baber/WOPTO huggingface dataset:
Patent GB-746298-A (GB)
Title: A device for use in drawing figures, caricatures and a variety of other variable characters
IPC: B43L13/20
Filed: 1954-02-10
Abstract: 746,298. Stencils. HAYDOCK, R. R. April 7, 1954 [Feb. 10, 1954], No. 3971/54. Class 100 (2). [Also in Group XV] A drawing device or stencil comprises a disc of sheet material 1 having a plurality of apertures 3, 4 ... 7 outlining faces, and a plurality of apertures 8-19 outlining hair, eyebrows, eyes, nose, mouth, the apertures being so positioned that on rotation of the disc about a centre hole 2 the,apertures relating to the hair, eyes, &c., may be appropriately positioned relatively to the related face aperture. The device may be provided with holes 30 ... 36 by which the apertures relating to the hair, eyes, &c., may be correctly positioned relatively to the face apertures. Instead of holes 30 ... 36, peripheral notches may be formed on the disc.
Patent GB-823371-A (GB)
Title: Improvements in or relating to electrical capacitors for use with printed circuits
Inventor: ROBINSON FREDERICK CHETHAM
IPC: H01G2/06
Filed: 1955-02-10
Abstract: 823,371. Capacitors. HUNT (CAPACITORS) Ltd., A. H. Feb. 10, 1956 [Feb. 10, 1955], No. 3982/55. Class 37. A capacitor has a moulded tubular case with two terminals of opposite polarities extending from the same end thereof, the said end being so shaped as to provide a firm seating for the capacitor on a plane surface but having a portion thereof recessed so as to leave a gap between the end of the case and the surface, when the capacitor is mounted thereon, at a situation between or surrounding the terminals. Thus when the capacitor is mounted on a panel with its terminals projecting through apertures to make contact with a printed circuit on the side of the panel remote from the capacitor, the terminals being secured to the printed circuit by dip soldering, the gap prevents solder from creeping through the holes and between the upper surface of the panel and the end of the case by capillary attraction to short-circuit the capacitor. Figs. 2 and 4 show two alternative end views of the capacitor, which may be wound from metallized dielectric, the terminal wires 13, 14 being separated by recessed portion 16. The end face of the capacitor may alternatively be of concave form.
Patent GB-339194-A (GB)
Title: Improvements in or relating to cooling agents
IPC: C09K5/20
Filed: 1930-02-06
Abstract: 339,194. Caro, N., and Frank, A. R. Feb. 8, 1929, [Convention date]. Liquefying and solidifying.-In processes for absorbing at low temperatures, liquefying, or freezing out nitrogen oxides, nitric acid, and mixtures of the same, an aqueous solution of ammonia is employed as the cold conveying medium. Substances such as ammonium nitrate, or metallic nitrates or thiocyanates may be added to the solution.
Patent GB-579320-A (GB)
Title: Improvements in or relating to electron discharge devices employing hollow resonators
IPC: H01J25/24
Filed: 1942-03-26
Abstract: 579,320. Discharge apparatus. HILL, J. W. March 26, 1942, No. 4040. [Class 39 (i)] In a discharge apparatus employing hollow resonators such as a velocity modulated electron discharge tube of the reflex type the electron gun 7 and the reflecting electrode 8 are accurately located with respect to the resonator 3 by mica strips 10 fastened to the gun or electrode and engaging-after the resonator has been mounted in the envelope-either rings 14, 17, Fig. 1, or the curved edge 20, Fig. 2. The mica strips are held by clamp 11 and they may carry an additional electrode 18. The beam may be of ribbon form as described in Specification 574,512.
