baber/WOPTO huggingface dataset:
Patent GB-581490-A (GB)
Title: Improvements in or relating to ignition timing
IPC: F02P5/10
Filed: 1944-03-30
Abstract: 581,490. Fluid pressure servomotorcontrol of ignition' timing apparatus. UNITED AIRCRAFT CORPORATION. March 30, 1944, No. 5941. Convention date, March 18, 1943. Addition to 572,350, [Group XXVII]. [Class 135] The ignition timing control of the parent Specification includes a further device, such as a valve, for varying the effect' of the pressure difference across the supercharger on the pressure-responsive means which adjusts the ignition timing. The outlet pressure of an engine-driven supercharger 10 is led through a conduit 36, chamber 38, restriction 42, and conduit 44 to one side of a diaphragm 32, and the other side of the diaphragm is subject to the supercharger inlet pressure through a conduit 48. The diaphragm is connected to a piston valve 51 controlling the operation of a piston-type servomotor 69. which adjusts the position of the timing control arms 79. The diaphragm is loaded by a spring 50 towards the spark retard position. A further spring-loaded diaphragm 70 also subject to the supercharger inlet and outlet pressures is connected to a valve 82 which opens when the pressure difference exceeds a certain value and connects the high pressure side of diaphragm 32 to the inlet of the supercharger. Thus, in operation, as the engine speeds up from starting and idling to cruising the spark will be advanced ; but when the engine is running over the high power range, and the pressure difference across the supercharger reaches the highest level, the bleed valve 82 will open and the consequent loss of pressure in chamber 34 will allow the spring 50 to move the diaphragm 32 to actuate the servomotor and so retard the spark again. A throttle 23 is provided in the intake to the supercharger.
Patent GB-1262347-A (GB)
Title: Non-woven fabrics
IPC: D04H3/009
Filed: 1969-02-04
Abstract: 1,262,347. Non-woven fabric. CARL FREUDENBERG. 4 Feb., 1969 [10 Feb., 1968], No. 5985/69. Heading D1R. A continuous filament web is bonded by a binder that is present at a higher concentration at the surface regions of the web than at the centre of the web and that is intimate contact with the filaments, none of the binder being separated from the filaments by any adhesion-imparing foreign material. The amount of binder in the central region is sufficient to prevent delamination. The web is made by coating a coagulatable binder having a solids content of up to 20% wt onto a web of clean filaments under conditions such that the binder soaks into but not through to the opposite surface of the web and drying the coated web under conditions such that the binder coagulates and migrates back to the surface. The opposite surface is coated with a coagulatable binder having a solids content of up to 20% wt under conditions such that the binder soaks into the web and drying the web so that the binder coagulates and migrates back to the surface. Preferably up to 5% of the filaments have a titre of up to 0.4 den., up to 40% of the filaments have a titre of 1.2 to 3 den. and at least 60% of the filaments have a titre of 0.4 to 1.2 den. The filaments may be nylon 6 but can also be hetro filaments. The web can be formed by air-laying extruded filaments. The binder, can be applied as a foam and forced into the web under pressure. The binder may be a polymer of butylacrylate, N-methylolacrylamide and acrylonitrile mixed with polyvinylalcohol ammonium oxalate, wetting agent and water.
Patent GB-549698-A (GB)
Title: Improvements in or relating to light polarizers
IPC: G02B5/30
Filed: 1940-04-03
Abstract: 549,698. Dyed oriented polyvinyl alcohol sheets ; dyeing. INTERNATIONAL POLAROID CORPORATION. April 3, 1940, No. 6034. Convention date, May 4, 1939. Drawings to Specification. [Classes 2 (iii) and 15 (ii)] [Also in Groups XX and VIII] A light polarizer comprises a sheet or film of polyvinyl alcohol having molecules stained with a dichroic dye or stain and oriented to such a degree of parallelism that the sheet shows substantial dichroism. The polarizer may be made by forming a cast sheet of polyvinyl alcohol from a water solution, drying it, and stretching it at about 130‹C. to two to eight times the original length, if desired in a moist atmosphere. The sheet may then be cooled, dried, and stained with a solution resulting in the formation of a stain comprising a dichroic polyiodide, such as a solution containing iodine, ammonium or sodium iodide, methanol and water. It is then dried by heating or by immersion in an organic solvent such as acetone or isopropyl alcohol, after which it may be heated to decrease its permeability to water. Suitable plasticizers such as glycerine, ethylene glycol, or formamide may be added to the polyvinyl alcohol. Other dyes or stains than polyiodides may be used, such as those referred to in Specification 549,668, and in many cases the dyeing or staining may take place before the sheet is heated and stretched; or by incorporation of the dye or stain in the solution of polyvinyl alcohol. The orientation of the molecules may be effected by drawing a cold relatively thick sheet across a heated element in one direction, the sheet being softened so that it draws out progressively thinner. In another method, a viscous solution of polyvinyl alcohol is smeared on to a supporting surface by a scraper, which is preferably repeatedly passed over the film until it has dried sufficiently to maintain the molecular orientation.
