baber/WOPTO huggingface dataset:
Patent GB-546452-A (GB)
Title: Improvements in or relating to thermostatic devices for controlling for cooling purposes the flow of fluids
IPC: G05D23/12
Filed: 1941-09-22
Abstract: 546,452. Valves. BRITISH THERMOSTAT CO., Ltd., and HURST, W. F. F. MARTIN-. Sept. 22, 1941, No. 12235. [Class 135] [Also in Group XIII] A thermostatic valve for controlling the oil cooling system of an aircraft engine, which is responsive to thermal and altitude changes and which moves into a safety position in the event of failure of either of the responsive devices, comprises a casing 1 having an inlet 2 connected to the delivery of a pump which withdraws oil from the engine sump, and outlets 5, 6 connected respectively to a cooler or radiator and to a byepass around the radiator. A sliding cylindrical valve 7 is connected to a thermal bellows 9 charged with a volatile liquid through a passage 19. The bellows is adjustable in position by a nut 16 threaded on the boss 15, with the necessary number of shims 17 between the end of the bellows and the casing. Expansion of the bellows is limited by contact of the plate 12 with the shoulder 18. The opposite end of the valve 7 is normally spaced from a second bellows 10 sensitive to altitude carried by a plug 26 in the casing and guided by a stem 28 sliding in a sleeve 29. This bellows is evacuated through a passage 31. The valve ports 33 are rectilineal, terminating at the thermal bellows end in tapered portions 34 to ensure a gradual change over from the byepass outlet to the cooler outlet. To permit escape of oil from chamber 25, an annular space surrounding the sleeve 29 is connected by a passage 35 in the housing to the space surrounding the bellows 9. As the oil temperature rises the bellows 9 expands and some oil is diverted to outlet 5 leading to the cooler, until the plate 12 engages its seating, when the byepass outlet 6 is closed. External pressure variations on the bellows 9 are compensated by the bellows 10 after a predetermined altitude, when the plate 27 is in contact with the member 24. If the bellows 9 fails, the byepass 6 is closed by the action of spring 11 up to the altitude at which compensation begins, after which bellows 10 presses back the spring until at the greatest altitude most of the oil is diverted through the cooler. If the bellows 10 fails, it acts only as a spring in the opposing bellows 9. In Fig. 5 (not shown), the inlet is connected through a pressure relief valve with the chamber surrounding the bellows 9. In Fig. 7 (not shown), damage to the bellows 9 due to abnormally high oil pressure is prevented by surrounding it by a sleeve the mouth of which is closed by the endplate of the bellows when retracted. In this case, the bellows chamber is provided with a plain extending portion projecting into the interior of the valve where it is subject to the temperature of the oil, in order that the bellows may be quickly responsive to temperature changes.
Patent GB-209381-A (GB)
Title: Improvements in and relating to furnace fronts for use with oil fuel furnaces
IPC: F23D11/00
Filed: 1923-05-07
Abstract: 209,381. Morse Dry Dock & Repair Co., (Assignees of Strachen, C., and Irish, D. J.). Jan. 5, 1923, [Convention date]. Spray burners. - The front of a liquid-fuel furnace is provided with two coaxial conical air passages formed by conical walls 9, 11, the outer wall 9 being secured to a plate 2 bolted to the front end of the furnace, and the inner wall 11 to a plate 12 connected with the wall 9 by helically arranged webs 13. Other helically arranged webs 33 extend between the wall 11 and a sleeve 34 through which passes the burner 35. The supply of air to the space between the walls 9 and 11 is regulated by pivoted vanes 14 operated by cams carried on a ring 19. The supply of air to the inner passage formed by the wall 11 is regulated by a " hit-or-miss " ventilator formed by a stationary plate 30 and a rotatable plate 31. The walls 9 may be formed in one casting with the wall 11, the plate 12, and the webs 13 and 33, and the whole hinged to the plate 2 to form a furnace door.
Patent GB-824112-A (GB)
Title: New and improved gas-producing compositions
Inventor: HARPER AUBREY EDWARD
IPC: C06B23/00
Filed: 1956-04-21
Abstract: 824,112. Explosive compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. Jan. 17, 1957 [April 21, 1956], No. 12275/56. Class 9(2) Gas-producing ammonium nitrate compositions capable of self-sustained non- detonating reaction include a minor proportion (e.g. 1.10% by weight) of a compound of iron, cobalt, or nickel. Suitable compounds are ferrous oxalate, carbonate, sulphide, lactate, citrate, formate, tartrate, glycollate, and malate, ferrous hydrogen citrate, ferric oxalate, potassium ferric oxalate, iron oxides, nickel carbonate, oxalate, and formate, and cobalt hydroxide, chromate, and oxalate. A chromium compound, a potassium salt, and a fuel may also be present in the composition. In examples, the fuels are hydrocarbon wax, anthraquinone, p - nitro - aniline, aniline-formaldehyde resin, terephthalic acid, and trinitrostilbene; other specified ingredients are potassium nitrate, ammonium dichromate, potassium dichromate, and chromium sesquioxide. When the compositions are used as charges in rocket motors, a reduced variation of operating pressure with temperature is obtained.
