baber/WOPTO huggingface dataset:
Patent GB-582127-A (GB)
Title: Improvements in radio receivers
IPC: H03J7/32
Filed: 1941-09-08
Abstract: 582,127. Valve circuits for wireless reception. WHALLEY, H., MILLER, C. W., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Sept. 8, 1941, No. 10139. [Class 40 (v)] In a panoramic radio receiver in which a wave-band is scanned by automatic variation of tuning to show the frequencies at which transmissions may be taking place, two and preferably three frequency change stages are provided with aperiodic signal frequency amplification prior to the first of the stages and the frequency of the first oscillator is high to provide a high intermediate frequency to obtain high sensitivity and selectivity and freedom from second channel interference. In this way, by using the " single span" tuning system, only a single tuning member need be varied to obtain the scanning sweep which may be a variable thermionic reactance as described in Specification 582,125. The first intermediate frequency circuit may have a band width of 500 kc. which is the width of the frequency band scanned, the tuning of the first oscillator determining the band scanned as described in Specification 582,126.
Patent GB-527123-A (GB)
Title: Improvements in seat and mattress constructions
IPC: A47C7/18
Filed: 1939-03-31
Abstract: 527,123. Spring surfaces. REYNOLDS, A. T., and TODE, W. F. March 31, 1939, No. 10179. Convention date, Sept. 12, 1938. [Classes 52 (i) and 52 (iv) ] A sponge rubber seat or mattress squab 2 is mounted on 'a diaphragm of stiff material 4, which may be perforated, with marginal supports of sponge rubber 14 which overlap the edges of the diaphragm to provide lateral cushioning. In the case of a mattress the surface may be divided longitudinally or laterally and the sponge rubber supports may be mounted on a removable frame having a sponge rubber buffer 48 on its underside. A pocket P may be formed along the sides into which the bedclothes can be tucked, the mattress ticking 56 being held therein by rods 58.
Patent GB-1032113-A (GB)
Title: Improvements in jet-propelled aeroplanes
IPC: B64C29/00
Filed: 1962-03-16
Abstract: 1,032,113. Boundary layer control. VICKERS-ARMSTRONGS (AIRCRAFT) Ltd., J. WOTTON, and D. W. FREE. March 5, 1963 [March 16, 1962], No. 10233/62. Heading F2R. [Also in Divisions B7 and F1] In an aircraft engine jet-pipe assembly (Fig. 7, not shown), the after part of the lower wall is constituted by a jet-deflection flap 22, the forward end of which is formed by a drum 25 tangential to the adjacent after end of an expanded portion 19 of the lower wall. The flap 22 is rotatable about the axis 26 of the drum 25. In order to preserve optimum gas flow over the surface of the flap 22, more particularly when this is in the vertical lift or reversed-thrust positions, the boundary layer of the jet stream is re-energized by expelling compressed air or other gas through one or more transverse slits 80 formed in the surface of the drum 25 and at an acute angle to it, suitable connections 81 being made between the slots 80 and a compressor. Means may be provided whereby air or other gas is caused to issue from the slits 80, for augmentation of the boundary layer, automatically when the flap 22 is deflected from the forwardthrust position. If desired, air or other gas may also be piped to a slit 82 in a flexible lip 30 on the expanded portion 19.
Patent GB-103768-A (GB)
Title: Improvements in Infants' Apparel.
Inventor: JONES WILLIAM KETCHUM
IPC: A41D11/00
Filed: 1916-07-21
Abstract: 103,768. Jones, W. K. July 21, 1916. Undervests; wearing-apparel for inf a n t s .- Infants' clothing is reinforced at the bottom 2, which is of double thickness, and also vertically by a band 6 passing over the shoulders and having holes 5 to receive a pin. In the form shown, the garment opens at the side of the front; but for a garment opening centrally, the body 8 of the band is divided vertically, half lying along each meeting edge.
