baber/WOPTO huggingface dataset:
Patent GB-658397-A (GB)
Title: Improvements relating to terminal housings for electric kettles and the like
IPC: H05B3/06
Filed: 1949-10-24
Abstract: 658,397. Two-part couplings. BRITISH THOMSON-HOUSTON CO., Ltd., and SIMS, W. J. Oct. 24, 1949, No. 27272. [Class 38 (i)] In a terminal housing for an electric kettle or the like and of the kind which comprises a brass body 2 clamped against the kettle body 1 by a shroud ring 7 with the interposition of a rubber washer 8 and fibre washer 9, a joint is formed between the body 2 and an insulating disc 10 carrying the connecting-pins 12 and parts of a thermal cut-out 11, by a rubber washer 17 situated between steps 15, 16 provided on the parts 2, 10, respectively, whereby water which has leaked through the joint between 2, 8 and along the thread between the body 2 and shroud ring 7, as indicated at 19, is prevented from being sucked into the interior of the body on cooling of the latter. To ensure correct relative positioning of the parts of the cut-out 11 carried by the disc 10 and body 2, respectively, the latter has a step 18 which, when the member 10 is assembled to the body by screws engaging lugs (not shown) therein, engages the members 10. A space may be left between the washer 17 and the inner cylindrical surface of the body 2 to take any excess rubber or, alternatively, a groove may be provided for this purpose in the cylindrical surface of the disc, or the washer may be of sponge rubber or of tubular section.
Patent GB-491758-A (GB)
Title: Improvements in or relating to electron image dissecting apparatus
IPC: H01J31/42
Filed: 1937-10-07
Abstract: 491,758. Image dissectors. ZEISS IKON AKT.-GES. Oct. 7, 1937, No. 27279. Convention date, Nov. 13, 1936. Drawings to Specification. [Class 39 (i)] The stop-like anode of an image dissector is made like an electron lens comprising two or more apertured electrodes and means are provided for varying the potential of one or more electrodes for controlling the effective aperture of the stop. Preferably three electrodes are provided, the inner one being at a variable negative potential with respect to the photoelectric cathode. In another form four electrodes are formed into closely spaced pairs ; preferably the inner adjacent electrodes of the two pairs are conductively connected to enable them to be maintained at the same negative potential with respect to the cathode. The electrodes may be apertured discs mounted together in an insulating ring which rests on the envelope.
Patent GB-941364-A (GB)
Title: Metal cleaning and polishing compositions
IPC: C11D3/12
Filed: 1960-08-05
Abstract: A metal polishing composition which is especially suitable for cleaning silver comprises (a) a -phase calcined alumina in particulate form such that 90% or more passes a 325 mesh (Tyler) sieve, and (b) an anionic or non-ionic water-soluble detergent, the weight ratio of (a) to (b) being 50 : 1 to 1 : 1.  In general (a) comprises 5-45% by weight, (b) comprises 2-30%, the ratio of (a) to (b) is 10 : 1 to 1 : 1 and the composition includes 50-90% water.  It is preferred that the alumina consist of hexagonal crystals whose long dimension is about 0.8m  and whose thickness is about 0.2m . The detergent (b) is suitably a C8-22-soap, and preferably triethanolamin stearate, but many other suitable soaps and anionic and non-ionic synthetic detergents are specified, It is preferred to produce the composition in paste form, and to stabilize the paste 0.005-5% of a gelling agent, e.g. methyl-, hydroxypropylmethyl-, and sodium carboxymethyl-cellulose, polyvinylpyrrolidone, or Irish moss gum, is incorporated.  A humectant, e.g. glycerol, propylene glycol or sorbitol, in amounts of 0.1-10%, and up to 5% of such salts as sodium carbonate or trisodium phosphate, are generally also included. Perfume, colour, tarnish inhibitors, and bactericides such as hexachlorophene may also be present and the composition may be compounded in any order providing that a temperature of 100 DEG  C. is not exceeded during mixing; if soap is to be used, it is preferred that the fatty acid and the soap forming base be added separately to form the soap in situ.  In a preferred embodiment, the composition is contained in an aerosol type dispenser, in which case the composition contains a propellant, such as propane, isopropane, butane or isobutane, in amounts of 1-20%. Alternative propellants which may be used include compressed air or compressed nitrogen.
