baber/WOPTO huggingface dataset:
Patent GB-513529-A (GB)
Title: Improvements in or relating to telephone transmitters
IPC: H04R21/02
Filed: 1938-04-06
Abstract: 513,529. Transmitters. STANDARD TELEPHONES & CABLES, Ltd., POCOCK, L. C., and LEMAN, H. S. April 6, 1938, No. 10565. [Class 40 (iv)] A mouthpiece assembly for a telephone transmitter comprises a plurality of chambers (including the mouthpiece chamber itself) separated by partitions or membranes through which -the sound waves travel in turn and which is divided acoustically into sections which are designed so that in the equivalent electrical network, they are equivalent to transformers at a given frequency near the upper limit of the band to be transmitted and the junction between the adjacent sections has the same acoustical resistance looking in both directions. As described in connection with Fig. 4, the sections to the right and left of the dotted line are shown to be equivalent to a transformer at a frequency dependent upon the values of the elements forming the section of the network. The values of some of the components are determined by the mouthpiece orifice and the shape, size, &c. of the diaphragm, and the values of the remaining parts are determined according to a frequency near the upper limit of the band to be transmitted. The terminating resistances of the sections are preferably arranged to form a geometrical progression and the impedance transformation ratio is less than 4 : 1. The mouthpiece chamber is designed and dimensioned to have a resonance of the same order, e.g., 3,000 cycles per sec. as the optimum frequency for which the sections of the equivalent network are designed. A preferred form of mouthpiece has a frustum-shaped cavity having an area of at least 15 sq. cms. at the mouth, an axial depth not exceeding 2.5 cms. and a ratio of front area to rear area of at least 4: 1. The transmitters shown in Figs. 11, 12 are generally similar to those described in Specification 494,293. The mouthpieces are shaped and dimensioned in accordance with the principles set forth in the Specification; in addition drainages holes DH are provided in the mouthpiece member MP. Specifications 243,321, [Class 40 (iv)], and 513,352 also are referred to.
Patent GB-399838-A (GB)
Title: Improvements in or relating to the production of yarns
IPC: D02J3/02
Filed: 1932-04-13
Abstract: 399,838. Producing imitation spun yarn from filamentous material. BRITISH CELANESE, Ltd., 22, Hanover Square, London, and TAYLOR, W. I., c/o British Celanese, Ltd., Spondon, near Derby. April 13, 1932, No. 10587. [Class 120 (iii).] A travelling continuous filamentous bundle is caused to describe a surface of rotation, and during its passage through such surface the filaments are cut at intervals along their length, so as to impart a fibrous character to the bundle. The cutting or tearing can be effected by causing the yarn whilst ballooning in cap or ring twisting, to pass in contact with means, such as a circular member internally serrated or roughened, which severs the filaments. The process is preferably carried out continuously with production of artificial filaments, thus filaments 15 from the spinning cabinet 14 pass via the godet roller 18 and balloon guide 19 to the cap-spinning device 20. The filaments are passed through an annular member 25 whose internal edge is serrated. Alternatively, the internal edge of the member 25 may be constituted by the inner peripheries of a circle of toothed wheels, which may be pivoted so that different portions of their circumferences may be turned inwardly so as to present teeth of different pitch to the yarn. In a third type of annular member, Fig. 5, a series of toothed blades 40 are pivoted at 42 on the fixed ring 43, so that by rotating the outer ring 46 by means of the projection 47, the blades close in and reduce the size of the opening through which the yarn passes. The process may be applied to yarns comprising filaments of two or more types. A yarn comprising broken filaments may be combined with any other yarn.
Patent GB-551503-A (GB)
Title: Improvements in or relating to friction clutch plates
IPC: F16D13/64
Filed: 1941-08-21
Abstract: 551,503. Friction clutches. NEWTON, N. B. Aug. 21, 1941, No. 10645. [Class 80 (ii)] A driving plate for a friction clutch comprises a disc engaged by a driving member near its outer periphery and having a resilient element attached thereto so as to space it resiliently from a second and attached disc or from an adjacent part of the clutch. As shown, two discs 16, 17 are separated by spring washers 18 carried by rivets 19 secured to the discs and are carried round with the driving flywheel 10 by pins 12. Friction faces 16a, 17a may be carried by the discs which together with driven clutch plates 14a, 14b, are clamped between the flywheel 10 and a presser plate 13 upon engagement. Specifications 443,608 and 528,773 are referred to.
