baber/WOPTO huggingface dataset:
Patent GB-425876-A (GB)
Title: Improvements in or relating to air cooling and conditioning apparatus
IPC: F24F13/22
Filed: 1934-08-29
Abstract: 425,876. Pressure-regulating valves. PAYNE, M., 50, Hook Road, Surbiton, Surrey, and BRITISH THERMOSTAT CO., Ltd., Teddington Works, Windmill Road, Sunbury, Middlesex. Aug. 29, 1934, No. 24937. [Class 135] [See also Group XIII] The temperature and the humidity o: the air in a cham ber are regulated by a refrigerant evap orator coil E the flow of refrigerant liquid to which i; controlled by an expansion valve set to maintain the pres sure in the coil at either of two selec ted values At the higher pressure nc moisture will be separated from the air while at the lower pressure a desirec portion of the mois ture will be deposited as rime on the coil. The expansion valve comprises a casing containing two valves R<1>, R<2>, the operation of each of which is controlled by an adjustable spring 2 disposed in a bellows 3 subjected internally to atmospheric pressure and externally to the pressure in the evaporator coil. The pressure of the spring 2 on the valve R<2> is greater than that of the corresponding spring on the valve R<1>. In the position shown, the flow of refrigerant liquid from the pipe a through the pipe d<2> is cut off by a valve C, controlled, e.g. by an electromagnet S<1> operated through a switch by a humidistat in the chamber, and the refrigerant flows through the pipe d<1> and past the valve R<1>, which is opened by the pressure of the corresponding bellows and spring, into the casing and thence to the evaporator coil in which it vaporizes at a relatively low pressure and temperature so that moisture from the air is deposited thereon. When the moisture content of the air has been sufficiently reduced, the valve C opens and refrigerant liquid passes through both the pipes d<1>, d<2> and past the valves R<1>, R<2> into the casing. The consequent rise of pressure in the coil and the casing contracts the bellows of the valve R<1> which therefore closes; the valve R<2> remains open since it is more heavily loaded by its spring 2 than is the valve R<1>. In this case, the pressure and temperature in the coil will be relatively high and no moisture will be deposited thereon.
Patent GB-791775-A (GB)
Title: Process for the production of artificial threads and films from viscose
IPC: D01F2/06
Filed: 1955-08-31
Abstract: In the production of artificial threads and films from viscose, from 0.01 to 1 per cent by weight of a condensation product, formed by the reaction of ammonia with an aldehyde containing two or more carbon atoms in the molecule in a 2 : 1 molar ratio, is added to a viscose of gamma value 42 or over, and the viscose is extruded into an aqueous coagulating bath containing 40-65 g./l. of sulphuric acid and over 30 g./l. of zinc sulphate.  Thereafter the threads or films so formed are stretched by 80-120 per cent in a second aqueous bath at about 90 DEG  C. containing 2-10 g./l. of sulphuric acid.  The aldehyde may be acetaldehyde, crotonaldehyde or acrolein and, with ammonia and acetaldehyde, the molar ratio may alternatively be 1 : 1 or, with ammonia and acrolein, it may be 3 : 1.  The viscose preferably contains 7-8 per cent of cellulose and 5-7 per cent of caustic soda.  The coagulation bath preferably contains 160-200 g./l. of sodium sulphate and is advantageously at a temperature of 45-70 DEG  C.  In an example, a viscose containing 7.3 per cent of cellulose, 6.3 per cent of caustic soda and, based on the cellulose, 40 per cent of carbon bisulphide, with an addition of 0.2 per cent of a crotonaldehyde and ammonia condensation product (molar ratio 1 : 2) and having a gamma value of 42, is spun into an aqueous coagulating bath containing 65 g./l. of sulphuric acid, 245 g./l. of sodium sulphate and 50 g./l. of zinc sulphate.  The filaments thus produced are stretched by 90 per cent in a second aqueous bath at 92 DEG  C. containing 5 g./l. of sulphuric acid.  The condensation product may be used without having been isolated from the reaction mixture.  The threads produced have improved resistance to abrasion.
Patent GB-298557-A (GB)
IPC: B60T11/10
Filed: 1928-08-31
Abstract: 298,557. Welti-Furrer Akt.-Ges., A. Oct. 11, 1927, [Convention date]. Fluid-pressure; blocks acting on drums.-In a hydraulic brake for trailer vehicles operated by overrunning of the trailer with respect to the tractor, the cylinder 6 mounted on the trailer and in which works a piston 10 connected to the draw-bar 11 is provided with a sleeve 7 formed with a number of orifices bv which when the piston moves inwardly to apply the brakes, passages of a diminishing total area are provided for the transfer of liquid from one side of the piston to the other. A buffer effect is thus obtained whereby a gradual application of the brakes is effected. The cylinder 6 is connected by a pipe 14 to operating cylinders for the wheel brakes each of which as shown may comprise a pair of internal shoes 18, 19 to one of which the cylinder 21 is pivoted while the piston is connected to the cam 25.
