baber/WOPTO huggingface dataset:
Patent GB-279126-A (GB)
Title: Co-listening attachment for the receivers of telephone apparatus
IPC: H04M1/215
Filed: 1927-10-17
Abstract: 279,126. M³ller, J. Oct. 16, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Earpieces and attachments.-An auxiliary earpiece 1 is clipped over the telephone receiver 4 and communicates by way of a tube 8 with a second earpiece 10 so as to enable a second person to listen. The auxiliary earpiece 1, Fig. 2, is formed with a cavity 5 communicating with an outer hole 6 and with a bore 7 leading to one end of the tube 8, the other end of which communicates by way of bore 12, Fig. 3, with the cavity 11 in the second earpiece 10. A thin perforated disc 15 is placed behind the opening 13 in the cap 14, a felt ring 16 being interposed between the cap and casing 10. An apertured sheet 9 of felt &c. is also arranged between the back of the earpiece 1 and receiver 4.
Patent GB-469464-A (GB)
Title: Improvements in automatic telephone calling apparatus
IPC: H04M1/274
Filed: 1935-10-05
Abstract: 469,464. Impulse transmitters. GOLDBERGER, E. Oct. 5, 1935, No. 27593. Void.. Convention date, Oct. 5, 1934. [Class 40 (iv)] Apparatus for controlling the sending of frequently wanted numbers by an impulse transmitter of the dial type comprises for each number a set of rotatable keys V which are preset in accordance with the digits to bring contact arms U into selective engagement with conductors D to control a clutch magnet K which couples a motor M to the dial. Number discs F visible through holes in the casing indicate the setting of the keys. To send a number, a knob C is slid opposite the appropriate set of the keys and is then moved. sideways to connect the arms U to the terminals of a step-by-step switch S which brings the clutch magnet K under control of the arms U in turn, the magnet K being dependent on a relay L which is connected to conductors Dover contacts E. The motor M makes one revolution at each step of the switch S and opens contacts E in turn, so that the dial is rotated until the circuit of relay L is opened at the relevant contact and the clutch is released. Impulses are sent during the return movement of the dial in the usual manner. For use in private exchanges, the knob C may be movable to a position in which it controls the sending of a single digit for initiating an outgoing call independently of the keys by marking one of contacts E directly.
Patent GB-242446-A (GB)
Title: Improvements relating to concrete construction
IPC: E04B2/84
Filed: 1924-11-19
Abstract: 242,446. Hoogewerff, J. J., (Naamlooze Vennootschap Nederlandsche Betonbouw Onderneming v.h. P. Kossel & Co.). Nov. 19, 1924. Double walls.-A wall is cast in situ between removable shutters a and as the concrete is setting, stepped cores increasing in diameter from the, bottom upwards are driven in to form stepped hollows ; after removal of the cores, closing discs e are dropped on to the shelves to close the hollows. Above the hollows in each height of wall a continuous reinforced concrete girder f is cast around the whole building. A porous concrete used in construction is formed by mixing one volume, of cement with 3 ¢ parts each of coarse sand or gravel, clinker breeze, blast furnace breeze and pumice gravel.
Patent GB-488762-A (GB)
Title: Improvements in and relating to two-stroke-cycle internalcombustion engines
IPC: F02B25/00
Filed: 1936-10-13
Abstract: 488,762. Pumps; valves. BAUFELDT, R., CLOUTS, H., and FIDDEL, L. Oct. 13, 1936, No. 27821. [Classes 7 (ii) and 7 (vi)] Mixture is supplied under pressure by a blower or boosting device to an auxiliary cylinder C where it is compressed by a valve piston B which controls the transfer of the mixture through a port D into the working cylinder A, the piston B being operated directly from the crank-shaft by a connecting-rod K and commencing to uncover the transfer port D when it is approximately at the middle of its outward stroke and the working piston F is at the dead-centre position and the transfer port being opened only after the exhaust port M has been partly closed. One auxiliary cylinder may serve two or more working cylinders and the length of the transfer port may be only slightly less than half the stroke of the valve piston.
