baber/WOPTO huggingface dataset:
Patent GB-771599-A (GB)
Title: Improvements in or relating to constructional elements
IPC: F16B5/02
Filed: 1954-03-11
Abstract: 771,599. Constructional elements. BEREND, P. C. Jan. 21, 1955 [March 11, 1954], No. 7137/54. Class 20(2)  A constructional element comprises a bar of right-angle L section wherein each flange contains a plurality of slots spaced along the entire length of the flange, and wherein the alternate slots in a flange are of similar right-angle chevron shape having their apices pointing in the same direction transversely to the length of the bar. As shown in Fig. 1, the constructional element has equal flanges 1, 2, each flange containing a similar series of right-angle chevron shaped slots 5-8 with their apices aligned with respect to the length of the bar along an axis Y-Y which is spaced from the inside of the bend of the bar at a distance equal to the slot pitch d. Alternate slots are staggered to form two oppositely facing rows in one of which the apices of the slots 6, 8 point transversely outwardly with respect to the bend of the bar, and in the other of which the apices of the slots 5, 7 point transversely inwardly with respect to the bend. The extremities of the arms of each slot are spaced at a distance equal to the slot pitch d. In a modification, Fig. 2 (not shown), the ,two flanges of the bar are of unequal width. The Specification gives examples of a right angled lap joint, a telescopic lap joint and a right angle box joint formed from the constructional elements and also describes a shelf and a hinge for use with the constructional elements. It is stated that the slots may be modified from the two-limbed or symmetrical design, whilst keeping the general chevron shape. Also the slots in one row, say 5, 7 may be of different shape. Further rows of slots such as 5, 7 and 6, 8 may be added in a wider flanged bar. In another modification the apices of the slots of the inner row 6, 8 point inwards towards the bend and the apices of the sl'ots of the outer row 5, 7 point outwards. The joints may be made with a fixing bolt 10, Fig. 4, having a locking spur 11 formed under the head 15 for engagement in the slot in the element 3 through which the bolt is passed. Alternatively the spur 11 may be formed on the nut 16. Specification 718,521 is referred to.
Patent GB-481330-A (GB)
Title: Electron discharge oscillation generator
IPC: H03B5/10
Filed: 1937-03-11
Abstract: 481,330. Valve circuits for wireless reception. BRITISH THOMSON - HOUSTON CO., Ltd. March 11, 1937, No. 7187. Convention date, March 11, 1936. [Class 40 (v)] In an oscillation-generator for use in a superheterodyne receiver, the circuit set up by a wave-range switch for the range of highest frequency is a modified Hartley circuit in which the plate and screen grid have the same oscillatory potential; and in order that the oscillations may not become unstable, a fixedly tuned mesh E<1> , 7 is inserted in series with the plate. For the lower four wave ranges magnetic reaction is used, and one of the tuned meshes As ... Ds is selectively connected in the grid circuit of oscillator 1 by means of a switch 2. These meshes are coupled to corresponding reaction coils Ap, Bp, Cp, Dp, in the anode circuit, which are selected by means of a mechanically coupled switch 3. The switch wipers carry insulated bridge members 41, 51 for shortcircuiting the elements belonging to the adjacent wave range. Tuning is completed by means of a larger condenser 6, the selected grid mesh As ... Ds (in series with a negligible inductance F) being shunted upon this condenser. For the fifth or ultra-high-frequency waveband, on the other hand, which extends from 18 to 70 Mc./sec., the anode coil E is selected by the switch 3. This coil is permanently coupled to coil E, which lies between the cathode and earth, and coil F is, in the ultrahigh-frequency position of switch 2, connected to form a circuit which is approximately that of a Hartley oscillator, but so modified that as regards oscillatory potential the anode and screen grid function as a single electrode connected to earth, while the cathode is connected to the common point of coils F, E and the tuning-condenser 6 is shunted across them In order that the damping which occurs in the network F, E 6 may not cause instability in the lower-frequency portion of the ultra-highfrequency wave range served by the circuit just described, the coupled anode circuit is provided with a rejector mesh E<1>, 7 which is tuned to a frequency somewhat below the range in question, so as to raise the anode impedance as the frequency is lowered within that range, and thus to stabilize the oscillations. The oscillator 1 may be coupled to the first detector 11 of a superheterodyne receiver by means of a condenser 10 which, for the ultra-high-frequency range, connects the oscillating cathode of the oscillator 1 to a grid of the detector 11. For other wave ranges, however, the impedance of coil E is negligible, so that the cathode of the oscillator 1 is effectively earthed, and the condenser 10 becomes a coupling between grids of the oscillator and detector. In a modification, Fig. 3 (not shown), the coupling between the two valves is effected by means of additional switch contacts whereby the grid of the detector is connected to the anode of the oscillator in the lower wave ranges and to its cathode in the ultra-high-frequency wave range.
