baber/WOPTO huggingface dataset:
Patent GB-857623-A (GB)
Title: Improvements in or relating to hydraulic drum brakes
IPC: F16D65/22
Filed: 1958-10-08
Abstract: 857,623. Hydraulic brakes. FRANCAISE DU FERODO S.A. Oct. 8, 1958 [Oct. 8, 1957], No. 32178/58. Class 103 (1). An hydraulically-operated shoe-drum brake of the kind which, as shown in Figs. 1a, and 1b, comprises a double feed, applied at chambers 13 and 14 respectively, but may have only a single-feed, with shoes which are subjected to a resilient restoring force in the position of rest and are adapted to bear frictionally against a rotary drum, when they are subjected to expansion is characterized in that the shoes co-operate with two coaxial movable pistons 21 and 23, which have positive abutment with respect to each other and resilient abutment means in relation to a fixed disc 10. These meanly define a minimum separation and a position of rest of the pistons and shoes, whereby in co-operation with at least one of the said pistons, there is ensured a certain appreciable reserve of oil. The resilient abutment means comprises on the one hand a sliding collar 30, which is adapted to abut against the cylinder, and against a piston, and, on the other hand, a prestressed spring 31 bearing at its opposite end against the piston 23.
Patent GB-756375-A (GB)
Title: Improvements in or relating to pressure relief valves for fuel tanks
IPC: F16K17/08
Filed: 1953-11-20
Abstract: 756,375. Fluid-actuated valves. FLIGHT REFUELLING, Ltd., and MACGREGOR, P. S. Sept. 20, 1954 [Nov. 20, 1953], No. 32272/53. Class 135. A resiliently-loaded pressure relief valve for an aircraft fuel tank in which fuel is stored at a pressure above atmospheric is installed at a position in the tank capable of withstanding stresses greater than those of the tank as a whole and includes a pressure-responsive member normally subjected on one face to tank pressure and on its other face to atmospheric pressure. During refuelling the other face of the member is subjected to tank pressure to balance the member, thus decreasing the effective loading urging the valve towards closure. The valve comprises a closure member 12, Fig. 2, housed in a body 10 connected below the valve member to a tank discharge pipe and urged towards closure by springs 26 acting through pivoted-levers 23 engaging a sleeve 19 secured to both the valve spindle 13 and a diaphragm 28 (or piston) subjected on its lower face at all times to tank pressure. A pilot valve 42, Fig. 1, housed in a casing 38 mounted on the body 10 is connected by a duct 46 to the space above the diaphragm which is normally vented to atmosphere through the duct 46 and a duct 49 so that tank pressure acting on the underside of the diaphragm assists the springs in holding the valve closed. During refuelling, tank filling pressure acts on a plunger 56 to urge the pilot valve 42 upwardly against its spring 55 to connect the space above the diaphragm to tank pressure, both sides of the diaphragm are then subjected to the same pressure and only the springs act to hold the valve closed so that during refuelling the valve will open at a lower pressure and the tank as a whole be protected against damage. Specification 676,131 is referred to in the Provisional Specification.
Patent GB-393194-A (GB)
Title: Improvements in gas or air extractors for buildings, vehicles and other structures
IPC: F23L17/02
Filed: 1932-11-16
Abstract: 393,194. Ventilators. MUIRHEAD, J. and MUIRHEAD, D. P., (trading as MUIRHEAD & SONS, J.), 1276, Maryhill Road, Glasgow. Nov. 16, 1932, No. 32369. Addition to 305,958, [Class 137, Ventilation], and 377,919.- [Classes 25 and 137.] In modified forms of the extractor ventilator described in the parent Specifications, drainage openings 19 protected by lips or flanges 6a are provided in the bottom of the outer air spaces or channels 20 and the top of the inverted U-shaped cowl 11 is formed with a movable or sliding section to enable access to be had to the interior of the cowl. The sliding section is provided with a handle 25. The extractor is also shown as applied to the coping of a cavity wall which forms an uptake flue.
