baber/WOPTO huggingface dataset:
Patent GB-1336965-A (GB)
Title: Centrifuge separator
IPC: B04B5/00
Filed: 1972-04-24
Abstract: 1336965 Centrifugal separator UNITED STATES ATOMIC ENERGY COMMISSION 24 April 1972 [17 May 1971] 18895/72 Heading B2P  A centrifugal separator comprises a rotor 10, Figs. 1 and 2, with a spiral channel 12 radiating from its centre in continuously increasing width, means 26 for feeding material, e.g. aerosol particles, to be separated, e.g. according to size, to the channel 12 at the centre of the rotor, means 24 for laminarly flowing a stream of gas through the channel from the centre for carrying the material therethrough, and means 22 for collecting separated particles of the material at different locations along the length of the channel. The material to be separated is fed through a stationary nozzle 58 and a bore 56 in the cover 14 of the rotor to the feeder 26 which is positioned in a recess 36 in the rotor and includes a bore 38, Fig. 4b, aligned with the bore 56 and communicating with the spiral channel 12. Adjacent the feeder in a recess 34 of the rotor is positioned a laminator 24 which includes a channel 28 aligned with the channel 12 and with an air inlet groove 30 in the rotor. Thin strips or plates are spacedly mounted within the channel 28 to divide the latter into a number of passageways to provide laminar flow of the air at the beginning of channel 12. The rotor 10 is supported on a shaft 70 mounted in bearings 72, 74, 76 in a housing 78. Air is sucked by means of a pump 120 through an inlet port 98 in the housing and through bores 86, 88 and annular groove 90 in the shaft 90 and passes from the groove 90 through a bore 54 in the rotor support 16 to the inlet groove 30 of the rotor 10. It then flows through channel 28 into the spiral channel 12 entraining the material introduced through the feeder 26 also by the pump suction. The channel 12 may have a removable metal or paper foil 22 positioned along its outer wall 20 onto which the particles of the material, due to the increasing centrifugal force encountered in the channel 12, are deposited at different locations, the particles with larger terminal settling velocity being deposited first. A filter 10 may be provided at the end of the channel 12 and the clean air passes through a chamber 104 and a series of holes 106 to a recess 102 from which it passes along a central bore 112 and passageways 114 in the shaft 70 to an outlet part 118 connected to the pump 120.
Patent GB-604584-A (GB)
Title: Improvements in or relating to ironing machines
IPC: D06F65/06
Filed: 1945-06-18
Abstract: 604,584. Ironing-machines. HORTON MANUFACTURING CO. June 18, 1945, No. 18946/47. Convention date, June 16, 1944. Divided out of 604,518. [Class 138(ii)] An ironing - machine comprises a pair of relatively-shiftable ironing elements 22, 23, powerdriven mechanism for shifting one of the elements towards and away from the other, control means for this mechanism including a rotatable socket member 140, and a handle 143 which is adapted to rotate the socket member in order to operate the control means and is insertable in the socket member in a number of different angular positions to permit operation by different parts of the operator's body. The invention is described as applied to a machine having the features disclosed in Specification 604,518, and comprising a roll 22, which is carried by a head 21 at one end of a base 20, and a shiftable shoe 23 mounted at the rear of the roll. The shoe 23 is provided with two ears 24, Fig. 2, which are pivotally connected by a pin 25 to an upstanding arm 26 carried by a rock shaft 27 in the base 20. The shaft 27 is adapted to be rocked in order to move the shoe to and from the roll by means of mechanism which is mounted in the head 21 and connected by a curved lever 37 with the shaft 27. This mechanism is controlled by a rock shaft 121, Fig. 1, having a rearwardly-extending arm 135 which is connected by a vertical link 136 to a triangular lever 137 rigid with the rotatable socket member 140 in the lower part of the head 21. The interior of the socket member 140 is of circular tubular section for the major portion of its length, but at its inner end is formed to the shape of a regular polygonal section, preferably hexagonal, for co-operation with the correspondinglyshaped extremity of the hand lever 143. The hand lever can, therefore, be inserted in the socket member in a number of different positions as shown in Fig. 1; it may be arranged vertically or as shown at 145 for operation by the operator's hand, as shown at 146 for operation by the operator's elbow, or as shown at 147 for operation by the operator's knee. A cable 151 may also be connected to the triangular lever 137 to permit operation of the control means by a treadle.
