baber/WOPTO huggingface dataset:
Patent GB-805464-A (GB)
Title: Improvements in or relating to switches and to circuits for generating sawtooth currents
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: H03K4/32
Filed: 1954-11-19
Abstract: 805,464. Discharge apparatus. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 4, 1955 [Nov. 19, 1954], No. 33516/54. Class 39(1). [Also in Group XL[c]] A bidirectionally conducting electronic switch comprises a valve 1, Fig. 2, having means for generating electrons, a control electrode and two further electrodes, 5, 6 one of which is a secondary electron emitting electrode, these electrodes 5, 6 being arranged to receive electrons from the generating means, and an inductance 7a connecting the secondary electron emitting electrode 5 to a source of potential and a further inductance 7b coupled to the inductance 7a and connected to the other electrode 6, the arrangement being such that when electrons flow from the generating means to the electrodes 5, 6 current can flow into or out of the electrode 5, the direction of current flow being dependent on the relative potentials of these electrodes. Both electrodes 5, 6 may be secondary emitting. In a modified form, Fig. 3, the valve is provided with secondary electron collectors 5a, the collector 5a feeding secondary electrons collect from the electrode 6 to the electrode 5 and the electrode 6a collecting secondary electrons emitted from the electrode 5 and feeding them to the electrode 6.
Patent GB-489084-A (GB)
Title: Improvements in or relating to inside-lined light-metal engine cylinders and methodsof making the same
IPC: B22D13/00
Filed: 1937-12-04
Abstract: 489,084. Casting composite cylinders. FICHTEL & SACHS AKT.-GES. Dec. 4, 1937, No. 33634. Convention date, Dec. 5, 1936. [Class 83 (i)] Casting-machines; moulds; cores.-An aluminium alloy, or other light metal cylinder 3 is lined by casting in a hard metal such as iron, steel or a hard aluminium alloy. This may be done by centrifugal casting, the axis being horizontal or vertical, a core 4 being used in this case or the core may be used without rotation. The cylinder is clamped to a table 2 which may be recessed to centre the core 4 and this has a central runner 5 and ducts 8 and is preferably formed of sand or in segments of another heat-resisting material. The core may be made long to increase the casting head and preferably extends over the cylinder end to form an anchoring flange 7. The cylinder may be hot so that it is superficially fused by the cast metal and it may be enclosed in a metal mould (not shown). Specifications 464,777, 471,517, and 471,564 are referred to.
Patent GB-1057804-A (GB)
Title: A process for the manufacture of antibiotic substances
Filed: 1963-08-26
Abstract: Antibiotic substances having oncostatic or oncolytic activity, which inhibit penicillin- and tetracycline-resistant Staphylococcus aureus, Mycobacterium smegmatis, B. subtilis and S. lutea, which slightly inhibit Candida albicans and E. coli but do not inhibit Sac. cervisiae, Ps. aeruginosa and A. aerogenes, are obtained by cultivating strain ATCC 14760, ATCC 14761 or ATCC 14762 of Streptomyces refuineus var. thermotolerans in a previously sterilized aqueous nutrient medium containing sources of assimilable carbon, nitrogen and mineral elements. The antibiotic substances may be isolated by the addition of ammonium sulphate to a clarified broth or to the partial thaw fractions of the clarified broth.  A solution of the above antibiotics in physiological saline solution may be used to treat tumours in animals and man.
