baber/WOPTO huggingface dataset:
Patent GB-1032532-A (GB)
Title: Improvements in or relating to reinforced bitumen coverings self-protected by sheets of a metal having a high coefficient of expansion
IPC: E04D13/15
Filed: 1964-03-24
Abstract: 1,032,532. Laminates. SOC. NOUVELLE SIPLAST. March 24, 1964 [April 12, 1963], No. 12400/64. Heading B5N. A roof covering comprising a bitumen layer 1 connected to an aluminium, copper, zinc or other metal web 2 is characterized in that lines of weakness either in the metal web, or in its connection to the bitumen layer are provided at spaced intervals along the roof covering to prevent wrinkling upon expansion of the metal. In one example the metal web is thinned out by rolling along lines 3, transverse to the direction of elongation. Alternatively strips of non- adherent material 5 such as silicone or soft petroleum-bitumen are interposed between the bitumen and the metal. The bitumen layer may be reinforced by glass fibre sheet or textile fabric. In an example a web of glass fibre fabric is fed from a roll through a vat containing molten bitumen which adheres thereto and an aluminium web fed from another roll passes through corrugating rollers and the corrugated web is provided with spaced transverse strips of anti-adhesive soft bitumen by means of revolving blades which dip into a container fed with the soft bitumen. The reinforced bitumen and coated metal web are applied against one another to form a composite web which is finally cooled, sand-blasted and trimmed.
Patent GB-330074-A (GB)
Title: Improvement in engine indicator and spark plug
IPC: H01T13/40
Filed: 1929-04-22
Abstract: 330,074. General Motors Research Corporation. Jan. 24, 1929, [Convention date]. Addition to 808,772. Elastic-diaphragm pressure gauges.-The electrical pressureindicator of the parent invention is combined with the spark plug of an internal combustion engine. The frame 16 is adapted to screw into the ordinary spark plug hole and is hollowed out in the centre into which hollow an arm 24 rigid with the member 16 protrudes. Passing through a hole in the arm to which it is secured by nuts and through a bore in the member 16 is a thrust member formed by a metal tube 30 ending in a diaphragm 26 secured to the frame. The tube encloses the insulator tube 80 and the central electrode 82 of the spark plug. At the upper end of the bore a terminal 86 is provided to connect with the ignition system. The side electrode 88 is mounted on the diaphragm but may be on the member 16. The arm 24 is provided with recesses on opposite sides to engage conical studs 44 on the adjacent end plates of carbon pile rheostats 34, 36 forming the variable resistance arms of a Wheatstone bridge equipped with fixed resistances 62, 64 and an oscillograph 68. Studs 52, 56 are insulated from the frame and connected to the ends of the rheostats, while the stud 54 is connected to the frame. Adjusting screws 40 on the frame engage the end plates of the rheostats. The vibrations of the diaphragm are transmitted by the thrust tube 30 to the arm 24 the movements of which vary the carbon resistance and cause corresponding defections of the oscillograph. Compressed air is delivered through a duct 90 to cut the diaphragm and the central electrode.
Patent GB-514256-A (GB)
Title: Improvements in and relating to track vehicles
IPC: B61H7/02
Filed: 1938-04-26
Abstract: 514,256. Track brakes. BAVIN, T., and CROOK, A. E. April 26, 1938, No. 12437 [Class 103 (i)] A track brake for vehicles, particularly such which run on inclined tracks comprise a number of brake shoes that are applied to the track by spring or weights, which may be the weight of the vehicle, and which may be released by hand or a centrifugal device, the arrangement being such that substantially equal pressures are applied to the shoes irrespective of unevenness of the track. Brake shoes 21 mounted on levers 19 on shafts 15, 16 are applied by weighted levers 24 normally held released by the stepped portions of an arm 28 the end of which is engaged between a pin 31 and a vertically slidable member 35 both mounted on a bar 34 longitudinally slidable of the vehicle. The bar 34 is normally held in the position shown by a lever 52 having a notch 45 engaging the edge of an aperture in the end of the vehicle. When the lever 52 is released a spring 41 moves the bar 34 to the left turning the arms 28 about the pivots 29 and releasing the weighted levers 24 to apply the brakes. The lever 52 may be released by a stirrup 47 operated by a hand lever or a bell-crank 62 operated by a centrifugal device driven from the vehicle wheels and comprising a member 58 mounted in a radial groove in a drum 53. In a modification applied by the weight of the vehicle, the vehicle body is vertically movable on the wheel axles and carries brakes fixed to it. The vehicle body is normally held raised by levers having rollers engaging the tops of the axle boxes which are adapted to. be released by the longitudinally movable bar 34. The brake shoes are vertically slidable against springs. In a further modification where the brakes are applied by the weight of the vehicle the axle boxes are mounted on horizontal levers connected by link and lever to toothed gearing normally held by a pawl adapted to be released by the bar 34.
