baber/WOPTO huggingface dataset:
Patent GB-755147-A (GB)
Title: Production of aminoplast condensation products
IPC: B01J39/18
Filed: 1954-05-25
Abstract: Modified aminoplast resins are obtained in bead form by heating with agitation an aqueous solution or suspension of the aminoplast with an anionic polyelectrolyte which is a polymer or copolymer of an ethylenically unsaturated carboxylic acid in acid, alkali metal or alkaline earth metal salt form and which is free from amino, amido, imino or imido groups, has a molecular weight of at least 10,000 and, when a copolymer, contains at least 25 mol. per cent of the acid. Specified nitrogen compounds from which the aminoplasts may be prepared are urea, thiourea, dicyandiamide, melamine, ammeline, hexamethylene diamine, phenylene diamine, 2-oxo-4,5-di-imino parabanic acid, guanidine and biguanides. These may be condensed with formaldehyde, acetaldehyde, butyraldehyde, heptaldehyde, octaldehyde, benzaldehyde, furfural, acetone, methyl ethyl ketone or cyclohexanone.  The resins may be modified by reaction with alcohols, phenols and aryl sulphonamides, e.g. by forming an ether.  Suitable polyelectrolytes are copolymers of vinyl and vinylidene compounds free from groups which ionize, e.g. vinyl acetate, isobutylene and styrene, with maleic, fumaric, citraconic and itaconic acids, and polymers and copolymers of acrylic and a -substituted acrylic acids. The electrolyte may constitute 1 to 50 per cent by weight of total solids.  The aminoplast resin is generally at or near the point of incipient insolubility in water when the polyelectrolyte is added and heating is maintained at 80 DEG  to 100 DEG  C. until several minutes after a haze appears.  Emulsifiers such as glyceryl ricinoleate and sodium oleate may be included in the reaction mixture.  The resulting resins may be recovered by filtration and are useful as moulding powders.  They are permanently self-dispersing in aqueous media and the polyelectrolytes cannot be washed out of the beads with hot water.  If a large proportion of polyelectrolyte, e.g. 25 to 50 per cent by weight of the aminoplast, is used and heating continued until the resin is cured, the product is suitable as an ion-exchange resin.
Patent GB-751421-A (GB)
Title: Tipping apparatus for unloading vehicles
IPC: B65G67/00
Filed: 1954-05-25
Abstract: 751,421. End tippers; stops for vehicles. SOC. PER AZIONI FORNI ED IMPIANTI INDUSTRIALI INGG. DE BARTOLOMEIS. May 25, 1954 [June 24, 1953], No. 15363/54. Class 78 (4). The mechanism for endtipping a platform 1 to unload a vehicle on it acts through a lever 16 which it first turns about its pivot 18 on the platform into a position; defined by a stop 22, in which the end 21 of the lever engages the wheels of the vehicle to lock it on the platform. As illustrated the lever 16 is pivoted at 20 to a pair of rack sectors 9 mounted for rotation about the trunnions 5 from which the platform 1 is suspended and driven by a pinion 13 to tilt the platform. Members 11, 12 guide the sectors 9. The stop 22 is eccentrically mounted on the platform 1 so that it may be adjusted by a lever 23 to suit differing sizes of wheels and the wheels are located on the platform by fixed chocks 26. A tie 27 may further restrain the vehicle.
Patent GB-791419-A (GB)
Title: Improvements in baling presses
IPC: A01F15/10
Filed: 1956-05-17
Abstract: 791,419. Baling-presses. WELGER, O., WELGER, K., and NESTLER, H. [trading as WELGER, GEB.]. May 17, 1956 [June 13, 1955], No. 15365/56. Class 94(1). In a baling-press having a reciprocating piston 6, straw is delivered to a hopper 4 by an elevator 3 and fed into the compression chamber 5 by prongs 7 which are moved in a curved path X by crank and lever-mechanism 8-10 which is disposed in the angle between the rear wall of the hopper and the elevator. The chamber 5 is of rectangular cross-section with its longer sides horizontal and the binding mechanism 11 is mounted on the cover of the chamber adjacent the front wall of the hopper 4.
