baber/WOPTO huggingface dataset:
Patent GB-1477685-A (GB)
Title: Electrical circuit devices
IPC: H05K3/40
Filed: 1974-08-02
Abstract: 1477685 Printed component assemblies ALLEN-BRADLEY CO 2 Aug 1974 [20 Aug 1973] 34149/74 Heading H1R [Also in Division H2] A circuit device comprises an electrically insulating body 10, e.g. of alumina or steatite, having circuitry 22 disposed on one or both opposed surfaces 11 and a groove 13 in one or both longitudinal edges 12, the grooves 13 having expanded portions 15 alternating with constricted portions forming slots and having chamfered surfaces 17 on the slots 16 and on the ends 14 to facilitate insertion of electrical leads 28 and each slot having a conductive coating 20, e.g. fired silver paste extending around the edge 12 to a region 21 on each surface 11 where it is overlaid by and makes electrical contact with the circuitry 22, the regions carrying circuitry being interconnected by bands 23 e.g. of a conductive cermet material. The circuitry 22 may comprise a resistive network of a cermet resistor material in which case the leads can be attached by passing through a solder bath after insertion in the slots, since the solder will not adhere to the cermet material, or the leads and slots can be coated with solder pellets put in the slots prior to insertion of the leads. The leads may be formed integrally with a common carrier portion (29, Fig. 4a, not shown) which is cut off after attachment of the leads. If cermet resistors are used they can be trimmed, e.g. by laser techniques prior to the application of a protective e.g. plastics coating (32, Fig. 6, not shown) which may be colour coded to identify the resistors and have identification characters (33) printed on it. The grooves 13 may be terminated by end portions 14 as shown or may extend the entire length of the body 10.
Patent GB-521653-A (GB)
Title: Improvement in urea formaldehyde resin adhesives
IPC: C08G12/12
Filed: 1938-11-24
Abstract: 521,653. Urea-aldehyde condensation products. RESINOUS PRODUCTS & CHEMICAL CO. Nov. 24, 1938, No. 34166. Convention date, Dec. 28, 1937. [Class 2 (iii)] A stable aqueous solution of a urea-formaldehyde intermediate condensate, suitable as a heat-hardenable adhesive, is obtained by heating a neutral aqueous solution of urea and formaldehyde in the presence of an amount of alkaline earth chloride chemically equivalent to 3-25 per cent. of calcium chloride, based upon the weight of urea, until the reaction mixture attains a viscosity of from 0.08 to 0.21 poises, and then cooling the mixture to stop the reaction. Urea may be partly replaced by thiourea, i.e., 5-20, preferably 10 per cent. from 1-2.5, preferably 1.7-2 mols of formaldehyde are employed per mol of urea. In an example, 5-10 per cent..of calcium chloride is added to a neutralized mixture of 1 mol of urea and 1.8-2 mols of aqueous formaldehyde and the solution heated to 85-90‹C. until the desired viscosity is attained, after which the mixture is cooled to 30-40‹C. and concentrated under vacuum to about 60-80 per cent. solids. Other examples are given, including thiourea and chlorides of calcium, magnesium, barium and strontium. The resin composition may be used for plywood, abrasives, laminated paper and textile finishing and may be mixed with plasticizers, e.g , polyhydric alcohols, sulphonamides, formaldehyde reaction products of carbamates and other resins for plywood, the solution is applied to the laminae by brushing, spraying or molten coating and the laminae pressed together and heated ; the hardening of the resin may be accelerated by applying to the laminae or adding to the resin solution an acidic condensing agent, e.g., diammonium phosphate. Commercial grade fertilizer urea may be employed.
Patent GB-629937-A (GB)
Title: An improved fastener
IPC: F16B5/10
Filed: 1947-12-24
Abstract: 629,937. Stud-and-socket fastenings. FAIREY AVIATION CO., Ltd., and ADDIS, W. A. Dec. 24, 1947, No. 34202 [Class 44] In a stud and socket fastener the stud 15 is formed with a part 15a of oblong cross-section for engagement with at least one spring 20, 21 anchored to the member 10 carrying the stud, the major axis of the oblong being transverse to the spring when the fastener is in the unlocked position and the minor axis of such a length that the springs are not loaded when the fastener is in the locked position. A cross-limb 17 for engagement with the second member 11 is formed with faces f7a serving as cams to pull the members towards one another during movement of the cross-limb from the unlocked to the locked position. The head 12 of the stud may be countersunk in the member 10 and slotted at 13 to facilitate rotation. Lips 25 formed adjacent the aperture 22 in the member 11 form stops limiting the rotation of the stud. In another form the head of the stud is rounded and not countersunk.
