baber/WOPTO huggingface dataset:
Patent GB-391808-A (GB)
Title: Improvements in or relating to knitting mechanisms
IPC: D04B15/00
Filed: 1931-11-03
Abstract: 391,808. Knitting-machines. BRITISH CELANESE, Ltd., 22, Hanover Square, London, KINSELLA, E., PRATT, J. G., and KELSALL, B., c/o British Celanese, Ltd., Spondon, near Derby. Nov. 3, 1931, No. 21765/32. Divided on 391,803. [Class 74 (ii).] To reduce vibration in thread-guide mechanism of warp machines balance mechanism is used comprising weights forming part of brackets 102 and disposed on opposite sides of the pivots 28 to the guides &c. or caused to oscillate in the contrary direction thereto. Where considerations of space prevail the weights are shaped so as to clear adjacent mechanism and two or more systems of balancing weights may be used. To reduce backlash the operating cams may be double acting. Specifications 331,202, [Class 74 (ii), Knitting &c.], 391,803, 391,804, 391,806, 391,807, 391,810, 391,811, and 392,175 are referred to.
Patent GB-1120141-A (GB)
Title: Improvements in air-flow control means
Inventor: FULLALOVE RICHARD
IPC: B65G53/58
Filed: 1965-05-24
Abstract: 1,120,141. Valves. HENRY SIMON Ltd. 11 May, 1966 [24 May, 1965], No. 21820/65. Heading F2V. An automatic air-flow control means comprises a duct 2 from a relatively high pressure source 3 to a relatively low pressure sink 5, a closure member, such as a vane mounted on a spindle 13, arranged to be urged to the open position by the pressure gradient across it, and means, such as a cam 17 and follower 15 first to release the member abruptly at predetermined time intervals so that it is opened by the fluid pressure and then to return it to the closed position. The cam 17 is annular with a sawtooth configuration and is fixed to a part 4 driven by an electric motor and chain drive to traverse an outlet 6 across a circular series of elements 8, the relatively rotatable parts of the duct being provided with seal 9. In a modified construction, the vane is accommodated in a pocket in the duct when in the open position and the air trapped in the pocket cushions its final movement. The duct may be used to supply an air diffusion for a powder fluidizer, an agitator for a powder storage bin or for reverse air-flow cleaning of filters.
Patent GB-216754-A (GB)
Title: Improvements in or relating to fire-sprinkler systems and the like
IPC: A62C35/60
Filed: 1923-08-29
Abstract: 216,754. Clark, R., and Mower, G. A. Aug. 29, 1923. Water supply to distributing systems.-Apparatus for automatically maintaining a predetermined maximum water pressure in sprinkler systems &c. by means of a steamactuated pump comprises improved means for automatically and periodically reducing the pressure for testing purposes, for automatically controlling the pressure at which the steam is supplied to the pump, and for automatically starting the pump on a predetermined fall of pressure and ensuring its continued operation until the maximum pressure is restored. The pump 13, driven from a steam cylinder 11, delivers water under pressure to the supply pipe 14 of the sprinkler system. In order to effect the periodic reduction of pressure, a pipe 21 having an adjustable valve 22 slowly supplies water to a pressure-accumulating stand-pipe C, and when a predetermined head is reached in the pipe C, a diaphragm in a chamber 20 is depressed and opens a valve B against the action of a spring 16, thus allowing water to pass from the pipe 14 through a pipe 15 to waste. At the same time a valve D is opened by means of a lever 26 to evacuate the stand-pipe C at a rate which may be regulated by a valve 28. The speed of the pump is automatically regulated irrespective of variations in the steam boiler pressure by a balanced valve E of known type placed in the steam pipe 12 and controlled by a weighted lever 29 and a diaphragm 31 subjected through a pipe 33 to the pressure on the delivery side of the valve, the weight 34 being adjusted to permit delivery of steam at the lowest piessure for which the pump is designed. On a predetermined fall of pressure in the sprinkler system, a balanced steam supply valve F is opened by a double-acting piston in an hydraulic cylinder 36, the piston rod being connected with the valve stem 38 by a bridle 39. The supply of water to the cylinder 36 is controlled by a pilot valve G actuated by a weighted lever 46 against the action of a diaphragm subjected through a pipe 58 to the pressure in the pipe 14. The upward movement of the bridle 39 permits a supplementary weighted lever 51 to descend and rest upon the main lever 46, which is thus prevented from rising and re-closing the valve F (through the pilot valve G and hydraulic cylinder 36) until the restoration of the maximum pressure in the pipe 14.
