baber/WOPTO huggingface dataset:
Patent GB-1262322-A (GB)
Title: Apparatus for spectroscopic analysis
Inventor: MITCHELL DOUGLAS GRAHAM
IPC: G01N21/64
Filed: 1969-05-22
Abstract: 1,262,322. Atomic fluorescence spectroscopy. D. G. MITCHELL. May 22, 1969 [May 27, 1968; Jan.24, 1969], No.26250/69. Heading G1A. In an apparatus for atomic fluorescence spectroscopic analysis comprising an atom reservoir 1, containing at least two atomic species to be determined, light sources L 1 , L2, L3, for the illumination of the reservoir , and a photocell 2 converting fluorescence radiation from atomic species in the reservoir into electrical signals, only one specific wavelength of fluorescence radiation is received by the photocell at any one time. As shown, a rotating wheel 4 having a number of different filters F 1  -F 3  is located between the reservoir and a photomultiplier 2, each filter selecting a wavelength characteristic of the fluorescence emission of one of the species whose concentration is to be measured. The disc also contains apertures 6 so arranged that when filter F 1  say, is located between the reservoir and the photomultiplier, light from a hollow cathode atomic spectral lamps 5 falls on to a photo-diode 7. The resulting pulse is fed to a switching device 3 whose output controls the lamp power supply unit 8 so as to power light L 1 , the power supply being modulated by a square wave oscillator 9. The light L 1  emits radiation which induces fluorescence emission of the wavelength corresponding to F 1  . Similarly, L2 and L 3  emit radiation when F 2  and F 3 , respectively, are located between the reservoir and the photomultiplier. Thus the photomultiplier output is an A.C. signal which is fed to a pre-amplifier and a gating device controlled by pulses from the photo-diode 2 Fig.2a (not shown). In this way each type of signal is directed to a separate demodulator and read-out device. The demodulators may be replaced by phase-sensitive detectors supplied with a reference signal by the oscillator 9 Fig.2b (not shown). In this latter embodiment, the gating device may be used instead to gate the output of the oscillator to the phase-sensitive detectors Fig.2c (not shown). In a further embodiment Fig.2d (not shown), a single phase-sensitive detector associated with the oscillator is located between the preamplifier and the gating device, To analyse a number of different samples in sequence Fig. (not shown), the wheel contains a large number of different filters, only some of which are used in each determination. The light sources required for a particular determination are set up and a triggering device is arranged in the output of the photo-diode 7 so that a light source is pulsed only when its appropriate filter is in position, this triggering device also controlling the gating device. In all the embodiments the successive switching of light sources may be arranged by having a rotating mirror to direct light from one source on to the sample or by having the sources placed around a rotating wheel fitted with a hole or slot.
Patent GB-616400-A (GB)
Title: Improvements relating to hand saws
IPC: B23D49/12
Filed: 1946-09-04
Abstract: 616,400. Saw frames. HARKNESS, D. Sept. 4, 1946, No. 26521. [Class 61 (ii)] A hack-saw frame is made from one piece of metal rod forming a back 1 and looped handle 2. The ends of the frame 3, 4 are slotted at 3<SP>1</SP>, 41 to receive a hack-saw blade, these ends being bent so that the blade is at an angle to the plane of the frame varying from 10 to 90 degrees. In a modification, the ends of the frame are slotted in the plane of the frame and additional pieces are brazed on having the slots angularly disposed to the plane of the frame.
Patent GB-630661-A (GB)
Title: Improvements in and relating to venetian blinds
IPC: E06B9/308
Filed: 1947-10-01
Abstract: 630,661. Window blinds. GREEN, J. Oct. 1, 1947, No. 26527. Convention date, Nov. 22, 1946. [Class 20(iii)] A venetian window blind wherein the slats may be tilted, raised or lowered by operation of a single cord, comprises a shaft having a cord reel attached to each end and rotatable from one end, and on which is mounted a tubular tilt bar provided with ladder supporting tape arms, means being provided to transmit the rotation from the shaft to the tilt bar. In the form shown, a shaft 7 is supported in brackets 12 attached to the head frame 11 and is provided at each end with a cord reel 16 from which lift cords 17 depend, to be attached to a lift bar 3. To the shaft is attached a pinion 22 which is rotated by a worm 21 attached to a shaft carrying a pulley over which is looped the operating chain and which can be turned in either direction by pulling on one side or the other of this chain, thus raising or lowering the blind. On shaft 7 is mounted a tubular tilt bar 5 having at one end a flange 6 urged by spring 9 into contact with a similar flange 8 fixed to shaft 7, the flanges thus forming a spring-loaded friction clutch. The tilt bar carries tape arms 4 from which the ladder tapes 2 of the blind depend, and its complete rotation in either direction is prevented by one tape arm contacting a stop 15 affixed to the head frame. Thus, assuming the slats 1 to be in the closed position shown in Fig. 2, a pull on one chain first causes the tilt bar to rotate until the end 4a of the tape arm 4 contacts the stop 15. Thereafter the clutch 6, 8 slips and the blind is lifted in the usual way. If now the other chain is pulled, the slats first turn over and then the blind is lowered. The slats, which may be of wood, metal or plastic, are provided at each end with tongues 52 projecting into guide channels 51. The slats are not perforated for the lift cords and so may be easily removed for cleaning purposes.
