baber/WOPTO huggingface dataset:
Patent GB-925244-A (GB)
Title: Improvements relating to defrosting indicators
IPC: G01N31/22
Filed: 1961-04-26
Abstract: 925,244. Temperature indicators. G. A. B. RUHNE. April 26, 1961 [April 26, 1960], No. 15116/61. Class 97 (3). A defrosting indicator comprises a wholly or partly transparent envelope containing a waterin-oil or oil-in-water emulsion which separates on freezing and remains separated on subsequent defrosting, and a dye placed in contact with, or in the immediate proximity to, the emulsion, the dye being water-soluble, e.g. potassium permanganate or methylene blue when the emulsion is of the water-in-oil type or an oil-soluble dye when the emulsion is of the oil-in-water type, to produce a conspicuous change in colour when the frozen indicator becomes defrosted. The oil of the emulsion is liquid at temperatures about or immediately below the indication temperature. The dye may be in powder or tablet form and in the latter case may be coated with sugar or other water-soluble substance to increase the storage life of the indicator.
Patent GB-217933-A (GB)
Title: Method of establishing a system of aerials with directional radiation
IPC: H01Q21/08
Filed: 1924-06-23
Abstract: 217,933. Soc. Franþaise Radio-Electrique. June 23, 1923, [Convention date]. Drawings to Specification. Directive signalling.-A system of n identical aerials fed with currents of equal amplitude and phase are situated in a straight line at a distance d apart, d being less than one wavelength and of such a value that the product n d is an integral plurality of wavelengths which is determined by the number of lines of extinction which it is desired to give the system. In a modification the aerials are fed with currents of equal amplitude but with phase differences proportional to their spacing. The Specification, as open to inspection under Sect. 91 (3) (a) states that the product n d may be a whole number of wavelengths and that the minimum number n of aerials to give the required characteristic is preferably employed. This subject-matter does not appear in the Specification as accepted.
Patent GB-591357-A (GB)
Title: Improvements in or relating to carrier wave transmitter systems
IPC: H04N1/00
Filed: 1944-08-09
Abstract: 591,357. Modulating systems. PRESS WIRELESS, Inc. Aug. 9; 1944, No. 15160. Convention date, Sept. 18, 1943. [Class 40 (v)] The aerial 5 is energized by radio-frequency amplifier 4 fed from a fixed carrier frequency source 1 and a frequency-modulated source 2 of carrier controlled by a signal source 3 in such a way that the frequency difference between sources 1 and 2 is equal to the tone frequency it is desired to produce at the output of a co-operating receiver. The second detector, .10 of a known amplitude modulation superheterodyne receiver feeds the output stage' 11 with the translated variable tone frequency. The system is particularly applicable to the transmission of facsimile signals in which light and shade values are represented as. different tone frequencies, as described in Specifications 537,689 and 537,699. In a modification, both sources 1, 2 are frequency modulated in opposite senses. The two carriers may be radiated from separate aerials.
Patent GB-643219-A (GB)
Title: Improvements in and relating to high-frequency dielectric heating apparatus
IPC: B29C65/04
Filed: 1948-06-04
Abstract: 643,219. Dielectric heating. COMMUNICATIONS PATENTS, Ltd., and DOWNING, R. K. June 4, 1948, No. 15184. [Class 39(iii)] A dielectric heating apparatus comprising two electrode plates 1, 2, between which the material to be heated is placed, is characterized in that one of the electrode plates is resiliently mounted by springs 16, 18, mounted on bolts 13 with adjusting nuts 17, so as to allow it to pivot in a universal manner about a pivot 11 in a recessed portion 10 of the electrode plate. Individual adjustment of the bolts 13 may be made in order to vary the spacing of the co-operating. faces of the electrodes.
Patent GB-593835-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/02
Filed: 1945-06-15
Abstract: 593,835. Lens systems. TAYLOR, TAYLOR, & HOBSON, Ltd., and COX, A. June 15, 1945, No. 15209. [Class 97 (i)] In a telephoto objective comprising a front convergent meniscus doublet separated from a rear divergent meniscus doublet each convex to the front, the radius R4 of the front surface of the rear member lies between .20F and .30F, the radius R6 lies between .10F and .20F, and the axial thickness D1 of the convergent element of the front member is not less than .045F, where F is the equivalent focal length of the objective. The contact surfaces of the front or rear members may be cemented or separated by a small air-gap. Numerical data for three examples are given.
