baber/WOPTO huggingface dataset:
Patent GB-1339372-A (GB)
Title: Track circuit
IPC: B61L1/18
Filed: 1972-05-19
Abstract: 1339372 Track circuit COMPAGNIE DE SIGNAUX ET D'ENTREPRISES ELECTRIQUES 19 May 1972 [19 May 1971] 23795/72 Heading B7N  In an A.C. track circuit including supply generator E, receiver R and track relay RV, a plurality of capacitances C1-Cn of substantially the same capacity are connected across the track at predetermined intervals to stabilize both attenuation and input impedance during wide changes in track insulation.
Patent GB-899619-A (GB)
Title: Improvements in or relating to liquid flow meters
Inventor: WATSON LESLIE
IPC: G01F15/00
Filed: 1957-07-27
Abstract: 899,619. Counting-apparatus. LEEDS METER CO. Ltd. Oct. 24, 1958 [July 27, 1957], No. 23852/57. Class 106 (1). The invention relates to liquid flow meters of the type in which the meter operates indefinitely to trip a switch or actuate other mechanisms each time a predetermined amount of liquid has passed through. Such a meter is described in Specification 800,672. As shown, Fig. 1, the meter shaft drives a gear 7 which via intermediate gearing drives large gears 5, 6 in opposite directions. Two pairs of pawls 9, 10 are rockably mounted on a rotary arm 3 so that either the pawls 9 engage the gear 5 or the pawls 10 engage the gear 6, the arm 3 thus being caused to rotate in one direction or the other. A spring- biased rocker-plate 16 is also mounted on the arm 3 and acts as a toggle to maintain the respective pawls 9, 10 in engagement with gears 5, 6. The plate 16 bears a cam roller 17 cooperating with a fixed cam 11 and an adjustable cam 11a, the cams being arranged to change over the drive to the arm 3, the gears 5, 6 being effective alternately. The arm 3 carries a triprod arranged to actuate by tilting a mercury switch 1 during one of its rotary movements. The position of the adjustable cam 11a is indicated by a pointer 13 and a pointer 14 moves with the moving arm 3.
Patent GB-470673-A (GB)
Title: Improved pay or like envelopes
IPC: B65D27/04
Filed: 1936-09-02
Abstract: 470,673. Envelopes. CRAIG, L. R. Sept. 2, 1936, No. 24020. [Class 146 (ii)] A pay or like envelope having two pockets is formed from a single blank comprising a front portion a, a side portion b adapted to be folded over and secured to the front by adhesive along the.vertical edge, a bottom portion c adapted to be folded over the folded side b and secured thereto at the vertical edges by adhesive, and a closure flap d extending from the front a, having two apertures d<1>, d2 therein, a window a<1> being provided in the front a, and a cut-away portion c<1> in the free horizontal edge of the bottom c. In a modification the side portion b is approximately half the size of the front a and helps to form one pocket in conjunction with a similar side portion at the opposite edge of the front a. A second window may be formed in the bottom portion c. The windows are preferably formed by cutting out portions of the blank and covering these openings by transparent material. Cash is placed in the front pocket formed by the front and side portions, and Treasury notes in the other pocket, the top corners of the notes being thrust through the apertures in the closure flap d before the latter is sealed, whereby the notes may be counted. The cut-away portion c<1> facilitates separation of the pockets. Specification 450,650 is referred to.
Patent GB-298685-A (GB)
Title: Improvements in sound-reproducing instruments
IPC: H04R11/08
Filed: 1927-07-11
Abstract: 298,685. Columbia Graphophone Co., Ltd., and Mitchell, r. A. July 11, 1927. Divided on 302,190. Gramophone pick-ups; magnetic instruments. - An electric soundreproducing device has an armature A, Fig. 1, or like moving part or an associated part pivoted by means of single or multiple ball bearings B. The armature pivots are carried by two bifurcated polar extensions N on a U or similarly shaped permanent or electro magnet M so that the pivot lies approximately in the plane of the field magnet. One end of the armature functions as a stylus holder H and is located in the air gap between polar extensions S1 and the other end A3 of the armature is located close to, but not in the gap between polar extensions S2. Fixed or adjustable rubber or like damping means, not shown, restrain the movement of the armature. The armature is encircled by an induction coil connected to an associated amplifier by leads L - - L3 which are contained within, or form part of, a movable arm O, Fig. 4, on which the reproducing unit is supported. The arm is pivoted on a cabinet U which carries a record turntable W and other associated mechanism. The reproducing unit is eccentrically pivoted on a fork J which is mounted on a, rubber tube 02 to control resonance and to insulate the leads from one another. When the reproducing unit is thrown back into the rest position C2 it touches the head of a screw 03 and thus short-circuits the leads. According to modifications, the reproducing stylus is maintained in a plane approximately tangential to the sound grooves of the record, (Figs. 8 and 9, not shown), as described in Specification 300,704, [Class 40 (ii), Phonographs &c.]; the reproducing unit is arranged horizontally to the record (Figs. 6 and 7. not shown). Specifications 302,190, and 302,216, [Class 40 (ii), Phonographs &c.], also are referred to, and Specification 269,978 is referred to in the Provisional Specification.