Patent GB-663171-A (GB)
Title: Television system
IPC: H01J31/56
Filed: 1948-04-16
Abstract: 663,171. Cathode-ray tubes. RADIO CORPORATION OF AMERICA. April 16, 1948 [May 20, 1947], No. 10645/48. Class 39 (i). [Also in Group XL (b)] An image intensifier tube 83 for use in a colour television system (see Group XL (b)) has a photo-cathode 81, formed as a series of mutually insulated strips of photo-electric material connected to form a repeating series of groups of three interdigitated strips (in the case of a three-colour system) and, a fluorescent screen 95 formed as a repeating series of strips of material which fluoresce in the desired component colours, the screen 95 being positioned such that the strips thereof are in the electron shadow area of the corresponding strips of the photo-cathode 81 when a luminous raster, produced on the fluorescent screen 85 under the control of received synchronizing signals, is directed on to the photo-cathode, the strip groups of which are modulated in accordance with received component colour image signals. Instead of separately producing a visible raster and projecting it on to the photocathode an electron raster may be set up directly on the photo-cathode by means of an electron gun assembly formed integrally with the image intensifier tube, Fig. 7 (not shown).
Patent GB-698461-A (GB)
Title: Joists, girders and like load-supporting members
IPC: E04C3/04
Filed: 1951-05-07
Abstract: 698,461. I-section steel girders. THOMPSON BEACON WINDOWS, Ltd., J., and SMART, G. R. May 6. 1952 [May 7, 1951], No. 10650/51. Class 20(ii) An I-section girder is of one-piece construction formed by bending sheet or plate steel so that each flange 15, Fig. 7, is of double thickness at one side of the web 11 and of single thickness at the other side, the double-thickness portions of the two flanges being on opposite sides of the web. At least one flange is bent into channel form to receive a wooden batten 22 which may be secured by nails 23 or by tags punched inwardly from the sides of the channel. The web 11 may be strengthened by transverse corrugations or ribs 33, Fig. 10, and flanged holes 24 provided for the passage of conduits. The girder sections may be butt welded endto-end and the weld bridged by fish plates.. In Fig 11, the end of a girder 25 abuts a girder 26 at right angles thereto and a joint is effected by a strirrup-like bracket 27 which supports the end of the girder 25 and is secured thereto by bolts 28, the bracket having a hook part 29 which engages over the flange of the girder 26. The bracket 27 and girder 26 are secured together by a bolt 30.
Patent GB-1027568-A (GB)
Title: Stabilization of nitrile polymers against discoloration
IPC: C08F20/42
Filed: 1964-03-13
Abstract: Compounds of the formula <FORM:1027568/C2/1> wherein R represents H or methyl, R1 represents a hydrocarbon radical of 3 to 10 carbon atoms free from ethylenic unsaturation and having at least two carbon atoms directly attached to that carbon atom of the radical which is bonded to the oxygen atom, and n is 1, 2 or 3, are prepared by reacting together an amine and ether having the formulae <FORM:1027568/C2/2> in substantially equimolar proportions, e.g. by heating at 95-100 DEG  C.  In the above formulae, R1 may be phenyl, alkylphenyl, isopropyl or t-butyl.  The products are used as stabilizers for nitrile polymers (see Division C3).ALSO:Polymers containing at least 10% by weight of a combined ethylenically unsaturated nitrile are stabilized against discoloration by having incorporated therein a stabilizer of the formula (R-CHOH-CH2)2N-CH2-CHOH-(CH2)n-O -R1 wherein R represents hydrogen or methyl, R1 represents a hydrocarbon radical of 3-10 carbon atoms free from ethylenic unsaturation and having at least two carbon atoms directly attached to that carbon atom of the radical which is bonded to the oxygen atom, and n is 1, 2 or 3.  In the above formula, R1 may be, for example, a phenyl, alkylphenyl, isopropyl or t-butyl radical. The polymers may additionally contain an alkylphenol (including bisphenols and thiobisphenols). The polymers may be homopolymers, copolymers of two or more nitriles, or copolymers of a nitrile with one or more copolymerizable compounds.  Nitriles specified are acrylonitrile, methacrylonitrile, ethacrylonitrile, propacrylonitrile and butacrylonitrile; copolymerizable compounds mentioned are monovinyl aromatic hydrocarbons, e.g. styrene, alkyl styrenes and vinyl naphthalene; alkyl acrylates and methacrylates; acrylamide, methacrylamide and their N-alkyl derivatives; and dialkyl maleates and fumarates.  The stabilizer, and alkyl phenol if used, may be incorporated by blending with the preformed polymer or adding the stabilizer to the monomer charge from which the polymer is formed. In a modification of this latter embodiment, instead of the stabilizer itself, precursors therefor having the formulae (R-CHOH-CH2)2NH and <FORM:1027568/C3/1> wherein R, R1 and n have the meanings stated above, are added to the monomer charge, which is then heated to effect polymerization, the stabilizer thereby being formed in situ. Plasticizers, lubricants, colorants and rubbery polymers may be added to the stabilized compositions.  In examples, acrylonitrile and styrene are copolymerized, in bulk or aqueous suspension, using di-t-butyl peroxide catalyst and in the presence of 1 - phenoxy - 3 - diisopropanolaminopropan-2-ol with or without 2,6-di-t-butyl-p-cresol.