Patent GB-966452-A (GB)
Title: Water dispersible antibiotics
Inventor: STONE IRWIN MADDLIN
Filed: 1963-02-23
Abstract: The water-dispersibility of a water-insoluble polypeptide antibiotic is increased by dissolving the antibiotic and a highly water-soluble polymeric material in a non-aqueous solvent such as methanol, ethanol, isopropanol, benzyl alcohol or pyridine and then removing the solvent, preferably by evaporation, to obtain a dry readily water-dispersible complex. The antibiotic may be tyrothricin, tyrocidine or gramicidin and the polymeric material may be a polymer or copolymer of vinyl pyrrolidone, a poly-N-vinyl oxazolidinone or a block copolymer of polyoxyethylene and polyoxypropylene.ALSO:A dry, readily water-dispersible complex of a water-insoluble polypeptide antibiotic and a highly water-soluble polymeric material is obtained by dissolving the antibiotic and the polymeric material in a non-aqueous solvent such as methanol, ethanol, isopropanol, benzyl alcohol or pyridine and then removing the solvent, preferably by evaporation.  The antibiotic may be tyrothricin, tyrocidine or gramicidin and the polymeric material may be polyvinyl pyrrolidone, a copolymer of vinyl pyrrolidone and vinyl acetate or vinyl alcohol, a poly-N-vinyl oxazolidinone or a block copolymer of polyoxyethylene and polyoxypropylene.
Patent GB-803660-A (GB)
Title: Improvements in pressure exchangers
IPC: F04F13/00
Filed: 1954-12-08
Abstract: 803,660. Pressure exchangers. PEARSON, R. D., and HOOTON, G. E. Dec. 8, 1954, No. 7393/58. Divided out of 803,659. Class 8(1) The degree of scavenging in a high pressure scavenge stage is controlled by means of a movable vane 34 which controls the point of admission of the scavenge gas from duct S2D and the amount of gas supplied to the rotor from a duct S2C which is supplied with gas from the outer annular chamber of a combustion chamber fed with gas by the duct S2B, the combustion products being returned to the duct S2D. The vane is cooled by allowing a small part of the gas from duct S2C to flow over that side of the vane in the duct S2D.
Patent GB-125063-A (GB)
Title: Improvements in Apparatus for Measuring by Integration the Total Heat Units Consumed in Hot Water Systems and the like.