Patent GB-1026859-A (GB)
Title: Preparation of perhalopropanes
IPC: C07C17/18
Filed: 1965-03-23
Abstract: Perhalopropanes of the formula X1X2X3C-CCl2-CX4X5X6 wherein X1- 6 are chlorine or fluorine atoms are made by reacting a perhaloacetone X1X2X3C-CO-CX4X5X6 with phosphorus pentachloride at a temperature of at least 200 DEG  C.  It is preferred to use about 2 moles phosphorus pentachloride per mole perhaloacetone.  Examples relate to the preparation of (1) F2ClC-CCl2-CCl2F, (2)-(4) F3C-CCl2-CF2Cl, (5) F3C-CCl2-CF3, (6) ClF2C-CCl2-CF2Cl, (7) FCl2C-CCl2-CFCl2 and (8) Cl3C-CCl2-CCl3.
Patent GB-437244-A (GB)
Title: Process for the production of surfaces printed with coloured designs on aluminium and its alloys
IPC: B44C1/22
Filed: 1935-04-24
Abstract: 437,244. Printing processes; etching. PEINTAL SOC. ANON., 8, Avenue de la Gare, Lausanne, Switzerland. April 24, 1935, No. 12327. Convention date, April 25, 1934. [Class 100 (ii)] Coloured designs are produced on aluminium and its alloys by forming an oxide film on the surface, colouring the oxidized surface, and applying an alkaline agent partially or wholly to remove the coloured oxide film. The following examples are described: (1) an oxidized surface formed on a sheet of aluminium is dyed blue by means of alizarin-saphirol B. Corroded designs in lighter blue or in non- oxidized aluminium are then produced by applying a composition comprising starch, water, tragacanth, olive oil, and caustic soda, by means of a printing-roller or stencils. The sheet is finally cleaned with water or a weak acid such as lactic acid. (2) Characters are formed on a coloured oxide film with an alcoholic caustic potash solution applied by the use of stencils and a spray pistol. (3) A printing-paste comprising British gum, water, a wetting-agent such as sulphoricinic acid, and caustic soda, is applied by printing to oxide films coloured, for instance, by means of solutions of fatty colouring materials.
Patent GB-1284842-A (GB)
Title: Improvements in means for mounting freight containers on trailers and other vehicles
Inventor: HAWKINS JOHN CHARLES
IPC: B60P7/13
Filed: 1970-03-14
Abstract: 1284842 Stud and socket fastenings RUBERY OWEN & Co Ltd 19 April 1971 [30 Jan 1970 14 March 1970] 4514/70 and 12388/ 70 Heading E2B [Also in Division B8] A retractable twistlock coupling for securing containers to vehicles has a collar 9, Fig. 2, which holds the spindle 7 in the raised position shown in Fig. 4 when the spindle and collar are raised and rotated through 90‹. Shoulders 16 on the collar engage the walls 3 of a housing when the ends of the collar pass into slots 15 therein, so that the spindle may be rotated independently of the collar the two are coupled by spring-loaded balls 11 which engage either bores 22 or 14 in the collar. The coupling is rotated by a handle 21.
Patent GB-988139-A (GB)
Title: Improvements in scrapers
IPC: B44D3/16
Filed: 1964-03-24
Abstract: 988,139. Scrapers. 0. SANDE. March 24, 1964 [April 5, 1963], No. 12445/64. Heading B4B. A scraper comprises a handle 1 having a recess 2 in which is secured, by means of a screw bolt 5, a holder for an exchangeable scraper blade 7, the holder consisting of two bent-over sheet-metal members 3, 4 the longer limbs of which are secured, e.g. by welding, at the ends thereof remote from the bent-over portions.
