baber/WOPTO huggingface dataset:
Patent GB-1281209-A (GB)
Title: Production of light-conducting glass structures
IPC: C03C25/002
Filed: 1969-10-09
Abstract: 1281209 Light-conducting glass fibres; phosphate and silicate fibres NIPPON SELFOC KK 9 Oct 1969 [19 Oct 1968 12 Dec 1968] 49600/69 Headings C1A and C1M Light-conducting glass fibres, having a refractive index distribution such that in any crosssection perpendicular to the central axis of the fibre the refractive index varies continuously from the axis to the fibre surface, are produced by preparing a fibre having a vaporizable component dissolved uniformly therein, the component not being an essential constituent of the glass, and heating the fibre at below the glass deformation temperature for a time sufficient to cause a part of said component to vaporize from the fibre surface, thus causing the concentration of said component to decrease continuously from the centre axis towards the surface. The component, which may be included in the glass in an amount of 0À5-10% by weight, may be H 2 O, N 2 , CO 2 , O 2 , NH 3  or Noble Gas, in which case the refractive index decreases outwards from the axis, or SO 3 , in which case the index increases outwardly. Phosphate glasses comprising an oxide of Mg, Ba, Cd or Zn are particularly suitable. In the examples is disclosed fibres of (1) a zinc phosphate, (2) a barium phosphate, (4) a potassium silicate modified with argon, (5) a sulphate modified sodium silicate and (6) a sulphate modified lead silicate.
Patent GB-1281344-A (GB)
Title: Collapsible wheel chair
Inventor: BARRETT WALTER WILLIAM HENRY
IPC: A61G5/08
Filed: 1968-10-18
Abstract: 1281344 Collapsible perambulators W & F BARRETT Ltd 13 Oct 1969 [18 Oct 1968] 49637/68 Heading B7B A wheel chair has a pair of side frames each formed of members 24, 26 movable towards each other to collapse it and each side frame has a handle member 2 pivoted to it at 22 and carrying a fabric back rest. The handle 2 has an aperture engaged by the fixed pin 20 on a saddle member 28 to prevent its rotation in the sleeve 20 and an internal plunger 6 with a projection 14 engages an aperture 36 in the fixed plate 34 to prevent rotation about the pin 22 when the handle is in its operative position. Withdrawal of the projection 14 by the hand pin 10 allows the handle 2 to be moved to a position above and parallel to the member 26 with the hand pin vertically downwards.
Patent GB-1118232-A (GB)
Title: Fabric
IPC: D03D15/56
Filed: 1965-11-24
Abstract: 1,118,232. Finishing fabrics. DEERING MILLIKEN RESEARCH CORP. 24 Nov., 1965 [24 Nov., 1964], No. 49990/65. Heading D1S. A woven fabric web 1 is continuously compacted in the weft direction by apparatus comprising upper and lower belts 4, 5 simultaneously contacting the web 1 and a tenter clip assembly 9 on each side of the web-contacting portions of the belts 4; 5, the assemblies 9 being arranged to converge whereby the belts 4, 5 are continuously advanced from an expanded to a contracted state along the web-contacting faces. As shown, a fabric 1 containing keratinous fibres passes through a bath 2 containing a reducing agent, over a roll 3 and between the belts 4, 5 made of extensible polymeric material. Pins 6 to grip the fabric 1 are mounted on the outer face of the belt 4. The belts 4, 5 are driven by rolls 7, 8 and pass around idler rolls 12, 13 and the distances between the rolls are adjusted to tension the belts 4, 5. Each assembly 9 is driven by a roll 10 and passes around an idler roll 11. The compacted fabric is wound on a roll 14 and can be set by a decating operation to oxidise the reducing agent treated keratinous fibres. Other specified fabrics contain yarns of cellulosic fibres, e.g. cotton, or thermoplastic fibres or filaments, e.g. polyester or rayon. After compacting, fabrics containing cellulosic yarns are set by cross linking agents and fabrics containing thermoplastic yarns are heat set. The yarns may be high or low twist yarns but preferably the degree of twist is insufficient to produce internal compacting forces. The compacted fabric may have either a substantially flat surface or a texture surface, e.g. a pebble effect.
