baber/WOPTO huggingface dataset:
Patent GB-791370-A (GB)
Title: A process of preparing hydroxyl end-blocked liquid organopolysiloxanes
IPC: C08G77/00
Filed: 1956-05-09
Abstract: Liquid hydroxylated organopolysiloxanes are made by heating a mixture of (1) an organosiloxane of the average general formula RnSiO 4-n/2 wherein R is a monovalent hydrocarbon radical an n has an average value of from 1.9 to 2.0 inclusive; (2) water; (3) a nitrile of the formula R1CN, where R1 is an alkyl radical containing less than 4 carbon atoms, in amount of at least 1 per cent by weight of the siloxane; and (4) a catalyst which is an alkali metal hydroxide, a quaternary ammonium hydroxide or an alkali metal or quaternary ammonium-salt of an organosilanol, in amount such that the ratio of alkali metal atoms or nitrogen atoms in the catalyst (4) to silicon atoms in the siloxane (1) ranges from 1:100 to 1:60,000, at a temperature below 175 DEG  C. until the desired viscosity is obtained.  The siloxanes used are primarily diorganosiloxanes and may contain up to 10 mol. per cent of copolymerized monoorganosiloxanes, silicon-bonded organic radicals being alkyl, alkenyl, cycloaliphatic, aryl or aralkyl.  Many catalysts are specified.  The water may be used in excess, though there is no advantage in using more than 1 mol. of water per prime mol. of siloxane.  The process may be conducted in a continuous or batchwise manner.  As the reaction proceeds the viscosity of the starting siloxane may either increase or decrease depending on the original viscosity and the amount of water present; the lower the concentration of water the greater will be the viscosity of the end product.  The products are useful in rendering fabrics water-repellent.  In examples hydroxyl-terminated siloxane liquids are made in the above manner from (1,3,4,5,11,12) mixed cyclic dimethylsiloxanes, (2,9) mixed cyclics containing 7.5 mol. per cent phenylmethylsiloxane and 95.5 mol. per cent dimethylsiloxane, (6) tetramethyltetraethylcyclotetrasiloxane, (7) pentamethylpentavinylcyclopentasiloxane, (8) octamethylcyclotetrasiloxane, and (10) a cohydrolysed methylsiloxane composed of 99.99 mol. per cent of dimethylsiloxane and 0.01 mol. per cent of monomethyl siloxane, using as catalysts (1) KO(Me2SiO)2K, (2 to 10) NaO(Me2SiO)2Na, (11) Et4NO(Me2SiO)2NEt4, and (12) phenyltrimethyl-, benzyltrimethyl, vinyltrimethyl -, tri - (b  - hydroxyethyl)methyl-, trimethyloctadecyl - and hydroxycyclohexyltributyl - ammonium hydroxides.  Specification 671,579 is referred to.
Patent GB-163716-A (GB)
Title: Improvements in frequency multipliers for alternating electric currents
IPC: H01J21/20
Filed: 1921-05-25
Abstract: 163,716. Trichard, P. May 26, 1920, [Convention date]. Addition to 160,179. Frequency, changing. - The two thermionic valves used in the frequencydoubling arrangment described in the parent Specification are combined in one unit having a single filament f or two filaments in series connected to terminals a, two grids g<1>, g<2> connected to terminals c, and two anodes p<1>, p<2> connected to a terminal b.
Patent GB-975934-A (GB)
Title: Improvements in and relating to heat exchanging elements
Inventor: RICHARDS CLEMENT JOHN
IPC: F28F9/22
Filed: 1960-04-26
Abstract: 975,934. Heat exchangers. ENGLISH ELECTRIC CO. Ltd. April 21, 1961 [April 26, 1960], No. 14578/60. Heading F4S. [Also in Division G6]. A heat exchanger element for use in an oil cooler, feed water. heater, or steam condenser comprises a number of parallel hollow longitudinal members arranged in at least two groups in longitudinally intersecting planes and a number of separate flat baffles arranged on the outside of the longitudinal members, each baffle of each group extending across the whole group at an angle to the longitudinal direction. In Figs. 1 and 2, the longitudinal members are open-ended tubes 1 arranged in two groups at right angles in a cylindrical channel 2 and the baffle plates 3 are all inclined in the same sense e.g. at 45 degrees to the longitudinal direction. The baffles cause vortex flow fields as shown by the arrows in Fig. 2 in the coolant flowing through the channel 2. In another embodiment, the inclination of the baffles is reversed in alternate radial planes.- A further embodiment shows hollow plate-shaped elements of rectangular cross-section. In another arrangement, three radially spaced thin webs 12, Fig. 6, each support a hollow tubular member 1. More than four groups of longitudinal members may be provided and if the number is odd the baffles must all be inclined in the same sense but if the number is even alternate groups may have baffles with reversed inclination. The heat exchanger element may be applied in a nuclear reactor (see Division G6).
