baber/WOPTO huggingface dataset:
Patent GB-285557-A (GB)
Title: Improvements in or relating to transportable catering wagons or the like
IPC: A47B31/00
Filed: 1926-11-16
Abstract: 285,557. Lyons & Co., Ltd., J., and Taylor, W. Nov. 16, 1926. Expanding tables.-A movable dinner wagon for use in restaurants consists of a main frame 2 on wheels 11, a rigidly-mounted central top member 3, and two extension members or leaves 5, 6 mounted on parallel links 7, 8 so that they may be moved from their lower position, in which they form, as shown in dotted lines, extensions of the central member 3, to positions 5a, 6a above it. A stop-plate 10 is fitted between the links 7, 8.
Patent GB-209857-A (GB)
Title: Improvements in or relating to grinding, crushing, mixing and like mills
IPC: B01F29/87
Filed: 1922-10-24
Abstract: 209,857. Seaman, C. J., and Brinjes & Goodwin, Ltd. Oct. 24, 1922. Roller apparatus.-In a mixing or like mill, the material is treated between two truncated contacting members which are of the same conicity and each of which is positively driven, the members having their major and minor diameters in contact so that the material is automatically advanced from the smaller to the larger ends of the members. The mill may comprise two truncated conical members 1, 2, Fig. 1, one inside the other, the mixing &c. being effected between the peripheral co-operating surfaces 3, 4 of the members so that during working the material moves up or along the peripheral surface of the inner member 2 and is removed at the upper end thereof by a scraper 5 which directs it into a tube 6 leading to a collector 7. The outer conical member 1 is made in the form of a receptacle, and the inner member 2 mav be solid or hollow. The member 2 is mounted on shaft 14 driven through bevel-gearing 12, 13 from the driving- shaft 8, and the member 1 is rotated in the same or in the opposite direction to the member 2. As shown, the member 1 is driven through bevelgearing 15, 16 from a shaft 17 driven by belt gearing from the shaft 8. Either or both of the members 1, 2 may be water-cooled. The pressure between the members 1, 2 'may be regulated by vertically adjusting the member 2 by means of a hand-wheel 20; or the receptacle 1 may be laterally adjustable. Fig. 2 shows two conical rollers 21, 22, mounted in frames 23, 24, the roller 22 being adjustable by means of hand-wheels 25, 26 and driven through gear wheels 30, 31 from the spindle of the roller 21.
Patent GB-534499-A (GB)
Title: Improvements in quick acting electric switches and fuse switches
IPC: H01H21/36
Filed: 1939-10-31
Abstract: 534,499. Snap-action switches. ROSS, F. A., and CRAWFORD, J. Oct. 31, 1939, No. 29026. [Class 38 (v)] In a quick-acting electric switch the operating handle k, Fig. 1, is attached to a bell-crank lever h, one arm of which is formed with a cam slot in which engages a pin m attached to the frame carrying the moving contact members b, b<1>, there being a spring o arranged between the other arm of the lever and the frame to produce a quick make or break action, or both. The cam acting on the pin produces a positive initial movement of the switch, which is completed with a snap action under control of the spring. In the form shown in Fig. 1, the movable contacts b, b' bridge a pair of fixed contacts a, a', and are rigidly mounted on the frame d, which is pivoted at t. They are connected by a fuse g or a metal link. The helical snap-over spring o is carried by a rod n pivoted to the bell-crank lever and slidably carried in a bracket p pivoted to the frame d, against which bracket one end of the spring abuts. Fig. 4 shows the positions of the parts when the switch is open, this Figure illustrating a modification in which the contacts b are secured to a T-bracket s which is pivoted at y to the frame d and to which a link v is connected, so that the contacts b have a substantially " parallel-motion " movement. The cam opening in the bell-crank lever is shaped so as to limit the movement of the switch in both directions and is provided with a recess q into which the pin m enters to lock the switch against closure by pressure on the frame d when inserting a fuse.
