baber/WOPTO huggingface dataset:
Patent GB-741043-A (GB)
Title: Pressure measuring and recording instrument
IPC: G01L23/02
Filed: 1951-08-21
Abstract: 741,043. Pressure gauges; recording apparatus. SCHLAICH, H. Aug. 21, 1951 [Nov. 25, 1950], No. 19694/51. Classes 106 (2) and 106 (4). A gauge for testing the compression attainable in internal-combustion engines, includes a removable record member or tablet having scales on one face and grooves or slots on its other face, pressure operated marking means engaging the tablet, and means co-operating with the grooves or slots for effecting a step-bystep movement of the record member with respect to the marking means such that the compression pressures of all the cylinders of an engine may be marked in graphical form on a single record member. In Fig. 2, a pistonoperated stem 3 displaces a pointer 7 about a pivot 6. At the end of the pointer 7 is a bushing 12 supporting a stylus adapted to bear against a recording surface. The surface may be a sheet 20, Fig. 4, mounted on a removable tablet or slide 13, Fig. 3, in the pressure gauge. Alternatively, the slide 13 may be the recording surface. The recording surface is divided by vertical lines representing a pressure scale and by marks along one such vertical line so arranged that on displacing the slide 13 at the commencement of each pressure gauging operation, the trace swept out by the stylus commences from a fresh mark. The slide 13 may be displaced by moving a handle 37, Fig. 1, in the direction of the arrow, this handle being coupled by spring means 33 with notches 17 in the slide 13. When the slide is so displaced it is retained in its displaced position by a check spring 18 also acting on the notches 17 whilst the spring 33 and handle 37 are returned to their initial position by a spring 34, Fig. 2. For testing a multi-cylinder engine, a sparking plug is removed and the pressure gauge is applied to the resulting hole via a resilient cone-shaped member 28 containing a one-way valve. The resulting air trapped in the gauge during a test may be released when desired by manually opening said valve. Alternatively, the gauge may be adapted to be screwed into the sparking plug hole. Assuming that the first cylinder to be tested has a compression of 5 atmospheres, then the pointer 7 and its stylus will draw a line from the numeral 1 of the vertical marks to the vertical line numbered 5. After this test the slide 13 is moved upwardly in the gauge, by means of the handle 37, until the check spring 18 engages in the next groove 17. The stylus on the pointer 7 now stands at the numeral 2 on the vertical scale and the second cylinder may now be tested.
Patent GB-1491871-A (GB)
Title: Lock nuts
IPC: F16B37/00
Filed: 1974-05-04
Abstract: 1491871 Locking nuts RUBERY OWEN FASTENERS Ltd 5 May 1975 [4 May 1974] 19704/74 Heading F2H A lock nut for securing a vehicle wheel comprises a body 1 with a coaxial tapered seating portion 2 at one end to co-operate with a recessed seating surrounding a bolt hole in the nave of a wheel, and a threaded bore 3 extending axially through the nut and having an annular grooved portion 4 in the region of the seating portion 2 to reduce the stiffness of the seating portion relative to the main body of the nut. This allows the nut to accommodate manufacturing variations in the nave and the nut, and also makes the nut self-locking. The annular groove 4 may have a V cross-section with a rounded apex, or be part circular or rectangular in cross-section. The nut may also have a nylon locking ring (6) in an annular groove (7) in the threaded bore (Fig. 2, not shown).
Patent GB-782772-A (GB)
Title: A deflection circuit for repetitively sweeping the beam of a cathode ray tube
IPC: G01R13/28
Filed: 1955-07-07
Abstract: 782,772. Electron beam deflecting apparatus. BENDIX AVIATION CORPORATION. July 7, 1955 [Aug. 27, 1954], No. 19728/55. Class 39(1). [Also in Group XL(c)] A system for switching a C.R.T. sweep repetitively between two positions in order to present simultaneously two displays, comprises a deflection coil 1 coupled to a sawtooth sweep circuit by a transformer 5 and in series with a floating D.C. source Bi and a switching discharge tube 6. The current passing is determined by the bias on tube 6. The bias is supplied by way of potentiometer 11, 12, 13 and is controlled by a tube 8. A switching voltage Es alternates tube 8 between a conducting condition and a cut-off condition. In each condition a different range of bias voltages is possible for tube 6. The bias magnitudes and hence the displacement between the two sweeps is controlled by the tapping on potentiometer 11, 12, 13. A resistance 14 limits the grid current to tube 6 if bias of zero volts is required. Chokes 3, 4 isolate the shunting effect of the low impedance of source B 1  from the deflection coil 1. Damping resistors 15, 16 reduce transients.