Patent GB-744628-A (GB)
Title: Means and method for assembling electric circuit components
Inventor: BRUCK GEORGE G
IPC: H05K7/06
Filed: 1953-05-26
Abstract: 744,628. Electrical-component assemblies. SPECIALTIES, Inc. May 26, 1953, No. 14644/53. Class 40 (5). An assembly of electrical components comprises a strip of flexible insulating material 1 on which the components arranged in groups 2, 3, 4 and 5 are mounted, the components being held to the strip by loops 6 of a thermosetting plastic material or a fabric coated with such material. The loops are attached to the strip 1 by the application of heat and pass round the components, supporting them, as more clearly seen in the side view of Fig. 2. Further small components, e.g. 7 and 8, may be supported by similar loops 11 and 12 attached to the loops 6. The groups 2, 3, 4, 5 of components are so spaced along the strip, that the strip may be wrapped up, starting from the left-hand end in Fig. 1, to form a rectangular package as shown in Fig. 3. In the arrangement illustrated, a metal screen is arranged around the components of group 2, the strip 1 being folded back on itself at A and the folded-back portion 21 being secured by a piece of tape 22 thereby forming a pocket in which a thin copper screen 20 is placed so that it completely surrounds the components the group 2 when the assembly is wound up. The wound-up assembly, as shown in Fig. 3, is placed in a metal can the leads 16 being soldered to terminals passing through a glass insert in the base cover of the can before the side-wall portion is slipped over the package. The side walls and base cover are soldered together and the can and contents are heated to remove moisture. The can is then partially filled up with a solid filling material, after which the top cover of the can is soldered in place and the container is filled, through an aperture in the top cover, with a thermosetting resin. The aperture in the top cover is then sealed with a cover plate which is soldered in place.
Patent GB-933582-A (GB)
Title: Improvements in or relating to hydrostatic devices
IPC: G05G5/04
Filed: 1962-04-16
Abstract: 933,582. Hydraulic transmission of power. PLESSEY CO. Ltd. April 16, 1962 [April 14, 1961], No. 14679/62. Class 69 (2). In a ship, an internal-combustion engine 1 has its speed controlled by a device 2 adjusted on rotation of a hande 3 connected by links 4, 12 to two stops 11, 15 rotatable about pivots 10, 14, and a ratio shift lever 8 is fast with the pump 6 of an hydrostatic transmission of which the motor (not shown) in turn drives through a coupling 16 to the ship's propeller, hand actuation of the shift lever 8 tilting the pump about a pivot 7 to vary the transmission ratio, the stops 11, 15 limiting the extent of this tilting movement. The arrangement is such that with the handle 3 and the speed control 2 set so that the internal-combustion engine 1 drives slowly, the distance between the stops 11, 15 is at a maximum and the shift lever 8 can be turned to tilt the pump as far as possible. The higher ratio thus obtainable in the transmission enables the engine 1 to be used at its most economical loading.
