baber/WOPTO huggingface dataset:
Patent GB-1516829-A (GB)
Title: Polyester compositions
IPC: C09D167/00
Filed: 1977-05-05
Abstract: 1516829 Epoxy resin polyester composition DYNAMIT NOBEL AG 5 May 1977 [15 May 1976 18985/77 Heading C3B [Also in Division C2] A composition, suitable for powder coating, comprises (I) an epoxy resin, (II) a polyester containing free carboxyl groups and (III) as catalyst a titanium and/or zirconium chelate. I may be a glycidyl ether of bisphenol A or triglycidyl isocyanurate. A typical II is prepared from trimethylolpropane, neopentyl glycol and dimethyl terephthalate. III may have the formula in which M is Ti or Zr; R<1> is H, alkyl, hydroxyalkyl, cycloalkyl, hydroxycycloalkyl, aralkyl or hydroxyaralkyl ; R is a propylene radical assymetrically substituted by at least one alkyl radical, obtained by reaction of M(OR<1>)4 and R(OH)2, e.g. by reaction of tetraisopropyl titanate with 2,2,4-trimethylpentane-1,3-diol, optionally in admixture with other diols.
Patent GB-515725-A (GB)
Title: Improved manufacture of zirconium compounds
IPC: C01G25/06
Filed: 1938-06-27
Abstract: 515,725. Zirconium compounds. ALLEN (STOCKTON), Ltd., A. G., and TYRER, D. June 27, 1938, No. 18999. [Class 1 (iii)] Solutions containing zirconium and sulphuric acid in proportions corresponding to Zr(SO4)2 and produced by sulphatizing crude zirconium oxide material, for example, a ground ore or residue, with sulphuric acid, are treated with an alkaline earth oxide or hydroxide, e.g. milk of lime, in such proportion that 50-60 per cent. of the sulphate ions are precipitated, the solution is filtered from the alkaline earth sulphate, a hydrochloric acid solution containing 2-10 per cent. H.Cl reckoned on the weight of the filtrate is added thereto, and zirconium hydroxide or carbonate then added whereby basic zirconium sulphate, preferably with a ZrO2/SO4 ratio of 1:0.6, is slowly precipitated, the precipitation being hastened by heating to 90‹C. The basic sulphate, which may be washed with dilute hydrochloric acid, may be decomposed by alkali or ammonium hydroxide or carbonate, the zirconium hydroxide or carbonate being used in part for the above purpose. The calcium sulphate separated may be washed with untreated zirconium sulphate solution, then with water or dilute sulphuric acid, the washings being used in leaching a fresh batch of sulphatized raw material.
Patent GB-757055-A (GB)
Title: Improvements in feeding devices for record card machines
IPC: G06K13/12
Filed: 1954-06-29
Abstract: 757,055. Statistical apparatus. MAUL, M. June 29, 1954, No. 19055/54. Class 106 (1). A record card controlled machine is provided with the usual card feeding path, magazine and receiving pocket and a card turning device which turns the cards in the card feeding path and passes them to the feeding means after turning. After analysis the cards are fed by means of feed rollers 15 on shaft 14, Fig. 3, to the turning device so that the front edge of the card has passed between the rollers 16. The latter engage the card and feed it under pairs of rollers 17, 18. Higher speed of the rollers 16 relative to the rollers 15 is provided for so that there is a sufficient distance between the cards at the turning point to allow the turning movement to take place without interference from the following card. The turning device is driven by belt disc 19 connected to toothed sectors 21, 22. Figs. 4 and 6 mounted on stud 30. The drive of the turning rollers 17 is taken via toothed sector 22 which drives the toothed wheel 27 secured on the shaft 25. An idle gear 33 is inserted in the drive between gears 34 and 36 so that the sleeve 38 rotates in opposite direction to the shaft 31 and the sleeve 35 opposite to the shaft 25 so that the card is turned as indicated by the arrow in Fig. 3. A lifting device is provided so that the feed rollers and turning rollers are not both in engagement with the card at the same time. A slide 41, Fig. 4, having inclined planes is mounted for reciprocating movement in the guides 42, 43. A lever 45 fast on shaft 44 is controlled by a cam 46 which is connected to the belt disc 19 synchronously with the card feed. When the card centre is exactly between the turning rollers 17, 18, the cam 46 moves the lever 45 which moves the slide 41 to the left, Fig. 4, while the lever 47 moves the slide 48 to the right, Fig. 5. The inclined planes of the two slides are now provided in such a way that in this movement to the left and to the right the turning rollers 17, 18 engage the card and the feed rollers 16 are lifted, as shown in Fig. 6. The sector 21 and rollers 17, 18 are so dimensioned that the card is rotated for 180 degrees, the cam 46 then permits the lever 45 to rock to the right, Fig. 4, under the spring 52, the lever 47 rocks to the left correspondingly and the two levers move the slides 41, 48, so that the rollers 16 are lowered on to the card and the turning rollers 17, 18 are raised. In other embodiments, Figs. 7 and 8 (not shown), the card turning means comprises a rotatable clamping member to which and from which the card is fed.
