baber/WOPTO huggingface dataset:
Patent GB-752015-A (GB)
Title: Improvements in or relating to a car coupler
IPC: B61G3/04
Filed: 1954-05-04
Abstract: 752,015. Automatic couplers. NATIONAL MALLEABLE & STEEL CASTINGS CO. May 4, 1954 [May 11, 1953], No. 12922/54. Class 103 (5). To prevent the lock of an automatic coupler from being inadvertently returned to the lockset position after it has been removed from this position during uncoupling, the thrower is arranged to rock about a transversely disposed axis X, X. The thrower is supported on a horizontal pad 37 adjacent its trunnions and on a pad 36 adjacent the arm 40 so that with the thrower CG at G and the thrower free it will rock rearwardly so that the lock seating surface 64 will be disposed above and rearward of the lock-set seat 62 on the lock 18. In the locked or lock-set position of the coupler the thrower is rocked forwardly under the weight of the lock. The upper surface of the pad 36 may be sloped to resist movement of the thrower arm 20 towards the lock 18.
Patent GB-1529374-A (GB)
Title: Optical wave guide
IPC: G02B6/126
Filed: 1976-03-31
Abstract: 1529374 Controlling light waveguides COMMISSARIAT A L'ENERGIE ATOMIQUE and AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 31 March 1976 [2 April 1975] 12941/76 Headings G2F and G2J An optical waveguide in which a TE and TM propagating mode are phase matched comprises a first guiding layer, a second contiguous layer of lower refractive index, and, on the surface of the second layer remote from the first layer, a metallic type complex refractive index coating which is preferably reflective, the thickness and refractive indices of the layers being selected to produce the phase matching. As explained in detail in the Specification, the provision of the coating at the correct distance from the guiding layer adjusts the phase differences experienced by the TE and TM modes upon reflection at the interface between the first and second layers so that they become equal, this also enabling resonant exchange between the modes. Mode conversion may be produced by application of a longitudinal or transverse electric field (using variable birefringence of a guiding layer of KDP, the length so affected acting as a half wave plate), or by using the Faraday effect with a guiding layer of a suitable magnetic garnet. Reference is also made to the use of ultrasonic waves and mechanical deformation for mode conversion, but without details. As particularly described, a magneto-optical mode converter comprises a Gd-Ga garnet substrate on which a (GdY)-(FeGa) garnet guiding layer and a second layer of silica are deposited. The directions of the unconverted TE and the converted TM modes at the output of the guiding layer are different.
Patent GB-919125-A (GB)
Title: Improvements in and relating to diazotype photo-copying apparatus
IPC: G03D7/00
Filed: 1958-04-24
Abstract: 919,125. Photographic printing and developing apparatus. OZALID CO. Ltd., and HALDEN, J. G. B. April 23, 1959 [April 24, 1958], No. 13004/58. Drawings to Specification. Class 98 (2). In a diazotype photocopying apparatus wherein the sheets are conveyed through an exposure section and a developing section by at least one endless flexible conveyer belt, the belt or at least one of the belts is provided with one or more ribs integral with or attached to the belt, which rib or ribs extend longitudinally of the belt and engages grooves in the rollers or surfaces over which the belt is taken. The exposure section may comprise a transparent cylinder rotating around a light source and round which the original and light-sensitive sheets are conveyed in contact by a belt or series of narrow parallel belts, according to the invention. The developing section may comprise a tank with an aperture or perforated side through which developing gases pass and over which the material is conveyed by an endless sealing belt, the belt being constructed with ribs at either edge which engage in grooves in the guide rollers. In addition, the tank may be provided with one or more internal belts of vapour-passing material which contact the sealing belt in the region of the aperture in the developing tank. These internal belts also may have ribs according to the invention.