Patent GB-457284-A (GB)
Title: Improvements in and relating to clutches for power presses and the like
IPC: F16D11/06
Filed: 1935-05-24
Abstract: 457,284. Positive clutches. SMITH, W. J., and PRITTY, J. J., c /o Bliss Co., Pocock Street, Blackfriars Road, London. May 24, 1935, No. 15248. [Class 80 (ii)] A rocking-key clutch, for power presses &c. is controlled by a transversely-pivoted abutment 8 capable of occupying two positions, in one of which it lies in the path of an arm 7 on the key 1 and in the other of which it lies in the path of a projection 13 on a loose ring 10 formed with a substantially radial slot 11 engaging a pin 12 on the arm 7. The projection 13 is disposed somewhat in advance of the arm 7. Thus, when the abutment is moved from the first position so as to release the arm 7, the clutch engages under the action of a spring 9. If the abutment is allowed to return to the first position, disengagement at the end of one revolution will result. If, however, the abutment is held in the second position, the projection 13 will engage therewith towards the end of one revolution and disengagement of the clutch will again result. The abutment must then be allowed to return to the first position before another operation can commence. The abutment is rotated through the medium of gear teeth thereon by a rack 16 operated against a spring 20 by a cable 17 attached to a treadle. If desired, the abutment may be capable of occupying a third position in which it lies out of the path of both the arm 7 and the projection 13, so that the clutch can remain engaged indefinitely, means being provided for normally preventing movement of the abutment into this third position ; or the ring 10 may be movable out of the path of the abutment or may be removable.
Patent GB-240222-A (GB)
Title: Improvements relating to the rectification of alternating current
IPC: H02M7/40
Filed: 1924-06-24
Abstract: 240,222. Robinson, E. Y., and Metropolitan-Vickers Electrical Co., Ltd. June 24, 1924. Vacuum apparatus, arrangements of; commutator switching-arrangements. - An alternating current rectifying system employing vacuum electric rectifying devices is provided with a commutator for disconnecting one or more of the devices for the whole or a large portion of their non-conducting periods from the alternating current source and for re-connecting them for their conducting periods. In Figs. 4 and 5, the secondary of the transformer is connected to the load 6, 7 through valve rectifiers 3 - - 5 and a commutator 16 comprising discs 17 - - 19 having semi-circular conducting and non-conducting parts phase-displaced by 120‹ and connected to slip rings. Connection to the discs and slip rings is made by brushes and the shaft is rotated by a synchronous motor, energized from the alternating source, in a clockwise direction when the phase rotation of the current is contra-clockwise, connection and disconnection being made aborut 30‹ (electrical) before and after the valve is conductive. In Figs. 7 and 8, the double Y system comprises valves 34 - - 36 and a commutator 37 connecting respective anodes to the corresponding phases of both secondaries 21, 22, the corresponding phases being 180‹ out of phase and wound on the same transformer leg. The commutator switching-members 38 - -43 comprise discs having semi-circular conducting and non- ducting parts connected to slip rings, the conducting parts of each pair being 180‹ out of phase with each other and 120‹ out of phase with the corresponding one of the next pair. When the valve is non-conducting as regards one phase of of the secondary 21, the commutator disconnects it and connects it to that phase of the secondary which is 180‹ out of phase. The lead 33 is connected to the mid-point of a choke coil 32 connected to the star points of the secondaries.
Patent GB-221559-A (GB)
Title: Improvements in and relating to the cracking or decomposition of materials containing or yielding hydrocarbons
IPC: C10G1/08
Filed: 1923-06-12
Abstract: Hydrocarbons of low boiling point are obtained by subjecting tars, crude oils and residuums, coal &c. to the processes described in Specifications 171,367, 171,390, 174,321, 180,625, and 193,922, [all in Class 91, Oils &c.].  The materials are brought in a finely-divided condition at high temperatures in presence of hydrogen, hydrocarbon vapours, or other gas which prevents dehydrogenation into contact with a catalytic material which will not form a carbide, such as a molten metal, other than lead.  The materials, if liquid, are sprayed and passed together with hydrogen &c. through the catalyst.  In treating producer tar from lignite or coal, the oxygen compounds form phenols or cresols or are converted into lower-boiling oxygen compounds such as acetone &c. and the nitrogen compounds form ammonia, pyridine, &c.ALSO:Solid paraffins may be separated by crystallization from lignite tars &c. before treatment. p
Patent GB-1203521-A (GB)
Title: Combined valve and water spray nozzle
Inventor: MEYNELL HUGH BERNARD
IPC: B05B1/30
Filed: 1968-03-30
Abstract: 1,203,521. Spray producers. MEYNELL VALVES Ltd. 13 Feb., 1969 [30 March, 1968], No. 15436/68. Heading B2F. A combined valve and water spray nozzle comprises a hollow valve body 11, a combined pistol grip handle and water supply pipe 12 extending laterally of the valve body, an axially movable valve member 17 within the valve body adapted to move axially therein, a trigger-like operating lever 36 for the valve member arranged in front of the pistol grip handle, a linkage 33, 34 extending from the operating lever to a position behind the handle where it engages with the movable valve member, and adjustment means 31 cooperating with the valve member to adjust the degree of opening of the valve by the trigger. The valve member may carry a resilient seal 26 adapted to engage rigid valve face 27 on the valve body, and may be guided in a bore in support member 18 rearward of the handle. The valve body and handle may be made of metal and protected against damage by individual rubber sleeves 38 and 39.
