baber/WOPTO huggingface dataset:
Patent GB-807379-A (GB)
Title: Improvements relating to magnetic storage systems
Inventor: MAYNE DAVID QUINN
IPC: G11B5/027
Filed: 1956-06-05
Abstract: 807,379. Magnetic recording and reproducing apparatus. BRITISH THOMSON-HOUSTON CO. Ltd. June 20, 1957 [June 5, 1956], No. 17351/56. Class 40 (2). A head, for a data storage system such as in Specification 761,918, wherein instantaneous values of a variable quantity are represented by a magnetic step change across a record tape, comprises a magnetic cylinder rotatable about its axis and having a peripheral gap extending at once both peripherally and axially of the cylinder so that on rotation individual points of the slot will pass in a straight line locus through a fixed plane, and an induction winding for inducing flux across the gap or responding to flux changes induced at the gap by the recording. In a preferred embodiment, Figs. 2 and 3, the cylinder 1 is formed by a pair of slots 2, 2<SP>1</SP> conforming to a two-start helix and containing a continuous winding 5 passing around the slots. In use, the head is arranged close to the tape 7 with its axis at right-angles to the relative direction of travel of the tape. During recording or reproducing the head is rotated such that the scanning action takes place at relatively high speed. During recording a magnetizing current of rectangular waveform is passed through the induction coil, the periodicity of which is in step with the scanning time in the absence of a step change position to be recorded, i.e. reversals of current take place at each half revolution. The traverse displacement of the step change across the record is effected by varying the track-to-space ratio or the relative phase of the rectangular waveform. If the overall variation is sufficiently great the line of demarcation may therefore run off one edge and recommence at the other, as in the aforementioned prior Specification. During reproduction the gap scans the width of the track to induce pulses of positive or negative going polarity depending on the direction of the flux change, the time phase being a measure of the instantaneous value of the recorded quantity. Fig. 6 illustrates an alternative construction whereby the cutting of helical slots is avoided by the cutting of an oblique planar slot 17 through the cylinder and the winding is a helix on an inner cylindrical member 19. In this arrangement the scanning action has a sinusoidal characteristic, but a characteristic not far from linear is obtained by selecting an operational region corresponding to a limited portion of the sine wave, Fig. 7. It is shown that with a Œ30‹ operational region and each scan taking place in a halfcycle of the input waveform, the cyclic frequency of such must be three times the rotational frequency. With a single slot two out of three cycles of input would not be used, but this could be avoided by providing additional phased slots. With planar slots there is a slight non-linearity, but this is not significant as the same relationship applies to both recording and reproducing procedures (assuming that similar heads are used).
Patent GB-1098214-A (GB)
Title: A linear divider for use with a machine tool
Inventor: PORTAL PIERRE
IPC: B23Q16/02
Filed: 1966-04-20
Abstract: 1,098,214. Milling. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 20, 1966, No. 17371/66. Heading B3K. [Also in Division F2] A machine tool, such as for milling fins on tubes, comprises a work-table 2 having a rack 6 at one end engageable by teeth on a driving pin 12 and a locking pin 13, the pins being moved in opposite directions perpendicularly to the table by a locking rod 22 moved parallel to the table, there being a further rod 36 movable parallel to the table to move the driving pin laterally and hence the table. In operation, when the rod 22 is moved, it withdraws the locking pin as it advances the driving pin 12 by opposite slots 28, 29. When the rod 36 is advanced, it carries the table along by an amount determined by micro-switches (60, 61). Total table movement is limited by stops 4.
Patent GB-1308032-A (GB)
Title: Conveyor installations
IPC: F16H19/04
Filed: 1970-04-13
Abstract: 1308032 Rack propelling gear BECORIT GRUBENAUSBAU GmbH 13 April 1970 [12 April 1969] 17402/70 Heading B7H [Also in Division E1] In a conveyor which is driven on a rail track by a combined rack and pinion and friction wheel drive and wherein a rack bar extends over certain portions parallel with the rail track, an engagement device is provided for guidably coupling the pinion to a fixed part of the vehicle in a predetermined orientation so that the pinion may then mesh perfectly with the teeth of the rack bar on initial engagement therewith. The engagement device comprises permanent magents 8 secured to the pinion 6 and which co-operate with permanent magnets 9 on a fixed part 10 of the driving axle. The magnets are arranged in such a way that the pinion 6 may be received by the rack bar 7 in faultless meshing engagement. A hydraulic drive couplling 5 is connected with the pinion 6 and is engaged or disengaged by a hydraulic switch 11 operated by a switch bar 14. Alternatively field generators may be provided instead of the switch device 11, 14 and are provided adjacent the rails 1 near the ends of the rack bar 7. The field generators transmit a signal to magnetic reed switches mounted on the vehicle for engaging and disengaging the drive coupling 5.
