baber/WOPTO huggingface dataset:
Patent GB-779318-A (GB)
Title: Process for separating the d-(-)-threo-1-(p-nitrophenyl)-2-amino 1,3-propanediol from the racemic compound
Filed: 1955-10-04
Abstract: D - (-) - threo - 1 - (p - nitrophenyl) - 2 - amino-1,3-propanediol is separated from the racemic compound by reacting the DL-threo-1-(p-nitro-phenyl) - 2 - amino - 1,3 - propanediol with an optically active monosaccharide capable of reducing Fehling solution, subjecting the condensation product thus obtained to fractional crystallization to separate the condensation product of the monosaccharide with the laevorotatory amino-diol which is then hydrolysed with dilute mineral acid, and the resulting solution is made slightly alkaline to phenolphthalein to precipitate the required propanediol.  In the example D-glucose is used as the monosaccharide and absolute alcohol as the solvent, the mother liquor remaining after the precipitation of the desired laevorotatory aminodiol may be evaporated to remove the alcohol and the residual oil may then be hydrolysed and made alkaline as above to recover the dextrorotatory amino-diol and any residual recemic compound.
Patent GB-870026-A (GB)
Title: Mop manufacture
IPC: A46D1/08
Filed: 1959-08-18
Abstract: 870,026. Swabs. MOSS, T. V. Aug. 18, 1959 [May 12, 1959], No. 28199/59. Class 19. A mop swab consists of a number of parallel cords 1 which at each end are stitched or otherwise secured to fabric or thermoplastics tapes 4, 5 positioned on one or both sides of the cords. A further cord 6 is then secured about the middle of the swab after the central portions of the cords have been bunched together. U.S.A. Specification 2,825,914 is referred to.
Patent GB-1451016-A (GB)
Title: Sludge processing plant
IPC: F23G5/44
Filed: 1974-06-25
Abstract: 1451016 Feeding sludge CLAUDIUS PETERS AG 25 June 1974 [23 June 1973] 28202/74 Heading B8S Apparatus for feeding sludge to a processing plant such as a fluidized bed furnace 1 comprises a distributor tank 3 with a plurality of apertures 7 in its bottom 8 for feeding sludge to the furnace 1 and a distributor formed in Fig. 1 by a central rotary ring 5 on which scrapers 6 are fixed. During rotary movement of the scrapers 6 the sludge in the tank 3 passes through connecting pipes 9 into the inner chamber of the furnace 1. The apertures 7 may be arranged in one or more spirals, Figs. 2, 3 (not shown). Fig. 4 shows an embodiment wherein the distributor includes alternate scrapers 11 and conical rollers 12 arranged on a rotating frame 10. A rotatable slide plate 13 is between the distributor and the bottom 8 of the tank 3. In a further embodiment, Fig. 10 (not shown), the distributor tank 3 is provided with a heatable jacket (27) or (28) and is closed at the top, gases formed therein being fed through a pipe (29) to the furnace 1. When closed at the top the tank 3 may be pressurized and this aids the feeding of the sludge to the furnace 1. Provision of a rotatable slide plate such as 13 in Fig. 4 provides space between it and the bottom 8 of the tank 3 for air or water to be fed in as a barrier medium, via an inlet (not shown) to reduce wear of the slide plate 13 on the bottom 8.
Patent GB-189622-A (GB)
Title: Improvements in and relating to a method of producing wrought iron
IPC: C21C3/00
Filed: 1921-10-25
Abstract: 189,622. Hibbard, H. D. Oct. 25, 1921. Purifying and refining.- In the production of wrought iron, molten metal and oxidizing agent are poured repeatedly directly from one container to another, air being excluded, in the form of a sheet of molten metal so that by the repeated impact produced by the pouring the iron collects as a ball or bloom the slag remaining in the molten state. The ball or bloom is passed from one container to anotner to expel the entrained slag therefrom and may be discharged to a squeezer or may be rolled while in contact with the slag until it has assumed an elongated shape. During the operation heat is supplied to maintain the temperature until the non-ferrous elements have been substantially eliminated and the iron comes to nature. In making iron of superior quality two slags are utilized, the first being poured off after the bulk of the silicon phosphorus &c. has been eliminated, and then fresh oxidizing material together with a flux added. The process may be carried out in the furnaces described in Specifications 162,624, [Class 51 (ii), Furnaces and kilns for applying &c.], and 179,888.
