baber/WOPTO huggingface dataset:
Patent GB-1014153-A (GB)
Title: A process for the preparation of alpha,beta-unsaturated carboxylic acids
IPC: C07C51/377
Filed: 1962-09-12
Abstract: Alpha beta unsaturated carboxylic acids are made by a process which comprises reacting a ketone of the general formula <FORM:1014153/C2/1> in which one of the R1 and R2 groups is a hydrogen atom and the other a carboxylic acid racid radical, an ether group or an amino group, at most one of the groups R1 and R5 is a hydrogen atom, and the groups R3, R4 and R5, are each a hydrogen atom, an organic radical having a carbon link to a chain carbon atom or linked to a chain carbon atom through an ether group, a carboxylic acid radical or an amino group, an R6 is an alkyl group containing up to three carbon atoms and have a nonquaternary carbon linked to the carbonyl group, in particular methyl (beta-acetoxy-isopropyl) ketone, in the liquid phase and in the presence of an oxidation catalyst, especially an organic salt of manganese or copper, or a mixture thereof and preferably manganese acetate and/or copper acetate, with molecular oxygen or a molecular oxygen containing gas, and converting, by heating the carboxylic acid formed in this reaction of the general formula <FORM:1014153/C2/2> into an alpha, beta-unsaturated carboxylic acid of the general formula <FORM:1014153/C2/3> It is preferred to carry out the reaction in a solvent for example, a carboxylic acid and most preferably a mixture of acetic acid and acetic anhydride.  The starting material in the form of a ketone, of which the following are named, 1 - acetoxy - butan - 3 - one, acetoxy - 2-methyl - butan - 3 - one, methyl - 1 - dimethylamino - 2 - methyl - butan - 3 - one and 1 methoxy - 2 - methyl - butan - 3 - one, are preferably made by reacting a ketone of which the carbonyle group is linked, on one side, to an alkyl radical, having up to three carbon atoms, the carbon atom thereof linked to the carbonyl group being non-quaternary, and on the other side, to an alkyl radical having at least one hydrogen atom at the alpha carbon atom, with an aldehyde and a carboxylic acid and/or a carboxylic anhydride, or with an aldehyde and an alcohol or a primary or secondary amine, in the presence of an alkaline or weakly acid catalyst.  1-Acetoxy-2-methyl-butan-3-one is preferably prepared by reacting methyl-ethylketone with formaldehyde and either methanol in the presence of an alkaline catalyst, or with acetic acid acetic anhydride in the presence of zinc chloride as catalyst.  The examples describes the oxidation of 1-acetoxy-2-methyl-butan-3-one with a mixed copper acetate/manganese acetate catalyst in acetic acid and acetic anhydride mixture at a temperature of between 85 DEG  and 130 DEG  C. to yield methacrylic acid. Specification 404,983 is referred to.
Patent GB-367849-A (GB)
Title: A new or improved plant for cleaning or treating glaze used in the manufacture of pottery and the like
IPC: B28B11/04
Filed: 1930-11-20
Abstract: 367,849. Cleaning glaze. PODMORE, W., Consall Hall, Consall, and COLLIER, 0. G., Lyndhurst, Baddeley Green, Stoke-on- Trent. Nov. 20, 1930, No. 34898. [Class 56.] Glaze used in the manufacture of pottery is continuously cleaned and agitated by means of apparatus which removes impurities introduced into the glaze during the dipping-process. The apparatus comprises a rotary pump e which draws the glaze from a dipping-tub T and delivers it to a sifter f. After passing through the sifter, the glaze falls on to a magnetic separator d and is then returned by a pipe g to the dipping-tub. A dynamo c, for supplying electric current to the separator d, is driven by a motor b which also drives the rotary pump. Reference has been directed by the Comptroller to Specification 12284/13, [Class 87 (i), Bricks &c.].
