baber/WOPTO huggingface dataset:
Patent GB-433381-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04M1/74
Filed: 1934-02-14
Abstract: 433,381. Telephone systems in mines. ERICSSON TELEPHONES, Ltd., 67, Kingsway, London, BROOKES, A., and WOODS, R. C., Ericsson Telephone Works, Beeston, Nottingham. Feb. 14, 1934, Nos. 4892 and 11520. [Class 40 (iv)] [See also Group XXXV] A telephone circuit S located in a mine or other place where it is essential to keep the energy as low as possible to avoid sparking at contacts is coupled to an external circuit U by means which limit the transfer of energy to the circuit S. Fig. 1 shows a coupling transformer T with a core having a high initial permeability and a low saturation point. In addition the windings may be of high resistance or series resistances R or condensers may be added. Figs. 3, 4 and 5 show a metallic connection shunted by rectifiers, the simple form of Fig. 3 being suitable only when the unsafe currents are direct and of one polarity. Fig. 6 shows a neon tube shunted across the connection.
Patent GB-700546-A (GB)
Title: Hydroperoxides
IPC: C07C407/00
Filed: 1952-02-25
Abstract: Hydroperoxides are obtained from the liquid phase oxidation of cycloaliphatic or aromatic hydrocarbons, e.g. cyclohexane, cyclohexene, methylcyclohexane methylcyclopentane and alkyl benzenes, by injecting a gas containing molecular oxygen into the liquid being oxidized, removing hydroperoxide from the reaction mixture by adsorption on a surface active solid adsorbent and recovering the hydroperoxide by elution from the adsorbent. Preferably the process is carried out by injecting air into the hydrocarbon at a temperature in the range 30-200 DEG C. under a pressure of 50 to 750 pounds/sq. inch until from 1.0 per cent - 20 per cent. of the hydrocarbon is oxidized, removing the hydroperoxide by adsorption on active alumina, recycling the unoxidized reactant to the oxidation vessel and eluting the peroxide from the active alumina with a hydroxyalkane such as methanol.  In examples (1) cyclohexane is oxidised by air at 130 DEG C. and 200 lbs./sq. inch until 1.7 per cent is converted to hydroperoxide at which point a separate water phase appears, the hydroperoxide is adsorbed on active alumina, eluted with methanol, separated by evaporating the methanol and oxidized by nitric acid in the presence of ammonium vanadate to adipic acid; (2) cyclohexene is oxidized at 30 DEG C. to cyclohexenyl hydroperoxide, and is separated and converted to adipic acid as in (1); (3) methylcycohexane is oxidized to the hydroperoxide as in (1) and the methanolic solution obtained is treated with ferrous sulphate to give a ketonic product which is oxidized to dibasic acids; (4) cyclohexane is oxidised as in (1) with variation in the conditions of temperature and time. Specification 633,354 is referred to.
Patent GB-1425092-A (GB)
Title: Gyroscope devices
IPC: G01C19/04
Filed: 1973-01-31
Abstract: 1425092 Gyroscopic apparatus GYROSYSTEMS Inc 31 Jan 1973 4941/73 Heading G1C A gyroscope device, in particular, a gyroscopic compass, comprises a gyroscope 20 mounted within a housing 19 on a two gimbal system, and means which defines a reference spin axis which is fixed relative to the housing 19, wherein the reference spin axis and the rotor spin axis are, in use, maintained coaxial or substantially parallel. The means defining the reference spin axis comprises an inertia flywheel 21 mounted on a shaft 22 which is driven by a motor 52, the gyro rotor 20 also being coupled thereto but via a universal joint 23. The inertia flywheel 21 thus provides a reference axis which is maintained stable under minor dynamic disturbances of the base or deck 14 thereby isolating the rotor 20 from the base 14. In the described embodiment, magneto resistive pick-offs 24, 25 are situated adjacent a magnet 30 carried by the rotor 20 and sense relative movement between the rotor 20 and housing 19. The resultant signals are applied to torquing motors 39, 38 mounted on frames 40, 13 so as to apply a torque to the housing 19 about shafts 15, 16 and 11, 12 respectively. The inertia flywheel, therefore, precesses so as to cause the housing 19 to follow any movement of the rotor spin axis and thereby reducing the output from pick-offs 24, 25 to zero. The initial tilting of a horizontally rotated rotor which results when the rotor 20 is not along a meridian thus causes similar tilting of the housing 19 which is detected by a pendulum 17. The output from a pendulum pickoff 17a energizes a torquing coil 26 to cause the rotor 20 to precess to the meridian, a small portion of the output from pick-up 17a, via voltage divider 28, energizing a second torquing coil 27 which causes the rotor 20 to precess in a horizontal plane thereby effecting vertical damping of the rotor 20. In order to ensure that the rotor 20 precesses toward the meridian, the torques must be applied in the vertical and horizontal axes. Any tilting of the support member 14 is, therefore, sensed by a second pendulus device 18 which applies a correction to the signals from pick-off 17a before being applied to the torquer coils 26, 27, so that the axes of effective application of the torques are rotated out of the tilted axes and into the true horizontal and vertical. The elimination of various errors is described. Intercardinal rolling error is eliminated by selecting the time constant of the pendulum 17 to be significantly longer than the reciprocal of the natural frequency of the ships roll motion. Error caused by acceleration in the north-south direction is minimized by choosing a rate of application of torquing effect due to the pendulum 17 which is as small as possible consistent with allowing the compass to settle in a reasonable time period. Velocity in the north-south direction requires a correcting voltage to be applied to torquing coils 27 proportional to V/R where V is velocity north and R is  the radius of the earth.
