baber/WOPTO huggingface dataset:
Patent GB-146410-A (GB)
Title: Improved manufacture of zinc sulphide
IPC: C01G9/08
Filed: 1920-07-02
Abstract: Pure zinc sulphide is prepared from a soluble zinc salt, by passing sulphuretted hydrogen into the solution after the addition of such quantity of magnesia or magnesium carbonate, that the final solution when all the zinc sulphide has been precipitated remains slightly acid.  The zinc solution employed may be prepared from any zinc bearing materials, but when obtained by acting on zinc blended with hydrochloric acid and eliminating impurities, the sulphuretted hydrogen evolved during the solution of the ore may be used subsequently to precipitate the zinc sulphide.  Hydrochloric acid and magnesia may be regenerated by heating in the presence of steam the magnesium oxychloride obtained by the addition of magnesia to the magnesium chloride solution left after the separation of the zinc sulphide.  The latter is calcined at a high temperature, washed and ground, and by incorporating with barium sulphate yields lithopone. As open to public inspection under Sect. 91 (3) (a) of the Act, the Specification also states that the magnesium oxide or carbonate may be replaced by an alkali or alkaline-earth oxide or carbonate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-632401-A (GB)
Title: Improvements in tampons
IPC: A61F13/20
Filed: 1947-07-11
Abstract: Viscose or regenerated cellulose sponge material is employed in making tampons, advantage being taken of its uniform absorbency, its comparative rigidity when in the dry state, the ease with which it can be compressed and its ability to retain its compressed form.ALSO:A tampon is made of a single piece of viscose or regenerated cellulose sponge, this being compressed to the desired cylindrical shape.  A pull string may be attached to one end of the body.  Owing to the rigidity of the material when dry no applicator is necessary.
Patent GB-207764-A (GB)
Title: Improvements in closures for jars, tumblers and other receptacles
IPC: B65D41/12
Filed: 1923-07-17
Abstract: 207,764. Ingram, H. July 17, 1923. Vacuum closures; closures completed by outstanding packing -rings; packing-rings for stoppers. -A side-seal closure for jars, tumblers, &c. comprises a cap 10 formed of thin, flexible, tender material, such as thin sheet aluminium, and provided with a depending skirt 21 formed with an annular recess 22, a metal reinforcing disc 12 applied within the cap and extending over the lip of the jar 13, and a gasket 11 located within the recess 22 and adapted to engage the wall thereof, the under surface of the outer portion of the disc 12, and the wall of the jar. To secure this engagement, a portion 24 of the wall of the recess is downwardly and inwardly set so that the gasket 11, as shown in Fig. 2, projects into the path of the vessel during closuring. The closure is removed by pulling tear-off tabs 23, formed integral with the skirt 21 or otherwise, the tabs being spun beneath the shoulder 15 of the jar where such is provided.
Patent GB-1102663-A (GB)
Title: Pesticidal compositions
IPC: C07D233/72
Filed: 1965-05-03
Abstract: Pesticidal compositions, especially suitable for combating fungi, nematodes and algae, comprise as active ingredient a :g -dichlorocrotonaldehyde, a derivative thereof formed by reaction of the carbonyl group, or a mixture thereof, together with a suitable solid carrier (e.g. talcum, kaolin or bentonite). Specified derivatives are bisulphite compounds, cyanohydrins, oximes, hydrazones, phenylhydrazones, azines, ammonia compounds, semicarbazones, thiosemicarbazones, acetols, mercaptals, setriff bases, and the products obtained by reaction with ureas or thioureas, with compounds containing activated methyl or methylene groups (e.g. pyroracemic acid, cyanoacetic acid, acetoacetic ester or 1-phenyl-3-methyl-5-pyrazolone) or with heterocyclic condensation reactants chosen from rhodanines, hydantoins, thiohydantoins and pyrooles or pyrazolones unsubstituted in the a  or b -position.  The composition may also contain a wetting agent, an adhesive, a filler, a solvent or an emulsifying agent.  Compositions for combating algae may comprise a surface-active quaternary ammonium salt and aluminium phosphate as additional ingredients.