Patent GB-229262-A (GB)
Title: Improved motor drive for sewing machines
IPC: D05B69/12
Filed: 1924-11-15
Abstract: 229,262. Maimin Speed Control Corporation, (Assignees of Maimin, H.). Feb. 14, 1924, [Convention date]. Variable - speed belt gearing. - A frame 5 bolted to the underside of a sewing - machine standard carries a motor 7 the shaft 10 of which carries a coned loosepulley 12 and a coned fast pulley 11 stepped slightly from the loose pulley and having a cylindrical part with a groove 15. Rods 21 are slidably mounted in a plate 18 on the motor frame, and a cross-head 22 carried by the rods slides against a spring 33 on a rod 20 fixed to the plate 18. The cross-head 22 carries rods 23, 25 and a roller-carrying arm 24. The frames 21, 22 can be shifted against the spring 33 by a treadleoperated bell-crank 27 so that the roller 26 aided by the arm 25 shifts the machine-belt 6 on to the pulley 11. The travel of the frame is limited by a collar 32. The machine is started at very low speed by the slipping engagement of the belt with the upstanding edge of the fast-pulley, the slip decreasing as the belt is moved across the conical part of the pulley. A brake-arm 34 pivoted to the end of the rod 20 carries at one end a shoe 35, which engages the inside of the loose pulley 12. At the other end, the arm 34 carries a set-screw 36 which is pressed upon by one of the rods 21 to apply the brake as the arm 25 moves the belt on to the loose pulley. Specification 223,917 is referred to.
Patent GB-153290-A (GB)
Title: Catalyzer for the synthetic manufacture of ammonia and process of producing same
IPC: C01C1/04
Filed: 1920-09-27
Abstract: Catalysts for use in the synthesis of ammonia are prepared by heating to a temperature below 500 DEG  C., in a neutral atmosphere, complex cyanides of alkali metal and iron in which the molecular proportion of alkali metal cyanide to the iron cyanide is less than 2 : 1; by the use of these catalysts the synthesis of ammonia can be carried out at a temperature below 400 DEG  C. while using a pressure less than 100 atmospheres.  Suitable initial compounds are triammonium-potassium-ferrocyanide, potassium-ferrous-ferrocyanide (Everitt's salts), potassium-ferric-ferrocyanide (Williamson's violet).  The Specification as open to inspection under Sect. 91 (3) (a) includes the preparation of catalysts by heating to a temperature preferably below 500 DEG  C., the simple cyanides of the metals of the iron groups; or the complex cyanides of the alkali and alkaline earth metals and of the metals of the iron group in which the above-mentioned proportion obtains; or mixtures of such cyanides not containing alkali or alkaline earth metals, together with a compound of such metal, for example potassium nitrate; in particular, ferrous cyanide, ferrocyanhydric acid, and ammonium ferrocyanide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1118602-A (GB)
Title: Copolymers containing repeating tetramethylene oxide units and repeating cyclohexane-1-methylene-2-methylene oxide units
IPC: C08G65/20
Filed: 1965-06-29
Abstract: The invention comprises copolymers containing tetramethyleneoxy-repeating units and cyclohexane - 1 - methylene - 2 - methyleneoxy- and/or the 4-methyl homologue thereof repeating units and having a number average M.W. of 1000 to 6000 and having a narrow molecular weight distribution which is characterized by less than a 30% deviation from the minimum value of a monodisperse copolymer of the same molecular weight.  The per cent deviation is defined as equal to <FORM:1118602/C3/1> wherein [c ] is the inherent viscosity of a poly disperse sample and [c 0] is the inherent viscosity of a mono disperse sample of the same molecular weight.  The copolymers are prepared by (1) continuously passing a reaction mixture comprising THF and trans-8-oxabicyclo[4.3.0]-nonane and/or trans-3-methyl-8-oxabicyclo-[4.3.0]-nonane and a catalyst through a reaction zone having a length to diameter ratio of at least 50:1 at a temperature of from - 5 DEG  to 55 DEG  C. and at a rate of flow such that the volume of said reaction mixture in said reaction zone traverses said reaction zone within a period from 2 to 60 minutes, whereby partial polymerization is accomplished, (2) mixing with the mixture produced, a catalyst neutralizer to stop polymerization before the relative amounts of monomer and polymer in the reacting solution become constant under constant temperature, catalyst concentrations and rate of flow, and then (3) separating said copolymer from the mixture.  The catalyst may be fluorosulphonic acid and the neutralizer is preferably water.
