baber/WOPTO huggingface dataset:
Patent GB-1508865-A (GB)
Title: Mixing liquid compositions
IPC: B01F23/47
Filed: 1975-06-30
Abstract: 1508865 Mixing apparatus BRITISH UNITED SHOE MACHINERY CO Ltd 30 June 1975 [1 July 1974] 27504/75 Heading B1C [Also in Divisions B5 and F2] An apparatus for mixing liquids (e.g. polyurethane constituents) comprises a pre-mix chamber 39 into which the constituents are injected in impinging streams, the pre-mix passing through the inlet 33 into a mixing chamber 18 having a multi-bladed impeller 24 rotated by a hydraulic motor (27), the volume of the chamber 18 being variable by means of a piston 19 having a hydraulic actuator 22. An outlet 34 in the base of the mixing chamber leads to a spruce passage (36, Fig. 3 not shown) in which a reciprocable rod acts as valve and clearing device, and thence to a mould. The inlet valves 16, 17 open against springs 48 but may be locked closed by fluid pressure applied through line 53. In operation the liquids are metered by cylinders (70, 72) at a pressure of 3,000 p.s.i. and the valves open at 500 p.s.i. when the hydraulic pressure is released; the opening of the valves is limited by an adjustable stop 49. The streams of liquid impinge on the axis of the premix chamber at an angle of 150 in elevation and 130 in plan, and the impeller is rotated at 3,000-11,000 rev/min. Operation is controlled by a programming device (60), which starts the impeller and causes one constituent to be injected until it forms with the residuum in the mixing chamber a mixture of pre-determined ratio; the piston 19 is then raised, the other constituent injected, and the spruce valve 37 opened. When monitoring devices (e.g. cams 23, 77, 78 and their followers) indicate that the volume required is nearing completion, the piston 19 descends, the spruce valve 37 is closed and an excess of polyol is supplied to render the residuum in the chamber non-reactive.
Patent GB-1432484-A (GB)
Title: Method and apparatus forsoldering small components
IPC: H05K3/34
Filed: 1973-06-08
Abstract: 1432484 Soldering KOKUSAI DENSHIN DENWA KK and MISHIMA KOSAN CO Ltd 8 June 1973 [10 June 1972] 27533/73 Heading B3R In a method of and apparatus for soldering a succession of small components arranged generally in a line a source of concentrated radiant energy is moved intermittently along the line and radiant energy from said source is passed to said components intermittently, i.e. either only when the source is moving or only when it is stationary. The source of radiant energy may be an infra-red lamp or laser device and the components may be parts of a printed circuit board or terminal connections to a printed wiring board. In an apparatus, as shown, a lamp 10 is carried by a slide 6 mounted on slide bars 3, 4 and adapted to be driven intermittently by a motor 25 under the control of timing and voltage control means 32, 34. The lamp is energized intermittently under the control of a timer 33 and current regulator 35. Provision is made for manually adjusting the slide 6 to a start position and the apparatus shown is mounted on a carriage for translatory movement to the left and right.
Patent GB-358688-A (GB)
Title: Improvements in the manufacture of hollow balls made of celluloid or like material
IPC: A63B39/00
Filed: 1930-09-16
Abstract: 358,688. Balls for games. BRITISH XYLONITE CO., Ltd. and SNELL, S. W., Hale End, London. Sept. 16, 1930, No. 27659. [Class 132 (ii).] A hollow ball a is built up without inflation of three seamless parts of celluloid or other suitable material, e.g. two caps b. d and a middle ring c of depth about three-quarters of the diameter of the ball and having its edges slightly recessed at e to allow the pieces b, d to be attached without any ridge being left on the outside of the ball. In a modified construction the edges of the ring c may be simply chamfered.
Patent GB-770686-A (GB)
Title: Improvements in or relating to braking apparatus for use with colliery and other like winding engine control gear
IPC: B66B15/00
Filed: 1954-09-24
Abstract: 770,686. Hydraulic brakes. BLACK, G. A. Sept. 13, 1955 [Sept. 24, 1954], No. 27713/54. Class 103 (1). In hydraulic braking apparatus for colliery engines and like winding equipment, the brake is applied normally by supply of pressure to operate piston 5 to cause the shoe 2 to engage the drum 1, the brake engaging effect of spring nest 16 being held off by pressure acting oppositely on a piston 13. When, in an emergency, the overwind or overspeed device trips, an operating lever 20 on the by-pass valve 18 causes port openings to be changed in such a way as to close port a and connect port b with port c. Thus pressure oil under action of the spring nest 16 is communicated directly against the face of piston 5, this hydraulic emergency operation providing a smoother action than by direct mechanical means, which may however be used, in the event of fluid failure, through an extension piece 14 on the piston 13. The hydraulic system includes a minor supply line from pumps 8 and 81 to operate auxiliary cylinders 23, 24 and 25 at a constant fixed pressure. Specification 755,878 is referred to.