Patent GB-581199-A (GB)
Title: Improved starting arrangements for electric discharge lamps
IPC: H05B41/32
Filed: 1944-08-11
Abstract: 581,199. Supply systems for space discharge apparatus. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and ALDINGTON, J. N. Aug. 11, 1944, No. 15380. [Class 38 (iv)] The supply to the main electrodes C and A of an intermittently operated discharge lamp L is shunted by a capacitance MK and a series connection comprising a starting capacitance SK and resistance SR, whereby SK is connected over a contact closing device SC between electrode C and auxiliary electrode AE. The supply is derived from A.C. mains through the secondary of transformer TR and diode D, which becomes conducting on closure of switch DC, to charge condensers MK and SK respectively. Closure of contacts SC causes SK to initiate partial ionisation of the lamp filling sufficient to permit discharge of condenser MR between main electrodes C and A. The discharge is extinguished when discharge, voltage of MK falls below that needed to maintain it. Contacts SC may be manually operated at will or controlled by mechanical or other means. The distance between AE and C is preferably not greater than one quarter of that between A and C. Electrode C and, if desired, AE also may be activated, e.g. by admixture of thoria.
Patent GB-328471-A (GB)
Title: Improvements in weighing apparatus
IPC: G01G1/26
Filed: 1929-05-17
Abstract: 328,471. Fitzpatrick, H. D., (Naamlooze Vennootschap Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen). May 17, 1929. Loose-weight apparatus. - The weighing capacity of apparatus with automatic duplex load counter-balancing devices is increased by the direct application of a supplementary weight or weights to the rod actuating said devices. In the form shown, Fig. 1, the weighbeam 3 supports a roller segment 30 on which bears a push rod 4 operatively connected to the flexible bands 9 of the counter-balancing devices 6, 7. The push rod 4 carries a weights plate 10 on to or from which the weights 11<a>, 11<b> may be lowered or lifted; these weights are carried by a cage 12, Fig. 2, provided with rollers 15 co-operating with a frame 16 adapted to guide its movement when moved by the hand-lever 22. A resilient pawl 18 co-operates with notches 17 in the frame 16 to fix the cage in different positions. Alternatively, the supplementary weights may be placed on the platform 46 on the top of the member 47 of the rod 4. To prevent lateral forces on the rod adversely influencing the weight indications, the rod 4 is provided with a crank arm 32 and a member 33, Fig. 3, on which are mounted rollers 34 engaging a slot 35 in a member 36 connected by crossed flexible strips 39 to a segment 38 on the end of the weighbeam. For the sake of clearness the segment 38 is shown to one side of the plane of the knife-edge 31, but is actually in the same plane. A tare-beam 42 with a moving poise 45 may be provided.
Patent GB-277131-A (GB)
Title: Improvements in and connected with photographic camera focusing appliances
IPC: G03B19/04
Filed: 1926-06-19
Abstract: 277,131. Dunnett, D. C., and Greenhough, W. H. June 19, 1926. Focusing-devices. - Relates to devices of the kind in which an opening in the camera back 1 is fitted with a movable focusing screen 2 which is moved towards and from the focal plane through which a film moves by means of a hinged shutter or flap 4 which covers the opening in the back 1 for exposures. According to the invention, and in order primarily to obviate entrance of light through the back, the focusing screen 2 and the hinged flap 4 are mounted on a flanged frame 6 secured to the back 1 by bolts 16. The frame 6 is fitted at the upper part with a plate 9, and the resilient plate 3 carrying the screen 2 is adjustably mounted by plates 12, 14 and screw bolts 13 passing through vertical slots in the plate 9 and frame 6, the slots being completely covered by the plate 9. Hinged plates 23, 25 are bolted to the plate 9 and flap 4 respectively, the plate 25 having a curved extension passing behind the hinge 5. The frame 6, plate 9 and 23 are also slotted at 10 to allow the passage of a shaped cam 19 on a back plate 29 adjustably mounted by slots and screw bolts 33 screwing into an inside covering plate 32. The end of the cam 19 is shaped so that the resilient plate 3 holds the flap 4 open for focusing. The flap 4 has flanges 4<x> on two sides and the bottom, and a similar inner frame 21 is secured thereto leaving a channel which the flange 8 of the frame 6 enters when the flap is closed for exposures. Alternatively, the channel formation may be on the frame 6. Flexible focusing curtains are secured between the sides of the frames 6 and the flap 4. The resilient plate 3 completely covers the slot 10 through which the cam 19 extends, and has at the bottom bolts 35 passing through the frame 6, the bolt-heads 36 limiting the forward movement of the focusing screen 2. In the retracted position of the screen 2, the heads 36 pass through openings in a shaped plate 37 which also has an opening with which a spring catch 40 in the flap engages to hold the flap closed. The screen 2 passes through an opening 7<x> in an inner plate 7 over the front of which the film passes.
