baber/WOPTO huggingface dataset:
Patent GB-1260237-A (GB)
Title: Improvements in or relating to ramp-type analogue-to-digital converters
Inventor: CLARK ROBIN GEORGE
IPC: H03K4/84
Filed: 1969-06-25
Abstract: 1,260,237. Transistor ramp and pulse generators. AVO Ltd. 24 June, 1970 [25 June, 1969], No. 31970/70. Heading H3T. [Also in Division G4] In an analogue/digital converter of the type in which a counter counts clock pulses until equality between an analogue input signal and a ramp signal, the ramp generator and clock generator consist of similar types of oscillator so that changes in the supply voltage or ambient temperature are compensated for. At equality of the ramp signal and analogue input at terminal 4 (Fig. 2) transistor Q4 in the comparator is rendered conductive to switch on transistors Q6, Q7 which result in a clock generator (comprising unijunction transistor Q10 and capacitor C3) being stopped after a delay determined by a capacitor C4 and resistor R8. Transistor Q4 also de-energizes transistor Q2 to introduce resistor R4 into the charging path of the ramp generator to slow its rate of increase and allow time for the count to be printed or displayed. When the ramp reaches the peak point voltage of programmable unijunction transistor Q3 capacitor C1 is discharged and a pulse is generated at the anode gate of transistor Q3. This pulse is fed to a monostable which resets the counter and holds it at zero for the duration of its output pulse. The ramp starts below zero potential, the starting voltage being set, in accordance with the delay introduced by the monostable, by a potentiometer. This ensures that the counter restarts its count as the ramp voltage goes through zero so that only the linear portion of the ramp is used. The delay comprising capacitor C4 and resistor R8 compensates for the fact that the comparator constitutes a load on the ramp generator and causes non-linearity of the ramp voltage.
Patent GB-742773-A (GB)
Title: Dry ore concentrating devices and methods
IPC: B03B4/00
Filed: 1953-11-18
Abstract: 742,773. Separating solid materials. DRYORE-CONCENTRATOR, Inc. Nov. 18, 1953 [Nov. 18, 1952], No. 31999/53. Class 117. In a separating process material, such as crushed ore, is conveyed along a horizontal path, the lighter particles being segregated by an upward air current through the path and movement of the heavier particles being blocked. As described, the material from the shoot 1, Fig. 2, passes over a magnetic separator 10, 13 to a hopper 11 and thence, through a control gate 25 to a horizontal surface 24 from which it is scraped by the bottom flights of a horizontal endless scraper conveyer 22. The conveyer operates in a trough 2, Figs. 2, 4, the bottom of which is divided into pockets 21, formed by lateral partitions 20, and closed at the bottom by perforated plates 3. The height of each plate 3 is independently adjustable by a rack and pinion 36, 38, provided with pointer and scale 4, 40, and moves with a lower plate 32 carrying air nozzles 33 fed from four separately adjustable air supplies through flared ducts 34, from a common header 52. Material reaching the end of the conveyer is scraped along a horizontal surface 6 into a vertical shaft 60 from which it may be diverted into any one of three ducts 7, 70, 71 by adjustable deflectors 61, 62. Dust may be removed from the top of the assembly by an upward air current in cowl 85 provided with adjustable louvres 88. The conveyer sprocket 8 is belt-driven from a motor 83 through variable-speed gearing 82. By adjustment of the depths of the pockets 21 and the air velocity therein various different separations may be effected and the pockets emptied individually by raising the bottom plate 3 to its uppermost position.
Patent GB-618160-A (GB)
Title: Improvements in end brackets for supporting tubular electric lamps
IPC: H01R33/08
Filed: 1946-10-29
Abstract: 618,160. Lamp-holders. REVO ELECTRIC CO., Ltd., and FELTON, A. E. Oct. 29, 1946, No. 32004. [Class 38 (i)] A holder for a tubular lamp comprises an insulating housing a in a socket a<1> in the front face of which a disc d is resiliently supported by leafsprings e. The front of the housing has two parallel slots a<2> communicating with tapered grooves d<1> on the face of the disc which terminate in holes d<2> into which the lamp pins snap after traversing the slots and grooves a2, d<1>. When located in the holes d<2> the pins engage sockets f<1> formed on the ends of leaf-spring contacts f located behind the springs e.
