baber/WOPTO huggingface dataset:
Patent GB-906572-A (GB)
Title: Improvements in or relating to apparatus for the removal of yarn from yarn carriers
IPC: B65H73/00
Filed: 1961-02-03
Abstract: 906,572. Orientation of bobbins. FISCHER A.G., G. Feb. 3, 1961 [Feb. 4, 1960], No. 4221/61. Class 78 (1). [Also in Group IX] In apparatus for the removal of yarn from a bobbin having a head portion and a shank portion, an incoming wound bobbin 6 causes an empty bobbin 3 to drop into a shoot 13 to take up the position 47, Fig. 1, with its head 46 downwards. The head 46 displaces an arm 17 of a lever 16 downwardly so that the lever 16 pivots about a shaft 23, this movement being arrested by a pin 51 (not shown) on the lever 16 striking a plate 25a. A cam 18 on the lever 16 abuts against a projection 49 on a collar 48 of a rotatable body 37. During the rotation of this body the lever 16 and plates 25a, 25b, Figs. 1 and 4, are urged against the action of a spring 32 so that an opening 13a in the shoot 13 is uncovered. The head 46 contacts a surface 53 of the body 37 and the end of the shank remote from the head passes through an opening 15 to rest on a support 29. The arm 17 prevents rotation of the bobbin relative to the body 37 which rotates until the cam 18 is released by the projection 49 to allow the plates 25a, 25b to re-assume their vertical position. A weight 22 causes counter-clockwise movement of the lever 16 until the arm 17 abuts a wall 33 of the shoot 13.
Patent GB-1137932-A (GB)
Title: Process for the production of nickel-refractory oxide powders
IPC: C01G53/04
Filed: 1966-01-31
Abstract: 1,137,932. Production of Ni-refractory oxide powders. SHERRITT GORDON MINES Ltd. Jan.31, 1966 [Feb.12, 1965], No.4241/66. Heading C7D. Ni-refractory oxide powders in which the oxide particles are in integral association with the Ni powder, are produced by adding insoluble refractory oxide particles (e.g. of submicron size) to a suspension of finely divided basic nickel carbonate, agitating the mixture and reacting it with hydrogen at a partial pressure thereof of at least 50 p.s.i. (e. g. 100-500 p. s. i. ) at a temperature above 40 C. (e.g. 95-175 C.). The basic nickel carbonate may be made by boiling a nickel ammine carbonate solution (e.g. produced by a leaching process) to drive off NH 3 and CO 2  the refractory oxide may be one or more oxides of Th, Y, Ce, Mg, Be, Fa, Hf, Zr, Si, U, Ti, or Al and a catalyst, such as up to 1 g/l of anthroquinone, substituted anthroquinone, benzoquinone, paphthoquinone, artho or para polyhydric phenols, tannic acid or morin, may be present during the reduction step. The powder may be used to make wrought dispension hardened strip by processes involving compaction, hot working and repeated cold working and annealing and for alloy products the powder is mixed with other metal powders such as Cu, Mo and W.
Patent GB-711260-A (GB)
Title: Improvements in and relating to impedance networks
Inventor: SARAGA WOLJA
IPC: H03H7/21
Filed: 1949-06-23
Abstract: 711,260. Phase shifting networks. TELEPHONE MANUFACTURING CO., Ltd. June 20, 1950 [June 23, 1949], No. 4266/53. Divided out of 711,207. Drawings to Specification. Class 40 (8) A network for producing a phase shift # in radians equal to 2 tan-<SP>1</SP> ax where x is a normalized frequency and a is a real and positive constant, and for producing a constant loss over an extended frequency range, consists of a lattice network having arms including dissipative reactances, these arms having a characteristic impedance of the form Z=Ro tan h (α o +j#)/2, where Ro is an arbitrary resistance, αo is the difference in attenuation in nepers between that of the network and that of an ideal network formed of loss free reactances, the arms being formed of a resistance in parallel with a series combination of an inductance and resistance. In an alternative network producing a phase shift equal to 2 tan-<SP>1</SP> ( ax/1-bx2 ), a and b being real and positive constants, the network arms consist of a resistance in series with a parallel combination of two impedances one of which consists of a resistance in parallel with a series combination of a resistance and inductance. By producing a network with resistances in all impedances, it is possible to introduce the inherent resistance of all the reactances into the calculations and thus produce a network without the approximation resulting from the assumption of loss free reactances. Specifications 594,431 and 711,207 are referred to.
