baber/WOPTO huggingface dataset:
Patent GB-809316-A (GB)
Title: Chloroprene polymers containing tri-substituted thiourea accelerators
IPC: C08K5/36
Filed: 1957-06-14
Abstract: A vulcanizable composition comprises an unvulcanized chloroprene polymer and from 0.05 to 5.0 per cent by weight of the polymer of a thiourea accelerator having the general formula <FORM:0809316/IV (a)/1> where each of the radicals R1, R2 and R3 represents an alkyl radical having from 1 to 6 C atoms, an alicyclic radical having from 3 to 6 C atoms, an aryl radical having from 6 to 10 C atoms or an aralkyl radical having from 7 to 10 C atoms.  Antioxidants, fillers, colours, metal oxides and softeners may also be added.  In examples, Neoprene type W was milled with stearic acid, zinc oxide, magnesia, an antioxidant (octylated diphenylamines), carbon black and, as accelerator, (1) N-phenyl-N1-methyl - N1 - cyclohexyl -, (2) N - phenyl - N1-butyl - N1 - alpha - methylbenzyl -, (3) N - phenyl - N1 - butyl - N1 - benzyl -, (4) N,N1 - diphenyl - N1 - benzyl -, (5) N - phenyl - N,N1-diethyl -, (6) N,N1 - diethyl - N1 - phenyl -, (7) N - ethyl - N1,N1 - dimethyl -, (8) N - isopropyl-N1,N1\h - dimethyl -, (9) N - tertiary - butyl - N1,N1 - dimethyl -, (10) N - butyl - N1,N1 - di-methyl -, (11) N,N1,N1 - tributyl -, (12) N - phenyl - N1,N1 - dimethyl -, (13) N - butyl - N1,N1 - diethyl - or (14) N,N1,N1 - triethyl - thiourea.  The chloroprene stocks were then vulcanized by air curing at 307 DEG  F. for varying lengths of time.
Patent GB-314082-A (GB)
Title: Improvements in or relating to regulating transformers working in parallel
IPC: H01H9/00
Filed: 1929-06-19
Abstract: 314,082. Siemens - Schuckertwerke Akt.-Ges. June 22, 1928, [Convention date]. Systems depending on static transformers.-To prevent regulating transformers operating in parallel from getting out of step contact devices are associated with the regulating mechanism of each and connected in a circuit controlling a signal, safety or locking device. As shown in Fig. 2, the safety circuit comprises two parallel branches a, b between points 4, 5, both of which are interrupted when drums 1, 2, operated respectively in step with two transformer regulators, fall out of step. The brushes or the contact drums may be coupled to the .regulating gear. Fig. 3 shows a development of the contact mechanism for two transformers each of which includes a sector switch member 101 co-operating with fixed contacts 102 - - 105 and switch members 110, 120 controlling the tap connections to secondary windings 100, 200. The apparatus is operated by spindles 6 geared to maltese cross gear 108 driving the tap switches. The tolerance allowed by the safety contact arrangement 31, 33 depends on the width of the contact brushes and the contact 33 and this may be reduced by introducing contacts intermediate with the contacts 31, 33 and connected by further brushes in a third parallel circuit between the points 4, 5. Fig. 6 shows a system in which two transformers are regulated by reversible motors each controlled by a pair of electromagnetic switches 152, 153 included in the safety circuit. Both the switches for one direction are controlled by a switch 154 or 157 which may be energized by a push button 158 or 159, the push button contacts being interlocked by cross connections to prevent simultaneous energization of switches 154, 157, and each electromagnetic switch making a maintaining circuit controlled by the safety contacts between the points 4, 5. The push button circuit includes contacts 165, 166 on each regulator such that the control circuit cannot be closed unless all are correctly positioned. Any transformer can be cut out, by switches 168 arranged to shortcircuit the contacts 165, 166 and the safety contact devices (not shown) associated with that transformer being operated by the main transformer switch.
