baber/WOPTO huggingface dataset:
Patent GB-1440697-A (GB)
Title: Random access storage files
IPC: G11B17/30
Filed: 1974-06-06
Abstract: 1440697 Disc recording and playback; supporting magnetic heads INTERNATIONAL BUSINESS MACHINES COBP 6 June 1974 [2 July 1973] 25101/74 Heading G5R Part of a laminar stack of rotating flexible record discs 8 is flexed to produce an opening into which a transducer head 48 is inserted into a flying position over a selected disc surface without making contact with the edge of the selected disc. As shown, an aerofoil blade 28 is thrust obliquely by a pneumatic actuator 34 into the disc stack at a selected point and is followed by the head 48, which is suspended from a carriage 52, 54 by a double spring arm 50 and is initially held away from the selected disc surface by a roller 68d at one end of a spring-biased crank 68, Fig. 7, mounted on a stationary pivot-post 68a. As the head 48 moves into the disc stack, a cam surface 54a on the head-carriage 52, 54 moves into engagement with a roller 68c at the other end of the crank 68 which turns and releases the head 48.
Patent GB-664143-A (GB)
Title: Improvements in fluid flow control valves applicable to enclosures, e.g. pressurizedaircraft cabins
IPC: B64D13/02
Filed: 1948-09-27
Abstract: 664,143. Fluid-pressure servomotor control systems; valves. GARRETT CORPORATION. Sept. 27,1948 [Sept. 29, 1947], No. 25132/48. Class 135. A control valve, e.g. for a pressurised aircraft cabin, comprises a valve member 19, Fig. 5, having a knifeedged flange 21, urged to closed position on a seat 18 by a spring 66 and the pressure in a control chamber 45 and urged to open position by the cabin pressure. A diaphragm 36 joins the member to the chamber and has a U-sbaped portion 44 substantially equal in area to the end of the flange 21, whereby the valve member is unaffected by external pressure. The chamber 45 is connected to the cabin through a restricted orifice 149, a filter 145 and a conduit 135, Fig. 6, and has two valve-controlled connections to atmosphere. The first is by a valve member 78 actuated by an absolute bellows 70, and the second by a valve member 113 actuated by a differential bellows 71 subject internally to atmospheric pressure, both bellows being subject externally to the control chamber pressure. The members 78, 113 are urged to their seats by adjustable tension springs 94, 128 respectively. The member 78 will remain open until the cabin pressure, and hence the pressure in the chamber 45, decreases sufficiently to permit the spring 94 to expand the bellows 70 thus moving the member towards its seat. The member 19 will then close to a position where the outflow past the member equals the inflow supplied by the cabin blower. The cabin pressure is then maintained substantially constant until an altitude is reached where the differential between control chamber and atmospheric pressures overcomes the spring 128 and unseats the member 113 to reduce the cabin pressure and prevent damage to the cabin structure. Several valves of the type shown in Fig. 5 may be positioned in the cabin wall to ensure even ventilation throughout the cabin, all the chambers 45 being interconnected and only one having the valve-controlled connections to atmosphere. Alternatively, several valves may be controlled by mechanism of the kind described in Specification 655,616. Specification 650,766 also is referred to.
