baber/WOPTO huggingface dataset:
Patent GB-621472-A (GB)
Title: Improvements in and relating to angle gauges
IPC: G01B3/56
Filed: 1945-03-17
Abstract: 621,472. Angle gauges. VICKERSON, G. E., and VICKERSON, B. March 17, 1945, No. 6782. [ Class 97 (iii)] An instrument for testing angles comprises a straight edge d fixed to a base member b at the required angle to be tested (a right angle in the form shown), the base member being capable of being tilted about a horizontal axis at right angles to the straight edge by means of a micrometer screw l on the base member associated with a scale p indicating the angle of tilt. The base member b may be tiltably mounted on a base-plate a by means of two spaced balls j, located in conical recesses in the bottom side of the member b and in one conical recess and one " V " groove in the upper side of the base plate a. Alternatively, the balls may be located in the conically-recessed ends of set screws in the member b. The micrometer screw carries an arm n and pointer o co-operating with the scale p. The two plates a and b, which may each be of triangular shape, are adjustably attached by a screw f acting through a spring g.
Patent GB-1386867-A (GB)
Title: Sensing the depth of surface cavities formed in a layer of material
IPC: G01B17/00
Filed: 1972-02-14
Abstract: 1386867 Ultrasonic gauging of dimensions EUROPEAN ROTOGRAVURE ASSOCIATION 14 Feb 1972 [19 March 1971] 6784/72 Heading H4D The depths of surface cavities Z1, Z2, Z3 in metal layer 1 are determined by measuring the intensity of the portion of an incident ultrasonic beam S<SP>1</SP> reflected back by the cavities. In an etching process layer 1 is covered with resist 2 such that etchant 3 produces cavities Z1, Z2, Z3 of different depths. Initially, the surface of layer 1 is smooth (Fig. 1) and beam S<SP>1</SP> is refracted and reflected to produce a beam S<SP>11</SP>, i.e. no part of beam S<SP>1</SP> is reflected back along its path. In Fig. 2 the etchant has produced the cavities and a portion of S<SP>1</SP> is reflected back along its path by, e.g. wall W of cavity Z2. It can be shown that the intensity of the reflected beam is proportional to the area of wall W and hence the depth of Z2. The measured intensity may be used to control the etching process to provide the required depths. In the apparatus of Fig. 4 (not shown) metal layer (1) is placed on a rotating drum dipping into etchant (3). Layer (1) is scanned by ultrasonic device (16) and hence the depth of cavities Z1 ... Zn in the layer are monitored. The walls W of the cavities, or portions thereof, extend to the surface of layer 1 at the same angle so that if there are several separate cavities then the reflected waves reinforce to give a strong signal. Cavities having other cross-sections may be formed.
Patent GB-258136-A (GB)
Title: Improvements in feed mechanism for cotton carding machines
IPC: D01G23/04
Filed: 1925-03-12
Abstract: 258,136. Bohle, F. March 12, 1925. Feeding carding-engines.-In an arrangement of the kind described in Specifications 232,542 and 257,810, for feeding cotton from a scale f to a carding-engine, each weighing as it falls on to the feed band b, is caused to fall with half its length over the preceding weighing d and with the other half lying directly on the feed band. The speed of the feed bands b, m is regulated and the distance c between the feed band m and the presser board a is adjusted to secure this. The presser board a is pivoted and swings down to cover the whole of the weighing on the feed band.
Patent GB-1526344-A (GB)
Title: Multi-way speaker system
IPC: H04R3/14
Filed: 1976-02-20
Abstract: 1526344 Loudspeaker systems MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 20 Feb 1976 [3 March 1975] 06794/76 Heading H4J In a loudspeaker system in which a woofer 7 and tweeter 3 are fed by respective low and high pass filters, the tweeter 3 is stepped back from the woofer 7 by a distance d such that sound at a frequency f0 emitted by the woofer is 180 degrees out of phase with sound at the same frequency emitted by the tweeter at a listening area, the frequency f0 being the frequency at which the sound pressure-frequency characterisitics for the woofer and tweeter cross each other (cf. Figure 8, not shown). A squawker 5 fed by a band pass filter 4 is arranged to have its amplitude peak at said frequency f0, at which frequency sound produced thereby is arranged to be about 90 degrees out of phase with the net frequency signal produced at said listening area by the tweeter and woofer. Such an arrangement enables substantially flat sound pressure-frequency and phase-frequency characteristics to be produced for the system over the working range (cf. Figure 10, not shown). Instead of the slope of the low and high pass filters being as shown in Figure 1, a 6 dB/octave or 12 dB/octave slope may be provided (Figures 11 and 12, not shown). The single squawking may be replaced by a plurality of such devices, each being fed by a respective filter. The combined soundpressure frequency and phase-frequency characteristics are then arranged to bear the above relationships at the frequency f0. The woofer is a 35 cm, case-type loudspeaker, the squawkers 12 cm case-type loudspeakers and the tweeter a 3À2 cm dome type loudspeaker. The filters are illustrated in Figures 2-4 (not shown).