Inventor: KOCK BIRGER
IPC: G01R11/00
Filed: 1919-03-25
Abstract: 125,063. Kock, B. March 25, 1918, [Convention date]. Heat and temperature coefficients, apparatus for determining.-The total number of heat units supplied in a heat-supply system by a heating-fluid is measured by integration by means of a temperature-measuring device, consisting of a galvanometer actuated electrically to indicate at a distance the difference in temperature between supply and discharge, in combination with a liquid meter adapted, when a certain quantity of water or other heating-liquid has passed through the system, to actuate a counting-mechanism by an amount depending on the position of the pointer indicating the temperature difference which pointer during actuation is returned to the zero position. As shown in Fig. 1, the windings 2, 3 and 4, 5 of the galvanometer are connected in parallel with resistances R<1>, R<2> arranged in the supply pipe A and discharge pipe B, Fig. 5, respectively. The resistances R<1>, R<2> are in series with a calibrating-resistance R<3> in the circuit 14 of a lighting system, storage battery, or other source of current. The resistances R<1>, R<2> are small compared with the resistance of the circuit 14, so that the current passing through the resistances and'the windings will be proportional to the temperature of the resistances and will cause the indicating-pointer 25 to assume a position depending on the temperature difference. In the circuit 14 is arranged' a circuit-breaker 15 which by suitable means is actuated intermittingly by the water-meter 16, at equal intervals of flow, to close a circuit 17, 18 and thereby to energize an electro-magnet 19 which, through its armature. rocks a lever 21. This lever carries a spring pawl 22 which is brought into engagement with the teeth of a ratchet-wheel 23, gearing with the first wheel of a counting mechanism by means of a pin 27 on the pointer 25, and actuates the ratchetwheel until the pointer is returned to its zero position. In a modification, two resistances R' are provided and the resistances R<1>, R<2> are connected in series with the galvanometer and the circuits thereof in parallel with the circuit 14. A thermoelectric galvanometer may be used and the total heat units passing through a pipe may be measured by placing one terminal of the thermo-electric couple in the pipe and by exposing the other to the surrounding air so that the pointer indicates the difference in temperature between the pipe and the atmosphere.
Patent GB-1435448-A (GB)
Title: Allgaeuer maschinenbau toggle-lever power amplifier
IPC: B25B1/10
Filed: 1974-02-19
Abstract: 1435448 Toggles SAURER-ALLMA GmbH ALLGAUER MASCHINENBAU 19 Feb 1974 [19 Feb 1973] 7530/74 Heading F2K A toggle mechanism providing high clamping pressures for example on workpieces or tools in a machine vice (Figs. 10 and 11, not shown) comprises one or more pairs of toggle levers 1a, 2 (three pairs as shown), each pair of levers 1a 2 being supported directly on one another and on a fixed abutment disc 3 and a movable output pressure block disc 4 by curved i.e. radiused ends 5 and 7, 6 and 9 and 8 and 10 respectively whereby during operational movement of the power amplifying toggle arrangement, by a manually axially movably screwed central spreader 11, all the radiused surfaces simply roll on one another with line contact such that frictional resistance and wear are minimized. Adjustable spring-loaded screwed pins 22 resiliently connect the discs 3 and 4 to form a unit and serve to laterally support and guide the pairs of toggle levers 1a, 2, a spring pack 19 serving to resiliently bias the unit to its released condition. Balls 21 inserted loosely in bores in the rolling surfaces 5 and 7 serve to prevent mutual displacement of the toggle levers 1a, 2 in the unstressed condition. The rolling radii of the toggle levers la, 2 and the discs 3, 4 may be varied from smaller radius at the start to a larger radius at the finish of each rolling surface (Figs. 7 to 9, not shown) such that the actual tightening stroke of the vice, during toggle lever operation, can be effectively increased, the stroke having an initially larger movement and low clamping force and finally a low movement accompanied by a high clamping force.
Patent GB-126447-A (GB)
Title: Improvements in or relating to Apparatus for use in Filtering and Straining Liquids.
Inventor: MILNER HARRY LAWLEY
IPC: B01D25/02
Filed: 1918-05-06
Abstract: 126,447. Milner, H. L., and Beeby, A. R. May 6, 1918. Filters having sheet filtering - materials. - In a filter having sheets of filtering - material 23 clamped between disks 19 provided w i t h perforated flanges 21, 24 through which the liquid to be filtered flows, the disks 19 are threaded on a perforated pipe 4 which may serve as an inlet or outlet pipe. The sheets 23 may be made of chamois leather, or other dressed or undressed hide or skin. The pipe 4 is connected bv a boss or flange 7 to a plate 12, and the whole is enclosed in a casing 1.