Patent GB-762732-A (GB)
Title: Swivel post lock assembly
Inventor: LEAR EARL BEAN
IPC: E21B15/04
Filed: 1954-11-09
Abstract: 762,732. Hinges &c. CHICAGO PNEUMATIC TOOL CO. Nov. 9,1954, No. 32385/54. Class 65 (2). [Also in Group XXIII] A swivel post assembly for mining machinery comprises a stationary swivel post member 57, a member 54 rotatably supported on the post, angularly-spaced pawl elements 73 supported by the post for radial movement relative to the rotatable member, a cone member 69 adapted normally to urge the pawl elements outwardly to lock the rotatable member, and fluid pressure operated means adapted to release the cone member from the pawl elements to free the rotatable member for rotation. To the upper end of the post, which is hollow, is secured by welds 62 a member 63 formed with a cylindrical recess 64 and also with radial openings for accommodating the pawls 73. The outer surfaces of the latter are serrated to engage similar serrations formed on the inner surface of a sleeve 77 secured by welds 78 to the rotatable member, to which is pivoted at 60 a drill-carrying arm 33. The inner surfaces of the pawls are inclined at an angle of 7¢ degrees Œ ¢ degree to the axis of the post, and are formed with serrations having an included angle of 90 degrees. Similar serrations are formed on the outer surface of the cone 69, the latter being slidable on the hollow shank 66 of a hollow piston 65 disposed in the cylinder 64. The cone is urged downwardly by a spring 82, and the piston is normally held at the bottom of the cylinder by a spring 99. Shank 66 is connected by a pipe 89 to a valve 88 which, in the position shown, vents the cylinder to the atmosphere through a port 94. When the rotatable element 95 of the valve is moved through an angle of 90 degrees, by the handle 98, in the direction of the arrow, compressed air is admitted to the cylinder, whereby the piston rises, and thus moves the cone out of engagement with the pawls. The piston may be retained in the raised position by the engagement of a pin (not shown) with any one of a series of radial holes 106 provided in the shank 66.
Patent GB-240896-A (GB)
Title: Improvements in governors for turbines and other prime movers
IPC: F01D17/06
Filed: 1924-07-14
Abstract: 240,896. Benn, H. H. July 14, 1924. Clutches, friction; controlling reversing-gearing.-A governor comprises two clutches B, C which engage, one at a speed above and one at a speed below the normal to actuate a valve spindle in opposite directions, the clutch B engaging when the centrifugal action of the weight m overcomes the action of the spring n, and the clutch c engaging when the action of the spring l overcomes the centrifugal action of the weight k. The drum E carries the driving plates of both clutches and the pivoted weights k, m, the driven plates being connected to a gear wheel f directly engaging the valve spindle and to a gear wheel g engaging the spindle through an idlewheel.
Patent GB-1125307-A (GB)
Title: Panoramic projection devices
IPC: G03B21/20
Filed: 1966-07-19
Abstract: 1,125,307. Panoramic projection and copying device. VOLPI A.G. July 19, 1966 [Nov.30, 1965] No.32461/66. Headings G2A and G2J. In a panoramic projection device comprizing lamphouse 1, transparency 2, objective 4, panoramic lens 5 and a cylindrical or spherical screen 8, double frusto-conical light-absorbing masks 13, 14 are provided to prevent backreflections reducing the projected image contrast. Screen 8 may be semi-transparent or reflecting for external or internal viewing, and may be replaced by photo-sensitive material for copying purposes.
Patent GB-675602-A (GB)
Title: Improvements relating to the construction of stators for dynamo electric machines
Inventor: HALLETT LOUIS BERTRAM HENRY
IPC: H02K5/128
Filed: 1949-12-19
Abstract: 675,602. Stators for dynamo - electric machines. CHANCE BROS., Ltd. Oct. 10, 1950 [Dec. 19, 1949], No. 32462/49. Class 35. The stator of a dynamo-electric machine is formed by assembling the stack b between endshields a and securing them by filling the intermediate portion with sprayed metal k. The stator bore has a tubular lining e which is sealed in the end shields by sealing rings f, i held in position by threaded bushes g, j respectively.