Patent GB-342598-A (GB)
Title: Improvements in venting devices for receptacles intended to be filled with liquid
IPC: F16D31/02
Filed: 1930-04-01
Abstract: 342,598. Clutches. JUNKERS, H., 21, Kaiserplatz, Dessau, Anhalt, Germany, April 1, 1930, No. 10362. Convention date, April 13, 1929. [Class 80 (ii).] . A venting device for use with overload-release clutches containing liquids under pressure, adapted to remove air automatically as to keep the receptacle full of liquid, comprises a chamber 16 communicating by a passage 15 with the liquid chamber and containing a piston 17 channelled at 20 and pressed by a spring 19 arranged so that when air is passing the resistance of the passages is such that the piston is not moved, but when liquid is passing the increased resistance causes the pressure to rise so that the piston is moved back to close the exit 18. The clutch comprises pistons 7 bearing by rollers 8 on a cam rim 5. Torque is transmitted when the liquid in the cylinders 6 is under pressure. By means of valves 11, 12 communicating with a liquid chamber 13, pressure release at a predetermined point is obtained so that not more than a certain torque can be transmitted.
Patent GB-350113-A (GB)
Title: Improvements in or relating to casters for furniture
IPC: B60B33/00
Filed: 1930-04-01
Abstract: 350,113. Ball bearings. WADE, H., 111, Hatton Garden, London.-(Bassick Co. ; 38, Austin Street, Bridgeport, Connecticut, U.S.A.) April 1, 1930, No. 10364. [Class 12 (i).] A castor is provided with a ball race forming a unit complete in itself and having means whereby it can be fitted to the mounting for the floor-engaging element. Several forms are described wherein either the inner or outer race is in two sections 22, 24, Fig. 6, and the hornpiece 10 or like element is preferably secured to a depending stem 21 on the inner race, while the outer race 18, or a casing enclosing the same, is provided with securing means for a pintle 14 or baseplate 46.
Patent GB-624747-A (GB)
Title: Improvements in or relating to high frequency electric heating equipment comprising a transformer
IPC: H05B6/04
Filed: 1947-04-18
Abstract: 624,747. Induction heating. STANDARD TELEPHONES & CABLES, Ltd., and BURTT, K. M. April 18, 1947, No. 10403. [Class 39(iii)] [Also in Group XXXV] Induction heating apparatus comprises a high frequency transformer having a primary winding 7 forming a part of a thermionic valve oscillator circuit; and secondary windings 10 and 11, permanently mounted about winding 7, having terminals 14-16 to which alternative heating applicators may be connected. Terminal 16 is common to both secondaries, and applicators are connected between terminals 14 and 16, or 15 and 16. Winding 11 is preferably of strip material wound flat, and winding 10 is a single turn of cylindrical form. A further winding, connected to the grid of the valve oscillator circuit may be placed within winding 7.
Patent GB-1248317-A (GB)
Title: Improvements in semi-conductor rectifier groups
IPC: H02M7/162
Filed: 1969-02-27
Abstract: 1,248,317. H.V.D.C. converters. ALLMANNA SVENSKA ELEKTRISKA A.B. 27 Feb., 1969 [28 Feb., 1968], No. 10461/69. Heading H2F. An H.V.D.C. converter comprises a semiconductor rectifier group 1 to 12 (Fig. 1), the rectifier numbers signifying the commutating sequence, connected to a D.C. transmission line 25, 26 and on the A.C. side to transformer windings 14, 15 which are Star and Delta-connected respectively giving a mutual phase displacement of 30 degrees between the 3-phase voltages thereat. By-pass rectifier 13 and switch 19 are provided. Each rectifier, shown symbolically as two series connected semi-conductor elements, in practice comprises hundreds of series and parallel connected elements. The rectifiers are arranged in three piles as shown, Fig. 2, each comprising four rectifiers 1, 7, 2, 8 and so on. Plates 21, 22, 23 form both structural components and interconnections. A.C. connections are made to points 14a, 14b, 14c, 15a, 15b, 15c. Fig. 3 (not shown) illustrates a section through a pile, the semi-conductor elements being screwed to and arranged helically around a square column and connected to voltage dividing resistors and capacitors. A cylindrical outer sheath surrounds each pile. The rectifiers are controlled by a 12-phase pulse generator 20 only one output phase of which is shown, namely that coupled to rectifier 9 by a transformer 209.
