baber/WOPTO huggingface dataset:
Patent GB-1495628-A (GB)
Title: Process for the production of aerogel-like structured silicas
IPC: C09D7/00
Filed: 1975-03-26
Abstract: 1495628 Aerogel-like structured silica DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 26 March 1975 [26 March 1974] 12640/75 Heading C1A The preparation of aerogel-like structured silica having a BET surface of 80-450 m.<SP>2</SP>g<SP>-1</SP>, powder density 10-60 gl.<SP>-1</SP>, DBP value of 2À4-3À8 mlg.<SP>-</SP><SP>1</SP>, average particle size range 0À1-7 Á, most frequent particle size range 1-2 Á, and pH in 4% aqueous suspension of 6-8 comprises incorporating 5-50% by wt. of water, based on dry silica, in uniform distribution into air dispersed pyrogenic silica and drying the resultant powder-form mixture. The pyrogenic silica preferably has a powder density of 10-60 gl.-', and a BET surface of 100-480 m.<SP>2</SP>g.<SP>-1</SP>. The water may contain basically reacting compounds such as ammonia, sodium or potassium hydroxide, water-soluble amine or waterglass, preferably selected to give an aqueous solution of pH from 7-14, or it is possible to add free silica or a substance which liberates silica and/or alkali by hydrolysis. The uniform distribution of water may be achieved by dropwise addition to the silica, or by spraying into the silica at silica temperatures of 20-100 C., or by spraying into a mass flow of fluidized silica. The water may also have a temperature 20-100 C. The silica charged with water may be steamed at 50-80 C. for 5-60 mins, before drying in a closed vessel. Alternatively, the water-charged silica is ground, dried, possibly reground, and dried. The product may be used as a matting agent in stoving lacquer or a polyurethane coating.
Patent GB-695912-A (GB)
Title: Improvements in or relating to public address and like sound disseminating systems
IPC: H04R1/40
Filed: 1951-05-31
Abstract: 695,912. Audible. and like signalling apparatus. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 31, 1951 [Oct. 1, 1948], No. 12844/51. Class 118 (ii). A public address or like sound radiating system comprises a' plurality of similar type hornless loudspeakers b all of which are arranged in a straight line along a narrow hornless baffle a with their diaphragms arranged so as to radiate sound through apertures in the baffle and with their axes substantially normal to the baffle, said baffle being disposed so that the line of loudspeakers is substantially vertical whereby sound is radiated mainly horizontally. The relationship between the length of baffle and the reverberation time of an auditorium is discussed. The loudspeakers at the ends of the line may be fed only with the low frequency end of the audioband. Some of the loudspeakers may be boxed in at the back as at c giving a resultant cardioid polar diagram in the horizontal plane. A circular polar diagram may be obtained by placing two of the former systems together such that the longitudinal edges of the baffles are parallel and their surfaces lie in mutally perpendiculai planes; the loudspeakers on the respective baffles may be relatively staggered. Microphones for the system may also be arranged in a vertical stack and various reverberation effects may be obtained by simply switching individual microphones into or out of circuit. U.S.A. Specification 1,874,733 is referred to.
Patent GB-614704-A (GB)
Title: Improvements in or relating to thermostat control devices having adjusting means for rendering the control device operative at different pre-selected temperatures
IPC: D06F75/26
Filed: 1947-05-29
Abstract: 614,704. Thermal switches. KIPPS, E. G. R., and ARON, E. May 29, 1947, No. 12847/46. [Class 38 (v)] The temperature of an electric iron is controlled by a member 21, slidable in a slot in the shell 17, so that a depending stop 23 carried thereby arrests the upward motion of an inclined extended portion 37 of the lower of two contact blades 30, 31. Both blades have an initial set upwards and the upper blade 30 is connected by an actuating rod 38 passing through a hole in the lower blade 31 to the free end of a bimetal strip 14 clamped to the sole. The member 21 may be located in one of several positions by a spring-blade 22 engaging notches 24 inside the shell. An indicating lamp 41 is brought into circuit when the contacts open.
Patent GB-546262-A (GB)
Title: Improvements in and relating to refrigerator cabinets
IPC: F25D23/08
Filed: 1941-10-06
Abstract: 546,262. Refrigerators. BRITISH THOMSONHOUSTON CO., Ltd. Oct. 6, 1941, No. 12878. Convention date, Oct. 7, 1940. [Class 29] "Breaker" strips 22 of non-metallic non-conducting material such as synthetic resin are secured between the flanges 18, 19 of the outer casing and liner of the cabinet or the door by S-section strips 23, preferably of sheet steel, which have resilient faces 28, 28a engaging the connected parts, and are provided at longitudinally spaced intervals with stiffening corrugations 27 or projections. The exposed parts of the strips may be covered with a decorative strip 29 of stainless steel. The wall and liner may be spaced apart by insulating bridge members 16 secured by screws engaging brackets 20 welded to the wall and liner, and the joints of the breaker strips are covered by corner members 30.
