baber/WOPTO huggingface dataset:
Patent GB-990065-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L5/24
Filed: 1962-02-15
Abstract: 990,065. Suction cleaners. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. Feb. 15, 1962 [Feb. 15, 1961], No. 5896/62. Heading A4F. A suction cleaner has a casing 1 of substantially streamlined aerofoil section having a suction inlet 2 at the thinner end of the section, an electric motor 5 and fan 6 at the other end of the section, and a dust filter 13 within the casing 1. Removable cleaning tools 11 may be attached, and the device may be held on a stick handle mounted in the socket 4. The filter may comprise a bag 13 internally supported by a wire frame 20.
Patent GB-1056387-A (GB)
Title: Selector switch, for example for semi-automatic washing machines
IPC: H01H43/02
Filed: 1964-02-12
Abstract: 1,056,387. Selector switches. W. HOLZER. Feb. 12, 1964 [Feb. 12, 1963], No. 5921/64. Heading H2B. In a multiposition rotary selector switch having a member which is movable to a plurality of contact actuating positions from a normal position by rotation in either direction and is returned to the normal position by a spring on release, an additional contact set is provided which is actuated when the member is rotated in one sense from the normal position but not the other. As shown, a disc 31 having a plurality of contact tracks 32 which cooperate with respective fixed contacts 33 in selected positions drives a further disc 39 provided with a slipping clutch 40. Disc 39 is driven with disc 31 until a fixed pin 44 engages one end of a slot 45 in disc 39. This limited rotation of disc 39 is effective in one rotary sense to cause fixed contact 34 to engage a printed contact 48 and in the other sense to cause opening of these contacts. In a modification disc 39 is replaced by two discs coupled together by a pin and slot connection and mounted with a slipping clutch on the same shaft as disc 31. The two discs have slots in their peripheries which are brought into register when disc 31 is rotated in one sense but not the other to actuate a cam follower controlling contacts. In another embodiment the control disc carries a plurality of concentred rails which bear on cam followers. The rails are so shaped that they move the cam followers radially outwardly or inwardly depending on the rotary sense to actuate the direction sensitive contact set. Adjacent the rails are further cam tracks which move the cam followers axially to actuate the position sensitive contact sets. Alternatively the cam followers may co-operate with printed contacts on the disc in the selected positions. In another embodiment the disc has a cam rail which cooperates with a fixed member on rotation in one sense to move the disc axially to actuate the direction sensitive contact set. In an alternative arrangement the disc is given a screw motion in one direction of rotation but not the other.
Patent GB-1448431-A (GB)
Title: Lihgt-crosslinkable polymer and process for their preparation
IPC: C08F220/00
Filed: 1975-02-12
Abstract: 1448431 Light sensitive polymers HOECHST AG Feb 1975 [14 Feb 1974] 5936/75 Heading C3P [Also in Division G2] A light-cross-linkable polymer comprises units of the formula in which R is a hydrogen atom or a methyl group; R 1  is a straight-chain or branched, saturated or unsaturated hydrocarbon radical having from 1 to 3 carbon atoms and may be substituted by cyano, C 1 -C 2  alkoxy, carb- (C 1  to C 2 )-alkoxy, C 1 -C 2  acyl or C 1 -C 2  acyloxy; each of R 2  and R 3  is a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms or a chlorine atom, R 4  is an alkyl group having from 1-4 carbon atoms, a nitro group or a chlorine, bromine or hydrogen atom. In addition further non-light-sensitive ethylenically unsaturated comonomers may be copolymerized into the light-cross-linkable polymers, e.g. alkyl-acrylates or methacrylates. In the examples the light-sensitive monomers used are 1 - methacryloyloxy - 1 - methylnaphthalene- 2 - one; 1 - ethyl - 1 - methacryloyloxynaphthalene - 2 - one; 1 - methacryloyloxy - 1 - propylnaphthalene - 2 - one; 3 - chloro - 1 - methyl - 1 - methacryloyloxynaphthalene - 2 - one; 1 - (2- cyano - ethyl) - 1 - methacryloyloxynaphthalene - 2 - one; and 1 - methacryloyloxy - 1- methyl-1-H-naphthalene-2-one.
Patent GB-1076244-A (GB)
Title: Preparation of hydroxymethylphosphonic acid
IPC: C07F9/38
Filed: 1966-02-10
Abstract: Hydroxymethylphosphonic acid is prepared by reacting phosphorus trichloride with paraformaldehyde and water, the paraformaldehyde being present in an amount from about a stoichiometric quantity to about a 0.5 mole excess, preferably in the presence of HCl. Alternatively, orthophosphorous acid may be used instead of water and PCl3.  The reaction may be carried out under atmospheric pressure in a temperature range between 50 DEG  and 150 DEG  C. A preferred temperature range is between 90 DEG  and 120 DEG  C.
