baber/WOPTO huggingface dataset:
Patent GB-923087-A (GB)
Title: Improvements in or relating to hobs
IPC: B23F21/16
Filed: 1959-04-09
Abstract: 923,087. Milling-cutters. HERBERT LINDNER G.m.b.H. April 9, 1959 [April 9, 1958], No. 12093/59. Class 83 (3). [Also in Group XXIII] A hob comprises teeth which have relieved flanks formed by involute surfaces, the pitch of which differs from that of the flanks of teeth of an unrelieved hob, the cutting edges being formed by a generatrix of the flanks, the generatrix being tangential to a base circle different from that of an unrelieved hob, the pitch angle of the basic circle of the unrelieved cutter being maintained. Thus the cutting edges of the teeth are located for one tooth flank on a basic circle of greater diameter than that of the basic circle of the unrelieved cutter while for the opposite flank it is of lesser diameter. In Fig. 2, the flutes are axial, the cutting edges 1a-4a cut one flank and the edges 1b-4b cut the other flank. Alternatively, the hob may be formed as in Fig. 4, to cut one flank as it rotates in one direction and is then rotated in the opposite direction to cut the other flank, the flutes then being helical. If all the teeth of the hob are undercut, the teeth all have the same length Z3, Fig. 5, so that more teeth can be provided than in a hob which cuts both flanks simultaneously. The flutes are produced by end mills, or sintered multi-grain diamond cones, St, Fig. 6, the cone being pivoted so that the generating line coincides with the generatrix E of the hob. The teeth Z4, Z5, Z6 may be mounted on strips LK sliding into grooves in the body HK. The flanks of the teeth are first ground without relief. All the teeth are then removed except for those on one strip which are then relieved.
Patent GB-437026-A (GB)
Title: Improvements in and relating to lock or dock gates or caissons
IPC: E02B7/20
Filed: 1934-04-23
Abstract: 437,026. Dock gates. BOX, E., Lindisfarne, Stoneyhurst Road, Gosforth, Newcastleon-Tyne. April 23, 1934, No. 12112. [Class 68 (ii)] Lock and dock gates, caisson gates, and otner water gates are made with vertical water excluding edges fitted with adjustable wedgeshaped sealing strips. The Figure shows cross-sections of a gate D<1> near its lower edge, and of a gate D near its upper edge. Channels t, t<1> are formed on the meeting edges of the gates, and are fitted with wedges h of timber, which may be adjusted vertically by means of screw-and-pinion gearing arranged beneath the top decks of the gates. The wedges may consist each of a steel box or trough-like backing with a timber facing w ; lubricating-pipes may be fitted. Similar devices may be fitted on the edges of a caisson gate.
Patent GB-887721-A (GB)
Title: Cyclopentanophenanthrene derivatives
IPC: C07J1/00
Filed: 1958-04-17
Abstract: The invention comprises 19-androstenes of the formula <FORM:0887721/IV (b)/1> wherein R is an alkyl, alkenyl or alkinyl group containing not more than six carbon atoms, R1 and R2 each represent hydrogen or a hydrocarbon carboxylic acyl group of from 2-12 carbons atoms, and their preparation from the corresponding 17a -alkyl or alkinyl derivative of 19-nor-D 4-androsten-17b -ol-3-one by enol esterification, selective hydrolysis of the enol ester group and reduction of the D 3 bond with an alkali metal double hydride, preferably with sodium borohydride and optionally saponifying 17-ester group, hydrogenating a 17-alkinyl group to the corresponding 17-alkenyl or alkyl group and acylating either or both the 3- and 17-hydroxy groups.  The enol esterification is effected with isopropenyl acetate or with an acid anhydride and an acid catalyst, and specified acyl groups are acetyl, propinyl, butyroyl, hemisuccinyl, caproyl, benzoyl, trimethylacetyl, phenoxyacetyl, phenoxypropionyl, phenylpropionyl, cyclopentylpropionyl, dichlorophenoxyacetyl, and b -chloropropionyl.  