baber/WOPTO huggingface dataset:
Patent GB-1438942-A (GB)
Title: Welding presses for joining sheets of weldable synthetic resin  plastics materials
IPC: B29C65/18
Filed: 1972-05-25
Abstract: 1438942 Seaming non-metallic sheet material GORDON LOW (PREFABRICATORS) Ltd 30 April 1973 [2.5 May 1972] 24644/72 Heading B5K A welding press for heat sealing synthetic plastics sheets, e.g. 0À020 to 0À125 inch thick for lining areas in a waterproof manner, comprises an inflatable bed 1 on which contiguous sheets are disposed in overlapping relationship, means for applying pressure between the overlapping edges of the sheets on the bed 1, the bed being inflatable by fluid pressure to apply pressure along the complete length of the overlapping edges, and means to heat the pressurized overlapping sheet edges to welding temperature. In one embodiment, Fig. 2, the bed 1 may be mounted on rollers, castors or ski-like sleds and comprises a top plate 2 over which an inflatable bag 3 is stretched and clamped, the plate 2 forming the lower platen of the press. A rod 7 slides in a bracket 6 supported by pillars 5 and has levers 8 pivoted thereto at 9 and pivoted at 10 to a toggle lever 11 pivoted at 12 to the bracket 6 so that raising of the lever 11 causes raising of the rod 7. A connector 13 connects the rod 7 to a head 14 which is located in a cavity in a block 15 and is held between washers 16. The upper platen 17 of the press is secured to the block 15 and has an operating surface portion 18 having a cavity 19 to receive the bag 3 when it is inflated and containing thermostatically controlled electrical resistance heating elements 20. In operation, the sheets to be welded, e.g. of synthetic rubber, are overlapped on the platen 2 with a filler agent, e.g. a tacky tape or strip of butyl rubber, therebetween. The platen 17 is lowered and the elements 20 are heated to 140-190‹ C. and a pressure of about 75 lbs. is applied. During welding, the bag 3 is inflated by the supply thereto of compressed air to apply upward pressure on the edges. Sheets of heat resistant material, e.g. nylon or polyethylene terephthalate sail cloth, may be interposed between the overlapping edges and the platens. In a second embodiment, Fig. 5, an inflatable bag 33 is mounted on a lower platen 35 on the bed 30 and electrical resistances 36 are secured above an upper platen 35 having a cavity to receive the inflated bag 33. The platen 35 is mounted on a support 37 carried by piston rods 38 movable within three hydraulic or pneumatic cylinders. Two cylinders 39a are aligned and the third cylinder 39 is off-centre.
Patent GB-231208-A (GB)
Title: Improvements appertaining to valve operating mechanism for internal combustion engines
IPC: F01L13/00
Filed: 1924-07-04
Abstract: 231,208. Keighley Gas & Oil Engine Co., Ltd., and Hutton, J. July 4, 1924. Valve gear.-The bearing 3 of the cam shaft 2 is formed with an arm 5 supporting the pivot 6 of the. valve levers 8, 8<a>, 8<b>, 8<c> which are actuated by cams 7, 7<a>. The levers 8, 8b actuate the inlet valves 12, 12<a> respectively of the two cylinders B. B<1>, by connections 10, 11, 11<a>, 13, 14, while the levers 8<a>, 8<c> actuate the respective exhaust valves 17, 21 through connections 15, 16, 16a, 18, 19. Regulating.-When liquid fuel is used, the fulcrum 30, Fig. 5, of the fuel-admission valve lever 31 is adjusted by means of a wedge 29 connected by an arm 27 to a shaft h which is connected by levers 25 to the governor 28. In the case of a gas engine, the shaft h is connected by a lever 37, Fig. 6, and link 38 to the pushrod 35 actuating the inlet valve 12, the lower end of the rod 35 being adjusted over a quadrant 36 on the valve lever 8<h>.
