baber/WOPTO huggingface dataset:
Patent GB-1141759-A (GB)
Title: Spectral analysis instrument
Inventor: DOLIN STANLEY ARTHUR
IPC: G01J3/28
Filed: 1967-05-02
Abstract: 1,141,759. Spectrometers. WARNER & SWASEY CO. May 2, 1967 [May 27, 1966], No. 20338/67. Heading G2J. [Also in Division G1] A spectral analysis instrument, especially for infrared wavelengths, comprises a Cassegrainian system for collecting radiant energy from source 10 and imaging said enery at slit 11 of a grating monochromator which, through grating 21 and mirrors 20, 22, and 23, focuses the spectrum of said energy in the focal plane 24, this plane lying in the path of a series of corner mirrors 26, 27 each with an apertured baffle plate 31, carried on a rotating wheel 25 forming an optical scanning device whereby, in accordance with a linear time function, the spectral beams are returned through the instrument along a laterally off-set path to monochromatic exit slits 34, 41. Half of the spectrum is received by each slit and passes through optical filters 35, 42 to photo-electric detectors 36, 43 whose output signal amplitudes are instantaneously proportional to the instantaneous intensity of the energy received. The two signals are amplified and applied, via control circuit 38, to first and second sets of vertical deflection plates in a dual-beam C. R. T., 40. The horizontal sweep of each C. R. T. trace is triggered by the scanning wheel 25 through the output of photoelectric detector 46 which receives light from source 48 reflected by corner mirrors 26, 27 before scanning focal plane 24. Thus the traces 52, 53 display the variation of radiation intensity with wavelength. Circuit 38 may include a vertical separation indexer whereby the traces corresponding to successive wheel scans are vertically separated on the C. R. T. display and may be identified by timing markers on a separate C. R. T. displaying the total radiation from source 10 over a period of time. Detector 54 in the Cassegrainian system provides the total radiation signal. Standard radiation from source 16 may be directed on to entrance slit 11 by swinging mirror 15 to the dotted-line position, in which position the opposite face of this mirror directs light from lamp 19 to the Cassegrainian system for alignment purposes.
Patent GB-841548-A (GB)
Title: Apparatus for electrically determining the concentration of hydrogen cyanide or hydrogen sulphide in air
Inventor: ROTH HAROLD HERMAN
IPC: G01N33/00
Filed: 1958-06-25
Abstract: 841,548. Electric tests. MINE SAFETY APPLIANCES CO. June 25,1958, No. 20348/58 Class 37. Apparatus for determining the concentration of hydrogen cyanide or hydrogen sulphide in air comprises an absorption chamber within which a solution of the compound is formed by passage of the air to be tested, the resultant solution being passed over a silver electrode at high relative velocity, and the e.m.f. produced between the silver electrode and a reference electrode being measured. As shown, Fig. 4, the air to be tested is drawn through a glass-bead absorber 1 by a waterjet aspirator 4, the rate of flow being measured by a "Rotameter" (Registered Trade Mark) 8 and controlled by a needle valve 7, and the absorber 1 is supplied via a capillary tube 27 from a constant head tower 12 fed from a water line 9 or, if tap-water is insufficiently alkaline, by distilled or deionised water, corrected to a pH value of about 10À5, through an inlet 26. The solution from absorber 1 passes to a half-cell 18 comprising a silver electrode 19 which is rotated at 1725 r.p.m. or faster by a motor 23, electrical connection to the electrode being via a slip-ring 24a on the motor shaft. A calomel reference electrode 20 is connected to the solution by a salt-bridge 21, and the output from the electrodes is fed to a meter, preferably a valve voltmeter or a recording potentiometer, and may actuate a visual or audible warning device. Fig. 6 shows portable apparatus in which a measured sample of air is drawn through a bulb absorber 30 containing absorbing solution by a syringe pump 38, the solution then being pumped through a capillary tube 32 containing a silver wire electrode 31 by an air pump 33. Silver electrodes require ageing by operation, or the forming thereon of a black silver sulphide layer, before the apparatus is calibrated. A petticoat bubbler is said to be the preferred form of absorber.
