baber/WOPTO huggingface dataset:
Patent GB-315519-A (GB)
Title: Improvements in two stroke cycle internal combustion engines
IPC: F02B25/00
Filed: 1928-05-22
Abstract: 315,519. Tomanovich, J. May 22, 1928. Starting. - In a two-stroke engine cylinder, a pressurerelease valve 6 acting as a starting,carburettor is provided with a fuel orifice 20 in its seating, the fuel supply being regulated by a valve 21. A valve 16 is operated to cut off the supply of scavenging air at starting.
Patent GB-110572-A (GB)
Title: A Mechanical Appliance for Automatically Shutting Off the Supply of Gas, and/or Switching Off Current of Electricity at any desired Time.
Inventor: BROUCHER DAVID
IPC: F23Q9/02
Filed: 1916-10-23
Abstract: 110,572. Broucher, D. Oct. 23, 1916. Clockwork-actuated valves.- Relates to clockwork apparatus for automatically switching off at any desired moment of time a supply of gas or electricity or both in which a spring-urged lever B on the spindle of a gas cock a, or electric switch E. d<1>, or both, normally rests on a graduated time disk G on a clock-urged spindle f. The disk G has a concave cut-away portion g<2>, g<3> of large radius which instantly releases the lever B after the desired lapse of time. The disk G is adjustably secured on the clock spindle f by means of milled-head set-screws g'.
Patent GB-1322668-A (GB)
Title: Temperature responsive switches
IPC: H01H37/48
Filed: 1971-05-14
Abstract: 1322668 Temperature responsive switches BROWN BOVERI & CIE AG 14 May 1971 [5 June 1970] 15038/71 Heading H1N A thermally operated switch or the like includes a temperature responsive expansion element 1 acting through a lever 5 upon a switching device 4, the lever 5 being of pressed metal and being pivoted on a knife edge bearing both parts 8, 9 are formed by stamping operation. The element 1 in the form of a rod or tube or a fluid filled chamber (not shown) is affixed to a plate 2 one end of which is bent up at an obtuse angle; a hole is punched out and provides a knife edge 8. The lever 5 has one end bent down and formed to provide a groove 9 cooperating with the knife edge 8. The snap acting switching device 4 is provided with an adjusting screw for temperature settings. Alternatively a manually adjustable member may act at the point 10 (not shown). The plate 2 may be omitted and a part bent up from the housing to form the knife edge.
Patent GB-344292-A (GB)
Title: Improvement in the manufacture of aluminium by electrolysis
IPC: C25C3/06
Filed: 1930-05-16
Abstract: According to the Specification as open to inspection under Sect. 91 (3) (a) aluminium fluoride is heated with sodium or potassium chloride to form the double flouride and either aluminium chloride or, when air or water is present, aluminium oxide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1382861-A (GB)
Title: Benzotriazole derivatives their use as photographic colour couplers  and photographic materials containing them
IPC: G03C7/32
Filed: 1972-03-30
Abstract: 1382861 Benzotriazole derivatives EAST-  MAN KODAK CO 30 March 1972 [6 April 1971] 15097/72 Heading C2C [Also in Division G2] Novel photographic colour couplers containing at least one group of the formula attached directly or via a bridging group to a coupling or non-coupling position on the coupler moiety, the group of Formula I together with its bridging group being capable of splitting off during colour development if attached to a coupling position, wherein R<SP>1</SP>, R<SP>3</SP>, R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP> and R<SP>8</SP> are each hydrogen or halogen atoms or an alkyl, alkenyl, hydroxy, amino, substituted amino, sulpho, carboxy, alkoxy, alkylthio or acyloxy group or an aryloxy or arylthio group of which the aryl may be substituted or an oxygen- or nitrogen-containing heterocyclic group, R<SP>2</SP> may have any of the meanings given for R<SP>1</SP> when attached in the position ortho to the hydroxy group or, when in the para position, it may be an alkyl, cycloalkyl or aryl group, are prepared by conventional methods. The products also act as U.V. absorbers.
