baber/WOPTO huggingface dataset:
Patent GB-141870-A (GB)
Title: Improvements in and relating to the control of electric motors
IPC: H02P1/04
Filed: 1919-03-22
Abstract: 141,870. Brooke, W., and Kerr, E. M. March 22, 1919. Master control systems.-In an automatic control system, a series or accelerating relay acts as an overload relay which remains closed while the current is normal, but which opens under an overload, leaving previously-actuated contactors closed and preventing further actuation of any contactors. In the arrangement shown in Fig. 2, the operating-windings 7a - - 11<a> of the main and resistance contactors are connected with their maintaining-resistances between the master controller and the negative lead l<2>. The relay 14 has a series winding 12 with a fixed core 15 and a movable core 16, the latter being attached to a contact lever 17 pivoted on a pin 18 and held by a spring 20 against a fixed contact 19. The spring is fixed to a cradle 21 which can be moved round its pivot 23 by means of a screw 24 and nut 26 to vary the inclination of the spring to the arm 17, and so to vary the setting of the relay. A scale 28 with a pointer 29 indicates the current strength at which the contacts 17, 19 open. The lower part of the relay consists of a laminated horseshoe magnet 31 with an armature 32 on a hinge 33 and carrying a contact 36 held against the contact 19 by a spring 50. The horseshoe has an energizing-coil 34 which is normally short-circuited by the contacts 17, 19. When the controller 13 is turned to its full-on position, the current in the coil 7a closes its contactor to com. plete the motor circuit. The closure of the auxiliary switch 7b completes the circuit of the actuating-coil 8<a> of the first resistance contactor without the resistance 8<c>. The contactor operates and the remainder of the contactors follow in proper sequence. If at any time the motor current rises to an excessive value, the contacts 17, 19 are opened by the series coil 12 to break the short circuit round the shunt coil 34. The contacts 36, 19 are then opened to insert the resistances 8<c> - - 11<c> in series with the contactor windings. The contactors which are already closed are held closed, but the resistances cut down the currents in the actuating-coils to prevent any more from closing. In a modification, additional auxiliary switches operated by the contactors connect the resistances 8<c> - - 11<c> in maintaining- circuits for the contactors. In another modification, these resistances are replaced by a single resistance connected across the contacts 19, 36. Contactors controlled as described may be used with reversible motors and with alternating-current motors.
Patent GB-635000-A (GB)
Title: Improvements in or relating to electromagnetic waveguides
IPC: H01P1/08
Filed: 1947-03-14
Abstract: 635,000. Wave-guides. M-O VALVE CO., Ltd., and KETTLEWELL, E. March 14, 1947, No. 7232. [Class 40 (viii)] A wave-guide is sealed by a sheet of dielectric material extending across the guide of thickness equal to a half wavelength in the dielectric. As shown, the rectangular output wave-guide'1 of a magnetron terminates in a circular flange 2 which fits tightly into a circular tube 4 soldered to the magnetron block. The flange 2 is provided with an annular recess 3 of diameter greater than the smaller dimension of the guide by a half-wavelength in air and a quarterwavelength deep. A glass disc 7 is attached to an annular seating 6 in the tube 4 to form a vacuum seal in a plane normal to the length of the guide. The window 7 is a half-wavelength in the glass in thickness. The guide 1 may be connected to a second rectangular guide 8 provided with a flange having an annular recess similar to the recess 3.
Patent GB-1467221-A (GB)
Title: Papermaking pulp
IPC: D21H17/10
Filed: 1975-02-21
Abstract: In order to prevent resin exudations in the manufacture of paper, paperboard and cardboard, a phosphonic acid compound is added alone or together with aminopolycarboxylic acids and/or hydroxy acids or alkali metal salts thereof in quantities from 0.02 to 1.0%, relative to dry stock, to the resin-containing cellulose pulp or wood pulp during processing. In place of the aminopolycarboxylic acids and/or hydroxy acids, or additionally thereto, orthophosphoric acid and/or polyphosphoric acids or alkali metal salts thereof can be added.