Patent GB-427505-A (GB)
Title: Improvements in universal joints
IPC: F16D3/30
Filed: 1934-04-06
Abstract: 427,505. Universal joints. MYARD, F. E., 21, Boulevard St. Michel, Paris. April 6, 1934, Nos. 10513 and 10514. Convention dates, April 6, 1933 and Feb. 2, 1934. [Class 80 (ii)] [See also Group XXXI] A constant velocity - ratio double universal joint, particularly for driving the steering-wheels of motor vehicles, comprises a separate pivotal connection, such as by pins b, b<1>, Figs. 3 and 4, on each shaft a, a<1>, and blocks c, secured to the pivotal members b, bl and having flat sliding engagement with a member such as a pair of plates g<1>, g<2>, which have transverse sliding engagement, as through a pin f, with a spherically surfaced knuckle e, against which the complementary shaft-ends abut directly, so as to maintain the ball at the point of intersection of the axes of the shafts. The blocks c may be milled from solid rectangular blocks embracing the shaft-ends ; they may be separately attached to the ends of the pins b, b<1>, or they may be formed as H-sectioned members embraced by shaft-forks. The two plates g<1>, g<2> may be milled from a solid block in such a way as to leave a pair of strengthening-ribs g connecting the faces. Fig. 14 shows a modification in which the shafts a, a<1> have transverse cylindrical bores receiving cylindrical blocks b which are each in two segmental parts, with their opposed flat surfaces separated by a slidable plate d, through which passes a pin e, of cylindrical or polygonal cross-section and carrying a knuckle constituted by endpieces h which have internal or external spherical engagement with the shafts. The blocks b have retaining end-flanges, and they may alternatively be formed as ordinary pivotpins, the plate d being forked to engage them. In the steering - wheel driving - arrangement shown in Fig. 3, the joint is enclosed in a non- rotating spherical casing l, i, the part i of which is secured to the steering pivot-pins j, k by a complementary bolted cap-piece il. The pivot-pins j, k are carried in an arm h<1> forming part of the front-axle h. The thrustbearing of the upper pin j may be a flat plain one or a tapered roller one, as shown. The Specification as open to inspection under Sect. 91 states that the pin e, Fig. 14, may be in one piece with the knuckle-ends h and of the same diameter as them. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1104158-A (GB)
Title: Improvements in or relating to channel, for scraper chain conveyor
IPC: B65G19/28
Filed: 1965-03-12
Abstract: 1,104,158. Endless conveyers. GEWERKSCHAFT EISENHTTE WESTFALIA. 12 March, 1965 [19 Nov., 1964], No. 10551/65. Heading B8A. A replaceable reinforcement portion 3 for a scraper conveyer channel length 1 has an integral projection 10 which, in its unstressed state, is longer than a complementary recess 9 in a channel reinforcement portion 16. When the conveyer is operated, longitudinal forces due to the tension in the conveyer chains and in the haulage chains for the winding machine cause the projection 10 to be compressed before surface 14 of portion 3 meets surface 15 of portion 16. The arrangement ensures that a substantial proportion of the longitudinal forces are absorbed before they are applied to the whole of the channel.
