baber/WOPTO huggingface dataset:
Patent GB-798680-A (GB)
Title: Improvements in or relating to the preparation of pharmaceutical compositions
IPC: C07C233/46
Filed: 1957-03-14
Abstract: The invention comprises salts of a -acetylaminoisocaproic acid and monoethanolamine, piperazine and N-methylglucamine, the preparation of which is described in Examples VI to XI.  In Example VII double decomposition in aqueous solution (piperazine sulphate and barium a -acetylaminoisocaproate) is followed by concentration of the solution to produce crystallization.  In the other examples the acid is added to a solution of the base in water.  The salts are anti-vertigo agents.ALSO:A pharmaceutical composition of utility in combating vertigo comprises at least one compound containing an a -acetylaminoisocaproic anion in a sterile diluent medium. Specified compounds are a -acetylaminoisocaproic acid, the alkali metal (preferably sodium) salts of the acid, and the salts obtained by combining the acid with monoethanolamine, piperazine, morpholine and N-methylglucamine.  The compound may be racemic or optically active and its concentration in the composition, calculated as acid, should be at least 1 per cent and preferably 5 to 25 per cent by weight.
Patent GB-147413-A (GB)
Title: Improvements in work boxes for domestic use
IPC: D05B91/00
Filed: 1920-03-23
Abstract: 147,413. Kelsall, R. March 23, 1920. Addition to 132,741. Work-boxes; work-baskets.-The sides 2, 3, Fig. 1, of the chest of drawers described in the parent Specification, and the vertical board 1 extend through the platform d, and are each provided with a pair of transverse slots engaged by longitudinal laths e beneath the platform to secure the whole together. The sides 2, 3 are also secured beneath the platform by angle-plates f. The top j, Figs. 5 and 6, of the cover i is removable and may be fixed at the bottom of the cover so that it can be used as a work-basket having the pair of loosely pivoted handles k.
Patent GB-1382673-A (GB)
Title: Grinding apparatus
IPC: D21D1/30
Filed: 1972-02-24
Abstract: 1382673 Disc mills R B REINHALL 24 Feb 1972 [16 March 1971] 8636/72 Heading B2A A disc mill comprises a pair of discs at least one of which is rotatable, 14 (as described) and cooperates with a fixed disc which is formed with a duct or ducts through which water is supplied to the grinding space via one or more openings on its grinding surface. As described the fixed disc comprises three screw adjustaible annular holders 22-24 supporting refining plates 26-28. Water is supplied via valves 56, pipes 54, 55 and axial channels 58 opening into a channel 60 from which extend channels 62 to a further channel 64 in two of the holder members. Water is thus distributed around the circumference of the disc and flows via gaps 66 into the spaces 32, 33 between discs. The spacing of the discs is adjusted by an arrangement of gearing 46, 44 and handwheels 50.
Patent GB-256293-A (GB)
Title: Improvements in or relating to devices for supporting curtains and the like
IPC: A47H15/02
Filed: 1925-04-01
Abstract: 256,293. Hopkins & Son, Ltd., W., Hopkins, C. J., and Kopkins, W. C. April 1, 1925. Brockets, securing; curtains, suspending.- A supporting bracket for a hollow curtain rail a comprises a T- shaped projection the head of which is located within the rail. In the construction shown each bracket comprises a stem i carried by an attachment plate and screw threaded to receive a plate h within the rail. A valance support, comprising a bracket arm e with a slotted lower end to pass over one fixing screw k of the main bracket may be provided. The slot is enlarged at its lower end to embrace a boss o on the attachment plate j. The rail a may be oval in section with the major axis arranged vertically.
Patent GB-1481297-A (GB)
Title: Electromagnet
IPC: H01F7/16
Filed: 1976-03-04
Abstract: 1481297 Electromagnets PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 4 March 1976 [7 March 1975] 08691/76 Heading H1P An electromagnet for a matrix printer (Fig. 1) comprises two hollow cylindrical poleshoes 1, 3 coaxially aligned and of magnetizable material separated by an intermediate non-magnetic coaxial ring 5 of e.g. brass, all held in fixed spatial relationship by a cylindrical thermoplastic cylindrical connecting member 7 together with an excitation coil 9 on the member 7 as a former. Cylindrical armature 11 is slidable within the poleshoes for downward displacement on energization against restoring spring 13. A non-magnetic support of the armature comprises a cylindrical central portion 17 between flanges 19, 21 with magnetic cylinder 23 carried by the annulus; the flanges serving as guides within the poleshoes. On de-energization the armature is biased by spring 13 against cylindrical abutment 25 and recording pin 27 is carried by, e.g. brass holder 29 of the armature. Flange 21 has a dependent flexible skirt 31 into which holder 29 is snapped. Circumferential grooves 35, 37 of poleshoes 1, 3 anchor member 7 of e.g. GRP which is moulded in position the coil being moulded in or subsequently wound. PTFE or polyisomerates may be used for the armature support which is longitudinally grooved to collect extraneous particles. The entire armature may be of magnetizable material.
