baber/WOPTO huggingface dataset:
Patent GB-621048-A (GB)
Title: Improvements in or relating to radio receivers or similar adjustable electrical apparatus
IPC: H03J1/04
Filed: 1946-04-10
Abstract: 621,048. Optical receiving devices. PHILIPS LAMPS, Ltd. April 10, 1946, No. 11011. Convention date, Sept. 4, 1941. [Class 97 (i)] (Also in Group XL (c)] A radio receiver or similar adjustable electrical apparatus, e.g. a measuring bridge, comprises a tuning or similar scale pivoted about a horizontal axis on top..of the cabinet of the apparatus, an optical indicating member, e.g. a magic-eye tuning indicator or a zero point indicator rigidly mounted in the front wall of the cabinet and which may be viewed simultaneously with the said scale, and a diverging lens, preferably with a prismatic component, mounted in the front wall of the cabinet and in front of the optical indicator for extending the viewing angle of the indicator so as to comprise the viewing directions of the scale in which a true recording thereof may be obtained having regard to parallax considerations. As shown, a, diverging lens 2 with a prismatic component and preferably of polystyrene is mounted in a circular aperture in the front wall I of the cabinet of a radio receiver, a tuning indicator 3 also being mounted in said wall by a bracket 42 which is removably attached to a wall bracket 44. On the top wall of the cabinet is mounted on a shaft 30 the tuning scale 5, the pointer of which may be connected to a tuning device by a pulley and a rope and chain which extends into the cabinet through the aperture 34. The scale 5 may be of glass and may be edge illuminated.
Patent GB-986710-A (GB)
Title: Flexible cellular polyurethane structures
IPC: C08J9/02
Filed: 1963-03-20
Abstract: Flexible cellular polyurethanes are prepared by reacting together a polyfunctional polyol having a hydroxyl number of at least 70 and an equivalent weight of less than 800, an organic polyisocyanate, and water, in proportions such that the initial ratio of isocyanate groups to the active hydrogen groups in the water and the polyol (the NCO/[H] index), is less than 0.9 : 1, and such that give a product with a ratio of urea groups/urethane groups of less than 3 : 1. Appropriate polyols have -OH numbers of 70-350, preferably 100-200, an equivalent weight of 180-800, preferably 280-560, and are preferably trifunctional (i.e. triols); suitable polyols are polymers of alkylene oxides (e.g. ethylene oxide, propylene oxide, butylene oxide, and mixtures thereof), and addition products of alkylene oxides with polyfunctional alcohols (e.g. glycerine, trimethylol propane, hexane triol, pentaerythritol). Also mixtures of polyols, wherein some components have -OH numbers outside the preferred range, but together have an average -OH number within the preferred range, may be employed.  Polyisocyanates used are preferably liquid di-isocyanates.  The preferred amount of polyisocyanate used is partly dependant upon the proportion of water employed, this in turn being varied according to the -OH number and molecular weight of the polyol, and also to some extent according to the properties required for the foam.  Generally, the higher the hydroxyl number of the polyol, the lower is the preferred ratio of isocynate groups to total active hydrogen groups present, in order to preserve flexibility of the product.  This NCO/[H] index ranges from about 0.9 : 1 for an -OH number of 70 to less than 0.5 : 1 for an -OH number of above 200. The proportion of water preferred decreases as the -OH number of the polyol rises, and water content is desirably kept at the minimum compatible with final hydrolytic stability of the foam.  The density of the foam may be controlled by incorporation of a blowing agent at up to 20% of the weight of the polyol used; this is suitably a fluorinated saturated aliphatic hydrocarbon, volatile at polymerization temperatures and inert to the other reactants and the foamed product.  Other ingredients may be introduced into the reaction mixture, such as polymerization catalysts (e.g. tertiary amines, and organo tin compounds), fillers, extenders, fire retardant agents, and emulsifiers such as sulphonates, lecithin, polyethylene phenol ether, polyalcohol carboxylate esters, and preferably, siloxane oxyalkylene block copolymers.  The polymers are cured by standing at ambient temperatures for a few days, or heating in an oven, e.g. at about 150 DEG  C., for a period of minutes.  Examples are given for preparation of several foams, and for testing the physical properties thereof.  Uses of the foams derive from their properties of special resilience, softness and high degree of flexibility.
