baber/WOPTO huggingface dataset:
Patent GB-923189-A (GB)
Title: Process for making very low density cellular polystyrene articles
IPC: C08J9/232
Filed: 1961-04-11
Abstract: Cellular polystyrene is made by charging a perforated mould with sufficient partially but incompletely expanded polystyrene particles-containing residual amounts of an organic liquid expanding agent b.pt. 10 DEG -80 DEG C.-to form an expanded product filling the mould having a density of 0,4-0,8 lbs./cu. ft.; passing saturated steam into the mould to purge the mould of air, to achieve a steam pressure of 13-20 lbs./sq. inch and to cause the particles to expand and fill the mould; venting the steam pressure in the mould; removing the expanded product from the mould at a temperature of 200 DEG -220 DEG F. to allow the demoulded product to continue to expand outside the mould; and finally cooling the resulting product.ALSO:Cellular polystyrene is made by charging a perforated mould with sufficient partially but incompletely expanded polystyrene particles-containing residual amounts of an organic liquid expanding agent b.pt. 10-80 DEG C.-to form an expanded product filling the mould having a density of 0,4-0,8 lbs./cu. ft; passing saturated steam into the mould to purge the mould of air, to achieve a steam pressure of 13-20 lbs./sq. in. and to cause the particles to expand and fill the mould; venting the steam pressure in the mould; removing the expanded product from the mould at a temperature of 200-220 DEG F. to allow the demoulded product to continue to expand outside the mould; and finally cooling the resulting product.  Expanding agents mentioned are methyl alcohol, methyl chloride, dichloroethane, low boiling chlorofluoroalkanes, pentane, hexane, heptane, cyclopentane, cyclohexane, cyclopentadiene and petroleum ether and mixtures.
Patent GB-1109270-A (GB)
Title: Method of cross-linking amorphous polymers and copolymers of ª-olefins
IPC: C08K5/07
Filed: 1967-03-21
Abstract: Amorphous a-olefin polymers are cross-linked by heating above 130 DEG C. mixtures thereof with a compound which forms free radicals at the temperature to which the mixture is heated, and dibenzal acetone or a substitution derivative thereof.  The polymer may be an ethylene/ propylene copolymer.  Specified radical forming compounds are dicumyl peroxide, 2,5-di-(t-butylperoxy) - 2,5 - dimethylhexyne - 3 and a,a1 - di - (t - butylperoxy) p - diisopropylbenzene. Specified dibenzal acetone derivatives are 3,31 - dimethyl and 2,21 - dichlorobenzal acetone. Sulphur and fillers, e.g. carbon black, silica, alumina, calcium carbonate and kaolin may also be present.  Besides promoting cure the dibenzal acetones are said to have light stabilizing, insecticidal and fungicidal functions.
Patent GB-528796-A (GB)
Title: Improvements relating to light-polarizing devices
IPC: G03B35/00
Filed: 1939-05-03
Abstract: 528,796. Pictures. INTERNATIONAL POLAROID CORPORATION. May 3, 1939, Nos. 13266 and 13267. Convention dates, May 11, 1938, and May 20, 1938. [Class 11] [Also in Group XX] Polarizing devices comprise (1) two superposed contiguous or spaced layers of polarizing material each having a,separate pattern or image composed of areas differing in polarizing power, or (2) a layer bearing an image varying in polarizing power in accordance with a photographic image; the superposed images may be the members of a stereoscopic pair, and may be carried by kinematograph film, images being projected therefrom by unpolarized light and viewed through an analyser. The polarizing material may be a crystal or orientated crystals of herapathite &c. and the polarizing effect may be locally destroyed by chemical action or by ultra-violet radiation; alternatively polarizing material may be removed, or its first deposition may be controlled. A photographic original may be used in the preparation of the surface, either by applying to the surface a gelatin relief carrying the destructive solution, or by printing with ultra-violet radiation through a transparency opaque to such radiation. The polarizing material may be unsupported by a base, or may be carried by a transparent or opaque support of paper, glass, cellulose derivative, resin, artificial resin, metallic foil &c. The Figure shows a kinematograph film comprising a support 90 having polarizing coatings 92, 94 on opposite sides and respectively constituting the right and left images of stereoscopic pairs. The axes 16, 26 of the two polarizing layers are perpendicular to one another, and the superposed images may be projected by an ordinary projector 60, 64 on to a translucent or opaque non-depolarizing screen 70, and be viewed through analyzing spectacles 80. The film images may be viewed directly, may be in superimposed coatings, both on the same side of an opaque or transparent base or unsupported by a base, and may be unrelated or "still" images. The Specification as open to inspection under Sect. 91 describes also the formation of layers by depositing polarizing material from a printing surface. This subject-matter does not appear in the Specification as accepted.