Patent GB-1365867-A (GB)
Title: Method and means of damp proofing porous material
IPC: E04B1/64
Filed: 1970-01-29
Abstract: 1365867 Damp-proofing E J MAWHOOD 19 April 1971 [29 Jan 1970] 4270/70 Heading D1P Porous building structures are damp-proofed by forming a hole or holes in the structure and introducing a frozen pellet of damp-proofing material into each hole, which is subsequently allowed to thaw. The pellet in the form of a rod may be placed on an absorbent pad which has previously been inserted into the hole and removable seals may be applied to the hole(s) whilst thawing takes place. The pellet may be a frozen aqueous silicone suspension.
Patent GB-1223652-A (GB)
Title: A method of manufacturing the focusing grids of colour television tubes
IPC: H01J9/14
Filed: 1969-01-28
Abstract: 1,223,652. Making focusing grids; coiling helices. THOMSON-CSF. 28 Jan., 1969 [1 Feb., 1968], No. 4610/69. Headings B3A and B3E. A method of making focusing grids for colour television tubes comprises preparing a sheet of parallel wires g on the sides of a prism-shaped drum 1, whose axial edges are formed by screws 2 whose pitch is that of the desired grid, the wires being positioned in the threads of the screws, and fixing the wires of a sheet on a frame D, on which the grid remains until it is clamped between the front wall F and the flared portion C of the tube envelope. The wire sheet is secured to the frame D firstly by adhesive bonding and then by metallizing so that its flatness is dependant on that of the drum 1 rather than that of the frame. The wires are severed between the edges of the frame and the screws 2 and the tube envelope fits within the confines of the frame so that when the grid has been sealed in the tube, the frame can be cut away and re-used.
Patent GB-808912-A (GB)
Title: Improvements in electrical two-part couplings and switch-couplings for cystoscopes and other endoscopic instruments
Inventor: BEAN ALBERT EDWARD
IPC: H01R13/66
Filed: 1956-02-27
Abstract: 808,912. Two-part couplings. GENITOURINARY MANUFACTURING CO. Ltd. Feb. 26, 1957 [Feb. 27, 1956; Feb. 12, 1957], Nos. 4735/57. Divided out of 808,911 and 4736/57. Class 38 (1). A connector for a cystoscope and other endoscopic instrument having a condenser connected between the leads of a twin lead supply cable. One embodiment (Figs. 1-3, not shown) forms the subject of Specification 808,911. In the embodiment of Fig. 4, contacts 33 and 35 are separated by insulation 36, and the outer contact of a mating concentric plug is interrupted by an insulating section so that the contact tongue 35 may be brought into and out of contact by relative rotation of the plug and socket. The condenser 27 connected across the cable leads is housed in body 1. Alternatively (Figs. 5 and 6) the contacts may be in the form of plates 37 separated by insulation 38 and having forks 40 for clipping on to cylindrical sleeve contacts on the instrument, the condenser 27a being housed in a tube 44 between terminals 39 across which the condenser is connected. A sliding switch 45 connects or disconnects plates 37.
Patent GB-1220443-A (GB)
Title: A method of refining the structure of alloys by heat treatment
Inventor: COLLEY CEDRIC CHARLES EDWARD
IPC: C22F1/16
Filed: 1967-02-01
Abstract: 1,220,443. Heat-treating alloys. PRESSED STEEL FISHER Ltd. Jan.15, 1968 [Feb. 1, 1967], No.4796/67. Headings C7A and C7N. Those eutectoid or near eutectoid alloys that on quenching to ambient temperature from above the eutectoid transformation temperature retain the high temperature structure for an incubation period before transformation occurs are quenched to a temperature below ambient and are then warmed at least to ambient temperature before or during transformation. As exemplified 78% Zn-22% Al was heated for 30 minutes in a furnace at 350 C., quenched to -10 C. in equal parts of water and ethylene glycol, held for 1 hour and then placed in water at 40 C. to bring about transformation; a sample of 70% Zn-30% Al was quenched from 35% into cold water and then cooled to 20% in solid carbon dioxide and methyl alcohol, at which temperature it was held for 2 hours, after which it was immersed in water at 25 C.