Patent GB-115568-A (GB)
Title: Improvements in Soles for Boots and Shoes.
Inventor: DALES ALFRED
IPC: A43B13/24
Filed: 1917-09-08
Abstract: 115,568. Dales, A., (trading as Dales & Co., A.). Sept. 8, 1917. Soles.-A rubber substitute is recessed round its edge to receive insets c of scrap leather through which the securing nails are driven. Nails are also driven through the material of the sole a.
Patent GB-103276-A (GB)
Title: Improvements in and relating to Crude Oil Storage Tanks.
Inventor: MUNN MALCOLM JOHN
IPC: B65D88/76
Filed: 1916-09-12
Abstract: 103,276. Munn, M. J. Sept. 12,1916. Manhole frames and covers.-Consists in providing in an oil reservoir completely submerged in water a man-hole 29 having a cover 30, and a detachable sleeve 32 which extends above the surface of the water. The sleeve is screwed on to the flange 31 and the water pumped out when the man-hole is to be used.
Patent GB-824307-A (GB)
Title: Improvements in or relating to electrical resistance elements
Inventor: WALLIKER DERYCK ARTHUR JOHN
IPC: H01C7/22
Filed: 1956-04-26
Abstract: 824,307. Electric heating resistance coat. ings. DECCA RECORD CO. Ltd. April 17, 1957 [April 26, 1956], No. 12914/56. Drawings to Specification. Class 39(3) [Also in Groups II and XXXVI] The Provisional Specification describes resistance heating elements in the form of nickel-chromium alloy evaporated on to a silica ceramic or glass support. The element may be coated with magnesium fluoride, lithium fluoride, silicon monoxide deposited by evaporation or covered by insulating varnish or a further glass sheet. The elements may be formed into helical or zig-zag patterns by masking or by engraving or photo-etching after deposition. Such an element may be formed into a room heater or a cooking utensil, e.g. a saucepan, frying pan, baking dish or kettle. Elements may be transparent and hence may be formed into heated windscreens for cars or aircraft. Terminal areas may be deposited by evaporation or may be formed by firing a suspension of goldplatinum fluoride in essential oils. The support may be a rod or a flexible tape of glass filaments subsequently wound on a rigid rod or tube.
Patent GB-1322663-A (GB)
Title: Hoisting crane with horizontal lattice jib and travelling carriage
IPC: B66C7/00
Filed: 1971-05-04
Abstract: 1322663 Jib cranes LINDEN-ALIMAK AB 4 May 1971 [4 May 1970] 12998/71 Heading B8B A crane comprises a substantially horizontal lattice jib with an upper, 1, and two lower, 2, 3, frame bars with connecting bars 4, 5, 6. The frame bars 1, 2, 3 are circular in cross-section and are tubular or solid. The arrangement is such that the longitudinal axes of the frame bars 1, 2, 3 and of the connecting bars 4, 5, 6, intersect. The frame bars 2, 3 constitute a runway for a lifting carriage 11, the reaction to the wheels 12 passing through the axis of the associated frame bar 2, 3.