Patent GB-715673-A (GB)
Title: Apparatus for mine roof control
IPC: E21D23/00
Filed: 1949-04-26
Abstract: 715,673. Hydraulic apparatus. JOY MANUFACTURING CO. April 26, 1949 [Oct. 6, 1948], No. 11087/49. Class 69 (2). [Also in Groups X, XXX and XXXI] A hydraulic mine roof supporting jack holding wheeled frames against the mine floor and roof is moved forward by a cylinder 24 abuting against an abutment jack 23 engaged with the mine floor and roof. The cylinder 24 and jack 23 are operated by a portable power-operated pump, the jack 23 being supplied through the hollow piston rod 149 of the cylinder 24 by means of a passage 159, a tube 160 sliding in the piston rod and a pipe 140. Roof load sustaining jacks 33, 33' are extended by a hand pump 90 and enclose an accumulator 71 comprising a flexible bag 73 charged with gas under pressure and in communication through a passage 75 with the operating space 80 of the jack cylinder. When the pressure in the space 80 is sufficiently low a valve 76 on the bag 73 seats on and closes the passage 75. When the pressure increases above a certain value the valve opens and the accumulator acts as a pressure relief for the jack. On further pressure increase a relief valve connects the space 80 to a hydraulic reservoir. The hand pump 90 is associated with a reservoir of liquid and a control valve for supplying either or both jacks 33, 33'. Relief valves are provided between the supply and return pipes. Specification 706,002, [Group XXX], is referred to.
Patent GB-455480-A (GB)
Title: Improvements in knives
IPC: B26B9/02
Filed: 1936-04-20
Abstract: 455,480. Knives. SPRAGUE, E., 851, North State Street, and ARTHUR, (nÚe LUTZ), G. L., 1523, Addison Street, both in Chicago, and TICKTIN, L. L., 211, North Oak Park Avenue, Oak Park, both in Illinois, U.S.A. April 20, 1936, No. 11291. [Class 30] The knife blade is made with a series of ridges 3 each of which terminates in a blunt point 7. The part 8 between the point and the next ridge is made very sharp, the points 7 acting as guards to prevent damage by said sharp edges. The handle is narrowed at 22 so that the ridge so formed acts as a guard.
Patent GB-610651-A (GB)
Title: Improvements relating to cloches
IPC: A01G13/04
Filed: 1946-04-12
Abstract: 610,651. Cloches. SHARP, W. R. April 12. 1946, No. 11321. [Class 20(i)] A multiple cloche comprises a supporting frame having horizontal and vertical members, the latter being adapted to enter the ground, to locate the horizontal members, which lie along the surface of the ground and support a series of pairs of transverse lights. In one form of the cloche shown in Fig. 3 the horizontal members 17 are formed with a series of upward projections 17a, 19 which support the lights 13, the end portions of the members 17 being bent downwards to form spikes 3 for entry into the ground. In another form srown in Fig. 1, two horizontal members 1 are provided with spaced uprights 2, and a transverse framework 6 at each end of the members 1 provides support for a rotatable rod 9 provided with short distance pieces 11 on arms 10. The ends of members 11 in their lowermost positions abut against converging pairs of lights 13, the upper edges of which abut against the arms 10, so that rotation of the rod 9 forces the lights 13 apart and thus provides ventilation. Additional members 12 may be provided on the rods 9 to sup port the lights when in maximum open positions. Thermostatic control means may be provided for automatic control of the ventilation.
Patent GB-235161-A (GB)
Title: A firing device for aircraft bombs and other projectiles
IPC: F42C1/02
Filed: 1925-05-01
Abstract: 235,161. RÚmondy, L. E. June 7, 1924, [Convention date]. Projectile fuzes. - A momentum-action percussion fuze A is arranged at the rear end of a tube B and moves forward and strikes an anvil c' at the front end of the tube when impact occurs. The percussion cap G and the firing-pin H are held away from each other by a spring K and a washer j in a known way and this assemblage is attached to the fuze body A or mounted against a spring I therein. The fuze body A is locked in the safe position shown by a collar L which is normally held closed by jaws L<2>. When the bomb is dropped from an aircraft, the jaws L<2> are pulled out by a cable M connected to the aircraft, and the collar L is opened out and detached by a spring N. The fuze body A is now capable of moving forward on impact, but is still held hack until this occurs by a yielding spring catch E. The rear end of the fuze body may be covered by a cap attached to one member of the collar L, the arrangement of which is similar to the arrangement described in Specification 233,262. Specification 172,326 also is referred to.
