baber/WOPTO huggingface dataset:
Patent GB-577536-A (GB)
Title: Improvements in or relating to basic refractory materials
IPC: C04B35/03
Filed: 1943-08-26
Abstract: Refractories are treated at elevated temperatures with an agent in vapour form containing an element of the right-hand column of groups V and VI of the periodic table and having an atomic weight between those of sulphur and tellurium and two-element compounds thereof other than compounds with iron and the alkali metals.  Suitable materials, which may be added in amounts varying from 1 to 15 per cent, are sulphur, arsenic, tellurium, antimony and selenium, either alone or in combination with each other or with metals, e.g. arsenic sulphide; sulphur in combination with oxygen is not suitable.  The materials are volatile and leave the refractory unimpaired after final firing, but at the intermediate temperatures diffuse throughout the refractory and improve its strength.  Unfired bricks or refractory surfaces may be exposed to the action of the material at a sufficiently high temperature, bricks may be burned and then treated by introducing the material into the kiln, or the material may be made up into a mortar, in which case, during heating, the material permeates the adjacent bricks.  According to examples: (a) sulphur or antimony oxide is introduced into the kiln after completion of the burning of magnesite bricks at a temperature of 2500 DEG  F.; (b) cements for chemically-bonded, unburned magnesite-chrome or chrome bricks are prepared by adding water to a mixture of 86.5 per cent magnesia clinker, 1.5 per cent plasticising agent (bentonite), 2 per cent soluble silicate binder (sodium silicate) and 10 per cent sulphur or antimony oxide.  According to the Specification as open to inspection under Sect. 91, the material may be added in the form of iron sulphide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1055115-A (GB)
Title: Improvements in folding boxes and blanks, particularly in regard to sealing by meansof a thermoplastic coating preapplied to both sides thereof
IPC: B65D5/66
Filed: 1965-04-02
Abstract: 1,055,115. Heat-sealable cartons. KLIKLOK CORPORATION. April 2, 1965 [Feb. 25, 1965], No. 13987/65. Heading B8P. Side wall panel 21, Fig. 1, of an erected folding box, of paper board, coated on both sides with thermoplastic material, is connected to the box bottom 12 by a fold line 25 which is bowed towards the outside of the box to bring the central portion of the panel 21 into the same plane as corner flaps 20, 22 which overlap the sides of the panel 21. Flap 23 of a cover panel 14, hinged to the opposite side wall 13, is then heat sealed to this substantially flat surface comprising the flaps 20, 22 and the central portion of the wall panel 21, to form an end closure. In the embodiment described the box is erected from a blank, Fig. 1, comprising a bottom panel 12, two side wall panels 11, 13 and an end wall panel 21. In erection the corner flaps 20, 22 are locked into the end wall by inserting a tongue 28 into a corresponding slot 29, Fig. 2 (not shown). The top cover panel 14, attached to the box body by fold 18, has flaps 15, 23 which fold down over the side walls 11, 21 respectively to close the box. Adhesion is obtained between the panels 15, 11, 23, 21 and flaps 20, 22 by heating and melting the thermoplastic coating.
Patent GB-828944-A (GB)
Title: An air compressor regulating device
IPC: F04B49/20
Filed: 1957-05-02
Abstract: 828,944. Regulating compressors. NICHOLS, T. W. March 17, 1958 [May 2, 1957], No. 14012/57. Class 8(1). The suction valve 6 of an I.C. or diesel engine driven conpressor is slidably mounted on a spindle 7 passing through the valve seat 5 and to which is secured a ported piston 10 controlling inlet ports 9 in the valve body 1 and flexible diaphragms 14, 15 clamped between the body 1 and end covers 19, 21 so as to provide a space 18 open to atmosphere and a space 20 connected through an aperture 22 to either the suction manifold of the engine or to the vacuum pipe joining the engine throttle valve to the fuel valves whereby the diaphragms 14, 15 serve to move the piston 10 to a position where it cuts off the air intake to the compressor at a predetermined vacuum in space 20. In a modification diaphragm'14 and piston 10 may be dispensed with and the valve 6 is held against its seat 5 by an abutment on the spindle 7.