Patent GB-1343725-A (GB)
Title: Detection of magnetically permeable material
IPC: G08G1/042
Filed: 1971-04-19
Abstract: 1343725 Road traffic detectors CANOGA CONTROLS CORP 19 April 1971 [25 March 1970] 25162/71 Heading G4Q [Also in Division G1] Apparatus for detecting the arrival or continued presence of a magnetic body, e.g. a vehicle, in a certain location, comprises a magnetometer arranged to monitor the vertical component of the Earth's magnetic field outside the volume defined by the projection of said location in the direction of the Earth's magnetic field and means responsive to a reduction in the field strength sensed by the magnetometer for indicating the arrival or presence of a magnetic body. Thus, a single magnetometer can be used to monitor both sides of a service island in a filling station or N magnetometers can monitor N + 1 lanes of a road. Fig. 4(a) shows an arrangement for detecting arrival. A flux gate magnetometer 50 has two opposed primary windings 54, 56 and two serially connected secondary windings 58, 60. The secondary windings are connected through a voltage doubling rectifier circuit 70 to one input 84 of an operational amplifier 80, and via an RC delay circuit to the other input 86 of the amplifier 80. Arrival of a vehicle causes a positive pulse output from amplifier 80 which enables gate 106 to pass a pulse of high frequency oscillations from amplifier 62 on to the mains voltage supply line to signal to a bell actuating circuit (Fig. 5, not shown) in a service station attendant's hut. Regenerative feedback is applied to the secondary windings 58, 60 via loop 100. In an arrangement for indicating continued presence (Fig. 6a, not shown) the RC delay circuit is replaced by a potentiometer which is set to give the desired threshold. This arrangement may or may not have regenerative feedback to the secondary windings of the magnetometer.  In Fig. 8 N magnetometers connected in series as shown are arranged between the lanes of a road (Fig. 13, not shown). The magnetometer outputs are phase detected and fed to charge a capacitor 314. A bias current, set at 334, is passed through the magnetometer secondary windings to reduce the ambient magnetic field, potentiometer 334 being set to a level just below that at which lamp 340 will light. Relay 372 is actuated upon detection of a vehicle in any lane of the road causing reversal of the phase of the output of the magnetometers. If switch 364 is in its PULSE position, the relay is energized for a short time on arrival of a detected vehicle. If switch 364 is in its PRESENCE position, by passing capacitor 366, the relay is energized for as long as the detected vehicle is present. Automatic bias may be provided instead of the manually set bias 334, the output of amplifier 344 being connected, via an RC delay, to the secondary windings of the magnetometers (Fig. II. not shown). The differentiating capacitor 366 may precede the amplifier 360 (Fig. 12, not shown). The magnetometers are potted in plastics or aluminium blocks small enough to fit in a conventional saw cut slot in a roadway (Fig. 14, not shown).
Patent GB-1091004-A (GB)
Title: Water closet cistern
Inventor: BARNES JOHN
IPC: E03D1/07
Filed: 1965-06-15
Abstract: 1,091,004. Siphon-discharge water-waste preventing cisterns. JOHN STEVENTON & SONS Ltd. June 15, 1966 [June 15, 1965], No. 25210/65. Heading E1C. In a flushing cistern comprising a tank 1, a siphon therein, and an actuating member 19 with an external operating handle 7, the latter is mounted centrally on the front wall of the tank 1 and pivoted about an axis along or parallel with the top of the wall, an arm 15, 17 extending from the handle 7 into the tank 1 being operated on turning the handle 7 pivotally, the limb 17 lifting the member 19 through a link 18. The handle 7 pivots on trunnions 8 with which a non-circular hole in at least one end face is coaxial to receive the limb 15, located in channels 5 closed by the lid 11 and having slots 16 in the inner walls for the limbs 17.
Patent GB-1428206-A (GB)
Title: Colour television
IPC: H04N11/16
Filed: 1973-05-25
Abstract: 1428206 Colour television BRITISH BROADCASTING CORP 17 May 1974 [25 May 1973] 25223/73 Heading H4F A chrominance television signal in pulse form is produced directly from primary colour signals E R <SP>1</SP>, E G <SP>1</SP>, E B <SP>1</SP>, the resulting signal being the same as if a PAL (or NTSC) signal were sampled at predetermined sub-carrier phase positions. The primary colour signals E R <SP>1</SP>, E G <SP>1</SP>, E B <SP>1</SP>, are supplied to a matrix M including nine multipliers and three adders (S 2 -S 4 , Fig. 3, not shown), each multiplier multiplying one of the primary colour signals by a predetermined weighting factor appropriate to that signal and to one of three sub-carrier phase positions, each adder receiving the three signals from the multipliers corresponding to a respective phase, to provide a signal P 0 , P 1  or P 2 . The signals P 0 , P 1 , P 2  are supplied, via filters FC, to be cyclically sampled by a switch SW to produce the pulse signal SP at three times sub-carrier frequency; the direction of rotation of switch SW reverses on successive lines to provide the action of a PAL switch. The pulse signal SP may be passed through a filter FA to provide a conventional PAL signal AP. A luminance signal L, which may be generated in matrix M by a further three multipliers and a further adder, is passed through a filter FL and is added at A to the outputs of the filters FC; alternatively the luminance signal L may be added to the conventional PAL chrominance signal produce by the filter connected to the output of switch SW (Fig. 5, not shown). As the signals P 0 , P 1 , P 2  sum to zero the matrix M may produce only the signals L 1 , P 1  and P 2 , the third chrominance signal being produced by an inverting adder (Al, Fig. 4, not shown) receiving the outputs of the filters FC which receive the signals P 1  and P 2 . The primary colour signals E R <SP>1</SP>, E G <SP>1</SP>, E B <SP>1</SP> may be produced by a colour television camera or a telecine machine.
