baber/WOPTO huggingface dataset:
Patent GB-342119-A (GB)
Title: Improvements in or relating to the extraction of formic acid from the residual lye from the purification of cellulose
IPC: C07C51/48
Filed: 1930-01-22
Abstract: The liquor which has been used for purifying cellulose by the process of Specification 318,868, or reduced pressure, while vapours of nitric acid, [Class 2 (ii), Cellulose &c.], is treated with an acid or acid salt such as sulphuric acid or sodium bisulphite and formic acid is distilled off.  Preferably concentrated lye is used.  Sodium sulphate is recovered from the residue by lixiviation before or after calcination.ALSO:Formic acid is obtained from the liquor which has been used for purifying cellulose by the process of Specification 318,868, [Class 2 (ii), Cellulose &c.], by adding an acid or acid salt such as sulphuric acid or sodium bisulphate, and distilling. Preferably concentrated lye is used.  Sodium sulphate is recovered from the residue by lixiviation before or after calcination.
Patent GB-1370741-A (GB)
Title: Compensated liquid metering system and method
IPC: G01F1/12
Filed: 1972-01-18
Abstract: 1370741 Fluid-flow metering HALLIBURTON CO 18 Jan 1972 [18 Jan 1971] 2298/72 Headings G4D D7X D6Y D6C1 and D6C2 The measurement of fluid-flow in a pipe-line 12, Fig. 1, by counting pulses in a counter 42 is corrected for temperature variations in the fluid. As described, for each pulse from a transducer 10 metering oil flow, a bi-stable 16 is set to its "one" state for a fixed time interval to enable a gate 20 to pass a predetermined number of pulses from a fixed frequency oscillator 34 via a scaler 28 to a subtractor 30. The bi-stable also enables a gate 18 for the same time interval to pass pulses from a transducer 36 giving an output signal the frequency of which is dependent on the temperature of the fluid. The pulses from gate 22 are fed via a scaler 40 to the subtractor 30 for subtraction from the pulses from scaler 28, the output from the subtractor feeding the counter 42 which consequently has a count corresponding to the temperature corrected flow. The resetting of the bi-stable 16 at the end of the fixed duration time interval is effected by counting output pulses from the gate 20 in a scaler 26 which after a predetermined number of pulses resets the bi-stable. The transducer 36 comprises a thermistor (R t ) Fig. 3, (not shown), (which is the subject of the claims of Specification 1370742), in the shunt arm of a parallel T oscillator 50 comprising a series-connected capacitors 70, 72 in parallel with seriesconnected resistors 66, 68, the oscillator output, taken from the collector of transistor Q2, being fed back to the junction between capacitor 70 and resistor 66. After amplification by amplifier 52 the oscillator output is fed to the base of a  transistor Q5 connected across a series-connected resistor 62 and battery 58, the collector of the transistor being connected yia capacitor 64 to output line 60 including the AND gate 22. Resistor 92, capacitor 94 and Zener diode 96 smooth and regulate the voltage applied to the oscillator 50 from the battery.
Patent GB-373956-A (GB)
Title: Improvements in or relating to electric motors more particularly for talking machines
IPC: H02K17/08
Filed: 1932-01-26
Abstract: 373,956. Induction machines. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. Jan. 26, 1932, No. 2310. Convention date, Feb. 21, 1931. [Class 35.] An induction motor, more particularly for driving talking machines, has a conducting drum rotor 1 arranged between an unwound yoke 9 and a stationary three-limbed core, and the coils 8a on the outer limbs 8 are connected in series with a condenser 10 and in parallel with the coil 7a on the middle limb 7. The two coils 8a may be in series, and the outer core limb which carries the smaller flux may be of reduced section.
Patent GB-104019-A (GB)
Title: Improvements in or relating to Electrical Air Purifying or Conditioning Apparatus.
