baber/WOPTO huggingface dataset:
Patent GB-980124-A (GB)
Title: Polymers for the racemisation of optically active amino acids
IPC: C08G8/28
Filed: 1963-01-25
Abstract: Optically active amino acids are racemized by contacting aqueous solutions of the amino acids in the presence of metal ions with polymers comprising benzene nuclei and/or heterocyclic aromatic nuclei having aldehyde substituents therein and capable of forming chelates with the metal, the chelate bonds being formed between the aldehyde groups and suitable radicals in ortho positions to the aldehyde groups, or between the aldehyde groups and hetero atoms if heterocyclic aromatic nuclei are present (see Division C3).  The metals may be copper, cobalt, magnesium, zinc, nickel, aluminium, iron or zinc.  Radicals in the ortho positions to the aldehyde groups of the polymer may be hydroxyl, amino or carboxyl radicals. Preferably the racemization is carried out at above pH 8 and at above 80 DEG  C.  In examples, racemic mixtures are obtained from L-glutamic acid, L-alanine and L-aspartic acid. Other amino acids mentioned are lysine, valine, arginine, phenylalanine and methionine.ALSO:The invention comprises a polymer for use in the recemization of optically active amino acids, the polymer comprising benzene nuclei and/or heterocyclic aromatic nuclei having aldehyde substituents therein and capable of forming chelates with a metal, the chelate bonds being formed between the aldehyde groups and suitable radicals in ortho positions to the aldehyde groups, or between the aldehyde groups and hetero atoms if heterocyclic aromatic nuclei are present.  Radicals in the ortho position to the aldehyde group may be hydroxyl, amino or carboxyl radicals. Polymers, containing herocyclic nuclei may be derived from furfural.  The polymers may be obtained (a) by polymerizing or condensing a monomer containing the chelating groups while the aldehyde group is protected, e.g. by conversion to a benzalchloride group which is subsequently converted back to an aldehyde group; or (b) by introducing the groups into a ready-made polymer, e.g. by converting methyl substituents in an o-cresol-formaldehyde resin into aldehyde groups, or by converting the amino groups of an amino-substitutes polymer to diazo groups and azo coupling aromatic nuclei having the chelating groups.  In examples, polymers are prepared (1) from salicylaldehyde, resorcinol and formaldehyde, the aldehyde groups being protected by reaction with phosphorus pentachloride, (2) from an o-cresol-phenol-formaldehyde resin by oxidation of the methyl groups to aldehyde groups, (3) from a polyaminostyrene, e.g. which may be formed by nitration of the aromatic nuclei of polystrene and reducing the nitro group to amino by diazotization of the amino groups and azo coupling salicylaldehyde, (4) from p-aminobenzyl cellulose by diazotization and coupling with salicylaldehyde and (5) from a salicylic acid-phenol-formaldehyde resin by reaction with thionyl chloride, formation of anilides, conversion to chloroimides and reduction with stannous chloride.
Patent GB-1135192-A (GB)
Title: Improvements in or relating to bolts
Inventor: POTTS HARRY
IPC: E05B15/16
Filed: 1965-01-26
Abstract: 1,135,192. Bolt fastenings. HEYWOODHELLIWELL Ltd. 14 Feb., 1966 [26 Jan., 1965], No. 3305/65. Heading E2A. A bolt has a portion which in use extends .across an intersection between two members to be secured relatively to one another the portion comprising a sleeve 25 of hard material rotatably mounted on a rod 12. In the construction shown the sleeve 25 is enclosed by an outer sleeve 21 the bore of which is of larger diameter than the outer diameter of the hard sleeve 25 so as to leave an annular gap between the two sleeves. The sleeve 21 has a threaded bore in one end portion by which it is connected to a threaded portion of the rod 12. The threaded bore of the sleeve 21 provides a shoulder between it and the bore which surrounds the sleeve 25 to locate the sleeve 25 in one direction and there is a retaining ring engaged in a groove in the sleeve 21 and projecting radially inwardly to retain the sleeve 25 for movement in the other direction. The sleeve 25 can be made of hard metal, ceramic material or glass and the sleeve 21 can be made of a synthetic resin e.g. nylon.
