baber/WOPTO huggingface dataset:
Patent GB-591854-A (GB)
Title: Phase-shifting arrangement for oscillating electrical currents
IPC: H03H7/18
Filed: 1944-02-18
Abstract: 591,854. Valve circuits. STANDARD TELEPHONES & CABLES, Ltd. Feb. 18, 1944, No. 3112. Convention date, April 3, 1943. [Class 40 (v)] [Also. in Group XXXV] In a phase-shifter suitable for use in an Adcock array in which the receiver is remote from the aerials, two isochronous voltages are transmitted over two lines 160, 162, of unequal length, and applied in combination to a receptor 112, so that the phase of their resultant can be varied by varying their relative magnitude. In the embodiment shown the cathode of a cathode-follower tetrode 114 is earthed through a resistance 136 and its anode is earthed through an equal resistance 137 and blocking condenser 144, so that the high-frequency signals applied to the legs of the line 160, to which the resistance 136 is matched, have equal and opposite voltages with respect to earth. The valve 116 and line 162 are similarly connected, and signals from a source 118 are applied to the control grids of the two valves in parallel. The strengths of the signals thus sent over the lines 160, 162 are adjusted separately by means of potentiometers 150, 152 and jointly by means of a potentiometer 146, the shielding-grid potentials of the tetrodes 114, 116 being thereby regulated. The phase of the resultant voltage applied to the receptor 112 depends on the relative magnitudes of the two components, which are out of phase with one another owing to the inequality of the lengths of the lines, and its magnitude may be kept constant by ganging the potentiometers. The range of variation of phase is extended to 180 degrees by providing a reversing-switch 169 in the line 160, and still further by also coupling the source 118 to the valve 114 through a phase-shifter 117, 119. Remote control may be provided by locating the potentiometers 146, 150, 152 with the receptor 112. The source 118 may be a receiving aerial and the receptor 112 a wireless receiver, the circuit may be simplified by omission of the anode resistors 137, 139 with a consequent restriction of the phase-range, and the lines 160, 162 may be coaxial, Fig. 2 (not shown). Specification 591,867 is referred to.
Patent GB-103890-A (GB)
Title: Improvements in or relating to Photographic Processes.
Inventor: CHRISTENSEN JENS HERMAN
IPC: G03C5/40
Filed: 1916-03-01
Abstract: 103,890. Christensen, J. H. March 1, 1916. Photomechanical printing-surfaces; C o l o u r photography; toning and after-treatment. - Porous silver-sensitized films are treated, after exposure and development, with substances which react with the unaltered silver compounds to produce a substance capable of filling the pores of the film; the resulting film, which varies in porosity in proportion to the light action, may be used to produce pictures or photomechanical printing-surfaces. The sensitive film may be a dry collodio-silver-bromide film rendered porous by the presence of glycerine, benzoic acid, pyrocatechin, or other soluble substance, or a gelatine film, and may be treated with solutions of alkaline sulphides containing an excess of sulphur, sulphostaunates, Schlippe's salt, or similar substances which readily give off sulphur, or iodides or rhodanides. The sulphur compounds may be mixed with a solvent for silver salts such as a rhodanide, with bromides or bichromates to increase the pore-filling effect, or with iodides or basic reacting substances to reduce it. Printing- plates for producing colour photographs from separate colour-record or multicolour-screen negatives may be prepared with colloid films containing dyes upon which collodio-silver-bromide films are deposited. After development and treatment, the plates are used to print superposed colour images on paper or transparent film by means of the dyes contained in them. Alternatively, the plates may be initially free from dye and be soaked in dye previous to being used for printing. Correct register in the production of prints from multicolour-screen negatives may be obtained by placing the printing-plates in frames having holes into which project pins on frames containing the negatives and the material to be printed on. The films may be used as etching- resists in the production of photomechanical printing-surfaces. Specification 25419/13 is referred to.
