baber/WOPTO huggingface dataset:
Patent GB-1309699-A (GB)
Title: Device for sampling and or eliminating dust and like solid particles from a polluted atmosphere
IPC: F24F3/16
Filed: 1970-04-01
Abstract: 1309699 Rotary air filter; cyclone separator CHARBONNAGES DE FRANCE 1 April 1970 [4 April 1969 (2) 5 March 1970] 15456/70 Headings BIT and B2P [Also in Divisions F1 F4 and G1] A device for sampling and/or separating polluting agents, e.g. dust, from the atmosphere comprises a rotor which acts both as a particle collecting member and also as a radial delivery fan. The rotor may comprise a vane fan 12 (Fig. 1) on top of which is afixed a filter 4 of the membrane type, or the rotor may comprise a relatively thick permeable disc 16 (Fig. 3) e.g. of polyurethane foam, mounted on an impermeable base 17 and carrying the filter membrane 4, or the permeable disc may itself constitute both the fan and the filter (Fig. 8). The rotor is mounted in a chamber 1 having an axial inlet 8 and radial evacuation orifices 9, the diameter of the inlet and outlets being chosen so as to provide a flow-rate through the chamber very much less than the actual flow rate of the fan when the rotor is rotated at constant speed by motor 6. Polluted air is sucked in through 8 (arrows Fa) and forced out through 9 (arrow Fe) after passing through the filter element, the majority of the air recirculating several times (arrows Fr). Dust is deposited on the filter disc, first on the central zone 10 (Fig. 2) then outwardly to zone 14. The amount of dust deposited may be observed by drawing concentric circles 15 on the face of the disc. The disc may have its centre slightly hollowed (Fig. 7 not shown) or be replaced with an annulus (Figs. 4 and 9 not shown). The rotary filter may be combined in series with a cyclone (Fig. 13 not shown) for removal of larger particles before passing to the rotor and the filter disc may be impregnated with coloured reagents for the detection of particular gases or with activated carbon for removal of noxious gases. The top of the casing 1 is suitably transparent.
Patent GB-1535807-A (GB)
Title: Spheroidal alumina particles
IPC: C01F7/308
Filed: 1976-04-15
Abstract: 1535807 Spheroidal alumina particles UOP Inc 15 April 1976 [16 April 1975] 15489/76 Heading C1A Spheroidal alumina particles are made by (a) mixing alumina powder, an aluminium salt of a strong acid, a water-soluble surfactant and sufficient water to yield an extrudable mixture; (b) stirring or mulling (i.e. mixing or grinding) the mixture until the decreasing viscosity stabilizes, and extruding the mixture; (c) segmenting and balling the extrudate by centrifugal force on a spinning drum; (d) drying and calcining the resulting spheroidal product. The aluminium salt may be the nitrate, chloride or sulphate. Preferably, calcining is effected for 1-4 hours at 525-775 C. in air containing 1-5 wt. per cent steam and then for 1-4 hours at 875-1100 C. in air. The product provides a thermally-stable catalyst base.
Patent GB-129875-A (GB)
Title: An Improved Undergarment and Infants' Binder.
Inventor: HAWKEY BERTHA
IPC: A41B13/08
Filed: 1918-09-27
Abstract: 129,875. Hawkey, B. Sept. 27, 1918. Abdominal belts; undervests and body undergarments.-An undergarment which may be cut out as described in Specification 118,548, comprises a body portion adapted wholly to cover the body, that portion which covers the abdomen or more or less of the lower part of the body being slit at the sides and extended laterally to form flaps or wrapping portions g which are secured in place by tapes or other fastenings. The lower part of the garment serves as a binder for infants, and as an abdominal belt for adults, and may be made of material adapted to give additional support. Front and back depending flaps may be added for adults, and for infants the back portion may be extended downwardly and outwardly.
Patent GB-577447-A (GB)
Title: Improvements in liquid-level indicating devices
IPC: G01F23/56
Filed: 1944-08-17
Abstract: 577,447. Actuation of switches. BRAMSON, M. L. Aug. 17, 1944, No. 15757. [Class 38 (v)] A device which gives warning of a fall in the level of a liquid in a tank comprises a tube enclosing a float attached to a rod which is hinged at its upper end to a lever actuating a switch. The switch is of the micro type and a large angular movement of the lever causes a small movement of the member which operates the switch. Fig. 1 shows the device fitted to a tank 30. The float 12 is enclosed in an openended tube 10 and is attached to a rod 14 hinged to a short lever 16. The spindle 18 of the lever is pivoted at its ends in bearings in a member 28 and is formed with a notch 38 the lower end of which is situated a short distance from the centre of the spindle. Resting in the notch is a knifeedged plunger 22 carried by and passing through a flexible disphragm 24. The upper end of the plunger makes contact with the actuating member (not shown) of the micro switch 32 which is attached to the plate 26 by adjusting screws surrounded by springs 36. When the float 12 falls the rotation of the spindle 18 causes a small vertical movement of the plunger 22. The actuation of the switch may operate a bell, lamp or other signal.
