baber/WOPTO huggingface dataset:
Patent GB-740990-A (GB)
Title: Manufacture of new carbamic acid esters
IPC: C07C271/06
Filed: 1953-02-23
Abstract: The invention comprises carbamic acid esters of the formula <FORM:0740990/IV(a)/1> in which R1 and R2 each represent a monovalent aliphatic or cycloaliphatic hydrocarbon radical or together represent a divalent aliphatic hydrocarbon radical, and R3 represents an aliphatic hydrocarbon radical.  Such compounds are obtained by reacting an isocyanate of the formula R3-NCO with the appropriate carbinol.  The isocyanate may be formed in the course of the reaction.  Mentioned for R1 and R2 are methyl, ethyl, propyl, butyl, isobutyl, pentyl, hexyl, heptyl, cyclopropyl, cyclopentyl, cyclohexyl, butylene-(1:4), pentylene-(1:5) and hexylene-(1:6) radicals and R3 may be an alkyl radical of 1 to 4 carbon atoms.  In examples the corresponding carbamates are prepared by reacting (1 to 7) methyl isocyanate with (1) ethynyl - n - pentyl - methyl carbinol; (2) ethynyl - isobutyl - methyl - carbinol; (3) ethynyl diisopropyl-carbinol; (4) ethynyl-di-n-propyl - carbinol; (5) ethynyl - ethyl - methyl - carbinol; (6) ethynyl-diethyl-carbinol; (7) 1-ethynyl-cyclohexanol; (8 to 10) ethyl isocyanate with (8) ethynyl-methyl-ethyl-carbinol; (9) ethynyl-amyl-methyl-carbinol; (10) 1 - ethynyl - cyclohexanol; (11) allyl isocyanate with amyl-methyl-ethynyl-carbinol; (12) n-propyl isocyanate with methyl-ethyl-ethynyl-carbinol; (13) isopropyl isocyanate with methyl-ethyl-ethynyl-carbinol; (14) isopropyl isocyanate with amyl-methyl-ethynyl-carbinol; (15) n-butyl isocyanate with methyl-ethyl-ethynyl-carbinol; (16) n-butyl isocyanate with 1-ethynyl cyclohexanol; (17 to 19) isobutyl isocyanate with (17) methyl-ethyl-ethynyl-carbinol, (18) amyl-methyl-ethynyl-carbinol, (19) 1 - ethynyl - cyclohexanol; (21) methyl isocyanate with ethynyl - dimethyl - carbinol; (22) ethyl isocyanate with ethynyl-dimethyl-carbinol; (24) methyl isocyanate with ethynyl-methyl-cyclopropyl-carbinol.  In example (20) 1 - ethynyl - cycloheptanol, 1-ethynyl-cycloheptanol and methyl isocyanate are reacted to give the corresponding methyl carbamate.  In further examples (23) ethynyl-methyl-ethyl-carbinol is heated at 40 DEG  to 80 DEG  C. with the reaction product of sodium azide activated with hydrazine and acetyl chloride.  The acetyl azide present decomposes to give methyl isocyanate which reacts with the carbinol to form the N-methyl carbamate of the carbinol; (24) ethynyl - methyl - cyclopropyl - carbinol and methyl isocyanate are reacted to give the corresponding ester; (25) acetyl azide and 1-ethynyl-cyclopentanol are reacted in the presence of triethylamine to the N-methyl-carbamate of 1 - ethynyl - cyclopentanol - (1); (26) the N-methyl carbamate of ethynyl-methyl-cyclohexyl carbinol is prepared by reacting the corresponding carbinol with acetyl azide in the presence of triethylamine.  1-Ethynyl-cycloheptanol is prepared by dropping cycloheptanone into a solution of an equivalent of sodium acetylide in liquid ammonia, while acetylene is passed through the mixture.