Patent GB-584103-A (GB)
Title: Improvements in or relating to the fuel containers of petrol lighters
IPC: F23Q2/42
Filed: 1944-12-09
Abstract: 584,103. Pyrophoric lighters. MOORE, H. E. Dec. 9, 1944, No. 24729. [Class 75 (iii)] The fuel container of a petrol lighter consists of an open-mouthed hollow shell or body 1, either of pressure-moulded plastic or die-cast metal alloy, peripherally recessed to receive a metal top plate 7 which is secured in position by the flint tube 5. The bottom of the shell may have a part 2 of increased thickness which is bored at 3 and 4 to receive the filling cap and the conical lower end of the tube 5. The top of the shell is formed with threaded holes to receive the upper end of the flint tube and the wick nozzle 8. The head of a screw 9 supporting the flint spring 11 fits the hole 4. The flint mechanism may be a self-contained unit attached to the fuel container as described in Specification 583,155.
Patent GB-442781-A (GB)
Title: Improvements in vacuum cleaners
IPC: A47L9/14
Filed: 1934-08-28
Abstract: 442,781. Vacuum cleaners. ELECTRIX, Ltd., Sterling Works, Dagenham, Essex, and SONES, W. H., 295, Lynton Road, Bermondsey, London. Aug. 28, 1934, No. 24788. [Class 8 (i)] In a vacuum cleaner of the type wherein a filter bag and fan are arranged in a casing, the filter bag is detachably connected to the end cover of the casing so that it can be removed with it. The filter bag c is attached to a ring e secured to the cover b by a keyhole connection g, a bayonet joint, spring catch or other type of detachable joint. An extension of the ring is provided with a rubber strip f to form a joint between the casing a and the cover b. In a modification the ring e is detachably connected to a supplementary cover which may be detachably connected to the cover b.
Patent GB-1306463-A (GB)
Title: Blends of resin and gum plastic
IPC: C08L81/06
Filed: 1970-05-22
Abstract: 1306463 Polysulphone resin/ABS blends UNIROYAL Inc 22 May 1970 [4 Aug 1969] 24816/70 Addition to 1196066 Headings C3G C3P and C3R A thermoplastic resin composition comprises a blend of an acrylonitrile-butadiene-styrene gum plastic and a linear polyarylene polyether polysulphone resin composed of units of formula The weight ratio of the polysulphone resin to the gum plastic may be from 1 : 9 to 9 : 1. The gum plastic may be a blend of a copolymer of acrylonitrile, butadiene and styrene with a polymer of alphamethylstyrene and acrylonitrile or a mixture of butadiene-acrylonitrile rubber with a styrene-acrylonitrile resin. The gum plastic also may be obtained by grafting styrene and acrylonitrile on polybutadiene or a butadienestyrene copolymer: styrene-acrylonitrile resin and/or butadiene-acrylonitrile rubber may be mixed with such a graft copolymer. An example is given. Uses.-Mouldings and laminates.
Patent GB-641875-A (GB)
Title: Improvements in the colouration of secondary acetone soluble acetate yarns and fabrics
IPC: D06P3/40
Filed: 1948-09-23
Abstract: Textile materials of secondary cellulose acetate are coloured with vat dyestuffs with little or no saponification by applying the process of the parent Specification and using as reducing agent either formamidine sulphinic acid or a solution of sodium hydrosulphite stabilized to pH 10.5-11.4 with an alkaline substance. The latter may be calcium hydroxide or calcium cyanamide, caustic soda being less suitable; no further addition of alkali is then necessary in the preparation of the leuco compound.  The dyebath is thereby rendered stable and further additions of dyestuff and/or reducing agent may be made during the course of the dyeing operation. The material may be coloured by immersion or by mechanical impregnation, e.g. padding.  In the examples: (1) a mixed fabric of cellulose acetate and cotton is dyed with Caledon Brilliant Purple 4RPS vatted with formamidine sulphinic acid, sodium carbonate and ammonia, the bath containing ethyl alcohol; the cellulose acetate alone is coloured; (2) formamidine sulphinic acid is made in situ from thiourea and hydrogen peroxide and Caledon Dark Blue GS vatted in the solution with the addition of ammonia and sodium carbonate; ethyl alcohol is added and a cellulose acetate fabric dyed in the bath; (3) cellulose acetate is dyed in a bath of Caledon Brilliant Red 3BS vatted with sodium hydrosulphite stabilized with calcium cyanamide, ethyl alcohol also being present; (4) Caledon Red X5B is vatted with formamidine sulphinic acid, ammonia and ethyl alcohol; a mixed fabric of cellulose acetate and cotton is padded with this solution, the acetate alone being coloured.
