baber/WOPTO huggingface dataset:
Patent GB-517330-A (GB)
Title: Improvements in or relating to electric wave transmission systems
IPC: H04B3/20
Filed: 1938-07-22
Abstract: 517,330. Two-way repeaters. STANDARD TELEPHONES & CABLES, Ltd., WRIGHT, F., C., and ALDRICK, S.E. July 22; 1938, No. 31839. [Class 40 (iv)] Unattended carrier repeaters are switched on and off and controlled as to their direction of transmission by a pilot current which also controls their gain. When the intermediate repeater shown is switched off, its relay BCO, which is controlled oppositely by windings O, R and remains in its set position until restored by one of the windings, is in the opposite condition to that shown. To switch it on, the attendant at either of the terminal stations throws a key RSK, after releasing key K if necessary, to connect the pilot current source to the input instead of the output side of the repeater amplifier A. The increased pilot current after rectification at D is able to energize relay HP which energizes the winding R to restore the relay BCO to the condition shown. The detector D and relay HP are then cut off and battery is supplied to the rest of the apparatus. In the absence of pilot current, i.e., when both terminals have their keys K and relays C operated to put them into the receiving condition, PF is energized by the relapse of LR, which responds to pilot current of normal strength, and energizes PFR which completes an interrupter circuit for IR. This causes intermittent operation of the repeater reversing relay CO, the speed of change-over being governed by a further relay R. When pilot current is received, PF is released and prevents further reversals: The direction of the repeater is indicated at D<SP>1</SP>. When the repeater is to be switched off, the attendant increases the pilot current as for switching on, and then controls a relay S to interrupt it in accordance with a predetermined code. Relay HPL which responds to pilot current of increased strength, energizes a sluggish relay HPLR and repeats the code impulses to a selector which prepares a circuit for the switch-off winding O of BCO. This is completed when HPLR falls on the restoration of the pilot current to its normal level. Gain is controlled by MR which closes contacts mrh, mrl when the level is high or low and remains between its contacts when the level is normal. By this means attenuation is cut into or out of the transmission path at GC except when the level changes are sufficient to release LR or energize HPL in which case the control circuit is opened.
Patent GB-478420-A (GB)
Title: Improvements relating to repeater compasses
IPC: G01C19/40
Filed: 1936-04-14
Abstract: 478,420. Electric signalling systems. SPERRY GYROSCOPE CO., Inc. April 14, 1936, No. 21876/37. Convention date, April 13, 1935. Divided out of 478,344, [Group XXXV]. [Class 40 (i)] A repeater compass is provided with a pointer or the like driven by the repeater motor to indicate when the compass begins to move in a reverse direction. The controlling compass 8 drives the trolley 69 of the follow-up device through motor 7. When the trolley moves off the insulated segments of the controller 9 motor 19 is energized and drives the controller 9 to follow-up the trolley, the compass card 1 being driven through gearing 45, 50. A lost motion device 28 is provided between the motor 19 and controller 9, the extent of lost motion being adjustable by cam 62. An indicator 5 is geared directly to the motor 19 and when the repeater compass is moving in a given direction the compass card 1 and indicator 5 move together. When the repeater motor reverses its direction, the motor 19 must take up the lost motion provided by device 28 before the follower and compass card begin to move. The indicator 5 however is moved by the motor directly so that it moves quickly across the face of the compass card to show that a change in the direction of movement has taken place.
Patent GB-405042-A (GB)
Title: Improvements relating to coal and like cleaners or separators
IPC: B03B4/00
Filed: 1932-08-04
Abstract: 405,042. Separating solid materials. BYRNE, E. L. W., 329, High Holborn, London.- (American Coal Cleaning Corporation; Welch, West Virginia, U.S.A.) Aug. 4, 1932, No. 21903. [Class 117.] In apparatus for separating materials of different density, such as in the cleaning of coal, of the type comprising an air previous jigging table on which the mixed materials are subjected to the combined jigging movement of the table and an upward current of air, (i) a reciprocating trough is provided for conveying the middlings product back to the feed hopper, and (ii) a receiver for conveying the middlings back to the feed hopper co-operates with an adjustable tailings delivery device so as to regulate the proportion of the tailings returned as middlings. The invention is described as applied to a table A, Fig. 2, of known construction which is reciprocated on toggle support plates, and delivers the separated products at both sides. Two troughs B, C are disposed at the opposite sides of the table and are reciprocated on toggle supports inclined so as to convey the material therein in an opposite direction to its movement on the table. The troughs are spaced from the sides of the table so as to allow the separated products to pass to collecting bins but at the tailings riffles 22, 23 the gap is bridged by a shelf comprising a fixed plate b and an adjustable plate c with a cutting lip d. This arrangement allows for adjusting the proportion of tailings passing into the lower ends of the troughs. Openings 24, 25 are provided in the bottoms of the troughs which are adjusted in size by sliding plates a to determine the proportions which are discharged as waste and which are returned as middlings. The troughs may be arranged to deliver into the back of the feed hopper as shown at s or on to a more forward part of the table. For driving, the troughs may be connected directly to the table by a rod, and adjustment may be provided by inserting in the rod connections a resilient packing the compression of which is variable. Alternatively, the troughs may be driven independently from a shaft having a crank-arm of variable length. Fig. 5 shows the arrangement of the trough supporting toggle plates G which are seated in grooves 30, 31 on the frame and the underside of the troughs and are held therein by springs 32. The troughs may be lined with friction material or with transversely corrugated strip to assist the travel of the material.