Patent GB-1355252-A (GB)
Title: Electron lenses of the magnetic field type
IPC: H01J37/153
Filed: 1971-05-10
Abstract: 1355252 Electron beam magnetic focusing apparatus HITACHI Ltd 10 May 1971 [13 May 1970] 14056/71 Heading H1D An electron lens for an electron microscope includes an annular exciting lens 5, a magnetic cover of an upper magnetic path member 3, a lower magnetic path member 4, and magnetic polepieces 1, 2, either formed as separate pieces or integrally with the members, in either case the poles being located within the central space defined by the annular coil a plurality of compensating coils 7 (e.g. with four coils as in Fig. 1b (not shown)) at least partially embedded in the lower polepiece or path member and separated by the cover or another part of the lens from the tubular beam space, with supply means for supplying compensating currents to the compensating coils and circuit means for adjusting the compensating currents whereby astigmatism and undesired deflection of an electron beam may be corrected. Spacer 6 is non-magnetic. In Fig. 1b opposite coils are in series opposition. Correction of astigmatism in any, rather than one direction, is by eight coils, Fig. Ic (not shown), and current through respective sets of four coils may be varied according to sine and cosine functions. Astigmatism correction in any direction may be attained by four coils as in Fig. 6b (not shown), respective sets subtending 45 degrees, the polepiece and magnetic path member being formed integrally, Fig. 6a (not shown). The coils may be embedded in the lower magnetic member 4 (Fig. 2, not shown) or mounted on the lower polepiece 2 (Figs. 3a, 3b, not shown) with protective tube (8). Figs. 4a, 4b (not shown) include four coils 7 at points as remote as possible from the beam and eight coils, similar to Fig. lc, may be included. The coil device 7 may also be mounted in the magnetic cover without being exposed to the beam (Figs. 5a, 5b, not shown). Connections from compensating coils to lens coil 5 may be as in Fig. 7 (not shown).
Patent GB-1204932-A (GB)
Title: Angular speed change sensor
IPC: H01H35/06
Filed: 1968-03-22
Abstract: 1,204,932. Brake anti-skid systems. BORG-WARNER CORP. 22 March, 1968 [18 July, 1967], No. 14057/68. Heading F2F. [Also in Division H1] An inertia switch which closes when a preset rate of change of speed of a rotatable member such as a vehicle wheel is exceeded, comprises a flywheel 29, Fig. 3, rotatably supported in a housing 25, 31 attached to the rotatable member, the flywheel being frictionally coupled to an actuator plate 38 which is coupled for limited rotational movement relative to the housing against a biasing spring 53, displacement of the plate completing an electric circuit through an electrical contact finger 42. The actuator plate 38 is rotatably mounted on a central boss 32 and its movement is limited by a housing stud 33 extending through an arcuate slot 48, Fig. 4, in the plate, the plate being biased to a rest position at one end of the slot by spring 53. Frictional coupling of the actuator plate to the flywheel is effected by a centrally pivoted spring steel plate 58 having leaf springs 59, 61-63 which frictionally engage a flywheel recess 64. Normally the electrical contact finger 42 rests on an insulating stud 57, but when the actuator plate is displaced against the spring 53 due to the preset rate of change of speed being exceeded, the finger engages the conductive body of the plate and completes an electrical circuit from a rivet 47 to a brake pressure regulating apparatus 22 through a slip ring and brush 16, 17. The switch may be mounted either centrally, Fig. 2 (not shown), or eccentrically, Fig. 1, of a vehicle wheel, and in either position the flywheel tends to rotate relative to the housing when the vehicle decelerates.
Patent GB-799345-A (GB)
Title: Improvements in systems including an internal combustion engine provided with a carburettor fitted with an automatic starting and cold running device
IPC: F02M1/04
Filed: 1957-05-02
Abstract: 799,345. Indicating working conditions; spray carburetters.SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES, S.I.B.E. May 2, 1957 [May 7, 1956], No. 14068/57. Classes 7(2) and 7(3) Closure of the control switch 25, Fig. 2, of an ignition circuit A lights a dashboard &c. lamp 30 but passes insufficient current through a resistance 21 to operatively heat a bimetallic strip 16 to cut out a carburetter starting device until, on starting, lubricating oil pressure closes an earthing switch 28 extinguishing the lamp 30. The carburetter starting device comprises a duct 15, Fig. 3, opening downstream of the throttle valve 4 and supplied by a float chamber well 7 via a valve 12 closed after five to ten minutes operative heating of the strip 16.