Patent GB-1416100-A (GB)
Title: Electric railway system
IPC: B60L5/38
Filed: 1973-06-19
Abstract: 1416100 Current collection KRAUS-MAFFEI AG 19 June 1973 [20 July 1972] 29027/73 Heading B7L In an electric railway system, a current collector 9 on a vehicle 2 comprises a contact carrier 10 in which contact pieces 11, 12, 13 spring-mounted for sliding on respective contact rails 5, 4, 3 on one side of the carrier, the carrier being mounted on levers 15, 16 for rotation relative thereto about an axis 14 parallel to the rails 3, 4, 5, axis 14 preferably being the centroidal axis of the carrier 10, and the levers 15, 16 being hinged on the vehicle at 17, 18 for rotation about an axis 19 also parallel to the rails, so that the carrier can move towards the rails under the urging of compression (as shown) or tension springs 20, 21 which are pivotally attached to the levers 15, 16 at 25, 26 and to the vehicle 2 at 22, 23. The apparatus of Fig. 1 is shown diagrammatically in Fig. 2, in which the springs 20, 21 are represented by S and hinged to the vehicle and levers respectively at B and D, and the levers 15, 16 are represented by H and hinged to the vehicle and carrier respectively at A and C. The extended line DB cuts a circle through the fulcrums A and B, the centre M of the circle being on the line AB, at a point E which is outside the triangle ABD for compression springs S as shown but would be inside the triangle ABD for tension springs, the point E never coinciding with B. The collector is intended to afford a substantially constant contact pressure of the pieces 11, 12, 13 against the parallel vertical faces of the rails 5, 4, 3, even at high vehicle speeds, the vehicle 2 particularly being a suspended vehicle.
Patent GB-1263068-A (GB)
Title: Improvements in weighing apparatus
Inventor: FORMAN ARTHUR WALTER
IPC: G01G21/00
Filed: 1968-06-19
Abstract: 1,263,068. Transistor switching circuits. DRIVER SOUTHALL Ltd. 6 June, 1969 [19 June, 1968], No. 29086/68. Addition to 1,124,671. Heading H3T. [Also in Division G1] In weighing apparatus (see Division G1) in which a weigh-pan is fed with material until a predetermined weight is reached and then a door of the weight pan is opened by electromagnetic means to allow discharge of the weighed material, a transistor circuit under the control of a photo-electric cell 40 is provided whereby when the predetermined weight in the weigh pan is reached a solenoid 41 is actuated to cut-off further feed and simultaneously electromagnetic coils 22, 23 are energized to open the door for a predetermined time. As shown, with the photo-electric cell 40 receiving light energy the solenoid 41 is energized through a thyristor 42 to allow feed and a capacitor 43 is simultaneously charged through a resistor 44. When the feed is complete, the photo-electric cell 40 is obscured from the light energy so that transistor 45 is turned on whereby thyristor 42 is turned off to de-energize solenoid 41 and thereby cutoff feed. Simultaneously, transistor 46 is also turned off and a signal is fed to transistors 47 and 48 via Zener diodes 49, 50 so disconnecting capacitor 43 from resistor 44. The capacitor 43 then discharges through a transistor 48 to a thyristor 51 which energizes the electromagnets 22, 23 for the period of discharge of the capacitor 43.
Patent GB-1217817-A (GB)
Title: Drawing off valve
Inventor: LEENAARDS ANTOINE
IPC: B67C3/26
Filed: 1969-06-10
Abstract: 1,217,817. Bottling &c. A. LEENAARDS. 10 June, 1969 [26 June, 1968], No. 29232/69. Heading B8T. A filling valve comprises a body 3 mounted on the bottom of a filling tank 2, a filling nozzle 4 whose lower end is provided with a transverse part 6 constituting a thin metal blade folded in the form of a closed curve, such that during removal of a filled container 1 from the nozzle 4, liquid is retained in the nozzle 4 due to the action of the surface tension of the liquid between the blade portions 7 of the transverse part 6 themselves, and between the portions 7 and the inner wall of the nozzle 4.
Patent GB-173903-A (GB)
Title: Improvements in cases or cabinets for cutlery and other articles and utensils
IPC: A47G21/14
Filed: 1920-10-16
Abstract: 173,903. Willis, A., and Sharman, H., (trading as Willis & Co., A.), and Willis, A. Oct. 16, 1920. Fittings, internal.-A case for holding cutlery, such as a knife, fork, and steel, has a central block b with a sloping surface to receive the knife, which is held in place by a spring clip d. The fork and steel are held in spring clips f let into ends of the block as shown, the clips being shaped to hold parallel or taper articles. In place of the clips f the recesses in the blocks may have rubber edgings.
