baber/WOPTO huggingface dataset:
Patent GB-267289-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: H02P7/34
Filed: 1926-02-15
Abstract: 267,289. Express Lift Co., Ltd., and Meacock, J. H. Feb. 15, 1926. Systems for continuous current motors.-In a Ward Leonard control set, the generator field strength is varied smoothly by varying the speed of a separate exciter set possessing adequate mechanical inertia. In the arrangement shown, the generator 5 of the Ward Leonard set has three field windings one of which is connected to a small exciter dynamo 10 coupled to a motor 11. By starting up the motor 11 and varying stepped resistance 17, 18, 19 in circuit therewith the excitation of the field 9 is varied in a gradual manner and the working motor 6 is correspondingly accelerated or decelerated. The generator 5 has also a shunt field 8 of constant strength and reversible direction, and a series field 7 for selt-regulating purposes. The self-regulating action is assisted by providing the machines of the exciter set with compensating fields 14, 15. The arrangement may comprise electromagnetic contactors 20, 21, 22 which cut out the resistance sections 17, 18, 19 automatically in succession as the motor 6 accelerates. The Provisional Specification describes an arrangement in which the generator of the Ward Leonard set is driven by an induction motor which also drives an additional exciter machine.
Patent GB-769120-A (GB)
Title: Improvements in and relating to the separation of nickel from cobalt
Inventor: MERRE MARCEL DE
IPC: C01G51/00
Filed: 1955-02-14
Abstract: A solution containing nickel and cobalt sulphates and/or chlorides and containing the metals in a weight ratio Ni:Co higher than 1 is treated to separate the metals by precipitating together the nickel and cobalt as hydroxides, removing the precipitate and adding it to a further quantity of the primary solution, subjecting the solution containing suspended hydroxides to a reduction with a reducing gas at a temperature above 100 DEG C. and at super-atmospheric pressure, thus precipitating nickel as metal from solution and concentrating cobalt in the solution, the amount of hydroxides added being such that the pH during reduction does not fall below 2.  The hydroxides may be progressively added and dissolved in the solution during reduction so that the pH is maintained between 2 and 3.  The solution remaining after reduction may be treated to remove any residual nickel by the methods disclosed in Specifications 650,595, 655,149 and 683,679. Specification 269,164 [Class 1(iii)], also is referred to.ALSO:A solution containing nickel and cobalt sulphates and/or chlorides and containing the metals in a weight ratio Ni : Co higher than 1 is treated to separate the metals by precipitating together the nickel and cobalt as hydroxides, removing the precipitate and adding it to a further quantity of the primary solution, subjecting the solution containing suspended hydroxides to a reduction with a reducing gas such as hydrogen at a temperature above 100 DEG C. and at superatmospheric pressure e.g. 15-45 atmospheres, and removing the precipitated nickel, the amount of hydroxides introduced into the primary solution being such that the pH of the solution during the reduction does not fall below 2.  The product nickel should contain less than 1 part of cobalt to 100 parts of nickel.  The hydroxides may be progressively introduced and dissolved in the solution during reduction so that the pH is maintained between 2 and 3.  The solution remaining after reduction may be treated to remove any residual nickel by the methods disclosed in Specifications 650,595, 655,149 and 683,679, [all in Group III].  Specification 269,164 [Class 82(1)], also is referred to.
Patent GB-100527-A (GB)
Title: Improvements in Balls for Shrapnel Shells and the like and Method for Manufacturing the same.
Inventor: WILSON ALFRED WILLIAM GUNNING
IPC: F42B12/78
Filed: 1915-06-05
Abstract: 100,527. Wilson, A. W. G. June 5, 1915. Projectiles.-Relates to jacketed bullets for shrapnel shells, and consists in making them completely spherical and completely jacketed as shown at E by inserting a ball x of lead between two cups B, C of steel stamped from disks, and subjecting the whole to pressure. Specification 8361/15 is referred to.