Patent GB-773298-A (GB)
Title: Improvements in or relating to ophthalmic mountings
IPC: G02C5/22
Filed: 1955-09-27
Abstract: 773,298. Hinges and pivots. FLEMING, Ltd., J. & R. Sept. 27, 1955 [Dec. 9, 1954], No. 27535/55. Class 65 (2). A pivot for a spectacle frame comprises inter - engaging apertured ears 19, 20 and 21 connected by a non- metallic (e.g. nylon) friction sleeve 26 which is urged against the walls of the apertures by a resilient selfexpanding member 27. The member 27 is preferably made from sheet spring stainless steel and may be in the form of a longitudinally split cylinder, a spiral spring or a helical spring. The longitudinally split cylinder may have transverse cuts 36 to form a separate pair of resilient flaps 35 corresponding to each apertured ear.
Patent GB-426792-A (GB)
Title: An improved locking device for loose covers and the like
IPC: F16B5/02
Filed: 1933-10-09
Abstract: 426,792. Bolting. PRENDERGAST, R. S., 116, Fordwych Road, Cricklewood, and SQUIRE, A. C. A., 122, Delaware Mansions, Maida Hill, both in London. Oct. 9, 1933, No. 27761. [Class 89 (i)] The cover 3 is secured to the member 5 by the screw 6, which, when it is screwed down expands the washer 8 to engage the sides of the hole 2 in the cover. This hole is larger in diameter than the screw head or nut so that after a few turns in the unscrewing direction the cover can be lifted off without completely removing the screw. The screw head may be contained in a recess in the cover. When the nut is of the wing type two slots are formed in the cover for the passage of the wings. In a modification, Fig. 13, a spring 25 retains the washer 8 in contact with the screw head.
Patent GB-1122922-A (GB)
Title: Apparatus for the measurement of dielectric loss
IPC: G01N27/22
Filed: 1966-07-04
Abstract: 1,122,922. Measuring moisture content. CANADIAN INDUSTRIES Ltd. July 4, 1966 [July 21, 1965], No.29833/66. Headings G1N and G1U. Apparatus for measuring the moisture content of e.g. granular material comprises a tunable detector circuit connected to a recording peak voltmeter and electro-magnetically coupled to a stabilized oscillator circuit. The material is passed through the inductor or capacitor element of the tuned circuit whereby increasing dielectric loss with moisture content reduces the peak voltage as the circuit is swept through resonance with the oscillator e.g. by a motor driven rotary capacitor or a capacitor diode. Alternatively the detector circuit may be fixed and the oscillator tuned.