Patent GB-1005477-A (GB)
Title: Foamable compositions
IPC: B29C51/08
Filed: 1964-02-05
Abstract: A foamable composition comprises an unswollen polymer, a finely divided absorbant, the absorbent having absorbed thereon a volatile liquid which is non-reactive with and has not more than a slight solvent action on the polymer, and a nucleating agent.  The polymer is preferably in a pelletized form and may be cellulose ethers and esters, homopolymers and copolymers of monomeric compounds containing the CH2=C< grouping such as styrene, ethylene and propylene, vinyl halides, vinyl esters, vinyl ethers, unsaturated carboxylic acids and their derivatives, and interpolymers of the above mentioned vinyl monomers with a ,b -unsaturated polycarboxylic acids and their derivatives.  The polymer may also be a rubber, e.g. natural rubber, butadiene (5%)-styrene copolymers, isobutylene-isoprene copolymers; a thermosetting resin, e.g. polyurethanes, phenol-formaldehyde resins, melamine-formaldehyde resin, bisphenol A-epichlorhydrin resin and other epoxy resins.  Suitable absorbents are diatomaceous earth, fuller's earth, silica gel, activated alumina, molecular sieves, attapulgus clay and activated carbon.  The preferred volatile liquids are aliphatic hydrocarbons boiling between 10 DEG  and 100 DEG  C. and the nucleating agents are preferably a mixture of two materials which react to form carbon dioxide and water, e.g. a mixture of annomium, alkali metal or alkaline earth carbonates or bicarbonates with an inorganic or organic acid or acid salt which is preferably solid. Wetting agents may also be incorporated in the composition. The polymer and absorbent are preferably dry mixed with the nucleating agent and the mixture fed to the hopper of an extruder. On extrusion, a sheet having a tough skin may be formed by rapidly chilling. The surfaces of the sheet with air blasts or other fluid coolants such as water, a mixture of air and water, nitrogen and argon.  The resultant foams are useful in the manufacture of cups, food trays, buckets, plates and face-masks. Specification 998,180 is referred to.
Patent GB-729682-A (GB)
Title: Improvements relating to electron tubes
IPC: H01J19/42
Filed: 1953-02-20
Abstract: 729,682. Electric insulating materials. GENERAL ELECTRIC CO. Feb. 20, 1953 [Feb. 23, 1952], No. 4821/53. Drawings to Specification. Class 140. [Also in Group XL (a)] A method of manufacturing insulating spacers for electron tubes consisting of sheet asbestos, which may contain up to 10 per cent of bentonite or other clay, comprises immersing it in a solution of colloidal silica produced by hydrolysing a silicate with a halogen-free acid. The wetted sheets are air dried, calendered to produce any surface roughness and air fired at 450-650‹ C. for 45 minues to 30 seconds. The desired shape of spacer is then punched out. The spacers may be improved by spraying with alumina, for example in a suspension in nitro cellulose after the air-firing.
Patent GB-608154-A (GB)
Title: Improvements in hand knife
IPC: B26B5/00
Filed: 1946-02-15
Abstract: 608,154. Handles. PENNEY, R. L. Feb. 15, 1946, No. 4842. Convention date, Dec. 8, 1945. [Class 61 (i)] A knife blade handle has a bulbous-section grip part 11 and terminates in two closelyspaced flat jaws 12 between which the blade 15 is held by the combined action of a pressed-up projection 16 on one jaw engaging but not passing completely through a hole in the blade and a shoulder 21 on the handle part or by means of two projections on one of the jaws engaging but not passing completely through two holes in the blade, which latter is removable by prying the jaws apart.
Patent GB-275107-A (GB)
Title: Improvements in and relating to dovetail joints
IPC: F16B12/22
Filed: 1927-02-21
Abstract: 275,107. F÷rde, M. A. Feb. 21, 1927. Pinning or dowelling.-A dovetail joint is strengthened by providing notches c in the meeting members at an angle of about 45‹ for the reception of metal plates d. The metal plates may be replaced by a continuous metal band.
