baber/WOPTO huggingface dataset:
Patent GB-1189404-A (GB)
Title: Extrusion Apparatus
IPC: B30B11/22
Filed: 1968-02-02
Abstract: 1,189,404. Extruding cavitied products. SCHNEIDER & CO. 2 Feb., 1968 [8 Feb., 1967], No. 5326/68. Heading B5A. An extruded product having a multiplicity of parallel and longitudinally extending cavities is made by forcing material by means of a piston 7 through tubes 8, secured against movement in the extrusion direction by collars 8<SP>11</SP> which bear on bushes 3, through lateral holes in tubes 8 immediately downstream of bushes 3 and then around the closed downstream ends of the tubes. Typical widths of the cavities are between 0À5 and 5 mm. and their cross-sections depend on those of the closed tube ends. The tubes are easily replaceable and, as shown, some tubes 8 have been replaced by tubes 8<SP>1</SP>. Bushes 3 are brazed, soldered or adhesively bonded together to form an apertured plate and this plate is surrounded by a support 4 carrying an annular die 9. The extrudate cross-section may be varied by changing die 9 and/or blocking-off some of the tubes or bushes, e.g. by plates (10), Fig. 3 (not shown), or plugs (11), and a tubular extrudate may be obtained by blocking- off the centrally disposed bushes, Fig. 5 (not shown). Extrudable materials mentioned are ceramics such as clay and curable synthetic resins or mixtures of clay and such resins.
Patent GB-1389632-A (GB)
Title: Gear test apparatus
IPC: B07C5/08
Filed: 1973-02-05
Abstract: 1389632 Testing gear teeth electrically METABOWERKE KG CLOSS RAUCH & SCHNIZLER 5 Feb 1973 [7 March 1972] 5508/73 Heading G1N The accuracy of a gear wheel 4 is determined by mounting it in a fixed support 2 and coupling it to a master gear wheel 5 ironcasted on a movable carriage 3, the lateral displacements of the latter during rotation being measured by a transducer 7 whose inductance is varied by lateral movement of the carriage 3 to modulate an A.C. carrier, which is demodulated to form a D.C. signal representing the distance between members 7 and 3. A second transducer 10 senses the passage of the teeth of gear 4 and produces one pulse per tooth.  The displacement signal from transducer 7 is amplified at 19 and compared at 25, 26 with preset values to determine whether the pitch circle is too large or too small. These excessive values trigger a unit 31 or 32 to light a corresponding lamp 42 or 43. The displacement signal from transducer 7 is also fed to unit 18, together with the pulses from transducer 10. The peak-to-peak value of displacement between pulses is compared with reference values at 23, 24 to energize lamp 40 via trigger 29 for excessive tooth-to-tooth error, and lamp 41 via trigger 30 for a damaged tooth. Trigger 30 may also energize means for marking the damaged tooth. The displacement signal from transducer 7 is also fed to unit 17, and the peak-to-peak value of displacement during revolution, representing total error, is compared at 22 with a reference value, and lights lamp 39 if it is excessive. When there is no output from trigger units 28- 32, unit 27 triggers to light lamp 38 for an acceptable test gear. Each of the error signals may be shown on a meter 21 by selective operation of a switch 53. All the information storage units 17, 18, 22-26 are reset by operation of switch 57.
Patent GB-628407-A (GB)
Title: Improvements in and relating to catalysts
IPC: B01J25/00
Filed: 1947-02-26
Abstract: Cobalt-silicon foraminate catalysts are prepared by treating an alloy in which the ratio by weight of cobalt: silicon is from 30 : 70 to 85 : 15, with aqueous alkali to remove not more than 70 per cent of the original silicon content.  The alloy is prepared from a melt by rapid cooling and broken up into granules between 1/16 and 1 inch.  An aqueous solution containing 5 to 50 per cent by weight of caustic soda is used at 100 DEG  to 130 DEG  C.  If not washed out the alkali may be used as a promoter for the catalyst. The catalysts can be used for hydrogenation, dehydrogenation, hydrogenolysis and reductive amination.  They are regenerated by oxidation and reduction.ALSO:Cobalt-silicon alloys containing cobalt and silicon in the ratio 30 : 70 to 85 : 15 by weight are treated with aqueous alkali at 100 DEG  to 130 DEG C. to remove part of the silicon.