Patent GB-188605-A (GB)
Title: Improvements in sound, flash and smoke dampers for fire arms
IPC: F41A21/30
Filed: 1922-02-21
Abstract: 188,605. Wildner, F. Feb. 21, 1922. Machine guns; sound of discharge, modifying; flash of discharge, obscuring.-A muzzle attachment for reducing sound, flash and smoke comprises a perforated shell a enclosing one or more concentrically arranged tubular sieves g of perforated plate or wire gauze, the forward ends of the shell and sieves being closed by discs o of flexible material which, after being pierced by the projectile, close to trap the following gases. The forward ends of the tubes a, g are separated by a spring k which serves to hold the inner tube in place. The flexible discs, which are readily renewable, are preferably built up of a thick wad o of felt or asbestos backed by a thin disc n of cardboard.
Patent GB-733618-A (GB)
Title: Improvements in or relating to presses or stamping machines
IPC: B30B1/26
Filed: 1952-02-26
Abstract: 733,618. Momentum power-storage apparatus. SCHULER AKT.-GES., L. Feb. 26, 1952 [April 2, 1951], No. 5067/52. Class 10. [Also in Groups V and XXII] The drive of a stamping machine or press includes, in order, in the direction of transmission, a prime mover, a fly-wheel mass and an infinitely variable speed-regulating means, the arrangement being such that the full torque is preserved even at low speeds. A multi-phase electric motor 13 running at constant speed is coupled through a fly-wheel 18 to a D.C. generator 14 which is externally excited by means of an exciter machine 15 on the same shaft. The D.C. generator supplies the reversible press motor 7 which is also excited by the machine 15. A cam mounted on the driving shaft of the press controls the exciter current through a switch-box and thus automatically regulates the direction and speed of the drive. A further infinitely-variable gear and a mechanically-operated clutch may be included between the driving motor and the driving shaft of the press.
Patent GB-430447-A (GB)
Title: Improvements in or relating to counting apparatus
IPC: G06M1/14
Filed: 1934-02-16
Abstract: 430,447. Counting-apparatus. STOKES, R., Credenda Works, Bishop Street, Wolverhampton. Feb. 16, 1934, No. 5130. [Class 106 (i)] In a counting mechanism the counting-wheel spindles carry ratchet wheels which co-operate with spring controlled detent pawls arranged to slide in guides. The pawls are inserted from the outer ends of the guides to project from the inner ends and are non - rotatably mounted therein. In the form shown in Figs. 1 and 2, a casing 1 is formed with recessed bosses 4 to form bearings for one end of the spindles 5 of the counting discs the other ends being journalled in a detachable front plate. The spindles 5 carry ratchet toothed wheels 7 with each of which co-operates a pawl comprising a shouldered pin 12, Fig. 4, with a flat-sided nose 12<a> mounted in a cylindrical hole 9 drilled through a boss 8 formed on the casing. A spiral spring 13 surrounds the pin 12 and is held up to the shoulder by a collar 11 screwed into the hole 9. The nose 12<a> extends up through a slot in the top of the boss. For counting the operations of a press or other machine the units wheel is driven by a pawl 20 mounted on the upper extension of a spring-controlled operating lever 15. As shown, the ratchet wheels are mounted in staggered relation and the pawls are situated accordingly. By arranging the counter-wheel spindles at an incline the pawls may be arranged in a row.
Patent GB-234550-A (GB)
Title: Improvements in and connected with splash guards for the wheels of road vehicles
IPC: B60B7/00
Filed: 1924-02-28
Abstract: 234,550. Mitchell, W. A., and Ross, R. C. Feb. 28, 1924. Mud-guards rotating with wheels. - Stop devices to prevent excessive nipping of a splash guard when the clamping means encounter a kerb or the like, comprise spaced studs e<1>, Fig. 3, on the clamping ring e which attaches the guard d to the wheel rim b, fitting but not normally passing right through holes d<1> in the guard d. Under excessive lateral pressure the studs e<1> engage the rim b laterally and prevent excessive nipping of the guard d. Should the ring e tend to mount the kerb, spaced inturned claws e<2>, Fig. 4, at the periphery of the clamping ring e, fitting slots in the inner portion of the guard d, are pressed against the rim and prevent damage to the ring e and peripheral nipping of the guard.