Patent GB-1279069-A (GB)
Title: Apparatus for charging coal from a coal hopper into a coke oven chamber
IPC: C10B31/04
Filed: 1971-04-19
Abstract: 1279069 Charging coke ovens KOPPERS CO Inc 19 April 1971 [6 May 1970] 26527/71 Heading F4B Apparatus for charging a coke oven chamber comprises a hopper 11 discharging by a rotary disc 15 into a shoot 17 with a butterfly valve 33 feeding a telescopic shoot 21 having a seal 39 and activated by a fluid motor 29, and a pivoted switch 37 above the disc operating the valve 33 through a switch 79 and mechanism 35 so that when there is a layer of coal on said disc the valve is opened and when the coal supply runs out the valve is closed. The disc is driven by a powered shaft 73 through mechanism 71 and the shoot 17 has a clean out cover 19.
Patent GB-1437851-A (GB)
Title: Arrangement for measuring and controlling the concentration of an emulsion
IPC: G01N29/024
Filed: 1974-06-17
Abstract: 1437851 Automatic control of concentration NIPPON KOKAN KK 17 June 1974 [22 June 1973 19 July 1973 30 April 1974 (2) ] 26726/74 Heading G3R The concentration of an emulsion is controlled according to the actual concentration as sensed using ultrasonic waves. The velocity of propagation of the waves in the emulsion is determined and, after compensating this velocity for the sensed emulsion temperature, is used to control the concentration. In the embodiment, a mixture of oil and water for use as a lubricant in a cold rolling mill, flows through a pipe 1. A pulse from an ultrasonic transmitter 4 is received at sensor 5, either directly or after reflection, to trigger a further pulse. The frequency of the pulses is thus dependent upon the wave velocity in the emulsion. After passing through an integrating D-A converter 9, the velocity is compensated for the emulsion temperature, as sensed e.g. by a platinum resistance thermometer 11. The signal at output 13, which is proportional to the concentration of the emulsion, is compared using a Schmitt trigger with desired limits. If these limits are exceeded, either oil or water as appropriate is added for a given time to the emulsion to maintain its concentration within the limits. To standardize the wave path length in the emulsion, the ultrasonic transmitter, receiver and a reflector may be fixed to a frame as Fig. 5 (not shown).
Patent GB-1002276-A (GB)
Title: Improvements in power units for vehicles
IPC: F02D29/02
Filed: 1964-06-29
Abstract: 1,002,276. Regulating. ROBERT BOSCH G.m.b.H. June 29, 1964 [June 29, 1963], No. 26761/64. Heading F1B. [Also in Division F2] In a vehicle transmission including an hydrostatic gear (see Division F2), the gear and engine fuel pump are conjointly controlled by regulators responsive to the gear output and engine speed respectively. In the arrangement shown an internal combustion engine 1 is coupled by a shaft 12 to an hydrostatic gear unit 4, 5 of the swashplate type, the pump output being controlled by a servo unit 6. The gear regulator 7 includes a control valve 18, the loading spring 24 of which influenced by the accelerator pedal 15 and a centrifugal governor 28 connected to the motor output shaft 30. The engine fuel pump 2 is of the electromagnetic type, the stroke of the plunger 93 being controlled by a piston 95 in a cylinder 94 connected by a line 97 to the engine regulator unit 8, the valve 69 of which is controlled by a rod 73 and piston 76 operated by main and auxiliary springs 75, 81 and a centrifugal governor 84 driven by the engine output shaft 12. A mechanical arrangement for operating the fuel pump is also described, Fig. 2 (not shown). Upon moving the pedal 15 the pressure in the gear regulator 7 rises and this is transmitted via engine regulator 8 to pump control cylinder 95 to move pump plunger 93 to the left. At the same time servo piston 41 operates to tilt the pump swash plate 53 to start the gear unit 4, 5. If the speed reaches an excessive value governor 28 operates to reduce the load on valve 18 and the pressure in line 97 and cylinder 94, to reduce the output from fuel pump 2, the setting of the gear unit remaining unaltered. Should the speed fall the load on valve 18 is increased and the pressure in the fuel pump cylinder 94 also rises to increase the pump output.
