baber/WOPTO huggingface dataset:
Patent GB-1171064-A (GB)
Title: Overrunning Clutch with Automatic Release.
IPC: F16D41/10
Filed: 1968-01-29
Abstract: 1,171,064. Ratchet clutches. BORGWARNER CORP. 29 Jan., 1968 [9 Feb., 1967], No. 4524/68. Heading F2C. In a ratchet clutch for transmitting drive in one or both directions and over-running in both directions wherein caged rollers 46 wedge between cam surfaces 29, 31 on an outer driving race 18 and a cylindrical inner driven race 19, a control mechanism 23 co-operating with a non-rotating ratchet 74 rotates the roller cage 44 to a clutch disengaged position when the driven race 19 rotates reversely. As shown in a bi-directional ratchet clutch, two control levers 78, 79 pass through recesses 49, 51 in the cage 44 and are pivoted at their outer ends to the driving race 18. The inner free ends of the levers 78, 79 are pivoted to pawls 76, 77 biased by a spring 82 towards the ratchet teeth 74 on a fixed ring 22. In the disengaged position shown, the pawls 76, 77 engage stops 36, 37 fast with the driving race 18. A drag spring 69 fast with the cage 44 engages a groove 73 in the non-rotary ring 22. During initial clockwise rotation of the driving race 18, the cage 44 is held stationary by the drag spring 69 until the rollers 46 wedge between the cams 31 and inner driven race 19. Movement of the stops 36, 37 with the driving race 18 pivots the pawl 77 away from the ratchet teeth 74 and permits the pawl 76 to engage the ratchet teeth 74. Subsequent rotation of the driving race 18 drives the driven race 19 whilst the pawl 76 ratchets over the teeth 74. Overrun of the driven race 19 in the driving direction is permitted in the normal manner and the drag spring 69 prevents the cage 44 and rollers 46 being carried forward into wedging engagement between the cam surfaces 29 and driven race 19. On reverse rotation of the driven race 19, with the rollers 46 wedged between the cam surfaces 31 and driven race 19, the pawl 76 engages and is held by the ratchet teeth 74 so that the control lever 78 rotates anticlockwise about pivot 81 when the outer race 18 is driven reversely by the inner race 19. The lever 78 thus causes the cage 44 to lag behind the outer race 18 and disengages the rollers 46 from the wedging position and permits reverse over-running of the driven race 19. The operation during anticlockwise rotation the driving race 19 is similar to above with the pawl 77 operative and the pawl 76 held clear of the teeth 74 by the stop 37. In Figs. 5 and 6 (not shown), the cam surfaces (129) on the driving race (118) are shaped to drive in one direction only and a single control lever (78) and pawl (176) disengage the clutch to permit reverse overrun. In Fig. 7 (not shown), the clutch drives in one direction only and a pawl (276) pivoted to the cage (244) engages non-rotating ratchet teeth (274) to disengage the clutch on reverse rotation of the driven race (219).
Patent GB-285357-A (GB)
Title: Improvements in telegraphic transmitters
IPC: H04L27/04
Filed: 1928-02-13
Abstract: 285,357. British Thomson-Houston Co., Ltd., (Assignees of Engstrom, E. W.). Feb. 11, 1927, [Convention date]. Keying systems.-In a telegraphic transmitter embodying a thermionic valve oscillator 1 the anode current for which is supplied through a smoothing circuit 11, means is provided to prevent transient oscillations in the smoothing circuit due to rapid changes of anode impedance caused by keying at 6. For this purpose, an inductance 14 for eliminating surge currents and comprising a coil or low inductance wound on a core of lowreluctance is connected between the smoothing circuit and the valve. The anode current is supplied from an alternating-current source 7 with Associated rectifying means 9, 10.
Patent GB-143612-A (GB)
Title: Improvements in breech-closing means for small arms
IPC: F41A3/30
Filed: 1919-02-24
Abstract: 143,612. Fairfax, H. W. Gabbett-. Feb. 24, 1919. Breech actions, sliding breech-block. - Relates to rotary-bolt actions, particularly of the Lee-Enfield pattern, and consists in providing one or more locking-lugs formed in sections or steps of different height, or formed in one section of gradually varying height, in order to decrease the angular movement required for locking the bolt. The form illustrated is of the stepped type, the bolt A having three lugs stepped at B<1>, B<2>, and the breech-end C having locking-faces correspondingly stepped at D<1>, D<2>. The bolt is shown in the locking-position, and is unlocked by one-ninth of a turn clockwise. The lugs and locking-faces have rounded corners to prevent the setting-up of severe local stress.
