baber/WOPTO huggingface dataset:
Patent GB-683262-A (GB)
Title: Process for the recovery of dinitrile solvents
IPC: C10G21/20
Filed: 1951-02-09
Abstract: Solvents of the formula <FORM:0683262/IV (b)/1> wherein X is NR (R being hydrogen or alkyl) or oxygen or sulphur, and alk is an alkylene radical of not more than 6 carbon atoms, containing in solution water-insoluble materials are recovered by treating with a water-insoluble "hydrocarbon extractant" for the dissolved material which extractant is defined as being a hydrocarbon or substituted hydrocarbon having an iodine number below 50, a boiling point far removed from that of said dissolved material, and which does not form substantial amounts of azeotropes therewith, and separating the dissolved material from the extractant by fractional distillation. The dinitrile solvents may be used for extraction of aromatics from paraffins, monoalkyl phenols from polyalkyl, and N,N-dialkyl aniline and homologues from N-alkyl C-alkyl isomers.  The extractant for the solution is preferably a paraffin where aromatic hydrocarbons are the solute, for example n-heptane or a mixture of low-boiling paraffins for naphthalene, and decane or C9-C12 paraffins for benzene or toluene.  Other extractants are chlorparaffins of C5 or above, cycloparaffins, ethers, e.g. diamyl ether, and C12 or higher alcohols, e.g. lauryl alcohol.  The cyanoalkyl solvents include 2-cyanoethyl and 2- or 3-cyanopropyl derivatives.  Addition of hot water in small amounts improves the separation.  Batch or continuous counter-current extraction may be used.  The solution of the solute from the extraction column may be fed to a distillation column, the solute being recovered and the extractant recirculated to the extraction.  The solution in the dinitrile solvent may be mixed with hot water before feeding to the extraction column.  The solvent containing water leaves the column and is cooled and separated into water and solvent layers for recycling.  Examples describe the extraction of solutions of toluene, naphthalene, dodecyl phenol, 2,4-lutidine, tetralin, heptaldehyde, methyl hexyl ketone, pelargonic acid, butyl acetate and styrene in bis-(2-cyanoethyl) amine, ether or sulphide, bis-(N-cyanomethyl) N-methylamine or sulphide, a ,b 1-dicyanodiethyl ether or bis-(a -cyanopropyl) sulphide, the extractant being C10-C12 paraffins, n-heptane, paraffin naphtha, methyl cyclohexane, amyl chlorides, amyl ether, or lauryl alcohol, and temperatures ranging up to 75 DEG  C.  Specification 677,218 is referred to.
Patent GB-338446-A (GB)
Title: Improvements in freight handling trucks
IPC: B60P1/02
Filed: 1930-01-31
Abstract: 338,446. Kellett, W. P. Feb. 4, 1929, [Convention date]. Vehicles with removable bodies.-In vehicles having a platform superstructure which can be raised or lowered either parallel with or at an angle to the truck to facilitate loading and unloading of containers the platform is raised or lowered by threaded shafts which are selectively operated to raise or lower the ends of the platform. As shown the vehicle comprises a chassis 3 having a pair of road wheels and a coupling device 6 for a tractor, a small pair of wheels 5 being provided to support the vehicle when at rest. Mounted on the chassis are pairs of toggle links 10, 11 and 22 having sleeves adapted to embrace right and left handed screw shafts 7, 20. The toggles are provided with rollers 14 adapted to run in channels 13 on a superposed platform or frame 12. Cross frames 15, 24 for rigidity are pivoted to the frame 12 or the spindle of the rollers 14 and to slides on the chassis. The screw shafts 7, 20 have extensions 27, 28 which may be driven concurrently or selectively by cross shafts 32, 33 from a change gear box in train with the engine unit. The frame 12 is provided with grooves or channels 40 for the runners of the containers. Pivoted hooks 39 are provided on the platform 12 adapted to engage under an adjacent rigid truck or platform and so place the chassis springs in tension.
