baber/WOPTO huggingface dataset:
Patent GB-512023-A (GB)
Title: Means for forced commutation of current in a converting arrangement employing a discharge device
IPC: H02M7/00
Filed: 1938-02-22
Abstract: 512,023. Converting. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Feb. 22, 1938, No. 5579. Convention date, Feb. 27, 1937. [Class 38 (ii)] In a converting arrangement comprising a discharge device in which a condenser is provided for effecting forced commutation of current, in addition to the normal discharge circuit for the condenser there is provided an auxiliary discharge circuit, this circuit including a grid controlled valve. This enables the charge on the condenser to be varied with load to give an approximately constant commutation voltage across the condenser. In the form shown in Fig. 1 a transition anode 40 is provided and is connected to the star point of the transformer 21 through a condenser 30 which is periodically charged through a valve 71 and inductance 54. The auxiliary discharge path comprises a valve 70 and inductance 53. In a modification shown in Fig. 2 in which an interphase transformer arrangement is provided, two transition anodes 41, 42 are used, these being connected to the ' star-points through windings of a transformer 28 which has a winding connected to a condenser 30 and a further centre-tapped winding connected to anodes 72, 73 and to a D.C. source 74, this circuit constituting the charge and discharge circuits of the condenser. In a modification of this the transition anodes are omitted and the condenser is connected to a winding coupled to the interphase transformer. The charge and discharge circuits for this condenser are provided by a further centre-tapped winding arranged on the interphase transformer and which is connected in circuit with four auxiliary anodes and auxiliary supply transformer. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 496,479. Other arrangements were also described in which the commutation condenser formed part of an oscillatory circuit tuned to the " frequency of commutation." This subjectmatter does not appear in the Specification as accepted.
Patent GB-1397343-A (GB)
Title: Electrophotographic apparatus
IPC: G03G5/10
Filed: 1973-02-05
Abstract: 1397343 Electro-photographic apparatus HOECHST AG 5 Feb 1973 [7 Feb 1972] 5605/73 Heading G2H In an electro-photographic apparatus employing a photo-conductive material 19 disposed on a conductive layer 18 supported on a movable web 17 the conductive layer is connected to a source of fixed potential by a stationary contact having a carbon surface. As shown a layer 24 of graphite tissue clamped between metal blocks 22, 23, 28 and 29 is supported by a foam pad 31. In an alternative form, Fig.3, the graphite layer 36 and foam pad 35 are supported in a screw threaded holder 32. A screw insert 33 forces the graphite layer to project beyond the end 34 of the holder. The graphite may be replaced with carbon filament felt.
Patent GB-1366396-A (GB)
Title: Electrical discharge machining apparatus
IPC: B23H7/26
Filed: 1972-02-07
Abstract: 1366396 Electro-erosion RAYCON CORP 7 Feb 1972 [8 Feb 1971] 5615/72 Heading B3V An electro -erosion machine includes a cartridge assembly 54 supporting parallel electrodes 62 and removably mounted on a carriage 36 which is movable in a direction longitudinally of the electrodes 62. The carriage 36 is slidably mounted on guide rods 34 extending between portions 30, 32 of a vertically movable slide 22. The electrodes 62 are slidably mounted by a retainer plate 64 in vertical grooves (60) (Fig. 8, not shown) of a cartridge member (58) of the cartridge assembly 54 which is mounted on the carriage 36 by bolts (56) (Fig. 3, not shown). At their lower ends, the electrodes 62 are positioned between a gripper block 76 and a gripper member 82 slidably supported on pins (78) (Fig. 9, not shown) connected to the block 76. The block 76 is secured to pins 72 which are slidably mounted in projections 70 of the assembly 54 and in an electrode guide 68 positioned below the gripper member 82 and secured to the portion 32 of the slide 22. In operation, the electrodes 62 are first brought into engagement with a workpiece by moving the block 76 upwardly against spring bias 88, moving the gripper member 82 towards the block 76 against spring bias (84) to clamp the electrodes 62 and then moving downwardly together the block 76 and member 82. The electrodes 62 are retained in this position by tightening a clamp bar 90 against them. A cylinder 41, which is connected to the carriage 36, is thereafter actuated to cause the carriage 36 to rise until it abuts a stop 48 connected to the cylinder's piston-rod 45 so as to raise the electrodes 62 a distance A equal to at least the desired spark gap. During erosion, the carriage 36 is fed downwardly by a cylinder 42 having its piston-rod connected to the stop 48. Current is supplied to the electrodes 62 via contact blocks (94) (Fig. 11, not shown) mounted in the member (58).
