baber/WOPTO huggingface dataset:
Patent GB-1310960-A (GB)
Title: High-pressure compressors and pumps
IPC: F04B37/12
Filed: 1970-06-26
Abstract: 1310960 Crossheads MASCHINENFABRIK BURCKHARDT AG 26 June 1970 [30 June 1969] 31201/70 Heading F2T A compressor or pump comprises a piston or plunger 15 which extends into a lantern member 7 and is connected releasably to a crosshead 5 by means of a flexible rod 10, the lantern member having a guide bore 9 and formed to prevent entry of pumped medium into the crank-drive frame 1 and the mixing of cylinder lubricant with drive lubricant in the event of leakage. The piston 15 is coupled to a guide piston 12 at one end of the rod 10 by means of a  coupling 16, the other end of the rod passing through seals 23 which allow lateral movements  of the rod at the coupling 14 where the rod is  coupled to a pivot pin 6 in the crosshead. The  crosshead 5 is also coupled to an opposing  piston or plunger and is driven along a guideway 35 by a connecting rod 4 and a crankshaft 3. The lantern member 7 is provided with a  partition 21, drain holes 31, 32 and air apertures 24, 25, the latter being closed by one or more covers 26 which may be left open when the pumped medium is a non-volatile liquid. The chamber 30 of the lantern member is connected either through a low-pressure gas holder or a large gas discharge conduit with the outside air, the covers 26, if desired, being provided with explosion valves as an additional safety measure.
Patent GB-727181-A (GB)
Title: Improved spanner
Inventor: GOLDMAN ALFRED
IPC: B25B13/08
Filed: 1952-12-10
Abstract: 727,181. Spanners. LEYTONSTONE JIG & TOOL CO., Ltd. Nov. 30, 1953 [Dec. 10, 1952], No. 31262/52. Class 61. In a multi-jawed spanner comprising an elongated shank having jaws at the ends and along the sides of the shank, channel members are provided which can be moved to cover some at least of the side jaws not being used. The channel members 4 are of C cross-section and slide in grooves 3 provided on opposite faces of the spanner in thickened portions of the shank adjacent the jaws. The members 4 may be milled or formed with indentations to accommodate the fingers. Instead of being straight the members 4 may be arcuate.
Patent GB-1019343-A (GB)
Title: Improvements in electric lamps
Inventor: CAINE FRANK ALEXANDER
IPC: B60Q3/04
Filed: 1962-08-15
Abstract: 1,019,343. Indicator and like lamps. HUMBER Ltd., and E. A. CAINE. Aug. 12, 1963 [Aug. 15, 1962], No. 31359/62. Heading F4R. An electric lamp bulb is held in a housing having an aperture in front of which is mounted a spherical or cylindrical member of lightabsorbing transparent or translucent material for rotation about an axis perpendicular to the direction of the principal light rays passing through the member, a diametrical light passage being formed in the member at right angles to the axis of rotation. In the form shown, the bulb is mounted in a tube 10 closed at one end by a translucent cylinder 11 in contact with a complementary wall 12 at the end of the tube. The cylinder is mounted to rotate on spigots in bearings at the ends and is held in place by a bezel 19. The cylinder has a diametral slot 22 ending in a narrow wall 23 and is rotated by a finger piece 30. A single translucent member may be used in conjunction with a row of lamps, opaque separators being provided to divide the member into separate sections for each of the lamps. The passage may be closed at both ends or may be in the form of a plug of greater light transmission than the body of the cylinder.
Patent GB-680354-A (GB)
Title: Improvements in or relating to tubular scaffolding
IPC: E04G7/30
Filed: 1949-12-07
Abstract: 680,354. Scaffolding. BURTON, J. Dec. 7, 1950 [Dec. 7, 1949], No. 31369/49. Class 20(ii) A scaffold clamp comprises a U-shaped part 13 longitudinally adjustable on an upright tube 11 to which it is adapted to be preliminarily clamped by a screw-operated wedge 20 acting through a pressure piece 17, a second tube 23 being clamped at right-angles to the tube 11 by a jaw 27 pivoted on the clamp 13 such clamping action acting through the tube 23 and the pressure piece 17 on the tube 11 also. The wedge 20 acts between the pressure piece 17 and the end of a tube 10 welded or riveted between the arms 14 of the U-clamp 13. The jaw 27 is clamped by a bolt 31 pivoted on the clamp. 13. The pivot 26 of the jaw 27 passes through the pressure piece 17.
