baber/WOPTO huggingface dataset:
Patent GB-1166454-A (GB)
Title: Improved Method and Apparatus for Controlling the Thickness of Rolled Sheet Material
Inventor: WATKIN DAVID ANTHONY
IPC: A21C3/02
Filed: 1965-10-22
Abstract: 1,166,454. Rolling. BRITISH SCIENTIFIC INSTRUMENT RESEARCH ASSOCIATION. 21 Oct., 1966 [22 Oct., 1965], No. 44895/65. Heading B5A. [Also in Division G3] A device for controlling the thickness of a rolled sheet comprises a sensing means 32 which transmits a signal corresponding to the actual thickness of the sheet to a comparison means 38 where it is compared with a reference signal corresponding to the desired thickness of the sheet. The resultant error signal is fed through a cascaded delay circuit and linearizing filter 42 to a servomotor 40 which affords a primary control of the gap setting of rollers 36. Secondary control is afforded by intermittently modifying the signal from 32 by an error feed-back signal derived from a second sensing means 50, adapted to measure the final thickness of the sheet, and a comparison means 56. In the example shown in the Figures, a dough sheet is rolled by first passing through pairs of rollers 12, 20 and 28, have successively smaller roll gaps, the speed of which rollers is controlled according to the thickness sensing means 18, 24, and 32. The sheet is then rolled by variable gap rollers 36 controlled as described above and is finally conveyed to a take-off conveyer 48 upon which it falls as ripples. During normal operation the ripples, which give some indication of the final relaxation state of the sheet, subside before they pass under means 50. However in the event of their not subsiding the signal from 50 will include an A.C. noise component and this is removed by filter 54. If control of the ripples, and thus of the relaxation of the dough is desired, then the means 50 is sited over the ripples. The A.C. signal is stripped from the resultant signal from 50 and is passed to a decision box 72. When the A.C. signal is above a predetermined amplitude band, which signal is indicative of the ripples being too large, an intermittent signal is fed to speed control means 52 which increases the speed of the final conveyer 48 until the A.C. signal falls back into the desired amplitude band, this being indicative that the ripples have become smaller and lie within the desired range. If no intermittent signals are received by 52 then the speed of 48 is decreased incrementally thus increasing the height of the ripples until they again fall outside the desired range into which they are then brought again by the box 72. The desired intermittent operation of the feed-back signals to 54, and thus of the secondary control signal, and of the decision box 72 is afforded by linked switches 74, 76, only one of which can be open at any one time.
Patent GB-1365726-A (GB)
Title: Spherical bearings
IPC: F16C17/10
Filed: 1971-09-27
Abstract: 1365726 Bearings N LAING 27 Sept 1971 [25 Sept 1970] 44916/71 Heading F2A A bearing comprises two concave cups 1, 3 embracing a ball 2, the cups and ball all being relatively rotatable, and at least one cup 3 having its effective bearing area so disposed or constituted as to produce an asymmetric torque between that cup and the ball; the ball thus continuously varies its inclination, minimizing uneven wear. In Fig. 1, the central axis of the cup 3 is at an angle 7 to the axis of rotation 5 of the member to which the cup is attached, and the cup itself may be rotatably mounted around its central axis in a cylindrical bore in the member (Fig. 6, not shown). In further embodiments, the bearing area of one cup is asymmetrically constituted; this is achieved by providing asymmetrically arranged grooves, recesses, or apertures in the inner surface of the cup. The grooves may have a hydrodynamic function, or be filled with a material having a different friction coefficient from that of the remaining bearing surface; suitable material pairs include metals and metal carbides, graphite and synthetic resin, and babbitt-metal and synthetic resin bonded graphite. In a further embodiment (Fig. 2, not shown), the edge of the cup lies along a helical line.
Patent GB-972350-A (GB)
Title: Optical glass
IPC: C03C3/19
Filed: 1962-11-29
Abstract: An optical glass comprises components by weight:  (a) 12 to 38% boron orthophosphate; (b) metaphosphate chosen from 2 to 25% aluminium metaphosphate and 5 to 65% rare earth metal phosphate; (c) 20 to 80% alkaline earth metal phosphate chosen from pyrophosphate and orthophosphate; where (a) + (b) is not less than 20%.  In addition the oxides of the following metals may be added: up to 20% Mg, Ca, Sr, Ba, Zn, Cd, Pb; up to 6% Ti, W; up to 18% Sb, Bi; all calculated as oxides; and up to 33% As2O5.  The reare earth metal is preferably La and the alkaline earth metals for (c) are preferably Ba or Sr. The glass constituents are melted together in an oxidizing or neutral atmosphere. A number of examples are given.  Reference has been directed by the Comptroller to Specification 904,057.
