baber/WOPTO huggingface dataset:
Patent GB-1068278-A (GB)
Title: Railroad car retarder system
Inventor: WILSON ROSSER LONG
IPC: B61K7/08
Filed: 1965-11-02
Abstract: 1,068,278. Track brakes. AMERICAN BRAKE SHOE CO. Nov. 2, 1965, No. 46369/65. Heading F2E. In a rail car retarder of the type in which at least one of the traffic rails 11 is vertically movable and two series of levers 25 arranged on opposite sides of the traffic rail are pivotally mounted and interconnect the traffic rail with a pair of wheel engaging members, e.g. rails 15, so that entry of a wheel 16 into the retarder forces apart the members 15 to cause the levers to raise the traffic rail whereby the weight of the car acts on the members 15 to provide a retarding force in proportion to car weight, the respective series of levers are pivoted on eccentric portions 26 of rock-shafts 27 which extend between and are supported by wearing surfaces 70 on a pair of adjacent ties (or sleepers) which normally support both traffic rails, a piston-and-cylinder unit 60 being provided to rotate the rook-shafts via levers 63, 68 to cause movement of the pivot axes of the series of levers from the positions shown to positions in which the retarder is ineffective (Fig. 5, not shown). Each lever is provided with two apertures 28, 28a in either of which the portion 26 can be engaged according to whether a high or low mechanical advantage is required. Each aperture has an associated arcuate stop-member 76 which, together with an arcuate stop-member 75 carried by the associated rock-shaft 27, limits the rotation of the latter. The levers are made captive with the traffic rail 11 by being provided with cradle portions 45, each including a hump 46 supporting the rail and a flange 49 overlying the lower flange of rail 11 at the side thereof opposite to the associated rock-shaft. Each retarder rail 15 is adjustable for wear by adjustment of wedges 35 which are arranged between each rail 15 and the associated series of levers and which take the braking thrust, the adjustment being locked by bolts 32 and nuts 33. In the embodiment shown only one traffic rail 11 is equipped with a retarder, so that by fitting tie-bars of the form disclosed in either Fig. 8 or Fig. 9 (not shown), between the other, fixed, traffic rail and the vertically movable one the track gauge is maintained. Alternatively (Figs. 17, 18, not shown), the vertically movable traffic rail (11) may be guided by members (160) secured to the ties (10). In the embodiment of Figs. 1-7 (described above with reference to Fig. 4 only) each pair of levers 25 is associated with a separate pair of rock shafts, but in a second embodiment (Figs. 10-16, not shown) two pairs of levers (105) are associated with each pair of rock shafts (102), the latter being of a more robust construction, being formed from an I beam (125), (126), (127) (Figs. 14-16, not shown), and including eccentric portions (116). Also, the levers (105) are castings having a thickened edge portion (113). Either a single-acting piston- and-cylinder unit (101) (Fig. 11, not shown) or a double-acting unit (170) (Fig. 19, not shown) may be used for rotating the rock shafts.
