baber/WOPTO huggingface dataset:
Patent GB-745334-A (GB)
Title: Improvements in or relating to the low temperature separation of gases
Inventor: SCHILLING CLARENCE JOHN
IPC: F25J3/04
Filed: 1953-12-31
Abstract: 745,334. Low temperature separation of air. AIR PRODUCTS, Inc. Dec. 31, 1953, No. 36272/53. 'Class 8(2). In an air rectification process deriming of a heat interchanger 16 having interchangeable nitrogen and compressed air passages 15, 15A is assisted by a closed cycle of highly volatile gas e.g., nitrogen traversing a secondary passage 54 of the interchanger 16, ducts 57, 61, a heat interchanger 50 traversed by reversely flowing cold nitrogen from the high pressure column 20 and a duct 62 leading back to the secondary passage 54. As shown recycling of the nitrogen is effected by a blower 59 and the heat of compression is absorbed by nitrogen from the compressed air inlet end of interchanger 16 traversing an interchanger 58. Warmed high pressure nitrogen leaving the interchanger 50 is expanded in an engine 52 to the pressure of the low pressure column 28 and is mixed with nitrogen in a duct 33 passing to the interchanger 16. Of the compressed air being rectified 79-80 per cent is cooled by returning nitrogen in interchanger 16 and the remainder is cooled by oxygen leaving column 28 by a duct 45 and traversing a heat interchanger 44 and a compressor 63 to an outlet 64. In a modification the recycled nitrogen traverses secondary passages arranged in parallel in both the nitrogen and oxygen interchangers, and after being cooled by high pressure nitrogen it is further cooled in an expansion engine before entering the cold ends of the secondary passages. In a further modification the secondary passage through which the nitrogen is recycled is confined to the cold end of a main heat interchanger having intercrangeable air and nitrogen paths and a central non-interchangeable oxygen path. Specification 469,943 is referred to.
Patent GB-1293328-A (GB)
Title: Power steering mechanism
IPC: B62D5/22
Filed: 1971-08-02
Abstract: 1293328 Power steering BENDIX CORP 2 Aug 1971 [17 Aug 1970] 36282/71 Heading B7H  In a power steering mechanism in which a valve means 34 selectively admits pressurized fluid into chambers 20, 22 on either side of a double acting piston 18 connected with a rack 24 which is moved by a pinion 30, a sleeve 26 coaxial with said rack is releasably coupled thereto when the rack moves in one direction with reference to a point and during its return to that point but the rack is released to move, relative to the sleeve 26, in the opposite direction from said point. As shown in Fig. 2 the rack 24 has an abutment 54 which engages the sleeve 26 on movement to the right with simultaneous admission of pressure fluid via rotary valve 34 to the chamber 20, and at this time rack recess 56 is positioned over opening 50 in sleeve 26 so that ball 52, which is urged up the ramp 46 and into groove 44 of the bore 14, projects into recess 56 thereby coupling the rack 24 with sleeve 26. On return of the rack to the left, accompanied by admission of pressure fluid to chamber 22, the rack and sleeve remain coupled until the point at which ball 52 falls into the bore recess 42 to release the rack 24 from the sleeve which abuts against the bore end. The ball 52 may alternatively comprise a roller.
