baber/WOPTO huggingface dataset:
Patent GB-526191-A (GB)
Title: Improvements in or relating to weighing machines
IPC: G01G23/18
Filed: 1939-03-09
Abstract: 526,191. Weighing - apparatus. KRAUT, sen., W., KRAUT, jun., W., and KRAUT, E. March 9, 1939, No. 7718. Convention date, Sept. 23, 1938. [Class 143] Printed records, apparatus for giving.-A pendulous-weight weighing machine having a printing device comprises locking means for the printing mechanism, and a device adapted to explore the balance system without affecting the swing- ing capability of the system and to release the locking means only when an endeavour is made to operate the printing mechanism and only then if the balance system is at rest or swings within the limits of graduation error. A printed record on a piece of paper lying on a platen 43 is obtained by rotation of the printing handle 24. The handle, operating through gearing moves a transverse rod 17 to the left. An arresting finger 35 and a set of stepexploring feelers follow the movement of the rod 17 and, provided a notched and stepped disc 4 on the indicator spindle is substantially at rest, the arresting finger first engages and holds the disc and then the feelers explore the steps in the disc and thereby set the printing wheels 26, 27, 28. Further movement of the printing handle rocks a printing stirrup 45 and effects the record. If however the weighing mechanism is not substantially at rest, a swingable member 60 resiliently mounted on an arm 57 and moved by a double cam 52 into contact with the notches in the moving disc 4, is displaced by the passing notches, and by obstructing a pin 66, Fig. 6, prevents the further advance of the arm 57. The arm 57 is connected by a rod 58 to a locking pawl 50, and in the backward position of the arm the locking pawl maintains the lock upon the actuating mechanism and prevents the further rotation of the handle 24 thereby preventing the arresting finger 35 on the feelers engaging the disc 4 or a printing operation being performed. If however, the disc 4 is at rest, the swingable member 60 rests in one of the notches of the disc and the pin 66 may then enter a recess 65 in the swingable member thereby allowing the arm 57 to advance sufficiently to withdraw the locking pawl 50 and permit the continued rotation of the handle 24 in order to effect a printed record. A stop 69 limits the forward movement of the swingable member 10.
Patent GB-846479-A (GB)
Title: Improvements in electric power control systems
IPC: G05F1/14
Filed: 1957-03-08
Abstract: 846,479. Protective systems depending upon two or more sources. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 8, 1957 [March 13, 1956], No. 7720/57. Class 38 (4). An electric control system for governing the supply of power to a load 1 the impedance of which changes from a low value to a high value as a result of current flow therein, for example the heaters of thermionic valves, the load 1 being connected by way of a voltage regulator 19 to a first supply 11 of voltage which has a value substantially less than the normal rated input voltage and subsequently to a second source 13 which has a value equal to the normal input voltage. The change-over from source 11 to source 13 is under the control of a device 29 which imparts a predetermined time interval to the change-over operation by way of a relay CR. The voltage regulator 19 is of a kind which, when the voltage input thereto is from the source 13, will regulate for constant output volts when the load current is between zero and full load value but which, should the load current exceed full load value will cause the output voltage to drop sharply to zero (see curve EIa in Fig. 2). The corresponding regulator curve when the input to the regulator is from the lower voltage source 11 is designated EIb. Thus by first connecting the load to a lowvoltage supply the current inrush to the load while it has low impedance is limited.
Patent GB-824900-A (GB)
Title: A process for the manufacture of universal joints
IPC: F16C11/06
Filed: 1958-03-11
Abstract: 824,900. Moulding bearings. LANGEN, V., [trading as EHRENREICH & CIE, A.]. March 11, 1958 [March 12, 1957], No. 7746/58. Class 87(2). A bearing member 11 is formed in the socket casing 1 of a universal joint by introducing synthetic plastic material between the casing 1 and a core 6 which corresponds to the bearing surface of a ball member of the joint. The core 6 is provided on one of two closure members 4 and 7 which seat on machined portions of the casing 1. A resilient disc 8 and ring 9 are provided. The plastic material is poured or injected through an aperture 5.
