baber/WOPTO huggingface dataset:
Patent GB-507589-A (GB)
Title: Improvements in or relating to secondary emissive electrodes for use in electron multiplier tubes and other electron discharge tubes
IPC: H01J1/32
Filed: 1937-12-13
Abstract: 507,589. Electrode materials; colloidal sols. SIEMENS & HALSKE AKT.-GES. Dec. 13, 1937, No. 34470. Convention date, Dec. 11, 1936. [Class 39 (i)] [Also in Group III] A secondary-electron-emissive material consists of one or more of the sulphides, oxides or selenides' of.the alkaline earth metals mixed with not more than 0À1 per cent of a finely divided heavy metal such as copper, bismuth, lead, manganese, nickel or antimony. The material is similar in composition to known Lenard phosphors, but with two or three times as much heavy metal. Preferably, there is added not more than 10 per cent of a fusible flux, for example lithium, sodium or potassium phosphate, sodium or potassium chloride or magnesium, sodium or calcium, fluoride or mixtures of these ; if the alkaline earth oxide is added as hydroxide, the flux may be dispensed with. The emissive material may contain up to 50 per cent of alkaline earth sulphates, carbonates or nitrates as diluents. The mixture is prepared in aqueous or alcoholic solution, any insoluble compounds being ground up or precipitated so as to be capable of suspension or reduced to colloidal form; for example, a colloidal solution of calcium carbonate is prepared by passing carbon dioxide through a suspension of calcium oxide in methyl alcohol. The layer may be, not more than 10<-4> mm. in thickness, preferably applied to a base of nickel or iron sintered on to the electrode in hydrogen.
Patent GB-1508830-A (GB)
Title: Flotation cushions
IPC: A47C27/10
Filed: 1976-08-17
Abstract: 1508830 Mattresses &c OLIVELARK Ltd 17 Aug 1976 [20 Aug 1975] 34523/75 Heading A4M A mattress, cushion or like pad comprises an envelope formed by upper and lower, flexible, substantially inextensible panels 10, 12 united by a peripheral girdle 14, the envelope enclosing three superposed compartments 16, 18, 20, the first compartment 16 containing a flexible, thermally insulating material 17, e.g. foam plastics or glass fibre, the second 18 being filled with a liquid medium 26, and the third 20 being inflatable with gas, e.g. air, the third compartment 20 having its upper and lower walls 12, 13 and 28, 29 sealed to the upper and lower edges of the girdle and also to each other at one or more intermediate points over their surfaces. The liquid medium 26 may be a viscous gel, e.g. an aqueous solution of sodium carboxymethyl cellulose, and may contain an anti-bacteria compound. The third compartment 20 may be sub-divided into 2 or more sub-compartments which may be separately inflatable through non-return valves 32 or which may be inter-connected through restricted air passages.
Patent GB-605380-A (GB)
Title: Improvements in or relating to electric control switches
IPC: G05G9/047
Filed: 1945-12-20
Abstract: 605,380. Retractive switches. WADSWORTH, E., and LOWE (CRANES), Ltd., J. & H. Dec. 20, 1945, No. 34608. [Class 38 (v)] A multiple circuit-controlling switch has a control-member 7, 9 movable radially about a ball and socket joint 4, 6, to close any one or more of a number of pairs of contacts, being biased to its central-position by a compressionspring 11 bearing against a slidably-mounted domed collar 10. When one of the spring- plungers 18 is moved by a flanged-disc 12 carried by the control-member, a bridging- contact 23 slidable on the plunger is moved by a spring 22 away from contacts 24 into engagement with contacts 15. The disc 12 can be moved diagonally so as to operate two plungers simultaneously. 25 is a position-indicator.
