baber/WOPTO huggingface dataset:
Patent GB-827270-A (GB)
Title: Photographic material
IPC: G03C1/83
Filed: 1958-02-11
Abstract: Dyes of structure <FORM:0827270/IV(c)/1> where R is alkyl, R1 hydrogen, alkyl, halogen, sulpho or alkoxy; R2 alkyl; R3 alkyl, halogen, sulpho, carboxy, acylamino, sulphonamido, alkylamino or arylamino, R, R1, R2 or R3 being a group providing non-diffusing properties with colloids, are made by nitrosating a 3 - alkyl - 1 - phenyl - 5 - pyrazolone having a sulpho radical in the 1-phenyl group, reducing and diazotizing the product and coupling this to a second 5-pyrazolone containing the non-diffusing group. 3-Methyl-1-(41-sulphophenyl)-5-pyrazolone may be so nitrosated with hydrochloric acid and sodium nitrite, the nitroso compound salted out, dissolved with ammonia, reduced with sodium hydrosulphite, and the resulting amino compound diazotized with hydrochloric acid and sodium nitrite; the diazonium salt solution added to an alkaline 3 - heptadecyl - 1 - (21 - methyl - 41 - sulphophenyl) - 5 - pyrazolone and heated to effect coupling, the solution acidified, and the dye salted out.  This same diazonium salt may be coupled also with 3-methyl-1-(21-methyl-31-steroylamino - 51 - sulpho) - 5 - pyrazolone or with 3 - heptadecyl - 1 - (31 - carboxy - 41-chloro)-5-pyrazolone to make dyes of modified structure.
Patent GB-176627-A (GB)
Title: Improvements in stern well dredgers
IPC: E02F3/90
Filed: 1921-02-09
Abstract: 176,627. Lobnitz, Sir F., and Lobnitz. & Co., Ltd. Feb. 9, 1921. No Patent granted (Sealing fee not paid). Dredgers.-A stern-well dredger has the bottom inclined upwardly and rearwardly from a position 1 at or about the forward end of the well to the stern at or about the water line, and the whole or a portion 3 of the forward wall 2 of the well inclined forwardly from top to bottom.
Patent GB-525030-A (GB)
Title: Improvements in or relating to electric counting machines
IPC: G06M1/10
Filed: 1939-02-13
Abstract: 525,030. Revolution counters. ALNAES AKCIOVA SPOLECNOST, I., and INGENIORFORRETNINGEN ATLAS AKCIOVA SPOLECNOST. Feb. 13, 1939, Nos. 4617 and 4618. Convention dates, Feb. 11, 1938 and Oct. 6, 1938. [Class 40 (i)] [Also in Group XXXV] A step-by-step counter 5 operable by D.C. impulses is connected in series with rectifiers 6, 7 in the diagonal of a bridge which comprises inductances 1, 2 and is fed with A.C. by a transformer 4. One of the inductances has a magnetic circuit which is varied to unbalance the bridge and so give an impulse to the counter at each rotation of a shaft which may carry a disc 10 which is partly of magnetic and partly of non-magnetic material and is arranged in close proximity to the pole pieces of the core of the inductance. Alternatively the shaft may give a reciprocating movement to a U-shaped core which may be straight and moved in a straight line, Figs. 4 and 5 (not shown), or curved and moved in the arc of a circle, Fig. 6 (not shown). The apparatus shown forms part of a ship's log and is enclosed in a non-magnetic housing 13 which is divided by a partition 15, the compartment containing the coil being filled with insulation to protect it from the water. The partition is slotted to prevent eddy currents. The removable cores are coated with waterproof insulation.
Patent GB-471036-A (GB)
Title: Improvements in flexible gangway-bellows of railway cars
IPC: B61D17/22
Filed: 1937-02-16
Abstract: 471,036. Collapsable vestibules for railway vehicles. HAUTOT, M. Feb. 16, 1937, No. 4619. [Class 103 (iv)] A homogeneous flexible gangway bellows or vestibule between railway cars is constructed by moulding a sheet of rubber which may be prepared from latex or any other aqueous dispersion or solution of natural or synthetic rubber. The sheet may previously have been rendered porous, in which case it is coated with an impervious layer of rubber solution or latex. Preferably, the bellows is formed with thickened portions at the outer and inner folds a, b, while the lower edges have attached thereto renewable rubber strips f adapted to contact with the gangway.
