baber/WOPTO huggingface dataset:
Patent GB-1412597-A (GB)
Title: Microphone damping
IPC: H04R1/22
Filed: 1972-11-22
Abstract: 1412597 Microphones; acoustic impedance elements PLESSEY DUCON PTY Ltd 22 Nov 1972 [23 Nov 1971] 53914/72 Headings H4J and H3U An acoustic impedance element comprises a mesh having apertures of substantially uniform dimensions, the aperturesbeing closed over one or more selected areas of the mesh by means of a coating on the selected area or areas of the mesh. Preferably photo-sensitive material is applied to the whole of a metal mesh to block all the apertures. Using a mask, one or more suitable areas of the mesh are exposed to light. The photo-sensitive material is subsequently removed from the exposed area or areas. A microphone comprises a metal case 10, a perforated cover 12 and connecting pins 13. An encapsulated integrated circuit amplifier 15 is connected by leads 14 to a diaphragm 17 comprising a thin piezoelectric disc bonded to a metal disc. A disc 20, to which is adhered a partly closed metal mesh 21, is spaced from the diaphragm 17 by a spacing ring 16a. A further annular spacer 22 spaces disc 20 from a disc 23 to which is adhered a partly closed metal mesh 24. A plastics membrane 26 protects the microphone from saliva or humidity. An inner cavity bounded by spacing rings 16a damps a natural resonance in the region 3 to 4 kHz. The cavity bounded by spacer 22 controls resonance in the region of 12 kHz.
Patent GB-1479649-A (GB)
Title: Teleprinters
IPC: H04L17/12
Filed: 1974-12-20
Abstract: 1479649 Telegraphy; station identification SIEMENS AG 20 Dec 1974 [25 Jan 1974] 55102/74 Heading H4P A station identifying character signal generator incorporated in a teleprinter comprises a store having elements in which characters can be written electronically and remain unaltered after disconnection of an operating voltage, the elements being addressed by a register on initiation by a read-out control unit. The generator store SP has rows of storage elements, which are not accidentally erasable, e.g. MNOS transistors, which may store say 20 characters each of 5 bits, in association with a row selecting register R2 and column register R1 both acting as distributors. Initial "write in" is performed by a unit SB, which may be a plug in unit so as after insertion of information it may be removed to prevent unauthorized alteration. Initially store SP is erased by inserting all 0's which may be done by depression of the key "letters" and inverting the character signal which is then stepped through the rows in SP by a 1 progressing through the stages of R1. When this reaches the 21st position a signal KA sets the flip-flop F3 which after disconnection and reconnection of a tape reader LL (not shown) F3 is reset and a signal GR restores R1, R2 to their initial position. From a teleprinter keyboard (KA, not shown) or tape reader relevant characters are then tapped out which are inserted in SP sequentially. Alternatively SP can be set by a manufacturer whence SB will be unnecessary. The sequence may be initiated by depression of a key "here is" or after reception of "who is there" signal under the control of unit SST through a transmitter unit SE. The store SP is of known construction and is arranged as illustrated in Fig. 2 (not shown).