Patent GB-1006989-A (GB)
Title: Improvements in liquid cooling devices
IPC: F25D31/00
Filed: 1964-06-17
Abstract: 1,006,989. Silencing gaseous currents. CLEVELAND TECHNICAL CENTER Inc. June 17, 1964 [June 17, 1963], No. 25110/64. Heading F1B. [Also in Divisions F4 and G3] A silencer for hot gas discharged from a vortex tube (see Division F4) comprises a perforated cylinder 83 divided internally by a partition 85 and surrounded by a casing 80. Hot gas enters cylinder 83 at 81, strikes the partition 85 and passes through the upper perforations 84 into casing 80, whence it returns to cylinder 83 through those perforations 84 below the partition. The gas is discharged at 82.
Patent GB-1422787-A (GB)
Title: Electrically-conducting materials
IPC: F16H55/42
Filed: 1972-05-26
Abstract: 1422787 Pulleys SCIENCE RESEARCH COUNCIL 17 May 1973 [26 May 1972] 25116/72 Heading F2Q  An electrically conductive pulley comprises a metal hub portion 10 and a rim portion having a V-groove 15 at least in part formed by the edges of plates 14 made from a stack of annular laminations cut from sheets of graphite fibre cloth rendered firm by impregnation and setting with plastics material such as urethane monomer. The plates 14 are secured to a central flange 11 by means of aluminium side plates 13 and screws 12.
Patent GB-407057-A (GB)
Title: Improvements in or relating to selective receivers for wave signals
IPC: H03J7/16
Filed: 1932-09-09
Abstract: 407,057. Valve circuits for wireless reception. ROBINSON, J., and BRITISH RADIOSTAT CORPORATION, Ltd., 24, Throgmorton Street, London. Sept. 9, 1932, No. 25221. [Class 40 (v).] In a highly selective receiver the tuning is automatically controlled by means responsive to changes in the frequency of the incoming signals. Fig. 3 shows an arrangement in which energy from the intermediate frequency amplifier 38 is used to control the frequency of the oscillator 37 in a supersonic heterodyne circuit. Piezo-electric crystals 55, 56 are tuned above and below the intermediate frequency used and control detectors 57, 58 which control polarized armature 65 and the operation of relay 63. Relay 63 is adapted to apply prohibitive bias to the amplifier 70 when the signal is below a predetermined amount so that weak signals are suppressed. Fig. 1 shows an arrangement in which the transfer from the tuned circuit 15 to the following valve 17 is through a piezo-electric crystal 16, the resonant frequency of which is adjusted by varying the electrode spacing a balanced condition of the system being maintained by a simultaneous variation of the capacity 21. The control is effected by variation ot the energy applied to valve 25 which is shunted by a piezo-electric crystal 22, tuned to a frequency differing slightly from the signal so that the carrier frequency falls on one of the major sloping portions of the crevasse and decrease of carrier frequency will vary the amount of energy shunted by the piezo-electric crystal in one direction while an increase of this frequency will produce an opposite variation in the amount of energy shunted by the crystal. In a modification (Fig. 2, not shown) the resonantor in the frequency controlling circuit is a tuning fork and the control of the tuning of the receiver is effected by movement of an iron core in a tuning inductance. Fig. 4 shows a modification of the arrangement in Fig. 1 in which the control adjusts a tuning condenser and part of the energy at carrier frequency in the control circuit is applied to the tuned circuit 73 to diminish the percentage modulation so that an improvement in selectivity is produced consequent on the demodulation of weaker signals by stronger signals in the detector 39. In a further modification (Fig. 5, not shown) a pair of piezo-electric crystals are energized in opposite phase by the signals, the crystals are tuned above and below the signal respectively. A supersonic heterodyne circuit is used and part of the output from the crystals is used to control the tuning of the oscillator while the other part of the output is applied to a pair of valves in push-pull. The parallel output from these valves is fed to the succeeding detector of the receiver. Specifications 296,678, [Class 40 (v)], 344,034, 344,869, and 355,339 are referred to.
