baber/WOPTO huggingface dataset:
Patent GB-153585-A (GB)
Title: An improved device for airtight-jointing metal vapour rectifiers and like vacuum vessels
IPC: H01J5/30
Filed: 1920-11-08
Abstract: 153,585. Gleichrichter - Akt. - Ges. Nov. 7, 1919, [Convention date]. Low-pressure metallic-vapour apparatus. - A liquid-seal joint for a vacuum vessel such as a metallic vapour rectifier has means for applying mechanical pressure to a solid yielding packing contained in a space, the outlet to which is constrained, and a sealing liquid other than mercury. As shown, asbestos or rubber packing, and a washer o contained in the space between a rod b and a flanged neck h on the casing, are compressed by a cylinder j having a flange e adjustable towards the neck by bolts d. The sealing liquid g may consist of water-glass, oil or tar products. Recesses u are provided to receive any sealing liquid passing into the vessel. According to the Specification as open to inspection under Sect. 91 (3) (a), metallic or leather packing may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-721079-A (GB)
Title: Improvements in photographic developing agents
IPC: G03C7/413
Filed: 1952-12-15
Abstract: 3 - Dimethylamino - 4 - amino - N : N - di - methylaniline sulphate is prepared by reducing N : N - dimethyl - 3 - dimethylamino - 4 - nitro - aniline with hydrogen under pressure in ethanol in the presence of Raney nickel, and adding an aqueous-ethanol solution of sulphuric acid.  3 - Diethylamino 4 - amino - N : N - dimethyl - aniline and 3 - diethylamino 4 - amino - N : N - diethylaniline sulphates are similarly prepared.  N : N - Dimethyl - 3 - dimethylamino - 4 - nitroanile is prepared by heating together N : N - dimethyl - 3 : 4 - dinitroaniline, di - methylamine, and ethanol in a sealed tube. N : N - Dimethyl - 3 - diethylamino - 4 - nitro - aniline is prepared by heating together in a sealed tube 5 - chloro - N : N - diethyl - 2 - nitroaniline, dimethylamine, and ethanol.  N : N - Diethyl - 3 - diethylamino - 4 - nitroaniline is similarly prepared.  N : N - Dimethyl - 3 : 4 - dinitroanile is prepared by nitrating with 20 per cent nitric acid 3-nitrodimethylaniline.  5 - Chloro - N : N - diethyl) - 2 - nitroanilin is prepared by refluxing together 2 : 4-dichloronitrobenzene, diethylamine, and aqueous sodium carbonate.  2 : 4 - Dichloronitrobenzene is prepared by adding m-dichlorobenzene to a cooled solution of fuming nitric acid and heating.
Patent GB-463491-A (GB)
Title: Improvements in spectacle frames
IPC: G02C5/22
Filed: 1935-11-16
Abstract: 463,491. Spectacle frames. WILLESDEN OPTICAL WORKS, Ltd. Nov. 16, 1935, No. 31815. [Class 97 (i)] In a spectacle frame made from thermoplastic material, one half of each hinge is attached to the lens frame solely by means of one or more anchoring projections integral with the hinge half and forced into the material of the lens frame through the back surface, but not extending to the front surface. As shown the projections are in the form of two short studs 4, with enlarged heads 5, projecting from the bearing plate 6 integral with the bored portion of the hinge 3. The other half 8 of the hinge is soldered to a wire 9 running within the temple 1. The anchoring projections are inserted into the lens frame by pushing in while hot.
Patent GB-661864-A (GB)
Title: Improvements in combustion systems
Inventor: LLOYD PETER
IPC: F23R3/54
Filed: 1947-12-02
Abstract: 661,864. Generating combustion products under pressure. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Nov. 18, 1948 [Dec. 2, 1947], No. 31826/47. Class 51 (i). A combustion system comprises a plurality of flame tubes 1 arranged symmetrically about a common axis and discharging into one end of a common tubular mixing chamber 3. The length of the mixing chamber is at least equal to that of the flame tubes. Air flows in an upstream direction through the annular passage 9 surrounding the mixing chamber 3 and then through the annular passages 11 surrounding the flame tubes, reversing in direction to enter the flame tubes. The air passing through the annular entries 14 maintains a layer of cool air between the hot gases and the flame tube walls. Further annular casings 12 are provided around the casings 10. Cooling air may be admitted to the mixing chamber 3 through the lateral openings 18. Specifications 636,623 and 636,624 are referred to.
