baber/WOPTO huggingface dataset:
Patent GB-549647-A (GB)
Title: Improvements in coating metal supports with photographic emulsions
IPC: B41N3/03
Filed: 1941-05-27
Abstract: 549,647. Photo-lithographic printing plates. KODAK, Ltd., COPPIN, F. W., and GRESHAM, D. C. May 27, 1941, "No.-6807. [Class 98 (ii)] A plate for use in photolithography comprises a metal, e.g. zinc or aluminium support that has a grained surface and carries a sensitive silver halide : emulsion prepared with a colloid such as gelatine capable of being hardened, :a salt of the metal of :the support-that is both water-insoluble and inert to the emulsion being interposed between the grained surface and the emulsion in a layer that, while serving to prevent any adverse -action of the metal on the emulsion, is so thin that it does not interfere with the hydraulic properties of the grain of the metal when the plate is used for printing after the removal of the whole of the colloid. The compound, with a zinc support, may be zinc chromate, phosphate, or tungstate. The colloid layer may be hardened imagewise during or after the development and then selectively removed so that the areas beneath of the unhardened and hardened areas can 'be rendered respectively ink-repellant an ink-receptive or vice vera. Solutions containing rchromate, phosphate, or tungstate anions together with a metal solvent such as hydrochloric, acetic, or-hydrobromic acid may be used or an alkaline solvent such as sodium hydroxide may be employed. Examples are (1) potassium dichromate and hydrochloric acid, '(2) potassium chromate and hydrochloric acid, (3) potassium chromate, citric acid, caustic soda, and hydrochloric acid, (4) potassium chromate and caustic soda, (5) rammonium nitrate, ammonium dihydrogen phosphate, and acetic acid, (6) aqueous sodium tungstate, andr (7) sodium dichromate, sodium dihydrogen phosphate, ammonium chloride, and (optionally) acetic acid. Solution No. 5 should preferably be used above 40‹ C, and solution No. 4 at about 40‹C. Solution No. 7 should be used for 10 minutes, and the remainder for 5 ,minutes. The metal support should be cleaned with acid before treatment. After exposure, the plate is developed with a tanning developer, the unhardened gelatine washed off, and the plate washed in alcohol and fanned dry. The exposed areas are coated with a bitumen wash-out solution, the protective layer being, if desired, first removed in these areas. The hardened gelatine is removed with sodium hypochlorite solution and the exposed areas are damped and repel ink. Specification 547,795 is referred to.
Patent GB-1379666-A (GB)
Title: Lock devices
IPC: E05B47/06
Filed: 1972-02-14
Abstract: 1379666 Lock devices FICHET-BAUCHE 14 Feb 1972 [28 April 1971] 6819/72 Heading E2A  A lock device for the door of a compartment of a strong room comprises a key operated bolt 17, a member 52 which in a first position blocks the opening movement of the bolt 17 and in a second position allows opening movement of the bolt, a set, e.g. two, of switches at least one of which is arranged in the supply circuit of an electromagnet 58, the electromagnet 58 being for moving the member 52 from its first to its second position and an actuator adapted to co-operate with the fillister of the compartment and controlling at least the switch in the supply circuit. The condition of the switches in use of the device represent the open or closed position of the door of the compartment. In the construction shown the actuator comprises a rod 32 a plastics material tip 36 of which, in use, engages the fillister, the rod 32 being provided with switch operating members 41, 45 which co-operate with studs 74, 75 of the switches. After the member 52 has been moved from its first position the switch operating members 41, 45 serve to hold the member 52 in its second position. This is necessary as the two switches are in series with the coil of the electromagnet and retraction of the bolt 17 also allows movement of the switch operating member 41 (spring biassed into engagement with the bolt) to open one of the switches. If the bolt 17 is urged to its locking condition by use of the key when the lock device is in use and the door of the compartment is not closed properly, the tip 36 of the actuator is urged to project out of the door causing both switches to be actuated (Fig. 7, not shown). In the event of the failure of the electromagnet a tumbler lock 80 is provided by means of an appendage 88 of the bolt 82 of which the member 52 may be moved from its first to its second position. In a modification one of the switches is actuated by the electromagnet (Figs. 9, 10, not shown).
Patent GB-739660-A (GB)
Title: Flux for magnesium alloys containing zirconium
IPC: C22B9/10
Filed: 1954-03-10
Abstract: A flux for use in the production of magnesium alloys containing zirconium, together with zinc and cerium if desired, consists of a prefused mixture of BaCl2 and CaCl2 within the proportions of 45-55 per cent of each, said mixture having a melting-point not exceeding 630 DEG  C. and being free from other chlorides.  To this mixture is added 15-35 per cent by weight of the thickener MgF2.
