baber/WOPTO huggingface dataset:
Patent GB-726319-A (GB)
Title: Improvements in or relating to electrical servo systems
IPC: G05D3/14
Filed: 1946-05-23
Abstract: 726,319. Automatic control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 23, 1946 [Oct. 31, 1944], No. 15698/46. Class 38 (4). [Also in Group XL (c)] In an electrical servo system, hunting is reduced by adding to a pulsed misalignment signal the first and second time derivatives thereof, the derivatives being obtained by sequential charging of a group of capacitors with the pulses and applying subsequent pulses through the capacitors to the circuit utilizing the misalignment signal. through a four - position switch 13 the output of a transmitter 1 is radiated in turn by directive aerials 3, 5, 7, 9 mounted on a support 11 and having their axes inclined slightly upward, right, downward and left of a common line. Reflected pulses are received at 17, 15, rectified at 19, passed through a lowpass filter 21 and amplified at 23. The output of this amplifier is passed through an eightposition switch 25, which is driven by a motor 26 in synchronism with 13 and at half speed and is so connected that pulses from aerials 3, 7 are applied through a resistance 74, and amplifier 27 to a motor 31 controlling elevation of the support 11, pulses from aerials 5, 9 being similarly applied to a motor 37 controlling the support 11 about a vertical axis. The motor 26 also drives in synchronism switch arms 41, 43, 45, 47, 49, 51, 53, 55 and similar arms 41<SP>1</SP> and so on. The arms 41, 45 apply pulses from aerial 3 alternately to condensers 59, 63 and subsequently connect these condensers alternately to a resistance 76 to produce a current proportional to the difference between consecutive pulses from 3. The first differential of the misalignment signal is thus applied through 76, 27 and 76<SP>1</SP>, 29 to motors 31, 37. After amplification at 57, the first differential is similarly treated by switch arms 49, 51 and condensers 67, 69 to provide the second differential and this is applied to the amplifier 27 through a resistance 77. By varying the resistances 74, 76, 77 and similar resistances 74<SP>1</SP>, 76<SP>1</SP>, 77<SP>1</SP> in the " leftright " circuit, the effects of the first and second differentials of the misalignment signal can be adjusted to compensate for resistance and mass respectively of the moving parts. The transmitter 1 may have a pulse-modulated, frequency-modulated or unmodulated output.
Patent GB-792542-A (GB)
Title: Dichlorobenzene manufacture
IPC: C07C17/358
Filed: 1956-05-22
Abstract: Dichlorobenzene isomers other than m-dichlorobenzene are isomerized to m-dichlorobenzene by heating them to at least 120 DEG  C. at 650 pounds per square inch gauge or above in the presence of aluminium chloride and anhydrous hydrogen chloride.  A preferred pressure range is 700 to 1350 p.s.i. gauge.  m-Dichlorobenzene may be recovered from the initial product of the reaction by addition of an aqueous solution or dispersion of an alkali, e.g. sodium hydroxide, separation, washing and drying of the organic layer and then distillation.  Other methods such as fractional crystallization or thermal diffusion may also be used to recover pure m-dichlorobenzene. In examples: (1) commercial o-dichlorobenzene is isomerized by the process of the invention at 130 DEG  C. and 700 p.s.i.g. to a product of which the chief constituent is m-dichlorobenzene; (2) to (4) the process of (1) is repeated except that the pressure is 850, 950 and 1350 p.s.i.g., respectively; (5) a comparative experiment in which the process of (1) is performed at 15 p.s.i.g. is carried out, the yield of m-dichlorobenzene being considerably lower than in Examples (1) to (4).