Patent GB-810549-A (GB)
Title: Improvements in or relating to primary and secondary electric cells and batteries
IPC: H01M6/38
Filed: 1955-04-12
Abstract: 810,549. Batteries. YARDNEY INTERNATIONAL CORPORATION. April 12, 1955 [April 9, 1954; July 6, 1954], No. 10553/55. Class 53. A primary or secondary cell is activated by breaking the common partitioning wall between two separate compartments formed within a substantially fluid-tight chamber, the first compartment containing the cell electrodes and the other containing the electrolyte, the electrode compartment being at a lower pressure. Fig. 1 shows a silver-zinc cell having a fluid-tight casing 10 arranged to accommodate within it an electrolyte container 21, the cell electrodes being located at the lower part of the casing. The container 21 has a centrally positioned hollowed rod 36 having its upper end held in the closure member 38. The rod top end is made fluid tight by a foil 40. When the rod 36 is hit by a cam 41 or by any other striking means, the weakened bottom part 34 of the container 21 is broken away. Simultaneously, the foil 40 is ruptured so that the electrolyte is under atmospheric pressure and thus discharged into the compartment containing the electrodes. The electrode compartment should be maintained at a sub-atmospheric pressure by exhausting, during assembly, the air through a passage 44 arranged as in Fig. 3 (not shown). In Fig. 4, the electrolyte container 52 has an aperture 68 closed by a diaphragm 69 which is capable of being ruptured when a hollow rod 74 is urged downwardly. The rod 74 is slidably mounted in a guide 40 having at its lower end a diaphragm 76 also capable of being ruptured by the rod 74.
Patent GB-818351-A (GB)
Title: Improvements in or modifications of apparatus for detecting the presence or absence,at a location, of a body of liquid
Inventor: WORSWICK BERNARD AUGUSTINE
IPC: G01F23/296
Filed: 1957-04-01
Abstract: 818,351. Ultrasonic testing. BAILEY METERS & CONTROLS Ltd. March 31, 1958 [April 1, 1957], No. 10570/57. Addition to 809,681. Class 118 (2). [Also in Group XXXIX] Continuous liquid level indication between limits is provided by sensing the capacitance of an ultrasonic transducer which varies with liquid level. Level of liquid 3 between upper and lower boundaries of piezo-electric transducer 4 is indicated by meter 9 energized from oscillator 5. In a further arrangement, Fig. 2 (not shown), range of measurement is increased by interposing a flared plate (see Group XXXIX) between transducer and tank wall. The plate may be apertured in the tank wall and ultrasonically insulated therefrom by a rubber or cork collar. Transducer 4, Fig. 6, forms part of feedback oscillator circuit of triode 31: oscillation amplitude decreases as liquid rises above the transducer's lower level giving increasing current through meter 41. Capacitors switched under thermostatic control across capacitor 35 compensate for liquid temperature variation. A magneto-strictive transducer may be used.
Patent GB-1139537-A (GB)
Title: Textile yarns
Inventor: FREYDBERG RALPH MARTIN
IPC: D02G3/12
Filed: 1967-03-07
Abstract: 1,139,537. Metal/plastics laminate. ACME BACKING CORP. 7 March, 1967, No. 10627/67. Heading B5N. [Also in Division D1] A thread may be longitudinally slit from a laminate comprising an aluminium foil having a thickness of 0À00035 to 0À00075 inch adhered on one or both sides by a coloured or transparent resin adhesive to a transparent polyester, polyolefin, polystyrene, nylon, or acetate film having a thickness of 0À00015 to 0À0004 inch.
Patent GB-1207785-A (GB)
Title: Improvements in or relating to counter-blow hammers
Inventor: HARVANEK PAVEL
IPC: B21J7/34
Filed: 1969-02-28
Abstract: 1,207,785. Forging hammers. VYZKUMNY USTAV TVARECICH STROJU A TECHNOLOGIE TVARENI. 28 Feb., 1969 [18 March, 1968], No. 10890/69. Heading B3H. A counterblow hammer comprises a ram 2 urged towards an anvil 1 by pressurized gas in the cylinder 4 of a piston-cylinder assembly and raised by pressurized fluid and the anvil is mounted on piston-cylinder assemblies 5, 6 connected by a conduit 7 to the cylinder 4 through a control valve 8 and a return valve 9. The pressurized gas in the cylinder 4 may be supplied from a pressure vessel (not shown), or produced by trapping gas in the cylinder as the piston 3 is raised. The pressurized fluid is oil drawn from a reservoir 14 by a pump 12. In operation the pump supplies oil to the cylinder 4 to raise the ram 2 to a certain height whereupon an impulse opens a by-pass valve 17 to return the oil from the pump to the reservoir. The valve 8 is controlled manually or electromagnetically and opened to allow the ram 2 to descend and the anvil to rise. After impact the anvil descends and oil is displaced from the cylinder 6 to the cylinder 4 through the return valve 11 to partially raise the ram.