Patent GB-259801-A (GB)
Title: Improvements in reversal and control of regenerative furnaces
IPC: F23L15/02
Filed: 1925-12-23
Abstract: 259,801. White, A. E., (Morgan Construction Co.). Dec. 23, 1925. Regenerators; valves, reversing. - Furnaces having a pair of regenerator passages at each end are provided with reversible blowing devices associated with each passage and adapted to be rendered operative or inoperative, and a source of producer gas adapted to be connected to one of the passages when the blowing device of this passage is inoperative. Fuel other than producer gas, such as oil or pulverized coal, may be used, all four blowing devices being then operative. Each air regenerator passage 2, 2<1> has a horizontal ground level port 29 communicating directly with a blowing casing 15 connected by a conduit 13 with an open-ended duct 14. The gas regenerator passages 3, 3' have ports 30. 30<1> disposed between ports 31, 32 and 31<1>, 32<1> respectively. The ports 31, 31<1> lead to a producer gas conduit 34 while the ports 32, 32<1> lead by ducts 35, 35<1> to blowers 15 connected with other open-ended ducts 14. Pivoted gravity-closing covers 37, 37<1> are arranged over the ports 31, 31<1> and adapted to be operated by movable hoods 38, 38<1>, Fig. 1. As shown for use with producer gas the hood 38<1> connects the ports 31', 30<1>, the cover 37<1> being open, so that producer gas is supplied to the passage 3<1>. Air is drawn in by the right-hand blower to the passage 2' and the two left-hand blowers draw out the waste gases through the passages 2, 3, the hood 38 being in position for connecting the ports 30, 32, the port 31 being closed by its cover 37 and the blower associated with the duct 35<1> being stopped. On reversal the hoods 38, 38<1> are both shifted to the right, connecting the ports 30<1>, 32' and 30, 31, closing the port 31<1> and opening the port 31, white the end blowers are reversed, the blower for the duct 35<1> started in the direction for exhausting waste gases and the blower for the duct 35 stopped. The vertical ducts 14 are lined with refractory material and filled with checker-work to protect the fans from sudden temperature changes when reversal takes place. When using oil or other fuel that is not passed through regenerator passages The hoods 38, 38<1> always connect the ports 31, 32 and 30<1>, 32', the covers 37, 37<1> being both closed. The two right-hand blowers and the two left-hand blowers are then operated and reversed together to supply air and exhaust waste gases, in conjunction with right- and left-hand burners. To cool the furnace all the blowers are operated in the exhaust direction.
Patent GB-434102-A (GB)
Title: Improvements in or relating to synchronous driving means
IPC: H04N5/04
Filed: 1933-11-22
Abstract: 434,102. Synchronous movements. FERNSEH AKT. - GES., Goerzallee, Zehlendorf, Berlin. Nov. 22, 1933, No. 32653. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 23, 1934]. [Class 40 (iii)] The frequency or damping of the hunting oscillations of a synchronous motor for television is increased by making the damping factor and restoring torque large. Formulae are given for calculating these quantities. Specification 366,598 is referred to.