Patent GB-738823-A (GB)
Title: Improvements relating to commutators
Inventor: CAMPRUBI BARTHOLOMEW
IPC: H01R43/08
Filed: 1952-06-24
Abstract: 738,823. Dynamo electric machines. HOOVER, Ltd. June 16, 1953 [June 24, 1952], No. 15901/52. Class 35. [Also in Group XXII] A radial face type commutator, Fig. 5, is made by pressing a blank of conducting material to form a generally flat cylindrical shell having a front contact face 25 and at least one projection standing out from the rear face thereof, dividing the projection or projections, if necessary, so as to provide at least one projection 27, 30 for each commutator segment, moulding a body of insulating material 32 to the rear face of the shell after distorting the projections to form a key for the insulating material, and dividing the shell into segments. A copper disc 10, Fig. 1, is inserted in the die 11 of an impact extrusion press having a hollow punch 20 with peripheral grooves 24. The copper is caused to flow into a closed annular space around a central pin 12 where it forms a tubular projection 28 and is also extruded rearwardly into the grooves 24 to form separate projections or anchoring pins 27. The forward end of the punch has radially extending ribs 23 which form grooves 26, Fig. 3 (not shown), in the shell between the projections 27. The shell is ejected from the die by an ejector 14 actuated by a plunger 17 through pins 15, and is subsequently ejected from the punch by an ejector 21. The projection 28 is then slotted in a broaching machine to provide an inner anchoring pin 30, Fig. 5, for each segment. The anchoring pins 27, 30 are then bent inwardly. The shell and a metal bush 31 are inserted in a mould and a body of synthetic resin 32 is moulded around them. Finally the shell is divided into segments by saw cuts which meet each of the radial grooves 26. If necessary the latter may extend to the full axial thickness of the finished segments, and the latter are separated by machining the front face 25 of the shell. A slot 33 is cut in each segment to receive the connecting wire. The outer projections 27 may . also be formed as a single tubular projection which is subsequently divided by broaching into separate anchoring pins. One or more than two projections may alternatively be provided for each segment. The shell may alternatively be formed by a cold upsetting process. Instead of bending the projections they may have outer heads formed thereon by upsetting.
Patent GB-895178-A (GB)
Title: Alkylation process
IPC: C07C2/62
Filed: 1960-05-05
Abstract: In the alkylation of isobutane with an olefin in the presence of a non-volatile alkylation catalyst, the total hydrocarbon feed including recycle containing isobutane as the preponderant hydrocarbon and at least 0.3% mol of propane, the lower boiling components including some isobutane and all the propane are evaporated to provide cooling for the reaction, the vapours are depropanised to recover isobutane at least part of which is recycled, and the unvaporised liquid hydrocarbon effluent from the reactor is distillatively stripped without external reflux to recover butanes overhead which are condensed and recycled.  The evaporation of low-boiling constituents may be effected in the reactor to give auto-refrigeration or after the liquid leaves the reactor for effluent refrigeration, the cooled liquid and vapour being passed through heat exchange coils in the reactor.  The whole or part of the vapours may be depropanised, effected by distillation or separation of normal hydrocarbons by a molecular sieve, and the depropanised liquid may be flushed for further cooling and to ensure complete removal of propane.  Stripping of the butanes from the product is effected in a tower to which the hydrocarbons are fed at the top, there being no reflux and preferably effects enrichment of n-butane in the residue which is further distilled to separate product alkylate.  Isobutane is p  preferably present in the total hydrocarbon to an amount of 55%-90% mol and in a mol ratio to olefin, e.g. propylene, butylene or amylene, of 1-15 : 1.  Propane may form 0.5%-15% volume of the hydrocarbons.  The catalyst may be aluminium chloride-hydrocarbon complex or sulphuric acid of 88%-94% strength in a volume ratio to hydrocarbon of 0.5-5 : 1.  The temperature may be 30 DEG F.-75 DEG F., the pressure, using auto-refrigeration, 0-30 p.s.i.g. and the residence time 1-45 minutes.  The apparatus used may be a "Stratco" contactor using effluent refrigeration or a "cascade" reactor with auto-refrigeration or may be a pump and time tank type.
