baber/WOPTO huggingface dataset:
Patent GB-921530-A (GB)
Title: Photopolymerisable materials derived from epoxy resins for lithographic printing plates
IPC: G03F7/038
Filed: 1958-09-02
Abstract: Improved light sensitive materials are obtained by (i) reacting (a) an epoxy resin which is an organic solvent soluble polyalcohol with more than one but not more than two terminal epoxy groups with (b) a dicarboxylic acid in an amount substantially chemically equivalent to the epoxy content of the resin whereby a polyester alcohol substantially free of epoxy groups but containing a plurality of esterifiable hydroxy groups is produced (the dicarboxylic acid containing no chemical group-e.g. phenolic or amino-capable of reacting preferentially to the carboxyl groups with the epoxy groups) and (ii) esterifying the polyester alcohol thus obtained with cinnamic acid or an esterifiable derivative thereof (e.g. cinnamoyl chloride).  Compounds specified are:- (a) epichlorhydrin/bisphenol A of varying molecular weights in powder form; (b) tartaric acid.  A monobasic acid, e.g. cinnamic, may be added in stage (i) to limit the molecular weight.  Catalysts specified for stage (i) are pyridine and N,N-diethyl aniline. Solvents specified are, for stage (i) dioxane, ethylene glycol, monoethyl ether, tetralin and pyridine; and for stage (ii) cyclohexanone and toluene, with pyridine optionally added as an acid absorbent.  The materials may be light sensitized further in the usual way, e.g. with Michler's ketone (N,N,N1,N1-tetramethyl-p,p1-diamino diphenyl ketone).  Specifications 713,947, 717,708, 717,710, 717,712 and 743,455 are referred to.
Patent GB-833335-A (GB)
Title: Improvements in or relating to wheeled trolleys
IPC: B62B1/12
Filed: 1955-11-04
Abstract: 833,335. Hand trucks; collapsible vehicles. ELSAS, T. Feb. 4, 1957 [Nov. 4, 1955], No. 28259/55. Class 108(1) A hand truck has an axle tube 2 to which is secured one or two tubes 3 which telescopically house a single handle 4 or a U-shaped one. A wire frame 1 is secured to the axle tube 3 by brazing and to the tube 3 by the bent strip 5 which is provided with slots 6 for attachment of a shopping bag. An auxiliary frame 1a pivoted at 24 is provided with a sleeve 22 through which the handle 4 extends to hold it in its in-use position. A forwardly extending leg 13 is rotatably mounted in a tube 14 and is held in position by the bayonet slot 12.
Patent GB-269605-A (GB)
Title: Improvements in or relating to the treatment of products or goods of or containing cellulose acetate
IPC: D06M13/188
Filed: 1925-11-10
Abstract: 269,605. Clavel, R. Nov. 10, 1925. Yarns, treating with liquids, gases, and vapours.-Delustred yarns, threads &c. comprising cellulose acetate, are relustred by treating with a solvent or swelling agent for cellulose acetate, and afterwards treating the materials with steam under such conditions as to prevent the deposition of moisture on the goods. The steam must be dry or substantially dry, and is preferably employed under pressure. In cases where the cellulose acetate fibre contains residual solvent, particularly high 'boiling point solvent, treatment with a solvent or swelling agent may be omitted, lustre being restored by the application alone of dry or substantially drv steam. The lustre obtained closely resembles that of natural silk, the goods nevertheless retaining the bulky and voluminous character imparted by the delustring operation. Suitable solvents or swelling agents are organic acids such as acetic and formic acids, alcohols such as ethyl alcohol, esters suc'h as ethyl acetate, and salt solutions such as solution of calcium sulphocyanide. The solvent or swelling agent may be employed in 'aqueous solution. The goods may be treated w.ith a paste containing the solvent or they may be immersed, wholly or partly, in baths containing the solvent or swelling agent, and to such baths may be added dyestuffs, salts, mordants, and protective colloids; the treated goods are dried quickly under tension, and then steamed. In an example, delustred cellulose acetate yarn is immersed in dilute acetic acid at 50‹ U., quickly dried, and steamed under pressure. Specification 206,818 is referred to.
