baber/WOPTO huggingface dataset:
Patent GB-714553-A (GB)
Title: Load-regulating device for a hammer mill
IPC: B02C25/00
Filed: 1952-09-11
Abstract: 714,553. Fluid-pressure servomotor-control systems. NAUTA, J. E. Sept. 11, 1952 [Sept. 18, 1951], No. 22873/52. Class 135. [Also in Group XXXV] In an automatic control system in which the load on an electric motor driving a hammer-mill is maintained constant by varying the rate of feed of material to the mill, the flow of the material from a hopper is regulated by a hydraulic gate valve. A three phase A.C. motor 2 drives the mill 1 to which material is fed by a belt 12 from a hopper 6. The outlet from the hopper 6 is controlled by a hydraulic ram 15 which is raised by a pump 33 when a bye-pass valve 39 is closed. This valve remains closed, and hence the feed is steadily increased, until a contact making ammeter 45 in the motor circuit energizes a solenoid 43 to open the valve and allow the ram to descend. A hinged plate 19 and contacts 26 disconnect the motor 32 driving the pump 33 when the hopper 6 is empty. In a modification, Fig. 2 (not shown), the ammeter has two adjustable contacts so that the valve is opened at one value of current and closed at another. In a further modification, Fig. 3 (not shown), the contact making ammeter is replaced by a current transformer and rectifier connected to energize the valve solenoid in oposition to a reference voltage. It is also stated that the hydraulic ram may control the speed of the feed belt 12 instead of varying the outlet from the hopper.
Patent GB-409186-A (GB)
Title: Improvements in and relating to gear wheels
IPC: F16H7/02
Filed: 1933-08-16
Abstract: 409,186. Gear wheels. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Mansur, C. W.; 32, Spruce Street, Malden, Massachusetts, U.S.A.) Aug. 16, 1933, No. 22901. Convention date, Aug. 17, 1932. [Class 80 (i).] A gear wheel or blank has a rim comprising a strip of woven cloth coiled edgewise on itself and united by an adhesive, the inner edge of the strip having spaced projections ; and the web is composed wholly or mainly of textile fabric or fibres united by an adhesive, material of the web being located in the spaces among the projections for uniting the rim to the web. In the form shown in Figs. 2 and 5, the rim is wound from a serrated strip 1 of cotton duck cut from a plain strip as shown in Fig. 1, and impregnated with a phenolic condensation product. The projections 4 on the strip lie in staggered formation inside the rim. A preformed web and hub 6 are moulded on to the rim in a press 10, Fig. 5, at a temperature sufficient to mature the adhesive. In a modification, the hub and web are formed from loose materials placed in the mould and compressed to shape by the plunger. The mould is provided with shoulders 19 so that the rim projects slightly from the web to facilitate machining. In the form shown in Fig. 11, the rim is wound from a strip cut from a plain strip as shown in Fig. 9, so as to comprise alternate projections and recesses, and the preformed web 27 is shaped to fit over the resulting teeth 25 on the rim. In a further modification, Fig. 13, a plain strip is cut and doubled flat so as to have projections 32 on one side and recesses 33 on the other. A ring of rubber or rubberized cloth may be interposed between the web and the rim to produce a sounddeadening effect. A metal hub as described in Specification 359,372 may be provided. Specifications 211,508, 229,662, [both in Class 80 (i)], and 407,876, [Group XXVIII], also are referred to.
Patent GB-748515-A (GB)
Title: Improvements in locking devices for ladders and the like
IPC: E06C7/06
Filed: 1953-08-19
Abstract: 748,515. Extendible ladders &c. CAYLESS, C. W. July 7, 1954 [Aug. 19, 1953], No. 22901/53. Class 20(2). A lockable extendible ladder or the like comprises a fixed portion 1, a slidable portion 2, and a pair of flat, generally A- shaped locking members 6 pivotally mounted by their apices to the inner faces of the side members of the portion 2, and having feet 7, 7a hooking around rungs 3, 4 of the two portions 1, 2, respectively. The feet 7 of the two members 6 are joined by a bar 8. A loop 9 on one member 6 accommodates a control cord 5 which is anchored to a plate 10 secured to the portion 2. When the ladder is extended by pulling on the cord 5, the feet 7a are pivoted away by the rungs 3 of the portion 1, and automatic locking takes place on release of the cord since the feet 7 swing under the adjacent rung 4 by gravity. A spring may be incorporated to swing the feet under the rungs 4. In a modification, the locking members may be pivotally. mounted on the portion 1 of the ladder but in an inverted position.
