baber/WOPTO huggingface dataset:
Patent GB-1507742-A (GB)
Title: Centrifugal filters
IPC: G01N29/12
Filed: 1976-06-25
Abstract: 1507742 Detecting build up of filtrate in filter GLACIER METAL CO Ltd 25 June 1976 [27 March 1975] 12806/75 Heading G1G Build up of filtrate 11 in the rotor of a centrifugal filter is detected by sensing changes in vibrations of the rotor. The rotor may be ferromagnetic, e.g. steel, or aluminium incorporating a nickel-iron alloy, and is vibrated by an electromagnetic coil 4 either at a constant frequency equal to its resonant frequency in the absence of filtrate or at its instantaneous resonant frequency. A detector coil 6 and circuitry responding to change in amplitude, frequency or phase actuates a visual indicator 10 when a predetermined filtrate build up has been attained.
Patent GB-669065-A (GB)
Title: Improvements in electric furnaces with cylindrical carbon resistors
IPC: H05B3/66
Filed: 1949-05-13
Abstract: 669,065. Electric resistance furnaces. SKODA WORKS, NATIONAL CORPORATION. May 13, 1949 [May 14, 1948], No. 12883/49. Class 39(iii) In an electric furnace wherein a carbonaceous resistor tube 1 itself constitutes the furnace, at least one of the electrode terminals 3 of the resistor tube 1 is axially movable and is supported by ball or roller bearings 8, one terminal 3 being fixed and the other terminal being movable, or both being movable. The tube 1 may be of graphite and has a thickened head 2 at each of its two ends. Water-cooled electrode terminals 3 are pressed on to the thickened heads. The charging equipment is arranged on one side of the furnace and on the other side is a discharge device 4 which is connected to the resistor tube 1 by a tube 5. The water-cooled electrode terminals 3 are supported by roller bearings 8 so that they may move easily in the guides 7. The charging and discharging devices are supported by ball bearings 18. A transition between the cross-section of the thin walls of the resistor tube 1 and of the thickened heads 2 is formed firstly by a conically tapered part 9 and secondly by a part 10, the taper of which increases progressively in the direction towards the part 2.
Patent GB-401319-A (GB)
Title: Improvements in and relating to intermediate frequency transformers for use in wireless reception
IPC: H03H7/01
Filed: 1932-05-05
Abstract: 401,319. Wireless receiving-apparatus. COLLE, V. G. V,. and WARD & GOLDSTONE, Ltd., Frederick Road, Pendleton, Manchester. May 5, 1932, No. 12980. [Class 40 (v).] An intermediate frequency transformer for superheterodyne receivers comprises coils d, e wound on bobbins movable on a cylinder b graduated to show the extent of coupling, either or both of the coils carrying on the side farthest from the other, a compression type variable condenser f, which may be connected across it to tune it, the distance between the condenser plates being adjustable by a screw g. Fine adjustment of either of the screws g after assembly is obtained by rotation of the corresponding gear spindle m, geared to a sector h which is engaged by a lug j connected to the corresponding screw g. Initial adjustment of the condensers is effected by means of the screws g prior to their fixation to the lugs h. The screws g, sectors h and spindles m may be of insulating material. The unit is mounted on a base a and is covered by a screening can c, the coils d, e being locked in any position on the support b by any convenient means, and the heads m<1> of the spindles m being arranged to project from the cam. When the primary of the transformer is untuned, its condenser may be used for some other purpose such as coupling to an oscillator circuit.
