baber/WOPTO huggingface dataset:
Patent GB-1068170-A (GB)
Title: Rotary piston machines
IPC: F01C1/077
Filed: 1963-12-30
Abstract: 1,068,170. Rotary-piston machines. AERO-COMMERCE G. m. b. H. Dec. 30, 1963 [Jan. 22, 1963], No. 51243/63. Heading F1F. [Also in Division F2] A rotary-piston engine of the intermittentabutment type comprises a stationary cylindrical housing (1), Figs. 1, 2, 4, 6 and 8 (not shown), containing two rotors mounted on coaxial rotatable shafts (7, 8) respectively, which are connected to a common output shaft (19) by oval gear-wheels (9, 10) meshing with a pair of eccentric circular gear-wheels (11, 12) so that the shaft (19) rotates with a uniform angular velocity while the rotors rotate in one direction with varying angular velocities. Each of the rotors carries a pair of diametrally-opposed pistons (2, 2' or 3, 3') whereby the interior of the housing is divided into four working spaces (a--d) whose volumes vary as the rotors rotate. The gear-wheels (11, 12) are fixed on the shaft (19) with their points of maximum eccentricity displaced by 180‹ from each other, the eccentricity e, Fig. 7 (not shown), of each wheel being equal to half the radius r 2  of the pitch circle. The semi-minor axis b' and the semi-major axis a<SP>1</SP> of the pitch curve of each of the wheels (9, 10) is equal to 1À5r 2  and 2À5r 2 , respectively, whereby, the gear-ratio is 2:1. It is stated that the configuration of the pitch-curve of each of the oval gear-wheels (9, 10) is not perfectly elliptic. The engine may be adapted to operate as an I. C. engine having exhaust and inlet ports (4, 5) in the housing (1) and a spark-plug 6, which periodically lies in register with each of the working spaces (a--d) in turn when the rotors rotate. Alternatively, the engine may be adapted to serve as a vacuum pump, a pressure pump or a motor actuated by e.g. compressed air, steam or oil, inlet and outlet ports or orifices (indicated in Fig. 2 by broken lines) being provided in an end wall of the casing so that they are controlled by the pistons. The radially outermost peripheralsurface of each piston subtends an angle α at the axis of rotation not exceeding 41À5‹.
Patent GB-1516240-A (GB)
Title: Optical articles prepared from hydrated glasses
IPC: C03C23/00
Filed: 1976-12-13
Abstract: 1516240 Making optical articles from hydrated glass CORNING GLASS WORKS 13 Dec 1976 [15 Dec 1975] 51883/76 Heading C1M An anhydrous base glass comprising in mole per cent:- with optional additions of Al 2 O 3  up to 5 and B 2 O 3 , BaO and MgO up to 3 in total, is hydrated to introduce 0À5-10% by weight of water and is then moulded against at least one die at 250-500‹C with a pressure of 4,000 to 20,000 p.s.i. The moulding surface of the die may be made of WC, W alloys or glassy carbon and preferably has an optical quality surface smoothness. The product may be a lens, reflecting mirror or grating and has a high degree of surface smoothness.
Patent GB-1094427-A (GB)
Title: Improvements in or relating to guide means of continuous-rod manufacturing machines, notably cigarette-making machines
IPC: B23D25/12
Filed: 1966-11-21
Abstract: 1,094,427. Continuous rod cutting guide. USINES DECOUFLE. Nov. 21, 1966 [Nov. 29, 1965], No. 52029/66. Heading A2C. A cutting guide 16 for a continuous cigarette rod cutter which is adapted to follow a circular path while remaining constantly parallel to itself and at right angles to the rod 17, is characterized in that it is secured by a shaft 10 to a rotary pinion 9 having its axis carried by the bottom of a case 11 adapted to be secured in any suitable position on a rotary plate 3 driven at a predetermined speed, the plate 3 having a shaft 4 concentric to the plate 3 and constantly held in a fixed position, the shaft 4 having another pinion 6 secured thereto, both pinions 6, 9 being in constant meshing engagement with a third pinion 7 constituting a planet pinion having its eccentric shaft 8 rotatably driven from the plate 3, the case 11 being movable with respect to the plate 3 to such an extent that the pinion 9 is in constant meshing engagement with the pinion 7. Adjustment of the cutting guide action for different length rods is provided for.
