baber/WOPTO huggingface dataset:
Patent GB-711746-A (GB)
Title: Speed control device in particular for textile spinning frames
IPC: D01H1/24
Filed: 1952-03-26
Abstract: 711,746. Controlling variable-speed gearing. DEUTSCH, H. March 26, 1952, No. 7703/52. Class 80 (2) [Also in Group IX] An automatic speed control device of the type comprising a speed adjusting control member, two camwheels serving for simultaneous speed regulation in accordance with two control functions, rocker-lever type followers associated with the respective camwheels and adapted to receive motion therefrom, a draw member connecting each follower to the control member, each draw member being adjustably connected to its follower to vary the effective length of the follower, and an integrating member to sum the movements of the draw members, has at least one of the draw members of variable length, and both draw members connected by the integrating member directly to the speed adjusting control member. As shown, basic and cyclic speed impulses are fed into the device via shafts 15 and 16 (one behind the other) and these shafts, through worm and wormwheel gearing, rotate camwheels 21 and 22 which control rocker levers 40 and 41. To the rocker levers are attached members consisting of chains 48 and 49 threaded spindles 54, 55 and adjusting knobs 56, 57 which engage T-shaped carriers 58, 59 housing keeper pins 50, 51. These pins adjustably engage one of a series of notches 52 or 53 in the upper faces of the rocker levers. The other ends of chains 48 and 49 pass round sprockets 68 and 69 and are riveted thereto, said sprockets being pinned to a shaft 70 carried m ball bearings mounted on the adjusting lever 73. This mechanism forms an integrating device for the two motions of the rocker levers 40, 41. The adjusting lever 73 is pivotally movable on one of the stationary shafts 5, carries one of the peripheral sets of friction discs 4 and is cannected by links 7 to levers 6 for pivotally moving the other sets of friction discs. The drive shaft 8, drives, through friction discs 3, the friction discs 4, the positions and therefore speeds of which, relative to discs 3 are controlled by the lever 73 ; the friction discs 4 have connected thereto gears 9 which through idler gears 10 on the shafts 5 drive a gear 11 mounted on.the driven shaft 12 co-axial with the driving shaft 8. U.S.A. Specification 2,222,281 is referred to.
Patent GB-766088-A (GB)
Title: Spray gun
IPC: B05B7/04
Filed: 1955-03-16
Abstract: 766,088. Spray-producers. DE VILBISS CO. March 16, 1955 [March 29, 1954], No. 7726/55. Class 69 (3). In a spray gun in which material is atomized by an air stream, a small regulated proportion of an additive agent such as a catalyst, curing agent, coagulant, &c., is introduced into the air stream before the atomization, whereby the agent is thoroughly mixed with the material during its atomization. In Fig. 1 the gun has air and material inlets 4 and 8, and air and material control valves 10 and 35 respectively operated in known manner by a trigger 3. A further valve 29 controls the air flow to discharge passages 33 whereby the atomized stream is flattened; the remainder of the air discharges about the material tip 25. When the trigger is operated a small quantity of air descends from an annular space 15, down bore 47 and through passages 51, 52 and into a cylinder 53, Fig. 2, and acts upon a piston 54 to open a valve 44. The agent, fed at 7, is thereby allowed to pass through a tube 50 and from a nozzle 49 into the main air stream. The position of a groove 60 in the shoulder of the valve 44 relative the part 61 controls the quantity of agent flowing, and is predetermined by an adjustable stop 58. In a further embodiment the agent inlet is adjacent the material inlet at the front of the gun and the supply of agent is controlled by a needle valve directly operated by the gun trigger. A part of the air supply is led to air flattening jets and the remainder, which leads to the space surrounding the material outlet, is fed with the agent. In order to discontinue spraying when decrease in agent discharge occurs, a conventional flow meter 101 is arranged in the agent supply line 102, and depending from a float 103 is a secondary float and armature 106. The armature co-operates with an electric coil 107 when the flow rate drops, and the electric current fluctuation thereby produced in the coil is amplified and used to close a valve 111 controlling the delivery of spraying material through a line 112 to the gun. A warning light 109 is provided.
