baber/WOPTO huggingface dataset:
Patent GB-806561-A (GB)
Title: Forced flow, once through vapour generators
IPC: F22B35/10
Filed: 1957-03-05
Abstract: 806,561. Regulating forced-flow steam  boilers. SULZER FRERES S. A. March 5, 1957 [March 6, 1966], No. 7325/57. Class 123(2) A once-through steam-generator which may operate at or above critical pressure has three parallel-connected groups of tubes A, B, C comprising respectively four tubes 1...4, 5...8, and 9...12. The outlet end of each tube is connected to a header 20 whilst the inlet ends of tubes 1...3, 5...7, and 9...11 originate in respective subheaders 28, 30, 32 which are connected to the main inlet header 34 by respective conduits 36, 38, 40 having valves 46, 48, 50. The inlets of the remaining tubes in each group, namely the tubes 4, 8, 12, are connected directly to the header 34 and are fitted with respective valves 52, 54, 56. Feedwater flows into the header 34 through a line 42 controlled by a valve 44 whilst steam with a small amount of entrained water which carries most of the impurities, flows from the header 20 through a separator 58, wherein the water is removed, to an outlet 62. To control the condition of the steam entering the separator, the tubes 4, 8, 12 have respective temperature sensitive signal transmitters 68, 70, 72 adjacent their outlets. The transmitter signals are passed respectively to three bellows 78, 79, 80 in a selector mechanism 74, each of the bellows being expanded to a height corresponding to the associated steam temperature. The bellows connected to the transmitter sensing the highest temperature contacts a cross bar 82 of a lever 83 connected by a link 85 to an oil valve 86 through which pressure is transmitted through a line 76 to an actuator 75 which adjusts the feed water regulator valve 44 or, in a modification, (Fig. 3, not shown), the fuel supply valve so as to maintain the temperature constant. In operation, the rate of supply of feedwater or fuel is first adjusted so that steam having about 10‹F. of superheat is generated in the tube groups A, B, C, the valves 46, 48, 50 and 52, 54, 56 then being adjusted to give the same steam temperature at the outlets of the tubes 1...12. The superheat in one of the control tubes 4, 8, 12, e.g. the tube 12, is raised to 100‹F. by partially closing the valve 56 and then lowered to 25‹F. by opening the feed valve 44, the latter adjustment reducing the steam temperature in the other tubes to just below saturation level. Thereafter the valve 44 is adjusted in response to changes in the steam temperature in the tube 12, which is the tube delivering the hottest steam, the adjustments automatically maintaining constant the quality of the steam leaving the other tubes. If the tube 12 becomes slagged, its steam temperature will fall and eventually one of the control tubes 4 or 8 will take over control of the feed or fuel supply valves.
Patent GB-526111-A (GB)
Title: Improvements in or relating to television transmitting or receiving systems
IPC: H04N3/24
Filed: 1939-03-07
Abstract: 526,111. Television; valve generating circuits. FAUDELL, C. L. March 7, 1939, No. 7361. [Classes 40 (iii) and 40 (v)] The blocking oscillator for producing the deflecting voltage also generates a bias potential to suppress the beam during fly-back. The grids 5, 6, Fig. 1, are coupled by coils 7, 8, and an additional coil 9 shunted by a resistance 10 is connected to the cathode 11 of the tube 3. In modifications, the cathode 11 is connected to the inner-grid circuit of the valve by condenserresistance combinations that determine the duration of the bias impulse, Figs. 2, 3 (not shown). The bias impulse may be applied to a grid of the tube 3 through a diode that conducts only when the potential is below a suitable value. Fig. 4 (not shown).
Patent GB-589524-A (GB)
Title: Improvements in or relating to electric wiring systems and apparatus
IPC: H02G3/18
Filed: 1945-03-24
Abstract: 589,524. Junction boxes. RUTTER. F. W. March 24, 1945, No. 7484. [Class 38 (i)] In an electric wiring system for a distant point and one or more intermediate points, connection boxes c are provided at the said intermediate points to which the entering and leaving main cable conduits a are secured, substantially in line, by end caps a<1> and nuts a<2>, the main cables b, b<1>, b<2> being arranged in the box in the form of waves or loops which may be lifted part way out of the box without change of shape of the loops to remove the insulation for the connection of cables f by means of insulated connectors e. The cables f may be connected to the sub-circuit g, g<1>, g<2> through centrally-disposed fuses d, d<1>, d<2>, the sub-circuit emerging from the box through a conduit h.
