baber/WOPTO huggingface dataset:
Patent GB-733590-A (GB)
Title: Improved change speed and/or change direction power transmission gear incorporating a pinion containing a friction clutch
IPC: F16D25/064
Filed: 1953-03-25
Abstract: 733,590. Friction clutches. HINDMARCH, T. Nov. 11, 1953 [March 25, 1953],No. 8204/53. Class 80 (2). A friction clutch has axially slidable annularly grooved members 7, 8 engageable with axially fixed members 1, 2, which are mounted in a surrounding casing 14 by bearings 12, 13. As shown, the members 1, 2 are parts of a gear wheel 3 and the clutch is engaged by admitting fluid pressure between the members 7, 8. Such a gear 3 may be used in change speed or reversing gearing. Specification 654,652 is referred to.
Patent GB-635002-A (GB)
Title: Improvements in magneto-electric machines
IPC: H02K21/02
Filed: 1947-03-26
Abstract: 635,002. Machines with permanent magnets. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 26, 1947, No. 8235. Convention date, June 29, 1944. Drawings to Specification. [Class 35] To reduce the effects on the magnet of shortcircuiting of the winding of a motor or generator having a permanent magnet stator or rotor, the magnet is first magnetized to saturation and is then partially demagnetized. The theoretical basis for determining the extent of the demagnetization is given in the description.
Patent GB-590923-A (GB)
Title: Improvements in or relating to building blocks and the like
IPC: E04B2/02
Filed: 1945-04-04
Abstract: 590,923. Building blocks. BEANLAND, F. D. April 4, 1945, No. 8261. [Class 87 (i)] Interlocking building blocks are provided on each of two opposite edges with a tongue 12 and groove 11 shaped to leave spaces 16 when adjacent blocks are engaged. Semi-circular or rectangular grooves 13 may also be provided. In a modification, the tongues 12 are semi-circular and the grooves 11 are truncated. In a further modification the tongues and grooves on adjacent blocks are different but complementary.
Patent GB-638125-A (GB)
Title: Improvements in or relating to feed mechanism for tunnel furnaces
IPC: C21D9/00
Filed: 1948-03-20
Abstract: 638,125. Charging tunnel furnaces. STEAD & CO., Ltd., J., and WARD, R. March 20, 1948, No. 8319. [Class 51 (ii)] [Also in Group XXX] Charging mechanism for feeding loose articles continuously to a succession of trays passing through a tunnel furnace comprises a vibratory shoot adapted to be fed continuously and to discharge the articles in one direction with respect to the surface of each of the successive trays, and a deflector adapted to intercept the articles between the shoot and the trays and to distribute them over the area provided by the trays. The apparatus shown is arranged for feeding a conveyor 1 of the form described in Specification 638,126 and comprises a hopper 6 communicating with a smaller hopper 8 from which the articles are fed by a vibratory tray 10 on to a vibratory shoot 12 having its discharge end 14 positioned above a deflector 18 which consists of a vertical plate 20 fitted with a semi-conical member 21 and having its ends bent to form side cheeks 22. The shoot 12 is supported by a pivoted strut 13 and is vibrated longitudinally by a bell-crank lever 16 actuated by a reciprocating rod 15 the end of which is fitted with an adjustable striker 17 arranged to impact the tray 10. The shoot may be vibrated by magnetic means.
Patent GB-1027709-A (GB)
Title: Improved arrangement for joining panels boards as slabs
IPC: E04C2/12
Filed: 1965-02-26
Abstract: 1,027,709. Wood joints. JUNCKERS SAVVAERK A/S. Feb. 26, 1965 [Aug. 12, 1964], No. 8345/65. Heading A4H. In a tongue and grove joint for joining panels, parquet flooring boards and other wooden slabs the tongue 2 has a curved concave surface 3 of circular arc form and the groove 4 is of similar configuration.