Patent GB-1177215-A (GB)
Title: Improvements in or relating to Oil Burner Fuel Systems
Inventor: MYATT WILLIAM GORDON
IPC: F23D11/28
Filed: 1966-07-21
Abstract: 1,177,215. Valves. BROCKHOUSE HEATER CO. Ltd. 10 Oct., 1967 [21 July, 1966], No. 32712/66. Heading F2V. [Also in Division F4] A fuel supply system for an oil burner includes a shut-off valve 16 which has a longitudinally slotted plunger 22 urged to a closed position, in which a valve member 23 engages a seating 25, by a spring 24, the valve being opened by a solenoid 31 having a core 33 so that oil can flow from an inlet 40 to the nozzle via a passage 58. The system also includes a pressure-regulating valve 20 which comprises a cylinder 65 having an inlet 66 and an outlet 67, a piston 68 slidable within the cylinder and carrying a valve member in the form of a ball 69 in a cage assembly 70, and a cam 76 engaging the head 75 of a quill 72 which is slidable in the end wall 73 of the cylinder 65 and is urged by a spring 74 between the head 75 and wall 73, the piston 68 having a central passage 77 to receive a reduced portion 78 of the quill and the ball 69 being capable of closing passage 77. To increase pressure in line 19 the quill is moved to the left in Fig. 1 and fluid pressure acts on the ball to close passage 77 so that the piston 68 is moved against a spring 71 until the part 78 engages the ball and opens the passage.
Patent GB-437149-A (GB)
Title: Improvements in and relating to change-speed gears for motor vehicles
IPC: F16H61/02
Filed: 1934-11-14
Abstract: 437,149. Variable-speed gearing. HNIZDO, F., 6, Dolni Blanickß, and OBERMAJER, V., 36, MalostranskÚ nßm, both in Prague. Nov. 14, 1934, No. 32766. Convention date, Nov. 15, 1933. [Class 80 (ii)] Stepwise constant-mesh variable gearing having a countershaft 19, 24 for each reduced speed, is controlled jointly by a centrifugal governor 17 on the driving shaft 16, and by a torque responsive coupling 22 on the driven shaft 23, both of which serve to stress a spring 32, which only takes effect on the shiftermember 40 when the main clutch-pedal 34 is depressed. The control-collars 17a, 22a are rigidly connected by a rod 26, carrying stops 28, 29, which allow the rod to move only one step relatively to a surrounding sleeve 27, rigid with the shifter-member 40, thereby compressing the spring 32. The shiftermember is normally locked by engagement of stops 12 with an extension 34c of the clutchpedal 34, depression of which latter frees the stops 12 and simultaneously engages the extension 34c with stops 8 on the rod 26, whereby the latter is held fixed whilst the shifter-member 40 moves one step only. The three dog-clutches 18, 20, 25 of the threespeed gear are all connected together and to the shifter member 40, the teeth 20a of the clutch 20, passing completely over their complementary teeth 20b when the dogclutch 25 engages.
Patent GB-796635-A (GB)
Title: Improvements in or relating to gas filters
IPC: B01D47/02
Filed: 1955-11-16
Abstract: 796,635. Air cleaners. COOPER'S MECHANICAL JOINTS, Ltd., STREETE, C. M., and FLOYD, F. Oct. 11, 1956 [Nov. 16, 1955], No. 32842/55. Class 8(2). In a gas filter of the oil-bath type having a downwardly directed central dirt-laden gas inlet tube 9 surrounded by one or more filter beds 6, 7 held between the tube 9 and a tube 4 spaced from the surrounding container 1, the tube 4 has a skirt 10 terminating short of the container base and serving to divide the oil bath into inner and outer coaxial portions resulting in the gas stream contacting the central portion but not the outer portion of the oil bath. A perforated conical baffle 13 deflects the gas through the filter beds 6, 7 of knitted wire mesh and cleaned gas is deflected by an arcuate baffle 26 into an outlet duct 18. The outer portion of the oil bath is connected by apertures 25 in the tube 4 with the filter space.
