baber/WOPTO huggingface dataset:
Patent GB-1159962-A (GB)
Title: Improvements in or relating to the Manufacture of Polymeric Material
Inventor: HAGGIS GEOFFREY ARTHUR
IPC: C08G18/50
Filed: 1965-08-11
Abstract: 1,159,962. Aminated polyethers; polyurethanes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 27 July, 1966 [11 Aug., 1965], No. 34366/65. Headings C3C and C3R. [Also in Division C2] Polyethers containing hydroxyl and primary amino groups are obtained by reacting a polyether containing both primary and secondary hydroxyl groups, at least 15% of the hydroxyl groups being primary, with ammonia in the presence of hydrogen and a hydrogenation/dehydrogenation catalyst. Starting materials may be obtained by the polymerization of alkylene oxides containing at least 3 carbons in the presence of active hydrogen containing compounds, e.g. oxypropylated trimethylolpropane and ethylene oxide tipped oxypropylated glycerol, and also by the cationic polymerization of alkylene oxides containing at least 3 carbons using catalysts such as boron trifluoride. Random and block copolyethers containing primary hydroxyl groups and prepared from alkylene oxides containing at least 3 carbons and cyclic ethers such as ethylene oxide, oxacyclobutane and tetrahydrofuran are also suitable starting materials. Catalysts include Raney nickel, Raney cobalt, nickel on Kieselguhr and cobalt on Kieselguhr and are usually used in amounts of from 1 to 20% based on the hydroxyl group-containing polyether. Temperatures of from 150‹ to 300‹ C. and pressures of up to 200 atmospheres are suitably employed. Work-up involves removal of catalyst residues by filtration and also the water formed in the course of the reaction; any solvent used may be removed by heat treatment in vacuo. An antioxidant such as a sterically hindered phenol may be added to the aminated polyether. Aminated polyethers suitable for reacting with organic polyisocyanates to produce cellular or non-cellular polyurethanes preferably have molecular weights of from 200 to 10,000.
Patent GB-361601-A (GB)
Title: Improvements in and relating to casting reels for angling
IPC: A01K89/01
Filed: 1930-11-15
Abstract: 361,601. Fishing-reels. LIGHT CASTING REEL CO., Ltd. and BAKER, M. F., 26, Hinstock Road, Handsworth Wood, Birmingham. Nov. 15, 1930, No. 34437. [Class 48.] In a reel of the type described in Specification 187,124, [Class 48, Fish &c.], a non- rotatable spindle S carrying the winding drum D is given a rising and falling motion over an extended range by an eccentric C secured to a driving wheel G engaging a member C<1> pivoted at C<2> to the spindle. The gear casing is formed in two parts which are held together by screws. The casing and the spindle S with its sleeve S<1>, are cut away to avoid fouling the members C<1>, C. Guards such as R<1> are provided to protect the line from becoming caught in the mechanism.
Patent GB-467500-A (GB)
Title: Improvements in and relating to the manufacture and production of artificial threads, filaments and the like by the viscose process
IPC: D01F2/06
Filed: 1935-12-12
Abstract: Artificial filaments of high tenacity are obtained by coagulating the extruded viscose filaments in a dilute acid bath containing sulphuric acid and also sufficient metallic sulphates to delay the decomposition to cellulose hydrate, and then stretching the filaments by passing them round rollers rotating at progressively increasing speeds, while preventing them from rubbing or slipping on the rollers, after they have left the coagulation bath, in the presence of hot dilute acid at a temperature of at least 60 DEG  C.  The incompletely decomposed filaments may be passed through a bath containing hot dilute sulphuric acid, or they may be subjected to the action of steam or hot gases such as air which heat up the acid from the coagulating bath adhering to the filaments.  After the stretching in presence of acid, the filaments may be washed with hot or cold water and stretching may be continued during the washing.  The process is applicable to the production of continuous filaments or of staple fibre.  The filaments after being stretched may be passed to a cutting machine.  The coagulation bath preferably contains zinc sulphate in addition to sodium sulphate and sulphuric acid.  In an example viscose is extruded into a bath containing 9,5 per cent of sulphuric acid, 4 per cent of zinc sulphate and 20 per cent of sodium sulphate at 50 DEG  C.  The coagulated filaments are led from the bath directly to and around a roller, then through a bath containing 1,5 per cent of sulphuric acid and small quantities of sodium sulphate and zinc sulphate at 95 DEG  C., then round a second roller rotating at a higher speed than the first, and they are collected in a centrifugal box.  Specifications 149,295, 239,254, 274,521, [all in Class 2 (ii)], 289,028, [Class 120 (iii)], 298,548, 309,053, 335,605, [all in Class 2 (ii)], 340,138, 342,027, and 370,943 are referred to.
