baber/WOPTO huggingface dataset:
Patent GB-129397-A (GB)
Title: Telephone Systems.
IPC: H04M5/10
Filed: 1918-05-08
Abstract: 129,397. Western Electric Co., (Western Electric Co.). May 8, 1918. Exchange systems.-An operator's telephone circuit including a receiver 30 associated with the secondary of an induction coil, adapted to be bridged across a cord-circuit C, is provided with means for altering the impedance of the bridge. The invention is particularly applicable for the cir-. cuits of operators who supervise trunk cails by listening-in. The receiver is normallybridged across the high-resistance sections 27, 28 of the secondary, the sections 26, 29 of which are connected through condensers 34, 32 to leads 33, 31 connected to the contacts of the ordinary listening-key.9 and to the contacts of a slow-acting relay 41. When the operator desires to speak to either party, she depresses key 9, bridging the secondary across the line, the receiver being in shunt to the sections 27. 28 When the operator desires to listen-in for supervisory purposes, she depresses key 10, which, by closing contact 11, energizes a relay 40, which opens the circuit of the primary 21 and changes the circuits of the secondary so that the receiver 30 is bridged across the low-resistance section 26, and the earth connexions are removed The relay 40 also energizes the slow-acting relay 41, which, after the impedance of the bridge is altered, connects it to the cord-circuit. The transmission efficiency is thus not materially decreased when the operator listens-in.
Patent GB-1372508-A (GB)
Title: Process for making a knife which has a cutting and a slitting blade
IPC: B23P15/40
Filed: 1973-02-16
Abstract: 1372508 Making cutting and slitting knives BOHLER & CO AG Gebr 16 Feb 1973 [23 March 1972] 7784/73 Heading B3A [Also in Division B4] A method of making a knife which has a cutting blade B and a slitting blade A comprises providing the slitting blade A with a protruding boss C, which locates the slitting blade relative to the cutting blade, inserting the boss into a bore formed in the cutting blade, and welding or soldering the blades together at the bore. The knife is used for cutting paper, textiles, leather, plastics materials and the like, and the blade A forms marking or processing slits when, e.g. in the clothing industry, pieces of textile material or leather are cut by the knife.
Patent GB-370608-A (GB)
Title: Process for photochemical production of aluminium printing forms
IPC: B41N3/03
Filed: 1931-03-13
Abstract: 370,608. Photo-mechanical printing- surfaces. BEKK & KAULEN CHEMISCHE FABRIK GES., 102, Hindenburgdamm, Lichterfelde, Berlin. March 13, 1931, No. 7788. Convention date, March 17, 1930. [Class 98 (ii).] In the production of etched aluminium plates, and in order to facilitate removal of the photo-resist layer subsequent to etching, the plates are preliminarily treated before sensitizing, with a solution of an acid-free salt of a trivalent metal, e.g. sulphates of aluminium, chromium or iron, or the corresponding alums. Dilute acid solutions, e.g. phosphoric acid or nitric acid (10 per cent), may be used to remove the resist after etching. Phosphoric acid may be added to the iron chloride etching solution. The resist is covered with a varnish or resin solution before etching.
Patent GB-350959-A (GB)
Title: High-speed switching arrangement for picture transmission and television
IPC: H04N3/12
Filed: 1930-03-10
Abstract: 350,959. Television. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. March 10, 1930, No. 7801. Convention date, March 8, 1929. [Classes 39 (i) and 40 (iii).] Relates to systems in which a screen is constituted by rows of lamps or light-sensitive cells, each lamp &c. being connected in circuit in turn, and consists in the use of a mechanical distributer 20 controlling the connections of groups I .. XI of lamps &c. and an electronic distributer 21 controlling the more rapid connections of the individual lamps &c. 1 .. 8 in each group. The distributer 20 preferably has r contacts 9 and r-1 radial arms 10, so that in lth/r of a revolution all the groups I . . XI are switched into circuit in turn. The electronic distributer has r anodes 11 and a central cathode 13, the electron stream 12 rotating under the action of solenoids 14. . 17. Instead of the lamps &c. being fed through the electronic distributer, the charges given to each anode 11 may affect the grids of thermionic valves to allow a larger current to flow through the lamps &c.
