baber/WOPTO huggingface dataset:
Patent GB-969597-A (GB)
Title: Improvements in or relating to a current pulsing circuit
IPC: H02P7/285
Filed: 1962-06-21
Abstract: 969,597. Rectifying; control of D.C. motors. ATELIERS DES CHARMILLES. June 21, 1962 [June 23, 1961], No. 23995/62. Headings H2F and H2J. [Also in Divisions B3 and H3] A pulse generating or switching circuit comprises a semi-conductor switching element connected between a main D.C. source S1 and a load 1. A series circuit comprising an auxiliary source S2, a diode 11 and the primary 3 of a transformer 2 is connected across the main electrodes of the switching element, the transformer 2 being coupled to the control electrode of the switching element in such a way as to render the element non-conductive whenever the load impedance becomes reduced to a predetermined value. Motor-control circuits.-Fig. 3 shows a circuit for controlling the voltage and maximum current applied to the rotor 24 of a D.C. motor. The output of a three-phase transformer 20 is rectified at 21 and smoothed at 22, 23 giving a direct voltage which is fed to rotor 24 under control of switching transistor Q1 The sixth (or a higher) harmonic of the rectified output is selected by a tuned circuit L, C and fed to a peaking circuit comprising saturable inductor 30 and saturable transformer 31. The bridge rectifier 32 thus provides pulses at twelve (or a higher multiple) times the supply frequency. Each positive pulse is passed via a PNP currentlimiting transistor Q2 to the high-power NPN transistor Q1, rendering Q1 conductive and hence feeding a pulse to the rotor 24. A buildup of current also occurs in the primary 3 of transformer 2, giving an E.M.F. in the secondary 2 which is fed via Zener diode 33 to maintain transistors Q2, Q1 conductive until the core of transformer 2 saturates, when the sign of the secondary voltage reverses, biasing off transistors Q1, Q2. Each time Q1 is cut off the rotor current is maintained via rectifiers 26, 27, inductor 25 and resistor 28. The duration of each pulse and hence the average value of the voltage supplied to the rotor 24 is adjusted by variation of the value of S2, whilst the maximum current is adjusted by variation of the D.C. potential applied to terminals 34, 35. Fig. 1 (see Division H3) relates to a similar circuit used for controlling discharge machining apparatus. In the event of a short-circuit occurring across the load in that circuit the voltage developed across the emitter/collector electrodes of transistor Q1 would exceed that of the source S2 with the result that current in winding 3 would be interrupted, rapidly turning off the main transistor Q1. A self-oscillating pulse generator and other circuits are described, (see Division H3). Specification 962,490 is referred to.
Patent GB-762852-A (GB)
Title: Improvements relating to tractors
IPC: B60B15/02
Filed: 1952-09-25
Abstract: 762,852. Agricultural implements. FERGUSON OF INDIA, Ltd., H. Sept. 25, 1953 [Sept. 25, 1952], No. 24025/52. Class 6(1). [Also in Group XXXIV] A soil levelling device for use in cultivating rice fields comprises boards 14 interconnected by straps 15 and attached to an angle member 16 to which is attached two upwardly inclined arms 17 provided with arms 18 between which is a shaft 21 for attachment to tractor power lifting links 22. The arms 18 are extended forwardly and are provided with channel members 29 which are bolted to and embrace the links 22. The tractor is provided with wheels (see Group XXXIV) in the form of frusto-conical frameworks provided with bars 3 which churn the soil with a paddle-like action.
Patent GB-262696-A (GB)
Title: Improvements in or relating to electric resistances for heating elements or the like
IPC: H05B3/16
Filed: 1926-09-29
Abstract: 262,696. General Electric Co., Ltd., Kinnes, A., and Rycroft, J. L. Sept. 29, 1926. Drawings to Specification. Wire.-The resistance wire of an electric heating element is reinforced where required by an envelope united to it by swaging. The envelope mav be in the form of a metal tube of the same material as the wire and of a size to fit thereto. The reinforcement may be applied to parts of the wire subjected to specially high temperatures or near the terminals.
