baber/WOPTO huggingface dataset:
Patent GB-178911-A (GB)
Title: Improvements in or relating to sound reproducing machines
Filed: 1921-01-21
Abstract: 178,911. Kitchen, J. G. A. Jan. 21, 1921. Sound-magnifying appliances. - Relates to sound-reproducing machines of the kind in which sound is emitted at burners where a combustible fluid through which the sound waves are transmitted, is ignited, the supply of the fluid to the burners being made intermittent by means of a vibrating body. According to the invention, the apparatus, which is adaptable to an ordinary gramophone, comprises a sound box, such as is shown in Fig. 5, in which the chamber 1 is transversely divided by a diaphragm 2 arranged between outlets 14, 15 leading to the soundemitting devices. The arrangement is such that sound is transmitted from both sides of the dia phragm. In the construction shown in Figs. 1 and 2, each sound-emitter 16, 17 is a burner. Gas is supplied to the burners, which are constructed as described in Specification 132,408, through flexible tubes 27, Fig. 1. A resonator 28 may be mounted as shown. In a modification one of the burners 16, 17 may be replaced by a horn the mouth of which is directed towards a burner disposed on the opposite side of the soundbox.
Patent GB-1218421-A (GB)
Title: Laser link communication system
Inventor: WALKER HAROLD R
IPC: H04B10/50
Filed: 1968-01-18
Abstract: 1,218,421. Communication system. LASER LINK CORP. 18 Jan., 1968 [6 Feb., 1967], No. 2846/68. Heading H4R. [Also in Division G1] A communication system comprises a radiofrequency transmitter and receiver, conversion means for frequency modulating a laser beam with the received information and for projecting the laser beam, at least one station for receiving the laser beam and detecting the information, and communication lines for connecting the station output to local utilisation apparatus The system is applied to distributing a television programme particularly using laser transmission from a high city building to adjacent buildings. The system may transmit a pilot whereby the system is switched to substitute an R.F. television transmission system for the laser system in the event of excessive light absorption during fog, smog, or heavy rain. The beams may be expanded to prevent burn damage and may be transmitted in a number of directions, or a single beam may be tapped at a succession of receivers which reflect or retransmit the beam. The modulating element 27, Fig. 7, which may be a Pockels cell of lithium tantalate is included as an element in a Colpitts oscillator, the frequency of which is determined by a varactor 26t acted on by the information input at 30. The laser may have a Brewster's Angle termination 35 from which the beams modulated in their passage between mirrors 34a and 34b are transmitted. Alternatively a laser beam may have its output polarized by a Rochon Prism and the polarization may be rotated.
Patent GB-840368-A (GB)
Title: Lubricants containing fatty acids esters of saccharides
Filed: 1959-01-27
Abstract: A lubricating composition, especially a lubricating grease, comprises a major proportion of lubricating oil, 3-40% wt. per cent of an ester formed between 1 mol. of a disaccharide and 1-3 mols. of a C12-C32 fatty acid, and 5-40 wt. per cent of an alkaline earth metal salt of a C2-C6 fatty acid.  The lubricating oil may be a mineral or synthetic oil or mixtures thereof.  Synthetic oils mentioned are esters of dibasic acids (e.g. di-2-ethyl hexyl sebacate), esters of glycols (e.g. C13 oxo acid diester of tetraethylene glycol), complex esters, formals, silicones, carbonates and polyglycols.  The disaccharide may be sucrose, maltose, lactose or cellobiose. Other ingredients which may be present are detergents (e.g. calcium petroleum sulphonate), corrosion inhibitors (e.g. sorbitan mono-oleate), pour depressants, dyes and other thickeners (e.g. polymers of C2-C4 mono-olefins, clay, carbon black or silica gel). In the examples, the preparation is described of mineral lubricating oil compositions containing sucrose mono- or distearate, calcium acetate (in hydrated or anhydrous form) and phenyl-alpha-naphthylamine.
