baber/WOPTO huggingface dataset:
Patent GB-269915-A (GB)
Title: Improvements in and relating to auto-transformers having variable transformation ratios
IPC: H01F29/12
Filed: 1927-04-22
Abstract: 269,915. Stragiotti, P. April 22, 1926, [Convention date]. Regulating transformers. -A variable ratio auto transformer comprises a pair of fixed windings I, IV wound in the same direction on a stator 1 and a pair of movable windings II, III wound in opposite directions on a rotor 2, all the windings being connected in series. Connections are effected through slip rings or flexible leads, and the ends together with a tapping between the windings II, IIII form the terminals X, Y, Z to which the load and supply circuits V, V<1> are connected. The ratic V<1>/V is varied from one to zero by rotation of the rotor which may be effected either directly or through worm gearing. The auto transformer may be employed for effecting continuous regulation of the voltage between lines 8, 8<1> supplied from the tapped secondary winding 9, Fig. 5, of a main transformer, the terminals X, Z being connected to adjacent tappings on the main transformer so that angular variation of the position of rotor varies the distribution of current between the two tappings in accordance with the relative impedance of the paths i<1>, i<11>. The connections to the tappings may be changed under load by changing each tapping connection while current is diverted through the other by appropriate adjustment of the rotor.
Patent GB-1003363-A (GB)
Title: Coating compositions
IPC: C08L91/06
Filed: 1962-03-21
Abstract: A coating composition comprises an aqueous dispersion having a pH of at least 7 and containing (a) a wax, (b) a dispersing agent, and (c) a water-insoluble polymer of 10-55% of acrylonitrile and/or methacrylonitrile and 30-90% of at least one C1-C18 alkyl acrylate or methacrylate, the components of the polymer being such that a 0.5-2.5 mil. thickness film of the polymer on a glass panel has a Knoop hardness number of about 2 to 20, the weight ratio of polymer to wax being from 95 : 5 to 10 : 90, the amount of dispersing agent present being from 0.1 to 10% of the total weight of polymer and wax, and the amount of resin present in the composition being not more than 50% of the weight of the polymer present.  In addition to the nitrile and ester units the polymer may also contain minor amounts of units derived from other monomers, e.g. vinyl acetate, vinylidene chloride, styrene, vinyl toluene, unsaturated acids, and unsaturated ethers, esters and amides containing aminoalkyl groups.  Waxes specified are of natural and synthetic types, e.g. low molecular weight polyethylene.  Also present in the compositions may be plasticizers, e.g. tributoxyethyl phosphate. The examples describe the preparation of compositions in which the copolymers are derived from acrylonitrile, ethyl acrylate and/or methyl methacrylate, and, as optional third and fourth monomers, styrene, vinyl toluene, butyl acrylate, dimethylaminoethyl, methacrylate, n-hexyl acrylate, vinylidene chloride, vinyl acetate and methacrylic acid.ALSO:Floor surfaces are polished by applying thereto a coating composition comprising an aqueous dispersion having a pH of at least 7 and containing (a) a wax, (b) a dispersing agent, and (c) a water-insoluble polymer of 10-55% of acrylonitrile and/or methacrylonitrile, 30-90% of at least one C1-C18 alkyl acrylate or methacrylate and, optionally, minor amounts of other monomers (see Division C3).  The examples describe the application to surfaces of linoleum, asphalt, vinyl asbestos and vinyl tile of dispersions containing low molecular weight polyethylene wax, a resin-maleic adduct partially esterified with a polyhydric alcohol and copolymers derived from acrylonitrile, ethyl acrylate and/or methyl methacrylate, and, as optional third and fourth monomers, styrene, vinyl toluene, butyl acrylate, dimethylaminoethyl methacrylate, n-hexyl acrylate, vinylidene chloride, vinyl acetate and methacrylic acid.
Patent GB-260868-A (GB)
Title: Improvements relating to belt fasteners
IPC: F16G3/06
Filed: 1926-04-26
Abstract: 260,868. Alexander, F. W., and Lewis & Tylor, Ltd. April 26, 1926. Belt fastenings. - Shock and noise due to the passage of the jointed ends of a belt over a pulley are obviated by the insertion between the turned-up belt ends of a strip of resilient material forming a loop containing air at the part which comes into contact with the pulley surface. The loop shaped member 5 may be formed of a strip of rubber &c. doubled and bent or moulded in one piece to form a. hollow portion 6. The turned-up belt ends 1, 2 with the strip 5 interposed are secured by metal plates 3. 4 bolted together by screws, 8 with nuts 12 and split washers 10.
