baber/WOPTO huggingface dataset:
Patent GB-977220-A (GB)
Title: Improvements in or relating to the manufacture of oxygenenriched air
IPC: F25J3/04
Filed: 1963-02-26
Abstract: 977,220. Cold separation of air. = SOC. L'AIR LIQUIDE S.A. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. Feb. 26, 1963 [Feb. 27, 1962], No. 7774/63. Heading F4P. In a two-stage air rectification process for the production of an oxygen-rich fraction wherein a first portion of gaseous nitrogen separated in a high-pressure column 9 is condensed therein by heat exchange with a coil 25 traversed by a portion of oxygen-rich liquid withdrawn from the column 9 through ducts 10, 11 and 23 and wherein a second portion of the nitrogen fraction is withdrawn from column 9 through a line 40 and is condensed in an exchanger 33 having a coil 32 traversed by oxygen-rich liquid withdrawn from the base of the high-pressure column 22 through ducts 27, 30 the oxygen-rich liquid withdrawn from the base of column 9 is divided into a first portion which is expanded at a valve 21 into the central level of column 22 and into a second position which is fed through duct 23 and coil 25 to the lower end of column 22 and the oxygen-rich liquid withdrawn from column 22 through line 27 is expanded at a valve 31 before traversing coil 32 and being warmed to ambient temperature in heat exchangers 35, 18, 63 and 61 and being discharged as product through a line 39. Feed compressed air is freed of condensible impurities in conventional reversing exchangers 5A, 5B, cooled by effluent nitrogen discharged from column 22 through a duct 50 assisted by a portion of nitrogen effluent discharged from column 9 through ducts 44, 47, an expansion turbine 48 and a duct 49.
Patent GB-821693-A (GB)
Title: Improvements in or relating to diesel engines and to precombustion chambers therefor
Inventor: BREWER CHARLES DUNSTAN
IPC: F02B19/00
Filed: 1956-03-13
Abstract: 821,693. Precombustion chambers. FORD MOTOR CO. Ltd. Feb. 14, 1957 [March 13, 1956], No. 7837/56. Class 7(3) The transfer passage 3 of a precombustion chamber 1 is formed by a sharp-edged orifice opening into a short passage 4 of greater diameter than the orifice. The chamber 1, which discharges into a main combustion space 2, is insulated by a clearance space 10 and the axis of the orifice 3 may be coaxial with that of chamber 1, or parallel thereto, or inclined thereto.
Patent GB-703217-A (GB)
Title: Improvements in or relating to stereoscopic photographic cameras
IPC: G03B35/10
Filed: 1952-03-27
Abstract: 703,217. Stereoscopic photography; lens turrets. PAILLARD SOC. ANON. March 27, 1952 [April 13, 1951], No. 7851/52. Classes 97(1) and 98(2) To alter the distance of the point of convergence of the objective axes of a twin objective stereoscopic camera having a pair of exposure gates, a turret is revolubly mounted in front of the objectives and is provided with one or more pairs of diametrically disposed optical elements which deviate the beams from the objectives equally towards each other. As shown, a disc 1 formed from a series of apertured plates so as to provide along, diameters three pairs of apertures 6 is rotatably mounted in a housing 5 which is apertured both at front and rear at 9, 10 and is secured to the front wall of a twin objective stereoscopic camera so that any pair of disc apertures 6 may be brought into register with the apertures 9, 10 in front of the camera objectives which are spaced. apart by the interocular distance, one pair of apertures' 6 being clear and the other two pairs carrying prisms 7 which cause the axes of the objectives to converge at different distances. The axes of the two camera objectives themselves are intersected at a point 3 metres from the camera so that since the maximum angle Za of movement of the eyes of the viewer to effect binocular fusion without discomfort is 70', the camera objectives alone can cover a recording range from infinity to 1.5 metres. With prisms 7a, Fig. 6 (not shown), the axes intersect at 1 metre to cover a range from 1.5 metres to 0.75 metre, and with prisms 7b, Fig. 6 (not shown), the axes intersect at 0.60 metre to cover a range from 0.75 metre to 0.50 metre. To select the appropriate aperture 6, the object distance range chosen is set by rotating a scale 13 to bring the chosen distance values against a reference mark 19 when a coloured sector 18 on a disc secured to the scale becomes visible in a recess 16 in the cover 5. A knob 11 is then rotated to bring a mark 17 of the same colour opposite the recess 16, thereby, through gearing 12, 13 rotating the disc 1 which is latched in its selected position by engagement in one of a series of holes spaced at 60 degree intervals around the housing of a ball catch 20 on the disc. The objectives are then focused in the usual manner. Alternatively each prism may be combined with a lens so that on adjusting the disc the camera is in focus on the point of intersection of the camera axes. In modifications the permissible ranges may be represented directly on the knob 11 and the turret set by bring- ing the appropriate indication against a fixed mark, the knob 11 may be fixed to the centre of the disc, and the disc may be moulded in one piece and may carry one or three or more members for deflecting the camera axes.
