baber/WOPTO huggingface dataset:
Patent GB-536092-A (GB)
Title: Improvements in or relating to electro-acoustic devices particularly for telephone systems
IPC: H04M1/03
Filed: 1939-08-01
Abstract: 536,092. Telephone sets. STANDARD TELEPHONES & CABLES, Ltd., and CHILDS, P. A. Aug. 1, 1939, No. 22318.. [Class 40 (iv)] [Also in Group XXXV] A micro-telephone comprises an alternating current call generator in combination with an electromagnetic transmitter or receiver. The pole-pieces for the generator are clamped between the pole-faces of the magnet and the pole pieces of the transmitter or receiver. The generator armature comprises a pair of crown wheels 4, 4<SP>1</SP> with staggered teeth, the winding 5 being so arranged that the flux through it is reversed at each rotation through an angle equal to one half of the pitch of the teeth. As shown the crown wheels are of equal diameter arranged back to back with the windingbetween them, but in a modification, Fig. 7 (not shown) the crown wheels are of different diameter, the winding being arranged in the annular gap between the two crown wheels. The generator is driven from a hand crank HC through a stepup gearing, or by a press-lever through a rack and pinion and gearing including a one-way clutch. Change-over contacts disconnect the transmitter or receiver when the magnet is operated.
Patent GB-650635-A (GB)
Title: Improvements relating to road vehicles
IPC: B62D13/04
Filed: 1948-08-24
Abstract: 650,635. Vehicle suspensions. CHAPLIN, W. D., and CRANE, W. F. Aug. 24, 1948, No. 22318. [Class 108(ii)] In a road vehicle having wheels in pairs carried upon common axles, some or all of the axles are supported by fluid pressure cylinders. The invention is particularly applicable to low-loading trucks for heavy loads, having a bogie a each end from which is suspended a low intermediate frame, and enables the load to be lowered to the ground. Fig. 1 shows one end of such a vehicle, in which a bogie 9 is carried by four pairs of wheels 5, 6 each pair being mounted on a common axle 1, 2, 3 or 4 supported at its centre by the plunger 12 of a hydraulic cylinder, Fig. 3. Each pair of wheels is interconnected for steering by rods 16, 17, Fig. 3, and links 14, 15 and spindle 17 to the swivelling member 18. The latter is connected by the triangulated tow bar 20, 21 to the towing vehicle.
Patent GB-795292-A (GB)
Title: Self-regulated closed-cycle diving apparatus
IPC: B63C11/24
Filed: 1956-07-19
Abstract: 795,292. Respiratory apparatus. LE MASSON Y. PIEL, M., and HEAULME, H..July 19, 1956 [July 19, 1955], No. 22396/56. Class 81 (2). Closed cycle self-regulated underwater breathing apparatus comprises a variable capacity defined by a movable wall and supplied with oxygen at a constant rate, means to maintain the volume of the variable capacity constant including means for supplying a neutral make-up gas and a relief valve. A container 4 having an adjustable diaphragm-operated valve supplies oxygen at a constant rate to a body 1 and thence by a carbon dioxide filter 6 to an inhalation tube 10 connected with a mask (not shown). Expired gas flows to the body 1 through an exhalation tube 11 and the filter 6. The body 1 has an orifice 8 sealed by a flexible wall 7 which is protected by a perforate hood 9. As the user descends, the resultant increase in pressure causes the wall 7 to collapse within the body 1 until it bears against a trigger 20 to open a manually closed valve 19 to permit entry of a neutral gas, e.g. nitrogen or helium, into the body 1 from a second container 5. A spring- biased outlet valve 21 opens when the user is ascending and the internal pressure exceeds the ambient pressure. In a modification, Fig. 2, oxygen passes from the container 4 to a chamber 25 by way of a valve 28. The valve 28 its operated by a diaphragm 29 one side of which is exposed to the pressure in a chamber connected with the breathing tubes 10, 11. Variations in this pressure are compensated by a capsule 34 of liquid under pressure which is associated with the diaphragm 29 by a lever 33 so that oxygen is supplied through the valve 28 at a constant rate. Oxygen passes from the chamber 25 to the body 1 through a conduit 24 and thence through the filter 6 to the-inhalation tube 10. As the depth of the user increases, the flexible wall 7 collapses and blocks the conduit 24 thus causing an increase of pressure beneath a second diaphragm 39 so that a second valve 38 opens to allow neutral gas to pass from the container 5 to the chamber 25.
