baber/WOPTO huggingface dataset:
Patent GB-1529194-A (GB)
Title: Sawtooth current generators
IPC: H03K4/62
Filed: 1975-11-13
Abstract: 1529194 Field deflection circuits for television MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 13 Nov 1975 [13 Nov 1974 5 Dec 1974 13 Feb 1975] 46939/75 In a class D field deflection circuit, a pulse train, width modulated with a sawtooth wave, is fed to the bases of two series connected transistors 31, 32 connected in series with a switching device 33 across a D.C. supply 34, 35. Inverse damping diodes 36, 37 are connected across the respective transistors. The field deflection coils 42 are connected to the common emitter junctions of the transistors 31, 32. The circuit has provision for clamping the retrace voltage at the end of each pulse but preventing clamping of the field retrace voltage at the end of each sweep. As described, transistor 31 is turned on by the first widthmodulated pulse so as to provide a charging current for a capacitor 43 via capacitor 40 and inductor 41. At the end of the first pulse, transistor 32 is turned on and transistor 31 turned off, the current in inductor 41 tends to be maintained via damping diode 36 until it reverses when current then flows from capacitor 43 through inductor 41, capacitor 40 and transistor 32. The current in inductor 41 now continues via diode 37 and transistor 38, turned on by transistor 46. During the set of width modulated pulses from 30, capacitor 43 is discharging into the field deflection coils 42 giving the field sweep. During the field flyback, as soon as the voltage at the collector of transistor 31 becomes greater than that of line 35, diode 33 becomes reverse biased inhibiting the clamping of the flyback. The energy stored in capacitor 40 is recovered via diode 37 and transistor 38. In Fig. 5 (not shown) diode 37 is connected across the emitter/collector path of transistor 31 and a capacitor is connected across diode 33. In Fig. 6 (not shown) diode 33 is replaced by a transistor turned on only during the field deflection period. Pulse-width modulated sawtooth signals are generated in Fig. 1 (not shown) by a long tailed pair of transistors one being fed with a field sawtooth and the other with a higher frequency (e.g. line frequency) triangular wave. In Fig. 2 (not shown) the field sawtooth is fed to the base of a transistor the emitter of which is connected to a tapping on a parallel resonant circuit tuned to the higher frequency and supplied with pulses at that frequency.
Patent GB-1476747-A (GB)
Title: Limb supports
IPC: A61F13/00
Filed: 1975-10-29
Abstract: 1476747 Elastic bandages EBONY SPORTS CO Ltd 29 Oct 1975 [30 Oct 1974] 47086/74 Heading A5R A limb bandage comprises a strip of elasticated material formed into an unbroken loop 2 carrying a fastening element 5 and a free portion 3 having a co-operating fastening element 6, so that when the loop 2 is placed over a limb and the portion 3 wound over it, the fastening elements 5, 6 may be adjustably overlapped to control the tightness of the bandage.
Patent GB-1410239-A (GB)
Title: Holder for live shrimp or like segmented body shell bait
IPC: A01K83/06
Filed: 1972-10-13
Abstract: 1410239 Bait holders T W HICKS 13 Oct 1972 [18 Oct 1971] 47296/72 Heading A1A A live bait holder comprises a shell 11 open at each end for the head and tail and with a slit 21 in the base for the legs of a shrimp. The shrimp is held in the shell by protrusions 35 which engage the shell layers and by a pair of forks 14 which engage the legs. The tines 31 of the forks are joined by a bar 32 and they slide in dovetail grooves 34 in the shell 11. The shell is mounted on the shank 12 of a hook 28 which has a loop guard 13. The shell may have an offside buoyancy chamber 36 causing the bait to swim lopsidedly. The shell may have positive or negative buoyancy and is preferably made of transparent plastics.