Patent GB-272429-A (GB)
Title: Machines for separating the laminae of mica plates or blocks
IPC: H01B3/04
Filed: 1927-03-21
Abstract: 272,429. Frederick, L. T. March 21, 1927. Mica laminae are separated from one another by subjecting the material to suction on opposite sides and pulling it apart. The laminae are previously loosened by heat treatment, which may be preceded by soaking in water or other fluid. Fig. 1 shows an apparatus for effecting the treatment, in which the mica blocks in a hopper 10 are drawn by suction on to a pervious conveyer belt 20 passing over a perforated non-rotating cylinder 18 from which the air is withdrawn. The mica is conveyed through a heating chamber 30 and then falls down a shoot 34 where it is beaten by revolving arms 36. The blocks next pass into the nip of a pair of pervious belts 40, 42 moving over non-rotating perforated evacuated cylinders 44, 46 and as the belts diverge again the blocks are pulled apart by the suction as shown in Fig. 4. The split flakes fall from the belts as these leave the evacuated cylinders. A second stage of suction elements 80, 82, 84, 86 is preferably fitted.
Patent GB-843873-A (GB)
Title: Distributor arrangement
Inventor: REIJNS GERARDUS LOUIS
IPC: B21D51/40
Filed: 1958-03-11
Abstract: 843,873. Circuits employing bi-stable magnetic elements. DE STAAT DER NEDERLANDEN TEN DEZE VERTEGENWOORDIGID DOOR DE DIRECTEUR-GENERAL DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. March 11, 1958 [March 18, 1957], No. 7793/58. Class 40 (9). In a distributer comprising magnetic cores T1-T4 of rectangular hysteresis loop material each with an input winding Wb, an output winding Wa, an advance winding Wc, and a trip or restoring winding Wd which sets up a starting condition when energized by putting core T1 alone in a characterizing magnetic state, this state is moved from core to core over transfer circuits each comprising an output winding, a rectifier C1-C4 and an input winding, all the transfer circuits being connected in parallel with a common resistor R. The distributer is driven by advance pulses α, # which are applied alternately to respective core groups T1, T3 and T2, T4. A two-stage distributer which operates as a trigger pair is also described, Fig. 3 (not shown). Reference has been directed by the Comptroller to Specification 777,519.
Patent GB-1176821-A (GB)
Title: Sulphomethyl Derivatives of Polymyxin B.
IPC: C07K7/62
Filed: 1967-02-17
Abstract: 1,176,821. N-sulphomethyl polymyxin B. CHAS PFIZER & CO., Inc. 17 Feb., 1967 [2 June, 1966], No. 7808/67. Heading C2A. A pH and potency stabilized N-sulphomethyl polymyxin B is prepared by hydrolyzing an aqueous solution of N-sulphomethyl polymyxin B sodium salt at an elevated temperature, e.g. 50-60‹ C., while adding sufficient physiologically acceptable acid to the reaction mixture to maintain the pH thereof between 6À5 and 7À4 until the reaction mixture attains a constant pH between 7À0 and 7À2 and then recovering the resulting product. The preferred acid is sulphuric, but hydrochloric, succinic, citric, ascorbic, maleic and gluconic may be used. On completion, the reaction mixture may be filtered with filter aid, sterile filtered and lyophilized. A therapeutic composition for the treatment of coliform infections in animals comprises the above N-sulphomethyl polymyxin B in an injectable vehicle.
Patent GB-1496922-A (GB)
Title: Process for making polyurethane foams
IPC: C08J9/00
Filed: 1975-02-25
Abstract: 1496922 Polyurethane foams containing addition polymers DOW CHEMICAL CO 25 Feb 1975 7825/75 Headings C3R and C3C A process for making a flexible polyurethane foam comprises subjecting to foaming conditions a composition comprising a polyether polyol having 2 to 3 hydroxyl groups per molecule and containing a polymer in latex form prepared from one or more ethylenically unsaturated monomers free from groups reactive with NCO or OH groups under urethane-forming conditions and an organic polyisocyanate wherein the polyol contains from 2-50 wt. per cent of the polymer based on the total weight of the polyol and the polymer and the polymer has an average particle size of from 1000 to 10,000 angstroms. The foams produced can have a resiliency of at least 50% and an ILD modulus of at least 2À2 and a density which usually ranges from 28À8 to 56À1 kilogram/cu.m. Suitable polyols may be prepared by reacting a compound with 2 to 3 active H atoms per molecule, e.g. ethylene or propylene glycol, glycerine, trimethylolpropane, hexane diol or triol with an alkylene oxide or epihalohydrin. The polyol usually has an OH equivalent weight of 900-2300. The polymer suitably has a M.Wt. of at least 5000 and are preferably prepared from a mixture containing 45- 97% wt. styrene and 3-55% wt. acrylonitrile, methacrylonitrile, or an ester of acrylic or methacrylic