Patent GB-1502406-A (GB)
Title: Weapon control system
IPC: F41G5/08
Filed: 1976-01-28
Abstract: 1502406 Weapon Control System HOLLANDSE SIGNAALAPPARATEN BV 28 Jan 1976 [20 Feb 1975] 3353/76 Heading G3N In a weapon control system comprising target tracking means to measure the range and angular coordinates of a target being tracked, a computer to establish from the coordinates the lead angle (i.e. the angular difference between the instantaneous and impact positions of the target) varying with the target position and velocity, and a firing device which can be brought and held in the direction of the aiming point determined from the lead angle, the target tracking means is rigidly connected to the firing device and switching means are incorporated to drive servo loops with the aid of error voltages in two phases: (1) the firing device and the target tracking means are directed at the target, whereby the error voltages are dependent on the angular difference between the orientation of the target tracking means and the target position, then (2) the firing device and the target tracking means are directed at the aiming point, whereby the error voltages are dependent on the calculated changes in the lead angle. Thus the target tracking means and the firing device use the same servo loops. The target tracking means may comprise a TV angle tracking unit and a laser to measure the range of the target, both mounted on the firing device. In phase (1) the computer determines the lead angle from the angular coordinates and, after centring of the unit on the target (by means of a "tracking window" superimposed on the TV), from the laser range measurements, and in phase (2) the computer determines the lead angle changes from the angular coordinates and range values extrapolated from target motion in phase (1). The target may be tracked in angular coordinates in phase (2) as well as in phase (1).
Patent GB-120834-A (GB)
Title: Improved Apparatus for Feeding Livestock.
Inventor: ATTERBURY JOHN ERNEST
IPC: A23N17/02
Filed: 1918-02-26
Abstract: 120,834. Atterbury, J. E. Feb. 26, 1918. Cutting vegetables &c.-A machine for cutting vegetables and feeding them to troughs o comprises a vehicle carrying an elevator g, a vegetable-cutter a, and a delivery conveyer d. The elevator g, which is carried at its upper end by pivoted links e and at its lower end by a lever j<1> adjustable by a handle j<2>, is adapted to extend over the hedge or fence h of the field containing the animals and to have the vegetables supplied to it from heaps arranged outside. Rotary brushes k<1>, k<2> clean the vegetables before they reach the elevator. The cleaned vegetables are carried to the hopper of the cutter a, where they are cut and then delivered to a conveyer d of either the endless-band or the jigging type. This conveyer carries them to a shoot n, whence they pass to the troughs o. The vehicle may be horse-drawn, the cutter, conveyer, and elevator being driven from the wheels; or a motor may be arranged to propel the vehicle and to drive the machinery, or to drive the machinery alone. The base on which the cutter, elevator, and conveyer are mounted may be arranged to swivel on the vehicle.
Patent GB-1055671-A (GB)
Title: Process for the production of polymeric or copolymerie acrylonitrile fibres of improved appearance
IPC: C08K5/35
Filed: 1965-01-26
Abstract: Acrylonitrile polymers or copolymers or polymer blends thereof have incorporated therein, before spinning into fibres, an oxacyanine brightener of the formula <FORM:1055671/C3/1> wherein R1 and R11 each represent an alkyl group having up to 5 carbon atoms, R1 and R2 each represent an unsubstituted or nonionogenically substituted (i.e. free of acid or basic groups) straight chain alkyl group having up to 5 carbon atoms and X-represents an anion which does not affect the optical properties of the oxacyanine cation.  Nonionogenic substituents in the groups R1 and R2 include cyano and halo substituents. Xmay be, for example, an anion derived from hydrochloric, hydrobomic, sulphuric, p-toluene - sulphonic, p - chlorobenzene - sulphonic or benzene-sulphonic acid.  The brightener is advantageously dissolved in the monomer(s) before polymerization but may also be dissolved together with the polymer in a solvent in the preparation of spinning solutions (dry or wet process).  The acrylonitrile may be copolymerized with, for example, vinyl pyridine, vinyl acetate, vinyl chloride, N-vinyl carbazole, vinylidene chloride, acrylic acid esters or styrene.  In Examples 1-11 the brightener and polymer are dissolved in dimethyl-formamide, dimethyl acetamide, ethylene carbonate or tetrahydrofuran, and in Example 12, the brightener is dissolved in acrylonitrile which is then polymerized in the presence of polyethyl methacrylate in an aqueous sodium thiocyanate solution using azobis-isobutyronitrile as initiator.