Patent GB-1242085-A (GB)
Title: A recording device
IPC: H01L21/263
Filed: 1968-07-30
Abstract: 1,242,085. Semi-conductor record. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 30 July, 1968 [18 Aug., 1967], No. 36370/68. Heading G5R. [Also in Division H1] Deep level impurities are provided in a semiconducting or insulating body 1 in a pattern 2 corresponding to a signal to be recorded. Elastic waves are generated through the body 1 in suitable phase relationship, e.g. from piezoelectric crystals 3, 3<SP>1</SP>, and the electrical resistance between electrodes D, E on the upper and lower faces of the body 1 decreases when the intersection point of the two wavefronts coincides with part of the pattern 2. The output from electrodes D, E is thus dependent upon the recorded signal, which may be electrical, optical or acoustic in nature. As shown the body 1 is of Si having therein a pattern 2 formed by implantation of Cu ions, The pattern may be defined by scanning the ion beam over a photo-etched mask and Subsequently heating to produce diffusion. Alternative semi-conductor materials for the body 1 are Ge, GaP, GaAs, InAs, A1N, LiNbO 3 , CdS, ZnS, ZnSe, CdSe, ZnO and SiC. The piezoelectric crystals 3, 3<SP>1</SP>, which may be of BaTiO 3 , quartz, CdS or GaAs, carry electrodes 4, 5, 4<SP>1</SP>, 5<SP>1</SP>, and absorbing plates 6, 6<SP>1</SP>, 6<SP>11</SP>, 6<SP>111</SP> are provided to absorb reflected elastic waves. This absorption may also be achieved by suitable shaping of the body 1.
Patent GB-996768-A (GB)
Title: Improvements in or relating to roller grinding mills
Inventor: HANDSCOMBE FRANK LESLIE
IPC: B02C15/00
Filed: 1962-09-25
Abstract: 996,768. Rollers. INTERNATIONAL COMBUSTION (HOLDINGS) Ltd. Sept. 24, 1963 [Sept. 25, 1962], No. 36438/62. Heading F2U. [Also in Division B2] An edge-runner mill comprises a horizontal rotatable table 1, Fig. 1, and two or more grinding rollers arranged for rotation about axes inclined to the table surface each of the rollers being formed at least partially of a number of removable segments 7. The roller 7 has a shaft 2 with bearings 3, 4 for a head 5 which has a flange 6 and the wearing surface is formed by the segments 7, each of which has an inwardly directed shoulder 8 which lies along the face 9 of the flange 6. The inner face 10 of each segment 7 is flat and the faces abut the flats of an octagonal surface adjacent the root of the flange 6, the segments being bolted to the flange by bolts 11, whose heads are in recesses 12 in the segments. Each segment also has an arcuate flange 13 mating with a corresponding surface on an annular, truncated-conical, retaining member 14, and secured by bolts 15 which pass through the segments 7 and the flange 6. For each segment 7 there are two bolts 11 with one bolt 15 between them. In a second embodiment, the head 5 has a flange 17, Fig. 3, around which segments 18 are laid with their arcuate inner walls in contact with the circumferential wall of the flange. The segments are secured to the flange against axial movement by an annular conical retaining member 22 and locking elements 23, which each have a nose portion engaging a groove in the rear end face 20 of each segment to hold it against the flange. The retaining member 22 is secured to the flange 17 by screws, and the locking elements 23 are bolted by bolts 26 passing through the elements 23, the flange 17 and the member 22. By. releasing a bolt 26 and removing a locking element 23, a single segment may be lifted away from the flange 17 for replacement. The locking elements 23 may alternatively be replaced by a single onepiece locking, member, and the retaining member 22 may be formed in segments integral with the segments 18, so that the locking member 23 can be dispensed with.
