baber/WOPTO huggingface dataset:
Patent GB-726840-A (GB)
Title: Recovery of anti-pernicious anemia factors
IPC: C12P19/42
Filed: 1953-02-09
Abstract: Vitamin B12 and related substances are recovered from aqueous solution, e.g. a fermentation broth, by contacting with solid 2,4,5-trichlorophenol to form a trichlorophenol extract containing Vitamin B12.  Subsequently the trichlorophenol extract may be treated with a water-immiscible organic liquid and water, the organic liquid being a solvent for 2,4,5-trichlorophenol and a non-solvent for the Vitamin B12 compound, e.g. carbon tetrachloride, chloroform and ethylene dichloride, to form an aqueous extract of Vitamin B12 compound free from trichlorophenol.  Alternatively the trichlorophenol extract may be dissolved in acetone or methanol before being treated with the water-immiscible organic liquid and water.
Patent GB-971134-A (GB)
Title: Improvements relating to metal casting
IPC: B22C1/16
Filed: 1962-10-01
Abstract: Refractory slurries comprise a refractory powder and an aqueous binder solution consisting of silica sol and polyvinyl alcohol. The refractory material may be silica, quartz, alumina, zirconia or zircon, and the compositions may also comprise surface active and antifoam agents. Examples describe slurries comprising silica sol, polyvinyl alcohol, sodium di(2-ethylhexyl) sulphosuccinate, polymethyl siloxane, silica flour, zircon flour and a granular zircon having spherical particles. The slurries may be used for investment casting shell moulds around disposable patterns.
Patent GB-294085-A (GB)
Title: Improvements relating to sewing machines
IPC: D05B3/02
Filed: 1928-02-06
Abstract: 294,085. Armstrong, E. W., and Mitchell, J. G. Feb. 6, 1928. Needles, vibrating laterally. - Two laterally vibrating needles vibrate oppositely and to independently variable extents. One needle 11 is normally fixed upon a needle-bar 1 which slides in an oscillating frame 3 of known construction actuated by a pitman 4. The other needle 10 is carried by a holder 8 slidingly mounted on the needle bar and reciprocated therein in opposite phase to that of the needle-bar and needle 11 by means of a rod 15 having a sliding connection with the holder 8 and reciprocated laterally from the oscillating frame 3 through a lever 26. The move ment imparted through the lever 26 can be varied by moving the pivot pin 27 along a slot in its fixed support. The needle holders 8, 9 can be moved laterally in a slot 7 in the needle bar and the holder 9 can be fixed in an oblique position so that the points of the needles cross on their inward movements. The link 24 is of adjustable length to accommodate the lateral adjustment of the holder 8. Automatic variation of the ampli. tude or field of the vibration of the needle-bar and needle 11 is accompanied by a corresponding variation in the movement of the needle 10 and patterns such as shown in Figs. 12 and 13 can be produced. Needles.-To permit the crossing of the needles they are formed on the adjacent sides with flat faces.
Patent GB-957988-A (GB)
Title: Improvements in and relating to the cleaning of road surfaces
IPC: E01H3/02
Filed: 1962-01-31
Abstract: 957,988. Road cleaning machines. WOMAAPPARATEBAU WOLFGANG MAASBERG & CO. G.m.b.H. Jan. 31, 1962 [Feb. 1, 1961], No. 3635/62. Heading E1G. In a method of and apparatus for cleaning road and like foundations, a high pressure pump 3 supplies water to nozzles 2 at 50-100 atmospheres gauge and the jets 10 from the nozzles impinge on the surface to be cleaned at an angle of approximately 30 degrees. A collector gutter 12 ahead of the nozzle tube 1 is drained by a line 14 connected to a suction pump 13 and a settling tank 9. The nozzle tube may, as shown, be at right angles to the direction of travel of the vehicle on which it is mounted with the gutter 12 arranged at an angle to the tube and closer to it at the nearside of the vehicle, shown here for the right hand rule of the road, or both the gutter 12 and tube 1 may be inclined to the direction of travel.