Patent GB-566802-A (GB)
Title: Improvements in shuttles for looms for weaving
IPC: D03J5/24
Filed: 1943-06-01
Abstract: 566,802. Loom shuttles. DAWSON (BLACKBURN), Ltd., T., and DAWSON, J. June 1, 1943, No. 8738. [Class 142 (iii)] In a loom shuttle having a vertical and substantially longitudinal slit b provided in the head A, and a transverse passage c extending from the side of the head to the vertical slit so that the weft y can be pulled into the slit and withdrawn through the passage and shuttle eye D by a hook, the vertical slit b extends from the cavity of the shuttle to a point near the tip, its depth at the recess being such that it extends below the axial centre line of the peg A<1>, and the passage c extends beyond the slit and is enlarged in an upward direction to permit the weft withdrawing hook to be inserted below the weft in the slit and to be tilted so that upon withdrawal its hook end engages' the weft. A horizontal slot g extends from the passage c and from the side of the shuttle head to the recess to prevent threading of the shuttle by kissing. A tuft f of wool is arranged to project from a narrow passage in the shuttle head to prevent the weft from ballooning 'up the slit. The eye D may be formed from metal wire bent to form a circular part and two projecting legs which are driven into holes provided in the passage c.
Patent GB-1491348-A (GB)
Title: Touch or proximity actuated electronic switch
IPC: H03K17/955
Filed: 1975-03-03
Abstract: 1491348 Proximity and touch responsive switches MAGIC DOT Inc 3 March 1975 8744/75 Heading G1N [Also in Division G4] A touch or proximity actuated electronic switch includes a two input logic circuit to at least one of which inputs a touch plate is connected. Logic circuit 14 in the form of an exclusive OR gate, Fig. 3 (not shown), has its inputs 21, 23 connected via resistive network 15 and twisted lead pair 28, 30 to touch plates 12, 13. A balanced common mode alternating voltage from 20, 22 is applied to the balancing network 62, 64 so that the inputs 21, 23 receive inputs substantially balanced in phase and amplitude. In this condition a 'O' output is obtained at 140 from the gate and no voltage appears across integrating capacitor 16 so that no input is applied to amplifier circuit 18 and the impedance between terminal 204 and ground 84 is open circuit with the switch in its OFF position. If now either one of the touch plates 12, 13 is approached or touched by an operator's hand the operator's body provides a capacitance between e.g. touch surface 12 and ground 46 and if earth ground 46 is connected to circuit ground 84, the phase angle of the alternating voltage signal applied to input 23 from 20 is caused to lag the phase of the alternating voltage signal applied to input 21. Thus during each cycle of the alternating voltage the difference between the voltages applied to inputs 21, 23 will differ by an amount exceeding the threshold voltage of the exclusive OR circuit 14 and an output will be thus provided in the form of a series of pulses of a width indicating the time during which the threshold was exceeded. Capacitor 16 is thus charged to provide a current input to amplifier 18 to cause the transistors therein to become conductive such that the impedance across 204 and 84 changes to a low value and the switch is in its ON state. The sensitivity of the switch is determined by appropriate choice of resistors 62, 64, alternating voltage, and resistor 65 which provides fine tuning. The resistors 62, 64, 65 may be replaced by capacitors, Fig. 2 (not shown). The switch may also be arranged to be normally unbalanced and balanced by touching one of the touch plates. The output of the switch may be encoded and a plurality of switches mounted on a keyboard.
