baber/WOPTO huggingface dataset:
Patent GB-376438-A (GB)
Title: Manufacture of disazo-dyestuffs
IPC: C09B35/04
Filed: 1931-05-28
Abstract: Azo dyes; regenerated celluloses, dyeing.--Disazo dyes are made by combining a 1-acidyl-amino- or 1-nitro-4-diazobenzenesulphonic acid or a derivative thereof with an end component, hydrolysing the acidyl group or reducing the nitro group, further diazotizing and coupling with an end component, the end components being alkylamino- or arylamino-derivatives of the benzene or naphthalene series in which the azo-group enters an o- or p-position to the substituted amino group, or amino-derivatives of the naphthalene series in which the azo-group enters an o-position to the free amino-group, so that after coupling the amino-group is rendered incapable of being diazotized, and at least one end component being a 2-amino-, 2-alkylamino- or 2-arylamino-8-naphthol-6-sulphonic acid coupled in acid medium. They dye regenerated celluloses in level blue shades.  In examples the following dyestuffs are described: (1) 1 - amino - 4 - nitrobenzene - 2 - sulphonic acid --> (acid) 2 : 8 : 6-acid (reduced --> (acid) 2 : 8 : 6-acid (greenish blue on viscose and cotton); 2-methylaminonaphthalene-7-sulphonic acid may also be used for the second coupling, (2) 1 - methoxy - 2 acetylamino - 5 - aminobenzene - 4 - sulphonic acid --> (acid) phenyl-2 : 8 : 6-acid (hydrolysed) --> (acid) 2-methylaminonaphthalene-7-sulphonic acid, (3) 5-amino-2-acetylamino-1-methoxybenzene-4-sulphonic acid --> (acid) 2 : 8 : 6-acid (hydrolysed) --> (acid) N-methyl-2 : 8 : 6-acid, (4) 2-n-butylaminonaphthalene-7-sulphonic acid is used as second coupling in alkaline solution instead of N-methyl-2 : 8 : 6-acid in (4), (5) dimethylaniline is used as second coupling component in acetic acid solution instead of N-methyl-2 : 8 : 6-acid in (4).  The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of amino, alkylamino and arylamino derivatives of the benzene or naphthalene series as coupling components.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1366279-A (GB)
Title: Cam mechanism
IPC: G05G21/00
Filed: 1973-04-02
Abstract: 1366279 Cams; eccentrics; ratchet gearing NATIONAL CASH REGISTER CO 2 April 1973 [10 April 1972] 15674/73 Headings F2K and F2Q To reduce cam wear, &c. in the ratchet gear for stepping a strip of material, i.e. strip of record-medium tags (not shown), as described in Specification 1,323,501, wherein a circular cam, i.e. eccentric 36 fast with a driving shaft 38 oscillates a cam follower arm 35 fast with one element of a roller clutch 34 which rotates a driven shaft 20 in one direction in a series of controlled steps, the cam 36 is arranged to oscillate the arm 35 via a sleeve 43 which is rotatably journalled by a roller bearing 44 on the cam 36 and has an extension arm 45 anchored by a link 46 which thus restricts turning movement of the sleeve 43 during rotation of the cam 36 thereby greatly reducing wear between the cam follower arm 35 and the cam assembly, i.e. sleeve 43.
Patent GB-677590-A (GB)
Title: Improvements in or relating to clamp heaters for use in hair waving
Inventor: DAVIDS RAYMOND EDWARD
IPC: A45D4/08
Filed: 1949-05-02
Abstract: 677,590. Hairdressing appliances. CALLINAN, GILES & CO., Ltd. June 23, 1950. [May 2, 1949] No. 15722/50. Divided out of 677,524. Class 131. A clamp heater for use in the falling heat system of waving hair comprises a pair of solid metal jaws, pivotally connected together and separable against the action of a spring, the jaws diminishing in cross-section towards the edges which lie adjacent the scalp and terminating in inturned beaks which meet when the clamp heater is not in use. As shown, jaws 10 which may be connected together by a hinge link 11 as described in Specification 677,524 and operated by a spring handle 12 as described in Specification 677,591 taper to a smoothly radiused beak portion 14 which ensures gripping of a large curl and rapidly loses heat when applied to a wound curl and avoids burning of the scalp. The portion 16 of the inside wall of the jaw is curved so as to press the wound curl towards the beak and keep the curls close to the scalp and the length of unwound root hair to a minimum.