Patent GB-1344100-A (GB)
Title: Gear pumps
IPC: F04D13/12
Filed: 1971-04-30
Abstract: 1344100 Rotary positive-displacement pumps. CHANDLER EVANS INC 30 April 1971 [30 April 1970] 12445/71 Heading F1F In an hydraulic gear pump a sealing block 24 containing a discharge channel 36 is held against the teeth of gears 20, 22 by springs 34, 288, 290 and a piston 30. Leakage across the end faces of the block and the gears is obviated by plates 298, 300. Spring and pressure loaded pistons 306, 308 urge the plate 300 towards the plate 298. Inlet and outlet conduits 16, 38 are disposed as shown. Pressure in the channel 36 is transmitted to the piston 30 through an orifice 42 and conduit 40. To unload the pump the block 24 is retracted by pressure from an external source applied to the piston through a conduit 174. Alternatively, the conduit 40 is connected to a low-pressure reservoir through a conduit 44, the springs 34, 288, 290 per se being unable to resist the pressure generated by the gears. When the conduit 40 is connected to said reservoir sufficient pressure reduction is ensured by the orifice 42.
Patent GB-375928-A (GB)
Title: Process and apparatus for the coking of pitch and similar bituminous substances
IPC: C10B55/00
Filed: 1931-04-28
Abstract: 375,928. Coking pitch. ELKINGTON, H. D., 20, Holborn, London.-Ges. f³r Teerverwertung; 49, Varzinerstrasse, Miede. rich, Duisburg, Germany.) April 28, 1931, No. 12503. [Class 55 (ii).] Pitch obtained from coal, brown coal, or petroleum, or pitchy residues from hydrogenation, or extraction processes, or from the distillation of shale oil, are coked in coke ovens of the kind used for coking coal, the material being charged in a liquid or solid state. The pitch may be charged in pans or crucibles, which may be made of pitch coke or the like. The width of these ovens should be equal to or greater than their height to prevent " climbing," and they are heated from the bottom only. After coking, air is introduced to complete expulsion of the volatiles and supplementary heating by radiation from the flat top of the oven is used to burn off residual distillation gases above the charge. The pitch obtained from the distillates may be coked to give a high grade coke free from ash, and suitable for electrodes.
Patent GB-443467-A (GB)
Title: Improvements in machines for casting metals
IPC: B22D17/04
Filed: 1935-04-26
Abstract: 443,467. Casting-machines. VOHNSEN, V. C., and VOHNSEN, R., 56, Syrefabriksvej, Kastrup, and FOSKJAER, I., 22, Vermundsgade, Copenhagen, both in Denmark. April 26, 1935, No. 12545. Convention date, April 26, 1934. [Class 83 (i)] Relates to machines for ejecting molten metal under pressure from a cylinder closed by a cap into a substantially horizontally d.isplaceable mould, and consists in means for bringing the mould into and out of position against the outlet nozzle of the cylinder. As shown, a pressure cylinder 1 has a piston which is controlled and operated by valves 36, 37, 38 and which transmits motion to a rod 3 carrying a cross frame 16 with rollers 17. The rollers operate against cam surfaces 22, 22<1> to bring the mould and its inlet nozzle 24 into and out of position to receive metal from the outlet 12 of the metal supply cylinder 6. The cross frame 16 is attached to a rod 5, Fig. 4, working with limited movement in a piston 5<a> arranged in the cylinder 6. The cylinder after filling with metal is closed by a cap 10, provided with a supply passage 11, which is cleared after operation by means of a device 52 rotated by a handle 56. In operation, movement of a handle 42 to the position 42<1> operates through gearing the valves to connect the lower part of the cylinder 1 to air pressure and upper part to the atmosphere. The piston rod 3 is raised and the rollers 17 contact with the cam surface 22 to move longitudinally rods 20 supporting a shaft 29 carrying a pinion 28 gearing with a rack 26 attached to the mould 23. Movement of the handle to the position 42<1> moves a roller 45 to the position 45<1> for engagement by a projection 48 when the piston rod 3 has risen some distance in its stroke. Thereupon the projection 48 raises the roller 45 to the position 4511 corresponding to a position of the air valves in which pressure air is conducted to the upper part of the cylinder 1 and the lower side is exposed to the atmosphere. Free movement of the rod 5 in the piston 5<a> enables complete closure of the metal supply outlet 12 by the inlet nozzle 24 of the die before the metal is forced into the mould.
