baber/WOPTO huggingface dataset:
Patent GB-634723-A (GB)
Title: Improvements in or relating to classifiers particularly for use in grinding or pulverizing solids
IPC: B07B9/02
Filed: 1947-02-05
Abstract: 634,723. Classifiers for granular materials. BLAW-KNOX CO. Feb. 5, 1947, No. 3420. Convention date, Feb. 15, 1946. [Classes 23, 59 and 117] A two-stage separation classifier for granular materials and adapted to be connected in closed circuit relation with an impact pulverizer of the endless passage type delivering downwardly therefrom a stream of gas entraining particles of various sizes comprises a housing 32 converging towards its upper and lower ends and forming a portion of the endless passage 29, 31, 30, 24, a spreader cone 33 in the housing, an outlet duct 47 communicating with the cone 33 for conducting outflowing gas and particles floating therein, and a hopper 35 for collecting the oversize particles falling through the gas. The housing 32 has a cylindrical baffle or skirt 34 depending therefrom, and the first particle separation takes place as the particle-laden gas, e.g., steam from duct 29 sweeps under baffle 34 on its way to duct 47 passing through a series of vertical guide vanes 37 spaced around the axis of the cone 33 imparting a circumferential velocity component to the steam which ascends through the neck 45 supported in the base plate of the cone 33, the steam carrying with it particles of coal which have been reduced to such size as to float in it. The second separation takes place by virtue of the larger particles falling downwardly and travelling within the hopper 35 which is supported by vanes 36 in the housing and has a helical vane 48 located therein to impart a downward velocity component to those particles which are discharged into the entrance of the tube 24. The vertical vanes 37 are angularly adjustable together by means of a handle 44 outside the housing. In the apparatus shown in Fig. 1 for supplying solid fuel to be ground and then delivered to a combustion space, the coal to be pulverized is injected by injector 12, 13 from a bin 10 to the impact grinder 14, the lower portion of which is formed by jet tube 24 which comprises an elbow having steam nozzles 28 spaced there along and adapted to deliver jets for driving the coal particles repeatedly around the grinder 14. The outlet duct 47 is connected to pipe 16 which feeds the steam laden with coal of the desired degree of fineness to a separator 17 which delivers the coal downwardly to a burner 18 from which the coal is discharged into combustion space 19 by a stream of air from a blower 20. The steam from which the coal has been largely separated is discharged from separator 17 through pipe 22 into space 19. Specification 624,648, [Group XXVIII], is referred to.
Patent GB-865147-A (GB)
Title: Display case with adjustable refrigerated shelves
Inventor: DICKSON EDGAR VAUGHAN
IPC: A47F3/04
Filed: 1958-02-03
Abstract: 865,147. Shelf-brackets. HUSSMANN REFRIGERATOR CO. Feb. 3, 1958, No. 3447/58. Class 52(5). [Also in Group XIII] Vertically adjustable refrigerator shelves 36 have down-turned ends 77 taking over ears 74 struck up from the bent over top of cantilever brackets 34 each provided on its rear edge with a pair of hooks 72 engageable with a selected pair of a series of slots 33 in a pillar 30.
Patent GB-622507-A (GB)
Title: Improvements relating to snap-acting electric switches
IPC: H01H13/36
Filed: 1947-02-05
Abstract: 622,507. Snap-action switches ; retractive switches. FIRST INDUSTRIAL CORPORATION. Feb. 5, 1947, No. 3482. Convention date, Feb. 6, 1946. [Class 38(v)] In a snap-action switch having a trifurcated blade spring 43, Fig. 1, the spring has a moving contact 20 at the junction of the three blades. The end of the inner compression blade 44 is located in a groove 46 in a terminal member 37, whilst the ends of the outer tension blades 47 are connected by an integral strip 48 which engages in a groove 49 in an actuating member 39 which is pivoted in a groove 42 in the terminal member 37. The depression of a push button 51 which bears on the actuating member, causes the spring to snap over the dead centre position, opening contacts 20, 32 and closing contacts 20, 33, the spring snapping back when the button is released. In a modification, Fig. 7, the end of the compression blade 144 engages the actuating member 139, whilst the strip 148 is engaged in a groove in the terminal 137. In both embodiments the various terminal and contact-carrying strips have projections or lugs such as 57, Fig. 5, which engage recesses in the body 21 and cover 28 so that all the switch components can be held assembled by a single rivet passing through a hole 59, Fig. 1. By altering the relative dispositions of the grooves 46, 49 in both embodiments the switch may be made non-retractive. If a dust or moistureproof enclosure is required, the actuating member 39 may be actuated through a diaphragm or bellows or by a magnet placed outside the switch body.
