baber/WOPTO huggingface dataset:
Patent GB-578114-A (GB)
Title: Radio receivers
IPC: H03G3/26
Filed: 1940-12-20
Abstract: 578,114. Wireless receiving circuits. STANDARD TELEPHONES & CABLES, Ltd. Dec. 20, 1940, No. 17948. Convention date, Dec. 28, 1939. [Class 40 (v)] In a system for receiving signals subjected to noise there are provided two signal paths, one path including a modulator for combining the received signals with oscillations of constant frequency, a second modulator for combining the outputs of said two paths, means in the output of said second modulator for selecting oscillations of said constant frequency, and means for providing a relative time delay between the two paths so that noise currents in the output from the first modulator do not combine with corresponding noise currents in the other path to produce a cumulative output at the constant frequency. Fig. 2 shows the invention applied to a circuit for removing a short-circuit 32 across the output of a receiver on receipt of a signal carrier. The output from the intermediate frequency amplifier 28 is taken through a filter 38 wide enough to allow of possible fluctuations in carrier frequency by line 37 to a modulator 39 where it is combined with constant frequency oscillations from a source 40. One side band of the output of modulator 39 is selected by filters 41, 44 and combined with the original intermediate frequency from line 36 in a second modulator 42. The output from 42 includes the constant frequency from 40 and is selected by a very narrow crystal bridge filter 43, a second filter 51 excluding the constant frequency but passing noise currents. The outputs from 43, 51 are rectified at 49, 46 and fed to windings 47, 50 of relay 48 controlling the short-circuiting contacts 32. Since the original carrier is eliminated by the double modulation and replaced by the constant frequency, the working of relay 48 is independent of fluctuations of the carrier frequency. The use of the two filters 43, 51 and opposed windings 47, 50 eliminate the effect of residual noise. However, there may be produced a " pseudo-carrier " at the constant frequency due to noise currents modulating the output from 40 which then combine in the second modulator with corresponding noise currents from line 36 to produce the constant frequency. These elements in the two channels are made to neutralise each other by arranging for a progressive phase shift through the frequency band by means of filters 41, 44 so that corresponding frequency elements do not combine in like phase.
Patent GB-145688-A (GB)
Title: Improved pumping device
IPC: F04C3/04
Filed: 1920-06-30
Abstract: 145,688. Anderheggen, F. Oct. 26, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Movable-abutment type ; balancing moving parts.-A pump, motor, blower, &c. meter having a helical thread A rotating in a cylindrical chamber with an inlet I and outlet L adjacent the ends of the screw, and a sector C with teeth engaging the spaces between the helical thread, is provided with a duct or passage F connecting the opposite ends of the casing for the purpose of balancing end-thrust due to pressures of the fluid. A disk is fitted on the shaft. The sector wheel has rings H for " transforming pressure which would be normal into a radial pressure."
Patent GB-225899-A (GB)
Title: Improvements in or relating to thermionic valves or the like
IPC: H01J19/82
Filed: 1923-07-12
Abstract: 225,899. Lea, N., and Radio Communication Co., Ltd. July 12, 1923. V a c u u m tubes. - Resistance is incorporated in a valve or other discharge tube of such a value as to reduce the tendency to self-oscillation. One or more electrodes or their leads may be made of resistance material or a separate resistance may be mounted in the valve. As shown in Fig. 1, a resistance in the form of a wire R wound on a mica strip M is mounted within the neck and outside the vacuum, and is connected, in series with the grid G. In the arrangement shown in Fig. 3, the wire D is wound on a glass or silica rod M<1> secured by bent-over fingers f to parts P<1>, P<2> of the grid support to which the wire is connected; or a strip of insulating material wound with wire may be riveted to the parts of the supports. In anotherarrangement an insulating tube carrying the wire is mounted between the divided parts of three grid supports. In a further arrangement in which an electrode consists of rings or strips mounted on insulating supports, a separate resistance is connected between each ring and a common terminal. The resistance may be 100 ohms for a 500 watt tube, but may be as. low as 10 ohms or less.