Patent GB-657670-A (GB)
Title: Gyroscopic stabilising apparatus
IPC: F41G5/16
Filed: 1943-03-16
Abstract: 657,670. Gyroscopic apparatus. KUIJVENHOVEN, A. W. March 16, 1943, No. 4962/44. Divided out of 657,668. [Class 97 (iii)] Precessing torques are applied to gyroscopes by means of electrical torque motors controlled by gravity-sensitive switches on the gimbal system, the torques being applied in a direction dependent on the tilt of the switch through reduction gearing and each switch effecting the passage of a steady current to cause operation of its associated motor in the appropriate direction so as to exert a steady torque, means being provided to adjust the magnitude of the steady current. An application to a gyrostabilizer of the kind described in Specification 657,668 having a gyrovertical with two torque motors each controlled by a switch and an azimuth gyro controlled by a single switch and torque motor is described. The gravitysensitive switch may be a mercury switch MS1 serving to control the phase supply to the two windings 5, 6 of the A.C. torque motor TM2, the current supply being adjusted by the rheostat 7.
Patent GB-1092695-A (GB)
Title: Derivatives of furan and their preparation
IPC: C07D307/80
Filed: 1965-02-04
Abstract: <FORM:1092695/C2/1> <FORM:1092695/C2/2> <FORM:1092695/C2/3> <FORM:1092695/C2/4> <FORM:1092695/C2/5> Novel compounds of Formula I and II where R1 is C1- 4 alkyl, R2 is C1- 4 alkyl, phenyl or phenyl substituted by one or more OH, C1- 4 aliphatic ester, C1- 4 alkoxy groups or tertiary amino-substituted C1- 4 alkoxy groups, R3 is H or C1- 4 alkoxy and R4 is H, C1- 4 alkyl or a mono- or di-carboxylic acyl group are prepared by: (i) subjecting a para-methoxy butenolide of Formula V to a Friedel-Crafts reaction with an acid halide R1COX, where X is halogen, to give compound III; (ii) condesing III with an a -haloketone R5COCH2X, where R5 is C1- 4 alkyl, phenyl or phenyl substituted with one or more C1- 4 alkoxy groups to give IV, (iii) cyclising IV by heating with mineral acid to give I in which R2 is as R5 and, if desired, dealkylating, e.g. with AlCl3, to convert alkoxy to hydroxy which may then be converted to ester, alkoxy or tertiary amino-substituted alkoxy by appropriate acylation or alkylation; (IV) if desired converting I into II in which R4 is H by reduction with alkali metal borohydride and if necessary treating with an appropriate acylating agent to give compounds in which R4 is acyl or converting R4 to alkyl by first replacing OH by halogen and then reacting with an alcohol.  The compounds of Formula III and IV are also said to be novel and numerous examples are given. Morpholine salts of compounds of Formula II in which R1 = Me and Et, R2 = Me, R3 = H and R4 = HOOC-CH2CH2-CO- are prepared in Examples 25 and 29 respectively.  The compound of Formula II in which -OR4 is replaced by Cl, R1 = Et, R2 = Me and R3 = H is prepared in Example 30 by the action of HCl on the corresponding compound in which -OR4 = OH.ALSO:Pharmaceutical compositions comprise furan compounds of formula <FORM:1092695/A5-A6/1> where R1 is C1-4 alkyl, R3 is H or C1-4 alkyl, Y is R2CO- or R2CH(OR4)-, where R2 is C1-4 alkyl, phenyl or phenyl substituted by one or more hydroxyl C1-4 aliphatic ester or C1-4 alkoxy groups, the last-named being optionally substituted by a cyclic or acyclic tertiary amino group, and R4 is H, C1-4 alkyl or a mono- or di-carboxylic acyl group (or organic or inorganic salt thereof).  The compositions may be tablets or solutions and may be administered orally or parenterally and have coronarydilatant, cardiotonic or hypotensive activity. Sulphonamide diuretics or hypotensive agents such as reserpine may also be present.
