodiment of Fig. 1 in the base and collector regions of both the transistors are substantially identical along vertical lines that do not intersect the emitter regions, whereas in the embodiment of Fig. 3, impurity distribution profiles in the emitter and collector regions are substantially identical.
Patent GB-922485-A (GB)
Title: Improvements in the wet-spinning of fibre-forming liquids
Inventor: FOLLOWELL ROY FREDERICK
IPC: D01D5/06
Filed: 1960-09-30
Abstract: <PICT:0922485/IV(a)/1> Fibre-forming liquids are wet-spun by extruding the liquid, through a spinning jet face having an imperforate area at or adjacent to its centre, into a coagulant liquid, and simultaneously directing a separate stream of the same or different coagulant liquid towards the central imperforate area. The coagulant liquid into which the fibre-forming liquid is extruded may be a solution, e.g. an aqueous solution of an inorganic salt, and the separate stream may be a weaker solution of the same compound or may be the solvent component only of the solution.  The separate stream of coagulant may be fed perpendicularly to the central imperforate area of the jet face, e.g. through a pipe ending in a bell-shaped mouth which pipe extends through the bundle of freshly-spun filaments with the mouth directly over the central imperforate area of the jet face. Alternatively, as shown in the drawing, the separate supply of a coagulant liquid may be fed via pipe 5, annular conduit 4 and spouts 6 along the radial imperforate areas of the face of the jet 1 between the radial perforated areas of the jet face (shown in the drawing as shaded areas) to the imperforate area in the centre of the jet face.  In the example, a 12,5% solution of polyacrylonitrile in a 51% aqueous sodium thiocyanate solution is extruded into an 11% aqueous sodium thiocyanate solution through a spinning jet of the type described above and water or a 2% aqueous sodium thiocyanate solution is fed to the central area of the jet face through the spouts 6.  The invention makes possible higher spinning speeds and improved fibre quality.
Patent GB-392463-A (GB)
Title: Improvements in and relating to the feeding of a rectifier from a twelve-phase system
IPC: H02M7/06
Filed: 1932-11-29
Abstract: 392,463. Rectifying alternating current; transformers. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Nov. 29, 1932, No. 33756. Convention date, Nov. 30, 1931. [Class 38 (ii).] An arrangement for feeding a twelve phase rectifier comprises a transformer having twelve secondary phases arranged in three symmetrical four-phase groups, the star points of which are interconnected by a three-phase zig-zag connected choke S forming the neutral point of the system and the negative terminal of the D.C. system. Each of the four-phase groups (1, 4, 7, 10) (2, 5, 8, 11) and (3, 6, 9, 12) comprises a centre tapped winding associated with one primary phase and connected at each end to a pair of windings associated one with each of the other primary phases and forming the output connections of the system.
Patent GB-819727-A (GB)
Title: Improvements in or relating to aircraft warning system
IPC: G08B5/38
Filed: 1955-11-24
Abstract: 819,727. Signal lamps for aircraft. ATKINS, H. W. Nov. 24, 1955 [Aug. 2, 1955], No. 33764/55. Class 75(4) [Also in Group XXXVIII] Apparatus for use on an aircraft for warning an observer on another aircraft of the degree of probability of collision between the two aircraft comprises a stream-lined plastic bubble 21 situated at the top of the tail 19 of an aircraft and enclosing three lamps 25, 26 and 27 flashing at different predetermined rates (see Group XXXVIII). Baffles 23 and 24 are arranged as shown to limit the forward light from the lamp 25 to a sector of 120 degrees, the rearward light from lamp 27 to a sector of 120 degrees and light from lamp 26 to left and right sectors of 60 degrees each.
Patent GB-1360278-A (GB)
Title: Automatic telephone answering apparatus
IPC: H04M1/65
Filed: 1971-07-19
Abstract: 1360278 Substation equipment PIONEER ELECTRONIC CORP 19 July 1971 [18 July 1970] 33791/71 Heading H4K A telephone answering machine is provided with a timing circuit which causes the machine to switch into its message recording mode a predetermined short time after the pre-recorded outgoing message has ceased. The machine shown includes an outgoing message tape T1 and a message recording tape T2 which are switched on to the telephone line 11 by relays Y1, Y2, Y3, Y4. During replay of the prerecorded message through head 151 and amplifier 152 on to the telephone line a timing circuit 20 is also connected which causes relay Y3 to operate after the tape signal has disappeared for a pre-determined time, e.g. 3 seconds. Operation of relay Y3 causes relay Y2 to operate and switch the telephone line over through contacts y22 to the message recording section 17. By operation of the switches SW31, SW32 the pre-recorded message on tape T1 can be monitored by circuit 19 which includes a timing circuit 191 which causes oscillator 192 to operate and give an audible warning after the tape signal has disappeared. The operator is then given an opportunity of recording a further message if desired. To speed up the changeover to the recording state an additional pair of contacts 161 may be bridged by conductive foil on the tape to operate relay Y3 before the main stop contacts 16 are bridged. Tape T1 will continue running until contacts 16 are bridged so that it is stopped in the correct standby position.
Patent GB-521701-A (GB)
Title: Improvements in and relating to the manufacture of steel by the bessemer process
IPC: C21C5/28
Filed: 1938-11-21
Abstract: 521,701. Steel. BRASSERT, H. A., and BRASSERT & CO., Ltd., H. A. Nov. 21, 1938, No. 33808. [Class 72] In the production of steel by the acid or basic Bessemer process in which the blow is stopped, the slag removed, a further quantity of dephosphorizing slag materials added and the blow finished, molten pig iron of high carbon content is added to the converter during the interruption of the blow. The pig iron may be poured through the first slag before it is removed or may be added after the removal of that slag or may be poured through the second slag before the second blow. Specification 492,740 is referred to.
