baber/WOPTO huggingface dataset:
Patent GB-822159-A (GB)
Title: Locking apparatus for pivotable windows
Inventor: HAUCK THEODORE
IPC: E06B3/40
Filed: 1956-06-15
Abstract: 822,159. Windows. GENERAL BRONZE CORPORATION. June 15, 1956, No. 31938/58. Divided out of 820,407. Class 20(3) [Also in Group XXV] In a window wherein the sash S is rotatable through 360 degrees on a central vertical axis 9, 10 within the stationary frame F, the sash is automatically locked in its fully closed position by spring- pressed bolts 12, carried by the sash, engaging apertures 26 in the stationary frame jambs 3. The sash is unlocked by forcing the bolts back against their springs by cams 27 on barrel shafts 28 which are rotatable when cranked handles 38, 36 are keyed therein. The movement of the crank handles from the full line positions of Fig. 1 to the dotted line positions (wherein the bolts are fully withdrawn) brings the handles 38 into the path of any possible rotational movement of the sash and limits any such movement to a small amount. Further rotation of the sash is only possible after the handles have been deliberately moved out of this latching position-i.e. the sash cannot be opened sufficiently to allow a person to fall out unless the handles are deliberately moved twice. A pair of weather strips are secured along each edge of the sash.
Patent GB-211577-A (GB)
Title: Appliances for playing a game of skill
IPC: A63F9/00
Filed: 1922-11-23
Abstract: 211,577. Lomas, K. Nov. 23, 1922. Outdoor games.-Apparatus for playing a game comprises " gliders," as shown in the Figures, which are adapted to be driven through the air by fans or bats into a receptacle or through a hoop. The " gliders " comprise a number of feathers or strips of light material a fastened together in the form of a star by means of light metal or cardboard discs b, c, cement being employed, or projections b<1> on one disc may be bent over the other disc to secure the shafts a' of the feathers. A representation d of a glider may be made on the central discs.
Patent GB-788961-A (GB)
Title: Improvements in vacuum-operated master pulsators for milking machines
IPC: A01J5/12
Filed: 1956-10-22
Abstract: 788,961. Pulsators. SEABORNE, T. L. Oct. 22, 1956, No. 32110/56. Class 84. A master pulsator having two coupled diaphragms of unequal area to form an unbalanced system, has two further diaphragms coupled to the first two and acting as valves for controlling the vacuum and pressure cycle which in turn actuates the unbalanced system. Vacuum applied at 39 is communicated to the underside of diaphragm 8 (atmospheric pressure being maintained between the diaphragms in chamber 40) ; thus this diaphragm experiences a downward force. At the same time vacuum builds up in chamber 36 as the air therein bleeds at a rate controlled by a nozzle 35 through 34 and 37. An upward force is thus produced on the diaphragm 9 and the coupled diaphragms 8 and 9 eventually move upwardly when the force on 9 prevails over that on 8. The valve diaphragms 6, 7 then move to the upper position and vacuum is established via 38, 26, 41, 42 in chamber 40 and atmospheric air leaks into 36 via chamber 33 bore 34 and nozzle 35. This eventually brings about a downward movement of the diaphragms to their initial position as shown. The pulsations in chamber 28 are coupled to the relay pulsators by pipe 30. Nozzle 35 may be changed to change the pulsation rate and additional control can be exercised by adding glass beads on a screen 46 to chamber 36 to vary its effective volume.