Patent GB-972658-A (GB)
Title: Improvements in or relating to the manufacture of rod-like articles
IPC: A24C5/32
Filed: 1963-02-07
Abstract: 972,658. Cigarette-making machines. AMF-SASIB S.p.A. Feb. 7, 1963 [Feb. 9, 1962], No. 5085/63. Heading A2C. A method of axially spacing cigarettes or filter-tips moving axially in succession and in endto-end abutting relation comprises applying to the leading cigarette or filter-tip of the succession an air stream moving in its direction of movement at a higher linear speed than that of the cigarette or filter-tip thereby to accelerate its speed in relation to that of the succession of cigarette or filter-tips. As shown abutting cigarettes S issuing from a continuous rod machine are passed into a guide tube 3 which opens at 103 into a converging annular nozzle 4 into which compressed air is fed through a pipe 5 provided with a regulating valve 6. Spaced from the tube 3 is a barrel 7 mounted on the end of the nozzle 4 which leads the cigarettes into the flutes of a collecting drum 8. The amount by which each cigarette is accelerated by the jet of air from nozzle 4 may be varied by adjusting the valve 6 or by variation of the distance between the tube 3 and the barrel 7.
Patent GB-542376-A (GB)
Title: Improvements relating to reciprocating screens
IPC: B07B1/28
Filed: 1940-03-19
Abstract: 542,376. Sifting-apparatus. PARKS, W. J. March 19, 1940, No. 5130. [Class 117] [Also in Group XXIV] Two screen supporting frames 2, 3, Fig. 1, having balancing movements are mounted on a base structure 1 by rubber blocks 4, 5 and are driven by conecting rods 18, 19 from a member mounted on an eccentric shaft 12. The rods are disposed at 90 degrees apart and are formed of laminations rigidly or pivotally attached at their ends so as to be capable of a lateral oscillating movement. The shaft 12 is mounted in bearings rigidly secured on the structure 1 and caries a weighted flywheel to balance out the resultant forces acting on the the structure. In a modification, the shaft may run in an eccentric bush mounted in movable bearings resiliently supported from the base structure, the amount of the ecentricity and the degree of resilience being adjusted to provide balancing conditions. The upper screen 2 has a solid plate 21 for delivering the sifted material by means of a shoot 22 to the head of the lower screen 3.
Patent GB-1092141-A (GB)
Title: Fluorine-containing carboxylic acids and the manufacture thereof
IPC: C07C51/305
Filed: 1965-02-05
Abstract: Compounds of the general formula <FORM:1092141/C3/1> wherein M is H, Na, K or NH4 and n is an integer of 2-21, are employed as emulsifying agents for the emulsion polymerization of tetrafluoroethylene.ALSO:The invention comprises compounds of the general formula <FORM:1092141/C2/1> wherein n is an integer from 2 to 21.  The compounds may be prepared by oxidizing one of the compounds of the formulae <FORM:1092141/C2/2> <FORM:1092141/C2/3> <FORM:1092141/C2/4> <FORM:1092141/C2/5> wherein Y is Br or I; X1 and X2 are selected from H, F, Cl, Br and H, being mutually exclusive in terms of F; X3 and X4 are selected from H, F, Cl, Br, I, -OH, -R, -OR, -OCOR, -ROH, -COOR and -COOH, R being C1- 3 alkyl; X5 and X6 are selected from H, Cl, Br and I, being mutually exclusive in terms of H; m is an integer of 1-10; and p is 2 or 3.  The starting materials of Formula I above are prepared by the process <FORM:1092141/C2/6> addition reaction <FORM:1092141/C2/7> The starting materials of Formula II above are prepared by the addition reaction of a compound of the general formula <FORM:1092141/C2/8> and a compound of the formula CHX1 = CX3X4.  The starting materials of Formula III above are prepared by the addition reaction of a compound of Formula V above and acetylene or by the dehydrohalogenation of a compound of Formula II above. The starting materials of Formula IV above are obtained by dehydrohalogenating a compound of the formula <FORM:1092141/C2/9> which is obtained as a by-product accompanying the production of compounds of Formula II above when the olefin employed is of the formula CH2 = CX5X6.  The compounds of Formula V above are prepared by the reaction of a compound of the formula <FORM:1092141/C2/100> with tetrafluoroethylene suitably under irradiation with ionizing radiations.
