baber/WOPTO huggingface dataset:
Patent GB-1366704-A (GB)
Title: Hollow cool'd blade for a gas
IPC: F01D5/18
Filed: 1972-06-28
Abstract: 1366704 Gas turbine blades ROLLS-ROYCE (1971) Ltd 28 June 1972 [2 July 1971] 31066/71 Heading FIT A hollow blade for a gas turbine engine includes longitudinally extending corrugations in at least a portion of its internal surface and means to direct cooling fluid into the corrugations to form vortices. In one arrangement the forward portion of the blade has corrugations 16 which support at their peaks a sheet metal tube 17 supplied with cooling air through duct 23. The peaks of corrugations 16 are cut away at 22 to form angled slots which enable the air flowing through holes 20, 21 from the interior of tube 17 to flow from one corrugation to the next and thus generate vortices. This air leaves the corrugations through film cooling holes 24. Some air leaves tube 17 through its open leading edge 18 which is braced by struts 19. The rearward blade portion has longitudinal passages 25, 26, 27 with angled inter-connections at alternate ends to define a sinuous cooling air path in which vortices are generated. Passage 27 is connected by passages 29 to a trailing edge slot 30 which is itself corrugated Fig. 4 (not shown). Film cooling holes also extend from the passages. In modifications tube 17 and corrugations 16 extend to the blade trailing edge. Tube 17 may be provided with inclined nozzles to direct cooling air into the corrugations.
Patent GB-849262-A (GB)
Title: Improvements in and relating to analogue computers
Inventor: BAILEY CHRISTOPHER EDMUND GERV
IPC: G06G7/22
Filed: 1955-10-31
Abstract: 849,262. Differential switches. SOLARTRON ELECTRONIC GROUP Ltd. Oct. 24, 1956 [Oct. 31, 1955], No. 31101/55. Class 38 (5). [Also in Group XXXVI] In an analogue computer (see Group XXXVI), the pivoted spring-loaded armature of a relay RE/3 (Fig. 3) carries at opposite ends pawls 33, 34, such that normally the toothed wheel 35<SP>1</SP> is held and toothed wheel 36 is released, and on energization wheel 35<SP>1</SP> is released and 36 held. The wheels are geared respectively to be rotated from the outputs of a differential driven from a motor so that on energization, wheel 36 is stationary and wheel 35<SP>1</SP> is rotated at twice the motor speed to drive cam 38 (Fig. 5) operative to successively open and close contacts 39, 40.
Patent GB-1069387-A (GB)
Title: Improvements in methods of and means for degasifying molten metal by sonic and/or ultrasonic vibrations
IPC: C22B9/02
Filed: 1964-08-04
Abstract: <PICT:1069387/C6-C7/1> <PICT:1069387/C6-C7/2> Molten metal is degasified by sonic or ultrasonic vibrations generated by a mains frequency alternating current, the waveform of which and/or the waveform of a secondary A.C. is/are distorted in order to increase the proportion of harmonics of sonic and/or ultrasonic frequencies generated.  A suitable device comprises a transformer with packs of laminations dimensioned and/or removable to produce the distorted waveform. As shown a transformer core 10 comprises three packs of rectangular ring laminations arranged with their sides 10b overlapping and wound with the primary coil 11.  The secondary is formed by the molten metal in a channel 13 in a ceramic body 12.  The magnetic flux in the core 10, normally 10,000 Gauss, may be increased to about 18,000 Gauss by removal of the arms 10a of the core, whereby the core is saturated and the waveform in the melt is distorted. The channel 13 connects with a cavity (15) in the bottom of a "warm-keeping" ladle Fig. 3 (not shown) having a draw-off pipe (18) for the degasified metal.  The waveform distortion may alternatively be obtained by magnetically preloading the transformer core by an additional, direct current, winding.
Patent GB-953420-A (GB)
Title: Improvements in or relating to optical viewing instruments and more particularly to periscopes
Inventor: STRANG JOHN MARTIN
IPC: G02B23/08
Filed: 1955-11-01
Abstract: 953,420. Periscopes. BARR & STROUD Ltd. July 27,1956 [Nov. 1,1955], No. 31267/55. Heading G2J. In a periscope having telescope system within the casing 3, a lens 4 of the telescope is mounted in a stiff tubular carrier 8 which is located by supports 10 in the fixed part of the periscope casing, and by supports 9 in the bent part of the casing, whereby the movement of lens 4 can be controlled in order to compensate for the tendency of the image to move due to bending of the periscope. The supports 9 may be at different distances along the tube 8 in the fore-and-aft, and athwartships directions to vary the compensation provided in the two directions of bending. A number of modifications of the position of the lens or lenses and the supports are described Figs. 2-12 (not shown). In Fig. 7 (not shown) a saucer-shaped-disc 13 on the tube 8 engages feet 12 on a pivoted-prism mounting to cause the prism to tilt.
