baber/WOPTO huggingface dataset:
Patent GB-1367255-A (GB)
Title: Method and apparatus for controlling electrical elements of electro- photographic copying machines
IPC: G03G15/00
Filed: 1972-03-13
Abstract: 1367255 Proximity switch LA CELLOPHANE 13 March 1972 [15 March 1971] 11685/72 Heading G1N Variations in electrical characteristics of a corona charging device of an electro-photographic copying machine due to a sheet of paper inserted therein are used to switch on auxillary components of the machine. A high discharge voltage from generator G is connected across electrodes B, B' each including a pair of parallel conductors F, F or F, F' surrounded by earthed screens E, E'. When a sheet of paper indicated by dashed line is passed into the device between electrodes B, B' the capacitance and hence leak resistance between the two electrodes increases resulting in an increase in potential drop across B, B'. This has the effect of increasing the leakage currents flowing between the electrodes and their respective screens E, E' so that the potential at point A rises to trigger on thyristor T and energize relay L to close switch K and complete the supply circuit to the lamps of the machine. Capacitor C maintains the relay energized during the negative half cycle of the supply when the thyristor is non-conducting.
Patent GB-1429858-A (GB)
Title: Frequency-selective test apparatus for measruing attenuation and other parameters
IPC: H04B3/48
Filed: 1973-03-12
Abstract: 1429858 Measuring the variation of attenuation with frequency SIEMENS AG 12 March 1973 [22 March 1972] 11724/73 Heading G1U In a system for determining the attenuationfrequency characteristic of a circuit under test 3, a reference signal UM having a continuously or step-wise swept frequency f M , is transmitted to a mixer 5 via two parallel paths, the first including the circuit under test 3 and a modulator 4, and the second including an identical modulator 6, the modulation products are passed from the mixer 5, first via a further modulator 9 having a carrier frequency f U  swept synchronously with the input reference frequency f M , and then via a variable gain amplifier 18 to two filters 20 and 21 one of which, 20, is arranged to select from the complex signal resulting from the modulator 9 a component that has passed through the circuit under test 3, and the other of which, 21, is arranged to select a component that has not passed through the circuit under test, so that by controlling the gain of amplifier 18 in such a way that the component selected by filter 21 has a constant amplitude, this being effected by a loop including a rectifier 28, a reference level source 38 and a differential amplifier 29, the component selected by filter 20 from the circuit under test 3 scaled by such a factor by the amplifier 18 that when measured against an absolute scale of voltage, in an analyzer device 24, it provides a meaningful measure of attenuation, even though the amplitude of the reference signal UM and/or the transmission properties of elements feeding amplifier 18 may vary with frequency. An optional additional feature, which produces a system similar to that described in Specification 1428776 is to bring the frequency of the component selected by filter 21 to that of that selected by filter 20, by a further modulator 32, so that the analyzer can also evaluate other circuit parameters such as phase shift.
Patent GB-1433297-A (GB)
Title: Manufacture of thermic lances
IPC: B23K11/06
Filed: 1974-03-16
Abstract: 1433297 Making thermic lances; welding by fusion R J JEFFERY M J JEFFERY K J JEFFERY [trading as RMK ENG CO] 13 Feb 1975 [16 March 1974] 11810/74 Headings B3A, B3R A thermic lance is made by feeding a plurality of wires 11 to a nip between clamping rollers 13, 14, feeding two metal strips 15, 16 to respective means shaping the strips into halftube sections, feeding the sections to the nip to enclose the wires and form a tube about them, and welding together the confronting edges of the sections. In the apparatus shown, the strips are shaped by driven roll pairs 17, 18; 19, 20. The welding is done by two welding heads located between the driven clamp rolls 13, 14 and idler clamp rolls 27, 28, and using continuous welding wire.