Patent GB-565783-A (GB)
Title: Improvements in and relating to fluid pressure operated tools
IPC: B25D17/08
Filed: 1943-02-22
Abstract: 565,783. Percussive tools. RUBBER BONDERS, Ltd., GORDON, H. E. ZENTLER-, and BECK, N. Feb. 22, 1943, No. 2901. [Class 124] In a fluid-pressure operated percussive tool, one or more sleeves l, m, Fig. 1, of natural or synthetic rubber or like resilent material are located or extend above the top of the tool head a and are bonded to the tool and to the handle d so that vibration is damped by the resilient material in shear. The upper and . lower surfaces of the sleeves are substantially conical, so that vibration of excessive amplitude will also be absorbed by compression. In a modification, a somewhat similar handle unit is made separately and bolted above the head uf the tool. The two sleeves parallel to the axis of the tool may be replaced by a single sleeve coaxial with the tool. In the form shown in Fig. 3, the sleeve v is arranged transversely, and to one side of the axis of the tool, within a lug w extending upwardly from the head of the tool. A frusto-conical sleeve 24, Fig. 8, of resilient material may be bonded to the drill steel 23 and to a metal sleeve 26, a packing ring 30 of soft rubber being arranged between the upper ends of the sleeves 24, 26 and the internal shoulder 29 of a cap 27 forcefitted on the sleeve 26.
Patent GB-1082312-A (GB)
Title: Improvements in or relating to a lathe or other machine tool having a power-operated huck
Inventor: SMITH DONALD RAYMOND
IPC: B23B31/175
Filed: 1964-01-23
Abstract: 1,082,312. Machine tool details. ALFRED HERBERT Ltd. Jan. 25, 1965 [Jan. 23, 1964], No. 2916/64. Headings B3B and B3T. In a lathe having a plurality of work spindles, each of which has a chuck, carried by an indexable support, one of the spindles 5 is a work-loading station, and a chuck 1, 2 has its jaws 4 opened or closed at this station, by a non-circular key 8. The chuck has a rotatable member 3 which opens or closes the jaws by means of levers, and the member is rotated by key 8 which is rotated in spindle 5 by a worm and wheel 18, 16, driven by a fluid motor 23. The key is also moved axially so as to engage or disengage its end 7 with member 3, by a fluid pressure piston 11, which acts against a spring 15 in a block 12. In operation, with a chuck engaged with spindle 5, fluid is supplied to motor 23, and to a passage 29 in block 12. Piston 11 is pushed into its lowest position by key 8, and the fluid passes through port 30, therefore reducing the pressure supply to the motor, which therefore operates at low speed. When end 7 enters the socket in member 3, spring 15 pushes piston 11 upwardly, and port 30 is closed. The pressure supply to motor 23 increases, and the latter delivers a greater torque. A booster is provided in the fluid circuit to supply a still greater torque, when the chuck is to be unlocked to release the workpiece.
Patent GB-639197-A (GB)
Title: Improvements in or relating to cathode ray tube deflecting systems
Inventor: PLAISTOWE DONALD LEOPOLD
IPC: H03K4/26
Filed: 1947-01-30
Abstract: 639,197. Pulse circuits ; radiolocation MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 30, 1947, No. 2956. [Classes 40 (vi) and 40 (vii)] In a magnetic deflection circuit, two valves are connected in series across the supply, the coil being arranged between the junction of the valves and the junction of a second pair, current-flowing through one valve of the first pair, thence through the coil and the other valve of the second pair. When valve AV2 is rendered conducting, Fig. 1, by a deflection voltage applied to the grid, the anode current flows through the deflection coil L and valve BV1, the potential drop across resistor AR1 biassing off valve AV1, while valve BV2 is maintained cut-off. Two circuits may be employed to give a P.P.1 type display, sawtooth voltages, having as an envelope the succeeding half-cycles of a sine wave being fed to valves AV2, BV2, Fig. 2 (not. shown), and saw-tooth voltages having as an envelope cosine waves to a similar circuit with the deflection coil mounted.perpendicular to coil L. In a modification, Fig. 3, providing a P.P.1 display, the valves AV2, BV2 are arranged to generate saw-tooth currents in coil L, when rendered conducting. Valve AV2, normally biassed beyond cut-off due to diode AD conducting, is rendered conducting by a triggering potential applied at terminal T. The halfsine wave applied to grid resistor AR3 results in a saw-tooth current proportional to its instantaneous amplitude appearing in coil L. The feedback capacitor AC and resistor AR2 are chosen in relation to the circuit resistance and inductance. Valve BV2 is rendered conducting during the succeeding half-cycle which is applied to resistor BR3. The impedance of valves AV1, BV1 may be maintained more constant by the use of further cathode resistors which give negative feedback.
Patent GB-113494-A (GB)
Title: Improvements in Digesters for use in the Manufacture of Cellulose and like Operations.