Patent GB-155400-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F01B3/04
Filed: 1919-10-02
Abstract: 155,400. Shepherd, W. G. Oct. 2, 1919. No Patent granted (Sealing fee not paid). Packing, non-metallic for the stuffing-boxes 81 of an internal-combustion engine comprises split carbon rings 79 held in position by surrounding springs.
Patent GB-360916-A (GB)
Title: Improvements in and relating to baking ovens
IPC: A21B1/48
Filed: 1930-08-12
Abstract: 360,916. Coating wire. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-( Assignees of Ipsen, C. L. ; 11, Lakewood Avenue, and Cherry, R. M. ; 1048, Baker Avenue,both in Schenectady, New York, U.S.A.) Aug. 12, 1930, No. 24145. Convention date, Aug. 12, 1929. [Class 140.] Wire to be enamelled is unwound from two spools 23 and passes round two sets of vertically adjustable sheaves 24, 25 under the surface of enamel in a basin 30 the vertical adjustment of the sheaves controlling the thickness of the enamel coating. It then passes up through apertures into an electrically heated oven 10 and out through apertures at the top, after which it is passed over sets of sheaves 26, 27, back over the lower sheaves 24, 25, until three complete passes through the oven have been made, when it is wound on receiving sheaves 28.
Patent GB-1181476-A (GB)
Title: Load Pick-Up Device for a Stacking Crane.
Inventor: NECKE RUDOLF
IPC: B66F9/07
Filed: 1968-05-21
Abstract: 1,181,476. Stacker cranes. INSTITUT FUR FORDERTECKNIK LEIPZIG. 21 May, 1968, No.]24149/68. Heading B8H. In a stacker crane. Fig. 1, a guide 2 with load-forks 3 is movable into and out of the storage racks 5, 6 to set down the load. The girder 2 is moved with respect to a member 7 by hydraulic rams and has rollers 9, Fig. 3, which run on rails 8. A control cab 1 is raised by cables 15 and guided by telescopic members 14. A rotary crab 12 runs on a beam 13. Interlock devices prevent either goods or forks fouling the racks, and the forks move automatically to a selected point in the racks. The forks 3 may be extensible on both sides of the girder 2.
Patent GB-589359-A (GB)
Title: Improvements in or relating to fluid pressure servo-motor systems
IPC: C08F110/00
Filed: 1944-12-04
Abstract: 589,359. Fluid-pressure servomotor-control systems. AUTOMOTIVE PRODUCTS CO., Ltd., and CHOUINGS, L. C. Dec. 4, 1944, No. 24232. [Class 135] A fluid-pressure servomotor system, applicable to vehicle steering gear, comprises an operating member 34, Fig. 1, connected to a driven member 26, for moving, e.g. the drop arm 15 of the steering gear, through a nut 31, angular movement of the nut operating a control valve 41 through a bell crank 38, Fig. 2, whereby the servomotor differential piston 21 moves the driven member and through the resulting opposite angular movement of the nut returns the valve to its initial position thus rendering the servomotor inoperative, the nut being connected to the driven member through a thrust bearing 30. The valve 41 comprises a casing having a spring-loaded plunger 47, operated by the bell-crank 38, which slides in the casing and laps with the end of the. spring-loaded plunger 44 to control the port 53 leading to the reservoir 57. The other end of the plunger 44 has a head 45 controlling communication between the ports 51, 49, leading to the pump 59 and the cylinder space 28, and the cylinder space 29 respectively. Inward movement of the plunger 47 unseats the head 45 to allow ' pressure fluid to flow to the cylinder space 29 to move the piston downwards. Reverse movement, of the plunger 47 allows the head 45 to seat and. opens the port 53 allowing pressure fluid to flow from the cylinder space 29 through the bore 55 to the reservoir so that the piston moves upwards. The driven member 26 may be an axially movable operating member while the shaft 34 may be a rotatable driven member. Resilient biassing means in the form of a spring- loaded plunger 65 engaging a helical groove 68 in the nut tends to rotate the nut back to its central position whenever the nut is displaced therefrom. In a modification the drop arm is connected through a shaft to arms having rotatable studs engaging grooves in the nut, the servomotor being connected to the drop arm. Specification 589,381 is referred to.