Patent GB-985296-A (GB)
Title: Method of thermally insulating an article against high temperatures and flames
IPC: C08K3/00
Filed: 1961-05-25
Abstract: A method of insulating an article against high temperatures and flames comprises interposing between the article and the source of heat and flames a layer of an insulating composition comprising a refractory filler in an unfoamed matrix of a cured polyurethane polymer.  The composition may be coated, e.g. by trowelling, before curing, over that surface of the article against which the flames would otherwise impinge and is then cured in situ. Alternatively, it may be premoulded and cured and then be bonded into place with additional quantities of the uncured composition as a cement which is then cured in situ.  In examples, liquid prepolymers are prepared from excess toluene diisocyanate and (1) castor oil, (2) and (3) polyester from adipic acid, ethylene glycol and propylene glycol. The refractory material may be chrysolite, crocidolite, asbestos, silicon carbide, alumina, flint quartz, diatomaceous earth, ceramic fibres, glass fibres and fibrous magnesium silicate talc. Cross-linking agents specified are aliphatic alcohols and aminoalcohols such as castor oil, ricinoleyl alcohol, triisopropanolamine. They may be used together with 2,4,6-tri -(dimethylaminomethyl)phenol or N,N, N1,N1 - tetrakis - (2 - hydroxypropyl)ethylene diamine.  In examples (4) to (7) prepolymer is mixed with various refractories and catalysts to give compositions which can be applied by trowelling.
Patent GB-1527477-A (GB)
Title: Method and apparatus for removing a gas cushion from an aluminium production cell
IPC: C25C3/06
Filed: 1977-05-05
Abstract: 1527477 Removing anode gas cushion in electrolytic production of aluminium MASKIN AS K LUND & CO 5 May 1977 18950/77 Heading C7B A gas cushion formed at the anode 7a in a cell 7 for producing Al by electrolysis of Al 2 O 3  dissolved in molten cryolite is blown away by the pressurized exhaust gas 2 of a combustion engine 1 in a movable machine 10, e.g. a diesel engine which is the drive motor in a crust breaker, via a flexible hose 5 and tubular lance 6.
Patent GB-1301186-A (GB)
Title: Improvements to crossbar multiswitches
IPC: H01H67/26
Filed: 1970-04-21
Abstract: 1301186 Cross-bar switches INTERNATIONAL STANDARD ELECTRIC CORP 21 April 1970 [25 April 1969] 18972/70 Heading H1L In a cross-bar switch each selecting finger at a cross-point is displaced in a first direction against its own resilience by displacement of an operate bar, is displaced in a second direction at right angles thereto by displacement of a select bar and on release for movement in the first direction by restoration of said operate bar moves under its own resilience into engagement with a fixed contact to complete a connection. In one form (Fig. 2) the selecting fingers 17, 18, 19 &c. are mounted on a support 4 and are electrically interconnected in rows by printed circuit conductors 5. The free ends of a pair of selecting fingers at a single crosspoint pass through an aperture including four notches 21 to 24. In the both rest and operate positions the fingers are bowed and by their resilience are each pressed into the bottom of a notch 12 shown by finger 19 which is in its rest notch 23. To move finger 19 and the other finger of its pair (not shown but located in rest notch 21) from the rest notches 21 and 23 to the operate notches 22 and 26, in which the fingers engage fixed contacts 26, an operate bar 31 is displaced longitudinally and to the left as shown withdrawing the pairs of selection fingers associated with that bar from the notches in which they are located, a select bar 27 is displaced longitudinally to the right as shown causing only the pair of selection fingers located at the intersection of the displaced operate and select bars to be moved in front of their operate notches, the operate bar is restored allowing the selected pair of select fingers to be guided by the select bar into the operate notches where they firmly engage the contacts 26 due to their resilience. The select bar can now be restored and the connection holds until the operate bar is again displaced. In a modification (Fig. 11) the operate notches have conductive coatings 57 and the outlet conductors 55 are printed circuit paths.