Patent GB-946974-A (GB)
Title: Improvements in or relating to electromechanical transducers
Inventor: PONTZEN GEORGE RAOUL
IPC: H04R1/46
Filed: 1961-08-31
Abstract: 946,974. Vibration detectors. LUSTRAPHONE Ltd. Aug. 1, 1962 [Aug. 31, 1961], No. 31438/61. Heading H4J. A vibration detector comprises a supporting member carrying a coil which is disposed in an air-gap in a magnetic circuit, and a button for transmitting vibrations from a vibrating contact to the coil, the supporting member being substantially freely accessible to the surrounding air. As shown, a pot magnet consists of a permanent magnet 1, back plate 3, body 2 and polepiece 5. Magnet 1 is centred by ring 4 and polepiece 5 is retained and centred by washer 6. The top of the body 2 extends inwardly to form a flange 9 which has a plurality of recesses W cut into its outer edge leaving an uninterrupted ring 13 which co-operates with the polepiece 5 to form air-gap 14 in which is disposed coil 21 attached to phosphor-bronze spider 17 which consists of an annular rim and a central disc joined by a plurality of radial arms. A clamping ring 15 is secured to the top of the flange 9 and the rim of the spider 17 is secured between this clamping ring 15 and a co-operating ring 16. A resilient button 23 is secured to the central disc of the spider 17 and projects through an aperture 26 in casing 24, which has apertures 27 opening into recesses 10 of flange 9. Spider 17 is positioned so that part of the length of each radial arm overlies a recess 10 to which an aperture 27 leads so that sound waves reach both sides of the spider substantially simultaneously and hence cause no output signal, while vibrations transmitted by the button cause the coil to vibrate and generate an output signal. The transducer may form part of an electronic stethoscope.
Patent GB-314773-A (GB)
Abstract: 314,773. Zwilling, L. March 27, 1928. Cases.-A gas-lighter comprises a dry battery b in an insulating tube a surrounded by a resilient wire coil e through which the current passes, one end of the coil serving as a screw-thread to receive a metal cap g containing the ignition wire k and the lower turns of the coil being held at the bottom of the tube so that the coil is stressed and holds the battery with the pole c in contact with a bolt m. The wire k is carried by two bent metal pins i clamped by a bolt m between fibre discs l, n, in such a manner that one pin engages the cap g and the other the bolt m, the discs being secured in the cap by indentations p. The lower end of the coil e may form a suspension ring f. In the form shown in Fig. 2, the circuit is closed by pressing the ring f into contact with the pole d. In a modification, the lower turns of the coil e, Fig. 3, are secured by soldering in a sleeve q, the ring f being arranged laterally of the sleeve. The circuit is closed by pressing a resilient contact it against a pin r, secured in a fibre disc s and in contact with the pole d. The disc s is spaced from the contact u by a ring t and is secured in the sleeve g by means of indentations.
Patent GB-676115-A (GB)
Title: Preparation of steroid derivatives with a substituent in position 21
IPC: C07J9/00
Filed: 1949-12-08
Abstract: 3(a ) - acetoxy - 11 - keto - 12 - bromo - 24 : 24 - diphenyl - d 20 : 22, 23 : 24 - choladiene is brominated in the 21 position by means of bromosuccinimide while subjecting to illumination.  The reaction may be effected in the presence of an anhydrous organic solvent, e.g. carbon tetrachloride.  By treatment with a metal acetate, e.g. silver acetate or sodium acetate, the bromine in the 21 position may be replaced by an acetoxy group while treatment with methanol yields the corresponding 21-methoxy compound.  3(a ) - hydroxy - 11 - keto - 12 - bromo - 21 - methoxy - 24 : 24 - diphenyl - d 20 : 22, 23 : 24 - choladiene on treatment with acetic anhydride yields the corresponding 3(a )-hydroxy compound while treatment with aluminium butoxide yields the 3 : 11-diketo compound.