Patent GB-977015-A (GB)
Title: Improvements relating to the manufacture of seam-welded tubes and the like
Inventor: JOHNSON OLIVER SANDERS
IPC: B23K37/08
Filed: 1961-06-06
Abstract: 977,015. Welding by pressure; working by fusions. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 1, 1962 [June 6, 1961], No. 20386/61. Headings B3R and B3V. An internal weld bead on the weld of a seam-welded tube or cable sheath is removed or smoothed by an arc produced between an electrode and the bead. The edges of a cable sheath 1 surrounding a core 3 are brought together by rolls 5 and welded at a point w. A support 7 carries a tube 6 surrounding the core 3 and extending beyond the welding point w. The tube 6 is plastic-coated and is eccentric with its thickest part under the seam 4. A groove 9 in the tube 6 accommodates the internal weld bead 10 which is removed or smoothed by an A.C. arc formed between the bead 10 and a tungsten electrode 8 mounted in the tube 6. Cooling ducts may be formed in the tube 6.
Patent GB-1390485-A (GB)
Title: Pyrazoles
IPC: C07D231/22
Filed: 1973-04-30
Abstract: 1390485 Pyrazoles MERCK & CO Inc 30 April 1973 [5 May 1972] 20475/73 Heading C2C Pyrazoles are prepared by the following route (R = H, C 1-3  alkyl or alkoxy, Ph, Ph-alkyl; R<SP>1</SP> = C 3-6  cycloalkyl, Ph-(C 1-3  alkyl), Ph optionally substituted by one or more halogen atoms and/or C 1-3  alkyl or alkoxy groups; R<SP>2</SP> = C 3-6  alkyl, hydroxyalkyl or alkynyl, Ph-(C 1-6  alkyl), indolyl.(C 1-6  alkyl)), optionally followed by salt formation. The products are #-adrenergic blocking agents, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-676106-A (GB)
Title: Improvements in or relating to electrical contact devices for rotary apparatus
IPC: H01R39/64
Filed: 1949-08-08
Abstract: 676,106. Supplying current to rotating conductors. RICCOMAGNO, G. Aug. 8, 1949 [March 30, 1949], No. 20538/49. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 7, 1950.] Class 38 (i). A contact device for rotary apparatus comprises annular metal pots 10, 10' containing mercury, concentrically arranged on an insulating support 14 and provided with insulating surrounds 15, 15<SP>1</SP> having downwardly extending flanges forming annular spaces 16, 16<SP>1</SP> for cylindrical contact 12, 12<SP>1</SP> which dip into the mercury and are connected to conductors 3, 3<SP>1</SP> passing through a hollow shaft 1 with which the contacts rotate. Terminals 13, 13<SP>1</SP> are welded or brazed to the bases of the pots. The inner walls of the latter may have ribs to prevent rotation of the mercury, and all the parts in contact with the mercury are formed of a material which does not amalgamate therewith. The Specification as open to inspection under Sect. 91 shows a construction wherein the shaft 1 has concentric cylindrical contacts 4, 5 secured on its end, Fig. 1 (Cancelled), and dipping into insulating pots 9, 9<SP>1</SP> containing mercury. Where the shaft is horizontal, contacts 4, 5 terminate in discs whose peripheries dip into the pots which are then arranged side by side, Fig. 2 (Cancelled) (not shown). The discs may have sections insulated from each other which complete different circuits. This subject-matter does not appear in the Specification as accepted.
Patent GB-533707-A (GB)
Title: Means for feeding substantially uniform mixtures of gaseous fluid and entrained particles
IPC: F23K3/00
Filed: 1939-07-14
Abstract: 533,707. Pulverulent fuel burners. BABCOCK & WILCOX, Ltd., and McMEIL, H. July 14, 1939, No. 20546. [Class 75 (i)]. Pulverized fuel and primary air is supplied to the burner barrel 1 through a casing 2 having a lateral inlet duct 4, uniformity of the mixture being promoted by causing it to pass through a narrow annular gap 3 between an extension 5 of the barrel and a renewable plate 6 bolted to inner surface of a plate 9 covering the back of the casing. The duct 4 has a circular inlet leading to a throat 10 of square cross-section. The casing 2 and barrel 1 are bolted to a wind-box 30 fitted with control dampers 32 and baffles 33 for the secondary air which mixes with the fuel and primary after passage through a cellular grid 19 mounted between a flange 17 on the barrel and a frame 37 secured to an extension 38 of the wind-box fitted with a portring 44. An impeller 20 arranged in the ring 44 is mounted on a shaft 21 adustably mounted in the plates 6, 9. A plate 42 formed with a circular opening 43 allows the air to pass circularly around the burner barrel. In one modified form the gap 3 is formed by slits spaced equiangularly around the barrel and in another the plate 6 and extension 5 are conical so that the mixture is given a motion component forwardly along the barrel axis.