Patent GB-1349322-A (GB)
Title: Projectile-mountable rotor
Inventor: JUILLET P J F
IPC: G01C19/02
Filed: 1972-02-03
Abstract: 1349322 Gyroscopes FRANCE ARMED FORCES MINISTER OF 3 Feb 1972 [3 March 1971] 5149/72 Heading G1C A rotor drive arrangement in a gyroscope comprises a spring 4 coiled around and located within a peripheral groove 2 in the rotor 1, one end of the spring 4 being attached at 3 to the rotor and the other end to a fixture so that upon movement of the rotor away from the fixture the rotor is set into spinning motion. The gyroscope may be mounted in a projectile and the fixture may form part of a launching device. The spring 4 is preformed to have a coil diameter less than the diameter of the groove 2 so as to sit firmly in the groove and provide adequate caging of the rotor up to the launching of the projectile.
Patent GB-1463231-A (GB)
Title: Apparatus for regeneration of filters for antidust respirators
IPC: B01D46/52
Filed: 1975-02-06
Abstract: 1463231 Bellows pumps VSES N I INST GORNOSPASATEL DELA 6 Feb 1975 5155/75 Heading F1N [Also in Divisions B1/2] Apparatus for cleaning a respiratory dust filter comprises a pair of concentric bellows 5, 6, connected by fixed lower wall 7 and vertically movable upper wall 8, which carries an adapter 24 and cover 23 between which is clamped the filter to be cleaned (not shown) with its dusty side down, and a solenoid 32 which is repeatedly activated (e.g. at 10-15 cycles/sec) to pump air through the filter and shake it, expelling the dust through the interior of the inner bellows to outlet 18. Each downstroke of the armature 33 compresses bellows 5, 6 via links 34-41, adapter 24 and wall 8, forcing air from space A between the bellows through valve or valves 31 into the cover 23 and thence down through the filter to outlet 18 and finally causing wall 8 to strike stop 42. De-activation of the solenoid allows spring 43 to lift wall 8, expanding the bellows to draw air into space A via valve 10 and inlet 14, expansion of the inner bellows 5 and non-return outlet valve 17 simultaneously creating suction within bellows 5 so that air still flows down through the filter. To test the filter after cleaning, the frequency of current supplied to the solenoid is doubled, which considerably reduces the stroke and the volumetric flowrate created by the bellows pump, to a rate similar to that of the human lungs. A differential pressure gauge 44, connected to adapter 24 and cover 23 above and below the filter, indicates the pressure drop across the filter. The clean filter may then be fitted into a respirator and the respirator similarly checked by pressing it against an adapter 15 on inlet pipe 14 and measuring the pressure difference across it with differential pressure gauge 45. Cover 23 and adapter 24 have cruciform ribs, mutually staggered, to support the filter, Figs. 2-4 (not shown). The apparatus in Fig. 5 (not shown) has an external flexible pipe (46) connecting space A with cover 23 in place of valve(s) 31.
Patent GB-608275-A (GB)
Title: Improvements relating to enclosing means for electrical devices
IPC: G04C3/00
Filed: 1946-02-19
Abstract: 608,275. Dynamo-electric machine casings. FERRANTI, Ltd., and KERSHAW, T. Feb. 19, 1946, No. 5157. [Class 35] [Also in Groups XVIII and XXXVI]  In a drum-like case 1 for an electric device, e.g. a clock motor, a cut-away portion 2 accommodates a terminal block 10 fixed, together with a raised locating rim 12 to a base 13, and a non-conducting plate 5 which also has a flange 8 acting as a cable-grip is screwed to the block to hold the cover in position. Extensions 3, 4 of the cut-away portion accommodate, respectively, the plate and the junction between the locating rim and the terminal block.