Patent GB-682347-A (GB)
Title: Improvements relating to devices for the trimming of wall paper and the like
IPC: B44C7/02
Filed: 1950-07-12
Abstract: 682,347. Cutting-appliances. ELSTON, E. P. July 11, 1951. [July 12, 1950] No. 17409/50. Class 31 (ii). A device for trimming wallpaper and the like comprises a U-shaped guide member 3 the underside of which is bent down to form a bracket 4 to which an L-shaped clamping member 8 for a cutter 6 is adjustably secured, the cutter being clamped between the member 8 and a plate which is clamped in position by a nut 10 and bolt 11 or other locking means. The upper portion of the guide member is bent up at 5 to form a guard for the upper end of the cutter, and is cut away at 14 so as to permit of the trimmed off portion of the paper clearing the cutter during the trimming operation.
Patent GB-1126431-A (GB)
Title: Improvements in fabric winding and unwinding machines
Inventor: ROBINSON ROY
IPC: B65H23/04
Filed: 1966-04-21
Abstract: 1,126,431. Feeding webs. HUNT & MOSCROP Ltd. 5 April, 1967 [21 April, 1966], No. 17432/66. Heading B6B. In a fabric winding or unwinding machine wherein a pivoted scray or shoot B, into which the web is fed during its passage between the roll drum A<SP>1</SP> and an associated machine, controls the operation of the wind or unwind roller, the shoot B is connected by a linkage to a control lever of a variable-speed gear driven by a motor and driving the wind or unwind roller. The shoot B is pivoted at b and is counterbalanced by a weighted arm b<SP>2</SP>. A link d, Fig. 4, connects the shoot to a linkage d<SP>1</SP>, d<SP>7</SP>, operating the control lever d<SP>13</SP> of an hydraulic relay D<SP>2</SP> actuating a variable speed gear D continuously driven from a motor D<SP>1</SP>. The output shaft of the speed gear D drives the drum A<SP>1</SP> or two rollers (a<SP>2</SP>, Fig. 5) supporting the drum. A lever D<SP>3</SP> connected to the linkage can be set into one of two positions in which it is held by clips d<SP>5</SP>, d<SP>6</SP>. In one position, the linkage d<SP>1</SP>, d<SP>7</SP>, d<SP>3</SP> sets the speed gear D so that its output shaft rotates in one direction for winding, and in the other position the output shaft rotates in the opposite direction for unwinding. A frame carrying the drum A<SP>1</SP>, shoot B and the drive mechanism may be mounted on wheels a to enable the apparatus to be moved to the entry or delivery end of a fabric treatment machine. Longitudinal tensioning.-The web is tensioned by means of two adjustable rails c, Fig. 1.
Patent GB-883406-A (GB)
Title: Tube bender
IPC: B21D7/06
Filed: 1960-05-18
Abstract: 883,406. Angular bending. IMPERIALEASTMAN CORPORATION. May 18, 1960 [Jan. 5, 1960], No. 17516/60. Class 83 (4). A tube bender comprises a mandrel or former having a peripheral bend-forming groove, a shoe having a tube-pressing surface, and means connecting the shoe to the mandrel for movement of the shoe in a path circumjacent said groove and with said surface confronting the groove to urge a tube into the groove during such movement, said connecting means including means permitting movement of the shoe outwardly from said path at only one point in said path and maintaining said shoe in said path at all other points therein. A tube T is bent around a peripherally grooved former 11 by a grooved shoe 14 pivoted about a post 25 coaxial with the former 11 by an adjustable handle 15. The shoe 14 is provided with two arms 20 each having a hole 22 having a circular portion 23 and a rectangular recess 24. The post 25 which has two flat sides and curved ends, extends into the holes 22, the arrangement being such that the direction of elongation of the recess 24 is aligned with the direction of elongation of the post 25 only at the beginning of the bend and 180 degrees from that position. A pin 35 on the arm 20 engages an annular groove 36 in the side of the former 11, the groove having one radial channel 37 arranged so that the shoe 14 can be moved away from the former 11 only at the beginning of the bend, to allow a tube to be inserted, and not at the 180-degree position. Thus to remove the bent tube the shoe 14 is pivoted back to the starting position.