Patent GB-316268-A (GB)
Title: Process for the manufacture of ortho hydroxy azo dyestuffs containing chromium
IPC: C09B45/16
Filed: 1929-07-26
Abstract: 316,268. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). July 26, 1929. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 27, 1929]. Azo dyes, soluble chromium compounds of. - o-Oxyazo dyestuffs containing chromium are obtained by treating with agents yielding chromium the dyestuffs obtainable by coupling a diazotized o-aminophenol or a nuclear substituted derivative thereof with 1: 7-aminonaphthol or an N-acyl derivative thereof, the components being selected so that at least one contains a sulphonic acid group. When an N-acyl derivative is used the dyestuff may be saponified prior to the chroming. The products dye wool from an acid bath in even shades fast to fulling and light. The following examples are specified. (1) The dyestuff 4-chloro-2-aminophenol-6-sulphonic acid # (in presence of lime and pyridine) 1: 7-aminonaphthol is boiled with chromium fluoride solution; the product gives fast and even greenish bluegrey dyeings on wool from an acid bath. (2) By replacing the coupling component in (1) by its N-acetyl derivative a chromed dyestuff is obtained giving even blue dyeings fast to washing, fulling, and light. (3) By saponifying the dyestuff in (2) prior to the chroming a product identical with that in (1) is obtained. (4) The chro mium compound of the dyestuff 6-nitro-2-aminophenol-4-sulphonic acid # 1-acetylamino-7. naphthol dyes wool a fast blue-grey. (5) The chromium compound of the dyestuff 4-methyl-2- aminophenol-6-sulphonic acid # 1-acetylamino-7-naphthol dyes wool a fast even blue. (6) By saponifying the dyestuff in (5) prior to the chroming a product dyeing wool a fast bluish grey is obtained. (7) The chromium compound of the dyestuff 2-aminophenol-4-sulphonic acid # 1-acetylamino-7-naphthol dyes wool a fast even reddish grey. (8) The chromium compound of the dyestuff 4-chloro-2-aminophenol # 1- acetylamino-7-naphthol-4-sulphonic acid dyes wool a fast bluish grey. (9) The chromium compound of the dyestuff 4-chloro-2-aminophenol-6- sulphonic acid # 1-acetylamino-7-naphthol-4- sulphonic acid dyes wool a bluish grey. Specification 2956/12 is referred to. 1-Acetylamino-7-naphthol-4-sulphonic acid is obtained by acetylating 1-amino-7 -naphthol-4- sulphonic acid with excess of acetic anhydride in cold sodium carbonate solution, saponifying the 0-acetyl group by boiling the solution, and neutralizing with acetic acid. Reference has been directed by the Comptroller to Specification 26460/12.
Patent GB-862498-A (GB)
Title: Hydraulic storage power stations
IPC: F03B13/06
Filed: 1958-07-18
Abstract: 862,498. Hydraulic turbine plant. SULZER FRERES S.A. July 18, 1958 [July 26, 1957], No. 23158/58. Class 110 (3). An hydraulic storage type power station has a turbine set comprising a high-pressure turbine situated below the tail water level, a transfer pump of the type which requires a certain head at its intake and an electric machine which can operate either as a generator or motor, coupled to the turbine and pump. The turbine set is so disposed that the turbine rotor outlet lies at a depth below the surface of the tail water which is approximately equal to the back pressure head required at the turbine rotor outlet, while the inlet to the transfer pump is at a depth below the surface of the tail water which is less than the required pump intake head but is at least as great as the back-pressure head of the turbine. An auxiliary pump is disposed upstream of the transfer pump and has a delivery head which is at least equal to the difference between the required head at the transfer pump inlet and the static head of the tail water level. In the embodiment shown, the turbine 1, electric machine 5 and transfer pump 6 have a common axis 11 disposed horizontally within a machine house 8 at one side of which is the tail water 4. Wa ter is supplied under pressure to the turbine 1 and is discharged to the tail water 4, the difference in height HT between the turbine outlet and the surface 12 of the tail water being approximately equal to the desired back pressure head of the turbine. In order to provide the necessary additional head required at the inlet to the transfer pump 6 (i.e. the difference between the total head required at the pump inlet and the static head of the tail water), an auxiliary pump 14 is disposed upstream of the transfer pump 6, the auxiliary pump taking its suction from the tail water through inlet 15 and discharging to the transfer pump inlets 10 through pipe 20. The auxiliary pump is driven by an electric motor 13. Alternatively, the auxiliary pump may be disposed as at 14<SP>1</SP> in line with the main pump 6 and driven by the motor 5, the inlet to the pump being through pipe 18. In an arrangement in which the axis of the machines is vertical with the transfer pump below the turbine, the turbine is disposed so that the discharge head is equal to the desired value, but the suction head of the pump is less than the desired value so that an auxiliary pump is again necessary to make up for the difference in suction head.