Patent GB-749964-A (GB)
Title: Shutter speed setting and film re-winding device for photographic cameras
IPC: G03B17/42
Filed: 1954-06-30
Abstract: 749,964. Photographic cameras. AGFA CAMERA-WERK AKT.-GES. June 30, 1954 [Oct. 24, 1953], No. 19242/54. Class 98 (1). A combined shutter speed setting and film rewinding device for a focal plane shutter photographic camera having two blinds comprises a gear 5 carrying an arcuate spiral cam surface 7 which gear rotates freely on the bush 4 when the first shutter blind is released, causing the cam 7 in co-operation with a stud 6c to lift the sleeve 6 upwards so that the upper surface 6e of the flange 6b pivots the lever 11 and operates the second shutter blind. The shutter speed depends on the initial angular position of the, stud 6c on the spiral cam surface 7 and is set by turning the knob 16, which turns the ring 13 by means of the pin 15 and the ring 13 turns the sleeve 6 by means of the pin 14. The long shutter speeds are controlled by the edge 6d of the disc 6b being formed as a cam which cooperates with lever 9. In normal use, the spindle 17 of the knob 16 is out of engagement with the key 18 which fits into the core of the film spool. To rewind the film the knob 16 is pulled out, the ball 24 is released from groove 17a and engages groove 17b, in which position the squared end of the spindle engages in the square 18 of the key, and at the same time the knob 16 becomes disengaged from the pin 15. On pulling the knob 16 out further so that the ball 21 engages in the groove 17c, the key 18 is withdrawn from the spool and the latter can be removed from the camera.
Patent GB-1262013-A (GB)
Title: Improvements in and relating to planar diffused semiconductor capacitors
IPC: H01L21/00
Filed: 1969-04-15
Abstract: 1,262,013. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORP. 15 April, 1969 [17 April, 1968], No. 19287/69. Heading H1K. The major portion of a planar diffused junction in a semi-conductor capacitor comprises a series of interconnected arcs when viewed in a plane perpendicular to the planar surface of the device. In the Si PN-junction capacitor illustrated the apertures formed in a SiO 2  coating to define the extent of B-diffusion into an N-type substrate 15 comprise two mutually perpendicular intersecting sets of parallel strips spaced apart to such a degree that the diffusion fronts just overlap in the manner shown. In a modification the diffusion fronts do not overlap, but a shallower, higher concentration P-type zone (31), Fig. 6 (not shown), is formed by a subsequent B-diffusion process to interconnect all the hemispherical B-doped zones. One of the two sets of parallel strips may be omitted. Al electrodes are provided as shown at 22 on the diffused P-type region and also on a P-diffused n+contact area elsewhere in the substrate 15. Details of the preferred B and P diffusion processes are given, alternative processes involving a two-stage drive-in technique or a single-stage process resulting in a complementary error function distribution.
