baber/WOPTO huggingface dataset:
Patent GB-784418-A (GB)
Title: Improvements in or relating to paper-making and like machines
IPC: D21G9/00
Filed: 1954-12-11
Abstract: 784,418. Replacing felts of paper-making machines &c. DUCKWORTH, B. Dec. 14, 1955 [Dec. 11, 1954], No. 35926/54. Class 96. Wet press felts, or dryer felts are inserted in or removed from paper-making, felt-finishing, or like machines by gathering one run of the felt into a notch r of a bearing-disc q peripherally supported on bearing-rollers s, the disc q being then turned through 360 degrees in the appropriate direction to draw the run of the felt over or remove it from the roll m over which it runs. A lug u &c. normally holds the disc q stationary, and a peg-hole q<SP>1</SP> &c. provides for coupling the disc to the roll m so that it may be turned by the power-drive of the roll m. The invention may be applied to belt or rope drives.
Patent GB-753601-A (GB)
Title: Improvements in or relating to television camera apparatus
IPC: H01J29/02
Filed: 1953-12-30
Abstract: 753,601. Television. FERNSEH GES. Dec. 30, 1953 [Jan. 16, 1953], No. 36166/53. Class 40 (3). [Also in Group XL (a)] Disturbances produced in the output picture signal of image type picture signal generating tubes, where the image being televised is illuminated by intermittent light (e.g. A.C. gasdischarge lamps) are corrected by combining with the picture signal output a correcting signal produced by the flow of secondary electrons emitted by the storage electrode, it being stated that these electrons are modulated at the same frequency as the disturbance signals but in opposite phase. In the described embodiment the secondary electrons are collected by two portions 6, 7 of the signal electrode from which the insulating layer forming the storage electrode 1 is removed. The signal electrode, via potentiometer 9 and load resistor 8, is maintained at a potential which is positive with respect to that of the final anode of the tube so that the signal developed across load resistor 8 and fed to the video amplifier 17 comprises the desired picture signals together with the disturbance signals and, in addition, the disturbance signals of opposite phase. Cancellation of the latter signals is therefore effected. Framing electrodes 2, 3, 4, 5 surrounding the rectangular image area and maintained at a suitable potential via potentiometers 11, 12, 13, 14, are provided for " shading signal " correction.
Patent GB-1186238-A (GB)
Title: Photographic Apparatus.
IPC: G03B11/04
Filed: 1967-08-07
Abstract: 1,186,238. Printer-processor. MINNESOTA MINING & MFG. CO. Aug. 7, 1967 [Aug.8, 1966], No. 36188/67. Heading G2A. A printing and processing apparatus comprises a first enclosure 11 housing a lamp 18 which serves as a source of both light and heat. The light passes through a condenser system 22 and through an aperture 17 in the wall 16 of the enclosure. Across aperture 17 are mounted side rails (28, Fig.3, not shown) for holding a slide mount (29) carrying the negative or transparency. A second enclosure 35 has on one wall 47 a pair of side rails 45 into which can be slid a holder for a light-sensitive sheet, which is exposed through an aperture 48 in wall 47. On the opposite wall 36 of enclosure 35 a mounting 33, 34 carries an objective lens. The two enclosures 11, 35 are connected together by rods 37 which allow relative movement between the two, so that the magnification may be varied. Within enclosure 35 a mirror 39 is mounted on an axial pivot 40, so that it may be swung entirely out of the light path when a print or enlargement is to be made. When it is interposed in the light path, as shown in Fig. 2, the image of the negative is reflected on to a viewing screen 42, and to facilitate viewing, this part of the apparatus is tilted as shown. (The apparatus may be used as a contact printer by putting both negative and light-sensitive sheet together into the holder which slides between rails 45.) The apparatus is envisaged as being used for making prints which can be developed by heat only, and the first enclosure 11 is adapted for this purpose. It has an arcuate metal top 12, on which the exposed sheet is placed and held in close contact by a transparent screen 14, hinged to the top along one edge and having a handle 15 at the other edge. Thus the sheet is developed by heat from lamp 18, and the degree of development can be controlled by visual inspection through the transparent screen 14.