Patent GB-1103635-A (GB)
Title: Improvements in or relating to television equipment
Inventor: COX RAYMOND SAMUEL
IPC: H04N5/10
Filed: 1965-08-16
Abstract: 1,103,635. Pulse discriminating circuits. MARCONI CO. Ltd. 18 March, 1966 [16 Aug., 1965], No. 34957/65. Heading H3P. In television equipment, pulses of predetermined duration are selected from the composite synchronizing signal by a ringing circuit fed by the differentiated composite signal and feeding an amplitude discriminator. The half-cycle period of the ringing circuit is made equal to the duration of the required pulses so that a pulse will be provided by the amplitude discriminator following the trailing edge of each required pulse. The circuit may be used to select the first of a group of equalizing pulses.
Patent GB-1442325-A (GB)
Title: Electroplating with gold and gold alloys
IPC: C25D3/62
Filed: 1972-07-26
Abstract: 1442325 Electro-deposition of gold OXY METAL FINISHING CORP 25 July 1973 [26 July 1972] 34972/72 Heading C7B Gold is electro-deposited from a bath comprising in solution gold, e.g. as an ammonium salt or as alkali metal aurocyanide; a base metal, e.g. Co or Ni; a buffer system to produce a pH of 4-6, e.g. a citric acid/citrate buffer; an aluminium salt and oxalate or formate ions.
Patent GB-777610-A (GB)
Title: Apparatus for continuous lixiviation
IPC: C13B10/10
Filed: 1954-12-03
Abstract: <PICT:0777610/III/1> <PICT:0777610/III/2> In apparatus for the counter-current lixiviation of organic materials containing oil and fat, helical blades of a screw conveyer 11 fit closely against the internal wall 1 of a cylindrical laxiviating chamber and the lixiviating liquid is passed from an inlet pipe 10 under pressure, up through this chamber to an overflow pipe 36 and into a trap 30 against the packed solid material, which is fed by way of a conduit 35 into the top of the cylinder.  On passing below the liquid supply pipe 10, the lixiviated material is compressed by a pressing worm 14, 15, which forms a seal and prevents liquid from escaping downwardly. The pressed material may be removed periodically on release of a ring 16.  Incisions 38 in the conveyer flights enable rod-shaped resistance members 37 to fitted across the lixiviating and pressing chambers to prevent rotation of the solid material unaccompanied by movement downwardly.  Extensions 40 may be provided at adjacent ends of interrupted conveyer flights.  The lixiviation chamber may be provided with a steam jacket 5 and the pressing chamber may have cooling jackets 39, 15.
Patent GB-155264-A (GB)
Title: Improved apparatus for measuring the temperature of windings in electrical machines and apparatus
IPC: G01R19/03
Filed: 1920-12-13
Abstract: 155,264. Akt.-Ges. Brown, Boveri, et Cie. Dec. 12, 1919, [Convention date]. Thermometers.-Means for measuring the temperature of the stationary winding, particularly a high-tension winding, of an electric machine or apparatus comprise a fluid-expansion thermometer connected by a pipe to an indicator, the fluid container being made wholly or in part of an electric conductor and conductively connected to the winding, and the connecting pipe being fixed and insulated in the same manner as a hightension lead. The fluid container may be placed on or between the turns of the winding or the fluid may be contained in a hollow part of the winding. In the case of enclosed apparatus such as a transformer, the connecting pipe is led out through an insulating-sleeve and the indicator is mounted in an insulated manner on the cover of the box or casing of the apparatus, and may be carried by the insulating-sleeve. Alternatively, the indicating device may be within the box and connected to an external pointer. The expansion fluid mav control a transmitter which actuates a distant measuring-apparatus.
