baber/WOPTO huggingface dataset:
Patent GB-1424803-A (GB)
Title: Polymeric compositions
IPC: C08L23/00
Filed: 1972-01-28
Abstract: 1424803 Polynitriles UNILEVER-EMERY NV 26 Jan 1973 [28 Jan 1972] 4179/72 Heading C2C [Also in Division C3] Higher polynitriles containing 20 to 75 carbon atoms, 2 to 4 nitrile groups and not more than 2 C to C double bonds in the molecule are prepared by dehydrating the ammonium salts of the corresponding acids. The acids may be derived from C 16-22  saturated or unsaturated monocarboxylic acids by polymerizing and/or coupling with styrene and optionally hydrogenating. In examples di- and tri-nitriles are prepared by dehydrating ammonium salts of commercially available dimerized and trimerized fatty acids. The polynitriles may be added to polyolefins and polyesters to improve dyeing capacity.
Patent GB-573373-A (GB)
Title: Improvements in or relating to the manufacture of heating cartridges for chemical immersion heaters and chemical immersion heaters containing them
IPC: C09K5/16
Filed: 1943-03-15
Abstract: 573,373. Chemical heating cartridges. CALDWELL, W. A., ASHCROFT, D. G., and IMPERIAL CHEMICAL INDUSTRIES. Ltd. March 15, 1943, No. 4187. [Class 64 (ii)] In the manufacture of a chemical heating cartridge adapted for use in chemical immersion heaters, containing inorganic oxidising and reducing agents yielding non-gaseous products, the heating composition is loaded into an asbestos paper tube closed at one end, compacted by a press plunger while supported in a press chamber, the end closure of the press chamber is removed while maintaining the plunger in contact with the composition, and the plunger is then advanced to expel the cartridge. Preferably the plunger is maintained, after compacting, in contact with the composition under reduced pressure insufficient to expel the cartridge when the end closure is removed, and the pressure is then increased in order to expel the cartridge. The sequence of operations may be automatically controlled. The plunger may have a protuberance on its working end to recess the end surface of the composition to receive an igniter. The heating composition may comprise calcium silicide 46 per cent., hammer-scale 46 per cent., china clay 8 per cent., with an upper layer of calcium silicide 28.5 per cent., red lead 67 per cent., china clay 4.5 per cent. A metal spacer rests on the surface of the charge, which is ignited by a quickmatch fuse terminating in a bead comprising red lead 69 per cent., calcium silicide 29 per cent., nitrocellulose 2 per cent. A gas filter pad of asbestos wool is added, and a closure through which the fuse is accessible.
Patent GB-1203192-A (GB)
Title: Watch crown
IPC: G04B37/10
Filed: 1969-02-12
Abstract: 1,203,192. Watches. UNITED STATES TIME CORP. Feb.12, 1969 [Feb.29, 1968], No.4289/69. Heading G3T. A waterproof watch comprises a crown 1 having a cavity within which an annular elastic gasket 6 is compressed between the crown and the pendant 8 and is retained by an annular hard washer 7 which limits sidewise motion of the crown, and is such that C R #<SP>I</SP>/ 2R  where C R  is the clearance between the washer inner surface and the pendant outer surface and I R  is the interference between pendant outer surface and the gasket inner surface, when the gasket is assembled in the crown body and before it is compressed as in the assembly illustrated in Fig.1. Alternatively when the gasket is bent as is the gasket 13 Fig. 3, C R #C GC  where C GC  is the radial clearance between the flat gasket  gasket 13 and the crown, when the pendant is in  position in the crown. Reference has been directed by the Comptroller to Specification 1,122,140.