Patent GB-715648-A (GB)
Title: Improvements in manometers for accurate measurement of fluid pressures or fluid pressure differences
Inventor: GRANT CHARLES ROBERT ARCHIBALD
IPC: G01L7/18
Filed: 1952-03-07
Abstract: 715,648. Pressure gauges. PRESSURE GAUGES, Ltd. March 6, 1953 [March 7, 1952], No. 6041/52. Class 106 (2) A manometer comprises a pair of interconnected containers or tubes containing a liquid, each of a constant cross sectional area over its length, whilst the cross sectional area is not necessarily the same for each, one container being arranged so that its effective horizontal cross sectional area is variable, the arrangement being such that the pressure difference is observed as the alteration in liquid height in one of the containers from the liquid position occupied at zero pressure difference, the difference between this observed alteration in height and the difference in the levels in the containers when the pressure is applied depending on the ratio between the horizontal cross sectional areas of the container, which is set before taking a reading so that the effects of variation in temperatures or the acceleration que to gravity from standard values are eliminated from the observed reading. In the embodiment shown in Fig. 1 the apparatus comprises a leg 10 of uniform diameter glass tube, and a reservoir 11 comprising a cylindrical glass container, short in comparison with the leg 10 but also of accurate uniform cross section. A connecting tube 12 interconnects the two vessels which are mounted on a board (not shown), with their axes parallel. The scale 13 is adjustably mounted and can be moved relative to the leg 10 by means of a screw 14 in the bracket 15. A cover is provided for the reservoir on which are mounted posts 16 with spring clips 17 locating rods 18. A series of rods are provided by means of which the effective cross section area of the reservoir is modified to compensate for the effects of gravity and temperature. In a modification shown in Fig. 2 the reservoir 11 is arranged to tilt on trunnions with a scale 22. The movement necessary for temperature correction may be made by means of a bimetallic strip acting through a cam to vary the angular position of the reservoir. In use both the reservoir and leg are first connected to the same pressure so that there is no pressure difference. The corrections are worked out by means of formulae given and the necessary rods inserted or the reservoir is set at the required angle. The scale on the leg is then set to zero by means of a microscope, the pressure difference applied, and the new level in the leg noted by accurate means.
Patent GB-1491548-A (GB)
Title: Friction clutch for a motor vehicle
IPC: F16D23/14
Filed: 1975-02-12
Abstract: 1491548 Friction clutches SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 12 Feb 1975 [13 Feb 1974] 6065/75 Heading F2C In a diaphragm spring friction clutch a clutch release bearing 9 is mounted in the clutch cover 2 via a ring 8 which is flexible in the axial direction and rigid in the radial direction. The ring 8 is shown mounted (by vulcanizing or sticking) in a tubular portion 6 of the cover 2, although the tubular portion may be a separate member having a peripheral groove which the cover fits into (Fig. 3, not shown). The release bearing outer race can be connected to the ring 8 by vulcanizing or sticking, or a metal or plastics member (Figs. 4 and 5, respectively, not shown) secured to the ring 8 can have fingers or projections engaging a groove in the outer race. The clutch may be of the type disengaged by pulling on the release bearing 9, in which case the fingers 12 of the diaphragm spring engage in a groove of the outer race and the tubular portion 6 projects into the clutch (Fig. 2, not shown). The spring fingers 12 and the outer race of the bearing may have cooperating convex and concave surfaces.
