baber/WOPTO huggingface dataset:
Patent GB-1425273-A (GB)
Title: Signal translating apparatus
IPC: H04N9/64
Filed: 1973-05-04
Abstract: 1425273 Colour television RCA CORPORATION 4 May 1973 21364/73 Heading H4F A composite colour television signal, which may be derived from a video recording and may be subject to jitter includes an NTSC chrominance signal with a subcarrier frequency of, e.g. 1À53 MHz which has nulls at multiples of the line frequency, and a luminance signal, the intermediate frequency portion of which, which overlaps with the chrominance signal, has nulls at odd multiples of half the line frequency, and is processed to provide a jitter-free chrominance signal at NTSC subcarrier frequency and a luminance signal, which are added together to provide a NTSC signal. The frequency of the intermediate frequency portion of the received signal, separated by band-pass filter 10, is altered to that of the NTSC subcarrier in a modulator 20 receiving a reference signal from voltage controlled oscillator 49, the frequency of whose output is controlled by a phase detector 43 to remove jitter by ensuring that the frequency of the bursts in the output of bandpass filter 30 is equal to that of a stable oscillator 45 of NTSC subcarrier frequency. The output from band pass filter 30 is passed to a comb filter 50 formed by a one-line delay line 51 and subtractor 53 to derive at the output of 53 a jitterfree NTSC subcarrier frequency chrominance signal. The output of subtractor 53 is passed to a combiner 80 and also to a modulator 61 receiving a reference signal from oscillator 49, the output of low pass filter 63 being a "jittering" chrominance signal of 1À53 MHz which is subtracted at 70 from the received composite signal to provide a chrominance-free luminance signal which is passed to combiner 80. In an alternative embodiment (Fig. 2, not shown) the output of modulator 20 is passed to band-pass filter 30 via a vestigial sideband filter which provides the unbalanced carrier from oscillator 49 and the lower sideband thereof. The output of subtractor 50 is subtracted from the vestigial sideband filter output to provide a combed luminance signal which appears as sideband information of the carrier from oscillator 49 which is at a frequency which is the sum of the NTSC subcarrier and 1À53 MHz, a baseband luminance signal being derived by passing this signal to an envelope detector the output of which is coupled via a low-pass filter to combiner 80.
Patent GB-183053-A (GB)
Title: Improvements in or relating to toys for moulding models in sand and the like
IPC: A63H33/32
Filed: 1921-11-08
Abstract: 183,053. Donovan, F. D., and Fox, L. H. Nov. 8, 1921. Buckets and moulds for sand.- Relates to toy y buckets having removable bottoms or patterns for use in moulding sand d "castles," and consists in forming such a pattern a with one or more recesses b corresponding with and accommodating the beam or seams of the bucket.
Patent GB-735857-A (GB)
Title: Apparatus for heating an oven chamber of a baking or cooking oven
IPC: A21B1/14
Filed: 1951-09-11
Abstract: 735,857. Bakers' ovens. PERINA, V. Sept. 11, 1951 [Sept. 11, 1950; Aug. 1, 1951], No. 21401/51. Class 51 (2). The oven chamber M of a baking or cooking oven is heated by a number of independent heating circuits (one is shown in each figure) disposed in parallel planes, one portion B, B<SP>1</SP> of each circuit being arranged within the oven chamber for heating a number of compartments at their bases and tops while a second portion B<SP>4</SP> outside the chamber contains liquid to be heated by electricity or by a hearth W and flues W<SP>1</SP>. In Fig. 1, vertical ducts B<SP>1</SP> within the chamber are interconnected by horizontal pipes B which define the compartments and support baking plates S. An inclined pipe B<SP>4</SP> over the hearth and flues acts as a steam generator. The circuits may form single, sinuous loops as in Fig. 2. In Fig. 5, a lower loop B<SP>4</SP> is connected to an unlooped, sinuous duct of which the vertical portions B<SP>1</SP> lie outside walls forming compartments M<SP>1</SP>, M' through which the horizontal portions B pass. The lowest pipe B lies with a double floor of the lower compartment M<SP>2</SP>. The form of circuit shown in Fig. 1 may also be applied to this last arrangement of compartments (Fig. 3, not shown).
