baber/WOPTO huggingface dataset:
Patent GB-713430-A (GB)
Title: Improvements in or relating to photo-sensitive or secondary electron emitting surfaces
Inventor: SOMMER ALFRED HERMANN
IPC: H01J29/38
Filed: 1950-12-19
Abstract: 713,430. Cathode materials and processing. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Dec. 6, 1951 [Dec. 19, 1950], No. 30858 / 50. Drawings to Specification. Class 39(1) A photo-sensitive or secondary-electron-emitting surface comprises a silver layer on which is deposited a bismuth layer. The support may consist of a metallic or insulating plate or mesh which is transparent or opaque such as the glass end wall of an image orthicon or the glass or mica plate which carries on one side a transparent metal coating to join the mosaic signal electrode of a cathode potential.stabilization tube. The silver and bismuth layers may be evaporated on to the support until the light transmissions drop respectively to 70 and 50 per cent. The silver may be oxidized by a discharge in oxygen before the bismuth is deposited, or a further coating of silver may be deposited; the bismuth may be oxidized through the silver by the' introduction of oxygen or both the silver and bismuth may be oxidized by a discharge in oxygen. The surface is activated with caesium. A mosaic may be formed by evaporating the metals through a stencil or by aggregating the layers by heat.
Patent GB-496979-A (GB)
Title: Improvements in lighting fittings
IPC: F21S8/00
Filed: 1937-11-10
Abstract: 496,979. Lighting fittings. HOLOPHANE, Ltd., and ENGLISH, S. Nov. 10, 1937, Nos. 30866/37 and 642/38. [Classes 75 (ii) and 75 (iv)] In lighting fittings as shown refractors with prismatic ribs parallel to an elongated light source 1, refract the light into downward and upward beams, the latter being then reflected down. Plates 7 seated against flanges 6 in refractors 2 keep them free from dust. 11 is a heat conserving enclosure. The reflectors may be of metal, or plane and adjustable about an axis 38, the cylindrical refractor in two parts joined by a metal band 14, and the light source an electric discharge lamp or row of gas mantles.
Patent GB-832164-A (GB)
Title: Reversible propeller
Inventor: WANZER ARTHUR WILLIAM
IPC: B63H5/10
Filed: 1958-09-26
Abstract: 832,164. Reversible dual propeller units. MURRAY & TREGURTHA Inc. Sept. 26, 1958, No. 30872/58. Class 114. In a dual propeller unit comprising a supporting structure 12, a pair of propellers 14, 16 supported from the structure in spaced relation to one another to turn on a common axis 10, and driving means connected with the propellers (via shaft 18 and bevel gears 20, 22) to drive same as a unit reversibly in either direction, the blades of the two propellers are of the same hand and have oppositely disposed propelling surfaces forming each blade, the propelling surfaces 30, 40 of the blades facing one another have the same pitch angle and the propelling surfaces of the blades 32, 42 facing outwardly away from one another are set at a higher pitch angle than said facing surfaces so that the leading edge (26) of each blade of one propeller (16) for one direction of rotation of the dual propeller unit is formed with a relatively thick section which tapers gradually to a thin section at the trailing edge (28) of said blade, and the leading edge (44) of each blade of the other propeller (14) for an opposite direction of rotation of the dual propeller unit is formed with a thick section which tapers gradually to a thin section (46) at the trailing edge of said blade.
Patent GB-493584-A (GB)
Title: Method of manufacturing calcium arsenate
IPC: C01G28/02
Filed: 1937-11-11
Abstract: Calcium arsenate, suitable for use as an insecticide, is obtained by heating to about 600-800 DEG  Ca, a mixture of calcium nitrate such as "Norwegian Saltpetre" arsenious acid, and calcium oxide, hydroxide, carbonate or other suitable calcium compound, the proportions of which may be varied to produce a calcium arsenate of varying composition.
Patent GB-1189717-A (GB)
Title: A Shearing Head for a Shaver.
Inventor: FUTTERER BODO
IPC: B26B19/04
Filed: 1967-07-05
Abstract: 1,189,717. Dry shavers. GILLETTE CO. 5 July, 1967 [6 July, 1966], No. 31036/67. Heading B4B. A shearing head for a shaver comprises an inner foil i<SP>1</SP>. Fig. 4, and an outer foil a, Fig. 2, each of which has cutting openings and each of which is bent to provide flanges, the inner foil having cutting teeth 2 which co-operate with slots 3 in the outer foil. The outer foil may have secured to one of the flanges 4, 4<SP>1</SP> thereof a comb-shaped cutting member (19), Fig. 7 (not shown), the gaps between the teeth (21) of which are in register with the slots 3 of the outer foil. The flanges of the foils are secured under tension between members (9, 10), Fig. 3 (not shown), and 11, 12 by means of screws or studs (8<SP>1</SP>) and 8 respectively. The inner foil is pressed against the outer foil by a spring (16), Fig. 5 (not shown), and has coupled thereto a pin (14) the support (18) of which is reciprocable by means of a driving motor.