Patent GB-472209-A (GB)
Title: Improvements in hose supporters
IPC: A41F11/02
Filed: 1936-11-23
Abstract: 472,209. Hose - suspender grips. COTTRELL, H. T., ALEXANDER, J. M., and WATSON, J. C. Nov. 23, 1936, No. 32061. [Class 44] A hose-gripping device for suspenders comprises a plate 1 with slot 3, which may have teeth 4, for reception of the suspending tape &c., a wider slot 6, and depending arms 8 carrying a pivot bar 9 on which is mounted a member 14 with a hook-like tongue 15 and an elongated loop 12 through which bar 9 passes. Member 14 has pivotal and sliding movement so that it can be swung upwards to pass hook 15 into slot 6 and then slid downwards to engage the hook with cross-bar 7. Accidental sliding movement is prevented by an indented nib 16 or spring tongue past which the pivot bar 9 must be snapped in sliding from one end of the loop 12 to the other. The ends 10 of arms 8 are bent back on themselves to form thickened side guides for loop 12. A modification is described in which the nib 16 is replaced by a spring mounted within loop 12 and bearing against bar 9 to urge hook 15 downwards into engagement with bar 7. Fig. 9 shows a modification in which the tongue 15 is formed by bending the end of member 14 and member 1 has slots 3 at top and bottom to receive a loop 22 of fabric to keep the metal from contact with the wearer, the upper slot also receiving the suspending tape 21. Alternatively, the suspending tape 21 may be threaded through both slots 3 to provide the protecting layer of fabric.
Patent GB-1526170-A (GB)
Title: 3-(5,6-dihydro-4h-1,3-thiazin-2-yl)-3-nitro-2-propenoic acid and its use as an insecticide
IPC: A01N43/86
Filed: 1977-08-01
Abstract: 1526170 3 - (5,6 - Dihydro - 4H - 1,3- thiazin - 2 - yl) - 3 - nitro - 2 - propenoic acid SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 1 Aug 1977 [2 Aug 1976] 32184/77 Heading C2C The novel compound, 3-(5,6-dihydro-4H-1,3- thiazin-2-yl)-3-nitro-2-propenoic acid, having the formula may he used as an insecticide either alone or in conjunction with a carrier and/or a surface active agent.
Patent GB-1046036-A (GB)
Title: Transmission device for an engine cooling fan
Inventor: HARRISON ALAN EDWARD
IPC: F01P7/08
Filed: 1962-08-22
Abstract: 1,046,036. Controlling friction clutches. SPECIALLOID Ltd. May 1, 1963 [Aug. 22, 1962; Dec. 11, 1962], Nos. 32199/62 and 46665/62. Headings F2C and F2L. [Also in Division F1] The driven member 5 of a centrifugal clutch 4 in an engine cooling fan drive is provided with braking means 13 actuated when the engine temperature falls below a predetermined value. The clutch is of the lead shot type having a driven member 1 with a bladed member 4 moving in the lead shot chamber of the driven member 5. The brake band 13 may be applied directly by a thermostat or indirectly through a solenoid or through devices actuated by lubricating oil or cooling water pressure.
Patent GB-1428096-A (GB)
Title: Method for the prevention of the deposition of lime from water
IPC: C02F5/08
Filed: 1974-06-28
Abstract: 1428096 Preventing deposition of lime from water LONZA Ltd 28 June 1974 [3 July 1973] 32247/75 Divided out of 1428095 Heading C1C A method for preventing the deposition of lime from water comprises adding nicotinic acid in tablet form to the water. The tablet may also contain 0-05 to 1%, based on the weight of the tablet, of a urea-formaldehyde  condensation product.
Patent GB-481684-A (GB)
Title: Improvements in or relating to ignition devices for gas heated appliances
IPC: F24C3/10
Filed: 1936-11-26
Abstract: 481,684. Igniting gas burners. DARBY, H. G. Nov. 26, 1936, No. 32358. [Class 75 (iii)] A flash-back tube 8 for igniting the burner 6 of a gas-heated appliance from outside the heating chamber 7 is supported on the wall of the latter in such manner that its inner end 10 can be moved into an operative position above the burner or an inoperative position clear of the burner flame. As shown, the tube 8 is carried by a bracket 15 on a pivoted closure plate 12 for an arcuate slot 11 so that the plate 12 can be swung upwardly to bring the outer end of the tube into register with the slot, and the inner end 10 over the burner. Alternatively, the tube 8 may be carried by an arm mounted within the heating chamber on a spindle provided with an external operating knob. The device may be returned to the inoperative position by gravity or a spring. In modifications, the closure plate may be vertically slidable or hinged for movement at right-angles to the wall of the heating chamber.