Patent GB-217593-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28D9/00
Filed: 1924-06-11
Abstract: 217,593. Beauvais, G. M. G. de. June 13, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Plate apparatus.-Plates a which when assembled form separate passages carrying the heat exchanging media, for example hot gases and air, are provided with bent edges a<1>, a<2> which constitute the sole spacing means between the plates, and form the edges of the alternate assembled passages when held together by suitable pressing means such as end frames and tie bars lying in the cut-away corners. The tongues a<1>, a<2> may be bent angularly, Fig. 3, or to a curved form, Fig. 5. Assembled blocks of elements may be fitted together in any series and parallel arrangement.
Patent GB-876894-A (GB)
Title: Power take-off coupling
Inventor: BLANCH ALVAN BENNETT
IPC: F16D3/72
Filed: 1959-04-25
Abstract: 876,894. Universal joints; shaft couplings; machinery guards. ALVAN BLANCH DEVELOPMENT CO. Ltd. April 14, 1960 [April 25, 1959], No. 14195/59. Classes 80 (2) and 80(4). A coupling between a tractor power take-off shaft and a shaft to be driven comprises a squaresectioned telescopic shaft 1, 2 the ends of which are connected by helical springs 5, 6 to end connectors 9, 10 secured to the respective shafts by screws 11. The springs are secured to the shafts 1, 2 and connectors 9, 10 by compressively gripping several convolutions between flanges 3, 4; 3a, 4a; 7, 8; 7a, 8a. A rubber tube 12 supported by a flange 13 surrounds at least part of the coupling and acts as a guard.
Patent GB-241130-A (GB)
Title: Improvements in and relating to sliding door fastening devices
IPC: E05B65/08
Filed: 1925-06-02
Abstract: 241,130. Kaye, W. K., and Kaye, J. V. June 2, 1925. Catches, spring. - A pivoted hook catch for sliding doors provided with two hook catches B, B<1> respectively adapted to engage striking plates at opposite sides of the door frame to hold the door in either the fully-opened or closed position, has a catch-releasing member 0 carried by a spindle provided with handles H, H<1> at opposite sides of the door, and arranged to be rocked to disengage the operative catch when pressure is applied to a handle to slide the door in the required direction. The catches are urged to the engaging position by springs R, R<1> bearing against an H-shaped member C. A hand or key operated sliding locking member D<1> may be provided having projections D adapted to prevent movement of the member O by engagement with projections O<1> thereon. In an alternative arrangement, the pivoted catches may be mounted on the door frame, the casing on the door carrying striking plates and a handle-operated catchreleasing mechanism. Specification 7087/01 is referred to.
Patent GB-621798-A (GB)
Title: Loose-leaf book
IPC: B42F3/00
Filed: 1946-05-13
Abstract: 621.798. Loose-leaf &c. binders. WEBER, E. May 13, 1946, No. 14422. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 4, 1947.] [Class 146 (i)] In a loose-leaf book having perforated leaves filed on spring bands inserted at both ends in the book covers, each of the bands has a middle portion of circular cross-section, and flat end portions. A loose-leaf book comprises covers 20 and a back 21, and holes' 27 in the leaves to be filed are slit to the inner leaf edge, and threaded on bands comprising helical springs 23, the ends of which bands are inserted in slits in the covers. The springs 23 may be surrounded by envelopes of yieldable material such as rubber, and may have their flattened ends enclosed in metallic sleeves. In another form, the springs occupy only the middle parts of the bands, and are surrounded by envelopes having flattened ends, which envelopes may be formed of an impregnated fabric hose. In a third form, the springs may be flat and bent into an arc shape over their middle parts, which are surrounded by envelopes, as of rubber or synthetic resin, of round cross-section. The Specification as open to inspection under Sect. 91 comprises also a form in which the bands are of spring steel of rectangular cross-section and not provided with envelopes, the leaves having elongated holes which may be slit to their inner edges.  This subject-matter does not appear in the Specification as accepted.
Patent GB-400546-A (GB)
Title: Improvements in packings for stuffing boxes
IPC: F16J15/20
Filed: 1933-05-18
Abstract: 400,546. Stuffing-box packings. ROY, E. R., Bridgewater Avenue, Finderne, Bound Brook, New Jersey, U.S.A. May 18, 1933, No. 14426. [Class 122 (v).] A packing for stuffing-boxes comprises pairs of annular members 5, 6, the lower of which has an oblique inner face to coact with the lower face 10 of the member 5. This member is provided with a lip 12 which is normally spaced from the oblique face of the lower member and which encloses an annular cavity 11. The packing is composed of plies of cloth, asbestos, cotton duck, hemp, or leather.
