baber/WOPTO huggingface dataset:
Patent GB-164527-A (GB)
Title: Improvements in winches
IPC: B66D5/32
Filed: 1920-03-16
Abstract: 164,527. Whistlecroft, A. W., and Velde, H. R. C. van de. March 16, 1920. Winches; self-sustaining gear; brakes.-A winch, normally braked by releasing the winding- handle, and freed by a slight backward movement of the handle, comprises a winch-barrel a loosely mounted on a sleeve d integral with the winding- handle, and rotatable on a stud f. A spring brake-band c, which presses on an internal brake drum b on the winch-barrel, is attached at one end to a pin h on an arm i projecting from the sleeve, and at the other end to a pin i projecting from a ratchet-wheel k. Raising is effected by clockwise rotation as viewed in Fig. 2, the brake band being pressed outwards and the ratchetwheel overrunning its pawl l. Release of the handle causes the pawl to engage the ratchetwheel, whilst the brake retains the winch, barrel. The winch-barrel may be released by freeing the brake by counter-clockwise movement of the handle, and the lowering speed controlled by the back pressure exerted on the handle.
Patent GB-606575-A (GB)
Title: A process for joining together asphaltic bitumens with different penetration indices
IPC: C09D195/00
Filed: 1946-03-14
Abstract: Surfaces such as concrete, wood or metal, e.g. iron tubes, having a coating of an asphaltic bitumen of the normal type are coated with an asphaltic bitumen of the blown type (see Groups VIII and XXVIII), a firm adherence being obtained by eliminating the sweat phenomenon by incorporating in the normal bitumen the soap of a heavy metal, such as lead, iron, zinc, copper, cobalt, or manganese, with a resinic, sulphonic, naphthenic, linoleic, linolenic, or ricinoleic acid (see Group V).ALSO:The sweat phenomenon between asphaltic bitumens of different penetration indices is prevented and adhesion between two layers of them made possible by adding to the bitumen with the lower index a soap of a heavy metal such as lead, iron, zinc, copper, cobalt or manganese with a resinic, sulphonic, naphthenic, linoleic, linolenic, or ricinoleic acid.  The soaps are usually added in proportion of less than 10 per cent by weight.  Examples are given of coating a jute fabric (see Group VIII) and an iron tube (see Group XXVIII).
Patent GB-1451034-A (GB)
Title: Discharge-lamp circuit
IPC: H05B41/04
Filed: 1975-02-26
Abstract: 1451034 Discharge lamp circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 Feb 1975 [1 March 1974] 8024/75 Heading H2H A discharge lamp circuit comprises the series connection of an inductance 3, capacitor 4 and lamp 5 across terminals 1, 2 of an A.C. source, the operating voltage of the lamp being less than 20% of the R.M.S. value of the A.C. source, and the condition #<#f#LC<<SP>1</SP>/ 7  being satisfied where f is the source frequency in Herz, L is the inductance value in Henrys and C is the capacitance value in Farads. This condition means that the resonance of the ballast circuit is in the range 3À5-4À0 times the frequency f of the A.C. source and it is stated that more efficient lamp operation with a physically smaller ballast is obtained. In the embodiment shown, the lamp 5 has preheatable electrodes 6, 7 and a starter comprises two Zener diodes 10, 11 connected in series between the electrodes with their blocking directions reversed.
Patent GB-1029023-A (GB)
Title: Improvements in or relating to carrying rails for false ceiling panels
IPC: E04B9/36
Filed: 1963-08-21
Abstract: 1,029,023. Suspended ceilings. J. FISCHER. Aug. 21, 1963 [Sept. 3, 1962], No. 8045/65. Divided out of 1,029,022. Heading E1V. In a suspended ceiling a carrying rail 6 for supporting panelling elements consists of a preferably rolled or extruded cross profile, two adjacent flanges 9, 11 of which have lugs 5, 5<SP>1</SP> disposed on those faces of the flanges facing away from the angular space therebetween. In the position shown the lug 5 on the flange 9 may be engaged by a panelled element on the left hand side of the rail 6. Alternatively the rail may be rotated clockwise through 90 degrees into a position in which the lug 5<SP>1</SP> on the flange 11 may be engaged by a panel on the right hand side of the rail. The lug free flanges 10, 13 may be formed with decorative fluting 17 on the sides facing the angular space between them.