Patent GB-911158-A (GB)
Title: Container for shock sensitive objects and method of manufacture therefor
IPC: B64D1/14
Filed: 1959-03-04
Abstract: 911,158. Laminates and laminating. GOODYEAR TIRE & RUBBER CO. March 4, 1959 [March 31, 1958], No. 7489/59. Class 140. [Also in Groups V, XVIII and XXXIII] A laminated double-walled container inflatable by compressed-air introduced between the annular walls, comprises a rubber ply 25, first and second fabric plies 26, 27, a second rubber ply 28 and an anti-adhesive coating 29 which may be a rubber cement high loaded with mica. The coating 29 is not applied at the peripheral edges of the walls where the walls are vulcanized together. Above the coating 29 are built up a third rubber ply 30, third and fourth fabric plies 31, 32 and a fourth rubber ply 33. The wall ends are turned up round bead members 19. Crotch strips 34 are fitted between the layers 29 and 30 to take up inflation strains between the two walls. The container may be built up on a cylindrical drum, or on an inflatable core and compressed during vulcanization in a surrounding two-part mould.
Patent GB-880799-A (GB)
Title: Improvements in or relating to photo-electric tubes
IPC: H01J29/62
Filed: 1960-03-03
Abstract: 880,799. Photo-electric tubes. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 3, 1960, No. 7566/60. Class 39(1) An electron-tube comprises a photo-cathode C, an electron-optical system and a collecting anode, wherein the electron-optical system comprises the coaxial arrangement of a hollow accelerating electrode F 3  and a decelerating electrode F2a, F2b, surrounding the end of the electrode F 3  remote from the photo-cathode C, the decelerating electrode F2b having a central aperture of which the diameter is smaller than the diameter of the accelerating electrode F 3 , the collecting anode being aligned with the central aperture and the decelerating electrode being arranged so that its central aperture is adjacent the position which, in operation, the .electron stream focuses. Preferably the field strength is approximately zero in the space between the aperture and the central anode. The latter may be a single anode or, as shown, an electron multiplier A 4 , A 5 , A 6 , A 7 . A cylindrical focussing electrode F 1  may be provided and the two parts of the decelerating electrode F2a, F2b, need not be connected together as shown, but may be connected to different potentials.
Patent GB-471922-A (GB)
Title: An improvements in photographic developers and fixing agents
IPC: G03C5/305
Filed: 1936-03-13
Abstract: 471,922. Photographic developing and fixing agents. I. G. FARBENINDUSTRIE AKT.-GES. March 13, 1936, No. 7638. Convention date, March 13, 1935. [Class 98 (ii)] A developing or fixing agent in solid or dissolved form for use with silver salt emulsions contains a soluble pyrophosphate or metaphosphate in order to avoid the formation of a white deposit of calcium sulphite or sulphate &c., on the emulsion during treatment owing to the use of hard water for the developing &c. baths. Formulae are given for metal-hydroquinone developers containing sodium pyrophosphate, and a hypo fixing bath containing sodium pyro- or meta-phosphate. The latter may be in the form of tri- or hexametaphosphate.
Patent GB-298853-A (GB)
Title: Combined variable-speed drives for paper-making machines and the like
IPC: D21F7/02
Filed: 1928-03-13
Abstract: 298,853. Chorlton, F. O. L. March 13. 1928. Driving mechanism.-Each section of a papermaking machine is driven by an epicyclic unit U of the type described in Specification 290,790, [Class 80 (ii), Gearing, Variable-speed &c.], in which the major portion of the power supplied is transmissible by toothed gearing to the driving shaft of the section. The units are connected together by a continuous or sectional driving shaft a driven by a steam-engine w or by an electric motor.