Patent GB-1449570-A (GB)
Title: Photoconductive camera tubes
IPC: H01J29/02
Filed: 1974-05-16
Abstract: 1449570 Pick-up tubes ENGLISH ELECTRIC VALVE CO Ltd 7 March 1975 [16 May 1974] 21863/74 Heading H1D In a camera tube having a beam disc electrode 7 between the cathode 3 and the region of influence of the deflection and focussing coils 5 and 6, "ghosting" is reduced by coating that surface of electrode 7 which faces the cathode with a material-e.g. chromium-of lower secondary electron emission characteristic than the material of the electrode.
Patent GB-1275044-A (GB)
Title: Improvements in or relating to the deposition of oxide films
Inventor: WHEELER VICTOR JAMES
IPC: H01M8/12
Filed: 1968-05-08
Abstract: 1275044 Deposition of oxide films UNITED KINGDOM ATOMIC ENERGY AUTHORITY 6 June 1969 [8 May 1968] 21882/68 Heading C1A [Also in Division H1] A metal oxide film is deposited on a substrate by passing a carrier gas over a chloride of the metal at such a temperature as to volatilize the metal chloride, and passing the carrier gas and metal chloride over the substrate in the presence of water, the substrate being maintained at such a temperature that the metal chloride is hydrolysed by the water to deposit the oxide on the substrate. A mixed oxide film may be deposited by passing separate streams of carrier gas over two different metal chlorides (which may be maintained at different temperatures). The water may be derived from an equimolar mixture of CO 2  and H 2  or by passing a non- reactive carrier gas, e.g. argon or nitrogen, through water. If the CO 2 /H 2  mixture is used as a carrier gas the volatilization temperature of the metal chloride should be below that at which hydrolysis occurs. The metal oxide may be one (or more) of zirconium, scandium, tin, indium, manganese, and cobalt. In the example there is described the formation of a thin film of zirconia stabilized with scandia deposited on a nickel substrate (which can then be used as a fuel cell electrolyte) and then a further film of mixed indium-tin oxide is applied to the zirconia film (which can then be used as a fuel cell electrode).
Patent GB-927538-A (GB)
Title: Improvements in or relating to the preparation of solid polymers
Inventor: KELLY THOMAS JOSEPH
IPC: C08J3/00
Filed: 1960-06-22
Abstract: Solid homopolymers of propylene having brittle points of below 20 DEG F. and of molecule weight of from 5,000 to about 300,000 as determined by the intrinsic viscosity method are made by shock cooling polypropylene from a fluid state to a solid state.  By "brittle point" is meant the temperature at which the polymer exhibits brittle failure under specific impact conditions as measured by A.S.T.M. test D746 52T.  By "shock cooling" is meant rapid cooling from a temperature above 130 DEG C. to a temperature below 70 DEG C. in a time not greater than seven minutes.  The shock cooling may be effected by contacting a stream of a solution of the polymer with a cooled metal plate, or by passing a solution through a cooled metal coil, or by passing films or filaments of polypropylene over a cooled chill roll, or by extruding molten polypropylene at a temperature of from 165 DEG  to 185 DEG C. into a cold inert liquid such as water. The polypropylene may be made by polymerizing propylene, in an inert hydrocarbon diluent, at a temperature of from about 130 DEG  to 170 DEG C., in the presence of a catalyst comprising a halide of a transition metal in a lower valency state such as titanium trichloride or dichloride, and an aluminium alkyl, whereby a solution of polypropylene is obtained, filtering the solution, shock-cooling the solution, and recovering the precipitated polypropylene.  The polypropylene may be made into films, fluid containers, or fluid conduits.
