baber/WOPTO huggingface dataset:
Patent GB-1460251-A (GB)
Title: Acrylic synthetic fibre having an animal hair-like feel and its method of manufacture
IPC: D01F6/10
Filed: 1975-02-24
Abstract: 1460251 Fibre compositions KANEGAFUCHI KAGAKU KOGYO KK 24 Feb 1975 [9 March 1974 (2)] 7720/75 Heading B5B [Also in Division C3] Delustred fibres intended to simulate animal hair are obtained by wet-spinning a solution of  a copolymer of acrylonitrile with vinyl chloride and/or vinylidene chloride, the solution also containing 1À0 to 8À0 parts of a cellulose derivative and, dispersed therein 0À1 to 8À0 parts of a metal compound, both parts being based on 100 parts of the copolymer. The copolymer contains more than 30 wt. per cent of the acrylonitrile, less than 10% total of the vinyl and/or vinylidene chlorides and up to 10% of a copolymerizable vinyl derivative, preferably sodium p-styrene sulphonate. The cellulose derivatives specified are the acetate, acetobutyrate and acetopropionate. The metal compounds exemplified are MgO, TiO 2 , ZrO, Zr(OH) 2 , Sb 2 O 3 , SiO 2 , CaO, Al 2 O 3 , basic lead carbonate, dibasic lead phosphite, Mg(OH) 2 , ZnS, CaSO 4 , BaSO 4 , Al 2 PO 4  and Ca 2 (PO 4 ) 3 . The wet-spun fibres may be stretched in an aqueous solution of acetone.
Patent GB-491899-A (GB)
Title: Improvements in and relating to neckties
IPC: A41D25/02
Filed: 1937-03-17
Abstract: 491,899. Neckties. JAMES, G. E. March 17, 1937, Nos. 7768 and 34678. [Class 141] A preformed necktie having a neckband a continuous with two tie end portions b, c is provided with means to prevent the narrow end c from being withdrawn through the knot e such as a tab d sewn on at d<1> or a badge, tassel, &c. secured thereto, or the dimensions of the material or lining at this end may be increased, or the end part made rigid by applying stiffening solution such as starch thereto and the external. edge e<1> of the fold at the rear of the formed knot is secured to the adjacent portions of the knot by stitching .f or other means.
Patent GB-1083766-A (GB)
Title: Multilamp photoflash package
Inventor: KOTTLER FRANKLIN DELANO
IPC: G03B15/04
Filed: 1966-02-22
Abstract: 1,083,766. Multi-flash lamp. SYLVANIA ELECTRIC PRODUCTS Inc. Feb. 22, 1966 No.7805/66. Headings G2A and G2L. A multi-flash lamp unit (e.g. a flash cube as shown in Fig. 2) has a base 16 on which are permantly mounted a plurality of flash-bulbs 15, their associated reflectors (17), stirrup-shaped electrical leads 19, 20, and a centre-post 23 having a plurality of lugs 24 with ramped surfaces (29), (30) for releasable engagement with a spring (26) in the camera, whereby each bulb may be retained in an operative position in turn.
Patent GB-884720-A (GB)
Title: Coin-controlled apparatus
IPC: H04M17/02
Filed: 1960-03-04
Abstract: 884,720. Locating conductive bodies. FISHER, L. J. March 4, 1960, No. 7856/60. Class 37. [Also in Groups XVIII and XXXIX] In apparatus for signalling the values of coins deposited in the shoot of a telephone call-box, the shoot 6 has electromagnets 1 to 4 arranged along one side thereof, which are energized by the alternating voltage source 5 so as to induce voltages into pick-up coils 12 wound on cores 8 to 11 mounted opposite the respective electromagnets. The coils 12 on cores 8, 9 are connected in series opposition with those on cores 10, 11 so that normally no voltage is applied to the pulse generator 15. Coins of different values are inserted at different points in the shoot 6 via slots (not shown), such that a coin passes different numbers of electromagnets 1 to 4 in accordance with its value. As a coin, which may be metallic or non-metallic, passes an electromagnet the resulting change in the voltage induced in the corresponding pick-up coil gives rise to a voltage at the input of generator 15, so that a number of pulses is generated which corresponds to the value of the coin. Each electromagnet and each pick-up coil may be replaced by an electrode, each such pair of electrodes forming a condenser. Embodiment using transistors, Fig. 4.-The four coils g1 to g4 of electromagnets 1 to 4 are connected in series in the collector circuit of transistor T1 together with the tuning condenser C1, and associated feed-back coils g<SP>1</SP> 1  to g<SP>1</SP> 4  are connected in the base circuit. When battery is connected to this oscillator by the telephone subscriber taking down his handset, it oscillates at a high audio frequency. The pick-up coils are connected at m1, m2, m3, m4 in the base-emitter circuit of transistor T2 and in the normal condition produce no output. When a coin passes down the shoot, each pulse of alternating voltage produced in the baseemitter circuit of T2 causes that transistor to conduct. The resulting potential drop in R3 causes T3 to conduct also, so that the leg L2 of the telephone line receives one or more ground pulses in dependence upon the value of the coin.