Patent GB-878897-A (GB)
Title: Hollow, air-cooled blades for gas turbine engines
IPC: F01D5/18
Filed: 1959-04-01
Abstract: 878,897. Making turbine and compressor blades. CREEK, J. O. April 1, 1959, No. 11064/59. Class 83 (2). [Also in Group XXVI] A gas turbine or compressor blade is made from sheet metal and on the inner surface of the blade skin are provided spaced parallel ribs, formed integral with the skin, extending lengthwise of the blade, defining a series of grooves, with separate cover means for each groove supported by the ribs so as to form passages for a cooling fluid. The integral ribs 14 are formed, together with tip extensions 16, by rolling, forging, stamping, machining, grinding, or by wrapping a sheet of metal about a mandrel and turning a helical groove in the surface. The tip extensions 16 are bent over to rest on adjacent rib tips and brazed into positions so as to form passages 15. Before shaping the blades, some passages are removed from the sheet by machining or grinding so that those remaining are located over an area intermediate a leading 12 and a trailing edge 13 of each blade. The sheet is bent to aerofoil section with the passages disposed internally. In another embodiment, ribs 123, without tip extensions are provided and passages 115 are formed by brazing, channel-section members 116 between adjacent pairs of ribs. The members 116 may be from rolled, drawn or extruded thin sheet stock.
Patent GB-1527696-A (GB)
Title: Positive hold differential
IPC: F16H48/12
Filed: 1977-03-16
Abstract: 1527696 Differential gear; Ratchet clutches M G TOMICH 16 March 1977 [19 March 1976] 11080/77 Headings F2D and F2C A differential comprises a spider member 40 having clutch teeth 42 on each side of it, each set of teeth driving a respective axle shaft 26, 28 through a clutch member 52, 54 having teeth 56 which mate with the teeth 46, the spider member 40 also having within it a cam ring 46 which is mounted for limited rotation relative to the spider 40 and has cam ramps 48 on each side of it which engage between cam ramps 58 on the clutch members 52, 54, certain of the cam ramps 50 on the ring 46 (or alternatively certain of the teeth 42 or 56, Figs. 6 to 9, not shown) being enlarged so that re-engagement of a disengaged clutch can only occur after a certain relative rotation between the clutch member and the spider 40. The clutches are held engaged by springs and both are fully engaged when the driven wheels rotate at the same speed. When, for example, a bend is negotiated the slower wheel remains driven through a clutch member 52 or 54 but the faster moving wheel causes relative rotation between its associated clutch member and the spider 40, permitted by the clutch teeth 52, 56 being narrower than the gaps between them. The cam ring 46 is, however, held in position by the other clutch member and consequently the cam ramps cause the clutch associated with the wheel which tends to move faster to disengage to permit the differential action. The enlarged cam ramps 50 (with corresponding gaps 62 in the clutch member) reduce noise by reducing the number of attempted reengagements. The spider 40 is mounted in a casing which is rotated by bevel gearing 16.
Patent GB-871429-A (GB)
Title: Improvements in or relating to yarn packages
Inventor: GRACIE PETER STANLEY
IPC: D01H1/36
Filed: 1957-04-05
Abstract: 871,429. Winding yarns. BRITISH NYLON SPINNERS Ltd. March 31, 1958 [April 5, 1957], No. 11106/57. Class 120(2) In a method of winding double taper yarn packages in machines having constant stroke traverse and constant stroke shift mechanisms, the traverse guide which may or may not run at constant velocity is provided with a shift motion which moves under acceleration for a period commencing during the second half of each stroke and finishing just prior to the end of said stroke and/or under deceleration for a period commencing just after the start of each stroke and finishing during the first half said stroke. The traverse guide may be decelerated whilst approaching the end of each stroke and accelerated at the start of each stroke or the shift motion may be actuated by a disc cam whereby the shift is accelerated in the second half of each stroke and decelerated in the first half of each stroke. Specification 704,173 is referred to.