Patent GB-1524737-A (GB)
Title: Mattresses for subaqueous structures
IPC: E02B3/12
Filed: 1976-02-10
Abstract: 1524737 Preventing erosion IMPERIAL CHEMICAL INDUSTRIES Ltd 21 Jan 1977 [10 Feb 1976] 05176/76 Heading E1H [Also in Division B5] A mattress for civil engineering use, especially in sub-aqueous structures, comprises at least two plies of synthetic fabric one of which is woven and another non-woven, with fascines attached to said mattress. Fabrics of polyamides, polyesters or polyolefins may be used: the non-woven fabric may be made by adhesives, partial solvents, needlepunching or spunbonding. The layers may be stitched together. The fascines may be of conventional natural materials or may be tubes of plastic or non-woven fabric filled with cement or foamed polyurethane.
Patent GB-180030-A (GB)
Title: Machine for drilling holes in a circular or curved direction
IPC: B23B5/36
Filed: 1921-02-15
Abstract: 180,030. Willmot, A. S., and Hockly, S. Feb. 15, 1921. Boring curved cylinders.-The drill 10 is driven by a flexible shaft 6 passing through a curved sleeve 5, of smaller diameter than the drill, fixed to a framework 1 carrying the driving-gear. The work is carried by a table 3 pivoted to an arm 13 of the framework and actuated by a handle 14. Holes of different curvatures can be drilled by using sleeves of corresponding forms, the pivot 11 of the table being adjusted to suit.
Patent GB-651281-A (GB)
Title: Improvements in or relating to hinged lids
IPC: A47J36/12
Filed: 1948-02-23
Abstract: 651,281. Boxes; lids of steam cookers &c. McCURD, W. A. Feb. 23, 1948, No. 5304. Divided out of 651,260. [Group VI] [Classes 18 and 66] [Also in Group XXV] The hinged lid 12 of a hot cupboard provided at the top of a steam cooker is so counterbalanced as to have two stable positions, namely open and closed, and an unstable position between them, and the balance weight constitutes the moving element of a dashpot. The balance weight 16 is pivotally supported on the lid and consitutes the cylinder of the dashpot, and the piston rod 19 of the latter is pivotally connected to a fixed part of the structure. The dashpot is adapted to retard the closing movement of the lid. A spring 22, disposed about the lower end of the piston rod, cushions the opening movement. In. a modification the cushioning spring is located within the dashpot cylinder. Specification 651,260, [Group VI], is referred to
Patent GB-511584-A (GB)
Title: Improvements relating to the braking of wheeled vehicles
IPC: B60T1/14
Filed: 1938-02-19
Abstract: 511,584. Track brakes. ALEXANDER, T. F. N. Feb. 19, 1938, No. 5324. [Class 103 (i)] Vehicle braking means comprises one or more pivoted eccentric carriers provided with a track engaging resilient brush-like surface of wire, strip metal or material known by the registered Trade Mark "Ferodo". According to Fig. 2, a number of eccentric carriers 6 of spring steel and provided each with a brush 7 are rotatably mounted side by side on a transverse shaft 1 secured by brackets 2 to the chassis 3 of a motor vehicle. The carriers are normally held in position disengaged from the track by cables 8 attached to a winding drum at the front of the vehicle, the drum being held by a catch which can be released to allow the carriers to turn by their weight or a spring to the position shown. Flexure of the carriers is limited by engagement of a rod 15 thereon with a fixed beam 5. In a modification, the carriers are mounted on the back axle. Fig. 10 shows a pair of carriers 6e interconnected by a link 21 whereby the rearmost carrier engages the track before the forward one and in which the arrangement is such that the braking action of the carriers reacts in opposite senses on each other. In a further construction, the carriers are of helical form so that the brush surfaces gradually engage the track in the transverse as well as the longitudinal direction. In this form the turning movement of the carriers after track contact is resisted by a spring-mounted transverse beam. The track brake may be operated before or simultaneously with the ordinary brakes. The brake may be provided on aeroplanes and cycles. According to the Provisional Specification the track brake may be interconnected with the ordinary brake lever, the brush surface may be of rubber or of relatively long and short wires, and the brake may comprise a brush similar to a mat located centrally or at each side of the vehicle or an endless brush mounted on drums the rotation of which is resisted by a brake.
Patent GB-124567-A (GB)
Title: Improvements in and relating to the Propulsion of Vessels.
