baber/WOPTO huggingface dataset:
Patent GB-553192-A (GB)
Title: Improvements in electro-magnetic slip couplings
IPC: H02K49/02
Filed: 1942-01-28
Abstract: 553,192. Electromagnetic clutches. ENGLISH ELECTRIC CO., Ltd., CARNEGIE, H. S., and AYRES, W. E. M. Jan. 28, 1942, No. 1204. Addition to 544,941. [ Class 35] An electromagnetic slip coupling has various arrangements for decreasing or eliminating the reduction in magnetic flux. due to the secondary current reaction, which occurs when the slip increases. In one form, the magnetic system is saturated, so that the flux is unaffected by changes in the secondary current. In another, the primary element 4a, Fig. 1, has two spatially displaced windings, one of which is fed through resistance 14 with a constant current from shunt-excited generator 11, while the other is fed through resistance 15 with a current dependent on the secondary current, through transformers 10 and rectifiers 8. This second component wholly, partially or over-compensates the secondary reaction flux. The primary element may have either a distributed drum winding, or salient poles ; the secondary has sliprings connected to fixed or variable resistance 5. Finally, in the form shown in Fig. 2 a bucking or boosting exciter 7 is connected in series with the primary winding and the field winding 7a of this exciter is in series with a sub-exciter 12 running on the output shaft. A rectifier 13 is in series with the winding 7a so that excitation occurs only if the voltage generated by 12 exceeds the supply voltage. The result is that the exciter 7 is effective only over a certain range of slips, e.g. up to a predetermined maximum. The rectifier 13 may be omitted if the exciter 7 is of the kind in which saturable shunts divert flux from the field magnets until a predetermined excitation is reached. Where the control does not depend on secondary current, the secondary member may be a squirrelcage or of the unwound type. Specification 517,468 is referred to.
Patent GB-230586-A (GB)
Title: Improvements in and connected with refrigeration systems in which gases are liquefied by compression and the liquid evaporated
IPC: F25B40/02
Filed: 1924-01-16
Abstract: 230,586. Brettell, W. G., and Adamson, A. J. Jan. 16, 1924. Refrigerating, compression machines for.-The liquefied gas after leaving the condenser 1 is further cooled in a concentric-tube interchanger 3 by some of the brine that is cooled in the evaporator 2 of the plant, and passes under the full condenser pressure to the expansion valve 15. The interchanger may comprise lengths of double tube 16 connected by bends 13 and branches 17, or lengths of triple concentric tube. The brine for the interchanger is preferably taken from the header 7 supplying the brine circuits of the refrigerating-chambers, and returns to a tank or header 8. The brine circulation is effected by a pump 4. The interchanger 3 may be placed in a brine tank. Reference has been directed by the Comptroller to Specificafions 11177/96, 118,866, and 190,615.
Patent GB-709236-A (GB)
Title: Improvements in or relating to electrical lead-in arrangements
Inventor: FLOOD HARRY GUY
IPC: H01J5/32
Filed: 1952-01-16
Abstract: 709,236. Mounting terminals; glass-metal seals. MULLARD RADIO VALVE CO., Ltd. Jan. 16, 1952, No. 1256/52. Classes 36 and 38(1). A method for making an electrical connection through a glass wall 5 comprises welding a tungsten wire 1 to two platinum lugs 2 and 3 and welding these lugs to a platinum sheet 4 of large surface area. A glass bead indicated at 7 is provided on the wire and the whole assembly then sealed into an aperture in the wall, the sheet 4 lying flush with the wall surface 6. One embodiment Fig. 2, (not shown) describes a short nickel stud welded between the sheet and the wire, the lugs being then omitted; in another embodiment Fig. 3, (not shown) the sheet 4 is welded to the curved surface of the wire and then folded over the end, .the method of sealing being the same for all three embodiments. These methods are employed particularly for providing a connection to a conducting coating on the right-hand side of the wall 6. The invention is applicable to the electron optical converter tube described in Specification 709,192, [Group XL(a)].
Patent GB-225412-A (GB)
Title: Improvements in fine adjustments for microscopes
IPC: G02B21/24
Filed: 1924-01-18
Abstract: 225,412. Alldridge, R. S., and, Chapman, W. Jan. 18, 1924. Microscopes.-The fine adjustment of a microscope is effected by means of a cone C driven in the direction of its axis by a micrometer screw S. The cone C has on its surface a screw thread of the same axial pitch as that of the thread S and engages either a portion of a nut or a V-shaped roller at the end of a lever L pivoted to the limb of the microscope. The other end of the lever L supports the microscope tube through a pin P held in contact with the lever by a spring.
