baber/WOPTO huggingface dataset:
Patent GB-242803-A (GB)
Title: Improvements in or relating to machine guns
IPC: F41A21/48
Filed: 1924-12-13
Abstract: 242,803. Schreiber, B., and Zbrojovka Praga Spolecnost s.r.o. Dec. 13, 1924. Machine guns.-To permit of readily exchanging the barrel for cooling purposes, the gun casing B, which engages the barrel A by interrupted threads, is rotated after releasing a spring catch 7. The barrel A carrying the head' 2 and silencer 3 can then be withdrawn longitudinally by grasping a heatinsulating handle 5 rotatably mounted on the barrel. A rib 15 on the gas cylinder engages a groove on the barrel to prevent relative rotation. The barrel rests in a stirrup 10 forming an extension of the two-legged front support D mounted on the gas cylinder. The front part of the gas cylinder has an extension 9 carrying a port 12 for cleaning the barrel head. Stops are provided to limit the rotation of the gun casing in each direction.
Patent GB-927128-A (GB)
Title: A process for the manufacture of metallo-complex formazane-dyestuffs
IPC: C09B50/00
Filed: 1959-09-03
Abstract: Copper, cobalt or chromium complexes of o:o-dihydroxy-formazane dyes of the formula <FORM:0927128/IV(a)/1> where R1 is an aromatic residue substituted by a hydroxyl group ortho to the azo linkage and which may be further substituted, R2 is a substituted or unsubstituted aromatic residue and R3 is phenyl or naphthyl having a hydroxyl group ortho to the nitrogen atom and which may be further substituted, are made by coupling an o-diazophenol or o-diazonaphthol or an ether thereof with a compound of the formula R1-N=N-CH2CONH-R2 in an aqueous alkali-metal hydroxide solution, the product then being boiled with an aqueous copper, cobalt or chromium salt solution. Specified diazo-phenols or diazonaphthols are those derived from 2-aminophenol-4-sulphonamide 2-aminophenol-4-sulphonic acid and 3:31-dimethoxy-4:41-diaminodiphenyl and 1:2-diazonaphthol-4-sulphonic acid.  Coupling components are the compound of the formula <FORM:0927128/IV(a)/2> and compounds of this formula carrying a sulphonamide or sulphonic acid group para to the hydroxy group. Wool, cellulose and polyamide fibres are dyed by the above metallized and unmetallized dyes and dyeings from the latter may be subsequently metallized.  In examples, wool dyed by (2) 2-aminophenol-4-sulphonic acid --> 2-hydroxy-benzeneazo-omega-acetanilide and by (3) 3:31-dimethoxy-4:41-diaminodiphenyl --> 2-hydroxy-5-sulphophenyl-azo-omega-acetanilide is boiled with copper sulphate solution.
Patent GB-445790-A (GB)
Title: Improvements in and relating to asbestos-cement flanged, socketted, spigotted and ball-jointed pipes and apparatus for making the same
IPC: B28B21/80
Filed: 1934-10-19
Abstract: 445,790. Moulding asbestos-cement pipes. BROWN, T. F. K., CHICK, H. E., and GREEN, L. G., 375, Smith Street, Durban, South Africa. Oct. 19, 1934, No. 30036. [Classes 70 and 87 (ii)] Asbestos - cement pipes are made by pressing an aqueous asbestos - cement mixture against the internal surface of a rotating, horizontal, perforated mould by means of a mandrel or spindle located internally of the mould, the moisture being expressed from the mixture through the perforations by the radial movement of the mandrel. As shown in plan in Fig. 2, for making cylindrical pipes with flanged ends, the apparatus comprises a perforated mould 1 having its ends united to perforated sockets 2, Figs. 2 and 6, provided with enlarged ends 3 engaged by perforated end plates 6. The end plates 6 are provided with central bores 8 surrounded by recesses 9 on the outer faces of the plates, the bores and recesses receiving flanged collars 10 through which pass a mandrel 11. The ends of the mandrel 11 are carried by bearings 12 in levers 15, the rear ends of which are slidably mounted on spindles 16 carried in bosses at the top of brackets 17, 18 on the base plates 19. The front ends of the levers 15 are removably attached to a cross-bar 22 or are pivoted to collars which rotatably engage hand-operated vertical shafts having a screw-threaded engagement with members carried by the base plates. The ends 3 of the mould rest on pairs of pulleys 13, 13 carried by the brackets 17, and the mould is provided with a driving wheel or pulley 31. The mould may be made in one, two or more parts, may consist of wire mesh, and may be adapted to form a spigot or flange at one end of the pipe and a socket at the other, in which case the mandrel is provided with an enlargement to form the hollow part of the socket. The asbestos-cement mixture preferably comprises 8 lbs. of cement, 1 lb. of long fibre asbestos, and 4 pints of water. In use, before the mould is rotated, the collars 10 are moved away from the end plates 6 sufficiently to enable the inner faces of the collars slidably to engage the adjacent faces of the recesses 9, thus allowing the mandrel to be depressed by the cross-bar 22 or by the operating shafts. Additional pressure may be applied to the interior of the pipe by an inflatable rubber bag which is introduced after removal of the mandrel. After moulding, the upper part of the mould is removed, a portable cradle of porous material such as plaster of Paris or cement is placed over the exposed part of the pipe, the mould is turned over, the other part of the mould removed, and the pipe allowed to dry in the cradle. Alternatively, the mould may be provided with a. perforated liner in which the moulded pipe is removed for drying.
