baber/WOPTO huggingface dataset:
Patent GB-885341-A (GB)
Title: Induction motors
IPC: H02K17/12
Filed: 1959-08-10
Abstract: 885,341. Induction motors. SULGER, H. E. Aug. 10, 1959, No. 27228/59. Class 35. A polyphase induction motor comprises a squirrel-cage rotor 24 and at least two axially spaced annular single-phase stator windings 38, one for each phase, the windings being electrically independent of each other. Each stator winding is enclosed by a magnetic core member 30 composed of two similar parts 33, each comprising an annular portion 34, which surrounds the outside of the stator winding, an end portion 35, and axially extending pole pieces 35<SP>1</SP> which pass inside the stator winding. The pole pieces of the two parts of the core member 30 extend towards each other and co-operate to form a system of interdigitated pole pieces. A stator winding and core is provided for each phase of the energizing current and the cores are separated by a spacer member 32, the rotor being common to all the stator cores. A threaded plug 20 holds the stator cores in position and also acts as a bearing support for the rotor. Current induced in the rotor conductors 26 by one stator interacts with the other stator to cause rotation. In a second embodiment the stator poles are axially divided into a number of fingers (Fig. 10, not shown) to reduce eddy currents. In a further modification one of the stators is angularly movable through 90 degrees so that the speed and direction of rotation of the motor can be varied (Fig. 11, not shown).
Patent GB-846194-A (GB)
Title: Improvements in or relating to centrifugal fans
IPC: F04D29/42
Filed: 1958-08-26
Abstract: 846,194. Centrifugal fans. WESTING- HOUSE ELECTRIC CORPORATION. Aug. 26. 1958 [Aug. 30, 1957], No. 27321/58. Class 110 (1). A centrifugal fan comprises an impeller having a non-shrouded inlet side, a scrollshaped casing around the impeller and a gas inlet plate carried by the casing with an inlet opening opposite the inlet side of the impeller, the axis of the opening being movable out of alignment with the axis of the impeller. In the centrifugal fan shown, an impeller having unshrouded radial blades 13 is located close to one side wall of a volute casing 14, the convergentdivergent inlet passage of the fan being formed in a member 22 which is clamped to the other side wall of the casing around an opening 18. The clamping is done by wing nuts 25 on bolts extending through slots in plates 20 riveted to the casing, the slots permitting the member 22 to be moved horizontally by means of a lever 31 and link 30. Moving the member 22 from the normal position in which the inlet passage is concentric (23C) with the impeller axis to a position in which the inlet passage is nearer (23A) or further (23B) from the cut-off of the volute increases or decreases, respectively, the output volume without changing the efficiency of the fan. A plate 26, pivoted at 27 to the interior of the casing at the cut-off, is connected by a link 28 to the member 22 so as to move with the latter from a normal position 26C into extreme positions 26A and 26B.
Patent GB-424819-A (GB)
Title: Method of separating the constituents of gutta percha resins
IPC: C09F1/00
Filed: 1934-09-24
Abstract: In the process described in the parent Specification, according to which resins are extracted from guttapercha, the albane is separated from the fluavil and returned to the gutta, the resins are extracted and the solvent, e.g. solvent naphtha, is removed at a temperature not exceeding 100 DEG  C., and the resins are allowed to stand at room temperature, whereupon the solid albane separates from the liquid fluavil.  The removal of the solvent may be effected by blowing steam through the solution.ALSO:In the process described in the parent Specification according to which, resins are extracted from guttapercha, the albane is separated from the fluavil, and returned to the gutta, the resins are extracted, and the solvent, e.g. solvent naphtha is removed from the extract at a temperature not exceeding 100 DEG  C., and the resins are allowed to stand at room temperature, whereupon the solid albane separates from the liquid fluavil.  The removal of the solvent may be effected by blowing steam through the solution.
Patent GB-434854-A (GB)
Title: Improvements in or relating to branch-pipe fittings
IPC: F16L41/08
Filed: 1934-09-24
Abstract: 434,854. Branch-pipe fittings. CHASE COS., Inc., 236, Grand Street, Waterbury, Connecticut, U.S.A., and JACKSON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London. Sept. 24, 1934, No. 27411. Addition to 399,106. [Class 99 (i)] The saddle portion 14 of the branch-pipe fitting 12 described in the parent Specification is provided with integral and imperforate pressed-in lugs 16 which project beyond the inner surface thereof and are adapted to engage or abut against the edges 18 of the port 11 formed in the main pipe or junction 10. These lugs serve to position properly the port 11 and the branch 13 of the fitting prior to and during the operation of soldering the fitting to the main pipe &c.