Patent GB-304174-A (GB)
Title: Improvements in or relating to the reduction of ores
IPC: C21B13/10
Filed: 1927-10-10
Abstract: 304,174. Duffield, F. L. Oct. 10, 1927. Retort furnaces; charging.-In a furnace for the reduction of iron, copper, or nickel ores, the ore mixed with ground coal, and lime if required, is fed by shoots 16 into cylinders 15 and is pushed by rams 14 into cylinders 13 at the bottom of vertical retorts 10 disposed between combustion chambers 11. The ore etc. now rests on the top of rams 12 which force the charge upwards through a one-way cock 1 into the retort 10, the cock being operated by the mechanism operating the rams so that on the downward stroke of the ram the opening in the cock 1 is closed. The ore is reduced in its upward travel through the retort 10 and the reduced ore leaves the latter by ducts 20, 20<1> thence passing through water-cooled passages 5 to a conveyer 21. The ducts 20 are double walled, the inner wall being cooled by a current of air entering through inlets 32, the heated air passing by a pipe 6 into a main 7. The gases evolved in the retort 10 leave the latter by a passage 22 and pass into a pipe 23 from which the gases are introduced through openings 8 into the chambers 11 where they are burnt with air from the main 7, the burning gases passing downwards in the chamber 11 and supplying the necessary heat for the reduction of the ores in the retort 10. The waste gases pass off through exits 30 communicating with a main 31 and thence to a waste-heat recovery plant etc.
Patent GB-1186366-A (GB)
Title: Fluorescent Phosphor Composition
Inventor: CHENOT CHARLES FREDERIC
IPC: C09K11/77
Filed: 1967-06-09
Abstract: 1,186,366. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS Inc. 9 June, 1967, No. 26822/67. Addition to 1,115,290. Heading C4S. A strontium fluoroborate phosphor is of formula 5r 0 . 90  to Sr 0 . 99  F 0 . 50  to F 1 . 00  8 3 . 0  to B 4 . 45  O 5  to O 7 . 45  Eu 0 . 005  to Eu 0 . 05  or Sr 1-x F 0À67 B 4 O 6À67 : Eu x , where x is between 0-005 to 0.05. The europium is preferably in the divalent state. In preparation, strontium nitrate, boric acid, and Eu 2 O 3  are dissolved in water at 95‹ C. and an acetone and ammonium hydroxide mixture added to produce a SrO.3B 2 O 2 .5H 2 O plus europium borate precipitate. The dried precipitate with SrF 2  additions is fired in air at 800‹ C., pulverized and refired at 890‹ C. in 1 to 2% hydrogen in nitrogen for instance. Excitation by a low pressure mercury discharge to produce U.V. emission is mentioned.
Patent GB-1429496-A (GB)
Title: Ribbon lift and feed mechanisms
IPC: B41J32/02
Filed: 1973-06-05
Abstract: 1429496 Ink ribbon mechanisms SCM CORP 5 June 1973 [5 June 1972] 26890/73 Heading B6F A keyboard printer has an ink ribbon vibrator mechanism and an ink ribbon advance mechanism operated by the vibrator mechanism. As shown the ink ribbon 8 is stored in a cartridge 6 with an exposed portion 8a between print head 42 and platen 15. Gear 31 is driven from shaft 34 and its cam 44 causes bail 26 to rock on its shaft 27 and in turn to rock bell crank 18. The bell crank 18 has an ear 39 supporting the cartridge 6. The cartridge 6 is pivotably mounted by studs 4, 5 engaging notches 9 in its casing. Rocking of the crank 18 thus rocks the cartridge 6 and vibrates the ribbon portion 8a. A further crank 21 drives motion from the crank 18 to move its drive pin 38 on a ratchet drive gear on the cartridge. The cartridge 6 includes two gears beneath the drive gear which mesh with two other gears (not shown). The ribbon 8 passes between these two pairs of gears and is thus drawn across the platen 15. As shown the ribbon may be continuous and randomly stored or, Fig. 3 (not shown), there may be a supply spool and a randomly stored used ribbon area.
