baber/WOPTO huggingface dataset:
Patent GB-259691-A (GB)
Title: Improvements in the mounting of lenses
IPC: G02B7/02
Filed: 1925-07-25
Abstract: 259,691. Taylor, W., Warmisham, A., and Kapella, Ltd. July 25, 1925. Lens mounts. - To avoid distortion of the lens when mounting, the lens is mounted between three sets of isolated abutments. each set comprising three isolated bearing points approximately equidistant around the lens edge, the points of bearing of each set being in alignment with the bearing points of the other set or sets. The bearing points may be formed integrally with the lens mount or on the lens or of separate material between the lens and the mount. In one form, Figs. 1 and 2, the lens cell C has three abutments a, b, c forming the bore of the cell and isolated by recessed portions d, d<1>, d<2>. The shoulder of the cell is formed by three similar abutments e, e<1>, e<2> isolated by recessing portions f, f<1>, f<2> to a lower level. The lens is held in the cell by a ring h having three projections and maintained in position by a bezel i. The edge of the lens may be provided with a strip of material, e.g. lead, at intervals to form isolated abutments, or it may be ground away as at k, k<1>, k<2>, Fig. 6. To avoid undue stress due to the ordinary form of bezel, the bezel is formed by thinning the edge of the cell from the inside and then spinning the rim i, Fig. 8, on to the face so formed.
Patent GB-398005-A (GB)
Title: Improvements in or relating to the protection of high tension dynamo electric machines
IPC: H02H7/06
Filed: 1932-07-05
Abstract: 398,005. Protective devices for dynamos. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, CALVERLEY, J. E., Crescent Road, Rowley Park, and NEWMAN, S. E., 45, Rowley Grove, both in Stafford. July 5, 1932, No. 18992. [Class 35.] An h.t. dynamoelectric generator 1 designed, as by a decompounding winding 3, to have a low termina voltage on short circuit and thus adapted to remair connected to its load, is placed ir circuit with overload-responsive means 4 operable to energize the trip-coil 11 of a circuit-breaker 5 which first inserts a discharge resistance 6 and then disconnects the field winding 2. Alternatively, the breaker may have a high resistance connected across its contacts before opening. In. Fig. 2, a motor 8 may be operated to insert all the resistance 7 and so reduce the short-circuit to a safe value. If desired, a field circuit-breaker, such as 5 in Fig. 1, may be operated subsequently to insertion of resistance 7. Both arrangements may be made self-restoring on return of relay 4 after the short-circuit has disappeared, provided the field circuit is not broken.
Patent GB-1464122-A (GB)
Title: Data storage apparatus
IPC: G11C11/411
Filed: 1974-05-01
Abstract: 1464122 Data store; transistor bistable circuits INTERNATIONAL BUSINESS MACHINES CORP 1 May 1974 [25 June 1973] 18993/74 Heading G4C [Also in Division H3] A data store includes a matrix of integrated circuit cells 15 each including a bi-stable formed by cross-coupled SCR's T1, T3; and T2, T4 (shown as regeneratively coupled pairs of complementary transistors) and each connected, via gating means D1, D2, to a pair of column bit lines, to a row word line 13, and to a power supply bus 17, each bus 17 being connected via a resistor RWT external to the integrated array, to the first terminal of a power source + V, and each word line 13 being connected, via a respective resistor RWB, to the second (ground) terminal of the power source. To read a cell the appropriate bit lines B0, B1 are pulsed to a positive voltage somewhat less than V and the appropriate word line 13 is pulsed negative. Conduction in the conducting SCR is increased and the voltage at the associated bit input B0, B1 drops whereas the voltage at the other bit input B1, B0 rises. The voltage difference is detected by a differential sense amplifier connected across the column bit lines. Assuming T1 and T3 are conducting and it is required to write into the cell to render T2, T4 conductive bit input B1 is clamped at 0 volts and bit input B0 is pulsed positive and word line 13 negative. Current thus flows through diode D1 to raise the voltage at the bases of T2 and T3 tending to switch T2 on and T3 off. The bi-stable is thus latched into its other state with T2, T4 conducting. The arrangement results in easier writing since the use of a common resistor RWT and the parallel connection of a row of cells to RWT ensures a relatively low current through the conducting SCR so that the current through the diode D1 or D2 has only a small current to overcome to effect writing. Furthermore the use of RWT enables resistor R1 in each cell to be made smaller thus reducing power loss and heat generation in the array. Resistor R1 overcomes the negative resistance property of the SCR's.