Patent GB-349040-A (GB)
Title: Apparatus for the rapid filling of vessels especially for charging dry battery cells with electrolyte
IPC: H01M6/08
Filed: 1929-11-13
Abstract: 349,040. Reciprocating-cylinder pumps. SCHMIDT, W., 2, Gausstrasse, Obersch÷neweide, Berlin. Nov. 13, 1929, No. 34704. Convention date, June 12. Void [Published under Sect. 91 of the Acts]. [Class 102 (i).] Tn apparatus for the rapid filling of vessels, especially for charging dry battery cells with electrolyte, a glass plate c provided with a number of open end cylinders d is moved to and fro, by a rocking lever f, on the surface of a second glass plate b, fitted closely in the bottom of a storage vessel a and provided with a number of vertical holes k. Pistons e reciprocated by a mechanically operated lever g and link i allow the inflow of the liquid from the tank, and cause its discharge through openings k.
Patent GB-389584-A (GB)
Title: Preparation of printed sheets suitable for copying
IPC: B41L1/00
Filed: 1931-12-16
Abstract: 389,584. Security paper. BLITZ, H., 27, Avenue Victor Hugo, Paris. Dec. 16, 1931, No. 34823. [Class 96.] Paper, cardboard, cloth, &c. for book-keeping, cheques, railwaytickets, &c. is given in parts such as C<3> one or more distinctive colours such as by water colour, wax, gelatine, or fatty ink, and over the whole or over the coloured parts of the front surface is applied a film of an opaque white &c. masking the ground colouring and of a material detachable by shock or pressure as by typing or tracing with a style, pencil, pen, agate, &c. ; thus each sheet of a pack may receive a copy of all or of selected parts only of matter recorded on the uppermost sheet. If the colour on a sheet is of a wax or fatty ink it may also mark the sheet immediately above it, thereby giving additional security of the authenticity of documents. The opaque film may comprise zinc stearate with linseed oil or vegetable or mineral wax. Specification 263,850, [Class 100 (ii), Printing processes &c.], is referred to.
Patent GB-390264-A (GB)
Title: An improved method of, and means for, preserving perishable substances
IPC: B65B25/00
Filed: 1931-12-16
Abstract: Foodstuffs, e.g. cereals and other perishable products, are preserved against attack by weevils and other vermin by enclosure in airtight bags or sacks of the valve type within which are enclosed means for absorbing or consuming the oxygen of the air contained therein.  The bags or sacks are made by the multiwall process or by winding a sheet of paper &c. in coil form, the ends of the sheet being secured to the interior of the inner lap and the exterior of the outer lap of the coil, the transverse ends being closed.  The oxygen-removing means may consist of an oil such as linseed or maize oil or a mixture of such oils, the oils being employed alone or emulsified in a suitable vehicle or soaked into an absorbent, or of a slowly combustible material such as vegetable fibre soaked with potassium or sodium nitrate enclosed in a perforated container of asbestos or other incombustible material and ignited.  Most of the air may be exhausted mechanically from the bag &c. after filling.
Patent GB-1096914-A (GB)
Title: Electrical contact arrangement
Inventor: HOEL HANS
IPC: H01H50/64
Filed: 1963-09-04
Abstract: 1,096,914. Retractive switches; attracted armature relays. ENGLISH ELECTRIC CO. Ltd. Sept. 3, 1964 [Sept. 4, 1963], No. 34957/63. Heading H2B. A switch comprises a movable contact member, an operating member movable in a direction normal to the direction of operating movement of the contact member, and an operating link with one end pivotally attached to one member and the other end settable adjustably against two spaced stops on the other member to make the switch normally open or normally closed. Operating member 15, movable manually or electromagnetically, has a slot 16 with ends 21, 22, providing the stops for the adjustably settable operating link 17 attached to a contact spring 14 engageable with a contact spring 11, spring 14 being biased away from spring 11. Spring 14 may be oppositely biased and means (not shown) be provided for securing the pin 20 of link 17 against one of the stops. When operated electromagnetically, several pairs of contact springs may be operated conjointly (Figs. 2, 3, not shown), some being normally open and some normally closed as desired.