Patent GB-410104-A (GB)
Title: Improvements in the method of coating iron or steel articles with aluminium
IPC: C23C2/12
Filed: 1932-10-07
Abstract: 410,104. Metal-coating furnaces. DELLGREN, K., 24, Lõnsmansvõgen, Stockholm. Oct. 7, 1932, No. 27928. Convention date, Oct. 23, 1931. [Class 51 (ii).] A furnace A for use in coating iron or steel articles with aluminium comprises an upper chamber B, the floor of which consists of two crucibles or baths C, D containing molten salts and molten aluminium respectively. Heating chambers M are provided below the baths. The articles, which enter the furnace by a winged wheel F, are passed through the baths by revolving paddle boards L and are discharged through a passage Q and a winged wheel G, the latter being wholly or partially surrounded by a cooling jacket K. A reducing atmosphere, e.g. a mixture of lighting gas or hydrogen and vaporized zinc chloride or ammonium chloride, is maintained in the chamber B and the tube Q.
Patent GB-535735-A (GB)
Title: Improvements relating to reactances particularly for use in connection with circuit arrangements for gaseous electric discharge lamps
IPC: H05B41/10
Filed: 1939-10-16
Abstract: 535,735. Electromagnetic interrupters. BRITISH THOMSON-HOUSTON CO., Ltd., and KINMAN, T. H. Oct. 16, 1939, No. 27953. [Class 38 (v)] [Also in Group XXXV] A reactance has a three limbed core comprising an air gap so that leakage flux may vibrate an armature operating a switch contact 6. The motion is damped by a member 10 of insulating material engaging the core. An electric discharge lamp 11, having cathodes heated prior to the application of operating potential has such a reactance 3 arranged in series with the discharge space and the switch when closed completes the heating circuit which also passes through the reactance. When the discharge is established the vibration ceases and the switch contacts remain open. A condenser may be connected across the switch contacts to reduce sparking.
Patent GB-1237683-A (GB)
Title: Improvements in or relating to moulding
Inventor: WALE EDWARD HORACE
IPC: B29C45/37
Filed: 1967-06-17
Abstract: 1,237,683. Lined mould assembly. BRITISH UNITED SHOE MACHINERY CO. Ltd. 17 June, 1968 [17 June, 1967], No. 28020/67. Addition to 1,197,727. Heading B5A. A mould assembly for shoe bottom units having a plurality of mould members also comprises a portion of flexible sheet material having a first surface non-adherent to moulding material and a second receptive to adhesive to secure it to the sole mould member, the first surface providing a patterned mould surface corresponding to at least part of the wear surface of the shoe. The adhesion-receptive material may be fibrous, e.g. fibre glass or linen; the adhesion-resistant material may be an elastomer, e.g. silicone rubber. The sheet may be removed from the sole mould member to be replaced by another having a different pattern.
Patent GB-1430996-A (GB)
Title: Pincer type tin opener
IPC: B67B7/00
Filed: 1973-06-12
Abstract: 1430996 Tin-openers IL PARADISO SA 12 June 1973 [21 June 1972] 28034/73 Heading B8D The pivotally-connected sheet metal arms 3 and 4 of a pincer-type tin opener, which respectively carry cutting and traction wheels 11 and 12 and intermeshing toothed wheels (not shown) are each constituted by a single thickness of metal of planar form and respectively provided with a guide pin 9 and a co-operating arcuate slot 10, Figs. 3 (not shown), having its radius of curvature centred on the pivotal axis 8 of the arms to limit the opening of the arms to a predetermined angle, e.g. 20 degrees. The arms have handle extensions 1 and 2 which may have covering sleeves. The cutting wheel axle 6 is inclined to the plane of the arm 3 and extends from a bulged out portion 5, Fig. 2 (not shown).