Patent GB-696877-A (GB)
Title: Machine for cleaning and sorting bed feathers
IPC: B68G3/08
Filed: 1952-06-23
Abstract: 696,877. Pneumatic separating. LORCH AKT.-GES., L. H. June 23, 1952 [June 29, 1951], No 15806/52. Class 117  In a feather cleaning and sorting machine in which the material is sorted by an air stream passing through two or more chambers, the speed and amount of air is regulable in at least the last chamber but one. In one embodiment, the fan 1 draws air into the raw material inlet 2 and through the chambers I...–V. The raw material is agitated in chamber I by stirrer 3 and long feathers remain therein to be removed by opening the hinged sieve 4. The lighter material passes through channels 6, 7 into chamber II which has a stirrer 8, and the cross-section of its outlet channel 10 is adjustable by the movable wall 11. Pillow feathers remain in chamber 'II, and the remainder of the material descends into chamber III- through channel 12. This chamber has a stirrer 17 a movable wall 19 and an air bypass channel 14 controlled by throttle 15 and leading directly to the fan 1. The channel 14 which controls the volume of air passing through chamber III has its inlet, in channel 12, covered by a sieve 13. The sieve passages are' inclined downwardly towards the main airstream so that the sieve is self-cleaning. A symmetrically-arranged sieve may be arranged opposite sieve 13, in the wall 24, to reduce the air pressure on sieve 13, Fig. 2 (not shown). The half-down collects in chamber III, the down being carried ub channel 18 to descend through channel 20 into chamber IV for collection. ' The air and dust are drawn through a sieve 21 and ejected at the fan outlet 23. In a modification, Fig. 3 (not shown), independent fans are provided for the main airstream and the by-pass channel. The by-pass arrangement may be applied to more than one of the sorting chambers.
Patent GB-1137709-A (GB)
Title: Variable gain circuit
IPC: H03G7/00
Filed: 1966-04-12
Abstract: 1,137,709. Amplifiers. INTERNATIONAL BUSINESS MACHINES CORP. 12 April, 1966 [15 April, 1965], No. 15819/66. Heading H3T. . An amplifier has a semi-conductor shunt negative-feedback network normally biased to have a low impedance so that the amplifier gain is low, but which presents a high impedance when the instantaneous value of the input signal exceeds a certain level, so that the gain is then high; at still higher levels the feedback network impedance becomes low again. In Fig. 1, the signal is applied through an emitter follower 500 to a two-stage amplifier 510/525, the second stage being coupled to a negative-feedback circuit 540. Diodes 545, 546 are normally conducting and provide a low impedance path back to the input of transistor 510. As the input signal increases, the two half-cycles reduce the forward bias on the diodes progressively until their impedance exceeds that of the input circuit 512 when they are cut off. The gain of the amplifier is now high. At still higher signal levels diodes 543, 544, 547, 548 become conductive and increase the negative feedback once more to provide a limiting effect as in Specification 1,137,710. The output of the amplifier is passed to a Schmitt trigger 502 to provide a bivalved output. The trigger threshold is arranged to be in the high-gain region of amplifier output, and the overall threshold level is set by resistor 512 which determines the point where the amplifier enters the high-gain region. For some applications the Schmitt trigger may be omitted. The diodes 545, 546 may be replaced by the baseemitter junctions of saturated transistors as in Specification 1,054,908 (Fig. 4, not shown). Alternatively, all six diodes 543-548 may be replaced by a pair of Zener diodes (Fig. 5, not shown). The circuit may be used in the frequency-shift data transmission system of Specification 1,137,705, as a threshold circuit to separate pulses from noise.