Patent GB-1450566-A (GB)
Title: Process for preparing electroconductive articles using electro conductive resins
IPC: C08J7/044
Filed: 1973-10-10
Abstract: 1450566 Coated products DOW CHEMICAL CO 10 Oct 1973 [10 Oct 1972] 47364/73 Heading B2E  An electro-conducting article is obtained by exposing the surface of an, electrically non- conducting hydrophobic polymer to an electrical discharge, applying to the surface a coating layer of a water-soluble electrically conductive quaternary ammonium resin dispersed in methanol, ethanol, or an aqueous solution containing a normally liquid water-soluble saturated aliphatic oxygen-containing organic compound having 1 to 5 carbon atoms and not more than 1 oxygen atom bonded to any 1 carbon atom or a 5 or 6-membered cyclic ether, provided that when the compound is a ketone it is acetone, and removing the solvent from the coating layer. The polymeric substrate may be a polyimide, polyester (e.g. polyethylene terephthalate), polyolefine (e.g. polyethylene, polypropylene, polystyrene, polyvinyl toluene, styrene-butadiene copolymers) and derivatives thereof such as poly(t-butyl) styrene, poly(alpha-methyl) styrene, polychlorostyrene, polyvinylidene chloride, interpolymers of vinylbenzyl chloride and styrene, and polycarbonates. The electrical discharge treatment increases the surface wetability and may be a Corona discharge treatment. Numerous suitable solvents for the coating compositions are listed. In the Examples films of polyethylene terephthalate, a polyimide, polyethylene, polyvinyl fluoride and rubber-modified polystyrene are coated.
Patent GB-1085129-A (GB)
Title: Improvements relating to boilers
IPC: F22B37/10
Filed: 1964-11-23
Abstract: 1,085,129. Tube walls for furnaces. L. & C. STEINMULLER G.m.b.H. Nov. 23, 1964 [April 16, 1964], No. 47546/64. Heading F4B. A flexible gas-tight connection between parts of a boiler comprises a transversely corrugated metal strip the longitudinal edges of which are welded to neighbouring parts of the boiler. As shown, a strip 3 bent to a trough-shaped cross-section is welded at edges 4, 5 to tubes 1, 2 forming part of a boiler tube wall. In a modification (Fig. 4) the metal strip is arched to connect together bent tubes. In a further alternative (not illustrated) where the boiler uses longitudinally finned tubes, the sheet metal strip 3 may be welded to the tube fins.
Patent GB-479118-A (GB)
Abstract: 479,118. Wireless receiving systems. STRAFFORD, F. R. W., HIGHER, O. S., and BELLING & LEE, Ltd. May 29, 1936, No. 15149. [Class 40 (v)] An aerial 8 is coupled to a receiver through a screened transmission line 9, 10 and two pairs of transformers 2, 3 and 5, 7 one of which is effective on short and the other on medium and long waves. The inductive reactance of the former is negligible compared with the latter when receiving medium or long waves, and when receiving short waves the self capacity of the medium-long wave portion renders it of negligible impedance. A condenser 11 renders the system resonant near the upper limit of the long wave band. Constructional details and dimensions of the transformers are given.
Patent GB-1451962-A (GB)
Title: Uses of silanes containing sulphonamide groups
IPC: C07F7/18
Filed: 1973-10-18
Abstract: 1451962 Coatings DYNAMIT NOBEL AG 18 Oct 1973 [18 Oct 1972] 48713/73 Heading B2E [Also in Division C3]  Metallic surfaces are given improved corrosion resistance and oxidic, metallic or other inorganic surfaces are given improved adhesion to organic polymers by treating the surface with a silane or a solution of a silane of the formula wherein n is an integer of from 1 to 8, x is an integer of from 1 to 4, p is 1, 2 or 3, R denotes H or a C 1-4  aliphatic radical, R denote C 1-6  alkyl or C 1-6  alkoxyalkyl and R" denotes alkyl, chloroalkyl, phenyl or phenyl substituted by one or more -Cl, -C 1-4  alkyl, -C 1-4  alkoxy, -NO 2  or -NH 2  groups. The surfaces may either by treated directly with the silane or silane solution, or the silane may first be incorporated into the organic polymer which is then used to subsequently coat the surface. Exemplified surfaces are glass, quartz, diatomaceous earth, sand, asbestos, mica, corundum, iron oxides, calcium carbonate, calcium sulphate, iron, copper, zinc, aluminium, tin and titanium. The substrates may be in the form of fibres, nonwoven fabrics, rovings, powders, mats, woven fabrics, sheets and wires. In Examples (1) glass fibres are coated with a 0.5% solution of N-(gamma-triethoxysilylpropyl) -para-toluene sulphonamide in trichlorethane and subsequently with an epoxy resin; (2) glass panes are dipped in a- 2% solution of N-(gamma-triethoxysilylpropyl)- methane sulphonamide in isopropanol and are subsequently coated with a 7.5% solution of styrene-butadiene copolymer in methylisobutyl ketane; and (3) N-(gamma - triethoxysilylpropyl)-para-chlorobenzene sulphonamide is mixed with a 7.5% solution of a styrene-butadiene copolymer in methylisobutyl ketane and subsequently coated on to glass panels.