Patent GB-639956-A (GB)
Title: Improvements in or relating to detachable junction plate and rod assemblies
IPC: A63H33/10
Filed: 1947-10-20
Abstract: 639,956. Constructional set. MINNEE, J. F., and FRANSEN, R. Oct. 20, 1947, No. 28041. Convention date, Oct. 18, 1946. [Class 132 (iii)] In a junction plate and rod assembly, at least one end of each rod is axially slit to form two resilient prongs, adapted to embrace yieldingly the edge of the junction-plate, and one of the prongs is provided at its inner face with a preferably rounded protuberance adapted to engage an aperture formed in the plate, under the resilient pressure of the prongs, so as to connect the rod pivotally to the plate. As shown, the rod 1 has an axial slit 2 forming prongs 3 and 4, there being a protuberance 5 on prong 3. The junction plate 7, as shown in Fig. 2, has apertures 8 in which the protuberance 5 engages as shown in Fig. 4 when the plate is pushed between the prongs. The plate may be shaped as shown in Fig. 6 to embrace a rod or may be hexagonal and suitably perforated. The set may be used for demonstrating force distribution in frame-works. The Specification as open to inspection under Sect. 91 describes also the use of tubes instead of rods. Each arm of the rod or tube may have one or two opposing protuberances and the grip of the prongs may be increased by a sleeve 9 which slides on the rod or.tube as shown in Fig. 6 (Cancelled). Hinges may be formed by two junction plates adapted to engage a rod as shown in Fig. 11 (Cancelled). Similarly various other hinges may be formed, for example, a double winged plate, as shown in Fig. 6, may be engaged by a plate 7g to form a triple hinge. This subject-matter does not appear in the Specification as accepted.
Patent GB-390819-A (GB)
Title: Improvements in or relating to the colouration of textile materials
IPC: D06P1/32
Filed: 1931-10-09
Abstract: Cellulose esters or ethers, dyeing; aniline-black dyeing; printing.--Black shdes are obtained on materials made of or containing cellulose esters or ethers by oxidizing aniline thereon in presence of a chemically equivalent quantity of mineral acid and in presence of formic acid.  Other substances having an acid reaction, whether inorganic or organic, e.g. acetic, glycollic or lactic acid or any of the acidic bodies used according to the parent Specification, may be present.  The following examples are specified: (1) A cellulose acetate fabric is printed with a mixture containing aniline salt, formic acid, methylated spirit, gum arabic, sodium chlorate, cupric chloride, and water, dried, aged for 3-4 mins. in dry steam, further treated in an aqueous bath containing sodium bichromate and acetic acid, rinsed, soaped, rinsed and dried to obtain a full " ungreenable " black pattern. (2) A cellulose acetate woven fabric is printed with a mixture containing aniline salt, formic acid, methylated spirit, Sapamine (Registered Trade Mark) CH, gum arabic, sodium chlorate, cupric chloride, and water, and is further treated as in (1) to obtain a similar black pattern.  (3) A cellulose acetate fabric is padded with an aqueous solution containing aniline salt, formic acid, methylated spirit, Sapamine CH, sodium chlorate, and cupric chloride, so that the fabric retains its own weight of the solution, aged for 5-7 mins. in dry steam and further treated as in (1) to obtain a full " ungreenable " black dyeing.