Patent GB-892803-A (GB)
Title: Electric motor control equipment
IPC: G05D3/20
Filed: 1960-05-31
Abstract: 892,803. Controllers. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. May 31, 1960 [June 5, 1959], No. 19203/60. Class 38 (3). A main motor 3 drives a member 5 carrying photo-cells 7-10 and light sources 11-14, a pilot motor 4 driving a slotted disc 6. The photo-cells are connected to relays 15-18 for controlling the magnitude and polarity of the voltage supplied to the main motor. Displacement of the disc 6 for clockwise rotation of the motor 3 removes light from the photocell 7 so that reversing relay 15 is de-energized, and the motor 3 is energized through resistors 24, 25. Relays 17, 16, are then de-energized in sequence whereby the main motor is accelerated until the relays 16, 17 are re-energized to reduce the speed of the motor 3. Finally, relay 18 is energized to disconnect the motor from battery 19. Over-running of the zero position energizes the main motor in the reverse direction and the motor is returned to that position at low speed. Initial displacement of the disc 6 in the opposite direction provides reverse operation of the main motor. A further contact on the relay 18 may control the supply to the pilot motor, in which case the pilot motor is operated only when the main motor is at rest. The member 6 may be provided with supplementary slots for controlling the pilot motor. In another embodiment, D.C. amplifiers are inserted between the photocells and the relays, and in the supply circuit for the motor 3. The relay 15 is replaced by two interlocked relays under the control of relay 18, so allowing initial displacement of the pilot motor to be made through a greater angle, Fig. 4 (not shown).
Patent GB-390519-A (GB)
Title: Manufacture of new cellulose compounds and of artificial materials thereof
IPC: C08B13/02
Filed: 1931-07-04
Abstract: The process of the parent Specification is modified in that cellulose in the presence or absence of a basic substance is treated with one or more reagents of the types specified as suitable for reaction with cellulose xanthate in Specifications 385,979 and 390,518.  The product is xanthated and solutions of the xanthate may be extruded as filaments or films or formed into other artificial materials and treated with coagulating baths or with baths having a coagulating and plasticizing effect.  Other reagents which tend to form ethers or esters of cellulose may be brought into contact with cellulose or alkali cellulose at the same time as the reagents characteristic of the invention, or they may be added to the xanthated product.  In cases where the characteristic reagent is formed from a substance which is itself capable of reacting with cellulose, the preparation of the reagent may be such that an excess of the parent substance is used and the mixed reagent which is obtained is caused to react with cellulose or alkali cellulose.  In examples, alkali cellulose is treated with sulphur and halogen compounds obtained according to Specification 385,980, or with nitrogen and halogen compounds obtained according to Specification 390,516.  The product is xanthated and artificial materials such as threads are obtained as described in the parent Specification.  Other reagents which may be mixed with the reagents characteristic of the invention or which may be mixed with the xanthated products include halogen derivatives of polyhydric alcohols, halogen fatty acids, trithiocarbonic esters, cyclic ethers such as alkylene oxides, the reagents specified in the parent Specification, and the reagents specified in Specifications 357,167 and 357,595.
Patent GB-519671-A (GB)
Title: Improved method and apparatus for disintegrating molten materials
IPC: C10C3/16
Filed: 1938-06-30
Abstract: 519,671. Granulating petroleum coke or tar. ALLEN SHERMAN HOFF CO. June 30. 1938, No. 19434. Convention date, May 17. [Class 82 (ii)] [Also in Group XII] Hot fluid petroleum coke or tar is cooled and disintegrated by delivering jets 6 of water on to a stream of the material flowing downwards from a verticle nozzle 3, the disintegrated product being received in a body of water 7 contained in the closed tank 2. The jets are spaced around and are close to the discharge point of the nozzle. Make-up water is supplied by a pipe 8 and the level is maintained constant by a float-controlled valve and an overflow 15. The mixture of water and disintegrated material may be withdrawn from the tank 7 by pumps 17 and passed to a louvred separator, from which the water is taken to a sump and returned by a second pump to the nozzle 3. Specification 516,594 is referred to.