Patent GB-769614-A (GB)
Title: Improvements in and relating to electric clocks
IPC: G04C3/16
Filed: 1955-03-17
Abstract: 769,614. Electric clocks. GENERAL ELECTRIC CO. March 17, 1955 [March 17, 1954], No. 7851/55. Class 139. An electric clock comprises a gear train between two gears of which a resilient torque coupling is provided so that the gear train may be driven by a continuously rotating electric motor and controlled by an escapement. The electric motor comprises a casing 8, Fig. 2, an annular field magnet 9 rotor coils 10 and a shaft 11 which carries a pinion 15, Fig. 3, driving a gear 16. The gear 16 is rotatable on the seconds shaft 18 and is coupled by a coil spring 6 to a gear 19 which is fixed to the shaft 18 and which drives the escape wheel pinion 22 of the lever escapement 51, 52 the curb pins 25 of which are carried by a gear segment 24 rotatable by a pinion 23. The shaft 18 drives the minute and hour hands through a reduction gearing which includes a friction clutch 38 so that the minute and hour hands may be set by rotation of a knob 3, Fig. 2. The motor is removable as a unit from the clock casing. Upon stoppage of the motor due to dirty brushes or commutators the spring 6 causes the brushes to wipe back and forth across the commutators to effect cleaning of the contact surfaces. The action of the spring 6 also reduces the tendency of the escapement to lock on the application of the load.
Patent GB-505705-A (GB)
Title: Device for obscuring lamps for purposes of precaution against air raids
IPC: F21V11/18
Filed: 1938-03-14
Abstract: 505,705. Lampshades. FASEL, A. March 14, 1938, Xos. 7927 and 7928. Convention dates, March 13, 1937 and June 29, 1937. [Class 75 (ii)] A device which, when closed serves to darken electric lamps as a precaution against air raids, and when open, functions as a reflector, comprises a plurality of rigid opaque leaves 6 having reflecting inner surfaces and pivoted to a carrier 2 on pivots which are all disposed in the same plane the leaves being so shaped that, when closed or nearly closed, they overlap in a light-tight manner leaving only a small regulatable opening 8 for the passage of light. The closing of the leaves 6 is effected by cords 7 attached to a ring 3 against which the leaves 6 bear, the ring 3 being, vertically slidable on three guide pins 5 and springs 4 being provided to maintain the ring normally in position to open the leaves 6. The pins 5 have heads 5<1> and the openings in the ring 3 are formed as keyhole slots so that the ring can be locked in its lowermost position by a slight rotational movement imparted by the cords 7. Fig. 6 shows a further construction in which the device is supported by screws S from a gallery H, the leaves 6 being pivoted to a ring 12, Fig. 8, of polygonal form carried by an annular plate 11, the latter being formed with outwardly projecting lugs 11<11> which serve to prevent lateral movement of the leaves 6 on the ring 12. In this construction, two groups of cords 15, 16, secured respectively to a knob 15<1> and a thimble 16<1>, are provided for operating the ring 3, the latter being held in any desired position by blade springs 18 which are secured to bosses 19 and bear with sufficient force against the guide pins 13.
