baber/WOPTO huggingface dataset:
Patent GB-984446-A (GB)
Title: Improvements relating to semicrystalline glass and to the coating of metal therewith
IPC: C03C10/00
Filed: 1961-07-04
Abstract: A devitrified glass is formed by making a crystallizable glass, producing a frit from the amorphous mass formed by melting the glass, reducing the frit to a powder, heating the powder to a temperature sufficient to cause the particles of the powder to coalesce and maintaining the glass at a crystallizing temperature to partially crystallize it.  Before maintaining the coalesced powder at a crystallizing temperature, the powder may be maintained at a nucleation temperature to cause the formation of crystal nuclei therein and subsequently maintained at a temperature sufficient to cause the particles in the powder to coalesce but insufficient to destroy the nuclei therein.  The glass is particularly for use in coating metal surfaces, the coating being with the powder form so that an even coating is produced on heating to devitrification. Particular glasses are chosen to have a coefficient of expansion to give residual compressive stress of 8,000-30,000 p.s.i. in the coating surfaces.  A number of examples are given comprising in weight percentages, SiO2 40-70; alkali metal oxides 10-25 and one or more of TiO2, Al2O3, CeO2, MnO2, ZrO2, B2O3, Fe2O3, Sb2O3, Cr2O3, CaO, ZnO and SrO.  The crystal phases of these glasses may be b -spodumene, b -eucryptite, lithium titanium silicate, rutile, brookite, lithium disilicate, sphene, crystabolite, Mg2TiO4, Mg2TiO3 or Mg2TiO5.  The glass coating may be applied over the usual ground enamel, a composition for which is given.  Specification 829,447 is referred to.
Patent GB-532744-A (GB)
Title: Improvements in and relating to electric braking control systems for electric motors
IPC: H02P3/20
Filed: 1939-08-22
Abstract: 532,744. Control of motors. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 22, 1939, No. 24182. Convention date, Aug. 22, 1938. [Class 38 (iii)] Non-regenerative braking. A switch comprising a rotor A and a stator St operating change-over contacts K1, K2, and effective to disconnect a motor M when it has been braked to a low speed by reversing its connections to the supply, has its rotor driven in accordance with but in excess of the speed of the motor. The rotor A may be coupled to the motor M through change speed gearing or driven by an auxiliary slip ring machine H interconnected on primary and secondary sides with the main motor in which case the machine H has fewer poles than the main motor. Where the main motor is supplied from a D.C. source the machine H is connected to a further slip-ring machine coupled with the main D.C. motor.
Patent GB-462174-A (GB)
Title: Improvements in electric insulators
IPC: H01B17/14
Filed: 1935-08-30
Abstract: 462,174. Insulators. TAYLOR, TUNNICLIFF, & CO., Ltd., and SPENCER, E. D. Aug. 30, 1935, No. 24210. [Class 36] A high-tension supporting insulator comprises a plurality of separately formed units such as 1-3, superimposed one upon the other and cemented together to form a selfcontained composite body, the top and bottom units having cylindrical outer ends to which external metal attachment fittings 4, 5 are cemented. The units are of inverted cup form and the upper end of each, excepting the top unit, is formed with a shoulder 15 and a conical portion 13, which rests within the flared lower end 7 of the adjacent upper unit. The units are secured together by cement 18 interposed between the conical and flared surfaces of the adjacent units.
Patent GB-718849-A (GB)
Title: Substituted aralkyl alkylene diamino di-acetic acids and salts thereof
IPC: C11D1/00
Filed: 1952-09-26
Abstract: The invention comprises chelating agents of the general formula <FORM:0718849/IV (b)/1> wherein R is an alkylene group containing 1 to 5 carbon atoms and which may contain an interrupting ether-oxygen atom; Alkylene is ethylene, trimethylene or propylene; X is hydrogen, hydroxyl, alkyl, alkoxyl or halogen, one to three of the X groups of each phenyl nucleus being halogen; and M is hydrogen, alkali metal, ammonium or substituted ammonium.  In examples: (1) 2,6 - dichloro - 4 - nitrobenzyl chloride is condensed with the sodium salt of N,N1-ethylenediamine diacetic acid to give N,N1 - bis - (2,4 - dichloro - 4 - nitrobenzyl) - ethylenediamine N,N1-diacetic acid, the nitro groups of which may then be converted to amino, halogen or phenolic groups in known manner; (2) the nitro compound of (1) is reduced to amino, diazotized and subjected to the Sandmeyer reaction to substitute a chlorine atom, after which the copper is removed from the copper chelate formed by precipitation with hydrogen sulphide; (3) the same product as in (2) is obtained by condensing 2,4,6-trichlorobenzyl chloride with ethylenediamine-N,N1-diacetic acid; (4) p-chlorophenylethyl chloride is condensed with disodium ethylenediamine diacetate to give N,N1-bis-(p-chlorophenylethyl) - ethylenediamine - N,N1 - diacetic acid; (5) 2-hydroxy-3,6 (or 3,5)-dichlorobenzyl chloride is condensed with ethylenediamine and the product carboxymethylated with sodium cyanide and formaldehyde to give N,N1-bis-(2-hydroxy-3,6 (or 3,5)-dichlorobenzyl)-ethylenediamine-N,N1-diacetic acid; and (6) N,N1-bis-(p - chlorophenyl - n - pentyl) - ethylenediamine-N,N1-diacetic acid is prepared by condensing p - chlorophenyl - n - pentylamine with ethylenediamine and carboxymethylating as in (5).