Patent GB-469376-A (GB)
Title: Improvements relating to automatic electric circuit breakers
IPC: H01H73/30
Filed: 1937-02-04
Abstract: 469,376. Automatic circuit-breakers. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 4, 1937, No. 3332. Convention date, Feb. 4, 1936. [Class 38 (v)] A control device for a refrigerator comprises a bellows 14 adapted to rock a lever 16 pivoted at 17 and connected by a link 21 and tension spring 22 to a contact lever 23 pivoted at 24 to cause a rapid make-and-break of a circuit at 30, 31 to maintain the temperature of the refrigerator constant. A tripping member 49 pivoted at 24 is biassed anticlockwise by a spring 59 in compression between the tripping member and a knob 58 on a slide 53. The tripping member 49 is held in the inoperative position shown by a pin 47 on a link 46 passing through slide 53 and connected to a latch 44. The latch 44 is held by a bimetallic strip 43 carried by a lever 41 pivoted at 42 and connected to a bimetallic strip 37 having a heating winding (not shown) connected in the motor circuit. The bimetallic strip 43 merely corrects for ambient temperature changes of the strip 37. On overload, the strip 37 tilts lever 41 to release catch 44 which allows spring 59 to move the tripping member 49 to cause a projection 65 to move the contact arm 23 to the off position. At the same time slide 53 moves link 46 to the left causing pin 47 to move along slot 48 and thus reset latch 44 so as to be clear of strip 43 on cooling. The apparatus is reset by pushing knob 58 to the right, the pin 47 sliding up slot 48 and resetting tripping member 49. If the handle is held in the resetting position the circuit is still opened but the latch is not reset. The circuit can be opened by hand by pulling knob 58 and forcing pin 47 out of recess 61. Specification 363,121 is referred to.
Patent GB-671141-A (GB)
Title: Terephthalamide derivatives
IPC: C07C233/12
Filed: 1950-02-09
Abstract: Di- and tetra-esters of terephthalamide of the general formula <FORM:0671141/IV (a)/1> in which R is hydrogen or -C2H4-OOC-R11 and R1 is -OOC-R11, R11 being a lower alkyl group, may be used as plasticizers and coating agents for cellulosic films and sheets such as of regenerated cellulose, cellulose acetate and cellulose nitrate. The b -hydroxyethyl derivatives of the above general formula, where R is hydrogen or a hydroxyethyl group and R1 is a hydroxy group, may be condensed with dibasic acids to produce fibres and fibre-forming polymeric materials.ALSO:The invention comprises terephthalamides of the general formula <FORM:0671141/IV (b)/1> where R is hydrogen, hydroxyethyl or -C2H4.OOC.R11 and R1 is hydroxyl or -OOC.R11, in which R11 is a lower alkyl group; and their preparation by heating a mixture of a terephthalic acid ester and mono-or di-ethanolamine in ethyl alcohol, and if desired esterifying the N,N1-bis (or tetra)-(b -hydroxyethyl)-terephthalamide with a lower aliphatic acid.  Examples are given of the preparation of N,N1 - bis - (b  - hydroxyethyl)-terephthalamide and its diacetate and dipropionate; N,N1 - tetra - (b  - hydroxyethyl) - terephthalamide and its tetra-acetate.
Patent GB-505518-A (GB)
Title: Improvements in or relating to envelopes
IPC: B65D27/06
Filed: 1938-02-03
Abstract: 505,518. Envelopes. SKEINS, D. M., and DICKINSON & CO., Ltd., J. Feb. 3, 1938, No. 3389. [Class 146 (ii)] An envelope particularly adapted for reply purposes has on the rear portion c an upwardly extending portion c<1> which is adapted to be folded into the interior of the envelope, over the enclosure, upon a fold-line c<2> positioned well within or below the fold-line a<3> of the closure flap a<1> whereby the enclosure cannot be damaged by the action of an envelope opening machine. The extension c<1> serves to receive the name and address of the addresser of the envelope.