Inventor: SCHAUFFELBERGER EMIL
IPC: D21C3/28
Filed: 1917-02-28
Abstract: 113,494. Schauffelberger, E. Feb. 28, 1917. Digesters.-In apparatus for digesting bamboo, esparto, wood pulp, and the like, to prevent clogging and incrusting of the pumping and heating devices, a separator is provided to remove the scum and other impurities from the liquor. In the apparatus shown, the liquor is forced upwards through the digester a and is drawn off through a pipe f and led through a separator h before entering the heater g. It is then returned to the bottom of the digester by the pump c. The liquor enters the separating tanks through trumpet-shaped vessels i, the impurities rising to the top of the tanks and the purified liquor passing away through strainers k at the bottom. The tanks may be provided with rotary blades to assist the separation. Gasseparators m for the separation of gases from the liquor are arranged on top of the tanks. The outlet pipe from the digester may terminate in a float and a flexible connexion so that it' follows the drop in level of the liquor. The pump may be arranged between two separators in front of the heater. A strainer having relatively large apertures may be fitted in the upper part of the digester.
Patent GB-1087632-A (GB)
Title: Improvements in or relating to the de-reeling of wire and other filamentary materials
Inventor: BENNETT PETER IAN
IPC: B65H59/08
Filed: 1964-01-23
Abstract: 1,087,632. Unwinding bobbins. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 17, 1964 [Jan. 23, 1964], No. 2986/64. Heading D1J. The brushes 27 prevent the turns on reel 5 about to be unwound from dropping downwardly if unwinding of the filamentary material 23 is temporarily stopped. The supports 25, for the brushes, can be rotated about their vertical axes and the guide ring 29 can be removed therefrom to permit the operator to remove an empty reel and replace it with a full reel. The reel 5 may have its axis vertical or horizontal and may be static or rotatable.
Patent GB-466830-A (GB)
Title: Improvements in switches for converting electric currents
IPC: H02M1/30
Filed: 1936-01-31
Abstract: 466,830. Rotary distributers and conducting-liquid switches. GENERAL ELECTRIC CO., Ltd., and LE ROSSIGNOL, R. Jan. 31, 1936, No. 2993. [Class 38 (v)] In an electric converter of the kind in which current is controlled by electrolyte, the electrolyte which conducts current is contained between relatively rotatable opposing surfaces narrowly spaced apart and comprising conductive portions or electrodes, at least one of the surfaces presenting a surface continuously opposed to an electrode of the other surface as relative rotation occurs. As shown in Figs. 1 and 2 a series of electrodes 3 are mounted in the internal surface of an insulating cylinder 1 which surface is separated by a narrow gap of the order of 0À02 ins. from a rotatable member 11. The member 11 formed of metal has on its outer surface a number of exposed electrode portions 12 which are separated by portions 13 of insulating material dovetailed into the member 11. Between the two relatively-rotatable contact-carrying surfaces electrolyte is contained which is maintained at pressure by being drawn up from a container through a duct 19, Fig. 2, in the driving shaft 14 and forced centrifugally along ducts 17 in the spokes 16 terminating near the leading edge of the electrode surfaces 12. When the electrodes 12 are not opposite any of the relatively fixed pairs of contacts 3 the small cross-section of the electrolvte causes the current flow to be substantially broken apart from a small leakage but as the electrodes come opposite a pair of fixed contacts they are bridged through the electrolyte. As shown, the three pairs of electrodes correspond to three supply phases though other contact arrangements may be employed which may enable the rotational speed to be reduced. The electrodes may be mounted on an insulating drum in which case they are cross-connected. The inner rotatable member need not form a complete cylinder as shown but may be an arc having its centre on the axis of rotation of the single rotary electrode. In this case a body of electrolyte is carried round between radially-extending packing pieces at the sides of the electrode. Barriers 28 in the container 22 for the electrolyte prevent excessive rotation of the liquid and a valve 27 controls the flow. Passages for the escape of gas extend rearwardly from recesses 21 in the outer surfaces of the rotary electrodes 12 and upwardly at 18 from the ducts 17, the gas being vented through apertures 25.
