baber/WOPTO huggingface dataset:
Patent GB-851067-A (GB)
Title: Improvements in or relating to a method of obtaining powders of uniform size
Inventor: CHUFFART ROBERT CHARLES
IPC: B03B5/62
Filed: 1958-01-15
Abstract: A method of classifying powder of widely varying particle size into fractions having a limited particle size distribution consists of forming from the powder a fluidized suspension from which predetermined fractions having desired particle sizes may be withdrawn.  The suspension is formed in a vertical chamber through which a continuous upward flow is maintained of a liquid inert to, and of lower density than, the material to be separated. Below the suspension is a fluidized bed of particles having a greater resistance to the liquid flow than has the largest size of particle to be classified, by which means the liquid is caused to have a uniform velocity of flow over the cross-section of the chamber.  In order to further assist in obtaining uniformity of flow velocity the incoming liquid before reaching the fluidized bed may pass through a perforated plate in which the holes are outside the projection on to the plate of the narrow vertical feed pipe entering the base of the chamber, and then through a bed of spherical particles of a polished material of lower density than the liquid.  By arranging for a suitable flow of feed material and for removal of classified material the process may be operated continuously.  Preferred conditions for operation of the process and one suitable form of apparatus are described.
Patent GB-1467082-A (GB)
Title: Display device
IPC: G09F15/00
Filed: 1975-06-03
Abstract: 1467082 Display devices BEROL Ltd 3 June 1975 [13 Jan 1975] 1424/75 Heading G5C A display device 10 in the form of one or more prisms, parallelepipeds, or frusta of pyramids is constructed from planar cardboard members bearing display matter at least two of whose edges 14, 15 are clipped together by a plastics connector 13. End-pieces 19 may close the open ends of the shapes formed. Several of the prisms &c. may be joined together using the connectors as in Fig. 10.
Patent GB-1048201-A (GB)
Title: Improvements in ice buckets
IPC: A47G23/02
Filed: 1965-01-13
Abstract: 1,048,201. Ice buckets; artificial leaves. L. WELCH. Oct. 22, 1965 [Jan. 13, 1965], No. 1503/65. Headings A4A and A4X. An ice bucket simulating a pineapple divided horizontally into upper and lower shells, a removable glass ice-receiving bowl being fitted into the lower shell and the upper shell 11 (Fig. 1, not shown) forming a lid and housing a socket 12 in which the lowermost of nested artificial foliage units 14 (Fig. 2, not shown) is secured by adhesive. The edges of the shells have interfitting annular rib and shoulder or recess means and are registered by locating slot and complementary lug on the rib and shoulder. The plastic foliage units have telescopically engagable portions 15 each provided with a spacing lip or boss 19 and an aperture for passage of a securing bolt or of a nail 18 secured by pinching at 21. The nail may be of circular section the nail head 20 and the point being hidden by a cap and a plate 22.
Patent GB-1082603-A (GB)
Title: Improvements in carburettors for internal combustion engines, comprising an automaticdevice for starting and running the engine from cold
IPC: F02M1/10
Filed: 1965-01-13
Abstract: 1,082,603. Spray carburetters. SOC. INDUSTRIELLE DE BREVETS ET D' ETUDES S.I.B.E. Jan. 13, 1965 [Jan. 14, 1964], No. 1559./65. Heading F1B. A choke valve 6 is opened by a solenoid 13 the current through which is controlled by a thermistor 27 responsive to engine temperature. At cold starting the resistance of thermistor 27 is at a minimum so that solenoid 13 is sufficiently powerful to close choke valve 6 completely against its opening spring 19. When the engine starts the choke valve is opened slightly by a suction responsive device 15 and as engine temperature increases, the force of solenoid 13 is reduced by the increasing resistance of thermistor 27 to allow the choke valve to open. A cam 21 on the choke valve spindle controls the past idle position of the throttle valve 2. In a modification the solenoid 13 is supplied with current pulses by a pulse producing circuit, the valve 6 taking up a mean position depending upon the duration of the pulses which is controlled by the thermistor 27.
Patent GB-711641-A (GB)
Title: Attachments for tractors
IPC: B60P1/20
Filed: 1952-01-21
Abstract: 711,641. Couplings. McLEAN, J. March 13. 1953 [Jan. 21, 1952]. No. 1598/52. Class. 103(5) The stays 7 for the power lift links 10) on a tractor are pivoted to a block 4 slidable longitudinally of a guide way 3. secured to the tractor thus allowing the power lift mechanism to effect tipping of a trailer. To the drawbar 8 is fixed a U- member 13 which has pivoted to it at 15 a cross piece 17 and a rigid fork member 14 which is pivoted also to the block 4. The block 4 may be temporarily secured in the slide 3 by means of a pin passing through lugs 12 on the slide and aligned holes 6 in the block 4.
