baber/WOPTO huggingface dataset:
Patent GB-223385-A (GB)
Title: Improvements in or relating to telephone systems
IPC: B05B7/04
Filed: 1923-09-29
Abstract: 223,385. Coventry Automatic Telephones, Ltd., and Wilman, C. W. Sept. 29, 1923. Automatic and semi-automatic exchange systems; metering.-In systems employing register controllers, the feed relays or impedances for one or both lines are associated with a relay group controlling the connection of the register controller to the calling line and the selectors. The meter-controlling relays may also be associated with the group. When a subscriber's line switch seizes the relay group shown, line relay 1 and release relay 3 pull up and a hunting circuit is completed for driving magnet 14 which steps wipers 9 - - 12 in search of an idle register-controller. When wiper 12 finds an ungrounded terminal, relay 4 being no longer short-circuited connects wipers 10, 11 over 44, 43 to the first selector and wiper 9 over contact 40 to relay 7. A momentary ground returned over wiper 11 energizes relay 2, which locks up and grounds the release wire independently of relay 3. Relay 1 repeats dialled impulses over wiper 9. When the register controller has finished its function, wiper 12 is ungrounded and the relapse of relay 4 disconnects the register-controller and cuts the talking wires through. Supply of talking current. The calling loop is fed over relay 1 and the called loop, if the line terminates in the same office, over relays 6, 7. Normal metering and release. The operation of relay 7 in series with the register impulse relay energizes relay 8, which locks up and energizes relay 5. Later, when the called party replies, relays 6, 7 pull up together and relay 8 falls back, grounds the meter wire 53, and releases relay 5, which falls back slowly and disconnects the meter wire again. When the calling party hangs up, relays 1, 3 release and complete a restoring circuit for magnet 14, and when off-normal contacts 15 change over relay 2 releases also and ungrounds the release wire. Metering preventing, and control of release by operator. In case of calls to an operator, relay 6 operates before relay 7 as in Specification 221,362. Relay 5 accordingly releases, disconnects the meter wire, and provides a circuit to prevent release of relay 8 when relay 7 pulls up. This condition of relays 5, 8 transfers control of release relay 3 from relay 1 to relay 6. Attendant's signal. Lamp 36 glows while relay 3 is energized and relay 7 is not to indicate this condition to the attendant. Specifications 208,075 and 228,742 are referred to also.
Patent GB-725259-A (GB)
Title: Improvements in or relating to circular saws
Inventor: HILTEBRAND HEINRICH
IPC: B23D61/02
Filed: 1953-09-02
Abstract: 725,259. Sawing. LENNARTZ, W., and BROGLI, L., [trading as LENNARTZ & CO.], Sept. 2, 1953, No. 24250/53. Class 145 A circular saw comprises toothed sections 2 slotted at their inner sides to fit over a reduced portion 4 of the saw disc 1, on which they are held by rivets 5, and the sections have a semicircular groove 7 at both ends and a hole 10 at one end so that a circular pin 8 having a rightangled extension 9 of reduced diameter may be fitted between the sections to brace them together. The grooves 7 may be made to a radius slightly greater than that of the pins to allow for grinding the abutting edges to remove distortion owing to heat treatment of the sections before they are fitted. The depth of the slot in the sections is sufficient to leave a space 11 between the slot bottom and the reduced disc portion 4.
Patent GB-823600-A (GB)
Title: Improvements in hydraulically controlled systems for reciprocating movable members
IPC: B23Q5/26
Filed: 1958-07-28
Abstract: 823,600. Hydraulically-operated machine tools. EMBOUTISSAGE & USINAGE DE SAINT-DENIS. July 28, 1958 [July 30, 1957], No. 24263/58. Class 69 (2). The piston 3 reciprocating the slide of a hydraulically-operated machine tool is reversed by an electrically-operated valve 46. At the right-hand end of the stroke of the piston 3, Fig. 1, contacts 64, 65 are closed by rod 20, at the left-hand end stop 9 is forced to the left by piston 3 causing part 17 and rod 18 to move to the left to close contacts 62, 63. Closure of either pair of contacts causes a reversal of valve 46. Valve 57 directs liquid exhausted from cylinder 4 to the reservoir 42, normally via throttle 61, but when contacts 66, 67 are closed by cam surface 25 attached to the piston 3 shifting rocking member 30, direct via port 58. The contacts are arranged in a dust-proof container and the position of stop 9 and slider 26 are variable by threaded rods 8, 27 to vary the length of stroke and change-speed point respectively.