Patent GB-716522-A (GB)
Title: Improvements in or relating to plain bearings
Inventor: LOVE PHIL PRINCE
IPC: F16C32/06
Filed: 1953-04-30
Abstract: 716,522. Bearings. GLACIER METAL CO., Ltd. April 30, 1953 [May 6, 1952], No. 11402/52. Class 12(1) In a plain bearing of the kind in which the sur-. face is faced with or incorporates a solid lubricant, at least three circumferentially spaced axial grooves 2 are provided in the bearing surface, each groove tapering in cross section in the direction of rotation of the journal from a maximum depth to zero depth, and means is provided for metering air or other gaseous medium under pressure to each groove. The grooves 2 may extend substantially the length of the bearing, or formations of axially spaced'grooves 2 may be provided as shown in Fig. 4. The grooves may be wedge-shaped as in Fig. 2, or may be of maximum depth at mid-section as shown in Fig. 3. Fluid is fed under pressure through a pipe 7 to an annular passage 5 in the bearing housing 6 from which it is metered through passages 4 to the respective grooves 2. A flange 11, Fig. 5, may be provided at one or each end of the bearing, constituting a thrust bearing, and the grooves 2 are extended and disposed radially outwards in the face of the flange. The solid lubricant may be poly-tetra-fluoro-ethylene, a chloro-fluorocarbon, molybdenum disulphide, or tungsten disulphide.
Patent GB-806268-A (GB)
Title: Improvements in plasticization of perfluorochloroolefins
Inventor: SMITH RICHARD AUGUST
IPC: C08L27/12
Filed: 1956-04-16
Abstract: A synthetic resin composition comprises a normally solid thermoplastic homopolymer or copolymer of a perfluorochloro-olefin containing above 20 mol. per cent of a perfluorochloroolefin copolymerized with another halogenated olefin, plasticised by a copolymer containing above 5 mol. per cent of a fluoro-olefin, preferably a perfluorochloro-olefin, copolymerized with another halogenated olefin containing at least two hydrogen atoms per molecule, and containing a higher percentage of hydrogen and a lower percentage of fluoro-olefin than the homopolymer or copolymer plasticized.  The perfluorochloro-olefin in the plasticised homopolymer may be trifluorochloroethylene, 1,1-dichloro-2,2-difluoroethylene, 1,2-dichloro-1,2-difluoroethylene, or trichlorofluoroethylene, and in the plasticiser the fluoro-olefin may be any of the above or trifluoroethylene.  The halogenated olefin in either the plasticiser or plasticised copolymer may be vinyl or vinylidene chloride or fluoride or 1,1-fluorochloroethylene.  Polymer and plasticiser may be admixed in finely-divided form or by a wet-blending technique in the presence of a solvent such as tetrahydrofuran or a mixture of solvents such as tetrahydrofuran and dioxane or xylene.  The plasticiser may be cross-linked by incorporating a cross-linking agent before admixture with the polymer or copolymer to be plasticised, cross-linking being effected by heating after admixture; the cross-linking agent may be ditertiary butyl, dilauryl, di-benzoyl, hydrogen, lead, barium or zinc peroxide, ditertiary butyl hydroperoxide, magnesium, zinc or lead oxide, an alkali metal or ammonium polysulphide, an alkyl or aryl perbenzoate or persulphate or a diamine such as ethylene, diethylene or hexamethylene diamine or diamino stilbene. Specification 755,788 is referred to.
Patent GB-705192-A (GB)
Title: Improvements in or relating to couplings for electromagnetic waves between coaxial transmission lines and wire waveguides
IPC: H01P5/08
Filed: 1951-05-18
Abstract: 705,192. Waveguides. GENERAL ELECTRIC CO., Ltd., and DYOTT, R. B. May 9, 1952 [May 18, 1951], No. 11685/51. Class 40 (8) A coaxial line is coupled to a single wire waveguide 2, which is continuous with the central conductor 3 of the coaxial, by a metal horn 15, fitted to and diverging from the outer conductor of the coaxial, a dielectric sleeve 29 being mounted on the wire guide near, but not in contact with, the horn 15. This sleeve is found to improve the coupling for a given frequency, or band of frequencies dependent on its length and position. The length of coaxial line in the construction shown, forms a short intermediate link between the wire guide 2 and an ordinary tube wave guide 1, the inner conductor of the coaxial being connected to across bar 6 in guide 1. The latter is provided with tuning pistons 4 and 23 for matching purposes.