Patent GB-803999-A (GB)
Title: Improvements in or relating to stays for use in operating hinged windows
IPC: E05C17/32
Filed: 1955-02-05
Abstract: 803,999. Stays for hinged articles. NIBLOCK, F. Feb. 14, 1956 [Feb. 5, 1955], No. 3490/55. Class 65(1) A jointed folding stay has two arms 1, 2 pivoted to brackets 3, 12, a projection 13 on the bracket 12 engaging a slot 14 or notch in the arm 1 when the stay is folded to look a casement 6 closed. In the extended position the arms 1, 2 just pass over the dead-centre position, an operating handle 10 on the cam 2 acting as a stop. The arm 1 may be of inverted channel section so that in the folded position the arm 2 fits inside it. A spring loaded catch may be incorporated at the pivot 9 to hold the casement 6 in intermediate positions.
Patent GB-347316-A (GB)
Title: Improved means for driving apparatus such as talking picture apparatus in synchronism
IPC: G03B31/00
Filed: 1930-02-01
Abstract: 347,316. Maintaining equal speeds of motors. JOEL, H. F., 39, Beckenham Road, Beckenham, Kent, and KAYE, L. KECSKEMETI-, 51, Sudbury Avenue, Wembley, Middlesex. Feb. 1, 1930, No. 3535. Drawings to Specification. [Class 38 (iii).] Synchronism between apparatus such as kinematograph and sound-recording or reproducing apparatus is maintained by causing one apparatus to drive a generator having a delta stator winding connected in parallel to similar windings of motors driving the other apparatus, all the machines have a single-phase two- or four-pole motor winding excited from an external source. Reference has been directed by the Comptroller to Specifications 24751/12, 735/13, and 116,146, [all in Class 38 (iii), Electric motor control systems &c.].
Patent GB-1021718-A (GB)
Title: Reflective road marker
IPC: E01F9/07
Filed: 1965-01-27
Abstract: 1,021,718. Reflex reflectors. E. H. KRONE. Jan. 27, 1965 [Jan. 27, 1964], No. 3587/65. Heading E1G. A traffic marker stud has a light-reflecting lens 58 mounted within a frusto-conical shield 60 supported at the centre of a resilient diaphragm 28 anchored at its periphery to the top of a cup-shaped mounting base 20, the clamping ring 32 for the diaphragm having a depth substantially equal to the depth of the cylindrical portion of the shield 60 and the depth of the base 20 being greater than the overall depth of the shield 60. The diaphragm 28, which may be of neoprene, is substantially unloaded in the static condition as is a support spring 50, but is sufficiently strong to support the lens and shield assembly. The lens has six facets corresponding to apertures in the conical part of the shield.
Patent GB-704003-A (GB)
Title: A means for the refacing of electrical contacts
IPC: H01H1/60
Filed: 1951-02-16
Abstract: 704,003. Refacing electrical contacts. SCOTT, W. F. Feb. 18, 1952 [Feb. 16, 1951], No. 3760/51. Class 60 A means for refacing electrical contact surfaces, such as those of I.C. engine ignition systems, comprises a support 3 for setting up the contact members for grinding by a double faced abrasive strip, the contact surfaces occupying their normal contacting position on the support when separated by the strip. The fixed contact carrier plate F.P. is set up on the plate 3 by passing its pivot hole over a pin 6 until the hole registers with a part 6a of reduced diameter and ribs 7 on the plate 3 engage the normal adjustment slots of the plate F.P. After a fibre washer has been placed on the pin 6, the moving contact member is placed in position to engage a part 6b. The parts are secured by a nut and a rubber washer. The axes of the fixed and moving contact members are offset by a predetermined amount such that the contact surfaces are parallel when separated by the double-faced abrasive strip which is reciprocated between them. A screw 9, bearing against the pressure spring of the moving contact member, enables the grinding pressure to be adjusted. The plate 3 may be of metal or plastic, and when the fixed contact member is fitted with a bolt or stub, it is provided with a tapped receiving lug. The ribs 7 may be adjusted to fit different forms of plate F.P.