Patent GB-664931-A (GB)
Title: Improvements in or relating to supply systems for electrified wire fences
IPC: H05C1/02
Filed: 1949-03-23
Abstract: 664,931. Supply systems for electric fences; converting. MALLETT, E. March 23, 1950 [March 23, 1949], No. 7909/49. Classes 38 (ii) and 38 (iv). An electric fence 11 is supplied over a transformer 9, 10 from a battery 1 through contacts 8 of a vibratory interrupter comprising a relay 4, 5, 8, condenser 7 and resistor 6. Upon closure of a main switch 2, the relay winding is energized over condenser 7 and picks up, thereby opening contacts 5, 8. Opening of contacts 8 causes the transformer to apply a high voltage pulse to the fence, the effect being increased by a tuning condenser 12. When the voltage across condenser 7 has built up to a certain value, lack of current in winding 4 causes the relay to drop out. Condenser 7 then discharges through resistor 6 and the cycle repeats. In other arrangements, intended to protect the primary winding of the transformer from excessive current in event of failure of the relay, the relay contacts are normally open.
Patent GB-749176-A (GB)
Title: Improvements relating to jet propulsion apparatus
IPC: F02C7/26
Filed: 1954-03-18
Abstract: 749,176. Gas turbine jet propulsion plant. GENERAL ELECTRIC CO. March 18, 1954 [March 23, 1953], No. 7928/54. Class 110(3) One or more main jet propulsion engines having high energy starting characteristics are started by means of an auxiliary jet propulsion engine having a low energy starting characteristic which feeds pressurized fluid to a starter turbine or turbines releasably connected to the main engines. The plant shown comprises a number of main gas turbine jet propulsion engines B and an auxiliary gas turbine jet propulsion engine A. Engines B are started by air turbines 21 connected thereto by clutches 22. The air turbines are fed from a manifold 30 which is connected to the compressors 13, 23 by conduits 14, 24 containing control valves 25, 26, 27. The engine A is started by an electric motor 11 and brought up to maximum speed with the variable area nozzle 10 closed. The area of the nozzle 10 is then increased and air passed through the conduit 14 and valves 25 to the air turbines 21. The engines B may be started individually. After one engine B has been started, it may be used to supply the manifold 30 by operation of the valve 27. When the engines B have been started, the variable area nozzle 10 and valves 25, 26 and 27 are closed and the engine A used for producing thrust. The conduits 14, 24 may be connected to the turbines or combustion chambers of the engines instead of to the compressor. In a further modification, the conduit 14 is connected to the compressor of the engine A and the conduits 24 to the combustion chambers or turbines of the engine B. The manifold 30 may be used to supply pressure fluid for other purposes, e.g. de-icing. The propulsion nozzle 10 may be of fixed area.
Patent GB-529163-A (GB)
Title: Improvements in automatic selectivity devices for tuned circuits
IPC: H03H7/01
Filed: 1939-03-11
Abstract: 529,163. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and GOODENOUGH, E. F. March 11, 1939, No. 7949. [Class 40 (v)] A filter comprises a pair of tuned circuits coupled by reactance, and is coupled by a valve to an impedance and a reactive coupling is provided between the impedance and that end of the filter remote from the impedance. The invention is applicable to varying the selectivity of a filter by varying the mutual conductance of the valve. The Figure shows filters F1, F2 in which negative mutual inductive coupling is used and feed-back is by a condenser C which produces a 90 degrees phase-shift in the feedback voltage and corrects for the phase-shift produced in the filter. Alternatively the back coupling may be produced by an inductive coupling or by a capacity common to the primary or secondary circuits of the two filters Figs. 7a, 7b (not shown). Negative feed-back to extend the range of control may be provided by an impedance in the cathode lead. The impedance may be a resistance shunted by a tuned circuit to provide a path of low resistance or may consist of two resonant circuits one tuned slightly above and the other below the mid-band frequency. Specifications 387,683 and 463,233 are referred to.
