baber/WOPTO huggingface dataset:
Patent GB-949304-A (GB)
Title: Viscosity compensated turbine meter
IPC: G01F1/12
Filed: 1960-02-16
Abstract: 949,304. Rotary meters. ROCKWELL MANUFACTURING CO. Feb. 16, 1960 [Feb. 26, 1959], No. 5422/60. Heading F1F. A turbine flow meter comprising a rotatable bladed metering rotor located in a conduit and rotatable by the fluid flowing therethrough includes two co-operable elements rotatable relative to one another between which a portion of the fluid being metered is conveyed to establish a viscous shear force therebetween for controlling variations of the ratio of metering rotor speed to fluid flow rate in accordance with the viscosity of the fluid. According to one embodiment, an axial flow metering rotor 30, Fig. 3, is located between core sections 22, 28 coaxially diposed in inlet and outlet sections 20, 26 of a conduit. The turbine shaft 65 is formed with an extension 64 to which is fixed a drum 62 so that the drum rotates with the rotor 30 with slight clearance between it and a stationary cup member 68. Upstream of the rotor, a line 76 taps-off a portion of the fluid being metered and passes it through a cup member 75, apertures 80, between the drum 62 and cup member 68 and radial passageways 82 to rejoin the main flow. In passing between the drum 62 and cup member 68 a viscous shear force, depending upon the viscosity of the fluid being metered, is established. The shear force and hence turbine slip varying so that the slip due to the shear force is equal to the difference in the slip imposed upon the turbine during turbulent flow minus the slip imposed upon the turbine at critical Reynolds number. Hence during the transitional stage between laminar and turbulent flows the ratio turbine rotational speed/flow rate is kept substantially constant and equal to that over the turbulent flow range to free the meter from inaccuracies over a wider flow range. In another embodiment, Fig. 5, a second rotor 110 is fitted in the conduit upstream of the metering rotor 30 and a drum 178 is secured to the second rotor for rotation therewith within a non-rotatable cup 180. The cup 180 may be axially adjusted with respect to the drum 178 by a rack and pinion 194, 192 to vary the meter setting. In this case, the second rotor 110 is fitted with blades equally but oppositely inclinded to those of the metering rotor 30 so that it rotates in the opposite direction. Drag is applied to the second rotor by a portion of the fluid flowing through apertures 198 and the slight clearance between the drum 178 and cup 180 and according to the viscosity of the fluid vanes the tangential component of the exit velocity from the rotor 110 and so applies a supplemental tangential component of velocity to the fluid entering the metering turbine 30. Under ideal conditions the tangential component of velocity of the fluid leaving the metering turbine 30 is reduced to zero to minimise the viscosity effect of the fluidon the meter. The shaft 140 mounting the rotor 110 rotates in spaced sapphire bearings 142, 144 and is axially restrained by a resiliently backed sapphire thrust bearing 146. Specification 917,140 is referred to.
Patent GB-291498-A (GB)
Title: Improvements in or connected with concentrating tables
IPC: B03B5/04
Filed: 1927-02-26
Abstract: 291,498. Harvey, A. R. Feb. 26, 1927. Vanning - machines. -In a concentrating machine for ores having a plurality of trays on one or more inclined tables the reciprocating - mechanism is loosely connected to the tables, providing for lost motion so that a jerk may be given to the tables at some point in their travel. The tables 5, 6 are suspended by links 3 from the frame 2 in such a way that they are lifted during each cycle. A plate secured to the end of the tables is loosely connected by nuts E, Fig. 7, to a collar L loosely mounted on the crank-pin 11. The end faces of the collar are so formed that a lateral motion is given to it by pins B on the crank-pin so that the tables are moved obliquely to the axis of the frame. In a modification, Fig. 8, two spaced plates 18, 19 are secured to the tables and the crank-pin 11 lies loosely between them. The tables have overlapping trays 25, 26, 27 partly covered by corduroy 28 and having upturned lower edges. A space 23 is provided to allow material to fall on to the lower tables.
