baber/WOPTO huggingface dataset:
Patent GB-637426-A (GB)
Title: Improvements relating to locking devices for collapsible frameworks
IPC: B62B7/10
Filed: 1948-03-04
Abstract: 637,426. Pivoting adjustments. LINES BROS., Ltd., and LINES, W. March 4, 1948, No. 6797. [Class 65 (ii)] The bars 2, 4 of a framework are pivotally connected together at 5 and are held in longitudinal alignment by a device comprising a channel-shaped member 7 adapted to embrace both bars in their position of alignment. The channel member is pivoted at 8 on a bracket 10 carried by the bar 4 and is urged to the embracing position by a coil spring 11. The sides of the channel member are sloped to form cam surfaces adapted to co-operate with the bar 2 in order to force the channel member to yield progressively when the bars are moved towards their aligned position. In a modification the channel member is mounted on one end of a leaf spring, the other end of which is anchored to the bar 4.
Patent GB-699441-A (GB)
Title: Improved apparatus for loading logs or the like for transport
IPC: B60P1/64
Filed: 1952-03-17
Abstract: 699,441. Load handling appliances; vehicle fittings. PETRENKO, F. March 17, 1952. [March 19, 1951] No. 6835/52. Class 78 (iii) and 78 (iv). Means for loading logs onto a trailer comprises cables operated independently from the two drums of a winch. The wheeled trailer chassis 13 is connected by a drawbar 12 to the tractor 10 and supports a channelled bolster 14. A second bolster 15 is pivotally connected to the tractor chassis 17. At each end of the bolsters is an upright socket 18 for a removable part 19, which carries a pulley wheel 20 at the top. The bolsters each carry one pair of pulleys 44 on either side of the centre line and a pulley 46 at each end. A cable 43 is wound on each drum 31 of the winch. One cable passes from the drum between one pair of pulleys 44 through openings in the bolster 15 round one pulley 44 round a pulley 46 and up over a pulley 20 then round a log 47 finally anchoring at 49 on the chassis. The cable from the other drum passes round a pulley 44 and a pulley 46 and up over the pulley 20, round the log to an anchorage at 48. The winch drums 31 are mounted on a shaft 22 driven from the tractor engine. The drums can be moved axially independently by operating either handle 41 connected to a cam  sleeve, 39 rotatable on the shaft to bring one end of the drum into contact with a friction plate 36 keyed to the shaft and the other end into contact with one side of a central friction plate 29 secured to the shaft thus transferring the drive to the drum. Each drum has a ratchet wheel 33 which can be engaged by a pawl 34 operated by.hand. The logs are drawn onto the vehicle up inclined members 50.
Patent GB-1007100-A (GB)
Title: Improvements in or relating to automatic telephone systems
IPC: H04Q3/62
Filed: 1964-02-19
Abstract: 1,007,100. Automatic exchange systems. SIEMENS & HALSKE A.G. Feb. 19, 1964 [Feb. 20, 1963], No. 6847/64. Heading H4K. In a system employing voice-frequency sending from a substation, each digit is preceded by a break impulse which connects up the VF receiver, and, when a connection has been established, a similar impulse serves to effect a special facility such as break-in or calltransfer. As shown, a calling line is extended over switches EK, ZK to a link circuit Ue, which is connected by relay SA over a switch SK to an idle register Sp1. Dialling tone is supplied from WzS by way of winding V of transformer U, and the relapse of relay A in response to the preliminary break impulse energizes relay AF which connects up the common VF receiver WE to receive the digit signal. Similar action takes place for each digit, and WE transfers its records to a memory ZK in the register Sp1. Relays SA1, SA2 ensure that the receiver WE can be associated with only one register Sp1. When a connection has been established, relay SA is no longer energized, and a break impulse may control relay AUF to effect break-in or relay YZ to effect call-transfer according to the condition of the link circuit Ue.
Patent GB-142972-A (GB)
Title: Improvements in carburetters
IPC: F02M9/10
Filed: 1919-03-19
Abstract: 142,972. Bayliss, B. H. March 19, 1919. Addition to 126,226. Spray carburettors.-The parent Specification describes a carburettor in which a variable choketube is formed by hinging one of the walls, the fuel supply being controlled by a needle valve carried by the hinged wall. According to the invention, the hinged wall 3, or the opposite fixed wall of the carburettor body, is provided with a longitudinal groove 4 for slow-running purposes, the capacity of the groove being regulated by a screw 5. The screw 5, and the screw 6 controlling the fuel needle-valve are provided with calibrated heads 8 working in conjunction with locking-pins 9. To restrict the flow of fuel at high speeds, the fuel nozzle may be surrounded by an adjustable sleeve 11 the upper end of which is cut on the incline facing the incoming-air to act as a baffle. To prevent leakage of air, the sides of the hinged wall 3 or of the carburettor body may be lined with felt. and a felt pad 12 may be provided in the hinge.