Patent GB-1588372-A (GB)
Title: Waterinsoluble azodyes
IPC: C09B29/42
Filed: 1978-02-24
Abstract: The new dyes conform to the formula I, wherein the substituents D, X, R1, R2 and R3 are each as defined in Claim 1. The new dyes are suitable in particular for dyeing and printing hydrophobic synthetic materials in high colour strength with excellent fastness properties. They are prepared by diazotising amines of the formula D-NH2 which are free of ionic groups and coupling with 3-cyano-6-hydroxy-2-pyridones of the formula III, which are likewise new compounds. <IMAGE>
Patent GB-548235-A (GB)
Title: Improvements in cathode ray tubes
IPC: H01J29/48
Filed: 1941-06-13
Abstract: 548,235. Cathode-ray tubes. STANDARD TELEPHONES & CABLES, Ltd. June 13, 1941, No. 7501. Convention date, June 25, 1940. [Class 39 (i)] In a cathode-ray tube a concave cathode 33 is mounted on a plate 35 within an anode 28 provided with apertured partitions 36, 37, 47 ; a cross-over of the beam is formed between the partition 36, 37 and a modulator electrode 29 is situated at the cross-over. Insulating rings 43, 44 support the electrode 29, the lead to which passes through a hole in the anode 28. A further anode 30 with apertured partition 50 is carried by an insulating ring 48 on the first assembly and extends into an anode 18 carried by an extension 19 of the envelope 10; the anode 18 has spring fingers bearing on a graphite coating on the envelope and extending towards the fluorescent screen. Two pairs of deflecting plates 20 are supported from the anode 18 the leads 22 from the plates passing terminals 23 in an annular base under the recessed part of the envelope. In a modification a single anode 53, Fig. 4, is used beyond the partition 47 and a target 56 is carried by a mica disc 55 from arms 54. Reference is made to U.S.A, Specification 2,141,387.
Patent GB-230282-A (GB)
Title: Improvements in nut locks
IPC: F16B39/10
Filed: 1924-03-24
Abstract: 230,282. Bosanquet, E. F. S. March 24, 1924. Locking nuts. - A securing-nut is a fishplate joint &c. is locked by a washer of the type in which a part thereof is bent outwards after the nut is screwed home, to engage the sides or angles of the nut, the part being separated by slots or slits from the main body of the washer. According to the invention, the bendable part 11 of the washer 7 has two nicks 12 formed in its longitudinal sides without removing any of the metal from the washer, which nicks engage the angles of the nut when the part 11 is bent outwards. In a modification, the part 11 is formed by a longitudinal slit and two inclined transverse slits which engage the nut on three sides and extend to the opposite edge of the washer. Tongues or projections may be pressed out of the washer at right-angles to each other to engage slots in the work and prevent rotation of the washer.