Patent GB-286004-A (GB)
Title: Improvements in and relating to book rests
IPC: A47B23/04
Filed: 1926-11-27
Abstract: 286,004. Hunter, P. C. Nov. 27, 1926. Book &c. rests; book-markers.-An extensible or telescopic member provided with hook ends to engage one cover of a book has a stay hinged thereto with a transverse, supporting bar 10 at the foot of the stay preferably roughened or rubber-covered. A hook 6 on an elastic strip 4 engages a book while a hook 5 at its lower end engages one of a series of slots 2 in a metal strip 1 carrying a lower hook 3. Hinge pins on the ends of the wire stay 9 engage pressed out portions 7 of the strip 1. A single length of rubber may carry two hooks and a hinged stay, or the rest may comprise a metal strip 12 sliding in a body portion 11 of the hook 6 and held by a screw 13 or by friction. A length of flexible material 20 preferably with a weight at the free end is attached as a book-marker.
Patent GB-843736-A (GB)
Title: Improvements in current rectifiers having a large number of stages connected in cascade
Inventor: HEILPERN WALTER
IPC: H02M7/10
Filed: 1958-09-19
Abstract: 843,736. Rectifying. HAEFELY & CIE A.G., E. Sept. 19, 1958, No. 30057/58. Class 38(2). In a high-voltage cascade rectifier supplied at E 1 , E 2  by a high-voltage intermediatefrequency transformer, reactive currents due to stray capacitances C 1 <SP>(3)</SP>-C 3 <SP>(5)</SP> between the capacitor columns are compensated by connecting reactors L 1 -L 3  between selected points of the columns, the reactors having inductance values matched to the stray capacitances so as to give overall parallel resonance at the working frequency and the potential at the pairs of selected points differing only by the input alternating voltage. There may be one reactor for each of the cascade stages or one for alternate stages, their inductances then being in parallel resonance with restively the stray capacitance corresponding to one stage and that corresponding to two stages. If the cascade rectifier comprises one smoothing capacity column and two or more coupling capacity columns compensating reactors are connected between each coupling capacitor column and the smoothing capacitor column or, in the case of a symmetrical cascade connection as described in Specification 770,605, they may be connected between the two coupling capacitor columns.
Patent GB-923049-A (GB)
Title: Data storage devices and logical circuits employing such devices
IPC: H03K19/16
Filed: 1961-08-21
Abstract: 923,049. Circuits using bi-stable magnetic cores. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 21, 1961 [Aug. 25, 1960], No. 30093/61. Class 40 (9). A data storage element comprises a pair of magnetic cores in which a reset condition applies when the first core is in the " zero " condition and the second is in the " one " condition, a stored data condition applies when these states are reversed, and readout is accomplished by driving both cores to the " zero " condition while sensing the polarity of the output pulse, which is determined by which core is switched. A number of such core pairs is assembled in a group to perform logical functions. In a first embodiment (Fig. 1), a positive output is produced whenever half or more of the fifty inputs are satisfied. All the cores are threaded by a reset winding 18 in such a way that cores 10 in one group are reset to " zero " and cores 12 in the other group, and control cores 14 and 16 are reset to " one." The sense conductor 22 is threaded so that switching of a core in the upper row, from " one " to " zero," produces a positive pulse, and switching of a core in the lower row produces a negative pulse. In operation the cores are first reset by energizing 18. If twenty-four of the inputs 24 are then satisfied the corresponding cores in the upper row are switched to the " one " state and those in the lower row to the " zero " state. There are then twenty-six " one " cores in each row and no net output is produced. If twenty-five or more of the inputs are satisfied the number of " one " cores in the upper row exceeds that in the lower row and a positive output is produced. By varying the number of control cores 14, 16, and the senses in which they are reset, the changeover from a negative to a positive output can be arranged to occur when different numbers of inputs are satisfied. Fig. 2 shows a unit capable of operation as a 3-way AND circuit, a 2Àway AND circuit, and an OR circuit. When inputs D1, D2 to control cores 48 to 54 are not energized, a positive output is produced only when all three inputs A, B, C are satisfied. If D1 is energized to reverse cores 48 and 50, a positive output is produced when any two of the inputs A, B, C are satisfied. Energization of D2 switches cores 48 to 54 to give a positive output when any of the inputs A, B, C is satisfied. The embodiment of Fig. 3 detects the presence of two inputs A, B and the absence of two others C, D. Any other combination results in a negative output.