Patent GB-1094316-A (GB)
Title: Copolymers of 1,1-dihydro-perfluoroalkyl ª-trifluoro-methacrylates
IPC: D06M15/277
Filed: 1966-08-12
Abstract: The invention comprises copolymers of compounds of the formula <FORM:1094316/C3/1> wherein n is an integer of 3-17, and comonomers which contain an ethylenic linkage, many such comonomers being specified.  The copolymers may be homogeneous or segmented (or heterogeneous) and are prepared by the use of conventional polymerization techniques. The copolymers may be cast as films from their solutions, particularly solutions in fluorinated liquids, e.g. benzotrifluoride, and such solutions may be blended with solutions of poly-n-octyl methacrylate.ALSO:The invention comprises compounds of the general formula <FORM:1094316/C2/1> wherein n is an integer of 3-17.  The compounds are prepared by treating a -trifluoromethacrylic acid with PCl5 to give the acid chloride which is then reacted with the appropriate alcohol in the presence of a base.ALSO:Fabrics of wool and cotton are treated with a 2% by weight solution in benzotrifluoride of a copolymer of a compound of the formula:- <FORM:1094316/D1-D2/1> wherein n is an integer of 3 - 17, and a comonomer which contains an ethylenic linkage.  The copolymer solution may be blended with a 2% by weight solution of poly-n-octyl methacrylate as an extender.  The above copolymers may also be used as finishes for paper.ALSO:Oil- and water-repellent finishes for materials such as textiles, paper, leather, and painted wooden and metallic surfaces comprise copolymers of compounds of the formula <FORM:1094316/B1-B2/1> wherein n is an integer of 3-17, and comonomers which contain an ethylenic linkage.  In particular, a fibre or fibre assembly may be treated to improve the appearance or inhibit the deterioration of the appearance thereof by the application to the surface of the fibre or fibre assembly of a copolymer of the above type.  In the Examples, various copolymers of the above type are applied to cotton and wool fabrics as a 2% by weight solution in benzotrifluoride.  In an Example, poly-n-octyl methacrylate is present in addition to the above copolymers as an extender.
Patent GB-766809-A (GB)
Title: The preparation of n:n-dibenzyl ethylene diamine
Inventor: SOUTHWOOD JOHN
Filed: 1953-12-31
Abstract: N : N1-Dibenzyl ethylene diamine is prepared by reducing N : N1-dibenzylidene ethylene diamine with an excess over the stoichiometrical quantity of metallic sodium and a mixture of methanol and isopropanol, the proportions by weight of which lie in the range 1 : 4 to 1 : 6, and the weight of which alcohol mixture is from 4 to 5 1/2 times the weight of the N : N1-dibenzylidene ethylene diamine, at the refluxing temperature of the reaction mixture at atmospheric pressure.  The reaction is effected with or without separate agitation and the product is isolated by the addition of water to the reaction mixture and distillation of the alcohols under reduced pressure followed by conversion to the sulphate or di-acetate salts.  In examples, (1) metallic sodium is dissolved in a refluxing solution of N : N1-dibenzylidene ethylene diamine in methanolisopropanol, water is added, the organic layer distilled leaving a residue which is dissolved in aqueous sulphuric acid and cooled to obtain N : N1-dibenzyl ethylene diamine sulphate; (2) for comparison illustrates the above reduction using ethanol, methanol, isopropanol or a mixture of ethanol and isopropanol with sodium; (3) and (4) illustrate isolation of N : N1-dibenzyl ethylene diamine via the di-acetate.