Patent GB-1370099-A (GB)
Title: Mechanical brake actuating apparatus for vehicles
IPC: F16D65/28
Filed: 1972-02-03
Abstract: 1370099 Brakes NEATE BRAKE CONTROLS Ltd 3 Feb 1972 [5 Feb 1971] 4071/71 Heading F2E A mechanical brake actuating apparatus for a vehicle comprises a base 1, a toggle mechanism constituted by two pivotally interconnected levers 10, 11 adapted to be moved to the region of their dead-centre position by a brake operating member 5 to apply the brake, the first 10 of said levers being pivotally secured to the base at its end remote from the lever 11 and the end of the lever 11 remote from the lever 10 being constrained to move along a predetermined path defined by the base and being operatively connectible to a brake, and further including means for automatically and releasably holding the toggle mechanism against return movement from any selected one of a plurality of positions through which it passes as it approaches its dead-centre position during brake applying operation. As shown, the lever 5 carries the pawl 8 which is biased by a spring to its ratchetengaging position and is moved to releasing position by a lever 9; the ratchet 3 is secured to the mounting plate 1 to which the lever 5 is also pivoted. The lever 10 is rigidly connected to the lever 5 and the other lever 11 is pivoted to the link 10 and to a bracket 16, the bolt 13 mounting a roller disposed in a slot 2 of the bracket; a second bolt 15 carried by the bracket mounts a roller which also moves in the slot. The bracket is connected to a brake operating rod 17 and the ratchet has five teeth 4 to provide five holding positions for the toggle mechanism as it approaches dead-centre position and pivotal movement of the lever 5 past the last ratchet tooth causes the levers 10 and 11 to move through the dead-centre position in which, when the apparatus is properly adjusted, the brake is fully applied. Engagement of the roller on the bolt 15 with the end of the slot 2 limits the extent to which the toggle mechanism can move past dead-centre. In a modification, Fig. 3, a lever 5 and ratchet and pawl mechanism as previously described are provided but the lever carries a member 23 which engages the lever 10 adjacent the position where it is connected to the lever 11 and the lever 10 is pivoted to a mounting plate 21 which also carries the ratchet 3 and the lever 5 and which has a slot 2 in which a roller 24 connected to the toggle lever 11 can move; the roller 11 is also connected to a brake operating rod 17. In this construction, the toggle levers do not go past the dead-centre position since abutment of the roller with the end of the slot 2 prevents this.
Patent GB-1338092-A (GB)
Title: Transducers
IPC: H04R11/00
Filed: 1970-01-28
Abstract: 1338092 Audio transducers COSMOCORD Ltd 19 April 1971 [28 Jan 1970] 4084/70 Heading H4J A magnetic transducer comprises a closed magnetic circuit including two pairs of permanent magnets having unlike poles adjacent to form magnetic gaps and a vibratable armature extends through both gaps and through a coil. The Figure shows an exploded view of one form of microphone in which the magnetic circuit is formed by magnet pairs 10, 11 and 12, 13 and magnetic members 15 and 16. The magnets 10 and 11 clamp an end 14a of the armature 11 thickened by the addition of coatings or layers of plastics or metal, while spacers 17 and 18 similarly space the magnets 12 and 13 to allow the end 14b of the armature to vibrate. Apertures such as 15g in the magnetic members allow for the insertion of two coils which surround the armature. The assembly is mounted in a casing not shown which transmits vibrations from one face of the casing which acts as a diaphragm to the armature via a driving pin shown connected to the armature. Vibration of the armature 14 displaces the end 14b within the gap between magnets 12 and 13 causing magnetic flux to flow backwards and forwards through the armature. The resultant flux flow induces currents in the coils. Various magnetic shunts Figs. 1, 6 and 8 using a displaceable auxiliary magnet or deflectable magnetic coupling extensions in each case controlled by an adjustment screw are treated adjacent the end 14a of the armature to render the effective position of the armature adjustable to allow the initial flux to be set to zero.