Patent GB-272632-A (GB)
Title: An improved grinding device for use with slicing machines
IPC: B24B3/46
Filed: 1926-03-23
Abstract: 272,632. Automatic Scale Co., Ltd., and Turner, W. B. March 23, 1026. Machine cutters, grinding in situ. - A device for grinding the rotary knife 11 of a slicing machine consists of a grinding-wheel 14 for grinding the bevelled face of the knife-edge and a wheel 24 for treating the flat face of the edge, the wheels when out of use being disposed in a housing 7 and located on the same. side of the knife. The grinding-wheel 14 is carried by a spindle 13 rotatable in a boss 7<c> on the housing and is pressed towards the knife by a spring 17. A knob 16 on the spindle has pins 16<a> thereon, which engage slots 7<d> in the boss when the grinding wheel is in operation, and which engage recesses 7f on the boss when the wheel is withdrawn from the knife. The finishing-wheel 24 is carried eccentrically on a disc 22 formed on a spindle 20 slidable and rotatable in a bush 19, slots 20<a>, in the spindle and a pin 19<b> in the bush locating the wheel in inoperative or operative positions; the slots end in an annular slot 20<c> which allows the spindle 20 to be turned. The wheel is angularly adjustable by means of pins 19<a> on the bush 19, which engage brackets 18 on the housing 7, and screws 26 which engage ears 19<c> on the bush 19. The housing is adjustably mounted on the boss 8 forming the knife bearing by means of a right and left handed screw 9.
Patent GB-503827-A (GB)
Title: Process and materials for colour photography
IPC: G03C7/392
Filed: 1937-07-07
Abstract: 503,827. Colour photography. KODAK, Ltd. July 7, 1937, No. 7956/39. Convention date, July 7, 1936. Divided out of 503,752. [Class 98 (ii)] A coupling component for use in multi-layer colour photographic material which is subjected to colour development, has the general formula X-NH-SO2-R where R is aryl or alkyl, and X is an aromatic nucleus, and where X and R may together constitute the said aromatic nucleus. These coupling components are relatively insoluble in the alkali of the developer, and may contain several coupling functions as described in Specifications 503,823 and 503,825. Examples of the coupling components are those obtained by condensing 2 or 3 molecules of alpha-naphthylamine or any other aromatic amino having a free para or ortho position, with one molecule of the chloride of the following acids, trimethylene disulphonic acid, 2 : 6 naphthalene disulphonic acid, diphenyl-3 : 3<1>-disulphonic acid, nitrobenzene disulphonic acid, alpha-naphthol- 3 : 6-disulphonic acid, and alpha-naphthol-2 : 4 : 7- trisulphonic acid. Also the compounds obtained by condensing with a primary amino, two molecules of naphsultam-, (2 or 4),-(carboxylic or sulphonic) acid chlorides, may be used. A compound containing an hydroxyl coupling group and a sulphon-arylamido group is obtained by reacting the 4-sulphonic-acid chloride of alpha-naphthol with aromatic amines. Coupling components having different speeds may be added to the emulsions and are generally finely dispersed in the amount of 3-20 grams per litre of gelatino silver bromide emulsion. The components may be formed within the emulsion preferably after ripening, or precipitated in centrifuged light sensitive emulsion before dispersion in gelatine. The elements are those described in Specification 500,826 (as open to inspection under Sect. 91), and they may carry a sound record in the layer nearest the support or in a grainless fourth emulsion layer sensitized to infra red.' The processing is as described in Specifications 503,752 and 503,824. Specifications 376,746,376,794,376,795,440,032, 440,089, 447,092, 458,664, 475,784, 476,786, 498,869, 498,870, 498,871, 498,875, 499,185, 503,816, 503,817, 603,818, 503,819, 503,820, 503,821, 503,826, 503,940, and 603,941 also are referred to.
