baber/WOPTO huggingface dataset:
Patent GB-790353-A (GB)
Title: Acoustic diaphragm and method of construction
IPC: H04R7/12
Filed: 1956-07-16
Abstract: 790,353. Moulding acoustic diaphragms. HAWLEY 'PRODUCTS CO. July 16, 1956 [July 27, 1955], No. 21882/56. Class 87(2). [Also in Group XXXIX] In a method of moulding a diaphragm a piece of cloth is impregnated with a thermosetting resin, preferably in the form of a varnish, and is then placed in a combination moulding and embossing die 8, of which the male member 9 meets the female member 10 in that part of the die which forms the central portion a of the diaphragm, but is spaced therefrom in that part which shapes the peripheral portion b. Sufficient pressure is applied to cause the resin in the portion a to flow and fill the interstices of the fabric, whereas in the portion b the diaphragm is merely shaped or embossed and the resin does not flow. The pressure may be applied by a conventional moulding press, preferably a toggle press, the die being heated by an electrically heated plate bolted thereto, or by a steamheated press platen.
Patent GB-1248899-A (GB)
Title: Testing fluid-filled containers for leaks
Inventor: AHNSORGE J
IPC: G01M3/02
Filed: 1970-05-06
Abstract: 1, 248, 899. Testing containers for leaks. HANS SCHWARZKOPF G.m.b.H. May 6, 1970 [May 6, 1969], No. 21894/70. Heading G1S. Aerosol cans 5 are placed on an insulated conveyer belt 11 provided with side rails 11b and passed through a screened high frequency heating chamber having a water cooled high frequency pipe coil 1 which heats the cans to around 50‹C. From the heater the cans pass to a leak detectors 14, 16, Fig. 3, and light barriers and photo-cell arrangements 17, 12 which activate the detectors alternately. If a can is leaking then one of the suction hoses 14a, 16a samples the leak and deposits it on to the surface of an electrode which emits a signal and operates an electro-magnetic or compressed air rejector 40. At the same time the signal operates air supplies 19, 19a to bring the atmosphere in the passage for the cans back to normal. The electrode is re-juvenated by burning off the leak deposit.
Patent GB-1071590-A (GB)
Title: Azo dyestuffs
Inventor: WUNDERLICH HERMANN
IPC: C09B27/00
Filed: 1966-05-18
Abstract: Mono-azo dyes of general formulae <FORM:1071590/C4-C5/1> in which R1 is hydrogen, alkyl or aryl and R2 is hydrogen, alkyl or aryl or a carbalkoxy group with 1-4 carbon atoms in the alkyl group and R1 and R2 together may form a benzene or a naphthalene nucleus which may be substituted and R3 is a radical of the naphthalene series in which the hydroxyl group is in a -position and the azo group in b -position of the naphthalene nucleus, the two formulae being tautomeric, are prepared by reacting a hydrazine compound of formula <FORM:1071590/C4-C5/2> with one mole of an o-quinine compound of the naphthalene series, all starting components being free from sulphonic and carboxylic acid groups.  The dyes are prepared preferably in weakly to strong acid aqueous or aqueous organic media at room temperature to boiling temperature.  The dyes give blue shades in nickel-modified polypropylene.ALSO:Metal modified polypropylene fibres are dyed with azo dyes of formulae <FORM:1071590/D1-D2/1> in which R1 is hydrogen, alkyl or aryl, and R2 is hydrogen, alkyl or aryl or a carbalkoxy group with 1-4 carbon atoms in the alkyl radical, and in which R1 and R2 may together form a benzene or naphthalene nucleus which may be substituted, R3 is a radical of the naphthalene series in p  which the hydroxyl group is in the a -position and the azo group in the adjacent b -position the dyes being free from sulphonic and carboxylic acid groups.  The above formulae are tantoneric.  In example 1 nickel modified polypropylene is dyed at pH 5-6 whilst boiling for 1 hour giving a blue shade.