Patent GB-461302-A (GB)
Title: Improvements in double-acting internal combustion engines
IPC: F02B75/00
Filed: 1935-12-11
Abstract: 461,302. Two - stroke - cycle doubleacting engines. TRIGGS, W. W. (Young, R. D.) Dec. 11, 1935, No. 34273. [Class 7 (ii)] Combustion occurs in the spaces A, D between the stationary heads 10, 12 and the partition 8 in the piston 6. Compression takes place above the piston-head 7 and between it and the stationary head 10, of charge supplied through pipes 15, 16, 17. Transfer to the combustion-chambers is effected by way of the pipes 27 connecting the chambers C, A, and of a similar pair of pipes in a plane at right angles, for connecting the chambers B, D. Part of the compressed charge may be diverted to a reservoir for use at starting. The checkvalves 18, 19 in pipes 16, 17 are opened to the atmosphere and closed to the supply through the pipe 15 during the period of compressedair starting. Cylinders ; cooling.-The heads 10, 12 are mounted on eccentric trunnions whereby the compression-ratio can be varied, and the heads aligned with the surrounding sleeve. Worm and wheel gearing 13a, 13b is provided for adjustment purposes. Lubricating oil conduits 52 pass axially through the trunnions and thence to the hollow heads 10, 12 for cooling.
Patent GB-348626-A (GB)
Title: Improvements in spark plugs
IPC: H01T21/02
Filed: 1929-11-09
Abstract: 348,626. Sparking-plugs. A.C. SPARK PLUG CO., Flint, Michigan, U.S.A. Nov. 9, 1929, No. 34292. Convention date, Dec. 7, 1928. Void [Published under Sect. 91 of the Acts]. [Class 7 (iv).] Lateral pressure of the insulating layer 17 against the central conductor 11 is produced by axial pressure on the metal bushing 18. Deformation of the parts 22 of smaller diameter is produced successively by electrically heating while the pressure is imposed. The grooved nut 27 and the casing S may be similarly treated. A metal sleeve 26 may surround the wrappings 17 which may extend at each end into mica washers.
Patent GB-1285557-A (GB)
Title: Linear motor speed control system
Inventor: WILSON DAVID HENRY
IPC: B60L15/00
Filed: 1968-07-18
Abstract: 1285557 Automatic speed control TRACKED HOVERCRAFT Ltd 8 Oct 1969 [18 July 1968] 34336/68 Heading G3R A speed control system for a vehicle propelled by a three-phase linear induction motor, includes means for generating a modified demand speed signal arranged to change at a limited rate. This signal is compared with an actual speed signal, and the resulting error signal is used to determine the firing angles of a thyristor regulator in the motor supply. In the system described, the vehicle is a tracked hovercraft having a speed control lever 18, Fig. 5. A demanded speed signal is fed on a line 38 to a saturable operational amplifier 39 followed by a limiter 40. The signal then passes through an integrator 41 which produces a modified demand speed signal which is fed back to the amplifier 39 input and also to a speed control circuit 35, shown in more detail in Fig. 2. In use, a rapid change in the demand signal on line 38 causes the amplifier 39 to saturate so that the integrator 41 integrates at a fixed rate resulting in uniform acceleration of the craft until the demanded speed is attained. Referring to Fig. 2, the modified demand signal is compared with an actual speed signal in a device 20, the resulting error signal being passed to an operational amplifier 23 and then to the firing circuit 24 of a thyristor regulator 25 arranged in the input to the linear motor 28. The thyristor firing angles are thus adjusted until the motor drives the vehicle at the required speed. If the error signal changes polarity, the output of amplifier 23 reverses and the thyristor gating pulses disappear. The motor current now decays, and when it reaches zero a logic circuit 30 receives a signal which, together with a polarity change signal from a comparator 32, causes a circuit 22 to reverse the polarity of the input to amplifier 23, and a circuit 26 to reverse two of the supply input phases. The motor 28 thus produces reverse thrust.
