baber/WOPTO huggingface dataset:
Patent GB-810268-A (GB)
Title: Improvements in or relating to methods for controlling the degree of polymerization in the polymerization or copolymerization of ethylenically unsaturated monomers
IPC: C08F110/02
Filed: 1956-03-16
Abstract: A catalyst used for the polymerization of ethylenically unsaturated hydrocarbons (see Group IV (a)), comprises a compound of Ti, Zr, Ce, V, Nb, Ta, Cr, Mo or W, together with a lithium aluminium tetraalkyl and wherein the molar ratio of the catalyst components is in the range from 2.5 to 4.5.  Catalyst components disclosed are titanium trichloride, tetrachloride and tetrafluoride, zirconium and vanadium tetrachlorides, niobium and molybdenum pentachlorides, tantalum pentabromide, cerium trichloride, tungsten hexachloride, tetra-(2-ethylhexyl)-titanate, tetrapropyl titanate, octylene glycol titanate, triethanolamine titanate, tetraethyl zirconate, tetra-(chloroethyl) zirconate, and the lithium aluminium tetraalkyls wherein the alkyl is n-butyl, heptyl, n-octyl or ethylcyclohexenyl. Catalyst preparation and polymerization are preferably effected in an inert medium, e.g. cyclohexane, n-heptane, benzene, toluene, or xylene.  Specifications 682,420, [Group IV (a)], 776,326, 777,414, [Group IV (a)], 777,538 and 778,639 are referred to.ALSO:The degree of polymerization of an ethylenically unsaturated hydrocarbon is controlled by maintaining the initial molar ratio of the Ti, Zr, Ce, V, Nb, Ta, Cr, Mo or W compound to the lithium aluminium tetraalkyl in the catalyst, at from 2.5 to 4.5. Monomers specified are ethylene, propylene, butene, isobutylene, styrene and mixtures thereof, and the catalyst components disclosed are titanium tetrachloride and tetrafluoride, titanium trichloride, zirconium tetrachloride, niobium pentachloride, vanadium tetrachloride, tantalum pentabromide, cerium trichloride, molybdenum pentachloride, tungsten hexachloride, tetra-(2-ethylhexyl)-titanate, tetrapropyl titanate, octylene glycol titanate, triethanolamine titanate, tetraethyl zirconate, tetra-(chloroethyl)-zirconate, and the lithium aluminium tetraalkyls wherein the alkyl is n-butyl, heptyl, n-octyl or ethylcyclohexenyl. An inert medium, e.g. cyclohexane, n-heptane, benzene, toluene or xylene is preferably present, and the polymerization is preferably carried out until the catalyst loses activity.  Small quantities of hydrogen and oxygen may be included as additional methods of molecular weight control.  In an example, ethylene is added continuously.  The products are linear polymers of melt index from 0.05 to 1 and may be used in the manufacture of films, fibres, mouldings and extruded wire coverings.  Specifications 682,420, 776,326, 777,414, 777,538 and 778,639 are referred to.
Patent GB-365870-A (GB)
Title: Improvements in or relating to footwear
IPC: A43B21/47
Filed: 1931-03-19
Abstract: 365,870. Boot &c. protectors. BRIDI, B., 124, Feldstrasse, Schuhmacher, Zurich, Switzerland. March 19, 1931, No. 8451. [Class 17 (iii).] A removable pad for a boot heel is carried by a metal frame 26, Fig. 2, which is formed with a recess 27 having dovetail edges slidably to engage with a metal plate 24, Fig. 1, carried by the heel body, the two plates being locked in position by the engagement of hooks 33 at the front end of a U-shaped spring 30 with cut-away portions 32 of the plate 24. The pad may be countersunk in the tread face of the frame 26, which may also be formed with projections, or have heavy nails &c. secured to it, for mountaineering. In a modified construction, Fig. 5, the U-shaped spring is carried by a metal plate 40 which is held in a studded heel-shaped plate 41 undercut to engage the plate 24 on the heel.