Patent GB-775627-A (GB)
Title: Improvements in or relating to electric switching systems
IPC: H03K17/68
Filed: 1955-08-04
Abstract: 775,627. Switching systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 4, 1955 [Aug. 9, 1954], No. 22405/55. Class 38 (4). [Also in Groups XXXVI and XXXVII] When a relay 24 is in the position shown, the flow of emitter-collector current through each of the transistors 41, 53, 69, is cut off since the base electrodes are biased to a positive potential greater than that of the adjoining electrodes, and no current is passed from three-phase generator 1 to motor 81. Energization of solenoid 22 changes-over contacts 26, 32, 36, so that the base electrodes are biased negatively and each of the transistors allows the passage of saturating current from the generator to the motor when the line to which it is connected is at a positive potential with regard to the other lines. The return path for the current is provided by rectifiers 49, 63, 79, connected in parallel with the transistors. The transistor and rectifier may comprise a unitary semi-conductor structure having four zones 105, 103, 101, 107, of opposite conductivity type wherein the zone 101 is adapted to function as both an emitter for the transistor and as an anode for the rectifier. The zones 103, 105 comprise respectively the base and collector electrodes of the transistor, and the zone 107 acts as the cathode of the rectifier. Another form of the semi-conductor device comprises germanium crystals 203, 207, of N-type conductivity into which are fused indium pellets 201, 205, to form zones of P-type conductivity.
Patent GB-1153342-A (GB)
Title: Improvements in Dye-Sensitized Photographic Emulsions
IPC: G03C1/29
Filed: 1966-05-20
Abstract: 1,153,342. Sensitizing photographic silver halide emulsions. EASTMAN KODAK CO. May 20, 1966 [May 24, 1965], No.22433/66. Heading G2C. [Also in Division C4] A photographic silver halide emulsion is sensitized by a super-sensitizing combination of (1) at least one dye of the formula: - and (2) at least one dye of the formula: wherein d, m, n and p are 0 or 1, R, R', R<SP>5</SP> and R<SP>6</SP> are each alkyl of 1-12 carbon atoms which may be substituted or allyl, R<SP>3</SP> is hydrogen, alkyl of 1-4 carbon atoms, phenyl, tolyl, naphthyl, pyrryl, indolyl, thienyl, pyridyl or anilino, R<SP>2</SP> and R<SP>4</SP> are each hydrogen or R and R<SP>2</SP> and/or R<SP>1</SP> and R<SP>4</SP> represent an ethylene, trimethylene or 1: 3-butylene group, or R<SP>2</SP> and R<SP>3</SP> represent a trimethylene or 1:3 butylene group, or R<SP>2</SP> and R<SP>4</SP> represent an ethylene or o-phenylene group Z<SP>1</SP>, Z<SP>2</SP> and Z<SP>3</SP> each represent the non-metallic atoms completing a 5- or 6-membered heterocyclic nucleus, D represents the atoms completing a 4;5- dihydronaphtho-[1, 2-d] thiazole, a 4:5 dihydronaphto-[1 2-d] selenazole or a 4:5-dihydronaphtho [1, 2-d] oxazole nucleus, L represent the atoms completing a 5- or 6-membered heterocyclic or carbocyclic nucleus and X represents an anion, or where R or R' or both is sulphoalkyl or carboxyalkyl and X is hydroxyl, the internal anhydride of such a dye; the dyes being such that they would satisfy tests for supersensitization described under Procedures 1 and 2 in Specification 498, 290.