Patent GB-707640-A (GB)
Title: Improvements in or relating to frequency converting systems
IPC: H02M5/447
Filed: 1950-05-11
Abstract: 707,640. Control of A.C. motors. SIEMENSSCHUCKERTWERKE AKT.-GES. May 11, 1950 [May 11, 1949], No. 11829/50. Class 38(3) [Also in Group XXXV] A system for changing the frequency, and if desired the number of phases, of the supply to a line R2, S2, T2 from a line R1, S1, T1 comprises a rectifier 2 and an inverter 3 serially connected through their D.C. circuits between the two lines, a synchronous machine 4 whose A.C. windings are supplied from the line R2, S2, T2 through a regulatable transformer 5, and control means 6 for rendering the inverter 3 operative in synchronism with the voltage of line R2, S2, T2, the machine 4 being driven during part of each half-cycle of the latter voltage and generating during other periods thereof. By altering the ratio of transformer 5 the machine 4, when generating, is said to vary the amplitude of the voltage of line R2, S2, T2 which causes the control means 6 to vary the instant of invertor ignition; this corresponds to an instantaneous phase change in line R2, S2, T2 which causes in turn the speed of machine 4 to vary until a new equilibrium is attained at an output frequency f2 different from that previously obtaining. A separate line R3, S3, T3 may be supplied by a generator 7 driven by the machine 4. The rectifier and invertor are Graetz connected and the D.C. circuits include a choke 8. The invention may be employed for the common speed regulation of a number of electric motors, e.g. in the travelling grate drives of boiler installations, or for frequency changing in railway traction supply systems.
Patent GB-227700-A (GB)
Title: Electro-thermic fire alarm
IPC: G08B17/04
Filed: 1924-05-13
Abstract: 227,700. Ameglio, P. May 13,1924. Alarms operated by ex. pansion of gases.-In an electric fire-alarm, of the type in which the expansion of air in a closed chamber 1 deflects a diaphragm in a socket 3, thus actuating, through a toothed quadrant and pinion, a pointer 10 to close an electric circuit, the alarm is given at any predetermined temperature by means of a second pointer 15, which is set at the required graduation and is provided with a contact to co-operate with a contact on the pointer 10. A rod resting on the diaphragm transmits movement to the toothed gearing.
Patent GB-145214-A (GB)
Title: Improvements in or relating to taps, particularly for bathrooms, and the like
IPC: F16K27/12
Filed: 1919-05-12
Abstract: 145,214. Mason, S. G. May 12, 1919. Protecting covers. - A shield or cover a encloses the upper part of the tap and is held in position by the depending lip d' of a gland nut d. A spring washer c is arranged between the members a, d. If desired, the shield member may be secured in any suitable manner to the member d. By detaching the nut d, the shield may be raised to give access to a nut f so that the tap valve can be removed for repairs.
Patent GB-1419048-A (GB)
Title: Data handling system having a plurality of interrelated  character generators
IPC: G06F3/147
Filed: 1974-03-18
Abstract: 1419048 Cathode-ray tube displays BURROUGHS CORP 18 March 1974 [16 April 1973] 11880/74 Heading H4T In a data display system data specifying characters of a first group are supplied to a first character generator the output of which controls a display device (a cathode-ray tube or a Self- Scan panel) whilst data specifying a second group of characters are supplied to a second character generator the output of which also controls the display device. The first character generator is concerned with displaying all of the characters employed in the country in which the system is operated (some of which characters may be common to the machine language of foreign countries) whilst the second character generator is concerned with displaying respective different sets of unique characters employed in each of a number of foreign countries such as shown in Fig. 1, where the U.S.A. is deemed to be the user country. As shown in Fig. 2, all of the data, derived from a computer 20 is supplied via a memory 30 to a storage buffer 40 the output of which is supplied directly to the first character generator 50 and to the second character generator 70 via an encoder 100 and a full adder 80. Generator 50 responds to all of the user country character data including data common to some foreign countries and displays the corresponding characters on device 60. When, however, the codes of the data of the second group of characters, e.g. those listed in Fig. 1, occur, encoder 100 responds and via character generator control 102, arrests the operation of generator 50 and enables the operation of generator 70. Encoder 100 also supplies the character data of the second group as one input to the full adder 80 which receives, as a second input, an identifying code, unique to a particular foreign country, generated by a country selector 90 and changeable by means of "jumper", connections. The output of adder 80 then comprises a signal which accesses the section (Fig. 3, not shown) in character generator 70 in which the selected character data is located and such data then provides the required display on the device 60. A plurality of character generators similar to generator 70 concerned with the display of characters unique to foreign countries additional to those indicated in Fig. 1 may be employed (Fig. 6, not shown). Details of the logic circuits in elements 40, 90, 100 and 102 are described with reference to Figs. 4 and 5 (neither shown) and a schematic arrangement of a Self-Scan panel of the dot-matrix display type is described with reference to Fig. 7 (not shown).