Patent GB-777444-A (GB)
Title: Improvements in or relating to coupling circuits for electronic tubes
Inventor: FROST ALFRED CECIL
IPC: H03K3/12
Filed: 1953-03-20
Abstract: 777,444. Electronic counting-apparatus; pattern-movement stepping registers. NATION-. AL RESEARCH DEVELOPMENT CORPORATION. June 17, 1954 [March 20, 1953], No. 7774/53. Class 106 (1). [Also in Group XL (c)] Fig. 5 shows a scale-of-three counting circuit in which the tubes V1, V2, V3 are interconnected by coupling circuits of the type described in connection with Figs. 3 and 4 (not shown) (see Group XL (c)). Successive negative pulses applied at lead F to the suppressor grids cause the counter to step. Fig. 6 shows a stepping register comprising trigger-pair circuits T1 and T2, each of which utilizes a pair of tubes V11, V12 and V21, V22 respectively of the type described in connection with Figs. 3 and 4 (not shown) (see Group XL (c)). Negative pulses are applied at lead P to step the condition of conductivity along the chain of trigger circuits, thus if a negative pulse is applied to lead A when a stepping pulse has been applied to lead P, the anode current of tube Vll falls and the control grid of V12 rises and the tube draws screen current which causes a fall in voltage to be applied to the control grid of V11. When the negative pulse at P has terminated, tube V12 draws anode current and the circuit is thus in its second stable position. The'next pulse at P causes the circuit T2 to change over and T1 to revert. In a modification shown in Fig. 7, the A.C. coupling to the right-hand tube (V 12, V22) of each trigger-pair is connected to the anode of the right-hand tube of the preceding triggerpair. The circuit will function with any number of triggers off-normal and may be used as shown in Fig. 8 as an information store in which triggers T1, T2, T3 are associated with a gate G1. A binary digit can be fed into the circuit either simultaneously by applying negative pulses at leads B and C or sequentially by applying negative pulses to lead A at appropriate stepping instants. Information stored can be read off either simultaneously on output leads a, b and c or sequentially on lead c by applying stepping pulses and may be recirculated via gate G1.
Patent GB-290406-A (GB)
Title: Improvements in the production of matrices for the pressing of talking machine record and for like purposes
IPC: C25D5/54
Filed: 1927-03-21
Abstract: 290,406. Gramophone Co., Ltd., and Bonelli, U. March 21, 1927. Preparing surfaces.-A wax-like or soap-like substance has its surface made electrically conductive by treating with a gas, for example sulphuretted hydrogen, and subsequently immersing in a fluid, for example a solution of silver nitrate or stannous chloride, with which the gas reacts to produce a conducting film on the surface. A matrix may then be made by electrolytically depositing copper or nickel on the surface, and used for stamping gramophone records, or for printing surfaces. In making a gromophone record before or after cutting the sound groove, the blank is placed in a chamber which is then evacuated to the extent of 10 inches or more of mercury and the gas is admitted slowly to impregnate. the surface. This treatment takes about 20 minutes. The blank is then immersed in a 1 per cent solution of silver nitrate or of stannous chloride whereby a film of the sulphide of the metal is formed on the surface which is now ready for electrodeposition. If desired a silver mirror may be deposited on the film-coated blank, before the matrix is made, by immersing in a 2 per cent silver nitrate solution in the presence of formalin for reducing.
Patent GB-235964-A (GB)
Title: Improvements in the construction of floating vessels
IPC: B63B3/14
Filed: 1924-03-27
Abstract: 235,964. Isherwood, Sir J. W. March 27, 1924. Frames and framing.-In the framing of double bottoms such as are described in Specification 10036/08 and comprising widely spaced transverse floor plates 1 with top and bottom longitudinals 3, to which the tank top and skin plating are riveted, running continuouslv therethrough, the usual intermediate floors, which support the longitudinals between the main floors, are replaced by fore-and-aft struts 2 riveted to the top and bottom longitudinals.
Patent GB-660454-A (GB)
Title: Improvements in and relating to apparatus for use in the manufacture of electric filament lamps
IPC: H01K3/10
Filed: 1948-03-16
Abstract: 660,454. Electric incandescent lamps. BRITISH THOMSON-HOUSTON CO., Ltd., VAUSE, A. S. and SKELTON, E. J. Jan. 12, 1949 [March 16, 1948], No. 7876. Class 39(ii) To facilitate the accurate positioning of the filament of an electric incandescent lamp relative to the bulb, the exhausting tube, with the flared stem and filamentsupporting wires attached, is located within a jig, and the filament-supporting wires are bent, spread and cut, and located in a predetermined position which has a definite relation to the exhausting tube only, so that when the bulb is subsequently aligned axially with the exhausting tube for the sealing operation the filament becomes aligned accurately relative to the longitudinal axis of the bulb. The apparatus comprises a holder 1 in the form of a cylindrical steel block which is slidable along a key 4 on a base 5 and bored axially to receive an exhausting tube, the lower part of the hole being of a diameter such that the tube fits substantially rigidly therein. The upper part of the hole is wider to receive the leading-in wires 6, and the top surface of the holder is recessed to receive a rubber pad 7, upon which the stem flange 8 is seated and cushioned. Two holes 9 are disposed symmetrically in the upper face of the block to receive dowel pins 10 in a horizontally arranged top plate 3 when the latter is lowered after moving the holder 1 along the key 4 into its operative position. The top plate 3 is lowered by operating a pedal connected to a spring- loaded rod 11, the initial movement causing full engagement of the dowel pins with the holes 9. A separately operated locking lever 17 is then moved manually to hold the stem tube in position while the next operations are performed. Upon further pressure being exerted on the pedal, the rod 11 depresses lever 12 carrying a wireforming tool 13 which speads and forms the filament-supporting wires 15 to the required shape, as shown in Fig. 3. With pressure maintained on the pedal, a pair of levers 16 are then swung manually by the operator to move cutters 14 which slide inwardly to cut the wires 15.