Patent GB-1084611-A (GB)
Title: Methods and apparatus for charging batteries
IPC: H02J7/00
Filed: 1965-02-23
Abstract: 1,084,611. Automatic voltage control. D. E. BAWDEN. Feb. 23, 1965, No. 7856/65. Heading G3R. [Also in Division H2] A charging arrangement for a battery comprises the step of sensing the electro-chemical voltage of the battery during periods when the charging current is zero and using the signal so obtained to predetermine the subsequent magnitude if charging current. In the circuit shown in Fig. 2 the periods of zero charging current occur when the voltage of battery 20 is greater than the fullwave rectified charging voltage supplied by a transformer/rectifier system 10, 19, and the magnitude of the battery voltage determines whether or not a silicon controlled rectifier 37 is fired, this rectifier controlling the current flow in the D. C. winding 25 of a saturable reactor 24 which controls the primary winding 11 of transformer 10 and hence the charging current. Firing of rectifier 37 is caused by conduction of a uni-junction transistor 41 which conduction is determined by applying at its emitter 44 the battery voltage (via potentiometer network P2, R6 and resistor R7) and the voltages across capacitors C2, C3 obtained from a Zener diode 40 through a potentiometer P1. The control circuit is inoperative while charging current flows and will regulate the battery voltage to a value determined by the setting of potentiometer P2. The theoretical aspects of circuit operation and the setting of potentiometers P1, P2 are discussed, Figs.3 to 6 (not shown). In another embodiment Fig. 1 (not shown) the saturable reactor is omitted and the control circuit is replaced by a resistor R2 and relay coil 21 series connected across the battery 20 and respectively in parallel with a diode 22 and a capacitor C1, the latter attaining the battery voltage at intervals of zero charging current to cause opening or closing of the relay contacts 23 which are in parallel with a resistor R1 in series with the battery 20.
Patent GB-931226-A (GB)
Title: Improvements in or relating to timing devices
IPC: G05G21/00
Filed: 1960-03-04
Abstract: 931,226. Time switches. G. I. FREDHOLM. March 4, 1960 [March 5, 1959], No. 7858/60. Class 38 (5). [Also in Groups XVIII, XX, XXIV and XXXVIII] A timing device comprises one main conveyer and at least one auxiliary conveyer, and conveyers being arranged to run at different constant speeds side by side, the main conveyer being arranged to run at a higher speed than the auxiliary conveyer, means for driving said auxiliary conveyer at a predetermined speed, means for placing a signal mark or body on the auxiliary conveyer, means for transferring said mark or body to the main conveyer after a given time period, and electric switch actuating means, stationary with respect to the conveyers, arranged in the path followed by said mark or body after its transfer to the main conveyer, this stationary electric switch actuating means being adapted to be influenced by said mark or body. In one embodiment, Figs. 3 and 4, three coaxial discs 21, 22, 23 having elastically deformable peripheries rotate within a ring 24 and so define a ball roller track 25. The ring 24 has two channel recesses 28, 29 containing balls 26 each of a diameter slightly greater than the depth of the track 25. The recesses 28, 29 having inlets 30 from the track 25 and outlets 31 to the track 25, the outlets being controlled by detents which permit one ball at a time to enter the track 25. As the discs 21, 23 rotate at different speeds the two balls in the track 25 separate by a distance corresponding to the desired interval and when two half-ring members 36, 37 are moved from opposite sides into the path 25 the two balls are moved to engage the central ring 22. The balls then remain separated by the said distance and successively actuate contact members 40, 41. Each contact member 40, 41 actuates a switch 55, Fig. 5, to energize an electromagnet 56 to withdraw a latch bolt 58 from a notch 60 in a disc 61 and to close a switch 50. The closure of switch 50 causes energization of an electromagnet 52 which effects engagement of a friction clutch 63 whereby the disc 6 is rotated for half a revolution when the latch bolt 58 enters a second notch 60. A cam 65 rotates with the disc 61 and operates a reciprocating member 67, e.g. a folding arm of a material folding mechanism associated with a mangle. The switch 45 is closed at the beginning of the measuring period to energize an electromagnet 47 which actuates a linkage and cam mechanism to move the half-ring member 36, 37 to their outer position and to operate the ball controlling detents 33. In another similar example the drive to the three discs and the linkage and cam mechanism is illustrated.