Patent GB-921177-A (GB)
Title: Motor control circuit
IPC: H02P23/00
Filed: 1961-04-11
Abstract: 921,177. Automatic speed-control systems. MINNESOTA MINING & MANUFACTURING CO. April 11, 1961 [April 11, 1960], No. 13046/61. Classes 38 (4) and 35. To maintain the speed of a D.C. motor 70, e.g. driving a magnetic tape capstan, constant relative to that of an A.C. synchronous " control" motor 11, a signal whose frequency is proportional to the sum of the speeds is compared with that from a crystal oscillator 39 in a discriminator 35 whose output, after amplification, supplies the armature 80 of the D.C. motor. This armature may comprise a printed circuit on each face of a disc and the motor field may be permanent magnets 87 (Fig. 1, not shown) disposed axially of the armature. The speed signal is derived from a tachometer comprising two toothed rotors, an inner one 90 on the D.C. motor shaft 82 and an outer one 91 coupled by webs 60 to the A.C. control motor. The capacitance between the rotors fluctuates as the teeth pass one another; a potential is applied across the rotors and the resulting fluctuation in charging current is used as a measure of their relative speeds. They are arranged to rotate in opposite directions, so that, in one instance, the control motor may be stationary and the D.C. motor speed corresponds directly to the frequency of the oscillator 39. Other selected speeds may be obtained by running the control motor at various speeds ; as shown, this is done by selection of a suitable oscillator 21 . . . 24 to control a power amplifier 30 supplying this motor, but in an alternative arrangement one oscillator is used and its frequency selectively subdivided. In the latter case, to obtain suitable D.C. motor speeds, the reference frequency oscillator 39 is made variable, its control being ganged to the speed selector switch. The speed of the A.C. control motor may itself be stabilized by the arrangement shown in dotted lines in Fig. 4,in which a similar tachometer is used but with the outer rotor held stationary so that its signal is proportional to the actual speed of the motor.
Patent GB-1517114-A (GB)
Title: Sintering machine
IPC: F27B21/06
Filed: 1977-03-22
Abstract: 1517114 Sintering machines HEAD WRIGHTSON & CO Ltd 22 March 1977 [31 March 1976] 13076/76 Heading F4B In a sinter strand comprising a number of linked pallets guided as a continuous band over an upper track 3 and a lower track 4 and lifted or lowered between the tracks by end wheels 10, 12, the lifting and lowering wheels 10, 12 are not driven and the strand is driven by a wheel 20 downstream of the pallet lifting wheel 10. The upper and lower tracks overlap at the ends 7, 8, and the feed end of the tracks and the lifting wheel is mounted on a movable carriage biased towards the opposite end of the strand by a chain 17 and counterweight 18.
Patent GB-332901-A (GB)
Title: A measuring pump for liquids
IPC: B67D7/70
Filed: 1929-04-27
Abstract: 332,901. S. I. A. M., Ltd., and Guermont, M. E. April 27, 1929. Air, removing; buckets; single - acting b u c k e t pumps; measuring devices; pipes; priming. - In a measuring pump for petrol &c. of the kind in which the discharge stroke of the piston in the measuring chamber simultaneously draws in a new charge behind the piston, an air pump 15, 16 is operated by the piston 7 to prime the suction pipe 1 and remove air from the chamber 2, the volume of petrol or petrol and air drawn by the two pumps being in excess of the volume delivered. The measuring chamber 3 may form with the suction pipe 1 or the delivery pipe 4 a U- chamber in which the petrol is retained by gravity while the pump is not working. The petrol passes through a non- return valve 14 in the pipe 1 and enters a chamber 3. During the upstroke of the piston 7, the petrol in the chamber 3 passes through the valves 8, 12 in the piston, and during the downstroke these valves close and the liquid is delivered through a chamber 6 and pipe 4 to the discharge pipe 20. The valve 8 is carried by the piston rod 9 and forms a loose connection between the piston and rod. A connection between the top of the delivery pipe 4 and the suction pipe 1 is controlled by a float valve 21 to prevent syphoning.
Patent GB-1242814-A (GB)
Title: Internal combustion engine ignition timing arrangement
Inventor: TOOKER ROBERT SEAMAN
IPC: F02P5/10
Filed: 1970-03-19
Abstract: 1,242,814. Timing ignition. GENERAL MOTORS CORP. March 19, 1970 [April 1, 1969], No.13325/70. Heading F1B. The invention relates to an ignition timing arrangement for a drive in which a transmission with charge speed gearing is connected between an engine and a drive member which is connectable to a load. The engine ignition system has a vacuum unit which is connected by a conduit to an air induction passage of the engine and is operable to advance or retard the timing of the ignition in response to pressure changes in the passage and a valve in the conduit is arranged to close the conduit when a low gear of the transmission is engaged and open the conduit when a high gear is engaged.