Patent GB-764011-A (GB)
Title: Improvements in or relating to shears and like apparatus
IPC: A01G3/02
Filed: 1954-10-01
Abstract: 764,011. Hinges. SENIOR, W. June 17, 1955 [Oct. 1, 1954], No. 28290/54. Class 65 (2). [Also in Group XIV] The pivot for a pair of shears has a cylindrical surface 3 rotatably supporting one blade 5, and an adjacent portion 6 having an angular cross-section and engaged in a correspondingly shaped hole in the other blade 7 ; the pivot being provided with an axial bore 12 which is open at one end and communicates with at least one laterally disposed port 14, for enabling grease inserted under pressure into the axial bore, by a grease gun 11, to emerge at or closely adjacent to the bearing surfaces. The pivot is formed with a head 1 and is screw threaded at its free end to receive a locking nut 8. In a modification, the open end of bore 12 is located at the head 1.
Patent GB-882770-A (GB)
Title: Drive means for sewing machines
IPC: D05B69/12
Filed: 1960-08-16
Abstract: 882,770. Sewing machines. FAIRWEATHER, H. G. C. (Singer Manufacturing Co.). Aug. 16, 1960, No. 28340/60. Class 112 [Also in Group XXIV] A sewing machine is driven by an electric motor mounted on the sewing machine frame by means comprising a stud mounted in the frame and arranged substantially normal to the sewing machine main shaft, an aperture in the motor slidably receiving the stud, and means for securing the motor to the frame at a point spaced from the aperture. The main shaft 5 of a sewing machine is coupled by a belt 8 to the shaft 10 of an electric motor 11 which is mounted in the standard 2 of the machine and is adjustable vertically for varying the belt tension. Shaft 10 is journalled in brackets 12, 13. Bracket 13 is formed at its upper end with a horizontal flange 16 through a hole 17 in which a fixed and depending nylon stud 18 slidably passes. Stud 18 also holds an insulating shroud 30 about the motor 11. A vertical flange 22, extending downwardly from the lower end of bracket 13, is formed with a vertical slot 23. Flange 22 is clamped adjustably between the head 26 of a nylon bush 25 which passes through slot 23, and a nylon sleeve 27 which abuts a fixed lug 28. A headed bolt 29 passes through bush 25 and screws into lug 29.
Patent GB-744807-A (GB)
Title: Improvements in or relating to cathode-ray tubes
IPC: H01J29/28
Filed: 1953-04-01
Abstract: A cathode-ray tube fluorescent screen is coated internally with a layer of magnesia 7 by first evaporating thereon a layer of magnesium and subsequently heating in an atmosphere containing oxygen, for example air, to convert the magnesium into magnesia. The layer may be less than 1000 DEG   in thickness as in Specification 744,776.
Patent GB-838836-A (GB)
Title: Improvements relating to top lifts for women's shoes
IPC: A43B21/47
Filed: 1958-09-05
Abstract: 838,836. Heels. FITZ-ON-HEEL CORPORATION. Sept. 5, 1958 [Sept. 10, 1957], No. 28505/58. Classes 17(2) and 17(3) A top lift attachment for a high heel comprises a triangular resilient metal tube 14 forcible into a circular hole 13 in the heel, and a heel lift 15 having a base and an integral triangular shank 16 which is receivable snugly in the tube and has a lengthwise rib 17 tapered from the base towards the end of the shank which deflects one wall of the tube when the shank is inserted and holds the lift firmly in place. The dimensions are such that the sharp corners of the tube 14 broach passages in the heel. Lift 15 may be moulded from plastic, rubber &c., and the tread surface knurled &c.
Patent GB-770394-A (GB)
Title: Improvements in or relating to apparatus suitable for treating liquids with moving adsorbents
IPC: B01J8/20
Filed: 1952-06-12
Abstract: <PICT:0770394/III/1> <PICT:0770394/III/2> In apparatus for effecting countercurrent contacting of liquids with a column of downwardly moving adsorbent particles in an upright contacting vessel, means are provided for uniform withdrawal of wet concentrated adsorbent and occluded liquid from the lower section of the vessel, comprising an upright symmetrical funnel-shaped member positioned centrally below the vessel and having an upper flared portion terminating at its lower end in a vertical spout portion having a throttling device, a roof member extending downwardly and inwardly over this portion to define therebetween an annular passageway closure plate across the upper end of the passageway, and a plurality of conduits extending from spaced points across the horizontal crosssectional area of the lower section of the vessel.  There are sufficient conduits so that there is less than 17 square feet of vessel horizontal cross-sectional area per conduit.  The withdrawal conduits may extend downwardly at slopes of at least 45 degrees.  The process is applicable to treating lubricating oils and petroleum fractions with adsorbents and to washing occluded oil from adsorbents with solvents such as petroleum naphtha, carbon tetrachloride, carbon disulphide or heptane.  The adsorbent used is made up of particles of size 4-100 mesh (Tyler); adsorbents referred to are Fuller's earth, bauxite, bentonite, bone char, charcoal, magnesium silicate, heat and acid activated kaolin, activated carbon, synthetic silica and alumina and silica-alumina gel.  In Fig. 1, adsorbent is fed via conduit 12 and vertical slots 15 into pipes 18 and thus into the treater 10; the particles of adsorbent fall through the liquid oil in the lower portions to the surface of the column 55.  Spent adsorbent is withdrawn through lines 37 which converge in an annular stream 84 in the flow collector 38 (Fig. 4), to form a single discharge stream 81. The flow in stream 81 is controlled by a valve in section 87; this valve may also be controlled by motor 61 actuated by motor controller 49 connected to instrument 60 which measures the pressure differential due to oil flow between taps 47 and 48.  An alternative arrangement for a collecting device is also described. Specifications 576,058, 770,392, 770,395 and U.S.A. Specification 2,188,007 are referred to.