Patent GB-1287023-A (GB)
Title: Volumetric fluid flow monitoring device
Inventor: BROWN ROBERT ANTHONY
IPC: G01F25/00
Filed: 1970-04-17
Abstract: 1287023 Measuring fluid-flow KODAK Ltd 19 April 1971 [17 April 1970] 18512/70 Heading G1R A volumetric fluid-flow monitoring device for checking or calibrating a flow-meter connected to an inlet portion 12 is connected in a service line  and includes an annulus 5 defined between a case 1 and a flexible tube 4, the annulus containing a calibrating liquid, e.g. water, and being connected to a measuring vessel 18. In use, a valve in outlet tube 14 is closed and the fluid flowing into the device accumulates in and expands the tube thus displacing liquid from the annulus into the vessel, the rise of the liquid between electrodes 20, 21 being timed. Since the volume of vessel 18 is predetermined, the volumetric flow-rate of the fluid into the device - the same rate as the liquid flow-rate into the vessel - is readily determined. When the liquid level reaches electrode 21, the outlet valve may be automatically re-opened.
Patent GB-380175-A (GB)
Title: Improvements in trolley wheels and heads as used in tramcar and trolley bus service
IPC: B60L5/06
Filed: 1931-06-27
Abstract: 380,175. Electric trolley heads. BRUSH ELECTRICAL ENGINEERING CO., Ltd. and BOYCE, B. A. M., Falcon Works, Loughborough, Leicestershire. June 27, 1931, No. 18609. [Class 104 (iii).] A trolley head for a tramcar &c. comprises a trolley wheel 1 provided with springs 3 between the hub 2 and the rim, so that the rim is capable of limited movement radially in any direction in its own plane. The bracket 10 in which the wheel is mounted has a stem 20 fixed in a swivelling member 21 which is rotatable in a bearing 22, and rests on a hard steel washer 24. Current passes from the wheel 1 to the bracket 10 through spring-pressed brushes 14, and thence to a flexible connection 26. The bearing 22 rests on a rubber pad 32 in the bracket 27, and rubber rings 32a are arranged between them. In another form, the wheel is mounted on a hollow spindle adapted to receive lubricant, and the rings 32a are omitted. In the form shown in Fig. 8 the springs 43 are arranged between a support 44 and a bearing 42 in which the bearing bracket 41 of the wheel 1 is rotatably mounted. In another form, the resilient means are arranged between the spindle of the wheel and the bracket.
Patent GB-1235375-A (GB)
Title: Carrier bags
Inventor: BLACKMORE ARTHUR EDWARD
IPC: B31B23/00
Filed: 1968-04-19
Abstract: 1,235,375. Carrier bags. COLODENSE Ltd. 24 March, 1969 [19 April, 1968], No. 18618/68. Heading A4G. A plastics carrier bag is formed from tube extruded from an annular orifice 1 and cooled at 6, the orifice having opposed portions of width greater than the remaining portions so that the tube has opposed thicker bands 5 on which the handles are formed. The tube is edge pleated at 9, 9<1>, flattened at 7, 7<1>, given a transverse heat seal 10 at 11, 11<1>, has hand holes 12 punched at 13 and is cut into bag lengths at 15. The holes may be partially cut to give interlocking flaps, the bands 5 may be cut to give protruding loop handles, or separate loop handles may be fused on to the bands.
Patent GB-1194453-A (GB)
Title: Thermoplastic Materials containing Polyacetals and Copolymers of alpha-Olefins
IPC: C08L59/02
Filed: 1968-04-19
Abstract: 1,194,453. Oxymethylene polymer-ethyleneester copolymer composition. FARBWERKE HOECHST A.G. 19 April, 1968 [20 April, 1967], No. 18663/68. Heading C3P. A thermoplastic composition comprises 99À5% to 70% of a copolymer of trioxan and 0.1 to 20% of a cyclic ether or cyclic acetal and from 0.5 to 30% of a copolymer of ethylene with a vinyl ester of a carboxylic acid or an ester of (meth)acrylic acid, the copolymer having an ethylene content of 50 to 75%, all percentages being by weight. In the examples trioxanethylene oxide copolymers are mixed with ethylene-vinyl acetate or ethyl acrylate copolymers and plates moulded therefrom.