Patent GB-1502025-A (GB)
Title: Link chains
IPC: F16G13/06
Filed: 1975-01-16
Abstract: 1502025 Chains PITCRAFT Ltd 16 Jan 1975 52030/75 Divided out of 1464812 Heading F2Q In a link chain comprising alternating pairs of spaced apart inner and outer links 3, 2 interconnected by pins 11, the apertures 10 of each link of an outer pair 2 are spaced apart by a distance D which is greater than the spacing C of the apertures 6 of each link 3 of an inner pair. Each pin 11 passes through a sleeve 7 interconnecting the inner links 3, and a roller 8 is rotatably mounted on each sleeve 7. The pins 11 are located by pins 18 which pass through diametral bores 12 adjacent the ends of pins 11, the ends 17 of pins 18 being located in slots 16 in ribs 15 on the links 2.
Patent GB-1154952-A (GB)
Title: Manually Operated Control Means for Hydrostatic Transmission Systems
Inventor: MACDONALD JOHN GRAHAM
IPC: F16H47/04
Filed: 1966-11-21
Abstract: 1,154,952. Change-speed control. J. G. MACDONALD. 16 Nov., 1967 [21 Nov., 1966], No. 52053/66. Headings F2D and F2L. A vehicle transmission includes an epicyclic gear unit 9 of which the annulus 10 is driven by a variable-speed hydrostatic gear 2, 4, a manual control lever 37 being movable along slots in a gate 56 so arranged that movement of the lever along longitudinal slots 57, 59 controls the hydrostatic gear pump 2 and movement along lateral slots 58, 60 actuates a selector valve 28 for ratio clutches 20, 21 on the drive-shaft of the hydrostatic motor 17. Transmission details.-The input shaft 1 driving the pump 2 carries a pinion 7 meshing with a pinion 8 integral with the sun pinion 11, the output shaft 14 being integral with the planet carrier 13. Annulus 10 is integral with a pinion 70 driven by alternative ratio pinions 22, 23 coupled to the housings of clutches 20, 21. The hand lever 37 pivots about a pin 38 on a bracket 39 to operate the pump control lever 3 and is rotatable about a shaft 48 to operate links 42, 43 controlling selector valve 28 which consists of a piston with spaced lands 50, 59 and working in a cylinder with a central pressure supply port 56, end exhaust ports 53, 54 and intermediate outlet ports 51, 52 connected to the clutches 21, 20 respectively. Operation.-With hand lever 37 in the middle of lateral slot 58 the pump control lever 3 is in neutral setting and valve 28 admits pressure liquid to lock both clutches 20, 21 so that input shaft 1 drives output shaft 14 at a basic forward speed through pinions 7, 8. Movement of lever 37 towards slot 57 results in release of clutch 21, clutch 20 remaining engaged, so that as lever 37 is moved rightwards along slot 57 pump lever 3 is operated and the annulus 10 and shaft 14 are driven at increasing speed by pinions 22, 24. Movement of lever 37 from the middle of slot 58 towards slot 59 releases clutch 20 and engages clutch 21, whereby movement of lever 37 to the left along slot 59 puts pump lever 3 in reverse setting and the shaft 14 is driven at decreasing speed through pinions 23, 25 until at the end of the slot the shaft is substantially stationary. In that position movement of lever 37 along lateral slot 60 releases both clutches 20, 21, permitting towing or pushing of the vehicle.