Patent GB-412716-A (GB)
Title: Plate clutches
IPC: F16D13/64
Filed: 1933-03-23
Abstract: 412,716. Friction clutches. HEARD, P., Osgathorpe Cottage, Pitsmoor, Sheffield. March 23, 1933, Nos. 8762 and 12743. Divided on 412,763. [Class 80 (ii).] In a clutch comprising a driven plate adapted to be clamped between a driving member 23 and a presser plate 18, the driven plate comprises a flexible metal spider, the whole of the outer portion of which, from near the inner ends of the spokes 13, is initially dished relatively to the presser plate so as to be concave towards the latter. The centre ring portion 12 of the spider is secured to a hub 17 splined on the driven shaft 19, and the outer ring portion 14 has slits 15 between the spokes to form arcuate portions 16. Friction annuli 26, 27 are secured on the opposite sides of the portion 14 by rivets 25 at the centre of the portions 16. The annulus 26 next to the presser plate has radial slits 28 extending from its inner periphery over a material portion of its width, while the annulus 27 may have similar slits extending from its outer periphery, the slits in both annuli registering with one another and with the slits 15. The annuli may be secured in such a way as to permit relative radial movement between the annuli and the spider, as described in Specification 412,763.
Patent GB-150647-A (GB)
Title: Improvements in hat creaser retaining device
IPC: A42B1/00
Filed: 1920-03-26
Abstract: 150,647. Reichard, B. March 26, 1920.. Springs and stiffeners.-A device for retaining the crease at the top of a felt or like hat consists of a single piece of non-metallic resilient material, such as transparent celluloid, folded at c, so as to form two opposing spring sides c<1>, shaped as shown in Fig. 2. The device is applied to the hat, as shown in Fig. 1.
Patent GB-551339-A (GB)
Title: Applying protective coatings to surfaces
IPC: C08K5/43
Filed: 1941-07-16
Abstract: 551,339. Coating surfaces. FLINT, C. F., TAYLOR, H., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 16, 1941, No. 8974. [Class 95] Surfaces are coated by projecting or spraying solid polythene, in powder form, through a flame gun on to the surfaces to be coated. Pigments may be incorporated with the solid polythene powder. Specification 538,203 is referred to.
Patent GB-453711-A (GB)
Title: Improvements in or relating to feeding portable power driven drilling and like machines
IPC: B23Q5/32
Filed: 1935-03-22
Abstract: 453,711. Portable drilling-machines. ARMSTRONG, WHITWORTH, & CO. (ENGINEERS), Ltd., SIR W. G., and REAVELY, T. C., Scotswood Works, Newcastle-on-Tyne. March 22, 1935, No. 9046. [Class 83 (iii)] In a portable drilling or like machine provided with a screw-and-nut feed and gearing adapted to rotate the screw and nut at slightly different speeds, a part of the reduction gear is arranged to turn and means are provided for holding or releasing at will the said part whereby the operator may control the feed of the tool while the machine is in motion. The drilling spindle 1 is directly connected by dogs 2a to the internally screwed sleeve 2 which engages with the feed screw 3. A ratchet disc integral with the sleeve, drives a gear wheel 5 in the direction of motion indicated by the arrow 17, pinions 7, 8 keyed to a lay shaft 9, supported by a rotatable drum 13, transmit the drive to a member 11 which is slidably keyed to the feed screw 3, through a further ratchet mechanism 12 which is arranged to slip with the drive in the direction referred to above. A brake band 14 on the drum is operated to prevent rotation of the drum during the normal feed of the drill &c. which is at a slow rate according to the difference in ratio between the pinions 7, 8 and their driving wheels. The ratchet mechanism serves to hold the feed screw 3 stationary during reverse rotation of the spindle and thus provides a quick return. Release of the brake band allows the whole feed gearing to revolve as a unit and stops the feed. In a modification of the feed gearing an epicyclic gear train is used, Fig. 3 (not shown), the sun wheel of which is integral with the screwed sleeve, the planet wheels being carried by a spider slidably keyed to the feed screw and crown wheel is provided with a hand brake to start or stop the feed, a further hand brake on a rim carried by the spider enables a quick return to be made when the first brake is released.
Patent GB-968211-A (GB)
Title: Improvements in and relating to electrical circuit making and breaking devices
Inventor: GRANBY JOSHUA
IPC: H01H47/00
Filed: 1961-03-13
Abstract: 968,211. Retractive switches. GRANLEY PRODUCTS (LONDON) Ltd. March 12, 1962 [March 13, 1961; June 20, 1961; July 4, 1961], Nos. 9117/61, 22340/61 and 24153/61. Heading H2B. [Also in Divisions B5, G4 and H3] A pad or mat switch is in the form of a laminate (see Division B5) comprising conductive layers 1, 2, and at least one intermediate resiliently compressible insulating layer 4 having perforations 5 such that layers 1, 2 contact one another when pressure is exerted on the mat. Layers 1, 2 are each bonded to a layer of insulating material 3, or alternatively the sheet material 3 has a metallized layer 1 or 2, and the laminate has a sealed envelope 12 of thermoplastic material with eyelets 13a in the sealed margins 12a to facilitate fixing of the mat. The base of a transistor 16 (see Division H3) is connected through metal terminal 6<SP>1</SP> to layer 1 and through a resistance 17 via line 20 to a battery. The other layer 2 is connected through strip metal terminal 7<SP>1</SP> by line 23 to the battery and to the emitter of the transistor, the collector being connected via line 25a to a relay which when energized holds open contacts in e.g. an alarm circuit (see Division G4). Transistor 16 and resistance 17 are encased in a disc moulding 29 and are included in the cornerof the mat switch. When layers 1, 2 contact one another transistor 16 is short-circuited, the relay is deenergized and a circuit is made, e.g. for an alarm. A relay may be used instead of the transistor device. Three mats in series may be used (Fig. 3, not shown). Layers 1, 2 may be perforated metal foil, whole metal sheets or several metal strips. Insulating layer 4 may be one sheet or several separate strips, and may have a thin fabric layer adhesively secured thereto.