Patent GB-1511412-A (GB)
Title: Oligomeric terephthalic acid ethylene glycol esters and a process for their production
IPC: C07C69/82
Filed: 1976-01-29
Abstract: 1511412 Oligomeric terephthalic acid ethylene glycol esters DYNAMIT NOBEL AG 29 Jan 1976 [1 Feb 1975] 03648/76 Heading C2C [Also in Division C3] The invention comprises a terephthalic acid ethylene glycol ester solid at ambient temperature and having a purity such that it possesses each of the following characteristics: a solidification point in the range of from 180 to 220 C.; a reduced viscosity measured as herein specified of from 0À07 to 0À14 dl./g.; a melt viscosity not higher than 250 cP; an oligomeric ester content of at least 80% by weight; a free ethylene glycol content of at most 5% by weight and an average degree of condensation of from 2À2 to 6À7. It may be obtained by continuously introducing dimethyl terephthalate and ethylene glycol in a molar ratio of from 1 : 1À6 to 1 : 2 into an upper chamber of a multi-chamber column reactor which comprises a plurality of chambers arranged vertically one above the other, each communicating with the chamber or chambers thereadjacent, catalytically effecting transesterification of the dimethyl terephthalate at temperatures in the range of from 140 to 240 C. as the reaction mixture from said upper chamber passes through a plurality of the chambers to yield a transesterification product in a lower chamber, which product is continuously passed to a zone in which the pressure is below ambient pressure, the temperature is from 10 to 40 C. above the solidfication point of the transesterification product and the residence time of the transesterification product is such that as much glycol is removed therefrom as is necessary for adjusting the terephthalic acid : glycol molar ratio of the product to a value of from 1 : 1À45 to 1 : 1À15, and continuously applying the liquid product thus obtained in a thin layer to a surface heated to from 40 to 100 C. and removing the product from said surface in solid form. Specified transesterification catalysts are zinc and manganese acetates. Alkali metal alcoholates may be employed as co-catalysts.
Patent GB-595149-A (GB)
Title: Improvements in or relating to photographic tone correcting masks
IPC: G03C7/18
Filed: 1945-02-14
Abstract: 595,149. Photographic tone- and colour-correction masks. KODAK, Ltd. (Eastman Kodak Co., and Glasoe, P. K.). Feb. 14, 1945, No. 3655. Addition to 570,498. [Class 98 (ii)] A method of forming the photographic tonecorrection mask claimed in the parent Specification comprises giving a light-sensitive silver halide emulsion layer a sufficiently small exposure to light through the transparency to record only the toe densities thereof, developing in the emulsion layer a silver image of opposite sign to the transparency, bleaching the silver image to a silver salt image which is relatively inactive towards subsequent exposure of the residual silver halide and formation of an image therein, exposing the emulsion layer containing unexposed silver halide through the transparency in register with the first-produced image, forming in the re-exposed emulsion layer an image of lower gamma than the firstformed silver image, and removing any unexposed silver salt from the emulsion layer. The first-formed silver image may be rendered inactive by rehalogenisation in a ferricyanidebromide bleaching bath, the silver halide image so formed being removed in the final fixing bath. If the transparency is subtractively coloured, the light used for the second exposure may be of a colour most highly absorbed by the image or images whose undesirable light absorption properties have to be corrected for, and may be of such composition that it is absorbed by the colouring matters of the minus green and minus red images in the transparency in the relative proportions in which blue light is absorbed by these colouring matters. Yellow or red light of the character specified in Specification 551,614 may be used. The masking image may be processed to colour in which case the colour of the light used for the production of the mask, its colour and its absorption gamma may be correlated as in Specifications 553,196, 553,229 and 553,230. The transparency may have been produced by the reversal process. A masked multicolour transparency may be printed on to three-layer material in which coloured images are produced by the reversal process. The residual silver halide may be red-sensitized after rehalogenisation of the first silver image, and benztriazole may be added to the second developer to inhibit development of the rehalogenised silver. The second developer may be a colour developer or a developer producing a neutral grey image. Specification 507,841 also is referred to.