Inventor: BERRY ARTHUR FRANCIS
IPC: F24F3/16
Filed: 1916-02-16
Abstract: 104,019. Berry, A. F. Feb. 16, 1916. Gases, electrically precipitating suspended particles from.-In apparatus for heating, humidifying, or conditioning air, for instance as described in Specification 12694/15, [Class 137, Ventilation], dust is removed by means of electrified screens composed ot wire and textile threads woven together. One or more such screens may be used, and the screens may be connected to one or to each of the terminals of a source of high-tension current; or a screen may be connected directly to one terminal and through a very high resistance to the other terminal. The screens b may be arranged as shown in Fig. 1 in a frame c behind a safety grating i, or in combination with a heating-element n, Fig. 3, the screen b being arranged over a bath k of liquid, such as vegetable oil, which may be made to wet the screen, for instance by means of fibrous material m depending from the screen and dipping into the oil; or two screens may be used, Fig. 4, the second screen b<1> being immersed by the oil; or a number of spaced screens may be used, Fig. 5.
Patent GB-377667-A (GB)
Title: Process for the removal of cyanogen compounds from gases
IPC: C10K1/12
Filed: 1931-01-24
Abstract: Cyanogen compounds are removed from gases by treatment with alkali (e.g. ammonium) polysulphide liquor containing polysulphides higher than the bisulphide, sufficient excess of said higher polysulphides being maintained to prevent the formation of monosulphide.  This is effected by adding before or during the washing process, not less than one molecular equivalent each of sulphur and ammonia for each cyanogen group present in the gas in the form of dicyanogen or hydrocyanic acid.  Complete removal of cyanogen compounds is effected even at temperatures above 30 DEG  C., e.g. 60-70 DEG  C.  A wash liquor of the correct composition should, on acidification, give immediately an opaque suspension of sulphur.
Patent GB-1367000-A (GB)
Title: Cooling tube ferrule
IPC: B01D51/10
Filed: 1972-01-18
Abstract: 1367000 Heat exchange elements FOSTER WHEELER Ltd 18 Jan 1972 [18 Jan 1971] 2440/72 Heading F4S An insert 24 at the inlet end of a heat exchanger tube 10 in which hot hydrocarbon gas is cooled, comprises an outwardly flared mouth 28 at its inlet end, and a central portion 32 separating the inlet end from an outlet end 30, the latter having a larger outside diameter than that of the central portion 32. As shown, each tube end is welded at 18 to a tube plate 12 one face of which is covered by a refractory layer 20 to withstand the heat of the incoming gases. The mouth 28 has a thickness greater than that of the central and outlet end portions of the insert, and projects through and beyond the layer 20.
Patent GB-258773-A (GB)
Title: Improvements in or relating to the liquefaction and separation of gaseous mixtures
IPC: F25J3/04
Filed: 1925-05-25
Abstract: 258,773. Mewes, R. C. E. May 25, 1925. Separating gases by liquefaction.-Cold losses are repaired in separation processes involving partial condensation in a condenser by means of liquid generated in a separate liquefier by twostage expansion in a high-pressure circuit. Air enters the column 1, Fig. 1, at the point 2, and is partly liquefied, the liquid being expanded through a valve 6 to the space 7 surrounding tubes through which the residual gas rises. The gas is washed by liquid nitrogen supplied through a valve 11 from a vessel 9 into which the nitrogen expands from a circuit containing a compressor which raises the pressure to 150-200 kilogrammes per square centimetres. Oxygen and nitrogen are withdrawn at the points 17, 16. In a modification, the oxygen passes to the base of a second column, like the first and receiving liquid nitrogen from the same circuit. Fig. 4 shows a column fitted with two nests of tubesabove a plate rectifier, the space surrounding the lower tubes receiving the oxygen liquid through an expansion valve, and the space around the upper tubes receiving air or nitrogen passad through the vaporizing coil 35 and an expansion valve 37. The lower tubes may be omitted, and the oxygen withdrawn as vapour from the evaporator.
Patent GB-101172-A (GB)
Title: Improvements in or relating to Means for Supplying Air to Furnaces, Stoves and the like.
Inventor: BROWN WILLIAM HAMILTON
IPC: F23L9/00
Filed: 1916-02-19
Abstract: 101,172. Brown, W. H. Feb. 19, 1916. Air, supplying; doors.-In a furnace, stove, or the like, air is supplied above the fuel on the grate through a number of curved and downwardly-directed tapering tubes passing through the double walls of the fire-box. The fire-door may also be provided with a somewhat similar airsupply tube. Fig. 1 shows a boiler furnace of the locomotive type wherein the air-supply tubes C are provided with a head or flange 13<b> engaging with the inner wall of the fire-box, and the inlet ends of the tubes are rolled into the outer wall at 13a. The fire-door 7 is provided with openings 8 delivering into the tube B, which is secured to the door by the flange 10.