Patent GB-723039-A (GB)
Title: Improvements in spreader stokers
Inventor: EVANS RICHARD HENRY
IPC: F23K3/18
Filed: 1952-05-16
Abstract: 723,039. Delivering materials from hoppers. BABCOCK & WILCOX, Ltd. May 15, 1953 [May 16, 1952; Oct. 27, 1952], Nos. 12495/52 and 26922/52. Class 78 (1). In a spreader stoker unit fuel is fed from the hopper 2 to the projecting means by a vibratory feeder 1. This feeder is slightly inclined downwardly and delivers the fuel either into the path of a rotary projector 90, Fig. 1, or on to a table 101, Fig. 2, from which it is blown by a jet of compressed air issuing from the orifice 110. The tray 1 is connected to the mid-points of leaf-springs 33, the ends of which are bolted to brackets on heavy side plates 34. These plates are suspended from the side plates 38 of the spreader by steel straps 39, the ends of which embrace rubber bushed pins 40, 41. The tray is adjustable longitudinally by a screw 50 and is vibrated by an electromagnet 70, 72. The quantity of fuel delivered to the tray is controlled by a pivoted gate 3 and the discharge from it is regulated by a plate 7 which is adjusted by rack-and-pinion mechanism. Leakage of fuel between the bottom of the wall 20 and the gate 3 is prevented by a seal plate 21 which is urged against the gate by springs 23. Specifications 692,629, 692,644, [Group XII], 692,645; 692,646, 717,176, 717,177 and 717,178, [all in Group XII], are referred to.
Patent GB-684761-A (GB)
Title: Improvements relating to electrical measuring apparatus
IPC: G01B7/02
Filed: 1949-05-11
Abstract: 684,761. Bridge circuits; linear dimension gauges. FIELDEN (ELECTRONICS), Ltd., and FIELDEN, J. E. May 1, 1950 [May 11, 1949], No. 12532/49. Class 37. A bridge type capacity responsive proximity meter or dimension gauge comprises a capacity pick-up or gauging element formed by an electrode attached to one end of a double - screened coaxial cable. In Figs. 1 and 2 a disc electrode b secured to the free end of a double-screened coaxial cable a develops a capacity to earth variable with the divergence from roundness of a piece of work h under test, Fig. 2. The capacity to earth of the disc electrode b is coupled through the coaxial cable a within one arm in a capacity, inductance R.F. oscillator fed bridge whose output via a two-stage amplifier V2, V3 feeds a diode valve-voltmeter V4 wherein the indicator f is thus deflected to show along an appropriately calibrated scale the divergence from roundness of the test specimen h. Full details are given of the steps involved in conditioning the apparatus for test use including the operation of instrument zeroizing variable capacitor C2 in parallel with the disc electrode capacity. The R.F. bridge supply transformer secondaries L3, L5, preferably wound from two strands of wire twisted together as described in Specification 635,526, [Group XXXV], in effect correspond to two inductances developing voltages in antiphase. The bridge is inherently energized by the two sections of secondary L5 which form the two inductive bridge arms and the centre tap or junction of these two arms is connected to the intermediate screening conductor in the coaxial cable a and feeds into the amplifier as shown a potential whose magnitude is related to the capacity to earth of the electrode b. One outer screen of the coaxial cable is earthed and likewise the other output point of the bridge is earthed, i.e. the junction of bridge arm capacitors C1, C2, and a diode V5 in conjunction with a variable resistor R1 is used to provide a backing off voltage to cancel out the small standing current in the valve voltmeter diode V4 due to space charge current at nil anode current condition of the amplifier.
Patent GB-252705-A (GB)
Title: Improvements in lamp suspensions
IPC: F21V21/16
Filed: 1926-05-17
Abstract: 252,705. Foell, J. May 17, 1926. Supporting.-An electric lamp is suspended by a chain b, a cord or the like, threaded through guide elements in the reflector a and in a bellshaped support f, so that it can be adjusted by varying the effective lengths of the different suspending stretches. The support f, preferably connected to the lamp wire g, is formed with a tubular guide rim e having apertures e<1> corresponding in number with guides d on the reflector a, the chain b being threaded through the guides d and through the segments of the rim e as shown in Fig. 4. The chain may be endless or the ends of the chain may be connected to an eyelet d or to a point on the rim e.
Patent GB-256703-A (GB)
Title: Improvements in inking mechanism for printing presses
IPC: B41F31/00
Filed: 1925-05-14
Abstract: 256,703. Squier, I. C. May 14, 1925. Inking-apparatus.-In an inking-apparatus for printing-presses, the ink is disseminated upon the distributing-drum by one or more series of discs or other rubbing-devices extending longitudinally of the drum and arranged tangentially thereto. Two rows of discs 2, Figs. 1 and 2, arranged in staggered relationship as shown in Fig. 2 are rotated in contact with the distributing-drum 1 by a worm 5 engaging worm-wheels 4 on the spindles 2<c> of the discs. Each disc comprises an annular rubbing portion 2<d>, secured bv a bevelled nut 2d to a head 2<b>, so that it can be readily renewed when worn. The discs are yieldingly pressed against the drum 1 by springs 6 upon their spindle.