Patent GB-386318-A (GB)
Title: Improvements in or relating to sheet registering devices for printing machines
IPC: B65H9/18
Filed: 1931-07-06
Abstract: 386,318. Printing-machines. SEITZWERKE GES., Kreuznach, Germany. July 6, 1931, No. 19469. Convention date, June 5. [Class 100 (i).] Sheet-registering devices.-Sheets to be printed are registered accurately on the impression or bed plate of the printing-machine by illuminating the impression space by means of luminous rays, which permit the space on the sheet which is marked or indicated for an impression to be brought into register therewith. For printing on thin or transparent sheets on a bed plate a the rays from a glow lamp d are transmitted through a transparent support c arranged over an aperture b in the plate a. The impression space may be sharply defined by means of an aperture g in a frame f of thin metal which is placed on the bed d. In a modification for dealing with opaque sheets, the impression space may be illuminated from a source of light above the bed a arranged either laterally of the printing-mechanism or close to the printing-surface. A lens may be used to project a beam of light on to the bed so as to define the impression area.
Patent GB-1459668-A (GB)
Title: Method and apparatus for logging the course of a borehole
IPC: E21B47/022
Filed: 1974-05-03
Abstract: 1459668 Logging borehole directions DEUTSCHE TEXACO AG 3 May 1974 19562/74 Heading GIN The co-ordinates of the course of a bore hole are calculated by a computer using signals from a probe which determines continuously the inclination # of the borehole, its heading 0 relative to the magnetic north, i.e. the azimuth angle, and its velocity dl/dt along the borehole. Fig. 1 shows a transducer for measuring sin #, comprising a plumb bob 3 supported at 4 to make contact with a potentiometer winding 1 consisting of parallel turns of wire freely supported about the axis 5 of the probe. The voltage tapped off by the mess 3 is proportional to sin #. Fig. 2 shows a transducer for measuring cos 0, comprising a compass needle 8 movable over a potentiometer winding 6 consisting of parallel turns of wire associated with a plumb bob so that the potentiometer winding is maintained horizontal. The potentiometer 6 has a centre tap 8a at which the compass is pivoted and the voltage tapped off at the North pole of the magnet is proportional to cos #. The azimuth angle # can be directly determined by a rotary potentiometer winding 13 Fig. 3 fixed on the axis of the probe 50 and maintained in a horizontal plane by a weight 14, whereby the North pole 16 of a compass magnet 15 taps off a voltage proportional to 0 or #-180 degrees. The velocity dl/dt of the probe is measured by a known tachogenerator. The measured signals are fed to a computer which calculates the co-ordinates T v , A n1 , A o  of the probe based on three mutually perpendicular axes through the earth's surface end of the borehole comprising the vertical downwards and the North and East directions, using the relationships:
Patent GB-180973-A (GB)
Title: A new or improved process of sterilizing liquids and solid materials or appliances
IPC: C02F1/50
Filed: 1921-07-21
Abstract: 180,973. Hottinger, R. June 1, 1921, [Convention date]. Bandages; materials, special.-Metals, such as silver, deposited in a spongy state from a colloid solution, are employed as germicides. The metal may be deposited on a filter plate or cloth and used to sterilize water or other liquids, or on materials used for making bandages, surgical cloth shoes, wadding, dialyzing membranes, &c., which are thus rendered permanently sterile. The spongy deposit is obtained by reducing a solution of a silver salt, for example with formaldehyde and alkali, at a fairly rapid rate and by repeated deposition on the same surface. Specifications 13702/09, [Class 46, Filtering &c.], 29049/12, and 157,280, [Class 46, Filtering &c.], are referred to.
Patent GB-183457-A (GB)
Title: Device for the production of concrete constructional elements
IPC: B28B7/24
Filed: 1922-07-18
Abstract: 183,457. Preuss, E. V. July 19, 1921, [Convention date]. Presses with fixed mould tables; moulds. -A machine for moulding concrete blocks comprises a mould having two opposite walls 17, partitions 16, and a base 18 secured together so as to form a drawer which slides in a framework consisting of sides 13 connected by a base 20. The partitions slide through slots .in the front wall 14, Fig. 6, of the framework and engage by means of corresponding projections and recesses with the rear wall 19, attached to the base 20 by a spring 21. The wall 19 and the drawer are held in position 'against the opposing action of springs 23 by bolts 22 secured by cam-shaped catches 25 which engage a plate 26 connecting the partitions and sides 16, 17. The sides 17 are extended to the upper level of the framework by movable angle irons 32 which are released when the drawer is removed and remain with the moulded article when the latter is ejected by inverting the mould. A rammer 33 having projections 35 for distributing the material is provided with ribs 34 corresponding to the partitions 16 and is guided by a member 36 attached by projections 37 and springs 39 to the framework.