Patent GB-884887-A (GB)
Title: Preparation of alkyl amines and chlorides
IPC: C07C17/093
Filed: 1960-06-24
Abstract: Chloramine is reacted with an alkylaluminium compound within a temperature range of -30 DEG C. to 50 DEG C. in the presence of an inert organic solvent and under an inert gas, and the resulting primary amine and alkyl chloride recovered separately from the mixture. Trimethyl, triethyl, tripropyl, tributyl, tri-n-octyl, and tridodecylaluminium compounds, or compounds of general formula AlRCl and R2AlOR (where R's represent alkyl radicals) may be used, and the solvents include aromatic or aliphatic hydrocarbons or ethers. Examples describe the reaction of chloramine in ether under nitrogen with trioctylaluminium, and the separation and recovery of 1-chloro-n-octane and 1-amino-n-octane, respectively, by the addition of concentrated hydrochloric acid, and by neutralisation with sodium hydroxide followed by extraction.
Patent GB-437546-A (GB)
Title: Improvements in or connected with sockets used for electrical connections
IPC: H01R13/11
Filed: 1934-07-31
Abstract: 437,546. Thermionic valve pins and holders. REID, L. H., 28, Victoria Street, Westminster. July 31, 1934, No. 22309. [Class 39 (i)] [See also Group XXXVI] A valve pin or socket is formed with one or more triangular tongues cut longitudinally from the wall of a tubular contact so as to remain attached at one end only, the tongue being then bent to press against the co-operating contact. The tongue 5 is formed by two straight cuts 4, 4<a>, and is attached to the socket wall 1 either at the mouth 1<a> or at the base 1<b>. Where two tongues are provided, Fig. 7, they may be attached at the same or at opposite ends. A reinforcing spring 6, 6<a>, Fig. 8, may be attached by a ring or clip to the socket. In the case of a plug the bend 5b formed in the tongue is reversed to project outwardly. In mounting the sockets in a flat base to form a valve holder the mouth 1<a> is passed through the base and spun or riveted over.
Patent GB-162222-A (GB)
Title: Improvements in or relating to fastenings for necklaces, necklets and the like
IPC: A44C5/20
Filed: 1920-07-29
Abstract: 162,222. Lillicrap, F. J. July 29, 1920. Stud-and-slot fastenings.-Relates to a necklet or like fastening of the type in which shoulders on a male part are adapted to pass through a slot in the end of a socket part, and, after rotation, to be spring-pressed into engagement with internal slots in the socket end, and consists in forming the socket end of two discs, assembled flatways together, the inner one having a cruciform slot and the outer one an oblong slot in register with the transverse part of the cruciform slot. The socket part 1 of the fastening, provided with the spring 3, has its open end partially closed by discs 5, 6, the inner disc 6 having a cruciform slot 8 and the outer disc 5 an oblong slot 7, the two discs being positioned as shown in Fig. 5. The male part is preferably formed with an oblong shank 9, having shoulders 11 which engage, after insertion and rotation in the socket 1, with the cross part of the slot 8 indicated in dotted lines in Fig. 5. If desired, the spring 3 may be fitted with a small plunger to co-operate with the extremity of the male part, and a stop or stops may be provided in connection with the disc 6 or socket 1 to limit the rotation of the shank 9 in the part 1 during the engagement of the parts.
Patent GB-169577-A (GB)
Title: Improvements in or appertaining to fire places
IPC: F24B1/193
Filed: 1920-07-29
Abstract: 169,577. Braddock, H. W. July. 29. 1920. Open fire-places; fuel holders.-In a fire-place of the type in which the grate is positioned at or below the level of the hearth and isprovided with undulations to facilitate the circulation of air, the grate is built up of sections to permit replacement of a worn section and also of adjustment to fit fire-places of different widths. Fig. 2 shows, in plan, a. grate built up of three rectangular sections a<1>, each provided with a ridge c, and two tapering end sections a<2>, each having a groove d, the parts forming, when assembled, as shown in Fig. 3, an imperforate grate with an undulating surface. The ridges c and grooves d are inclined towards the back of the grate where a transverse well e is provided to collect ashes which slide down the inclined surface. The front of the grate is formed by a block x which may be of any desired height..