Patent GB-1329341-A (GB)
Title: Process for the production of copies
IPC: G03G9/06
Filed: 1971-05-18
Abstract: 1329341 Electro-photography J M E  BEAUJEAN 18 May 1971 [19 May 1970] 15561/71 Heading G2H A charge image on an insulative film 4 is developed with a conductive liquid (e.g. water) in contact with a source of constant potential, the conductive liquid image-bearing film being used as a litho plate. The film is in integral or temporary contact with a photo-conductive member 1 having complementary grooved areas 2 and coated areas 3, the coating being of conductive material. The depth of the grooves may be greater than half the thickness of member 1. The conductive areas may be earthed during uniform charging and grounded during and after imagewise exposure.
Patent GB-903489-A (GB)
Title: Improvements in or relating to core elements for nuclear reactors
Inventor: STERRY FRANK
IPC: G21C3/04
Filed: 1958-05-14
Abstract: 903,489. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. April 30, 1959 [May 14, 1958], No. 15577/58. Drawings to Specification. Class 39 (4). In a gas-cooled nuclear reactor having fuel elements of the type described in Specification 850,015 the fuel is arranged in vertical graphite tubes which have a bent at the lower end for continuously drawing off of the volatile fission products. To prevent back diffusion of the fission products outwards through the graphite pores of the tube into the coolant gas, a small amount of the latter is permitted to flow into the tube, through a controlled leak, to dilute the fission products. The graphite tubes are treated as described in Specification 901,847.
Patent GB-960668-A (GB)
Title: Apparatus for measuring direct current in a cable
IPC: G01R15/20
Filed: 1962-04-24
Abstract: 960,668. Current measurement. GENERAL PRECISION Inc. April 24,1962 [May 1, 1961; Oct. 5,1961], No. 15600/62. Heading G1U. Apparatus for measuring direct current in a cable 24 comprises a Hall crystal 23 (Fig. 5) situated in an air-gap in a magnetic circuit adapted to encircle the cable. The crystal is excited by an A. C. source 25 which is also connected to a demodulator 33 receiving the Hall voltage by way of an amplifier 32. The D. C. output of the demodulator is applied to a coil 30 whereby an m. m. f is established in the magnetic circuit in opposition to that due to the current in the cable 24. The gain of the amplifier and the number of turns in the coil 30 are sufficient effectively to reduce the flux in the magnetic circuit to zero, whereby the current in the cable 24 is given by the product of the number of turns the coil 30 and the current in that coil indicated by an ammeter 34. The magnetic circuit comprises two pole pieces 19a, 196 attached to a handle 10, and a movable armature 20 mounted on a pivoted member 13 which is biased towards the position shown in Fig. 1 by a spring 18. The Hall crystal is placed between the pole pieces 19a, 19b and connections to it are made by means of a flexible lead passing through an opening 14. The polepieces 19a,19b and the armature 20 are provided with interleaving members (Fig. 4, not shown).
Patent GB-558404-A (GB)
Title: Improvements in or relating to lifesaving waistcoats
IPC: B63C9/115
Filed: 1942-11-05
Abstract: 558,404. Life-saving garments. CROSSLAND, HUGHES & CO., Ltd., and MACKENZIE, E. D. Nov. 5, 1942, No. 15623. [Class 141] A life-saving waistcoat, particularly of the kind described in Specification 554,052, is provided with means engageable by a boat hook and comprising a length of rope formed into a loop 1 and passing through guide tapes 2, 7, the free ends 8 being adapted to be tied around the wist of the wearer. The rope is knotted adjacent the tapes 7 as shown, or tied to them to prevent dislodging the loop 1, which is preferably buoyant, and which normally is tucked inside the back of the waistcoat and held by a loop 6. In another, construction, where the waistcoat comprises two side portions connected to a back portion, the rope is threaded through open hems in the lower portion of the armholes.