Patent GB-542166-A (GB)
Title: Manufacture of polymerisable materials
IPC: C07F7/22
Filed: 1940-04-26
Abstract: 542,166. Carboxylates. DU PONT DE NEMOURS & CO., E.I. April 26, 1940, No. 7525. Convention date, April 26, 1939. [Class 1 (iii)] [Also in Group IV] Polymerizable materials are made by re-acting a halide of silicon or tin in the tetravalent state with an alkali metal or alkaline earth metal salt of an α-methylenemonocarboxylic acid. The products have the general formula (CHR= CR<SP>1</SP>COO] x  MR<SP>2</SP>y where R and R<SP>1</SP> represent hydrogen or a monovalent hydrocarbon radicle, R<SP>2</SP> is hydrogen, halogen or a monovalent hydrocarbon radicle, M is silicon or tin, x is an integer from 1 to 4, and x+y=4. In examples, (1) potassium methacrylate is stirred with silicon tetrachloride in benzene ; the product, silicon tetramethacrylate, polymerizes to a clear brittle resin on heating with or without addition of benzoyl peroxide ; interpolymers with styrene and methyl methacrylate are described, (2) potassium methacrylate is reacted with trimethyltin chloride in benzene; the product, trimethyltin methacrylate, can be interpolymerized with negatively substituted polymerizable compounds containing the CH 2 =C< group, and (3) potassium methacrylate is re-acted with stannic chloride in benzene; the product, tin tetramethacrylate is interpolymerized with styrene and methyl methacrylate. Other tin and silicon halides specified as starting materials are silicon fluoride, silicochloroform, tricyclohexyltin chloride, tri-p-xylytin bromide, tribenzyltin chloride, tripropyltin iodide, dimethyltin dichloride, diphenyltinchlorobromide and methyltin tribromide. These may be re-acted with any alkali or alkaline earth metal salts of acrylic, methacrylic, a-chloroacrylic, a-phenylacrylic, crotonic, tiglic, cinnamic, L-chlorocrotonic, angelic, α-ethylcrotonic, α-butylacrylic, or α-octylacrylic acids. The products may be polymerized by heating,'with or without oxygenyielding catalysts, e.g., benzoyl peroxide, oxanidole or pinene peroxide, to insoluble and infusible resins. They can also be interpolymerized with polymerizable compounds containing the radicle CH 2 =C<<SP>a</SP> b  , where a is a negative radicle, e.g. halogen or an organic radicle containing a carbon atom joined to another atom by a plural bond, said carbon atom being removed by not more than one atom from the ethenoid radicle, and b is hydrogen, halogen or a hydrocarbon radicle. Examples of such compounds are vinyl esters, ethers and ketones ; arylvinyl compounds where the vinyl group is directly attached to a nuclear carbon atom, e.g., styrene, and x-methylene monocarboxylic acids and their esters, amides and nitriles. The Specification as open to inspection under Sect. 91 comprises also the preparation of corresponding compounds from germanium and lead, and specifies plumbic chloride, trimethyllead bromide, dimethyllead dibromide, triphenyllead bromide, methylethyllead dichloride and triphenyl germanium bromide as starting materials. This subject-matter does not appear in the Specification as accepted.
Patent GB-1149697-A (GB)
Title: Photosensitive acetylenic polymers
Inventor: HAY ALLAN STUART
IPC: C07C45/71
Filed: 1968-02-15
Abstract: 1,149,697. Photosensitive polymers and polymeric compositions. GENERAL ELECTRIC CO. 15 Feb. 1968 [20 March, 1967], No 7527/68. Heading C3R. [Also in Division G2] The invention comprises (a) a photosensitive composition of a ketone having an aryl group directly attached to the carbonyl group and an acetylenic polymer of formula where m is 0 or 1, n is an integer and is at least 10, and when m is 0 R is alkylene, arylene, alkyl substituted arylene, haloarylene or alkyl substituted haloarylene, and when m is 1 R is arylene, alkyl substituted arylene, haloarylene, alkyl, substituted haloarylene or -R<SP>1</SP>-X -R<SP>1</SP>- where R<SP>1</SP> is phenylene, alkyl substituted phenylene or halophenylene and X is -O-, where R<SP>111</SP> is hydrogen or alkyl; (b) photosensitive polymers of formula where n is as above, R<SP>a</SP> is a group of formula where R<SP>b</SP> is arylene, R<SP>c</SP> is a trivalent aromatic hydrocarbon radical and R<SP>d</SP> is alkyl or aryl; and (c) photosensitive copolymers containing both types of units described in (a) and (b). The presence of the ketone in the composition (a) and of the ketone group in the polymers of (b) and (c) photosensitizes the polymer so that on exposure to ultraviolet light the polymer crosslinks and becomes insoluble. The polymers may be dissolved in suitable solvents, together with the ketone when required, and the solutions used to form films on substrates, the films being exposed to ultraviolet light while certain portions of the film are masked, the unexposed portions subsequently being dissolved leaving the exposed areas which may be used as a resist e.g. in etching or plating operations on the substrate, or the polymer remaining may be thermally decomposed to carbon to provide electrically conductive circuits. The polymers are prepared from acetylenic monomers, by reaction with oxygen in the presence of a basiccupric-amine complex, the terminal hydrogen atoms being removed so that the acetylenic group of one monomer is joined to the acetylenic group of another monomer. Examples are given.
