baber/WOPTO huggingface dataset:
Patent GB-1374605-A (GB)
Title: Method of manufacturing glass ceramic material
IPC: C03C10/00
Filed: 1971-05-24
Abstract: 1374605 Manufacturing glass ceramics PILKINGTON BROS Ltd 16 May 1972 [24 May 1971] 16682/71 Heading C1M Glass-ceramic material is manufactured from a shaped melt of crystallizable vitreous material without the application of external heat by rapidly cooling the melt at a rate between 300 C. min<-1> and 15 C. min.<-1> to a temperature within the range between Tg + 50 C. and Tg + 350 C. conducive to crystal growth where Tg is the transformation temperature of the vitreous material 1, regulating the heat extraction from the material while it is within that range so as to induce the required crystal growth by the time that the material has cooled through the temperature range, and then continuing the cooling of the glass-ceramic so produced. The material may be held at a substantially constant temperature for a time, preferably not in excess of 30 minutes, sufficient to induce the required crystal growth. Alternatively the heat extraction may be continued without interruption. The melt may initially be poured on to a thermally conductive support and cooled while it is on the support. Such a support may consist of a flat sheet of metal such a platinum alloy, carbon, or a molten metal such as molten tin or tin alloy. Melts having compositions within the following four sets of ranges expressed in percentages of weight are suitable: (a) SiO2 75À90; Al2O3 1-9; Li2O 7-13; nucleating oxide (P2O5, ZrO2 or TiO2) 2À8-4À8 (b) SiO2 49-82; Al2O3 14-36; Li2O 3-8; ZrO2 0-10; TiO2 0-12; F 0-5; P2O5 0-5, wherein the amount of ZrO2+TiO2+F+P2O5 is 3À5-15; (c) SiO2 39-67; Al2O3 1-32; BaO 5-39; any O 4À7 (d) SiO2 53À2; Al2O3 9À5; any O 22À4; TiO2 10À8; K2O 1À8; F2 2À3.
Patent GB-711207-A (GB)
Title: Improvements in and relating to impedance networks
Inventor: SARAGA WOLJA
IPC: H03H7/21
Filed: 1949-06-23
Abstract: 711,207. Phase splitting networks. TELEPHONE MANUFACTURING CO., Ltd. June 20, 1950 [June 23, 1949], No. 16698/49. Drawings to Specification. Class 40 (8) The invention relates to phase splitting networks which receive a single input signal and produce two output signals having a constant phase difference, and is directed to designing the network to produce this contant phase difference despite a wide variation in the frequency of the input signals. For the purpose of this design two separate networks are used having phase shifts # 1  and # 2 , and the phase difference y of their outputs (y=tan ¢ (# 1 -# 2 )), is defined in terms of the normalized frequency x as y n =y tan h (n tan h-<SP>1</SP>x). The two separate networks are elementary phase shifting networks having normalized series arm reactances ax, where a=Œj/xj, and xj are the roots of the equation y=+j, and where the positive or negative sign in the expressionŒj/xj is such that a is always positive. One of the separate networks is composed of elementary networks in tandem corresponding to the positive sign in the expression, and the other is composed of elementary networks in tandem corresponding to the negative sign. The attenuation of the two component networks are equal. The Specification describes in detail methods of calculating the networks using Taylor approximations and also Tchebycheff approximations. Specifications 594,431 and 711,260 are referred to.
Patent GB-1307405-A (GB)
Title: Process for preparing 5-aryloxy methyl-oxazolidine and alkylamino alcohol derivatives
IPC: A61K31/135
Filed: 1970-04-09
Abstract: 1307405 Oxazolidine and propanolamine derivatives SANKYO CHEMICAL INDUS - TRIES Ltd 9 April 1970 [14 April 1969 (2)] 16812/70 -Heading C2C Oxazolidine and propanolamine derivatives are prepared by the following route: (R 1 , 3 =aryl, optionally substituted; R 2 = C 1-5  alkyl, cycloalkyl), optionally followed by conversion of the final product to a salt.
