baber/WOPTO huggingface dataset:
Patent GB-394137-A (GB)
Title: Improvements in connection with the extrusion of metals
IPC: B21C33/00
Filed: 1932-06-23
Abstract: 394,137. Squirting. BEAVER, C. J., Bell Place, Stamford Road, FAIRFIELD, T. J., Newlands, Talbot Road, both in Bowdon, Cheshire, and GLOVER & CO., Ltd., W. T., Trafford Park, Manchester. June 23, 1932, No. 17734. [Class 83 (iv).] The residue 4 of the charge in an extrusion press is heated before introduction of a fresh charge, by means of a blow pipe or jet 36 mounted on a hinge support 22 so that it can be swung into or out of the container 2, a bracket 35 supporting it in the inoperative position. The jet 6 is supplied through a pipe 7 with coal gas or other fuel and oxygen, conveyed thereto through pipes 16, 13 and 17, 15 and controlled by valves and regulators supported by brackets 31, 32, 34. Exhaust pipes 8 are swung into the container with the fuel pipes and remove the products of combustion. The movement of the pipes into the container is adapted to control valves for one or more of the pipes, in the form shown a valve at the hinge 22 in the exhaust pipe being opened when the pipes are moved to operative position. The apparatus may be controlled partly or wholly automatically by means which may include a timing device, electromagnetically controlled balance weights for moving the pipes when the container is returned, and an automatic control for the flame.
Patent GB-1079852-A (GB)
Title: Improvements relating to circuit arrangements for frequency translation of alternating current signals
Inventor: GALPIN ROBERT KEITH PORTWAY
IPC: H03C1/60
Filed: 1963-05-06
Abstract: 1,079,852. Semi-conductor modulators and demodulators. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 22, 1964 [May 6, 1963], No. 17809/63. Headings H3R and H3T. [Also in Division H1] A single sideband modulator or demodulator in which frequency translation by the phase shift method is provided by a pair of Hall plates mounted in a unitary magnetic structure (see Division H1). Modulation.-Phase change circuits PS1 and PS2, Fig. 1, to which a modulating signal S(f 1 -f n ) is supplied, provide output signals S1, S2, in phase quadrature, for application to the magnetic circuits of the two Hall plates included in device D and a carrier signal f 0  is applied directly to one current terminal of the first plate and via a 90 degrees phase change circuit PC to one current terminal of the second plate. The Hall voltage output terminal V1, V2 of each plate supplies upper and lower sideband signals phased such that when either added or subtracted in unit SPM one or other sideband is cancelled. In a second arrangement, Fig. 10, the quadrature modulating signals are applied to one current terminal of each plate and the carrier signal is applied in common to both magnetic circuits. The Hall output voltages undergo further phase shift in units PS3 and PS4 before combination in unit SPM. Demodulation.-A received upper single sideband signal Su plus a possible interfering signal Sl in the lower sideband position are applied directly to the magnetic circuits of both Hall plates in the structure D and a carrier signal f 0  is applied directly to a current terminal of the first plate and via a 90 degrees phase shift circuit to a current terminal of the second plate. The Hall output voltages on terminals V1, V2 are filtered F to remove the high frequency components and phase shifted in circuits PS1 and PS2 such that on combination in circuit SPM the signals from the interfering sideband position cancel.
Patent GB-831971-A (GB)
Title: Improvements in or relating to valves for fuel tanks of aircraft
IPC: F16K24/00
Filed: 1956-06-08
Abstract: 831,971. Venting apparatus. BLACKBURN GROUP Ltd., [formerly BLACKBURN & GENERAL AIRCRAFT Ltd.]., GADD, R.C.S., and WOODWARD, S.C. June 8, 1956 No. 17835/56. Class 21. [Also in Group XXIX] A gravity operated valve for an aircraft fuel tank comprises an elongated housing 1 of circular cross-section, open at its ends 2, 3 and having a centrally disposed branch tube 4 opening therein and enlarged diameter portions 1<SP>1</SP> and 1<SP>2</SP> intermediate the branch tube and the ends of the housing and a slidably mounted gravity operated closure member 5 with enlarged ends 6, 7 for sealing engagement with the outer ends of the enlarged diameter portions. The member 5 has sealing rings 8, 9 secured by end pieces 10, 11 respectively, held in position by threaded rods 12, 13 which slide freely in the bosses 14 of spiders 15. The valve is mounted above the normal maximum fuel level with its major axis extending in the line of flight. The branch tube 4 extends through the top of the tank such that air and excess fuel may vent through the housing during tank filling and air or inert gas to pressurise the fuel may enter therethrough. Should the fuel be displaced during aircraft manoeuvres or during accelerated take-offs or retarded landings, the fuel is prevented from escaping by the closing of one of the ports by the slidable valve member.