Patent GB-227189-A (GB)
Title: Improvements in receiving sets for wireless signalling
IPC: H04B1/16
Filed: 1923-10-10
Abstract: 227,189. Turner, J. M., and Soundy, L. H. Oct. 10, 1923. Thermionic amplifiers and detecters. - Valve receiving-sets are operated by alternating or direc current from supply mains &c., and noises due to the alternations or fluctuations are .eliminated by a combination of (1) a smoothing device in the plate supply circuit comprising series chokes and shunt capacities; (2) a potentiometer across the filament terminals with a sliding contact connected to the grid; and (3) a coupling between the anode and grid circuits of the detector valve and means for giving the grid sufficient positive charge to operate at the top bend of the characteristic curve. A composite air-cored and iron-cored choke may be connected in the filament circuit. Fig. 5 shows the circuits for a multi-valve set using alternating supply current, and Fig. 6 the corresponding circuits for direct current. The set comprises a high-frequency amplifier 49, detector 48, and lowfrequency amplifier 50. The supply transformer 38 has three secondary windings, coil 39 supplying the high tension to the plate circuits, coil 41 supplying the valve filaments, and coil 40 supplying the filaments of rectifiers 36, 37. The plate current is drawn from a condenser 42 through chokes 46, 46<1> followed by a shunt condenser 42<1>. The filament current, passes through an air-cored choke 64 and iron-cored choke 64<1> and through separate rheostats to the several filaments. Across each filament is connected a resistance with a tap connection to the grid circuit, condensers being shunted across each section of the resistance. Alternatively the grid circuits can be connected by a lead 65 to a centre tapping on the coil 41. The grid 53 is given a positive charge either by a battery 55 connected to a leak resistance 56, or by a battery 52<1> connected to the grid through the tuned high-frequency circuit 52, 52<1>. In the latter case, the grid condenser 57 is omitted. A coil 62 in the tuned plate circuit of the detector 48 is coupled to the grid coil 52. An air-cored choke 47 wound in sections is connected between the plate of the high-frequency amplifier and the primary coil of the transformer in the detector plate circuit. A condenser 66 is inserted between the aerial inductance and earth. When direct current supply is used as shown in Fig. 6, the filament supply is taken from the mains 74, 75 through a@ adjustable resistance 69, iron-cored chokes 67, 68 and a composite air-cored and iron-cored choke 64, 64<1>. An adjustable tapping 70 on the resistance 69 is connected through a choke 46 to the plates, and smoothing-condensers 72, 73 are connected across the plate and filament leads before and behind the chokes 46, 68. When a fourelectrode valve is used for detection, the inner grid is given a positive charge. and the input oscillations are applied to the other grid.
Patent GB-532549-A (GB)
Title: Improvements in boxes, cartons and like containers
IPC: B65D5/02
Filed: 1939-09-07
Abstract: 532,549. Boxes. WATTS, C. J., and JOHNS, SON & WATTS, Ltd. Sept. 7, 1939, No. 25254. [Class. 18] A box is produced by folding a one-piece blank more than once about parallel scores k, l, l<SP>1</SP> to produce walls each having at least two contiguous plies of material over the greater part of its area, and then folding the blank about scores a, b, c at right angles to the scores k, l, l<SP>1</SP> to bring the walls into tubular form. Some or all of the sides have flaps A to produce the bottom of the box. Slots m may be cut along the scores a, b, c of the inner ply of the walls to facilitate folding of the blank. As shown, the outermost ply of the side walls may be of less height than the inner ply so as to form a shoulder to receive the cover of the box. Alternatively the walls of the inner ply may be shorter than the outer walls so that a box having a recessed bottom is produced. Flaps for forming the box bottom may also be provided at the end remote from the flaps A so that a box having a double bottom is obtained. The interior surface of the box may be covered with tin foil or other metal foil or may be coated with a waterproofing substance. The complete box may be of triangular, octagonal or other prismatic form.
Patent GB-684844-A (GB)
Title: Improvements in or relating to long quadrant bands for self-acting spinning mules and to self-acting spinning mules
IPC: D01H3/00
Filed: 1949-10-03
Abstract: 684,844. Textile spinning mules. SHAW, H. July 28, 1950 [Oct. 3, 1949]. No. 25320/49. Class 120 (ii). A two-part quadrant band for a selfacting spinning mule consists of a rope 1 arranged to wind on and off a scroll 2 and a chain 3 to run over a back-shaft pulley 12. The rope 1 and chain 3 are connected together by a coupling 7 having a split sleeve 8 to receive the rope and a lug 9 to engage the chain. In order to guide the chain 3, the pulley 12 is grooved to accommodate it.