Patent GB-480581-A (GB)
Title: Improvements in or relating to movements for pocket watches or the like having a centrally disposed seconds-hand spindle
IPC: G04B33/10
Filed: 1937-08-24
Abstract: 480,581. Watches. GRUEN WATCH MANUFACTURING CO. Aug. 24, 1937, No. 23235. Convention date, Aug. 25, 1936. [Class 139] In a watch movement having a centrally disposed secondshand spindle C and a coaxially arranged minute hand sleeve A, the drive of the seconds-hand spindle is derived from the third wheel 4 through the intermediary of an auxiliary pinion 7, whereas the drive of the minute hand sleeve A is effected directly by the barrel wheel 2 by means of a centre wheel auxiliary pinion 5 mounted on the minute hand sleeve,
Patent GB-762167-A (GB)
Title: Improvements in and relating to apparatus for separating solid matter from liquids and scraper mechanism for removing solid matter therefrom
IPC: B01D21/04
Filed: 1954-08-10
Abstract: 762,167. Gravity-separation apparatus. SAMBRAUS, A. Aug. 10, 1954 [Aug. 13, 1953], No. 23262/54. Class 46. A scraper mechanism for removing solid matter deposited in a settling tank comprises a girder 17, having scraper blades 18, supported by a frame member 10 having guides 11, 12 supported on rollers 8, 9 on a further frame member 1 supported on rollers 2, 3 in inclined or curved stationary guides 4, 5, which may be adjustable to vary the vertical displacement. The members 1, 10 are reciprocated by crank assemblies 7, 14 having a phase difference of 90 degrees whereby on the scraping stroke the scrapers 18 move along a path substantially parallel to the bottom of the tank. The members may be driven from a single crank pin driving one member and the other through a bell crank lever or a single crank having two crank pins. If the scraper mechanism is of considerable length the number of guides is increased and the frame member may comprise a number of girders arranged end to end. The guides 4, 5 may be mounted on the frame 1 and the rollers 2, 3 on the wall of the settling tank. The liquid and solid matter flows first into an ante-chamber separated from the tank by a plurality of partitions which may be individually or simultaneously vertically movable to regulate the flow.
Patent GB-1466393-A (GB)
Title: Epoxy resin compositions
IPC: C08G59/16
Filed: 1974-05-24
Abstract: 1466393 Epoxy resin compositions DOW CHEMICAL CO 24 May 1974 [4 June 1973] 23273/74 Heading C3B Solid epoxy resin is prepared by reacting (A) a diglycidyl ether of a hydrogenated bisphenol, a polyglycidyl ether of a hydrogenated novolac having an epoxy equivalency of 2À01 to 2À6, or a mixture thereof, with (B) a mixture consisting of (1) 10-25% (based on the total weight of (A) and (B) of an aromatic or cycloaliphatic dicarboxylic acid and (2) 1-10% by wt. (of (A) plus (B)) of (a) a C 4-10  aliphatic dicarboxylic acid, (b) an acid terminated adduct of an aromatic or cycloaliphatic dicarboxylic acid or anhydride with an aliphatic dihydroxyl compound HO(CH 2 -CHR-O) x H or in which each R is independently H, Me, Et, chloro-, bromo- or iodo-methyl, x is 1 to 3 and y is 3 to 10 or (c) a mixture of (a) and (b). (A) and (B) are used in an amount such as to provide an epoxide content of 2-6%, i.e. the weight per cent of epoxide groups, including the constituent carbon atoms of the epoxide ring, based on the weight of the solid epoxy resin, and a softening point of at least 80‹ C. (A) may be the diglycidyl ether of hydrogenated bisphenol A. (B1) may be isophthalic acid and (B2) adipic, succinic, suberic or sebacic acid. (B2) may also be an acid terminated adduct of tetrahydrophthalic anhydride with ethylene glycol, diethylene glycol or 1,4-butanediol. In conjunction with conventional latent hardeners the resins are useful in powder coating compositions.