Patent GB-574608-A (GB)
Title: Self lubricating valve
IPC: F16K5/22
Filed: 1943-08-16
Abstract: 574,608. Valves. WADDELL, H. J. Aug. 16, 1943, No. 13297. [Class 135] [Also in Group XXXIV] A valve plug 6 has a threaded extension 16 screwed into a piston 14 disposed in a lubricant chamber 5 and prevented from rotating so that it moves either up or down when the plug is turned, the arrangement being such that when the piston moves upwardly the wedgeshaped plates 13 move likewise into firm engagement with the wall of the valve socket. The piston also effects a circulation of lubricant from the upper end of the chamber 5 through longitudinal grooves 23, Fig. 2, in the wall of the socket to an annular groove 24 in the upper part of the plug, and thence down the longitudinal grooves 25 in the plug. From the grooves 25 a part of the lubricant flows into channels 25a formed in the opposed faces of the wedge-shaped plates 13 and the plug 6, while the remainder flows through transverse holes in the plug into the bore 26, and thence to the lower end of the chamber 5.
Patent GB-1414834-A (GB)
Title: Polymerization of 2-pyrrolidone
IPC: C08G69/24
Filed: 1973-03-20
Abstract: 1414834 2-Pyrrolidone polymers S F PUSZTASZERI 20 March 1973 [22 March 1972] 13347/73 Heading C3R Substantially pure anhydrous 2-pyrrolidone is polymerized by (1) mixing the 2-pyrrolidone with a substantially anhydrous alkaline reactant selected from alkali metals, alkali metal hydroxides and alkali metal bicarbonates in a mole ratio of 10-27 : 1 and heating the mixture under vacuum to a temperature of from 100-120‹ C. to react the alkaline reactant with the 2-pyrrolidone to form a salt and water, the latter being removed by distillation (2) cooling the reaction mixture and bubbling a dry gaseous polymerization activator through the solution, at less than 48‹ C., the amount of gaseous polymerization activator being sufficient to react substantially all of the alkali metal in the 2-pyrrolidone salt, (3) adding a drying agent to the mixture, just prior to polymerization in an amount of from 1% to about 5% by weight, based on the weight of the mixture to be polymerized and (4) polymerizing the mixture at from 48‹ to 52‹ C.
Patent GB-1498055-A (GB)
Title: Automatic telephone dialling apparatus
IPC: H04M1/274
Filed: 1975-04-01
Abstract: 1498055 Autodiallers D VENDRAMINI 1 April 1975 [29 March 1974] 13375/75 Heading H4K An impulsing autodialler is adapted to mechanically read an insertable card carrying two tracks and comprises two feelers one of which reads one track and in accordance with the information thereon alternately enables and prevents cooperation between the other feeler and the other track. As described the first track comprises depressions of lengths proportional to the digits to be dialled and is read by a tooth (not shown) on the free end of a feeler (Fig, 9) privoted at 87 on a support 86. A tab on this feeler projects through a slot 101 in a second feeler 104 pivoted at 106 on a support 105. A tension spring 108 joining the two feelers biases the tab 84 to the bottom of the slot. In operation a card 21 (Fig. 7) is inserted through a slot in the casing 53 and pushes a carriage 60 along rails 64 until the carriage engages one end 69 of a U-shaped frame withdrawing a lug 78 from engagement with the tab 84 allowing the first feeler to engage the first track. The carriage returns at a uniform rate under the action of a return spring and each time the tooth on the first feeler enters a depression on the first track, a tooth 124 on the second feeler engages the second track which is a continuous sawtooth rack causing the toothed end of the second feeler to be depressed against the action of the spring 108 a number of times corresponding to the length of the depression. A lug 111 on the second feeler opens impulsing contacts 112 on the first feeler a corresponding number of times. When the carriage is fully returned it engages the other end of the U-shaped frame withdrawing both feelers from their sensing position until a card to be read is again fully inserted. To allow for halts between selected digits for the reception of further dial tone a third feeler reads a third track and locks in any depressions thereon causing a halt until released by the user depressing a button carried by the third feeler.