Patent GB-294850-A (GB)
Title: Improvements in the manufacture of screens for illuminated picture projection
IPC: G03B21/62
Filed: 1928-01-26
Abstract: 294,850. Harper, M. Jan. 26, 1928. Projection screens are coloured with a mixture in equal proportions of transparent red, yellow and blue dyes or pigments to give them a deep neutral tint. The screens may be of glass frosted on either or both sides, of celluloid, hardened gelatine, &c., with a matt surface, or of linen or like fabric made translucent with varnish. gelatine, &c. Analine dyes may be used, and the dyes &c. may be sprayed on to the screen surface or embodied in the screen.
Patent GB-792532-A (GB)
Title: Improvements in or relating to knitting machine
IPC: D04B15/06
Filed: 1956-01-26
Abstract: 792,532. Knitting-machines. SCOTT & WILLIAMS, Inc. Jan. 26, 1956 [Jan. 28, 1955], No. 2611/56. Class 74 (2). The sinkers of a circular machine, in which loops are drawn by the needles over a small platform 32 behind the sinker nebs 28, have a recess 34 formed immediately behind the small platform of such configuration that the outer portions of the needle latches 10, as the latches are opened when the needles are raised; are clear of and cannot engage the top edges or sides of the sinkers to cause loop distortion or yarn breakage.
Patent GB-560557-A (GB)
Title: Improvements relating to induction meters
IPC: G01R11/36
Filed: 1943-02-17
Abstract: 560,557. Supply meters. LANDIS & GYR, SOC. ANON. Feb. 17, 1943, No. 2616. Convention date, Feb. 19, 1942. [Class 37] In an induction meter the voltage coil is wound with aluminium or other wire of lower conductivity than copper but occupying the same winding volume, quadrature between the current and voltage driving fluxes being established by displacing one or both of these fluxes. Figs. 4 and 5 show means for advancing the phase of the current driving flux as compared with the main current in order to attain quadrature with the voltage driving flux. The current magnet 1, Fig. 4, is provided with current coils 2, 3 of aluminium wire of impedance Z1. In parallel with these coils is a second impedance Z2 in the form of a coil 4 on a closed iron core 5, the reactance of this coil being greater than the reactance of the current coils 2, 3. The phase of the current driving flux may be adjusted to exact quadrature with the voltage driving flux by means of a resistance 17 in series with the current coils 2, 3. In the construction shown in Fig. 5 the current core is provided with a magnetic bridge 6 having the current windings 2, 3 of impedance Z1 on one side and further coils 7, 8 of impedance Z2 on the opposite side. These coils are wound oppositely to the coils 2, 3 and are connected in parallel with them. Figs. 6 and 7 show means for retarding the phase of the voltage driving flux. A short-circuited winding 9, Fig. 6, surrounds the centre limb of the voltage magnet. The short-circuit winding can also be fitted in the form of a ring 10 on the voltage pole 11. The airgaps may be reduced as compared with those in voltage magnets wound with copper coils by the insertion of iron angle-pieces 12 wedged with brass distance-pieces 13. In another construction, Fig. 7, the centre limb of the voltage magnet is formed with a magnetic bridge 14 between the voltage coil proper 15 and a further coil 16 in parallel therewith. By adjusting the ratio of the reactances of these coils, as by a regulating resistance, any desired shifting of the phase of the voltage driving flux can be attained. A further means of displacing the phase of the voltage flux consists in making the driving disc thicker than a disc for use with a copper-wound voltage coil.
