baber/WOPTO huggingface dataset:
Patent GB-649488-A (GB)
Title: Improvements in calculating apparatus
IPC: G06G1/10
Filed: 1948-09-23
Abstract: 649,488. Calculating-apparatus. BROOKE, E. R. Sept. 23, 1948, No. 24857. [Class 106 (i)] A calculating-apparatus comprises a graduated disc c, having radial slots m adjacent the graduations to be engaged by a stylus by which the disc is differentially set, and a plate e behind which the disc is rotatably mounted, the plate having a circular slot i for the stylus, a projection j adjacent the zero position of the disc to guide the stylus when moving in either direction into a radial slot h so as to prevent overthrow of the disc and a window n through which the disc graduations are visible. The plate is graduated on the outside of the slot i in one direction from the slot h and on the inside of the slot i in the other direction for addition and subtraction respectively, for which operation the disc is rotated in opposite directions. The inner and outer parts of the plate e are secured to the base-plate a by screws f passing through a circular block b, about which the disc c rotates, and by screws k passing through rollers respectively. A tooth s on the disc c moves a wheel p by one step as the disc c passes its zero position. The wheel p has graduations visible through a window t and is held against accidental rotation by a spring which engages the sides of a nut secured to the wheel. The disc is graduated in 64ths or other fractions and the wheel in whole numbers, or the graduations may be according to weights and measures, currency or game scores. To facilitate zeroizing the disc, the radial slot therein corresponding to zero is specially marked.
Patent GB-445750-A (GB)
Title: Improvements in soluble ink fountain pen
IPC: B43K5/03
Filed: 1935-09-06
Abstract: 445,750. Fountain pens. KINGMAN, R. B., 382, Oakwood Avenue, Orange, New Jersey, U.S.A. Sept. 6, 1935, No. 24908. [Class 146 (iii)] A soluble-ink fountain pen, of the type in which the solvent is in contact with the ink material while the pen is in the nib-upwards position, comprises a water reservoir communicating at one end with the nib and feed-bar and at the other end with mixing chamber arranged between the reservoir and an ink - storage chamber at the rear end of the barrel, and fluid conductive means between the storage chamber and reservoir. A reservoir sac 6, Fig. 1, extends from a feedbar 4 to a member 16 fitting into a collar 8 at the upper end of the barrel 1. The member 16 is formed with an internal mixing chamber 18, and is bevelled externally at 22 to prevent dripping or the collection of air bubbles at the port 21. An open channelled duct-piece 23 is wedged into the chamber 18, and extends from the port 21 and curves round to near a side wall of a storage chamber 12. The chamber 12 contains the soluble ink-materials and is screwed into the barrel 1, fitting tightly onto a coned face of the ring 8. When the pen is first filled with water (by means of the lever 30 or other means) the reservoir or feed-bar must be primed with a small quantity of the dissolved ink material. Subsequently, when the pen is reversed to non-writing position, water flows from the sac 6 into the chamber 12 and forms a thick solution which, when the pen is again reversed, flows to the sac 6 and mixes with the rest of the water to form the writing fluid. A modicum of the thick solution, however, remains in the mixing chamber 18 and is ready to mix with the fluid in the sac, or with a fresh charge of water. In a modification the mixing chamber 18 is filled with a porous material, such as felt, a wick, fibrous metal, or porous stone, and the duct-piece is omitted, In a further modification the storage and mixing chambers are slidable in the open end of the pen barrel and project therefrom, so that they can be pressed to buckle a spring, or twisted to collapse the sac 6 to fill the pen. The feed-bar 4, Fig. 10, carries an air inlet tube 49 communicating with the feed passage and a collapsable sac 52 is provided between the water reservoir 47 and the mixing chamber 37. By reciprocating or twisting the knob 53 attached to the storage chamber the reservoir can be filled. A protective cap 54 is provided.