Patent GB-570138-A (GB)
Title: Improved process for moulding articles of and filling cavities with rubber-like materials
IPC: C08L11/00
Filed: 1941-06-03
Abstract: Compositions which are sufficiently fluid or plastic to be cast or moulded at ordinary pressures, and can be vulcanized to form elastic products are formed by polymerizing in presence of sulphur butadiene, chloroprene, bromoprene and their methyl homologues such as isoprene or methyl chloroprene or mixtures such as chloroprene with cyanoprene, or acrylic nitrile, or butadiene with styrene, methyl methacrylate or methacrylic nitrile.  The polymers are plasticized to obtain very plastic or fluid products with compounds of the formula R-S-R1, where R is alkyl, aryl, thiazyl, thiocarbamyl, xanthogenyl, thioxanthogenyl, or aromatic acyl or thioacyl, and R1 is hydrogen, ammonium, substituted ammonium, alkali or alkaline earth metal or a group -SnR2, where n is less than 4 and R2 one of the groups R. Amines having dissociation constants greater than 10-6, e.g. diorthotolylguanidine and a non-volatile flux such as mineral or fatty oil or low-melting point natural or synthetic wax, resin, asphalt or pitch, may be added.  A curing accelerator, which in the case of chloroprene polymers may be zinc or magnesium oxide and in the case of butadiene polymers may be any of the accelerators used with natural rubber is added. Ammonium carbonate or compounds which react to form it may be added to render the product porous or spongy. Specification 529,838 is referred to.
Patent GB-1300645-A (GB)
Title: Improvements in and relating to the production of magnetic recording tapes
IPC: B32B27/00
Filed: 1970-02-13
Abstract: 1300645 Coating webs AGFA-GEVAERT AG 13 Feb 1970 [13 Feb 1969] 7062/70 Heading D1L In the production of magnetic recording tape by coating a support web with a suspension of magnetic recording material the material is extruded from a non-ferromagnetic extrusion head 4 onto the support web 6, this web passing over a pole of a rectilinear magnet 3 on the opposite side of the web from the extrusion head, the head being opposite the edge 3a of the magnet at which the web leaves the magnet. The magnetic field at this edge exceeds 700 oersted, the field gradient between the edge and the outlet of the extrusion head exceeding 500 oersted/cm. This magnetic field acts to pull the coating in the opposite direction to that of web movement and the coating formed may be 30 times thinner than width (e.g. 0.5 mm) of the slit 5, with a rate of web advancement of at least 100 m/min. The magnet may be a permanent magnet of, e.g., barium ferrite, or an electromagnet.
Patent GB-126115-A (GB)
Title: Improvements in Whistles.
Inventor: LUND CHARLES WALTER
IPC: G10K5/00
Filed: 1918-04-26
Abstract: 126,115. Lund, C. W. April 26, 1918. Whistles.-In a whistle for automobiles, boats, &c., the size of the fluid chamber of the whistle is varied simultaneously with the movement of the piston of the pump supplying the operating fluid. In the construction shown, the whistle tube 3 is mounted directly on the pump 1 and provided with a piston 9 connected to the piston 6 of the pump operated by the hand-lever 10 or other means. The compressed fluid passes from both sides of the piston through a pipe 17 to the whistle mouth 4.
Patent GB-1042932-A (GB)
Title: Improvements relating to aerial spraying of soil or crops thereon
Inventor: RIPPER WALTER EUGENE
IPC: B64D1/16
Filed: 1963-02-21
Abstract: 1,042,932. Aerial spraying. RIPPER ROBOTS Ltd. Feb. 18, 1964 [Feb. 21, 1963], No. 7091/63. Heading AID. [Also in Division B2] An aircraft has a spray-bar S suspended on two linear actuators J. J<SP>1</SP> e.g. hydraulic, pneumatic or electrically operated jacks automatically controlled by a summing and amplifying unit 18 to keep the spray-bar substantially parallel to and at a substantially constant height above the ground which is being sprayed. Demand signals indicating the required heights of the aircraft and spray bar are fed into the unit 18, as also are signals from height-aboveground measuring devices 15, 15<SP>1</SP> and 17. The signals are algebraically summed and actuator extension error signals are fed to servo-valves V, V<SP>1</SP> respectively to effect extension or retraction of the actuators until the error signals are both zero. The aircraft may also include means which relays height error to a system which controls the aircraft's vertical movements. When traversing rough ground or ground carrying a standing crop filters may be included in the summing and amplifying networks to eliminate unwanted high frequency components.