Patent GB-240059-A (GB)
Title: Improvements in or relating to the manufacture of boots and shoes
IPC: A43B7/12
Filed: 1925-02-06
Abstract: 240,059. Lotus, Ltd., and Brough, R. Feb. 6, 1925. Connecting uppers to insoles and soles.-In the manufacture of boots and shoes having an insole and a crepe rubber outsole enclosed by a band, the band is made of rubber or similar material, the inner edge being secured by sewing and the outer portion cemented so as to lie flush with the edge or to extend beneath the bottom surface of the sole. In the case of a boot or shoe, Fig. 1, having a layer E of the material known under the registered Trade Mark " Fibrok," the band F has its upper edge sewn in round a bottom filling C so as to surround the laver of " Fibrok." A crepe sole D is then fixed in position and the rubber band turned down and cemented to its edge. In some cases, a middle sole of leather or other suitable material may replace the " Fibrok " layer. In a turn shoe, Fig. 4, the band F is inserted between the lower edge of the upper A and an insole B and is extended under the crepe sole D. Reference has been directed by the Comp troller to Specification 240,187.
Patent GB-739092-A (GB)
Title: Improvements in or relating to magnetron valves
Inventor: VAUGHAN JAMES RODNEY MITCHELL
IPC: H01J23/05
Filed: 1953-02-07
Abstract: 739,092. Magnetrons. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 2, 1954 [Feb. 7, 1953], No. 3517/53. Class 39 (1). The helical cathode heater 9 is fed with D.C. of such polarity that the forces on it generated by the non-uniformity of the magnetic field, which usually has a slight minimum on the axis due to the apertures 5, 6 in the polepieces, tend to stabilize the heater in the axial position.
Patent GB-162798-A (GB)
Title: Improvements in micrometer gauges
IPC: G01B3/22
Filed: 1920-02-05
Abstract: 162,798. Gowlland, W. Feb. 5, 1920. L i n e a r - dimension gauges. - An indicatordial gauging-member b<1> having a movable contact b<2>, as described in Specification 130,460 for example, is provided with a detachable beam a having a fixed or adjustable anvil a<2> of large area, so that the combined arrangement may be used as a calliper gauge. The beam may be adjustable w i t h respect to a lug b projecting from the back of the dial casing by means of a slot in a flange a<4> of the beam and a bolt b*. The beam may be shaped so that its lower part is in the central plane of the dial, or the anvil may bedisplaced laterally. The beam may be provided with an apertured lug by which the gauge may be mounted on a stand.
Patent GB-825934-A (GB)
Title: Improvements in or relating to the separation of the isotopes of hydrogen
Inventor: GLUECKAUF EUGEN
IPC: C01B4/00
Filed: 1956-02-04
Abstract: The isotopes of hydrogen are separated by contacting gaseous hydrogen with an adsorbent comprising a metal forming a hydride and subsequently desorbing said hydrogen from said adsorbent by a process of chromatography.  The invention may be applied to the separation of hydrogen from deuterium or tritium or of deuterium from tritium. Examples refer to the treatment of an equilibrium mixture of hydrogen, deuterium and hydrogen deuteride by passage through a tube filled with a palladium adsorbent supported on asbestos.  After passage of the isotopic mixture, either pure hydrogen may be passed in or the tube may be gradually heated to 200 DEG  C. to expel the adsorbed deuterium followed by hydrogen.  It is stated that in general the isotope of a gaseous substance including in its molecule more than one atom of an element to be separated isotopically may be separated by contacting with an adsorbent selective for one of said forms, which also catalyses the conversion of molecules including more than one isotope of said element to molecules including only one isotope of said element.