Patent GB-728935-A (GB)
Title: Optical focussing aid
Inventor: LOEBSTEIN HEINRICH
IPC: G02B27/40
Filed: 1952-12-08
Abstract: 728,935. Focusing aid for optically-projected images. GNOME PHOTOGRAPHIC PRODUCTS, Ltd. Nov. 19, 1953 [Dec. 8, 1952], No. 31048/52. Classes 97 (1) and 98 (1). A focusing aid comprises two similar plates making intimate contact along one edge, each plate having at this edge a pair of adjacent wedge-shaped recesses tapering to opposite sides of the plate so that when the plates are brought together with the recesses in register, a pair of adjacent mutually inclined slots is defined. Preferably the aid is mounted on a slide adapted to support a transparency carrier in a photographic enlarger or optical projector so that the aid and transparency can be brought successively on to the axis of the projection lens. As shown, the focusing device comprises a pair of abutting metal plates 1, each provided with a pair of adjacent oppositely-disposed identical wedge-shaped recesses and arranged so that the recesses on each plate co-operates with those on the other to form oppositelydirected parallel-sided slots, and is carried on a mount, which is slidable across the axis of the enlarger and which also bears the transparency holder of the enlarger comprising a pair of glass plates sandwiching the transparency, by a resiliently-mounted arm vertically adjustable by a screw to bring the medial horizontal plane of the device into the plane of the image-. bearing layer of the transparency.
Patent GB-1304959-A (GB)
IPC: C08F8/20
Filed: 1970-06-26
Abstract: 1304959 Chlorinating PVC BADISCHE ANILIN- & SODA-FABRIK AG 26 June 1970 [27 June 1969] 31081/70 Heading C3P PVC is chlorinated as a dry powder in two stages, the first at a temperature below the softening point in the presence of light, the second, longer stage above the softening point in the absence of light. A fluidized bed or rotating tube is used. The first stage may be at 60-70 C. with light of wavelength 4000-5500  for 30-60 minutes and the second at 90-110 C. for 2-4 hours using a powder of size 100-600 microns.
Patent GB-1472725-A (GB)
Title: Automatic gas lighters
IPC: F23Q2/16
Filed: 1975-07-25
Abstract: 1472725 Gas lighters ETABS GENOUD & CIE 25 July 1975 [24 Sept 1974] 31097/75 Heading F4F An automatic gas lighter comprises a lid 3, a heat-sensitive lever 6 pivoted at 7 and connected to the lid at 8, the lever having a cup 4 at one end which partly surrounds the burner valve 4, and a hook 11 engageable under a shoulder 12 of the valve, but disengageable therefrom under the effect of deformation of the hook due to heat of the flame. Pivot pin 8 may be replaced by bosses and recesses.
Patent GB-487048-A (GB)
Title: Improvements in or relating to radiogoniometers
IPC: G01S3/12
Filed: 1936-11-14
Abstract: 487,048. Directive wireless signalling. JEFFCOCK, J. 'P. Nov. 14, 1936, No. 31125. [Class 40 (v)] In a direction-finding system comprising open and closed aerials arranged to give both sense and direction indications, the 90‹ separation between the minima of the cardioid and " figure eight " curves on switching from sense to direction is avoided by interchanging the connections between the closed aerial and the radiogoniometer field coils. Quadrantal (or site) error is connected by a cam mechanism. Fig. 2 shows a Bellini-Tosi system with two field coils 3 and 4 and a single search coil 6. For sense determinations the signal in the search coil 6 is combined with the signal from the non- directional aerial 8 through the transformer 10 giving a cardioid characteristic as shown in Fig. 3b. For " direction " the non-directional aerial is uncoupled and the connections between the directional aerials and field coils are interchanged by the sensing switch 5. The resulting " figure eight " characteristic is thus rotated through a right-angle so that its minima as shown in Fig. 3a are coincident with the minimum of the cardioid. To correct for quadrantal (or site) errors, the radiogoniometer dial is advanced or retarded relative to the search coil spindle 21, Fig. 6, the amount being determined by a bell-crank 34 pivoted at 38 and carried on an arm 39 rigidly fixed to the spindle 21. One end of the bell-crank bears against a cam plate 41 and the other end 35 engages a radial slot 36 in the member 37 carrying the dial.