Patent GB-402229-A (GB)
Title: Process for the simultaneous production of sulphuric and nitric acids
IPC: C01B17/82
Filed: 1932-10-19
Abstract: Sulphuric and nitric acids are simultaneously produced by passing sulphurous and nitrous gases, of low water content and pre-cooled to temperatures not exceeding about 100 DEG  C., together through an absorption system in cocurrent with a liquor containing sulphuric and nitrosyl sulphuric acids, the temperature being maintained low to avoid decomposition of the latter and to cause progressive absorption of both gases.  The concentrated liquor so obtained is denitrated by heat and water vapour, concentrated nitric acid being obtained from the gaseous product and concentrated sulphuric acid from the residual liquor.  The sulphurous gases may be obtained, for example, by roasting pyrites, zinc blende, or copper ores, and the nitrous gases by catalytic oxidation of ammonia, or oxidation of nitrogen in an electric arc.  The relative quantities may be varied, for example in the ratio of one or more molecules of SO2 to one molecule of NO.  Hot gases from pyrites furnaces are used in a Glover type tower to effect final denitration and concentration of the sulphuric acid, whereby they are cooled to about 80 DEG  C., and mixed with ammonia oxidation gases cooled to about 35 DEG  C. to remove most of the water.  The absorption system comprises three towers irrigated with sulphuric and nitrosyl sulphuric acids, that in the first tower being relatively dilute and periodically transferred to the second, and thence to the third.  The liquid is cooled to maintain a temperature of about 40 DEG  C.  The acid from the last tower is decomposed in a denitration column at about 130--140 DEG  C. by water or dilute nitric acid, and water vapour, air being introduced at the base.  95--100 per cent nitric acid is condensed at the exit, the remaining vapours, about 40 per cent NO2, being absorbed to give 70 per cent acid which may be returned to the column.  Part of the sulphuric acid withdrawn from the column is fed to the absorption system and part denitrated and concentrated in a Glover tower.
Patent GB-817540-A (GB)
Title: Improvements in the removal of trace metals from hard or saline waters or from aqueous solutions of electrolytes
Inventor: SMITH ROBERT LEWIS
IPC: B01J45/00
Filed: 1954-10-12
Abstract: In a process for the selective inactivation of one or more trace metals from an aqueous solution, ions having a higher stability constant are inactivated in preference to those having a lower stability constant by bringing the aqueous solution into close proximity with one or more insoluble chelating resins.  Such resins may be manufactured by the methods descrived in Specification 767,821 (Group IV(a)].  Copper ions are inactivated in preference to calcium, magnesium, sodium and potassium ions in water containing them.  Where iron instead of copper is present with the above four ions and the latter are unobjectionable, the iron may be thus selectively inactivated.  Lead may be selectively inactivated in water intended for the preparation of food or beverages and containing hardness and normal saline constituents necessary to give desired taste. Manganese, nickel and chromium which, like copper and iron, may be troublesome as regards catalytic activity, or have a detrimental effect on a plant or machinery, may be similarly inactivated.  Water containing only such higher-stability-constant ions may be freed from them by the process of the invention.
Patent GB-1013196-A (GB)
Title: Brake
IPC: F16D65/18
Filed: 1963-07-24
Abstract: 1,013,196. Discbrakes; fluid-pressure control of brakes. BENDIX CORPORATION. July 24, 1963 [July 27, 1962], No. 29350/63. Headings F2E and F2F. In a disc brake having a pair of pads engageable with opposite faces of an axially fixed disc, at least one pad is urged towards the disc by a first piston operating in a first chamber formed in a fixed or floating housing, and a second operating piston operating in a second chamber formed in the same housing is engaged by the pad so as to be moved in a circumferential direction by the braking torque acting on the pad when the brake is applied, the two chambers being interconnected by a passage whereby a servo effect is obtained which at least compensates for expansion of the brake hose &c. to reduce sponginess, but which may also be caused to operate independently on a further brake piston, e.g. for applying the other pad to the opposite disc face. In one embodiment, Fig. 2, a fixed caliper housing is used providing first and second chambers 36, 40 containing pistons 34, 38 at one side of the disc 18 and a single chamber 32 containing a piston 30 at the other side of the disc. Pads 42, 44 are located respectively between pistons 30, 34 and the disc faces. A spring 68 normally maintains the second piston 38 in a lowered position wherein a projection 48 on pad 44 is engaged in a groove 52 in this piston, also a valve element 62 secured to the piston 38 is then clear of a seat 64 arranged in a passage 58 interconnecting the chambers 36 and 40. Chamber 40 is connected with chamber 32 by a pipe 60. In operation, when hydraulic pressure is fed from a master cylinder to an inlet 54 it acts in chamber 36 and, via the open valve 62, 64 and pipe 60, also in the chamber 32 to cause pistons 30, 34 to engage the pads 42, 44 with the opposed disc faces, whereupon the torque reaction acting on the pad 44 moves the piston 38 so as to close the valve 62, 64 when a predetermined pressure is reached, after which the pressure in chamber 40 acts only on the piston 30 (via pipe 60 and chamber 32) and that in chamber 36 acts only on piston 34, whereby the pad 42 is servooperated. Prior to the closure of valve 62, 64 the movement of the piston 38 effects compensation for hose expansion, piston sealing loss and caliper deflection. In a second embodiment, Figs. 3 and 4, the arrangement is limited to these functions since the housing 10 is of the floating type, supported by a link pivoted at 76 and 78 to the housing and axle respectively, so that only one piston 34<SP>1</SP> is used to apply the pads 42<SP>1</SP>, 44<SP>1</SP>, the latter directly and the former by reaction acting through the housing. The valve is therefore omitted and excessive reaction on the driver's pedal avoided by limiting the circumferential movement of the pad 44<SP>1</SP> by abutment of a face 49 of the projection 48 with an end face 82 of the housing. The valve may, however, be provided (Fig. 6, not shown) when it is desired to operate another brake by the pressure developed by the piston 38<SP>1</SP>, in which case the arrangement is similar to that of Fig. 2.