Patent GB-1454851-A (GB)
Title: Method for fixing indica on the surface of an article formed of a thermoplastic polymer
IPC: B41M1/30
Filed: 1974-02-08
Abstract: 1454851 Laminated porous-surfaced plastics sheet KUREHA KAGAKU KOGYO KK 8 Feb 1974 [14 Feb 1973] 5961/74 Heading B5N [Also in Division B6] A laminate in which one surface has an opencell surface is made in Example 6 by hot-pressing sheets of (i) polyethylene containing 60 wt. per cent particulate CaCO 3  filler and (ii) ethylene-vinyl acetate copolymer containing 8 wt. per cent vinyl acetate, and uniaxially stretching in a water bath at 80 C. The opencell surface is inked to produce a picture, and the picture is fixed by melting the surface with a hand roller.
Patent GB-548088-A (GB)
Title: Improvements relating to waterproof connectors for electric conductors
IPC: H02G3/08
Filed: 1941-05-07
Abstract: 548,088. Mechanical couplings for wire sheathing or covering. LINES, W., and LINES BROS., Ltd. May 7, 1941, No. 5963. [Classes 36, 38 (i) and 53] Electric conductors 7, 8 passing through an opening in the cover 2 of a battery box 1 are secured and sealed by passing them through holes in a soft rubber &c. plug 4 integral with a lining 11 for the cover and then compressing the plug into the opening 3 in the cover. A head 9 on the plug is forced through the opening 3 to retain the plug and lining in place. A spigot 13 on the plug carries a cap contact 15 and holds the end of the lead 7 in contact with it, and the lining 11 is compressed between the cover 2 and the rim 12 of the box and holds the end of the lead 8 in contact with the cover.
Patent GB-677327-A (GB)
Title: A filler plug for frictional pyrophoric lighters
IPC: F23Q2/52
Filed: 1949-03-04
Abstract: 677,327. Cigarette lighters. HOORN, P. H. C. V. June 1, 1950 [March 4, 1949], No. 6022/49. Class 75(iii) A filler plug for cigarette lighters is provided with an orifice 2 at one end normally closed by a spring-biassed valve 3, and one or more vent slots 8 or orifices and is screwed into the lighter filling orifice to seal it with the vent-slots positioned within the lighter and the valve-closed end to atmosphere so that by depressing the valve 3 the lighter can be filled without removing the plug, the air displaced by the fuel escaping through the vents 8. To prevent accidental depression of the valve 3 the area around orifice 2 is countersunk.
Patent GB-511863-A (GB)
Title: Improvements in or relating to looms and woven fabrics
IPC: D03D35/00
Filed: 1938-02-25
Abstract: 511.863. Shuttleless looms. SEAL & CO., Ltd., H., and WEBSTER, J. Feb. 25, 1938, No. 6045. [Classes 142 (ii) and 142 (iv)] In weaving elastic fabrics, trimmings, strapping, webs, ribbons &c. wefts from stationary supplies are inserted simultaneously from opposite sides of the loom into the same or a double shed by pivoted or reciprocating weft layers or carriers 15, 15a, which are furnished with spring tensioning and take up devices 17, 18. The weft loops are temporarily retained at the selvages by weft holders, which may comprise bent wire fingers 21, 21a connected to uprights on a horizontal bar 23. This is carried by a cam-controlled lever 30 and has an arm 28 linked to a cam-controlled lever 26, so that the weft holder is moved away from the fell before the beat-up. Weft holders may be arranged to pass through the warp threads at spaced points to prevent the first pick of each weft assuming an arcuate form and may comprise wires secured in grooves in a plate. They may be inserted from above or below and be pivoted to the breast beam. The battens may be suspended and have a long board with several rear apertures or windows for reeds 13 so that several webs may be woven. The weft layers may operate in superposed sheds comprising central rubber warp threads, which do not appear on the surfaces of the fabric, one carrier laying successive wefts in one shed, and the other carrier in the other shed, or otherwise. Means may be used for varying the heights at which the carriers operate, and such carrier may insert several, say four, wefts drawn from separate bobbins. The wefts may extend around warp wires along each selvage and be gradually drawn off them as the fabric is taken up. This may pass under a wire 33. The wefts may pass through porcelain guiding eyes 16 and spring controlled tension eyes 17 on upper and lower carriers on reciprocating wooden rods 19 guided by headed rollers 20, a metal rubbing plate being attached to the lay board behind each rod. Or the carriers may comprise eyed fingers which are reciprocated or swung about vertical pivots. As shown in Fig. 3, the bights of each double pick are located slightly inwards of the selvage.