Patent GB-1375442-A (GB)
IPC: C23C22/68
Filed: 1972-01-26
Abstract: 1375442 Electrodepositing compounds STAHLWERKE PEINE-SLAZGITTER AG 26 Jan 1972 [26 Jan 1971] 3660/72 Heading B2E [Also in Divisions Cl and C7] A metal body is provided with a corrosionresistant coating consisting essentially of an inorganic precipitate and an ion-exchange substance forming a matrix for the precipitate and bonded thereto by ion exchange to provide a three-dimensional cross-linked corrosion-resistant coating with the precipitate, the inorganic precipitate and ion-exchange substance forming alternate layers. The ion-exchange agent may be a zeolite, especially in the form of an aqueous extract of iron ore sinter, and may be admixed with a hexa- or metapolyphosphate. A brass tube is protected by use of industrial water containing CaCO 3  and also containing ion-exchange agent while, in the case of iron, CaCO 3 -containing water is applied first followed by water plus ion-exchange agent. For a copper surface, copper sulphide is utilised as the precipitate. A dye or pigment may be added to the liquid from which the precipitate is deposited.
Patent GB-658862-A (GB)
Title: Improvements in tracing sketching pads
IPC: B42D5/00
Filed: 1949-02-10
Abstract: 658,862. Drawing appliances. CRAWFORD, H. J. Feb. 10, 1949, No. 3682. [Class 11] A sketching pad comprises a pad 7 of tracing paper secured to a backing card 6 and a graph, guide or like card 1 or cards for use therewith formed separately and removably attached to the backing card 6 by a hinge element 2. The hinge element 2 comprises strips 3, for example of linen, secured to both sides of one end of the card 1 and also embracing a piece of card approximately the same thickness as the card 6 and having a projecting portion to fit a recess 9 in the end of the card 6. The linen strips extend beyond the piece of card to form a pocket 8 into which the end of the backing card 6 enters till the recess 9 fits the projecting portion. A part 10 of the hinge 2 may be cut away. A cover sheet 11 may be provided. The graph card 1 may be replaced by a card bearing human figures, as for dress designing, or animals for use by children.
Patent GB-1092109-A (GB)
Title: Shaft sealing devices
Inventor: APLIN NEVILLE FREDERICK
IPC: F16J15/32
Filed: 1965-01-27
Abstract: 1,092,109. Shaft seals. JOSEPH LUCAS (INDUSTRIES) Ltd. March 10, 1966 [Jan. 27, 1965], No. 3682/65. Heading F2B. Sealing means for a non- circular shaft (10, Fig. 1) comprises a composite ring 12 comprising an elastomeric inner portion 125 having an inner surface shaped to tightly and sealingly engage the shaft and an outer rigid ring portion 12a providing a cylindrical sealing surface for a fluid seal (11, Fig. 1). The portion 12b, which is splined to fit the shaft (10), is bonded to the metal ring 12a and may have axially extending cavities 13 therein. The seal (11) fits in a housing (9) and comprises a spring-loaded lip that engages the metal ring 12a.