Patent GB-1464860-A (GB)
Title: Thermoplastic compositions
IPC: C08L21/00
Filed: 1973-02-24
Abstract: 1464860 Thermoplastic compositions D W SEAR 13 Feb 1974 [24 Feb 1973 16 April 1973 21 May 1973(2) 22 June 1973] 9163/73 18182/73 24104/73 24105/73 and 29684/73 Headings C3P and C3Q  A thermoplastic composition comprises pieces of a non-thermoplastic rubber material bonded together by a thermoplastic resin binder, there being at least 50% by weight of the rubber material and at least 5% of the resin present in the composition and the binder and the rubber of the rubber material having solubility parameters which lie within one unit of one another when measured using the same type of solvent. Scrap rubber and scrap resin can be bonded together. In the examples mouldings are made from compositions in which whole tyre rubber crumb consisting of natural rubber and styrene butadiene rubber is bonded with an ethylenevinyl acetate copolymer alone or mixed with polyethylene or for comparison with a polyester or polyethylene alone; natural rubber from playball buffings is bonded with a styrenebutadiene block copolymer or for comparison with an ethylene-vinyl acetate copolymer; butadiene-acrylonitrile rubber is bonded with a polyester or an ABS resin or for comparison with an ethylene-vinyl acetate copolymer or polyethylene; or ethylene-propylene diene rubber is bonded with polyethylene and in some cases the composition also contains coumarone indene resin, naphthenic plasticizer and/or clay or silicate fillers.
Patent GB-739863-A (GB)
Title: Improvements in gate valves
IPC: F16K15/18
Filed: 1954-03-30
Abstract: 739,863. Gate valves. AINSWORTH & SONS (PROPRIETARY), W. Ltd. March 30, 1954 [April 28, 1953], No. 9258/54. Class 135. In a valve comprising a valve gate 4 formed by telescopic cylindrical parts 8, 9 having seating rings 14 engageable with annular seats 6 mounted in the valve body 1, excessive pressure on the upstream side of the gate when closed is relieved by a non- return valve 15 controlling a port 11 through the gate part 8. The valve 15 is loaded by a spring 20 which also urges the parts 8, 9 against the plate 6. In a system wherein a common pressure fluid generator, e.g. a steam boiler, supplies several units, a valve according to the invention is fitted in the supply line to each unit, so that on all the gates being closed any over-pressure in the system is distributed equally between all the units.