Patent GB-317258-A (GB)
Title: Improvements relating to the manufacture of felted fibrous pads
IPC: D04H17/00
Filed: 1928-10-18
Abstract: 317,258. Abbott, E. J. Oct. 18, 1928. Felt.-In a process for making felted fibrous pads, e.g. sampling pads for use in dyeing, the fibrous material 8, Fig. 6, is peripherally confined in a chamber 33 and subjected to pressure between substantially flat parallel surfaces 29, 34 which have a rotary and reciprocatory relative motion. The material is first carded, formed into a coil, and tamped by hand in the device 3, 6, Fig. 3. The material in the chamber 33 is moistened with a soap solution before felting and the finished pad washed and dried by an air blast. The surface 29 is preferably a rubber pad carried by a plate 25 which is supported on a crank pin 24 in a crank disc 22, the latter being supported on a shaft 14 driven by a belt 15a, Fig. 7.
Patent GB-1494936-A (GB)
Title: Fishing float
IPC: A01K93/02
Filed: 1976-07-12
Abstract: 1494936 Anglers' floats J L CRUZ 12 July 1976 [18 July 1975] 30244/75 Heading A1A The float is formed in two sections 1, 2 and has a cavity housing batteries 12, 13 feeding a light emitting diode 7 via resistance 14. In an embodiment the two float sections can be turned to break contact between the batteries and the diode. The batteries can be mounted in a disposable part of the float.
Patent GB-303128-A (GB)
Abstract: 303,128. Clavel, R. Dec. 30, 1927, [Convention date]. Yarns and threads, treating with liquids.- Natural or artificial silk in hank, fabric or other form is loaded and dull-lustred by treatment with an aqueous solution of a usual metallic loading salt, e.g. stannic chloride or lead acetate, followed by introduction without washing, acidification or neutralization into a bath of an alkalinereacting alkali phosphate solution or of an alkaline earth phosphate, preferably slightly acidified. Treatment with the phosphate may precede the loading treatment while the silk may also be treated with solutions of alkaline earth salts either before or during immersion in the metallic salt bath. If desired the silk may be first treated with acids such as formic, phosphoric or monochloracetic acid or with acid salts preferably in the presence of protective colloids, or the. acids or acid salts may be added to the metallic salt bath. Examples :-1. A silk fabric is treated with a solution of stannic chloride, 15‹ Be, containing if necessary some mono-chloracetic acid. It is then passed without washing into a weakly acid 3 per cent solution of di-sodium phosphate, magnesium phosphate or di-calcium phosphate, wrung out, and the process repeated until the desired degree of loading is obtained. 2. Dyed hanks of untwisted silk are dipped in a solution of stannic chloride, 8‹ BÚ, containing magnesium and calcium chlorides. They are then pressed out and passed through an 8 per cent solution oi di-sodium phosphate. 3. A silk fabric is passed through a solution containing 10 per cent magnesium chloride and 10 per cent calcium chloride; then through an 8‹ BÚ. solution of stannic chloride and further treated as in example 2. 4. A viscose fabric is treated for 5 minutes in a cold 12 per cent lead acetate solution and then at 30‹ C. in a 2 per cent solution of disodium phosphate. 5. A mixedfabric is passed through a 4 per cent solution of di-sodium phosphate, pressed out and then passed through a sizing bath containing lead acetate and acetic acid. 6. Silk net is stirred in a 2 per cent disodium phosphate solution, squeezed out and passed into a 2 per cent stannic chloride solution containing sodium chloride.