Patent GB-630328-A (GB)
Title: Improvements in or relating to centrifugal casting of pipe
IPC: B22D13/10
Filed: 1946-12-10
Abstract: 630,328. Centrifugal casting machines; moulds. KUNIANSKY, M. Dec. 10, 1946, No. 36490. Convention date, July 8, 1943. [Class 83 (i)] To improve the cooling of a centrifugal mould arranged in a non-rotating water-box the mould 4, Figs. 6 and 8, is surrounded by a sleeve 15 and impellers are arranged to circulate fluid through the intervening space. The socket end of the mould has a flange 7 and sleeve 71, this carrying a gear-ring 10 for driving and having a bearing 8 to prevent axial movement in the box 1. The spigot end has a flange 11 and sleeve 12, this and the sleeve 7<SP>1</SP> having packing 13 to prevent leakage. The sleeve 15 is fixed to the flange 7 and is freely supported by its lugs 18 which can slide axially on the spigot end of the mould. Intermediate its ends the mould, which is thin-walled to facilitate cooling, is supported by radial pins 20, Fig. 1, in the sleeve 15 and this is supported in the box 1 by rollers 21. Each pin 20 is slidable in a threaded bush 27, Fig. 12, and its head 24 is drawn against spring washers 33 by a lockable nut 28 until the loading is equal to that required to prevent the mould from warping in use. The bush is then adjusted until the head 24 engages the cold mould and is so secured by a key 34 and wire 36. The sleeve 15 has the oppositely-inclined inlet and outlet ports 40, 41, Fig. 1, to circulate the water, the action being assisted by radial baffles 42. Fig. 4 shows modified outlet ports 44. At the end 16, Fig. 6, of the sleeve 15, an adjustable ring 46 is provided to vary the discharge from ports 45 due to centrifugal force. The ring 46 can be adjusted by the operator between casting operations by a tool inserted through holes 50 to engage screws 47. To increase discharge at the spigot end, an adjustable ring 52, mounted on the sleeve 15, carries inclined vanes 54 and the gap 55, and thus the discharge, increases as the mould expands when heated. Thus, in addition to the flow in and out of the intermediate ports 40, 41, there is a flow in the sleeve 15 from the middle to the ends.
Patent GB-1043150-A (GB)
Title: Dichlorophenyl-acetic acid esters and mixtures thereof and compositions containing them for suppressing plant growth
Inventor: SASSE KLAUS
IPC: C07C57/58
Filed: 1965-08-25
Abstract: The invention relates to dichlorophenyl-acetic acid esters of the general formula <FORM:1043150/C2/1> wherein one of X1 and Y1 is a hydrogen atom and the other is a chlorine atom and R1 is an unsaturated or saturated, unsubstituted or substituted, straight, branched or cyclic aliphatic radical which when Y1 is chlorine contains 2 or more C atoms.  The invention also relates to a mixture of esters as above with R1 not restricted to more than 2 C atoms containing up to 80% by weight of the 3,4-dichloro compound. Mixtures of 2,3- and 3,4-dichlorophenyl-acetic acid esters claimed are the butyl, methyl, ethyl, isopropyl.  The esters may be prepared by reacting 2,3-dichloro-phenylacetic acid with appropriate alcohols in the presence of acidic catalysts, such as anhydrous hydrogen chloride and concentrated sulphuric acid or by preparing from the acid, an acid chloride and reacting this with an alcohol in the presence of an acid binder.  In an example, dichloro-phenylacetic acid (containing about 25% of the 2,3-isomer) is dissolved in benzene and mixed dropwise at room temperature with thionyl chloride, and the mixture boiled under reflux and the benzene and excess thionyl chloride distilled off. The residue is dissolved in benzene and the solution treated with a mixture of hexahydro-dimethyl-aniline and butanol to yield dichloro-phenyl-acetic acid butyl ester (mixture of isomers).ALSO:Compounds for controlling plant growth comprise as active ingredient either a dichlorophenyl acetic acid ester of the general formula <FORM:1043150/A5-A6/1> wherein one of X1 and Y1 is a hydrogen atom and the other is a chlorine atom and R1 is an unsaturated or saturated, unsubstituted or substituted, straight, branched or cyclic aliphatic radical or a mixture of these esters preferably containing up to 80% by weight of the 3,4-isoner in admixture with a solid or liquid diluent or carrier.  The composition may be in the form of solutions, emulsions, suspensions, powders, pastes and granules.  Many solvents, solid carriers, emulsifiers and dispersing agents are specified.  Many active ingredients are exemplified.