Patent GB-300479-A (GB)
Title: Improvements in ignition sparking plugs for internal combustion engines
IPC: H01T13/54
Filed: 1928-05-16
Abstract: 300,479. Dacco', A., and Salvi, S. May 16, 1928. Sparking-plugs. - The sparking terminals are situated within a chamber 8. A copper bush 3 is interposed between the insulator 2 and casing 1, and is screwed on while hot.
Patent GB-890342-A (GB)
Title: Low temperature air separation with improved argon recovery
Inventor: LATIMER ROBERT EDMOND
IPC: F25J3/04
Filed: 1960-04-25
Abstract: 890,342. Air rectification processes. UNION CARBIDE CORPORATION. April 25, 1960, No. 14468/60. Class 8(2). In a two-stage air rectification process wherein argon-rich nitrogen gas is withdrawn from a low pressure column 12 through an intermediate level conduit 37, product oxygen is withdrawn from a lower level e.g. liquid oxygen through a conduit 36, gaseous nitrogen is withdrawn from the top of column 12 through a duct 34 and wherein reflux is provided by liquid nitrogen withdrawn from a high pressure column shelf 18 through a valved duct 22 and by liquid oxygen withdrawn from the base of the high pressure column 11 through a valved duct 24, 26 the composition of the reflux at the head of the low pressure column 12 is such as to be in phase equilibrium with the rising vapour in the vicinity of the nitrogen-rich reflux feed level thereby producing a region in said head within which substantially no change occurs in the oxygen content of the descending liquid but an effective change is maintained of the argon content. Such a flux condition is referred to as a "top oxygen-pinch " and is obtained by maintaining the effluent nitrogen purity at about 98À5% and that of the nitrogen reflux at 96% by adjustment of the expansion valve 23. Other " oxygen pirches" " in the upper portion of column 12 are obtained by location of the oxygen-rich feed conduit 26 and that of a feed duct 31 through which oxygen-rich vapour passes from the condenser chamber 32 of an auxiliary argon column 30 to the low pressure column 12. A desired " oxygen-pinch " is held by maintaining a predetermined difference e.g., 1À4% in the oxygen content of the vapour on the second and third trays 14 below the oxygen-rich vapour feed point by controlling the argon discharge valve 40 by means of a control member 56 responsive to thermometers 50. In a modification wherein oxygen product is withdrawn from the low pressure column in the vapour phase the reflux liquid nitrogen control valve 23 is itself controlled by means responsive to thermometers arranged at different levels in the high pressure column. In a further modification wherein product oxygen is discharged in the liquid phase, oxygen-rich 'liquid is pumped from the base to the head of the high pressure column just above the nitrogen shelf, and the top oxygen-pinch is controlled by regulating the oxygen-rich vapour feed by a mechanism responsive to purity measurements as described above.
Patent GB-183642-A (GB)
Title: Improvements in or relating to the construction of conveyor chains and the like
IPC: B65G17/06
Filed: 1921-05-25
Abstract: 183,642. Smallwood, A. May 25, 1921. Driving and like chains with separate joint pins.-In conveyer and like chains of the kind wherein each link a is of flat tubular form, the distance between the flat parts a<2> of each tube is less than the diameter of the joint-pins b, whereby end recesses are formed which retain the pins in position. The flat webs may meet together as shown in Fig. 5. The pins b are tubular, and are retained in position lengthways by end flanges, one of which is formed after assembly of the links.
Patent GB-550741-A (GB)
Title: Substitutes for natural felspathic rocks
IPC: C04B33/02
Filed: 1941-11-12
Abstract: 550,741. Artificial felspar. DOULTON & CO., Ltd., and ALLEN, J. Nov. 12, 1941, No. 14590. [Class 22]  Artificial felspar is made by melting together in an oxidizing atmosphere at 1300‹C. or over, an alkali metal salt or oxide with alumina and silica, and/or minerals containing constituents of felspar together with any additions necessary to bring the composition to the desired range which is : silica 60 to 67, alumina 16 to 20, and alkali metal oxides 13 to 15 per cent. Examples specify potassium nitrate, potassium and sodium carbonates, aluminium oxide and hydrate, china clay, quartz, and Cornish stone. The molten material may be run into a water bath and ground to a particle size for ceramic use &c.
