baber/WOPTO huggingface dataset:
Patent GB-1437772-A (GB)
Title: Device for the indication of contact between a grinding wheel and a workpiece
IPC: B24B49/16
Filed: 1975-01-20
Abstract: 1437772 Grinding VYZKUMNY USTAV OBRADECICH STROJU A OBRADENI 20 Jan 1975 [21 Jan 1974] 2393/75 Heading B3D A device for indicating contact between a grinding wheel and a workpiece comprises a shaft 8 adapted to be connected to the spindle of the grinding wheel so as to rotate therewith, a first gear or other peripheral grooved wheel 9 firmly connected to the shaft so as to be non- rotatable relative thereto, a second wheel 10, identical to the first carried by the shaft and connected thereto by an elastic member 12 allowing limited rotation of the second wheel relative to the shaft, and a respective scanning head 15, 16 being provided adjacent the periphery of each wheel, the output of both scanning heads being connected to the input of a common phase meter 17. The device may be used in a machine in which the grinding wheel is mounted on a spindle belt driven from an electric motor and the wheel has an infeed ten times the rough grinding feed for movement towards a workpiece rotated between head and tail stocks. The shaft 8 of the device is fixed to the grinding wheel spindle and the first gear is fixed to the shaft 8. The second gear is mounted on bearings on the shaft and connected thereto by a spring 12. A plate 11 is mounted on bearings on the shaft and is anchored by a member 13 engaging the frame 14 of the machine. The scanning heads 15, 16 are supported by the plate 11 adjacent the respective wheels 9, 10 and are connected to a phase meter 17 and amplifier 18. When the grinding wheel rotates, the frequency of the voltage of head 15 equals that of head 16 and the phase therebetween is constant. When the wheel contacts the workpiece and is slowed causing a corresponding slowing of wheel 9, the frequency of the voltage from head 15 is changed relative to that from head 16 with a consequent difference in phase between the heads which is detected by meter 17 to alter the rapid infeed to the rough grinding infeed.
Patent GB-371459-A (GB)
Title: Process for the manufacture of thioindigoid dyestuffs
IPC: C09B7/10
Filed: 1931-01-24
Abstract: Symmetrical thioindigo dyestuffs are manufactured by the action of a sulphur halide on a methyl ketone of a polynuclear aromatic hydrocarbon or a substitution product thereof containing a free position ortho to the keto group.  The reaction is carried out with the application of heat and advantageously in the presence of an indifferent organic solvent.  In examples: (1) a -naphthylmethylketone is heated with sulphur monochloride in nitrobenzene, yielding 2 : 1-naphthoxythiophene-indigo; the nitrobenzene may be replaced by other solvents such as glacial acetic acid, chlorobenzene or trichlorobenzene; (2) b -naphthylmethylketone is heated with sulphur monochloride in o-dichlorobenzene to produce 1 : 2-naphthoxy thiophene-indigo; (3) the isomeric monoacetylphenanthrenes (obtained by the action of acetyl chloride on phenanthrene in nitrobenzene in the presence of aluminium chloride and separated by crystallization from alcohol, then from glacial acetic acid and vacuum distillation of the residue) are heated with sulphur monochloride in nitrobenzene; (4) 2-acetylnaphthalene is treated with sulphur chloride in ligroin, producing a resin which is separated, pulverized, and heated in nitrobenzene to yield a product identical with that of (2); the starting material may be replaced by a mixture of a - and b -naphthylmethylketones (obtained by the action of acetyl chloride on naphthalene in carbon disulphide, benzene, dichlorobenzene or other solvent, in the presence of aluminium chloride); (5) 1-methoxynaphthalene-4-methylketone is treated with sulphur monochloride in glacial acetic acid and the resin which separates is isolated, pulverized, and heated with nitrobenzene to convert it into the dyestuff; the starting material may be replaced by acetyl-1-chloronaphthalene (obtainable by the action of acetyl chloride on 1-chloronaphthalene in carbon disulphide in the presence of aluminium chloride).  Specification 16517/10, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-879568-A (GB)
Title: Appliances for detecting the presence of water, metals and other materials
IPC: G01V9/00
Filed: 1957-01-23
Abstract: 879,568. Divining-rods. VEALE, L. J. Jan. 23, 1958 [Jan. 23, 1957], No. 2489/57. Class 85. A device for detecting water, metals and other materials comprises an L-shaped metal rod the limb 3 of which is rotatably supported in a tube 5. In use two of the devices are held one in each hand of the operator with the limbs 2 of each rod pointing forward, the limbs 2 converging on the presence of the material or objects to be detected. The tube is of copper and contains a sleeve 8 for reception of the limb 3 of the rod which is chromium plated. The sleeve is surrounded by floating copper discs 10 which divide the tube into compartments 12, 13, 14 respectively containing copper needles 15, springs 17 and metal filings 14. In a modification the limb 2 carries a wire having the form of a sine curve.