Patent GB-616030-A (GB)
Title: Improvements in electrical transmission lines
IPC: H01P1/22
Filed: 1946-08-21
Abstract: 616,030. Wave-guides. MILLER, C. W., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Aug. 21, 1946, No. 24921. [Class 40 (viii)] [Also in Group XL (c)] In a circular wave-guide 1, a block 2 of lossy material having anisotropic properties laterally of the wave-guide is provided, having a circular aperture 3 and rotatable relatively to the guide to vary the attenuation and/or vector orientation. The hole in the block may be gradually flared out at the ends to avoid reflections. The block may be made of laminated carbon loaded fabric and be rotated by a knob 4 projecting through a slot in the side of the guide. This circular guide may be used as a junction between two rectangular guides 6 and 7.
Patent GB-443730-A (GB)
Title: Improvements in or relating to cathode ray tubes suitable for use for television and similar oscillograph purposes
IPC: H01J29/48
Filed: 1934-08-30
Abstract: 443,730. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, and YOUNG, A. J., 61, Galveston Road, Putney, both in London. Aug. 30, 1934, No. 25023. [Class 39 (i)] The cathode 1 of a tube for television &c. is held accurately in position by passing through an aperture in a transverse in sulator disc or shee 3 which is screened by an aperture( focusing electrode 6 surrounding the cath ode 1 at a point between the disc 3 and the electron emissive area of the cathode. As shown, the electrode 6 is mounted on a mica disc 9 in a groove in the Wehnelt cylinder 7, and the dished anode 8, and disc 3 of mica or steatite are carried by rods 4. The electrode 6 may be positively or negatively biassed but is preferably connected directly to the cathode inside the tube. The cylinder 7 may be positively or negatively biassed and a lowpressure gas filling may be used. Ratios of the distance a of the cathode within the cylinder 7 to the diameter b of the cylinder are specified and the distance a may be as high as ¥b. In a modification, the disc 9 is omitted and the electrode 6 is on the disc 3 ; the cylinder 7 may be omitted and several disc anodes provided. In another modification using a filament instead of the indirectly heated cathode 1, the filament is centred by the disc 9 and not by the disc 3. In a further modification suitable for a hard tube, Fig. 3 (not shown), an electron gun structure of specified dimensions is supported by additional insulator discs from the rods 4. Specification 435,566 is referred to.
Patent GB-716471-A (GB)
Title: Improvements in apparatus for measuring differential fluid pressures
IPC: G01L7/16
Filed: 1952-10-07
Abstract: 716,471. Pressure gauges. BRYANS AEROQUIPMENT, Ltd., and PEARSON, D. E. Oct. 7, 1952, No. 25094/52. Class 106 (2) An apparatus for measuring the difference between two fluid pressures comprises a body 1 of generally U-shaped form, in which co-axial cylinders 6, 7 of the same diameter are formed, one in each of the U, a single plunger one end 8 of which slides in cylinder 6 and the other end 9 of which slides in cylinder 7, means 14 for applying one of the pressures to be compared to one end of the plunger and the other of such pressures to the other end of the plunger, and means 16 associated with the exposed middle part of the plunger for measuring the difference of such pressures. As shown the means 16 comprises a scale pan including an articulated structure 18 for accommodating fortuitous misalignment of the cylinders 6 and 7. The pressure applied to the apparatus may act on the ends of the plunger through the medium of two oil volumes, the one being contained in a chamber 3 forming the upper limb of the U-shaped body and the other in a chamber 2 forming the lower limb of the U- shaped body.