Patent GB-1066575-A (GB)
Title: Method of and apparatus for filling liquids into containers
IPC: B67C3/22
Filed: 1964-08-10
Abstract: 1,066,575. Filling containers. JAGENBERGWERKE A.G. Aug. 10, 1964 [Aug. 13, 1963], No. 32421/64. Heading B8T. In a method of filling fruit juices &c. into containers, to prevent oxidation a cushion 11 of inert gas, e.g. carbon dioxide, is produced at the bottom of the container and the liquid introduced through this cushion, the cushion being maintained above the liquid surface by continued feed throughout filling, and rising with the rising liquid level. A filling tube 2 with a surrounding annular gas conducting member 6 is lowered into a container 10 and a duct 8 connecting the annular space 7 to a gas source is opened to produce the gas cushion 11. Liquid 12 is then introduced, the tubes 2 and 6 being moved upwards so that the member 6 is held at a constant distance from the rising liquid level; and the gas supply is continued after filling until the outlet of the member 6 reaches the top of the container. The container is then introduced into a heating rail and closed by pressure tools.
Patent GB-624015-A (GB)
Title: Improvements in or relating to alkyl esters of alpha-beta unsaturated carboxylic acids and method of preparing same
IPC: C07C69/54
Filed: 1946-11-01
Abstract: Alkyl esters of a -, b -unsaturated carboxylic acids are prepared by reacting a dialkyl sulphate with a b -lactone having at least one hydrogen atom connected to the a -carbon atom and which may carry other substituents.  Preferably equimolecular proportions of reactants are used and the temperature is maintained below 30 DEG  C. suitably between -30 DEG  and 10 DEG  C.  The reaction may also take place under reflux in a solvent. b -Propiolactone is the preferred b -lactone, but lactones of the higher homologues may also be used.  In examples, b -propiolactone is treated with dimethyl sulphate to give methyl acrylate and b -propiolactone is treated with ethyl sulphate to give ethyl acrylate.  Corresponding derivatives are formed by replacing the above dialkyl sulphates with diisopropyl sulphate, dibutyl sulphate, diamyl sulphate or di-n-octyl sulphate. Specification 654,251 is referred to.  The Specification as open to inspection under Sect. 91 comprises also the use of cycloalkyl, aryl and aralkyl substituted b -lactones; the b -lactones of unsaturated b -hydroxy carboxylic acids; mono- and di-lactones of dicarboxylic acids and lactones containing nitrogen, sulphur, oxygen or halogen atoms, e.g. a - or b -nitrophenyl b -propiolactone, b -(o-nitro-m-chlorophenyl)-b -propiolactone, b -(o-nitro-m-methoxyphenyl)-b -propiolactone, a -hydroxy-b -phenyl-b -propiolactone and a -chloro-b -propiolactone.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1131535-A (GB)
Title: System for night aerial photography
Inventor: WIELAND ERNST
IPC: G03B15/00
Filed: 1967-07-14
Abstract: 1,131,535. Towed aircraft. DORNIER SYSTEM G.m.b.H. 14 July, 1967 [3 Sept., 1966], No. 32572/67. Heading B7W. [Also in Division G2] In aerial photography a camera carried by one aircraft is synchronized with a flashlight device carried by a second aircraft, which may be a flying device towed by the first aircraft. The synchronization may be by photo-electric means or by means of a circuit incorporated in the tow rope. The flashlight may be of the electronic type, and power may be supplied by a ram air turbine on the towed aircraft. Two towed flying devices may be employed, thereby enabling either the intensity or the frequency of the flashes to be doubled. The towed devices may be mounted below the wings of the first aircraft and run out by winches when required for use.