Patent GB-1468985-A (GB)
Title: Castors
IPC: B60B33/02
Filed: 1974-11-20
Abstract: 1468985 Castors HAPPE & CO 20 Nov 1974 [8 Dec 1973] 50303/74 Addition to 1396227 Heading A4U [Also in Division F2] In a castor similar to that described in the main Specification a brake lever 11 is pivoted at 10 and has brake areas 14, 15 for respective engagement with a fork mounting plate 3 and the castor wheel 5, the brake area 15 being on a splayed arm 16 and the areas being movable into braking engagement by a foot pedal 17 which is pivoted at 18 for movement between the nonbraking position shown and a depressed braking position, Fig. 2 (not shown), in which the arm 16 is moved away from the body of the lever, and a spring-loaded foot-actuated brake release lever (21) being pivoted at (20) on the pedal 17 for movement relative to the pedal 17 into engagement with the wheel 5 for raising the pedal 17 and so returning it to its nonbraking position. The lever 11 is adjustable by a screw 12 and is supported by a spring 25, and the pedal 17 is adjustable by screws (23) located in a plastics insert 24, the screws (23) being self tapped into the insert 24 to make lock-nuts superfluous. In a second embodiment, Figs. 6 and 7 (not shown), the spring biasing the brake release lever (21) acts to move the lever away from the pedal 17.
Patent GB-1324336-A (GB)
Title: Magnetic head for a tape recorder
IPC: G11B5/10
Filed: 1970-10-26
Abstract: 1324336 Magnetic head assemblies AKAI ELECTRIC CO Ltd 26 Oct 1970 [31 Oct 1969 5 Dec 1969 (2)] 50804/70 Heading G5R In a multi-element magnetic head assembly, polepiece pairs 9a, 10a, having transducing gaps 9g, 10g, are mounted together with a shield part 11a between each adjacent polepiece pair in a front holder 8 and are butted against corresponding U-shaped core parts 9b, 10b and shield parts 11b mounted in a rear holder 6. Slots 29, 30, which connect holes 25, 26, 27, 28 in which the feet of the core parts 9b, 10b are mounted, serve to prevent the presence of closed loop, eddy current, paths around the feet.
Patent GB-1082960-A (GB)
Title: System for a.c. operation of an ionization chamber
IPC: G01T1/185
Filed: 1964-12-15
Abstract: 1,082,960. Valve frequency-selective amplifying circuits. JAPAN ATOMIC ENERGY RESEARCH INSTITUTE. Dec. 15, 1964 [Dec. 23, 1963], No. 51110/64. Heading H3W. [Also in Division G1] A band-pass filter comprises a pentode amplifier with a parallel-T feedback connection between the anode and the control grid.
Patent GB-1294441-A (GB)
Title: Aqueous solution of molybdenum and cobalt compounds
IPC: C01G39/00
Filed: 1968-10-29
Abstract: 1294441 A Mo-Co solution W R GRACE & CO 29 Oct 1968 [22 Nov 1967] 51190/68 Heading C1A [Also in Divisions B1 and C5] A Mo-Co solution having a Mo concentration of 0À14 to 0À19 g./ml. and a Mo-Co weight ratio of about 4 is produced by: (a) maintaining an ammoniacal solution of MoO 3  having a Mo concentration of 0À15 to 0À25 gm./ml. at 70‹ to 155‹ F., (b) mixing Co(NO 3 ) 2  therewith to provide a slurry of Mo/Co weight ratio of about 4; (c) bubbling anhydrous NH 3  into said slurry until the solids dissolve. In step (a) anhydrous NH 3  may be bubbled through a MoO 3  slurry or MoO 3  may be dissolved in aqueous NH 4 OH. The product solution may be used to impregnate a refractory oxide to give a hydrodesulphurization catalyst for petroleum.