Patent GB-943526-A (GB)
Title: Improvement in or relating to electronic engraving machines
IPC: B23B3/28
Filed: 1962-03-05
Abstract: 943,526. Engraving. GRAPHIC ELECTRONICS Inc. March 5, 1962 [Dec. 29, 1961], No. 8452/62. Heading B6J. [Also in Division B3]  An engraving machine of the type comprising a scanning cylinder on which a photograph or other copy is mounted, an engraving cylinder on which a metal or plastic plate to be engraved is mounted, an engraving tool and scanning apparatus for sensing the light reflected from the copy and transmitting electrical impulses proportional thereto to the engraving tool, has a lead screw for simultaneously moving the engraving tool and the scanning apparatus along their respective cylinders, thrust bearing means preventing axial movement of the lead screw when the latter is rotated during an engraving operation. The thrust bearing is mounted in a housing 56 carried by the machine frame. One end of the lead screw 38 is secured to a shaft 92 journalled by means of a leather gasket 98 in a bore 60 in the housing 56. A reduced-diameter threaded portion 94 of the shaft 92 is received in a threaded hole 90 in one end of a shaft 47 which is journalled by means of a leather gasket 80 in an end-plate 84 of the housing 56. A reduced-diameter portion 62 of the shaft 47 has frictionally mounted thereon two inner races 70, 74 of roller bearings 66, 68. Cages 71, 76 carry inclined sets of rollers 72, 77 respectively which are interposed between the races 70, 74 and outer races 73, 78, the outer races being positioned in a bore 58 in the housing 56. The shaft 47 has a ratchet wheel 48 fixed thereon and is intermittently rotated by means of a pawl which coacts with the ratchet wheel. Such rotation is transmitted through the shaft 92 to the lead screw 38, the roller bearings 66, 68 constituting thrust bearing means which prevent axial movement of the connected members 47, 92, 38.
Patent GB-368533-A (GB)
Title: Improvements in radio-receiving apparatus
IPC: H04B1/10
Filed: 1931-03-20
Abstract: 368,533. Valve amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. March 20, 1931, No. 8630. Convention date, April 8, 1930. [Class 40 (v).] In order to prevent disturbances in wireless receivers the valves of which derive their anode voltage from a power supply network, the gridcathode circuit of at least one of the valves lies in one diagonal of a bridge connection the other diagonal being between earth and the cathode of the next valve. In the known arrangement of Fig. 1, the receiver earth connection is shown as a fictitious impedance 10, across which a disturbing voltage Vj is induced due to coupling of the leads 14, 15 with a disturbing source. This disturbing voltage reaches the grid of 4 through the circuit 3, 2, 11 the latter being the capacity of the aerial. According to the invention, an impedance 22, constituted by the fictitious impedance 10 and the addition of a further impedance, is connected between the cathode of valve 5 and earth, one end being connected to the grid of valve 4 through a small condenser 16 while the cathode of 4 is connected to the impedance by a slider. The tuned circuit 3 thus constitutes one diagonal and the impedance 22 the other diagonal of the bridge. The invention is applicable to high or lowfrequency circuits.
Patent GB-809681-A (GB)
Title: Improvements in apparatus for detecting the presence or absence at a location, of a body of liquid
Inventor: WORSWICK BERNARD AUGUSTINE
IPC: G01F23/296
Filed: 1956-03-20
Abstract: 809,681. Automatic liquid-level control systems. BAILEY METERS & CONTROLS Ltd. March 19, 1957 [March 20, 1956], No. 8658/56. Class 38 (4). [Also in Groups XXXVIII and XL (c)] An ultrasonic transducer 1 (see Fig. 1), is so arranged in a valve oscillator circuit 3, 4 that when the liquid in a tank reaches a level 7 relay 5 is energized; the relay may actuate a bell or a lamp or may control a drain or a pump. The transducer capacitance when the liquid is below the datum level is such that oscillations in the circuit of valve 34 (see Fig. 2) ensue, causing relay operating valve 32 to be cut off. When the liquid reaches the datum level the transducer capacitance change, due to increased absorption of the ultrasonic waves of the liquid, inhibits oscillations the resulting conduction in valve 32 energizing relay coil 41. Capacitor 35 is chosen to give an oscillation frequency which is a resonant frequency of the transducer. Capacitors 35<SP>1</SP> are added manually, or automatically under thermostatic control, if the transducer capacitance varies with temperature. Details are given of various transducer mounting arrangements (see Figs. 4-7, not shown). In Fig. 8, not shown, the variation in level of a corrosive liquid is coupled mechanically to a piston which correspondingly varies the free surface level of a liquid determining the transducer circuit condition. Separate transmitting and receiving transducers are used in a further embodiment (see Group XXXVIII), Figs. 9 and 10 not shown.