Patent GB-850186-A (GB)
Title: Turbine casings
Inventor: BLYTH JACK VALLIS
IPC: F01D25/24
Filed: 1957-06-14
Abstract: 850,186. Turbine casings. NAPIER & SON Ltd., D. Aug. 28, 1958 [Jan. 14, 1957], No. 18902/57. Class 110 (3). In a casing 16 for a multi-stage turbine comprising a metal body of circular cross-section extending with longitudinal continuity of metal over the part surrounding at least two rows of stator blades 12 interposed between rows of rotor blades 11, the stator blades are rigidly secured to stator blade-rings 13, secured against circumferential movement by dogs provided on the inner edges of radially inwardly facing flanges 19, 20 in the casing, these dogs engaging corresponding radially outwardly facing dogs around the peripheries of the stator blade rings. The blade rings 13 have flanges 24 engaging circumferential seatings to provide positive axial location at the upstream ends of the rings. The casing 16 is divided longitudinally into two or more segments of arcuate cross-section which are bolted together through longitudinal flanges. Stationary arcuate shroud-plates 30 are provided close to the tips of the rotor blades 11 which plates act to locate the downstream ends of each of the stator rings 13 and these are secured in the casing by means of bolts 31. Slight clearances 32 are provided between the shroud-plates 30 and the downstream ends of the stator blade rings when cold, to allow for longitudinal thermal expansion. The casing 16 and the rotor and stator blades progressively increase in diameter towards the downstream end so that the turbine blade rings can be assembled successively from the larger diameter end.
Patent GB-1084965-A (GB)
Title: Method and apparatus for storing fluids under water
Inventor: KOHRING WALTER
IPC: B65D88/78
Filed: 1965-05-05
Abstract: 1,084,965. Liquid cargoes transferring. MOTHERWELL BRIDGE & ENGINEERING CO. Ltd. Dec. 15, 1965 [May 5, 1965; Sept. 11, 1965; Oct. 18, 1965], Nos. 19008/65, 38879/65 and 44075/65. Heading B8E. [Also in Division E1] A plurality of submersible storage units 22 for oil or gas are moored adjacent to a so-called " production tower " 36 and are connected thereto by piping, the said tower being connected by further piping to a mooring tower 37 for a tanker vessel 38, a surplus-gas-burning tower 39 being situated near to the tower 36.
Patent GB-361935-A (GB)
Title: Improvements in or relating to the preparation of ammonium sulphate crystals and apparatus therefor
IPC: C01C1/242
Filed: 1930-06-21
Abstract: In the manufacture of ammonium sulphate by passing an ammoniacal gas below the surface of a pool of sulphuric acid or sulphuric acid--containing ammonium sulphate solution, the absorption liquor is subjected to mechanical stirring in addition to the agitation imparted by the entrance of the ammoniacal gas whereby crystallized particles of less than the desired size are maintained in suspension while the larger crystals settle.  The process may be carried out in a conical-bottomed saturator as shown in Fig. 1.  The gas is passed into an annular conduit 13 around the periphery of the saturator from whence it passes via longitudinally inclined turbine-wise nozzles 15 into the saturator below the level of the liquid, thus imparting a rotary movement to the latter.  A stirrer 21 attached to a perpendicular hollow shaft 24 passes through a tube 20 and is preferably rotated in such a direction as to assist the rotary motion imparted by the gases.  A suction lift 19 for the removal of crystals is also introduced through the tube 20.  According to a modification (Fig. 3) the outer ring of nozzles 15 is supplemented by an inner ring of nozzles 33, which are so inclined as to give the <PICT:0361935/III/1> <PICT:0361935/III/2> <PICT:0361935/III/3> <PICT:0361935/III/4> same direction of movement to the liquor as the outer ring 15.  A paddle stirrer 21 is also provided to assist the rotary motion imparted by the gases.  According to a further modification (Fig. 4), a saturator having two conical bottoms 12, 12 is employed, the tube 20 and suction lift 19 also being duplicated. The gas is introduced through a ring of inclined nozzles 15 of elliptical configuration.  Each tube 20 has attached at its lower end a perpendicularly-adjustable funnel-like baffle 45.  A conduit 50 has two branches 49 which communicate with the baffles 45 through openings 40.  A paddle stirrer 51 (Fig. 5) is mounted within the conduit 50 and draws liquor through the conduit into the baffles. Such baffles can also be supplied in the modifications shown in Figs. 1 and 3.  Specifications 152,766 and 315,700, [both in Class 1 (ii), Inorganic compounds, other than &c.], are referred to.