Patent GB-495030-A (GB)
Title: Improvements relating to dynamo regulators
IPC: H02P9/24
Filed: 1937-05-04
Abstract: 495,030. Vibratory interrupters. LUCAS, Ltd., J., and LAIRD, J. A. May 4, 1937, No. 12667. [Class 38 (v)] [Also in Group XXXV] The output of a dynamo a is controlled by a resistance c in series with its field b, the resistance c being short-circuited intermittently through vibratory contacts d, e, the spring mounted armature f carrying contact d forming part of the magnetic circuit of a permanent magnet i the effect of which is opposed by an electromagnet g energized in accordance with the dynamo voltage and/or current. The armature f is attracted, to close contacts d, e, by the magnet r and is released to open these contacts when the electromagnet q is sufficiently energized. The member o co-operates with an adjustable screw member q to form a shunt path for the flux of the permanent magnet i. Specification 21813/12, [Class 38 (v)], is referred to.
Patent GB-919161-A (GB)
Title: Amplitude modulation system
IPC: H04B1/68
Filed: 1959-04-14
Abstract: 919,161. Amplitude modulating systems. RADIO CORPORATION OF AMERICA. April 14, 1959 [April 28, 1958], No. 12699/59. Class 40 (5). [Also in Group XL (b)] In a signal sideband modulator producing a signal compatible with ordinary double sideband A.M. receivers a non-negative modulating signal of the form α((t)=(1+a<SP>2</SP>+2a cos #.t) is passed through a circuit 13 taking log a, then through a network 21 phase-shifting through 90 degrees each harmonic component of log a before phase-modulating at 22 a carrier source 23, and the phase-modulated carrier is then amplitude modulated at 25 by a(t) after the latter is given a delay at 24 equal to any inherent delay of networks 13, 21. A phase inverting switch 26 may select either the upper or lower sideband. The output is of form cos (# o t+2a cos (# 0 +#)t+a<SP>2</SP> cos (# 0 +2#).t, and has twice the band-width of the modulation cos #.t but its upper frequency half may be removed by a filter 27 without much distortion. Alternatively the amplitude modulation path for a(t) may include a variable resistance squarerooting circuit, and the receiver include a square law detector, to reduce the system bandwidth by half. The non-negative modulating function a(t) may be derived by applying the modulation (1) in series with a limiter bias source 12 or (2) to a half-wave rectifier, then filtering and phase inverting the output and adding to it the original modulation. The log a circuit 13 may be a conventional triode circuit with series resistance connected between the input and a conducting grid electrode. The 90 degrees phase shift network 21 may be a tapped delay line having, where # is the upper frequency limit of its input, tappings spaced at 1/# delay intervals with the last tapping spaced at 1/2# delay from its end shorted to earth. Each tapping is connected through impedances 64-67, attenuating by values 2/# . 1/2n - 1 in turn, where n is an integer, to an adder 72 and since the wave reflected from the shorted end is of inverted phase, the output at 75 is multiplied by giving an output at 75 of same amplitude as the input but 90 degrees phase-shifted for all input frequencies relative to an output at 83, having the same delay as output 75. In a modification the network 21 is twice the length of that in Fig. 9 and the negative input to adder 72 is obtained, not by reflection, but from a phase inverter. In a further modification the amplitude modulating wave 90 degrees phase-displaced relative to the output of network 21 is obtained by applying the latter output to an exponential function generator. This may be a logarithm generator whose output, and with the output of network 21 subtracted from it, is amplified before retroactive feed-back to the input of the logarithm generator. The amplified subtracter output is then the exponential function.