Patent GB-1407050-A (GB)
Title: Pneumatic tyres benzodiazepine derivatives
IPC: B60C11/04
Filed: 1972-11-08
Abstract: 1407050 Pneumatic tyres MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 8 Nov 1972 [8 Nov 1971] 51611/72 Heading B7C A radial ply pneumatic tyre comprises a tread 1 having in a central region 10 at least one circumferential zig-zag rib 15 and in each of the two side regions 11 a continuous circumferential zig-zag rib 21 from the axially outer side of which extend transverse blocks 23, 24, blocks 23 alternating circumferentially with, and extending axially outwardly further than, blocks 24. The transverse grooves 25, 26 have a width at all depths of the tread greater than the corresponding widths of the circumferential grooves 12, 13 defined by the ribs, and also the sidewalls of the circumferential grooves 12, 13 are steeper than the sidewalls of the transverse grooves. The ground contacting area of the tread in the side regions 11 is greater than that in the central region. The transverse grooves 25, 26 are deeper than the circumferential grooves 12, and the central groove 13, which is narrower than grooves 12, has a groove 14 in its base from which a slit 16 extends radially inwardly. The blocks 23 extend beyond blocks 24 by substantially half the width of the ribs 15.
Patent GB-1217030-A (GB)
Title: Improvements in screwdrivers
IPC: B25G1/10
Filed: 1968-10-31
Abstract: 1,217,030. Hand-tool handles. STEPHAN WITTE & CO. 31 Oct., 1968 [21 Feb., 1968], No. 51675/68. Heading B4K. The rear major portion 3 of the handle of a screwdriver has a substantially triangular cross-section (Fig. 6) to facilitate hand-grip. The apices 8 may be flattened as shown. Extending from the portion 3 towards the shank are further portions 4, 5 of circular crosssection, which taper slightly towards their common juncture. The sides of the portion 3 may be slightly convex, and that portion may taper slightly towards the free end of the handle. The portion 3 may be provided with areas 10 of shallow grooves 11, or short, slightly curved grooves (12) (Fig. 7, not shown). In another embodiment (Figs. 1-3, not shown), the forward portion 5 is formed with recesses 6, and the apices 8 are rounded.
Patent GB-1325898-A (GB)
Title: Apparatus for recording ultrasonic examinations
IPC: G01N29/06
Filed: 1970-10-30
Abstract: 1325898 Ultrasonic testing BABCOCK & WILCOX Ltd 30 Oct 1970 [30 Oct 1969] 51709/70 Heading H4D [Also in Division G1] A zone of a cylindrical workpiece (specifically a pipe) 1 (Fig. 1) is scanned over a helical path by means of an ultrasonic probe 2 connected via slip-rings 49 to an ultrasonic transmitterreceiver (producing discrete pulses of ultrasonic frequency electric waves) received reflected energy being employed to energize one or both of marker devices 44 co-acting with a dry or electrosensitive recording chart 43 carried by a drum 43 the rotary and axial motion of which follows that of the probe 2. In operation, water coupling between the pipe and the probe is employed and the receiver circuitry is gated to exclude echoes other than those originating within the interior of the wall of the pipe. Additionally, the circuitry operates to energize one of the markers 44 when the echo amplitude exceeds a predetermined higher value and to energize the other of the markers 44 when the echo amplitude exceeds a predetermined lever value so that the seriousness of the flaw causing the echoes is determined by whether one or both markers respond and this fact is signalled (monitored) to the operator by the illumination of one or both of lamps 48 connected in parallel with the respective markers. In order to prevent overlap of marks the spacing of the two markers 44 is made less than the pitch of the path of the probe 2. Motion of the probe is effected by means of a continuous drive motor connected via a flexible drive cable 34 and reduction gear 35 to a worm 30 driving a worm-wheel 25 which drives a shaft 26 coupled to shaft 3, an upper portion 27 of the shaft 26 being provided with a threaded section which coacts with a tapped nut 28 (also Fig. 2, not shown) to provide the axial movement of the probe. The worm 30 is so mounted that rotation of a pin 32 by means of a hand wheel (not shown) mounted below the base-plate 12 operates via an eccentric device to disengage the worm and worm-wheel and to facilitate removing or replacing the recording chart 43 the markers may be disengaged by rotations of the turntable 46. The complete unit is mounted on a supporting member 13 provided with three (only two shown) equally spaced radial arms 15 which may be adjusted by key means to centre the unit on an apertured plate 8 forming part of a tripod 6 the legs 9 of which carry feet 10 resting on the rim of the pipe. Instead of employing the tripod the complete unit may be mounted directly on the pipe by means of the radial arms 15 when the pipe diameter is suitable.
