baber/WOPTO huggingface dataset:
Patent GB-289769-A (GB)
Title: Improvements in or relating to the locking of railway tracks or points
IPC: B61L17/00
Filed: 1928-02-23
Abstract: 289,769. Siemens & Halske Akt.-Ges. April 30, 1927, [Convention date]. Interlocking-apparatus .-The track lever or track-signal lever is arranged to be released electrically as soon as a shunting train has passed the first set of points in the set track provided that other points in the track, which are not yet run over, are in their locked position. At each points a relay R1 - - R4 is connected across the rails and controls a contact K1, K8, K9, K10, respectively in the circuits of the lever-lock magnet F and the relays Z2, Z3, Z4. Relays Z2, Z3, Z4 control the points-locking means 02, 03, 04 of the points W2, W3, W4, and each has a second circuit over its own armature which is closed by a contact on the relative signal when at danger. Thus when shunting is done while the signal is at danger, the relays Z2, Z3, Z4 are not de-energized. Contacts K3, K4 closed by the locking elements are in series in the circuit of the track-lever locking magnet F with the contact K1 which is closed by the falling off and resetting of the armature of the relay R1 by means of an auxiliary relay in the manner described in Specification 272,156.
Patent GB-1124473-A (GB)
Title: Improvements in or relating to pillows of foamed material
Inventor: BROCKENSHAW HARVEY
IPC: B68G7/02
Filed: 1966-02-09
Abstract: 1,124,473. Pillows. PRICE BROS. & CO. Ltd. 2 Feb., 1967 [9 Feb., 1966], No. 5780/66. Heading A4M. [Also in Division B5] A pillow is made from two superimposed layers 3, 4 of weldable foamed material by welding these layers together along a line 7 spaced inwardly from the peripheries thereof and enclosing the welded layers in a fabric case, e.g. of cotton. As shown in Fig. 1, layers 3, 4 of polyether or polyurethane foam are located on a base plate 1 by posts 2 secured thereto. A platen 5 is lowered until a high frequency electrode 6 comprising brass strips compresses the layers 3, 4 along a line 7. The electrode 6 is energized and welding effected. Subsequently, the platen 5 raised and release of the pressure exerted by the electrode 6 causes the pillow to assume the shape shown in Fig. 3. In a modification (not shown), the electrode 6 is replaced by a welding bar heated directly or indirectly by steam through the platen 5. Prior to welding, a layer of resilient material may be positioned between the layers 3, 4 and within the confines of the line 7.
Patent GB-465915-A (GB)
Title: High frequency transformer for coupling thermionic valve amplifiers
IPC: H01F19/04
Filed: 1936-02-26
Abstract: 465,915. Valve amplifying circuits. RADIOAKT.-GES. D. S. LOEWE. Feb. 26, 1936, No. 5793. Convention date, Feb. 27, 1935. [Class 40 (v)] A carrier frequency amplifier handling a wide band of frequencies as for television employs a transformer having the primary and secondary self tuned by adjusting the number of turns in conjunction with the inherent capacities of the connected circuits and with a fixed coupling such that a double humped resonance curve is obtained with the peaks spaced apart in frequency by an amount equal to or greater than the width of the frequency band transmitted. The coupling may be varied to adapt the coupling to a desired frequency band and damping resistances may be employed to substantially eliminate the peaks. Fig. 2a shows an arrangement in which a coupling condenser 14 is provided in addition to the -capacity 7 between the windings to aid the magnetic coupling at the higher frequencies, series resonance occurring in the circuit of this condenser and the tapped portion of the secondary coil The whole of the capacitive coupling is preferably obtained by the inherent capacities between the windings. The Specification gives details of transformer dimensions to obtain required inherent capacities. Fig. 4 shows a coupling to a pushpull detector 19 wherein the ratio of the secondary coil diameter to the primary coil diameter is made greater than 1.5 and the coils are axially adjusted and the axial length of the secondary is equal to or greater than the length of the primary coil, so that equal voltages are applied in exact phase opposition to the detector. Specifications 446,346 and 457,773 are referred to.