Patent GB-432279-A (GB)
Title: Improvements in or relating to puzzles
IPC: A63F9/08
Filed: 1934-01-24
Abstract: 432,279. Puzzles; educational appliances. MAUNSELL, A. E. L., Eardenstowe, Wisborough Green, Surrey. Jan. 24, 1934, No. 2519. [Classes 132 (iii) and 146 (ii)] [See also Group XVIII] A puzzle and advertising device comprises two or more paper, card, celluloid, or leather superposed discs a, b of equal diameter rotatable about a common pivot c, the upper disc b being regularly or irregularly toothed and the peripheries of both discs bearing letters or signs to form together words, phrases, sentences or advertising matter. Other discs such as d, Fig. 5, may be used in addition. The disc b may be replaced by two discs each having half the number of teeth or by four discs each having one quarter the number of teeth and so on. The central portion of the upper disc b and of the back of the lower disc a may carry printed advertising matter. In the modification shown in Fig. 6 the top disc b<1> is provided in known manner with annularly disposed radial slots e spaced inwardly from its edge, letters being provided annularly on the lower disc a to appear at the slots e and letters being provided on the disc b<1> between the slots e.
Patent GB-1074666-A (GB)
Title: Improvements in or relating to harmonic generators
IPC: H03B19/16
Filed: 1966-01-19
Abstract: 1,074,666. Transistor harmonic generator circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Jan. 19, 1966 [Jan. 23, 1965], No. 2568/66. Heading H3T. A harmonic generator of the type in which a ringing circuit is excited by a switching device (such as transistor Ts 1 ) has a diode in shunt with the ringing circuit so as to damp out oscillations after the first half-cycle and a temperature stabilized threshold circuit to remove spurious oscillation across the diode. As shown, T s1  is turned on by negative halfcycles of a 12 kc/s. square wave form a Schmitt circuit (not shown), giving a single half-cycle at a harmonic frequency across the circuit L 1 , C 2 . Further oscillation is minimized by diode D 1  and by transistors T s2'  Ts 3 , which respectively operate in class AB and class C. The harmonic amplitude is stabilized against temperature by R 2  and by Ge diodes D 2 , D 3  which control the threshold of Ts 2 . Ts 3  may be biased by a potentiometer across D 2 , D 3 . The invention may be used as a carrier source in mobile telecommunications apparatus.
Patent GB-524282-A (GB)
Title: Improvements in or relating to spools for photographic roll films
IPC: G03B17/30
Filed: 1939-01-25
Abstract: 524,282. Photographic roll-film spools. HEMMINGER, A. Jan. 25, 1939, No. 2640. Convention date, Jan. 29, 1938. [Class 120 (iii)] [Also in Group XX] A photographic roll-film spool with a wooden spindle has sheet metal end discs which grip the ends of the spindle by means of outwardly projecting annular grooves in the discs, and which are fixed on to the spindle by axial pressure on these grooves, inturned flanges extending in beyond the end discs being provided to engage tightly in the end bores of the spindle. As shown, each end disc b has an annular groove c impressed from its inner side provided with a central opening for the passage of a turning key or pivot pin, the edges of these openings being provided with inturned flanges d. The bases of the grooves c may have small indentations p pressed into the spindle a to prevent rotation of the discs. The friction of the spool on the pivot pin or turning key is decreased since the spool runs with the inturned metal flanges of the end discs on the pin or key.