Patent GB-479241-A (GB)
Title: Improvements in or relating to valves
IPC: F16K31/26
Filed: 1937-02-12
Abstract: 479,241. Float - operated valves. GOSLETT, M. G., and GOSLETT, W. M. Feb. 12, 1937, No. 4288. [Class 135] A float-operated cistern supply has a balancing piston 11 which operates in a bore in a separate part or plug 6 or 20 detachably secured to one end of the valve casing 1, the valve casing as far as the inlet orifice 2 being of such diameter that on removal of the part or plug the valve member 8, a body part 7 which carries it, and the balancing piston may be removed as a unit. The valve shown in Fig. 1 comprises a casing 1 with a lateral outlet 4 and a threaded end cap 6 containing a cup leather piston 11 secured to the body part or member 7 by a ported screw 12 and communicating with the inlet by a passage 13. The valve member 8 seats on the rim 3 of the inlet and is secured to the opposite end of the member 7 by a ported screw 14 and a flanged sleeve 9. As shown the member 7 has a central slot 15 for a single finger 16 on the float arm 17, the mid-portion of the passages 13 being diverted laterally round the slot. The passage may however be centrally located throughout and the member 7 provided with flats to receive a fork on the float arm. Fig. 4 shows a modification in which the piston 11 slides in a removable threaded sleeve 20 of which the end is closed by a cap 21 having a sealing washer 22.
Patent GB-900539-A (GB)
Title: Improvements in and relating to laminated magnetic core structures
IPC: H01F27/245
Filed: 1959-02-06
Abstract: 900,539. Transformers and inductances. SMIT & CO.'S TRANSFORMATORENFABRIEK N.V., WILLEM. Feb. 6, 1959 [Feb. 7, 1958], No. 4308/59. Class 38 (2). A magnetic core is formed of layers of laminations each made up of leg pieces 1 and yoke pieces 7, 8 having corner pieces 2, 5, 9 and 10 welded to them at 11, 12 and forming butt joints at 13, 14, 15 and 16, as shown in Figs. 1 and 3. The yoke, leg and corner pieces are made from rolled grain orientated material, the directions of greatest permeability being along the length of the yoke and leg pieces and at rightangles to the long sides of the corner pieces. The butt joints of each lamination layer are overlapped by the corner pieces of the adjacent layers. Alternative ways of arranging the joints between the middle leg and the yokes are described (Figs. 2, 4 and 5, not shown). Specification 715,260 is referred to.
Patent GB-607810-A (GB)
Title: Improvements in ice-cream mix and the production thereof
IPC: A23G9/32
Filed: 1946-02-12
Abstract: To a mix to make ice cream, frozen custard, sherbert (water ice), &c., is added a small amount of one or more of the high melting saturated fatty acid esters of an inner ether of a hexahydric sugar alcohol to facilitate the production of overrun, and if desired to act as a substitute for egg yolk powder in a standard mix as described.  The esters may be the mono-acid esters and may be the stearate or palmitate of sorbitan or mannitan.  The addition comprises not less than .01 per cent and not more than about 5 per cent of the ester product, a major part of which consists of a mono-acid ester of a 1, 4 inner ether of a hexahydric sugar alcohol and a saturated higher fatty acid.  The range of proportional addition of the ester may be restricted to from .10 per cent to .35 per cent.  The major part of the ester product consists of one or a mixture of esters chosen from the group sorbitan or mannitan monostearate or monopalmitate which may be the commercially available products containing also esters of the di-ethers sorbide and mannide. The addition is in powder form.  U.S.A. Specification 2,065,398 is referred to.