Patent GB-1021528-A (GB)
Title: Method for treating a part of a permeable formation
Inventor: BEZEMER CORNELIS
IPC: C09K8/56
Filed: 1964-03-26
Abstract: 1,021,528. Wells; consolidating earth. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. March 26, 1964, No. 12985/ 64. Heading E1F. In a method of consolidating part of a permeable formation penetrated by a borehole and comprising injecting through the borehole a slug of liquid suitable for displacing water and containing a solvent having an "organo functional silane" dissolved therein, then injecting through the borehole a second slug of liquid suitable for displacing the solvent and having a second solvent containing a resin-forming composition dissolved therein, and retaining the second solvent in the part of the formation until a hard cross-linked resin has been formed, one of the slugs is suitable for displacing oil. The "organo functional silane" means an organic substance containing a silicon atom, a functional group suitable for reacting with the particles of the formation and a functional group suitable for reacting with one of the components of the resin forming composition or the product formed thereby. The silane has an amino, epoxy, methoxy or ethoxy group reacting with the resin-forming composition or product and is at most 1 vol.% of the solution. The resin-forming composition may be uncured resin such as a polyepoxide having o /  \  more than one epoxy group -c - c- || per molecule, and a curing agent such as a polyamine compound containing at least three amino-hydrogen atoms, or the polyepoxide and a substance formed by reacting the polyepoxide with a curing agent, or a hydroxyaryl compound and an aldehyde. The resin-forming composition is from 3-50 vol. per cent of the solution, the amount determining whether the walls of the formation pores are coated or whether the pores are filled with resin. The leading part of the first slug may be a pre-flush liquid suitable for displacing the water, or the solvent in the first slug may be suitable for displacing the water. The pre-flush liquid may be liquid, such as acetone or an alcohol, which is suitable for driving the oil. When the first slug displaces only water the solvent in the second slug may displace the first solvent and the oils or the spacer liquid at the leading port of the second slug may displace the first solvent and the oil. The quantities of the constituents of the slugs are found by tests on sand packs containing water and oil at the formation temperature and pressure. The second slug is driven down the borehole by mud having plastering properties so that a resin coating is not formed on the walls of the borehole, and the resin deposit is not displaced outwardly from the walls of the borehole. Carbonates deposited on the sand of a formation are removed by acid prior to the treatment consolidation. The method may be applied to formations containing oil only or water only.
Patent GB-1269433-A (GB)
Title: Model racing car
IPC: A63H18/12
Filed: 1970-03-18
Abstract: 1,269,433. Model racing car. TYCO INDUSTRIES Inc. 18 March, 1970 [29 Oct., 1969], No. 12998/70. Heading A6S. A model racing car 10 comprises a generally horizontal frame 11, a motor 12 mounted within the frame and having a rearwardly extending drive shaft 13, rear wheels 15 carried by a rearward region of the frame 11 and connected in driven relation with the drive shaft 13, front wheels 16 carried by a forward region of the frame, a depending guide construction 17 carried by a forward region of the frame and connected thereto for swinging movement in guiding engagement in a roadway slot, wiper holders 20 carried by the guide construction for swinging movement therewith, a pair of laterally spaced wipers 21 for engagement with roadway conductors, flexible wires 113 electrically connected between the wipers and the motor, a high density member 70 carried on the underside of the frame 11 to lower the centre of gravity, frame 11 having a vertical through opening 23, high density member 70 comprising a plate extending beneath and in closing relation across opening 23 and the motor 12 being disposed in opening 23 directly on the plate.
Patent GB-629695-A (GB)
Title: Improvements in or relating to a process for preparing high viscosity polyvinyl alcohol and the high polyvinyl alcohol resulting from said process
IPC: C08F8/12
Filed: 1947-05-14
Abstract: High viscosity polyvinyl alcohol is prepared by hydrolysing polyvinyl acetate with sulphuric acid while dissolved in a mixture of methanol and benzene, toluene or xylene containing 3-25 per cent of methanol by weight, and continuing the hydrolysis until the acetate content is 15-40 per cent by weight calculated as polyvinyl acetate.  The reaction is usually carried out under reflux, and the product may then be washed with methyl acetate and methyl alcohol and then neutralized with alkali.  The polyvinyl alcohol may be stabilized by treating with an alkaline substance such as potassium acetate, potassium carbonate, tetraethyl ammonium hydroxide and triethanolamine dissolved in methyl, ethyl, butyl or propyl alcohols or pentanol.  The product may be used in the granular polymerization of vinyl compounds such as vinyl acetate and in thickening polyvinyl acetate emulsions.
Patent GB-411666-A (GB)
Title: Improvements in or relating to rotary screening-apparatus
IPC: B01D33/11
Filed: 1933-05-04
Abstract: 411,666. Sifting-apparatus. HUTTON, G. H., 55, Moorgate, London. May 4, 1933. No. 13068. [Classes 82 (ii) and 117.] Rotary screening-apparatus comprises an inner screen 10 of comparatively coarse mesh and an outer auxiliary 18 of finer mesh surrounding and spaced from the inner screen. One or more helical ribs 19 are secured to the inner surface of the screen 18 and are secured by brackets to H-section beams 15 secured longitudinally on the outer surface of the inner screen. The screen may be made in sections of graded mesh, and is preferably provided with splash rings 22, 25, 26. Baffle-plates, retarding- rings, or other forms of disintegrating or wearresisting devices may be provided in the helical channels. Water for washing the material may be supplied by a perforated pipe 17. Reference has been directed by the Comptroller to Specifications 23094/99, 6536/02, 9400/03, 29311/06, 3314/07, and 250,393, [all in Class 117].