Patent GB-675807-A (GB)
Title: Improved illuminating means for industrial appliances, machines or apparatus
IPC: F21V21/02
Filed: 1950-03-31
Abstract: 675,807. Supporting lamps. SINGER, M. J. March 31, 1950 [July 15, 1949], No. 8157/50. Class 75(iii) A reflector 13 containing a tubular or other electric lamp is pivoted about the common axis of pins 11, 18 provided in a block 16 projecting from the back of the reflector and engaging with recessed parts 5, 4 in the arms of a U-shaped member 17 fixed to a machine to be illuminated. The pin 11 is longitudinally displaceable against the action of a spring 12 to enable the pins to be inserted into the co-operating recesses. The part 4 is insulated from the U-shaped member 17 and is electrically connected to a supply lead 8, whilst the pin 18 is electrically connected by a conductor 9 to a contact bracket 10 secured to but insulated from the reflector 13, and in engagement with one of the lamp terminals. The opposite lamp terminal is supplied through the reflector 13, and the parts 16, 11, 5 and 17 which are in electrical contact, the latter part having a supply lead 7.
Patent GB-738780-A (GB)
Title: Improvements relating to endless scraper conveyors
IPC: B65G19/28
Filed: 1953-03-25
Abstract: 738,780. Scraper conveyers. GEWERKSCHAFT EISENHUTTE WESTFALIA. March 25, 1953 [Aug. 13, 1952], No. 8281/53. Class 78 (1). In a single chain scraper conveyer of the kind having an angular-shaped conveyer channel 17 to which is articulated a guide tube 12 for the return run of the chain carrying the conveying discs 16, the tube during working may either lie against the channel wall 17b as in Fig. 1 or be swung outwardly as in Fig. 2. The tube and channel are connected by bolts 18 on lugs 19 on the tube engaging in holes in lugs 20 on the channel, and may be secured in the relative position shown in Fig. 1 by bolts 21.
Patent GB-1105192-A (GB)
Title: Colorimeter
IPC: G01J3/51
Filed: 1966-02-25
Abstract: 1,105,192. Photo-electric colorimeter. E.I. DU FONT DE NEMOURS & CO. Feb. 25, 1966 [May 3, 1965], No.8432/66. Heading G1A. In a colorimeter for measuring the colour characteristics of light scattered from the surface of material, particularly a moving web of material, one or more photo-electric cells are mounted at one end of a tube, open at the other end to the scattered light and equipped with baffles to prevent spurious light reaching the photo-cell(s), and one or more filters to control the spectral distribution of light reaching the photo-cells. The apparatus is suitable for colorimetry of moving textiles or sheets, including porous materials, and can be used to investigate surface smoothness and control colour coating processes. A filament lamp 10 is mounted in a box 11 and a collimated beam of light filtered of infrared wavelengths, directed at the material 15. Diffusely reflected light is received by the cell or cells through baffled tube 21 which is tilted to avoid specularly reflected light. The amount of light reaching each photo-cell can be adjusted by a screw, and a filter is provided for each cell. When three cells are used each filter corresponds to one of the primary tristimulus distributions. A cell mounted in box 11 monitors the source through an infrared filter and provides the reference path.  The photo-cells (23, 31, 34) can be switched individually in sequence, by a special gang switching arrangement Fig. 6 (not shown) which can be mounted on top of the detector tube 21, into an amplifier-servo circuit Fig. 4 (not shown). The output of the particular cell in circuit is fed in opposition to the output of source-monitor photocell 16, to the amplifier (72) which controls a servomotor (73). The monitor cell output is applied across a slide wire potentiometer (58), the slide position of which is controlled by the servomotor to balance the voltages applied to the amplifier. A pen-recorder plots the position of the slide wire. If the switching arrangement, which utilizes a three-cam system, is in operation, the output of the photo-cells are sequentially applied to the servosystem and a record is obtained alternately for the cells. The switching arrangement can be stopped at any time so that the response of one cell only, is continuously recorded. If a servosystem is not used, the amplifier output can be indicated on a voltmeter. In an alternative arrangement in which only two tristimulus colours are of interest, just two photo-cells and a corresponding two-cam gang switch are used. A modification of the apparatus may be used to compare the colours of the test material with standard colours. These standards may be of the desired colours for a product and the test material is quality controlled by reference to these standards. In a further arrangement, for controlling colour coating, capacitors are used to store the photo-cell outputs Fig. 7 (not shown), before the necessary control is transmitted from the servo to a colour-spraying valve. Alternatively, a continuous delay system involves the use magnetic tape storage.