Patent GB-145160-A (GB)
Title: Improvements applicable to cigarettes and cigars, or cigarette and cigar holders and pipes
IPC: A24F7/04
Filed: 1919-03-26
Abstract: 145,160. Rosen, J. March 26, 1919. Cigarettes ; cigars; tobacco pipes and cigar and cigarette holders.-Smoke from the tobacco is filtered by asbestos or similar non-combustible material 5, 6, 20, 25, 30, inserted in a loose condition in the end of a cigar, &c. or in a mouthpiece or holder, or it may be wrapped in paper, or made in the form of a porous plug for insertion in a mouthpiece, holder, bowl, or stem, or it may be inserted in a perforated casing 33 fitted with a perforated detachable cover 34. Reference has been directed by the Comptroller to Specifications 6133/87, 4445/93, 8572/94, 16080/95, 1895/01, 9244/01 and 1846/05.
Patent GB-872337-A (GB)
Title: Improvements relating to electric isolating switches
IPC: H01H1/42
Filed: 1959-03-04
Abstract: 872,337. Air-break switches. SWITCHGEAR & EQUIPMENT Ltd., and OXLEY, D. A. J. March 2, 1960 [March 4, 1959], No. 7597/59. Class 38 (5). In an isolating switch having vertical insulators 10 carrying fixed contacts 12 arranged to be bridged by a moving contact bar 14 carried on an intermediate movable insulator 11, the latter is rotated to bring the moving contacts 13 into the fixed contacts 12 and then moved axially to wedge the moving contacts into the fixed contacts. The bar 14 is carried on arms 15 pivoted at 16 to offset projections of a bracket 17 secured to the insulator 11 and arranged so that the axis of the bar 14 intersects that of the insulator 11. In the open position the bar 14 rests on adjustable stops 18. The insulator 11 is carried on a sleeve 21 slidable in a cylindrical guide 22 which is slotted at 25 to receive rollers 26 on pins projecting from the sleeve 21. A nut 23 forming part of the sleeve 21 engages a motor-driven screw-threaded shaft 24 which is rotated to raise and lower the insulator 11. As the sleeve 21 is lowered to close the isolator the rollers 26 enter the inclined portions 28 of the slots 25 and the parts 21, 11, 14 are rotated until the contacts 13 enter the fixed contacts 12 and the .rollers enter the vertical parts 27 of the slots 25. On further downward movement of the insulator 11 the arms 15 rotate about their pivots 16 to twist the bar 14 so that projections 32 on the contacts 13 wedge in the fixed contacts. The latter are formed of bent spring blades 33 having outer links secured by bolts 41 and reentrant portions 34 connected by a case 35 attached to the lower limb, a bolt 36 being secured to the upper limb with a compression spring 37 between a flange 38 on the case and the head of the bolt 36. The case limits the inward movement of the blade ends and a nut 39 may be adjusted to set the spring tension. The curved parts of the slots 25 are arranged to give uniform acceleration and deceleration to the bar 14 and the shaft 24 may be coupled to a polyphase drive shaft by skew-gears 44, 45. The sleeve 21 may alternatively be formed as a piston for hydraulic operation.