Patent GB-480996-A (GB)
Title: Improvements in or relating to electro-optical image transmission systems
IPC: H01J29/45
Filed: 1937-02-19
Abstract: 480,996. Photo-electric cells; cathode-ray tubes. ELECTRICAL RESEARCH PRODUCTS, Inc. Feb. 19, 1937, No. 5012. Convention date, March 4, 1936. [Class 39 (i)] A transmitting device for television and like purposes comprises a film of photoconductive material united to a film of photo-emissive material; the image to be transmitted is projected on to the photoconductive fihn through a transparent metal film in contact with it and the photo-emissive film is scanned by a beam of radiation. Preferably the photo-conductive film is of some high resistance material such as mercuric iodide or native sodium chloride ; in this case the photo-emissive film, which must be discontinuous, and the metal film form with the photo-conductive film a number of elementary condensers, the charges of which leak away at different rates corresponding to the conductivity produced by the illumination and the signal currents are produced when the condensers are recharged at the next transit of the scanning-beam. To prevent lateral discharge between these condensers the thickness of the photo-conductive layer must be less than the diameter of the scanning spot, preferably about one-tenth as much. If a photo-conductive material of low resistance, such as selenium, is employed the working currents are produced by the discharge through the selenium; in this case the film should be divided into small areas. The Figure shows a television system comprising such a transmitter. The screen C and a fine mesh electrode 15 are enclosed in an exhausted container 14 and the object focused on the screen by a lens 19. The scanning- beam is produced by a cathode-ray tube with a fluorescent screen 41 the luminous spot on which is projected on to the photo-electric surface of the screen by a lens 26. Scanning is effected by deflecting plates of 42, 45 of the ordinary type connected in the ordinary way to deflecting plates 53, 54 of a receiving tube 50. The electrode 15 and screen Care connected to the grid and cathode of a valve 18 and the resulting oscillations, amplified if necessary transmitted to a transformer 60, one terminal of which is connected to the anode 52 and a grid 56 in the tube 50, and the other to a second group 57 in the tube. By this means the discharge in the tube 50 is modulated in accordance with the signal current. A modification is described in which the scanning is effected by rotating discs instead of cathode-ray tubes.
Patent GB-801914-A (GB)
Title: Improvements in or relating to suction or vacuum lifting devices
Inventor: LYTLE GEORGE FRANKLIN
IPC: B66C1/02
Filed: 1957-02-14
Abstract: 801,914. Suction devices for handling articles. VAC-U-LIFT CO. Feb. 14, 1957, No. 5068/57. Class 78 (4). The flexible annular sealing ring 19 of a suction lifting pad has a skirt whose section includes an outer straight portion 20 and an inner portion 22 meeting at a point 21 for engagement with the object 23 to be lifted; this causes the ring to sweep the surface of the object as it flexes into engagement with it. The sealing ring also has an inwardly directed lip 16 adapted to float in a groove 15 in the pad so that it makes sealing contact with the groove only after the load 23 is engaged.
Patent GB-339551-A (GB)
Title: An improvement in or relating to paint and like cans
IPC: B65D25/20
Filed: 1930-02-15
Abstract: 339,551. Robinson, F. G. Feb. 15, 1930. Addition to 239,442 and 291,713. Formed with means for retaining labels. - Movement of the indicating device 2 is prevented by passing a tongue or projection thereon through a hole formed in the lid, in place of the reverse arrangement described in the parent Specifications. In the form shown in Fig. 2 a tongue 3<x> is passed through a slit 6 formed in an off-set lip 7 projecting from the lid flange and turned down to lie against the inner wall of the lid. In Fig. 4 the tongue is turned outwardly to lie along the upper surface of a lip 7. In Fig. 6 the tongue is shown passed upwardly through an outer slit 6 in the lip and downwardly through an inner slit, but may be passed through so as to emerge upwardly from the second slit and be turned down against the wall of the lid as in Fig. 2. The tongue may be formed with a raised portion adapted to engage the side of the slit through which it is passed.