Patent GB-648651-A (GB)
Title: Treatment of cellulose esters and ethers with imidazolidine derivatives to inhibit gas fading
IPC: D06P1/642
Filed: 1948-08-13
Abstract: Substituted imidazolidines are prepared by the following series of reactions <FORM:0648651/IV (b)/1> in which R and R1 are aliphatic, aromatic or heterocyclic radicals.  The first reaction is effected at 20 DEG  to 120 DEG  C. in the presence or absence of an inert solvent; the second reaction may be effected by electrolytic reduction, by means of sodium amalgam or by means of hydrogen in the presence of Raney nickel; the third reaction is preferably effected on the reaction product of the second reaction, at temperatures from room temperature to about 70 DEG  C.  R and R1 may be methyl, ethyl, propyl, isopropyl, butyl, isobutyl, amyl, isoamyl, hexyl, heptyl, dichloromethyl, bromomethyl, a -bromethyl, b -chlorethyl, a a -dichloropropyl, a b -dibromopropyl, a -chlorisopropyl,g - bromisobutyl, cyclohexyl, benzyl, phenyl ethyl, phenyl, naphthyl, diphenyl, chlorophenyl, 2,4-dichlorophenyl, bromophenyl, methoxyphenyl, ethoxyphenyl, toluyl, ethyl phenyl, 2,4-dimethylphenyl, isopropyl phenyl, furyl, thiofuryl, 5-methyl furyl, piperidyl, N-ethyl-piperidyl, quinonyl, quinaldyl, pyrrolyl and indolyl.  The compounds, several of which are specified, must be free from groups inducing solubility in water.ALSO:The resistance of dyeings on cellulose ester or ether fibres to acid fading is enhanced by incorporating, before, during or after dyeing, an imidazolidine free from water-solubilizing groups and having the general formula <FORM:0648651/IV (c)/1> wherein both R's are alike and R and R1 are aliphatic, p  aromatic or heterocyclic radicals.  Suitable compounds specified are 2-furyl-1,3-dibenzyl imidazolidine, 2-phenyl-1,3-difurfuryl imidazolidine, 2-phenyl-1,3-dibenzyl imidazolidine, 2-phenyl-1,3-diethyl imidazolidine, 2-butyl-1,3-diquinaldyl imidazolidine, 2-quinolyl-1,3-dibenzyl imidazolidine, 2-pyrrolyl-1,3-di-(o-methyl)-toluyl imidazolidine, 2-o-chlorophenyl-1,3-dibutyl imidazolidine, 2-methyl-1,3-diethyl imidazolidine, 2 - naphthyl - 1,3 - di - (a  - pyrrolyl methyl) imidazolidine, and 2-(p-bromophenyl)-1,3-di-(p-methoxybenzyl) imidazolidine, and many other alternatives for the radicals R and R1 are referred to.  The process is particularly applied to the treatment of cellulose derivative fibres when dyes with aminoanthraquinone and certain azo dyes.  In examples: (1) cellulose acetate silk is dyed with an aqueous dispersion of 2-furyl-1,3-dibenzyl imidazolidine and 1 - methylamino - 4 - ethylaminoanthraquinone; (2) and (5) cellulose acetate silk pre-dyed with 1,4-di-(monomethylamino)-anthraquinone is treated with an aqueous dispersion of 2-phenyl-1,3-difurfuryl imidazolidine or 2-butyl-1,3-diquinaldyl imidazolidine; (3) and (4) cellulose acetate silk is dyed with an aqueous dispersion of 2-phenyl-1,3-dibenzyl imidazolidine or 2-phenyl-1,3-diethyl imidazolidine and 1,4 - di - (monohydroxyethylamino) - anthraquinone.
Patent GB-1469953-A (GB)
Title: Semiconductor devices
IPC: H01L21/225
Filed: 1974-05-15
Abstract: 1469953 Ohmic contacts for semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 15 May 1974 [18 May 1973] 21492/74 Heading H1K A region of a III-V compound semi-conductor body having a net majority dopant concentration of lower than 10<SP>17</SP> atoms/cm.<SP>3</SP> is provided with an ohmic contact comprising a main component of Al, Ta, Ti or Zr and a second component of Zn, Be, Mg, Cd, Si, Ge, Sn, S, Se or Te, the material selected for the second component being capable of inducing the same conductivity type in the contact-bearing region as the majority dopant thereof. During a heating step following deposition of the two contact elements, e.g. from a common evaporation source, the second element forms a shallow diffused zone in the semi-conductor surface sufficient in depth and concentration to compensate the inversion layer inherently present in such low-doped material. Particular combinations for use with GaAs or GaAs x P 1-x  (x=0À8-1) are Al/Zn, Al/Be or Al/Te, preferred compositions and treatment conditions being specified. When the main component is Ti it is preferably covered with Au. GaP electroluminescent diodes and GaAs Gunn devices are particularly referred to.