Patent GB-1042665-A (GB)
Title: An improved control circuit arrangement for an electric motor
IPC: H02P7/295
Filed: 1965-02-09
Abstract: 1,042,665. Automatic speed control. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 9, 1965 [Feb. 12, 1964], No. 5537/65. Heading G3R. [Also in Division H2] A series motor having armature 1 and field winding 2 is energized through controlled rectifier 4 from A.C. source 3, a transistor 11 becoming conductive to fire the rectifier when the voltage across capacitor 5 exceeds a portion of the back E.M.F. developed across potentiometer 13. A rectifier 12 maintains the current in field winding 2 after the current pulse through the rectifier 4 has terminated. In each of the control positions of the potentiometer 13, the circuit reaches a state of equilibrium which corresponds to a given speed. The capacitor is charged through diode 6 and resistor 7, the diode reducing the peak voltage across the capacitor. In another arrangement, the motor is compound-wound and the transistor 11 is replaced by a four-layer trigger diode associated with a pulse transformer. A further modification employs two back-to-back controlled rectifiers instead of the rectifier 4, for supplying the motor with A.C., these rectifiers being controlled by a pulse transformer having two secondary windings. The four-layer trigger diode is replaced by a bilaterally conducting diode or two diodes in parallel opposition. The series field winding is shunted by a capacitor and inductor constituting a circuit tuned to the source frequency. In another embodiment, the motor is supplied through bridge-connected controlled rectifiers and diodes. Two additional diodes also constitute a bridge circuit with the controlled rectifiers to charge the capacitor through a limiting arrangement including Zener diodes. The trigger circuit comprises two transistors and the capacitor for supplying a switching-on pulse to the rectifier when the voltage across the capacitor exceeds a threshold value.
Patent GB-706706-A (GB)
Title: Improvements in or relating to material handling apparatus
IPC: B66C9/16
Filed: 1951-03-07
Abstract: 706,706. Bridge cranes. GENERAL ELECTRIC CO.; Ltd., MITCHELL, K. J., and DENNY, R. J. S. March 5, 1952 [March 7, 1951], No. 5545/51. Class 78 (4) [Also in Groups XXXVII and XXXVIII] In material handling apparatus wherein two parts have to move in positional correspondence, e.g. a travelling bridge, Fig. 1, in which the bogies 14, 15, supporting the bridge, have to move in correspondence along their respective tracks 18, the movements of wheels associated with the two parts are transmitted electrically to a comparator which indicates any discrepancy in the two.movements and may function to stop the drive to the parts when the discrepancy reaches a set value. In the case of a travelling bridge the bogies at opposite ends of the bridge are driven by individual electric motors operated in parallel, and manual selector control is pro- 'vided for inching either one of the motors to remove the discrepancy. Associated with one of the bogies on each track is a pivoted framework, Fig. 2 (not shown), carrying a further track wheel which drives the rotor of a Selsyn transmitter directly or through step up gearing. Comparator control circuit, Fig. 3. The stator windings 31, 36 of the two transmitters 30, 35 are connected to the stator and rotor windings 47, 45 respectively of a hunter or follow through comparator 46, the rotor of which moves a pivoter 48 to indicate on a scale 49 the deviation from correspondence of the transmitter rotors and hence of the bogies. The transmitter 35 is connected to the comparator 46 through a phase adjusting follow-through transmitter 41 manually settable for zeroizing the comparator. When the pointer 48 deviates by a predetermined amount on either side of the zero position audible and/or visual signals are operated, and one or other of relays 86, 87 actuated over pointer actuated contacts 51, 52 prevents incorrect operation of the inching control. Motor control. The bogies on the opposite. tracks, Fig. 1, are driven by individual induction motors 68, 68a, Fig. 3, normally run in parallel from the three-phase supply 60 under the control of a master controller 80 which controls forward and reverse contactors 63, 64, and contactors 75-77, which by short circuiting, successively, resistors 74, 73, 72, in the motor rotor circuits provide a series of speed control steps. Closure of the contactors 76, 77 is prevented if the current to the motor primary windings is excessive by relays 82, 83 carrying the current of one of the primary phases. For inching control a selector 85 is operated, so that only one of the contactors 69, 69a is operated. When the inching controller 84 is then operated in the forward or reverse sense only the motor selected by the operated contactor 69, 69a operates at inching speed and is switched out as the indicator 48 reaches zero. The relays 86, 87 when operated prevent operation of the selector 85 and controller 84 in the wrong sense.
