baber/WOPTO huggingface dataset:
Patent GB-695920-A (GB)
Title: Fault protective arrangement for direct current systems
IPC: H02H3/28
Filed: 1951-08-24
Abstract: 695,920. Protective cut-out arrangements. BENDIX AVIATION CORPORATION. Aug. 24, 1951 [Sept. 13, 1950], No. 20026/51. Class 38 (v) An arrangement for protecting a D.C. power system comprises a single pair of iron-cored inductances arranged with each inductance adjacent a preselected point of the system so that unbalance of current flow will appear at these points in the event of a fault occurring in the system between said points, the cores being inductively coupled with the system and the inductances being connected in opposition so that if unbalance occurs a relay is operated to disconnect the system from the supply. In Fig. 6, the inductances 12, 13 are placed around the output leads 7, 8 of a generator 45, the primary windings 14, 16 being connected in series with an A.C. source and the secondary windings 15, 17 being reversely connected in series across the input terminals of a bridge rectified 85 feeding a relay 87. The relay contact 90 is normally open but on a fault occurring the coil 86 is energised to close the contact and short-circuit a resistance 69 connected in series with a relay coil 67 across the generator field winding 46. Coil 67 is thus energised to release a latch 81 so that contacts 50, 56 and 73 open. Contacts 50, 56 disconnect the fieldwinding and a carbon-pile regulator 53, and contacts 73 de-energise a coil 76 to open the main switch 78. The inductances may be placed at opposite ends of the line 7, Fig. 2, (not shown) and in series opposition Fig. 3, (not shown) so that on fault between them the D.C. flux in inductance 13 increases and induces a voltage pulse in windings 16, 17 which are connected in series, as are windings 14, 15. In a further modification, Fig. 4, the coils 14-17 are connected in series across an A.C. supply fo form one half of a bridge circuit, the other half of which comprises resistances 33, 34, the rectifier 21 being connected to the centre point between the resistances and to a point between windings 15, 17. Normally, the bridge is balanced, but on fault unbalance results and the switch 10 opens. The resistances 33, 34 may be replaced by a centre-tapped reactor, Fig. 5, (not shown) and inductances 12, 13 may be on the same line. The inductances may, in each case, be balanced against each other by adjusting variable air-gaps thereof. Specifications 608,508, [Group XXXV], 619,015 and 641,671 are referred to.
Patent GB-1048446-A (GB)
Title: Screw rotor machine
Inventor: WHITFIELD JOSEPH EARL
IPC: F04C18/00
Filed: 1964-05-14
Abstract: 1,048,446. Rotary compressors and motors. SVENSKA ROTOR MASKINER A.B. May 14, 1964, No. 20066/64. Heading F1F. A rotary compressor or motor of the meshing screw type comprising a housing 10, Figs. 1, 2, having intersecting cylindrical bores 12, 14 to form a working space having low and high pressure ports 50, 48 located on opposite sides of a plane in which lie the axes of the bores and co-operating male and female helically-threaded rotors 34, 38, includes a working section 61 extending from the low pressure end K of the housing to a point L corresponding to that end of the high pressure port nearest to the low pressure port and a high pressure section 63 extending from the point L to the high pressure end M of the housing 10 and also within the working section 61, the profile of the threads of the male rotor in transverse cross-section include a tip portion 53, Fig. 7, concentric with the bore 12 of substantially constant width throughout the length of the working section 61 and generated flank portions 47 and within the high pressure section 63 the profile of the threads of the male rotor include a circular tip portion 51, Fig. 21 and generated flank portions 59. The flank portions in each instance are generated by the crest edges of the female rotor threads and the centres of curvature of the circular tip portions lie substantially on the pitch circle 82 of the male rotor 34. The male rotor threads co-operate with the troughs of the female rotor to form the envelope of the male rotor thread profile during rotation of the rotors with the trough of the female rotor at the high pressure end being fully circular. An unbroken seal is formed in the working section 61 by the co-operation of the crest edges and roots of the respective rotors. As shown in Figs. 1 and 2, the high pressure section is gradually tapered with the tip portions of the male rotor gradually changing from a generator form 53 to a circular form 51 with the elimination of the sealed pockets so that an open pocket is provided at the point M to prevent further compression with consequent damage to the compressor and to reduce noise, temperature and bearing loads. The male rotor is preferably provided with three threads and the female rotor with four threads with timing gears 42, 46 keeping the rotors in timed relation with each other. In another embodiment, Fig. 24 (not shown) a sharp step is provided between the working and high pressure sections instead of the merging of parallel and tapered portions of the rotors.
