baber/WOPTO huggingface dataset:
Patent GB-1473793-A (GB)
Title: Hopper outlet assemblies
IPC: B61D7/20
Filed: 1975-04-17
Abstract: 1473793 Valves MINER ENTERPRISES Inc 17 April 1975 [14 June 1974] 15901/75 Heading F2V A hopper outlet assembly 10 comprises a discharge opening defined by front 14, rear 18 and side 16 frame sections, a gate 46 movable to open and close the discharge opening by means of a rotatable operating shaft 50 mounted on the gate 46, a pair of pinion gears 54 on the shaft 50 being in meshing engagement with a respective rack member 48 located on a respective extension member 38 of the side frame sections 16. Locking means are provided for locking the gate 46 in its closed position, the said means comprising a pair of stop members 88 mounted on the extension members 38, each stop member 88 being in the form of an angle bracket having a flange portion 90 presenting a forwardly facing bearing surface 94, and a lock shaft 98 rotatably journalled in brackets 100 secured to the operating shaft brackets 52. Radially-extending cam plate sectors 102 are secured to the ends of the shaft 98, each plate 102 having a cam surface 104 in alignment with the associated bearing surface 94, the plates 102 normally tending to rotate clockwise to the position shown in Fig. 5 in which the cam surfaces 104 engage the bearing surfaces 94 when the gate 46 is fully closed. In order to release gate 46 for movement the plates 102 are rotated upwardly to a position in which a leg 108 of an abutment member 106 secured to each plate 102 contacts shaft 50 (as shown in Fig. 7 (not shown)). Then, initial rotation of the operating shaft 50 to open gate 46 causes projections 116 on the shaft to engage the legs 108 to cause the plates 102 to swing down so that the latter initially engage and ride over the tops of the respective stop members 88, and when the plates 102 have passed the members 88 the other leg 110 of each abutment member 106 rides over the associated rack member 48. When the shaft 50 is rotated in the opposite direction to close gate 46 the plates 102 engage and ride over the stop members 88 and then rotate to their locked position shown in Fig. 5.
Patent GB-1475550-A (GB)
Title: Electrolytic generating and gas pressure regulating apparatus
IPC: C25B9/19
Filed: 1974-07-22
Abstract: 1475550 Controlling electrolysis automatically Y BROWN 22 July 1974 [3 Aug 1973 2 May 1974] 15909/76 Divided out of 1475549 Heading C7B [Also in Division H1] Electrolysis apparatus for generating a hydrogen/ oxygen mixture for welding purposes includes a further cell whose electrodes are in series with the main cell electrodes, the electrolyte level in this cell being variable by means of gas pressure generated in the main cell, whereby the electrolysis current is caused to vary in dependence on the generated gas pressure. A total cut-out feature may be incorporated either integrally or separately, with also an optional pressure relief valve. The further cell has two chambers, inter-connected at their lower ends, one acting as electrolyte reservoir and the other containing the electrodes. The current controller may have interfitting conical electrodes 34, 35 in a KOH bath. The upper inlet is for gas from electrolysis. A cut-out switch for use in series with the controller has electrodes 43, 44 in Hg 42', with a gas pressure inlet 45. A non- inflammable liquid 43' e.g. silicone or hydrocarbon oil is floated on the Hg to reduce arcing and explosion risks. The safety valve is provided in  chamber 32 or 41. An integral controller/electrolysis cell is that described in the Parent Specification. For welding use, the arrangements disclosed in that Specification also apply.
Patent GB-1033618-A (GB)
Title: Electric starter mechanism for internal combustion engines
Inventor: SEILLY ALEC HARRY
IPC: F02N15/06
Filed: 1962-04-26
Abstract: 1,033,618. Electrical engine starting mechanisms. C.A.V. Ltd. April 16, 1963 [April 26, 1962], No. 15924/62. Heading F1K. The subject matter of this Specification is the same as that described in Specifications 1,033,616 1,033,617, 1,033,619 and 1,033,620 but the claims are concerned with a hollow transparent part enclosing the motor switch.