Patent GB-425028-A (GB)
Title: Improvements in and relating to variable pitch propellers
IPC: B64C11/36
Filed: 1934-12-06
Abstract: 425,028. Airscrews. DUSSI, R., 23, Birinci Vakif Han, Istambul. Dec. 6, 1934, No. 35050. Convention date, Dec. 6, 1933. Addition to 423,130. [Class 114] The variable-pitch airscrew described in the parent Specification is modified by the'provision of weights 60 on the rods 25 which move axially in the blades, and by the provision of brake surfaces 67 on the screws of the centrifugal weights 37 whereby the latter can be locked by the brake arms 65 when the rod 61 is moved to disconnect the automatic gear on motion of the hand control rod 38. Instead of detents, disconnection is effected when the squared end 35<1> on the rod passes out of the corresponding cavity in the sleeve 36, whereupon the rod 61 is able to move under pressure of the spring 62 and pull the lever 64 into the braking position.
Patent GB-776463-A (GB)
Title: A semi-conductive body with a negative temperature coefficient of resistance
IPC: H01C7/04
Filed: 1954-12-03
Abstract: 776,463. Temperature-sensitive resistors. LICENTIA PATENT-VERWALTUNGS-GES. Dec. 3, 1954 [Dec. 7, 1953], No. 35074/54. Class 37. Temperature-sensitive sintered-oxide semiconductor elements are formed from 50 per cent FeO.Fe 2 0 3'  between 23 and 32 per cent ZnO.Fe 2 0 3  and the remainder NiO.Fe 2 0 3 . A temperature coefficient of resistance of 64.2 per cent per degree C may be obtained. Other values can be selected by varying the proportions. The elements can be used for controlling relays of normal sensitivity directly.
Patent GB-361116-A (GB)
Title: Improvements relating to telegraph perforators
IPC: H04L17/08
Filed: 1930-11-21
Abstract: 361,116. Punching telegraph tapes. IMPERIAL & INTERNATIONAL COMMUNICATIONS, Ltd., HIGGITT, H. V. and WARBURTON, F., Electra House, Moorgate, London. No. 35113. [Class 31 (ii).] Selective punching machines.- In keyboard machires for punching telegraph tape in which depression of a key rotates a shaft carrying cams for moving the punches, feeding the tape, and restoring the parts, the tape 24 is fed by a pin wheel 48 vertically through a stationary die block carrying nineteen punches 1, 2 in two vertical columns. Depression of a key 11 raises a yoke 12 and actuates a rod 14 to release the pawl of a one revolution clutch which connects a cam shaft to a constantly moving shaft. Punch selection. The cam shaft carries a punching cam 3 operating a lever 6 on a pivot 7. The lever 6 carries pivots 17 for intermediate members 18, 18a engaging selector combs 20 for the punches. Depression of a key 11 swings an arm 22 about a pivot 23 into the path of the tooth 20b to lock one of the combs. The cam 3 then swings the ever 6 and swings the member 18 associated with the locked comb to operate the selected punch. A punch retracting bar 26 engages the punches and is moved by a member 18e to free and to retract the punches. In a modification, Fig. 8, the cam 3 operates a lever 6 carrying intermediate members 18 one end of which is blocked by combs 20 locked by arms 22. In a further modification, Fig. 7, the cam 3 actuates a lever 6 connected to a toggle 23. One arm 71 of the toggle operates the punch when the other arm 70 is held by a comb 20 locked by a lever 22. Paper feed. Depression of a key 11 swings the corresponding arm 22 to lock spacing comb 30. The selected comb 30 is free to slide under action of a spring 31 so that its end is beneath a projection on a rack 37. A projection 40 on the lever 6 rocks a lever 41, to disengage a slidable pinion 45 from the rack and it falls until stopped by the comb. After the punching operation the pinion 46 is reengaged and a paper cam feed 49, Fig. 5, through rods 51, 55 raises the rack the selected amount to turn the pinion 45 and pin wheel 48 engaging the centre holes of the tape. In order to prevent the tape from dragging and tearing at the feed holes a cam 56 feeds a loop of tape corresponding to the maximum feed. The cam 56 rocks a lever 57 on a pivot 58 and operates a bell crank 60 to thrust a roller 61 against the tape. The punches hold one end of the tape, and tape equal to the maximum feed is withdrawn for the next operation. Combination key. To perforate two characters with the space eliminated, a combination key 11a, on depression, interposes a blade 68 against a rack 37 above the combs 30. When the rack 37 drops the blade is forced above it to prevent the cam 49 from reaching its top position to eliminate the space when the second key 11 of the combination is depressed. Means may be provided for latching the keys until the punching operation is complete and for preventing simultaneous depression of a plurality of keys. Specification 24624/99, [Class 31, Cutting &c.], is referred to.