Patent GB-273245-A (GB)
Title: Improvements in or relating to glass furnaces
IPC: C03B5/43
Filed: 1927-02-28
Abstract: 273,245. Hartford-Empire Co., (Assignees of Willetts, P. G.). June 24, 1926, [Convention date]. Linings; hearths.-The walls and bottom of a glass-smelting furnace are lined refractory blocks 2, 3 which are of greater specific gravity than the molten glass and thus are not floated out of place. The blocks may be of the kind described in Specification 266,751, [Class 22, Cements &c.], and may be formed with interlocking corrugations as set, forth in Specification 269,153. The lining 2, 3 is backed by a layer 5 of ordinary refractory material which is surrounded by an outer layer 6 of firebrick. The furnace rests on cross-beams 8 supported on piers 9 and the usual buckstays 10, which are connected by tie-rods 11, support the roof 12 independently of the side walls, angle-irons 13 and skew-blocks 14 being provided for this purpose.
Patent GB-950651-A (GB)
Title: Circuit arrangement for generating voltages of sawtooth waveform
IPC: H03K4/50
Filed: 1961-02-16
Abstract: 950,651. Transistor sawtooth generating circults. FERNSEH G.m.b.H. Feb. 16, 1961 [Feb. 16, 1960], No. 5738/61. Heading H3T. A circuit for generating sawtooth waves of variable amplitude and polarity comprises a transistor having its base connected to a source of pulses, one of its emitter and collector electrodes connected through a load resistor to a source of reference voltage and the other connected to a source of voltage of variable magnitude and polarity with respect to the reference, the resulting pulses across the load being integrated to produce the sawtooth output waves. In the Figure, transistor 9 has its base supplied with negative going pulses from an emitter follower 5, its collector connected to a source of supply adjustable by means of a potentiometer 12 between a positive and negative voltage and its emitter connected to a load resistor 14. Pulses will thus be generated across the'load having an amplitude and polarity dependent upon the setting of potentiometer 12. These are integrated by a circuit 15, 16 to produce sawtooth waves of variable amplitude and polarity at the output 25.
Patent GB-988456-A (GB)
Title: Loudspeaker housing
IPC: H04R1/28
Filed: 1963-04-12
Abstract: 988,456. Loud-speaker enclosures. J. P. DUDOGNON. Feb. 12, 1963 [Feb. 13, 1962] No. 5764/63. Headings H4J and H4X. A loud-speaker housing comprises a chamber having a loudspeaker mounted on one wall thereof with its rear side facing the interior of the chamber and baffles defining a passage of varying cross-section within the chamber such that two ends of the passage are adjacent the rear side of the loud-speaker whereby sound waves entering these ends are damped. A treble and bass loud-speaker 13 and 3 respectively are mounted on a front wall 2a of the enclosure. A passage 4, 5, 9, 7 is defined by the baffles shown, its ends 4, 7 being adjacent the rear side of speaker 3. Breather holes 11 having an adjustable impedance member 12 associated therewith are located in the rear wall 2b of the chamber and a baffle 9a provided with a hole 9b therein directs some of the sound energy present at part 9 of the passage via a reflector (10, Figs. 1, 3, not shown) towards the front of the enclosure. It is stated that the output level is substantially constant over a range of 20-12,000 c.p.s.