Patent GB-791225-A (GB)
Title: Burners
IPC: F23C99/00
Filed: 1956-02-07
Abstract: 791,225. Air supply to burners. ORR & SEMBOWER, Inc. Feb. 7, 1956 [Feb. 23, 1955], No. 3761/56. Class 75(1) A burner comprises an air plenum having concentric primary and secondary air outlet orifices and a tube connecting the primary air orifice with the opposite end of the plenum, part of the plenum air flow passing to the secondary air orifice and a part being directed in radial streams into the tube and the remaining part of the air passed from the plenum through a passage into the tube in a stream flowing axially to the primary air orifice to turbulently mix with the radial air streams. Air is delivered tangentially into an air plenum 10 through a duct 16 provided with a central valve 32, part of the air then passing through a secondary air annular orifice 82 into the combustion zone 12, another part passing through a passage 58, controlled by a pre-set valve 59, into an air nozzle 60 whence it is introduced axially into a tube 70 to mix with the remaining part of the air from the plenum 10 which passes through radial vanes 112 of an air guide 110 to enter axially spaced radially disposed apertures 75, 76 in the tube 70 to mix with the axially flowing air stream from the nozzle 60 the resulting turbulent air stream passing through the primary orifice 86 where, if liquid fuel is used, it is mixed with fuel atomized by steam or air issuing through a nozzle 106. When gas is used it is supplied through a passage 62 and an annular chamber 64 into the air streams in the tube 70, the air supply through the duct 16 is controlled by a suitable streamlined valve 32, 34. The apertures 75, 76 are arranged in rows spaced at each end of the tube 70 the total area of the apertures 70 being about one fifth of the total area of apertures 76.
Patent GB-727931-A (GB)
Title: Improvements in furnaces for the production of glass and analogous materials
IPC: C03B5/027
Filed: 1953-02-10
Abstract: 727,931. Electrode furnaces. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY & CIREY. Feb. 10, 1953 [Feb. 11, 1952], No. 3766/53. Class 39 (3)... [Also in Group XII] In a glass-making furnace of the tank type heated by submerged electrodes, convection currents are produced in the molten bath transversely of the glass flow, by disposing two electrodes 1 and 2 through one wall and one electrode 5 through the opposite wall at the same or different levels. Modifications show the use of two superposed electrodes on one side only, Fig. 2 (not shown), and one electrode disposed normally of one wall with two electrodes disposed obliquely of the opposite wall, Fig. 3 (not shown). The electrodes extend into the furnace for a distance less than half the width of the both.
Patent GB-114028-A (GB)
Title: A New or Improved Motor Plough.
Inventor: SANTLER THOMAS CHARLES
IPC: A01B3/56
Filed: 1917-03-15
Abstract: 114,028. Santler, T. C. March 15, 1917. Ploughs.-A one-way plough is provided with a motor B driving, through a clutch and variablespeed gear, an axle carrying at one end a vertically adjustable driving wheel C. A universal joint is arranged on the axle between the part driven by the motor and the part carrying the wheel in order to permit the vertical adjustment. A second and removable driving wheel C<1> may be fitted at the other end of the axle. The vertical adjustment is accomplished through a hand-wheel G<1> on a screwed rod G tilting a lever F connected by a link F<2> to a sliding block carrying the end D of the axle. The plough is steered by wheels H, H<1> mounted in pivoted forks J, J<1> adapted to be turned by the movement of rods J<3> which are operated by chains connected to a drum which can be rotated in either direction through bevel gear from the handwheels K, K<1>. The ploughs are lifted and lowered by the movement of hand-levers Q to which they are connected by links and bell-crank levers. A slot 0 is provided in the last connexion to each share to permit the share to rise or fall according to the conditions of the ground.
Patent GB-1088864-A (GB)
Title: A selvage forming machine
IPC: B21D43/02
Filed: 1965-02-26
Abstract: The subject matter is identical to that disclosed in Specifications 1,088,861, 1,088,862 and 1,088,863, but the claims are directed to a selvage-forming machine including means for feeding a sheet of fabric, means for placing a strip of thermoplastic film material on the fabric and means for applying heat and pressure to the film material on the fabric to form a seal thereon.