Patent GB-411976-A (GB)
Title: Improvements in and relating to apparatus for arresting the fall of pit cages, liftsand the like
IPC: B66B5/22
Filed: 1933-02-15
Abstract: 411,976. Lifts. WILCOCK, R., 46, Gordon Street, Leigh, Lancashire. Feb. 15, 1933, No. 4583. [Classes 78 (ii) and 78 (iii).] To arrest a lift-cage should it overrun or fall below the bottom landing, skids 9 are provided on the cage in alignment with resilient converging members 10 in the bottom of the shaft. The members 10 may be of wood and they may be secured by bolts 11 which may be released in order to release the cage. The cage may be supported at the level of the bottom landing by keps 17 on a shaft 14 operated by a hand-lever 13. The keps are withdrawn when winding men.
Patent GB-990829-A (GB)
Title: Improvements in or relating to heating apparatus for buildings
Inventor: DURDY ARNOLD
IPC: F24C13/00
Filed: 1962-02-06
Abstract: 990,829. Combined space heaters and boilers. IDEAL-STANDARD Ltd. Feb. 5, 1963 [Feb. 6, 1962], No. 4612/62. Heading F4W. A heating apparatus for buildings comprises a space heater for heating the area or room in which the apparatus is situated and a liquid heater for heating liquid in a circulation system connected to the apparatus, the space and liquid heaters each having independent gas burners and controls. In the form shown, the space heater and liquid heater, consisting respectively of a radiant element 19 and spaced hollow castings 4, 5 mounted behind the element are respectively fired by individually controllable gas burners 23, 11. The hot gases from the burner 23 pass from an opening adjacent the element 19, through a front passage 25 formed between a removable refractory element support 20 and a corrugated front plate 24 with an extending inclined edge portion 24a, through a top passage 26 in the castings 4, 5, and through a rear passage or chamber 85 to the chimney outlet 86. The second burner 11 for the liquid heater is positioned beneath a slot in a lower plate 9, the hot gases from this burner passing upwardly through the space between the castings to heat the liquid in the castings 4, 5, which are formed with integral projections 6 on their opposed faces, to the top passage 26 and thence to the chimney 86. The chimney outlet is disposed at the upper end of the rear passage 85 and this passage is connected at its lower end to a duct forwardly extending to the boiler front and positioned beneath the burners so that an up or a down draught of air will not affect the burners.
Patent GB-159145-A (GB)
Title: Improvements in valve gear for reversible internal combustion engines
IPC: F01L13/02
Filed: 1921-02-09
Abstract: 159,145. Junkers, H. Feb. 21, 1920, [Convention date]. Valve-gear for actuating a fuel valve 1 comprises a single crank 12 or an eccentric driving two connecting-rods 4, 5 terminating in forward and reverse cams 6, 7, the rods being connected by links 8, 9 to a common pivot 10 on a reversing- lever 11 pivoted at 13. On moving the lever 11 into the forward or reverse position, one or other of the cams 6, 7 is moved into position for actuating the fuel valve through a lever 2 and roller 3. In the intermediate position of the lever 11 shown, neither cam will actuate the valve. In modifications, the cams may be mounted on the rods 4, 5 between the crank 12 and the links 8, 9, and the links may be suspended above the rods. The roller 3 and cams 6, 7 may be interchanged.
Patent GB-451430-A (GB)
Title: An improved carver fork
IPC: A47G21/02
Filed: 1935-02-14
Abstract: 451,430. Carving-forks. THORNTON, G. W., Lowther House, Stumperlowe Hall Road, Fulwood, Sheffield. Feb. 14, 1935, No. 4716. [Class 30] In forks having a guard g of the kind formed with flats a, b, which bear alternately on a spiral spring c housed in a hole d in the shank of the fork, the hole is made cylindrical throughout. Reference has been directed by the Comptroller to Specification 2019 /90, [Class 30].
