baber/WOPTO huggingface dataset:
Patent GB-222124-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J19/34
Filed: 1924-09-16
Abstract: 222,124. British Thomson-Houston Co., Ltd., (Assignees of Nolte, H. J.). Sept. 18, 1923, [Convention date]. Vacuum tubes.-A support for a grid consists of a metal strip 29 bent in the form of a ring and provided with stampedout parts 30, which project outwards or inwards from the ring and secure supporting arms 20. One of the arms holds together the ends 32 of the strip. The ring is mounted on slotted supports 26, the sides' of which are pressed into openings 31 in the ring. Grid wires may be wound around the arms 20, in opposite directions and interwoven. Specification 190,184 is referred to. The Specification, as open to inspection under Sect. 91 (3) (a) comprises a similar support for electrodes other than grids. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1345024-A (GB)
Title: Dual channel amplifiers
IPC: H03F3/68
Filed: 1971-04-19
Abstract: 1345024 Dual channel transistor amplifiers HONEYWELL INFORMATION SYSTEMS Inc 19 April 1971 [29 April 1970] 21987/71 Heading H3T In a switchable dual channel amplifier comprising two parallel transistor amplifying networks 2, 17, 28 and 3, 21, 34 each having different transfer characteristics, each network is associated with a respective electronic controlled switch 37, 38 which is enabled by a control signal applied to a control electrode of the controlled switch 37 or 38 so as to selectively apply biasing potentials to at least one semiconductor device in the amplifier network to enable the selected network to transmit to the output terminal 73 signals applied to the input terminal 72. The amplifier may be used for reading from a read head (54, Fig. 2, not shown) and a manually or logically operated switch on the tape control unit selects channel A by applying ground to pin 40. This turns on transistor 37 and forward biases semi-conductor diode 2 so that an input signal at 72 is amplified by transistors 17, 28 and an output signal is passed by conductive diode 35 to the intermediate output 73. The pin 42 is not grounded so transistor 38 is biased off as is transistor 34 and diode 3 is reverse biased to render channel B inoperative. The gain of each channel may be varied or preset for optimum response at a given frequency by variable resistors 30, 32. The operating point of the amplifier is stabilized by comparing the potential developed across resistor 55 with that developed across Zener diode 7 by means of transistor 6 which is connected so as to maintain the current through resistor 55 constant . Condenser 56 filters out the signal across resistor 55 and prevents the circuit from going into oscillation. If a magnetic tape is to be read which has recorded information recorded in a mode or code which is more suitably amplified by channel B then by setting the manual switch so that pin 42 is grounded channel B is operative and channel A is inoperative. The values of the resistors and capacitors in channel B are chosen to give optimum gain and frequency filtering for this type of mode or code. The amplifier may be used for reading information in a computer system where the information is recorded on magnetic tape in the return to zero, non-return to zero or phase coding methods. The tape may be driven by a pair of pneumatic drive capstans (51, 52).
Patent GB-978864-A (GB)
Title: Production of unsaturated esters
Inventor: WHITBY FRANCIS JOHN
IPC: C07C67/08
Filed: 1962-06-07
Abstract: Unsaturated esters are prepared by reacting an unsaturated dicarboxylic acid or anhydride thereof with an alcohol in the presence of an acidic cation-exchange resin catalyst.  The acid contains a pair of carbon atoms carrying carboxyl groups linked by a double bond i.e. maleic or fumaric acids or anhydrides and substitution derivatives thereof.  Substituent groups may be unsubstituted or substituted alkyl, cycloalkyl or acyl groups and acids mentioned in addition to maleic and fumaric are citraconic, mesaconic, 2-chlorethylfumaric, cyclohexylmaleic, benzylmaleic and aconitic acids.  Alcohols may be mono- or poly- and primary and secondary are preferred and many examples are given.  The cation-exchange resin may be a sulphonated phenol-formaldehyde, a zeolite type, or a sulphonated polystyrene and contains acidic ionizing groups such as phenolic hydroxyl, sulphonic acid, methylene sulphonic or carboxyl groups.  Examples describe the preparation of di-n-butyl and diethyl fumarates, and di-n-butyl maleate using sulphonated cross-linked polystyrene resin as catalyst.
