baber/WOPTO huggingface dataset:
Patent GB-528893-A (GB)
Title: Improvements in or relating to circuits for the amplification and/or frequency-changing of electric osciallations
IPC: F24F6/06
Filed: 1939-05-16
Abstract: 528,893. Valve circuits for wireless reception. PHILIPS LAMPS, Ltd. May 16, 1939, No. 14647. Convention date, May 19, 1938. [Class 40 (v)] In an amplifier or frequency-changer in which gain control is effected by variation of mutual conductance and in which negative feed-back is provided, the feed-tack is taken from one or more current-carrying electrodes of a valve for which the alternating current increases or at least remains constant when the gain of that valve decreases. In the radio frequency amplifier, Fig. 1, the feed-back resistance 18 is in the circuit of grid 4 only, the anode and screen grid 6 being directly connected to the cathode, for high frequencies, over condenser 17. Volume control potentials are applied over lead 20 to a grid 5 between the anode and grid 4 so that increase of negative potential on lead 20 will cause an increase of current from grid 4 and therefore an increase of feed-back instead of the decrease which is produced when the feed-back is from the anode. Part of resistance 18 provides bias for the signal grid 3. In a valve in which grids 4 and 6 are connected together within the tube, Fig. 2 (not shown), feed back is obtained by coupling a coil in the circuit of these grids, in parallel with a resistance, to a coil connected between the signal grid 3 and oscillatory circuit 11, 12. Fig. 3 shows a frequency-changer with the feed-back obtained from the second grid 33 and local oscillations from a separate oscillator 42 fed inductively between the fifth grid 36 and the cathode. Negative bias for the signal grid 32 is obtained from a resistance 47 in series with a high-frequency choke 46 connected across the feed-back resistance 18. The current distribution between grids 4, Fig. 1, or 33, Fig. 3, and the other current-carrying electrodes of the valve, produced by the volume-control bias should be independent of the voltage of the signal grid. This may be achieved by proper choice of valve and bias potentials or by feeding part of the input signal voltage to the gain-control grid by connecting this grid to a point on the oscillatory circuit 11, 12 instead of over condenser 21 to the cathode. To obtain a feed-back which is substantially independent of the gain-control voltage, Fig. 4 (not shown), the feed-back impedance has passing through it current from all the current-carrying electrodes (anode and screen-grids). This arrangement can be used as a frequency-changer by connecting inductance 43, Fig. 3, between the gain-control grid and the junction of resistance 22 and condenser 21, Fig. 1. The invention is also applicable to low-frequency amplifiers.
Patent GB-829929-A (GB)
Title: Improvements in or relating to the decontamination of oil-contaminated metal foils, sheet or strip
IPC: C23G5/00
Filed: 1957-05-08
Abstract: Oil contaminated electrically conductive strip &c. is cleaned by subjecting it to a non-disruptive electrical discharge using an A.C. supply connected so that the strip forms one electrode.
Patent GB-856661-A (GB)
Title: A fastener device for attaching an article to a support
IPC: F16B5/04
Filed: 1958-05-07
Abstract: 856,661. Clip fastenings; screw fastenings. UNITED-CARR FASTENER CORPORATION. May 7, 1958 [May 23, 1957], No. 14682/58. Class 44. A fastener device for securing, e.g. a liner 14 to a structural member 12 attached to ar aeroplane body 10 consists of a shank 20 with a laterally enlarged head 22 to engage an open-ended slot, &c. 22 in a strip of resilient metal which is bent to provide a yieldable loop 32, 34 having a terminal portion 36; the latter bears normally on the rear face of the head 22 but may be made to engage the member 12 as shown. The shank is internally threaded to receive a screw 24 for attachment of the liner 14. The shank 20, head 22 and screw 24 may be made of non-metallic material, e.g. nylon.
Patent GB-385205-A (GB)
Title: Improvements in fuel injector nozzles for internal combustion engines
IPC: F02M61/02
Filed: 1932-05-24
Abstract: 385,205. Oil engines. FUSIONMOTEURS, Boulevard GalliÚni, Malmaison, Rueil, Seine-et-Oise, France. May 24, 1932, No. 14704. Convention date, May 29, 1931. [Class 7 (iii).] A nozzle for a fuel injector for an internalcombustion engine comprises at least two superposed elements a<1>, a<2> which lie in contact along their faces except for a longitudinal groove which communicates at the nozzle end with a recessed portion leaving a small jet passage into which fuel is fed from the other end of the injector. The contacting surfaces may be plane or curved. The recesses comprise in each element a groove e which extends almost to the conical end thereof where the element is cut away to form a depression f communicating with the groove either directly, through a transverse channel k, or through inclined passages. In a modification, the depressed portion is not used and the groove e leads into converging channels adapted to make the fuel jets impinge on each other outside the nozzle. As shown in Fig. 7, the element a<2> is formed with an oblique end and is pivoted to the element a<1>, the channel e passing around the pivot pin l. In use, the elements are disposed in an outer socket member, having one end coned internally to receive their coned end, and clamped therein by a screw cap, which also secures the end of the fuel inlet pipe to the nozzle.