Patent GB-111172-A (GB)
Title: Improvements in Corrugated Tiles and Sheets for Roofs and Walls.
IPC: E04C2/32
Filed: 1916-11-24
Abstract: 111,172. Turner Bros. Asbestos Co., Turner, S., and Hannah, J. C. Nov. 24, 1916. Roofs and roofing; walls.- Non-metallic corrugated tiles and sheets f o r roofs. walls, &c. are made with one or more large corrugations and of constant thickness, the corrugations having straight and curved top and bottom angles, and tapering longitudinally to allow close bedding at the overlapping joints. Flat or plain sheets of glass or other material may be secured between the edges of corrugated sheets and single-corrugated tiles as shown in Fig. 4; glass sheets may also be held between two single-corrugated tiles as shown in Fig. 5, these double tiles being applicable also as framing or supports for slabs or sheets of other material in the construction of walls, partitions, and asbestos-cement buildings. The tiles or sheets may be made of asbestos-cement, plain cement, glass, clay, &c., and the corners may be cut away to reduce the thickness of overlap where four tiles meet.
Patent GB-708551-A (GB)
Title: Improvements relating to aircraft retractable alighting gear
Inventor: BASTOW FRANK
IPC: B64C25/20
Filed: 1951-07-16
Abstract: 708,551. Hydraulic shock-absorbers. DOWTY EQUIPMENT, Ltd. Oct. 16, 1952 [July 16, 1951], No. 16864/51. Class 108(3) [Also in Group XXXIII] An aircraft retractable landing leg incorporates a first shock absorber operative both as a dashpot device and as a resilient device, a second shock absorber operating in series with the first shock absorber and operative only as a dashpot device, means to extend the second shock absorber and with it the leg when said leg is lowered but offloaded, and mechanism operable as a consequence of retraction of the landing leg to affect contraction of said second shock absorber and with it the leg and to 'maintain such contraction until the landing leg is lowered. The leg comprises an upper element 5 pivotally mounted at 6 on the aircraft and provided with pivots 7, 11 for links 8, 12 which carry further pivots 15, 13 to support a lower element 14 'of the leg, the whole forming a parallelogram linkage. The upper element 5 may comprise a known form of damped shock absorber and the lower element 14 consists 'of an outer component 18 housing an inner telescopic component 19, sealed therein by a gland 33. A stem 34, fixed at its upper end to the component 18, is formed at its lower end as a dashpot piston 35 slidably sealed within the component 19 which carries a retaining ring 36 to co-operate with the piston 35 in limiting the extension of the lower element 14. The piston 35 has a lower extension enclosing a slidable spring loaded valve 38, formed with ports, 37 and a tapered projection 47, and the sleeve member 42 enclosing the valve 38 has a central orifice 39 and radial ports 41 in alignment with other ports 43 in the stem 34. A spring loaded relief valve 44 is in communication with further radial ports 46. The leg element 14 is filled with oil to the level A and the space above the oil is filled with gas at a relatively low pressure sufficient to ensure extension of the lower leg part when it is lowered and unladen. The mechanism for shortening the composite leg during retraction comprises a cable 27, anchored at 26 to the part 19 and to the aircraft at a point 32 offset from the pivot 6 on the side thereof remote from the retracted position of the composite leg, the cable running over pulleys 29, 31 so that retraction of the leg automatically telescopes the parts 18, 19 against the low resistance offered by the gas within the element 14. During landing, the gas becomes fully compressed and the initial landing shock will be partly dissipated by transfer of liquid through ports 43 and 39, though excessive shock' loads will raise the relief valve 44 and bring ports 46 into operation. At the lower end of the stroke the stem 48 of valve 38 strikes an abutment 49 secured to component 19 so that the projection 47 enters the orifice 39 to restrict the flow of oil and prevent the components 18 and 19 slamming together.