Patent GB-1309866-A (GB)
Title: Floating sleeves or rings for flexible hoses
IPC: B29C44/56
Filed: 1971-05-19
Abstract: 1309866 Coated products INDUSTRIE PIRELLI SpA 19 May 1971 [20 May 1970 12 Feb 1971] 15731/71 Heading B2E A floating sleeve or ring for a flexible hose comprises a shaped body of a cellular high polymer having non-intercommunicating cells, at least part of the surface of the body being covered with a protective layer of polyurethane formed in situ, the protective layer being intimately adherent to the surface by reason of anchoring of the polyurethane to the cellular structure of the surface. Preferably the outer surface is removed before the application of the polyurethane-forming mixture. The polyurethane layer is preferably between 1 and 10 mm thick. The body may be constituted by a plurality of the preformed annular sub-members arranged axially along the flexible hose and joined together by a layer of adhesive, the polyurethane covering the layer, there being a reinforcing sheer fabric either sandwiched between the body and the polyurethane covering layer or incorporated within the thickness of the polyurethane layer.
Patent GB-218656-A (GB)
Title: Improvements in the manufacture of bi-metal objects
IPC: B23K20/227
Filed: 1924-07-01
Abstract: 218,656. Peuch, E. July 4, 1923, [Convention date]. Cased or compound forms; wire; rods and bars; plates and sheets.-Composite bars, wires, &c., consisting of an iron or steel core and a covering of copper or vice versa, are made.by inserting a zinc-coated core into a shorter sheath of covering metal, drawing or cold rolling to elongate the sheath and effect a close contact between the ports, then heating so as to press the zinc and alloy it with the copper and while the alloy is in fusion then drawing or rolling to complete the joint and elongation of the sheath and to eliminate excess alloy. In making a composite wire having a casing of copper and a core of steel, the core is coated by dipping in a bath of melted zinc, then placed in a shorter copper tube. The copper tube is first treated in a hot potash lye bath, then dipped in acid, then in borax and then dried. The steel core before coating with zinc is treated in the lye bath then in an acid bath, and after coating is wiped to remove excess of zinc and then dipped in borax. After inserting the core in the tube the whole is first drawn once to press the tube round the core. The heating is then effected in an annealing furnace at about 800‹ C. for 15 minutes, and after removal therefrom the article is passed once through rolls to eliminate excess of solder and is then drawn through dies until the proper diameter is obtained, annealing being effected at intervals. Bars &c. constructed as described may be punched, stamped, forged, rolled, &c. to form bullets for small arms, jewellery, household utensils, tableware: and toilet or lighting articles, electric conductors and articles for building construction or machines &c. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the preliminary coating of the core with zinc or copper solder electrolytically; the formation of composite articles of two or more metals or alloys of different metal such as an iron plate covered on opposite sides with copper or brass by an intermediate layer of solder by heat and pressure applied by a presser hammer or by rolling or drawing; also wires of copper or copper alloy or other metal capable of amalgamation may be first amalgamated and then inserted into a tube of gold, silver or other metal and drawn or rolled to form a composite wire; articles manufactured from composite bars, plates, &c. include also kitchen utensils such as saucepans with an outside of copper and an inside of steel. This subject-matter does not appear in the Specification as accepted.