The saponification process is preferably conducted with lithium aluminium hydride.  In examples: (1) 17a -methyl-19-nor-testosterone is refluxed with acetic anhydride and pyridine, the resulting acetate heated with isopropenyl acetate and H2SO4 and the diacetate of 17a -methyl-19-nor-D 3,5-androstadiene 3b ,17b -diol reduced with NaBH4 and saponified with ethereal LiAlH4 to 17a -methyl-19-nor-D 5-androstene-3b ,17b -diol, characterised (2) to (4) as its 3-acetate, 3,17-diacetate, and 3-propionate-17-acetate; (5) 17a -ethinyl-19-nortestosterone treated as in (1) gives 17a -ethinyl-19-nor-D 5 androstene-3b ,17b -diol which (6) is hydrogenated over Pd on CaCO3 to the 17a -vinyl compound and then over Pd on charcoal to 17a  - ethyl - 19 - nor - D 5 - androstene - 3b , 17b  - diol; (8) and (9) the 17-acetate of the 17a -ethinyl compound is similarly reduced in two stages; (10) 17a -ethinyl-19-nor-testosterone is heated with acetic anhydride and p-toluene sulphonic acid giving the diacetate of 17a -ethinyl-19-nor-D 3,5-androstadiene-3,17b -diol; (11) and (12), the dipropionate is likewise obtained and converted to the 17-propionate of 17a -ethinyl-19-nor-D 5-androstene-3b ,17b -diol, and its 17-vinyl and 17-ethyl analogues; (13) to (15) and (19) illustrate similar reactions with 17a -propionyl-, and 17a -butinyl compounds; (16) to (18) 17a -ethinyl-19-nor-D 5 androstene-3b ,17b -diol is characterised as its 3-acetate, 3,17-diacetate, and 3-propionate-17-acetate.
Patent GB-786525-A (GB)
Title: Consumable electrodes for arc melting chemically reactive metals
IPC: H05B7/07
Filed: 1955-04-28
Abstract: 786,525. Electric heating. REM-CRU TITANIUM, Inc. April 28, 1955 [May 10, 1954], No. 12276/55. Class 39(3) [Also in Group XXII] A consumable electrode for use in arc-melting highly reactive metals such as titanium, zirconium and their alloys in an inert atmosphere in a water-cooled copper crucible comprises a central core of solid metal, e.g. consisting of a forged or rolled bar of melt-cast titanium or of an alloying metal such as molybdenum, chromium, tungsten, manganese or aluminium, on or about which are assembled one or more metallic subelements made separately from the core and comprising discrete metallic particles bonded together. The sub-elements comprise pressed briquets of comminuted metals such as titanium or zirconium sponge or mixtures thereof with alloying metal chips. The core may be wrought or cast or formed by powder metallurgy and projects at both ends beyond the briquets, at one end for suspension and at the other end for striking the arc. The briquets may be pressed into cylindrical, cubical or other polygonal shape, centrally drilled and assembled in stacked relation on the core, to which they are tack welded especially at top and bottom of the assembly. The briquets may be pressed at 20-100 tons per square inch into elongated slabs of rectangular, semi-cylindrical or other contour and assembled lengthwise about a core of rectangular section, or grooved lengthwise for assembly about a core of circular section, and the assembly is integrated by riveting, welding or wiring. The briquets may be pressed into short cylinders 30 clustered in tiers about the core 29 and secured to one another and to the core by tack welding, strapping or wiring. The briquets may be pressed from titanium or zirconium sponge, flakes, powder or chips with chips of alloying metal. The core may be a rolled or forged agglomerate of coarse scrap or a continuous aluminium pipe.
Patent GB-104637-A (GB)
Title: Sandwasher for Washing Fine Sand.
