baber/WOPTO huggingface dataset:
Patent GB-751163-A (GB)
Title: Manufacture of closure caps having formed cushion pads therein
Inventor: SCHNEIDER JULIUS LEVERNE
IPC: B29C43/18
Filed: 1954-05-17
Abstract: 751,163. Moulding bottle cap seals. CONTINENTAL CAN CO., Inc. May 17, 1954. No. 14321/54. Class 87(2) [Also in Group XVII] In the forming in situ of a sealing wad in a crown closure S the closure cap is placed on a platen 15 heated by a gas burner 16 and a quantity 17 of a synthetic resin, rubber compound or other elastomer placed in the cap, a heated punch 20 pressing the material into shape and causing adhesion to the cap while a rib 24 on the punch contacts surface 12 on the cap to confine the material between the punch and the cap during compression and until the wad has been shaped, when the punch is withdrawn. Specification 606,889 [Group IV(a)] and U.S.A. Specifications 2,489,407, 2,528,506 and 2,528,507 are referred to.
Patent GB-611878-A (GB)
Title: Electric-cable-supporting device for use with a laundry electric hand iron
IPC: H02G11/00
Filed: 1946-05-13
Abstract: 611,878. Supporting electric cables. HENDERSON, W. M. May 13, 1946, No. 14346. [Class 36] A supporting device for the flex of an electric iron includes a flexible wire pillar 1 attached to an ironing table 2 by means of a clamp 5, the upper portion 7 of the pillar being bent to guide the cable towards the iron and having clips 8 for holding the cable 3. Near the base of the pillar is at least one convolution 6 adapted to increase the flexibility of the wire. A hinge may be included between the pillar 1 and the clamp 5 for stowage purposes.
Patent GB-1025371-A (GB)
Title: Improvements in or relating to rotary drum filters
IPC: D21C9/06
Filed: 1964-04-08
Abstract: 1,025,371. Forming pulp sheets. M. VERNAY. April 8, 1964 [April 8, 1963], No. 14398/64. Heading D2A. [Also in Division B1] A rotary drum 1 comprises peripheral compartments 10 which each communicate with the interior of the drum through remote-operated valves 14, and wash liquids from spray tubes 43.. 46, after filtering through a cake of unbleached paper pulp deposited on the perforate surface of the drum in its passage through vat 6, are discharged through valves 14 and collected separately by a stationary assembly of deflectors 30.. 33, 41, 42 and buckets 28, 29, 40 inside the drum, each collected liquid being recycled to preceding zone. Bucket 28, for example, collects liquid originating from spray 44, and some or all of this liquid is directed from bucket 28 to the adjacent "upstream" spray 43. Buckets 28, 29, 40 and an outlet siphon 36 discharge through one end bearing of the drum (Fig. 1, not shown), and pneumatic or hydraulic lines which operate diaphragm valves 14 (Figs. 3.. 5, not shown) enter through the other bearing. A constant vacuum is applied to the drum interior, and a rotary distributer closes each valve 14 only while its compartment 10 is in zone 50, where the paper pulp in the form of a continuous sheet is removed, valves 14 elsewhere being open. Deflectors 30.. 33, 41, 42 may be angularly adjustable. Instead of an internal vacuum, the space round the drum and over vat 6 may be pressurised.
Patent GB-438365-A (GB)
Title: Improvements in and relating to the production and use of new water soluble rhodium compounds
IPC: C25D3/50
Filed: 1934-05-12
Abstract: Water-soluble compounds containing rhodium are obtained by the extended heat treatment in water, preferably under reflux, of alkali metal- or ammonium-rhodium nitrites to effect partial elimination of the nitrite radicle.  The resulting solutions may be evaporated to obtain gelatinous or dry products.  The treatment of the double salts of rhodium with sodium, potassium, and ammonium is referred to, and it is stated that the last is actually a rhodium ammonium sodium nitrite.  Solutions of the product in water or in dilute acids such as sulphuric, nitric, or phosphoric acid, or solutions thereof made alkaline as by ammonia, or neutralized, may be used for electrodepositing rhodium. Conducting salts such as sodium sulphate, or ammonium nitrate or sulphate may be added.  When silver articles are to be made tarnish-proof, the rhodium deposit may be applied to a flash coating or heavy coating of another metal such as copper. Specifications 367,588 and 374,002, [both in Group XXXVI], are referred to.