Patent GB-410662-A (GB)
Title: Improvements in self-propelling lead pencils
IPC: B43K21/18
Filed: 1933-09-08
Abstract: 410,662. Pencil holders. JOHNSSEN, H., 133, Wilhelm Spaethstrasse, Nuremberg, Germany. Sept. 8, 1933, No. 24891. [Class 146 (iii).] A pencil holder is provided with a spring- pressed pusher having a double rack cooperating with a detent which, on operation, permits the spring to feed the pusher and lead forward one step through a point section normally spring-pressed to forward position, but, on application of axial force, slidable relatively to the casing to enable the lead to be pushed rearwardly into protected position, the pusher being forced against the action of its spring past the detent. The pusher 6 is slidable in a bore 3 in the rear end of the casing 1 and has teeth on two edges, the two sets of teeth being relatively offset and having front faces arranged at right angles to the axis of the pusher and inclined rear faces. The detent 9, having a rectangular opening of a width to enable the pusher to slide therein and of a length slightly less than the overall height of the teeth, is carried by a slide 5 movable in a transverse bore in the casing. A spring 8 acts between a shoulder 3<a> in the casing and a shoulder 8<a> on pusher, so that, on moving the slide 5 from one extreme position to the other, the pusher is permitted to move forward by the amount of staggering between the sets of teeth. The extension 7 of the pusher passes into the point-section which is formed of a tapered portion 12 screwing into the casing, a plug 17 screwing into the portion 12 and supporting a spring 16, and a slidable point-element 18 split at the forward end to grip the lead and normally pressed forward by the spring 16 against a stop shoulder. To withdraw the lead into the casing, it is pushed against a hard surface, and the rear inclined faces of the rack teeth actuate the detent. If the projecting length of lead is so worn that it is too short to press the pusher inwards a sufficient amount, the pressure is received by the point-element 15 which recedes against the action of the spring 16 to permit the pusher to be forced past the detent, and is returned to normal position when the pressure is released.
Patent GB-404244-A (GB)
Title: Improvements in or relating to the formation of articles from cast slag
IPC: B28B1/54
Filed: 1933-09-08
Abstract: 404,244. Moulding slag. NORSKE AKTIESELSKAB FOR ELEKTROKEMISK INDUSTRI, 18, Kongensgate, Oslo, Norway.- (Assignees of Bartholomew, T. ; 808, Diamond Bank Building, Pittsburg, U.S.A.) Sept. 8, 1933, No. 24913. Convention date, Sept. 9, 1932. [Class 87 (ii).] Slag blocks are cast with unequal cooling of the surfaces, so that the distortion due to cooling can be confined to specific areas of the block. The invention is applied to a slag block having two through holes, the walls of the holes being formed initially as a thin distortible skin by momentary chilling, while the outer surfaces of the block are fixed permanently by continuous chilling against the cooled mould surfaces. By this process all the distortion occurs at the interior walls of the holes, thus enabling blocks of standard dimensions to be cast accurately. A series of mould parts 2, Fig. 1, which fit together in pairs as shown in Fig. 6 to form mould spaces 8, are mounted on an endless chain and carried under a slag delivery spout 15. Two water-cooled plungers 43, Fig. 13, are lowered into each mould in turn by the initial downward movement of shaft 19, Figs. 1 and 13, following which, the member 52 trips the projections 58 and