Patent GB-921625-A (GB)
Title: Improvements in or relating to keysenders
IPC: H04M1/23
Filed: 1959-09-15
Abstract: 921,625. Press-button retractive switches. TELEFONAKTIEBOLAGET L.M. ERICSSON. Sept. 15, 1959 [Nov. 3, 1958], No. 31474/59. Class 38 (5). [Also in Group XXXIX] A switching device includes a plurality of push-buttons 9, Figs. 1, 2, operable from one side of a mounting plate 10, each push-button when operated displacing a member 2 against the action of at least one spring 13 and operating a switch contact 6 individual to the pushbutton and a switch contact 3 arranged to be actuated by the member 2. Member 2 is a ring and is of insulating material or is covered by insulating material. A core 11 secures mounting plate 10 to a front plate 1. Each push-button shaft carries a spring 12, one end of which bears against the button proper while the other end bears against disc contact 6 which is loosely mounted on the button shaft and rests against an annular support 15 fixed to the button shaft. The free ends of the shafts touch ring member 2 which, when no button is pressed, is held against the mounting plate 10 by three springs 13 carried by posts 14 fixed to plate 10. The contact 3, of bar form, normally connects contacts 4 and 5. On pressing any button 9, its shaft urges the adjacent part of ring 2 away from plate 10 against the action of the nearest spring 13 and breaks connection between contacts 3 and 4. At the same time disc 6 connects contacts 7, 8 associated with the pressed button 9. A11 contacts 4, 5 are in series so that a common circuit is broken on pressing any button 9. Alternatively, by arranging bars 3 so that a connection is made on pressing a button and connecting the pairs of contacts 4, 5 in parallel, the circuit is closed on pressing any button. In a modification, Fig. 3, two springs 13 mounted on posts 14 urge contact wires 16 against contacts 4, 5 and urge ring 2 towards plate 10. At least one connection between a wire 16 and contacts 4, 5 is broken on pressing any one of the buttons 9.
Patent GB-364714-A (GB)
Title: Improvements in or relating to poultry rearing apparatus or brooders
IPC: A01K39/014
Filed: 1930-10-21
Abstract: 364,714. Feeding - appliances for animals. GLOUCESTER INCUBATOR CO., Ltd. and WRENTMORE, G. W., Woodchester Works, Stroud, Gloucestershire. Oct. 21, 1930, No. 31628. [Class 5 (ii).] A feeding means for poultry-rearing apparatus comprises a grid having apertures of different sizes along its respective longitudinal edges, means being provided to suspend said grid in an opening in a side wall of the rearing apparatus so that one or the other longitudinal edge is adjacent a feeding trough. The grid, comprising straight, horizontal wires 5 and wavy or sinusoidal wires 6, 7, 8 is suspended from the frame of the rearing appliance by means of stirrups 2 and rods 3, adjustable on the stirrups by means of nuts 4, the rods being adjustably pivoted to wires 11 fixed to the grid. The grid is thus adjustable as to height, inclination and size of aperture ; and by forming longitudinal slots in the stirrup members the grid may also be adjusted laterally to a small extent. Feeding troughs of the shape illustrated are carried by slides 23 on a shelf 15 having detachable triangular side-members 16. Shutters 28 of metal, which may have windowsof blue glass, are pivoted at 30. The trough may be supported as shown or in the reverse position, or food may be placed between the rear edge of the trough and the ledge 18. Metal strips 27 protect the gaps between the trough and the triangular end members to prevent jamming by scattered food. The rearing appliance may be provided with mesh floor and a dropping pan. According to the Provisional Specification, the grid may be suspended from the stirrups by means of U-shaped members, and one longitudinal edge of the grid may be formed of horizontal wires.
Patent GB-830296-A (GB)
Title: A method of disinfecting potable waters
IPC: C02F1/50
Filed: 1957-10-10
Abstract: Potable waters are disinfected by a method which comprises forming a film of sponge silver upon a finely divided inert carrier material e.g. diatomite, acitve carbon, pumice, and silica, and collecting the material on a coarse, porous framework e.g. a "Cuno" (Registered Trade Mark) micro-filter cartridge, filter plates, bowls or other matrix, to form a porous member having pores of diameter less than 80 microns, preferably between 5 and 10 microns, and passing water to be disinfected through the porous member to cause an exchange reaction between the silver sponge and the sulphydryl groups of bacterial cells in the water. Where diatomite is used, the silver sponge is formed thereon by the reduction of organic silver complexes of high molecular weight, e.g. the Werner complexes.  In the examples porous members are made by infiltrating felted filter cartridges of melamine coated paper fibre with a slurry of silver sponge coated diatomite, and by depositing on a woven nylon filter a mixture of equal volumes of silver sponge coated diatomite with activated carbon dust.