Patent GB-133580-A (GB)
IPC: H02P1/02
Abstract: 133,580. Bray, E. N., and Bray, Markham, & Reiss. Jan. 31, 1919. Controllers with sliders on rotating arms; with no-volt release.-A motor-starter has a base a and arm b of magnetic material; the arm carries at its end pivoted contact fingers h, i arranged so that one finger tip will engage a fixed contact before the other finger tip leaves the preceding contact. The no-volt coil e is placed on the pivot d of the arm b and acts as a blow-out coil. The fixed contacts may have roller contact surfaces mounted on insulated pillars, but the final contact has a fixed conducting-tube mounted on a split pillar and held tight by a cone-shaped screw. An additional no-volt coil may be placed on the final contact, and an overload cut-out may be provided.
Patent GB-165623-A (GB)
Title: Improvements in or relating to electrical cells
IPC: H01M6/32
Filed: 1920-05-14
Abstract: 165,623. Mummery, C. S., and Ever Ready Co. (Great Britain), Ltd. May 14, 1920. Cells; gas exits.-A dry cell of the inert type is provided with one or more tubes F extending from the bottom of the cell into a space G at the top. When the cell is rendered active by the introduction of water through the filling-tube E, the air in the cell escapes through the tubes F, percolation of the water through the active material B being thus facilitated. The space G is open to the atmosphere through a vent C<2>.
Patent GB-1423988-A (GB)
Title: Assembly suitable for use in keeping accounts
IPC: B42D12/00
Filed: 1972-03-22
Abstract: 1423988 Labels AJK MANAGEMENT GROUP Ltd 16 Feb 1973 [22 March 1972] 13382/72 Heading B8F [Also in Division B6] An assembly for use in recording information, consists of a sheet 15 carrying easily removable adhesive strips 16 on one surface and a record card 10, 11 having a plurality of areas each corresponding to one of the strips. The sheet and the card are arranged with respect to each other in such a way that each strip overlies its corresponding area so that removal of a strip results in a change in the information recorded. The assembly shown is for use by a newsagent in recording a customers' payments. The sheet is self-adhesive and perforated into columns 15a-15d which are stuck to columns 12a-12d on the card. Removal of the individual strips indicates payment by the customer. Alternatively the sheet may be transparent and placed adjacent the card in a binder. The removed strip may be forwarded to the customer as his receipt. (For Figure 1 see next page.)
Patent GB-453414-A (GB)
Title: Process for the preparation of chlorine-substituted butanes
IPC: C07C17/278
Filed: 1936-05-12
Abstract: Chlorbutanes are produced by condensing 1,1-dichlorethane with a chlorethylene by means of aluminium chloride.  Examples describe the condensation with vinyl chloride, symmetrical dichlorethylene and trichlorethylene respectively.
Patent GB-442206-A (GB)
Title: Method for the insertion of weft threads in single shoot for needle weaving looms and a thread carrying device therefor
IPC: D03J5/00
Filed: 1934-05-04
Abstract: 442,206. Looms with stationary weft supplies. DEWAS, R., 120, Boulevard de St. Quentin, Amiens, France. May 4, 1934, No. 13535. Convention date, June 2, 1933. [Class 142 (ii)] Relates to looms wherein a conveying element carries weft from a stationary supply part way across the shed to a thread removing or pulling element which takes the weft from the conveying element and places it in the rest of the shed. The conveying element 1, Figs. 1 and 3, is formed at the part 1 with prongs 3, 4 separated by a slot 5 accommodating springy blades 6, 7 in contact with one another for the greater part of their length, and having their free ends bent outwardly at 61, 71 and embedded in the walls of the slot. A metal plate 8 having an angular opening 9 is arranged above the clamping elements 6, 7. The pulling element 2 comprises a part 12 parallel to the reed 11 and an off-set part 13 formed by spring blades 14 normally in contact and curved outwardly at 141. In use, the conveying element engages the weft a extending from the selvage and a weft supply and receives it between the blades 6, 7. A cutter 16 below the blades 6, 7 causes the weft to be severed while the weft end from the edge of the fabric is turned in to form a selvage. The element 1 then meets the oppositely-moving pulling element 2, so that the blades 14 of the latter pass between the prongs 3, 4 of the element 1 and receive that part of the weft extending between the point 9<1> of the opening in the metal sheet 8 and the clamp 6, 7. The weft is thereby detached from the clamp 6, 7 and received between the blades 14. When the elements move apart again the weft is drawn through a slot 10 in the element 1, the free end being retained by the clamping blades 14. When the element 2 returns into the shed after the beat-up, the weft end may be carried into the shed to form a selvage, or a blade adapted to pass between the clamping blades 14 may be provided to cause the weft to be released on the outward end of the movement of the element 2. The cutter 16 is provided with a cleaning orifice 17 in the prong 3, and may be mounted near the edge of the fabric on a support on the loom. The prong 4 is provided with an enlarged part 19 to mask the entrance to the slot 5 and to prevent entanglement with the warps, while the weft thread stretched across the shed is prevented from entering the slot 5 by means such as is described in Specification 410,018.