Patent GB-338931-A (GB)
Title: Automatic photographing machine
IPC: G03B17/53
Filed: 1929-07-22
Abstract: 338,931. Ocur Metallbettenfabrik Ges. April 23, 1929, [Convention date]. Coin-freed apparatus. - In apparatus for exposing a sensitized strip and developing it as a positive, the developing apparatus is continuously running and the camera is driven on the insertion of a coin by means of a clutch which is engaged for a predetermined period allowing for the taking and completion of the photograph. The motor g, Fig. 1, runs continuously, and drives the developing and drying apparatus d, i. On inserting a coin in the slot h, an electromagnet 5, Fig. 5, is energized, thereby rocking the pivoted armature 8 and moving a pin 10, Figs. 4 and 5, extending through a stationary ring 18, to depress a spring clutch pin 11 housed in a clutch mount 16 on the shaft 15. The pin engages a recess 12 in a coaxial wheel 13 freely mounted on the shaft 15 and continuously driven direct from the motor. The driven shaft 15 is thereby rotated during one complete revolution of the driving wheel 13, when the spring 11 re-enters the slot in the ring 18, the armature now being free. The camera mechanism is driven from the shaft 15 through gearing 14, 19, 20; Figs. 4 and 7. The sensitized band is fed from the spool housing 24 by feed rollers 22, 23, Fig. 6, the former being gapped and directly mounted on the driven shaft 21. A driven contact disc 28 wipes over a contact 31 to switch on lamps 34, Fig. 1, illuminating the sitter and a lamp 69 illmuinating the peripheral number on a weightrecording drum 68, and also to operate the camera shutter. Thereafter the end 40<a> of a pivoted arm 40 of the cutting knife mechanism 43 springs back over the notch 39<a> of a driven cam disc 38, and the knife 44 is impelled by the spring 45 to sever the exposed strip, which drops down the shoot c to the developing and drying apparatus, from which it is passed to the delivery shoot k. Specification 337,029 is referred to.
Patent GB-816539-A (GB)
Title: An improved resilient last
IPC: B29D35/00
Filed: 1957-07-16
Abstract: 816,539. Resilient lasts. CAPDEVILA, G. M. July 16, 1957, No. 22563/57. Class 87(2). This last, for use with machines for vulcanizing soles of rubber or other vulcanizable material to footwear uppers, has a main body 10 with removable part 11 to facilitate fitting into and withdrawing from a shoe, a removable member 31 attached to the bottom of the main body, and a resilient member fitted in peripheral recesses formed at the junction of the main body 10 and the removable member 31, either wholly in one or'the other or partially in both, and adapted to support a shoe upper in the zones where the lateral compressor members of the vulcanizing press bear during the vulcanizing operation, The body 10 has lateral recesses 23 and two transverse slots 25 which open into the recesses 23, and its toe portion is completely cut away at the surface 24. The resilient member has two lateral parts 26 which fit in the recesses 23, two integral cross members 27 which fit in the slots 25, and an integral toe portion 28 formed to abut the surface 24. The member 31 is a metallic plate attached to the body 10 by screws 35. The heel portion 11 has a recess 37 which receives a resilient member 38 having an integral cross member 39 which is received in a transverse groove 40. It is held in position by means of a plate 391. The body 10 and heel portion 11 are secured together by a bolt 16 having a bayonet head 20 which is guided through a hole 18 in the body 10 downward into the heel portion through a hole 19 having a cross-section corresponding to that of the head 20, the latter. being engaged with a corresponding bayonet housing 17.