Patent GB-180457-A (GB)
Title: Improvements in fuel economisers for insertion in saucepans, kettles or the like
IPC: F24C15/10
Filed: 1921-03-10
Abstract: 180,457. Robertson, H. S., and Beddous, J. March 10, 1921. Convection currents, promoting.- -To promote the circulation of liquids heated in a saucepan, kettle, or like, an imperforate plate of sheet metal is inserted so as to lie close to be bottom of the vessel. The plate may be either flat, corrugated, or ribbed radially, and is provided with stud-like projections b for supporting it within the vessel.
Patent GB-1055094-A (GB)
Title: Novel phosphorus-containing esters
Inventor: OSBORNE GRAHAM OLIVER
IPC: C07F9/553
Filed: 1965-02-23
Abstract: The invention comprises compounds of the general formula <FORM:1055094/C2/1> wherein R1 represents a phenyl group optionally bearing one or more halogen atoms (e.g. chlorine); R2 represents an alkoxy group; and R represents an aryl or aralkyl group optionally bearing one or more halogen atoms (e.g. chlorine), nitro groups, or alkyl or alkoxy groups containing 1-4 carbon atoms or a combination of said atoms or groups.  Examples of R are phenyl, benzyl, phenylethyl, phenylpropyl, phenylbutyl and halogen, nitro, alkyl or alkoxy derivatives thereof.  They may be prepared by reacting a compound of the general formula <FORM:1055094/C2/2> or its alkali metal derivative with a compound of the general formula (R1)(R2)P(S)Cl in the presence of a hydrogen halide acceptor, R, R1, R2 having the meanings defined above.  The hydrogen halide acceptor may be a nitrogenous base, e.g. pyridine, lutidine, triethylamine or ammonia, or an alkali or alkaline earth metal carbonate.  An inert liquid reaction medium may be used, e.g. an aliphatic ketone or ester, benzene, chloroform or carbon tetrachloride. The reaction temperature is suitably between 0 DEG  C. and 150 DEG  C.  The products have insecticidal properties (see Division A5).ALSO:An insecticidal composition comprises a carrier and/or a surface active agent, and an organic compound of the general formula: <FORM:1055094/A5-A6/1> wherein R1 represents a phenyl group optionally bearing one or more halogen atoms; R2 represents an alkoxy group; and R represents an aryl or aralkyl group optionally bearing one or more halogen atoms, nitro groups or alkyl or alkoxy groups containing 1-4 carbon atoms or a combination of said atoms or groups (see Division C2).  The carrier may be a solid, liquid or compressed gas.  Examples are clays, silicates, synthetic hydrated silicon oxides, resins, waxes, synthetic polymeric materials, carbon, sulphur, water, alcohols, ketones, aromatic hydrocarbons, chlorinated hydrocarbons, suitable petroleum fractions, or those compressed gases usually used in insecticidal aerosols, e.g. trichloromonofluoromethane or dichlorodifluoromethane.  The composition may be formulated as a wettable powder, dust, granules, concentrate, solution, emulsifiable concentrate, emulsion, invert emulsion, aerosol, or an encapsulated material and known pesticides and/or fertilizers may be present.  The active compounds may be used to combat insects by applying them or an insecticidal composition containing them to the insects or their habitat.