Patent GB-286203-A (GB)
Title: A handle supporting closure band for vessels
IPC: B65D25/22
Filed: 1928-02-27
Abstract: 286,203. Alvensleben, (nÚe Wagner), F. von. Feb. 26, 1927, [Convention date]. Handles.-A band a, Fig. 1, for attachment to jars and other vessels provided with an external rim or channel at the mouth, is formed with .a number of perforated tongues b adapted to receive a bail handle h, Fig. 3, or to be bent outwardly to serve as handles, bent over to secure the cover in place, or, in the case of vessels arranged superposed as shown in Figs 6, 7, to receive interconnecting hook members i or lashings m.
Patent GB-1529631-A (GB)
Title: Solar cell device having improved efficiency
IPC: H01L31/068
Filed: 1976-02-17
Abstract: 1529631 Solar cells RCA CORPORATION 17 Feb 1976 [7 March 1975] 6137/76 Heading H1K A solar cell comprises a semi-conductor wafer opposed faces of which are respectively coated with oxide layers pierced by aligned sets of apertures, with an electrode contacting the wafer via the apertures on the light-facing face and a reflecting electrode extending over the layer on the opposite face and contacting the face via the apertures. Typically (Fig. 1) the silicon wafer has a flat PN junction 18 within a minority carrier diffusion length of each face and has ohmic electrodes 24, 34 consisting of gold superposed on a thin (100 ) layer of chromium. That on the light receiving face is in the form of a rectangular grid deposited in the apertures of thermal oxide layer 22 and the wafer contacting parts 30 of the reflecting electrode 34 define a grid in register with the first grid. In a modification the wafer is the same conductivity type throughout but has a Schottky barrier forming film on one face. Other electrode configurations, e.g. interconnected concentric rings, are envisaged.
Patent GB-159472-A (GB)
Title: Improvements in and relating to thermionic amplifiers employing resistance couplings
IPC: H03F3/02
Filed: 1921-02-23
Abstract: 159,472. Loewe, S. Feb. 23, 1920, [Con vention date]. Thermionic amplifiers; undesired signals, eliminating or limiting.-In multivalve ther mionic amplifiers of the type in which energy is transferred from one valve to the next by a resistance coupling, the internal resistance of a three-electrode valve is used as a variable resistance coupling. Fig. 1 shows the invention applied to a wireless receiver. Energy received by a frame aerial 1 is amplified by valves 6, 13, which are coupled together by the plate-filament resistance of a valve 8. The resistance of the valve 8 is varied in accordance with the received energy, by controlling its grid potential by means of a transformer 10, the primary winding of which is connected to the grid of the valve 6, whilst the secondary winding is included in the grid circuit of the valve 8. In a modification, Fig. 2, the resistance of the valve 8 is varied at signal frequency by connecting the grid and filament across part of the inductance 14 of an independent oscillating circuit 14, 15, tuned to signal frequency. By this means, interference from disturbing signals of other frequencies is prevented- The device may also be applied to the amplification of signals in wireless and line telephony.
Patent GB-1270830-A (GB)
Title: A-nor-d-homo-steroids
IPC: C07C35/06
Filed: 1969-07-28
Abstract: 1,270,830. Racemic gonenes. STERLING DRUG Inc. 28 July, 1969 [5 Aug., 1968], No. 6199/71. Divided out of 1,270,828. Heading C2U. The compounds dl-3,5,17-trimethyl-5α-gona- 2,13(17) - diene (III), dl - 3#.5,17 - trimethyl- 5α - gon - 13(17) - en - 3# - ol (IIIA) and dl- 3,5,17 - trimethyl - 5α - gona - 3,13(17) - diene (IIIB), of which compounds III and IIIA are claimed per se, are prepared from 2-(7,11- dimethyl - irons,trans - dodeca - 3,7,11 - trienyl)- 3-methylcyclopent-2-en-1-ol (II) by reaction with a strong acid (which may be a protonic or a Lewis acid). When a mixture of products is obtained it may be separated chromatographically. Compound III is alternatively prepared by dehydrating compound IIIA with phosphorus oxychloride in pyridine. (Note: Compounds III, IIIA and IIIB are named in the Specification as dl - 3,17 - dimethyl - A - nor- D - homoestra - 3,16 - diene, dl - 3,17 - dimethyl- A - nor - D - homoestr - 3 - en - 17 - ol and dl- 3,17 - dimethyl - A - nor - D - homoestra - 3,17- diene respectively.) Compound II is described as in Specification 1,270,829.