Patent GB-511726-A (GB)
Title: Improved methods of making bearings
IPC: B22F7/04
Filed: 1938-09-23
Abstract: 511,726. Coating with metals. GENERAL MOTORS CORPORATION. Sept. 23, 1938, No. 27771. Convention date, Oct. 13, 1937. [Class 82 (ii)] [Also in Groups XXXIV and V] A bearing comprises a sintered porous metal sponge forming a strong load supporting framework impregnated with a corrosion-resistant lead base alloy containing from 2-15 per cent. antimony and 2-15 per cent. tin. A mixture of powdered metals 3, e.g. of copper and nickel, is spread uniformly on a steel plate 1 having a thin copper coating 2. Pore-forming material such as salicylic acid may be added to the mixture. The latter is then sintered. The leadtin-antimony alloy 4 is then applied, in molten form, to the surface of the porous metal 3, preferably by immersion under vacuum, so that it fills the pores thereof. Thereafter the strip is subjected to air pressure and is rapidly cooled from the back. The surface of the bearing metal 4 is then machined ready for use. The amount of metal 4 removed during the machining process can be varied so that more or less of the harder porous metal 3 is exposed at the bearing surface. The steel strip 1 may be replaced by a strip of nickel or nickel alloy. Specification 496,763 is referred to.
Patent GB-953735-A (GB)
Title: Apparatus for measuring pressure maxima of liquid or gaseous media
Inventor: KISTLER WALTER PAUL
IPC: G01L19/08
Filed: 1960-08-11
Abstract: 953,735. Piston-and-spring pressure gauges. KISTLER INSTRUMENTS A. G. Aug. 11, 1960, No. 27814/60. Heading G1L. Apparatus for measuring pressure maxima of liquid or gaseous media occurring periodically or in a sequence varying in time comprises a body member 2 and on adapter 1 which latter is screwed first into the wall of the chamber whose maximum pressure is to be determined, a valve 3 in the adapter being spring-urged upwards to seal the chamber. The body 2 of the apparatus is then screwed into the upper end of the adapter 1 and this forces the valve 3 downwards off its seat as shown so that the gas (or liquid) being measured then acts against the head 7 of a piston 6 which is in fluid-tight sealing relationship with a seating 8. If the pressure is sufficient to force it off the seating 8 against the action of a spring 11 the pressure then acts on a piston 6 as well as the head 7. The piston 6 is then urged against a stop 20 carrying with it a feeler needle 18. The compression of the spring can be controlled by a micrometer screw 12 and is indicated by the position of a sleeve 13. In use the screw 12 is adjusted until a position is found in which the needle 18 when felt by a finger is almost stationary. This is stated to be related to the maximum pressure required if the pressure is fluctuating rapidly. The screw 12 is locked in its adjusted position by a collet 16 drawn upwards by a nut 15. In a modification for low pressures and slight variations thereof, a piston separate from the head 7 is provided which moves against a separate light spring to actuate the feeler member. Instead of the feeler member, the movement of the piston could be used to induce a voltage in a stationary induction coil to be indicated on an electric indicating instrument. Alternatively, a pneumatic resisting force could be used instead of the spring means with provision for varying the pressure which could be indicated on a suitable gauge as the measured value.
Patent GB-248040-A (GB)
Title: Improvements in or relating to pumps
IPC: F04B3/00
Filed: 1924-11-20
Abstract: 248,040. Lunge, E., and Courtaulds, Ltd. Nov. 20, 1924. Double-acting bucket pumps; buckets; pumps for viscous liquids; mountings.-In a pump for delivering fluid at a constant rate, of the kind comprising two reciprocating pumps in series, each piston having a period of delivery at a uniform rate and the uniform delivery periods successively overlapping, two hollow pistons 24, 25 with valves 26, 27 reciprocate side by side in pump cylinders 28, 29 and in cylindrical bores in a body 19, the pistons being guided solely by the body 19 and the cylinders taking their alignment solely from the pistons. The cylinders 28, 29 have respectively an inlet 30 and outlet 31 and the pistons 24, 25 are each reciprocated by means such as a feed screw or cam giving a delivery stroke having a period of uniform movement, during which the valve 26 or 27 is closed. The valves are actuated by means of arms on the valves engaging stops disposed in their path of travel. The device may be supported by pegs 32 on the body and on each of the cylinders and by brackets 33 - - 36 which permit self-alignment of the parts. Specification 248,039 is referred to in the Provisional Specification.