Patent GB-282470-A (GB)
Title: A portable mixer for concrete and other building materials
IPC: B28C5/44
Filed: 1927-12-19
Abstract: 282,470. Schmid, L., Schmid, L., and Schmid, F. Dec. 27, 1926, [Convention date]. Rotary mixers.-A concrete &c. mixer comprises a box mounted for rotation on a onewheeled barrow about an axis running longitudinally so that the box can be discharged to either side. The box b is rotated by hand gearing h, f, 9 and is mounted on standards d. One side of the box is formed as a sliding lid l and the interior may be provided with cross-bars k supported by struts n, and with inwardly-projecting parts o. The box discharges into a shoot p.
Patent GB-1167999-A (GB)
Title: Sodium Chloride Composition
Inventor: BACHMANN RUDOLF
IPC: B01J2/30
Filed: 1967-07-26
Abstract: 1,167,999. Non-caking salt preparations for preserving food. SALZDETFURTH A.G. 26 July, 1967, No. 34364/67. Headings A2B and A2D. [Also in Division C1] Sodium chloride, which has been rendered non-caking by the addition of a substituted morpholine or salt thereof, is used to preserve foodstuffs, such as, cucumbers, cabbage, or meat, or as a cooking salt. The substituted morpholine has the formula : - where R is a straight or branched chain paraffinic or olefinic hydrocarbon residue with 6-22 carbon atoms, and the salts may be formed with HCE, H 2 SO 4 , HNO 3 , H 2 PO 4 , or acetic acid. The non-caking sodium chloride may be dissolved in water or dilute acetic acid.
Patent GB-1111888-A (GB)
Title: Coking of coal
IPC: C10B49/04
Filed: 1965-08-11
Abstract: A method of coking coal comprises passing the coal on a travelling grate through a series of zones in sequence, and introducing preheated oxygen-containing gas into each zone, the gas delivered to the initial zone or zones being at a relatively high temperature, e.g. 500 DEG  to 600 DEG  C., and that delivered to the following zones being at a lower temperature, e.g. 250 DEG  C.  The coal may be in lump form or be briquetted, and the oxygen-containing gas may include CO2, flue gases, distillation gases from the coking process, and steam, in proportion which may vary for different zones.
Patent GB-864407-A (GB)
Title: Improvements relating to disc brakes
Inventor: REDMAYNE LEONARD
IPC: F16D55/228
Filed: 1958-07-11
Abstract: 864,407. Disc brakes. GIRLING Ltd. Oct. 12, 1956 [July 11, 1958], No. 34430/59. Divided out of 864,406. Class 103 (1). A disc brake in which the disc comprises a ring 11 extending inwardly from the periphery of a bell housing 10 to which it is secured, and opposite faces of the disc 11 are engaged by opposed friction pads or shoes 16 and 21, 29 of which one, 16, is located within the bell housing 10, which is provided with at least one opening in its peripheral wall through which that friction-pad can be inserted or removed .In one embodiment, Fig. 1, similar to that described in Specification 864,406, from which the present Specification is divided, the friction pads 16, 21 and 16, 29 are mounted at the ends of diametrically-extending pivoted levers, one of which, 19, is of " banjo " type, and the friction pads or shoes within the bell housing 10, may be inserted or withdrawn, through the hole 43 in the housing, to one side of the shoe. The actuating lever 23 and the second lever 24 are formed with laterally projecting bosses 37, which are received between the horns 15 on the fixed spider 14, which takes the torque on these members, when the brake is applied, and the beam 19 has similar bosses between the horns on the other side of the spider. In Figs. 2 and 3, the disc 45 is carried by the housing member 47, the pads 48 being gripped by oppositely non-pivotally mounted pistons 51, one of which may be withdrawn or inserted through the aperture 59.
Patent GB-337611-A (GB)
Title: Improvements relating to the preparation of combed wool and similar fibres in the preparation of fibrous materials for spinning
IPC: D01G99/00
Filed: 1929-11-12
Abstract: 337,611. Dubs, A Nov. 12, 1929. Drawing-frames; gill-boxes.-In the preparation of combed wool, silk, &c. for spinning, in the medium and fine stages of drawing, a double intersecting gill field r is used together with a rubbing-device v, w. A rotating funnel x may be added.