Patent GB-649835-A (GB)
Title: Improvements to helical pumps
IPC: F04C2/08
Filed: 1948-05-07
Abstract: 649,835. Meshing-screw pumps. ETABLISSEMENTS POMPES GUINARD. May 7, 1948, No. 12585. Convention date, May 9, 1947. [Class 110(ii)] The pump comprises two, or more, parallel worms 1, 2 in which the opposite flanks a, b, of a thread have different profiles, each flank of one worm being in contact with a flank on the other worm, having the same profile. Each pair of mutually contacting thread-flanks touch continuously along a sealing line extending in opposite directions from the intersection with the plane containing the axes of the two worms along the pitch circle of each worm to its intersection with the tip circle of the other, and thence along such tip circle to the plane containing the worm axes. When the worms 1, 2 are rotated in mesh, the point b, on the pitch circle 8 of worm 1, in moving from b to c traces on worm 2 an arc of an epicycloid lying in a plane perpendicular to the worm axes and extending from the tip circle to the pitch circle 8' of worm 2. Similarly, the point c of worm 2, traces on worm 1 a similar epicycloidal arc cd. The point b on the tip circle of worm 2, in moving from b to a, traces on worm 1 an arc of a hypocycloid in a plane perpendicular to the worm axes and extending from the pitch circle 8 to the base circle of worm 1. Point d, of worm 1, traces a similar hypocycloidal arc on worm 2 in moving from d to e. Elsewhere than along the sealing lines there are clearances between the flanks 6, 7 and 9, 10 through which liquid can pass.
Patent GB-312684-A (GB)
IPC: B07C5/344
Filed: 1929-04-23
Abstract: 312,684. Krupp Grusonwerk Akt.- Ges., F. May 31, 1928, [Convention date]. Thermionic relays.-In a method of separating or sorting materials of different electric, dielectric, or magnetic properties in which the materials are brought piece by piece into an electric or electromagnet field and the reactions of the material are utilized with the aid of thermionic valves or electron discharge tubes to operate the separating device, the valves &c. are arranged in a tripping connection so that the sorting does not depend on the limit at which the separator or a preceding layer becomes operative but only on the value of the limit at which the tripping connection becomes operative. In one form, shown in Fig. 1, the pieces of material fall in the direction of the arrow X between the plates 1, 2 of a condenser, the plate 1 being connected to the positive pole and the plate 2, through a high resistance 3, to the negative pole of a source of current. If a piece of material has a high dielectric constant the difference of potential betweeen the plates 1, 2 will disappear and a current impulse will be produced This impulse is transmitted to a " tripping " connection comprising a condenser 4 and a valve 5 and the current impulse will act through the condenser 4 on the grid of the valve 5 so producing a positive charge of the said grid, this charge being equalized in the valve by the electron current therein. When the falling body leaves the field between the plates 1, 2 the current impulse will be reversed and grid of the valve 5 will show a negative voltage. If this voltage exceeds that which can be compensated by the grid currents, the valve 5 will become choked for a certain length of time and then the relay 6 will become operative. The relay 6 controls the separating device 7 comprising an electromagneticallycontrolled pivoted flap 10 mounted between channels 8, 9. The relay 6 at the same time closes the contact 11 and the grid of the valve 5 is again given its rest potential. In another form, the material falls through two coils wound in opposite directions to each other and connected to a source of alternating current. A coil is arranged between these two coils and if a piece of material has a considerable amount of permeability an alternating current will be induced in the centre coil. The tripping connection comprises a gas-filled valve connected to the coil and by a potentiometer to a source of current, a choking coil connected to the valve and one end of the potentiometer keeping away from the latter the current induced in the centre coil. The current from the centre coil produces an increase in the voltage connected to the valve and if this increase is sufficient the valve becomes lighted and allows a strong current to pass through this current operating a mechanical relay controlling the separating device. Tripping connections are also described in detail for use with tuned oscillating valve circuits. Specifications 220,283, [Class 37, Electricity, Measuring &c.], is referred to.