Patent GB-594376-A (GB)
Title: Improvements in or relating to shell type boilers and settings therefor
IPC: F22B33/04
Filed: 1945-06-19
Abstract: 594,376. Cornish boilers. LA MONT STEAM GENERATOR, Ltd., and McKAY, W. June 19, 1945, No. 15633. [Class 123 (ii)] In shell type boilers, especially Cornish, Lancashire or multi-tubular boilers, the flue gases irom the furnace tube pass through a brick-lined chamber 1 containing water-tube connection elements 2 which receive water taken at 6 from the front near the bottom of the boiler by suction and circulated by a pump 5 through a header 3 and the sinuous pipes 2 to an outlet header 4 and hence through a pipe 8 to the top of the boiler. The chamber 1 has an expansion joint or means permitting expansion of parts of the plant. The boiler unit is supported at ground level by cradles, and the outer shell of the boiler is lagged. The bottom of the chamber 1 is at ground level and has a door for removal of flue dust. The chamber 1 has bye-pass flues for economisers or other heat-reclaiming devices and for repair of the tubes 2. Specifications 27,269/08, [Class 123], and 483,632 are referred to.
Patent GB-904603-A (GB)
Title: Improvements in brackets
Inventor: CRISP DOUGLAS RAYMOND
IPC: A47B57/30
Filed: 1961-05-01
Abstract: 904,603. Brackets. SAGE & CO. Ltd., FREDERICK. May 1, 1961, No. 15698/61. Addition to 879,378. Classes 52 (1) and 52 (5). In an improvement in or modification of the bracket of the parent Specification, the bracket arm 30 has vertically spaced pins 32, to engage in bayonet slots of an upright support member, and columns of studs 38 with enlarged heads 40 to support a shelf member 41 at different levels horizontally or inclined, the shelf having notches 45, 46 in a flange 44 to engage the shanks 39 of studs 38.
Patent GB-272553-A (GB)
Title: Devices for starting the arc in automatic arc welding machines
IPC: B23K9/12
Filed: 1927-06-13
Abstract: 272,553. Sarazin, R. June 12, 1926, [Convention date]. Heating by electricity.-When starting the arc in an automatic arc welding apparatus, the electrode is subjected to rapid vibrations to prevent it sticking to the work. The electrode 1 passes through the core 2 of an electromagnet 3 arranged in shunt to the arc. An adjustable spring 6 tends to keep the core in one position and a contact 5 causes rapid make and break of the magnet circuit during vibration. The spring may be adjusted so that vibration occurs only when the magnet is energized by the starting voltage. Lateral as well as longitudinal vibrations may be imparted to the electrode and they may both be produced by purely mechanical means comprising a rotating cam operating on the electrode holder.
Patent GB-1457385-A (GB)
Title: Substituted formamidines process for their preparation and their use as uv stabilisers
IPC: C07C239/00
Filed: 1975-04-17
Abstract: 1457385 Substituted formamidines L GIVAUDAN & CIE SA 17 April 1975 [18 April 1974] 15879/75 Heading C2C The invention comprises compounds having the general formula  wherein R 1  is C 1  to C 5  alkyl; R 2  is C 1  to C 9  alkyl or phenyl; A is hydrogen, alkyl, alkoxy, halogen, carboalkoxy or dimethylamino; D is hydrogen, methoxy or chlorine, and E is hydrogen, hydroxy, alkoxy or chlorine. They may be prepared by (a) reacting a carboalkoxyformimidate of the formula with an aniline of formula or (b) reacting an aminobenzoate of the formula with a formamide of formula or (c) reacting a formamidine of formula with an alkylating or phenylating agent R 2 X wherein X is the residue of the alkylating or phenylating agent. The compounds of the invention may be used to protect materials against the degradative effects of ultraviolet light.
Patent GB-496958-A (GB)
Title: Electrically illuminated house sign devices
IPC: G09F13/02
Filed: 1937-06-08
Abstract: 496,958. House signs ; wall lamps. HERTEL, G., and GUDE, E. June 8, 1937, No. 15895. [Class 3 (ii)] [Also in Group XI] A sign plate 1 is formed with a reflecting hood 5 which houses a lamp 4 whereby light is directed downwardly at the front of the plate and also through openings in the rear wall of the reflector to the rear of the plate, so that when the device is mounted adjacent the door of a house, the plate, door, porch and entrance hall or vestibule are simultaneously illuminated.