Patent GB-1448080-A (GB)
Title: Optical fibre transducer
IPC: C03B37/012
Filed: 1975-04-10
Abstract: 1448080 Making optical fibres STANDARD TELEPHONES & CABLES Ltd 10 April 1975 14757/75 Heading C1M [Also in Division G2] A method of making optical fibre transformation sections (e.g. for redistributing the optical energy across the wavefront leaving one component in order to match it for launching into another) includes the steps of (1) forming an optical fibre preform whose core has a longitudinal periodic structure in its refractive index profile; (2) drawing the preform down to reduce its cross-section and (3) parting the drawn preform at intervals along its length to produce optical fibre transformation sections, the two ends of each of which have core crosssections which differ either in size or shape, or in size and shape. The preform may be made by inserting stacking components A, B of higher and lower R.I. respectively into a tube C of lower R.I. (Fig. 1A). The assembly is then drawn using conventional rod-in-tube techniques and the resulting fibre is parted by visual inspection. The components may be prismatic within a rectangular tube. In another embodiment (Fig. 2) short tubes A, B of higher and lower R.I. are stacked around a rod E of higher R.I. and inside a tube C of lower R.I. In a further embodiment (Fig. 3a, not shown) higher R.I. spheres are fitted into a circular tube, the spheres becoming prolate spheroids when drawn. In a modification (Fig. 3c, not shown) spheres are dropped one by one into a tube as it is being collapsed. In another embodiment (Figs. 4a, 4b, not shown) a bundle of fibres is deformed at periodic intervals and is then covered with lower R.I. material. In yet another embodiment (Fig. 5c, not shown) a set of ribs is ruled, etched or pressed into the central region of one major surface of a strip of lower R.I. The resulting indentations are then filled with glass of higher R.I. which is itself covered with a layer of lower R.I. before the assembly is drawn down and cut into lengths. In further embodiments (Figs. 6, 7a, 7b, not shown) the R.I. of selected portions of glass elements is altered by irradiation of ion exchange through a mask. The elements are then assembled into a preform. In the final embodiment (Figs. 8a, 8b, not shown) a clad fibre is made using an inner bushing containing a melt of higher R.I. core glass with an outer bushing of lower R.I. cladding glass. The relative pressure at the two nozzles is cyclically varied to produce the required periodic structure. If the two nozzles are at the same level the external diameter of the fibre will fluctuate but if the inner nozzle is above the outer, only the core diameter varies.
Patent GB-317745-A (GB)
Title: Improvements in and relating to automatic and semi-automatic exchange systems
IPC: H04Q3/00
Filed: 1928-05-21
Abstract: 317,745. Standard Telephones & Cables, Ltd., Wright, E. P. G., and Baker, J. H. E. May 21, 1928. Automatic exchange systems.-In a system in which common control circuits, as for example the marking switches described in Specification 295,421, are associated in multiple with groups of selectors, each group is divided into two subgroups, and an auxiliary control circuit common to all the groups is provided, the arrangement being such that when the normal control circuit of a group is taken into use by a selector in one sub-group, the auxiliary control circuit becomes available for use with selectors of the other subgroup. The Figure shows a group of selectors divided into two sub - groups S1 - - Sn, S<1>1 - -S<1>n, with a normal control circuit C, and an auxiliary control circuit C<1> which is also associated with other groups and which becomes associated with either sub-group by means of relays SR, SR<1> each controlled by the line relays of one sub-group of selectors. The groups may if desired be divided into more than two subgroups, and further auxiliary control circuits may be employed.
Patent GB-683052-A (GB)
Title: Food chopper
IPC: A47J45/02
Filed: 1951-06-22
Abstract: 683,052. Mincers. LANDERS, FRARY & CLARK. June 22, 1951 [Aug. 18, 1950], No. 14870/51. Class 28 (ii). A mincer is securely held down on its table 26, without clamps, by a pair of flanged support plates 24 which are pressed down on the top and edge of the table by the hand grip portion 21 of an arched tubular bridge piece 20 preferably integral with the spaced plates 24. Rubber &c. buttons 27 increase the frictional grip. The mincer housing 10 may be integral with or secured to the bridge piece 20.
Patent GB-683597-A (GB)
Title: Improvements in or relating to cathode ray image reproducing devices
IPC: H01J29/24
Filed: 1951-06-22
Abstract: 683,597. Modifying surface reflection. RAULAND CORPORATION. June 22, 1951 [June 23, 1950], No. 14876/51. Class 97 (i). [Also in Group XL (a)] An image reproducing cathoderay tube has a fluorescent screen formed on a viewing window consisting wholly or mainly of glass and having a reflectivity measured at incident and reflected angles of 35 degrees to the normal, of between 1 and 4 per cent of that of a mirror surface; this is accomplished by forming the outer surface of the window with nodular protuberances of 5 to 100 microns in diameter and 5 to 20 microns in height. The window may be formed by (a) liquid honing or vapour blasting and then etching with hydrofluoric acid as described in Specification 683,596; (b) frost etching the surface with a composition incorporating ammonium bifluoride to make the surface matte, and then etching; (c) fusing a ceramic frit into the window surface and then etching; the etching in (b) and (c) also being by hydrofluoric acid. The fluorescent screen is formed as a coating 12 on the inner surface of the window 11 as shown in Fig. 3. For glass bulb tubes the reflectivity of the window is 2 to 4 per cent of that of a mirror surface and the nodules 5 to 20 microns in height and 25 to 100 microns in diameter. Since the window varies in thickness, being thicker at the edges than at the centre, the reflectivity is made higher than would be necessary at the centre to maintain acceptable definition over the whole picture. For " metal cone " tubes the glass window is thinner and of more uniform thickness than in the glass bulb type and suitable parameters are a reflectivity of 1 to 2 per cent of that of a mirror surface and nodule dimensions of 5 to 20 microns in height and 5 to 25 microns in diameter.