Inventor: SOUTHALL JOSEPH
IPC: B03B5/56
Filed: 1916-08-30
Abstract: 104,637. Southall, J. Aug. 30, 1916. Stationary - vessel washing - apparatus; upward current classifiers.-Fine sand to be washed is fed into stagnant water in a vessel B through a central conduit A terminating at C towards the bottom of the vessel B. The sand is passed along a pipe G provided with agitators L and fed with water at the end H, the dirty water passing up channels F at the sides of the conduit A and overflowing at the level D. The sand is discharged by an elevator K, preferably arranged vertically.
Patent GB-574477-A (GB)
Title: Manufacture of chlorinated p-phenylene diacetic acids
IPC: C07C57/58
Filed: 1944-06-28
Abstract: Nuclear chlorinated p-phenylene diacetic acids containing up to 3 chlorine atoms in the nucleus are prepared by reacting the corresponding nuclear chlorinated p-xylylene dichlorides with an alkali metal cyanide so as to replace the side chain chlorine atoms by cyano groups, and subsequently hydrolysing the resulting nuclear chlorinated p-xylylene dicyanides so as to produce the corresponding nuclear chlorinated p-phenylene diacetic acids.  The chlorine substituted p-xylylene dichlorides employed as starting materials are: 2-chloro-p-xylylene dichloride, 2.3-dichloro-p-xylylene dichloride, 2.5-dichloro-p-xylylene dichloride, and 2.3.6-trichloro-p-xylylene dichloride.  They may be prepared according to the method described in Specification 582,258 as open to inspection under Sect. 91.  The corresponding dicyanides may be prepared by reacting the above-mentioned xylylene dichlorides with sodium or potassium cyanide, preferably in the presence of a solvent or partial solvent for the alkali metal cyanide and organic compounds such as a 75 per cent aqueous ethanol solution, the reaction mixture being alkaline.  The hydrolysis step may be carried out under acid or alkaline conditions.  Thus the cyanide may be heated with aqueous caustic soda until ammonia is no longer liberated and the diacetic acid liberated from the solution by addition of a mineral acid. Alternatively, the dicyanide may be hydrolysed in an acidic solution as with concentrated phosphoric acid, at a temperature of 200 DEG  C. to 250 DEG  C. preferably for from 4 to 5 hours; in this case the diacetic acid is obtained direct, the ammonium phosphate formed being removed by aqueous washing.  The nuclear chlorinated phenylene diacetic acids are characterized by decreased inflammability, lessened water-sensitivity and elevated melting and boiling points; they are valuable as intermediates in the preparation of esters, polyesters, amides and polyamides.  The esters may be used as plasticisers and the acids as intermediates in the formation of organic fibres.  The nuclear chlorine is in a chemically inert and stable form.  In examples: (1) 2-chloro-p-xylylene dichloride is reacted with sodium cyanide to give 2-chloro-p-xylylene dicyanide which is hydrolysed to yield 2-chloro-p-phenylene diacetic acid; (2) 2.5-dichloro-p-xylylene dichloride is reacted as in (1) and the resulting 2.5-dichloro-p-xylylene dicyanide hydrolysed, yielding 2.5-dichloro-p-phenylene diacetic acid.
Patent GB-304085-A (GB)
Title: Improvements in or relating to garters and hose suspenders
IPC: A41F11/16
Filed: 1928-04-27
Abstract: 304,085. Boucher, M. I. April 27. 1928. Garters; socksuspenders.-A garter convertible into a hose - suspender comprises a leg band 1 having at one end a fastning hook or stud 4 and at the other a co-operating ring 3. The elements 6, 10 of a sock grip are carried by elastic strips 7, 11 respectively secured to opposite ends of a pad 8 formed with a central hole 9. To use the. garter 1 as a suspender, the element 10 and strip 11 are passed through the ring 3 and then through the hole 9, as shown.
Patent GB-1440031-A (GB)
Title: Joints
IPC: F16C11/06
Filed: 1974-03-20
Abstract: 1440031 Ball-and-socket joints TRW INC 20 March 1974 [16 April 1973] 12424/74 Heading E2F In a ball and socket joint a housing 12 provides a seat for a ball 17 carried by a shank 18 extending from the housing, a spring- loaded plastics bearing 14 bears against the underside of the ball 17 and the bearing is provided with a lubricating stem 30 which projects through a threaded hole 33 into which a lubricant fitting 16 is screwed. Removal of the fitting 16 enables the extent of wear of the bearing 14 to be ascertained.