Patent GB-147750-A (GB)
Title: Improvements in or relating to valve mechanism of internal combustion engines
IPC: F02B75/02
Filed: 1920-07-08
Abstract: 147,750. Liebra Motoren Ges. Dec. 4, 1918, [Convention date]. Valves; valve-gear.- In a swash-plate engine with two sets of cylinders such as 7 arranged around and parallel to '.he shaft 2, the distribution is controlled by a rotary sleeve valve 9 in each cylinder and a rotary inlet and exhaust-valve 21 mounted on the shaft 2 for each set of cylinders. Each sleeve valve 8 has two opposite ports 9, 10 co- (perating with a port 29 in the cylinder serving both for inlet and exhaust and with an auxiliary exhaust port 32 which is opened before the main exhaust and remains open during part of the exhaust stroke. A ported cylinder head 11 projects within the sleeve, and the internal pressures on the sleeve at the ports 34, 33 in the cylinder head are balanced by providing a dummy port 36 in the cylinder head. The sleeve valves are driven from the shaft 2 through gearing 18, 19, 20, countershaft 17, and gearing 16, 15, 14, 13. In a four-stroke-cycle engine, the sleeve valves rotate at one-fourth the speed of the valve 21. The arrangement is such that the more rapidly moving valve 21 effects the closing and opening of the port 29 at the end of the exhaust stroke and the beginning of the suction stroke, and also the closing of the port 29 at the end of the suction stroke.
Patent GB-224276-A (GB)
Title: Improvements in or relating to machines for spinning and doubling yarns
IPC: D01H7/04
Filed: 1923-08-02
Abstract: 224,276. Ferrand, F. Aug. 2, 1923. Spring supports. - A spinning or doubling spindle controlled by the centrifugal action of balls, as described in Specification 207,568, [Class 120 (ii), Spinning, twisting, &c.], is mounted in a sleeve which is mounted in a bolster and supported at or near its upper end so as to be capable of limited rocking movement. The spindle 6, Fig. 1, on which is fixed the ballcarrying disc 7, is mounted in a sleeve 8 which is mounted in a bolster 9 fixed in the spindle. rail 10. The sleeve 8 is provided at its lower end with a bearing 11 for the end of the spindle and a number of blade springs 13, and is formed at or near its upper end with a part spherical bearing surface 12 which seats in a complimentary recess in the bolster 9. The springs 13 normally maintain the sleeve 8 coaxial in the bolster but permit it to rock on its bearing surface 12 in any direction to allow the spindle 6 to accommodate itself to the winding of the yarn. The springs 13 may, if desired, be dispensed with. In a modification, the sleeve 8, Fig. 2, is provided with projections 14 which take into corresponding notches 15 in' the bolster 9, and on which the sleeve 8 may rock. Springs 13 may be provided as in Fig. 1.
Patent GB-1495677-A (GB)
Title: Apparatus for producing selective magnetisation of discrete areas or members
IPC: H01F13/00
Filed: 1975-05-12
Abstract: 1495677 Magnetization; electromagnets ELEKTRO - PHYSIK HANS NIX & DR INGE STEIMGROEVER KG 12 May 1975 [12 June 1974] 19909/75 Heading H1P A plate 4 of high remanance magnetizable material is supported with its surface 3 under a soft iron pole support 1 in which are vertically slidable iron pole rods 2 spaced apart in coordinate directions; the pole support being surrounded by a winding 5. The plate 4 may be of barium-strontium powder admixed with a plastics material. Thepole rodsmay have flanged key tops and be movable selectively against return springs to contact the plate, after which the winding is pulsed from a capacitor chargeable from A.C. supply over a transformer and rectifier (Fig. 3, not shown) to generate north poles at selected locations 6 of plate 4 (Fig. 2) adjacent to weaker south poles, the selected magnetizations serving for coded storage of information. Alternatively the device may selectively magnetize discrete magnetizable members inset in an, e.g. plastics nonmagnetic plate (Fig. 4, not shown). Alternatively premagnetized information carriers may be selectively premagnetized, and the magnetized surface may be curved to correspond with the profiles of the poles. The pole rods may be selectively operated manually or from a keyboard and the plate to be selectively magnetized may be backed by a low reluctance ferromagnetic plate. The pole rods may be of rectangular or sectoral cross-section, and the pole support may be of low reluctance ferromagnetic material.
