baber/WOPTO huggingface dataset:
Patent GB-1529755-A (GB)
Title: Arrangement for starting and feeding a discharge lamp
IPC: H05B41/04
Filed: 1976-02-18
Abstract: 1529755 Control systems for discharge lamps PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 18 Feb 1976 [21 Feb 1975] 06371/76 Heading H2H An arrangement for starting and feeding a high or low pressure gas and/or vapour discharge lamp has a normal starting mode and a further mode in which a few high voltage peaks are supplied if the lamp fails to start normally. The lamp 5 is in series with a stabilizing inductor 3 and is bridged by a starting circuit in series with a further inductor 9 and comprising components 22, 26, 31, 33 and 37 connected substantially as shown. As described, capacitor 26 charges via resistor 24 and Zener diode 25, until bidirectional voltage sensitive element 25 breaks down, turning on transistor 22 whereupon current flows through the lamp electrodes 4, 6 by way of resistor 20, primary winding 21 of a transformer and the conductive transistor 22. When this current reaches a constant value, the drive for the transistor disappears, the transistor then becoming non-conductive whereupon the voltage across capacitors 7, 8 increases to increase the voltage across the lamp when the lamp should normally start. In the case of difficult lamp a capacitor 37 receives a charge by way of resistors 31, 36 until it achieves the breakdown voltage of a Zener diode 33 whereupon a transistor 30 becomes conductive to short circuit the capacitor 26. In this condition the conduction of transistor 22 is delayed which results in a greater rise of voltage across capacitors 7, 8 and the lamp 5 to ensure the starting of the difficult lamp. In the event of an unacceptably high voltage across the lamp, resistors 39, 40 and a diode 41 render transistor 30 continuously conductive to render transistor 22 inoperative. The breakdown element 28 renders the starting operation ineffective when the lamp is operating normally. Transistor 22 may be replaced by a triac.
Patent GB-399395-A (GB)
Title: Improvements in or relating to jacquard mechanism controlled knitting machines
IPC: D04B15/70
Filed: 1933-03-02
Abstract: 399,395. Knitting-machines. DUBIED ET CIE SOC. ANON., E., 1, Place du Port, NeuchÔtel, Switzerland. March 2, 1933, Nos. 6397 and 6398. Convention dates, March 4, 1932, and March 26, 1932. [Class 74 (ii).] In a jacquardcontrolled machine for knitting pearl or other flat work the knitting members, jacks, &c. selected during their advance movement by the direct engagement of pattern-controlled elements are thereby moved into positions where they can be acted on by cams on the cam carriage. The jacks &c. 4 are provided with tail butts 4a which ride over those elements 31 that are selected and raised by the jacquard. Locking means 32 secure these elements in raised positions. A tappet 25 operated by a plunger 26 prevents the un- .selected jacks from moving back. The latchopener brushes operate alternately. At the end of each traverse one brush is taken out and the other is put in action. When in action the bristles are inclined at an acute angle to the needle bed and extend nearly perpendicularly to the needles.
Patent GB-434201-A (GB)
Title: Apparatus for feeding sheets of glass on to a conveyor
IPC: B65G49/06
Filed: 1934-02-28
Abstract: 434,201. Endless - belt conveyers. PILKINGTON BROS., Ltd., Tower Buildings, Water Street, Liverpool, and GASKELL, J., Stockswell, Hard Lane, St. Helens, both in Lancashire. Feb. 28, 1934, No. 6435. [Class 78 (i)] Apparatus for feeding glass sheets to a conveyer comprises a support and a feeding conveyer, the support being adapted to turn from an approximately vertical receiving position to an approximately horizontal delivering position to transfer partly the weight of the glass to the feeding conveyer. As shown, a slat conveyer 1 to which the sheets of glass are to be fed is connected to drive a feeding conveyer comprising belts 4 passing over pulleys 5, 6 and supported by rollers 7. In front of the pulleys 5 is a pivotally mounted shaft 15 carrying arms 17 which are provided with blocks 18, each having a ledge 19 and rollers 20 on one face. The shaft 15 is provided with a disc 23 formed with four notches 24 adapted to be engaged by the end of a rod 25 to determine the position of the arms 17. The rod 25 at its lower end is connected to a counterweighted foot lever 27 to which is also connected a lever 32 provided with a side stop for the glass sheet. With the arms 17 in the position shown in Fig. 2, a sheet of glass is placed to rest on the lower ledge 19 against the rollers 20. To deliver the sheet to the conveyer the foot lever 27 is momentarily depressed and the arms 17 are turned about the axis of the shaft 15 until the rod 25 engages the next notch 24 on the disc 23. The sheet is then partly supported by the belts 4 which transfer it over an idle roller 22 to the conveyer 1. A further quarter turn of the arms 17 brings them again into position to receive a glass sheet, which this time rests on the opposite side of the blocks 18 to that used with the first sheet.