Patent GB-1456784-A (GB)
Title: Fermentative production of citric acid
IPC: C12P7/48
Filed: 1974-07-18
Abstract: 1456784 Citric acid HITACHI CHEMICAL CO Ltd 18 July 1974 [18 July 1973] 31823/74 Heading C2C Citric acid is prepared by a fermentation process using a yeast of species Candida lipolytica or Candida tropicalis in a culture medium using as the main carbon source a purified low iodine value oil, that is one with an iodine value not more than 80, a total moisture and impurity content of not more than 0À2%, and an acid value of not more than 0À2. A neutralizing agent is added in an amount 0À05-0À1% by weight, and additionally during the culturing to a total amount of 10-20% based on the medium. Palm, coconut, palm kernel oils, cocao butter, and Japan wax or mixtures thereof may be used and calcium carbonate or hydroxide may be the neutralizing agent. Conventional nitrogen sources, inorganic salts and organic nutrients are present.
Patent GB-632899-A (GB)
Title: Improvements in or relating to radio and other high frequency power measuring arrangements
IPC: G01R21/01
Filed: 1947-12-02
Abstract: 632,899. Power - meters. MARCONI INSTRUMENTS, Ltd., and WILLIS, D. R. Dec. 2, 1947, No. 31849. [Class 37] An arrangement for measuring high-frequency power comprises a concentric line 1, 2, one of whose conductors (or part of each) is made of graphite or similar high-resistance material, a ring or other contact 10 on the line being connected to lamps 11 which are in one arm of a bridge 15, so that the variation of the resistance of the lamps 15 with temperature is measured to indicate power. Preferably annular conductors 6, 7, insulated from the line, provide capacities 8, 9 which are of such magnitude as to resonate with the inductance of the lamps and their leads at the highest working frequency. Where the inner conductor is of graphite, the ring 10 is replaced by a connection to the'inner conductor through a hole in the outer conductor. The ring or other contact 10 is adjustable along the length of the line to tap off any desired fraction of power. The line 1, 2 preferably terminated by a plug 3 and matches the R.F. transmission line feeding it. The zero of the indicator 21 is adjusted by resistance 20, and is preferably adjusted to give a zero reading with no H.F. input.
Patent GB-1078235-A (GB)
Title: Pesticidal compositions
IPC: A01N25/00
Filed: 1964-08-05
Abstract: Pesticidal compositions useful as scattering baits comprise (a) an organo-phosphorus compound of the formula (I) <FORM:1078235/A5-A6/1> or (II) <FORM:1078235/A5-A6/2> wherein R and R\sv are C1-5 alkyl, R\yF represents H or Me, Z is O or S, and Hal is a halogen atom, preferably Br or Cl, or of the formula (III) <FORM:1078235/A5-A6/3> (b) silica having a specific surface greater than 50 m2/g, and (c) a carbohydrate suitable for ingestion by the pests, e.g. sucrose.  The compositions may contain an attractant, e.g. red dyestuff, a bitter substance, e.g. sucrose octaacetate, an adhesive, e.g. petroleum jelly, and/or conventional antioxidants.
Patent GB-843581-A (GB)
Title: Machine for driving mine galleries
IPC: E21D9/11
Filed: 1958-10-08
Abstract: 843,581. Rotary tunnelling apparatus. STEINKOHLENBERGWERK HANNOVER-HANNIBAL A. G. Oct. 8, 1958. [Oct. 9, 1957], No. 32113/58. Class 85 A tunnelling machine comprises a cutter head rotating about the centreline of a gallery cut by the machine and which can be fed forward relative to a frame which is guided and anchored by lining rings fitted in the gallery. The frame consists of a cylinder 5, arms 4 and supports 3. Inside the cylinder is a tube 6, threaded at one end, to engage an internal thread 7 in the cylinder, and carrying at its other end a cutter head formed of three concentric parts 8, 10 and 11. The tube is splined to a gear 18 which is driven by two motors 22 fixed to the frame. As the cutter head is rotated it receives a positive forward drive from the screw thread 7. Inside the tube 6 is a second tube 25 fixed to the cylinder 5 at the end remote from the cutter head and containing driving gear 28 for rotating and feeding forward a pilot drill 29. The reaction of the cutting head is taken by three props diverging from the rear end of the frame and resting on the flange of an I-section lining ring 1. Each lining ring is spaced from the next by timber distance pieces 2. The props are normal hydraulic pit props 31 supplied from a common pump and fitted with a ball joint 35 at each end and a foot 32 which has a hook which engages the flange of an adjacent lining ring. A conveyer 38 removes the cuttings. In hard material the tunnel is first cut using only the central part 8 of the cutter head and subsequently enlarged by two further operations using the parts 10 and 11 of the cutter head.
