baber/WOPTO huggingface dataset:
Patent GB-276866-A (GB)
Title: Improvements in and relating to pavements
IPC: E01C7/18
Filed: 1926-03-06
Abstract: 276,866. Armstrong, J. J. V., (Janin, A.). March 6, 1926. Grant of Patent refused. Macadamized roads.-A surface layer of bituminous paving material as described and claimed in Specification 276,539, is placed on a prepared foundation to form a multi-laver bitumenized road with a non-slip surface. The surface layer is prepared from aggregate having a primary coat of volatile oil, such as paraffin, naphtha., or petrol, applied at atmospheric temperature and a secondary coat of bituminous cement, the volatile oil being gradually released through the film of bituminous cement. Aggregate of sand size may be added as a filler after the bituminous cement, and lime may be added at any stage of the coating process. The surface layer may be placed on one or more layers of partly or fully compacted bitumenized aggregate which may be prepared as described above, each layer being of finer gauge than the one beneath and interlocking therewith. The invention also includes a series of bituminous mixtures prepared as above from aggregate graded as to size for subsequent use in forming a road in compacted interlocking layers. Specifications 275,280 and 276,538 also are referred to.
Patent GB-411929-A (GB)
Title: Improvements in and relating to lamp shade supports
IPC: F21V17/16
Filed: 1933-10-25
Abstract: 411,929. Lampshade holders. CHIBA, K., 10, York Place, Strand, London. Oct. 25, 1933, No. 30016/32. [Class 75 (ii).] A lampshade support comprises a spider 11 attachable to the light source and provided with radially extending arms bent inwardly downwards at 12 and then substantially radially at 13, one or more of the arms having a fixed part and a separate outwardly spring-pressed movable part 12<a>. The part 12<a> is located by a projection pressed out of it and engaging in a slot formed by pressing down a part of the material of the fixed part of the arm, which acts as an abutment for the spiral spring. A flat leaf spring may be used. The spider arms may be stepped to engage shades of various sizes. The spider is carried by legs 9 attached to a ring 10 which is usually secured to the lamp-bulb holder. In the case of a hanging lamp the legs 9 may be radial or bent inwardly and upwardly so as to pass through the centre of the spider. The legs 9 are preferably springy and may be made adjustable in length by provision of threaded portions and nuts. When the support is used with a candlestick, a spring clip engages the latter or the candle. When the support is used with a gas burner, it may be integral with or secured to the burner.
Patent GB-876368-A (GB)
Title: Improvements in or relating to transistor circuits
Inventor: ANDREW ALEXANDER MILLER
IPC: H03K3/281
Filed: 1957-09-25
Abstract: 876,368. Transistor bistable and monostable circuits. INTERNATIONAL COMPUTERS & TABULATORS Ltd. Aug. 13, 1958 [Sept. 25, 1957], No. 30080/57. Class 40(6) In a circuit comprising two reciprocally coupled transistors forming either a bistable or a monostable circuit, the collector electrode of one transistor is connected to the base electrode of the other through a D.C. path comprising a non- linear resistor whose characteristics are such that it assumes large and small values of resistance when the second of the two transistors is in its relatively non-conducting or relatively conducting condition respectively. The non-linear resistor may comprise a semi-conductor diode 7 poled to conduct in the same direction as the emitter-base diode of the second transistor; alternatively symmetrical elements composed of materials having non-linear voltage-current relationships may be used. Fig. 1 illustrates a bistable circuit in which transistor Tr1 is triggered from its conducting to its non-conducting condition by the application of a negative triggering pulse to its emitter electrode derived from a winding upon a magnetic core 9. The circuit may be restored to its original condition by the application of a positive triggering pulse derived from the core 9; preferably however an alternative source of reset pulses is provided. The transistor Tr2 is a power transistor and as a consequence requires a large base current when it is conducting; under these conditions the diode 7 has a low impedance and is able to supply the large current required. Fig. 3 shows a monostable circuit suitable for use with an inductive load Tr2. On the application of a negative triggering pulse from the core 9, the transistor Tr2 conducts so feeding back a pulse to the base of transistor Trl through the capacitor 15 to cut this transistor off and also charging the capacitor 14 through the resistor 11. At the end of the triggering pulse when the transistor Tr2 ceases to conduct and the transistor Tr1 commences conducting once more, the capacitor 14 discharges through the load RL and the transistor Tr1 so developing an output voltage across the load impedance having a duration which may exceed by many times the length of the triggering pulses supplied from the core 9. In both these circuits emitter current flows through the winding upon the core 9; Fig. 2 (not shown) shows an alternative circuit in which the winding is coupled to the base electrode of the transistor Tr1 through a blocking capacitor, feedback from the transistor Tr2 to the transistor Trl being provided by means of a common emitter resistor.