Patent GB-347058-A (GB)
Title: Improvements in stop valves
IPC: F16K1/24
Filed: 1930-06-23
Abstract: 347,058. Stop valves. KARNATH, K., 6, Bismarckstrasse, Zweibrucken, Bavaria, Germany. June 23, 1930, No. 19105. Convention date, June 24, 1929. [Class 135.] Closure members, dual ; actuating-mechanism.-A parallel disc stop valve is provided with controlling mechanism having separate parts (cams) whereby the valve discs are actuated individually but simultaneously for retraction from their seats, the discs being slidingly coupled with each other for swinging into positions parallel with the direction of flow so that by swinging one disc the other is also swung. The discs 3, 3a, Fig. 1, are forced on their seatings in the closed position by cams 6, 6a, and withdrawn individually by double cams 8, 8a, being afterwards swung round by a cam 13 and a pivoted goose-neck arm 10 engaging an upstanding projection 11. In order to provide for slow opening and rapid closing movements the spindle is formed in two parts 2, 22 which are connected by a planetary reducing-gear, this gear being operative only for opening. In this case the hand-wheel 29 screws up to the top of the outer spindle 22 and a catch lever 33 engages the pinion housing 19 with the valve casing 21. The rotation of the wheel 29 thereupon operates through the gear train 23 .. 26, the latter engaging the toothed crown 27 and rotating the casing 18 and lower spindle 2 slowly. For closing the valve the wheel 29 first runs down the outer spindle 22 and releases the catch lever 33, thereby freeing the pinion housing 19 so as to rotate with the wheel 29; the casing 18 and lower spindle 2 then rotate with the same speed as the hand-wheel to the closed position.
Patent GB-518817-A (GB)
Title: Improvements in course deviation indicating devices
IPC: G01C19/34
Filed: 1938-06-29
Abstract: 518,817. Course deviation indicating devices. SPERRY GYROSCOPE CO., Inc. June 29, 1938, No. 19311. Convention date, July 31, 1937. Addition to 475,097. [Classes 69 (ii) and .135] A course deviation indicating device for aircraft, comprises a rate of turn responsive gyroscope 5 which is adapted to control a supply of pressure fluid from a pump 7 to a multicylindered engine 6 the cylinder block of which is adapted to revolve at a rate proportional to the rate of turn of the craft and in a direction corresponding to the direction of turn, the outer surface 52 of the said block being suitably marked and visible through a window 2. A valve sector 26, Fig. 2, is attached to the casing 61 of the gyroscope and controls the supply of pressure fluid from a central port 21, Fig. 4, to either of outer ports 28, 29 which lead to the. two ends 31, 45 of a hollow shaft 32 of the engine 6 which consists of a cylindrical block 35 rotatably mounted on the shaft 32 and having a number of cylinders parallel to the shaft 32 with pistons 36 acting on a stationary cam surface 51. The direction of rotation of the engine block 35 depends upon the direction of supply of the pressure fluid as determined by the valve sector 26 and the rate of rotation on the rate of flow of the pressure fluid. The valve sector 26 is provided with a controlling recess 27 which is shaped so that the flow of pressure fluid is proportional to the rate of turn compensated for the normal angle of bank at that rate of turn. The rotation of the engine block may be integrated by suitable gearing to drive a pointer moving over a compass card and so indicate the course. The gyroscope 5 is of the electrically spun type and is normally centralised with the rotor axis horizontal by means of a leaf spring 67. The central position may be adjusted initially by screws 72, and during operation by varying the field strengths of magnets 70, by resistances. This arrangement also allows of adjusting the gyroscope so that the valve sector 27 will occupy its central position during straight flight and the indicator is kept at a standstill and further of resetting the compass card indicator 59 to synchronise it with the magnetic compass.
Patent GB-996692-A (GB)
Title: Process for recovering acrylamide
IPC: C07C67/00
Filed: 1964-05-08
Abstract: Acrylamide is recovered from a mixture of a sulphate and acrylamide by passing an inert gas having a temperature of at least 20 DEG  C. into contact with the mixture to vaporize the acrylamide and subsequently recovering the acrylamide from the gas.  The mixture is obtained by neutralizing acrylamide sulphate with a base and the mixture obtained is either treated directly or the sulphate is separated and treated to remove residual acrylamide.  The treatment may be carried out in an aqueous or organic solvent, at 120 DEG  to 290 DEG  C. The acrylamide is recovered from the gas by cooling to condense it or by washing with water or an organic solvent.