Patent GB-1354437-A (GB)
Title: Light-sensitive colour photographic silver halide emulsion
IPC: G03C7/305
Filed: 1972-03-28
Abstract: 1354437 Photographic silver halide emulsion containing phenolic couplers KONISHIROKU PHOTO INDUSTRY CO Ltd 28 March 1972 [29 March 1971] 14464/72 Addition to 1285130 Heading G2C A light-sensitive silver halide emulsion contains a 1-alkoxyoxalyloxy -2-amidonaphthalene of the formula:- a colourless naphthol or phenol coupler of one of the formulae:- and a coloured phenol coupler of the formula:- where R in each formula may be the same or different and is substituted aryl, substituted aralkyl or substituted or unsubstituted saturated or unsaturated 1-22C aliphatic hydrocarbon group; R' is 1-6C aliphatic hydrocarbon group; R" is COCH 3 , COOC 2 H 5  or benzyloxycarbonyl; and X is H or a group capable of being split off at the time of the dye-forming reaction which does not colour the coupler, provided that either (i) R in the colourless naphtholic coupler above is substituted saturated 1-22C aliphatic hydrocarbon group or substituted or unsubstituted unsaturated 1-22C aliphatic hydrocarbon group and/or (ii) R in the coloured phenolic coupler above is substituted aryl, substituted aralkyl, substituted saturated 1-22C aliphatic hydrocarbon group or substituted or unsubstituted unsaturated 1-22C aliphatic hydrocarbon group.
Patent GB-181588-A (GB)
Title: Improvements in or relating to tyre inflating valves
IPC: B60C29/00
Filed: 1921-05-25
Abstract: 181,588. Whiteside, R. May 25, 1921. Tyre valves.-A valve for a number of longitudinal or circumferential compartments in a tyre tube has a number of conduits or pipes b with bent parts secured to the tyre tube g and parallel straight parts b' secured in or integral with a screw-threaded cylindrical casing d, which extends through the wheel rim, a non-return valve k being fitted in each straight part. The air passage p in the nut n and extension n<1> receiving the nipple r is formed with a perforated partition o, which ensures the inflation of the tube compartments to the same pressure. Discs f on the ends of the air conduits are held in firm contact with the inner tube by clamping-pieces h, i secured by a nut j on the casing d. A second nut m on the casing presses against the outside of the tyre rim, A plug x for stopping a non-return valve when the corresponding tyre compartment is punctured is stored in a screwed recess in the nut n.
Patent GB-978712-A (GB)
Title: Process for the treatment of sodium chloride
Inventor: COOKE EDWARD GRAHAM
IPC: C01D3/22
Filed: 1961-04-21
Abstract: Porous sodium chloride is made by suspending salt in a liquid containing a binding agent, inflating with the aid of air or a gas chemically non-reactive to the ingredients and drying. Binding agents may be either an alkyl cellulose, a gum, casein, or albumens.  The proportion of binding agent used is between 0.1 and 0.5% by weight of sodium chloride.  The inflating gas is either bubbled through the mixture or generated in situ by addition of a gas-producing compound which decomposes on heating, e.g. sodium bicarbonate or ammonium bicarbonate. The mixture is placed in moulds and dried in an oven at 150 DEG  C. for 12 hours.  Salt of density less than 0.7 g./c.c. is obtained.
Patent GB-866313-A (GB)
Title: Improvements in or relating to power transmission device and control
IPC: G05B19/46
Filed: 1958-05-06
Abstract: 866,313. Telemotors. THOMPSON, E. A. May 6, 1958, No. 14503/58. Class 69 (2). A plurality of hydraulic telemotor systems have cam-actuated transmitters 632a, 632b ... 632i, the cams 628 being mounted on a shaft 580 which is rotated through part of one revolution at a high speed and the rest of the revolution at a low speed. Each transmitter is connected by a closed liquid column 640a, 640b ... 640i to a receiver, the receivers being adapted to effect a variety of motions of a machine-tool in an order and at speeds determined by the arrangement of the cams 628 on shaft 580. Each receiver has a shorter strobe than the corresponding transmitter; at the end of each strobe, liquid is either exhausted to, or the column is replenished from, a low-pressure reservoir 636 via valves 634. Transmitters 632a, 632b, 632c, 632d, 632i are connected to the faces of various pistons, the other sides of which are open to accumulator pressure, which serves to return the receiver and maintain the roller of the corresponding transmitter in contact with its cam. The other four transmitters are connected to the several ends of the two cylinders 672, 676. U.S.A. Specification 2,092,721 is referred to.