Patent GB-1189649-A (GB)
Title: Improvements in and relating to the Production of Oxide Materials.
Inventor: HEPWORTH MATTHEW ARNOLD
IPC: C01F5/06
Filed: 1966-06-01
Abstract: 1,189,649. Dense magnesium oxide. THERMAL SYNDICATE Ltd. 31 Aug., 1967 [1 June, 1966], No. 24400/66. Heading C1A. A block of magnesium oxide of density not less than 3À50 gm./c.c. is made by intimately mixing magnesium oxide powder of surface area determined by nitrogen adsorption greater than 10 m<SP>2</SP>/g. (prepared by calcining a decomposable magnesium compound below 850‹ C.) with 0À1 to 10% by weight of finely divided lithium salt, e.g. lithium fluoride, sintering by heating in air at 700‹ C. or above, heating to 800‹ to 1400‹ C. while compressing in a die under 500 to 3000 p.s.i. pressure in a vacuum less than 0À5 torr, and firing at 1000‹ C. or above in a moving atmosphere. Calcination to produce magnesium oxide may take place in a rotary drum. The intimate mixture may be formed by mixing slurries of magnesium oxide and lithium fluoride in an inert organic liquid, e.g. isopropanol, grinding in a colloid mill and evaporating most of the solvent. Sintering may take place in a recrystallized alumina tube, and graphite dies are preferably used in the compression. Firing to remove excess lithium salt may take place in an atmosphere of air, argon, or oxygen. Specified decomposable magnesium compounds are the sulphate, hydroxide, oxalate and basic carbonate. Magnesium oxide and lithium salt may be prepared as suspensions in an inert organic liquid, e.g. isopropanol in order to minimize pick-up of CO 2  and water vapour.
Patent GB-977289-A (GB)
Title: Improvements in or relating to battery driven masted fork lift trucks
Inventor: HAUXWELL JACK
IPC: B66F9/075
Filed: 1962-06-26
Abstract: 977,289. Vechicle frames; battery-electric vehicles. RANSOMES SIMS & JEFFERIES Ltd. Sept. 26, 1963 [June 26, 1962], No. 24511/62. Headings B7D and B7H. The frame of battery-driven fork lift truck comprises longitudinal and transverse members 4, 11, 23, 48, which define the upright sides of a transverse row of compartments between and at the level of the front and rear wheels. The central compartment houses a motor which is mounted on brackets 8 secured to the front ends of the members 4 and the lateral compartments are further defined by the lower portions of front mudguards 18, floor plates 24 and doors hinged at their lower edges to the floor plates and with releasable catches which engage lugs 41, 42. The left and right-hand compartments respectively house drive motor-speed control gear and an hydraulic pump mounted on the insides of the doors. The frame further comprises side longitudinal plates 14, 44 joined by transverse plates 21, 23 and 47, 48 to and extending above frame members 4. A battery compartment is provided between the rear portions of the plates 14, 44 above members 4 and main and auxiliary ballast weights are mounted on lug 13 and brackets 12. An hydraulic liquid tank 26 of L-shape in plan is formed above the hydraulic pump and is banded by side plate 14, front mudguard 18 and its vertical extension 28 and plates 31, 33, 32 and 29 and has a cover 34 with a filler 37 and inspection plate 36 and an inlet 38 from the hydraulic pump discharging through pipe 39 at the bottom of the tank.
Patent GB-1010172-A (GB)
Title: Method of producing phosphates
IPC: C01B25/46
Filed: 1962-03-22
Abstract: The invention provides a process for the production of pure alkali metal, alkaline earth metal or ammonium primary ortho-, poly-, or metaphosphates or mixtures thereof, and recovering pure volatile mineral acid from, (a) a crude alkaline earth metal phosphate, (b) an alkali metal, alkaline earth metal or ammonium salt of a readily volatile mineral acid such as hydrohalic or nitric acid, and (c) a scarcely volatile mineral acid such as sulphuric or phosphoric acid wherein, the above components (a), (b) and (c) are used in stoichiometric proportions with a maximum deviation of \sB10% by weight, and wherein a part or all of the salt (b) is mixed with the scarcely volatile acid (c), and the readily volatile mineral acid released from the mixture is recovered in pure form while the salt solution is mixed intimately with the crude phosphate (a), and with any remainder of the salt (b) both said phosphate (a) and remainder of salt (b) having a grain size of less than 0.2 mm., the resulting mixture is allowed to react at room temperature or elevated temperature resulting from the exothermal reaction, the resulting crumbly or lumpy, moist or wet reaction mass is either (A) heated at temperature of 200-600 DEG  C. while expelling and recovering any residual readily volatile acid and the reaction product obtained extracted with at least one solvent in which phosphates are soluble, or (B) the said reaction mass is first extracted and the resultant extract heated at 200-600 DEG  C. whilst collecting any readily volatile mineral acid given off.