Patent GB-783887-A (GB)
Title: Improvements in or relating to photographic colour development
Inventor: WILLEMS JOZEF FRANS
IPC: G03C7/413
Filed: 1954-08-30
Abstract: N : N - Diethyl - N1 - carboxymethyl - p - phenylenediamine is prepared either by refluxing together N : N - diethyl - p - phenylenediamine and ethyl monochloracetate in the presence of sodium carbonate and water to obtain N : N-diethyl - N1 - carbethoxy - methyl - p - phenylenediamine and hydrolysing by heating with aqueous HCl or by reacting N : N-diethyl-p-phenylenediamine sulphate with KCN and formaldehyde to obtain N : N-diethyl - N1 - cyanomethyl - p - phenylenediamine sulphate and hydrolysing by heating with diluted sulphuric acid.  N : N - Diethyl - N1 - a  - carboxyethyl - p - phenylenediamine is prepared by refluxing together N : N - diethyl - p - phenylenediamine and ethyl a -bromopropionate in the presence of sodium carbonate and water to obtain N : N-diethyl - N - (a  - carbethoxy) - ethyl - p - phenylenediamine and hydrolysing by heating with aqueous HCl.  N : N - Diethyl - N1 - (a  - carbmethoxy) - propyl - p - phenylenediamine and N : N - diethyl - N1 - (a  - carboxy) - propyl - p - phenylenediamine, N - (p - (a  - carbethoxy) - ethylaminophenyl) - pyrrolidine and N - (p - a  - carboxyethylaminophenyl) - pyrrolidine, 4 - diethylamino - N - (a  - carbethoxy) - ethyl - o - toluidine and 4 - diethylamino - N - (a  - carboxy) - ethyl - o - toluidine, 6 - (a  - carbethoxy) - ethylamino - N - methyl - 1 : 2 : 3 : 4 - tetrahydroquinoline and 6 - (a  - carboxy) - ethylamino - N - N - methyl - 1 : 2 : 3 : 4 - tetrahydroquinoline, N - (p - (a  - carboxy) - ethylaminophenyl) - piperidine, 4 - (N - b  - hydroxyethyl : N - ethylamino) - a  - carboxy - isopropylaniline, and 4 - N : N - diethylamino - a  - carbethoxy - n - heptadecylaniline and 4 - N : N - diethylamino - a - carboxy - n - heptadecylaniline are similarly prepared.  N : N - Diethyl - N1 - a  - carboxyethyl - p - phenylenediamine is prepared by reacting N : N-diethyl-p-phenylenediamine sulphate with KCN and acetaldehyde to obtain N : N-diethyl-N1-a  - cyanoethyl - p - phenylenediamine and hydrolysing by heating with aqueous HCl. N : N-Diethyl - N1 - (a  - cyano - a  - methyl) - ethyl - p - phenylenediamine (using acetone) and N : N-diethyl - N1 - a  - carboxy - a  - methyl) - ethyl - p - phenylenediamine are similarly prepared.
Patent GB-895557-A (GB)
Title: Improvements in indexing tables for machine tools
Inventor: CARRIE JOHN
IPC: B23Q16/06
Filed: 1958-08-05
Abstract: 895,557. Indexing. HOLT (ENGINEERS) Ltd., JAMES. Sept. 14, 1959 [Aug. 5, 1958], No. 25110/58. Class 83 (3). A pneumatically-actuated indexing table comprises a work support A secured to a spindle B, a plate E secured to the spindle having recesses e which are engaged by a pawl E<SP>1</SP>, a toothed wheel F rotatable on the spindle, which can be locked for rotation with plate E by a further pawl n<SP>3</SP>, Fig. 5, a rack g supported on rollers g<SP>2</SP> actuated by a doubleacting pneumatic cylinder G which engages with wheel F, and a quadrant H rotatable on the spindle whose required angular position is determined by a plunger K, which engages with any one of a number of recesses h<SP>3</SP> in the quadrants. A stop #<SP>1</SP> carried by wheel F engages an oil-filled dashpot M<SP>1</SP> mounted on the table base C, and a stop f on the wheel engages a similar dashpot M mounted on quadrants H, to limit the angular movement of the table A. The quadrant is rotated to bring the required recess h<SP>3</SP> in line with plunger