Patent GB-757696-A (GB)
Title: Elymoclavine and manufacture of ergot alkaloids by culture
IPC: C12P17/18
Filed: 1952-10-31
Abstract: Ergokryptinine, agroclavine and elymoclavine (C16H18ON2, claimed as new) are obtained by growing a culture of ergot fungus parasitic to Elymus sp. by surface culture in a nutrient medium of pH 3.2-8.4 containing an available carbon source, a source of assimilable nitrogen and essential mineral salts at 10-34 DEG  C.  Preferably, a fungus parasitic to Elymus mollis, Trin., is used, and propagated by the surface replacement culture method in a liquid medium.  The yield of alkaloids may be increased by departing slightly from the optimum conditions for growing the fungus, e.g. increasing the concentration of nutrients, adding propagation inhibitors, reducing the temperature below 28 DEG  C., avoiding the optimum pH of 6.6-6.8 and irradiation with visible or ultra-violet light. Suitable inhibitors are listed. The various alkaloids produced are separated from the fungus or culture medium by solvent extraction and from one another by partition between two solvents, e.g. water and an organic solvent. The medium is preferably acidified before extraction.  Separation may be facilitated by the use of an adsorbent such as "Japanese acid clay" (equivalent to fuller's earth).  The partition of the alkaloids between two solvents may be carried out by countercurrent extraction or by chromatography on a column of filter paper or other fibres, alumina, calcium carbonate, silica gel, starch or other porous substance.  The separated alkaloids are then purified by further solvent extraction and recrystallization.  Agroclavine may be converted into its succinate salt and subsequently liberated from this.  Examples are given of the process using mannitol or glucose as carbon source and ammonium glutamate, ammonium aspartate, ammonium succinate or asparagine as nitrogen source, with magnesium sulphate and (optionally) potassium biphosphate.  Other suitable nitrogen sources are aspartic acid, glutamic acid, glutamine and ammonium fumarate, maleate, malate and tartrate.  In the replacement culture method the subsequent media are not necessarily the same as the first.  Small quantities of other alkaloids such as ergokryptine, ergosine and ergosinine are also obtained.
Patent GB-1454576-A (GB)
Title: Electrodeposition of zinc
IPC: C25D5/26
Filed: 1974-06-20
Abstract: 1454576 Bright zinc electro-plating LEARONAL Inc 20 June 1974 [9 July 1973] 27495/74 Heading C7B In the electro-deposition of bright or semibright Zn from an aqueous alkaline bath containing 0-15 gpl free CN and an agent which gives a bright or semi-bright Zn deposit in the absence of impurities in the bath, a soluble silicate is added to the bath and/or to water used to rinse the substrate prior to plating in a quantity sufficient to ensure production of a bright deposit when the water hardness and/or other impurities in the bath would cause a dull, smeary or smutty deposit. The silicate may be water glass, or Na di-, ortho- or metasilicate in a quantity of 0À001-2 oz/gal. Baths based on ZnO in NaOH with or without NaCN may be used containing a brightener (1) a blend of anisic aldehyde bisulphite and the reaction product of epichlorhydrin and ethylenediamine or dimethylaminopropylamine or (2) the reaction product of diethanolamine, HCHO, epichlorhydrin and a-picoline.
Patent GB-479190-A (GB)
Title: Improvements in electric discharge tubes
IPC: H01J9/12
Filed: 1937-10-09
Abstract: 479,190. Electrode materials. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 9, 1937, No. 27502. Convention date, Oct. 12, 1936. [Class 39 (i)] An electric discharge tube contains one or more secondary-electron-emitting electrodes which have been prepared outside the tube by causing the vapour of an active material to deposit on a core body. Deposition of vaporized material on undesired parts of the tube is thus avoided, and the electrodes so prepared are stable in air. The active material may be an alkali or alkaline earth metal, such as barium vaporized in an evacuated vessel on nickel plates which are heated and maintained at a suitable potential during the process.