Patent GB-173403-A (GB)
Title: Improvements relating to reciprocating ram pumps
IPC: F04F7/02
Filed: 1920-11-23
Abstract: 173,403. Morgan, F. J. Nov. 23, 1920. Lever-actuated pumps; tappet-actuated pumps; stroke, varying.-The plunger 13 of a pump is packed by fluid in a chamber 10 associated with the outer end of the plunger, the pressure in the chamber being maintained substantially equal to the pressure in the pump barrel throughout the stroke, as by a diaphragm 11 reciprocated in synchronism with the plunger. The chamber 10 is connected to the suction pipe of the pump by a pipe 16 and non-return valve 20. The plunger and diaphragm may be actuated by a tappet 31 engaging an extension 14 of the plunger connected to the diaphragm, and the strokes of the plunger and diaphragm may be varied by means of a sliding wedge between the tappet and the extension 14. The tappet 31 may be actuated by an eccentric or cam and rocking lever 34, and the stroke may be adjusted by means of an adjustable connection between the eccentric-rod and lever.
Patent GB-779652-A (GB)
Title: An improved centrifugal device for treatment of solid, liquid or gaseous substances
IPC: B01F11/02
Filed: 1953-11-27
Abstract: <PICT:0779652/III/1> <PICT:0779652/III/2> In mixing, grinding, emulsifying or dispersing apparatus comprising a stator 8 and a rotor 7 between the co-operating surfaces of which the material to be treated flows from the axis towards the periphery, the surfaces have a first area where annular series of grooves 10, 12 face one another and a second area where annular series of groovs 101, 121 face one another, each of the areas being followed by areas where the surfaces form gaps 9, 91.  As shown in Fig. 4 the gap 9 leads into an annular chamber 14, but in a modification the gap 9 leads directly to the second area.  Additional material to be treated may be supplied through a duct 15.  In Fig. 2 the grooves are not shown but lie in the position indicated by the reference 16.  The rotor is driven by a coupling 4 and a motor 2.  The material is supplied to a hopper 5 and is finally discharged by a pipe 6.  In modifications the apparatus has a vertical axis, the drive being direct or by means of belts.
Patent GB-604858-A (GB)
Title: Froth flotation method
IPC: B03D1/16
Filed: 1945-12-06
Abstract: 604,858. Froth flotation. DEHN, S. G. (Mining Process & Patent Co.). Dec. 6, 1945, No. 33042. [Class 82(ii)] In a method of froth flotation there is delivered to a zone of centrifugal action pulp together with an aerating gas at a pressure greater than atmospheric but less than the hydrostatic pressure at the zone of centrifugal influence. As shown pulp is fed into a space 45 of cell C from which it flows through a pipe 53 to an impellor 38. Air under a pressure greater than atmospheric but less than the hydrostatic pressure of the pulp at the impellor is admitted to a pipe 52 surrounding .the impellor drive shaft 39, mixed with the pulp and entrained therein in small bubbles by the action of the impellor. A valve 61, or an arched casting, Fig. 1 (not shown) is fitted in the feed chamber of each cell to prevent escape of gas through the pulp feed. A double seal 70 prevents escape of gas along the shaft. Two or more cells may be operated in series.
Patent GB-748881-A (GB)
Title: Improvements in or relating to the production of solid non-ionic surface active agents
IPC: F16K3/02
Filed: 1952-12-31
Abstract: Liquid non-ionic surface-active agents having the general formula R-S-(CH2CH2O)n-CH2CH2OH wherein R represents a straight chain alkyl group containing, preferably, 5 to 30 carbon atoms and n is an integer in the range of 5 to 50 are converted into a solid form by mixing the liquid agent with an excess by weight of solid urea in the presence of a reaction diluent and a reaction activator, maintaining the mixture until urea adduct formation has taken place and separating the solid product of urea and surface-active agent.  The urea employed may contain biuret.  The term "reaction diluent" denotes a liquid hydrocarbon which does not form urea adducts or a mixture of liquid hydrocarbons containing only a small proportion of hydrocarbon which forms urea adducts at the reaction temperature, the diluent being a non-solvent for urea and the liquid surface-active agents; examples are n-and iso-pentanes, n- and iso-hexanes, cyclopentane, cyclohexane and 40-150 DEG  C. petroleum ether fractions.  The term "reaction activator" denotes a compound having a solvent action on urea, e.g. water, a C1-3 alcohol, glycerol and ketones such as acetone and methyl ethyl ketone.  The general conditions of the process are those given in the parent Specification.  Preferably, the surface-active feed stock is pretreated as described in Specifications 748,879 and 748,880 and the adduct formation carried out as described in Specifications 748,877 and 748,878. In an example n-dodecyl mercaptan is reacted with ethylene oxide at 180 DEG  C. in the presence of caustic soda until 6-8 mols. of oxide have been absorbed; the product is acidified with glacial acetic acid and added with some methanol to iso-pentane, solid urea is stirred into the mixture and the resulting solid product is filtered off yielding a free-flowing powder.  According to the Provisional Specification, liquid or low melting solid non-ionic surface-active agents, comprising a compound having the general formula R-S-(CH2CH2O)n-CH2CH2OH or R-CO-O-(CH2CH2O)n-CH2CH2OH wherein R is a straight chain alkyl group and n is an integer are reacted with urea whereby solid surfaceactive agents are formed.