Patent GB-372793-A (GB)
Title: Improvements in or relating to cooling of internal combustion engines
IPC: F01M1/12
Filed: 1931-02-06
Abstract: 372,793. Cooling cylinders. WATSON, F., 43, Southampton Buildings, London.- (Aktiebolaget Spontan; Lidingo, Stockholm.) Feb. 6, 1931, No. 3813. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 7, 1931.] [Class 7 (ii).] The cylinders are cooled by lubricating oil which is circulated in a closed circuit separate from the lubricating circuit, provision being made for making up any waste in the cooling circuit from the lubricating circuit. The cooling circuit comprises a centrifugal pump 18, radiator 15 and cylinder jackets, and the circuit is connected to the lubricating circuit, comprising a high-pressure pump 19 and suction and delivery pipes 14, 13, by a pipe 20, a ball valve 23 and a pipe 22 relieving excess pressure in the cooling circuit, which thus takes place at constant pressure. Each cylinder liner comprises ribs 32 which are close together at the head end and between the liner and a correspondingly perforated outer casing 30 is placed a perforated annular packing member 34. Passages 16, 17 for supply and receipt of the cooling oil extend down the two sides of each cylinder. A groove 35 with finned inserts 37 is provided for cooling each head. Petrol may be mixed with the cooling oil.
Patent GB-1537351-A (GB)
Title: Delta modulation receivers
IPC: H03M3/02
Filed: 1976-02-02
Abstract: 1537351 Delta modulation PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 2 Feb 1976 [5 Feb 1975] 03942/76 Heading H3H In a delta modulation receiver the integration stepsize for a pulse of instant I k  depends on the preceding step size and at least one preceding pulse value, I k-1 , in addition when the relevant and preceding pulse(s) values have certain combinations the step size is also dependent on a following pulse I k+1 . In the embodiment of Fig. 1 the smaller pulse group I k , I k-1 , I k-2  is analysed in 23 and an up/ down counter 6 varies the step size by which the pulse is multiplied in 5, the result passing to integrator 7 and then D/A converter 8. If the smaller pulse group has values 111 or 000 and I k+1  has 0, or 1, respectively, the step size put to the integrator is halved by switches 4 and the following step suppressed by clock suppressor 50. In a further embodiment (Fig. 4, not shown) step size I k  is divided by 4, I k+1  multiplied by -1 from its value derived as if the analysis was made of the smaller group only.
Patent GB-1193233-A (GB)
Title: Improvements in or relating to apparatus for Coating Travelling Webs
Inventor: VEITCH STANLEY JOHN
IPC: D06B23/14
Filed: 1968-01-25
Abstract: 1,193,233. Coating webs. TRANSPARENT PAPER Ltd. 15 Jan., 1969 [25 Jan., 1968], No. 4035/68. Heading D1L. In the passage of a web through a coating bath and metering and smoothing chamber and thence through a drying tower, the bath is composed of an outer trough having a web inlet opening along one side and a liquid outlet at its base, and an inner tiltable subsidiary trough above which a liquid inlet is situated. The trough-shaped apron of Specification 1193232 may also be included inside the subsidiary trough. The coating 'liquid may be heated and may overflow from the inner to the outer trough with recycling during operation. Webs of regenerated cellulose or paper may be treated. As shown, the subsidiary trough 51 is tiltable about a pivot 52 to discharge liquid into the outer trough 46 which is lowered by means of an arm 49 pivoted at a point 50. Alternatively (Figs. 1, 2 and 3), the subsidiary trough may be attached to the outer trough and both tilted, the outer trough in this case being provided with an inturned lip (21) at the lower edge of the opening.
Patent GB-432971-A (GB)
Title: Improvements in counters for theatre cloakrooms and similar desklike despatching places
IPC: A47F9/00
Filed: 1934-02-07
Abstract: 432,971. Counters. FREUND, B., 51, Barbarossastrasse, Berlin. Feb. 7, 1934, No. 4037. [Class 116] An arrangement, for facilitating the ordered approach and departure of customers to or from a service-counter having a number of serving sections allocated to an attendant, comprises a counter provided with attached strips of material to indicate the sections at which the customers approach the counter in combination with partition members 77 above the counter and opposite those sections 75, 76 ... from which the customers withdraw from the counter. The indicating sections on the counter may be extended on the floor adjacent the counter by means of strips of material laid on the floor or worked into an existing carpet. The partitions may comprise hanging portions 77 of a curtain 80 which do not extend to the level of the counter and which may carry tablets 78<1>, 78<11>, 78<111> bearing information relating to the services provided.
