baber/WOPTO huggingface dataset:
Patent GB-669707-A (GB)
Title: Improvements in or relating to frequency modulation receivers
IPC: H03J7/04
Filed: 1950-02-03
Abstract: 669,707. Frequency modulation. PHILCO CORPORATION. Feb. 3, 1950 [Feb. 5, 1949], No. 2864/50. Class 40 (v). A noise-suppression F.M. receiver comprises a phase discriminator 10, a locked-in oscillator 14 controlled to follow in frequency and in phase quadrature, when at the mean I.F., the I.F. input to the discriminator, by applying both the latter and the controlled oscillations to the phase discriminator 10 and the lowfrequency output of the discriminator to control the frequency of the controlled oscillations by coupling in variable reactance into the tuned circuit of the oscillator through a control valve 20, a low-pass filter 11 located between the discriminator and control valve. The output of the oscillator 14 operates in Class C the valve 20, and the demodulation derived across condenser 30a in accordance with variation of the amplitude of the Class C wave-peaks by the modulation also applied to the valve 20, or the oscillator output may be directly demodulated by a further discriminator. The demodulated output is independent of the filter 11 and is output provided, the latter is just sufficient to maintain the oscillator in synchronism. The filter 11 highly attenuates frequencies at least at and above 1/t c , i.e. approximately 150 kc/s., where t c  is the " capture ' time of the discriminator by noise impulses, i.e. the time during which the amplitude of the ringing in the I.F. stages due to a noise impulse exceeds that of the signal. This time t c , about 7 Á sec., varies only slightly with noise amplitude and number of I.F. stages. It is shown that if the signal I.F. passes through a phase angle in anti-phase with the noise induced ringing in the I.F. stages during this time t c  a retrogression of phase of the signal I.F through 2# radians is produced during this time corresponding to an angular frequency of 2#/t c  radians or frequency in cycles of 1/t c . This produces noise " pops " in the output of the discriminator. The filter may eliminate all frequencies above the useful modulation range. Specification 639,922, U.S.A. Specification 2,332,540 and Proc. I.R.E., pp. 743-751, Oct., 1946, are referred to.
Patent GB-563542-A (GB)
Title: An improved multiple pole automatic switch
IPC: H01H71/58
Filed: 1943-02-26
Abstract: 563,542. Automatic circuit-breakers. LANDIS & GYR SOC. ANON. Feb. 26, 1943, No. 3185. Convention date, March 14, 1942. Addition to 563,528. [Class 38 (v)] The invention of the parent Specification is modified in that the release lever 12, which is freely rotatable on the cross-piece 4 connected to the toggle levers supporting the movable contacts (not shown), is formed as a flat piece with its centre of gravity located below the cross-piece 4, and cranked in one plane so as to define a centre part 12b, eyelets 48 by which it is pivoted to the cross-piece 4, and lugs 12a engaging in V-notches in bearing pieces 37 on the spring toggle-levers 8, 10. A catch 40 rotatable on a pin 41 secured within the button 1 has a shoulder 42 which engages cross-piece 4 to close the breaker when the button is depressed, the breaker being retained closed by hooks 50 engaging the cross-piece. During closure, the spring 45 changes its bearing point on catch 40 to a point above pivot 41 so that, when the operating force is removed and a spring (not shown) tends to return the button, the catch 40 is rotated'so that nose 43 engages under cross-piece 4 and holds the button. When the button is again depressed, surface 44 of nose 43 acting in the opening 49 in lever 12 rotates the latter so as to deflect hooks 50 and also to bear on surfaces 38 of bearing pieces 37 and break both toggles. If either toggle is broken on overload, its associated bearing surface 39 tilts lever 12 which acts on the surface 38 of, and breaks, the other toggle. Indicator.-The catch 40 is formed with " on " and " of " indicating plates 46 visible through a window 47 in the button.
Patent GB-538955-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: G03B42/02
Filed: 1940-02-20
Abstract: 538,955. Cameras for radiography. COX, Ltd., S., and SUTTON, P. G. Feb. 20, 1940, No. 3206. [Class 98 (i)] The film spool of a camera by which X-ray fluorescent screen images are photographed is wound after each exposure through ratchet and pawl or like means actuated by electromagnetic means which is energized by the closing of a switch controlled by the X-ray exposure timing means. As shown, an electromagnet 9 is energized by a switch which is closed by the X-ray timing mechanism on completion of the exposure. The pivoted armature 11 rocks and through a link 14, three-armed lever 16 acted on by a spring 30, link 20, and lever 22 pivoted at 23, moves a rack member 25 which is pivoted to the lever 22 and held in contact by a spring 28 with a ratchet wheel 26 mounted on the take-up spool spindle, which is thus rotated to wind the film in readiness for the next exposure. When the armature 11 has moved to its full extent a screw 32 in it opens contacts 35 and breaks the circuit of the X-ray timing mechanism, which then opens the switch controlling the electromagnet 9 so that the parts return to normal position in readiness for the next exposure. Specification 538,981 is referred to.