Patent GB-1128360-A (GB)
Title: Clutch facing
IPC: F16D69/02
Filed: 1966-10-19
Abstract: 1,128,360. Friction clutches. RAYBESTOSMANHATTAN Inc. 19 Oct., 1966 [21 Oct., 1965], No. 46724/66. Heading F2C. A motor vehicle clutch friction facing comprises a spirally wound multi-ply strip having at least one ply 11 consisting of a woven fabric reinforced with fine metal wires, e.g. of brass, copper, zinc, lead, in at least some of the strands thereof, and a plurality of reinforcing plies 13 of thin, flexible, consolidated and condensed, dry carded spinning grade asbestos fibre web material of relatively high porosity, the fibres being interlocked with each other, said strip being impregnated with a cement comprising heat-hardenable-resin and friction material filler, and said facing being compressed to consolidate the convolutions and heat-treated to harden said cement. There are at least four reinforcing plies 13 to one ply 11. The plies 11, 13 may be folded into W or arcuate shape or, as shown, internesting chevron cross-section, or may be flat. The woven fabric ply 11 may be woven of yarn of asbestos fibre alone or with, e.g. cotton, wool, rayon, linen or jute. In a preferred form, where the warp and weft is asbestos, the metal reinforcing wires are in the warp and, if desired, also in the weft. The Specification includes examples and proportions of resins and friction material organic or inorganic fillers for the cement with which the woven fabric is impregnated, and of natural and synthetic rubber, rubber being preferably also included in the cement. Impregnation may be by passing the fabric through a cement solution and removing excess, as by squeeze rolls. The impregnated fabric is then heated to remove solvents without curing the resin. The Specification also includes examples and proportions of fibres and asbestos fibre/natural and synthetic carrier fibre mixtures for the asbestos web of the reinforcing plies 13, and of glass yarns for an open mesh woven glass fabric reinforcement 16 preferably included in the asbestos web. Such reinforcement may be accomplished by passing asbestos web and glass fabric through rolls causing the asbestos fibres to fill the glass fabric meshes and interlock with one another and with the glass fabric. Preferably the glass fabric is sandwiched between asbestos webs applied to each side. The asbestos web material, glass fibre reinforced or not, may be sized, e.g. by starch, the sizing being so controlled that the web is left in a porous condition. The cement for the reinforcing plies 13 is that used for the ply 11, and impregnation may be similarly effected. Dried plies 11 and 13 are combined into a sheet which is wound convolutely and cut into a plurality of coiled annuli of desired thickness. Each annulus is then subjected to heat and pressure, e.g. in a mould for densifying, to cause the cement to flow and permeate, to consolidate the convolutions, and to harden the resin binder and, if present, rubber. The resulting clutch facing is then finished, e.g. by surface grinding. Countersunk facing-attachment rivet holes (14) may be formed during moulding or by subsequent drilling.
Patent GB-1444176-A (GB)
Title: Isotopically enriched helium - 4
IPC: F25J3/08
Filed: 1973-10-09
Abstract: 1444176 Isotopically enriched helium L GARWIN 9 Oct 1973 [17 Nov 1972] 46995/73 Heading C1A [Also in Division F4] Helium suitable for use as a nuclear reactor coolant is isotopically enriched in helium-4 wherein helium-3 content is below 0À16 p.p.m. preferably below 0À01 p.p.m. In an embodiment natural gas or air is fed to a helium extraction unit 12 wherein a portion of the helium content of the gases is removed as crude helium 13 containing small amounts of nitrogen and neon. The crude helium is passed through purification unit 15 of a conventional type and the natural source helium is then passed to a liquefaction unit 18 wherein the temperature is reduced to 4‹ to 5‹ K. and the pressure reduced to about one atmosphere. The liquefied helium, which contains less than one p.p.m. impurities, is then passed to the helium-3 removal unit 21. The unit 21 may be in the form of a column containing within it a plurality of contacting trays, liquid helium being fed into the top of the column. Liquid flowing downwardly is met by an upward flowing countercurrent stream of vapour generated by introducing a controlled amount of heat into a liquid helium pool at the bottom of the column. The rising vapour preferentially removes helium-3 from the downflowing liquid and the helium which is isotropically enriched in helium-4 is removed from the bottom of the column. In another embodiment the removal unit 21 is adapted for use on a batch basis wherein the liquefied natural helium is charged to the bottom of the unit 21 which is in the form of a still containing packing. The helium is refluxed, the vapour being generated being enriched in the helium-3. The removal unit 21 operates at a temperature of between 3‹ and 5À2‹ K., preferably 3À324‹ K. and 5À0‹ K. and a pressure of between 185 and 1700 mm., preferably 300 to 1500 mm.
