baber/WOPTO huggingface dataset:
Patent GB-634653-A (GB)
Title: Rectifier with voltage regulating transductor
IPC: G05F1/32
Filed: 1946-11-15
Abstract: 634,653. Automatic voltage and current control systems ; rectifiers ; charging batteries. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Nov. 15, 1946, No. 33906. Convention date, Nov. 16, 1945. [Classes 38 (ii) and 38 (iv)] In a voltage regulated A.C./D.C. converter system comprising a rectifier and a voltage regulator circuit employing a transductor, a transition to current limitation above a permissible value of the current is effected by means responsive to a time integral of a function of the current, varying with the temperature of a circuit member traversed by a current proportional to the rectifier current. In Fig. 1 the rectified input to batteries 4 to be charged is voltage regulated by a transductor 3 with control winding 6 and series resistance 8 shunted across the load opposing a constant magnetizing winding 5. A bridge of resistances 9 of high negative temperature coefficient, preferably most marked from a certain temperature shunts the resistance 8 and is fed by an input current transformer 10 so that when the current input exceeds a permissible maximum for a time the current to the winding 6 increases and a lowered voltage input to the rectifier 1 and load 4 is produced. A positive temperature coefficient resistance 11 across the transformer 10 and negative coefficient resistance 12 in its output makes the control transition more pronounced. The resistance 8 may form one half of the bridge or, Fig. 3 (not shown), may be shunted by a single negative coefficient resistor and the latter energized and controlled from the transformer 10 by a heater adjacent to it. In a modification the transformer feeds through a rectifier a bridge of positive and negative coefficient resistances, the output of which shunts the transductor control winding 6 or a further control winding through a bias rectifier so that the transformer feed is operative only above a certain current to limit the A.C. input. The bridge of positive and negative coefficient resistances and bias rectifier may be included in the D.C. output circuit of the main rectifier and opposed voltage control windings of the transductor are fed from the load input voltage through positive and negative voltage dependent resistances respectively.
Patent GB-1131799-A (GB)
Title: Substituted thiazolidines
IPC: C07D203/10
Filed: 1966-07-04
Abstract: 1,131,799. Substituted thiazolidines and intermediates. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA & NEW ZEALAND Ltd. 4 July, 1966 [19 July, 1965; 26 July, 1965; 31 Aug., 1965; 8 Sept., 1965], No. 33971/67. Divided out of 1,131,798. Heading C2C. Compounds of the Formula III (wherein R is phenyl, halophenyl, nitrophenyl, trifluoromethylphenyl, alkylphenyl, naphthyl, hydroxymethyl, benzyl, phenoxymethyl, phenylthiomethyl or 5- or 6-membered heterocyclic containing one or two O, N or S hetero atoms, and R and R<SP>11</SP> are H or alkyl, but when R is heterocyclic and R<SP>1</SP> is H then R<SP>11</SP> is also H) which are novel when R<SP>1</SP> is alkyl, and acidaddition salts thereof, are prepared by reacting compounds of the Formula I with thiourea (or isothiourea) or thiocyanic acid, preferably in the presence of an acid. When thiourea and an acid are used and the reaction temperature is -10 to 50 C., intermediates of Formula IV, which together with the corresponding free bases are novel, can be isolated; on heating at 60 to 180 C. they are converted to compounds of Formula III, which may be isolated as their sparingly soluble thiocyanic acid salts.
Patent GB-341059-A (GB)
Abstract: 341,059. Electric signalling systems. HAMILTON, R. M., St. Andrew's Works, Slough. Sept. 6, 1929, No. 27198. [Class 40 (i).] In a system for maintaining two or more step-by-step switches in synchronism, the magnet circuits of the switches pass through contacts controlled by the other switch, or switches, so that a movement of one switch cannot be repeated until the other switch or switches have operated. A second switch can be arranged to move only when the primary switch completes a predetermined number of steps, e.g. at every tenth step. In the system described, which may be part of a totalizator scheme, two switches 201, 300 step in synchronism and switch 301 moves at every half revolution of switch 300. The switches are 25 point rotary type the terminals being wired as indicated, two banks of each of the switches being wired to form two intercalated sets of contacts. The wires 207 are normally connected to negative potential and are marked as required by disconnection, the switches 201, 300 moving until the disconnected terminal is reached. In the position shown magnet 302 energizes breaking its own circuit and stepping switch 300. In this position the circuit of 302 is broken but magnet 205 energizes over 315 to step 201. The circuit of 302 is thus recompleted and 300 makes a further step allowing 201 to move again. The sequence is continued until the disconnected wire 207 is reached. When a further marking is made the two switches step again and when terminal 327 is reached switch 300 completes a circuit over 337 for magnet 308 of switch 301. Switches 301 and 300 make two reciprocally controlled steps after which 300 completes the half revolution by self interruption. In this position a circuit is completed for magnet 205 to move switch 201 over the last five terminals of the bank and when the first terminals are reached switches 201 and 300 step as before described in search of the marked line. Further switches may be arranged to move at each half revolution of switch 301. A system for moving several switches in synchronism in which the magnet circuits pass through contacts of all the switches is also described. Specifications 333,258 and 334,270, [both in Class 106 (i), Calculating &c.], are referred to.