Patent GB-786788-A (GB)
Title: Rotary brush
IPC: A46B13/00
Filed: 1955-03-18
Abstract: 786,788. Rotary brushes. OSBORN MANUFACTURING CO. March 18, 1955 [June 29, 1954]; No. 8018/55. Class 19. An annular rotary brush comprises an annular channel back of metal or other material opening radially outwards and brush material secured in the channel beneath an annular retaining element, a plurality of supports being provided on said back to engage the retaining element to maintain it concentric with the back. In Fig. 3 a metal backing strip 1 and a metal retaining strip 6 are formed into a ring and the ends are welded together, tags 7 bent outwardly from the back being provided to maintain the retaining strip in its correct position. Brushing material is inserted between the two strips and the right hand edge of the backing strip is turned slightly upwardly to temporarily retain the brush material in position. The backing strip is then formed into a channel section, Fig. 2. This causes the retaining strip to be bent into a flattened U-shape and thus to shrink tightly upon the tags 7. A number of such annular brushes may be located side to side in which case depressions 11, Fig. 5, may be formed in the side to provide ventilating ducts between the sections. In an alternative embodiment, Fig. 6, the retaining element is in the form of a washer 13 which is held in position on the spacing member 7 by swelling the channel member 1 so that the washer fits tightly in a groove in the spacing member. In a further embodiment the retaining member is in the form of a wire ring, Fig. 8 (not shown). The brush may be supported on a hub, Fig. 9, comprising a central portion 20 and radial arms 21 carrying arcuate end portions provided with projections 23 which fit in apertures in the back of the brush. The arcuate portions may alternatively be roughened to secure the hub to the brush back. The hub may be made of cardboard, vulcanite fibre synthetic or synthetic plastic material and the brush material may be horsehair, tampico, crimped wire, nylon, plastic coated wire or plastic coated glass fibre strands an even number of bundles of the brush material being inserted between each tag. Preferably the tags are formed by means of a double die to avoid sharp edges. Specification 637,322 is referred to.
Patent GB-693286-A (GB)
Title: Improvements connected with chain wheels and hubs of cycles
IPC: B62M9/10
Filed: 1950-03-31
Abstract: 693,286. Securing chain sprockets on hubs. COBURN, E. M. SIMPSON, [Representative of WRIGHT, 1. E.]. May 31, 1951 [March 31, 1950], No. 8075/50. Class 80 (ii). [Also in Group XXV] A chain sprocket 9 screwed on the end 5 of the hub 1 of a cycle wheel abuts against and is locked by a ring 8 screwed on an oppositelythreaded part 6 of the hub. The ring 8 has teeth 10 whereby it may be turned by a suitable tool to free the sprocket. The parts 5, 6 may be of the same diameter, but, as shown, the part 6 is of larger diameter than the part 5.
Patent GB-899561-A (GB)
Title: Improvements relating to adjustable supporting struts for pivotal windows of caravans, adjustable windscreens for motor vehicles and the like
Inventor: PERRY ERIC STANLEY
IPC: B60J1/14
Filed: 1960-03-08
Abstract: 899,561. Stays. PERRY BROS. (HALL GREEN) Ltd. March 6, 1961 [March 8, 1960], No. 8078/60. Class 65(1). An adjustable stay comprises telescopic elements of oval, octagonal or other non- circular section the outer element c being pivoted at c<SP>2</SP> to a window frame and the inner element c<SP>1</SP> being pivoted at c<SP>3</SP> to a bracket d which is itself pivoted at d<SP>1</SP>, d<SP>2</SP> to a bracket e fixed to the window, a hand lever f being pivoted at #<SP>4</SP> to the bracket d and serving to rotate the inner element within the outer element to obtain a binding effect and thus secure the window in a position of adjustment. The bracket d is assembled in the bracket e by inserting the pivot d<SP>2</SP> into an aperture e<SP>5</SP>, passing the pivot d<SP>1</SP> into an aperture e<SP>3</SP> through a lead-in slot e<SP>4</SP>, and then turning up an abutment e<SP>6</SP> to prevent the bracket d from returning to the position in which the pivot d<SP>1</SP> can pass out through the slot. A stud g is provided on the frame to engage an openended slot d<SP>3</SP> in the bracket d when the window is closed, a cam slot #<SP>2</SP> which may be engaged with the stud by turning the lever f being also provided to lock the window in this position. The window may be held slightly open by engaging the stud with an aperture #<SP>7</SP> in the lever.
Patent GB-103933-A (GB)
Title: Improvements in or relating to Chasing Bar Lathes.