Patent GB-478341-A (GB)
Title: Method of drying wood
IPC: F26B5/04
Filed: 1936-04-14
Abstract: 478,341. Drying wood. SUNDBERG, A. R. April 14, 1936, No. 10727. Void. Convention date, April 12, 1935. [Class 34 (ii)] A method of drying wood consists in heating the wood in a chamber by a flow of heated gas at a temperature below that which would cause case-hardening, stopping the flow of heated gas to allow the wood to reach a uniform temperature throughout, and removing the moisture by subjecting the wood to the effect of a vacuum, the process being repeated, if necessary. The heating of the wood is performed in stages, and the pressure at the outlet side of the vacuum is kept constant irrespective of atmospheric pressure.
Patent GB-1107179-A (GB)
Title: Precision balance
Inventor: MEIER JOHANN
IPC: G01G23/00
Filed: 1967-03-07
Abstract: 1,107,179. Weighing apparatus. MEPAG A.G. March 7, 1967 [Nov. 17, 1966], No.10740/67. Heading G1W. A precision balance comprising a scale pan 12 mounted at one end of a pivotally supported beam 8 is provided with one or more adjustable taring springs 17 and an optical system by which a graduated scale 10 on the beam 8 is projected on to a screen mounted in the frame 4 of the balance, an objective lens 21 of the optical system being mounted at one end of a pivotally supported pendulum member 24 which is so arranged as to be subjected to an additional force when the frame is tilted that for a given load on the scale pan 12 the reading of weight projected by the optical system is constant and independent of inaccuracies in the levelling of the frame 4. The additional force may be provided by a pair of magnetic members 28, 29 mounted respectively on the pendulum member 24 and a beam support column 5 of the frame 4 or by a spring (33) Fig. 3 (not shown) which is tensioned between the pendulum member 24 at its support knife edge 25 and an adjustable nut (35) on the frame 4. The pendulum member 24 may be provided with a counterweight 27 and an adjustable weight 31, and the scale pan 12 may be mounted on a carrier 13 connected to a link member 14 for parallel motion.
Patent GB-747228-A (GB)
Title: Improvements in or relating to anamorphotic optical systems
IPC: G02B13/10
Filed: 1954-04-12
Abstract: 747,228. Anamorphotic optical systems. COLEMAN, K. R., and TAYLOR, TAYLOR, & HOBSON, Ltd. June 23, 1954 [April 12, 1954], No. 10749/53. Class 97 (1). An anamorphotic system comprises two members each consisting of two refracting prism components having their generators parallel to one another and so arranged that an incident ray will be deviated in one sense by one component and in the reverse sense by the other, the prism generators in one member being arranged at rightangles to those of the other member and the members being such that an axial ray incident on the first member which emerges from such member in a direction substantially parallel to its direction of incident will emerge from the second member in a direction substantially parallel to such direction of incidence. The two members may be similar, the component prisms being simple or compound and being arranged, if desired, as described in Specifications 745,315 and 746,194. Fig. 13 shows the system applied to photography or projection, each prism member being formed of two compound prisms the front prisms C<SP>1</SP>, C<SP>2</SP> and C<SP>3</SP>, C<SP>4</SP> being arranged as shown before an objective K and the rear prisms D<SP>1</SP> ... D<SP>4</SP> being similarly arranged with their generators perpendicular to those of the first member. Light from one conjugate plane M<SP>1</SP> is collimated by a lens M before it falls on the prism system. The lens M may be replaced by two simple or compound lenses relatively movable axially to vary their effective focal length, or by the system shown in Fig. 17 comprising two negative lenses P<SP>2</SP>, P<SP>3</SP>, moved within two positive lenses P<SP>1</SP>, P<SP>4</SP> to vary the focal length of the combination. The prism components of each member may be moved angularly with respect to each other to vary the effective magnification of the system, the prisms being connected by suitable gearing or by cable and pulleys to ensure corresponding simultaneous movement of the four components. Numerical data are given, for one example in which each prism component is simple, or one in which each is formed of two prisms cemented together and for one in which the front component of each member is formed of two prisms and the rear component of three prisms.