Patent GB-589371-A (GB)
Title: Improvements in and relating to supporting racks for cutlery and like articles
IPC: A47G21/14
Filed: 1945-02-09
Abstract: 589,371. Cutlery rests. GREAVES, C. G. T. Feb. 9, 1945, No. 3260. Drawings to Specification. [Class 128] [Also in Group XVII] Supporting racks for cutlery &c. are mounted, e.g., in a receptable such as a drawer in desired relation to each other by means of spikes, mounted in the racks, which can be pressed by hand into the floor. The spikes may be double-ended with an enlargement at the middle and may be roughened, or they may be headed. The racks may be of plastic or mouldable material and the spikes embedded during the moulding process.
Patent GB-1029432-A (GB)
Title: Compounds and preparations for combating undesired plant growth
IPC: A01N37/36
Filed: 1963-01-25
Abstract: Compounds of the formula <FORM:1029432/C2/1> wherein n=2, in which R is chlorine or the methyl or chloro-methyl radical, and X (when R=Cl) represents an iodine atom, the acetylene radical or the group -COOA (where A stands for an alkyl radical of 1-4 C), and (when R= CH3 or -CH2Cl) X also represents Cl or Br, or the methoxy group, are prepared by reacting equimolecular amounts of the appropriate acid or its chloride or anhydride with the appropriate alcohol in the presence of p-toluene sulphonic acid.  A specific compound prepared is b -iodoethyl trichloro-acetate.  Reference has been directed by the Comptroller to Specification 923,051.ALSO:Herbicidal compositions comprise as active ingredient a compound of the formula:- <FORM:1029432/A5-A6/1> in which R is a chlorine atom, a methyl group or a chloroalkyl radical of 1-3C, n = 1-3 or 4, X represents hydrogen or halogen, an alkenyl or alkynyl radical of 1-4C, an alkoxy radical of 1-4C or -COOA (where A stands for alkyl 1-4C) with the proviso that when X is hydrogen, R is chlorine or a chloroalkyl radical of 2 or 3C, or a compound of formula:-  <FORM:1029432/A5-A6/2> and at least one of the following:-a solvent, a solid diluent, a dispersing agent, a wetting agent, an adhesive, a fertiliser or another herbicide or pesticide.  Specified other herbicides are borax and other herbicidal inorganic salts and specified pesticides are pesticidal chlorinated hydrocarbons and phosphoric acid esters. Specified forms are solutions, emulsions, wettable powders, pastes, dusts or granules, which may contain non-ionic, anionic or cationic surface active agents.  Reference has been directed by the Comptroller to Specification 923,051.
Patent GB-1278201-A (GB)
Title: System for determining amount of an element dissolved in a molten metal
IPC: G01N27/26
Filed: 1970-01-23
Abstract: 1278201 Electro-chemical analysis CANADIAN PATENTS & DEVELOPMENT Ltd 23 Jan 1970 [24 Dec 1969] 3329/70 Heading G1N In a solid electrolyte probe of the kind disclosed in Specification 1191222, for the determination of dissolved gas in molten metal, instead of sintering the electrolyte in situ, it is individually formed as a compact e.g. in an automatic pill making machine and sintered before fusing into the silica tube (with at least 1/16 " inset and at least 1/16" projecting). As in the prior Specification the powdered electrolyte is mixed with a fugitive binder together with e.g. 4% of SiO 2  as a hightemperature binder. Several constructions differing slightly in detail are described with reference to Figs.2. 8 (not shown). Figs. 7 and 8 (not shown) include a thermocouple in the electrolyte.