Patent GB-228380-A (GB)
Title: Improvements in the treatment of glauconite for water-softening purposes
IPC: C01B33/46
Filed: 1924-03-17
Abstract: Glauconite is treated with a solution containing dissolved alkali silicate and with a dilute acid-reacting solution, preferably one containing aluminium sulphate.  The glauconite is first washed alternately with water and sodium chloride solution until fine and disintegrable matter is removed.  The sodium chloride solution may be made slightly alkaline with caustic soda. The sodium silicate may be dilute and hot, and acid solutions ordinarily between 1 DEG  and 10 DEG  Baum<\>ae in strength are used. Dilute mineral or organic acids are used, or other or acid-reacting solutions, such as aluminium sulphate, ferric chloride, and nitre cake.  The treatment with the silicate and acid solution may be simultaneous, but preferably the silicate is used first.  If the acid is used first, a final washing with dilute acid is usual.  The glauconite may be dried about 200 DEG C. in a concentrated solution of sodium silicate and washed with aluminium sulphate solution, washing with a solution of a neutral salt such as calcium chloride being preferably interposed.  The glauconite may be finally exposed to a solution of sodium chloride.
Patent GB-565774-A (GB)
Title: Improvements in production of fatty acids, aldehydes, ketones and alcohols from waste cellulose products
IPC: C12N1/22
Filed: 1942-05-20
Abstract: Waste cellulosic materials are heated with an alkali such as milk of lime for a few hours in an autoclave or for a few days in an open vessel at about 100 DEG  C.  The undissolved material is heated with dilute acid to produce a sugar solution which, admixed with the alkaline liquor from the first treatment, is fermented to produce organic acids, chiefly butyric acid, by known methods or as described in Specification 565,772.  The undissolved residue from the saccharification which contains lignin is heated alone yielding coke, tar and other products, or is distilled dry with soda or potash yielding humic, succinic, benzoic and other acids, or may be heated with caustic soda solution, evaporated to dryness and heated with soda lime yielding methyl alcohol, ketones and acetone oil, or may be heated with caustic soda solution in an autoclave at 250-300 DEG  C. yielding methyl alcohol, tar and sodium acetate.ALSO:Waste cellulosic materials are heated with an alkali such as milk of lime for a few hours in an autoclave or for a few days in an open vessel at about 100 DEG  C.  The undissolved material is heated with dilute acid to produce a sugar solution which, admixed with the alkaline liquor from the first treatment is fermented to produce organic acids, chiefly butyric acid by known methods or as described in Specification 565,772, [Group IV].  The undissolved residue from the saccharification which contains lignin is heated alone, yielding humic, succinic benzoic and other acids, or may be heated with caustic soda solution, evaporated to dryness and heated with soda lime yielding methyl alcohol, ketones and acetone oil, or may be heated with caustic soda solution in an autoclave at 250-300 DEG  C. yielding methyl alcohol, tar and sodium acetate.
Patent GB-1083988-A (GB)
Title: A rectifier arrangement
IPC: H02P7/293
Filed: 1965-02-17
Abstract: 1, 083, 988. Automatic current control. LICENTIA PATENT-VERWALTUNGS G.m.b.H. Feb. 17, 1965 [Feb. 17, 1964], No.6851/65. Heading G3R. [Also in Division H2] A rectifying arrangement comprises two series-connected single phase bridges 4, 5, each consisting of two controlled semi-conductor rectifiers 4À1, 4À2, and two diodes 4À3, 4À4, the common junction of the controlled rectifiers being connected to an A. C. terminal. As shown the arrangement feeds a motor 6 in a selfpropelled vehicle. To effect control a measure of the actual current is detected by a current transferred 8 and fed to comparators 14, 15, to which a measure of the desired current I is also fed. Error signals from the comparators are fed via regulators 11, 12 to pulse generators 9, 10 controlling the bridges 4, 5, respectively. The value of the actual current fed to the two comparators are slightly different, that to comparator 12 being say 2% greater. In this way since the desired current I is common, the bridge 4 is controlled throughout its full range before the bridge 5 is controlled.
