baber/WOPTO huggingface dataset:
Patent GB-176964-A (GB)
Title: Improvements in or relating to air compressors
IPC: F04B39/06
Filed: 1921-01-17
Abstract: 176,964. Palmer, W. D., and Palmer, J. F. Jan. 17, 1921. Valves, arrangement of.-In an air-compressor in which an air-chamber communicating freely with the atmosphere or connected by a pipe to the inlet valve surrounds the lower part of each cylinder, and air is admitted to the chamber through ports uncovered by the piston at the bottom of its stroke, the air-chamber is formed on the cylinder below the water-jacket. The compressor shown comprises a cylinder let into the top of a main casing A which is provided with diaphragms H, H', forming with the lower part of the cylinder an annular chamber G to which air is admitted by a large pipe or open mouthpiece J, and from which the cylinder is supplied through ports K uncovered by the piston at the end of its down-stroke. Alternatively, the air inlet chamber may be formed on the cylinder below the water-jacket F which is formed with an extension F' at the top, occupying the space of the usual inlet valve and cooling the air discharged through the outlet-valve casing E. The air-inlet chamber may be provided on a compressor having its inlet valve in the cylinder head, a pipe leading from the chamber to the inlet valve.
Patent GB-1498551-A (GB)
Title: Ski attachment for mounting on an aircraft undercarriage having wheels disposed in tandem
IPC: B64C25/66
Filed: 1976-01-21
Abstract: 1498551 Aircraft undercarriages MESSIERHISPANO 21 Jan 1976 [28 Jan 1975] 02347/76 Heading B7G An aircraft undercarriage has tandem wheels 2, 3 mounted on front and rear struts 4, 5, and a ski 15 which has an aperture 16 for the passage of the wheels. The ski is articulated to the front strut 4 by means of a pair of resilient shock absorbers 17, 18 located one on either side of the front wheel, and is articulated to the rear strut 5 by means of a pair of links 32, 33 located one on either side of the rear wheel. Also provided at the rear are a pair of lockable jacks 34, 35 when the wheels are to be used the ski is raised by extending the jacks 34, 35. Rollers (39), Fig. 2 (not shown), mounted on the ends of the front-wheel axle 13 abut the ski to limit its upward movement relative to the wheels. The complete undercarriage is retractable (Fig. 8, not shown). Each shock absorber comprises a body 24, Fig. 4, having a cylindrical bore, a hollow cylinder 25 slidably mounted in the bore and connected at its upper end 26 to the axle 13, and a further hollow cylinder 27 located coaxially within the cylinder 25 and rigidly connected at its lower end to the body 24. Seals 29, 30 are provided between the cylinders to define a pressurized-gas-receiving chamber 28. A spring (not shown) may be used instead of compressed gas.
Patent GB-265211-A (GB)
Title: Improved warping mill for winding warp beams
IPC: D02H1/00
Filed: 1927-01-27
Abstract: 265,211. Bellingeri, M. Jan. 28, 1926, [Conventlon date]. Yarns, warping and beaming.-The, bobbins 5, Fig. 8, are carried in sheet metal carriers 4, contained in metal trays 2, Fig. 1, in columns 1 each divided into several compartments. As shown, the carriers are arranged in duplicate, the thread from the connected bobbins in one carrier passing over a support 6 at the end of the tray partitions to the bobbins in the other (reserve) carrier, so that these can be brought into operation when required. The warp beam can thus be wound with a variable number of threads. Each thread passes through a fixed eyelet 12, Fig. 9, and around a hook 11 thence through a spiral 8 connected to an oscillatable weight 9 furnished with a finger 10. When the tension of the thread increases owing to the smaller diameter of the bobbin, it rocks the hook 11 and this engages the finger 10 and rocks the weight 9. When the tension of the thread decreases as it unwinds from the larger diameter of the bobbin, the weight restores the hook to its original position, and the thread is subjected to a constant tension. When the thread breaks, the hook 11 contacts with a strip 13 whereby an electric circuit is closed and a detector lamp is lit. When the thread is overstrained the hook 11 rises to the level of the hook 12 and releases the thread, so that the hook 11 contacts with the strip 13 also in this case. The threads next pass to a distributor comprising pins or hooks on bars 17 - - 20, Fig. 5, which are pivoted to vertical bars 14, 15, 16. These are adjusted to and from each other according to the spacing desired to be given to the threads. These next pass to rollers 23, Fig. 16, arranged alternately with tension rollers 26 and afterwards are wound on to the warp beam 27, some threads passing over a rail 28 and some over a rail 29 the threads also passing if required through spacing healds.