Patent GB-1272778-A (GB)
Title: Removing volatile constituents from particulate olefin polymers produced by gas-phase polymerization
IPC: C08F6/28
Filed: 1969-09-25
Abstract: 1,272,778. Purifying polyolefins. BADISCHE ANILIN. & SODA. FABRIK A.G. 25 Sept., 1969 [26 Sept., 1968], No. 47150/69. Heading C3P. Volatile constituents are removed from particulate polyolefins prepared by gas phase polymerization by treating a layer of particles of the polymer of particle size 10 to 5000 microns with a stream of inert gas at a temperature of 80‹ C. to at least 5‹ C. below the crystallite melting point of the polymer while in vigorous motion. Specified polymers are of ethylene, propylene and/or butene-1. Specified gases are nitrogen, carbon dioxide and steam. The process is said also to improve the free-flowing properties and increase the bulk density of the polymer. Apparatus for carrying out the process is described and illustrated, and examples describe the treatment of (1) polypropylene, (2) polyethylene and (3) ethylene/butene-1 copolymer with streams of nitrogen.
Patent GB-1435120-A (GB)
Title: Reforming process and catalyst
IPC: B01J37/08
Filed: 1973-10-09
Abstract: 1435120 Alumina CHEVRON RESEARCH CO 9 Oct 1973 [27 Oct 1972] 47163/73 Heading-C1A [Also in Divisions B1 and C5] An alumina used as a support in a reforming catalyst comprising platinum, palladium or indium (see Divisions B1 and C5) has a surface area of 140-240 m.<SP>2</SP>/g. and is formed by calcination of the alumina obtained by removing water from aluminium hydroxide produced as a by-product from a Ziegler higher alcohol synthesis reaction wherein aluminium is reacted first with ethylene and hydrogen to form triethyl aluminium, followed by polymerization of ethylene on to the aluminium-bonded ethyl groups and then oxidation to form an aluminium alkoxide and hydrolysis to form the required alcohols and give the aluminium hydroxide by-product. The calcination of the alumina 25 sintably effected at 1150-1350‹ F.
Patent GB-1482786-A (GB)
Title: Hinge devices
IPC: E05D5/02
Filed: 1974-10-31
Abstract: 1482786 Adjustable hinges BLUM GmbH 31 Oct 1974 [12 Dec 1973] 47232/74 Heading E2F In an adjustable hinge for use in mounting cupboard doors, a hinge arm 2 is pivotally attached at 5 to an intermediate part 4 which is located by lugs 10 carried in slots 9 in a mounting plate 3 secured to a stationary member, an adjustment screw 1 captive in the hinge arm being provided to move the hinge arm relatively to the intermediate part 4 by screwing into the intermediate post. The intermediate part is clamped in position on the mounting plate 3 by means of a fixing screw 8.
Patent GB-1090251-A (GB)
Title: Improvements in or relating to switching mechanisms
Inventor: ANDERLE VLADISLAV
IPC: H02P29/00
Filed: 1964-11-20
Abstract: 1,090,251. Rectifying. ZAVODY V. I. LENINA PLZEN, NARODNI PODNIK. Nov. 20, 1964 [Nov. 20, 1963], No. 47336/64. Heading H2F. [Also in Division G1] In apparatus for automatic control of a cyclically operated mechanism, the motor 7 driving the cyclic mechanism 8 is energized by the output signal from one of two synchro receivers 2, 3 coupled to a synchro transmitter 1 driven with the cyclic mechanism 8 by motor 7. The output signals from receivers 2, 3 are A.C. voltages 90 degrees out of phase, and are fed to motor 7 via a synchronous rectifier comprising relays 4 triggered by pulses from mechanism 8 at each 90-degree revolution, whereby only positive quarter cycles are fed to motor 7.
Patent GB-1518711-A (GB)
Title: Transport system for disc-shaped workpieces
IPC: H01L21/677
Filed: 1975-11-17
Abstract: 1518711 Pneumatic supporting and conveying of workpieces CHEMICAL REACTOR EQUIPMENT AS 17 Nov 1975 [20 Nov 1974] 47341/75 Heading B8A A conveyer for transporting workpieces, e.g. disc-shaped substrates 5 comprises a rail 6 having an air supply duct communicating with a row of inclined nozzles 16-21 extending centrally on the underside of the rail, and lateral guides 15 on the rail, the conveyer operating to support and convey the substrates 5, and one end of the rail not including side guides 15. The rail may convey substrates to or from a magazine from or to a conveyer 4.
