baber/WOPTO huggingface dataset:
Patent GB-607561-A (GB)
Title: A contrast-control system for the electro-acoustic transmission of sound
IPC: H03G7/02
Filed: 1946-02-08
Abstract: 607,561. Automatic gain control. ELECTRICAL FONO-FILMS CO. AKTIESELSKAB. Feb. 8, 1946, No. 3988. Convention date, Aug. 13, 1942. [Class 40 (v)] In an automatic gain control system for volume-compression or the like in electroacoustic transmission, the control voltage, which is a function of the audio-frequency amplitude, is made to be a function of frequency also, so as to preserve the relative subjective intensities of the sounds as heard; and the threshold amplitude at which the control comes into operation depends on frequency. The isophons P, Fig. 1, show the relation between frequency (abscissµ) and intensity of stimulus (ordinates) for sounds of equal subjective loudness. The datum level 0 for the ordinates is the threshold of audibility at the standard frequency 1000 c/s. On the Weber- Fechner assumption the intersections of any ordinate with successive isophons are equally spaced, and in volume-compressor according to the invention the isophons after compression remain equally spaced but with reduced intervals, Fig. 2 (not shown). If the control voltage is to be the same for all frequencies at the mean isophon, viz. 55 phons, and if the compressor comes into operation when a threshold of 20 lb. is reached, the amplitudes must be distorted by the difference between the curve A1 and the horizontal line at 20 lb., the curve Al being the mirror image of the curve A0, which is drawn through the point (1000, 20) and parallel to the mean isophon 55. The speech current is applied at A to an amplifier F1 which feeds a control amplifier R containing an exponential valve whose amplification factor is controlled by rectified voltage derived through a rectifying circuit and a network C2, R2, having a frequency characteristic similar to that shown by the curve A1. Specification 513,528 is referred to.
Patent GB-633268-A (GB)
Title: Work-cutting mechanisms for sewing machines
IPC: D05B73/12
Filed: 1948-02-11
Abstract: 633,268. Hinges. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Feb. 11, 1948, No. 3996. [Class 65 (ii)] [Also in Group VII] A hinge-pin 43 forming a connection between members 34, 35 and 46 of a sewing-machine mechanism is rigid with a slide 44 which engages in an undercut guide channel in the member 46 and is adjustably secured therein by a nut 48 on a stud on the slide.
Patent GB-1174643-A (GB)
Title: Improvements in Dynodes
IPC: C03C3/247
Filed: 1967-01-26
Abstract: 1,174,643. Cathode constructions and materials. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 26 Jan., 1967 [29 Jan., 1966; 13 Sept., 1966], No. 4013/67. Heading HID. [Also in Division C1] A dynode has an electrically conducting secondary emitting surface which consists essentially of, in percentages by weight: V 2 O 5  30-80; P 2 O 5  5-22; Sb 2 O 3  0-20; As 2 O 3  0-6; PbO 0-14; BaO 0-5; CaO 0-2; Bi 2 O 3  0-25; B 2 O 3  0-28À5; F calculated as CaF 2  0-4 and wherein (V 2 O 5  + P 2 O 5 ) 45-95; (As 2 O 3  + Sb 2 O 3 ) 1À5-22; and (P 2 O 5  + B 2 O 3  + As 2 O 3  + Sb 2 O 3 ) 18-35. The dynode is formed by coating with a glass within the above ranges a tube of glass of the following composition: SiO 2  56À2; Na 2 O 7À6; K 2 O 4À5; PbO 30À0; Al 2 O 3  1À2; Sb 2 O 3  0À3; MnO 0À2, the coating glass being used in a suspension of nitrocellulose in amyl acetate to coat the inside. The tube is then drawn to a final external diameter of 1 mm. and wound to form a helix, or alternatively further drawn to external diameter 40-200 Á. A number of these small tubes assembled in a jig under pressure to fuse the tubes to form a multi-channelled dynode.
