baber/WOPTO huggingface dataset:
Patent GB-948620-A (GB)
Title: Improvements in polymerisation and catalyst therefor
IPC: C08F4/64
Filed: 1960-02-03
Abstract: An anhydrous titanium-containing composition in which more than 50 wt. per cent of the titanium is in the trivalent state is made by heating a mixture of TiCl4, an organic solvent therefore and metallic aluminium until the reaction is complete and thereafter cooling to cause separation of the composition.  In Examples 1 and 2, the solvent is kerosene or mineral spirits and block homogeneous crystals were obtained in which the Ti values were essentially trivalent, the product being characterized by an X-ray diffraction pattern.ALSO:A polymerization catalyst system for ethylenically unsaturated monomers is prepared by forming an anhydrous titanium-containing composition in which more than 50 wt. per cent of the titanium is in the trivalent state by heating a mixture of TiCl4, or organic solvent therefor and A1 until the ensuing reaction is substantially complete and cooling to cause separation of said composition, the latter then being mixed with one or more organo-compounds of A1 or of a metal of Groups IA, IIB, IIIB, Specified ethylenically unsaturated hydrocarbon monomers which may also be copolymerized are ethylene, propylene, butene-1, pentene-1 and 4-methylpentene-1.  In examples, propylene is polymerised with said catalyst system the organo metallic compound being aluminium tri-methyl, -ethyl or i-butyl, lithium n-butyl, sodium n-or i-aryl, or cadmium diphenyl (optionally mixed with cadmium diethyl); 4-methylpentene-1 is polymerized, the organometallic compound being isobutyl aluminium.
Patent GB-378792-A (GB)
Title: Improvements in or relating to audio frequency distribution systems
IPC: H04H20/83
Filed: 1932-02-10
Abstract: 378,792. Distributing music &c. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London. -(Assignees of Quinby, E. J.; 17, Longmeadow Road, Yonkers, New York, and Hopkins, A. R. ; 4742, Browning Road, Merchantville, New Jersey, both in U.S.A.) Feb. 10, 1932, No. 3998. Convention date, March 20, 1931. [Class 40 (iv).] Each programme channel AFC at the distributing station is provided with a manuallycontrolled switch 1 and visual condition indicator 2<1>. The programmes are received by selective units RFA which may be coupled to a wireless aerial A and are passed to the channels AFC through low-frequency amplifiers AF. The channels AFC are connected to the subscriber's loud-speakers or other apparatus by channels UM, the subscriber being provided with means for switching in any desired channel UM. Each channel is also connected through a transformer 5 to a neon lamp 21 or other visual indicator, which lights as long as transmission is proceeding satisfactorily. These indicators may be mounted on a single panel near the switches 1.
Patent GB-833701-A (GB)
Title: A process for the manufacture of electrolytic manganese dioxide
IPC: C25B1/21
Filed: 1957-02-06
Abstract: 833,701. Electrolytic production of manganese dioxides. CARTOUCHERIE FRANCAISE S.A. Feb. 6, 1957 [Feb. 9, 1956], No. 4159/57. Class 41. In the production of manganese dioxide using a two-compartment cell having a porous partition 4 with continuous circulation of electrolyte from the anode compartment 3 via a saturated tank 10 to the cathode compartment 2, the electrolyte consists of manganese sulphate, sulphuric acid, and an oxido-reducer material which is at least partially reduced by contact with the cathode 7 and is re-oxidized by pyrolusite, and pyrolusite is added to the electrolyte in the saturation tank. Typically the oxido-reducer material is a mixture of ferrous and ferric sulphates and the pyrolusite 11 is added in the tank 10 at such a rate that the said material is re-oxidized to its maximum extent. A stirrer 13 is provided in the tank 10 and the pump 14 returns the treated electrolyte via a filter 16 to the anode compartment. The anode 5 and cathode 7 may be of lead, silver-lead alloy, or graphite. French Specification 1,112,567 is referred to.