Patent GB-848986-A (GB)
Title: Regeneration of solvents used in the preparation of isocyanates
Filed: 1956-11-08
Abstract: Alkyl phthalates or other solvents which have been used in the production of isocyanates and whose boiling points are higher than those of the corresponding isocyanates are recovered and regenerated from the reaction mixture after the isocyanate has been distilled therefrom and after the used solvent has been drawn from the distilling apparatus, by subjecting the used solvent to a heat treatment at 150 DEG -200 DEG  C. to cause precipitation of impurities which are then separated by filtration or centrifuging. The impurities which are removed include residual isocyanate compounds.  The thermal purification treatment may be associated with a treatment with about 2% of a substance containing -OH or -NH groups capable of reacting with I the isocyanate compounds remaining in the used solvent and converting them into insoluble compounds. Substances which may be used for this purpose are water, acids, bases, alcohols, and amines.  Alcohols such as methanol and ethanol, amines such as methylamines and aniline, and ammonia, are preferred. After filtration or centrifuging, the regenerated solvent may be re-used in the isocyanate production and it may be recycled several times.  If desired, the solvent may be clarified by treating it with active carbon or activated earth. In an example, a cooled solution of tolylene diamine in butyl phthalate is added to a solution of phosgene and butyl phthalate; the mixture is heated and a further quantity of phosgene is added; nitrogen is bubbled through the mixture; the mixture is subjected to vacuum distillation and the used solvent is subsequently drawn off and filtered; the filtrate is heated for 90 minutes at 180 DEG -200 DEG  C. and the precipitate which forms is removed by filtration; the butyl phthalate filtrate contains only 0,2% of NCO groups.  Other examples describe the use of ethyl phthalate and its regeneration by addition of aniline followed by heating, by addition of ethanol and water followed by heating, and by addition of bleaching black and activated earth followed by the heat treatment, the liquid being then separated from the solids by filtration.  Octyl phthalate may be used as solvent instead of ethyl or butyl phthalate.
Patent GB-521755-A (GB)
Title: Improvements in and relating to milking plant, more particularly control valves usedtherein
IPC: A01J5/04
Filed: 1938-11-24
Abstract: 521,755. Cow-milkers. McBAIN, A. Nov. 24, 1938, No. 34171. [Class 84] [Also in Group XXIX] A valve for controlling the milk pipe line and the air pipe line of a milking plant is adapted to be removed from the pipe line system as a complete unit for sterilization &c., the valve structure also embodying, as an integral part thereof, a short length of pipe adapted to be incorporated in and form part of the milk line. The valve body is formed with an upstanding pin on which is mounted a rotary disc 15 provided wih an operating-handle 19. The valve body embodies at one side a short tangentiallyarranged tube 30, which is in communication with the appropriate valve passage and port and is formed with enlarged ends 31 to receive the ends of the milk pipe line up to the shoulders 33, inset rubber rings gripping the pipes -and forming a seal. On the opposite side of the valve body is a two-part clamp 34, 35 provided with wing-nuts 36 and a spigot 37, which enters a hole in the air line to give the suction connection.