Patent GB-659463-A (GB)
Title: Improvements in and relating to back-pedalling braking hubs
IPC: B62L5/14
Filed: 1949-05-20
Abstract: 659,463. Driving and braking mechanism for cycles. FIJN-MECHANISCHE INDUSTRIE, BECKER'S SONS, N. V. May 20, 1949, No. 13578. Convention date, June 25, 1948..[Class 136 (ii)] In a back-pedalling braking hub of the kind described in Specification 661,938 the slip coupling is provided with brake shoes 19 engaging an annular groove 20 of the brake actuating and clutching member 10 under the action of a non-rotary split resilient ring 18. The ring has axially projecting parts 18a which are in axially slidable engagement with recesses in the first brake plate 17.
Patent GB-774491-A (GB)
Title: Improvements in or relating to heat producing agents
Inventor: STRAUSS KOSSY
IPC: F24V30/00
Filed: 1954-05-10
Abstract: A heat producing agent comprises a mixture of a reducing agent, such as aluminium or ferro-silicon or mixtures thereof, an amount of oxidizing well below the amount needed to react with the reducing agent to oxidize it completely and above 5 per cent and up to 10 per cent by weight of fluoride selected from alkali metal fluorides and sodium and potassium cryolite to facilitate burning of the reducing agent and lowering of the temperature at which the reaction starts. The oxidizing agent may be selected from potassium, sodium, strontium and barium nitrates, iron oxide in the form of ore or pure synthesised material or by-product such as hammer or rolling mill scale, manganese dioxide or nickel oxide. An organic or inorganic bonding agent, e.g. gum arabic, and inert filler material such as sand may be added and the mixture formed as or embodied in a shaped article.  Specification 774,490 is referred to.
Patent GB-249366-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: B60L15/00
Filed: 1925-05-25
Abstract: 249,366. Jackson, A. H. May 25, 1925. Controlling, actuating; controllers, multiple rocking-bar.-In a motor controller of the type comprising a cam shaft operating separate contactors for cutting out resistance or changing connections, the cam shaft 2 is fitted with a slidable sleeve 3 on which 'are mounted a group of cams 4 for operat. ing forward and reversing contactors 5, 6. The sliding movement is produced by a pivoted fork lever 7 acted upon by two solenoids 13, 14 which, in an electric train, are connected to train wires 15, 16 leading to a, master controller. The control circuits pass through sleeve contacts 19, 20 to a pilot motor 24. A notched interlocking disc 25 prevents movement of the sleeve unless the cam shaft is in the " off " position.
Patent GB-1504561-A (GB)
Title: Roller transport systems
IPC: F16C13/00
Filed: 1975-04-04
Abstract: 1504561 Rollers; bearings D M GARNETT 9 March 1976 [4 April 1975] 13810/75 Headings F2U and F2A A conveyer roller comprises a sleeve 16, Fig. 2, having roller bearings 14 fitted in its ends, each bearing being removably-mountable in a cut-out in a support rail 10 by the provision of a groove 25, Fig. 4, and made of plastics race parts 20, 22 snap-fitted together at 42 to trap balls or rollers 44. The part 36 of the bearing is a push fit into the sleeve 16 which may be made of cardboard, plastics or metal. The support rails 10 may be made of flexible material to permit curvature.
