baber/WOPTO huggingface dataset:
Patent GB-493583-A (GB)
Title: Improvements in or relating to high-power high-tension electric condensers
IPC: H01G4/38
Filed: 1937-11-03
Abstract: 493,583. Condensers. SIEMENSSCHUCKERTWERKE AKT.-GES. Nov. 3, 1937, No. 30126. Convention date, Nov. 3, 1936. [Class 37] In a high-power condenser consisting of sections of differing potential, each section 1 consists of at least one metal container supported on a base plate 5 by insulators 3, individual to each section, and relative to adjacent sections by members 8 extending between them, so that the sections, the insulators and the base plate form a rigid framework. In modifications, the lateral members 8 may comprise vertical insulators with an insulating cross piece or insulators inclined outwards and upwards. The members 8 may also be combined with the lead-in insulators 2. The base plates 5 may themselves be mounted on further insulators 6 on a base 7. The insulators 3 may be linked by integral strips at top and bottom to effect a more rigid mounting.
Patent GB-302515-A (GB)
Abstract: 302,515. Hirst, H. S., and Imperial Chemical Industries, Ltd. Jan. 25, 1928. Acetaldehyde is obtained from acetylene contained in gaseous mixtures containing relatively small amounts (2-10 per cent) of this constituent, obtained, for example, by treatment of methane-containing gas in an electric arc or furnace or by passing methane through a bed of incandescent coke. The process is carried out by washing the gases in countercurrent with a suitable catalytic solution in a tower at 60-70‹ C., either at normal or at pressures up to 10 atmospheres. The catalytic liquor may contain, for example, 10-20 per cent sulphuric acid; 1 per cent mercuric sulphate; 7 per cent ferric sulphate. The liquor is circulated rapidly, and any sludge formed is removed on issuing from the tower, and fresh clean liquid returned to the process. To maintain the concentration of mercuric salt, the catalytic liquor may be passed through an electrolytic oxidizing plant, and the recovered sludge may be treated for recovery of mercury. The acetaldehyde may be removed by scrubbing with water, and the residual gas, if containing methane or other hydrocarbon, may be treated to produce acetylene.
Patent GB-900893-A (GB)
Title: Improvements relating to magnetic-recording heads
IPC: G11B5/187
Filed: 1960-09-02
Abstract: 900,893. Making magnetic heads. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 2, 1960 [Sept. 5, 1959], No. 30373/60. Class 83 (2). [Also in Group XXXVIII] A magnetic record/playback head is made by cementing two plane blocks of ferrite 1, 2 together by a high melting-point cement 3 to provide a gap of desired thickness, cutting out separate pole-shoes 5 from the block and attaching the shoes to a wound core 9 by encapsulating the whole in resin 11. The surface is subsequently ground and polished at 12. Stacked, screened heads are made by suitably grooving a single pole-shoe member 71 to accommodate screens 81, held by the encapsulation the heads being magnetically separated by grinding and polishing to the profile 83. A thick pole-shoe member may be grooved 73 to reduce the height of the gap 77 and rebates 85, 86 may be engaged by a clip (Fig. 9, not shown) which holds the components together during and is retained in the encapsulation.
Patent GB-793121-A (GB)
Title: A method of stretching leather footwear
IPC: A43D3/08
Filed: 1955-10-25
Abstract: 793,121. Stretching footwear. ROSS, G. W. Oct. 25, 1956 [Oct. 25, 1955], No. 30419/55. Class 17(2) A method of stretching leather footwear comprises mellowing the leather by wetting it with a soapless detergent preferably containing a sulphated fatty alcohol. The liquid is poured into the article and swirled around before the excess is drained and if desired the exterior may be brushed. Thus treated the article is stretched and dried in a warm air draught being substantially dry before removal from the stretcher to give a permanent set.
Patent GB-792927-A (GB)
Title: Improvements in or relating to the separation of hydrogen chloride and hydrogen fluoride
Inventor: CATHALA MARIE EDOUARD JOSEPH
IPC: C01B7/01
Filed: 1955-10-25
Abstract: Gaseous hydrogen chloride is separated from hydrogen fluoride by passing the gas mixture through an absorption apparatus with a liquid feed consisting of sulphur trioxide and water, preferably in a two-stage countercurrent operation.  The composition of the feed may be 22.5 to 6.5 per cent water, preferably 20.0 to 13.8 per cent water.