Patent GB-862396-A (GB)
Title: A method for the preparation of hydrazine derivatives of phosphoric and thiophosphoric acids
Inventor: DEBO ARNO
IPC: C07F9/24
Filed: 1957-09-10
Abstract: Hydrazine derivatives of phosphoric and thio-phosphoric acids of the general formula R1R2P(Y)HNNR3R4 where R1 and R2 are alkoxy, aryloxy, or organic substituted amino groups, Y is O or S and R3 and R4 are H, alkyl, or aryl are obtained by intimately mixing hydrazine or an appropriate hydrazine derivative or a salt of hydrazine or of its derivative with an aqueous inorganic base solution and progressively incorporating the corresponding mono-halo-phosphoric or -thiophosphoric acid derivative into the mixture.  The organo-substituted amino groups may be primary or secondary alkyl or aryl-amino groups.  The process is suitably effected by adding the hydrazine or hydrazine derivative or salt thereof to the aqueous inorganic base solution, e.g. soda solution, and then adding the halogen phosphoric or thiophosphoric acid derivative while stirring and if required cooling.  The reaction mixture is then diluted with water and the hydrazide product separated.  When the product is a crystalline, water-insoluble product the reaction mixture may be weakly acidified before separating the product.  Examples are given for the production of (C2H5O)2 P(O) HN.NH.C6H5, (C3H7O)2 P(O) HN.NHC6H5, (n-C3H7O)2 P(O) HN.NHCH3, C6H5NH.NH(O)P[N(C2H5)2]2, (C2H5O)2 P(S) HN.NHC6H5, (n-C3H7O)2 P(O) HN.NHHC3, (C6H5O)2 P(O) HNNHCH3, (C6H5O)2 P(O) HNNH2 and (C2H5O)2 P(S) HN.NHCH3.  The products are useful as textile auxiliaries, pharmaceutical intermediates and products, and as lubricating oil additives.
Patent GB-453471-A (GB)
Title: Improvements in microporous rubber
IPC: C08L21/00
Filed: 1935-10-17
Abstract: Non-brittle microporous rubber articles such as battery separators are produced by intimately mixing with solid rubber an amount of hydrophilic colloid not substantially greater than the amount of rubber, shaping the mixture with water disseminated therein in insufficient quantity to invert the continuous rubber phase, and curing the rubber under non-evaporative conditions for the water. The hydrophilic colloid, which may be bentonite, Silurian shale, starch, water-soluble soap or casein is milled into the rubber in dry or aqueous paste form together with vulcanizing agents, fibre, a peptizing agent such as sodium silicate for the colloid, &c.  Water is then worked into the mix on a mill having corrugated rolls, the mass is shaped as by calendering, soaked in water for about 24 hours whereby it imbibes more water, bound with wet cotton sheeting and vulcanized under hot water.  The water in the vulcanized mass is removed by evaporation.  Specification 438,765 is referred to.
Patent GB-243346-A (GB)
Title: Improvements in or relating to nut-locking devices
IPC: F16B39/24
Filed: 1925-11-13
Abstract: 243,346. Valberg, G. E. Nov. 24, 1924, [Convention date]. Locking nuts.-A washer for locking nuts has a pair of piercing barbs a, b on each face, those on one face being arranged at right angles to those on the other so that the washer is flexed when the nut is tightened. The barbs. are V-shaped in plan and their side faces are steeply and slightly inclined to the face of the washer; their outlines may be curved. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also more than two barbs on each face. This subject-matter does not appear in the Specification as accepted.
