baber/WOPTO huggingface dataset:
Patent GB-798487-A (GB)
Title: Improvements relating to composite resilient materials
Inventor: CLARKE SYDNEY
IPC: B32B27/00
Filed: 1955-11-22
Abstract: A composite resilient material comprises a body of resilient polyurethane foam having a surface layer of leather permanently attached to it.  The material may be made by sticking the leather to a preformed body of polyurethane foam by means of an adhesive, or by preparing the polyurethane foam in contact with the leather. In the latter case the leather is placed upon a supporting surface such as a mould or tray, a mixture of liquid polyester (or polyesteramide), organic di- or polyisocyanate, and an activating mixture is applied to the leather and allowed to foam, set and mature.  The composite material may be shaped to a surface configuration resembling fluting, pleating or quilting.  It may have cavities in the body of polyurethane foam opening onto the face remote from the leather. Such cavities may be formed by punching.  The shaping may be carried out by preparing the polyurethane in a suitably shaped mould or by applying a heated die and pressure.  When a thermosetting adhesive is used to join the two laminae, the setting of this adhesive may be combined in a single operation with this moulding.
Patent GB-486541-A (GB)
Title: Improvements in and relating to air heating installations
IPC: F26B21/00
Filed: 1936-12-04
Abstract: 486,541. Heating air. EVANS, S. D. O., and ENDEMANN, H. M. Dec. 4, 1936, No. 33361. [Class 64 (i)] Air for drying clay wares is heated by passing it through tubes 14 heated by the gases from a furnace 28 fed mechanically with coal and air under the control of the temperature of the heated air. A motor driving the fuel conveyer and the fan supplying air for combustion is controlled by a thermostat 38 in the air outlet duct 16. The furnace gases are directed in a sinuous course over the tubes by baffles 24, and the air enters the tubes through a passage 46 over the combustion chamber, and after leaving the tubes, passes around the chamber to an exhaust fan 42.
Patent GB-1260471-A (GB)
Title: Improvements in or relating to power amplifiers
Inventor: WADDINGTON DAMER EVEYLN O'NEILL
IPC: H03F3/30
Filed: 1968-07-12
Abstract: 1,260,471. Transistor amplifier circuits. MARCONI INSTRUMENTS Ltd. 5 May, 1969 [12 July, 1968], No. 33376/68. Heading H3T. A power amplifier comprises two driving transistors DT1, DT2, the first of which is connected as an emitter-follower and has its emitter in common connection with the emitter of the second; means for applying signals to be amplified to the bases of both driving transistors; two output transistors OT1, OT2 the first of which has its emitter connected to the collector of the second and its base connected to be driven from the emitter of the first driving transistor DT1 and the second of which has its base connected to be driven from the collector of the second driving transistor DT2; a unilaterally conductive device D connected to provide a current path for the emitter current of the second driving transistor DT2 to the connection between the emitter of the first output transistor OT1 and the collector of the second, OT2, whereas the emitter current of the first driving transistor DT1 flows through the base of the first output transistor OT1, and means for connecting an output load L to the connection between the emitter of the first output transistor OT1 and the collector of the second OT2.
Patent GB-800103-A (GB)
Title: Acoustic absorber
IPC: E04B9/00
Filed: 1955-11-22
Abstract: 800,103. Acoustic absorbers. BOLT BERANEK & NEWMAN, Inc. Nov. 22, 1955 [Sept: 19, 1955], No. 33460/55. Class 40 (8). [Also in Group XXXVIII] Ceiling lights 1 in a studio are covered by a sound-absorbing sheet 15 of transparent or translucent material such as polyvinyl chloride polyvinyl acetate and polystyrene. The material is made sound absorbent by providing perforations 17 falling within the limits set by the formula 4 log 10  r=k-log 10  n/d, where k lies between 2.39 and 4.39, d is the thickness of the sheet in mils., r is the radius of the perforations in mils. and lies between 2 and 40 mils. and n is the number of perforations per square inch. If the perforations are of different shapes and sizes r is defined by the condition that the total area of the perforations is equal to the area of a like number of circles whose diameter is 2r. The absorbent material is supported by struts 7 and beams 9.