Patent GB-357188-A (GB)
Title: Improvements in or relating to centreless grinding machines
IPC: B24B5/32
Filed: 1930-06-18
Abstract: 357,188. Centreless grinding. WHITE, A. E., 5, Quality Court, Chancery Lane, London.-(Cincinnati Grinders, Inc. ; 3058, South Street, Cincinnati, Ohio, U.S.A.) June 18, 1930, No. 18665. [Class 60.] A centreless grinding machine for treating work having parts of different diameters, for example, grinding reduced ends on cylindrical work-pieces 28, consists of a bed 10 upon which are mounted a grinding wheel 13 and a regulating wheel 18 adjustable respectively by screws to compensate for wear of the wheel and for diameter of the work. In bearings 19, 20 is mounted a drum 22 having secured on its periphery a number of brackets 24 provided on their upper surfaces with inclined work supports 26 with supplemental slightly raised portions 27. The work-pieces rest on the brackets and the drum is of such diameter, and is so positioned, as, during its rotation, to carry the portions 27 and the ends of the work-pieces through the grinding throat. The outer ends of the workpieces are supported by adjustable abutments 38 mounted in a flange 37 of the drum; the workpieces, when ground, fall into a basket resting on a bracket opening into a reservoir for cooling fluid.
Patent GB-757715-A (GB)
Title: Improvements in or relating to methods of textile weaving and looms therefor
Inventor: MURPHY WILLIAM
IPC: D03D35/00
Filed: 1953-07-06
Abstract: 757,715. Weaving two fabrics simultaneously; controlling automatic bobbin-changing mechanism. HIELD BROS., Ltd. June 29, 1954 [July 6, 1953], No. 18673/53. Classes 142 (2) and 142 (4). To enable pick-and-pick weaving to be performed on a 2-by-1 loom, two fabrics are woven superimposed, Figs. 3D and 3F, the wefts W1, W2 passing from one to the other slightly inwards of one edge so that both fabrics have a fast selvedge at this edge after the wefts have been severed along the line C Such selvedges may be formed at the other edge also, or the wefts may pass from one fabric to the other at the extreme edge, so that after cutting or tearing the fabrics apart, raw edges are left, except for certain picks where a shuttle emerging from one fabric re-enters the same fabric. Cutting fabrics in looms.-A slice 70, Fig. 7, is mounted on the breast beam B and reciprocated by a strap 89 coupled to the slay and by a spring 80. A blade 78, mounted on an adjustable support 77 and resting against a pin 75 on the slide, operates between the fabrics so that its recessed cutting edge 82 cuts the wefts at C as the fabric is taken up.  Controlling bobbin changing-Alternate bobbins in a single magazine correspond to one shuttle, and the intervening ones to the other shuttle, weaving being started with a full bobbin in one shuttle and a half-empty one in the other so that they need replenishing alternately. To ensure that only one bobbin-changing operation takes place even if the feeler indicates exhaustion on successive beat-ups, each cell of the change box, Fig. 4, has a feeler 31, 32, which slips sideways when a bobbin is depleted and strikes a rod 33 or 44 during beat-up, thereby actuating a push rod 39 or 49. The rods 39, 49 slide in bosses on a cam 55 (see also Fig. 6), whereby the first reciprocation of a rod rotates the cam from one extreme position to the other, causing its peak 55a to operate a push rod 58 ; if the same rod reciprocates again, it has no effect on the cam. The rod 58 tilts a nose 62 pivoted at 61, Fig. 4, from under a lug 63 on an arm 64, whereupon the arm drops into engagement with a notch 65 in a bell-crank lever 66 oscillated by a cam 68; the arm 64 is thereby pushed to rock a shaft S which actuates the bobbin-changing mechanism.