Patent GB-762519-A (GB)
Title: Improvements in or relating to the production of titanium or zirconium
Inventor: DERHAM LESLIE JACK
IPC: C22B34/12
Filed: 1954-03-19
Abstract: 762,519. Producing titanium or zirconium. NATIONAL SMELTING CO., Ltd. Feb. 4, 1955 [March 19, 1954], No. 8050/54. Class 82(1). In a process for the production of titanium or zirconium by the continuous reaction of sodium or potassium vapour with the vapour of the tetrachloride of the required metal, the sodium or potassium chloride being produced and leaving the reaction vessel in vapour form, the reaction vessel is lined with titanium or zirconium respectively before passing in the reactant vapours. The form of apparatus shown for producing titanium comprises a reaction vessel 10 lined with sponge titanium 11 in the form of rings or bricks and surrounded by an outer casing 16. An extension 20 on the lower end of the reaction vessel communicates by openings 24 with a pan 23 and with a pipe 22. In operation, sodium chloride 28 is placed in the pan 23 and is melted by a burner 34 and argon is passed in through an orfice in the cap over the end of the pipe 22 to purge the reaction vessel. A gas burner is then introduced through a pipe 17 in the outer casing to heat the reaction vessel 10 to 900‹C. and the heating is continued until the temperature in the reaction space 12 is at least 700‹C. At the required temperature the burner is removed and the plug 29 inserted in the pipe 17. Argon is then passed in through pipes 13 and/or 14, the cap on the end of the pipe 22 is removed and sodium vapour is passed in through pipe 13 and titanium tetrachloride vapour through pipe 14. At the desired input of these reactants (preferably 1 to 2 per cent excess sodium) the argon supply is discontinued. Molten titanium is formed and is collected as pellets in the sodium chloride bath 28, this bath being continuously augmented by the sodium chloride vapour condensed in the pipe 22. This pipe may be cooled e.g. by molten lead. After one or two hours of reaction, granular refractory material e.g. fire brick is introduced through tubes 18, 19 to fill the space between the outer casing 16 and the reaction vessel. If too much solid titanium is formed in the reaction space 12, chlorine may be introduced to react with the sodium and the melted. The outer casing 16 may be omitted and the reaction vessel heated otherwise, e.g. by electric resistance heating. Specification. 736,852 is referred to.
Patent GB-172564-A (GB)
Title: Production of dietetic biscuits
IPC: A23L33/20
Filed: 1921-03-15
Abstract: 172,564. Herbert, G. March 15, 1921. Biscuits are rendered readily digestible by applying under pressure one or more layers containing cerealin which has been obtained from tre wheat berry without resort to any malting process. Sugar and fat with flavourings may be incorporated in the applied unbaked layers which are normally inseparable from the baked biscuit.
Patent GB-313653-A (GB)
Title: Improvements in or relating to taps for controlling the supply of a fluid
IPC: F16K31/56
Filed: 1928-03-16
Abstract: 313,653. Shell-Mex, Ltd., and Lawson, J. March 16, 1928. Safety - valves ; locking- catches.-The nozzle 3 of the delivery pipe of a petrol pump is provided with a piston valve 4, the stem 7 of which carries an actuating- knob 8 and a member having oppositely - inclined surfaces 11, 12, one or other of which is engaged by spring-pressed balls 13, the arrangement being such that the balls retain the valve in either closed or open position, while allowing the valve to open when the pressure of the fluid exceeds a given value. The valve is provided with a mushroom head 6 which, in the closed position, seats against a face 16 to ensure a fluid-tight seal, while in the open position packing 9 in the head 6 seats against a face 10 to prevent leakage past the stem.