Patent GB-406550-A (GB)
Title: Improvements in or relating to projectors comprising automatic picture changing means
IPC: G03B23/04
Filed: 1933-06-23
Abstract: 406,550. Changing signs. OSCHWALD, A., 67, Stampfenbachstrasse, Zurich, Switzerland. June 23, 1933, No. 17986. Convention date, July 20, 1932. Addition to 384,255. [Class 3 (i).] Optical - projection apparatus.-The transparency changing device of the parent Specification is modified by mounting the lens system at a distance from the screen which does not alter when transparencies are added to or taken away from the magazine, and by substituting a more silent form of transparency changing mechanism. The magazines 2, 3 comprise angle irons 23 and flat bars 24 suspended from a traverse 21, and are closed at the bottom by a platform 27 threaded over the members 23, 24 and engaging by a mechanism-supporting web 29 upright columns 20 to which it can be clamped at any required position. The platform 27 carries a sliding device 35 actuated by a stud 36 co-operating with a cam 34 on a continuously rotating wheel 33, an adjustable abutment 39 on the slide 35 serving to push a line of transparencies along the platform 27 under a guard 53 and so transfer one from the bottom of column 3 to the bottom of column 2. In order to raise the transparencies in column 2 to allow an oncoming transparency to pass thereunder, an arm 44 pivoted at 45 to the web 29 is raised once for each complete reciprocation of the slide 35 by a cam 42 on the shaft 32 of the wheel 33. Fingers 47 on the arm 44 extend through holes in the platform 27 to push against the bottom transparency of column 2 and form the gap. The transparencies are transferred from the top of column 2 to the top of column 3, across the light beam, by a spring-retracted lever 49 mounted on a spindle 48 oscillated by a pin 52 on the wheel 33 striking an eccentric bar 51 fixed on the spindle 48 parallel thereto. An aperture 22 in the traverse 21 accommodates an inclined reflector to deflect the beam from the light source to the lens L.
Patent GB-742145-A (GB)
Title: New hydrous calcium silicate
Inventor: KALOUSEK GEORGE LA WRENCE
IPC: C04B28/20
Filed: 1953-06-29
Abstract: A hydrous calcium silicate is characterized by the formula 4 CaO.5 SiO2 5H2O, a thin platy crystal habit, and an X-ray diffraction pattern at d=11.2 and 2.95A (the complete pattern is given), "d" being the distance between planes of atoms in said crystals.  It also shows a break in the heating curve at 260\sB10 DEG C.  The material may be in the form of discrete crystals having a surface area of at least 50 sq. m./gm., or as an integrated porous or cellular structure in which the volume of the voids may be greater or less than that of the solids, which is suitable for insulating materials for temperatures above 100 DEG F or building materials.  The latter form may be modified by the presence of finely divided fibres-e.g. of asbestos (such as chrysotile or amosite) or cellulose-or of 5CaO.5 SiO2H2O crystals structurally integrated therewith. The calcium silicate may be prepared by reacting in aqueous dispersion at an elevated temperature preferably at up to 208 DEG C and the corresponding pressure of 240 p.s.i. abs., silica (anhydrous or hydrated, 95 per cent of which should pass a 325 mesh (Tyler) sieve) and finely divided lime or compounds of lime and silica capable of further reaction with either lime or silica, the initial molecular proportions of lime to silica being 0.8 : 1 to 1 : 1 and the water to solids ratio being not in excess of 26 : 1, and for the discrete particle form, greater than 7 : 1 by volume.  The water in this initial slurry is saturated with respect to lime.  The silica may be in the form of quartz, tripoli or silicic acid; the lime component is preferably lime freshly slaked with hot water; suitable lime-silica compounds are b  or g  2CaO.SiO2, 3CaO.SiO2, Portland cement and blast furnace slags.  The temperatures specifically mentioned lie above 125 DEG C, and temperatures above 203 DEG C may be used.  When preparing discrete particles, the mixture should be stirred, but uniform distribution is obtained if desired in producing the integrated form by the addition of the above-mentioned fibres, having cross-sectional areas of the order of 0.1-3 microns.  In a described procedure, an asbestos slurry is added to a slurry of slaked lime, and quartz flour added to the mixture, which is then placed in an autoclave preferably having a water-saturated or -supersaturated atmosphere in an open or closed container, e.g. in the case of an integrated product, in pans of the appropriate shape.  After the end of the reaction period, the autoclave is cooled and opened and the product dried.  If desired, however, water may be allowed to evaporate during the reaction.  Discrete particles may be dried at 150 DEG C, or washed successively with acetone and ether and dried at 100 DEG C.  An integrated product may be dried at 300-350 DEG C.  In the production of the mixed silicate product, 2CaO.SiO2n H2O is stated to be formed as an intermediate.  Specifications 646,820, 658,427, [Group V], and 702,057 are referred to.