Patent GB-1024582-A (GB)
Title: A method of manufacturing a synthetic resin moulding reinforced with fibrous material
IPC: B29C70/54
Filed: 1961-07-05
Abstract: 1,024,582. Laminated: reinforced plastics. W. RODGERS. July 4, 1962 [July 5, 1961],. No. 24381/61. Headings B5A and B5N. In a method of manufacturing a synthetic resin moulding reinforced' with fibrous material at least one layer 14 of reinforcing fibrous material is placed in a mould 10, 11 with a layer of spacer material 13 having openings, channels or the like over its surface which lies against the layer 14 to provide less resistance to the flow of, and facilitate the distribution of, a hot or cold-setting liquid synthetic resin such as a polyester or epoxy resin, introduced into the mould to impregnate the material 13 and layer or layers 14, the resin being allowed to harden sufficiently before removing the moulding from the mould. The resin may be introduced by gravity, injection, or by the use of suction, the mould 10, 11 having inlets 15 for the resin and outlets 16 for the air. The reinforcing fibrous material used is glass fibre chopped strand mat. The intermediate layer 13 may be a network of extruded thermoplastic filaments, knitted string, wire or fabrics; stiffened textile fabrics impregnated with a resin; stiff corrugated resin-coated cloth, or paper. A patterned material may be placed against the mould to produce a decoration finish. The method also includes the use of inserts in the moulding to lend extra strength to the finished article, which inserts may also be used as layer 13. Materials suggested are balsawood or foamed concrete having grooved surfaces; blocks or sheets of expanded synthetic plastic material, e.g. expanded polystyrene or polyvinyl chloride or polyurethane. Also aluminium sheet with grooved surfaces may be used. The mould walls may be channelled to assist distribution of the resin. Further examples of manners of carrying out the methods, and different mould constructions are given with reference to Figs. 2 to 5 (not shown).
Patent GB-449125-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J19/42
Filed: 1935-09-02
Abstract: 449,125. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 2, 1935, No. 24485. Convention date, Sept. 1, 1934. [Class 39 (i)] An electrode system is secured to but insulated from metal header members which are secured to and close the ends of a metal cylinder serving as the envelope. In one form, the posts of a control grid 5 and a screen grid 6 are mounted in mica discs 22, and the support 16 of an anode 7 in mica discs 23, one of which fits snugly in a metal cap 24 screening the control grid from the outer face of the anode. The cap 24 is secured to the posts 20 which connect the structure to cylindrical headers 2, 3. The mica discs 22, 23 are riveted to metal bracing bars 26 provided with clearance slots for the electrode supports and are welded to the posts 20. The cathode is connected to the lowe bar 26. A cylindrical metal envelope into which the sides of the headers 2, 3 fit snugly, is slipped over and the headers are line- or stitch-welded to it. The tube is evacuated through a metal tube 33. Specification 448,746, [Group XI], is referred to.
Patent GB-202857-A (GB)
Title: Improvements in and relating to bags
IPC: B65D33/02
Filed: 1922-09-11
Abstract: 202,857. Harbord, E. J. Sept. 11, 1922. Paper and like bags, appliances for use with.-A folding stretcher frame for employment in conjunction with a collapsable or flexible paper, fabric, or like bag, to keep it expanded, comprises two opposed foldable elements such as the left and right-hand members 1 shown in Fig. 1, and two opposed rigid members or elements 3 arranged at right angles to the former pair. In the form shown in Fig. 4, the foldable elements are in the form of hinged bars 1* and the bottom of the frame is also provided with a foldable element 6.