Patent GB-1387536-A (GB)
Title: Methods and apparatuses for effecting replacement of silver cans in spinning frames
IPC: D01H9/00
Filed: 1973-10-19
Abstract: 1387536 Spinning yarn from sliver TOYODA JIDOSHOKKI SEISAKUSHO KK 19 Oct 1973 [19 Oct 1972] 48883/73 Headings DID and D1F In the supply of slivers to one or both sides of a spinning frame 1 from cans and the removal of empty cans therefrom, Figs. 2 and 3, immediately before the slivers in cans b in an inside row run out, a sufficient number of full cans a is moved automatically along a supply path 15 and these cans are stopped opposite their respective spinning stations. Thereafter, replacement of cans is effected automatically by piecing the leading ends of sliver in the full cans with the trailing ends of sliver remaining in cans b and then simultaneously moving cans in the same direction so as to push empty cans d onto path 14 for removal by a conveyor passing through a space 12 in the frame, move outside cans c (which at this stage are half-full of sliver) to an inside row, and move full cans a to an outside row. In a can circulating system, Fig. 1, for distribution and transportation of cans between drawing frames 4 and spinning frames 1, full cans a available on a conveyor 5 moving in the direction of arrow A are directed through leading means 9 onto paths 15 in the direction of arrow B as required by the frames, and empty cans d are returned along path 6.
Patent GB-1333051-A (GB)
Title: Aluminosilicate zeolites and their use as shape selective catalysts
IPC: B01J29/70
Filed: 1970-10-16
Abstract: 1333051 NR 4 <SP>+</SP> zeolite MOBIL OIL CORP 16 Oct 1970 [16 Oct 1969] 49242/70 Heading C1A [Also in Divisions B1 and C5] A synthetic crystalline aluminosilicate zeolite contains benzyltrimethylammonium ions in the structure. The formula of the zeolite is 0À8-1À2 M 2/n O.Al 2 O 3 .5-20 SiO 2 .0-10 H 2 O where the M fraction, as prepared, is preferably >0-0À4 R 2 O.0À3-0À6 K 2 O.balance Na 2 O, and the zeolite has a given X-ray diffraction pattern. The reaction mixture may contain NaAlO 2 , NaOH, KOH, PhMe 3 NCl, and colloidal SiO 2 , and may have the molar composition The cations may be exchanged for H<SP>+</SP>, NH 4 <SP>+</SP>, alkyl or aryl ammonium, or other metals, e.g. rare earths, Sn, Pb, Ti, Zr, Hf, Ac, Sb, Bi, Cr, Co, Ni, Pt, Pd, Ru, Rh, Os, Ir, Mo, W, Mn, Zn or Cd, using aqueous or alcoholic solutions. The zeolite may be calcined at 700-1600‹ F. in the presence of moisture. It may be granulated or extruded to - 2 + 400 Tyler mesh. Exs. 1-6 describe production of the zeolite; Exs. 7 and 8 exchange with RECl 3  and NB 4 Cl soln.; and Ex. 9 exchange with NH 4 Cl followed by NiSO 4 .