Patent GB-1320775-A (GB)
Title: Nickel base alloys
IPC: C22F1/10
Filed: 1970-06-22
Abstract: 1320775 Nickel base alloy CABOT CORP 22 June 1970 [20 June 1969] 30108/70 Heading C7A Nickel base alloy comprises: the balance, apart from impurities, such as:- being Ni and a microstructure containing a Ni 3  (Nb, Ta, V) phase and a (Nb, Ta, V)C phase the latter phase being dispersed as fine particles less than 250A in size and co-precipitated with the former phase in addition to primary (Nb, Ta, V)C particles no greater than 5Á in size. The microstructure may be provided by solution treating the alloy at 2250-2300‹F., quenching it, cold working, solution treating at 2250-2300‹F., quenching and ageing at 1100- 1450‹F. The cold working, solution treating and quenching steps may be repeated one or more times prior to the ageing step.
Patent GB-804893-A (GB)
Title: Glass compositions
IPC: C03C3/105
Filed: 1956-10-03
Abstract: 804,893. Glass. PITTSBURGH PLATE GLASS CO. Oct. 3, 1956 [Oct. 4, 1955], No. 30114/56. Class 56. Glass, particularly for the major segment of a multifocal lens, has the following composition in weight per cent. :- the sum of K 2 O + TiO 2  + Al 2 O 3  being 3-16, and preferably has a softening point below 1250‹F., a refractive index between 1À520 and 1À540, a reciprocal dispersion of 48 to 55 and a coefficient of expansion of approximately 7À0 to 10À0 x 10<SP>-6</SP> per 0‹C. between 25‹C. and 300‹C. Small amounts of fining agents, such as arsenic, or antimony pentoxide up to 2 per cent. by weight, melting aids or colorants, and up to 1 per cent. by weight of fluorine to lower the softening point may be added.
Patent GB-486590-A (GB)
Title: Improvements in frangible bulbs for use in apparatus for extinguishing or isolating fires
IPC: A62C8/00
Filed: 1936-11-05
Abstract: 486,590. Tempering glass. MATHER & PLATT, Ltd., and ROBERTS, A. Nov. 5, 1936, No. 30116. [Class 56] [Also in Group XXI] Relates to apparatus for extinguishing or isolating fires in which a valve is normally kept closed by a sealed glass bulb, filled with liquid, which bursts at a prearranged temperature. According to the present invention, the bulb is made of tempered glass in order to ensure complete shattering when fracture of the glass takes place. The bulb may be made of borosilicate glass and it is tempered by chilling it, when red hot, in oil at a temperature of 250‹ C.
Patent GB-1042544-A (GB)
Title: A proportioning valve for hydraulic brake system
IPC: B60T8/26
Filed: 1965-07-15
Abstract: 1,042,544. Fluid pressure brakes; valves. KELSEY-HAYES CO. July 15, 1965 [July 31, 1964], No. 30122/65. Headings F2F and F2V. In a proportioning valve for an hydraulic braking system adapted to be provided in the hydraulic connection between the master cylinder and the rear wheel brake cylinders for maintaining differential pressures in the front and rear wheel cylinders during a portion of the braking operation, a cylinder is formed in the casing of the proportioning valve having aligned small (23) and large (24) bores, a stepped piston having a small head 25 and a larger head 26 mounted for axial movement in the bores, a space 43 in the casing intermediate the heads and connected to the inlet connection to the master cylinder, a chamber 47 at the end of the larger diameter bore opposite to the space 43, the chamber 47 being connected to the outlet 22 leading to the rear wheel brake cylinders, a passage 45 connecting the space 43 to the chamber 47, a valve member formed by a valve seal member 40 being secured to the piston intermediate the heads to close the passage 45 between the space 43 and the chamber 47 upon movement of the piston in one direction, the end of the small head 25 being exposed to atmospheric pressure via passages 34 and 33 in the disc plates 30, 29 respectively, and spring means 27, 28 normally biasing the piston to a position wherein the valve member is open to permit the flow of pressure fluid from the inlet to the outlet. When the piston 25, 26 is moved to the left against the action of the springs 27, 28, the valve member 40 cuts off communication between the inlet 21 and the outlet 22. When the valve 40 is in its open position shown in Fig. 2, fluid pressure may enter the inlet of 21, flow through passage 44 to the chamber 43, thence through the passage 42 and passage 45 to the chambers 46 and 47 and through radial passages 48 to the outlet 22 leading to the rear wheel brake cylinders. When the valve member 40 engages the bore 23 of the smaller cylinder this communication is cut off. The passage of fluid from the chamber 47 to the chamber 43 is prevented by means of an annular cup-like sealing washer 50 having a flexible lip 51 engaging the bore 24 of the larger cylinder. If the pressure in chamber 47 exceeds that in the annular chamber 43 fluid may flow from right to left past the flexible lip 51 into the annular space 43 and back to the master cylinder. The cup-like sealing washer 50 prevents the flow of fluid from the annular space 43 to the chamber 47 and acts as a check valve. A stop 60 may be provided in the tubular extension 20a to limit movement of the piston towards the left.