Patent GB-180971-A (GB)
Title: Improvement in toe-protectors for boots and shoes
IPC: A43C13/14
Filed: 1922-02-11
Abstract: 180,971. Harbidge, T. W. Feb. 11, 1922. Uppers, protectors for.-A detachable toe protector B is constructed of spring steel with sides A which clip in the inseam and just under the sole, slits a being provided on the underside to allow for expansion.
Patent GB-434804-A (GB)
Title: Improvements in devices for facilitating drawing
IPC: B43L13/20
Filed: 1934-02-07
Abstract: 434,804. Drawing-appliances. WOLF, E., 25, Glendale Gardens, Wembley, Middlesex, and COOPER, L. N., 34, Great James Street, Bedford Row, London. Feb. 7, 1934, No. 4081. [Class 11] [See also Group XVI] A device to be used as an aid to drawing comprises one or more templets or stencils, each of which is composed of a large number of variants of one or more elements of a complete design, at least three of such elements being combined to form the complete design. The device may comprise a number of profiles of noses, lips and jaws, and skulls cut along the edges A, B, C respectively of a cardboard sheet, while in the body of the sheet at D are cut outlines of eyes and ears. Any of these outlines may be selected and combined to form a complete face, a pencil being moved along the selected outline after this has been suitably positioned on the paper upon which the drawing is being made. Specification 191,484, [Class 11], is referred to.
Patent GB-510193-A (GB)
Title: Improved dart
IPC: F42B6/00
Filed: 1938-02-11
Abstract: 510,193. Darts. SMITH & SON, REDDITCH, Ltd., J., and LILLEY, A. R. Feb. 11, 1938, No. 4276. [Class 132 (iii)] The point c of a dart is received within a split sleeve g extending forwardly from the body b, the sleeve being tapered and externally screwed to co-operate with a clamping nut i. The body may be provided with an enlarged grip portion f or may be surrounded by an ornamental sleeve of casein, synthetic resin or other material. A projection on the point may engage within a recess in the split sleeve, positively to connect the parts when the nut is applied. The usual flight a is screwed into the after end of the body.
Patent GB-607807-A (GB)
Title: Improvements relating to control arrangements for electric motors
IPC: H02P5/00
Filed: 1946-02-12
Abstract: 607,807. Motors. COSSOR, Ltd., A. C., LE BOUTILLIER, A., and DANIELSSON, E. Feb. 12, 1946, No. 4300. Drawings to Specification. [Class 35] [Also in Group XXXVII] A mixing or beating machine for domestic use comprises an electric driving motor and a control arrangement for the motor in which a worm on the motor spindle is displaced against a spring in accordance with the resisting torque to vary correspondingly the driving torque. The worm meshes with worm-wheels on opposite sides, whereby intermeshing paddles are driven and may be fast on the spindle and cause displacement of the rotor with regard to the stator.
Patent GB-754458-A (GB)
Title: Improvements in or relating to a centrifugal pump
Inventor: SMITH EDWARD MALCOLM
IPC: F04D9/00
Filed: 1954-02-15
Abstract: 754,458. Centrifugal pumps. GORMANRUPP INDUSTRIES, Inc. Feb. 15, 1954, No. 4391/54. Class 110(1) A centrifugal pump comprises a casing having a cylindrical wall with a peripheral outlet, a rear wall through which the impeller shaft extends, and a front wall having a central inlet; recess-forming means extending radially on the inner surface of the front wall and co-operating with the pump impeller to facilitate priming. The casing of the pump shown in Fig. 1 comprises a cylindrical wall 1 provided with an outlet 2, and an end wall 3 having a central inlet 4 and inclined at a small angle to the other end wall 5 so that the axial length of the pumping chamber is at a maximum adjacent the outlet 2 and at a minimum opposite the outlet. The wall 3 is provided with a recess 10 which extends radially from the inlet 4 to the wall 1 and comprises a surface 11 extending longitudinally of the pump and a surface 12 inclined inwardly in the direction of rotation of the impeller 7. As the impeller rotates, liquid drawn in from the inlet 4 is moved initially towards the point of minimum axial length, the convergence of the walls 3 and 5 causing the radial depth of the liquid to increase; and as the liquid is subsequently moved towards the outlet 2 the radial depth decreases, thereby creating a vacuum in the region of recess 10. Consequently, the liquid entrains air as it passes the recess 10, and carries it to the outlet 2, priming the pump. The end walls may be parallel, and the surfaces 10, 11 may be replaced by surfaces which project from the wall 3 instead of into it, forming a ridge with an inclined upstream surface and an axially-extending downstream surface; a vacuum is formed on the downstream side of the ridge. Fig. 5 shows an embodiment in which a spiral surface 20 begins and ends at a surface 21,. thereby forming a radilly-extending recess.