Patent GB-1514418-A (GB)
Title: Electronic timepiece
IPC: G04C10/04
Filed: 1976-04-26
Abstract: 1514418 Electronic timepieces DAINI SEIKOSHA KK 26 April 1976 [1 May 1975] 16895/76 Heading G3T In an electronic timepiece with an electrooptical display device, a fall in battery voltage is indicated by a change in colour of at least part of the display device. Liquid crystal display materials are used and the battery condition indicator may be the 7- segment elements used to indicate the time or may be separate such as a frame area (10) Fig. 6 (not shown) surrounding the time display digits.  In Fig. 5, an LCD display 35 is driven by timing signals from a circuit 32 via a wave converter 37 and driver circuit 36. A voltage booster circuit 34 is coupled to a battery 33 and to a voltage detector 38. The output of 38 is applied to the wave converter 37 and to a second wave converter 39 the output of which is a function of the battery voltage and is applied to display device 35. The converter 39 is the main energizing source of the display. Fall in battery voltage results in colour change of the display. Several examples of suitable nematic liquid crystal materials are given, as follows: (a) P-cyanide phenol with 10% of P'-n-butyl benzol; (b) as in (a) but with 15% of the butyl benzol; (c) 45 wt. per cent of methoxybenzylidene butylanilene (MBBA), 40 wt. per cent of ethoxybenzylidenebutylaniline (EBBA) and 15 wt. per cent of P-n-octyloxybenzylidene and methylred (dyestuff); (d) 50 wt. per cent of MBBA and 50 wt. per cent of EBBA vertically orientated in the device. The applied voltage may be at 32 Hz and the voltage ranges between 2V and 8V give a distinctive range of colours and mixtures of colours. The LC material is sandwiched between glass electrode plates which have been rubbed so that the long axis of molecules of the LC material in contact with each electrode plate, is parallel to the direction of rubbing. In one embodiment, a reflector plate is located adjacent one electrode plate and the applied voltage range of 1À5V-2À0V gives four distinctive colours.
Patent GB-991054-A (GB)
Title: Curable epoxy resin compositions
IPC: C08G59/50
Filed: 1963-04-30
Abstract: Curable epoxy resin compositions comprise (A) an epoxy resin together with (B) an adduct of an epoxy resin and a polyamine, and (C1) a resol or a derivative thereof in which the methylol or substituted methylol groups are at least partially etherified or esterified, or a plasticized reaction product of the resol or derivative thereof with a hydroxy carboxylic acid or a glyceride of a hydroxy carboxylic acid and/or (C2) an esterification product of a polyhydric alcohol with (i) a resinic acid, or a mixture thereof with a fatty acid, and (ii) an adduct of an a ,b -unsaturated dicaroxylic acid or its anhydride with a resinic acid and/or a poly-olefinically unsaturated fatty acid having conjugated double bonds, the (C1) and/or (C2) components being not more than 40% by weight of the total weight of (A) and (B). Many components for the preparation of components C1 and C2 are specified. The epoxy resins are the reaction products of diphenols with epihalohydrins, dihalohydrins or diepoxides such as butadiene dioxide.  In the preparation of component (B) the epoxy resin may have an epoxy equivalence less than 1 and is reacted with an aliphatic polyamine.  The invention also comprises a hardening agent comprising a mixture of component (B) and components (C1) and/or (C2), and a composition curable by component (B) comprising a mixture of components (A) and (C2).  The compositions may also contain solvents and/or plasticizers.ALSO:Curable epoxy resin compositions comprising (A) an eopxy resin, (B) an adduct of an epoxy resin and a polyamine and (C1) a resol which may be etherified or esterified, or a plasticized reaction product of the resol or derivative thereof with a hydroxy carboxylic acid or a glyceride of a hydroxy carboxylic acid and/or (C2) an esterification product of a p  polyhydric alcohol with (i) a resinic acid or a mixture thereof with a fatty acid, and (ii) an adduct of an a ,b -unsaturated dicarboxylic acid or its anhydride with a resinic acid and/or a polyolefinically unsaturated fatty acid having conjugated double bonds, the (C1) and/or (C2) components being not more than 40% by weight of the total weight of (A) and (B) and a solvent are spray coated on metal sheets and glass plates.  Iron is the metal specified and it is also stated that wood, concrete and stone may be coated.