Patent GB-863847-A (GB)
Title: Improvements in or relating to valve apparatus for controlling the flow of fluids
IPC: F16K5/00
Filed: 1956-06-18
Abstract: 863,847. Valves. MERRILL, I. N., and MERRILL PUMPS Ltd. June 18, 1957 [June 18, 1956], No. 18744/56. Addition to 831,309. Class 135. A valve comprising a  rotor R mounted for rotation in a casing B having a substantially cylindrical cavity 11 is encased in a flexible tube D which frictionally engages the rotor and seats on surfaces 15, 16 to close the valve. During the completion of sealing engagement between the flexible tube and the seats slight relative movement takes place between the tube and the rotor so that on every closure a different part of the tube is engaged by the seats to ensure even wear of the tube. The single tube may be replaced by two tubes one inside the other with the inner tube more resilient.
Patent GB-426392-A (GB)
Title: Improvements in the manufacture of phosphoric acid
IPC: C01B25/22
Filed: 1933-07-03
Abstract: In the production of phosphoric acid by reacting phosphate rock with a reagent producing sulphate ions (sulphuric acid or an acid such as nitric or phosphoric acid together with a soluble sulphate) to form a slurry comprising crystals of calcium sulphate in aqueous phosphoric acid, the size of the calcium sulphate crystals is controlled by concurrently and in the same zone dissolving the rock and precipitating the calcium sulphate by introducing into the solid zone ground phosphate rock, the reagent producing sulphate ions, and slurry from a previous operation.  By varying the amount of slurry returned, the size of the crystals may be varied.  Excess of the reagent producing sulphate ions is maintained during at least the major part of the reaction, and the returned slurry may already contain an excess thereof; the concentration of such reagent at all stages of the reaction should, however, be less than 6 per cent, and it may be added in a plurality of steps when, as is usual, reaction is effected in a number of containers in series.  The phosphate rock used may be ground wet in phosphoric acid obtained by washing residues.  The Specification as open to inspection under Sect. 91 refers to control of the crystal size of any solid reaction product resulting from reaction between a solid and a liquid, and instances the manufacture of caustic soda and sodium sulphate. This subject-matter does not appear in the Specification as accepted.
Patent GB-151774-A (GB)
Title: Improvements in and connected with safety locking devices for motor cars, motor cycles and the like
IPC: F16K35/06
Filed: 1919-07-29
Abstract: 151,774. Beard, F., and Beard, F. H. July 29, 1919. Addition to 22529/14. Locks, applications of.-The parent Specification describes a lock for securing a brake in engagement. The present invention consists in applying the lock to a valve in the petrol pipe. The valve is cylindrical and has either a transverse port or an annular groove s. It is held in its closed position by the lock against a spring such as k which mav be either in tension or compression. The valve when closed prevents the movement of studs u carrying a plate t' that locks the nut t on the petrol pipe.
Patent GB-386557-A (GB)
Title: Improvements in ink wells
IPC: B43L25/02
Filed: 1932-07-04
Abstract: 386,557. Inkstands. BIBIC, P. and BIBIC, S., 7, Subica Ulica, Split, Jugo- Slavia. July 4, 1932, No. 18849. Convention date, Aug. 21, 1931. [Class 146 (iii).] In an inkstand of the type comprising two superimposed reservoirs a, b, the upper being closed except for an orifice communicating with the lower by a downwardly flanged neck m which determines the constant level g of the ink in the lower reservoir, the latter is divided into two compartments, one communicating with the upper reservoir through the necked orifice, and the other forming the actual dipping well c, the two compartments being connected together by two passages n, f, the former below the ink level and the latter above this level to permit access of air to the upper reservoir as ink is withdrawn from the well. The' upper reservoir a may be provided with a filling orifice closed by a stopper d, and with grooves h to receive pens. The well c may be closed by a hinged lid e. The inkstand is preferably made in an integral form.