Patent GB-954251-A (GB)
Title: Process for separating mixtures of substances
IPC: C01G35/00
Filed: 1961-09-15
Abstract: <PICT:0954251/C1/1> The separation of mixtures of zirconium and hafnium or niobium and tantalum is effected by feeding the mixture directly into one or both phases in a liquid-liquid partitioning system, both phases of which contain thiocyanic acid. As shown in the Figure, the solid mixture is fed from container D via worm screw C into vessel 8 where it is stirred with stirrer E into the two immiscible liquids which flow in counter-current from the feeds at opposite ends of the apparatus A and B.  Each vessel consists of a mixing and separating portion.  Reference is made to separating zirconium/hafnium tetrachloride or oxychlorides by means of a water/thiocyanic acid methyl isobutyl ketone, two phase system, and also to separating niobium/tantalum pentachlorides by means of a water/thiocyanic acid/cyclohexanone system.  Comparative Examples 2 and 3 describe solutions of the mixtures being added to the partitioning system, e.g. zirconium/hafnium tetrachlorides in aqueous thiocyanic acid and zirconium/hafnium oxychlorides in water.  Example (4) describes a zirconium/hafnium thiocyanate solution being formed by charging a cation exchanger with an oxychloride solution of the metals and then eluting with ammonium thiocyanate, the solution thus formed then being added as before to the partitioning system.
Patent GB-366920-A (GB)
Title: Improvements in or relating to thermionic amplifying devices
IPC: H04B3/10
Filed: 1930-11-06
Abstract: 366,920. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. and TERRY, V. J., Columbia House, Aldwych, London. Nov. 6, 1930, No. 33370. [Class 40 (v).] Automatic gain control is provided by arranging the input to an amplifier as an unbalanced bridge and utilizing a control current to vary the balance by increasing and decreasing the impedances in two of the arms. Fig. 1 shows a multi-channel carrier telegraph receiver in which the input contains resistances 3, 4, which may be a carbon filament and a metal filament lamps respectively, the heating of the lamps is determined by a control current through the circuit 10. A neon discharge tube 15 coupled to the output acts as a safety device if high transients are produced or if either resistance fails. Alternatively a grid-leak condenser combination in the amplifier or a current limiter may be used. The resistances 3, 4 may be arranged in the form of a Wheatstone bridge as shown in Fig. 4 with the input applied to one diagonal and the output taken from the other diagonal. Alternatively three winding transformers may be used in the input as shown in Fig. 3 and the resistances 3, 4 may be either directly heated by rectified and smoothed current or indirectly heated by unrectified current. The control current may be derived from the signal or a separate pilot current may be sent and may operate a relay in the circuit of a local source of heating current. Since transmission variation is not equal at all frequencies impedances variable with frequency may be used in series or in parallel with the resistances 3, 4 to provide compensation.