baber/WOPTO huggingface dataset:
Patent GB-1079449-A (GB)
Title: Improvements in and relating to electric transformers
Inventor: HEIGHES JOHN
IPC: H01F27/00
Filed: 1963-05-22
Abstract: 1,079,449. Transformers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 30, 1964 [May 22, 1963], No. 20437/63. Heading H1T. In an electric transformer, windings 2, 3 which are mounted on a magnetic core 7 are completely enclosed in, and separated from the core 7 by, an envelope which comprises outer and inner walls 5, 6 and which contains cooling fluid, the envelope being arranged in a tank containing a second cooling fluid and being connected by a pipeline to a pump and heat-exchanger located externally of the tank. The envelope may be at least partly made of insulating material such as synthetic resin-bonded glass fibre material or may be constructed so that the outer and inner walls 5, 6 as well as the end walls comprise alternating portions of electrically conducting material such as aluminium or steel and electrically insulating material. The transformer is assembled on site by connecting stepped yoke portions of three laminated cores 5 each provided with enveloped windings which may be surrounded by dry gas during transportation to the site. The windings may be subjected to high vacuum drying and impregnation before the cooling fluid which may be oil is circulated in the envelopes. The tank which houses the envelopes and which may be of concrete and may be noise-proof and/or weather-proof is filled with air, carbon dioxide, water or oil which may be circulated. Extension portions (7, 8) (Fig. 7, not shown) may be provided in the transformer to support terminals and tap changers.
Patent GB-912572-A (GB)
Title: Improvements in or relating to valve devices
Inventor: BARTLETT LESLIE ROBERT
IPC: F16T1/08
Filed: 1960-06-10
Abstract: 912,572. Steam traps; temperature-responsive actuating-elements. SPIRAX-SARCO Ltd. June 1, 1961 [June 10, 1960], No. 20516/60. Class 64 (2). [Also in Group XXIX] In a valve device for permitting the escape of condensate or air from a steam chamber, an operating member is subjected, in the valve closing direction, to a force applied thereto by temperature-responsive means via spring means and in the valve opening direction to a force dependent on the pressure of the fluid in the chamber. The valve operating member 10 which carries a valve head 11 at its lower end is mounted in the central bore of the valve body 2, the bore widening at its lower end to form a chamber 18 which communicates with the steam chamber 5 through a duet 9. A set of bimetallic discs is loosely mounted around the upper end of the member 10 and is surmounted by a spring 13 and nuts 14, the former comprising two dished discs 15 and 16 having a ring 17 between them to limit the extent to which the spring may be compressed. With increasing temperature the expansion of the discs 12 tends to lift the member 10 towards the closed position while increasing pressure within the chamber 5 tends to force the member downwardly towards the open position against the spring 13 and discs 12. In the pressuretemperature graph, Fig. 3, the lines 20 and 21 of different slope represent the values of temperature and pressure at which the valve opens, the point 22 at which they intersect corresponding to that at which the spring 13 becomes fully compressed. It will be seen that the lines approximately correspond to the curve 19 of temperature against saturation pressure.
Patent GB-1156056-A (GB)
Title: Method and Apparatus for Adding Moisture to a Pre-Conditioned Web of Paper.
Inventor: WHITTAKER JACK DEARDEN
IPC: D21G7/00
Filed: 1967-05-03
Abstract: 1,156,056. Humidifying paper webs. GREENBANK ENG. CO. Ltd. and EASTON & JOHNSON Ltd. 22 April, 1968 [3 May, 1967], No. 20524/67. Heading D1L. A paper web D is humidified bypassing into contact with a drum A, having internal cooling channels, onto which is directed humidified air from nozzles F1-6. A continuous band E presses the web into contact with the drum A.