Patent GB-1450850-A (GB)
Title: Printing inks for transfer printing
IPC: C09D11/02
Filed: 1974-08-02
Abstract: 1450850 Transfer printing ink BAYER AG 2 Aug 1974 [18 Oct 1973] 34174/74 Heading C3P [Also in Division D1] A transfer printing ink contains a waterinsoluble dyestuff which surblimes at a temperature from 120 to 280 C., a binder, a filler and a thickener, the weight ratio of binder to filler being from 1 : 2 to 1 : 8, and water. In the examples the inks comprise water, diacetone alcohol, natural Ca-Mg carbonate, sodium hexametaphosphate, naphthalenesulphonic acid/formaldehyde condensation product, swelling clay, polyacrylic acid binder. Disperse yellow, alkylphenol polyglycol ether, etherified locust bean gums, the ammonium salt of a copolymer of vinyl acetate and crotonic acid, Disperse Red, Na-Al silicate, a plant kernel flour ether, water-soluble shellac, Disperse Blue and Disperse Violet.
Patent GB-434794-A (GB)
Title: Improvements in or relating to caps for radiators
IPC: C07K1/02
Filed: 1933-12-05
Abstract: 434,794. Radiator caps. SOC. ANON. DES USINES CHAUSSON, 35, Rue Malakoff, AsniÞres, Seine, France. Dec. 5, 1933, No. 34198. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 6, 1934]. [Class 125 (iii)] A radiator cap on which the top is preferably stream-lined and which is operated in a manner used in the " picker-jar " type of closure, comprises a head 6 and an elastic annular member 3 which is compressed on operating the head 6 of a screwed stem 5 which is rigidly attached thereto. On compressing the member 3, it is expanded radially into engagement with the neck 1 of the radiator. A collar 4 is drawn towards or moved away from the head 6 when the head is rotated. A lug 9 on a collar 7 prevents relative rotation and a split-ring 11 prevents the loss of the members 4, 3 and 7 when the cap is manipulated.
Patent GB-605480-A (GB)
Title: Improvements in friction driven presses
IPC: B30B1/18
Filed: 1945-12-18
Abstract: 605,480. Mechanical presses. LAITER, R. Dec. 18, 1945, No. 34236. Convention date, Sept, 2, 1942. [Class 87(ii)] In a press comprising a conical flywheel i rotated alternatively in opposite directions for upward and downward displacement of the platen d by the alternate frictional engagement therewith of two oppositely inclined cones l on an axially displaceable shaft j, this mechanism is located within the press frame and below the platens. This displacement is effected by a fixed projection m<1> engaging a cam groove in one of the bushes m which is rotatable manually or mechanically. The flywheel shaft comprises a screw g which drives the platen d through a nut f and columns c.
Patent GB-606818-A (GB)
Title: Improvements in or relating to helicopters
IPC: B64C27/54
Filed: 1945-12-18
Abstract: 606,818. Helicopters. UNITED AIRCRAFT CORPORATION. Dec. 18, 1945, No 34261. Convention date, March 1. [Class 4] A control mechanism for a helicopter rotor comprises a governor driven in timed relation with the rotor, a pitchadjusting motor controlled by the governor and means movable in response to variation in rotor speed from a selected value for changing both the rotor blade pitch and the governor setting. In the form shown, the normal collective and cyclical pitch control levers 58, 96 are provided, but vertical movements of the aircraft are arranged to be controlled solely by the throttle control member174. The collective pitch control member includes a hydraulic link 62 whose length is varied to adjust the .position of the pitch-control rod 64, the link consisting of a piston and rod 100, 106, working in the cylinder 62, the position of the piston being adjusted by pressure fluid supplied through one of two conduits 136, 138 according to the setting of a valve 158, Fig. 13, controlled by a governor 98 driven from the rotor reduction gear 28. The governor setting is varied by adjustment of a control spring 150 by means of a pulley 152 and cable 182, Fig. 1, the latter being connected to a pulley 180 over which passes a cable 134. One end of the latter is attached to a member 170 operable by the pilot's governor control member 166 or throttle control 174, the other end of the cable being attached to a crank disc 122 on one side of the cylinder 62, the disc operating a crank arm 116 and connecting rod 112 on the other side of the cylinder, by means of which the effective length of the link 62 may be reduced. The throttle control member 174 is connected to the throttle lever 178 by a cable 172 and bellcrank 176, the latter being mounted on the collective pitch control lever 58. The pressure fluid for actuating the link 62 is supplied by a pump 155 in the governor casing which boosts the pressure of liquid in a pipe 136 connected to an accumulator 190. The fluid supply system may be rendered inoperative by a solenoid valve 140, the link 62 then remaining of fixed length, and the governor control being eliminated. Movements of the rotor blades about their drag pivots are damped by hydraulic shock absorbers 56, Fig. 3 (not shown), the fluid supply for which is maintained from a reservoir 68, Fig. 2 (not shown), at the top of the rotor.