Patent GB-236537-A (GB)
Title: Improved manufacture of cages for roller bearings with conical or cylindrical rollers
IPC: B21K1/04
Filed: 1925-06-18
Abstract: 236,537. Compagnie d'Applications. MÚcaniques. July 3, 1924, [Convention date]. Bearings.-A cage for cylindrical or conical roller bearings is formed by stamping a sheet metal blank, Fig. 3 I, into the form of a cup, Fig. 3 II, and then one side flange a<1> is finished by a punch d and a compound die e, f, Fig. 3 III. The cup bottom a<7> is then removed, Fig. 3 IV, and the second flange h is given a preliminary conical form, as shown in Fig. 3 V, by a die g, a punch i, and a centering support j. The finished form is given to the cage, by a punch n, and a compound die formed of the member e and an element e<3> separated by a divided ring m. The parts e, e<3> which have bulges e<2>, are formed in parts to permit assembly. The rollers a<5>, h<3> and the radial openings a<3> for the rollers may be formed after the stamping operation or between the operations indicated at Fig. 3 IV and Fig. 3 V. In the case of a cage for cylindrical rollers the parts e, e<3> are similar to each other and the bore of the cage is made cylindrical.
Patent GB-1185518-A (GB)
Title: Water Craft Adapted to Carry Land Vehicles.
IPC: B63H21/175
Filed: 1967-04-06
Abstract: 1,185,518. Water craft for carrying vehicles; propelling. CREATIVE PLASTICS Ltd. 6 April, 1967 [7 April, 1966], No. 15852/67. Headings B7A and B7V. In a water craft adapted to carry a selfpropelled snow-vehicle of the ski-type, a propeller 23 between floats, or pontoons, 5 on a frame 2 is driven by the engine of said vehicle through a shaft 27, gears within a case 28 and a shaft 19, the shaft 27 being within the vehicle and furnished with sprocket wheels to drive an endless track, which propels the vehicle when on land and is removed when the vehicle is mounted on the craft. A rudder 17 is coupled by a linkage system 30, 31 to a steering arm (not shown) on the vehicle for controlling a movable ski, which is detached when the vehicle is upon the craft The pontoons may be filled with a foamed plastics-material. The craft may be modified, Figs. 7, 8 and 10 (not shown), such that the propeller is coupled to the endless track aforesaid by way of sprocket-wheels (41) meshing therewith. Alternatively, the propeller may be coupled to the engine of the vehicle through a chain or clutch, and may be replaced by a pump effecting water-jet propulsion. A single rudder may be provided on each pontoon.
Patent GB-544575-A (GB)
Title: Improvements in or relating to reciprocating machines for grinding screw threads andother kindred operations
IPC: B24B19/02
Filed: 1940-12-20
Abstract: 544,575. Lathes. ATKINS, H. F. Dec. 20, 1940, No. 15865/41. Divided out of 545,998. [Class 83 (iii)] [Also in Group XXIII] In a machine, such as a screw thread grinding machine having a saddle traversed by lead screw and nut mechanism, the lead screw 7 is hollow and is provided with inlet and outlet passages 18, 16 for circulation therethrough of liquid coolant thus preventing errors due to thermal expansion of the lead screw. The work 1, supported between centres 2, 3 is ground by a wheel 10 traversed by the screw 7. Coolant is delivered by a pump 20 through a pipe 21 having a flexible connection to the working point and also having connections 23 for cooling other parts of the work. From the work, coolant flows into a channel 19 to one or more inlets 18.