Patent GB-226143-A (GB)
Title: Improvements in the manufacture of fuel alcohol and in apparatus therefor
IPC: C10L1/02
Filed: 1924-03-20
Abstract: Liquid fuel consists of 93-100 lb. of dehydrated alcohol which may contain up to 3 per cent of water, together with 0-7 lb. of acetone and 0-7 lb. of ether.  Combustible gases, such as acetylene, butylene, methane, ethylene, ethane, propane, butane, propylene, amylene, cyanogen, and ammonia, may be dissolved in the fuel to any extent up to complete saturation.  The ingredients may be incorporated at any stage of the manufacture, and the distilling or purifying operations may be performed in the presence of bases or salts, such as lime, soda, or lead salts, which absorb acids and sulphur compounds.  Acetylene, when used, may be generated by using calcium carbide for dehydrating the alcohol.
Patent GB-214794-A (GB)
Title: Improvements in or relating to the bodies of motor road vehicles
IPC: B60K15/063
Filed: 1923-03-13
Abstract: 214,794. Smith, S., and A. C. Cars, Ltd. March 13, 1923. Ventilating vehicles. - A removable or detachable ventilator 1 is fitted on the scuttle dash above the filler cap 4 of a fuel or other tank 15. A channel-shaped shoot 18 is provided on one end of the tank and' a second ventilator is mounted on the dash above the open end of the shoot. The ventilator may have an adjustable opening and it may be hinged, or removable and held in place by spring pins. The filler cap is provided with a stem and handle which extend into the lower part of the ventilator.
Patent GB-583946-A (GB)
Title: Improvements in or relating to electric ignition devices for use in vapour electric arc converters
IPC: H01J13/48
Filed: 1941-06-06
Abstract: 583,946. Metal - vapour converters. GENERAL ELECTRIC CO., Ltd., and GALLIZIA, E. June 6, 1941, No. 7184. [Class 39 (i)] In an ignition device for a vapour arc converter of the type in which an arc is struck between a fixed electrode 10, Fig. 1, and a movable electrode 9 carried by a magnetic plunger 4 floating in the cathode pool 1, the plunger comprises a steel part 7 and a second part 6 of conducting and arc-resisting material such as carbon or graphite having a lower specific gravity than that of the first part, the second part forming at least the upper portion of the plunger and containing a depression for the electrode 9. The plunger forms a composite solid body having substantially no interior space for the possible inclusion of air or gas. The steel part 7 may screw into the upper part 6, as shown, and may be made as a number of sections screwed together, one or more of which may be replaced by one or more similar sections of graphite. In a modification, Fig. 2 (not shown), the upper portion of the plunger is in the form of a hollow cylinder and a steel cylinder is housed in the bore thereof, the bottom of the bore being closed by a threaded graphite plug. Steel cylinders and graphite plugs may be made of different axial lengths so that different pairs may be employed. The graphite plug may be omitted, in which case the steel cylinder is screwed into the cylindrical bore in the upper portion of the plunger.
Patent GB-144407-A (GB)
Title: Improvements in or relating to devices for holding open the lids of pianos, gramophones, desks, boxes, or the like
IPC: G10C3/02
Filed: 1919-03-22
Abstract: 144,407. Craymer, W. J. March 22, 1919. No Patent granted (Sealing fee not paid). Stays.-A device for holding open the lids of pianofortes, desks, gramophones, boxes, &c., and applicable also to windows &c., consists of a rod member having a quick-pitch screwthread, a nut member engaged with and rotatable in relation to the rod member, and a spring member or members opposing relative rotation of the rod and nut members in the closing direction. In the example shown in Fig. 1, the rod member 1 is pivoted at one end in a lug 2 on an attachment plate 3, and the nut member 5 has two flanges 6,7 between which is engaged a collar, ring, or the like 8 mounted by trunnions 9 in lugs 10 on an attachment plate 11. A spiral spring 12 surrounds the nut member and is connected at its lower end to the nut member and at its upper end to one of the lugs 10. The spring 12 tends to rotate the nut member in the opening direction and to oppose rotation in the opposite direction. The nut member shown in Fig. 6 has only one flange 13 bearing on the collar 8, and the spring 14 is loose on the nut member and bears under the collar 8 at the upper end and against a milled nut 15 at the lower end, so that the friction between the parts 13, 8 opposes rotation in the closing direction, and can be varied by adjusting the nut 15. The nut member shown in Fig. 9 has a ball-and-socket mounting, and is provided with leather or other silent packing 18 engaging the rod member; the loose spring 14 opposes rotation in either direction. Instead of providing a spiral spring, flat springs or spring washers may be arranged to bear on serrated flanges of the nut member, opposing rotation in either direction.