Patent GB-200592-A (GB)
Title: Improvements in or relating to knot making machines for brush making
IPC: A46D3/08
Filed: 1922-04-18
Abstract: 200,592. Simpson, P. W. April 18, 1922. Brush-making machines.-A device for picking tufts of bristles from a hopper 15, Fig. 1, comprises a channelled or grooved slide 10 fitted with a grooved picking needle 11 and a pointed locking-needle 12, the point of which disengages the groove in the picking-needle prior to the inward movement of the slide 10 through an aperture in the hopper and enters the groove to withdraw a tuft during the outward movement of the slide. The needle 11 may be adjusted to determine the size of tuft required by means of a screw-threaded turn-button 17 engaging a projection on the needle. The locking-needle 12 is connected to a rod 14 provided with a handle 13 and has a limited movement relative to the slide 10 determined by a groove channel therein. The slide is provided with cam surfaces 23 which actuate a hinged forked member 22 so that the latter supports the bristles in the hopper when the slide is in its outward position and is withdrawn from the bristles during inward movement of the slide. A weighted presser-bar 25 rests on the bristles and is adapted to slide between vertical guide-members 26, one of which is hinged to facilitate insertion of the bristles in the hopper, during which operation the other member, provided with a spring catch 27, retains the presser-bar in its highest position. The sides of the box may be adjustable to suit different lengths of bristles, by being carried by two laterally-disposed bars connected by links, to a lever 29, rotary movement of which causes the sides to be moved towards or from each other. In a modified device, shown in Fig. 10, for use in conjunction with a brush-filling machine, the slide 10 is mounted to slide between stops 30. The width of the notch formed by the separation of the needles 11, 12 is determined by an adjustable stop 32b. A regulating screw 37 is provided for adjusting and facilitating the withdrawal of the needle 12. The presser-bar 25 may be arranged to work horizontally by being connected by wire or cord 32a passing over a pulley 33 to a weight or a spring 34. The invention also includes a construction wherein the needles are mounted to oscillate about a common centre.
Patent GB-231684-A (GB)
Title: Improvements in packages or infusers for tea or coffee
IPC: B65D81/00
Filed: 1924-05-01
Abstract: 231,684. Hirschhorn, B. May 1, 1924. Infusers.-Packets of tea to be used directly for making infusions are made by shaping and filling a seamless piece of fabric by means of a die, thus forming a bag, the mouth of which is puckered and closed by a string to which is attached a handle. The fabric 10 is placed on a die 11 having a cylindrical recess 12 into which the fabric is forced by a tubular die 14, through which the tea &c. is introduced. The die 14 is then withdrawn and the mouth of the bag closed by a string to which is attached a handle, forming the packet shown in Fig. 1.
Patent GB-665906-A (GB)
Title: Improvements in or relating to thermionic valve circuits
Inventor: BAKER GEORGE THOMAS
IPC: H04Q1/32
Filed: 1947-07-05
Abstract: 665,906. Valve relay circuits. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Jan. 14, 1948 [July 5, 1947], No. 10870/50. Divided out of 665,821. Class 40 (vi). In a thermionic relay circuit comprising a valve having more than three electrodes the effect of the inductance of the relay windings on the control voltages is reduced by including the relay in the circuit of an electrode to which a control voltage is not applied. The Figure shows a frequency divider or scale of two counter circuit comprising valves VA, VB connected in a trigger pair circuit. The reciprocal coupling is between control and screen grids and the relays A, B are included in the anode circuits. The change-over point of the circuit is made more definite by including the non- linear resistors NLR1, NLR2 in the cross connections.
Patent GB-591181-A (GB)
Title: Improvement in gasification burners
IPC: F23D99/00
Filed: 1945-04-30
Abstract: 591,181. Vapour burners. AKTIEBOLAGET RADIUS. April 30, 1945, Nos. 10884 and 10885. Convention dates, April 22, 1944, and Feb. 16, 1945. [Class 75 (i)] In a soldering lamp or like apparatus the rotation of the fuel control valve spindle 3 to open the valve moves a cleaning needle 4 into the orifice 8 of the vapour nozzle 7 by the engagement of a threaded sleeve 2 slidable on an oblong portion of the spindle 3 with threads on a slidable member 5 carrying the needle 4. The spindle 3 and needle 4 may be parallel or inclined to one another at an acute angle. The needle may be adjustable axially on the member 5.