Patent GB-445438-A (GB)
Title: Improvements in photographic contact printing by reflected light
IPC: G03C5/10
Filed: 1934-12-18
Abstract: 445,438. Photographic reflex copying processes; diazotype processes. NAAMLOOZE VENNOOTSCHAP CHEMISCHE FABRIEK L. VAN DER GRINTEN, Venlo, Limburg, Holland. Dec. 18, 1934, No. 36308. Convention date, Dec. 20, 1933. Drawings to Specification. [Class 98 (ii)] Reflex copies obtained by use of radiation subdivided into small areas of greater and less actinic intensity are re-copied one or more times to reduce screen structure. The copies may be intensified by the use of mercury salts or the like, or intermediate layers whose power of absorption is reduced by exposure to radiation, such as layers containing ferric sulphocyanides or diazo compounds, may be used. The intermediate layer may comprise a gelatine or collodion film containing potassium ferric oxalate and ammonium sulphocyanide. The reflex copy may be made on a silver bromide gelatine layer on a cellulose support using a covering screen and a copy may be made on a silver bromide or a diazotype layer. In another example, the reflex copy is made on a cellulose foil provided on both sides with a blue-print layer, using a crossed covering screen. In re-copying one side of the reflex copy is rendered matt, or an intermediate diffusing layer is used. In another example the reflex copy is made using a cylindrical lens screen on a composite layer having a support, a layer of paradiazodimethylmetatoluidinechloride, and a layer of cellulose acetate saponified on the rear and provided with a layer of paradiazoethylbenzylaniline chloride. Behind the original is placed a piece of black velvet. The whole system is passed over a cylinder in the axis of which the source of light is oscillated, and the last sensitive layer is developed with alkaline resorcinol solution. The reflex copy is recopied on to diazotype material. The source of light may be an arc or mercury vapour lamp. The reflex copy may be passed between rollers moving at different speeds to distribute the pigment. The re-copying may be performed between two flexible transparent bands. In recopying twice the incident light may be at angles of 40‹ to left and right respectively.
Patent GB-873870-A (GB)
Title: Apparatus for sorting cylindrical objects according to their diameters
IPC: B07C5/06
Filed: 1959-10-27
Abstract: 873,870. Sorting solid materials. FITZGERALD, A. S. Oct. 27, 1959 [Oct. 27, 1958], No. 36343/59. Addition to 849,822. Class 117 [Also in Group XIX] Apparatus for sorting cylindrical objects as described in the parent Specification is modified by omitting the reciprocating magnet and allowing the objects to roll under the influence of gravity through the gauging device. As shown in the drawing, the base 5 and the gauging element 3 are both mounted at a slight angle to the horizontal in the longitudinal direction of the gauge. The gauging element 3 is pivoted about an axis lying in this direction, and is urged, either into the position shown or into a position in which it is horizontal transversely to its length, by a snap-action spring 70. A drill to be sorted is placed in the hopper 44 and falls into the gauging element 3. This is then moved to the horizontal position and the drill is released to roll along until stopped by one of the steps of the gauge. The element is then tilted into the position shown and the drill falls into one of the compartments 8. Specification 873,869 also is referred to.
Patent GB-1515018-A (GB)
Title: Process for removing sulphur oxides and nitrogen oxides from flue gases
IPC: B01J21/18
Filed: 1975-09-03
Abstract: 1515018 Removing nitrogen oxides and/or sulphur oxides from flue gases HITACHI Ltd 3 Sept 1975 [4 Sept 1974] 36353/75 Heading C1A NO x  and/or SO x  are removed from flue gases by contacting the gas with a catalyst comprising a carbonaceous material impregnated with (a) one at least of Cl 2 , Br 2 , I 2 , NH 4 Cl, NH 4 Br, NH 4 I, HCl, HBr and HI and (b) at least one metallic element or its oxide or salt, the element falling within group 1B, 2A, 3A, 4A, 5A, 6A or 8 of the Periodic Table, in the presence of ammonia.
