baber/WOPTO huggingface dataset:
Patent GB-1082833-A (GB)
Title: Improvements in and relating to prop assemblies such as are used in mines
IPC: E21D23/04
Filed: 1964-09-03
Abstract: 1,082,833. Advancing mine roof suports. R. L. REDHABER. Sept. 3, 1964, No. 36148/64. Heading E1E. An advancing prop assembly for mine roofs (Fig. 1) includes two base members A, B resting on the floor and each carrying roof support props C, a double-acting ram G to displace slidingly each base member A, B in turn parallel to their adjacent faces and perpendicular to the props, first guide means D-rails 34, 34-being carried by the base member A above second guide means-rails 26, 26-carried by it, and two laterally spaced mutually parallel bars F engaging at the ends with the first and second guide means respectively to form therewith, a deformable and permanently linked parallelogram structure between the base members A, B. The guide means D is joined to the base member A carrying it by a nut and bolt 16, 19 carrying a spring 17 and attached by a part 20 to a plate 23 forming an angle iron with a plate 32 to which the guide rails 34 are welded. Whereas the above guide means are rectilinear, in a modification the inner contour of the rails 34 of the means D, which are spread apart as shown, has an inflection point 50 (Fig. 12), so that the portion 51 of the means D is offset towards the outside. When the shaft F is in the outer position, the member B is thus slightly inclined to the member A.
Patent GB-448937-A (GB)
Title: Packing for photographic plates
IPC: G03C3/02
Filed: 1934-12-17
Abstract: 448,937. Packing photographic plates. 1. G. FARBENINDUSTRIE AKT. - GES., Frankfort-on-Main, Germany. Dec. 17, 1934, No. 36154. Convention date, Dec. 20, 1933. [Class 98 (ii)] Thin paper, cardboard, metal, &c. separators inserted between the edges or corners of a pile of sensitive plates to prevent contact between the emulsion layer of one plate and the emulsion layer or glass surface of a superimposed plate are provided on one or both sides with bosses, channelling, &c. to reduce the area of contact with the emulsion layer. The separators may comprise more than one layer, held together by the embossing or channelling, and if of paper, may be stiffened by varnish &c. The bosses &c. may comprise applied protuberances such as resin grains. Fig. 1 shows the usual U- shaped separator which embraces the edges of two plates placed back to back, bosses 2 being provided on both sides. Fig. 2 shows an edge separator similarly embossed. Applications of the invention to the packings described in British Specifications 372,925 and 379,424 are described, and it is stated that it may also be applied to the packings described in German Specifications 556,007 and 560,423, in which plates are separated by cardboard strips which extend beyond the plates at each end and are deeper at the extensions by the thickness of a a plate.
Patent GB-1011481-A (GB)
Title: Improvements in or relating to thermoplastic moulding compositions
Inventor: GORDON ROY ROBERT
IPC: C08L95/00
Filed: 1960-10-21
Abstract: A thermoplastic moulding composition comprises a mixture of 30-70% by weight of coal tar pitch with a fibre-reinforced polymeric thermoplastic material compatible with pitch, the thermoplastic material being finely divided prior to mixing so that it will pass through a 1/2 -inch to 1/16 -inch B.S.S.  The mixture may also include non-fibre reinforced polymeric thermoplastic materials, e.g. nitride rubber, and plasticizers and stabilizers.  In Example (1) scrap P.V.C. conveyer belting was shredded in a rotary cutter and mixed with pitch, polyvinyl chloride polymer, tricresyl phosphate and white lead.  In Example (5) scrap P.V.C. belting, shreaded as in Example (1), was mixed with pitch and petroleum bitumen and moulded in a compression mould.