Patent GB-663952-A (GB)
Title: Improvements in and relating to automatic control devices for aircraft power plants
IPC: B64D47/00
Filed: 1948-12-13
Abstract: 663,952. Jet propulsion plant. LEDUC, R. Dec. 13, 1948 [Dec. 12, 1947], No. 32159/48. Class 110(iii) [Also in Group XXIX] Means for automatically controlling the thrust developed by an aircraft power plant so as to maintain constant at a value selectable in flight the mach number corresponding to the aircraft's true air speed comprises a power control device such as a fuel regulating valve, two ele- 'ments such as the aneroid capsules 1, 2. respectively responsive to the static pressure P 0  of the ambient atmosphere and the total ram pressure p 1 , a lever 7 to which mutually opposed forces proportional to the pressure p 0 , p 1  are applied, manually controlled means for varying the leverage of these forces about the lever pivot 8, and a connection 9 between the lever and the power control device operable so as to decrease or increase the thrust developed according as the moment applied to the lever by the ram-pressure responsive element exceeds or is less than that applied by the static pressure responsive element. The invention is especially applicable to high speed aircraft propelled by thermopropulsion ducts including "athodyds'' or " ram-jets " and " impulse ducts ". Thus in Fig. 2, the aneroid capsules 1. 2, are situated in chambers 3, 4 fixed to the aircraft and operate through rods 5, 6 on a lever 7 pivoted at 8. One end of the lever is connected through a link 9 to means for adjusting the fuel valve. The preselected value of the pressure ratio may be adjusted by movement of the pivot 8 so as to vary' the ratio of the lever arms x, y. Fig. 3, shows a modification in which the length of the lever arm x is changed by angular adjustment of the capsule 2. The lever 7 is cranked in this case, and the capsules 1, 2 act on opposite sides of one arm, the rods 5, 6 having a common pivot 10, 11. The chamber 4 and its capsule 2 are mounted in a stirrup 13 manually adjustable about a pivot aligned with the pivot 10, 11 in the equilibrium position of the lever by a link 12. To allow for movement of the pivot 10, 11 the chamber 4 is mounted on a bracket 32 pivoted on the stirrups at 33. The link 9 is connected to the fuel valve as before. Increased sensitivity is provided by a spring 15 which assists any movement of the lever 7 away from the equilibrium position. In each modification, the link 9 controls a fuel valve through a fluid-pressure servomotor, Fig. 4 (not shown) (see Group XXIX).
Patent GB-737409-A (GB)
Title: Improvements in or relating to the manufacture of aromatic dicarboxylic acid nitriles
Inventor: HILL ARTHUR
IPC: C07C255/51
Filed: 1952-12-19
Abstract: Dinitriles of aromatic dicarboxylic acids in which the two carboxylic acid groups are not in the ortho or peri positions with respect to one another are manufactured by a process which comprises passing a mixture of ammonia and an alkyl diester of such an acid, wherein the alkyl groups contain up to four carbon atoms, over a solid dehydration catalyst at a temperature between 300 DEG  and 600 DEG C.  Aromatic dicarboxylic acids mentioned are isophthalic and terephthalic acids, diphenyl-3 : 31-dicarboxylic acid, diphenyl-4 : 41-dicarboxylic acid, diphenylmethane - 4 : 41 - dicarboxylic acid, dibenzyl-4 : 41 - dicarboxylic acid and stilbene - 4 : 41-dicarboxylic acid.  Dehydration catalysts mentioned are those which have been found suitable for the conversion of carboxylic acids plus ammonia to their nitriles and include boron phosphate, silica gel and alumina.  In examples isophthalonitrile is obtained by passing diethyl isophthalate down a heated tube containing silica gel through which ammonia gas is passing (1); terephthalonitrile, 3 : 31-dicyanodiphenylmethane and 4 : 41-dicyanodiphenyl are produced similarly by passing through a heated tube containing boron phosphate through which ammonia gas is passing, dimethyl terephthalate, diethyldiphenylmethane 3 : 31 - dicarboxylate and diethyl diphenyl 4 : 41-dicarboxylate respectively.  The product in (3) is recrystallized from ethylene glycol monoethyl ether.  Diethyl diphenylmethane - 3 : 31 - dicarboxylate is prepared by reacting benzoic acid and formalin in the presence of sulphuric acid and boiling the diphenylmethane-3 : 31-dicarboxylic acid produced with ethanol and sulphuric acid.  Specification 413,639 is referred to.
Patent GB-603467-A (GB)
Title: Improvements in heat exchangers
IPC: F28D7/08
Filed: 1945-11-29
Abstract: 603,467. Tubular heat-exchangers. ABBEY, A. (Aktiebolaget Gotaverken). Nov. 29, 1945, No. 32310. [Class 64(iii)] An economiser or like heat-exchanger comprises detachable elements superposed in a flue 2 each element comprising serpentine pipes 3, 4 supported in a frame to form a withdrawable rectangular unit 1 and detachably connected to headers 5, 6 located outside-the walls of the flue. The free ends of the pipes may be carried through the headers and closed by nuts 7 which seal against the walls of the headers and force flanges 8 into sealing contact with the opposite walls. The pipes 3, 4 are connected at their bends by studs 11 resting in cylindrical members 12 to allow expansion. The units may be connected to headers with a sideways displacement so that the units are staggered.
Patent GB-192542-A (GB)
Title: Improvements in or relating to chain stripping devices for sprocket wheels
IPC: F16H7/06
Filed: 1921-12-02
Abstract: 192,542. Lithgoe, J., and Robinson, M. Dec. 2, 1921. Coal-cutting machines. - A device for stripping a chain from a sprocket in a chain - hauled coal-cutting machine, comprises a pair of fingers g set at an angle and mounted on a pivot e, either finger being adapted to be moved into the channel of the sprocket wheel F to detach the chain D therefrom, according to the direction of movement of the sprocket. The fingers are bent downwardly at their ends from the body of the device to provide clearance for the chain. The ends of the fingers are preferably wedge-shaped, so as to be pressed by the chain. into closer engagement with the sprocket.