Inventor: GILL JAMES HERBERT WAINWRIGHT
IPC: B63H11/00
Filed: 1918-03-26
Abstract: 124,567. Gill, J. H. W. March 26, 1918. Propelling by water jets.-The inlet and discharge pipe orifices I, D of water-jet apparatus are situated below water in the forward and after open ends of longitudinal trunks, tunnels, or bilge keels B. In the form shown, the shaft X of the centrifugal pump P is horizontal. The vessel is caused to go astern or turn by a double deflecting bucket R of the Pelton-wheel type. A number of pumps may be placed abreast, in echelon, or in fore and aft groups and the axes of the pumps arranged vertically, horizontally, or inclined and either transversely or longitudinally in the vessel. When multiple pumps are used in fore and aft groups, the energy rejected in the form of velocity head in the discharge from the forward pumps is partly economized in increasing the speed of the water taken up by the after pumps when the vessel is going ahead by arranging the discharge and inlet orifices approximately in line.
Patent GB-1406973-A (GB)
Title: Apparatus for milling large radius curves
IPC: B23C3/20
Filed: 1974-02-06
Abstract: 1406973 Milling machine details; beds and frames F R GLADWIN 6 Feb 1974 05384/74 Headings B3K and B3B A machine for milling large-radius-curves 16 on workpieces 15 comprises a reciprocating worktable 13, a toolhead 25 slidable on a crossbeam 19, a pair of vertically-aligned concave and convex tracks 21, 22, on the crossbeam, a pair of co-operating slide bars 35, 36, in the toolhead, and means 43 for moving the toolhead along the crossbeam so as to mill surface 16. Tracks 21, 22, are provided with verticallyaligned concave and convex surfaces 23b, 24a and 24b, 23a and the slide bars 35, 36, can be adjusted sideways by screws 41, 40, Fig. 5, so that a selected face 37a, or 37b and 38a or 38b can be engaged by the tracks, depending on whether a convex or concave work surface 16 is required. Milling cutter 31 is driven by a motor 29 and may be arranged so that its axis lies in a horizontal plane. In operation, after each pass of the workpiece beneath the cutter, toolhead 25 is advanced along the crossbeam by motor-driven lead screw 43, ready for the next cut. Pairs of workpieces, one with a convex and the other with a concave surface can be produced by switching slide bars.
Patent GB-124873-A (GB)
Title: Improvements relating to Vulcanising Presses.
IPC: B29C35/00
Filed: 1918-03-28
Abstract: 124,873. Dunlop Rubber Co., Mac beth, C., and Willshaw, H. March 28, 1918. Vulcanizing. - Mechanical conveyance of moulds to and from the press is provided. For delivery a moving chain B' is mounted just below the level of parallel rails B. The chain is fitted with projecting lugs B<2> by which moulds are drawn forward on to a slanting plate D slotted at D<2> to permit the passage of the lugs. The curved flange D<3> directs a mould down the inclined shoot E, from which it passes into the press opening A' and is supported on the ram therein, the ram being lowered as each mould is delivered. In discharging, each mould in turn is raised above the press opening by the ram, and is moved on to the guide H by manually-operated levers or power means. It is pushed over the roller I on to the inclined plate G, the flange G<3> of which directs it downward until it rests partly on the end portion G<1> of the inclined plate and on the rails C. Thence it is drawn forward by a lug of the series attached to the moving chain C'. The mechanism may serve several presses, the inclined plates and shoots being slidable along the rails B, C.
Patent GB-608651-A (GB)
Title: Improvements in hand trucks for transporting gas cylinders and other articles
IPC: B62B1/26
Filed: 1946-02-22
Abstract: 608,651. Hand trucks for gas cylinders. LEGG, B. J., WINGFIELD, A. H. W., and VINE, T. H. Feb. 22, 1946, No. 5526. [Class 108 (i)] A hand truck has its axle and wheels C, mounted in brackets b, connected by a crossmember and secured to sleeves or slippers B able to slide along the lower section of the side frames A, as the load, e.g. a couple of gas cylinders F, F<SP>1</SP> is lowered from the vertical position in which it is received to the approximately horizontal position in which it is wheeled, in order to minimise the weight supported at the handles a. A cross-member E having semi-circular parts cut-away, and chains G, G' serve to position and secure the gas cylinders F, F<SP>1</SP>. Each side frame member A has a strut K, Fig. 5, pivoted thereto and arranged to hang with its lower end just clear of the sleeve B, thereby arresting any sudden backward tipping, but able to swing clear to permit normal inclination of the truck.