Patent GB-1343356-A (GB)
Title: Injection moulding of transmission belts
IPC: B29C70/08
Filed: 1971-11-11
Abstract: 1343356 Belt gearing DAYCO CORP 11 Nov 1971 [7 Dec 1970] 52436/71 Heading F2Q [Also in Division B5] An endless power transmission belt 10 includes a compression section 14 comprising, reinforcing particles 15 embedded in a plastic material each of the particles 15 having its longitudinal axis arranged parallel to the width of the belt. The material may be natural or synthetic rubber or urethane. The particles 15 may be of cotton, rayon, polyesters, nylon, or fibreglass. The belt 10 may also comprise a fabric cover 11, a tension section 12. The belt 10 may be a V-belt.
Patent GB-1288408-A (GB)
IPC: D21F2/00
Filed: 1969-10-27
Abstract: 1288408 Papermaking BELOIT CORP 27 Oct 1969 [2 Dec 1968] 52544/69 Heading D2A A web pickup arrangement comprises a looped Fourdrinier wire 11, a couch roll and a contact roll 15 arranged below and nearer to the headbox than the couch roll to provide a downwardly facing run, a pickup roll 29 disposed between the couch and contact rolls, a pair of coacting superposed press rolls rotating on vertically spaced axes and defining a press nip, and a felt 32 urged into contact with the pickup roll, and carrying the web through the press nip. As shown, web W passes under lump-breaker 27, and is picked off downwardly facing run R by roll 29, which may be a suction roll, as shown, and thence removed by felt 32. The pickup roll is provided with shower 31. The wet press may be two plain rolls, a plain roll and a suction roll, or, as shown, a plain roll 49, and a grooved roll 50, provided with doctor 53 and cleaning shower 51. There may be more than one wet press. In another embodiment (Fig. 1, not shown), the pickup roll may be wrapped by the felt, and the web carried away on the underside of a felt run, with wire side outward.
Patent GB-1486227-A (GB)
Title: Optical fibre cable
IPC: G02B6/44
Filed: 1974-12-05
Abstract: 1486227 Light guides STANDARD TELEPHONES & CABLES Ltd 5 Dec 1974 52596/74 Heading G2J A communication cable comprises at least one optical fibre sheathed in a plastics material which has a plurality of longitudinal reinforcing members embedded in it. The material may be high density polyethylene or polypropylene or polyethylene glycoltere phthalate, and the members may be brass-plated steel wire or polyamide fibres. In making the cable, the reinforcing members are under tensile load during extrusion of the plastics material so that they retract, e.g. by 1% of their length, on being delivered from the extruder, so that the optical fibres are longer than the members in the final cable.
Patent GB-1191775-A (GB)
Title: Valve having Releasable Latch Mechanism
Inventor: CHURCHILL ALAN W
IPC: F16K31/06
Filed: 1968-11-07
Abstract: 1,191,775. Valves. AUTOMATIC SWITCH CO. 7 Nov., 1968, No. 52741/68. Heading F2V. A valve which can only be closed when all the safety devices associated with it are closed comprises a body and a pair of solenoids each having a movable armature above an inlet/ outlet passage in the body, one of the armatures being connected to a disk carrier via a latch mechanism, the disk being the closure member for a valve seat between the inlet and outlet. The disk 13 is secured to the disk carrier 14 which slides longitudinally in the member 15. A stem 39 is slidable with respect to the carrier 13 and in so doing causes the balls 38 to move radially in the bore 37. As shown in Fig. 1, the spring 42 urges the disk 13 on to the valve seat 12. When the stem 39 is raised, the balls 38 are forced into recesses 35 and thereby held against the face 36 by the spring 42. The upper solenoid 21 is connected in series with the safety devices (not shown) so that its armature 29 is only raised against the spring 43 (Figs. 2, 3, not shown) when all the safety devices are closed. From Fig. 1 it can be seen that the armature 29 is in its lower position, i.e. at least one of the safety devices is open. Solenoid 22 is connected to the operating switch which is pressed to raise the armature 30 and so open the valve. However such an opening will only take place if the armature 29 is in its upper position since it is only then that a gap exists in the magnetic field of the solenoid. The armatures are held in their uppermost positions by current passing through the solenoids. If a safety device subsequently opens, the spring 43 forces the open valve from its latched position to the closed position.