Patent GB-303134-A (GB)
Abstract: 303,134. Ruth-Aldo Co., Inc., (Assignees of Barthelemy, H. L.). Dec. 29, 1927, [Convention date]. Cellulose acctate ; preparatory trealment of cellulose.-Cellulose to be used in the manufacture of cellulose acetates is subjected to a pretreatment with glacial acetic acid and with a halogen or halogen halogenide, such as iodine trichloride, both the acetic acid and the halogen or halogen halogenide being either in the vaporized ur atomized state. The temperature should not exceed 65‹ C. and should preferably be between 20‹ C. and 40‹ C. The pretreatment process can be effected, for example, by treating the cellulose with the halogen or halogenide in gaseous form prior tu or after the treatment with acetic acid vapour or simultaneously therewith and alternatively with a mixture of the acetic acid and halogen or halogen halogenide in the vaporized or atomized state. Cellulose pretreated in this manner receives a supplementary bleaching and is more reactive to the acetylating agents, whilst the presence of the residual halogen enables the quantities of sulphuric acid used in the acetylation bath to be reduced considerably. In examples, boiled and bleached cotton is treated consecutively with chlorine gas, dry air to remove the excess of chlorine so that 0.5 per cent of chlorine referred to the weight of the cotton is left in the cotton, and acetic acid vapours, acetylation being carried out preferably by the process described in Specification 282,788 after allowing the mass to stand for a period; cotton dried to contain not more than 1 per cent of moisture is treated with vapours obtained from a mixture of glacial acetic acid and bromine and after cooling an acetylation is effected in known manner, for example in presence of sulphuric acid; dry carded cotton is treated with acetic acid vapours and, after cooling, with a current of chlorine gas until 0.5 per cent of chlorine referred to the weight of the cotton has been fixed, acetylation being effected in known manner. Specifications 237,567, 263,938 and 282,794 also are referred to.
Patent GB-702979-A (GB)
Title: Improvements in or relating to ventilating devices
Inventor: WYLIE THOMAS
IPC: B63J2/10
Filed: 1951-12-28
Abstract: 702,979. Ventilators. AXIA FANS, Ltd. Dec. 10, 1952 [Dec. 28, 1951], No. 30319/51. Class 137 A ventilating device for admitting air under pressure into a room', or compartment, for ventilating warming, or cooling it, has an air delivery opening controlled by a shutter which is adjustable to produce either. a diffused, or a directional, air supply. A flat disc 1, rotatably mounted in a circular opening in a wall plate 2 has. a central opening 4' of rectangular shape communicating with a conduit 5 projecting from the rear side of the disc and communicating with a supply of compressed air. A rectangular shutter 6 has webs 7, 7, projecting from its rear face the webs carrying pins 8, 8 for mounting the shutter in front of the disc 1. The two pins 8, 8, which may be formed by the opposite ends of a cross-bar 10, are adapted to slidably engage arcuate slots 9, 9 in the walls of the conduit 5 so that the shutter 6, rocking about one edge as a fulcrum, can be swung open to an inclined position to deflect a stream of air out of one side of the opening. The slots 9, 9 communicate with slots 11, 11 which extend approximately parallel to the disc 1 and allow pins 8, 8 to slide in them so that the shutter 6 can be moved to a position, Fig. 4, where it is parallel to, and spaced from, the disc 1 for supplying non-directional diffused air. A knob, or handle 12 is provided to adjust the shutter 6, the webs 7, 7 in sliding contact with the side walls of the conduit 5 having sufficient frictional grip to hold the shutter in any adjusted position. In a modification, Fig. 8, the disc 1a has a flange 1b which is constrained by a spring 14 against a ring member 13 secured to the rear of the profiled wall plate 2a. The tubular conduit 5a is closed by a circular shutter 6a which has a groove 6b to receive a beading 4b along the upper edge of the rectangular opening 4a of the conduit 5a when the shutter 6a is pivoted to an open position.
Patent GB-917590-A (GB)
Title: Improvements in or relating to electrical switches
IPC: H01H1/36
Filed: 1960-09-02
Abstract: 917,590. Mechanical switches, without quick action. SIEMENS & HALSKE A.G. Sept. 2, 1960 [Sept. 2, 1959], No. 30338/60. Class 38 (5). A rotary switch has an M-shaped compression spring 1 whose outer legs are pressed by a disc 2 against a central member 3 rotatable with the switch spindle, and whose inner legs are bent at 4 so that their junction engages a wedge-shaped recess 5 in an insulating member 6 carrying a contact bridging fixed contacts 7, 8, the shape of the recess 5 allowing slight rocking of member 6 during its movement, which is effected by its engagement with areas 9 on the outer legs of the spring 1. The contact 8 may comprise an endless loop pick-up ring or part of a multi-element pick-up ring, provided with a number of contacts 7. Composite compression spring members may be used to provide between two and eight M-shaped springs, as desired, Figs. 4 to 7 (not shown).
