baber/WOPTO huggingface dataset:
Patent GB-817193-A (GB)
Title: Improvements relating to cabinets for storing plans, drawings and the like
Inventor: EATWELL HENRY THOMAS
IPC: A47B88/00
Filed: 1957-01-21
Abstract: 817,193. Drawers; drawer pulls. HARVEY & CO. (LONDON) Ltd, G. A. Jan. 21, 1958 [Jan. 21, 1957], No 2116/57; Class 52(1) In a cabinet for storing drawings or other sheets flat, each drawer 1 has a front panel 13 inclined rearwardly from its lower to its upper edge, the said lower edge being held in spaced relationship with a front wall element 15 by means of a drawer pull member 16 extending all along the front of the drawer. The side walls 11 of the drawer tray 10 have roller carrying arms 11<SP>1</SP>. A cover plate 24 prevents the rear edges of the drawings from curling and a hinged flap 22 prevents the front edges from curling and may serve as a temporary marker when a drawing is removed.
Patent GB-1028701-A (GB)
Title: Improvements in gas convector fires and the like
Inventor: GRIEG DAVID
IPC: F24C3/12
Filed: 1962-01-22
Abstract: 1,028,701. Air heating stoves. UNITED GAS INDUSTRIES Ltd. Feb. 14, 1963 [Jan. 22, 1962], No. 2299/62. Headings F4S and F4W. A gas convector fire includes a heat exchanger 10 which is disposed substantially or wholly behind a combustion chamber and in which heat from exhaust gases leaving the combustion chamber 4 is transferred to air flowing upwardly through the fire for discharge into a room. The outer casing 1 of the fire is strengthened by frame members 2 which carry adjustable legs 3. The combustion chamber has a rear plate 6 disposed behind four block radiants 5 which are provided with reflectors 34, 35 and a guard 36. Each block radiant is heated by a burner head 25 with three jets 26. The gas is supplied through pipe 27, governor 28 and pipe 29 to a central cock 30 by which the gas can be turnedoff, or supplied to the two middle burner heads, or supplied to all four burner heads. Exhaust gases from the combustion chamber 4 are deflected by plate 7 through four circular openings 9 into the heat-exchanger 10 which comprises two shallow pan elements 11 and 12, communicating at their lower ends through four openings 15. The majority of the exhaust gases follow a U-shaped path through the heatexchanger before passing through outlet 17 to a flue. Two small priming passages 24 connecting the pan elements 11 and 12 provide a short cut between inlet 9 and outlet 17 so that exhaust gas spillage into the room is reduced when outlet 17 is cold. The heat exchanger divides the space between the plate 6 and the casing 1 into three passages 20, 21, 22 respectively in front of, between and to the rear of the elements 11 and 12, and guide plates 18 and 19 extend these passages to the upper forward end of casing 1. Air passing upwardly through the fire is heated to varying degrees in each one of these passages, and is discharged into the room. The lower forward end of the fire is provided with an artificial fuel panel 39 illuminated by a bulb 41 and given a flicker effect by a fan 43.
Patent GB-1388062-A (GB)
Title: Snap-action switches
IPC: H01H13/30
Filed: 1972-01-18
Abstract: 1388062 Sets BURGESS MICRO SWITCH CO Ltd 4 Dec 1972 [18 Jan 1972] 2397/72 Heading H4J [Also in Division H1] In a snap-action Switch the actuator 30, Fig.  1, engages a spring 20 hear a point at which it is connected to a pivot link 16 at its end opposite that at which it is connected to the pivoted contact 12 whereby both the spring 20 and link 16 are displaced to minimize the restoring force of the system. The link 16, Fig. 2, is "U" shaped  to provide a single spring attachment point 22 and a pair of pivot arms 18 between which the  spring 20 extends. The contact arm 12 has a pair of contact points 38 movable between a pair of fixed contacts 40, 42. In an embodiment applied to a telephone handset cradle, two separate switches (only one shown) are operated from a pair of projections 34 on a single arm 30 having an operating button  28. The projections 34 may be of different lengths whereby one switch snaps over before  the other.
Patent GB-958801-A (GB)
Title: Improvements in or relating to leak valves
Inventor: BILLETT ERIC ARTHUR
IPC: H01J49/04
Filed: 1961-01-20
Abstract: 958,801. Valves. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 11, 1962 [Jan. 20, 1961], No. 2486/61. Heading F2V. A leak valve comprises a base-plate 1, a tube 3 for flow of gas, the tube having a thin-walled portion 4 of fine bore supported by the plate, and a thrust member 5 mounted from the plate for controlled compression of the thin-walled portion within the elastic limit of the tube to vary the cross-sectional area of the bore. The tube 3 may be of nickel having a portion 4 of 0.1 inch outside diameter with a wall thickness of one to two thousandths of an inch, the flow rate being variable between zero and 0.01 uL/sec. with a pressure drop of 50 mm. of mercury. Axial adjustment of the member 5 is obtained by a screw-threaded connection to a worm drive 13, 18. The valve may be used to regulate the admission of gaseous samples to a mass spectrometer ion source.