Patent GB-155455-A (GB)
Title: An improved auxiliary valve for steam engines
IPC: F16K11/065
Filed: 1919-12-18
Abstract: 155,455. Ruff, C. Dec. 18, 1919. Starting-valves, auxiliary. - To lengthen the life of a valve 4 supplying high-pressure steam to a low-pressure cylinder, its seat is protected from deleterious substances by arranging a non- return valve 9 in the outlet passage. The casings of the valves 4, 9 are made in one, or preferably connected by a tube 11. The parts 2, 7 are made removable to facilitate access to the raised valve seats. The bottom of the chest 6 is provided with a plug 12. The valve spindle 5 is guided at both ends, and screwed to facilitate valve adjustment. When the parts 1, 6 constitute a single casing, the valve may engage the bottom of the cover, and the spindle have a single long guide.
Patent GB-773656-A (GB)
Title: Improvements in or relating to devices for launching rockets from aircraft
Inventor: NOLAN AULDIN DAUN
IPC: F41A23/20
Filed: 1955-11-08
Abstract: 773,656. Discharging rockets from aircraft. NORTHROP AIRCRAFT, Inc. Nov. 8, 1955, No. 31904/55. Class 9 (2). Rockets are housed in the fore-part of containers 2 fitted in the wings of an aeroplane 1, engine fuel being carried in the rear part. Each container 2 comprises coaxial cylinders 3, 5 joined together at the forward ends, the outer cylinder 5 having spaced arrow-shaped openings 8 to allow passage of the rockets 9, which are housed between the cylinders. Rockets may also be housed in the cylinder 3, radially directed tubes 4 being provided for exhausting the gases from these rockets. A heat-resisting wall protects the fuel tank from these gases. Each opening 8 has a cover 10 to which is fixed a plate 13 fixed to hinge pins 47, which are pivoted in lugs 12 extending from the inner surface of cylinder 5. A mount 15 for a rocket-launching beam 32 is pivotally supported by arms 16, links 18, 14 on plate 13 and is arranged to pivot about a rod 11 mounted in the lugs 12 and passing through the arms 16. The piston rod 24 of a hydraulic actuator 21 is pivoted on a rod 25 extending across a slot in the mount 15, the cylinder 22 of the actuator being pivoted on the inner wall of cylinder 5. The hydraulic circuit comprises a reservoir 30, valve 29 and pump 31 under the pilot's control. The beam 32 is secured to the forward end of the rocket by a shear pin and has a T-shaped groove receiving the head of a bolt extending from the rearward part of the rocket. Electrical connections to the firing device of the rocket are made through a plug and on firing the rocket the bolt moves along the groove until free of the beam 32, when a spring retracts the bolt within the rocket profile.
Patent GB-777920-A (GB)
Title: Improvements in or relating to aircraft rocket launchers
Inventor: WILSON GRANVILLE LEWIS
IPC: F41F3/06
Filed: 1955-11-08
Abstract: 777,920. Launching rockets from aircraft. NORTHROP AIRCRAFT, Inc. Nov. 8, 1955, No. 31906/55. Class 9 (2). Rockets 3 are held in launching tubes 4, which are housed in containers 2 at the wing tips of an aircraft 1, by detents extending through the tubes. Lateral openings 5 in the containers 2 are provided for the exhaust of the propellent gases as in Specification 773,656. Each rocket 3 has folding vanes 9 and when fully inserted in its tube contacts an igniter as in Specification 777,919. Stop means 10 within the tube limit rearward movement of the rocket. The detent 11 is an elongated resilient element, e.g. of spring steel, secured to the outer surface of the tube 4 and having a head 14 extending into a groove 6 in the rocket casing, the surfaces of the head being such that the detent holds the rocket in position until the rocket is fired, when the thrust of the gases overcomes the resistance of the detent.