Patent GB-275498-A (GB)
Title: Improvements relating to road-making plant
IPC: E01C19/05
Filed: 1927-02-18
Abstract: 275,498. Benson, I. W., and Denholm, T. D. Feb. 18, 1927. Tar macadam, plant for making. - In a portable plant for making road material, the elevator B for raising stone from the drier X to a screen or storage bin Y can be lowered for transport without disengaging the elevator drive mechanism. In the form shown, the lower end of the elevator casing is mounted in bearings on the vehicle frame which are concentric with the axis of the driving sprocket f. The elevator casing is movable over an arcuate guide l having bolt holes for securing the housing in the desired angular position.
Patent GB-730239-A (GB)
Title: Improvements relating to safety devices for projectiles
IPC: F42C15/30
Filed: 1953-02-19
Abstract: 730,239. Projectile fuzes. AKTIEBOLAGET BOFORS. Feb. 19, 1953 [Feb. 26, 1952], No. 4660/53. Class 9(1). A safety device inserted in the casing 2 of a projectile comprises a cylindrical member 1 through which extend three parallel passages 3, 4, 5, the passages 3, 5 being threaded at one end to receive plugs 8, 9. Each plug has an axial recess forming a seating for springs 11 and 12 respectively, the opposite ends of the springs being seated in cylindrical members 14, 15. The members 14, 15 have peripheral grooves 16, 17 engaging balls 18, 19 respectively, seated in a transverse passage 20. Rods 21, 22 in the passage pressing against the balls engage flatted surfaces of a member 23 in the passage 4. The member 23, which is attached to a spring 24, is provided with an eyelet 26 through which is threaded a bridge wire 27 connecting electrical contacts 28, 29 on a plate 30. The ends of the members 14, 15 remote from their associated springs are slotted to receive bars 34, 35 mounted in transverse passages 36, 37. Diametral passages 38, 39 through the members 14, 15 each containing a charge 40 are held out of alignment with passages 41 in the member 1 by the balls 18, 19. By applying a voltage to the contacts 28, 29, the wire 27 is heated and broken, whereupon the member 23 is drawn out of engagement with the rods 21, 22. The balls 18, 19 are then released and the members 14, 15 are moved forward by their springs until brought to rest by the bars 34, 35. The passages 38, 39 are then aligned with the passageways 41, and the projectiles armed so that one or both firing pins 42 can function to initiate the charges 40. The member 23 may be arranged axially in the projectile to be actuated by acceleration forces or by gas pressure instead of electrically.
Patent GB-754663-A (GB)
Title: Improvements in apparatus for mixing liquids together or with solids
Inventor: DUCKWORTH CLIFFORD
IPC: B01F27/94
Filed: 1954-02-17
Abstract: 754,663. Mixing-machines. BRADFORD DYERS' ASSOCIATION, Ltd. Feb. 17, 1955 [Feb. 17, 1954], No. 4698/54. Class 86. A vessel 1 for mixing liquids together or mixing a liquid with a solid is provided with a detachable lid 4 carrying an electric motor 5 which drives a shaft 6 carrying a hollow rotor 10. The rotor is surrounded by a casing 11. The vessel is charged with liquid through an inlet 13. When the rotor 10 rotates at high speed liquid is drawn up the central part of the vessel and as the top is thrown out on to the main body of liquid. Vanes 12 prevent liquid near the bottom of the vessel from being carried round with the rotor. At the end of the mixing the liquid is discharged through outlet 14. The rotor 10 is preferably frusto-conical tapering downwards as shown, but may be cylindrical. Heating or cooling liquid may be passed through a jacket provided if required around the vessel.
