baber/WOPTO huggingface dataset:
Patent GB-1169869-A (GB)
Title: Magnetic Transducer
IPC: G11B5/31
Filed: 1968-09-04
Abstract: 1,169,869. Magnetic heads. NATIONAL CASH REGISTER CO. 4 Sept., 1968 [18 Sept., 1967], No. 42022/68. Heading G5R. A magnetic transducer comprises a generally flat spiral coil 36 located between plates 30, 44 of magnetic material and supported on a non- magnetic substrate 24. Two or more such transducers may be formed on opposite sides of the substrate to form a read/write unit and possibly for multitrack tape. The conductors and plates are formed by deposition using photoresist techniques employing tantalum and gold as working materials and copper and permalloy as operational layers. Insulation is formed by sputtered glass but that covering the plates may be omitted if ferrite cores are employed. A, glass substrate 24 is etched and the first plate 30 deposited in the recess formed. The layer is ground to the plane of the glass and the whole surface glass-sputtered before deposition of a spiral copper conductor 36. The coil is glasssputtered and the second plate 44 deposited with the back ends 52 in contact or not as desired. The assembly may be encapsulated. The winding may be built up by successive deposition of series-connected single turn coil (Figs. 11-15, not shown), and a bifilar winding may be formed by deposition of a second coils interlaced with the first (Figs. 3-9, not shown), while the pole portions of the plates may lie in a different plane to that of the coils and bulk of the plates (Fig. 10, not shown).
Patent GB-1406313-A (GB)
Title: Mechanical computer for phtotographic processes
IPC: G03B27/16
Filed: 1972-09-11
Abstract: 1406313 Photographic process calculators CHESLEY F CARLSON CO 11 Sept 1972 [10 Sept 1971] 42099/72 Heading G4B A device, for performing calculations involving density values used in photographic continuous tone or half tone processes, includes a rotatable dial 14 bearing a scale of density values adjacent its periphery, and fixed and movable pointers 39, 125 adjacent the dial periphery, the angular position of the movable pointer round the dial periphery being adjustable. As shown, another scale of density values partially surrounds the dial. The dial is rotatable by means of a knob 18 bearing a further reference line 40. A slipping clutch permits relative rotation between the knob and the dial. In a preferred use, a value is computed by simple additions and subtractions of shadow and highlight densities and density values of the material to be reproduced and a screen to be used in a half tone process. The device may be combined with photographic apparatus and the computed value used to automatically control the exposure time of a lamp. Other embodiments of the device, Figs. 1-4 (not shown), comprise the apparatus disclosed in Specification 1,361,022 with the addition of suitable fixed and movable pointers.
Patent GB-1242424-A (GB)
Title: A muffle for nitriding metal particles at elevated temperatures
IPC: B01J19/00
Filed: 1968-09-05
Abstract: 1,242,424. Muffles. AVESTA JERNVERKS A.B. 5 Sept., 1968 [11 Sept., 1967], No. 42240/68. Heading F4B. [Also in Division C7] A device for use in nitriding at high temperatures metals in the form of flakes or shell grains, comprises a vertical metal stand (8, Fig. 1) provided with a number of rounded metal discs 9, spaced vertically from one another. On charging the apparatus 1, vacant spaces 11 are formed beneath the discs 9, such that at reaction temperature, the material expands and substantially fills the said spaces 11.
Patent GB-1487825-A (GB)
Title: Production of composite containers
IPC: B65D5/20
Filed: 1974-11-25
Abstract: 1487825 Moulding containers AIRFIX INDUSTRIES Ltd 25 Nov 1974 [7 Sept 1973] 42299/73 Heading B5A [Also in Division B8] A container is produced from a blank coinprising a polygonal base panel with wall panels integral with each edge of the base panel, and in which recesses are formed in the base panel between the junctions of the base panel and each pair of wall panel free edges; the blank being placed in a mould cavity which is the shape of the required container, and synthetic plastics material being injected into the vacant regions of the cavity through separate corner pin gates, whereby a container is formed in which all the edges of the blank are sealed by injected plastics material. The injected material may also produce a lip along the upper edges of the walls of the container.