Patent GB-922842-A (GB)
Title: Improvements in or relating to the production of ceramics
Inventor: TOPLEY BRYAN
IPC: C04B33/02
Filed: 1959-02-06
Abstract: A composition for use in the production of ceramic bodies comprises a conventional ceramic mixture and a calcium silicate-fluoride mixture, which may be incorporated therein in an amount up to 75% by weight of the composition.  The calcium silicate-fluoride mixture, which prevents moisture expansion, may be obtained as a co-product from the reduction of calcium phosphate and silica in the "furnace" production of phosphorus or by fusing together in molecular proportions constituents as follows:- CaO 12 to 20, SiO2 10 to 16 and CaF2 1 to 5 moles.  An example of the latter method is given in weight proportions: limestone 85 parts, SiO2 44,5 parts and CaF2 8,2 parts.
Patent GB-660475-A (GB)
Title: Improvements in preparation of trihalogeno-olefinic compounds
IPC: C07C22/04
Filed: 1949-02-17
Abstract: 1,1,3-Trihalogeno-olefines of formula X2C = CR-CXR1R11, where X is bromine or chlorine, R and R1 are hydrogen, methyl, phenyl, carboxyl and groups hydrolysable to carboxyl, carboxyalkyl and groups hydrolysable to carboxyalkyl and acyloxyalkyl; R11 is the same as R or R1 or is alkyl, aryl, alkenylalkyl and aralkyl; and R is hydrogen when both R1 and R11 are hydrogen, are made by treating a compound of formula X3C-CR = CR1R11 (X, R, R1 and R11 being as defined) at a temperature in the range of -50 DEG  to 200 DEG  C. in the presence of an acidic catalyst.  A preferred temperature range of 25-125 DEG C. is given.  Catalysts specified are Friedel-Craft catalysts, e.g. ferric chloride, zinc chloride and boron trifluoride and sulphuric acid, which is generally preferred.  Quantities of catalyst specified range from 0.1-5.0 per cent by weight.  Inert diluents such as acetic acid or n-hexane may be present.  Reaction times of 1-48 hours are quoted.  Groups specified as hydrolysable p  to carboxyl are carbalkoxy, carbaryloxy, carbaralkoxy, carbonitrilo and carbamyl, and as hydrolysable to carboxyalkyl are carboxymethyl, carboxynonyl and carbonitrilo-methyl. Acyloxyalkyl groups specified are acetoxymethyl, acetoxyethyl and benzoyloxymethyl.  R11, when aryl, may be substituted by such groups as chloro, fluoro and methoxy.  At least one R is preferably hydrogen.  Many compounds are specified as starting material and products, representative being 3,3,3-trichloro- and tribromo-propene, which yield 1,1,3-trichloro- and tribromopropene respectively, and 3,3,3-trichloro-1-acetoxymethyl-, 3,3,3-trichloro-1,1-diphenyl-, 3,3,3-trichloro-1,3-dicarboxy- and 3,3,3-trichloro - 1 - nitrilo - propene, which respectively yield 1,1,3 - trichloro - 3 - acetoxymethyl-, 1,1,3-trichloro-3,3-diphenyl-, 1,1,3-trichloro-2,3-dicarboxy- and 1,1,3-trichloro-3-nitrilo-propene.  In an example, 3,3,3-trichloropropene is refluxed for 22 hours in glacial acetic acid in the presence of a minor quantity of conc. sulphuric acid and 1,1,3-trichloropropylene isolated by pouring the reaction products into ice water and fractionating the separated organic layer.
Patent GB-229662-A (GB)
Title: Improvements in and relating to noiseless gears and methods of making the same
IPC: F16H55/42
Filed: 1925-02-17
Abstract: 229,662. British Thomson-Houston Co., Ltd., (Assignees of Carver, J. H.). Feb. 19, 1924, [Convention date]. Toothed and friction gearing. - Gear blocks of the kind built up from layers of textile material such as canvas or duck coated with synthetic resin are produced by cutting the material by rotating cutters &c. into two or more strips in the manner shown in Fig. 1 and winding the strips as shown in Fig. 3 to form. complete discs or continuous helices of material. The dises or helices are placed in a press in which they are heated under pressure to form a consolidated whole. The points of the lightly-connected triangular strip elements 15 may be removed if the blank is to have a metallic hub, and the bases of the elements may be curved so that the peripheries of the completed discs are approximately circular. If the rim and hub of the blank are to be thicker than the web, lightly-connected washers are stamped from the textile material and inserted at the rim and hub so as to alternate with the triangular elements, or they may be replaced at the hub by chopped trimmings, which may be previously consolidated.