Patent GB-467201-A (GB)
Title: Improvements in or relating to machines for and methods of forming and/or covering boxes
IPC: B31B15/00
Filed: 1935-12-13
Abstract: 467,201. Making and covering boxes. STOKES & SMITH CO. Dec. 13, 1935, No. 34626. Convention date, Oct. 16. [Class 18] In apparatus for covering formed or stayed boxes or for forming blanks into boxes and covering them, of the type having a number of tool units adjustable to and from a central vertically moving work holder, the cams 1 which operate the two-part former F and the stripping tools SB are so formed that the former has a period of dwell when in its upper position for more than 30‹ rotation of the cam, or the former is moved downwards slowly for a corresponding period to permit of the easy insertion of the work. As shown in Figs. 1, 2, 4 the brushes and rollers 7, 6, the upper margin folders 10 and the side pressers 13 in the tool units ES, ES1, SS, SS1, are operated by rods 17, 19 and a crossmember 20 which is vertically reciprocated by a lever 23 and cam 28 on the same shaft 2 as the cam 1. Each roller 6, &c. is operated from its rod 17 through a lever 31 and link 35. The tools 10, 13 are operated through levers 55 and cam grooves 53, 44 in a block 43 which is moved vertically by racks and a pinion 42, 41, 40 at twice the speed of the rod 17. The units SS, SS1 carry corner folders 8, which are mounted on shafts 65 and operated through resilient connections 73 and levers 67 from shafts 77 which are oscillated bv links 80 and a common lever 81 from a cam 86 adjustable on the shaft 2, to suit different sizes of boxes. The movement of the folders is limited by stops 68. The folders proper may consist of brushes, Fig. 5, they may be spring mounted on pivots 75, and they may carry pins 94, Fig. 10 for operating pivoted side-supporting tools 91. In the machine shown in Fig. 11, the several tools of each unit are operated from a cam 100 inside the unit, the part 28a of the cam for operating the comer folders 8 being adjustable relatively to the remainder of the cam. Specifications 19967/01, 249,967, [both in Class 18], and 458,164 are referred to.
Patent GB-377079-A (GB)
Title: Process for removing oxides and gases from molten aluminium and alloys thereof
IPC: F41A25/18
Filed: 1931-12-14
Abstract: Oxides and gases are removed from aluminium and aluminium alloys by means of a mixture of carbon tetrachloride and an alkali bifluoride, particularly ammonium bifluoride, with or without the addition of silicon chloride.  Carbon tetrachloride may be wholly or partly replaced by antimony pentachloride or manganous chloride or both.  If the aluminium alloys to be treated contain zinc, zinc chloride with or without silicon chloride may be used along with the above reagents.  Liquid chlorides used as reagents may be absorbed in charcoal powder before use.  The purification of an aluminium alloy containing 0,5 per cent of antimony, 1,4 per cent of manganese, and 2 per cent of magnesium is referred to.
Patent GB-434315-A (GB)
Title: Improvements in rolls used for the displacement of articles having a high temperature
IPC: C03B35/18
Filed: 1934-12-03
Abstract: 434,315. Glass manufacture. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.- GOBAIN, CHAUNY, & CIREY, 1<bis>, Place des Saussaies, Paris. Dec. 3, 1934, Nos. 34688 and 34689. Convention dates, Dec. 1, 1933 and Nov. 10, 1934. [Class 56] [See also Group VIII] Relates to the manufacture of rollers which are composed of a number of washers of asbestos or like material threaded on an axle and compressed longitudinally, and are intended for displacing articles at high temperature, particularly glass plates or sheets. According to the invention, means are provided for effecting greater compression of the peripheral portions of the washers than the middle portions. In the construction shown in Fig. 1, the roller is composed of asbestos washers a of standard type threaded on an axle d, but compound washers b, c are interposed at intervals among the washers a. The washers b have the same external diameter as the washers a, but have larger central holes into which the washers c fit. The washers c are made of material which is more compressible than the washers b. Thus when the assembled washers are compressed between clamping nuts e, the washers c yield more than the washers b and the washers a are subjected to greater compression in their peripheral portions. The washers b may be made of metal and the washers c may be made of asbestos. In a modified construction the washers band c are of the same material, but the washers c are thinner than the washers b. In another construction, the washers c are dispensed with. Fig. 3 shows a construction in which the interposed washers h decrease in thickness from the outer edge toward the centre. In a further modification, the roller consists entirely of the standard washers a, but end washers are interposed between the clamping nuts e and the ends of the roller. These end washers diminish in thickness from their outer edges inwards, so that greater pressure is exerted on the peripheral portions of the washers a. In the Specification as open to inspection under Sect. 91, a construction is described in which the roller is made up entirely of washers similar to the washers h, Fig. 3. This subject-matter does not appear in the Specification as accepted.