Patent GB-365841-A (GB)
Title: Improvements relating to holders for safety-razor blades for use when stropping the blade or when using it as a knife
IPC: B26B5/00
Filed: 1931-02-24
Abstract: 365,841. Holders for safety-razor blades. ARMOUR, A. L., 54, Bewick Road, Gateshead, Co. Durham. Feb. 24, 1931, No. 5814. [Class 30.] A holder for use in stropping a safetyrazor blade having a thickened back edge consists of a handle a of wood &c. slotted diametrically at b to receive the rib or thickened edge c of the blade d. Fixed around the slotted end is a steel &c. tube e slit lengthwise at f, the tube either extending beyond or terminating flush with the slotted end of the handle ; the blade projects through the slit f. The holder carrying the blade may be used as a knife.
Patent GB-679157-A (GB)
Title: Improvements in or relating to power cartridges and their manufacture
Inventor: WARK ROBERT
IPC: F42B3/04
Filed: 1950-03-08
Abstract: 679,157. Gas-generating cartridges and compositions. IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 8, 1951. [March 8, 1950] No. 5838/50. Classes 9 (i) and 9 (ii). An engine-starter cartridge having ignition means in a metal base and loaded with a smokeless powder charge in such forms that there are unoccupied spaces in the charge-containing portion of the cartridge, is provided with a primary ignition charge consisting of a plurality of multi-perforated shapes of porous smokeless powder. Fig. 1 shows a cartridge having a metal base 1 and a paper wall 3 turned over a celluloid closure disc 5. A percussion cap 4 is placed in the base 1 and in a reinforcing cup 2 are multi-perforated discs 7 of porous smokeless propellant. The perforated discs are 0.2 inches in diameter and 0.1 inches thick, and are traversed by seven parallel perforations 9 symmetrically arranged and 0.015 inches in diameter, Fig. 2. The discs are rendered porous by the inclusion in the propellant composition of 1.5 per cent by weight of potassium nitrate. The potassium nitrate passes a 16 mesh B.S. sieve and is retained by a 60 mesh sieve and after formation of the discs is leached out with warm water. After placing the discs 7 in the cartridge, it is loaded with cylindrical pellets 8 of a slow-burning smokeless propellant. In a modification, the cartridge is fired electrically by means of a fuzehead in a rubber-like sheath placed in the metal base 1. The propellant may be nitroglycerine 29 per cent, guncotton 64.5 per cent, diethyl diphenyl urea 2 per cent, mineral jelly 3.5 per cent, potassium nitrate 4 per cent, all parts being by weight. The slowburning composition 8 may include dibutyl phthalate and the guncotton may be nitrocellulose of 12.2 per cent nitrogen content. The percussion cap composition may be mercury fulminate 19.1 per cent, potassium chlorate 33.3 per cent, antimony sulphide 42.8 per cent, sulphur 2.4 per cent, mealed gunpowder 2.4 ' per cent, all parts being by weight.
Patent GB-1494291-A (GB)
Title: Bending and tempering glass sheets
IPC: C03B23/025
Filed: 1975-02-12
Abstract: 1494291 Bending and tempering glass LIBBEYOWENS-FORD CO 12 Feb 1975 5916/75 Heading C1M Glass sheets 15 are moved, while substantially horizontal, through furnace 12, where the glass is heated to substantially its bending temperature, through bending area 13 and then through tempering area 14, the sheets being carried from furnace 12 to bending area 13 on a series of rolls 16 which are of progressively increasing transverse curvature, to prebend the sheets. A passageway may be provided between the bending and tempering areas which is normally closed by gate 40, the gate 40 being opened (by air cylinder 41) to allow each sheet to pass through. After bending in area 13 the sheets may be supported on curved rolls 17. The bending is by means of outline mold 19, which is raised by piston 70 to contact the sheets 15 and shape them by the "Inertia-Gravity" method. The sheets 15 are tempered by chilling fluid from blastheads 20, 21, the first series of blasthead sections 22 comprising tubes 47, and the second series of sections comprising apertured plates. The sheets may be supported in the tempering area 14 by spring-type rolls 18, which comprise a metal coil disposed within a fibre-glass sleeve 36.