Patent GB-926073-A (GB)
Title: Improvements in and relating to carbonaceous compositions
Inventor: JOHNSON PAUL CHARLES
IPC: C04B35/532
Filed: 1961-06-17
Abstract: A carbonaceous composition comprises a mixture of finely divided graphite and/or graphitizable carbonaceous particles and from 20 to 42% by weight thereof of a thermosetting resinous binder which results from the hydrogenation of compounds or mixtures thereof, of the formula:  <FORM:0926073/III/1> where x is 1 or 2 and R is a residue of acetone, mesityloxide diacetone alcohol, methyl ethyl ketone, or acetonylacetone, the hydrogenation of said compounds being to an extent necessary to saturate between 15 and 65% of the double bonds in and out of the furan ring.  The carbonaceous filler has a particle size preferably of mean diameter below 0,058 mm and can consist of from 50-75% by weight of graphite flow and 25-50% by weight of carbon black, but a filler consisting of 90% by weight of milled coke having a particle size of up to 0,074mms can also be used. The binder can be polymerised by heat alone, but 10% by weight of the binder of a polymerization catalyst can also be used.  Diethyl sulphate, p-toluene sulphonic acid, hydrochloric, sulphuric or phosphoric acid are those specified.  The resin is preferably cured at 125 DEG C. for one hour to achieve maximum strength of the joint when the composition is utilized for joining carbon blocks.ALSO:A carbonaceous composition comprises a mixture of finely divided graphite and/or graphitizable carbonaceous particles and/from 20 to 42% by weight thereof of a thermosetting resinous binder.  This binder results from the hydrogenation of compounds, or mixtures thereof, of the formula <FORM:0926073/IV(a)/1> where x is 1 or 2 and R is a residue of acetone, mesityl oxide, diacetone alcohol, methyl ethyl ketone, or acetonyl acetone after the alpha hydrogen atoms of the ketone have split off as water during the reaction with furfuraldehyde.  Said compounds are hydrogenated to an extent necessary to saturate between 15% and 65% of the double bonds in and out of the furan ring.  The binder so produced can be polymerized by heat alone, but preferably 10% by weight of the binder of an acidic polymerization catalyst is used.  Diethyl sulphate, p-toluene sulphonic acid, hydrochloric, sulphuric, or phosphoric acid are those specified.  The resin is preferably cured at 125 DEG C. for one hour when the composition is utilized as a cement for joining carbon blocks.
Patent GB-1042091-A (GB)
Title: Float operated valve
Inventor: JONES GORDON ROBERT
IPC: F16K31/32
Filed: 1964-05-27
Abstract: 1,042,091. Valves. BALMFORTH ENGINEERING Ltd. May 26, 1965 [May 27, 1964], No. 22000/64. Addition to 987,041. Heading F2V. In a float-operated valve for controlling fluid flow into a liquid container, e.g. pumping of fuel into a tank from a tanker, the closure 11 (Figs. 2, 5 and 6, not shown) within a bore transverse to inlet passage 5 comprises discs 12 spaced apart by a segment 14, the outer surface whereof is curved to fit the transverse bore and to effect, in one angular position, closure of passage 5 and the inner surface whereof is curved to define in conjunction with a diametrically opposed vane 15, in another angular position, a fluid flow passageway; the open and closed positions corresponding to abutment of a stop 16, on one disc 12, at the upper and lower extremities respectively of a 90 degrees quadrant gate 18 and the segment 14 rendering the valve out of balance about its axis of rotation whereby, in the " normal " lower position of a forked float arm 26, as determined by an abutment 31 on a slide member 19, an edge 32 of the arm 26 abuts pin 16 to partially displace the valve member which moves to a fully open position and, as the float 24 rises an edge 29<SP>1</SP> of the float arm displaces pin 16 from the fullyopen valve position against the out-of-balance force of weight 14 into a position where the valve is closed by the fluid flow impinging on vane 15. After the valve has closed, the slide 19 may be raised when a hooked end 28 thereof displaces pin 16 to the open position to drain fuel trapped in the supply hose connected at 4. Lifting of the slide also permits lowering of the float arm 26 into an extreme lower position against a stop 28 and facilitates fixing of the valve in threaded socket 3 at a corner of the tank, an arrow on the valve body indicating the position in which the float is clear of the tank walls. Foaming is prevented by a discharge hose 6.
Patent GB-667045-A (GB)
Title: An improved mechanism for handling carton blanks
IPC: B65B43/18
Filed: 1949-08-25
Abstract: 667,045. Feeding sheets. ARNOLD, J. C. (Delamere & Williams Co., Ltd.). Aug. 25, 1949, No. 22149/49. Class 100 (i). [Also in Groups XVII and XXX] Sheet separator.-Means for transferring collapsed cartons from a magazine to opening out' and conveying means includes a plurality of carton seizing means carried by a rotatable column. Each arm of four pairs of arms 11 extending from a hollow vertical shaft 10, rotated either continuously or intermittently, carries pivotally at its outer end a bell crank lever 12 carrying at one end a suction cup 14, yieldable about a pivot 36'. One lever 12 of each pair engages at its other end a stationary cam 16, the other lever 12 of the pair being connected by a bar 30 to said first lever 12 to move therewith. A pair of the suction cups 14 engage a collapsed carton 5' in a magazine 17, a cam 22, loosely mounted on the end of the shaft 10, is then rocked, by lever means 23, 24 actuated by a cam 26 on a rotating shaft 27, to engage the bellcrank 12 to withdraw the carton axially of the magazine. The carton is then carried round to opening means, the cam 16 causing slight angular movement of the carton to avoid obstacles and properly to position the carton for presentation to the opening and conveying means. Means for suitably controlling the application of suction to the suction cups 14 include, Fig. 11, a stationary sleeve 40 in the rotating hollow shaft 10 closed at its upper end and connected at its lower end to a vacuum source. The sleeve has a semi-circular slot 42 cut therein to co-operate with parts 43 formed in the shaft 10 and connected by tubes 44 to the suction cups.