Patent GB-425890-A (GB)
Title: Improvements in devices responsive to angular movement
IPC: G01C19/42
Filed: 1933-06-24
Abstract: 425,890. Gyroscopic apparatus. BENDIX AVIATION CORPORATION, 105, West Adams Street, Chicago, U.S.A. June 24, 1933, No. 18064. Convention date, June 25, 1932. [Class 97 (iii)] In a gyroscopic device in which the gyro precesses in response to angular movements of the supporting body, pneumatic means for opposing the precession and damping are connected to the gyroscopic element through cam mechanism. In the form shown, the rotor 12, driven by jet 37, is mounted on a transverse axis 14 in a ring 13 which pivots about a longitudinal axis 10, 11 and carries a plate 30. The centralizing and damping means consists of a piston 46 moving in a cylinder 43 and having an integral piston rod 47 terminating in a cam 51. A pin 49 engages a slot 48 in the rod 47 and guides the piston. The cylinder 43. communicates with the atmosphere through passage 45 so that the cam 51 is pressed down on a roller 52 mounted on a pin 31 fixed to the plate 30 when air is exhausted from the casing 6 through outlet 41. The cam 51 is shaped to cause a large displacement of the piston 46 for a comparatively small movement of the roller 52 due to precession. Since both piston 46 and driving jet 37 are operated in accordance with the pressure inside the casing 6, the precession resisting force is maintained proportional to the rotor speed. The arrangement also enables failure of the apparatus to be indicated by unrestrained fluctuations of the gyro. The sensitivity of the device may be varied by a valve screw 56 controlling a byepass 53, 54, 55 leading from the cylinder head to the casing 6. An indicating pointer 15 is fixed to a spindle 16 having a fork 34 actuated by an extension 33 of the pin 31. A curved glass tube 25 filled with damping liquid and enclosing a snugly fitting ball may be provided as a bank indicator.
Patent GB-458270-A (GB)
Title: Improvements in high speed cathode ray recording oscillographs
IPC: H01J29/46
Filed: 1935-06-24
Abstract: 458,270. Cathode-ray tubes. WHELPTON, R. V., 35, Brookside Road, Brooklands, Sale, Cheshire, and METROPOLITANVICKERS ELECTRICAL CO., Ltd., 1, Kingsway, London. June 24, 1935, No. 18104. [Class 39 (i)] In a high - speed cathode - ray oscillograph or the like, the electrons are supplied from a cold-cathode discharge tube 2, the axis of which is inclined to that of the main tubel, and a beam trap is provided and means for deflecting the electrons for the purpose of trapping the " retrograde rays," i.e. heavy ions and neutral atoms travelling with the electrons. The retrograde rays passing through the apertured anode 4 may strike the imperforate portion of an apertured plate 6 constituting the beam trap. The electron beam may be constrained to pass through the aperture 7 by a magnetic field. The trapping of the electron beam may then be performed by applying a deflecting potential to the beam trap plates 9 ; alternatively, the magnetic field may be caused to collapse, although the electrostatic action is more rapid. The magnetic field may be dispersed with and the beam trap plates used both for deflection and trapping. The method may be applied to high-speed oscillographic recording or electron microscopy.
Patent GB-421647-A (GB)
Title: Improvements in or relating to the edging of fabrics or other materials
IPC: B21D49/00
Filed: 1933-06-26
Abstract: 421,647. Making ornamental clips for leather &c. SUTTON, G. J., 14, Victoria Street, and KIEK, P. L., 1, Little Love Lane, Wood Street, both in London. June 26, 1933, Nos. 18158 and 25485. [Classes 83 (ii) and 83 (iv)] Angular bending; shearing &c.-In decorating &c. the edges of fabrics, leather, &c., M with clip-like metal, &c., edging elements c the clips are cut from a strip, bent and applied to the fabric automatically. A cross-head, reciprocated from a pulley through a pedal clutch, carries tools 111, 112, 113, 114 for blanking out the clip c, bending the ears, b bending the body of the clip at d and severing the waste, respectively. After the blank is severed it is reinserted into the hole in the strip for feeding. The strip is fed by geared rollers 42, intermittently rotated by a roller wedge clutch 45 adjusted in stroke by a screw 49 and rendered inoperative by manipulation of a lever 54. The clips are slid off the die 113 by a pusher reciprocated from the crosshead and are fed by a pusher 67 over a notch 126, Fig. 14, which swings the clip 90 degrees to straddle the material. The clip is positioned by stops 131, 132 and is closed on the material by pincer-like tools T actuated by a screw on the crosshead. Hammers actuated from the crosshead may be used for flattening the material. In a modification lengths of the strip are cut off to form the clip.