Patent GB-947633-A (GB)
Title: Improved copy sheets
IPC: B41M5/32
Filed: 1960-02-10
Abstract: 947,633. Heat-sensitive copying sheets. MINNESOTA MINING & MANUFACTURING CO. Feb. 10, 1960 [Feb. 13, 1959], No. 4735/60. Heading G2C. A heat-sensitive copying sheet suitable for thermographic production of graphic original has a heat-sensitive layer comprising a water soluble compound of a cation and a difficulty reducible heteropoly acid complex having a central atom with an enclosing structure of atoms selected from molybdenum, tungsten or vanadium or mixtures thereof, a water soluble hydrolyzable salt of a strong acid anion and a metal cation not readily oxidisable in aqueous solution, and a water soluble reducing agent having a mild reducing action in acid solution, the heat-sensitive layer being capable of permanently converting to a visibly distinct form upon being momentarily pressed against a metal test bar at a temperature in the range 60 to 150C. Said heteropoly acid complex, preferably a phosphomolybdate, may be produced in aqueous solution for example by the interaction of a molybdate - e.g. ammonium molybdate - and a phosphate - e.g. disodium acid phosphate. Analogous reactions occur between molybdates and silicates or arsenates and between tungstates or vanadates and phosphates. Aluminium, chromium, iron, cobalt, manganese, antimony, germanium, boron, copper, tellurium, titanium, selenium, zirconium and thorium also form a heteropoly acid complex anion with molybdenum, tungsten or vanadium. Ascorbic acid and thiourea are the preferred reducing agents but itaconic acid, malic acid, para-amino-phenolsulphate, tartaric acid and sodium thiosulphate may also be used alone or in combination. Suitable hydrolyzable salts include magnesium chloride, calcium chloride, aluminium chloride, cadmium chloride, lithium chloride, magnesium bromide, magnesium nitrate, magnesium sulphate, manganese chloride, manganese sulphate, nickel chloride, strontium choride, zinc chloride zinc sulphate and cobalt chloride. A water soluble salt of a weak acid having an ionisation constant of less than 10<SP>-3</SP> may be added to stabilize the compositions. Preferred examples include ammonium or alkali metal citrates, tartrates, acetates, formates, lactates, benzoates, phthalates, malates, carbonates and bicarbonates. Examples are given in which the reactants are dissolved in an aqueous solution for coating on to or impregnating into a suitable web material including aluminium foil and also (Example 8) in which they are dissolved in a film forming material which may be ethyl cellulose in acetane or water soluble cellulose or polyvinyl derivatives for producing self supporting sheets. The web material may be coated with a thin opacifying layer (Example 2) to increase contrast and may also have a thin transparent protective surface coating.
Patent GB-453702-A (GB)
Title: An improved process for reclaiming vulcanised rubber
IPC: C08J11/16
Filed: 1935-02-14
Abstract: In the reclaiming of indiarubber, fibre-free scrap in the disintegrated solid state is heated and subjected to the action of oxygen to promote plasticization of the material.  The oxygen may be supplied by using a compound yielding oxygen under the conditions of treatment, e.g. sodium perborate, but it is preferred to treat the rubber with a mixture of air and steam under pressure.  The process may be applied as a step subsequent to the known acid or alkali treatment, and the material is then subjected to the usual mechanical finishing treatment.  A container for use in the oxygen treatment is described, and consists of a number of spaced compartments, the whole being made of perforated sheet metal.  Specification 8992/12, [Class 70], is referred to.
Patent GB-1073374-A (GB)
Title: Improvements relating to sawtooth  generating circuits
Inventor: BALEAN JOHN HERMANN
IPC: H03K4/84
Filed: 1963-02-06
Abstract: 1,073,374. Transistor sawtooth circuits. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Jan. 20, 1964 [Feb. 6, 1963], No. 4839/63. Heading H3T. [Also in Division H2] The line timebase generators disclosed in Specification 964,609 are modified by replacing the semi-conductor controlled rectifier by a transistor having a diode connected in the collector circuit. Reference has been directed by the Comptroller to Specification 964,609.