Patent GB-278615-A (GB)
Title: Improvements in mercury vapour rectifiers and like apparatus
IPC: H01J13/14
Filed: 1927-05-06
Abstract: 278,615. General Electric Co., Ltd., and Weintraub, E. May 6, 1927. Low-pressure metallicvapour apparatus.-A part of the envelope of a rectifier is less fragile than the remainder and damping means, such as a grid or baffle, is interposed between the two parts so as to present damage by a sudden movement of mercury during transportation. As shown, the condensation chamber A is formed with a spherical extension C in which mercury collects when the rectifier is inserted, and a perforated flexible metal plate D is mounted in a depression F between the parts. The space between the mereiry and the plate is made as small as possible. The plate may be replaced by a grid with inclined baffles, or by two plates connected by rods and having holes out of alignment.
Patent GB-925870-A (GB)
Title: Improvements in or relating to a process for the electrolytic production of fluorineand apparatus therefor
Inventor: DAVIES ALBERT
IPC: C25B1/24
Filed: 1961-04-05
Abstract: 925,870. Making fluorine electrolytically. IMPERIAL CHEMICAL INDUSTRIES Ltd. March 9, 1962 [April 5, 1961], No. 12214/61. Class 41. Fluorine is made by electrolysis of a fused melt of KF and HF, using as anode a carbon element of which the upper part is electrode carbon of low gas permeability, and preferably not exceeding 0.05, and the lower part is of high permeability, e.g. at least 0.5 up to 1, the junction being below the level of the electrolyte. Preferably the electrolyte is KF and 1.8 to 2.2 of HF and temperature is maintained at 80 ‹ to 110‹ C. The fluorine produced contains 4.6% by vol. of HF, compared with 7 to 10% using a carbon anode of permeability 1 throughout. In a suitable apparatus, a heated jacketed steel cell 1, has mounted therein a carbon anode of low permeability at the upper part 3, and high at the base 2, which is surrounded by a gas impermeable cylinder 5 extending below the junction of the two anode components. A cathode 6 of steel or copper. Fluorine is led off through a pipe 11, and hydrogen through a pipe 12. The electrolyte is added through a pipe 13 to a level above the junction of the two anode elements.
Patent GB-591646-A (GB)
Title: Improvements in or relating to methods of and means for applying adhesive tape around containers
IPC: B65B7/28
Filed: 1945-05-15
Abstract: 591,646. Applying adhesive tape to containers. BADEN, V. L. May 15, 1945, No. 12216. [Class 73] A machine for taping jars, tins &c. is characterized by the fact that after the tape is applied around one container &c. it is secured to a second before being severed between the containers. In the construction shown in Fig. 4, the containers 1 are fed into the machine in succession down an inclined chute 2 on to a platform 5 where the taping occurs and are discharged down a chute 6. With the exception of the first of a series being taped, the containers occupy successively two stations A and B during the process. The containers are fed into the station A by a mechanical loading device 7 operated by means of a cam and lever arrangement 1 actuated by a hand crank 13 and gears. The first container of a series is placed at station B and a portion of the tape 8 is drawn from the roll 9 and brought into contact with the container, and pressed into place by the rollers 21 and the rotating presser 22 which also serves to rotate the container and hence draw out more tape from the roll 9. The presser 22 is actuated by means of a chain connection with the handle B. The cam which operates the loading device, 7, is so arranged that as the taping of the first container nears completion, a second container is pushed into station A. An arcuate form-piece 12 occupies a position opposite the loading device, 7, the tape passing over this, and so, when the second container is pushed into station A it becomes attached to the tape. A further cam and lever arrangement attached to the crank-handle 13 then operates scissor blades 61 and 63 to sever the tape. Further movement of the crankhandle then completes the rotation of the first container, the portion of tape 8a thus being secured, and by means of the cam 20, bellcrank levers 68 and 78 and the lever 72, a spring pressed finger 66 secures the portion of tape 8b to the second container. Meanwhile, the presser 22 is given an axial movement by means of a cam and roller and so is moved out of the path of the container in station B which is pushed by means of the lever 72, in co-operation with levers 73 and 76 and the T- shaped member 85 down the chute 6. The container in station A is then moved by hand or automatically into station B and the process repeated. In a modification, Fig. 8, the container is stationary on a rest B and the tape 9, mounted on a rotatable member 88, is wound round the container, coming into contact with a second container on a rest A before being severed between them.