Patent GB-477462-A (GB)
Title: Improvements in or relating to metallic electric conductors sealed through quartz
IPC: C03C27/04
Filed: 1936-06-30
Abstract: 477,462. Sealing leading-in conductors into quartz. GENERAL ELECTRIC CO., Ltd., HARRIS, N. L., and RYDE, J. W. June 30, 1936, No. 18174. [Class 36] In a process of sealing through quartz a leading-in conductor consisting of a strip of an oxidizable refractory metal not more than 20Á thick, the strip is coated, before sealing, with a layer of a refractory non-oxidizable metal such as rhodium, the thickness of this layer being much less than that of the strip, and a quartz tube is collapsed on to the strip by means of heat applied externally without the complete evacuation of oxidizing gas, such as air, from the space between the tube and strip. The non-oxidizing layer is preferably formed upon the strip by the known process of distillation, by placing a clean strip in a vacuum adjacent to a tungsten helix enclosing a bead of rhodium and heating the tungsten by passing current therethrough until the rhodium evaporates and is deposited on the strip. Alternatively, the thin layer may be formed by the known process of cathodic sputtering, or by electroplating. In an example using a molybdenum strip 10Á thick, a layer of rhodium 0À75Á thick is provided. In sealing the strip within the tube, although complete removal of the air is not necessary, a partial removal aids the collapse of the tube by the external pressure. Alternatively mechanically applied pressure may be used alone in collapsing the tube. Specification 396,103, [Group XI], is referred to.
Patent GB-1406521-A (GB)
Title: Method of feeding separated fibres into a rotary open-end spinning  chamber for forming  a yarn and an open-end spinning device
IPC: D01H4/30
Filed: 1973-04-16
Abstract: 1406521 Open end spinning: feeding fibres TSENTRALNY NAUCHNO-ISSLEDOVATELSKY INSTITUT KHLOPCHATOBUMAZHNOI PROMYSHLENNOSTI 16 April 1973 18210/73 Headings DID and DIN An air flow carrying separated fibres is fed tangentially into and helically along a duct to flow into a rotating, open end spinning chamber as an annular flow rotating in the same direction as the chamber. As shown, Fig 3, a fibre-carrying air flow is fed tangentially through port 3 into duct 2 to flow as annular flow 5 into rotating chamber 6 coaxial with the duct. The angular speed of the annular flow may be less than the angular speed of the chamber. The twisted yarn may be withdrawn through a tube within and coaxial of the duct. The duct may have any of the shapes shown in Fig 3, or may continuously taper towards its outlet. The fibre separating means may comprise a roller drafting device having several drafting stages, or a carding roller fed by drafting rollers. Alternatively, Fig 7, port 3 connects directly with chamber 23 containing carding roller 22. The air flow within chamber 23 is rotated within chamber recess 25 to urge the fibres against roller 22. The fibres are metered between roller 26 and spring biased plate 28.
Patent GB-748545-A (GB)
Title: Impact and vibration damping device, the damping effect of which is practically independent of its temperature
IPC: F16F7/02
Filed: 1952-07-18
Abstract: 748,545. Rotary dashpots; friction dampers. SINISTERRA, F. July 18, 1952 [Aug. 10, 1951], No. 18259/54. Class 108 (3). In a damper in which energy is dissipated by shear work in a mass of bouncing putty or other damping medium having a viscosity of the order of 300,000 poises at 20‹ C., a number of complementary means are provided for automatically compensating for variations in damper resistance due to variations in the surrounding temperature. In Fig. 2, a rotor 18 operates in a housing 2 and carries rings 20 and friction rings 21. Ducts 23 provide for passage of the damping medium to the lower face of the rotor. At normal temperatures the rings 20 remain free on the rotor 18. At higher temperatures, the increased pressure of the damping medium and consequent upthrust on the rotor, tends through the action of the friction rings, to lock the rings 20 to the rotor. This increases the effective surface-area of the rotor. In Fig. 3, the rotor 1 is flanked by friction rings 26, 28. A rubber ring 25 bears on the upper friction ring 26. In Fig. 4, an expansible ring 29 in keyed engagement with the casing at 30, is split at 31, and its ends bear upon an ellipticalshaped resilient member 32. The latter bears on a resilient ring 33. Expansion of the ring 29 causes an increase in length of the minor axis of the member 32. This results in contraction of the ring 33 with a consequent reduction in thickness of the working layer of damping medium. The member 32 may be replaced by a leaf-spring. The rings 29 and 33, and the member 32, may be formed in segments, and there may be more than one member 32. In a further construction (Fig. 1, not shown), the space between the working surfaces of the rotor and casing are connected with a hollow space within the rotor. A rubber block or ball is disposed in the rotor space. The rubber block expands on an increase in temperature of the working medium. This results in an increase in pressure of the working medium. A pair of relatively axially slidable rings in mutual toothed engagement, are outwardly spring. urged into engagement with respective friction rings. One friction ring bears on an outer endsurface of the casing, and the other bears on an opposed annular surface carried on the operating arm of the rotor. In a yet further construction (Fig. 5, not shown), a plurality of balls are disposed in an annular space between the easing and the rotor. A temperature rise causes an increase in size of the balls and consequent increase in pressure of the working medium. Some of the balls may be disposed in annular tracks on the rotor and may serve to position the rotor in spaced relation to the casing. The damping medium is preferably a bouncing putty incorporating silicones. Specifications 605,218, [Group IV (a)], 615,083, 709,301, 711,430 and U.S.A. Specification 2,541,851 are referred to. Reference has been directed by the Comptroller to Specifications 709,301 and 711,430.