Patent GB-517169-A (GB)
Title: Improvements in or relating to electric lamps
IPC: F21V25/12
Filed: 1938-07-20
Abstract: 517,169. Lamp-holders. WALSALL CONDUITS, Ltd., and COURT, R. A. B. July 20, 1938, No. 21495. [Class 38 (i)] A flame-proof lamp construction comprises a body 5 that may be of metal and has a partition 6 across it forming recesses 8, 8a at its ends in one of which 8 the spring plungers 18 for the lamp 9 are arranged, rods 16, that carry the plungers, extending through holes 7 in the partition and terminals 17 on the rods being located in the other recess 8a and enclosed by a cover 24 with a cable inlet 36. The rods and terminals are insulated by moulded-on casings, or by bushes 15 in the holes 7, discs 19 at each side of the partition, and cups 23 surrounding the terminals. The bayonet socket 10 of the holder is flanged and secured by a ring 13 and screws 14 and a cover glass 30 is attached by a ring 29 with a cemented joint 32.
Patent GB-431663-A (GB)
Title: Binder or bandage especially for medical purposes
IPC: A61F13/00
Filed: 1934-07-24
Abstract: 431,663. Elastic woven bandages. FLEMMICH, L., FLEMMICH, W., and FLEMMICH, O., (trading as FLEMMICH'S SOHNE, A.), 43, Webgasse, Vienna. July 24, 1934, Nos. 21659 and 21660. Convention dates, Nov. 7, 1933 and Feb. 23, 1934. [Class 142 (iv)] A binder or bandage especially for medical purposes, comprises a warp of rubber threads 1, Fig. 1, fast to boiling, interspersed with cotton, silk, wool, or like inelastic warp threads 2, the threads 1 and some or all of threads 2 being woven with spaced inelastic weft threads 3, and means being provided to prevent retraction of the rubber threads. As shown, said means comprises closely laid weft threads at the ends of the bandage. The rubber threads may be made by spraying rubber latex as described in Specification 214,615, [Class 70], or may be those known under the Registered Trade Marks "Lastex" or " Lactron." The rubber threads are beamed in separately under tension, and at the edges of the bandage the single thread may be replaced by a pair of weaker threads 4, are introduced from a third warp beam. A fabric of several bandage widths and of indefinite length, dividable into individual bandages, may be produced by introducing pairs of double threads 4 into the warp at intervals corresponding to the width of the bandage and providing closely woven weft portions of double the width shown at bandage-length intervals, the fabric being cut between the pairs of doubled threads and through the closely woven portions. A silk warp thread may be provided adjacent the threads 4 for strength and softness. In Fig. 5 a cotton, silk, or other inelastic crossing thread 4 is provided to hold some or all of the rubber threads, the threads 4 being all on one side or alternately on opposite sides of the fabric as shown ; such a fabric can be cut at any point. The number of weft threads in this construction can be reduced. " Lastex " and " Lactron " threads may be provided alternately, the crossing threads being applied only to the latter threads.
Patent GB-316011-A (GB)
Title: Improvements in or relating to servo control mechanism
IPC: G05B11/01
Filed: 1928-07-26
Abstract: 316,011. Price, A. C., (Curtis, R.). July 26, 1928. Machines and apparatus. - A servo control mechanism, particularly adapted for use in connection with the starter for an electric motor described in Specification 227,431, [Class 37, Electricity, Measuring &c.], is provided with a control valve of the kind comprising co-operating ported rotary valve members, the one rotated by manual means and the other by the driven member. The control valve has an outer casing 18, having diametrically arranged ports 20, 21 communicating by pipes 22, 23 with the opposite ends of an actuating cylinder 7 and with oppositely-arranged ports 24, 26 communicating with a supply of oil under pressure and exhaust respectively. The valve member 17 actuated by the driven member has four peripheral ports 27 - - 30 adapted to maintain communication with the ports in the outer casing, each port being provided with a pair of radial ports situated one at each end. The inner valve member 16 which is actuated by a hand lever 14 has four peripheral ports 39 - - 42 opposite pairs being adapted to bridge adjacent radial ports when the hand lever is moved from its neutral position. The cylinder 7 contains a piston 8 coupled by a rod 10 to an arm 11 mounted on a shaft 2 and adapted to be oscillated between stops 12, 13. The shaft 2 carries a toothed quadrant 3 engaging a pinion on the shaft of a crank 5 connected by a connecting rod 6 to the starter electrodes. The control valve members may be provided with packing grooves and spring catches mav be fitted to hold the hand lever in its neutral positions.