Patent GB-1332376-A (GB)
Title: Photographic material
IPC: G03C11/02
Filed: 1971-04-19
Abstract: 1332376 Photographic material EASTMAN KODAK CO 19 April 1971 [9 Feb 1970] 20566/71 Heading G2C A photographic material useful for the production of a micro-fiche comprising a header region for the incorporation of eyeball readable identifiers and a transparent support bearing on one side thereof a photosensitive layer (e.g. a diazo or silver halide emulsion layer), and, only in the header region on the opposite side thereof, an identifier layer comprising a polymeric binder having dispersed therein 20-80% by weight of the identifier layer a pigment having a refractive index of 1À6-2À1, the identifier layer being 0À03 to 0À2 mil thick, having an optical density of not more than 0À3 and is translucent to light but is substantially photographically transparent so that the identifiers are reproduced in copies made from the micro-fiche.
Patent GB-1370518-A (GB)
Title: Method and apparatus for fusing a powder image
IPC: G03G15/20
Filed: 1972-05-03
Abstract: 1370518 Fixing powder images SCOTT PAPER CO 3 May 1972 [10 May 1971] 20580/72 Heading G2H An image of fusible toner particles on a support is fixed by applying heat to the back of the support, so raising the image to a temperature below that at which the toner fuses, and fusing the image with a beam of radiant heat or with a moving contact heater. Preferably the support is carried by a platen with electrical resistance heaters embedded in it, and the radiant heat is applied by moving lamps. The fixed image may be used as a lithographic printing plate. Materials for the support, which may comprise a base and a photo-sensitive layer, are listed. Preferably the toner comprises a pigmented fusible or thermoplastic resin which softens or melts at 300 to 350‹ F.
Patent GB-1255874-A (GB)
Title: A tool for detaching an element affixed transversely on an elongated support
Inventor: CHERRETT EDWIN ALFRED
IPC: B66F15/00
Filed: 1969-04-23
Abstract: 1,255,874. Tool for prizing floor-boards &c. E. A. CHERRETT, and P. A. CHERRETT. 30 May, 1969 [23 April, 1969], No. 20787/69. Heading B4C.  A tool for prizing-up floor-boards &c. comprises a body-portion 1 having a curved surface 2 and at least one extension 5 also having curved surfaces 6 so that whilst the surface 2 rests on a floor joist, the extensions 5 lie alongside the joist and under a floor-board, which is to be prized up. The tool is levered about the surface 2 using a handle 4. The body-portion may comprise a curved plate (3) Fig. 3 (not shown) having a notch (11) for extracting nails, and a flat surface 9 which may be levered against a nail secured in a joist, allowing further curved surfaces 8 on the extensions 5 to cramp floorboards together.
Patent GB-941679-A (GB)
Title: Improvements in artificial textile filaments
Inventor: SCRAGG FREDERICK
IPC: D02G3/22
Filed: 1961-06-09
Abstract: 941,679. Synthetic filaments having projections. ERNEST SCRAGG & SONS Ltd. June 8, 1962 [June 9, 1961], No. 20872/61. Heading B5B. A textile filament of synthetic material comprises a main trunk and integral therewith, projections extending from the main trunk at regular or irregular intervals therealong. The projections may be short, sharp-edged and stubby, as shown in Figs. 1 and 2 of the drawings, or they may be hair-like, as shown in Figs. 3 to 6 of the drawings. They may be disposed at right angles to the trunk of the filament, somewhat as shown in Figs. 1, 3 and 4 of the drawings, or may make an angle less than a right-angle with the trunk, as shown in Figs. 5 and 6 of the drawings. The projections, if hair-like, may themselves be branched, as shown in Fig. 6. The hair-like projections may point in opposite directions with regard to the length of the filament, giving the yarn a matt-like appearance. The filaments may be formed as described in Specifications 924,517 and 927,052.