Patent GB-837257-A (GB)
Title: Improvements in telephone exchange circuit arrangements
IPC: H04Q3/52
Filed: 1958-06-26
Abstract: 837,257. Automatic exchange systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. (Philips Gloeilampenfabrieken N.V.). June 26, 1958, No. 20539/58. Class 40 (4). In an exchange in which a speech path is set up over cold cathode discharge tubes, current in 'the path is absent, small, or large as the path is idle, to be extinguished, or busy, and this current controls two circuits, one of which conducts only when the path is idle and the other of which conducts only when the path is busy, neither circuit conducting when the path needs extinction and in this condition causing an extinction generator to operate. As illustrated, when subscribers S1 and S2 have closed loop circuits, conduction through tubes T1 and T2 takes place over resistors 14 and 15 and over rectifiers 9 around the subscribers' loops as well as through resistors 10. When both subscribers have hung up and the loops are broken, rectifiers 9 are disconnected and reduced conduction takes place over resistors 102. The reduced current through resistors 14 and 15 provides potentials such as to hold both transistors 33 and 34 cut-off so that current drawn over the combinations 26, 27 and 30, 31 of non- linear and linear resistors holds both junction points 22 and 24 at earth and allows a capacitor 16 to discharge. A cold cathode tube E breaks into oscillation when capacitor 16 is discharged and over junction 12 extinguishes tubes T1 and T2. With no current drawn by T1 or T2 over the chain 14, 15, transistor 33 conducts and the potential of point 22 rises to charge capacitor 16 and hold tube E inactive. With T1 and/or T2 conducting fully over a subscriber's loop circuit, transistor 34 conducts and the potential of point 24 holds E inactive. The transistors may be replaced by cold cathode tubes.
Patent GB-239193-A (GB)
Title: Apparatus for filling lubricating pumps specially those used in the lubricating systems for motor cars or other mechanisms
IPC: F16N37/02
Filed: 1925-08-17
Abstract: 239,193. Zimmermann, F. Aug. 29, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Hand devices for filling tubes.- Apparatus for filling grease guns, especially those employed with the grease - lubricating systems of motor-cars and other mechanisms, comprises a semi-cylindrical body a adapted to be used as a shovel to remove grease from a container, and a transverse disc d secured to a rod c provided with a handle e and guided by a tubular portion b of the body a so that when the charged body a has been inserted in the gun, the disc d may be pressed down thereon and the body a be withdrawn leaving its charge in the gun. A projection d<1> on the disc d is adapted to engage the gun to facilitate the operation.
Patent GB-410144-A (GB)
Title: Improvements in or relating to the production of vegetable fibres
IPC: D01C1/02
Filed: 1932-08-11
Abstract: 410,144. Obtaining fibres. TIRAFERRI, L. R., 33, Via Castiglione, Bologna, Italy. Aug. 11, 1932, No. 20629/33. [Divided on 408,007 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 13, 1932.] [Class 120 (i).] Fibres are obtained from flax, flax-straw, waste hemp, ramie, nettles, Jerusalem artichoke, palm-leaf, cactus, coco-nut fibres, sisal, jute and the like by spraying with a bactericide or germicide, then softening, willowing or shaking the material, and subsequently spraying with an aqueous solution of oil and water containing a bactericide or germicide, e.g. bichloride of mercury. A suitable oil is olive oil, preferably that obtained from the second pressing. The material may be subjected to a preliminary treatment comprising soaking in water, with or without a bactericide, and then drying, e.g. at 95‹ F. In an example, deseeded Canadian flax straw is dried at 95‹ F., and lightly sprayed with a solution of 30 gms. bichloride of mercury to 1 gallon of water. The material is passed twice through a crimping machine and then shaken and scutched. The fibre is then spread out and sprayed with a mixture of 1 part of olive oil to 3 parts of boiling water, containing some bichloride of mercury. The resulting material may be carded, spun &c. Specification 408,007 is referred to.
Patent GB-1237540-A (GB)
Title: Improvements in or relating to static vents in aircraft or parts thereof
IPC: B64D43/00
Filed: 1968-05-02
Abstract: 1,237,540. Aircraft static vent. AVIMO Ltd., and P. J. WINGHAM. 28 April, 1969 [2 May, 1968], No. 20800/68. Heading B7W. [Also in Division G1] The smooth aerodynamic shape of an aircraf is modified locally in the region of a static vent 2 in order to compensate for errors of pressure arising with speed The modification is in the form of a bulge or bump 1 separably attached to the aircraft. The bulge may be of oval shape, Fig. 4 (not shown).
Patent GB-421956-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/36
Filed: 1934-07-16
Abstract: 421,956. Screw fans. ELECTROLUX, Ltd., Luton.-(Assignees of Inventia Patent- Verwertungs-Ges. ; 10, Herrenacker, Schaffhausen, Switzerland) July 16, 1934, No. 20802. Convention date, July 19, 1933. [Class 110 (i)] The supply of air for the screw fan of a vacuum cleaner is maintained while the nozzle is pressed against a carpet by means of ejectors which cause air to recirculate through the fan. Surrounding the fan is a shell 23 which carries the ejectors. While the nozzle is open, air is drawn through a spring-pressed valve 19. When the nozzle is obstructed, the valve 19 closes and air is drawn through the ejector nozzles 29 from a passage 30 surrounding the bag 13. The suction causes air to recirculate through passages 23<1>, 28. The ejector nozzles may be mounted as valves. In a modification a central ejector is provided.