Patent GB-659115-A (GB)
Title: Improvements in pumping spears for whaling
IPC: F42B30/14
Filed: 1949-03-29
Abstract: 659,115. Whaling spears. TAJBERG, W. O. March 29, 1949, No. 8448. Convention date, Aug. 21, 1948. [Class 119] A spear used for pumping air into a harpooned whale consists of two parts 2, 3, which are detachably connected together whereby the part 3 carrying the spear head 5 may be left in the whale to act as a plug preventing the escape of air therefrom. The upper part 2, in the construction shown, is fitted with a handle 1, and has a branch 8 which is connected by a hose 9 to an air compressor. The lower part 3 has holes 4 for the escape of air into the whale and at its upper end carries a non- return valve. When sufficient air has been delivered into the whale, the two parts 2, 3, are separated by pulling a cord 19 attached to a lever 13, 14, pivoted at 12 to the part 2. This action causes springs 18 which, by their connections to the arm 13 of the lever and pins 17 on the part 3, were previously holding the two parts together to swing past a dead centre position; the springs thus become free from tension and fall free of the pins 17 to enable the tube part 3 to be withdrawn. In a modification an electro-magnet actuates a catch to release a similar lever and in other modifications the parts 2, 3 are interconnected by a screw thread or by a bayonet joint.
Patent GB-415176-A (GB)
Title: Improvements in or relating to anchors
IPC: B63B21/42
Filed: 1933-03-21
Abstract: 415,176. Anchors. TAYLOR, G. I., Farmfield, Huntingdon Road, Cambridge. March 21, 1933, No. 8455. [Class 113 (i).] The fluke 16 is shaped like a double-bladed ploughshare and is welded along the ridge 12. The shank 18 is pivoted to an arm springing from the ridge 12 by a pin 23 which lies in the plane of symmetry of the fluke and aslant the line of pull of the cable.
Patent GB-1446652-A (GB)
Title: Resistance welding
IPC: B23K11/25
Filed: 1974-02-25
Abstract: 1446652 Resistance welding circuits WELDING INSTITUTE 24 Feb 1975 [25 Feb 1974] 8467/74 Heading H2H Method of and apparatus for controlling the duration of a resistance weld comprises monitoring the voltage across the welding electrodes during a weld, detecting and holding the peak voltage to which the monitored voltage rises, comparing the subsequent lower cyclic peaks of the monitored voltage with a voltage which is in the range 2-20% lower than the peak held voltage, and terminating the weld as soon as the subsequent cyclic peaks fall to the lower voltage level. In the apparatus described the voltage present across the electrodes is passed through a steep low-pass filter 1 to eliminate spurious peaks and noise and through a variable gain amplifier 2 to a switch 53 which is set for monitoring either positive or negative peaks. The output from switch 53 is passed to a divider 4 where the monitored voltage is divided by a value representing the peak of the supply voltage to eliminate erroneous operations owing to variations in the supply. The output from divider 4 is passed to a peak detector 5 comprising an operational amplifier 30 with a diode D1 in its feedback path connected to capacitor 15 which holds the peak value of the input to the amplifier. The output is taken via a buffer amplifier 6, which prevents capacitor 15 from discharging, and then is applied to a comparator 9 via a potentiometer which reduces the held peak voltage by an amount preferably the range 10-20%. Incoming voltage values are applied from the output of the divider 4 to the other input of the comparator 9 and a pulse is produced whenever the input exceeds the reduced stored value. A ramp generator 28 is reset by each pulse from the comparator 9 but if one fails to arrive in any one cycle, indicating the peak voltage has fallen the requisite amount, this ramp voltage will rise to activate comparator 31 to stop the weld current via relay 10. A circuit 11-14, responsive to welding voltage cycles may operate a warning lamp 15A via thyristor 15 if greater than a certain number of cycles have been applied to the weld. The circuit 17-24 which is also fed with the welding supply current produces a voltage sample thereof at the peak of the A.C. waveform to be applied to divider 4. A circuit raising to the nth power may be inserted between the devices 4, 5. When a 3-phase supply is used, an RMS waveform is first derived from the monitored electrode waveform and the peak value of this is detected and held. A second peak detector is used and is reset after each cycle, the weld being terminated when the output of the second detector has fallen to the desired proportion of the held value.