Patent GB-342909-A (GB)
Title: Improvements in or relating to boxes
IPC: B65D25/00
Filed: 1930-02-14
Abstract: 342,909. Boxes for smokers' requisites &c. HAMPTON, D. B., 53, South Croxted Road, West Dulwich, London. Feb. 14, 1930, No. 4941. [Class 18.] In a box containing two or more inner platforms, receptacles, &c., adapted to rise in tier formation when the lid is opened, the platforms are arranged one within the other and all of them are raised automatically in tiers when the lid is opened. Such boxes may hold smokers' requisites, bottles, manicure fittings, or other articles. In one form, a cylindrical box contains nested platforms h consisting of tubes outwardly flanged at the lower end, and the central tube has a solid extension k and slides on a tube l secured to the bottom of the box. When the lid is raised, a spring in the tube l pushes up the central tube until a ridge x on that tube contacts with a ridge z on the tube l, and every other platform is raised by the edge of the platform above contacting with a ridge n on the lower platform. Channels o into which wires are sprung prevent the platforms dropping out if the box is inverted. The tubes on the two outer platforms need not extend above the ridges n. If, instead of having a bayonet fitting, the lid is hinged, a connecting-link is used to retard the speed of rise of the platforms ; or the spring may be dispensed with and the lid connected to the central unit.
Patent GB-197740-A (GB)
Title: Improvements in or connected with cases, bags, boxes and the like
IPC: A45C15/06
Filed: 1922-02-20
Abstract: 197,740. Adams, W. H. Feb. 20, 1922. Bags.-The lighting of an electric battery lamp or lamps fitted within and adapted to illuminate a bag or similar article, is controlled by a switch comprising a flap g mounted by means of a hinge k, which may be spring-controlled, on the exterior of the bag, and adapted when in the turned-down position to make contact with a stud o. The flap is adapted to be retained in the raised " open position by a catch m, and in this position covers an aperture p through which normally the light may shine to illuminate objects external to the bag. The flap can be made sufficiently loose on its hinge to rattle against the contact stud when the bag is shaken, as during carrying, this giving warning to the user that the flap has become accidentally released and is wasting current. The bag may be employed for signalling by a pivoted disc having two or more coloured glass or like windows being mounted in front of the aperture p.
Patent GB-233815-A (GB)
Title: Improved driving belt and method of manufacturing the same
IPC: F16G1/10
Filed: 1924-02-27
Abstract: 233,815. Freedlander, A. L. Feb. 27, 1924. Belts. - A driving-belt, particularly for automobile fan belts, is built up in three layers, an inner layer of soft rubber mixed with cotton, wool, or other fibres transverse to the belt length, a central layer supporting the belt pull and formed of pre-stretched rubberized cord fabric with the cords parallel to the belt length, and an outer laver of rubberized fabric with threads oblique to the belt length. The layers are superimposed on a spool 10, preferably only one thickness of the inner layer x being used, but the other layers 2, y being each wound three times around the spool. The complete assemblage on the spool is finally vulcanized. The fibres for the inner layer are mixed with the rubber in a mill, the mixture being then calendered. The fibres run mainly longitudinally of the strip, which is then cut transversely, so that in the finished belt the fibres lie transversely and limit transverse stretching. The machine shown in Fig. 1 is used for assembling the layers on the spool, each strip in turn being placed on the drum 1, or separate drums being used for each strip. On their way to the spool 10, which is rotated by gearing 14, 13, 11, the strips pass over a tension or stretching pulley 6, the frictional resistance to turning of which may be altered by adjustment of a block 9 bearing on the axle 7 so as to provide the required amount of stretching of the layer 2. The strip ends are secured in position during assembly by pressing together their slightly-overlapping ends, the ends of the various layers being arranged to break joint. The vulcanization takes place on the spool.
Patent GB-114485-A (GB)
Title: Improvements in or relating to Apparatus for the Softening and Purification of Water.