Patent GB-448258-A (GB)
Title: Improvements in or relating to the grinding, cutting, pulverising or the like treatment of materials
IPC: B02C7/17
Filed: 1934-12-04
Abstract: 448,258. Grinding-mills. CLARK, G., and CLARK, W., 8, Pryme Street, Kingstonupon-Hull. Dec. 4, 1934, No. 34781. [Class 59] In a mill for grinding, cutting, &c. materials a cooling or heating medium is passed both through a hollow rotor to contact with its periphery on which blades are circumferentially spaced to form the inner periphery of an annular treatment chamber for the material, and also through each of a plurality of hollow stationary blades circumferentially spaced apart about the axis of the rotor to constitute the outer periphery of the treatment chamber. As shown, the rotor 12 is provided with blades 11 and the stator with blades 13 to form an annular grinding chamber 10. The rotor is enclosed by discs 15 carrying fan blades 22 which induce air through spaces 20 surrounding the drive shaft 14 and force it past the ends of the rotor to form an air seal for the chamber 10 as described in Specification 441,650. The shaft 14 is bored at 28, 29 and 30, 31 for the entrance and exit respectively of cooling or heating fluid to the rotor 12, holes 19 being made in the web 18 for the passage of fluid from one side of the rotor to the other. The blades 13 are bored transversely and connected to inlet and outlet chambers 33, 34 respectively. The fluid may be passed through the rotor and stator in series, the bore 31 in the shaft 14 communicating by a passage to an annular ring in a double gland 32, Fig. 3, provided with end packing 39 and a pipe 38 leads the fluid to the stator. The fluid inlet connection to the shaft 14, Fig. 2, comprises a ring 24 loose on the shaft and a cap 25 with packing 27, the inlet pipe 26 being screwed into the cap. The air entering the rotor ends at 20 may be heated or cooled and the rotor may have radial webs at one or both ends with or without a centre partition. In treating sugar, the cooling medium may comprise liquid or gaseous carbon dioxide, ammonia, calcium chloride, brine or cold water. Steam or hot air may be used for heating purposes.
Patent GB-964579-A (GB)
Title: Electronic circuits embodying semiconductor devices
IPC: H01L29/00
Filed: 1960-10-11
Abstract: 964,579. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. Oct. 11, 1960 [Dec. 17, 1959], No. 34846/60. Heading H1K. An electronic switching circuit comprises a semi-conductor device having a plurality of bistable elements, each element consisting of a PNP (or NPN) structure formed from a first P-type layer common to all the elements, a second N-type region common to at least two adjacent elements and a third P-type region individual to each element; the two PN junctions are parallel and the N-type layer has a portion of restricted cross-section between the adjacent elements: A first voltage source is connected across adjacent elements to make one of them conductive and a second control voltage source can provide a field through the restricted portion to switch the non-conducting adjacent element to its conductivestate. Fig. 1 shows such a structure comprising two bi-stable PNPN elements 30 and 40 and voltage source 12 is connected across each element via load resistors 33 and 34 so that one only (element 30) is normally conductive. If a voltage impulse is applied from trigger pulse source 14 so as to reverse bias the PN junction 24 injected carriers in the common layer 17 in the region of element 30 will be attracted to the neighbourhood of reverse biased junction 25 and so trigger off the conduction of element 40. When element 40 starts to conduct a negative impulse is applied via capacitor 35 to element 30, thus switching it to the OFF condition. The original state with 30 ON and 40 OFF may be restored by opening and restoring switch 42 in series with voltage source 12. In place of the upper P- type portions 15 and 20 in elements 30 and 40, a metallic injecting contact, as described in Specification 887,208, may be provided. A trigger pulse source may also be associated with the element 30 side of the device to provide means for switching when element 40 is ON and element 30 is OFF. A plurality of pairs of elements may be provided on a common base layer (Fig. 5, not shown) to provide a counter to the base 10, or if desired, to the base 4; in these cases an initial "pilot " element is provided which is maintained conducting throughout. The device may be constructed by exposing a P-type silicon wafer to phosphorus vapour to form an N-type layer and then alloying gold-indium to form desired P-type regions. Masking may be provided by using albumin as in ink, coating with wax which does not adhere to the albumin portions and then etching those portions not protected by wax. Alternatively, depletion layer etching may be employed. Electrodes may be provided by alloying, plating or other process and may consist of ganged cat-whiskers in a rubber mass or a conducting rubber lattice. The semi-conductor may consist of silicon, germanium or an A3B5 compound.