Patent GB-157907-A (GB)
Title: Improvements in processes for the manufacture of a mastic or binding substance from sulphite lye
IPC: C10L5/20
Filed: 1921-01-10
Abstract: An adhesive composition is made from waste sulphite cellulose lye by neutralizing the liquid with slaked lime, concentrating the filtrate until a sample sets on cooling, and then adding a heavy mineral oil in such quantity that a further sample remains liquid on cooling. The resulting liquid is of use as a binder in the manufacture of briquettes of coal and ore.  Specifications 20460/13 and 157,908, [both in Class 82 (i), Metals, Extracting &c.], are referred to.
Patent GB-727834-A (GB)
Title: Lifting apparatus for tiles, bricks, parcels or other articles
Inventor: BOUCHER JOHN WESTLEY
IPC: B66B9/10
Filed: 1953-01-20
Abstract: 727,834. Endless-chain conveyers. WILD & CO., Ltd., M. B. Jan. 15, 1954 (Jan. 20, 1953], No. 1609/53. Class 78 (1). An endless conveyer for raising bricks, tiles, parcels or other articles from one level to another comprises an endless chain g which is provided with pivotally mounted article-supporting members u and is supported by a hollow metal beam a having a pair of trunnions b detachably engaging bearings c on a structure d housing the conveyer driving unit i. Each carrier u comprises a rectangular plate which is pivoted to a plate w secured to the chain g and provided with flanges v<SP>1</SP> which, during the upper movement of the carrier, rest on flanges v<SP>1</SP> extending from two longitudinal guides v secured to the beam a. Each plate w is formed with flanges w<SP>1</SP> having metal pieces x which cooperate with the flanges v<SP>1</SP> to assist in supporting the carrier in its article-supporting position. After the carriers have left the guides v and passed round the upper conveyer sprocket h, they contact an abutment y and are pivoted so as to lie against the descending run of the chain g and then pass through the interior of the beam a. Adjacent the lower end of the beam they engage another abutment z by which they are turned to their article-supporting position and are retained in such position around the lower sprocket h and during the commencement of their next upward movement along the beam. The beam is formed at its lower end with a handle as by which it may be carried after being detached from the structure d. The conveyer chain is driven from the power unit c through a belt j, passing over pulleys k, and a reduction gear l, the latter being connected to the adjacent sprocket h through a disengageable coupling m. To transmit a drive to the chain g, the belt is tensioned by a roller non a spring-loaded lever o. The drive is interrupted by operating a hand lever r connected by a chain s to the lever o.
Patent GB-363182-A (GB)
Title: Improvements in shoulder pads for coats and like wearing apparel
IPC: A41D27/26
Filed: 1931-01-19
Abstract: 363,182. Shoulder pads for coats &c. GOODMAN, B., 135, Pinstone Street, Sheffield. Jan. 19, 1931, No. 1667. [Class 141.] A shoulder pad for coats and like wearing apparel comprises two leaf springs a, b, of metal, celluloid, or other resilient material of more or less arcuate formation, which are secured to a thickness of canvas or similar material c shaped to fit on the shoulder of the garment between the inner and outer material. The usual padding is dispensed with.