releases the member 51, thus allowing a top die 48 to fall on to the mould, the parts then being in the position shown in Fig. 14. On the return stroke the die remains on the mould after the plungers have been withdrawn, until the member 52 again trips the levers 60 and then carries the member 51 up with it during the remainder of the stroke so that it is re-engaged automatically by the latches 57. When the mould reaches the next release the ends of the levers 30 from offset parts of the slots 25, thus allowing the levers 23 to complete their downward movement without operating the pawl. Thus after the initia stage, it is subjected to water sprays 62 which pass upwards into the mould passages 9, Fig. 7, and then fall by gravity into the corresponding passages of the inverted moulds on the return run. The articles fall on to a conveyer as the moulds are opened in passing round the sprocket 10. The conveyer is driven intermittently by the pawl 34, Fig. 1, operated by the slotted bars 23 which derive their movement from the shaft 19. A spring-controlled lever 39 co-operates with a fixed stop on the frame to movement in which the conveyer is advanced, the moulds remain stationary during the plunger-inserting and withdrawing period. The final upward movement retracts the pawl and re-positions it for the next stroke. A modified arrangement of mould on the chain is described.
Patent GB-259594-A (GB)
Title: A mechanical closure for collapsible tubes
IPC: B65D47/24
Filed: 1926-10-07
Abstract: 259,594. Onoplat Co., (Assignees of Lentz, H.). Oct. 7, 1925, [Convention date]. Stoppers w i t h valves. -- Relates to the closure for collapsable tubes &c. described in Specification 252,146 and comprising a cap 5 rotatable upon a cylindrical neck 2 into open and closed positions and formed with a central discharge aperture 8 adapted to be closed by a centre piece 3 in the neck. The cap co-operates with the neck to provide two valve-like seating surfaces, one at the outer edge 6 of the cap and one at the discharge aperture 8, a fluid tight closure also being formed between them by the cap and the cylindrical neck. According to the invention, the cap is secured to the neck by a pin 12 which is threaded through diametrically opposite helical slots 10 in the neck 2 and guided by their upper and lower surfaces 15, 14 so that the cap is raised or lowered when it is rotated on the neck. The helical slots have horizontal lower portions which permit the closure to be locked in the closed position for transport. In a modification, the crown of the cap is made resilient to compensate for any irregularities in the valve seats.
Patent GB-747468-A (GB)
Title: Rewinding cassette for tapes, filaments or wires
IPC: G11B23/04
Filed: 1954-08-27
Abstract: 747,468. Magnetic recording apparatus. STEIDINGER, S., and STEIDINGER, O., [trading as STEIDINGER KOMM.-GES., GEB.]. Aug. 27, 1954 [Sept. 7, 1953], No. 24979/54. Class 40(2) In a rewinding cassette 1 for filaments and wires, such as for magnetic recording, supply and take-up reels 7, 8, respectively, are freely mounted for axial movement on a driving shaft 2 carrying a grooved disc weight 3 whereby the upper reel 8 is frictionally driven by the disc 3, further annular axially displaceable ring weights 9, 10 being provided so that additional mass is given to each spool when in the uppermost position. The wire passes from spool 7 over a guide 5, once round the grooved disc 3, over a further guide 4 and thence to the take-up spool 8. The ring weights 9, 10 are totally covered with velvet, to effect silent operation and smooth braking.