Patent GB-1328053-A (GB)
Title: Removal of pyritic sulphur from coal using solutions containing ferric ions
IPC: C10L9/02
Filed: 1972-02-03
Abstract: 1328053 Iron chlorides and oxide from coal treatment TRW Inc 3 Feb 1972 [17 Feb 1971 19 July 1971] 5182/72 Heading C1A [Also in Division C5] Pyritic coal is treated with a ferric chloride solution to produce sulphur and ferrous chloride according to the equation The ferrous chloride is precipitated from solution by concentration and cooling and air oxidized in an oven to give ferric chloride and ferric oxide according to the equation
Patent GB-981288-A (GB)
Title: Alloy steels
Inventor: ROBERTS GEORGE ADAM
IPC: C22C38/24
Filed: 1961-02-13
Abstract: A process for producing an alloy steel comprises analysing the essentially martensitic matrix of a hardened high speed steel having a room temperature hardness of at least 60 Rc, a hardness of at least 45 Rc at 1000  DEG F. and containing more than 5% undissolved excess carbides, making an alloy of the composition of said matrix and hardening the alloy at a temperature such that less than 5% excess undissolved carbides are formed.  The parent steel preferably has a total W+Cr+V+Mo of at least 14% and the product may have a minimum of 4.8% for this sum.  The hardening temperature is preferably at least 1800  DEG F. Suitable product steels may comprise: .C.0.15-0.85% .Cr.3.4-5.6% .V.0.65-2.4% .W + Mo.4 -9.6% .Co.0 -5.6% .Si.up to 1% .Mn.up to 1% the remainder, apart from impurities, being iron
Patent GB-481045-A (GB)
Title: Method of producing yeast, especially compressed yeast, and spirit
IPC: C12N1/18
Filed: 1937-02-22
Abstract: Yeast and alcohol are produced by a fermentation process carried out in at least two vats or groups, yeast being exchanged between the vats or groups during the fermentations, the corresponding quantity of wort remaining behind in the respective vats.  At least one of the fermentations is such as to produce alcohol, although the others may be for yeast only.  The conditions of fermentation of the separate groups may differ in temperature, time of initiation or conclusion, amounts of seed yeast, aeration, &c.  In an example a molasses fermentation producing no alcohol is started in a vat and two hours later a molasses fermentation producing alcohol as well as yeast is started in another vat.  Exchange of yeast takes place until the alcohol fermentation has been proceeding for 7 hours, when all the yeast from this fermentation is transferred to the no-alcohol fermentation which proceeds for another 5 hours, a corresponding amount of yeast being removed from the no-alcohol fermentation as a final product.
Patent GB-664448-A (GB)
Title: Improvements in or relating to the oxidation of waxes
Filed: 1949-02-25
Abstract: Waxes consisting predominantly of hydrocarbons are treated with a gas containing free oxygen at elevated temperature in presence of a manganese oxide.  An alkali is preferably present and the temperature range is preferably 100-170 DEG  C.  Suitable waxes are obtainable from petroleum or shale oil or by the Fischer-Tropsch process or by dewaxing a solvent-extracted lubricating oil fraction.  The products may be used to make soaps, surface-active agents, greases, and bitumen emulsifiers.  In an example, a paraffin wax is blown with air in an aluminium reactor at 120 DEG  C. in presence of manganese dioxide and aqueous caustic soda.