Patent GB-237567-A (GB)
Title: Improvements in the process for the preliminary treatment of cellulose prior to esterification
IPC: C08B3/00
Filed: 1925-06-05
Abstract: The esterification of cellulose is facilitated by a preliminary treatment of the cellulose with a small amount of acetic acid such that there is formed with the moisture, present in the cellulose an acid of 60-90 per cent strength preferably of 70-85 per cent strength.  The treatment is applicable to celluloses that have been treated with alkaline liquors, such as mercerized cellulose, or wood cellulose extracted by the soda process, or cellulose that has bleached by alkaline bleaching-agents.  The cellulose moistened with acid is either stirred or allowed to stand; a temperature below 30 DEG  C. is adequate.  In examples mercerized cotton is gently stirred with 11 per cent of its weight of acetic acid for 2 hours, then treated with an excess of acetic acid containing 0.5 per cent sulphuric acid at 45 DEG  C., and subsequently acetic anhydride added and the temperature maintained at 50-60 DEG  C.; wood paste purified by treatment with strong caustic soda solution, is moistened with one fifth of its weight of acetic acid and allowed to stand for 20 hours, then dipped into a mixture of acetic acid and acetic anhydride, and sulphuric acid added, the temperature being allowed to rise to 60 DEG C.; one part of cotton which has been bleached by sodium hypochlorite, is moistened with 0.17 parts of acetic acid and gently stirred for 2 hours, after which an excess of acetic acid is added, and subsequently a mixture of acetic anhydride and sulphuric acid, the temperature being maintained at 20 DEG  C., and finally a further quantity of acetic anhydride, after which the temperature is raised to 55 DEG  C.
Patent GB-1492007-A (GB)
Title: Window regulator mechanism
IPC: E05F11/42
Filed: 1976-04-12
Abstract: 1492007 Window winding mechanism GENERAL MOTORS CORP 12 April 1976 [9 May 1975] 14773/76 Heading E2M In a window regulating mechanism for motor vehicles a slidable window pane 12 is located at its bottom edge on a bracket 20 which is slidable on a track 24 when an actuator means 18, including a ring gear 86, meshes with a portion of a perforated plastics tape 26 to move the tape within the track 24 to raise and lower the window pane. The  actuator means 18 includes a window winder operating through a clutch and gear assembly 80 to drive the ring gear 86.
Patent GB-296739-A (GB)
Title: Improvements in collars for personal wear
IPC: A41B3/02
Filed: 1927-06-07
Abstract: 296,739. Hawes, R. M. June 7, 1927. Collars, linen and like. -The tabs e are cut away at b to the rear of the meeting edges g of the flaps a to enable the tie to lie more snugly, and, in the case of soft collars, to allow the tabs to be passed behind loops d on the inner sides of the flaps. Separate tabs may be provided on the neck band b for this purpose and the loops may be replaced by slots in the flaps.
Patent GB-859301-A (GB)
Title: Improvements in and relating to connector devices
Inventor: PARKIN LESLIE
IPC: F16C1/14
Filed: 1958-05-09
Abstract: 859,301. Clamps, stud and socket fastenings; bolts; cleats. CARR FASTENER CO. Ltd. April 30, 1959 [May 9, 1958; June 17, 1958], Nos. 15008/58 and 19359/58. Classes 44, 89(1) and 109. A connector device comprises a base having an aperture for receiving and frictionally gripping the end of a rod, a pair of resilient relatively movable arms connected with the base in opposed relation, at least one projection extending inwardly from each arm in substantially parallel relation to each other, each projection having an edge portion for engaging a cable or rod to be inserted therebetween, the arms being relatively movable into a position wherein the edge portions are urged into rod or cable engaging position. As shown in Fig. 2 of the first Provisional Specification the projections 3 are at the end of each arm 2 and each projection has an aperture 7 which provide the edge portions for engaging a head on the rod, the apertures being overlapped for this purpose. The apertures can be circular as shown or can be of keyhole shape. The aperture in the base 1 has a plurality of tongues 6 for gripping a cable or rod. In the embodiment shown in Fig. 2 of the Complete Specification each arm 2a, 2b is provided with two projections 8, 9, 10, 12 the projection 8 having an aperture 8a through which a cable extends and the remaining projections each being formed with a V-shaped notch so that when the arms are pressed together the cable is kinked. The arms 2a, 2b are held together by latch arms 13 which extend from the arm 2b and engage slots in the arm 2a. The aperture in the base 1a is provided with two tongues 6a for engaging the rod. In a modification of this construction the projection 12 is omitted; in such a case the rod is provided with an end fitting having a groove or. recess for engagement by the projections.