Patent GB-952789-A (GB)
Title: Mechanical transmission
IPC: F16H1/32
Filed: 1962-02-15
Abstract: 952,789. Toothed gearing. A. M. MAROTH. Feb. 15, 1962 [Feb. 15, 1961], No. 5929/62. Heading F2Q. A rutating gear 24, which is prevented from rotating by the engagement of peripheral rollers 64 with axially extending slots 68 in the casing 14, is given a wobbling motion by a cam 22 integral with a driving shaft 10, and carries wedge-shaped teeth 70 which are adapted to engage rollers 84 forming circumferentially spaced abutment surfaces on a driven member 26 integral with a driven shaft 12. As shown, there are sixteen teeth 70 and fifteen sockets 80 in the driven member between adjacent sets of rollers 84.
Patent GB-943576-A (GB)
Title: Method of making thread-swaging and fastening screws
IPC: F16B37/12
Filed: 1962-02-16
Abstract: 943,576. Making thread-swaging screws. GENERAL AMERICAN TRANSPORTATION CORPORATION. Feb. 16, 1962 [April 26, 1961], No. 6025/62. Heading B3A. [Also in Division F2] A method of making a thread swaging and fastening screw comprises providing a blank having a head, a cylindrical shank and a tapered frusto-pyramidal front end portion, said portion and shank having at least one flute therein providing one corresponding land thereon, producing a continuous rolled thread on the portion and the shank with a co-operating thread rolling die wherein the thread depth of the end portion is greater than that of the blank flute so that the front thread portion is only partially interrupted by the spaced apart thread flutes therein formed by the blank flute and producing corresponding thread lobes thereon formed in the blank land, wherein each radial section of the front portion at each of said flutes and thread lobes has a truncated crest and a full crest respectively and wherein the shank is uninterrupted so that each radial section thereof has a full crest. A steel blank 10 comprising a head 12, a cylindrical shank 11b and a tapered frusto-conical portion 11a is forged to produce a blank 20 having a cylindrical shank 21b, a frusto-pyramidal front portion 21a and circumferentially spaced flutes 22 with corresponding lands or ribs 23. The blank 20 is thread rolled between a V-thread rolling die to produce a screw 30 having truncated flutes F and lobes L produced by the corresponding flutes 22 and ribs 23 respectively on the front portion 21a and an uninterrupted thread form on the shank 21b. Alternative blank forms, Figs. 4A and 4B, are produced by forging and the V-thread rolled to produce the thread forms 50, Fig. 6A, and 70, Fig. 6B, respectively. The formed screws are subsequently heat treated. The screws 30, 50, 70 are used in workpieces formed from materials such as die-cast zinc, synthetic organic plastic materials e.g. methylmethacrylate, nylon, acetal resin, phenolformaldehyde resin &c. and cast iron respectively. Specification 943,575 is referred to.
Patent GB-175901-A (GB)
Title: Specific gravity meter
IPC: G01N9/26
Filed: 1921-02-23
Abstract: 175,901. Kelvin, Bottomley, &. Baird, Ltd., and Field, M. B. Feb. 23, 1921. Specific - gravity estimating- apparatus.- In apparatus comprising two balance chambers connected to an air-supply source and located at a given vertical distance apart in a tank &c. containing the liquid to be tested, the chambers being connected to a pressure-indicating device, a differential gauge is provided having independent connections to the balance chambers and calibrated to furnish a direct reading of specific gravity. In the form shown in Fig. 1, the chambers 4, 5 having orifices 8, 9 at a fixed distance apart are mounted on a rigid frame 6 suspended by a chain &c. 7 within the tank, and are connected to the differential manometer by pipes 2, 3 which may be flexible to permit vertical movement of the frame 6. In a modification the chambers are constituted by air-bells disposed coaxially around a central open-ended pipe formed with two orifices at a fixed distance apart, the orifices being situated within the air-bells. In a modification of this construction the ends of the central pipe are within the respective bells, the upper end of the pipe passing into the air space of the upper bell which completely surrounds the pipe. The orifices in the central pipe are dispensed with and the wall of the upper bell has an orifice communicating with the tank contents. The lower bell is in communication with the airpump. Specification 17856/13. [Class 123 (i), Liquid-level regulating &c.], is referred to.