Patent GB-820727-A (GB)
Title: Improvements in or relating to polymers from propylene
IPC: B01J23/882
Filed: 1955-08-31
Abstract: Solid polypropylene which may be crystalline, resinous or rubbery, may be obtained using the catalysts and processes disclosed in the parent Specification and optionally using alkali metals or calcium hydride as promoters.  The products may be fractionated, stretched, formed into moistureproof films or into fibres, and may be subjected to the after-treatments and applications disclosed in the parent Specification.  The polymers may also be nitrated, treated with quinones, vulcanization agents, peroxides, or radiation (whereby cross-linked materials may be obtained), or may be oxidized and then graft polymerized with styrene, vinyl chloride, vinylidine chloride or cyanide, acrylonitrile, or methyl methacrylate.  Compositions may be formed with polyethylenes, polyisobutylenes, natural and synthetic rubbers, paraffin wax, petrolatum, vinyl resins, lubricating oils and greases, and solvents such as xylene. Typical applications specified are in packaging materials, vapour barriers, dielectrics; coatings on paper, wood, leather or concrete; adhesives, sealing resins, laminates, containers, tubing, and sponges.  Specification 748,634 is referred to.
Patent GB-295848-A (GB)
Title: Improvements in the manufacture of phosphoric acid and phosphates
IPC: C01B25/22
Filed: 1927-09-22
Abstract: 295,848. Weber, I. E., Alcock, H. E., and Laporte, Ltd., B. Sept. 22, 1927. Phosphoric acid or a mixture containing phosphoric acid or acid phosphate or both, made by reacting a mineral phosphate with sulphuric acid in quantity at least sufficient to convert the phosphate into superphosphate, is heated to a temperature not less than 150‹ C. but below that at which pyrophosphoric acid is formed to destroy organic matter. For example, superphosphate may be heated at 150-200‹ C. and then leached with sulphuric acid to give phosphoric acid; or free phosphoric acid obtained by reacting rock phosphate with sulphuric acid, with or without separation of calcium sulphate, may be belted to like temperatures.
Patent GB-1420238-A (GB)
Title: Choke-resistor combination
IPC: H01F27/30
Filed: 1973-05-25
Abstract: 1420238 Inducters TRANSFORMATOREN UNION AG 25 May 1973 [31 May 1972] 25032/73 Heading HIT [Also in Division H2] A choke 1 for high-power smoothing, together with a parallel-connected resistance 2, is built into a coolant-filled tank 3, the choke winding 1 being of cylindrical form and arranged coaxially within the resistance winding 2 which is also of cylindrical form but bifilar and non-inductive. The choke 1 and resistance 2 are centred between insulating rings 8 and clamped between yokes 9 by tie-rods 10. Preferably the choke and resistance windings are composed of disc coils, the resistance 2 being wound of non-magnetic material. Both windings, arranged in a vertical axis, have their upper ends connected to a high-tension leadthrough 4, and their lower ends to a low-tension lead-through 5. The resistance winding 2 may act as an electrical screen for the choke 1. The arrangement of the windings minimizes electric fields therebetween, but insulating cylinders 11 may be provided to reduce still further the risk of breakdown. The tank 3, which may be provided with cooling tubes 7, is closed with a cover 6 carrying the lead-through terminals 4, 5. Preferably the tank 3 and the cover 6 are of aluminium sheet or of steel sheet with aluminium screening.
Patent GB-468321-A (GB)
Title: An improved combination lock
IPC: E05B37/08
Filed: 1936-09-14
Abstract: 468,321. Permutation locks. BURNS, F. Sept. 14, 1936, No. 25033. Convention date, June 23. [Class 44] The lock comprises a rotatable cylinder 20, anc a series of smaller con centric cylinders 13 each having a radial projectior 27, and a cut-out slot in the cylinder end abutting a locking plate 6. The latter has a number of projecting teeth 8 separated by slots 15 which accommodate the ends of the cylinders 13. The other ends of these cylinders fit in grooves 19 in a plate 17. A spindle 16 is secured to a disc 11 having grooves 12 into which the cylinders 13 fit, and a'radial slot 14. To operate the lock, the cylinder 20 is rotated until a projection 25 engages a projection 27 on an inner cylinder to rotate it through a certain angle. Continued rotation causes each cylinder in turn to be engaged by the projection on the next outer cylinder, until all cylinders are rotating in unison. A dial 34 is then rotated clockwise and anti-clockwise alternately so that each cylinder 13 is turned through a certain angle to place its cut-out slot in line with the slot 14. The dial 34 has a spindle 33 with a T-shaped end 32 which drives the cylinder 20. When all the cut-out slots are in line, a knob 36 is pressed to place the end 32 free from the cylinder 20 (see dotted line in Fig. 3). This motion causes dowels 44, on a disc 43, to engage in holes in a pinion 45, which is rotated to withdraw a bolt 41. A second rack 40, which is attached to the plate 6 by an arm 42, moves with the latter when the pinion is rotated. The markings 49 are raised so that the dial 34 may be operated by sense of touch in the dark. The invention may be applied to bags, or to the switching mechanism of radio sets.