Patent GB-277192-A (GB)
Title: Improvements relating to the manufacture of faced or ornamental concrete and (or) cement building blocks, slabs, tiles and the like with return ends or faces
IPC: B28B11/06
Filed: 1926-11-08
Abstract: 277,192. Wilson, W. Nov. 8, 1926. Faced blocks.-To produce faced ornamental corner or angle blocks, a concrete slab 1 with dovetailed edges is cast and the surface 2 ornamented with stone chips, beads, or like materials in the manner described in Specifications 147,983 and 253,330. The completed slabs after hardening. are used as liners for the walls of the mould in casting the main concrete block which is faced at 2a similarly to the slab. Fig. 3 illustrates a mould having a block with two ornamental sides and top in the left-hand compartment and with one ornamental side and top in the right-hand compartment.
Patent GB-748403-A (GB)
Title: Production of mottled or variegated effects in asphalte
Inventor: CHISHOLM WILLIAM DOUGLAS
IPC: C08L95/00
Filed: 1952-11-07
Abstract: A hard coloured mastic consists of a fusible synthetic resin, a high-melting coumarone resin, a petroleum flux oil, pigment and aggregate, e.g. sand. Cresol-, phenol-, diphenylol propane-, aromatic amine-aldehyde resins, which may be glycerol esterified, are specified.  Specifications 212,106, 212,188, [both in Class 22], and 550,594, [Group V], are referred to.ALSO:A hard coloured mastic consists of a fusible synthetic resin, a high-melting coumarone resin, a petroleum flux oil, pigment and aggregate.  The oil is defined.  In a modification, part or all of the synthetic resin is replaced by asphaltic bitumen.  Specified resins are those of diphenylopropane aldehyde (glycerol esterified), cresol - aldehyde (glycerol esterified or not) phenol - aldehyde (glycerol esterified) and aromatic amine aldehyde. Different coloured mastics can be mixed for a variegated effect. The mastic is used by applying it, roughly ground, to an asphalt surface while the latter is still hot, and, as the mastic softens, smoothing and spreading it to give a coloured surface layer. Specifications 212,106, 212,188 [both in Class 22], and 550,594 are referred to.
Patent GB-489349-A (GB)
Title: Method of manufacturing rubber-like materials
Filed: 1936-10-16
Abstract: Rubber-like materials are prepared by causing materials yielding sulphur to act upon materials having the formula (XCnH2n)2Sm where X is a halogen.  For example, a solution of sodium or ammonium polysulphide is sprayed into a chamber filled with gaseous dichlorodiethyl sulphide.
Patent GB-772106-A (GB)
Title: í¸-hydrocortisone production
IPC: C07J75/00
Filed: 1955-10-04
Abstract: D 1-Hydrocortisone is obtained by hydrolysing a substantially oxygen-free solution of 11b ,17a  - dihydroxy - 21 - acetoxy - 1,4 - pregnadiene - 3,20 - dione with at least a molar equivalent calculated on the starting steroid, of an alkali-metal bicarbonate, e.g. potassium bicarbonate, in a substantially oxygen-free solution of a mixture of lower alkanol and water and continuing the reaction at a temperature between 10 DEG  and 30 DEG  C. while protecting the mixture from atmospheric oxygen, neutralizing the saponified mixture with an aqueous solution of an acid and isolating the thus-produced D 1-hydrocortisone. The neutralization may be effected below 30 DEG  C. with dilute aqueous acetic acid.
Patent GB-704652-A (GB)
Title: Dampening devices
IPC: G01G23/08
Filed: 1952-11-10
Abstract: 704,652. Weighing apparatus. HADLEY .ASSOCIATES, Inc., H. A. Nov. 10, 1952 [Dec. 11, 1951], No. 28284/52. Class 143 [Also in Group XXXII] A lever 7 of a weighing scale has endparallels 8 connected by a check link 9, ;and is mounted on fulcrum stands 6. Movement of the lever 7 is damped by a pneumatic dashpot 14 (see Group XXXII). The piston 17 of the dashpot is connected by a spring 18 with the base 5 of the scale. The spring 14 may be replaced by a horizontally mounted leaf spring, Fig. 2 (not shown), or by a spiral spring, Fig. 3 (not shown). Alternatively the piston may be rigid with the base 5 and the dashpot cylinder 15 may be spring-connected to the lever 7.