Patent GB-410448-A (GB)
Title: Improvements relating to zinc cans for dry batteries
IPC: H01M6/08
Filed: 1934-03-07
Abstract: 410,448. Batteries. POLLOCK, J. C., 68, Fielden Place, Glasgow. March 7, 1934, No. 7228. [Class 53.] The zinc container 1 of a dry cell is provided with a bottom 2 consisting of an insulating disc having a protuberance 6 of smaller diameter than the disc. The metal part of the container is thus spaced from the bottom of the battery container 4. The disc 2 is formed with a recess to receive the lower end of the dolly 3 and is secured to the container 1 by a groove and rib 7.
Patent GB-555279-A (GB)
Title: Improvements in or relating to cutter arbors and mountings therefor for milling machines
IPC: B23B31/11
Filed: 1942-05-28
Abstract: 555,279. Mounting milling-cutter arbors &c. ATTWOOD, A. A., and JESSOP, J. May 28, 1942, No. 7230. [Class 83 (iii)] In mounting a milling or like tool or arbor by means of a holder 3 secured in a taper bore in a driving spindle, (not shown), the arbor or shank 1, tapered at 13 is screwed at 2 into a plug 6 screwed at 8 into the rear of the holder so that by removing the plug the shank 1 may readily be driven out. The plug has a reduced part 12 fitting into a plain bore of the holder and has a head 5 tapped to receive the end of a draw spindle which secures the member 3. The thread 8 may have the same pitch as the thread 2 or it may have a smaller pitch so that the action of unscrewing the plug serves to move the shank 1 axially and thus loosen it.
Patent GB-233830-A (GB)
Title: Improvements in and relating to bearings for spinning spindles
IPC: D01H7/04
Filed: 1924-03-21
Abstract: 233,830. Eisenlohr, F., and Uebelen, C. March 21, 1924. Spring supports; roller bearings; covers.-A spinning spindle bolster b carrying an upper bearing u and a footstep bearing k has a convex surface g engaging the bolster casing c and is held resiliently at its lower end by an annular spring i pressing against balls h which protrude through notches in the bolster band bear against the bolster casing c. The notches in the bolster b and a shoulder t on the footstep k prevent the balls h from falling out when the bolster b is removed from the casing c. The upper bearing u comprises convex ended rollers mounted in an annular cage v having a convex end surface bearing on a hard plate y. The cage v has a cover plate secured thereon by riveted-over projections on the roller spacing members of the cage. The bearings have dust and oil tight covers e held in place by split spring rings d.
Patent GB-512632-A (GB)
Title: Improvements in or relating to valves of the spring leaf type
IPC: F01L3/20
Filed: 1938-03-09
Abstract: 512,632. Valves. SULZER FRERES SOC. ANON. March 9, 1938, No. 7336. Convention date, April 6, 1937. [Class 135] A spring-leaf type of valve for passing scavenging or charging air to two-stroke internal combustion engines &c. comprises a number of spring leaves c fixed at one end and co-operating with seating surfaces f provided on supporting members e to control a passage a. The under surfaces of the supporting members e are curved to act as stops for the spring leaves and are provided with ribs h so that the area of contact is reduced to prevent the spring leaves sticking to these surfaces. The radius of curvature of the ribs h is reduced from the end adjacent the fixed ends of the spring leaves, to the end adjacent the free ends of the leaves, thus preventing wear owing to the shock of the spring leaves striking the stop surfaces. The free ends of the leaves are further of such length as to project beyond the ends of the seating surfaces f.
Patent GB-194145-A (GB)
Title: Improvements in and connected with box-spanners
IPC: B25B13/10
Filed: 1922-03-14
Abstract: 194,145. Frith, W. J. March 14, 1922. Wrenches.-In multiple box-spanners of the kind comprising various-sized spanners telescoping within a larger spanner, registering slots are formed in opposite faces of the spanners and bolts are passed diametrically through the slots and through corresponding holes in the respective spanners. Three spanners B, C, D of graded sizes telescope within a larger spanner A and bolts E provided with spring washers E<1> pass through holes such as B<1>, Fig. 2, in opposite faces of each of the spanners B, C, D and through slots such as A<2>, Fig. 1, or B<2>, Fig. 2, in the other three spanners. A solid piece H fixed in the end of the spanner A is provided with holes H<1> to receive a tommy bar consisting of a removable bolt J. Each end of the spanner A may contain a set of spanners, the tommy bar being situated centrally. In two modifications, the upper parts of the spanners are reduced in width to clear the heads of the bolts E.