Patent GB-187323-A (GB)
Title: An improved padlock
IPC: E05B67/10
Filed: 1921-07-18
Abstract: 187,323. Phipps, W. July 18, 1921. Locks, revolving-barrel; padlocks.-The shackle of a padlock is locked by a member which is brought into engagement with it on closing the shackle and blocked against release by the periphery of a revolving barrel of the pin tumbler type. Fig. 4 shows the padlock in the open position. When the shackle nose u is pressed home into the aperture g of the casing, it presses down the spring plunger h and engages the abutment s on the locking member E pivoted to the casing A at m, rocking the member until the projection q engages the notch t in the shackle. This frees a projection o at the rear of the locking member from a notch p in the revolving barrel B, which is then turned automatically by a spring v to block the locking member E against release from the shackle. To release the shackle, the kev d is inserted and the barrel turned until the notch p is again opposite the projection o, when the spring plunger h forces out the shackle and also rocks the member E into engagement with the barrel. The barrel may be turned for blocking the locking member by a spring plunger y and spring v.
Patent GB-657896-A (GB)
Title: Improvements to steering-wheels
IPC: B62D1/04
Filed: 1949-08-17
Abstract: 657,896. Hand wheels. GILBERT, E. M. Aug. 17, 1949, No. 19303/48. [Class 80(iv)] The rim 2 of a steering wheel is provided with a wooden, metallic or plastic knob 10 which is rotatable on a bolt 7 clamped to the rim. The bolt 7 passes through a sleeve 8 abutting a saddle 3 and engages a nut 4 riveted to a metal band 1 which is passed around the rim 2 to engage a hook 6 on the nut. The sleeve 8 may be replaced by a shoulder on the bolt. The bore of the knob may be bushed or provided with ball bearings, and in order that its top surface may be continuous the knob may be retained on the bolt 7 by a set screw engaging a groove therein. Two diametrically opposed knobs may be provided on the rim or spokes of a steering wheel or on a steering arm replacing the wheel.
Patent GB-1421106-A (GB)
Title: Anti-lokc venhicle brake systems
IPC: B60T8/1763
Filed: 1974-05-02
Abstract: 1421106 Antiskid braking systems MULLARD Ltd 2 May 1974 19310/74 Heading F2F An antiskid braking system comprises means responsive to an input signal, having a value which is a function of wheelspeed, to produce an output for causing energization of a solenoid valve when the value undergoes a change corresponding to a change in wheel speed at a rate exceeding a first predetermined rate and by an amount greater by a predetermined percentage than the change would have been had it continued at the said first predetermined rate, which corresponds to a reference rate of wheel deceleration, means also responsive to the input signal to store an initial reference velocity signal that has a predetermined relationship with actual wheelspeed then obtaining, means responsive after a predetermined period for decreasing the stored velocity signal at a second predetermined rate of change greater than the first and for a variable period whose duration is a function of the stored velocity signal means responsive following said variable period for increasing the stored signal at a third predetermined rate of change until it attains a predetermined value having a predetermined relationship with the initially stored reference velocity signal, means responsive following said attainment to decrease the stored signal at a fourth predetermined rate of change and means responsive to the input signal for terminating the output whenever the input value corresponds to a wheelspeed having a predetermined relationship with the prevailing stored velocity signal. A brake pedal FP operates a pressure modulator M controlling the application of fluid pressure from a source S to a wheel brake WB and an antiskid control unit CU is provided between source S and brake WB. A frequency/ D.C. converter 10 receives pulses from a wheel sensor 11 and applies a D.C. signal to a slip detector 12, a speed signal store 13 and a comparator 14, output from detector 12 setting a bi-stable element 15 which produces via an automatic turn-off element 16 an output which turns on a stage 17 for energizing a solenoid 18.