Patent GB-623513-A (GB)
Title: Improvements in and relating to automatic electrical circuit breakers
IPC: H01H73/44
Filed: 1947-05-08
Abstract: 623,513. Two-part couplings. COMBI, A. May 8, 1947, No. 12448. [Class 38 (i)] [Also in Group XXXVII] An automatic circuit-breaker, intended to replace a fuse, is carried on one side of an insulating base g, on the other side of which are mounted resilient blades u adapted to engage terminal blocks of a fuse base.
Patent GB-271075-A (GB)
Title: Improvements in machine for mixing rubber and like material
IPC: B29B7/24
Filed: 1927-05-09
Abstract: 271,075. Farrel Foundry & Machine Co., (Assignees of Lewis, R. C.). May 17, 1926, [Convention date]. Feeding-devices.-In a machine for treating rubber &c. comprising a rotor working within a mixing chamber, the chamber is provided with a closure in the form of a plunger which forces the charge into the chamber and is operated by power, automatic means being provided for cutting off the power when the closure is in either its upper or lower limiting positions. In the form shown the closure works in a charging stack and is raised and lowered by worm-gear operated from an electric motor, the circuit of which is broken when the closure reaches its upper or lower positions. The closure may be kept at a desired temperature by circulating fluid led thereto through pipes with telescopic joints. The closure or plunger 23, Fig. 4, slides in a stack 22 which can be charged by a side hopper 25 closed by a pivoted cover 27. The plunger is operated through a pin 36, the spherical head of which rides between members 34. The pin is connected with a crosshead 37 riding in a casing 38 and operated through a worm and screw thread from an electric motor. As shown in Fig. 10, the crosshead is guided by means of pairs of blocks 48, 49 riding in vertical guides 41 in the casing 38 and mounted on a cross-pin 50. The motor drives the worm 72 through reduction gearing and its circuit is controlled by a pin on the plunger riding in a groove 86 in the stack and engaging fingers 104 at the ton and bottom of its stroke to open the motor circuit. For maintaining the temperature during mixing the bottom of the plunger is provided with passages 112, 113, Fig. 9, for the circulation of fluid, which passages are connected to tubular members 114, 115, in which telescopic tubes 120, 121 connected with a fixed fluid supply. The side faces of the plunger are slightly opened from the stack, the plunger being provided with scraper plates 126 127 round the edges of the base, and with guides engaging the corners at its upper end. Specification 271,070 is referred to.
Patent GB-941266-A (GB)
Title: Apparatus for the after-atomization of fuel condensates in the suction conduit of internal combustion engines
IPC: F02M23/03
Filed: 1961-04-07
Abstract: 941,266. Auxiliary air admission. C. GALIC. April 7, 1961 [April 9, 1960; Sept. 1, 1960; Feb. 2, 1961], No. 12619/61. Heading F1B. In a mixture suction conduit 33, Fig. 1, there is provided a mixing chamber 38a, Fig. 3, which admits additional air for the afteratomization of the condensed fuel passing along the inner wall of the suction conduit and has condensate and collecting ribs 57 which extend into the region of inlet opening. With the engine idling and the carburetter throttle valve closed, additional air is admitted through a nozzle 47 mounted in the casing 42 downstream of throttle valve 24. Opening of the carburetter throttle valve 16 causes corresponding opening of throttle valve 24 to admit additional air through a filter 43, casing 42, flexible conduit 40 to the inlet leading to a slot 52a. An idling jet passage 58 controlled by a regulating screw 60 is positioned to direct air on to slot edge 59. Fuel condensate flowing along the inner wall of the suction line 33 is atomized by air emerging from the slot and is mixed with the main fuel charge passing into inlet passage 54. The length of slot 52a is not more than <SP>1</SP>/ 3  of the circumference of the mixing chamber, and in a modification can be aligned with a circumferential rib forming a breaking edge which occupies part of the periphery of the mixing chamber. Breaking edges may also be positioned longitudinally or staggered along the circumference of the mixing chamber.