Patent GB-634095-A (GB)
Title: Fuel feed and power control system of device for gas turbines, jet engines and the like
IPC: F02C7/22
Filed: 1946-09-18
Abstract: 634,095. Fluid-pressure servomotor-control systems. BENDIX AVIATION CORPORATION. Sept. 18, 1946, No. 28064. Convention date, Oct. 6, 1945. [Class 135] [Also in Group XXVI] The fuel supply to the burners 20, Fig. 1, of a gas turbine or jet engine is controlled by a unit 25 disposed in an annular chamber exposed to atmospheric air or ram pressure and including a metering valve 52, Fig. 2, adapted to be regulated by the pilot's control lever 60 and a turbine-driven speed-governor 56, or, alternatively, by the pilot's lever alone, and the pressure drop across which is maintained substantially constant for a given value of the air density by a regulator unit R. As shown, the turbine-driven pump 27 discharges into a housing 40 having outlet ports 41, 41<SP>1</SP> controlled by a valve 39 regulated by a spring- loaded diaphragm 38, the spaces C, D on the opposite sides of which are connected by a bleed-hole 44. From the spaces C, D, the fuel flows through ducts 46, 70, the latter of which is provided with an aneroid-controlled throttle valve 72, into the metering valve housing 45 and the enclosure E. To accelerate, the pilot moves the lever 60 to the right, thus opening the valve 52 through the lever 64 and the spring 66 disposed between the fixed and free collars 67, 65 respectively on the valve spindle 53. The valve is also influenced by the speed governor, the fingers 55<SP>1</SP> of which bear on the outer race of a ball-bearing, the inner race of which is mounted on the valve spindle. Any change in barometric pressure, and thus in the air density, reacts on the throttle valve 72 through the aneroid to change the pressure drop across the valve 72 and, therefore, across the valve 52. A predetermined pressure drop between the pump outlet and the outlet 48 from the enclosure E is maintained by a valve 28 operated by a spring-loaded diaphragm 33 and controlling the return flow between the pump outlet pipe 32<SP>1</SP> and the fuel supply pipe 26. Specifications 603,884 and 608,031, [Group XI], are referred to.
Patent GB-849555-A (GB)
Title: Method for the manufacture of hemispherically-shaped parachutes made of tapes, and parachutes as manufactured
IPC: B64D17/02
Filed: 1956-09-14
Abstract: 849,555. Parachutes. KOSTELEZKY, W. Sept. 14, 1956, No. 28102/56. Class 4. A ribbon parachute is constructed from an initially flat panel comprising two parallel webs 4<SP>1</SP>, 4<SP>11</SP> equally disposed about a medium line M-M<SP>1</SP>, intermediate webs 5<SP>1</SP>, 5<SP>11</SP> curved in towards the centre as shown in Fig. 1 and two similarly curved webs 6<SP>1</SP>, 6<SP>11</SP> which form the skirt of the parachute and are each of slightly greater length than the maximum circumference of the parachute. The webs 41, 4<SP>11</SP> and 51, 511 are also of slightly greater length than the circumference of the parachute corresponding to their positions. A plurality of ribbons, such as 1, are attached to web 6<SP>11</SP> and arranged fanwise as shown in Fig. 1 for attachment to webs 5<SP>11</SP> and 4<SP>11</SP>. They are then twisted through 180 degrees before being similarly attached to webs 41, 5<SP>1</SP> and 6<SP>1</SP>. By this means a plane panel is formed symmetrical about line M-M<SP>1</SP>, and this is placed on a shaped template having an opening corresponding to the parachute vent. Before being placed on the template the points of interesection of the ribbons with line M-M<SP>1</SP> are marked on the respective ribbons and one half of the panel above or below M-Ml is rotated through 180 degrees. The two halves of the panel are then lapped one with respect to the other so that the ends of web 6<SP>1</SP> overlap with the intermediate part of web 6<SP>11</SP> sandwiched there between and the ends of web 6<SP>11</SP> overlap with the intermediate part of web 6<SP>1</SP> sandwiched there between at a point diametrally opposite the other overlap. Webs 4 and 5 are similarly lapped. The ribbons then lie across the parachute tangential to the vent opening as shown in Fig. 2, with the mid-point markings in contact with the vent circumference. The parachute structure is then completed by sewing or other means of attachment.