Patent GB-1512304-A (GB)
Title: Load responsive pump controls of a fluid system
IPC: F15B13/04
Filed: 1976-10-12
Abstract: 1512304 Fluid-pressure servomotor systems CATERPILLAR TRACTOR CO 12 Oct 1976 [23 Feb 1976] 42327/76 Heading G3P A fluid system of a work vehicle comprises a prime mover 14 driving a pilot pump 16, and a plurality of circuits each having a variabledisplacement pump 18, 20 driven by the prime mover and connected to a work element 30, 32 via a control valve 38, 40 positioned by pilot pressure under the control of a pilot valve 50, 52, means 62, 62' in each circuit responsive to the discharge pressure of the respective pumps (in lines 77, 79) acting in opposition to a biasing force (springs 82, 82') and the load pressures of the working elements (in lines 60, 60') for modifying the pilot pressure to produce signals X, X', and a single means 88 responsive to the discharge pressures of all of the pumps opposed by a biasing force for modifying the pilot pressure to produce a signal Y, the signals X, X' and Y being used to control the pumps. The signals are passed to respective means 102, 102 which produce signals Z, Z' equal to whichever signal of each pair X, Y or X', Y is the greater, the signals Z, Z' controlling servovalves 86, 86' of swash-plates 84, 84'.
Patent GB-952167-A (GB)
Title: Improvements in or relating to closure members for drums or other containers
IPC: B65D45/02
Filed: 1959-12-15
Abstract: 952,167. Container closures. LONDON CONTAINERS & NOAKES Ltd., and J. K. NOAKES. Nov. 7, 1960 [Dec. 15, 1959], No. 42641/59. Heading B8T. A closure for sealing the neck of a drum or other container comprises a disc 21 having a tapered portion for sealing engagement with the neck or with a hollow member 15 located within the neck, and a separately rotatable cap ring 19 which screws on to the neck and bears on the disc 21 to force the tapered portion into the neck, the disc and cap ring interfitting with each other to restrain them from separation when disengaged from the neck by the interengagement of lip 26 and projection 24 on the disc and depending wall 31 on the cap ring. To dispense the contents of the container, the cap and disc are removed and the member 15 reversed to act as a pourer spout and clamped in position by ring 19. The container may be resealed without the use of member 15 by placing disc 21 with its peripheral ridge 25 in the groove 14 and securing it in position with ring 19. The member 15, cap ring and disc are preferably made from a synthetic resin. According to the Provisional Specification the lower end of member 15 may be closed by a diaphragm.
Patent GB-996129-A (GB)
Title: Improvements in or relating to printing
IPC: G06K15/04
Filed: 1962-11-12
Abstract: 996,129. Clutch control. TELEREGISTER CORPORATION. Nov. 12, 1962 [Nov. 20, 1961 (3)], No. 42653/62. Heading F2L. [Also in Divisions B6 and G4] The control shafts 15, 16 of a printer, one driving the selector mechanism and the othor driving the printing impression mechanism, are coupled to an electric motor 13 by two wrap-round spring clutches 42, 51 having one end of the spring attached to the driven member of the clutch. Both clutch controls are identical but arranged in reverse order. As shown in Fig. 7, control arm 59 is rocked to clutch releasing position (dashed lines, Fig. 7) by a spring 62 and the clutch is engaged by operation of electromagnet 63. An interlock bar 66, Fig. 8, is provided to prevent one clutch operating if the other is already doing so. After one complete revolution of the driven member, shafts 15 or 16, the free end 61 or 61<SP>1</SP> of the springs 48 or 54 engages arm 59 or 59<SP>1</SP> so that further rotation of the driving members tends to unwind the springs to prevent friction on the disengaged state of the clutches.
Patent GB-1046610-A (GB)
Title: Process for the production of 4-alkylmercaptophenols
Filed: 1965-10-07
Abstract: A 4-(alkylthio)phenol is produced by contacting a mixture of a dialkyl sulphide and a phenol with Cl2, separating the 4-hydroxyphenyl dialkylsulphonium chloride so formed and heating to obtain the desired product.  The production of 4-(methylthio)phenol is exemplified.  Reference has been directed by the Comptroller to Specification 987,810.
Patent GB-1165542-A (GB)
Title: Improvements in or relating to Respiratory Apparatus.