Patent GB-538666-A (GB)
Title: Improvements in and relating to releasable pipe joints as used in well drilling
IPC: F16L15/00
Filed: 1940-03-08
Abstract: 538,666. Pipe joints. CUTHILL, J., and OIL WELL ENGINEERING CO., Ltd. March 8, 1940, No. 4395. [Class 99 (i)] In an easily releasable screw joint for well-drilling strings the spigot 1 carries a sleeve 17 adapted for limited rotational movement on the spigot and having a bevelled end 19 engaging a seat 20 in the end of the socket 13. The abutting shoulders 9 of sleeve and spigot are inclined in the opposite direction to the screw threads. A pin 21 in the sleeve engages a helical groove 11 in the spigot and a spring 12 in the groove normally holds the step shoulders 10 in contact. In tightening the joint the shoulders 10 are separated on relative rotation of spigot and sleeve. On unscrewing, the action of the spring causes quick release of wedging action.
Patent GB-662460-A (GB)
Title: Process for the removal of carbon monoxide from a gas mixture containing carbon monoxide and nitric oxide
IPC: B01D53/62
Filed: 1949-02-17
Abstract: Carbon monoxide is removed from a gas mixture containing carbon monoxide and nitric oxide according to the equation 2CO + 2NO = 2CO2 + N2 by passing the gas mixture over an oxidation catalyst-a large number of which are specified-particularly platinum, vanadium pentoxide and Fe3 O4/Al2O3/K2O mixture, at a temperature of at least 350 DEG C. up to say 800 DEG C.
Patent GB-451781-A (GB)
Title: Improvements in or relating to abrasive wheels
IPC: B24D5/02
Filed: 1935-02-11
Abstract: An abrasive wheel having a porosity in excess of 50 per cent, and having no central hole, may have a ceramic, ruber, or resin bond and the porosity may be obtained by burning out a combustible filler, for example, coke, or by the development of gas in the abrasive mix during manufacture, for example, by the use of hydrogen peroxide.
Patent GB-136717-A (GB)
Title: Improvements in Books or Albums for Leaves or Flowers.
Inventor: BLACK WILLIAM GEORGE
IPC: B42F5/00
Filed: 1919-02-22
Abstract: 136,717. Black, W. G. Feb. 22, 1919. Picture and like mounts.-The leaves of albums for flowers, leaves, and sprays are divided into two parts a, b. The part a is slot to form bands c, through which the flowers or the like are threaded as shown. The part b is lined to receive a description of the flower or the like so held.
Patent GB-211694-A (GB)
Title: Improvements in and relating to portable electric lamps
IPC: F21L4/00
Filed: 1923-02-15
Abstract: 211,694. Zeiler, M. Feb. 15, 1923. Battery lamps.-In portable electric battery lamps in which the bulb is reversible so as to dispense with a separate switch, the bulb 4 is fitted into a plug 1 adapted to fit in either direction in a socket 17 embedded in the cast top of the battery, and the socket is connected by a conductor 18 to one pole of the battery, the other pole being connected to a conductor 13 lying between insulating-strips 14, 15 and adapted to contact with the central contact 5 of the bulb. Specifications 103,268 and 121,103 are referred to.