Patent GB-481156-A (GB)
Title: Improvements in screw conveyors for stokers
IPC: F23K3/14
Filed: 1937-10-27
Abstract: 481,156. Screw-conveyers. THORNTON, A. A. (Brooks, H.-M., Gardiner, W. T., and Nissley, J. H.) Oct. 27, 1937, No. 29360. [Class 78 (i)] In a stoker having a screw-conveyer 15 for transferring the coal from the storage bin to the burner screw, at least a part of the screw within the bin, e.g. the portion 25, of the screw 15 beyond the end of the conduit 14 is flexible at a plurality of places along its length so that its inner end 26 can rise without exerting such stresses as may cause the fracture of the screw. This flexibility is attained by making the portion 25 without a centre shaft. A short section 27 between the portion 25 and the conduit is mounted on a shaft 28 which is inserted into the tubular shaft of the screw 15 and secured thereto by rivets 29. The shaft 28 is secured by welding to the helix of the section 27 only through the length 31. The parts are so designed that the part 32 can take in all the coal moved up to it, plus a slight amount more. Specification 471,336 is referred to.
Patent GB-387051-A (GB)
Title: Improvements in fire-extinguishing apparatus
IPC: A62C13/70
Filed: 1931-10-24
Abstract: 387,051. Fire-extinguishers. SMITH, E., Vulcan Works, Randall Well Street, Bradford, Yorkshire. Oct. 24, 1931, No. 29525. [Class 47 (ii).] An extinguisher wherein gas from a compressed-gas container u is discharged by a nozzle x<3>, comprises a casing a closed by end plates b, c. By removing the bottom plate c, an exhausted container u can be replaced by a full one. The container is closed by a frangible seal w, and is screwed into a sleeve n. The latter is held in a flanged opening in the plate b by a screwed cap d, an indiarubber or like disc f and a soft metal disc g being interposed between the two. A spring-raised plunger h<1> with a head h and point h<2> is slidable in a bore in the cap d. When the plunger is struck, the point h<2> first pierces the discs f, g and then forces down a spring-raised piercer p to break the seal w of the container u. The gas therefrom then escapes, passing to the nozzle x<3> by way of apertures u<4> in the sleeve n, a tube y, passage n4, passageway p<6> in the striker p, and bore in cap d.
Patent GB-1179076-A (GB)
Title: Electrically-Driven Dry Shaver with Two Shearing Heads for Cutting Short Hairs
IPC: B26B19/10
Filed: 1968-06-21
Abstract: 1,179,076. Dry shavers. BRAUN A.G. 21 June, 1968-[24 June, 1967], No. 29599/68. Heading B4B. An electrically-driven dry shaver comprises two shearing heads 1, 10 for cutting short hairs and clipper heads 4, 40 for cutting long hairs, the heads 1, 10 having connected thereto rocking arms 7, 70 carried by an axis 6, 60, the arms 7, 70 having journals 71, 710 which engage in recesses 41, 410 in the movable cutters of the heads 4, 40 so that the movable cutters can be moved to an extended position in which they cut an outline. The heads 4, 40 can be connected together by a rivet 50. The heads 1, 10 either have foils 2, 20 or a single foil 21.
Patent GB-140993-A (GB)
Title: An improved stauffer lubricator
IPC: F16N11/02
Filed: 1919-11-28
Abstract: 140,993. Piquerez, E. Nov. 28, 1919. Force-feed lubricators.-The two parts of a Stauffer lubricator are stamped from thin sheet metal with the necessary screw - threads which acts as reinforcing-ribs. The outer sides of the ribs on the cap a are knurled.