Patent GB-120567-A (GB)
Title: Improvements in or relating to Ball Bearing Cages.
Inventor: OHLSSON JOHAN ABRAHAM
IPC: F16C33/42
Filed: 1918-10-17
Abstract: 120,567. Ohlsson, J. A. Oct 23, 1917, [Convention date]. Ball bearings.-A cage for ball bearings comprises a conical ring formed with recesses extending from one edge so that the cage can be placed laterally on to the balls in the bearing. One or both edges 3 are cylindrical. The recesses may be closed by a ring 6 fitting into a groove. The recesses may have flanges 10 with spherical surfaces fitting against the balls. The recesses may be made by means of a cylindrical cutter having a spherical end which is advanced in a direction parallel to the axis of the cage.
Patent GB-1499397-A (GB)
Title: Pesticidal compositions
IPC: A01N25/04
Filed: 1975-04-24
Abstract: 1499397 Plant protection BRITISH PETROLEUM CO Ltd 6 April 1976 [24 April 1975] 17014/75 Heading A5E A method of protecting plants comprises treating soil from which the plants are subsequently to emerge with an emulsion of water, from 0.01-10% wt. by wt. of total composition of a systemic pre-emergence pesticide and from 0.1-10% vol. by vol. of the emulsion of a mineral oil having a viscosity of from 1-50 cs at 37‹C, the emulsion being applied pre-emergent to the plants and, in the case where the pesticide is a herbicide intended to protect plants from unwanted weeds, pre-emergent to the weeds also.
Patent GB-118523-A (GB)
Title: Improved Fountain Pen.
Inventor: HORNE HUGH WYLIE
IPC: B43K5/06
Filed: 1917-11-20
Abstract: 118,523. Horne, H. W. Nov. 20, 1917. Reservoir pens.-In a self-filling reservoir pen of the type comprising a reservoir B sliding in a barrel A provided with a central inlet tube E, a guide-tube H secured to the reservoir and provided with apertures J works on the central tube E, and the reservoir is provided with a slot L which can be made to coincide with an aperture M in the tube E to regulate the supply of ink to the nib. To fill the pen, the nib end F is immersed in ink and the reservoir B drawn out, the ink then passing up the tube E, overflowing at the top into the space between the tubes E, H, and escaping through the apertures J into the reservoir B; the reservoir is then returned to the normal position, a valve R' on an extension R closing the top of the tube E. The aperture M is smaller than the apertures J. In a modification, the member B does not extend to the nib end of the barrel A. The reservoir B is detachablv connected to the barrel by a sleeve N,
Patent GB-687823-A (GB)
Title: Means for measuring the individual components, in two directions at rightangles to one another, or a force applied to a control column
Inventor: PATTERSON REGINALD NORMAN
IPC: B64C13/00
Filed: 1951-07-19
Abstract: 687,823. Electric indicating systems. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., Sir W. G. Nov. 27. 1951 [July 19, 1951], No. 17141/51. Class 40 (i). The components in two directions at right angles to each other, of the force applied to a control column, e.g. of an aircraft, are measured by means of resistor type strain gauges, two sets of which are respectively attached to two opposite pairs of faces of the column normal to the two directions. As shown, the control column 12 is of square section and secured in a tubular hub 11 mounted for universal movement and having a rim 24 embracing the column 12 to prevent undue strain thereof. The column has two sets of strain gauges 16a-16b-17a-17b, and 16b-16c-17b- 17c each set consisting of two pairs 16a-17a, 16b-17c and 16c-17c, 16d-17d secured to opposite faces of the column, Fig. 3. Some or all of the gauges measuring the strain in each of the two directions concerned are arranged in bridge measuring circuits. For example, the gauges 16a, 16b of one set may form two of the arms of a bridge with fixed resistors forming the remaining arms or both pairs 16a-17a, 16b-17b, of the set may be arranged to form the four bridge arms, Fig. 4, differentially connected galvanometers 19 measuring the strain in the two senses of the direction concerned. Resistors 16c-d, 17c-d, similarly connected in another bridge would measure the strain in the second direction. Fig. 6 (not shown) illustrates a bridge arrangement in which four pairs of strain gauges 16a-17a, 16b-17b, 31a-32a, 31b-32b are used for measuring the strain in one of the directions.