Patent GB-935321-A (GB)
Title: Process for the manufacture of o-acylated leuco vat dyestuffs
IPC: C09B9/02
Filed: 1962-02-28
Abstract: Water-soluble O-acylated leuco vat dyestuffs are made by reacting a salt of a sulphuric acid ester of a leuco vat dyestuff at a raised temperature in a pyridine base with a sulphobenzoic acid halide. Pyridine bases specified are pyridine, picolines and collidines and sulphobenzoic acid halides mentioned are the chlorides of o-, m-and p-sulphobenzoic acid and of 3:5-disulphobenzoic acid.  Examples are given.  The esters dye and print cellulose materials.  Specification 898,991 is referred to.
Patent GB-1390061-A (GB)
Title: Preparation of porous cellulose articles
IPC: C08J9/26
Filed: 1972-02-21
Abstract: 1390061 Inducing reaction by microwaves MAGYAR VISCOSAGYAR 21 Feb 1972 7928/72 Heading B1X [Also in Division C3] An apparatus used for making porous cellulose from solutions of cellulose derivatives (see Division C3) comprises a hollow resonator 1, serving as a coagulation and/or regeneration chamber, which is turned to a frequency appropriate to heat water. The resonator is connected via lead 2 to a magnetron 3 having a cooler 4 and a single phase half-wave rectifier 5, which is connected to power control unit 6 which is controlled by a characteristic former 8 and microwave detector 7 which together monitor a parameter Q, which is related to the amount of energy stored in and lost from the resonator, and which convert the signal into a form suitable for operating control 6. A feeder 10 supplies the resonator with material on a sieve 12 passing through the resonator and a pair of band filters 9. Exhaust unit 11 is also connected to the resonator.
Patent GB-708713-A (GB)
Title: Improved anti-dazzle filters for headlights of automobiles, and a process for the manufacture of such anti-dazzle filters
IPC: F21V5/00
Filed: 1950-03-30
Abstract: 708,713. Anti-dazzle devices for vehicle lamps. SCHENK, K. March 30, 1950 [March 30, 1949], No. 8005/50. Classes 75 (2) and 75 (4) An anti-dazzle filter for a vehicle lamp comprises a transparent plate a having on one side a grid screen comprising light permeable areas b of parallel sided strip form separated by opaque areas c of similar form, and on the other side a lens screen d having convex lens elements each aligned with an adjacent pair of areas b, c, the focal points of the lens elements on the grid screen side lying within the thickness of said grid screen. As illustrated the areas b, c are of the same size and the filter is arranged so that a parallel lamp beam is incident on the grid screen and the beam transmitted through a single lens element is spread downwardly through an angle I, the light which would otherwise be spread upwardly through an angle II being intercepted by an opaque area c. A second lens screen d<SP>1</SP> and its support a<SP>1</SP> may be provided at the light entrance side of the screen b, a. In manufacturing the filter the support a and lens screen d may be formed homogeneously by embossing the lens screen d upon a sheet of glass or celluloid. A light sensitive layer, e.g. a chromate layer is provided on the opposite side of the support a, and is exposed through the lens screen d to substantially parallel light beams from a source of light, e.g. a luminous gas tube which by means of a condenser lens system provides converging beams each having a direction and an aperture angle corresponding to that of the light beam I to be transmitted through a lens element of the screen d. The areas of the light sensitive layer which are acted upon by the light beams become hardened and remain light permeable to form the areas b. The light sensitive material is removed from the remaining areas c of said layer by a developing operation and the areas are then rendered opaque by staining with a dye.