Patent GB-699684-A (GB)
Title: Improvements in attenuators and resistive networks
IPC: H03H7/24
Filed: 1950-02-09
Abstract: 699,684. Regulating switches. WILKINS, S. R., and AUTOMATIC COIL WINDER & ELECTRICAL EQUIPMENT CO., Ltd. May 3, 1951 [Feb. 9, 1950; Feb. 9, 1950], Nos. 3403/50 and 3404/50. Class 38 (v) [Also in Group XXXVI] A variable attentuator comprises series and parallel resistance sections printed on an insulating base. The make the continuously variable H.F. attentuator, Fig. 4 corresponding to Fig. 1 the resistance pattern Fig. 2 is first printed on the insulating disc 14 and then the highly non-conductive pattern Fig. 3 producing the required contact portions is printed on. Thus Fig. 4 corresponds to Fig. 1 and comprises radial meshes or parallel-connected sections 13 of resistance deposit (b in Fig. 1) all connected to a central contact or earthy deposit 17, Fig. 3 and series connected meshes or sections 12 of resistance deposit (a in Fig. 1) tapped off via contact segments 15, Fig. 3. The contact member (not shown) may travel on the contact segments 15 or on contacts on the reverse face of the disc 14 with the whole of this reverse face except for the contacts covered by an earthy deposit. In Fig. 4 the earthy deposit 17 may extend up between the radial resistance meshes. A tapped H.F. attenuator Fig. 6, 7 and 8 (not shown) according to network Fig. 5 is produced in a similar manner to that outlined above or Fig. 4.
Patent GB-1166435-A (GB)
Title: Joints in High-Vacuum Systems
Inventor: BALITSKY ANDREI VASILIEVICH
IPC: F16L23/20
Filed: 1968-01-23
Abstract: 1,166,435. High vacuum joints. A. V. BALITSKY, N. I. PENKIN, L. A. FILATOVSKY, N. I. GAVRILOV and R. E. RYBCHINSKY. 23 Jan., 1968, No. 3417/68. Heading F2G. In a flanged joint one flange 1, Fig. 1 is endless and has an endless recess 5 or has a plurality of recesses to receive respectively an endless projecting member 7, or projecting pins (12), Fig. 2 (not shown), a sealing member 9 being held in the sealing position by the projecting members so that as the two flanges are tightened together, the flanges compress the sealing member and push the projecting members into their recesses. The projecting member 7 is a split-ring installed on temporary mounting supports 6 and expanded into contact with the flange by a metal wedge 8. A wire seal 9, e.g. of copper or nickel, is pulled on this temporary projection and the temporary supports 6 are removed so that the member 7 and seal 9 are held in position by friction until the flanges are tightened together. The individual projecting pins (12) are used on non- circular flanges e.g. rectangular.
Patent GB-856834-A (GB)
Title: Improvements in and relating to thermo-plastic sealing compounds
IPC: C08L23/06
Filed: 1958-02-03
Abstract: A thermoplastic sealing compound comprising polyethylene wax and an approximately equal quantity by weight of polymerized wood rosin has a low degree of shrinkage and may be used in potted assemblies of electrical components such as rectifiers. Polyethylene of melting point 103-105 DEG C., and molecular weight 3 500 is melted and wood rosin polymerized with sulphuric acid containing not less than 30% dimeric abietic acid and with an acid value of not less than 140 added gradually with stirring.