Patent GB-368511-A (GB)
Title: Improvements in combined mechanical and electric control mechanism for machines
IPC: B23Q16/00
Filed: 1931-02-27
Abstract: 368,511. Combined mechanical and electrical control of machines. SCHOENING, H., 51, Spandauer-Strasse, Borsigwalde, Berlin. Feb. 27, 1931, No. 6207. [Class 80 (ii).] A member for effecting mechanical and electrical control of a machine is movable in a path to effect the mechanical control but is deflected from that path to close electric contacts for effecting the electrical control. As shown a lever b operates mechanical means such as a clutch for forward, neutral, and reverse drives, when it slides in channels a<1>, a2 of a box, and closes electrical contacts f<1>, g<1>, f<3>, g<3>, when it is moved into notches c<1>, c<3>. A spring-pressed stud e holds the lever in the neutral position in the notch c<2> and a buffer h retards the closing of the contacts f<2>, g<2>. In a modification a lever b<1> slides in channels i<1>, k<1>, to effect mechanical control and actuates electrical control through contacts m<1>, m<2> when it is at the ends of the channel k<1>.
Patent GB-1255221-A (GB)
Title: Improvements in or relating to an alarm device and a supervising installation including said device
IPC: G01T7/12
Filed: 1969-02-05
Abstract: 1,255,221. Radiation detection. LA DETECTION ELECTRONIQUE FRANCAISE. Feb. 5, 1969 [Feb. 15, 1968], No. 6224/69. Heading G1A. Radiation incident on a tube detector 1 renders its conductive so that pulses from a generator 6 pass to a counter 10 which counter comprised three flip-flops 11-13 and which applies on signal to all the lines and to "AND" gate 19 when it is full, releasing relay 8 through a thyristor 21 to operate an alarm 23 and interrupting the pulse supply through contact 7. The alarm 23 indicates the presence of radiation which may be nuclear, or ultraviolet from a fire. The counter is reset by a second generator 18 having a different frequency. In a modification, Fig. 3 (not shown) a thyristor is activated by the output from a four stage counter. A system in which a number of alarm circuits are fed from a common pulse generator to operate a common alarm is also described. The pulse generators may comprise a rectifier bridge having a string of Zener diodes across and dipping its output.
Patent GB-327821-A (GB)
Title: Improvements in and relating to the construction of fireproof floors and ceilings
IPC: E04B5/28
Filed: 1929-02-26
Abstract: 327,821. Clare, G. E. Feb. 26, 1929. Flooring-blocks. - Open ended hollow filler blocks 2 are made with sloping and rabbeted ends to fit against and be supported by flanged hollow concrete beams 1.
Patent GB-427058-A (GB)
Title: Improvements in printing with dyestuffs
IPC: D06P1/651
Filed: 1934-02-27
Abstract: Printing with a water-soluble dyestuff is effected with a printing preparation containing urea, a phenol and an alcohol of high boiling point, i.e. of a boiling point above 100 DEG  C. Improved stability of the printing preparation and improved fixation of the dyestuff are thus attained.  The following examples are specified.  (1) Cotton is printed with an aqueous preparation containing the trisazo dyestuff obtainable by oxidation of 4-amino-2-sulphobenzene-azosalicylic acid (cf. Specification 349,609), neutral starch tragacanth thickening, urea, phenol or a cresol, furfuryl alcohol or glycol or amyl alcohol, and chromium acetate, and the printed material is dried, steamed for 8 minutes and finished as usual.  (2) The dyestuff in (1) is replaced by p-aminophenol --> pyrogallol.  (3) Cotton is printed with an aqueous preparation containing the sulphuric acid ester salt of leuco - 4 : 4<1> - dimethyl - 6 : 6<1> - dichlorothio-indigo, starch tragacanth thickening, urea, phenol, furfuryl alcohol, sodium chlorate, ammonium sulphocyanide and ammonium vanadate, and the printed material is dried, steamed for 8 minutes, washed and soaped as usual.  (4) The dyestuff in (3) is replaced by the sulphuric acid ester salt of bromo-1-chloro-2 : 3-naphthindol - 2 : 2<1> - p - methoxynaphthalene - indigo (cf. Specification 289,154, [Class 2 (iii)]).  Specifications 318,469 and 318,978, [both in Class 15 (ii)], also are referred to.  The Specification as open to inspection under Sect. 91 comprises also an additional example in which wool is printed with an aqueous preparation containing Sirius yellow G, tragacanth thickening, urea, phenol, furfuryl alcohol and glycol and the printed material is steamed for 1 hour, washed with cold water and dried.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1124706-A (GB)
Title: Process for the production of improved surface active aliphatic sulfonates
IPC: C07C309/20
Filed: 1967-02-09