Patent GB-1117014-A (GB)
Title: Process for preparing impregnated catalysts
Inventor: DER FRANCISCUS JOHANNES FREDER
IPC: C07C17/156
Filed: 1967-01-23
Abstract: HCl is oxidized to Cl2 with oxygen or an oxygen-containing gas mixture in the presence of a fluidized catalyst which has been made by impregnating porous solid substances with solutions of one or more catalytically active substances followed by at least partially removing volatile liquid from the impregnated solid substances and then impregnating the partially dried solid substances with a solvent for the catalytically active substances, the solid substances being kept in the fluidized state during each of the impregnation treatments and each impregnation being effected at a temperature which is lower than the boiling-point of the impregnation liquid at the prevailing pressure.ALSO:Oxychlorination of ethylene to 1,2-dichloroethane is effected at 285 DEG  C. using C2H4:HCl:O2 molar ratios of 2.0:4.0:1.05 in a fluidized reactor containing specially prepared catalysts containing (1) CuCl2, DiCl3(Di=didymium), and KCl on SiO2 and (2) conventionally prepared catalysts of similar constitution.  The special preparation involves successive impregnation of porous carriers with solutions of catalysts followed by solvent.ALSO:A process for the preparation of catalysts comprises impregnating porous carriers with solutions of one or more catalytically active substances followed by at least partially drying the impregnated carriers and then impregnating the partially dried carriers with a solvent for the catalytically active substances, the carriers being kept in the fluidised state during each of the impregnation treatments and each impregnation being effected at a temperature which is lower than the boiling point of the impregnation liquid at the prevailing pressure.  The solution and solvent is usually aqueous although alcohols, ketones, ethers, amides or nitriles are suggested alternatives. Typical carriers are a  or g Al2O3, SiO2, pumica and diatomaceous earths.  ExSiO2, pumice and diatomaceous earth.  Examples describe the preparation of KCl, CuCl2 and DiCl3 on SiO2.
Patent GB-703395-A (GB)
Title: Improvements in frequency conversion adapters, converters and the like
IPC: H03D7/10
Filed: 1950-02-11
Abstract: 703,395. Radio receiving apparatus. CROWNE, A. A. J. May 4, 1951 [Feb. 11, 1950), No. 3536/50. 40 (6). [Also in Group XXXVI] A converter tuning unit for adapting a superheterodyne receiver for reception on a range of frequencies over and above that normally provided comprises a switch 1 ... 4 bringing into circuit a number of fixed impedances 10, 36 and 11, 35 respectively which are connected in parallel with the corresponding circuits 21 and 22 of the receiver. A further switch may be provided, Fig. 2 (not shown), and additional impedances, so that two or more extra frequency ranges are obtained, and the unit may be adapted for use with a receiver having a high-frequency stage, Figs. 3 and 4 (not shown).
Patent GB-874446-A (GB)
Title: A switch for monorail tracks
IPC: B65G9/00
Filed: 1959-02-02
Abstract: 874,446. Monorail railway switch points. ALWEG-FORSCHUNG G.m.b.H. Feb. 2,1959 [Feb. 1, 1958], No. 3630/59. Class 104 (2). In a monorail switch in which the top face of a beam-shaped track forms the running surface 16 for the vehicle supporting wheels, each flank forms at least one running track for the vehicle guide wheels, and the switch consists of one or more rigid switch beam sections 1, 2 hinged together at 7 and to the parent track at 6, guide bands 9 for bridging the dihedral angles formed between the guide wheel tracks of adjacent deflected switch beam sections are supported from one or two points 12, 12<SP>1</SP> and 11, 11<SP>1</SP> on each switch beam section, at least one supporting point 12<SP>1</SP> of each guide being a stationary fixed bearing and the remaining supporting points 12, 11 and 11<SP>1</SP> being incorporated in longitudinally slidable bearings which permit the switch beam to be deflected to displace the guide bands 9 into a linear, Fig. 1, or continuously curved, Fig. 2, track section for the vehicle guide wheels. The guide bands 9 are fixed at the free deflectable end of the switch beam and the intermediate supporting points, such as 11<SP>1</SP>, are supported on pins 17 engaged in slots in the guide bands 9. The ends of the guide band 9 near the ends of the parent track 4 are formed with fingers which interengage with fingers on the side bands of the parent track 4 to form a continuous junction. Switches having one and three hinged switch beam sections are described in the Specification.
Patent GB-826453-A (GB)
Title: Improvements in and relating to hoppers
Inventor: RUTHERFORD WILLIAM EDWARD EVAN
IPC: B65D88/30
Filed: 1957-02-04
Abstract: 826,453. Agricultural hoppers. BALLACH Ltd. Jan. 27, 1958 [Feb. 4, 1957], No. 3730/57. Class 78 (1). Hopper 5 runs on wheels 7 carried by frame 6 adapted to be secured to a tractor and has its discharge screw adapted at 11 to be driven by the power take-off of the tractor, the material passing from the hopper to the screw through an opening in the hopper wall. A baffle 14 is inserted above said opening to carry the weight of superposed material so as to prevent choking.