Patent GB-393426-A (GB)
Title: Improvements in radiography
IPC: G21K4/00
Filed: 1932-07-06
Abstract: 393,426. Radiography ; fluorescent screens. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. July 6, 1932, No. 19108. Convention date, July 7, 1931. Drawings to Specification. [Class 98 (i).] The intensifying action of a fluorescent screen in radiography is enhanced by subjecting the screen before use to a treatment causing luminescence. For example (1) the screen may be subjected to a preliminary exposure, preferably at a low temperature, to X-rays or to a radio-active substance ; or (2) it may be associated temporarily or permanently with a layer producing luminescence such as a radio-active layer ; or (3) a substance which produces luminescence, such a radio-active substance, may be incorporated in the layer during manufacture. The second method may be carried out by placing in the dark slide behind the fluorescent screen a copper sheet coated with polonium, or coating the back of the screen with a layer containing radium chloride. Specifications 201,549 and 313,456, [both in Class 98 (i), Photographic cameras &c.], are referred to.
Patent GB-1372656-A (GB)
Title: Process for attaching metal compounds to articles made of synthetic polymers
IPC: D06M101/16
Filed: 1973-04-19
Abstract: 1372656 Electrically conductive fibres RHONE-POULENC-TEXTILE 19 April 1973 [24 April 1972] 19123/73 Headings DIP and D1W [Also in Divisions B2 and H5] Electrically conductive articles are made by impregnating the articles with hydrogen sulphide, thioacetamide or thiourea, then treating the fabric with an aqueous solution of a metal salt which will react with the sulphur compound. The hydrogen sulphide may be liquid or gaseous and applied to the article under pressure. The thioacetamide or thiourea may be applied to the fabric in aqueous solution. The metal salt may be the chloride, sulphate, nitrate or acetate salt of copper, silver, cobalt, mercury, lead or tin. The articles may be fibres, yarn or woven, non-woven or knitted fabrics containing nylon 6 or 66, polyethylene terephthalate, aromatic polyamides or wool, or films or shaped articles. The article may have antistatic properties or be connected to electrodes and be used as a heating element.
Patent GB-314032-A (GB)
IPC: C22C33/00
Filed: 1928-06-19
Abstract: 314,032. Climax Molybdenum Co., (Assignees of Kissock, A.). Nov. 1, 1927, [Convention date]. Divided on 299,800. Alloys. - Iron-molybdenum alloys, such as steels, cast-irons, or grey, white, malleable, or semi-steel castings, are made by mixing molybdenum-bearing pig iron, which may be made as described in Specification 299,800, with other molten iron, or melting it with other iron, or mixing it with molten metal in a steel-melting furnace, or using it as part of the charge of a cupola furnace.
Patent GB-477914-A (GB)
Title: Improvements in or relating to aerials and feeder systems used in high frequency signalling systems
IPC: H01Q9/40
Filed: 1936-07-10
Abstract: 477,914. Aerials. CORK, E. C., and PAWSEY, J. L. July 10, 1936, No. 19177. [Class 40 (v)] A half-wave aerial, suitable for television, is made of such dimensions that the ratio between its own impedance and that a coaxial feed-line, say of the order of 100 ohms. is not greater than four to one. This facilitates the matching of the two elements over a wide band of frequencies. The aerial A, B, Fig. 2, may consist of a tube of metal or wire-gauze, or a large strip of metal or a number of wires in parallel. For a wavelength of 6À5 metres and a typical feed-line of 78 ohms impedance, the radius of the aerial is 6À7 inches. A centre-tapped half-wave conductor X, Y effectively earths the end of the sheath of the feed-line F, for the working frequencies, whilst a similar conductor X<1>, Y<1> also assists in suppressing waves on the outside of the sheath. Specification 282,905, [Class 40 (v)], is referred to.