Patent GB-1279898-A (GB)
Title: Improvements in or relating to telecommunications systems
IPC: H04M3/56
Filed: 1970-07-29
Abstract: 1279898 Automatic exchange systems SIEMENS AG 29 July 1970 [30 July 1969] 36658/70 Heading H4K Subscribers connected by delta-modulated time-division-multiplex channels are conferenced by an arrangement which determines which channel is active with speech and connects that channel to all other channels. In the system illustrated subscribers lines AL are gated to send and receive highways MSe and MSs under control of circulating store U. Three members of a conference are gated off the highway MSs to storage devices S1, S2, S3, by respective gates Ks1, Ks2, Ks3, under control of circulating store UK. The modulations received over the gates Ks in the time slots of the respective subscribers are examined to determine that channel exhibiting the lowest frequency of alternation and a switch Kh1, Kh2, or Kh3 corresponding to that channel is operated so that the modulation stored in the corresponding one of S1, S2 and S3 is gated out to the send highway MSe in all three time slots of the subscribers. The OR -gate OG ensures that a switch Kh receives all three time slots marked out by the circulating store UK. It is suggested that the modulation received from an active channel should not be sent back on that channel. The method of determining the active channel is to convert the received #-modulation of each channel to a non- return-to-zero signal at MU, to differentiate at MD, to equalize the resulting pulses with a monostable trigger MK and to forward pulses of one polarity to an integrator MJ having a time constant of about 50 milliseconds to suit the mean syllabic frequency. The output of MJ indicates the frequency of alternation of the received signal such alternation being least for an active #-modulated channel. Voltage comparator circuits MV determine which integrator shows the lowest alternation count and select one of the switches Kh accordingly. The output of each comparator circuit MV is fed back to the input of the corresponding integrator MJ to provide a hangover time during which a channel remains connected although its activity has ceased, such feedback improving stability of the voice switching.
Patent GB-1438190-A (GB)
Title: Slipper retainer for an axial piston pump or motor
IPC: F04B1/12
Filed: 1973-08-02
Abstract: 1438190 Reciprocating pumps and motors ABEX CORP 2 Aug 1973 [16 Nov 1972] 36832/73 Heading F1A In a swash-plate pump or motor comprising a rotary cylinder block 13 with pistons 16 engaging a swash-plate 19 through slippers 18, a slipper retaining plate 26 is attached to a swash-plate support 22 by a bolt 33 engaging plate 26 via part-spherical member 29 in a part-spherical socket member 28 and a thrust bearing 27, member 28 being held against rotation of projections 31 engaging recesses 32. Bolt 33 is located in support 22 by a nut 36 retaining spring washers 35 via member 34, the assembly permitting limited axial movement of slipper plate 26. Swash-plate support 22 is mounted in an arcuate cradle 23. Block 13 is splined to a drive-shaft and screwed thereto by a bolt 39 acting via spring washers 41.
Patent GB-1422884-A (GB)
Title: Process for linearising cross-linked polymers with polyisocyanates
IPC: C08J11/28
Filed: 1973-08-03
Abstract: 1422884 Polyurethanes BAYER AG 3 Aug 1973 [5 Aug 1972] 36958/73 Heading C3R Polyurethanes which are cross-linked via allophanate and/or bivret and/or uretone imine groups may be linearized by reaction with an organic polyisocyanate in the presence of a polar solvent and at a temperature of 90‹ to 200‹ C. The resulting products are macropolyisocyanates which retain the urethane and optionally urea groups of the starting polyurethane. These macropolyisocyanates may be modified by reaction with aminoalkyl alkoxysilanes and the modified products so produced reacted with atmospheric moisture to introduce siloxane bridges into the molecule. The process may be applied to polyurethane waste, e.g. in the form of elastomers, foams, films, microporous foils and elastomer threads. Suitably the polyisocyanate is used in amounts of 0À8 to 10% by weight based on the polyurethane to be linearized. Solvents for the process include dimethylformamide, diethylformamide, dimethylacetamide, tetramethyl urea, dimethyl sulphoxide, N-methylpyrrolidone, ethylene glycol carbonate, caprolactone and butyrolactone. The aminoalkyl alkoxysiloxane may be monofunctional or bifunctional with respect to isocyanate groups. In a typical example (1) a polyurethane elastomer derived from a polyester, 4,4<SP>1</SP>-diphenylmethane diisocyanate and butane - 1,4 - diol at an NCO/OH ratio of 1À066 is linearized with isophorone diisocyanate in dimethylformamide at a temperature of 130‹ C. The resulting macropolyisocyanate is reacted with a silane of the formula to form a product which is cross-linked by atmospheric moisture by way of siloxane groups.