Patent GB-1107801-A (GB)
Title: Stitch formation
IPC: D05B1/20
Filed: 1966-02-28
Abstract: 1,107,801. Stitched seams, sewing machines. MERROW MACHINE CO. 28 Feb., 1966 [12 April, 1965], No. 8707/66. Heading D1G. An overedge chain stitch seam is formed by passing at least a first needle thread through the work material at spaced points to form a first sequence of chain stitches, and simultaneously passing at least a second needle thread through the work material at points spaced from the points of penetration of the first needle thread and longitudinally aligned therewith to form a second sequence of chain stitches which overlies the first sequence to form a single seam. The conventional overedge sewing machine shown in Fig. 1 is modified to produce the seam by mounting on the needle carrier 6 two needles 5, 13 spaced in the line of stitching and providing corresponding under loopers 7, 14 and overedge loopers (9), (15). The seam shown in Fig. 4 comprises two single-thread type 501 seams, Fig. 5, shows two threethread type 504 seams, Fig. 6 shows a single-thread type 501 seam and a twothread type 502 seam, Fig. 7 shows two type 502 seams, Fig. 8 shows two three-thread type 503 seams, Fig. 9 shows a type 501 seam and a type 504 -seam, Fig. 10 shows two singlethread crochet-type seams, and Fig. 11 shows two two-thread type 510 seams.
Patent GB-526536-A (GB)
Title: Improvements in air heaters
IPC: F24H3/08
Filed: 1939-03-20
Abstract: 526,536. Air-heating stoves. HAYES, A. H., and NICORESTI, J. C. March 20, 1939, No. 8777. [Class 64 (i)] Horizontal tubes e are connected to headers b, c so partitioned as to direct air entering at the top of a header backwards and forwards through the tubes to an outlet d at the bottom of the other header. The heating gases flow upwards over the tubes from a hot gas inlet or a combustion chamber. The side plates between the headers are secured by bolts or studs engaging holes slotted to allow expansion and contraction of the tubes.
Patent GB-951284-A (GB)
Title: Processes for dyeing and padding hydrophobic materials
IPC: D06P1/00
Filed: 1962-03-07
Abstract: Processes for dyeing filaments, fibres, foils and ribbons of aromatic polyesters, e.g. polyethylene terephthalate and esters of terephthalic acid and 1, 4-bis-hydroxymethyl-cyclohexane, polyamides, polyurethanes, polyvinyl chlorides, polymers and copolymers of acrylonitrile, cellulose esters (including triacetate) and polyolefins comprise treating them in either order with azomethines of aromatic amines which may contain solubilising groups in the radical of the aldehyde component and with (a) quinones, or (b) N-halogen quinonimines or N, N1-dihalogenoquinonimines of optionally substituted quinones, or (c) with compounds containing in a carbocyclic ring the grouping <FORM:0951284/D1-D2/1> , wherein X and Y denote C-C bonds or H or halogen atoms, or with (d) quinoneanil-N-halogenimides, or by treating the materials with the said azomethines and (e) compounds which can be transformed by oxidising agents into quinoid compounds together with (f) organic or inorganic oxidising agents.  The azomethines may be prepared by condensing an amine with an aldehyde, many components for which are specified.  Suitable compounds (a), (b), (c), (e) and (f) are already listed in Specification 926,975 however, a new oxidising agent (f) is mentioned viz. Ceric sulphate.  Specified compounds (d) are quinone-anil-N-chloro- or -bromamide and 2,5-dichloroquinone-anil-N-chlorimide.  Preferably the azomethine is applied first from a bath at 60-140 DEG C. which may p  also contain emulsifying or dispersing agents (a number are specified), a carrier, e.g. trichlorobenzene diphenyl, diphenyl ether or esters of aromatic acids and reducing agents such as sodium sulphide, sulphite, dithionite and thiosulphate, hydroxylamine, hydrazine hydrate, sodium borohydrate or mixtures thereof.  The material may then be marked and, if desired, dried and then treated with the compounds (a) and/or (b) and/or (c) and/or (d) or mixtures of (e) and (f) at temperatures up to 140 DEG C. An after-treatment may be given in a reductive bath containing a sulphite or formaldehyde-sulphite addition product and, frequently, an emulsifier.  In a modification of the process the material is padded with the azomethine in the presence of hydrazine and then, in continuous operation, dried, thermofixed at 200-210 DEG C. and subsequently treated with the other compounds as above. Examples are given.  Specification 870,045 also is referred to.
Patent GB-421149-A (GB)
Title: Process for the manufacture of compressible fibrous materials
IPC: B32B27/00
Filed: 1934-03-21
Abstract: In making compressible fibrous materials, sheet-like fibrous aggregates are in the moist condition-the moisture content preferably exceeding 15 per cent-and if required with the aid of heating, subdivided into small sheet-like pieces, e.g. by slow-speed mechanical disintegrators, whilst preserving the fibre as much as possible, the pieces being then dried and mixed with binders.  The humidifying agent may be water, wholly or partly as steam or vapour, or alkaline salt solutions, and treatment of the aggregates therewith may be preceded by treatment with a wetting agent.  The aggregates may be felted or woven cellulose, wool, wood-pulp, cotton, asbestos, hemp, flax, jute bast; they may be dyed when moist or dry.  The binders may be synthetic resins, bitumen, albumen products, cellulose derivatives, natural or synthetic rubber, latex.  Loose fibres, such as acetyl cellulose, and fillers, such as chalk, talcum, china clay, pulverized asbestos, may be added at any stage of the process.  The dried pieces may be passed through grooved rollers, to obtain a variegated outer surface of the final products.