Patent GB-612390-A (GB)
Title: Improvements relating to the production of cyclohexane
IPC: C07C7/04
Filed: 1946-05-24
Abstract: Cyclohexane is obtained from an olefine-free hydrocarbon mixture of cyclohexane, benzene, 2.2-dimethylpentane and 2.4-dimethylpentane having a boiling range about 76-81 DEG  C., and which contains sufficient isoparaffins to form an azeotropic mixture with the benzene, by fractional distillation in a column having at least 20 theoretical plates.  A fraction is produced substantially free from benzene and of boiling range 80-81 DEG  C. which is then chilled in one or more stages within the range 0 DEG  C. to -31 DEG  C. to separate solid cyclohexane from a liquid phase rich in isoparaffins. Where the initial mixture has an isoparaffin/benzene ratio less than 53 : 47 by weight, further isoparaffins, preferably from the liquid phase of the chilling process, are added to provide at least that ratio.  An example shows the fractionation of an Iranian naphtha in a batch column equivalent to 100 theoretical plates, to give a fraction distilling between 80 DEG  and 81 DEG  C. which is then fractionally crystallized, first at -26 DEG  C. and then at -9 DEG  C., the residue from both these stages being crystallized at -26 DEG  C. Specification 608,606 is referred to.ALSO:Cyclohexane is obtained from an olefine-free hydrocarbon mixture of cyclohexane, benzene, 2,2-dimethylpentane and 2,4-dimethylpentane, having a boiling range about 76-81 DEG  C., and which contains sufficient isoparaffins to form an azeotropic mixture with the benzene, by fractional distillation in a column having at least 20 theoretical plates.  A fraction is produced substantially free from benzene and of boiling range 80-81 DEG  C. which is then chilled in one or more stages within the range 0 DEG  C. to - 31 DEG  C. to separate solid cyclohexane from a liquid phase rich in isoparaffins.  Where the initial mixture has an isoparaffin/benzene ratio less than 53 : 47 by weight, further isoparaffins, preferably from the liquid phase of the chilling process, are added to provide at least that ratio.  An example shows the fractionation of an Iranian naphtha in a bath column equivalent to 100 theoretical plates, to give a fraction distilling between 80 DEG  and 81 DEG  C. which is then fractionally crystallized, first at -26 DEG  C. and then at -9 DEG  C., the residue from both these stages being crystallized at -26 DEG  C. Specification 608,606, [Group III], is referred to.
Patent GB-811159-A (GB)
Title: Improvements in and relating to electric blasting caps and primers
IPC: F42B3/18
Filed: 1956-05-22
Abstract: 811,159. Blasting fuzes. MONTECATINI SOC. GENERALE PER L'INDUSTRIA E CHIMICA. May 22, 1956 [May 23, 1955], No. 15847/56. Class 9(1) An electric blasting cap is provided with means for preventing accidental discharge by stray currents comprising a metal sleeve 8 placed around the lead wires 5, 6 within the metal shell 1, the sleeve 8 being coated over the greater part of its outer surface with insulating material and having its inner surface in electrical connection with one lead wire by means of a conductor 10. The uninsulated part of the sleeve is thus separated from the shell by a spark gap 11 across which electrostatic charges collecting on the leads can discharge without igniting the matchhead 4a on the bridge wire 4. The shell 1 contains the usual primer charge over a detonating charge. The sleeve 8 may have a longitudinal insert of elastic material to facilitate assembly with the shell 1. Alternatively the sleeve may be formed in two parts each connected to a lead wire. In a modification two sleeves are used, one associated with each lead wire.
Patent GB-1334489-A (GB)
Title: Process for bulk polymerising vinyl chloride or vinyl chloride and another monomer
IPC: C08F14/06
Filed: 1972-04-06
Abstract: 1334489 Bulk polymerization process RHONE-PROGIL 6 April 1972 [8 April 1971] 15919/72 Heading C3P In the bulk polymerization of vinyl chloride at least part of the process is carried out in the presence of a polymerization initiator having a half life of less than one hour at the polymerization temperature which is introduced into the reaction in two fractions the first being added to the reaction and the second then being added in solution in monomer continuously and in finely divided form. The monomers may be subjected to a pre-polymerization process using high speed agitation to 7-15% conversion then as above at low speed agitation. Monomer vapours leaving the reaction may be condensed and mixed with initiator to form the initiator solution. Copolymerization with vinyl acetate and propylene is exemplified.
Patent GB-191411-A (GB)
Title: Improvements in apparatus for producing gas from petroleum or other hydrocarbons and water for heating purposes
IPC: C10G9/00
Filed: 1921-10-11
Abstract: 191,411. Robinson, E., and Robinson, M. Oct. 11, 1921. Liquid and gaseous fuel furnaces.-A front B<1> provided with a burner Y is secured to the front of a boiler by means of lugs E<2> and is provided with adjustable doors C<2> adapted to open and close upon hinges D' to regulate the inflow of air to the furnace.