Patent GB-1476735-A (GB)
Title: Self shift drive systems for gas discharge panels
IPC: H01J17/49
Filed: 1974-07-16
Abstract: 1476735 Matrix displays and circuitry therefor FUJITSU Ltd 16 July 1974 [16 July 1973 23 July 1973] 31526/74 Heading G5C A display system comprises a self scan gas discharge panel with crossed conductor arrays and drive circuitry including N shift buses A, B, C, D each connected sequentially to every Nth electrode a, b, c of one array; shift controlling means to apply a first periodic signal V A  cyclically to the shift buses; a further bus connected to the electrodes y of the second array, discharge control means to apply to the further bus Y a second periodic pulsed voltage V Y  of larger amplitude; the voltages V A  and V Y  being such that the resultant V CL  causes the discharge to shift and erases wall charge V Q  at the site of each cell from which a discharge is shifted. The shift control means comprise a plurality of low speed switches Qa...Qd connected to the buses and driven by a further switch Q S  and the output of the shift register 4. By making the voltages on the write and shift arrays w, a, b, c relatively low, transistor switches with a low voltage rating can be used in the write and shift drive circuitry 8, 11. The pulses V YS  on the Y array are provided by transistors Qy 1 , Qy 2  forming the discharge control means 7, 12. When these are off a potential of about ¢ V YS  is applied via resistors R1, R2. Using high and low speed transistors pulse trains V A ...V D  with mitral and final pulses of reduced magnitude can be obtained Fig. 7 (not shown). The high speed transistors may be used to drive the low speed transistors of several display panels.
Patent GB-410117-A (GB)
Title: Improvements in or relating to the production of raised photomechanical printing surfaces
IPC: G03F7/26
Filed: 1932-11-09
Abstract: 410,117. Photo - mechanical printing- surfaces. UHERTYPE AKT.-GES., Glarus, Switzerland. Nov. 9, 1932, No. 31703. Convention date, Nov. 9, 1931. [Class 98 (ii).] A relief printing surface, having a single, discontinuous printing plane, is formed by moulding material in a matrix comprising a completely -perforated, photographic colloid stencil backed by an accuratelysurfaced, rigid support capable of resisting deformation, the printing surface being formed by the exposed portions of the support. As shown in Fig. 5, a completely-perforated, photographic stencil 3 is first produced and is firmly applied to a rigid support 4. A shell 5 is then formed by spraying into the matrix molten metal or celluloid, artificial resin or other material which subsequently hardens. The shell is reinforced by backing up with moulding material 6, Fig. 6, before or after its removal from the matrix. The photographic stencil is obtained by exposing a light-sensitive gelatine layer behind a diapositive of line, reticulated or grain type, the unexposed portions being removed after development and hardening. As shown in Fig. 7, a thick gelatine layer 7 supported by a glass plate 8 having an accurately-machined surface to form the rigid, plane surface, is printed by contact from a diapositive 9. In a modification, the printing is through the support, if necessary, by projection. Fig. 11 shows the stencil produced, the depth of the non-printing places 7<1> being proportional to their width. Fig. 14 shows a similar stencil produced upon a film base 10 which is then applied to a rigid support 4. Instead of a film 10, a base of paper or other flexible material may be employed, exposure being made from the gelatine side. Such a support may consist of a thin sheet of magnetic material, e.g. steel which is firmly secured to an iron base 4 by magnetic force. In a further modification a sensitive layer on a paper support, after exposure, is squeegeed on to the rigid support and, after removal of the paper, is developed and further treated on the rigid support. Cylindrical printing surfaces may be produced by using a cylindrical support or by moulding a flat relief surface and subsequently applying it to a cylinder shell. The printing surface may be moulded directly from a wet or swollen stencil pattern, e.g. by spraying molten metal thereon.
Patent GB-431988-A (GB)
Title: Improvements in or relating to exhaust silencers
IPC: F01N1/08
Filed: 1934-11-05
Abstract: 431,988. Exhaust-silencers. SAINTJACQUES, E. C., 11, Rue Marbeau, Paris. Nov. 5, 1934, Nos. 31789, 31790, and 31791. Convention dates, Nov. 8, 1933, Jan. 30, 1934, and March 7, 1934. [Class 7 (ii)] The exhaust gases are directed tangentially at the larger end of a cylindro-conica receptacle, which is open at its narrow end and is providec with an inner member contained entirely within the cylindrical portion so as to form an annular space between the cylindrical wall and the inner member for the passage of the gases. The Figure shows one form in which the gases enter tangentially at 2 into the cylindrical portion 1 having a conical extension 3 with outlet at 4, the inner member comprising a fixed cone 5 within the cylinder 1. A ring of vanes 6 may be provided at the end of this cone to direct the gases inwards from the walls of the chamber. Other rings of vanes may be provided along the walls of the cylinder 1. The cone 5 may be replaced by a cylindrical tube open at both ends. The walls of the chamber may be made of sheet iron lined with a softer metal such as copper or magnesium.