Patent GB-814899-A (GB)
Title: Improved water-repellent finishes
Inventor: EVANS JOHN GWYNANT
IPC: C04B41/84
Filed: 1955-02-08
Abstract: Non-porous surfaces are rendered waterproof by the application of one or more organosilicon compounds and, simultaneously or in either sequence, at least one titanium compound capable of undergoing hydrolysis or decomposition to an oxide or hydrated oxide of titanium or which is a titanium oxide or hydrate thereof. Exemplary of the organosilicon compounds is a mixture containing 60 per cent by weight of trimethylsiloxy end-blocked methyl hydrogen poly siloxane and 40 per cent by weight of a trimethylsiloxy end-blocked dimethyl poly siloxane having a viscosity of 12,800 centistokes at 25 DEG  C.  The titanium compounds used are preferably tetra alkyl or tetra aryl esters of ortho-titanic acid, but titanium salts of fatty acids including the titanium soaps and hydrolysable or decomposable inorganic titanium salts may be used.  The organosilicon compounds and titanium compounds may be applied in solvents, from the vapour phase or as aqueous emulsions or dispersions.  The non-porous base surfaces may comprise rubber and synthetic rubber; polyethylene terephthalate; polyamides; acrylate and methacrylate polymers; vinyl polymers and copolymers; polystyrene; polyethylene; synthetic resins made from formaldehyde and compounds which condense therewith such as phenols, urea or melamine; alkyd resins; casein-formaldehyde reaction products; cellulose esters, e.g. cellulose acetate and nitrocellulose; regenerated cellulose; and oxidized or polymerized linseed oil.  Amongst the silicon compounds which may be used are linear, branched chain or any cross-linked polymers containing silicon-oxygen linkages and, on average, more than one hydrocarbon radical attached to each silicon atom.  The hydrocarbon radicals may be alkyl, aryl or aralkyl and may be replaced by hydrogen.  The polymers may have terminal hydroxy groups or substituted hydroxy groups. Specifications 680,265, 723,989, 740,573 and 809,822, [all in Group VIII], are referred to.
Patent GB-474974-A (GB)
Title: Improvements in or relating to method of and apparatus for treating thread
IPC: D01D10/04
Filed: 1936-02-07
Abstract: <PICT:0474974/IV/1> <PICT:0474974/IV/2> Apparatus for use in the treatment of thread, particularly artificial silk thread, comprises one or more thread-advancing devices or reels, each of which is mounted on a shaft which does not project beyond the reel at one end and is constructed and operated to advance the thread in a large number of generally helical turns towards that end, so that the delivery of the thread is facilitated.  The free end of each reel is disposed adjacent the thread-receiving end of the succeeding reel. The reels may be of the form described in Specification 413,414, [Group IX], and comprise a member 10 rotating with a shaft 12 and provided with integral bars 13 embracing bars 20 carried by a ring member 11 which rotates with the member 10 about an axis which is eccentric to that of the shaft 12 and adjustably inclined thereto, whereby the rotation of the reel with the consequent relative movement of the bars causes the progress of the thread therealong. The reels may be arranged in stepped relationship, as described in Specification 474,973, or as shown in Fig. 1 wherein filaments from a coagulating bath pass from end to end along a reel 1 and in succession along reels 1a, 1b, 1c, reagents being sprayed by distributers 32 and drained from troughs 33.  Specifications 413,413 and 475,024 also are referred to.
Patent GB-868835-A (GB)
Title: Apparatus and method for producing cathode ray tubes
IPC: H01J9/14
Filed: 1959-02-03
Abstract: In the manufacture of a cathode-ray tube screen and grid assembly (see Group XL(a)) the grid wires 182, wound on a mandrel 48, are bonded to the glass surface of the screen by means of a cement applied by a cement <PICT:0868835/III/1> <PICT:0868835/III/2> <PICT:0868835/III/3> vessel 106 mounted to be moved transversely of the wires on a lead screw 96, actuated manually by a chain 100 and handwheel 102, the vessel having an outlet pipe 112 passing through a slot 94 in the face of the mandrel and terminating in a leaf-spring nozzle 114, 116, Fig. 13, by means of which the cement 183 is applied to the wires 182 and screen 180.  The cement is forced out of the vessel 106 by means of air pressure supplied by an air-line 117, Fig. 3.