Patent GB-1141656-A (GB)
Title: Method of rolling zinc or zinc base alloy ingots
IPC: B21B27/06
Filed: 1967-11-14
Abstract: 1,141,656. Rolling ingots. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. 14 Nov., 1967 [14 Nov., 1966], No. 51728/67. Heading B3A. An ingot of zinc or zinc base alloy is reduced to less than 40% of its initial thickness by rolling the ingot at an initial absolute temperature of from 65-80% of the absolute melting temperature of the zinc or alloy. The initial temperature is advantageously 453-553‹ K. (180- 280‹ C.), and the rolls which reduce the ingot are cooled only on their exit side to minimize cooling of the ingot.
Patent GB-1389430-A (GB)
Title: Process for continuous casting of metal bars
IPC: C21C7/00
Filed: 1972-11-09
Abstract: 1389430 Continuous casting DALMINE SpA 9 Nov 1972 [13 Nov 1971] 51764/72 Heading B3F An inert gas, e.g. Ar, is passed down into molten metal in a vertical mould through a vertical pipe of substantially the same composition as the metal, e.g. steel, as it is continuously cast, the pipe being continuously fed into the metal (as from a roll) as its end melts. The cooling by the pipe metal and gas, aided by stirring by the gas shortens the liquid core, is said to reduce porosity at the centre of the resultant casting. In order that the pipe may be introduced centrally, the inflowing molten metal is passed into the mould as a jet or jets offset from the central axis.
Patent GB-1528969-A (GB)
Title: Multiple filter press diaphragm former
IPC: C25B1/46
Filed: 1975-12-22
Abstract: 1528969 Moulding diaphragms BASF WYANDOTTE CORP 22 Dec 1975 [23 Dec 1974] 52302/75 Heading B5A Apparatus for the production of diaphragms, e.g. of asbestos for filter press cells, comprises a sealed housing 12 containing a stack of diaphragm-forming modules, each comprising a chamber 30, Fig. 3, receiving slurry from a pipe 38, a screen 26 receiving the slurry from the apertured base of the chamber, and a vacuum box 20 with an outlet 44. The chamber 30, screen 26, a gasket 24 and the box are in abutment, and gaskets 50 on the door 14, when closed, engage the gaskets 24. Such apparatus may produce a number of diaphragms simultaneously. In the modification of Fig. 5 each diaphragm is produced in stages in which it is moved on its screen within a sealed housing 110 from a station 112 to stations 114 and 116. At station 112 slurry is supplied to a screen and subjected to vacuum by a chamber 130; at station 114 a higher vacuum is applied to the diaphragm on its screen by a chamber 186 and at station 116 the diaphragm is dried by a vacuum applied by a chamber 140.