Patent GB-202087-A (GB)
Title: Improvements in and connected with coin freed machines
IPC: G07F13/08
Filed: 1922-05-25
Abstract: 202,087. Watson, S. D. May 25, 1922. Spray-producers.-Perfume-spraying apparatus is operated by a plunger F, which, when released by the insertion of a coin, can be pushed in to compress a pneumatic bulb 0 connected by tubes to the containing-vessel P and to the spraying- nozzle Q. The tube 0<2>, Fig. 8, from the bulb, leads into a tube 0<5> which extends downwards into a tube 0<3> in the vessel U and upwards to the nozzle Q. In the tube 0<5> is a smaller tube O<4>, up which the perfume is forced to the nozzle. A valve R prevents the perfume in the tube 0<3> from returning to the vessel. Coin action, weight.-The coin, when inserted in the slot E, slides down an incline I, and depresses a pivoted platform J, which is connected by a link K to a detent L engaging teeth F<1> on the plunger. Coin-discharging mechanism.-The coin is held on the platform J by a rod N projecting from the plunger. When the plunger is pushed in, the coin is released, and drops into a box.
Patent GB-1344697-A (GB)
Title: Preparation of tetrafluorohydrazine
Inventor: MATHEY F
IPC: C01B21/083
Filed: 1971-05-13
Abstract: 1344697 Preparation of tetrafluorohydrazine FRANCE ARMED FORCES-MINISTER OF 13 May 1971 [21 May 1970] 14738/71 Heading C1A Tetrafluorohydrazine is prepared by (a) fluorinating phosphorylamide or a derivative thereof of formula, in which R 1  and R 2 , which are the same or different, are -NH 2 , C 1-5  alkyl, C 1-5  alkoxy, aryl or aryloxy, with more than 2 moles of fluorine per mole of said starting material, in the presence of a buffer salt (e.g. an alkali metal phosphate or acetate) capable of neutralizing the HF produced, at a temperature from room temperature down to - 35‹ C. (e.g. 0‹ to - 35‹ C.), in a solvent for said starting material and with agitation, and (b) oxidizing the fluorinated product thus obtained to N 2 F 4 . Preferred solvents in stage (a) are H 2 O, C 1-5  alkanols, mixtures of H 2 O and C 1-5  alkanols (e.g. MeOH/H 2 O), CH 3 CN, polyhalogenated alkanes, dimethylformamide and pyridine. Stage (b) may be effected by (i) acid hydrolysis of the fluorinated product of (a) with a concentrated mineral acid at > 95‹ C., followed by oxidation of the hydrolysed product with an acidic oxidizing solution of pH not less than 2 (e.g. a ferric salt solution) or (ii) direct oxidation of the fluorinated product with said acidic oxidizing solution at # 90‹ C. The crude N 2 F 4  may be purified by bubbling it through a dilute aqueous NaOH solution and dried by contact with a molecular sieve.
Patent GB-989177-A (GB)
Title: Improvements in or relating to electrical measuring circuits
IPC: G01R19/00
Filed: 1961-04-24
Abstract: 989,177. Electric measuring apparatus. HONEYWELL Inc. April 24,1961 [April 27, 1960], No. 14764/61. Heading G1U. An apparatus for measuring D.C. voltage signals from a thermocouple 2 comprises a signal amplifier 22 having a common mode reference terminal 26 and a differential signal input terminals 20, 24, to which are connected first and second input circuit legs, and a transformer 12 with a primary winding 14 and two secondary windings 16,18, each secondary winding being series connected in a leg of the input circuit. The primary winding is capacitatively coupled between both legs of the input circuit and the common mode reference terminal, through capacitors 28, 30. The primary winding induces in the secondary windings a signal opposing common mode signals in the two legs of the input circuit, so as to eliminate spurious alternating current signals in the legs of the thermocouple, which are caused by grounding the sensing junction. Such signals, termed common mode signals, act as though a constant alternating current generator 36 is connected between the thermocouple juntion and the common mode reference level. The transformer secondary windings are bifilarly wound so as to make them as similar as possible in their individual characteristics and in their relation to the primary winding.