Patent GB-573566-A (GB)
Title: Improvements in or relating to gas turbine installations operating on gaseous fuels
Filed: 1942-03-18
Abstract: 573,566. Gas turbines. SOC. RATEAU. March 18, 1942, No. 3613. Convention date, March 29, 1941. [Class 110 (iii)] Regulation of the quality of the gas supply to a combustion chamber Ch is effected by dilution with a gas of lower calorific value or air, or by adding a richer gas such as cokefurnace gas, acetylene, coal gas or the like. Fig. 1 shows a useful output turbine Tm and an auxiliary turbine Ta driving an air compressor C and a gas compressor G. A main gas supply conduit c and a second gas supply c<1> are controlled by simultaneously operating valves O, O<1>. Instead of the valves, two fans driven by motors whose speeds may be varied, may be used. One valve, or the speed of one fan, may be regulated. The compressors C. G, may be on separate shafts, and G may be driven by a separate turbine, whose speed may be varied. In this case, valves O, O<1> or fans are unnecessary. The gas compressor G may be driven by an electric motor supplied with current by a generator driven by the turbine Tm under rheostat control. Fig. 5 shows another arrangement in which the second gas is compressed in series by a fan V and a compressor G driven as shown, or otherwise. The motor M is supplied with current by a generator K. In a modified plant, the fan V and the compressor G supply separate nozzles in a common combustion chamber Ch.
Patent GB-144582-A (GB)
Title: Improvements in the construction of ships, barges and the like
IPC: B63B3/56
Filed: 1920-02-06
Abstract: 144,582. Smith, L. E., and Cameron, H. R. Feb. 6, 1920. Addition to 121,061. Hulls; skins; bulkheads.-A ship or barge is provided with a skin or shell and bulkheads constructed from plates which are of semi-circular or similar curved cross-section; the plates are riveted together edge to edge with the concave sides of the plates inside as regards the shell, and facing in one direction as regards the bulkhead sections. At the intersection of the bulkheads, and the bulkheads and shell, the plates are curved to about 270 degrees, as shown.
Patent GB-524705-A (GB)
Title: Improvements in or relating to moving contact electric current converters
IPC: H02M1/26
Filed: 1939-02-03
Abstract: 524,705. Control of D.C. motors. SIEMENSSCHUCKERTWERKE AKT.-GES. Feb. 3, 1939, No. 3702. Convention date, Feb. 3, 1938. Addition to 492,369. [Class 38 (iii)] [Also in Group XXXVI Varying E.M.F., regenerative braking; reversing.-A commutator switching arrangement as described in the parent Specification in which switching chokes R1, R2, R3, are provided in series with, and impedances N1, N2, N3, in parallel with the main contacts Kl, K2 K3, is adapted for supplying current in either direction to a motor A from an A.C. source, and also for operation as an inverter, by the provision of a phase-shifting transformer DT in the supply to the motor SM driving the commutator switch, by means of which the phase position of the drive for the main contacts K1 K2, K3, may be adjusted through 360 degrees. Thus the motor may be operated in either direction and is controlled for regeneration. By providing the switching chokes with D.C. polarization, the maximum output in one direction of rectifier operation may be made greater than in the other, so that in one direction the motor operates at higher speed than in the other.
Patent GB-1100858-A (GB)
Title: Improvements in or relating to the treatment of scrap copper
Inventor: HOLDEN HAROLD
IPC: C23G5/00
Filed: 1966-01-27
Abstract: Solid brittle inorganic compounds are removed from scrap copper or copper-alloy wire or insulated cable (consisting of one or more conductors embedded in mineral powder, e.g. magnesium oxide, and enclosed in a copper sheath) by chopping the wire or cable into sufficiently short lengths to dissociate the inorganic compounds from the copper and mechanically separating the chopped copper from the dust formed from the inorganic compounds.  The chopped lengths preferably do not exceed three times the diameter of the wire or conductor.  The process may be effected in a chopping or granulating machine fitted with a dust extractor.  The chopped copper may finally be furnace-refined.
Patent GB-105084-A (GB)
Title: Improvements in or relating to Pneumatic Atomizing Apparatus.
Inventor: ZAWELS EDUARDO
IPC: B05B9/08
Filed: 1916-03-14
Abstract: 105,084. Zawels, E., and Zawels, E. A. March 14, 1916. Lift valves. - The outlet of an atomizer is regulated by a lift valve 29 held closed by a spring 20 and opened by means of a lever 28 which carries a pin 27 engaging a plate 21 on the valve spindle.