Patent GB-320771-A (GB)
Title: Improvements in and connected with liquid dispensing devices
IPC: B67D3/00
Filed: 1928-10-22
Abstract: 320,771. Newnham, C. H. Oct 22, 1928. Moving - chamber apparatus operated by the receptacle.- T h e measuring chamber consists of a hollow cylinder 7 slidable within a sleeve 5 carried in a bracket 4 secured to the mouth of the bottle or other inverted container 1. The chamber is filled by way of the passages 3a and port 7b, there being an air vent from the upper part of the container through passage 8 and port 7c. A depending rod 11 carries an apertured bracket 15 against which a tumbler may be pressed, elevating the chamber 7 until an opening 7d therein registers with a port 10 in the delivery passage 14. An opening 17 simultaneously registers with the port 7c.
Patent GB-835817-A (GB)
Title: Resistance unit for use in a clinical thermometer
Inventor: BENNETT FRANK KENNETH
IPC: G01K5/22
Filed: 1957-09-30
Abstract: 835,817. Electrical measuring systems. VICTORY ENGINEERING CORPORATION. Sept. 30, 1957, No. 30506/57. Class 40 (1). In a clinical thermometer comprising a discshaped thermally sensitive resistor 15, connected to a resistance measuring device 21, the resistor- 15 is soldered inside a conductive cap 16, preferably of silver, which is fitted over one end of a rod 10 of insulating material, e.g. hard rubber or plastic, so as to provide a thermally insulating air-filled chamber 13, and the resistor 15 is connected to a lead-out conductor 17 in the rod 10 by a very fine wire 17a, the other. connection to the resistor being made through the cap 16 and a second lead-out conductor 18. The resistance measuring device 21 is of the Wheatstone bridge type and comprises a D.C. microammeter or millivoltmeter, preferably of the centre-zero type, which may be calibrated in degrees.
Patent GB-246279-A (GB)
Title: Improvements in or relating to dust and like collectors and extractors
IPC: D01G15/82
Filed: 1924-12-19
Abstract: 246,279. Hall, D., Kay, J. H., and Hall & Kay, Ltd. Dec. 19, 1924. Dust collectors.-In dust collectors and extractors, especially those employed in textile mills wherein dust is drawn into a box or chamber from which it is removed by suction, the holes by which the dust enters are cleared by members such as star wheels or short pokers moved along each side of holes and mounted in a carrier which allows them to fall into the holes as they pass, removing any accumulation or film of dust. Fig. 1 shows a cleaner for the exhaust box of a frame for gasing yarn in which a star wheel 16 is rotatably mounted on a spindle 15 carried by a forked spring arm secured in a slotted holder 13 mounted on a cross member 12 at each side of the frame of the usual wall-sweeping brush. The foremost point of the wheel catches in the holes it meets, and is pressed down into them. Fig. 4 shows apparatus in which a poker 21 is mounted in a slotted carrier, its heavier end beinfi forced into the dust inlet holes by its own weight, supplemented in some cases by a spring surrounding its stem. Figs. 8 and 9 show scrapers 27 carried by rods 25 supported in bearings 26 on the brush frame and secured to flat springs 23 fixed to a member 24 on the brush frame. The twist given to the springs exerts a pressure on the scrapers. The cleaners may be mounted on a device separate from the brush frame.
Patent GB-639616-A (GB)
Title: Improvements in or relating to light resistant white chrome tanned leather and method of obtaining same
IPC: C14C3/02
Filed: 1947-11-18
Abstract: 639,616. Leather making. AMERICAN CYANAMID CO. Nov. 18, 1947, No. 30563. Convention date, Nov. 19, 1946. Addition to 569,385. [Class 76] Light-resistant white chrome tanned leather is obtained by impregnating chrome tanned leather with an aromatic sulphonated tanning agent and with a water-soluble methylol melamine. The said tanning agent may be a disulphodinaphthylmethane formed by condensing two molecules of a naphthalene sulphonic acid with one molecule of formaldehyde or a formaldehyde condensation product of a sulphonated phenol or cresol. While the neutralized product, desirably having a pH 6 to 8, is preferred, the alkaline or acid form may be used. The methylol melamine should remain water soluble in the presence of salt (NaCl), e.g. trimethylol melamine the preparation of which is given. The methylol melamine is usually applied after the aromatic sulphonate tanning agent, but it may be applied simultaneously therewith or even prior thereto. In the example, low-grade cowhides are chrome tanned in the presence of sodium chloride, neutralized with NaHCO 3 , washed with water, treated with a 3 per cent solution of a disulphodinaphthylmethane of pH 6 to 8, washed and treated with 3.5 per cent of trimethylol melamine in aqueous solution, washed and fat liquored with 5 per cent sulphonated vegetable oil, 1 per cent neatsfoot oil and 4 per cent titanium dioxide. Specification 569,386 is referred to,
Patent GB-455570-A (GB)
Title: An improved process for the continuous nitration of aromatic hydrocarbons
IPC: B01J19/18
Filed: 1935-11-06