Patent GB-1073354-A (GB)
Title: Improvements in brake or clutch linings
Inventor: KRAFT PAUL
IPC: F16D69/02
Filed: 1964-05-27
Abstract: A brake or clutch lining comprises an intimate mixture of (A) 10 to 70 wt. per cent of sintered inorganic friction composition having a grain size of 0.1 to 5 mm. and comprising (i) a metal powder and (ii) a mineral abrasive and (B) 90 to 30 wt. per cent of an organic friction composition comprising (i) an inorganic filler and (ii) an organic binder.  Specified ingredients are (A) (i) Cu, Pb, Sn, Fe, Zn, Ni, Co and brass; (A) (ii) silica, alumina, clay, silicon carbide and corundum; (B) (i) asbestos, barytes, glass wool or particles, metal strands and metal oxides, and (B) (ii) natural or synthetic rubber and phenol-, cresol- or urea-formaldehyde resins.  Optional ingredients mentioned are graphite and molybdenum disulphide.ALSO:A brake or clutch lining comprises an intimate mixture of (A) 10 to 70 wt. per cent of sintered inorganic friction composition having a particle size of 0.1 to 5 mm. and comprising (i) a metal powder and (ii) a mineral abrasive and (B) 90 to 30 wt. per cent of an organic friction composition comprising (i) an inorganic filler and (ii) an organic binder.  Specified ingredients are:-(A) (i) Cu, Pb, Sn, Fe, Zn, Ni, Co and brass; (A) (ii) silica, alumina, quartz, magnesia, clay, silicon carbide and corundum; (B) (i) asbestos, barytes, glass wool or particles, metal strands and metal oxides; and (B) (ii) natural or synthetic rubber and phenol-, cresol-or urea-formaldehyde resins.  Optional ingredients mentioned are graphite and molybdenum disulphide.
Patent GB-478822-A (GB)
Title: Improvements in softening agents for polymerised vinyl compounds
IPC: C08K5/10
Filed: 1936-08-10
Abstract: Organic esters of monoarylethers of poly hydric aliphatic alcohols or mixtures thereof are used as softeners for polymerized vinyl compounds.  Other substances, such as stabilizers, fillers, pigments, dyestuffs and fibrous materials may also be present. Suitable esters include aliphatic, aliphatic aromatic or aromatic acid (such as propionic, maleic, benzoic, phenylacetic, chlorinated higher fatty and chlorinated aromatic carboxylic acids) esters of monoaryl (such as phenyl, cresyl and xylenyl) ethers of polyhydric aliphatic alcohols (such as ethylene glycol, propylene glycol, diethylene glycol, polyglycol, glycerine and polyglycerine).  Polyvinyl compounds specified include polymerization and interpolymerization products derived from vinyl chloride, organic vinyl esters, vinyl ethers, acrylic acid, methacrylic acid esters and nitriles, styrene, and chlorination products of such polymers such as after - chlorinated polyvinyl chloride.  The softeners may be added before polymerization or worked into the polymers by such methods as mixing, rolling or kneading.  The products may be worked up by casting, rolling, pressing and spraying and used in the manufacture of films, intermediate layers for compound glass, adhesives, cable compositions, artificial leather and linoleum.  In examples: (1) polyvinyl chloride is blended with the phenylacetic acid ester of glycerine ditolyl ether or the benzoic acid ester of diethylene glycol monoxylenyl ether; (2) an interpolymer of vinyl chloride and methyl acrylate is blended with the maleic acid ester of ethylene glycol monoxylenyl ether, the phenylacetic acid ester of diethylene glycol monoxylenyl ether and tricresyl phosphate, the chlorbenzoic acid ester of ethylene glycol monochlorxylenyl ether or, in aqueous emulsion, with the benzoic acid ester of ethylene glycol monoxylenyl ether ; (3) polymerized methyl methacrylate is blended with the chlorbenzoic acid ester of ethylene glycol monoxylenyl ether ; (4) interpolymerization products of vinyl chloride and styrene are blended with the phenylacetic acid ester of ethylene glycol monochlorxylenyl ether or the chlorbenzoic acid ester of diethylene glycol monoxylenyl ether ; (5) methyl methacrylate is polymerized in aqueous emulsion with the phenylacetic acid ester of ethylene glycol monoxylenyl ether ; and (6) methyl acrylate and vinyl acetate are interpolymerized in aqueous emulsion in the presence of the chlorbenzoic acid ester of diethylene glycol monoxylenyl ether.  The products in the examples are worked up into foils or films.  The organic esters of monoaryl ethers of polyhydric alcohols may be prepared by esterifying the monoaryl ethers in the presence of esterification catalysts.