Patent GB-195437-A (GB)
Title: Improvements relating to engine pistons and cross-heads therefor
IPC: F02B75/28
Filed: 1921-12-22
Abstract: 195,437. Balanced Engine Syndicate, Ltd., and Kerr, R. P. Dec. 22, 1921. Guiding - means within cylinder; cross - heads and crosshead guides. - In an engine, e.g. of the Fullagar type, in which each crosshead is connected by side rods to a lateral reciprocating part, the side rods are attached to a cross-bar, which is arranged to clear the guide surface and is so arranged laterally that the thrust of the side rods lies approximately in the same plane as the connecting-rod thrust. The cross-head guide C<1> is formed by an extension of the cylinder C. The cross-bar G is carried by an extension g<1> of the cross-head E of the piston D, the parts being either integral, or separate and bolted together. The plane containing the side rods F, which are secured to the cross-bar G, passes approximately through the intersection of the cylinder axis and the axis of the gudgeonpin e<2>. In order to reduce the length of the extension g<1> and of the connecting-rod B, the guide surface C<1> may be cut away, as shown at H, to clear the cross-bar G. The side rods Fare attached to the upper cross-heads in a similar manner and the cross-head E may be attached in a similar manner to reciprocating parts on each side of the cylinder C. In the modification shown in Fig. 13, the cross-head guide C' is of larger bore than the cylinder. A distance piece is interposed between the cross-head E and the piston, by removing which the piston can be withdrawn through a gap H<2> in the cross-head guide, covered by a plate m. The cross-head is formed with a flattened surface e<3>, so that, by rotating the cross-head through 90‹, it can be withdrawn through the gap H<2>.
Patent GB-314750-A (GB)
Title: Improvements in the refining of sugar
IPC: C13B20/06
Filed: 1928-11-24
Abstract: 314,750. Wiese, H. Nov. 24, 1928. Purifying saccharine liquids. - Raw sugar solution is refined by heating it to a temperature above 70‹ C., adding lime, carbonating to neutrality, reheating to a temperature above 80‹ C. by injecting steam directly into the solution and filtering. Specification 12642/11 is referred to.
Patent GB-931521-A (GB)
Title: Improvements in and relating to electrical measuring instruments
IPC: G01R13/00
Filed: 1958-10-29
Abstract: 931,521. Electrical measuring instruments. J. RAWCLIFFE. Oct. 13, 1959 [Oct. 29, 1958], No. 34704/58. Drawings to Specification. Class 37. An instrument capable of measuring current or voltage in a low-frequency three-phase circuit, comprises three square law devices, one associated with each phase, the outputs of which are added together to give a single indication, each device being a square law instrument movement, a combined thermo couple junction heater, or a thermionic valve. The output moving members of the instruments may be mounted on a common spindle or otherwise linked, and the outputs from the thermocouples may be connected in series or parallel. In an alternative arrangement three resistors may heat a single thermocouple junction to produce a single output. Unbalance between the phases may be compensated by resistive or reactive shunts across one or more devices or by otherwise making the impedance of the one or more variable. Instruments of different types may be mounted on a common spindle.
Patent GB-431566-A (GB)
Title: Improvements in a method of aerating liquids
IPC: C12M1/06
Filed: 1933-12-11
Abstract: 431,566. Aerating liquids ; yeast manufacture. VOGELBUSCH, W., 1, Daffingerstrasse, Vienna. Dec. 11, 1933, No. 36883. Addition to 430,348. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 11, 1934.] [Classes 14 (i) and 14 (ii)] In aerating devices especially suitable for use in yeast fermentation vats, as claimed in the parent Specification, and which comprise a hollow body of shape offering small resistance to the liquid in the direction of its movement therethrough, and which is moved rapidly through the liquid in such a manner that the air escaping from comparatively large openings therein is broken up into very fine bubbles at the moment of escape, the hollow body is provided with air outlet holes only at points at such distances from the axis of rotation that the velocity necessary for atomization is available. In one form of apparatus embodying the invention, the hollow shaft A carries the aerating member, of either sword- or drop-shaped cross-section, and which consists of a hollow middle piece B with hollow agitating blades C. The latter have outlet openings directed preferably towards the bottom D of the vat, the cross-section of these openings being made gradually or in steps greater towards the periphery, if desired. The arms of aerating member may be made of sector shape, or as circular bodies at the ends of rectangular arms. The liquid is preferably guided by suitably placed plates F. In order to arrest the action of these plates, the cooling device for the wort may be constructed as a tube system R with a vertical or horizontal tube axis. The tubes r of this system may, for example, be rolled in carriers r<1>, r<2> secured to the wall of the vat, the cooling water or other liquid entering at Re and escaping at Ra. For guiding the water flowing through the tubes R, members r<3>, r<4> are provided. Two to four cooling elements R may be arranged diametrically opposite to one another, the lower parts r<3> being as near as possible to the blades C. In large vats the wort may be led positively past the aerating member C, (see Fig. 6). In this case, the part G lying near to the driving shaft is made in the form of screw blades and serves to deflect the wort. A ring K prevents any part of the wort delivered from the blades G from escaping outwardly directly, the lower edge of the ring forming a hydraulic seal. The cylinder J, which may be extensible upwards telescopically, feeds to the aerating member only such liquid as has lost its air on its way through the vat.
