baber/WOPTO huggingface dataset:
Patent GB-1026393-A (GB)
Title: Process and apparatus for the removal of volatile components from viscous liquids by evaporation
IPC: B01D1/22
Filed: 1963-01-14
Abstract: 1,026,393. Evaporation of volatile components from viscous liquids; film evaporators. ALLIED CHEMICAL CORPORATION. Jan. 14, 1963 [Jan. 19, 1962], 1651/63. Heading B1B. Volatile components are removed from viscous liquids, e.g. volatile epsilon-caprolactam from poly-caprolactam polyamide,by evaporation from a thin agitated film of the viscous polymer flowing down the heated inner surface 12 of cylinder 11 under reduced pressure, any foam formed and entained in the vapour being broken and the liquid polymer in it returned to surface 12 by the rotary action of helical ribbon 60 fixed between agitator blades 55 and separator blades 23 on shaft 51. The film of polymer on surface 12 is agitated by the rotation of agitator blades 55 at a peripheral velocity of at least 5 inches per second. The polymer feed to the evaporator 1 passes via inlet 4 into feed chamber 3 and is then distributed as a film upon surface 12, which is heated by heating jacket 14. The treated polymer passes from evaporator 1 to a heated receiver 70 via outlet 69. The vapour formed in the evaporator passes upwards into the separator chamber 2 via the passage 65 between helical ribbon 60 and shaft 51, and contacts the rotating separator blades 23 whereupon any liquid polymer still entained in the vapour is flung outwards towards the wall of chamber 2, where it is retained by the separator fin 24 and then returned to the evaporator. The vapour leaves chamber 2 via outlet 30 which is connected to a source of vacuum Via suitable condensing and recovery means (not shown). Alternatively, instead of maintaining the apparatus under vacuum, an inert gas may be introduced into receiver 70 via line 71 to sweep the vapour formed in the evaporator up through chamber 2 and out of the apparatus via outlet 30. inlet. chamber 3 and separation chamber 2 are maintained at a temperature sufficient to keep the polymer molten by a common heating jacket 15. The ratio of the length to the diameter of the evaporator is more than 2 to 1, and ratios of 4 to 1 and 8 to 1 are mentioned. The clearance between surface 12 and the agitator blades 55 can be in the range of 0.01-0.50 inches. A suitable pitch for the helical ribbon 60 is represented by a ratio of the diameter of the helix to its length of 1 to 1. One example of the process is given, illustrating the removal of epilsoncaprolactam from molten polycaprolactam polyamide at a temperature of 250-260C. and a pressure of 0. 5-1. 5 mm. of mercury.
Patent GB-1129632-A (GB)
Title: Trough system for evaporative heat exchangers
IPC: F28C1/02
Filed: 1966-01-11
Abstract: 1,129,632. Water distributing troughs in heat exchangers; refrigerating. BALTIMORE AIRCOIL CO. Inc. 11 Jan., 1966 [19 Nov., 1965], No. 1715/68. Divided out of 1,129,631. Headings F4H and F4K. [Also in Division B1] A trough having bottom and side walls from which latter, water overflows to be distributed over a heat exchange surface traversed by an evaporative air stream flowing in counterflow to the water, includes means subdividing the overflow water into a plurality of spaced-apart streams, and further subdividing means comprising an arcuate baffle 48 secured to the exterior of the bottom of the trough with its convex surface uppermost, The trough is intended for use with either direct contact heat exchangers (e.g. cooling towers) or with indirect contact tubular heat exchangers (e.g. refrigerant condensers or fluid coolers), examples of each being described (Figs. 1 and 2). The overflow subdividing means may comprise V-shaped spill notches 47 which for the two walls, may as shown be relatively staggered. Or the subdividing means may comprise a corrugated partition such as described in Specification 1,129,631. The arcuate baffle 48 may be notched or corrugated, these notches or corrugations being more closely spaced than the spill notches 47 to further subdivide the water streams.
Patent GB-130102-A (GB)
Title: Improvements relating to Files and the like.