Patent GB-1219187-A (GB)
Title: Numerical control system
IPC: G05B19/4103
Filed: 1968-03-18
Abstract: 1,219,187. Programmed control of machine tools. PRATT & WHITNEY Inc. March 18, 1968 [April 17, 1967], No.13013/68. Heading G3N. A numerical control system for moving a plurality of parts along reference ares between existing points and desired points comprises means for moving each part at a rate determined by its position error and the largest position error. As shown, in a numerical control system for positioning parts 22-24 of a machine tool by pulseresponsive servos 33-35, movement commands are read from a tape 37 by a reader 38 decoded in a decoder 39 and changed into binary form by a translator 40. The reader, decoder and translator are controlled by a tape reader control 41 for advancing the tape. The commanded end ofspan positions are fed from the translator to axes command registers 43-45 and an arc command register 46, for circular interpolation. Movement of a machine part is determined by pulses from electro-optical quantizers which are fed to axes actual position registers 51-53. The command and position registers are recirculating registers containing the same number of bits, one of which indicates sign. The instantaneous commanded positions of the parts are held in registers 54- 56 the contents of which are compared with the contents of axes command registers 43-45 by comparators 57-59. The outputs of the comparators, which are indicative of the existing errors between the instantaneous commanded positions and the commanded end positions are applied to interpolators 60-62 providing pulses to the servos 33-35. A clock pulse generator 64 feeds a binary frequency generator 65 providing a plurality of pulse trains to a feedrate adjust control 66, set manually, for a pulse generator 67 comprising a multiplier responsive to a programmed number, from the translator 40, stored in a register 68. The feedrate pulse frequency from the generator 67 is applied to a control network 80 which determines the rate at which command pulses are iterated by interpolators 60-62. Signals indicative of the interpolator output pulses are selectively fed to the control 80 by a function gate 88 enabled by an error magnitude control 93 determining the largest of the instantaneous position errors from comparators 57-59. During interpolation the existing position error is determined with respect to the commanded end position and pulse rates produced corresponding to such error. For a linear interpolation, first order equations are derived, for two or three axes, determining the resultant vector in dependence on the axes errors from the commanded positions. For circular interpolation, the end points are read into registers 43, 44 and the co-ordinates of the centre-point of the span read into registers 45, 46.
Patent GB-309752-A (GB)
Title: Improvements relating to conveyors for carrying minerals and other solid materials
IPC: B65G27/04
Filed: 1928-05-03
Abstract: 309,752. Barker, W. H. May 3, 1928. Jigging conveyers; shoots.-Jigging conveyers and shoots, and fixed shoots, of the kind which are wider at the delivery end d than at the receiving end c, are provided on the bottom with shallow channels b which diverge from the receiving to the delivery end. The central channel may be of rectangular cross-section and have a flat base, or the base may have a central ridge. The side channels may have transversely inclined bases and a vertical side.
Patent GB-326697-A (GB)
Title: Improvements in or relating to methods and apparatus for de-pulping fibrous foliate plants
IPC: D01B1/10
Filed: 1929-04-26
Abstract: 326,697. Jackson, L. Mellersh-, (I. G. Farbenindustrie Akt. Ges.). April 26, 1929. Scutching - apparatus; grip-chain and like arrangements for holding and conveying fibrous materials.-In apparatus for depuiping leaves, such as Yucca, Dracaena, &c., of the kind in which a rotary scutching drum co-operates with a fixed counterbeam, the leaf is introduced transversely to its fibre direction between the drum and beam, and is carried uninterruptedly in a direction oblique to the axis of the drum past the whole length of the drum, so as to be withdrawn in its fibre direction. The leaves are laid obliquely on the conveying means so that the direction of the fibre is perpendicular to the axis of the drum during depulping. The leaves B, B<2>, Fig. 1, are laid obliquely on the bands 4, 4<1> and passed round a pulley 5 to the bladed drum 1 and counterbeam 3. The bands 4, 4<1> are arranged to move obliquely to the axis of the drum and pressure rollers 6, 7 may be provided to grip the leaves. The leaves may be passed forward to a second rum for their untreated ends to be depulped. The leaves B - - B<3>, Fig. 3, may be placed on two ropes 13 and gripped by a third rope 14, and passed round a guide pulley 15 whilst being treated between the drum 11 and counterbeam 12. Specification 14352/06 is referred to.
Patent GB-218796-A (GB)
Title: Improvements in combined hot water and cold water cylinders
IPC: F24H1/18
Filed: 1923-05-16
Abstract: 218,796. Fildes, T. S. May 16, 1923. Heating water.-Relates to combined tanks for holding hot and cold water for domestic supply of the kind wherein the cold water tank is fitted above the hot water tank, so that an air space is formed between them and helps to present the hot water from warming the cold. In tanks of this type the top of the hot water tank is made concave so that the draw-off pipe may be at the side and at the uppermost part of the tank. The cold water tank a has a flat bottom a<1> fitting into the hot tank b, the top and bottom b<1>, b<2> of which are made concave so that the outlet pipe c projects from the highest part. d is the vent pipe and e the usual ball flat inlet; h is a feed pipe and i, j are flow and return pipes to the boiler. In the case of direct heating of the tank b, the pipe h has a U-bend at its lower end to prevent water backing up it. If the tank b is heated by electricity, its bottom is made flat, and if by gas, the bottom is made convex, with the lowest point at the centre.