Patent GB-347475-A (GB)
Title: Gas burner
IPC: F23D14/04
Filed: 1930-04-22
Abstract: 347,475. Atmospheric gas burners. UTTLEY, INGHAM, & CO., Ltd. and GREENWOOD, J., Hebble End, Hebden Bridge, Yorkshire. April 22, 1930, No. 12344. [Class 75 (i).] A burner for gas-heated wash-boilers &c. comprises a pressed or stamped sheet metal chamber a with a preferably sheet metal mixing-tube d fixed thereto and a cast-iron cover b having a grooved or castellated depending ring b<1> resting on the top of the chamber a so as to form lateral burner outlets. The cover b is provided with positioning lugs b<2> and is secured in position as by a screwed rod c. The nipple e is secured by a nut e<1> in a strip d<2> fixed on the tube d and carries a screwed air-regulating disc e<2>, the end of the tube d being slightly flattened so as to prevent the disc e<2> from becoming detached.
Patent GB-188004-A (GB)
Title: Improvements in water tube boilers
IPC: F22B21/12
Filed: 1921-04-29
Abstract: 188,004. Rainey, F. E. April 29, 1921. Water-tube boilers.-A boiler comprises a pair of transverse steam and water drums a, b arranged at different levels and having their steam spaces ccnnected, a pair of lower water drums g, f at the rear and front of the furnace, and an upper water drum j, the steam and water drum a being connected to the water drum j by water-tubes i and to the rear water drum g by downcomers l. The baffles s, o direct the gases in parallel streams through the tubes d, e connecting the drums g, f to the drum b, and then around the drum b and across the tubes i. The water flows from the drum f to the drum j through comparatively large tubes m having constrictions m<1>. The drums f, g are connected by a pipe n fitted with a non-return valve n<1> adapted to open upon excess pressure arising in the rear drum g. The feed-water is first heated in tubes k opening into the drum j. The steam is superheated in tubes p. Specification 114,172 is referred to.
Patent GB-1480021-A (GB)
Title: Bubble-dispersing apparatus
IPC: B01F7/16
Filed: 1975-03-25
Abstract: 1480021 Bubble dispersing apparatus MITSUI MINING & SMELTING CO Ltd 25 March 1975 [25 March 1974 (2)] 12388/75 Headings B1C and B2H A bubble dispersing apparatus, e.g, for separating solids from a fluid, comprises a tank 1 for containing a liquid or a mixture of liquid and solids, a vertical rotary shaft 8 in said tank and connected to a power source, a fixing plate 14 fixed to the lower part of the shaft perpendicular thereto, stirring blades 9 on the lower face of the fixing plate, a plurality of stationary guide blades 6 radially disposed at substantially the same horizontal level and surrounding the stirring blades 9, and a gas supply pipe 15 leading into the tank beneath and coaxial with the centre of rotation of the shaft 8. In operation a gas is fed in through the pipe 15 and collides with the rotating stirring blades 9 and is divided into bubbles as it is thrown out radially. At the intersection between the rotating stirring blades 9 and the stationary guide blades 6 the bubbles are divided into smaller ones by shearing forces, and the bubbles emerge radially from the guide blades and rise in an ascending zone A and are adsorbed onto the surfaces of specific solids to float them to the surface and so separate them from the liquid and other solids. The stationary guide blades are supported from a stand pipe 5 which is sealed off by a member 10 to prevent the escape of gas. In an alternative embodiment (Figs. 5-10, not shown) the apparatus also includes a solidsdispersing device which comprises a similar arrangement of rotating stirring blades (33) and stationary guide blades (32) mounted immediately above the bubble dispersing blades and guides, and a common rotating shaft. Solids are supplied through a pipe (34) onto the top surface of a rotating plate (36) which carries the stirring blades (33). The circulation in the tank caused by the bubble dispersion is confined to the bottom (Arrows C), leaving the rest of the liquid undisturbed except for the ascending bubbles.