Patent GB-1142702-A (GB)
Title: Interferometric examination of objects and materials
Inventor: BURCH JAMES MORRISS
IPC: G01B9/021
Filed: 1965-06-15
Abstract: 1,142,702. Optical ganging apparatus. NATIONAL RESEARCH DEVELOPMENT CORP. June 15, 1966 [June 15, 1965], No.25269/65. Heading G1M. [Also in Division G2] A method for detecting small differences between at least part of the surface of a test object and a reference surface to which said part surface closely approximates, comprises preparing a hologram of the reference surface; placing the part surface as nearly as possible in the position exactly corresponding to that occupied by the reference surface when making the hologram; reconstituting an image from the hologram while the part surface is so positioned; and observing the pattern of interference fringes between the image and the part surface. As shown, the reference surface and the part surface are part of the same object, namely a piece of channel steel 13. The image from the hologram 14 is compared with the object having a compression force applied at 18, light from a laser is deflected by a lens 12 so that part falls on the stressed object before reaching the hologram, while part travels directly to the hologram. As the applied force is varied, the pattern of interference fringes varies. This pattern can be photographed directly, or observed through a diffusing screen or stopped telescope system. When comparing part of a test object with a reference surface, the light falling on the part surface may be arranged to be incident thereon over a wider range of angles Fig. 4 (not shown) or all at the same oblique angle Fig. 5 (not shown). In another embodiment Figs. 6, 7 (not shown) for comparing flat surfaces having relief patterns thereon, e.g. a coin face, a laser beam is incident on the reference coin (62) through a photographic plate (61) so that the plate is exposed to direct light passing through it and to light scattered back by the object, which interferes with the direct light. The image and test object are observed or photographed by means of a semi-transparent reflector (64). The method may be applied to visual examination of a vibrating object.
Patent GB-152862-A (GB)
Title: An improved construction of gas fire lighter
IPC: F24B15/00
Filed: 1919-10-16
Abstract: 152,862. Boydell, W., and Hornby, R. Oct. 16, 1919. Lighting fires.-In a gas firelighter of the type in which gas and air are mixed in a perforated tube 1 and burned at the perforations, one end of the tube 1 is closed by a tightly-fitting plain plug 3 to form a poker end, and the other end is similarly fitted with a nipple 9 formed with a jet 11, a flexible tube connecting the nipple 9 with the gas supply. Reference has been directed by the Comptroller to Specification 125,799.
Patent GB-991194-A (GB)
Title: A gear shaving machine
IPC: B23F19/06
Filed: 1962-07-03
Abstract: 991,194. Gear-finishing. F. HURTH, and H. HURTH. Jan. 3, 1962 [Aug. 1, 1961], No. 25419/62. Heading B3K. A gear shaving machine comprises a slide 63 carrying the work or tool which is adjustable to vary the distance between the axes of the work and tool and can be fed to a point determined by stops 71, 71a between the work and tool supports. The work 26 is mounted between stocks 67, 68 which carry the blocks 71, 71a to limit the feed towards a hyperbolic shaving gear. The blocks are unequal if a bevel gear is to be shaved, the table 65 carrying the work being adjusted angularly by screws 69, 70 to suit the bevel angle, a degree of play being allowed by the screws. The blocks 71, 71a may be replaced by eccentric stops adjusted as machining proceeds.