Patent GB-1064937-A (GB)
Title: Improvements in or relating to extruders for thermoplastic material
IPC: B29C48/46
Filed: 1964-09-09
Abstract: 1,064,937. Centripetal extrusion machines. PECO MACHINERY Ltd., R. A. BUTLER, and E. GASPAR. Sept. 3, 1965 [Sept. 9, 1964], No. 36973/64. Heading B5A. A centripetal extrusion machine, or plasticizer for use in an injection or blow-moulding machine, comprises a stator 20 and a coaxial rotor 15, whose radially extending faces 21, 16, respectively, define the plasticization zone, and a piston 27 which reciprocates axially within a cylinder 25. In operation, plasticized material is urged through passages having openings 28, 29 in piston 27 to surround tapered portion 24 of the piston, return flow being prevented by valves, e.g. ball valves 30, associated with the passages. Build-up of pressure forward of piston 27 causes it to move rearwardly against the action of a piston-and-cylinder motor (not shown) connected to stem 32, until the rear of piston 27 is adjacent surface 16, whereupon the motor is actuated to drive the piston forwardly and expel the accumulated plasticized material through nozzle 26. The rotor 15 and stator 20 are chamfered to receive a hopper 22, the machine has heaters 34 and is driven via a gear-wheel 17 coaxial with rotor 15. In a second embodiment, Fig. 2 (not shown), the rotor 15 is driven by a series of pinions 43 via a ring gear 40, each pinion being connected to an hydraulic motor which may be switched on or off independently of the other motors although all the motors are driven by pressure fluid from a common source.
Patent GB-1375626-A (GB)
IPC: H01J31/20
Filed: 1972-08-09
Abstract: 1375626 Cathode-ray display tubes HITACHI Ltd 9 Aug 1972 [11 Aug 1971] 37048/72 Heading H1D A colour picture tube includes a fluorescent screen having a plurality of phosphor units equally pitched over the entire screen and a coating of black non-luminous substance therebetween, a colour selection electrode 6 between the screen and electron gun, each phosphor unit having an area larger than the crosssectional beam area at the screen, and the phosphor units either being substantially the same size over the whole screen surface or larger at the peripheral portion (e.g. curves 10 and 9 respectively as in Fig. 2 (not shown)). Mislanding causes are considered (e.g. terrestrial magnetism or deflection field distortion), and the peripheral diameter of shadow mask perforations may be reduced by 0À04 to 0-09 mms. In a matrix tube the phosphor dot diameter may be about 40 to 60Á smaller than other tubes to increase the light absorption area by the black substance. Perforations pitches for particular perforation diameters are given. Red, green, blue phosphor dot trios are exemplified, and also grid mask type colour tubes with phosphor stripes.
Patent GB-1454526-A (GB)
Title: Prong-attached garment fastening devices with backing members
IPC: A41H37/02
Filed: 1973-08-04
Abstract: 1454526 Garment fasteners THOMAS WALKER Ltd 25 July 1974 [4 Aug 1973] 37127/73 Addition to 1334139 Heading A3H [Also in Divisions E2 and F2] The parent Specification 1334139 is modified in that the member 10 to be used on the exterior surface of the garment is part spherical and the bent over lugs 24, rather than the main body of the member, are now embossed at 26 to define pockets 27 between the lugs and inner concave surface of the member. When prongs 12 of an eye member 11 are inserted into the lug apertures 25 they are bent inwardly against the concave surface. Each lug may have two parallel embossments 26 to accommodate an eye member having two pairs of prongs.