Patent GB-1298587-A (GB)
Title: Methods of contraception and contraceptive compositions
IPC: A61K31/565
Filed: 1970-07-28
Abstract: 1298587 Contraceptives AMERICAN HOME PRODUCTS CORP 28 July 1970 [28 July 1969 (2) 7 Jan 1970] 36413/70 Heading A5B [Also in Division C2] Contraceptive compositions comprise a carrier and a compound of the general formula: wherein R<SP>1</SP> is C 1-10  alkyl, R<SP>2</SP> is OH or OOC- alkyl (C 1-10 ), R<SP>3</SP> is H or C 1-10  alkyl, or R<SP>2</SP> and R<SP>3</SP> together are = O and R<SP>4</SP> is H or C 1-10  alkyl, (of the α or # configuration), the compound being substantially free from the corresponding d-enantiomorph. They may suitably be in such forms as tablets and capsules for oral administration. The invention also includes contraceptive methods whereby active compounds (and compositions) are administered to warmblooded, ovulating vertebrates, the said compounds having the general formula wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are as indicated above and R<SP>5</SP> is H or OH (of either α or # configuration).
Patent GB-792632-A (GB)
Title: Improvements in or relating to apparatus for sampling during hammer-drilling
IPC: E21B21/06
Filed: 1955-12-20
Abstract: 792,632. Sampling during hammer drilling. AKTIEBOLAGET SEPARATOR. Dec. 20, 1955 [Dec. 20, 1954], No. 36447/55. Class 58. [Also in Group XXIII]  In sampling minerals and rock during hammer drilling, all the detritus from a selected length of the bore 2 is recovered as a sample by feeding a flushing liquid, e.g., water, into the bore through a central channel in the bit 45 and conducting the liquid and entrained detritus out of the bore and into a casing 15 through the space between the bit and a surrounding tube 4 sealed in a wider entry portion 3 of the bore by an elastic, e.g., rubber, ring 5. The liquid is deflected by a baffle 14 through an outlet 16 into a bucket 31, carried in a funnel 27 slung from studs 25 on the casing, overflows through holes around the upper part of the bucket and is deflected by a flange 38 on a detachable funnel resting on the bucket into the funnel 27, from which the liquid passes into a centrifugal separator 48 having a removable rotor, in which detritus escaping the bucket is collected. Separated liquid leaves by an outlet 49. The detachable funnel has radial vanes on the outer surface of its spout to prevent turbulent flow inside the bucket. Located below the overflow holes in the bucket are one or more closable holes through which liquid can be drawn off when flow into the bucket ceases. The funnel 27 is then slung from lower studs 41 so that the bucket can be removed. The detritus collected in the bucket and rotor constitutes the sample. The baffle 14 has a hole for the bit. In order to prevent liquid creeping along the bit, compressed air may be blown along it from nozzles 20 located near a sleeve 24 through which the bit enters the casing. The latter may be supported by one or more legs 18, preferably, adjustable in length. The bit 45 is held in the chuck 44 of the drilling machine 42 and flushing liquid is fed into the chuck through a tube 46.
Patent GB-1497480-A (GB)
Title: Production of aromatic polyamides
IPC: C08G69/00
Filed: 1975-09-04
Abstract: 1497480 Aromatic polyamides SUMITOMO CHEMICAL CO Ltd 4 Sept 1975 [9 Sept 1974] 36504/75 Heading C3R Aromatic polyamides are produced by the liquid phase polycondensation in N-methylpyrrolidone and/or dimethylacetamide as solvent of an aromatic diamine and a a dicarboxylic acid or an aromatic aminoacid in the presence of (a) a phosphorous compound R<SP>4</SP>-P (OR<SP>5</SP>) 2 , (b) a tertiary amine and (c) anhydrous Li and/or Ca halide. In (a) R<SP>5</SP> is aryl, unsubstituted or substituted by C 1-6  alkyl or alkoxy, phenyl, Ha, NO 2  or CN and R<SP>4</SP> is OR<SP>5</SP>, OH, C 1-6  alkyl or R<SP>5</SP>, In specific examples the monomers are m or p-aminobenzoic acid or is ophetalic acid and p-phenylene diamine or di-(4-aminophenyl)-ether or -methane ; (a) is di- or triphenyl or tritolyl phosphate or ethyl diphenyl phosphonite (C 2 H 5  -P(OC 6 H 5 ) 2 ; (b) is pyridine; and (c) LiCl or CuCl 2 . General reference is made to other monomers (including aliphatic acids) and compounds (a) and (b).