Patent GB-527703-A (GB)
Title: Improved method of and apparatus for opening or closing an electrical circuit at anypredetermined point in the cycle of an alternating current or potential therein
IPC: H01H9/56
Filed: 1939-02-13
Abstract: 527.703. Blasting. SILVER, R. S., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 13, 1939, No. 4724. [(Class 68 (i)] [Also in Group XXXVII] . An A.C. circuit is opened or closed at a switch 3 :at any predetermined point, such as the zero of the current or voltage cycle by a relay 18 operated by triggering a valve 14. The secondary 8 of a transformer, the primary of which is connected between points 1, 2 of the A.C. circuit, forms with a condenser 9 an oscillatory circuit, the phase of which relative to the primary is adjustable by a resistance 10 so as to be shiftable at least a half-period. A resistance-shunted battery 11 maintains the grid 13 at the correct negative potential as measured by voltmeter 16 and a further voltmeter 21 measures the platevolts. In operation, an oscillograph is used and resistance 10 and/or bias voltage adjusted to obtain the required point of break, the readings of 16, 21 being noted. Subsequently, when the switch 3 is to be opened, switch 19 is closed and the voltage adjusted, whereupon switch 5 is closed. The arrangement can be adapted to a D.C. circuit by impressing, by means of a transformer 30, an alternating current on the local circuit containing the switch 24 and resistance 25, the circuit 5, 7 being inductively associated with the secondary 8 and apparatus to the right thereof in Fig. 1. The negative peaks reduce the line current momentarily to the desired value, and simultaneous closure of switches 27, 5 opens switch 24 at a negative peak. The low current time may be prolonged by providing a generator of local oscillations that will beat with the line current. When used for electrical shotfiring in mines, the firing circuit is made at a current phase such that the detonators fire at a subsequent current-zero, whereby the rupture of the leads by the explosions does not cause sparking in a dangerous firedamp atmosphere.
Patent GB-1534753-A (GB)
Title: Jacquard machine pattern mechanisms
IPC: D03C3/32
Filed: 1976-02-06
Abstract: 1534753 Jacquards SULZER BROS Ltd 6 Feb 1976 [7 Feb 1975] 04740/76 Heading DIE A Jacquard pattern mechanism comprises elements 2 which are flexed in response to a control signal so that they move blocks 7 into or out of the path of longitudinally moved reading needles 8 to control the selection of hooks. The elements 2 may be electro or magneto-strictive.
Patent GB-225162-A (GB)
Title: Improvements in process and apparatus for making concrete structures centrifugally
IPC: B28B21/24
Filed: 1924-02-25
Abstract: 225,162. Watson, C. W. Nov. 20, 1923, [Convention date]. Centrifugal machines; moulding pipes and tubes.-Relates to the manufacture of non-circular concrete pipes &c. by the centrifugal process, and consists in projecting the concrete through core areas spaced apart and balancing the rotating mass. A pair of end rings A support carriers B for the mould M, which is composed of abutting sections connected by flanges 30 and bolts 35 and also through members S support a corresponding sectional core C which is furnished with suitable stays 24 and with curved members 27 adapted to be engaged by a spring locking-ring E. As shown, the core comprises perforated sections 22 and unperforated sections 23 and is furnished with plates 18 to direct the concrete through the perforated portions 22. The rings A, which are flanged at 34 and are connected by adjustable tie-bolts 13 are furnished with surfaces 16 engaging supporting and driving rollers 3 which are carried bv adjustable pedestals P. The drive is imparted through a shaft 4 and cone gear 45, 48 adjustable through a handwheel 50 and screw 47. Balancing of the rotary mould 4 is effected by masses 31 secured by bolts 32 &c. Reinforcements of wire R or mesh F, such as described in Specifications 215,296 and 215,298, [Class 99 (ii), Pipes, tubes, &c.], are positioned by concrete blocks b engaging the inner surface of the mould or the outer surface of the core, or both. The surface of the finished article is, after withdrawal of the core, smoothed by a roller G, Fig. 3, held against the members S by springs 38 and, if desired, driven from a roller 3.