Patent GB-386121-A (GB)
Title: Improvements in springs for seat, seat back and similar cushions
IPC: A47C23/30
Filed: 1932-01-18
Abstract: 386,121. Spring seats. DEBELLE, L., 145, Chaussee, Jolimont lez Haine St. Pierre, Belgium. Jan. 18, 1932, No. 1484. Addition to 282,822, [Class 52 (iv), Upholstery &c.]. [Class 52 (iv).] In a spring seat as claimed in the parent Specification the ends of the upper spring blade a are curved inwardly. The ends of both the upper and lower springs are mounted in connecting links f pivoted to the seat frame. Leaf spring friction damping means may be interposed between the upper and lower springs at their point of contact and the upper spring may be curved reversely to produce a spring edge effect.
Patent GB-1529341-A (GB)
Title: Digital switching centre
IPC: H04Q11/04
Filed: 1976-01-12
Abstract: 1529341 Multiplex pulse code signalling POST OFFICE 12 Jan 1976 [14 Jan 1975] 1521/75 Heading H4M A TDM exchange includes a receiver on each incoming 32 channel PCM highway comprising a regenerator, 30, a series to parallel converter 33, a buffer store 300 of capacity 8 bits, and a main store 13 having an 8 bit location for each of the 32 time channels, and the receiver is arranged such that information is transferred into buffer store 300 under the control of clock pulses derived from the incoming bit stream whereas transfer from the buffer store 300 to the main store 13 takes place under the control of one of two exchange clock pulse trains P1, P2, there being means comprising unit 306 for switching from one pulse train to the other to prevent simultaneous reading and writing operations of the buffer store 300. The pulse trains P1, P2 are separated in time by a period of half a time slot. The stores 13 of different highways may be interconnected by a space switch in the manner disclosed in Specification No. 1,398,519.
Patent GB-488666-A (GB)
Title: Improvements in and relating to regenerative breathing apparatus for protection against fumes, powders and noxious gases
IPC: A62B7/08
Filed: 1937-01-19
Abstract: 488,666. Breathing apparatus. REGNAULT, H. A. M. Jan. 19, 1937, No. 1643. [Class 81 (ii)] In regenerative breathing-apparatus, wherein a regenerator cartridge, replaceably held in a casing, contains oxygen-generating material, such as a mixture of oxylith and pumice powder, and also carbon dioxide absorbent such as soda-lime, means are provided for passing a predetermined proportion of the exhaled air through the first material and subsequently through the second, and for passing the remainder through the carbon dioxide absorbent only. As shown, the cartridge 18, Fig. 8, enclosed in a casing 13 and having oxylith-pumice mixture enclosed between gauzes 24, 25, and soda-lime above the gauze 25, is provided with a tube 29 immediately beneath, but spaced from the cartridge inlet 7, by an amount fixed by soldering the tube to the gauzes, a dual path, respectively through both materials, and through the soda-lime only, being thus provided, to the exit tube 8 for the respired gases. Gauzes 31, 32 surround the tubes 7, 8. The casing 13 is open at the bottom for the insertion of the cartridge and is perforated on its upper surfaces and provided with a corrugated metal liner at 17 to assist cooling. The cartridge is sealed by metal discs 33, ruptured by teeth 15 on the tubes 7, 8, on insertion into the casing, and is held in place by a bail 19 engaging a bridge piece 14a, one of these being resilient. The cartridge may also be held before unsealing in a lower position by a lug on the front wall thereof engageable with an indentated leaf spring mounted on the inner wall of the casing and retractable by an external knob. The apparatus described is used in connection with a gas-proof upper garment 1, Fig. 1, having a windowed head covering 2 mounted over a wire frame 3 resting on the shoulders, and sealed at waist and wrists. The tube 8 communicates with a breathing- bag on the back or with the interior of the garment which serves as a breathing-bag, and in the latter case contains a spring closed valve with a tail-rod 35, Fig. 8, engaged by the canister on insertion to hold the valve open. Alternatively the tube 8 contains a handoperable cock 37, Fig. 1. Tube 7 receives exhaled air through a tube 12 within the garment, connected to the mouth and containing a non-return valve. The garment carries near the mouth an air-filter 6 communicating with the atmosphere. When the canister is not in operative position tube 8 is closed by the spring valve or by the cock 37, and the wearer can inhale through the filter 6, and exhale through the valve in tube 12, and tube 7.