Patent GB-519422-A (GB)
Title: Improvements in and relating to the manufacture of halogenated derivatives of ethylene polymers
IPC: D06N3/04
Filed: 1938-08-23
Abstract: 519,422. Halogenated ethylene polymers. MYLES, J. R., JONES, F. S., BRIDSON-, and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 23, 1938, No. 24830. [Class 2 (iii)] Halogenated polyethylenes are prepared by mixing at least two halogenated polyethylenes of different halogen content. The mixing may be carried out in a mixing mill, or by mixing solutions of the initial materials, e.g., in xylene, toluene, trichlorethylene or tetrahydronaphthalene, and then either evaporating the solvent or adding a precipitant liquid, e.g., methyl or ethyl alcohol, acetone or petroleum ether. The mixtures have different properties compared with a material prepared by halogenating polyethylene to the same average halogen content as the mixture. It is advantageous to use initial materials having as wide a difference in halogen content as possible, subject to the limitation that materials having a halogen content differing by more than a certain amount are incompatible, i.e., do not yield homogeneous mixtures ; this limitation may be overcome by using three or more materials the difference of halogen content between successive materials of increasing halogen content being less than the permissible limit. The Specification contains several examples in which chlorinated products prepared from polyethylenes of specified molecular weights and containing specified proportions of chlorine are mixed in specified proportions. When polyethylenes of very high molecular weight; e.g., above 30,000, are employed, the invention may be carried out by chlorinating in carbon tetrachloride solution, whereupon after a time the reaction mixture separates into two phases, one a solution and the other a gel, continuing the chlorination, which proceeds more rapidly in the solution than in the gel, and finally evaporating the solvent or adding a precipitant liquid when a mixture of materials of different chlorine contents is obtained. The products may be used in the manufacture of leather cloth, paints or varnishes, for coating electrical wires and in the production of chemical apparatus. Specifications 471,590 and 481,515 are referred to.
Patent GB-320470-A (GB)
Title: Improvements in or relating to means for exterminating greenfly, dolphin and other insect pests on plants and trees
IPC: A01M1/22
Filed: 1928-08-29
Abstract: 320,470. Neale, J. Aug. 29, 1928. Electric killing-appliances.-Apparatus for exterminating greenfly, dolphin, aphis, and other insect pests on plants consists of a trembler coil operated bv a battery 2, the terminals 14, 15 of the secondary coil, giving a very high voltage, being connected respectively to a metal spike 21 adapted to be inserted in the earth near the plant, and to a metal plate or strip carried by an insulating handle 17 and adapted to be applied to the extremity of a part 25 of the plant infested with the pest, whereby sparking occurs momentarily between the electrode and the plant. The coil and the battery are mounted in a box provided with a carrying strap.
Patent GB-845194-A (GB)
Title: A di-tricyclodecane ether dicarboxylic acid and a process for its production
IPC: C07C51/295
Filed: 1956-08-15
Abstract: The invention comprises di-tri-cyclodecane-[5 : 2 : 1 : 02.6]-8,81-ether-4,41-dicarboxylic acid and an ether dicarboxylic acid of the formula C22H30O5 having a melting point of about 115-118 DEG C. and a process for the preparation of an ether dicarboxylic acid C22H30O5 which comprises subjecting di-tricyclodecane [5:2:1:02-6] -8:81-ether 4,41-dialdehyde or the corresponding 4,41-dimethylol compound to treatment with molten alkali metal hydroxide to yield a salt of the ether dicarboxylic acid. The di-tricyclodecane dimethylol starting material may be obtained by the process of Specification 845,195 which comprises subjecting di-tricyclodecane-4,41-[5:2:1: 02-6]-8,81-ether to the oxo synthesis to yield di-tricyclodecane [5:2:1:0:2-6]-8,81-ether-4,41-dialdehyde and catalytically hydrogenating the taller at elevated temperature and pressure.  The treatment with alkali metal hydroxide may be effected in the presence of a hydrocarbon e.g. cetane or homologens thereof.  The dicarboxylic acid salt may be decolorised in aqueous solution by catalytic hydrogenation.  Examples are furnished.