Patent GB-529427-A (GB)
Title: The manufacture of a leuco-sulphuric acid ester of an indigoid vat dyestuff
IPC: C09B9/04
Filed: 1939-05-31
Abstract: 529,427. Dyes. I. G. FARBENINDUSTRIE AKT.-GES. May 31, 1939, No. 16055. Convention date, June 1, 1938. [Class 2 (iii)] A new leuco-sulphuric acid ester of the naphthothiophen series is manufactured by reducing the indigoid vat dyestuff, obtained from 8-chloro-1.2-naphthoxythiophen and isatin-α- derivatives capable of being coupled, as described in Specification 222;120, [Class 2 (iii)], and esterifying the product by means of sulphur-trioxide, or agents capable of splitting off sulphur-trioxide, in the presence of tertiary bases. In the examples (1) the coupling product from isatin-α-chloride and 8-chloro-1.2-naphthoxy thiophen is vatted and the leuco compound is treated with chlorsulphonic acid in the presence of dimethylaniline and chlorobenzene ; (2) the dyestuff obtained from 8-chloro-1.2-naphthoxythiophen and isatin-α-chloride is treated with iron powder and chlorsulphonic acid in the presence of pyridine. The ester yields black shades when printed and developed on textile fabrics.
Patent GB-384204-A (GB)
Title: Toys
IPC: A63H7/00
Filed: 1932-06-07
Abstract: 384,204. Mechanical toys. UHL, M., 24, Beethovenstrasse, Bad Mergentheim, Wurtemberg, Germany. June 7, 1932, No. 16084. [Class 132 (iii).] A mechanical toy comprises two discs b, c joined by flexible material d to form bellows, and a pair of birds b<1> or other model figures each having two legs h<1>, h<2>, one of which is attached to the body of the bird and is freely rotatable within a radial recess g in one disc, while the other is attached to the head of the bird and is freely rotatable within the body and within a radial recess in the other disc. When the bellows are compressed against the action of a spring e, the body and head of each bird turn in opposite directions relatively to each other and to the corresponding parts of the other bird. One of the discs is provided with a sound-producing device f.
Patent GB-1271986-A (GB)
Title: Improvements in or relating to air filters
Inventor: HUNT GERALD
IPC: B01D46/10
Filed: 1969-03-27
Abstract: 1,271,986. Spacer for bag filter. G. HUNT FILTRATION Ltd. 31 March, 1970 [27 March, 1969], No. 16088/69. Heading B1T. A headerless spacer for a flat rectangular fabric bag air filter comprises two mesh grids A, formed by cross-members B welded to longitudinal members C, held in spaced parallel relation by their respective cross-members being attached to opposite flanges of each of a pair of inwardly-facing parallel metal channels F which define the longitudinal edges of the spacer. The grids may be held apart between the channels by two methods: (i) as shown in Figure 1, the grids are identical each having "U" shaped kinks E formed inwardly, corresponding kinks on the two grids overlapping and being joined; or (ii) as shown in Figure 3, the spacer consists of two different grids, one grid A<SP>1</SP> having a central longitudinal cross wire C<SP>1</SP> around which fit the "U" shaped kinks of the second grid A<SP>2</SP>. The longitudinal members may be metal strips instead of wires, the cross-wires being joined to the edges of these strips, which edges are suitably curled over to avoid fraying the filter bag. The grids may be galvanised, cadmium electro-plated or coated with an epoxy or other suitable resin.
Patent GB-775771-A (GB)
Title: Apparatus for identifying opposite sides of a moving strip
IPC: G01N21/86
Filed: 1954-05-31
Abstract: 775,771. Electroplating steel strip. UNITED STATES STEEL CORPORATION. May 31, 1954 [Oct. 22, 1953], No. 16126/54. Class 41. [Also in Group XL (b)] In apparatus for manufacturing electroplated steel strip in which the opposite sides are coated with layers of different thickness and in which one side is roughened so as to indicate the nature of the coating on that side, the relative roughness of the two sides is determined photoelectrically so that in conjunction with a thickness gauge it may be checked that the thin coating is applied to the rough side. As shown, strip from a coil 2 is fed through a plating bath 6 and received on a coil 14. Two sets of anodes 16a, 16b are fed from generators 20, 22 and arranged to supply the thick and thin coatings respectively. Between coil 2 and bath 6 are photo-electric roughness gauges 30, 34 one receiving light reflected from the top of the strip (which should be smooth) and the other from the bottom. The cells control the potential drop across resistors 38, 40 respectively and thus the input potentials to a differential amplifier comprising valves 42, 44. Equality of the light received by the two cells indicates that the strip has not been roughened and a greater amount received on the lower cell indicates that the wrong side is roughened. In either case a thyratron fed with the output of the differential amplifier is fired, operating relay 58 and deenergizing relay 60 lighting lamp 84. If the lower side is roughened thyratron 54 does not fire, relay 50 is de-energized, relay 60 energized and lamps 82 illuminated. The thickness of the two layers is also checked by gauges which may be as described in U.S.A. Specification 2,603,595, and which position the moving elements of meters 24, 26. These meters carry cams which open contacts 64, 64 in the circuit of relay 60 if the thickness of the respective sides of the strip which they indicate is not within the prescribed limits. Specification 649,490 also is referred to.