Patent GB-725930-A (GB)
Title: Improvements relating to burners for liquid fuel
IPC: F23D3/00
Filed: 1953-12-04
Abstract: 725,930. Wick burners. PUIGRREDON, J. A. Dec. 4, 1953, No. 33844/53. Class 75 (1). In a liquid fuel burner in which a cylindrical wick is housed between inner and outer concentric cylindrical walls 3, 2 of a cylindrical body 1 the wick is mounted in a holder which has screw threads engaging complementary threads 4 on the body 1 whereby rotation of the holder relatively to the body 1 raises or lowers the wick. The holder is rotated by a gear 18 engaging corrugations or projections 10 formed on the outer wall of the holder. The gear 18 is driven by a knob 23 through a gear 20. A screwed ring 25 mounted on a fixed screwed sleeve 24 is provided with a radial arm 26 engaged between guide pins 27, 27a on the knob 23. The arm 26 engages either the inner surface of the knob 23 or a fixed plate 28 to limit rotation of the knob 23. The body 1 has an inwardly directed flange defining a large central passage 8 and having a number of circumferential perforations 7 for the passage of combustion air. The wick is reinforced with a perforated metal strip 14.and is covered by a U-shaped metal cover 29.
Patent GB-521800-A (GB)
Title: Process for the manufacture of wool dyestuffs of the anthraquinone series
IPC: C09B1/34
Filed: 1938-11-23
Abstract: 521,800. Dyes. I. G. FARBENINDUSTRIE AKT.-GES. Nov. 23, 1938, No. 34114. Convention date, Nov..24, 1937. [Class 2 (iii)] New dyes are made by reacting a 1-amino-4- bromanthraquinone-2-sulphonic acid with 1 mol. of a phenylene diamino derivative one hydrogen atom of one amino group of which is replaced by a acyl radicle of an aliphatic or cycloaliphatic acid of at least six carbon atoms, or by reacting a 1-amino-2.4-dibromo-anthraquinone with such a phenylene-diamino derivative followed by reaction with alkali sulphite. The reaction may be carried out in water or an organic hydroxylic solvent such as ethyl alcohol or glycol or a mixture of both and in presence of an acid-binding agent and a copper salt, or in pyridine in the case of the 1-amino- 2.4-dibromoanthraquinone. In examples, (1) 1 - amino - 4 - bromanthraquinone - 2 - sulphonic acid is reacted with (a) 1-amino-4-hexahydrobenzoylamino-benzene (blue shades on wool), (b) 1 - amino - 4 - undecanoylaminobenzene (greenish-blue shades) ; (2) 1-amino-2.4-dibromoanthraquinone is reacted with 1-amino- 4-isoheptoylaminobenzene, followed by reaction of the product with sodium sulphite in phenol (blue shades). 1 - Amino - 4 - hexahydrobenzoylaminobenzene is made by condensing 4-nitraniline with hexahydrobenzoyl chloride followed by reduction. 1 - Amino - 4 - undecanoylaminobenzene is made by condensing 4-nitraniline with undecylenic acid chloride with subsequent reduction. 1 - Amino - 4 - isoheptoylaminobenzene is made by reacting p-nitraniline with isoheptoyl chloride followed by reduction.
Patent GB-344478-A (GB)
Title: Improvements in or relating to screw propellers
IPC: B64C11/00
Filed: 1929-11-08
Abstract: 344,478. Screw propellers. GREEN, C. J., Upper Parklands, Kabete Road, Nairobi, Kenya. Nov. 8, 1929, No. 34167. [Class 114.] A screw propeller is formed with a number of fixed blades of aerofoil section disposed radially within two or more concentric annular frames connected to the hub by arms or stays, the leading edges of the blades coinciding with the leading edges of the rings whilst the trailing edges terminate short of the trailing edges of the rings. Aerofoil sectioned blades d are fixed between an inner ring a and an outer ring b, and when the blades are formed in two parts d<1>, d<2> there is an intermediate ring c. The leading edges of the vanes d coincide with the leading edges f of the rings a, b, c but the trailing edges g end short of the trailing edges h. The rings are stayed to the boss k by leading and centre stays j, j<1> these being screwed into the boss at one end and secured by lock-nuts l to the rings. Secondary stays m may be provided between the rings.
Patent GB-745192-A (GB)
Title: An improved firework
IPC: F42B4/00
Filed: 1953-12-08
Abstract: 745,192. Pyrotechnic devices. ROSE P. Oct. 25. 1954 [Dec. 8, 1953], No. 34169/53. Class 9(2) Pyrotechnic device comprises a tube 10 closed at the base by a conical plug 12 and adapted to contain an explosive charge, above which is inserted a fuze plug 13 filled with gunpowder and sealed with a priming of meal-like or dough - like gunpowder. The tube 10 is made by rolling up a rectangular sheet of paper and the plug 12 is secured by adhesive. To make the fuze plug, a rectangular sheet of paper with a corner cut away is rolled to form a tube with a slightly tapered outer surface and having a touch paper 16 at the closed end, the paper 16 being impregnated with saltpetre. After filling, adhesive is applied to the outer surface of the plug, which is then inserted in the tube 10. A quick match may be placed between the fuze plug and the main charge in the tube 10. The inner surface of the tube 10 may be cylindrical or conical, when conical the fuze plug may be cylindrical. A washer may be glued to the plug 13 to abut against the end of the tube 10.