Patent GB-424548-A (GB)
Title: Improved combined paper knife and letter balance
IPC: G01G19/00
Filed: 1934-08-22
Abstract: 424,548. Paperknives combined with weighing - apparatus. WERTHEIM, P., 6, Avenue du General Mangin, Paris. Aug. 22, 1934, No. 24251. Convention date, Nov. 16, 1933. [Class 146 (ii)] [See also Group XVIII] In a combined paperknife and letter balance of the type comprising a pivot blade and a handle, the latter carries a claw or grip to which may be suspended a letter or similar small object, and a movable cursor independent of the claw or pivot blade or integral with the pivot blade, and permitting the conditions of equilibrium of the paperknife on its pivot blade to be modified. A cursor 2 carrying a pivot blade 4 slides on the paperknife 1 which is provided with a claw or clip 3 for a letter or similar small object. A standard mark 6 is provided on the cursor, and a scale 5 is marked on the paperknife; if desired, the mark 6 may be on the paperknife, and the scale 5 on the cursor. When the mark 6 is opposite a division on the scale 5, a weight suspended by the claw 3 equivalent to that division on the scale will just balance the paperknife about the pivot 4. The pivot 4 may be fixed and integral with the paperknife, and the cursor then acts as a movable weight.
Patent GB-1443256-A (GB)
Title: Push-on handle
IPC: H05K7/14
Filed: 1974-06-03
Abstract: 1443256 Handle for printed circuit board PRECITEC GES FUR PRAZISIONSTECHNIK UND ELEKTRONIK mbH 3 June 1974 [9 June 1973] 24450/74 Heading H1R A handle for a printed circuit board comprises an elongate member having a slot in which the board is received and a retaining member mounted on the elongate member having a sharp edged projection located and formed so as to yield when the board is being inserted and to tend to dig into the surface of the inserted board so as to resist its withdrawal. As shown, slot 3 in member 2 widens inwardly from opening 7 so as to retain one or more sheet steel retaining members 4 with symmetrically disposed inwardly directed ends. Groove 6 is for centring the inserted board. Other forms of retaining member are disclosed including one mounted on the outside of member 2 by its own resilience (Fig. 5, not shown), or riveted to it (Fig. 6, not shown).
Patent GB-735449-A (GB)
Title: Improvements in rotary fluid pumps and motors
Inventor: ARMINGTON RAYMOND QUINTON
IPC: F04C15/00
Filed: 1952-09-30
Abstract: 735,449. Gear motors and pumps. GENERAL MOTORS CORPORATION. Sept. 30, 1952, No. 24453/52. Class 110 (2). A hydraulic pump or motor comprises a housing 10 closely surrounding two coacting gears 18, 19 except at the zone where inlet and outlet passageways 13, 14 permit fluid flow tangentially of the gears, one of the gears being secured to a shaft 21 and the other floating freely in the housing, and fluid-pressure balancing means, which communicate with the passageways, being provided to balance the radial forces acting on the gears. In the pump shown the driving-shaft 21 is mounted in a bearing 22 of an end cover 16 and the driven gear 18 floats freely within the housing. The other end cover 15 is provided with passageways which connect a passage 25 leading from the inlet 13 to recesses 27, 29, located adjacent the teeth of the gears 18, 19, respectively, at points diametrically opposite the inlet. Other passageways in the cover connect a passage 30 leading from the outlet to diametrically-opposite recesses 32, 34. By these means the radial forces acting on the gears are balanced. End pressures acting on the gears are balanced by providing recesses in the cover 16 immediately opposite those in the cover 15, the pressure from each recess 27, 29, 32, 34 being transmitted through the openings between the teeth of the gears to the corresponding recess in the cover 16. The end thrusts are further balanced by forming circular pockets in the covers at the two ends of each gear, these being placed in communication with each other by axially extending. passageways 36, 38.