Patent GB-597420-A (GB)
Title: Improvements in or relating to temperature measuring devices
IPC: G01K7/24
Filed: 1945-06-08
Abstract: 597,420. Electric thermometers. LIGHT, A. June 8, 1945, No. 14540. [Class 40 (i)] [Also in Group XXXVI] In a surface temperature measuring system a thermistor 1 is mounted in a probe 8 and provides one arm of an A.C. operated bridge. Unbalance signals are amplified, rectified, and indicated by meter MA. In operation, resistors 2a and 2b are varied to obtain balance, when associated scales read the temperature of the thermistor. Those associated with 2a giving coarse indications, and those with 2b fine indications. Fig. 2 shows a probe for soft surfaces, the rigidly mounted thermistor extending slightly beyond the casing. For hard surfaces, the thermistor may be yieldably mounted in a similar position (as in Fig. 3, not shown).
Patent GB-235865-A (GB)
Title: Improvements in and relating to voltametric measuring devices
IPC: G01R22/02
Filed: 1925-06-04
Abstract: 235,865. Siemens - Schuckertwerke- Ges. June 18, 1924, [Convention date]. Electrolytic meters in which a measuring- liquid other than mercury is used have the liquid coloured to facilitate reading. The colouring- matter is a salt of the acid present in the liquid. A coloured salt of neodymium, praseodymium, cerium, samarium, europium, dysprosium, holmium, erbium, thulium, or other rare-earth metals, or a plurality of such salts, mav be employed. An acid orthochromic phosphate may be used in a measuring-liquid containing orthophosphoric acid, or a chromic sulphate in a liquid containing sulphuric acid. The Specification as open to inspection under Sect. 91 (3) (a) states also that iodine may be used to colour phosphoric or sulphuric acid measuring-liquids. This subject-matter does not appear in the Specification as accepted.
Patent GB-779963-A (GB)
Title: Direct-coupled amplifier
IPC: H03F3/44
Filed: 1955-05-20
Abstract: 779,963. Valve amplifying circuits. CLEVITE CORPORATION. May 20, 1955 [June 10, 1954], No. 14588/55. Class 40(6) A direct-coupled push-pull amplifier comprises a first stage, valves 8, 9, with a common cathode resistor 24 and the balancing potentiometer 23, resistancecoupled over potentiometers 13, 82 and 14, 31 respectively to a second stage, valves 6, 7. This also has a common cathode resistor 15, and is resistance-coupled to a final stage comprising valves 2-5, of which 2, 5 form one series-connected pair and 3, 4 another. The load 1 is connected between the join of anode and cathode in one pair and that in the other. Each of the "upper" valves 4, 5 is driven directly from the anode of the corresponding valve 7, 6 respectively in the second stage, while each "lower" valve 2, 3 is driven from the anode of the opposite valve 7, 6 respectively in the second stage. The drive is, however, only a fraction of that applied to the "upper" valves, being reduced by means of potentiometers 19, 22 and 18, 21 respectively. Each of the resistors 19- 22 may be shunted by a condenser, Fig. 1A (not shown) to extend the frequency range over which the fraction is maintained constant. The Specification gives expressions for determining this fraction in terms of the load impedance and the parameters of the valves.
Patent GB-184300-A (GB)
Title: Improvements relating to animal traps
IPC: A01M23/08
Filed: 1921-07-05
Abstract: 184,300. Fry, W. H. July 5. 1921. Animal traps.-An animal trap comprises a box 1 having entrance holes 2, 3, 4 and' an inwardly extending passage 5 the sides of which converge towards the inner end 5<a>. The passage 5 is closed by a gravity flap 6 hinged at 7 and resting on the bottom of the box at the inner end of the passage. An aperture 6b in the flap and a hole 9 in the opposite wall of the trap give a clear view through the trap.