Patent GB-923842-A (GB)
Title: Resistive elements
Inventor: SEED GILBERT RAYMOND
IPC: H01C17/065
Filed: 1959-09-21
Abstract: Electrically conductive compositions, constituted by a liquid dispersion of finely divided PTFE and a conductive or semiconductive material, are applied to a PTFE, glass, or ceramic base, allowed to dry, and subsequently heated to sinter the PTFE. The dispersion, preferably aqueous, and preferably of carbon black or graphite, may be applied by spraying, brushing, or silk screen printing, to a base of PTFE which has preferably received prior heat treatment to relieve stresses, which may contain a non-conductive filler, and which may be in the form of flexible tape or sheet.  The dried coating is sintered at 327 DEG  to 400 DEG C., and the process may be repeated for a plurality of further coatings, the final sintering being under pressure in a mould to give a smooth surface.  Alternatively, the insulating base may be of ceramic or glass, and the conductive material may be metal, ferrite, barium titanate, boron carbide, or silicon carbide.ALSO:An electrically conductive layer is formed from a liquid-preferably aqueous-dispersion of finely divided PTFE and a conductive material, by coating the dispersion on a surface (see Group III), drying, and heating to sinter the PTFE.  The conductive material may be graphite or carbon black, metal, ferrite, borium titanate, boron carbide, or silicon carbide.
Patent GB-263198-A (GB)
Title: An improved process for the production of wide-porous active silica
IPC: C01B33/154
Filed: 1926-12-20
Abstract: 263,198. I. G. Farbenindustrie Akt.-- Co. Dec. 19, 1925, [Convention date]. Right to Patent relinquished. Silica.-A silica gel having wide pores is obtained by treating a silica jelly before or during- drying and in any case before contraction is complete, with an electrolyte such as to impart to it a hydrogen-ion concentration pH between 7 and 10. The jelly may be prepared in any suitable way, preferably by way of a neutral or nearly neutral or slightly acid sol, and the electrolyte may be added in the form of a suitably adjusted washing-water. The materials mentioned as initial materials for the production of the gel are soluble or insoluble silicates, zeolites, slags, silicon tetrachloride, or silicon fluoride, and the decomposing agents may be acids, or solutions of metallic salts, in which case the gels may contain metallic oxides or hydroxides. It is preferred to obtain the jelly from a sol of neutral, faintly alkaline, or faintly acid reaction and containing at least 50 and preferably over 120 grams. silica per litre, and salts produced in the reaction are preferably removed by washing. The method of drying is comparatively unimportant and it may be effected comparatively rapidly in a current of air or in vacuo at ordinary or raised temperature or in a current of hot combustion gases. The jelly may be more or less completely purified, with or without pressure, before or after drying or pre-drying or between individual stages of drying, whereupon a further purification may follow, preferably after treatment with water vapour. In the examples, the jelly is produced from sodium silicate, sulphuric acid and ice, the sol being coagulated by heating and stirring. Coagulation may also be effected by heating the sol poured on to sheet metal or into moulds in a furnace, and the jelly may be moulded by stamping. The jelly may be washed until nearly all the salts are removed and the jelly gives a red-violet colour with cresol red, a washing-water giving a redviolet colour with cresol red being preferably used, the pH value being between 8 and 9, and the drying may be effected in a current of air at 150-200‹ C. followed if desired by a higher temperature. Specification 255,863 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) gives the limits of pH as 7 to 13, and contains an example in which the silica jelly is dried at 20-120‹ C. or 150-200‹ C., washed with water and then with 0.006N caustic soda, and dried at 200-600‹ C. This subjectmatter does not appear in the Specification as accepted.