Patent GB-477571-A (GB)
Title: Improved apparatus for treating one liquid with one or more other liquids
IPC: B01D11/04
Filed: 1936-12-14
Abstract: <PICT:0477571/III/1> In apparatus for continuous counter-current mixing and separation of liquids of different density, of the kind described in Specification 437,089, and consisting of treating units each consisting of a separating vessel, a pump with a pipe circulating system including a buffer pot and provided with a pressure-creating restriction, and a bleed line leading from the pump to the separating vessel having discharge lines for the heavy and light liquids, there is provided a proportionmeter pump adjusting the flow of treating liquid charged to the buffer pot in fixed relation to the flow of liquid to be treated to the unit, a level regulator in the buffer pot, and an overflow or weir in the discharge pipe from the lower part of the separating vessel whereby the level of the surface of liquid separation in the separator is controlled.  The apparatus may be applied to the purification of hydrocarbon oils. The liquid to be treated, e.g. kerosene, is fed to the buffer pot 2, through a pump 3, and the treating liquid of higher density through a proportionmeter pump 4.  The pump 1 continuously draws liquid from the bottom of the buffer pot and delivers a part into the bleed line 6 from which it enters the separating vessel 7, and returns the other part through a constriction 5 to the buffer pot.  A baffle 15 is provided.  The liquid level in the buffer pot is controlled by a level controller 8 which operates a valve 9 in the bleed line controlling the flow therethrough.  From the lower end of the separating vessel a discharge line 10 is led to an overflow or weir 11 the position of which may be varied to control the separation level in the separator.  Purified kerosene flows off through the line 13 from the separator, and the used treating liquid at line 12 from the overflow.  Lines 14 are either vented to the atmosphere or connected to a closed pipe system filled with an inert gas.  A series of such units may be used, in which kerosene and treating liquid are introduced respectively into the first and last buffer pots, or different treating liquids may be introduced at each buffer pot.  The system may be adapted to many variations by mounting the buffer pot, pumps, level regulator weir and constriction as a unit separate from the separating vessel, and this unit is connected to the relevant separator or any other in the series through detachable hose pipe connections.
Patent GB-173955-A (GB)
Title: Improvements in railway wagons
IPC: B61D7/16
Filed: 1920-12-04
Abstract: 173,955. McRea, C. J. H. Dec. 4, 1920. Doors, wagon.-In a railway wagon for carrying coal &c. of the kind in which hinged trap-doors are provided in the floor of the vehicle for discharging the contents, the provision in the trapdoor of one or more countersunk cups having a fixed cross-bar with which the point of a pick or other tool may be engaged for the purpose of raising the door from inside the vehicle. The cup B has a bar C and side plates or flanges D secured to or formed integrally with the sides of the cup B. The cup is inserted flush with the surface of the wooden door and is bolted to a strap F on the opposite side.
Patent GB-629941-A (GB)
Title: Improvements in speed regulating device for electric motors
IPC: H02P7/06
Filed: 1947-12-29
Abstract: 629,941. Non - metal resistances cooling resistances. AKTIEBOLAGET ELEKTROLUX. Dec. 29, 1947, No. 34378. Convention date, Sept. 12, 1944. [Class 37] [Also in Group XXXV] In a speed regulating device for an electric motor, having a centrifugal switch with a resistance connected across the switch terminals and which is rotated by the motor, the resistance has a surface in good heat contact with one or more plate elements which are rotated to induce an air flow for cooling purposes. Fig. 2 shows a centrifugal switch in which the contacts are connected by resistance 21. Two semi-circular plates 29 are placed above and below resistance 21 and are - cooled by the air flow through recesses 30 when the switch is rotated. The resistance and plates form a counterweight to the switch elements. The resistance may consist of a ceramic material' in which the current is proportional to the fourth power of the applied voltage. A thin lead plate may be inserted between the resistance and the plate elements.