Patent GB-998990-A (GB)
Title: Method for producing high shrinkage acrylic fibers
IPC: D01D5/22
Filed: 1963-02-26
Abstract: 998,990. High shrinkage polyacrylonitrile fibres. MONSANTO CO. Feb. 26, 1963 [March 19, 1962], No. 7597/63. Heading B5B. Filaments of synthetic linear polymers, composed of at least 80% by weight polyacrylonitrile, which exhibit high shrinkage when immersed in boiling water or subjected to dry heat, are produced by first subjecting the filaments after spinning to a stretching step at a low ratio stretch ratio in the range of 1À5 to 2À5 while they are being passed through a bath of boiling water, subjecting the stretched filaments to wet steam under a pressure of 35-55 p.s.i.g., then subjecting the filaments to a second stretching step at a low ratio stretch in the range of 1À7 to 3À0 while they are being passed through a water bath maintained at 70 to 95‹ C.; then cooling the filaments under tension and at constant length and thereafter drying them, at a temperature below 70‹ C. The fibres may be composed of a copolymer of 94% by weight of polyacrylonitrile and 6% by weight of polyvinyl acetate, or of a blend of 88% by weight of the above copolymer and 12% of a copolymer of 50% polyacrylonitrile and 50% methyl vinyl pyridine.
Patent GB-287071-A (GB)
Title: Improvements relating to drills
IPC: B28D1/00
Filed: 1928-03-12
Abstract: 287,071. Steehouwer, G. March 12, 1928. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 12, 1928]. Drills and cutters.-An annular drill, particularly designed for cutting glazed tiles, comprises a shank 2 carrying a head 1 having a transverse bore through which an arm 6 is radially adjustable. The arm has a groove 7 for receiving a guiding screw 5, the other side being flattened for engagement by a clamping screw, and is provided at the end with an interchangeable cutter 11 adjustably secured bv a screw 12. An interchangeable drill 3 is secured to the head so as to project beyond the cutter 11 and cut substantially or completely through the tile before the latter commences to act, thus ensuring a good guiding action. The drill 3 may be provided with helical chip-clearing grooves.
Patent GB-145845-A (GB)
Title: Improvements relating to paper making machines
IPC: D21F9/04
Filed: 1919-03-28
Abstract: 145,845. Thompson, J. March 28, 1919. Cylinder paper-machines; suction apparatus; felis; wet presses and couch rolls; moulds.-In a paper-making machine which mav be adapted to produce sheets of paper in imitation of handmade paper, a mould drum or cylinder a, which may have strips of canvas or other material forming mould spaces for the sheets, and is provided with partitions and a conical inner periphery together forming compartments adapted for suction, has the suction applied simultaneously at one end of the cylinder to a number of compartments by an elbow pipe fitting k. A suction couch roll and suction press rolls o, o<1>, p, p<1> are used, and the sheets are delivered by a felt t passing beneath a suction box y which, by the automatic cutting-off of the suction and the introduction of pressure in any suitable manner, enables the sheets to be released in the desired position for subsequent drying and pressing. The cylinder a co-operates with a pulp trough c of which it forms one side in the manner of the fountain roll of a printing-press.
Patent GB-249559-A (GB)
Title: Improvements in or relating to steam generating systems
IPC: F01K1/04
Filed: 1926-03-22
Abstract: 249,559. Wõrmespeicher Dr. Ruths Ges. March 21, 1925, [Convention date]. Hot-water storage apparatus. - In a boiler plant comprising an accumulator or hot-water storage chamber into which surplus boiler steam is discharged as described in Specification 129,272, the temperature or pressure in the accumulator is kept constant by controlling the water supply in accordance with the supply of surplus steam described in Specification 191,746. When the pressure in the steam pipe L4, Fig. 1, of a boiler K rises, a valve UV opens and allows surplus boiler steam to flow into an accumulator Sp, to which water is admitted through a valve W operated in accordance with the pressure or temperature in the accumulator. Water is supplied to the boiler from the accumulator either by a pump P2 or directly through a control valve. Hot water and steam may be taken off from the accumulator through pipes L6, L5. Steam may be supplied to the accumulator directly from the boiler. The water supply to the accumulator may be preheated. Cold water may be supplied to the boiler through a valve E, Fig. 3, operated in accordance with the boiler pressure. The valve E controls the water flow in an opposite sense to the valve D between the accumulator and the boiler. The valves E, D, UV may be mechanically connected together. The steam pressure in the boiler steam pipe may be maintained constant by passing the steam through a reducing valve, surplus steam being taken from the pipe at a point before the reducing valve for supply to the accumulator.