Patent GB-309856-A (GB)
IPC: B61L5/06
Filed: 1928-08-31
Abstract: 309,856. Vereinigte Eisenbahn-Signalwerke Ges. April 16, 1928, [Convention date]. Electric operation and control.-In electric operation of railway points, an intermediate member, arranged inside the motor casing. and between the motor and the point rod, effects the movement of locking mechanism after the positioning movement has terminated. The intermediate member consists either of a balancing lever connected at one end to the point rod and at the other end to the lock, or of a differential or planetary gear. In the latter case, Fig. 7, the motor is geared to a wheel T<5> in mesh with planet wheels T<2>, T<3> and crown wheel housing G<1>. The wheels T<2>, T<3> are carried by a swinging support T<1> having a striker T<7> with faces T<10>, T<11> which engage abutments K<1>, K<2>. The support T<1> is clutched to a wheel T<8>, Fig. 3, engaging a rack N<1> on the point rod N. The housing G<1> is provided with cams G<3> engaging contact arms D, and with a cam projection G<4> which engages behind bolts N<3> on the rod N where one of the faces T<10>, T<11> has engaged its abutment to prevent further movement of the support T<1> and rod N. A slip coupling may be_provided in the rod N and consists of a spring-pressed ball A<2>, Fig. 2, carried by a. rod W from the points, and engaging a recess A<1> in the motor rod N. In this case, the contact levers also engage coacting recesses in the rods N, W.
Patent GB-778911-A (GB)
Title: Improvements in firegrates
Inventor: ROBERTS GEORGE CECIL
IPC: F23H17/12
Filed: 1954-08-30
Abstract: 778,911. Furnace grates. MOLETON FOUNDRY CO., Ltd. Aug. 22,1955 [Aug. 30, 1954], No. 25120/54. Class 51 (1). The fire-grate shown in Fig. 1 consists of a unitary casting in the form of a rectangular frame having sides 10, 11, ends 12, 13 and firebars 14, 15, 16, the outer parallel faces 17, 18 of respective ends 12, 13 being inclined to the face of the firegrate such that when the end 13 rests flush on the bottom of a furnace (such, for instance, as that described in Specification 778,910), the grate will lie at an angle of 60 degrees to the horizontal. Lugs 19 are intended to bear against a fixture to support the grate in this position. The end 12, bars 14, 15, 16, are of tapered cross-section, their upper faces being horizontal when the grate is in its working position. The large space between the end 13 and the bar 14 permits easy removal therethrough of ashes from the firebox of the furnace. The fire-grate shown in Figs. 3, 5, 6 comprises part 24, sides 25, base 26 and bars 33, the latter being air cooled to some extent by having plots 36 opening from recesses 37 formed in their underfaces. In assembly of the grate lugs 29 on part 24 engage slots 28 in sides 25, whilst projections 30 on the lower edges of sides 25 engage slots 31 in the base 26. The bars 33 are supported in position by the interengagement of recesses 34 on their undersides and projections 32 formed on the inner faces of sides 25. This fire-grate functions in like manner to that of Fig. 1 and in addition provides for combustion air to be admitted through the bars themselves through the slots 36.