Patent GB-1108959-A (GB)
Title: Improvements in and relating to infinitely variable gears
IPC: F16H9/16
Filed: 1965-07-05
Abstract: 1,108,959. Expanding-wheel gearing. REIMERS-GETRIEBE A.G. 5 July, 1965 [3 July, 1964], No. 28422/65. Addition to 940,870. Heading F2D. The dashpot member 17 of the expanding- wheel gearing described in the parent Specification is modified by providing an associated freely movable, instead of spring-loaded, valve ring. In the arrangement shown the valve ring 130 is in the form of an external annulus with a peripheral seal 140 and is separable from the member 17 in one direction of travel to open a free-flow radial gap between the members, the gap being closed in the opposite direction of travel so that liquid is expelled through the throttle openings in the member 17. The ring valve may constitute an external or internal annulus, and the throttle openings may be provided in the member 17, valve ring 130 or cylinder wall 25, Figs. 4-9 (not shown).
Patent GB-825589-A (GB)
Title: Improvements in or relating to electromagnetic relay sets arranged in strip form
IPC: H01H50/04
Filed: 1957-09-09
Abstract: 825,589. Electromagnetic relays. SIEMENS & HALSKE A.G. Sept. 9, 1957 [Sept. 7, 1956], No. 28449/57. Class 38 (5). A relay set has a fixed magnetic circuit comprising a flux member 29 having surrounding insulation 32 and a core member 37. Each relay comprises two short arms 30 and one long arm 31 of the member 29, an armature 34 on a support 35 and carrying a cylindrical contact 46, two arms of the core member 37 and part of a fixed contact member 39 having cylindrical contacts 47 or spring set lugs 45. The inner arms 30 of the member 29 and the inner arms of the member 37 are common to two relays. The armature 34 normally rests against the insulation 32 of the arm 31 and a short gap is arranged between them and the parts 37, 39 which are mounted together. When a coil surrounding the armature 34 and the arm 31 is energized the armature is repelled by the arm 31 and attracted by the member 37 so that contacts 46, 47 engage and the magnetic circuit is completed through the arms of the member 37 and the arms 30 which are slightly spaced apart but face each other over a large area. A holding coil may also surround part of the armature and arm 31 or one of the arms 30. In the latter case one holding coil can be used for two relays. Soldering lugs 36 and 40 ... 42 complete the circuit connections and indentations 38 in the member 37 reduce the gaps in the magnetic circuits. A set of parts 34, 35, 37, 39 can be mounted on each side of a common flux member 29 and Fig. 2a shows an insulating carrier 1 for two such arrangements with common coils. A panel 2 carries box-like parts 3, 4 which receive arms 30, 31 respectively and have projections and guides 5 . . . 8, 14, 15 to locate and space the parts. One operating coil surrounding one end of the part 4 will operate four armatures 34 and a clip-in part 26 is provided to make the connections to the coils. Rectifiers may be mounted by means of projections on the parts 3. In Fig. 4a the arm 31<SP>1</SP> is of magnetized steel so that the upper diagram shows the normal flux paths and the lower diagram shows the flux paths in the energized condition. Modifications are also described which enable the armatures and contacts to be readily observed (Figs. 4b, 4c, not shown). Specification 825,590, [Group XXXVII], is referred to.