Patent GB-976703-A (GB)
Title: Polymerization of propylene oxide
IPC: C08G65/12
Filed: 1961-03-07
Abstract: Propylene oxide is polymerized in a solvent-free system using a catalyst formed from zinc dialkyl and water in a molar ratio of 0.5:1 to 1:1. Co- and ter-polymers of propylene oxide may also be formed. Specified comonomers are butadiene monoxide, styrene oxide, cyclopentadiene monoxide, vinyl cyclohexene diepoxide, dicyclopentadiene diepoxide, allyl glycidyl ether and crotyl glycidyl ether. The comonomers may be present in proportions up to 10% by weight based on the propylene oxide.  The catalyst which may be zinc diethyl is present from 0.1 to 1% by weight.  The polymerization is preferably carried out in the presence of oxygen or air. The polymerization may be effected in the presence of fillers, such as carbon black and silica or extruder oils, such as aromatic oils. The polymers obtained may be cured in conventional manner per se or with other elastomers, e.g. butyl rubber.  The examples describe the preparation of: (1) and (3) copolymer of propylene oxide and vinyl cyclohexene diepoxide in the presence of zinc diethyl and water; (2) terpolymer of propylene oxide, styrene oxide, and allyl glycidyl ether; (4) copolymer of propylene oxide, allyl glycidyl ether in the presence of carbon black.
Patent GB-558782-A (GB)
Title: Improvements in or relating to plywood
IPC: E04C2/26
Filed: 1942-06-15
Abstract: 558,782. Plywood. FIDDES, J. June 15, 1942, No. 8192. [Class 145 (ii)] Relates to plywood of the kind comprising layers 1, 2 of thin narrow boards with an interlayer 3 of thin metal or other waterproof material, the layers being secured together by stapling, nailing, or like means. According to the invention, the interlayer 3 extends beyond the sides and edges of the layers 1, 2 so that the projecting ends may be used to form a flexible connecting link when making packing cases or crates. Preferably the interlayer consists of sheet iron which may be coated with suitable material to render it rustproof. Specifications 553,687 and 557,170, [Group XVII], are referred to.
Patent GB-567891-A (GB)
Title: A new or improved cultivating device
IPC: A01B39/26
Filed: 1943-05-24
Abstract: 567,891. Hoeing-machines. DAWSON, H., and HATTON, T. May 24, 1943, No. 8201. [Class 6 (i)] A cultivator for hoeing between the rows of small growing crops without covering them with soil, comprises frame members 1, 2 which carry handle-bars 3, 4 and rubber-tyred front wheels 8 to straddle a row of plants. Adjustable in a transverse slot formed. by frame-bars 9, 10 are arms 12 each carrying a rotary dished disc 14 and a depending hoe 17 acting closely on the outside of the disc. Adjustment of the arms 12 by loosening bolts 11 enables the inclination and spacing of the tools to be varied.
Patent GB-471982-A (GB)
Title: Improvements in variably coupled tuned circuits for use, for example, in superheterodyne wireless receivers
IPC: H03H7/01
Filed: 1936-03-19
Abstract: 471,982. Transformers. HAZELTINE CORPORATION. March 19, 1936, No. 8268. Convention date, April 22, 1935. [Class 38 (ii)] [Also in Group XL] An adjustable auxiliary coupling between a pair of circuits forming a band-pass filter is provided by a device resembling a variometer and constructed as shown in the Figure. Design details are given.