Patent GB-1186645-A (GB)
Title: Linear Motion Potentiometer
IPC: H01C10/40
Filed: 1968-06-25
Abstract: 1,186,645. Linear motion potentiometer. STACKPOLE CARBON CO. 25 June, 1968 [15 Aug., 1967], .No. 30130/68. Heading HIS. An elongated housing has a slot along one long face in which a slider, carrying a bridging contact, is constrained to travel when a knob, mounted thereon by means of a pin, is rotated so that gear teeth on the knob engage similar teeth on the housing, the bridging contact engaging resistive and collector strips inside the housing. As shown, two moulded plastics sections are secured by adhesive to form a housing 1 having in one face a slot 3 and a recess with gear -teeth 17 formed along one side. A metal collector strip 9 and resistance strip 10 are :bridged by a coil spring 8 mounted on post 7 depending from a slider 5 with a flange 6 bearing on the underside of the top of the casing. A knob 15, snapped on to a headed slit-pin projecting upwardly .from the slider 5, bears on the top of the casing-to locate the slider and has teeth 16 engaging the teeth 17. In another embodiment the slide is retained in its slot by flanges inside and outside the top of the casing. In a further embodiment the gear teeth on the knob engage teeth in a slot of a separate panel. Two potentiometers may be -mounted side by side in this way.
Patent GB-925790-A (GB)
Title: Purification of kanamycin a
Filed: 1959-09-03
Abstract: Kanamycin is separated from a mixture comprising kanamycin A and kanamycin B by feeding the mixture to a column containing a porous, strongly basic, anion exchange resin on the hydroxyl cycle and removing the kanamycin A separate from kanamycin B from the column with an eluting solvent consisting of water or an aqueous solution of an organic solvent.  It is preferred to use a purified kanamycin mixture and solutions containing 5 to 50% solids and the equivalent of 1g of kanamycin per 50 ml resin. Aqueous solutions of water-miscible organic solvents, e.g. alcohols or ketones may be used, especially 5% aqueous methanol. The fractions from which the kanamycin A is recovered are selected by reference to the measurement of (a) the resistivity of the eluate or (b) the refractive index of the eluate.  The resin may be of the quaternary amine type. Specification 817,385 is referred to.
Patent GB-1321109-A (GB)
Title: Electrolytic diaphragm cell
IPC: C25B9/19
Filed: 1970-06-23
Abstract: 1321109 Bipolar, diaphragm, electrolytic cells PPG INDUSTRIES INC 23 June 1970 [ 24 June 1969] 30301/70 Heading C7B A bipolar diaphragm cell for the production of chlorine and alkali metal hydroxide by electrolysis of alkali metal chloride solution comprises a plurality of individual cells formed between adjacent bipolar electrodes; each individual cell including anode means comprising a plurality of elongated finger-like anodes formed by a pair of spaced vertical walls 61,62 extending outwardly from an electrode support plate 22, and cathode means comprising pervious, elongated finger-like cathodes 46 extending outwardly from an electrode support plate 47 and covered with diaphragm means, e.g. asbestos or a permionic membrane. Various forms of electrical connecting means are described such as the screw means 54 whereby an anode finger on one side of the bipolar electrode may be electrically connected to a cathode finger on the other side thereof. The cathode may be of wire screening, e.g. of steel, nickel or chromium. The anode may be of foraminous or louvred sheet material, or expanded metal mesh; e.g. of pervious titanium plate coated with platinum (or platinum oxide) on the side remote from the cathode; the side adjacent the cathode forming a passivating titanium oxide layer.