Patent GB-1479972-A (GB)
Title: Particle sizing apparatus
IPC: G01B11/02
Filed: 1975-02-19
Abstract: 1479972 Measuring bodies photo-electrically COAL INDUSTRY (PATENTS) LTD 19 Feb 1975 [22 Feb 1974] 8152/74 Heading G1A Particle sizing is performed by determining the amount of obscuration of a light beam directed to light detector means when a particle is caused to slide down an inclined shoot. Particle sizing apparatus comprises an inclined shoot, light detector means extending transverse to the longitudinal axis of the shoot, and a light source arranged to illuminate the detector means. An inclined shoot 1, Fig. 1, comprising a pair of mutually-perpendicular plane plates 2, 3, is provided with light sources 7 which may comprise tungsten strip lamps on rows of LEDs and are arranged to illuminate transverse rows of holes 4, 5 in the plated 2, 3, behind which are rows of photo-detectors 6, Fig. 2, at 10 mm spacing, connected to an analyzer 8. As a lump of coal 9 fed from a vibrator (not shown) slides down the shoot 1, the numbers of detectors 6 shadowed by the lump in two dimensions are measured by the analyzer 8 which provides a signal representing the round sieve size to display or sorting apparatus (not shown). Air jets may be provided to clear dust from the holes 4, 5.  In a second embodiment, Figs. 3 and 4 (not shown) a source, 7, providing a collimated beam illuminates a scanning camera (11) along an axis intercepted by the objects as they fall away from the end of the shoot (1). This arrangement provides a measurement of dimensions in transverse and longitudinal directions. The plates of the shoot may be spaced apart to allow objects smaller than a predetermined size to fall out of the shoot.
Patent GB-971021-A (GB)
Title: Method of and apparatus for making plastic tubes
IPC: B29C35/16
Filed: 1961-03-06
Abstract: 971,021. Corrugating plastic tubes. W. HEGLER. March 6, 1961 [March 5, 1960; Aug. 1, 1960], No. 8154/61. Heading B5A. A transversely grooved plastic tube 29 is moulded by guiding an extruded tube whilst still soft over a mandrel 21 and sucking the tube into grooved chill mould parts 4, 5 mounted on endless chains driven by wheels 2, 3, the speed of the moulds being half that of the plastic tube, to ensure keeping the wall thickness of the tube constant. When set, the grooved tube 29 is released from the mould walls by compressed air, while the mould parts are opened by means of a wedge 14 and move round the wheels 2a, 3a. The grooved tube 29 is then compressed by heating it and passing it through a chamber 42 which has air drawn off through ports 47 and 53, to cause the tube to undergo a slight braking; cold water is circulated through passages 49 to cool the plastic.
Patent GB-165184-A (GB)
Title: Improvements relating to the driving of aircraft
IPC: B64D35/04
Filed: 1920-03-19
Abstract: 165,184. Chilton, W., and Brush Electrical Engineering Co., Ltd. Match 19, 1920. Propelling.-Aircraft are propelled by steam turbines of the Ljungstrom type, i.e. by radialflow double-rotation turbines each of which comprises two rotors mounted on separate shafts and with the blades of one meshing with those of the other so that the two rotors rotate in opposite directions. The turbines may drive the propellers through reduction gearing, and each turbine may drive one or more propellers. Fig. 10 shows a triplane with one such turbine a in the fuselage with its axis longitudinal, and another a' carried on the plane structure above the fuselage with its axis transverse of the machine. The turbine a is shown as driving propellers c, c' at the front and rear of the fuselage, and the turbine a<1> as driving four lateral propellers c, c' through gearing f; but any number of propellers from three to six can be used according to whether the propellers are all of the tractor or pusher type or of mixed tractor and pusher type as shown. The propellers may be arranged at different angles to one another. On smaller machines, a turbine a with fore and aft propellers, or a turbine a<1> driving lateral pro. pellers, may be used alone; or turbines with their axes longitudinal of the machine may be carried in the plane structure at each side of the fuselage, each turbine driving a propeller at the front and a propeller at the rear of the plane structure. The boiler may be at d and the condensers at e.