Patent GB-663400-A (GB)
Title: Improvements in or relating to wire-tensioning tools
IPC: F16G11/12
Filed: 1949-03-09
Abstract: 663,400. Wire strainers. ATLAS STONE CO., Ltd., and LEACH, C. H. C. June 1, 1950 [March 9, 1949], No. 6463/49. Class 45 [Also in Groups X and XXX] A wire tensioning tool comprises a housing 2 adapted to be aligned with and to receive an end of a wire to be tensioned, a traction, gripper 1 for the wire, arranged in the housing 2, means 3, 18 for applya desired tractive force to displace the gripper and the housing relative to each other to exert a straight pull on the wire through the gripper, means 5 for indicating'the magnitude of the tractive force and means for indicating the displacement of the gripper with respect to the housing. The housing 2 is slidably mounted inside a cylinder 3 and contains a wire gripper 1 of the type described in Specification 651,556, [Group XXX], which is mounted inside a cylindrical member 14. The member 14 is attached by a tube 17 to the remote end of the cylinder 3. A piston 18 having glands 19, 20 closes the end of the housing 2 inside the cylinder 3 and liquid pressure on the piston from a reciprocating pump 22, 23, 27 through a non- return valve 25 causes the gripper 1 to be displaced relative to the housing 2. The free end of the housing 2 has a fitting 4 attached to it by a spring clip which contains an anchoring gripper 1a and this fitting in use, abuts against an anchor platefrom which protrudes the wire to be strained the end of the wire being engaged by both of the grippers 1, 1a. The gripper 1 is provided with a pair of levers 12 which protrude through a slot in the housing 2 and by which the wire can be released from the gripper. A gauge 5 indicates the pressure applied to the wire and its elongation is indicated by markings on the housing 2 where it protrudes from the cylinder 3. The pump is contained in a liquid reservoir 24 with which it is connected by a ball valve 26 and a manually controlled needle valve is provided between the cylinder 3 and the reservoir to release pressure in the cylinder. The Provisional Specification states that the displacement of the gripper 1 relative to the housing 2 may be accomplished by spring means.
Patent GB-1285442-A (GB)
Title: Improvements in or relating to electrical conductors using superconducting material
Inventor: TAYLOR MALCOLM THOMAS
IPC: H01L39/14
Filed: 1969-08-11
Abstract: 1285442 Superconductors; cables CENTRAL ELECTRICITY GENERATING BOARD 11 Aug 1969 6539/72 Divided out of 1285441 Headings H1A and H1K A superconductor comprises a laminar structure of thin continuous layers of a first type II superconductor having a transition temperature T CA  separated by layers of a second superconductor having a lower transition temperature T CB  so that its rate of change of critical current with temperature is positive or for the same critical current density less negative than that of the first superconductor at the operating temperature. The layers have a thickness between 0-05 and 1-0 microns. As shown, Fig. 1, an A.C. power cable comprises two coaxial tubes 21, 25 of Cu or Al coated with laminated layers 22, 26 of superconductors having different transition temperatures, on top of which are provided laminated layers 23, 27 of a type II superconductor and a dielectric or resistive material. In layers 23, 27 the superconductor may be Nb or a Nb alloy (e.g. Nb-Zr) and the spacing material may be stainless steel, a Cu-Ni alloy, a brass, silicon monoxide, or niobium oxide. The gap between the tubes may be evacuated or filled with high pressure helium, spacers are provided to support the tubes and the cable is surrounded with thermal insulation and cooled to a cryogenic temperature. Under fault conditions the laminated superconductor layers 22, 26 exhibit a rate of change of critical current with temperature which is positive or less negative than that of the higher critical temperature material due to flux pinning at the interfaces. This improves the magnetic field stability under fault conditions. The operating load current is carried by the laminated layers 23, 27 which exhibit a higher critical current density than the layers 22, 26. Layers 22 and 26 may be provided by alternately sputtering Nb in an atmosphere of N to produce a niobium nitride coating and an inert atmosphere to produce a Nb coating. Layers 23 and 27 may be produced by depositing alternately by sputtering coatings of niobium nitride and silicon monoxide. In a modification, Fig. 2, each of the laminated . load conductor layers is replaced by a single layer of load superconductor. The high stability layers (32, 36) are of laminated coatings of Nb and Nb-Ta and the load current layers (33, 37) are of Nb. The arrangement may be produced by stacking appropriate foils, wrapping round a mandrel, placing in a Cu can and warm extruding followed by cold drawing to the required size. A plurality of materials having different transition temperatures may be used for the lower transition temperature coatings. A multiple phase cable can be produced by mounting several coaxial conductor pairs in a common thermal enclosure or by forming a multiple coaxial structure in which the superconductor layers are formed on both the insides and the outsides of some of the support tubes.