Patent GB-1377241-A (GB)
Title: Discrete and integrated latching-type circuit
IPC: B65D43/16
Filed: 1972-01-31
Abstract: 1377241 Transistor latch circuits WESCOM Inc 31 Jan 1972 [3 Feb 1971] 4520/72 Heading H3T [Also in Division HI] A regeneratively coupled pair of transistors 31, 32 is connected between terminals A and K, and T33 is arranged to by-pass one of the transistors T32 and to have an impedance which changes from a relatively high value when T31, T32 are first beginning to conduct to a relatively low value when they are latched into a fully conductive state. By this means an appreciable differential is. maintained between that current required to initially turn on T31, T32 and that required to raise their conductivity to a level where the reciprocal action holds them on. In one embodiment (Fig. 3, not shown) the second collector of T31 is omitted.
Patent GB-215846-A (GB)
Title: Improvements in inflating valves for pneumatic tubes of motor road vehicle tyres and the like
IPC: F16K15/20
Filed: 1923-02-17
Abstract: 215,846. McCourt, W. H. Feb. 17, 1923. Tyre valves. -A tyre valve has a spherical valve member 16 provided with h a stem mounted in a tapered coil spring 5 and adapted to engage a recessed seat formed on the end of a detachable nipple 7. The nipple is screwed into a recess 4 formed in the main casing 1 against a packing washer 9. The outer end of the nipple is screwed to receive the inflating p u m p or a closure cap 8. A dust cover 11 is adapted to screw on the main casing.
Patent GB-136394-A (GB)
Title: Improvements in or relating to Engine-starting Apparatus.
Inventor: BEERE WILLIAM JAMES EDWARD
IPC: F02N11/02
Filed: 1919-02-25
Abstract: 136,394. Beere, W. J. E. Feb. 25, 1919. Turning-gear. - An electric starter is of the kind described in Specification 1352/15, in which the armature is shifted axially by electro-magnetic means for bringing a pinion C into mesh with the toothed fly-wheel D, and in which the axial movement controls means for preventing the supply of current to the armature until the pinion meshes with the fly-wheel. The invention consists in providing the commutator E with an extension F of insulating-material, which is under the brushes G when the apparatus is out of action. The length of the extension is such that the pinion C meshes with the fly-wheel before the brushes make contact with the commutator. The circuits are controlled by a two-way switch J as described in the prior Specification. Reference has been directed by the Comptroller to Specification 143,324.
Patent GB-853261-A (GB)
Title: Improvements in or relating to the filling of liquids into transportable vessels
IPC: B67C7/00
Filed: 1959-02-12
Abstract: 853,261. Bottling. HOLSTEIN & KAPPERT MASCHINENFABRIK PHOENIX G.m.b.H. Feb. 12, 1959 [Feb. 14, 1958], No. 4925/59. Class 125(2). Bottles are filled and sealed by machines housed in a pressure chamber. The apparatus shown in plan in Fig. 2 comprises a washer and steriliser 1 from which bottles are fed on to conveyer 4 which carries them through a rotating air lock 12 into a pressurised chamber 7 containing a filling machine 2 and a sealing machine 3. They are then discharged through rotating air lock 13. The pressure is maintained in the chamber by a blower 8 and an air lock 15 is provided to enable an operator 9 to enter. The apparatus enables liquids to be filled at a temperature above their normal boiling point.