Patent GB-114627-A (GB)
Title: Improvements in Artificial Teeth.
Inventor: CRATE WALTER WINFIELD
IPC: A61C13/093
Filed: 1918-04-02
Abstract: 114,627. Crate, W. W. April 2. 1917, [Convention date]. Teeth, artificial.- A tooth 1, Figs. 1 and 2, is formed with two parallel grooves 2, curved at the base so as to be deepest at their centres and cut at an angle so as to diverge as shown in Fig. 2. In modifications, one or more additional grooves 4 ma.y be formed in the tooth as shown, for instance, in Fig. 5, or, as shown in Fig. 6. a single inclined groove 2 may be supplemented by two short grooves 5.
Patent GB-396471-A (GB)
Title: Roofs for motor cars and other vehicles
IPC: B60J7/12
Filed: 1932-02-26
Abstract: 396,471. Vehicle opening-tops. BRUPBACHER, O., 10, Militõrstrasse, Lucerne, Switzerland. Feb. 26, 1932, No. 5728. Convention date, Feb. 26, 1931. [Class 108 (i).] In vehicle roofs of the kind which comprise cross pieces which are slidable along the roof and support a flexible covering which folds in concertina fashion when the cross pieces are slid together, the cross pieces are so interconnected and attached to the covering that when they are slid together the covering, and if desired, the inner lining, is positively laid in a definite number of folds. In the form shown in Fig. 4 the sliding portion comprises hoop-sticks 3 provided with an outer cover and an inner lining and is shown collapsed towards the front while the folding rear portion 9 is folded down. This rear portion may have the upstanding portion shown hinged so that it does not project so far upwardly, and when erected may engage between side frames 22, 23. The sliding portion and rim portion may be connected so that they fold together to the rear, and this form is shown in Fig. 7. The hoop-sticks 3 may be straight or with bentdown portions and are provided with rollers of various forms to run in longitudinal guideways. Each end of the hoop stick may be provided with a fitting 30 provided with a horizontal roller 39, Fig. 9, and one or two vertical rollers 41 adapted to run in rails 31 of the shape shown and provided with a drainage gutter 35 adapted to be covered by the cover 5. Another form of ball-bearing roller 41 and rail 68 is shown in Fig. 17, and the hoop stick 3 with its roller 41 is arranged to expand and contract to accommodate itself to the varying width between the rails. In the form shown the rod 62 slides in a barrel 63 provided with a spring 64, the rod being guided by means of a pin 56 in slots 61. Auxiliary cross-members 70, Figs. 20 and 23, connected to the main hoop-sticks 3 by bands 72, 73 of unequal length are provided in order to cause the cover 5 and lining 6 to be folded correctly when the hood is collapsed. The rollers may be non-metallic.
Patent GB-1493865-A (GB)
Title: Production of maleonitrile
IPC: C07C253/00
Filed: 1975-02-11
Abstract: 1493865 Maleonitrile TAKEDA YAKUHIN KOGYO KK 11 Feb 1975 [18 Feb 1974] 5755/75 Heading C2C Maleonitrile is obtained by reacting cyanoacetylene with hydrogen cyanide.
Patent GB-588887-A (GB)
Title: Improvements in or relating to parachute harness
IPC: B64D17/22
Filed: 1945-03-09
Abstract: 588,887. Parachute harness. QUILTER, J. R. C. March 9, 1945, No. 5900. [Class 141] A parachute harness comprises a sling consisting of separate cords affording a seat for the wearer, leg loops and a number of straps round the chest and back, guide tunnels being provided on these loops and straps which allow the sling cords to slip freely through them, the tensioning of the sling cords under load automatically tightening the straps. As shown, two chest straps 15 are joined by a buckle 16 and are connected to straps 18 crossing at the back and having their ends passing over the shoulder and engaged in buckles 19. A V-shaped strap 20 is joined to the front and side of each chest strap 15 and also passes through one of the buckles 19. The sling consists of eight cords 10 which pass downwards through each buckle 19. and then divide into two groups of four passing through tunnels 33, 34 at the front and side respectively, of each chest strap 15. Those passing through the tunnels 34 also pass through tunnels 25 at the end of a back strap 24 which they support. All eight cords pass through tunnels 29 at the upper end of one of the leg loops 28, the lower end of which is joined to the seat portion beneath stiffening pads 13 having tunnels 14 through which the cords are freely slidable. The cords normally form a diamond shape at the side of the front which pulls out vertically, tightening the back and chest straps, when tension is applied. The back strap 24 is positioned from the leg loops 28 by fabric distance pieces 30. The strap 24, loops 28 and straps 18 are held loosely on a lining garment 26 by flaps 31. Adjustment cords 35 are secured at 36 to the side of the chest straps 15, pass through loops 37 and are secured at 38 to the front of each chest strap 15. To prevent the leg loops 28 from slipping, weak threads 39 may be provided to tie them to the cords passing through the tunnels 29.