Patent GB-410542-A (GB)
Title: Improvements in satchels, music cases and the like
IPC: A45C13/36
Filed: 1932-12-12
Abstract: 410,542. Satchels &c. BUDD, A. E., 166, Glenarm Road, Clapton, London. Dec. 12,1932, No. 35140. [Class 133.] Carrying- handles, shoulder straps, &c. 3 are attached to loops 4 encircling the metal or other rigid re-inforcing bars 1 of satchels, music cases, rucksacks &c. and projecting through slits formed in the leather or other covering strips 2 by which the bars are attached to the articles.
Patent GB-619210-A (GB)
Title: Improvements in a t-shaped brake shoe and method of making the same
IPC: F16D65/08
Filed: 1946-11-27
Abstract: 619,210. Making brakes. BURGESS, A. F. (Wellman Co., S. K.). Nov. 27, 1946, No. 35179. [Classes 83 (ii) and 83 (iv)] Rolling; powder metallurgy.-A T-section vehicle brake shoe is made by rolling a compound, flat strip 2, having one sintered surface 3, into curved form, with the sintered face convex, and welding an arcuate web 4 to the concave face thereof. The strip comprises a steel backing 2, copper or nickel-plated to .0002 inch, with a moulded, pressed briquette sintered thereon at 1500‹ F. and 100 lb. per sq. inch pressure. The briquette comprises 3 to 12 per cent molybdenum sulphide and an example contains 8 per cent tin; 4 per cent iron; 5 per cent lead; 3 per cent silica; 5 per cent carbon; 8 per cent molybdenum sulphide and 67 per cent copper by weight, and is suitable for high speed vehicles. A composition containing no molybdenum is suitable for low braking speeds, and is sintered at 1450‹ F. The sintered surface may be # inch thick, and the backing “ inch thick, and the curving is done by rolls which progressively elongate the sintered surface as disclosed in Specification 595,920. The web 4 may be a stamping, with holes for pivots, operating members, etc.
Patent GB-1146062-A (GB)
Title: Improvements in a refractory roof and method of erecting it
IPC: F27D1/02
Filed: 1966-08-08
Abstract: 1,146,062. Suspended furnace roofs. GENERAL REFRACTORIES CO. 8 Aug., 1966 [27 Dec., 1965], No. 35411/66. Heading F4B. Magnesia, chrome magnesia, or magnesia chrome refractory roof bricks 32 are suspended by wire hangers 61 from sets of corset plates 37, provided with supporting feet 41, which may have lateral openings therein. Aligned recesses 42 are formed in the opposed ends of adjacent corset plates, which overlap, and holddown beams 44 are inserted in these recesses to rest on their bottom surfaces 45. The beams 44, which are supported by pipes 52 from crossbeams 51 are thereby spaced above the cold ends of bricks 32, to allow cooling air to circulate. Tension members 55 are then secured across the tops of the hold-down beams 44, between adjacent corset plates 37, which together with the bricks 32 are thereby prevented from rising or falling. In modifications (Figs. 14 and 15) rows of sprung arch bricks supported from skewbacks may be inserted between the rows of suspended bricks. At the end of a furnace campaign the roof may be replaced by cutting the tension members 55 causing the old bricks and the corset plates to fall on to the furnace hearth, the bricks for the new roof being supported on temporary forms 30 extending from the skewbacks 31 until erection of the supporting structure is completed. The roof may be applied to open hearth furnaces, when the corset plates extend transversely and the holddown beams longitudinally of the furnace, or to circular electric hearth furnaces.