Patent GB-992910-A (GB)
Title: Improvements to mechanical grabs or buckets
IPC: B66C3/16
Filed: 1964-03-25
Abstract: 992,910. Grab buckets. POCLAIN. March 25, 1964 [May 7, 1963], No. 12636/64. Heading B8H. A grab bucket, comprising two jaws 2, 3 pivoted at 4, 5 to a frame 1 and interconnected by a link 16, is opened by retracting an hydraulic ram 8 which is pivoted at 6 to the frame 1 and at 12 to a lever 10. The lever 10 is connected to the jaw 2 by a link 14 and is pivoted at 11 to the frame 1. In a second embodiment, Fig. 2 (not shown), the link 16 is omitted and a second lever is connected at its ends by links to the jaw 3 and to a fixed point on the frame 1 and is pivoted at 12 to the ram piston rod.
Patent GB-394467-A (GB)
Title: Improvements in friction couplings
IPC: F16D43/10
Filed: 1932-05-02
Abstract: 394,467. Brakes. STEEN, K. E. and SUNDSTROM, E. F., 7, Sodra Jarnvagsgatan, Sundsvall, Sweden. May 2, 1932, No. 12655. Convention date, April 30, 1931. [Class 103 (i).] In friction clutches or brakes of the kind in which centrifugal balls, rollers, or wedges 2 exert a wedging action on friction members 3 disposed on each side thereof and bring them into frictional engagement with the driven part of the coupling, the driving hub 1 carries axial guides for the friction members and projections 11 which form radial guides for the centrifugal members. As shown, the projections 11 are carried by a flange 10 on a disc 9 integral with the hub 1, this flange also being formed with slots 13 constituting guides for projections 12 on the friction members. The driven member of the coupling comprises a pair of discs 4 journalled on the hub 1 and formed with flanges 14 by which they are secured together. The surfaces at which friction occurs may be normal to the axis, as shown, conical, or formed with ribs and grooves. Ventilation is effected by apertures 6, 7 in the driven member, radial flanges 5 on the hub, and grooves 8 in the friction members. An elastic band 16 preferably surrounds the centrifugal members to counteract the effect of gravity thereon. The power transmitted may be controlled by varying the distance between the members 4, and if desired a coupling may comprise a plurality of the units described.
Patent GB-1172193-A (GB)
Title: Blanks and apparatus for Forming Molded Plastics Articles and Articles produced thereby
IPC: B29C51/10
Filed: 1968-03-15
Abstract: 1,172,193. Drawing injection moulded blanks. OWENS-ILLINOIS Inc. 15 March, 1968 [16 March, 1967], No. 12696/68. Heading B5A. [Also in Division B8] A rimmed container is drawn from an injection moulded thermoplastic blank comprising a rim portion, a central portion and an intermediate portion which is thinner than the central portion. As shown in Fig. 1, the blank is moulded in a mould defined by a lower block 11, a ring element 19, and a central element 10 slidable within the ring element. The ring element is cooled by passages 29 to set the rim of the blank whilst the central element is either heated or cooled by passages 34 according to whether or not the blank is to be immediately drawn or stored before use. In the described embodiment the ring element and central element are moved with the blank to a position over a mould 36 into which the blank is drawn by a plunger 31 slidably located within the central element. The drawn blank is finally expanded into contact with the mould 36 by air from passage 33 formed between the plunger and the central element.
Patent GB-134574-A (GB)
Title: Improvements in or relating to Induction Pipes for Radial or Rotary Internal-combustion Engines.
IPC: F02B57/08
Filed: 1918-08-08
Abstract: 134,574. Fedden, A. H. R., Butler, L. r. G., and Brazil, Straker, &. Co. Aug. 8, 1918. Cylinders, pipes for.-The cylinders of radial or revolving cylinder engines are divided into groups, and each group is supplied by a separate induction pipe, the grouping being such that the induction strokes of two cylinders of a group do not overlap. The induction pipes are annular and may be twisted into a spiral, or an annular chamber A may be divided into compartments by a spiral F. Three compartments C<4>, D<4>, E<4> are shown and are supplied from carburettors C<5>, D<5>, E<5> respectively, while branch pipes C<1>, D<1>, E<1>, C<2>, D<2>, E<2>, C<3>, D<3>, E<3> lead from them to the cylinders.