Patent GB-639241-A (GB)
Title: An improved telegraphic printing system
IPC: H04L21/04
Filed: 1947-12-20
Abstract: 639,241. Type - printing telegraphy. GRETENER, E. Dec. 20, 1947, No. 33712. Convention date, May 2, 1946. [Class 40 (iii)] A type-printing receiver operating to an equal-length, equal-unit code comprises a typewheel rotating synchronously with a transmitter and having type-faces bearing elemental signs from which characters may be build-up and arranged for movement parallel to the axis of the type-wheel, the signs required to form a character being impressed in sequence in their correct position during one revolution of the type-wheel. Any character can be formed by selected ones of fourteen elemental signs, each character being represented by a fourteen-unit code in which no-current elements represent the signs to be printed and current elements represent the signs not required for the particular character. At the transmitter 10 a selected character cam 11 rotates and its notches 51 open transmitting contacts 13 at times characteristic of the signs required to compose the selected character. At the receiver 14 a shaft 48 driven synchronously with the transmitter bears a printing wheel 25 and an armature wheel 47 and drives a type-wheel 15. As each type-face 17 comes opposite the head 22 of a printing hammer 20 a corresponding notch 26 on the printing wheel 25 allows the printing hammer 20 to rotate about its pivot 21 under the action of a spring 49. If a current element is being received the armature 36 is attracted and latches a lever 29 thus preventing rotation of the printing hammer 20. If, however, a no-current element is being received the armature 36 releases, its projection 45 entering a notch 46 in the armature wheel, and allows the printing hammer 20 to strike the appropriate type 17. The inked type, which is loosely mounted in an oil-impregnated, sintered metal bearing, strikes a stationary tape 18 backed by a resilient roller 19 and rebounds sharply, aided by a return spring 81. During the last part of its forward traverse the type travels freely, the printing hammer 20 being arrested by a fixed stop 28, and printing can thus take place although the type-wheel 15 is rotating. The armature 36 and printing hammer 20 are restored to normal by the sloping faces of the notches 46 and 26 respectively and at the end of a revolution of the type-wheel 15 the tape 18 is stepped on ready for a following character.
Patent GB-447690-A (GB)
Title: Manufacture of aliphatic anhydrides and aldehydes
IPC: C07C51/56
Filed: 1934-11-24
Abstract: Aliphatic anhydrides and aldehydes are produced by thermally decomposing the vapour of alkylidene diesters diluted with inert gas or vapour such as carbon dioxide, methane, nitrogen, benzene or other hydrocarbon or the acid or anhydride corresponding with the ester. The quantity of the diluent may be 25--75 per cent of the volume of the vapour mixture.  The pressure may be reduced, atmospheric, or increased, and catalysts or filling-materials may be placed in the reaction chamber, such as phosphoric acid, acid phosphates, acid sulphates, pyrophosphates and pyrosulphates, especially of the alkali metals.  In an example, equal volumes of ethylidene diacetate vapour and carbon dioxide are passed over phosphoric acid on pumice at 350--360 DEG  C.  Ethylidene dipropionate and dibutyrate, and propylidene and butylidene diacetates are also mentioned as initial materials.
Patent GB-951973-A (GB)
Title: Improvements in or relating to record cards
IPC: G03B17/26
Filed: 1961-09-21
Abstract: 951,973. Mounting pictures &c. EASTMAN KODAK CO. Sept. 21, 1961 [Sept. 23, 1960], No. 33846/61. Heading A4X. A record card 10 has an aperture 12 framed by metal foil 16 coated on both faces with adhesive, the coating on the exposed face being heat-activated adhesive and a piece of film 22 is placed over the aperture and in contact with the adhesive while an alternating current electromagnetic field is induced across the frame 16 to inductively heat it and activate the adhesive to bond the film to frame 16. In a modification, Fig. 2, the foil frame 27 extends beyond the aperture edges and is only adhesively coated on one side, a film 25 smaller than the aperture being bonded to the foil.