Patent GB-449042-A (GB)
Title: Improvements in or relating to hose-unions
IPC: F16L33/01
Filed: 1935-02-11
Abstract: 449,042. Hose unions. SUPERFLEXIT, Ltd., and GRINT, W. H., Trading Estate, Slough, Buckinghamshire. Feb. 11, 1935, No. 4372. [Class 99 (i)] In a hose union having a helically-grooved hollow plug 10 which is screwed into the end of a hose provided with helical internal armouring 14, the plug is formed with a plain sealing surface 17 adapted to coact with the end portion 18 of the inner surface of the hose body 13 and compress it within an external sleeve 19, the armouring being removed from the hose end by the plug during the screwing operation. In the form shown in Fig. 1, the groove 15 of the plug terminates short of the outer end of the latter in an annular groove 16 of the same or of double width which, when the plug is inserted in the hose, removes the armouring by compressing it in an axial direction. The plug may be formed integrally with or separately from the head 11, and is tapered, with, if desired, a sealing surface of greater taper. Fig. 4 shows a construction in which the sealing surface is afforded by a sleeve 23 which surrounds the plug and is tapered at its inner end 24, and Fig. 5 a modification in which the plug is grooved internally to receive the armouring and its exterior constitutes the sealing surface. Specification 290,972, [Class 99 (i)], is referred to.
Patent GB-524904-A (GB)
Title: Improvements in and relating to electrical frequency changers
IPC: H02K47/20
Filed: 1939-02-10
Abstract: 524,904. Control of A.C. motors; dynamoelectric machines. TURNER, Ltd., E. R. & F., and KREBS, E. W. Feb. 10, 1939, No. 4426. [Class 38 (iii)] [Also in Group XXXV] The primary 1 of the motor of a motorgenerator set is arranged for .star-delta starting by means of a switch 5, and the primary 2 of the generator is permanently connected to the terminals of the motor short-circuited in the star connection. Thus a period of variable frequency generation is avoided and the switch 5 may be held electromagnetically or mechanically in its star position until the desired speed is reached.
Patent GB-1242995-A (GB)
Title: Electroless nickel plating on a nonconductive substrate
IPC: G03F1/54
Filed: 1970-01-30
Abstract: 1,242,995. Electroless Ni plating. INTERNATIONAL BUSINESS MACHINES CORP. Jan. 30, 1970 [Feb. 19, 1969], No. 4506/70. Heading C7F. A non-conductive substrate is coated with Ni by a method comprising (a) sensitizing (b) activating (c) electroless Ni plating the substrate (d) heating the plated substrate to remove moisture therefrom and (e) repeating steps (b)-(d) at least once to thicken the Ni coating. The substrate may be glass, ceramic, plastics, paper or wood and maybe first cleaned in, e.g., hot chromic acid, detergents, NaOH, peroxides, permanganates, gaseous oxidants or HNO 3  or etched in HF and NH 4  F, and rinsed. Sensitization is by SnCl 2 , Sn(BF 4  ) 2  , TiCl 3  or HBF 4  to which may be added a pH adjuster, e.g. HCl, H 2 SO 4 , NaOH or NH 4  OH, and after rinsing, activation is by immersion in a solution of a salt of Pt, Pd, Ag or Au. Nickel plating is from an electroless solution comprising (a) Ni<SP>++</SP> ions, e.g. from NiSO 4  or NiCl 2  (b) a reducing agent such as HCHO or Fehling's solution (c) an alkali, e.g. NaOH or NH 4 OH and (d) a complexing agent, e.g. EDTA. The plated substrate is heated, preferably in vacuo for 20-60 minutes at 50-130‹ C., and the activation, plating, and heating cycle is repeated. An example relates to Ni plating of glass wherein the first Ni coat is up to 300Š, and the next layer adds up to a further 1700Š.