Patent GB-1243169-A (GB)
Title: PRODUCTION OF alpha-L-ASPARTYL-L-PHENYLALANINE ALKYL ESTERS
Inventor: ARIYOSHI Y
IPC: C07K5/075
Filed: 1970-04-20
Abstract: 1,243,169. a - L - Aspartyl - L - phenylalanine alkyl esters. AJINOMOTO CO. Inc. 20 April, 1970 [30 April, 1969], No. 18849/70. Heading C2C. An a-L-aspartyl-L-phenylalanine alkyl ester of the formula wherein R is a (C 1- C 4 ) alkyl group and Ph is an optionally substituted phenyl group, is obtained by reacting an N-protected-L-aspartic anhydride having its N atom protected by a formyl, carbobenzoxy orp-methoxycarbobenzoxy group with an L-phenylalanine (C 1- C 4 ) alkyl ester in an organic solvent to form an N-protected a-L- aspartyl-L-phenylalanine (C 1- C 4 ) alkyl ester and an N-protected (#-L-aspartyl-L-phenylalanine (C 1- C 4 ) alkyl ester, and either (a) separating the N-protected #-L-aspartyl-compound and eliminating the protecting groups from the N-protected α-L-aspartyl-compouhd to obtain the desired ester; or (b) eliminating the protecting groups from the N-protected a- L-aspartyl compound and the N-protected #.L-aspartyl compound and separating the # - L - aspartyl - L - phenylalanine (C 1- C 4 ) alkyl ester from the unprotected a- and #-L- aspartyl - L - phehylalahihe (C 1-  C 4 ) alkyl esters formed to obtain the desired ester. The N - protected a - and # - L  aspartyl - L- phenylalanine .(C 1 -C 4 ) alkyl esters may be separated by converting them to their correspending amine salts followed by fractional crystallization. The unprotected a- and #-L- aspartyl - L - phenylalanine (C 1- C 4 ) alkyl esters may be separated by fractional crystallization. Examples are given which illustrate the process.
Patent GB-905459-A (GB)
Title: Anti-coccidial compositions comprising nitrofuran derivatives
IPC: A23K1/00
Filed: 1959-06-03
Abstract: Nitrofuran derivatives of the general formula <FORM:0905459/IV (b)/1> wherein R is a hydrogen atom or lower (1-5 carbon atoms) alkyl group and R1 is a hydrogen atom or a lower alkyl or alkanoyl group are prepared by the interaction of 5-nitro-2-furaldehyde and the appropriate hydrazine derivative. Specific preparations relate to: (a) the preparation of 1-methyl-2-(5-nitro-2-furfurylidene) hydrazine using methyl hydrazine; (b) 1-acetyl-1-methyl-2-(5-nitro - 2 - furfurylidene) hydrazine by reaction of the compound (a) with acetic anhydride; (c) 1-ethyl-2-(5-nitro-2-furfurylidene) hydrazine using ethyl hydrazine sulphate; (d) 1-acetyl-1-ethyl-2(5-nitro-2-furfurylidene) hydrazine by acetylation of compound (c) with acetic anhydride; (e) 1,1-dimethyl-2-(5-nitro-2-furfurylidene) hydrazine using dimethyl hydrazine hydrochloride; (f) 1-butyryl - 1 - methyl-2-(5-nitro-2-furfurylidene) hydrazine by treatment of compound (a) above with butyric anhydride; (g) 1-butyryl-2-(5-nitro-2-furfurylidene) hydrazine using butyryl hydrazine; (h) 5-nitro-2-furfurylidene hydrazine using hydrazine hydrate.ALSO:Compositions having anti-coccidial properties comprise an inert carrier in admixture with from about 1 to about 25% by weight thereof of a nitrofuran derivative represented by the general formula <FORM:0905459/VI/1> wherein R is a hydrogen atom or a lower (1 to 5 carbon atoms) alkyl group and R1 is a hydrogen atom or a lower alkyl or lower alkanoyl group.  Specified compounds are: 1-acetyl-1-methyl-2-(5-nitro-furfurylidene) hydrazine (preferred) and the corresponding 1-acetyl-1-methyl-; 1,1-dimethyl-; 1-butyryl - 1 - methyl-; 1-ethyl-; 1-butyl-derivatives and the parent 5-nitro-2-furfurylidene hydrazine.  The compositions may be in the form of "pre-mix" concentrates for incorporation into poultry feeds or in the form of a poultry feedstuff, the quantity of active compound being such that the feedstuff for consumption contains from 0.003 to 0.02% (preferably 0.015 to 0.02%) by weight.