Patent GB-1094016-A (GB)
Title: Device for pressing trousers
IPC: D06F71/40
Filed: 1966-01-13
Abstract: 1,094,016. Ironing presses. M. BOHLER and F. WEBER [trading as BOWE BOHLER & WEBER KOMM-GES]. Jan. 13, 1966 [Jan. 21, 1965], No. 1719/66. Heading D1A. The plates 1, 6 of a trouser pressing device have at one edge a recess 2 which, remote from the edge, fits the crotch seam and waist band of the smallest trousers to be pressed as at 12, 16, 17 and widens towards the plate edge to correspond to the waist band size of the largest trousers to be pressed. Trousers to be pressed are placed on lower plate 1 with the upper sections of the trousers located in the zone of recess 2. A flat ironing body 5 with a corresponding recess 4 is swung down on to the lower trouser leg and the upper trouser leg rests on top of body 5. Plate 6 with a recess corresponding to plate 1 is swung down on top. A waist-band tensioning device 25 comprises tensioning frame 26 carried on a head 27 retained on a plate 35 by pins 36. Plate 35 is pivoted to an arm 31 pivoted to an arm 30 pivoted at 33 to the sub-frame 34 of the press. Instead of pins 36, plate 35 may have a short shaft or pipe stub 39 which fits a recess 38 or a projection having a recess and these parts, as well as forming a pivot, are formed as coupling parts to connect a blowing device in the head 27 to a pipeline 40 for steam and/or air. Pipe line 40 may be guided through arms 30, 32 or these may form the pipeline.
Patent GB-1260722-A (GB)
Title: Improvements in physical development in an image reproduction process
IPC: G03C5/56
Filed: 1969-01-10
Abstract: 1,260,722. Physical development of non-silver images. MINNESOTA MINING & MFG CO. Jan. 10, 1969 [Jan. 11, 1968; Feb.7, 1968], No. 1734/69. Heading G2C. [Also in Division C7] An image reproduction process comprises exposing a photo-sensitive layer of a photosensitive medium to a light image, the said layer comprising a composition which upon light exposure directly generates nuclei of a metal which is more noble than silver (i.e. metals which are less readily oxidized than silver) and is catalytic to the electroless deposition of a non-noble free metal, and providing non-noble free metal selectively on these nuclei by electroless deposition to provide a visible print of the light image, the photo-sensitive layer having incorporated therein or in contact therewith prior to exposure to the light image at least one salt of bismuth, antimony, lead, tin or, when the nuclei more noble than silver are not formed from a gold salt, silver or gold and/or after exposure the non-noble free metal in the presence of at least one salt of bismuth, antimony, lead, tin, titanium, tungsten or chromium being selectively provided on the nuclei. The non-noble free metal is preferably nickel and/or cobalt, and the metal which is more noble than silver is preferably palladium. The salts referred to above may be gold chloride, silver nitrate, bismuth trichloride, antimony trichloride, lead acetate, tin tetrachloride, sodium tungstate, chromium chloride or chromium fluoride. In the examples the light-sensitive entity is ferric ammonium oxalate/palladium chloride or ferric ammonium oxalate/ammonium chloropalladate. This process provides a continuous tone image reproduction.
Patent GB-747117-A (GB)
Title: Improvements relating to the filleting of fish
IPC: A22C25/16
Filed: 1954-01-20
Abstract: 747,117. Filleting fish. BAADER, R. G. T. Jan. 20, 1954 [Jan. 20, 1953], No. 1736/54. Class 28(2). Gutted and beheaded white fish are cut into fillets free of bones and fins by first making two cuts on each side of the backbone but not through to the back as in Fig. 2, and then making successive cuts as in Figs 7 and 8 right through to the back so that the back fin bones remain adhered to the now separated backbone. The gutted fish in troughs 4 are conveyed past beheading knives 8 and are displaced by 10 on to a table 16 and under a feeler 18 so that the tail is gripped by grippers on a rotary drum and pulled round past various cutting tools 20, 22, 24, 26 and 28. When the feeler 18 drops off the fish as it is pulled it actuates cam mechanism 19 to move in to the fish, the various cutting tools in accordance with the length of the fish as in Specification 676,814. The sequence of operations are : Fig. 2, cutting fillet away from backbone for a length of vent to tail only by disc knives 40 ; Fig. 3, disc knives 42 cut off the belly strips along line 44, Fig. 9, against belly support bars 50; Fig. 4, inclined disc knives 52 cut the flesh away from the ribs ; Fig. 5, knives 54 sever the ribs which drop away, and cut partly past the backbone ; Fig. 6, an abrasive disc cleans the belly walls ; Fig. 7, a single disc knife 58 cuts the fillet right beyond the backbone and Fig. 8, the knife 62 cuts similarly on the other side, leaving a strip of flesh which contains the dorsal fins. Specifications 676,813 and 746,610 are referred to.