Patent GB-737526-A (GB)
Title: Stabilized electrical networks
IPC: H03H7/00
Filed: 1953-07-28
Abstract: 737,526. Modifying line circuits to improve transmission. WESTERN ELECTRIC CO., Inc. July 28, 1953 [Aug. 1, 1952], No. 20890/53. Class 40 (4). [Also in Group XL (b)] The instability of a circuit using negative resistances is reduced by using a passive directional transducer, which may be a gyrator, in the circuit. The negative resistance element may comprise a high-speed thermistor as described in Specification 541,604, [Group XL], a semi-conductor element as described in Specification 700,231, [Group XL (c)], a gas diode, e.g. as described in Specification 541,604 or the devices described in an article by E. W. Harold in Vol. 23, No. 10, page 1201 of the Proceedings of I.R.E. As shown in Fig. 8, series negative resistances RN5 and RN6 are introduced at the ends of a gyrator G between terminal impedances ZT1 and ZT2. In a modification, Fig. 9, a negative resistance RN7 is introduced between two gyrators. In a further modification, Fig. 11, shunt-type negative resistances may be used.
Patent GB-656909-A (GB)
Title: Improvements in and relating to colour cinematography
IPC: G03B33/00
Filed: 1948-08-09
Abstract: 656,909. Colour kinematography. BERNARDI, A., and OLYMPIA FILMS (LONDON), Ltd. Aug. 9, 1948, No. 20955. Drawings to Specification. [Class 97 (i)] In an additive system alternate colour selection records are taken successively through complementary or substantially complementary colour filters on a film advanced after each exposure by one half of the normal frame height at twice the. normal frequency, so that each frame contains a pair of colour selection records, a positive film being produced from the negative film, pairs of positive records being projected simultaneously to give superposed images. Both images of the pair may be projected through filters or one through a filter and one without. The projection may be by means of a pair of juxtaposed objectives substituted for the normal objective.
Patent GB-575326-A (GB)
Title: Improvements in or relating to the production of moulded or coated articles
IPC: C08J3/21
Filed: 1943-12-15
Abstract: Urea, phenolic and similar synthetic resinous materials which harden when treated with acid or catalyst are mixed with the acid &c. by means which simultaneously project and effect the mixing in spray or stream form.  Thus, the resinous material in the form of a syrup is projected from a nozzle or gun, and the acid &c. from another nozzle or gun, the two streams from the guns intermingling and falling into a mould, or into a mixing chamber or funnel whence they flow into the mould.  The two nozzles may be mounted on a common device and may be separately adjustable.  Instead of providing two nozzles, one only may be used to project the syrup, an adjustable quantity of the acid &c. being introduced into the syrup immediately prior to its emergence from the nozzle.  The invention may be applied to the production of coatings or layers.
Patent GB-1396217-A (GB)
Title: Defluorination of phosphoric acid
IPC: C01B25/222
Filed: 1973-05-03
Abstract: 1396217 Defluorinating phosphoric acid HOECHST AG 3 May 1973 [4 May 1972] 21079/73 Heading C1A Wet-process phosphoric acid containing 25- 35% by wt. P 2 O 5  and 0À3-2À0% by wt. F is defluorinated by agitating a mixture of the acid with (a) granular calcium metasilicate in an amount 0À2-2 times the amount of F present in the acid, and(b) a soluble Na compound, e.g. NaOH, at a temp. of 30-80‹ C., then allowing the resultant mixture to stand for 10-120 mins. and then separating the precipitated F values. A polymethacrylate flocculating agent may be added to the agitated mixture in an amount of 0À5-2 g./m,<SP>3</SP> of acid. The calcium metasilicate may be the rapidly cooled slag from an electrothermal phosphorus or thermal reduction furnace. The precipitate may be allowed to settle and the clear supernatent liquor separated from the sludge which is recycled to the wet-process, optionally after being placed on a filter used for separating CaSO 4  from processed phosphate ore. The precipitate may alternatively be separated on a vacuum or pressure filter.