Patent GB-710342-A (GB)
Title: Improvements in or relating to the treatment of crude petroleum
IPC: C10G49/00
Filed: 1950-09-07
Abstract: Crude petroleum is desulphurized by contacting it in admixture with hydrogen with a catalyst consisting of the oxides of cobalt and molybdenum deposited on or incorporated with a support, at a temperature of 750-850 DEG F. and a pressure of 500-1,500lb./sq. in., separating hydrogen and hydrogen sulphide from the treated crude and recycling the hydrogen to the reaction zone.  The catalyst may be in the form of cobalt molybdate and be supported on alumina.
Patent GB-511896-A (GB)
Title: Improvements in or relating to a foldable photographic camera
IPC: G03B17/04
Filed: 1938-07-25
Abstract: 511,896. Photographic cameras. KODAK, Ltd. July 25, 1938, No. 22110. Convention date, July 24, 1937. [Class 98 (i)] In order that a folding camera, having a front cover the bottom of which is disposed in a lower plane than that of the bottom wall of the camera body when the camera is open, may be supported on a plane surface, a support carried by the body is connected with the cover so as to be automatically extended and withdrawn on open ing and closing the camera. As shown, the support comprises a rod 4, sliding in an aperture 5, in the camera body 1, and having a slot 7, engaging one end 8 of a pivoted lever 9, the other end of which is pressed by a spring 14 against a cam 17 on the cover 2. On closing the camera the rod is withdrawn under the action of the spring. In a modification the end 16 of the lever may engage a cam slot fixed to the cover, 2, the spring 14 being omitted. In a further modification the lever 9 and rod 4 are integral.
Patent GB-206913-A (GB)
Title: An improved reserved seat indicator
IPC: A47C1/13
Filed: 1922-08-15
Abstract: 206,913. Rushton, W. Aug. 15, 1922. Seat " engaged " indicators.-An " engaged " indicator for theatre seats comprises a holder b, bearing information and retained at a suitable dietance from the seat back by pieces c. A slide a bearing the number of the seat is mounted slidably on the holder band is locked in its extreme positions by a stud e on a spring d. Specifications 180,893 and 189,159 are referred to.
Patent GB-603432-A (GB)
Title: Improvements in and relating to cinematographic light projectors
IPC: G03B21/20
Filed: 1944-11-10
Abstract: 603,432. Projection lamps. DEWAR, M. M., and VALLIS, L. C. Nov. 10, 1944. No. 22203. [Classes 75(ii) and 75(iv)] [Also in Group XX] The optical system of a light projector is mounted on an optical bench and is angularly adjustable about two mutually perpendicular axes, each perpendicular to the optic axis of the system, by a unitary device mountedon the bench but spaced from both said perpendicular axes. Fig. 1 shows the main ellipsoidal mirror 27 enclosed in a frame 22 secured by bars 24, 25 to a frame 23 containing forward annular spherical mirrors 31, 32 with centres at the near focus of the ellipsoidal mirror. The frame 22 is pivoted at 33 in a stirrup 20 mounted on a vertical pivot 19 on a saddle 18 carried on parallel rods 10. The frame 23 is supported on a pin 44 engaging a slot therein and capable of vertical and transverse movements. As shown in Fig. 3 the pin 44 is mounted in a position offset from the pivot hole 38 in a member 37, rotation of which about its pivot 39 on the saddle 40 provides the transverse movement. Vertical movement is produced by the knob 43 on spindle 42 screw-threaded into a passage 35 containing balls 45 on which the pin 44 rests. The carriages 13, 14 for the carbon holders 15, 16 are also mounted on the rods 10 and are coupled for simultaneous movement by a link 17.