Patent GB-1109374-A (GB)
Title: A planetary piston internal combustion engine of the trochoidal type
IPC: F02B53/00
Filed: 1966-11-25
Abstract: 1,109,374. Rotary-piston I. C. engines. N. S. U. MOTORENWERKE A, G, and WANKEL G. m. b. H. Nov.25, 1966 [NOV.27, 1965 ], No.52853/66. Heading F1F. A rotary-piston I. C. engine of the type comprising a housing 1 having a two-lobed epitrochoidal inner peripheral surface 2 and a planetarily rotatable three-sided piston 3 to carry out in sequence in each of three variable volume working chambers 10a, 10b, 1Oc the four phases of induction, compression, expansion and exhaust, includes a transfer passage in the form of a slot 14 controlled by a slide 16 to transfer, just before the completion of the expansion phase in chamber 10c, some of the hot gases of combustion to the next succeeding chamber 106 undergoing compression to increase the effective compression ratio above that determined by engine dimensions. The hot transferred gases supplement the heat of compression to permit ignition and efficient combustion of fuel injected through a fuel-injector 13 when operating under a diesel cycle. The quantity of gas fed back for a given cross-sectional area of slot 14 is dependent upon engine speed. Thus the higher the speed the less time the slot is open and hence less gas is fed back. To counteract this so that the amount of gas fed back is substantially constant irrespective of engine speed, the slide 16 is controlled by a speed governor so that at low speeds the slot 14 is reduced in crosssection and at high speeds increased. If the engine is to operate with spark-ignition on an Otto cycle the slide 16 may be moved fully inwards or a filler member inserted in the slot. The slot 14 is laterally offset with respect to a transverse central plane of the engine so that it and the centrally disposed exhaust port 12 are not controlled by one and the same portions of the radial seals 7. Alternatively the slot 14 may be inclined providing it is laterally clear of the exhaust port.
Patent GB-1398852-A (GB)
Title: District heating plants
IPC: F24D7/00
Filed: 1971-11-17
Abstract: 1398852 District heating systems BRITISH PETROLEUM CO Ltd 28 Sept 1972 [17 Nov 1971] 53284/71 Heading F4U A district heating system comprises a boiler 1 for heating a heat transfer fluid, the fluid being a hydrocarbon based distillate product of initial boiling point greater than 200‹ C. at atmospheric pressure. The heat transfer fluid, at 150‹ C. is passed through a heat exchanger 2 in indirect contact with water flowing through a secondary circuit containing a pump 3 and radiators 4. The secondary circuit may include a thermostat.
Patent GB-1135219-A (GB)
Title: Process for the electrolytic production of potassium permanganate
Inventor: BARONIUS WOLFGANG
IPC: C01G45/12
Filed: 1965-12-20
Abstract: 1,135,219. Electrolytic production of potassium permanganate. ELEKTROCHEMISCHES KOMBINAT BITTERFIELD VEB. Dec.20, 1965, No.53897/65. Heading C7B. Potassium permanganate is produced electrolytically from an unfiltered alkaline potassium manganate containing solution by dissolving and suspending a potassium manganate melt in a continuously operated rapid solver with cominuting action to form a suspension which contains 150- 250 gm/1 K 2 MnO 4  and 100-250 gm/l KOH, which suspension is continuously fed to 10-50 electrolysis cells in series provided with means for preventing sedimentation of undissolved solid fractions, e.g. air-lift pumps, such that the staying time of the electrolyte in the cells is 10-40 hours and electrolysis is carried out at 30-60‹ C. using a current density of 1-5 KA/M<SP>3</SP> such that 70-95% of the K 2 MnO 4  is electrolytically oxidized to KMnO 4 .