Patent GB-1362206-A (GB)
Title: Apparatus for synthesising polyphase sine waves
IPC: H03B28/00
Filed: 1972-01-28
Abstract: 1362206 Waveform changing G & E BRADLEY Ltd 28 Jan 1972 [29 Jan 1971] 3517/71 Addition to 1206941 Heading H2F In apparatus for synthesizing polyphase sine waves, a non-sinusoidal (e.g. square wave) source 10 feeds a chain of frequency dividers 11 ... 16 which provide a primary non-sinusoidal oscillation of frequency f and further first phase oscillations of multiple frequency 3f, 5f &c., the components of the Fourier series of the further oscillations having the same relationship to one another as those of the primary oscillation f; the frequencies and phases of the further oscillations being such that when combined at 18, with the primary oscillation f, cancellation of the significant harmonics takes place so that the resultant output is sinusoidal. The dividing chain includes a stage 15 which divides by n (where n is equal to the required number of phases) and has n outputs which are fed to further combining means (not shown) together with appropriate further harmonic-cancelling oscillations so as to provide sinusoidal outputs at the other phases. Fig. 1 shows part of a system for providing a three-phase output. A square wave source 10 of frequency 30,030 f is fed to the dividing chain 11 ... 16, having the division ratios shown, to provide a square wave at the fundamental frequency f. Further dividers provide the harmonic-cancelling square waves 3f ... 15f, which are fed to a summing circuit 18 comprising weighted resistors 17, 23 ... 28. The first phase output is obtained from an amplifier 19 via an optional filter 20. Dividers 15, 30 ... 33 have a ratio of 3 and provide outputs displaced by 120 degrees so as to supply fundamental and harmonic-cancelling oscillations to further summing circuits (Figs. 2 and 3, not shown).
Patent GB-292436-A (GB)
Title: Improved machine for the manufacture of snares for catching hares, rabbits and the like animals
IPC: B21F45/00
Filed: 1928-02-04
Abstract: 292,436. Parkinson, T. Feb. 4, 1928. Making wire articles; twisting wires together; shearing-adjuncts.-In a machine for making wire snares for catching rabbits &c., the wire is wound round a pair of twisting hooks, one of which is rotated' by toothed gearing from a handwheel and the other of which is formed on a U- shaped bar, which is adjustably fixed to another bar and is traversed horizontally by a foot-operated cable so as, through the agency of bell-crank levers, to operate vertical rods for ejecting the finished snare from the hooks. Wire 40 is secured at one end to an eyelet which is placed on a hook 8 and is then wound round the hooks 8 and 10. The hook is rotated by toothed gear 7<a>, 3 from a handle 4 and the hook 10 is formed on a U-shaped bar slidable in brackets 11, 12 and held in its outermost position by a spring 22. The bar is connected by a pair of rods 15, 20 with screw-threads of opposite hand and an adjusting nut 21 to a similar bar 16 slidable in brackets 17, 18. These bars are operated by a pedal and cable 30 so as to release the tension on the finished snare and to operate through bell cranks 25, 26 a pair of rods 23, 24 with grooved ends for discharging the snare into a trough 45. A curved plate 46 is provided to project the snare forwards and a curved bracket 47 to facilitate winding of the wire round the eyelet. In making a humane snare that will not close tightly around the neck of the animal, a metal member 41, preferably of figure of eight form, is placed in a slotted lever 42 and inserted in the strands before twisting. After insertion the lever, which is pivoted at 43 is moved out of the way by a handle 44. After the desired length of wire has been wound round the hooks it is cut off prior to twisting, by spring-opened shears 32 which are carried by a spring-returned lever 33 operated by a pedal and are pressed into contact with the wire by engaging a recess 38 in a bracket 37. A similar apparatus operated by the same hand wheel may be arranged at the other side of the base plate.
Patent GB-102007-A (GB)
Title: Improvements in or relating to Mixing Machines.