Patent GB-926495-A (GB)
Title: Improvements in or relating to rotary pumps
IPC: F04C2/02
Filed: 1961-12-19
Abstract: 926,495. Rotary pumps. B. H. REFSON. Dec. 19, 1961 [June 27, 1961], No. 23295/61. Class 110 (2). A rotary pump of the fixed abutment, gyratory piston type, in which a piston 18 is caused to gyrate in a pump chamber 11 by an eccentric pin 26 on a rotary drive shaft 24, comprises a flexible tubular sheath 31 of impermeable material e.g. polyethylene, stainless steel, or polytetrafluoroethylene, which may be corrugated, having its respective ends rigid in fluid-tight manner with the piston and a casing 12 providing the pump chamber, the sheath loosely embracing the driving shaft and the eccentric pin. The piston has a projecting lobe 19 which extends into a recess 13 in the casing 12. A ball bearing 27 has the inner race 28 rigid with the pin 26 and the outer race 29 a tight fit within an axial recess 30 in the piston. Alternatively the bearing 27 may be a plain bearing fitted within the recess 30. The outer end of the sheath is flanged at 32 and may be welded to the casing 12 and/or clamped thereto by an end plate 33, or by studs and interposed sealing rings. In a modification the sheath is separate from the piston, flanged outwardly at the inner end and secured to the piston. In another modification the sheath is extended into the recess 30 and closed to form a cap which contains the outer race of the ball bearing. In another embodiment the pump chamber and piston are of tear-drop shape.
Patent GB-449593-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/02
Filed: 1935-08-20
Abstract: 449,593. Slicing-machines. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO., Ltd., and THOMAS, H., Aden Road, Ponders End, Middlesex. Aug. 20, 1935, No. 23343. [Class 28 (ii)] In a slicing-machine, a substance holder, e.g., an end piece holder, is detachably secured in position on the feed part by engagement with an adjustable member, which supports or partly supports means for clamping the substance when the holder is not in use, in co-operation with at least one other pair of interengaging parts. As shown, the end piece holder 17 is pivoted at 20 to a frame 19 having forked projections 21, 22 which partly embrace the upright 11. The clamp sleeve 13 has a stepped inclined surface 231, 23<3>, 23<2> which, when the sleeve is lowered, engages a corresponding surface 21<1>, 21<3>, 21<2> on the fork 21. The lower fork 22 is recessed on both sides of the post 11 at 22<1>, the recesses engaging with corresponding projections on an adjustable plate 24 secured to the feed table 10. In a modification, the sleeve 13 has a conical bottom portion which engages a correspondingly shaped recess in the upper face of the fork 21. The axes of the cones are slightly offset, so that when the sleeve is lowered, the fork is forced securely against the post. The recesses in the bottom fork are dispensed with, -and the locking against rotation on the post 11 is effected by a slotted lug on the side of the holder adjacent to the post 12 engaging a pin upstanding from the feed tube, or alternatively by providing the holder with a base adapted to engage with one or more of the usual pins on the feed table, or a special pin could be provided on the table for this purpose. The pivot connection 20 is dispensed with. The end-piece holder may be mounted on an upright or uprights, other than the clamp posts 11, 12, in which case the sleeve 13 would have a projecting part to engage the holder to lock it, in association with the other interengaging parts, in the operative position.
Patent GB-988828-A (GB)
Title: Modified polyesters
IPC: H01B3/42
Filed: 1963-06-12
Abstract: Imidocarboxylic acids of the formula <FORM:0988828/C2/1> where R is an inert, aromatic, aliphatic or cycloaliphatic, saturated or unsaturated hydrocarbon radical are made by reacting primary amines with tricarboxylic acid anhydrides.  Examples (1) and (3) describe the reaction of trimellitic anhydride with a fatty amine.ALSO:A method of making a modified polyester comprises reacting at least one polyhydric alcohol with at least one polycarboxylic acid reactive derivative thereof, and at least one monocarboxylic acid as modifying agent, wherein said polyhydric alcohol or at least one of said polyhydric alcohols has three or more hydroxyl groups and/or said polycarboxylic acid or at least one of said polycarboxylic acids has three or more carboxyl groups, wherein the amount of said reaction component or components having three or more reactive groups is at least equal to the amount of monocarboxylic acid or acids used, and wherein said monocarboxylic acid or at least one of said monocarboxylic acids is an imidocarboxylic acid of the formula <FORM:0988828/C3/1> where R is an inert, aromatic, aliphatic or cycloaliphatic, saturated or unsaturated hydrocarbon radical. Polyesteramides may be made by replacing part of the polyhydric alcohol by a polyamine.  The products are suitable for use in impregnating varnishes in admixture with cross-linking agents, e.g. phenolic resins, aminoplasts and polyisocyanates.  In the examples, polymers are made from:-(1) the trimethylol propane monoester of an imidocarboxylic acid derived from trimellitic anhydride and a fatty amine, ethylene glycol and isophthalic acid in the presence of butyl titanate and (3) an imidocarboxylic acid derived from trimellitic acid and a fatty amine and a polyester made by reacting isophthalic acid, trimethylol propane, ethylene glycol and 1:4-butanediol, the products being:-(1) dissolved in xylene and mixed with a butylated melamine-formaldehyde condensate and (3) dissolved in methyl glycol acetate, butyl acetate and xylene and mixed with polymerized phenol-masked toluylene diisocyanate. In Example (2) a solution in xylene of the modified polyester of (1) is mixed with a solution in xylene of a butylated urea-formaldehyde condensate.