Patent GB-1528454-A (GB)
Title: Sulphur dioxide removal or recovery
IPC: B01D53/77
Filed: 1974-12-13
Abstract: 1528454 Sulphur dioxide removal DAVY POWERGAS Ltd 12 Dec 1975 [13 Dec 1974] 53937/74 Heading C1A A process for the removal of sulphur dioxide from a gas containing same comprises providing a sulphur dioxide absorption-desorption system including a sulphur dioxide absorption zone and a sulphur dioxide desorption zone, absorbing sulphur dioxide from the gas in the sulphur dioxide absorption zone by absorption in an aqueous absorption medium containing sodium sulphite to form the corresponding bisulphite and, as byproduct, one or both of the corresponding sulphate and thiosulphate, passing resulting bisulphitecontaining medium to the sulphur dioxide desorption zone, desorbing sulphur dioxide from the bisulphite-containing medium in the sulphur dioxide desorption zone thereby regenerating sulphitecontaining absorption medium for recycling, chemically reducing the amount of one or both of sodium sulphate and sodium thiosulphate formed as by-product in the medium by contact of an aqueous medium containing one or both of sodium sulphate and sodium thiosulphate obtained from said absorption-desorption system with a reducing atmosphere at an elevated temperature, which reducing atmosphere is produced by burning a fluid carbonaceous fuel with less than the stoichiometric amount of oxygen required for combustion of said fluid carbonaceous fuel, quenching the hot mixture resulting from such contact in a quenching zone with an aqueous liquid quenching medium so as to obtain an aqueous liquid product which contains a major amount of the total sodium content as carbonate and bicarbonate on a dry basis, and charging resulting sodium carbonate and bicarbonate to the sulphur dioxide absorptiondesorption system.
Patent GB-1245984-A (GB)
Title: Disc spring for use in clutches
Inventor: WILKES KENNETH WALTER
IPC: F16D13/58
Filed: 1968-11-14
Abstract: 1,245,984. Friction clutches; diaphragm springs. G.K.N. BIRFIELD TRANSMISSIONS Ltd. 7 Nov., 1969 [14 Nov., 1968], No. 54097/68. Headings F2C and F2S. A motor vehicle clutch diaphragm spring carries wear resistant pads 25 at the inner end of each spring finger 22, the pads being formed by the hardened heads of screws, having cheesehead or mushroom shape for use with domed or planar faced throw-out collars respectively. The spring may be fulcrumed between two wire rings or, Fig. 1 (not shown), between a flange (11) riveted to the clutch cover (13) and a raised bead (16) on the cover. The spring acts on a pressure plate (17) to a lamp a friction disc (18) between the plate and a flywheel.
Patent GB-1236864-A (GB)
Title: Improvements in or relating to load plate units for use in polishing machines
IPC: B24B37/10
Filed: 1969-11-05
Abstract: 1,236,864. Polishing. SPEEDFAM CORP. 5 Nov., 1969 [15 Nov., 1968], No. 54330/69. Heading B3D. A circular loading plate unit 82 for a polishing machine 10 has an internal chamber 96, 97, means being provided for circulation of fluid through the chamber 96, 97. On circulating hot water, steam, &c., the unit 82 is heated, so that a layer of molten paraffin wax &c., may be spread over a workpiece-engaging surface, and subsequent circulation of cold water solidifies the wax around positioned workpieces 112, adhering them to the unit 82 for transfer to the polishing machine 10. Polishing.-The machine 10 includes a rotary wheel assembly 38 having a polishing cloth 42 mounted on an annular backing wheel 40, an abrasive slurry e.g. of iron oxide, cerium oxide, &c., being supplied through spouts 48. Pneumatically movable piston rods 28 mount spindle assemblies 54, each supporting, through a universal ball bearing 74, a pressure cup 70 having an annular ridge 72 for engaging a corresponding unit 82 bearing adhered workpieces 112. The lower end of each spindle 54 engages through seal assemblies 102 in a central opening 90 of an upper plate 84 of the respective unit 82, and cooling fluid may be supplied through an inlet 62 and passage 58, entering the chamber 96, 97 through radial channels 92 to flow around a baffle plate 98, and discharging through ports 94 to an outlet 68. A collar 80 excludes abrasive slurry &c., from the bearing 74. A workpiece mounting device 120, Fig. 6, comprises a plate assembly 126 for supporting a unit 82 detached from engagement with the spindle 54, having a nose 128 for engaging the seal assemblies 102, fluid inlet and outlet passages 130, 134 being provided in the nose for pressurized fluid circulation.