Patent GB-700488-A (GB)
Title: Liquid ring pump
IPC: F04C19/00
Filed: 1951-12-05
Abstract: 700,488. Liquid-ring pumps. NASH ENGINEERING CO. Dec. 5, 1951 [Feb. 15, 1951], No. 28310/51. Class 110 (1) In a liquid-ring pump comprising a chamber having successive segments of different contours divided from one another by boundary edges which are successively crossed by the outer edges of the rotor blades, and an inner wall provided with inlet and outlet ports having boundary edges successively crossed by the inner edges of the blades, some at least of the boundary edges and blade edges are relatively skewed so that the crossing takes place progressively. This reduces noise, vibration and cavitation. In the embodiment shown, the rotor blades 16a are skewed, so that their inner edges 27a cross the axially disposed lateral edges of the inlet and outlet ports 23a, 26a at an angle. Likewise, the axially extending boundaries 29a, 30a between the lobes 18a, 19a and lands 17a are crossed at an angle by the outer edges 28a of the blades. In a modification, the blades are twisted so that their outer edges only are skewed. The blades may be axially disposed, in which case the skew is given to the edges of the ports or to the boundaries between the lobes and lands. The latter effect may be obtained by boring the lands with a slight conicity or by making the lobes conical in the manner described in Specification 700,487. In the lattercase, the blades are, in addition, twisted so that their outer edges are skewed. Specifications 379,891 and 462,208 also are referred to.
Patent GB-835432-A (GB)
Title: Improvements in or relating to mining machines
Inventor: ANDERSON ARVID ROBERT
IPC: E21C27/12
Filed: 1956-09-18
Abstract: 835,432. Mineral mining apparatus. COLMOL CO. Sept. 18, 1956, No. 28521/56. Class 68(1) In a mineral mining machine a plurality of spaced, rotary, cutter-breaker arms 221 are secured on spaced rotatable, parallel, forwardly projecting shafts of a gear box 214, which together with driving motors therefor are mounted in a track 212 on a frame 203. The gear box may be slid laterally along the track when a motor 234 rotates an axially immovable screw 232 engaging in a threaded boss of an arm 241 secured to the gear box 214 to project rearwardly through an opening in the frame 203. Guideways 205 on 'the frame 203 engage about and are axially movable of vertical posts 204 by a motor 210 rotating another axially immovable screw 206 engaging in a threaded boss 207 on the frame 203. The posts 204 are mounted on a mobile chassis. The cutter arms 221 are caused to automatically follow a rectangular path over a face of a seam by an hydraulic circuit which supplies liquid under pressure to the motors 210 and 234 in a manner determined by which of four control valves 236-239 disposed at the four corners of said path was last contacted and actuated. The plungers of the valves 236 and 238 and 237 and 239 are horizontally and vertically disposed respectively and lie in the path of the arm 241 to be actuated thereby to change the linear direction of movement of the arms 221 at each corner of said rectangular movement. Pick-carrying endless chains circulating about jibs undercut the mineral and load disintegrated mineral on to a conveyer extending rearwards through the chassis of the machine. Pick-carrying plates can be slidably mounted on eccentrics of the projecting shafts of the gear box so that the plates are caused to oscillate to remove the cusps left by the cutter arms 221.