Patent GB-608703-A (GB)
Title: Improvements in and relating to centrifugal fans
IPC: F04D29/28
Filed: 1946-02-27
Abstract: 608,703. Centrifugal fans. MACHINEFABRIEK GEB. STORK & CO. N.V. Feb. 27, 1946, No. 6170. Convention date, Feb. 19, 1940. [Class 110 (i)] Aerofoil blades are built up of two sheets 8, 9, a trailing edge piece 10 and plate struts 11. The struts are welded to the sheet 8 and may be spot welded to the sheet 9.
Patent GB-1413353-A (GB)
Title: Clamp
IPC: A61B17/28
Filed: 1973-02-08
Abstract: 1413353 Clamps IMPERIAL CHEMICAL INDUSTRIES Ltd 27 Dec 1973 [8 Feb 1973] 6184/73 Heading B4W [Also in Division E2] A clamp, particularly for securing together hospital towels, includes a pair of jaws 1, 2 having teeth 3 arranged in at least two longitudinal rows on each jaw, the teeth in any one row being spaced apart by gaps 4 and being in transverse register with the gaps in the adjacent row, and the teeth on each jaw meshing into the gaps between the teeth on the other jaw, each tooth being in the form of a triangular pyramid with one side of its base triangle parallel to the longitudinal axis of the jaw, the apex sufficiently sharp to penetrate fabric and located vertically above that side, the resulting vertical faces of the pyramids in adjacent rows facing in opposite directions. The jaws and teeth may be integral and of plastics material.
Patent GB-724960-A (GB)
Title: Improvements in or relating to an apparatus for inflating bicycle tyres
IPC: F04B33/00
Filed: 1953-03-06
Abstract: 724,960. Bicycle tyre pumps. MEHTA, S. S. A. March 6, 1953, No. 6206/53. Class (1). Bicycle tyres are inflated by reverse operation of the driving chain of the bicycle, by means of a pump comprising a cylinder 11 mounted on the frame, and having a connecting rod 14 connected to a crank 16 driven by a sprocket 18 engageable with the drive chain 19. The sprocket 18 is rotatable in a bearing mounted on brackets 21, 22 which are adjustably clamped to the frame whereby the sprocket can be raised or lowered into or out of engagement with the chain 19. In another embodiment the cylinder is pivoted at one end to the frame and the piston rod is connected to the crank and the sprocket is adjustable in a slot in a stay secured to the rear hub axle.
Patent GB-349503-A (GB)
Title: Machines for making baskets or similar receptacles
IPC: B27M3/36
Filed: 1930-02-25
Abstract: 349,503. Making baskets &c. FORRESTER, H. J. C., 88, Chancery Lane, London.-(Saranac Automatic Machine Corporation : Benton Harbor. Michigan, U.S.A.) Feb. 25, 1930, No. 6250. [Class 18.] A machine for making a flat-bottomed basket, Fig. 4, from a web A of scored strips B connected at their centres, Fig. 2, comprises a reciprocating and rotary form 1, a stationary hollow mould 8, rotary means 9 disposed in the mould for pressing the bottom of the basket against the end of the form, a toothed ring 11 rotatably mounted in the housing to engage the outer surface of the basket and gearing in the mould connecting the ring 11 with the rotary means 9. The form 1 is carried by a support 23, a rubber ring 20 being interposed between the end of the form and a shoulder on the support to allow the form to yield a little when the bottom is being pressed between the rotary plate 9 and a flat plate 10 secured to the form ; the edge of the plate 10 is bevelled to the outside taper of the basket. The plate 9 is fixed to a gear 7 disposed in the cover 26 of the mould and geared to the ring 11 through pinions 13, 14 carried by a shaft 12 mounted in the mould. In making a basket the web A is supported on a member 15 between the mould and form which has an inside hoop 16 mounted thereon, and the web is forced into the mould bv the form and bent along the scored lines a. The shaft 4 carrying the plate 9 is then intermittently rotated, the basket being rotated by the plate and the ring 11 and winding on the outer hoops 17, 18, 19 drawn through the usual guides. During the periods of rest of the shaft 4, staples are driven through the hoops and basket by six staplers 2 which are mounted in pairs to operate simultaneously on the hoops ; the completed basket is ejected from the mould by a rod 6 when the form is withdrawn.