Patent GB-1212671-A (GB)
Title: Active filters with independent control of the pole and zero locations
Inventor: FARRER WALTER
IPC: H03H11/12
Filed: 1966-08-05
Abstract: 1,212,671. Transistor amplifying circuits. W. FARRER. 5 Oct., 1967 [5 Aug., 1966], No. 35237/66. Heading H3T. A filter having independently adjustable poles and zeros comprises a twin-T resistance capacitance network R1, R2, Cl and C2, C3, R3 feeding a unity gain amplifier T1, T2 and feedback from the amplifier to the shunt arms of the twin-T. The poles and zeros are adjusted by means of potentiometers RV1, RV2. In an alternative arrangement, the connections of R1 and C2 to the potentiometer RV1 are interchanged. A number of basic units may be connected in parallel or series.
Patent GB-520930-A (GB)
Title: Improvements in and relating to signal pistols and to mountings or supports therefor on rapidly moving vehicles
IPC: F41C3/02
Filed: 1938-12-03
Abstract: 520,930. Mounting signal pistols on aircraft. WEBLEY & SCOTT, Ltd., and SMALLWOOD, H. W. Dec. 3, 1938, No. 35268. [Classes 9 (ii) and 119]  Relates to signal pistols of the Very, type having a drop-down barrel 3 and a tranverselysliding breech block 5, the pistol being detachably mounted in a discharge port 9 on aircraft or other vehicles. According to the invention, the sliding catch 14 for locking the pistol to the port engages, as by an incline 19, with the breech block 5 to partly depress it, a projection 21 on the block then locking the trigger 7. The invention is shown applied to a pistol as described in Specification 520,929 in which the barrel has a multiple-start screw thread 34 for engagement with similar threads 31 on the port, the latch 14 engaging one or the other of the multiple recesses 32 in the port.
Patent GB-467597-A (GB)
Title: Improvements in or relating to lubricating devices
IPC: F16N21/02
Filed: 1935-12-20
Abstract: 467,597. Lubricant nipples. ROGERS, J. D., and WHITELEGG & ROGERS, Ltd. Dec. 20, 1935, No. 35331. [Class 12 (iii)] A lubricant nipple with a screwed shank b and undercut head c has a ball valve d, movement of the latter away from its seating being limited by a cross bar g on a tubular plug f. The ball d may be guided by a rod fixed to the plug f and entering a bore in the ball, or, as shown, a rod e fixed to the ball may be guided in the plug f. The ball engages a conical seating in the head c and the exposed portion of the ball is machined flat with the top of the head c. The bridge piece g is formed by removing metal from opposite sides of a member f so as to form two openings m, Fig. 6.
Patent GB-167431-A (GB)
Title: Improvements in or relating to mechanical stokers
IPC: F23H11/04
Filed: 1920-12-15
Abstract: 167,431. Wade, H., (Harrington, J.). Dec. 15, 1920. Fire-bars and grates.-A grate-bar designed more particularly for use with a travelling grate of the type described in Specification 167,113 comprises an enlarged central portion 7 and forward and rear extension 8, 9 on opposite corners of the central portion, which has a lug slotted to slip on to the carrying bar of the stoker. The rear extension 9 has a narrow upper surface, and a lower outwardly extending flange 10 which when the grate bars are in place, underlies the upper surfaces of the forward extensions of two adjacent bars. forming a sinuous air passage between the bars, Fig. 5.