Inventor: WHYTE SAMUEL
IPC: C23F1/06
Filed: 1918-01-30
Abstract: 130,102. Whyte, S. Jan. 30, 1918. Etching.-Files or like tools having multiple cutting-teeth, which have become worn, are renovated by etching them, with or without the assistance of an electric current, after protecting the crests of the teeth by a metallic. deposit, for instance copper or mercury. In carrying out the operation, the file may be first cleaned by dilute nitric acid, chalk is then rubbed into the grooves, and the file dipped in a bath of copper sulphate until a film or copper is deposited on the crests of the teeth. After removal of the chalk the file may be etched in strong hydrochloric acid at 80 C. A coating of mercury may be deposited on the copper-coated crests by dipping the file in a dilute solution of mercurous nitrate, before the etching. Instead of strong hydrochloric acid, a bath of equal parts of hydrochloric acid, nitric acid and water may be used, or dilute nitric acid alone. Or dilute hydrochloric or nitric acid or mixtures thereof may be used and the etching assisted by an electric current, the crests of the teeth being protected by a coating of mercury as described.
Patent GB-966231-A (GB)
Title: Improvements in or relating to washing machines
IPC: D06F39/12
Filed: 1961-01-17
Abstract: 966,231. Cabinets. SOC. ESSWEIN ET CIE. Jan. 17, 1961 [Jan. 20, 1960], No. 1826/61. Heading A4B. [Also in Division D1] A cabinet for a washing machine comprises sheet-metal side panels 1, 2 and boxsection cross-members 11-14, the lateral edge portions of the panels being folded to form box-section upright members 3-6. The cross-members are fabricated by folding and welding at the seam, and are coupled to the upright members by bolting, riveting, or welding. A sheet metal top panel 15 has a peripheral flange 16 to which the side panels are attached by screws 17. Sheet-metal front panels 18, 22 are attached to the members 4, 6 and cross -members 13 respectively, the panel 18 being attached by screws 19 and the panel 22 by hinges 23, 24.
Patent GB-1494491-A (GB)
Title: Compensation means in combination with a pulse generator circuit utilising field effect transistors
IPC: H03L1/00
Filed: 1974-01-16
Abstract: 1494491 Compensation circuit and pulse generator HITACHI LTD 15 Jan 1975 [16 Jan 1974] 2105/74 Heading H3T A compensation circuit 23 used in combination with IGFET pulse generator circuit 22 comprises an FET 19 whose drain is connected to the gates of IGFETS 12, 14 the gate of the FET 19 being connected to bias voltage. Variations in the pulse generator circuit 22 due to temperature; or MOSIC constructional variations, all the FET's being fabricated conjointly; are thus compensated. The FET 19 may be of the depletion type, the gate being coupled to ground, the resistor 21 possibly being separately manufactured, or of the enhancement type, the gate being coupled to supply V GG , in which case compensation additionally takes place for supply voltage variations. The gate of FET 19 may be connected to the junction between resistor 21 and its own drain. The compensation circuit may comprise a pair 19, 20 of FET's, or p-channel enhancement, p-channel depletion, respectively types. Circuit 11, 12 is the first inverter of a sequence of three, 11, 12; 13, 14; 15, 16, p-channel enhancement IGFETS 11, 13, 15 being connected in a ring to form the pulse generator circuit 22, changeover delay capacitors 17, 18 being provided, load IGFET's 12, 14, 16 being of the depletion type. The MOSFETS of the combination 22, 23 are all fabricated on one monocrystalline Si MOSIC chip, with externally connected resistor, and capacitors 21, 17, 18. The compensation, as applied to the pulse generator circuit, additionally compensates for pulse period, and mark/space, variations.
Patent GB-620620-A (GB)
Title: Agitating arrangements in mixing-machines for concrete of the type provided with a mixing vessel open at the top and provided with a plane bottom
IPC: B01F7/16
Filed: 1947-01-23
Abstract: 620,620. Mixing-machines. AKTIEBOLAGET BYGGFORBATTRING. Jan. 23, 1947, No. 2161. Convention date, Dec. 31, 1945. [Class 86] A concrete-mixer having a stationary drum with an open top and rotating bottom shovels 8 for mixing is characterized in that pressure springs 20 hold the shovels against the plane bottom of the drum. A plate 7 having a central cylindrical flange 17 is secured to the vertical driving shaft and the arms 9 of the shovels 8 are in bearings 11, 12 on the plate 7 and are bent so that the shovels 8 lie near the bottom of the drum. Horizontal portions of the arms 9 carry vertical cross-bars 15 through which bolts 16, secured to the flange 17, slide. A pressure spring 20 lies on each bolt between the cross-bar 15 and nuts 18 at the end of the bolt and urges the shovels into engagement with the drum. The nuts 18 enable the pressure of the shovels to be adjusted. The gearing of the machine consists of two motor car differentials. The driving shaft of the shovels is one output shaft of a differential gear, the other output shaft being locked, and the input shaft is connected to an output shaft of another differential, its partner being locked; the input shaft of this differential is connected to a motor.