Patent GB-697865-A (GB)
Title: Improvements in machine tools
IPC: B23Q11/04
Filed: 1951-03-22
Abstract: 697,865. Overload release devices. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 22,1951 [March 28, 1950], No. 6898/51. Drawings to Specification. Classes 80 (ii) and 80 (iii). The overload release clutch described in Specification 653,762 is used in a machine-tool such as a lathe (shown in the main spindle drive in the headstock), drilling, milling, planing, drawmilling machine or press, and is applied to the coupling of rectilinearly - moving as well as rotary members. Specification 634,781 also is referred to.
Patent GB-799078-A (GB)
Title: Electrical digital computing engines
Inventor: DAVIES DONALD WATTS
IPC: G06F9/355
Filed: 1956-03-05
Abstract: 799,078. Digital electric calculating-apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 26, 1957 [March 5, 1956], No. 6903/56. Class 106 (1). An electrical digital computing engine arranged to operate with an instruction word containing at least one address number, function digits and a timing number, and arranged to use a modifying number for modifying the instruction word, includes means for additively or subtractively combining the modifying number with the timing number, a store for storing at least part of the result of the combination of the modifying number and the timing number and means for modifying, under the control of a function digit, an address number with the contents of the store. As described, Fig. 1, instruction words of forty-eight binary digits P1 ... P48, arranged as follows, are employed:- P1 to P5. A timing number defining the position of words in the sources and the destination. P6 to P11. Function digits. P12 to P17. First source address number. P18 to P23. Second source address number. P24 to P29. Destination address number. P30 to P35. Next instruction address number. P36 to P40. Counting number. P41 to P45. Second timing number for selecting the next instruction. P46 to P48. Irrelevant digits. An " address number " refers to a particular storage element such as a delay line, a magnetic drum track or a Williams tube, and a " timing number " refers to the position of a particular word in the storage element. An instruction word and a modifying number which modifies the timing numbers and may also modify the source and destination numbers are fed to an adder 4 comprising half adders 41, 42. To avoid unwanted spill-overs round carry is suppressed at the gate 8 at times P6, P18, P24, P30 and P46 but at time P6 any round carry produced sets the trigger M which remains on until P40. The function digits P6, P7, P8 are staticized and allow modification if required by adding one from the respective gates 16, 18, 14 at times P12, P18, P24 to the source and destination numbers the P36 pulse adds one to the counting number which has an initial value such that for example a desired sequence of source addresses is used before a carry from the counting number changes the second timing number and a new instruction word is called on. A series of numbers may be run through backwards without using a subtractor by adding thirty-one (i.e. minus one modulo thirty-two) to the timing number. A modification (Fig. 2, not shown) enables six binary "carry" digits to be stored and added into later parts of the instruction word by by-passing the adder 4 during the incidence of the function digits P6 to P11. If it is required to modify the timing number by only one digit at a time a single half-adder may be employed (Fig. 3, not shown). Subtractor and halfsubtractors may be substituted for the adders and half-adders. Specifications 717,114 and 718,894 are referred to.
Patent GB-835924-A (GB)
Title: Improvements in or relating to electric motor control arrangements
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: B66B1/12
Filed: 1957-03-01
Abstract: 835,924. Control of A.C. motors. GENERAL ELECTRIC CO. Ltd. Feb. 25, 1958 [March 1, 1957; Sept. 30, 1957], Nos. 6972/57 and 30543/57. Addition to 774,691. Drawings to Specification. Class 38 (3). [Also in Group XXXV] In a control system as in the parent Specification in which a resistance in the rotor circuit of an induction motor is automatically varied to maintain a value of rotor current corresponding to a desired torque, the desired value of torque is set by varying the effective ratio of the current transformer, responsive to rotor current, which energizes an electromagnet controlling a fluid-operated servo-mechanism varying the rotor resistance. A three-phase liquid resistance is employed in the arrangements described. In one arrangement current transformers energize the electromagnet through auto-transformers which are adjustable by a manually operated lever to set the desired value of torque. In a modification in which motor speed is automatically maintained at a desired value in either direction, the current transformers are of the saturable type and their effective ratios are controlled by energizing control windings in accordance with the difference between the voltage of a tachometer generator coupled to the motor and the voltage from a potentiometer adjusted by a manually operated lever which thus serves to set the motor speed. In this arrangement the difference voltage also controls the electromagnet during motoring. In both arrangements, as in the parent Specification, the rotor current is automatically controlled during direct-current dynamic braking.