Patent GB-1480800-A (GB)
Title: Mowing implement
IPC: A01D69/08
Filed: 1974-12-23
Abstract: 1480800 Mowing implement MULTINORM BV 23 Dec 1974 [28 Dec 1973] 55627/74 Heading A1F A mowing implement 1 comprises a plurality of rotary cutting members 7 journalled on a housing 3 and is connected to the lifting links 20 of tractor 19 by frame 22 in which is journalled a driving shaft 23 driven by the tractor power take-off. Auxiliary frame 24 is adapted to turn about the horizontal shaft 23 with respect to frame 22. Shaft 23 energises rope drive 26 and hence shaft 21 and bevel gear drive 15 in housing 16. The housing 3 is supported forwardly of frame 24 by being rigidly secured to a foot 68 forming a support and associated with leg 69 which can turn about the centre line 25 of frame 24 under the action of hydraulic cylinder 71 in order to adapt the mowing implement 1 to the slope of the ground level. Housing 3 has a trough-shaped bottom to which is welded at 6, or bolted, a lid 5. The housing contains driving gear 63 comprising driving gear wheels 10 attached to cutting members 7 by means of shafts 9 and coupling gear wheels 11 arranged between driving gear wheels 10, there being an even number of coupling gear wheels 11 between pairs of driving gear wheels 10. The gear wheel 10 nearest tractor 19 is driven through elastic coupling 27 and shaft 28 by the bevel drive 15 arranged inside drum 67 which surmounts the cutting member 7 nearest the tractor. Each cutting member 7 comprises a disc 36 fixed by screws 34 to a hub 35 and forming a holder to which at least one disc cutter 37 is fastened. The cutters 37 of adjacent cutting members 7 are relatively off-set by 90. The cutting member 7 furthest remote from the tractor also supports a drum 67 on the disc 36 and housing 3 has at each end toward the rear a stationary swath board 72. The mowing device of Figs. 6, 7 (not shown) is arranged to be attached to the front of the tractor or like vehicle wherein housing 3 is fastened at each end to a foot 68 of a leg 69. Legs 68 are suspended to auxiliary frame 24 by parallel bars (76) and lifting cylinders (75). The angle + between the mowing implement 1 and the ground is adjusted by a cylinder (77). The embodiment of Figure 8 (not shown) shows a shaft (28) journalled both at the top and at the bottom in bearing housing 16 and drum 67 operates as a coupling means between shaft (28) and the associated cutting member 7 and is connected between them through two flexible couplings. In Figure 9 (not shown) the implement 1 is also supported by a stationary tube (79) while in Figures 10 and 11 (not shown) support 68 is a round shaft connected by pivot (84) with arm (85) of the suspension means for attachment to vehicle 19.
Patent GB-1368147-A (GB)
Title: Valve whose operating device is complete sealed off from the  fluid passing through the valve body
IPC: F16K31/04
Filed: 1971-12-03
Abstract: 1368147 Valves COMPAGNIE FRANCAISE DES PETROLES 3 Dec 1971 [11 Dec 1970] 56370/71 Heading F2V A valve has means for completely sealing its actuating device from the controlled fluid. The valve closure member 31 is controlled by an actuating member 7 movable with linear motion by an actuating device disposed in housing 1. The space containing the actuating device is filled with fluid 26, e.g. oil, and is sealed from the controlled fluid 25 by a bellows 24. A further bellows 28 located in a chamber communicated with the controlled fluid via passage 27, maintains the fluids 25, 26 at the same pressure to reduce stresses in the bellows. An electric motor drives a threaded shaft 17 through gearing 13, 16 to raise or lower the member 7 and thereby the closure member 31.
Patent GB-1437099-A (GB)
Title: Servo-devices particularly but not exclusively for steering gears
IPC: B63H25/30
Filed: 1973-12-05
Abstract: 1437099 Power steering systems VOLVO FLYGMOTOR AB 5 Dec 1973 [8 Dec 1972] 56451/73 Heading B7H [Also in Division G3] A servo device, particularly for use in steering gear, including a pair of opposed piston and cylinder devices 5, 6 defining chambers 10 flow from which is controlled by valve members 16 actuable by an input member such as steering rack 3. The cylinders are slidably mounted on the pistons 5, which are connected by common rod 4 to a stationary housing 1, and are inter-connected by a body 7 carrying output members 8 for connection to the steering gear. The rack 3, this may be replaced same worm and nut form, has levers 14 against which transmission means 19 are pressed by springs 18. On movement of the rack, say to the left, as long as the wheel resistance is less than the spring force steering occurs without assistance. When the spring force is overcome transmission means 19 unseats the valve member 16 of the right hand chamber 10 and fluid is exhausted therefrom. The left hand chamber is unaffected thus power assistance is effected. Chambers 10 contain slidable damping pistons 20 having throttle passages 21 therein. In another embodiment, (Figs. 2 and 4, not shown) the rack 3 surrounds one of the cylinders and the transmission means are replaced by balls 19 engaging the valve member 16. Relative movement between the housing of the valve device and the rack is permitted by a spring (18) positioned therebetween. The damping pistons are replaced by apertured diaphragms trapped between the cylinders and the valve housing. In a further embodiment, Fig. 3, the pistons are reversed to face each other and the valve device 15 is between the two chambers 10, the outer ends of the piston rods being connected by a common capping tube 1a. The steering rack tube is divided into two parts 3a, 3b, one of which 3a is connected by a first biassing spring 18 to one of the cylinders 6 to allow axial movement therebetween for actuation of the valve member 16 associated with that cylinder. The other part 3b slidably receives the end of part 3a and is rigidly secured to the other cylinder which is separated from the rack tube part 3a by a spring 18<SP>1</SP>.