K, by a bevel pinion h, Fig. 3, which engages bevel teeth h<SP>5</SP> on the quadrant. Pawl n<SP>3</SP> is held in engagement with a recess e on plate E by a toggle n<SP>1</SP>, n<SP>2</SP>, Fig. 5, actuated by a doubleacting pneumatic cylinder N mounted on wheel F. In operation, quadrant H is rotated and the required recess h<SP>3</SP> engaged by plunger K. Air is admitted to cylinder N to release pawl n<SP>3</SP>, and also to cylinder G, thus moving rack g to rotate wheel F anticlockwise until stop f engages dashpot m<SP>1</SP>. Air is supplied to the opposite end of cylinder N and pawl n<SP>3</SP> engages a recess e, and then air is supplied to the opposite end of cylinder G, thus moving rack g so that wheel F, plate E, and table A move clockwise until stop # on wheel F engages dashpot M on quadrant H. The quadrant can be set to enable the table A to move through an angle of 15 degrees to 90 degrees, and pawl E<SP>1</SP> prevents wheel E from slipping back when pawl n<SP>3</SP> is released. To indicate the position to which the quadrant has been set, a quadrant P, Figs. 6, 7, having the station numbers thereon is secured to a link p<SP>2</SP> pivoted on a further link p<SP>1</SP> at p. A bracket R secured to quadrant H has a pin r which engages a slot p<SP>3</SP> in link p<SP>2</SP>, so that as the quadrant H is moved angularly, member P will pivot about p and the station number can be viewed through an aperture c in base C.
Patent GB-703549-A (GB)
Title: Improvements in or relating to spectacles and deaf aid apparatus
IPC: G02C11/06
Filed: 1950-10-16
Abstract: 703,549. Spectacle frames. THOMAS, M. G. Oct. 15, 1951 [Oct. 16, 1950], No. 25139/50. Class 97(1) [Also in Group XXXIX] A support for bone-conduction hearing aid receiver is carried at the end of one wing of a spectacle frame a reinforcing metal strip b is secured to the front of a tortoise-shell, or synthetic resin frame by screws c. The same screws secure the hinges to the front. Each wing is reinforced by a core f of spring steel strip and to the ends of one, a saddle-shaped hearing aid mounting j is pivoted so as to turn about two perpendicular axes. The heads of rivets k snap into recesses in the hearing aid which is free to turn so as to fit flat against the head. The cores f in the wings are secured to the hinges by screws g. The two wings are interchangeable so that the hearing aid may be used at either side of the head.
Patent GB-1009175-A (GB)
Title: Improvements in or relating to arrangements for pneumatically actuating the discharge of liquids
IPC: B01L99/00
Filed: 1962-06-29
Abstract: 1,009,175. Raising liquids. CKD DUKLA, NARODNI PODNIK. June 29, 1962 [June 30, 1961], No. 25142/62. Addition to 961,332. Heading FIR. [Also in Division E1] The invention is a modification of the invention disclosed in the parent specification. A reservoir 6, Fig. 1, is emptied via a liquid seal 2 by applying a suction pulse through a pipe 1 to actuate a siphon 5. The liquid level in seal 2 is maintained by an overflow 3. The embodiment of Fig. 2 comprises a photometry apparatus, in which a beam of light is passed through a fixed quantity of liquid in a vessel 8 which is emptied by the application of a suction pulse to siphon 5. In the embodiment of Fig. 3, two sources 20, 22 of pulses are provided. Liquid is continuously supplied to tank 12 which supplies vessel 15, which overflows into vessel 17. When vessel 17 is full, its contents siphon out through siphon 18. The suction thereby produced in pipe 21 causes siphoning over of vessel 15, this process then repeating.