Patent GB-779215-A (GB)
Title: Clamping means for holding bobbin cores
IPC: B65H54/54
Filed: 1955-05-23
Abstract: 779,215. Bobbin holding means VEREINIGTE GLANZSTOFF-FABRIKEN AKT.- GES. May 23, 1955 [May 21, 1954], No. 14831/55. Class 120 (2). A clamping means for holding bobbin cores comprises a three armed support adapted to be inserted in a bobbin core, and, pivoted about the arms of the said support, clamping claws adapted to rock between two end positions in which said claws clamp the bobbin core and through a middle position in which the bobbin core is freed from the clamping action of the jaws. In an arrangement shown a three armed support 2 is carried by a spindle 1. Each of the arms of the support 2 terminates in a roll shaped head 3 each of which serves as a bearing for a clamping claw 4. Each claw 4 has at its head 6 two projections 10 and 11 each of which bears against the inside of a bobbin core 14 and centres the latter by means of a clamping action when the clamping levers 5 are rocked into one or other of the two end positions 12 or 13. When the core is in a frame the clamping lever 5 of each claw 4 is urged by one or more springs 15 into the end position 13 whereby the bobbin core is clamped. When the bobbin core 14 is to be replaced, the operative grips with three fingers the clamping levers 5 and forces all three clamping levers 5 into their other end position 12 against the pressure of the spring 15 and thus has the bobbin core firmly in its hand. Between the two end positions there is a middle position in which the bobbin core is freed from the clamping means such that the latter can be removed from the core.
Patent GB-407839-A (GB)
Title: Improved process for preparing oxalic acid
IPC: C07C51/31
Filed: 1933-05-23
Abstract: Wood-chips, sawdust or straw are thoroughly mixed with sulphuric acid at slightly elevated temperature.  The product is filtered and washed without or with dilution, and the filtrate, preferably of 40--60 per cent sulphuric acid concentration, if necessary obtained by boiling under reduced pressure, is oxidized with nitric acid or nitrogen oxides at slightly elevated temperature, 50--75 DEG  C. in presence of an oxidation catalyst such as vanadic acid.  The nitric acid may be partly regenerated by passing oxygen or an oxygen-containing gas through the liquid, with various designs of apparatus for promoting the regeneration, the gas space being larger than the liquid space. The oxalic acid obtained is very pure.  According to examples, fine wood sawdust and finwood shavings are treated as above.  The process may be combined with the manufacture of nitric acid from oxides of nitrogen, or by catalytic oxidation of ammonia, the nitrogen oxides obtained being added to those used or produced in such processes.
Patent GB-840086-A (GB)
Title: Electrical timepiece
IPC: G04C3/10
Filed: 1956-05-14
Abstract: 840,086. Transistor oscillator circuits. BULOVA WATCH CO. Inc. May 14, 1956 [May 12, 1955], No. 14867/56. Class 40 (6). [Also in Group XVIII] An electric battery driven timepiece has a tuning fork vibrator 1102, Fig. 1, which is maintained in oscillation by impulses from a driving coil D connected to the collector of a transistor to the base of which is connected a sensing or pick-up coil S, as shown in Fig. 2. The base of the transistor is positively biased by an R-C network. The alternating voltage induced in the sensing coil S overcomes the positive base bias during part of the fork vibratory cycle and the alternating voltage induced in the driving coil D which is dependent on the amplitude of fork vibration determines the collector voltage and current and so determines the magnitude of the maintaining impulses. The maintaining impulses are normally just sufficiently powerful to keep the fork vibrating at its natural frequency with an amplitude sufficient to correctly drive the ratchet wheel 1121, Fig. 1. During start-up the impulses imparted to the fork are stronger until the fork reaches the desired amplitude. If because of shock, the fork amplitude is excessive the maintaining impulses are correspondingly weaker or even cut-out until the fork resumes its normal amplitude. Specification 761,609 is referred to.