Patent GB-1214568-A (GB)
Title: Improvements in or relating to methods of controlling the number of copies produced by a duplicator
IPC: G06M3/02
Filed: 1968-10-07
Abstract: 1,214,568. Printing apparatus. A. B. DICK CO. 7 Oct; 1968 [19 Oct., 1967], No. 47490/68. Heading B6C. A master sheet or printing plate 14 fed into duplicator or printing press 12 carries a coded number expressing the number of copies which are to be printed from it. The code is converted to an electrical signal before printing begins, and comparator 22 compares the signal, which is held in memory 20, with the output of copy counter 24. When the correct number of copies has been printed, the comparator 12 produces a signal which stops the duplicator or printing press 12. Preferably the coded number on the master sheet or printing plate 14 is expressed in binary form.
Patent GB-1464167-A (GB)
Title: Odour-masking compositions
IPC: C07C67/00
Filed: 1974-11-04
Abstract: The active component of the deodorant is 4-cyclohexyl-4-methyl-2-pentanone. The active compound is rendered effective by vaporisation in a room, e.g. in the form of an aerosol or wick vaporiser. It is effective in such a small amount as 0.01 mg/m<3> of air and can also be incorporated into solid or liquid substances, e.g. powders, gels, hair-creams, dyestuffs, chemicals, papers, textiles and liquid.
Patent GB-1486611-A (GB)
Title: High intensity discharge lamp
IPC: H01J61/34
Filed: 1974-11-05
Abstract: 1486611 Discharge lamps GENERAL ELECTRIC CO 5 Nov 1974 [5 Nov 1973] 47790/74 Heading H1D As shown in Fig. 1, a discharge lamp 1 comprises an outer viterous envelope 2, domed at the upper end and having a base 3 at the lower end, and inleads 5, 6 sealed into envelope 2 and connected to base 3; an arc tube comprising an inner ceramic envelope 9 having electrodes sealed therein, and containing ionizable vapour, a closure at one end of the inner ceramic envelope 9 including a metal member 11 (e.g. of Nb) serving as an inlead to the lower electrode, and a closure at the upper end of envelope 9 comprising a ceramic plug 17 (Fig. 2) and a slender lead wire 18 sealed therethrough; an arc tube supporting frame within envelope 2 for supporting envelope 9 and comprising a long rod 14 rigidly connected to inlead 6 and extending to the dome of envelope 2 and a short support rod 13 rigidly connected to inlead 5; the end of rod 14 near the dome being rigidly connected to one rod; a transverse support member comprising a smooth round wire 25 making a single tight loop around wire 18, and a flexible conductor 27 connecting wire 18 to the other rod. The turn 26 is not so tight around wire 18 as to prevent axial movement when thermal expansion of envelope 9 takes place. The support wire 25 and the flexible conductor 27 may be made of Nb, Zr, Ti, V, Mo, Ta, W and alloys thereof. The wire 18 and the support wire 25 may both be smooth round Nb wires. In a modification, Fig. 3 (not shown), the outer envelope 2 is inverted with respect to envelope 9.