Patent GB-318329-A (GB)
Title: Improvements in and relating to expansion joints for pipe lines
IPC: F16L27/12
Filed: 1928-06-21
Abstract: 318,329. English Electric Co., Ltd., and Seewer, P. W. June 21, 1928. Stuffing-box joints. - In an expansion joint between two pipes a, d, fluidtightness is secured by packing e which is located in a socket member b, preferably shrunk or welded onto the pipe a and having a reduced outer end c, and is compressed against the surface of the pipe d through a ring f, which is actuated positively by screws k, Fig. 1, or springs o, Fig. 2, and also by the internal fluid pressure. Modified means for compressing the packing and for attaching the socket b to the pipe a are described.
Patent GB-297901-A (GB)
Title: Improvements in and relating to the treatment of tea leaf
IPC: F26B9/06
Filed: 1927-07-07
Abstract: 297,901. Carrier Engineering Co., Ltd., and Robertson, K. J. R. July 7, 1927. Limping ; fermenting.-Tea leaf is conditioned or fermented by moving it in superimposel layers with intervening spaces through a body of air of a predetermined temperature and humidity moving continually across the surface of the leaf in a direction transverse to its movement so that all the leaf is treated with air of the desired condition. In the method described, the leaf is disposed loosely on trays 6 carried with air spaces between, on trucks 4 moved by gravity or otherwise through the treatment chamber 1. One wall of the chamber 1 has a series of entry flues 7, to which the air is fed from a fan 9 under pressure, and with a series of air extraction ducts 8. Air is supplied to fan 9 through a humidifier 16 having a water spray, water circulation being obtained by a pump 17. Air is fed to the humidifier from a conduit 13 connected to the outside atmosphere, or from a conduit 14 connected to inside the factory and having a steam or other heater 20 which may be under control of a thermostat in the humidifier outlet, or from a conduit 15 connected to the extraction ducts 8. Dampers. are provided in the conduits 13, 14, 15 so that the constitution of the air supply can be regulated. The chamber 1 has an entry 2 and exit 3 provided with doors, and has also inspection doors or windows. The air is maintained at 80-85‹ F. during the treatment.
Patent GB-613299-A (GB)
Title: Improvements relating to portable tables and stands
IPC: A47B11/00
Filed: 1946-06-18
Abstract: 613,299. Pedestal tables, &c. McCORD, S. F. June 18, 1946. No. 18210. [Class 52 (iii)] Detachable splayed legs 3 of a pedestal table or stand are provided with upstanding lugs 8 adapted to be engaged within the hollow lower end of the central column or upright 1 and secured thereto by a single clamping nut 14 on a screw 12 fixed to the upright. The nut bears on a disc 10 lying in rebates 5 of the legs and having a raised rim portion 16 that causes the legs to tilt and forces the surface 4 of the legs firmly against the outer face of the column. Spaced ribs 17 on the top face of the disc receive the inner ends of the legs between them.