Patent GB-825718-A (GB)
Title: A machine for shearing sheet or strip material
Inventor: BLUCK STANLEY WILLIAM
IPC: B23D19/04
Filed: 1957-05-01
Abstract: 825,718. Shearing. BLUCK Ltd., W. H. April 23, 1958 [May 1, 1957], No. 13831/57. Class 83 (4). A machine for shearing sheet or strip material e.g. metal sheet or strip comprises a body, a pair of shearing rollers e, f, Fig. 3, mounted on the body, means for rotating one of the rollers, an arm k extending from the body parallel to the roller axes and a slide m adjustably mounted on the arm k, which slide m incorporates an abutment surface to guide the edge of a sheet or strip during shearing and a peg q about which a sheet may be moved angularly whilst forming a curved cut. The rollers e, f are mounted on inclined limbs b, c of the body, the latter being either bolted to a base or bench or gripped in a vice. The roller e is freely rotatable, while the roller f is rotated by a hand-operated lever h through a reversible detent i which engages a toothed wheel g keyed to the roller shaft. When making straight cuts the slide m is mounted on the arm k in the position shown at Fig. 3 with a guide o uppermost. The vertical surface of the guide  locates and guides the edge of the strip relative to the cutting rollers, while the strip rests on the horizontal surface. When cutting on a curved path the slide m is inverted to bring a boss p carrying the peg q uppermost. The peg q engages a hole or dimple formed in the sheet r as shown in Fig. 4, the sheet being pivoted about the peg q while making the curved cut. The slide is adjustable longitudinally of the arm k to vary the width or radius cut, and is locked in position by a screw n. A continuous rib d on the body supports the two parts of a cutstrip as they issue from the rollers.
Patent GB-1108687-A (GB)
Title: Ferritic heat-resisting steel
Inventor: SASAKI RYOICHI
IPC: C22C38/22
Filed: 1966-03-29
Abstract: A ferritic heat resisting steel comprises <TABS:1108687/C6-C7/1> the balance, apart from impurities such as As, Sn and Sb, being iron. For a content of vanadium above 0.15% the steel may contain 0.05-0.25% of tungsten.  In Examples the steels may be cooled from 1,000 DEG C. at 100 DEG C. per hour and tempered at 700 DEG C. or oil quenched from 1,100 DEG C. and tempered at 650 DEG C.
Patent GB-273454-A (GB)
Title: Improvements in safety brake devices for pit cages and the like
IPC: B66B5/20
Filed: 1926-06-02
Abstract: 273,454. McQueen, G. June 2, 1926. Catch gear of mine-cage type. -The hoisting rope 4 is connected to the cage 1 by chains 6 and by chains 8 to the inner ends of levers 9 pivoted in slippers 12 engaging the flanges of the T-shaped guides 3 and co-operating with camshaped extensions 9<a> of the levers 9. The inner ends of the levens 9 are connected by links 16 to a cross-bar 17 having a bolt connected to a bar 19 slidably mounted on bolts 18 which suspend the cage from a cross-bar 17<a>. A spring 20 or springs are interposed between the bars 17<a> and 19. When the hoisting rope breaks, the weight of the cage causes the cam extensions of the levers to engage the guides, the spring 20 lessening the suddenness of the application of the grips.
Patent GB-671948-A (GB)
Title: Improvements in or relating to a process for the production of formed bodies, especially plates, of lignocellulose without the addition of a binding agent
IPC: C08H8/00
Filed: 1949-05-25
Abstract: Lignocellulosic material is heated at 172-177 DEG  C. and under a pressure of 7.5-8.5 atmospheres for 2-4 hours with a dilute solution of an alkali, or a substance which forms an alkali, or an alkaline substance capable of neutralizing acid, the proportion of alkali or alkaline substance corresponding to 2-4 per cent by weight of the dry woody substance, so that the treated material has a pH value of 5.5-7, and the material is then defibrated, shaped into a plate or other article, and then dried, or pressed and heated.  The plates or other articles are obtained without the addition of binding agents, i.e. re-inforcing substances capable of increasing the mechanical strength of the fibre products.  If desired, they may be impregnated with waterproofing substances such as paraffin, ceresin, montan wax, or bitumen.  Such a substance may be added in an amount not exceeding 2 per cent.  The alkali or alkaline substance may be caustic soda, calcium hydroxide, or calcium carbonate.  The lignin present in the woody material acts as the binding agent for the defibrated material in the formation of the plates or other articles.  The defibrated material may be dehydrated in a long or round screening machine or in a moulding box.  The fibre fleece may be hot pressed at 160-170 DEG C. under a pressure below 40 atmospheres to form a hard plate, or it may be simply dried to form an insulating board.  In an example, dry pine-wood chips are subjected to vacuum treatment and then boiled for 2 hours under a pressure of 8 atmospheres with 0.3 per cent caustic soda solution.  At the end of the treatment the pH of the lye is 6.1. The treated material is defibrated without damaging the fibres and then impregnated with 1 per cent of a bitumen emulsion.  After adding alum to bring the pH value to 5, the fibre fleece is dehydrated and then pressed under 25 atmospheres pressure at 160 DEG  C. to form a hard plate.