Patent GB-520953-A (GB)
Title: Improvements in and relating to evaporators of diffusion absorption refrigerating machines
IPC: F25B39/02
Filed: 1938-11-04
Abstract: 520,953. Refrigerating. BOSSINI, G. Nov. 4, 1938, No. 31981. [Class 29] Absorption machines.-In a continuous-cycle inert gas machine the inert gas passes from the absorber i, which maybe a water-jacketed coil, by a pipe j to the evaporator and is directed by an outer casing o along the surface of a metal baffle g spaced a small distance from the wall a down which the liquefied refrigerant flows from a trough c. The inert gas is thus cooled strongly before it reaches the refrigerant. The gas mixture flows out at the bottom by a pipe k forming a concentric tube heat exchanger with the inert gas conduit. The outer casing o is formed with an inturned flange p connected' tightly with the inner surface of the wall a which may serve as a bowl for freezing or conserving ice-cream. In another arrangement cooling of a cabinet is effected from the outer surface of the wall a and the baffle g is located inside and between this wall and an inner hollow core member vented at the top to the condenser and at the bottom to the evaporation space to equalize pressures within and outside the core. Where a heavy inert gas such as argon is used the baffle depends downwards in the evaporator.
Patent GB-764688-A (GB)
Title: Means for mounting columns of presses
IPC: B30B15/04
Filed: 1953-11-18
Abstract: 764,688. Forging presses. BALDWINLIMA-HAMILTON CORPORATION. Nov. 18, 1953 [Nov. 25, 1952], No. 31982/53. Class 83 (4). [Also in Group XXIX] A forging press comprises a column 30, built of plates, connected at each side of the press to a crosshead 35, also built of plates, by a bearing assembly which has arcuate contacting surfaces. In one form, the bearing comprises a wedge member 60 adjustable on the crosshead by a screwed member 71 and nuts 75, 76, and a member 70 having an arcuate surface 66 engaging a similar surface on a projection 40 on the column. In a second form, the projection on the column has an inclined under surface which acts as the wedge member, and the arcuate surfaces are on members mounted on the crosshead. In both forms, the arcuate surfaces are arranged to have a clearance 67 adjacent the column which closes when the column is under load. Cylinders 25 and pistons 26 lift the upper platen 12. Admission of fluid pressure to cylinders 33 forces rams 32 downwards and causes the columns 30 and crosshead 35 to descend. Specification 710,780 is referred to.
Patent GB-803195-A (GB)
Title: Process for the production of melamine
Filed: 1956-10-22
Abstract: Melamine is prepared by heating a mixture of hydrogen cyanide and ammonia in the vapour phase at a temperature of 400-750 DEG  C. (preferably 450-600 DEG  C.) and at substantially atmospheric pressure in the presence of a dehydrogenation catalyst comprising an oxide of chromium and/or a metal of Group VIII of the Periodic System.  Specified catalysts are chromic oxide, platinum, palladium, nickel, cobalt or mixtures thereof.  Specified supports are silica gel, alumina, pumice, fuller's earth, kieselguhr, kaolin and charcoal.  The chromium oxide catalyst may contain 5 per cent of stabilizing agents such as difficultly reducible oxides of zirconium, titanium, silicon, thorium, boron or magnesium, light reducible oxides of tellurium or beryllium, or chromoxide gel.  The mol. ratio of hydrogen cyanide to ammonia is preferably at least 1:1 and more preferably from 1:4 to 1:10.  In the examples melamine is prepared by passing a mixture of vaporized hydrogen cyanide and ammonia through an electrically heated quartz tube containing a bed of catalyst consisting of activated alumina impregnated with chromic oxide, platinum, nickel or cobalt.  The melamine may be subsequently converted to the picrate or oxalate.