Patent GB-924982-A (GB)
Title: Improvements in or relating to electric fuses
IPC: H01H85/143
Filed: 1961-01-26
Abstract: 924,982. Fusible cut-outs. BROWN, BOVERI & CIE A.G. Jan. 26, 1961 [Feb. 5, 1960], No. 3051/61. Class 38 (1). The fuse elements 2, arranged along a cylindrical surface within a sand-filled tubular insulator 1 are welded or soldered to plateshaped terminal pieces 4 having flanges 4a which snap fit into grooves 5 on the insulator 1.
Patent GB-484339-A (GB)
Title: Improvements in and relating to the manufacture and production of artificial filaments, threads and the like
IPC: D01D10/04
Filed: 1937-02-02
Abstract: <PICT:0484339/IV/1> Incompletely coagulated artificial threads, filaments and the like, formed by extrusion into an evaporating or coagulating medium, are gradually stretched by passing them several times round a pair of similar conical rollers.  These rollers rotate with substantially equal angular velocities and are arranged side by side with their apices pointing in substantially the same direction but with their axes slightly inclined to one another in the same or different planes.  Thus the thread is caused to travel in a series of helical loops from the narrow to the broad ends of the rollers.  In the Figure, the axes 1 and 2 of the two rollers 3 and 4 lie in the same plane.  The thread 5 is passed on to the roller 3 at the narrow end, is wound round the pair of rollers as shown, and leaves the roller 4 at the broad end, from which it passes to further treatment, for example, to a collecting or cutting device.  The threads, while passing the rollers, may be treated with liquids, for example, by immersing one or both rollers partially or completely in the liquid.
Patent GB-746112-A (GB)
Title: Improvements in or relating to apparatus for assembling shell moulds
Inventor: MILLIGAN WILBUR EDWARD
IPC: B22C23/00
Filed: 1954-02-02
Abstract: 746,112. Moulding-machines. WALWORTH CO. Feb. 2, 1954 [Feb. 20, 1953], No. 3096/54. Class 83 ( 1 ). Apparatus for assembling thermosetting adhesive-coated sections of shell-type moulds comprises a conveyer on which adhesive-coated surfaces of the shell-moulds are held together by clamping-means and carried into and out of a heated zone. The conveyer 10 comprises four circumferentially-spaced frames 14 on which matching mould-sections 34, 36, Fig. 6, may be clamped between springs 26 attached to cramps 22 secured to the frames 14, and yieldable-elements 38 on shafts 40-43 interconnected at their ends by bevel-gear units 46 and rotatable together by a ratchet wheel 66 secured to an extension of one shaft 40 and operated by a hand lever 64. The elements 38 each comprise a collar 47 keyed to the shaft and having an arm 48 connected through a bolt 58 and spring 60 to the bifurcated end 54 of a lever 52 loosely mounted on the shaft, so that when the shaft is rotated in one direction the other end 62 of the lever 52 is resiliently urged against the top mould-section to hold it against the bottom-section 34 resting on the springs 26, and when the shaft is rotated in the opposite direction the mould-sections are released. The conveyer 10 is pivotally mounted by a shaft 80 in bearings in a structure 16 and is rotatable in steps of 90 degrees by a fluidpressure motor 102 operating a rack 88 engaging a toothed quadrant 90 loosely-mounted on the shaft 80 and carrying a ratchet 97 which releases a spring-loaded pawl 94 and actuates a four-tooth ratchet-wheel 92 keyed to the shaft 80. The adhesive-coated mould-sections are loaded at station A and then moved by rotation of the conveyer by the motor 102 to the station B where they are heated to set the adhesive by a burner 108 pivoted on trunnions 112 and movable towards and away from the adjacent frame 14 by a lever 120 actuated by a fluid-pressure motor 124. Supply of fluidpressure to the motors 102 and 124 is controlled by a foot-switch 106 and is arranged so that during the first part of an indexing movement of the conveyer 10 the burner is moved away to the dotted position and is returned to its position adjacent the mould-sections after the conveyer movement is completed. The jointed 'mould-sections are removed at station A and replaced by further sections to be assembled. In a modification, Figs. 10 and 11 (not shown), the conveyer rotates about a vertical axis.