Patent GB-372397-A (GB)
Title: Improvements in or relating to roll film cameras and a method of manipulating films therein
IPC: G03B19/04
Filed: 1931-02-07
Abstract: 372,397. Photographic roll-film cameras. KODAK, Ltd. and CASE, C. Z., Kodak House, Kingsway, London. Feb. 7, 1931, No. 3899. [Class 98 (i).] A roll-film camera comprises a spool chamber and a film receiving chamber disposed on either side of the exposure chamber, the film being fed from the spool chamber across the exposure chamber to the receiving chamber solely by rotation of the spool. In the form shown the spool chamber comprises a cylindrical casing the edges of the casing 12, 13 overlapping to form a curved passage for the film. A spring-pressed roller 17 is mounted in the wall of the casing to bear on the film which is thus fed by rotation of the spool across the exposure plane 6 into the film receiving chamber 5 and subsequently wound back into the spool chamber, exposures being made en route. In another form a removable carton similar to the spool chamber above described may be used, the camera body being so shaped that the carton can only be inserted in one position in the spool chamber. In either case, instead of rewinding the film on to the spool after exposure, the film may be provided with an insensitive strip at the inner end and the receiving chamber made removable from the camera. The spool 118, Fig. 5, comprises a hub having a slot 119 for threading the film and a knurled head 125 mounted on the spindle for rotating the spool. The head bears a flange 124, fitting into an opening in the side of the spool chamber and may be held in place by a pin on the camera working in a groove on the head. One or more pins 122 may be mounted on the spool to assist in the feed of the film. The Provisional Specification also describes a camera of moulded material having a housing for the view-finder formed therein. The lens may be fitted in a focusing mount or the usual bellows provided.
Patent GB-575190-A (GB)
Title: Improvements in roller tool boxes or roller bearing steadying devices for use on lathes
IPC: B23B29/16
Filed: 1944-03-02
Abstract: 575,190. Turning. BRANNAN, A. J. March 2, 1944, No. 3909. [Class 83 (iii)] A roller tool box comprises steady rollers 6 and 7 mounted at the ends of arms 10, 11 individually pivoted about spaced axes to the box body part and adapted to be pressed firmly against the front face of the box 2 by means of tightening studs 12 and 13 by set-screws 15 carried by lugs 16 integral with the body of the box for supporting the arms to maintain the rollers pressed against the work 4 and an angularly adjustable holder for a tool 5 urged against the work by a screw 21. The rollers are mounted on the arms 10, 11 by means of screwed studs 8, 9 and to prevent the entry of particles into the bearings, the ends of the arms are enlarged as shown at 10a, 11a and annular washers 14 are placed under the heads of the studs 8, 9. The tool 5.passes through a slot in the head of a bolt 18 and is clamped on to a washer 19, resting on the front face of the box, by means of a nut abutting against the rear face of the box.
Patent GB-252059-A (GB)
Title: A device for holding sheets together
IPC: B42D17/00
Filed: 1925-02-12
Abstract: 252,059. Donaldson, J. G. Feb. 12, 1925. Clips, ftexible-jaw.-A clip for holding sheets of paper, music, &c. comprises a rigid number 1 and a spring member 2 connected to or forming part of the rigid member and having a projection 2a adapted to pass through the sheets 6 to be held, and through a slot 1<a> in the rigid member, and a slot 1<b> in a spring-actuated locking member 3, which moves upwardly to engage the projection 2a. The locking member 3 is released by depressing the knob 3<a>. According to the Provisional Specification, the device is adapted to be passed over two sides of the folded sheets of a newspaper &c., and instead of a piercing projection means are provided on the rigid member for temporarily locking the normally free end of the spring member close to the rigid member.
Patent GB-159139-A (GB)
Title: Improvements in means for the control of aircraft
IPC: B64C3/54
Filed: 1921-02-02
Abstract: 159,139. Pardo y Cosio, M. Feb. 21, 1920, [Convention datel. Addition to 155,844. Steering and balancing; planes, construction of. -Comprises detail improvements in the apparatus described in the parent Specification for adjusting sliding sections on the wings and tailplane of a biplane. The sliding tail-section 29, instead of being attached to the elevator 28, is arranged forward of the tail-plane 30, and is operated by a cable passing over a pulley 45 on the shaft 5 which is actuated from the hand-wheel 1. The wind-guard 15 arranged to cover the sliding wing section 12 in its inner position is fixed to the front spar of the wing.