Patent GB-1168887-A (GB)
Title: Showcase Construction
Inventor: DIACK ARTHUR GEORGE
IPC: A47B47/00
Filed: 1967-10-04
Abstract: 1,168,887. Cabinets; furniture joints. A. G. DIACK. 4 Oct., 1967, No. 45316/67. Headings A4B and A4H. In an upper comer joint 34 for a metal framed show case, prongs 98, 96 of a connector 94 are press-fitted in sockets in horizontal rails 28, 32 and in a post 24, and secured by screws 110, 114 each of which extends into a socket to engage a prong and bears against a rail or post. The corner joint 36 is similarly constructed and the lower corners each comprise an L-shaped connector screwed to the base 22 and having an upstanding lug plugged into the lower end of a socket in the posts. The posts and rails have plasticlined longitudinal channels 54, 58, 62 to receive the edges of glass panels, the channels being separated from the sockets by flanges through which some of the securing screws 110 pass. A slot, for passage of the screw, and a clamping member 112 (see Fig. 4) may be provided. Other securing screws (see Fig. 3) extend obliquely between the channels into a socket. A double channel is provided at the rear of the show case to receive sliding glass doors 88 supported on roller assemblies moving in tracks. The connector 94 is of unitary construction or, as shown, consists of an L-shaped member 98. secured in a groove 106 in the body of the connect- or by a screw. In further modifications the rails are each made of two sheet metal parts, e.g. stainless steel, welded together, or two show cases are secured, end to end, the corresponding side panels being omitted, by a member having flanges inserted in notches in filler strips disposed in the channels of the two abutted front and rear posts.
Patent GB-1525934-A (GB)
Title: Bladed rotor assemblies for turbomachines
IPC: F02C7/18
Filed: 1975-10-31
Abstract: 1525934 Gas turbine rotors GENERAL ELECTRIC Co 31 Oct 1975 [29 Nov 1974] 45428/75 Heading F1T An axial flow gas turbine rotor disc 28 contains an annular cavity 50 into which cooling air is pumped from chamber 42 by a vane assembly 84. The latter, which may be formed in arcuate segments abutting at 95, strengthens the disc 28 by providing axial support. Radial ribs 64 assist pumping of the cooling air outwardly through passages 56 and openings 60 into passages in the blades 62. Disc 28 may be formed as an integral member or as upstream and downstream disc parts 52, 54 secured together. Flanges 30, 32 on the disc are bolted at 46, 36 to shafts 40, 22 via respective strenghening discs 48.
Patent GB-1451366-A (GB)
Title: Liquid developer for and a method of developing an electrostatic  image
IPC: G03G9/12
Filed: 1973-09-28
Abstract: 1451366 Liquid developer AUSTRALIA DEPT OF MEG-INDUSTRY 28 Sept 1973 [4 Oct 1972] 45624/73 Heading G2H A liquid developer comprises, in separate co-existence within an insulating carrier liquid having a resistivity greater than 10<SP>10</SP> ohm.cm. and a dielectric constant less than 3, (a) toner particles having a dielectric constant of the same order of magnitude as the carrier liquid and (b) movement inducing particles constituted predominently of metal and having a relatively high dielectric constant capable of charge exchange with the surface containing a latent image to be developed and with surrounding particles, so that they move around within the developer causing agitation. The toner particles may be colouring medium coated with a resin. Examples of suitable mediums and resins are given. The particle (b) may be aluminium bronze, zinc, aluminium, nickel, copper, tin, iron, chromium or an intermetallic compound and may be resin coated to lower their effective dielectric constant. The developer is advantageously used to develop images on a photo-conductive surface that has been rendered more conductive by the inclusion in the surface layer thereof particulate conductive particles e.g. metal particles or another medium which increases conductivity. Examples of suitable photo-conductive surface are given.
Patent GB-1523467-A (GB)
Title: Rotary electric machines
IPC: H02K23/52
Filed: 1975-11-06
Abstract: 1523467 Motor/generator dynamo electric machines PLESSEY CO Ltd 2 Nov 1967 [6 Nov 1975] 46014/75 Heading H2A A dynamo-electric machine capable of operating as a motor or a generator includes on the stator a winding 23 which, when the machine operates in generator mode, forms the output winding which feeds output rectifiers 10, and when the machine operates as a motor forms a field compensating winding which neutralizes armature reaction. In motor mode, switches 20 are closed supplying the field windings 21, 22 of compound motor whose motor winding is not shown. As the speed increases centrifugal switches 18 are operated, and excitation D.C. is fed to the rotor winding. The supply to a solenoid 25 is removed causing brushes 8 to be lifted from the rotor. The machine now acts as a brushless alternator with the output stator winding 23 supplying D.C. via rectifiers 10.