Patent GB-671363-A (GB)
Title: Improvements in or relating to display devices
IPC: G09F1/00
Filed: 1948-09-14
Abstract: 671,363. Changing signs. HOLT, C. R. Sept. 13, 1949 [Sept. 14, 1948]. No. 24149/48. Class 3(i) [Also in Group XV] A display device comprises a baseboard b, a frame a having an aperture superposed over the baseboard and a plurality of thin strips c each having the opposite ends d of one edge hinged to the frame at 'opposite sides of the aperture and the other edge hinged to the base so that when the frame is superposed on the base in one position, the strips lie flat between the base and the frame and are contiguous along their edges to expose one surface of each strip through the aperture while on relative movement between the frame and the base, the strips are turned over to expose the other surface of each strip through the aperture. Each set of surfaces carries a picture or other representation.
Patent GB-610047-A (GB)
Title: Improved methods of and apparatus for effecting vaporisation at reduced pressure
IPC: F26B3/34
Filed: 1945-09-19
Abstract: 610,047. Vaporization by high-frequency heating at reduced pressure. COMMUNICATIONS PATENTS, Ltd., and STANLEY, E. C. Sept. 19, 1945, No. 24179. [Class 39(iii)] A method of effecting vaporization at reduced pressure comprising the steps of heating the substance, some of which is to be evaporated, by means of a high-frequency field whilst the pressure to which the substance is subjected is above that likely to cause Geissler discharge, and subsequently terminating or reducing the intensity of the high-frequency field and reducing the pressure to which the substance is subjected to obtain the desired vaporization. Specifications 606,567 and 610,036 are referred to. Reference has been directed by the Comptroller to Specification 620,845.
Patent GB-1427892-A (GB)
Title: Process for producing synthetic fibres
IPC: D06M101/16
Filed: 1974-05-31
Abstract: 1427892 Treating textiles ASAHI KASEI KOGYO KK 31 May 1974 [29 June 1973] 24179/74 Heading DIP Fabrics composed of synthetic fibres (e.g. nylon 6, 66, polyethylene terephthalate and acrylonitrile) are rendered antistatic, hydrophillic and soil resistant by adhering onto the surface of the fibres 0.2 to 8% by weight of the fibres of a reaction product of either where X is CH 2 CH=CH 2 , COCH=CH 2 , COCCH 3 =CH 2 , COCCl=CH 2  or COCH 2  CH 2 Cl with x'-(R) n -X' where X' is NH 2 , NHCH 3 , SO 2 NH 2 , SO 2 CH 2 CH 2 NH 2  or COCH 2 NH 2 , R is an oxyethylene unit and n is an integer such that the molecular weight of the diamine is 200 to 5000; and thereafter adhering onto the surface of the coated fibres 0.05 to 3% by weight of the fibres of an aromatic sulphonic acid of formula: wherein Y is H, CH 2 OH or CH 2 SO 2 H, Z is SO 3 H, CH 2 SO 3 H, and m is an integer 5 to 20. An aqueous or non-aqueous solution of the diamine is mixed with an aqueous or non- aqueous solution of Ia or Ib to form a solution of the reaction product. The mol ratio of diamine to Ia or Ib is 1:4 to 4:1. The fabric is dipped into this solution, squeezed and heated to 130 to 170C to dry the fabric and cure the reaction product. The treated fabric is then dipped into an aqueous solution of III, squeezed and heated to 110 to 150C.