Patent GB-1246293-A (GB)
Title: A rotary hydraulic supply pump
IPC: F04C2/08
Filed: 1968-12-02
Abstract: 1,246,293. Rotary pumps. VON ROLL A.G. Dec.2, 1968 [Nov.30, 1967], No.57165/68. Heading F1F. A rotary hydraulic pump, as shown a gear pump, for supplying hydraulic pressure fluid to e.g., a wobble plate pump to ensure that the cylinders of the latter pump at any operating speed are always filled, comprises aligned plates 2, 3, 4, Fig. 1a, secured by bolts (not shown) to the base-plate 1 of the wobble plate pump wherein the base-plate 1 symmetrically arranged about a vertical axis includes a suction port 5 and central hole 6 and a stub shaft 7 respectively supporting the drive and driven gears 10, 14 mounted in openings 9, 13 in the plate 3. An opening 15 in the plate 3 communicates with the suction port 5 and the suction side 16 of the pump whilst an opening 18 communicates with the discharge oxide of the pump and a connection 19 in the plate 4. The latter connection through openings 23, 25 in the base-plate 1, a filter 24 and an annular chamber 20 in the plate 4 is connected to one or other connections 26, 27 supplying the low-pressure side of the wobble plate pump. To reverse the direction of rotation of the drive gear 10, the plate 3 is reversed so that the opening 15 is on the other side of the centre line of that plate and the plate 4 is rotated through an angle of 90 degrees to register the discharge opening 18 with the opening 25 in the base-plate 1. In another embodiment, the pump includes a drive gear and two driven gears on either side thereof with the axes of the three gears on the vertical centre line of the plate 3. To facilitate the escape of trapped oil between the gears and reduce noise each gear tooth includes at least one bore connecting the tooth tip and the tooth root with the central bore supporting the bearing shaft which latter is formed with grooves to collect the trapped oil.
Patent GB-1403220-A (GB)
Title: Textile treatment processes
IPC: D06M15/53
Filed: 1972-12-14
Abstract: 1403220 Treating textiles HENKEL & CIE GmbH 14 Dec 1972 [17 Dec 1971] 57808/72 Headings D1B and DIP Textiles are treated with aqueous solutions which contain a wetting and/or washing agent which is a poorly foaming adduct of 5 to 20 moles of ethylene oxide with 1 to 10 moles of propylene oxide and 1 mol of an aliphatic diol having 10 to 20 carbon atoms, the hydroxyl groups of which are substantially all non-terminal and adjacent. The preferred adducts contain 5 moles of EO+3 moles of Po, or 7 moles of Eo, + 5 moles of Po in combination with 1 mol of a diol of average chain length C 15  to C 17 . The adducts are used in dyeing cotton with direct and vat dyes and is scouring, washing, desizing and bleaching processes.