Abstract: <PICT:0455570/IV/1> In a process for the continuous nitration of aromatic hydrocarbons, the nitration mixture comprising nitrating acid and hydrocarbons is positively circulated through a cooler in a nitrating vessel, the nitration being so conducted that the aromatic hydrocarbons are first subjected to a preparatory nitration with weakened acid in the upper part of the vessel and the nitration completed by strong acid supplied to the lower part.  Air is emulsified into the nitrating mixture by a suitable agitating device. The apparatus is first filled with nitrating acid, whereupon a continuous stream of hydrocarbon to be nitrated (e.g. toluol) is introduced through a pipe 1, while fresh acid is continuously supplied through a valve 2.  The screw 4 circulates the mixture down the central space and up the outer cooling tubes 6, while the inclined vanes 5 mix the reactants and at the same time beat in air which has been drawn in at 10 through the loose-fitting glass top 9. The treated mixture is discharged through the opening 7.ALSO:In a process for the continuous nitration of aromatic hydrocarbons, the nitration <PICT:0455570/III/1> mixture comprising nitrating acid and hydrocarbons is positively circulated through a cooler in a nitrating vessel, the nitration being so conducted that the aromatic hydrocarbons are first subjected to a preparatory nitration with weakened acid in the upper part of the nitrating vessel and the nitration is completed by strong acid supplied to the lower portion of the apparatus. Also, air is emulsified into the nitrating mixture by a suitable agitating device.  The apparatus is first filled with nitrating acid, whereupon a continuous stream of hydrocarbon to be nitrated (e.g. toluol) is introduced through a pipe 1, while fresh acid is continuously supplied through a valve 2.  The screw 4 circulates the mixture down the central space and up the outer cooling tubes 6, while the inclined vanes 5 mix the reactants and at the same time beat in air which has been drawn in at 10 through the loose-fitting glass top 9.  The treated mixture is discharged through the opening 7.
Patent GB-1321282-A (GB)
Title: Electronic or electrical circuit component and apparatus and  method of making same
IPC: H05K7/00
Filed: 1970-06-24
Abstract: 1321282 Moulding electrical components US ELECTRONIC SERVICES CORP 24 June 1970 [25 June 1969] 30718/70 Heading B5A [Also in Division H1] A method of making a microcircuit component 104 comprises placing a lead frame 98, e.g. of a Ni-Fe-Co alloy, having a plurality of leads extending towards each other in a female mould 66 somewhat wider than a space between the lead ends 100, providing a male member 34 of narrower width than the cavity and including inserts 44 of, e.g. PTFE on each side, placing a tray 88, e.g. of aluminium, in the cavity, closing the male member 34 on to the mould 66 and applying heat and pressure until indentations are formed in the inserts corresponding to the leads, removing the tray 88, and feeding a silicone, epoxy, or phenolic resin to the cavity to form a core 104 and embed the leads flash-free therein. The core may be formed by a small flat piece of plastics placed in the cavity prior to feeding the resin, which then forms a bend 108 thereon to embed the ends of the leads. The leads may be gold plated.
Patent GB-600590-A (GB)
Title: Improvements in hand brakes
IPC: B60T7/10
Filed: 1945-11-16
Abstract: 600,590. Brake-operating mechanism. AIR FREIN AUTOMOBILES. Nov. 16, 1945, No. 30809. Convention date, Nov. 17, 1944. [Class 103 (i)] Brake-operating mechanism of the kind in which an operating lever acts to effect an application of the brake during the return as well as the forward movement of the lever, comprises, as shown, a crank arm 4 secured to the shaft 2 of the hand lever 3 and connected by a pin-and-slot 14a to a lever 14, the shaft 13 of which is mounted on a pair of arms 5 rigidly connected by a bar 6 and freely mounted on the shaft 2. The lever 14 is connected by pull-rod 15 to the brake. Pawls 8, carried by the arms 5, normally engage fixed ratchets 9 to prevent return movement of the arms. Thus when the lever 3 is moved forward in the direction indicated in Fig. 1, the arm 4 engages the cross-bar 6 and the parts 5, 13, 14 move as one with the arm and lever 3, taking the pull-rod 15 in the brake applying direction. During the return movement of the lever 3, since the arms 5 are held from movement in this direction, the lever 14 is turned about the axis of the shaft 13, by the arm 4, in a direction to move the pull-rod 15 further and with increased leverage, in the brake-applying direction. To lock the brakes " on," the hand lever carries a pawl 17, which normally engages a fixed ratchet 18 to prevent forward movement of the lever. A lever 19 carried by the lever 3 and connected by link 43 to the pawl 17, engages a pin 21 on an extension 7 of the cross-bar 6 to disengage the pawl as soon as the lever 3 is moved forwards. To release the brake, a member 22 moved downwards on the lever 3 by rod 25 rocks the lever 19 through a link 24 to disengage the pawl 17 and engages a pin 12 on one of the pawls 8 to disengage both of these pawls which are connected by a cross-bar.