Patent GB-279802-A (GB)
Title: Improvements in or relating to closures for cooking vessels and other containers
IPC: A47J27/08
Filed: 1927-09-14
Abstract: 279,802. Charlot, M. A. Oct. 30, 1926, [Convention date]. Lids and covers.- The flat top 2 of a cooking-vessel of oval or elliptical shape in section is provided with an aperture 3 of asymmetrical shape and disposed symmetrically with respect to the axes of symmetry of the vessel. The cover 4 is of similar shape to the aperture and has a stepped edge 5 adapted to engage under the sides thereof; it can be placed in position without being inclined unduly in relation to the top of the vessel. The cover carries a yoke 6 bearing a spindle 7 upon which is journaled a handle 8 formed with a projection 9 disposed between teeth 10 on the upper side of a closure bar 11. By moving the handle into the position shown in dotted lines the bar is forced into engagement with tapered bearing surfaces 14, 15, formed on the top of the pan, and the cover firmly held in place. The cover may be provided with a whistle, manometer, safety valve &c. The closure system according to the invention is stated to be applicable to boilers, vats, reservoirs, &c.
Patent GB-1013092-A (GB)
Title: Improvements relating to ball and socket joints
IPC: F16C11/08
Filed: 1963-06-18
Abstract: 1,013,092. Ball joints. V. LANGEN, June 18, 1963 [July 27, 1962], No. 24235/63. Heading E2F.  The housing 1 has a lining 3 of resilient material which extends over the surface of the ball 4 on both sides of the equator and has slots 6 extending from the exit aperture for the pin 5 substantially to the equator, the lining also having, on the side of the equator remote from the pin, an opening which is of smaller extent than the exit aperture and contains a:cap 7 of resilient material which is pressed against the ball by a spring 8. -The-lining and cap are preferably made of plastic material.
Patent GB-142738-A (GB)
Title: Manufacture of para-cymene
Filed: 1919-10-06
Abstract: p-Cymene is prepared from residual terpenes, boiling at about 175 DEG C., from the manufacture of artificial camphor, or pine-needle oil fractions boiling at about 175 DEG  C., which consist essentially of i-limonene, by chlorination followed by steam-distillation of the product.  The p-cymene may be purified by treating with zinc chloride or other condensing agent, or with oxidizing-agents such as potassium permanganate.
Patent GB-704868-A (GB)
Title: Improvements in or relating to spigot or dowel connections
IPC: F16B19/02
Filed: 1950-10-05
Abstract: 704,868. Bolted joints SILENTBLOC, Ltd., and GRAHAM, S. J. G. Sept. 14, 1951 [Oct. 5, 1950], No. 24348/50. Class 83 (4). [Also in Groups XXIII, XXIV and XXV] In bolting together parts that are registered by bushes in one part projecting into a fitting recess in the other, the bushes are arranged to permit withdrawal without separation of the parts. As applied to a flexible transmission coupling an intermediate member C, Fig. 1, has four spaced sockets C' in each of which is bonded a rubber &c. bush D also bonded to a sleeve E. These sleeves are mounted in diametrically opposed pairs and have socket -ends, those E2 of one pair facing the driving member A, and those E3 of the other pair facing the driven member B. Lugs A1, B1 on these members are bored the same size as the sockets and receive dowel bushes G flanged at G1. Nutted bolts F pass through the sleeves and bushes to complete the coupling. The bushes may be tapped for threaded engagement with the bolts additionally to the nuts or the bushes may be integral with the nuts. On withdrawal of the bolts into the sleeves E and the bushes G into the lugs A1, B1 the intermediate member can be removed laterally without axial displacement of either the driving or driven member. Recesses may be. provided in the lugs A1, B1 to receeive a tool for prizing out the bushes, or the recesses may be formed in the bush flanges. In a further form the flanges are drilled and tapped to receive grub screws G<SP>5</SP> by which retraction may be effected. Alternatively the periphery of the flanges may be screwed to receive a nut for retraction ; the nut may be free or captive.