Patent GB-1335494-A (GB)
Title: Circular knitting machines
IPC: D04B15/58
Filed: 1971-04-19
Abstract: 1335494 Knitting-machines G BILLI & C SpA 19 April 1971 [10 April 1970] 25349/71 Heading D1C A yarn feeding arrangement in a circular machine comprises groups of yarn guides 87, 89 at two adjacent feeds mounted on a common axis 85 and controlled by at least one but preferably two coaxial pattern drums. The arrangement is supported by a block 9 pivotally mounted on the machine frame about an axis 7. The pattern drums, one of which 57, is shown are either free on a common axle and independently rocked, or fixed to it and rocked in unison. The, or each rocking arrangement comprises a ratchet 61 fixed to the drum and turned by a pawl 65 pivoted on a member 75. The bifurcated end of the member is oscillated by a lever controlled by a bowden cable. The bits 57B of the drum act on the arms 87B of the guides.
Patent GB-375142-A (GB)
Title: Improvements in water closet pedestal pans
IPC: E03D11/02
Filed: 1931-11-07
Abstract: 375,142. Sanitary closets. PERRIN, G., 118, Treharris Street, Cardiff. Nov. 7,. 1931, No. 25364. [Class 26.] A pedestal closet-pan is provided with an integral base portion A of large area, adapted to rest on a floor or raised platform to support the pan, which is provided at about its centre with a downwardlyextending tubular outlet B for connection with a separate trap. The portion A may be provided with hollows.
Patent GB-798263-A (GB)
Title: Improvements in or relating to mechanical resolving mechanisms
Inventor: TINDALE JOHN
IPC: F16H15/04
Filed: 1954-09-01
Abstract: 798,263. Variable speed friction gearing. ELLIOTT BROS. (LONDON), Ltd. Aug. 29, 1955 (Sept. 1, 1954), No. 25446/54. Class 80 (2). In a mechanical resolving mechanism comprising a ball which transmits motion between an input roller and two output rollers, the lines joining the points of contact of the three rollers and the centre of the ball being mutually perpendicular, means are provided for exerting a force on the ball in a line joining the centre of the ball and a point on the line joining the point of contact of the input roller with the centre of the line joining the points of contact with the output rollers. In one embodiment a ball 11 bears on a ball 12 freely rotatable in a cylin. drical guide 13 and urged against the ball 11 by fluid pressure admitted through an inlet 14 and exhausted through outlet 15. The ball 11 is rotated by a roller 21 on a shaft 20 driven through bevel gears 19, 18 from a driving shaft 17. The shaft 20 is journalled in a sleeve 23 rotatable in a cover 16 by a gear 25 meshing with a further gear on an input shaft also journalled in the cover 16. Two output rollers 28, 29 are in contact with the ball 11 at points lying in the plane of the ball centre, and transmit their rotation'to output shafts 30, 31 respectively. The lines joining the points of contact of the three rollers 21, 28, 29 are mutually perpendicular at the centre of the ball 11, and the line joining the point of contact of the ball 12 with the ball 11 and the centre of the ball 11 passes through the line joining the point of contact of the roller 21 with the mid point of the line joining the contact points of rollers 28, 29. In a modification, Fig. 16, the ball 11 is supported in a part-spherical cup 12a of slightly greater radius than the ball 11 and fluid is forced between the cup and the ball by way of passage 14. In a second embodiment, Figs. 14, 15, two balls 32, 33 of the same size bear on each other and are contacted by input rollers 35 and output rollers 36, 37. The input rollers 35 are driven by bevel gears 39, 40 from cylindrical gears 41 meshing with gear 42 loose on a connecting shaft 43 and gear 52 rigid with that shaft. The gear 42 meshes with a gear 44 and the shaft 43 is formed with a gear 51 meshing with a gear 48, both the gears 44 and 48 are free on an input shaft 45 and are urged into contact by spring 49 with a row of balls 47 carried in an integral flange on the shaft 45 to provide a differential coupling to ensure equal rotational speeds of the gears 41. The input rollers 35 are carried on shafts 38 journalled in cylindrical gears 53 rotated by a shaft 56 through gears 55. The shaft 56 has a collet coupling at 56a to allow adjustment. The two cylindrical gears 41, 53 are journalled in an end cover 57 spring urged towards the casing 34 to provide the force urging the balls 32, 33 and rollers 35, 36, 37 into driving contact.