Patent GB-685838-A (GB)
Title: Production of paste-forming polyvinyl chloride
IPC: C08F14/06
Filed: 1949-07-22
Abstract: Vinyl chloride is polymerized in aqueous emulsion in the presence of an emulsifier and a water soluble polymerization catalyst, such as potassium persulphate, with vigorous agitation, the degree of agitation, the concentration of emulsifier, and the phase ratio of monomer to aqueous phase being so adjusted that the emulsion is maintained, at least towards the end of the reaction, at the point of incipient coagulation.  Emulsifiers specified are the sodium salt of highly sulphated methyl oleate, and the alkali metal and ammonium salts of monoesters of phthalic acid or lower alkyl nuclear substituted phthalic acids with C4-C18 alkanols, such as the sodium salts of n-butyl, cetyl, and stearyl hydrogen phthalates, the emulsifier concentration preferably being less than 0.5 per cent based on monomer weight.  Agitation of a violent and turbulent type, and the use of a relatively high proportion of monomer to aqueous phase favour the production of polymers of the kind desired.  The use of carbon tetrachloride in the reaction mixture, and the use of an aqueous medium of pH 9.5 are also specified.  The polyvinyl chloride products may have particle sizes of from 0.0005 to 0.005 mm., and form pastes with plasticizers which are smooth and spreadable. Specification 589,715 is referred to.
Patent GB-409165-A (GB)
Title: Improvements relating to the manufacture of hollow objects from fused refractory materials
IPC: B28B1/54
Filed: 1933-07-10
Abstract: 409,165. Casting refractory articles. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY, ET CIREY, 1<bis>, Place des Saussaies, Paris. July 10, 1933, No. 19506. Convention date, July 13, 1932. [Class 87 (ii).] Relates to moulding hollow objects from material fusible at high temperature by pouring the fused material into a mould and then emptying the mould in order to retain only that part of the material adhering to the mould walls, or by immersing a core in the fused material and then withdrawing it therefrom ; and consists in raising the temperature of the extremities of the mould or core to the temperature of the fused material and maintaining the temperature thereat during contact of the mould &c. with the material, while the temperature of the other parts of the mould &c. is separately regulated before, during and after contact of the mould with the material. The mould may consist of a tube 1 with reduced ends 2, 3 which project beyond the bases of shallow cups 4, 5 in which the mould seats. The body of the mould is surrounded with one or more layers of heat insulating material 12, 13 and the cups are surrounded by heat insulating material 10, 11, the whole being enclosed in a two part casing 14 provided with handles 15. The lower cup is fitted with a graphite tube 8 which is inserted into the fused material in the bath 9 and air is then withdrawn from the interior of the mould by way of a tube 7 in a cover 6 fitted on the upper cup, thus causing the mould and cups to be filled with fused material. On re-introduction of air after a given time interval, the moulded article 16 will be separate from the solid material 17, 18 in the cups, owing to the projections 2, 3 having been surrounded by and thus acquiring the temperature of the fused material. Electric heating coils may be provided around the mould. A dipping core for producing a crucible comprises a hollow member 32, Fig. 4, cover 30 and an annular projection 31, provision being made at 33 and 34 for the circulation of fluid at the desired temperature. The core is immersed in the fused material and on withdrawal, the moulded article 35 is separate from the part 31 on the cover, owing to the projection 31.
Patent GB-1163683-A (GB)
Title: Improvements in or relating to Devices for Engaging and Lifting Annular Objects.
IPC: B66C1/24
Filed: 1968-04-25
Abstract: 1,163,683. Cradles for lifting annular objects. NEDERLANDSCHE KABELFABRIEKEN, N.V. 25 April, 1968 [2 May, 1967], No. 19542/68. Heading B8H. A device for lifting annular objects, e.g. stacks of strip steel coils, comprises a leg 1, which is inserted into the coils, and pivoted members 12, 13 which are swung outwards under the bottom of the load object by an electric motor 7 and a lead screw 9. The members 12, 13 may be moved by an hydraulic or pneumatic ram. The device may be rotated about a pivot 6 by a chain pivoted at 5 to a leg 2 and attached to a separate hoisting device.
Patent GB-1457016-A (GB)
Title: Disc type brake
IPC: F16D55/00
Filed: 1974-05-03
Abstract: 1457016 Hydraulically- and mechanicallyactuated disc brakes; slack adjusting DAYTON-WALTHER CORP 3 May 1974 [7 May 1973] 19625/74 Heading F2E A shaft 30 freely rotatable by a lever 36 in a boss 44 of a caliper housing and in a member 28 press-fitted in a piston 21 has a thread 46 cooperating with a thread 54 on the inside of a pressure member in the form of a nut 52. The pressure member 52 has an annular toothed surface 53 on its underside, which is forced into contact with a similar surface 29 on the top of member 28 by a finger spring 64 surrounding the shaft and separated from pressure member 52 by a needle thrust bearing 60 between washers 58. When piston 21 is forced downwards by hydraulic fluid introduced at 18, Fig. 2, to apply brake pad 25 to disc 26, the separation 70, Fig. 5, produced between a respective tooth and a space is normally less than the depth of a tooth, but after a certain degree of pad wear, the separation exceeds distance 72, and spring 64 forces pressure member 52 to rotate until the next tooth engages, member 52 advancing downwards along shaft 30 as it does so to a new rest position. For parking, with the brake not hydraulically applied, lever 36 is rotated e.g. by cable and hand lever or pedal, whereupon pressure member 52 is moved downwards by the thread engagement, pushing the piston 21 before it. If the brake has already been applied hydraulically, rotation of shaft 30 by lever 36 causes pressure member 52 to move downwards by thread engagement into full contact with the piston. In the modification of Fig. 6 (not shown) the shaft 30 is internally threaded and pressure member 52 externally threaded.