Patent GB-908064-A (GB)
Title: An improved method of processing metal bars
IPC: B23D79/00
Filed: 1958-10-20
Abstract: 908,064. Broaching. SALLE STEEL CO. Oct. 20, 1958 [Oct. 22, 1957], No. 33677/60. Divided out of 908,061. Class 83 (3). A method of removing a surface portion of a metal bar comprises moving the bar through a shaving tool while providing additional relative movement between the tool and work. The additional movement may consist of rotation of the tool or of oscillation or vibration of the tool. The work may be advanced at slow speeds of 5 to 35 feet per minute and may be surface-hardened before entering the cutting die. Specifications 908,062, 908,063 and 908,065 also are referred to.
Patent GB-447765-A (GB)
Title: Manufacture of combined sound and picture films
IPC: G03C5/14
Filed: 1934-11-23
Abstract: 447,765. Combined sound and picture films. I. G. FARBENINDUSTRIE AKT.- GES., Frankfort-on-Main, Germany. Nov. 23, 1934, No. 33729. Convention date, Nov. 23, 1933. Drawings to Specification. [Class 98 (ii)] Relates to the manufacture of combined sound and picture films, particularly lenticular films, by a process in which the picture record is developed by the reversal method and the sound record by the usual single development. According to the invention, the part of the light-sensitive layer intended for the soundtrack is covered with a layer of varnish, which is removed before the sound-record is developed, or which is rendered pervious to the developer. The varnish, which may be a solution of benzyl-cellulose in carbon tetrachloride, can be applied before or after exposure of the film. By suitably colouring the varnish, it may be made opaque to the light to which the picture portion of the film is exposed, but transparent to the light used for recording the sound. The back surface of that strip of the film which carries the sound track is also preferably covered with a varnish of the same colour. It may be necessary to dry the film after the first development, in order to remove the varnish before the second development, but to avoid this step the following procedure may be adopted. The sound track is printed before development of the pictures is begun. After the first development and bleaching of the pictures, the film is treated in a bath, (e.g. potassium hydroxide), which saponifies the layer of varnish protecting the sound-track, and thus renders it pervious to liquid, The second development, which affects the pictures and sound-track simultaneously, is then carried out.
Patent GB-1480288-A (GB)
Title: Electronic switching network
IPC: H04Q3/52
Filed: 1974-08-02
Abstract: 1480288 Electronic switching assemblies SIEMENS AG 2 Aug 1974 [9 Aug 1973] 34119/74 Heading H1R A two stage switching network utilizing semi-conductor devices as cross-points is constructed as a single monolithic block. The interstage links are arranged in layers one above the other with an insulating layer therebetween and may be continuations of the metallic deposits which act as electrodes and multiples for the rows or columns of the individual matrices in each stage. In order to reduce cross talk, the links extending from any particular first stage matrix are shielded from those extending from an adjacent matrix by a metallic screening layer which may be connected to a D.C. bias voltage or to ground.
Patent GB-487237-A (GB)
Title: Improvements in or relating to recording apparatus for use with meters or other apparatus
IPC: G01D4/00
Filed: 1936-12-16
Abstract: 487,237. Recording - apparatus. BRITISH POWER & LIGHT CORPORATION, Ltd.. and BOLLAM, C. Dec. 16, 1936, No. 34565. [Class 106 (iv)] A record strip advanced under the control of electromagnetic means has the time marked on it at predetermined time intervals by a continuously-rotating type-carrying drum. The strip is moved. a certain distance each time a certain quantity of electrical energy or of fluid passes through a meter, or each time a predetermined number of operations of a machine occurs. As described, the record strip 3 is advanced at each revolution of the meter rotor (not shown), an impulse being sent to a magnet 17 to rock a lever 16 carrying a bar 15 having a tooth 15a driving a ratchet wheel 14 connected through a flexible coupling to a toothed drum 4 driving the record strip. A type drum 23 is driven one revolution per hour by a synchronous motor 27 and is connected to a coaxial type drum driven once every twenty-four hours. The drum 23 carries pins 28 which, every fifteen minutes. cause the closing of contacts 29 to energize a magnet to lift a platen 38 to press the record strip 3 and an ink ribbon 20 against the type drums to print the time on the strip. The strip-driving drum 4 is held during this printing by a brake 36 connected. to the platen 38, the driving motion from the ratchet wheel 14 being stored in the flexible coupling. In a modification, the record strip is fed by a spring motor controlled by an escapement device electromagnetically controlled by the electricity meter.