Patent GB-336967-A (GB)
Title: Improved control of theatre and the like dimmer systems
IPC: H05B37/02
Filed: 1929-07-22
Abstract: 336,967. Appleford, J. F., and Venreco, Ltd. July 22, 1929. Supplying and controlling .consuming devices. - Theatre and like lighting is controlled by rheostats or dimmers 19 actuated pneumatically, i.e. by air, gas or like elastic fluid. Manually operated valves control the actuating fluid and each dimmer has an independent control valve 7 for presetting its operation. The dimmers are each actuated by a piston operated by fluid under pressure admitted alternately to either end of the cylinder 16. The piston is controlled by a reversing slide valve 7 having a neutral cut-off position and end positions in which one cylinder end is connected to the pressure main 8 and the others to an exhaust main 27, the rapidity of dimming or brightening being determined by the degree of opening. All the dimmers are controlled by a valve 6 in a common pressure main 5 which may be fed from an air compressor 1 automatically controlled by the pressure in an air reservoir 3. The Provisional Specification states that fluid pressure such as that of steam, water or oil may be used.
Patent GB-1394738-A (GB)
Title: Sheet feeder assembly
IPC: B65H3/06
Filed: 1972-05-12
Abstract: 1394738 Feeding sheets ADDRESSOGRAPH MULTIGRAPH CORP 12 May 1972 [13 May 1971] 22512/72 Heading B8R Sheets 16 are separated from the top of a pile 18 by a friction wheel 114 mounted on a feed foot 24 which for the feed of each sheet has imparted thereto in response to a signal from a copying-machine 12 a plurality of small forward and rearward movements by a vibrator solenoid 64, the sheet being free to rotate and roll over the sheet on the rearward stroke and prevented from rotating on the forward stroke, by means of a one-way clutch. The foot 24 is supported on a four bar linkage, and as the pile decreases in height the foot thus drops under gravity without changing its orientation. The pressure of the foot on the pile is controlled by an adjustable counterweight. When the foot is in its forward position, it is slightly angled downwardly and rearwardly so as to be orientated at an angle of 82 degrees to the pile support 20. The movement of the foot is in a direction inclined at an angle of 4 degrees to the feed direction to the machine 12, so that each sheet is laterally registered against a vertical side register plate 76. Excessive vibration of the foot is prevented by a dampener weight 132 connected thereto.
Patent GB-674161-A (GB)
Title: Improvements in photographic emulsions
IPC: G03C7/388
Filed: 1948-08-26
Abstract: 674,161. Colour photography. KODAK, Ltd. Aug. 26, 1948 [Aug. 29, 1947], No. 22555/48. Class 98 (ii). A photographic silver halide emulsion suitable for use in colour photographic material contains a coupler for producing a magenta image and a green-sensitizing dye of one of the formulae wherein R 4 and R 5  each represent an alkyl group containing 1 to 4 carbon atoms, X 1  is an anion, D 2  and D 3  each represent a divalent hydrocarbon radical containing from 1 to 4 carbon atoms, and Z 3  represents the non-metallic atoms necessary to complete a heterocyclic nucleus of the quinoline series. The emulsion may contain a water-insoluble water-permeable material as disclosed in Specification 524,154, or the coupler may be incorporated by the method of Specification 541,589. Numerous high-boiling substantially water - insoluble crystalloidal materials are specified. Numerous magenta couplers are specified, including 1-p-sec.