Patent GB-1532648-A (GB)
Title: Apparatus and methods for making cables
IPC: H01B13/10
Filed: 1975-12-22
Abstract: 1532648 Wrapping high tension cables KABELWERKE BRUGG AG SOC D'EXPLOITATION DES CABLES ELECTRIQUES (SYSTEME BERTHOUD BOREL & CIE) SA and SOC ANON DES CABLERIES ET TREFILERIES DE COSSONAY 22 Dec 1975 [16 Jan 1975] 52432/75 Heading B8G [Also in Division H1] A method of producing high tension cables having gas, oil or wax impregnated insulation made up of tapes (paper or plastics) running parallel to the conductor and a sheath surrounding the insulation comprises moving the conductor 2 through a bath 5 1  of impregnant, feeding one or more tapes 9 to a guide or guides 8 which curve each tape transversly and apply it to the conductor beneath the level of the impregnant to form an insulation layer, feeding the conductor with the applied layer through a cylindrical gauge 10, applying a further tape or tapes via further guides 8 at positions circumferentially offset from the positions of the tapes in the previous layer, passing the conductor through a further gauge 10 and repeating these operations until the desired thickness of insulation is attained. The baths 5 and braked reels 6 for the tapes 9 are contained in a sealed chamber 11. A wrapping device 14, applies conducting tape on to the insulation to form a screen 16 and a lead press 17 applies a lead sheath thereover. Semiconducting tapes may be applied at the beginning and end of the insulation applying operation. The insulating tapes are applied under a tension such that their extension is proportional to their radial distance from the axis of the cable and the extension in the outermost layer is less than half the extension at which the tapes loses elasticity. The tapes may be of polyolefin and be subjected to chemical or irradiation action to reticulate their molecular structure.
Patent GB-1163263-A (GB)
Title: Improvements relating to Wheel Chairs
Inventor: BICKERSTAFF JAMES HENRY
IPC: A47C31/06
Filed: 1966-02-26
Abstract: 1,163,263. Folding wheel chairs. TAN SAD Ltd. 20 Feb., 1967 [26 Feb., 1966; 24 Nov., 1966], Nos. 8565/66 and 52545/66. Heading B7B. A folding wheel chair comprises a folding tubular steel framework having a pair of side frames 12; 13 connected together by canvas bands 16 and 17, wherein the seat (as shown), or the back rest, comprises a resilient or upholstered cushion (not shown) supported resiliently upon a removable sub-frame 20-23 which is supported on lugs or abutments (not shown) on the framework to hold the chair erected, or is removed from the chair to enable the chair to be folded. In an embodiment, the cushion is resiliently supported on the sub-frame 20-23 by spaced parallel textile-rubber bands 25 held in tension and anchored to the tubes 20, 21 by wire loops 28. The spacing of the bands decreases to the rear, 23, of the sub-frame. In another embodiment, the cushion is resiliently supported on the sub-frame 20-23 by a tensioned reinforced rubber square panel (as described in Specification 1,036,877) secured at its corners by wire elements moulded thereinto, to nut and bolt assemblies on the tubes 20, 21, the panel having a relatively thin circular central area.
Patent GB-1020330-A (GB)
Title: Shoe with fabric foxing and fabric sole
IPC: A43B15/00
Filed: 1964-12-30
Abstract: 1,020,330. Boots &c. TSUKIHOSHI GOMU KABUSHIKI KAISHA. Dec. 30, 1964 [Jan. 20, 1964], No. 52889/64. Heading A3B. A shoe consists of an upper 1 lasted to an insole 2, bottom filling 3, a rubber sole 4, a fabric sole 5, a rubber foxing strip a secured to the upper, the edge of the sole and to the under face of the sole, and a fabric foxing strip 6 secured to the rubber foxing strip a. The fabric of the sole and foxing strip may be made by knitting or weaving cords of hemp.
Patent GB-1084780-A (GB)
Title: Method of producing yeast-fermented bakery products
IPC: A21D8/04
Filed: 1964-12-31
Abstract: Yeast-leavened bakery products are made with the aid of liquid yeast which yeast, from the time it is separated by centrifuging and during its transportation and storage until it is directly admixed with dough, is kept in a thermally insulated container substantially sealed off from the outside atmosphere and within a temperature range of from 0 DEG  to 8 DEG C.  A refrigerated vehicle is used for transportation of the yeast.