Patent GB-912000-A (GB)
Title: Improvements in or relating to manually or power operated apparatus for stretching or upsetting metal sheet or sections
IPC: B21D11/08
Filed: 1961-06-15
Abstract: 912,000. Upsetting; stretching. ECKOLD, W. June 15, 1961 [June 15, 1960], No. 21754/61. Addition to 839,871. Class 83 (4). Apparatus for stretching or upsetting metal sheet or sections comprising a bottom and a top tool which clamp the sheet between them and effect the upsetting or stretching by an oppositely directed movement of their clamping jaws, said jaws being equipped with pressureplates, as specified in any one of Claims 1 to 7 of the parent Specification, is characterized in that the pressure plates are secured to steel baseplates, projections on the base-plates, or pins passing through holes in the base-plates engage the plastic plates and corresponding recesses in the clamping jaws. Base-plates 1, Figs. 1, 2, have bosses 2 pressed out on alternate sides which engage recesses in clamping jaws and pressure plates. Alternatively, Fig. 3, holes 5 are formed in a base-plate 4 cemented to plastic plates 3 and pins 8 are received in these holes and in recesses 7 in clamping jaws 6. In a further embodiment, Fig. 6, segments 10 are pressed out alternately in opposite directions in an annular portion of a base-plate 9. The pressure-plates may be cast on to the baseplates.
Patent GB-1300330-A (GB)
Title: Digital pulse identification system
Inventor: DIXON BROOK
IPC: H04L27/148
Filed: 1970-05-06
Abstract: 1300330 Digital transmission frequency shift systems ACRODYNE Inc 6 May 1970 [19 June 1969] 21915/70 Heading H4P  A F.S.K. system has first and second sources of frequency shifted mark-space signals passing through one of two channels, one passing a high and low frequency different from the high and low frequency of the other, with a pair of band pass filters each selectively coupled by a manual switch to the channels and to a digital discriminator for identifying mark and space pulses. The discriminator receives square-wave mark-space pulses P1 which are passed through an inverting pulse former 70 to produce pulses P3 (see Fig. 4, not shown) which are passed through a monostable multivibrator 72 to produce pulses P4 which are applied to a comparator gate 74 and also through an inverter 80 to gate 78 also receiving pulses P6 from pulse former 76. The gate outputs are connected through reset gates 82 to readout gates 84. The time occurrence t2 of pulses P6 is compared with pulses P4, P5. If a trigger pulse occurs during the time t1-t3 of a pulse P4 this indicates one frequency for example a mark, and gates 82 are set so that gates 84 deliver a corresponding signal. If a pulse P6 occurs at time t2<SP>1</SP> subsequent to time t3, or between times t3<SP>1</SP>, t1<SP>1</SP> when the multivibrator is off as indicated by pulses P6<SP>1</SP>, this indicates a space frequency the corresponding output from gates 84. Thus the length of a multivibrator pulse with respect to trigger pulses P6, P6<SP>1</SP> determines whether input to discriminator (50), Fig. 1 (not shown), is a mark or space. The discriminator output may be applied to a Teletype receiver (56). The significance of mark and space signals may be reversed.  The arrangement may be coupled via a telephone hand-set (11, 52), Fig. 1 (not shown), to a computer read in/out equipment (12, 54) also to a Teletype machine (28, 56).
Patent GB-1093920-A (GB)
Title: Rug display rack
Inventor: RADEK JOHN RICHARD
IPC: A47F7/16
Filed: 1966-05-17
Abstract: 1,093,920. Displaying sheet material. READY METAL MANUFACTURING CO. May 17, 1966, No. 21968/66. Heading A4T. A device supporting and displaying sheet material, e.g. rugs, comprises a fixed hanger in the form of an inverted U-shaped track 18 in which slides a slider 23 carrying a holder 27 comprising a pair of elongated wire frame members 30a, 30b hinged at the end 45 and releasably latched together by a screw device 56 or by a sprung hook at the other end to clamp the sheet edge between the members. Cooperating stops 70, 72, 82 limit sliding movement and gravity stop 82 allows the holder the slide in or, by manually raising it, to slide completely out. Several devices may be incorporated in a wall cabinet. Frame 30b may be bowed and frame 30a carry horizontal tongs to improve clamping.
Patent GB-588263-A (GB)
Title: Improvements relating to liquid filled electrical apparatus
IPC: H01F27/14
Filed: 1944-11-08
Abstract: 588,263. Pistons. BRITISH THOMSONHOUSTON CO., Ltd., and MELVILLE, W. S. Nov. 8, 1944, No. 21974. [Class 122 (i)] [Also in Group XXXV] A piston comprises a flanged metal plate 9, resilient rings 11 spaced by a rigid ring 12 and a flanged ring 13 secured to the plate 9 by screws 14 to force the rings 11 into contact with the cylinder walls.