-amylphenyl - 3 - n - amyl - 5 - pyrazolone, 2 - cyanoacetylcoumarone - 5 - (N - y - phenylpropyl) - p - tert. - amylsulphanilide, 1 - # - naphthyl - 3 - amyl - 5 - pyrazolone, 1 - phenyl - 3 - dichloracetamido - 5 - pyrazolone, and 1 - (p - phenoxyphenyl) - 3 - p - - tert. - amyloxybenzamido - 5-pyrazolone. Numerous yellow couplers for the blue-sensitive layer of multilayer colour photographic material are specified, including N - (p - - anisoylacetamidobenzenesulphonyl): N- benzyl - m - toluidide, N - (p - - benzoylacetamidobenzenesulphonyl) : N - n - amyl - p - toluidide, 4: 4<SP>1</SP> - di - (acetoacetamino) - 3: 31 - dimethyldiphenyl, p: p<SP>1</SP> - di - (acetoacetamino) - diphenylmethane, n propyl - p - benzoylacetamidobenzenesulphonate, # - benzoylacetpiperidine, N - (# - benzoylacetyl) - 1: 2: 3: 4 - tetrahydroquinoline, and N - (# - benzoylacetyl) - morpholine. The red-sensitive layer may be as described in Specification 660,012. Numerous colour-developing agents are specified. The three colour-sensitive emulsions may be mixed instead of being coated as layers. Dyes specified are 1<SP>1</SP>: 3-diethyl-5-phenyl-6<SP>1</SP>-methoxythia- 2<SP>1</SP> - cyanine bromide and 11 - ethyl - 3 - # - carboxyethyl - 5 - phenyl - 6<SP>1</SP> - methoxy - thia - 2<SP>1</SP> - cyanine iodide. The emulsion may be of the ordinary surface-image type or of the internalimage type as described in Specification 581,772. Specifications 15055/12, [Class 98 (ii)], and 649,725 also are referred to.
Patent GB-907374-A (GB)
Title: Improvements in or relating to telephone circuit arrangements
IPC: H04M1/68
Filed: 1961-06-22
Abstract: 907,374. Sub-station circuits. TELEFONBAU UND NORMALZEIT G.m.b.H. June 22, 1961 [Nov. 5, 1960], No. 22644/61. Class 40 (4). To reduce the possibility of overhearing by the use of speech voltages induced in the winding of the ringer W, the ringer circuit includes voltage-sensitive resistive means (such as a relay A and its contacts), adapted to present a high resistance to speech voltages and a low resistance to ringing voltages, and frequency-sensitive means (such as a low-pass filter TP) which prevents the application to the voltage-sensitive means of a voltage of a frequency outside the range to which the ringer is responsive. Audible warning of the application to the line of such a voltage having the amplitude of a ringing voltage may be given by a transducer, Fig. 2 (not shown).
Patent GB-677493-A (GB)
Title: Improvements in flavonol derivatives and production thereof
IPC: C07H17/07
Filed: 1950-09-14
Abstract: The invention comprises a mono-tertiary-aminoalkyl ether of a flavonol glucidic compound, particularly the mono-b -diethylaminoethyl ether of rutin and the mono-b -morpholino-ethyl ether of rutin; and also the preparation of such compounds by the reaction of rutin with a tertiary-aminoalkyl halide or a hydrochloride thereof in an aqueous alkaline medium.  The salts of the above compounds, e.g. the hydrochlorides, phosphates and benzoates may be prepared by interaction of the acid and the ether in water or alcohol or by double decomposition between the hydrochloride of the ether and a salt of the selected acid.  Examples are given of the preparation of the two compounds specifically mentioned above.
Patent GB-239060-A (GB)
Title: Improvements in or relating to coal pulverising plants
IPC: B02C23/08
Filed: 1924-09-26
Abstract: 239,060. International Combustion, Ltd., (formerly Vickers & International Combustion Engineering, Ltd.)., and Rosencrants, F. H. Sept. 26, 1924. Continuous discharge apparatus, rotary; air, controlling circulation of:-Coal pulverizing plant of the kind comprising a pulverizing-mill, a cyclone separator, and a fan which exhausts the air from the mill and discharges it into the separator has combined therewith a coal-drier and means whereby a circulation of air is effected through the pulverizing-plant and the drier. The coal-drier may be of the kind described in Specification 234,327, and the air for use therein is drawn by a fan 12 through a conduit 11 connected to the pipe 8 leading from the separator 3 to the mill 1. The air-heater 4 consists of a casing containing a steam-coil 5 and is connected by a conduit 7 to the pipe 8. The exhauster fan 2, connected by pipes 9, 10 to the mill 1 and separator 3 respectively, draws air through the heater 4 and thence by the conduit 7 through the coal in the mill 1.