Patent GB-1007428-A (GB)
Title: Improvements in or relating to winches
Inventor: DOMAGALA JOSEPH EDWARD
IPC: B66D1/26
Filed: 1963-08-16
Abstract: 1,007,428. Winches. LAURENCE-COLEBROOK (CONSTRUCTION EQUIPMENT) CO. Ltd. July 10, 1964 [Aug. 16, 1963], No. 32575/63. Heading B8B. [Also in Division F2] In a winch comprising a pair of drums 11, Fig. 3, each independently driven from one or more hydraulic motors 12 in closed circuits with corresponding hydraulic pumps 16, means is provided to combine the outputs of both of the pumps 16 to drive a single drum. The pumps 16 are of the reversible flow type providing a continuously variable speed and are coupled to pairs of motors 12 via shuttle valves 39, Fig. 4, which divert the flow of the return fluid to filters 41 and check valves 37 or 38 according to the direction of flow for lifting or lowering operations. Valves 28 and 29 actuated by solenoid operated control valve 44 are arranged to combine the flows from the two pumps 16 and cross over the lines 31 for selection of the drum to be driven. An auxiliary pump 19 provides pressure for the control system. Counterbalance valves 23 are arranged in the circuit to permit flow in the direction for lowering under power but preventing flow on overrun. High pressure relief valves 34 operate in conjunction with the check valves 35-38 in either direction of flow.
Patent GB-815838-A (GB)
Title: Improved autoharp
IPC: G10D3/08
Filed: 1956-10-26
Abstract: 815,838. Autoharps; zithers. BIRKETT, T. Sept. 30, 1957 [Oct. 26, 1956], No. 32710/56. Class 88 (2). A grid-like structure, comprising rigid bars.f across the strings band members g lying above and parallel to selected strings, forms rows of apertures exposing different sequences of strings for playing chords by means of a stick or plectrum. The string-covering members g may be solid rods or may consist of cylindrical pieces of hard rubber, plastic, or the like revolvably mounted on metal spindles. The whole structure may be permanently secured to the instrument or may be detachable. Specification 731,629 is referred to.
Patent GB-863247-A (GB)
Title: Strontium titanate preparation
IPC: C04B35/51
Filed: 1959-09-25
Abstract: The transparency of annealed strontium titanate boules is enhanced by heating to 500-1000 DEG C. in a non-reactive atmosphere for example argon, helium, nitrogen or steam, or a vacuum of less than 1 mm. pressure.  The initial boule may be formed by feeding powdered titanate through an oxyhydrogen flame so as to form a boule on a refractory pedestal, as described in Specification 730,665.  The boule is annealed by heating in an oxidising atmosphere at 1000-1700 DEG C., and if desired subjected to a low-temperature oxidising heat treatment at 200 to 600 DEG C., before heating in the non-reactive atmosphere.  The latter treatment may be for 1/2 to 8 hours.
Patent GB-665000-A (GB)
Title: Improvements in canvas panels for artists
IPC: B44D3/18
Filed: 1948-12-17
Abstract: 665,000. Artists' panels. SILVER, S. Dec. 17, 1948, No. 32729/48. Class 11. A canvas panel comprises a sheet of canvas stretched taut over a frame and enveloping its edges, the frame being sufficiently stiff to maintain the sheet in the stretched condition. The frame 10, which may be of plastic or a single bent length of metal wire whose ends are welded together is applied flatwisely against the adhesively coated side of the sheet of canvas 11 and the marginal edges 15 thereof are flapped over the sides of the frame and pressed down against the back of the sheet. Preferably a cover sheet 17 of suitable limp and fairly absorbent paper, e.g. 40 lb stock, is adhesively affixed to the rear side of the panel. The corners of the frame 10 should be as square as possible, and the sides slightly bowed outward to allow for resilient contraction when the canvas is shrunk. Heavy canvas should be skived, i.e. part of the thickness of the marginal lengths shaved off. The corners of the canvas 11 are cut diagonally inwards and so arranged that folds are formed at each corner. When the adhesive, e.g. hot animal glue, is dry the canvas is shrunk by spraying it with hot water in which an additional shrinking agent may be dissolved and allowing it to dry. The canvas is cut so that the warp will run lengthwise of the frame 10 to avoid buckling the longer sides of the frame during the shrinking process. In a modification an intermediate paper sheet 17a is glued adjacent the back face of the canvas.