Patent GB-470654-A (GB)
Title: Improvements relating to telegraph signalling apparatus
IPC: H04L25/24
Filed: 1936-03-19
Abstract: 470,654. Code telegraphy; valve relaying circuits. CABLE & WIRELESS, Ltd., and HUMBY, A. M. March 19, 1936, No. 8282. [Classes 40 (iii) and 40 (v)] A regenerative telegraph repeater comprises a " flip-flop " system, having two positions of equilibrium corresponding respectively to the transmission of outgoing marking and spacing signals and consisting of two thermionic valves each having its anode connected to the grid of the other, the system being placed under the control of the incoming signals only for a fraction of each signal at which the marking or spacing condition is definite by a relay device controlled periodically at a frequency corresponding to the shortest marking or spacing condition. As shown, the " flip-flop " system consists of two valves 1, 2 each having its anode connected through a resistance to the grid of the other, the cathodes being kept at a positive potential by connection to a resistance 3, and the grids being connected to ground through grid-leak resistances 6, 7. The relay device consists of a valve 22 of which the grid is connected to a multi-vibrator circuit comprising valves 10, 11, each having its grid connected to the anode of the other through a condenser and there being separate and common resistances in the anode and grid circuits. At such times as the valve is conducting it connects the grid of one or other of the valves 1, 2 to ground so that the valve if operative ceases to pass current, the other valve becomes operative, and the corresponding winding of relay 8 is energized. Suitable values are given for the various resistances, in the circuit: The frequency of the multi-vibrator circuit is synchronized with the signals by a connection through a variable condenser 28. The relay valve 22 may be replaced by an electromagnetic relay controlled over a single winding or, if polarized, over two windings by the multivibrator.
Patent GB-576759-A (GB)
Title: Device for securing electric wire
IPC: F16L3/223
Filed: 1944-05-03
Abstract: 576,759. Pneumatic - sucker fasteners. BINNIE, K. S. May 3, 1944, No. 8330. [Class 44] A support for electric wires comprises a rubber suction disc 1 having an opening to receive the wires formed by integral rubber lugs 2 having inwardly turned flanges 3. One suction disc may carry a number of openings. A modification is shown comprising a strip of rubber having a plurality of openings mounted on a suction disc at each end.
Patent GB-556197-A (GB)
Title: A process for the manufacture of metal agglomerates and articles made therefrom
IPC: C22C32/00
Filed: 1942-06-19
Abstract: 556,197. Extracting lead; powder metallurgy. BERK & CO., Ltd., F. W., and JONES, H. W. June 19, 1942, Nos. 8401 and 8402. [Class 82 (i)] [Also in Groups V and XXII] Lead acetate, tartrate, formate, oleate, stearate, or other organic lead salt is decomposed by heating in a non-oxidizing atmosphere, e.g. at 400 to 500 C. The residue which is a powder comprising lead with about 1 per cent. of carbon, may be mixed with powdered copper, iron, aluminium, silver, or other metal not substantially alloying with lead, and sintered, e.g. to form bearings, the porosity of which may be controlled as by mixing a volatile lubricant with the powder, and the sintered powder impregnated with graphite, molybdenum sulphide, or other lubricant. Small quantities of nickel, cobalt, tungsten, molybdenum, vanadium, titanium, tantalum, antimony, arsenic, boron, cerium, manganese, tin, zinc, or alloys may also be added to the powder. Abrasives such as carborundum, diamonds, aluminium oxide or ferric oxide may be incorporated. In an example, a lead-copper powder is pressed at 20 tons per sq. in. to the shape of a bearing and sintered by heating at 850 C. for 20 minutes in hydrogen.
Patent GB-526449-A (GB)
Title: Improvements in apparatus for the separating of divided mineral ores
IPC: B03B5/04
Filed: 1939-03-16
Abstract: 526,449. Concentrating ores. DAVIES, A. March 16, 1939, No. 8427. [Class 82 (ii)] An ore-concentrating table 40 mounted on flexible supports 22 is reciprocated by means of a cam 10 bearing on a roller 18 mounted on uprights 16 which are adjustably connected by means of rods 27 to the supports 22. The uprights 16 are mounted on flexible members 12, 14 secured to the base frame 1. The table has the usual riffles, distributing box 46, launder 55, and water supplies 47, 48, and its inclination is adjustable longitudinally at 4 and transversely at 42.
Patent GB-107227-A (GB)
Title: Improvements in Apparatus for use in Making Ammunition Pellets.
Inventor: WILLIAMS HENRY
IPC: F42B33/02
Filed: 1916-06-16
Abstract: 107,227. Williams, H. June 16, 1916. Moving-chamber apparatus for granular materials.-A measuring-appliance employed in the moulding of pellets of tetryl is furnished with a socket 9 adapted to fit over a mould 1 and a projection 14 adapted to engage with a conical recess 15 in the mould, and comprises a hopper 10 and a rotary measuring- valve 17 furnished with measuring-chambers 18, 19.