Patent GB-373154-A (GB)
Title: Improvements in and relating to wireless transmitting and receiving circuits
Filed: 1931-02-16
Abstract: 373,154. Condensers. MACKENZIE, W. B., RAWLINSON, W. F., and YEO, R. A., H.M. Signal School, Royal Naval Barracks, Portsmouth. Feb. 16, 1931, No. 4926. [Class 38 (ii).] A differential variable condenser comprises a moving vane or vanes C and two sets of fixed vanes A1, B1, the spindle D of the moving vanes passing through one set A1 of fixed vanes, the moving vanes being shielded from stray capacities and from the other set B1 of fixed vanes by tube- or sleeve-like projections E1 on the outermost of the fixed vanes through which the spindle passes, to reduce the minimum capacity between the moving and one set of fixed vanes.
Patent GB-229707-A (GB)
Title: Improvements relating to dress stands
IPC: A41H5/02
Filed: 1925-02-23
Abstract: 229,707. Black, R. M. Feb. 22, 1924, [Convention date]. Lay - figure and like stands. - In a dressmakers' l a y - figure of the type described in Specification 214,989 the inflatable rubber - container 10 is provided with a number of open ended rubber tubes 12 extending transversely from back to front, a cord 18 being passed through a group of tubes 12 to adjust the shape of the container. Each tube may be provided with a separate cord, the ends of which are secured to stops of wood &c., or with light rods adjustable in length.
Patent GB-373252-A (GB)
Title: Improvements in or relating to electric radiators
IPC: F24H3/00
Filed: 1931-02-17
Abstract: 373,252. Electric radiators. BENHAM & SONS, Ltd. and ALLENSBY, C. R., 66, Wigmore Street, London. Feb. 17, 1931, No. 5051. [Class 39 (iii).] One or more resistance wires or strips 4 are threaded through the tubes of a plurality of juxtaposed air - filled sections 11 of the type used in hot water radiators, each section comprising two tubes interconnected at the top and bottom. Two or more such radiators may be arranged in parallel. The wire, Fig. 3, is threaded through beads 8 and preferably covered with an asbestos or mica sheath 9. A tell-tale lamp and a thermostat may be provided. The top plugs and one of the bottom plugs of the structure may be removed, the openings being fitted with gauze screens. According to the Provisional Specification a single section is provided with a resistance wire passing down one tube and up the other, the ends of the wire terminating in a suitable plug. A number of such sections may be connected together by sleeve terminals or plug-and-socket connections.
Patent GB-186558-A (GB)
Title: Improvements in regenerative air or gas preheaters
IPC: F23L15/02
Filed: 1922-02-21
Abstract: 186,558. Aktiebolaget Ljungstr÷ms Angturbin. Oct. 11, 1921, [Convention date]. Regenerators.-In an air or gas heating-apparatus of the kind comprising a rotary disc or body provided with channels which communicate alternately with air or gas heating-flues and waste-gas flues, the rotary disc or body 1 is enclosed within a casing 2 provided at the top with a fan chamber 3 through which air or gas and flue gases are drawn by fans 4, 5 mounted on a shaft 6 supported in bearings 7, 8. Each fan is surrounded by a removable ring 9, 10 which may be adjusted to suit the position of the fan. The disc 1 is mounted on a vertical shaft 11 supported in adjustable bearings and is enclosed between walls which divide the casing into two passages of equal or unequal size or within a pipe 15 as shown. The disc is driven by a friction roller 18 mounted on a shaft 19 pivoted at 20 and driven through belt and friction or other gearing. The shaft 19 is driven from the fan shaft 6 and the speeds of the fans and disc bear a definite relation. The blades of the fans may be adjusted. Specifications 162,250 and 185,383 are referred to.