Patent GB-773923-A (GB)
Title: Improvements in and relating to buckets and digging teeth assemblies therefor for dragline and like excavators
Inventor: LARSEN PAUL VERNON
IPC: E02F9/28
Filed: 1955-07-21
Abstract: 773,923. Earth-excavating apparatus. ELECTRIC STEEL FOUNDRY CO. July 21, 1955 No. 21184/55. Class 68 (1). Integral with and between the limbs 30, 31 of a V-shaped digging tooth 21 are webs 34 which together with the limbs 30, 31 define wedge-shaped recesses into which enter the complementary shaped fingers 28 of a supporting member 19 that can be secured to the leading edge of an excavator bucket. To draw and hold the tooth securely on the fingers 28, there is mounted on a pin 36, secured in and extending between the webs 34, an eye bolt 38 that extends through an upwardly inclined conical bore 26 in the portion 25 of the member 19 and carries on a threaded portion of the shank 39 of the bolt 38 nut 40 that can abut the rear face 27 of the portion 25.
Patent GB-1526338-A (GB)
Title: Superheterodyne receivers
IPC: H04B1/26
Filed: 1976-05-22
Abstract: 1526338 AFC systems EDDYSTONE RADIO Ltd 16 March 1977 [22 May 1976] 21292/76 Heading H3A A superhet receiver employing a plurality of frequency changers 2, 3 and operating with improved stability over a wide frequency range comprises first and second local oscillators 5, 6 associated with the frequency changers and an arrangement 8-15 for determining the frequency difference between the two oscillators and providing a control signal to one of the oscillators to maintain the frequency difference constant. In operation, under the control of pulses from a master clock 11, a subtraction of the counts corresponding to the two oscillator output frequencies is effected over two count periods in an arrangement including stores 8, 9, 12 and the resulting difference is applied via a further store 13 and a D/A converter 14 to control the oscillator 6.
Patent GB-1268073-A (GB)
Title: Improvements in or relating to energy loss fluid controls
Inventor: SELF RICHARD ERNST
IPC: F16L55/027
Filed: 1969-04-25
Abstract: 1,268,073. Valves. R. E. SELF. 25 April, 1969 [6 May, 1968; 22 Nov., 1968], No. 21297/69. Heading F2V. [Also in Divisions F1 and G2-G3] A fluid flow regulator comprises a stack of discs each having labyrinth passages as illustrated in Figs. 2-9 (not shown) to provide a number of parallel connected radial flow paths which weave between adjacent discs. The discs can be incorporated in a valve 10 in which movement of piston 12 varies the number of flow paths in circuit between inlet 13 and outlet 15. In a modification (Fig. 11, not shown) a relief valve piston (74) is moved against its loading spring by inlet pressure to vary the number of flow paths. In another modification (Fig. 12, not shown) the piston is moved by a solenoid and is combined with a conical silencer (see Division F1). Specification 1,193,980 is referred to.
Patent GB-825067-A (GB)
Title: Sphere winding machine
IPC: B21F17/00
Filed: 1956-07-10
Abstract: 825,067. Winding and reeling. SPECIALTIES DEVELOPMENT CORPORATION. July 10, 1956 [Sept. 9, 1955], No. 21312/56. Class 83 (4). [Also in Groups XXV and XXVIII] A machine for covering a sphere with wire comprises a spindle supporting the sphere, wire applying means adapted to move in a substantially circular path about the sphere in a diametral plane thereof, means for tilting the spindle in a plane perpendicular to, and passing through a diameter of, the circular path about an axis lying in the first-mentioned plane and passing diametrically through the sphere, the means including an arm in the form of a casing parallel to the spindle having a hollow shaft at one end in alignment with the aforementioned axis for pivotally mounting the arm, and means including a tube perpendicular to the arm for mounting the spindle at the other end of the arm, and means for rotating the spindle to rotate the sphere about an axis perpendicular to the firstmentioned axis, the spindle rotating means including a drive shaft extending through the hollow shaft and driven mechanism carried by the arm and within the casing and extending through the spindle mounting means. Wire is fed by a roller 44 on an arm 42 which describes a circular path about a sphere so as to wrap great-circles on the sphere. The sphere is mounted on a spindle 25 driven by gearing through a shaft 35, chain 33 and shaft 29 and is tilted about an axis coincident with the shaft 29 by giving the hollow shaft 28 an oscillation derived from the rotation of a grooved drum which causes a slide carriage in the form of a gear rack to rotate in alternate directions a gearwheel and chain and thus a gear on the shaft 28. A counterweight is preferably provided to balance the weight of the sphere. The machine may include means to programme the operations to produce a predetermined number of layers of windings. Specification 777,588 is referred to.