Patent GB-182104-A (GB)
Title: Improved means for exciting alternating current motors and generators
IPC: H02K17/30
Filed: 1922-06-08
Abstract: 182,104. Sarazin, R. R. R. June 21, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Alternating-current motors; rotary converters; cores.-A machine for use as a phase-advancer or frequency-changer for induction machines or as an exciter for alternators comprises a laminated iron ring 1 having a number of apertures 2, Fig. 1, or 2, 2a, Fig. 3, to accommodate a winding 3 connected to the segments of a commutator 4 which co-operates with a series of brushes 8 connected to the rotor windings of the main machine, the ring 1 being fixed and the brushes rotating with the rotor shaft 6, or vice versa. The winding 3 may be used in connection with the stator winding or with an auxiliary polyphase winding on the stator.
Patent GB-195307-A (GB)
Title: Improvements in or relating to clutches
IPC: F16D13/06
Filed: 1922-06-08
Abstract: 195,307. Rushen, P. C., (Siemens- Schuckertwerke Ges.). June 8, 1922. Clutches, friction, of the kind which are put into operation by braking an auxiliary disc or the like. The movable element of the clutch is operated by a linkage acting in a plane perpendicular to the main clutch axis, one link member moving over its dead centre during such operation. A clutch band 4 engaging loosely at one end with a lug 18 on a plate 3 secured to the driving-shaft 1 is pivoted at the other end to a lever 8 pivoted on the plate 3 and connected by a link 9 to a pin 21 on a brake drum 10, which carries a toothed segment 14 gearing, through a pinion 16 carried by the plate 3, with a gear-wheel 15 carried by a second brake drum 11. When the drum 10 is stopped, the parts 3, 4, 8, 9, &c. move on counterclockwise until they take the position shown in Fig. 2, where the link 9 has passed the normal through the pin 21. At this stage, the lever 8 strikes an abutment 23 on the link 9 to arrest further movement, so that the linkage is selflocking and the brake may be removed. Stops on the parts 3, 10 may replace the abutments on the link and lever. Arrest of the drum 11 acting through the gearing reverses the movement of the link 9 and disengages the clutch.
Patent GB-1339930-A (GB)
Title: Polymeric materials and dispersions containing them
Inventor: THOMPSON D
IPC: C09K23/00
Filed: 1971-05-20
Abstract: 1339930 Modified polymers and dispersions thereof E I DU PONT DE NEMOURS & CO 20 May 1971 [21 May 1970 (3) 12 April 1971 (3)] 16016/71 Heading C3P A polymeric material has the structure wherein B is a polymeric segment of one or more ethylenically unsaturated monomers lacking Zerewitinoff hydrogen atoms; X is the residue of a chain transfer agent; Y is the residue of a di-, tri- or tetra-isocyanate radical; A is an acid radical having a pk a  value of - 1 to 6, or the residue of a basic radical which, as an entity before reaction has a pk a  value of 5 to 14, or the salt of such a basic radical and m and n are 1, 2 or 3 (the total not exceeding 4); provided that when n is 2 or 3 only one of A need be as defined. Examples are given in which 2-mercaptoethanol is used as chain transfer agent in the manufacture of (a) methyl methacrylate/ 2-ethylhexyl acrylate copolymer, polymethyl methacrylate, methyl methacrylate/n-butyl acrylate copolymer or lauryl methacrylate/ acrylonitrile / methyl methacrylate copolymer, the resulting polymer being reacted with a triisocyanate and mercaptosuccinic acid; (b) methyl methacrylate/2-ethylhexyl acrylate copolymer, which is reacted with a triisocyanate and thioglycollic acid or beta-mercaptopropionic acid; (c) methyl methacrylate/2-ethylhexyl acrylate / n - butyl acrylate copolymer, ethyl acrylate / vinyl acetate / n - butyl acrylate copolymer or ethyl acrylate/n-butyl acrylate/octyl methacrylate copolymer, the resulting copolymers being reacted with a triisocyanate and cyanoguanidine; (d) methyl methacrylate/2-ethylhexyl acrylate copolymer which is reacted with a triisocyanate and ammonia, 2,4-dinitroaniline, 2 -methoxy - 5-nitroaniline, diaminomaleonitrile, 3 - amino - 1H - 1,2,4 - triazole, 9 - aminoacridine or N,N-dimethylethylenediamine, the product with the last named base being quaternized with methyl iodide; and (e) ethyl acrylate/ n-butyl acrylate/octyl methacrylate copolymer, which is reacted with a triisocyanate and melamine. The resulting solutions of modified polymers are milled with phthalocyanine blue pigment and mixed with acrylic enamel vehicle or polymethyl methacrylate lacquer, applied to glass or steel and baked.