Patent GB-803544-A (GB)
Title: Wells and well drilling fluid
Inventor: BURDYN RALPH FRANCIS
IPC: C09K8/22
Filed: 1957-02-22
Abstract: 803,544. Boring earth. SOCONY MOBIL OIL CO., Inc. Feb. 22, 1957, No. 6087/57. Class 85 A drilling mud comprises water, clay, defoamant, and a water-soluble, non-ionic compound characterized by the formula R-(X-[(CH 2 -CH 2 -O] n -H] m ) y  where in R is a hydrophobic group containing at least four carbon atoms, X is a structural element selected from the group consisting of O S // // -O-, -S-, -C -O-, -C -S-, O S O // // // -C -S-, -C -O-, -C -N<, O // and -C -NH-, n is a whole number, m is a whole number one less than the valency of the structural element X, y is a whole number, and the product of n, m, and y is at least 10. The non-ionic compound decreases the yield point, viscosity and gel strength of the mud and minimizes the effect of heat and increase in clay concentration on these properties. The properties are lower when the clay is added to water containing the non-ionic compound than when the non-ionic compound is added to a clay and water mixture. Any defoamant may be used but a preferred defoamant is a predominantly hydrophobic, non-ionic compound characterized by the formulae R<SP>1</SP>-(X-[(CH 2 -CH 2 -O)k-H]m)y wherein R<SP>1</SP> is a hydrophobic group containing at least twelve carbon atoms, k is a whole number, and the product of k, m and y is not greater than 3. Where oil is used as the defoamant it emulsifies with the water to form an emulsion drilling mud. The yield point, viscosity and gel strength of the mud are reduced by the addition of a water-soluble inorganic salt to the mud. The salt may be supplied by employing sea water as all or part of the aqueous phase of the mud. Where salt is present in the mud a water loss reducing agent is added. A drilling mud according to the invention containing sodium form clay may be converted to a calcium type mud by the addition of a water-soluble calcium compound, and a drilling mud according to the invention of the calcium type may be converted to a sodium type by the addition of a sodium compound.
Patent GB-632316-A (GB)
Title: Improvements in or relating to a process of producing a solid ethylene polymer and the product resulting therefrom
IPC: C08F10/00
Filed: 1947-03-04
Abstract: Diformate peroxides of the formula <FORM:0632316/IV (a)/1> wherein R1 and R2 are monovalent radicals, e.g. methyl, ethyl, propyl, butyl, amyl, benzyl, phenyl, tolyl, cyclopentyl, methycyclopentyl, cyclohexyl, vinyl, allyl and propenyl, or form together a divalent radical, are used as catalysts in the polymerization of ethylene or mixtures thereof with unsaturated organic compounds at temperatures between 0 DEG  and 100 DEG  C. and pressures of 500 to 10,000 pounds per sq. inch.  The catalyst may be formed in situ by using carbethoxyazotriphenylmethyl and oxygen or substances releasing oxygen.  Polymeric peroxides formed by the reaction of sodium peroxide and ethylene glycol bis-(chloroformate) may also be used. Solvents, e.g. benzene, methanol, n-butanol, pentane, hexane, carbon tetrachloride, chloroform and trichloroethylene and polymerization regulators, e.g. tetramethylthiuram disulphide, mercaptans, hexachlorethane and trichloropropionitrile may be used.  The ethylene may contain ethane, propane, propylene, butanes, n- and iso-butylenes and acetylene.  Oxygen, nitrogen and sulphur impurities may be removed by fractional distillation, by contacting with benzoyl peroxide or by treatment with sodium or sodium-potassium alloys at 125 DEG  to 150 DEG  C. under a pressure equal to or above the polymerization pressure.  The reaction mixture may be " seeded " with previously prepared polymer and polymerization may be effected as a batch, semi-continuous or continuous process in a tubular vessel. The products may be fractionally precipitated from hot xylene by ethanol, purified by filtration through filter clay or active carbon or purified and fractionated by molecular distillation.  They may be compounded with polyisobutylene, paraffin wax, synthetic hydrocarbon waxes, plasticisers, extenders, antioxidants, tackifiers, pigments, dyes and fillers, and used for moulding, electric insulation, moisture-proof coatings and wax-substitutes.
Patent GB-607190-A (GB)
Title: Improvements relating to prefabricated metal cycle parks
IPC: E04H6/00
Filed: 1946-02-28
Abstract: 607,190. Cycle parks. CONSTRUCTORS, Ltd., and FINER, H. J. Feb. 28, 1946, No. 6304. [Classes 20(i) and 20(ii)] A roof-supporting truss for a prefabricated metal cycle park of the type comprising a roof supported upon spaced trusses which extend to the ground and consist of an assemblage of metal uprights and other bars preferably of angle section rigidly connected together, is characterized in that the various bars are connected together by welding, e.g., arc-welding The various elements may be held in a jig during welding. In the design illustrated cleats 5 welded to members 4 engage purlins for support of the roof. The frames may have a covering of flat or corrugated sheet metal to form partitions or end walls. In a modification, the members 4 may slope in the opposite direction and an extra horizontal bar, having one end welded to the top of the shorter upright, may be inserted.