Patent GB-1494301-A (GB)
Title: Adjustable suspension of well tubing
IPC: E21B33/04
Filed: 1976-04-20
Abstract: 1494301 Wells &c GRAY TOOL CO 20 April 1976 15934/76 Heading E1F A wellhead assembly 10 including a tubing head 14 and a tubing string 26 supported therefrom by a tubing hanger 30, has an adjustable ram assembly 34 for supporting the hanger 30 relative to the head 14, the ram head (40) being movable by positioning means to a first -position where it does not engage the hanger 30, a second position (Fig. 2B) where it comes into ratcheting engagement with the hanger 30, and a third position where it interferes with the hanger 30 to prevent relative vertical movement between the hanger 30 and the head 14. As shown the ram head is reciprocable in a bore 41 in the tubing head 14 and has teeth for cooperation with grooves in the hanger 30 to provide the ratcheting and interfering engagement. The positioning means comprises a rotatable shaft 59 having an enlarged threaded portion 66 for engagement with screw threads 68 of a plug 52 and having a head 60 located in an opening 61 in the ram head. Thus rotation of the shaft effects movement of the ram head into its first, second or third positions, and a lost motion connection is provided to allow ratcheting since the width A of the head 60 is less than the width B of the opening 61. The ram head is biased into engagement with the hanger 30 by a spring 49, and a rod (70) extends between the plug 52 and the ram head to prevent rotation of the ram head. Preferably the wellhead assembly 10 includes a lower tubing head 12 and an outer string 18, the inner string having a subsurface safety valve 27 attached thereto. In installing the valve 27, the ram heads are moved to their first position, the outer string 18 is fixed with respect to the lower head 12, the inner string 26 with valve 27 is installed to a predetermined depth, the valve 27 is latched with respect to the outer string 18, the ram heads are moved to their second position, the hanger 30 is tensioned and pulled upwardly with respect to the upper head 14 until a desired position is reached, and the ram heads are moved to their third position. A packoff assembly 77 may then be installed and plastics material can be injected through an injector 81 to effect packing of seals 80 to seal the annulus between the strings 18, 26. The method may be modified to allow the removal of tubing joints from the inner string 26 after tensioning, tubing pup joints and the hanger then being attached to the string to make it a desired length.
Patent GB-292584-A (GB)
Title: Means for maintaining constant frequency in electric oscillation generators
IPC: H03B5/10
Filed: 1928-05-31
Abstract: 292,584. Lorenz Akt.-Ges., C. June 24,1927, [Convention date]. Thermionic generators. - The frequency of valve oscillationgenerators having their discharge paths subject to the effect of a magnetic field is maintained constant by causing variations in the operating supply-current circuits to affect other characteristics of the circuit in such a way that the negative resistance of the discharge path remains constant. The total magnetic field for operating a valve 1 of the kind described in Specification 182,105 comprises components from a constant current, from a current depending on the heating voltage, and from a current depending on the anode voltage. The winding sense and number of turns of magnetic coils 6, 8 supplied respectively by the filament batterv 7 and the anode battery 9 are selected to compensate the effect of variations in the voltages of those batteries on the negative resistance of the valve.
Patent GB-790184-A (GB)
Title: Anti-backlash gearing
IPC: F16H55/24
Filed: 1956-05-23
Abstract: 790,184. Toothed gearing. NATIONAL RESEARCH COUNCIL. May 23, 1956 [June 2, 1955], No. 15953/56. Class 80 (1). An anti-backlash device for worm gearing comprising a driving worm b and a driven wormwheel c consists of a second worm a also engaging the wheel c and connected through gears d, e to the first worm b. The worm a is allowed certain degree of freedom longitudinally of its shaft g and is acted upon by a spring f so as to always apply a resilient longitudinal force on the driving worm b in the same direction greater than any force exerted by the driving motor r. Alternatively, the spring could be arranged to act on the driving worm b which would be provided with appropriate end play greater than the worm a which should have as little as possible.
Patent GB-403300-A (GB)
Title: Cylinder-heads and valve gear of multi-cylinder internal-combustion engines
IPC: F01L1/12
Filed: 1933-06-02
Abstract: 403,300. Valve gear ; casings. WALFORD, E. W., 18, Hertford Street, Coventry.- (Read, B. ; 295, Chalmers Avenue, Detroit, Michigan, U.S.A.) June 2, 1933, No. 15980. [Classes 7 (ii) and 7 (vi).] In a multicylinder engine having inclined overhead valves 11 actuated by a single cam shaft 16, this shaft is arranged in a housing 17 supported directly from a one-piece cylinder head 10, and actuates the valves through tappets 15 and rockers 14. The tappet guides 19 and the bearings 20 for the rocker pivots may be integral with the housing 17. The rockers may be formed of sheet-metal pressings having two cheeks 21 with co-axial holes 22, as shown in Fig. 3, for receiving the pivot 23 which also passes through the bearing 20. End caps 25, 26 are fitted into the holes 22, so that their flanges 29 bear against the inner faces of the cheeks 21 and against the outer faces 30 of the bearing 20. The pivot 23 is formed with a slot at one end for engaging a crosspiece 24 on the cap 25, and with a hole 28 at the other end to receive a spring pin 27. Wearing-tips 31 may be copper-brazed to the rocker. An oil-tight cover 35 encloses the whole.