Patent GB-357659-A (GB)
Title: Improvements in forging machines
IPC: B21J13/08
Filed: 1930-07-02
Abstract: 357,659. Forging-machines. MASCHINENFABRIK HASENCLEVER AKT.-GES., and NILGEN, K. A., 21, Belsenstrasse, both in D³sseldorf, GEORG, 0., 10, Attenbergstrasse, Herdecke - on - Ruhr, and CALAMINUS, J., 42, Sonderburgstrasse, Dusseldorf, both in Germany. July 2, 1930, No. 20140. [Class 83 (iv).] In a horizontal forging-machine wherein the work has to be passed from one to another of a number of gripping dies arranged above each other for successive heading operations a column for supporting the work is arranged in front of the dies and is shifted in a vertical direction by power means. The work e when required to be moved into the different dies b, c, d is supported on rollers on a table f adapted to be raised by the piston of a pneumatic &c. cylinder i and lowered by gravity to rest on one of a number of pair of supports n, o, p rotatable on a shaft s to move either pair of supports into vertical position by a hand-lever r which carries lever mechanism q, v, w for operating the valve l admitting fluid to the cylinder i. In the modification shown in Fig. 6 the table 6 for the work 4 is supported by a screw 5 engaging a nut 8 with a friction disc 9 driven in either direction by a double-cone sleeve 10 rotated by bevel gears from a shaft 15 driven by gearing 16, 17. In another modification, Fig. 11, the table is raised by a rack 25 and pinion 26 engaging a friction driving cone 27. The pinion 26 may be disengaged from cone 27 and engaged with a fixed cone 28 which acts as a brake in lowering the table. The handle r may be adapted to open and close the gripping slide, as shown in Figs. 13, 14, 16, 18. For this purpose pivoted handle q on lever r actuates through link v and lever w a sleeve x sliding on rod s, sleeve x engaging a rock-lever y connected to piston l<1> of a piston valve z. By manipulating handle q piston l<1> may be moved to admit air to pipe 1<1> and cylinder j for moving the slide a<1>, or to pipe 2<1> for retracting the slide a<1>, or to pipe 3<1> and cylinder i for raising the carrier supporting the work.
Patent GB-1530802-A (GB)
Title: Liquid-phase epitaxy fabrication methods
IPC: H01S5/00
Filed: 1975-09-05
Abstract: 1530802 Liquid phase epitaxy WESTERN ELECTRIC CO INC 5 Sept 1975 [11 March 1975] 20209/78 Divided out of 1530801 Heading BIS [Also in Division H1] The subject matter of this specification is included in specification 1530801, but the claims relate to growing a layer of uniform thickness with a tapered edge portion on a semiconductor substrate by placing a mask close (e.g. 70Á) to part of the substrate and maintaining the substrate in contact with a saturated source solution while cooling, the taper forming at the edge of the mask. Typically the layer, of GaAs or Al x Ga 1-x As 1-y  P y , is grown from a solution of its components in Ga using a 1mm. wide mask of sapphine, quartz or BN extending centrally along the base of a removal sleeve 3 in graphite boot 52 (Fig. 4A), under which saturation seed 59 and the substrate 57 are slid. The other lined walls contain different solutions, the sleeve 2 having a central partition extending down nearly to the substrate to locally increase the growth rate. The grown structure is cleared to form the laser configuration of Fig. 1, in which taper 16.1 guides light produced in active region 16 into the light guiding layer 14 grown from the material in sleeve 2.
