baber/WOPTO huggingface dataset:
Patent GB-400434-A (GB)
Title: Improvements in or relating to rock-drills
IPC: B25D9/20
Filed: 1932-11-24
Abstract: 400,434. Percussive rock-drills. COCK, B., Woodbine, Camborne, and HOL. MAN BROS., Ltd., Camborne, Cornwall. Nov. 24,1932, No. 33305. [Class 122 (ii).] The distributing-valve is made in two similar, tubular parts each provided with a neck 30 meeting in a line 29. Each half has flanges 31, 32 providing actuating and locking areas respectively. The valve-chest ends are closed by plugs 37, 38 secured by a bolt 39. The ports and passages are straight and do not cross. The valve-throwing ports 20, 21 are put into communication with the separate exhaust ports 22, 23 by the movement of the heads 31. Main cylinder ports 25, 26 are put into communication with the inlet passage 28 by movement of the valve ends. An auxiliary, main-cylinder, forward exhaust port 24 is controlled by the flange 32. Annular locking-areas adjacent the flanges 32 are supplied with fluid through passages 35, 36 from the main ports 25, 26. The valve-chest has ribs 41, 43, 44 engaging the valve parts. The valve is thrown by pressure fluid from the cylinder engaging one of the flanges 31 to move one half, and by compression acting on an annular area on the other half to cause it to move at the same time. Each half of the valve is inserted from its own end of the casing. The cylinder 10 is provided with a forward extension 11 housing a liner 16. A twist bar 17 and ratchet mechanism 18 are arranged at the rear.
Patent GB-702383-A (GB)
Title: Improvements in or relating to apparatus for working turf
IPC: A01B45/02
Filed: 1949-12-31
Abstract: 702,383. Implements for working land; rollers. HARGREAVES & CO., Ltd., W., and HARGREAVES, D. B. [Representative of HARGREAVES W.] Jan. 1, 1951 [Dec. 31, 1949], No. 33466/49. Class 6 (1) A machine for working turf comprising a frame having ground wheels some of which are driven and a working unit pivoted to the frame and resting pendulously on the ground is characterized in that spring means operate between the frame and the unit controllable so as to vary the pressure of the unit on the ground. As shown, a two wheeled tractor is provided with a seat 13 supported by wheels 14. Brackets 15 carry a draw-bar 16 to which is pivoted a pair of links 17 on which is mounted turf piercing units shown with alternative forms of piercing elements 20a, 20b, 20c. A sleeve mounted on the drawbar 16 is provided with a lever 22 and depending arms 23. On each link 17 is pivotally mounted a bracket 24 through which passes a rod 25 pivoted to the adjacent arm 23. A coil spring operates on the rod between the bracket 24 and an abutment 28. The piercing units are loaded by adjusting the lever 22 which may also be used to raise the units out of contact with the ground. In a modification the springs are connected to the manipulating handles of the tractor. Specifications 441,768 and 644,244 are referred to.
Patent GB-177572-A (GB)
Title: Improvements in steam engines, water motors and the like
IPC: F01L33/02
Filed: 1920-11-26
Abstract: 177,572. Zwicky, J. Nov. 26, 1920. Oscillating conical and cylindrical valves; spring gears operating in both directions.-Steam-engines, compressors, water motors, &c. are provided with pairs of coaxial cylinders 1, 2 to which fluid is distributed by a slightly-conical transverse, oscillating valve divided into inlet and exhaust compartments by a diaphragm 11. The valve has inlet and exhaust ports 12, 13, 14, 15 which register alternately with cylinder ports 20, 21. The valve is moved by a frame 27 reciprocated by tappets on the piston-rod. Lugs on the frame compress springs 34 engaging a block on a crank 35 on the valve spindle 10. The initial movement of the valve is prevented by a lug 26 which engages, temporarily, the upturned end of a second crank 25 on the spindle. The movement of the valve is limited by a stop 36. Oil may be pumped directly by the power piston, and exhaust steam passed through the rod 4 in the case of a heavy and viscous oil to facilitate its movement.