Patent GB-714247-A (GB)
Title: Improvements in or relating to metal containers
IPC: B65D21/02
Filed: 1950-11-14
Abstract: 714,247. Boxes; hollow-ware. PRESSOTURN, Ltd., and COOKE. A. H. Feb. 14, 1952 [Nov. 14, 1950], No. 27856/50. Classes 18 and 66 A fish box has upwardly converging sides so that the upper rim 4 may seat in a groove 9 in the base of a similar box, drainage holes 8 being provided in the box outside the groove so that water draining from an upper box falls outside that below. Handholes may be provided by cut-outs 12 or by bars 17 fitting in the hollow rim 4 on either side of gaps in the walls. The base is reinforced by embossing 10. The box may be cast with integral base and sides.
Patent GB-299363-A (GB)
Title: Improvements in fluid pressure engines for operating and controlling doors
IPC: E05F15/02
Filed: 1928-09-28
Abstract: 299,363. National Pneumatic Co., (Assignees of Rowntree, H.). Oct. 24, 1927, [Convention date]. Operating and controlling doors hydraulically and pneumatically. - A fluid pressure engine having double-acting pistons for actuating doors is provided with a valve for controlling the admission and exhaust of fluid to and from the ends of the cylinder including a valve chamber connected by passages and by means of said valve to the pressure and exhaust ends of the cylinder, the said chamber having an exhaust port and a second valve actuated by said fluid pressures and adapted to open the exhaust port when the ratio of said fluid pressures reaches a pre-determined amount. In the arrangement shown, the supply of pressure fluid to an exhaust from the doublepistons 4, 5 connected to the door is controlled by a rotary valve 15. This valve is rotatable by means of a lever 35 and is provided with throughports 18, 19 communicating with a chamber 22 that is supplied with operating pressure fluid through an inlet 24. The valve 15 is also provided with surface ports 16, 17 interconnected by a channel 21. With the valve 15 positioned as shown, operating pressure fluid passes through the port 19 and passages 33, 11 to the righthand side of the piston 5 to cause the pistons to move to the left-hand end of the cylinder 1. At the same time pressure fluid on the other side of the piston 4 is forced through the channels 12 and 34, ports 17, 16 and pipe 25 into the chamber 23, to cause the piston 28 to move to the right and open the exhaust valve 30. Should the door meet with an obstruction so as to stop the movement of the pistons 4, 5, pressure fluid will exhaust from the chamber 23 until the pressure in the chamber 22, acting on the piston 27, is able to move the differential pistons 27, 28 to the left and close the exhaust valve 30. When the obstruction is removed and the pistons 4, 5 resume the movement to the left the pressure in the chamber 23 is increased until the exhaust valve 30 is again opened.
Patent GB-1142662-A (GB)
Title: Broadband receiving antenna
Inventor: STROMSWOLD CHESTER
IPC: G01S3/06
Filed: 1966-06-22
Abstract: 1,142,662. Aerials; radio direction-finders. SANDERS ASSOCIATES Inc. 22 June, 1966, No. 27946/66. Headings H4A and H4D. An aerial, which is associated with a receiving means operable over a frequency range f 1  to f 2  (f 2  being greater than f 1 ), has electrically dissipative material disposed in series therein, is a quarter-wavelength long at a frequency f 3  intermediate the frequencies f 1  and f 2 , is less than an eighth-wavelength long at the frequeney f 1 , and has a resistance the magnitude of which is less than the impedance of said aerial at the frequency f 1  but is greater than the impedance of said aerial at the frequency f 3 . As described, a radio direction-finder has a rotating loop aerial 10 contained within a screening cage 24 mounted on a base-plate 28. An omni-directional sense aerial is provided by an array of twelve monopoles 22 which are carried on the base-plate 28 by insulators 23 disposed in a circle centered on the axis of rotation of the loop 10. The monopoles may be 10 inches long where operation is over a range of 30-500 Mc/s., and they are constructed with segments 32 of highly-conductive material, such as copper, alternated with segments 30 of a resistive material such as carbon, or a ferrite. They are connected together in groups of three by means of resistive jumpers 34, and four leads 35a, 35b, 35c, 35d are taken to a receiving and indicating unit 18. The damping introduced by the resistive segments reduces errors in the direction finder caused by standing waves in the monopoles under resonant conditions at the higher frequencies of operation. The screening cage 24 is made up of bands 26 of conductive material lying in planes containing the axis of rotation of the loop aerial 10. They may also be provided with distributed series resistance, to reduce errors at higher frequencies. For example, the bands 26 may be made of resistance strands so that each band has a resistance of 1500 ohms, for a directionfinder operating over the range 30-500 Mc/s.