Patent GB-187941-A (GB)
Title: Improvements in supports for inverted incandescent gas mantles
Filed: 1922-05-04
Abstract: 187,941. Radium Gl³hk÷rper Fabrik Ges. Oct. 25, 1921, [Convention date]. No Patent granted (Sealing fee not paid). Mantle supports.-A gas mantle support consists of a stamped sheet metal or other annular disc 1, provided with forked projections 2 and notches 3, 4. The inwardly projecting lugs, as shown in dotted lines in Fig. 1, on a mantle ring 9 are broken off and the disc 1 is inserted in the ring, the projections 2 being bent over the edge of the ring. The disc is then fixed to a burner head, provided with ridgeshaped projections, adapted to pass through the notches 3 and, on turning and lowering the mantle, to engage in the slots 4. In a modification, as shown in Fig. 3, the disc is provided with forked projections 5, adapted to be placed over ridge-shaped projections 7 or to be inserted in U-shaped projections on the burner head. The disc may be provided with a stiffening rib 6, extending upwardly or downwardly.
Patent GB-474757-A (GB)
Title: Improvements in aluminium alloys and the production thereof
IPC: C22C21/12
Filed: 1936-05-05
Abstract: A small proportion of niobium is added to aluminium alloys, particularly those containing copper or nickel or both, with or without magnesium, and with or without silicon and iron.  The alloys may contain 0,5-12 per cent of copper, 0,5-5 per cent of nickel, 0,1-3 per cent of magnesium, 0,2-2,5 per cent of silicon, 0,2-2 per cent of iron, and 0,05-1 per cent of niobium.  The niobium may be introduced in the form of an aluminium-niobium alloy made from ferro-niobium by melting with aluminium to form an alloy containing 5 per cent of iron and 5 per cent of niobium, other preliminary alloys employed being aluminium-nickel with 20 per cent of nickel, aluminium-iron with 10 per cent of iron, aluminium-copper with 50 per cent of copper, and aluminium-silicon with 20 per cent of silicon. Magnesium is added as metal.  Forgings of the alloy may be heat-treated for example at 530 DEG  C. for 4 hours, quenched, reheated at 165 DEG  C. for 16 hours, and quenched.
Patent GB-742781-A (GB)
Title: A semi-conductor system for the control of electric currents
IPC: H01L29/00
Filed: 1951-05-30
Abstract: 742,781. Semiconductor devices. LICENTIA PATENT - VERWALTUNGS - GES. May 30, 1951 [June 13, 1949], No. 12713/51. Class 37. An electric control device comprises a semiconductor layer 4 of one conductivitytype having two spaced ohmic electrodes 2 and 3, and a control electrode 5, 6 of opposite conductivity type, the arrangement being such that the PN junction is reverse biased, and the voltage applied to control electrode produces a space charge layer of variable depth to control the flow of current between ohmic electrodes 2 and 3 for modulation or amplification purposes. The semiconductor layer may be evaporated, sprayed or printed upon a glass or quartz base 1 as shown in Fig. 1. More than one control electrode may be provided for multi-signal control or additional ohmic electrodes 3, 31 (Fig. 6), and control electrodes 5, 6, 5, 6<SP>1</SP> may be provided giving separately controllable current paths. As shown in Fig. 9, the control electrode may consist of several separate sections connected in parallel and extending across the main semiconductor layer. The electrodes may be arranged as a series of annular rings. Several layers of semiconductor, each having ohmic and control electrodes may be applied directly one upon the other (Fig. 10, not shown) and operated in parallel to enable larger currents to be controlled. The size of the ohmic contacts may be adjusted relative to each other so that any small rectifying effect existing between these electrodes is eliminated. The N-type semiconductor may be provided by germanium with nitrogen, arsenic, phosphorus or antimony as impurity, and the P-type material by silicon with boron and/or oxygen as impurity, or by selenium with halogens as impurity. Alternatively, the P-type region may be provided by conversion of a zone of an N-type layer by applying a voltage, or by diffusion of acceptor impurity. The resistivity of the control electrode zone should be higher than that of the main semiconductor layer. The semiconductor may be made extra thin in the zone adjacent the control electrode by controlling the evaporation process or by a subsequent mechanical operation.