Patent GB-1484273-A (GB)
Title: Multi-layer photo-sensitive colour silver halide materials containing development inhibitor releasing compounds
IPC: G03C7/30
Filed: 1974-08-12
Abstract: 1484273 Photo-sensitive silver halide DIR compound containing material KONISHIROKU PHOTO INDUSTRY CO Ltd 12 Aug 1974 [16 Aug 1973] 35364/74 Heading G2C A photo-sensitive material comprises a support bearing red-, green- and blue-sensitive silver halide emulsion layer units, at least one of the layer units containing a lower and an upper layer, in order from the support, the silver halide emulsions of the upper and lower layers being sensitive to the same spectral range, the upper layer having a higher sensitivity and being capable of producing a lower maximum developed colour density on exposure and colour development than the lower layer, and at least one of the upper layer and lower layer contains a mercaptan type development inhibitor-releasing compound capable of reacting with oxidized primary aromatic amine to form a colourless compound. The material preferably contains colour couplers. The maximum developed colour density in the upper layer may be 0À2-0À7. The coupler concentration in the upper layer may be lower than that in the lower layer, e.g. not higher than 3 mole per cent based on the silver halide in the upper layer. The upper layer silver halide may comprise at least 6 mole per cent silver iodide and the lower layer silver halide may comprise at least 2 mole per cent lower silver iodide content. The coupler in the upper layer may have a lower colour-forming rate than the coupler in the lower layer. The ratio of a coloured coupler to a colourless coupler in the upper layer may be higher than that in the lower layer. The thickness of the upper layer is preferably not greater than 2Á. The mercaptan type development inhibitor releasing compound may have the Formula:- where Z completes a carboxyclic or non-metallic heterocyclic ring; Y is a group capable of forming on cleavage of the thioether linkage a mercaptan type compound having development inhibiting activity together with the S atom; A is O or NR; and R is OH or optionally substituted amino. In Examples 1-7 and 9 the upper and lower layers are magenta-forming and in the description, and in Examples 8, 10 and 11 both magenta-forming and cyan-forming units comprise upper and lower layers. In the Examples details are given of silver halide layer thickness, particle size and halide content, silver coating weight, coupler concentration and coupler combinations.
Patent GB-207717-A (GB)
Title: An improved revolving sewage distributor
IPC: C02F3/04
Filed: 1922-12-30
Abstract: 207,717. Adams, S. H. Dec. 30, 1922. Rotary apparatus.-A rotary sewage distributer is provided with an air-lock coupling comprising an annular deep trap s formed around the stationary vertical column, a pipe-like extension m of the revolving body dipping into the liquid in the trap and an enclosure k surrounding the upper part external of the extension pipe m, so that air is compressed in the space q between the liquid in the revolving body and that in the trap l. In order that air may be reintroduced into the space q, a drain hole closed by a plug s<1> is formed in the hollow of the revolving body h. In a modification, the parts d are surrounded by a syphon dome to ensure the automatic operation of the apparatus when the head of the supply reaches a sufficient height.
Patent GB-1399502-A (GB)
Title: Sheets particularly for use in making plastics bag
IPC: A44B19/16
Filed: 1972-07-28
Abstract: 1399502 Seaming non-metallic sheet material MINIGRIP (LONDON) Ltd 28 July 1972 [30 July 1971 (2)] 35493/72 Heading B5K [Also in Division B8] Overlapping edges of a plastics film and a plastics strip are ultrasonically sealed together, the strip having thereon an elongate closure element adapted to releasably engage a complementary element. A plastics bag 10, Fig. 1, is formed from a film, e.g. polyethylene, folded to form side wells 11, 12 having plastics fastener strips 13, 14 ultrasonically welded thereto. As shown, the strip 13 is formed with an arrowhead rib element 17 which will snap into a groove element 18 on the strip 14 when pressure is applied, e.g. by the thumb and forefinger or by a slider. The portions 15, 16 of the strips 13, 14 overlapping the walls 11, 12 may be of the same thickness as or thicker than the walls 11, 12. The edges of the walls 11, 12 may be ultrasonically welded and ultrasonic seals (22), (23), Fig.3 (not shown), join the