Patent GB-543310-A (GB)
Title: Improvements in or relating to electric glow-discharge tubes
IPC: H01J17/06
Filed: 1940-04-30
Abstract: 543,310. Discharge apparatus. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). April 30, 1940, No. 7784. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 4, 1940.] [Class 39 (i)] [Also in Group XXXVI] Glow discharge tubes have disc electrodes 2, 3 supported by leading-in rods 4, 5 of large diameter, to provide mechanical strength, and connected to the electrodes by contracted portions 6, 7 to reduce heat conduction. To increase the mechanical strength, the rods are sealed into the tube over a considerable length of more than three times their diameter. In a modification, the reduction of the cross-section of the rods at their junction with the electrodes is effected by axial bores extending from the faces of the discs into the rods. The electrodes and rods are of chrome iron, and the filling of the tube may be argon at a pressure of 7 cm. of mercury or neon with a small addition of argon.
Patent GB-117103-A (GB)
Title: Improved Method of and Means for bringing about Chemical Re-actions between Gases and/or Vapours by Means of Catalysts.
IPC: B01J8/02
Filed: 1917-06-02
Abstract: 117,103. Roy, C. S., and Morson & Son, T. June 2, 1917. Formaldehyde. - In an apparatus for carrying out catalytic reactions between gases and/or vapours, the gases are mechanically mixed in a mixing chamber communicating with a reaction chamber wherein the effective length of catalyst may be varied, the reacting substances being under the complete control of the operator. In the apparatus shown in the drawing, one gas, introduced through the tube 32 and adjustable valve 6, injects the second gas from the tube 15, the two gases passing through the mixing chamber 1 to the reaction tubes 35. The proportion and volumes of gases entering the chamber 1 may be kept under control, as any excessive pressure in the tube 32 acts upon the piston 23 and thus upon the controlling valves 17, 31. The catalytic agent may be contained with shallow sliding boats 38 or may consist of disks of gauze 47 within movable tubes 48, and in either case, the effective length of catalyst is variable by means of the rack 45 and pinion 46. A preheater 61 for the mixed gases may be provided, and also a baffle chamber 59 for cooling the products of the reaction, while the reaction chamber itself may be heated, if desired, by the burners 58. The products of the reaction may then be washed in the tower 65, through which a liquid is circulated by the pump 73, and the final reaction product then passes to an absorber, in which a solvent passes from the chamber 76, over baffles 81. 81<a>, and may be run off from the cock 89. The Provisional Specification describes the application of such apparatus to the production of formaldehyde from methyl alcohol vapour and air, using a silver-gauze catalyst in copper reaction tubes.
Patent GB-117283-A (GB)
Title: Improvements in and relating to Wireless Signalling Systems.
IPC: H04B1/30
Filed: 1917-06-02
Abstract: 117,283. British Thomson - Houston Co., (General Electric Co.). June 2, 1917. Wireless signalling; thermionic relays.-In a wireless receiving system, an evacuated electrondischarge tube 1, Fig. 1, is employed comprising a cathode 2, a grid 4 and a third electrode 5, and sources of potential 7, 8 connected thereto of such values that the device has a negative resistance between the cathode and the third elctrode; and the received oscillations are supplied to an auxiliary controlling grid 6 thereby varying the value of the negative resistance. The external circuit of the cathode and third electrode includes an inductance 13 and capacity 14 so adjusted that the circuit is resonant to the received frequency or to a frequency differing slightly therefrom. The external circuit also includes a telephone receiver 15 shunted by a capacity 16 adjusted to give resonance to an audible frequency, which in the case of damped waves, may be the group frequency. The incoming waves acting on the control grid 6 cause the device to set up oscillations of a frequency determined by the inductance 13 and capacity 14, and when damped waves are used, this frequency is equal to the wave frequency, while with continuous waves the local frequency differs slightly from the wave frequency, so giving heterodyne reception. The positive resistance of the external circuit between the cathode and the third electrode should be approximately equal to the negative resistance. In a modification, shown in Fig. 2, an ohmic resistance 18 is placed between the battery 8 and the cathode 2, and a connexion is made from an intermediate point 17 of this resistance through a battery 19 to the receiving oscillatory circuit 10, 12. These connexions give a reactive resistance coupling of the output circuit 2, 5 to the input circuit 2, 6. The voltage supplied by the battery 8 is of such a value that current flows through the tube from the cathode 2 to the third electrode. A rise in potential of the control grid 6 causes the current to increase, giving a greater potential gradient along the resistance 18 and therefore a further increase of potential at the point 17 and at the grid 6. In this way, losses in the aerial 9 and secondary circuit may be replaced without causing the production of oscillations.