Patent GB-1447229-A (GB)
Title: Shock absorber
IPC: F16F9/44
Filed: 1972-10-26
Abstract: 1447229 Hydraulic shock absorbers ITT INDUSTRIES Inc 18 Oct 1973 [26 Oct 1972] 49451/72 Heading F2S In a hydraulic piston-cylinder shock absorber for damping the pivotal movements of railway bogies, the piston 2 is closed (apart from a bleed hole 38 which equalises pressures when the piston 2 is at rest) and divides the cylinder 1 into two chambers 9, 10, each chamber communicating with a reservoir 7, 8 outside the cylinder, via a valve 11, 24 which opens towards the cylinder and a valve 16, 28 which opens towards the reservoir. The opening pressures of the valves 16, 28 are adjusted in reciprocal ratio to the piston areas to give a damping force which is equal in both directions of piston movement. On inward movement of the piston 2 liquid flows from the chamber 10 to the reservoir 7, 8 via passages 31-33, valve 28 and passages 34, 26. The chamber 9 is replenished from the reservoir through passage 14, non-return valve 11 and passage 15. On outward movement of the piston, liquid flows from the chamber 9 to the reservoir through the passage 19, valve 16 and passage 20, and the chamber 10 is replenished from the reservoir through the passages 26, 27 and non- return valve 24.
Patent GB-1424200-A (GB)
Title: Packaging board
IPC: B32B3/28
Filed: 1972-10-27
Abstract: 1424200 Laminates IMPERIAL CHEMICAL INDUSTRIES Ltd 4 Oct 1973 [27 Oct 1972] 49587/72 Headings B5N and B5A A packaging board comprises two skins divided into longitudinal strips, each strip being connected via longitudinally extending ribs to strips of the other skin. In Fig. 4 the board may be produced by forming a profile, e.g. by extrusion, which comprises two continuous skins 10 and 11 interconnected by longitudinally extending ribs 12 to form longitudinal channels 13, 14 and then dividing both skins into longitudinal strips 17, 18, 19 by slitting along some of the channels in such a manner that the continuity of the board is maintained and its flexibility increased. Preferably one skin is divided along alternate channels 13 and the other skin is divided along the other alternate channels 14 so that each strip 17 is connected to two ribs 12a and 12b each of which is connected to different but adjacent strips 18, 19 of the other skin. In an alternative method the board is produced by separately extruding two flat and one corrugated sheets of the thermoplastics material sticking the two flat sheets to the corrugated sheet and slitting the flat sheets. In this method three flat sheets may be extruded and the intermediate sheet corrugated by means of rollers. The boards may be produced from polyethylene, homopolymers or copolymers of propylene, acrylonitrile/butadiene/styrene copolymers or polyvinyl chloride. During slitting of the outer skins the edges of the board may also be trimmed.
Patent GB-1452295-A (GB)
Title: Ball throwing device
IPC: A63B69/40
Filed: 1973-10-25
Abstract: 1452295 Ball throwing device E J POLITZER 25 Oct 1973 [13 Nov 1972] 49730/73 Heading A6D A ball throwing device, e.g. for practising tennis, includes a frame 1 whose inclination is adjustable, ball guiding means in the form of a barrel 46 having a loading chamber 45 is fed with balls B from a hopper 5, a deflecting member 65 at the end of the barrel 46, means for automatically alternating the direction in which balls are deflected by the deflecting member 65, a driving member 12 for imparting an impulse to a ball B in the loading chamber 45, means for varying the size of the impulse, and means for varying the throwing rate of the device. As described the frame 1 has telescopic legs 6 which allows the inclination of the frame 1 to be adjusted. The ball is thrown by being struck by the driving member 12 which consists of a lever mounted in housing 10 and connected to a torsion spring (not shown). The lever 12 is moved in the direction of arrow f 2  to load the torsion spring by an electric motor 22 which drives a shaft 21. The shaft 21 carries a disc 19 having an arm 23 carrying a pawl 24. As the disc 19 rotates in the direction of arrow f 2  the pawl 24 engages a projection 18 on the lever 12 to move the lever 12 and thus load the torsion spring. When the pawl 24 engages a stop member 26 the lever 12 is released and strikes the ball B under the action of the spring. The stop member 26 is mounted on a lever 