Patent GB-909596-A (GB)
Title: Composition and method for the sequestering of compounds of iron
IPC: D06M11/38
Filed: 1959-03-06
Abstract: An aqueous 10-33% sodium hydroxide solution used for making alkali cellulose for viscose contains an amount of alkali metal glucoheptonate sufficient to sequester any traces of iron present in the solution.  Sodium glucoheptonate is preferably used in a concentration of 0,01-10%.ALSO:A rust-removing composition consists of a 10-33% aqueous solution of sodium hydroxide containing an amount of a soluble alkali metal glucoheptonate sufficient to sequester the ferric hydroxide obtainable from the rust.  Sodium glucoheptonate is preferably used in a concentration of 0.01-10%.
Patent GB-766225-A (GB)
Title: Hydrocarbon drying oil production
IPC: B01J8/10
Filed: 1955-03-18
Abstract: 766,225. Synthetic drying oils. ESSO RESEARCH & ENGINEERING CO. March 18, 1955 [April 2, 1954; Feb. 1, 1955], No. 7956/55. Drawings to Specification. Class 2 (6). A drying oil is prepared by polymerizing 50 to 100 parts of butadiene-1,3 or a hydrocarbon substituted butadiene, e.g. piperylene, isoprene or dimethylbutadiene, and 50 to 0 parts of styrene or a ring alkylated styrene, e.g. pmethyl styrene, m-methyl styrene, dimethyl styrene or corresponding ethyl homologues, diluted with an inert hydrocarbon diluent, which is liquid at reaction temperatures and pressures, and an alkyl ether or cyclic diether, having oxygen atoms separated by at least 2 carbon atoms, containing 2 to 8 carbon atoms per molecule, e.g. diethyl ether, the diethyl ethers of ethylene glycol and diethylene glycol, diethyl acetal, vinyl isobutyl ether, dihydropyrane, ethylal and dioxane-1,4, in the presence of a finely-divided alkali metal catalyst, e.g. lithium, sodium, potassium, rubidium, caesium, at temperatures from 40 to 95 C. to at least 40 per cent conversion and continuously passing to at least one additional zone at an equal or higher temperature until 100 per cent conversion is obtained. 10 to 50 per cent, based on the catalyst, of an alcoholic promoter, e.g. isopropanol, isobutanol, isopentanol, secondary butanol, tertiary butanol, may be added. The hydrocarbon diluent may be naphtha, Varsol, butane, pentane, benzene, toluene, xylene, cyclohexane, butenes, pentenes or mixtures of these. The catalyst is destroyed by the addition of an acid, e.g. formic, acetic, pentanoic or sulphuric acid, excess of which is neutralized by ammonia and the salts filtered off using a filter aid, e.g. silica gel, clay or charcoal. The ether, alcohol and excess diluent are distilled off and recycled. Further quantities of catalyst, which may be liquid at the higher temperature, and/or promoter may be added to the second zone. Preferably the first zone is charged and reacted to about 80 per cent conversion before the continuous process is commenced. The product may be heated at 120 to 180 C., or at 180 to 210 C. in the presence of maleic acid, acrylonitrile or thioglycolic acid, to effect bodying and improve pigment wetting, and may be concentrated to 99 per cent or more non- volatile matter to form a clear or light yellow varnish. Cobalt, lead or manganese naphthenates or octoates may be added. In examples: (1) butadiene-1,3 and styrene are polymerized in a three-stage reactor in the presence of dioxane, diethylether, naphtha, sodium and isopropyl alcohol, commencing with a batch-type operation in stage 1 to 80 per cent conversion; (2) a five-stage reactor is employed and a proportion of recycled ether, alcohol and diluent is used.