Patent GB-1182073-A (GB)
Title: Improvements in and relating to Aqueous Copolymer Dispersions
IPC: C08F218/02
Filed: 1968-01-18
Abstract: 1,182,073. Aqueous copolymer dispersion. FARBWERKE HOECHST A.G. 18 Jan., 1968 [18 Jan., 19671, No. 2720/68. Heading C3P. An aqueous dispersion of a copolymer is prepared by copolymerizing, by an emulsion p )lymerization, (1) a vinyl ester, an acrylic acid ester, a methacrylic acid ester, or a mixture of any two or more of these substances, if desired together with up to 50%, based on the weight of the total monomer mixture, of one or more other olefinically unsaturated monomers, and (2) at least one monomer of the formula in which n is 1 or 2, B, represents a methyl or a phenyl group and, when n is 1, R 2  represents -OCH 2 COOCH=CH 2 , -COO-CH = CH 2  and when n is 2, R 2  represents in which radicals R 3  represent a straight-chained or branched alkyl radical having from I to 10 carbon atoms, in the presence of from 0.1 to 15% by weight, based on the monomers, of at least one emulsifier and/or protective colloid. In the examples vinyl acetate, vinyl esters of a mixture of C 9 _ 11  aliphatic carboxylic acids branched in the a-position, p-benzoyl-phenoxyacetic acid vinyl ester, p-hydroxybenzophenone acrylate, benzophenone-o-carboxylic acid vinyl ester, 4 - acrylamido - benzophenone, di - nbutylmaleate monomers of formula methyl methacrylate, acrylic acid and butyl acrylate were copolymerized in the presence of water, hydroxyethylation product of nonyl phenol with ethylene oxide, sodium vinylsulphonate, anhydrous sodium acetate, reaction l product of polypropylene oxide and ethylene t oxide, a copolymer of N-vinyl-N-methylacetamide and di-2-ethylhexylmaleate, potassium persulphate and polyvinyl alcohol. The copolymers are pigmented, e.g. with titanium dioxide, barium sulphate, talcum, chalk, heavy spar and hydrated iron oxide and cross-linked with a xenon lamp.
Patent GB-1216197-A (GB)
Title: Device for temporarily storing a length of a thread
Inventor: MULLEKOM HUBERT PETER
IPC: D03D47/34
Filed: 1968-01-18
Abstract: 1,216,197. Jet loom. MASCHINEFABRIEK L TE STRAKE N.V. 18 Jan., 1968 [18 Jan., 1967], No. 2748/68. Heading D1E. Weft 2 drawn continuously from a bobbin 1 for picking by a nozzle 5 is stored in a flat tube 13 into which it is blown by a row of jets 24. Restriction valves 26 provide a greater air flow from the end jets than from the middle ones to ensure that the limbs 2b of the loop of weft lie against the walls 16 of the tube to prevent the loop from snarling. The device is threaded by holding the end of the weft at the inlet 18 and closing a valve 22, whereby injector action by a jet 25 draws the weft in and blows it to the outlet 19.
Patent GB-653635-A (GB)
Title: An improved method of packing spring assemblies such as interiors for mattresses, and apparatus therefor
Inventor: BYE CECIL LEONARD
IPC: B65B63/02
Filed: 1948-01-30
Abstract: 653,635. Packing spring assemblies. BIRNAM PRODUCTS, Ltd., Jan. 30, 1948, No. 2794. [Class 94(i) ] A method of packing a spring assembly such as an interior of a mattress in which rows of springs are connected to each other at top and bottom by wire coils, clips &c. consists in at least partially compressing the rows of springs progressively and folding the rows in such manner that they become superimposed on other rows of the springs. A jig (Fig. 1) for compressing the springs comprises a row of prongs 6 rigid with a horizontal base member 7 and spaced from a second base member 10 in the form of a rod connecting the prongs. Posts 11 form guides for a crosshead 12 which has apertures 13 corresponding with the positions of the prongs 6. In operation each spring of the first row A (Fig. 6) of coils is compressed and passed over a respective prong 6. The mattress is then manipulated so that the second row B of coils is folded relative to the row A (about the connecting coils a) and is compressed and passed over the prongs 6. The row C is then folded in the opposite direction (about the connecting coils b), and compressed on to the prongs 6 and so on. When all the rows have been threaded on the prongs they are compressed by means of the cross-head 12 which may be actuated by a suitable hand- or foot-operated linkage. String, wire &c. is then tied round each coil by means of a threader 14 (Fig. 8) of wire, which is passed up through a slot 9 provided in each prong. The cross-head is then removed and the spring assembly (Fig. 9, not shown) is withdrawn from the jig. In a modified construction the member 10 is replaced by angle-sectioned members, one lying adjacent each side of the prongs and connected at each end to the ram of a vertically disposed hydraulic cylinder. Each cylinder is connected with a common hydraulic pressure conduit, the supply of fluid to the cylinder being controlled by a valve. The cross-head 12 is replaced by a rod which may be passed through holes at the extremities of the prongs after all the coils have been fitted on. Upward movement of the angle-shaped members under hydraulic pressure then compresses the coils as before. The springs may be heat-treated either before or after assembly in view of the stresses developed in the assembly in carrying out the invention.