Patent GB-382604-A (GB)
Title: Improvements in or relating to the rolling of seamless tubes
IPC: B21B19/06
Filed: 1932-08-12
Abstract: 382,604. Rolling tubes. WIDUCH, W., 3, Wielkie Hajduki, Upper Silesia, Poland.-(Assignee of Rexin, W. ; 33, Cleverstrasse, D³sseldorf, Germany.) Aug. 12, 1932, No. 22586. Convention date, Aug. 14, 1931. [Class 83 (iv).] Skew-rolling mandrel carriages.-A hollow billet b is reduced to a tube by rotating it and feeding it forward between skew rolls a which are free to rotate, or may be driven. The billet b mounted on a mandrel d is gripped in a chuck &c. e rotated by a motor f, and the mandrel carriage &c. is fed forward by a screw h rotated by another motor g. The roll may be built up of independent conical rings 1-7 and a cylindrical part a which may be driven to give a polish to the tube. The rolls may be fed over the tube instead of the tube being fed into the rolls.
Patent GB-301122-A (GB)
Title: Improvements in attachments for floor treating machines
IPC: A47L11/164
Filed: 1927-08-30
Abstract: 301,122. White, A. E., (Finnell System Inc.). Aug. 30, 1927. Floors, cleaning. - A floor-cleaning machine comprises a brush holder 1 formed with slots 6 for engagement with hooked lugs 13 projecting from a disc 12 which is adapted to carry sandpaper, polishing cloths, or other materials for treating the floor. In the construction shown, the brush holder is of annular form and is provided with springs 11 adapted to press three brushes against the flange 8, which is grooved internally for engagement with the outer edges of the brushes. The disc 12 is provided with a felt pad 14 and with springs 15, polishing cloths or other cleaning material being passed over the pad and held in place by the ends being gripped underneath the springs.
Patent GB-998897-A (GB)
Title: Apparatus for the heat treatment of textile materials
Inventor: GREEN HAROLD HURDLEY
IPC: D06C7/00
Filed: 1961-06-27
Abstract: 998,897. Heating textiles. DUNLOP RUBBER CO. Ltd. June 12, 1962 [June 27, 1961], No. 23141/61. Heading F4U. A fluidized bed, e.g. for the heat treatment of textile materials comprises a container 1 having a base and means for supplying gas to said base such that regions adjacent at least one side 21 or 22 of the base have a greater gas supply pressure than that supplied to the central region of said base. As shown, fluidising gas enters compartments 16, 16a of galleries 14, 15 from passageways 17, 18 through orifices 29 in removable bushes 28. The orifices 29 in the compartments 16a adjacent sides 21, 22 are larger in crosssectional area than orifices 29 in compartments 16, e.g. the diameter of orifices in compartments 16a may be <SP>7</SP>/ 8  inch when the diameter of orifices in compartments 16 is <SP>5</SP>/ 8  inch. Any sheet fabric to be treated enters the container by slit 3 between galleries 14, 15. Galleries 14, 15 communicate with the material to be fluidized via the porous floor (Fig. 3, not shown).
Patent GB-1531633-A (GB)
Title: Heterojunction photodetectors
IPC: H01L31/109
Filed: 1976-06-04
Abstract: 1531633 Heterojunction photodetectors WETERN ELECTRIC CO Inc 4 June 1976 [5 June 1975] 23199/76 Heading H1K A heterojunction photodiode for operation in the avalanche mode comprises a monocrystalline, e.g. gallium arsenide, substrate carrying superposed epitaxial layers of opposite conductivity types each consisting of at least ternary A III B V  compound material, the upper layer being of such composition and thickness as to transmit incident radiation which the underlying layer substantially completely absorbs. To reduce noise the doping of the absorbing layer should be much less than that of the window layer so that the depletion layer of the junction develops therein, and its conductivity type that for which minority carriers have a lower ionisation threshold energy than majority carriers. In the described embodiments this is N-type when both layers are of indium gallium arsenide with differing In : Ga ratios, and P- type when they are of indium arsenide antimonide of differing As : Sb ratios. In one embodiment, Fig. 4A, the epitaxial layers 56, 57 are grown over a plurality of lattice matching layers in which the Ga : In ratio and donor doping decrease stepwise from layer to layer, and in the other, on a P-type substrate the layers, of gallium arsenide antimonide, are of progressively decreasing As : Sb ratio and acceptor doping. In both cases the layers 56, 57 may constitute a mesa surrounded by a guard ring of silica, and the electrodes consist of tinnickel-gold alloy on the substrate and a gold annulus on the window layer. The materials are preferably selected for response to the 1À06 Á infra-red radiation used in optical fibre communication systems.