Patent GB-943722-A (GB)
Title: Improvements relating to separation of pulverised material
Inventor: RASMUSSEN FRITS
IPC: B07B11/06
Filed: 1962-04-17
Abstract: 943,722. Air separators. F. L. SMIDTH & CO. A.S. April 17, 1962, No. 14884/62. Heading B2H. In an air separator, for separating pulverized material into two fractions of different grain sizes in which the air circulates in a closed circuit and the material to be separated is flung outwards centrifugally in a thin sheet from a rotating spreader plate, the material as it leaves the spreader plate being caught up in an upward current of air produced by one or more fans which may be mounted on the same rotating plate as the spreader plate, after separation at least one of the fractions is fluidized by blowing air into it, and this fraction flows out of the separator in a fluid state. In the embodiment shown in Fig. 1, the spreader plate and fan are not shown, but are driven by a motor 3. The material to be separated is fed into a pipe 2 and after separation the fraction of coarse grain size falls into an inner chamber 5 and the finer grain size fraction falls into an outer annular chamber 4. An air permeable plate 8 is spaced above the annular bottom 7 of the chamber 4 to form a passage 9 for the supply of air for fluidizing the finer fraction, so that it can pass by gravity to an outlet 12. The coarser fraction falls by gravity to an outlet 6, and the lower part 16 of the chamber 5 is removable to afford access to the interior of the separator. The outlines of the collecting chambers of a conventional separator are shown in chain dotted lines, and it is seen that the height of the separator is reduced by the use of the invention. In the embodiment shown in Fig. 3 the coarser fraction in the inner chamber 22 is fluidized whilst the finer fraction falls by gravity to an outlet in the outer chamber 21. An air permeable plate 26 extends over the bottom 23 of the chamber 22 to form an air supply duct 27. Wedges 28, disposed parallel to the axis of the outlet 25 for the chamber 22, help to achieve complete fluidization of the coarser fraction which then moves under the influence of gravity to an outlet pipe 32.
Patent GB-888258-A (GB)
Title: Vertically moving axle for industrial truck
Inventor: ULINSKI BRONISLAUS IGNATIUS
IPC: B60G11/14
Filed: 1960-04-28
Abstract: 888,258. Road vehicle undercarriages. YALE & TOWNE MANUFACTURING CO. April 28, 1960, No. 14887/60. Class 108(2). An industrial truck has an axle 14 with a wheel 12 mounted for rotation at each of its ends, an axle support 17, means 18 for mounting the axle on the support for pivoting movement on an axis longitudinally of the truck, parallelogram links 24, 25 mounting the support 17 for vertical movement relatively to the truck, and yielding means 38 opposing the vertical movement of the support. The wheel mountings 15 are connected by a tie member for steering while the angular movement of the axle 14 is limited by stops 22. A shock absorber 43 is provided and downward movement of the links 24, 25 is limited by the engagement of nuts 42 with brackets 39 on the truck frame 36. Specification 772,717 is referred to.
Patent GB-501630-A (GB)
Title: Improvements in or relating to the manufacture of bakery products
IPC: A23J1/02
Filed: 1938-05-19
Abstract: 501,630. Bakery products ; albumens. HILTNER, P. P. May 19, 1938, No. 14997. [Class 49] [Also in Group IV] In manufacturing bakery products, albumen obtained from muscle fibres of animal origin and partially or wholly freed from the more readily. water-soluble components and from fatty substances is incorporated in the baking mixture which is then baked. The albuminous substances may be converted into watersoluble form by disintegration or degradation chemically or biologically, dried, ground, and, if desired, sieved. They may be used in the form of aqueous dispersions or solutions, or, beaten up with air as a froth or foam, or combined with the flour to which they may be added as powder or in solution or by precipitation, or with disintegrated starch or other thickening agants, or with other types of albumen of animal or vegetable origin, e.g. from yolks, whites or whole eggs, or with fatty substances in an aqueous medium, e.g. in milk in an emulsion which may also contain lactic or. other organic acids or in sour milk, or with carbohydrate materials, e.g. sugar or malt flour. In an example, animal muscle fibres, e.g. from fresh codfish flesh, are comminuted, suspended in water, adjusted to pH4, e.g. with citric acid, maintained with stirring at 65‹ C. for up to about an hour, centrifuged to remove the main portion of the water and colouring and odour- and taste-imparting and fatty substances and mineral content. This intermediate product is extracted with alcohol to remove residual fat, swelled in water with alkali, heated, e.g. to 90‹ C. for a short time and wholly or partially neutralized by addition of acid, a water-soluble product resulting. Both the intermediate products, which are not wholly soluble or swell in water only, and the soluble end product may be used in baking. The intermediate products may, for example, be added dry to the baking mixture for biscuits. In examples: (1) butter biscuits are prepared from a dough containing the water-soluble albumen, flour, sugar, butter, ammonium carbonate and spice; (2) a foam mass for use in producing meringues .is obtained by dissolving 33, gm. of the water-soluble albumen in 500 gm. of water with 1500 gm. of sugar and beating up the solution, preferably warmed; (3) in making sponge cake an aqueous solution of the albumen is mixed with whole egg and made into a dough with maize starch, maize flour, sugar, butter or other fat, baking powder and spices.