Patent GB-583625-A (GB)
Title: Improvements in electric arc welding
IPC: B23K9/20
Filed: 1944-11-09
Abstract: 583,625. Supply systems for welding arcs. ENGLISH ELECTRIC CO., Ltd., and CHADWICK, G. Nov. 9, 1944, No. 22056. [Class 38 (iv)] In an arc welding system wherein two metal objects are forced into contact with each other subsequent to an arc being struck between them, unidirectional current is derived from ignition controlled mercury vapour valves, preferably ignitrons 2 and 3, the cathodes 2b and 3b of which are connected together and to a choke coil 9 in the welding circuit and anodes 2a and 3a of which are connected to the ends of the secondary 1b of transformer 1, the primary of which is connected to a single-phase A.C. supply. The welding circuit is completed to a centre tap on the secondary 1b, through the objects 4, 5 to be welded, one of which (5) is held in the desired position by a gun 6 capable of withdrawing the said object to strike the arc and then forcing it into contact with the other object (6) until the weld has solidified. The object 5 may be provided with a fusible projection 5a by which the arc is started. The valves conduct alternately during the time that contacts 6a of a timing device 6 remain closed to complete the ignition circuits through 'rectifying means after operation of the starting switch 7. When welding current ceases, due to the opening of contacts 6a, contact 6b closes to effect release of a latching means within the gun, the loading spring of which then forces the object 5 into contact with object 4 to give a percussion weld. The ignitrons or valves may be cooled by being immersed in oil in a tank which may be that containing the transformer 1. In a modification for application to polyphase supply, separate ignitrons are employed for each phase of a polyphase transformer, the anodes being connected to the ends of the respective secondaries, the cathodes connected together and to the gun and the workpiece upon which the weld is being made, connected to the secondary star point.
Patent GB-1135068-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L23/48
Filed: 1966-05-18
Abstract: 1,135,068. Semi-conductor device. CKD PRAHA, OBOROVY PODNIK. 18 May, 1966 [22 May, 1965], No. 22078/66. Heading H1K. A semi-conductor device comprises a planar semi-conductor element wherein pressure contacts are made by electrode contact plates to the contact surfaces of the element and wherein the plates and the surfaces are provided with a rhodium layer. A silicon diode is machined to give a specified roughness and flatness and a rhodium layer applied thereto galvanically. The layer is ground to a smaller roughness than the initial roughness using a rhodium-faced grinding tool and then another layer of rhodium applied which may or may not be ground by the tool. The contact faces of the element and the electrodes are mutually ground-in, one of the electrodes being urged by a spring exerting gradually rising pressure until the value for the pressure contacts of the element is obtained. During grinding-in, the electrodes are clamped and the semi-conductor element moved. In an alternative embodiment, the layer of rhodium is applied so thick that it may be ground level in one operation. The completed device may be encapsulated. An intermediate metal plate having a similar coefficient to the semi-conductor element may be interposed between the element and the contact plate.
Patent GB-1104938-A (GB)
Title: Improvements in or relating to 7-aminocephalosporanic acid
Inventor: WETHERILL LEWIS AUBREY
IPC: C07D501/18
Filed: 1964-05-28
Abstract: Crude 7 - aminocephalosporanic acid is purified by forming a solution of an acid addition salt of 7-ACA, or an acid addition salt of a base salt of 7-ACA, with a hydrocarbyl sulphonic acid or with HNO3; removing solid impurities from the solution, recovering the acid addition salt from the solution and, if desired, regenerating 7-ACA from the salt.  The hydrocarbyl sulphonic acid is preferably an alkylbenzene sulphonic acid wherein the alkyl contains 1 to 18 C atoms, e.g. p-toluene sulphonic acid. Methane sulphonic acid and naphthalene sulphonic acids may be used.  7-ACA may be recovered from the salt by (a) adjusting a solution in an alkanol to pH 3.5 by addition of a base e.g. NH4OH; or (b) dissolving in N,N-dimethylacetamide or N,N-dimethylformamide and pouring into water.  7-ACA may be acylated e.g. with thienylacetyl chloride or according to Specification 1,104,938; or the 3-acetylmethyl group may be replaced by an azide, thiobenzoate or other group.  A typical compound is 7 - aminocephalosporanic acid hydrogen p-toluene sulphonate dihydrate.