Patent GB-181762-A (GB)
Title: Improvements in or relating to systems of raising liquids
IPC: F04F1/02
Filed: 1921-01-25
Abstract: 181,762. Allen, T. G. Jan. 25, 1921. Direct air-pressure apparatus, automatic; aircompressing devices, application of; raising by stages.-A system of raising liquid to a reservoir E by means of static pressure obtained from a canal &c., a portion 1 of which is at a higher level than the rest 2, comprises a tank A, which is alternately emptied and filled under the influence of the static pressure resulting from the head of water due to the difference in water levels, and is connected by an air pipe B to a closed container C, arranged above the level of the liquid to be raised, and connected by a pipe C<1> to said liquid and by another pipe C<2> directly or indirectly to the reservoir E. In the form shown, the container C delivers to an open vessel D from which another closed container C<x> draws by a pipe C<1x> and then delivers to the reservoir by a pipe C<2x>. The chamber A discharges through a valved pipe or a siphon A<2> and thereby creates a vacuum in the pipe B and chambers C, C<x>. Liquid then enters the containers C, C<x> by the pipes C<1>, C<1x>. When the liquid ceases to flow from the siphon A<2> on to a plate F<2> carried by a lever F, a counterweight F<1> turns the lever and opens a valve. A<3> controlling the supply of liquid to the chamber A. As the chamber fills, the air in the pipe B is compressed and forces the liquid out of the containers C, C<x> into the tanks D, E. The bent pipes A<1>, A<2>, C<1>, C<2>, C<1x>, C<2> form water seals and may be replaced by pipes with non- return valves.
Patent GB-433041-A (GB)
Title: Improvements in window stays
IPC: E05C17/18
Filed: 1934-01-30
Abstract: 433,041. Stays. WHIDBOURNE, H., Firwood, Reading Road West, Farnborough, Hampshire. Jan. 30, 1934, No. 3142. [Class 65 (i)] A window stay comprises a bar having a longitudinal slot with a number of spaced holes for engagement with a pin which has a collar at top and bottom, the top collar preventing disengagement of the bar and being spaced from the bottom collar by a distance greater than the thickness of the stay-bar, so that the bar can slide on the pin when it is between the collars. In the form shown, the stay 1 is of box section, with the slot 11 and holes or enlargements 15 formed in its under side ; the pin 4, slidable in the slot 11, has a collar 13 larger than the holes 15 to prevent detachment of the stay and a lower collar 14 to fit the holes 15. The stay is normally held by gravity so that one of the holes 15 engages the collar 14, and when it is required to move the window the stay is raised to the position shown in Fig. 3 so that the slot 11 can move over the narrow part of the pin 4. A channel 9 fixed at the base of the pin 4 receives the stay-bar when the window is closed, to act as a fastening in place of the usual second pin ; in a modification this channel is pivoted on the pin and receives the stay-bar in all positions to prevent splaying thereof. The stay-bar may be hinged at suitable points so as to be foldable if desired. Reference has been directed by the Comptroller to Specifications 15201/06, 13805/08, [both in Class 65], and 108,219, [Class 65 (ii)].
Patent GB-512123-A (GB)
Title: Improvements in and relating to sockets for electric lamps and the like
IPC: H01R33/76
Filed: 1939-01-30
Abstract: 512,123. Two-part couplings. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 30, 1939, No. 3147. Convention date, Jan. 28, 1938. Addition to 500,411. [Class 38 (i)] A holder for a lamp &c. 1 consisting of a base 8 of porcelain &c. containing contacts 10 and resilient locking plates 14 into which the pin contacts 4 on the lamp &c. pass by longitudinal and rotary movements, and having a seating 19 upon which fits a shoulder 19a on the lamp &c. as described in the parent Specification, is provided on this seating 19 with a bearing ring 25 of antifriction metal, such as Babbitt metal.
Patent GB-215091-A (GB)
Title: Improvements in mounting diamonds or the like in the cutting surfaces of turning and boring tools or the like
IPC: B23B27/20
Filed: 1923-02-02
Abstract: 215,091. Fawcus, G. H., and Harrison, R. Feb. 2, 1923. Diamond and like tools. - In a diamond or like tool for turning, boring &c., the diamond &c. b is held in place on an iron or steel shank a by an electrolytically deposited matrix c of iron. The electrolyte employed consists of a neutral solution of ferrous ammonium sulphate, and the anode consists of annealed Swedish iron, charcoal iron, &c. The stones may be held in place during the electrodeposition by muslin, light cotton canvas, &c., and parts not requiring the deposit may be coated with varnish &c. The current is arranged to give a density of about one tenth of an ampere per square inch. According to the Provisional Specification, the invention may be employed for the production of tools used for sinking boreholes.