Patent GB-364094-A (GB)
Title: Improvements in and relating to speed measuring apparatus
IPC: G01P3/40
Filed: 1930-09-24
Abstract: 364,094. Stroboscopic apparatus. VEDOVELLI, M., 4, Via Giulini, Milan, Italy. Sept. 24, 1930, No. 28543. Convention date, Sept. 25, 1929. [Class 97 (i).] Portable stroboscopic apparatus for determining the speed of revolution of a rotary member comprises a flexible shaft 3, driven by a motor, e.g. an electric or spring motor, the shaft 3 passing through a handle 2 and terminating in a shaft 4 which drives, through the variable speed gear shown, the shaft 5 acted on by the band, expansion, hydraulic or electric, &c. brake and driving the speed revolution counter 7. The shaft 5 drives through the gearing 8, the shaft 9 and crank 10 connected bv a rod 11 to a plate 12 mounted to oscillate about a pivot 13 supported by eyes 14 fastened to the sides of the casing 1. A mirror is carried by the plate 12. To measure the speed of rotation of a rotary member, the member or a mark on it is observed by reflection in the mirror and the frequency of oscillation of the mirror is adjusted by the variable speed gear 4, 5 and brake 6 until the rotary member or a mark on it appears stationary, the speed of revolution of the rotary member being then given by the speed revolution counter 7. Instead of the rotary member being observed in the mirror, the stroboscopic effect may be utilized by reflecting a light beam from the mirror on to the rotary member which is then lit up periodically. Instead of the mirror being oscillatably mounted it can be rotatably mounted on the shaft 9 as shown in Fig. 3. In a further modification, Fig. 4, the disc 16 is mounted transversely on the shaft 9 and is provided with reflecting portions 17. The disc 16 may be mounted as a swash plate in an inclined position on the shaft 9. In order to determine whether the speed obtained is a multiple or sub-multiple of the actual speed a second motor, Fig. 5, is oscillatably mounted in the opposite face of the casing 1 and is driven by change speed gearing 18 to oscillate at a frequency which is a multiple or sub-multiple of the frequency of the first mirror, the rotary member being observed successively in both mirrors. A similar arrangement can be used for mirrors rotatably mounted.
Patent GB-500308-A (GB)
Title: Improvements in or relating to built-up boarding
IPC: E04C2/38
Filed: 1937-10-20
Abstract: 500,308. Laminated - - wood members. SCHIFF, G. Oct. 20, 1937, No. 28561. [Class 145 (ii)] Built-up boards, doors, &c. of the kind in which a framework or core 1, 1a is faced with plywood sheets 2 or other material, are provided with an end strip or portion 3 of greater width than the core, the facing sheets being correspondingly reduced in thickness at one edge 2a from the inside, and secured by cementing or otherwise to the core and the end strip. The wider strip 3 may have an inward extension 3b of the same width as the core or it may be in one with the core or connected thereto by a dovetail or similar joint. All the edges may be finished in this way. Specification 433,897 is referred to.
Patent GB-759688-A (GB)
Title: Improvements in and relating to telecommunication systems embodying automatic exchanges
Inventor: LEVY MAURICE MOIESE
IPC: H04Q11/04
Filed: 1950-11-23
Abstract: 759,688. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd. Nov. 23, 1951 [Nov. 23, 1950], No. 28704/50. Class 40 (4). An automatic exchange of the type described in Specification 759,687 is modified so as to include a second set of low-grade channels. The first low-grade channel is used to transmit a calling signal to the wanted subscriber's line circuit and the second channel to transmit signals indicative of a high-grade channel to be used in connecting the line circuits of the called and calling subscribers. As described in Specification 759,687, a calling subscriber's line circuit 12 seizes a calling unit 15 associated with a high-grade multiplex speech channel 17, 18, and the calling unit seizes a register 23 which is set by the dialled digits. The register then derives from the MCDU pulse generator or a pulse of low recurrence frequency, whose time position in its cycle denotes the wanted subscriber's number. This pulse is fed directly through the calling junction 25 to all the subscriber's line circuits and is gated into the wanted subscriber's line circuit 13 by its associated pulse received direct from the MCDU pulse generator 26. This pulse is effective to seize the wanted subscriber's line circuit and to cause it to seize a called unit 16. The time interval occupied by this pulse is also used to transmit over the identification junction 26 a pair of pulses from the generator 21, said pair of pulses indicating the identity of the seized high-grade junction and these are gated through the wanted subscriber's line circuit to the seized called unit which is set thereby to receive and transmit signals to the high-grade junction channel associated with the calling unit 15. The present system has the advantage that whereas in Specification 759,687 reliance had to be placed on the comparatively narrow identification pulses for effecting seizure of the called subscriber's line circuit, a comparatively broad pulse is used in the present case. Specification 759,682 also is referred to.