Patent GB-1482754-A (GB)
Title: Lasers
IPC: H01S3/11
Filed: 1974-02-06
Abstract: 1482754 Holography EMI Ltd 13 Sept 1974 [6 Feb 1974] 05376/74 Heading G2J [Also in Division H1] An optically pumped solid state laser includes a mode selector, Fig. 3, which selects a multiple lobe transverse propagation mode, Fig. 1, while . suppressing the fundamental mode(s) and ensures that the multiple lobe mode remains substantially in the same location in a plane normal to the optic axis 12 of the laser.  The central, concentric fundamental mode(s) are suppressed by the lines 8 engraved, etched, or evaporated on to an optically flat disc 4. The radial lines 7 are arranged to coincide with intensity minima of the multiple lobe mode, thereby preventing its rotation. In this way a relatively large diameter laser beam having coherence sufficient for holography is obtained. The lines, 7, 8 may be marked on the resonator mirror 1. For holographic purposes reference and object beams are derived by a beam-splitter 9, Fig. 6 which is a glass disc having a diffusing surface 16 and a polished one 17. A coated 34 degrees reflecting sector 18 produces the reference beam, the transmitted light, scattered by surface 16, constituting the object beam.
Patent GB-379229-A (GB)
Title: Improvements in method and apparatus for making hollow glass articles
IPC: C03B9/24
Filed: 1932-02-23
Abstract: 379,229. Glassware manufacture. OWENS-ILLINOIS GLASS CO., Nicholas Building, Toledo, Ohio, U.S.A. Feb. 23, 1932, No. 5377. Convention date, Oct. 26, 1931. [Class 56.] A method of forming a hollow glass article comprises forming a parison by introducing separate streams of glass simultaneously through separate openings into a mould cavity and causing said streams to merge and fill the cavity. The invention is described with reference to a suction-gathering machine of the Owens type having a rotary carriage with dipping frames carrying parison moulds to which air and vacuum can be supplied. Each parison mould 13 comprises separable sections each formed with a cavity 27, and having a lug 29 at the centre of the base. These lugs, in the closed position of the mould, form a bridge across the cavity, leaving openings 28. The upper surface 29<1> of the bridge is convex, while the ridge of this surface extending lengthwise of the bridge from one mould wall to the other is concave. In gathering, glass enters by both openings 28, the two streams merging to fill the mould. A shearing knife severs the charge and forms a mould closure while the initial blowing is performed. The suspended parison is supported by a mould bottom having a convex upper surface and is blown in a finishing mould.
Patent GB-557814-A (GB)
Title: Improvements in or relating to apparatus for testing the compression strength of large structures such as rail cars
IPC: G01M5/00
Filed: 1942-04-23
Abstract: 557,814. Testing rail cars. BUDD MANUFACTURING CO., E. G. April 23, 1942, No. 5490. Convention date, April 24, 1941. [Class 103 (iv) Structures such as rail cars are tested under compression by running them on to a platform adjustable for height and compressing them between the ends. The machine is housed in a building 10 with a doorway 12 at one end through which the rails 13 of the track extend. The apparatus comprises two spaced parallel supporting structures 14 each formed of spaced pillars 16 anchored to the foundation 11 and connected at the top by longitudinal I-beams 17 and suitable bracing. In addition, at each side, three pillars 19 anchored to the foundation are secured to the beam 17 which is cut at these points and secured to the pillars by gussets. The structures 14 are braced to spaced pillars 21 connected by a beam 22 carrying tracks 23 for a travelling crane 24. The compression machine comprises two spaced tension rods 29 interconnected at the ends by massive beams 30, 31. A hydraulic press 32 supported by a platform has a ram 36 in the plane of the rods 29 and midway between them. The rail car is located bet tween the ram 36 and the beam 31. To test at various levels, the platform 37 on which the car is supported is arranged to move vertically. In the lowered position, it is disposed in a well 42 beneath the floor level 11. At the location of each screw 43, the platform is provided with a bracket 46 having a collar 47 loosely surrounding the screw. This collar has a rounded face 48 resting in a corresponding face 49 formed in a guided nut 50 carried by the screw 43. All the screws 43 are rotated simultaneously through gearing from a central longitudinal shaft 58 driven from a motor 61. This main shaft 58 drives transverse shafts 55 through bevel gear and these in turn drive the screws through worm gear. The abutment 31 is mounted upon a wheeled casing on rails. Means are described for adjusting the position of the abutment beam 31 along the tension rods 29 to accommodate the machine to different lengths of work. The hydraulic press and the beam 31 are laterally adjustable to remove the line of thrust from a central location between the rods 29. The car may be placed in the lowered position and tested for its lateral compressive strength at any elevation for any portion of its length by inserting hydraulic jacks between the car body and the posts 16 while applying at the same time on the opposite side any suitable reaction member.