Patent GB-347932-A (GB)
Title: Interlock electric switch device for manually and electrically operated valves and sluices
IPC: F16K31/04
Filed: 1930-06-04
Abstract: 347,932. Electrically-actuated valves ; accessories. GLENFIELD & KENNEDY, Ltd., Kilmarnock, Ayrshire, and BALL, E. B., 55, Midton Road, Ayr. June 4, 1930, No. 17146. [Class 135.] An interlock electric switch device, for providing for alternative manual actuation in electricallyoperated valves, comprises a switch box 1<1>, Fig. 2, with a hinged cover 2 carrying spring-pressed contacts 10, 11, Figs. 2 and 4, which bridge the contact bars 5, 6 of the electric supply leads when the box is closed. When the lid 2 is opened the circuit of the motor is broken, and the end 3<1> of the valve operating or motor spindle exposed for manual operation. A number of valves may be protected in the same way by an interlock switch box at each valve so that the opening of any one of the boxes breaks the power circuit and renders the valves inoperative by electric power.
Patent GB-1381797-A (GB)
Title: Method of manufacturing high fireproof calcium aluminate cement
IPC: C04B7/32
Filed: 1972-04-13
Abstract: 1381797 Calcium aluminate cement INSTYTUT MATERIALOW OGNIOTRWALYCH 13 April 1972 [28 April 1971] 17163/72 Heading C1H Calcium aluminate cement is made from a mixture of raw materials acting as a source of lime and alumina and which are contaminated with ferruginous material by sintering the mixture at 800 to 1500 C. in the presence of 3 to 50 wt. per cent (based on the weight of raw materials) of anhydrous CaCl 2  or a molar equivalent of the hydrate thereof until substantially the whole of the iron has been volatilized as FeCl 3 . If the source of alumina is heavily contaminated with iron, this may be sintered with a sufficient proportion of the total weight of CaCl 2  to remove the impurities as FeCl 3 , and then sintered with the lime and remaining CaCl 2 . A part of the CaCl 2  may be replaced by chlorides of Mg, Na, K or Al.
Patent GB-726939-A (GB)
Title: Steroids
IPC: C12P33/00
Filed: 1952-07-08
Abstract: The invention comprises 14a , 17a , 21-trihydroxy - 4 - pregnene - 3,20 - dione or a 21-acyl ester and the preparation thereof by bringing into contact 17a ,21-dihydroxy-4-pregnene-3,20-dione or an ester thereof with oxygenating enzymes produced by a growing fungus of the genus Helicostylum, e.g. Helicostylum piriforme, under aerobic conditions.  Preferably the fermentation is conducted under aerobic conditions using a viable fungus and in the presence of a nutrient medium for the fungus.
Patent GB-269370-A (GB)
Title: Improved device for indicating the correct working of sparking plugs and magnetos of explosion motors
IPC: H01T13/46
Filed: 1926-07-09
Abstract: 269,370. Barnett, J,, and Salisbury, E. July 9, 1926. No Patent granted (Sealing fee not paid). External spark gaps for interposition between a sparking-plug and the source of current consist of an ebonite or mica sleeve 4, longitudinally divided and bored to receive the bared ends 7, 8 of the conductors, such ends being set at a predetermined distance to form a spark gap. A glass tube 10 encloses the gap and its mounting and a further protective sleeve 11 surrounds the glass, openings for viewing the gap being provided in the sleeve 4, 11.