Patent GB-1287354-A (GB)
Title: Improvements in artificial legs
Inventor: MAY DENNIS RONALD WILLIAM
IPC: A61F2/64
Filed: 1970-04-28
Abstract: 1287354 Artificial legs J E HANGER & CO Ltd 7 May 1971 [28 April 1970] 20237/70 Heading A5R An artificial leg comprises a shin portion 1 having a downwardly and rearwardly sloping plate 4 which is connected by two pairs of pivoted links to a horizontal plate 7 mounted on a thigh portion. The forward pair of links 11 is shorter than the rearward pair 12 and the instantaneous centre of rotation of pivotal movement of the thigh portion 7 about the shin portion 1, from the fully extended position, ascends for a predetermined angle of pivotal movement, before descending. Links 11, 12 are secured by bolts 13 to lugs 5, 6 and 8, 9 attached to the sloping plate 4 and to the horizontal plate 7 respectively. Both links 11 and 12 are cranked so as to permit flexing of the leg to a sitting posture without interference.
Patent GB-1507071-A (GB)
Title: Weatherseal having interference fit in slot
IPC: E06B7/23
Filed: 1975-05-15
Abstract: 1507071 Sealing strips SCHLEGEL CORP 15 May 1975 [16 May 1974] 20609/75 Heading E1J A sealing strip comprises a body 16 of foamed plastics with a pair of lobes 17, 18 and a member 25 of more rigid plastics material joined together by a narrow neck portion and enclosed in a coherent plastics skin 19. The member 25 is shaped to anchor in an undercut slot 15 and may be hollow (Fig. 3 not shown). The skin may be a separate sheet secured to the strip or may be formed integrally with it.
Patent GB-445002-A (GB)
Title: A process for opening-up cocoa beans
IPC: A23G1/02
Filed: 1935-07-22
Abstract: 445,002. Cocoa manufacture. DIEFENBACH, A., 3, Auf der H÷he, Arlesheim, Basle, Switzerland. July 22, 1935, No. 20818. Convention date, July 21, 1934. [Class 129] A process for opening up cocoa beans consists in treating them in a more or less comminuted condition with a solution of sugar to cause swelling and drying. The beans may be roasted before or after drying. The beans may be reduced in size before treatment. Preferably, 50 per cent solutions of fructose, glucose or caramelized sugar are used.
Patent GB-585505-A (GB)
Title: Improvements in or relating to pumping systems
IPC: F04D9/00
Filed: 1943-10-26
Abstract: 585,505. Fuel pumps. PULSOMETER ENGINEERING CO., Ltd., and GIBBS, B. H. Oct. 26, 1943, No. 20842/45. Divided out of 574,140. [Class 110 (i)] In a centrifugal pump of the type having a baffle adjacent to the eye of the pump, the impeller comprises vanes which impel the liquid first axially and then radially. The baffle F is of annular form and separates the main stream of liquid flowing to the eye from a surrounding portion of the liquid, in order to facilitate the release of bubbles of air and gas. The latter escape into a space A<3> above the baffle, and are discharged through a passage H leading back to the fuel tank. A wall E<2> adjacent to the impeller separates the inlet passage A<2> from the discharge passage E<1>. The pump is attached to the edge of a hole in the fuel tank by a flange A<1>. Alternative arrangements of the pump and modified forms of impeller are described. Specification 574,140 is referred to.