Patent GB-217399-A (GB)
Title: Plate and like racks
IPC: A47L19/04
Filed: 1924-02-06
Abstract: 217,399. Waldron, P. B. Feb. 6, 1924. Plate and like racks.-A collapsable plate and like rack comprises parallel strips a<1> having notches a<5> and a member b hinged at c to one end of the rack and retained in an inclined position by the strip a<2>. The lower edges of the plates are supported in the notches a<6> and the upper edge of the first plate is supported by the member b. As shown, the rack is supported by hooks e from a wall, the strips a<2> having extensions a<7>, hinged to a bracket g, and retained in a horizontal position by engagement with a strip g<2>. When not in use, the member b lies between the strips a<1> and the rack is swung upward to lie in the bracket g In a modification, the strips a<1> form a base which lies on a table, the extensions a' and bracket g are dispensed with a strengthening strip connects the middles of the strips a<1> and the strip a<2>, adjacent to the support b, is U-shaped. The notches a<6> may be dispensed with and rubber non-slip surfaces provided.
Patent GB-1078484-A (GB)
Title: Collapsible container
IPC: B65D6/18
Filed: 1965-03-26
Abstract: 1,078,484. Collapsible boxes. W. ZARGES. March 26, 1965 [April 3, 1964], No. 12997/65. Heading B8P. A collapsible container has two pairs of side walls 2, 3 and 4, 5 pivoted to the bottom 1, one pair 4, 5 being collapsible before the other pair 2, 3. Helical springs 6 are mounted between the walls 4, 5 and the bottom to automatically erect these walls after the walls 2, 3 are erected. The walls 2, 3 collapse inwardly under their own weight after the walls 4, 5 have been collapsed. Projections 7 on the walls 2, 3 or on the inside of the rim 1<SP>1</SP> serve to displace the walls 2, 3 inwards. Springs similar to those on the walls 4, 5 may be provided to urge the walls 2, 3 inwards. The walls each have hookshaped lateral edges (8), (9), Fig. 2 (not shown), which interengage and prevent the walls falling outwards. It is also possible to provide other means to prevent the walls falling outwards, for example, triangular plates (10), Fig. 3 (not shown), hinged centrally (12) or pieces of triangular shaped cloth connecting the bottom and one of the walls 2, 3. The upper edges of the side walls are preferably rounded 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP>, 5<SP>1</SP> and the open ends closed with plastics plugs. The container may be closed by a lid pivoted to one of the side walls.
Patent GB-252878-A (GB)
Title: Improvements in winding machines for use in the production of yarns or threads
IPC: D02G3/36
Filed: 1925-05-19
Abstract: 252,878. Sutcliffe, R. L. May 19, 1925. Special yarns, producing; spindle apparatus. - In machines for forming yarns or threads wherein a central yarn, for example a yarn of hair or the like, is encircled by a binding - thread, the binding-thread 5a is wound around the central yarn 11 by means of a traveller mounted on a ring 9 on a driven tube 4 which carries the bobbin 5 or other package of binding- thread. The ring is formed on a sleeve 8 detachably mounted in the tube 4 which rotates on a tube 6 and is provided with an oil-well 7. The yarn is wound on a bobbin 14 by a guide 13. The Provisional Specification describes an arrangement wherein the yarn is passed between drawing-rollers.
Patent GB-924955-A (GB)
Title: A process for the manufacture of a derivative of vitamin b containing sulphur
Filed: 1961-04-11
Abstract: The invention comprises a sulphur containing derivative of Vitamin B6, believed to have the constitution bis - (4 - hydroxymethyl - 5 - hydroxy - 6 - methylpyridinyl-(3)-methyl)-sulphide, and the preparation thereof by reacting an acid addition salt of 3,4-bis-bromomethyl-5-hydroxy-6-methylpyridine in an aqueous solution with a water soluble inorganic sulphide or hydrogen sulphide.  The compound of the invention is characterized by its dihydrochloride and O-tetraacetyl-derivative.  The aqueous solution of the 3,4-bis-bromomethyl-5-hydroxy-6-methylpyridine salt is preferably heated several hours before reaction with the sulphide.