Patent GB-137725-A (GB)
Title: Improvements in burners
IPC: F23D11/10
Filed: 1919-05-05
Abstract: 137,725. Balfour, J. W. B. May 5, 1919. Pulverulent fuel burners; spray burners; liquid fuel supply. - Pulverulent and liquid fuel burners for use in furnaces and boilers consist of two concentric cylinders 1, 2 with tunnel-shaped caps 4, 6, the outer of which terminates in the burner nozzle 14, and with means for heating the fuel and mixing it with air and subsequently with steam. Pulverulent fuel is supplied to the inner cylinder by the pipe 9, and liquid fuel by the coiled pipe 8. Preheated air is supplied at 10 and mixed with the fuel by means of the perforated baffle-plates 12. Steam is supplied by the pipe 11 to the annular space between the two cylinders and delivered' through perforations in the plate 5 to the space between the two caps or nozzles 4, 6 to mix with the fuel and air issuing through the inner nozzle, the final mixture being discharged through the nozzle 14, where it is ignited. Specification 118,386 is referred to.
Patent GB-678326-A (GB)
Title: Improvements relating to knot-tying devices
Inventor: SHORTLAND ARTHUR
IPC: D03J3/00
Filed: 1950-05-05
Abstract: 678,326. Knot-tying devices. MELLOR, BROMLEY & CO., Ltd. March 19, 1951 [May 5, 1950], No. 11194/50. Class 112. [Also in Group XVII] A. knot-tying tool has a strap handle comprising a strip body portion 1 having secured to it two pocket forming layers, an outer layer 2 formed by folding over on the strip 1 a piece integral with it and an intermediate layer 3 between these layers 1, 2, the stem 7 carrying the knotter head and mechanism 8 being received in the pockets thus formed. The upper end of the outer layer forms a strap 9 of reduced width which passes through a channel 10 beneath the knotter head and then through transverse slits 12 in the strip 1, its free end cooperating with a buckle 16. The handle is lined with felt 15.
Patent GB-495823-A (GB)
Title: Improvements in machines for grinding, glazing or polishing knife and like blades
IPC: B24B19/00
Filed: 1937-04-20
Abstract: 495,823. Grinding knives. HAGUE, A. V. April 20, 1937, No. 11197. [Class 60] A machine for grinding, glazing, or polishing knife blades comprises a stand 4 on which is mounted a grinding-wheel 1 and a sleeve 6 carrying a cylindrical radial arm 7 on which a carriage 8 reciprocates. When the lever 13 is moved to the right, Fig. 1, its end 17 moves the carriage 8 inwardly over the arm 7 until the stop 18a is reached, further movement of the lever causes the spring 11 to be compressed and the wedge-shaped member 19 to be moved relative to the carriage. This causes the lever 21 to be rotated about the pivot 21a and the pin 34 resting on it to lift the end of the pivoted blade supporting device 23 until the blade 32a contacts the grinding-wheel. If the motion of the lever 13 is now reversed, the end 17 acting against the abutment 18 will move the carriage outwardly and the spring-loaded member 9 will return to its original position. The outward movement of the carriage is continued until the lever 20 strikes the abutment 37, rotates and then strikes the end of the wedge 19 which is thereby returned to its original position, allowing the blade to fall away from the wheel 1. The adjustable abutment 37 limits the length of travel of the carriage 8 as the carriage is automatically stopped when the lever 20 is locked between it and the wedge 19. A strip 39 angularly adjustable in its own plane and attached to the carriage 8 is supported by screws 38a and 40a to impart a slight rotary motion to the blade-supporting device 23 so that the blade is thicker at one end than at the other. The carriage 8 can be set in any angular position relative to the arm 7 by suitable adjustment of the screws 38a, 40a. The position of the sleeve 6 is adjusted by means of screws 43. The blade-supporting device 23 can be brought nearer to the wheel 1 by rotation of the hand wheel 33 which causes the sleeve 27 to be raised and the wheel 31 to rotate on the fixed pin 34 and lift the other end of the device 23. If the lock-nut 32 is loosened so that the wheel 30 is free to rotate on the spindle 28, it is then possible to move the pivoted end only of the blade-supporting device relative to the carriage. Specification 391,447 is referred to.