Patent GB-1059819-A (GB)
Title: Spraying equipment
Inventor: SANBORN WILLIAM L
IPC: A01M7/00
Filed: 1964-04-17
Abstract: 1,059,819. Crop-spray apparatus. INTERNATIONAL STANDARD ELECTRIC CORPORATION. April 17, 1964, No. 15988/64. Heading B2F. An apparatus suitable for spraying trees or crops &c. comprises a fan unit 24, Fig. 1, provided with a fan 30 adapted to discharge air through a radial outlet 24D at a high velocity, a plurality of spray nozzles 38, Figs. 3 and 5, disposed in the path of the air blast, means for supplying compressed air to the inlet 41A of each nozzle, and means for feeding highly concentrated spray material from a tank 23 to a central tube 43 in each nozzle so that the material is mixed and atomized in a chamber 44 in each nozzle and is discharged radially through a narrow slot 45 into the said air blast. The said material is fed from the tank 23 by a metering pump 50, Fig. 1, driven from a power take-off of a tractor 21, which supports the apparatus on hydraulically actuated pickup links 22, so that the material is evenly applied in spite of variations in the speed of movement of the tractor. The flow from the pump may be cut off by the operator on the tractor as required and the pump means may be adjusted to supply the matrial to different nozzles at different rates. The material is fed from the tank 23 to the pump 50 by a mixing and circulating system including a centrifugal pump 75, Fig. 2. A supply tank 66 for compressed air, Fig. 2, is partially filled with an oil L which is carried in small quantities to the nozzles 38 and acts as a lubricant. The pressure level in the tank is maintained at a determined level by a compressor 68. A further tank 166 contains water for flushing the pump 50 and the nozzles. The fan outlet may be restricted by cover plates such as 124W and the apparatus may be fitted with skids 120. The angle of deflector plates 86 may be periodically varied to change the path of the air blast under the control of an endless chain, Fig. 4 (not shown). Figs. 3A and 3B (not shown) depict deflector units adapted to vary 'the direction of the air blast in a front to rear direction with respect to the path of travel of the apparatus.
Patent GB-219670-A (GB)
IPC: D06P1/92
Filed: 1924-07-03
Abstract: Textile fabrics and other materials, such as wool, silk, cotton, wood, feathers, hair, paper, straw, and artificial substances are dyed or printed in fast colours at ordinary atmospheric temperatures by the use of ethyleneglycol or ethylenethiodiglycol incorporated in the dye solutions or printing pastes.  The printing, dyeing, or spraying of the materials may be carried out as described in Specification 183,813, [Class 13 (ii), Dyeing, Processes &c. for]. Examples are given of printing pastes and dye solutions for cotton and half-silk with basic dyestuffs such as Setocyanine, for wool and silk with acid dyestuffs such as Acid Orange or Metanil Yellow, and of a spraying solution for cotton, half-silk, and artificial &c. materials with a dyestuff such as Safranine surfine double B. Specifications 113,955, 147,102 and 150,303, [both in Class 15 (ii), Dyeing, Processes &c. for]; 159,809, [Class 146 (iii), Writing-instruments &c.]; 187,732, and 205,166 also are referred to.ALSO:Textile fabrics and other materials, such as wool, silk, cotton, wood, feathers, hair, paper, straw and artificial substances are dyed or printed in fast colours at ordinary atmospheric temperatures by the use of ethyleneglycol or ethylenethiodiglycol incorporated in the dye solutions or printing pastes.  The printing, dyeing, or spraying of the materials may be carried out as described in Specification 183,813.  Examples are given of printing pastes and dye solutions for cotton and half-silk with basic dyestuffs such as Setocyanine, for wool and silk with acid dyestuffs such as Acid Orange or Metanil Yellow, and of a spraying solution for cotton, half-silk, and artificial &c. materials with a dyestuff such as Safranine surfine double B. Specifications 113,955, [Class 2 (iii), Dyes &c.], 147,102, 150,303, 159,809, [Class 146 (iii).  Writing instruments &c.], and 187,732, [Class 2 (iii), Dyes &c.], and 205,166 also are referred to.
Patent GB-500522-A (GB)
Title: Regulating resistance combined with a line circuit closer and interrupter
IPC: H01C10/36
Filed: 1938-05-28
Abstract: 500,522. Variable resistances. ELEKTRISCHE GLUHLAMPENFABRIKEN J. KREMENEZKY AKT.-GES. May 28, 1938, No. 16006. Convention date, June 4, 1937. [Class 37] [Also in Group XL] The operating spindle 5 'of a rheostat is formed with a groove 9 for engagement with the operating lever 7 of a switch which is thus operated by axial movement of the spindle. To accommodate this axial movement, the cylindrical resistance element 1 of the rheostat is made wide enough to be in engagement with the movable contact 3. in all positions of the spindle. In a modification, the contact 3 is fixed, and the resistance element is in the form of a drum mounted on the spindle 5.
Patent GB-130214-A (GB)
Title: Improvements in Hydraulic Hoisting Machinery.