Patent GB-128746-A (GB)
Title: Improvements in Step Ladders.
Inventor: CHAMPION ABRAHAM LINCOLN
IPC: E06C1/22
Filed: 1918-06-28
Abstract: 128,746. Champion, A. L., and Merritt, R. L. June 28, 1918. Ladders.-In a step-ladder having adjustable sliding extension pieces on the legs for use on stairways &c., the ladder legs 2 and the back legs 8 have longitudinal slots which are countersunk at the inner side in order to receive the conical heads 12<1> of the bolts, which clamp the extension pieces in position. The bolts are thus capable of passing the steps, which are so constructed at the ends as to bridge the slots. Bolts 14, 21 with U-shaped heads prevent the extension pieces from turning about the clamping- bolts. The adjustable braces 25 comprise two bars 26, 27 pivoted to the legs and each having a stud 28 to engage one of a number of holes in the other. A fastening, such as a pivoted hooklike clamp 30, secures the bars together after adjustment.
Patent GB-401180-A (GB)
Title: Improvements in water tube boilers for steam waggons, small locomotives and the like
IPC: F22B21/00
Filed: 1933-04-10
Abstract: 401,180. Supporting steam boilers. MASCHINENFABRIK ESSLINGEN, Esslingen - on - Neckar, and GUNTHER, O., 30, Mettingerstrasse, Esslingen-on-Neckar, Wurtemberg, Germany. April 10, 1933, No. 10712. [Class 123 (ii).] Water-tube boilers for steam wagons, small locomotives, and like vehicles with a water-tube firebox 1 have an upper steam drum 5 rigidly connected at both ends by unheated down tubes 8-11 to the firebox foundation ring 3 and exclusively supported thereby. In addition to the wall tubes 4, the boiler heating surface includes tubes 6 connecting drum 5 with a drum 7 and an independent circuit comprising tubes 17 connecting drums 15, 18. A preheater comprising drums 22-25 connected by three water-tube banks and a superheater 32 are also provided.
Patent GB-1248885-A (GB)
Title: Manufacture of cement clinker
IPC: C04B7/04
Filed: 1970-03-05
Abstract: 1,248,885. Purification of calcium sulphate; cement clinker. OSTERREICHISCHE STICKSTOFFWERKE A.G. 5 March, 1970 [6 March 1969], No. 10719/70. Headings C1A and ClH. Cement clinker of low fluorine content is prepared from gypsum which is a by-product of the phosphoric acid process by heating the gypsum alone to a temperature between 500 and 900 C. preferably 600 to 800 C., in the S0 2  containing waste gases of a calcining furnace, adding known cement forming additives, e.g. coke and sand, and calcining the mixture. In one example given the fluorine content of gypsum was reduced from 0À8 to 0À09% by heating at 800 C. in gases containing 8% SO 2 .
Patent GB-802643-A (GB)
Title: Improvements in or relating to electric power installations for electric motors
IPC: H02P9/38
Filed: 1956-04-09
Abstract: 802,643. Alternators. SIEMENS-SCHUCKERTWERKE A.G. April 9, 1956 [April 9, 1955], No. 10823/56. Class 35. [Also in Group XXXVII] An electric power installation comprises synchronous generators 2, 3, supplying polechange motors 4 of the induction type having short-circuited rotors and falling torque characteristics. Each motor may be constructed as a double machine, one component of which is capable of operating at four or eight poles, and the other component having thirty-two poles. The exciting windings 6, 7 of the generators are supplied from transformers 9 through rectifiers 8. The transformers have primary windings 11 which are energized in accordance with the generator voltage through chokes 12 and resistors 13. Other primary windings 14 of the transformers 9 are excited in accordance with the output currents of the generators through intermediate transformers 15. Thus, the vectorial sum of a component proportional to the load current and of one proportional to the voltage is formed in each transformer 9, and is then rectified for supply to the field windings 6, 7. In this manner, the voltage of the generators is maintained substantially constant when the induction motors are switched on or have their number of poles changed.