Patent GB-588854-A (GB)
Title: Improvements relating to laundry pegs
IPC: D06F55/00
Filed: 1945-12-28
Abstract: 588,854. Clothes pegs. WEST, M. L. M. and STRAUSZ, H. J. Dec. 28, 1945. No. 2465. [Class 44] Rubber clothes pegs having jaws a, b separated by a slit c, and with wings or finger-pieces d which, when pressed together, open the jaws, are provided with leaf springs tending to open the wings and close the jaws, the spring e being embedded in the rubber as shown, or disposed in and fitting the recess f between the wings, in which case the spring may be plated or otherwise treated to prevent rust. The pegs may be cut from rubber sheet or moulded. In the latter case the wings may be of harder or less elastic material than the jaws. As shown, the slit c ends in a circular aperture g to prevent splitting of the material above it.
Patent GB-535962-A (GB)
Title: Improvements in tail-stocks for precision grinding machines or lathes
IPC: B23B23/00
Filed: 1940-02-09
Abstract: 535,962. Grinding. LUND, Ltd., J., and SCAIFE, J. D. Feb. 9, 1940, No. 2529. [Class 60] [Also in Group XXII] A precision grinding machine has the tailstock centre 6 carried on a member 5 supported solely by laminated springs 7, 7a which are anchored to parallel rods 3, 4 and which yield only in a direction axial of the centre. The centre may be withdrawn by a yoke lever 8a.
Patent GB-489617-A (GB)
Title: Improvements in and relating to projection screens
IPC: G03B21/60
Filed: 1937-01-28
Abstract: 489,617. Projection screens. DARIMONT, L. Jan. 28, 1937, No. 2541. [Class 97 (i)] Several groups of three sheets are used in combination to form a screen ; each group comprises a reticulated sheet between two transparent sheets of cellulose acetate &c., the inner surfaces of the transparent sheets being frosted and the others polished, and all the surfaces being formed with a number of small salients, concavities, undulations, &c. Each transparent sheet 1 in a group may have convexities on one face and concavities on the other, or may be of zigzag section, or, as shown in Fig. 3, a sheet of one form may be used with a sheet of the other form in the same group. The reticulated sheet 4 may be cotton tulle, or may be cellulose acetate with frosted, or matte, plane or irregular surfaces, having a network of dull white or light coloured lines impressed thereon by ink or varnish applied by a roller. The number of groups assembled to form a screen may be varied, e.g. seven groups may be used, and the sheets may differ in form in different groups. Fig. 7 shows a screen wherein the groups are backed by a reflective sheet 7 having an opaque or nearly opaque metallized surface, corrugated transparent sheets 6 having polished surfaces are placed between groups, and the front sheet of the front group is omitted. The density of the lines on the sheets 4 may increase from the front to the back of the screen.
Patent GB-1018371-A (GB)
Title: Switching system for producing a continuous signal from a plurality of signal intervals
IPC: G11B15/14
Filed: 1964-01-21
Abstract: 1,018,371. Switching circuits for magnetic playback heads. RADIO CORPORATION OF AMERICA. Jan. 21, 1964 [Jan. 31, 1963], No. 2647/64. Heading G5R. A switching system for switching the heads of a video playback apparatus comprises input means adapted to receive a plurality of input signals corresponding to separate regularly spaced intervals of a single message signals, first switching means for combining the input signals into a continuous signal, second switching means for combining the input signals into a second continuous signal which is identical to the first except that any distortion due to switching is displaced in time relative to similar distortion in the first signal, and a third switching means for combining the first and second continuous signals into a single continuous output signal free of distortion. In Fig. 1 the magnetic heads 10-13 scan successively transverse or longitudinal tracks on a tape 14 and the signals detected are passed to a switch 15 which combines signals from non-overlapping heads and passes then over lines 18 and 19 to the two switcher units 20 and 21. Units 20 and 21 switch the output from one head to another during the overlap period and each produces a continuous output signal which is demodulated in respective demodulators 23 and 24, the input signals being frequency modulated. Units 20 and 21 are controlled by a timing circuit 17, controlled in turn by a tone wheel 16 or by a signal on tape 14, and a delay circuit 22 causes switches 21 to operate later than switches 20. Consequently distortions in the output F of demodulator 24 due to switching occur later than the similar distortions in the output E of demodulator 23. Switching unit 25 is arranged to select the signal F until after the time of the switching distortion in signal E and to select signal E before the time of distortion in signal F; it then switches back to signal F some time after the distortion in signal F. This system is particularly useful for playback of non-synchronous signals but may also be used for synchronous signals such as television signals.