Patent GB-885876-A (GB)
Title: Fittings for attachment to perforated members
IPC: F16B9/02
Filed: 1958-04-03
Abstract: 885,876. Two-part couplings; mounting terminals. OXLEY, R F. March 26, 1959 [April 3, 1958], No. 10903/58. Addition to 786,862. Class 38 (1). A fitting according to the parent Specification is modified by the provision of a resilient socket 22 in the end of the spigot 10 having the flange which prevents its being forced too far into the bush 11. Such socket may receive the plug portion of another spigot or may have a wire soldered therein. The spigot may have a bulbous end and the enlargements thereon may be knurled (Figs. 6 and 7, not shown). Fig. 5 shows a socket consisting of a plurality of fittings 45 according to the invention mounted on a panel 46 for engagement by a multi-pin plug 47 consisting of a block 48 of P.T.F.E. into which are pressed spigots 49 formed with enlargements 40. A cover block 51 is secured to the block 48 by screws 52, the ends of which project from block 48 to form guide pins. A single spigot 49 may be mounted in a block of P.T.F.E. to form a single contact plug (Fig. 4, not shown). Specification 840,563 also is referred to.
Patent GB-738783-A (GB)
Title: Improvements in or relating to the production of light metal castings
Inventor: SPITALER PAUL
IPC: B22D21/00
Filed: 1953-04-21
Abstract: 738,783. Casting processes. MAGNESIUM ELEKTRON, Ltd. March 18, 1954 [April 21, 1953; Nov. 23, 1953], Nos. 10917/53 and 32419/53. Class 83 (1). In casting light metals such as aluminium and aluminium- and magnesium-base alloys by the slit-gate running system described in Specification 408,153, which is referred to, the slit gate E is wider than the adjoining casting wall A, preferably by 25-75 per cent, and is applied at the thicker wall A of the casting. The necessary risers H, I, J are placed over local heavy sections as near as possible to the gate. One or more slit-gates may be used, and may be parallel or tapered. Chills may be fitted near to or on the lower part of each slit gate.
Patent GB-686852-A (GB)
Title: Improvements in sheet material roofing and siding panels
IPC: E04D3/36
Filed: 1950-05-04
Abstract: 686,852. Roofs. COOKSON, W. March 27, 1951 [May 4, 1950], No. 11048/50. Class 20(iv) A roof is formed from ribbed sheet metal panels C, D the edges of the end ribs of which are formed with coacting plug and socket members E, F held by fixing brackets G secured to the purlins.
Patent GB-1298158-A (GB)
Title: Refractories
IPC: C04B35/01
Filed: 1970-03-09
Abstract: 1298158 Refractories PPG INDUSTRIES Inc 9 March 1970 [10 March 1969] 11109/70 Heading C1J [Also in Divisions B1 and F4] Refractory bricks are protected against corrosion by superficially coating them with a refractory metal oxide powder so that the pores in the bricks become filled. A dry refractory brick assembly is made by filling the joints between individual bricks with the oxide powder. Out of an extensive list of oxides and complex oxides, e.g. phosphates, silicates, zirconates, chromates, aluminates, titanates &c., the preferred examples are SiO 2 , TiO 2 , ZrO 2 , MgO, Al 2 O 3 , mullite (3Al 2 O 2 .2SiO 2 ) and zircon (ZrO 2 .SiO 2 ) or mixtures thereof.
Patent GB-1217852-A (GB)
Title: Continuous filaments of carbon
Inventor: RENDALL MICHAEL
IPC: D01F9/22
Filed: 1967-03-09
Abstract: 1,217,852. Carbon filaments. COURTAULDS Ltd. 8 March, 1968 [9 March, 1967], No. 11131/67. Heading C1A. Continuous filaments of carbon are produced by heating continuous filaments of organic material at a temperature of from 200‹ to 300‹ C. in an atmosphere of nitrogen, air, or air enriched with oxygen, so that the filaments, during the heating, are not subject to bending to curves of radius less than 5 cm., then winding the filaments into a hank or package, and heating in an inert atmosphere to 1000‹ C. The first heating may be carried out continuously, or batchwise with the filaments wound on a former. This heating is continued for from 30 mins. to 4 hours. The filaments resulting from the first heat treatment may be either wound on to a cylindrical former, and the former then removed, or they may be wound into a hank with its ends supported internally, preferably by carbon formers, of radius less than 1À25 cm. The second heat treatment may be carried out for from 30 mins. to 4 hours. The filaments may then be further heated, to effect graphitization, to a temperature of more than 2000‹ C., for from 30 mins. to 3 hours, and the heating from 1000‹ C. to the final temperature may be carried out over 2¢ hours.