Patent GB-148991-A (GB)
Title: A generator of electric oscillations consisting of a thermionic tube in return coupling connection
IPC: H03B5/10
Filed: 1920-07-12
Abstract: 148,991. Ges. f³r Drahtlose Telegraphie. Aug. 7, 1917, [Convention date]. Electric oscillations, producing.-In a thermionic valve generator, the return coupling connexion is in parallel with the main anode circuit coupled to the aerial in order that the grid oscillatory circuit may be uninfluenced by the varying factors of the aerial. The grid circuit 5, 6, Fig. 1, is coupled with the branch of the aerial circuit containing the battery by means of an auxiliary coil 9, whilst the other branch of the anode circuit is coupled with the aerial. The desired proportion of energy to be transferred to the aerial may be obtained by the dimensioning of the coils 8, 9. The Specification as open to inspection under Sect. 91 (3) (a) describes a modification in which the anode circuit consists of two parts in series the primary of a transformer coupled with the aerial and an oscillatory circuit from which connexion is made to the grid. In a further modification, Fig. 3 (Cancelled), the anode circuit is tuned by means of an oscillatory circuit consisting of three elements, of which a capacity 10 and an inductance 11 are connected to the tube, a capacity connexion to the grid being used. The third element is the means of coupling with the aerial. In the case of capacitative coupling shown, it is the capacity 12, and in an inductive coupling it it is the transformer coil. In the case shown, a choking-coil 18 in parallel with the condenser 10 is necessary. To regulate the amount of energy transmitted to the aerial, a condenser 15 and one or more tuning-elements such as a variometer 19 may be inserted in the circuit of the aerial. This subject-matter does not appear in the Specification as accepted.
Patent GB-1334832-A (GB)
Title: Burner for gaseous fuels
IPC: F23Q9/00
Filed: 1972-05-05
Abstract: 1334832 Burner G KROMSCHRODER AG 5 May 1972 [7 May 1971] 21020/72 Heading F4T A gas or vapour burner comprises a burner tube 4 inside which a central electrode 5 is supported by and extends through a baffle 7 which has a tubular member 10 surrounding the electrode 5 and provided with apertures 11 in the form of slots extending parallel to the axis of the electrode and into a flange 9 engaging the inner surface of the tube 4, said slots directing the fuel supplied upstream of the baffle 7 to and around the exposed electrode 5 on the downstream side of the baffle 7. The baffle 7 has an insulating sleeve 8 which fits over an insulating bushing 6 on the electrode 5. The slots 11 lie in planes parallel to the axis of the electrode 5 and extend substantially tangentially with respect to the inner surface of the member 10 and are arranged so that they induce a vortex in the air passing through them, The tubular member 10 has outer and inner diameters having dimensions such that it defines Annular spaces 12 and 13 so that air flows through the space 12, the slots 11 and the space 13 and swirls about the electrode 5. The baffle 7 and the tube 4 are made of conducting material to form a circuit with ionized gas around the electrode 5 for monitoring the flame.
Patent GB-233581-A (GB)
Title: An improved clip for show cards, serviettes and the like
IPC: G09F1/14
Filed: 1924-09-06
Abstract: 233,581. Rooney, J. W. Sept. 6, 1924. Napkin and serviette holders.-A clip for serviettes &c. is formed by bending a length of spring wire to form two limbs and then bending the closed end between the limbs of the open end and preventing its return. As shown in Fig. 1, the limbs 9, 10 of the open end form a supporting device enabling the clip to stand up. A plate 11 prevents the limbs 5, 6 of the closed end from returning between the limbs 7, 8. The article is clipped between the plate 11 and the limbs 5, 6. As shown in Fig. 3, the legs 9, 10 are dispensed with and an initial tab 12 is secured to the limbs 5, 6. The plate 11 may be replaced by an ornamental device.