Patent GB-1385801-A (GB)
Title: Thermally responsive valve assembly
IPC: G05D23/02
Filed: 1972-01-28
Abstract: 1385801 Carburetters; idling VERNAY LABORATORIES Inc 28 Jan 1972 [8 April 1971] 4221/72 Heading F1 [Also in Division F2] A thermally responsive valve closure member assembly comprises a unitary rod-like core member 20 received with clearance within the bore of a valve shell member 14, the coefficient of linear thermal expansion of one of the members being substantially greater than that of the other, one end of the core member being fixed adjacent one end of the shell member and the opposite end of the core member protruding out of the shell member to control a port flow area in response to temperature variations. The casing or core may be of polyvinylidene fluoride, polyethylene acrylics, acetal resins, nylon or steel. Reference has been directed by the Comptroller to Specification 1293709
Patent GB-973683-A (GB)
Title: Electrophotographic material
IPC: G03G5/10
Filed: 1963-02-01
Abstract: 973,683. Electrophotographic materials. KALLE A.G. Feb. 1, 1963 [Feb. 8, 1962], No. 4317/63. Heading H1K. [Also in Division G2] The conductive support of an electrophotographic material has a surface in contact with the photoconductive layer roughened so that it has a multiplicity of fine points which project through the photoconductive layer or terminate flush with the surface thereof not in contact with the support. This construction ensures adequate " fill-in " of large image areas. The support may consist of metal foils or plates made of, for example, aluminium, zinc, magnesium, or copper, or may consist of paper or plastic foils laminated to or vapour deposited with these metals. Conductive supports, not necessarily metallic, may have their peaks constituted by material extraneous to the support proper and made of a resin containing aluminium or copper powder, a metal oxide such as copper oxide, salts such as sodium nitrate or sodium sulphate, graphite, or aromatic acids (carboxylic or sulphonic) or salts thereof. Metallic surfaces may be roughened mechanically such as by brushing with a steel brush or by stamping using a fine screen, chemically by etching through a screenlike mesh formed from photo-polymerizable material, or by known electrochemical methods. The nature of the photoconductor is not critical; inorganic, organic, or mixtures of photoconductors are suitable. Mentioned are zinc oxide, zinc sulphide, selenium, and organic compounds of the oxadiazole, imidazole, triazole, oxazole, thiazole, imidazolone, and triaryl methane types. The photoconductive layer may contain any desired additives such as sensitizers, activators, binders, and pigments. The specific examples are:-(a) 2: 5-bis-(4<SP>1</SP>- di - ethylamino-phenyl - 1<SP>1</SP>) - 1: 3: 4 - oxadiazole in a styrene interpolymer containing carbonyl groups and sensitized with Rhodamine B Extra, the support being of brushed aluminium foil; (b) zinc oxide sensitized with Rhodamine B. Extra dispersed in a silicone resin and applied to a superficially brushed aluminium foil laminated to paper; (c) the photoconductive composition of (a) applied to a zinc plate which has been chemically etched through a resinous mask (details given); and (d) the photoconductive composition of (a) supported on a paper foil provided with a precoat of large aluminium particles applied in an ammoniacal aqueous dispersion of butyl acrylate.
Patent GB-1003334-A (GB)
Title: Improvements in and relating to fasteners
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: F16B21/08
Filed: 1963-02-01
Abstract: 1,003,334. Stud and socket fastenings. F. T. PRODUCTS Ltd. Jan. 21, 1964 [Feb. 1, 1963], No. 4319/63. [Addition to 890,972] Heading E2B. A fastener 10, Fig. 6, for securing two members 38, 39 together, comprises a stud 12, and a retainer 11, in which the stud 12, Fig. 4, is in the form of a single strip of material which has been rendered resilient in the shape of an open loop, the limbs 28, 29 of the loop have inwardly directed feet 30, 31 and one of the limbs has an outwardly directed elbow for snap engagement in an aperture 41 in the member 38, in which the retainer 11, Fig. 3, has a substantially flat body 13 formed with a pair of cuts, the material between which is pressed out of the general plane of the body to form a shelf 20 under which the felt 30, 31 of the stud may be slidably engaged by opening the limbs and allowing the feet to spring back under the shelf, and in which each cut in the body 13 is non-rectilinear or both cuts are rectilinear and inclined to one another. In the embodiment shown both limbs of the stud 12 have outwardly directed elbows and each has a cut out 34, 35 the bottom corner of which is folded out to form a prong 36, 37. The retainer 11 is of deformable material and has legs 14, 15 at right angles to the plane of the body 13. To connect together the members 38, 39 which are a tube 38 with an aperture 41, and a panel with an aperture 40 respectively, the stud is first attached to the retainer by opening the limbs 28, 29 and allowing the feet 30, 31 to slide beneath the shelf 20. The stud and retainer are then inserted into the aperture 40, and the lower portions of the legs 14, 15 are bent as shown in Fig. 6, so that the body 13 of the retainer is clenched against the rim of the aperture. The tube 38 is then brought up against the panel 39 so that the outwardly elbowed limbs snap engage in the aperture 41. In modifications described in the Provisional Specification the cuts in the retainer are parallel straight lines and the ends of the limbs are bent outwardly to form lugs, inwardly directed feet being sheared from the limbs and bent into position. Alternatively the ends of the limbs are bent inwardly to provide feet and outwardly directed lugs are formed by making triangular cuts in the limbs and bending up the cut out material.