Patent GB-204152-A (GB)
Title: Improvements in or relating to devices for suspending garments
IPC: A47B61/02
Filed: 1922-07-04
Abstract: 204,152. Edwards, I. A. E. July 4, 1922. Garment racks.-A rail for suspending garments in a wardrobe &c. comprises an outer tube 4 secured at one end to a wall bracket 1 and supported at the other end by a depending bracket 5 shaped, as shown in Fig. 4, to permit hooks &c. to slide freely along the tube. An inner tube 7 slides within the tube 4, means being provided to limit the extension of the rail. In a modification shown in Fig. 8, the outer tube 4 is hinged to the wall bracket 1, the depending bracket 5 being adapted to slide on a curved guiding-rail 15 secured to the wardrobe &c. top, which guide-rail may be replaced by two spaced brackets similar to 5 upon which the tube 4 may rest.
Patent GB-653671-A (GB)
Title: Improvements in and relating to electric fuse elements
Inventor: ASTBURY AYLMER RIGG
IPC: H01H85/055
Filed: 1948-07-08
Abstract: 653,671. Fusible cut-outs. DORMAN & SMITH, Ltd. July 8, 1948, No. 18363. [Class 38 (i)] In a fuse element of the kind comprising a strip of high-melting-point metal having a piece of lowmelting-point metal secured thereto, the piece of low-melting-point metal comprises a plug 7, Fig. 1, inserted in a hole in the element and its ends cold-riveted over. Two or more elements as in Fig. 1 may be joined together by the plug 1 and inserted in a cartridge 14, Fig. 3, the ends being separated and clamped between end caps 15, 16.
Patent GB-421450-A (GB)
Title: Improvements in or relating to mechanism for winding bobbins, spools, cops and the like of yarn and thread
IPC: B65H54/28
Filed: 1934-06-21
Abstract: 421,450. Winding - machines. MASCHINENFABRIK SCHWEITER AKT.-GES., Horgen, near Zurich, Switzerland. June 21, 1934, No. 18404. Convention date, June 27, 1933. [Class 120 (ii)] A yarn-winding machine having a traversing drum with crossed helical grooves, is provided with an auxiliary guide over which the yarn is fed to the drum, comprising a member rotating on a shaft parallel to the drum shaft, and having two guide surfaces placed at 180‹ to each other and inclined with respect to the shaft, so that the yarn is caused to slide to and fro as the guide rotates. The auxiliary guide may be detachably mounted so that one of shorter length may be substituted, or its rate of rotation with respect to the drum may be changed, so that reversal of the yarn can be effected at any selected point of intersection of the drum grooves, whereby different length packages can be wound with the same drum. The yarn 13 passes over the auxiliary guide 7, rotated by gearing 10 from the shaft 3 carrying the drum 4. The guide 7 may consist of two wires as shown ; or two triangular blades; or a flattened cylinder 7, Figs. 10 and 11 ; or a cylinder 7, Figs. 12 and 13 having two helical channels c oppositely directed, each extending through 180‹.