Patent GB-966315-A (GB)
Title: Apparatus for conveying and stacking bricks
IPC: B65G67/14
Filed: 1961-02-21
Abstract: 966,315. Stacking bricks. MASCHINENFABRIK BACKAU R. WOLF A.G. Feb. 21, 1961 [Feb. 25, 1960], No. 6308/61. Heading B8C. Apparatus for stacking bricks on trolleys includes a depositing table which moves to and fro between a pair of conveyers each having suction grippers. As shown, an assembly consisting of a group of suction grippers 5 is reciprocated horizontally as indicated (Fig. 3). From the left-hand end position A the righthand gripper of the assembly is lowered to pick up a group of bricks from the press 1, the assembly moves to the right to position the next gripper above the press. This gripper picks up a group of bricks and the process continues until the last gripper is above the press. As this last gripper is lowered the others are all also lowered to deposit their bricks on a table 21. The assembly then moves back to the left to deposit a further set of bricks on a table 22. The tables 21, 22 are moved by means of a lever 25 to the position indicated in broken lines (Fig. 1) where they are picked up by suction grippers 15 mounted on a carriage 27 which moves on rails 28 to deposit the bricks on a pair of trolleys 9. Specification 879,137 is referred to.
Patent GB-758856-A (GB)
Title: An improved combination woodworking machine
IPC: B27C9/04
Filed: 1954-03-05
Abstract: 758,856. Belt gearing. WOLFENDEN, C. R., and WOLFENDEN, N. E., [trading as WOLFENDEN & CO.. C]. Feb. 16, 1955 [March 5, 1954], No. 6419/54. Class 80(1) [Also in Group XXIII] A woodworking machine has a saw shaft 6 and planer shaft 7 and a belt drive 14 from a motor pulley 16 engages a pair of free-running pulleys 18 19 on a rotatable carrier 20. In the position shown, the pulleys 18, 19 hold the upper run of the belt clear of a pulley 13 on the shaft 7, so that only the shaft 6 is driven by its pulley 12 but by rotating the carrier through almost a complete turn the upper belt is raised to engage the pulley, thus driving both shafts, and the slack in the belt is takerr up by the pulley 18, producing a bight in the verticle run to the motor pulley 16. A multi-toothed collar on the shaft 21 for the carrier engages a similar fixed collar on the machine frame under spring-loading and holds the carrier in adjusted position with the required tension on the belt.
Patent GB-106489-A (GB)
Title: Process for the Preparation of Anhydrous Sulphide of Zinc.
Inventor: COMMENT PAUL
IPC: C01G9/08
Filed: 1917-08-05
Abstract: 106,489. Comment, P. May 6, 1916, [Convention date]. Zinc sulphide.-White and stable zinc sulphide is obtained by fusing a mixture of an alkali sulphate, zinc sulphate, and zinc persulphide; or a mixture of zinc-alkali sulphate and zinc persulphide. A suitable mixture may be made by adding alkali pentasulphide to zinc sulphate solution and evaporating the mixture. The alkali sulphate remains unchanged and is recovered by washing.
Patent GB-822643-A (GB)
Title: Electrical registering apparatus for use in transmitting digital information from a mechanical accounting or similar calculating machine
Filed: 1956-03-02
Abstract: 822,643. Calculating-apparatus. BURROUGHS CORPORATION. March 2, 1956 [March 4, 1955], No. 6689/56. Class 106 (1). [Also in Group XXXVII] Apparatus for signalling electrically the position of a movable part of a machine, such as a differential actuator of an accounting machine, comprises switches, and actuating means therefor movable with the movable member, the switches being set in accordance with the position of the movable member by relative movement between the latter and the actuating means. As described, each of the twelve differential actuator racks 511 of the accounting machine described in Specification 709,181 carries a pair of bars 83, 84 each formed with a projection 88 and a spaced recess 86, the recess on one being aligned with the projection on the other. At a point in the machine cycle when the actuators are in their differential positions corresponding to digits to be printed from the type bars 562, cams on the mainshaft 126 rock a shaft 20 carrying cam-plates 76, 78 which in turn rock arms 62, 64 to raise a switch assembly 58 mounted between them. The assembly comprises, for each actuator (decimal order), five double switches (see Group XXXVII), such as the one shown in Fig. 7, operated, when the assembly is thus raised, through plungers 110, 112, under the control of the bars 83, 84. Where a projection 88, aligned with a recess 86, is effective, contacts forming one side of the corresponding double switch are closed but elsewhere the switches are set in neutral positions in which contact pairs on both sides remain open. Thus, in each order, a single contact pair is closed, corresponding to the digit to be printed in that order. The switches remain in their set positions until the next machine cycle. For read-out purposes, all of the switches corresponding to the same digit are connected and pulses of durations corresponding to the ten digits are applied to the groups of connected switches by means of contact strips on a drum 140, Fig. 14. The other contacts of the switches are connected in columns corresponding to the decimal orders and each column is associated with a solenoid 151 which, when deenergized, arrests a corresponding indicating or type-wheel 144. The wheels 144 are frictionally driven so that each is rotated during the application of the digit pulses by an amount corresponding to the closed switch in the associated column of switches. Specification 813,322 also is referred to.