Patent GB-1110927-A (GB)
Title: Switching arrangement comprising a tunnel diode
IPC: H03K3/315
Filed: 1967-04-06
Abstract: 1,110,927. Semi-conductor pulse circuits. FELTEN & GUILLEAUME FERNMELDEANLAGEN G.m.b.H. 6 April, 1967 [7 April, 1966], No. 15879/67. Heading H3T. A voltage monitoring circuit comprises a differential amplifier (such as transistors Tr1, Tr2) the differential outputs of which are interconnected via a pair of diodes D1, D2 in opposition, the series arrangement of a tunnel diode and a variable voltage source being connected between the junction of the diodes and the supply voltage. As described, when the monitored voltage U E  approaches the value of the reference voltage U v , the conductive states of transistors Tr1, Tr2 reverses, the tunnel diode changing from its high voltage to its low voltage state (or vice versa) giving a steepfronted step at the output A. The range of monitored voltage between which the tunnel diode triggers is adjustable by simultaneous variation of the emitter resistors R 9/2  or by adjustment of U1 The steps at A may be differentiated so as to provide pulses of opposite polarity to indicate whether the monitored voltage has increased or decreased in relation to the reference voltage Uv.
Patent GB-129363-A (GB)
Title: Improvements in Defending Waterways by Apparatus Discharging Gases on the Surface.
Inventor: STEINMETZ JOSEPH ALLISON
IPC: F41H9/06
Filed: 1917-11-01
Abstract: 129,363. Steinmetz, J. A. Nov. 1, 1917. Mines, marine. -Consists in protecting waterways A by means of receptacles D adapted, under distant control, to discharge extensive noxious or smoky " gaseous clouds " preventing enemy action. Some of the receptacles may be made to discharge on impact.
Patent GB-662287-A (GB)
Title: Improvements in sealing devices for continuous rod cigarette and like machines
IPC: A24C5/26
Filed: 1949-06-15
Abstract: 662,287. Cigarette-making machines. MOLINS MACHINE CO., Ltd. June 15, 1949 [June 21, 1948], No. 15974/49. Class 130. [Also in Group XXVIII] In a continuous-rod machine, a device 58 comprising a stationary wick moistens the pressing surface of a device 20 which presses together the gummed edges of the wrapper of the cigarette rod 10 emerging from the garniture, thereby preventing adhesive sticking to the device 20. As shown the device 20 comprises an endless metal band carried over rollers 21 rotated intermittently by a pawl 28 actuated by a cam 30, and water or a mixture of water and glycerine is fed from a reservoir 58 through a valve-controlled orifice 52 on to an absorbent wick 50 contacting the band 20. An electric heating element 35 dries the joint in the wrapper, and the complete pressing device is carried by a casting 24 pivoted on a spindle 38 so that it can be rotated to an inoperative position clear of the cigarette rod 10. The band 20 may be replaced by a pressing roller. Specification 240,476, [Class 99 (ii)], is referred to.
Patent GB-497064-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F27/38
Filed: 1937-06-09
Abstract: 497,064. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. June 9, 1937, No. 16017. Convention date, June 12, 1936. [Class 38 (ii)] Fifth harmonic disturbances in a three-phase transformer are prevented by dividing the core limbs longitudinally and providing means whereby the fundamental waves of the fluxes in the halves of each limb are phase displaced by 36‹ in respect of one another. In one arrangement, Fig. 1, the magnetic circuit cornprises three frame cores 12, 13, 23, arranged as shown, magnetic connections 5 being provided between these frame cores and having such magnetic reluctance that the fundamental fluxes in each pair of frame core limbs 1a, 1b, 2a, 2b, 3a, 3b have 36‹ phase difference. The connections 5 may have their reluctance adjusted to the desired value by damper windings 6 and the frames may be linked by a delta winding 4 for suppression of third harmonics. The magnetic connections may be made between the yokes of the outer core 13 and the middle points of the yokes of the inner cores 12, 23 and the delta winding 4 may be arranged on the yokes. In an alternative arrangement, the yokes and/or the limbs are divided wholly or partly by rows of shortcircuited bolts instead of by air gaps, additional bolts forming part of the delta winding which is thereby enabled to link the limb or yoke halves. In another arrangement, Fig. 6, the core yokes are solid and the limbs are subdivided a winding 4 having equal numbers of oppositely wound turns on the respective halves of each limb being supplied with an auxiliary threephase voltage in quadrature with the primary voltage and of such a value as to produce the required 36‹ phase displacement between the component fluxes in each main limb. The winding 4 may be supplied from a tertiary winding 5 arranged in star connection as shown. If the limb slots are extended into the yokes, the winding 4 may be arranged on the yokes.