Patent GB-1018119-A (GB)
Title: Improvements in or relating to 3,4-benzoaporphine and derivatives thereof
IPC: C07D221/18
Filed: 1963-09-13
Abstract: The invention comprises compounds of the general formula <FORM:1018119/C2/1> wherein R is hydrogen, or C1-C4 alkoxy; R1 is hydrogen, C1-C4 alkoxy or with R is methylenedioxy; R2 is hydrogen, C1-C4 alkoxy, alkyl (C1-C3) or benzyl; and pharmaceutically acceptable acid addition and quaternary ammonium salts thereof; and-the preparation thereof by cyclization of a 1-(11-amino-21-naphthyl methyl) - 2 - alkyl (or benzyl) - 1,2,3,4 - tetrahydroisoquinolin dihydrochloride optionally followed by catalytic debenzylation if R2 is benzyl.  The 1 - (11 - amino - 21 - naphthylmethyl) - 2 - alkyl - 1,2,3,4 - tetrahydroisoquinolines are prepared by reduction of the quaternary salts of the corresponding 11-nitro-3,4-dihydro compounds or the corresponding 1-(11-nitro-21-naphthal) - 2 - alkyl - 1,2,3,4 - tetrahydroisoquinoline.  The above nitro compounds are prepared, respectively, by cyclization of an amide of formula <FORM:1018119/C2/2> followed by quatermization, or by condensation of 1-nitro-2-methyl-naphthalene with an appropriate quaternary isoquinoline.  The amides of the above formula are prepared by reaction of an appropriate amine with an appropriate acid chloride. Pharmaceutical compositions comprise a compound of the first general formula above or a pharmaceutically acceptable acid addition or quaternary ammonium salt thereof, and an inert diluent, the said compositions having antipyretic and central nervous system depressant activity.  Salts specified include those with ascorbic, salicylic and theophyllineacetic acids and with 8-halotheophyllines.
Patent GB-851715-A (GB)
Title: Moisture-resisting insulating material and method of making the same
IPC: H01B3/30
Filed: 1956-11-28
Abstract: 851,715. Electrical insulating materials. GENERAL ELECTRIC CO. Nov. 28, 1956 [Nov. 29, 1955], No. 36410/56. Drawings to Specification. Class 140. Electrical insulating material having high dielectric and mechanical strength, being stable at high temperatures and resistant to moisture, comprises a sheet of insulating base material impregnated with an organic binder resin selected from acrylic resins, phenolic resins, epoxy resins, and the reaction product of an unsaturated alkyd resin and a vinyl monomer, such resin imparting high dielectric and mechanical strength to the material, the impregnated base being enveloped with a coating of an organopolysiloxane. The base material may be single or multiple ply and may comprise asbestos sheet, mica sheet, glass fibre, pressboard, kraft, rag or linen paper or other cellulosic material. Specified acrylic resins are polymers and copolymers of methyl and ethyl acrylates, alphamethyl acrylates and methacrylates. Suitable phenolic resins are the condensation products of formaldehyde with a phenol, e.g. ordinary phenol, cresols, xylenols, and alkyl-substituted phenols, or mixtures thereof. Epoxy resins specified are the condensation products of polyhydroxy compounds such as polyhydric phenols or alcohols, e.g. glycerol, diphenylol propane and the mixed poly-(hydroxy-phenyl) pentadecanes derived from cashew nuts, and epichlorhydrin. The unsaturated alkyd resin may be the reaction products of polyhydric alcohols, mixtures of polyhydric alcohols or polyhydric and monohydric alcohols, and an ethylenicallyunsaturated polycarboxylic acid or plurality thereof. Examples of polyhydric alcohols are ethylene glycol, di- and tri-ethylene glycols, propylene glycol, tri-, tetra- and penta-methylene glycol, glycerine and pentaerythritol. Examples of unsaturated polycarboxylic acids are maleic, fumaric and maleic acids. Anhydrides of these acids may be employed and saturated polycarboxylic acids, e.g. succinic, adipic, sebacic, and phthalic acids may also be present. The vinyl monomers which are copolymerized with the alkyd resins include esters of unsaturated monohydric alcohols and polycarboxylic acids including unsaturated polycarboxylic acids and halogenated aromatic polycarboxylic acids, e.g. diallyl succinate, phthalate, maleate, fumarate, itaconate, chlorphthalate, and triallyl phosphate. Other compounds which may be present in the binder are styrene, dioctyl itaconate, dibenzyl itaconate, diethyl fumarate, and dibenzyl fumarate. The polysiloxane resins may have an average of 1 to 2 hydrocarbon groups, e.g. methyl, ethyl, phenyl, benzyl, and tolyl, per silicon atom. Specifications 542,655 and 548,911 are referred to. Reference has been directed by the Comptroller to Specification 773,282.
Patent GB-769725-A (GB)
Title: Improved wedge grips for use in testing machines
Inventor: HINDE PHILIP BENJAMIN
IPC: G01N3/04
Filed: 1954-12-17
Abstract: 769,725. Grips for testing-machines. AVERY, Ltd., W. & T. Dec. 19, 1955 [Dec. 17, 1954, No. 36542/54. Class 106 (2). A wedge grip for use in testing- machines comprises a movable slide 4 mounted in the machine crosshead 1 having inclined upper faces 4a adapted to bear against the underfaces 3e of wing projections formed on each of a pair of wedges 3, the faces 3e inclining correspondingly with the slide faces 4a so that movement of the slide will be imparted to the pair of wedges simultaneously whilst maintaining the wedges in engagement with the tapering faces of the cavity 2. The slide 4 may be moved by a rack 5 driven by a manually rotatable pinion 6. The wing projections have upper faces 3d of equal but opposite inclination to the under faces to allow the wedges to be employed in an inverted disposition in the complementary, lower cross-head. Liners or shims 9 may be located between the sides of the cavity 2 and the wedges 3.