Patent GB-121978-A (GB)
Title: Improvements in Multiple-way Stop-valves.
Inventor: DEWRANCE JOHN
IPC: F16K11/16
Filed: 1917-10-18
Abstract: 121,978. Dewrance, J. Oct. 18, 1917. Multiple-way valves; locking- catches.-A multiple-way stop valve for connecting or disconnecting two or more of a series of vessels, as for example, for optionally connecting a petrol storage tank with a carburettor or with a service tank, or the latter with a carburettor, comprises a central chamber A with lateral branches B, all in the same plane, and each fitted with a spring- loaded valve C. A cam D, having an operative projection for each valve, is operated by a handle E having an arm or finger corresponding to each operative cam portion so as to indicate its position. The cam stem D<1> is fitted with a spring- pressed ridged plate F co-acting with ridges on a cover-plate A<1> so as to indicate by a series of clicks or jerks the position to which the valve is adjusted. In a modification, Fig. 4, a substitute in the form of a spring-pressed ball G, or a plunger G<2>, mounted in the handle E, is used. An open branch B<3>, with passages H, is arranged axially, as desired.
Patent GB-1400642-A (GB)
Title: Extrusion dies
IPC: B21D37/00
Filed: 1973-03-29
Abstract: 1400642 Extrusion SWISS ALUMINIUM Ltd 29 March 1973 [30 March 1972] 15190/73 Heading B3P An extrusion die has a working surface provided with a layer 30, Fig. 3, of diffusion products of the die material, a coating 31 of a binder with one or more metallic materials or one or more solid lubricants and coolant passages 21, 25, Fig. 1, in thermal contact with the working surface. The die comprises an insert 15 which may be integral with a sleeve 11 and a core 12. Both the insert and the core have coated working surfaces. The diffusion is produced by nitriding, bonding or both. In the latter case the nitride forms the inner layer of a composite nitride-boride layer, Fig. 4 (not shown). The binder is inorganic and the solid lubricant may be graphite and/or molybdenum disulphide. Liquid nitrogen is used as the coolant and in its gaseous form discharges from outlets 25 to form a protective inert atmosphere around the extruded product which may be an aluminium alloy.
Patent GB-1509794-A (GB)
Title: Magnetic embossable label tape laminate
IPC: C09J7/10
Filed: 1975-04-14
Abstract: 1509794 Coated magnetic label tape MINNESOTA MINING & MFG CO 14 April 1975 [15 April 1974] 15247/75 Heading B2E [Also in Division B5] An embossable laminated label tape of thickness 250 - 800 micrometres comprises a substrate (i)-(iii), made up of (i) a transparent or translucent plastics layer which opacifies under deforming stresses, e.g. rigid unplastioised polyvinyl chloride, bonded by (ii) an adhesive layer, e.g. acrylic pressuresensitive adhesive, to (iii) a magnetisable layer containing permanent magnet particles and up to 40wt.% non - magnetic binder, e.g. rubber or resin, and having a modulus of elasticity in tension of 0.1-1.0 Î 10<SP>5</SP>psi and a BH max of at least 0.7 Î 10<SP>6</SP> gauso-oersteds perpendicular to its major faces, on which is coated (iv) a rubber or plastics base layer of tensile strength 1500-6500psi and elongation 1-75%, individual layer thicknesses in micrometers being (i) 25-250, (ii) 10-100, (iii) 200- 750, and (iv) 1-20. The layer (iii) may be made by calendering a sheet of berium ferrite platelets in an ethylene - propylene - diene rubber and curing the rubber. The layers (i) and (ii) may be transparent and either colourless or coloured, so that layer (iii) provides background colour; alternatively an opaque coloured layer (v), e.g. a vinyl ink of thickness 10-20 micrometres may be provided between layers (i) and (ii). Layer (i) may be protected by a tough pilasticised vinyl resin overlay. In an example, a layer (i) is coated with ink (v) and adhesive (ii), each coating being dried after application. and laminated with a layer (iii) by a hand roller. The layer (iii) is then coated with a layer (iv) of a plasticiser - containing solution of vinyl chloride - vinyl acetate - dibasic acid copolymer a cross linked acrylic emulsion or a wax polish. The product is magnetised and slit lengthwise to form label tapes. Information as to certain of the constituents is given in USA Specifications 3468744 and 2999275.