Patent GB-633485-A (GB)
Title: A new dyestuff of the anthraquinone series
IPC: C09B9/02
Filed: 1946-11-25
Abstract: 1 : 11 : 5 : 111 - Trianthrimide - 2 : 21 : 6 : 211-carbazole is converted to its leuco-sulphuric ester by treating it in presence of a metal, or treating a metal salt of its leuco derivative, with a sulphating agent such as sulphur trioxide in presence of an amide derived from a secondary amine. Amides specified are dimethylformamide, diethylformamide, dimethylacetamide, tetramethylurea, N : N-diethyl - p - toluenesulphonamide.  Diluents specified are acetone and acetonitrile.  In examples, the carbazole is (1) reacted with zinc dust in dimethylformamide in presence of potassium ethyl sulphate or sodium b -naphthol sulphonate, and then with methyl chlorsulphonate in more dimethylformamide, or (2) with zinc dust in diethylformamide in presence of acetonitrile and methyltriethylammonium chloride, followed by reaction with sulphur trioxide in diethylformamide.  Specifications 274,156, [Class 2 (iii)], 610,117, 633,481 and 633,513 are referred to.
Patent GB-389587-A (GB)
Title: Improvements in signs
IPC: G09F7/16
Filed: 1931-12-17
Abstract: 389,587. Signs. BOZIER, R. G., 91, Alma Road, Winton, HOLLAND, W. F., Daybrook, Kinson, and WINTER, W., 74, Gladstone Road, Boscombe, all in Bournemouth. Dec. 17, 1931, No. 34922. [Class 3 (ii).] A weatherproof sign is made by coating a sheet of preferably coloured glass 10 with a layer of paint 11, covering this again with a layer of lead or other metal foil 12 which is attached preferably by adhesive after the paint has dried, and finally removing parts of the foil and paint together as at 13 to form the sign, either as transparent lettering on an opaque ground or vice versa. The foil is removed by cutting, after which the paint is removed by a suitable solvent. The finished sheet may be backed by a reflective or other backing and framed.
Patent GB-1123290-A (GB)
Title: Vehicle interior rear view mirror assemblies
Inventor: JONES DAVID FRANCIS
IPC: B60R1/04
Filed: 1967-07-29
Abstract: 1,123,290. Vehicle interior rear-view mirrors. FORD MOTOR CO. Ltd. 29 July, 1967, No. 34962/67. Heading B7J. A vehicle interior rear-view mirror assembly comprises a mirror head 5 on one end of a stem 6, the other end of the stem being detachably connected in an aperture 10 of roof header panel 2 and the stem carrying a frusto-conical resilient hollow rubber member 12 which abuts windscreen 3 to steady the assembly, the connection being adapted to break away in the event of an impact on the mirror head. The connection comprises a detent 7 slidable in a bore 9 of the stem and spring loaded so that an end 7a thereof contacts an edge of the aperture. The member 12 is mounted on a threaded stud.
Patent GB-1391294-A (GB)
Title: Friction clutches
IPC: F16D43/21
Filed: 1972-07-27
Abstract: 1391294 Clutches R HALLER 27 July 1972 [6 Aug 1971] 35222/72 Heading F2C A friction clutch, disengaged by relative axial movement of driving and driven members caused by a torque overload, comprises a driving boss 3 in a driven cup member 8, the driving boss having a trough 6 in which a ball 7 is sited, there being an expanding split ring 9 between the driving and driven members having a slot 99 of radially tapered shape so that as the driving member 3 rotates the ball 7 is forced into the slot 99 to cause expansion of ring 9 and transmission of drive. The embodiment shown, has a non-rotatable nut 12 on a shaft 2 driven by the clutch so that overload causes axial movement of member 8 against a force exerted by a lever 16 and, through friction, of the ring 9 which causes the ball 7 to be moved along the oblique slot 99 and the ring to move until one of two stops 28, 29 abuts an end 18 of slot 6 (Fig. 4, not shown), which causes the ball to be centred in slot 6 on further axial movement and so disengages the clutch. In another embodiment (Figs. 5 and 6, not shown), the boss 3 is screwed on to the driving shaft 1 to which it is attached by a helical spring (or two if both directions of rotation are accommodated), so that the boss 3 is moved axially by a predetermined torque to disengage the clutch. It is also possible to change around the positions of ball and ring so that compression causes the ring to engage with the inner member. An electric switch may be provided, actuated by a lever 16 connected to the axially movable member for interrupting the drive to the driving shaft 1.
