baber/WOPTO huggingface dataset:
Patent GB-392882-A (GB)
Title: Improvements in or relating to liquid level indicating arrangements of the transparent gauge type
IPC: G01F23/02
Filed: 1931-12-18
Abstract: 392,882. Indicating liquid levels. ELECTRICAL IMPROVEMENTS, Ltd., Carliol House, Newcastle-on-Tyne, and BLACKBURN, C. L., 2, Ryder Street, London. Dec. 18, 1931, No. 6402/33. [Class 123 (i).] In a liquid-level indicator of the transparent gauge type, differently coloured beams of light are directed on to the gauge at such an angle to one another that from a chosen observing point the gauge will appear as of one colour above the liquid-level, and of the other colour below the liquid-level. The indications of the gauge may be reproduced at a convenient position on the firing floor by the optical arrangement described in Specification 387,752. In Figs. 8 and 9, two colour screens H4, H5, respectively red and green, are arranged between a condensing mirror H<2> and the gauge G. A source of light H<1>, and a reflector H<3> provide the illumination, and the red rays K<2> are deflected on to the gauge by a prism H<6>, the green rays K<1> going straight to the gauge. The green rays' emerge as divergent beams K<3>, K<4>, one of which passes to the projecting apparatus J, and the red rays also emerge as divergent beams K<5>, K<6>. The beams K<3>, K<6> are caused by the projecting apparatus to show the water level as the dividing line between red and green parts of the image of the gauge, Figs. 8 and 9 showing the path of the rays below and above the water level, respectively. The gauge may be viewed directly without a projection apparatus by locating a vertical light strip N behind a diffusing screen, and two colour screens O, O<1> with a cylindrical lens P close to the gauge G, the colour screens being in the focal plane of the lens. To an observer walking past the gauge, it appears in turn green above the water level, and dark below, then dark above the water level and red below. In a modification, differently coloured glow discharge tubes may be used. A gauge glass of the kind described in Specifications 263,638, [Class 123 (i), Liquidlevel regulating &c.], or 392,642 may be employed.
Patent GB-719382-A (GB)
Title: Improvements relating to the degradation of dextran
Inventor: PAUTARD FREDERICK GEORGE EDWAR
IPC: C08B37/02
Filed: 1951-03-19
Abstract: Dextran is degraded by pyrolysis, i.e. by thermal rupture of its molecules, under non-oxidizing conditions.  Degradation may be effected by heating, under such conditions, an aqueous solution of dextran of pH 6.5 to 9.5 preferably 7.00 to 7.05, or dextran powder dry or suspended in an inert liquid, e.g. paraffin, to temperatures between 115 and 230 DEG C. preferably between 140 and 200 DEG C.  The dextran may be heated by infra-red radiation or by high-frequency electrical action.  Degradation may be carried out in steam nitrogen or helium and in the presence of a reducing agent, e.g. sodium sulphite, powdered aluminium, hydroquinone, pyrogallol, iron carbonyl or sulphur dioxide.  The dextran may be degraded until the ratio of the kinematic viscosity at 37 DEG C. of an aqueous solution containing 6g of dextran per 100 cc to that of water is between 2.7 and 8.  The first Provisional Specification also describes the heating of dextran powder in vacuo or in an atmosphere consisting of or containing hydrogen or carbon monoxide.  Calcium sulphate or bisulphite may be used as a reducing agent.  The second Provisional Specification also describes the use of metallic hydrides, ferrous, stannous or nickelous salts and nickel carbonyl, as reducing agents.ALSO:A blood plasma substitute is obtained by dissolving in water, e.g. to form a 6 per cent solution, dextran degraded by pyrolysis (see Group V) and adding a physiological saline, e.g. a 0.9 per cent solution of sodium chloride, the pH of the mixture being preferably 7.0.