Patent GB-1533633-A (GB)
Title: Master link assembly for crawler tractor track assembly
IPC: B62D55/205
Filed: 1976-01-22
Abstract: 1533633 Endless tracks FIAT-ALLIS CONSTRUCTION MACHINERY Inc 22 Jan 1976 [23 Jan 1975] 2494/76 Heading B7H A master link assembly for an endless track includes spaced master links 40, 42 each of which comprises two overlapping half-links 52, 54 which are held in alignment by a pin 46 inserted into holes 60 and are secured in side by side relation by bolts or capscrews 80, 85 extending into the half-links through holes 70 in a track shoe 44. The bolts or capscrews 80 have portions 82 which engage in grooves 62 in the pin 46 to secure the pin against axial displacement.
Patent GB-489648-A (GB)
Title: Improvements in or relating to aeronautical propellers
IPC: B64C11/04
Filed: 1937-01-28
Abstract: 489,648. Screw propellers. UNITED AIRCRAFT CORPORATION. Jan. 28, 1937, No. 2525. Convention date, Jan. 28, 1936. [Class 114] Blades of aeronautical screw propellers are mounted on spiders having elongated arms adapted to yield within limits in all directions. Upon the propeller shaft 10 is mounted the boss 14 that carries a number of arms 22, the boss being secured in position on feathers 16 and by conical end pieces 18, 20. From this boss 14 project arms 22 which are graded in size radially so as to yield under normal stresses within permissible limits. Upon these arms 22 are mounted blades 24 the hollow portion 30 of which is provided with bearing sleeves 114, 118 and also with adjustable balance weights 32. On the lower end there are sleeves 56 which are adapted to contact at their bases with yieldable plates 78. The blades are secured in position by divided sleeves 34 which are flanged so as to provide seatings for the thrust races 48, the other race 50 being carried by a flanged extension 28 of the root. The two parts 36, 38 of the divided sleeve 34 are held by bolts 40 and the member 38 is provided with an opening through which may be passed an arm 104 carrying counterweights. Between the base of each root and the boss 14 is provided a two-part rubber cushion and this is formed with projections adapted to seat in corresponding recesses 74, 76 in the boss. The front of the boss carries a hydraulic piston and cylinder by which pitch changes are positively effected.
Patent GB-564514-A (GB)
Title: A process for the regeneration of synthetic rubber-like materials, and the utilisation of the regenerated material so obtained
IPC: C08J11/10
Filed: 1943-02-16
Abstract: Vulcanized synthetic rubber, such as butadiene polymers alone or together with styrene or acrylonitrile, is reclaimed by comminuting, e.g. to fine crumb by grinding rollers of 5 to 1 friction ratio, mechanically working between rollers, e.g. of friction ratio 1.75 to 1 at a temperature below 60 DEG  C. until the particles cohere to form a sheet which is thereupon worked between rollers at a temperature between 60 and 120 DEG  C., e.g. with a friction ratio 1.2 to 1.  A softener, e.g. up to 10 per cent of pine oil, pine tar or coumarone resin may be incorporated before, during, or after mechanical working.  The product may be used for re-treading tyres.
Patent GB-785745-A (GB)
Title: Blasting initiator
IPC: F42B3/103
Filed: 1956-01-26
Abstract: 785,745. Electric blasting fuzes. DU PONT DE NEMOURS & CO. E. I. Jan. 26, 1956 [March 15, 1955], No. 2552/56. Class 9(1) A ventless electric blasting detonator having a metal shell 1 enclosing a detonating charge 2 and a priming charge 3 comprises an ignition assembly in which the bridge wire 10 is embedded in a composition 7 housed in a non-metallic capsule 8 whose base is thinner than its sides. The bared leg-wires have a beaded portion 15 which engages a transverse groove 14 in the closure plug, the plug being formed in two halves placed round the wires and held in the shell by crimping. A metal ferrule 13 holds the halves of the plug together before insertion in the shell. A delay element comprising a tube 4 of lead or synthetic plastic filled with a charge 5 such as a barium oxide/ selenium mixture or a boron/ red lead mixture may be incorporated in the detonator, the element being prevented from moving against the capsule by a crimp 6 in the shell. The charge 2 may be tetryl, cyclonite, or pentaerythritol tetranitrate and charge 3 may be lead azide or mixtures of lead azide and a bis-basic salt of lead nitrate with a nitrophenol. The composition 7 may be a smokeless powder/potassium chlorate/dibasic lead salt of nitrophenol mixture or a boron/red lead mixture and the capsule may be of nylon or moulded polyethylene. The capsule 9 insulates the leg wires against stray electrostatic charges, while the groove 14 provides a path for any arc caused by the application of excessive current. Specification 636,792 is referred to.