Patent GB-669616-A (GB)
Title: Improvements in or relating to devices for electro-mechanical differential power transmission with continuous change of speed by means of an auxiliary variable frequency
IPC: B60L9/28
Filed: 1946-01-03
Abstract: 669,616. Control of two motors. WANNER, M. Jan. 3, 1946. [Jan. 12, 1945] No. 6558/50. Divided out of 669,530. Glass 38 (iii). [Also in Group XXXV] A load shaft is driven at variable speed by one element of a differential gear, the other two elements of which are, respectively, driven by A.C. motors, one being supplied at constant frequency and the other at a variable frequency obtained from an auxiliary variable-speed alternator or frequency converter. In the traction system shown in Fig. 1 an axle 10 is driven through a differential gear 35 by motors 33, 36 the former of which is supplied with three phase current, of the same frequency as the single phase trolley conductor current.38, by a synchronous phase converter 29. The last also supplies a. frequency converter 31 through which the motor 36 is fed The speed of the frequency converter is controlled by a Ward- Leonard set 3, 6, 15 either alone or in combination with a differential gear 5. The excitation of generator 3 may be varied automatically in accordance with axle speed, or with current in the Ward-Leonard loop. Machine 29 may be wound for the trolley conductor voltage and, when the vehicle is passing over an un-electrified track, may be engine-driven.
Patent GB-867611-A (GB)
Title: Improvements in or relating to electrical networks for producing pre-selected harmonics and sub-harmonics
IPC: H03B19/16
Filed: 1958-02-28
Abstract: 867,611. Frequency changing. TELEFONAKTIEBOLAGET L. M. ERICSSON. Feb. 28, 1958 [March 20, 1957], No. 6621/58. Class 38 (2). A circuit for providing harmonics and subharmonics of the fundamental frequency (6 kc/s.) of an input signal comprises a series circuit L 1'  C 1  across input terminals 1, 1<SP>1</SP> and a circuit comprising an inductor L 2 , a load R 1  and a rectifier D across the inductor L 1 , the rectifier D possessing a large capacitance which varies with current flow. This rectifier may be germanium layer rectifier or the emitter-base part of a transistor. Subharmonic frequencies (3 kc(s.) are obtained across R 1 . Multiples of this subharmonic (9, 12, 15, 18 kc/s.) may be obtained across a load R 2  in parallel with the rectifier D, and when this is required the load R 1  may be made zero. A capacitor C 2  across the rectifier D is only an adjusting means for providing the required frequency spectrum and better stability. The resistive load R 1  may be replaced by a parallel resonant circuit tuned to the desired subharmonic.
Patent GB-681922-A (GB)
Title: Improvements in or relating to tread plates
Inventor: BILLINGHAM LOMAX GIDEON
IPC: E04F11/16
Filed: 1950-03-16
Abstract: 681,922. Non-slipping treads. BILLING- HAM, Ltd., J. March 15, 1951 [March 16, 1950], No. 6666/50. Class 20(iv) A non-slipping tread for steps &c. comprises a metal plate 10 having pockets 11 to receive independently replaceable rubber tread members 15, the plate 10 being screwed at 18 to an undersurface, and the tread members being clamped between the latter and the flanges 13 surrounding the pockets 11. Spherical recesses 19 impart resilience to the tread members, the upper faces of which are ribbed or formed with projections 16. The tread members may be formed in various colours.