Inventor: PORTASS FREDERICK WILLIAM
IPC: B23G1/02
Filed: 1916-06-08
Abstract: 103,933. Portass, F. W. June 8, 1916. Lathes.-A brass-finishers' lathe has the sliding and working bar carrying the tool-rests provided with two arms carrying tool-posts or turrets and so arranged that, when either arm is in operative position, the other is clear of the work. In the construction shown in Figs. 1 and 2, one arm 9 is rigidly attached to the bar 1, and the other 10 is adjustable as controlled by a bolt 16 and spring 17 and studs and slots 18. When the arm 10 is in operative position, the nut 4 engages the leadscrew 5. Instead of adjusting the cut by the bolt 16, the nut section may be adjustably mounted on its arm. When the arm 9 is in operation, the bar 1 is fed by hand or by a screw 15, or by means such as a cam. A slide 23, constrained by lugs to travel with the bar 1, is interposed between a screw 12, carried by a third arm on the bar, and a copying-bar 13. More than two tool-carrying arms may be provided on the bars.
Patent GB-550483-A (GB)
Title: Process for the direct production of manganese alloys by the aluminothermic method
IPC: C22B5/06
Filed: 1941-06-27
Abstract: 550,483. Alloys. FEUER E., and B.K.L. ALLOYS, Ltd. June 27, 1941, No. 8144. [Class 82 (i)] Alloys of manganese with other metals are made by exothermic reduction of manganese dioxide by means of a finely divided alloy of aluminium with the other metal or metals. An oxide of such other metal or some of the free metal may also be present in the mixture. The production of alloys of manganese with (a) copper, (b) nickel, and (c) copper and cobalt, is referred to.
Patent GB-868476-A (GB)
Title: Improvements in or relating to reserpine derivatives
Filed: 1958-03-13
Abstract: The invention comprises the racemic and optical forms of the lactone of 18b -hydroxy11, 17a -dimethoxy-16b -carboxy-3(14)-dehydro20a -yohimbane (I) and of the methyl ester of D 3(14)-dehydro-reserpic acid, (II) together with a process for their preparation by cyclising the racemic or an optically active lactone of 18b -hydroxy-11,17a -dimethoxy- 3-oxo-16b -carboxy-2, 3-seco- 20a -yohimbane with a dehydrating agent, e.g. phosphorus oxychloride, or thionyl chloride, removing excess of the reagent, treating the product in an inert solvent with alkali, preferably ammonia, until alkaline separating the lactone I, and reacting it with a methylating agent, preferably sodium methoxide or other alkali metal methoxide in methanol at an elevated temperature yielding II.  In Examples:- (1) the racemic lactone of 18b - hydroxy- 11,17a - dimethoxy- 3-oxo- 16b -carboxy-2, 3-seco-20a -yohimbane is refluxed with POCl3, the excess reagent distilled off, the residue in methanol at 0 DEG C. treated with excess concentrated ammonia, and racemic I extracted with methylene chloride; (2) racemic I obtained above is refluxed with sodium methoxide in methanol, neutralised, the solvent removed concentrated ammonia added to pH >13, and racemic II isolated by ether extraction; the corresponding dextro- and laevo forms of I and II are similarly prepared from laevo- and dextrostarting materials respectively; (3) dextro-rotatory I is refluxed with zinc in acetic acid giving reserpic acid lactone.  Specification 866,475 is referred to.
Patent GB-550254-A (GB)
Title: Improvements relating to insulating supports for electric wire fencing
IPC: H01B17/14
Filed: 1941-06-30
Abstract: 550,254. Insulator supports. WOLSELEY SHEEP SHEARING MACHINE CO., Ltd., and MACNAMARA, H. J. June 30, 1941, No. 8179. [Class 36] For supporting insulators B carrying electric conductors or electric wire fencing, a disc washer C, preferably of metal, is provided and has a central hole C<3>, and spikes C<1> adapted to engage the supporting stake A. A flange c<4> preferably surrounds the hole c<3> and projects into the insulator, and the spikes c<1> preferably extend from an outer flange c and are connected by curved surfaces c<2>. The parts may be secured by a wood screw F, Fig. 7,. passed through an outer washer G and threaded into the stake, or as in Fig. 2, a flat or spherical outer washer D, with slit and bent tongues d<1>, may be provided, the parts being then secured by a doubled wire E the ends of which are passed through two holes in the washer D, through the insulator and washer C, and round the stake where the ends are twisted together, the washer D being then turned by a tool or coin engaged with the tongues d<1> to.twist the wire and tighten the assembly. The recess b<1> in the insulator may be omitted.