Patent GB-1169194-A (GB)
Title: Improvements in or relating to Heat Resistant Composite Yarns and Fabric Made Therefrom
Inventor: LONGLEY HAROLD
IPC: D02G3/20
Filed: 1966-07-21
Abstract: 1,169,194. Laminated fabric. BBA GROUP Ltd. 11 July, 1967 [21 July, 1966], No. 32734/66. Heading B5N. A light-weight, heat-resistant fabric is woven from composite yarn and, in order to enhance its flameproof properties, a heat-reflective, flexible layer material e.g. aluminium foil, is bonded to one side thereof by a flexible adhesive based on chloroprene or nitrile rubber or chlorinated natural rubber. The yarn comprises a combination of an asbestos yarn and a " heat resistant fibre component " i.e. a fibre other than asbestos which does not melt and flow as does nylon, glass, polyester or acetate fibre and which is more resistant to degradation by heat than cotton or rayon fibre. The fibre compound may be natural e.g. wool, or synthetic e.g. composed of aromatic polyamide polymer described in Specification 871,581. The asbestos yarn may be twisted and include a reinforcing or core member e.g. a nylon monofilament thread running along the length thereof, and may itself be covered by the fibres formed as a sheath therearound by spinning or wrapping a sliver or roving therearound with opposite twist.
Patent GB-366485-A (GB)
Title: Improvements in vacuum electric tube devices and circuits employing same
IPC: H04B1/16
Filed: 1930-10-31
Abstract: 366,485. Valve circuits. ROBINSON, E. Y., Garvary, Dryden Road, Bush Hill Park, Enfield, Middlesex, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Oct. 31, 1930, No. 32852. [Classes 39 (i) and 40 (v).] A wireless receiving circuit comprises an indirectly heated diode valve, the anode or cathode of which is in direct connection with the control electrode of an amplifying valve, and also connected to a resistance the signals to be detected be in g applied to the other diode electrode and the other end of the resistance. In the modification shown in Fig. 3, the cathode 13 of the diode 1 is connected to the grid 5 of triode 2 and to a resistance 7 shunted by a H.F. byepass condenser 8. The signals from circuit 6 are applied to the anode 4 of the diode 1 and the other end of resistance 7. Grid biasing potential is obtained from. the anode circuit resistance 10. To prevent hum from the heater reaching the cathode of diode 1, a shield 12 may be interposed between them. In another embodiment, Fig. 4, the anode 4 of diode 1 is connected to the grid 5 of diode 2 in which case the grid biasing resistance 10 is unnecessary. A coil 14 in the triode plate circuit may react into the diode input circuit and a low-pass filter 15, 16 may be introduced between the diode plate 4 and triode grid 5 to limit the amount of H.F. energy reaching the triode. Reaction may be controlled by making the elements of this filter variable. The preferred valve constructions comprise a diode and triode in a single envelope. In one arrangement the short branch of a U-shaped filament 30, Fig. 5, heats the diode cathode 33, the other branches heating parallel-connected cathodes 31 surrounded by grids 34 and a single anode 35, the anode 36 of the diode being in metallic connection with and supported by the grid supports of the triode. In another arrangement, Fig. 6, a V-shaped filament heats a cathode 40 and its tip a cathode 45 for the diode, the anode 50 of which is of wire gauze supported on wires 51 welded to the triode grid supports 48. The triode anode 41 is made short so that it cannot collect electrons emitted by cathode 45 or a shield may be interposed between them. Specifications 228,647, [Class 40 (v), Wireless signalling &c.], and 278,787, [Class 39 (i), Electric lamps, Arc &c.], are referred to.
Patent GB-487751-A (GB)
Title: Improvements in or relating to copying paper
IPC: B41M5/10
Filed: 1937-11-29
Abstract: 487,751. Carbon paper; photo - mechanical printing-surfaces. SOKAL, S. (Kalle & Co., Akt.-Ges.) Nov. 29, 1937, No. 32973. [Class 100 (iv)] [Also in Group XX] Carbon paper is prepared with a coating of the usual composition on one side, and on the other side is covered with a lighter-coloured composition containing a substance which will absorb chemically active light, particularly ultra-violet light, so that a copy in reverse is obtained on an original sheet which will facilitate the production of a duplicate by a photographic copying - process. Chrysoidine, 3-methyl-4-amino-2<1>-methyl-azobenzene, the umbelliferone carboxylic acid salt of sodium, the sodium salt of 4.4<1>-di-(p-dimethylaminobenzoylamino)-diphenyl-2-2<1>-disulphonic acid, 4-dimethylamino-benzophenone, naphthostyril, acridone, or m-tolyl 1À2-pseudo-azimido-5- naphthol may be used as the light-absorbing substance, with stearine and tallow, paraffin, wax, ceresin, or similar substances as binders.