Patent GB-1144976-A (GB)
Title: Gas seals
Inventor: TISDALL DEREK EDMOND
IPC: G21C13/028
Filed: 1967-03-21
Abstract: 1,144,976. Reactors. DARCHEM ENG. Ltd. 14 Feb., 1968 [21 March, 1967], No. 13111/67. Heading G6C. In a gas cooled nuclear reactor, gas seals are erected between the vessel liner 11 and the pillars 9 and are formed of the corrugated steel foils 1, 2 separated by the plate 4. The foils are crushed at the outer edges and welded to the support frames 3; the inner edges are free to expand or contract. The plate 4 rests in the recess 5, in 3, and on surface 6 within the pillar 9. The seal extends through the thermal insulation 12. Gas leakage occurs at D and E and hot gas is prevented from being directed into the insulation 12. A labyrinth leakage path may be formed by using a number of plates 4.
Patent GB-1062568-A (GB)
Title: Improvements in and relating to methods of manufacturing photoconducting bodies
IPC: H01L21/22
Filed: 1964-03-31
Abstract: 1,062,568. Photoconductive devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 31, 1964 [April 3, 1963], No. 13131/64. Heading H1K. A photoconductive material is produced by heating a gallium phosphide body at 300‹ to 750‹ C. whilst in contact with a source of copper to introduce copper into the gallium phosphide, separating the source of copper from the surface, and reheating at 700‹ to 1100‹ C. to diffuse the copper further in. The copper may be vapour deposited on the body, but in the preferred method a solid source of coppere.g. a copper wire or wires-is simply placed in contact with it. After the first heat treatment the body is separated from the solid source of copper and undergoes the second heat treatment in a chamber in which free copper and/or phosphorus may be present, but not in contact with the body. The first heat treatment takes place in a vacuum or in a low pressure inert or oxygen-bearing atmosphere. The latter condition, e.g. by using air at a pressure of 0.5 mm. Hg, is preferred since-presumably by the oxygen acting as a donor impurity-it results in an improved photoconductivity. The second heat treatment is in a vacuum. The initial body may be N-type and the amount of copper absorbed may be insufficient, just sufficient, or more than sufficient to convert it to P-type. The process may be used to render only a part of a gallium phosphide body photoconductive, in which case other kinds of semi-conductor devices may be formed in other parts of the body.
Patent GB-377760-A (GB)
Title: Improvements in or relating to deflectable power transmission mechanism
IPC: F16D3/32
Filed: 1931-05-04
Abstract: 377,760. Universal joints. LJUNGSTRÍM, B., 83, Linnegatan, Stockholm. May 4, 1931, No. 13156. Convention date, March 9. [Class 80 (ii).] In a double Hooke's joint for transmitting a constant angular velocity, particularly for driving steering wheels of motor vehicles, the intermediate connecting member 3, between the single joints, encloses them and constitutes an axially split casing supporting preferably internally, in its interior a pair of pivot pins 11, 12 of the respective joints. The shaft ends are centred on each other by a ball-and-socket or like joint. The two halves of the casing, which may be guided on their meeting surfaces by tongues and grooves concentric with the pins 11, 12 or by studs, are held together by a hoop 23 driven on to the thickened and tapered central part. In the form shown in Fig. 1, the pins 11, 12 are journalled in bushes in rings 7, 8 journalled about a diameter at right-angles on pins 13, 14 which pass through the spherical ends 5a, 6a of the shafts. The casing member 3 is maintained equally inclined to the shafts either by a ball 17 engaging a socket 19 each having stems projecting through the shaft ends into the pins 13, 14 to lock them ; or by coacting spherically faced members 20, 21, Fig. 6, having annular teeth 22 ; or by modifying the shaft ends. The ends of the casing are spherical and are sealed by sheet metal cups 29 which can be screwed on the shafts and locked by nuts 30 to take up wear. The cups may contain annular washers which may be spring-pressed axially. There may be an additional spherical jacket 33, Fig. 4, screwed to the casing and provided with a packing washer 35. Lubricant is supplied through an aperture 36 in the shaft 6.