Patent GB-1136735-A (GB)
Title: Aircraft jet propulsion engine having a reverse thrust duct arrangement
Inventor: SIMONIN JEAN LUCIEN
IPC: F02K1/56
Filed: 1966-06-06
Abstract: 1,136,735. Deflecting propulsive jets on aircraft. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. 6 June, 1966 [11 June, 1965], No. 25163/66. Heading B7G. A jet propulsion engine has a jet-pipe a, b provided with at least one reverse thrust duct 1 normally closed by flaps 11 rotatable about axes 10 parallel to the axis O of the jet-pipe, but offset with respect to the medial plane of the respective flap such that the pressure of the gas in the jet-pipe a, b urges the flaps towards their closed position. The reverse thrust duct 1 is provided with reverser vanes 4 and is defined by side-plates 5, 7 and end plates 6, all of which extend outwardly to an engine nacelle c. Seals II, III, Figs. 2 and 3 (not shown) are provided along the edges of the flaps and each comprises a flexible heat-resistant metal sealing strip riveted to a strip of spring material carried by the jet-pipe a, b (III) or by the flap 11 (II). A sheet metal duct 24 traverses the duct 1 whereby cooling air which flows through the space d between the nacelle c and the jet-pipe a, b is not completely obstructed by the upstream wall 6 of the duct 1.
Patent GB-425478-A (GB)
Title: Improvements relating to motor vehicle brake mechanisms
IPC: B60T11/04
Filed: 1933-09-12
Abstract: 425,478. Brakes. BENDIX, Ltd., and IRVING, J. S., King's Road, Tyseley, Birmingham. Sept. 12, 1933, No. 25212. [Class 103 (i)] Motor vehicle brake transmission comprises an equalizing lever composed of three relatively movable parts having a common pivot axis, the part a connected to the brake pedal being mounted on the pivot d by means of a slot and operating the parts b, c, connected to the brakes by projections e. In a modified form the pivot d is mounted in slots. Temporary stops may be provided to hold the levers in position while adjusting the brakes.
Patent GB-1278560-A (GB)
Title: Printing press
IPC: B41F5/06
Filed: 1971-04-19
Abstract: 1278560 Printing machines ROLAND OFFSETMASCHINENFABRIK FABER & SCHLEICHER AG 19 April 1971 [21 March 1970] 25215/71 Heading B6C [Also in Division B8] In a printing machine wherein sheets printed on one side by a press 6 . . . 9 are conveyed by an endless gripper conveyor 13 to a press 16 printing them on the other side, and are then delivered to a stack 23 by a second endless gripper conveyor 22, the conveyor 13 is entrained around a drum 12 following the impression cylinder 9 of the first press and around the impression cylinder 15 of the press 16, and an intermediate gripper drum 21 is mounted between the two conveyors 13, 22. As shown, the press 6 . . . 9 is an offset printing press and the press 16 may be an offset or a relief printing press. In a modified arrangement, (Fig. 2, not shown), the intermediate drum 21 is an offset-blanket cylinder. Slitting knives 24 may engage the intermediate cylinder 21.
Patent GB-190542-A (GB)
Title: Improvements in electric transformers
IPC: H01F30/12
Filed: 1921-09-23
Abstract: 190,542. British Power Railway Signal Co., Ltd., Tinsley, H., and Gall, D. C., (trading as Tinsley & Co., H.). Sept. 23, 1921. Transformers.- A transformer for producing constant alternating current from a single-phase supply of constant potential comprises two sets of primary windings 1, 2, carrying currents differing in phase, the secondary winding 5 being so wound within the region surrounded by the primary windings that it is cut by the magnetic fluxes of all the primary windings in such proportions that the secondary current is in quadrature with the primary potential. A secondary current which will remain constant for large variations in the load, and which is particularly adapted to supply current to the track circuit in a railway signalling system, is thereby obtained. The phase difference between the currents in the two sets of prim. ary windings may be obtained by inserting a condenser 3 in series with one set of windings 2.
Patent GB-986247-A (GB)
Title: Stabilized composition and method of preparing same
IPC: C08K3/30
Filed: 1963-06-26
Abstract: A composition comprises an ABS polymer containing a conventional stabilizer and a small amount of zinc, calcium, barium, beryllium, magnesium, strontium or cadmium sulphide.  ABS polymers are either graft copolymers of acrylonitrile and styrene on to a polymer of butadiene or a blend of butadiene/acrylonitrile and styrene/acrylonitrile copolymers. Lithopone (a mixture of barium sulphate and zinc sulphide) may also be used. Conventional stabilizers used are organic phosphites, amines and phenols.  The preferred compound is zinc sulphide.