Patent GB-1532708-A (GB)
Title: Process for the preparation of matted photographic layers containing gelatine
IPC: G03C1/95
Filed: 1976-05-20
Abstract: 1532708 Hardening gelatin AGFA-GEVAEBT AG 20 May 1976 [22 May 1975] 20865/76 Heading C3H [Also in Divisions B2 and G2] In a process for the preparation of matted photographic layers, using hardened gelatine particles as matting agent, gelatin particles dispersed in a water-in-oil emulsion containing a non-polar solvent as organic phase in the presence of an emulsifier and of a hardener are hardened, the hardened gelatin particles are separated from the emulsion and redispersed in water and the aqueous dispersion so formed is added to the casting composition of the layer which is to be matted, the quantity added being calculated so that its proportion of the dry weight of the layer is not greater than 50% by weight, and the casting composition is applied to a substrate and dried. The emulsifier preferably has an HLB (hydrophileliphophile balance) value of 3 to 8.
Patent GB-169322-A (GB)
Title: Improvements in and relating to the manufacture of briquettes
IPC: B30B11/00
Filed: 1920-07-12
Abstract: 169,322. Armstrong, J. July 12, 1920. Addition to 1188/14. Endless-chain machines; cooling-apparatus; heating-apparatus; feeding; moulds; moulding fuel.-The co-operating pair of mould chains described in the parent Specification are each furnished with half-mould elements adapted to interlock automatically with one another as the chains move together, and are also subjected to a cooling operation prior to separation. Each half-mould element is furnished with a projection y and recess a adapted to interlock, as shown in Fig. 2. The chains m, Fig. 1, pass beneath hoppers b furnished with stirrers g and move together through a flue heated by burners n. A stream of cooling air is directed on to the moulds, prior to their separation, through flues s controlled by valves u, u<1>.
Patent GB-888511-A (GB)
Title: Improvements relating to chain shifting and tensioning mechanism for bicycles and the like
Inventor: EVERILL ARTHUR ROLAND
IPC: B62M9/1248
Filed: 1959-06-18
Abstract: 888,511. Chain-shift change-speed gears. CYCLO GEAR CO. Ltd. Sept. 13, 1960 [June 18, 1959], No. 20902/59. Class 80 (2). Chain-shift change-speed gearing for bicycles comprises a pivoting bracket 20 attached to the frame of the bicycle and supporting two arms 16, 17 of a parallelogram linkage mounting at its end a carrier 21 within which is a torsion spring 29, Fig. 4, biasing a jockey roller &c. lever 26 in a direction to tension the drive-chain, the torsion of the spring being manually adjustable at the exterior of the carrier. The lever 26 is fast with a pin 24 which can rotate within a sleeve 25, rigid with the body of the carrier 21, a bolt 33 being screwed into a tapped hole at the end of the pin. One end 30 of a coiled spring 29 is fast with the body of the carrier 21 and engages at its other end a sleeve 28 having an apertured end coacting with the head of the bolt 33 and prevented thereby from turning. If the sleeve 28 is pushed leftwards of Fig. 4 out of engagement with the bolt 33 by hand, it can then be twisted to adjust the bias of the spring 29, allowing the sleeve to move back to the position shown, so that it engages the bolt head retaining the sleeve in its newly adjusted position. The arm 17 of the parallelogram linkage is biased by a spring 35, Fig. 1, against the action of a Bowden control cable 37 in a direction to engage the drivechain with the smallest of the nested driven sprockets 9. The bias of the spring 35 may be adjusted by mounting it on a pin having a non- circular end engaging in a similarly-shaped hole in the pivot bracket 20, Fig. 6 (not shown), or by mounting it on a pin which can be retained in a desired angular position by means of a lock-nut, Fig. 7 (also not shown). The end of the Bowden cable 37 is secured to an arm 41, Fig. 2, fast with the arm 16, the arm 41 coacting with spring- retained adjusting screws 42, 43 to limit the transverse ratio establishing motion of the linkage &c. The bracket 20 pivots freely in the direction away from the drive-chain, its motion in the opposite direction being limited by an adjustable stop-screw.