Patent GB-572015-A (GB)
Title: Improvements in means for spraying or projecting powder
IPC: B05B11/06
Filed: 1943-10-02
Abstract: 572,015. Hand powder-sprays. KARK, C. L. Oct. 2, 1943, No. 16186. Convention date, Oct. 19, 1942. [Class 18] [Also in Group VI] A hand powder-spray, e.g. for projecting medicated powders on to the body, comprises an air injection bulb &c. 15 communicating at 14 with a cavity 11 in the body 17 of the article, an exit channel 12 communicating with the cavity 11 at a point laterally displaced with respect to the inlet 14. Variation in the rate of delivery may be effected by turning the powder-spray until the mouth of the exit 12 is no longer beneath the surface of the powder in the cavity. An indicating arrow may be positioned on the removable end 4 to indicate the orientation of the apparatus. The front and back walls of the cavity may be parallel instead of converging as shown.
Patent GB-1084459-A (GB)
Title: Improvements in or relating to ball or roller bearings
IPC: B21D19/08
Filed: 1966-04-13
Abstract: 1,084,459. Making bearings; stamping. KAYDON ENGINEERING CORPORATION. April 13, 1966 [Sept. 2, 1965], No. 16243/66. Headings B3A and B3Q. [Also in Division F2] A thin hardened steel bearing shell for a ball or roller bearing, has a re-heated and airhardened radially-inwardly directed flange formed at one end thereof. The shell 40, Fig. 1, is placed within a die-set 10 which comprises an upper die assembly 12 and a lower die assembly 14. The upper die assembly 12 comprises a die 16 secured to a back-up member 18 which is held by flanges 20 and bolts 22 to a mounting- plate 24. The die 16 is made of tungsten carbide and has a cavity 26, Fig. 2, having a tapered side-wall 28 and a bevelled cornerwall 30. The lower die assembly 14 comprises a die 32 which incorporates a heat-sink ring 34 and is supported on a mounting-plate 36. The die 32 and the ring 34 are provided with a cavity 38 which receives the shell 40 having outwardly-tapering side-walls. The die set 10 is mounted in a resistance welding machine, with the upper and lower die assemblies 12 and 14 serving as the electrodes of the machine. A cage 42, rollers 44 and a seal 46 are positioned in the shell 40 and the upper die assembly 12 is moved downwardly to effect electrical contact. The upper edge of the shell 40 is heated to a plastic state and then the upper die assembly is forced downwardly to deform the upper edge of the shell 40 into the radially-inwardly directed closing flange 48, Fig. 5. The heat-sink ring 34 prevents the main body of the shell from being overheated. The flange 48 shrinks upon cooling and draws the tapered side-wall of the shell radially-inwardly; and the flange 48 becomes air-hardened.
Patent GB-1102774-A (GB)
Title: Extruder head
IPC: B29C48/05
Filed: 1965-04-15
Abstract: 1,102,774. Extruder head for filaments; extrusion nozzles. BARMER MASOHINENFABRIK A.G. 15 April, 1965 [21 April, 1964], No. 16282/65. Headings B5A and B5B. An extruder head 1 having deflector means 7 for the fused mass, suitable for use in an extruder for spinning continuous synthetic filaments, is provided with a replaceable insert 2 which is arranged in an extension of the screw channel and which is seated in a bore the diameter of which is equal to or greater than that of the screw 6 and which is designed at least partly as a deflecting element for the fused mass. The insert may be provided with means for receiving one or more measuring instruments 3, and the extruder head may be heatable. Thus the heating channel 9 arranged in or round the extruder head may be directly connected to a heating system 8 surrounding distributer ducts 4 for discharging the fused mass. For pushing or pulling the screw 6 out of the apparatus, it is not necessary to detach the extruder head 1 from the cylinder 5. Only the insert 2 is removed, together with instrument 3, so that screw 6 can easily be withdrawn through the resulting opening which has a larger diameter than screw 6.