Patent GB-1397791-A (GB)
Title: Switching of rail-guided vehicles
IPC: B62D1/26
Filed: 1972-04-06
Abstract: 1397791 Controlling rail vehicles SCHWEIZERISCHE INDUSTRIE-Gebr 6 April 1972 [16 April 1971 10 Nov 1971] 16023/72 Headings B7L and B7N In a transport system in which a carriage 1 runs in an enclosed hollow rail 13 in which it is supported on rollers 3, 4, is stabilized by rollers 11, and normally guided by rollers 6-9, the carriage is provided with a tracking member 19 which is moved at track junctions to engage one or other side of a further rail 30, 31 provided only at the junctions to route the carriage to a required branch or from a branch to a main line. The system can be an overhead rail system (as shown) with hanger member 15 supporting a load or the rail can be at ground or below ground level with a slit in its upper surface via which the carriage 1 is connected to a vehicle body. At a branching junction, Fig. 5, the tracking member 19 runs initially in a centre slot in the further rail and is then moved by element 26 controlled via solenoid 27 to the right or left of the rail 30 in dependence on which route has to be followed. After passing the junction fixed rail elements 33 allow the tracking member to return to its mid position under the action of springs 22. At a meeting junction, Fig. 4, fixed track elements 28 move the tracking member to one or other side of the rail 31 in dependence on the direction of approach and fixed track member 35 after the junction assists in returning the member to its mid position. The switching element 26 can be replaced by means on the vehicle for moving the tracking member 19 at approach to a branching junction.
Patent GB-579743-A (GB)
Title: Process of treating sulphidic tungsten ore concentrates
IPC: C22B34/36
Filed: 1942-11-13
Abstract: 579,743. Separating bismuth and copper from tungsten ores ; tungstic acid; tungstates. WILLIAMS, T. J. Nov. 13, 1942, No. 16089. [Classes 1 (ii) and 1 (iii)] Sulphidic tungsten ore concentrates are powdered, intimately mixed with solid oxidising agents of the same mesh size, and treated with hydrochloric or diluted sulphuric acid whereby sulphides of bismuth and copper are brought into solution and separated from the concentrates. Suitable oxidising agents are nitrates, nitrites, chlorates. peroxides, perborates and other per compounds, particularly sodium nitrate or manganese dioxide. Preferably a mixture of sodium nitrate and pyrolusite in a ratio of 4-8 or more : 1 by weight is used. The ore may itself be attacked by the treatment to form tungstic oxide and soluble calcium or iron salt and, after removal of the acid solution, may be reacted with ammonia or caustic soda or potash to convert the free tungstic oxide to tungstates for the manufacture of pure tungstic oxide or other products. The small particles of ore are most readily attacked and, since they remain in suspension, may be syphoned off from the heavier residue after the acid leaching, and subjected to the alkali treatment for producting of tungstates. Alternatively, the ore concentrates may be screened to separate the fines which are separately subjected to the acid leaching. In examples: (1) a schulite concentrate is groundto 60 mesh size, intimately mixed with 3 per cent. of pyrolusite and 15 per cent. of sodium nitrate of the same mesh, and then treated with 80 per cent. of its weight of 33 per cent. hydrochloric acid. Bismuth is practically eliminated and copper reduced to half. Comparative results using nitric acid in place of nitrate show a smaller copper reduction; (2) 20 per cent. of sodium nitrate and 60 or 70 per cent. of hydrochloric acid are used, the acid solution being treated with lime to recover the bismuth and the remaining ore extracted with aqueous ammonia to form ammonium tungstate which is crystallized from the solution.