Patent GB-847223-A (GB)
Title: Shoe with a leather sole and/or heel provided with rubber inserts
IPC: A43C13/02
Filed: 1956-09-10
Abstract: 847,223. Boots &c. ODERMATT, A. Sept. 10, 1956 [Aug. 4, 1956], No. 27563/56. Class 17(2) A method of providing leather soles or heels with rubber plugs comprises providing a leather sole 1 with holes 2 in a pattern similar to rubber plugs 3 of greater cross-sectional area arranged on a rubber sheet 6. The plugs 3 have extension 8 which are pulled to reduce the thickness of the plugs while at the same time increasing their length and drawing them into the holes. When the shoe is completed the extensions are removed by severing them at 9. In a modified method of insertion individual plugs are forced into a tube having a flared end and normal thickness equal to that of the holes 2 and after insertion of the tube into the hole it is withdrawn leaving the plug in place. In this construction the back of sole is preferably subsequently covered by a rubber sheet 6. It is preferable to stick the backing sheet to the sole or heel. In each construction it is preferable to provide the holes 2 with widenings 5 at the outer surface so that the ends of the plugs 3 which project slightly are forced into the widening during walking. The outer end of the plugs 3 may also be slightly thickened and if a backing sheet is not used a flanged inner end may be provided. Coloured plugs may be used to produce a pattern on the sole or transparent rubber may be used.
Patent GB-208693-A (GB)
Title: Improvements in or relating to safety devices for use on electric networks or mains
IPC: H01T4/12
Filed: 1923-11-02
Abstract: 208,693. Soc. Anon. LutÞce LumiÞre. Dec. 20, 1922, [Convention date]. Protective arrangements for electric supply systems consist of an aluminium or other metal electrode L, Fig. 1, connected to the line, an aluminium electrode T connected to earth and a glass vessel E containing both electrodes and a reducing or neutral gas such as nitrogen or argon or carbon monoxide. The electrodes may be of any shape and where more than one line is to be. protected an electrode is provided for each line and more than one electrode may be connected to earth as shown in Fig. 6. The discharge path may contain a fuse or relay F<1> the operation of which opens line switches F. The adjacent surfaces of the electrodes may be smooth or roughened.
Patent GB-279830-A (GB)
Title: Improvements in and relating to universal joints
IPC: F16D3/38
Filed: 1927-10-18
Abstract: 279,830. Faudi, F. Oct. 27, 1926, [Convention date]. Universal joints.-The arms d', d<2> of the forks c<1>, c<2> of a Hooke's joint are parallel to the shafts and engage longitudinal slots in cylindrical bearing-pieces b<1>, b<2>, which are inserted radially from outside into bored recesses a<1>, a<2> in the arms of the cross-member a, these arms being provided, either on both sides or, as shown, alternately on either side. with somewhat wider slots a<3>. The fork arms d<1>, d<2> and slots in the pieces b<1>, b<2> are of rectangular section, the slots being open-topped, in order to section, the slots being open-topped, in order to facilitate simultaneous machining of a number of parts. Bolts or grub-screws e, engaging the bases of the bearing-pieces b<1>, b<2>, locate the arms d<1>, d<2> axially. One fork c<1> slides on its shaft. Specifications 8782/11 and 240,504 are referred The Specification, as open to inspection under Sect. 91 (3) (a), states that the arms d<1>, d<2> and slots therefor may be cylindrical. This subjectmatter does not appear in the Specification as accepted.
Patent GB-797897-A (GB)
Title: A vermin guard for the end of field drains and for like purposes
IPC: A01M19/00
Filed: 1955-09-29
Abstract: 797,897. Vermin guards : drainage and sewerage. MIERS, R. H. Sept. 11, 1956 [Sept. 29, 1955], No. 27690/55. Classes 5(1) and 33. Parallel grid bars 4 are mounted on a crossbar 2 from either end of which an arm 3 extends to the rear, to form a vermin guard for the end of field drain pipes. The arms, acting as spring fingers, are inserted in the end of the pipe ; their rear ends may be free or inter-connected in order to bow them outwards against the inner walls of the pipe. The grid bars are rivetted or welded to the front face of the crossbar ; one or preferably two bars are sufficiently long to engage the end of the pipe ; the central bar may be shorter than the remainder to form a gap between the tip of the bar and the pipe through which solid matter may escape from the pipe. The bars are spaced at approximately ¢ in intervals. The device may be of plastic or rust-resistant metal and be of various sizes to fit different pipes.