Patent GB-1499101-A (GB)
Title: Hydraulically-operated braking systems for vehicles
IPC: B60T13/16
Filed: 1974-02-21
Abstract: 1499101 Aritiskid braking systems GIRLING Ltd 6 Feb 1975 [21 Feb 1974] 8008/74 Heading F2F An hydraulically-operated braking system comprises a brake controlled by a pump 1 responsive to rotation of a wheel so that the brake force is dependent on wheelspeed. The system includes an accumulator 8 connected to the brake line 20 through a valve 17 whose operation is controlled by the pressure from the pump. A bypass passage 28 allows the pump pressure to be applied directly to the brake in the event of exhaustion of pressure in, or failure of the accumlator. The pump supplies pressure fluid through a fixed orifice 2 to a pressure regulating valve 3 having a piston 4 working in a bore 5 to control communication between an inlet port 6 and outlet port 7 leading to the accumulator 8 through a one-way valve 9, the end of piston 4 remote from the port 6 being exposed to pressure in the accumulator and being urged to oppose that pressure by a spring acting on a piston 11 in a cylinder 12 of diameter greater than bore 5 and the piston 11 having a head 13 for regulating flow through an orifice 14. An actuating valve 29 is operated by a brake pedal or by a pedal-operated master cylinder and controls pressure to valve 17 which supplies fluid to the brakes via a conduit 20. The circuit also includes two valves 35, 45 which vent the fluid to effect a rapid reduction in pressure on rapid deceleration of the pump and hence the wheel.
Patent GB-868515-A (GB)
Title: Improvements relating to apparatus for degasifying metal melts
IPC: C21C7/10
Filed: 1959-03-09
Abstract: 868,515. Degasifying metals. DORTMUND-HORDER HUTTENUNION A.G. March 9, 1959 [March 13, 1958], No. 8093/59. Class 72 An apparatus for degasifying molten metals comprises a container for the, melt, a vacuum vessel disposed above the container, and a circular pipe extending from the vessel to the container, the cross-sectional area of the pipe, in sq. cms., being 18-160 times the square root of the content, in tons, of the container. As shown, a vacuum vessel 1, adjustably supported above a container 2 for the molten metal, has a pipe 3 of the required dimensions leading from the bottom of the vessel into the metal in the container. It is stated that the wear in the pipe is reduced when it fulfils the above requirements.
Patent GB-1368335-A (GB)
Title: Rollers for grinding mills
IPC: B02C4/30
Filed: 1972-02-22
Abstract: 1368335 Roller-and-ring mills CARLE & MONTANARI SpA 22 Feb 1972 [4 Dec 1971] 8151/72 Addition to 1277166 Heading B2A A mill of the kind described in the Specification 1,277,166 comprises grinding rollers, each including a plurality of sharp edges on the cylindrical surface, the edges making at least two different angles with lines parallel to the roller axis and which intersect them. These are provided by projections from the surface or by the intersection of a groove or grooves or recesses with the cylindrical surface. Examples comprise a composite roller having sections with oppositely- or differently directed grooves, Figs. 1, 2, or with different surface patterns, e.g. holes, Fig. 5, lozenges, Fig 6, or studs. Fig. 8.
Patent GB-268366-A (GB)
Title: Method of producing electric lead accumulators
IPC: H01M4/23
Filed: 1927-03-24
Abstract: 268,366. Aletter, F. March 29, 1926, [Convention date]. Electrodes.-Charged accumulator plates are discharged in acid until they are completely or for the greater part converted into lead sulphate. They are then re-charged. A cell containing the discharged plates may be sent out empty or with a filling of gelatinous or dry silicic acid or other dry filling. When the cell is required for use, water is added and the cell charged, the water being converted into acid in the process, Sodium sulphate may be added to the water to increase its conductivity.
Patent GB-284197-A (GB)
Title: Improvements in and relating to processes for the treatment of the skins of sharks and other fish of the same kind
IPC: C14C13/00
Filed: 1927-03-24
Abstract: 284,197. Ehrenreich, A. Jan. 24, 1927, [Convention date]. Treatment preliminary to tanning.-Dermal armour is removed from the skin of sharks &c. either before or after tanning by means of phosphoric or hydrofluoric acid. Sodium chloride or a salt, e.g. an alkali salt, of either of these acids may be added to the bath and salts of heavy metals such as copper, nickel or lead or salts of aluminium may be added as catalytic accelerators. An electric current of low voltage may also be employed to accelerate the action. The operation may be carried out in a vessel in which the liquid is caused to circulate by jets of compressed air.