Patent GB-479953-A (GB)
Title: Improvements relating to electric circuit breakers
IPC: H01H3/32
Filed: 1936-09-15
Abstract: 479,953. Automatic circuit-breakers. DEWAR, G., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 15, 1936, No. 25164. [Class 38 (v)] To avoid hesitation or reversal of contactmovement by electromagnetic forces during closure of a circuit-breaker, the movement of the operating-lever of which is communicated to the actuating lever through trip-free mechanism, the operating-lever is connected with a flywheel which is thereby caused to rotate during the closing-operation in such a manner that if the speed of movement of the operating-lover is reduced, the continued rotation of the flywheel due to its inertia will release the trip-free mechanism. The operating-lever 7 is adapted to be coupled to the actuating-lever 5 by means of a catch 8 on the latter engaging a roller 9 on a trip-lever 10 pivoted at 11 to lever 7. Also pivoted at 11 is a link 12 which is connected to a rack-bar 13 in engagement with a pinion 18, which has a spring cushioning connection 17 with a flywheel 15 carried on shaft 16. The rack is held up to the pinion by a roller 19 carried by a casing 21 which can swing about axis 16. When 7 is lowered to close the breaker, a part 22 thereon engages and drives the link 12 and rack, so rotating the flywheel clockwise. If during this movement, 7 is unduly checked, the inertia of the flywheel causes the rack to move downwards relatively to lever 7, so that the projection 14 on link 12 engages and deflects the triplever 10. If closure proceeds normally, lever 7 reaches position 71, in which position projection 14 engages an adjustable stop 26 to prevent undesired tripping. The lever 10 can, however, be deflected by the trip-lever 29 of a trip-coil 27. The breaker may alternatively be electrically closed, and may be oil-immersed.
Patent GB-1522893-A (GB)
Title: Method of filling reactor tubes with particulate material
IPC: B01J4/00
Filed: 1976-06-17
Abstract: 1522893 Charging solid e.g. catalyst to reactor tubes SUMITOMO CHEMICAL CO Ltd 17 June 1976 [27 June 1975] 25171/76 Heading B1F In a method of charging particulate material, e.g. catalyst, to the vertical tubes of a reactor, at least one wire is inserted into each tube at an upper opening, and then gradually withdrawn as particles are charged into each tube so that the wire is not buried in the solid as the particle depth increases whereby the full velocity of the particle is decreased by the wire to prevent crushing and powdering and also a uniform bulk density is obtained. The wire may be formed regularly or irregularly in a shape which is wave-like now tooth-like square-wave-like or spiral or a construction of these.
Patent GB-678224-A (GB)
Title: Improvements in or relating to loom healds
Inventor: TAYLOR MATTHEW MICHAEL
IPC: D03C9/06
Filed: 1949-09-30
Abstract: 678,224. Healds for looms. BRITISH CELANESE, Ltd. Sept. 28, 1950 [Sept. 30, 1949; May 11, 1950], Nos. 25208/49 and 11777/50. Classes 120(iii) and 142(i) Healds are made from yarns of which some or all of the fibres are coalescible so that after coalescing a continuous coating is formed on the uncoalescible or uncoalesced part of the yarn. A single brushing operation, with a brush dipped in a solvent for the coalescible fibres, with or without the addition of paraffin wax or oil, may be necessary to separate and smooth the yarns. The coalescible fibres may be formed of cellulose acetate or other organic derivative of cellulose, and the uncoalescible fibres may be of regenerated cellulose or of cotton or worsted. Yarns of polyvinyl compounds may also be used. Continuous filaments are preferred for both the coalescible and non-coalescible portions, the latter portions being preferably filaments of high tenacity. Singles yarns may be made of fibres of coalescible material and uncoalescible material and may be used as such or may be doubled. Alternatively, multi-filament yarns of coalescible material may be doubled with multi-filament yarns of a non-coalescible material, and the resulting yarn may be further doubled. A core of non-coalescible filaments may be covered wth two layers of coalescible filaments lapped in opposite directions, or alternatively, the coalescible yarns may be applied by braiding. Braided or knitted ridge hands may contain coalescible fibres and may be compressed by a roller whilst soft. The coalescing may be effected by immersing the healds, stretched between two bars, in a solvent for the coalescible fibres. The fibres may be coalesced by heat, especially if they contain a plasticizer which facilitates fusion.