Patent GB-1341998-A (GB)
Title: Process and device for the preparation of a plastics fibre fleece
IPC: D04H3/02
Filed: 1971-04-19
Abstract: 1341998 Forming a continuous filament mat STAMICARBON NV 19 April 1971 [26 March 1970] 24725/71 Heading DIN A process for the preparation of a plastics fibre fleece comprises moving filaments downwardly towards a conveying plane 8 and prior to their laying down on the plane 8, zig zagg ing them by means of the alternate action of upwardly inclined air currents which act in different directions and which hit the filaments in a free space.  In the method described, polyamide filaments 2, Fig. I, leaving a spinning nozzle 1 at 260C are cooled to 145C by cool air from a blower 3. The filaments then pass over pins 4, which may be heated, into a drawing shaft 5 where they are drawn by air fed in via devices 6. The bottom of the shaft 5 leads into a housing 7 which lies on the conveyor plane 8 and has air injection apertures 9, 10 and draw-off apertures 11, 12. The apertures 9, 12 and 10, 11 are used together alternately to provide alternating upwardly inclined air flows across the housing which cause the filaments to be zig-zagged as they fall onto the plane 8. Several housings 7 located above the plane 8 are provided which are oriented at different angles so that the filaments zig-zagged thereby assume different positions on the plane 8, see Fig. 3.  A suction device 13 is provided beneath the plane 8 to maintain the filaments in position thereon. The filaments are stuck together by known techniques. All the apertures 9-12 may be included in a single piping system which includes a fan and a pair of change-over valves to produce the alternating air flows.
Patent GB-1064458-A (GB)
Title: Improvements relating to methods for anchoring wires
IPC: E04C5/12
Filed: 1964-06-16
Abstract: 1,064,458. Anchoring prestressing wires; clamps. R. MACCHI. June 16, 1964 [June 17, 1963], No. 24812/64. Headings E1W and E2B. Prestressing wires each have a flattened portion 13a anchored in holes 12 formed in an internally and externally threadad anchor block 11. Each hole has stepped walls 12a 12d, and a bush 14 of, e.g. stainless steel is arranged on each wire so that the flattened portion is stressed from its root outwards, the bush having end slots 14c which allows it to be deformed more easily as it is forced against the walls of the hole.
Patent GB-206483-A (GB)
Title: Improvements in chimneys with ejector apparatus for inducing draught
IPC: F23L17/16
Filed: 1923-10-05
Abstract: 206,483. GrandiÞre, B. E. Oct. 31, 1922, [Convention date]. Aspirating-apparatus, ejector; regulating or controlling action. -In steam, air, and gas ejectors, having inducing-fluid of a like class, the inducing- fluid is emitted intermittently from the inducing-fluid nozzle. Fig. 3 shows a disc valve 2 mounted in the mouth of the nczzle 1 upon a spindle 3 that passes through it diametrically, is carried in bearings 4, and is rotated by a belt running upon a pulley 5. It is stated that the inducing-fluid escapes in lens-shaped volumes 6, between which the induced-fluid becomes trapped and is carried away. In the transverse section of a modified arrangement, Fig. 5, the valve is shown dished at 2<a>, 2<b>, so that the inducing-fluid will rotate it.
Patent GB-742172-A (GB)
Title: Improvements in barrier layer cells
Inventor: BILLIG ERNST
IPC: H01L21/288
Filed: 1951-10-24
Abstract: 742,172. Semiconductor devices. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd. Oct. 23, 1952 [Oct. 24, 1951], No. 24880/51. Class 37. A PN junction is produced by heating a clearly defined portion of a block of semiconductor material of one conductivity type, while maintaining the rest of the block substantially at room temperature. The conversion of one type of conductivity to the other may be effected merely by heating and subsequent quenching, or by heating in the presence of a donor or acceptor impurity in liquid or gas form, so that diffusion takes place up to the " cold " boundary. The remaining portion of the block may be held cool by embedding in a sheath or bath maintained at a constant temperature. P-type germanium may constitute the semiconductor, and nitrogen the donor impurity. The Provisional Specification describes other methods of producing PN junctions, viz. (1) significant impurity is diffused into part of a semiconductor body by passing a current pulse in the reverse direction between the body and metal electrode containing the impurity; (2) a thin film of semiconductor of one conductivity type may be deposited by evaporation, sputtering, or electrolytic or chemical deposition on to a body of the opposite conductivity type; an insulating layer may also be provided between the N and P portions; (3) N and P portions of the same or different semiconductor materials are prepared independently and fused together by passing an electric current through the junction; the component portions are preferably single with their axes coincident. A plurality of PN junctions in series may be provided. Silicon, copper oxide, and cadmium sulphide are also specified as suitable semiconductors. Reference is made to photo-electric, thermo-electric, and transistor properties.