Patent GB-142015-A (GB)
Title: Improvements in painters' lamps
IPC: B44D3/16
Filed: 1919-09-10
Abstract: 142,015. Thomas, B. M. Sept. 10, 1919. Wick burners; flame protectors.-A painter's lamp consisting of a wick burner b<1> and an oil reservoir b surrounded by a curved funnel c is fitted with an india-rubber ball pump a for blowing up the flame. A metal tube a<1> secured in an air opening c<1> in the funnel carries the ball pump which is arranged either inside or adjacent to the handle so as to be operable by the hand holding the handle. The funnel is formed with additional air inlets c<11>.
Patent GB-421994-A (GB)
Title: Improvements in and relating to grate bars for the furnaces of boilers and the like
IPC: F23H13/00
Filed: 1933-08-10
Abstract: 421,994. Furnace grates. BENTLEY, W., Prospect Mills, Wibsey, Bradford. Aug. 10, 1933, No. 22340. [Class 51 (i)] In a furnace grate built up of transverse firebars having apertures in their fuel-supporting surfaces, interchangeable grids C, Fig. 5, and solid blanks C', Fig. 6, are used as filling pieces for these apertures in order that the distribution of air to the fuel bed may be varied. The bars consist of side members A connected by vertical partitions A<1> to form pockets, the upper portions of which are chamfered, as shown, to receive the undercut edges C<4> of the grids C and blanks C<1>. The latter have downwardly extending ribs C<6> which prevent warping and enable pressure to be applied from below to effect removal of the filling pieces. The grate is applicable particularly to furnaces fitted with mechanical stokers, in which case blanks C<1> are used at the sides of the grate and grids C in the centre portion. Specifications 259,049 and 308,897, [both in Class 51 (i)], are referred to.
Patent GB-841895-A (GB)
Title: Improvements in or relating to air flow-control devices
IPC: F16K1/04
Filed: 1957-07-15
Abstract: 841,895. Silencing gaseous currents. BEECH & CO. Ltd., A. S., and WHITEHOUSE, T. H. Oct. 15, 1958 [July 15, 1957], No. 22412/57. Class 7(2). [Also in Group XXIX] A combined flow-control device and silencer for a pneumatic circuit comprises a valve member 15 having a frusto-conical head 16 screwthreadedly adjustable with respect to a complementary conical seating 14 on rotation of a body 22 secured to the valve member and housing a silencer consisting of a coil 26 of fine gauze metal sheeting through which air passes to the atmosphere.
Patent GB-1508421-A (GB)
Title: Shooting games
IPC: A63F9/02
Filed: 1975-04-24
Abstract: 1508421 Cannon and ships game SEVEN TOWNS Ltd 24 April 1975 [20 May 1974] 22432/74 Heading A6H  A game comprises a contoured board, 10 toy ships, 10 model flags and 2 toy cannons. Each cannon is angularly adjustable. A ball (33) is ejected by a spring when a trigger lever (37) is pushed forwardly. The board comprises halves which can nest together for storage.
Patent GB-225831-A (GB)
Abstract: 225,831. Duten, M. Dec. 4, 1923, [Convention date]. Timing.-Automatic advance in accordance with increasing engine speed is obtained by the centrifugal action of blocks 5, 6, slots 12, 13 in which are engaged by pins 10, 11 on a plate 8 driven by the engine shaft 7. The blocks 5, 6 slide in guides 3, 4 secured in the cover of the casing 1, this cover being fixed to the magneto shaft. The plate 8 also carries a central pin 9 which passes between the blocks 5, 6 and rotates within a central opening in the casing cover. Springs 16, 17 may be provided to effect the return of the blocks on decrease of speed, but this readjustment may be effected by the rotation of the driving-shaft. As shown, the blocks are set for counter-clockwise rotation; by inverting them so that the slots slant in the opposite direction the appropriate adjustment is obtained for clockwise rotation of the shafts.