Patent GB-753612-A (GB)
Title: Improvements in hydrometer floats
IPC: G01N9/14
Filed: 1954-02-16
Abstract: 753,612. Determining specific gravity. SHRUBSALL, G. W. G. Feb. 2, 1955 [Feb. 16, 1954], No. 4542/54. Class 97 (3). A hydrometer float 4 has a spacer 9 which is constructed separately from the float and is fitted on the float so as to project laterally therefrom in order to prevent the float from coming into contact with the sides of the hydrometer 1 when the float is floating in a liquid contained in the hydrometer. Spacer 9 is made of thin sheet material, such as celluloid or plastic. It may be circular as shown, or it may be triangular, polygonal or wavy-edged. The spacer has a central aperture whereby it fits tightly on the stem 7 of the float. The aperture may be star-shaped, or have radial slits, so that it may fit over stems of different sizes.
Patent GB-999864-A (GB)
Title: Releasable clamping device
IPC: E06B9/36
Filed: 1964-02-03
Abstract: 999,864. Clamps. C. M. KIRTLEY, and R. J. ELDREDGE. Feb. 3, 1964, No. 4546/64. Headings E1J and E2B. A clamp for releasably clamping to a stationary member 16 a U-shaped structure 31, e.g. the upper and lower housing 11, 12 of a vertical louver assembly, comprises a clamp 14 with a base 27 and an arm 38 pivotally mounted on a boss 34 on the base, the base being adapted to be secured to the stationary member and to have the end edges of the legs of the U-shaped structure placed thereon to support the structure 31, the arm having opposite turned up ends 42, 43 movable from a released position spaced laterally from the legs to a clamped position adjacent the legs so that the shoulders lie between the arm ends and the base. A finger portion 36 extends outwardly from the arm 38 to an inclined section 51 and a flat bottom section 52 which forms a right angle and has an upturned ear 53. The shoulders 60 are formed by bending back flanges 56, 57. In assembly the finger portion 36 is rotated to allow the legs 31, 32 to be seated in the base against flanges 28, 29 and rotated back so that the leading edges 44, 47 of the arm ends engage the shoulders 60 forcing the ends 58 against the base 27. The finger portion 39 has a protrusion 54 (Fig. 7 not shown) which in the clamping position is moved past the adjacent leg edge 58 to hold the finger portion in a semi-locked position. The louver assembly described comprises the housings 11 and 12, louvers 13 and an operating structure 21 connected to the upper and lower ends of each louver by a louver stem 22 reciprocally held in the structure by a spring 23. Each louver is held taut by a button hook 24 which hooks in an opening in the lower end 26 of the louver stem but can be easily disengaged by pulling the stem away from its housing.
Patent GB-103221-A (GB)
Title: Improvements in Garments.
Inventor: HARVEY JOHN LILBURN
IPC: A41B1/04
Filed: 1916-03-28
Abstract: 103,221. Harvey, J. L. March 28, 1916. Skirt parts; trousers; drawers.-The crutch flap c, Fig. 1, which is attached to an inverted U or V-shaped opening in the rear of a skirt, coat, &c. to convert it into a combination garment, is made from one or two pieces shaped as shown in Figs. 4 to 9. It is attached in front behind the edges k<1> of the divided front part.