Patent GB-305531-A (GB)
Title: Apparatus and method for cleaning molds
IPC: B29C33/72
Filed: 1928-12-15
Abstract: 305,531. Goodyear Tire & Rubber Co., (Assignees of Andrews, G. G.). Feb. 6, 1928, [Convention date]. Cleaning - apparatus. -Rubber moulds are cleaned by immersion in an alkaline solution under heat and pressure or heat alone. A pair of vessels 11 are employed which are connected by a pipe 12 fitted with a valve 13 and an exhaust valve 35. Each vessel is furnished with a steam jacket 22 and with a removable cover 33 adapted to be secured by lugs. In use, a mould 41 is placed in the bottom of the vessel and covered with cleaning solution 40, after which the cover 33 is secured in position and steam is circulated through the jacket 22 to vaporize the solution. After treatment, the valve 13 is opened to permit the solution to pass to the other vessel; this operation may be assisted by steam admitted through a pipe 27. Suitable materials for the cleaning solution are potassium and sodium hydroxide or sulphide, e.g. sodium hydroxide of 10-15 per cent strength employing a steam pressure of about 80 lbs. per sq. in.
Patent GB-365263-A (GB)
Title: Improved method of and means for varying or regulating the action of rotary aerating cones or agitators in connection with plant for aerating and circulating sewage or foul waters
IPC: C02F3/16
Filed: 1930-12-10
Abstract: 365,263. Treating sewage. MILLS, M. W., Moss Iron Works, Heywood, Lancashire, BOLTON, J., of Corporation Sewage Works, Bury, BOLTON, J. F., Moss Iron Works, Heywood, Lancashire, and AMES, R., 18, Bayswater Terrace, Kensington Gardens, London. Dec. 10, 1930, No. 37215. [Class 111.] The action of a rotary cone or agitator, used as described in Specifications 166,385, 176,957, and 225,076, [all in Class 111, Sewage &c.], for aerating sewage is varied by altering the level of the liquid in the treatment t a n k by means of an adjustable weir outlet. Fig. 1 shows apparatus comprising an aerating tank a with vertical circulating pipe b and cone agitator b<2>. The liquid leaves the tank over an adjustable weir trough d and passes through elbow pipes h, a common collecting-trough i and pipes k to one or more settling- tanks s. The trough d, Fig. 4, is supported by vertically adjustable rods e<1> and brackets d<2> pivoted to the trough. The elbow pipes hare connected to the trough by flexible and collapsable sleeves j or telescopically. The trough may be provided with adjustable side plates d<1> and with a splash-preventer n.
Patent GB-372596-A (GB)
Abstract: 372,596. Rubber paving-slabs. CALDER, W. P., 28, Farlton Road, Earlsfield, London. June 17, 1931, No. 17548. [Classes 87 (i) and 107.] A rubber paving-slab A is provided with a number of inset glass blocks B arranged with their upper faces flush with that of the rubber slab. The glass blocks extend completely through the rubber slab and are anchored in position by means of offset portions D provided at their underportions. A sheet C of rubber is also secured to the base of the slab A and is provided at each end with a moulded bar to fit into corresponding grooves in the concrete foundation. The joints between the slabs are filled with a rubber solution. The Provisional Specification describes also the substitution of vulcanite blocks for the inset glass blocks.
Patent GB-367081-A (GB)
Title: Process for improving the internal structure of metals and alloys
IPC: C21D1/40
Filed: 1930-12-10
Abstract: 367,081. Casting processes. SMITH, W., Meadowcroft, Greatham, near Stocktonon-Tees, and CALORIZING CORPORATION OF GREAT BRITAIN, Ltd., 32, Farringdon Street, London. Dec. 10, 1930, No. 37308. [Class 83 (i).] In casting metals, such as ferrous metals, copper, aluminium, zinc, and alloys thereof, an electric current, insufficient to materially retard the rate of cooling, is passed through the metal in the mould. 0À5 or 5 amperes, direct current, per square cm. may be used and the casting may be worked.