Patent GB-262186-A (GB)
Title: Improvements in and relating to brake mechanism of vehicles
IPC: B66D5/00
Filed: 1925-09-04
Abstract: 262,186. Welin, A. Sept. 4, 1925. Blocks and shoes acting on drums; actuated or applied by springs. - In a braking system, more particularly for winches, one or more members to be braked are each provided with a plurality of brakes formed with materials having different coefficients of friction and means are provided for successively or simultaneously applying and releasing the brakes. Also the front-wheel brakes of a vehicle may be lined with a material having a coefficient of friction differing from that lining the back-wheel brakes. The shoes 1, 2 pivoted on a pin 3 are applied by a spring 8 surrounding a rod 7 passing through extensions 6, 12 of the shoes and are released by pivoted arms 17, 18 mounted on a rotatable block 16. The arms 17, 18 are adapted to engage in recesses in the extension 6 of the shoe 1 and in a block 11 attached to the rod 7 and bearing on the extension 12 of the shoe 2. The recess in the block 11 is a greater depth so that, on rotation of the block 16, the shoe 1 lined with the material having the higher coefficient of friction is first released. A spring 12a of the Belleville type bears on the extension 12. The braked member has pivoted thereon pawls 20 each having an extension 22 carrying a blade spring 23 which presses upon the adjacent pawl. The extensions 22 tend to prevent, by centrifugal force, disengagement of the pawls.
Patent GB-170135-A (GB)
Title: Improvements in fluid meters
IPC: G01F1/52
Filed: 1920-07-26
Abstract: 170,135. Schroeder, R. W. July 26, 1920. Measuring-apparatus.-A flow-meter comprises an inner tube 5, Fig. 1. screwed into a fitting 2 and provided with a slot 6 and a movable member 7. An outer tube is supported in the fitting 2 and secured by a cap 15, acted on by a nut 9, on the upper end of the inner tube, a vent plug 16 being provided. In a modification, a weighted vane 22, Fig. 5, works in a compartment 20 communicating through a slot 26 with a compartment 24, and a pet-cock 25 is fitted.
Patent GB-504434-A (GB)
Title: Radio direction finding systems
IPC: H01F17/04
Filed: 1938-07-26
Abstract: 504,434. Directive wireless signalling. LORENZ AKT.-GES., C. July 26, 1938, No. 22217. Convention date, July 26, 1937. Addition to 490,650. [Class 40 (v)] Relates to a system in which several separate radio-goniometers are coupled to a single crossed - frame or Adcock aerial, in order to take several independent readings, and in which coupling- coils are inserted in each circuit to compensate for mutual interaction, as described in the parent Specification. According to the present invention, each of the compensating-coils is subdivided into two parts, and these are wound, in groups of three, in recesses in a former 5 fitted with a powdered-iron core 4. The core is mounted in a casing 7 fitted with a powderediron disc 8 on a lid 9 which can be screwed in or out to adjust the effective inductance of the coils. The grouping of the coils enables the mutual coupling to be equally distributed.
Patent GB-1489583-A (GB)
Title: Echo sounder
IPC: G01S15/88
Filed: 1975-05-16
Abstract: 1489583 Echo sounder F WOOD 16 May 1975 [18 May 1974] 22283/74 Heading G1G In an echo sounding system a remote underwater transducer being towed by a vessel, e.g. a transducer mounted on a fishing net, is connected electrically to display equipment on the vessel by a cable which is not metal-screened, the sea water being relied on to provide electrical screening. The preferred cable is flat twin cable comprising coppercoated high tensile steel cores embedded in a plastic insulating sheath. The avoidance of metallic screening reduces cost and permits acoustic frequencies up to 200 kHz to be used without unacceptable power loss in the cable. Frequencies this high provide good resolution and allow the use of small transducers.