Patent GB-1281892-A (GB)
Title: IMPROVEMENTS IN OR RELATING TO ELECTRICAL CIRCUITRY FOR USE e.g. IN FORCE BALANCE SYSTEMS
Inventor: KNIGHT PETER MICHAEL
IPC: G05D16/20
Filed: 1968-10-09
Abstract: 1281892 Automatic current control ELLIOTT BROS (LONDON) Ltd 2 Oct 1969 [9 Oct 1968] 47813/68 Heading G3R A force balance pressure transducer of the type wherein the mean D.C. current through a winding 13 bears a linear relationship to the mark/space ratio of pulse width modulated signals from a source 17, is provided with a control circuit which automatically compensates for variations in the current caused by variation in the winding characteristics, to maintain the linear relationship. As shown the current is sensed by a resistor 23 whose signal is applied to a comparator 31 together with pulse width modulated signals from a source 27 of the same mark/space ratio as the source 17, which ratio is controlled by the A.C. pick-off of the transducer, Fig. 1 (not shown). A switch 41 is controlled by the source 17 to produce voltage levels V R  or earth corresponding to the levels of the source, which also controls another switch 25 to operate synchronously with the switch 41 and connect the winding 13 to earth or to the output voltage V of a circuit 21. The latter circuit comprises an integrator 35 receiving the output of comparator 31 and supplying a summing point 39 which is also fed with a datum voltage V M , although if desired the voltage source 37 and point 39 may be omitted. The time constant of the circuit 21 is chosen in relation to the cycle time of the pulse width modulated signals so that variations in the characteristics of the winding 13, for example changes in its resistance and inductance due to temperature changes, produce a change in the voltage V to maintain the linear relationship between current and mark/space ratio. The Specification gives a theoretical analysis of the circuit to show that the winding current is proportional to, and the voltage V is independent of, the mark/ space ratio. The source 17 comprises a demodulator receiving the A.C. pick-off error signal from the transducer and controlling a threshold circuit connected to a conventional arrangement of gates, flip-flop, counter, register, logic circuit, pulse generator and clock pulse source, Figs.3 and 4 (not shown).
Patent GB-1248935-A (GB)
Title: Vinyl ethers of aromatic hydroxy compounds and a process for production of the same
Inventor: LEVCHENKO ANDREI IVANOVICH
IPC: C08F16/12
Filed: 1968-10-11
Abstract: 1,248,935. Polymers of aromatic ethers. UKRAINSKY ZAOCHNY POLITEKHNICHESKY INSTITUT. 11 Oct., 1968, No. 48299/68. Heading C3P. [Also in Divisions C2 and C4] Polymeric materials are obtained by polymerizing unsaturated monomers of the Formula I: where n=1 and Ar is an acenaphthyl, fluorenyl, pyrenyl, phenanthryl or anthryl-2 radical or n= 2 and Ar is an acenaphthyl, fluorenyl, phenanthryl, anthryl, pyrenyl or naphthyl radical or by polymerizing monomers of Formula II: where Ar is a phenyl, naphthyl, anthryl, acenaphthyl, fluorenyl, phenanthryl or pyrenyl radical.
Patent GB-1384717-A (GB)
Title: Outer peripheral suspension members for loudspeakers
IPC: H04R31/00
Filed: 1972-05-30
Abstract: 1384717 Loud-speaker diaphragms MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd and SEKISUI KAGAKU KOGYO KK 30 May 1972 [5 July 1971] 48376/73 Divided out of 1384716 Heading H4J An annular outer peripheral suspension member 22 (Fig. 1) for a loud-speaker cone 20 is formed of foamed plastics having a closed cellular structure. The foamed plastics may be an ethylene-vinyl acetate copolymer or a mixture of polyethylene and an ethylene-vinyl acetate copolymer. Preferred percentages by weight of materials are given. Either a decomposing blowing agent such as azodicarbonamide or a volatile blowing agent such as dichlorodifluoromethane is used. Cross-linked bonds are preferably formed by addition of an organic peroxide, e.g. dicumenyl peroxide, or by irradiation with electron beams or ionizing radiations before the copolymer or the mixture of copolymer and polyethylene is subjected to the foaming process. The suspension member has an annularly raised portion (see also, Fig. 2, not shown) and is formed by heating and pressing a foamed sheet to the required shape.
Patent GB-1151258-A (GB)
Title: Improvements in or relating to Two Directional Self Energising Disc Brakes
Inventor: TARLTON FRANK HENRY
IPC: F16D65/14
Filed: 1967-10-25
Abstract: 1,151,258. Disc brakes. ROLLS ROYCE Ltd. 25 Oct., 1967, No. 48430/67. Heading F2E. At least one shoe 12, Fig. 2, is mounted on part 11 of a disc brake caliper assembly by means of pins 14, 15 in the shoe which locate in oversize recesses 16, 17, in the caliper part 11, whereby self-energizing action is obtained when the shoe contacts the disc 10 by virtue of the shoe being dragged by the disc until one pin 14 engages the edge of one recess 16 (for right to left disc rotation) and the shoe thereafter tends to pivot about the point of contact, the pivoting axis thus being parallel to the disc plane and displaced in the direction of rotation from the point of contact between the disc and shoe. For opposite rotation (Fig. 3, not shown), the other pin (15) and recess (17) engage. The brake may be mechanically operated via a pivoted lever (25, Fig. 4, not shown), or hydraulically operated, and may be a hand or main brake.