Patent GB-382303-A (GB)
Title: Improvements in and relating to the casings of dynamo-electric machines
IPC: H02K1/18
Filed: 1931-07-22
Abstract: 382,303. Dynamo-electric machines. EVANS, W. E., 27, Chancery Lane, London. - (Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) July 22, 1931, No. 20992. [Class 35.] Frames; cores.-A casing frame for a dynamoelectric machine consists of longitudinal bars a, retaining rings f, and if necessary a protecting cover m, the bars being recessed at b in order to receive and clamp together the stator laminae c. The laminµ are held between pressure plate d which are not secured to the bars. The bars a extend over the end coils r for a sufficient distance to ensure that the spacing of the feet secured to the rings f will correspond to the spacing in the case of machines with cast frames. Cover-plates e are centred in and secured to the rings f. The external diameter of the rings is greater than the overall distance between any two oppositely disposed bars so that air can flow circumferentially as well as axially. Holes o may be provided in the bars to increase the circumferential flow. The rings f which may be of L, T, or other cross section, may have holes to allow egress of air in the axial direction. In the case of a motor which is to be secured with an end face against a wall &c., one of the retaining rings is constructed in the form of a flange of large diameter.
Patent GB-780261-A (GB)
Title: Improvements in or relating to stapling tools
IPC: B25C5/02
Filed: 1954-07-20
Abstract: 780,261. Stapling. ASHWELL, N. W. July 15, 1955 [July 20, 1954], No. 21063/54. Class 89(3) A stapling tool consists of a base 10, Fig. 1, to which is pivoted, a driving arm 54 supporting a driving blade 35, a magazine 22 of open-topped form, and a magazine cover 46 detachably connected to the arm 54 by a screw 57. A leaf spring 58 between the arm 54 and the cover 46, and a spring loaded plunger 60 between the magazine 22 and the base 10 return these members into positions spaced from each other, after each driving operation. The cover 46 is retained in operative position over the magazine 22 by a slidably releasable latch 51 on the cover which engages under lugs 50 on fingers 49 extending upwardly from the magazine 22. Within the magazine 22, which is formed by an upwardly open channel, a core member 23, Fig. 3, also of upwardly open channel form, defines a passage 28 for the legs of the staples 30. A rod 40 passing axially through the core member carries a compression spring 44 which acts upon a staple feeding plunger 31 guided by apertured lugs 43 upon the rod 40. The side walls of the magazine adjacent the front edge are provided with inwardly inclined portions 38, Fig. 5, which retain the staples in position on the core member 23. The driving plunger 35 has a central rib 34 which co-operates with an opening formed in the front end of the magazine. A rotatable anvil 16 carried by the base 10 can be selectively engaged in either one of two positions spaced 180 degrees from each other in which surfaces on the anvil co-operate with the legs of the staple to turn them either inwardly or outwardly. The magazine 22, cover 46 and driver 54 can be pivoted to a position in which they project rearwardly of the base so that the tool can be used for driving staples into a surface, such as a notice board.
Patent GB-1343188-A (GB)
Title: Preparation of methylol melamines and etherified methylol melamines therefrom
IPC: C07D251/64
Filed: 1971-04-19
Abstract: 1343188 Methylol melamine ethers CHEMISCHE FABRIK PFERSEE GmbH 19 April 1971 [5 Feb 1970] 21165/71 Heading C2C [Also in Divisions C3 and D1] Methylol melamines are prepared by heating 1 mol. of melamine in the presence of alkali and without added water with 2-6 mols. of paraformaldehyde in 0.4-1.2 mols. of a C 2-6  dihydric or trihydric alcohol, the reaction medium when diluted with 10 times its weight of water having a pH or 8-10, and up to 60% by weight of the polyol being optionally replaced by at least an equal weight of a C 1-3  monohydric aliphatic alcohol. The products may be etherified by continuing the above process until a clear or opalescent solution is formed, etherifying the result with acid in the presence of excess C 1-3  alkanol, neutralizing the product and optionally distilloff excess alkanol. In the examples 2 mols. of melamine are mixed with 1.4-2.4 mols. of ethylene glycol (with and without methanol in addition), propylene glycol, diethylene glycol, dipropylene glycol or glycerol, and 5-10 mols. of formaldehyde; the mixture is adjusted to pH 9-10 with NaOH, KOH, Na 2 CO 3  or Et 3 N and heated at 86-120 C.: the cooled mixture is heated at 50-65 C. and pH 5.3-6.2 (adjusted with HCl, H 2 SO 4 , maleic anhydride, or trichloracetic acid) with methanol, ethanol, or propanol. Uses.-Textile crease-resistant finishes.