Patent GB-878386-A (GB)
Title: Treatment of molten ferrous metal
Inventor: COOK LESLIE
IPC: C21C1/02
Filed: 1959-03-13
Abstract: A process for the treatment of molten ferrous metal comprises blowing an oxidizing gas on to or into the molten metal and introducing below the surface of the metal powdered or granular carburizing material in suspension in a carrier gas.  The carrier gas may be an inert gas, e.g. nitrogen, carbon dioxide, or steam, and the carburniing material may be graphite, anthracite, coke, pitch, coal, or tar.  The oxidizing gas, e.g. oxygen, oxygen enriched air, and mixtures of oxygen with carbon dioxide, steam, or an inert gas containing over 25% of oxygen by volume, may be used as the carrier gas if due regard is given to the fire hazard, and slag forming materials e.g. lime, iron oxide, fluorspar or bauxite, may be added to the oxidizing gas. The metal may be contained in a furnace, a converter, a mixer, or a ladle.
Patent GB-688203-A (GB)
Title: A new or improved water-setting composition
IPC: C04B14/28
Filed: 1949-04-01
Abstract: A water-setting composition comprises sea-shell grit as an aggregate, and a binding material, and a reinforcing material. The grit, preferably in the form of crushed shells known as sea schram may first be boiled and then added to a binder such as portland cement. The reinforcing material may include wire, wire mesh, expanded metal, and wood lathing and fibrous material such as asbestos and cork.  In addition talc, calcium chloride and pigments may be added.  The composition may be used for flooring and tiles and may be polished by a sanding machine, wet scrubber or carborundum stone.  The Provisional Specification describes also the addition of wood wool, sawdust, wood flour and bituminous emulsion.
Patent GB-668178-A (GB)
Title: Improvements in and relating to moulding apparatus
Inventor: MACKROW NORMAN HATTON
IPC: B29C33/40
Filed: 1949-04-01
Abstract: 668,178. Glass manufacture. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 30, 1950 [April 1, 1949], No. 8978/49. Class 56. [Also in Groups V and XXII] Moulding apparatus comprises a lower member 6 having a well 6' in which the moulding material is initially placed, and an upper member 5 which descends to force the material from the well into the mould cavity 20. The mould cavity lies between the ends of die members 16, 17 which are disposed in registering bores in members 5, 6 and initially the mould cavity lies partly in member 5 and partly in member 6. The die members 16, 17 are carried by cage members 13, 14 which are releasably secured together by pins 15. The material moulded may be glass, but the invention is described with reference to the moulding of thermosetting plastic material. In operation, after member 5 has descended to. fill the mould cavity (this being the position shown) and the hot material is plastic, the cage 13, 14 with its die members, is depressed, the mould cavity, with its article, being moved to a position wholly within the lower member 6. This movement shears off the excess material remaining in the well. The curing of the article is then completed whilst it is in the lower member 6. When curing is complete, the die members &c. are opened and the article (as shown a roller) is pressed out of the die cavity. Thermometers may be inserted at 9. The apparatus is shown disposed between the anvils 1, 2 of a press, pressure being applied through loose studs 3, 4. The cage may be depressed by means of levers or a screw mechanism. The studs 3, 4 may be releasably secured both to the anvils of the press and to the members 5, 6 in which case opening of the press raises 5, 13, 14 and 17 to eject the article; subsequently the pins 15 may be removed, and further opening of the press will separate the cage parts. There may be more than one mould cavity. Hollow cylinders with or without a transverse flange or with holes in the wall may be moulded, the holes being formed by removable cores.
Patent GB-1073990-A (GB)
Title: Improvements in or relating to variable speed electric drives
IPC: H02P29/00
Filed: 1965-03-03
Abstract: 1,073,990. Clutch control. HEENAN & FROUDE Ltd. March 3, 1965 [March 5, 1964], No. 9140/65. Heading F2L. [Also in Divisions G3 and H2] An electromagnetic coupling is provided with a slip-ring having an interrupted margin which co-operates with brushes so as to provide pulses for use in a speed control system, the frequency of the pulses being indicative of the speed of the output member of the coupling. As shown, a fractional horse-power motor 1 drives an eddy current cup 13 which co-operates with a rotatable field member 34 having a winding 27 connected to slip-rings 63, 65. The member 34 is coupled to an output pulley 37. Brush 101 is supplied from a direct current power supply PS so that brush 111, co-operating with the interrupted margin 67 of slip-ring 65 provides pulses, indicative of the output speed, for use in control system 113 of the type described in Specification 1,059,752. The control system 113 supplies current pulses to the field winding 27, the duration of the pulses being such that the speed of pulley 37 is maintained constant.