Patent GB-483410-A (GB)
Title: Improvements in pyrophoric lighters
IPC: F23Q2/08
Filed: 1937-03-08
Abstract: 483,410. Frictional pocket igniters. THORENS SOC. ANON., H. March 8, 1937, No. 6760. Convention date, March 28, 1936. [Class 75 (iii)] In an igniter of the kind described in Specification 378,356, the common spring 8 controlling the wick-cap 7 and the lever 10 is carried by a disc 18, loosely mounted on the pivot 4 of the friction-wheel 6 and wick-cap 7 and provided with a pawl 22 for actuating the wheel 6 when the cap 7 is opened. The spring consists of arms 14, 17 extending from inner and outer coils 15, 16 and is made from a single wire. In assembling, the arm 17 is engaged in a hook 20 on the disc and the arm 14 is passed through the central hole 19 and engaged in a hook 21 so that the spring is stressed. The disc and spring are then mounted on the pivot 4, the arm 17 is attached to the snuffer 7a and, finally, the lever 10 is mounted on the pivot 5 thereby disengaging the arm 14 from the hook 21 and further stressing the spring.
Patent GB-402969-A (GB)
Title: Improvements in fuses for projectiles
IPC: F42C15/26
Filed: 1933-03-06
Abstract: 402,969. Projectile fuzes. SCHNEIDER ET CIE, 42, Rue d' Anjou, Paris. March 6, 1933, No. 6761. Convention date, Dec. 20, 1932. [Class 9 (i).] Relates to percussion fuzes comprising a direct-action striker b and a fixed or momentum percussion cap holder d<1> separated by a safety device such as centrifugal segments e, which move out during flight, the direct-action striker being moreover held by a pin c until impact. According to the invention, a gap x is left between the safety device e and a shoulder b<1> of the striker b, so that on discharge while the safety device e is still in position the striker b sets back sufficiently to begin the shearing of the pin c. This weakens the pin and makes the fuze more sensitive on impact. This improvement may be applied to the percussion fuzes described in Specifications 280,859 and 315,852, [both in Class 9 (i), Ammunition &c.].
Patent GB-1548145-A (GB)
Title: Telephones
IPC: H04M1/737
Filed: 1978-02-21
Abstract: In a cordless telephone subscriber station, the connection between the microtelephone (2) and the subscriber station (1) is set up with the aid of IR links (3-5, 4-6). The circuits provided in the microtelephone are powered by a rechargeable battery which is charged from the subscriber line when the microtelephone is on-hook. <IMAGE>
Patent GB-1132788-A (GB)
Title: Film supply
IPC: B65H65/00
Filed: 1966-02-17
Abstract: 1,132,788. Photographic film assemblies. EASTMAN KODAK CO. Feb.17, 1966 [Feb.24, 1965], No.6949/66. Heading G2A. A film supply assembly comprises a spoolless roll (10) of film Fig. 1 (not shown) having a leader portion 11 narrower than the rest of the film 13, and a spool 12 having spaced annular winding surfaces 21 with a trough (22) Figs. 3-5 (not shown) therebetween into which trough the leader portion is forced by a tool (23) (Fig.4) and is secured therein by staking tabs 20 which are disposed beneath the level of the winding surfaces and overlie the leader portion. The tool (23) forces the edges of the leader portion to curl upwards (Fig. 4) and then a staking tool 26 forms tabs 20 out of the edges of the surfaces 21 and forces them down into the trough (22) (Fig. 5). The spool is made of a synthetic plastics material, and may be cold worked. Alternatively the staking tool 26 may be heated.