Patent GB-497974-A (GB)
Title: Improvements in or relating to record-card-controlled multiplying machines
IPC: G06F7/46
Filed: 1937-07-02
Abstract: 497,974. Statistical apparatus. BRITISH TABULATING MACHINE CO., Ltd. July 2, 1937, No. 18466. Convention date, July 3, 1936. [Class 106 (i)] A record-card-controlled multiplying machine of the type wherein the factors are derived from a card, the factors are multiplied to obtain the product, and the product is recorded by punching on the card is provided with means for checking the results of the previous computations. The invention is shown as applied to a machine of the kind described in Specification 405,031. The machine comprises multiplicand and multiplier registers MC and MP, Fig. 1, right- and left-hand accumulators RH and LH, an accumulator SP for use in summing products, an additional accumulator LHA, impulse emitters 45, 49, 62, and a distributer 21, cam contacts CC, and the usual card feed mechanism and contacts (not shown), the usual punching mechanism and cycle control and relay sections (not shown). The machine operates in the known manner for normal multiplication but when set for checking purposes the cyclic operations are altered. For this purpose a shift lever is manipulated to reverse a set of checking contacts and to reverse the entry relations of the multiplicand and multiplier. During the first machine cycle the factors are read from the card and entered into the MP and MC registers and the product from the card is entered into the accumulator SP. On the next machine cycle the complement of the product standing on the accumulator SP is read out and entered into the accumulator LH. Multiplying operations then ensue, the partial products being entered into the accumulators RH, LH in the usual manner. Transfer from the accumulator RH to LH is then effected. The circuit arrangements ensure the entry of the re-calculated product into the accumulator LHA. If the product read from the card agrees with the re-calculated product the accumulator will stand at zero and a further card feed cycle is initiated. If the products do not agree the initiating circuit is not completed and the card feed is suspended. The card can be removed by hand and the punched product compared with the amount in accumulator LHA. To start the machine the operator depresses a key to effect the resetting of the accumulator LH and the card feed operation. If the check agrees a hole may be punched in the X position and the card is ejected immediately and the punching operation is suppressed. As compared with prior checking arrangements the present arrangement dispenses with a subtracting cycle and a reset cycle for the accumulator LH. Specifications 426,405, [Group VIII], and 428,793 also are referred to.
Patent GB-728919-A (GB)
Title: Improvements in the preparation of silicon tetrachloride
IPC: C01B33/08
Filed: 1952-07-22
Abstract: Silicon tetrachloride is prepared by passing chlorine over silicon or an alloy thereof at temperatures not higher than 150 DEG  C. in the presence of a catalyst comprising one or more "activated metals" selected from the group consisting of cobalt, copper, nickel, chromium, manganese, iron, silver, titanium, tin, antimony, vanadium and molybdenum.  The "activated metals" are produced (i) by reduction of the oxides, hydroxides or nitrates with hydrogen or ammonia, (ii) by decomposing an organic salt such as the oxalate or formate of the metal in an inert or reducing atmosphere, (iii) by reduction of the metal chloride with silicon, (iv) by precipitation from a metal salt solution by the action of another metal such as zinc, cadmium or manganese, or (v) by selective attack of an alloy of the metal, such as the caustic soda attack on a cobalt-tin, cobalt-aluminium or cobalt-silicon alloy.  According to examples (i) cobalt chloride was mixed with silicon in a proportion of 1 : 10 by weight and reacted at 460 DEG  C. to produce cobalt and silicon tetrachloride.  Chlorine was passed over the resultant mixture of silicon and the cobalt catalyst at 136 DEG  C., temperature control being effected by cooling or adding an inert gas.  The activity of the cobalt catalyst was restored by discontinuing the chlorine supply and heating the silicon cobalt mass to which further silicon may be added, to at least 380 DEG  C.; (ii) cobalt hydroxide was reduced with hydrogen at 560 DEG  C., optionally in the presence of silicon.  The resulting mass, with added silicon, was treated with chlorine at 150 DEG  C. after initiation at 230 DEG  C.; (iii) copper carbonate was slowly dissolved in concentrated ammonia solution which was then mixed with ferrosilicon and diatomaceous earth.  After evaporation of water, the dry cake was packed into a reaction chamber and reduced with hydrogen at 200 DEG  C.  The resulting mass was then reacted with chlorine at ordinary temperatures.  Further examples refer to copper and mixed cobalt-manganese catalysts.  Specifications 141,908 and 176,811, [both in Class 1 (ii)], are referred to.