Patent GB-409740-A (GB)
Title: Improvements relating to variable electric resistances or potentiometers
IPC: H01C10/00
Filed: 1932-10-28
Abstract: 409,740. Resistance coatings and deposits; variable resistances. STEATITMAGNESIA AKT.-GES., 8, Florastrasse, Pankow, Berlin. Oct. 28, 1932, No. 30341. Convention date, May 12. [Class 37.] In a variable resistance or potentiometer in which a slider passes over a layer of resistance material, the resistance layer is of highly-burned hard or colloid carbon the surface of which is smoother during or after its production either over the whole surface or over the portion on which the slider makes contact. The surface may be smoothed by simply brushing or polishing or by subjecting it to high pressure, as by means of a press stamp. In this case the resistance may consist either of a layer applied to or precipitated on to a stiff or flexible insulating support, or wholly of resistance material. A resistance layer of highly-burned hard carbon may be prepared by precipitating vaporized carbon at a temperature of about 900‹ C. on to a heated ceramic carrier, which is then allowed to cool. A colloid carbon resistance may be produced by suspending carbon in the finest (colloidal) state of subdivision in an organic material such as artificial resin capable of being hardened, and applying to a carrier. By subsequent heat treatment, the organic material is either carbonized or hardened. In the construction shown, the resistance material is deposited as a layer on a fiat insulating member 2 in the form of a slotted ring fixed in an insulating casing 1. Connection is made by means of contacts 3. The movable contact consists of a slider 5 mounted on a spindle 11, contact with a soldering tag 4 being produced through a spring ring 8 bearing against the fixing bush, and a ring 6 to which the tag is attached. Specifications 236,975 and 240,890, [both in Class 37], are referred to.
Patent GB-742537-A (GB)
Title: Improvements in and relating to the separation and/or recovery of fat and/or fat-like material from organic substances containing it or them in cellular or similar systems
Inventor: CHAYEN ISRAEL HARRIS
IPC: C11B1/06
Filed: 1952-12-02
Abstract: Fats, fatty oils, ester waxes and other fat-like substances are extracted from materials containing them by subjecting the material, without reduction to cell size, to a high speed series of repeated intense impacts delivered through the medium of a liquid in which at least some of the non-fatty portion of the raw material is less soluble than in water, to produce a mixture of fat and readily separable residues, and separating the latter to leave the liquid containing the removed fat &c.  The process is preferably carried out in a hammer mill.  The raw material may comprise bones, soft animal material, and vegetable material, particularly palm kernel nuts, cotton seeds, copra, soya beans, cocoa bean, peanuts, castor seed and linseed.  The liquid medium may comprise the same fatty material as is being extracted, an aqueous solution of a solute such as a salt or an organic liquid in which the fat is soluble or insoluble.  Liquids specified comprise cottonseed oil; aqueous solutions of alkali metal chlorides or sulphates, alkaline earth chlorides, and aqueous solutions of weak acids, tannins, alcohols, ethers and dioxane; hydrocarbons such as hexane, or other petroleum fractions, and benzene, halogenated hydrocarbons such as trichlorethylene and carbon tetrachloride, alcohols such as isopropyl alcohol, glycols, acetals, esters, ethers, furanes, ketones and dioxane. The material is preferably subjected to the impacts for not more than 10 seconds. The fat may be separated from the liquid by usual methods or if dissolved therein, by evaporating off the solvent.  Specifications 722,311 and 741,422 are referred to.