Patent GB-667996-A (GB)
Title: Improvements in magnesium base alloys
IPC: C22C23/04
Filed: 1950-03-15
Abstract: A magnesium-base alloy having high yield strength under compression has the following composition: Li, 6-12 per cent; Zn, 16-25 per cent; Cd, 1-20 per cent; Mg, the balance.  The alloy may be made by melting Mg under about one-tenth of its weight of a flux composed of 3 parts LiCl to 1 part LiF previously dehydrated at about 1,600 DEG F.  Zn and Cd are added at about 1,300-1,400 DEG F and Li is added at about 1,250 DEG F by means of an inverted ladle.
Patent GB-1349325-A (GB)
Title: Transport system in which a vehicle propelled by a linear induction motor along a predetermined path is arrested and restarted at predetermined stations along the path
IPC: B65G23/00
Filed: 1972-02-11
Abstract: 1349325 Linear induction motor propelled transport system MERLIN GERIN 11 Feb 1972 [11 Feb 1971] 6585/72 Heading B7L A transport system comprises a vehicle 16, Fig. 1, propelled along a track by a linear induction motor having a magnetic field structure and an armature structure, one of these structures being movable with the vehicle 16 and the other structure extending along the track, the propulsive force of the motor being a function of the distance between confronting air gap faces of these two structures, and having support and guide means for the vehicle 16 such as rollers 22, 22<SP>1</SP>, 24, 24<SP>1</SP> on the vehicle engaging respective running surfaces 30, 36, 32, 34 of two guide rails. The vehicle 16 is arrested and restarted at predetermined points A, B at which the support and guide means are adapted to reduce the said distance and positively engage the vehicle 16, e.g. by recesses 38, 40, 46, 48 accommodating the rollers 22, 22<SP>1</SP>, 24, 24<SP>1</SP>, upon de-energization of the magnetic field structure, and upon re-energization a restarting force greater than that obtained without the said distance reduction is provided. Alternative support and guide means may comprise a generally flat track area (78), Fig. 6 (not shown), having lateral grooves (80, 82, 84) to receive rollers (72, 74, 76) on the vehicle 16 at stopping points, or the vehicle 16 may have a pair of parallel runners (56, 58), Figs. 3 and 4 (not shown), to run on series of rollers (60, 62) arranged along the track. The latter arrangement is employed as shown in Fig. 8, in a gridwork of tracks where in addition to the main track in direction X, additional cross tracks may be provided in direction Y. The vehicle has pairs of runners extending in both these directions to run upon the appropriate series of rollers and the magnetic field structure 140 carried by the vehicle is cross-shaped and selectively energizable to propel the vehicle in the desired direction, the stopping and restarting points being arranged at track crossings. The rollers are mounted for resilient movement in the axial direction of each, Fig. 9 (not shown), to facilitate disengagement therefrom of vehicle runners at track crossings. Reference has been directed by the Comptroller to Specification 1,251,438.
Patent GB-660246-A (GB)
Title: Pipe couplings
IPC: F16L21/04
Filed: 1949-03-10
Abstract: 660,246. Pipe joints; stopping leaks. DRESSER INDUSTRIES, Inc. March 10. 1949 [Aug. 3, 1948], No. 6596/49. Classes 99 (i) and 99 (ii). A pipe coupling comprises a tubular member 4 with an enlarged pipe-receiving end having an annular channel portion which forms an inwardly-facing annular recess and comprises a cylindrical band and spaced, integral, inwardly-projecting, continuous, annular flanges one of which joins the tubular member whilst the other has uniformly-spaced threaded apertures, an annular gasket 5, an annular follower ring 6 in the recess, and bolts 7 engaged in the apertures to urge the follower ring against the gasket. The member 4 is a loose fit on the pipe 3, and has a reduction 11 to receive a pipe 2 which is welded therein. The gasket may be made from a strip having bevelled overlapping edges and has an aligning groove 20 to co-operate with an annular projection on the ring; the projection stops short of a split in the ring. In a modification, Fig. 4 (not shown), the channel section constitutes a separate part which is welded to a socketed pipe. A further modification, Fig. 5 (not shown), suitable for joining pipes or as a repair unit, comprises a sleeve having gasket recesses at both ends and an intermediate reduction.