Patent GB-1534959-A (GB)
Title: Filter apparatus
IPC: B01D29/00
Filed: 1976-05-21
Abstract: 1534959 Filter belt apparatus J A NEGUI and M A NEGUI 21 May 1976 21217/76 Heading B1D A filter apparatus comprises a filter belt 1 which travels continuously or intermittently in a tank and is supplied with suspension via supply means 11, and an outlet chamber 3 downstream of the belt 1 and having at least one of its side walls formed by a filter panel 4 for use should the belt 1 break, the chamber containing a float-operated switch 5 which is actuated to cut off the flow of suspension through means 11 if the level of solids in the chamber 3 reaches a predetermined level. The apparatus may include vanes (7) (Fig. 1, not shown) carried on endless chains (6) for scraping solids from the bottom of the tank. An overflow channel 2 may be adjacent each edge of the belt. Seals may be provided adjacent the edges of the belt.
Patent GB-1302883-A (GB)
IPC: B21D28/22
Filed: 1971-04-19
Abstract: 1302883 Punching L SCHULER GmbH 19 April 1971 [24 Jan 1970] 21293/71 Addition to 1302882 Heading B3W In the notching press for producing stacks of laminations for conical armature motors of the parent Specification 1,302,882 means are provided for adjusting the magnitude of at least one of displacement increments independently of the programming device. The adjustment may be made by adjusting one or more mechanical stops or altering the position of the fulcrum of a lever and may be made manually, electrically or by fluid-actuated means. The displacement increments are preferably provided by a ratchet-wheel and pawl mechanism. The stroke of the pawl may be varied by interposing a selected one of a plurality of stops in the path of a single stroke-producing means. Alternatively, two stroke-producing means are used singly or in tandem. In a preferred embodiment one stroke-producing means has an adjustable stroke which gives the basic increment and two other stroke-producing means each have a fixed stroke and are selectively or simultaneously operated to produce small corrective steps. As shown, Fig. 2, a drive shaft 205 rotates a saddle-stock shaft which supports lamination blanks and is screwed to spindle (201) (Fig. 1, not shown), to vary the punching diameter incrementally of successive blanks. A friction clutch 227-229 driven by an electric motor via a worm-wheel 230 prevents damage when the saddle-stock is run against a stop at the beginning of a notching operation and allows the shaft 205 to be driven by a ratchet-wheel 207 when the electric motor is not operating. A rocker 208 rotatably mounted on the shaft 205 has a spring-loaded pawl 210 pivoted at 231 to one end and a threaded rod 233 pivoted to the other. The pawl may be moved clear of the ratchet-teeth by a ram 212 if the shaft is to be driven by a hand-crank (206) (Fig. 1) or by the electric motor. A piston-rod 214 is screwed into the rod 233 and the stroke of cylinder 215 is variable by adjustment of a sleeve 217 along the rod. The cylinder is pivoted to an end of a lever 218 to the other end of which is pivoted the piston-rod 235 of a cylinder 221. The cylinder 221 is screwed to a cylinder 220, the piston of which is pivoted on the machine frame. The stroke of the cylinder 215, which gives the basic feed increment, having been determined by positioning the sleeve 217, one of the pistons of cylinders 220, 221 is retracted and the other is extended to maintain the lever 218 stationary. To vary the basic increment one of the pistonrods 235 or 236 is moved-advancing the one that was retracted increases the feed increment and vice versa.
Patent GB-510296-A (GB)
Title: Cross-talk measuring and correcting apparatus
IPC: H04B3/32
Filed: 1938-07-18
Abstract: 510,296. Cross-talk measurements. STANDARD TELEPHONES & CABLES, Ltd. (Western Electric Co., Inc.). July 18, 1938, No. 21304. [Class 37] Cross-talk measurements are effected by applying a current of one frequency to the near end of one conductor pair, and simultaneously applying to the near end of another conductor pair another frequency differing from the other by an audible frequency, measurement being made at the remote ends of the conductors and the pairs being balanced to reduce the cross-talk. As shown, a 50 kilocycle oscillator 11 supplies the pair A, and a 51 kilocycle oscillator 12 the pair B, the received energy passing through variable attenuators 17, 18 to modulators 21, 22 with which are associated oscillators 23, 24. The oscillators 23, 24 are adjusted to give zero beat with the applied frequencies, the intermodulated components of 1000 cycles being fed to band pass filters 27, 28, and thence through high-gain amplifiers 31, 32 to balance indicators 33, 34 which may be telephone receivers or rectifiers connected to a milliammeter, or a double-pole switch and telephone receivers can be employed. Calibration is effected by reversing the connections to the attentuators 17, 18 and varying potentiometers 31, 32 until balance is obtained in respect of the two 1000-cycle components. The amount of adjustment indicated by admittance bridge 40 can be inserted by panels carrying balancing units as described in U.S.A. Specifications 1,863,651 and 2,008,061.