Patent GB-724293-A (GB)
Title: Hydrodynamic brake
IPC: G01L3/20
Filed: 1953-03-02
Abstract: 724,293. Hydrodynamic fluid friction brakes. PARKERSBURG RIG & REEL CO. March 2, 1953 [March 20, 1952], No. 5722/53. Class 103 (1) [Also in Group XXIX] In a hydrodynamic brake the entry of fresh coolwater to provide a circulation flow for preventing the temperature of the main volume from rising too high,' takes place at entry channels 60 on the back face of the stator cups in a radially inward direction. The ports 60 are in the form of nozzles that provide an accelerated jet of water in a direction along the back surface of the stator housing so as to minimize turbulence. The ports 60 extend from annular spaces 67 connected to supply control valves 77. Discharge of water from the brake takes place through the clearance space 45 between the rotor and stator cup edges into an annular groove 50 in the housing, and through outlet connections 52 to a pipe 74 having a control valve 75. The construction is notable in that, as shown in Fig. 10, only certain of the cup vanes 27 extend over the full radial depth of the brake members, the other vanes 26 being terminated by an edge 28 intermediate the inner and outer radii.
Patent GB-548915-A (GB)
Title: Improvements in and relating to ships carrying cargo
IPC: B63B3/00
Filed: 1941-07-25
Abstract: 548,915. Submersible cargo vessels; hatches. LARCOMBE, J. W. July 25, 1941, No. 6010. Drawings to Specification. [Classes 113 (i) and 113 (ii)] A submersible cargo vessel comprises an inner hull for the engines, crew's accommodation &c. which is of circular cross-section and is surrounded by an outer hull for the cargo &c. the outer hull being of lighter construction and supported on the inner hull by cantilevers. The hatches are welded or riveted to secure an airtight fitting.
Patent GB-326002-A (GB)
Title: Improvements relating to cement guns
IPC: E04F21/12
Filed: 1929-02-23
Abstract: 326,002. Pardoe, H., and Britton, A. B. Feb. 23, 1929. Repairing-apparatus.-A cement gun for use in repairing furnace linings comprises a barrel a with a slurry container and nozzle e disposed at one end, and a breech h containing means to develop a suitable volume of compressed gas to eject the slurry disposed at the other end. The means may comprise a cartridge i and trigger mechanism, or a barrel and piston as in an air gun, or a container of compressed or liquefied gas. The barrel sections are joined together by bayonet joints and a rupturable diaphragm g is disposed between the container and the barrel. Specifications 313,728 and 317,595 are referred to.
Patent GB-355178-A (GB)
Title: Process for the catalytic oxidation of ammonia
IPC: C01B21/26
Filed: 1931-02-26
Abstract: In the oxidation of ammonia the catalyst is cooled by means of boiling water or aqueous solution.  For example, the catalyst may be laid between water-cooled metal plates, or bundles of tubes containing boiling water may be used.  Specification 273,718, [Class 1 (i), Chemical processes &c.], is referred to.
Patent GB-1090672-A (GB)
Title: A method of continuously removing liquids from moist material
IPC: D04H1/645
Filed: 1965-02-11
Abstract: 1,090,672. Microwave heating. MENSCHNER G.m.b.H., [trading as JOHANNES MENSCHNER TEXTILMASCHINENFABRIK.] Feb. 11, 1965 [March 14, 1964], No. 6039/65. Heading H5H. [Also in Division F4] A method of removing the liquid phase in a two-phase system comprising a solid and a liquid phase, from a continuously moving solid material impregnated with a liquid, by the application of heat, e.g. removing the liquid from solid bonding agents in a solution in fibre webs, which method comprises subjecting the moving solid material to microwave heating without electrodes. A magnetron attached to one end of a waveguide produces heating with a frequency of at least 2À4 x 10<SP>9</SP> c.p.s. and the output of the magnetron is 2À5 k.w.
Patent GB-397853-A (GB)
Title: Improvements in or relating to thermally operated fluid valves
IPC: G05D23/185
Filed: 1932-02-29
Abstract: 397,853. Thermally actuated or controlled valves. GAS LIGHT & COKE CO., MASTERMAN, C. A., and AUSTEN, C. R., 84, Horseferry Road, London. Feb. 29, 1932, No. 6093. [Class 135.] A thermallyactuated gas cutoff valve has the thermal element in the form of a bi-metallic strip housed in a chamber communicating on the one hand with the gas supply pipe and on the other with a burner nozzle. The thermal strip 30, which is of rhomboidal form, is secured to the casing by a screw 18 and when cold is adapted to close the entrance to the passage 17 of the burner. This valve may be used to control a diaghragm-actuated main valve 23. The valve 23 is secured to a flexible diaphragm 6 clamped between metal washers 21, 22 secured between two parts of the casing. A leakage passage 41 controlled by a screw 38 connects the main gas inlet with the chamber above the diaphragm which in turn is connected to the inlet of the thermally operated valve by a pipe 2. According to the Provisional Specification the pilot burner may have a, lining of steatite, porcelain or other insulating material and may be adjustable to give complete or part closure. The bye-pass 41 may be replaced by a passage in the valve member and spindle controlled by a pointed throttling screw or by a diaphragm of known and constant porosity. A multimetallic strip may be used. Specification 347,224 is referred to.