Patent GB-844113-A (GB)
Title: An improved method of filling a chill mould with a metal melt, apparatus for carrying out the method, and chill moulds for use in the method
IPC: B22D18/06
Filed: 1958-06-02
Abstract: 844,113. Casting-machines. FISCHER A.G., G. June 2, 1958 [June 1, 1957], No. 17610/58. Class 83 (1). A mould 4 is evacuated by disposing it and a sealing-lid 9 in non-sealing relationship in an evacuable-chamber 1, evacuating the chamber, and causing the mould to be sealed by the lid, the vacuum in the chamber being then released. The metal mould 4, Fig. 1, is held in position in the chamber by a magnet 8, and the lid 9 is held by a device 14. After evacuation of the chamber, the magnet is withdrawn, allowing the mould to drop on to the sealing lid. Release of the vacuum in the chamber causes the lid to be closed more tightly against the mould. The mould and lid assembly is then removed, placed in a heat-insulating jacket 17 with a handle 18, and casting is performed by inserting the fusible end 12 of a quartz-lined, tubular extension 11 of the lid below the surface of the melt 19. In a modification, Fig. 3, the evacuable vessel 22 comprises two evacuable chambers 27, 28. The mould 4 is held by the magnet 8 while the chambers 27, 28 are evacuated. A cock 26 is then adjusted to supply air to the chamber 28, so that the resilientwall 24 of the chamber 27 compresses and presses the mould against the lid 9. Thereafter the vacuum in the chamber 27 is released, the resilient-wall 24 returning to its initial position with the mould and lid assembly. Mould material.-The mould may be of metal-oxides, nitrides, carbides, silicides or borides.
Patent GB-108990-A (GB)
Title: Improvements in or relating to the Production of Neutral Sulphate of Ammonia.
Inventor: CAPRON FELIX
IPC: C01C1/249
Filed: 1916-12-08
Abstract: 108,990. Capron, F. Dec. 8, 1916. Ammonium sulphate. - The acidity usually present in ammonium sulphate is removed by washing the crystals with saturated solution of ammonium sulphate at ordinary or raised temperature, the washing-solution being neutral or slightly alkaline. When the wash-liquor is neutral the. operation is finished. The acid washings may be neutralized with gaseous ammonia, ammonium carbonate, &c. and used again. Any suitable apparatus may be employed, that shown comprising a centrifugal apparatus A which contains the crystals and receives neutral liquor from a saturator D. The wash-liquor is collected in a channel a<2> and flows by a pipe a<3> to a tank B communicating with the saturator by a pump C.
Patent GB-1519459-A (GB)
Title: Apparatus for varying filament count
IPC: D01D5/20
Filed: 1976-04-28
Abstract: 1519459 Varying filament device COURTAULDS Ltd 28 April 1976 [29 April 1975] 17692/75 Heading B5B A filament 1, preferably a polyamide or polyester is passed round a feed roll 3 and a separator roll 4, the roll 4 having a surface which is entirely matt and the feed roll 3 having a surface which is divided into axially extending bands which are alternately matt, 9, and mirror finished, 10. The matt band is the wider band and subtends an angle at the roll axis which exceeds the angle of yarn wrap. The matt and mirror finish surfaces exhibit higher and lower frictional resistance to a filament passing over them and allows successive gripping and slipping of the filament on the surface as it passes round the feed roll. The matt surface on the roller is provided by adhesive polytetrafluoroethylene tape fixed to the roller. Filaments passing from the roller device are drawn, optionally after heating, by means of drawrolls. Filaments may be preheated by heating the feed roll 3.
Patent GB-421644-A (GB)
Title: Improvements in and relating to thermionic valves and to circuits therefor
IPC: H03D7/10
Filed: 1933-06-21
Abstract: 421,644. Thermionic valves; valve circuits for wireless reception. ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex, and COOPER, A. H., Appledore, Syke Ings, Iver, Bucking- hamshire. June 21, 1933, No. 17743. [Classes 39 (i) and 40 (v)] A valve has an anode, a cathode, a control grid, a second or screen grid, and a third grid controlling the current to the second grid without affecting the current to the anode when the potential of the second grid is maintained constant. As shown in Fig. 1, the screen grid 4 and the indirectly-heated cathode 2 are longer than the control grid 3 and the anode 5, and the third grid 6 is arranged between the extended portions of the cathode and screen grid 4. A suppressor grid 8 may be mounted between screen grid 4 and the anode, and a grid 7 at a positive potential may be provided to prevent feed back from the screen grid 4 to the control grid 3. The control grid may be of the variable-mu type. The valve may be used in the superheterodyne receiving circuit shown in Fig. 2. The input circuit 11, 12 is connected between the control grid 3 and a variable bias which may provide automatic gain control. The grid 6 is connected through a leak resistance 15 to earth and through a condenser 16 with a tuned circuit 17, 18 coupled with a winding 19 in the circuit of the screen grid 4 to produce local oscillations. An anode circuit 20, 21, tuned to an intermediate frequency, is coupled to the input of an amplifier through an inductance 22. A biassing resistance 9, shunted by a condenser 10, is connected between the cathode and earth so as to give a small negative bias to the grid 6 and produce stability of the local oscillations.