Patent GB-731347-A (GB)
Title: Improvements in or relating to the vulcanisation of rubber
Inventor: LAUTSCH WILLY
IPC: C08K5/3432
Filed: 1951-05-30
Abstract: In the vulcanization of synthetic rubber the rubber in the unvulcanized state is mixed with a white or light-coloured synthetic filler and an alkyl pyridinium salt, the alkyl group of which is linked with the nitrogen atom of the pyridine via one of the functional groups <FORM:0731347/IV (a)/1> The synthetic rubbers may be polymers of 2-chlorbutadiene, or copolymers of butadiene with styrene or acrylonitrile, or polyethylene tetrasulphide.  The fillers are preferably the oxides of magnesium or aluminium, the silicates of calcium or aluminium or the carbonates of magnesium or calcium, or pyrogenic silicic acid.  The preferred pyridinium salts are octadecyl-oxymethylpyridinium chloride and oleoyl-N-methyl amido-methylpyridinium chloride which may be prepared according to the methods described in Specifications 471,130 and 575,119. Specifications 475,170 and 575,119 also are referred to.ALSO:A process for the vulcanization of natural rubber, synthetic rubber, or regenerated rubber comprises mixing the rubber in the unvulcanized state with a white or light coloured synthetic filler and an alkyl pyridinium salt the alkyl group of which is linked with the nitrogen atom of the pyridine via one of the functional groups <FORM:0731347/V/1>  The fillers are preferably the oxides of magnesium or aluminium, the silicates of calcium or aluminium or the carbonates of magnesium or calcium, or pyrogenic silicic acid.  The preferred pyridinium salts are octadecyloxymethylpyridinium chloride and oleoyl - N - methyl amido-methyl-pyridinium chloride which may be prepared according to the methods described in Specifications 471,130 and 475,119, [both in Group IV].  In examples, 3.6 parts of each of the above salts are separately mixed with 100 parts of first latex crepe rubber, together with active zinc oxide, sulphur, mercaptobenzthiozol disulphide, diphenyl guanidine, and alumina gel and the whole vulcanized.  Specifications 475,170 and 575,119, [both in Group IV], also are referred to.
Patent GB-1022859-A (GB)
Title: Electrostatic precipitator
IPC: B03C3/38
Filed: 1964-03-25
Abstract: 1,022,859. Electrostatic precipitators. HITACHI Ltd. March 25, 1964 [April 1, 1963], No. 12724/64. Heading B2J. An electrostatic precipitator for cleaning air has a precipitating section 7 disposed behind an ionizing section 6 which comprises grounded plate electrodes 1<SP>1</SP>, 2<SP>1</SP> and ionizing filaments 3<SP>1</SP>, the ratio D/ L  of the distance D between the filaments and plates to the length L of the plates being within a range from 0À6-2À0. As shown in Fig. 1, the filaments of stainless steel or tungsten wire are mounted on a frame 9 which is supported by insulators 10 in the precipitator housing 8 and connected to a high voltage source. The precipitating section comprises positive collecting plates 5 (5<SP>1</SP>) which are positively charged and negative collecting plates 4 (4<SP>1</SP>) which are grounded.
Patent GB-1020268-A (GB)
Title: Improvements in and relating to a method of and apparatus for spark erosion
IPC: B23H9/00
Filed: 1964-03-26
Abstract: 1,020,268. Spark erosion. PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd. March 26, 1964 [March 29, 1963], No. 12845/64. Heading B3V. In the machining by spark erosion of thin metals 1 the polarity of the applied voltage is initially such as to erode preferentially the working surface 3, Fig. 1, of the electrode 2 to suit the contour of the adjacent workpiece surface, then the polarity is reversed, Fig. 2, and the workpiece is eroded at 4 to reduce its thickness. The workpiece 1 may be a window of beryllium used in an X-ray tube, counting tube or micro-radiography tube. The electrode 2 is preferably of copper.
Patent GB-499094-A (GB)
Title: Improvements in or relating to the manufacture of grinding or abrading wheels
IPC: B24D18/00
Filed: 1938-04-29
Abstract: Abrasive grains for use in the manufacture of grinding-wheels for the preparation of wood pulp &c. are treated before manufacture of the wheel so as to blunt the edges of the grains, in order to avoid cutting or wearing of the fibres of the wood. The grains may be blunted by rolling in a drum, to which balls &c. may be added, by heating to a temperature close to that of softening, or by treatment with a chemical, for example, in the case of grains of artificial corundum, a solution of sodium or potassium carbonate; any of the above processes may be used in combination.  The blunted grains are made up into wheels with any desired bond.
Patent GB-665320-A (GB)
Title: Improvements in, or relating to pumps
IPC: A61M16/00
Filed: 1949-05-14
Abstract: 665,320. Cylinders. STRONG, E. C. N., and BRINTON, C. C. May 15, 1950 [May 14, 1949], No. 12897/49. Class 122(i). [Also in Group XXVIII] An oscillating cylinder pump 10 (see Group XXVIII) is rotatably mounted on a plinth by studs 13 and retained thereagainst by a spring finger, in a slot, which engages a groove 14 in the stud 13. The cylinder head 26 is provided with a boss 27 and holes 28 which engage pins 29 on the cylinder. The opposite end of the cylinder is closed by a similar plate 30 through which the piston rod passes. The head 26 and plate 30 are retained by a U-shaped clip 34 which engages the plate 30 and is drawn tight by a screw 35 which engages the head 26.