Patent GB-1411377-A (GB)
Title: Anti-theft lock for vehicles
IPC: B60R25/021
Filed: 1971-12-06
Abstract: 1411377 Locks MAGNATEX Ltd 6 Dec 1972 [6 Dec 1971] 56628/71 Heading E2A In a steering column lock in which the lock cylinder 3 drives a cam 10 acting on a follower 23 to raise bolt 21 against spring 24, the lock cylinder slides axially into the lock as the key 8 is inserted, and is then held in by ball(s) 6 (until the key is withdrawn) with the result that a spring-loaded projection 27 on the follower rests on rim 3a of the cylinder. Hence, even when the cylinder is returned to the 'OFF' position, the bolt 21 cannot descend until the key is withdrawn allowing the cylinder and its rim to move outwardly, clear of .the projection 27.
Patent GB-1127478-A (GB)
Title: A method of providing ribs on heat-exchanger surfaces with corrugated strips
IPC: B21C37/12
Filed: 1966-12-21
Abstract: 1,127,478. Heat exchanger fins. METALLBAU SEVELEN A.G. 20 Dec., 1966 [21 Dec., 1965], No. 57203/66. Heading F4S. [Also in Division B3] A heat exchanger is provided with internal or external fins by welding a strip to a tube, the strip being slit at positions along its length and corrugated with the crests of the corrugations displaced relative to each other. The strip may be helically wound or around the tube or bent longitudinally. The corrugations may be various shapes, e.g. trapezoidal.
Patent GB-1304769-A (GB)
IPC: H03K19/08
Filed: 1970-12-02
Abstract: 1304769 Pulse thresholding circuit INTERNATIONAL BUSINESS MACHINES CORP 2 Dec 1970 [22 Dec 1969] 57203/70 Heading H3T In a logic thresholding circuit in which the logic signal (I1, Fig. 3) is compared with a reference value B which follows the input signal after a delay so that rapid switching is effected and in which the threshold is initially moved towards the signal so as to further reduce the switching delay, the initial movement is effected by a pair of emitter follower transistors having a common output terminal but different values of emitter resistance. The circuit also serves to prevent false operation due to signals reflected from the output line (shown dotted). In Fig. 1 the logic signals at the bases of transistors Q1-Q1n are compared, in a current switching circuit, with the threshold value applied to the base of Q2, the output signals of opposite polarity being provided for emitter followers Q3 and Q4 together with signals from similar logic circuit applied to Q3n and Q4n. The threshold signal at the base of Q2 is provided by a circuit 10 described below from the output of Q1, the circuit being such that its output immediately follows the input and thereafter changes in opposite sense. Resistors R2 and R3 are of different value to equalise the outputs. Circuit 10 comprises two transistors coupled in the manner of a Schmitt trigger and supplying an output from its common emitter resistor. A positive going signal initially supplies an inphase output as the transistor Q5 act as an emitter follower. Subsequently the output from the collector of Q5 renders Q6 conducting and the conducting conditions of the transistors thereafter changeover regeneratively the current change in Q6 being much larger than that in Q5 so that the output is out of phase with the input. Similarly, when the input goes negative, transistor Q5 provides a negative going output until Q6 conducts and reverses the change. R12 may be omitted and a level changing resistor may be inserted between R11 and R13 (Figs. 4 and 6, not shown).