Patent GB-234586-A (GB)
Title: Improvements in and relating to moulds for casting concrete and the like plastic materials
IPC: B28B7/00
Filed: 1924-04-02
Abstract: 234,586. Harrison, J. H., and Harrison, N. April 2, 1924. Moulds.-In a mould for casting concrete and like materials which is provided with loose liners adapted to be retracted from the moulded article on removal of the mould, compression springs g, i, Fig. 2, are provided. which tend to force the liners c, c<1> away from the moulded article, the liners being held in position by the engagement of rollers e with the highest portion of track plates d, Fig. 3. The plates d are mounted on the liners c, c<1> and are formed with inclines d<1> terminating in recesses d<2>, while the rollers e are mounted on channel bars e<1> secured to the sides a<1> of the mould and to adjustable brackets k in the case of the end liners c<1> which have projecting portions c<2> which move in slots c<3> in the side liners c. When the mould is inverted to deposit the block l, and subsequently raised, as shown in Fig. 4, the liners c, c<1> remain stationary during the preliminary lifting movement and then move away from the block under the influence of the springs g, i, the rollers e travelling upwards along the inclined faces d<1> and finally engaging the recesses d<2>. The device is applicable to moulds which are lifted away from the block without inversion and the rollers e may be carried by the liners and the tracks d bv the mould, while some of the liners may be allowed to remain in contact with the block when the mould is lifted. In lieu of rollers, plates having faces correspondingly inclined to and engaging with the faces d<1> may be employed. In a modification, rollers are dispensed with on the end liners c<1> and blocks l, l<1>, Fig. 6, having coacting inclined faces are provided on the liners c, c<1>, the inner and outer positions of the liners c, c<1> being shown in full and dotted lines. This device is preferably used in combination with rollers e and track plates d for controlling the side liners c. A protective cowling n, Fig. 3, is provided.
Patent GB-768074-A (GB)
Title: Improvements relating to natural and synthetic rubber compositions
IPC: C08K3/36
Filed: 1955-03-23
Abstract: A vulcanized synthetic rubber composition is reinforced with carbon black and silica, the latter having an average particle size of 0.01 to 0.05 micron and a surface area of 50 to 225 square metres per gram and constituting about 15 to 60 per cent by weight of the combined carbon black and silica.  The silica is preferably a hydrated silica and may be prepared by reacting a sodium silicate solution with carbon dioxide gas (see Group III). The composition preferably contains an amount of silica which is at least 10 per cent by weight of the rubber.  The synthetic rubbers specified are butadienestyrene copolymers such as GRS, and other polymers and copolymers of conjugated diolefins having a high abrasion resistance.ALSO:A hydrated silica having a surface area of 140 to 150 square metres per gram and an average particle size of 0.02 to 0.05 micron for use for reinforcing natural or synthetic rubber (see Group V) is prepared by reacting a sodium silicate solution with carbon dioxide gas.  17,000 gallons of sodium silicate solution, Na2O(SiO2)3.36, containing 20.3 grams of Na2O per litre is maintained at a temperature of 162 DEG  to 172 DEG F. whilst a mixture of carbon dioxide, nitrogen, and air containing 10 to 10.8 per cent carbon dioxide is introduced thereinto at a rate sufficient to provide 1,250 cubic feet of carbon dioxide gas per minute (measured at 76 cms pressure and 0 DEG C.).  The gas is introduced for 8 1/2 hours directly under a turbo-agitator in the tank containing the sodium silicate solution.  After this period the rate of supply of carbon dioxide is reduced to 400 cubic feet per minute and the solution is boiled for 1 1/2 hours by introducing steam thereinto.  The slurry is then washed and the silica recovered and dried at 100 DEG  to 125 DEG C.ALSO:A vulcanized natural or synthetic rubber composition is reinforced with carbon black and silica, the latter having an average particle size of 0,01 to 0,05 micron and a surface area of 50 to 225 square metres per gram and constituting about 15 to 60 per cent by weight of the combined carbon black and silica. The silica is preferably a hydrated silica and may be prepared by reacting a sodium silicate solution with carbon dioxide gas (see Group III).  The composition preferably contains an amount of silica which is at least 10 per cent by weight of the rubber.