Patent GB-1412422-A (GB)
Title: Process for the manufacture of electro-conductive fibre mats  or foils
IPC: G03G5/10
Filed: 1972-02-16
Abstract: 1412422 Electroconductive fibrous mats or foils SCHOLTEN-HONIG RESEARCH BV 16 Feb 1973 [16 Feb 1972] 7056/72 Heading B2E [Also in Division G2] An electroconductive fibre mat or foil comprises a fibre mat or foil coated on at least one side with a coating comprising a cationic water-soluble hydrophilic polymeric polyol ether or ester containing tertiary amino groups, quaternary ammonium groups, tertiary sulphonium groups or quaternary phosphonium groups in an amount corresponding to an average degree of substitution of at least 0.25 and, if desired, an electroconductive resin and/ or a pigment, whereby the specific surface resistance of the coating at a relative humidity of 10% is less than 10<SP>12</SP> ohms/square and at a relative humidity of 65% is higher than 10<SP>6</SP> ohms/square. The polymeric polyol is preferably a polysaccharide and the coating may include a hardening agent for the polymeric polyol. The fibre mat or foil may be made of cellulose or synthetic polymers such as polyamide, polyvinyl chloride, polyethylene or polyester. The conductive coating may include 15-40% pigments, e.g. clay or calcium carbonate. The polysaccharide from which the ether or ester is derived may be starch, cellulose, hemicellulose, guar gum, carob bean gum, alginic acid, pectin, karaya gum, gum arabic, or tamarind seed flour. Starch derivatives, e.g. amylose, amylopectin, dextrin, acid modified starches, etherified starches or oxidised starches are also mentioned. The cationic polysaccharide may contain other substituent groups such as hydroxyalkyl, alkyl or acetate groups. The coating is preferably applied as a slurry or solution using a sizing press but may be applied by a blade coater, roll coater or air knife coater. The hardening agent is preferably 2-20 wt % melamine/formaldehyde resin or may be urea/formaldehyde, ketone/formaldehyde, glyoxal or polyamide/epichlorohydrin resins. The electroconductive resin may be polyvinylbenzyltrimethylammonium chloride. A photosensitive or a dielectric top-coat may be applied to the electroconductive mat or foil. The photosensitive coat may be of a photosensitive pigment or dye e.g. ZnO with optional sensitisers such as eosin or fluoroescein, in a film forming organic binder. Instead of or in addition to ZnO, TiO 2  may be used. Suitable photosensitol coatings are formed of solutions containing, as binder, polymers of vinyl acetate, styrene, butadiene, alkyl (math)acrylates, or (meth)acrylic acid optionally with alkyd resins, cellulose esters or shellac. The dielectric layer may be a non-conductive film, e.g. of copolymers of vinyl acetate and other vinyl monomers, optionally with clay, BaSO 4  or TiO 2 .
Patent GB-805945-A (GB)
Title: Improvements in photographic silver halide emulsions containing optical sensitizing dyes
IPC: G03C1/18
Filed: 1956-03-07
Abstract: 805,945. Sensitized photographic emulsions. KODAK, Ltd. March 7, 1956 [March 8, 1955], No. 7105/56. Drawings to Specification. Class 98(2) The sensitivity of a washed photographic silver chloride or chlorobromide emulsion containing a sensitizing dye of the general formula wherein R, R 1  and R 2  are alkyl groups, X is an anion and Z and Z 1  complete nuclei of the thiazole, benzthiazole, naphthathiazole, oxazole, benzoxazole, naphthoxazole, benzoelenazole, naphthselenazole or 2-quinoline series, is. improved by incorporating therein the chloride or bromide of cadmium or zinc in amount from 5 to 35 g. per mole of silver halide. The emulsions are further improved by including therein also a dye of the general formula wherein R 3  and R 4  are alkyl groups, Q completes an indanedione nucleus or a 5- or 6- membered heterocyclic ring such as barbituric acid, Z 2  completes a 5- or 6- membered heterocyclic nucleus and Z 3  completes a nucleus of the naphthothiazole or naphthaselenazole series. In the above formulae, R, R 1 , R 3  and R 4  may be methyl, ethyl or n-propyl, or R 3  and R 4  may be nbutyl, and Z 2  may complete a nucleus of the benzthiazole, naphthothiazole, benzselenazole, naphthoselenazole or naphthoxazole series. The cadmium and zinc chlorides or bromides are said also to stabilize the emulsion against fog. Specifications 412,309, 466,246, 740,770, 751,318 and 764,626 are referred to.