Patent GB-717898-A (GB)
Title: Improvements in or relating to processes for securing turbine blades to the wheel disc of a turbine rotor
IPC: B23K33/00
Filed: 1952-12-04
Abstract: 717,898. Turbine blades. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.-GES. Dec. 4, 1952 [Jan. 3, 1952], No. 30842/52. Class 110(3) [Also in Group XXII] A turbine blade is provided with a projection 5 at its root for engaging in a groove 6 in the wheel disc 2 of a turbine rotor and the blade is fixed to the disc by filling the recess 7a formed by inclined parts 7 on the blade root and disc periphery with welding material and then removing the projection 5 and groove 6 by machining a second recess 7b which is also filled with welding material. The blade projection may be inclined to the longitudinal axis of the blade.
Patent GB-437402-A (GB)
Title: Method and device for the regulation of electrically heated windscreens
IPC: H05B3/84
Filed: 1934-10-27
Abstract: 437,402. Thermal switches. SCHWARZ, A., Marienhohe, Eisenach, Germany. Oct. 27, 1934, Nos. 30849, 30850, and 30851. Convention dates, Dec. 30, 1933, March 23, 1934, and Sept. 11, 1934. [Class 38 (v)] [See also Group X] The formation of frost on motor car and like glass windscreens is prevented by heating wires supplied with electric current which is automatically controlled by means responsive to the heating of the wires or to other temperature sensitive apparatus. A glass pane is held in a metal frame 1 which is secured to the windscreen of a motor vehicle, for example, by suction pads ; heating wires 2, 3, 4 in parallel are each earthed at one end and supplied with current at the other end through push-pin 10, spring 9, contacts 7, 8, spring 5 and bar 6. When wire 2 expands due to the heating effect of the current, it allows spring 5 to separate contacts 7, 8 and break the circuit to all the wires 2, 3, 4 until wire 2 cools. The cut-in and cut-out points are adjusted by screw 11 engaging spring 9. The spring 5 may be replaced by a bi-metallic strip to avoid excessive tension in the wire 2. The spring 9 may be replaced by an arm which is adjusted by a liquid or gas thermostat to bring the apparatus into action automatically when the general temperature is low enough. The contacts 7, 8 may be made of carbon to obtain variation of resistance with variation of pressure between the contacts. In the arrangement shown in Fig. 3, the wires 21, 22, 23 are similarly supplied with current, an indicating lamp 29 being supplied when push-pin 26 is energized and a lamp 30 only when contacts 27, 28 are closed. A lamp may be associated with the hand-operated control switch. The lamps may be let into the frame. In the construction shown in Fig. 7, the carbon contacts are replaced by silver rollers 45, 46, one spring arm 42 being connected as before to the control wire 47, while the other arm 43 may be adjusted by the screw 44.
Patent GB-486839-A (GB)
Title: Improvements in or relating to polarisation filters
IPC: G02B27/28
Filed: 1937-11-11
Abstract: 486,839. Polarizing-apparatus ; colour photography. ZEISS IKON AKT.-GES. Nov. 11, 1937, No. 31009. Convention date, Jan. 29. [Classes 97 (i), 98 (i), and 98 (ii)] A polarization filter, particularly intended for use in colour photography &c., on lenticular films, comprises a polarizer, an analyzer, and one or more colour filters or selectively reflecting mirrors to enable a neutral grey weakening of the light to be obtained as the polarizer and analyzer are relatively rotated. As shown, a rotatable polarizer 4, an analyzer 3, and a colour filter 2 are mounted in a member 1 which can be attached to a photographic objective. Alternatively, the polarizer &c. may be made integral with the objective. The filter 2 may be replaced by a selectivelyreflecting mirror, preferably set at about 45‹ to the objective axis.