Patent GB-507834-A (GB)
Title: Improvements in strippers for wire drawing blocks
IPC: B21C47/30
Filed: 1938-11-25
Abstract: 507,834. Reeling wire. RICHARDS, S. H., and LLOYD, H. J. S. H. Nov. 25, 1938, No. 34381. [Class 83 (iv)] A stripper for wire drawing blocks or drums comprises a wire gripping device adapted to grip when the stripping device is in its extended or operative position and automatically to release said wire when the stripper is collapsed into its inoperative position. Legs pivoted at 2 to a yoke 3 form the supports for the wire, and toggle arms I connected to a collar 8 pinned to the slidable post 5 maintain the legs in position. A jaw 1.4 pivoted to one of the legs and having a thrust screw 21 bearing against the adjacent toggle link 11 is pivoted to grip the end of the wire 17 with the legs in operative position. When the legs are collapsed by pushing down the post 5, the jaw 14 and the end of the wire are automatically released.
Patent GB-1057408-A (GB)
Title: Record film store
IPC: G11B15/61
Filed: 1965-08-12
Abstract: 1,057,408. Selective record apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 12, 1965 [Aug. 27, 1964]. No. 34487/65. Heading G5R. A selected magnetic tape 60, Fig. 3d, with its leading end tapered, Fig. 5, is blown by means 12 out of a shoot 40, through converging guides 22 to a drum 24 where transducing takes place. After transducing, the tape arrives by inertia at a guide 32, Fig. 2, from which it is blown by means 68 to a selected return guide 24 and round to its initial (or some other selected) shoot and stopped by closing the front end of its shoot 40 by differential movement of members 16, 18, Fig. 3b (or Fig. 3c, not shown). The taper on the leading edge of the tape which is preferably also a blunt arrow-form in plan (Fig. 4b, not shown), provides air lubrication as the tape travels. The drum 24 is plain and the tape, which is arranged to arrive under air-blast at about the peripheral speed of the drum, is held to it by surrounding air-pressure (Figs. 7a, 7b, not shown), ejection being achieved by bleeding-off a portion of the air adjacent an ejection slot. The tape is not necessarily magnetic.
Patent GB-1097326-A (GB)
Title: Mounting means for flexible or resilient bodies in spaces subjected to fluid pressure
Inventor: MERCIER JACQUES HENRI
IPC: F15B1/12
Filed: 1966-08-02
Abstract: 1,097,326. Hydraulic accumulators. OLAER PATENT CO. Aug.2, 1966 [Aug.2, 1965], No. 34644/66. Heading F1P. The beaded mouth of a hydraulic accumulator bladder 16 extends through a gap 23 formed between the outer container 10 and the bottom 20 of a skirted cover 11 extending within the container and has at least one groove 19 into which the bead 24 seats; the free edge 26 of the skirt 20 having spaced slots 25 adjacent the gap 23 whereby gas pressure acts through the slots 25 and urges the bead 24 into sealing-tight wedging engagement against mating surfaces 21, 22 of the container 10 and cover 11.
Patent GB-176508-A (GB)
Title: An improved process for the manufacture of sweetened condensed milk
IPC: A23C1/12
Filed: 1920-12-08
Abstract: 176,508. Roche, J. W., Tavroges, J., 0'Brien, L., Tongue, H., and Martin, G. Dec. 8, 1920. Preserving milk.-In the manufacture of sweetened condensed milk the milk is preheated and partly condensed, these operations being carried through very rapidly so as to affect the vitamines as little as possible; sugar is then added and the condensation completed in a vacuum pan. In the process described, the milk is first heated' in a flash pasteurizer to about 50‹ C. and then evaporated in an apparatus of the type in which the milk passes upwards in a thin film along the inner surface of tubes heated externally by steam. The evaporation takes place at a temperature of 45 to 56‹ C. under a vacuum of 25 to 27 inches and the milk is treated at about the rate of a gallon in 20 seconds for the two stages together. Sugar is then added and the milk may be pasteurized. It is finally evaporated at about 120‹ F. for about 70 minutes in a vacuum pan.
Patent GB-292856-A (GB)
Title: Improvements in or relating to nozzles of spraying apparatus
IPC: E01C19/17
Filed: 1927-12-22
Abstract: 292,856. Knorr-Bremse Akt.-Ges., and Uhlmann, A. Dec. 22, 1927. Air or gas pressure sprayers; nozzles for producing whirling sprays. - An atomizing nozzle more particularly for spraying rapidly hardening liquids on road surfaces comprises a casing a connected to the liquid supply pipe, a disc b inserted in the casing and perforated with oblique ducts c, arranged to give a gyratory movement to the liquid. In the disc b inclined bores e extending radially inwards convey compressed air from an annular space h around the disc b into a conical chamber g where it mixes with the liquid delivered by the passages c.