Patent GB-1217008-A (GB)
Title: Electric inductance devices
Inventor: GREATHEAD THOMAS WILLIAM
IPC: G05F3/06
Filed: 1968-03-12
Abstract: 1,217,008. Making magnetic cores. ADVANCE ELECTRONICS Ltd. 12 March, 1969 [12 March, 1968], No. 13083/69. Divided out of 1,217,006. Heading B3A. [Also in Division H1] Laminations for the core of an inductive device are stamped from a sheet of ferromagnetic material in the form of a pair of E's 2, 3 with the length of the portions 4, 5, each of which can abut the limbs of the respective E to form the elements of the core, being not less than the width 'A' of the laminations.
Patent GB-596923-A (GB)
Title: Piston type control valves for hydraulic presses
IPC: B30B15/18
Filed: 1945-05-25
Abstract: 596,923. Hydraulic presses ; valves controlling hydraulic apparatus. TOWLER, J. M., and TOWLER, F. H. May 25, 1945, No. 13113. Addition to 524,564. [Classes 69 (ii) and 135] In order to delay automatically the full opening to exhaust of the cylinder of a hydraulic press, the piston control valve of the parent Specification is provided with a ram 32, Figs. 1, 2, working in a chamber 33 to oppose the movement of the plunger 6 until a safe reduced pressure is reached. The press and the chamber are simultaneously supplied with pressure liquid by the leftward movement from its neutral position of a lever 28 having a fork 31 which engages a flanged collar 27 on the plunger to move it downwards against a spring 26 until an indent 36 in the lever engages a spring- pressed detent 35, in which position an undercut portion 21 of the plunger connects the pump outlet 1 with the press inlet 2 and the chamber 33. To open the press to exhaust, the indent is disengaged and the spring 26 returns the plunger to its neutral position in which another indent is engaged and pressure liquid trapped behind the ram in the chamber. The second indent is then disengaged and the spring continues to move the plunger upwards until it contacts the ram in which position an undercut portion 23 on the plunger permits simultaneous restricted exhaust from the press and the chamber until the pressure is safely reduced, when the spring urges the plunger to its position of full exhaust against the pressure behind the ram. On completion of the upward movement of the plunger, the undercut portion 21 bridges the pump outlet and an inlet 3 to a push-back cylinder and the undercut portion 23 opens the press fully to exhaust.
Patent GB-455773-A (GB)
Title: Improvements in and relating to methods of manufacturing dry rectifiers
IPC: H01L21/14
Filed: 1936-05-09
Abstract: 455,773. Static contact rectifiers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. May 9, 1936, No. 13152. Convention date, May 11, 1935. [Class 37] In order to produce increased blocking action in a dry rectifier, particularly a selenium rectifier, the rectifier v, after the usual forming process by heating or pressure, is connected for some time in series with a resistance w to a forming voltage, operating in the blocking direction, which is considerably greater than the working voltage. The applied voltage may be alternating, or it may be a continuous voltage applied in the blocking direction. A number of rectifiers may be connected in series and simultaneously subjected to the forming voltage.