Patent GB-1180649-A (GB)
Title: An Improved Time Delay Relay
Inventor: PETTERSSON LARS-OLAV
IPC: G04F3/06
Filed: 1967-06-02
Abstract: 1,180,649. Electromagnetic switches. ALLMANNA SVENSKA ELEKTRISKA A.B. 2 June, 1967 [3 June, 1966], No. 25565/67. Heading H1N. [Also in Division F2] A time-delay relay with a latched armature comprises a synchronous motor which is energized at the same time as the relay winding and after a preselectable time interval releases the latching device to allow the armature to be fully attracted. A motor 1 drives a gear train 3 which can be selectively coupled to a shaft 13 by a tumbler gear 30 (see Division F2) which is axially slidable by rotation of an Archimedean screw 41. A clutch 18, 19, normally out of engagement, can couple shaft 13 to a differential gear assembly 7, 8, 9, the planet wheel 9 of which is carried on a disc 10 having an indicator arm 55 and a projection 16 which can engage a lug 51 to operate a pivoted latch 53. The time delay is selected by setting a pointer 12 against a scale 14 and by rotating the gear-change control 43 with a screwdriver to give a scale factor shown in a suitable window by disc 45. Crown wheel 8 is normally held against a stop (not shown) by a spring 11. Rotation of pointer 12 turns crown wheel 7 and hence moves planet wheel 9 (and disc 10) half as much, this being indicated on a shorter scale 56 by the arm 55. On energizing the relay coil (46, Fig. 4, not shown), its armature (28) is partially attracted against latch 53 and allows a spring blade (22, Fig. 2, not shown) to engage the clutch 18, 19. Motor 1 now drives crown wheel 8 to return the planet wheel 9 back to its initial position, tensioning spring 11 in the process. When arm 55 reads zero projection 16 engages lug 51 and the latch 53 is thereby removed from the relay armature which moves to its fully attracted position and switches off motor 1. When the relay coil is de-energized the armature disengages clutch 18, 19 and the spring 11 returns crown wheel 8, thus restoring planet wheel 9 to its set interval position in readiness for another cycle. Should the motor 1 overrun when the latch 53 allows the armature to fully attract, the projection 16 urges lug 51 beyond the release position and a further lug (54, Fig. 4, not shown) causes the clutch 18, 19 to disengage to prevent damage.
Patent GB-857418-A (GB)
Title: Process for the manufacture of basically substituted 3-alkyl-phenothiazines
Filed: 1957-08-13
Abstract: Phenothiazines of the general formula:  <FORM:0857418/IV(b)/1> and their acid addition salts, are prepared by Wolff-Kishner reduction of either compounds of the general formula:  <FORM:0857418/IV(b)/2> or of compounds of the general formula:  <FORM:0857418/IV(b)/3> followed by introduction of the residue ANR1 R2 into the 10 position of the 3-alkyl phenothiazine so formed.  A representing a possibly branched alkylene chain, R1 and R2 alkyl groups, Y a possibly branched alkyl group of at least 2 carbon atoms or an aralkyl group and Z an aliphatic or araliphatic acyl group.  Specifications 724,217, 789,703 and 797,172 are referred to.
Patent GB-256479-A (GB)
Abstract: 256,479. Pepper, A. Aug. 14, 1925, [Convention date]. Loading.-Silk is treated with a solution of tin chloride and washed, then with a solution of sodium phosphate and washed, then with a solution of acetic acid and washed, then with a solution of lead acetate and again washed, and finally with a solution of sodium phosphate. Examples of the strength of solutions, duration of treatment, and temperatures are given. Some parts of the process may be repeated.
Patent GB-1255295-A (GB)
Title: Rotary knob
IPC: H01H19/14
Filed: 1970-05-28
Abstract: 1,255,295. Brakes INTERNATIONAL STANDARD ELECTRIC CORP. 28 May, 1970 [31 May, 1969], No. 25797/70. Heading F2E. [Also in Division H1] A rotary knob 10 for mounting on a control shaft 60 of an apparatus particularly of a rotary switch has a bore receiving a click-stop fixing the position of rotation of the shaft, a socket 100 of the click-stop joined to the knob being provided with a bore 101 for passage of the shaft and being mounted to the apparatus, the socket having a contour 106 in which ball members 130, 140 guided by a ring 150 coupled to the shaft and biased by a compression spring 26 and retaining disc 160, are permitted to slide. Upon actuating the control shaft 60 balls 130, 140 engaging circular recesses in the guide ring 150 in a step by step manner to fix the position of rotation of the shaft. A collet 70 fixes the shaft to an internal sleeve 20 of the knob 10 to limit axial movement. Knob 10 also has an outer housing in three parts 30, 40, 50, on the bottom part 30 of which is moulded an indicator 32 to indicate the position of the knob. For adjusting the position of the indicator a circular cam 21 is provided along its circumference with slots 22, Fig. 2 (not shown) arranged in an angular division corresponding to the engaging positions of the knob 10, which engage a nose portion (33) of the part 30. The rotary motion of the control shaft 60 is restricted by means of limit stop rings 180, 190 having projections (181), (191) engaging recesses 25 on the housing 20 and arresting catches (182), (192) co-operating with a stop element 104, the angle between the catches being determined by the number of switching positions.