Patent GB-1356104-A (GB)
Title: Filtering devices
IPC: B01D29/15
Filed: 1970-06-26
Abstract: 1356104 Edge filters STELLA-META FILTERS Ltd and J F ANNETT 22 June 1971 [26 June 1970] 31241/70 Heading BID An annular, inward flow edge filter intended to support a filter aid layer comprises a stack of flat washers or a helical coil of flat sectioned strip, the washers or turns of the coil being spaced apart by projections 12 which extend from one flat face thereof, and these projections are semi-circular in form and extend across less than 60%, preferably less than 50%, of the radial width of the washers or coil, outwards from the inner periphery. This construction ensures an even coating of filter aid on the outer periphery of the filter. Washers as in Fig. 1 are made by cutting and stamping a helical coil into closed split-rings. A helical coil (Figs. 3, 4, not shown) is wound after flattening and forming the projections on a wire in one or two operations, the coil being supported in use by an internal array of rods (26).
Patent GB-382435-A (GB)
Title: Improvements relating to alternating current telegraph systems
IPC: H04M11/06
Filed: 1931-11-12
Abstract: 382,435. Code telegraphy. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and CRUTCH, L. S., 15, Mundania Road, East Dulwich, both in London. Nov. 12, 1931, No. 31354. [Class 40 (iii).] When alternating-current telegraphy is interfered with by telephone or like currents, telegraphic reception is automatically stopped and an alarm is given. In one arrangement Fig. 1 (not shown), the line is connected to three elements in parallel, viz. the receiver, the transmitter and a rectifier in series with an alarm relay. The relay is screened by a filter from the telegraph currents, but is operated when currents of other frequencies (such as voice-current components) occur. The switch operates four contacts which cut off the receiver, light an alarm lamp, change the frequency of the transmitter oscillator, and connect up the transmitter so that it holds the switch on. In another arrangement, Fig. 2, a.c. signals from line L are conveyed through transformers T, T1, T2, to a receiver RA and a balancing circuit L, C, R, whose impedance is equal to that of the receiver at the telegraph frequency. When signals of other frequencies arrive, the balance is upset and switch S is operated. cutting in the alarm lamp at s1, changing the frequency of the transmitter oscillator LO at s2 so that the oscillator can hold on the switch S, closing a circuit for this latter purpose at s3, and cutting off the receiver RA at s4. The holding-on oscillations from the transmitter oscillator LO affect the switches S at both home and distant stations, and the keys K at both stations must be opened to restore the switch. The resistance PQ may be omitted. A separate alarm oscillator may be provided, the means for altering the frequency of the transmitter oscillator being in that case omitted.
Patent GB-191005-A (GB)
Title: Improved apparatus for absorbing gases or vapours by means of charcoal
IPC: B01D53/06
Filed: 1922-11-16
Abstract: 191,005. Farbwerke vorm. Meister, Lucius, & Br³ning. Dec. 30, 1921, [Convention date]. Addition to 187,223. Purifiers; purifier waste, revivefying. - The apparatus described in the parent Specification for absorbing gases in charcoal, recovering the absorbed product, and preparing the charcoal for re-use in a continuous manner is modified bv so constructing the partitions that the system forms a series of single vessels arranged in a ring. Various forms which the vessels and their connections may assume are shown in Fig. 1, the fluids being introduced into the vessels I, II, III, IV bv the pipes e carried in a central rotating cylinder c, which mav be made to undergo intermittent movement instead of continuous rotation. In a further modification, the charcoal carrier and the supply pipes are rigidly connected and the entry of the various fluids required brought about by periodic operation of the respective valves. As shown in Fig. 2 the valves 2, 3, 4, 5, 6 control the feeding and collecting pipes leading to and from the absorption vessels 1, these vessels being placed on the circumference of a circle around a rotating cam-shaft 7. Gas to be treated leaves the feeding pipe A and enters the vessel 1 through the valve 5, the valves 2 and 6 being shut. The gas issues through the valve 3 and cooler 8 into the collecting pipe B and thence passes through the valve 9 into the outlet-pipe C. Rotation of the cam-shaft opens the valves 2, 6 for inlet and egress of steam respectively, and shuts the remainder, the vapours being conducted from the pipe E to the condenser. Further rotation of the cam-shaft permits the cooling of the absorption vessels with puified gas. The valve 9 is throttled to produce an increased pressure in the collecting pipe. B, from which purified gas emanating from the other vessels, passes through the vessel to be cooled. The gas from this operation finally passes through the valve 3 and cooler 8 into the outlet-pipe C.