Patent GB-870627-A (GB)
Title: Improvements in or relating to multi range testing devices
Inventor: MAYES DESMOND SYDNEY
IPC: G01R15/12
Filed: 1957-08-01
Abstract: 870,627. Electric measuring instruments; range-changing circuits. BUSH & RANK CINTEL Ltd. July 31, 1958 [Aug. 1, 1957], No. 24396/57. Class 37. Testing apparatus has a test circuit terminating in probe members which are applied to a circuit or component under test, and which carry or include a manually-operable switch or switches arranged to vary the test range of the test circuit. One probe comprises an insulating sheath 1, Fig. 1, with a contact 2 connecting a circuit or component under test to a test circuit through wire 7, and a button 8 which when depressed closes spring contact 5 onto contact 6. The range of an ohmeter is altered by switches 30, 31, Fig. 3, of probes 20, 21, actuating one or both of relays 28, 29 whose contacts 28a, 29a select either one or two of the known resistances of network 22-25. The probes are applied across the unknown resistance, and the voltage drop across the system, which is supplied by a battery 33, is applied to a voltage sensing device at terminals 26, 27. The lowest resistance of network 22-25 may comprise the coil of a relay which operates a buzzer when the probes are short-circuited. Relays 28, 29 may also operate devices such as lamps, to indicate which range is in use. A probe may carry a number of switches, and these may comprise an insulating ring outside sheath 1 and having cam faces on its inner surface.
Patent GB-758084-A (GB)
Title: Improvements in rock drills
IPC: E21B10/40
Filed: 1952-09-30
Abstract: 758,084. Drill bits. DIONISOTTI, J. Sept. 30, 1952, No. 24441/52. Class 83 (3). [Also in Group XXIII] A rock-drill bit comprises a crown having grooves for receiving cutting inserts, the grooves having walls that converge from one end to the other and the inserts having anchoring portions conforming with the grooves, the inserts being forced into engagement with the grooves by the forces applied during drilling. A drill-crown 1 has inserts 2 secured in conventional manner on its apex, inserts 3 of curved wedge form shaped so that rotation of the drill during cutting tends to tighten the inserts in the grooves, and inserts 4, also of curved wedge form, secured in the outer periphery of the crown. In a modification, Fig. 8 (not shown), the inserts 3 and 4 are secured in steps in the crown in dovetail grooves.
Patent GB-1448211-A (GB)
Title: Language conversion device
IPC: G06F17/27
Filed: 1972-05-24
Abstract: 1448211 Language translation S R LEWIS 24 Aug 1973 [24 May 1972] 24441/72 Heading G4H An electronic language conversion device compares an input word with the contents of a first memory in turn and displays corresponding contents from a second memory on equality, using electrically-operable light-emitting display means. The input word comes from a register fed from a keyboard and is also displayed. The memories and keyboard can be interchangeable.
Patent GB-535132-A (GB)
Title: A device for use in the burning of garden refuse and the like
IPC: F23G7/10
Filed: 1939-08-25
Abstract: 535,132. Refuse-burning stoves. GRAHAM, M. Aug. 25, 1939, No. 24458. [Class 126] A flat or curved plate 1, Fig. 1, of metal, asbestos, or other non-inflammable material having a gap 4 in its lower edge to form a flue opening is supported by feet 2 in a vertical or nearly vertical position on the windward side of a heap of garden refuse to be burnt. The feet 2 may be riveted, hinged, or removably connected to the plate 1. A slidable member may be provided at the rear of the plate to vary the size of the flue opening 4. Fig. 5 shows a plate 1 formed with a flue opening 4 supported by other plates 11, 12, 14 extending around the heap, one of which may itself be gapped at 13. Instead of the flue opening 4 one of the plates may be secured in a raised position. Reference has been directed by the Comptroller to Specification 144,766, [Class 126].