Inventor: LASSEN JENS JAKOB
IPC: C02F1/52
Filed: 1917-04-11
Abstract: 114,485. Lassen, J. J., and Hjort, V. F. April 11, 1917. Filters with loose filtering-materials; purifying liquids.-Apparatus for the softening and purification of water is provided with tank into which the water employed to flush out the settling tanks is discharged and from which it is returned to the filtering apparatus. In the arrangement shown in Figs. 1 and 3, water is heated with a reagent in a tank B whence it passes to a distributing trough D' and thence through valve-controlled openings D<2> to separate settling compartments E. From the settling compartments, the water passes over a partition E<3> to chambers G, G<1> provided with filtering material H and thence to the outlet K. The chambers E are provided with flushing cocks E<4> discharging into a trough L, which communicates with a tank L<1>. A similar tank L<2> extends below the chambers G, G<1>, to receive the washing water therefrom. Floatcontrolled inlets L<4> are provided in the banks L', L<2> through which the collected washing water is drawn off and returned to the tank D by a pump L<6>. In Figs. 4 and 5 the invention is shown as applied to the utilization of a Lancashire boiler shell. The shell is divided by a partition N<3> and is mounted above a tank L<8> which receives the waste-water. The flues N<1>, N<2> serve as settling compartments whence the water passes to the interior of the shell N and thence beneath the partition N<3> to the filter H<3>. The wash-water is returned to the tank B<1> by a float inlet L<10> and pump L".
Patent GB-215478-A (GB)
Title: Improvements in the application of locks and fastenings to purses, bags, attache cases and such like
IPC: B25D3/00
Filed: 1923-02-22
Abstract: 215,478. Cheney, C. W. Feb. 22, 1923. Attaching spiked plates and the like.-The fastening devices for bags, purses, attachÚ-cases and the like are provided with sharp prongs and are attached to the bags &e. by a tool comprising two members reciprocated by a common plunger, one for pressing the leather or like material on the prongs to cause their penetration and the other for clenching the protruding prongs. The plunger j carries a block i to which are rigidly connected punches i<2>, i<3>, i<4> or as many as there are prongs f on the fastening device e. The other member h has rods n, o held in sliding engagement with the block i by slots q and screws r. A strong spring m abutting against the block i and member h keeps the member h in its forward position, and the punches i<2>, i<4> move in openings h<2> in the member h. The fastening devices e are laid on the fixed die g with the hasps or like in recesses and the prongs f pointing upwards. The plunger j is moved downwards after the leather &c. l has been placed over the prongs, the member h, by reason of the strong spring m, presses on the leather, causing the sharp prongs f to penetrate. Continued downward motion of the plunger j causes the member m to continue to grip the leather and hold it in place while the punches i<2>, i<4> clench the prongs as shown in Fig. 3.
Patent GB-1157595-A (GB)
Title: Self-Regulated Resonating Apparatus.
IPC: G01V1/155
Filed: 1968-02-01
Abstract: 1,157,595. Ball mills. ELECTRONIC ASSISTANCE CORP. 1 Feb., 1968 [6 Feb., 1967], No. 5183/68. Heading B2A. [Also in Division G1]  In a ball mill for paint grinding fluid material is passed through an array of parallel tubes 21, containing metal balls, within steel tanks or masses 10, 11 which are connected by springs 14, 15 and resiliently sup ported on legs 13 to permit oscillation of the tanks 10, 11 toward and, away from each other when driven at the resonant frequencies by a hydraulic piston and cylinder unit 17, 16 controlled by an electromagnetic valve 18. The resonant frequency will vary in accordance with the mass of fluid material in the tubes. A core 29 of a differential transformer 27 is attached to tank 11 while the coils -thereof are attached to .tank 10. The transformer produces an output in line 30 at the oscillation frequency but shifted in phase therefrom. The phase is. corrected .by a phase shifter 31 and control unit 32 and the signal is fed back via line 34 and amplifier 36 to control the valve 18 to operate at the sensed; oscillation frequency. When low amplitude mechanical oscillation is desired the output of a "start generator" 35 comprising a self excited oscillator, having a frequency close to the resonant frequency of the masses, and which locks onto the phase and frequency of the feedback signal is added to. the feedback signal in the amplifier 36. The amplifier thus provides an output signal of magnitude sufficient to maintain low amplitude oscillation. When the gain control 37 is adjusted , to provide a gain of more than unity the start generator drops out.