Patent GB-1306885-A (GB)
Title: Harbour enclosing wall
IPC: E02B3/06
Filed: 1971-04-19
Abstract: 1306885 Breakwaters ALLENDORFER FABRIK FUER STAHLVERABEITUNG ING HERBERT PANNE KG 19 April 1971 [21 March 1970] 24905/71 Heading E1H A harbour enclosing wall is formed from spaced vertical, A-shaped or inverted V-shaped steel or concrete posts 1, 1', inclined galvanised steel gratings 2 which act as wave breaking members being mounted between the spaced posts. When vertical posts are used (Figs. 3 and 4 not shown) the gratings are mounted on triangular lattice work or sheet metal brackets carried by the posts and secondary horizontal lattice, or perforated plate gratings (3) are mounted below the inclined gratings. A gangway is provided on top of the wall.
Patent GB-715447-A (GB)
Title: Improvements in or relating to electronic pick-up tubes
IPC: H01J29/39
Filed: 1952-10-06
Abstract: 715,447. Television pick-up tubes. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Oct. 6, 1952 [Oct. 5, 1951], No. 24958/52. Class 39(1) The target electrode of a pick-up tube comprises a thin photo-conductive layer provided on the side facing a high velocity scanning beam with a mosaic layer formed of conducting material and on the other side with a conducting signal plate. The mosaic is of magnesium, beryllium or aluminium and it is formed by slow precipitation and afterwards lightly oxidized to increase the secondary emission coefficient. The signal plate may be a continuous metal layer or a metal mesh and the photo-conductive layer is of cadmium sulphide which is responsive to visible light, X-rays and γ-rays.
Patent GB-775254-A (GB)
Title: Articulated electrical waveguide construction
Inventor: GENT ALFRED WALTER
IPC: H01P3/14
Filed: 1955-09-01
Abstract: 775,254. Waveguides. STANDARD TELEPHONES & CABLES, Ltd. Sept. 1, 1955, No. 25096/55. Class 40 (8). An articulated waveguide comprises a series of short tubular metal sections 1 connected in tandem by spigot-and-socket joints which have just sufficient free play between the mating parts to permit bending of the guide without deformation of the sections. Low conductivity metal may be used for casting or turning the sections which are afterwards plated on the inside with silver or copper. A protective layer 4 of rubber or polythene may be extruded around the assembled sections or, alternatively, the sections may be covered with paper insulation and an outer sheath of lead. If the guide is intended for propagation in the H 0  1  mode the inner walls of the sections may be provided with circumferential grooves 5 to prevent mode degeneration. The Specification gives detailed dimensions of a typical guide.
Patent GB-431979-A (GB)
Title: Improvements in shutter construction
IPC: E04F10/10
Filed: 1934-08-31
Abstract: 431,979. Blinds. WORNICK, W. V., 2251, Field Avenue, Detroit, Michigan, U.S.A. Aug. 31, 1934, No. 25110. Convention date, Oct. 11, 1933. [Class 52 (v)] [See also Group X] A blind or shutter for a window or other opening comprises two sets of leaves or plates 6 each set pivoted on a common axis and adapted to overlap when opening and to spread fanwise to cover the opening as shown in Fig. 2. In the arrangement shown in Figs. 5 and 6, both sets are pivoted and the leaves alternately arranged on the same drum 12. The leaves are moved by gears on the shafts 18, 41, which are driven by chain and sprocket 33 and gear train 32, 31, 28, 27, 22 ; gears 45, 43 connecting the drive to one set of leaves and gears 19... 21 to the second set. The gear sectors on the leaves and the driving gears on the spindles 18, 41 are mutilated as shown in Fig. 6 for the extreme positions of each leaf when fully opened and closed. In a modification, Fig. 7, the sets of leaves are mounted on separate spindles 55, 56 and moved by sliding racks 57 driven by pinions 59 and gear train 62, 64, 66 and hand-operated chain sprocket 70. Each rack and pinion is mutilated for the fully opened and closed positions. In a third arrangement, the leaves are moved by cams designed as shown at 101, Fig. 13, to give no movement when the leaves reach extreme positions.