Patent GB-1464878-A (GB)
Title: Salts of 2,6-dioxocyclohexane thiocarboxylic acid 4-halo- anilides and pharmaceutical compositions thereof
IPC: C07C/
Filed: 1974-04-05
Abstract: 1464878 Salts of 2,6-dioxocyclohexane thiocarboxylic acid anilides HOECHST AG 5 April 1974 [7 April 1973] 15248/74 Heading C2C The invention comprises novel alkali or alkaline earth metal salts of compounds (I) (X is halogen). Pharmaceutical preparations active against cutaneous fungi contain the salts as active ingredient. Dry compositions or aqueous solutions of the salts are preferred forms of administration.
Patent GB-357601-A (GB)
Title: Improvements in and relating to presses
IPC: B30B1/24
Filed: 1930-05-19
Abstract: 357,601. Mechanical presses. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London. -(Terkelsen, A.; 12, Bradford Road, Newton, Massachusetts, U.S.A.) May 19, 1930, No. 15397. [Class 87 (ii).] A press comprises a ram and a resiliently supported bed, said ram being controlled by manually adjustable means coacting with means for automatically controlling its movement in dependence upon the amount of pressure exerted, the ram and bed being retained in position when their relative movement is stopped. The bed 15 is secured by adjustable nuts 19 on four posts 18 which are resiliently supported by springs 22 bearing against the adjustable collars 24. The ram 16 is carried by the double rack 27 which is driven by the electric motor M through the train of gears 28, 40. The motor M is a three-phase alternating current motor supplied by feed lines L1, L2, L3 and controlled by a reversing switch R which is provided with two triple-pole, magnetically operated, contactors a, b. The contactor a comprises a pivoted member carrying an armature 110 which co-operates with the coil 61 to close the switch. An electric interlock e is provided to close the operating circuit. The contactors a, b are mechanically interlocked by the bar 117. The motor circuit is controlled by " up," " down," and " stop " switches 80, 81, 82 and also by two automatic limit switches A, B. By pressing the " up " switch 80 the circuit shown in full lines, Fig. 3, is closed and the coil 61 energized to close the contactor a and start the motor M. The interlock e is also closed to keep the coil 61 energized. When either the limit switch A or the " stop " switch 82 are opened the contactor a and interlock e will open and stop the motor. The " down " switch 81 closes the circuit shown in dot and dash lines, Fig. 3, and reverses the motor by means of the contactor b. The armature shaft 42 of the motor is provided with a solenoid brake 54 which is applied when the motor circuit is opened. The limit switch B has a trip arm 26 which is engaged by a lug 43, adjustably carried on the ram 16, when the ram descends. The trip arm 26 of the switch A is engaged by an adjustable slide 47 carried on one of the posts 18 so that the switch A is opened when the bed yields. A scale 49 may be provided to regulate the limiting pressure. The switch A may also be opened by the lug 43 contacting with a projection 53 upon excessive upward movement of the ram. A pressure indicator is provided, comprising a dial 120 carried by the post 18 over which moves a pointer 123 which is rotated by the rack and pinion 124.
Patent GB-419925-A (GB)
Title: Improvements in and relating to apparatus for cutting vertically drawn glass strip
IPC: C03B33/02
Filed: 1934-05-23
Abstract: 419,925. Glass manufacture. CLEMO, F. A., 9, Kingsway, London.-(Naamlooze Vennootschap Hollandsche Maatschappij voor de Vervaardiging van Glas ; 104, Weteringschans, Amsterdam.) May 23, 1934, No. 15406. [Class 56.] Apparatus for cutting lengths from a vertically-drawn sheet of glass comprises a bar situated on one side of the glass and serving as a guide for a cutting tool, a bar on the other side to take the pressure of the tool, means for causing the two bars to grip the glass and move with it until a cut has been made, and means for ensuring that the cutting-guide is accurately horizontal before the bars grip the strip. The bars 1, 2 are pivoted to end members 4 which are suspended by cables 10 carrying counterweights 13 and are provided with rollers 9 that engage vertical guides 8. The weights 13 are arranged to allow the bars to descend quickly when they release the glass sheet 3. Each end member 4 carries a solenoid 15 that moves a plunger 17, and the plunger is pivoted to bell-crank levers 19 so arranged that the bars 1, 2 are caused to grip the glass sheet when the plunger is drawn upwards. The bar 1 is provided with a cutting-guide 25 which can be adjusted vertically by means of screws until it is accurately horizontal when the end members 4 rest on stops 14. The circuit of the solenoid 15 may be controlled by a hand-operated switch, and the glass may be scored by a cutter which is drawn along the guide by hand, but preferably these operations are performed automatically. For this purpose, rods 29 attached to the end members 4 support a crossbar 31 which carries a switch 33 included in the circuit of the solenoid. When the glass has risen to the desired height, its upper edge closes the switch and causes the gars 1, 2 to grip and move with the glass. On removal of the cut length of glass, the switch opens and the bars separate and descend to their position of rest. The gripping of the bars may also be effected by fluid pressure, instead of the solenoid 15, the fluid valve being actuated electrically or by hand. The cutting-device may also be drawn along the bar 1 by means of an electric motor, the carriage of the cutter operating a reversing switch at each end of the bar. A switch for setting the cutter in motion is secured to one of the vertical guides 8 and is actuated immediately after the bars begin to rise with the glass.