Patent GB-1224150-A (GB)
Title: Improvements in and relating to girdles and like garments
Inventor: KIRSON PAULA
IPC: A41C1/08
Filed: 1970-02-12
Abstract: 1,224,150. Girdle. P. KIRSON. 12 Feb., 1970, No. 6887/70. Addition to 1,176,511. Heading A3V. A girdle 1 or like garment as disclosed in Specification 1,176,511 in which the fastening means 3 comprises interengageable pile fabrics, one fabric carrying filamentary hooks and the other loops. The fabrics are preferably nylon. The tension in the girdle is thus capable of very fine adjustment.
Patent GB-733014-A (GB)
Title: Improvements in or relating to electromagnetic wave mixing devices
IPC: H03D9/06
Filed: 1953-03-12
Abstract: 733,014. Wave-guides. NATIONAL RESEARCH COUNCIL. March 12, 1953 [March 14, 1952], No. 6899/53. Class 40 (8). [Also in Group XL (c) ) ] In a dual mixer assembly comprising a local oscillator 23 feeding energy both ways along a wave-guide or other channel 15 to rectifier mixers 34, 11 respectively receiving a portion of the transmitted energy from antenna channel 1 along channel 33 for A.F.C. of the local oscillator and most of the received wave from the same (or other) channel 1 (along channel 10) for frequency changing it to the receiver intermediate frequency, susceptance means' 16 is arranged between the local oscillator input to the channel 15 and the mixer 11 producing the receiver I.F. so that most (but not all) of the incident local oscillator energy is reflected back in the opposite direction, and attenuator means 29 between the local oscillator input and the A.F.C. mixer 34 for preventing energy travelling backwards from reaching the other mixer 11. The mixers 11, 34 connect with coaxial line output connectors 13, 36 respectively. A further susceptance control device 32 may be arranged between the attenuator 29 and mixer 34 to reflect energy back to the mixer 34, and between the mixer 34 and the input to the A.F.C. channel 33 there are arranged an apertured cutoff attenuator and a longitudinally arranged resistive attenuator strip. The attenuator 29 may likewise be a longitudinal resistive strip. The susceptance devices 16, 32 may be posts adjustably screw threaded into the wave-guide to form inductive or capacitive partial short circuits and may be gripped by spring fingers on the supports. The posts are preferably arranged at corners of the waveguides whera susceptance due to the join may be produced and the post 16 is so spaced from the local oscillator input that energy reflected to the said input is in phase with the latter. Received energy reflected from the main oscillator, e.g. a magnetron (or from an anti-TR switch) is arranged to be in phase with that directly passing into the I.F. mixer channel 10, and the latter may include a TR switch 6. The channel sections 10, 15, 33 may be integrally connected and the free end of channel 33 connected to the main (antenna) channel 1, with a lead or other gasket 44 between, by clamping bars 45, 46 and a screw adjusted yoke 47. Choke and flat couplings 2, 3 terminate the mixer antenna channel 1.
Patent GB-1060085-A (GB)
Title: Method of adhering dentures and compositions therefor
IPC: A61K6/00
Filed: 1964-02-19
Abstract: Products suitable for application to denture surfaces to render the dentures adhesive to gums comprise a physiologically acceptable powder or paste containing an acrylamide polymer.  The powders generally contain at least 10% by weight of polymer and up to 90% of a natural gum and up to 5% of an anti-caking agent.  The pastes usually contain from 10 to 45% by weight polymer, 0 to 35% of a natural gum and 55 to 90% of an hydrophobic excipient oil base. Suitable acrylamide polymers include low molecular weight anionic copolymers of acrylamide and acrylic acid, and nonionic acrylamide homopolymers of molecular weight from 5 to 6 million. Natural gums specified are karaya, tragacanth, acacia, arabic and locust bean.  As anti-caking agent there may be used air-floated silica, magnesium stearate or talcum powder.  The excipient oil base may be petrolatum or an animal, vegetable or mineral oil or wax.  Instead of the natural gum, one or more of gelatine, starch, pectin, carboxymethyl cellulose, hydroxymethyl cellulose and methyl cellulose can be employed.  Colouring and flavouring agents (unspecified) may additionally be present.
Patent GB-657859-A (GB)
Title: Improved flying toy
IPC: A63H27/14
Filed: 1949-05-24
Abstract: 657,859. Flying toys. MACKAY, G. May 24, 1949, No. 7047. [Class 132 (iii)] A flying toy comprises a tin disc formed into a propeller having radial blades and a circumferential rim. A spool 3 rotatably mounted on a handle 1 is spun by a wound string 4 and the propeller, freely mounted on a triangularsectioned spool extension 5, flies off due to the lifting action of the spinning blades.