Patent GB-824718-A (GB)
Title: Arrangement for the intermittent drive of a shaft through a continuously rotating member
IPC: F16H27/10
Filed: 1957-10-21
Abstract: 824,718. Starting and stopping machinery; friction gearing. DE LENS, E. J. Oct. 21, 1957 [Oct. 29, 1956], No. 32790/57. Classes 80 (1) and 80 (2). A constantly rotating roller is pivotally mounted to engage the non-circular periphery of a driven wheel and is arranged to be moved away from the wheel before application of braking means on a large radius section of the wheel. An elastic roller 5 driven constantly by a motor 7, pivoted at 8, can be moved into frictional engagement with the rim 3 of a flywheel 2 rigid with a driven shaft 1. The rim 3 is formed of sectors of different radii, at point A the rim being of minimum radius increasing from A to the maximum at B which is retained to D and then decreases to the minimum at E which is retained to A. Also pivoted at 8 is a control lever 9 having an extension 15 carrying an elastic stop 16 which can engage a projection 20 carried by the flywheel, when the lever 9 rests against a stop 10. The lever 9 is also connected with the motor support by a spring 12, relative movement being limited by a stop 13. A brake 21 is pivoted at 23 and subject to the action of a spring 24, the brake being restrained by a stop 25 such that it can only engage the larger radius portion of the flywheel 2. In operation, a pull on a linkage 14 moves the lever 9 to rest on stop 11 and to load the spring 12 to swing the roller 5 into contact with the flywheel 2 at A, at the same time the stop 16 is released. The flywheel rotates at increasing speed until the maximum radius point B is reached, the increase in radius stressing the spring 12 such that if the linkage 14 has been released the lever 9 rests on stop 10 and the stop 16 moves into a position to engage the projection 20. When the roller 5 reaches the commencement of the section C the brake 21 engages the section B of maximum radius and commences to slow the flywheel when the roller reaches the section of decreasing radius. At D the roller ceases to drive the flywheel which is retarded by the brake 21 until the stop 16 meets the projection 20 when the flywheel is stopped. If the linkage 14 is not released the roller 5 continues to drive the flywheel at varying speeds as the stop 16 cannot engage the projection 20 and the spring 12 is stressed sufficiently to allow the roller to drive over the whole periphery of the rim. The rim may be profiled to provide more than one cycle per revolution.
Patent GB-810188-A (GB)
Title: Improvements in or relating to grinding wheels and to processes for the production of grinding wheels
IPC: B24D5/14
Filed: 1957-10-22
Abstract: 810,188. Grinding wheels. WAGNER & ENGLERT G.m.b.H. Oct. 22, 1957 [Oct. 22, 1956], No. 32949/57. Class 60. A grinding wheel consists of inner and outer annular zones arranged concentrically with a bore 5, the outer zone 1 having the full thickness of the wheel and the inner zone comprising a number of thinner portions, e.g. two portions 2, 3 with a separating member 8. When the wheel has worn down to the diameter of the inner zone, the latter can then be separated into two small wheels. In making the wheel, the space between outer and inner annular frames is filled with a mixture of abrasive and bond suitable for a large diameter wheel, and the space between the inner frame and a core for the bore is partly filled with a mixture of abrasive and bond suitable for a small diameter wheel, the deparating member is placed in position, and the remaining space is filled with more of the latter mixture. The mixtures differ in abrasive grain size and/or in harshness of bond.
Patent GB-632478-A (GB)
Title: Improvements relating to electric battery lamps
IPC: F21L4/00
Filed: 1947-12-15
Abstract: 632,478. Electric battery lamps LUCAS, Ltd., J., and WOOD, J. L. Dec. 15, 1947, No. 32967. [Class 39(ii)] In an electric battery lamp, more particularly for bicycles, of the kind provided with a body or housing for a battery, and a bulb-holding part rotatable relatively thereto for switching purposes, a rotatable head c enclosing the bulb k and reflector e is provided with an insulating disc g formed with arcuate slots i to receive rivets or screws h secured on the face of the body portion a, and the bulb holder j is secured at the centre of the insulating disc by radial projections m, n which co-operate with the body a to complete the lamp circuit when the head e is rotated within the limit imposed by the arcuate slots. The radial projections m, n comprise flat tongues which in the "off " position, lie within gaps in the metal of the body a, and make frictional contact with the metal when the head c is rotated. To prevent the entry of rain between the body a and rotary head c the former is provided with an annular projection t fitting closely against the head.
Patent GB-268431-A (GB)
Title: Apparatus for applying coatings or deposits of fusible substances to surfaces
IPC: B05B7/20
Filed: 1925-12-31
Abstract: 268,431. Metallisation, Ltd., and Cozens, F. G. Dec. 31, 1925. Burners, mounting.-In an apparatus for carrying out the process described in Specification 28001/12 and more particularly of the kind described in Specification 25132/13, the driving mechanism and the spraying nozzle are mounted on opposite ends of a column and the nozzle is pivotally mounted so that it can be adjusted relatively to the axis of the column up to an angular extent of about 180‹ without interfering with the feed of the substance to be sprayed. The roller case A forms with the nozzle B a radial head which is pivotally attached to the upper part of the worm case F by a bolt 1 secured in position by a nut 2. The case A is provided with feeding wheels or rollers 3, 4 for the substance 5 to be sprayed. The air is passed through a connection 21 and the gases through connections 20,22 and both pass through a controlling valve D and then through outlets 23 - - 25 and flexible extensions to connections 26 - - 28 leading to the rozzle B. The gase from the connections 26, 28 pass through passages 30 into the mixing chamber of the nozzle, the air passing into this chamber through holes communicating with a small annular recess formed between the adjoining faces of the nozzle B and the head A which are secured together by a bolt, the air flowing from the connection 28 by holes 32, 33 into this recess.