Patent GB-1054631-A (GB)
IPC: C04B35/597
Filed: 1963-01-31
Abstract: 1,054,631. Refractory nitrides. MORGANITE RESEARCH & DEVELOPMENT Ltd. Jan. 22, 1964 [Jan. 31, 1963], No. 4037/63. Heading C1A. [Also in Division C7] A sintered refractory nitride with a refractory oxide bond is produced by firing in an oxygen containing or inert atmosphere a shaped mixture of the powdered nitride and a binder solution which is hydrolysable or decomposable to give a temporary bond and forms a refractory oxide bond on firing. Alternatively, the nitride may be formed in situ by firing the mixture containing the nitrideforming element in a nitrogen atmosphere. The nitrides may be those of Si, Al, B, Be, Mg, Cr, Ti, Zr, Ta, Nb and the rare earths. The binders may be hardenable organo silicon compounds such as alkyl silicate esters, e.g. ethyl silicate, organic aluminium compounds such as aluminium acetate or aluminium chloracetate and compounds such as magnesium oxychloride and magnesium oxysulphate. The amount of binder should be sufficient to produce at least 2% oxide after firing, preferably enough to form 5-15% oxide. The powder mixture may also contain additives such as SiC and carbon. The following examples are given: (1) a mixture of powdered Si 3 N 4  ethyl silicate, ethyl alcohol, HCl and a gelling accelerator triethanolamine is shaped and fired in air or in carbon at 1350‹ C.; (2) a mixture of Si, SiC and ethyl silicate as in (1) is fired in nitrogen at 1450‹ C.; (3) a mixture of SiC, Al, LiF and ethyl silicate as in (1) is fired at 1450‹ C. in nitrogen. (4) a mixture of Si, aluminium acetate and CaF2 is fired at 1450‹ C. in nitrogen.
Patent GB-840779-A (GB)
Title: Ester-exchange reactions
IPC: C07C67/02
Filed: 1957-02-06
Abstract: An ester-exchange reaction is effected by bringing two esters of formulae AB and CD, where A and C are different alcoholic residues and B and D are different carboxylic acid residues, into contact with an acidic cation-exchange material.  By this means mixtures difficult to resolve by distillation may be converted into mixtures which may be resolved by distillation.  In the preferred embodiment, a small proportion of water and/or an alcohol is fed to the acidic cation-exchange material along with the ester.  During the passage of the mixture through the catalyst bed, hydrolysis occurs and an alcoholic stream can be separated continuously by distillation from the products of reaction and recycled continuously into admixture with the fresh feed.  The proportion of water or alcohol or both present in the reaction mixture should be a minor fraction, e.g. less than about one quarter, of the stoichiometric amount which would effect complete splitting, i.e. hydrolysis or alcoholysis or both, of the esters in the reaction mixture.  Where both water and an alcohol are present, it is generally preferred that the reaction mixture should contain less than about 4 mol. per cent of water and less than about 12 mol. per cent of alcohol based on the mols. of ester present, although as a practical minimum the water and alcohol should amount to at least about 12 mol. per cent of the stoichiometric proportion necessary for complete splitting of the esters.  The preferred acidic cation-exchange materials are high molecular weight, generally cross-linked, organic resins containing free sulphonic-acid groups attached to carbon atoms, especially sulphonated styrene-divinyl benzene copolymers.  Other materials which provide a strong acid type of insoluble fixed catalyst may be used e.g. sulphonated coal.  The cation-exchange material may be employed in fixed bed or fluidized form.  It is preferably maintained at an elevated temperature e.g. 50-200 DEG  C., 90-120 DEG  C. giving the best results for a sulphonated styrene copolymer.  Superatmospheric pressure may be used.  Ester mixtures mentioned as being suitable for the process include ethyl acetate/methyl propionate, methyl acetate/ethyl formate, methyl propionate/n-propyl formate, ethyl butyrate/n-propyl propionate, methyl butyrate/propyl acetate, or propyl butyrate/butyl propionate.  It is generally desirable that the added alcohol should be one which may be derived by hydrolysis of one of the esters present in the mixture, preferably from the desired ester where the process is used for purifying one ester from another. The process may also be used to synthesize esters from other esters. It is desirable that the reaction mixture in contact with the catalyst be homogeneous.  This may advantageously be ensured by the addition of a suitable solvent such as acetone or methyl ethyl ketone, especially where a high molecular weight, highly water-immiscible ester such as glycerol tristearate is present.