Patent GB-295283-A (GB)
Title: Improvements in or relating to the fluid treatment of fabrics
IPC: D06B23/00
Filed: 1928-08-07
Abstract: 295,283. British Celanese, Ltd., (Assignees of Platt, H., Shane, N. C., and Dreyfus, C.). Aug. 8, 1927, [Convention date]. Clips. - In boiling, dyeing, delustring, &c. fabrics, the fabric is held by bulldog clips 6 which grip a length of the selvage. Each fold of the plaited fabric may be held by several clips, and each clip may receive several folds. The clips are suspended from parallel rods 5 arranged across the bath. Non-gripping guide-pins 9 or the like facilitate insertion of the fabric.
Patent GB-969090-A (GB)
Title: Improvements in or relating to the production of electrotypes
Inventor: PARKER RONALD ARTHUR
IPC: B41C3/08
Filed: 1962-06-14
Abstract: In the production of a copper shell for an electrotype, an electrically conductive film is first deposited on an electrotype mould, on this film a coating of copper is formed by displacement from a copper-containing solution by the introduction of a dispersion of a metal which is electrochemically more active than copper, and a further coating of copper is electrodeposited over it, preferably at a current density of at least 50 amps./sq. ft. Typically a forme of letterpress and graphic matter is coated with a plastic material such as wax, a phenol formaldehyde resin or a thermoplastic such as polyvinyl chloride which is preheated and cold pressed to form a mould from the forme.  This mould is then coated with a thin conductive film of silver by spraying it simultaneously with solutions of silver nitrate and hydrazine sulphate from a twin orifice gun, spray washing the silver coating immediately with water, and without delay applying a copper coating, e.g. of 0.2 mils thickness, by displacement deposition by spraying simultaneously from a twin orifice gun with a copper sulphate-sulphuric acid solution containing ammonia and a zinc powder dispersion in distilled water. The copper-coated mould is then immersed as cathode in an acid copper sulphate electroplating bath using a copper anode and employing a current density of 120 amps./sq. foot of mould surface to give a copper thickness of 15 mils.  The copper-plated mould is then removed from the bath and the plastic mould is stripped from the silver filmed front surface of the metal shell which is coated on its rear face with tin to assist adhesion of molten lead applied to form a rigid backing. As an alternative a plastic backing may be applied to the shell.
Patent GB-754333-A (GB)
Title: Improvements relating to vacuum pumps
IPC: F04C29/04
Filed: 1953-08-20
Abstract: 754,333. Rotary engines. ALFA-LAVAL CO., Ltd. and CLARK, T. L. Aug. 20, 1954 [Aug 20, 1953; March 8, 1954], Nos. 22981/53 and 6684/54. Class 110(2) The vacuum pump described in Specification 754,347 is provided with a silencer comprising a pipe 1 screwed into the discharge outlet 2 and supporting a metal casing 3 closed by - an annular baffle plate 4. The outer edge of the plate 4 is chamfered to half its depth, the remainder of the periphery being straight knurled so that the crests of the knurling engage the inner face of the casing leaving a ring of apertures between the crests. Thus air exhausted from the pump escapes from the pipe 1 thrcugh openings 5 into the casing 3 and passes thence through the annular outlet formed by the knurling. The air escaping from the casing is directed on to the outer surface of the pump and reduces the working temperature. A sleeve 6 on the pipe holds the plate 4 in position.