Patent GB-524888-A (GB)
Title: Improvements relating to screening apparatus
IPC: B03B9/06
Filed: 1939-02-10
Abstract: 524,888. Sifting apparatus. TURNER, H. Feb. 10, 1939, No. 4376. [Class 117] Rotary screens comprise an inner drum A, Fig. 1, of perforated sheet or wire mesh material, and an outer concentric drum B formed of bars E which extend longitudinally of the drum. The bars may be uniformly spaced or the spacing may increase from the feed to the discharge end, and may be secured by welding or bolting to end rings b', b<SP>4</SP> with intermediate supporting rings F. Alternatively, the bars may be made up into arcuate frames which are built up on rings to constitute the drum, the spacing between the bars of the frames in successive rings increasing in the direction of the discharge end. The outer drum is supported from the inner drum by brackets and may be of truncated form or cylindrical in which case it is provided with an internal helical rib for conveying the material through it.
Patent GB-884423-A (GB)
Title: Conductive ceramics
IPC: C04B14/48
Filed: 1959-02-09
Abstract: An electrically and heat conductive fibrous ceramic composition comprises a matrix of ceramic forming materials such as sand, terra cotta, plaster cement, concrete, lava, diatomaceous earth and fuller's earth and metal filaments or fibres isotropically distributed through the matrix, the fibre length being greater than that of the matrix particles and not exceeding eight times the diameter of the matrix particles.  The metal fibres may be of aluminium, tin, copper, iron nickel or alloys of these and any metal below aluminium in the electromotive series and the fibres should have a maximum diameter of 0,02 inches and a maximum length of 2 inches.  The mixture contains up to 15% by volume of fibres and may also contain an aggregate and a hygroscopic material such as calcium chloride.  After mixing with water the mixture is shaped and then allowed to set.  Heating or cooling coils or pipes may be embedded in the composition and the fibres may also be precoated with a plastic resin or liquid paraffin. Specification 847,228 is referred to.
Patent GB-954601-A (GB)
Title: Signal controlled inverter-power amplifier
Inventor: COLE JIMMY RAY
IPC: H02M7/515
Filed: 1962-02-06
Abstract: 954,601. Inverting;. CONTINENTAL OIL CO. Feb. 6, 1962 [Dec. 8, 1961], No. 4550/62. Heading H2F. Each of the four semi-conductor controlled rectifiers P1, P2, P3, P4 of a bridge connected inverter has an associated commutating capacitor C1, C2, C3, C4 and further controlled rectifier RB1, RB2, RB3, RB4, for reverse biasing the main controlled rectifiers to turn them off. In the Figure, the capacitors are charged from transformers AT-1, AT-2, whose primaries are in series with the load, through diodes D1, D2, D3, D4. Alternatively the capacitors are supplied through resistances from rectifiers fed from an A.C. source which also drives the inverter through a separate three-phase bridge rectifier (Fig. 2, not shown), or through transformers whose primaries are in parallel with the load (Fig. 3, not shown), or through transformers whose primaries are energized by the control circuit of the inverter (Fig. 4, not shown). The control circuit provides two trains of square waves with 180 degrees phase difference. The leading edge of each is arranged to trigger one pair of main rectifiers, and the trailing edge of each to trigger the further rectifiers. Consequently when the control voltage ceases, all the rectifiers are turned off. Preferably the duration of the control signals is a little less than 180 degrees, so that one pair of main rectifiers are turned off before the others are turned on. Sine wave control signals may be used. The inverter may be operated at a variable frequency, and may supply electromagnetic transducers used in geophysical equipment for seismic surveys. Specifications 768,845 and 837,917 are referred to.