Patent GB-174579-A (GB)
Title: Improvements in pencil cases
IPC: B43K21/08
Filed: 1921-12-16
Abstract: 174,579. Lefortier, R. G. Jan. 28, 1921, [Convention date]. Pencil holders. - In a pencil holder of the type in which the lead is fed forward by the operation of a screwthreaded rod, the rod works in a nut carried by one end of a tubular body, on which a sheath enclosing the rod is slidably mounted. The body 1 is longitudinally bored to receive the lead, and in the end thereof is screwed an internally screws-threaded sleeve 3 in which works the rod 4 carrying the lead 2. The rearend of the rod! 4 is secured to a part 6 lying against the base of a sheath 7, Fig. 1, and rotatable relatively thereto. The sheath is slidable on the body 1 and is provided with a slot 15 engaging a pin 10 on the sleeve 3. To feed the lead forward, tht sleeve 3 is slightly unscrewed from the bodv 1 and the rod 4 rotated to screw into the sleeve. In the modification shown in Fig. 2, the sheath 7 is formed as a series of cvlindrical or conical telescopic sections 7a - - - 7f, the first section being secured to the sleeve 3 and the last to the part 6. The rear end of the rod 4 is bent to form a hook 8 to serve for attaching to the pocket or to prevent rolling.
Patent GB-447497-A (GB)
Title: Improvements in or relating to electrical resistances and resistance materials
IPC: H01B1/18
Filed: 1934-11-26
Abstract: 447,497. Resistances. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Assignees of Bloomenthal, S. ; 41, W. Walnut Avenue, Merchantville, New Jersey, U.S.A.) Nov. 26, 1934, No. 34009. Convention date, Nov. 25, 1933. [Class 37] Resistances, particularly for use in wireless receiving sets, are made by mixing a mass of inert material particles, such as ground glass or finely powdered asbestos, with a solution of a polymerizable resin in a volatile solvent so as to coat said particles, and then mixing the product with a colloidal suspension of carbonaceous material, such as graphite or gas-carbon, and finally precipitating the carbonaceous material on to the surfaces of the coated particles. The product is then dried, moulded into the required shape under pressure, and finally baked at a temperature sufficient to polymerize the resin. In order to precipitate the carbon on to the particles, a coagulating agent such as hydrochloric acid may be added, or furfural or an organic acid, such as acetic, malic, citric or tartaric acid, may be added to the solution of the resin. In an example, a mixture of ground glass and air-floated asbestos is mixed in a kneader with a solution of phenol formaldehyde resin in acetone until most of the acetone has evaporated. The mixture is then crumbled, allowed to stand until the rest of the acetone has evaporated, ground and then mixed with a colloidal suspension of graphite in water. After the carbon has precipitated on to the filler particles, the solution is drained or filtered and the resulting cake is dried, crumbled and moulded into rods under a pressure of ten tons per square inch. The rods are finally baked at 170‹ C. for an hour. Terminals are then applied by spraying a ring of copper or tin on the ends of the rod, and the rods are immersed in a moisture-repelling impregnating material, such as a halogenated hydrocarbon, paraffin, linseed oil or carnauba wax.
Patent GB-1177338-A (GB)
Title: Novel Benzothiophen Compounds, Compositions containing them and processes for their manufacture
Inventor: MARSHALL PHILIP GUY
IPC: C07D333/56
Filed: 1966-03-03