Patent GB-594894-A (GB)
Title: Improvements in or relating to method and means for exterminating animals
IPC: A01M23/38
Filed: 1945-02-15
Abstract: 594,894. Light-sensitive rat traps. STEVENS, A. H. (Electronic Traps, Inc.). Feb. 15, 1945, No. 3814. [Class 5 (i)] [Also in Group XL] An apparatus for catching and electrocuting rats consists of a box 5, having a through passage crossed by a light-ray from a lamp 29. On entering the box the rats break the ray so opening a circuit including a photo-electric cell 32. A circuit including relay 120, and valve 114 is now closed and a catch 27 is moved by magnet 28 so releasing bar 26 holding the angle bar 21 in position on the wall 7 of the box. Doors 12, 13 run down under gravity on rollers 20 by means of levers 23, 25 so enclosing the rat. Simultaneously gate switch 126 is closed and the chamber C lit by a lamp L ; in parallel with this lamp is a 15-minute timing motor 127 which governs the resetting of the trap in case of mishap. A false exit is provided in wall 7 which leads via a ramp R to an execution chamber E. The ramp consists of a conducting run 42 pivoted at 43 and connected by rod 46 to catch 37 holding door 35. When the run 42 is moved by the rat the door falls closing the chamber and a switch 49 closed which electrifies the floor of the ramp through conductors 50. The rat is impelled into the execution chamber E which consists of a metal hinged floor 51 acting as an electrode, moved from its dropped position so that it is the floor of the chamber, by catch 54 attached to bar 21. Upper electrodes 70, 71, 75 are governed in parallel linkage by hair - pin spring 77. A partition-like trigger 52<SP>1</SP> is moved by the rat so that by a series of levers and catches 58, 59, 63, 66, 68, 78 the upper electrode descends, spikes 76 coming into close contact with the rat. Simultaneously a switch 62 is closed and the electrocuting current passes between the two electrodes for 2-3 minutes governed by timing-motor 137. When this motor stops it closes a circuit for lifting motor 81 which by a train of gears lifts catch 26 and hence doors 13, 12 by bar 21. Door 13 has a catch 85 engageable with door 35 which is also lifted and held by catch 37 opening switch 49 in the operation. On movement of bar 21 catch 54 lets down the hinged plate 51 and the dead rat drops into a receptacle. Attached to bar 21 is a roller 89 which comes into contact with roller 90, reversing the process of the levers and catches and restoring the trap to its original position, and at the same time opening the electrocuting circuit. The 15-minute timing-motor is reset by the opening of switch 126 and the trap is now reset. A test-key 95 is supplied to check the trap. The current is supplied through a transformer and various voltages may be tapped.
Patent GB-701424-A (GB)
Title: Improvements in or relating to means for the suspension of pipelines in pneumatic conveyor installations
IPC: B65G67/00
Filed: 1952-02-13
Abstract: 701,424. Pneumatic conveyers ; indicating. MIAG MUHLENBAU UND INDUSTRIE GES. Feb. 13, 1952 [Feb. 17, 1951], No. 3814/52. Classes 78 (1), 78 (4) and 78 (5) The cable 2, by which the pipe line 1 of a pneumatic conveyer is suspended from'a jib 4' and raised and lowered, runs over a roller 7 which is suspended from a load-indicating device 8. The pointer 10 of this device indicates the load and the pointer 9, on reaching a contact 11, operates (1) a warning device, e.g. a siren 15 and (2) a disconnecting switch 13 for the motor of the winch 6 through a relay 14.
Patent GB-150621-A (GB)
Title: Apparatus for playing a parlour game
IPC: A63F9/16
Filed: 1920-02-07
Abstract: 150,621. Brinkley, G. B. Feb. 7, 1920. Games of chance.-Relates to game apparatus of the type in which a spinning-top moves over the surface of a flanged table upon which skittles are placed. According to the present invention, the flange of the table is made, except at one point, at least as high as the spinning-top. The flange is cut down at one part 9 and is formed with a horizontal slot 10, with which communicates a slit 12 to allow the insertion of the cord by which the top is spun into the slot 10. The top is flat-ended and is formed with a mushroom head and a reduced stem, as shown in Fig. 4. The table may be of elliptical or other shape.