Inventor: PEARSON THOMAS
IPC: B66B1/04
Filed: 1918-10-02
Abstract: 130,214. Pearson, T. Oct. 2, 1918. Press working valves.-In hydraulic hoisting-machinery having main valves controlling the admission of pressure to and exhaust from opposite ends of the hoisting- cylinder, and by-pass valves controlling communication between opposite ends of the cylinder, interlocking means are provided to ensure that the main valves may be moved from mid-position only when the by-pass valves are closed, and that the by-pass valves may be opened only when the main valves are in mid-position. The means consist of horizontal and vertical rods T<1>, T<2>, Fig. 6, each of which has a slot T<3>, the bottom of which when both rods are in normal position is in the same plane as the opposite rod, the rod T' being connected to the lever P<1>, Fig. 3, operating the main valves and the rod T<2> to the lever P<3> operating the by-pass valves. The main valves C, D, Fig. 5, have ports D<3> connected to the pressure-supply pipe and ports D<4> connected to the exhaust pipe, and are connected by pipes K, L<2>, K<1>, L<3> to the by-pass valves E, G, which have ports M<2>, M<8> connected to the lower and upper ends of the hoisting-cylinder.
Patent GB-903890-A (GB)
Title: Improvements in and relating to flues
Inventor: SHUTTLEWORTH DEREK
IPC: F23L13/00
Filed: 1960-05-06
Abstract: 903,890. Check draught dampers. RADIATION Ltd. April 14, 1961 [May 6, 1960], No. 16082/60. Class 126. A control means for a flue inlet, for use with a domestic gas fire, comprises a movable flap member adjacent the inlet, with either the flap member curved or the inlet having a curved chamfer, the control being such that fluctuations in flue draught act upon the flap to maintain a constant flow of mixed combustion products and air. In the embodiment shown, the chamfered end "f" of the flue inlet nozzle "d" has curved sides whose shapes may be as shown, i.e. the tangent to the top of the curve is at an angle to the vehicle, the top part of the curve is part of the circumference of a circle, and the lower part is a straight line, forming the tangent to the end of the circular arc. The flap " g " is suspended from bracket " h," which has return prongs " j," by chains " i," and has top and bottom stiffening flanges " r " and " t," and pressed down portions " s " in said top flange. Specification 765,426 is referred to. '
Patent GB-1462094-A (GB)
Title: Releasable electrical-cable connector
IPC: H01R4/64
Filed: 1974-04-11
Abstract: 1462094 Electrical connector SIEMENS AG 11 April 1974 [14 April 1973] 16319/74 Heading H2E A cable connector comprises a collet adapted to engage co-axially over a cylindrical stud, the collet being axially located and displaceable in a socket, relative movement of the socket and collet altering the internal cross-section of the collet, and a spring for biasing the collet inwardly of the socket which is adapted to receive a cable, the cable extending radially from the socket. In an embodiment the collet 19 has projections on the end of tongues for fitting into the groove 17 of the stud. The collet is released by drawing back the sleeve 25 against spring 22 using finger grip 29. The connector is used to join an earthing or current wire 28 to a medical appliance.
Patent GB-1194848-A (GB)
Title: Electrostatic Copying Machine
Inventor: KAMINSTEIN BERNARD
IPC: G03G15/28
Filed: 1968-04-04
Abstract: 1,194,848. Electrostatic copying machines. ING. C. OLIVETTI & C. S.p.A. April 4, 1968 [April 12, 1967], No.16336/68. Heading G2H. An electrostatic copying machine, wherein a document and photo-conductive copy sheet are in contact during charging and exposure, comprises pivotally joined first and second frame members each having an opposed charging housing, and illuminating means are mounted in the second frame member opposite multisectioned pads in the first frame member. Feeding and charging arrangements. A translucent original and a photo-conductively coated copy sheet are fed face downward, above and below, respectively a divider member 20, Fig.2, are gripped between drive rollers 42, 44 and charged while passing between charging housings 50 each containing transverse charging wires 52, Fig. 4a (not shown). Exposure. The copy is exposed, through the document, to light from a fluorescent lamp 60 in housing 56, the document and copy sheet being held against a transparent block 64 by a pressure pad assembly 58 which comprises Fig.4a (not shown) a plurality of separate pad units (68) each resiliently mounted on a shaft (66) and each comprising a rigid backing plate (70), a resilient pad (76) and a light absorbing sheet (77) overlying the pad. A lamp circuit 140, Fig. 7 (not shown) controls the illumination for documents of varying reflective backgrounds. The charging and exposure paths are slightly inclined to the horizontal, to define a downwardly sloping path and minimize the machine size. The separating station. Drive rollers 78,80 pass the document and copy sheet to curved plates 84, 82, of which they separate, the document leaving the machine at 18, and the copy sheet passing to a developing station 34. Wires 88, Fig. 3 (not shown) converging from the divider element 20 to the junction of plates 84, 82, assist in the separation. Development. The copy sheet passes through developer in a concave tray 102 formed in the top of a liquid toner container 100, on a shelf 90 Fig. 5 (not shown), the shelf being movable from a lower, inoperative position, for insertion and removal at the toner container, and an operative position in which the sealed container is punctured by an end (108) of a conduit 106, Fig. 5 (not shown) and by a puncture member (109), a pump (104) supplying air through the conduit to force toner into the tray 102. A float (116) regulates the toner level in the tray. Squegee rollers 118, 120 pass the developed copy sheet to its outlet 16, a fan 122 drying the sheet near its exit.