Patent GB-1031225-A (GB)
Title: Pump and liquid level regulator
IPC: F16N19/00
Filed: 1963-02-19
Abstract: 1,031,225. Reciprocating pumps. R. E. NELSON. Feb. 19, 1963 [March 19, 1962], No. 6605/63. Heading F1A. A reciprocating pump piston 70 is driven by a rod 36 attached to a diaphragm 30 which is subjected to the pressure fluctuation in the crankcase of a reciprocating engine. A duct connected to a port 12 extends into the crankcase to a point slightly below the required oil level therein (Fig. 2, not shown). A number of holes in the piston 70 co-operate with an axially moveable O-ring to act as a discharge valve. The head 35 of the piston rod 36 is held within a recess 313 in a thimble 31 so as to allow for lost motion between the diaphragm and piston. The pump operates until the end of the duct is submerged below the oil level, when reciprocation of the piston stops due to the lost motion device.
Patent GB-119997-A (GB)
Title: Improved Dibber for use in Planting Potatoes, Tubers, Plants or the like.
Inventor: REUSS RUSSELL BENJAMIN LAWSON
IPC: A01C5/02
Filed: 1918-04-18
Abstract: 119,997. Reuas, R. B. L. April 18, 1918. Planting-tools.-Relates to a hand dibbler for use in planting potatoes, plants, &c., and consists of a tapered cylinder 1 with a cutting-edge and attached to a forked strap 2 carrying a foot rest 3 and handle socket 4.
Patent GB-1375803-A (GB)
IPC: E05F1/12
Filed: 1973-02-09
Abstract: 1375803 Spring hinges DORMA-BAUBESCHLAG GmbH & CO KG 9 Feb 1973 [14 Feb 1972] 6620/73 Heading E2F In a spring-loaded hinge comprising at least two relatively rotatable hinge elements 11 (12) and 14 each including a leaf 13, 15 and a sleeve 17 (19) and 21 respectively, a tubular hinge pin 23 is inserted into the hinge element sleeves and surrounds a torsion spring 36 which, at one end 35, is non-rotatably connected to the tubular hinge pin 23 and, at its other end 37, is connected to the hinge sleeve 17 of the first hinge element 11 through an inner plug 29 by means of a ratchet means to prevent rotation in one direction. A dog, in the form of a bowed leaf spring 38, is provided to prevent relative rotation between the second element (14) of the hinge and the tubular hinge pin 23 secured to the first hinge element 11 and the dog extends into a recess 22 in the hinge element 14 upon assembly of the hinge. The tubular hinge pin 23 is swaged at its upper end to an annular groove in an outer plug 25 and the latter has a closable central bore 27 leading to a polygonal bore 28 in the inner plug 29 in order to permit rotation of the latter by a tool for adjustment purposes. Subsequent rotation of the inner plug 29 will cause the tubular hinge pin 23 firstly to be rotated by the torsion spring 36 until the bowed portion of the leaf spring 38 engages in the recess 22. Upon further rotation of the inner plug 29 of the torsion spring 36 will be tensioned by means of the ratchet mechanism.
Patent GB-143995-A (GB)
Title: Improvements in or relating to barrel bungs, or the like
IPC: B65D39/08
Filed: 1919-03-17
Abstract: 143,995. Lewis, J. March 17, 1919. Bungs; tapping.-A wooden barrel bung, or a tapping-bush such as that shown, with a recess 10 in the driving-face 7, is formed with the grain of the wood parallel with the axis of the bung &c.