ends of the strips 13, 14 preferably on the line of, the elements 17, 18. The strips 13, 14 may be of the same material as or a different plastics material from the film. The film may be a lamination of a plurality of different plastics materials. Ultrasonic welding of the strips 13, 14 to the walls 11, 12 is effected by an ultrasonically vibrating head 25, Fig. 5, which may be a rotatable wheel moved along the overlapping portions or may be a horn with a small tip engaging sequential overlapping spots. A timer may be provided to control the time that the vibrations are imparted to the material and, if the head is a rotatable wheel, may control the speed of the wheel. In a modification, Fig. 9, two bags are formed simultaneously. Strips 34, 44 are attached to walls 30, 31 and the lower strips 35, 43 are in one piece and are welded by ultrasonic horns 40, 41 to the other bag walls. Simultaneously, a cutter 32 forms a weakened line 49 between the bags to facilitate tearing. In another embodiment, Fig. 10, a film F is extruded in tubular form from a head 119a of an extruder 119 and expanded by air within the film and cooled by air directed thereagainst by annular cooling rings 127. The film is slit by a cutter 129, twisted aideways by rolls 130, 130a so as to allow fastener strips to pass by and then twisted back over rolls 130c, 131. The film passes to an ultrasonic sealing station. The fastener strip S emerges from a shaped head 122 of an extruder 118 and passes through a cooling water bath 123 and over guide rolls 124, 124a to the sealing station. Rolls 131, 132 may be grooved or have roll tilting or guiding mechanisms so as to ensure proper orientation of the film and strip as they pass through the sealing station. In a further embodiment, Fig. 11a (not shown), the fastener strip is preformed and supplied from a roll (138) whilst the film is fed from an extruder (135). In a still further embodiment, Fig. 11b (not shown), the film is preformed and supplied from a roll (142) whilst the fastener strip is fed from an extruder (139).
Patent GB-891741-A (GB)
Title: Improvements in or relating to ropes
Inventor: TERRY STANLEY EDWARD
IPC: D07B1/04
Filed: 1959-10-21
Abstract: 891,741. Ropes. BRITISH NYLON SPINNERS Ltd. Oct. 14, 1960 [Oct. 21, 1959], No. 35602/59. Class 109. A rope comprises a core 1, Fig. 1, of parallel rope yarns 3 bound together by a spirally wound tape 2, a concentric layer of parallel rope yarns, 4 bound together by a spirally wound tape of opposite twist to that of the tape 2, and at least one further concentric layer of parallel rope yarns 6, Fig. 2, bound together by a spirally wound tape 7 of opposite twist to that of the tape next below it, each rope yarn consisting of a number of continuous synthetic linear polymeric filaments twisted together with a very low degree 'of twist. Around the final layer of rope yarns two spirally wound tapes 7, 8, of opposite twist may be applied. The resulting rope may be coated in polyvinyl chloride or rubber. The synthetic linear polymeric filaments may be of:- polyhexamethylene adipamide, polyethylene terephthalate, stereospecific polypropylene, poly-epsilon caprolactam, polykappa-aminoundecanoic acid, linear polyethylene. The tapes 2, 5, 7, 8 may be of fabric woven from yarn consisting of a synthetic linear polymeric filament, for example, polyhexamethylene adipamide, and are bonded in position by adhesive. The angle between the spiral of the tapes and the axis of the rope is  preferably such that each tape only covers less than 50% of the surface area that it surrounds. According to the Provisional Specification the density of the rope may be adjusted by the inclusion of additional materials, such as polyvinyl chloride, synthetic rubber and natural rubber so that the rope may sink or float.
Patent GB-429490-A (GB)
Title: Improvements in or relating to gas-operated radiant heaters
IPC: F24C3/04
Filed: 1934-12-12
Abstract: 429,490. Gas fires. SOUTH METROPOLITAN GAS CO., CHANDLER, D., and PRESTAGE, A. J., 709, Old Kent Road, Peckham, London. Dec. 12, 1934, No. 35709. [Class 126] In a radiant gas heater comprising a curved metal or other reflector 2 the sources of radiant heat comprise coils of heat. resisting wire mounted at one end on the burner nozzles 8, and either unsupported at the other end, as shown at 9, or bent to loop form and mounted at the other end on an adjacent burner, as shown at 10. The end turns of the coils may be of a size to grip the nozzles 8, and the coils may be tapered as shown.