Patent GB-1022956-A (GB)
Title: Process for making organopolysiloxanes
IPC: C08G77/00
Filed: 1963-01-24
Abstract: In making a benzene-soluble siloxane having a uniform molecular weight distribution from a prepolymer composed of 90 to 100 mol per cent of RSiO 3/2 units, any remaining siloxane units having the formulae R1[CN(CH2)m]SiO, R111SiO 3/2 , R1R11SiO and CN(CH2)mSiO 3/2 , wherein R is an aryl radical, R1 and R11 are selected from aryl, alkyl and alkenyl radicals, R111 is a lower alkyl radical, and m is 2, 3 or 4, (1) a solution of the prepolymer is formed, the solvent being present in an amount of from 0.75 to 10 parts (by weight) per part of the pre-polymer, (2) the solution is heated at a temperature sufficiently high to remove solvent in excess of 30 weight per cent, and (3) the heating is continued to reduce the solvent concentration to conform with the formula c  = 0.045 (M/X)1.4, where c  is the desired int. visc. of the final siloxane in benzene, M is the weight of the prepolymer and X is the weight of the solvent in the condensed stage in contact with the prepolymer, (4) and thereafter the heating of the remaining solvent and prepolymer is continued in the presence of an alkaline re-arrangement and condensation catalyst for the siloxane under conditions such that the concentration of the remaining solvent and pre-polymer is maintained constant until a higher M.W. siloxane is obtained having an int. visc. in benzene at 25 DEG  C. of at least 0.4 decilitre per gram.  Known methods of making the pre-polymers are described.  Solvents specified are diphenyl, diphenyl oxide, methylphenylether, ethylphenylether, cyclohexane, benzonitrile, mesitylene, durene, benzene, toluene, xylene, m-dimethoxybenzene, pyridine, pyrrole, 4-picoline, 2,6-lutidine, nitrobenzene, fluoro-benzene, o-nitrophenetole, dibenzofuran and mixtures of these solvents.  Examples are given. Uses.-They may be dissolved in solvents, e.g. benzene, and used (i) to coat and insulate metal conductors; (ii) to render textiles, especially inorganic fibrous materials, heat resistant; (iii) for bonding surfaces together; (iv) as coating compositions by admixing therewith fillers, e.g. silicas (fume, aerogel and pptd.) C black, Al powder, TiO2 and Fe oxide; (v) in making laminates (see Division B5) which can be used for electrical insulation or insulating tapes or as nose cones for rockets and other projectiles; the solutions may also be cast on flat surfaces to provide films for use as slot liners and as end turn winding insulation in motors.
Patent GB-764773-A (GB)
Title: Apparatus for raising, lowering and transporting axles or axle casings of vehicles
IPC: B66F5/02
Filed: 1955-02-02
Abstract: 764,773. Lifting jacks. CARR, R. S. Feb. 2, 1955, No. 3143/55. Class 78 (3). Apparatus for removing or replacing vehicle axles or axle casings comprises a pair of wheeled jacks the crutches of which are adapted to interengage with the two ends of the axle or casing. Each jack comprises a screw 31, rotatable by a hand wheel 27 through bevel gears 28, 29; and a non - rotatable nut which is provided with trunnions 33 and engages screw supports 19 mounted on a three-wheeled base 14. The crutches comprise stubs 45 engageable with the ends of casing 49 and provided with slotted lugs 47 which rest on trunnions 33. In a modification (Fig. 2) the stubs 45 are replaced by plates 35 provided with holes 46 which co-operate with studs in the wheel hub (not shown). In another modification (not shown) the screws are rotated by a handle secured to their upper ends. The Specification states that the jacks can be hydraulically actuated.
Patent GB-158826-A (GB)
Title: Improvements in or relating to impulse transmitters
IPC: H04M1/31
Filed: 1921-01-26
Abstract: 158,826. Automatic Telephone Manufacturing Co., Ltd., (Assignees of Richardson, R. G.). Feb. 13, 1920, [Convention date]. Impulse transmitters. - In an automatic telephone system in which the switches have 20, 30, or 40 levels and the same number of contact sets in each level, the dial switch has a plurality of rows of finger holds, every hold in every row being adapted to control the generation of a different number of impulses. The dial switch described is adapted for selectors with 20 levels. The number of impulses transmitted for any number in the first row is a multiple of one tenth of a number of levels in the selectors, in this case 2, and this can be accomplished. by altering the gear ratio. In the case of a twenty level system, this may also be done by using an impulse cam with four blades instead of two. There are exactly two crown teeth a on the large gear-wheel b between each radial set of numbers, but the finger stops for the two rows are set so that in dialling 1 the dog adapted to engage these crown teeth passes over two of them, but in dialling A over one only. Thus dialling on the first row raises the wipers to the second, fourth, &c. levels, and dialling on the second row ;o the first, third &c. levels.