Patent GB-1452937-A (GB)
Title: Battery cells having separator membranes comprising a sodium borate-sodium halide glass system
IPC: C03C3/14
Filed: 1973-10-17
Abstract: 1452937 Glass for battery cells DOW CHEMICAL CO 17 Get 1973 19201/76 Divided out of 1452936 Heading C1M [Also in Division H1] A fluid-tight membrane for separating electrodes in a battery cell is fabricated from a sodium borate glass of the molecular formula wherein M is Mg, Ca, Sr or Ba; Y is SiO 2  or P 2 O 5 ; X, X<SP>1</SP> and X<SP>11</SP> are each F, Cl or Br; - 0À5#a<2; when X is F; when X is Cl or Br; 0#c<b; 0#d#1, when Y is SiO 2 ; 0#d#0À5, when Y is P 2 O 5 ; and 0#e<(b-c). The borate glass is preferably used in the form of hollow fibres of outside diameter 20-1000Á and wall thickness 5-100Á, the ratio of outside diameter to wall thickness being 3-20 : 1. Reference is made to Specification 1,452,936, in which the above sodium borate glass is claimed.
Patent GB-664734-A (GB)
Title: Shutter mechanism
IPC: G10H3/06
Filed: 1949-07-21
Abstract: 664,734. Musical instruments. BALDWIN CO. July 21, 1949. [Aug. 24, 1948] No. 19261/49. Class 88 (ii). [Also in Group XL (b)] A shutter mechanism for a keyboard photoelectrical musical instrument comprises an arcuately grooved member and means for moving a wire laterally within the groove to cover or uncover an aperture in the bottom of the groove. As shown, Figs. 1, 2, the shutter mechanism comprises a disc 3 having a number of radial grooves 29 in its upper side with concentric apertures 27, 28, &c. extending the width of each radial slot 29. The under surface of the plate 3 is grooved at 25, 26, &c. and each groove houses a wire 23, 24, &c. anchored at one end to the plate 3 as at 42, 43, and connected at its other end in a manner similar to a "Bowden" (Registered Trade Mark) cable to a key of the playing keyboard 41. In the normal position of each key 40, the corresponding wire e.g. 24 is tensioned by a spring 50 to engage the inner periphery of its groove 26 in which position it closes the corresponding apertures 28, as shown in Fig. 2. When a key e.g. 39 is depressed against the tension of the associated spring 50 the corresponding wire e.g. 23 is forced to engage the outer periphery of its groove to open the corresponding aperture 27. This permits light from a parallel beam 4, 5, etc. derived from a light source 1 and a parabolic reflector 2, to pass as at 4, Fig. 2, through a wave form pattern 6 on a stationary timbre disc 7, the individual light beams such as 4 being in known manner broken up into moving light pencils by transparent slots 8 arranged in continuous rows on the rotating pitch disc 9, so that the wave form pattern is effectively scanned by these pencils. The emergent oscillatory ray 4a is reflected by a parabolic mirror 10 on to a photocell 11 which through the amplifier 12 and loudspeaker 13 converts the light oscillation into sound. Each wire controls several apertures such as 27, 28 arranged in the different radial grooves 29 and these apertures are aligned with groups of wave form patterns 6 corresponding to a given tone colour. Tone colour or timbre shutter doors 30 hinged or slidable relative to the plate 3 may be actuated selectively e.g. by stops 31 through a "Bowden" wire control to cover any groove 29 as desired. The shutter wires and the timbre shutters 30 may, alternatively, be operated electro-magnetically by their respective playing keys and stops. The invention may be applied to a photo-electric instrument, Fig. 5 (not shown), in which only one tone colour is produced at a time by one pitch disc and one overlapping rotating timbre plate. The shutter plate may be divided into sectors each accommodating one keyboard.
Patent GB-1081032-A (GB)
Title: Improvements relating to disinfectant dispensers for water cisterns
IPC: E03D9/03
Filed: 1965-05-07
Abstract: A disinfectant dispenser for lavatory cisterns comprises a container filled with a liquid disinfectant having a density less than water and an apterured member providing communication between the contents and the surroundings.  The apertured member is disposed so that it is below the water level in the cistern at least when the cistern is filled and has a shield extending outwardly and upwardly from directly beneath and at least partly across the aperture whereby pressure variations in the container due to fluctuations in the cistern water level cause dispensation of disinfectant and entry into the container of water through the aperture.
Patent GB-952109-A (GB)
Title: Cellular sound-proofing panels and method for producing same
IPC: E04B1/84
Filed: 1961-05-29
Abstract: 952,109. Curtains. BODIN-GIRIN & CIE. May 29, 1961 [June 27, 1960], No. 19320/61 Heading A4S. [Also in Divisions D1, F2 and G5] In a method of producing a semi-rigid sound-proof panel, two layers of fabric having alternate strips of dense weave 3 and open weave 4 are joined together along one edge of each strip to form tubes which are fitted on rods while strips 3 are hardened to a cylindrical form and, if necessary, made impermeable. When using poly acrylonitrile thread, only warp or weft threads in strips 3 which run longitudinally of the tubes may be of crimped thermally hardenable thread, the other threads may be of high twisted yarn, unaffected by the hardening process. The panel may be further stiffened by a coating process. When woven from a high twist cotton thread, strips 3 are hardened and made impervious by coating while strips 4 are shielded from the coating agent. In either case, groups of threads 6 of hardenable thermoplastic or acrylic material may be used to provide annular support for the walls of each tube.