Patent GB-682102-A (GB)
Title: Improvements in and relating to bed-like supports
Inventor: GODDARD CECIL HENRY ALBERT
IPC: A47D7/00
Filed: 1950-03-22
Abstract: 682,102. Beds for animals. GODDARD & CO., Ltd., F. March 22, 1951 [March 22, 1950], No. 7159/50. Class 5(ii) A folding bed-like support for dogs and other animals comprises a rectangular frame 6 having pivoted thereto four legs 8 interconnected in pairs by feet 10, the legs having extensions 11 provided with offset portions 13, links 15 pivoted to the extensions 11 and a gapped upper frame 16, 17, 18 carried by the links 15. In erected position as shown the legs 8 slope outwardly and bear against stops 12 on the frame 6 while the links 15 bear against pins 14 on the offset portions 13. In the collapsed position the upper frame 16 .. 18 surrounds, in spaced relation, the frame 6, the legs and links being accommodated in the space within the frame. In the erected position a fabric &c. side wall may be secured by tapes &c. The frame 6 carries a fabric &c. supporting surface 7.
Patent GB-966063-A (GB)
Title: Improvements in and relating to stereoscopic viewing apparatus
Inventor: NELSON JAMES BOWMAN
IPC: G02B27/22
Filed: 1962-02-23
Abstract: 966, 063. Enlarger and stereoscopic microscope combined. MORGANITO RESEARCH & DEVELOPMENT Ltd. Jan. 24, 1963 [Feb. 23, 1962], No. 7191/62. Headings G2A and G2J. A stereoscopic viewing apparatus comprises a stage 7 for supporting a stereoscopic pair of slides 11, 12 and which can move orthogonally (in directions A, B by means of rod 5 on which it is mounted and frame 4 which is slidable on platform 3);slide 12 is further mounted on a slidable plate 16, means are provided for illuminating the slide; the slides are viewed by means of microscopes 24, 29 with adjustable interocular separation. Microscope 29 is mounted on a slidable bar 30 and the illuminating system comprising lamp 20, prism 27, and condenser 28 is similarly slidably mounted. The other illuminating system comprising lamp 20, prism 22 and condenser 23 is fixed. Above the microscopes and vertically adjustable is a camera or a focusing screen and a plate folder 34, depending on the optical components in the microscopes, and when eyepieces 31 are removed these can be lowered on to the microscopes so that a photograph can be taken. The microscopes may be provided with revolving objective changers.
Patent GB-566388-A (GB)
Title: Improvements in or relating to the gelatinisation of polyvinyl compounds
IPC: C08J3/18
Filed: 1943-05-06
Abstract: Gelatinisation of polyvinyl dispersions, said dispersions comprising polyvinyl compounds distributed uniformly in a finely divided condition, while avoiding pressure and/or heating, in a practically non-volatile plasticising agent in which they are scarcely soluble to insoluble at ordinary temperature, in which the gelatinisation is carried out at temperatures from 170 to 220 DEG  C. without the application of pressure.  Preferred polyvinyl compounds consist of high molecular weight polymers and interpolymers of vinyl chloride having a viscosity index (K-value) of more than 40.  Polyvinyl chloride is specified.  Plasticising agents mentioned are dibutyl phthalate, tricresyl phosphate and dihexyl phthalate.  Specification 500,298 is referred to.
Patent GB-307362-A (GB)
Title: Improvements in window fastenings
IPC: E05C9/08
Filed: 1929-03-05
Abstract: 307,362. Brevets d'Invention Soc. Anon., (Assignees of Beauverd, L.-L. Beauverd, E., and Beauverd, L.). March 5, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Multiple fastenings for hinged windows. -The operating rod of a French-window fastening is adjustable in length to adapt it to different heights of window. As shown a tubular member a having jointed thereto the handle b embraces a non-circular tube d with collars e, e<1> rotatable in bearing rings f, f<1> secured to the window. The catch members h, h' are secured to non- circular tubes or rods g, g<1> slidable, for adjustment purposes, within the tube d. Members g, g<1> have collars i, i<1> rotatable in fixed rings j, j<1>. Alternative constructions are described. Two catchcarrying rods are secured directly to the part a, or two catch-carrying members telescope together, the central member a being fixed to either of them, or a single tube or rod is used having a fixed catch at one end and a removable catch at the other.