Patent GB-202204-A (GB)
Title: Apparatus for the regular and certain firing of top-fired continuous and chamber kilns for clayware, by mechanical means
IPC: F27D3/00
Filed: 1922-10-23
Abstract: 202,204. Procter, J. Oct. 23, 1922. Charging.-In apparatus for supplying fuel to top-fired continuous kilns of the type described in Specification 181,090, the discs B are driven by bevel gearing b<4>, b<5> contained in a chamber isolated from the conveyer chambers D, which are of D-shaped section, open at the top, and provided with removable covers d<1>, d<2>. The conveyers C are built up in sections, which abut against and overlap one another, the sections being retained on the shafts c by set-screws c‹ in the end sections. The casings D have lugs d<3> which pass through holes in the hangers E, pins being inserted in the holes d<4>. The discs B are secured to stud-shafts b<1> by cotters b, the shafts b<1> being journaled in the hopper-supporting tray a<1>, which is provided with felt washers b<2> on which the discs B rest, access of coal dust to the bearings being thereby prevented. Lubricators b<2> are provided. Deflectors a<2> in the hopper A minimize of the weight of the fuel supported by the discs B, the holes b<6> in which are countersunk on the undersides to prevent adhesion of the fuel. The holes b<10> in the casing D are similarly countersunk, and the feed-regulating slides b<8> are retained in definite positions by pawls b<12> which engage notches on the slides. The conveyers discharge into chambers F through sockets d<5>, the chambers F being each formed with two branch pipes which are controlled by pivoted flaps f<5> set by handles f<6> and locked by nuts f<7>. Detachable pipes f<2> communicate with pipes which enter the hand feed-holes f<4> at the sides. Iron or glass lids may remain on the feed-holes f<4>. An inspection aperture d for the gear chamber is provided.
Patent GB-1383673-A (GB)
Title: Load sensing circuits
IPC: H02M7/538
Filed: 1972-06-20
Abstract: 1383673 Controlling inverters; operating discharge lamps RCA CORPORATION 20 June 1972 [30 June 1971] 28822/72 Headings H2F and H2H A circuit for supplying a discharge lamp 40 comprises an inverter 20 transformer coupled at 21, 22 to the load circuit which circuit comprises means for inhibiting the action of the inverter when no load is present in the circuit. When the load is not present, transistor 30 coupled at B with the inverter, is held in its off state since no bias potential is available, however when the load is inserted, its presence in a socket enables capacitor 44 to charge from the battery 10 via resistor 45, transformer secondary 22, the load socket, diode 42 and resistor 43. This switches on the transistor 30 to enable the inverter to operate. The rising voltage at transformer 21 charges capacitor 37 until the diac 36 breaks down and triggers triac 35 to apply the power to the load, the triac being extinguished at the end of each ¢ cycle and the above sequence starting again. In a modification, Fig. 2 (not shown), a transistor (50) has its collector-emitter path connected between the inverter and earth and its base connected to the collector of a second transistor (30) also with its emitter grounded. When the load is not present, transistor (30) is biased on by a charge on capacitor (44) charged direct from the battery so that the transistor 50 is held off. When the load is present the capacitor (44) discharges through a diode 42 and the load to earth which here is located 'at one side of the transformer secondary, thereby allowing the transistor to conduct, bias potential being derived directly from the battery. The inverter, Fig. 3 (not shown), comprises a free-running multivibrator (14) and driver and output stages (16), (18).
Patent GB-1280111-A (GB)
Title: Raft inflation mechanism
IPC: B63C9/00
Filed: 1970-06-15
Abstract: 1280111 Valves BENDIX CORP 15 June 1970 [14 July 1969] 28911/70 Heading F2V In a distributor for controlling the flow of pressurized fluid from a container to a life raft, a spring-loaded main valve 26 normally prevents flow from an inlet 14 to outlets 16, 18 and is abutted by a pin 76 the other end of which abuts a vent valve 82 on the end of a spring-loaded piston 62 to normally hold the vent valve open to vent the outlets via port 30. A cross pin 66 in the piston 62 co-operates via roller 68 with a cam slot (60) in a rotatable cam 46 which on rotation by a screw driver slot (48) or a pull cord (49) wound around the cam causes the pin 66 and piston 62 to move downwards to close the vent valve 82 on seat 80 and open main valve 26. Simultaneously a shoulder 86 on the pin 76 moves spring-loaded lever 38 away from the end of a stem 45 of a check valve 28 so that the latter, which is normally held tilted open by the lever 38, may close. A container connected to inlet 14 may be pressurized from a source connected to outlet 16 while outlet 18 is closed by a cap 92 on opening and closing the main and vent valves respectively. Afterwards the outlets are connected to inflation chambers of a life raft after the valves are returned to their normal positions.