Abstract: 1,177,338. Benzo[b]thiophen derivatives. ASPRO-NICHOLAS Ltd. 3 March, 1967 [3 March, 1966 (5); 30 Jan., 1967 (2)], Nos. 34010/69, 34011/69, 34012/69, 34013/69, 34014/69, 34015/69 and 34016/69. Divided out of 1,174,411. Heading C2C. [Also in Division C4] Novel compounds I (including salts thereof) wherein B is an unsubstituted or substituted benzo ring (substituents include, e.g. OH, CN, NO 2 , amino, CF 3 , halogen, alkoxy, alkenyloxy, alkynyloxy, acyl and alkyl, alkenyl and alkynyl optionally substituted by OH, alkoxy, aryl or halogen), Y is H, alkyl, acyl or the group Z and Z signifies CH 2 NR<SP>1</SP>R<SP>2</SP> wherein R<SP>1</SP> is H or alkyl (may be unsaturated by one or more double or triple bonds and may be substituted by OH, SH, halogen or aryl) and R 2  is an ethylene or propylene chain (these may be substituted by alkyl) terminated by OH or halogen, provided that when the benzothiophen portion of the molecule is substituted in the 3-position only, by CH 2 NR<SP>1</SP>R<SP>2</SP> wherein R<SP>2</SP> is 2-hydroxy-, -bromo- or -iodo-ethyl, then R<SP>1</SP> is not ethyl and when R<SP>2</SP> is 2-chloroethyl then R<SP>1</SP> is not methyl or ethyl, are obtained by reacting a compound V, wherein R<SP>4</SP> is H, alkyl or acyl or is the group R<SP>3</SP> and R<SP>3</SP> signifies CH 2  Halogen, with an amine, NHR<SP>1</SP>R<SP>2</SP>, or by reacting a compound XVI wherein R<SP>6</SP> is H, alkyl, acyl or the group R<SP>5</SP> and R<SP>6</SP> signifies CH 2 NHR<SP>1</SP> with a compound of the formula BrcH 2 (CH 2 ) n CH 2 F wherein n is 0 or 1; compounds I containing ethylene or propylene chains terminated by halogen may be obtained from the hydroxy terminated compounds by standard methods. 5 - (Bromo - 3 - (N - ethylaminomethyl) - benzo[b)-thiophen is prepared by the interaction of 5-bromo-3- bromomethylbenzo[b] - thiophen and ethylamine.
Patent GB-521610-A (GB)
Title: Improvements in or relating to the manufacture of centrifugal castings
IPC: B22D13/10
Filed: 1938-11-23
Abstract: 521,610. Casting-machines. DEUTSCHE EISENWERKE AKT.-GES. Nov. 23, 1938, No. 34019. Convention date, Feb. 3. Addition to 521,279. [Class 83 (i)] Coating moulds; mould materials.-In lining centrifugal moulds for casting iron or steel pipes &c. as in the parent Specification, the coherence of at least the innermost layer of the granular material is increased, so that somewhat lower speeds of rotation may be employed, by imbedding or adding granular substances of greater density, such as iron ores or barytes, or adding a small proportion of a binder, such as boric acid, which will not generate gas or render the lining impervious to gas. The binder may be mixed with the innermost layer only or be applied to it subsequently. Cohesion may be increased by pressure of profiled rolls &c. introducing the material into the mould in a heated condition or applying internal heat to sinter it. The materials may be introduced by a long casting gutter and if desired by gas pressure. In modifications a facing of fine graphite, aluminium powder, aluminium oxide, magnesia, &c, alone or with a dry or liquid binder such as water-glass, boric acid, oleaginous binding material &c. may be applied. A wire fabric or netting may also be arranged in or on the inner face of the lining.
Patent GB-605167-A (GB)
Title: Improvements relating to centrifugal spinning, twisting, and analogous machines
IPC: D01H1/08
Filed: 1945-12-17
Abstract: 605,167. Centrifugal spinning and twisting apparatus. PRINCE-SMITH & STELLS, Ltd., and FEATHER, E. E. Dec. 17, 1945, No. 34108. [Class 20(ii)] Centrifugal spinning and twisting machines of the kind in which yarn spun or twisted into an inverted centrifugal container is unwound on to a bobbin supported by a stationary spindle, have a resilient means provided on each spindle to contact the lower ends of an opposed traversing yarn guide when the bobbins are raised into winding position so as to trap the yarn, raise the yarn guide above the normal traverse, and initiate unwinding, a supplementary length of yarn being first wound on to the spindle above the bobbin. In one modification, Figs. 1 and 3, the spindle 7 has a truncated conical upper extremity 13 to receive a supplementary length of yarn wound above the main yarn mass M in the yarn holder 4, the extremity 13 having a depression to receive an interceptor disc 14 adapted to bear against the yarn T extending from the guide 6 when the spindle 7 and bobbin 12 are raised to the correct unwinding position. In an alternative modification, Fig. 4, the spindle 7 has a flexible cone 16 attached to it, the apex of the cone entering the bore of the guide 6 in the unwinding position to trap the yarn and thus initiate unwinding.