Patent GB-405120-A (GB)
Title: Improvements in or relating to the provision of articles with surface finishes
IPC: B29C37/00
Filed: 1933-02-20
Abstract: Articles are given a smooth matt finish by treating the surface with flocculent precipitates obtained in known manner from aqueous dispersions of rubber and the like such as for example concentrates obtained according to Specifications 219,635 and 290,313, [both in Class 70, Indiarubber &c.], and then contacting the still wet surface with a powder such as starch powder, or material such as finely divided cotton or wool and then drying the treated surface.  The finish so produced is particularly applicable to rubber proofed fabrics, giving a surface free from drag and not liable to "spotting."  The flocculent precipitates may be applied by brushing, spreading or spraying, and may before being applied be conditioned by the addition of wetting agents such as castor oil soap and alcohol to facilitate the initial wetting of the surface to be coated. Specifications 350,450 and 387,671 also are referred to.
Patent GB-308252-A (GB)
Title: Improvements in worm gearing
IPC: F16H55/22
Filed: 1929-02-15
Abstract: 308,252. Soc. Anon. des Anciens Etablissements Panhard et Levassor. March 20, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts] Toothrd wheels. - In helical gearing connecting parallel shafts, " the thickness of the teeth is determined by the normal modulus, and the height by a smaller modulus." Thus if Fig. 2 is a section of a normal tooth, a tooth section according to the invention is as shown in Fig. 3, that is, shorter.
Patent GB-249490-A (GB)
Title: An improved method of winding or reeling artificial silk threads
IPC: B65H51/16
Filed: 1926-02-23
Abstract: 249,490. Schulz, W. March 17, 1925, [Convention date]. Winding-machines; thread guides. - In winding artificial silk with the aid of a jet of liquid, preferably precipitating liquid, which carries the material with it, the material and the freely flowing liquid c are conveyed by a tube b as near as possible to the bobbin a so that the liquid is deflected slightly in a direction reverse from that of the rotation of the bobbin and the filament contacts with the bobbin at a point e. whereby the regularity of the winding is not affected by the jet. The arrangement may be used in stretch spinning. Either the bobbin or the tube may be reciprocated to lay the filament. Specifications 16588/03 and 19276/08, [Class 2, Acids and salts .Organic &c], are referred to.
Patent GB-717178-A (GB)
Title: Improvements in spreader stokers
Inventor: URQUHART WILLIAM MACD
IPC: F23K3/16
Filed: 1952-02-27
Abstract: 717,178. Feeding fuel to furnaces. BABCOCK & WILCOX, Ltd. Feb. 27, 1953 [Feb. 27. 1952], No. 5197/52. Class 51 (1) A furnace is provided with a spreader stoker which projects fuel towards the back of the furnace chamber, a grate which moves from front to rear and means which deliver to the grate forwardly of the rear wall of the furnace chamber particles that fall adjacent the said rear wall. As. shown in Fig. 3 a shield 47 extends downwardly in front of the rear arch and below the shield is an air pipe 54 provided with an inwardly-extending ledge 55. Air from the pipe is blown over the ledge through apertures in the pipe so that particles falling over the shield are blown forwardly into the furnace chamber. Specification 717,176 is referred to.
Patent GB-109979-A (GB)
Title: Automatically Controlled Electric Water and other Heaters.
Inventor: FORBES CHARLES STEWART
IPC: H01H37/36
Filed: 1916-10-10
Abstract: 109,979. Forbes, Sir C. S. Oct. 10, 1916. Thermostats. - The expansion of a capsule acting through a spring arm releases a switeh arm from a frictional detaining device. As shown in Fig. 1, a spring d pressing upon the capsule a is connected to a pivoted switch arm c with a metal contact f held between a pair of spring contacts h. In the modification shown in Fig. 4, the spring c' serves also as the switch arm and is held by a spring catch g<1>; a press-button i serves for resetting. The device is applicable for automatically controlling electric heaters, especially for kettles &c.
Patent GB-412690-A (GB)
Title: Improvements in or relating to wireless receiving systems
IPC: H03B5/10
Filed: 1933-02-21
Abstract: 412,690. Valve circuits for wireless reception. COSSOR, Ltd., A. C., and MARSHALL, D. F. S., Highbury Grove, London. Feb. 21, 1933, No. 5334. [Class 40 (v).] Local oscillations are supplied over a conductive connection from an electrode, e.g. the anode, of an oscillator V2 to an electrode, e.g. the anode, of a first detector V1 1 of a superheterodyne, and the current through the valve V2 is limited by a resistance R so positioned, e.g. in the cathode return lead, that the potential of the electrode of the valve V1 to which the local oscillations are fed, is not affected by the voltage drop across the resistance R.