Patent GB-1533243-A (GB)
Title: Tablet formulation
IPC: A61K31/63
Filed: 1975-02-13
Abstract: 1533243 Tablets containing sulphonamides WELLCOME FOUNDATION Ltd 13 Feb 1976 [13 Feb 1975] 6174/75 Heading A5B A tablet comprises from 80-98% (w/w) of a sulphonamide, a disintegrating agent and a granulating agent, the total amount of both agents being from 2-20% (w/w), wherein the particle size (as defined) of the sulphonamide is less than 40Ám and the disintegrating agent has a swelling capacity (as defined) greater than 5 ml/g.
Patent GB-468698-A (GB)
Title: Improvements in or connected with gas masks or smoke helmets
IPC: A62B18/04
Filed: 1936-03-02
Abstract: 468,698. Respiratory appliances. JACKSON, W. March 2,1936, No. 6212. [Class 81 (ii)] A filter for a gas-mask or smoke-hood comprises a canister a, Fig. 9, having an inhaling aperture a<1> and containing filter material such as active charcoal preferably enclosed in a bag a<6>, the filter material being surrounded by a sleeve a<5> of thick felt or the like which on applying longitudinal pressure acts as a packing to prevent leakage of inhaled gas around the filter material. The bag a<6> is of rubber-proofed or lined cloth and is contracted at each end by strings. In filling a perforated zinc or like stiff disc a<7> is inserted into one end which is then contracted and sewn to the disc ; a disc a<8> of sponge or the like is then inserted followed by the filter material, discs of medical gauze and lint a<9>, a<10>, and a second zinc disc a<11>. The bag is then inserted into the sleeve a<5>, itself inserted into the canister a preceded by wire gauze and lint discs a<2>, a<3>, and a coil spring a<4>, and the canister closed by a bayonet-jointed apertured cover a<12>. For protection against war gases the spring is removed and a chemicalsoaked gauze pad placed between sponge discs is inserted between the bag and the cover, the pressure of the pad being sufficient to compress the sleeve a<5>. For use against smoke the bag a<6> is replaced by sponges soaked in glycerine or the like. The canister a is bolted to plates d. d<1>, Fig. 2, clamping between them the material of a fabric hood b and depending from a U-section rectangular framework c<1> surrounding a mica or other eyepiece or eyepieces and also clamping the hood material. The wearer breathes through apertures in plates d, d' corresponding to aperture a', or through a rubber tube having a flattened free end inserted into these apertures. The hood shown comprises an outer cloth hood flared at the bottom and lined if desired, and an inner hood b<1> of light rubber-proofed fabric contracted around the neck by an elastic band b<2> ; the hoods are secured together at the top by a shaped scalp pad b<3> and the outer hood is drawn around the neck by an elastic strap b<4>. In a modification the outer hood is lined throughout with rubber-proofed or like material and hood b<1> is dispensed with. The hood may be fireproofed or otherwise proofed against mustard gas. The framework o<1> carries a curved padded bar e resting on the forehead. An exhaling valve may be provided above canister a and such valve may comprise a perforated metal disc g<1>, Fig. 4, covered by a rubber or mica disc g<2> held by a central bolt and a wire spring g<3> comprising radial portions and connecting portions extending beneath disc g'.