Patent GB-680009-A (GB)
Title: Music lines drawing apparatus
IPC: B43L13/12
Filed: 1949-08-26
Abstract: 680,009. Ruling appliance. MATUSIAK, K. Aug. 22, 1950 [Aug. 26, 1949], No. 22177/49. Class 100 (ii). A ruling appliance for drawing music lines comprises a frame A serving as a handle and carrying exchangeable drawing drums C and an inking roller B revolving with the drum to ink it continuously and evenly. The frame A is formed with a pair of arms, one being extended to form a guide and the other arm being slotted at a<SP>1</SP> to carry the spindle c<SP>3</SP> of the drum C while both arms are slotted at a to carry the spindles of the inking roller B. In use the handle is substantially upright and the spindle c<SP>3</SP> moves upwardly in the slot a' by the pressure on the ruling surface while roller B, constructed of brass or lead and carrying an ink impregnated fabric band, falls in the slots a to contact the drum C. The spindles are retained in the slots by sliding clips D, D', D<SP>2</SP>, and have hand grips b<SP>2</SP>. The drum B is moved axially during rotation by the action of cams b on the sloping sides a' of the handle. The interchangeable drums C are formed with discs of different widths and with their printing edges cut to give various thicknesses of lines. The Provisional Specification describes a drawing drum having spacing washers between the discs to adjust spacing between lines the washers and discs being clamped together by a nut threaded on the drum spindle.
Patent GB-266767-A (GB)
Title: Improvements in glass cutting machines
IPC: C03B33/04
Filed: 1925-09-05
Abstract: 266,767. Culver, Ltd., G., and Turville, A. E. Sept. 5, 1925. Cutting glass.-In a lens-cutting machine, means are provided for varying the angle of the cutting point according to the curvature of the line of cut. The table 13 is rotated from a handle 4 through gearing 3, 6, 12, 13 and is fitted with an ejector 24 actuated from a lever 28. The position of the table is varied from an arm 20 and shaft 18 with slotted head 17 engaging a pin 16 on the table support. A cam 54 is detachably secured to a shaft 5, supporting the gear 3, and bears on its underside similar cam grooves 55, 56. The cutter-arm 49, pivoted on a spring- urged post 50 has a boss 47 in which is journaled the cutter shaft 46. Engaging the groove 55 is a roll 560 in roll holder 57 on a shaft 46, for moving the cutter to form the shape. In the groove 56 run two rollers 58 in roll-holder 60 on a shaft 65 rotatably carried in a plunger 66 free to slide in a boss 67 on a fork 43 and carrying an arm 74 with pin 73 engaging a slider 71 moving within an arm on the shaft 46. The rollers 58 ensure that the cutter is maintained at the correct angle of cut. The clamp is spring controlled and has screw means for height adjustment and separate means for raising it to a predetermined position.
Patent GB-1434623-A (GB)
Title: Device for operating discharge lamps
IPC: H05B41/392
Filed: 1973-05-10
Abstract: 1434623 Supply circuit for discharge lamps MAMIYA KOKI KK 10 May 1973 22424/73 Heading H2H A supply circuit for a discharge lamp 3 comprises a current limiting circuit 5 including a bidirectional switching device 7, and a signal generator 8 which controls the switching device so that the lamp is operated at a lower value of current during a first part of each half-cycle of an A.C. supply and at a higher current during the remaining portion of each half-cycle such that the effective lamp current remains constant over each half-cycle. As shown the switching device is a triac but reverse-parallel thyristors or a saturable reactor may be used. In the initial starting period of the lamp, the lamp impedance is low so that the voltage across the lamp is low. The light output of a lamp or photo emitting diode 19 is therefore low so that the resistance of a photo-sensitive resistor 83 is high. A capacitor 82 charges slowly until the breakdown voltage of a diac 81 is reached whereupon the triac 7 is triggered. A high impedance 6 is connected in parallel with a low impedance 4 thus reducing the impedance in series with the lamp and switching the lamp on. However, the effective lamp current is low due to the retarded firing of the triac. As the vapour pressure of the lamp 3 increases, its impedance and voltage increase thereby increasing the light output of the lamp 91. The resistance 83 therefore decreases and the capacitor 82 charges more quickly thereby triggering the triac earlier in the half-cycle of the supply. A decrease in the lamp current due to the change in the lamp impedance is therefore prevented. Several modifications of the signal generator are described including a circuit, Fig. 19 (not shown), which includes a unijunction transistor the firing of which is controlled to maintain the lamp power constant despite variations in the supply voltage.