Patent GB-251074-A (GB)
Title: Improvements in or relating to means for connecting electric conductors
IPC: H01R4/32
Filed: 1925-03-23
Abstract: 251,074. Collins, F. V., and Mayersbach, L. F. March 23, 1925. Connectors. - Electric wires are connected together by means of eyeterminals B attached to the conductor by means of a transverse hole D in the shank A, and a gripping nut C that screws on the shank. Two or more conductors are connected by passing a bolt through the eye-terminals.
Patent GB-364426-A (GB)
Title: Improvements in and relating to the dressing of coal and the like
IPC: B03B4/02
Filed: 1931-03-13
Abstract: 364,426. Separating solid materials. HUMBOLDT - DEUTZMOTOREN AKT.- GES., (formerly MASCHINENBAU - ANSTALT HUMBOLDT), 161, Kalker Hauptstrasse, Kalk, Cologne, Germany. March 13, 1931, No. 7769. Convention date, March 20, 1930. [Class 117.] An apparatus for dressing coal &c. of the kind comprising an air-pervious jigging support o<1> over which the material is passed so as to stratify according to density, and which is provided with ribs b tending to guide the material to the centre, the support is formed with a central strip c hinged at its rear end and adjustably inclined towards the discharge end, and a wedge-shaped scraper q is adjustably mounted over the discharge end of the strip c to divert the upper layer of material to the lateral discharge ports r. Adjustable wedge-shaped strips n are disposed over the central strip c to spread the material sideways. A secondary separation of the intermediate and refuse products is obtained by an adjustable flap s with air pervious bottom and converging sides. This flap may be formed of zig-zag or sinuous shape, Fig. 6 (not shown). The air chamber under the table is divided into compartments with separate aircontrol valves h. In order to allow adjustment of the central strip, the division walls of the compartments are made partly of flexible material k. The air supply to the chamber u of the discharge flap may be taken from the adjacent chamber d of the main part of table and is controlled by a valve w.
Patent GB-831518-A (GB)
Title: Improvements in or relating to turbine or pump installations employed in tidal flows
Inventor: DUPORT PIERRE
IPC: F03B13/26
Filed: 1957-03-08
Abstract: 831,518. Hydraulic turbines; axial-flow pumps. ETABLISSEMENTS NEYRPIC. March 8, 1957, No. 7833/57. Drawings to Specification. Classes 110 (1) and 110 (3). [Also in Group XXIX] An installation for use in a tidal flow having a number of turbine or pump units in which all the units can simultaneously operate in one or the other direction of flow or in both directions of flow as turbines or pumps has some of the units equipped with blades having a concavity in one direction of flow and the remaining units with blades having a concavity in the other direction of flow. The turbines or pumps may be provided with blades that may be mounted on the hub to face in either direction. This may be achieved by providing blades which may be keyed in either of two positions at 180 degrees to one another on their control lever, by blades which may be attached to the boss in two positions at 180 degrees to one another by pins or by effecting assembly of the blades by a plate having symmetrical apertures.
Patent GB-325138-A (GB)
Title: Improvements in sheet separating mechanisms
IPC: B65H3/08
Filed: 1929-03-11
Abstract: 325,138. Marks, Sir G. C., (Harris- Seybold-Potter Co.). March 11, 1929. Sheet-separators.-Sheets are separated from a pile for feeding to printing presses and the like by means of a vertically movable suction separator 21 attached to a hollow piston 14 movable in a cylinder 13 and normally held in a raised position above the pile 6 by means of a latch 27 engaging a shoulder 30 formed by a recess in a rod 24 attached to the piston 14 and guided by an apertured flange 24a secured to the cylinder 13. A spring 16 in compression tends to depress the piston 14 to bring the sucker 21 into contact with the pile, and the latch 27 is released, when air is exhausted from a pipe 42, by air pressure on a piston 26 to which the rod 27 is attached, the piston being moved to the left against the action of a spring 35. The rod 27 is fitted loosely in guides so as to permit passage of air past it. On release of the latch, the piston 14 is depressed by the spring 16, and the sucker 21 acts on the top sheet which has been previously buckled by a combing roller 7 and a presser 8 which also acts to blow air between the sheets to facilitate separation of the top sheet only by the raising of the sucker 21 to its original position. This raising is effected by air pressure on piston 14 when an annular groove 44 in piston 26 connects a passage 45 at the top of cylinder 13 with a passage 40 connected to the suction pipe 42 which is intermittently connected to an exhaust device in known manner. The front edges of the sheets are also acted on by suction devices which are reciprocated to cause the separated sheet to engage feed rolls.