Patent GB-853199-A (GB)
Title: 2-sulfamoylbenzoic acid esters
IPC: A61K31/215
Filed: 1959-07-16
Abstract: The invention comprises compounds of the formula : <FORM:0853199/IV(b)/1> wherein R1 and R2 are hydrogen or C1-6 alkyl groups, R3 is a C3-6 branched alkyl group or unsaturated aliphatic hydrocarbon group or a C4-6 cycloalkyl group and R4 is hydrogen, amino or mono-or dilower alkylamino and acid addition salts of those compounds wherein R4 is amino or mono-or dialkylamino.  The compounds are prepared either (a) by esterifying 2-chlorosulphonyl-benzoyl chloride or its 4-nitro derivative with an alcohol R3OH, treating the resulting 2-chlorosulphonyl benzoate or 4-nitro-2-chlorosulphonyl-benzoate with ammonia or an amine R1R2NH and when the desired product is a 4-amino derivative, reducing the 4-nitro-group and, if desired, alkylating the resulting 4-amino group ; or by treating saccharine or a 4-nitro-derivative thereof with an alcohol R3OH to give a 2-sulphamoyl-benzoate or its 4-nitro derivative and in the latter case reducing and if desired alkylating the resulting amine. Examples describe the preparation of isopropyl, t-butyl, cyclopentyl, pentyl-(3), cyclohexyl, isobutyl, hexyl-(2), allyl, propargyl, methallyl, hexenyl(5) and sec butyl esters of 2-sulphamoyl benzoic acid, 4-amino-2-sulphamoyl benzoic acid or N alkyl derivatives of these compounds.  Intermediate 4-nitro compounds are also described.
Patent GB-1450754-A (GB)
Title: Process for extracting cycloaliphatic hydroperoxides
IPC: C07C409/06
Filed: 1974-06-03
Abstract: 1450754 Process for the extraction of cycloaliphatic hydroperoxides RHONE-POULENC SA 3 June 1974 [4 June 1973] 24478/74 Heading C2C The invention comprises a process for the extraction of a cycloaliphatic hydroperoxide from the product of the oxidation of a cycloaliphatic hydrocarbon with a free-oxygen containing gas in which the hydroperoxide is dissolved in a polar aprotic solvent which is not miscible with the hydrocarbon, said solvent being a polymethylene sulphone or a (C 2-4  alkylene) glycol carbonate.
Patent GB-1299034-A (GB)
Title: Method and apparatus for thermomagnetically recording or displaying information
IPC: B01J13/02
Filed: 1971-04-19
Abstract: 1299034 Magnetic recording NATIONAL CASH REGISTER CO 19 April 1971 [2 April 1970] 24505/71 Heading G2H [Also in Division B6] An erasable image is produced on a recording member coated with a plurality of minute capsules each having a wall of transparent polymeric material and containing magnetic particles in a suspending medium of variable viscosity. The suspending medium, which is initially in the cool viscous or solid state, is heated and subjected to a magnetic field to form the image, a heat or magnetic pattern being employed. The former may be produced by means of hot type, infrared radiation or a transducer which converts an optical image into a heat image. The image may be produced by alignment of plate or needle shaped magnetic particles or displacement of magnetic particles with respect to a suspending medium of different colour, e.g. containing white suspended pigment or comprising coloured wax. A positive or negative image may be produced depending on the direction of displacement. As shown, the member is in the form of an endless belt, the image being formed by thermal imaging device 42 and magnet 44 and erased by heater 46 and magnet 48. A portion only of the recorded information may be erased.
Patent GB-974180-A (GB)
Title: Improvements in or relating to containers of thermoplastic material
Inventor: HOWELL BRYAN GORDON
IPC: B65D1/34
Filed: 1962-06-26
Abstract: 974,180. Trays for foodstuffs; thermoplastic containers. METAL BOX CO. Ltd. May 9, 1963 [June 26, 1962], No. 24558/62. Headings B8D and B8P. An open-topped container moulded from thinwalled thermoplastic material has reinforcing ribs 6 and 8, 9, the surfaces of which merge along their line of junction where the side walls and bottom wall meet. The container may be of high density polyethylene. In a modification, Fig. 3 (not shown), the bottom wall may slope upwards to its centre; the inner ends of the ribs 8, 9 may merge so that their crests intersect one another; the crests of the ribs may be rounded; and the container may be of circular cross-section.