Patent GB-826955-A (GB)
Title: Improvements in or relating to self-sealing electric condensers
Inventor: STRAEB HERMANN
IPC: H01G4/008
Filed: 1956-02-25
Abstract: 826,955. Capacitors. BOSCH G.m.b.H., R. Feb. 25, 1956, No. 5948/56. Class 37. In a self-sealing capacitor comprising paper dielectric bearing thin metal coatings, the paper dielectric is provided with an insulating coating of a substance which is chemically stable up to at least 150‹ C. The coating may consist of a thermosetting plastic material such as a polyester resin, phenolic resin or ethoxylene resin which are heat set after application to the paper or of a thermoplastic material having a high melting point such as polyvinyl carbazole or polyethylene terephthalate. A suitable filler such as finely ground quartz may be added to the coating material to reduce the shrinkage thereof. The metal coatings may comprise an alloy of 10% bismuth and 90% cadmium. Specification 499,795 is referred to.
Patent GB-173446-A (GB)
Title: Improvements in and relating to shaft packing devices
IPC: F16J15/44
Filed: 1921-02-22
Abstract: 173,446. British Thomson - Houston Co., Ltd., (General Electric Co.). Feb. 22, 1921. Stuffing-boxes, substitutes for; connected to source of low pressure.- Packing for a turbine &c. shaft consists of radial teeth on the shaft cooperating with teeth on the stator inclined to the direction of flow of leakage, and having flat peripheral surfaces. The radial teeth 9 on the shaft are formed with edges of reduced thickness, and are carried by a sleeve 8, shrunk on the shaft, and having a flange secured to a shoulder on the shaft by studs. The inclined teeth 19 are formed on or secured to packing-rings 16, 17, 18 formed in halves, and secured by dovetail joints in a sleeve 12; also formed in halves. The teeth 9 are closer together than the teeth 19, and the latter are formed with flat edges 21 cooperating with the teeth 9. The space between the packing-rings 17, 18 communicates with a leakage, chamber 14, while the packing-ring 18 is formed with two sets of oppositely inclined teeth, the space between which communicates with a chamber 15, connected to a source of low pressure.
Patent GB-1121410-A (GB)
Title: Pneumatic handling system for granular material
IPC: B65G53/00
Filed: 1967-02-08
Abstract: 1,121,410. Pneumatic conveyers. NEWAYGO ENG. CO. 8 Feb., 1967 [17 June, 1966], No. 6090/67. Heading B8A. Granular material in a hopper 3 passes through a valve, controlled by a pneumatic ram in a housing 40, into a fluidizing chamber 10, containing a fluidizing nozzle 60, Fig. 3, which directs an annular stream of air spiralling downwardly into the chamber, and thence the fluidized material passes into a discharge pipe 75. The fluidized material passes up the pipe 75, through a valve 73 into a pipe 76 which is provided with a Venturi unit 80, Fig. 5. A vent pipe from the chamber 10 is provided with a pneumatically controlled valve, Fig. 9 (not shown). A pneumatic circuit for controlling the timed cycle of operations is described, Fig. 8 (not shown).
Patent GB-1497321-A (GB)
Title: Building construction and apparatus therefor
IPC: E04B1/35
Filed: 1975-02-13
Abstract: 1497321 Erecting buildings P O CORTINA 13 Feb 1975 [18 March 1974 16 July 1974] 6104/75 Heading E1S A lift-slab method of erecting buildings comprises hinging peripheral wall portions, (e.g. 12c), to the floor slab next above, (e.g. 24), the wall portions being cast in a horizontal position on the floor slab next below (e.g. 23) extending inwards from the hinge, the slabs and wall portions all being lifted together from an initial stack (Fig. 1, not shown), and the wall portions swinging outwards as they become free to do so. The lifting apparatus comprises temporary columns 27 arranged in pairs on a base slab 10 and carrying lifting beams 29 on which jacks 31 are mounted, the jacks acting on lifting rods 32 which lift the slabs via links 33, 35, 37, articulated to provide a small movement down of each wall portion before the next slab is pulled up (Figs. 14a-14c, not shown). The slabs may be stabilised against the columns by a U-bolt 39 attached to threaded rods projecting from the slab edges. The wall portions and slabs may be initially interconnected by short pins (48), Fig. 8 (not shown) passing through aligned vertical bores (18), and finally reinforced by longer rods also passing through these bores. Additional wall portions 25, 28 are added after the erection process.