Patent GB-751212-A (GB)
Title: An improved appliance for the dipping of sheep
IPC: A01K13/00
Filed: 1954-11-05
Abstract: 751,212. Dipping sheep. MAWBET, C. P. Nov. 5, 1954, No. 32103/54. Class 5 (1). [Also in Group XXX] A sheep-dipping appliance comprises a tank containing dipping fluid, a cage suspended above the tank and an hydraulic ram having a piston at each end to operate means for raising and lowering the cage. Posts 15-18 fixed to the tank 12 support bearings 19-22 through which are.disposed rods 23 and 24 which carry pulley wheels at their ends. Ropes or chains 11 fastened to these pulley-wheels support the cage 10 which is constructed with end gates, sides of wire mesh and a bottom of wooden slats. Transverse struts 31 and 32 support a member 33 on which is mounted a double-pistoned hydraulic ram 34 which can raise or lower the cage through the medium of a system of ropes 38 and 39 acting on two pulleys 25 and 26 as shown in Fig. 4. Pressure for the hydraulic ram is fed through the nozzle 37.
Patent GB-1317974-A (GB)
Title: Preparation of plate elements provided with relief images
IPC: G03C1/705
Filed: 1970-07-02
Abstract: 1317974 Photographic processes TEEG RESEARCH Inc 2 July 1970 [3 July 1969] 32154/70 Addition to 1213461 Heading G2C A process for producing relief images comprises imagewise exposing a material comprising a support, a first layer of Cd, Sn, As, Bi, Co, Ge, In, Mn, Hg, Se, Si, Te, Tl or Vd and a second layer being different from the first layer and comprising S, Se, compounds and mixtures of M-X and M-X-Y wherein M is As, Sb, Bi, Se, Te, Cu, Zn, Cd, Hg, Pb, Cr, Ga, In, T1, Ge, Sn, Te, Co, Ni and Ag and X and Y are halogen, S, Se or Te to form a reaction product at the interface of the layers and removing the reaction product and any of the second layer above the reaction product. Alternatively the second layer may be applied as a gas or liquid. In an another embodiment, a material comprising a number of first and second layers may be used to obtain relief images of greater depth. The removal of the reaction product and second layer may be with a 0À5N solution of caustic or saturated solution of sodium sulphide. The relief image may be further treated as disclosed in Specification 1213461. Cadmium is preferred for the first layer whilst the second layer is preferably an arsenic sulphide or an As/S/I mixture.
Patent GB-742774-A (GB)
Title: Improvements in or relating to photographic shutters
IPC: G03B9/10
Filed: 1953-11-20
Abstract: 742,774. Photographic pivoted blade shutters. KODAK, Ltd. Nov. 20, 1953 [Nov. 21, 1952], No. 32219/53. Class 98 (1). A shutter comprises a pivoted shutter blade 14 having a slot 15 which at rest lies over the exposure aperture 2 in the shutter supporting plate 1 and a second pivoted shutter blade 31, and a cover blade 50 both of which overlie the aperture in the rest position, the cover blade being connected by a lever arm 60 to the shutter trigger 5 which upon exposure operation against a return spring 10 swings the cover blade clear of the aperture 2 and operates a lever 42 which tensions a spring 35 connecting it with the second shutter blade and thereafter trips a latch holding the blade at rest across the aperture 2, whereupon the second blade moves clear of the aperture to open the shutter and simultaneously tensions a hairpin spring 28 connecting it with the slotted blade 14, so that when the point 30 of attachment of the spring to the blade 31 passes the dead-centre position between the pivot 32 of this blade and the point 26 of attachment of the spring to the blade 14 the latter is driven anticlockwise to close the shutter. As shown, the second blade, cover blade and lever are coaxially pivoted at 32, the cover blade and lever are each pin-andslot connected to the trigger which is slidably mounted and the latch for the second blade is a spring-biased bell-crank lever 63 tripped by a lug 51 on the lever 42. On release of the trigger the cover blade and second shutter blade return to the rest position so that the latch is reengaged and the shutter blade is returned by reverse operation of the hairpin spring. For " bulb " exposures a pivoted arm 18 is moved clockwise so that its end 17 locks the blade 14 against movement.