Patent GB-215422-A (GB)
Title: Improvements in and connected with trailers for motor and other vehicles
IPC: B62D7/02
Filed: 1923-02-02
Abstract: 215,422. Jones, T. A. Feb. 2, 1923. Compound or articulated road vehicles. Relates to a compound vehicle in which the front end of a trailer is supported from the rear of a tractor by a universal joint comprising spherical shells fitting one within the other. In the construction shown in Fig. 1, the trailer 2 carries a part spherical shell 1 which rests in a similar shell 3 on the tractor centrally above the rear axle, the two being connected by a pin 6 which may be fitted with a spring to force the two shells together. The hole in the shell 3 is large enough to allow free movement in all directions. The spherical shells may be inverted. In a modification shown in Figs. 6 and 7, the universal joint may be arranged between the trailer 2 and an intermediate frame 9 carried by springs 10 directly on the axle 4. The spherical element 3 (on the tractor) is formed forwardly and rearwardly with recesses for trunnions 13 attached to the other spherical element. Parts 14 may serve as knife, edge or curved bearing elements. Several radial springs may be provided tending to retain the spherical elements in their central positions.
Patent GB-770292-A (GB)
Title: Improvements in or relating to protective devices for cooking stoves
IPC: F24C15/36
Filed: 1955-02-02
Abstract: 770,292. Guards for cooking stoves. MOORE. G. E. Feb. 2. 1955 [Feb. 3, 1954], No. 3214/54. Class 126 A protective device for a cooking stove comprises a grille detachably secured to the top of the stove so as to project upwardly and outwardly from the front and sides of the stove and having a curved portion along its lower edge to screen the gas taps of a gas stove. A grille comprising a frame 1 constructed of steel rod and a wire-mesh screen 2 is arranged to project upwardly and outwardly from the top of the stove at a small angle so that pans must be placed on the stove with their handles in a safe position. The bottom edge 4 of the front of the grille is curved to screen the gas taps 5, so that they can only be reached over the top of the grille. Strips of metal 6, secured to the sides of the grille, rest on the upper edge of the stove top, and coil springs 7 and clips 8 hold the grille in position. The grille may be in one or more parts, and may be attached to the stove by screw clips or spring clips.
Patent GB-211147-A (GB)
Title: Process and means for taking and projecting pictures in natural colours
IPC: G02B27/12
Filed: 1924-02-07
Abstract: 211,147. May, H. Feb. 8, 1923, [Convention date]. Colour photography. -Apparatus for taking pictures in natural colours comprises an objective working in conjunction with pyramoidal separating and defecting means to produce a. set of coplanar component colour images. The apparatus may also be used for projecting in superimposition a set of such images. The apparatus shown comprises an objective a, a compound separating prism, x<1>, and a compound deflecting prism x<11>. The system x<1> comprises a basic prism 1 with its refracting edge 5 and base 2 at right angles to the axis A of the objective, its base 2 facing the objective. Mounted on the sides of this prism are prisms 10, 11, the refracting edges 15, 16 of which lie in a plane containing the axis A and at right angles to the edge 5 of the basic prism 1. The faces of the prisms 10, 11 may be extended to intersect in edges 17, 18 lying in a plans containing the axis A and the edge 5. Colour filters are arranged on these faces, or for tri-colour work three faces carry colour filters and the fourth an opaque layer or neutral grey filter. The system x<11> has its plane base parallel to the base 2, and its inclined faces parallel to the corresponding faces of the system x<1>. The edges 35 - - 38 meet on the axis A and are parallel to the edges 15 - - 18 of the system. The pencil of light emerging from the objective a is split by the system x<1> into four divergent pencils which, after passing through the colour filters, are deflected by the system x<11> to form contiguous component colour images on a photographic film b at right angles to the axis A. Conversely, the component colour images on a diapositive printed from the film b after development may be projected in the reverse direction through the system to produce an image in natural colours on a screen. The positions of the objective a and film b may be reversed.
Patent GB-179253-A (GB)
Title: Improvements in and relating to valves for internal combustion engines
IPC: F01L7/02
Filed: 1921-01-27
Abstract: 179,253. Shirley, F., and George, J. W. Jan. 27, 1921. Pressure - increasing devices. - In a rotary valve for internal - combustion engines comprising an exhaust passage f surrounded by an inlet passage e, the explosive mixture enters the passage e by central ports d, and the induction of the fluid is increased by means of fan-like blades e<1> formed on the valve between the ports d.
Patent GB-247208-A (GB)
Title: Improvements in means for regulating the speed of revolution of electrically driven ring spinning or doubling frames
IPC: D01H1/30
Filed: 1926-02-05
Abstract: 247,208. Akt.-Ges. Brown, Boveri, et Cie. Feb. 6, 1925, [Convention date]. Driving arrangements.- In electrically driven ring spinning and doubling frames wherein cams c<1>, c<2> operate a system of levers connected to the regulator of the motor and respectively impart thereto the motions necessary to give the speed variations corresponding to the reciprocation and to the translation of the ring rail, devices are embodied in the lever mechanism whereby the motions imparted by the cams may be varied during the operation of the frame. The amplitude of the periodic change of speed corresponding to the rise and fall of the ring rail is varied by adjusting the lever arm m by means of a screw f interposed between the lever a, which is connected to the regulator by a lever b and is oscillated by the lever c, and the lever d, the position of which is determined by the cam e<2>. The basic speed of the motor is adjusted by varying the relative position of the arm p, which is operated by the cam e<1>. and the main lever c by means of a screw n. The position of the fulcrum of the lever c may be adjusted by a slide or by a cam s, Fig. 4.