Patent GB-738704-A (GB)
Title: Improvements in or relating to expansible core-holding mandrels for bobbin winding machines
IPC: B65H54/54
Filed: 1953-07-13
Abstract: 738,704. Winding yarn. EHEIM, W. July 13, 1953, No. 19357/53. Class 120(2). An expansible core-holding mandrel for bobbin winding machines, the mandrel comprising a hollow cone 10 which is provided with longitudinal slots 13 to form resilient leaves 14 adapted to clampedly engage a core slidably mounted thereon, is characterized in that the mandrel is made of resilient plastic material, such as a polyamide, polystyrene, cellulose acetate, cellulose acetate butyrate or a mixed polymer, and that the free edges of the mandrel leaves are stiffened by longitudinal ribs 17 disposed on the insides of the leaves and preferably of substantially the same thickness as the mandrel walls. The leaves are preferably provided with a core-limiting flange 16 and circumferential ribs 15.
Patent GB-1415084-A (GB)
Title: Manufacture of impact-resistant acrylonitrile-styrene  copolymers
IPC: C08F212/10
Filed: 1973-04-24
Abstract: 1415084 Uniform copolymers STANDARD OIL CO 24 April 1973 [10 May 1972] 19381/73 Heading C3P A polymeric resin is prepared by polymerizing in a homogeneous manner, by maintaining an essentially constant acrylonitrile-styrene ratio in the polymerization medium and always maintaining some free styrene in the medium until most of the monomers are converted to polymer, to form a uniform copolymer to at least 70% by weight conversion of 100 parts by weight of a monomer component consisting of (A) from 70 to 98% by weight of acrylonitrile, based on the weight of (A) and (B), and (B) from 2 to 30% by weight, based on the combined weights of (A) plus (B), of styrene and then including in the polymerization medium from 1 to 40 parts by weight of (C), from 70 to 100% by weight of butadiene-1,3 and/or isoprene, based on the weight of (C) and (D), and (D) from 0 to 30% by weight, based on the combined weights of (C) plus (D), of acrylonitrile and/or styrene and continuing the polymerization to a final conversion of from 80 to 100% by weight of monomers to polymer. The term "uniform copolymer" refers one in which the average composition of a polymer molecule formed early in the polymerization reaction is substantially the same as one formed at any later period. In the examples acrylonitrile, styrene and butadiene-1,3 are copolymerized in the presence of water, ammonium salt of sulphated nonylphenoxy poly(ethyleneoxy) ethanol, (NH 4 ) 2 S 2 O 8  and limonene dimercaptan.
Patent GB-805377-A (GB)
Title: Improvements in or relating to pneumatic brakes
IPC: F16D65/28
Filed: 1956-06-22
Abstract: 805,377. Fluid friction brakes. BOBST & FILS S.A., J. June 22, 1956 [June 22, 1955], No. 19496/56. Class 103 (1). In a pneumatic braking device for a rotatable element, the latter is coupled by a connecting rod to a piston capable of producing compression of a gaseous mass in a cylinder; the cylinder head being provided with an opening leading to atmosphere controlled by a movable element contained therein and drawn by the escaping gaseous medium against a resilient resistance and which by its displacement progressively throttles the opening leading to atmosphere. In the embodiment illustrated in Fig. 1, a penumatic braking device as disclosed in Specification 555,311 is shown wherein an intermittently rotatable element 1 carrying a crank 7 and connecting rod 8, is arranged to turn in a counter-wise direction while a toothed quadrant 2, engaging therewith and pivoted about pivot 3, oscillates in the direction 6 under the action of a rod connected at 4. During each leftwards stroke of the quadrant 2, the rotatable element remains stationary; the pinion 1 meshing with the quadrant is arranged to transmit rotatory motion to the pinion 1 through the medium of dog-clutch means (not shown) of the character disclosed in Specification 556,971, [Group XVI], a cylinder 10 is pivotally connected at 11 to a crank 12 and is provided with an adjustable port 13 permanently open to atmosphere. In the position shown the cylinder is freely open to atmosphere through passages 14 and 15 in the cylinder 10 and pivot 11 respectively. In the first part of