Patent GB-510350-A (GB)
Title: Improvements in or relating to the catalytic production of hydrocarbons
IPC: C08G61/04
Filed: 1937-11-29
Abstract: 510,350. Catalytic apparatus and processes. METALLGES. AKT.-GES. Nov. 29, 1937, No. 32986. Convention date, July 17. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 31, 1938.]. [Class 1 (i)] [Also in Group IV] Hydrocarbons consisting mainly of solid paraffins are obtained by synthesis from carbon monoxide and hydrogen in a contact furnace having cooling elements narrowly spaced apart, under a pressure of from 2 to 50 atmospheres, maintaining a contact period of more than one minute, and withdrawing the paraffins formed during the synthesis so that the paraffin in and on the catalyst is maintained below 100 per cent., preferably below 30 per cent., of the weight of the catalyst. The paraffin may be removed continuously or intermittently by solvents, which may be constituted by the reaction products condensing in the upper part of the apparatus when the gas is led through from below upwards. Alternatively porous rods or tubes may be provided to lead away the paraffins, or the apparatus may be periodically steamed out or subiected to a vacuum. Specification 464,308 is referred to.
Patent GB-629851-A (GB)
Title: Improvements in or relating to detachable ladder stays or extensions
IPC: E06C7/48
Filed: 1947-12-15
Abstract: 629,851. Ladder brackets. FILLERY, W. Dec. 15, 1947, No. 32993. [Class 20(ii)]. A detachable extension for a ladder comprises a rail C adapted to engage a wall &c. connected by divergent members B<SP>1 </SP>to parallel members A<SP>1</SP> having horizontal cross-ties, and carrying hooks A<SP>4</SP> engaging over the rungs.
Patent GB-195701-A (GB)
Title: Universal centre finder
IPC: B23B49/04
Filed: 1922-01-14
Abstract: 195,701. Mee, W. E. Jan. 14, 1922. Tools for setting out work.-A tool for finding the centres of bored work, cylinders, or holes comprises a plate a provided with three eccentrically arranged arcuate slots c, a three-armed member I on which the plate is rotatably mounted at its centre, and three plungers e radially slidable in the arms and connected to the slots in the plate whereby, when the latter is rotated, they may be extended or withdrawn. The necessary centre mark b is provided on a stud b' fixed to the member I. The plungers e are connected to the plate a by screws d passing through curved washers f in the slots C and through grooves U in the member 1. Springs r within the member I tend to force the plungers e outwardly, the latter however being frictionally retained in a retracted position until the plate a is rotated slightly. Legs m for engaging the periphery of the bore are secured by nuts l engaging the split tapered screw-threaded ends of the plungers, a pin wrench being used to tighten the nuts. Sets of legs corresponding to different ranges of diameter are provided, gauge lines and the corresponding diameters being marked thereon to facilitate their adjustment. For use with small bores rods n, Fig. 3, carrying the jaws o are slidably mounted in brackets t fixed to the backs of the plungers e, the rods being guided by projections o<1> engaging grooves in the member I and by keys Q in the brackets, screws k securing the rods in position. Gauge lines similar to those on the legs m are also marked on the rods n and, in addition, holes are formed to receive the ends of the screws k at positions corresponding to the adjustment. One of the legs m and one rod n is graduated so that it may be protruded further than the others to throw the registered point b out of centre by a dependent amount. Studs h are provided for rotating the plate a.
Patent GB-710639-A (GB)
Title: Transmission for an electric hair clipper
Inventor: WAHL LEO JACOB
IPC: B26B19/06
Filed: 1952-12-31
Abstract: 710,639. Hair clippers. WAHL CLIPPER CORPORATION. Dec. 31, 1952, No. 33060/52. Class 131 A power transmitting linkage, connecting an armature to a movable cutter blade in a vibrator type electric hair clipper, comprises a flexible, tensioned leaf spring mechanically secured to the armature and extending towards the cutter blade and a finger of resilient plastic material connected at its ends to the spring and to the cutter blade. As shown, one end of an L- shaped leaf spring 22 is riveted to the armature 15 by the rivets which hold the laminations of the armature together and the other end has bonding apertures 23 which help to secure a nylon finger 25 moulded on to the spring. The free end 26 of the finger is inclined at 45 degrees to the axis of the spring and has bevelled corners 30 interfitting with a central recess 28 in the movable blade 18.