Patent GB-1346735-A (GB)
Title: Production of carbon sheet formations
IPC: H01M4/96
Filed: 1972-02-02
Abstract: 1346735 Carbon bodies SIGRI ELEKTROGRAPHIT GmbH 2 Feb 1972 [2 Feb 1971] 4940/72 Heading C1A Carbon bodies are formed by heating shaped bodies of cardboard, pasteboard, chipboard or plywood to at least 120‹ C., impregnating the so-heated body with a thermosetting synthetic resin, hardening the resin by heating the impregnated body to 150‹ to 250‹ C. and then further heating the body to at least 800‹ C. to achieve carbonization of the body and the impregnant. The body may be a corrugated sheet or a tube. The amount of impregnant used may be 200-500% by wt. of the cellulose containing structure. The preferred resins are phenol-formaldehyde, furan, alkyd or epoxy resins. The resin may contain a hardening catalyst which is an aryl sulphonate. The impregnation may be effected under pressure and particular heating schedules are given. Thicker bodies may be obtained by laminating several impregnated structures prior to carbonization.
Patent GB-622510-A (GB)
Title: A process for the manufacture of pentaenes
IPC: C07C11/00
Filed: 1947-02-20
Abstract: Pentaenes of the formula <FORM:0622510/IV (b)/1> wherein R=alkyl, aryl or an aralkyl radical, are obtained by condensing 4-(21.61.61-trimethyl cyclohexene-(11)-yl)-2-methyl-butene-(2)-al-(1) by a Grignard reaction with an ether of 1-hydroxy-3-methyl-pentene-(2)-yne-(4) and in optional sequence, partially hydrogenating, by the action of 1 mol. hydrogen, at the triple bond, and warning, preferably in the presence of an inert solvent, with a strong carboxylic acid, e.g. oxalic acid in dioxane, glycollic acid in toluene, phthalic acid in petroleum ether and aqueous formic acid, the ether of 1-hydroxy-3.7-dimethyl-6-hydroxy-9-trimethyl-cyclohexenyl -nonadiene - (2.7) - yne - (4) thus obtained.  As hydrogenation catalyst there may be used palladium calcium carbonate, palladium barium sulphate or palladized charcoal.  Detailed examples are given.  Specification 605,208 is referred to.
Patent GB-563000-A (GB)
Title: Improvements in or relating to metal doors and door frames
IPC: E06B7/232
Filed: 1943-03-29
Abstract: 563,000. Doors and door frames. TONKIN, S. W. S., and REBBECK, SIR F. E. March 29, 1943, No. 5012. [Class 20 (iii)] A steel or other metal door and door frame comprises a metal frame 10 to which is hinged a door consisting of a single steel plate 18, beaded at 19 on the top, bottom and hinge edges and formed with a resilient edge 21, which when the door is closed, presses on a tubular beading 11 on the door frame so as to form a rattle-proof closure. Stiffeners 14 are provided, and filling pieces 15 in the recesses formed by the stiffness afford a flush sealing for the lock 16.
Patent GB-173985-A (GB)
Title: Improvements in and relating to boots and shoes
IPC: A43B5/16
Filed: 1921-02-15
Abstract: 173,985. Hansell, W. H. Feb. 15, 1921. Studs, detachably applied.-A sole or heel a of leather or the like is punched with recessed holes to accommodate rubber studs b having flanges c. Balls d are placed on the studs and held in position by apertured plates e.
Patent GB-1092217-A (GB)
Title: Method for obtaining neutral reflecting glasses
IPC: C03C3/112
Filed: 1965-02-05
Abstract: A neutral reflecting glass is founded from a basic charge comprising SiO2, Al2O3, Na2CO3, HCO3, ZnO, Pb3O4, CaCO3, (NHa)H2PO4, and Na3AlF6 together with a reducing agent, the final glass being in the ranges in weight percentages of:-SiO2 50-60; Al2O3 5-10; Na2O 7.5-15; H2O tr.-10; ZnO 5-10; PbO 6-15; CaO tr.-5; P2O5 3-8 and F 5-12. The reducing agent is preferably charcoal and is present in from 0.008 to 0.5 parts per 100 parts by weight of the basic charge.  Ferric oxide may also be present in from 0.2 to 0.3 parts per 100.  A particular example of the basic charge is given.