Patent GB-290527-A (GB)
Title: An improved method of and apparatus for sight testing
IPC: A61B3/06
Filed: 1927-12-06
Abstract: 290,527. Brown, S. C. Dec. 6, 1927. Sight-testing apparatus.-Comprises a method of and apparatus for sight-testing in which advantage is taken of the chromatic aberration of the eye. A test object is utilized, part of which is illuminated by coloured light having a certain dominant wave length, and the other part of which is illuminated by coloured light having a wave length differing from that of the previous coloured light. In a normal unaccommodated eye the images of the object will be formed one part in front of and the other part behind the retina, appearing equally sharp. A number of fixed groups of radiating lines or slots a - - g are arranged around a central group b, which is capable of rotation in its own plane, and one half of each group is backed with one colour screen, e.g, green, and the other half of each group with another colour screen, e.g. red. Lenses are placed before the eyes of the patient until each half of every group appears equally distinct. The rotatable group h is utilized to determine the meridian of any astigmatic correction necessary.
Patent GB-374778-A (GB)
Title: Improvements in and connected with window cleaning apparatus
IPC: B60S1/34
Filed: 1931-11-28
Abstract: 374,778. Window-cleaning apparatus. HANDRAHAN, J. E., 21, Montgomery Street, Hove, Sussex. Nov. 28, 1931, No. 33029. [Class 138 (i).] A window-cleaning device comprises a pair of rotary screws 3, 4, arranged along opposite edges of a window 1 and having threaded on to them nuts 14 provided at the ends of a wiper 13, the screws being simultaneously rotated from an electric motor 12 to move the wiper across the window. A commutator 18, Fig. 3, provided in conjunction with the motor is driven by a clock 15 adapted to reverse the direction of the flow of the current to the motor when the wiper reaches either end of its travel, means also being provided to produce a prolonged idle period before the wiper commences to move in the reverse direction. For this purpose, the commutator carries a pair of insulated conductors 19, 20, which are so dimensioned that they remain in contact with pairs of contacts 22, 23, 25, 26, for a sufficient period to enable the wiper to traverse the window once and then require a fair period of time before they travel to the other pairs of contacts 27, 28, 29, 30 to effect a reverse travel to the wiper.
Patent GB-637562-A (GB)
Title: Improvements in and relating to self-locking devices
IPC: F16B37/02
Filed: 1947-12-15
Abstract: 637,562. Locking nuts. GULLBRANTZ, H. Dec. 15, 1947, No. 33031. Convention date, July 20, 1942. [Class 89 (i)] A self-locking nut is made from spring steel with a tubular threaded part 1 connected with a polygonal flange 3 by a conical part 2.
Patent GB-1097017-A (GB)
Title: Improvements in control systems
Inventor: STEPHENS ARTHUR VERYAN
IPC: G05G19/00
Filed: 1964-08-13
Abstract: 1,097,017. Aircraft controls. SHORT BROS. & HARLAND Ltd. Aug. 3, 1965 [Aug. 13, 1964], No. 33062/64. Heading B7G. [Also in Division G4] A manually operated mechanical control system comprises input and output members 15, 31 and a feedback path including a differencing mechanism and an integrator, arranged so that displacement of the input member produces an initial proportional displacement of the output member, which is then reduced to a lower proportional displacement. The system is intended for use in vertical take-off aircraft for attitude control by variation of the thrust and nozzle angle of direct lift engines, the variation of control displacement with time simulating damping. The integrator comprises a constant speed electric motor 27 driving a part-spherical rotor 25 frictionally engaging a wheel 24. The motor is tilted by a link 30 which with a lever 16 acts as the differencing mechanism. The wheel 24 is fixed to a screw 21 engaging a unit 18 and hence the rotation of the wheel causes translation of the fulcrum 17 of the lever 16, and this movement is proportional to the integral with respect to time of the displacement of the link 30.