Patent GB-536755-A (GB)
Title: Improvements in electric lamp making machines
IPC: H01J9/40
Filed: 1940-05-27
Abstract: 536,755. Sealing gas filled electric lamps and discharge devices. BRITISH THOMSONHOUSTON CO., Ltd. May 27, 1940, No. 9275. Convention date, May 26, 1939. [Class 39 (ii)] [Also in Group XXIII] A turret machine for exhausting, gas filling, above atmospheric pressure, and sealing envelopes having vitreous exhaust tubes, has a number of heads each of which comprises an exhausting and gas filling port and mechanical means to pinch and seal the tube. Current is supplied to the pinching means to heat part of the tube during a portion of the rotation of the turret. The pinching means are actuated to seal the tube whilst hot and disengaged therefrom after subsequent cooling. At station A, a lamp 10 is inserted in a holder with its stem in the exhaust port. The holder 27 is secured to an arm 28 which at station is depressed against a spring 32 by a fixed roller 36 engaging a stud 35 and an arm 42 is rotated to compress a rubber seal 45 about the exhaust tube 19 which, with the lamp, is now in its lowest position. The turret carries round the upper portion 46 of a valve which, at station B, admits vacuum to the exhaust port and in subsequent stations flushes the lamp with nitrogen and repeats these processes finally flushing with argon, exhausting and filling with argon, preferably above atmospheric pressure. Between stations B and C tipping jaws 21, 22 are permitted to close upon the exhaust tube, a spring 72 maintaining the pressure. Each jaw comprises a thin ribbon of metal, such as nickel-chromium alloy, backed by a lava block 107 and secured to fingers mounted on an insulating block 67 pivoted at 68 on one of a pair of arms 69, 70 which may be separated by toggle linkage against the action of the spring 72. A fixed commutator 82 cooperates with brushes carried around by the turret to supply current at station C to a transformer 96, the primary circuit comprising a switch 99 and a rheostat 95 and the secondary circuit the jaws 21, 22. Heating proceeds until, at station F, the tube has softened and the jaws under the spring pressure have made the seal. Current is cut off by switch 99 actuated by a plunger with which a bolt on the arm 70 engages as the jaws close. At the same time the lamp and its support rise, the jaws rocking about the pivot to improve the seal, and reduce to a thin neck a lower portion of the exhaust tube. At station G the commutator disconnects the transformer and cooling takes place. At station H the exhaust port is opened by the arm 108. In moving to station J a cam causes the tipping jaws to open and the lamp is removed by hand.
Patent GB-1498298-A (GB)
Title: Method of making outer blades or foils for electric shavers
IPC: C25F3/02
Filed: 1975-03-06
Abstract: 1498298 Making dry shaver foils; stamping MATSUSHITA ELECTRIC WORKS Ltd 6 March 1975 [11 March 1974] 9331/75 Headings B3A and B3Q A method of making an electric shaver outer foil having hair inlet holes with a smooth hair inlet part at the periphery of each hole, comprises plastically deforming a metal lamina between a soft die material and a die having convexities or concavities smoothly merging with the main surface of the die, and grinding the deformations to form the holes. Fig. 4A shows a die having protrusions 12 extending from surface 13, and merging therewith by rounded shoulder portions 14. In a press, the die is overlaid by the lamina B1 and a rubber layer C, Fig. 4C, which is then subjected to pressure to dimple the lamina. The flat tops of the dimples so formed are removed by grinding to produce the foil B3, Fig. 4E. In one embodiment, the foil is ground by a metal bonded diamond hone using an electrolytic current of 140 to 200 amps to 10 to 14 volts, followed by mechanical grinding. The lamina may be flat or part-spherical.
Patent GB-101686-A (GB)
Title: Lawn Rollers.
Inventor: DUNHAM RAY ERNEST
IPC: A01B29/02
Filed: 1916-07-03
Abstract: 101,686. Dunham, R. E. July 3, 1916. Rollers, land.- A roller in which water or sand is used as ballast comprises a cylindrical shell 1 and heads 2 formed with central openings 3, through which a central tube 4 passes, the ends of the tube being secured to the heads, preferably by welding. The heads 2 are formed with outwardly-extending flanges 5 which fit inside the shell 1. The end portions of the shell and of the flanges 5 are bent inwards to form a rib 6 and integrally united by welding. The bending is effected in such a manner as to produce a smooth rounded end surface 7.
Patent GB-493074-A (GB)
Title: Improved process of manufacturing pyrethrum extract
IPC: A01N65/12
Filed: 1937-04-02
Abstract: Pyrethrin concentrates are prepared by extracting pyrethrum flowers with acetone or equivalent solvent, such as diethyl ether, benzene, ethyl carbonate or methyl ethyl ketone, removing the solvent, treating the extract with an aqueous alcohol such as 80 per cent methanol, rejecting the residue, removing the alcohol, treating the product with a petroleum hydrocarbon, such as kerosene or a lighter petroleum fraction, rejecting the residue, and if desired, removing the solvent from the final extract.ALSO:Pale coloured pyrethrum extracts containing a high proportion of pyrethrins are prepared by extracting pyrethrum flowers with acetone or equivalent solvent such as diethyl ether, benzene, ethyl carbonate or methyl ethyl ketone, removing the solvent, treating the extract with an aqueous alcohol such as 80 per cent methanol, rejecting the residue, removing the alcohol, treating the product with a petroleum hydrocarbon and rejecting the residue.  The petroleum hydrocarbon may be kerosene in which case the solution may be marketed directly, or may be a light hydrocarbon fraction, free from aromatic hydrocarbons, in which case it may be removed by distillation to yield a pyrethrin concentrate which may be re-dissolved in kerosene.