Patent GB-739716-A (GB)
Title: Improvements in or relating to ultra high frequency devices
Inventor: CHADBURN CYRIL GEORGE
IPC: H01J25/24
Filed: 1952-08-05
Abstract: 739,716. Holders for thermionic valves. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 2, 1953 [Aug. 5, 1952], No. 19728/52. Class 38 (1). [Also in Group XL (b)] A klystron (not shown) is held in a base 12 by means of split rings 24 (one only shown) which engage contact rings on the klystron. When in an unstressed state the rings are of greater diameter than the operture in the base 12. The contact rings of the klystron tend to flatten the rings 24 which consequently exert a tight grip on the klystron.
Patent GB-746855-A (GB)
Title: An assembly of a weld nut and a sheet metal panel
IPC: F16B37/06
Filed: 1953-07-16
Abstract: 746,855. Anchor-nuts. PLUMMER, A. Jan. 13, 1954 [July 16, 1953], No. 19729/53. Class 89 (1). [Also in Group XXII] The bottom face of a weld nut 12, Fig. 1, has weld projections 18 and a locating ring 13 to enter an aperture 14, Fig. 3, in a sheet metal panel 15; ribs or fillets 16 radiating from the ring 13 enter radial openings 17 extending from the aperture 14 in the panel. In a modification, Fig. 4, the ribs 21 are circumferential ; a locating ring may be provided. In a further modification, Fig. 6, the nut has pins 51.
Patent GB-730523-A (GB)
Title: Improvements in injectors for insecticides and the like
IPC: A01G29/00
Filed: 1953-07-16
Abstract: 730,523. Drop &c. delivery closures. RENTOKIL, Ltd., EADES, E., and HICKIN, N. E. Oct. 23, 1953 [July 16, 1953], No. 19782/53. Class 125 (3). A closure device for an injector for treating wood &c. with insecticide comprises a screw cap 3 with a spout 5 and nozzle 6 and a tube 10 which is detachably engaged with the bore 11 of the spout 5. When the container 1, of polythene and compressible, is used in an inverted position the tube 10 is removed and the liquid contents can then discharge directly through the nozzle when pressure is applied to the container.
Patent GB-804907-A (GB)
Title: Improvements relating to apparatus for evaluating the rate of change of a variable
Inventor: UDALL ANTHONY JOHN SHAWCROSS
IPC: G06G7/182
Filed: 1953-07-17
Abstract: 804,907. Electric analogue calculating systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 9, 1954 [July 17, 1953], No. 19831/53. Class 37. The smoothed rate of change of a dependent variable, e.g. target displacement, with respect to an independent variable, e.g. time, is evaluated from a set of observations of the dependent variable made at equally spaced values of the independent variable. The dependent variable is represented by a set of stores alternating voltages each applied to a tapping of a transformer network the output voltage of which represents the required rate of change. As shown, Fig. 1, the stores Mo ... Mn store alternating voltages, of the same frequency and phase, the amplitudes of which represent the values of the dependent variable at instants represented by the positions of the fixed taps on the primary winding Tp of transformer T. In the lead connecting a store to the associated tapping on Tp, a further transformer To,1 ... Tn-1,n, is inserted and the secondary windings of these transformers are coupled together in series. The amplitude of the alternating voltage at seconday winding Ts is proportional to the smoothed rate of change. In Fig. 2 (not shown) the transformer Tp is not used, the primary windings of transformers To, ... Tn-l,n are connected to a common point and the required smoothed rate of change is obtained from the series-connected secondary windings. In Fig. 3 (not shown), the transformer T has a ring-type primary winding and the transformers To, ... Tn-1 are connected to it by relays which are operated cyclically to facilitate the clearance of stores and the injection of new observations to produce a continuous smoothed rate. Specifications 802,799, [Group XXXVIII], 804,905 and 804,906 are referred to.