Patent GB-944678-A (GB)
Title: Line spacing mechanism for ten-key adding and calculating machines
IPC: B41J29/18
Filed: 1962-02-28
Abstract: 944,678. Typewriters. WALTHER BUROMASCHINEN G.m.b.H. Feb. 28, 1962, No. 7893/62. Heading B6F. Platen rotation; line spacing mechanism.-A line spacing mechanism, for a ten-key adding or calculating machine, having a laterally non- shiftable platen 5, is provided with a linkage mechanism to rotate the platen first in a direction contrary to normal paper feeding direction, before an impression is made, and then in the normal paper feeding direction by a selectably adjustable amount of line spaces, there being an arresting element 14, adapted to remain in engagement with an arrester wheel 7, during rotation of the platen in the normal paper feeding direction, so as to prevent the platen from overshooting the selected number of line spaces. The line spacing mechanism comprises a mainshaft 29 rotating in the arrowed direction, whereby a roller 26 of an eccentric 28, mounted fixedly on the shaft, pivots a lever 19 counter clockwise to displace a link 17, whose one end engages a pin 16 on a pivotally mounted lever 11, causing the arresting element 14, a roller, to rotate the platen 5 two tooth divisions contrary to the normal paper feeding direction (in Fig. 3, not shown). Simultaneously two cam discs 37, 38 co-operating with rollers 33, 34 have pivoted a bifurcated lever 30 clockwise permitting a line space lever 43 to be drawn by a spring 44, against a baseplate 4 of the paper carriage, in readiness for forward rotation of the platen. When impression has been made the lever 19 is returned by a spring 21 to its original position in Fig. 1, and the cam discs 37, 38 return the lever 30 to its former position, the retraction of the line space lever 43 causing a finger 46, thereon, to engage the teeth of a ratchet wheel 6 to thereby rotate the platen 5 in the normal paper feeding direction by the same number of line spaces it has been rotated previously, the arresting element 14 being disengaged from the arrester wheel 7. Continued retraction of the line space lever 43, causes an edge 55 (Fig. 3, not shown) to co-operate with a pin 12, upon which the arresting element is mounted, whereupon the lever 11 is returned to its former position and during this movement the arresting element re-engages the teeth of the wheel 7, whilst the finger 46 co-operates with the teeth of the ratchet wheel 6 and both together rotate the platen in the feeding direction by the remaining number of line spaces.
Patent GB-416496-A (GB)
Title: Improvements in or relating to valves for fluid pressure engines
IPC: F01L1/28
Filed: 1933-03-15
Abstract: 416,496. Valves; valve gear. MARCH, C. E. M., Penny Oak, Fulmer Road, Gerrard's Cross, Buckinghamshire. March 15, 1933, No. 7900. [Class 7 (vi).] Exhaust of fluid-pressure engines and compressors through passages B<1>, B<3> is controlled by a tubular slide valve D, and inlet through ports C, D<4> and the interior of the valve D is controlled by a poppet valve E seating on the inner end of the valve D. The valve D, which may also have a seating at its inner end, is held in the closed position shown by a pair of cams J acting through two rockers H, and is opened, when the cams allow this, by two springs bearing on arms extending from opposite sides of the valve. A third cam J<2> actuates the inlet valve E through a rocker K.