Patent GB-364871-A (GB)
Title: Improvements in bedstead jointing devices
IPC: F16B12/60
Filed: 1931-01-27
Abstract: 364,871. Bedstead joints. MUNRO, J. A., 493, Elizabeth Street, Melbourne, Victoria, Australia. Jan. 27, 1931, No. 2597. [Class 52 (ii).] A bedstead joint comprises a link 6 slidably provided on the side rail 1 and having a hooked end adapted to engage a pin 4 on the end post 2, said link being slidably retractable to a protected position during the handling or transport of the parts of the bedstead. A spring 14 may be provided to engage notches 17, 18 and thus hold the link in extended or retracted position.
Patent GB-853617-A (GB)
Title: Improved safety device for apparatus immersed in a tank
IPC: H01F27/40
Filed: 1957-01-25
Abstract: 853,617. Fluid actuation of switches. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Jan. 25, 1957 [Jan. 25, 1956], No. 2772/57. Class 38 (5). A tank partially filled with liquid for cooling apparatus immersed therein is combined with a safety device having means responsive to a fall in liquid level in the tank below a predetermined point to operate an alarm and/or protective control for the apparatus, and means responsive to an increase in pressure of the gas above the liquid to operate the alarm and/or protective control and/or release of the excess gas pressure. The apparatus in the tank may be a transformer or the electronic tube described in Specification 706,209. As shown, the safety device comprises a float 1 fixed to a tube 7 which is open at its lower end to the liquid in the tank 3 and which opens at its upper end into a vessel 4. The lid 5 of the vessel 4 is connected by a rod 19 to a mercury switch 18. The tube 7 is vertically slidable within the boss 12 of a valve 8 which rests on a seat 9. If the liquid level falls, the corresponding downward movement of the float causes actuation of the switch 18 via the tube 7 and the rod 19. If the liquid level rises, the liquid passes up through a clearance space 11 between the tube 7 and the valve 8 and through a bore 9<SP>1</SP> in the valve to an outlet 25. An increase in pressure of the gas above the liquid forces liquid up the tube 7 into the vessel 4 until the weight of liquid in the vessel overcomes the buoyancy of the float and the rod 19 pulls the switch 19 down to actuate it. A large increase in gas pressure causes the valve 8 to lift from its seat 9 and vent some of the gas through the aperture 15.
Patent GB-933143-A (GB)
Title: Improvements in or relating to air suspension systems for vehicles
Inventor: ELLIS ALBERT EDWARD
IPC: B60G21/073
Filed: 1960-01-26
Abstract: 933,143. Pneumatic springs; road vehicle suspensions. CLAYTON DEWANDRE CO. Ltd. Jan. 16, 1961 [Jan. 26, 1960], No. 2821/60. Classes 108(2) and 108(3). An air suspension systemcontrolled by levelling valves 4 has surge tanks 8 each associated with an air spring 2 and is characterized by the provision of means 20 responsive to the relative movement between the chassis and axle operable to actuate a valve 13 to cut off communication between a spring and its associated surge tank when such relative movement exceeds a predetermined amount. In the preferred embodiment each bellows type spring 2 and associated surge tank 8 (Fig. 3) communicates through a passage 10 and part 12 which is closed by valve 13 when air is admitted to chamber 16 through inlet 17 moving diaphragm 16 and the valve 13 against the bias of spring 19. The operating means for the valves 13 comprises a housing 20 (Fig. 2) with a pressure outlet 33 connected to the inlets 17 of the surge tanks by conduits 18 an exhaust outlet 33, an axially adjustable sleeve 23 with a pressure fluid inlet 24 at one end normally closed by spring loaded valve 26 and a spool valve 27. The spool valve 27 is moved in response to suspension movements by the cam surfaces 21a on lever 21 which is pivoted to housing 20 and connected to the axle. When the lever deflection exceeds a predetermined amount the end of the spool contacts valve 26 closing drilling 28 and opening valve 26 to allow air from inlet 24 to pass through the right-hand port 30 and annular groove 31 to outlet 33 and pipes 18 to operate the surge tank valves 13. When the deflection is reduced again the spool is urged back closing valve 26 and opening drilling 28 to allow the air to return through outlet 33 and the ports 30 and annular grooves 31 and exhaust through outlet 32, thus allowing valve 13 to open again. In a development the surge tanks are divided into two or more compartments with a corresponding number of valves operable to vary the surge tank volume progressively.