Patent GB-858096-A (GB)
Title: Improvements relating to the reduction of the corrosive attack of gases of combustion on metal
Inventor: GRINDLEY ROBERT
IPC: C23F15/00
Filed: 1957-09-27
Abstract: 858,096. Reducing furnace corrosion. AMBER CHEMICAL CO. Ltd. July 18, 1958 [Sept. 27, 1957], No. 30346/57. Class 51 (1). The corrosive effect of combustion gases is reduced by introducing into the flame or combustion gases a mixture of a finely divided metal, a metal oxide, hydroxide or carbonate and amorphous carbon. A compound containing magnesium, calcium, aluminium, zinc, copper, barium, silicon, chromium, iron, nickel, cobalt, manganese and titanium is mixed with amorphous carbon and a small amount of one of the metals mentioned in finely divided form. Proportions are given for suitable mixtures of magnesium carbonate and/or calcium carbonate, carbon and zinc dust, which may include copper oxide. The powder is introduced into the flame or gases by compressed air.
Patent GB-283919-A (GB)
Title: Improvements in universal joint
IPC: F16D3/74
Filed: 1927-11-12
Abstract: 283,919. Pneumatic Appliances Corporation, (Assignees of Weiland, A.). Jan. 20, 1927, [Convention date]. Universal joints comprise a hollow resilient casing 40 moulded about a pair of metal inserts 15, 16 having a ball and socket conection 17 and formed with interspersed lugs 26, 32 which engage under excessive torque. Each insert comprises a hub 20, radial webs 21 and a rim 22. The webs 21 are reinforced by rear ribs 24 and alternate webs are broadened to form bases 25 for the lugs 26, 32. The rims are formed with bolt holes 27 reinforced by bosses 28. The flexible casing material wholly encloses the inserts, filling the spaces 23 between the webs and extending beyond the bolt hole bosses 28. In assembly, the unit is secured by bolts 52 between flanged outer plates 44, 51 which compress the walls of the casing. The end plate 44 is formed, with a boss 46 secured to the shaft end 13 by a nut 47, the hub 20 of the insert 16 being located by a collar 50. The opposite end plate 51 is formed with a tubular boss 54 into which the hub of the insert 15 fits. The boss extension 54 is internally grooved to engage a fluted coupling spindle 57 which. may be attached to a second, similar, universal coupling to allow for axial play and disalignment of driving and driven shafts. The end of the extension 54 is closed by a packing ring 58 and compression cap 60.
Patent GB-772224-A (GB)
Title: Improvements in and relating to hydraulic packings
Inventor: WATSON THOMAS FRANK
IPC: B30B15/00
Filed: 1955-10-25
Abstract: 772,224. Hydraulic packing. WALKER & CO., Ltd., J. Oct. 25, 1955, No. 30461/55. Addition to 618,970. Classes 122 (1) and 122 (5). In an hydraulic packing the header ring 1 is axially urged to press the lips 3 of a U-section sealing ring 2 apart by a number of coil springs 14 each mounted on a headed pin 12 and compressed between the head 13 of the pin and an annular spring pad 15 tightly fitted in the counterbore 11 of a hole 10 in the header ring, the shank of the pin being slidable in the pad and in the hole 10 and having an enlargement 16 on its end to prevent it passing through the pad 15 when the packing is removed from the gland 4. The enlargement 16 is formed after the pad 15 is mounted on the shank either by peening or by pinching in opposite sides of the shank end. The spring pad 15 may be a dished annular washer, as shown in Fig. 2, having an outer diameter slightly greater than the counterbore 11 or a ferrule 17, Fig. 5, with or without an outer locating flange 18.
Patent GB-1519452-A (GB)
Title: Recovery of gallium
IPC: C01F7/47
Filed: 1974-07-10
Abstract: 1519452 Alumina purification JOHNSON MATTHEY & CO Ltd 1 July 1975 [10 July 1974] 30490/74 Heading C1A [Also in Division C7] Recovery of gallium and alumina from bauxite ore by: (a) dissolving the ore in caustic soda solution under pressure, (b) precipitation of alumina hydrate from the caustic soda solution by reduction of pressure and temperature, (c) subjecting the molten liquor from (b) to a temperature of 60 to 450C and a pressure of 2 to 100 atmos. in the presence of an O 2  containing atmosphere, (d) cementing the Ga remaining in solution by contact with Al. The process in steps (a) and (b) may be repeated by recycling before the liquor is passed to steps (c) and (d).