Patent GB-951085-A (GB)
Title: Improvements in or relating to protective circuit arrangements for electric breakdown devices and the like
IPC: H02H7/127
Filed: 1960-06-07
Abstract: 951,085. Protective arrangements. INTRON INTERNATIONAL Inc. June 7, 1960 [Aug. 19, 1959], No. 19918/60. Heading H2H. A circuit arrangement wherein a load 7 is supplied from a supply 1 by way of switching transistors 3, 4-or other electronic deviceswhich are rendered conductive alternately, has a reactance bridge 10 connected between the switching devices 3, 4 and the load 7 in order that the switching devices may be protected against excessive current or voltage should the load 7 become either short circuited or open circuited. The bridge 10 comprises inductors and capacitors in alternate arms thereof, the values of the inductors and capacitors being such that parallel resonance occurs when the load 7 is short circuited, but when the load is open circuited the bridge forms two detuned series circuits across the output of the transformer 5. The means for rendering the transistors 3, 4 conducting alternately comprises an alternating current source 8 or alternatively it may comprise a feedback arrangement from the load.
Patent GB-1406755-A (GB)
Title: Latch mechanism for a vehicle passive restraint system
IPC: B60R21/02
Filed: 1973-04-27
Abstract: 1406755 Releasable fastenings LUCAS ELECTRICAL CO LTD 26 March 1974 [27 April 1973] 20022/73 Heading E2A [Also in Division B7] A pivoted padded arm 12 of the system is normally unlatched from its inoperative position by the action of a solenoid 17. However, if the arm is biased towards its operative position, e.g. by a mounting invalid, then release by the solenoid is prevented until the bias is removed. The arm 12 is held in its inoperative position by the action of a latching lever 18 on a peg 24. A further lever 19 has a common pivot with the lever 18 and has a conducting strip on its upper surface which, when the peg 24 is in its normal inoperative position, bridges contacts 26 and 27 which are in series with the solenoid 17. If a load tends to move the arm 12 towards its operative position the levers 18 and 19 are moved bodily a short distance against a bias, so that the contents 26 and 27 are no longer bridged and the solenoid cannot be energised to unlatch the arm. Mowever, in the normal course of events, the contacts 26 and 27 will remain bridged and energisation of the solenoid 17, for example by operation of the vehicle ignition switch, will move the lever 18 to release the restraint arm 12. When the arm 12 has moved away from its inoperative postion, the lever 19 is free to pivot away from contacts 26 and 27 so that the solenoid circuit is broken and the solenoid de-energised. If, in otherwise normal operation, the restraint arm 12 is prevented, on unlatching, from moving away from its inoperative position, then the lever 19 remains in its illustrated position bridging the contacts 26 and 27. This allows the lever 18 to be moved by the solenoid 17 to a point where the contacts 26 and 27 are lifted from the lever 19 so breaking the solenoid circuit. The lever 18 therefore returns towards its illustrated position thus allowing the contacts 26 and 27 to be bridged and the cycle to be repeated with the result that the lever 18 oscillates and produces an audible warning to the occupants that something is amiss. In a modification, Fig 2 (not shown), the contacts 26 and 27 are not bridged by the lever 19 but are mounted on spring blades and are flexed into contact with each other by the lever 19.
Patent GB-984444-A (GB)
Title: Process for the manufacture of a vaccine containing a live foot-and-mouth disease virus
IPC: A61K39/135
Filed: 1961-06-02
Abstract: A foot-and-mouth disease vaccine containing a live virus is prepared by subjecting a virulent foot-and-mouth disease virus to serial passage in primary cell cultures consisting of Hanks solution and primary cells obtained by the trypsinization of an organ of a cloven-hoofed animal, at 20 DEG  to 37 DEG  C., until the viruses are so modified that they still multiply when intramuscularly injected into a cloven hoofed animal but do not provoke a clinically detectable illness.  The primary cells may be obtained from the kidneys, testicles or ovaries of cattle, pigs, sheep and goats.  A cattle vaccine may be prepared from a virus having undergone from 370 to 500 serial passages.  For a pig vaccine, the virus should have undergone at least 550 serial passages.  Prior to processing into a live vaccine with an injectable adjuvant such as aluminium hydroxide, the attenuated viruses may be stored in a nutrient medium for 8 days to a year but preferably six months at a temperature of +10 DEG  C. to -40 DEG  C., preferably at -20 DEG  C.