Patent GB-817879-A (GB)
Title: Improvements in or relating to cartridge fuse links
Inventor: SIMMONDS HENRY
IPC: H01H85/143
Filed: 1957-02-25
Abstract: 817,879. Fusible cut-outs. ENGLISH ELECTRIC CO. Ltd. Feb. 21, 1958 [Feb. 25, 1957], No. 6215/57. Class 38 (1). A cartridge fuse has a cylindrical insulating body 1 of ceramic material with pressed-on inner end caps 2, 3 and thin silver strip fuse elements 4 passing through central holes in the end caps to which they are secured by spot-welding at 5 and by soldering at 7 in such a way as to provide upstanding bights 6 between the points 5 and 7. Outer end caps 8, 9, having connecting lugs 10, 11, are forced on to the inner end caps 2, 3 until they deform the bights 6 making a good electrical contact with them. The body 1 is filled with powdered silica or other arc quenching material which surrounds the fuse elements 4. The elements 4 may each be shaped in the neighbourhood of the fusing region so as to produce a particular fuse characteristic. The portions 6 of the elements 4 may be curved in two directions in order to stiffen them. Instead of having a number of separate strip elements 4 the fuse may have a single element which may be tubular with suitable holes around its central portion to provide a number of parallel connected fusing regions.
Patent GB-1423777-A (GB)
Title: Electrical switches
IPC: B60R22/343
Filed: 1973-02-08
Abstract: 1423777 Inertia switches S UBUKATA 8 Feb 1973 [10 Feb 1972 12 May 1972 25 May 1972 24 June 1972 19 July 1972] 6227/73 Heading H1N In an inertia switch system comprising a conductive liquid in one or more sealed containers and arranged in a vehicle for actuating safety devices at specific acceleration/time conditions, the circuit is opened or closed at a first relatively low acceleration for a first relatively long duration or at a second relatively high acceleration applied for a relatively short duration. In one embodiment an inertia switch P 1 , Fig. 8, having a high acceleration response is placed in parallel with an inertia switch P 2  having a low acceleration response and arranged to operate a device D1 for fastening an occupant to the seat or operating an air bag. A suitable switch having a high acceleration response comprises a chamber 31 Fig. 3 containing mercury 35 normally in contact with a conductive ring 34C and engageable with a cylindrical contact 34B embedded in the wall of the chamber 31 and sealed by a bonding agent 36. The corresponding switch having a low response value comprises a flat conical container 711 containing mercury 715 and having a conductive cover 712 forming one contact, the other contact 713 being an annulus arranged near the periphery. Other embodiments are described in which tongues (143A) Fig. 13 (not shown), or (1711A) Fig. 16 (not shown), are arranged near thesurface of the mercury to prevent splashing. The chambers of the switches may also be made flexible so that they may be squeezed or distorted in order to adjust the mercury levels for varying the operating characteristics. In other embodiments the inertia switches have a normally closed circuit and are connected in series so that one or other of the high or low response switches breaks the circuit to cut off the vehicle fuel supply or ignition system. Suitable switches are described and are similar to those of Figs. 3 & 7 except that a central electrode dips into the mercury whereby the circuit is broken when the mercury moves towards the periphery of the container. In one particular embodiment the mercury Hg. Fig. 10 in a single chamber 1131 moves in different directions under the high and low accelerations to give the two separate responsive conditions. Normally a central contact 1133 and an annular contact 1135 attached to the cover 1132 are bridged by the mercury to maintain a normally closed circuit. In the event of a high acceleration the mercury breaks up into two separate regions Hg, Fig. 11, whereby the circuit is broken. Under conditions of low acceleration the mercury flows along the base of the container 1131 until it breaks contact with the central contact 1133
Patent GB-1492231-A (GB)
Title: Weighing balance
IPC: G01G3/08
Filed: 1976-02-17
Abstract: 1492231 Weighing balance TERRAILLON 17 Feb 1976 [16 May 1975] 06253/76 Heading G1W A balance comprises a base 1, a platform 2, an indicator 3 driven by a rack 18 and pinion 19, and a mechanical linkage connecting the rack to the platform, the linkage including an arm 17 pivotally connected to the rack and urged into contact with two spaced abutments 24, 25 fixed relative to platform 2 by resilient means 29, the arm being turnable about either abutment to protect the teeth of the rack and pinion from the effects of shock loading of the platform. Platform 2 is connected via a member 5 to a plate 6 that is connected to a plate 7 fixed to base 1, by upper and lower pairs of leaf springs 11, 12. A weighing spring 13 is connected between a cantilever 15 fixed to plate 7 and one of the lower springs 12. Rack 18 is pivotally coupled at 20 to arm 17 which has a pair of arcuate slots 22, 23 which engage the abutments 24, 25 in the form of pins on a member 26 bolted to plate 6. A spring 29 bolted to plate 6 normally urges lever 17 to the position shown in which the pins 24, 25 abut the inner ends of slots 22, 23 but in the event of an upwardly or downwardly directed shock load on platform 2, lever 17 pivots about pin 24 Fig.6 (not shown) or pin 25 Fig.5 (not shown) respectively to protect the teeth. A setting screw 28 allows the inclination of lever 17 to be adjusted.