Patent GB-781689-A (GB)
Title: Push-pull cable apparatus
IPC: F16C1/14
Filed: 1956-02-14
Abstract: 781,689. Bowden mechanism. PACIFIC SCIENTIFIC AEROPRODUCTS, [formerly STURGESS, Inc.]. Feb. 14, 1956 [Feb. 16, 1955], No. 4636/56. Class 80 (3). The ends of a Bowden cable and its sheath are arranged to be quickly detachable. The sheath 2 has secured thereto at its ends by swaging or prick-punching sleeve members 3, 31 which are grooved at 6, 6<SP>1</SP> to receive C-shaped washers 7, 7<SP>1</SP> which act as abutments for securing against tubular members 16, 16<SP>1</SP> in fixed mounting plates 19, 19<SP>1</SP> by nuts 23, 231. The inner cable 1 has terminal rods 4, 41 secured to its ends which rods slide in the sleeve members 3, 3<SP>1</SP> and have small split washers 5, 51 mounted in grooves at their ends for engagement in recesses 14, 15 of actuating and actuated members 11, 11<SP>1</SP> respectively. Alternatively the rods 4, 4<SP>1</SP> may have a transverse cylindrical portion for engagement in the recesses of members 11, 11<SP>1</SP>. Fig. 4 shows an arrangement for connecting two lengths of a Bowden cable in the above described manner.
Patent GB-1005332-A (GB)
Title: Ink
IPC: C08L77/00
Filed: 1964-02-04
Abstract: An ink comprises a dye or a pigment and a solution of a linear amorphous chlorsulphonated ethylene-propylene copolymer.  In addition, such materials as epoxy resins, polyamines and polyamides may be present.
Patent GB-606260-A (GB)
Title: Radio tube clamp
IPC: H01R33/975
Filed: 1945-02-26
Abstract: 606,260. Caps and holders for discharge tubes. PHILCO RADIO & TELEVISION CORPORATION. Feb. 26, 1945, No. 4795. Convention date, Feb. 26, 1944. [Class 38 (i)] A clamping device for retaining a radio tube in its socket comprises a spring member having a portion thereof adapted to engage the periphery of an unflanged cylindrical tube base and provided also with a projecting shoulder portion adapted to engage a projection such as a flange on the tube base when the latter is so provided. The device shown comprises an annular member of spring metal having base portions 7 screwed to the chassis and side members 9 rising from the plane of the chassis and provided with bite portions 10 for gripping a cylindrical tube base. The members 9 are provided with upstanding arms 11 carrying lugs 14 for engaging a flanged tube base. Flared edges 12 on the arms 11 and the triangular form of the lugs 14 facilitate entry of a flanged tube base by cam action. The tube is released in the case of either type by outward and downward flexure applied to the arms 11. The clip may be made in two halves separately secured to the chassis and one half may be used alone. Instead of specially provided bite portions 10 the inner edges of the members 9 may be designed to grip the tube.
Patent GB-707632-A (GB)
Title: An improved electrical circuit for producing an output potential depending on whether a plurality of input potentials severally have a predetermined higher value or a predetermined lower value
Inventor: KATES JOSEF
IPC: G06F7/57
Filed: 1950-02-08
Abstract: 707,632. Digitalelectric calculating apparatus. CANADIAN PATENTS & DEVELOPMENT, Ltd. Jan 16, 1951 [Feb. 8, 1950; Feb. 28, 1950], Nos. 4899/53 and 4900/53. Divided out of 707,534. [Group XL(a)]. Class 106 (1). [Also in Group XL(a)] An electrical circuit, e.g. a calculating circuit, for producing an output potential depending on whether a plurality of input potentials severally have a predetermined higher value or a predetermined lower value comprises a thermionic valve having a cathode, a plurality of input electrodes so disposed that between adjacent electrodes there is a gap exposed to the cathode, and a target electrode associated with and exposed to each or a number of such gaps and situated on the side of the input electrodes remote from the cathode, the dimensions and locations of the several electrodes being such that electrons passing through the gaps and only such electrons will strike the target electrodes associated therewith, and means for applying potentials to the electrodes so that if both the input potentials on adjacent input electrodes have a higher value electrons will pass through the gap between them to a target electrode, but if one of the electrodes has a lower value electrons will not pass through the gap. Fig. 3 shows an exploded view of a valve for a binary adding system which comprises a central cathode 35, three input electrodes 36, 37, 38, each of which can be at one of two potentials, positive or negative, a secondary electron collecting electrode 65 and two output electrodes 51, 55 corresponding to the carry and the sum respectively. The inputs correspond to the carry from the previous cell, the addend and the augend ; if one of them is positive current flows through the aperture in the centre of the corresponding control electrode and impinges on one of the fingers of the sum output electrode 55; if two of them are positive current flows through the space between the two control electrodes, as shown in Fig. 7, and impinges on the carry output electrode 51 ; and if all three inputs are positive current flows to each output electrode. The operation of the system is illustrated in the block schematic diagram shown in Fig. 2 wherein each of the cells is a valve of the type described ; the addition of one and one in the first cell results in a carry which is fed to the second cell and so on. A similar system can be used for subtraction, using a valve with output electrodes of slightly different design, the three inputs corresponding to the carry, subtrahend and minuend and giving two outputs corresponding to the difference and the carry. For multiplication the tube shown in Fig. 14 is used, the tube having four input electrodes 141-144 and two output electrodes 149, 153 and serving to perform the operation shown in the block schematic diagram in Fig. 15.