Patent GB-1056013-A (GB)
Title: Gas liquefaction with vapour compression and gas expansion cycles
IPC: F25J3/06
Filed: 1965-05-07
Abstract: 1,056,013. Liquefaction of methane. CONCH INTERNATIONAL METHANE Ltd. May 7, 1965 [July 15, 1964], No. 19329/65. Heading F4P. Compressed natural methane is passed from a feed line 1 through heat exchangers 2, 3 cooled by an external evaporating refrigerant, e.g. propane circulated by compressors 8, 18, and the so-cooled compressed feed gas is further cooled and condensed by heat exchange at 22, 23, 24 with a wholly gaseous refrigerant which has been compressed at 37, 38, 39, 41 cooled by heat exchange at 13, 21 with a portion of the evaporating propane and expanded at turbines 47, 48. As described the wholly gaseous refrigerant comprising methane withdrawn from a product storage vessel 31 at ambient pressure through a line 34 leading to the inlet of compressor 37 where it is joined by methane gas withdrawn from a flash vessel 28 through a line 30 and by expanded methane from tubine 48 after traversing exchangers 22, 23, 24.
Patent GB-948171-A (GB)
Title: Method and apparatus for increasing the air-permeability of films or sheets
IPC: A24C5/00
Filed: 1961-05-30
Abstract: 948,171. Abrasive blasting. OLIN MATHIESON CHEMICAL CORPORATION. May 30, 1961 [June 10, 1960], No. 19545/61. Heading B3D.  The air-permeability of a web of paper (particularly cigarette paper) regenerated cellulose or plastic; e.g. polyolefin, film is increased by continuously advancing the web over a cylindrical anvil and directing solid particles, dispersed in a jet or plurality of jets of fluid, substantially at right angles to the web, as it passes over the anvil, to form, as by sand blasting, microscopic rents, perforations or openings in the web. The web W, Fig. 1, is passed from a roll S, through a slot 14 into a chamber 10, then around part of the periphery of an anvil roller 16 therein. Jets of air are directed, through tubes 21, against the outer surface of the web and particles of sand, fed into the jets through tubes 20 branching into the tubes 21, impinge against the web. The particles of sand are fed into the tubes 20 in the following manner. Particles of sand pass, from the outlet 27 of a reservoir 22, into the middle of a horizontal trough 29 and are distributed along it by a screw conveyer 23 having flights 24 and 26 of opposite hand. Particles of sand fall through outlets 28 in the base of the trough on to a rotating roller 31, which distributes them into U-shaped troughs 33. The tubes 20 are connected to the lowest parts of the troughs 33. Baffles 34 and 36 are provided in the chamber 10 to deflect rebounding particles of sand to the bottom of the chamber, from which they are drawn back, through a conduit 37, into the reservoir 22. The web emerges from the chamber 10 through a slot 17 and passes over an abrading roller 11 and then between a  roller 39 and knives 38 and is slit into strips, which are wound into rolls 13. Both sides of the web may be sand blasted as by jets 46 and 47, Fig. 2.