Patent GB-532006-A (GB)
Title: Improvements in or relating to modulation systems
IPC: H03F1/07
Filed: 1939-08-11
Abstract: 532,006. Valve modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 11, 1939, No. 23213. Convention date, Sept. 30, 1938. [Class 40 (v)] A modulation system for radio and like signalling comprises a radio-frequency amplifier 3 feeding a constant carrier into the load 21 through a phase-inverting network 13, and a pair of auxiliary radio-frequency amplifiers 25, 27 respectively feeding in-phase and out-of-phase energy into the load 21 according to the sign of the modulating voltage applied to their grids. The carrier wave is fed directly to the grid of the valve 3 and through a phase-inverting network 67 and condensers 71, 73 to the grids of the valves 25, 27. Modulation is fed in phase opposition to the latter grids through the transformer 55, and while the anode of valve 25 is connected directly to the load 21, the anode of valve 27 is connected thereto through a phasereversing network comprising series coils 37, 39 and shunt condensers 41, 43, 45. In a modification (Fig. 2, not shown), the grids of the valves 25, 27 are excited in phase opposition by the carrier and their anodes are directly connected to each other and through a condenser to the load 21. Reference has been directed by the Comptroller to Specification 520,075.
Patent GB-721753-A (GB)
Title: Improvements relating to electromagnetically-operated step-by-step mechanisms
Inventor: HUMPHRIES HORACE EDGAR
IPC: H01H63/20
Filed: 1951-10-05
Abstract: 721,753. Ratchet gearing. SIEMENS BROS., & CO., Ltd. Sept. 26, 1952 [Oct. 5, 1951], No. 23233/51. Class 80 (3). In an electromagnetically actuated ratchet gear the armature 12 pivoted at 13 has an extension 14 carrying in addition to a driving pawl 15 a stopping pawl 16 engaging the teeth of the ratchet wheel 5 to prevent over-running of the wheel. The stopping pawl is of substantially U-shape and engages the longer flanks of the ratchet teeth by an outer side face in a trailing manner. A retaining pawl 22 also engages the wheel to prevent reverse rotation. Both the driving and stopping pawl may be of spring strip material, the stopping pawl preferably being thicker or backed by a reinforcing member. Alternatively the driving pawl may be pivoted and subjected to spring pressure and may carry the stopping pawl as an extension of rigid or spring form.