Patent GB-1375973-A (GB)
Title: Vapour recovery apparatus
IPC: B65D90/30
Filed: 1971-11-11
Abstract: 1375973 Recovery of volatilized liquid; direct contact condensers PARKER-HANNIFIN CORP 11 Nov 1971 [7, Dec 1970] 57836/73 Divided out of 1375971 Heading BIB  Vapour given off by a volatile liquid, e.g. hydrocarbon fuel, in tank 9 flows through line 12 to compressor 13 and the compressed vapour flows through air-cooled, finned tube 68 and aftercooler 70 for distribution by manifold 23 below the surface of an absorbent liquid in vessel 17, whereby the vapour is condensed and absorbed by the liquid. The liquid, which is usually the same as that which gives off vapour in tank 9, is supplied to vessel 17 from reservoir 6 through pipe 51, coil 53 and line 26. The liquid in vessel 17 is preferably maintained at a temperature of about -18C by withdrawing some of it through line 27, passing it through heat exchanger 45 which contains chiller 36 and then returning the cooled liquid to the vessel through spray head 30. Air is discharged from vessel 17 through bleed-off line 48. Liquid is withdrawn from vessel absorber 17 through line 25, and casing of heat exchanger 50 and coil 71, and is sprayed into flash separator 19 where air and vapour are released, and then flow through line 61 to compressor 13. The separated liquid flows from separator 19 to reservoir 6 through line 62. Chiller 36 is part of a refrigeration module 33, the condenser 35 of which is cooled by liquid pumped up from reservoir 6.
Patent GB-1336629-A (GB)
Title: Microwave ovens
IPC: H05B6/80
Filed: 1971-12-17
Abstract: 1336629 Microwave ovens PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 17 Dec 1971 [21 Dec 1970] 58686/71 Heading H5H A microwave oven comprising a cavity 10 with a supply wave-guide 22-25 surrounding its walls 11-14, at least one of which has slits 28 for the admission of energy into the cavity, is characterized by one or more cyclically variable, mode stirring, reflector bodies 30, 31, preferably on both sides of the antenna 27 of the magnetron 26. The bodies rotate with a mutual phase difference of about 45 degrees. Electrically conductive bodies 30, 31 have two vanes 32, 33, and 34, 35, fixed at 90 degrees to one another, and are rotatably mounted on shafts 36, 37, driven by a common driving wheel (not shown). Alternatively, a reflector body 40, Fig. 4 (not shown), is a helicoid. Specification 1,312,540 is referred to.
Patent GB-1299895-A (GB)
Title: Fuel injector devices
IPC: F02M69/04
Filed: 1969-12-02
Abstract: 1299895 Fuel injectors, spray carburetters PETROL INJECTION Ltd and H E JACKSON 13 Nov 1970 [2 Dec 1969] 58789/69 Heading F1B A fuel injection system includes a fuel injector having two valve members one of which has a fuel port 12, Fig.1 which co-operates with the other member to form a metering orifice having an area variable by relative movement of the valve members in response to variations in fuel pressure. A spring 15 urges the valve member head 10 against a spring-loaded diaphragm 5, the fuel port 12 being normally closed. Fuel supplied to the chamber 4 moves diaphragm 5 upwardly to allow valve member 8 to take up a new equilibrium position in which the fuel port area corresponds to the fuel pressure. The fuel injector may be operable with a fuel pressurizing device or in a fuel injection system as described in Specification 1254181.