Patent GB-339478-A (GB)
Title: Improvements in adjusting means for rotatably mounted electrical components
IPC: H03J1/12
Filed: 1929-11-28
Abstract: 339,478. Gramophone Co., Ltd., and West, A. G. D. Nov. 28, 1929. Wireless tuning-apparatus, adjustment devices for. - Adjustment mechanism for radio &c. apparatus comprises a tapered control member 4 frictionally engaging a fixed co-operating part 5, the members 4 being rotatable about the axis A-A and also about the axis B-B of the condenser &c. to be adjusted, and also being movable axially to engage or disengage with the part 5. The spring lever 1 may be arranged normally to keep the parts 4, 5 disengaged. In a modification the axis A-A is at right angles to the axis B-B of the condenser.
Patent GB-1484701-A (GB)
Title: Frequency domain transform system for determining poles and zeros of a function
IPC: G01R27/28
Filed: 1974-08-20
Abstract: 1484701 Locating poles of system transfer functions and evaluating residues TIME/DATA CORP 20 Aug 1974 [20 Aug 1973] 36600/74 Heading G1U The method of estimating the location of the poles of a system transfer function H(s) by locating the peaks in the function |H(jw)|, is modified in that one of the derivatives |H<SP>n</SP>(jw)|, preferably the second, is used instead of |H(jw)|. This is said to provide a better estimate but no proof is given. The methods described consist either, Fig. 2, in  direction differentiation of the function H(jw), or in indirect differentiation, Fig. 3, effected by convolving the impulse response function h(t), which is assumed to be available and of which the transfer function H(s) is the Laplace transform, with a suitable reference function x(t), such as a ramp x(t)=t or a trigonometric function x(t)=sin kt) followed by a Fourier transformation. Having approximated to the location of the poles, the Specification shows how, by using the ordinates of corresponding peaks in two successive derivatives |H<SP>n</SP>(jw)| and |H<SP>n+1</SP>(jw)|, it is possible to approximate to the modulus and argument of the associated residue. In the first embodiment, Fig. 2, the impulse response h(t) of a system under test is sensed 22, Fourier transformed to give H(jw) which is differentiated 24 and stored 25. The stored first derivative is returned for second differentiation, peaks are located 33 in the resulting second derivative, and the ordinates of the first and second derivatives at which the peaks occur are transferred to an arithmetic unit 28 which evaluates, using Formulae derived in the Specification, the corresponding residues. In the second embodiment, Fig. 3, the impulse response function h(t) 40, is digitized 41, 42, convolved 43, 45, 52 with a reference function x(t), and the result is Fourier transformed 58. The resulting signal 59 for suitable choices of x(t), is equivalent to the derivative, or first difference, of the transfer function. The first convolution is also stored 52 so that it can be convolved again with x(t) to produce, after Fourier transformation, the second derivative, or second difference. Peaks are then located, and residues evaluated, as before.
Patent GB-798842-A (GB)
Title: Thermostatic control device
Inventor: STROBEL CHARLES KENNEDY
IPC: F23N5/02
Filed: 1955-12-21
Abstract: 798,842. Temperature - responsive actuating - elements. ROBERTSHAW - FULTON CONTROLS CO. Dec. 21, 1955 [May 18, 1955], No. 36667/55. Class 64(2) [Also in Group XXIX] A valve member 22 (coacting with a seating 18) and a temperature-responsive rod-and-tube 38, 36 are connected by a flexible wire 64 within a flexible tube 50. The valve member 22 is loaded by a spring 32 and adjusted relatively to a screwed stem 24 by a rotary dial 30 having a driving connection 25 with the stem. A bellows 54 secured to a bushing 52 contains a spring 56 and is connected at its free end 58, which is guided in a tube 60, with the flexible wire 64 which is secured at its other end to a cap 42 attached to the end of the rod 38 of the temperature responsive device. The spring 56 keeps taut the wire 64. The rod 38, which is fixed to the alloy tube 36 at its end remote from the wire 64, is made of a ceramic material such as a lithium alumina silicate composition having a negative coefficient of expansion. When the temperature falls, the cap 42 is moved towards the bushing 52 and the bellows end 58 contacts the valve stem 24 to open the valve 22, the spring 56 being stronger than the spring 32. The interior of the tube 50 and the rod-and-tube element, being sealed by the bellows 54, may be filled with an inert gas against corrosion. In a modification, the bellows 54 is omitted and the end of the wire 64 is anchored to a spring- loaded lever which acts on the stem 24 and the rod of the temperature responsive element is subject to the loading of a spring urging it to one end of the tube 36.