Patent GB-1213192-A (GB)
Title: Tape cartridge locking and ejector mechanism
Inventor: LOESCHNER ANTHONY
IPC: G11B/
Filed: 1968-02-22
Abstract: 1,213,192. Tape casette apparatus. MOTOROKA Inc. 22 Feb., 1968 [14 March, 1967], No. 8572/68. Heading G5R. When a cassette 12 is loaded to a machine, it engages a linkage 47, 53 subject to an overcentre spring bias 57 to move it to an operative position in which a device 82 connected to the linkage engages, moves and locks the cassette, the linkage also being operable to eject the cassette. As shown, the cassette engages a tab 51 on a lever 47 engageable with the linkage 53 to pivot the latter. Operation of a solenoid 68, by depressing a reject button or by opening the ignition switch of a vehicle containing the machine (circuit, Fig. 5, not shown), causes its armature 70 to retract and pivot a lever 63 to which one end of the overcentre spring 57 is connected. Alternatively, the spring 57 may be anchored to the deck and the cassette loaded and unloaded manually. The machine includes contacts (not detailed) closable by the cassette to energize the motor and a solenoid (38, Fig. 1. not shown) operable to rotate a face cam (34) to track-change the head (28) when contacts (36) are bridged by a conductive portion on the tape.
Patent GB-868999-A (GB)
Title: Frequency modulating system for crystal oscillators
Inventor: KOSOWSKY DAVID ISRAEL
IPC: H03C3/14
Filed: 1959-03-12
Abstract: 868,999. Frequency modulation. HERMES ELECTRONICS CO. March 12, 1959, No. 8614/59. Class 40(5) A frequency modulated oscillator comprises a piezo-electric crystal coupled through a transformer 27 to a feedback circuit of the oscillator comprising a variable reactance Cs, the transformer winding connected to the crystal having the larger number of turns and being resonant with the shunt capacitance of the crystal at the crystal series resonance frequency. This increases the permissible frequency swing. As shown the oscillator comprises a grounded grid valve 12 with resonant anode circuit 21, 20 coupled through a capacitor 25 to the grid of a cathode follower valve 13 whose cathode circuit is connected through a variable reactance tube capacitance Cs and a series inductor Ls to the 'crystal transformer 27 and cathode impedance 27 of the grounded grid valve, the mean value of Cs and Ls being tuned to the crystal series resonance frequency.
Patent GB-1163473-A (GB)
Title: Method and Apparatus for Supplying Adhesive
Inventor: HAWKES WILLIAM ERNEST
IPC: B05C17/005
Filed: 1967-02-23
Abstract: 1,163,473. Jointing. VAUXHALL MOTORS Ltd. 22 Feb., 1968 [23 Feb., 1967], No. 8621/67. Heading B3V. [Also in Division B2] Metal panels may be joined by intermittently arranging on one of the panels buttons of adhesive on which the other panel is pressed, the buttons being formed by dispensing metered quantities of adhesive of viscosity at least 300,000 c.p.s. from pneumatically operated dispensing apparatus having one or more nozzles of such diameter, preferably 0.040 to 0.062 inch, that the adhesive which emerges as a spiral bead curls round to form a circular blob or button on the surface to which it is applied. Preferably the apparatus comprises a plurality of nozzles from which adhesive is dispensed simultaneously. The method may be used for joining inner and outer panels in the construction of motor vehicle engine hoods and luggage boot covers.
Patent GB-784430-A (GB)
Title: Improvements in reversible gears having helicoidal teeth and parallel axes
IPC: F16H55/08
Filed: 1955-03-24
Abstract: 784,430. Toothed gearing. PHILLAC SOC. ANON. March 24, 1955 [March 1, 1955], No. 8622/55. Class 80 (1). In reversible gears of the kind having helicoidal teeth and parallel axes in which the inclinations of the teeth of the pinion and of the gear-wheel are different whilst the axial pitches are the same, and in which the tooth contact is displaced from the plane of the axes of the gears, the profiles of the teeth of the pinion 3, 4 and gear-wheel 5, 6 are completely outside and spaced with respect to one of the " rolling circles " 1 of the gears and in. side and spaced with respect to the other 2. These " rolling circles " are the pitch circles of a pair of conventional gears of equivalent ratio about the same axes.
Patent GB-647923-A (GB)
Title: Improvements in or relating to the use of silicyl esters as water repelling compositions
Inventor: HILL DEREK ALFRED WHEELER
IPC: D21H17/13
Filed: 1948-03-24
Abstract: Glass, ceramic bodies, metals and other materials are made water-repellent by coating with a silicyl ester containing one of the bases defined in Specifications 575,752, [Group IV], 612,622, and 647,537, [both in Group IV (a)], and heating the coated material, e.g. to 100 DEG  C.  The silicyl ester, which may contain a small quantity of water or may be partly hydrolyzed, may be alkyl, aryl, alkaryl, or aralkyl silicate such as methyl, ethyl, or cresyl orthosilicate.  The base may be one of those specified in the Specifications referred to, or may be ethylene diamine.  The composition may also include a solvent such as benzene, toluene, carbon tetrachloride, acetone, or ether, and a wax.  The material may be moistened with water before or after coating.