Patent GB-353283-A (GB)
Title: Improvements in pyrophoric pocket lighters
IPC: F23Q2/08
Filed: 1930-08-15
Abstract: 353,283. Frictional pocket igniters. PROJAHN, K. F., 5, Friedrichstrasse, Aschaffenburg, and GILLIS, I., 1, Kaiserstrasse, Frankfort-on-Main, both in Germany. Aug. 15, 1930, No. 24508. Convention date, March 19. [Class 75 (iii).] The friction member b is connected by links g with a lever d, which carries the wick-cap f and is held in the closed position against the action of a driving spring i by the hooked end d<1> engaging under a spring- pressed bolt k extending transversely through the bearing frame a. The bolt k is provided with a nut l, by means of which it can be moved axially for releasing the lever d and thereby operating the igniter and which is adapted to be screwed along the bolt against the adjacent wall of the frame a for locking the lever in the closed position. The end d<1> automatically re-engages the bolt when the lever is moved into the closed position, the bolt being temporarily displaced by the inclined edge d<2> engaging the shoulder thereon. The spring i is coiled around the shaft c within an annular recess c<2> in the enlarged head c<1>, one end of the spring being connected to the head and the other to the frame a. The friction member is fixed to the shaft c by means of a groove b<1> engaging flats c3.
Patent GB-206632-A (GB)
Title: Improvements in or relating to processes for producing bread meal and in apparatus therefor
IPC: A23L13/40
Filed: 1922-09-11
Abstract: 206,632. Garrey, J. Sept. 11, 1922. Cereal preparations.-Bread meal for making sausages &c. is produced by disintegrating baked bread, drying the separated particles by passing them in counter-current through a stream of heated air, and cooling them. The bread, after being broken in a crusher 1, is passed by conveyers to a drying kiln 8 through which a current of hot air passes upwards. In the kiln 8 a number of corrugated baffles are arranged as shown in the upper and lower portions, the middle portion 14 being clear. Grids 13 of heating pipes are arranged at different heights in the kiln, ridge baffles being placed above the pipes to prevent the bread from lodging on them. From the drying kiln the bread passes to a cooling-device 19 and thence to bagging machinery.
Patent GB-973586-A (GB)
Title: Improvements in or relating to cartridges for injection moulding
IPC: B29B13/00
Filed: 1962-06-27
Abstract: 973,586. Cartridges for injection moulding. W. DREVE. June 27, 1962 [July 18, 1961], No. 24598/62. Heading B5A. A cartridge of aluminium filled with plastics material for producing injection mouldings (e.g. artificial teeth) has the material contained therein provided with inserts of good heat conducting material. The inserts may take the form of perforated discs 3 placed alternately with tablets of plastics material 2 in an aluminium cylinder 1. The inserts may also take the form of axial vanes or of a spiral.
Patent GB-257760-A (GB)
Title: Improvements in hoods for use on vehicles
IPC: B60J7/06
Filed: 1925-10-03
Abstract: 257,760. Daimler Co., Ltd., and Such, M. A. Oct. 3, 1925. Hoods.-In collapsable hoods provided with a horizontal rail to engage with the windows or side screens the edge of the hood material is provided with a tightening device, such as a cord or cable, to cause the edge to bear firmly against the rail and if desired the tightening device may be connected to the means for securing the hood in the raised position so that disconnection releases the tightening device. As shown, the tightening device comprises a cord 7 and sheath 8, preferably a Bowden wire and sheath, secured to the edge 6 of the hood material 5 and adapted, when tightened, to draw it into a groove 4 in the horizontal rail 3. The cord &c. may be secured to the device 9, 10 for attaching the hood to the windscreen so that the hood edge is automatically released when the hood is released from the windscreen.