Patent GB-683362-A (GB)
Title: Improvements in muffler construction
IPC: B64F1/26
Filed: 1951-02-23
Abstract: 683,362. Sound insulation. LEMMERMAN, Inc., C. W. Feb. 23, 1951 [Nov. 14, 1950], No. 4487/51. Class 64 (ii) [Also in Group XXVII] Sound-absorbing panels 18 for a jet engine muffler are separated by a space 23 from an outer sheetmetal wall 16 and comprise layers 21, 22 of soundabsorbing material, e.g. metallic tinsel or mineral wool, between perforated metal plates 17, 20. There may be perforated plates separating the layers and sheets of asbestos fibres may be disposed within the panels and adjacent the perforated plates or between the layers. The space 23 may be packed with soundabsorbing material. Specification 684,510 is referred to.
Patent GB-1577371-A (GB)
Title: Implantable digital cardiac pacer having externally selectible operaing parameters
IPC: A61N1/372
Filed: 1977-02-03
Abstract: The various operating parameters of this implantable digital pacemaker can be set from outside by means of control signals. The control signals received by a receiver, e.g. magnetic tongue switch, are processed by a pulse generator (151) to form a digital signal, and the latter is processed in a counting device (182) to form a binary signal which denotes the number of the pulses present in the control signal. The binary control signal is not input by the counting device (182) into a memory (184) until the complete control signal has been received by the receiver. The controlling equipment, such as frequency regulator, amplitude regulator, pulse width controller, etc. is connected to the memory (184). Intermediate storage of the control signal in the counting device (182) excludes faulty adjustments as well as undesired short-term intermediate adjustments. <IMAGE>
Patent GB-489841-A (GB)
Title: Pyjamas
IPC: A41D10/00
Filed: 1938-02-14
Abstract: 489,841. Pyjamas. BOOTH, G. T. Feb. 14, 1938, No. 4511. [Class 141] A pyjama leg comprises a strap adapted to extend beneath the instep of the wearer's foot, and means for preventing movement of the strap longitudinally of the foot. As shown in Figs. 1 and 2, the strap consists of tabs 3, 4, connected together by an elastic insert 6, and to prevent longitudinal movement of the strap, the lower forward edge of the pyjama leg is curved upwardly at 7 to fit the arch of the foot, and the rear portion is curved at 8 to fit around the back of the heel. In a modification, Fig. 3, the strap 10 is stitched at its ends to the pyjama leg 9, and an elastic strap 13 adapted to extend over the arch of the foot is stitched at its ends to the strap 10.
Patent GB-398096-A (GB)
Title: Improvements in and relating to percussive tools
IPC: F28G3/14
Filed: 1933-02-14
Abstract: 398,096. Rotary scaling-hammers. LECHELT, T., 16, Parnassusweg, Amsterdam. Feb. 14, 1933, No. 4549. Convention date, March 11, 1932. [Class 124.] A rotary percussive tool for scaling and similar purposes comprises blades d which have an enlarged circular end e enclosed in the bore b of the tool holder a. The blades are thus mounted to pivot on the axis of the rotating shaft. Each blade forms a spacing piece between its neighbours and the cap f is provided with a rounded portion to allow the blades to become inclined.