Patent GB-467902-A (GB)
Title: Improvements in and relating to methods of separating substances from a stream of liquid, and apparatus therefor
IPC: B03B5/62
Filed: 1935-12-21
Abstract: 467,902. Gravity-separation apparatus. PRUSS, M., and BLUNK, H. Dec. 21, 1935, No. 35482. Convention date, Nov. 18, 1935. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 22, 1936.] [Class 111] [Also in Group II] Heavy substances are separated from a stream of liquid, e.g. waste waters, of varying quantity by reducing the velocity of flow of the liquid as it flows vertically through one or more zones of a separating apparatus comprising a plurality of zones having weirs or overflows situated at different heights over which the liquid flows to a discharge channel, the inflowing current of liquid being caused to flow over and closely above the surface of the settled solids so as to form eddies by which the lighter solids are washed out from the settled solids. A separating apparatus, Fig. 1, comprises concentric zones 5, 6, a lateral inlet pipe 3 terminating in a guide piece 9, an overflow channel 8 leading to a discharge passage 2, and an air siphon 10 for removal of deposit. In a modification, Fig. 2, the inlet pipe 3 is central and a plurality of zones 5, 11, 12, 13 are provided. In a further form, Fig. 3, the inflowing liquid enters at 1 and solids deposit at 19, a guide piece being provided at 9. If the flow is a minimum, all the liquid passes to the washing chamber 18: otherwise, liquid falls over the weirs 22 into channels 23 leading to the discharge 2. The velocity in the zone 18 is kept constant by maintaining a uniform difference in level between the liquid in the inlet channel 1 and outlet 2 ; this may be effected by automatically varying the height of the weir 20 by connection thereof to a counterweight 27 also connected to a float 30 : the weir is connected to the counterweight rope 25 by a manually adjustable screw 24. The Specification as open to inspection under Sect. 91 comprises also a further form, Fig. 4 (Cancelled), in which an intermediate bottom 32 is provided for the collection of the deposited solids, said bottom having an oscillating or rotary scraper 31 to push the solids into a collecting chamber 33 through which the liquid stream does not flow. Alternatively, the bottom 32 may be rotatable. This subjectmatter does not appear in the Specification as accepted.
Patent GB-784194-A (GB)
Title: Local anesthetic of the dialkylamino-acetoanilide series
IPC: C07C237/00
Filed: 1955-12-09
Abstract: The invention comprises N-(diethyl)-amino-aceto - (2 - methyl - 6 - ethyl anilide) and its salts with non-toxic organic acids or mineral acids, particularly its mono-phosphate.  The base may be prepared (1) by reacting 2-methyl-6-ethylaniline or a salt thereof with diethylamino acetic acid, or its anhydride, ester, halide or amide; (2) by reacting diethylamine with 2-methyl-6-ethyl-acetanilide substituted in the acetyl group with a halogen atom or an alkoxy-, aralkoxy- or aryloxy group; or (3) by diethylation of 2 - ethyl - 6 - methyl - amino-acetanilide with, for example, the sulphuric acid, aryl-sulphonic acid- or hydrogen halide ester of ethanol, preferably in presence of an acid-binding condensing agent.  In an example, chloracetyl chloride and 2-methyl-6-ethyl-aniline in glacial acetic acid and sodium acetate give 2 - methyl - 6 - ethyl - chloroacetoanilide, which on refluxing with diethylamine in ethanol gives the compound of the invention, the mono-phosphate of which is prepared by reaction with alcoholic phosphoric acid.