Patent GB-195158-A (GB)
Title: Improvements in or connected with apparatus for testing the elongation of wire and rod
IPC: G01N3/08
Filed: 1921-12-23
Abstract: 195,158. Woodfield, F., and British Insulated & Helsby Cables, Ltd. Dec. 23,1921. Linear-dimension gauges.-The apparatus, which is intended for use with wires of small gauge, comprises two slides 1, 10 movable relatively to each other, and each carrying a part adapted to engage the specimen frictionally. The part 1 has side extensions 3 which rest upon guides 4, while the part 10 is guided in'strips 11 bolted to the first part. The frictional engagement is secured by jaws 7 pressed towards each other by springs as shown. The relative movement is read off at the index 11<x> against the scale 12, which may indicate elongation, or percentage elongation.
Patent GB-386420-A (GB)
Title: Method for the decoration of articles formed of thermo-plastic materials
IPC: B44C1/24
Filed: 1931-12-14
Abstract: Decorated blocks of thermoplastic materials are made by compressing the body material in a mould with a die formed with the pattern in relief, then filling up the hollows thus formed with decorative material and finally compressing to complete the article.  The die preferably is heated during the pressing operation.  The block may receive a final upper layer of transparent material to form a finished surface.  In some cases top and bottom dies may be used to form indentations for patterns on both sides of the article simultaneously.  In some cases the indented blocks may be stored and receive the decorative materials at a later time.  A thicker complete article may be made up by uniting several of the blocks by pressure. The finished articles may be hardened by immersion in or exposure to formalin, acid vapours or heated air, and may be chipped or worked to special shapes.  In a modified process a die having the pattern indented thereon is employed, the indentations being filled with colour which is transferred to a sheet of paper or the like and allowed to set thereon.  The paper is inverted over the soft body material in the mould and the whole pressed together.  Reference is made to the treatment of horn and to moulding buttons by this process.  Reference has been directed by the Comptroller to Specifications 25155/98, [Class 22, Cements &c.], 111,353, 306,945, [both in Class 93, Ornamenting], and 354,834.
Patent GB-1119575-A (GB)
Title: Improvements in the treatment of cellulosic fabrics
IPC: D06M13/12
Filed: 1966-08-02
Abstract: A crosslinked woven cellulosic fabric having improved tensile strength is produced by subjecting the yarns of the warp or weft yarn system of the fabric (the tensile strength of which is to be improved) while in the moist condition to a tension to effect stretching the yarns during stretching being in a substantially straight line form and drying the fabric while under this tension, prior to cross-linking the cellulosic materials of the yarns by reaction with a chemical cross-linking agent.  The stretching may be effected after impregnating the fabric with the cross linking agent, the fabric then being dried under tension and heated in a stenter frame to effect curing or the stretching may be combined with the drying usually effected after bleaching.  Stretching in the weft may be effected by means of a pin stenter, the fabric being fed at an acute angle of for example 20-30 DEG  to the plane of frame so that the fabric is shrunk in the direction of the warp and stretching effected in the weft.  Clip stenters may be used which comprise means for introducing the fabric with overfeed on to the front part of the stenter, e.g. two rollers with intermeshing grooves between which the fabric is guided and neatly folded thereby.  If stretching of the warp filaments is to be effected longitudinal tension may be obtained by means of a pair of tension rollers provided between the padding machine in which the fabric is impregnated with the cross-linking agent and the stenter frame which rotate about 6-8% faster than the impregnation padding machine.  The cross linking agent may be an acetal produced from formaldehyde and diethylene glycol, dimethylolmethyl carbamate, dimethylol ethylene urea, dihydroxyethylene urea or propylene urea, 1, 3-dimethylol-5-hydroxyethyl perhydrotriazone-2, dimethylolurea, tetramethylol melamine, an etherified methylol melamine, the diglycidol ether of ethylene glycol, formaldehyde, glyoxal or glutaraldehyde, which may be applied with or without acid or alkaline catalysts, e.g. zinc nitrate or zinc chloride.  Fabrics comprising cotton, regenerated cellulose or cellulose derivative fibres alone or in admixture with other natural or synthetic fibres may be treated. The treated fabric may be used in the manufacture of shirts.