Patent GB-777713-A (GB)
Title: Circuit arrangement and means for the optical indication of the tuning condition of radio receiver circuits
IPC: H03J3/14
Filed: 1954-01-29
Abstract: 777,713. Electron beam apparatus. STANDARD TELEPHONES & CABLES, Ltd. Jan. 29, 1954 [Feb. 3, 1953], No. 2750/54. Class 39(1). [Also in Group XL(c)] In an optical tuning arrangement for a radio receiver for both A.M. and F.M. signals, the tuning condition with A.M. is indicated by the area of the screen illuminated, whereas on F.M. the area illuminated indicates the signal strength and the tuning condition controls either the brightness of part of the illuminated area or, alternatively its position on the screen. In one embodiment, Fig. 4, the shadow angle in a " magic eye " tube is controlled, both on A.M. and F.M. signals, by a voltage derived from the receiver A.V.C. line and applied to the grid G2 of a triode D.C. amplifier the anode A of which is directly connected to a deflecting electrode S. Points a, b are connected to either side of the discriminator and are coupled through filter networks C1, 2 R3, 4, balancing resistors R1, 2 and rectifiers Ge1, 2, to a grid G1 controlling the beam current of the tube. The arrangement is such that the brightness of the screen rises to a maximum when the receiver is in tune, and falls on either side of the correct tuning point. Another embodiment, Figs. 5-6, uses a tube with a pair of beam controlling grids Ge, f, interwound and located end-on to a further grid G which is connected to the cathode of the indicator tube. The grids Ge, fare connected over filter networks R3, C3 and R4, C4 respectively to the points a, b in a ratio detector circuit, which are bridged by equal resistors R1, 2 the common point of which is earthed. A voltage proportional to signal strength is applied from one side of the detector circuit to the grid GT of a D.C. amplifier which controls the potential of deflecting electrode S. In this arrangement, on F.M. detuning causes part of the illuminated area of the screen to be reduced in brilliance, Fig. 7 (not shown). In an alternative tube construction, Figs. 8-10 (not shown) the grid G is omitted and grids Ge, f cover the whole cathode area, being in the form of a pair of half-grids arranged side by side : with this arrangement, on F.M. detuning causes one or the other of the two illuminated areas to be reduced in brilliance, according to the direction of mis-tune. In a further embodiment, Figs. 11, 12 a pair of beam deflecting electrodes S1, 2, connected to the anode A, are provided. The grids are replaced by a pair of control rods Se, f so that the beam, which contains a central bright area Z is deflected to one side or the other according to the direction of mis-tune.
Patent GB-657206-A (GB)
Title: Wheels for vehicles
IPC: B60B11/06
Filed: 1949-02-01
Abstract: 657,206. Vehicle wheels. TRIGGS, W. W. (Wingfoot Corporation). Feb. 1, 1949, No. 2761. [Class 144 (i)] A wheel comprises a main load-supporting disc formed in three segments 1 welded together along radial lines 5, from which the segments diverge to circumferentially-spaced rim-centring portions 6, and to the hub 2 at 4. A closuredisc 12, welded to the inner end of the hub, is formed with a step 14 on which the brakedrum 15 is bolted and a flanged outer edge to support the rim-seats 6. As shown, the disc segments 1 are stiffened by radial and circumferential ribs 25, 26.
Patent GB-900409-A (GB)
Title: Tierable and end-nestable receptacles
IPC: B65D21/04
Filed: 1960-01-26
Abstract: 900,409. Stackable receptacles. LOCKWOOD, W. A. Jan. 26, 1960 [Feb. 2, 1959], No. 2764/60. Class 18.  A tray capable of being stacked and nested with similar trays by horizontal movements relative to another tray comprises interconnected bottom and side portions forming at least one open side 34, rigid with which portions are tray tiering means and also clearway forming means for receiving the bottom of a like tray so that it can be inserted laterally through the open side to nest. In one embodiment, Figs. 1, 3, 5, the bottom 31 is composed of a solid panel or board strips, and inclined front struts 60, 61 are secured to members 52, 58c and 53, 58b respectively, while lower tiering portions are indicated generally at 37 and upper tiering portions at 38. The methods of nesting and stacking are apparent from the drawings. Another embodiment is of wire construction, and yet another has a pallet-type bottom portion and angle-iron members forming the tray tiering means. Still another embodiment described is again of wire construction, differing from the second form in detail. The trays may be mounted in slides in a delivery truck.