Patent GB-588781-A (GB)
Title: Improvements relating to swivel pipe joints
IPC: F16L27/08
Filed: 1945-03-06
Abstract: 588,781. Swivel pipe joints. GASKELL & CHAMBERS, Ltd., and WEPGHTMAN, J. S. March 6, 1945, Nos. 5580 and 32182. [Class 99 (i)] A swivel pipe joint Figs. 1, 2 has a pressure ring h, forming an abutment for the union nut m, formed with protruding keys k which engage the slots d in the socket member a and thus prevent slackening of the union nut when the pipe f is rotated relatively to the pipe b. The socket member a contains the seating c, of vulcanised fibre or other suitable material, on which seats the annular seat g of the plug member e. If required the pressure ring may be held in place by the spring ring i. In a modification the pressure ring may be of a non-circular section and fit in a socket member whose counter bore is of similar section.
Patent GB-808181-A (GB)
Title: Process for the production of azulenes substituted in the 4-and/or 8-position
IPC: C07C13/52
Filed: 1956-02-23
Abstract: Azulenes substituted in the 4- and/or 8- positions are prepared by reacting an azulene unsubstituted in the 4- and/or 8-position with an alkali metal alkyl, aryl or aralkyl or complex thereof with a metallo-hydrocarbon to form an addition compound which is either treated with a compound containing an active hydrogen atom such as alcohol or water to give a dihydroazulene which is dehydrogenated to the corresponding 4- and/or 8-alkyl, aryl or aralkyl azulene, or is transformed direct to the corresponding azulene by thermal decomposition or by steam distillation; in a modification the alkali metal compound is replaced by p-dimethylamino-phenyl lithium to give an azulene substituted in the 4- and/or 8-position by p-dimethylamino phenyl. The alkali metal compound may be used as a complex with an aluminium, zinc, beryllium, magnesium or boron alkyl. Decomposition of the addition compound can be carried out by treating with water or an alcohol to give a dihydroazulene which can be dehydrogenated with chloranil.  Alternative preferred procedures are heating the addition compound in vacuo, or steam distillation in the presence of a hydrogen acceptor is preferred. In an example: (1) azulene and lithium methyl in ether form a precipitate, the dietherate of the addition compound.  The intermediate is transformed to 4-methyl azulene by reacting with methanol followed by oxidation with chloranil, extracted with hexane and recovered by distillation.  The decomposition of the intermediate by steam distillation in a nitrogen atmosphere and thermal decomposition at 50-150 DEG  C. in vacuo are also described. Other examples describe the preparations of: (2) 4-butyl azulene from azulene and lithium butyl; (3) 4-phenyl azulene from azulene and sodium phenyl; (4) 4-phylisopropyl azulene from azulene and potassium phenyl isopropyl; (5) 4,8-diphenyl azulene from 4-phenyl azulene and lithium phenyl; (6) 4,8-dimethyl azulene from 4-methyl azulene and lithium methyl; (7) 4-phenyl-8-methyl azulene from 4-phenyl azulene and lithium methyl; (8) 4-ethyl azulene from azulene and sodium aluminium tetraethyl; (9) 4-phenyl azulene from azulene and boron lithium tetraphenyl; (10 4-methyl azulene from azulene and dilithium zinc tetramethyl; (11) 4-p-dimethylaminophenyl azulene from azulene and p-dimethylaminophenyl lithium; and (12) 4,8-di-p-dimethylaminophenyl azulene by further reaction with p-dimethylaminophenyl lithium.