Patent GB-168536-A (GB)
Title: A new or improved device for emptying the contents of cans and other containers
IPC: B67B7/48
Filed: 1920-10-06
Abstract: 168,536. Durose, B. Oct. 6, 1920. Opening by cutting or tearing.-A device for piercing and emptying petrol tins &c., com prises a hollow chamber a, fitted with a spout k closed by a cap and having also a central sleeve c through which the spindle d of a piercing device e passes. The lower edge of the part a is formed to receive a washer p of soft, pliable material which may be cemented in position, and is to afford a liquid-tight joint with the outside of the tin. To use the device, an air hole is made in the tin and the piercer e, which may be of any section other than circular, is pressed into the tin by forcing down the handle f against the spring g until its upper edge e<1> has passed through the wall of the tin. A turn of the handle then locks the device in position, the wall of the tin being gripped between the part e' and the washer p.
Patent GB-1170018-A (GB)
Title: Improvements in or relating to Ink Retaining Materials
IPC: B29C48/09
Filed: 1968-06-14
Abstract: 1,170,018. Extruding synthetic resin tubes. TEIKOKU HAT MFG. CO. Ltd. 14 June, 1968 [2 Oct., 1967], No. 28374/68. Heading B5A. [Also in Division B6] A pen nib A<SP>1</SP>, Fig. 6, is manufactured by extruding a tube of synthetic resin, e.g. P.T.F.E. or polycarbonate, having a cross-section as defined by a ribbed mandrel 6 and a surrounding ribbed die ring 2, Figs. 1 and 2, stretching and cutting the extrudate into preforms (A), Fig. 4 (not shown), rolling each preform adjacent one end to provide spiral or otherwise transverse grooves 9, Fig. 6, and grinding the opposite end to form a conical tip. The extruder has an air or liquid passageway 7, Fig. 1, such fluid maintaining the internal shape of the extrudate during the stretching action. Heaters 3, 3<SP>1</SP> are provided together with a thermometer 12. The transverse grooves 9 are rolled to a depth sufficient to intersect the points 8<SP>1</SP> of starshaped axial passageway 7<SP>1</SP>.
Patent GB-973554-A (GB)
Title: Improvements in devices for applying wet films
IPC: G01N33/32
Filed: 1963-07-18
Abstract: 973,554. Coating-apparatus. BERGER, JENSON & NICHOLSON Ltd. July 18, 1963 [July 25, 1962], No. 28416/63. Heading B2B. A device for applying various thicknesses of a wet film of liquid comprises an elongated member having extremities 10, 11 of circular cross-section of the same diameter with a common central axis and an intermediate portion 13 of circular cross-section, the diameter of which is less than the diameter of the extremities and the central axis 14 of which is radially displaced from the common central axis 12 of the extremities by a distance not greater than the difference between the radii of the extremities and the intermediate portion. In use the member is rotated to provide a desired clearance between the intermediate portion and a plane surface to which a film is to be applied ; the clearance may be shown by indicia 15 on the member. Grooves 16, 17 confine the coating material to the central portion.
Patent GB-661947-A (GB)
Title: Improvements in or relating to stocking blanks
IPC: D04B9/46
Filed: 1946-06-24
Abstract: 661,947. Knitting. MILLER, I. L. June 24, 1946 [July 9, 1945], No. 28436/49. Divided out of 661,852. Class 74 (ii). A flat stocking blank, described in Specification 661,852, and adapted to be knitted on the machine illustrated in and in accordance with the method described in that Specification, comprises an ankle portion, heel areas and a foot portion all fully formed of integrallyconnected fabric, with no appreciable instep fabric between the starting and ending courses of the heel areas, the said heel areas being each formed of inwardly tapered gores (e.g. a, b, c), knitted while knitting of the instep is suspended, the apex of each succeeding gore, as knitting proceeds towards the sole, being outwardly positioned walewise with respect to the apex of the gore preceding it and the first and intermediate gores being subjected to widening operations at the selvedge edge, the final gore on each side, forming the lower ends of the heels, having a plain selvedge edge, so that the bottoms of the said heel areas are formed arcuately and with the heel and instep area presenting a continuous series of wale loops, extending across the fabric from selvedge to selvedge, from which the first course of foot fabric is knitted.