Patent GB-1236978-A (GB)
Title: Adjustable stop and gauge for a saw-bench
Inventor: MURPHY NEVILLE GOODE
IPC: B27B27/00
Filed: 1968-07-20
Abstract: 1,236,978. Sawing. N. G. MURPHY. 20 July, 1968, No. 34718/68. Heading B5L. [Also in Division G1] An adjustable stop for a cross-cut saw-bench includes a base 10 and a fence 21, a scale 12 on the base indicating main units of length and an apertured plate 13 on the base with holes whose  spacing corresponds to the main unit graduations, a scale on the fence and having graduations corresponding to a selected number of sub-units of the main unit, these graduations being spaced at a distance equal to one main unit less one sub-unit, and a peg 27 for detachably securing the fence to the base. The scale 12 may be marked in inches and feet while the scale on the fence has divisions marked in 1/32 inch and spaced by 31/32 inch. Alternatively, the scale on the fence may be marked in divisions of 1/16 inch and spaced by 15/16 inch. The fence may be guided in sliding relation to the base by a bracket and roller (Figs. 4, 5, not shown) and may have an adjustable projection (Fig. 6, not shown). The scale 12 may be adjusted relative to the base.
Patent GB-921227-A (GB)
Title: The high temperature furnace for x-ray diffractometer
Inventor: SHIMULA YOSHIHIRO
IPC: G01N23/20
Filed: 1959-10-16
Abstract: 921,227. Heating X-ray specimens by electric resistances. RIGAKU DENKI CO. Ltd. Oct. 16, 1959, No. 35191/59. Class 39 (3). [Also in Group XX] An arrangement for heating the specimen in an X-ray diffractometer comprises a base member 11, Fig. 4, as shown, a rectangular block with semicircular end portions 1b, 1c, for supporting the specimen holder 13, and electric heating wires 17, 18 disposed respectively behind and in front of the specimen. The base member is mounted on a rotatable shaft 12 and may be enclosed in a cylindrical shield case 2 which is provided with a metal, e.g. nickel, foil window 3 for the entry and exit of the X-ray beams. The rear heating wires 17 are mounted in grooves 16 and the forward heating wires 18 are disposed in grooves in the semicircular portions 1b, 1c and both sets of wires may consist of platinumrhodium. In another embodiment, Figs. 7 and 8, the base member 21 is C-shaped with heating wires 27 arranged in grooves 26 behind the specimen S and heating wires 28 wound around the outside of the base part. In a further embodiment, Fig. 13, the base member 31 consists of a semicircular cylindrical portion 31a with upper and lower circular portions 31c, and a double set of parallel heating wires 35, 36 for heating the front of the specimen are wound around the semicircular part and a support 32.
Patent GB-1481426-A (GB)
Title: Printing device
IPC: B41J1/40
Filed: 1974-08-09
Abstract: 1481426 Selective printing PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 9 Aug 1974 [14 Aug 1973] 35191/74 Heading B6F A selective printer comprises a type wheel 1 rotatable about a first axis 9 which is itself rotatable about a second axis 7 to permit cycloidal paths of movement of the type characters 2 on the type wheel, the type wheel being driven by a first drive input from a motor 15 to a sun-gear 4 meshing with gearing 3 on the type wheel, and the axis 9 being mounted on an arm 8 driven about axis 7 by a motor 10. The motor 10 thus effects impression movement of the type wheel, while a motor 15 rotates the type wheel for character selection.
Patent GB-908034-A (GB)
Title: Hand sprayer
IPC: B05B11/00
Filed: 1959-10-20
Abstract: 908,034. Hand sprayers; syringes. HUDSON MANUFACTURING CO., H. D. Oct. 20, 1959 [Jan. 19, 1959], No. 35537/59. Classes 102(1) and 102(2). A double acting sprayer has a container 8 for spray solution and a spring loaded accumulator 60 in the outlet 66 which has a nozzle 122 incorporating a valve 92, Fig. 4, surrounded by a filter 102 and which may be held on its slot 90 by screwing the nozzle end 82 on to the end 84 of the outlet 66 whereby the accumulator 60 may be charged.
Patent GB-1120473-A (GB)
Title: Pulse generators
IPC: H03K3/313
Filed: 1965-08-19
Abstract: 1,120,473. Semi-conductor circuits. TELEFONAKTIEBOLAGET L.M. ERICSSON. 19 Aug., 1965 [19 Aug., 1964], No. 35713/65. Heading H3T. A multivibrator comprises a load impedance RL in series with two parallel branches connected across a voltage source, each branch including a reactive circuit (R1, Cl and R2, C2) and a semi-conductor device (T1 and T2), the semi-conductor device having the property to change from high to low impedance when the voltage across it exceeds a predetermined voltage, independent of voltage polarity, and to revert to high impedance when the current is reduced to zero; the circuit being such that the transition of one device from high to low impedance causes a transition in the other device from low to high impedance and vice versa. The circuit shown is an astable multivibrator. Resistances R1, R2 may be replaced by inductors (Fig. 4, not shown). Figs. 5 and 6 (not shown) depict bi-stable and monostable circuits respectively, each parallel branch including two of the semi-conductor devices in series with the common point of the devices in each branch connected to the reactive circuit of the other branch. In the bi-stable circuit, both common points are connected to a common input terminal for triggering pulses, each pulse switching on both devices in one branch and hence switching off both devices in the other branch, and vice versa. In the monostable circuit, the common point of the devices of one branch is connected to a trigger input terminal, each pulse switching on both devices of the one branch and hence switching off both devices of the other, and the common point in the other branch has associated therewith an RC timing network for switching on both devices of the other branch and hence switching off both devices of the one branch, a predetermined time after the triggering of the circuit by an input pulse.