Patent GB-315193-A (GB)
Title: Process for the decomposition of hydrocarbons into hydrocarbons containing fewer carbon atoms
IPC: B01J27/22
Filed: 1928-01-18
Abstract: 315,193. Peski, A. J. van. Jan. 18, 1928. Hydrocarbons.-Hydrocarbons are decomposed into other hydrocarbons containing fewer carbon atoms, without the use of hydrogen or gases capable of yielding hydrogen, by treatment at high temperatures with one or more metallic carbides or with metals or metallic compounds which yield carbides under the conditions of the process. Complex carbides such as iron-tungsten carbide may be employed. In the examples, (1) propane is passed at 600-800‹ C. over calcium carbide or molybdenum mixed with pumice, the products being ethylene and methane, (2) gas oil boiling at 220-340‹ C. is passed at 350-700‹ C. over calcium carbide, yielding a liquid condensate boiling at 60-180‹ C. and some gas containing unsaturated hydrocarbons.
Patent GB-800681-A (GB)
Title: Improvements in and relating to filters and filtering media for liquids
Inventor: ALLEN RONALD GEORGE
IPC: B01D39/08
Filed: 1955-01-20
Abstract: 800,681. Filtering media. BRITISH FILTERS, Ltd., and PRITCHETT & GOLD & E.P.S. CO., Ltd. Dec. 15, 1955 [Jan. 20, 1955], No. 1787/55. Class 46.  A mat through which liquid to be filtered is passed comprises a layer of fibrous material preceding an adjacent self-supporting sheet of non-fibrous material. These may be united to form a composite sheet. A layer 1 of cellulose and asbestos fibres is attached by adhesive along its edges to a porous sheet 4 of a synthetic plastic such as that described in Specification 565,022 [Group IV] or one sold under the Registered Trade Mark " Porvic ". The composite sheet may be apertured as at 2, the non-fibrous sheet 4 being flanged over as at 6 into the aperture and overlapped by a flanged liner 7 of the same material. Specification 764,911 also is referred to.
Patent GB-489234-A (GB)
Title: Improvements in or relating to the manufacture of threads, bands or ribbons having abasis of regenerated cellulose or cellulose derivatives
IPC: D01F2/08
Filed: 1937-01-21
Abstract: Artificial threads, bands, or ribbons of regenerated cellulose, cellulose esters, or cellulose ethers are obtained from cellulosic solutions containing an addition of furfurol, its homologues, or its alcoholic hydrogenation products, alone or in admixture.  The products have increased strength particularly tensile strength. The wet strength may be almost equal to the dry strength.  The furfurol or furfurol derivative may be employed in simple mixture with naphthol, naphthol sulphonic salts, formaldehyde, or urea. For threads from aqueous cellulose xanthate solutions, mixtures of furfuryl alcohol with cresols may be used.  In an example, about one per cent of hydrogenated furfuryl alcohol in aqueous solution is added to a solution of viscose just before spinning; the solution is spun to threads in an acid bath.  In another example, a mixture of furfuryl alcohol and o-, m-, or p-cresol, preferably as a solution in a water-soluble solvent such as glycerine, or a glycerine ether, is added to viscose and the solution is spun to threads.  In another example, furfurol is added to a solution of cellulose acetate, and the solution is spun to form artificial silk.  The Specification as open to inspection under Sect. 91 comprises also the use of furfurol derivatives in general including esters of alcoholic hydrogenation products, and the application of the process to the production of shaped articles in general, including foils.  This subject-matter does not appear in the Specification as accepted.