Patent GB-1178751-A (GB)
Title: Method of Surface Treating Shaped Articles of Thermoplastic Synthetic Polymers
IPC: C08J7/00
Filed: 1967-02-13
Abstract: 1,178,751. Surface roughening of shaped articles, films and filaments. SEKISUI KAGAKU KOGYO K.K. 13 Feb., 1967 [11 Feb., 1966; 1 March, 1966; 8 March, 1966], No. 6763/67. Headings B5A and B5B. [Also in Divisions B6 and C3] Shaped articles, films, sheets and filaments of thermoplastic synthetic polymer material have their surfaces uniformly roughened, so enabling them to be written or printed upon, by impregnating the surface layer of the said articles with a thermally decomposable foaming agent in the liquid state, and then thermally decomposing said impregnated foaming agent to evolve a gas which erupts and escapes from the thermally softened surface of the said article. The article, film or filament may be at a temperature below the decomposition temperature of the foaming agent, and the said film or filament, impregnated with the foaming agent is then heated, or the article, film or filament may be impregnated with the foaming agent immediately after the formation of the said article, film or filament and while its temperature is higher than the decomposition temperature of the foaming agent, the foaming agent then being decomposed by the heat of the article, film or filament. Such impregnation of a shaped article may be effected, for example, immediately after its extrusion from a die, or after rolling between forming rolls, or after injection moulding. Foaming agents may be used alone if they are liquids per se or they may be dissolved in a solvent. The foaming agent solution may contain a second solvent for the polymer if necessary, and may also contain other additives such as thickeners, fillers, antistatic agents and permeation inhibitors. The foaming agent may also be applied to a stretched film or filament, or during the stretching thereof. Specified foaming agents are paratoluene sulphoazide, diethylazodicarboxylate and benzene sulphoazide, azobisisobutyronitrile, dinitrosopentamethylene tetramine, azodicarbonamide, N,N<SP>1</SP>- dimethyl - N,N<SP>1</SP> - dinitroso terephthalamide, benzene sulphonyl hydrazide, p-toluene-sulphonyl hydrazide, diphenyl sulphone, 4-4<SP>1</SP>-dihydroxybisazodicarbamic acid amide, trihydrazine triamine, diazoaminobenzene, and 4,4<SP>1</SP>-oxybisbenzene sulphonyl hydrazide. Examples include the treatment of nylon filaments, of films of polycarbonates, polypropylene, polyacrylonitrile, polyvinyl. chloride, polystyrene, polystyrene - polybutadiene, styrene - butadiene copolymer and of a blend of the latter copolymer with polystyrene; of sheets of nylon, polyvinyl chloride and polystyrene; of a foamed sheet of polystyrene; of a polymethyl methacrylate plate; and of vessels of polycarbonates, polyethylene and polystyrene.
Patent GB-685504-A (GB)
Title: Substituted succinimides
Filed: 1951-03-21
Abstract: The invention comprises a -phenyl-a ,b -dimethyl succinimide and its N-methyl derivative.  These compounds are made by reacting a  - phenyl - a ,b  - dimethyl succinic acid or the anhydride thereof with ammonia or methylamine, and heating the resulting reaction product. When the acid is used, the intermediate product is the di-salt with ammonia or methylamine; from the anhydride the intermediate is the half amide, i.e. the corresponding succinamic acid.  This half amide is converted to the substituted succinimide by heating, preferably with a dehydrating agent, e.g. acetyl chloride or acetic anhydride. A table shows the anti-convulsant effect on cats and mice of the product.  In examples: (1) a  - phenyl - a ,b  - dimethylsuccinic acid and ammonium hydroxide are mixed and the water distilled off. The residue is heated at 200-250 DEG  C. to give a -phenyl-a ,b -dimethyl-succinimide; (2) the corresponding N-methyl derivative is obtained using methylamine in place of ammonia.