Patent GB-720673-A (GB)
Title: Improvements in or relating to lubricating grease composition
Inventor: BARTLETT JEFFREY HOBART
IPC: C10M169/00
Filed: 1953-02-06
Abstract: Hydroxyl aryl-substituted fatty acids in which the non-aryl portion contains 10-30 carbon atoms are prepared by the reaction of a phenol with a fatty acid or ester or a nitrile, and hydrolysis of the ester or nitrile to the acid.  If unsaturated acids, esters or nitriles are used they are first chlorinated and then reacted with the phenol. Fatty acids and esters referred to are undecylenic, lauroleic, myristoleic, palmitoleic, oleic, gadoleic, erucic, ricinoleic, linoleic, linolenic, elaeostearic, licanic, arachidonic and clupanodonic acids and glyceryl oleate. Phenols specified are phenol, cresols, naphthols such as alpha and beta naphthols and alkyl and aryl naphthols and di- and tri-hydric phenols such as resorcinol, catechol and pyrogallol.  In an example phenol, BF3 and oleic acid are mixed in a flask. The reaction mixture, after cooling and standing for 20 hours, is diluted with toluene, washed with water containing a little isopropyl alcohol and steam distilled to obtain hydroxy-phenyl stearic acid.  Metal soaps of the above hydroxyl aryl-substituted fatty acids, such as the alkali or alkaline earth metal soaps, form complexes with low molecular weight salts, for example of acetic, furoic, acrylic, crotonic and ethoxypropionic acids, for example sodium acetate.ALSO:A lubricating grease comprises a lubricating oil and a metallic soap of an aryl-substituted fatty acid, the aryl group thereof containing a free hydroxyl group, and the non-aryl portion containing 10-30 carbon atoms.  The aryl-substituted fatty acid may be one formed by the reaction of a fatty acid or ester or a nitrile with a phenol.  Fatty acids and esters referred to are undecylenic, lauroleic, myristoleic, palmitoleic, oleic, gadoleic, erucic, ricinoleic, linoleic, linolenic, elaeostearic, licanic, arachidonic, and cluparodonic acids and glyceryl oleate.  Phenols specified are phenol, cresols, naphthols such as alpha and beta naphthols and alkyl and aryl naphthols and di- and tri-hydric phenols such as resorcinol, catechol and pyrogallol.  The esters and nitriles are hydrolized to the acid after reaction with the phenol.  Hydroxyphenyl stearic acid is specified.  The metal soap may be an alkali or alkaline earth metal, for example sodium or lithium, soap.  Lubricating oils referred to are mineral oils and synthetic oils such as the branched chain esters of dibasic acids, for example di-2-ethyl hexyl sebacate, and complex esters formed by reacting together a glycol or polyglycol and a dibasic acid and an alcohol.  Optional ingredients specified are soaps, for example lithium stearate, and low molecular weight salts, for example of acetic, furoic, acrylic, crotonic and ethoxypropionic acids. Examples are given of the preparation of the greases.
Patent GB-1166731-A (GB)
Title: Image Differentiated System
IPC: G06V10/88
Filed: 1967-01-23
Abstract: 1,166,731. Spatial filtering. THOMPSON - C. S.F. Jan. 23, 1967 [Jan. 24, 1966], No. 3397/67. Heading G2J. In a double diffraction optical system, particularly for detecting and locating certain characters or words forming a text, in which the lens 2 in the place x0, y0 forms an image of the mono-chromatic point source of light 1 in the place u, v, and a lens 3 in the plane u, v, forms an image of plane Xo, yo at plane xi, yi, the flat transparent object 4 being placed adjacent lens 2 and the spatial filter 5 adjacent lens 3, the filter 5 forms an optical differentiating means to provide a better signal to noise ratio, and comprises at least one non-uniform transparency plate whose filtering law is:- T(u, v)= m. (u<n> + v<P>)<q> where m is a co-efficient and n, p, q, are positive integers. m may be constant, n and P being each equal to 2 and q being unity, or m may be the complex conjugate of the Fourier transform of an amplitude distribution corresponding to a selected portion of the information contained within the object 4.