the movement of the rotatable element from the position shown in Fig. 1 in the direction of the arrow 5 the piston 9 moves downwards and the cylinder 10 is moved upwards but there is no braking action since the passages 14 and 15 are still in register; however, when position d is reached and passed, the cylinder 10 continues its upward movement at a progressively increasing speed and the crank 7 again commences its downward movement and the cylinder makes the last stage of its upward movement until position a is reached and the cylinder 10 and crank 12 are in their uppermost positions and the passages 14 and 15 are out of register and compression of the gaseous mass in the cylinder is such as to prevent further movement of the rotatable crank 1. In the specific constructional example of the present invention illustrated in Fig. 2, the orifice 13 disclosed above is replaced by a movable sleeve 17 provided with an orifice 16 mounted in the end of the cylinders 10; the sleeve 17 being held in position by a spring 19; the tension of which may be adjusted by a nut 20 screwed on an abutment screw 21 which in turn limits the axial displacement of the sleeve 17 to the desired maximum stroke. Lateral openings 23 are provided in the cylinder 10 to constitute supplementary air escapement means which can be closed by means of screw in order to modify at will the speed at which compressed gaseous mass will escape from the cylinder 10 upon a downward stroke of piston 9.
Patent GB-147565-A (GB)
Title: Improvements in and relating to the casting of steel ingots
IPC: B22D27/06
Filed: 1920-07-08
Abstract: 147,565. Coates, R. G. Aug. 20, 1917, [Convention date]. Casting processes.-Steel is poured into a shallow ingot mould 1, and its temperature is controlled by the application of heat, from a hot refractory block 3 placed on top of the mould, or from a hot gaseous envelope over the surface of the steel so that the surface of solidification shown by dotted lines passes gradually through the steel from the inside of the mould to the top.
Patent GB-1216565-A (GB)
Title: Polycrystalline phosphors
IPC: C09K11/77
Filed: 1968-04-25
Abstract: 1,216,565. Luminescent materials. INTERNATIONAL STANDARD ELECTRIC CORP. 25 April, 1968 [28 April, 1967], No. 19529/68. Heading C4S. A mixed Mg and Na vanadate phosphor containing Eu has the formula where 0.1 > x > 0 : > y # 0:1 > z # 0 and A is a phosphate or arsenate ion. A phosphor may be prepared by heating a mixture of MgO, Na 2 , CO 3 , NH 4 F, Eu 2 O 3 , (NH 4 ) 2 ASO 4 H and V 2 0 5 . Another phosphor has a formula (MgNa) 0 . 96  . Eu o . 94  . VO 4 .
Patent GB-1391501-A (GB)
Title: Poly p-phenylene terephthalamide fibres
IPC: D01F6/60
Filed: 1972-04-27
Abstract: 1391501 Poly (p-phenylene terephthalamide) fibres E I DU PONT DE NEMOURS & CO 27 April 1972 [28 April 1971 17 Aug 1971] 19575/72 Heading B5B A poly (p-phenylene terephthalamide) fibre is disclosed, having a density of no less than 1À40 g./cm.<SP>3</SP>, a lateral birefringence (as herein defined) of from 0À022 to 0À065, crystalline regions with an apparent crystallite size of 58 to 125 and an orientation angle of 6 to 13; the ratio of the apparent crystallite size to the orientation angle is at least 6/degree. The polymer of the fibre must have an inherent viscosity of at least 4À0; fibres may be produced from this by spinning solutions of it in sulphuric acid (at least 98% H 2 SO 4 ), chlorosulphuric acid or fluorosulphuric acid, into a coagulant such as water. The fibres of the invention are prepared from such of these fibres as have a density of no less than 1À40 g./cm.<SP>3</SP>, or orientation angle of less than 22 C. a lateral birefringence of at least 0À02, and an apparent crystallite size of less than 52. These fibres are maintained under tension in a zone of a temperature of at least 150 C. for a length of time sufficient to give the necessary values of the apparent crystallite size and the orientation angle. The tension is at least 0À5 g./denier feet less than the tension required to draw the fibre 1À03 times its original length at the temperature used. The time of heating is such that neither the original tensile strength, nor the inherent viscosity clearance decrease by more than 30%.