Patent GB-824174-A (GB)
Title: Method and composition for fixing a photographic transfer image
IPC: G03F7/06
Filed: 1956-01-27
Abstract: 824,174. Photolithography. POLYCHROME CORPORATION. Jan. 27, 1956 [Feb. 2, 1955], No. 2777/56. Class 98(2) An image transferred to a lithographic plate is treated with an aqueous solution of a trivalent single metallic salt and a soluble organic acid which does not form a precipitate with the cation of the salt, to harden the image and make it inkreceptive. Thus a soft image comprising a silver bromide-gelatin mixture may be transferred by pressure to water-proofed paper carrying a hydrophilic layer comprising a mixture of starch carbamate and a filler and treated with a hardening solution containing water, ethylene glycol, monobasic ammonium phosphate, phosphoric acid, aluminium chloride and tannic acid of which two mixings are exemplified. Other soluble aluminium salts and soluble ferric and chromic salts and other acids such as pyrogallic and citric acids may be used but the aluminum chloridetannic-acid pair, to which a claim is directed, is preferred. A prior process of hardening a transferred image by light action and then successive treatments with pyrogallic acid and acetic acid is described. Specifications 655,274 and 732,114 are referred to.
Patent GB-414389-A (GB)
Title: Improvements in or relating to pistons
IPC: F02F3/02
Filed: 1933-01-28
Abstract: 414,389. Pistons. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.- (Aluminium, Ltd. ; Canada Life Building, Toronto, Canada.) Jan. 28, 1933, No. 2780. [Class 122 (i).] The minimum thrust face of a trunk piston is separated from the head by a horizontal slot 15 and slit by a vertical slot 161 terminating short of the open end of the skirt. The slot 16<1> may be formed in a rib 16. Strengthening webs 11, 12 may be provided and the skirt may be recessed at 17 adjacent to the bosses. Specification 414,390 is referred to.
Patent GB-107356-A (GB)
Title: An Improved Electric Lift System.
IPC: B66B11/04
Filed: 1917-02-26
Abstract: 107,356. Waygood-Otis, Ltd., (Otis Elevator Co.). Feb. 26, 1917. Winches; brakes. - The electromotor M, Fig. 1, for driving a lift, rotates the hoisting drum H through worm gearing G and is driven by alternating current supplied through the leads D, D<1>, D<2>. The direction of rotation of the motor M is controlled by electro-magnetic reversing-switches R, R' actuated from the lift by a switch S. A worm wheel 3, Fig. 2, carried loosely on the main motor shaft 1, is rotated through a worm 2 by a reversible auxiliary motor X, and is secured to electro-magnetic brake apparatus B. The brake shoes 5 are released electrically, and are applied by springs 7 to the brake pulley P which rotates with the shaft 1. The auxiliary motor circuits are controlled by switches 8, 9, pivotally mounted on the lift c, and actuated by cams 10, 11 fixed in the lift well at the landing L. Auxiliary back contacts 12, 12<1> on the switches R, R<1> act in conjunction with the switches 8, 9 to control the auxiliary motor circuits. If the lift is descending and the switch S is centered too late to arrest the car at the desired landing, the switch 9 is closed by the contact of the roller 9<1> and the cam 11, and current is supplied to the motor X. The brake-shoes having been applied when the switch S was centered, the main motor shaft is now rotated through worm gearing 2, 3 at a comparatively slow speed, and the lift is returned to the landing. When the lift is at the level of the landing, the roller 9<1> rides off the cam 11, and the supply of current to the motor X is stopped. Similar action occurs if the lift under-runs the landing.
Patent GB-853181-A (GB)
Title: Fishing reel carrying a removable spool
IPC: A01K89/01
Filed: 1958-01-28
Abstract: 853,181. Bobbins. MEULNART, A., and M.E.P.P.S. MANUFACTURE D'ENGINS DE PRECISION POUR PECHES SPORTIVES. Jan. 28, 1958 [March 8, 1957], No. 2860/58. Class 120(3). [Also in Group VI] A spool 6 for a fishing line has a flat end wall 13 with radial lugs 14 and is removably secured to a carrier 7, having a flat end wall 16 and a plurality of locking flanges 18 spaced by the thickness of the radial lugs 14 from the end wall 16. The end wall 16 is secured to the cylindrical wall 20 of the carrier by three supporting flanges 17 which are located in the plane between the end wall 16 and the locking flanges 18. One end of each supporting flange 17 is shaped to form with the adjacent end of a locking flange 18 an arcuate notch for receiving the lugs 14 of the spool. The other ends of the supporting flanges 17 are located beneath the locking flanges 18 and form stops for the lugs 14. The spool 6 is slid over the hub 7a of the carrier and the lugs 14 passed into the arcuate notches; the spool is then rotated so that the lugs 14 are wedged between the locking flanges 18 and the end wall 16 of the carrier. The end of the fishing line is threaded through a hole 19 in a lug 14.