Patent GB-417353-A (GB)
Title: Apparatus for playing a game
IPC: A63F7/06
Filed: 1933-09-14
Abstract: 417,353. Football game apparatus. LIVIN, L., 25, Rue des Secours, Brussels. Sept. 14, 1933, No. 25500. [Class 132 (ii).] Football game apparatus comprises a table provided with goals and men in the form of pivotable flaps or discs in the surface of the table for projecting a ball. The playing table 1 is surrounded by a projecting border 29 and comprises goals 2A, 2B and sets of men A and B for passing to each other and for shooting at the goals. Each man, Fig. 2, comprises a slightly concave disc 3 fitted in a recess formed in the table, the disc 3 being severed into two unequal portions at the line 30 and the smaller portion being secured in the recess. Cloth 31 of an elastic nature, e.g. furniture spring cloth, is stuck over the table and is cut around the periphery of the larger portion of each disc which is thus pivotable about the line of division with the smaller portion and returnable under the resiliency of the cloth. The table beneath each recess for a disc is provided with a perforation 32 for the passage of a core 33 of a solenoid 34, carried by a support 35 parallel to the table 1. The solenoids are operated by buttons, knobs, &c., formed in keyboards corresponding to the different sides of players. The upward movement of the core is limited by the enlarged end 36 and normally the core rests on the solenoid by a pin 361.
Patent GB-278363-A (GB)
Title: Improvements in and relating to rotary valves for internal combustion engines
IPC: F01L7/02
Filed: 1927-09-27
Abstract: 278,363. Motor Research Co., (Assignees of Roux, 0. R.). Oct. 2, 1926, [Convention date]. Closure members, rotary cylindrical. - In a rotary cylindrical valve plug for four-stroke, engines, compressors, &c., having recesses 3‹‹ arranged in different planes for controlling exhaust and inlet respectively, the exhaust or both recesses are made with an enlarged pocket as shown. According to the Specification as open to inspection under Sect. 91 (3) (a), cooling water or air may be circulated through the valve plug, the air being drawn through by a fan. Also, the invention could be applied to the valves of compressors &c. This subject-matter does not appear in the Specification as accepted.
Patent GB-687662-A (GB)
Title: Improvements in or relating to gas burners
IPC: F23D14/64
Filed: 1949-10-05
Abstract: 687,662. Gas burners. CALVERT, R., and NUTTALL, E. Sept. 29, 1950 [Oct. 5, 1949], No. 25565/49. Class 75(i) In a gas burner of the kind in which a gas jet 10 discharges into a mixing tube 12 having an inwardly tapering intake end leading to a narrow bore 16 and in which the discharge orifice of the jet is located between air inlets 13 in the mixing tube and the entrance to the bore, at least two additional aligned mixing tubes 18, 25 are arranged so as to provide annular air passages 24, 26 leading from air inlets 22, 29 in their walls to bores 20, 27 of less diameter than their intake ends, the outlet of one mixing tube being disposed within or close to the inwardly tapering zone of the next tube, the final mixing tube 25 being of Venturi form and the outlet of the penultimate mixing tube 18 being located just in front of the inward taper of the final tube. The annular air passages 24, 26 converge from the air inlets to the zone where they discharge into the main gas-air stream. The tubes are fitted together spigot-andsocket fashion.
Patent GB-850608-A (GB)
Title: Gas chromatography apparatus and method of separating gas mixtures
IPC: G01N30/60
Filed: 1957-08-13
Abstract: One or more elution-partition gas-chromatography columns are combined with one or more elution-absorption columns by valve means which allow them to operate in series or in parallel.  They may be used for gas analysis.
Patent GB-322499-A (GB)
Title: Improvements in slitting means
IPC: B26D7/26
Filed: 1928-09-06
Abstract: 322,499. marks, Sir G. C., (Cameron Machine Co.). Sept. 6, 1928. Flexible shafts; universal joints.-In a machine for slitting a paper web, coacting shearing-discs 1, 2 are mounted on geared shafts 30, 300 driven from a pulley 7. To prevent whipping, the shafts are made in sections supported by adjustable bearings 5 and connected by flexible couplings 6. The shaft 300 is supported in the frame by screws 17. In a modification, Fig. 3, not shown, two shaft sections are joined by a flexible coupling and the shafts adjacent the couplings are supported by bearings. In a further modificition, the shaft is divided into three sections. The shafts may be connected by a coupling as shown in Fig. 6, in which internal teeth 6b, on a member 6<a> carried by a shaft 3<b>, co-operate with cantilever springs 6<c>, on a member 6<d> on a shaft 3<a>.