Patent GB-461591-A (GB)
Title: Improvements in means for loading vehicles with materials such as refuse
IPC: B65F3/18
Filed: 1936-03-02
Abstract: 461,591. Scavenger-vehicles. GENEVE, F. March 2, 1936, Nos. 6268, 6269, and 6271. Convention dates, March 26, 1935, March 26, 1935, and May 9, 1935. [Class 108 (i)] [Also in Group XXX] In apparatus for loading vehicles with materials such as refuse of the kind including buckets which receive the material at the rear end of the vehicle near the ground and raise it and discharge it into the upper part of the vehicle, and in which the bucket raising mechanism is combined with means for distributing the material in the vehicle, such as a scraper, the driving system acts directly on the scraper, preferably through a hydraulic jack. The hopper 9, Fig. 1, into which the material is discharged from the bucket 6 contains a scraper 10 which is attached to a pair of hydraulic jacks 11. A lever 13 connects the jacks to a chain 14 which passes round sprockets 15, 16. The latter sprocket is mounted on the same shaft as a sprocket 18 around which passes the endless chain 19 secured to the bucket 6. The sprockets 16, 18 may be on parallel shafts connected together by chain- and-sprocket mechanism. Discharge of the contents of the receptacle 1 may be effected when the casing 2 in which the bucket 6 travels is swung upwards about the shaft 5 by means of the jacks. In a modification the hopper 9, Fig. 3, is integral with the casing 2, and the two parts are pivoted to the receptacle at 27 in a readily removable manner. A foldable plate member 33 distributes the material in the receptacle. When materials are being loaded, such as straw, which have a tendency to swell, pivoted flaps 36 are provided which normally close the entrance to the hopper, but are pushed aside by the moving bucket. The casing 2 has a rear door 37 and two side doors 38 which are actuated by the bucket hoisting mechanism in such a manner that they open when the bucket is descending. In a modification the casing 2 is provided with a loading gate having apertures which fit refuse bins of a standard type and are closed by check valves. The insertion of a bin opens the valve and locks the hoisting, &c. mechanism. In a further modification the refuse is collected in a wheeled receptacle 6, Fig. 8, which can be attached to a pair of arms 44 pivoted on the vehicle. The arms are raised by a chain 19, the ends of which are secured to the receptacle at 43 and to a fixed point 49, and which passes round a sheave 50 on the scraper 10 and round sheaves 51, 52. Rollers 46 on the receptacle engage guides 47 on the vehicle. In another modification the refuse is emptied into a bucket carried by arms pivoted to the casing 2 which can be swung upwardly to deliver the contents of the bucket into the bucket 6, Fig. 1.
Patent GB-545600-A (GB)
Title: Improvements in or relating to systems of electric circuit control particularly for illumination control
IPC: G05F1/147
Filed: 1941-05-15
Abstract: 545,600. Electric supply systems for theatre lighting. IGRANIC ELECTRIC CO., Ltd. May 15, 1941, No. 6288. Convention date, May 20, 1940. Drawings to Specification. [Class 38 (iv)] Relates to lighting systems for scenic effects employing a number of groups of lamps supplied from master fader control potentiometers, variable master potentiometers to control the total scene illumination and similar potentiometers for controlling the pre-set illumination of each group, the current regulation being effected automatically by a reversible motor driving a circuit rheostat in accordance with the setting as in Specification 538,575. In the present arrangement the circuit is simplified by employing a single fader control potentiometer (instead of two) of the auto-transformer type.
Patent GB-330235-A (GB)
Title: Improvements in and relating to electric fires
IPC: F24C7/06
Filed: 1929-02-26
Abstract: 330,235. Ferranti, S. Z. de, and Ferranti, Ltd. Feb. 26, 1929. Electric radiators.-The radiator comprises a reflector a in combination with a screen b completely filling the fireplace opening, and a plate h of substantially the same contour as the reflector and arranged behind it. Three sets of apertures are provided in the screen to allow air to circulate between the reflectors and the plate h, and to pass behind the plate h to the chimney flue k. The radiator is supported by the, screen and feet j. The reflector is parabolic in vertical cross-section. Specifications 300,565, 302,256 and 324,919 are referred to.
Patent GB-974029-A (GB)
Title: Load break interrupter switch
IPC: H01H33/12
Filed: 1963-02-18
Abstract: 974,029. Gas blast switches. I.-T.-E. CIRCUIT BREAKER CO. Feb. 18, 1963 [Aug. 10, 1962], No. 6457/63. Heading H2B. In an on load isolator of the type comprising a pivoted main blade 28 making with a fixed contact 34 in open air and an auxiliary blade 41 pivoted to the main blade and making with a fixed contact in an arc-chute 50, a stop 60 is provided to prevent the auxiliary blade 41 entering the arc-chute, during closing of the switch, until the main blade has engaged contact 34. The auxiliary blade is biased into a position parallel with the main blade by a spring 44. Upon contact opening the auxiliary blade remains in engagement with the fixed contact by friction until the main blade has moved sufficiently clear of the fixed contact whereupon it opens with a rapid action. The stop 60 is lightly spring-loaded into position so as to be readily displaceable during opening. The arcchute is formed of or has a lining of gas evolving material.