Patent GB-545697-A (GB)
Title: An improved method of regenerating catalytic and other material having carbonaceous deposits thereon
IPC: B01J8/18
Filed: 1940-10-18
Abstract: 545,697. Regeneration of catalysts. STANDARD OIL DEVELOPMENT CO. Oct. 18, 1940, No. 15442. Convention date, Nov. 24, 1939. [Class 1 (i)] Catalysts contaminated by carbonaceous deposits are regenerated by suspending them in a gaseous medium at a pressure of 2 to 30 atmospheres and introducing the suspension into an oxidizing zone maintained at a temperature below 1600‹F., the suspension remaining in the zone for a period between 2 seconds and 2 minutes. The regenerated catalyst is then separated from the suspension. In the illustrated embodiment catalyst from hopper 10 is suspended in a current of air in pipe 13 and injected into the regenerating chamber 14 which consists of tubes 17 surrounded by a cooling jacket. A heat-transferring medium is circulated through the jacket and coolers 20, 21 which may be used to pre-heat the air in which the catalyst is suspended. After regeneration the catalyst is separated from the suspension in cyclones 31, 41, 45 and is treated in counter-current with a stripping gas, e.g. steam, in chamber 37. The regenerating gases may be recirculated through line 51 and cooler 52. Specifications 539,383 and 543,838 are referred to.
Patent GB-956771-A (GB)
Title: Image development projection
IPC: G03G15/22
Filed: 1960-05-03
Abstract: 956,771. Episcopic projection in xerographic apparatus. RANK-XEROX Ltd. May 3,1960 [May 7, 1959], No. 15522/60. Headings G2H and G2J. In a xerographic process a xerographic plate is coated with developer powder either before or during exposure and the latent image formed is made visible by passing an acceptor member into contact with the plate and by establishing a suitable potential field between them thereby transferring a powder image to the acceptor member. In the apparatus shown, a rotating transparent drum 60 comprising a photo conductive layer 62 which is specular reflecting, is coated with a developing powder e.g. charcoal, by a brush 65 and is charged by a corona charging unit 20 before being exposed to a light pattern by cathode ray tube 67. The drum is then pressed against a moving web 41 which has a specular reflecting surface, and a potential difference is applied between the drum and this web (through conducting roller 40) so that a powder image of the pattern is transferred to the web. The images on the web 41 and/or drum 60 are projected on to screens 53, 78 respectively by light from lamps 50, 74 being specularly reflected by the image bearing surfaces. The images may subsequently be fixed. A positive and/or a negative image of the original may therefore be projected as required, by lamp 50 or 74, lenses 51, 54 or 75, 77, on to screen 53 or 78.
Patent GB-447229-A (GB)
Title: A process for the preparation of dry medium-grain and fine-grain mixtures
IPC: B03B4/02
Filed: 1935-05-28
Abstract: 447,229. Separating solid materials. KRUPP GRUSONWERK AKT.-GES., F., Buckau, Magdeburg, Germany. May 28, 1935, Nos. 15528 and 15529. Convention dates, May 28, 1934 and Dec. 17, 1934. [Class 117] A pneumatic jig comprises a rectangular dressing surface traversed by an upward air current and given a slow forward movement and jerky backward movement by means of cams. There may be two surfaces in series and two such pairs of surfaces in tandem. In the form shown, two machines are symmetrically arranged on a common frame each consisting of beds 13, 21 mounted on links 26 and jigged by cams 25, the hopper 24 extending the full width of the beds and having an adjustable outlet. The air chamber beneath each bed is subdivided and a valve is provided in each compartment to regulate the flow. An outlet 19 extending the width of the beds is provided for the heaviest material and the remainder passes over a bridge 20 to the second bed where further subdivision takes place, the second bed having a smaller inclination. The second bed may, however, be omitted. The parts of the beds adjacent to the outlets are non-permeable, and the size of the outlets is adjustable. Reference has been directed by the Comptroller to Specification 374,423.