Patent GB-533549-A (GB)
Title: Improvements in or relating to boots, shoes and like footwear
IPC: A43C15/16
Filed: 1939-10-30
Abstract: 533,549. Boots &c. GREEN, T. B. Oct. 30, 1939, No. 28958. [Class 17 (iii)] A number of small protectors 4 are detachably secured to a sole or heel by the engagement of screws 6 with threaded sockets 8 projecting into the sole &c. from plates 10 on the reverse side. The plates are prevented from turning by spikes 11, or by small pins driven through holes in them into the sole &c. or by forming the sockets 8 of square &c. section. The protectors are recessed into the sole, and may be of rubber, fibre, leather, metal etc.; they may be provided on their tread faces with gripping means to prevent slipping. Two or more bosses 8 may be associated with the one plate 10.
Patent GB-192182-A (GB)
Title: Improvements in or relating to the cooling of coke and like distillation products
IPC: C10B39/02
Filed: 1921-11-02
Abstract: 192,182. Kilburn, B. E. D., (Sulzer FrÞres Soc. Anon.). Nov. 2, 1921. Drawings to Specification. Cooling discharged materials.-In a method of cooling coke by a stream of gas, which is passed in a closed circuit through the coke and a heatexchanger such as a steam generator, the ccoling- chamber is made of considerable capacity, so that the varying demands for heat and coke can be met within wide limits. The coke is discharged into skips which are raised to the top of the cooling-chamber and there dumped. To facilitate the discharge of the cooled coke direct into trucks, the cooling-chamber is built above a rail track.
Patent GB-384035-A (GB)
Title: Improvements in electric retardation networks
IPC: H03H7/32
Filed: 1931-10-20
Abstract: 384,035. Impedance networks. LIGNES TELEGRAPHIQUES ET TELEPHONIQUES, 26, Rue de la PÛpiniÞre, Paris. Oct. 20, 1931, No. 29140. Convention date, Dec. 18, 1930. [Class 40 (iii).] Relates to retardation lines wherein all frequencies throughout a certain range are equally retarded. The Specification shows that if for an ordinary low-pass section, Fig. 4 (not shown), the duration of the transients is to be kept down, the cut-off frequency must be raised, with consequent reduotion of the retardation per section ; hence the number of sections has to be increased to produce the desired total retardation. If, however, all frequencies are equally retarded the duration of the transients is zero. This result is achieved according to the invention by means of sections, as shown in Figs. 1 and 2, wherein 3K = 2C approximately. Alternatively, (Fig. 3 not shown), the capacities ¢K may be replaced by the inherent capacity of the coils “L. The coils in each section may be wound on a simple core.
Patent GB-239409-A (GB)
Title: Improvements in or relating to connecting devices for the wire of telephone or telegraph cables
IPC: H01R4/30
Filed: 1924-12-05
Abstract: 239,409. Kvaal, A. Dec. 5, 1924. Wire couplings; binding-posts.- A connecting - member for use in a dividing- box comprises a single member 1 extending through an insulating support 6 and having one end adapted for soldering to a wire, and the other end bent to form a lug 10 for clamping to a wire by means of a screw 4. The latter end may have lateral lugs 9 to grip a nut 8, or the lug 10 may be extended to partially surround and grip the nut. Instead of the nut a lug 11, Fig. 4, may be provided having a screw-threaded hole coaxial with the hole in the lug 10.
Patent GB-464696-A (GB)
Title: Improvements in couplings for lubricators
IPC: F16N21/04
Filed: 1935-10-24
Abstract: 464,696. Lubricator couplings. PENNANT MANUFACTURING CO., Ltd., and TRYHORN, W. Oct. 24, 1935, No. 29343. [Class 99 (i)] A lubricator coupling comprises a body member or casing 5, which is slotted or forked at its lower end 6, 7 for transverse engagement with a reduced part beneath the head 9 of a nipple 8 on the part to be lubricated, a pistonlike member 10 located with the casing and provided with an axial lubricant passage 11, and a rotatable plug 14 in engagement with a thread 13 at the upper end of the casing for pressing the piston 10 into contact with the nipple 8. The passage 11, which receives lubricant from a gun through a bored stem 20 which is mounted on the piston and extends through the casing, preferably terminates in a projecting sealing lip 12, and axial movement of the plug 1 may be limited by the engagement of a set screw 17 on the casing with a peripheral groove 18 therein.