Patent GB-1455569-A (GB)
Title: Container checking
IPC: B67C7/00
Filed: 1973-01-30
Abstract: 1455569 Sorting bottles before passing them to filling apparatus UNIGATE Ltd 29 Jan 1974 [30 Jan 1973] 4631/73 Heading G1A Bottles passing along on a conveyer 1 are captured by a starwheel 4 and brought via a scanning system, consisting of a light source and one or more photo-cells, that provides a reject signal if the bottle is unsuitable (because of size or the presence of a foreign body). The reject signal actuates mechanical means to retain the bottle in the starwheel 4 and prevent if from being captured by a further starwheel 5 in the processing chain leading to the filling apparatus. The means preventing the rejected bottle from passing to the next starwheel 5 may comprise cam actuated clamping devices 18 whose arms 26 are caused to grip its corresponding bottle. This happens whenever a reject signal activates a member 24 pushing its corresponding cam follower 20 from one side of the cam to the other. The clamping device 18 is returned to its original in-operative device by a discontinuity in the cam surface as shown at 30. The deflector is actuated by a reject signal to prevent the rejected bottle being captured by the next starwheel.
Patent GB-610005-A (GB)
Title: Improvements in processes for dissolving crude calcium aluminates
IPC: C01F7/12
Filed: 1940-03-12
Abstract: Crude calcium aluminate to be purified by washing are dissolved in water &c. containing a little alkali, e.g. sodium carbonate, preferably less than 1 gm. per litre.  There may also be present salts, e.g. alkali metal or alkaline earth sulphides, sulphates, or chlorides to prevent silica from dissolving.  The alkali concentration may be limited by precipitating excess by a treatment with carbon dioxide so regulated as to precipitate alumina with the required quantity of alkali, or by adding hydrochloric or sulphuric acid or their calcium &c. salts.
Patent GB-717175-A (GB)
Title: Improvements in or relating to circular looms
Inventor: LOW ROBERT NORRIS
IPC: D03D37/00
Filed: 1952-02-22
Abstract: 717,175. Circular looms. FATRWEST (U.K.). Ltd. Feb. 23. 1953 [Feb. 22, 1952], No, 4719/52. Class 142(2) In a circular loom in which the healds are moved by cams, auxiliary cams move the healds to an extreme position to uncover the shuttles. A heald a is moved for shedding by a cam n through a linkage b, c, f, k and is returned by a spring g. To uncover the shuttles, a rod s is raised and a hook t thereon engages a projection u on the member k and rotation of a cam q moves a lever o and the rod s draws the heald to an extreme position. A hook x engages a hooked member v to retain the heald in that position. The rod s and the hook x may be raised by an electromagnet operated by a stop-motion or by hand.
Patent GB-1096742-A (GB)
Title: Method of detecting harmonic distortion
IPC: G01R23/02
Filed: 1965-02-03
Abstract: 1,096,742. Detecting harmonic distortion. POLITECHNIKA SZCZECINSKA. Feb. 3, 1965 [Feb. 3, 1964], No. 4750/65. Heading G1U. Harmonic distortion in a supply is determined by connecting an ammeter in series with a resistive load across the supply, replacing the resistive load by a capacitive one and comparing the two meter readings. The meter is calibrated in terms of current and voltage overload coefficient and the capacitor and resistor preferably have the same impedance at the fundamental frequency.
Patent GB-692451-A (GB)
Title: Improvements in wall boxes for housing directories and other books
IPC: A47B19/04
Filed: 1951-02-27
Abstract: 692,451. Cabinets. BRELAZ, R. Feb. 27, 1951 [Feb. 27, 1950]. No. 4790/51. Class 52(i) (Also in Group XXV] A wall cabinet for a telephone directory has a hinged lid 3 to which the directory 12 is secured by a plate 14, hinged to a flange on the lid, the plate having pins 16 entering holes in the directory. The opening movement of the lid is checked by springs 11 and the lid is retained closed by the engagement of fastening elements 8 with hooks 7 on the lid (see Group XXV). A handle 6 is turned to release the lid, a spring 19 assisting the opening movement.