Patent GB-265497-A (GB)
Title: Improvements in portable winding or reeling apparatus for wire, ropes and the like
IPC: B65H49/32
Filed: 1926-10-11
Abstract: 265,497. Hutcheson, R. W. Oct. 11, 1926. Reels.-A portable winding or reeling machine for hose &c. comprises a collapsable drum from which the coil can be removed after collapsing by removing one of the side bars of a frame supporting the drum axle. The drum comprises segments 30 adjustable by nuts 27, and the frame bar 9 is removable so that the coil can be removed sideways, the axle 22 being supported near its middle by a support bracket 23. Wheels 19, 20 and hand grips 34, 35 are provided to make the apparatus portable. When winding wire, a roller box 37 may be provided, supporting horizontal and vertical rollers 38, 39.
Patent GB-589701-A (GB)
Title: Synthetic resinous materials
IPC: C08K3/00
Filed: 1944-12-15
Abstract: Polymethyl methacrylate is mixed with a brominated aliphatic hydrocarbon which has no unsaturated linkage.  Methyl methacrylate or the partial polymer may be polymerized in the presence of the brominated compound, of which acetylene tetrabromide and ethylene dibromide are specified.  In an example, methyl methacrylate is polymerized in aqueous emulsion in the presence of a condensation product of naphthalene sulphonic acid and formaldehyde, benzoyl peroxide, dibutyl phthalate and acetylene tetrabromide.  The compositions obtained are transparent or translucent to ordinary light, but opaque to X-rays.
Patent GB-1465804-A (GB)
Title: Stable burning smokeless solid propellant composition
IPC: C06B23/04
Filed: 1974-06-07
Abstract: 1465804 Propellants AEROJET-GENERAL CORP 7 June 1974 [7 June 1973] 25322/74 Heading C1D A propellant composition comprises a major amount of a solid inorganic oxidizing salt, a minor amount of a combustible organic resin binder, and from 0À1 to 5% by weight of an additive comprising a combination of particulate carbon and an oxide or carbide of Th, W, Si, Mo, Al, Hf, Zr, or V, the additive acting as a combustion stabilizer without leading to the formation of combustion smoke. The binder is an elastomeric polymer formed from a functionally-terminated liquid butadiene polymer, for example a hydroxy-terminated butadiene cured with a polyisocyanate, a carboxyterminated butadiene cured with an amine or epoxide, or a polybutadiene acrylonitrile-acrylic terpolymer cured with an epoxide. The specification lists suitable polyisocyanates and also diols and polyols which may be included. Thorium or iron acetylacetonate may be present as a cure catalyst. In examples, the oxidizing salt is ammonium perchlorate, the binder is a reaction product of hydroxy-terminated butadiene and toluene diisocyanate and the additive comprises carbon in the form of powder, platelets, flakes, or unbroken or broken hollow carbon spheres and zirconium carbide.
Patent GB-901901-A (GB)
Title: Improvements in factory installations
IPC: E04H5/02
Filed: 1958-08-07
Abstract: 901,901. Storing materials in bulk. HOLMAN, H. Aug. 6, 1959 [Aug. 7, 1958], No. 25422/58. Class 78 (4). A cement plant includes at least two silos A, B having a dividing wall between them and each having an inner wall 9 separated from the outer wall by an annular space. An overhead telpher grab (not shown) is provided for piling raw material against the external wall of the silo A and for loading the material on to a conveyer system 15 leading to a grinding mill 6. At the grinding mill further raw material is added and the resulting mixture is pumped back to the annular space within silo A, pneumatically when dry or by slurry pumps when wet, and then to a kiln 10 where the mixture is converted to cement clinker. This clinker is now piled against the external wall of silo B by the telpher grab or a conveyer system. Finally, the clinker is moved to a second grinding mill 16 where gypsum is added, the mixture being then pneumatically pumped to the annular space within silo B.