Patent GB-1019670-A (GB)
Title: Process for making polyolefines antistatic
IPC: C08J7/044
Filed: 1962-12-06
Abstract: Polyolefines are made antistatic by surface treatment with or incorporation of 0.5-10% of one or more alkylene or polyalkylene glycol monoethers of formula R-O-(CxH2xO)n-H where R is a saturated or unsaturated branched or cyclic alkyl radical, x is 2, 3 or 4 and may be different in the same molecule and n is 1-3,000. The monoethers may be used in admixture with one or more ethylene, propylene or butylene glycols or their polyglycols having a degree of poly addition of 1-3,000 and/or mono- or di-ethers or esters thereof and/or compounds consisting of two or more alkylene and/or polyalkylene glycol chains combined by way of carboxylic, hydroxy- or di-carboxylic acids, or carbonic acid or hydrocarbon radicals (except C2- 4 saturated aliphatic hydrocarbon radicals), the terminal H of which may be replaced wholly or in part by hydrocarbon or acyl radicals.  The polyolefines may be derived from ethylene, propylene, a -butylene, butadiene styrene and may be copolymers thereof, e.g. styrene-butadiene and ethylenepropylene. A number of alkyl and cyclic alkyl radicals, R2 above, and also glycol ethers are listed.  In examples a treated ethylene-propylene copolymer also contained carbon black as filler, and a treated polybutadiene contained cyclohexyl - 2 - benzothiazylsulphenamide, sulphur, ZnO and carbon black before being vulcanized.  The treated polymers may be formed into sheets.
Patent GB-1158266-A (GB)
Title: Aryl Substituted Aliphatic Quaternary Compounds and Process
IPC: D06M15/17
Filed: 1966-10-17
Abstract: 1,158,266. Bitumen emulsion. ARMOUR & CO. 17 Oct., 1966 [21 Oct., 1965], No. 46361/66. Heading B1V. [Also in Divisions C2 and C3] Cationic bituminous emulsions comprise as emulsifiers compounds of the formula in which R 1  is an alkyl radical having 1-3 carbon atoms or a group CH 3 (CH 2 ) x -CHAr (CH 2 ) y -CH 2 -R 2  is an alkyl radical having 1-3 carbon atoms, -(CH 2 CH 2 O)pH or -CH(CH (CH 3 )CH 2 O)pH<SP>1</SP>, R 3  is an alkyl radical having' 1-3 carbon atoms, -(CH 2 CH 2 O)wH or -(CH (CH 3 )CH 2 O)wH, p and w are integers from 1 to 40 and the sum of p and w is less than 60, x and y are 0 or are integers from 1 to 19 and the sum of x and y is an integer from 8 to 19, A is an anion, n is 1 or 2 and AT an aryl group.
Patent GB-1182169-A (GB)
Title: Tobacco Smoke Filter.
Inventor: BAUM LEO
IPC: A24D3/04
Filed: 1967-10-11
Abstract: 1,182,169. Tobacco smoke filters. L. BAUM and D. W. WATKINS. 11 Oct., 1967, No. 46361/67. Heading A2C. A composite tobacco smoke filter 11 comprise an outer tubular jacket, which may be a paper or cork uniting band if attached to a cigarette 16, within which there is disposed between two sorptive filter means a filter section 13 comprising at least two spaced discoidal partitions 19 extending transversely across the composite filter axis, each of the partitions 19 having tubular smoke passages 21 extending therethrough in the generally axial direction of the filter 11, the passages 21 being from 0.029 to 0.038 inch in diameter and at least 0.03 inch in length, and successive partitions 19 being separated by from 0.01 to 0.03 inch and disposed to provide a staggered orientation of the smoke passages 21 through adjacent partitions 19. As shown, the partitions 19 are separated by a spacer 22. In another embodiment (Fig. 2) interficting cup-shaped members (24), having perforations (26) similar to the passages 21, are employed. As exemplified, filter sections 12, 15 comprise cellulose or cellulose acetate fibres, preferably impregnated with methyl cellulose, and filter section 14 contains activated charcoal.