Patent GB-959825-A (GB)
Title: Improvements in or relating to vehicles for travelling over land and/or water
Inventor: COCKERELL CHRISTOPHER SYDNEY
IPC: B60V1/04
Filed: 1959-10-02
Abstract: 959,825. Air cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. Sept. 30, 1960 [Oct. 2, 1959], No. 33535/59. Heading B7K. A vehicle for travelling over a surface and which, in operation, is supported above that surface, at least in part, by a cushion of pressurized gas formed and contained beneath the vehicle, comprises means for reducing the variations in vertical thrust exerted by the supporting gas cushion in the underside of the vehicle which would otherwise occur from variations in volume of the cushion as a result of variations in the height of the vehicle above the surface from a predetermined value. In its simple form, wherein the supporting cushion is formed in a space 1 by pressure air discharged from a duet 8, the end walls 6 are formed with apertures 11 normally closed by flap valves 11, the front one opening inwards and the rear one outwards, the doors being loaded to maintain the cushion pressure at an optimum value. If as the result of the vehicle passing over a surface trough whereby the cushion pressure is reduced below atmospheric pressure, the forward valve 9 will open to admit air to the cushion and thereby reduce the loss of lift. Similarly if the cushion pressure should exceed the predetermined value the rearward valve 10 will be forced open to restore the cushion pressure to normal. To dispense with walls 6 the valves may be located in upwardly and outwardly curving ducts which connect the bottom wall with the vertical walls (Fig. 4, not shown). An alternative embodiment (Figs. 5 and 6, not shown), employs a vertical central duct connection the cushion chamber with atmosphere and formed with transverse flaps which may pivot upwardly or downwardly in response to changes in cushion pressure against the restraint provided by centralizing springs. Instead of spring-biased valves, the cushion pressure may be used to control fluid pressure apparatus for adjusting the valves (Fig. 8, not shown). In the arrangement of Fig. 10 the annular supply port 43 is provided with a plurality of slide valves 44, each operated by an actuator 47. By this means the curtain may be thickened or attenuated with consequent variation in cushion pressure. Other embodiments disclose pivoted flap valves or slide valves associated with concentric annular supply ports in a recirculating curtain system and in still further embodiments, the area of the cushion may be varied as the height of the vehicle varies. Apart from cushion pressure adjustment may be in response to vertical velocity or accleration. Specifications 893,715, 919,350, 935,824 and 935,826 are referred to.
Patent GB-664699-A (GB)
Title: Improvements in or relating to recording apparatus
IPC: F16B7/18
Filed: 1948-12-30
Abstract: 664,699. Recording apparatus. SERVICE RECORDER CO. Dec. 30, 1948 [Sept. 24, 1948], No. 33552/48. Classes 106 (iii) and 106 (iv). A recorder comprising an openable casing enclosing a time record sheet associated with tracing means movable relatively thereto and adapted to trace a line thereon, is so arranged that the tracing means makes a distinctive mark on the sheet when the casing is opened or closed. Recording rest or motion. The apparatus, which records the state of rest or motion of a vehicle or a machine and also when the recorder casing is opened and closed, comprises a clockwork or electrically-rotated paper time disc 5, Fig. 1, in the front half 1 of a casing, and a pivoted lever arm 10 carrying a stylus 11 in the back half 2 of the casing, the two halves of the casing being hinged at 3. The lever arm 10 has a weight 12 at its lower end such that, when the vehicle or the machine is in motion, the resultant vibration rocks the weight 12 and causes a thick line 32, Fig. 7, to appear on the disc 5 by means of the stylus 11. During rest periods the stylus leaves a thin line 31 on the disc. The pivot 13 for the arm 10 is on one arm of a bifurfurcated member 9, the other arm of the member 9 being pivoted to a bracket 8 such that when the casing is closed clamping fingers 6 and 7 holding the disc 5 in position, engage with and drive an actuator 16 turning the member 9 about the bracket 8. In this manner, a spiral record is made on the disc 5. The disc 5 is preferably coloured red and given a thin coating of wax. Recording opening and closing of casing. Below the stylus 11, Fig. 2, the paper disc 5 rests on the head 25 of a plunger 21, the head 25 being normally held above a surrounding sleeve 20. Unlocking of the casing depresses one end 30 of a pivoted lever 26, the other end of which raises the said sleeve 20 and thereby the paper 5 above the supporting head 25 to cause the stylus to puncture or permanently mark the sheet as at 33. When the casing is closed a similar impression 34 is made until the casing is locked, when the sleeve 20 falls below the supporting head 25 and normal recordings are then made. Specifications 294,189, 295,981, [both in Class 106 (iv)], and 388,139 are referred to.