Patent GB-177147-A (GB)
Title: Improvements in apparatus for controlling the firing of guns on board warships
IPC: F41G5/16
Filed: 1922-01-31
Abstract: 177,147. Schneider et Cie. March 14, 1921, [Convention date]. Methods of sighting; ordnance, discharging by means external to breech mechanism.-The" corrector " for anti-aircraft guns described in Specification 176,763 is adapted for guns on board ship by mounting it on a support stabilized by a gyroscope, the traverse correction for inclination of trunnion axis being applied by apparatus as described in Specification 177,146, and the gun or guns being provided with electric contacts for firing semi-automatically at the corrected angle of elevation in rhythm with a circuit closer forming part of the " corrector." Fig. 1 shows the corrector 5 trainably mounted on the casing 1 of a gyroscope which is suspended on cardan axes 2, 3 from a fork 4 and counterbalanced by a weighted ring 6. Spirit levels 8, 9 enable the precession of the gyroscope to be corrected by hand pressure on the knob 10. The gyroscope may be adapted to give the automatic correction for inclined trunnion axis as set forth in Specification 177,146. Fig. 3 shows an arrangement of electric contacts 33, 34 for firing the gun at the angle of elevation transmitted from the " corrector " through a Wheatstone bridge device comprising resistance. 17, 18 and a voltmeter 22. The switch arm 21 of the resistance 18 at the gun is maintained vertical by a gyroscope and the resistance 18 is carried by a disc 24 which is rotated by hand crank 28 to produce zero reading on the voltmeter. The movements of the disc are communicated through linkage 35, 36, 37, 38 to the contact 34 and the gunner operates a hand crank 32 to elevate the gun about trunnions 29 to keep the contact 33 in the vicinity of the contact 34. The contacts 33, 34 are pressed together to energize the firing magnet 41 when a lamp 40 indicates that a clockwork-driven contact 39 forming part of the corrector is in circuit closing position. The Specification as open to inspection under Sect. 91 (3) (a) also describes with reference to Fig. 5 (Cancelled) firing contacts 65, 67 on the gun which are provided with a device for automatically maintaining the " advance " in ignition proportional to the maximum angle of roll. One contact 67 is maintained vertical by a gyroscope and the other 65 is moved when the ship rolls by a fixed member 66 which displaces the linkage 57, 58, 59, 60, the member 57 being geared to the contact 65. A pawl 51 acts on a ratchetwheel 50 carrying the contact 65 to retain it in the advanced position until firing has taken place, the pawl-carrying arm 68 engaging the member 66 to release the pawl and allow the contact 65 to be returned against a stop 56 by a spring 55. This subject-matter does not appear in the Specification as accepted.
Patent GB-739368-A (GB)
Title: Coaxial electric transmission line spacing assembly
IPC: H01B11/18
Filed: 1954-02-01
Abstract: 739,368. Cables. BONDON, L. A. Feb. 1, 1954, No. 2901/54. Class 36. In a coaxial transmission line comprising hollow inner and outer conductors 11, 10 separated by radially disposed spacers, each spacing assembly comprises a short cylindrical conducting member 12 having its outer surface in engagement with the inner surface of the inner conductor 11 and having an external circumferential channel 13 intermediate its ends, and radially disposed spacers 14 maintained perpendicular to the longitudinal axis of the member 12 and which extend through the wall of the inner conductor so that their inner ends project into the channel 13 and their outer ends engage the inner surface of the outer conductor 10, the depth of the channel 13 being such that the characteristic impedance of the line at an insulating assembly is equalized with the characteristic impedance of the line in the intervening air-spaced portions. The member 12, which is preferably of the same material as the inner conductor 11 may be formed with a wide circumferential channel 18 intermediate its ends, in the base of which channel 13 is formed. The spacers 14, which are preferably of polytetrafluoroethylene, may be cylindrical, having concave inner ends which fit the bottom of channel 13, wedge-shaped outer ends which are in intimate contact with the inner surface of the outer conductor, and an axial bore 25. An insulating pin 16 passing through member 12 has each of its projecting ends extending into the bore of one of the spacers 14 to maintain the latter in position. The member 12 may have circumferential recesses 21 filled with soft silver solder 22, so that after positioning the member 12 within the conductor 11 it may be soldered in place. The assemblies are longitudinally spaced at any desired interval and disposed on the inner conductor with any desired angular relationship between the spacers 14 of adjacent assemblies (90 degrees in the illustrated embodiment).