Patent GB-513509-A (GB)
Title: Improvements in or relating to beams for building and constructional purposes
IPC: E04C3/28
Filed: 1938-04-12
Abstract: 513,509. Beams. KILBURN, B. E. D., (Smidth & Co. Aktieselskab, F. L.). April 12, 1938, No. 11267. [Class 20 (iv)] A beam for building and like purposes comprising a compression flange 1 and a tension flange or bulb spaced apart by a plane web 3 is formed by folding one or more sheets of asbestos-cement in a moist or plastic condition into two or more superimposed layers to form the section required, with' or without a metal reinforcement. The reinforcement may be provided between superimposed asbestos-cement layers in the form of wire-netting, or rods connected by cross-ties. The reinforcement may be previously coated with cement paste to increase the adhesion between the reinforcement and asbestos-cement. The T-shaped beam shown is folded from a single sheet of asbestos-cement, a reinforcing bar 2 being incorporated in the bottom bulbous portion of the web, and a sheet 4 of wire-netting being enclosed between the two layers of material constituting the web 3. A single sheet of asbestos-cement may also be folded to form a beam of Z, channel, or other section, and, if desired, another asbestos-cement sheet may be folded around the outside of a section formed as described, with or without an interposed layer of metal reinforcement.
Patent GB-572236-A (GB)
Title: Improvements in tobacco and methods of treating the same
IPC: A24B15/24
Filed: 1943-07-12
Abstract: A method of incorporating blending or flavouring tobacco with a main body of tobacco comprises forming a solution, slurry or colloidal dispersion of finely divided particles of the blending or flavouring tobacco in water and applying the solution &c. in a uniform manner to the tobacco of the main body to form a coating thereon.  The main body or the blending tobacco may comprise a mixture of different kinds of tobacco, and the main body include a proportion of blending tobacco.  Up to 20 per cent. of the finished product may be blending tobacco but preferably the proportion is between 1 1/2 and 10 per cent.  Essential oils may be added as flavouring agents.  Slurries may be made of different blending tobaccos and be applied separately or simultaneously to the main tobacco.  The blending tobacco is subjected to a dry grinding operation and then mixed with water or it may be ground wet with the required water content, the product being subjected to heat or pressure to accelerate hydration of the blending tobacco before being applied to the main tobacco by dipping or spraying.  Subsequently the coating is dried to form a gel-like covering.  The Specification as open to inspection under Section 91 refers to the use of other flavouring materials than tobacco or essential oils.
Patent GB-1083333-A (GB)
Title: Improvements in or relating to automatic gauge control systems
Inventor: BARRINGER BRIAN WILFRED
IPC: B21B37/18
Filed: 1963-03-21
Abstract: 1,083,333. Automatic thickness control. RANK ORGANISATION Ltd. March 18, 1964 [March 21, 1963], No. 11315/63. Heading G3R. An automatic thickness control system for a rolling mill comprises means 18 for measuring the thickness of a strip 11 to produce a signal when the strip thickness deviates from a desired value, which signal is amplified in an amplifier 22 and fed to a trigger mechanism 23 to control either of relays 26 or 27 so as to energize the screw down motor 16 to adjust the work rolls 13 to correct the thickness deviation of the strip. The screw down motor 16 also drives a tachogenerator 28 the output of which is integrated by an integrator 29 and then fed to the trigger mechanism 23 in opposition to the signal from the amplifier 22 so that when the two input signals to mechanism 23 are equal the screw down motor 16 is switched off. The integrator 29 is controlled by the signal from the measuring means 18 so that the integrated signal to the trigger mechanism 23 is maintained after the screw down motor 16 has been de-energized and the output from the tacho-generator 18 disappeared until the corrected strip thickness reaches the measuring means 18 whereupon the output from the integrator 29 is cancelled. In a further embodiment means are provided to prevent energization of the screw down motor in the opposite direction to an already applied correction should the output from the trigger mechanism 23 become reversed as may happen when large deviations are sensed by the means 18. In the case of short transportation lags a switch may be inserted between the tacho-generator and the integrator whereby the integration process may be prematurely ended and the switch may be under the control of a transducer responsive to the speed of the strip. Furthermore a signal giving the transportation lag may be derived by means of a slipping clutch mechanism. Alternatively the system may be controlled by measuring the strip tension and controlling the drive to the take up roll.