Patent GB-212460-A (GB)
Title: Improvements in and relating to hinges
IPC: E05D3/02
Filed: 1923-05-22
Abstract: 212,460. Spence, J. T. May 22, 1923. Barrel hinges have a compression spring 4 housed in the aligned socket members 1<a>, 2<a> of the flap members 1, 2 respectively, a liner 3 and a securing bolt 5 being also provided. The spring is used to serve as a means acting to push the socket members apart axially and thereby to lessen the wear on the engaging surfaces of the socket members. The bolt 5 has a squared neck 5a to prevent its rotary movement in the socket 1<a>. Grease may be used in the socket members.
Patent GB-194978-A (GB)
Title: Improvements in gas-masks
IPC: A62B18/08
Filed: 1922-05-12
Abstract: 194,978. Davis, R. H., and Rosling, C. G. May 12, 1922. Respirators. - In gas masks wherein the inspired air is passed over the eyepieces to prevent the deposit of moisture thereon, " dead space" in the mask is minimized by placing the air-distributing duct on the outside. From a metal fitting d which carries the expiratory valve d' and inlet pipe d<1>, a tube e is led to a point situated between the eyepieces c. A tubular extension g on the mask receives the end of the tube, which is preferably flared and is closed except for the air outlets h which direct the air on to the eyepieces.
Patent GB-777434-A (GB)
Title: Improvements in or relating to mountings for bodies on vehicle chassis frames
IPC: B60P3/22
Filed: 1954-05-10
Abstract: 777,434. Tank vehicles. MICKLEOVER TRANSPORT Ltd., TAYLOR, J. A., and TURNER, A. J. M. May 3, 1955 [May 10, 1954], No. 13552/54. Class 108(1). A tank vehicle body is encircled forwardly and rearwardly by reinforcing rings 12 welded thereto and is mounted forwardly on bonded rubber to metal ionical bushes, whilst at its rear end it is supported on each side by pairs of links 21 pivoted to the rings and to the chassis so as to allow oscillation of the rear end of the body about an instantaneous centre below the chassis. Specification 777,433 is referred to.
Patent GB-739767-A (GB)
Title: Improvements in or relating to television pick-up tubes
IPC: H01J31/26
Filed: 1954-05-10
Abstract: 739,767. Television pick-up tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 10, 1954 [May 13, 1953], No. 13565/54. Class 39 (1). A television pick-up tube with light-spot scanning has a transparent target electrode in the optical path of the scanning spot. The spot 8 scans the photo-cathode 6 generating a scanning beam 13 of electrons which are focused on to the target 1, which carries a charge image formed by photo-electrons from the photo-cathode and corresponding to the object 10. The target is of mica or other insulator with a backing of transparent conductor or a grid. The accelerating electrode is either a wall coating or one or more cylindrical electrodes, and the focus coil may be short if magnification is required.
Patent GB-184849-A (GB)
Title: Improvements in wiring systems for electric light and power installations
IPC: H02G3/00
Filed: 1921-05-13
Abstract: 184,849. Lepine, L. J. May 13, 1921. Junction boxes; binding-posts and terminals. -The junction-box m, preferably cylindrical, is made of non-metallic insulating-material such as vulcanized rubber or rubber and fibre and is provided with internal caps n, which serve to clamp the wires. The inner cap screws on the boss p and the stem q of the outer cap screws into a hole in the inner cap. Metal contact-plates may be used with the caps to form the electrical connections. The box is provided with an airtight cover t, which makes it impossible for sufficient air to remain within the box to allow the material to burn through sparking! at the connections.
Patent GB-1078800-A (GB)
Title: Improvements in or relating to a device for measuring the length of footwear
IPC: A43D1/06
Filed: 1966-03-28
Abstract: 1,078,800. Measuring feet and footwear. M. KROGER. March 28, 1966, No. 13577/66. Heading G1X. A device for measuring both footwear and feet comprises an L-shaped block having a tunnel 4 slidable in the two arms 1, 2 thereof, and an elongate graduated flexible member 5 passing through the tunnel, the inner surface of the arm 1 having thereon a rubber pad adapted to support the heel of a foot, the heel abutting against the inside of the arm 2, and the outside of the arm 2 being arranged to abut against the inside of the heel of an item of footwear. Thus a foot can be measured by placing it on the device and suitably adjusting the member 5 by means of a handle 6. Similarly the provision of an abutment member 7 enables the device to be used to measure the length inside an item of footwear. The thickness of the arm 2 is made equal to the desired difference in length between a shoe and a foot on which it is to be worn. Readings are taken at the upper end of the arm 2, and the block and/or member 5 may be made of metal or a plastics material.