Patent GB-308350-A (GB)
Title: Apparatus for heating air in dry spinning of artificial threads
IPC: D01D5/04
Filed: 1929-03-13
Abstract: 308,350. Aceta Ges. March 22, 1928, [Convention date]. Apparatus for making filaments. - To heat the air supplied to the spinning cell a, a passage e is provided in such a manner as to surround either the whole or a part of the heating-jacket b. Heat-insulating material h may surround the outer jacket e. The heating jacket may be supplied with steam or hot liquid, or it may be heated by an electric resistance coil.
Patent GB-471335-A (GB)
Title: Improvements in or relating to portfolios, temporary covers and like protective bindings
IPC: B42D3/08
Filed: 1936-03-19
Abstract: 471,335. Temporary binders. CHIVERS, Ltd., C., and WALL. E. W. March 19, 1936, No. 8226. [Class 146 (i)] A binding-case for periodicals, catalogues, or the like has a flexible back A and covers B, E one at least. of which is wholly composed of a rigid transparent material such as celluloid or a substitute therefor. The celluloid cover E is attached to the back by adhesive preferably together with reinforcing metal strips F having screws or rivets F<1> passing therethrough. Elastic cords C or other means may be provided for securing the periodicals in the case. The flexible back A may consist of a spring back.
Patent GB-457163-A (GB)
Title: Improvements in the production of phosphoric acid
IPC: C01B25/22
Filed: 1936-03-19
Abstract: Phosphoric acid with a content of 23 to over 30 per cent of P2O5 is obtained by reacting materials containing calcium and phosphoric acid, e.g. raw phosphate, with sulphuric acid, with the aid of phosphoric acid recirculating during the process, but without the recirculation of any unseparated reaction product slurry and with the formation of calcium sulphate as the di-hydrate and the separation and washing of the latter by filtration, the quantity of phosphoric acid introduced into the reaction being not greater than 2 litres, preferably 1--1,2 litres, per kilogram of phosphate reacted and the separation and washing of the calcium sulphate dihydrate taking place in a single filter apparatus.  A circulating filter belt may be employed for the filtration and washing.  The necessary sulphuric acid may be added in two portions, the second portion being added only after all the phosphate and the whole of the circulating phosphoric has been mixed with the first portion, if desired in a separate reaction vessel.  According to the example, 1000 Kgs. of pebble phosphate are mixed with 1000 litres of phosphoric acid having a content of P2O5 of 17,5 per cent and a temperature of 30 DEG  C. This mixture is introduced into an agitator with 500 litres of 60 DEG B<\>ae. sulphuric acid.  After some time a further 150 litres of sulphuric acid are added.  The temperature rises to 70--80 DEG  C. When the reaction is complete the slurry is filtered on a belt filter.  Here, 850 litres of phosphoric acid having a P2O5 content of 30,2 per cent is separated, and the filter cake is washed first with a washing acid containing 4 per cent of P2O5 to produce phosphoric acid of 17,5 per cent P2O5 for recirculation and finally with water to produce the washing acid containing 4 per cent P2O5. The process may be effected continuously.