Patent GB-956099-A (GB)
Title: Improved method of making printed electric circuits
IPC: H05K3/46
Filed: 1962-08-22
Abstract: 956,099. Printed circuits. T. L. ROBINSON. Aug. 22, 1962, No. 32298/62. Heading H1R. A printed circuit is made by applying to a carrier a hardenable viscous material, forming at least one opening through said material to said carrier, solidifying said material, coating the face of said material and the wall of said opening(s) with a film of conductive material, masking selected portions of said film with dielectric material, electroplating exposed portions of said film with metal of desired thickness, and removing the dielectric mask, said selected portions of the film, and the carrier. As shown, Fig. 6, a coating 18 of epoxy, polyester, or phenolic resin or similar non-flowing hardenable material is applied by brushing or spraying to a carrier sheet 17 of cellophane, glass &c. Holes 19 are formed in the coating 18 by means of a printing plate (not shown) having protrusions to which the material of the coating adheres; if more than one stroke of the printing plate is needed to remove the necessary material, the plate is wiped clean after each stroke. If a very thin coating 18 is acceptable, the material may be printed on the sheet 17. When the coating 18 has hardened, a metal e.g. Ag film 20 is applied as by spraying to the coating 18 and into the holes 19. A plating resist 22 is then applied where circuit conductors are not required, after which the assembly is electroplated, as with Cu 24. The resist 22 and the carrier 17 are removed, and the unplated portion of metal film 20 is removed by brushing or chemical action. Two of the resulting panels are assembled back to back, Fig. 11, the metal at the bases of the holes in the respective panels being soldered or welded together; alternatively, a single panel may have a second printed circuit formed on its reverse side. If through holes are required in the panel, the bases of the holes are covered with resist before the plating step, and the thin metal film below the resist is subsequently removed. The printing plate may also remove material to form slots and irregular holes &c. and to form a shaped edge to the panel. Fig. 15 shows a more rigid panel made by a coating 50 of resin, preferably containing an inert filler material such as glass fibres, asbestos, ceramic powder, or metallic powder, applied in a thixotropic condition to a carrier 49. Holes in the panel are defined by cylindrical projections 52 on a die 51 which form cores 53 attached only by flashes 54. These cores are removed from the hardened panel to form holes therein. The method of the invention may be used to form three-dimensional circuits.
Patent GB-297600-A (GB)
Title: Improvements in and relating to crankshafts
IPC: F16C3/20
Filed: 1927-11-30
Abstract: 297,600. Marks, E. C. R., (Wyman- Gordon Co.). Nov. 30, 1927. Balancing moving parts by weights.-In six-throw four-bearing crank shafts for internal-combustion engines &c., counterweights 50, 52 are added to the curved webs 41, 46 lying between the outer bearings 20, 21 and intermediate bearings 22, 23 to balance dynamically the shaft and, if desired, a portion of the forces due to the connecting-rod ends. Corresponding counterweights 51, 53 are displaced 180‹ from the weights 50, 52 and are arranged upon the straight webs 43, 44, lying between the bearings 22, 23, to preserve the static balance of the shaft. The centres of gravity of the counterweights 50, 52, lie on lines radiating from the main shaft axis and arranged at an anglo b to a line passing through the axis and perpendicular to a line joining the centres of the adjacent crank pins 30, 31 or 34, 35. The angle b lies approximately between 10‹ and 30‹ and may in a typical case be 15‹. The webs 40, 42, 45, 47 are straight. The counterweights are preferably formed integrally with the crank-shaft in a forging-operation, in which a bar of metal is heated and enlarged at the counterweight position by lateral pressure between relatively reciprocating dies, the throws and weights being then formed by edging-dies and finally dieshaped.
Patent GB-506274-A (GB)
Title: Gas-filled electric incandescent lamp
IPC: H01K1/66
Filed: 1937-11-24
Abstract: 506,274. Two-part couplings. VEREINIGTE GLUHLAMPEN UND ELEKTRIZITATS AKT.-GES. Nov. 24, 1937, No. 32351. Convention date, Nov. 24, 1936. [Class 38 (i)] [Also in Group XI] In a gas-filled lamp with a fuse wire or cutout incorporated in a current supply wire, the fuse wire 8 is housed within the stem tube 2 which is formed into a closed fuse chamber by a disc 12 of insulating- material through which the fuse wire passes to the side wall of the cap 13. The effectiveness of the closure may be increased by sealing over the disc 12 a porous insulating-material such as cap cement 14. The fuse may consist of silvered molybdenum wire, the resistance of which increases with excess of current. The other current supply wire 7, which is connected to the centre contact 15 of the cap, consists of copper, and is insulated by enclosing it within a glass tube 11 attached to the pinch 3 by fusing its upper end thereto. The lower end of the tube 11 is embedded in the cement 14.