Patent GB-695061-A (GB)
Title: Improvements relating to aircraft retractable alighting gear
Inventor: HUGHES DENNIS BERNARD
IPC: F16F5/00
Filed: 1951-05-08
Abstract: 695,061. Liquid springs. DOWTY EQUIPMENT, Ltd. May 8, 1952 [May 8, 1951], No. 10831/51. Class 108 (iii). A liquid spring comprises a plunger 9 and working chamber 4, an annular piston A, mounted in slidable sealing relation with the plunger 9 and chamber 4, between an abutment 29 on the plunger 9 and the end B of the chamber 4, a valve 43 adapted to seal the chamber from an external connection 52 under liquid pressure in the chamber 4, a liquid-actuated member 47 arranged under the application of liquid pressure, to open the valve 43, and a second external connection 51 communicating with the member 47 and communicating by a connection 38 with the chamber space above the piston A, the selective application of an external pressure source to the connections 52, 51 resulting in extension or retraction of the spring. The piston A comprises a gland of the " differential area " type and forms the gland between the plunger 9 and chamber 4 during operation of the spring. The valve 43 is biased into seated position by a spring 46 acting between a plug 42 rigid with the chamber 4 and forming a seating for the valve, and an apertured piston 45 rigid with the valve stem 44. The member 47 comprises a piston which under the action of pressure via the connection 51 rises to engage the piston 45 and thus unseat the valve 43. The plunger carries a damping head 14 comprising integral flanges 16, 17. The apertures of the lower flange 16 comprise damping orifices 21 which are by-passed on the compression stroke by a spring-loaded valve 23 and holes 27. According to the Provisional Specification, the valve 43 may be mounted on the inner end of the plunger. The connections 38, 51 and 52 are then effected via the plunger.
Patent GB-855572-A (GB)
Title: Synthetic tanning agents
IPC: C14C3/20
Filed: 1958-04-03
Abstract: Synthetic tanning agents are obtained by further condensing mixed condensation products of sulphonic acids of polynuclear aromatic hydrocarbons, halogenated phenols and aldehydes with mono- or di-hydroxy phenols and aldehydes in an acid medium. Specified phenols for the further condensation include phenol itself, cresols, xylenols, chlorophenols, naphthols, 4, 41-dihydroxy diphenyl methane, 4, 41 dihydroxy-diphenyl dimethyl methane, 4, 41-dihydroxy-diphenyl sulphone, pyrocatechol, resorcinol, hydroquinone, and 1, 5-dihydroxy naphthalene.  Urea, thiourea, melamine and dicyandiamide may partially replace the phenol. Formaldehyde or formaldehyde-donating substances are the only specified aldehydes.  Tannins can be obtained which contain 5 to 10 phenolic hydroxyl groups per sulphonic acid group.  In one of the eight examples, the preliminary condensation product is obtained from a technical phenol chlorination mixture containing 53% o- and 43% p-chlorophenol, a naphthalene sulphonation mixture and an aqueous formaldehyde solution, and this is further condensed with empyreumatic oil and formaldehyde to give a readily pourable, water-soluble tanning syrup.  Other constituents of the precondensates specified in the examples are phenanthrene sulphonic acid, o-chlorophenol, and 6-chloro-o-cresol.  Other phenols exemplified for the further condensation are phenol itself, pyrocatechol, and a technical mixture of o- and p-hydroxy-diphenyl. Specifications 747,675, 799,224 and 855,571 are referred to.,