Patent GB-853516-A (GB)
Title: Improvements in windscreen wipers
IPC: B60S1/34
Filed: 1956-11-22
Abstract: 853,516. Windscreen cleaners. TRICO - PRODUCTS CORPORATION. Nov. 22, 1956 [Nov. 22, 1955], No. 35766/56. Class 138(1). A windscreen wiper assembly, particularly for use on curved windscreens, comprises a main arm 8 attached at its inner end to an operating shaft 5 and carrying on its outer end a laterally extending normalizing arm 11 connected by a pivot 12 to mounting 10 fixed on the main arm. Spring 13 anchored respectively to mounting 10 and arm 11 urges wiper 3, which is carried on the free end of arm 11, toward the windscreen. The wiping blade is preferably parallel to main arm 8 ; in two modifications (a) the blade is oblique with respect to the normalizing arm, Fig. 9 (not shown), and (b) the blade is at right angles to the normalizing arm, the latter being oblique to the direction of the main arm, Fig. 10 (not shown). Two ways of connecting the normalizing arm to the wiper. are disclosed, Fig. 6, and Figs. 7 and 8 (not shown).
Patent GB-843814-A (GB)
Title: Improvements in or relating to electric incandescent lamps and similar devices and method of manufacture
IPC: D01F2/10
Filed: 1956-11-23
Abstract: 843,814. Discharge tubes. GENERAL ELECTRIC CO. Nov. 23, 1956 [Nov. 28, 1955], No. 35898/56. Class 39(1). [Also in Group XI] An electric discharge tube is constructed with a glass stem press having an exhaust tube or passageway extending therethrough and maintained open, during the press-forming operation, by a coating on the wall of the exhaust tube or passageway of a material having a melting point above that of the glass and chemically inert with respect to the filament at the incandescent operating temperature thereof. The exhaust tube 9 which is assembled with the leading-in conductors 4 within the neck 11 of the bulb and heated in the usual manner prior to pinching between jaws 15, Fig. 3, consists generally of a soft glass having a melting point of about 650‹C, the bulb or bulb stem being made of a similar glass, so that the coating material 10 which is applied preferably to the inside wall of the bore of the tube should be of a material that is stable both physically and chemically up to at least the tipping off temperature of about 700‹C. Alternatively a coating 10<SP>1</SP> may be applied to the outside wall of the tube 9, or both inside and outside walls may be coated. The coating may consist of aluminium or silver, or the oxides of aluminium, silver, zirconium, magnesium, titanium, zinc, &c. or refractory materials such as silicates, double silicates and titanates. Coating materials which are light or white in colour are preferred for their heat-reflecting characteristics which minimize the likelihood of the softening and closing of the glass exhaust tube. The oxide and silicates of zirconium perform the additional function of producing a distinctive coloured glow within the lamp bulb during the highfrequency glow testing to determine the degree of vacuum in the lamp envelope.
Patent GB-1367182-A (GB)
Title: Preparation of 2-pyrrolidinone
IPC: C07D201/08
Filed: 1972-08-02
Abstract: 1367182 γ-Butyrolactam SUN RESEARCH & DEVELOPMENT CO 2 Aug 1972 [2 Aug 1971] 36005/72 Heading C2C γ-Butyrolactam (2-pyrrolidinone) is obtained by reacting acrylonitrile and hydrogen cyanide in an aqueous system at between 100‹ and 300‹ C., at a hydrogen pressure of 500 to 2500 p.s.i.g. and in the presence of a catalyst-base combination of Ru/C and a quaternary ammonium hydroxide. The product may be isolated by stripping off the solvent and vacuum distilling off the product. In the examples quaternary bases used are benzyltrimethyl ammonium-hydroxide, phenyltrimethyl ammonium hydroxide and tetra-nbutyl ammonium hydroxide.