Patent GB-1501175-A (GB)
Title: Accessory drive unit more particularly for aircraft
IPC: F02C7/32
Filed: 1975-05-23
Abstract: 1501175 Compressed air systems; gas turbine plant KLOCKNER-HUMBOLDT-DEUTZ AG 23 May 1975 [7 June 1974] 22587/75 Headings F1G and F1N The casing of a mechanical power transmission unit 1 having output drive-shafts for coupling thereto of aircraft accessories (e.g. a generator 2 and a hydraulic pump 3) is pressurized by air. The unit 1 is driven by a turbine 6 or a further turbine (not shown) coupled to a shaft 5. Air leaking from the gas turbine 6 is supplied to the casing together with the air delivered by a compressor 8 driven by the unit 1. At a predetermined pressure a constant pressure valve 10 opens to allow the air in the casing to flow through a centrifugal oil separator 9 to an antechamber 11. Some of this air escapes to atmosphere through an open two-way valve 13, the rest being returned to the casing by the compressor 8. Stopping of the turbine 6 causes the two-way valve 13 to close, whereafter atmospheric air is drawn by the compressor 8 into the antechamber 11 through a non-return valve 12 until the constant pressure valve 10 opens to cause an increase in pressure in the antechamber 11. Should the turbine 6 be re-started, the valve 13 is arranged to open only when the speed of the compressor 8 has reached a predetermined valve. A safety valve 15 limits the maximum pressure in the casing.
Patent GB-1343201-A (GB)
Title: Lever-type two-stroke internal combustion engine
IPC: F02B75/24
Filed: 1971-04-19
Abstract: 1343201 Charging two-stroke engines; driving gear for piston pumps E C WENZEL 19 April 1971 [3 March 1970] 22921/71 Heading F1B An I. C. engine comprises power and air charging cylinders 10a, 10b, 10c, Fig. 7 having pistons driving a crank-shaft 22 through a lever system consisting of the piston rods 10e, 10g, 10i inter-connected at their outer ends 28, the air charging piston rods 10i also being operatively connected intermediate their ends to the crankshaft so as to function as second order levers. Eight cylinders are arranged in a common plane as coaxial pairs with a corresponding air charging cylinder to each pair. Air or mixture is drawn into the air charging cylinder 16c, Fig. 12 through non-return valve 48 and supplied to two power cylinders 10a, 12b of other pairs through a non- return valve 50 and conduits 66a, 66b. Air or mixture enters the cylinders through inlet ports 40 and exhaust gas leaves via exhaust ports 42. Mixture is ignited by a spark plug 66 or fuel is injected by an injector 68 when the engine is operated as a diesel engine. The engine may be water cooled.
Patent GB-904948-A (GB)
Title: Improved hose fittings
IPC: F16L33/01
Filed: 1961-06-26
Abstract: 904,948. Hose fittings. DUFFIELD, F. R. June 26, 1961 [Feb. 3, 1961], No. 23028/61. Class 99(1). A lip seal type of hose fitting comprises a sleeve 10 having a screw-threaded portion 12 engageable on an externally screw-threaded portion 14 of a nipple 15 or other connecting member, the bore of the sleeve tapering away from the portion 12 and the nipple having a bore part tapering from the threaded end thereof to a counterbore 22 defining a shoulder 24 between the bore of the nipple and the counterbore, an insert 20 for insertion into the bore of the hose and having a radial end face for engagement with the shoulder, a supporting member 28 having a bore and front and rear conical surfaces 30, 31 for insertion between the braid 29 and inner layer 23 of the hose to grip the braid between the tapering bore of the sleeve and the cone 30 and the layer 23 between the bore of the member 28 and the insert, the conical surfaces of the cone 31 and the tapering bore of the nipple 15, as the screw threaded portions 12, 14 engage co-operating to urge the member 28 between the braid and layer 23. As shown, the member 28 is formed with a groove 32 so as to permit deformation of the cone 31 radially inwardly and the insert has a hose gripping surface 25 and an end flange 21 for abutment with the shoulder 24; a sealing member may be located between the flange and shoulder.