Patent GB-687006-A (GB)
Title: Improvements in and relating to electro-magnetically operated rotation reversing means
IPC: B65H45/101
Filed: 1950-03-08
Abstract: 687,006. Tentering-machines. DUNGLER, J. March 8, 1950. [March 22, 1949] No. 5852/50. Class 42 (i). [Also in Group XXIV] The threaded control spindle 1 of the intake correcting means of a tenter is driven through rotation-reversing means (see Group XXIV) in which a flexible disc armature 4 of magnetic material and low moment of inertia, keyed to an extension 1a of spindle 1, is adapted to be clutched selectively to one of two electromagnetic flywheels 7, 8 loosely mounted on extension 1a and driven continuously in opposite directions by a motor 15 through belts 11, 12, one of which is crossed and the other straight. Spindle 1 engages a nut on the inlet rail 2 of the tenter. Movement of a feeler device 26 sensitive to the position of the cloth selvedge causes electromagnets 5 or 6, carried by flywheels 7, 8 respectively, to be energized through brushes 18, 19 ,or 23, 24 and thereby clutch disc 4, to flywheel 7 or 8, whereby spindle 1 is rotated in a direction to effect the necessary adjustment of rail 2. The arrangement described is provided at both sides of the cloth ; a single motor may be used to drive all four flywheels. Specification 581;321 is referred to.
Patent GB-385788-A (GB)
Title: Improved method of forming abrasive articles
IPC: B24D11/00
Filed: 1932-02-26
Abstract: 385,788. Making abrasive articles. GARNER, E., 17, Duffield Road, Pendleton, Salford, Lancashire, and CARBORUNDUM CO., Ltd., Trafford Park, Manchester. Feb. 26, 1932, No. 5859. Addition to 330,322, [Class 60, Grinding or abrading &c.]. [Class 60.] The method of forming abrasive articles set forth in the parent Specification is modified by spraying the adhesive while it is carried in a solvent medium so as to delay the setting and prevent chilling of the adhesive on the surface being treated. In the case of water-soluble adhesives such as glue the medium may be humid air, or steam, while for spraying lacquers the medium may be solvent-saturated air. A sheet of material passing over a roller 1 has an abrasive coating 2 secured to a. base 3 by adhesive 4. The adhesive may be contained in a receptacle 5, and the carrying medium projected from a valve 8 carries the adhesive discharged from a nozzle 6 on to the material thus applying another adhesive layer 4, after which a further abrasive layer may be applied. The abrasive may be supplied from a hopper (not shown).
Patent GB-366746-A (GB)
Title: Conveyor driving gear
IPC: B65G27/00
Filed: 1931-02-26
Abstract: 366,746. Jigging conveyers. ANDERSON BOYES & CO., Ltd. and SHIELD, J. B., Flemington Electrical Works, Motherwell, Lanarkshire. Feb. 26, 1931, No. 5981. [Class 78 (i).] Driving gear which is adapted to be housed within a confined gear box occupying minimum head room and contrived to effect a substantial movement of the reciprocatory member, comprises a unidirectionally rotating driving shaft 1, a crank shaft 2, reduction gear 13 .. 16 between the shafts 1, 2, a rock shaft 3 deriving oscillatory movements from the shaft 2, a final oscillatory member 4 wrapped by, or connected to, a tension rope, or ropes, connected to the conveyer, and multiplying gearing 9, 8 between the shaft 3 and the shaft 5 of the member 4. When a single rope is used, its opposite ends are connected to spaced points on the conveyer, and the rope is wrapped round the member 4, but when two ropes are used, the ends of each of them are connected to the conveyer and member 4 at spaced points. A crank pin 10 on the shaft 2 is connected by a rod 11 to an arm 12 on the shaft 3.
Patent GB-585658-A (GB)
Title: Improvements in and relating to travelling grate stokers
IPC: F23K3/00
Filed: 1940-04-03
Abstract: 585,658. Travelling grates. MACHINEFABRIEK GEB. STORK & CO., N.V. April 3, 1940, No. 6024. Convention date, April 13, 1939. [Class 51 (i)] In a travelling grate stoker, plates 9 extending across and below the front portion of the grate are provided with extensions 12, 13, 14, 15 sliding in guides and movable by pinions 25 on shafts 23, 30 engaging with racks 26 so as to vary the supply of air to the front portion of the grate from the air chamber 10.
Patent GB-805792-A (GB)
Title: Improvements in or relating to electrical resistors
IPC: H01C7/02
Filed: 1956-02-27
Abstract: 805,792. Temperature-sensitive resistors. WELWYN ELECTRICAL LABORATORIES Ltd., and BROWNING, J. Feb. 27, 1956, No. 6024/56. Class 37. A temperature-sensitive resistor comprising an oxide of titanium, is produced by heating a mixture of materials including a solid reducing- agent, in a neutral atmosphere, to 1100- 1250‹ C. to form a titanium suboxide. The solid reducing agent may consist of carbon, ferrous oxide, ferrosilicon or a hydrocarbon such as paraffin wax. In one example, 91.5 per cent of magnesium titanate, 3.67 per cent of ground borosilicate glass, 0.25 per cent of acetylene black and 4.58 per cent of talc were mixed with a little of a dispersing agent such as " Teepol " (Registered Trade Mark) in water, milled, filtered, dried, ground and pressed into suitable shapes, and fired in a nitrogen atmosphere at a temperature of 1150‹ C. The magnesium titanate may be produced by firing a mixture of rutile and magnesium carbonate at 950-1150‹ C. The resulting body has low porosity.