Patent GB-1208055-A (GB)
Title: Sewage treatment
IPC: C02F1/76
Filed: 1968-08-01
Abstract: 1,208,055. Treating sewage. FMC CORP. 1 Aug., 1968 [5 Sept., 1967], No. 36667/68. Heading CIC. A process of sewage treatment comprises contacting the sewage with activated sludge under aerobic conditions, separating the liquid of the resulting mixture and mixing it with a chlorinating material which is at least one of sodium dichloroisocyanurate, potassium dichloroisocyanurate, a complex or complexes of potassium dichloroisocyanurate and trichloroisocyanuric acid, trichloroisocyanuric acid, and dichloroisocyanuric acid and which is used in an amount sufficient to produce a chlorinated effluent containing 1 to 6 p.p.m. of residual chlorine. It is stated that the amount of chloroisocyanurate required to attain the above concentration of residual chlorine in the effluent is substantially less, in terms of the amount of chlorine in the additive, than that of conventional chlorinating agents. (See the Fig., not shown).
Patent GB-156177-A (GB)
Title: Improvements in and relating to tension devices for shuttles of looms for weaving
IPC: D03J5/24
Filed: 1920-12-31
Abstract: 156,177. Rossendale-Reddaway Belting & Hose Co., Inc., (Assignees of Barton, J., and Cotterill, W.). Jan. 2, 1919, [Convention date]. Shuttles.-The weft 11 in shuttles used particularly in weaving cotton and hair belting is tensioned by being passed in succession through an eye 21 in a bridge-piece 20 dividing the shuttle into two compartments 14, 19, next through an eye 28 in a lever 26 pivoted at 25, then between a shaped clamping-member 27 on this lever 26 and a smooth-surfaced rotatable cylinder 24, and next under a guide-rod 33 and a cut-away part 23 of the bridge-piece, the weft finally passing out of the shuttle, through one of the usual eyes or perforations therein. The lever 26 is pressed against the cylinder by a spring 29 adjusted by a screw 32 and provided with an extension 30 fitting in a depression in the shuttle. Tufts of hair 17 are provided in the compartment 14, and a longitudinal slot 22 is provided in the lower side of the shuttle.
Patent GB-1139370-A (GB)
Title: Tunnel oven
Inventor: HURTZ ERNST GEORG
IPC: A21B1/48
Filed: 1966-08-16
Abstract: 1,139,370. Endless conveyers. ATLAS EQUIPMENT (LONDON) .Ltd. 9 Nov., 1966 [16 Aug., 1966], No. 36676/66. Heading B8A. [Also in Division A2] Bakery products are carried through a tunnel oven 2 on the upper flight of an endless, flexible, travelling conveyer 14, and means are provided for intercepting the products and discharging them through an intermediate side-exit port 8 before they arrive at the usual end-exit port 9. The intercepting and discharging means comprise a deflecting roller 18, which is pivotally mounted about a conveyer guide roller 10. The roller 18 can be moved, together with a transverse discharge conveyer 20, between an inoperative upper position and a lower position, where the roller 18 depresses the upper flight of the conveyer 14 and causes products to be deposited on the conveyer - 20, which carries them through the port 8. A sliding door 24 is provided to allow swinging movement of the conveyer 20 between its raised and lowered positions.
Patent GB-888765-A (GB)
Title: Fluoro-olefine terpolymers
IPC: C08F214/28
Filed: 1959-10-29
Abstract: An elastomeric terpolymer contains (by weight) 3 to 35% of tetrafluoroethylene and 97 to 65% of vinylidene fluoride and hexafluoropropylene present in a ratio between 7:3 and 2:3 respectively.  The terpolymerization may be effected in an aqueous emulsion system using a redox catalyst, e.g. ammonium persulphate-sodium bisulphite, at superatmospheric pressure and 50 DEG  to 130 DEG C.  The terpolymer may be cured with the same curing agents as vinyl fluoride/hexafluoropropylene copolymers, e.g. hexamethylene diamine carbamate, benzoyl peroxide, high energy radiation, N,N1-arylidenediamines and aliphatic and alicyclic diamines.  These curing agents are used in combination with an acid acceptor, e.g. magnesium or zinc oxide or disodium phosphate.  The polymer may be compounded with sodium fluoride to reduce elimination of HF, with reinforcements such as carbon black and silica, and with colour pigments.  They may be used as laminating agents, e.g. for laminating wove glass fabric (see Group VIII).  Examples illustrate the above features, and one Example (4) describes the compounding, cold milling, and subsequent curing of the terpolymer with zinc oxide, disodium phosphate, silica, a silicone oil, benzoyl peroxide and m-phenylene bismaleimide.  In another Example (6) sodium chloride is used to coagulate the emulsion.