Patent GB-305050-A (GB)
Title: Improvements in turbines
IPC: F01D5/14
Filed: 1928-07-26
Abstract: 305,050. Lyrsholm, A. J. R. Oct. 29, 1927. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 29, 1929]. Divided on 280,889. Drawings to Specification. Blades.-Relates to turbines with two or more blade rings having a variable number of revolutions and adapted particularly for hydraulic gearing, and consists in arranging that in reaction turbines the projection of the outlet velocity on the peripheral velocity is at a maximum number of revolutions less than or equal to the peripheral velocity, and in impulse turbines less than or equal to half of the peripheral velocity. The blades have rounded inlet edges. The Specification as open to inspection under Sect. 91 (3) .(a) comprises also a description of the application to hydraulic gearing as in Specification 280,889, [Class 69 (ii), Hydraulic presses &c.]. This subject-matter does not appear in the Specification as accepted.
Patent GB-1137855-A (GB)
Title: Hydraulic servo apparatus
IPC: F15B9/09
Filed: 1966-01-21
Abstract: 1,137,855. Fluid-pressure servomotor systems. JOHNSON SERVICE CO. Jan.21, 1966 [Jan.25, 1965J, No.2939/66. Heading G3P. A spring-loaded piston 13 controlling a load 3, e.g. a valve or damper, is responsive to pressure variations in a chamber 5 of a control valve 4, the chamber being supplied by a pump 1 via a restriction 10 and being connected via restrictor tube 21 to the chamber above the piston. The pressure in the chamber is varied by means of a leak-valve 7 co-operating with a leak-port 6, the leak-valve being adjustably mounted on the free end of a lever 23 hinged at 28. The armature 31 of an electromagnet 8 is fixed to lever 23 intermediate the hinge and the leak-valve. The electromagnet comprises a U-shaped core 29 having a winding 30 encircling one leg thereof. A balance weight 32 is attached to lever 23. As shown, the load is connected to a controller 9 connected in series with the electromagnet so that if the load varies from its set point the controller varies the energization of the electromagnet to cause repositioning of the load. The magnetic torque line 38 Fig. 3 has a smaller slope than the hydraulic torque line 39 and intersects the latter at the set point 37, such an arrangement causing the leak-valve to return to the set point if it is disturbed by vibrations on the line. If the restrictor 21 were not present to delay the response of the piston 13, the latter would respond to undesired movement of the leakvalve away from the leak-port, and would cause flow into chamber 5 and out of the leak-port, thereby causing the hydraulic torque line to follow path 40 and prevent the return of the leakvalve to the set point. The tube 21 may be replaced by an orifice.
Patent GB-214361-A (GB)
Title: A rubber composition or dressing for fabrics and other materials
IPC: D06M15/693
Filed: 1923-02-01
Abstract: 214,361. Lawes, W. W. Feb. 1, 1923. Paints.-A paint comprises rubber which is boiled in linseed oil until dissolved, together with terebine (liquid drier) and a pigment such as burnt sienna, Oxford ochre, or vegetable, black. The pigment may be previously ground up with more linseed oil in the proportions of 25 per cent of dry pigment and 75 per cent of linseed oil.
Patent GB-1323281-A (GB)
Title: Cycloalkylphenylcarbamates a process for their preparation and their use as insecticides acaricides and fungicides
IPC: A01N47/24
Filed: 1972-01-21
Abstract: 1323281 N - Sulphenylated cycloalkylphenylcarbamates BAYER AG 21 Jan 1972 [23 Jan 1971 10 Feb 1971] 3062/72 Heading C2C N-Sulphenylated cycloalkylphenylcarbamates of the general formula in which m is 1, 2 or 3, n is 0, 1 or 2, R is cycloalkyl with 5 to 7 ring carbon atoms (possibly substituted with 1 or 2 alkyl groups), the radicals R being identical or different when m is 2 or 3, R<SP>1</SP> is alkyl with 1 to 3 carbon atoms, alkoxy with 1 to 3 carbon atoms, halogen or nitro, the radicals R<SP>1</SP> being identical or different when n is 2, and X is fluorine, chlorine or bromine, the X's being selected independently of one another are prepared by reacting a N- sulphenylated N-methylcarbamic acid fluoride of the general formula with a cycloalkyl phenol of the general formula Many examples are given. The compounds have insecticidal, acaricidal and fungicidal properties.