Patent GB-1326491-A (GB)
Title: 1,4-dihydropyridine derivatives
IPC: C07D401/04
Filed: 1971-04-19
Abstract: 1326491 Dihydropyridine derivatives BAYER AG 19 April 1971 [5 Nov 1970] 21149/71 Heading C2C Novel compounds I in which R is H, a straight or branched chain or cyclic alkyl, alkenyl or alkynyl radical of up to 6C or in the case of a cyclic alkynyl radical, having 6C atoms, which may be substituted by OH or 1-3C alkoxy, or R is a benzyl or phenethyl radical where the aromatic ring may be substituted by 1-3 (1-3C alkoxy) and/or 1 or 2 (1-3C alkyl) and/or 1 or 2 F, Cl or Br atoms; R<SP>1</SP> is 1-4C alkyl; R<SP>11</SP> is a straight or branched chain alkenyl or alkynyl radical with up to 6C, which may be interrupted by 1 or 2 oxygen atoms or which may be substituted by OH, or R<SP>11</SP> is furfuryl; R<SP>111</SP> is an aryl radical which may be substituted by 1-3 NO 2  and/or 1-3 F, Cl or Br and/or 1-2 OH and/or 1-2-acyloxy and/or 1-3-alkoxy, and/or a methylenedioxy group and/or 1-2-amino groups and/or 1-2- acylamino groups and/or a CF 3  group and/or a COOH group and/or a carbalkoxy group (the alkyl moieties in R<SP>111</SP> have 1-4C and the acyl moieties 1-2C) ; or R<SP>111</SP> is cyclohexyl, benzyl or styryl or a pyridyl, pyrimidyl, furyl thienyl, or pyrrolyl radical, the pyridyl, pyrrolyl, thienyl or furyl optionally being substituted by a 1-2C alkyl radical and the pyrimidyl radical additionally by 1-2 OCH 3  or OC 2 H 5  groups; provided that R<SP>111</SP> is aryl substituted by 1-3 NO 2  and/or 1-2-amino groups only when R is H and provided that R<SP>111</SP> is pyridyl only when R is H, are prepared by reacting an aldehyde R<SP>111</SP>CHO with an ester R<SP>1</SP>COCH 2 COOR<SP>11</SP> and with ammonia or an amine RNH 2  or with an ester in an organic solvent at elevated temperature. Pharmaceutical compositions comprise a compound I together with a suitable recipient and have coronary dilating, blood pressure lowering and muscular spasmolytic effects.
Patent GB-238902-A (GB)
IPC: B61H15/00
Filed: 1925-08-24
Abstract: 238,902. Scheib, L. Aug. 23, 1924, [Convention date]. Compensating for wear.-Means for automatically adjusting the rigging of railway vehicle brakes to compensate for wear comprises a chain cr like member a, b, attached at its ends respectively to the cap of the brake cylinder at x and to the screw adjusting-device e, which passes over a movable part of the brake rigging such as the bolt d, whereby the chain is temsioned to operate the device, e during a brake application.
Patent GB-316663-A (GB)
Title: Improvements in or relating to perforated cards for use in calculating statistical or similar machines
IPC: G06K19/04
Filed: 1929-07-10
Abstract: 316,663. Siemens & Halske Akt.-Ges. Aug. 2, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Statistical apparatus.-A card for use in statistical apparatus consists of two parts, one part h, Figs. 1 and 2, being arranged for the representation, by perforations, of letter indications and the other part i for the representation of number values. The indications are formed from combination values arranged in groups from a to f, and special sections of the card, such as g, Fig. 1, and k, l, Fig. 2 are provided for characterizing or classifying the indications in the letter or numbersections.
Patent GB-834693-A (GB)
Title: Improvements in or relating to film spools
Inventor: VERLINDEN JAN BAPTIST
IPC: G03B17/30
Filed: 1957-07-04
Abstract: 834,693. Photographic film spools. GEVAERT PHOTO-PRODUCTEN N. V. July 4, 1957 [July 5, 1956], No. 21231/57. Class 98(1) A photographic film spool has a seated film-receiving core, one wall of the seat has a film-anchoring projection 5 for entering a hole near one end of a film and the opposite wall of the slot has projections 3, 4, the faces of the projections being shaped so that the film end can be flexed past the projection 5 merely by pushing the film into the slot. At the rear of projection 5 a groove 9 may be provided for entry of part of the film when this has been engaged over projection 5 and is tensioned, the bottom of this groove preferably being convex with respect to the groove entrance.