Patent GB-209615-A (GB)
Title: Improvements relating to folding display boxes of cardboard, paper and the like
IPC: B65D5/52
Filed: 1923-02-09
Abstract: 209,615. Bamber, W. Feb. 9, 1923. No Patent granted (Sealing fee not paid). Boxes made from special blanks and combined with means for displaying advertisements.-In a folding box having a cover which is adapted to be folded back upon itself to form a display flap, the cover 16 has lateral extensions 19 creased transversely in line with the cover crease 17 so that they become folded upon themselves to form lateral extensions of the display area when the cover is erected and which lie folded down at the sides of the box when the cover is closed and increase the strength and rigidity of the box; the extensions 19 may have cut-outs 20 similar to the one in the cover. In the blank shown the lid has a tongue 21 which is tucked behind the contents of the box when the cover is folded and between the contents and the front 11 when the box is closed, the extensions 19 being then tucked inside the ends or held down over them by a band or cord encircling the box; the box is held in the set-up condition by projections 13 from the sides 10 engaging slots 14 in the front 11 and back 12, the flaps 15 extending from the parts 11, 12 and from which the parts 13 are cut, being turned in at the ends of the box. In another blank the lateral extensions of the cover are provided with tongues which engage slots in the ends of the box when the latter is closed, the locking tongues for the body of the box being formed by flaps extending from the front and back and engaging downwards in the slots referred to; in a further form the front and back have flaps which, when the box is erected, are turned inwards against the ends which have extensions which are doubled over the flaps with their ends lying along the bottom of the box.
Patent GB-414751-A (GB)
Title: Improvements in or relating to the treatment of lignocellulosic material and products obtained therefrom
IPC: D21C3/26
Filed: 1933-02-08
Abstract: 414,751. Preparation of cellulose. DREYFUS, H., 22, Hanover Square, London. Feb. 8, 1933, No. 3922. [Class 96.] Lignocellulosic materials such as wood, straw, grass &c. are treated with a dilute solution of an alkali at an elevated temperature and then with a concentrated solution of an alkali at a moderate temperature to obtain pure cellulose for the manufacture of cellulose acetate and the like. The dilute alkali is preferably of ¢ to 1 per cent concentration and the temperature of treatment preferably between 100-140 C. The concentrated alkali is preferably 10-20 per cent concentration and the temperature of treatment preferably between 10-20 C. The dilute alkali treatment is preferably carried out under pressures higher than atmospheric such as between 50 and 150 lbs. per sq. inch, which may be produced by the addition of petroleum ether, or inert gases such as nitrogen or air to the digester. The time of digestion with dilute alkali is from 6-12 hours and wth concentrated alkali 3-7 hours. After alkali treatment the products are advantageously bleached such as by calcium hypochlorite. The whole process of alkali treatment may be preceded by a treatment in the cold with a dilute solution of alkali to remove resins &c. The lignocellulosic material is preferably in divided form, and means such as pre-evacuation of the vessel and stirring are used to ensure thorough penetration of the alkali. In an example spruce wood chips are heated to 145 C. for 12 hours with 50 times their weight of 2 per cent caustic soda solution, cooled and subjected to a concentrated alkali treatment. British Specifications 249,173, [Class 96], 263,938, [Class 2 (ii)], 371,000, 371,001, and French Specification 565,654 are referred to.
Patent GB-1181632-A (GB)
Title: Method of Sticking Shoe Soles to Shoe Uppers and Press therefor.
IPC: A43D25/08
Filed: 1968-01-25
Abstract: 1,181,632. Boots &c. DR. ING. HERBERT FUNCK K.G. 25 Jan., 1968 [25 Jan., 1967], No. 3936/68. Heading A3B. A sole laying press includes a pressure chamber having a flexible membrane which can be stretched by a multiple of its dimensions in the unloaded condition so that when pressure fluid is supplied to the chamber the membrane presses against the sole and at least part of the upper. In a first embodiment (Fig. 1) a press for bonding a sole 16 to a lasted upper 14, 15 having a Louis heel includes a dish shaped base 3 having a last pin 13 and guide rods 1. A hood or bell shaped member 2 is movable on the guide rods 1 by a rod 12 connected to the piston rod of a piston and cylinder device (not shown) and the open end of the hood 2 is closed by a flexible membrane 6. Pressure fluid is supplied to the chamber 8 through inlet 7 and air can escape from the base 3 through holes 17. The membrane 6 presses the sole 16 against the lasted upper and against the breast face of the heel and also presses the upper against the last as shown. In a second embodiment (Fig. 2) for bonding a sole 21 with upstanding margins to a shoe bottom the lasted upper 14<1>, 15<1> is mounted in an apercure 20 in a plate 18 secured to the base 3<1>. A sealing bead 19 projects the shoe upper 15<1> and ensures that the membrane 6 does not pass between the plate 18 and upper 15<1>. The membrane presses the sole 21 against the shoe bottom and presses the upstanding margins of the sole against the side of the upper 15<1>. In a modification (not shown) the membrane 6 is replaced by an inflatable bladder mounted in the hood.