Patent GB-1409593-A (GB)
Title: Method for directly preparing a sulphate or sulphates from exhaust gases containing so2 gas
IPC: B01D53/50
Filed: 1973-03-16
Abstract: 1409593 Sulphur dioxide from gases OSAKA KOHAI CO Ltd 16 March 1973 [18 March 1972] 12734/73 Heading C1A SO 2  is removed from O 2 -containing waste gases and Ca or Mg sulphate prepared by contacting the gases in an alkaline region with an aqueous liquor containing a Ca- and/or Mg-containing compound and a Mn (II) salt in an amount sufficient to form MnO 2  with dissolved O 2  thereby forming a sulphite, contacting the resultant liquor in an acidic region with further waste gases to oxidize the sulphite to sulphate with the aid of O 2  in the waste gases. The Ca or Mg compound may be CaCO 3 , Ca(OH) 2 , Mg(OH) 2 , MgCO 3  and/or dolomite. The Mn (II) salt may be MnCl 2  or MnSO 4  in an amount of at least 0À00077 mol/l. Waste gases containing O 2  and 0À15% by vol. SO 2  may be scrubbed countercurrently by a slurry of Ca(OH) 2  and MnCl 2  sprayed via 10 into the alkaline region of tower 3. The CaSO 3 -containing liquor formed passes into the acidic tank 2 where the liquor is mixed with the incoming SO 2  and O 2 -containing waste gas which oxidizes the sulphite into sulphate. The acidic liquor is then passed to separator 6 to remove the solid CaSO 4 , the mother liquor then being recycled via make-up tank 7 to spray heads 10. MgSO 4  may be removed from the acidic liquor by neutralizing with Mg(OH) 2 , scrubbing with SO 2  gases and then cooling the resulting liquor.
Patent GB-373747-A (GB)
Title: Improvements relating to parallel slide valves
IPC: F16K3/02
Filed: 1931-04-30
Abstract: 373,747. Valve components. VICTORY VALVES, Ltd., BOLTON, E. A., and GRAY, T. F., Adswood, Stockport. April 30, 1931, No. 12741. [Class 135.] Closure members, sliding.-Parallel slide valves have their valve discs a pressed apart against their seatings by volute springs disposed on central bosses of pads d which have rounded contact faces, as shown. The springs are enclosed in recesses in boss-like projections of the discs and are secured by peripheral projections d<1> on the pads which engage, bayonetjoint wise, through gaps in flanges on the bosslike projections. The strap or eye f carrying the valve discs is provided with two pivotal members h, i to facilitate assembly, the two parts being closed in and secured by a nut or cap screwing on the parts m when they meet. The meeting parts are formed with recesses to retain the head of a split-pin which passes through the end of the nut or cap to secure the same in position. This arrangement enables the valve discs to be released for removal through an opening in the casing, said opening being normally closed by an internal cover. Specification 346,286 is referred to in the Provisional Specification.
Patent GB-596604-A (GB)
Title: Improvements in dynamo electric machines
IPC: H02K9/18
Filed: 1945-05-23
Abstract: 5 9 6, 6 0 4. Cooling dynamo-electric machines. PENSABENE, N. May 23, 1945, No. 12821. Addition to 490,062. [Class 35] In an enclosed machine with the internal air circulated over a cooler as claimed in the parent Specification, fan blades B are secured to the conductor ends in such manner that they also serve as current leads to the commutator segments.