Patent GB-993053-A (GB)
Title: Dithiocarbamoylmethyl esters of carboxylic acids and pesticidal compositions containing them
Inventor: PIANKA MAX
IPC: C07C333/18
Filed: 1960-05-23
Abstract: The invention comprises compounds of the formula <FORM:0993053/C2/1> where Z is hydrogen, alkyl or alkenyl, Y is alkyl of at least 2 carbon atoms, or may be methyl when Z is other than hydrogen, or is phenylalkyl, halogenophenyl, nitrophenyl, phenylalkenyl, alkenyl or a RR1NCSS-alkyl group; R is hydrogen or C1- 3 alkyl and R1 is C1- 3 alkyl; and their production by reacting ZCHHal.OCOY with MSCSNRR1, where Hal is chlorine, bromine or iodine and M is alkali metal or ammonium, e.g. in acetone or aqueous acetone and preferably at from - 60 DEG  to +40 DEG C.  The compounds of the invention are pesticides (see Division A5).  Intermediates.-Chloromethyl propionate is prepared from paraformaldehyde and propionyl chloride; 1-chlorobut-2-enyl crotonate from crotonaldehyde and crotonyl chloride; and a -chloroethyl acetate from paraldehyde and acetyl chloride.ALSO:The invention comprises pesticidal compositions containing a compound of formula <FORM:0993053/A5-A6/1> where Z is hydrogen, alkyl or alkenyl, Y is alkyl of at least 2 carbon atoms, or may be methyl when Z is other than hydrogen, or is phenylalkyl, halogenophenyl, nitrophenyl, phenylalkenyl, alkenyl or a RR1NCSS- alkyl group; R is hydrogen or C1-3 alkyl, and R1 is C1-3 alkyl (see Division C2) in association with a carrier or diluent.  The composition may be a solution, emulsion, aerosol, dust, wettable powder, granulate, pellet, paste or thermal fumigating mixture.
Patent GB-1027841-A (GB)
Title: Improvements relating to pick-up tubes having photo-conductive or semi-conductive targets
Inventor: LUBSZYNSKI HANS GERHARD
IPC: H01J29/45
Filed: 1962-02-01
Abstract: 1,027,841. Photo-conductive devices; television pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 31, 1963 [Feb. 1, 1962], No. 3895/62. Headings H1D and H1K. A pick-up tube comprises a radiation sensitive target comprising a first semi-conductor layer on a conductive film and a second layer on the first, of amorphous material including selenium and arsenic. The Figure shows a vidicon type tube, in which the target consists of a transparent conductive film 4 on the end of the glass tube 1, a thin (0À3 Á) deposited layer 5 of selenium and a deposited layer 6 (0À3 to 3 Á thick) of arsenic and selenium. The proportion of arsenic may vary between 3% and 36% by weight. A smaller amount of arsenic (5 to 10%) or other impurity may be provided in the first layer 5.
Patent GB-786010-A (GB)
Title: Method of applying a protective coating to a heat-sensitive electrical element
IPC: H01G13/00
Filed: 1956-02-08
Abstract: Heat-sensitive electrical elements are coated with a liquid composition comprising a polymerizable monomeric compound which is then polymerized to the solid state by exposing it to a beam of accelerated electrons.  The polymerizable compound may be a monohydric or polyhydric alcohol ester of acrylic or methacrylic acid, such as methyl, ethyl, or butyl acrylate or methacrylate, dipropylene glycol dimethacrylate, tetraethylene glycol diacrylate or dimethacrylate, pentamethylene glycol dimethacrylate and glyceryl trimethacrylate, acrylonitrile, a mixture or liquid copolymer of an unsaturated alkyd resin with styrene or diallyl phthalate, or a liquid organopolysiloxane as disclosed in Specifications 542,655, 544,143, 548,911, 548,912 and 551,649, [all in Group IV].  The monomer may be frozen to the solid state, irradiated while solid and then warmed to a liquid state, when polymerization occurs rapidly.ALSO:Heat-sensitive electrical elements are coated with a liquid composition comprising a polymerizable monomeric compound which is then polymerized to the solid state by exposing it to a beam of accelerated electrons.  The polymerizable compound may be a monohydric or polyhydric alcohol ester of acrylic or methacrylic acid, such as methyl, ethyl or butyl acrylate or methacrylate, dipropylene glycol dimethacrylate, tetraethylene glycol diacrylate or dimethacrylate, pentamethylene glycol dimethacrylate and glyceryl trimethacrylate, acrylonitrile, a mixture or liquid copolymer of an unsaturated alkyd resin with styrene or diallyl phthalate, or a liquid organopolysiloxane as disclosed in Specifications 542,655, 544,143, 548,911, 548,912 and 551,649, [all in Group IV].  The monomer may be frozen to the solid state, irradiated while solid and then warmed to a liquid state, when polymerization occurs rapidly.