Patent GB-614825-A (GB)
Title: Stopper remover
IPC: B67B7/44
Filed: 1946-08-02
Abstract: 614,825. Wrenches. HARTLEY, V., and WALLIS, W. H. Aug. 2, 1946, No. 23043. [Class 61 (iii)] [Also in Group XVII] A screw-stopper remover comprises a closed frame A with an elongated taper opening B serrated along one edge D to grip the stopper head and an offset bridge strip G fixed over the opening to prevent it slipping down over the bottle neck. One end of the frame has a smaller opening L with a projection M on one edge for removing crown stoppers and the other end has a projecting blade N for lifting lever lids. Reference has been directed by the Comptroller to Specification 621,578.
Patent GB-1598780-A (GB)
Title: Dicyclopentadiene derivatives
Inventor: EMMONS WILLIAM D
IPC: C08F20/28
Filed: 1978-05-26
Abstract: The invention is concerned with novel unsaturated compounds having extremely low volatility having a single monoethylenically unsaturated group of the formula H2C = C < whereby they are capable of polymerization to produce linear homopolymers and copolymers with copolymerizable monomers containing such a group, and having autoxidizable characteristics by virtue of a different type of unsaturated group. These new compounds are useful for the production of polymers, alone or in admixture with other polymers or monomers to modify the characteristics of the components of the mixture. They are useful in coating or impregnating compositions and/or in the molding, casting, or otherwise forming of shaped articles.
Patent GB-1084870-A (GB)
Title: Improvements in or relating to carpet sweepers
Inventor: SUNDERLAND BRIAN
IPC: A47L11/33
Filed: 1965-05-31
Abstract: 1,084,870. Carpet sweepers. QUALCAST (FLEETWAY) Ltd. Aug. 30, 1966 [May 31, 1965; Sept. 3, 1965; Nov. 18, 1965], Nos. 23104/65, 37780/65 and 49086/65. Heading A4F. In a carpet sweeper. comprising an inverted box-like casing 10 (Fig. 3, not shown) within which are mounted a rotary brush 23 and two pairs of floor contacting wheels 27 supported on axle rods 28 on opposite sides of the brush, the ends of the axle rods 28 and the brush 23 are supported at each side of the casing 10 by spaced bushings 17, 18 which are either integral with, or as shown, inserted through apertures in the casing wall from the outside. The bushings 17, 18 may be formed integrally with a. single mounting plate 16 provided with cam surfaces 26 for controlling the rocking movement of a handle bail 24. Each pair of wheels 27 is urged downwardly by a wire spring 34 lowered to engage within a notch on the underside of the bushing 17. Two dustpans 32 are retained in their operative position by tension springs 37. In a modified construction the dust pans may be tilted to empty them by depressing a button 50 (Fig.. 13,. not. shown) on a bar (49) having downturned ends (48) engaging webs (47) on blocks (46) secured to the dustpans (32).
Patent GB-598738-A (GB)
Title: New device for water heating
IPC: F24H1/18
Filed: 1945-09-07
Abstract: 598,738. Heating water. SOUTH METROPOLITAN GAS CO., and CHANDLER, D. Sept. 7, 1945, No. 23127. [Class 64 (i)] An auxiliary heater for a domestic water tank a comprises a heat transfer plate b secured to the tank and heated by a gas burner d, and two sets of fins c, c' or the like extending one set inwardly and the other outwardly relatively to the plate a, the outer set of fins c being enclosed within a casing f. The casing has a lining g of heat insulating material. The fins c extending into the water are surrounded by a casing with an upwardly extending pipe to enable a small quantity of water to be drawn off quickly before all the water in the tank is heated.