Patent GB-930327-A (GB)
Title: Improvements in or relating to an activator for an electric cell or battery
IPC: H01M6/38
Filed: 1961-01-23
Abstract: 930,327. Syringes. YARDNEY INTERNATIONAL CORPORATION. Jan. 23, 1961 [Jan. 26, 1960(3)], No. 2691/61. Classes 8(2) and 102(2).  An activator for a dry-charged electric battery comprises a reservoir 10 containing a liquid electrolyte and having an outlet 11 at one end to permit the flow of electrolyte into the battery, a rupturable metallic diaphragm 12 closing the outlet and a pivotably mounted cutter 15b to rupture the diaphragm. A bladder 34 clamped to the other end of the reservoir is inflatable by gas from a cartridge 32 to cause the electrolyte to leave the reservoir, In operation, a switch 28 closes an electrical circuit to a squib 38 which forces a plunger 37 on to the lever arm 15a of the cutter so that the cutter slits the diaphragm. Simultaneously, current in leads 26a, 26b melts a wire 29 releasing a bail 21 of spring wire which then rotates, strikes and breaks a tabulation 20 at 20<SP>1</SP>, unblocking a nipple 19 so that the gas from the cartridge fills the bladder. In a modification, Fig. 7 (not shown), the lever arm is bifurcated and straddles the neck of the plunger; the plunger is moved by a coil spring when released by a lanyard and swings the cutter against the diaphragm shortly before breaking the nipple. In Fig 4 (not shown) the nipple extends through a slot in the plunger. 930,331. Air filters. AMERICAN MONORAIL CO. Feb. 25, 1960 [Aug. 6, 1959], No. 6659/60. Class 8(2). [Also in Group IX] Reverse suction flow cleaning of each of a pair of flat filter screens 30, Fig. 2, extending across tubular ducts 16 serving to connect a travelling suction fan casing 12 to hoses 17 and nozzles 19 for removing lint from the floor adjacent a row of spinning machines 1 (see Group IX) is effected when a door 35 adjacent the upstream side of each filter screen is automatically opened thereby allowing said screens to engage the ends of fixed suction hoses 53 which are connected by a heater 52 and vertical hose 51, to a combined suction fan and list storage chamber 50. In a modification lint is collected on the uppermost face of the screen 30<SP>1</SP>, Fig. 6 (not shown), and reverse flow suction air is provided through upwardly extending branch ducts 53<SP>1</SP> connected to the header of a vertical hose 51<SP>1</SP> disposed at the side of the row of machines and beyond the adjacent movable hose 17. Specification 930,332 is referred to.
Patent GB-691424-A (GB)
Title: Improvements in the production of succinic acid
IPC: C07C51/14
Filed: 1951-02-07
Abstract: Succinic acid is prepared by allowing carbon monoxide and water to act at elevated temperature and super-atmospheric pressure on acrylic acid or its salts in the presence of complex cyano compounds of nickel, cobalt or iron in an alkaline medium.  If desired, the acrylic acid or its salt may be formed in situ by using acetylene as the starting material.  Specified catalysts are "Belucci" salt, potassium tetracyano nickelate, or the corresponding complex salts of other alkali metals or alkaline earth metals, of other bivalent metals such as zinc, cadmium or mercury or of ammonia as well as the ammine compounds; mixtures of compounds, e.g. alkali metal and nickel cyanides capable of forming such complexes, and also the corresponding complex iron and cobalt complexes may be used, e.g. potassium ferrocyanide. The catalysts may be supported on pumice, silicic acid gel, aluminium oxide or the like.  Temperatures of 60-200 DEG  C. and pressures of 30-200 or more atmospheres may be used.  Preferably, a solvent is present, e.g. excess water or a water-miscible ether or ketone or saturated hydrocarbon.  The gaseous reactants may contain inerts.  By-products formed in the process include compounds containing keto groups and those resulting by addition with by-product hydrogen.  In examples: (1) carbon monoxide is reacted with sodium acrylate in water containing potassium nickel cyanide and potassium carbonate in a heated autoclave and the product is then acidified and the succinic acid extracted with ether; (2) carbon monoxide and acetylene are fed into a heated autoclave containing an aqueous solution of potassium carbonate and potassium nickel cyanide and the product is filtered to remove nickel cyanide and polyketone, distilled to remove cyclo-pentanone, hydrogenated and after being acidified is distilled to remove propionic acid leaving succinic acid as residue.