Patent GB-449171-A (GB)
Title: Process of printing textile materials with vat-dyestuffs
Filed: 1934-12-20
Abstract: Printing textile materials with vat dyestuffs in presence of an alkaline reducing agent is effected with incorporation in the printing preparation of a nitrogen-containing derivative of a sugar, e.g. glucamine, methylglucamine, butylglucamine, phenylglucamine, oxyethylglucamine or ethylenediglucamine.  The process is applicable to direct, discharge or resist printing. The following examples are specified: (1) Vegetable or animal fibre material, e.g. natural silk, is printed with an aqueous paste containing glycerol, wheat starch-tragacanth thickening, potassium carbonate, sodium formaldehydesulphoxylate, the dyestuff obtainable by melting 2-methylbenzanthrone with sulphur, and butylglucamine, and the printed material is dried, steamed, rinsed with or without addition of an oxidizing agent, soaped hot, rinsed and dried; (2) the material is printed with a similar aqueous paste containing, as dyestuff, dimethoxydibenzanthrone, and as sugar derivative, phenylglucamine, and is further treated as in (1); (3) the material is printed with a similar aqueous paste containing, as dyestuff, N-dihydro-1 : 2 : 1<1> : 2<1>-anthraquinonazine, and as sugar derivative, glucamine, and is further treated as in (1).  The Specification as open to inspection under Sect. 91 comprises also the use as sugar derivatives of benzyl-, diethyl-, and dioxyethylglucamines, butylxylamine and methylfructamine and includes a further example of a mixture of dimethoxydibenzanthrone and benzylglucamine suitable for incorporation in printing colours.  This subject-matter does not appear in the Specification as accepted.
Patent GB-962582-A (GB)
Title: Radioactive carrier compositions
IPC: C08G59/18
Filed: 1961-10-12
Abstract: An epoxy resin cured with a curing agent which is an amine, a polyamide, or an amine-polyamide adduct, has dispersed therein a radio-active material.  The composition is prepared by combining a pourable epoxy resin, e.g. of epoxide equivalent 140-550, with a pourable curing agent, e.g. of amine equivalent 80-450, adding a radio-active material to this mixture and dispensing the final mix into appropriate moulding devices, e.g. fine tubing, capsules, or between glass sheets, and curing at ambient or moderately elevated temperature, e.g. 70 DEG C. for 1 hour or 150 DEG C. for five minutes.  If the resins and curing agents are solid or semi-solid they can be dissolved in appropriate solvents to carry out the process of the invention. The radio-active material may be added as a solution to the resin mix but in this case a dispersing agent e.g. glacial acetic acid should also be used.  Other fillers may also be added to the resin mix.ALSO:A surgical suture may be prepared from a composition comprising an epoxy resin with a curing agent which is an amine, a polyamide, or an amine-polyamide adduct, said resin having dispersed therein a radio-active source.  The suture is formed by transferring a pourable mixture of the radio-isotope and the resin into small diameter polyethylene or p.v.c. tubing, the mixture preferably being injected therein by a small disposable hypodermic syringe. The tubing is then stretched and the curing process accelerated by subjecting the filled tube to a temperature of 150 DEG C. for five minutes.  If the resin co-reactants have been first dissolved in a solvent, then an initial curing at 70 DEG  C. for about 1 hour is necessary.  Any selected radio-active material, according to the medical treatment required, may be incorporated in solid or solution form in the resin co-reactants to give a suture which may be placed near the desired target of the body.