Patent GB-221608-A (GB)
Title: Improvements in and relating to apparatus for delivering measured quantities by volume of petrol and other liquids
IPC: B67D7/16
Filed: 1923-07-14
Abstract: 221,608. Chambers, C. July 14, 1923. Fixed - chamber apparatus; valve systems for; varying quantity measured in; w i t h several chambers; with counting and registering apparatus.-A mechanical device is provided either in the path of the discharging liquid or in the path of the overflow from the container or in both places, the device serving to control or set in operation an indicator or signal. Liquid from a pump is delivered through pipes 3 and valves 5 to containers 16. The valve spindles 9 have toothed wheels 10 gearing with a wheel on a shaft between them and in one with the handle 14 and are arranged so that one chamber is being filled while the other is discharging. The inlet port 6 of each valve is at right angles to the outlet port 7 and opens into the end of the valve communicating with a pipe 15 which is U-shaped and ends in a perforated member 25 inside the container. An opening 24 serves as a syphon break. The container is provided with a conical top 18 and a conical bottom 17. The top is provided with neck pieces 21 and adjustable screwed sleeves for setting the capacity of the chamber. From the annular spaces 20 formed by the top 18 and the upward continuation of the side wall openings 26 lead to a common overflow pipe and chamber 28. The chamber 28 houses a pivoted lever similar to the lever 41 one end of which carries an indicator and the other a cup provided with several holes. When liquid is passing through the overflow pipe the lever is tilted to expose the legend " full " through a transparent window. A similar arrangement is fitted in the path of the discharge pipe, the legend " wait " being exposed until a chamber is completely discharged. A vane may take the place of the cup. The spindle 12 carries arms which engage the spring hammer of a bell when the spindle is rocked; a cam on the spindle also actuates a counter 46, Specification 221,745 is referred to.
Patent GB-692922-A (GB)
Title: Improvements in the preparation of amino acids and products therefrom
IPC: C07D233/54
Filed: 1948-07-08
Abstract: Amino acids in an aqueous protein acid hydrolyzate are separated by extracting the mono-amino mono-carboxylic acids therefrom with a 3 to 5 carbon alcohol, treating the extracted hydrolyzate with a cation-exchange resin operating on the ammonium cycle to absorb the basic-amino acids and eluting these acids from the resin with an aqueous alkaline solution.  The recovered basic-amino acids and mono-amino mono-carboxylic acids may be used in preparing balanced therapeutic mixtures of essential amino acids (see Group VI).  In example (1), casein is hydrolysed by means of aqueous hydrochloric acid, passed through Amberlite IR-4B to remove excess of hydrolysing acid and cooled to precipitate tyrosine, the latter two steps being optional but yielding more pure amino acid fractions subsequently and the hydrolysate is then extracted with n-butanol, a mixture of leucine, isoleucine, methionine, phenylalanine, threonine and valine being recovered from the alcoholic extract; the hydrolysate is then concentrated and passed through "Zeokarb H" (Registered Trade Mark) or Amberlite IR-100, previously treated with aqueous ammonia, and the loaded resin is then eluted with 20 per cent aqueous ammonia to remove the absorbed arginine, histidine and lysine.  Dowex 30 is mentioned as another suitable cation-exchange resin. Specification 652,237 is referred to.ALSO:Amino acids for use in therapeutic mixtures are separated from aqueous protein acid hydrolyzates by extracting the hydrolyzate with a 3 to 5 carbon alcohol to remove the mono-amino mono-carboxylic acids, treating the extracted hydrolyzate with a cation-exchange resin operating on the ammonium cycle to absorb the basic-amino acids and eluting these acids from the resin by means of an aqueous alkaline solution.  In Examples: (1) casein is hydrolyzed with aqueous hydrochloric acid, treated with Amberlite IR-4B to remove excess of hydrolyzing acid and cooled to precipitate tyrosine, these two steps being optional but leading to greater purity in the final products, then the hydrolyzate is extracted with n-butanol and a mixture of leucine, isoleucine, phenyl alanine, threonine, methionine and valine recovered from the alcoholic extract; the extracted hydrolyzate is next concentrated and passed through "Zeokarb H" (Registered Trade Mark) or Amberlite IR-100, previously treated with aqueous ammonia and the loaded resin is then eluted with 20 per cent ammonia to remove the absorbed arginine, histidine and lysine; (2) a solution of balanced essential amino acids is prepared by compounding portions of the basic amino acid and mono-amino mono carboxylic acid fractions of (1) together with glycine and tryptophane and hydrochloric acid to give a pH of 6.5-7.0; (3) a solution of balanced essential amino acids is formed as in (2) with the addition also of more methionine.  Dowex 30 is mentioned as a further example of a cation-exchange resin for use in separating the basic amino acids.  Specification 652,237 is referred to.