Patent GB-871235-A (GB)
Title: Novel substituted pyrrolidones and salts thereof and a process for the manufacture of same
IPC: C07D207/27
Filed: 1960-01-18
Abstract: The invention comprises aminoalkyl pyrrolidones of the formula: <FORM:0871235/IV (b)/1> wherein n is zero or a whole number from 1 to 5, R1 and R2 are each hydrogen or alkyl or together with the nitrogen atom form a 5- or 6-membered heterocyclic ring, the valencies shown as broken lines indicating that the alkyl groups are optional substituents, and acid addition salts thereof, and comprises also a process for preparing these compounds wherein a group of the formula -CH2-(CH2)n-NR1R2 is introduced into the nitrogen atom of a 4aryl-pyrrolidone-(2) or a 3- or 4-alkyl or a 3:4dialkyl derivative thereof either by reacting the alkali-metal salt of the pyrrolidone with an aminoalkyl halide R1R2N,(CH2)n,(CH2,Halogen or with a dihalide Halogen,CH2,(CH2)m, CH2,Halogen followed by reaction with an amine HNR1R2, m representing zero or an integer from 1 to 4; or, where a product wherein n is zero is to be made, by reacting the pyrrolidone and the amine HNR1R2 with formaldehyde or a formaldehyde-forming material, and if required converting the product of either of the above processes into a salt by treatment with an acid.  Preferably the aryl group in the products is a phenyl group and the alkyl groups are lower alkyl groups such as methyl, ethyl, propyl, butyl and amyl or, in the case where R1 and R2 are joined to form a ring, it may suitably be a piperidine, morpholine or pyrrolidine ring.  The compounds are used therapeutically as analgesic and antirheumatic agents, preferred compounds being 1-piperidinopropyl-4-phenyl-4-isopropyl and 1dimethylaminoethyl-4-phenyl-4-propylpyrrolidone-(2). 4-Aryl-pyrrolidone-(2)s used as starting materials such as 1-piperidinopropyl-3-methyl4-phenyl-4-isopropyl-pyrrolidone-(2) are made by reacting an aryl-acetonitrile, e.g. isopropylphenyl-acetonitrile, with an a -halo-alkanoic ester such as ethyl a -bromopropionate and reducing the resulting b -aryl-b -cyano-propionic ester.ALSO:Therapeutic preparations having analgesic and antirheumatic activity, for oral or parenteral administration, comprise a substituted pyrrolidone of the formula <FORM:0871235/VI/1> wherein n represents zero or a whole number from 1 to 5, R1 and R2 each represent hydrogen or alkyl or, together with the nitrogen atom, a 5-or 6-membered ring and the valencies shown as broken lines indicate that the alkyl groups are optional substituents, or an acid addition salt (e.g hydrohalide, sulphate, nitrate, citrate or tartrate) thereof (see Group IV (b)), together with a pharmaceutically acceptable carrier.
Patent GB-234052-A (GB)
Title: Improvement in or relating to measuring stereoscopes
IPC: G01C11/00
Filed: 1925-01-20
Abstract: 234,052. 'Brock & Weymouth, Inc., (Assignees of Holst, L. J. R.). May 13, 1924, [Convention date]. Stereogrammetric apparatus. - A measuring stereoscope for the examination of stereoscopic pairs of aerial photograph comprises two turntables 11, 12 upon which the diarpositives are supported and illuminated from beneath by lamps 16d regulated to provide even illumination by rheostats 22<a>, 22<b>. These turntables are mounted on a carriage 17 sliding transversely on guides 18<k> on a frame 18, itself moved longitudinally on guides 15<a> on a frame 16. The frames 17, 18 are actuated through gearing from the handles 17<g>, 18<g> respectively, and the turntables are independently rotated by handles 19, 20. The separation of the turntables 11, 12 is effected by the screw 11<e> operated from the handle 11<f>, the extent of the separation being indicated by the dial 23. The stereoscopic telescope 6 is supported from the frame 16 by a curved arm 13, and consists of two similar telescopes having eyepieces 2, 2<a>, and object glasses 5, 5<a>, between which are reflecting prisms, to direct the horizontal rays through the objectives vertically into the eyepieces. These parts of the telescope are adjustable by the screw 4 to adapt the instrument to suit the interpupillary distance of the observer. The diapositives are viewed through single reflecting prisms 7, 7<a>, 10, 10<a>, doubly reflecting prisms 8, 8<a>, and single reflecting prisms 10<b>, 10<c> mounted on the arm 13 above the turntables. Each eyepiece is fitted with cross lines at right-angles, one parallel to the vertical lines in the views. To enable the centre of the turntables to be adjusted to coincide with the optical axis a detachable ruler 29, Fig. 5, is provided and arranged to be located by stops 11<h>, 12h on the turntables. The central portion of the ruler comprises a glass plate with lines c, c<1>, etched upon it to. coincide with the centre of the turntable. The diapositives are supported from beneath by plungers 11<d>, 12<d> and held in place by flanges 11<c>, 12<c> engaging the upper surfaces so that both are in the same plane. Specification 229,276 is referred to.