Patent GB-929560-A (GB)
Title: Improvements in microwave apparatus
Inventor: WALLING JOHN CONWAY
IPC: H01J23/48
Filed: 1962-04-17
Abstract: 929,560. Masers. MULLARD Ltd. April 17, 1962, No. 14870/62. Class 40 (9). A microwave apparatus such as a maser comprises a slow wave structure having a series of parallel conductors 2, Fig. 2, arranged in a line longitudinally of a rectangular hollow waveguide 1 and a coupling conductor 3 supported at each end and extending across the waveguide in line with the parallel conductors 2, one end of the coupling conductor 3 having a continuation forming the inner conductor of a coaxial line 4, 5 for input or output purposes and the other end of the coupling conductor having a continuation forming the inner conductor of a coaxial stub 8, 9 having a shorting member 10 which is adjustable to permit the coupling conductor 3 to be matched to the waveguide 1. The other end of the maser is similar. Two blocks of a single crystal ruby 15 and having 1 atom or 2000 atoms A1 or two blocks of Al 2 O 3  are used. Discs 17 of yttrium iron garnet act as non-reciprocal attenuators. If Al 2 O 3  is used for blocks 15, one disc 17 every second gap is sufficient. A longitudinal magnetic field is applied. The pump frequency is applied via waveguide 14, the input to 4, 5 and the output is taken from the other end. The dotted lines show alternative shapes for ooupling conductor 3. A ladder or interdigital delay line may be used instead of a comb as shown. The insulating material 7 may be at both ends of the coupling conductor 3. A further stub can be connected to the inner conductor of the input or output coaxial line. Both coaxial lines may be inside the waveguide. The material of 7 and of spacer 12 may be of polytetrafluorethylene. The coaxial line and stub are soldered to the waveguide wall at each end.
Patent GB-330380-A (GB)
Title: Improvements in or relating to gyroscopic compasses for use on aircraft
IPC: G01C19/38
Filed: 1929-05-14
Abstract: 330,380. MacMillan, D. H. T. May 14, 1929. Plane-trigonometry calculators. - Consists of apparatus for use as an attachment to, or in association with, a gyro-compass on an aircraft in order to determine the compass course which, after allowance for wind, will result in an easterly or westerly course being followed in relation to the earth. The device depends on the well-known fact that a meridional component in the speed of the aircraft, such as would result from a drift away from an E-W course, produces an error in the compass reading the magnitude of which can be determined by comparison with a magnetic compass &c. The device is shown as an attachment to a gyro-compass repeater A and comprises a rotatable ring B marked with a compass-error scale G and carrying a diametrically-arranged bridge C provided with guides D, E for a slidable plate F marked with parallel lines I representing angles of latitude and also marked with radiating lines Y representing compass errors. A carrier L, independently slidable on the guides D, E, carries a pivoted bar M and is marked with angular scales N, O, between which extends a cursor U passing over the plate F. An airspeed bar Q, pivoted about the centre of the card A, is provided with a lubber line R and with a number of apertures S, corresponding to different air speeds, through one of which is passed a pin T also passing through a slot in the arm M. In using the apparatus, the compass error due to the meridional component of the speed is determined and the ring B is turned until the corresponding graduation on the scale G is opposite the zero of the card A. The pin T is inserted in the aperture S corresponding to the known air speed, and the carrier L is moved until the cursor U passes through the point of intersection of the appropriate latitude line I and the appropriate error line Y. The bar Q is then rotated until the line W2 on the bar M is opposite the line corresponding to the compass error on the scale O. The line R then shows the compass course to steer to follow a true easterly course with the existing wind, i.e., the craft must be steered so that the graduation 90 plus or minus gyro error is opposite the line R. The device may in practice be used to maintain a course within 30 degrees on either side of east or west.
Patent GB-389318-A (GB)
Title: Improvements in pneumatic percussive tools
IPC: B25D9/14
Filed: 1932-05-26
Abstract: 389,318. Percussive tools. AKTIEBOLAGET ATLAS DIESEL, Sickle, near Stockholm. May 26, 1932, No. 15016. Convention date, May 28, 1931. [Class 124.] The return stroke of the piston of a percussive drill is made entirely by the energy stored in the air cushion formed in front of the piston. To start the tool, air from the inlet 9 passes through passages 11, 41, 43 and raises the piston 2. When this reaches the upper limit of its stroke, the valve 6 is raised by the trapped air and live air enters through passages 11, 12. The trapped air has meanwhile depressed the auxiliary valves 16, 40 closing the exhaust 21 and the front supply 43. Port 42 being very restricted the valve 43 remains depressed. Live air passing through 14 closes the valve 6 and the expanding air completes the stroke, exhaust taking place through ports 13. The return stroke is made by the air cushion 44 since port 43 is closed. In a modification the auxiliary valves are dispensed with and the starting supply to the front end is admitted by an intermediate position of the throttle valve.