Patent GB-440261-A (GB)
Title: Improvements in or relating to the manufacture of containers
IPC: B21D51/52
Filed: 1934-06-15
Abstract: 440,261. Making boxes. LEIGHTON, W., 48, South Street, Carlisle. June 15, 1934, No. 17791. [Classes 83 (ii) and 83 (iv)] [See also Group XVII] The lid of a box and an integral hinge member 34 are formed in one pressing operation, the lid and hinge member being cut and stamped in the downstroke, and the hinge member being completely curled in the upstroke of the press. A blank is cut from a metal sheet by die members 4, 26, aT-shaped projection being formed by the portion 30, and the blank is flanged over a former 27 on continued downward movement of the upper die head and retraction of the outer lower die member 26 against the action of a rubber buffer 16. On the return movement of the dies, the T-shaped projection on the blank is engaged by a recess 31 in the member 26, and a corresponding recess in the upper die, and is curled to form the hinge member 34. The member 34 engages in stamped up portions 40, 41, Fig. 4, or 44, 45, Fig. 5, in the base of the box. Slots 39, 46 permit the entry of the member 34, and the material of the portion 44 may be curled in to prevent disassembly.
Patent GB-1355836-A (GB)
Title: Composite material
IPC: C22C32/00
Filed: 1971-05-28
Abstract: 1355836 Composite material INTERNATIONAL BUSINESS MACHINES CORP 28 May 1971 [30 June 1970] 17826/71 Heading C3B [Also in Division C7] A composite material comprises an epoxy resin matrix containing films of a polycrystalline metallic material having a grain size of less than 5000Š and an ultimate normalized strength of 10<SP>-3</SP> to 6 x 10<SP>-2</SP>, which films may be coated with a barrier layer to reduce interdiffusion. The films may be in the form of plates, wires or flakes; they may be supported on a substrate. The films may be formed by sputtering, evaporation or electrodeposition and the substrate may be removed prior to incorporation in the matrix by casting, powder metallurgy, compression moulding, infiltration or coextrusion. The films may be oriented in the matrix by application of magnetic, electric or gravitational forces. The use of D.C., A.C. or R.F. sputtering on a plate or wire is described.
Patent GB-977889-A (GB)
Title: Suspension polymerisation method
Inventor: WHITE ROY ALBERT
IPC: C08F2/22
Filed: 1963-05-06
Abstract: A process of producing bead polymers by suspension polymerization which comprises dispersing at least one ethylenically unsaturated polymerizable monomer in suspension in an aqueous medium, and stabilizing the suspension during polymerization by means of a phosphate which is difficultly soluble in water and a soluble hydrocarbon acid phosphate in an amount up to 0.3% by weight of the total suspension. The hydrocarbon acid phosphate is preferably the Na, Li, Mg, K or Ca propyl phosphate, whereas the difficultly soluble phosphate is preferably Ca, Sr or Mg hydroxy phosphate. The monomer to water ratio is greater than unity.  Examples relate to the homopolymerization of styrene and methyl methacrylate and copolymerization of styrene and acrylonitrile, styrene, a -methyl styrene and acrylonitrile.
Patent GB-420656-A (GB)
Title: Improvements in or relating to apparatus for producing straight line motion more particularly for electric switchgear
IPC: H01H3/46
Filed: 1934-06-18
Abstract: 420,656. Linkwork; electric switches. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and HEATH, A. A., Lydstep, Rowley Park, Stafford. June 18, 1934, No. 17993. [Class 80 (iii)] [See also Group XXXVII] A reciprocating motion in a straight line is imparted to a rod d from an actuating rod D, also with a straight line motion, by means of two straight line linkages of known type connected by a bell-crank. Each linkage comprises a swinging link 8, or 8<1> connected by a link 4, or 4<1> with one of the rods, the ends of the crank 1 being pivoted to intermediate points 6, or 6<1> of the link 4 or 41. The crank is pivoted at 2 to fixed plates 3. The mechanism is duplicated about a vertical plane through the rods. The angle between the lines 6, 2 and 2, 6<1>, determines the angle between the rods. The device is specially adapted for use with electric switches.