Patent GB-1533411-A (GB)
Title: Fuel control system for gas turbine engine
IPC: F02C9/32
Filed: 1975-04-12
Abstract: 1533411 Automatic control of fuel flow LUCAS INDUSTRIES Ltd 5 March 1976 [12 April 1975] 15116/75 Heading G3R A fuel supply system for a gas turbine engine includes a fluidic oscillator device including hot element apparatus for producing a signal whose frequency represents the rate of fuel flow to the engine and has a spill valve connected to the input of the oscillator for controlling the fuel flow in response to a signal derived from the speed of the engine. As shown the known type of fluidic oscillator 14 has a first hot wire of foil apparatus 32 situated in one of its branches 19 and provides a signal corresponding to fluid-flow. A filtered supply of fuel is drawn off through passages 28, 29, 30 past another measuring apparatus which provides a signal on line 37 corresponding to the flow of filtered fuel. Summing amplifier 38 produces an output which is the difference between the two flow signals and represents the fuel flow to the engine. A control circuit 45 responsive to the speed and other operating parameters of the engine and to the position of throttle 46 provides a desired fuel flow signal to controller 44 which operates actuator 42 to adjust the position of spill valve piston 41 and thus control the quantity of fuel delivered to the engine from pump 11. The actual flow signal on line 39 may operate a display 51 which can include and integrating circuit to provide a total fuel consumption reading.
Patent GB-1261916-A (GB)
Title: Method and apparatus for forming articles e.g. pneumatic tyres
Inventor: BULLIVANT EDWARD GEORGE
IPC: B29D30/06
Filed: 1968-03-29
Abstract: 1,261,916. Moulding plastic material. DUNLOP HOLDINGS Ltd. 26 March, 1969 [29 March, 1968], No. 15165/68. Heading B5A. In a method of forming an article on a sup - porting member provided with a flexible boundary wall, the wall is shaped to the desired configuration and made firm, whilst the article is formed, by the juxtaposition of a material which is rendered solid, and in order to separate the formed article from the member the material is rendered fluid. The material may comprise a low melting point metal or metal alloy, a thermoplastic resin or a wax. Alternatively it may be a fluid and solid particle mixture; the particles may be magnetizable and subjected to a magnetic field whereby the material becomes substantially solid. Fig. 1 shows apparatus for forming a tyre, and includes dies 34, 34 brought together to shape an annular core comprised by a flexible rubber diaphragm held between a fixed cap 6 on a pillar 3 and a cap 5 slidable on the pillar. A green tyre carcass 22, or a worn tyre which has been buffed, is placed around the diaphragm and the diaphragm interior is supplied with molten bismuth metal alloy via a piston and cylinder (12, 15), Fig. 2, not shown, and pipe 18, and the alloy is solidified by the feeding of cooling fluid by a pipe 21 into the pillar interior. The dies 34, 34 are replaced by dies 2, 2 providing a chamber 23 into which a curable elastomeric substance is injected through ports 4 to form the tyre tread and sidewalls One or more reinforcing layers may be positioned around the carcass before the injection. After the tyre has set, the alloy is melted by feeding heating fluid through the pipe 21. In a modification, Fig. 6, not shown, the core is formed by two coaxial flexible diaphragms (24, 25) encircling a solid filler (3) supplied with molten metal alloy through a port (29); heating and cooling fluid is supplied through ports (31). In a second modification, Fig. 8, not shown, a flexible hose (32) is contained within the diaphragm interior and encircles and connects with the pillar so that heating or cooling fluid may flow therethrough.