Patent GB-916803-A (GB)
Title: Vaccine for the protection of humans against trachoma
Inventor: COLLIER LESLIE HAROLD
IPC: A61K39/118
Filed: 1959-01-23
Abstract: A vaccine for protection of humans against trachoma comprises purified virulent or attenuated living trachoma virus or inclusion blennorrhoea virus and an injectable pharmaceutical carrier or diluent.  The attenuated virus is obtained by many passages through a host such as thick embryos, tissue cultures and animal hosts.  It is preferred to cultivate the virulent or attenuated virus in thick embryos which are 6 to 8 days old at inoculation.  The embryos are inoculated via the yolk sac with a suspension in saline of yolk sac infected with the virus and containing streptomycin to prevent bacterial infection and are incubated at 35 DEG  C. until the yolk sac is rich in virus, any eggs dying within 72 hours of inoculation being rejected.  Infected yolk sacs free from bacteria are homogenized with phosphate buffered saline and centrifuged at 200 G for 5 minutes to remove impurities.  The supernatant is mixed with more phosphate buffered saline and centrifuged at 40 DEG  C. and 12,000 G to deposit the virus.  The process is repeated on the deposited virus to bring about further purification.  The virus is resuspended in phosphate buffered saline and mixed with sterile aqueous gelatine to give a final concentration of 10% aqueous gelatine.  When required for use, the freeze dried product is reconstituted with sterile pyrogen free water.  The gelatin is used to inhibit denaturation of the virus during freeze drying and may be replaced by dextran.  Specification 764,718 is referred to.
Patent GB-728858-A (GB)
Title: Combined depth and draft control for tractor-drawn implements
IPC: A01B63/111
Filed: 1953-01-29
Abstract: 728,858. Agricultural implements. BENDIX AVIATION CORPORATION. Jan. 29, 1953, [Feb. 25, 1952], No. 2625/53. Class 6 (1). A combined hydraulic draft and depth control for a tractor mounted plough comprises a hydraulic cylinder 25 connected by lines 34, 35 to a valve body 36 to which is connected a pressure line 37 leading from a pump 38 and an exhaust line 39 connected to a reservoir 40. A spring urged valve 43 is movable in the body 36 and is actuated for depth control by a sleeve 50 to which is pivoted a lever 56 movable bv a hand lever 55, the other end of the link being connected by a link 62, lever 63 and link 64 to an extension on the piston 26. Movement of the handle 55 into any selected position maintains the plough at a corresponding depth. For controlling the implement draft an upper link 20 is provided with a rod 21 which is urged to the left (as seen in the drawing) by a spring 23 contained within a housing 22 and bearing against a disc 21a on the rod 21. An increase of draft rotates the plough frame compressing the spring 23 and moving the rod 21 to the right as seen in the drawing. The rod is attached to a bellcrank lever 70 to which is attached a pin 51 which extends through the tube 50 and controls the valve. The bell crank lever 70 is adjusted by a handle 75 which has the effect of changing the main position of the rod 51 relative to the valve element 43. The depth of working of the plough is determined by the setting of the control handle 55, and a constant draft determined by the setting of the draft control handle 76 is maintained.
Patent GB-1044411-A (GB)
Title: Printing attachments for business machines
IPC: B41F17/02
Filed: 1965-01-21
Abstract: 1,044,411. Printing-apparatus. MARCO Inc. Jan. 21, 1965 [April 10, 1964], No. 2761/65. Heading B6C. Rotary printing machines.-A printing device, adapted to be attached to a machine such as a trimmer 11 for removing the punched marginal material from a web 13, comprises an impression roller 17, a removable plate cylinder unit 15 including a plate cylinder 61, and a removable inking unit 16 including a forme inking roller 111. The shaft 18 of the roller 17 is positively driven by means of an endless belt, Fig. 2 (not shown), and the roller 111 and the cylinder 61 are driven from said shaft by gear means. A guide roller for the web is freely mounted on each side of the cylinder 61 on its shaft 49, each roller having a tread of rubber or felt. Cylinder tripping.-Rotation of a shaft 31 alters the printing pressure by bringing a pair of cams 32 into engagement with blocks 20 which support the bearings of the roller 17. The roller 17 is movable vertically and the blocks are biased by means of springs 39, the roller being locked in its adjusted position by a locking device, Figs. 15, 16 (not shown). Inking apparatus.-Ink is supplied to the roller 111 by a roller 95, the rubber surface of which is formed with a plurality of annular ribs 95b so dimensioned that the ink is maintained between the ribs by surface tension. Manual pressure on a housing 96 lowers the roller 95 against spring pressure into contact with the roller 111, as required, and the roller 95 may be pivoted about a shaft 97 during printing to replenish the ink supply. The roller 95 is mounted by means of a spring-loaded plunger, Fig. 9 (not shown), and may be replaced by a similar roller supplied with ink of a different colour. A roller 116 engages the periphery of the roller 111 and is axially reciprocated by means of a follower member which engages a threaded cam track on the shaft of said roller 116, Figs. 10, 11 (not shown). Printing surfaces.-The cylinder 61 is secured to its shaft by a set-screw and is provided at one end with a fixed radially projecting flange and at the other with a spring-loaded collar, Fig. 7 (not shown). The signature plate 64 is retained between the flange and the collar and may be easily removed. A plurality of plates may be mounted on the same cylinder. An alignment collar is located on the cylinder shaft 49 to facilitate registration.