Patent GB-805280-A (GB)
Title: Improved draughtsman's implements case
IPC: A47B19/00
Filed: 1957-02-28
Abstract: 805,280. Artists' appliances. EDMUNDS, N. J. Feb. 28, 1957, No. 6681/57. Class 11 [Also in Group XVII] A draughtsman's case comprises a removable lid 12 having secured to its inner surface at a small angle a drawing board 29, whereby the lid acts as a support for the board in use. The case.may have a removable inner lid 15 forming a compartment for paper, the latter being held in place by elastic strips 17. The lid 15 may have clamping means for drawing instruments as shown. A pencil box 30 may be secured to the lid 12.
Patent GB-765622-A (GB)
Title: A new or improved assembly of spraying devices adapted to be mounted upon vehicles and operating at high pressure
IPC: A01M7/00
Filed: 1955-03-08
Abstract: 765,622. Spray-producers. ETABLISSEMENTS ULYSSE FABRE. March 8, 1955 [Jan. 12, 1955], No. 6712/55. Class 69 (3). A spraying assembly mounted on a vehicle or trailer includes main tanks 1, 2 containing different liquids and an auxiliary tank 9 containing chemical concentrate &c. connected by piping to a control valve 4. A piston pump 3 on the outlet side of the valve delivers liquid to nozzles 5 or 10 under the control of valves 6 and 11 respectively. A relief valve 7 delivers excess liquid to the suction side of the pump. By the control of valves 4 and 12 liquid may be fed to one or more nozzles 5 from one or both tanks 1, 2 with or without chemical concentrate &c. from the tank 9, or chemical concentrate may be delivered from tank 9 only. For fire extinguishing purposes a suction nozzle 8 may be inserted into a liquid source and, by control of the valves, the liquid drawn up by the pump through the nozzle 8 may be delivered to the nozzles 10. Stirring propellers 14 are provided in the tanks 1 and 2.
Patent GB-605191-A (GB)
Title: Improvements in liquid-cooled pistons for internal combustion engines
IPC: F01P3/08
Filed: 1945-03-17
Abstract: 605,191. Pistons. MUNTZ & CO., Ltd., A., and BEALE, E. S. L. March 17, 1945, No. 6762. [Class 122 (i)] In an internal-combustion operated free piston machine the free piston assembly comprises a power piston 1, 2, with a conical head 28 and a ring of pockets of circular section 43 rigidly connected by a tubular trunk 4 to a compressor piston 5 which operates a cylinder 6 and is guided on a water-cooled tubular guide 12 which co-operates with a self-aligning bush 14 housed within the compressor piston 5. An oil supply tube 33 conveys cool oil under pressure to the nozzle 37 which directs the oil against the conical head 28 of the power piston 1. Due to acceleration oil is flung from end to end of the piston, a quantity being retained at each oscillation by an annular channel 27 formed by a dam tube 24, the piston skirt 2 and the radial flange 23, surplus oil from which, passing through the drain holes 38, and prevented from interfering with the directed oil jets by the splash gland 40, is carried away through the drain tube 29 integral with the dam tube 24, to a receptacle 41 in the end cover 13 having a discharge valve 42.