Patent GB-779785-A (GB)
Title: Improvements in or relating to injection units for injecting solids into pipes containing fluid under pressure
Inventor: MAGILL JOHN ANGUS
IPC: B65G53/46
Filed: 1954-05-31
Abstract: 779,785. Reciprocating pumps. COAL INDUSTRY (PATENTS), Ltd. May 20, 1955 [May 31, 1954], No. 16040/54. Class 102(1) An injection unit for injecting solids into a pipe 5 containing liquid under pressure comprises a valve 6 and a piston 8 reciprocable in a cylinder 9 the valve 6. being rotatable to connect the cylinder either to a hopper 1 or the pipe 5. Two pistons 8 are connected by a rocking lever which is actuated by pneumatic or hydraulic pressure and the valves 6 are actuated by quadrants engaging gears 16, actuated by a hydraulic or pneumatic motor. In another embodiment four cylinders feed into, the pipe 5 and each piston is actuated by a hydraulic motor which motors are coupled in pairs, the associated valves being coupled in pairs by chain and sprocket drives. Cutting edges are provided on the valve and cylinder. The valve may be adjusted by shims and it may be frustoconical.
Patent GB-1502664-A (GB)
Title: Device for use in testing liquids for dielectric strength
IPC: G01R31/16
Filed: 1975-04-18
Abstract: 1502664 Dielectric testing J BAUR 18 April 1975 [19 April 1974] 16070/75 Heading G1U [Also in Division H1] A container 1 for receiving liquid insulants and/ or coolants for transformers, transducers or circuit breakers to be tested for dielectric strength has at least two orifices which can be shut off, e.g. by valves 5 and 6, and is formed from a tubular element whose ends are closed by covers 2 through which pass the stems 14 of two electrodes 3 forming a spark gap in the container. The covers 2 each have an annular shank 10 threaded externally for screwing into the transparent container 1 and internally for receiving a threaded ring 12 clamping to diaphragm 29 which relieves the container 1 from stresses caused by variation in the volume of liquid due to temperature fluctuations. The stem 14 passes through a clamping sleeve 15 having a roller 16 and a shank 17 with a threaded portion 18 to receive a clamping nut 19. A contact member 20 secured to the shank 17 by a set screw 21 has a transverse bore 22 for engaging a terminal 23 of a voltage source. A screw 26 or alternatively a micrometer screw passing through a helical spring 27 and engaging an axial threaded hole 24 in the stem 14 enables the length of the gap e to be adjusted. Liquid is admitted to the chamber through valve 5 and drawn off through valve 6. A motor-driven agitating means 8 is mounted in an orifice 7.
Patent GB-561403-A (GB)
Title: Improvements in or relating to the manufacture of acrolein oxime and acrylonitrile
IPC: C07C47/22
Filed: 1942-11-13
Abstract: Acrolein oxime is prepared by reacting acrolein at a temperature not exceeding 50 DEG  C. and at a pH of not less than 6.5 with hydroxylamine or a salt thereof.  When salts of hydroxylamine, such as the hydrochloride or sulphate, are used, the required pH is maintained by the addition of bases.  The oxime yields acrylonitrile by dehydration.  In examples: (1) to a solution of hydroxylamine hydrochloride in water, sodium carbonate and acrolein are added with cooling; the oxime is extracted with ether; (2) the extract is treated with acetic anhydride and, after standing, water is added; by distilling, acrylonitrile is removed as an azeotrope with water; (3) the oxime is similarly obtained using calcium carbonate as the base; using a limited amount of water, the oxime separates as an oil.  The process may be continuous, the reaction mixture being circulated and the oil removed as produced.  The dehydration may be effected in a vertical column, water being added at the top to wash the vapours of nitrile free from acetic acid.  The oxime may also be vaporized by distillation in vacuo, or by the use of an inert gaseous carrier and then passed over a dehydration catalyst such as alumina to give acrylonitrile.  Acrolein prepared from formaldehyde and acetaldehyde may be used as starting material, the reaction mixture, after removal of the oxime being acidified for recovery of formaldehyde and acetaldehyde.