Patent GB-919036-A (GB)
Title: Derivative of vitamin a aldehyde
IPC: C07D233/02
Filed: 1959-08-07
Abstract: The invention comprises 1,3-diphenyl-2-[2,6 - dimethyl - 8 - (2,2,6 - trimethyl - 1 - cyclohexenyl) - 1,3,5,7 - octatetraenyl]imidazolidine having the formula  <FORM:0919036/IV (b)/1> This compound may be prepared by reacting a vitamin A aldehyde-preferably 2,6-trans, trans vitamin A aldehyde with N,N1-diphenylethylenediamine in an organic solvent such as methanol, ethanol, propanol, butanol, diethyl ether, isopropyl ether, or glycerol.  Alternatively the reactants may be melted together.  A catalyst such as acetic acid may be employed and ambient or elevated temperatures up to the decomposition temperature of the reactants may be employed.  The products may be purified by crystallization or by chromatographic separation.
Patent GB-301359-A (GB)
Title: A composition material
IPC: C04B28/14
Filed: 1927-08-24
Abstract: 301,359. Marks, E. C. R., (Insulex Corporation). Aug. 24, 1927. Divided on 301.344. Porous compositions.-A porous composition is made by forming bubbles in a fluid mixture of water calcined calcium sulphate, and a small quantity of a substance adapted to reinforce the bubble films. The bubbles are preferably formed by carbon dioxide generated in the mass by the action of water on substances such as aluminium sulphate and calcium carbonate. The bubble reinforcing substance is preferably a hydrophobic colloid such as talc, silica, lampblack or gum arabic. An example of a dry mixture adapted to be gauged with water to produce a porous composition comprises 2 lbs. of calcined gypsum, 3 oz. of aluminium sulphate, 1¢ oz. of calcium carbonate, 60 grams or soap and 120 grams of talc. Specification 301,344 is referred to.
Patent GB-1049827-A (GB)
Title: Motor driven goods trolley
IPC: B62D51/00
Filed: 1965-06-25
Abstract: 1,049,827. Brakes. E. WINTER, A. WINTER, E. WAGNER, R. WAGNER, F. KEIM, and L. WAGNER, [trading as FIRMA ERNST WAGNER APPARATEBAU]. June 25, 1965 [July 8, 1964], No. 27058/65. Heading F2E. A motor-driven trolley has brake shoes encircling the drum 3 of the motor 2 and urged towards the drum by springs, a wedge 8 being urged from between the ends of the shoes by a spring 9, to apply the brake, when a lever 14 pivoted to the centre pole 6 is released. The lever is operated by a plate 17, the clearance 21 corresponding to the stopping distance of the trolley. The wedge and wedge bar 11 has a handle 12 to enable the wedge bar to be reengaged with lever 14. The wedge has a double taper, permitting the brake to be applied when the pole is fully raised or fully lowered.
Patent GB-641937-A (GB)
Title: Improvements in or relating to electrical contact brushes and methods for producing them
IPC: H01B1/04
Filed: 1946-09-10
Abstract: Electrical contact brushes are manufactured by incorporating therein a metallic oxide, an oxygenated salt which is decomposed to an oxide, or mixtures thereof, wherein the oxygen is weakly bound to the metal (i.e. the heat of combustion is less than or equal to 70 K.-cals. per gram atom of oxygen); the oxide content being less than 10 per cent of the brush mass.  Suitable additions are oxides of lead, tin, copper, antimony, cadmium, bismuth, molybdenum, tungsten, tellurium, manganese, iron, cobalt, or nickel, or higher oxides of cerium or vanadium; manganites or ferrites of copper, nickel, cobalt, or cadmium, vanadates of the iron group, anti-moniates, stannates, tellurates, selenates, or bismuthates of heavy bivalent metals such as copper, nickel, cobalt or iron; basic, simple, or complex nitrates or nitrites, or hydroxides of cadmium, nickel, or cobalt.  After incorporating one or more of these materials the brushes are heat-treated at a temperature insufficient to burn the carbon or reduce the oxide. For graphite brushes, the graphite is agglomerated (e.g. with an organic binder without subsequent baking, or with an organic binder in a volatile solvent hardened by oxidation or resinification such as stand oil, siccative varnish or a synthetic resin like formaldehyde-cresol) and kneaded with the additions and the brush is compressed and heat treated; the additions may be incorporated before agglomeration.  Alternatively or additionally at least the operative part of the brushes may be impregnated before or after shaping with a concentrated solution of an oxygenated salt adapted to be decomposed to an oxide by heat. Finally the brushes may be given a superficial metallization, or impregnated with dissolved or molten lubricants, e.g. liquid hydrocarbons, paraffin, fatty oils, or mineral oils. Specification 633,073 is referred to.