Patent GB-784042-A (GB)
Title: Interferometer
IPC: G01B9/02
Filed: 1956-02-27
Abstract: 784,042. Optical apparatus. ZEISS-STIFTUNG, C., [trading as ZEISS, C [firm of]]. Feb. 27, 1956 [March 4, 1955], No. 6026/56. Classes 97(1) and 97(2) An interferometer comprises a surface dividing and reuniting the light rays, mirror surfaces rigidly connected to the dividing and reuniting surface and a reflecting surface inclinable relative to the dividing and reuniting surface, the surfaces being so arranged that the divided light rays traverse substantially the same path in opposite directions. The device may be used to indicate when the reflecting surface is in a certain position as in a level. Fig. 3 shows a level comprising prisms 10, 11 framing between them a surface 12 dividing an incident beam 13 into beams 13<SP>1</SP> and 13<SP>11</SP> reflected the one by surface 14, reflector 30 and surface 15, and the other by surface 15, reflector 30 and surface 14, the beams being reunited by surface 12 to form a beam 17 in which interferance effects can be observed if necessary with the interposition of a polarizer. The reflector 30 is supported by a pendulum 32 pivoted at 31 so as to be maintained horizontal and lack of perpendicularity between the reflector 30 and the surface 12 being shown in the interferance fringe system. The reflector 30 may be replaced by a liquid surface or by a reflector floating as a liquid surface. In the modification shown in Fig. 7 the divided beams are incident on and totally reflected by the upper surface 89 of a liquid 88. The interferometer may be used to determine the position of one surface of a polygonal rotatable mirror.
Patent GB-563072-A (GB)
Title: Improvements in or relating to door holders
IPC: E05C17/50
Filed: 1943-04-15
Abstract: 563,072. Door holders; automatic catches. CHEREMETEFF, S.W. April 15, 1943, No. 6044. Convention date, April 15, 1942. [Classes 44 and 65 (i)] A door holder is shown in plan in Fig. 1 and elevation in Fig. 2, and comprises a hook-type catch 3 pivoted on a vertical pin 4 in a box 1 fixed to the floor &c. The catch is projected by a spring 8 to engage the front of the door 6 and is retracted by a pedal lever' 13, 15 engaging a slot in the catch.
Patent GB-564933-A (GB)
Title: Improvements in or relating to containers for gramophone needles and like articles for use in recording and reproducing sounds
IPC: B65D75/54
Filed: 1943-04-15
Abstract: 564,933. Containers for gramophone needles &c. CHAPMAN, W. T., [trading as CHAPMAN & SONS]. April 15, 1943, No. 6063. [Classes 18 and 94 (i)] A container for gramophone needles and like means for recording and reproducing sounds comprises two cardboard &c. straps 8, 9 faced with paper and hinged together, member 8 being slotted at 13 and member 9 having holes in alignment with the slots into which the gramophone needles &c. are placed so that they lie in part in the slots 13. When the composite member 8, 9 is placed as shown, the gramophone needles &c. are presented for convenient removal. A resilient celluloid, metal, &c. backing 15 serves to connect the composite member 8, 9 to an outer casing 6. Metal, wood, synthetic resin or papier machÚ may be used for the container.
Patent GB-609239-A (GB)
Title: A milling machine for surfacing very broad members
IPC: B23C1/06
Filed: 1946-02-27
Abstract: 609,239. Milling-machines. BERTHIEZ, C. W. Feb. 27, 1946, No. 6114. Convention date, March 7, 1945. [Class 83 (iii)] A multiple spindle milling machine of the planer type comprises a movable cross-member supported on a stationary cross-beam and carrying spindle-operating units which can slide in recesses in the cross-beam. The stationary cross-beam 4, Fig. 1, is secured to uprights 3 on a base 1 having guides for a reciprocating work-table 2, and has bores 9a in which slide the columns 8 of a cross-member 7 and also staggered bores 5 in which spindleoperating units 6 carried by the cross-member can slide. Means are provided for locking the spindle units to the cross-member, the crossmember to the cross-beam, and the crossbeam to the spindle units so that each spindle unit can be set at the required level relative to the cross-member and then, by moving the cross-member, they can be set simultaneously at the required level above the work-table. The locking means may comprise levers 9, Fig. 5, operated by an electro-magnet 11 and having a shoe 12 bearing on the member to be locked; the spindle unit may comprise a casing 26, Fig. 4, carrying an electric motor 24, driving a cutter 20 and an electric motor 27, driving a cooling fan 28.