Patent GB-238284-A (GB)
Title: Machine for embossing and pleating textile and other fabrics
IPC: D06C23/00
Filed: 1924-05-12
Abstract: 238,284. Golden, M. R. May 12, 1924. Pleating.-A machine for embossing or pleating textile or other material, in which heated embossing discs or rollers are adapted to articulate when rotated, is provided with means for separating the rollers to facilitate insertion of the fabric to be embossed, and with means for maintaining in driving relation a train of gears connecting the rollers, so that the embossing- rollers will articulate correctly when returned to their initial position. The roller shafts C, C<1> are journaled in bearings D, D' slidable in side frames A. The shaft C<1> is driven from the main shaft Ha and drives the shaft C through gearing K<a>, M. J. K. Arms 1, Ia, sleeved on the shafts C, C' respectively carry the gears M, J and are joined at their ends by a link M<a>, this arrangement serving to keep the driving connections between the shafts C, C<1> in mesh when the shafts are separated to introduce the fabric and ensuring that the embossing surfaces articulate correctly when they re-engage. The shaft C is lifted when desired by a hand-operated cam L engaging extensions I<2> on the arms I. The pressure between the rollers can be adjusted by screws Fa engaging springs F which shut against the bearing D. The fabric, before passing to the embossing roller, is steamed from a perforated pipe T, and it may also be sized by a suitable sizing agent introduced with the steam. Electrical heating units are mounted inside the shafts C, C' and are supplied with current through brushes on frames pa, pb, pc. By means of a switch Q, the units of the two rollers can be connected in series or in parallel. A yoke-shaped member, partially filled with mercury. straddles a collar on the shaft C, and a thermometer R having its bulb in the mercury serves to indicate the temperature of the rollers. Each shaft C is hollow and has keved thereto a number of discs E carrying the design and articulating with the discs on the other shaft.
Patent GB-812688-A (GB)
Title: Improvements in or relating to pressure exchangers
IPC: F04F13/00
Filed: 1955-04-22
Abstract: 812,688. Pressure exchangers. SPALDING, D. B. April 10, 1956 [April 22, 1955], No. 11764/55. Class 8(1). In a pressure wave operated pressure exchanger a substantially centred pressure wave system is created and exists substantially only in cells moving past a plurality of adjacent pors. In the embodiment shown in Fig. 2 expansion waves 16, 17 initiated by opening of the edge 14 of an extraction duct 15 are reflected at the opposite end of the cells and the reflected waves coincide with duets 20 the pressures in which decrease in the direction away from the duct 15. In Fig. 3 compression waves 25, 26 initiated by opening of the cells to ducts 21 having increasing pressure in the direction towards duct 22 are reflected and the centre of the waves coincides with the closing edge 24 of the duct 22. In Fig. 4 expansion waves 16, 17 are reflected and coincide with ducts 20 which are directly connected to ducts 21 which initiate pressure waves 25, 26 the centre of which coincides with the closing edge of the duct 22. Several embodiments are described similar to that shown in Fig. 7 in which expansion waves 17 initiated by the opening of the cells to the duct 11 coincide with ducts 31 which are cross connected to ducts 32 which ducts initiate pressure waves the centre of which coincide with the closing edge of the duct 23. Several embodiments involving contra rotating cell rings are described. In the embodiment shown in Fig. 10 the above features are incorporated as shown. In the case of the opening of duct 61 which duct is connected to a turbine 63 the generated waves coincide with ducts 62 which are connected to decreasing pressure stages of the turbine 63. Fig. 12 illustrates a practical arrangement of the main and subsidiary ducts diagramatically shown in Fig. 2.