Patent GB-549448-A (GB)
Title: Improvements in catalytic reactions
IPC: B01J23/22
Filed: 1941-05-15
Abstract: 549,448. Catalytic processes ; oxidation of organic compounds. DREYFUS, H. May 15, 1941, No. 6262. [Class 1 (i)] [Also in Group IV] Strongly exothermic catalytic reactions such as the partial oxidation of hydrocarbons are effected with the use of a catalyst mixed with a relatively inactive substance, both materials being in the form of discrete granules with their surfaces exposed to the reactants. The process is applicable to the oxidation of toluene to benzoic acid, of naphthalene to phthalic anhydride, of benzene to maleic acid, of ethylene to ethylene oxide, of alcohols to aldehydes &c. A suitable catalyst for the oxidation of toluene consists of one volume of tin vanadate and four volumes of pumice, both in the form of granules of 10 to 20 mesh per inch.
Patent GB-164444-A (GB)
Title: A new or improved means of stopping the cage in coal or other mines at any part of the shaft in case of the rope or wire breaking
IPC: B66B5/18
Filed: 1920-03-02
Abstract: 164,444. Strang, R., and Strang, J. March 2, 1920. Catch gear of mine-cage type.-Safety catch gear for mine cages comprises a pair of crossed levers L, L' connected by a pivot M and pivotally suspended from brackets I, I<1> attached to the floor of the cage. The levers are provided with teeth R, R' to engage the guides E and are held in operative position against the action of the spring O by ropes or chains F, F<1> attached to the hoisting-rope B.
Patent GB-312620-A (GB)
Title: Improvements relating to the shelling or hulling of oats or other grain
IPC: B02B3/08
Filed: 1928-02-29
Abstract: 312,620. Murphy, J., and Bandon Milling & Electric Lighting Co., Ltd. Feb. 29, 1928. Hulling, husking, and decorticating. -In apparatus for shelling oats &c. of the kind in which the grain is whirled by a current of air produced by a rotor 4a mounted within a housing and is thus caused to impact with the blades 4 of the rotor, a series of rotors are provided, mounted on coaxial shafts which, when desired, may be driven independently of each other and at different speeds. The shafts 5 may be connected by friction clutches 6a and each shaft is provided with step cone pulleys 6. Alternatively each shaft may be directly coupled to an electric motor. The grain is fed in through the pipe 7 and is transferred from one rotor to another through pipes 16 solely by the draught caused by the rotors. Treatment in one or more of the rotors may be omitted by feeding at an intermediate point.
Patent GB-230822-A (GB)
Title: Methods of and means for producing combustible mixtures for internal combustion engines
IPC: F02M21/00
Filed: 1925-03-09
Abstract: 230,822. International Gas Power & Appliance Co., (Assignees of Wysong, A. S.). March 12, 1924, [Convention date]. Spray carburettors. - Heavy fuel and water are sprayed into a cham ber and mixed with air and the resulting mixture has acetylene gas added to it before its entry into the cylinder. The casing 11 has a fuel chamber 12 and a water chamber 23 which communicate through con duit 19 and valved passage 20, and conduit 30 and valved passage 31 respectively, with a mixing chamber 21 to which air is admitted through ducts 34<1> in its base. The passages 20, 31 open into the seat of a valve 40 mounted on a spindle 35 provided with a stop 36 and lock nut 37 and prevented from rotating by a set-screw 39. Above the valve 40, the spindle carries loosely two atomizing wheels the blades 43, 44 of which are oppositely handed, and has a hub 46 carrying blades 47 of opposite hand to the blades 44. After leaving the throttle valve 49 the mixture passes a suction actuated valve 51, Fig. 4, which prevents damage due to back firing and to the seat of which is led through ports 52, acetylene gas from a pipe 56 connected with a supply under pressure or with a generator. Alternatively, the acetylene gas may be admitted to the mixing chamber 21.