Patent GB-643281-A (GB)
Title: Thermionic valve
IPC: H01J21/20
Filed: 1947-01-20
Abstract: 643,281. Thermionic valves. EITELMcCULLOUGH, Inc. Jan. 20, 1947, Nos. 1777, 1778 and 1779. Convention dates, Feb. 4, 1946, April 27, 1946, and May 29, 1946. [Class 39 (i)] A thermionic valve comprises a plurality of valve units, each with electrodes in an individual envelope, a rigid member tying the units together and providing an electrical connection between corresponding electrodes. In Fig. 5, each tube unit comprises an external anode 43, a screen grid 47 connected by an internal screening bracket 58 to a ring 57 forming part of the envelope, a control grid 46 connected by conductors 61 to a spider 73 and terminal 71 and a cathode 44 connected by leads 62 to conductor rings 77 and terminals 74. The anodes 43 of copper connected by flanges 52 to glass sections 54 are sealed by solder into recesses in a ring-shaped core 63 of copper provided with internal and external fins 67. A cup-shaped metal piece 69 embraces the units and insulatingly supports the control grid and cathode terminals. In another form (Fig. 3, not shown) the cooler is sectional and contains triode units. with the cooler fins transverse to the longitudinal axis of the valve units and forming a central passage for the cooling air. The fins may be separate and formed with integral flanges to make them interfitting. In another modification (Fig. 10, not shown), the connection for the screen grid extends inside and outside the valve units and forms an overall electrostatic shield between input and output members. The cooling fins are formed by a corrugated strip of metal. An annular cap covers the top ends of the valve units. Fig. 11 shows a water-cooled valve with triode units, the grid connection 118, 131 serving as the electrostatic screen between anode 103 and cathode 122. The water circulates in hollow annular jackets 147.
Patent GB-387114-A (GB)
Title: Multiple radio-telephony and radio-telegraphy
IPC: H04J7/02
Filed: 1932-01-22
Abstract: 387,114. Multiplex and duplex wire- 'less signalling. LOTH, W. A., 20, Avenue KlÚber, and GIVELET, A. J., 24, Rue Bois le Vent, both in Paris. Jan. 22, 1932, No. 2055. Convention date, Jan. 23, 1931. [Class 40 (v).] A system of multiplex radio signalling comprises two valve oscillators at a transmitting station, and two valve receivers at a receiving station, all with their plates or grids polarized from centre-tapped transformers or like potential-dividing devices supplied with synchronized supersonic alternating current. At any moment one oscillator and one receiver are active, the others inactive. Fig. 1 shows a transmitting station with the plates of the oscillator valves L, L<1> supplied from the synchronized source through a centre-tapped transformer T. Modulation is applied to the respective valves by microphones or other signal sources in the leads A, B. The valves L, L<1> are active alternately, and at the receiving station the valves are similarly arranged, being brought into action alternately at synchronous speed by applying the supersonic synchronizing wave to their plates or grids. For duplex working, one valve at each station may be a transmitting valve, the other a receiving valve. Each oscillator L, L<1> may comprise a pair of valves connected in push-pull, with the polarizing voltages from T applied at the middlepoints of the plate coils. Specifications 250,747 and 289,102, [both in Class 40 (v), Wireless signalling, &c.], are referred to. The Specification as open to inspection under Sect. 91 describes also a system of multiplex signalling in which a single short carrier wave is modulated by a number of different long waves each carrying its own signal modulation. The signals are separated at the receiver by tuned selective circuits after the first detecting stages. For secrecy, a single signal may be switched in sequence from one channel to another by means of cams or the like. A further system shown in Fig. 1 (Cancelled) comprises a stator 1 with the windings of alternate poles connected in series in two separate circuits, each including a microphone A, B. The rotor arm 2 carries a single winding 3 terminating at slip rings with brushes connected to a radio transmitter 6. The two microphone circuits thus act alternately at supersonic frequency on the transmitter; and a similar device splits up the detected signal at the receiver. The rotor coil may be connected in opposition with a second rotor coil rotating at equal speed between polepieces wound with coils to which no signal current is supplied. In a further modification, modulated carrier currents are supplied to the stator, which acts on the rotor by electrostatic induction. This subject-matter does not appear in the Specification as accepted.
Patent GB-746477-A (GB)
Title: A process for the production of steel
IPC: C22B1/14
Filed: 1953-01-23
Abstract: A process for producing steel comprises heating a mixture of ore and solid or liquid fuel to 800-1150 DEG C. to carbonise the fuel and partially or completely reduce the ore, and feeding the treated mixture to a Siemens-Martin furnace.  The fuel may be non-coking coal, coal sludge, brown coal, or lignite and ore and fuel may be briquetted.  When a geologically young coal is used it may be carbonised before briquetting.  The ore may be a fine grained ore, or a low quality ore e.g. flue dust, ore dust, roasted pyrite, or red mud.  The reduction may be carried out to produce sponge iron which may then be subjected to a dressing operation, e.g. magnetic separation.  The gases produced during reduction may be used to heat the Siemens-Martin furnace.