Patent GB-1089529-A (GB)
Title: Process-heating control system
IPC: D21F5/02
Filed: 1966-07-26
Abstract: 1,089,529. Automatic temperature control. PYROTEL CORPORATION. July 26, 1966 [July 27, 1965], No. 33594/66. Heading G3R. A system for automatically controlling the temperature of a heated process roll such as may be used in the manufacture of synthetic fibres and the like comprises a rotatable, hollow roll 1 heated by an internally disposed infrared heater 2, an infrared detecting element 6 being positioned to provide a signal representing the temperature at the outer surface of the roll, the signal being fed to an amplifier-controller 5 so as to control the heating effect of the infrared heater 2 to maintain the temperature of the roll surface constant. To enhance the operation of the system the internal surface 3 of the roll is coated with an infrared absorbent material and the outer surface 4 is treated so that it approximates to a black body radiator. If desired this latter treatment may be confined to a band 11 which co-operates with the detecting element 6. Impellers 7 may be provided to control the movement of air through the roll and the amplifier-controller 5 may effect control in an ON-OFF or proportional manner. The detecting element 6 may comprise a thermistor, a bolometer, a photo-conductive or a photo-voltaic element.
Patent GB-652264-A (GB)
Title: Improvements in or relating to pressure measuring apparatus
IPC: G01L23/22
Filed: 1947-12-23
Abstract: 652,264. Actuation of switches. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Dec. 23, 1947. No. 33899. Convention date, Oct. 4, 1946. [Class 38(v)] [Also in Groups XIX and XXXVIII] In an electrical pressure measuring system (see Groups XIX and  XXXVIII), a testing de vice includes a diaphragn 7 acted on opposite faces by the pressure to be mea sured and a known pressure. The diaphragm and a member 2 form an electric switch which is closed when the former pressure reaches the latter. A slightly modified testing device is described Fig. 5, (not shown).
Patent GB-363982-A (GB)
Title: Improvements in drills for rock, marble and the like
IPC: E21B10/00
Filed: 1931-03-13
Abstract: 363,982. Drills. KRUPP AKT.-GES., F., Essen, Germany. March 13, 1931, No. 34020. Convention date, Nov. 8, 1930. Divided on 363,913. [Class 83 (iii).] A drill comprising a hard metal cutter A soldered between supporting flanges B has a triangular recess a<2> formed in the point of the cutter, the sides curving inwardly towards the point. Grooves a<1> are formed in the curved portion, a groove on the opposite side preferably corresponding in position to that portion lying between the grooves on the side shown.
Patent GB-470226-A (GB)
Title: Improvements in or relating to apparatus for varying the pitch of an aircraft propeller during flight
IPC: B64C11/36
Filed: 1936-12-11
Abstract: 470,226. Airscrews. GABA, A. E. Dec. 11, 1936, No. 34105. Convention date, Dec. 17, 1935. [Class 114] Variable-pitch propellers in which the power for actuating the pitch changing gear is derived from the propeller drive includes a primary gear operated direct from the propeller hub which drives simultaneously two secondary gears from which motion in opposite directions is taken selectively. A gear wheel 1 is keyed to the propeller hub E and gears with pinions 2, 2b keyed on lateral shafts 3, 3b which are adapted to be clutched to sleeves 6, 6b, carrying bevels engaging bevels 5a on a transverse shaft 5 carry. ing a worm T which operates the gears on the blade roots. For increasing the pitch the arm 11 is moved to cause the fork 9 to engage the clutch 7, 8 and shaft 5 is thereby rotated. Operation of the arm 11b results in opposite movement of shaft 5 through the clutch 7b, 8b and thus a reduction in pitch. When in the disengaged position the slidable part 7 of the clutch is held at rest by a stop 12 which engages one of a number of depressions 7a on its rim. The clutch is released in the limiting position of blade adjustment by a stop 15a engaging an arm 9a on fork shaft 10, this stop being on a nut 15 which moves along a screwed shaft 13 which is rotated by gearing from a shaft 14 splined to a bevel 14a which is in mesh with the bevel 6a. For indicating the position of the blades a rod 17 is used which is held against rotation but has a threaded engagement with a tapped bore 14c on the shaft. In a modification providing a slow-speed control the drive to shaft 5 is by worm gear from one sleeve only and the two sleeves have a geared connection. Also an extension of the shaft 5 carries directly a worm gear for operating the sliding limit stop. In a further modification the two rates of speed control are provided for by combining the two previous constructions and using two additional clutches for selecting the particular rate of speed control desired. Specification 430,223 is referred to.