Patent GB-394756-A (GB)
Title: Improvements in and relating to electric welding apparatus
IPC: B23K9/073
Filed: 1932-02-18
Abstract: 394,756. Arc-welding. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and POLLOCK, A. A., Croxton House, Sherbourne Place, Leamington Spa. Feb. 18, 1932, No. 4874. [Class 39 (iii).] The feed is effected by a D.C. motor F having its armature supplied with constant current and its field G arranged across the arc, the motor being coupled to torque - balancing means comprising a spring adapted to store energy during the feed and to withdraw the electrode when the arc voltage falls below a predetermined value. The balancing means is a brake drum L retarded by a belt N carrying a weight Wand driven by the feed roller shaft through a spiral spring M. The motor armature is fed by a constant voltage exciter B. Regulating resistances I, H are arranged in the armature and field circuits of the motor.
Patent GB-431881-A (GB)
Title: Improvements in and relating to pianoforte musical instruments
IPC: G10C3/04
Filed: 1934-02-14
Abstract: 431,881. Pianofortes. KNIGHT, A. E., 40, Amhurst Park, Stoke Newington, London. Feb. 14, 1934, No. 4886. [Class 88 (ii)] In a doubly overstrung grand pianoforte the two sets of hitch-pins 6, 7 for the outer ends of the two sets of bass strings 3, 4 overlap, pins 6 being stepped to a higher level on the frame. The two sets of bass strings 3, 4 co-operate at different levels with a duplicate soundboard bridge 8, 9, and pass under a capo d'astro bar 16, through a slot in the frame, and over a flange 14 to the tuning-pins. The strings 4 may pass under the bridge 9. The capo d'astro may be formed as a curved ridge on the under side of the bar 16 which is integral with the frame. The wrest-plank may be in sections and is held between flanges on the underside of the frame. The soundboard may be held by T-shaped projections 21 provided on the frame or on the bar 16.
Patent GB-1502364-A (GB)
Title: Manufacturing of patterned deep pile circular knitted fabric
IPC: B44F1/12
Filed: 1975-02-05
Abstract: 1502364 Re-cycling carded waste: high pile knitting machines BUNKER RAMO CORP 5 Feb 1975 [29 April 1974] 4922/75 Headings D1C and D1N In a circular deep pile knitting machine a plurality of fibre feeding devices for supplying pile fibre to the knitting needles 12 have means to scavenge fibres remaining on the clothing 25 of the doffer 24 and uniformly return these fibres pneumatically to the feeding path in isolation from other fibres. A cleaning brush 30' scavenges the doffer clothing and is located in a hood 41 which collects the fibre and feeds it back via ducting and a fan 43 to the surface of a carding cylinder 22. Alternatively the fiber is fed to the sliver being introduced to a carding cylinder, Fig. 7, the sliver travelling on a foraminous belt 55. Where the fibres are fed to the carding cylinder its surface may be foraminous. An air jet 17 is provided to blow fibre from the knitting needles 12 and these fibers also are re-cycled. Re-cycling of fibres occurs while a single fibre type is being fed through the card and prevents build up of fibres on the doffer 24 when they are not being selected by the knitting needles 12. When the fibre type is changed e.g. by feeding sliver from a second set of feed rollers 20' a second scavenging brush 70 acting on the carding cylinder may be employed to purge the system of the original fibres, these fibres being carried to waste. Brush 70 is movable into register with the carding cylinder by a pneumatic actuator 75 when a change is required by the knitted fabric pattern selection. The depth of register of brush 30 is also adjusted by an actuator 30c to completely scavenge the doffer surface during a fibre change, at other times a proportion of the fibre being left on the doffer. Actuators 75 and 30c are controlled by a delay circuit Fig. 9 (not shown). Feed of sliver to the carding cylinder is controlled by a pneumatic sensor 90, Fig. 10, which controls a motor 105. Motor 105 drives a differential gearbox 108 in the drive line to feed rollers 57, 110 and modifies the drive speed to maintain an even fibre feed despite deposit of re-cycled fibre on the feed sliver. A clutch 113 is provided for selection of the appropriate sliver feed. In an alternative embodiment the motor controlled by the sensor is the main feed drive motor. Alternative sensors may be piezoelectric, beta ray or capacitance types.