Patent GB-305385-A (GB)
Title: Improvements in or relating to cornets, trumpets, and like musical instruments
IPC: G10D9/04
Filed: 1928-02-28
Abstract: 305,385. Perry, E. J. Feb. 28, 1928. Cornets, trumpets, &c.-In a cornet, trumpet, &c. provided with a rotary transposing-valve a associated with a main tuning-slide b, the slides j, k of the piston valves l, m are adjusted simultaneously with operation of the valve a, by means of connecting-rods h, i adjustable by screws n and secured both to the slides j, k and to the operating lever d of the valve a.
Patent GB-1419476-A (GB)
Title: Apparatus for exerting a pull on a cable or conduit
IPC: F16L1/06
Filed: 1974-02-11
Abstract: 1419476 Endless conveyers for hauling cable or conduit VISSER EN SMIT BV 11 Feb 1974 [15 Feb 1973] 06146/74 Heading B8A A cable X &c. is gripped between opposed runs of two conveyer belts 18, the cross-sectional shape of which is shown shaded in the left hand portion of Fig. 1. The working run of the lower belt is supported in a main frame 1 by rollers 13 (one of which is driven by a motor 15) at each end and intermediate small-diameter rollers (not shown). A similar arrangement of rollers for supporting the upper belt is carried on a frame 2 which is vertically slidable on two pairs of rods 3 and 10. The pair of rods 3 are each pivotally mounted at 4, and the rods 10 are each releasable by a bayonet catch fastening (not shown) from engagement with a socket portion 11 of the lower frame 1. Thus by releasing the rods 10, the frame 2 may be swung away from the lower frame 1 to the position shown in broken lines in Fig. 3. This enables the cable X to be placed in position on the rollers 13, 13. On returning the frame 2 to its operative position, arms 26 rigid with eccentrics 24, 24 at each end of the conveyer are turned through 180 degrees from the position shown in Fig. 3 to a position (Fig. 2, not shown) in which the eccentrics bear on springs 9 and thereby load the upper belt against the cable. A sleeve 27 slides into engagement with both arms 26 so as to lock the latter in the spring- loading position.
Patent GB-398169-A (GB)
Title: Improvements in mountings for roller spindles
IPC: B26D7/26
Filed: 1932-03-01
Abstract: 398,169. Roller-spindle bearings. BINGHAM, A. and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. March 1, 1932, No. 6190. [Class 12 (i).] Bearings for roller spindles are constructed so that a turning couple is applied to the mounting to compensate for the spring of the roller due to the passage of the work, for example, in machines for cutting cardboard. As shown, a roller spindle 5 is mounted on ball bearings 6, 7 separated by a distance-piece 8. A screw 10 is in threaded engagement with a frame member 9 and bears against the bearing 7, and a screw 11 passes freely through the member 9 and is threaded into a housing 12 for the bearing 6. Upward thrust of the work on the roller is resisted by screwing the screw 10 downwards and the screw 11 upwards. In a modification, one of the bearings is replaced by a saddle.
Patent GB-942683-A (GB)
Title: Improvements in or relating to variable attenuators
Inventor: HELSDON PETER BENNETT
IPC: H03F3/16
Filed: 1961-02-21
Abstract: 942,683. Transistor circuits ; volumn control. MARCONI CO. Ltd. Sept. 11, 1961 [Feb. 21, 1961], No. 6323/61. Headings H3T and H4R. An attenuator comprises a unipolar transistor T1 as a variable resistance element, the resistance between its drain and source being varied by a bias applied to its gate through a resistor 3. The attenuator may be an L network, with the transistor in the series arm as shown, in the shunt arm, Fig. 2 (not shown), or with two transistors, one in the series and one in the shunt arm, Fig. 3 (not shown), the two biases being varied oppositely. Alternatively, a bridged T network may be used, Fig. 4 (not shown), with one transistor in the shunt arm of the T, and one in the bridging arm, or a bridge circuit employing a transistor in either one or two arms, Figs. 5, 6 (not shown).