Patent GB-572722-A (GB)
Title: Improvements in or relating to spindle supports for cinematographic film spools
IPC: G03B21/32
Filed: 1944-05-01
Abstract: 572,722. Kinematographic film spools. JACKSON, R. B. May 1, 1944, No. 8194. [Class 97 (i)] [Also in Group IX] A kinematographic film spool 1 comprises an internallythreaded sleeve 7, or a pair of oppositely disposed, internallythreaded bosses, the sleeve or bosses receiving a pair fo externally-threaded bushes, bored to fit the spindle. Further interchangeable bushes 9 and 11 are carried in bosses 6 and 8 on the spool and bored to fit spindles of different standard sizes. The bushes may have flanges 12 to facilitate easy removal.
Patent GB-308468-A (GB)
Title: Improvements in the production of ethyl alcohol
IPC: C07C29/04
Filed: 1928-03-19
Abstract: 308,468. Smith, H. G., Bridger, C. J., and Imperial Chemical Industries, Ltd. Marh 19, 1928. Ethyl alcohol is produced from ethylene and liquid water under high pressure and at temperatures of the order of 200-300‹ C. in the presence of inorganic salts having an affinity for ethylene, e.g. silver nitrate, cuprous chloride, mercuric chloride, which may be dissolved or suspended in the water.
Patent GB-550394-A (GB)
Title: Improvements in and relating to otterboards
IPC: A01K73/045
Filed: 1941-07-01
Abstract: 550,394. Torpedoes, detecting. GROEN, D. J. July 1, 1941. No. 8294. [Class 9 (ii)] [Also in Group VI] An otterboard for minesweeping, &c. comprises a board 1 of aerofoil section and of greater height than length, connected to the towing cable directly or indirectly on one side at three or more points. The connecting means may comprise lugs 6 and chains, &c. 8 connected to a ring 10 attached to the cable by a chain &c. 11. The lower and trailing edges may be covered with metal 4, 2 and the lower edge has extra weight 5 towards the forward edge. The edge 2 may have supporting feet 3. In another form, the board is oval and is connected to the cable at three points.
Patent GB-1083183-A (GB)
Title: Nuclear reactor
Inventor: ASHCROFT DAVID JOHN
IPC: G21C7/113
Filed: 1964-02-27
Abstract: 1,083,183. Reactions. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 15, 1965 [Feb. 27, 1964], No. 8295/64. Heading G6C. A reactor core comprises an assembly of elongate polygonal fuel assemblies, adjacent assemblies being spaced apart laterally by abutments, carried on the assemblies, in the form of ribs extending lengthwise of the assemblies; movable neutron absorbing blades are contained in the spaces between the fuel assemblies, and the abutment ribs serve to reduce lateral flow of coolant between adjacent control rod channels. The reactor is of the pressurized water type and has light water coolant circulated, by pumps internally of the pressure vessel, from the core to a heat exchanger, also in the pressure vessel. The coolant also acts as a moderator. Reactivity is controlled by water temperature variation, control rods, and burnable poison in the fuel assemblies. In Fig. 3, each fuel assembly comprises fuel pins 21a of uranium oxide and poison pins 21b of zirconium boride in a hexagonal shroud 18 within which the coolant is confined. Y-shaped control rods 31 are positioned in the spaces 42 between adjacent fuel assemblies, and coolant also passes through these spaces. The abutment ribs 39 are welded to the shrouds 18 and have extensions which guide the control rods.