Patent GB-700592-A (GB)
Title: Control for beam guidance system
IPC: G05D1/06
Filed: 1952-05-28
Abstract: 700,592. Radio navigation. BENDIX AVIATION CORPORATION. May 28, 1952 [June 26, 1951], No. 13590/52. Class 40 (7) A radio beacon aircraft landing system comprises a ground transmitter providing a radio beam defining a glide path, a receiver on the craft capable of generating craft control signals from the beam signals and means associated therewith for automatically rendering effective the craft control signals when the beam signal strength is above a predetermined minimum. Further means may be also provided ensuring that the control signals are only made effective when their amplitude is below a predetermined maximum. The system ensures that landing control signals are not fed to an automatic pilot or cross-pointer indicator until the craft is correctly placed to make a safe landing. In an embodiment two craft receivers 1 and 3 respectively receive localizer and glide-path beam signals and generate craft control voltages V and also voltages V<SP>1</SP> representative of the magnitudes of received signals. These voltages are displayed on visual indicator 7, 9, 11 and 13. The control voltages V are also fed through amplifiers and isolating circuits to the appropriate input channels of automatic pilot 20. These inputs may be cancelled by shorting them by means of the contacts of relays 21 and 23 which are normally closed but which may be opened by the operation of relays 47 and 51 and 41, 48, 52 and 56 respectively. Relay 47 closes when the localizer control signal falls below a certain value and relay 49 closes when the V' output of the receiver 1 is above a certain value. Thus with adequate localizer strength and an error signal which is not excessive the automatic pilot is fed with localizer signals. The circuit of relay 41 is such that this relay is closed when localizer signals are fed to pilot 20, relay 48 is closed when the glide path control signals are below a certain level, relay 52 is closed when the V<SP>1</SP> output of receiver 3 is above a certain level, and relay 56 is closed by the action of putting the receivers into operation. Thus when localizer control is effective, adequate glide-path signals are received and the craft is not so far off the glide-path that the error signals are excessive, glide-path control circuits are also fed to the automatic pilot. The circuits of relays 51 and 52 include long time constant circuits to prevent the relays releasing due to the temporary fading of signals. Specifications 647,961, [Group XXXIX], and 675,751 are referred to.
Patent GB-246711-A (GB)
Title: Improvements in and relating to spring suspension for vehicles
IPC: B60G11/04
Filed: 1925-05-25
Abstract: 246,711. Imray, O. Y., (International Motor Co.). May 25, 1925. Drawings to Specification. Springs, arrangement of.-A spring suspension for a motor vehicle comprises a pair of semielliptic springs arranged between an axle and the chassis frame, the spring at one side of the frame being rigidly secured on the axle while the spring on the other side is mounted to rotate on the axle. Torsional strains on the axle due to unequal deflection of the springs are thus avoided whle the fixed spring takes the torque reaction. When applied to both axles of a vehicle, the rotary connections on the front and rear axles are at opposite sides of the frame.
Patent GB-143539-A (GB)
Title: Emergency umbrella
IPC: A45B13/00
Filed: 1920-05-18
Abstract: 143,539. Berman, G. S. Feb. 12, 1919, [Convention date]. Ribless collapsible umbrellas; covers. - An emergency umbrella is made with a pleated cover 5, Fig. 2, of stiff waterproof paper, permanently attached to a stick 1 and supported by stretchers 4 hinged to a runner 20 and connected by fastenings 8 to the upper folds 12 of the cover. The cover is attached to the end of the stick by means of a tack 3 having a concave head with a sharp periphery for clamping the cover against the stick. The fastenings 8 consist of an eye 22, Fig. 9, in which the stretcher is pivoted by means of a headed end, and bendable prongs 10, 11 and a shield 9 between which the cover is clamped. Two opposite double folds of the cover are made wider than the others, and when the cover is collapsed these wider folds open out into the same plane, as shown at 6, Fig. 6, providing space for the stick 1 between the intermediate folds. The collapsed cover is in the form of a rectangular pyramid. For storage, the collapsed umbrellas can be assembled in sets of three, one reversed between the other two.