Patent GB-654658-A (GB)
Title: Improvements in or relating to gyroscopic apparatus for use in steering a great-circle track
IPC: G01C21/16
Filed: 1947-07-25
Abstract: 654,658. Course indicators. SPERRY GYROSCOPE CO., Inc. July 25, 1947, No. 20098. Convention date, Jan. 6, 1944. [Class 40 (i)] [Also in Group XX] In a great-circle courseindicator, to compensate for the local vertical component of the earth's spin, a correction proportional to the sine of the latitude is added to the indication of a gyro. The initial position on the great circle, and the speed of the craft are set on a device comprising two series-connected Selsyns, and the correction signal obtained therefrom is (a) fed to a torquemotor tending to precess a levelled directional gyro, or (b) as in the Specification as open to inspection under Sect. 91, it is caused to drive one element of a Selsyn, forming an electrical differential, and having its other element driven by a slaved-directional-gyro, said differential output being connected to a Selsyn indicator. The rotor of the first Selsyn 23, Fig. 4, is set at an angle corresponding to the inclination X of the great-circle-course to the equator, Fig. 3. The rotor of the second Selsyn 27 is set to correspond to the angular distance Yo of the origin of the course along the great-circle, and is rotated during the passage according to the ground-speed of the craft by means such as a constant speed motor 33 and variable speed drive 31, 32, 34. This control may be effected automatically by a ground-speed measuring instrument, and may alternatively comprise a variable frequency-oscillator feeding a clock motor. The Selsyn output in the first embodiment supplies a torque motor 19, tending to precess the horizontally spinning gyro 18 about the vertical axis. The gyro is maintained horizontal in the conventional way by a levelling switch 43 mounted thereon and controlling a torque motor 42 which causes the gyro to precess vertically. The "heading" of the gyro which will be the great-circle-course, is indicated on a card 12 driven through bevel gears 15, 16 or may be fed to an automatic pilot from the Selsyn 38. In the Specification as open to inspection under Sect. 91 the course indicator may be a Selsyn receiver 50 fed from a Selsyn transmitter 54 having the position of its rotor controlled by a directional gyro, slaved to a magnetic or gyro compass, Fig. 5 (Cancelled), and the position of its "stator" controlled through a servomotor system by the correction signal. The servomotor system comprises a differential 56 having two input shafts driven in opposite directions by repulsion motors 57, 58 energized from the supply, through transformer 59, symmetrically with respect to the correction signal, which is obtained as before from Selsyns 23, 29, whereby the differential output shaft 55 and hence the "stator" of Selsyn 54 moves in accordance with the correction signal. This subject-matter does not appear in the Specification as accepted.
Patent GB-708134-A (GB)
Title: Improvements in or relating to magnetic bodies comprising a highly-permeable part and a thin permanent magnet
IPC: H01F1/03
Filed: 1951-08-27
Abstract: 708,134. Electron lenses. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 27, 1951 [April 23, 1951], No. 20139/51. Addition to 708,132. Class 39(1) [Also in Group XXXV] An electron lens made in accordance with the invention of the parent Specification comprises a coil 19 surrounded by a highly permeable core 14, 15, 18 in which, lying in the plane of the core limb is a permanent magnet insert 4. This is of material having a non-cubic crystal structure, and a coercivity of at least 750 Oersted, e.g. the material forming the subject of Specification 708,127, [Group XXXV], and is magnetized across its thickness. To effect a fine adjustment of the lens the current through coil 19 is varied and to effect a coarse adjustment part 18 of the core is moved relative to the permanent magnet and the rest of the core. The application of the invention to inductors is described (see Group XXXV). Specifications 708,132, 708,133 and 708,135 also are referred to.
Patent GB-914986-A (GB)
Title: Improvements in flexible shaft coupling
IPC: F16D3/74
Filed: 1960-06-08
Abstract: 914,986. Universal joints. CESKOSLOVENSKE ZAVODY NAFTOVYCH MOTORU PRAHA NARODNI PODNIK. June 8, 1960 [June 26, 1959], No. 20187/60. Class 80 (2). A flexible coupling comprises a resilient inwardly open annular member 6 with its edges bonded to the flanges 1, 2 of the driving and driven shafts 3, 4, respectively, thereby forming a pressure-tight chamber 8 which is filled with compressed gas, such as air, through a non- return valve 10. In the form shown in Fig. 3 the member 6 is provided with a metal cover 12 provided with outer cooling ribs and inner flanges bearing against the outer surface of the member 6, the rubbing surfaces being formed of " Silon " (Registered Trade Mark) to reduce friction.