Patent GB-671580-A (GB)
Title: Milling process and apparatus
IPC: B02C9/00
Filed: 1950-03-01
Abstract: 671,580. Jet pulverizers. SAFETY CAR HEATING & LIGHTING CO., Inc. March 1, 1950 [March 5, 19491, No. 5231/50. Class 59 In a jet pulverizer in which the material is disintegrated by blowing it against a target array t h e milled particles are separated into two classifications by providing gaps in the array through which the smaller particles are carried by the air stream. In the apparatus shown wheat to be milled is fed by a spout 10 connected to a bin, (not shown), into an air stream generated b y a blower 14 the air stream and material being directed by the nozzle 20 formed between the co-operating conoidal surfaces 136, 16, against an array 22 of spaced vertically positioned targets 22a the larger particles of the disintegrated product, which do not pass through the gaps between the targets, falling into a hopper 24 and thence into a shoot 26 whilst the smaller particles pass through the gap into passageways 28, 30. These passageways increase in depth throughout their length thereby increasing their cross-sectional area, their smaller ends being positioned on opposite sides of a vane 32 which splits the air stream and milled products passing through the gaps. The air streams in the passageways carry the particles around the outside of the array to plates 140, 142, which direct the streams into the intake 34 of a cyclone collector 36 wherein the particles fall into a hopper 38, which is emptied into a shoot 40 by an air lock valve 42, whilst the air passes to the intake of a blower 14 for recirculation. The target array 22 comprises upper and lower rings between which are fitted individual bars 22a. In order to make the target array, the conoidal member 16 and the interior of the mill casing 64, accessible for purposes of cleaning, renewing, &c., the hopper on which the array is mounted is made slidable relative to the mill casing by providing it with a flange 24a having outwardly extending portions in which are formed recesses 102, 104, 106, in which the hollow legs 50, 52, 54 of the apparatus are positioned. To aid movement of the hopper assembly, which is secured when in an operative position to the casing 64 by the bolts 128, it is counterbalanced by weights 108 slidably mounted within the legs. In a modification, Figs. 10, 11, these passageways are replaced by a volute passageway 160 whilst the target array, 156, comprises a cylinder formed with a series of slots 170. The conoidal member 168 is not mounted within a hub attached to the array as in the previous embodiment but is mounted within a hub of a wheel-shaped member 178 separate from the array and resting on the hopper 148.
Patent GB-1390271-A (GB)
Title: Process for the oxidation of olefins to aldehydes and acids
IPC: B01J23/887
Filed: 1972-02-04
Abstract: 1390271 Olefin oxidation catalysts STANDARD OIL CO 4 Feb 1972 [4 Feb 1971] 5246/72 Heading B1E [Also in Division C2] Oxidation catalyst for use in the preparation of acrolein and/or acrylic acid from propylene and molecular oxygen, and/or of methacrolein and/or methacrylic acid from isobutylene and molecular oxygen, comprises (a) a composition having the empirical formula:  wherein A is an alkali metal, for example potassium, B is phosphorus and/or arsenic, C is at least one element selected from Groups IIA and IIB, for example magnesium, a is 0 to less than 0.1, b is 0 to 3, c is 0.1 to 10, d is 0.1 to 6, e is 0.1 to 6, f is 8 to 16 and x is a number determined by the valence requirements of the elements other than oxygen present in the composition and, optionally, (b) support material which may constitute from 10 to 90 weight per cent of the catalyst, specified materials being silica, alumina, titania, zirconia, silica-alumina, pumice, montmorillonite, silicon carbide, silicates, aluminates, borates, carbonates and inorganic phosphates, for instance aluminium phosphate. The catalyst may be prepared by conventional procedures which may involve formation of pellets by extrusion or of spheres using the oil drop method or of powder by spray-drying. Prior to use, the catalyst may be treated at elevated temperature with reducing agent in the presence of a limited amount of air; after use, the catalyts may be regenerated by contact with air at an elevated temperature. Exemplified catalysts contain 0 or 20 or 40 weight per cent of silica and, correspondingly, 100 or 80 or 60 weight per cent of a composition containing, in oxidic form, magnesium, iron, bismuth, molybdenum and either (i) neither constituent A nor constituent B or (ii) phosphorus but no constituent A or (iii) arsenic but no constituent A or (iv) potassium and phosphorus; exemplified comparison catalysts contain 50 weight per cent of silica and 50 weight per cent of a composition containing, in oxidic form, bismuth, molybdenum, phosphorus and, optionally, iron. Reference has been directed by the comptroller to Specifications 1284464 and 1330074.
Patent GB-256287-A (GB)
Title: An improved trigonometrical appliance
IPC: G01C15/00
Filed: 1925-12-11
Abstract: 256,287. Hanks, F. A. Dec. 11, 1925. Plane trigonometry calculators. - An instrucment of the kind described in Specification 8031/15 for determining the position and course of an aerial body and for analogous purposes comprises a pair of dials FS, DP representing two observation posts and connected by a slidable graduated rule E. On each dial is swivelled an alidade one carrying another dial DL representing the body. To this last dial is pivoted an arm L and other and co-operating arms M, J are pivoted to the first two dials. A form of dial that may be used is shown in Fig. 2, and comprises two pairs of graduated circles, one pair a being divided into six-hundredths and the other a<1> into degrees. A ring C enables reading corrections to be applied and a sighting ring B may also be added.