Patent GB-752543-A (GB)
Title: Improvements in and relating to gyratory crushers
Inventor: GRUENDER OSCAR C
IPC: B02C2/00
Filed: 1954-10-29
Abstract: 752,543. Gyratory crushers. NORDBERG MANUFACTURING CO. Oct. 29, 1954, No. 31392/54. Class 59. [Also in Group XXXIV] In a gyratory crusher having a crushing head 20 which is gyrated by means of a rotatable, eccentrically-apertured sleeve 16 and which supports a feed assembly, the latter comprises a rotary feed plate 56, Fig. 2, and a gear train 47, 50, 51, 52, and mounted for rotation with the sleeve 16 is a hollow element 30 by which lubricant may be supplied to the gears. The feed plate 56 is mounted upon and closes the top of a housing 45 connected to the head 20 and within which the gear train is located. The element 30 is connected to the gear 47 through the intermediary of discs 32, 33, 34 having rib and slot connections, those between the discs 32, 33 being perpendicular to those between the discs 33, 34. Oil passages are provided in the opposed surfaces of the discs 32 to 34. The sleeve 16 surrounds a shaft 5 having an axial passage 5c, Fig. 1, to which oil is supplied from an inlet pipe 9 the oil passing radially outwardly through a passage 5d to a circumferential passage 5x. The oil may then rise through a passage 16x to the inner surface of the sleeve 16. It then passes through a radial passage 16y to a circumferential passage 16z about the exterior bearing surface of the sleeve 16. From the circumferential passages 5x, 16z, oil flows upwardly and downwardly between the sleeve 16 and shaft portion 5b and between the outside of the sleeve and the inner bearing surface of the head portion of a sleeve 22. The oil which flows downwardly provides lubrication for the thrust bearing 4x, Fig. 1, which supports the sleeve 16. The oil which escapes upwardly from the top of the inner bearing surface of the sleeve i.e. above the top of the shaft portion 5b flows through the interior of the element 30 and through communicating axial passages 30b, 33b, 34e, 52d, Fig. 2, to the top of a plate 57 connected to the feed plate 56. It then flows downwards to lubricate bearings 52b, 52c. The oil which escapes from the top of the outer bearing surface of the sleeve 16 and the oil from the gear housing fill a cavity 16g, Fig. 2. This oil then escapes by gravity through a discharge duct 21x and lubricates the bearing formed by opposed members 21a, 26a. Any excess oil from the cavity 16g flows through discharge passages 22x and is returned to the interior of the crusher and, eventually to the oil tank by the outlet pipe 9a. In a modification. Fig. 7, oil is conveyed from the circumferential passage 5x through holes 100, 101 to a passage 102 from which it is conveyed to an opening in the upper end of a hollow element 130, corresponding to the element 30, by means of a pipe 103. Rapid escape of hot oil is provided by a series of holes 110 (not shown) which lead through radial passages 111 (not shown) to the cavity 16g. Specification 720,528 is referred to.
Patent GB-422898-A (GB)
Title: Improvements in or relating to mercurial pressure gauges
IPC: G01L7/18
Filed: 1934-11-01
Abstract: 422,898. Liquid-level pressure gauges. COSSOR, F., Accoson Works, Vale Road, Finsbury Park, London. Nov. 1, 1934, No. 31426. Addition to 395,153. [Class 106 (ii)] The parent Specification, which comprises a U -tube gauge of which one limb is formed as a cistern and the other as a pressure tube, a valve being provided between the tubes, is modified by operating the valve by means of a longitudinal movement of the pressure tube brought about by means of a screw cap at the other end of the pressure tube. The valve e is urged against a seat d in the base by a spring f housed in a screw plug g. The valve has a tubular extension i with a lateral aperture j. The screw cap m in the position shown in Fig. 1 has a collar which prevents the inner face of the cap from quite engaging the end of the pressure tube. When the cap is unscrewed and turned about so that the recess r faces the end of the tube it may be screwed further into the casing a and a washer s screwed against the end of the tube to force the latter down until the lower end abuts against a washer and moving down against the extension i opening the valve.