Patent GB-424222-A (GB)
Title: Improvements relating to electrically-operated thermal devices for closing and opening electric circuits
IPC: H01H37/10
Filed: 1933-10-09
Abstract: 424,222. Thermal switches. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, London, and GEE, F. J., Blencathra, Bean Road, Bexley Heath, Kent. Oct. 9, 1933, No. 27764. [Class 38 (v)] [See also Group XIII] A thermal switch compensated for variations of external temperature comprises two bimetallic strips 1, 26, which tend to move in opposite directions when heated, the strips being connected together by a coupling 19, 20 and one of them carrying a heating coil 7. Variations of external temperature cause no movement of the coupling, but when the coil 7 surrounding the strip 26 is energized, the strips and coupling move upwards and a bowed-spring 18 carrying contacts is caused to snap across from engagement with a contact on the strip 26 to engagement with a contact on a strip 2 that is connected to the strip 1 by the pillar 20. One end of the spring 18 is carried by an adjustable reinforced spring 23. Each bimetallic-strip may be all-steel with different grades of steel on its two sides. The Provisional Specification refers to Specification 416,421, [Group XXXIX].
Patent GB-1504187-A (GB)
Title: Catalyst for partial hydrogenation of acetylenic compound
IPC: C07C29/17
Filed: 1975-07-02
Abstract: 1504187 Hydrogenation catalyst BASF AG 2 July 1975 [3 July 1974] 27815/75 Heading B1E [Also in Division C2C] A catalyst for the selective hydrogenation of acetylenic compounds to olefinic compounds comprises a support and an active component comprising palladium and either (i) zinc plus bismuth and/or tellurium, (ii) cadmium plus bismuth and/or tellurium, or (iii) cadmium plus zinc, optionally plus bismuth and/or tellurium. The active component may comprise 20-70pbw of Pd, 10-30pbw of Zn and/or Cd and 10-30pbw of Bi and/or Te. The support may be alumina or pumice, e.g. gamma-alumina or Italian pumice. The catalyst may be in the form of particles of average diameter 0.05-0.35mm.
Patent GB-938304-A (GB)
Title: Improved carbon black collecting system
Inventor: RUBLE THEODORE ALLEN
IPC: B01D46/02
Filed: 1961-08-01
Abstract: <PICT:0938304/III/1> Carbon black may be recovered from a gaseous suspension by passage through a plurality of gravitational separators, e.g. cyclones, and thence into a bag filtering zone having at least two filtering compartments each of which contains at least one gas-permeable bag filter e.g. of glass cloth, and continuously and cyclically filtering the suspension in less than all of the filtering compartments with contemporaneous cleaning of the bag filters which are in the non-filtering zone by contacting the opposite side of the filter bag with a pulsating flow of repressuring gas substantially free of carbon black particles.  The carbon black separated by gravity, together with that dislodged from the filter bags is discharged into a pneumatic trough wherein the repressuring gas effects transport of the recovered carbon black. In Fig. 1, the suspension previously cooled to 400 DEG -600 DEG F., passes through at least two cyclones 3 and 9, whence separated carbon black passes into a pneumatic conveyer 31 through rotary gas locks 6 and 12.  The effluent from the cyclones in the first phase of the filtering cycle enters filtering compartments I and II through inlet manifold 13 and proceeds down through the upper bag nipple 48 and through the cloth of the bag 46 and clean effluent gas is withdrawn by fan 40 via 22 and 23 and discharged into the stack 42.  Repressuring gas is introduced to compartment III to clean the bags existing therein by withdrawing clean gas from stack 42 through duct 43 and pulsating damper 44 (Fig. 2, not shown) using fan 49, into duct 50 and thence through an open damper 27.  The repressuring gas passes through the cloth of the bags and down through the lower nipples 47 into the hopper 19 and out through damper 30.  The pulsating flow of gas flexes the cloth of the filter bags and thus shakes the carbon black into the hopper 19 from whence it is carried via the conveyer 31 to a fan 32, which blows the fluidized carbon black into a cyclone 36. The major part of agglomerated black falls down through hopper 36 and rotary gas lock 37 for further processing.  The fines are added to the main gas stream by line 35a and enter the primary cyclone 3 to be recycled.  In the second phase of the filtering cycle, cyclone effluent passes through compartments I and III with contemporaneous cleaning of compartment II and in the final phase of the filtering cycle, the cyclone effluent passes through compartments II and III whilst compartment I is cleaned.  The repressuring gas may be pulsated at 20 pulses per minute.
Patent GB-663257-A (GB)
Title: Oxidation catalysts and method of preparing same
Inventor: CAMBRON ADRIEN
IPC: C07D301/10
Filed: 1949-11-01
Abstract: An oxidation catalyst, for example, for the oxidation of ethylene to ethylene oxide is prepared by alloying silver with calcium, barium, strontium or magnesium and removing, e.g. by treatment with an oxidizing agent and then with an acid, at least 5 per cent of the alkaline earth metal or magnesium.  Specified oxidizing agents are air, moist air or steam employed at temperatures of 250-400 DEG C. or hydrogen peroxide or potassium permangante in which latter case they are incorporated with the acid.  Specified acids are dilute formic, acetic, citric, hydrochloric and nitric acids.  The alloy to be treated may be drawn into wire and formed into mesh cloth or may be comminuted by turning or crushing or by spraying into an inert gas. The treated particles may be formed into pellets or may be of selected sizes for employment in the fluidized technique.