Patent GB-901502-A (GB)
Title: A slide-rule for calculations involving protective screens and radioactive sources
Inventor: LAVIE JEAN
IPC: A61B6/10
Filed: 1959-09-08
Abstract: 901,502. Slide-rules. COMMISSARIAT A L'ENERGIE ATOMIQUE. Sept. 8, 1959 [Sept. 9, 1958 ; May 20, 1959], No. 30571/59. Class 106 (1). A slide rule for use in making calculations relating to protective screens and radioactive sources comprises a rule bearing on one side, 1 a family of curves 2 representing a function γ 1 = f(E, x)=k.E.B. Áa.e<SP>-Áx</SP> where k is a numerical coefficient, E represents the energy of the photons, B is the " build-up " factor and Á a  and Á are the coefficients of linear absorption of air and the screen material respectively, γ 1  being represented logarithmically along the rule, x (the thickness of the screen) being read off on a linear scale 3 marked on a cursor 5, and each curve corresponding to one chosen value of E, the other side of the rule, Fig. 2, bearing a logarithmic scale 13 of the radiation intensity R and a slide 7 on which is marked a family of curves 8 drawn on logarithmic co-ordinates to represent r<SP>2</SP>/A, where r is the distance from the source to the operator, and A is the activity of the source, each curve corresponding to a chosen value of A and the value r<SP>2</SP>/A being plotted along the slide and r being read on a scale 10 on the reverse side of the cursor 5. The cursor in effect transfers the value of the function γ 1  to the reverse side so that the equation R=k.E.B. Áa.e<SP>-Áx</SP>/(r<SP>2</SP>/A) may be solved when four of the five variables R, E, x, r and A are known. The scales 3 and 10 are drawn for lead as the screening material, but corresponding scales 6 and 11 may be provided for uranium. Other families of curves drawn on the reverse side of the slide 7 together with a scale 18 at one end of the rule enable thicknesses of other screening materials to be converted into the equivalent thicknesses of lead. Still further families of curves on the rear of the slide used with a mean free path scale 17 on the rule, enable a correction factor to be obtained for plane, circular and linear (non- point) sources. For this purpose also, curves 21 are used with an energy scale 16 on the cursor to ascertain screen thickness in terms of mean free path. The corrected value of the radiation intensity may be found using longarith. mic scales 19 and 20 on the rule and cursor respectively.
Patent GB-674342-A (GB)
Title: Improvements in or relating to television apparatus
IPC: H01J31/24
Filed: 1949-11-30
Abstract: 674,342. Television; light-valves. GES. ZUR FORDERUNG DER FORSCHUNG AU DER EIDGENOSSISCHEN TECHNISCHEN HOCHSCHULE. Nov. 30, 1949 [Nov. 30, 1948], No. 30790/49. Drawings to Specification. Class 40 (iii). In an arrangement for reproducing television pictures in which the deformations produced in a control layer when scanned by a picturesignal-modulated cathode-ray beam are employed to modulate a light source in a dark-field illumination arrangement of slits and bars, as described in Specifications 543,485 and 548,643, the width of the bars is made greater than the width of the image of a slit produced on the bars in order to overcome difficulties due to defects in the optical system and in the control layer. With this arrangement, there is no longer a linear relationship between the light passing the bars and the amplitude of the control layer deformations and to compensate for this a non-linear video-signal amplifier is used.
Patent GB-1110136-A (GB)
Title: A method and a device for twisting a warp band doffed from a beaming creel and to be wound on a warping frame
IPC: D02H3/00
Filed: 1965-07-20
Abstract: 1,110,136. Warping. MASCHINENFABRIK BENNINGER A.G. 20 July, 1965 [22 July, 1964], No. 30856/65. Heading DIM. In order to wind a warp having a symmetrical pattern with one set-up of the creel, the yarns for half the pattern are drawn through a vertical reed 18 and then through horizontal reeds 5, 7. To wind the other half of the pattern, the reeds 5, 7 and tease rods 6 are turned through 180, thereby reversing the order of the yarns.
Patent GB-339412-A (GB)
Title: Improvements in or relating to the manufacture of shoes and the like
IPC: A43D15/00
Filed: 1929-10-11
Abstract: 339,412. Pullum, E. V., and Metcalfe, H. R. Oct. 11, 1929. Lasting, methods of; shank stiffeners.-In the manufacture of shoes, particularly those having adhesively-attached soles, the edges of a tape or tapes 14, sewn to the edge of the upper, are secured by pushing them over spikes 4 carried by, and preferably struck from, a metal or other plate 1 arranged at the waist portion of the shoe. The plate is also furnished with tangs 8, 9 round which the ends of a draw string 11 carried by the tape are drawn, the tangs being afterwards hammered down. The plate 1 may be secured by rivets, &c. to a backing of cardboard &c., and mav extend into the heel and the sole portion of the shoe. An insole 18 may be provided, in which case the plate 1 is positioned on the insole.
Patent GB-691558-A (GB)
Title: Improvements in or relating to television receivers
Inventor: LAWSON WILLIAM
IPC: H04N5/64
Filed: 1950-12-20
Abstract: 691,558. Television receivers. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Dec. 4, 1951 [Dec. 20, 1950], No. 30982/50. Class 40 (iii). Controls 16-18 which require only occasional adjustment are mounted at the rear of a television receiver cabinet in a plane which makes an angle of approximately 120 degrees with the side 1 so as to be accessible whilst viewing the cathode-ray tube screen at the front of the cabinet.