Patent GB-822160-A (GB)
Title: Improvements in or relating to the manufacture of luminescent screens for cathode ray tubes
Inventor: BOWTELL JAMES NORMAN
IPC: H01J9/22
Filed: 1955-07-07
Abstract: A process for forming a thin metallic film on a C.R.T luminescent screen includes the step of forming a nitrocellulose film, upon the surface of an aqueous liquid on a layer of luminescent powder, from a solution consisting of nitrocellulose, a plasticiser and a spreader liquid in a solvent composed of one or more acetates of aliphatic alcohols not higher than amyl alcohol, the nitrocellulose being of specified low viscosity grade and specified high nitration grade. The nitrocellulose film can be formed on water, and the plasticiser can be an alcohol phthalate such as dioctyl phthalate in specified proportions.  The spreader liquid can consist of one or more lower aliphatic alcohols such as a mixture of methyl and ethyl alcohols with or without butyl alcohol in specified concentrations.  The concentrations of the materials in the solution are such as to give from 0.005 to 0.015 mg. of nitrocellulose per sq. cm. of surface to be covered.  The solution is introduced on to, but not below, the surface of the aqueous liquid by means of a pipette which can be of the kind described in Specification 800,346, [Group XXIX].  The solvent of the nitrocellulose is allowed to evaporate, the aqueous liquid is removed so that a film of nitrocellulose is deposited upon the luminescent powder, a thin layer of metal, e.g. aluminium, is applied to the nitrocellulose film and the nitrocellulose is then removed by heating.ALSO:A process of forming a nitrocellulose film upon an aqueous liquid on the luminescent screen of a cathode-ray tube utilizes a solution consisting of nitrocellulose, a plasticiser and a spreader liquid in a solvent composed of one or more acetates of aliphatic alcohols not higher than amyl alcohol, the nitrocellulose being of specified low viscosity grade and of specified high nitration grade.  The plasticiser may be a phthalate such as dioctyl phthalate in specified proportions.  The spreader liquid may consist of one or more lower aliphatic alcohols, such as a mixture of methyl and ethyl alcohols, with or without butyl alcohol, in specified concentrations.  The concentrations of the materials in the solution are such as to give from 0.005 to 0.015 mg. of nitrocellulose per sq. cm. of surface to be treated.  The solution is introduced on to, but not below, the surface of the aqueous liquid by means of a pipette, as described in Specification 800,346, [Group XXIX].  The solvent is allowed to evaporate and the aqueous liquid is removed.
Patent GB-1195925-A (GB)
Title: Improvements relating to Metal Melting Furnaces.
Inventor: SIEGWART RODERICK IVAN
IPC: F27B1/26
Filed: 1968-04-25
Abstract: 1,195,925. Controlling metal-melting furnaces; controlling burners. NORTH THAMES GAS BOARD. 10 April, 1969 [25 April, 1968], No. 19729/68. Headings F4B and F4T. [Also in Division G3] In a shaft furnace wherein an air blast gas burner 7 is used for melting ingots 44, e.g. for die-casting purposes, the operation (heat output) of the burner 7 is automatically controlled in dependence of the level of molten metal in a receiving receptacle 9, sensed by a probe in the form of a tube 33 having an open end 34. The tube is connected by an air weep line 38 to air supply pipe 24 and fan 23 and by a pipe 39 to a pressure-sensitive switch 40. In operation, when the level of the molten metal closes the open end 34 the back pressure produced opens the pressure switch 40 which in turn acts through solenoid 42 and diaphragm 31a to close a pneumatic pressure-operated valve 31 so greatly reducing the flow of combustion air passing through the injector 30. This reduced flow of air causes the flow of gas from the zero governor 28 and valve 29 to be reduced proportionally; the burner then merely serves to keep the ingots hot without causing them to melt. In an alternative arrangement the burner is completely shut down. On removal of molten metal from the reservoir the burner once again operates to melt ingots. The temperature of the molten metal in the reservoir 9, heated by a burner 13, is sensed by a probe 35 connected to an indicator 37. Adjustment of this temperature is made manually by means of an adjustment valve 26 located in the air supply line 25. Alternatively, the molten metal temperature may be automatically controlled.  In an alternative embodiment the levelsensitive element is in the form of an electrical probe which forms part of an electrical control circuit which is completed when the molten metal rises into contact with it.