Patent GB-767074-A (GB)
Title: Electrically inscribable lithographic offset printing plate
IPC: H04N1/23
Filed: 1955-03-11
Abstract: 767,074. Coated fabrics. CREED & CO., Ltd. March 11, 1955 [March 18, 1954], No. 7231/55. Class 140. [Also in Group XVI] An electrically inscribable lithographic offset printing plate comprises a base sheet 10 having thereon an adherent conductive ink-receptive layer 11 formed by evaporation of water from a uniform dispersion of finely-divided conductive carbon in a latex of at least one binder of the class consisting of resins and elastomers and which upon drying becomes substantially water-insoluble and ink-receptive, the binder being present in an amount which is at least equal to the amount of carbon by weight and having the property of binding the carbon particles to the sheet 10 without substantially interfering with the conductivity of the layer 11. The layer 11 is provided with a thin adherent coating 12 of such character as to be disintegrated in elemental areas thereof when subjected to electrical marking currents to expose the underlying ink-receptive carbon layer, the coating 12 comprising a pigment dispersed in a hydrophilic water-insoluble binder for receiving an ink-repellent solution. The base sheet 10 may be of non-conductive paper, fabric or plastic and the ratio by weight of binder to carbon is from 1: 1 to 2: 1. The binder may consist of acrylic resin, styrenated butadiene, polystyrene, neoprene, acrylonitrile-butadiene, polyvinyl acetate, polyvinyl chloride and natural rubber. The surface coating 12 is formed by evaporation of the water from an aqueous solution of a water-soluble binder, e.g. polyvinyl alcohol, carboxymethyl cellulose, casein, gum arabic and albumen, which is insolubilized. Mixtures of cuprous thiocyanate, zinc sulphide and/or zinc oxide are preferably employed as pigments, in the ratio of three parts of pigment to. one part binder. The thicknesses of the base 10 and layers 11 and 12 are of the order of 2.5-3 mils., 0.8-1.2 mils 0.7-1.25 mils. respectively.
Patent GB-678465-A (GB)
Title: Improvements in and relating to machines for propelling abrasives
IPC: B24C5/06
Filed: 1950-03-23
Abstract: 678,465. Sand-blast. JACKMAN & CO., Ltd., J. W., and NEVILLE, F. W. March 20, 1951 [March 23, 1950], No. 7244/50. Class 60. Apparatus for propelling abrasive comprises a hollow rotating member open at one side and with a divergent wall on which are mounted at intervals vanes of thick section, the rear faces being approximately radial and the front faces curved to ensure that the gaps between the blades will be smallest at the periphery of the rotating member. An impeller 5 made of hard cast metal has a diverging internal face 6 on the inside of the wall 7 which has vanes 8 cast integral with it. The vanes 8 are of thick section; the rear or following face 9 of each vane is approximately radial and the front or leading face 10 is curved so that the space between it and the next vane is narrowest at the periphery and widens to the inside of the impellor. The vanes 8 project above the top edge of the divergent face 6, and the spaces between them narrow from their bottom edges to the top edge of the face 6 so that abrasive falling on the face 6 from delivery pipe 11 is forced up a narrowing passage as it ascends the face 6 under centrifugal force till it is hurled out through the narrowest part of the openings 12 above the top edge of the divergent face 6. The impellor 5 is bolted to a driving plate 13 by three bolts 14, the underside of the impellor being provided with three projecting portions 15 around the bolts to contact a flat rubber ring 16 inserted in a recess in the driving plate 13. The outside of the impellor has three pads 17 fitting accurately within the machined rim of the plate 13; the projecting portions 15 are open at one side at 18 so that when the bolts 14 are slackened, the impellor may be given a small angular movement and released, thus facilitating renewal of a worn part. Abrasive material is fed to a hopper by gravity or an air stream or any other suitable means and passes down the delivery pipe 11 whose open end 23 lies parallel with the diverging wall 6 of the impellor 5; the side of the delivery pipe 11 is cut away on the leading side to discharge abrasive in the direction of rotation of the impellor. The discharge end of the pipe at 23 is placed so that it lies just within a circle bounded by the inner edge of the vanes 8. More than one abrasive supply pipe may be used; they may be fixed or adjustable about the centre of the impellor to vary the point of inlet and therefore of discharge from the impellor. Specification 469,451 is referred to.