Patent GB-616882-A (GB)
Title: Improvements relating to the control of aircraft
IPC: B64C13/42
Filed: 1946-06-14
Abstract: 616,882. Controlling aircraft. PITT, H. L. June 14, 1946, No. 17998. [Class 4] In an aircraft of the type fitted with control stabilizers as described in Specifications 468,559 and 560,573 and elevons as described in Specification 560,572, the movements of the surfaces are so inter-related that they may be moved into desired positions from their neutral or high lift positions, while differential movements in the same or opposite directions may be imparted to them when required. The surfaces 4 are controlled by a column 8 movable in a fore-and-aft direction about a pivot 13, the column comprising an outer tube 12, inner tube 14 and central shaft 15. The elevons 6 are connected to the inner tube 14 by links 23, 33, while the stabilizers 4 are connected to the shaft 15 by links 30, 36, a degree of lost motion being provided (Figs. 7, 8 and 9, not shown), so that no movement of the stabilizers takes place over a portion of the range of movement of the control column. A hand wheel 16 at the upper end of the column, for imparting differential movements to the .surfaces, carries two pinions 19, 22, the former of which meshes with-a pinion 20 at the end of the inner tube 14, while the latter can, under certain conditions, be brought into engagement with a pinion 21 on the shaft 15. The lower end of the shaft 15 carries a roller 38 moving over curved tracks 40, 41 in a quadrant member 39, the track 40 being raised relatively to the track 41 so that the shaft 15 is lifted to engage the pinions 21, 22 when the column is moved rearwardly from its neutral position, but not when it is moved forwardly. As shown in Fig. 17, the column 8 may move in a slot in a quadrant 60 marked in four ranges, A, B, C and D, with the positions of the columns for effecting normal flight manoeuvres, and showing also the appropriate throttle settings. In range A, with the column 8 pulled rearwardly, the lost motion in the stabilizer control linkage has been taken up and the stabilizers and elevons are raised or lowered simultaneously, and differential movements of both result from rotation of the hand wheel 16. Over range B; with the control column approximately vertical, the lost motion prevents movement of the stabilizers, which are retained open at a small angle, e.g. by friction mechanism (Fig. 14, not shown). In range C limited free movement of the elevons both up and down and fully differentially is possible while the stabilizers are completely closed and inoperative. Range D is the dive position, in which the control column is pushed to the extreme forward position, displacing a stop which normally prevents this movement; in this position the stabilizers are inoperative, but the elevons are lowered. As shown in Fig. 9, switches 100, 101, 102 may be provided on the member 39 to operate the engine throttle control in accordance with the movements of the control column.
Patent GB-972903-A (GB)
Title: Liquid dispensing apparatus having improved delivery hose retriever means
IPC: F16L3/01
Filed: 1963-05-07
Abstract: 972,903. Dispensing liquids. GILBERT & BARKER MANUFACTURING CO. May 7, 1963 [June 11, 1962], No. 18023/63. Heading A4T. In a liquid dispensing unit in which retriever mechanism including a cable 16 for storing the nozzle delivery hose 12 in an inverted loop, the cable end is secured to a short rod 36 pivoting perpendicularly to the hose axis in opposite recesses in two bracket halves 37 secured together by bolt 32 and dowels 30 so as to pivot about the hose axis in groove 24 formed by two semi-circular stalls 20 clamped at 22 around the hose.
Patent GB-560423-A (GB)
Title: Improvements connected with spacers for frames in bee hives
IPC: A01K47/02
Filed: 1942-12-18
Abstract: 560,423. Beehives. WEBB, J. G, Dec. 18, 1942, No. 18043. [Class 5 (ii)] A metal spacing mem, ber 4 for the frames of beehives is of channel section, one flange 5 of the channel having spaced slots 7 for receiving the frame extensions which, when in position, rest on the lower edges 10 of the slots and on the shorter flange 6. The depth of each slot is such that the edge 10 and upper edge of the flange 6 are disposed at the same distance above the base of the member 4. The member shown is pressed from sheet metal and is adapted to be secured to the supports 11 of the hive.