Patent GB-1464846-A (GB)
Title: Hard-faced shaft
IPC: B23K35/00
Filed: 1975-02-03
Abstract: 1464846 Making shafts; rolling; welding by fusion HITACHI SHIPBUILDING & ENG CO Ltd 3 Feb 1975 4550/75 Headings B3A B3M and B3R [Also in Divisions F2 and H5] A steel shaft 19 has all or part of its peripheral surface coated with a weld metal overlay 30 of stainless steel or aluminium bronze which is rolled or shot peened to increase the fatigue strength of the shaft. A helical weld overlay 30 is formed on a shaft 19, e.g. a machine shaft, a ship's steering shaft, a propeller shaft, a sluicegate shaft by a submerged arc welding machine 22 using a band electrode 23 made of stainless steel or aluminium bronze. The welding machine 22 is connected to a screw 21 on the shaft 19 by a wire 26 so that when the shaft 19 is rotated by rollers 20, the machine 22 is advanced along rails 25. One side (31a) (Fig. 11, not shown) of each weld bead convolution is formed with a bevel, which the succeeding bead overlaps, by passing the band electrode 23 through a member 35, Fig. 12, which is connected via a coil 36 to an electrical supply (32) (Fig. 13, not shown) which is connected to the shaft 19. More than one weld layer 30 may be applied to the shaft 19. The weld overlay 30 on the shaft 19 is then rolled by rollers 40a, 40b, Fig. 15, which exert, by means of pistons 44a, 44b, a predetermined pressure set by a relief valve 51. In an alternative embodiment (Fig. 26, not shown) a keyway (64), which receives a key (63) for interconnecting a propeller, has its weld overlay shot peened.
Patent GB-1300548-A (GB)
Title: Improvements in or relating to electroluminescent devices
Inventor: VECHT ARON
IPC: H05B33/00
Filed: 1969-01-28
Abstract: 1300548 Electroluminescence TECHNOLOGY MINISTER OF 27 Feb 1970 [28 Jan 1969] 4566/69 Heading C4S A process for making an electroluminescent device comprises producing phosphor particles 4 of a compound or compounds of an element of Group IIb (e.g. Zn) with an element of Group VIb (e.g. S or Se) with an admixture of an activator, coating the particles with an element of Group Ib (e.g. Cu, Ag or Au) so as to introduce atoms of the element into the external surface of the particles, embedding the coated particles in a translucent matrix 5 (e.g. 50Á thick) and arranging in contact with two electrodes 2a, 2b and passing a forming direct electrical current (e.g. 0À5 to 5 watts cm.<SP>2</SP>) between the electrodes until the electrical resistance is increased (e.g. x 10) in a localized and predetermined region 7 of the phosphor layer, whereby the electroluminescence, A.C. or D.C. of either polarity, of the localized region in subsequent use is at least 100 times what it would have been if uncoated particles had been used. The translucent matrix may be polymethylmethacrylate or nitrocellulose. The localized region may be letter or figure shapes, a groove 6 being cut or scribed in the surface, to locally constrict the cross-sectional area of the phosphor layer through which forming current is to pass, a conductor etched, or heat applied to or generated within by applied visible or near infra-red radiation through masks to subject regions to distinct physical conditions which give rise to local heating Alternatively, the electrodes themselves may determine the localized region, this forming near the positive electrode. Doubly illuminated letters may be formed by using a double gap with a narrow intermediate conducting strip. The compound is preferably ZnS or ZnSe or mixtures or solid solutions of same and the activator preferably Mn or Cu and Mn. The particle to binder weight proportions may be 10 to 25%. The device is preferably encapsulated in a translucent vessel (18) containing inert gas, e.g. N 2 , with a drying agent (20) to increase its life (Fig. 3, not shown). High resistance regions form corresponding to gaps 26a, 26b to outline the letter "A" (Fig. 4, not shown). A sand wich device (Fig. 5, not shown) includes tin or indium oxide electrode (31) and Al graphite or Cu strip electrode (32). With orthogonally arrayed strips (31A) (32A) the Group Ib element is usually present as part of a complex surface phase in which atoms of the host lattice may in part have been replaced by the Group Ib element. The Group Ib element can be coated on to the phosphor particles by the use of organometallic compounds or by reacting the particles with a salt of the Group Ib metal in solution. Cu may be present in the coating in amount 0À2% by wt. of the phosphor particles. Incorporation in battery and transistor circuits is instanced.
Patent GB-940882-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D65/00
Filed: 1961-02-08
Abstract: 940,882. Disc brakes. FORD MOTOR CO. Ltd. (Ford Motor Co.). Feb. 8, 1961, No. 4664/61. Heading F2E. In order to overcome brake squeal in disc brakes, the brake disc is formed of a hat-shaped configuration comprising a two part construction having a sheet metal stamping which forms the inner flange 34, a cylindrical extension 38 and a radial portion 42 to which a cast iron rim 36 is attached, the rim 36 being formed with a series of circumferentially arranged outwardly extending slots 44 extending through the complete axial thickness of the disc and formed at an angle to the radius of the disc to lag the normal forward direction of rotation of the disc. The brake disc 24 is shown in position in an hydraulically actuated disc brake (Fig. 2). The inner flange 34 is secured to an annular structural piece 22 forming a support for the outer race of ball bearing assembly 18. The rotatable wheel axle 12 has a hub 16 affixed thereto and is rotatable supported by the ball bearing assembly 18. Brake pads 52, 53 are actuated by hydraulic pressure supplied through connection 72 and internal fluid ways 68, 70 in the caliper housing 50 to actuate pistons 60, 62 slidable in axially aligned cylinders in the caliper housing. Pistons 60, 62 are sealed by spring-pressed seals 64, 66. An alternative mechanically applied caliper unit (not shown) is provided to act on the brake disc when lever 104 is applied by connection 102 to the vehicle hand brake. Reference has been directed by the Comptroller to Specification 842,913.