Patent GB-867580-A (GB)
Title: Improvements in extensometer measuring means
IPC: G01B7/24
Filed: 1957-03-06
Abstract: 867,580. Strain gauges. A.E.I. - JOHN THOMPSON NUCLEAR ENERGY CO. Ltd., SHEPHERD, G. H., and STAIT, D. P. March 6, 1958 [March 6, 1957], No. 7425/57. Class 106 (2). [Also in Group XXXV] An extensometer comprises two relatively slidable members 1, 2, a head 5 secured to one member 2, and means (not shown) for generating a magneto-motive force in the head 5 which is provided with a laminated face over which a portion 6 of a third member 7 passes, thus completing successive magnetic flux paths for the M.M.F., the magnitude of the movement between the members 1, 2 being determined by counting the number of magnetic flux pulsations in the head 5. The M.M.F. is provided by a coil (not shown) which embraces the laminµ, alternate laminµ being non-magnetic, or alternatively each lamina may be provided with its own coil. To obtain a vernier indication, the portion 6 of the third member 7 may be provided with a plurality of fingers spaced apart rather more than the laminµ.
Patent GB-781291-A (GB)
Title: Improvements in or relating to relays
Inventor: SIMONS MALCOLM
IPC: G08B5/30
Filed: 1954-03-15
Abstract: 781,291. Electromagnetic relays. TELEPHONE MANUFACTURING CO., Ltd. March 1, 1955 [March 15, 1954], No. 7433/54. Class 38 (5). [Also in Group XXXVIII] An indicator for an electric relay has a frame 12 for attaching by screws 16 to the structure of a relay 15. An indicating member 19 is rotatably mounted between spaced side-plates 17 on the frame 12, and is rotated on actuation of the armature 22, by an actuating lever 23, which is screwed to the armature. The lever 23 carries at its end a pin which co-opera tes with a slot 25 in a plate 26 which is secured within a recess in the indicator 19, and is so arranged that a limited movement of the armature gives rise to a large angular movement of the indicator. The member 19 may be made of two identically shaped parts which are bolted together, Figs. 4 to 6 (not shown). The angular movement of the member 19 resulting from a given angular movement of the armature 22.may be adjusted by moving the frame 12 longitudinally with respect to the relay 15 and by suitably bending the lever 23.
Patent GB-819454-A (GB)
Title: Improvements in or relating to circuit arrangements for marking selector contacts intele-communications installations
IPC: H04Q3/42
Filed: 1957-03-06
Abstract: 819,454. Electric selective signalling systems. SIEMENS & HALSKE A.G. March 6, 1957 [March 6, 1956], No. 7515/57. Class 40 (1). [Also in Group XXXIX] A selector is controlled by a circuit in which code signals are stored, a first group of leads in a cross-connection panel corresponding to storage elements while a second group of leads is allocated to the selector contacts, the two groups of leads being connected together by rectifiers so that a potential applied to a number of leads in the first group by the storage elements is cancelled out by application of a counter potential through a wiper of the selector when the selector is set to the appropriate lead of the second group. Operation of one of keys Tl-TO, Fig. 5, sets up a digit in code form by energizing one or two of four storage relays A-D, Fig. 6. The operated storage relays close the related contacts 1a-7d, Fig. 1, to apply resistance battery to one or two of four leads 11-14 and also to the related rectifiers GI1-GI4. As the selector brush d steps round battery remains on one of these rectifiers until the selected terminal is reached when earth from brush d cancels out battery on the marked rectifiers and tube R fires. Relay P then energizes to stop the selector. Second embodiment. Operation of one of the keys of Fig. 5 passes current through one or two of the transformer primaries shown in Fig. 7 to induce current in the corresponding secondaries, Fig. 2, so firing the related one or two of tubes RA-RD. As in Fig. 1 the rectifier network GI1-GI4 is backed off until the selector brush reaches the selected lead when tube R fires. Third embodiment. Each storage relay A-D, Fig. 6, controls through its contacts, such as 1a, 2a, a pair of leads, such as I1, I2. Otherwise the operation is as in Fig. 1. Fourth embodiment. Leads 15-18 are permanently connected to resistance battery which is shunted out on one or two leads at operation of the related storage relays A-D, which connect resistance battery to the associated lead or leads 11-14 at the same time. At the appropriate position of the selector brush earth is applied to four of the rectifiers GI1- GI8 simultaneously and R fires. Modifications. Tube R may be replaced by a relay in series with resistor W5. Rectifiers GI1-GI4, Figs. 1-3, or GI1-GI8, Fig. 4, would then be replaced by low resistors. Relays RA-RD may form part of a register set up in any manner.