Patent GB-565244-A (GB)
Title: Improvements in or relating to valve mechanism for internal-combustion engines
IPC: F01L1/12
Filed: 1943-04-29
Abstract: 565,244. Valve gear ; admission passages. STARK, F. H. April 29, 1943, No. 6807. [Classes 7 (ii) and 7 (vi)] In an engine having parallel banks of cylinders 10a, 10b and a common overhead camshaft 14 actuating inlet valves 13a, 13b in both banks, a common induction manifold 16 is disposed between the banks and may be formed integrally with both or either of the banks. The exhaust valves 19a, 19b face outwardly of the banks and each bank has its own exhaust cam-shaft 20a, 20b and manifold 22a, 22b. Sparking plugs or fuel injectors 23a, 23b are disposed between the inlet and exhaust valves and the various parts are enclosed in casings 18, 24a, 24b, 21a., 21b.
Patent GB-1175102-A (GB)
Title: Pest Repelling System
Inventor: SHAW TANYA BOWMAN
IPC: A01M29/16
Filed: 1967-02-13
Abstract: 1,175,102. Acoustic signalling. T. B. SHAW. 13 Feb., 1967, No. 6836/67. Heading G4F. [Also in Divisions A1 and H4] A pest repelling system (Fig. 1) comprises spaced transducers 20, 22 &c., for emitting audio frequency energy, an electrical signal generator 10, an amplifier 14, and a gate 12 arranged intermittently and automatically to interrupt delivery of signals by the amplifier 14 to supply bursts of signal energy to the transducers 20, 22 &c. Circuit.-The oscillator 10 comprises two transistors 38, 50 (Fig. 2) and a feed-back path through series connected resistor 60 and capacitor 62. An adjustable inductor 40 and a capacitor 42 are provided. The output is supplied to an amplifier stage 68 through an astable multivibrator (12) comprising NPN transistors 70, 72 alternately switched on and off for gating periods of approximately two seconds. The amplifier 14 (Fig. 1) includes an amplifier stage 68 and a mixer amplifier stage 108 added to the stage 68 in order to supply the drive signals supplied to the output amplifier of an expanded system. A switch assembly 110 in one position connects the output of transistor 68 to transistor 104 in a driver circuit 16 and in the other position disconnects the output of the transistor 94 from the transistor 104 and connects it to the transistor 106. A transformer 124 has a plurality of secondaries 126 operative to feed a plurality of driver components with a driver signal similar to that of the driver circuit 16. The driver circuit 16 includes an output transformer 128 (Fig. 2a) coupled, through a capacitor 130, to the emitter of transistor 104. Associated with each driver circuit 16 is an amplifier 18 comprising class B operating transistors 132, 134. The amplifier 18 is rendered operative by closing a switch 150 associated with the transducer jacks 152, 154 and thereby rendering a resistor 148 effective. The jacks 152, 154 are respectively in parallel with the secondary 156 of an output transformer associated with an amplifier stage 24 including transistors 160, 162. A voltage is applied to interconnected centre taps of the transformers by closing a switch 170 on plugging into the jack 154 so as to render amplifier stage 24 operative. At the same time voltage will be supplied to a pilot lamp 172. The output transformer 140 has three secondaries 166 to which similar output amplifier stages 24 are connected and a secondary winding section 174 to which a pair of parallel connected transducers 20, 22 are connected.
Patent GB-307352-A (GB)
IPC: H01R33/76
Filed: 1929-03-04
Abstract: 307,352. Brandes, Ltd., (Assignees of White, C. D.). March 5, 1928, [Convention date]. Vacuum tubes.-Electric connection is made at several points along the lengths of the pins of a thermionic valve by resilient side-wiping contacts. In one example, a spring contact, for use in a five-pin valve socket, comprises a flat central portion 5 and two bent portions 9, 11 and is secured to an insulating base 1 by an eyelet rivet 8 passing through an aperture in the portion 5, which carries a lug 6 extending into the base. The portion 9 carries a U-shaped lug 10 to facilitate connection of the contact to a lead. Rounded faces 13, 15 are provided on the portion 11 and on an extending tongue 12 outstruck therefrom for contacting tangentially with the surface of a valve pin 4, the arm 11 being forced inwards as the pin is inserted.