Patent GB-788913-A (GB)
Title: Improvements in or relating to demountable structures for use in erecting arches, bridges and like structures
IPC: E01D19/04
Filed: 1953-02-24
Abstract: 788,913. Supports for arch centering. TICKNER, A. (Altet, V. R.). April 15, 1954 [Feb. 24, 1953], No. 5206/53. Class 20(2) [Also in Group XXX] One end of an arch centering is mounted on a pin 28, Fig. 3, on a support 17 movable along an elongated base 1 extending transversely to the length of the centering, by driving means, Fig. 1. The base 1 is a channel in which are blocks 5, 6, Fig. 1, both having spring ratchet plungers 12 adapted to engage apertures in the sides of the channel and connected together by a screw 7 rotation of which by a ratchet drive 9 alternately in opposite directions, moves first one block then the other in the same direction, the blocks acting as abutments for one another. A ring 10 on the block 5 is connected to the support 17 of frusto-conical form mounted on four balls 22 in spherical recesses on a base 19 movable along the base 1 and rotatable on ball bearings 15. The pin 28 is mounted on a bracket 27 having a mounting 24, 25, allowing universal movement on the support 17. Specifications 742,855, 788,911 and 788,912 is referred to.
Patent GB-130288-A (GB)
Title: Improvements in Electric Furnaces.
Inventor: MARRIOTT GEORGE
IPC: F27B3/12
Filed: 1919-03-03
Abstract: 130,288. Marriott, G. March 3, 1919. Electrode furnaces.-A hearth comprises a layer a of fine dolomite and tar, a covering b of asbestos millboard extending partly up the sides and around the doors and spout, and a copper or bronze plate c with a tail piece extending through the wall to which a supply conductor is connected; the plate c is surrounded by slightly higher magnesite bricks d, and is covered with graphite powder e to the level of the bricks. A single course f of magnesite bricks is built round the sides. Within the shell thus formed is packed a bed g about twelve inches thick composed of dolomite 60 per cent, magnesite 30 per cent, fine metal clippings 8 per cent, graphite 2 per cent, with a binding of tar. Above this is packed a second bed h six inches thick composed of dolomite 60 per cent, magnesite 30 per cent, metal clippings 10 per cent, and tar binding. Above this are sloping sides i composed of dolomite 60 per cent and magnesite 40 per cent. The upper walls are built of silica bricks k, resting on a layer j of fine chrome ore.
Patent GB-556815-A (GB)
Title: Improvements in or relating to the manufacture of ortho-esters
Filed: 1942-04-20
Abstract: 556,815. Trithioorthoesters. KENDALL, J. D. April 20, 1942, No. 5213. [Class 2 (iii)] Trithioorthoesters are prepared by reacting, in the presence of a strong dehydrating agent, an alkyl or aralkylmercaptan with a monocarboxylic acid, other than formic acid, or a monothioester thereof. Trithioorthoesters of polybasic carboxylic acids are prepared by starting with polycarboxylic acids in which each acid group is in the form of a monothioester group. The acid halides may also be used as starting material, three molecular proportions of mercaptan being used for each halide group. When making unsaturated trithioesters, the corresponding saturated acid halides containing groups which are readily removed are used. The latter groups are then split off after treatment with the mercaptan. In examples : (1) acetylchloride is reacted with ethylmercaptan in the presence of zinc chloride to give trithioethylorthoacetate ; (2) ethylmercaptan is similarly reacted with propionyl, benzoyl, succinyl, adipyl and malonyl chlorides ; (3) ethylthioacetate, prepared from acetylchloride and ethylmercaptan is reacted with benzylmercaptan ; (4) ethylmercaptan is reacted with #-chlorpropionyl chloride and the resulting trithioethyl-#-chlorpropionate treated with sodium alcoholate to give trithioethylortho acrylate. The products may be oxidized to sulphones.