Patent GB-1202989-A (GB)
Title: Oxidation- and acid-resisting polymer composition
IPC: C08K5/12
Filed: 1968-06-28
Abstract: 1,202,989. Chlorinated polyethylene; polyepoxide compositions. TOYO RUBBER INDUSTRY CO. Ltd. and YAWATA IRON & STEEL CO. Ltd. 28 June, 1968 [30 June, 1967; 1 July, 1967], No. 31027/68. Headings C3B and C3P. [Also in Division F2] Compositions comprise by weight (1) 100 parts of chlorinated polyethylene, (2) 20 to 90 parts of titanium dioxide, up to 90 weight per cent of which may be replaced by barium sulphate, (3) 5 to 40 parts of a dialkyl phthalate, (4) 20 to 50 parts of litharge and (5) 0 to 45 parts of an epoxy resin, cured by an imidazoline compound as accelerator along or in combination with an organic peroxide. Preferred phthalates are dioctyl, diethyl and particularly dibutyl phthalates. The epoxy resin may be an epichloro - hydrin/Bisphenol A condensate. A preferred accelerator is 2-mercaptoimidazoline, and the preferred peroxide is dicumyl peroxide. The compositions may be used for making rollers and tank linings for apparatus for chromating metals or chromium plating.
Patent GB-244755-A (GB)
Title: Astatic alternating current meter according to the ferraris principle
IPC: G01R11/36
Filed: 1925-12-09
Abstract: 244,755. Landis et Gyr Soc. Anon. Dec. 19, 1924, [Convention date]. Induction motor meters are so constructed as to be astatic with respect to external magnetic fields. The pressure magnet 1 is C-shaped with a central limb 2, on which the pressure coil 3 is wound and has two extensions 8 of the outer limbs. Two discs 5 mounted on the same shaft 4 rotate in the gaps between the central limb 2 and the side extensions 8, and each is acted on by a U-shaped series magnet 6. A brake magnet 9 acts on one of the discs 5. In a modification the discs 5 are brought as close together as possible, the central limb of the pressure magnet being provided with side extensions. The brake magnet embraces both discs, and may have its magnetic circuit more nearly closed by an iron piece between the discs. Instead of dividing the shunt flux, and instead of forming the series flux as two coalescing magnetic circles, the fluxes may be divided or used in the form of coalescing fluxes. For polyphase meters one or more pairs of poles per phase may act on the moving element, or a separate moving element may be provided for each phase.
Patent GB-211218-A (GB)
Title: Improvements in vehicle wheels
IPC: B60B1/12
Filed: 1922-11-14
Abstract: 211,218. Kemp, E. Nov. 14, 1922. Spokes, securing; spring wheels.-A hollow felloe 2 is fitted with pins 3 guided by sleeves 3<a> in the outer ends of tubular spokes 1. Between the cupped portions 4 of the spokes and the sleeves 3<a> resilient cushions 6 are secured by washers 7. The pins are countersunk into a seating rim 9 and secured by an outer tyre 14.
Patent GB-865242-A (GB)
Title: Improvements in or relating to switch controlled circuit arrangements
Inventor: PARTINGTON GEORGE EARNSHAW
IPC: H03K17/74
Filed: 1958-09-30
Abstract: 865,242. Relay circuits. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. June 2, 1959 [Sept. 30, 1958], No. 31175/58. Class 40(6) A circuit adapted to detect coincidence of state of a number of switches comprises at least two impedances which connect equal and opposite voltages respectively through the switch means to a common point the values of the impedances being such that when all the switches are closed the voltage at the common point is zero, the voltage at the common point controlling a device connected to it. Fig. 1 shows a circuit in which it is required to detect the coincidence of state of a switch S1 with the group of switches S2 ... S6. Equal and opposite alternating voltages are fed from the secondary of the transformer T, balanced with respect to earth, to the two halves of the circuit respectively. Each of the resistances R2 . . . R6 has a value 5 times the value of R1 so that when all of the switches are closed the circuit balances, the common point A is at zero voltage, and no current flows through device RL which may be a relay. Whenever coincidence of state between switch S1 and the group of switches S2 ... S6 does not exist there is a voltage at point A and current flows in device RL. The resistances R1 &c. may be replaced by condensers or inductances of appropriate values. In the modification shown in Fig. 2 each group of the switches. S2... S6 of Fig. 1 is replaced by a single switch and the values of the resistances of each pair R7<SP>1</SP>, R7 &c. are equal. In the example shown in the Figure in which coincidence of state exists between switches S7, S8 and between switches S11 and S12 a voltage exists at the junction of resistors R8, R8<SP>1</SP> and current flows in device RL until switch S10 is also closed. The circuit thus acts as a detector of simultaneous coincidence of state between pairs of switches. Any of the switches shown in Fig. 2 may be replaced by a group of switches connected to a common point by resistance as shown in Fig. 1.