acid having 1-8 carbon atoms in the alcohol portion of the ester. Suitable polyisocyanate are 2,4- and/or 2,6-toluene diisocyanates and NCO-containing prepolymers thereof. The NCO : active H ratio is usually 0À8 : 1 to 1À5 : 1À0. The blowing agent may be water and the catalyst may be at least one tertiary amine optionally in admixture with an organotin catalyst. Optional ingredients include auxiliary blowing agents, e.g. aliphatic and halogenated aliphatic hydrocarbons boiling below 110 C.; silicone oil cell control agents; fillers such as CaCO 3 , barytes, sand and expandable polystyrene beads; and fire retardants, e.g. tris(2,3-dibromopropyl)phosphate and tris- (dichloropropyl)phosphate. In the examples foams are prepared from a polyol which is the reaction product of glycerine with propylene oxide subsequently endcapped with ethylene oxide; a polymer which is a latex copolymer of styrene and either acrylonitrile or methyl acrylate with average particle sizes ranging from 1130-5225; a polyisocyanate which is a mixture of an 80/20 mixture of 2,4-/2,6-toluene diisocyanate and either a crude toluenediisocyanate or a polymeric polyisocyanate; a catalyst which is a mixture of triethylene diamine and bis(2-dimethylaminoethyl)ether alone or together with either N-ethylmorpholine or a mixture of dibutyltin dilaurate and an amine catalyst; water and a silicone oil which is either a dimethylsiloxane polymer or a non-hydrolysable surfactant.
Patent GB-277241-A (GB)
Title: Improvements in or relating to the closures of milk cans and the like
IPC: B65D55/06
Filed: 1927-03-22
Abstract: 277,241. Kauders, A. March 22, 1927. Fastenings for milk cans; seal fastenings.-The " plug " lid of a milk can or other vessel is provided, with a locking member c adapted to engage a loop e pivoted to the body of the can and to be closed or secured by a plate h, Fig. 4, of wood which is slidden into grooves f, f<1> formed in the sides of the locking member. Springs g, g<1> housed in the grooves take into recesses l in the plate to prevent withdrawal, and the plate is provided with abutments k to limit insertion. An abutment m is also provided on the locking member or on the pivoted loop e. To open the device the abutments k and the advanced end of the locking plate are broken off and the plate is pushed forward and more of the advanced portion broken away until the plate is entirely removed..
Patent GB-836085-A (GB)
Title: Improvements in and relating to gauges of divider type
IPC: G06M1/08
Filed: 1958-03-12
Abstract: 836,085. Dividers. JAKOBSEN, P. L. March 12, 1958 [March 19, 1957], No. 7918/58. Class 97(3) [Also in Group XIX] Dividers have a hollow handle containing a counter which records the number of rotations of the legs when they are stepped along a distance to be measured. As shown, the legs are pivoted to a plate 8 attached to a stem 9 accommodated in a bore 7 in the handle 1. The bore opens into a recess 6 containing the counter 30 having a squared shaft 28 driven from a recess in the end of the stem 9. The counter is read through a window in the side of the handle. A member, not shown, projecting laterally from the handle enables the handle to be held without rotation.
Patent GB-745221-A (GB)
Title: Machine output efficiency registering device
Inventor: WOODWARD STANLEY
IPC: D06F67/00
Filed: 1953-03-23
Abstract: 745,221. Registering output of machines. BAKER PERKINS, Ltd. May 31, 1954 [March 23, 1953], No. 7927/53. Class 106 (4). A device for registering the output efficiency of machines such as ironing-machines, wherein an intermittent supply of flat articles are successively treated by passage through the machine, comprises a master counter driven from the main machine drive and subsidiary counters associated with each lane of the machine, driven only in the event of an article passing a given point in the feed path and driven in proportion to either the lengths of the gaps between successive articles or the length of each article, the counters being calibrated for linear measurement. Electrically-operated counters 7, 24, 25 in series with micro-switches 6, 11, 12 register respectively the potential output and the actual output in two lanes, the microswitches being actuated by cams 3, 9, 10 driven from the main drive 5 through reduction gearing, chains and sprockets. Selectively engageable clutches 19 and 20 are incorporated in the drive to each cam 9, 10 so that each is driven only when its associated clutch is engaged by the operation of a solenoid 28 or 29. A photoelectric cell 26 at the discharge end of each lane detects the passage of an article and actuates the corresponding solenoid 28, or 29 to control clutch 19 or 20 and also operates a secondary counter 33 or 34 to register the number of articles treated. Other methods of detecting and counting may be employed.