Patent GB-299222-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B75/30
Filed: 1927-12-16
Abstract: 299,222. Martin, D. J. Dec. 16, 1927. Pistons.-The main piston 8 of an internal - combustion engine works inside an auxiliary piston 11 connected to an eccentric 14 or crank arm 90‹ behind the main crank 10. The areas of the piston surfaces are equal and the throws are arranged so that the compression space is maintained constant during the first part of the movement of the main piston past the inner and outer - dead centre. The piston surfaces need not be of the same area but any difference is compensated by a variation in the throws. If desired, the auxiliary piston may have a greater displacement than the main piston. The auxiliary piston is cooled by circulating fluid through the chamber 15 surrounding it; a strengthening spiral web 17<1> guides the piston in the cylinder. The piston is prevented from turning by key-ways and guides 18, 19.
Patent GB-447980-A (GB)
Title: Improvements in water purification
IPC: C02F1/68
Filed: 1934-11-28
Abstract: 447,980. Mixing liquids in flow. PATERSON, W., Windsor House, Kingsway, London. Nov. 28,1934, No. 34171. [Class 86] Apparatus for adding proportionate quantities of a reagent to water comprises a tipper device operated by the flow of water and operating a member which delivers the reagent from a supply maintained at a constant level. The water flows from a tank a through an orifice d and operates a tipping vessel e directly connected to a paddle i the movement of which sweeps definite amounts of the reagent from a channel k in which the reagent is maintained at a constant level by a bird fountain device f, g. The water may escape from the tank a by two orifices, that passing through the other orifice passing directly to the tank b.
Patent GB-1517697-A (GB)
Title: Measuring cells for measuring electrical conductivity of liquids
IPC: G01N27/07
Filed: 1974-08-02
Abstract: 1517697 Conductivity measurement GEORGE KENT Ltd 22 July 1975 [2 Aug 1974] 34210/74 Heading G1N Liquid conductivity is measured in a cell comprising co-axial annular electrodes by determining the alternating current between two electrodes 1, 4 necessary to maintain constant the voltage between electrodes 2, 3, a fifth electrode 5 being located on the side of electrode 1 remote from the voltage electrodes 2, 3 and connected to electrode 1 by an amplifier which presents a low impedance to electrode 5 and a high impedance to electrode 1. Leakage from the fifth electrode thus connected does not affect the measurement. Preferably a sixth electrode 6, placed on the side of electrode 5 remote from the other electrodes and connected to electrode 4 and earth is also provided as an earth return path for leakage from electrode 5. As shown, the voltage between electrodes 2 and 3 is compared at 26 with a reference 28 and the difference drives voltage controlled generator 16 to alter the current supplied between cell electrodes 1, 4 by secondary 12. The current passes through resistors 18, 20 and the voltage across these, which is a measure of the liquid conductivity is amplified at 36, 38, supplied to phase sensitive rectifier 40 which uses the reference voltage from amplifier 24 as a reference and the output is smoothed at 42. Temperature compensation. Thermistor 34, in parallel with resistor 20, is arranged in the liquid. Alternatively a temperature sensor in the liquid may control the gain of amplifier 36. Range limitation. A portion of the reference voltage may be tapped off from potentiometer 48 and applied to amplifier 38 which then functions as a difference amplifier. This permits improved sensitivity over a small range. Bell construction. The electrode surface is preferably flush with the insulating material of the cell wall. The axial separation between first and fourth, first and fifth, and, fifth and sixth electrodes is preferably equal. The second and third electrodes are preferably symmetrically located between the first and fourth electrodes and mutually spaced by half the first and fourth electrode separation.