Patent GB-192235-A (GB)
Title: Improvements in or relating to spindles for use in spinning and like machinery
IPC: D01H7/04
Filed: 1921-11-28
Abstract: 192,235. Vickers, Ltd., and Pool, W. Nov. 28, 1921. S p i n d l e apparatus; spindle-driving apparatus. -In a cap spindle the bobbin D is mounted on a sleeve L detachable from the fixed hollow column A which surrounds the slidable rod B carrying the cap C, and is mounted on a rubber or like pad J. The upper end of the sleeve L is enlarged to form a head T which prevents axial movement of the bobbin, and ball bearings F<2> are interposed as shown between the sleeve L and the column A. The sleeve L is resiliently connected by a spring ring R to an intermediate driving-member K which supports the bobbin and is provided with driving pegs k', the member K forming a cone friction-clutch with the portion e<1> of the driving-wharl E. When a bobbin is full the member K can be raised out of engagement with the part e' by means such as a lever M, and the cap C is then removed and the sleeve L and bobbin D withdrawn.
Patent GB-200439-A (GB)
Title: Improvements in perforators for letter files
IPC: B26F1/04
Filed: 1922-11-22
Abstract: 200,439. Waldschmidt, R., Waldschmidt, R., and Waldschmidt, H. Nov. 22, 1922. Selective perforating machines. - In an apparatus for perforating letters for filing, with two holes at varying distances apart, a handle f actuates, through traction links e, e<1>, a crossbar d with holes i, i<1> for the free passage of punches b, c and a stopped hole for a punch a. A sleeve d' journaled in the links is slidable over the crossbar and carries a hole h and slots g so arranged that when the hole h registers with either of the punches b, c that punch is rendered inoperative. In a modification, the crossbar and the sleeve are interchanged and the crossbar made movable. In further modifications, the sliding tube comprises a short sleeve extending the distance between the punches b, c or the sleeve instead of sliding axially may have a rotary movement.
Patent GB-173669-A (GB)
Title: Improvements in trolley heads for electrically propelled vehicles
IPC: B60L5/06
Filed: 1920-11-12
Abstract: 173,669. Danson, R. J. Nov. 12, 1920. Trolly pulleys. - In trolly heads for electrically propelled vehicles, the pulley is formed in halves 2 mounted directly on the spindle 3 and pressed together by springs 4 so as to grip the trolly wire.
Patent GB-1073856-A (GB)
Title: Production of sodium acrylate
Inventor: COOKE NORMAN CURTIS
IPC: C07C51/41
Filed: 1965-07-27
Abstract: Sodium acrylate is prepared by mixing a solution of sodium hydroxide in methanol with a solution of acrylic acid in methanol and separating the precipitate of sodium acrylate formed, e.g. by centrifuging or filtering.  The process is preferably carried out at a temperature in the range 5-50 DEG  C. and the mother liquor after the separation may be reused as a solvent for further amounts of acrylic acid.
Patent GB-655990-A (GB)
Title: Improvements in electric tumbler switches
Inventor: OSBORN FRANK WILLIAM
IPC: H01H23/16
Filed: 1948-12-11
Abstract: 655,990. Tumbler switches. SIMPLEX ELECTRIC CO., Ltd. Dec. 11, 1948. No.' 32086. [Class 38(v)] A slow - break A.C. switch comprises movable resilient contact strips 12 urged into engagement with fixed contacts 15 by springs 14 and forced away therefrom by rollers 28 on the dolly arm 25 engaging inclines 30 pressed out on the strips 12. A spring 35 acting between a hemispherical member 34 and a forked link 31 engaging the pivot 27 of the rollers imparts a positive action. In a modification the moving contacts comprise bridging members urged towards pairs of fixed contacts by springs situated at either end.
Patent GB-341563-A (GB)
Title: Fitting for conveying the crankcase oil vapour into the carburetter air intake on internal combustion engines
IPC: F02M25/06
Filed: 1930-07-23
Abstract: 341,563. Ventilating crank chambers. WALKER, J. O., Brandlehow, The Drive, Long Benton, Northumberland. July 23, 1930, No. 32124/29. [Classes 7 (ii) and 7 (iii).] A fitting for conveying oily vapour from the crank chamber to the air intake of a carburetter comprises a right-angled conduit c, leading from the side of a breather a to an orifice in a control valve d in the carburetter intake, and an extension forming an air inlet e. The valve d is in the form of a sleeve having opposed apertures of a diameter equal to that of the conduit c. A knob d<1> enables the valve to be rotated by hand to adjust the proportions of vapour and air admitted to the carburetter.