Patent GB-350290-A (GB)
Title: Improvements in spark producing toys
IPC: A63H33/36
Filed: 1930-07-14
Abstract: 350,290. Floating toys ; spark-producing toys. ARNOLD, C., 47, Deutschherrnstrasse, Nuremberg, Germany. July 14, 1930, No. 21251. [Class 132 (iii).] . A spark - producing top is adapted to float in water and is driven by a spring - motor d, that serves tc rotate a propeller g and operate a spark - producing device l, n, of known type, through intermediate gearing k, k<1>. The sparks produced are visible through coloured windows in the upper casing b. Figures r such as representations of ducks are attached to the casing for rotation therewith. The motor d is wound by a key inserted through a sleeve q, the key when in position serving to lock the mechanism by abutment with one of the arms m of the spark-producing device.
Patent GB-1003628-A (GB)
Title: Improvements in or relating to latch control means for doors
IPC: E05B5/00
Filed: 1962-06-01
Abstract: 1,003,628. Latch fastenings. REGIE NATIONALE DES USINES RENAULT. June 1, 1962 [June 14, 1961], No. 21303/62. Heading E2A. Control means for a box section door latching mechanism comprises a control member 1 having a longitudinal central portion 3 mounted in bearing means 5 on the inner surface of the box section, a first cranked end 2 adapted to actuate the door latching mechanism upon rotation of the central portion, and a second cranked end 4 forming a control handle located adjacent an access aperture 8 in the box section through which manual arcuate movement of the handle may be affected. The control member is loaded by a spring 10 so that the handle must be pressed downwardly to operate the latch mechanism.
Patent GB-148060-A (GB)
Title: Improvements in and relating to valves
IPC: F16K1/48
Filed: 1919-08-30
Abstract: 148,060. Schroeder, E. W. Aug. 30, 1919. Lift valves; spindles.-Relates to a valve having a valve-head or member detachable from its spindle and provided with supplementary screws for holding it on its seating whilst the spindle is detached and the valve cover removed for repairs. In the arrangement shown, the valve spindle is fitted with oppositely-disposed bowed springs 21 which snap into a spherical recess in the valve member 16. An annular groove 23 is provided in the valve to take the ends of two screws 26 disposed approximately parallel to the valve seating-
Patent GB-1462958-A (GB)
Title: Biodegradable implantable drug delivery device and process for  preparing and using the same
IPC: A61D7/00
Filed: 1974-05-14
Abstract: 1462958 Controlled release devices ARTHUR D LITTLE Inc 14 May 1974 [17 May 1973] 21361/74 Heading A5B An implant device for the controllable release of a biologically active substance or a diagnostic agent into a living host into which it is to be implanted comprises a biodegradable matrix structure formed from a substantially non-toxic polymer of an alpha-amino acid having the substance which is to be controllably released physically distributed therethrough. The implants may be for example, in the form of films, ribbons rods or fibres and may be implanted in or near an organ of the body, or they may be implanted subdermally They may also be administered as uterine or vaginal inserts.
Patent GB-135987-A (GB)
Title: Improved Process for Separating Ortho- and Para-toluene-sulphochlorides.
Inventor: MATTHEWS FRANCIS EDWARD
IPC: C07C309/86
Filed: 1918-12-20
Abstract: 135,987. Matthews, F. E., and Strange, E. H. Dec. 20, 1918. Tolucne-o-sulphochloride is separated from mixtures with its para isomer containing 60 to 70 per cent. of the ortho compound by seeding the liquid mixture at about -6‹ C. with a crystal of the ortho compound and removing the crystalline ortho compound which separates out. The initial mixture may be obtained by treating toluene with chlorsulphonic acid and crystallizing out a portion of the para compound at -20‹ C.