Patent GB-106325-A (GB)
Title: Improvements in or relating to Yarn-controlling Devices for Textile Machines.
Inventor: WADE HAROLD
IPC: B65H59/16
Filed: 1916-05-17
Abstract: 106,325. Wade, H., (Leeson, J. R.). May 17, 1916. Clearing-apparatus; tension arrangements. - Apparatus for clearing and controlling the delivery of yarns &c. from cops or bobbins in the creels of textile apparatus comprises a frame F adapted to be clamped by a screw s to an horizontal rail R of the creel and supporting-rollers B, C, the yarn &c. y passing from the cop through a guide G, a hole f<3> in the front f<2> of the frame, over the roller B, under the roller C, and over the rail R. The roller B has axle pins adapted to rotate in slotted bearing-blocks b<1> of a lubricating-composition containing graphite, and the roller C, which may be of any desired weight, has its ends fitting loosely in slots f<5> in the sides of the frame and rests on the roller B and the rail R, friction with the rail retarding its rotation. Each apparatus may control, say, two yarns.
Patent GB-548094-A (GB)
Title: Improvements in and relating to polyvinyl halide compositions
IPC: C08K5/132
Filed: 1941-06-04
Abstract: 548,094. Polyvinyl halide compositions. BRITISH THOMSON-HOUSTON CO., Ltd. June 4, 1941, No. 7056. Convention date, June 8, 1940. [Class 2 (iii)] Polyvinyl halide compositions are plasticized with a methyl chlor-stearate containing at least 3 chlorine atoms in the molecule. Methyl hexachlor stearate and methyl pentachlor stearate are specified ; also compositions comprising 40 per cent. plasticizer and 60 per cent. polyvinyl chloride. Tricresyl phosphate and other plasticizers and the usual fillers may also be added and acetylated castor oil can be mixed with the composition. The composition may include a lead base or salt as an electrical stabilizer. Specifications 470,380 and 499,931 are referred to.
Patent GB-698390-A (GB)
Title: Improvements in rocket motors
IPC: F02K9/36
Filed: 1952-03-19
Abstract: 698,390. Rocket motors. AKTIEBOLAGET BOFORS. March 19,1952 [March 21, 1951], No. 7103/52. Class 9(ii) Motor, for a rotatable rocket, comprises a holder for bar-shaped propellent charges within a casing, wherein the holder includes a device for each charge acting as driver for the charge and in combination with the casing forming a locating pocket for the charge. On the inner wall of the casing 1 are twin guide rails 2, 3 along which channelled members 4, 5 can slide. These members 4, 5 are secured to radial arms of a disc-shaped holder 6 having a central aperture and bearing against one end of the charges. The ends of the remaining arms are bent up to contact the inner wall of the casing and thus form additional guide means for the holder. Extending from the central aperture in the holder is a tube 7 around which the tubular charges 8-12 are spaced, the charges being separated by rectangular plates 13-17 secured to the holder 6. At the other end of the charges is a second holder 37 from which extend plates 19-23 with edges aligned with those of plates 13-17, this second holder being fixed to the casing. If the motor is inserted in a socket having a plurality of nozzles set at such an inclination to the axis of the rocket that the motor rotates counter-clockwise, the plates 13-17, 19-23 cause the charges to rotate with the casing and maintain the charges parallel to the axis of the rocket, the holder 6 having moved towards the holder 37 by acceleration forces. The holder 37 is also designed to act as a grating. It has a central aperture from which extends a tube 18, the plates 19-23 being bent-up parts of a disc from which the holder is formed, two additional bentup parts 24-25 being provided for each charge.
Patent GB-766859-A (GB)
Title: Improvements in or relating to an hydraulic servo-mechanism for the control of disc brakes of vehicles
IPC: B60T13/14
Filed: 1955-03-10
Abstract: 766,859. Hydraulic brakes. SOC ANON A. CITROEN. March 10, 1955 [June 22, 1954], No. 7120/55. Class 103 (1). An hydraulic servo-mechanism for the control of vehicle disc brakes comprises a closed hydraulic circuit including brake-operating cylinder or cylinders 5 located between a reservoir tank 7 and a manually-operable distributer 6 maintained at a high pressure in the order of 100 kg. per square centimetre and controlling the application of pressure to the cylinder or cylinders 5, a main pressure accumulator 1 maintained by a high pressure pump 2 is located between the reservoir and the distributer and a secondary accumulator 4 tapped off the main accumulator 1 through the medium of a cut-out or unloader valve 3 to maintain the pressure in the distributer. It is stated that the high pressure of the order 100 kg. per centimetre or higher avoids the possibility of " vapour lock ".