Patent GB-1158641-A (GB)
Title: Improvements relating to Ground-Effect Craft
Inventor: PARKHOUSE ROBIN DERRICK
IPC: B60V1/04
Filed: 1965-04-14
Abstract: 1,158,641. Air cushion vehicles. R. D. PARKHOUSE. 14 July, 1966 [14 April, 1965], No. 16100/65. Heading B7K. An air cushion vehicle comprises a base structure 1 formed with side walls 2 to form therewith a plenum chamber 5 supplied with cushion-forming air by a fan 7, the side walls being formed with rests or pads 13 to support the vehicle when not cushion-borne. A flexible, inflatable skirt member 12 is secured to each wall 2 in such manner that when inflated it extends below the wall to assist in containing the cushion and when deflated it collapses so as not to become trapped beneath a side rest. Ports 18 in the members 12 provide for inflation of the skirts by cushion air, though this may be done by providing ducts through side walls 2. The skirts may be double walled on their lower sides to resist abrasion and the skirts may be formed in individual contiguous sealed sections.
Patent GB-690746-A (GB)
Title: Improvements in anchor nuts
Inventor: BRADNACK BERNARD ERNEST
IPC: F16B39/38
Filed: 1950-06-29
Abstract: 690,746. Anchor nuts, locking. W A L S A L L PRESSINGS CO., Ltd. June 22, 1951 [June 29, 1950], No. 16226/50. Class 89 (i) The casing 10 of an anchor nut is pressed to form a pocket the shape and depth of the nut but of such size that the nut is an interpress fit therein. Lugs are provided punched at 13 for rivets and the casing may be of light alloy. The casing is domed above the nut and has slits 16 extending to the corners and forming tongues 15 spaced from the nut and having V-edges 18 that engage the bolt thread with a locking action,
Patent GB-396204-A (GB)
Title: Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles
IPC: C23C22/83
Filed: 1932-06-09
Abstract: White coatings are produced on aluminium or aluminium alloy articles by forming an adherent oxide coating on the metal surface and then, without the application of external electrical energy, removing the coloured constituents of the coating by treatment with a suitable reagent.  The oxide coating may be produced either chemically, for example by treatment with a solution containing an alkali metal carbonate and a soluble dichromate, or anodically in an electrolyte of sulphuric or oxalic acid.  The reagent for removing the coloured constituents of the coating may be a solution of sulphuric acid, nitric acid, a mixture of sulphuric and nitric acids, or hydrofluoric acid, the latter being preferred in the treatment of anodically produced coatings. Details of the concentration, temperature, &c. of the coating solutions and of the acid solutions used for the whitening treatment are given in the Specification.
Patent GB-1184337-A (GB)
Title: Rotary Filling Machine for Filling Liquids into Receptacles
Inventor: MINARD EVERETT S
IPC: B65B43/60
Filed: 1967-04-10
Abstract: 1,184,337. Bottling, &c. conveyers. CHEMETRON CORP, 10 April, 1967 [15 April, 1966], No. 16326/67. Headings B8A and B8T. [Also in Division F2] A rotary table machine for filling receptacles R with liquid comprises a tank 12, Fig. 1, fast for rotation with a support frame 13 carrying holders 41 which retain the receptacles at an angle inclined to the vertical and push them upwards against valves 39, thereby opened to allow filling by gravity. The receptacle holders 41 each slide on a pair of rods (44), Fig. 3 (not shown), on the support frame 13, and have a cam roller 54, Fig. 1, which runs over a fixed annular cam track 55 to raise, &c. the receptacles R as the machine rotates. The tank 12 is steadied on the frame 13 by a member of telescopic adjustable-length struts 31 disposed arcuately around a drive shaft 14. To allow receptacles R of different heights to be filled, the tank 12 is adjusted along the shaft 14 by turning a nut 27, simultaneously adjusting the lengths of the struts 31. The machine is driven from an input shaft 18 through gears 17, 19. Conveyers.-Receptacles R are fed on to a table 62, Fig. 2, where they are spaced by a screw conveyer 60 driven from the machine input shaft 18, Fig. 1, through gears 20, 21, a shaft 22, a gear 66, a bevel gear (not shown) and a chain 67, Fig. 2, running over sprockets 63, 65. The shaft 22 also drives a starwheel 68, which draws the receptacles R one-at-a-time across the table to a position over a lifter bar 49, Fig. 1, of one of the holders 41. As the holder 41 is cammed upwards by rotation of the machine, the receptacle R is tilted inwards to lie against upper support arms on the holder. Filled receptacles R are lowered in the tilted position on to a table comprising two plates 70, 71, the outer plate 70 being slightly higher than the inner plate 71, Figs. 7, 8 (not shown). The filled receptacles are then slidden along the table, the plates 70, 71 sloping together until at a zone 73 they are coplanar and horizontal, and thence the receptacles are conveyed from the machine along a guide 72.