Patent GB-1213468-A (GB)
Title: Circuit arrangement for delayed connection of a high-voltage supply to a magnetron
IPC: H03K17/28
Filed: 1967-12-28
Abstract: 1,213,468. Transistor time delay switching circuits. PHILIPS' GLOEILAMPENFABRIEKEN N.V. 28 Dec., 1967 [31 Dec., 1966], No. 58841/67. Headings H3T and H3W. A circuit for controlling the application of HT to a magnetron (e.g. in a high frequency furnace) comprises a relay 22 connected in the output circuit of a network of active elements 13, 14, the input circuit of which contains a first RC network 9, 10, for determining the period for which HT is applied to the magnetron and a second RC network 42, 11, 12 for determining the delay before HT is applied. As described, the A.C. supply 1 is rectified at 3 and used to charge capacitors 10, 12. Transistor 14 is normally conductive, short-circuiting relay 22 so as to prevent energization of the HT control relay 27 until capacitor 12 has charged sufficiently to turn on transistor 13 and hence turn off transistor 14. The furnace may now be started by operating a push button 25 which allows relay 22 to become energized so as to energize the HT control relay 27 which connects the HT transformer 28. The change-over of contacts 23 will allow capacitor 10 to discharge at a rate determined by the setting of resistor 9, diode 8 becoming conductive so that transistor 13 will be turned off when capacitor 10 has discharged to a voltage less than that of the emitter of transistor 13. This action will turn on transistor 14 which short-circuits relay 22 and releases the HT control relay 27.
Patent GB-1335219-A (GB)
Title: Method of and an apparatus for evaluating a signal
IPC: G01R23/00
Filed: 1970-12-11
Abstract: 1335219 Analysing voltage waveforms SIEMENS AG 11 Dec 1970 [11 Dec 1969] 59139/70 Headings G1N and G1U The specification shows how two parameters referred to as 'mobility" and "complexity" and defined in terms of the low order moments of the power spectrum S(#), of an arbitrary voltage waveform f(t), may be evaluated directly from the mean powers of the voltage waveform f(t) and its first and second derivatives f'(t) and f" (t) without ever evaluating the power spectrum S(#). These parameters are said to be of assistance in interpreting and EEG waveform and the claims relate to a method an apparatus for their evaluation. By definition the power spectrum S(#) of a waveform f(t) it given by - S(#) = F(#) F*(#) where F(#) is the Fourier transform of f(t) and F*(#) its complex conjugate. The moments of S(#) are defined by - M r  = #<SP>+#</SP> -#  #<SP>r</SP>S(#)d#, r = 0, 1, 2, ...., and the two parameters in question, namely mobility M and complexity C are defined by - and and it can be shown, principally by noting that if F(#) is the Fourier transform of f(t) then iwF(#) is the Fourier transform of f'(t), that M and C can be expressed as follows:- and where and Fig.1 shows a block diagram for evaluating M and C using the above expressions. The function f(t) and its first and second derivatives are squared 2, and integrated to produce #<SP>2</SP> a , #<SP>2</SP> d  and #<SP>2</SP> dd . These are then appropriately divided 4, 5 and square rooted 6 to produce M and C on leads 7 and 8. A more detailed block diagram is described Fig.2 (not shown) using operational amplifiers.
Patent GB-1394350-A (GB)
Title: Valve for venting hot pressurized gas
IPC: C21B7/00
Filed: 1973-12-20
Abstract: 1394350 Valves HOOGOVENS IJMUIDEN BV 20 Dec 1973 [22 Dec 1972] 59161/73 Heading F2V [Also in Division F4] A valve for venting hot gases from a blast furnace has a valve member 4 which is biased by disc springs 11 against a seat 3 fixed to the end of a conduit 1. When gas is to be vented through conduit 1 a piston-cyclinder 7 is actuated to lift the valve member 4 from its seat and then a piston-cylinder 22 is actuated to pivot a U-shaped yoke 15 which carries the valve member, biasing springs and pistoncylinder 7 so that the latter are moved out of the fluid flow path. The yoke straddles the conduit 1, is pivoted at opposite sides of the conduit, and is rigid with crank arms 20 that are connected to the piston cylinder 22.