Patent GB-311999-A (GB)
Title: Improvements in or relating to metallic stuffing-box packing for piston rods or the like
IPC: F16J15/28
Filed: 1928-08-11
Abstract: 311,999. Hauber, F. Aug. 11, 1928. Packing, metallic. - One or more split or segmental rings 1 are pressed inwards by two or more outer split, rings 4, 5, the joints of which are arranged at approximately 180‹ to one another.. Relative rotation is prevented by a pin in the ring 1 engaging the slot of the ring 4 and a pin in the ring 4 engaging the slot of the ring 5. The packings are fitted fluid-tight in casing-rings 10.
Patent GB-442734-A (GB)
Title: Brake controlling device
IPC: B60T15/38
Filed: 1934-08-13
Abstract: 442,734. Fluid-pressure brakes. COMPAGNIE INTERNATIONALE DES FREINS AUTOMATIQUES, 70, Rue Louvrex, LiÚge, Belgium. Aug. 13, 1934, No. 23357. Convention date, Aug. 26, 1933. [Class 103 (i)] The application of a fluid-pressure brake in two stages is brought about by resisting the movement of the brake piston by means of liquid pressure, the brake applying compressed air always being supplied at maximum pressure. For the first stage liquid in chamber 6 behind the brake piston 2 has a free passage through a conduit 8 to a chamber 9 under atmospheric pressure. When the brake operating pressure in front of the piston 2 produced by compressed air from reservoir 4 under control of a valve 5 has attained a certain value, a piston 16 is raised to close a valve 15 in conduit 8 and in the second or pressure producing stage the liquid forces its way past a spring valve 10. When the brake is released liquid returns through a valve 12. Movement of valve 5 to emergency position closes an electrical circuit for a solenoid-operated valve 13 which is opened to connect the chamber 6 directly to the chamber 9 and allow free application of the brake. In a modification, the valve 10 is opened by a solenoid in emergency and the valve 13 is dispensed with. In a further modification, the liquid acts on a further piston in place of the brake piston, connected to the brake transmission.
Patent GB-822822-A (GB)
Title: Improvements in and relating to wrapping or packaging machines
Inventor: HORGAN GEORGE DANIEL
IPC: B65B19/24
Filed: 1956-07-30
Abstract: 822,822. Packaging machines. INDUSTRIAL MACHINERY CO. Ltd. July 1, 1957 [July 30, 1956], No. 23421/56. Class 94(1). A machine of the kind comprising hollow mandrels about which wrappers are folded to form packets, articles being inserted into the mandrels and ejected with the packets, has a series of linked mandrels moving intermittently in a rectilinear path past packet forming, article delivering, and packet and article ejecting means. The mandrels 1 are carried on an endless chain 2 past means, not shown, for folding inner and outer wrappers, about them and closing one end of the wrappers. The wrappers are clamped to the mandrels and folded to U-form about them by plates 20 and 18 respectively mounted on a member 16 sliding on each mandrel support 6 and operated by stationary cam means 22, 23 adjacent the track supporting the chain 2. A foil may be first clamped about the mandrel as described and then folded to tubular form and one end closed by known means and an outer wrapper may be similarly applied. Charges of cigarettes are presented to the mandrels by a wheel 29 carrying pockets 30. Each pocket comprises L-shaped members 34, 35 and after it has received a batch of cigarettes from a shoot 32, a cam and lever assembly 39-43, 47 carries the members 34, 35 to more relative to one another to compress the cigarettes during movement of the pocket towards the mandrels. At the charging position, compression is released slightly and a pusher 48 forces the batch into a mandrel. An injector 52 next forces each batch and surrounding packet from the mandrel onto a platform 50 on a delivery wheel 49. Members 54 form end tucks, and a folder 55 folds down the top closure flap during motion towards a stacking shoot 57. Adjacent the shoot, the platform 50 takes up a horizontal position and a pusher 58 delivers the packet to the shoot, part 59 of which folds down the final closure flap 56. The packet forming and closing means may be as described in Specifications 328,310 [Class 98(i)], 550,042, 550,065, 550,066.