Patent GB-628233-A (GB)
Title: Improvements relating to electrical condensers
IPC: H01G4/228
Filed: 1947-09-25
Abstract: 628,233. Condensers. FERRANTI, Ltd., and SIMSON, V. J. Sept. 25, 1947, No. 26000. [Class 37] An electrical condenser 10 of the wound type in a tubular casing 13 of insulating material has convolutions 11 forming an electrode projecting at either end. An intermediate connecting member 17 in the form of a shallow cup with perforated base 16 and serrated rim 20 is inserted at both ends and rigidly held against the convolutions by spinning-over of the end 21 of the casing. Solder is caused to flow through the perforations to make a sound connection between the cup and the electrode convolutions 11. Conductor 15 is welded to the inside of the cup. The condenser is sealed against moisture by pouring wax into the cavity 22.
Patent GB-1116942-A (GB)
Title: Improvements relating to article dispensing machines
Inventor: PROVAN ANTHONY BROWN
IPC: G07F11/68
Filed: 1964-06-24
Abstract: 1,116,942. Coin and token freed apparatus. ANTHONY BROWN PROVAN, METROPOLITAN DEVELOPMENTS Ltd. 23 June, 1965 [24 June, 1964], No. 26054/64. Heading G4V. [Also in Divisions A4 and B8] A machine, which may be coin-operated, dispensing toothpaste and toothbrushes, has the toothbrushes 20, Fig. 12, individually wrapped in plastic sheet 21 sealed between each brush and formed into a roll or zig-zag pack stored in container space 30, Fig. 5, the sheet being led over roll 31 and down guide 32 to a star roller 33, Figs. 9, 12, which is manually rotated by handle 52 to entrain one tooth-brush which is severed from the sheet by knife 41 moved into slot 37 by cam 47, acting on crank 40, 45 when accurately positioned by pawl 77 entering notch 76. A coin in shoot 51, 53, Figs. 14, 9, cams on abutment 61 to depress plunger 58, 60, allowing the star roller to be rotated via ratchet-wheel 71 and pawl 72 and pass the coin to retainer 54, a kick plate, notch cam and spring-loaded roller accurately aligning shoots 51, 53, 54. Reverse movement of handle 52 in which the stop roller stays still, rotates cam 47 via ratchet-wheel 73 and pawl 74 to actuate knife 41 and via linkage 105, 103 to move a toothpaste pump 90 for container 101 so that pump handle 95 and delivery nozzle 120 are withdrawn from shroud 117. In dispensing paste, a pump plunger finger 112 removes retaining pawl 109 from notched plate 111 allowing spring 108 to retract the pump handle and nozzle. When the last brush is dispensed, a spring guide 78 moves on to the star roller and releases via 79, 80 a resettable, spring plate 81 closing the coin slot 55.
Patent GB-504441-A (GB)
Title: Improved method of manufacturing drawing dies
IPC: B21C3/18
Filed: 1938-09-06
Abstract: 504,441. Uniting metal to ceramic material by heat. FINSPONGS METALLVERKS AKTIEBOLAG. Sept. 6, 1938, No. 26090. Convention date, Sept. 8, 1937. [Class 36] [Also in Group XXII] A drawing die comprising a non-metallic insert and a metallic holder is made by filling out the interstices between them with a molten binding agent which wets both parts. Such a binding agent may consist of borax, glass or enamel. The die 4 and opening 2 in the holder 1 are first filled with asbestos or other refractory material and the die then inserted into the recess in the holder in a layer of the binding agent, preferably in powder form. The whole is heated in a furnace to melt the binding agent and light pressure is applied to the die to complete the joint 6, the binding agent extending round the side and lower surface of the die. On cooling, the holder shrinks until it closely surrounds the die. The die may consist of a ceramic mass containing from 60-98 per cent of aluminium oxide, and may contain up to 10 per cent of alkali. It may consist substantially of mullite, 3Al 2 O 3 .2SiO 2 , or sillimanite, Al 2 O 3 .SiO 2 . The material may be made from a mixture of hard china and alumina so as to reduce the content of alkali below 10 per cent,