Patent GB-402747-A (GB)
Title: Improvements in or relating to electric gas and vapor arc discharge lamps
IPC: H01J61/70
Filed: 1932-03-02
Abstract: 402,747. Glass manufacture. ZADDACH, R., 148, Langhans Strasse, Weissensee, Berlin. March 2, 1932, No. 6277. Convention date, March 3, 1931. Drawings to Specification. [Class 56.] To resist the disintegrating action of sodium, potassium &c., the bulbs of electric discharge lamps consist of a borate glass preferably containing 5-15% aluminium oxide, zirconium oxide, or barium oxide. A silica content of less than 60% may be included in the glass.
Patent GB-762989-A (GB)
Title: Improvements in or relating to attachments suitable for sewing machines
IPC: D05B57/26
Filed: 1954-03-04
Abstract: 762,989. Sewing machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., ROBERTS, M. and WAKEFIELD, G. C. J. March 3, 1955 [March 4, 1954], No. 6308/54. Class 112. [Also in Group XI] An attachment suitable for use in a sewing machine comprises a bobbin holder 8 provided'with heating means 12 and a bobbin case holder 26 provided with heating means 34, whereby a pre-heated bobbin 20 may be removed from the bobbin holder and inserted in a bobbin case 30, whereupon the latter, with the bobbin in it, may be inserted in a shuttle of the sewing machine. The bobbin holder, which is cup shaped, has a hollow central spindle 16 on which the bobbin is threaded and which contains a thermostat element 64 for controlling the temperature of the electrical heating means 12 and 34. The bobbin case holder, which is situated above the bobbin holder, has a semi-circular peripheral wall 28 provided with an overhanging flange 52, and has a base 32 which engages the closed end of the cup-shaped bobbin case. Said closed end has a projection 36 having a face 38 and an undercut portion 39, and also a projection 40 having a face 42. The base 32 has an opening 46 which accommodates the projection 36, a face 48 bounding said opening engaging face 38. Projection 40 enters an opening 49 in the base, face 42 engaging a corresponding face 50. The undercut portion 39 enters a bevelled recess 51 in the base. When the bobbin in use is exhausted, the bobbin case holder is removed from the machine, the bobbin is removed and the case placed in the holder 26. Thread 61 from a bobbin in the holder 8 is then passed through a slot 58 in the bobbin case, under a leaf spring 62 on the latter and finally through a staple 60 on the bobbin case. The bobbin is then transferred to the bobbin case and the latter is inserted in the machine. Specification 410,463 is referred to.
Patent GB-548918-A (GB)
Title: Improvements in ultra high frequency electron discharge devices
IPC: H01J25/04
Filed: 1941-05-16
Abstract: 548,918. Electron-oscillators. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 16, 1941, No. 6351. Convention date, May 16, 1940. [Classes 39 (i) and 40 (iii)] In apparatus of the kind described in Specification 541,477, in which a modulated beam of electrons induces oscillations in a resonant circuit comprising an outer cylinder 42, end discs 43, 44, and an inner cylinder consisting of two sections 40, 41 .separated by a gap, the edges of the ;gap are provided with point terminals 61, 63 at a distance less than the gap, in order to limit the voltage that can be built up. The points are preferably adjustable, being secured by set-screws which can be manipulated through openings in the outer cylinder. The electron discharge tube, with the circuits therefor, the cooling and electron-beam 'focusing means are 'as described in Specification 541,477.