Patent GB-871729-A (GB)
Title: Improvements in and relating to rectifying circuits, particularly for metering arrangements
Inventor: KING PETER HAZLETON
IPC: G01R19/22
Filed: 1959-03-02
Abstract: 871,729. Rectifying. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 16, 1960 [March 2, 1959], No. 7203/59. Class 38 (2). [Also in Group XXXVI] A rectifying circuit comprises in series relationship a diode having an intrinsic forward voltage at zero current (e.g. a thermionic diode), and a second diode (e.g. a silicon diode) requiring the application of a forward voltage of substantially the same value as the intrinsic voltage to bring this diode to the low resistance portion of its operating characteristic. The thermionic diode has a characteristic as shown by 1 so that a reverse voltage NV is required to give zero current and the diode may be considered as having an intrinsic forward voltage of value NV at zero current. The silicon diode has a characteristic 2 and requires a forward voltage FV to bring it to its low resistance portion. If NV is substantially equal to FV the arrangement will have a substantially linear voltage/current relationship at low currents. The heating of the cathode of the thermionic diode is variable to obtain the desired effect. A bridge circuit of diodes TD1, TD2, SD1, SD2 may be arranged as in Fig. 1, and may be used for measurement of the true average values of an alternating current or voltage independent of temperature changes.
Patent GB-589420-A (GB)
Title: Improved means for transmitting power from a spindle to parts mounted thereon
IPC: F16D1/06
Filed: 1945-03-22
Abstract: 589,420. Transmission of rotary power from shaft to elements mounted thereon. HUGHES and SON., Ltd., H., HOBBS, W. R., and HUGHES, A. J. March 22, 1945, No. 7281. [Class 80 (ii)] Means for transmitting power from a spindle b to parts d mounted thereon comprises one or more L-shaped elements c of wire, the shorter limb e of each engaging in a hole a in the shaft b, and the longer limb c passing through holes f in the parts d, as that the wires c are parallel to the shaft b. A washer k, of mouldable material, having holes f abuts against the limbs e. A collar l with holes f engaging the ends of the wires c is keyed hard up to the parts d by a taper pin m. In a modification a flange on the spindle b abuts against the limbs e to take up the strain, and the collar l is forced against the parts d by a screwed nut. The parts d may be cams, switch-arms, collars, or the like.
Patent GB-1201743-A (GB)
Title: Improvements in or relating to the deposition of a layer of solid material on a substrate by cathode sputtering
IPC: C23C14/34
Filed: 1969-02-11
Abstract: 1,201,743. Sputtering apparatus SIEMENS A.G. Feb.11, 1969 [Feb. 12, 1968], No.7302/69. Heading C7F. Material is sputtered on to a substrate 1 of e.g. Si, Ge glass or ceramic from a negatively biased cathode 3 in the form of a perforate grid, which is located between the substrate and the anode 5. The distance between the substrate and the cathode is arranged to be less than 10 mean free path lengths of the material to be sputtered at the reduced pressure, and this distance is such that no independent discharge takes place between them. The substrate may be cleaned by pivoting the cathode out of the line between the substrate and anode and applying a high voltage. The cleaning and the sputtering may be carried out with continuous evacuation of the vessel, and introduction of argon or reactive gases e.g. oxygen or nitrogen. The material to be sputtered may be Ta, Ni, Ti, Si, Al, W, Mo, Cr, semi-conductors, non-metals or oxides, nitrides, carbides, and silicides. When the material to be sputtered is not conductive, two electrodes may be used with H. F. voltage. The substrate or the cathode may be moved during deposition. When the substrate is in the form of several small objects, the cathode and substrate carrier may be curved, Fig. (not shown). The vacuum chamber may be made of metal and the earthed wall used as the anode. With the cathode privoted out of the way, additional layers may be vapour deposited on the substrate.
Patent GB-140100-A (GB)
Title: Safety device for electric generators
IPC: H02H7/06
Filed: 1920-03-11
Abstract: 140,100. Siemens - Schuckertwerke. Oct. 23, 1918, [Convention date]. Auxiliary protective or safety devices.-Generators are protected against the effects of short circuits on the outgoing main by placing overload cut-outs in the exciter circuits. In the example shown in the drawing, a three-phase generator b driven by a turbine a is provided with an overload cut-out e in the exciter circuit c, d. The exciter circuit may have additional coils h, i for opening the main switch g, and controlling the turbine valve respectively.