27 whose position can be adjusted (e.g. along slot 29) to vary the magnitude of the impulse given to the ball. The motor 22 is driven continuously to produce the maximum throwing rate. The throwing rate can be adjusted by a control device 30 which produces a predetermined dwell period of motor 22 for each cycle of rotation of disc 19. The balls B are fed one at a time into the loading chamber 45 from hopper 5 by a gate mechanism 4. This gate mechanism 4 includes a pair of slidable rods 50 which close the mouth of the hopper 5. The rods 50 are reciprocated to allow one ball to drop into the loading chamber 45 by a bell crank lever 57 actuated by a cam 60 on disc 19. Movement of the gate mechanism 4 also operates a lever 64 which agitates the balls in hopper 5 to prevent the balls jamming, e.g. by a "vault" effect. When a ball B has been struck by lever 12 it is guided by a barrel 46 consisting of a series of rods 48. A deflecting member 65 is pivotally mounted adjacent the end of the barrel 46 and deflects the ball B as shown in Fig. 6. The deflecting member 65 is alternately pivoted to the left and right by means of a mechanism including bell crank lever 68, link 74 and a triangular plate 78 which is engaged by a finger 85 mounted on the gate mechanism 4. Alternatively the member 65 may be locked co-axially with the barrel 46. The deflecting member 65 may also include a flap 91 which can be adjusted in direction of arrow f 8  to deflect the ball upwardly. A friction member (not shown), e.g. a toothed lever, mounted at the bottom of deflecting member 65 may impart spin to the ball.
Patent GB-1241990-A (GB)
Title: Optical grating device and method of making same
Inventor: KANTOR FREDERICK W
IPC: G02B5/18
Filed: 1968-10-24
Abstract: 1,241,990. Diffraction gratings. F. W. KANTOR. Oct.24, 1968 [Oct. 25, 1967], No.50609/68. Heading G2J. An optical grating comprises a substrate 76 having a serrated surface comprising a plurality of ridges 78 with corresponding surfaces 81 of each ridge inclined acutely with respect to an imaginary surface 82 joining the peaks of the ridges, a plurality of built-up layers 80 on each of said corresponding surfaces and terminating at a terminal surface, extending across the layers 80, and the terminal edges of selected ones of the layers being recessed from the terminal surface. The terminal surface may be flat and may be parallel to imaginary surface 82. In one embodiment the corresponding surfaces of the ridges 83 Fig. 10 are curved, the curvatures being such that the spacing between terminal edges of alternate layers is graduated and the device focuses incident radiation. The grating may act either as a zone plate or as a fresnel lens. The recesses in the terminal edges are formed by etching. Some examples of materials are given; e.g. silicon oxide and aluminium layers; iron-magnesium layers (especially for use with X-rays). Suitable substrates may be glass or epoxy resin. Preferably the substrate is transparent to radiation and the layers opaque, the layers being cut down to the peaks of the ridges to form a terminal surface joining all said peaks.
Patent GB-1196590-A (GB)
Title: Rubber Articles Reinforced with Regenerated Cellulose Fibres
Inventor: POOLE ANTHONY GERALD
IPC: C08L1/00
Filed: 1966-11-14
Abstract: 1,196,590. Pneumatic tyres. COURTAULDS Ltd. 6 Oct., 1967 [14 Nov., 1966], No. 50842/66. Heading B7C. [Also in DivisionB5] A tyre is reinforced by fibres of regenerated cellulose, the fibres incorporating an amino ether of cellulose having primary and/or secondary amino groups. 1-20 wt. per cent based on wt. of cellulose of amino ethyl cellulose having N content of 1-1À3 wt. per cent may be incorporated. The amino ether may be formed in situ in the cellulose of the fibres by reaction with a suitable reagent, e.g. 2-aminoethyl sulphuric acid, 2-chloroethanolamine and the corresponding monoalky or dialkyl compounds, during or after the manufacture of the regenerated cellulose fibres; or the amino ether may be mixed with cellulosic material which is then made into alkali cellulose, or mixed with alkali cellulose, the alkali cellulose then being xanthated to form viscose which is subsequently spun into regenerated cellulose filaments. The fibres may be continous filament yarn. The yarns may be twisted Z twist and then doubled to make twofold cords S twist. Specification 1,052,621 is referred to.