Patent GB-883855-A (GB)
Title: Electrical inductive apparatus
IPC: H01F27/32
Filed: 1960-02-08
Abstract: 883,855. Electric transformers. WESTING- HOUSE ELECTRIC CORPORATION. Feb. 8, 1960 [Feb. 16, 1959], No. 4320/60. Class 38 (2). In a transformer having its primary and secondary windings formed of conducting sheet material and with the secondary turns interleaved with some of the primary turns as described in Specification 872,073, a device such as a current transformer, a reactor, a saturable reactor or other non-linear impedance is arranged to vary the potential between the interleaved primary and secondary windings with variation of load current. Fig. 2 shows a current transformer 80 connected to increase the potential across the dielectric insulation between primary turns 30B and secondary turns 60 as the load current increases so that the leading current taken by the inherent interwinding capacity 72 is increased. The primary winding of transformer 80 may be connected to the mid-point of 60 instead of to terminal 86. The interwound part of the primary winding may begin with the first inner turn. Instead of a current transformer a reactor 88 (Fig. 4) connected in the primary lead to terminal 102 may be provided. Alternatively a saturable reactor 94 (Fig. 3) may be used, the saturation of the core, like the saturation of the current transformer core referred to above, limiting the effect of overload in the main circuits. In another embodiment the variation of potential with load current is obtained by connecting a thermistor between the terminals 86 and 116 the impedance of the thermistor varying with the temperature of e.g. the insulating oil which in turn varies with the load current.
Patent GB-754732-A (GB)
Title: Improvements in elastomeric polymeric polyurethane compositions
IPC: C08L75/04
Filed: 1954-02-16
Abstract: An elastomeric polymer obtained by reacting a di-isocyanate-modified polyester or polyesteramide with a cross-linking agent, e.g. water capable of introducing urea bridging groups into the structure is filled with a fibrous material in the form of flock.  It is stated that the flock may react with the polymer.  Preferred proportions are from 2-40 parts of flock per 100 parts by weight of polymer.  The flock may be rayon, cotton, nylon, glass or wool flock or flock from purified wood cellulose.  The flock considerably increases the tear resistance of the rubber particularly in proportions of 10-30 per cent.  The flock may be incorporated by milling with the uncured gum or by mixing with the liquid modified polymer before the reaction with water or other compound to introduce urea groups.  In examples the tensile and tear strengths and elongations of compositions based on a glycoladipic acid polyester modified with p,p1-diphenylmethane di-isocyanate and cross-linked with water and containing from 0 to 50 per cent of cotton, rayon and nylon flocks are compared with those of natural rubber similarly filled.  A further example is given using glass flock.  Graphs are also given showing the relationship between physical properties and flock content for the polyurethane rubber and natural rubber.  The products are particularly useful for applications such as sheeting, unsupported or on fabric backings, which is to be stitched.ALSO:The Specification discloses a rubber composition consisting of natural rubber 100 parts, stearic acid 1 part, zinc oxide 5 parts, mercaptobenzothiazole 1 part, sulphur 3 parts, and from 0 to 50 parts of cotton, rayon or nylon flock, all parts by weight.  The tensile strength, tear strength and elongation of the cured products are compared with those for polyurethane rubbers filled with flock.  Other flocks referred to are glass, wool and alpha cellulose flock from purified wood cellulose.
Patent GB-625667-A (GB)
Title: Improvements in and relating to controlling the flow of fluids
IPC: F16K31/08
Filed: 1946-02-13
Abstract: 625,667. Electrically and magneticallyoperated valves. DIXON, O. G., RONNEBECK, H. R., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 13, 1946, No. 4491. [Class 135] A magnetically-actuated rotary disc valve for controlling the flow of fluids in, e.g. a distilling plant, as described in Specification 578,309, [Group XII], comprises a glass tube 13, Fig. 6, of the drawings accompanying the Provisional Specification, housing a fixed valve member 4 provided with a ported disc 1, Fig. 2, which coacts with a rotatable ported disc 5, Fig. 4, formed on a valve member 7. The valve member 7 has secured thereto a bar magnet 8 which co-operates with a ring magnet 16, housed in a non-magnetic case 14 encircling the tube, and is arranged to be rotated by a rack 15 secured to the ring magnet and a pinion 19 secured to an operating spindle 18 to rotate the disc 5 relatively to the disc 1 to open or close the ports therethrough. In alternative constructions, the bar magnet 8 may be replaced by a soft iron armature or the movable valve member made of magnetic material. The ring magnet may be a permanent magnet or an electromagnet. Specification 564,771 is referred to in the Provisional Specification.