Patent GB-459620-A (GB)
Title: Improvements in and relating to phase shifting circuits
IPC: H02M1/04
Filed: 1936-01-23
Abstract: 459,620. Phase-changing. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Jan. 23, 1936, No. 2185. Convention date, Jan. 25, 1935. [Class 38 (ii)] A phase - shifting bridge comprises a pair of impedances as adjacent arms with opposite arms formed respectively by a variable impedance and a variable resistance with means for varying only one of the elements, the arrangemeni being such that the other varies simultaneously. The phase shifting bridge has twc arms formed bv the centre tapped secondary of the sup ply transformer 19 and the other two arms formed re spectively by a saturable choke 20 and a resistance, such as lamps 23, 24 having tungsten filaments the value of which varies with current. Adjust ment of the impedance of the choke causes an inverse variation of the resistance of the lamps. By this means a larger variation in phase for a given adjustment of the choke 20 is obtained. Reference has been directed by the Comptroller to U.S.A. Specification 1,893,771.
Patent GB-1456640-A (GB)
Title: Hose manufacture
IPC: B29C49/00
Filed: 1973-01-16
Abstract: 1456640 Corrugating hose DUNLOP Ltd 16 Jan 1974 [16 Jan 1973] 2201/73 Heading B5A [Also in Division F2] A tube is corrugated by method and apparatus substantially as described in Specification 647,084. The restraints provided by the ribs of the inflating box can be supplemented by restraining collars r, r<SP>1</SP> to provide non-corrugated portions of tube. The improvement resides in the use of a tube of polymeric material having a reinforcement structure embedded within the wall of the tube so as to be surrounded by polymeric material. As described an inner layer of styrene butadiene rubber is extruded on to a perforated mandrel b, a middle layer of woven rayon polyester or polyamide diptreated with latex resorcinol formaldehyde is applied and covered with an extruded outer layer of chloroprene. The formed corrugations are circular or helical.
Patent GB-393896-A (GB)
Title: Process of manufacturing aluminium and barium or strontium compounds
IPC: C01F7/168
Filed: 1933-01-23
Abstract: In the production of barium or strontium aluminate by calcining at say 1100 DEG  C., a mixture of barium or strontium sulphate and bauxite, clay, kaolin, &c. with the addition of lime to bind the silica and with or without the addition of carbon, the sulphate and aluminiferous material are used in such amounts that in the aluminate obtained the molecular ratio of BaO or SrO to Al2O3 is approximately 1.75 : 1.  The sulphate used may be replaced by sulphite which may be obtained by treating barium or strontium carbonate with the sulphur dioxide obtained in the calcining operation.  The sintered product of the latter is brought into solution and a mixture of aluminium hydrate and barium or strontium carbonate precipitated by carbon dioxide which may be that obtained by burning limestone to provide lime for use in the process.  The mixed precipitate may be treated with caustic soda to bring the aluminium hydrate into solution, or with sulphuric acid to obtain barium or strontium sulphate and a solution of aluminium sulphate; or be calcined to render the alumina insoluble, and then be treated with an acid such as hydrochloric acid to bring the barium or strontium into solution, from which the sulphate may be obtained by means of sulphuric acid.  Alumina or the barium or strontium sulphate recovered may be returned to the process.
Patent GB-988282-A (GB)
Title: Improvements in and relating to oscillating-disc volumetric pumps or fluid meters
IPC: F04C9/00
Filed: 1962-01-22
Abstract: 988,282. Rotary oscillating disc pumps. J. MULLER. Jan. 22, 1962 [Jan. 31, 1961], No. 2262/62. Heading F1F. An oscillating disc pump or meter comprises a part-spherical casing having an outer spherical surface 46, Fig. 1, and inner spherical surfaces 44, 45 co-operable with half-shells 7, 8 formed with disc parts 5, 6 which co-operate with the surface 46 and conical casing surfaces 20, 21 The half-shells 7, 8 enclose a spherical fulcrum 9 carried on a pin 10 and carry a crank-pin 4 supported by a ball-bearing 16 mounted in a housing 15 whose position may be adjusted with respect to a fork 2 by means of an adjusting screw 11 to vary the loading on a spring 3. The fork 2 is carried on a driven or drive shaft 1 in axial alignment with the pin 10. Adjustment of the screw 11 permits rational application of the oscillating disc parts 5, 6 against the conical faces 20, 21 of the casing which also includes a separation plate 43 preventing rotation of the disc parts 5, 6 and inlet and discharge parts so that on oscillation of the disc parts, fluid is pumped or metered through chambers 48, 50. In another embodiment, a pointed adjusting screw 28, Fig. 2, passing axially through the driven or drive shaft engages a plunger 25 loaded by Belleville washers 29 which engage the inner surface of a bearing ring 30. Adjustment of the screw 28 moves the plunger 25 in its bore. In a further embodiment the disc parts are faced with resilient discs having a plurality of recessed slits to provide radial and circumferential ribs.