Patent GB-331127-A (GB)
Title: Appliances for playing a captive ball game
IPC: A63B67/10
Filed: 1929-08-13
Abstract: 331,127. Taylor, L. W. Aug. 13, 1929. Parlour games; outdoor games.-An appliance for playing a game of the type wherein a captive ball suspended from an upright pole is struck by bats, rackets, &c. in the hands of opposing players, is provided with obstructive means arranged outside the radius of flight of the ball but within reach of a connection carried by the ball. In an appliance suitable for indoor use. Fig. 1, the upright pole h is secured by a central screw o to a foldable base a, and the ball b is tethered to the pole by a cord c with a short length of chain connected to a swivel m. The ball carries a flexible loop d, or a single cord with a knot at the outer end. Attached to the base a are two bent wires r curled over at their outer ends so as to engage the loop d as the ball passes. For packing purposes the wires may be turned inwards about the pivots s. If a player mishits, the ball may be obstructed by the base a. In an outdoor form of the appliance, Fig. 4, a tape u is provided for obstructing mishits.
Patent GB-289909-A (GB)
Title: Process for the preservation of mineral oils
IPC: C10L1/22
Filed: 1926-11-05
Abstract: 289,909. Hofmann, F., and Dunkel, M. Nov., 5, 1926. Mineral oils; lubricants. - Mineral oils, especially lubricating and transformer oils, are preserved against deterioration when exposed to air or oxygen at elevated temperatures, by addition of a cyclic amine of high alkalinity. In examples, 0.1 per cent of piperidine, of diethylaniline, or of phenylene diamine is used. Reference has been directed by tke Comptroller to Specification 168,076,
Patent GB-492420-A (GB)
Title: Insulation for electrical apparatus
IPC: H01B3/18
Filed: 1937-09-10
Abstract: Electrical apparatus is insulated with fibrous material impregnated with oxidized abietic acid or a composition comprising oxidized abietic acid and a cellulose derivative, for example cellulose acetate in acetone solution.
Patent GB-1382318-A (GB)
Title: Spring suspension systems particularly for vehicles
IPC: B60G11/00
Filed: 1972-05-25
Abstract: 1382318 Controlling vehicle suspension height HOESCH AG 25 May 1972 [22 Oct 1971] 24728/72 Heading B7D [Also in Division F2] In a vehicle suspension system comprising hydro-pneumatic suspension units communicable through internal or external level control valves with a pump 5 driven by a motor 6 or with a reservoir 7 and arranged so that levelling operations are externally triggered by signals from external electric signalling means, a high pressure switch 15 is arranged to de-energize the motor 6 when after an upward levelling operation the flow of fluid to the suspension units is blocked, and a low pressure switch 20 is arranged to close a solenoid valve 16 to cut-off communication with the reservoir 7 when after a downward levelling operation flow of fluid from the suspension units is terminated by the level control valves. In Fig. 1 each suspension unit 1, 1<SP>1</SP> has internal level control valves 4, 17 communicating through respective non-return valves 10, 18 with a supply line 9 from the pump 5 and a return line 19 to the reservoir 7. The system includes a non-return valve 8 downstream of the pump 5, a supply-pressure relief valve 21, and a filter 22. In Fig. 4 each suspension unit 37, 37<SP>1</SP> includes a reservoir chamber 41 with a gas spring 40, and an external level control valve 26 is connected to the units 37, 37<SP>1</SP> through valve means 27 which prevent fluid from passing directly from one unit to the other when the vehicle travels round bends. In alternative arrangements, Figs. 2, 3 (not shown), supply and return of fluid to and from the suspension units is affected through a single line. In a combined system, Fig. 5 (not shown), for both axles of a vehicle, the suspension units on one axle have internal level control valves and the units on the other axle have an external level control valve. In another embodiment, Fig. 6, the suspension system is connected to a central hydraulic supply system 46 including a high pressure reservoir 48 through the solenoid valve 16 controlled by the low pressure switch 20 and a second solenoid valve 47 controlled by the high pressure switch 15 or by a high pressure switch 49 in the central hydraulic supply system 46. The external electric signalling means, Fig. 7, for initiating levelling operations includes one or more door or boot compartment switches 50, a time or distance switch 51, a driver-operable switch 52, level sensing switch with a time-delay circuit 55 and a signal processor 53 connected to the high and low pressure switches 15, 20, the solenoid valve 16, and the motor 6 or solenoid valve 47.