Patent GB-251410-A (GB)
Title: Improvements relating to the control of electric switches operated by impulses
IPC: H04Q3/00
Filed: 1925-03-27
Abstract: 251,410. Siemens Bros. & Co., Ltd., and Humphries, H. E. March 27, 1925. Automatic exchange systems. - In order to compensate for irregular incoming impulses at a selector of the Strowger type, the circuit of the vertical magnet VM is completed over an additional wiper D‹ which partakes of the vertical movement only and the terminals of which are grounded in turn. In the case of a first selector the grounding of the odd and even terminals of the wiper D<0> may be controlled by a pair of relays P, Q, Fig. 1, or by an auxiliary stepping switch, Fig. 3, which also serve to repeat ground in response to subsequent trains of impulses alternately over the a and b wires to the odd and even terminals of the wiper D<0> at a succeeding switch, Fig. 2. At the connector, a special rotary wiper may be provided for the purpose of operating the rotary magnet. In place of the wiper D‹, a mechanical change-over contact may be employed, operated at each step of the driving magnet. Specification 221,316 is referred to. First arrangement, Figs. 1, 2. When the trunk terminating in the incoming selector, Fig. 1, is seized, line relay A energizes over the b wire, and release relay V and dialling relay D operate in turn. At the first impulse, relay P (1) energizes over contact a3 and locks in series with relay Q (1), while the vertical magnet VM lifts the wipers one step over front contact p3 and wiper D‹. When contact a3 reopens, relay Q (1) energizes, being no longer short-circuited, and at the next impulse a circuit is closed through relays Q (2), P (2) in parallel. The windings of relay P are in opposition, so that it.releases and again connects up the vertical magnet VM at back contact p3. Relay Q relapses when contact a3 opens, and this cycle is repeated until the desired level is reached. Relay D falls back at the end of the impulse train and connects up the rotary magnet RM. In response to further trains of impulses, relays P, Q act as before, and relay D is energized, so that ground is connected alternately to the a and b wires at contact p4 to operate the succeeding switches, test relay T being energized. Answering relay Y upon energization sends back a supervisory signal at contact y1. At the second selector, Fig. 2, dialling relay D (2) energizes over the test wire, and incoming impulses over the a and b wires operate the vertical magnet VM over wiper D<0> and relay D (1). At the end of the impulse train, relay D relapses and connects up the relay magnet RM. Relay D is energized again upon operation of test relay T. Second arrangement, Fig. 3. At each impulse, back contact a3 closes a circuit for the magnet IR of an auxiliary switch of which wiper E‹ corresponds to contact p3, Fig, 1 and wiper F‹ corresponds to contact p4, Fig. 1. A restoring circuit for the switch is closed over wiper P<0> when relay D relapses at the end of each impulse train.
Patent GB-1210694-A (GB)
Title: Phosphoric acid purification
Inventor: TREITLER THEODORE LEO
IPC: C01B25/237
Filed: 1968-02-21
Abstract: 1,210,694. Phosphoric acid purification; hydrogen fluoride. FMC CORP. 21 Feb., 1968, No. 8363/68. Heading C1A. Phosphoric acid, obtained by acidulation of a phosphate rock with sulphuric acid, and having a concentration of 10-30%, by wt. P 2 O 5 , is purified by:-(a) adjusting the calcium ion concentration to 0À25-3À0% by wt. CaO, by addition of a calcium compound whose anion does not remain in, or contaminate, the solution; (b) adding enough hydrogen fluoride to convert all the cationic impurities Ca, Al, Mg and Fe to their fluorides, to precipitate calcium fluoride and to co-precipitate the cationic impurities as their fluorides; (c) separating the precipitate; and (d) recovering phosphoric acid, the pH being maintained below 2 during reaction. Calcium ions may be added as calcium carbonate. Hydrogen fluoride may be added as a 5-15% aqueous 'solution, and, generally, amounts of HF of up to about 5% are required Addition of HF, and the subsequent precipitation can be carried out at from 0‹ to 100‹ C. The pH is preferably 1À5. Hydrogen fluoride may be regenerated by reacting the precipitate obtained with silicon dioxide and steam in a reaction zone at temperatures of 1000‹-1400‹ C. The recovered HF may be recycled.
Patent GB-1071635-A (GB)
Title: Ultrasonic position sensing equipment
Inventor: KAY LESLIE
IPC: G01S15/18
Filed: 1963-03-02
Abstract: 1,071,635. Object detection by ultrasonic pulses. ULTRA ELECTRONICS Ltd. Feb. 27, 1964 [March 2, 1963], No. 8440/63. Heading H4D. An equipment for detecting the presence of an object at a predetermined position comprises a pulse source 20 causing a highly directional transmitting transducer 25 to transmit ultrasonic pulses along a straight line passing through said position and a gate 29 in the receiver transducer (26) path, to be opened, a predetermined time after the corresponding transmitted pulse, said time corresponding to the distance of said position and the receiving transducer receiving in a highly directional line passing through the position, whereby the presence of an object at said position produces an echo pulse which passes through the gate 29.