Patent GB-1024749-A (GB)
Title: Improvements in or relating to tents and like buildings
Inventor: REFFELL BRIAN RICHARD ARNOLD
IPC: E04H15/20
Filed: 1963-05-14
Abstract: 1,024,749. Tents. WALTER KIDDE CO. Ltd., Nov. 14, 1963 [May 14, 1963], No. 16401/65. Divided out of 1,024,748. Heading E1A. A tent such as disclosed in Specification 1,024,748 is provided with two fabric sections 4 releasably interconnected by a join 8 the tension on which is relieved by draw cords 7 arranged as shown.
Patent GB-219788-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28F1/08
Filed: 1923-06-25
Abstract: 219,788. Brown, C. A. June 25, 1923. Honeycomb straight-tube apparatus; tubes of special section.-The tubes 1 of a heat-exchanger have bulged ends 2, 3, so that interstitial passages are left between the body portions of the tubes when assembled, and each tube is formed or furnished with projections or distance-pieces 4 substantially away from the ends for preserving the required spacing from three or more adjacent tubes. The tubes may be of circular cross-section as shown in Fig. 3, or of any other section, with bulged ends and projections of hexagonal form as shown, or of any other shape. The projections may be interrupted as shown in Fig. 10, or may be separate and applied to the outside of the tubes as in Fig. 27, and may bear against the projections on or against the body portions of adjacent tubes. Where the projections on adjacent tubes abut, the touching parts may be secured together by hollow rivets. Specification 166,930 is referred to.
Patent GB-695878-A (GB)
Title: Improvements relating to the mounting of panes of glass and the like
IPC: A47F3/12
Filed: 1947-09-09
Abstract: 695,878. Securing glass sheets. THOMAS, S.. and THOMAS, B. A. Sept. 9, 1948 [Sept. 9, 1947], No. 16482/50. Divided out of 24797/47. Class 20(iii) A glazing clip made from resilient material such as sheet metal for securing and supporting two overlapping panes of glass to a glazing rail or bar with the panes in glass-to-glass contact at the overlap, is formed with a part d of U-section for securing the clip to a flange of an inverted Tee-section glazing bar c and with a part e which is bent up to lie against the web c<SP>2</SP> of the Tee-bar, a flange and a stop l being bent forward at right angles at one end of the part e. In use the lower pane of glass is passed up under the flange f until its upper edge abuts against the stop e. The upper pane is then placed on the lower pane with its lower edge abutting the flange f. A tongue g formed at the other end of the part e is then bent out over the surface of the upper pane to secure it against upward movement. Specification 615,646 is referred to.
Patent GB-949180-A (GB)
Title: Closure for tubes and the like
IPC: B65D47/20
Filed: 1960-05-11
Abstract: 949,180. Container closures. ETUDES, RECHERCHES, DEVELOPPEMENTS, ERD S.A. May 11, 1960 [May 13, 1959], No. 16569/60. Addition to 772,035. Heading B8T. A container closure comprises a cap 10 which can be screwed down into a sealing position (Fig. 2) or screwed back into a dispensing position (Fig. 1) and a dispenser 1 formed with a resilient rim 6 which seals against a sleeve 17 provided on the cap, and a projection 7 which seals a discharge orifice 14 in the cap when the closure is in the sealing position in which the bottom edge of the sleeve abuts a flange 4 formed on the dispenser. In a modification the dispenser is integral with the neck of the container and the sleeve forms part of the wall of the cap, an inner skirt depending from the wall of the cap to define a groove into which the rim penetrates as the cap is screwed down. The cap is held captive on the dispenser in the manner described in the parent Specification.