Patent GB-903798-A (GB)
Title: Improvements in rotating pumps
IPC: F04C5/00
Filed: 1960-10-19
Abstract: 903,798. Flexible vane pumps. LORD MANUFACTURING CO. Oct. 19, 1960 [Dec. 21, 1959], No. 35811/60. Class 110 (2). A rotary pump comprises a housing having a cavity defined as an outer circumferential wall 15a and opposed end walls and an impeller having a number of radially projecting spokes 13, each of which carries a flexible blade 14 adapted to engage the circumferential wall of the cavity by edge 15 and the end walls by edges 16. In the embodiment shown in Fig. 3, the axial separation of the end walls varies from a maximum on one side of the cavity to a minimum on the opposite side, so that as the impeller rotates, the volume between adjacent spokes of the impeller, whose blades are squeezed by the end walls, varies, and fluid can be pumped. In another embodiment .(Fig. 10) the axial separation of the end walls varies to form a plurality of regions of maximum separation 41 and minimum separation 39, 40, so that as the impeller blades move in the direction of arrow 42, fluid is sucked through inlets 25a, 25# and ejected through outlets 23a, 23#. The inlets are preferably arranged nearer the axis than the outlets.
Patent GB-822125-A (GB)
Title: A process for the production of colour corrected colour photographic images
IPC: G03C7/18
Filed: 1957-11-18
Abstract: 4 - Chloro - 3 - carboxyl - 1 - phenyl sulphonyl azide, methane sulphonyl azide and dimethyl-amino-sulphonyl azide are prepared by treating the corresponding sulphonyl chlorides with sodium azide. 2-Azidobenzthiazole-5-sulphonic acid and 2-azidobenzthiazole-6-sulphonic acid are prepared by reacting the corresponding 2-hydrazinobenzthiazole sodium sulphonates with nitrous acid.
Patent GB-626504-A (GB)
Title: Improvements in and relating to fairleads
IPC: B65G39/10
Filed: 1946-12-04
Abstract: 626,504. Fairleads. LAMBERT, A. Dec. 4, 1946, No. 35892. Addition to 562,261. [Class 78 (v)] In a fairlead of the parent Specification having four rollers 6, 7, 7, 11, spaced in a square frame 1 to form a square through which the lead passes, the bottom roller 11 is divided, the inner ends being spaced apart and supported in bearings 10 so that a space 13 is left to permit passage of fasteners or hooks on a conveyer chain guided in the fairlead. The bearings 10 are provided by semi-circular edges on the bent-up inner ends 9 of the frame. One side 2 of the frame 1 is hinged at 3 to the top member 4 and is secured to the side 5 by a bolt carrying one roller 6.
Patent GB-336480-A (GB)
Title: Improvements in metal closures for jars
IPC: B65D41/04
Filed: 1929-11-23
Abstract: 336,480. Armstrong, J. J. V., (Phoenix- Hermetic Co.). Nov. 23, 1929. Cap-stoppers, screw and bayonet-joint.-The lower edge portion of the depending flange 2 of a threaded metal cap or jar closure is enlarged to a diameter greater than that of the threads of the jar, and is curved downwardly and inwardly to form a smooth rounded bead 5 of uniform cross-section throughout and extending all the way round the bottom of the cap. A knurled portion 3 of the usual character is provided.
Patent GB-447140-A (GB)
Title: Improvements in ridge tents
IPC: E04H15/16
Filed: 1934-12-15
Abstract: 447,140. Tents. BURNS, R., 2, Roselands Avenue, Sale, Cheshire. Dec. 15, 1934, No. 36016. [Class 20 (i)] A ridge tent A, Fig. 2, has a ventilating aperture a2 at the apex of the end wall a<1> and a ventilator cover B, the cover being connected to the tent by the continuous seam b which connects the end wall with the sloping roof a. As shown in Figs. 3 and 4, the ventilator cover is formed from a rectangular strip of cloth which is folded along the lines c, c<1> in such manner that the lines c<1> are brought, and subsequently sewn, together in pairs. The sewing stitches are indicated at b<1> in Fig 4. The cover is connected to the tent along the edges b<4>, b<5>.