Patent GB-1465629-A (GB)
Title: Solid state components
IPC: H01L21/00
Filed: 1974-05-01
Abstract: 1465629 Semi-conductor devices WESTING- HOUSE ELECTRIC CORP 1 May 1974 [16 May 1973] 19117/74 Heading H1K A field effect transistor comprises a substrate 33 of first conductivity type, Fig. 2D, on which is a first layer 35 of second conductivity type and a second layer 37 of first conductivity type, at least two spaced regions of insulating material 39 on the second layer, there being a groove 91, Fig. 2H, between the two insulating regions which penetrates through the first and second layers 35, 37 down to the substrate 33 and the groove 91 being overhung by the parts 95, 97 of the two insulating regions, the surface of the groove 91 being coated with an electrically insulating material 93 on which an electrode 111  is formed on that part of the groove under the overhang of one of the parts 95, 97, the electrode being only opposite the edge of the first layer 35 extending along the groove. In the fabrication of such a transistor, on the epitaxial N+PN+ silicon body 31 a number of SiO 2  fingers 61, Fig. 1, extending from a projection 63 are formed, each finger in addition including a slot 67 therein which exposes the second layer 37 and the spaces between the fingers 61 being where subsequently the grooves 91 are formed in the body. Over the fingers 61 a first layer of Si 3 N 4  is formed which in turn is selectively covered by regions 77 of SiO 2  over the slots 67 and immediately adjacent regions, Fig. 2D. The Si 3 N 4  and the underlying body regions are then etched away to expose the substrate 33 at the bottom of the grooves 91, an SiO 2  layer 93 then being formed over the surface of the grooves. The remaining SiO 2  and Si 3 N 4  regions are removed from the surface of the body 31 to expose the surfaces for the drain electrodes The gate electrodes 111 and the drain electrodes 113 are deposited simultaneously by projecting a linear metal vapour stream (indicated by arrows in Fig. 2H) at an appropriate angle to the surface whereby the overhangs 95, 97 serve as a mask for the gate electrode 111 deposited in the grooves. The direction of the metalvapour stream is then altered to the supplement of the first angle to form a similar gate electrode under the opposite overhang and to enhance the conductivity of the drain electrodes. The spaced gate and drain electrode regions are connected to respective common pads 63, 65, Fig. 1. Several thousand of such FET's can be produced on a layered slice of doped semi-conductor of one square inch area. Detailed manufacturing processing steps, typical dimensions and the characteristics of the devices so produced are disclosed. Apparatus for effecting the particular angular gate evaporation is described, Figs. 5 and 6 (not shown). The MOSFET thus produced is able to deliver microwave power at high frequency with high input impedance.
Patent GB-200362-A (GB)
Title: Improvements in and relating to casings for liquid-cooled electrical apparatus, such as transformers
IPC: H01F27/14
Filed: 1922-07-12
Abstract: 200,362. British Thomson - Houston Co., Ltd., (General Electric Co.). July 12, 1922. Transformers. - A casing 1 for electrical apparatus, such as transformers, is connected with an expansion chamber 3 and is completely filled with oil or other cooling liquid which extends into the chamber 3, means responsive to pressure within the casing being provided for varying the effective size of the opening between the casing and the expansion chamber. In the form shown, a valve 4 is provided in the pipe 2 connecting the casing with the expansion chamber, the normal expansion and contraction of the liquid in the casing 1 taking place through a small hole 5 in the valve. On the occurrence of a sudden increase of pressure in the casing, due to a short-circuit or other fault, the valve opens towards the expansion chamber and the pressure in the casing 1 is instantly relieved. The pressure in the expansion chamber is limited to safe values by providing the chamber with a large outlet 10 closed by an easily ruptured diaphragm 9. The. tube 2 preferably extends above the bottom of the chamber 3 which is provided with a trap 8 in which water may collect.