Patent GB-161346-A (GB)
Title: Improvements in plug cocks or valves
IPC: F16K5/02
Filed: 1920-01-24
Abstract: 161,346. Eaton, T. Jan. 24, 1920. Plug cocks. - The plug 1 of a valve is provided with an inlet port 2 in its side, which registers with the inlet port 7 in the casing, and with an outlet port 3 in the bottom opening into the space 8<x> in the casing. The outlet port 8 is placed opposite to the inlet port 7. The side of the plug opposite to the port 2 is recessed at 11 for the width of the port 7, and the interior of the casing is provided with a similar recess 13. These recesses are not machined, and the skin left on the metal after casting is found to resist erosion by the liquid. The valve is opened or closed by a rotation of 180‹.
Patent GB-229072-A (GB)
Title: An improved tobacco pipe
IPC: A24F1/00
Filed: 1924-01-29
Abstract: 229,072. Parker, P., and Polkinhorn, A. Jan. 29, 1924. Tobacco pipes.-The stem f of aluminium, meerschaum, or other rigid washable material is termed with a dished portion d forming a nicotine trap and having a circular lip e slightly above the stem itself. The base i of the portion d forms a continuous surface with the lowest portion of the large stem-bore g. The lip e engages frictionally a wood or other bowl a, shouldered at c and having a flat or substantially flat base b and an inclined smoke-passage k. The parts are so shaped as to form flush surfaces at their joints. Specification 594/91 is referred to. The Provisional Specification describes the bowl a as pushed, screwed, or otherwise held in the portion d.
Patent GB-610729-A (GB)
Title: Improvements in wall plugs and bolt fastenings
IPC: F16B13/06
Filed: 1946-01-24
Abstract: 610,729. Wall &c. plugs. RULE, T. B. Jan. 24, 1946, No. 2313. [Class 89 (i)] A wall &c. plug to serve as a bolt anchor comprises a bush having one end slit at h, serrated at l, and tapered internally to receive a correspondingly tapered nut or bolt head b having flats d to prevent relative rotation. The slit part terminates in external and internal grooves forming a square neck about which the segments between the slits bend during expansion. A slot is provided to hold the bush against rotation whilst the bolt is tightened. In a modification the nut or bolt head flats are replaced by lugs sliding in the slits. A ferrule or a ring is sprung into a groove to prevent the nut &c. from falling out of the bush.
Patent GB-974919-A (GB)
Title: Improvements in the formation of electrically conductive coatings
IPC: C09D5/24
Filed: 1963-01-18
Abstract: A method of forming an electrically conductive mass comprises adding particles of or coated with a noble metal to a liquid resin binder in situ and curing the resin, the particles being spherical with a mass: surface area between 0.0001 and 0.3 lbs/sq. ft. and a particle size between 0.1 and 10 thousandths of an inch whereby they will overcome the surface tension of the resin and come into contact with one another. The method may be used for making electrical connections in situ especially where a conventional pre-mixed paste of resin and conductive particles would be too viscous.  The particles may be solid silver, gold or platinum or copper or iron coated therewith and will usually constitute 40 to 67 volume per cent. of the mass. In examples the resin binder is an epoxy resin consisting of 20% o-cresol glycidyl ether and 80% diepoxide of bisphenol-A with 14% triethylene tetramine by weight of the resin as hardener and the particles are copper replacement plated with 5% silver having an average particle size of 2 thousandths of an inch and a mass: surface area of 0.022 lbs./sq.ft. Examples I, II and V illustrates the application of the invention to the formation of electrical connections for an electroluminescent panel, aluminium foil wrapped condensers and tantalum slug capacitors in protective aluminium cans; Example III illustrates a radar reflective coating formed by coating a phenolic-impregnated board with the epoxy resin and dusting on the particles; and Example IV illustrates the moulding of a 15 pin R.F. cable connector body by filling a mould with the epoxy resin and pouring in the particles.
Patent GB-100149-A (GB)
Title: Improvements in Mangles.