IPC: A61M16/00
Filed: 1966-09-26
Abstract: 1,165,542. Artificial respiration apparatus. CHIRANA ZAVODY ZORAVOTNICKEJ TECHNIKY OBOROVY PODNIK. 26 Sept., 1966 [27 Sept., 1965], No. 42831/66. Heading A5T. Artificial respiration apparatus comprises a mixing chamber 17 connected by a' conduit 18 to a source of pressurised respiratory gas and through a pneumatic resistance 19 to atmosphere, a conduit 5 connecting the mixing chamber to .the communication chamber 3 of a diaphragm-operated valve 21, a respiratory mask 9 communicating with the mixing chamber and the conduit 5 and a conduit 10 connecting the control chamber 2 of the valve 21 with either the mixing chamber 17 or the gas supply .conduit 18, the diaphragm 1 of the valve 21 being movable, by pressure differentials between the conduit 5 and the control chamber 2 of the valve, into a position in contact with a seat 20 to close the conduit 5 from the communication chamber 3 for inhalation or a position spaced from the seat 20 to open the conduit 5 to atmosphere via the communication chamber for exhalation. Pressurised gas is supplied to the mixing chamber through a nozzle 8, atmospheric air being drawn into the mixing chamber through a pneumatic resistor 19 and the mixture being ejected through a nozzle 7. With the diaphragm in contact with the seat 20, the mixture passes to the mask 9 to induce inhalation when a predetermined maximum pressure is reached in the conduit 5, the diaphragm moves away from the seat 20 and the mixture ejected through the nozzle 7 passes through the conduit 5, communication chamber 3 and an adjustable pneumatic resistor 16 to atmosphere and draws gas from the mask and lungs to induce exhalation. In a modification, the control chamber (2a Figure 2) of the diaphragm-operated valve (21a) is controlled by two additional diaphragm-operated valves (21b, 21c) in response to pressures in the conduit (5a) which is connected by a conduit (13) with the control chamber (2b) of one additional valve. The additional valves are connected in branches of the conduit 10 and are changed over in response to pressures in the conduit (5a) to assist in terminating the inhalation and exhalation phases of the apparatus.  If the patient makes a spontaneous inhalation, the change in pressure in the conduit 5, (5a) causes the diaphragm to be maintained in, or change over to, the inhalation position.
Patent GB-1322239-A (GB)
Title: Method and apparatus for effecting sequential chemical reactions
IPC: B01J8/20
Filed: 1970-09-08
Abstract: 1322239 Solid/liquid contact; polymerization apparatus SNAM PROGETTI SpA 8 Sept 1970 [8 Sept 1969] 43026/70 Headings B1F and B1X A method for producing sequential polymers, e.g. polypeptides, comprises binding first molecules each containing two or more reactive functional groups by one or more, but not all, of their functional groups to a solid support retained, during the reaction, in a fixed. motionless reaction zone, reacting the unbound functional groups of the first molecules with one or more, but not all, of two or more functional groups of second molecules, reacting the unbound functional groups of the second molecules with subsequent molecules in a similar manner, and containing this reaction sequence with selected molecules until the desired sequential reaction has been effected, the first, second and subsequent molecules being introduced sequentially into the reaction zone and being subjected to agitation therein, there being no moving mechanical members in the reaction zone. In the embodiment of Fig. 1, the solid support in the form of a resin is held in reactor 4, and reactant is fed in turn through pipe 1 for each sequential reaction, and afterwards discharged through 11, agitation in reactor 4 being effected by forcing the reactant down through porous member 15 into chamber 5 by gas pressure and then back up through porous member 5 into reactor 4 as many times as is required.
Patent GB-1328567-A (GB)
Title: Digital electric signal conversion using a conversion table citcuit
IPC: G09G5/36
Filed: 1970-09-09
Abstract: 1328567 Conversion device KOKUSAI DENSHIN DENWA KK 9 Sept 1970 [12 Sept 1969] 43077/70 Heading G4A An apparatus is provided for converting digital signals representing one pair of values (e.g. cartesian co-ordinates) to at least one other value (e.g. polar co-ordinates) using a look-up conversion table. This is modified so that the size of the conversion table may be reduced, and can be applied to other co-ordinate conversions e.g. rectangular hyperbolic, parabolic or eliptic co-ordinates. Input cartesian signals x, y are converted to output polar signals 0, A where 0 = tan <SP>-1</SP>x/y and A = #x<SP>2</SP> + y<SP>2</SP>. Tan <SP>-1</SP>x/y varies over the range 0 to # with positive and negative values (Fig. 4A, not shown) depending on the sign of x and y, but a signal converter 1 removes the signs to give x 0 , y 0  and sends sign signal B to a modifier 5. This reduces the range of # by half (Fig. 4B, not shown). The signals x 0  y 0  pass to an exchange circuit 2 including a comparator whereby the smaller of the two signals x 0  y 0  goes to x a  and the larger to y a , modifier 5 being informed of any change by signal C. This effectively reduces the range of # by half again (Fig. 4C, not shown) since tan <SP>-1</SP>x/y = #/2- tan <SP>-1</SP>y/x. The outputs x a , y a  pass to a shift circuit 3 (two embodiments, Figs. 3A, 3B not shown). The numbers x a , y a  are shifted in the direction of the most significant digit until one or both of the respective digits becomes a one, the numbers of shifts being counted and sent to modifier 5. This further reduces the range of 0 by excluding combinations of x/y where the highest significant digit of both x and y is zero. Rounding off of fractions is also mentioned. x b , y b  are passed to the conversion table which holds values corresponding to area C (Fig. 5, not shown). The results # a , A a  pass through the modifier 5 to the output 0, A. A conversion is carried out in the reverse direction in a similar manner (Fig. 6, not shown) and the apparatus may be applied to data processing.