Patent GB-1489675-A (GB)
Title: Generator having shielded current transformers positioned therein
IPC: H02K11/00
Filed: 1975-02-26
Abstract: 1489675 Electrical generators WESTING- HOUSE ELECTRIC CORP 26 Feb 1975 [29 March 1974] 7974/75 Heading H2A A generator includes one or more current transformers 26, 28, 30, each comprising a non- magnetic conductive flux shield 60, a closed magnetic core 48, and a layered winding 52; the winding 52 has substantially one half of its layers with the turns progressing in one direction around the circumference of the core 48, e.g. direction 80 for a layer of turns 81, 83, 90, 86, and one half of the layers with the turns progressing in the opposite direction, e.g. direction 82 for the layer of turns 84, 88; the flux shields 60 are positioned adjacent to portions of the stator end-winding structure, e.g. adjacent to conductors 46; and each transformer has a lead 32, 34 or 36 of the stator winding passing both through the middle of the core 48 and through an opening 66 in the base 62 of the shield. Each transformer provides inductive coupling between the stator winding lead and the winding 52, and thereby allows the current through the lead to be sensed, e.g., for fault detection purposes. In a multi-phase stator winding arrangement, the lead through each transformer is connected to a phase winding other than the one to which the transformer lies adjacent. Each transformer shield may have a top-cap (72, Fig. 4, not shown).
Patent GB-492194-A (GB)
Title: Improvements in the manufacture and production of dyestuffs
IPC: C09B47/067
Filed: 1937-03-19
Abstract: Water-soluble dyes are made by condensing dinitriles of aromatic o-dicarboxylic acids (4 mols.) in the presence of bases of the pyridine or quinoline series (1-6 mols.) and a diluent with halides of polyvalent metals (at least 1 mol.) and separating the water-soluble fraction from the dyestuff mixture obtained by treatment with water.  Starting materials specified are phthalodinitrile and its 4-methyl-or 4-chlor-derivatives, 1 : 2-, or 2 : 3-dinitrilo-naphthalene and compounds capable of conversion into such dinitriles, viz. o-cyanobenzamide and o-cyanobenzaldoxime. Halides of metals of the iron group and those of magnesium, zinc, aluminium and bivalent copper may be used.  Compounds of the halides with pyridine and quinoline bases may also be used.  The products dye fabrics of all kinds including paper and viscose artificial silk in blue to blue-green shades. In the examples the following reactants are heated in the presence of a diluent and the product extracted with water to which acid may be added if desired: phthalodinitrile; pyridine, quinoline; cobaltous chloride, zinc chloride, aluminium chloride, copper chloride, ferric chloride; di- or tetrapyridino cobalto chloride or bromide, di- or hexapyridino cobalto iodide, mono-, di- and tetraquinolino cobalto chloride, dipyridino or diquinolino zinc chloride; solvents: ligroin, petroleum ether, benzene, toluene, xylene, mono- and trichlorbenzene, nitrobenzene. Specifications 459,780 and 482,387 are referred to.
Patent GB-182867-A (GB)
Title: Improvements in circuit arrangements for multiplex cable telegraphy and telephony
IPC: H03H7/01
Filed: 1921-03-15
Abstract: 182,867. Gill, H. A., (Deutsche Telephonwerke Ges.). March 15, 1921. Filter, rejector, and separator circuits.- Comprises means of the weatstone-bridge type for filtering or separating currents of different frequencies in a system of multiplex high-frequency cable telegraphy or telephony. In the form shown in Fig. 3, the apparatus comprises four condensers c. c1 arranged in the arms of a bridge, the cable I, II being connected across one diagonal, and the receiving-instrument, or a further series of bridges, being connected across the other diagonal. The condensers are proportioned so that for all frequencies the bridge is balanced, but across opposed condensers are connected inductance coils d with cores consisting of thin axial iron wires. These have the effect of unbalancing the bridge for the lower range of frequencies, which consequently operate the receiver. It is stated that the critical frequency depends on the degree of subdivision of the iron cores. When a series of bridges are employed as shown in Fig. 3, the separation may be carried further, only the lowest frequency ultimately reaching the receiver E. Alternatively, as shown in Fig. 2, the bridge may comprise capacities c1, c2' c3 in three arms and an inductance coil without iron core in the fourth arm; or other arrangements of capacity and inductance may be used in known manner and tuned so as to pass a particular frequency and to transmit all other frequencies to the receiver E. Bridges of this latter type may be arranged in cascade with bridges of the type shown in Fig. 3. Specification 174,312. is referred to.