Patent GB-542667-A (GB)
Title: Improvements in d.c. electric motors
IPC: H02K23/10
Filed: 1940-07-17
Abstract: 542,667. Motors. ENGLISH ELECTRIC CO., Ltd., and FENEMORE, A. S. July 17, 1940, No. 11819. [Class 35]  In order to give a motor running on a steady supply voltage a drooping speed-torque characteristic which falls at first gradually from a maximum speed and then increasing steeply to a maximum torque at zero speed it is connected in series with means for producing a voltage drop proportionate to the armature current in combination with a constant-current winding giving a shunt characteristic and an opposing winding carrying the motor current or a shunted part thereof. In place of the two separate windings, one field winding having the same effect may be employed. Fig. 1 shows a motor 1 with a shunt winding 1a, an opposing series winding 1b, and a series resistance 3. Instead of the resistance 3 a series wound machine driven at constant speed may be employed. The exciting arrangements described may be applied to an exciter for the motor instead of to the motor directly, and an adjustable rheostat may be placed in the exciter circuit. Fig 5 shows an arrangement employing a single field coil 1d connected in series with part or all of the series resistance 3 and in shunt to the motor armature and the remainder of the resistance. Fig. 6 shows the use of the motor 1 on any one of a series of steady voltages given by a Ward-Leonard generator 2. The motor has a separately-excited coil 1a and the series resistance 3 has taps and switches 8 operated by the controller 7 which governs the generator excitation. Reversal is effected either by reversing the motor armature or by reversing the generator polarity together with the connections of the series coil 1b by means of the switches 9. The resistance 3 may be replaced by a series machine driven by a motor with its armature across the Ward-Leonard generator and having an independently excited field. In this form, and that shown in Fig. 6, the windings 1a, 1b may be transferred to a separate machine which excites the main motor 1. Speed regulation of the motor may also be obtained by a variable resistance in the exciter. In the form shown in Fig. 9, a series machine 3a, driven by the Ward-Leonard generator 2, acts, at constant speed of the generator 2, as a constant resistance. This arrangement is chiefly applicable when the generator 2 gives a substantially invariable voltage and speed control of the motor 1 being given by the field variations, for which purpose the shunt and series component field windings are preferably transferred to an exciter.
Patent GB-797162-A (GB)
Title: Magnetic sheet detecting means
IPC: G01V3/08
Filed: 1956-04-18
Abstract: 797,162. Electric tests. BUDD CO. April 18, 1956 [April 18, 1955], No. 11844/56. Class 37. In apparatus for detecting the number of magnetizable sheets in a stack or charge, the number of sheets presented to a search magnet determines the amplitude of a current which is fed, in opposition to a standard current, to one or more differential relays which operate to stop related machinery if an incorrect number of sheets is presented; means for adjusting the apparatus for different sheet thicknesses and various fail-safe devices are provided. As shown, the closure of a switch LS-2 when a feeler F is brought down against the top of the sheet charge by a sheet lift (not shown) energizes a relay.BB to supply A.C. via a variable autotransformer 13, the output of which is adjusted for differences of sheet thickness, to a circuit containing a search magnet 12, whose inductance varies with the number of sheets in the charge, and the primary of a transformer 24, the output of which is dropped across a resistor 29 which is tapped to feed current through a full-wave rectifying device 25 to differential relays EE, FF, in opposition to a standard current supplied via transformers 15, 16 and a rectifying device 17. As described, contacts ee will be closed if fewer than two sheets are presented, and contacts ff will be closed unless no sheet is presented. If contacts ee or ff are open during a check period when a switch LS-4 is opened, a relay DT will not be energized and the supply to a relay coil T will be interrupted, stopping the sheet lift. A failure of the standard current supply de-energizes a relay DD with a similar result. A capacitor 28 is placed in the secondary circuit of the transformer 24 to improve the power factor and eliminate harmonics.
Patent GB-1197345-A (GB)
Title: Drive Assemblies for Motor Vehicles
Inventor: STOTT THOMAS CHARLES FELIX
IPC: F16H3/091
Filed: 1968-03-12
Abstract: 1,197,345. Change-speed gear. VAUXHALL MOTORS Ltd. 27 Feb., 1969 [12 March, 1968], No. 11940/68 Heading F2D. In a motor-vehicle countershaft transmission, tne usual pilot bearing between the transmission input shaft 12 and the engine crank-shaft (not shown) is eliminated, the shaft 12 being cantilevered on three axially spaced bearings, two, 44, 46, between the hollow rear end of the input shaft 12 and the main output shaft 38, and a third, 20, retained in the transmission casing 18 by the usual sealed end-cover 22. Since the only direct contact with the engine crank-shaft is now through the non-metallic facings of the usual splined clutch disc 10, the transmission shafts are insulated from metallic contact with the crank-shaft.