Patent GB-1367496-A (GB)
Title: Method of manufacturing and treating iron ore concentrate agglomerate s
IPC: C22B1/243
Filed: 1971-10-19
Abstract: 1367496 Ore agglomerates AB COLDBOUND PELLETS 19 Oct 1971 [19 Oct 1970] 48517/71 Heading C1A Agglomerates of Fe ore concentrates are produced by mixing the ore concentrate with an additive material which contains at least one of MnO, Al2O3, and TiO2 (or compounds convertible to such at 800-1100‹ C.) and a hardenable binding agent, forming agglomerates from the mixture, and hardening the binder. The additive material is preferably produced by grinding the ingredients together with iron oxide material (e.g. magnetite or wustite), which may contain the MnO &c. in solid soultion, in a vibratory mill, as described in Specification 1,367,495. Hydratable constituents may be slaked during grinding or storage of the additive. Hardening is effected (a) with CO2 using Ca(OH)2 as binder, (b) by allowing to set, e.g. at room temperature using cement or blast furnace slag as binder, or, preferably (c) by steam autoclaving, e.g. at 160-230‹ C. and 10-70 atmospheres pressure using a steam hardenable binder, e.g. Ca(OH)2, slag, or cement ŒSiO2. The agglomerates may be coated with Mg(OH)2 before hardening.
Patent GB-1048600-A (GB)
Title: Sigmoidoscope and illuminating means therefor
IPC: A61B19/00
Filed: 1964-12-01
Abstract: 1,048,600. Illuminating and viewing cavities. SMITH KLINE & FRENCH LABORATORIES. Dec. 1, 1964 [Jan. 22, 1964], No. 48883/64. Heading G2J. [Also in Division A5] In a sigmoidoscope comprising a barrel 14 for insertion into a body cavity, a hand guard 17, and an eyepiece 13, a battery housing 22 is releasably fitted to the barrel and an elongate member 23 carrying a lamp 24 is releasably attached to the housing so that the member extends down inside the barrel, a disposable sterile covering 28 being fitted over the member and secured by end tabs 30, 31 to the housing. The instrument is of a specified plastics material and includes a nipple 18 for extracting air. The eyepiece 13 is removably secured by a stud and slot connection to the barrel and the eyepiece and lens may be integral and disposable.
Patent GB-1334685-A (GB)
Title: Process for colophony for dental use
IPC: A61K6/00
Filed: 1970-10-14
Abstract: 1334685 Dental powder LABORATOIRE SPAD 14 Oct 1970 [20 Nov 1969] 48892/70 Heading C3N [Also in Division C4] Colophony, which has been modified by subjecting a mixture of colophony, zinc oxide and/or lead oxide and 1-5% wt. based on the colophony of trioxymethylene to an elevated temperature in the presence of air, can be used in making pastes with eugenol which set in less than 10 minutes, for use in filling root ducts of teeth. At least one of hydrated Al 2 O 3 , calcined Al 2 O 3  and barium sulphate may be added to the mixture prior to the modification treatment. Preferred mixtures comprise 25-50% wt. lead oxide or 100-400% wt. zinc oxide. Another preferred mixture which is subjected to the modification treatment comprises 10-15 g. hydrated Al 2 O 3 ; 4-8 g. calcined Al 2 O 3  ; 50- 60 g. ZnO; 4-8 g. red lead oxide; 15-30 g. colophony, and at least 0À2 g. trioxymethylene up to 5% wt. based on the colophony.