Patent GB-1376252-A (GB)
Title: Electronic flash devices with light-output control
IPC: H05B41/32
Filed: 1972-06-19
Abstract: 1376252 Control of electronic Hash devices BRAUN AG 19 June 1972 [23 June 1971] 28583/72 Heading G2A An electronic flash device comprises a flash tube 2 which can be ignited by a trigger contact 11, a capacitor 1 to supply the flash tube and a control circuit containing a photo-sensitive component for a main electronic switch 3 arranged in series with the flash tube, a first auxiliary electronic switch 7 being provided in shunt to the flash capacitor and connected to the trigger contact, it it being designed to place the main electronic switch in its conductive state, and a second auxiliary electronic switch 13 being controlled by the photo-sensitive component and which places the main electronic switch in its block condition in order to limit the burn time of the flash tube. Terminals 32,33 are connected to a voltage source to charge the flash capacitor 1 and the attainment of a set voltage causes glowdischarge tube 29 to ignite. Operation of trigger contact 28 supplies a discharge pulse from capacitor 31 to thyristor 7 which immediately is driven into its fully conductive state. A pulse is applied to the gate of thyristor 3 which becomes fully conductive and at the same time a voltage pulse is applied to ignition electrode 11 to ignite the flash tube. The switching of thyristor 3 charges a capacitor 15 via a diode 34, and the stored voltage energizes a photo-transistor 17. Flash-light reflected from the subject being photographed illuminates the photo-transistor, and a capacitor 20 integrates a voltage according to the amount of light received until thyristor 22 changes to its conductive state so that switching tube 13 strikes causing thyristor 3 to revert to the blocked condition. The circuit is designed so that the current through tube 13 is greater than that through the flash tube 2.
Patent GB-1291617-A (GB)
Title: A contactless electric motor current control device, more especially for use in an electric car
IPC: H02P7/29
Filed: 1970-06-12
Abstract: 1291617 Thyristor quenching circuits NIPPON YUSOKI CO Ltd 12 June 1970 [10 Dec 1969] 28600/70 Heading H3T [Also in Di-  vision H2] A chopper controlled D.C. motor with armature 49 has field windings 50, 51 either one of which is energized via thyristors 54, 55 respectively to give rotation in either direction. Thyristor 56 serves to quench either of 54 or 55 via transformer 59, diode 60 and capacitors 57 or 58 respectively. Diodes 52, 53 prevent discharge of capacitors 57 or 58 via the motor, and 61, 62 are freewheel diodes. Normally control pulse generator 45 provides pulses at controlled intervals in sequence c-a-c-a ... ,  or c-b-c-b . . ., dependent on rotation direction set by the direction switch 48. Should either 54 or 55 fail to switch off, resulting in continued low potential at either respective thyristor anode, detector 46 enables relaxation oscillator 47 sothat pulses in either sequence c-b-c-a-c-b ... , or c-a-c-b-a ... respectively, dependent. on the direction of rotation, provide the additional possiblity that thyristor 55 may quench 54, or vice-versa, as well as providing a motor torque in the reverse direction. The protection circuit automatically returns the motor control to normal operation when the potential at the inputs to detector 46 rise again, and is designed to protect the system against spurious firing pulses generated by noise. Fig. 6 (not shown) displays various abnormal pulse sequences that may occur, (D) representing a normal pulse sequence, (E) noise pulses, (F) the pulses provided by the relaxation oscillator (G), (H), the potential across either thyristor 54, 55 respectively, and (I) indicating the effective capacitor in the quenching circuit.