Patent GB-620905-A (GB)
Title: Clothes dryer
IPC: D06F58/02
Filed: 1947-01-30
Abstract: 620,905. Drying-apparatus. BENDIX HOME APPLIANCES, Inc. Jan. 30, 1947, No. 2914. Convention date, Feb. 20, 1946. [Class 34(ii)] A clothes drier comprises a cylinder rotating on a horizontal axis having an end wall provided with an opening concentric with its axis of rotation and a fixed air duct adjacent thereto with inlet and outlet openings for the circulation of air through the cylinder. In the embodiment a clothes-containing cylinder 17, within a heat insulated casing 43, is driven by a belt 28 passing over a front tubular opening 21. Belt 28 is driven through belt gearing by a motor 24. The meshed front end wall 19 of the cylinder is partially covered by a panel 12 leaving an outlet 29 and inlet 30 for heated air. An air circulating fan 31, belt driven by motor 24, is mounted adjacent the outlet 29, and draws air from the cylinder and drives it through duct channels 34 and 35 mounted on the panel. The air passes through electric heaters 39 into the cylinder inlet 30. A scoop 38 is arranged in the duct 34 to exhaust a portion of the circulating air.
Patent GB-383811-A (GB)
Title: Joke pencil
IPC: B43K29/00
Filed: 1932-02-01
Abstract: 383,811. Surprise toys. MEYER, (nÚe MEYER), E., Naunystrasse, Berlin. Feb. 1, 1932, No. 2995. Convention date, Feb. 7, 1931. [Class 132 (iii).] A joke pencil comprises a detonating device c carried by a rod a, normally held in the case g, by a head f thereon eccentrically engaging a catch plate h, against the tension of a spiral spring b mounted between discs o, e, the former being fixed to and. the latter loose on rod a. Pressure on the pin l simulating a lead causes the head m thereof to contact with and direct the head f through the plate h, whereupon the rod a moves out of the casing until held by a stop n, the striker arm i, Fig. 1, being rotated by a spring to hit the percussion cap k. Loading is effected by inserting a cap k, rotating the striker i to its stressed position and pushing the rod a inwards until the head f is held by the plate h.
Patent GB-777754-A (GB)
Title: A method of preparing a new hydroxycoumarin derivative with anticoagulating properties
IPC: C07D311/48
Filed: 1955-02-02
Abstract: The invention comprises 3-(4-hydroxycoumarinyl)-31-chromonyl-methane of the formula <FORM:0777754/IV(b)/1> which is prepared by reacting 3-(b -salicoylethyl)-4-hydroxycoumarin with a formic acid ester and sodium to give the corresponding sodium salt from which the 3-(4-hydroxycoumarinyl)-31-chromonyl-methane can be obtained by acidification.  The compound shows antiprothrombic activity.
Patent GB-563604-A (GB)
Title: Gas heaters
IPC: F28D7/00
Filed: 1943-02-27
Abstract: 563,604. Gas heaters for turbines. AKT.-GES. FUR TECHNISCHE STUDIEN. Feb. 27, 1943, Nos. 3239 and 3240. Convention dates, Jan. 30, 1942, and May 6, 1942. [Class 110 (iii)] Gas, preferably air, for thermal power plants, is heated indirectly part flowing through tubes 5 and being heatec mainly by radia tion from a heat source 3, and part flowing througl tubes 7 in contra flow to gases passing downwards through a flue 11. The working fluid is compressed and led to a turbine which drives the compressor, and also a useful output machine. Air for the furnace, which may contain a grate, is pre-heated in tubes 9. The burnt gases passing up the flue 8 flow to the atmosphere. Temperatures of the air in different parts of the heater are given in the Specification. The tubes 5 may be tapered in the direction of flow. Regulation devices may be used to control the air flows through tubes 5 and 7. In a modified arrangement, air flowing into the tubes 7 may be divided, part flowing upwards and part downwards in contraflow to the heating gases. Part of the tubes 7 may lie in a horizontal flue connecting the parts 1 and 11. This part may be made easily removable, being supported by the masonry of the heater, or suspended from collecting and distributing headers. In a further arrangement, the tubes heated by contact of combusted gases, are divided into three sections. The section lying in the flue of lowest temperature is placed between surfaces of a heater for preheating the combustion air.