Patent GB-843556-A (GB)
Title: Means for following the level of the surface of a fluent material
Inventor: ENSOR GERALD
IPC: G05D9/12
Filed: 1957-06-21
Abstract: 843,556. Electric tests. FIELDEN ELECTRONICS Ltd. June 10, 1958 [June 21, 1957; June 10, 1958], No. 19553/57 and 39229/57. Class 37. Means for following the level of the surface of a fluent material comprises a relay sensitive to the capacitance of an electrode suspended above the surface, a reversible motor arranged respectively to raise or lower the electrode when its displacement is less than a first predetermined value or greater than a second predetermined value and inoperative when the displacement is intermediate the first and second values. Fig. 1 shows a system for measuring the level 1 of petroleum contained in a tank 2. The measuring head comprises a hermetically sealed housing 5 containing an electrode 9, Fig. 2 and a capacity sensitive relay, 4, suspended by a metallic strip 6 via pulleys 15, 16 from a drum 17. The relay 4 is connected to a motor control relay 22 via a lead 25, the slack 27 being taken up by pulleys. The measuring head is suspended within a metal tube 13 having ports 14. A shield 10 is shaped to act as a diving bell thus preventing immersion of the electrode 9 in the event of immersion of the housing 5. In Fig. 3 (not shown) the shield 10 is omitted and the lower end of the housing 5 is closed by the electrode, a guard ring and two insulating sleeves being provided. Fig. 4 shows the electrode 9 connected to a transistor oscillator 36 so that changes in the electrode capacitance due to variation of the level 1 vary the amplitude of oscillation. Amplitude variations are detected by the transistor 41 and result in changes in the' D.C. voltage at the base of transistor 45. The difference voltage between the base of transistors 45, 44 is amplified by transistors 53, 43, and, if, sufficiently great, energizes one of relays 55, 56, the contacts 61 of which cause a reversible motor 18 to drive the drum and hence restore the position of the measuring head 5 relative to the level 1. The new level 1 is indicated at 19. Hunting is minimized by arranging that the electrode 9 takes up a position between two predetermined values relative to the level 1. The separation between these values may be adjusted by variation of the common bias on transistors 53, 54. Both values may be varied in the same direction by adjustment of the base bias transistor 44. Valve circuits may replace the transistor circuit. Specifications 645,732 and 697,253 are referred to.
Patent GB-172588-A (GB)
Title: Improved stamping-ink
IPC: C09D11/08
Filed: 1921-07-22
Abstract: 172,588. Schiffmann, J. July 22, 1921. Ink.-Black ink for stamp-inking pads consists of a mixture of tannate, gallate, or gallo-tannate of iron and a colour substance insoluble in water,. such as aniline black, dissolved by heating in acetin, a small quantity of carbon black being stirred into the solution.
Patent GB-1307591-A (GB)
Title: Method of making coated steel plates high in anticorrosiveness
Inventor: ASANO HIDEJIRO
IPC: B05D7/14
Filed: 1970-04-24
Abstract: 1307591 Coating steel sheets NIPPON STEEL CORP 24 April 1970 [28 April 1969] 19772/70 Heading C7F Steel sheets are coated with an aqueous solution containing Ni acetate and/or nitrate and at least one of the acetates or nitrates of Cr, Mn, Zn and heated in a non-oxidizing atmosphere to form a coating containing Ni and at least one of the oxides of Cr, Mn, Zn. The solution may also contain an acetate and/or nitrate of Al. The coating solution preferably contains 0À5-100g/l Ni ions, <20g/l Cr<SP>+++</SP> ions, <20g/l Al ions, <20g/l Mn ions and <40g/l Zn ions. About 1g/l of a nitrate or acetate of Mg, Ca or K and a non-ionic surface active agent may also be added. The coating is fired during the annealing of the cold mold strip at 200-750‹C in an atmosphere containing 2-20%H 2  and the balance mainly N 2 . The coating formed may be < 1 micron and may be coated with a lacquer for use in canning in place of tinplate.
Patent GB-655901-A (GB)
Title: Improvements in or relating to ophthalmic contact lenses
IPC: B29C43/00
Filed: 1948-07-24
Abstract: 655,901. Contact lenses. STIDWILL, L. July 24, 1948, No. 19841. [Class 97 (i)] [Also in Group V] An ophthalmic contact lens is formed of thermoplastic material, e.g. polymethyl methacrylate and the inner surface of the haptic thereof is formed with a conical area 5, which extends from the optic 1 and is blended into a rear spherical portion 3 of the haptic, an annular pocket 4 being provided at the junction of said conical and spherical portions. Apparatus for forming the lens comprises a base 8 supporting a cylindrical body 9 and an electric heater 10. A moulding unit 11 is detachably screwed to body 9 and includes a socket 12 supporting a die 19 having a spherical cavity 20. Clamped marginally between a cylinder 22 and a spacing ring 21 is a sheet 33 of thermoplastic material and axially adjustable in the cylinder and a packing ring 23 is a cylindrical pressing tool 24, the lower end 29 of which is spherical. The tool which is slidable in the cylinder under the control of a milled knob 18, includes a conical seating 26 for a steel ball 30, said seating having a shank 27 screwed into a bore 28 whereby the seating is axially adjustable in the tool to vary the degree of projection of ball 30 from the lower end 29 of the tool. In use, the sheet 33 is heated until the plastic material is workable and the tool 24 is moved downwardly so as to stretch the sheet and thus form the contact lens. Specification 634,178 is referred to. Reference has been directed by the Comptroller to Specification 666,319.