Patent GB-655002-A (GB)
Title: Improvements in or relating to knives, forks and similar articles of cutlery
IPC: A47G21/02
Filed: 1948-08-24
Abstract: 655,002. Cutlery &c. handles. GREEN, G. Aug. 24, 1948, No. 22294. [Class 61(i)] In a knife, fork or other article of cutlery a combined bolster and ferrule 1, Fig- 1, is provided with a single transverse slot at 2 for the tang 7 of the blade 3 and at its handle receiving end is formed at its extremity with a beaded or flanged edge 5 which provides thereat,. parallel therewith. an internal abutment shoulder 6 against which the end of the handle 4 seats either directly as shown in Fig. 1, or through the medium of an interposed fillet in the form of a centrally orificed plate 10 Fig. 2 or Fig. 3 (not shown). The bolster and ferrule is secured to the blade or tang. by means of solder 11. The tang 7 is a tight fit within the hole 8 in the handle 4 or is secured by cement or the like. In Fig. 2 a ferrule 9 is interposed between a pearl handle 4 and the bolster 1, the ferrule 9 being filled with cement.
Patent GB-699211-A (GB)
Title: Reversible sponge cushions
IPC: A47C27/15
Filed: 1951-09-25
Abstract: 699,211. Cushions. UNITED STATES RUBBER CO. Sept. 25, 1951 [Sept. 26, 1950], No. 22367/51. Class 52(iv) Superposed slabs 10, 11 of sponge rubber, cut from the sheet and preferably cavitated, are bounded by boxing strips 25, also of sponge rubber, of less height than the assembly. The re-entrant edges 27...30 are cemented together to produce rounded edges to the cushion. Crowned surfaces can be produced bv use of an insert of smaller area between the slabs.
Patent GB-893726-A (GB)
Title: A process for the continuous manufacture of vinylidene chloride
IPC: C07C17/25
Filed: 1959-06-30
Abstract: Vinylidene chloride is prepared in continuous manner by reacting 1,1,2-trichloroethane in the gaseous state with an aqueous solution of an alkali metal hydroxide or an aqueous suspension of an alkaline earth metal hydroxide.  The trichlorethane may be used in admixture with steam.  The preparation of vinylidene chloride from trichloroethane and milk of lime at approximately 85 DEG C. and atmospheric pressure according to the process of Specification 799,206 is disclaimed. Specification 638,117 also is referred to.
Patent GB-189224-A (GB)
Title: Improvements in or connected with the magazines of typographical composing machines
IPC: B41B11/06
Filed: 1921-08-24
Abstract: 189,224. Hart, H., (Mergenthaler Linotype Co.). Aug. 24, 1921. Magazines for type - bar - making machines. Relates to means for varying the width of certain of the magazine entrance-channels to adapt the entrance to the requirements of different founts of matrices having their tooth-combinations or projecting ears in different set-ways positions. In the arrangement described, the partitions of the entrance are in three groups D, E, F, Fig. 3, one of which is fixed. and the other two adjustable in opposite directions. The fixed partitions D are attached to the bottom-plate of the entrance, which consists of two spaced sections D<1>, D<2>, Fig. 1, between which are located two sliding plates E<1>, F<1> carrying the adjustable partitions. The plate E<1> is guided by ribs B<4>, Fig. 7. on the entrance frame, and the plate F' is seated in a recess in the plate E<1>, the plates E<1>, F' forming a continuous surface with the plates D<1>, D<2>. The fixed partitions are secured at their front edges to a keeper-plate D<5>, and the movable partitions to keeper-plates E<7>, F<6>. The movable partitions are adjusted by hand or automatically from the magazine-shifting means, for example, the plates E<1>, F<1> may be connected to the two arms of a lever G, so as to move in opposite directions, and the plate E<1> may be shifted by the action of gauge-pieces on the magazines or on the magazine shift-frame. The extent of movement of the movable partitions may be varied.
Patent GB-1168914-A (GB)
Title: Improvements in or relating to Bearings
Inventor: HEATH LEONARD
IPC: F16C33/14
Filed: 1967-05-16
Abstract: 1,168,914. Welding by fusion. GLACIER METAL CO. Ltd. 16 May, 1968 [16 May, 1967], No. 22590/67. Heading B3R. [Also in Division F2] A plain journal bearing having a steel backing 2 has flanges 6 and 7 integrally united with it by an electron beam weld. The edges of the journal are chamfered at 4 and 5 and abut corresponding chamfered surfaces 8 and 9 on the flanges. On application of an electron beam the material of the abutting surfaces fuse. The cylindrical surface of the bearing may be provided with linings 3 of aluminium tin or sintered copper lead, and the flanges which may be employed as thrust bearings, may be provided with linings 10 and 11 of white metal, babbit or cast copper lead.