Patent GB-998216-A (GB)
Title: A process for the preparation of ammonia and chlorine from ammonium chloride
IPC: C01B7/05
Filed: 1963-06-20
Abstract: Ammonia and chlorine are prepared from NH4Cl in two stages consisting of (1) contacting ammonium chloride and steam with a mixture of MgO or one or more MgO-forming compounds and an oxidation catalyst, ammonia being formed and withdrawn whilst the formed HCl is absorbed by the MgO; (2) treating the resultant solid with oxygen or oxygen-containing gas, in the presence of steam, to release the HCl and at least partly convert it into chlorine and water. The MgO is preferably granular and may be formed in situ by heating MgCl2 in oxygen or steam above 500 DEG  C. prior to the main reaction. The compounds that form MgO during the main reaction may be magnesite or magnesium hydroxide. The catalyst component for the oxidation of HCl may be of the Deacon type, e.g. those described in Specification 908,022 (i.e. consisting of one or more copper chlorides, one or more rare earth metal chlorides, and one or more alkali metal chlorides, preferably KCl). The preferred rare earth chlorides are chlorides of didymium (which contains La2O3, Nd2O3, Pr6O11, Sm2O3).  The catalyst is preferabl supported on carriers, e.g. pumice stone, ceramics, aluminium oxides or silica gel.  The concentration of the catalyst in the mixture may be 5-30% by wt. and increase in the direction of flow of the reaction gas.  The first stage may be performed at 250-500 DEG C. and the second at 350-500 DEG  C.  Unconverted HCl may be recirculated. The mol. ratio of steam/ammonium chloride of the feed for the first stage is in the range 1 : 3 to 2 : 1, and water vapour is used in the 2nd stage corresponding to a partial pressure of 5-30%.
Patent GB-1199170-A (GB)
Title: Improvements relating to the Manufacture of Contact Spring Assemblies
Inventor: ESTORFFE ARCHIBALD BERNARD
IPC: H01H49/00
Filed: 1967-11-28
Abstract: 1,199,170. Post Office relays. PLESSEY CO. Ltd. 28 Nov., 1968 [28 Nov., 1967; 23 May, 1968], Nos. 54118/67 and 24604/68. Heading H1N [Also in Division B3] In a method and machine for making an electric contact spring assembly for a relay, preferably a Post Office 3000 type relay, the contact springs 17-20 with intervening insulating spacers (not shown) are built up into a stack, the contact ends 12 thereof being aligned vertically with a spacer bar assembly comprising spacer bars 14, 15, 16 inserted laterally between the springs. The stack is clamped and a relative reciprocation between the stack and the spacer bar assembly in the longitudinal direction of the springs produces a deformation towards the clamped ends of the springs and sets into the assembly the appropriate contact actions which may be N.C., N.O. or change-over. The alignment of the ends 12 is achieved by a bar 25 having slots 64 each of which engages the ends 12 of a stack, the bar being moved towards the stack by means of a lever (26), Figs. 1 to 3 (not shown). After alignment the bar 25 is moved away and the spacer bar assembly of the machine reciprocated by means of a pneumatic piston and cylinder assembly (40, 36). A microswitch (29), Fig. 1 (not shown), is provided for engagement by the bar 25 such that the reciprocation of the spacer bar assembly cannot begin until the bar 25 has been moved away from the stack. Additionally buttons (39), operating switches, are provided on either side of the machine so that both of an operator's hands have to be clear of the machine before reciprocation of the spacer bar assembly commences. The springs may be bent to a desired curvature prior to assembly in the stack, the curvature depending upon the purpose of the spring, i.e. make, break or buffer.
Patent GB-438910-A (GB)
Title: Improvements in electric discharge lamps
IPC: C09K11/59
Filed: 1934-08-28
Abstract: 438,910. Fluorescent screens. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) Aug. 28, 1934, No. 24777. [Class 98 (i)] [See also Group XL] An electric discharge lamp is provided on its inner wall with a layer of fluorescent material excited by radiation from the discharge and comprising a mixture of a modification of zinc silicate which fluoresces yellowish-white and of a material, such as calcium tungstate, which fluoresces blue, whereby a substantially white light is produced from the combination. The modified zinc silicate may contain manganese, possibly in the form of lower oxides. In an example a mixture of 93 per cent of the zinc silicate and 7 per cent of calcium tungstate is coated on the inner wall of a low pressure mercury lamp, the thickness of the layer being just sufficient to prevent transmission of ultra-violet radiation. According to the Provisional Specification the fluorescent mixture may be applied to the envelope or to a screen in front of the tube and may comprise 90-97 per cent of the zinc silicate. Specification 255,057, [Class 98 (i)], is referred to.
Patent GB-283275-A (GB)
Title: Improvements in carburetting means for internal combustion engines
IPC: F02M29/02
Filed: 1926-10-07
Abstract: 283,275. Clayton, J. Oct. 7, 1926. Spray carburettors.- The nozzle outlet c is controlled by a needle valve, the stem e of which serves as a support for suction-actuated' oppositely-handed propeller devices d which therefore rotate in opposite directions. The spindle e is screw-threaded at i and may be rotated by an arm h which may be connected to the throttle lever. Fuel from a float chamber is supplied to a casing r and is flung towards the nozzle outlet bv a drum o mounted on a spindle n and rotated by a propeller m in the air passage k provided with a pivoted valve l.