Patent GB-1382857-A (GB)
Title: Adhesive compositions
IPC: C08G18/80
Filed: 1972-08-07
Abstract: 1382857 Contact adhesive composition BAYERAG 7 Aug 1972 [7 Aug 1971] 36689/72 Heading C3R A solvent-free contact adhesive composition comprises a mixture of (1) a polyalkylene polyether polyol of M.W. 1000 to 10.000; (2) a diisocyanatodiurethane derived from an aromatic diisocyanate and an alkylene, oxyalkylene or polyoxyalkylene glycol having a M.W. up to 400 and (3) a catalyst for the OH/NCO reaction, the NCO/OH ratio in the mixture being from 0À5 to 1À5 : 1. The component (2) may also contain an aromatic diisocyanate if a molar ratio of greater than 2 : 1 of diisocyanate to glycol is used in the preparation thereof. Particularly preferred polyalkylene polyether polyols are polypropylene polyether polyols, especially those capped with ethylene oxide units. The diisocyanatodiurethanes are preferably prepared by reacting 4,41-diisocyanatodiphenylmethane with tripropylene glycol. Tertiary amines and organometallic compounds are the preferred catalysts. The contact adhesive composition may be applied to paper, textiles, plastics, rubber, metal or ceramic materials.
Patent GB-837311-A (GB)
Title: Method of protecting active metals
Inventor: SCHECHTER WILLIAM HOWARD
IPC: A62D1/00
Filed: 1956-11-30
Abstract: 837,311. Protecting metals from fire. CALLERY CHEMICAL CO. Nov. 30, 1956, No. 36773/56. Class 47 A liquid comprising or containing a trialkoxyboroxine projected on to buring alkali metal, magnesium or aluminium deposits large quantities of boric oxide as a glassy coating on the metal and suppresses the fire. Trimethoxyboroxine B 3 O 3 (OCH 3 ) 3  or the ethoxy- or propoxycompound with or without dissolved boric oxide or methyl borate is suitable.
Patent GB-1173110-A (GB)
Title: Electric Watch System
Inventor: WOOTTON GERALD ROBERT
IPC: G04C3/14
Filed: 1968-08-01
Abstract: 1,173,110. Piezoelectric motors; reciprocating motors. BENRUS WATCH CO. Inc. 1 Aug., 1968 [28 Aug., 1967], No. 36832/68. Heading H2A. [Also in Divisions G3 and H3] In an electric watch (see Division G3) the 9À6 kilohertz output signal frequency of an electronic oscillator is converted by a frequency reducing network and a multivibrator circuit into two signals each having a frequency of 4 Hertz. These signals are fed to the leads 96 and 100 respectively of a circuit 24, the terminals 70, 72 of which are connected to a 1¢ volt battery. The input signals actuate the circuit 24 such that voltages of about 10 volts are alternately applied to the electrodes 56, 58 of a cantilever mounted piezoelectric crystal 54. A pawl 36 attached to the free end of the crystal drives a ratchet wheel 38 which in turn drives the gear train of the watch. In a modification, the piezoelectric crystal is replaced by an electromagnetically latched armature 102. The armature may be a permanently magnetized strip pivotally mounted between the polepieces 104, 106 of a magnetizable structure 108.
Patent GB-1193997-A (GB)
Title: Square Wave Generator
IPC: H03K17/66
Filed: 1967-08-10
Abstract: 1,193,997. Transistor switching circuits HEWLETT-PACKARD CO. 10 Aug., 1967 [9 Sept., 1966], No. 36871/67. Heading H3T. [Also in Divisions G3 and H2] In a system in which the output terminal 13 is connected alternately to D.C. supply sources 9, 11, each source 9, 11 is connected through a series regulator 15, 19 and a switch 17, 21, the output being fed back through dividers 33-35, 39-41 and respective amplifiers 29, 31 to control regulators 15, 19. Switches 17, 21 are rendered alternately conductive by a switching source 27. Further switches 23, 25 are also provided and operated by source 27 so that when one of the main switches 17, 21 is non-conductive, its associated further switch 23 or 25 is conductive. Hence each D.C. supply and regulator pass substantially the same current when their associated main switch 17 or 21 is off as when it is on, thus facilitating a high switching rate of the two channels.