Patent GB-327352-A (GB)
Title: Fingerless polishing glove
IPC: A47L23/10
Filed: 1929-06-28
Abstract: 327,352. S³ss, O., and S³ss, O., (trading, as S³ss & Strauch). June 28, 1929. Gloves.-A fingerless polishing glove with several working surfaces, consists of four pieces of cloth 1,2,3 3 and 4 lying on each other and sewn together along the edges with the exception of the rear edges 9. By turning the glove inside out either the cloth pieces 1, 2 or the pieces 3, 4 may constitute the polishing surface; the two outer sides of the glove then form a hollow space into which the hand is inserted for polishing. When the glove is not being used, the hollow space 8 serves to accommodate boot-cleaning implements.
Patent GB-1287240-A (GB)
Title: Improvements relating to phosphor recovery
IPC: C01F17/224
Filed: 1971-06-10
Abstract: 1287240 Luminescent materials and uses thereof PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 June 1971 [13 June 1970] 19908/71 Heading C4S A method of recovering a rare earth metal phosphor from a mix containing also a sulphide and/or selenide of Zn and/or Cd, comprises treating with an aqueous alkaline solution containing a hypohalite and of pH>12 until the sulphide and or selenide is dissolved, separating the rare earth and washing with water. The rare earth metal may be Y. The hypohalite may be NaOCl, KClO, Ca(ClO 2 ), CaClOCl, or NaBrO, the alkaline solution may contain #4 grms. of hypohalite/grm. mol. of sulphide and/or selenide treated, #1 grm. mol. of strong base/litre (e.g. NaOH or KOH) and the rare earth phosphor rinsed with diluted acid before water washing to remove any hydroxide film on the particles. The initial mix may be dry or moist, the hypohalite oxidizes the S and/or Se to form soluble sulphates and selenates and treatment period depends on sulphide and/or selenide concentration, chemical resistance of same which is also determined by crystal shape and size on the hypohalite concentration and temperature which may be room temperature or boiling point for example. The washing removes the p.v.a. present and traces of Cr are dissolved by the above method. The recovery is particularly applicable to photosensitive slurries as used in the production of red, green, blue dot or line colour TV c.r.t.s. The rare earth phosphors may be red luminescing Eu or Sm activated oxides, vanadates or oxysulphides with blue ZnS : Ag and green ZnCdS : Ag. Combinations included are Y 2 O 2 S-Eu, (Zn, Cd)S and ZnS containing 9À1% by wt. ZnS and 0À16% by wt. CdS; Y 2 O 2 S-Eu, ZnS, (Zn, Cd)S with 0À45% by wt. ZnS and 0À08% by wt CdS, (to which 2 grms. of bromine were added as oxidizing agent to form NaBrO); YVO 4  : Eu, ZnS, (ZnCd)S with 2% by wt. of ZnS and 0À3% by wt. CdS. Y 2 O 3  : Eu, ZnS, (Zn, Cd)S with 2À3% by wt. ZnS and 0À4% by wt. CdS; La 2 O 2 S : Eu, ZnS and (Zn, Cd)S with 6À0% by wt. ZnS and 0À6% by wt. CdS; Gd 2 O 3  : Eu, ZnS, (Zn, Cd)S with 0À45% by wt. ZnS and 0À08% by wt. CdS. The oxides and oxysulphides other than of lanthanum finally contained < 0À01 % by wt. sulphides, and the vanadate and lanthanum oxysulphide <0À02%.