Patent GB-1096183-A (GB)
Title: Improvements in or relating to crates
Inventor: TAPPY RONALD ALAN
IPC: B65D1/24
Filed: 1965-02-04
Abstract: 1,096,183. Bottle crates &c. MARLEY TILE CO. Ltd. Nov. 26, 1965 [Feb. 4, 1965], No. 4955/65. Heading B8P. A plastics bottle crate etc. has a number of support pillars extending between the base and the upper rim, each pillar being provided at a predetermined point along its length with an inwardly directed set, which when the crate is under a compressive load e.g.. stacked, would tend to cause the pillar to buckle inwardly, and each pillar being provided with one or more bracing members serving to resist such tendency to buckle. It is stated that the crate may be triangular with a pillar at each corner.
Patent GB-232181-A (GB)
Title: Anti-toxic sera and methods of preparing same
IPC: A61K38/00
Filed: 1925-02-23
Abstract: 232,181. Presbyterian Hospital in the City of New York, (Assignees of Dochez, A. R.). April 14, 1924, [Convention date]. Antitoxins ; bacteria, cultivating. - A process for preparing anti-toxic serum for the treatment of scarlet fever, or for other diseases in which a soluble toxin cannot effectively be prepared by cultivation of the bacteria in vitro, or within the animal body in the usual manner, comprises the steps of injecting into an animal body a quantity of fluid agar, gelatine and agar, or equivalent nutrient medium which will solidify to some extent and will protect the bacteria against the deleterious influence of the body fluids, infiltrating this mass with a bacterial culture, repeating these steps to obtain the requisite degree of immunization, and preparing the anti-toxic serum in the usual manner. According to an example, a horse is preliminarily tested for glanders and injected with tetanus anti-toxin, and is then injected with melted one per cent nutrient agar. After one or two minutes a concentrated suspension of streptococci scarlatinae in broth containing phosphate is infiltrated into the injection mass. These steps are repeated several times with increasing doses of the streptococci, and the serum is then obtained in the usual manner. The animal may afterwards be injected and bled alternately. The culture used for immunizing is subjected to frequent passage culture through mice and is preserved on ice in rabbit's blood broth.
Patent GB-107605-A (GB)
Title: Improvements in or relating to Dyeing.
Inventor: MALCOLMSON NORMAN
IPC: D06P1/34
Filed: 1916-04-05
Abstract: 107,605. Malcolmson, N., and Kelsey, H. H. April 5, 1916. Dyes from natural products.-Textile materials are dyed in an aqueous or spirit bath containing seaweed of the Melanosperm, Rhodosperm, - or Chlorosperm groups, either in the raw state or in paste or powder form; the use of dulse, and of the mixtures of laminaria with indigo described in Specification 1789/02, is excluded. The paste may be made by boiling the seaweed in water and then crushing it; the powder may be made by drying such paste, or by drying and grinding the weed. Sulphuric acid may be added to the dye-bath. Other dyes, mordants, &c. may be used in conjunction with the seaweed. Specification 142/81, [Class 15, Bleaching &c.], also is referred to.