Patent GB-348659-A (GB)
Title: Improvements in the automatic electric control of cyclic operations in mechanisms andother equipment
IPC: G05B19/02
Filed: 1929-11-09
Abstract: 348,659. Switching systems. JENKINS, H. C., 815, Salisbury House, London. Nov. 9, 1929, No. 34237. [Class 38 (iv).] An electric control system for controlling a series of manufacturing or similar operations, each of predetermined duration, comprises a number of control stages each relevant to one operation and individually controlled by a master time device. Means are provided whereby, at the completion of an operation, contacts in the next control stage are closed and the completed stage de-energized. As shown in the Figure a commutator switch with four positions, in position 1 bridges contacts A, D thereby energizing auxiliary relay 13 from battery 1 through contact 17x which is closed at the end of a complete cycle of operations by the master time device (not shown). In position 2 of the commutator switch contacts C, D are bridged through a resistance equal to that of the master relay 5 and relay 5 closes to complete a retaining circuit through contacts 6, 7 and energize bus-bar 3. Contacts 8 also close the circuit of a magnetic clutch 20 in the drive from the master time device and contacts 9 close with a delay-action in the circuit of a demagnetizing winding on relay 5. Auxiliary relay 13 having closed time device 14 closes its contacts to energize main relay 10 and de-energize relay 13. Relay 10 closes contacts 11 in the power circuit of the manufacturing operation at the conclusion of which contact-member 17 is moved by an element in the manufacturing process to close gaps 17a, 17b to de-energize relay 10 and then to close the circuit of auxiliary relay 13 in the next stage of operations when the cycle is repeated. The sequence of closure of gaps 17a, 17b may be reversed as shown. The Specification describes the invention applied to the moulding of fuel briquettes as described in Specification 234,495, [Class 87 (ii), Moulding plastic &c. substances].
Patent GB-338354-A (GB)
Title: Improvements in coin freed automatic delivery machines
IPC: G07F11/18
Filed: 1929-11-09
Abstract: 338,354. Oldham, J. L., and Bottomley, J. Nov. 9, 1929. Delivery of articles stored in piles.-In a coinfreed article delivery machine the magazine or carrier for the articles is adjustable in respect of both the length and width of the package accommodated, so that the cross-sectional area of the magazine can be varied. The magazine is composed of four angle plates 6 - - 9, Fig. 2, the plates 6, 7 being attached to brackets 10 slidable in a supporting bracket 13 and held in adjusted position by bolts 12. The plates 8, 9 are carried by blocks 17 which slide in forked arms 16 of the brackets 10 and are secured in adjusted position by thumb screws 20. The delivery drawer is altered in size by backing plates.
Patent GB-1045348-A (GB)
Title: Lattice conveyor
Inventor: STEWART WILLIAM RENNIE
IPC: D01G15/90
Filed: 1963-08-30
Abstract: 1,045,348. Endless conveyers. WILLIAM R. STEWART & SONS (HACKLEMAKERS) Ltd. Aug. 26, 1964 [Aug. 30, 1963], No. 34395/63. Heading B8A. An endless conveyer comprises light alloy members 4 having slots 23 for engagement with flexible metal links 12. Instead of the ends 24 of the links 12 being 8-shaped they may be of C, or inverted V-shape (Figs. 1 and 2, not shown). The tread of the return roller (not shown) may be of leather.
Patent GB-344355-A (GB)
Abstract: 344,355. Couplings for tractors &c. THOMAS, J. L. H., 5, High Street, Barnet, Hertfordshire. Dec. 3, 1929, No. 36940. [Class 79 (iii).] A cycle-trailer coupling allowing universal movements comprises an upright plate E<1> rotatably mounted on a transverse bracing bolt B, and a rightangled plate E<2> swivelly coupled to the plate E<1> by a bolt F, the trailer arm'being swivelly coupled to the other face of the plate E<3> by a bolt H. The bracing bolt B may couple frame-extension stays A<1>, D<1> anchored about the rear wheel spindle and seat pillar respectively in known manner. The Provisional Specification describes also a ball-andsocket form of coupling.