Patent GB-1117421-A (GB)
Title: Improvements in or relating to calibrating machines
Inventor: THURSTON BRYAN OLIVER
IPC: G01R1/02
Filed: 1964-06-03
Abstract: 1,117,421. Calibrating the scales of measuring instruments. SANGAMO WESTON Ltd. Sept. 3, 1965 [ June 3, 1964], No. 23021/64. Heading G1U. Apparatus for calibrating the scale of an instrument 10 comprises data storage apparatus (not shown) arranged to supply programmed calibration signals to instrument 10 whereby a pointer 12 is arranged to be deflected sequentially to a series of positions in response to the signals. An electro-optical sensing system is arranged to scan the total movement range of the pointer during the supply of each of the calibration signals and comprises a light source 22 and a collimator 23 projecting a light beam on to a silvered mirror 19 which reflects it on to a light beam reversing prism 24 mounted off-centre of a rotatable disc 17. Disc 17 is mounted on a motor-driven shaft 13 which rotates about an axis 14 coincident with the pivotal axis 11 of pointer 12. Prism 24 reflects the light beam back on to a conically bevelled reflection surface 26 on a slide 25 fixedly mounted behind pointer 12 and adjustable in a circular arc about axis 14. Reflection surface 26 is formed on the perimeter of a semi-circular portion cut from slide 25 and centred on axis 14. The light beam is reflected from surface 26 and passes through a lens 18 and two adjacent slits 28 in disc 17 to energize two circumferentially spaced photo-cells 27 rigidly secured to disc 17. The passage of the rotary light beam across pointer 12 causes interruption of the light and momentary de-energization of the photo-cells in turn and each produces a signal pulse in consequence. The duration of the pulses is determined by the width of the pointer and the speed of the disc 17. The pulses are applied to an electronic circuit 29. The rotary shaft 13 carries a film carriage mechanism 30 which displays a film 31. A signal from electronic circuit 29 actuates a pulse light source in an adjustable carriage 32. The pulse light beam is directed through an adjustable rectangular slit 33 and a lens 34 to produce an image of the slit on the film. The image bears an exact angular relationship to the position of the pointer 12. The data storage apparatus which supplies signals to the instrument 10 is also used to determine the size and shape of each mark reproduced on film 31. Slit 33 may be provided with four shutters each defining one edge of the rectangular slit. Each shutter is controlled by a pivot lever 42 and helical cam 45, Fig. 2 (not shown) which convert linear movement of a solenoid magnet 40 into a rotary movement of a shaft 46 coupled to the shutter.
Patent GB-832461-A (GB)
Title: Hammer crusher
IPC: B02C13/28
Filed: 1958-07-18
Abstract: 832,461. Hammer crushers. UNTERNEHMUNGEN DER EISEN-UND STAHLINDUSTRIE A.G., FUR. July 18, 1958 [July 20, 1957], No. 23189/58. Class 59 In a hammer crusher, the rotor comprises a plurality of discs 2 mounted side by side on a shaft 1, and hammers 5 arranged in axially aligned and circumferentially spaced groups, the hammers being mounted in recesses 3 formed in the discs so as to be rotatable through 360 degrees about axes 4, and the hammers of each group being staggered axially of the rotor in relation to those of adjoining groups. The circular paths of movement of the hammers may be closely adjacent to one another, as shown, spaced slightly apart, Figs. 4 and 5 (not shown), or overlapped slightly, Figs. 6 and 7 (not shown).
Patent GB-302256-A (GB)
Title: Improvements in and relating to electric radiator fires
IPC: F24C7/06
Filed: 1927-09-03
Abstract: 302,256. Ferranti, S. Z. de, and Ferranti, Ltd. Sept. 3, 1927. Addition to 300,565. Electric radiators.- In a radiator according to the parent Specification the reflector comprises substantially flat end plates beach formed with a radius flange t secured to the inner face of the main parabolic portion a of the reflector, preferably by spot welding. The flange is formed by clamping the straight edges of the main and end reflectors together and forcing the end members into their correct position. The reflector has a tubular rim m of triangular cross-section formed by turning back the edges and securing them in position by spot or roller welding. The ends' of the rims on the parts a and b are secured together by acetylene welding or suitably shaped cornerpieces are welded in position. Members p and plates r are welded to the reflector to stiffen it where the feet c and the resilient supports h for the heating element are attached.