Abstract: Detergent compositions containing aliphatic surface-active sulphonates are obtained from aqueous slurry which is produced by reaction of sulphur trioxide with C10-C20 mono-olefinic hydrocarbons, followed by neutralization of the product with strong aqueous alkali at a temperature in the range from 15 DEG  to 65 DEG  C., rapid heating of the reaction mixture under pressure to 110-200 DEG  C., preferably 145-175 DEG  C., and maintaining at said temperature range until substantial completion of hydrolysis. The time interval between neutralization and attainment of the hydrolysis temperature must be less than 10 minutes and preferably less than 1 minute.  The heating to the hydrolysis temperature may be accomplished by introduction of superheated steam, sufficient water being vaporized from the resulting product after hydrolysis to yield a slurry containing at least 43% by weight of aliphatic surface-active sulphonate.  An example of such a composition comprises the sodium salt of the active sulphonate, trisodium polyphosphate, sodium silicate, carboxymethyl cellulose, sodium sulphate and water.ALSO:Aqueous aliphatic surface-active sulphonate slurry is produced by reaction of sulphur trioxide with C10-C20 monoolefinic hydrocarbons, followed by neutralization of the product with strong aqueous alkali at a temperature in the range of from 15 DEG  to 65 DEG  C., rapid heating of the reaction mixture under pressure to 110-200 DEG  C., preferably 145-175 DEG  C.; and maintaining at said temperature range until substantial completion of hydrolysis. The time interval between neutralization and arrival at the hydrolysis temperature must be less than 10 minutes and preferably less than 1 minute.  The heating to the hydrolysis temperature may be accomplished by introduction of superheated steam, sufficient water being vaporized from the resulting product after the hydrolysis interval to yield a slurry containing at least 43% by weight of aliphatic surface-active sulphonate.  The vaporization can be accomplished by a pressure let-down means resulting in flash evaporation of excess water.
Patent GB-471423-A (GB)
Title: Improvements relating to thermionic valve circuits
IPC: H03F1/06
Filed: 1936-03-03
Abstract: 471,423. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. (Western Electric Co., Inc.) March 3, 1936, No. 6416. [Class 40 (v)] An amplifying system for modulated carrier waves is increased in efficiency by providing two parallel amplifying paths, one supplying power to the load only when the carrier voltage is above a normal value, the other supplying power at all carrier voltages but having a flat output characteristic for voltages above the normal. Phasing networks are arranged in one or both paths so that the carrier is in phase quadrature at the respective amplifiers but is brought into phase again before recombination in the load circuit. As shown in Fig. 9, the two amplifiers 1, 2 are fed from adjustable tappings on a potentiometer 9 across the source S of modulated carrier waves, the valve 1 being biassed to platecurrent cut-off point, and the valve 2 being more strongly biassed. A filter section 4, gives a phase shift of 90‹ to the input to valve 2, the plate of which is connected directly to the load resistance R. The other valve 1 has a similar filter section 5 on its output side, so that the carriers are in phase in the load R. When the input voltage exceeds the normal, the grid of valve 1 begins to take current 20 reducing the effective input voltage, and increasing the bias. As the valve 2 begins to deliver current to the load, it modifies the impedance into which the valve 1 is working, and so contributes to the flattening of its output voltage characteristic. The filters 4, 5, may be of the band-pass, lowpass, or high-pass type, and may each comprise one or more sections. Both filters may be associated with the amplifier 1, Fig. 10 (not shown). In Fig. 11, the amplifiers 1, 2 are fed in push-pull from the source S, and the plate circuit of the amplifier 2 is back-coupled through a transformer 20 and phase-shifter 21 to a common branch of the grid circuits ; the effect being that when the carrier voltage is above normal, the feed-back comes into action and opposes the input voltage in amplifier 1 but assists in amplifier 2. The filters 3, 5 of Fig. 11 are such that together they displace the carrier by 180‹, so that the outputs of valves 1, 2 are in phase in the aerial. In the circuit shown in Fig. 12, a degenerative feed-back connection 29 is made from the load circuit 18 to the grid circuit of an amplifier 25 interposed between the source 5 and the double transmission path 24. The phase of the feed-back is controlled by a coil 30 and condenser 31. The load circuit may be connected in series relation with the output circuits of the two amplifiers 1, 2, Figs. 1 and 1a (not shown). The Specification includes an analysis of a typical circuit, and diagram illustrating the output voltages and currents for the respective valves, plotted against the input voltage.