Patent GB-1534529-A (GB)
Title: Method for scanning a surface
IPC: H04N1/191
Filed: 1975-12-30
Abstract: 1534529 Facsimile systems XEROX CORP 30 Dec 1975 53117/75 Heading H4F [Also in Division G2 and G3] A method of scanning a surface, comprises causing a plurality of scanning heads 10, Fig. 2, to move relative to a surface 12 so as to trace-out a plurality of spaced parallel scanning paths, and successively repeating the scanning movement while causing a continuous slower relative movement between the scanning heads and the surface in a direction substantially perpendicular to the scanning paths whereby an interlaced scan is produced. The following conditions are satisfied for N scanning heads spaced apart by M line pitches, the heads 10 being advanced by S line pitches during each scan of the surface: N = S and KS # LM where K is any integer and L is an integer less than N. The scanning heads 10 may be mounted on a member 11 for motion parallel with the axis of a drum bearing the surface 12. Alternatively, the light from a plurality of sources 23, Fig. 4, can be scanned across a cylindrical surface 14 or a planar surface 15 by a polygonal scanner 25, surfaces 14, 15 moving in directions 16, 17 respectively. The light is either modulated before reaching surface 14 or 15 in accordance with information to be reproduced, or modulated by reflection from information on the surface which is to be read. The apparatus may be capable of operation either at a transmitter or as a receiver. The data from the separate scanning heads may be transmitted in series or in parallel and bandwidth compression may be achieved by run length encoding.
Patent GB-1276026-A (GB)
Title: Electrical switch components and switches formed thereby
Inventor: ROESER JOHN OTTO
IPC: H01H13/28
Filed: 1969-10-31
Abstract: 1276026 Snap-action and retractive switches J O ROESER 31 Oct 1969 [25 Nov 1968] 53546/69 Heading H1N In a snap-action switch each movable contact 109a, Fig. 5, comprises a pair of spaced legs 112, 114, Fig. 8, pivotable on knife edges 132 and having a pair of upper and lower contact regions 128, 130 formed by curving the end 118 of the contact to a part-cylindrical form. A centre portion of the cylindrical end 118 has a stamped out recessed portion 124 on which the end of the snap-action tension coil spring 120 is hooked at a point which is at a greater distance from the pivot edge 132 of the blade than that of the contact regions 128, 130 whereby the vertical component of the spring force has a mechanical advantage in applying contact pressure and thereby reduces contact bounce. In the example described a pair of blades 109a, 109b is arranged in grooves 106 on opposite sides of a rectilinearly moving and conductive actuator part 96 moulded on a push-button 14 and engaging a pair of return springs 76, 78 resting on a central terminal 174. One spring 76 may be of stainless steel for mechanical strength and the other spring 78 may be of a silver-magnesium, nickel alloy or beryllium-copper alloy to provide a current carrying capacity. The fixed upper and lower contacts 146, 148, 156 are mounted in slots such as 50a, 50b in the casing 42 and sealed by potting compound 198. Each contact may be formed integral with a terminal 158 and bent up from a stamped out bimetal plate having a layer 162 of silver with a brass backing 164 which may be silver coated. The mounting of the lower terminal 174 is described and claimed in the Specification 1,276,027 of the divided application. In a modification the actuator may operate more than one pair of contacts and may have push-pull actuation, the return springs 76, 78 being omitted. The contacts may operate simultaneously and the push-button may be resiliently coupled to the central actuator 96 by means of a rubber ring (236), Fig. 16 (not shown), whereby energy stored during initial compression of the ring (236) is released on actuation of one set of contacts to ensure the simultaneous action of the other set. A further embodiment, Fig. 20 (not shown) is described in which the fixed contacts are staggered at different distances apart, whereby a sequential actuation of different sets of movable contacts is obtained due to the contacts going over centre at different stages of movement of the actuator.