Patent GB-543289-A (GB)
Title: Improvements in the production of pig iron
IPC: C21C1/00
Filed: 1940-02-03
Abstract: 543,289. Producing pig iron; refining iron. AHLMANN, N. Feb. 3, 1940, No. 2167. [Class 72] In a process in which molten pig iron is treated or formed in a rotary kiln having a length substantially greater than the flame zone, the phosphoric content of the pig iron is raised by adding one or more phosphorus compounds to the charge and maintaining reducing conditions in the kiln so that the phosphorus compounds are reduced and absorbed by the molten iron. The reducing conditions are maintained by adding carbon to the charge or by controlling the combustion so that a reducing flame is produced. When the iron is being produced from iron ore the carbon reduces the ore as well as the phosphorus compounds, if scrap iron is being melted some of the carbon will be adsorbed by the scrap, and when molten iron is treated it is introduced as such into the furnace. The phosphorous compounds may be natural phosphates such as apalite, bones, phosphoric acid or the slag provided by the basic Bessemer process. The latter process may be made a cyclic one, the pig iron produced being treated by that process and the slag used in the rotary furnace. The charge in the furnace may also be constituted so that cement or hydraulic lime is produced simultaneously with the pig iron. In an example the charge introduceld per hour into the furnace comprised 1.17 tons of iron ore, 1.64 of cement raw meal, 0.73 of coke, 100 1b. of raw phosphate and 40 1b of manganese ore. the resultant pig iron containing 0.85 per cent of phosphorus and the cement being of normal composition, and in another example, the charge introduced comprised 0.70 tons of cast iron chips, 1.00 of raw cement meal, 0.40 of coke and 65 lbs. of raw phosphate, the pig iron containing 1.06 per cent. of phosphorus. Specification 542,632 is referred to.
Patent GB-1154323-A (GB)
Title: Improvements in and relating to Spot-Welding Electrodes
Inventor: FORD LESLIE ALBERT
IPC: B23K11/30
Filed: 1965-08-24
Abstract: 1,154,323. Making welding electrodes; welding by pressure; extruding. JOHNSON MATTREY & CO. Ltd. 22 Aug., 1966 [24 Aug., 1965; 18 Jan., 1966],Nos. 36291/65 and 2261/66. Headings B3A, B3P and B3R. A spot welding electrode includes a reinforcing member or members extending as an insert of continuous annular shape into the electrode, the member or members being formed of conductive material of greater strength and resistance to deformation than the electrode material. A copper-chromium electrode has force fitted therein a hollow cylindrical reinforcing insert 2, Fig. 1, of sintered tungsten particles impregnated with copper and such an electrode may be made by locating a billet of the copperchromium alloy, in the end of which has been force-fitted an insert, in the cylindrical chamber of a vertical back-extrusion press and driving a plunger into the billet to deform it and form the cavity 1A. The electrode is then machined. Instead of forming the cavity by back extrusion it may be drilled. The insert may be of tungsten, molybdenum, alloys of either or both of these or sintered tungsten and/or molybdenum particles. Modified inserts comprise a number of circular, arcuate or rectangular rods arranged on a circle and touching each other. The tube formed may taper. In a further modification a billet from which the electrode body is to be formed has a central projection and an annular recess about the projection to receive a tubular insert which is secured by swaging or peening the central projection and then machining the billet. The insert may have its inner periphery cut away at the working end or it may have a tapered bore. A silver or silver base alloy washer may be placed at the bototm of the recess to improve conduction or the surfaces of the insert and recess may be silver or silver base alloy coated.
Patent GB-662058-A (GB)
Title: Arrangement in pressure logs
IPC: G01P5/14
Filed: 1949-01-27
Abstract: 662,058. Pressure logs. SVENSKA ACKUMULATOR AKTIEBOLAGET JUNGNER. Jan. 27, 1949 [April 10, 1948]. No. 2305/49. Class 69 (i). A pressure log, of the type provided with a balancing beam 3 actuated through a rod 1 by a moment proportional to the speed of the parent vessel and restrained by a spring 10 carried by a transferring arm 7 the postion of which is varied by a cam 14 until balance is obtained, has the transferring arm formed as a single-armed lever. Variation in pressure causes rotation of the balancing arm 3 about the axle 4 and the contact lever 6 moves over the contacts 18a, b, c, d causing the motor 17 to run and rotate the cam 14 to move the transferring arm 7, which is mounted coaxially with the beam 3, until the tension in the spring returns the beam 3 to its neutral position. The motor moves a pointer 20 over a speed scale 21.