Patent GB-415666-A (GB)
Title: Improvements in and relating to massage appliances or the like
IPC: A61H7/00
Filed: 1934-03-17
Abstract: 415,666. Massage appliances. BRIGGS, G., 2A, Blomfield Road, Maida Hill, London. March 17, 1934, No. 8477. [Class 81 (ii).] An appliance for patting massage comprises a rubber or like sucker 10, having a thinned edge 11, mounted on a support 16, preferably comprising a coil spring and extending completely through a handle 21 but alternatively made of rigid material or flat strip spring or rubber tube or rod. The sucker 10 has a flat base 12 and an integral stud 13 and is detachably secured to the support 16 as by turning up the topmost coil thereof for engagement around the stud 13 or by the provision of a springy clip 17, having two diverging cranked limbs 19 with inturned ends 20 which encircle and hold the stud 13 when the clip is thrust into the end of the coil 16. The handle may be of rigid material such as that known under the Registered Trade Mark " Bakelite " or of flexible material such as rubber, in which case the period of vibration of the coil 16 may be varied by varying the position of the fingers on the handle or by thrusting a rigid rod a variable distance into the lower end of the coil.
Patent GB-121695-A (GB)
Title: Improvements in Cabinets for Filing Papers.
Inventor: FISCHER HERMANN
IPC: A47B88/02
Filed: 1918-05-23
Abstract: 121,695. Fischer, H. May 23, 1918. Furniture with mehanically interconnected series of trays.-A filing cabinet of the kind in in which a number of receptacles are so connected together by links that they may be simultaneously displaced relatively to one another in horizontal and vertical directions, is supported on a bracket rotatable on a vertical axis or is horizontally slidable on rails. In the arrangement shown in Fig. 3, the lower tray 1 of a set of trays 1 - - 5 connected by links 7 is supported by a frame 11 pivoted to a clamp 13 secured to a table &c., to which is pivoted a stay 15. The trays 2 and 4 are detachably connected to the links 7 at 9. In the modification shown in Fig. 9, the lowest tray 1 is mounted on tubes 37, 37' slidable on rods 36, 36<1>, and the top tray 5 is connected to the upright support 30 by arms 34 carrying rollers 33 which move in slots 32.
Patent GB-291556-A (GB)
Title: Reversible twisting and stretching blades for dough-mixing machine
IPC: B01F7/00
Filed: 1927-03-29
Abstract: 291,556. Skinnard, S. J. March 29, 1927. Stationary mixers with rotary stirrers.-In a dough-mixing machine the blades comprise members A which are pivoted to radial arms D, and members B, C parallel with the shaft F. The blades rotate about a horizontal axis in a tiltable container the bottom of which is scraped by the members C.
Patent GB-1398592-A (GB)
Title: Probe holder
IPC: F27D3/16
Filed: 1972-02-24
Abstract: 1398592 Sampling; test probe introduction IMPERIAL CHEMICAL INDUSTRIES Ltd 5 Feb 1973 [24 Feb 1972] 8570/72 Heading G1B [Also in Divisions B and F2] A holder for a test probe 1 comprises a first hollow tube 2 flared at one end 3, the flared end being closed, and which has an orifice 4 in its wall at or adjacent the closed end, a housing making a snug-fit around the first hollow tube and comprising a second hollow tube 5 open at both ends and flared at one end 6 to receive the flare of the first tube, and which has an orifice 7 in its wall adapted to be coincident with the orifice in the first tube when the two tubes are fitted together, and a valved outlet 12 in the wall of the second hollow tube at a position away from the flared end. The holder fits in an arm 8 of a vessel 9. The first tube 3 is normally rotated into a position in which orifices 4 and 7 are not coincident. When it is desired to expose the probe 1 to conditions inside the vessel 9 the first tube is rotated to bring the orifices into coincidence for as long as is required; the orifices are then again brought out of coincidence to seal off the probe, effective sealing being checked using a small cock fitted to outlet 12, before removing the probe from inner tube 2.
Patent GB-999599-A (GB)
Title: Apparatus for feeding solid fuel to furnaces
Inventor: WILLIAMS ROBERT
IPC: F23K3/00
Filed: 1964-02-29
Abstract: 999,599. Feeding coal to a furnace. STOOKWERK N.V. Feb. 29, 1964, No. 8599/64. Heading B8S. Coal is fed through pipe 7 and down central pipe 8 to furnace 3 of boiler 2 and its fall down pipe 8 is retarded by air. The air is introduced at 11 into jacket 10 and its path is guided by spiral 14 fixed between tubes 8 and 10 so that it enters pipe 8 through vertical slot 9 to blow the descending fuel against the inner surface of tube 8 to retard it as it falls. Excess air emerges at 12 to blow the fuel into furnace 3.