Patent GB-588341-A (GB)
Title: Improvements in or relating to air compressors
IPC: F04B27/04
Filed: 1945-02-12
Abstract: 588,341. Piston packing. STOKER. W., and UPSON, E. C. Feb. 12, 1945, No. 3416. [Class 122 (i)] [Also in Group XXVIII] Piston rings 8 for use in an air compressor of the divided piston type (see Group XXVIII) are formed of compressed red fibre and are pressed out of their grooves 46 against the cylinder wall or liner 47 by means of oilresistant rubber rings 48.
Patent GB-1376754-A (GB)
Title: High intensity arc lamp
IPC: H01J61/98
Filed: 1972-01-25
Abstract: 1376754 Gas discharge lamps VARIAN ASSOCIATES 25 Jan 1972 [25 Jan 1971 7 Jan 1972] 3467/72 Heading H1D A gas discharge lamp comprises a solid ceramic body 10 having one end 92 of dished configuration to form a reflector cavity, the surface of the cavity being such as to reflect radiation from an arc between anode 17 and cathode 30, the cavity being closed by an optical window 31. The reflecting surface of the ceramic body has a metal coating 94 which can be applied directly to the ceramic body or with the intervention of a layer 93 of glazing material. The cathode is supported by three fins 27. The lamp is evacuated and filled through an anode support tube 16 and hole 18. A typical filling is xenon at 25 atmospheres with an arc gap of 2 cm.
Patent GB-571814-A (GB)
Title: Process for the preparation of polymerised hydrocarbons in powder form
IPC: C08J3/14
Filed: 1942-03-17
Abstract: Polyethylene is prepared in powder form by dissolving it, at elevated temperature, in a solvent, e.g. a hydrocarbon or chlorinated hydrocarbon, in which it is soluble to a considerable extent at such elevated temperature, but substantially insoluble at lower temperatures, and then cooling to solution to such lower temperature. Solution is preferably effected near the boiling point of the solvent and cooling effected rapidly by applied cooling means.  The precipitated powder is separated, e.g. by filtering and dried at elevated temperature insufficient to cause softening.  A fine powder is obtained by tumbling the separated powder in a machine provided with an exhaust for the liquid vapour, heat being applied, if desired.  An example, using petroleum spirit as solvent, is given. The powder may be used for moulding in presses or injection machines, or, in a spray pistol, to produce films.  Specification 491,804 is referred to.
Patent GB-1044453-A (GB)
Title: Twine
IPC: D07B1/02
Filed: 1965-01-27
Abstract: Twine is made by winding an extensible paper cover about a core of extensible synthetic plastic filaments.  The core may be of polypropylene, viscose or nylon.  The paper may be kraft paper of normal or wet strength and may be crimped across its direction of run to make it extensible in one direction.  Before twisting the paper about the core it is passed through a water bath at room temperature or, if paper of low wet strength is used it is soaked in mineral oil. When water is used it should have pH of about 7 and a hardness factor of 3-9 grains.  In addition magnesium and/or calcium salts or other minerals commonly found in hard water may be present.  When a mineral oil is used it is a mixture of wax emulsion, sulphonated castor oil and water.
Patent GB-575079-A (GB)
Title: Improved means for locking cycles pumps to cycles
IPC: B62J11/02
Filed: 1944-02-26
Abstract: 575,079. Fastenings. GIBBS, T. J. Feb. 26, 1944, No. 3601. [Class 44] [Also in Group XXXI] Locking means for cycle tyre pumps comprise a longitudinally displaceable member 11 which co-operates with a stationery member 9 to hold the pump rigidly in position as shown in Fig. 1 and a locking member 14, Figs. 1, 2. The square or otherwise angularly shaped head 7 of a bolt securing a clip 2 in which the member 11 is displaceably mounted is engaged by a correspondingly shaped angular hole in the locking member 14. A hole 16 in the member 14 lies adjacent a similar hole 15 in the member 11 and the hasp 17 of a padlock passed through the holes 15, 16 thus secures the pump and prevents tampering with the retaining bolt head 7. The member 11 may be screw-threaded in the clip 2, Fig. 1, or a bayonet fastening, Fig. 6. The member 9 screws or otherwise is held in a clip 3 the squareheaded retaining bolt 8 of which is engaged by a similar shaped hole in a bent plate 18, Figs. 1 and 4. Alternatively the bolt 8 may be flat or cheese-headed and completely covered by the plate 18, Fig. 5.