Patent GB-456780-A (GB)
Title: Improvements in and relating to the manufacture of artificial stone
IPC: C04B22/14
Filed: 1935-04-13
Abstract: A compound of an oxy acid of sulphur is added to a wet mixture of hydrated lime and an argillaceous, or argillaceous and siliceous material, the mixture is moulded and hardened by steam under pressure.  The argillaceous material may be one which on calcination with lime yields an oxy acid of sulphur, in which case the materials are calcined together and no further addition is necessary.  The artificial stone may be made porous by the addition of a gas-generating agent such as aluminium dust. Examples are given showing the increase of strength imparted by the addition of 0-4 per cent of gypsum to a mix of ground calcined china clay and 20 per cent of ground chalk lime, with 0,1 per cent of aluminium dust. Specification 455,039 is referred to.
Patent GB-365610-A (GB)
Title: Improvements in knitting machines
IPC: D04B7/04
Filed: 1930-07-25
Abstract: 365,610. Knitting-machines. VOLLENWEIDER, G., 75, Avenue de Gennevilliers, Colombes, Seine, France. July 25, 1930, No. 22468. Convention date, July 30, 1929. [Class 74 (ii).] The needle advancing cam of a parallel machine is replaced by levers 17, 18 mounted upon the cam carriage. The levers 17, 18 act upon oscillating levers 8 which engage the butts of jacks 5 arranged below the needles. The .levers 8 are formed in two parts, so that the parts 8a having butts 22 for engagement by the levers 17, 18 can be moved by hand so that the butts 22 may be selectively engaged by the levers 17, 18. The levers 17, 18 are provided with extensions 19a, 19b moving in slots in a cam plate 19 so that both or either lever may be held in operative or inoperative position. The end 27 of the lever part 8a may be in the form of an index finger which may register with an endless band 10 upon which an indication of the pattern is given. The parts of the machine are shown in substantially inverted position in Fig. 2.
Patent GB-305148-A (GB)
Title: Improvements in and relating to nitrocellulose solutions
IPC: C08J3/09
Filed: 1927-08-26
Abstract: 305,148. Jenkins, W. J., and Imperial Chemical Industries, Ltd. Aug. 26, 1927. Paints. - Nitrocellulose solutions, particularly those containing petrol or benzol hydrocarbons or other diluents of low flash-point, and with or without other materials such as resins, plasticizers, e.g. tricresyl phosphate, castor oil, &c., pigments, drying oils such as linseed oil &c., also comprise not more than about 8 per cent of the total bulk of carbon tetrachloride.
Patent GB-321231-A (GB)
Title: Improvements in and connected with governor controlled variable speed gears
IPC: F16H61/662
Filed: 1929-08-10
Abstract: 321,231. Bevan, A. P., and Bevan, H. L. Aug. 10, 1929. Variable-speed gearing comprises a friction cone 20 driven by a roller 5 which is moved axially to adjust the speed in accordance with the load and with the power of the engine by a centrifugal governor 6 constantly driven by the engine shaft 2. The roller or pinion 5 is fast on a spindle 4 which is adapted to slide within the hollow shaft 2 and is formed with a clutch head 16. The governor comprises weights 11 pulled by springs 12 and connected by links 7 to lugs 8 on the shaft 2 and to rollers 8<1>, which work in a grooved collar 9 upon the spindle 4. the shaft 2 being slotted at 2<x>. In the configuration shown. when the engine turns slowly, the spindle 4 is not driven. On speeding up, the governor 6 pulls spindle 4 to the left so as to engage clutch head 16 with a squared recess 17 in the shaft 2. The pinion 5 now turns and is automatically adjusted along the cone 20 so as to drive inclined shaft 21 at a speed suitable to the load and engine speed.