Patent GB-372553-A (GB)
Title: An improved regulating device for an automatic automobile clutch
IPC: B60K23/00
Filed: 1931-05-02
Abstract: 372,553. Controlling motor vehicle clutches. JANDER, H., 51, Emdenerstrasse, Berlin. May 4, 1931, No. 13169. Convention date, May 3, 1930. Addition to 371,923. [Class 79 (v).], According to the parent Specification the clutch of a motor, vehicle is operated by a servomotor controlled (1) by a device mounted on the gear lever, and (2) conjointly by the accelerator -pedal and means depending on the engine speed, the arrangement being such that the clutch is disengaged whenever the accelerator is released and the engine speed is low. According to the present invention, the speedresponsive device comprises switching means included in the dynamo circuit and so arranged that it closes a magnet circuit controlling the clutch mechanism as soon as the dynamo current falls to a value corresponding to the engine speed at which the clutch is to be disengaged. The servomotor may be electric or else is electrically-controlled. In the construction shown in Fig. 1, the clutch pedal 1 is operated by a servomotor 7 adapted to be connected by a pipe 12 and valves 15, 17 either to the atmosphere at 16 or by a pipe 18 to the engine induction pipe 19. When the valve 15 is closed and 17 open the servomotor is connected to the induction pipe and the clutch is disengaged. The valves 15, 17 are controlled by a spring 47 and a lever 27 operated by a solenoid 30. When the device is to be used a switch 32 is closed and the circuit of the solenoid is made from battery 33 through coil 31, wire 34, accelerator-controlled switch 40, wire 38, contact 39, and pivoted arm 42 to earth. The solenoid is energized and moves the lever 27 in the direction of arrow 28 to close valve 15 and open valve 17, thus operating the servomotor and disengaging the clutch. When the accelerator pedal 24 is depressed to open the throttle 20 the switch 40 is opened, the solenoid is de-energized, and the clutch is engaged. As the engine speed increases, the speed of the dynamo 45 driven thereby also increases, and the current passing through a solenoid 41 to the battery 33 increases correspondingly, until at a predetermined engine speed the solenoid 41 is sufficiently energized to overcome a spring 43 and move the arm 42 away from the contact 39 thus ensuring that even if the accelerator is released, and therefore the switch 40 is closed, the circuit of the solenoid 30 cannot be completed again until the engine speed falls to the limit at which the spring 43 overcomes the attraction of the solenoid 41. The contact 39 is formed as part of an electromagnet in order to avoid oscillation of the arm 42 at the critical engine speed. As described in the parent Specification, the clutch is disengaged during gear-changing, the circuit of the solenoid 30 being then completed through wire 34 and contacts 35 on a grip 36 on the gear lever 37. In a modification, the contact does not form part of an electromagnet, but another magnet is provided acting on spring contacts in connection with the lever 27.
Patent GB-238831-A (GB)
Title: Improvements in dumb-bells and bar-bells
IPC: A63B21/072
Filed: 1925-05-21
Abstract: 238,831. Phelps, H. May 21, 1925. Dumb-bells; bar-bells.-Metal loading plates C are secured by one or two wooden nuts E on to a wooden bar A, which is thicker at the centre than at the screwed ends B.
Patent GB-735335-A (GB)
Title: Improvements in or relating to method for electric resistance welding
IPC: B23K11/00
Filed: 1951-05-23
Abstract: 735,335. Welding by pressure. HART, K. V. May 23, 1951 [June 6, 1950], No. 13349/53. Divided out of 735,284. Drawings to Specification. Class 83 (4). In a method of forming an electric resistance weld between two workpieces brought into engagement along a narrow line of contact, at least two separate current impulses are passed simultaneously between the workpieces during the initial period of which the workpieces are pressed together at a relatively low pressure followed by the application of a high follow-up pressure during the peaks and the decaying portions of the impulses. The apparatus for carrying out the method and the manner of shaping the end of the workpieces to be joined is described in Specification 735,284.
Patent GB-133511-A (GB)
IPC: A47F3/00
Abstract: 133,511. Bey, H. Nov. 11, 1918. Corner joints; coated boxes; contents, viewing; ornamenting boxes.-A metal box for holding deeds, cash, &c., or for advertising purposes, has welded joints, which are enveloped or overlapped by a shaped metal strip, and the box is coated with vitreous enamel. The receptacle may have glass sides d, Fig. 5, secured in place by shaped metal strips b screwed to the body a of the receptacle, the strips b being provided with decorative mouldings b<1>. In a modification, a sheet-iron body part a, Fig. 7, with welded joints is secured to cast-iron parts b by bolts engaging lugs welded to the part a. Glass sides d are secured in place by clips welded on the part b.
Patent GB-133668-A (GB)
IPC: B61K11/02
Abstract: 133,668. Smyth, S. Oct. 7, 1918, [Convention date]. Stand-pipes and water-cranes.-The delivery pipe 6 of a water-crane &c. is connected to the supply by means of a universal joint comprising a curved member 4 passing through a packing-ring 3 disposed on the inside of a flange projecting from a member 1. The outside of the flange is provided with a rotatable ring 10 having lugs 11 receiving a spindle 7, which passes through lugs 8 on the member 4. The pipe 6 is counterbalanced, as shown, and is preferably telescopic.