Patent GB-659482-A (GB)
Title: Asymmetrically conductive elements
IPC: H03D9/06
Filed: 1949-11-01
Abstract: 659,482. Crystal detectors. COMPAGNIE DES FREINS & SIGNAUX WESTING- HOUSE. Nov. 1, 1949, No. 27947. Convention date, Nov. 5, 1948. [Class 40 (v)] An asymmetrically conductive element comprises a first conductive support carrying a semiconductor and provided with a male or female connecting member, and a second conductive support carrying the wire in point contact with the semi-conductor and provided with a female or male connecting member, the two conductive supports being mounted on a high-frequency insulator which completely surrounds the semiconductor and point contact assembly. As showri, a conductive support 1 which carries a crystal 2 and terminates in a screw-threaded stud 3, and a conductive support 4 having a screw-threaded hole 5, which supports an adjustable screw 6 carrying the contact-wire 7, are mounted in a sleeve 9 of insulating material which surrounds the crystal assembly. The inner surface and end faces of the sleeve 9 may be metallized to permit soldering or welding to the members 1 and 4. The member 4 may be split to assure tightening of the screw 6 which is also held in position by a stopper 8 of cement. The element may be fitted with another threaded stud in the hole 5 and used alone, two elements may be connected in series by screwing stud 3 of one element into tapping 5 of the other, or two elements may be mounted side-by-side, the threaded studs 3 being screwed into a conductive plate and at the other end the elements being joined by another plate, insulating or conductive as required. Other combinations are suggested.
Patent GB-1425168-A (GB)
Title: Brake drums
IPC: F16D65/827
Filed: 1972-06-16
Abstract: 1425168 Brake drums BRITISH LEYLAND TRUCK & BUS DIVISION Ltd 14 Sept 1973 [16 June 1972] 28217/72 Heading F2E A brake drum has a cooling fin clamped around the outer periphery of the drum. The fin may be formed in one piece or comprise a plurality of discrete segments. Each segment has a flange 11, fitting around the drum, and annular fins 12 projecting from an arcuate fin 13, six segments may be provided, damped around the drum by a steel band or strap to form a continuous fin. The fin may be of aluminium alloy.
Patent GB-1175505-A (GB)
Title: Improvements in or relating to Chain Drive Systems
Inventor: PUTZ WALTER
IPC: B65G23/00
Filed: 1968-06-14
Abstract: 1,175,505. Chain gearing. SEMPERIT ÍSTERREICHISCH - AMERIKANISCHE GUMMIWERKE A.G. 14 June, 1968, No. 28301/68. Heading F2Q. In a stepping chain drive arrangement, a chain 8 passes over at least two sprockets each having fewer than six teeth and one of the sprockets 1 is spring-mounted in order to tension the chain. The sprocket 1 comprises a disc having four peripheral slots to accommodate the transverse members of the chain, the disc being fixed to a shaft 2 running in a bearing 3 which is movable along a link 4 under the influence of a spring 6.
Patent GB-822421-A (GB)
Title: Heat exchanger
Inventor: MULFORD GEORGE VALENTINE
IPC: F28D9/00
Filed: 1957-09-07
Abstract: 822,421. Making heat-exchangers. FRASER & CO. Ltd., W. J. Sept. 7, 1957, No. 28305/57. Class 83 (2). [Also in Group XIII] In a heat-exchanger in which flat quadrilateral metal plates 1, 2 are joined together in pairs along the whole lengths of two opposite sides 3, 4 by cranking the plate edges towards one another and thereafter welding the plates together along these edges, adjacent plates of the joined pairs are also joined together, e.g. by means of spacing strips 5 (Fig. 1) or by cranking and welding (Fig. 9, not shown) along a part only of the other two opposite sides, these latter joined parts at one side of the assembly being in staggered relationship to the joined parts of the same two plates at the other side, e.g. as indicated in Fig. 2. This Figure shows a contraflow apparatus, the spaces between the joined edges 3, 4 of adjacent pairs of plates being closed by a casing 8 and spacing strips 6 (Fig. 1) being welded between the plates of a pair.