Patent GB-983870-A (GB)
Title: Improvements in or relating to anaesthetising apparatus
Inventor: SUGG BASIL RAYMOND
IPC: A61M16/18
Filed: 1961-12-29
Abstract: 983,870. Anaesthetic vaporizers. LONGWORTH SCIENTIFIC INSTRUMENT CO. Ltd. Dec. 12, 1962 [Dec. 29, 1961], No. 46677/61. Heading A5T. An anaesthetic vaporizer comprises a dosage container 8 connected by valve means 16, 21, 27 between a storage reservoir 1 and a vaporizing chamber 14 in such a manner that only anaesthetic measured in the dosage container can reach the vaporizing chamber. A valve member 21 is rotatable in a vertical tube 16 which extends through the reservoir and the dosage container, which is transparent. In one position, the member connects the reservoir to atmosphere through a passage 22 in the member and an aperture 17 in the tube and, at the same time, permits liquid anaesthetic to flow from the reservoir into the dosage container through apertures 18, 19 in the tube and a slot 24 in the member. In a second position, the member closes communication between the reservoir and the dosage container and atmosphere and permits liquid to flow from the dosage container to the vaporizing chamber 14, a part of which is transparent, through an aperture 20 in the tube and a passage 25 in the member. Alternatively, the valve between the reservoir, dosage container and vaporizing chamber includes two parts (Fig. 5, not shown), urged apart by spring means into valve closing position, and an actuating rod which, when moved in one direction, moves one part against the spring to interconnect the reservoir and dosage container and, when moved in the opposite direction, moves the other part against the spring to interconnect the dosage container with the vaporizing chamber. A valve disc 27 in the vaporizing chamber is rotatable by a handle 29 and has two apertures 31, 32 which, in one position of the disc, permit liquid to flow from the dosage container into the vaporizing chamber and, in another position, register with apertures 37, 38 in a passage 35, through which respirable gas flows to the patient, the apertures 37 being disposed in a Venturi tube in the passage, so that vapour is drawn from the vaporizing chamber by gas flowing to the patient. A butterfly valve (Fig. 5, not shown) in the passage between the apertures 37, 38 is pivotal on the spindle 28 of the valve disc 27, so that its restricting effect is increased as the apertures in the disc and the passage are brought into full registry to permit maximum flow of anaesthetic vapour into the passage. The Venturi tube is exchangeable with others of a series, each having characteristics suited for a particular anaesthetic.
Patent GB-1488001-A (GB)
Title: Contact lenses
IPC: B24B13/00
Filed: 1973-10-06
Abstract: 1488001 Machining contact lenses GLOBAL VISION (UK) Ltd 3 Oct 1974 [6 Oct 1973] 46775/73 Heading B3T In a method of making a contact lens having two mutually curved lens surfaces 90, 91 the circumference edge 92 surface of the lens is machined after machining one of the curved surfaces but before the machining of the other of the two curved surfaces. A lens blank 10 is located in a rotatable support 11 and a first cutting tool 20 is traversed in an arcuate path about an axis transverse to the axis of rotation of the lens blank and support to machine one of the curved surfaces on the lens blank, e.g. the concave surface 90. Without removing the blank from the support a second tool 30 is moved into contact with the edge 92 of the lens to machine the peripheral edge. The machining of the edge at this stage in the manufacture of the lens provides additional rigidity of the material during machining by edging tool 30 and the avoidance of handling by removal of the blank from the support. The two aforsaid operations having been completed a further tool 40 is applied radially to the lens blank to reduce the diameter of the blank and form a frusto-conical surface 93 adjacent the edge. The lens blank is then removed from the support 11 and secured to a second support 61 by a thermoplastic adhesive 60. A microscope 62 mounted on the machine is then used to determine the position of the crown 63 of the first curved surface and a further cutting tool 70 then machines the second of the two curved surfaces. A lathe for machining the lens is shown diagrammatically in Fig. 10 and includes a chuck 101, carried by headstock 102, which supports the blank support 11, a pivotable tool carrier 103 with the cutting tool 20 and edge cutting tool 30 mounted thereon for successive operation by pivoting the carrier 103. Cross slides carrying tools 111, and 109 respectively for initial machining of the blank and chamfering the lens edge, and a microscope 62 for detecting the crown of the first curved surface 90 for use in detecting the accurate location of the second curved surface. Although the concave surfaces is shown as the first to be machined, the convex may alternatively be the first surface to be machined.