Patent GB-449282-A (GB)
Title: Overfeed stoker
IPC: F23K3/00
Filed: 1935-05-24
Abstract: 449,282. Pneumatic conveyers. IRON FIREMAN MANUFACTURING CO., 4784, Southeast 17th Avenue, Portland, Oregon, U.S.A. May 24, 1935, No. 15194. Convention date, May 6. [Class 78 (i)] [See also Groups XI and XII] In stoker apparatus in which coal is fed pneumatically along a conduit and delivered through nozzles on to a furnace grate, the outlet from the blower supplying the carrier air is connected laterally at an angle with the conduit at a point where the fuel is also fed into the conduit. Fuel from a hopper 20 is fed by a screw 22 into a transfer box 29, Figs. 1 and 4, from which it is conveyed along the conduit 34 to the furnace by air from a blower 25 and duct 26, the air entering the box laterally through an opening 30 in the top. A vane 33 at the end of the screw 22 serves to agitate the fuel and lift it into the air stream. At the furnace end of the conduit 34, the fuel and air stream is divided by an adjustable vane and enters two pipes 43 leading to nozzles 55 which deliver on to the grate 38. The blower 25 is driven bv a motor 23 at definite time intervals under the control of a timing device 98. A blower 100 supplying primary air to beneath the grate is controlled by a thermostat or pressure regulator 102. In a modification, the blower outlet has a damper connected to a plunger operated by the air pressure so as to increase the air supply in the event of clogging occurring in the fuel conduit. If with the damper full open the clogging persists and the air pressure therefore still rises, the plunger lifts a contact and stops the fan motor. If the conveyer conduit is bent, as at 40, Fig. 6, an agitator in the form of a flexible helical strip 42 may be attached to the vane 33 of the screw feeder. The air duct between the blower 25 and the transfer box 29 may include a revolving damper 77, Fig. 14, driven by a belt 80 from the shaft of a toothed agitator 83 within the hopper 20 and meshing with the screw feed worm 22. The damper can only partially close the duct and produces a surging action which varies the distribution of the fuel ejected from the nozzles. Fig. 11 shows one form of fuel delivery nozzle having a rectangular outlet 61, divided by a fixed or adjustable member 62 and having also adjustable deflectors 63 with ends 64 bent downwards in front of the outlet. The positions of the fuel supply, nozzles in various furnaces as shown. In one the delivery is from two nozzles 53 in the bridge and from one 55 in each side wall. In another form the fuel is admitted from forwardly directed nozzles arranged above the bridge.
Patent GB-274621-A (GB)
Title: Improvements in screen wipers for motor vehicles and like purposes
IPC: B60S1/18
Filed: 1926-06-16
Abstract: 274,621. Clapham, C. F. June 16, 1926. Windows and the like, cleaning. - A metal casing 1<a> is secured to each side of the screen and encloses an endless chain 35 on sprockets 36, 37 one of which is driven, through worm gearing and a flexible shaft, from an electric motor or moving part of the vehicle. The wiping element 20 is secured to a tubular member 22 extending across the screen and provided at each end with a plug 23. Each plug accommodates a spindle 25 extending from a double cam-like member 26 adapted to slide in a slot 27 in the side of the casing 1<a>. A spindle extending inwardly from the member 26 carries a member 12 with two arms one of which carries a spring-pressed pad 12a adapted to engage the side of the casing 1<a>. The other arm carries a pin 39 adapted to be engaged by a projection 38 attached to the chain 35. The path of travel of the chain is as shown, so that the pin 39 and projection 38 are disengaged as the projection approaches either sprocket wheel and re-engaged as it moves away from the wheel. The wiper is thus given a reciprocating movement. The frictional engagement of the pad 12<a> with the side of the casing causes the wiper member to rock slightly at each change of direction of motion, whereby the wiping element 20 engages the screen only when descending.
Patent GB-197631-A (GB)
IPC: B23F23/12
Filed: 1922-05-30
Abstract: 197,631. Lees-Bradner Co., (Assignees of Schurr, C. H.). May 15, 1922, [Convention date]. Gear-cutting.-In a machine for generating gear teeth by grinding, the tool is carried by a spindle mounted in bearings in a tubular member which is slidably adjustable in a hollow arm rotatable about an axis parallel to the work axis. A device for trueing the operative surface of the grinding disc is also provided. The main frame 1 supports a column 2 carrying a vertical slide 5 adjustable by screw-and-nut mechanism operated from a spindle 15 and carrying a swivelling head 23 rotated by worm gearing from a spindle 26. The swivelling head comprises a hollow arm 23<b> carrying a tubular member 29 which is fitted with anti-friction bearings 31 carrying the tool spindle- 30. The latter is rotated by means of a pulley 32 driven from the main driving shaft 36 by means of a belt passing over guide pulleys as shown in Fig. 2. The grinding 'disc A having a plane annular operative face a is held between plates 39, the inner plate being provided with a hub keyed to the spindle 30 which is held against axial movement in the member 29 by a cap 44. The disc is enclosed by a casing 49 which is cut away to allow the disc to engage the work. The member 29 may be moved axially to adjust the grinding disc by screw-and-nut mechanism 53, the nut being in two parts to provide adjustment for wear and being rotated from a shait 55<a> carrying a disc 56a which may be detachably connected by ratchet-mechanism to a hand-wheel 56. In order to adjust the depth of cut of the grinding disc the hand-wheel is provided with a number of gauge-pins 57<b> which may coact with a spring pressed pin 58. The member 29 is locked against rotary movement bv means of longitudinal grooves coacting with pins passing through the arm 23<b>. The face of the grinding disc may be trued by means of a diamond, the casing 49 being cut away to allow the positioning of the trueing device. Specification 197,652 is referred to.