Patent GB-1453039-A (GB)
Title: Winding of fabric webs
IPC: B65H18/16
Filed: 1973-12-21
Abstract: 1453039 Controlling tension in wound web rolls KANEBO Ltd 21 Dec 1973 [25 Dec 1972] 59614/73 Heading B8R In a method of winding a fabric web 30, Fig. 2, with an interleaved web 24 into a web roll la, the density of the web roll is controlled by pressing a presser roller 28 continuously against the periphery of the roll la with a pressure whose value varies with increasing diameter in accordance with a predetermined function, the diameter being sensed and its corresponding function point expressed as an electric signal which is compared with an electric signal derived from the instantaneous measuring of the pressure with which the presser roller 28 is pressed against the web roll. Comparison of the two signals is used to control the pressure of the roller. In operation the web roll diameter is continuously sensed by a roller 41 mounted on a pivotal arm 43 fast with a shaft 42 which, through the intermediary of a belt or chain drive train, displaces angularly a cam 51. The cam 51 actuates a potentiometer which produces an output signal corresponding to the predetermined function. The output signal is fed to the controller 55 which includes a comparator circuit. The presser roller 28 which is pressed continuously against the web roll using a pneumatic cylinder 31, Fig. 3, also supplies the controller 55 with a signal by a pressure detector 65a. The controller is effective to control the pressure in the cylinder 31 such that the presser roller 28 is pressed against the web roll in accordance with the predetermined function.
Patent GB-1300931-A (GB)
Title: Improvements in and relating to shoe making
Inventor: LOCKWOOD CHARLES ALFRED
IPC: A43D8/00
Filed: 1969-01-29
Abstract: 1300931 Boots &c SHOE & ALLIED TRADES RESEARCH ASSOCIATION 29 Jan 1970 [29 Jan 1969 (2) 27 Feb 1969 31 Oct 1969 (3) 10 Dec 1969] 4864/69 5076/69 10625/69 53625/69 53628/69 53629/69 and 60291/69 Heading A3B A method of preforming a shoe upper or upper component preparatory to assembly of a shoe includes the steps of conforming a sheet or blank of stretchable and settable shoe uper material to a mould having a flattened last shape, the mould surface corresponding to the whole or part of the upper, said conforming being achieved by applying a fluid pressure differential to the material so that it stretches into conformity with the mould surface, and setting the resultant distortions in the upper material at least temporarily. Preferably the mould has a male moulding surface corresponding to the whole of the shoe upper and has a shape which is substantially that which would be arrived at by forming a shell of thin resiliently bendable material to the last shape required and partially flattening the shell by outwardly displacing the side portions. In making the mould unplasticised PVC is vacuum moulded to a last to form a shell (Fig. 33) which is trimmed along the top line 301 and feather edge 22. In a first embodiment the shell is cut at one side along line 300 and is opened out and flattened and the J-shaped mould shown in Fig. 1 is made using the flattened shell as a pattern. In a second embodiment the shell is cut down the back line 302 to form the U-shaped mould shown in Fig. 5. In a third embodiment (not shown) the shell is cut down both sides 300, 303 to form a two part mould, one part for the quarters and the other for the fore part. The shell is flattened to such an extent that the draw ratio B/A (see Fig. 23) of any protuberance (e.g. the toe, heel or vamp cone) is in excess of 1, Furthermore the distance between two points of the feather edge (e.g. points 211 and 212 in Fig. 23) measured along the mould surface must not be more than 35% greater than the distance between the two points as measured in a straight line. The moulds (see Fig. 1, 5) include surfaces 21 for forming the lasting margin, surfaces 22 for forming a seam allowance and surfaces 20 for forming a top-line folding margin. In a modification (not shown) the centre of the mould shown in Fig. 5 is filled in level with the feather edge and the top line is cut after moulding. The shape of the cut top line can be varied to form different styles of shoe e.g. oxford, gibson or casual shoes. The upper material may be poromeric material or P.V.C. and is vacuum moulded to the mould shapes shown. Leather uppers may be similarly formed but must be covered with an impervious sheet, e.g. of rubber, to permit vacuum moulding.