Patent GB-191912-A (GB)
Title: Improvements relating to controlling devices for regulating the passage of cotton and other textile fibres through opening and cleaning machines
IPC: D01G9/00
Filed: 1921-12-02
Abstract: 191,912. Pilling, J., and Howard & Bullough, Ltd. Dec 2, 1921. Feeding openers &c. - An electromagnetic strap or clutch control is actuated either by the contents of a hopper to stop or start delivery to a preceding hopper; or by an ordinary lap-machine stop motion, when a full lap is made, to stop delivery to all preceding machines. The hopper 4, Fig. 1, feeds the hopper 2 preceding the opener 3. The electromagnetic control precedes the hopper 4 and is shown in Fig. 4, its circuits being controlled by a switch arm S and a sliding bar A<1>. Current from a magneto, battery, or transformer A is led by a wire C to contacts D, E on a sliding bar F, and passes through terminals G or J to the stopping electromagnet H or starting electromagnet K, thence by a wire M or P to the switch S and back to the magneto. Normally, the delivery is started by throwing over to the right a weighted lever R<1>. If the hopper 2 is too full, a lever U therein is depressed and turns a shaft T and the arm S to close the circuit of the electromagnet H. This attracts a lever P<1>, Fig. 5, into the path of a lug H<1> on a disc G<1> loosely mounted on a continuously-rotating shaft E<1>, thus locking the disc G<1> and causing the clutch N' to elide on the shaft and throw the lever R<1> over to the left to stop the delivery to the hopper 4. The lever R<1> also shifts the bar F so that the terminals E and J make contact and the terminals D and G are separated. As the hopper 2 empties, the lever U rises and the arm S turns and closes the circuit of the starting electromagnet K. This attracts a lever Q<1> and so locks the loose disc F<1>, and the clutch M<1> is moved to the right and throws the lever R<1> over to restart the delivery. A main cut-out switch D' is provided for use if a strap should break. The full-lap stop motion operates a lever X, Fig. 1, which pushes a bar A<1> so that a contact stud Z thereon is shifted from the circuit P, Q into a circuit B<1>, C' of the stopping electromagnet H. On restoring the lever X, the stud Z recompletes the circuit P, Q.
Patent GB-717026-A (GB)
Title: Process for the recovery of sulphur from hydrogen sulphide
IPC: C01B17/04
Filed: 1952-12-19
Abstract: In a process for recovering sulphur from hydrogen sulphide by interacting hydrogen sulphide and sulphur dioxide in two catalyst stages using a granular catalyst in fixed beds, the first stage being carried out at a temperature of about 300 DEG C. or higher such that sulphur is produced as a vapour and the second at a lower temperature such that sulphur such that sulphur is deposited on the catalyst, sulphur being separated from the gases leaving the first stage before passing them to the second stage, the process is carried out in an apparatus comprising three catalyst chambers for the following steps: (a) the second stage reaction when sulphur is deposited on the catalyst, (b) the first stage reaction when the deposited sulphur is vaporized, and (c) cooling from the higher temperatures employed in the first stage reaction to the lower temperature employed in the second stage reaction, in a cyclic manner such that each chamber is used for all three steps in the above sequence: The hydrogen sulphide is reacted with sufficient sulphur dioxide to convert all the hydrogen sulphide being treated to sulphur and water vapour assuming complete reaction, and the ratio of hydrogen sulphide to sulphur dioxide is preferably 2 : 1 by volume.  The catalyst may be alumina bauxite or bauxite promoted with iron oxide.  The temperature in the second stage reaction may be maintained at 150 DEG C.