Patent GB-1446256-A (GB)
Title: Printing apparatus
IPC: G07G1/06
Filed: 1974-02-28
Abstract: 1446256 Selective printing CARL VALENTIN GmbH 28 Feb 1974 [25 April 1973] 9158/74 Heading B6F A selective printer comprises a plurality of print wheels 17 which are set in selected position by a common drive rod 58 coupled to a rack 52 for each print wheel by a spring 68, the rod driving the rack 52 through the spring 68 until a stop pin 82 is engaged with a toothed wheel 46 meshing with the respective print wheel 17, the rod 58 then displacing the spring 68 to disconnect the rack 52 from the rod. The spring 68 comprises portions 74, 70, 68, 77, and is fixed to its respective rack at 76. The sloping portion 77 permits reengagement of the rod with the spring on return of the rod to initial position. Contacts 94 are energized according to the character to be selected, a pickup contact 96 being fixed to the rack 52 to energize electromagnets 84, 86, 88 when the selected character is in position. An impression hammer 42 is provided. A further set of print wheels (98, Fig. 2, not shown) may mesh with the toothed wheels 46.
Patent GB-1085660-A (GB)
Title: Improvements in can ends
Inventor: COOK JOHN EDWARD
IPC: B21D51/26
Filed: 1966-03-02
Abstract: 1,085,660. Can ends. METAL BOX CO. Ltd. March 2, 1966, No. 9177/66. Heading B8D. A can end made of tinplate includes a panel 1 having an opening (5). Fig. 1 (not shown), closed by a closure member 6 of soft metal such as alumi nium or an aluminium alloy, adhesively secured to the underside of the panel, and provided with score lines 11 after appli cation to the can end, defining a removable portion provided with a pull-tab 13 to effect removal thereof by tearing along the score lines. The can end may be provided with ribs 9. The adhesive may be a thermo-curing adhesive comprising an epoxy resin with a suitable plasticizer and hardener on a thermoplastic adhesive of the nylon type applied as a thin strip. The surfaces of the panel 1 and closure member 6 may be prelacquered with a vinyl-based lacquer.
Patent GB-789734-A (GB)
Title: A new or improved appliance for use in scribing sheets
Inventor: HOUSTON IAN HASTINGS
IPC: B44B3/00
Filed: 1954-03-30
Abstract: 789,734. Engraving. ALDRIDGE TOOL & ENGINEERING CO., Ltd. March 30, 1955 [March 30, 1954], No. 9228/54. Class 100(2) [Also in Group XXIII] An apparatus for use in scribing by making a fine incision on the surface of sheet material comprises a body carrying a plane faced backing member for the sheet the backing member being mounted for angular adjustment about an axis perpendicular to its plane face, an upwardly presented support on which a scribing member can be slidden in a direction perpendicular to the rotational axis of the backing member and adjustment means associated with an indicator to enable the backing member to be angularly set. As shown the body 10 is provided with an upwardly facing plane surface 40 having a network of shallow grooves on which a foot or pedestal of a scriber is supported and manually guided. A plate like member 12 having reinforcing ribs 13 is formed integrally with the body 10. The backing member 16 is releasably supported on a frame integral with a cylindrical housing 19 mounted in an opening in the plate 12 by means of a bearing ring and a retaining ring 21. Rotational adjustment of the housing 19 and associated frame is controlled by a spring loaded plunger 41 mounted in the plate 12 and projecting radially inwards to engage with one of a series of angularly spaced notches on the bearing ring. A scale 43 marked in degrees extends around the circumference of the housing, a datum mark and vernier scale being provided on the member 12. A fine adjustment comprises a worm which co-operates with a toothed quadrant mounted in an enlargement of the bearing opening and adapted to be secured to the bearing ring by a clamp 53, thereby enabling the ring either to be freed for rotation by hand or clamped to the quadrant when it is desired to effect fine adjustment. The backing member may be made of translucent material and illuminated by a light source in the housing or by providing a window in the member supporting the backing member and an external light source. In a modification the supporting surface for the scriber is mounted in guides on the body and is movable towards and away from the axis of rotation of the backing member.