Inventor: MONK THOMAS
IPC: A21C1/06
Filed: 1916-03-09
Abstract: 102,007. Monk, T. March 9, 1916. Stationary batch-mixers with rotary stirrers.- A mixing-machine for dough &c. consists of a trough a tiltable upon a longitudinal shaft b which carries oblique agitators h working between stationary members f secured to the trough at their lower ends and having bosses at their upper ends to engage the shaft b. Projections or catches are provided on one end of the trough a and on the machine frame c to lock the trough in its normal and tilted positions. The rotary blades h have projections h<2> on their edges, and are disposed at about 45 degrees to the axis of the shaft 5. Each pair of blades working between a pair of statiunary members f may be set at 180 degrees to each other. The upper part of one side of the trough may consist of a door hinged at its lower edge.
Patent GB-113845-A (GB)
Title: Improved Governor for use on Motor Vehicles.
Inventor: MARSHALL CLAUDE ORROCK
IPC: B60K31/12
Filed: 1917-03-09
Abstract: 113,845. Marshall, C. O. March 9, 1917. Automatic speed control.-Governing apparatus for motor vehicles comprises two centrifugal governors d, e, one driven by the vehicle wheels, the other by the engine, and both adapted to actuate the throttle of the engine through levers g, k, links h, l, sliding wedges &c. i, j, and the rod m. The slide j has an inclined face o to give an additional opening of the throttle at starting. The levers g, k or other suitable parts may carry pointers &c. to indicate the maximum speed attained.
Patent GB-115418-A (GB)
Title: Improvements in Attachments for Automobile Non-skid Tire Chains.
Inventor: MACWILLIAM HUGH GORDON
IPC: B60C27/08
Filed: 1918-02-27
Abstract: 115,418. Macwilliam, H. G. March 9, 1917, [Convention date]. Tread bands and projections.-Curved plates 3 are fitted between the tyre tread and the transverse chains 1 of a non-skid device, and may be formed with hooks 4 to engage the links adjacent the tread so as to restrict the outward movement of a broken chain. The inner surface of the plate is smooth to permit creeping of the chains, and the outer surface may be shaped to fit the interstices of the chain.
Patent GB-1033393-A (GB)
Title: Improvements in or relating to fuels for nuclear reactors
Inventor: GLUECKAUF EUGEN
IPC: G21C3/62
Filed: 1962-01-30
Abstract: In conjunction with a nuclear fuel (see Division G6) there is described a method of coating uranium monocarbide with silicon carbide by thermally decomposing methyl trichloro silone or silicon tetrachloride mixed with methane. Alternatively a coating zericonium carbide may be used.  A second coating may be applied over the first by depositing pyrocarbon by the decomposition of a hydrocarbon gas.ALSO:Uranium monocarbide particles are coated with silicon carbide by thermally decomposing methyl trichloro silane or silicon tetrachloride mixed with methane.  The particles may also be coated with pyrocarbon before or after the SiC coating.
Patent GB-395783-A (GB)
Title: Level winding reel
IPC: A01K89/015
Filed: 1932-02-08
Abstract: 395,783. Fishing-reels. CAMPBELL, A. B., 302, Crow Road, Broombill, Glasgow. Feb. 8, 1932, No. 3636. [Class 48.] The line guide 1 of a fishing-reel is pivoted in a bracket 2 and is oscillated by a cam 4 which engages a stud 12. The cam is driven by an eccentric 9 and ratchet 7. In a modification the heart-shaped cam is replaced by a grooved cam.