Patent GB-480604-A (GB)
Title: Improvements in or relating to the provision of hydrocarbons with distinctive colourings
IPC: C10L1/00
Filed: 1936-08-24
Abstract: Liquid or solid hydrocarbons are coloured by dissolving therein a colouring matter obtainable by condensing one molecular proportion of a cyanuric halide with 1-3 molecular proportions of one or more polynuclear aromatic compounds, such as hydrocarbons or heterocyclic compounds.  The products from 1 mol. of cyanuric chloride and 1 mol. of pyrene, phenanthrene, or chrysene colour benzene or benzine, a product from N-ethylcarbazole colours benzene, and products from perylene colour benzene, paraffin oil, and ligroin.ALSO:Liquid or solid hydrocarbons are coloured by dissolving therein a colouring matter obtainable by condensing one molecular proportion of a cyanuric halide with 1-3 molecular proportions of one or more polynuclear aromatic compounds, such as hydrocarbons or heterocyclic compounds.  In examples, 1 mol. of cyanuric chloride is condensed in presence of anhydrous aluminium chloride with (1) 1 mol. pyrene in benzene solution; (2) 1 mol. phenanthrene in benzene; (3) 1 mol. chrysene in a mixture of benzene and nitrobenzene, or alternatively with N-ethylcarbazole or perylene; (4) 1-2 mols. of perylene in carbon disulphide; and (5) 2 mols. of perylene in nitrobenzene.  It is stated that the products from 1 mol. of cyanuric chloride and 1 mol. of pyrene, phenanthrene or chrysene colour benzene or benzine, the product from N-ethylcarbazole colours benzene and those from perylene colour benzene, paraffin oil, and ligroin.
Patent GB-648877-A (GB)
Title: Improvements relating to filler caps and other closures
Inventor: MARCELL REGINALD CLAUDE
IPC: B64D39/00
Filed: 1948-09-03
Abstract: 648,877. Hook fastenings. NAPIER & SO N, Ltd., D. Sept. 3, 1948, No. 23258. [Class 44] [Also in Groups XVII and XXXIII] A fastening means for the closure of an aircraft fuel tank comprises a pri. mary lever carrying the closure and engaging a fixed pivot at 'one end, a secondary floating lever being pivoted to the free end of the primary lever and having a hook end projecting beyond the pivot to engage under a fixed pin, locking means being provided for retaining the other end of the floating lever in a position close to the primary lever. In the form shown a casting forming a seating 4 for a closure 5 is mounted about the opening of an aircraft fuel tank 1. Pairs of lugs 8 and 9 project upwardly from opposite sides of the casting. The closure consists of a cast disc 5 having lugs 13 on its upper side drilled for a pivot pin 14 under which passes a primary lever 15 in the form of a leaf spring having eyes 16 and 17 formed at its ends. The end 17 is pivoted to lugs 9. The secon. dary lever is formed by a cover 22 which is provided with a central web 23 and two outer webs 24 on its underside. The end 16 of lever 15 is pivoted to web 23 by a pin 20 the web being extended to form a hook 26 which engages under a pin 27 held in lugs 8. Pivoted to lugs 24 is a subsidiary cover 31 carrying a locking hook 33 which engages under a pin 35 held in lugs 9. Normally the covers 22 and 31 are held flush by a spring 36. To open the tank the inner end of cover 31 is pressed down to the dotted position, Fig. 1. This releases hook 33 and the cover 22 can be lifted to release hook 26, allowing the closure 5 and cover 22 to be swung back to the position shown in Fig. 3.
Patent GB-1106318-A (GB)
Title: Improved tyre sprue removal machine
IPC: B29C37/02
Filed: 1966-03-25
Abstract: 1,106,318. Trimming moulded tyres. CONTINENTAL GUMMI-WERKE A.G. 25 May, 1966 [1 June, 1965], No. 23258/66. Heading B5A. A machine for removing excess rubber from rubber tyres comprises a frame 1 having a circular passage 2 therein with peripheral trimming blades 9-14, lower guide and support rollers 7 and upper driven rollers 5. The rollers are carried on arms 15 pivoted about shafts 16, and are simultaneously moved towards or away from the tyre by a linkage 20-22, 24-29, driven by an hydraulic motor 23. A tyre is fed to the passage on a roller 30 of a carrier 4, and the linkage is then operated to bring the rollers 5, 7 into engagement with the tyre'and to raise it from the roller 30, whereupon the rollers 5 are driven by motors 33 and belt drives. The blades are moved radially inwardly from the periphery of the passage 2 to effect their trimming operations. After trimming, the rollers and blades are retracted, the tyre is thus lowered slightly on to the support roller 30 and removed.