Patent GB-1186731-A (GB)
Title: Improvements in or relating to Arrangements for Handling Bulk Material
Inventor: ANDERSSON HUGO
IPC: B07B1/12
Filed: 1967-04-21
Abstract: 1,186,731. Screening apparatus. H. ANDERSSON. 21 April, 1967, No. 18379/67. Heading B2H. A loading hopper for screening and tipping bulk material, e.g. for removing large stones from road making material and dumping them at a suitable tipping place, includes a screen comprising a first set of fixed bars 1, connected together, Figs. 1 and 2, and a second set of movable bars 2 held by mountings 3 allowing movement of the said bars from a first position (shown in full lines in Fig. 2), in which they are supported in a predetermined screening relationship to the fixed bars 1 when the screen is in a position in which screening can take place, to other positions (e.g. as shown in broken lines in Fig. 2) when the screen is in a position in which tipping of material not passing through the screen can take place. Rods 1 extend from a plate 1a  forming part of the bottom of the hopper having an end plate 4 and side plates 5 joined at their bottom corners at the open end of the hopper by a bar 6 which also joins the ends of the rods 1. Rods 2 extend from a plate 2a which is hinged at 3 to extensions of the plate 1a. In operation, the hopper is suspended horizontally above a truck platform and the material is fed on to the screen 1, 2. When a suitable quantity of oversize stones has been accumulated on the screen the hopper is transported to a suitable location and tipped so that its open end is downwards. In this position, the rods 2 swing slightly away from the fixed rods 1 thereby loosening stones which have become trapped between the rods. In a modification, the rods are replaced by square grids, Fig. 4 (not shown). In further modifications, Fig. 5, fixed rods 1c have movable rods located between them in different arrangements. Thus, movable rods 2c have their ends resting in grooves perpendicular to the plane of the screen at each end of the hopper so as to be capable of parallel movement on tipping of the hopper. Alternatively, the slots are V-shaped so that the rods 2e can also move laterally. In another construction the rods 2d have an elliptical crosssection so that during tipping they rotate in end mountings at each end of the hopper to the position shown in broken line thereby increasing the screen apertures.
Patent GB-871360-A (GB)
Title: Improvements in rolling-mill trains for the two-line rolling of fine iron and wire
IPC: B21B41/08
Filed: 1959-05-29
Abstract: 871,360. Rolling. SCHLOEMANN A.G. May 29, 1959 [May 29, 1958; June 10, 1958], No. 18388/59. Class 83 (4). In a multi-stage rolling-mill train for the twoline rolling of fine iron and wire wherein at least the finishing stage is constructed as an open stage and in which roll housings are arranged in groups, each of two or more, on the same straight rolling line with reversing guides between groups, the two or more roll housings on the same straight line have loop guides between them and to each of the loop guides a regulator is allocated, these regulators controlling the speeds of revolution of the rolls or the gap width of the rolls or both. Fine iron or wire is delivered from a furnace 1 to a preliminary stage 2 and an intermediate stage 3 of a multi-stage mill and then passes to an open finishing stage comprising pairs of stands 4 and 5, 6 and 7, 8 and 9, 10 and 11, 12 and 13, the pairs of stands being connected by reversing guides 24, 25, 26, 27, 31, 32 with loop beds. For rolling very small cross-sections a further stage 36 may also be provided. Two rolling lines 47, 48 are initially fed from the rearward stand to the forward stand of a pair, e.g. from the stand 4 to the stand 5 using guide sheets 49, 50, V-shaped curved grooves 52, 53 rockable about pivots 51 and guide plates 54, 55, after the initial formation of the loops the grooves 52, 53 being lowered out of the way leaving the loops free to move on a table. If the loop on line 48 enters a regulating field 19a on the table the speed of the rolls in stand 4 is increased while if the field 19b is penetrated the roll speed is diminished. Should the loop on rolling line 47 become different in size from that on the line 48 one of the regulating fields 19<SP>1</SP>a, 19<SP>1</SP>b may be entered, which entry starts a roll-positioning motor 46 (Fig. 3, not shown), which through a worm-operated screw adjustment alters the position of the upper roll in the stand 4 on the side of the stand on which the line 47 is running, further positioning or release of the roll being effected according to whether the loop 47 enters the field 19<SP>1</SP>a or or 19<SP>1</SP>b, the loop thereby being adjusted due to change of section of the work. When the loop leaves the regulating fields the roll returns to its normal position. Either the stand preceding or the stand succeeding the loop-guides may be adjusted for speed or roll-position. Individual rolls may be horizontally or vertically adjusted. German Specification 932,901 is referred to.