Patent GB-261244-A (GB)
Title: Improvements in drilling tools
IPC: E21B10/12
Filed: 1926-03-22
Abstract: 261,244. Haddan, A. J. H., (Seifert, W. V.). March 22, 1926. Borehole apparatus.-A drill for boring earth and rock has the cutters arranged to make annular cuts successively decreasing in diameter, the cutters being so recedingly stepped that each cutter removes the periphery of the core produced by the preceding cutter. As shown, an annular base member 7 is connected to a head 9 by an intermediate member which may be solid or formed of spaced legs 8 leaving apertures 10 for a flushing medium; the member 7 has lateral projections 32 to force loose hard material into the walls of the bore. One or more ducts 28 are formed in the member 7 and are each connected by a pipe 31 and branch ducts 29 to a duct 25 through which flushing medium is supplied. Rolling frusto-conical cutters 11 - - 23 are mounted on the member 7 and arms 8 so that the path of each cutter falls within the path of the next lower cutter. The cutters may be held within bushed apertures 41 by washers 44 and nuts 40, and may be arranged helically, or cutters making adjacent cuts may be diametrically opposed.
Patent GB-805534-A (GB)
Title: Improvements in or relating to catalytic condensation of diglycolesters of dicarboxylic acids
Inventor: SCHOUTEDEN FERDINAND LEONARD
IPC: B01J31/04
Filed: 1955-03-18
Abstract: In the manufacture of linear aromatic polyesters by the polycondensation of bis-(hydroxyalkyl)-esters of aromatic dicarboxylic acids, there is used as a catalyst an antimony or boron glycol compound of formula Sb2(O-CH2-CH2-O)3 or B2(O-CH2-CH2-O)3 The catalysts are made by heating antimony oxide or boron oxide with ethylene glycol (see Group IV (b)).  When the bis-(hydroxyalkyl)-ester is made by effecting ester-interchange between a dialkyl ester of an aromatic dicarboxylic acid and a glycol, there may be used as ester-interchange catalyst zinc oxide, zinc acetate or litharge. In examples, polyesters, some of which are fibre-forming, were made by reacting (1), (2), (3), (9) and (13) dimethyl terephthalate and ethylene glycol; (4) dimethyl terephthalate and 1 : 4-butane diol; (5) and (6) dimethyl terephthalate, ethylene glycol and 1 : 4-butane diol; (7) the dimethyl ester of di-(p-carboxyphenyl)-sulphone and hexane diol; (8) the dimethyl ester of o-carboxy hydrocinnamic acid and ethylene glycol; (10) dimethyl terephthalate, dimethyl isophthalate and ethylene glycol; (11) the dimethyl ester of di-(p-carboxybenzyl)-sulphone, ethylene glycol and diethylene glycol; (12) dimethyl terephthalate, the dimethyl ester of di-(p-carboxyphenyl)-sulphone and ethylene glycol.  The Provisional Specification describes the preparation of a polyester from dimethyl isophthalate and ethylene glycol.  Specification 740,381 is referred to.ALSO:An antimony or boron glycol compound of formula <FORM:0805534/IV (b)/1> is made by heating antimony oxide or boron oxide with ethylene glycol.  The compounds may be purified by recrystallization from ethylene glycol and washing with dioxane. They are used as catalysts for making polyesters (see Group IV (a)). Specification 740,381, [Group IV (a)], is referred to.
Patent GB-785552-A (GB)
Title: Improvements in and relating to fasteners
Inventor: ALLEN PETER HENRY GAY
IPC: F16B21/04
Filed: 1956-03-14
Abstract: 785,552. Stud and socket fastenings. BRITISH THOMSON-HOUSTON CO., Ltd. March 14, 1956, No. 7993/56. Class 44 A fastener comprises a bolt member 1 having a rectangular head 2, the bolt shank 4 4 standing perpendicularly off one -of the long sides of the head, the root 3 of the shank being of square cross-section having a side dimension equal to the width of the head 2, the remainder of the shank being of cylindrical cross-section, a helical spring 7 positioned on the cylindrical part of the shank and means for retaining the spring on the shank situated at the free end of the shank. As shown, the spring 7 is retained on the shank by a clip 6 which is snapped into a groove 5. The fastener is used to fasten a member 8 to a slotted plate by passing the head 2 with the member 8 attached, through the slot in the plate, withdrawing the root 3 from the slot against the spring 7 and rotating the head through 90 degrees to lie across the slot.