Patent GB-1173347-A (GB)
Title: Digital Information Signal Modulating Devices
IPC: H04L27/04
Filed: 1967-07-12
Abstract: 1,173,347. Modulation. COMPAGNIE FRANCAISE THOMSON HOUSTONHOTCHKISS-BRANDT. 12 July, 1967 [19 July, 1966], No. 32164/67. Heading H3R. Digital data input signals on line 2, Fig. 1, are fed directly and through inverter 200 to a bi-stable 3 controlling AND gates 4, 4N which are supplied with clock pulses at the bit rate from a generator 5. The outputs of gates 4 and 4N may be short pulses which are respectively positive and negative and are fed through equal coupling networks 6, 7 to a low-pass filter 10 having a cut-off frequency equal to the bit rate. In this case the output of the filter 10 will be half-cycles of a sine wave at the bit frequency, the polarities varying according to the data input (Fig. 3, not shown). Alternatively the gates 4 and 4N may produce the same outputs but feed different coupling resistances 7 so that the output varies in amplitude according to the data input (Figs. 9 and 10, not shown). The actual response of the filter 10 to an input pulse (wave B, Fig. 2, not shown), may differ from that desired (wave A); compensation for this may be provided by feeding the input data to a four-stage shift register (30, Fig. 3, not shown), each stage of which is coupled to the output filter as in Fig. 1, the coupling resistances (70, 71) equivalent to resistances 7 being proportioned according to the actual response wave of the filter 10. The low-pass filter may be replaced by a band-pass filter having a mean frequency fp and a passband of 2fc. If fp is an even multiple of fc no modification is necessary; if fp is an odd multiple of fc (Fig. 6b, not shown) there is a phase change of 180 degrees in the notional carrier wave after each bit, and this may be avoided by inverting alternate input data pulses (in coder 80, Fig. 7, not shown); if fp is an odd multiple of half fc (Figs. 6c and 6d, not shown) there is a phase change of 90 degrees after each bit, and this may be avoided by an input coder unit (800, Fig. 8, not shown) which opens in succession the four sets of gates (40-O, 40-E, 41-E and 41-O) associated with each stage of the shift register (30), thereby effectively altering the phase of each successive bit by 90 degrees.
Patent GB-722159-A (GB)
Title: Improvements in or relating to electric thermal cut-outs
IPC: H01H71/20
Filed: 1952-09-16
Abstract: 722,159. Thermal switches. PEARCE, J. W. A. Sept. 16, 1953 [Sept. 16, 1952], No. 23199/52. Class 38 (5) A cut-out for a kettle immersion heater 9 comprises a tubular casing 6 fixed at one end to a plug 7 carrying pins 10 connected to the heater 9, and at the other end to a hollow boss 11 secured to the heater. A plunger 16 extends through the casing 6 and has a bifurcated end 21 formed with projections (or recesses) 22 which co-operate with ribbed rollers 15, the rollers normally being prevented from rotation on spindles 14 by fusable metal whereby the plunger is held retracted against the bias of a spring 17 acting between a projection 18 in the casing 6 and a projection 19 on the plunger. On overheating, the rollers 15 rotate, permitting the plunger end 20 to force a socket connector off the pins 10.
Patent GB-1075065-A (GB)
Title: Fabric
IPC: D04H13/00
Filed: 1964-08-07
Abstract: A flexible elastomeric foam sheet 10 has either a series of chain stitches 22 or a simple warp structure 11, 12, 13 knitted through it thereby restricting the extensibility of the sheet, Figs. 1 and 4, not shown.  The stitches may be formed in the sheet whilst the sheet is extended whereafter the sheet is relaxed. Transverse threads 24 may be laid in on the sheet and secured beneath the knitted loops to restrict the transverse extensibility of the sheet.  In addition transverse threads 25 may be laid in on top of the threads 24 and likewise secured together with the latter but capable of being brushed or napped to provide a raised fibrous surface.  A further layer of warp knitted fabric 28 may be secured to the underside of the foam sheet by the chain stitches or the knitted structure.  The foam sheet may be of polyurethane and the securing threads may be of nylon as may be the transverse reinforcing thread 24.  The laid in yarn 25 may be of cotton capable of being napped.  Alternatively the laid in yarn may be a blend of mohair and acrylic yarns or a blend of acrylic, rayon and nylon yarns.  The backing fabric 28 may be an acetate fabric.