Patent GB-469195-A (GB)
Title: Improvements relating to flushing cisterns for water closets and the like
IPC: E03D1/012
Filed: 1936-02-19
Abstract: 469,195. Siphon-discharge water-wastepreventers. DUDLEY, Ltd., T., and DUDLEY, T. Feb. 19, 1936, No. 5001. [Class 26] A siphon-operating lever of a flushing-cistern is provided at or about its fulcrum with a projection b<2> adapted to operate in a slot or recess a<1> in or on the lid and contact the extremities of the slot &c. for limiting the pivotal movement. The pivot-pin b<1> of the lever is accommodated in open-ended slots in lugs such as a<3> and the projection is of tapering formation to permit easy withdrawal. Specification 454,551 is referred to.
Patent GB-851386-A (GB)
Title: An improved stocking and method of manufacture
Inventor: EDWARDS AUBREY GORDON
IPC: D04B11/28
Filed: 1958-02-15
Abstract: 851,386. Yarns and threads. PECK Ltd., H. T. H. Feb. 9, 1959 [Feb. 15, 1958], No. 5005/58. Drawings to Specification. Class 120(3). [Also in Groups VII and VIII] A combination thread used for seaming a woman's fully-fashioned nylon stocking comprises a temporary soluble yarn, e.g. silk, and a permanent yarn, e.g. nylon. The latter may be of the same count as that of the yarn from which the stocking is knitted, e.g. 15 denier, and the temporary yarn of a denier such that the combination thread is of the same count as the thread normal used in the seaming machine. In the Complete Specification it is stated that the combination thread may consist of 2/15 denier silk plus 2/15 nylon. It is also stated in the Provisional Specification that the combined thread may consist of 3 thread silk plus 1 thread (15 denier) nylon.
Patent GB-114660-A (GB)
Title: Improvements in the Preparing of Aerated Drinks or similar Fluids and Apparatus for such purpose.
Inventor: BOUVIN KARL THURE
IPC: A23L2/40
Filed: 1917-04-11
Abstract: 114,660. Bouvin, K. T. April 11, 1917. Gazogenes, seltzogenes, and siphon bottles.-In preparing aerated liquids by the action of solutions of acids such as tartaric or citric acids upon solutions of salts which generate carbon dioxide, the two solutions are enclosed in a vessel and are separated by permeable walls so that the reaction takes place slowly. The salt solution is placed in a siphon vessel a, and the acid solution in a vessel h, made of unglazed earthenware, which is inserted into the vessel a while tilted. Alternatively, the vessel h may be inserted into the top of the vessel a, and the outlet for the beverage be placed in the base. The vessel h may be divided by partitions to receive solutions of different acids.
Patent GB-805595-A (GB)
Title: Improvements in apparatus for growing plants in nutrient solutions
IPC: A01G31/02
Filed: 1956-02-20
Abstract: 805,595. Soil-less plant culture. KNIPE, A. C. Feb. 18, 1957 [Feb. 20, 1956], No. 5131/56. Class 6(2). An apparatus for growing plants in an inert porous bed which is periodically inundated with nutrient solution includes a weir over which excess solution escapes, the weir being periodically raisable and lowerable to fill and empty the trough containing the bed, the rate of filling and emptying the trough being controlled by the rise and fall of the weir independently of the rate of working of the pump supplying the solution. The trough 1 has a barrier 3 to retain the gravel 2, the barrier having a gap 5 at its base allowing the passage of the solution to and from a chamber 4 which contains the weir P, V. The weir comprises a hollow cylinder P slidable vertically in a guide V in the base of the chamber. The cylinder is raised and lowered by an electric motor B driving a shaft E through reduction-gearing C and a flexible coupling D. The shaft E is threaded and carries a nut which is linked to the cylinder P by levers K, L, N, the lever N being attached to the cylinder by a connecting rod Q, the end of which R is adjustable along a slot T on the lever N, to vary the stroke of the cylinder P. The levers L, N are pivoted at M, balance-weights S being provided to act on the lever-system at the same point. The stopping of the pump supplying the solution and the reversal of the motor B are controlled by switches (not shown) but a 24-hour electric clock starts the pump and motor at appropriate intervals.