Patent GB-963004-A (GB)
Title: Air filters
IPC: B01D46/10
Filed: 1963-06-25
Abstract: 963,004. Air filters. FRAM CORPORATION. June 25, 1963 [Aug. 13, 1962], No. 25243/63. Addition to 895,134. Heading BIT. [Also in Division E2] An air filter comprises a fibrous filter batt 20, Fig. 6 supported by a holder comprising two similar quadrangular frames 12, 12<SP>1</SP> each provided with a pervious metal sheet 11, 11<SP>1</SP>, each frame, Fig. 3, comprising a strip of thick stiff paper that is folded along two spaced longitudinal lines to form a trough for the marginal portions of the associated metal sheet and having a wide outer wall 13 and two symmetrically inclined side walls 14, 15, the strip also being folded transversely to form the four frame sides, each edge of the batt being engaged by the frames when the latter abut one another with the batt therebetween. The side walls 14, 15 have flanges 16, 17 which are secured face to face with adhesive such as a heat-sealing adhesive or a latex adhesive not requiring the application of heat. The batt 20 is preferably formed of highly crimped acetate fibres from about ¢-4 inches long retained by a bonding agent. The frames 12, 12<SP>1</SP> are preferably hingedly secured together along a pair of adjacent sides thereof by an adhesive strip 19, the opposite pair of adjacent sides being provided with a flexible moulded plastic latch 21. The filter may be disposed to extend across an air conduit, Fig. 9 (not shown), having a slot in one wall for receiving the filter and having L-shaped metal guideways for the filter.
Patent GB-227195-A (GB)
Title: Improvements relating to electric vehicles
IPC: H02P5/68
Filed: 1923-10-10
Abstract: 227,195. Tilling-Stevens Motors, Ltd., and Whitehorn, H. K. Oct. 10, 1923. Casings and' supports.-Two electromotor units adapted for seriesparallel control and intended for use on motor vehicles are mounted with their armatures 7 in tandem upon a shaft 1 within a frame having separate magnets 11 and field windings 12. The commutators 9 are disposed at opposite ends of the machine. The frame is built up of two magnetic yokes 10. a nonmagnetic spacing ring 13 between the yokes, and end brackets carrying the bearings. The machine may be coupled bv a universal joint to a single driving shaft which may be connected to a driving wheel on each side of the vehicle. A ventilating fan 14 may be provided. Specification 227,367, [Class 79 (iii), Motor vehicles, Arrangement &c. of parts of], is referred to.
Patent GB-361954-A (GB)
Title: Improvements in a process for the production of endless intaglio printing formes
IPC: G03F7/18
Filed: 1930-08-25
Abstract: 361,954. Photomechanical printing- cylinders. ROTOPHOT AKT.-GES. FR GRAPHISCHE INDUSTRIE, 110, Alexandrinenstrasse, Berlin. Aug. 25, 1930, No. 25374. Convention date, Aug. 27, 1929. [Class 98 (ii).] In the production of endless printing cylinders a complete picture pellicle resist exactly equal in length to the length of the cylinder periphery is transferred thereto from a flexible stripping support which is temporarily secured on a second transfer cylinder (e.g. of caoutchouc). For dry stripping the stripping support may be of paper pulp treated with a watery caoutchouc emulsion, with a coating of caoutchouc and nitrocellulose. The picture pellicle may be obtained either from a silver bromide film by differential hardening during or subsequent to developing, or by a bichromate process. The colloid coating is incised at the ends of the picture and one edge turned up from the support. The pellicle support is mounted on the transfer cylinder 5, Fig. 1, which is larger than the printing cylinder 11, either by sticking, or by means of sunk spindles 6, Fig. 5, which can be turned by pinions 8 to stretch the support. The cylinder 5 is lowered against the printing cylinder 11 by screw-shafts 12, 13 and driven gearing 21, 19, 18, so as to grip the upturned edge of the resist. The cylinder 11 is then rotated by gearing 22 through one revolution at the end of which the two edges of the resist will exactly join up. The lowering gearing 20, and the gearing 23 may be operated from motors which are synchronously switched on and off to stop the lowering of the cylinder 5 and start the rotation of the cylinder 11 at the proper moment.
Patent GB-172127-A (GB)
Title: Improvements in and relating to valve transmitters and receivers for wireless telegraphy and telephony
IPC: H03B5/10
Filed: 1920-09-02
Abstract: 172,127. Macrorie, A. K.., Airey, H. Morris-, and Shearing, G. Sept. 2, 1920. Thermionic oscillation generators.-In order to reduce or damp out objectional harmonics in a valve receiving or transmitting set for wireless telegraphy or telephony, an adjustable inductance L is placed in series with an adjustable condenser C in the anode circuit, and the value of these elements is so adjusted that the circuit comprising them and the remainder of the aerial circuit between the tapping-point X and the point Y is in tune with the aerial circuit as a whole. Preferably the value of the inductance L is considerably greater than the inductance between the points X and Y, and the condenser C is comparatively small.