Patent GB-1202714-A (GB)
Title: Switched lamp units
Inventor: LITTLE PHILLIP VERNON
IPC: B60Q3/02
Filed: 1967-02-14
Abstract: 1,202,714. Lighting closed compartments. JOSEPH LUCAS (INDUSTRIES) Ltd. 2 Feb., 1968 [14 Feb., 1968], No. 7006/67. Heading F4R. [Also in Division H1] A lamp unit for illuminating a compartment closed by a lid when the lid is open comprises an elongated, hollow, non-opaque body 12, a bulb holder 18 closing one end of body 12, a slidable switch contact 14 closing the other end of body 12 and electrically connected to the bulb casing, resilient means 15 urging contact 14 to a position to complete a circuit to the bulb and an electrically insulating part 17 which in use is engaged by the lid of the compartment when the lid is shut to move contact 14 to a position in which the circuit to bulb 19 is is broken. As shown spring 15 rests against projections 16 and the circuit between contact 14 and bulb holder 18 is via a conductive strip 22. The electrical circuit is completed from bulb holder 18 through strip 22, contact 14. bezel 13 and panel 11 to earth. In an alternative embodiment (Fig. 2, not shown) the rear end of spring 15 rests in a cup-shaped part which rests against the bulb holder 18 and the circuit between holder 18 and contact 14 is via the spring 15 and the unit is retained in position in panel 11 by a spring steel fixing clip.
Patent GB-525931-A (GB)
Title: Improvements relating to electrical filter networks
IPC: H03H9/54
Filed: 1939-03-03
Abstract: 525,931. Filter circuits. SIEMENS BROS. & CO., Ltd., and REED, M. March 3, 1939, No. 7019. [Class 40 (iii)] In a filter section comprising a pair of arms, each of which comprises a piezo electric crystal EP, EQ in series with one or more impedance elements LP, LQ, connected at one end to a common point of low or zero potential with respect to earth and at the other to a tapped transformer or a pair of transformers, the whole forming a network equivalent to a lattice section, the components of the arms are so arranged and screened that a stray capacity at a point remote from the common point becomes in effect a definite capacity between a point on the arm and the common point. Thus in the arrangement shown the capacity between the screen SA of the inductance LP and the screen SC of the whole arm forms a definite capacity across EP and can be taken account of in fixing the value of the condenser CP. In a modification, Fig. 2 (not shown), in which the larger screens are omitted the screen SA is connected to the common point instead of to the point J.
Patent GB-1344433-A (GB)
Title: Bonding a sealant to masonry surfaces
IPC: C08L15/02
Filed: 1972-02-15
Abstract: 1344433 Coated products THIOKOL CHEMICAL CORP 15 Feb 1972 [18 March 1971] 7023/72 Heading B2E [Also in Division C3] A sealant is bonded to a masonry surface by applying to the surface a coating of a primer consisting essentially of a volatile organic solvent solution of a chlorinated rubber and a poly (C 1  to C 4 -alkyl methacrylate), evaporating the solvent from said primer, applying to the primed surface a sealant composition comprising a liquid polysulphide polymer and curing said sealant composition in situ. Examples are given in which a concrete surface is coated with a primer consisting of chlorinated rubber, poly(n-butyl methacrylate), toluene, ethylene glycol ethyl ether acetate and other hydrocarbon solvent and a bead of sealant composition containing liquid polysulphide polymer, fillers, plasticizers and curing agents is applied to the primed surface and cured.
Patent GB-234031-A (GB)
Title: Improvements in and relating to watch wristlet straps
IPC: A44C5/14
Filed: 1925-03-16
Abstract: 234,031. Bowen, R. M. March 16, 1925. Hooks, spring, safety, and closed.-A device for attaching a strap s to the loops b of a wristlet watch comprises a hook c, to which the strap is attached. bent up into a U or V shape and having inwardly projecting resilient tongues b<1> at the ends of its limbs. The loop b of the watch is passed between these tongues b' and cannot be retracted unless the tongues are forced apart by a tool.