Patent GB-785188-A (GB)
Title: Improvements in or relating to linear motion drive devices
IPC: F16K31/04
Filed: 1956-03-20
Abstract: 785,188. Screw and nut actuators. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 20, 1956 [March 25, 1955], No. 8650/56. Class 78 (3). [Also in Groups XXIV, XXIX and XXXV] A screw and nut mechanism particularly for the control of valves or the control rods of atomic reactors comprises a linearly movable screw 100 which is driven by the hollow rotor 59, 60 of an electric motor of the reluctance type through a disengageable nut device. This nut device comprises rollers 80 adapted to engage with the thread of the screw carried on arms 72 pivoted on the rotor sleeve 60 at 77. The other ends 85 of the arms 72 are positioned adjacent the rotor 59 and act both as radially moving armatures for operating the nut device and portions of the rotor pole structure. These armatures 85 are moved outwards to engage the rollers 80 with the screw 100 when the motor stator is energized to effect a linear movement of the screw. When the motor is stopped or the current fails the armatures are released to allow the rollers 80 to disengage under spring pressure and the screw 100 is allowed to fall by gravity and/or by the pressure of a spring 120 to its lower limiting position, for example to close a valve. The direction and rate of travel of the screw 100 can be controlled by controlling the frequency and sequence of the power supply, and by reducing such frequency to zero, whilst maintaining the stator energized, the screw may be held in any desired position. A separate coil may be provided adjacent the stator windings to control the armatures 85 which is controlled separately from the motor to correct and disconnect the screw drive. Alternatively the armatures 85 may constitute the whole of the rotor pole structure. Various alternative forms of the screw-engaging rollers 80 are described such as balls and conical rollers. The casing and motor structure is arranged so as to completely seal the screw and nut device from the motor stator and the exterior to enable dangerous and explosive substances to be handled thereby. Cooling fluid may be passed through an annular chamber 33 around the motor stator.
Patent GB-641760-A (GB)
Title: Improvements relating to fluid pressure braking apparatus for railway and like vehicles
IPC: B60T15/08
Filed: 1948-03-25
Abstract: 641,760. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and SIMMONS, A. W. March 25, 1948, No. 8772. [Class 103 (i)] A driver's valve for use in fluid-pressure braking systems for railway and like vehicles is characterized in that mechanism is provided for automatically returning the valve from its release to its running position as soon as the auxiliary reservoir pressure has attained its normal running value, so that overcharging of the reservoir is thus prevented. This mechanism comprises a piston having a rod 17 fitted with a roller 20 which bears against a lug 21 projecting from the brake handle boss. The piston 5 is moved outwardly so as to move the handle 1 back from its release to its running position when the poppet valve 7 is opened by the deflection of the diaphragm 8 that takes place when pressure corresponding to that in the auxiliary reservoir acting on the right of the diaphragm exceeds that corresponding to the standard brake pipe pressure acting on the left of the diaphragm.
Patent GB-879776-A (GB)
Title: Improvements in or relating to gramophone pick-ups
IPC: G11B3/38
Filed: 1958-03-19
Abstract: 879,776. Gramophone pick-ups; guiding. HERVE, M. March 19, 1958 [March 20, 1957 ; April 26, 1957], No. 8793/58. Class 40 (2). A gramophone pick-up is constrained to track a gramophone record radially by the linkage of Figs. 8 and 9. The arm carries a pivoted cartridge T whose stylus P is arranged concentric with a pivot A and whose direction of facing corresponds to that of a lever c, one end of which is constrained to slide along a track h, the other end of which is secured to a pulley a, mounted to swing with the arm about a centre O and operatively connected to the stylus by a cord-and-pulley system. The triangles Oah and OAH, Fig. 8, being similar, a suitable choice of dimensions results in the stylus facing along the line A,B parallel to a,b, the angle B, A, C being in a semi-circle for all positions of A and so always 90 degrees. Other embodiments, requiring more cabinet room dispose the sliding member at B (Figs. 1-4, not shown), and at b (Figs. 5-7, not shown).