Patent GB-393171-A (GB)
Title: Improvements relating to machines for forming laps from slivers of fibrous materials
IPC: D01G27/04
Filed: 1932-10-25
Abstract: 393,171. Lap-forming apparatus. WEINBRENNER, J., 14, Rue du CimetiÞre, Thann, Haut-Rhin, France. Oct. 25, 1932, No. 29855. Convention date, Nov. 4, 1931. [Class 120 (i).] A machine for forming laps from slivers of fibrous material comprises a number of sets of drawing-rollers 7, 8, Fig. 2, each adapted to draw separately a number of slivers and each having a curved twisted plate 9, 10 associated therewith and so positioned that all the slivers from the several sets of drawing- rollers are assembled into a single lap, lap rollers 14, Fig. 6, for winding the lap and control mechanism operating automatically to stop the machine when a roll is completed, to expel the completed roll, to feed an empty tube into position for the formation of the next roll, and to restart the machine. The lap rollers 14 are driven through a gear wheel 30, Fig. 7, whihc is coupled to a clutch member 28 keyed on the roller shaft. When the lap roll is completed projections 15<1>, 16<1> on the toothed wheels 15, 16 engage and rock the lever 17 so as to release the clutch lever 18, whereupon the lever 23 is turned to rotate a cam 26 and thereby to free the gear wheel 30 and to engage the clutch members 27, 28 with the co-operating parts 29<1>, 29<11> of a chain wheel 29 which is normally idle but is now driven from a member connected to the loose pulley of the machine. The lap is held by the now stationary guide rollers 11 and is severed by the lap rollers 14 which are driven through the members 29<11>, 28. Rotation of the chain wheel 32 serves to raise the racks 34 together with the completed roll 35 and its side flanges 36. A member 38 engages and unlocks the flange locking screw 37 whereupon the completed roll is ejected into a trough 41 by the spring-pressed lever 39, rotation of this lever also moving a guard 43 and permitting the tube 44 to run down into winding position between the rollers 14, the arm 43<1> retaining the remaining tubes in the magazine 45. After the roll 35 is ejected the racks 34 lift the lever 18 through a chain 46 and reset the clutch members as shown in Fig. 7, the racks 34 then descending for the winding of a new lap roll. During the descent of the racks 34 the pressure roller 47 resets the members 43, 43<1> while the locking screw 37 engages an inclined plane 48 and locks the flanges 36 on the new lap tube.
Patent GB-430136-A (GB)
Title: Improvements in and relating to the preparation of condensation products
IPC: C08F8/28
Filed: 1934-10-19
Abstract: Condensation products are manufactured by causing a polyvinyl ester to react with two aldehydes in an aqueous solution of hydrochloric acid, all the primary materials being added at the commencement of the reaction and the operation being carried out from start to finish at ordinary temperature without isolating any intermediate product. The reaction may be accelerated by the addition of a small quantity of ethyl alcohol to the hydrochloric acid solution.  The products may be employed for the manufacture of photographic and cinematographic films, for rendering fabrics impermeable to very diffusible gases, particularly for balloon envelopes, and for the manufacture of plastic masses in blocks, sheets, tubes and artificial fibres.  In examples: (1) polyvinyl acetate is agitated with formaldehyde, paracetaldehyde, hydrochloric acid and denatured alcohol, the mixture then being allowed to stand at ordinary temperature and the product precipitated with water, washed and dried; flexible sheets may be formed from the product with the addition of plasticizers such as benzyl alcohol or p-toluenesulphonamide; (2) as in (1) but using more formaldehyde and less paracetaldehyde; films may be prepared from a solution of the product in methanol and benzene; (3) to (5) a less highly polymerized vinyl acetate is employed, with various proportions of formaldehyde and paracetaldehyde; a film, formed from a solution of the product of (5) in methyl or ethyl acetate or a mixture of ethanol or methanol and benzene, if desired with the addition of plasticizers, is placed between two sheets of fabric, e.g. flax, cotton or silk and united thereto to produce a fabric impermeable to diffusible gases and suitable for the manufacture of balloon envelopes; the impermeability may be obtained by direct coating of fabrics, e.g. single fabrics or multiple fabrics in which the warps may be crossed at 45 DEG , by means of a suitably plasticized solution of the product; (6) as in (1) but using different proportions of the two aldehydes; a support for a photographic or kinematographic film may be prepared from a suitably plasticized solution of the product in methyl acetate and ethanol. Specification 409,507 is referred to.