Patent GB-387783-A (GB)
Title: Improvements in or relating to containers for cold foods or the like
IPC: A47G23/04
Filed: 1931-11-14
Abstract: 387,783. Cooling-receptacles ; cooling-mixtures. ELECTROLUX, Ltd., 153, Regent Street, London.-(Assignees of Platen-Munters Refrigerating System Aktiebolag ; 2, Norrmalmstorg, Stockholm.) Nov. 14, 1931, No. 31575. Convention date, Nov. 17, 1930. [Class 29.] In a jacketed metal cooling-vessel for use as a cocktail shaker, fruit bowl, &c., or for immersion in a liquid to be cooled, the jacket contains a substance of definite melting point, between +10‹ C. and -10‹ C., and a boiling point not lower than that of water, and which is solidified in a refrigerating plant each time the vessel is required for use. The vessel may be made of German silver and the cooling substance may be an organic liquid such as m-creosol, dimethylaniline, o-dibrobenzene, o-chloraniline, bromnaphthalene, o-anisidine, p-anisaldehyde or aqueous solutions of magnesium sulphate, sodium carbonate, sodium sulphate, or sodium phosphate. In an example, a cocktail shaker comprises a double-walled container 10, the jacket being filled up to nine-tenths of its volume with the cooling substance and sealed. The container is surrounded by a removable insulating sleeve 11, such as artificial resin, and is closed by a plug 12. Another vessel comprises a jacketed funnel-like member, Fig. 2, fitted with a removable helical strip 17, the liquid to be cooled being poured into the funnel and flowing over the strip. A jacketed drinking vessel, Fig. 6, has a stem screwing into an insulated base member or handle 11. The vessel is preferably of German silver and the base may be of the same or different material.
Patent GB-409413-A (GB)
Title: Improvements in and relating to methods of fixing lettering, signs and the like to facias and the like
IPC: G09F7/16
Filed: 1932-11-09
Abstract: 409,413. Screw sockets. WITTAMORE, F. J., 11, Woodville Road, Walthamstow, London. Nov. 9, 1932, No. 31668. [Class 89 (i).] A method of fixing signs by sockets or engaging corresponding projections on the back of the sign is characterized in that the projection is secured in the socket by a screw tapped into the side of the socket. As shown in Fig. 2, a sign plate 1 is secured to a facia 3 by a stud 2 engaging a socket 4 provided with a screwthreaded shank 5, the stud being secured by a screw 7. Fig. 3 shows a cement brick facia in which the socket 4 is provided with a split shank 5. In Fig. 4, the sign is secured to a facia 3 mounted on a wooden support 11, the socket shank 5 being screwed into a hole in a metal plate 8 secured to the support 11. The sockets may be in screw-threaded engagement with their shanks.
Patent GB-1525001-A (GB)
Title: Nonwoven fibrous networks
IPC: B29D1/00
Filed: 1975-07-29
Abstract: 1525001 Forming non-woven fabrics by film fibrillation H W KEUCHEL 29 July 1975 [23 Aug 1974] 31715/75 Heading D1R [Also in Division B5] A non-woven fibrous network, is produced by extruding a mixture of a molten thermoplastic polymer and a foaming agent radially outwardly through a circular die 2, quenching the extrudate by opposed air supplying rings 4a, 4b to lower its temperature below its melting point, optionally heating the extrudate to between its glass transition temperature and its melting point by passage over heated ring 5 and radially stretching the extrudate by passing it over a coal ring or rolls 6. The draw ratio A/B may be 1.5 : 1 to 8 : 1. The angle α at which the network passes over the coal expansion ring is 75 to 125. The fibres of the product are of irregular cross-section and uniaxially orientated and the junction points are preferably of flat cross-section and biaxially orientated. In example 4 the biaxial radial stretching is followed by linear stretching between cooled ring 6 and wind-up means not shown. Two or more concentric circular dies may be used to extrude multiple cylindrical networks which are simultaneously quenched and drawn. The polymer may be high density polyethylene or polypropylene, polymers or copolymers of ethylene, propylene, butene, methyl-3-butene, styrene, vinyl chloride, vinylidene chloride, tetrafluoroethylene, hexafluoropropylene, methyl acrylate and methyl methacrylate, nylon 6, nylon 66, thermoplastic polyurethane, polyethylene terephthalate, polycarbonate, a polyacetal and cellulose acetate, propionate or butyrate. The foaming agent comprises 0.25 to 10% by weight of the polymer. Many gases, organic liquids and organic and inorganic solids which decompose on heating to give gases are specified. In example 1 polypropylene of melt index 12 is blended with 1% of azodicarbonamide and extruded through a 13 inch diameter radial die at a temperature of 396-400F. The extrudate is cooled by air at 80F from tubes 4a, 4b. It is then heated to 200 to 300F by ring 5 then passed over a 30.5 inch diameter ring 6 maintained at 48F by circulating water. The cylindrical network is collapsed to a 0.6 oz/yd<SP>2</SP> double layer. It has machine direction/transverse direction tensile strength ratio of 6:1. It may be embossedbonded or used as a quilting scrim, a fusible scrim 1 a carpet backing or converted to yarns and staple fibres.