Patent GB-1487171-A (GB)
Title: Plastics compositions and shaped articles therefrom
IPC: C08L25/00
Filed: 1973-06-13
Abstract: 1487171 Polymer compositions BAKELITE XYLONITE Ltd 12 Sept 1974 [13 June 1973] 28176/73 Heading C3P Compositions for making shaped articles comprise by weight (1) 100 parts of high density ethylene polymer and/or a propylene polymer, (2) 5 to 100 parts of a polymer or copolymer of styrene or a methyl substituted styrene containing at least 50% of styrene and/or methyl styrene, (3) 0À5 to 20 parts of butyl rubber and (4) 0 to 20 parts of an ethylene/vinyl copolymer. The compositions may also contain fillers and pigments and may be made into uni- or biaxially stretched sheets suitable for use as paper substitutes which are free from "ghosting" in lithographic printing processes. Examples describe the preparation of sheets from compositions comprising high density polyethylene, polystyrene, butyl rubber, ethylene/vinyl acetate copolymer, titanium dioxide, calcium carbonate and an amine-type antistatic agent.
Patent GB-920585-A (GB)
Title: Frequency measurement
Inventor: KEITH-WALKER DEREK GRAHAM
IPC: G01R23/04
Filed: 1960-08-15
Abstract: 920,585. Measuring frequency and frequency characteristics of components. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 4, 1961 [Aug. 15, 1960], No. 28198/60. Class 37. A microwave signal generator 3, Fig. 1, feeds a delay line 1 terminated by a reflector 2, the incident and reflected waves being fed to a detector 4 whose output thereby contains a component varying in amplitude sinusoidally with frequency variations of the signal generator. The incident and reflected waves are also fed through a test component 7, whose frequency characteristics are to be determined, to a detector 8 similar to 4. The outputs of the detectors 4, 8 are similarly amplified at 5, 9 and fed respectively to the X and Y plates of an oscilloscope 6. The frequency difference corresponding to any length of the X-trace can readily be calculated so that the magnitude of the output from the test component for any input frequency is indicated by the C.R.T. trace. In another embodiment, Fig. 2, the test component output may be measured by known means. In addition, the total frequency variation of the generator 11 is measured by an integrator comprising three similar detectors 12, 13, 14 coupled into the delay line so as to produce outputs spaced by 120 degrees, and feeding via D.C. amplifiers an angle measuring unit 18 comprising a threephase wound stator and a D.C. energized rotor. The rotor operates a multi-pointer dial or mechanical counter indicating frequency changes. Alternatively, a single detector may be used to operate a counter which totals the cycles of the detector output.
Patent GB-671488-A (GB)
Title: Improvements in feeding devices for roller mills for cereal products
Inventor: BALL JOHN STEPHEN
IPC: B02C4/28
Filed: 1949-11-03
Abstract: 671,488. Roller mills. SIMON (HOLDINGS), Ltd., H. Oct. 9,1950 [Nov. 3, 1949], No. 28206/49. Class 59. In a roller mill for cereal products, Fig. 1, the feed roll b or pair of feed rolls for each pair of grinding rolls a is rotated by an hydraulic motor w, Fig. 2, having its supply of fluid and consequentlyits speed controlled by the position of a balance plate d or the like in a feed hopper e, the position of the plate being determined by the head of stock in the hopper. The plate d at one side of a duplex mill is balanced to move into the position illustrated in full lines in Fig. 1 and supported by a lever f pivoted at g and having a slot i carrying a roller h which engages an arm j to pivot a feed gate c about an axis k. A plate 7 prevents material from passing behind the gate c, and link m connects the lever f to a bellcrank lever n, o provided with a slot, Fig. 2, to engage a weight p which it can move along a beam q pivoted at r. The lever q acts on a rod t to control a ball-valve s disposed in the fluid supply line between the motor wand its driving pump u which is driven by a pulley v and may be housed in the same casing as the motor so as to have a common reservoir. In a modification, Fig. 3, the lever n is coupled by a rod 2 to an arm 3 for actuating a valve 4 controlling the flow of fluid to the motor w which stops when the balance plate d swings into the position illustrated in full lines in Fig. 1. Safety valves 5, 6, are provided on the pump and valve 4.