Patent GB-1015862-A (GB)
Title: Improvements in and relating to electric indicating, measuring or control apparatus
Inventor: SMITH PETER HAROLD
IPC: G08C19/12
Filed: 1962-04-19
Abstract: 1,015,862. Determining moisture content. FIDELITY CARS Ltd. April 18, 1963 [April 19, 1962], No. 15269/62. Heading G1N A device for measuring moisture content includes a test capacitor 10, Fig. 3, located in the frequency determining circuit of an oscillator 11 and means for measuring the resultant frequency, the test capacitor including in its dielectric a sample of the material being tested. A cell 14, similarly affected by temperature and other variations is included in the circuit of an oscillator 12 and a signal having the difference frequency is produced in a mixed stage 13 including transistor 33, and transmitted via a coaxial cable 41, emitter follower 15, and amplifier 16 to a Schmitt trigger circuit 17 which produces a rectangular waveform of the same frequency. A bi-stable multi vibrator 18 then produces an output of half the frequency, the amplitude of which is limited by zener diodes 70, 72 of a limiter 20 and a signal of amplitude proportional to the pulse repetition rate is developed in the load circuit of transistor 75 for application to indicator 23. A switch 5 is provided for calibration and monitoring. The measuring cell preferably comprises plane strips in an insulating block over which the sample passes.
Patent GB-312358-A (GB)
Title: Improvements in or relating to arc welding
IPC: B23K9/073
Filed: 1929-05-16
Abstract: 312,358. Elin Akt.-Ges. fiir Elektrische Industrie. May 25, 1928, [Convention date]. Regulation, automatic; dynamos and motors combined for transmitting power; supplying consuming devices.-In an arc welding system wherein the electrode feed motor 7 is controlled according to the arc voltage the armature of the motor is fed by a control generator 10 the excitation of which is varied automatically in opposite senses according to whether the arc voltage is too high or too low. The generator has opposed field coils 11, 12, in series with resistances 17 and 18 respectively. The resistance 17 is short-circuited bv the regulator 16 according to whether the arc voltage is above 16 volts or below 6 volts respectively. The generator and motor field coils are fed by an exciter 13 arranged on a common shaft with the generator and a driving motor 26. Specifications 113,827, 202,063, and 259,615 are referred to.
Patent GB-883869-A (GB)
Title: Power transmission system for a helicopter
IPC: B64C27/14
Filed: 1959-05-05
Abstract: 883,869. Helicopters. UNITED AIRCRAFT CORPORATION. May 5, 1959 [Aug. 28, 1958], No. 15333/59. Class 4. A power transmission system for a helicopter comprises at least one gas turbine engine including an engine drive shaft and at least one rotor and its associated rotor drive shaft, accessory drive means for operating, the helicopter accessories, said accessory drive means being adapted to be driven by said engine through first connecting means when said rotor drive shaft is not being driven by said engine, and said accessory drive means being adapted to be driven by said rotor drive shaft through a second connecting means when said rotor drive shaft is driven by said engine. Engine 4 connects with shaft 16 through gear 58, freewheel device 62 and gears 60, 48, 52 and 54. Engine 6 connects through gear 36 and gears 38 and 42, both mounted on one end of an accessory drive shaft 40, a manually controllable free wheel device 44 and gears 48, 52 and 54. Shaft 40 carries at its other end a gear 68 and a freewheel device 70 forming part of an accessory drive gear train, Fig. 5, in which is coupled also to tail rotor drive shaft 32 driven through gear 54. The accessory gear train comprises, in mesh with gear 68 a pair of gears 82, 86, gear 82 meshing through a gear 78 with a gear 72 mounted by a freewheel device 76 on tail rotor drive shaft 32. A further gear 74 fast with gear 72 is mounted by freewheel 76 on shaft 32 for engagement with further gears 90, 94, the former driving a gear 92. A gear 102 fast with shaft 32 meshes with a gear 104 which, through shaft 106, drives a tachometer. Gears 82 and 86 drive generators and gears 78, 90, 92 and 94 drive pumps. In operation, a lever 46 may be operated to place freewheel 44 out of engagement so that engine 6, when started, will drive shaft 40 through gears 36, 38, which in turn will drive gear 68 through freewheel 70, thereby driving gears 82, 86 and 78 and the associated generators and pumps. The drive through gear 78 to gear 72 does not rotate shaft 32 because of freewheel 76, but it does drive gear 74 and, in turn, gears 90 and 94 to operate the associated pumps. When engine 4 is started, it drives the rotor shaft 16 and tail rotor shaft 32 and as the speed of the latter becomes greater than the speed of gears 72 and 74, the drive is taken by shaft 32 through freewheel 76. Since gear 72 drives gear 78 the drive is taken through gear 82 to gear 68, but because of freewheel 70 no drive is transmitted to shaft 40. If it is desired to connect engine 6 to the rotor drive, the speed of engine 6 is co-ordinated with the speed of engine 4 and lever 46 moved manually or automatically to the freewheel engaging position. Specifications 734,450 and 753,970 are referred to.