Patent GB-399276-A (GB)
Title: Improvements in and relating to stop motions for weaving looms
IPC: D03D51/00
Filed: 1932-06-10
Abstract: 399,276. Loom-measuring stopmotions. ROBINSON, J. and ROBINSON, T. L., Ingham Street Ironworks, Blackburn. June 10, 1932, Nos. 16373/32 and 4311/33. Addition to 371,106. [Class 142 (i).] The gravity-actuated bolt described in the parent Specification is associated with a member that can be moved into the path of a reciprocating part of the loom, such as the weft hammer or the sley, to effect stoppage of the loom. In the construction shown in Figs. 1 and 2 a bolt g, connected to the bolt of the measuring motion by means of a chain g<1>, is positioned within a slot d<1> formed in the free end of a lever b pivoted to the shuttle stand. the lever b being provided also with a slotted cranked portion d in which a projection e<1> on the weft hammer can move freely. On release of the main bolt, the member g is interposed between the projection e<1> and the lever band the resulting movement of the latter causes a bunter b<1> to dislodge the starting handle c. Alternatively the chain g<1> may be connected directly to a pivoted lever provided with a bunter that can be positioned between the lay and a spring starting handle. The sprocket p, Figs. 5 and 6, for driving the flanged discs forming the measuring track, is held against a shoulder on the spindle n by a washer q and a screw r, the washer being provided with keys q<1> which enter slots in the spindle. The sprocket can be rotated freely on the spindle by slackening the screw r and excessive movement of the latter is prevented by a screw r<1> which has a limited movement between spurs q<2> on the washer. A plain circular plate, having a notch on its periphery and a scale or the like on its face to facilitate adjustment, forms the end disc of the measuring track and it is clamped against the penultimate disc by means of a nut.
Patent GB-1019494-A (GB)
Title: Improvements relating to equipment for measuring optical properties
IPC: G01N21/03
Filed: 1964-04-20
Abstract: 1,019,494. Optical apparatus. FRITZ HELLIGE & CO. G.m.b.H. April 20, 1964 [April 19, 1963], No. 16376/64. Heading G2J. Rectangular glass precision vessels for holding samples of liquid for calorimetric or other optical investigations are manufactured by spacing two plane parallel plates 6a, 6b, which in use are at right angles to the direction D of the rays of light 8, an accurate distance apart by means of one or more gauges and cementing their edges to two glass plates 6c, 6d, which in use are parallel to the direction D so that the layers of cement 7 are also parallel to direction D. Thus the variable thickness of cement layers 7 does not alter the accurate spacing of plates 6a, 6b. The plates 6c, 6d may be of frosted glass so that the orientation of the vessel in an optical device is readily apparent.
Patent GB-1415926-A (GB)
Title: Fluid seal
IPC: F16J15/32
Filed: 1973-04-05
Abstract: 1415926 Seals REPCO RESEARCH PTY Ltd 5 April 1973 [10 April 1972] 16451/73 Heading F2B A fluid seal comprises a resilient annular body including surfaces 2, 3 which converge to define a sealing edge 4, one surface having a configuration arranged to urge fluid towards the sealing edge 4, and an annular barrier portion 9 being provided to obstruct flow away from the edge 4. The surface 2, located axially outwardly of the fluid to be sealed in use, may be formed with rib sections 7, 8, V-shaped recesses (not shown), or sinuous ribs or recesses (not shown), and the barrier portion 9 preferably has a rounded surface projecting, e.g. by 0À0025 -0À03 inch for use with a 2-4 inch diameter shaft. Respective rib sections 7, 8 may be angled at 24-30 degrees to each other.
Patent GB-1200736-A (GB)
Title: Improvements in and relating to fork lift trucks
Inventor: PAUL ADOLF
IPC: B66F9/16
Filed: 1967-04-11
Abstract: 1,200,736. Fork lift trucks. CROWN CONTROLS Ltd. 25 March, 1968 [11 April, 1967], No. 16462/67. Heading B8H. Fork tines 12, 13 are pivotable to an upright inoperative position by a pair of hydraulic rams 18, 19 mounted on the lifting carriage. The rams are connected by fluid lines 22, 23 to a distributer 24, containing a throttle valve and connected by a single fluid line to a control station and a reservoir. On actuating a control to lower the tines, the tines are lowered under the action of gravity and fluid from the rams returns to the reservoir through a non- return valve in the distributer 24 by-passing the throttle valve. In a modification (not shown), the tines are connected together and actuated by a single hydraulic ram.