Patent GB-793548-A (GB)
Title: Improved vulcanisation process for rubber
Inventor: COULTER DAVID JAMES BRYANS
IPC: C08K5/43
Filed: 1955-05-31
Abstract: In a process for vulcanizing synthetic rubber there is prepared a vulcanizable mix comprising the rubber, a reinforcing type furnace black, sulphur as essential vulcanizing agent, an accelerator, and an N : N1-thio-bis-morpholine, preferably N : N - monothio - bis - morpholine or N : N-dithio-bis-morpholine in an amount of 0.5 per cent by weight of the synthetic rubber. The amount of sulphur is preferably between 2 and 3 per cent, and that of accelerator up to 1.5 per cent, by weight of the synthetic rubber, which may be selected from polymers of butadiene-1,3, 2-methybutadiene-1,3, isobutene and copolymers of these compounds with acrylonitrile, styrene, methyl methacrylate, and other compounds copolymerizable therewith.  The accelerator is preferably of the delayed action type, e.g. a thiazole sulphenamide such as N-tert.-butyl, N-tert.-octyl or N-cyclohexyl benzthiazyl sulphenamide, or benzthiazyl sulphenmorpholide or sulphenpiperide, or a substituted mercaptobenzthiazole such as 2 : 4-dinitrophenyl-2-benzthiazyl monosulphide, ethylbenzthiazyl disulphide, or 2 : 21-dibenzthiazyl disulphide.  The N : N1-thio-bis-morpholine and the accelerator may be incorporated into the synthetic rubber mix as a previously blended mixture.  Examples are described.  Specification 711,236 is referred to.ALSO:In a process for vulcanizing natural or synthetic rubber there is preferred a vulcanizable mix comprising the rubber, a reinforcing type furnace black, sulphur as essential vulcanizing agent, an accelerator, and an N; N1-thiobis-morpholine, preferably N; N1-monothio-bis-morpholine or N; N1-dithio-bis-morpholine in an amount of 0,5 per cent by weight of the rubber.  The amount of sulphur is preferably between 2 and 3 per cent and that of accelerator up to 1,5 per cent, by weight of the rubber.  As examples of synthetic rubbers are specified polymers of butadiene 1, 3, 2-methylbutadiene 1, 3, isobutene and copolymers of these compounds with acrylonitrile, styrene, methylmethacrylate, and other compounds copolymerizable therewith.  The accelerator is preferably of the delayed action type, e.g., a thiazole sulphenamide such as N-tert. butyl, N-tert-octyl or N-cyclohexyl benzthiazyl sulphenamide, or benzthiazyl sulphenmorpholide or sulphenpiperide, or a substituted mercaptobenzthiazole such as 2 : 4-dinitrophenyl-2-benzthiazyl monosulphide, ethylbenzthiazyl disulphide, or 2; 21-dibenzthiazyl disulphide.  The N; N1 thio-bis-morpholine and the accelerator may be incorporated into the rubber mix as a previously blended mixture. Several examples are described.  Specification 711,236 is referred to.
Patent GB-306344-A (GB)
Title: Protective arrangement for springs used in association with electrical apparatus
IPC: H01B17/26
Filed: 1928-05-29
Abstract: 306,344. Hermsdorf - Schomburg- Isolatoren Ges. May 1, 1928, [Convention date]. C a r r y i n g conductors through partitions. - In order to prevent undue heating by induced currents, of a spring surrounding the lead-through pin or conductor in an electrical h i g h tension lead - through insulation device, a short-circuit loop 2, or a closed winding, connects the lead-through pin 3 above and below the spring, as shown. In an alternative construction, layers of non- magnetic material are arranged between the coils of the spring so as to interrupt the magnetic circuit and weaken the induction.