Patent GB-227651-A (GB)
Title: Improvement in electric clocks
IPC: G04C3/02
Filed: 1924-02-15
Abstract: 227,651. Appelmans, C. Feb. 15, 1924. Electric clocks.-The pendulum receives impulses from a forked extension 15 of a pivoted lever 6, which is actuated by an electromagnet 7 and armature 5 on the spring 5<1> secured adjustably to the lever. The electromagnetic circuit is closed by a pivoted piece 1 on the lever (i which, on the upward movement of the pendulum, is raised by the gravity-controlled pivoted cam 2 over a support 3 and, at the time the pendulum passes through the mid-position, contacts with the down-turned end of the arm 4 to close the circuit through the conductor 13 and the electromagnet. The axis of the magnet is parallel to the chord of maximum swing of the pendulum.
Patent GB-244299-A (GB)
Title: A loom weighting motion
IPC: D03D49/06
Filed: 1925-02-13
Abstract: 244,299. Northrop, H., and Hartley, B. Feb. 13, 1925. Letting off warps.-The weighing ropes &c. A for the warp beam are connected to the notched short horizontal arms a of two bell crank levers a. a<2>. One of the levers a, a<2> carriers a two-armed curved lever C, one arm of which supports a bowl c<2> on a weighted arm c<1> pivoted to an adjustable bracket c on the loom frame. The bowl may be flanged and may be mounted on an adjustable or fixed stud. The other arm of the lever C is connected by a threaded rod a<5> and adjusting nuts a<8>, a<9> to the short arm b of a curved releasing lever b<1>, b pivoted to the vertical arm a<2> of the other bell crank lever a, a<2>. The lever arm b<1> normally engages a catch a<10>, but can be released therefrom by the weaver, whereupon the weighted arm c<1> falls and takes the tension off the ropes &c. The tension can be varied by means of the nuts a<8>, a<9> and by moving the weighted arm or the weight.
Patent GB-273605-A (GB)
Title: Improvements in or relating to steam condensers
IPC: F28F9/16
Filed: 1926-02-12
Abstract: 273,605. Thornycroft & Co., Ltd., J. I., Thornycroft, Sir J. E., and Donaldson, T. Feb. 12, 1926. Straight-tube apparatus; expansion and contraction of tubes in, providing for. - Leakage of cooling water into the steam space of a surface condenser is prevented by passing the cooling-water tubes 1, Fig. 2 through tube plates 2 in front of the tube-plates 3 by which the tubes are secured to the cooling- water headers, and by maintaining the intermediate chambers 5 filled with pure water under pressure. Tight joints are formed by packing rings 6, 6<a> held by plain or screwed sleeves 7 and a screwed ferrule 9. Openings 8 are made in the sleeves 7. Separate screwed ferrules may be used in each tube-plate. The tube-plates 2, 3 may be stayed by screw studs. In the case of a condenser in which the cooling-tubes are fixed, as by expansion, in a fixed tube plate 15, Fig. 4 at one end and a sliding plate 16 at the other end, the plate 16 slides over an annular waterchamber 5a having channelled packing rings 20, 20a and supplied with pure water through a radial opening 19<a>. The chambers 5, 5<a> may be supplied with water by a pump acting through a pressure maintaining device consisting of a chamber containing an air cushion or a spring- pressed piston.