Patent GB-1382831-A (GB)
Title: Faucet selector
IPC: F16K11/00
Filed: 1971-02-24
Abstract: 1382831 Valves P & R ELECTRICAL (LONDON) Ltd 28 Jan 1972 [24 Feb 1971] 5353/71 Heading F2V [Also in Division F4]  A domestic hot water system in which two appliances are adapted to be supplied with hot water from a single, continuous-flow heater, comprises: two mixing valves 24, 26, Fig. 4, each connected to one of the appliances and to the mains; and a selector valve 23 connected to the heater 31. Each mixing valve has hot and cold knobs 59, 60. To use an appliance 35, selector valve 23 is adjusted to bring ducts 3, 17 into communication with ducts 11, 9 respectively. The hot handle 60 of mixing valve 24 is then turned and cold water passes from the mains through ducts 9, 17 and into the heater 31. The resulting hot water flows through ducts 3, 11 and mixing valve 24 to appliance 35. By turning the cold knob 59 the hot water is diluted with cold water. If cold water alone is required at the appliance, only knob 59 is rotated. To use an appliance connected to a pipe 47, selector valve 23 is first adjusted to bring ports 3, 17 into communication with ports 34, 4 respectively. Then, on turning the hot knob of mixing valve 26, cold water flows from the mains through ducts 4, 17 and into the heater. The resulting hot water flows back to mixing valve 26 and thence to the appliance via ducts 3, 34. The hot water can be diluted &c. with cold water as before. The flow through the six ducts in selector valve 23 is controlled by a shaft 12, Fig. 3, formed with bores 21, 22, 19, 20. The flow through the mixing valves 24, 26 is controlled by valve elements 57, 58, Fig. 5. Lifting element 58 from its seat permits water from the mains to flow through inlet 50 and port 74 to the heater. The returning hot water re-enters through port 63 and passes along duct 65 to the appliance. Lifting element 57 dilutes the hot water with cold water or replaces it entirely if element 58 is seated. Depending upon the position of selector valve 23, one or other of the ducts 65 in the mixing valves 24, 26 permanently vent the heater to atmosphere. Selector valve 23 and mixing valve 26 may be separate or formed as a single unit.
Patent GB-778787-A (GB)
Title: An anaesthetic device with two containers containing two different anaesthetic agents
Inventor: DEMANT LADISLAV
IPC: A61M16/18
Filed: 1955-02-23
Abstract: 778,787. Respiratory appliances. CHIRANA, NARODNI PODNIK. Feb. 23, 1955, No. 5419/55. Class 81(2) Anaesthetic apparatus for the supply of two different anaesthetic agents has control members so interconnected that as the' proportion of one anaesthetic is increased the proportion of the' other is decreased. Anaesthetic liquids are contained in receivers 8, 9 and vapour passes up through ports 14, 14<SP>1</SP> in the main body 1 and thence to the outlet, at the left, to the patient. The .body 1 encloses two tubular control members 2, 2<SP>1</SP> each having a port 10, 10<SP>1</SP> to co-operate with the ports 14, 14<SP>1</SP> respectively and the tubular members have interacting stepped portions 12, 12<SP>1</SP>, engaging with a predetermined lost motion, so that as one port 14, 14<SP>1</SP> is opened the: other is closed. A further aperture 13, in the body, co-operates with the space between the stepped portions 12, 12<SP>1</SP> and admits air to the body from atmosphere. It is so placed that when both anaesthetic ports 14, 14<SP>1</SP> are closed the air admitted is a maximum. -Further features of the apparatus comprise a non-return valve 15, a rebreathing bellows 5, an excess pressure: relief valve 7 and a connection 6 for an additional gas supply.