Patent GB-836071-A (GB)
Title: Improvements in or relating to perforating apparatus
IPC: G06K5/02
Filed: 1957-11-15
Abstract: 836,071. Type printing telegraphy. HANDLEY, J. Nov. 14, 1958 [Nov. 15, 1957], No. 35579/57. Class 40 (3). In a perforating apparatus there is provided means for reading a signal combination perforated in a tape or other medium which is operated by the action of the perforating means in perforating a succeeding signal combination. A first embodiment, illustrated in the Figure accompanying the Provisional Specification (part shown), comprises a set of contact members 5 which, if there is a perforation in the tape, make contact with an extension 7 of a die 1 each time the die is raised in order to perforate a subsequent signal combination in the tape, a suitable combination of punches 8 being chosen for this purpose. In a second embodiment, Fig. 2, of the drawing accompanying the Complete Specification, the contact members 5 are modified by a feeler 12, and make contact with a contact-bar 11. The extension 7 of the die 1 is provided with apertures into which the feelers may fall and, during a perforating operation, a preceding signal combination will cause the contacts to open if there is no perforation. In the case of a continuously reciprocating perforator, to remove the possibility of the feelers 12 wearing holes in the tape, means is provided for raising the feeler-contact bar assembly clear of the tape. The Provisional Specification states that the perforator may use a stationary die and moving punches.
Patent GB-526234-A (GB)
Title: Manufacture of ortho-dinitriles of cyclic ortho-dicarboxylic acids
IPC: C07C255/51
Filed: 1938-12-07
Abstract: 526,234. Aluminium and zirconium salts. SOC. OF CHEMICAL INDUSTRY IN BASLE. Dec. 7, 1938, Nos. 35669 and 35670. Convention dates, Dec. 14, 1937, and Nov. 10, 1938. [Class 1 (iii)] [Also in Group IV] Zirconium phosphate : 30 parts of zirconium nitrate and 10 parts of phosphoric acid are mixed hot and the precipitate is filtered, washed and dried. Aluminium borate: 40 parts of crystallized aluminium chloride are dissolved together with 20 parts of boric acid in 400 parts of water and the solution heated to boiling and mixed with ammonia ; the precipitate is filtered, washed and dried. Aluminium magnesium silicate : 15 parts of crystallized aluminium chloride and 15 parts of crystallized magnesium nitrate are dissolved in 300 parts of water and the boiling solution is mixed with one of water glass of 10‹ BÚ until the solution is neutral. The precipitate is filtered, washed and dried. Aluminium arsenate : 40 parts of crystallized aluminium chloride are dissolved in hot water and to the hot solution is added a solution of sodium arsenate of 4 per cent. strength. The precipitate is filtered, washed and dried. Aluminium silicate : aluminium chloride and sodium silicate solutions are mixed hot and the precipitate filtered, washed and dried.
Patent GB-496845-A (GB)
Title: Improvements in or relating to modulated carrier wave transmitters
IPC: H03C1/62
Filed: 1937-12-23
Abstract: 496,845. Modulating systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., MOODEY, L. T., and STAINES, C. R. Dec. 23, 1937, No. 35676. [Class 40 (v)] A modulation system of the floating carrier type employs a valve V having at least three grids, one of which, G2, acts as a screen. Carrier frequency from terminals CT is applied to grid G1, and grid G3 on the other side of the screen is connected to the cathode through resistance R3 a bias source B2, both shunted by condensers C2, C3, and condenser C5. Modulation potentials are applied at terminals MT across the series circuit formed by R3 and B2 and a unidirectional potential, obtained in any convenient manner, varying in dependence upon the modulating potential level is applied from terminals FCT across condenser C5. Output is taken from the carrier frequency tuned circuit C1, L1. In a modification, Fig. 2 (not shown) the control potential only is applied to grid G3 and the modulation is applied in the anode circuit. The floating carrier control potential may be obtained from the modulation potentials after amplification by means of a full-wave rectifier, Fig. 3 (not shown), the resultant potential being amplified in a D.C. amplifier whose anode resistance is connected across the terminals FCT.