Patent GB-722471-A (GB)
Title: The preparation of proportioned vapour mixtures by the evaporation of liquids or slurries
IPC: C01G23/02
Filed: 1952-09-01
Abstract: Gaseous mixtures which contain the constituents thereof in predetermined proportions are obtained by preparing a liquid mixture or a slurry of the constituents in the required proportions, and transferring succesive portions of the liquid <PICT:0722471/III/1> mixture or slurry onto a surface heated to such a temperature that complete and substantially instantaneous volatilization of the successive portions takes place thereon.  The method is particularly suitable for obtaining titanium tetrachloride vapours containing small but controlled amounts (1 to 2 per cent) of other metallic halides, such as the chlorides of aluminium, phosphorus, silicon, antimony or tin; the titanium tetrachloride vapours being then decomposed to titanium dioxide pigment.  A homogeneous mixture of 99 parts of titanium tetrachloride and 1 part of silicon tetrachloride is prepared in mixing tank 11, which is provided with separate inlets through which the required proportions of the two constituents, measured either by weight or by volume, are supplied from storage tanks 14 and 15.  The homogeneous mixture is allowed to flow in the form of drops through outlet 18 onto surface 19, which is heated to about 250 DEG C. by electrical element 20 and is enclosed in thermally-insulated vaporization chamber 21.  A continuous and constant-proportioned mixture of vaporized TiCl4 and SiCl4 is thereby obtained; and is withdrawn through conduit 23.  The gaseous mixture is oxidized to produce titanium dioxide pigments.
Patent GB-388045-A (GB)
Title: Improvements relating to the treatment of water, employed in boilers, evaporators and other systems, for the purpose of preventing scale formation
IPC: C02F5/08
Filed: 1931-08-04
Abstract: In evaporators the formation of scale due to the heating and evaporation of the water is reduced, and the solid content of the water maintained constant, by continually withdrawing water at a definite rate, filtering, returning a definite fraction of the withdrawn water, and supplying fresh feed water to maintain the water level constant.
Patent GB-930765-A (GB)
Title: Improvements in coating compositions and planographic printing plates
IPC: B41N1/14
Filed: 1961-06-19
Abstract: Paper having planographic properties is produced by coating with an aqueous composition comprising deacetylated chitin (chitosan), a cross-linking agent, and an inorganic pigment.  The coated composition is dried and cured, optionally in the presence of a catalyst.  The cross-linking agent may be glyceraldehyde, N,N1-ethylene dimethylol cyclic urea, diphenolic acid-formaldehyde, trimethylolphenol, tris-(hydroxy methyl) nitromethane, urea-formaldehyde, phenol-formaldehyde, melamine formaldehyde, or glyoxal.  The pigment may be colloidal silica, barium sulphate, titanium dioxide, kaolin, or a mixture of kaolin and silica in a ratio of 1-4 to 1.  The silica may have a particle size of 7-30 millimicrons.  The catalyst may be zinc acetate, chloride, phenol sulphonate, sulphamate, or silicochloride, or alum.  The viscosity of the composition may be 200 centipoises. The pH may be adjusted to 4-5 by the addition of acetic acid.  The ratio of pigment to chitosan may be 3-6 to 1.  The ratio of cross-linking agent to chitosan may be 1 to 1-10.  2-10 lbs. of the composition per ream of 3,300 sq. ft. of base sheet may be applied.  The coating may be dried at room temperature or 110 DEG -180 DEG F.  Curing may be effected at room temperature or 300 DEG -350 DEG F. for 2-50 seconds.  Examples are given.
Patent GB-907652-A (GB)
Title: Improvements in or relating to table-tops
Inventor: JONES NORMAN BERTRAM
IPC: A47B13/08
Filed: 1960-06-24
Abstract: 907,652. Table tops. WOODMET Ltd. May 2, 1961 [June 24, 1960], No. 22132/60. Drawings to Specification. Class 93. A table top or like surface e.g. of a bar or counter is covered with rectangular, triangular or other tiles of non-corrosive or corrosionresistant metal, two or more distinctively coloured and/or patterned sets of such tiles being bonded to the underlying surface in alternating or other arrangement. The tiles may be formed from aluminium sheet with or without an embossed marking rolled into them, may be coloured by anodising or may bear a pictorial representation or legend by printing. The table top may be formed from sheet metal and provided with a dependant marginal flange, a narrow width of which is exposed round the tiled area, and an angle section strip being secured to the flange so as to cover the margin and to lie flush with the tiles.