Patent GB-613956-A (GB)
Title: Lighting unit for photographic printer
IPC: G03B27/54
Filed: 1946-05-01
Abstract: 613,956. Lighting systems. GENERAL ANILINE & FILM CORPORATION. May 1, 1946, No. 13176. Convention date, June 16, 1945. [Class 75 (iv)] [Also in Group XX] A lighting unit for a photographic printer and having a housing provided with an illumination aperture is characterized by a number of tubular electric lamps arranged within the housing in two non co-planar groups, one group of said lamps being symmetrically disposed about the aperture to produce non-uniform illumination and the other group being arranged in centrally symmetric manner about the aperture and at an angle to the first group and the plane of the aperture so as to compensate for the non- uniformity of illumination produced by the first group. Preferably the lamps are of the fluorescent tube type. As shown, pairs of fluorescent tubes 17 are arranged parallel to the sides of a square aperture 13 in a lamphouse provided with a ground glass diffusing screen 12, these lamps producing an illumination intensity distribution as shown in Fig. 3. A second series of pairs of tubes 21 are arranged to extend from between each of the adjacent pairs of tubes 17 upwardly away from the aperture 13 towards a central plate 23 so that the part 20 of the aperture receives most light from these lamps to produce uniform illumination of the aperture. The tubes 17 may be operated in pairs or singly, as may the tubes 21. A control unit comprising a choke 24 and an automatic starter 25 is provided for each tube. A pilot lamp behind a coloured window 27 with a series resistor are connected across a resistor in each starter so that the bulb is lit when the tube is starting up or not functioning continuously. In a modification for a rectangular aperture only two tubes 17 are used, one on each side of the aperture, and two tubes 21 are arranged to be in a plane perpendicular to the aperture and parallel to the axes of the tubes 17 and upwardly inclined away from the aperture towards a central point.
Patent GB-549570-A (GB)
Title: An improved process for the aromatization of hydrocarbons
IPC: C10G35/06
Filed: 1940-08-20
Abstract: 549,570. Catalysts and catalytic apparatus. KELLOGG CO., M. W. Aug. 20, 1940, No. 13239. Convention date, Sept. 13, 1939. Drawings to Specification. [Class 1 (i)] [Also in Group IV] Naphthas rich in aliphatic hydrocarbons are converted into products rich in aromatic hydrocarbons suitable for use in motor fuels by contacting in the vapour phase with an aromatization catalyst at a temperature (T) of 875-1050‹ F. and a pressure of 30-450 pounds per square inch in the presence of added hydrogen in an amount ranging from 0.4 to 9.0 mols of hydrogen per mol of charging stock. The reaction is effected with a time factor of from 0.1 to 25, where the time factor (F) is the number of hours required to pass the volume of charge measured as liquid through one volume of catalyst space, and at a severity factor (S) of 925 to 1100 where S=T+100 log 10  F. In addition, the mol ratio of hydrogen to charging stock is selected to be not less than S-875/125 and not more than S-890/15 and the hydrogen produced is removed from the process. The catalyst consists of a metal, or oxide thereof, of the left-hand columns of groups 4, 5 and 6 of the periodic table, e.g. chromium, molybdenum, tungsten, titanium, cerium, thorium and vanadium, preferably supported on an alumina base. The catalyst may be used as a stationary bed or passed continuously through the reaction zone; regeneration may be effected periodically by treatment with an oxygencontaining gas. The Specification as open to inspection under Sect. 91 also describes the preparation of some of the catalysts, viz., molybdenum oxide on activated alumina or alumina gel, and chromium trioxide on activated alumina. An aqueous solution of ammonium molybdate or chromium trioxide is mixed with the support and the pressure is alternately reduced and allowed to rise; the product is drained, dried, and heated at 1200‹ F. The use of magnesium chromite on alumina as a catalyst is also referred to. The catalysts may be regenerated by the use of a hydrogen-containing gas ; this use may follow a treatment with the oxygen-containing gas, in which case it serves to condition the catalyst for the conversion stage. The Specification also describes the whole process with reference to two flow diagrams showing a stationary bed and moving bed type of apparatus respectively. It further describes with reference to two Figures the details of arrangements for introducing and removing catalyst from the reaction vessels in the case of moving-bed apparatus. Catalyst passes from a hopper through a chamber into which inert gas is injected and thence into the reaction vessel through a tapering tube where it is preheated by indirect heat exchange with the feed and hydrogen, which flow in co-current with the catalyst through the reactor. Catalyst leaves the reactor through a chamber having mesh sides, where it separates from the reaction products, and then through a gas lock chamber to the regenerator. This subject-matter does not appear in the Specification as accepted.
Patent GB-205128-A (GB)
Title: Improvements in or relating to machines for combing cotton, wool and the like
IPC: D01G19/10
Filed: 1922-05-11
Abstract: 205,128. Hetherington & Sons, Ltd., J., and Horridge, J. May 11, 1922. Combing - machines. - The segment 5 of a comb cylinder is made readily removable from the main body, and is secured to flanges 4 at the ends of the main body 1 by set-screws. The main body has a portion 1<a> of reduced diameter, over which the segment fits, and is secured to the shaft by a set-screw 3.