Patent GB-1033807-A (GB)
Title: Method and apparatus for the manufacture of fibres of glass, thermoplastics or like meltable materials
Inventor: WALZ ALFRED
IPC: D01D5/00
Filed: 1963-04-22
Abstract: <PICT:1033807/C1/1> In the manufacture of fibres from meltable material 4 such as glass or thermoplastics, one or more streams 41 of the melt are first engaged by a blowing medium flowing with high velocity in substantially the same direction as the stream or streams, at or adjacent to the upper end of a narrow channel 10 which provides a fiberization zone into which the blowing medium passes, the blowing medium being introduced over a curved guiding surface 5 into the fiberization zone by the Coanda effect and passing downwardly in a substantially vertical direction through the channel 10. Two blowing nozzles 1, 2 are provided each side of and below the bushing or bushings 3 of a reservoir for the melt 4. The cylindrical surface 5 is partly covered by a hood 6 to give a feed channel 7 for strem or like blowing medium. The surface 61 of the hood 6 is in spaced parallel relation to the surface 5 to give a slot 8 and the blowing medium leaving the edge 9 of the slot follows the surface 5 by Coanda effect and prevents the melt streams 41 reaching the sides 11, 12 of the blowers 1, 2 and fiberizes the melt centrally at 13.  A diverging diffuser 14 is provided.  The surface 5 may be circular, as shown, or have varying radii of curvature. A particular construction of the blowing nozzle is disclosed.
Patent GB-558376-A (GB)
Title: Improvement in suspension filing folder and index tab
IPC: B42F21/00
Filed: 1942-11-09
Abstract: 558,376. Index tabs. JONAS, F. D. Nov. 9, 1942, No. 15778. Convention date, Nov. 8, 1941. [Class 16] A tab for use with a filing-folder having suspension bars consists of a strip folded to form an index-slip receptacle 11, which is adapted to seat on the top edge of the folder and has downwardly extending limbs 16 terminating in hooks 17, which pass through apertures in the material of the folder and engage under the suspension bar 5. The folder is formed at the upper edge with a pocket to receive the suspension bar, and, after the hooks 17 of the tab have been passed through the apertures 6, the bar is inserted, so as to lock the tab in position. The tab is formed of metal, celluloid, &c., and may have a window to expose the index slip. One wall of the tab may have a' shoulder 15 to engage over the upper edge of the folder, or the walls may be separated by a spacing-bar. Both walls may have hooked limbs to engage under the bar. The bar may have spaced notches in its lower edge, which are engaged by the hooks, so as to prevent lateral movement of the tab.
Patent GB-520821-A (GB)
Title: Improvements in or relating to directional radio transmitting devices
IPC: G01S1/02
Filed: 1939-05-26
Abstract: 520,821. Directive wireless signalling. SOC. INDUSTRIELLE DES PROCEDES LOTH. May 26, 1939, No. 15783. Convention date, May 30, 1938. [Class 40 (v)] A directional radio transmitting device for ascertaining direction, particularly in aerial navigation, comprises an open or closed frame aerial connected to an impedance at which is set up an alternating voltage of the frequency to be transmitted, two points situated on either side of the electrical centre of the impedance being alternately earthed. Differently directed beams overlapping one another are transmitted alternately so as to produce a guide plane in which both beams are received with equal intensity while outside this plane according as the receiver is situated to one side or the other of the guide plane the beam is received from one or the other direction. The alternating emission of the differently directed beams may be effected so that the modulation in the two different directions corresponds to the code forms of the letters " a," " n," or a dot-and-dash method may be employed. A transmitting device with a closed frame aerial is shown in Fig. 1. The radiating parts 1, 2 of the frame aerial are connected to an oscillatory circuit formed by a condenser 3 and a coil 4. In the coil is induced an alternating voltage from a generator 5 and amplifier 6. The coil 4 has two tappings 7, 8 which are alternately earthed by means of a switch 9 in the desired rhythm through a coil 10 and condenser 11. For use on short or ultra-short waves an open frame aerial formed by two vertical radiating devices 1, 2, Fig. 2, is employed. The tappings 7, 8 are connected to earth by the switch 9 without the interposition of a coil or condenser.
Patent GB-763509-A (GB)
Title: Improvements in or relating to metal pipes for the distribution of fluids
Inventor: BELLINGHAM-SMITH ROBERT
IPC: F16L11/14
Filed: 1954-05-28
Abstract: 763,509. Making pipes. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 19, 1955 [May 28, 1954], No. 15787/54. Class 83 (2). [Also in Group XXVIII] A metal pipe of mild steel having a flat crosssection is formed by flattening or further flattening a seamless pipe 2, Fig. 1, of circular or partially flattened crosssection ; alternatively, the pipe is drawn or extruded initially in the flattened condition. In modifications, (a) the pipe is formed in the completely collapsed condition from a pair of metal strips 3, 4, Fig. 2, seam - welded together along the edges thereof, and (b) a single, flat strip 10 of metal, Fig. 5, is folded and the opposed longitudinal edges 8, 9 of the strip are seam-welded.