Patent GB-1395718-A (GB)
Title: Printed circuits
IPC: G03F1/90
Filed: 1971-09-16
Abstract: 1395718 Photomask EXACTA CIRCUITS Ltd 15 Sept 1972 [16 Sept 1971] 43275/71 Heading G2X [Also in Division H1] An artwork for use in producing a printed circuit comprises a pattern of pads 5 in a colour which is visible to a human operator but invisible to a photo-sensitive medium and a pattern of superposed tracks 10 of a colour visible to both the operator and the photo-sensitive medium. An image of the artwork is superimposed upon a printed circuit board already bearing a pattern of pads to enable tracks to be produced making the required contacts and isolations. The image of the artwork is reduced in size to match that of the board. The invisible colour may be blue, the visible colour black.
Patent GB-1240355-A (GB)
Title: Multi-metallic rail device and process
IPC: B60M1/30
Filed: 1968-09-11
Abstract: 1,240,355. Conductor rails. KAISER ALUMINUM & CHEMICAL CORP. 11 Sept., 1968 [11 Sept., 1967; 5 July, 1968], No. 43277/68. Heading B7L. Electrically conducting rails 10, 50 have a steel portion comprising flanges 11, 58 interconnected by webs 12, 51 and a cast-on aluminium cladding 15, 15<SP>1</SP> extending into apertures 16, 52 spaced along the webs. Indentations 43 are formed in the aluminium cladding by profiled rolls which press the cladding against the steel after casting.
Patent GB-975056-A (GB)
Title: Christmas tree and like decorations
IPC: A47G33/08
Filed: 1963-11-01
Abstract: 975,056. Ornamenting. M. SCHMIDT. Nov. 1, 1963 [Nov. 2, 1962], No. 43307/63. Heading B6G. A decoration, particularly for Christmas trees, comprises a hollow decorative article such as a ball, suitable for forming a decorative chain each article being preferably of plastics material and being formed with a circumferential flange 4 widened at diametrically opposite points to form lugs 5, 6, provided with holes 6, 7. The ball also has holes 9, 10 in its surface offset from the lugs. Several balls are formed into a chain by passing a thin card, preferably of a transparent plastics material, through the holes 7, 9, 10, 8 of each ball so as to be kinked and retain the balls in fixed but slidably adjustable points. The cord is knotted at each end as at 12 to prevent detachment of balls.
Patent GB-1132817-A (GB)
Title: A spring key for fastening a railway rail and a rail-and-fastening combination employing the key
Inventor: JONES ALFRED ILLTYD WEBBER
IPC: E01B9/52
Filed: 1967-09-22
Abstract: 1,132,817. Spring keys for securing railway rails. ELASTIC RAIL SPIKE CO. Ltd. 22 Sept., 1967, No. 43363/67. Heading E1G. A flange-footed rail 1 is held in a longitudinally-tapered undercut recess in a chair 2 by a tapered spring key comprising an oval-section sheet steel channel having a mouth 13 and a ridged bore formed by two re-entrant portions 14A, B.
Patent GB-943310-A (GB)
Title: Improvements in or relating to automatic control systems for guiding air-borne missiles
IPC: F41G7/22
Filed: 1961-12-05
Abstract: 943,310. Automatic steering of missiles. ALBISWERK ZURICH A. G. Dec. 5,1961 [Dec. 7, 1960], No. 43490/61. Heading G3R. In a system for controlling an airborne target seeking missile, angular co-ordinates of the line of sight of the target from the missile, relative to the missile, co-operate with angular coordinates of the attitude of the missile, relative to a fixed direction in space, to so steer the missile as to maintain the direction of the line of sight fixed in space. The direction of a target is located by means of an optical detector, Fig. 5, pivoted about two axes 8, 9 and responsive to radiation from the target which is focused through a rotary disc modulator 5 on to a radiation-sensitive electric cell 7. The electric output of this detector, detector 1 in Fig. 4, is converted in a stage 3 to signals which control servomotors 2 adjusting the detector about its two axes to maintain it pointing towards the target. An electric transmitter 10 positioned by the detector produces signals α, #, corresponding to the direction of the target in azimuth and elevation relative to the missile. In a similar manner a detector 13 is automatically maintained directed towards a light source 12 mounted on a gyro 11 so that signals α 2 , # 2  are produced corresponding to the attitude of the missile about two axes relative to a fixed direction in space. The differences between #, # 2  and α 1 , α 2 , representing components of change in direction of the line of sight are produced in units 17,18, differentiated at 19, 20 and used to respectively control the elevation and azimuth controls of the missile so that the direction of the line of sight is maintained constant. To maintain the ratio between rates of change in elevation and heading constant, the ratio is measured by a servo unit 23 which produces a signal which is differentiated to control the roll attitude of the missile.