Patent GB-866576-A (GB)
Title: Improvements in or relating to actuating spindles, more particularly for potentiometers and variable resistors
Inventor: WEBSTER EDMUND ERNEST
IPC: G05G1/12
Filed: 1959-01-19
Abstract: 866,576. Shafts; securing rotors and shafts. PLESSEY CO. Ltd. April 13, 1959 [Jan. 19, 1959], No. 1876/59. Class 80 (2). [Also in Groups XXII and XXXVI] A split hollow triangular operating shaft 1 for a potentiometer is formed by bending a strip of metal along longitudinal lines into a triangular section, forming rounded bearing surfaces 2 ... 4. An arm 5 which co-operates with a stop to limit the rotational movement and a switch-operating arm 6 may be formed integrally with the shaft. As shown in Fig. 3, the triangular shaft 13 passes through a cylindrical bore in a potentiometer mounting bush 12 and has a carrier 14 of polystyrene for wiper arms 16, 17 which co-operate with a contact ring 9 and resistor track 8 respectively. The carrier 14 has a triangular bore and is press fitted on the end of the shaft 13, axial movement thereon being prevented by the arm 5. Axial movement of the shaft 13 is prevented by forming a pip 20 at one corner 2 of the shaft. A groove 21 may be formed in the boss 12 to allow the pip 20 to be formed in the shaft 13 before assembly. In Figs. 4 and 5 (not shown), the carrier 14 has formed integrally therewith the stop arm and switch-actuating arm. A knob is a tight fit on the other end of the spindle.
Patent GB-524029-A (GB)
Title: A multi-chamber grinding mill
IPC: B02C17/07
Filed: 1939-01-19
Abstract: 524,029. Ball mills. KRUPP GRUSONWERK AKT.-GES., F. Jan. 19, 1939, No. 1923. Convention date, Feb. 10, 1938. [Class 59] In a tubular grinding-mill of the kind in which the crushing chamber 1 is divided by longitudinal partitions 2 to form a number of compartments 3 disposed eccentrically round a central shaft, each partition is provided with one or more apertures 7 whereby a uniform distribution of material in the separate compartments is obtained, all the apertures being disposed in the same zone. The apertures 7 may be fitted with removable covers 8 which preferably have slots 9 adjustable according to the nature of the material to be crushed. The chamber 1 may be fitted with manholes 10, preferably aligned with the apertures 7, and also with one or more transverse sieve-like partitions 4. Specification 402,289 is referred to.
Patent GB-448398-A (GB)
Title: Improvements in and relating to arrangements for preventing failure of flow in pumps delivering hot water
IPC: F04D9/00
Filed: 1936-01-21
Abstract: 448,398. Centrifugal pumps. AKT.- GES. BROWN, BOVERI, & CIE, Baden, Switzerland. Jan. 21, 1936, No. 1959. Convention date, Jan 21, 1935. [Class 110 (i)] To maintain the temperature of the hot water fed to a centrifugal pump below the evaporation point, cold injection water is supplied to the suction in accordance with the density of the hot water. The injection water is fed through a valve 2 which is actuated by a spring-pressed diaphragm or piston 4 connected on one side to the suction 5 and on the other to the delivery 6. Should the delivery pressure of the pump drop through the density of the sucked liquid decreasing owing to evaporation, the spring 7 will open the valve and cold water be fed to the pump. In an alternative arrangement, the injection water flows in freely from a container 9 as soon as the pressure in the suction falls below the pressure of the column of water in the container. In order to ensure that the top of the container 9 is connected either to the boiler or to the suction according to which has the greater pressure, a piston 17 with pipes 20, 21 leading to the boiler and suction respectively is inserted in the pipe 10.
Patent GB-305462-A (GB)
Title: Improvements in valves
IPC: F16K15/12
Filed: 1929-01-21
Abstract: 305,462. Chicago Pneumatic Tool Co., (Assignees of Moody, J. C.). Feb. 4,. 1928, [Convention date]. Addition to 284,347. Check lift valves.-An annular non-return valve of the type described in the parent Specification has the loading and buffer springs. mounted on stepped projections on a central guide member. The valve unit which is held in place by a spring 11 engaging a removable cover plate 8 comprises a flanged seat 14a having parts 14<c> closed by a valve member 16 guided by ribs on a central member 15. The member 15 is held in a recess in the seat by a nut 20 engaging a pin 19 and is shouldered at 15b to form an abutment for the loading spring 17. The buffer spring 18 is made to press fit on the part 15b which may be made slightly tapered.