Patent GB-556464-A (GB)
Title: Improvements in or relating to variable electric resistances
IPC: H01C10/32
Filed: 1942-03-02
Abstract: 556,464. Variable resistances. MORGAN CRUCIBLE CO., Ltd., and MILLER, L. W. March 2, 1942, No. 2762. [Class 37] A variable resistance suitable for volume control in radio reception on aircraft is made as small as possible and capable of withstanding extreme conditions of humidity and temperature. The case consists of a metal body 1 having a bearing bush 2 for the operating spindle 3 sealed in the bottom and a lid 5 of moulded insulating material having on the inside a segmental resistance strip 6 encircling an inner contact 7 and on the outside terminal tags 8, 9 connected to the ends of the strip 6 and a third terminal tag (not shown) connected to the contact 7. The body 1 and lid 5 are sealed by a ribbon of thermoplastic or other jointing material in a groove 12 which is melted, after assembly, to form a hermetic seal between the lid and the body. The lid is further secured in position by bending tags 13 on the body over the top of the lid. The terminals are stamped out of sheet metal and formed into bucket-like pieces 14 with upstanding flexible tags. They are mounted at the base in sockets in a box 16 on the lid 5 and secured by rivets passing through the lid. The bearing bush 2 is sealed into the bottom of the body 1 by moulded synthetic plastic material 21 which is formed with an annular channel 22 to accommodate the rim 23 of the lid with the interposition of a film of jointing material. A recess is formed in the layer 21 to engage a projection 25 in the lid to ensure correct angular relationship between the body and the lid. This projection may also serve as a stop to limit the travel in both directions of a rotor head 4 carried by the spindle 3. The sliding contact comprises a spring strip 27 pivoted in the rotor head so that one end bears on the resistance strip 6 and the other bears on the contact disc 7, The strip 27 is shaped as shown with projections 28 engaging recesses in walls 41 projecting from the rotor head 4. The head 4 carries a boss 29 which passes through the central aperture of the contact 27 and abuts against the centre of the contact 7 to serve as a spacer. The bottom of the rotor head 4 has a short boss 30 surrounding the top of the spindle to bear normally on the top of the bush 2 when the rotor contacts are bearing with the desired spring pressure on the contacts in the lid. An insert 31 may be moulded into the head 4 and formed with a central hole into which the reduced and splined end 32 of the spindle 3 may be forced and held frictionally so as to enable a standard rotor head to be employed with different spindles.
Patent GB-398718-A (GB)
Title: Improvements in and relating to stocking protectors
IPC: A43B23/28
Filed: 1933-01-28
Abstract: 398,718. Stocking protectors. LAURER, G., 19, Merkelsgasse, Nuremberg, Germany. Jan. 28, 1933, No. 2791. [Class 17 (ii).] A device for protecting stockings for wear inside shoes comprises toe and heel caps a, c which cover most of the sole of the stocking connected by elastic means e extending across the small bridge between them under the arch of the foot. The upper edge b of the heel cap slopes downwards steeply towards the middle of the device. Additional elastic connecting means may extend at the sides between the toe and heel caps. Specification 327,745, [Class 17 (ii), Boots and shoes, Construction of], is referred to.