Patent GB-459310-A (GB)
Title: Improvements in the purification of tricresyl phosphate used for the extraction of phenols
IPC: C07F9/12
Filed: 1935-07-15
Abstract: Tricresyl phosphate used for the extraction of phenols is purified by removing the substances of high molecular weight remaining after the phenols have been expelled, by treating the tricresyl phosphate with concentrated or fuming sulphuric acid and isolating the precipitated substances.  The removal of the precipitated substances may be facilitated by the addition of solvents, e.g. carbon disulphide or carbon tetrachloride, or by combining the excess acid with neutralizing agents, e.g. alkaline-earth metal hydroxides or carbonates, or absorption agents, e.g. Florida earth, or both.  The amount of sulphuric acid, which may be 95 or 100 per cent or of up to 80 per cent sulphur dioxide content, is usually 0,5--5 per cent by volume of the tricresyl phosphate, and the amount of solvent, when used, from half to an equal volume.  In examples, tricresyl phosphate is treated with: (1) 20 per cent oleum; (2) 20 per cent oleum in the presence of carbon disulphide; (3) 96 per cent sulphuric acid in the presence of carbon tetrachloride; (4) and (5) 20 per cent oleum, the excess of which is neutralized with calcium carbonate.
Patent GB-765706-A (GB)
Title: Improvements in or relating to stools and the like
Inventor: LARHAM DAVID PERCIVAL
IPC: A47C9/00
Filed: 1954-07-09
Abstract: 765,706. Stools &c. NU-PARQ PRODUCTS, Ltd. June .16, 1955 [July 9, 1954], No. 20191/54. Classes 52 (1) and 52 (2). In a stool &c. the legs 1 pass through resilient e.g. rubber bushings 16 secured in apertures formed in upper and lower frames 7, 10 so that the legs can move angularly a slight distance relative to the seat 20.
Patent GB-625492-A (GB)
Title: Improvements in and connected with magnetic snap action switches
IPC: H01H5/02
Filed: 1947-07-26
Abstract: 625,492. Partly magnetic switches. FLIGHT, T. N., WILSON, W. H., and CHINN, A. J. July 26, 1947, No. 20199. [Class 38(v)] In a magnetic snap action switch an operating member 16 which may move under the influence of.changing tempera ture or pressure bears against a spring blade 13 which carries two armatures 11, 12, arranged on opposite sides of a magnet-14. The blade 13 also carries a contact 17 co-operating with a fixed contact 18 and an adjustable stop 19 limits the gap at "break" to "micro" proportions. The disposition of armatures and magnet is such as to produce a magnetic bias always in the one direction. For example, if both armatures are of the same size and of similar material the arrangement will be such that for all positions of the switch one armature such as 11 is nearer the magnet than the other.
Patent GB-625387-A (GB)
Title: Improvements relating to frequency relays for alternating currents
IPC: H01H51/32
Filed: 1947-07-28
Abstract: 625,387. Electromagnetic relays. SPENCER, A., and GOOD, G. July 28, 1947, No. 20240. [Class 38(v)] A frequency relay comprises a series of reeds a tuned to slightly different frequencies and responsive to A.C. in an electromagnet f. One of the reeds is tuned to the standard frequency of the supply and this reed has an upturned end h. The other reeds are tuned to other frequencies and have downturned ends i adapted to dip into one or more mercury troughs j. Thus, when the frequency diverges from the standard, one of the ends i will dip into the mercury and complete a circuit between leads k, d, lead d being connected to a bar b which carries all the reeds. Thus a relay may be operated to control apparatus to correct the frequency or to bring in an auxiliary supply of correct frequency.
Patent GB-995231-A (GB)
Title: Improvements in or relating to casting
Inventor: HORTON ROBERT ANDREW
IPC: B22C3/00
Filed: 1964-05-15
Abstract: 995,231. Casting processes. PRECISION METALSMITHS Inc. May 15, 1964, No. 20354/64. Heading B3F. A process of investment casting comprises the steps of forming a refractory mould which has a pattern cavity, externally coating the mould with a combustible deoxidizing agent, the surfaces of the mould cavity being free of the deoxidizing agent, and firing the mould in a reducing atmosphere ready for the casting operation. When the casting takes place the deoxidizing agent on the mould surface burns and produces a reducing atmosphere which protects the metal in the mould as it solidifies. The deoxidizing agent is graphite.
Patent GB-242952-A (GB)
Title: An improved waterproof cover for hats of any kind
IPC: A42B1/18
Filed: 1925-08-14
Abstract: 242,952. Berton, L. Nov. 13, 1924, [Convention date]. Void [Fublished under Sect. 91 of the Act]. Covers and protectors.-A waterproof hat cover a<1> comprises several portions stuck or sewn together to completely envelope the crown and brim and normally retained in position by elastic bands or similar means b, d respectively. The cover may be of thin gutta-percha or rubber covered silk.