Patent GB-564885-A (GB)
Title: Improvements in apparatus for pickling metals
IPC: C23G3/00
Filed: 1943-08-17
Abstract: 564,885. Pickling. WEISS, S. M., and KENNEDY, F. J. Aug. 17, 1943, No. 13368. [Class 82 (ii)] Apparatus for pickling metals comprises an immersion tank A for the goods to be pickled, a liquor supply tank E at a lower level than the immersion tank, a cock-controlled conduit F connecting the tanks with each other, a water supply conduit for filling the immersion tank with running water and a compressed-air supply conduit K for expelling liquor from the supply tank to the immersion tank. The goods having been stacked in the empty immersion tank, this tank is filled with water sufficiently to cover them. The water is then allowed to run down into the tank E, where the requisite acid is added through a funnel J, and the liquor is then forced by the air pressure back into the immersion tank. When the pickling is coinplete, the liquor is allowed to run back into the tank E. The cock G is then closed, and rinsing water allowed to run into the tank A. After the goods are sufficiently rinsed, the rinsing water is allowed to run to waste. The rinsed goods are removed from the tank A, fresh goods inserted, and the pickling liquor again forced into the tank. A leaden heating coil B is secured within the immersion tank. The funnel J is used also for introducing acid for replenishing the pickling liquor when it has been run back into the immersion tank.
Patent GB-1022271-A (GB)
Title: Optical filters
Inventor: WARREN STANLEY WILLIAM
IPC: G02B5/28
Filed: 1963-04-04
Abstract: 1,022,271. Filters. STANDARD TELEPHONES & CABLES Ltd. April 4, 1963, No. 13386/63. Heading G2J. A transparent lens 12 or prism supports a filter 11, particularly for visible or infra red radiation, on one face, the lens 12 or prism being shaped so as to diminish the angle of incidence of radiation falling on the filter. A second lens 14 may be used in order to retain the original geometry of the light beam. An example of an infra-red filter is given having alternate layers of germanium and silicon oxide.
Patent GB-134204-A (GB)
IPC: E05B29/00
Abstract: 134,204. Husny, K. Oct. 19, 1918, [Convention date]. Night latches; lock mechanism, tumbler-type. -In a night latch, the bolt 6 is operated from outside by means of a sliding member 4 operable by a finger-piece 1 and normally locked by a series of tumblers 8. The slide 4 has a key-slot 18 into which a flat key may be inserted to set the tumblers 8 and free the slide, the key being then carried with the slide when this is moved to actuate the bolt. The slide is held in position within the casing 3 by means of the tumblers, the end of the slide having an abutment against which the end tumbler bears.
Patent GB-234510-A (GB)
Title: Improvements in and relating to automatic reclosing circuit breaker systems
IPC: H02H3/06
Filed: 1925-05-22
Abstract: 234,510. British Thomson-Houston Co., Ltd., (Assignees of Anderson, A. E.). May 24, 1924, [Convention date]. Cut-out systems.-In an automatically-reclosing circuit-breaker system of the kind in which successive reclosure is held up if a very heavy overload or short-circuit occurs, additional relays are provided which automatically re-introduce the automatic reclosing features when the short-circuit current is reduced. As shown, one overload relay 7 operates with delay action when an ordinary overload arises and a second relay 14 operates, instantaneously only in the event of a very heavy overload. The first relay 7 acts to close the tripping circuit 5 of the circuit-breaker 3 which, in assuming the off position, opens the actuating circuit of an auxiliary relay 11 which in assuming its off position closes contacts 26, 27, 28. This completes the circuit of the reclosing relay 8 through the closed contacts 32, 39 of a lock-out relay 12 in series with the contacts 35 of a notching relay 10. The relay 8 closes and completes the actuating circuit of a hesitating relay 9 which, in closing, completes the reclosing circuit of the reclosing coil 4. The relay 9 has a slow release to ensure that the reclosing circuit shall remain completed long enough to enable the circuit-breaker to close. The notching relay provides for reclosure a predetermined number of times after which further reclosure is precluded until the contacts 35 have been reclosed by hand. To deal, according to the invention, with very heavy overloads the instantaneous overload relay 14, an additional relay 16 with its operating winding connected across the voltage of the load, and the lock-out relay 12 are provided. In the event of such overload, the relay 14 closes as well as the relay 7, thereby connecting the operating winding of the lock-out relay 12 to the supply through the back contacts 24 of the circuitbreaker. The relay 12 is raised to the off position where it is automatically retained by the latch 13. In this position, the circuit of the reclosing relay 8 is open-circuited at contacts 39, 32 and the circuit-breaker cannot automatically reclose until the lock-out relay is released. This is effected when the voltage across the load is restored, that is when the short-circuit has disappeared, and is adequate to close the relay 29 thereby energizing the tripping magnet 17 through the resistance 30.