Patent GB-402634-A (GB)
Title: Improved means for anchoring the bladders of foot-and like game-balls within their casing
IPC: A63B41/08
Filed: 1933-03-06
Abstract: 402,634. Inflated balls. SYKES, Ltd., W., Westfield Road, Horbury, and WYCHERLEY, W. J., Ashbourne Villa, Springstone Avenue, Ossett, both in Yorkshire. March 6, 1933, No. 6764. [Class 132 (ii).] An inflated game-ball, e.g. a football, waterpolo, volley, basket or punch ball, has its bladder anchored to the casing by lacing passing through a part of the bladder valve. In the construction shown in Figs. 1, 2 and 4 the bladder 6 is anchored to the casing 5 by two laces 1, 2 and 3, 4 passing through holes 1<d>-4<d> and holes 1<c>-4<c> in leather flaps 11 and 10 respectively through apertures in which the valve-head 7 is passed, through holes 1<b>-4<b> in the valve-head 7 and through holes 1<a>-4<a> in the cover. The lacing is then continued through holes on opposite sides of the slot 12 through which the bladder is originally inserted. In lacing up the slit 12 the usual lacing awl is used and the principle known as double lacing is employed, i.e. through each one of the lacing holes the lace is passed twice in opposite directions, lacing being commenced adjacent the valve opening and continued towards the end of the slit. The leather flap 10 protects the bladder from the lacing awl. After the lacing has been drawn up tight the bladder is inflated, access to the valve orifice 14 being obtained through the valve opening 13 in the cover 5 and the valve being prevented from receding from the casing by the method of lacing employed. In the case of balls in which the lacing must not show on the outside, e.g., water-polo balls, a leather panel 15 is stitched to the casing 5 in the vicinity of the opening 13<a> for the valve 8 which is situated at a part of the casing different from the insertion slit usually diametrically opposite the slit. The panel 15 is provided with four lacing holes registering with those in the casing 5, valve head 7 and flaps 10 and 11. Lacing is effected by two laces 1, 2 and 3, 4, the lacing being confined to the space between the casing 5 and the panel 15, the ends of the laces being cut-off flush at the holes 1<a>-4<a> in the casing. After lacing has been effected the bladder insertion slit may be stitched, seamed or hooked up and inflation effected.
Patent GB-671743-A (GB)
Title: Improvements in or relating to cable clamps
IPC: H01R4/36
Filed: 1950-03-20
Abstract: 671,743. Cable couplings. WEBSTER, C. J., and ANSON, W. E. March 20, 1950, No. 6872/50. Class 38 (i). A cable connector comprises a slotted body 10 one end of which is bent into.a hook 11 terminating at the slot 13 and the other end has threaded therein a hollow bolt 15 carrying a clamping plate 20b provided with a lip 20a at the side near the slot, the clamping plate being anchored to the bolt by a drivescrew 19 so that on rotating the bolt the plate can be slid towards or away from the slot. In a modification, Fig. 3 (not shown), a locking washer is inserted between the plate and the bolt in order to absorb vibration. Specification 336,664, [Class 38 (i)], is referred to.
Patent GB-845568-A (GB)
Title: Improvements in or relating to devices for use in pneumatic suspensions
IPC: B60G17/052
Filed: 1958-03-04
Abstract: 845,568. Maintaining road-vehicle height constant FABBRICA ITALIANA MAGNETI MARELLI S.p.A. March 4, 1958 [March 5, 1957], No. 6896/58. Class 108(2). A valve mechanism for controlling the supply of air to road-vehicle pneumatic suspension springs (not shown) is effective in response to only a stage of change in vehicle height. A lever L connected at O to an axle of the vehicle carries an arm 2 on which is mounted a roller 3. The latter bears on a suitably shaped recess S of a rocker 4 having arms 4<SP>1</SP>, 4<SP>11</SP>, each of which acts on a respective sockets 6, 6<SP>1</SP> slidable in a cylinders S\ S<SP>2</SP>, against the action of a springs 7, 7<SP>1</SP>. The sockets 6, 61 function as dashpot pistons in surrounding liquid which is thereby forced from a chamber C<SP>1</SP> (or C<SP>2</SP> as the case may be) beneath the cylinders S' S<SP>2</SP> through a restricted orifice 13, 13<SP>1</SP> (Fig. 2) adjustable by rotatable plugs V<SP>2</SP>, V<SP>1</SP>, to a reservoir 14. The cylinders S', S<SP>2</SP>, each carries a push rod 9, 9<SP>1</SP> adapted on a predetermined degree of travel to unseat a valve Ve (in respect of the rocker arm 4<SP>1</SP>) or a valve Vs (in respect of the rocket arm 4<SP>11</SP>). In operation, on decrease in vehicle height, lever L moves in a direction to depress rocker arm 4<SP>1</SP> which operates with dashpot action of the piston S<SP>1</SP>, to depress the push rod 9 and lift the valve Ve. This permits air from a pressure conduit Te to lift a valve Vr and flow via a conduit Ta to the vehicle springs. The shape of the recess S of the rocker 4 is such that more than a predetermined degree of movement of the lever L results in no further deflection of the rocker. On return of the lever L to central position, there is no dashpot action due to lifting of a valve 15. On increase in vehicle height, the rocker 4<SP>11</SP> is similarly actuated to result in lifting of the valve. Vs. This permits release of air from the springs to atmosphere via a passage Ts.