Patent GB-655743-A (GB)
Title: Improvements in or relating to the shaping of metal sheets or blanks by pressing andto press tools therefor
IPC: B21D22/22
Filed: 1948-11-02
Abstract: 655,743. Cupping. SMALL, C. J. P. Nov. 2, 1948, No. 28415. [Class 83 (iv)] A method of cupping thin sheet-metal 35 by . pressing to form articles such as loud-speaker diaphragms 33, consists in producing an inward flow of metal at that part of the dome adjacent the sheet from which it is being pressed in a direction transverse to the direction of cupping pressure to compensate for the weakening of the metal thereat due to stretching during the cupping operation. The press comprises a dome-shaped punch 21 and a die provided with segments 14 which extend substantially tangentially around the bore of the die and have their inner ends curved to the same radius as the bore. The segments 14 are connected by pins 13 to sliding members 12 which are disposed in slots 11 in a base 10 of the die and have wheels 19 provided thereon to be engaged by a camsurface 23 on a skirt 22 fixed to the punch so as to reduce the bore of the die as the punch cups the work-piece. An annular work-holder 24 is supported from the punch on pins 25 which also carry springs 27 interposed between the work-holder and a plate 26; the latter may be adjusted towards the work-holder by screws passing through a base 20 for the punch 21 so as to increase the grip of the work-holder. Two annular flanged discs 30, 31 are carried by the work-holder, the disc 31 having a serrated flange to grip the work-holder and a rubber bearing strip 33 disposed between the disc and the work-holder. A bearing strip 18 for the work-piece is received in a rebate disposed in the upper edges of the segments 14 and located within a retaining ring 17 secured by screws to the base 10. As the punch is being withdrawn after the cupper operation, the segments 14 are retracted by leaf-springs 15 secured to the die.
Patent GB-888736-A (GB)
Title: Improvements in or relating to rectifiers
IPC: H02H7/12
Filed: 1958-09-04
Abstract: 888,736. Rectifying. BROWNBOVERI & CIE A.G. Sept. 4, 1958 [Sept. 6, 1957], No. 28426/58. Class 38 (2). [Also in Group XXXVII] In order to protect a three-phase bridge rectifying system 2, 3 in the event of arc-back in a rectifying element a pulse is applied to each rectifying element during each blocking period by means of transformers 4, 5 and rectifying elements 6, the arrangement including a protective device 7 so that if the pulse is passed by the rectifying element (indicating failure) the protective device is operated. The transformers 4, 5 are arranged so that the pulse is applied at the middle of the blocking period. The shortcircuiting arrangement 7 shown may be replaced by protective relays. Alternatively the protective device may operate to reduce the supply voltage or, when grid-controlled elements are used, may provide grid control of the conduction. The rectifying system may use semiconductor elements or mechanical contactconverting elements.
Patent GB-518453-A (GB)
Title: Insecticides
Filed: 1938-09-30
Abstract: 518,453. Insecticides. MONSANTO CHEMICAL CO. Sept. 30, 1938, No. 28456. Convention -date, Oct. 1, 1937. [Class 81 (i)] [Also in Group IV] Insecticides consisting of a tertiary amine of the Formula:- (where R<1> is a phenyl, C-alkyl-or C-halogensubstituted phenyl group ; R<11> is a cyclohexyl or C-alkyl- or C-halogen-substituted cyclokexyl group; and R<111> is an alkyl, chloroalkyl, or alkylol group) admixed with a diluent. The diluent may be either an emulsion to be used as a spray, or a solid forming a dust or powder. Thus the compounds-may be dissolved in an emulsifying oil such as Albasol in the approximate proportions 70 per cent. insecticide and 30 per cent. oil, and this oil solution emulsified in water to a desired concentration. Usually a dilution of 1 part N-alkyl-N-benzylcyclohexylamine to 500 parts water gives a sufficiently potent spray emulsion. Gums such as karaya gum may be added. Dusts or powders may be prepared by milling or grinding the N-alkyl-compound with powdered talc, powdered bentonite, hydrated lime, sulphur, kaolin powder, walnut flour, or similar solid diluent. The preparation of the N-alkyl-N-benzyl-cyclohexylamine in such dusts or powders may vary from about 0.5 to about 10 parts by weight to 100 parts by weight of the solid diluent. A prepared powder consists of 5 parts by weight of N-amyl-N-benzylcyclohexylamine and 100 parts by weight of powdered talc. In examples, (1) emulsions of various insecticidal substances are prepared by dissolving in an equal weight of pine oil and an equal weight of Albasol, and dispersing in water to a dilution from 1-400 to 1-600. These sprays are applied to plants infested with red spider, the kills varying from 22 per cent. with N-amyl-cyclohexylamine to 100 per cent. with N-2-ethylhexyl-N-benzyl-cyclohexylamine; (2) the emulsions in (1) are sprayed on plants infested with the onion thrips, the kills varying from 22 per cent. with N-phenyl-N-benzylcyclohexylamine to 96 per cent. with N-amyl- N-benzyl-cyclohexylamine.