Patent GB-795364-A (GB)
Title: Process and apparatus for increasing the solubility of powdered milk
IPC: A23C9/16
Filed: 1955-11-11
Abstract: 795,364. Milk powders. MIL-KO PRODUCTS, Ltd. Nov. 11, 1955 [Feb. 17, 1955], No. 32327/55. Class 49. A fine powder of dried milk in which a substantial proportion of the lactose is in the anhydrous form is converted to a readily soluble powder of larger particle size having the lactose predominantly as the monohydrate by directing steam as a band across a thin, wide falling stream of the fine powder. With the apparatus of Fig. 1, spray-dried milk powder having 60 per cent or more of the lactose as #-anhydride is fed from a hopper 10 on to a conveyer belt 13 to fall therefrom at 21 as a thin wide stream, the falling stream is subjected across its full width to steam from orifices between projecting lips 23 in a pipe 22, a temperature of 190- 200‹ F. being attained, and the steamed powder is collected on a conveyer belt 26 and carried through a chamber 38 where it is dried, under agitation by paddles 41, in air at 150-180‹ F. to a powder wherein the lactose is less than 50 per cent #-anhydride.
Patent GB-655995-A (GB)
Title: Improvements in or relating to a process for obtaining powdered metal for purposes of powder metallurgy
IPC: B22F9/22
Filed: 1948-12-14
Abstract: A process of obtaining powdered metals from chlorinatable metal oxides comprises chlorinating the oxides with gaseous hydrochloric acid at temperatures at which the chlorides formed are volatile, distilling the chlorides, purifying them through distillation, reducing the chlorides in a hydrogen current below their melting point to sponge metal, grinding the metal to a size of less than 0.2 mm., washing it with distilled water, drying and after reducing by hydrogen, separating the gaseous products of reduction into hydrogen and hydrochloric acid, and introducing the latter gas into the process.  The invention may be applied to the production of powdered iron from its oxide source materials, companion metals being obtained in the form of their chlorides or powdered metal as by-products.
Patent GB-392934-A (GB)
Title: Improvements in brake linings
IPC: F16D69/02
Filed: 1931-11-23
Abstract: 392,934. Brake linings. DENMAN, H. B., 655, Lakeview, Birmingham, Michigan, U.S.A. Nov. 23, 1931, No. 32389. [Class 103 (i).] A lining for brake shoes &c. comprises a friction facing 9 which while possessing the desired frictional qualities is of low tensile strength, bonded to a backing 10 of greater strength which permits of reveting the lining of the shoe &c. The friction material may comprise non-fibrous or short fibre asbestos or talc loaded with rubber or other vulcanizable material and a waterproofing agent such as a resin or wax. The backing may be of vulcanized rubber compound, of fabric, of fabric and rubber, or metal strip. The asbestos may be in the form of finely divided tremolite, actinolite, or asbestine. The wax may be ozokerite, beeswax, Montan wax, paraffin wax, or ceresin wax. In one process of making the friction material, a master batch is first made containing in parts by weight:- rubber, 100 ; rosin 25 ; and diphenylguanidine as a vulcanizing accelerator 1“. After mixing and sheeting out there is added to 25 parts of the batch: asbestos 85; lime 3 ; zinc oxide 1 : sulphur 7; wax 1¢. The mix is sheeted out and cooled. The lime and zinc oxide assist the subsequent vulcanization; magnesium oxide may also be added for this purpose. All the ingredients may instead be mixed in one operation. The proportion of asbestos instead of being about 70 per cent as above may be as low as 50 per cent. The vulcanizable material may be vulcanizable fatty residues. A hard backing material is made by mixing:- rubber 25 parts; sulphur 12¢ parts; whiting 51 parts, and small quantities of diphenylguanidine, lime and zinc oxide. The mixture is sheeted out. The backing 10 and friction facing 9 are then callendered together and vulcanized by placing between heated plates under pressure. Grooves 11 may be formed in the backing 10 to form cooling passages between it and the brake shoe &c. to which it is riveted.