Patent GB-1126181-A (GB)
Title: A machine for removing material from large elongate workpieces
IPC: B23C3/30
Filed: 1965-12-03
Abstract: 1,126,181. Milling machines; work supports. INNOCENTI SOC. GEN. PER L'INDUSTRIA METALLURGICA E. MECCANICA. 3 Dec., 1965 [4 Dec., 1964], No. 51355/65. Headings B3B, B3K and B3T. A machine tool, e.g. for milling slots in a large rotor 1 of an electric machine, comprises a tool-head-carrying upright 59 mounted for feed movement on a horizontal slideway 60, a stationary table alongside the slideway having a workholder comprising two end supports 2, 8, a plurality of intermediate supports 13 each having a pair of adjuatable shoes 15 adapted to engage the workpiece 1, and a plurality of cradle supports 17, 18 each having a cradle 24 which is rotatably mounted and adjustable in position in order to align its axis of rotation with the axis of the workpiece, at least one, 18, of the cradle supports including drive means for rotating the cradle and thereby the workpiece. The end supports 2, 8 each include lower and upper jaws 3, 3a, 9, 9a one or both (Fig. 9, not shown) of which may be operated by hydraulic cylinder means e.g. 4, 10. An indexing device 5 is arranged on one end support 2 and fixed to the work end portion 1a. The end supports have adjustable locating abutments 11, 12 for locating the rotor endwise (also in Fig. 10, not shown). The shoes 15 are interchangeable for different workpieces and a screw 14 serves to adjust the spacing of slide blocks 13b on which the shoes are mounted. The cradles 24 are supported by rollers 19, 20 the spacing of which is adjusted by power operated right and left handed screw 38 to adjust the height of the cradle. The rollers 19, 20 of cradle support 18 may be driven by motor 55 and worm gearing 51, 53 and 52, 58. A spring loaded fork 26 having rollers (25), (Fig. 6, not shown), engaging arcuate grooves 24a in each cradle holds the latter on the rollers 19, 20. In an alternative embodiment (Fig. 8, not shown) the rollers of a cradle support are fixedly spaced and are adjustable in height by power operated wedge means and are driven by spur gearing.
Patent GB-1008276-A (GB)
Title: Derivatives of dodecahydroazulenofuran
IPC: C07D493/04
Filed: 1963-12-31
Abstract: The invention comprises the compound named as Su-12334 which has the formula <FORM:1008276/C2/1> and the extraction thereof from a plant of the family Compositae, particularly from plant materials of the plants of the genus Helenium such as Helenium amarum, preferably by first extracting the plant material with a suitable lipoid solvent, e.g. petroleum ether or hexane, to remove any fatty material prior to the preparation of a crude extract.  The latter is obtained by treating the plant material with a lower alkanol, e.g. methanol, at an elevated temperature followed by additional extraction of the plant material with water, combination of the extracts which are then purified firstly by counter-current distribution with a water-immiscible solvent, e.g. n-butanol, n-butanol is then removed, for example by distillation under reduced pressure, and the solid is treated with benzene or another solvent in which the compound is soluble, insoluble material is removed by filtration and the resulting liquid phase is further purified by chromatography.  The eluates containing the desired compound are identified by paper chromatography and after the removal of the solvents, fractional crystallization is the final step in the purification.  Also included within the scope of the invention are the O-acyl derivatives of Su-12334 which may also be used in purification of SU-12334, being hydrolysed to the free alcohol.  In an example the acetyl compound is prepared by treatment of Su-12334 with acetyl chloride in pyridine. Pharmaceutical compositions for oral or parenternal administration comprising Su-12334 or an acyl derivative thereof and an inert pharmaceutical carrier or diluent, the said compositions having an analgesic effect which is not antagonized by nalorphine.