Patent GB-1479440-A (GB)
Title: Sliding clasp fastener stringer
IPC: A44B19/04
Filed: 1974-10-09
Abstract: 1479440 Sliding clasp fasteners YOSHIDA KOGYO KK 9 Oct 1974 [17 Oct 1973] 43723/74 Heading E2S A sliding clasp fastener stringer comprises a stringer tape 10 made of warp knitted fabric and having transversely alternating wales 11 and interwale grooves 12 at least on one surface thereof, a series of discrete fastener elements 13 arranged along one longitudinal edge portion 14 of the stringer tape and each having a coupling head 16 and at least one leg 17, 18 extending rearwardly from the coupling head, said leg of each fastener element having at least one inwardlydirected projection 19, 20 which is received in a respective interwale groove 15 on said one surface of said stringer tape, and at least one element connector 15 inter connecting each pair of fastener elements 13 at predetermined spacing, the, or each, said element connector extending along at least one of said interwale grooves 12 and being buried therein lower than the outer surfaces of the wales flanking the element connector 15. As shown in Figs. 1, 2 each of the two legs 17, 18 of each fastener element 13 has an intermediate, and rear end, inwardly-directed, projection 20, 19 respectively the fillet-shaped connector elements 15 being received in the same grooves 12 as the intermediate projections 20 which are correspondingly shorter than the rear end projections 19. The fasteners 13 can be made of any suitable material and, when made of plastics, can be formed by injection moulding, or by extrusion. Thermoplastic elements can be anchored to the tapes by high frequency, or ultrasonic welding. A single, meander-shaped, connector element (15) Figs. 3, 4, not shown, is woven into the tape (10) in a staggered manner so as to interconnect, alternately, every two adjacent legs (17, 18) of the fastener elements on either surface of the stringer tape (10). In another embodiment, Fig. 5, not shown, the connector elements (15a), in the form of fabric cord, or plastics monofilament, are embedded, integrally within the, equal-length, projections (19, 20) to be buried in the respective grooves (12) on both surfaces of the tape. Fig. 6 shows an arrangement wherein only one leg 17 of each fastener element 13 has projections 19, 20 one connector element 15a being embedded in the projection 19, the tape having corresponding wales and grooves 11, 12 on one surface only and the elements 13 being secured to the tapes by stitching 21. Fig. 7 shows an arrangement for one-legged fastener elements 13b.
Patent GB-1204648-A (GB)
Title: Improvements in semi-buoyant tubes
Inventor: PEDRICK ARTHUR PAUL
IPC: F16L1/14
Filed: 1969-09-03
Abstract: 1,204,648. Semi-buoyant pipes. A. P. PEDRICK. 3 Sept., 1969, No. 43730/69. Heading F2P. A semi-buoyant pipe for conveying matter or people between land masses below the surface of a river, sea, or the like, comprises an inner member 10 and an outer coaxial member 20 which is lined with rubber, the space between being filled with air at a pressure greater than the outer hydrostatic pressure, the whole being maintained at the required depth by cables attached to floats 4 above and anchors 5 below. These anchors may be of the type disclosed in Specification 1,080,189. As shown provision is made for the passage of road and rail vehicles and pedestrians. In another embodiment (Fig. 8, not shown) a pipe for the conveyance of fluids has axial pumps for the fluid, and the compressed air is provided by windmill driven units on the surface.
Patent GB-1475970-A (GB)
Title: Process for the preparation of trichlorothiazole
IPC: C07D277/32
Filed: 1975-10-24
Abstract: 1475970 Tricholorothiazole BAYER AG 24 Oct 1975 [12 Dec 1974] 43759/75 Heading C2C Trichlorothiazole is prepared by reacting N- (1,2,2,2 - tetrachloroethyl)formimidoyl chloride, CCl 3 CHClN=CHCl, with sulphur at 150- 250 C.