Patent GB-861406-A (GB)
Title: Method for the manufacture of o-aryl o,o-di-(lower-alkyl) phosphorothioates
Inventor: BLAIR ETCYL HOWELL
IPC: C07F9/18
Filed: 1959-02-10
Abstract: O-Aryl O,O-di-(lower alkyl) phosphorothioates of the formula R.O.P(S)(OX)2, in which X is C1-C3 alkyl and R is an aryl radical which may be substituted by one or more substituents including Cl, Br, alkyl, alkoxy, nitro, cyclohexyl, benzyl and phenyl are obtained by reacting a lower alkanol (XOH) with an O-arylphosphorodichloridothioate or an O-aryl O-lower (C1-C3) alkyl phosphorochloridothioate at a temperature at which hydrogen chloride is formed and until the formation of hydrogen chloride is substantially complete, said temperature not exceeding 65 DEG  C., the alkanol being reacted with the phosphorochloridothioate reagent in the proportion of four gram mols. of the alkanol with an amount of the phosphorochloridothioate reagent containing not more than one gram atom of phosphorus bound chlorine, any amount of the phosphorochloridothioate reagent containing 0.8 gram atom or more of phosphorus-bound chlorine being reacted gradually portionwise with the lower alkanol while continuously withdrawing hydrogen chloride in the gaseous state from the reaction mixture as formed. The portionwise reaction is suitably effected by adding the phosphorochloridothioate to the alkanol under reduced pressure or while passing an inert gaseous entraining agent, e.g. nitrogen, methyl chloride, carbon dioxide or air through the reaction mixture. Preferred reaction temperatures are from 15 DEG  to 45 DEG  C. and the reaction may be conducted in the presence of an inert solvent, e.g. methylene chloride, ethylene-dichloride or dibromide, carbon tetrachloride, chloroform, benzene or toluene. Examples are given for the production of O-(2,4,5-trichlorophenyl)-O,O-dimethyl phosphorothioate; O-(4 - methylphenyl)-, O - (2 - bromo - 4 - biphenylyl)- and O-(3-chloro-4-nitrophenyl)-O,O-dimethyl phosphorothioate; O-(2,4-dichlorophenyl) - O,O - diethyl phosphorothioate and O - (2,4,5 - trichlorophenyl) O - methyl O - n - propyl phosphorothioate.  Several other products obtainable by the process are also mentioned.  O-Aryl phosphorodichloridothioates may be prepared by reacting an excess of thiophosphoryl chloride with an alkali metal salt of phenol or suitably substituted phenol.  O-aryl O-alkyl phosphorochloridothisates may be obtained by reacting, e.g. at 40-50 DEG  C., from 2 to 3 molecular proportions of a lower alkanol with one molecular proportion of an O-aryl phosphorodichloridothioate at a temperature at which hydrogen chloride is formed while continuously withdrawing hydrogen chloride in the gaseous state as formed, the said temperature being at least 15 DEG  C. below the boiling-point at 760 mm. pressure of the alkanol used.  Reference has been directed by the Comptroller to Specification 699,064.
Patent GB-1467024-A (GB)
Title: Method of continuously casting silicon-and/or aluminium-killed steels
IPC: B22D41/00
Filed: 1974-02-01
Abstract: 1467024 Continuous casting KLOCKNERWERKE AG 1 Feb 1974 [12 March 1973] 04680/74 Heading B3F [Also in Divisions C7 and F4] Silicon- and/or aluminium-killed steel is teemed from a ladle 1 into a tundish 2 through a tube 6 and a bowl 4 so that the steel flows up around the tube mouth into a layer of slag which absorbs silicates or alumina, and into which the upper edge of the bowl 4 extends. The gap between tube exterior and bowl interior is smaller in cross-section than that of the tube interior. The outlet nozzles 8 of the tundish 3 are immersed in moulds of a casting machine.