Patent GB-565502-A (GB)
Title: Improvements in or relating to linear dimension gauges
IPC: G01B7/02
Filed: 1943-03-05
Abstract: 565,502. Linear - dimension gauges. KAPELLA, Ltd., and COOKE, E. A. March 5, 1943, No. 3636. [Class 106 (ii)] A linear-dimension gauge comprises two gauging elements D, E respectively carried by two gauging bars D<1>, E<1>, each supported by parallel spring ligaments F<2>, F<3> and G<2>, G<3> so arranged that the bars always remain parallel to each other and to a fixed line, and an electromagnetic device L for controlling an indicating or recording instrument O in accordance with relative longitudinal movement of the two bars. The element D is adjustable along the bar D<1>, being locked in adjusted position by a bolt D<6>, operated by a lever D<5>. The element E is secured to either of two sockets H<3> connected by a leaf spring H<2> to a projection of the bar E<1>. Operation of a wheel J turns a screw to adjust the element E to fine limits. The supports F<4> for the spring ligaments F<2>, F3, G2, G<3> are adjustable vertically, whereby the height of the gauging elements above the table may be varied, under the control of a wheel C (not shown) operating a screw C<4>. In operation, a master element is placed on the table and the gauging elements adjusted until a downward projection M of the bar D<1> is midway between coils L<1>, L<2> attached to the bar E<1>, when the indicator O will show zero. The master element is replaced by a work-piece and variation from the standard affects the reluctance of the coils L', L<2>, whereby the indicator O will be affected. The circuit may be of the type shown and described in Specification 541,627, [Group XXXVIII].
Patent GB-1488808-A (GB)
Title: Stripping tools
IPC: H02G1/12
Filed: 1975-01-20
Abstract: 1488808 Cable strippers PRESSMASTER Ltd 20 Jan 1975 [25 Jan 1974] 03636/74 Heading B4W [Also in Division H2] The main body of a stripping tool comprises a handle 4 and clamping jaw 2. Pivotally attached to the body at 14 is clamping jaw 3 and at 10 a handle 5. Driving arm 9 pivoted on handle 5 operates on cam surface 15 of jaw 3 to close it and then acts on protruding arm 20 of pulling means 19 to which are attached stripping jaws 6, 7, thus moved relative to the clamping jaws. A cable cutter 32, a movable blade of which is mounted on the pulling means, may be provided and guarded and pivoted bridge 29, adjustable by means 31, may provide a surface along which stripping jaw 6 may slide parallelly to jaw 7. Spring biasing is provided for the pulling means, driving arm and stripping jaws, and the driving ard and protruding arm are provided with rollers. The machine may be hand operated, or by hydraulics, or by compressed air.
Patent GB-246672-A (GB)
Title: Improvements in connection with the valve gear of internal combustion engines
IPC: F01L1/12
Filed: 1925-02-10
Abstract: 246,672. Turner, E. Feb. 10, 1925. Crank chambers and like casings.-To facilitate detachment of the cylinder head, and to render the valve gear independent of the heat expansion of the cylinder, in engines with overhead valves, the valve gear is mounted on, and enclosed by, an extension A of the crank case B. The casing A may be formed with an attachment F for connecting the engine to the frame, for example, of a motorcycle. Cylinders and valve chests, mounting.-The casing A may also carry a beam E for securing the cylinder and cylinder head in position.
Patent GB-343301-A (GB)
Title: Improvements in and relating to domestic fire-places
IPC: F24B1/195
Filed: 1930-02-05
Abstract: 343,301. Bricks for fireplaces. MAcNAMARA, C. M., 30, Moir Street, and MURRAY, J. C., 17, Clarence Drive, Hyndland, both in Glasgow. Feb. 5, 1930, No. 3850. [Class 87 (i).] Bricks 8 .. 11 which are superposed to form an open fireplace with front and rear flues 14, 7 are of a shape which in plan resembles an H. The bricks shown all comprise similar side members, the front parts of which are splayed to form the side walls of the fireplace, as shown in Fig. 5, which represents a plan of the brick 10, and each brick is formed with a cross member, which, in the case of the bricks 9, 10, 11, is hollow to form the front flue 14. The rear flue 7 is bounded by the cross member and side walls of the bricks and by the back of the fireplace recess. The cross member 3 of the bottom brick is formed with a tapered port 4 leading to the rear flue, and a tapered port 15 in the cross member 12 of the brick 9 leads to the flue 14.