Patent GB-663240-A (GB)
Title: Synthesis of octyl alcohols
IPC: C07C29/16
Filed: 1949-03-28
Abstract: Oxygenated compounds are made by reacting heptenes with carbon monoxide and hydrogen at 300-360 DEG  C. and 2900-3500 p.s.i. in the presence of a cobalt salt of a fatty acid so that a body of cobalt material is maintained in the reaction zone and the quantity of cobalt compound calculated as metal dissolved in and removed from the reaction zone in the effluent is of the same order as the cobalt compound calculated as metal added with the feed.  Products from the carbonylation zone are preferably cooled and separated into liquid and gaseous phases and the gaseous phase and at least part of the liquid phase recycled to the reaction zone, c.f. Specification 647,363.  The remainder of the liquid phase is treated in the normal fashion for alcohol production.  In an illustration a C7 olefine non-selective polymer cut is mixed with cobalt naphthenate, the weight of Co in solution being 0.1-0.3, preferably 0.15-0.3 per cent, of total liquid, preheated to 475-525 DEG  F., and passed to the bottom of a primary reactor which may contain conventional packing. Hydrogen and carbon monoxide is approximate vol. ratio of 1.0 to 1.2 : 1 is fed to the reactor and may be fresh feed or recycled gas and synthesis is effected at 2900-3500 p.s.i., preferably at about 3000 p.s.i., and at 300-360 DEG  F., preferably 340-360 DEG  F., with an olefine fresh feed rate of from about 0.4-0.6, a fresh synthesis gas feed rate of 2000-3000 cu. feet/barrel of olefine and a nominal residence time of olefine of about 2 1/2 hours.  Cooling of the reactor is effected by recycling product, as described above in the preferred treatment of the product.  Recycle gas rate is about 6000 cu. feet/barrel of olefine feed.  The product before decobalting may be purged with hydrogen, c.f. Specification 629,915, and hydrogenation is preferably effected at about 400-500 DEG  F., about 2800-3200 p.s.i., with a liquid feed rate of about 0.6 v./v./hour and a recycle gas rate of about 15,000 cu. feet/barrel.  A number of conventional hydrogenation catalysts are specified.  The hydrogenated product is purified and an octanol cut of boiling range 350-375 DEG F. taken.  Tables are provided which show the effect of temperature variation in which higher or lower temperatures than those specified result respectively in accumulating or stripping the cobalt in the reaction zone, and of other reaction variables in two runs to produce octanols.
Patent GB-1104567-A (GB)
Title: Polymeric dispersing agents
IPC: C09K23/00
Filed: 1966-02-25
Abstract: A dispersing agent substantially free from flocculating properties comprises a water-soluble hydrolysed polyacrylonitrile (or a polymer produced by a copolymerization reaction and having substantially the same structure as the hydrolysed polyacrylonitrile) having a molecular weight of from 5000 to 40,000 and having from 20-30% amide units and 70-80% carboxyl units.  The polymer is preferably prepared by hydrolysing polyacrylonitrile of appropriate molecular weight with NaOH in an aqueous medium at elevated temperature, e.g. between 50-100 DEG  C. In an example, the parent polymer is obtained by polymerizing acrylonitrile in water using an ammonium persulphate/sodium bisulphite catalyst.ALSO:A dispersing agent suitable for keeping particles of insoluble substances suspended in aqueous systems to prevent fouling of equipment or surfaces comprises a water-soluble hydrolysed polyacrylonitrile (or an equivalent polymer produced by copolymerization) having a molecular weight from 5000 to 40,000 and having from 20-30% amide units and 70-80% carboxyl units. An example illustrates the effectiveness of the dispersant in aqueous suspensions of kaolin and g -iron oxide (Fe2O3).
Patent GB-1234721-A (GB)
Title: Improvements in gas valves
IPC: F23N5/10
Filed: 1969-02-17
Abstract: 1,234,721. Burner controls. JUNKERS & CO. G.m.b.H. 17 Feb., 1969 [16 Feb., 1968], No. 8405/69. Heading F4T. A gas ignition safety device having a housing (101), 102, 103 and two adjacent keys 22, (36), displaceable therein along parallel axes, for controlling a main valve and an ignition safety valve, and for shutting off the gas supply, respectively, also comprises an electrically insulating cap 50 secured on the housing under a hood 70, the cap having an aperture 52 for guiding the keys and a space 54 defined by walls 60, 60, 62 on the cap to receive and support a Z-shaped spring contact 55 whose one end 57 engages with a contact 56 on the underside of key 22 when the key is in its normal position to short-circuit current e.g. high tension current from a piezoelectric device, and when the key 22 is depressed to allow gas to flow to a pilot burner the contacts are separated and current flows to an ignition block having a spark gap. A hollow rivet 63 secures the other end 58 of contact 55 to a flange 59 in the cap and secures a pin 64, which may be connected to the piezoelectric device, to the other side of the flange so that it lies between walls 65 on the cap. A member (45), Fig. 2 (not shown), is slidable on the side of the cap remote from the contact 55 and controls the movement of the keys in a manner similar to that described in Specification 1,149,955. Reference has been directed by the Comptroller to Specification 1,149,955.