Patent GB-215472-A (GB)
Title: Improved construction of knife cleaner
IPC: A47L21/02
Filed: 1923-02-17
Abstract: 215,472. Spong, J. W. Feb. 17, 1923. Knives. cleaning and polishing. - In machines of the type having rotating discs faced with felt, between which the knives are held. the feltcarrying discs 4, 12 are provided with radial recesses 22 so that the cutting edge portions of the knives are cleaned. One side 1<b> of the cylindrical casing 1 is formed as a door by having a loose hinge 18 at its base, this side is fixed in position by nuts 21 and has a bearing 11 for a shaft 15 carrying the disc 12 and a handle 17 so that when the side is removed polishing powder can be applied to the discs. The fixed side 1<a> of the casing has a bearing 3 for the shaft 7 of the disc 4 and the discs are pressed together by springs 9, 16 on the shafts. Some of the recesses extend wholly between the circumference to the centre of the discs, others extend only partially.
Patent GB-1090863-A (GB)
Title: Process for the production of poly-1,3-dioxolanes
IPC: C08F8/28
Filed: 1966-02-02
Abstract: A poly-1,3-dioxolane having a molecular structure comprising recurring units of the general formula <FORM:1090863/C3/1> wherein R is an aliphatic, cycloaliphatic, olefinic, araliphatic or aromatic radical and n is not less than 1000 is obtained by reacting a polyhydroxymethylene macromolecular compound having a molecular structure comprising recurring units of the general formula <FORM:1090863/C3/2> wherein n is not less than 1000, with an aldehyde in the presence of an acidic catalyst and an inert solvent. Preferably the polyhydroxy methylene macromolecular compound is obtained by the saponification of a vinylene carbonate homo- or copolymer.
Patent GB-270828-A (GB)
Title: Improvements in, or relating to taps, or cocks
IPC: F16K27/12
Filed: 1926-02-18
Abstract: 270,828. Gummers, Ltd., and Empson, E. J. Feb. 18,1926. Lift valves; casings. - A screwdown tap of the bib type comprises the combination and arrangement of the following parts, viz:- A spout b, a hoodshaped cover f having a smooth surface continuous with the upstanding neck a<1> of the casing, with "flats" f<1> by which it can be screwed and unscrewed to and from the neck a<1>, a stuffing - box m, a gland n also with "flats," a screw-threaded inlet connections d with squared portion d' and flange d<2>, a screwed spindle h engaging a thread in the cover f. and a loose-jumper valve member j, all substantially as shown.
Patent GB-1065598-A (GB)
Title: Improvements in and relating to master cylinders for fluid pressure systems
Inventor: SMITH RAMSAY HOWARD
IPC: B60T11/20
Filed: 1965-02-03
Abstract: 1,065,598. Master cylinders. AUTOMOTIVE PRODUCTS CO. Ltd. Feb. 1, 1966 [Feb. 3, 1965], No. 4718/65. Heading F2F. A master cylinder is formed as a one-piece moulding in plastics material providing both the cylinder body and the reservoir. In the tandem cylinder shown a plastics secondary piston 6 and a steel primary piston 5 are arranged in a steel liner disposed in the moulding. Passages 14, 18 connect reservoir 9 to the spaces before and behind the piston 5 while the reservoir 10 is connected to the space 17 through a passage 15, a hollow split stop pin 36 extending through a slot 37 in the piston 6, and a valve 42 urged into sealing contact with a lip of the seal 45 but held open, when the secondary piston is in its withdrawn position, by the abutment of the valve extension 43 with the stop pin 36. A spigot 50 on the piston 5 has a head 51 which engages behind an abutment 52 at the outer end of a slot 53 extending lengthwise in an extension 48 of the piston 6, the pistons being held apart by a spring 47. Recuperation passages 32, 46 are provided in the pistons 5 and 6 respectively.