Patent GB-426180-A (GB)
Title: Improvements in or relating to vapour electric discharge devices
IPC: H01J13/34
Filed: 1933-11-21
Abstract: 426,180. Converting. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, Pennsylvania, U.S.A.-(Assignees of Slepian, J. ; 1115, Lancaster Street, Pittsburg, and Ludwig, L. R. ; 738, Princeton Boulevard, Wilkinsburg, both in Pennsylvania, U.S.A.) Nov. 21, 1933, No. 28233/34. Convention date, Nov. 25, 1932. Divided out of 426,360. [Class 38 (ii)] [See also Group XL] A mercury-arc rectifier comprises a cathode 1 spaced by an insulator 2 from an anode which consists of a plate 3 and a water-cooled jacket 4. A tubular auxiliary electrode 35 is provided with a heater 38, a quartz extension 36 dipping into the cathode, and a nozzle 37 which directs vapour on to the cathode to form the auxiliary arc. The electrode 35 is connected to the supply transformer 9 through a rectifier 8 and a transformer 20, and the heater is energized by a battery 39.
Patent GB-1415761-A (GB)
Title: Crosspoint matrix
IPC: H03K17/72
Filed: 1973-06-14
Abstract: 1415761 Automatic exchange systems INTERNATIONAL STANDARD ELECTRIC CORP 14 June 1973 [20 June 1972] 28286/73 Heading H4K In a switching matrix in which each crosspoint element is a semiconductor device having a gate terminal and at least two signal terminals, e.g. a four-terminal silicon controlled switch or thyristor, firing of a crosspoint is effected by the simultaneous presence thereat of row and column marking voltages, each of which must be greater (or less) than a respective threshold, and a gating signal. One of the marking voltages may be a fixed bias voltage. Associated with each crosspoint is an AND- gate 70, Fig. 2. One input of this gate is connected to a row marking voltage threshold detector 80 while the other input is connected to a further AND-gate 90 to whose two inputs a gating signal and a threshold-exeeding column marking voltage are applied. Once a crosspoint is fired, its signal terminals are held by the end marking voltages within the signalling information voltage band, which is located between the positive and regative thresholds, Fig. 3 (not shown). Hence further marking voltages applied to the two conductors defining a crosspoint are unable to satisfy the threshold conditions and the seized path cannot be broken into. The four-stage network shown is end-marked in response to a station going off-hook. The PV and SH conductors in the primary and secondary stages are kept permanently below a negative threshold voltage, and scanners 14 provide the gating signals. In the quaternary stage the gate conductors are permanently enabled to a positive mark signal from the tertiary stage on a QV conductor is sufficient to fire a crosspoint. In response to an end mark on a QH conductor, tertiary control 16 provides all TV conductors with a marking voltage below a negative threshold, hence allowing completion of a path through the network. The matrices may be integrated circuits.
Patent GB-1454577-A (GB)
Title: Process for purifying quartz sand
IPC: C03C1/02
Filed: 1974-06-26
Abstract: 1454577 Purifying quartz sand A AHLSTROM OSAKEYHTIO 26 June 1974 [5 July 1973] 28366/74 Heading C1A In a process for purifying quartz sand by reacting it with aqueous HF (e.g. 2-30 wt. per cent) at elevated temperature (e.g. at 70- 80 C. for maximum 30 mins.), HF is regenerated from a separated liquid phase containing silicofluoric acid by reacting it with NH 3  or a solution thereof (e.g. at 70-80 C.), thereby precipitating silicic acid, adding H 2 SO 4  to precipitate (NH 4 ) 2 SO 4  and recovering a solution containing free HF, which may be recycled. The sand may first be washed with water or acid to remove lone impurities, or subjected to magnetic separation of iron.