Patent GB-141337-A (GB)
Title: An improved tool for the use of manicurists and chiropodists
IPC: A45D29/02
Filed: 1920-03-25
Abstract: 141,337. Werner, H. April 10, 1919, [Convention date]. Manicuring-appliances. - A nail file &c. is provided with bevelled notches b, c with sharpened edges to cut to V- shape the ends of the nails. The other end of the tool is contracted, and provided with a bevelled notch with cutting edges e, f, for trimming the skin at the roots of the nails.
Patent GB-526582-A (GB)
Title: Improvements in or relating to synchronising means for multichannel suppressed-carrier communication systems
IPC: H04J1/06
Filed: 1939-03-21
Abstract: 526,582. Changing wave-shape. GENERAL ELECTRIC CO., Ltd., and WESTELL, E. P. L. March 21, 1939, No. 8943. [Class 38 (ii)] [Also in Groups XL and XXXIX] In a multi-channel suppressed carrier signalling system in which some or all of the carrier frequences are derived from a fundamental frequency lying outside the carrier range, synchronisation is effected from the transmitted fundamental frequency, and wander due to fluctuations caused by "noise" is avoided by applying the fundamental frequency to wave distorting means to produce a wave shape having at least one abrupt change of amplitude. The Figure shows an oscillator 11 synchronized by an input applied to transformer 4 in which distortion. is effected by opposer contact rectifiers 1, 2 and the potential across resistance 10 which applies a bias to rectifier 1. The distorting means may additionally or alternatively include rectifiers 6, 7 in the input circuit of the valve to obtain a peaky wave shape.
Patent GB-1535379-A (GB)
Title: Containers
IPC: B65D19/06
Filed: 1976-03-05
Abstract: 1535379 Containers; box pallets SOUTH WARWICKSHIRE PACKAGING SERVICES Ltd 25 Feb 1977 [5 March 1976] 08957/76 Headings B8P and B8H A container having a foldable fibre board body is held to a pallet base 8 by flaps 11, 12 of a floor, secured at 10 to the base 8, and foldable on to flanges 5 extending inwardly from the lower edges of the sides of the body.
Patent GB-554783-A (GB)
Title: Improvements in and relating to the construction of bridges
IPC: E01D6/00
Filed: 1942-06-30
Abstract: 554,783. Bridges; struts and tee bars. BUTTERLEY CO., Ltd., and WATERS, C. June 30, 1942, No. 8969. Addition to 548,048. [Classes 20 (i) and 20 (ii)] An improvement in or modification of the invention of the parent Specification which consists in replacing the box-section girders forming the side members of the bridge by girders a having at each end a pair of apertured side plates b between which the cylindrical drums, bosses or the like c are positioned with or without the top and bottom plates d. These end plates are secured to transverse plates f which in turn are attached to the ends of the main length of girder which is preferably of tubular section. The ends of the girder section are placed between the apertured end plates of the main bobbin connecting members and secured thereto by bolts.
Patent GB-214257-A (GB)
Title: Improvements in speed change gear
IPC: F16H37/08
Filed: 1924-04-09
Abstract: 214,257. Nadal, P. April 10, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Variable-speed epicyclic gearing comprises stepped planet gears e, g supported in a loose drum a and meshing with sun gears d, h on driving and driven shafts b, c, respectively. The speed of the drum a is controlled by a roller k movable between a face of the drum and that of a disc driven from a toothed wheel i fast on the shaft b. The disc j is adapted to be moved axially by a screw p for connecting and disconnecting. Reversed driving is attained.
Patent GB-609900-A (GB)
Title: An improved method of treating precipitation-hardening copper alloys
IPC: C22C9/00
Filed: 1946-03-25
Abstract: In a method of heat-treating precipitation hardening copper alloys comprising solution treatment followed by precipitation treatment, the precipitation treatment is effected by passing an electric current through the alloy.  The alloys treated may contain 0.25-1.5 per cent chromium or 0.25-2.5 per cent beryllium, the balance in either case being copper and unavoidable impurities; zinc, boron, sodium, lithium and phosphorus may be present up to 0.2 per cent and iron, nickel and cobalt between 0.1 and 5 per cent.  A wire of the alloy may be solution treated, suspended horizontally in air and then have a current passed through it of such strength that the desired results are obtained in one minute.  The heating may be in two stages, a heavy current being followed immediately by a lighter one.