Patent GB-924709-A (GB)
Title: Sealed pressure-responsive electric switch
IPC: H01H35/34
Filed: 1960-03-07
Abstract: 924,709. Pneumatic actuation of switches. BENDIX CORPORATION. March 7, 1960 [May 26, 1959], No. 7996/60. Class 38 (5). A sealed pressure-responsive switch has a supporting structure comprising upper and lower bars 12 and 10 mounted on an insulating base 11 and carrying a rigid plate 13 grooved at 31 to allow hinge-like flexure. Plate 13 has a central aperture and has diaphragms 14, 15, 18 and 19 fixed peripherally thereto as shown so as to comprise two aneroid cells 16 and 20 which may be evacuated or loaded with an inert gas by means of tubes 17 and 21 respectively. Diaphragms 15 and 18 are joined at their centres and carry moving contacts 22 and 23, while contacts 24 and 25 fixed to the bars 12 and 10 respectively and project through diaphragms 14 and 19 by means of suitable (e.g. glass) seals. The chamber 29 formed between diaphragms 15 and 18 has a vent 30 communicating with the atmosphere or other pressure to be sensed. Due to the difference in area of diaphragms 15 and 18 pressure changes in chamber 29 will move the contacts 22 and 23 with respect to contacts 24 and 25. A spring 35 acts between bar 12 and the plate 13 and the spacing between the fixed contacts can be varied by means of a screw 36 while the position of the plate 13 and hence contacts 22 and 23 can be adjusted by screw 34, which may be driven by servomechanism (not shown).
Patent GB-397580-A (GB)
Title: A machine for conditioning sand and the like
IPC: B22C5/06
Filed: 1932-03-18
Abstract: 397,580. Treating mould materials. ASQUITH, Ltd., W. and DENNIS, H., Highroad Well Works, Halifax, Yorkshire. March 18, 1932, No. 8063. [Class 83 (i).] A machine for reconditioning used foundry sand &c. comprises a box A vibrated, as by a crank a<8> and linkwork a7, a<6>, a, and containing an inclined plate B and an oppositely inclined grid C, which breaks up the sand and passes it, by means of a shoot D, to a rotating beater E which projects it. Foreign matter such as coke, implements used in moulding, &c. gravitate down the grid C and the bottom of the box and pass out. The sand is moistened, while on the plate B or while being projected, by a spray F. The machine is driven by an electric motor e<3> and may be placed on the floor or sunk in a pit having a coarse grid at floor level and a hopper to direct the sand into the box A. In modifications, the machine may have wheels or be transported by a crane.
Patent GB-715315-A (GB)
Title: Improvements in or relating to the lubrication of gearing
IPC: F16N7/36
Filed: 1950-03-31
Abstract: 715,315. Lubricating. SEARLS, E. C. March 29, 1951 [March 31, 1950], No. 8117/50. Class 12(3) A gear box 3 comprises the combination of a rotatable casing 14, a driving shaft 1, a driven member 13, and a gear, wheel assembly 5-8 on the shaft so that the drive may be transmitted either to the rotatable casing 14 for idling or the member 13 for working. Oil dripping down the side of the casing 14 during rotation is directed by vanes 20 on to a thrower 19 which centrifuges the oil into a receiver 21 on the face of the flange 5, thus building up a supply of oil against the flange and feeding oil via ducts 22, 23 to the bearings 8 for circulation within the gear box. In order to supply oil to the gear box when forced lubrication is not used, a duct 25 allows oil to pass from the crank case to the gear case, an impeller 26 and a breathing device 27 being provided to promote the flow of oil laden air along the duct 25. In a modification the flange 5 is stepped to provide a recess in which sludge may be trapped. In Fig. 3 a scoop 30 passes oil down the duct 25 into a tubular member 31 having internal helical grooves 32, the member 31 driving the oil into ducts 33 in the sleeve 4. In order to remove surplus oil from the gear-box a duct 34 is provided in a helically grooved sleeve 15 and a further duct 36 is provided in the member 9. Oil then flows out through ducts 34, 35, and 36 on to the sleeve 31 and passes through the bearing 37 or a duct 29 to the crank case. In an alternative arrangement the sleeve 31 may be smooth, the helical grooves being formed in the shaft.