Patent GB-260960-A (GB)
Title: A new or improved method of producing artificial coffee oil
IPC: A23L27/28
Filed: 1926-09-22
Abstract: 260,960. Internationale Nahrungsund Genussmittel-Akt.-Ges. Nov. 4, 1925, [Convention date]. Coffee substitutes; coffee preparations.-The aromatic principle of roasted coffee is artificially prepared by reacting one or more heterocyclic mercaptans or bisulphide derivatives thereof, or benzyl mercaptan or derivatives thereof, with at least one organic compound containing at least one carbonyl group. The mercaptans of the furfuryl series may be employed, and the carbonyl compounds may be aliphatic ketones, diketones. and aldehydes. Other compounds present in the natural oil, or homologues or derivatives, thereof may also be added, for example oxygen containing compounds such as phenols or phenol derivatives, or nitrogen compounds such as members of the pyradine, pyrazine or pyrrole series. The carbonyl compounds may be present in at least equimolecular proportions relatively to the mercaptans, and a-oxysulphides are produced by their reaction, which is effected under neutral conditions or in the presence of acetic acid. A list of the substances obtained from natural coffee oil is given and a mixture of all or of some of these may be used in producing the oil. The odour of the synthetic oil may be altered by treatment with sulphuretted hydrogen, which reacts with the carbonyl compounds present, either by passing in the gas or by adding a sulphide and organic acids. The mixture may be heated to develop the aroma. Some of the constituents of the natural oil, e.g. the o-diketones, may be produced in the mixture by the addition of substances which decompose to form them on heating. Esters are also formed on heating from the acids and the alcohols, phenols and mercaptans present. Various methods of mixing the constituents are described, including mixture in the vaporized state, and the use of solid and liquid diluents. Aromatic substances from coffee may be added. The mixture may be employed in treating coffee substitutes, such as corn coffee or chicory, or in flavouring foods &c. In some cases roasted coffee may also be added. Specific examples are given, describing the substances used, the manner of their mixture, and their application to other materials. Specifications 246,454; and 286,152, [Class 2 (iii), Dyes &c.]. are referred to.
Patent GB-149980-A (GB)
Title: Improvements relating to casement adjusters and the like
IPC: E05C17/30
Filed: 1920-08-10
Abstract: 149,980. Finlayson, T. Aug. 16, 1918, [Convention date]. Bulkhead doors.- A casement stay, stated also to be applicable to a holder for bulkhead doors &c., comprises telescopic members 21, 28, Fig. 4, each having a cross-section which is in part camshaped, as shown in Fig. 8. By turning the tubular member 21 by means of a handle 26, the stay members are forced into frictional engagement along the surface 34 to lock the parts in an adjusted position. The member 21 is a rigid tube and is mounted in a pivoted bracket member 16, to which it is secured by shoulders 25 engaging the sides of a slot in the encircling flange 20. Stop members on the members 14, 16 limit the opening movment of the window &c.
Patent GB-149982-A (GB)
Title: Improvements in or relating to the production of resin
IPC: C08F240/00
Filed: 1920-08-10
Abstract: In the production of resins from solvent naphtha by polymerization of the coumarone, indene, &c. present by means of sulphuric acid, the resulting naphtha solution of resin, after neutraliztion of acid present by means of alkali, is washed with an acid weaker than sulphuric acid, for example, hydrochloric acid, prior to distillation.  According to the Specification as open to inspection under Sect. 91 (3) (a), the neutralization by alkali may be omitted and the acid solution washed direct with hydrochloric acid.  This subject-matter does not appear in the Specification as accepted.ALSO:Resins are separated from solvent naphtha by polymerizing the coumarone, indene, &c. present by means of sulphuric acid, the resulting naphtha solution of resin, after neutralization of acid present by means of alkali, being washed with an acid weaker than sulphuric acid, for example, hydrochloric acid, prior to distillation.  According to the Specification as open to inspection under Sect. 91 (3) (a) the neutralization by alkali may be omitted and the acid solution washed direct with hydrochloric acid.  This subject-matter does not appear in the Specification as accepted.