Patent GB-102374-A (GB)
Title: Improvements in or relating to Rotary Light Signal Apparatus.
Filed: 1916-10-30
Abstract: 102,374. Svenska Aktiebolaget Gasaccumulator. Nov. 22, 1915, [Convention date]. Mixing fluids in flow.-In rotary signal apparatus, such as lens apparatus, operated by the illuminating-gas acting through diaphragm apparatus, the diaphragm apparatus also effects the mixture of gas and air. In one form, in which the diaphragm apparatus is of the type described in Specification 30197/10, an inner diaphragm chamber 4 is provided with an inlet 5 and an outlet 6 alternately opened and closed as the diaphragm 13 falls and rises, the gas passing from the chamber 4 to an outer diaphragm chamber 7 provided with an air inlet 8. The diaphragms 13, 14 of the chambers 4, 7 are connected together so that air is drawn into the chamber 7 while the diaphragm 14 is rising, and the mixture is forced, during the falling of the diaphragm 14 under the influence of a spring 15, through an outlet 9 to an accummulator chamber 10, and thence to the burner head.
Patent GB-1469404-A (GB)
Title: Holders for needles and like articles
IPC: B65D75/36
Filed: 1974-05-22
Abstract: 1469404 Packages; needle &c holders NEEDLE INDUSTRIES Ltd 22 May 1974 [30 March 1973 15 Nov 1973] 15539/73 and 52965/73 Addition to 1169244 Headings B8C and B8P A holder for one or more articles, e.g. needles 27, as disclosed in the main patent and comprising a cover 14 which is formed as a hollow transparent shell, a base member 30 and mounting means for the needles, is modified in several respects. In one embodiment of the holder, Fig. 1, the mounting means comprises a mounting member 24 of cloth which is backed by a sheet (28), Fig. 3 (not shown), and engaged with the back of the base member 30 so as to project through an opening 23 therein. In a second embodiment, Fig. 4 (not shown), the mounting means comprises a portion (115) of corrugated, paper backed cloth which is attached at one end only between marginal portions of the base member and the cover. In this second embodiment a first portion (120) of the cover member accommodates the needles and a second cover member portion (119) which is of less depth than the first portion (120) can accommodate an instruction leaflet. In a third embodiment, Fig. 6 (not shown), the base member 210 is cut and folded to produce a transverse corrugation in which the needles can be mounted.
Patent GB-515154-A (GB)
Title: Improvements in electric discharge lamps
IPC: H01J61/42
Filed: 1938-05-25
Abstract: 515,154. Discharge lamps. GENERAL ELECTRIC CO., Ltd., and JENKINS, H. G. May 25, 1938, No. 15616. [Class 39 (i)] Means for producing light comprises (1) one or more low-pressure mercury-vapour discharge devices, (2) luminescent zinc-beryllium silicate activated by manganese and (3) luminescent magnesium or zinc tungstate or both, the light from (2) and (3) when excited by (1) (and possibly from (1) itself) being mixed so as to produce light falling within a specified area of a trichroinatic diagram, which is stated to contain all known approximations to daylight. When the ratio of the fluxes from (3) and (2) is about 1.9 a close approximation to carbon dioxide light is obtained, when the manganese forms 2.75 per cent. of (2); warmer or colder light may be obtained by decreasing or increasing this ratio. The materials may be mixed and coated on the inside of a single discharge tube, equal weights giving the above optimum ratio; or separate tubes may be coated with each material. Specifications 469,732, 469,913, 480,356 and 495,706, [both in Group XX], are referred to.