Patent GB-235405-A (GB)
Title: Improvements in spring surfaces of chairs and other upholstery and the like
IPC: A47C7/35
Filed: 1924-07-04
Abstract: 235,405. Breckman, S. July 4, 1924. Spring surfaces. - Two or more groupe of springs are arranged in a common base frame c but are independent of one another at their upper ends. They are interconnected at the waists by .metal clips e and rings f at the lower ends by small coil springs g. The upper ends of the springs of each group are joined by clips h or by coil springs, but the groups are not interconnected at their upper ends.
Patent GB-129372-A (GB)
Title: Improvements in connection with Sighting Apparatus for use against Aircraft or the like.
Inventor: HILL HENRY WARBURTON
IPC: F41G5/08
Filed: 1917-11-06
Abstract: 129,372. Hill, H. W. Nov. 6, 1917. Gunnery calculators; plane-trigonometry calculators.-Relates to anti-aircraft apparatus, for determining, when the range of a target is known, the height and fuse time, of the kind comprising a sight movable in altitude and azimuth and a vertical plate movable in azimuth with the sight and marked with horizontal height lines and fuse time curves. According to the invention the sight-bar carries a device for applying an " up or down " correction according to the direction of flight of the target, such device comprising a cursor attached to one end of a wire or cord which in the zero position of the cursor is parallel to the line of sight. In the construction shown, the plate a is mounted by a base piece l to turn in the head m of a tripod or like stand. On one side, Fig. 1, the plate is marked with height lines b and on the other side, Fig. 2, with height lines and fuse time curves d. The sight-bar g, graduated in ranges, is pivoted in one corner of the plate -and on the other side, Fig. 2, is a wire t connected at one end to the axis of rotation of the sight bar and at the other end to a cursor s which is adjustable along a scale r carried by the sight bar. In use, the height is read off opposite the range graduation on the sight bar and then on the other side of the plate the fuse time is given by the curve nearest to the intersection of the wire and the determined height line.
Patent GB-354434-A (GB)
Title: An improved process for the manufacture of tar-bitumenconcrete mixtures and tar-bitumen-sand mixtures
IPC: E01C7/18
Filed: 1930-05-26
Abstract: Tar-bitumen-concrete and tar-bitumen-sand mixtures for roads &c. purposes are made by compounding ground natural asphaltic limestone, mineral substances, coal tar, and bitumen, by heating the ground natural asphaltic limestone employed as a filler with the other mineral substances before mixing with the binding medium.  If desired, the coal tar may be employed alone as the binding medium. The mineral matter is compounded according to the minimum hollow space principle.
Patent GB-1138322-A (GB)
Title: Vapour diffusion coating
IPC: C22C19/00
Filed: 1966-04-14
Abstract: 1,138,322. Coating with metals. UNION CARBIDE CORP. April 14, 1966 [April 14, 1965], No. 16309/66. Heading C7F. A metal article of e.g. Cu, Ni, Co or Fe is coated by heating at 543 to 621‹C., with the exclusion of air, in a pack containing (per cent by weight) Al 4 to 10, Cr 10 to 30, SiC 58 to 86, and a halide carrier, e.g. NH 4 Br or NH 4 Cl or Al or Ni halides, 0-2 to 1. The particle sizes are: - Al less than 149 (microns), Cr less than 150, SiC less than 840 and halide carrier less than 297.