Patent GB-640832-A (GB)
Title: Improvements in or relating to the manufacture of interpolymers of styrene with oil-modified alkyd resins
IPC: C08F212/14
Filed: 1948-05-05
Abstract: Interpolymers of styrene, or alkyl or halogen nuclear substituted styrene, with an oil-modified alkyd resin or resins are made by heating with or without superatmospheric pressure a mixture of the components, optionally dissolved in a volatile solvent, e.g. xylol, in the presence of sulphur in an amount of from 1/2 to 5 per cent by weight calculated upon the oil content of the oil modified resin. Specified oil-modified alkyd resins are made by reacting (1) linseed oil fatty acids, glycerol, phthalic anhydride; (2) pentaerythritol, linseed oil fatty acids, phthalic anhydride; (3) castor oil, glycerine, phthalic anhydride; (4) castor oil, rosin, phthalic anhydride, glycerol.  The interpolymers compounded with pigments, solvents, e.g. xylol, and driers, e.g. cobalt and lead naphthenates, may be used as coating or impregnating compositions or printing inks. Specifications 573,809 and 573,835 are referred to.
Patent GB-766982-A (GB)
Title: Improvements in and relating to the testing of elastic materials
Inventor: BRADFIELD GEOFFREY
IPC: G01N29/11
Filed: 1951-05-28
Abstract: 766,982. Testing materials by ultrasonic waves. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 28, 1952 [May 28, 1951], No. 12468/51. Class 118 (2). [Also in Group XXXIX] A flaw-detecting apparatus comprises a barium titanate transducer (see Group XXXIX), in an automatically balanced bridge circuit, Fig. 7, which includes transformer winding TW(I). The transducer TR is balanced by an equivalent circuit including resistor Rm, capacitors Cm, Ce, Cmc and an inductor Lm, the resistor and capacitors Ce, Cmc being adjusted by means of servomotors mRm, mCe, mCmc. A materialtesting operation and two bridge balancing operations are performed cyclically. A time base TB synchronizes a motor M, a gating circuit G2 and a cathoderay tube CRT. An oscillator 01, a gating circuit GA and a gating control circuit PL provide pulses for testing purposes. The pulses are of high or low-frequency according to the condition of contacts a, b and are long or short according to the condition of contacts c, d. The transformer winding TW(II) picks up an out-of-balance signal from the bridge circuit and feeds it to an amplifier Al the output of which is used in accordance with the connections made between the contacts e to p in three different operations in each cycle. Phase-shifting networks PS1, PS2 produce outputs respectively in phase and 90 degrees out of phase with the oscillations from 01. They are connected to phase-sensitive rectifieramplifiers PSRA1, PSRA2 which produce outputs depending in value and in sign on the out-of-balance current and are used to control respectively the servomotors mCe and mCmc, mRm together. In the first operation, short high-frequency pulses are fed to TR. Contacts g, m are connected and the out-of-balance current in winding TW(II) is fed through amplifiers A1, A2 to cathode-ray tube CRT which indicates both the transmitted pulse and the reflections. In the second operation, long pulses of lower frequency are used and capacitor Ce is adjusted. Contact pairs e-#, g-h, l-k and i-p are connected to provide a circuit through A1, G2 to PSRA2 the output of which is used to control servomotor mCe. In the third operation long pulses of high frequency are used and a resistor Rm and capacitor Cmc are adjusted. With contact pairs g-h, l-k, j-o and i-n connected, amplifier A1 is connected through gating circuit G2 to both PSRA1, PSRA2 the outputs of which are used to adjust respectively servomotors mRm, mCmc. The control currents for the servomotors are smoothed by circuits of long time constant such as tcl. Specification 766,983, [Group XXXIX], is referred to.
Patent GB-775229-A (GB)
Title: Improvements in or relating to kinematograph projectors
IPC: G03B1/56
Filed: 1955-04-29
Abstract: 775,229. Kinematograph projectors. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 29, 1955 [May 3, 1954], No. 12483/55. Class 97(1) The movable gate member and the shutter lie between the fixed gate member and the light source, the shutter shaft carrying a member which lies in the path of the movable member to prevent it being opened while the shutter is rotating. In the form shown the movable gate member 1 is pivoted on a spindle 2. The single blade shutter is carried on a shaft 5 which is inclined to the optical axis and carries a conical member 6, flattened at 8 and cooperating with a member 3 projecting from the gate member 1. When the shutter is stationary the flattened portion 8 permits movement of the member 3 as the gate.is opened, movement of the shutter then being prevented so long as the gate remains open. The member. 1 may be coupled to a switch to break the motor circuit when the gate is open. The cutaway portion 8 of the member 6 may be replaced by a spring loaded portion which may be depressed to permit opening 'the gate.