Patent GB-1428802-A (GB)
Title: Olefinically unsaturated sulphonamides
IPC: D06M13/203
Filed: 1973-05-29
Abstract: 1428802 Olefinically unsaturated sulphonamides BADISCHE ANILIN- & SODAFABRIK AG 29 May 1973 [30 May 1972] 25360/73 Heading C2C [Also in Division D1] The novel compounds of Formula I in which R<SP>1</SP> is alkyl, aryl or aralkyl; R<SP>2</SP> is alkylene of at least two carbon atoms, cycloalkylene or an alkylene chain interrupted by heteroatoms, e.g. O or S; R<SP>3</SP> is the radical of an α,#-olefinically unsaturated carboxylic acid or a radical of Formula II or III  and in which R<SP>1</SP> and R<SP>2</SP> are as defined above and the esters and salts of those compounds of Formula I in which R<SP>3</SP> represents a radical of a dibasic α,#-olefinically unsaturated carboxylic acid and which have therefore a free carboxy group, may be prepared by reacting an alcohol of general Formula IV with an α,#-olefinically unsaturated carboxylic acid or an acid chloride or low boiling, e.g. methyl, ester thereof.
Patent GB-274319-A (GB)
Title: Improvements in pistons for use in the cylinders of internal combustion engines
IPC: F02F3/06
Filed: 1926-10-12
Abstract: 274,319. Saunders, P. K. Oct. 12, 1926. Pistons; balancing laterally.-A piston for an internal-combustion engine comprises a head 1 of light metal such as aluminium alloy and a drawn or cast skirt 10 of steel, cast iron or bronze &c. The head is formed with diametrically opposite lugs 5, carrying the gudgeon pin, and having longitudinal grooves in which internal ribs 11 formed on flattened portions 13 of the skirt engage. The skirt is slid into position and the upper end is slotted to engage under the heads of screws 14, the skirt being further secured by screws 18 and bolts 16. The ends of the screws 14, 18 may be slit and riveted over. Alternatively, the grooves in the lugs 5 may be replaced by studs in the lugs 5 may be replaced by studs or pins engaging holes, slots or recesses in the skirt.
Patent GB-746506-A (GB)
Title: Improvements in or relating to labelling machines
IPC: B65C9/08
Filed: 1953-09-16
Abstract: 746,506. Labelling machines. BANKS, S. E. Aug. 30, 1954 [Sept. 16, 1953], No. 25548/53. Class 73. In a labelling machine, labels are fed from reciprocating label stacks 29, 29A, Figs. 2, 3, to an intermittently rotated multi-sided pick-up box 24, the sides of which have vertical apertures 25 and are previously gummed by a gumming device 26. A continuously rotatable transfer member 21 is provided with vertical depending transfer bars 23 which move into and out of the pick-up box 24 through the apertures 25 during its periods of rest to remove a label 28 covering an aperture 25 and, while retaining it by suction, to bring the label into the circular orbit of vertical labelling bars 51, 51A, Fig. 7, to which the labels are transferred by suction: the labelling bars, pivotally mounted on a continuously rotating bottle-driving member 16 then bring the labels into contact with bottles 12 engaged by projections 14 also mounted on the member 16, the labels being subsequently wiped on to the bottles by flaps, rollers or, as shown, brushes 73, 73A. The projections 14 remove the bottles 12 from the conveyer 11 on to a dead plate 17 surrounded by a guide rail 18 and after labelling, the bottles pass to a rotary discharge table 19 and then return to the conveyer 11 by a further conveyer 20. As shown the pick-up box 24, the transfer bars 23 and the labelling bars 51, 51A are designed to take both body and neck labels. Each projection 14 consists of a V-jaw 45 and labelling arms 47, 47A are pivotally mounted on the rotary member 16 in advance of each projection 14, these arms carrying respectively the labelling bars 51, 51A. Bell crank levers 66 pivoted on the member 16 each carries a follower roller 67 bearing on a stationary cam 68 and bears on a roller 69 on the upper side of an arm 47A. Springs 70, 71 urge the roller 69 against the lever 66 and the roller 67 against the cam 68. The transfer bars 23 move faster than do the labelling bars 51, 51A and thus overtake the latter to effect transfer of the labels. The cam 68 rocks the levers 47, 47A away from the bars 23 and when a bottle 12 has passed between the levers and a driving projection 14, the cam 68 permits the levers to move towards the bottle to bring the labels into contact therewith. Detector switches 96, Fig. 2, ensure that in the absence of a bottle on the conveyer, the label stacks are prevented from advancing to the pick-up box 24.