Patent GB-1173642-A (GB)
Title: Improved Signal-Seeking Tuning System for Radio and Television Receivers.
Inventor: MAYLE LOUIS FERDINAND
IPC: H03J1/18
Filed: 1967-02-22
Abstract: 1,173,642. Stop-on-signal receivers; gating circuits. MAGNAVOX CO. 22 Feb., 1967, No. 8457/67. Headings H3Q and H3T. In a stop-on-signal receiver the tuning motor is controlled by two switches (e.g. transistors) which are activated respectively by signals of two different frequencies from the receiver after a time delay, simultaneous operation of both switches opening a circuit and stopping the motor. This arrangement is particularly suitable for a television receiver in which the simultaneous presence of an I.F. carrier and sync. pulses is necessary to stop the tuning search, thereby preventing mistuning of the vision receiver to a sound carrier or vice versa. In Fig. 1 a U.H.F. tuner 11 is driven by a motor 12 when a start switch 24 is closed, the rotor moving axially to close a holding contact 18 and further contacts 28, 29 for muting the sound and blanking the picture during search. The switch 24 may be operated by a solenoid controlled by a remote button over a radio link. Stopping of the motor is achieved by opening of switch 27 by current through coil 31 when both transistors 32 and 33 conduct. While the motor is energized, the supply terminal 21 passes current through resistor 36 and silicon rectifier 37 to line 34 as power supply to the transistors. Capacitor 38 imposes a delay on the establishment of the supply voltage so that the motor will have time to move off the previous station. Conduction of transistor 33 is enabled by the application of sync. pulses to its base via a circuit 54 tuned to the sync. pulse repetition frequency or the second harmonic thereof. Capacitor 80 maintains the collector-emitter voltage in the intervals between the pulses. Conduction of transistor 32 is controlled by a further transistor 39 which is enabled by the vision I.F. applied to a tuned circuit 47. When transistor 39 conducts, it passes this signal to a further tuned circuit 48 coupled to transistor 32 and allows this to conduct also. Rejection of weak signals is effected by applying a negative A.G.C. voltage to transistor 39 through a Darlington pair 57, 58 and an R.C. circuit 61, 62 having the same time constant as the circuit which applies the A.G.C. voltage to the I.F. stages. Thus transsistor 39 will conduct only if the A.G.C. voltage is above a predetermined level. In a modification (Fig. 2, not shown), a shaded-pole motor is used with a step-up gear ratio to the tuning shaft. Overshoot is prevented by a resistance in series with the shaded-pole winding, this resistance being shorted out when a switch (71) is closed by reception of the sync. pulses. If the receiver uses transistors in the I.F. stages transistor 57 may be omitted and transistor 58 may be one of the I.F. amplifiers.
Patent GB-622590-A (GB)
Title: Improvements in mixing or agitating apparatus
IPC: B01F7/00
Filed: 1947-03-31
Abstract: 622,590. Mixing apparatus. HUYBREGHS, E. J. G. March 31, 1947, No. 8640. Convention date, April 8, 1946. [Class 86] An agitator or mixing stirrer for viscous liquids, pasty materials &c. comprises a disc c provided on one or both surfaces with vanes d. The disc c is concave so that its greater thickness is at the periphery, so that as it is rotated about its axis b material is thrown off in a direction which becomes tangential to the walls of the container a. The vanes d may be of decreasing height as shown, or of uniform height or of increasing height from the centre to the periphery. The disc may be mounted vertically, horizontally or obliquely.
Patent GB-1079903-A (GB)
Title: Reciprocating hydraulic pumps and motors
Inventor: NORTH JOHN DUDLEY
IPC: F01B3/00
Filed: 1964-03-02
Abstract: 1,079,903. Reciprocating pumps and motors. BOULTON PAUL AIRCRAFT Ltd. March 1, 1965 [March 2, 1964], No. 8713/64. Heading F1A. A rotating cylinder block 13 is axially slidably supported on a drive shaft 3 by means of bushes 14, 15 and is drivingly connected thereto by splines 12. The shaft is supported in bearings 2, 5 and axially located by members 7, 8. The valve plate 28 is angularly adjustable by a worm engaging teeth on the periphery. Leakage oil collects in a groove 37 and feeds the various bearings, part of the flow being controlled by a restrictor 38. Pump delivery pressure liquid may be fed between the bushes 14, 15.