Patent GB-592349-A (GB)
Title: Modulation system for high frequency currents
IPC: H03C7/02
Filed: 1944-05-01
Abstract: 592,349. Modulating systems. STANDARD TELEPHONES & CABLES, Ltd. May 1, 1944, No. 8202. Convention date, July 4, 1942. [Class 40 (v)] A modulating system comprises a highfrequency source 15 connected to a load 12 by a looped circuit with two branches 16, 18 of equal electrical length, in one of which the lines are'crossed as at 19 with the result that in the balanced condition the load is not energized. A tunable network such as a quarter-wave Lecher pair 20, 21 with an associated tuning reactance 25 is coupled to one branch 16 and when this network is in resonance, the branch is blocked, so that energy passes to the load through the other branch 18. The Lecher pair is preferably constructed as described in Specification 591,765, the increased capacity coupling thus afforded enabling the modulator to be used in cases where the frequency is liable to drift, or is purposely varied or wobbled as in Specification 563,076. Tuning variation may be effected by a notched disc rotating between the open ends of the pair and forming a variable capacity. The branches 16, 18 should each extend for a number of half-wavelengths, and the tuning network 20, 21 should be placed a quarter-wavelength from the feeding end. Specifications 517,935 and 540,871 also are referred to.
Patent GB-452876-A (GB)
Title: Improvements in or relating to speed indicating devices
IPC: G01P1/10
Filed: 1935-03-16
Abstract: 452,876. Speed - indicating devices. BURNETT, L. A., 55, Bassingham Road, Wembley, Middlesex. March 16, 1935, No. 8218. [Class 106 (iii)] A device for giving a warning signal when a vehicle exceeds a predetermined speed is provided with means for quickly connecting it on the one hand to the end of the existing speedometer cable and on the other hand to the speedometer or the gearbox casing. The device comprises a speed-responsive contactclosing device housed in a casing 5 having (a) a crew-threaded portion 6<1> to receive the union nut 8<1> on the end of the speedometer cable 10 and (b) a union nut 8 adapted to screw on to the threaded part 1 of the gearbox casing. Counterpart connections 3, 3<1> are provided at the ends of the spindle 4 of the speed-responsive device 14 which is adapted to close contacts 16, 17 in the circuit of a warning device 24 when the speed limit is reached. The casing 5 may enclose only a drive for the signal-controlling mechanism proper which may be located at a remote point. In place of the centrifugal governor device 14, speedometer mechanism of the periodic-counter type may control the moving contact, and an adjustable tilting mercury switch may be used to close the circuit. The signal may be operated mechanically. Specification 260,072, [Class 106 (iii)], is referred to.
Patent GB-273013-A (GB)
Title: Improvements in or relating to electric lifts and control means therefor
IPC: B66B1/44
Filed: 1926-03-26
Abstract: 273,013. Smith, E. C., and Medway's Safety Lift Co., Ltd. March 26, 1926. Contacts.-A switch lever 12 carries a contact 13 which bridges contacts 19 mounted on pivoted bars 20. Each contact 19 is mounted in the split end 23 of its bar and is secured by a screw 24. Each bar rests on a hollow plunger 26 supported by a spring 27. The normal position of each bar is adjusted by a screw 28.
Patent GB-830830-A (GB)
Title: Improvements in and relating to polyacrylonitrile solutions
Inventor: STARKEY RONALD JAMES
IPC: C08F220/46
Filed: 1957-03-14
Abstract: In a modification of the process described in the parent Specification, acrylonitrile, with or without up to 20% of other copolymerizable compounds such as styrene, methyl acrylate, vinyl acetate or vinyl pyridine, is polymerized in a concentrated aqueous or aqueous/alcoholic solution of an inorganic thiocyanate in the presence of a non-oxidizing catalyst forming free radicals and a polymerization modifier consisting of a compound having one or more sulphonyl hydrazide groups in its molecule.  The modifier is preferably an aryl sulphonyl hydrazide and may be benzene sulphonyl hydrazide or oxy-(bis-benzene sulphonyl hydrazide).  In the examples azo-bis-isobutyronitrile is used as catalyst and 50% aqueous sodium thiocyanate as the polymerization medium to yield polymer solutions ready for spinning directly.  The polymers may be made into threads, fibres, filaments, ribbons or films.