Patent GB-436549-A (GB)
Title: Improvements in or relating to ambulance stretchers
IPC: A61G1/04
Filed: 1934-04-14
Abstract: 436,549. Ambulance stretchers. TROJAN, Ltd., and MONK, B., Vicarage Road, Croydon. April 14, 1934, No. 11323. [Class 108 (i)] An ambulance stretcher of conventional design is provided with an auxiliary device comprising straps or flexible cover or both located on one pole and adapted to bridge over the patient whereby the stretcher may be tilted and the patient at the same time adequately supported. As shown L-shaped brackets 16-18 are provided adapted to clip on one of the poles 10 and straps 21-33 are secured to the underside of said brackets, buckles 25-27 being attached to the straps by rings to permit angular adjustment. The brackets are connected by a rod 15 to which also a flexible cover 29 is secured. The cover is adapted to bridge the patient, being provided at its other margin with a stiffener 35 and three sets of loops for the straps which pass under the stretcher and over the top of the cover to the buckles. The strap 23 is provided with a loop 28 adapted to embrace the feet as shown. A fixed or detachable head rest 45 and a head band 50 are provided. The canvas of the stretcher is denoted at 14. The auxiliary device when not in use may be detached and rolled up.
Patent GB-1203930-A (GB)
Title: Glass ceramic articles
IPC: C03C10/00
Filed: 1967-09-04
Abstract: 1,203,930. Glass-ceramics. CORNING GLASS WORKS. 4 Sept., 1967 [14 Sept., 1966], No. 11338/70. Divided out of 1,203,469. Heading C1M. A glass-ceramic body contains an analogue of beta-cristobalite as the principal crystal form, the crystals being formed in situ from a glass body consisting essentially, in weight percentages, of: SiO 2  55-90; Al 2 O 3  5-40, the sum of SiO 2  and Al 2 O 3  constituting at least 90%, and 1-5 total of at least one oxide selected from CaO, CuO and SrO. Up to 3% of Li 2 O may be included. Up to 9% total, preferably not more than 5%, of one or more of the following oxides may be included: ZnO, PbO, BeO, MnO, CdO, P 2 O 5 , MgO, B 2 O 3  and fluorine if used should be in amounts less than 3%. Formation of the crystals may be in two-step nucleation and crystallization temperatures with suitable dwell times, examples being given, but the crystals may be developed by a gradual, constant increase in temperature from room temperature or from just below the transformation point, the rate of increase not exceeding 5‹ C./minute.
Patent GB-418219-A (GB)
Title: Improvements in master cylinders for hydraulic power transmission systems
IPC: B60T11/224
Filed: 1933-04-18
Abstract: 418,219. Hydraulic transmission of power. HYDRAULIC BRAKE CO., 84, West Hancock Avenue, Detroit, Michigan, U.S.A. April 18, 1933, No. 11395. Convention date, April 22, 1932. [Class 69 (ii).] In a master cylinder device for hydraulic brakes and other hydraulic transmission systems comprising high- and low-pressure cylinders, the lowpressure piston is rendered ineffective by a valve when a predetermined pressure is established in the system and the high-pressure cylinder then discharges into the system through the lowpressure cylinder. The high-pressure piston 17, Fig. 1, is connected to the low-pressure piston 19 within which slides a piston 29 carrying a valve 31 normally seated over a hole in the cup-washer 33 by a spring 28. The reservoir 9 normally communicates through port 21 with high-pressure cylinder 6 thence through passages 22, 23, 24, 26 with the cylinder 7 below the piston 19. The interior of the piston 19 communicates with the reservoir through passages 42, 43, 44. A valve 40, such as described in Specification 384,724, is provided for normally retaining in the pipe lines 41 a pressure somewhat above atmospheric. When the pistons are moved downwardly by rod 18, the piston 19 forces liquid into the pipe lines 41, liquid being at the same time drawn into the increasing space between the pistons 19, 17 from the reservoir through grooves 44 and past the cup-washer 20. When the pressure below the piston 19 and valve 31 is sufficient to overcome the spring 28, the valve rises and by uncovering the hole in the washer 33 renders the piston 19 ineffective and permits the piston 17 to force liquid into the pipe lines through the cylinder 7. In a modification, Fig. 2, the valve 71 is slidable against the spring 72 in a cylinder 68 which is normally supported by the spring 69. The piston 53 is normally supported from piston 54 by spring 55. The passage 64 through piston 54 is thus normally open as is also a passage 61, 57 from the reservoir to the space between the pistons. During the initial stage of operation these passages are closed by the cylinder 68 abutting on the two pistons, but when the pressure below piston 54 acting on the valve 71 is sufficient to overcome the spring 72, the valve rises, reopening the passage 64 thus rendering the piston 54 inoperative.
Patent GB-114800-A (GB)
IPC: A61K9/06
Abstract: 114,800. Noble, R. Dec. 31, 1917. Ointments.-An ointment for the treatment of eczema &c. consists of red precipitate powder, oil of thyme, and a suitable base such as lard.