Patent GB-832263-A (GB)
Title: Improvements relating to wallets or the like
Inventor: NASH DANIEL JULIUS
IPC: A45C1/06
Filed: 1957-04-30
Abstract: 832,263. Wallets. NASH Inc. April 30, 1957; No. 13739/57. Classes 18 and 133. A wallet 10 comprises a front flap 12, a rear flap 14 and an intermediate hinge portion 16, a pair of springs 18, 18a, and means extending from the springs to engage the flaps 12 and 14; both the springs and the means extend in a linear longitudinal direction when relaxed, and when the flaps 12, 14 are brought into confrontation to close the wallet, the springs assume an arcuate stressed configuration. The means may consist of wire legs 20, 20a formed integral with the springs 18, 18a and connected by cross arms 22, 22a to reversely extending legs 24, 24a of which the free ends engage the opposite ends of the springs. A lining 28 is stitched to the flaps 12 and 14 and the hinge portion 16, enclosing the springs and means. Pockets may be affixed to the wallet, and a closure flap 34 having a fastener 36. In another form, the means may comprise a pair of U-shaped wire members whose free ends extend into the ends of the springs; a further embodiment comprises a single wire rectangle integral with the springs.
Patent GB-130808-A (GB)
Title: Improvements relating to Artificial Arms and Hands.
Inventor: PRINGLE ALEXANDER
IPC: A61F2/58
Filed: 1918-08-23
Abstract: 130,808. Pringle, A., and Kirk, T. S. Aug. 23, 1918. Limbs, artificial.-The arm socket for an artificial limb is provided with mechanism so that, when a wire or cable is operated to close the hand. the socket itself is tightened on the limb. In the form shown in Fig. 1, the edges of the socket a are fitted with plates c, d each having two slots c', c<1>, d<1>, d<1> inclined oppositely. Pins b<1>, projecting from studs b loose on the inner member f<2> of a Bowden wire at a portion where the outer casing is cut away, each pass through a slot on either plate so that, when the wire is pulled to cause the hand to grip, the studs b approach one another and tighten the socket on the limb. The studs bear against the ends of the wire casing, and a spring s surrounding the inner wire normally keeps the studs apart. In a second form, the studs b are pivoted to two pairs of togglelinks. In a third form, the studs are directly attached to the edges of the socket.
Patent GB-528489-A (GB)
Title: Improvements in and relating to grinding machines, more for grinding gears
IPC: B23Q11/08
Filed: 1939-05-08
Abstract: 528,489. Grinding-machines. SOC. ANON. DE RECTIFICATION ET D'ENGRENAGES PROCEDES MINERVA. May 8, 1939, No. 13757. Convention date, May 13, 1938. [Class 60] A grinding-machine described as for grinding gear teeth, has frame members fitted to the main frame and so formed that with other main frame elements it forms a closed housing for working parts of the machine, whereby abrasive dust and water are excluded. The machine comprises a base 6 on which slides a carriage 4 having thereon an index mechanism 2 with a bearing 3 for the work spindle 15. The machine also comprises a column 7 on which is mounted a grinding-wheel carriage 8, and between the base 6 and the column 7 is a housing comprising a frame member 9 and a front frame member 10 with a horizontal extension 11 having a bent down part 12, the housing being closed by the base and the column and by side frame members. The bearing 3, which is slidable through the member 10 is provided with a stuffing box, the packing 18 of which may bear on a cap 17, Fig. 3, attached to the spindle 15. For work requiring to be mounted between centres, a tailstock 21 may be provided, carried by bars 19, 20 passing through stuffing boxes in the wall 12 and fixed to or removably carried by the carriage 4. The top of the carriage and the extension 11 may be curved at 22, 23 to accommodate work of as large a diameter as possible. Inspection holes, fitted with removable covers may be provided in the walls of the housing.
Patent GB-235381-A (GB)
Title: Improvements in the manufacture of paints, varnishes, and coating compositions and the like
IPC: C09D107/00
Filed: 1924-06-05
Abstract: A composition for spreading on roads, footways, &c. comprises "adapted" liquid rubber, tar or fuel oil or both, with or without pitch or sulphur or both.  The liquid rubber is obtained as described in Specification 235,380, [Class 32, Distilling &c.], and is "adapted" by subjecting it while liquid to the oxidizing action of air, as by stirring or blowing air through it.