Patent GB-419910-A (GB)
Title: Improvements in or relating to lighters or igniters
IPC: B41K3/38
Filed: 1934-02-01
Abstract: 419,910. Combined igniter and pencil &c. ART METAL WORKS, Inc., Aronson Square, Newark, New Jersey, U.S.A.- (Assignees of Aronson, L. V. ; c /o Art Metal Works, Aronson Square, Newark, New Jersey, U.S.A.) Feb. 1, 1934, No. 3309. Convention date, Nov. 3, 1933. [Class 75 (iii).] A removable torch 14 is screwed at 26 in a sleeve 13 adapted to slide outwardly in the barrel 12 to expose a pyrophoric member 25 along which the torch is rubbed to effect ignition, and a mechanical pencil 10, fountain pen, lip stick, manicure implement or the like is fitted to the other end of the barrel. The torch comprises an asbestos or other absorbent-sleeve 32 held by fingers 31 of a sleeve 27 around a central steel rod 23 terminating in a striker 24, the sleeve 27 being held rotatably on the rod by an indentation 29 engaging an annular groove 28. The sleeve 13 is held against rotation by a pin 20 engaging in a slot 21 and is provided with a felt or other absorbent lining 19.
Patent GB-637894-A (GB)
Title: Improvements relating to circuit arrangements for the operation and control of gas discharge lamps
IPC: H05B41/232
Filed: 1948-02-04
Abstract: 637,894. Supply systems for space-discharge lamps. INDUCTIVE APPLIANCES, Ltd., and LARK, G. T. K. Feb. 4, 1948, No. 3312. [Class 38 (iv)] A circuit arrangement for starting and operating a hot filament discharge lamp 7 from an A.C. supply includes a transformer 4 having a number of windings connected respectively to the lamp filaments 5, 6 for re-heating; across the lamp discharge path; across the mains supply in series with a current-limiting means 3 for the lamp; and one closely coupled to winding across the discharge path connected to the mains supply in series with a condenser 9, the connection of the last winding with respect to that across the discharge path being such that the voltage across the lamp due to current in the winding in series with the condenser is of the same polarity as and additive to that across the discharge path so that upon application of the supply current the steepfronted surge current through condenser provides a high voltage pulse and hence a momentary lamp discharge to remove charges from the inner wall of the lamp envelope and permit the lamp to start automatically at a lower voltage when the filaments attain a suitable temperature. As shown, the respective windings 403, 404, 401, 402 and 405 may be in autotransformer relationship and constitute tapped portions of a single winding. The condenser 9 may constitute the capacitance provided for power factor improvement and may be connected to its transformer winding, which may constitute a separate transformer winding (Figs. 3 and 5, not shown) through an additional winding on the ballast choke 3 so that the lamp operating current serves to increase the voltage across the lamp. The series choke 3 may be dispensed with by providing the transformer with high leakage reactance in which case the primary winding would constitute a separate winding on the transformer (Fig. 6, not shown). The invention may be applied to a number of series-connected lamps (Fig. 2, not shown).
Patent GB-690041-A (GB)
Title: Improvements in envelope making machines
Inventor: INGLIS JOHN FAIRNINGTON
IPC: B31B19/00
Filed: 1950-02-09
Abstract: 690,041. Making envelopes &c. CARLAW (ENGINEERS), Ltd., D. Jan. 18, 1952 [Feb. 9, 1950], No. 3328/50. Class 94(ii) In an envelope-making machine of the plunger type, envelopes are ejected in succession from the tumbling table by directing a blast of air against the closing flap when the table is downturned. In the machine described, the table 10, 11, 12, Figs. 1 and 3, is pivoted by trunnions 13 in bearings 14 on the frame 15, 15A. The table carries a pair of air nozzles 35 secured to a block 36 adjustably attached to the support 10 by bolts 37 passing through slots 31. The nozzles are interconnected by a passage 38 in block 36 and their uppermost portions 35A are directed forward over the surface of plate 11. An inlet tube 39 in block 36 is connected by a flexible tube 40 to a tube 42, extending into one of the trunnions 13, which forms a continuation of the air supply conduit 43 which is fitted with a self-closing valve 44. The valve is operated by a striker 47 on a rotatable shaft 48 acting through a bellcrank lever 46 and the valve stem 45. When the tumbling table 10, 11, 12, is turned downwards with an envelope thereupon, at an appropriate time the valve is operated to direct air blasts from nozzles 35 against the inside of the envelope closure flap. The envelope is accordingly ejected against the deflector 34 which guides it on to the conveyer fingers 32 which remove it for drying of the adhesive. Specification 686,978 is referred to.