Patent GB-1221938-A (GB)
Title: Phase-sensitive detector or gate circuit arrangements
Inventor: FAULKNER ERIC ANDREW
IPC: H03D1/22
Filed: 1967-08-11
Abstract: 1,221,938. Transistor phase detector and gating circuits; transistor phase splitter. DAWNAY FAULKNER ASSOCIATES Ltd. 1 Aug., 1968 [11 Aug., 1967], No. 36923/67. Headings H3A and H3T. In a phase-sensitive detector or gate circuit having two sections each of which includes a transistor Q1, Q4 connected to receive an input signal 1 and a load consisting of two alternative paths each comprising the emitter collector circuit of a transistor Q2, Q3 and Q5, Q6, the transistors in the paths of one section are of opposite type to those in the other section, means for applying reference signal inputs to each section causes the transistors Q2 or Q3; Q5 or Q6 of each section to conduct alternately and an output RL and/or RL<SP>1</SP> is provided indicative of the difference in magnitude of current flows between at least one pair of paths connected to each other. With no reference input the currents in Q1 and Q4 and in the switching pairs of transistors Q2, Q3 and Q5, Q6 are equal. This is achieved by connecting the base of Q4 to the positive line 6, so making Q4, Q5 and Q6 OFF, and adjusting R4 to make the current through Q2 and Q3 equal such that the output voltage at VA equals VB. Similarly the PNP section Q4, Q5, Q6 can be adjusted by variation of R4<SP>1</SP>. By applying a 1kHz sinusoidal voltage to the reference input any unbalance will produce a squarewave output at VA and this can be removed by adjustment of resistors R3 or K3<SP>1</SP>. When an antiphase reference signal at 4 and 5 is one polarity transistors Q2 and Q5 conduct and transistors Q3 and Q6 are cut off and conversely for the opposite polarity signal. With the circuit balanced as described above the reference switching voltage applied at 4, 5 does not appear at output A or B, which remain at ground potential in the absence of any signal at 1. On applying a signal input to 1 there will be corresponding changes in voltage at terminals A and B alternately as switched by the reference input. The signal input may be applied to the bases instead of the emitters of Q1 and Q4. If single sided output is required terminal A can be earthed and RL<SP>1</SP> removed, the output being taken from B only. Phase splitting circuits for obtaining the antiphase reference signals 4 and 5 from a single reference input (7 or 8, Figs. 2 and 3, not shown), may consist of emitter coupled transistors (Q7, Q8) or two transistors (Q7, Q10) connected in series. To prevent large input reference voltages from causing breakdown between the emitter-base function of the input transistors (Q7, Q9) of the phase splitter circuits diodes (D1, D2 or D5, D6) are connected back to back between the base electrode of these transistors and ground. With the series transistor arrangement either both transistors Q9, Q10 conduct or they both are OFF depending on the polarity of the input reference signal and the outputs are taken from the collector circuits via respective Zener diodes (Z<SP>1</SP>, Z).
Patent GB-899186-A (GB)
Title: Improvements relating to oil-burning space-heating appliances
Inventor: LESLIE IVAN ALEXANDER
IPC: F16K31/524
Filed: 1959-11-02
Abstract: 899,186. Valves. SANKEY & SONS Ltd., JOSEPH. Oct. 26, 1960 [Nov. 2, 1959], No. 37056/59. Class 135.  The oil feed to a space heater is adjusted by an axially movable valve 9 opened when the end of a control lever 16 pivoted at 24 cams on a pivoted lever or blade spring 14 engaging the stem 8 of the valve, the amount of opening when the lever is in its extreme position being adjustable by axially moving the control lever, e.g. by rotating it so that it screws through the pivot up to a stop 21. The blade 14 may be a cam lever loaded by a spring to close a needle valve. Oil flows from a reservoir via lines 3, 27 to an ignition device and from line 3 to line 4 leading to the heater when the valve opens. Specification 873,446 is referred to.