Patent GB-323530-A (GB)
Title: Improvements in automatic means for heating water, making tea and the like
IPC: A47J27/62
Filed: 1928-10-01
Abstract: 323,530. Willson, E. A. Oct. 1, 1928. Electric hot-plates - Apparatus controlled by clock or other timing mechanism for use in heating water for making tea and other beverages or for other purposes comprises associated electromagnets with armatures adapted to co-operate in such a manner that one armature acts to open a fuel supply valve and is secured in this position by the action of the other associated armature. The arrangement is also applicable to the control of switches for heating water by electricity. In Fig. 1 the kettle 50 is heated by a burner 3 and boiling water is arranged to be forced through a pipe 52 into a teapot 54 supported on a stand 9, this stand being lowered by the weight of the delivered water to out off the gas supply through the valve 25, Fig. 3, to the burner when the tea is made. The valve 25 is carried by a rod 24 which passes through a flexible diaphragm 22 and is attached to an armature 31 of an electromagnetic coil 28. At a predetermined time the coil 28 is energized and the armature 31 is attached to open the valve 25 to supply gas to the burner 3. The armature 31 has a bent end 38 with a slot 39 of which engages the end of the armature 42 of a coil 29. By the action of a spring 57 the armature 42 secures the arm 38 in the raised position to maintain the gas valve open until the weight of the water added to the teapot lowers the rod 10 and moves the contact 18 from the contact 19 to contact 20. Current is then supplied to the coil 29 whereby the armature 42 is attracted, the spring 61 being then permitted to effect the movement of the armature to close the valve 25. The wiring for the apparatus is shown in Fig. 7. The battery 21 is in circuit with contact studs 47, 49 of an alarm clock, a switch 48, contact 18 of the movable support 10, and coil 28. When the clock or other timing device closes the circuit current passes by way of contact studs 47, 49 and spring contacts 19, 44. The attraction of the armature 31 serves to effect the opening of the gas valve 25, in which position it is held by the movement of the armature 42, as previously described, the armature 31 moving thei contact 32 from contact 33 to contact 34 to de-energize the coil 28. The downward movement of the teapot to move the contact 18 from contact 19 to contact 20 causes the coil 29 to be energized, the gas valve to be closed and the electric bell 36 or lamp to be sounded or lit. The contacts are re-set when the teapot is removed. Hand operation of the support 10 is provided by a push-button 14 and lever 11, Fig. 1.
Patent GB-519646-A (GB)
Title: Improvements in or relating to fuel pumps
IPC: F02M59/00
Filed: 1938-09-26
Abstract: 519,646. Fuel pumps. HANDELSAKTIEBOLAGET VIDAR. Sept. 26, 1938, No. 28046. Convention date, Sept. 28, 1937. [Class 102 (i)] [Also in Group XXVII] In a fuel pump for internal combustion engines in which fuel is separately delivered to different outlets from a common chamber at different times during each delivery stroke of the plunger or the like, and in which some of the engine cylinders are disconnected during low and/or idle running, the pump is provided with by-pass pipes which may be selectively opened to by-pass fuel from the pressure lines not required. In the form shown, fuel passes through a central inlet 8 into the pump chamber 23 and is delivered by plunger 3 through delivery ports 10aa, 10bb, passages 10a, 10b, spring-loaded valves 13a, 13b with compensating chambers 43, 44, to outlets 14a, 14b. There are four such deliveries, and at the same level as the four delivery ports are four relief ports 20a, 20b, 20c, 20d leading to a common overflow 30. The pump cylinder 2 is also provided with auxiliary overflow ports 20bb, 20dd communicating with a common auxiliary overflow passage 30c controlled by a plug valve 30d. When the latter is opened, two of the four engine cylinders will receive no fuel, independently of the rotational setting of the plunger 3 by a control rack. Fig. 6 shows the valve 30d controlled by a solenoid 71a which is energized when a throttle valve 72 in the engine air intake 73 is closed. by hand or automatically as by a governor. In one modification, a vacuum automatic control is provided, and in another the fuel is returned from the overflow passage to the suction line 8.