Patent GB-647868-A (GB)
Title: Improved lamella plates or sheets and method for producing same
Inventor: TROLIN GUSTAV DANIEL
IPC: B27D1/06
Filed: 1948-11-04
Abstract: 647,868. Wood blocks. ANKARSVIKS AKTIEBOLAG. Nov. 4, 1948, No. 28714. Drawings to Specification. [Class 145(ii)] In a method of producing lamella plates, consisting of a number of boards lying side by side and having veneer plates secured on the top and bottom, cuts are made in the upper and lower surfaces of the boards by thin edged steels before the veneer plates are secured thereto. The cuts are made in the longitudinal direction of the wood and those in the top surface are situated between those in the bottom surfaces, the depth of cut being at least half the thickness of the wood.
Patent GB-262573-A (GB)
Title: Improvements relating to trucks or trollies for transporting goods
IPC: B62B1/22
Filed: 1925-11-14
Abstract: 262,573. Timms, A. Nov. 14, 1925. Hand-trucks; vehicles with removable bodies. -A hand-truck is provided with a lever handle having pivoted or secured thereto a link adapted to engage a receptacle and draw it on, or push it off, the platform of the truck on operation of the lever. As shown, the lever handle 8 has pivoted thereto a hooked link 9 which is adapted to engage a receptacle 12 to draw it on to the platform 1. The wheels 2 are mounted preferably forwardly of the platform, and the underside of the platform is chamfered as shown at 5. Base margins 13 of the box or receptacle are recessed at 14 to engage the axle of the truck. In a modification, the margins 13 are dispensed with and guides are provided on the platform 1.
Patent GB-603811-A (GB)
Title: Process for the manufacture of quaternary pyridinium salts
Filed: 1945-10-30
Abstract: Pyridinium salts of the general formula <FORM:0603811/IV(b)/1> where R represents a methyl group, R1 represents a methyl, ethyl or aralkyl group, R11 represents hydrogen and X and Y represent methyl or ethyl groups, are prepared by treating a compound of the general formula <FORM:0603811/IV(b)/2> where R, R1, R11, X and Y have the above significance, with a halogenating reagent, namely chlorine, sulphuryl chloride, bromine or any other reagent effective in the halogenation of ketones, ketoesters or their enolic derivatives.  The halogenating reagent may be dissolved in a diluent and the pyridinium salt may be freed from traces of hydrogen halide by gently warming with the application of partial vacuum.  In examples: (1) and (2) N - benzyl - 2 - methyl - 3 - hydroxy - 4 : 5 - dicarb - methoxy-pyridinium chloride is obtained by treating N - benzyl - 2 - methyl - 3 - hydroxy-4 : 5-dicarbmethoxy-dihydropyridine with sulphuryl chloride or a solution of chlorine in carbon tetrachloride; (3) similarly N-benzyl-2-methyl-2-methyl-3-hydroxy-4 : 5 - dicarbmethoxy - pyridinium bromide is obtained by using a solution of bromine in carbon tetrachloride as the halogenating reagent; (4) 1 : 2-dimethyl-3-hydroxy-4 : 5-dicarbethoxy-pyridinium chloride is obtained by treating 1 : 2-dimethyl-3-hydroxy 4 : 5-dicarbethoxy-1 : 2-dihydropyridine with sulphuryl chloride.  Specifications 551,216, 556,044 and 591,170 are referred to.