Patent GB-1516711-A (GB)
Title: Integrated circuit memory cells and memories utilising such cells
IPC: H01L29/73
Filed: 1975-08-27
Abstract: 1516711 Bistable memory cell WESTERN ELECTRIC CO Inc 27 Aug 1975 [3 Sept 1974] 35291/75 Heading H3T An integrated circuit memory cell substantially as shown has directly cross coupled bipolar transistors T1 T2 forming a flip flop memory and bipolar transistors T3 T4 forming current sources for T1 T2, first and second bit lines 102, 103 coupled to the collectors of the flip flop Tl T2, possibly coupled by Schottky diodes SD1, SD2 formed at the collectors, a word line 101 connected to the emitters of T1 T2 and to the bases of T3 T4, the emitters of the current source transistors T3 T4 connected to a potential. The transistors forming the flip flop T 1 T2 may be Schottky diode clamped. Transistors T3 T4 conduct at all times, but the current is at a low level except during reading or writing when the word line 101 is pulsed to increase the current, and also to change the voltages at the collectors of 109,110. To read, external circuit, (not shown) observes the differential potential between bit lines 102, 103 to determine the state of the cell. One of the transistors T1 T2 will be on and its collector will be near the potential of line 101. To write, coincident with the pulse on the word line 101 one of the two bit lines is pulsed to force the cell to the desired state.
Patent GB-634850-A (GB)
Title: Improvements in or relating to the injection moulding of plastic materials
IPC: B29C45/70
Filed: 1946-11-30
Abstract: 634,850. Injection-moulding machines. VLTAVSKY, V. Nov. 30, 1946, No. 35532. Convention date, June 22, 1944. [Class 87 (ii)] One part 5 of the mould is secured to a hydraulic piston 4 working in a cylinder 3 fixed to a frame 1, and the other part 6 is carried by a floating crossbeam 7. The cross-beam 7 is fixed to bars 8 connected by a stirrup 24 to the piston 9 of a fixed hydraulic cylinder 10. The injection cylinder and nozzle 11 are carried by another floating cross-beam 12. The injection ram 2 is attached to the frame 1. The machine is operated by a pump 15 which draws liquid from a tank 16. In operation, valve 22 is closed and valve 20 opened, whereupon the pump 15 forces liquid through pipe 21 into cylinder 3, thus raising piston 4 and mould part 5 from their lowermost position to the closed-mould position shown. During this movement waste liquid from the annular space above the head of piston 4 passes via pipes 18, 17, 21 into cylinder 3. The piston 4 continues its ascent from the position shown, the whole mould rising and pushing the cylinder and nozzle 11 against the ram 2, whereby material is ejected from the cylinder into the mould. During this continued ascent piston 9 is pulled upwards, and liquid passes from cylinder 10 via pipes 19, 17, 21 into cylinder 3, thereby accelerating the ascent of ram and mould (the amount of liquid delivered by the pump remaining unchanged). To withdraw the mould, valve 22 is opened and valve 20 closed, whereupon the pump depresses pistons 4, 9, waste liquid passing to the tank. The injection cylinder 11 is pulled off the ram by bars secured to crossbeam 7, the cross-beam 12 coming to rest on stops 25 on the frame 1. The Specification as open to inspection under Sect. 91 stated that there might be more than one piston and cylinder 9, 10. This subject-matter does not appear in the Specification as accepted.
Patent GB-315182-A (GB)
Title: Improvements in and connected with affixing screws, bolts and the like
IPC: F16B23/00
Filed: 1928-12-04
Abstract: 315,182. Godenir, A. Dec. 4, 1928. Wood-screws.-A device for securing articles such as electric switch plates or the like to an irregular wall consists of a, main screw bearing a suppiementary screw on its outer end. The main screw 1, the head 2 of which forms the seating for the article to be secured, may be either a bolt or a wood screw, and has a smaller screw 4, turned by a similar tool to that for the main screw, tapped into its head. In a modification the screw 1a has the supplementary screw 4b formed integral with it, this bearing a nut 5b of similar shape to the head of the main screw.