Patent GB-564431-A (GB)
Title: Improvements in or relating to automatic switches as used in telephone or like systems
IPC: H01H63/02
Filed: 1943-03-23
Abstract: 564,431. Automatic exchange switches. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and COMFORT, E. E. March 23, 1943, No. 4688. [Class 40 (iv)] In a bi-directional switch of the kind described in Specification 391,123, the lever 16 which controls the rotary offnormal springs 17 has adjustably secured thereto by means of two screws passing through elongated holes a vertically-extending member 10 which has a somewhat pointed profile for engagement with the operating cam 13, the latter having recesses 15, 19 for accommodating that member in the normal rotary position and in the extreme position in which vertical release takes place.
Patent GB-1494970-A (GB)
Title: Railway track occupancy signalling system
IPC: B61L13/00
Filed: 1976-02-06
Abstract: 1494970 Track circuit GENERAL SIGNAL CORP 6 Feb 1976 [6 Feb 1975] 4794/76 Heading B7N In a track circuit receiver the track relay is released and maintained released when a vehicle on the track of the circuit only produces a series of short duration shunts. The receiver is for use with little used track which can develop an insulating film between successive vehicle passages. The track circuit transmitter applies a modulated carrier signal to the track which, in the receiver is applied via filter 10, amplifier 12, buffer 22, gate 24, shaper 26, detector 14 and driver 16 to operate track relay 18, the gate 24 is maintained open by its own output which is rectified in driver 28 to produce a D.C. signal for latching the gate open.  When a shunt occurs in the circuit the latching output from the driver, which has a fast time constant, immediately drops opening the gate so that the relay subsequently releases, the latching circuit thus ensures release of the relay which is slow to operate, even though the shunt is of short duration. The relay stays released until the gate is reopened. The absence of the signal is also detected by detector 36 which triggers a timer 34 having a duration of 2¢ seconds, and so long as the vehicle produces a shunt each 2¢ seconds the detector, in response to each resulting drop in signal, produces an output to return the timer to the start of its timing period. When the vehicle leaves the circuit the timer times out supplying an input to gate 30 which also receives the track circuit signal. Gate 30 supplies an output to shaper 26 and driver 28 which latches gate 24 open so that the track circuit signals pick-up the relay. Gates 24 and 30 are dyna-level gates which in the track signal input circuits include light emitting diodes light coupled to light sensitive diodes.
Patent GB-627277-A (GB)
Title: Improvements in lathe tools and holders therefor
IPC: B23Q17/22
Filed: 1947-02-19
Abstract: 627,277. Cutting-tools; lathe and other machine-tool details. JONES & LAMSON MACHINE CO. Feb. 19, 1947, No. 4866. Convention date, March 6, 1946. [Class 83 (iii)] A method of inserting a tool in a predetermined location in a lathe or like tool-holder comprises inserting the tool in a similar holder mounted on a comparator adapted to indicate the position of the tool relative to said similar holder and adjusting elements in the tool to cause it to take up the required position in the holder. The tool 30 has a shank of rectangular section adapted to rest on the ledge 18 of a tool-holder 10, and to be clamped thereon by a bridge-piece 22 and clamping bolts 24. The shank is provided with an end positioning screw 34 and lateral positioning screws 36 which engage respectively a locating plate 16 and the side wall 14 of the .holder. These screws are adjusted to position the tool correctly in the holder and be locked by grub screws 40. A corresponding tool-holder 46, Fig. 4, is used in conjunction with a shadow-type comparator 52 to re-set the locating screws correctly after the tool has been re-sharpened and a collar with circumferential graduations corresponding to graduations on the comparator screen may be used in conjunction with a socket-head spanner for setting the end adjustment screw 34.