Patent GB-865068-A (GB)
Title: Improvements relating to resonant circuit arrangements of variable band-width
Inventor: FOTHERGILL ROWLAND ANTHONY CRA
IPC: H03J3/06
Filed: 1957-11-08
Abstract: 865,068. Radio receiving circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 27, 1958 [Nov. 8, 1957], No. 34907/57. Class 40(5) [Also in Group XL(b)] The band-width of a series-tuned circuit comprising inductance L and capacity C coupled to a generator G, being damped by circuit losses Rl and the internal impedance Ro of the generator, is varied without appreciable variation of the gain, by switching a further resistance R2 across the reactive elements L, C, of the circuit. Detuning caused by the residual series inductance Lr of the switch S and the capacity Cr of the contacts in the open position is compensated by a capacity Cl which is connected across the capacity C by a further pair of switch contacts S1. The arrangement is more particularly for use in a radar receiver operating on two different wavelengths for which different band-widths are required.
Patent GB-932307-A (GB)
Title: Bubble trays with variable gas passages, and valves therefor
IPC: C25D3/18
Filed: 1961-09-28
Abstract: 932,307. Gas/liquid contact apparatus. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Sept. 28, 1961 [Sept. 30, 1960], No. 34948/61. Class 55 (2). [Also in Group XXIX] The openings in a bubble-tray of a gas/liquid contact column are provided with valves comprising valve bodies positioned above the openings and supported in the lowest position by the upper surface of the tray, each valve having a guide member consisting of flexible wire elements e.g. steel wire, which grip the valve body and project downwardly through the opening and the lower ends of which are provided with stops to limit the upward travel of the valve. As shown in Figs. 1 and 2, the valve body 1 has the edge 2 bent downward and is fitted with two steel springs 3 and 3<SP>1</SP>, identical in shape. These springs clamp round the valve body at the four recesses 6 and extend downward at the sides of the valve body forming guide parts 4, 4<SP>1</SP> and 411 the ends of which are bent back outwardly to form stops 5, 5<SP>1</SP>, 5<SP>11</SP> and 5<SP>111</SP> to limit the upward movement of the valve. The recesses 6 are formed by incisions in the periphery of the valve body 1, and the lugs formed may be bent downward to form stops by which means the valves rest on the tray surface. The valve may be inserted or withdrawn from the passage 9 by springing back the flexible wire members. The valve body may have an opening in the centre for fastening the ends of the elements not extended for guiding purposes. Exemplified are valves with guide members consisting of from one to four flexible wire elements. Specification 843,280 is referred to.
Patent GB-467508-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B60T15/54
Filed: 1935-12-17
Abstract: 467,508. Fluid-pressure brakes. SIMMONS, A. W., and WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. Dec. 17, 1935, No. 34995. [Class 103 (i)] A graduated release valve having a piston 2 subject to train pipe pressure in a chamber 3 and to the pressure of a control chamber 8 in chamber 6 is arranged so that the piston 2 moves to the left when train pipe pressure falls on brake application and thus varies the pressure in control chamber 6, 8 so that the position of the piston 2 is dependent on the extent of fall of train pipe pressure and the brake cylinder pressure at which release of fluid from the brake cylinder is cut off is dependent on this position. A chamber 17 is connected by port 21 to the triple valve exhaust part and past valve 15 seating on a piston 19 to an atmospheric port 24. A lever 10 connected to the piston 2 has a pin-and-slot connection 12, 13 with the valve 15 and when the piston 2 moves to the left on brake application, the pin 12 moves to the other end of the slot 13. When the brakes are released the piston 2 moves to the right and the triple valve connects the brake cylinder with the chamber 17. Brake cylinder pressure thereupon first closes the valve 15 and then moves the piston 19 away from the valve 15 to connect the brake cylinder to atmosphere. When brake cylinder pressure has fallen the piston 19 is moved back against the valve 15 by a spring 25. Further increase of train pipe pressure moves the piston 2 further to the right to reopen the valve 15 and the same action is repeated.