Patent GB-1057429-A (GB)
Title: Power transmission system
IPC: B61C7/00
Filed: 1964-11-18
Abstract: 1,057,429. Mounting radiators. C. SCHULERVOITH, M. VOITH, H. W. SCHWEPPENHAUSER, and C. KNAPP. Nov. 18, 1964 [Nov. 18, 1963], No. 46917/64. Heading B7H. [Also in Divisions F and F2] In a transmission system having a plurality of selectively filled and emptied hydrodynamic gears driven by separate engines, the liquid supply system is provided with a cooler common to all the hydrodynamic gears. The transmission is primarily intended for rail vehicles provided with a main engine and an auxiliary engine which can operate alone or together, each driving the driving wheels through one of the hydrodynamic gears. The auxiliary motor is also used to drive auxiliary units such as the dynamo, heat generator, or compressor. As shown in Fig. 2, an input shaft 20 is driven by the main engine of the locomotive and is geared to a shaft 25 fast with the impellers of torque converters 23, 24 which have a common turbine shaft 26 forming the input of a reverse gear 4 through which the locomotive driving wheels are driven. An auxiliary engine drives a shaft 27 geared to the impeller shaft 30 of a converter 31 having its turbine fast on the shaft 26. A centrifugal pump 39 and a gear pump 44 are respectively geared to the shafts 25, 30 and draw liquid from a common sump 47 which they supply through non-return valves 41, 46 to a pipe 11 and a cooler 10. The cooler supplies oil through a pipe 12 to a control unit 48 which selectively supplies pipes 50, 51, 52 leading to the torque converters or returns the oil to the sump 47. A branch pipe 53 supplies cooled oil for lubricating purposes. As shown, the cooler 10 is of the liquid cooled type, the cooling liquid being that of the engine coolant system, the coolant systems of the main and auxiliary engines being coupled in series or parallel and passing through the usual radiator (Fig. 1, not shown) and thence through a pipe 15 to the cooler 10. Alternatively the cooler 10 could be air cooled, the cooling air being provided by a separate fan. Fig. 3 (not shown) shows an arrangement having separate sumps 147a, 147b associated with the hydrodynamic gears for the main engine and the auxiliary engine, the sumps being interconnected by a pipe 167 and a pump 160 drawing liquid from the lower sump 147a and supplying it through a cooler 110 selectively to the hydrodynamic gears. A pump 169 circulates fluid from the lower sump 147a and supplies it to the higher sump 147b to maintain a suitable level of oil in the sumps. Both pumps 160, 169 are driven by a shaft 170 which is connected by bevel gearing and one-way clutches 162, 165 to the input shafts of the hydrodynamic gears.
Patent GB-1218689-A (GB)
Title: Light beam operated guard device for paper cutting machines
Inventor: TUPPACK JOACHIM
IPC: B26D7/22
Filed: 1969-09-24
Abstract: 1,218,689. Machinery safety devices. SCHNEIDEMASCHINENWERK PERFECTA VEB. 24 Sept., 1969, No. 46975/69. Heading F2J. A light beam operated safety device of a paper cutting machine comprises at least one photo-sensitive device 1, a relay 6 for controlling operation of the machine, a variable resistance 4 which limits the current through the relay winding to a value less than that required to cause the relay armature to be attracted, and a spring-loaded starter key 7 operable to render the resistance 4 ineffective. The current produced by illuminating the photo-sensitive device 1 is amplified by a preamplifier 2 and is applied to the input of a power amplifier 3. This current then passes through resistance 4 and relay 6 and is sufficient to maintain the relay armature attracted. When the light beam is broken the current flowing through relay 6 falls below the holding value, the relay 6 drops out and the contacts of the relay 6 open. A rectifier 5 is provided to shortcircuit the voltage induced in the relay winding when the relay 6 is de-energized. The machine may be started again by operation of starter key 7 provided that light is again incident on the photo-sensitive device 1.
Patent GB-1483297-A (GB)
Title: Organopolysiloxanes
IPC: C08G77/08
Filed: 1974-10-30
Abstract: 1483297 Bodying polysiloxane resins GENERAL ELECTRIC CO 30 Oct 1974 [2 Jan 1974] 47007/74 Heading C3T An organopolysiloxane containing silanol groups and 1-1À8 organo radicals per Si atom is bodied by contacting it, having no more than 5 p.p.m. of acid present, with a non-acidtreated diatomaceous in amount 0À75-20 wt. per cent of the siloxane at 200-250‹ C. and recovering a siloxane of increased viscosity. Up to 10 wt. per cent of solvent may be present. In the examples resins obtained by hydrolysing MeSiCl 3 , PhSiCl 3 , Me 2 SiCl 2  and Ph 2 SiCl 2  in the molar ratios 25 : 25 : 30 : 20 and 0 : 40 : 50 : 10 are heated with 1% of diatomaceous earth at 200-230‹ C.; 70% (xylene) solutions of the products are used as varnishes.