Patent GB-240519-A (GB)
Title: Improvements in or relating to devices for displaying advertisements or the like
IPC: G09F21/04
Filed: 1924-06-25
Abstract: 240,519. Egan, T. A. June 25, 1924. Elements moving always in one plane, rotating and oscillating; actuating.-In advertising, route indication, notice and like devices, of the type comprising two relatively movable plates having perforations which are brought into and out of register, the plates 2, 5 are provided with dark coloured surfaces and backed by a light-coloured screen 3 so that the legend &c. will be visible either by reflected or transmitted light when the perforations are in register. Lamps 4 may be provided at the rear to illuminate the light-coloured screen 3. The plate' 5, which may be arranged in front of or behind the plate 2, may rest on rollers 7, and move by the swaying of a vehicle on which the sign is carried. Alternatively the movement may be produced manually or by a cam 11 rotated by a motor or by a moving part of a vehicle. The plates 2, 5 may have two sets of perforations to display different legends, and the perforations may be oval, rectilinear, or of other shape.
Patent GB-544590-A (GB)
Title: Improved cutter
IPC: B23D29/02
Filed: 1940-10-17
Abstract: 544,590. Shears. PINFOLD, W., and GERRARD INDUSTRIES, Ltd. Oct. 17, 1940. No. 15398. [Class 30] A cutter for bale tie straps and wires has a lower jaw 1 adapted to pass under the strap, a shearing notch 12 for wires and an upper blade 5 for straps, the handle 4 being upswept to provide room for the operator's hand. The jaw has a broad flat and tapered base carrying a shearing blade and a backing ridge. The upper jaw 5 is pivoted between the cheeks 3 and has a pin-and-stot connection 7 with the upper handle 9. The handles 4, 9 are pressed apart by a spring 11 and a finger 17 and bail 18 are provided for keeping the tool closed.
Patent GB-258524-A (GB)
Title: Improvements in or relating to dirigibles
IPC: B64B1/00
Filed: 1925-06-17
Abstract: 258,524. Valkenberg, E. H. van. June 17, 1925. Aerostats; cars and cabins.-An airship has inner and outer shells 1, 2 secured to longitudinal beams 3<1> to form an airspace, and the inner shell is divided into gas compartments by transverse plates secured to rings 4 which are braced as shown in Fig. 2. A longitudinal passage 5 extends along the keel through the transverse plates from one end of the airship to the other, giving access to axially-arranged engine rooms at each end of the airship. Spring-pressed valves 13 in the passage 5 to enable gas to be introduced into each compartment and any displaced air escapes through manually closed valves 14. A longitudinally adjustable car 28, Fig. 3, a central cabin 21 and an upper cabin 17 are provided, a vertical stairway 20 giving access to the upper cabin. The bracing for the rings 4 comprises radial members 22 with overlapping V-shaped stays 24 at their outer ends, an inner brace ring 25 to which toggle braces 27 are secured, and members 26 secured to the radial members and supporting the inner ends of the toggle braces. The longitudinal beams 3<1> are secured to vertical end plates. A valve 9 is provided on each gas compartment.