Patent GB-536025-A (GB)
Title: A protective device for use on dynamo electric machines
IPC: H02K11/00
Filed: 1939-10-27
Abstract: 536,025. Protective cut-out arrangements. BERESFORD & SONS, Ltd., J., and GOLD, R. L. Oct. 27, 1939, No. 28853. [Class 38 (v)] [Also in Group XXXV] A stator a is enclosed in a chamber consisting of an outer casing d, lining e, and end walls f. Within this chamber is a box g having a deformable member h controlling a switch in response to the pressure in the chamber. In a modification the box g is outside the chamber and is connected thereto.
Patent GB-637828-A (GB)
Title: Improvements in electric stoves
IPC: A61F7/00
Filed: 1947-10-29
Abstract: 637,828. Electric stoves. KOTIK, J. Oct. 29, 1947, No. 28878. Convention date, Nov. 22, 1946. [Class 39 (iii)] An electric stove comprises a block of fire bricks 1 surrounded at the top and sides by an insulating layer 4 disposed in a closed casing 5 from which it is spaced, heating elements 8 being located in horizontal ducts 7 in the block 1. Vertical air channels 9 connect the ducts 7 in groups, and open top and bottom into an air space 6 between the block 1 and the casing 5. A manually operated slide 12 controls an opening 11 linking a space 10 with the air space 6 between the block 1 and casing 5. The ducts 7 are corrugated transversely to increase the surface area of the elements 8 free to the air which circulates inside the stove.
Patent GB-1084134-A (GB)
Title: Novel quaternary ammonium salts, their preparation and use as surface-active agents
Inventor: KOEBNER ADOLF
IPC: C11D1/62
Filed: 1964-07-14
Abstract: A detergent composition comprises from 1 to 25% by weight of a quaternary ammonium salt of the formula <FORM:1084134/C4-C5/1> wherein A is a C8 to C18 alkyl or alkenyl group, p is 2 or 3, x has a value of from 3 to 20, R1 is a C1 to C4 alkyl group, R2 and R3 are each R1 groups, or A(OCpH2p)x- or -(CqH2qO)yH (where q is 2 or 3 and y has a value of from 1 to 20), or R2 and R3 together with the N atom form a 5- or 6-membered heterocyclic ring or R3 is a benzyl group, and X- is an anion such that the salt is water-soluble to the extent of at least 0.1 g/litre; and at least one non-ionic surface-active agent.  Specified non-ionic surface-active agents are alkyl polyoxyethylene glycols, and alkylphenyl polyoxyethylene alcohols. Conventional quaternary ammonium salts containing the hydrophobic hydrocarbon group directly attached to the N atom, and ampholytic surface-active agents may also be present.ALSO:The invention comprises a quaternary ammonium salt of the formula <FORM:1084134/C2/1> wherein A is a C8-C18 alkyl or alkenyl group, p in each oxyalkylene group is 2 or 3, x has a value of from 3 to 20, R1 is a C1-C4 alkyl group, R2 and R3 are each groups of the formula R1 or A(OCpH2p)x- or -(CqH2qOy)H (where q in each alkyleneoxy group is 2 or 3, and y has a value of from 1 to 20), or R2 and R3 together with the N atom form a 5- or 6-membered heterocyclic ring or R3 is a benzyl group, and X- is an anion such that the salt is water-soluble to the extent of at least 0.1 gram/litre. They may be obtained by reacting an organic sulphate ester of the formula A(OCpH2p)xOSO3M (wherein M is a cation) with an amine of the formula HNYZ (wherein Y and Z may each be a hydrogen atom or an R1, R2 or R3 group) in the presence of a solvolytic medium and a base at a temperature of at least 100 DEG  C.; reacting the resulting amine with the appropriate organic halide or sulphate to yield the quaternary salt of formula <FORM:1084134/C2/2> wherein X1- is a halide or sulphate anion; and optionally exchanging the anion X1- to the anion X- by a double decomposition technique. When the product of any of the above stages contains a group of the formula -(CqH2qO)yH, this may be reacted with ethylene and/or propylene oxide.  Examples are given for the production of the compounds.  They are useful as surface-active agents in detergent formulations and as bacteriocides.