Patent GB-945291-A (GB)
Title: Improvements in or relating to printing presses
IPC: B65H29/08
Filed: 1962-07-16
Abstract: 945,291. Printing-apparatus. MIEHLEGOSS-DEXTER Inc. July 16, 1962 [Sept. 22, 1961], No. 27169/62. Heading B6C. A printing press of the type having an intermittently rotating impression cylinder 12 and an oscillating delivery arm shaft 20 is provided with a tripping mechanism which is adapted to stop the press if the impression cylinder fails to rotate during an operation which would otherwise print a sheet and comprises a tripping lever 44 movable from a normal non-tripped position to a tripped position to stop operation of the press and an actuating link member 32 which is moved during a printing operation partly by the oscillation of the shaft 20 and partly by the rotation of the impression cylinder 12, said link being arranged to move the lever 44 into the tripped position when the movement of the link is produced by the oscillation of the shaft 20 alone owing to a failure of the impression cylinder 12 to rotate during an operation which would otherwise print a sheet. The cylinder 12 co-operates with the forme 13 of a vertically reciprocable bed 10 and rotates only on the downstroke of the bed; during the upstroke the cylinder is off impression and stationary. Delivery arms 18 mounted on the shaft 20 are provided with grippers 21 which co-operate with the cylinder 12 for gripping and removing a printed sheet from the grippers 22 of the cylinder. An eccentric 23 on the shaft 14 of the cylinder 12 is connected to a bell crank lever 25 by a rod 26 and the other leg of the bell crank lever is connected at 28 to a connecting rod 30 which is pivotally joined at 31 to the link 32. The other end of the link 32 is pivoted at 33 to a member 34 fixed to the shaft 20. A spring 37 is provided to absorb counterclockwise rotation of the bell crank lever if the rod 30 is held against movement. If a sheet is not presented to the cylinder 12 or if a sheet is improperly registered, sheet detecting means trip the cylinder 12 off impression and the cylinder remains stationary. The rod 30 also remains stationary and the end 40 of the link 32 is moved to the right under the action of the shaft 20 only and the end 40 contacts a projection 48 and rocks the trip lever 44 in a clockwise direction. The arcuate end 54 of the lever 44 is thus elevated and raises a yoke 55 which releases friction looking elements 66 and 67 and allows the control shaft 64 to move to a stop position under spring pressure. The press is accordingly stopped. The press may also be stopped or its speed varied by lowering a handle 60 and raising the yolk 55 by means of a rod 57. A manually operable pin 76 is provided to elevate a control bar 42 to a position above the projection 48, Fig. 6 (not shown), so as to render the tripping mechanism inoperative for makeready, inking up or for other preliminary operations. A trip resetting means in the form of a crescent-shaped member 80 is provided in case sheets are fed to the press for regular printing with the control bar 42 still in the elevated triprelease position.
Patent GB-928626-A (GB)
Title: Improvements in and relating to powder metallurgy
IPC: C22C1/04
Filed: 1961-07-28
Abstract: A free flowing powder mixture comprising by weight 83%-95.4% of tungsten, chromium, chromium carbide or molybdenum disilicide, 2%-8% of a water soluble polymerized synthetic gum, 2%-5% water and 0.1%-2% of a water insoluble stearate is compacted to a green density of 30%-65% theoretical and a green strength of 5-500 p.s.i. then cold rolled to at least 80% reduction in thickness and finally sintered in an inert atmosphere such as hydrogen.  The gum specified is polyacrylamide, the stearate is diglycol stearate and 0.1% to 0.2% of a dispensing agent such as lignin sulphonate may also be present. The metal, carbide or disilicide powder should have a particle size of 1.5 to 10 micron and the compaction is effected by extrusion at 50 DEG  C.-60 DEG  C.  After cold rolling the compact may be shaped as desired, the tungsten being sintered at 1700 DEG  C., the chromium at 1500 DEG  C. and the molybdenum disilicide at 1650 DEG  C.