Patent GB-899093-A (GB)
Title: Door handle for vehicles
IPC: E05B1/00
Filed: 1959-05-01
Abstract: 899,093. Handles; securing upholstery. HAPPICH G.m.b.H. GEB. May 1, 1959 [May 2, 1958; Aug. 2, 1958], No. 14998/59. Classes 52(1) and 52(4). A vehicle door handle, adapted to actuate latching means, comprises (Figs. 1 and 3) a rigid handle part 1 formed with a longitudinal channel 6 in its outer surface receiving padding 10 enclosed in a plastics envelope 11, the envelope containing a rigid plate 12 to stiffen it where it lies in the channel 6. The channel has undercut side walls. As shown in Fig. 4, the part 1 has hooks 13 near its ends engaging in holes in plate 12. In a modification (Fig. 7, not shown), plate 12 has rivets extending through holes in part 1. As shown in Fig. 12, the padding lies in a recess 6 in the handle part 1<SP>1</SP>, the padding and the part 11 being within a plastic envelope 17. As shown in Figs. 14 and 15, the padding is secured between a cover 26 and a base 28 the latter having flanges 29 embracing the handle part 1 and projections 31 received in holes in the part 1.
Patent GB-1394337-A (GB)
Title: Work holding device for holding miniature cylindrical parts
IPC: B25B9/00
Filed: 1973-03-29
Abstract: 1394337 Gripping tools P A SHEVINOV 29 March 1973 15088/73 Heading B4W A device for holding miniature cylindrical parts comprises a body 1 having at one end a pair of opposed flat strip elements 2 which constitute jaws, and a central passage 3 in which there is a push rod member 4 which acts as an ejector for parts held between the jaws, the member 4 having an end piece 5 which is slightly smaller than but of similar shape to the passage 3 and has a groove 18 in its end face, the groove laying transversely to the plane of movement of the jaws 2. Cantilever springs 17 urge the jaws to their gripping position. The body 1 is slidably arranged in an outer bush member 6 and is upwardly spring biased within the member 6 by a spring 11. A spring 10 stronger than spring 11 acts between the body 1 and an enlarged portion of the push rod member. The latter has a projection 9 passing through the casing, depression of the projection 9 causing the body 1 together with the jaws, and push rod member to move downwardly (compressing spring 11) to the limit of a groove 12 in the body 1 which co-operates with stop member 13. Continued downward movement of the projection 9 causes the end piece to move downwardly relative to the jaw elements 2 (thereby compressing spring 10 since body 1 is arrested by the stop 13) to eject a workpiece from between the jaws 2. End piece 5 has slots in its side surfaces which accommodate the jaws 2.
Patent GB-1435691-A (GB)
Title: Seat cushion
IPC: A47C7/18
Filed: 1972-03-30
Abstract: 1435691 Securing seat upholstery COX OF WATFORD Ltd 30 March 1973 [30 March 1972] 15105/72 Heading A4M A cushion for a vehicle seat or back comprises padding 10, 21 secured to and within the underside of a cover 9 having a free, flexible peripheral edge portion 49 formed as or integral with a generally U-shaped engagement section 11 or 27 which has a hook-like engagement over a lip 7 of a seat frame 4 or 15. The engagement section may be held in engagement with the lip 7 by tags 25 or by a resiliently deformable and removable locking strip 12 or 22. The back rest frame 29 may be embedded in the padding or in a rigid foam backing layer 18.