Patent GB-1004393-A (GB)
IPC: C07C5/44
Filed: 1964-04-27
Abstract: Styrene is prepared from a mixture of C8 aromatic hydrocarbon containing ethylbenzene and m- and/or p-xylene by contacting the mixture with at least 0.25 mole of iodine per mole of ethylbenzene above 430 DEG  C. in presence of an acceptor comprising a metal compound capable of binding hydrogen iodide as metal iodide and separating the styrene from the reaction product. Acceptors used are oxides or hydroxides of alkali metals, e.g. lithium, sodium and potassium, and the oxides or hydroxides of calcium, nickel, zinc, cadmium, indium, lead tin, manganese and iron and the rare earth metals.  The hydrocarbon starting material may contain 10 to 90% by weight of ethylbenzene based on the weight of ethyl benzene, m- and p-xylenes and the contact time is preferably 0.1 to 5.0 seconds.  The iodine and the acceptor may be regenerated by reacting the liquid metal iodide formed during the reaction with oxygen or an oxygen-containing gas either in situ or in a separate regeneration vessel, the oxide and/or iodine being recycled to the reaction vessel.  The reaction preferably takes place at 500 DEG  to 590 DEG C. and the acceptor may be a melt or a fixed or fluidized bed and a carrier, e.g. silica or alumina may be used. When in situ regeneration takes place, the mol. ratio of oxygen to ethylbenzene is 0.5-3.0 : 1.
Patent GB-1237019-A (GB)
Title: Improvements in or relating to charged particle beam apparatus
Inventor: BROWNING GEORGE WILLIAM
IPC: H01J37/02
Filed: 1969-04-02
Abstract: 1,237,019. Discharge apparatus. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 2 April, 1970 [2 April, 1969], No. 17343/69. Heading H1D. An apertured plate 1 is movable along two axes within the casing 6 of a charged particle beam apparatus such as an electron microscope by means of inner and outer control members 10 and 5. In Fig. 1 the plate 1 is pivoted at 8 to the tubular member 5 which is sealed to the envelope by an O-ring 7 and which is movable along its axis. The inner member 10 is sealed to the tube 5 by the O-ring 16 and terminates in a ram 9 which tends to rotate the plate 1 against a return mechanism formed by a spring-biased member 12, so that movement of the member 10 along its axis causes transverse movement of the remote end of the plate 1. The tube 5 is movable longitudinally by means of a rack and pinion (Fig. 2, not shown) driven by a Geneva cross mechanism from a motor 17; the casing of the Geneva mechanism may be rotated through a small angle by means of a cam driven by a motor 31 to give a fine adjustment. The inner member 10 is moved by means of a cam 29 bearing on its end and driven by a motor 27. The plate 1 may include apertures 2-4 of different sizes which may be moved into the path of the beam, or may support a number of specimens for examination.
Patent GB-1375184-A (GB)
IPC: F02N15/06
Filed: 1971-05-26
Abstract: 1375184 Starters for internal-combustion engines JOSEPH LUCAS (INDUSTRIES) Ltd 6 March 1972 [26 May 1971] 17352/71 Heading F1K A starter for an internal-combustion engine includes a pinion assembly 19 carried by a rotor shaft 12 there being a helically splined connection between the rotor shaft and the pinion assembly an electromagnet 23, 24 housed within the starter casing 11 and a plunger 25 associated with the electromagnet, the plunger being non- rotably mounted within the casing and being urged to a retracted position by resilient means. Coupling means 32 connects the plunger to the pinion assembly so that movement of the plunger in response to energization of the electromagnet moves the pinion assembly towards the operative position and the coupling means incorporates a friction brake 34 operable during movement of the pinion assembly 19 towards its operative position under the action of the electromagnet to resist rotation of the pinion assembly 19 relative to the casing 11. The friction brake may include a pair of parts having frusto-conical mating surfaces. The starter rotor includes a field winding but permanent magnets could be used for generating the field.