Patent GB-538245-A (GB)
Title: Improved method of producing light-sensitive layers sensitised by means of an iron salt and layers made thereby
IPC: G03C1/64
Filed: 1940-04-08
Abstract: 538,245. Photographic materials containing light-sensitive iron salts. PHILIPS LAMPS, Ltd. April 8, 1940, No. 6348. Convention date, April 11, 1939. [Class 98 (ii)] A light-sensitive layer is produced on a support, preferably water-impermeable, by suspending a water-soluble light-sensitive iron salt in a solution of a water-insoluble binding agent in a volatile organic liquid, in which is preferably also suspended a substance necessary for the development of the image, and applying the dispersion to the support and evaporating the organic liquid. The substance to be suspended and the dispersion medium may be jointly ground together in a ball mill. In an example an aluminium plate is coated with a suspension of ferric ammonium citrate and potassium ferricyanide in a solution of cellodammar resin in carbon tetrachloride, the solvent is partly evaporated at 80‹C., the excess suspension is poured off, and the solvent is completely evaporated. After exposure under a negative and rinsing with water a blue positive image is obtained. In another example the suspension contains in place of potassium ferricyanide, silver nitrate and tartaric citric, and oxalic acids. A greyish black image is obtained. In another example the aluminium plate is coated with a suspension of ferric ammonium oxalate, potassium ferric citrate, and oxalic acid in a solution of cellodammar resin in benzene. After exposure, bathing is effected in a 1 per cent. solution of ammonium persulphate in water followed by rinsing with water. In a further example, the plate is coated with a suspension of ferric ammonium citrate, silver nitrate, and tartaric acid in a solution of polyvinyl acetate in ethanol. The finished images may be protected by a layer of celluloid lacquer. Other supports referred to are metals other than aluminium, glass, cellulose acetate, rubber, rubber derivatives and paper. Other binding agents referred to are polymerized hydrocarbons such as polystyrene, polymerized unsaturated fatty acid esters such as derivatives of acrylic acid and its homologues, viny acetic acid, and resins and gums such as ester gum, mastic, and colophony. Other volatile organic solvents referred to are toluene and trichlorethylene. Specification 166,063, [Class 98 (ii)], is referred to.
Patent GB-701353-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B27/22
Filed: 1952-03-12
Abstract: 701,353. Sewing -machines. PFAFF AKT.-GES., G. M. March 12, 1952 [March 16, 1951], No. 6365/52. Class 112 Feed, reversing. The usual feedreversing mechanism is, controlled by a depressible plate 2 mounted in the table carrying the machine for actuation by the operator's forearm to avoid the need for taking a hand away from the work. In the arrangement shown, the plate 2 is carried by. an arm on a rock-shaft 6 connected to the usual feed-control lever 20 through a spring-returned rod 9.
Patent GB-1261771-A (GB)
Title: Apparatus for producing synchronisation in address-coded communication sytems
Inventor: GUANELLA GUSTAV
IPC: H04K1/00
Filed: 1969-02-06
Abstract: 1,261,771. Radio signalling. PATELHOLD PATENTVERWERTUNGS - UND ELEKTRO-HOLDING A.G. 6 Feb., 1969 [12 Feb., 1968], No. 6464/69. Heading H4L. In a communication system the transmitted carrier is frequency-switched in steps over time t such as in Fig. 2 providing a series of parallel lines B 1 , B 2  &c., on each of which a number of carrier frequencies lie in a manner peculiar to each receiver to provide address-coding. In order to synchronize the receiver to this switching; initially the receiver operates in a search mode scanning for example, the frequencies K1, K2, K3 along parallel lines B1, B2 &c. until coincidence is reachedalong line A and the search programme is terminated. The receiver then changes over to a frequencyswitching programme which is in accordance with and in synchronism with that of the transmitter.
Patent GB-312965-A (GB)
Title: Improvements in balanced rudders
IPC: B63H25/38
Filed: 1928-03-01
Abstract: 312,965. Scholz, W. March 1, 1928. Rudders.-A balanced rudder in which the axis of the rudder spindle coincides with the axis of the rudder post and the rudder body surrounds the rudder post, is constructed so that the rudder post is removably fitted in the stern frame whereby the rudder and the post can be removed without lifting. The post b is connected by flanges c, d, with the stern frame a and the balanced-rudder g is pivotally mounted thereon in bearings e and f. The front portion m of the rudder and the rear portion k are of stream line section and removably connected together. Preferably the rudder is hollow and partly buoyant.