IPC: D06C15/00
Filed: 1915-03-25
Abstract: 100,149. Whittaker, W., Booth, J. H., and Whittaker Bros. March 25, 1915. Mangles, boards for.-The drip board and back board of a mangle are made adjustable to any position by means of interlocking crown-wheels B on the boards and frame respectively. The wheels are held together by a bolt and wing-nut.
Patent GB-231274-A (GB)
Title: Improvements in bread cutting machines
IPC: B26D1/08
Filed: 1924-10-25
Abstract: 231,274. Heenan & Froude, Ltd., and Walker, G. H. Oct. 25, 1924. Cutting slices in succession. - A bread slicing machine of the type wherein a loaf descends in a vertical, or substantially vertical shoot and is cut by a reciprocating knife carrying an adjustable fence, is provided with two bread shoots C', C<2>, a diamond shaped knife A having cutting-edges a<1>, a<2>, and two fences or tables F<1>, F<2> having an aperture, shaped similarly to the knife, between them. The tables F<1>, F<2> are adjustably carried on pivoted levers f secured to the knifecarrying frame G which is slidable on guides H by a connecting rod j and crank J. A suitable guard covers the knife and reciprocating parts.
Patent GB-1217502-A (GB)
Title: Improvements in or relating to logic circuits
Inventor: HORNE PETER ROBERT
IPC: H03K23/00
Filed: 1967-01-18
Abstract: 1,217,502. Bi-stable circuits. PLESSEY CO. Ltd. 17 Jan., 1968 [18 Jan., 1967], No. 2577/67. Heading H3T. [Also in Division G4]  A logic circuit comprises two tiers and two ranks and is driven by out-of-phase clock pulses to two inputs to adopt four stable conditions sequentially.  True and inverse clock pulses CP, CP are applied to VT21, VT22 to control transistor circuits VT5, VT6 and VT15, VT16 which constitute the lower tier, and VT1-VT4, VT7, VT8, VT11-VT14, VT17, VT18 constituting the upper tier. The lefthand of two like bi-stable circuits comprises crosscoupled pair VT1, VT2 with level-shifting coupling transistors VT3, VT4. Switching is dependent on a long-tailed pair VT5, VT6 and gating transistors VT7, VT8 controlled by the state of the right-hand bi-stable element via leads D 2 <SP>1</SP>, #D 2 1. If the potentials on leads D 1 , D 1 , D 2 , D 2  initially correspond to logic states 0101 then four successive pulses CP, CP, CP, CP change the states to 1001, 1010, 0110, 0101. Outputs can be taken from either bi-stable element to a similar circuit forming the next stage of a binary counter.
Patent GB-547488-A (GB)
Title: Improvements in and relating to the moulding of articles from thermosetting plastic material
IPC: B32B27/00
Filed: 1941-02-26
Abstract: 547,488. Moulding reinforced synthetic resin articles. BOULTON PAUL AIRCRAFT, Ltd., and NORTH, J. D. Feb. 26, 1941, No. 2581. [Class 87 (ii)] In moulding laminated articles from thermosetting moulding powder and wood, paper, textile fabric or like fibrous material impregnated with thermosetting plastic material, the moulding powder is compacted at room temperature into a coherent body conforming substantially to the final shape of the article, or into sheets, and is disposed to cover the whole of one face of a layer or laminated thickness of the impregnated fibrous material, whereby during the moulding operation the flow of the fused moulding powder is reduced to a minimum where it is in contact with the face of the impregnated fibrous material. The compacted moulding powder may be disposed between two layers or laminated thicknesses of impregnated fibrous material. The compacting may be effected in a separate punch and die made of wood or plaster. The moulding powder and impregnated fibrous material may be preformed together before being placed in the heated mould.
Patent GB-371062-A (GB)
Title: Machine for warp knitting
IPC: D04B23/00
Filed: 1931-01-26
Abstract: 371,062. Knitting-machines. MURMANN, S. P., 20, Niels Ebbensvej, Copenhagen. Jan. 26, 1931, No. 2585. Convention date, Jan. 28, 1930. [Class 74 (ii).] The thread guide bars 4; 5 of a warp machine having parallel needle beds are moved alternately to the left and right by means of discs 36, each disc having a projection 38 thereon, so arranged that one thread guide bar remains at rest while the other is in operation. The needles 12 of one bed 7 are actuated by a crank 46 and rods 47, 48, 50, 51, 53, and the needles of the other bed 6 are actuated by links 56 .. 62 from the rod 51 in such manner that one set of needles is idle while the other set is operative. The threads before passing through the guides in the bars 4, 5 are passed through pivoted feeler members, so that when a thread breaks a feeler falls to stop the machine.