Patent GB-1435786-A (GB)
Title: Thiourea derivatives and pesticidal compositions containing them
IPC: C07C67/00
Filed: 1973-07-18
Abstract: 1435786 Thioureas CIBA-GEIGY AG 18 July 1973 [24 July 1972] 34258/73 Heading C2C Thioureas of a general formula in which R 1  represents halogen, preferably chlorine or bromine, or the methyl group, R 3  represents C 1 -C 4 -alkyl, preferably C 1 -C 2 -alkyl, R 3  represents methyl or allyl, R 4  represents C 2 -C 5 -alkyl, C 3 -C 5 -alkenyl, C 3 -C 5 -alkynyl, or hydroxy- or cyano-substituted alkyl, benzyl, cycloalkyl-alkyl or tetrahydrofurylalkyl are prepared by reacting an isothiocyanate of the formula with an amine HNR 3 R 4 . Compounds claimed per se are 1-isobutyl-1- methyl - 3 - (2 - methyl - 4 - chlorophenyl) - thiourea; 1 - ethyl - 1 - methyl - 3 - (2 - methyl - 4- chlorophenyl) - thiourea; 1 - n - propyl - 1- methyl - 3 - (2 - methyl - 4 - chlorophenyl) - thiourea; 1 - isopropyl - 1 - methyl - 3 - (2 - methyl- 4 - chlorophenyl) - thiourea; 1 - n - butyl - 1- methyl - 3 - (2 - methyl - 4 - chlorophenyl) - thiourea; 1 - sec - butyl - 1 - methyl - 3 - (2 - methyl - 4 - chlorophenyl) - thiourea; 1 - tert. - butyl- 1 - methyl - 3 - (2 - methyl - 4 - chlorophenyl)- thiourea; 1 - n - propyl - 1 - methyl - 3 - (2- methyl - 4 - bromophenyl) - thiourea. The compounds have pesticidal properties.
Patent GB-1096088-A (GB)
Title: Switching means for the production of impulses
Inventor: ARMGARTH DIETRICH
IPC: H03K19/084
Filed: 1966-07-29
Abstract: 1,096,088. Logic circuits. HALBLEITERWERK FRANKFURT (ODER) VEB. July 29, 1966, No. 34265/66. Heading H3T. A logic circuit comprises a transistor 14 having inputs 1, 2, 3, 7 applied through one or more diodes 11, 12 to its base, and emitter coupled to a grounded-emitter output transistor 16, with means for rapidly removing the charge on the base of transistor 14 comprising diode 24 connected to a tapping on a voltage divider 20, 21 which is returned to earth or a reference potential. Switching speed can be improved further by joining capacitors across diodes 11, 12 and/or resistor 21. The circuit can be made in integrated form. In operation, the diode 24 and voltage divider ensure that transistor 16 is reliably bottomed even in the presence of large interference.
Patent GB-499916-A (GB)
Title: Improvements in or relating to ports of furnaces
IPC: F27B3/00
Filed: 1937-12-11
Abstract: 499,916. Gaseous - fuel furnaces. DORMAN, LONG, & CO., Ltd., and MOODY, C. Dec. 11, 1937, No. 34390. [Class 51 (i)] Cooling medium is supplied to the water jacket of a port for open hearth furnaces and the like of the kind described in Specification 490,606, through longitudinal pipes 10 having their discharge ends adjacent the inner end 6 of the jacket circumferentially spaced and bent at an angle so as to cause the water to swirl around the jacket before escaping through the discharge pipe 9. The inlet ends of the pipes 10 are provided, as shown in Fig. 6, with twoway valves 16 connected by pipes 17 to the normal water supply manifold 18 and having unions 19 for connection to a high pressure fluid supply pipe 20 for cleaning purposes.
Patent GB-390261-A (GB)
Title: Improvements in or connected with pre-payment gas or like meters
IPC: G07F15/02
Filed: 1931-12-12
Abstract: 390,261. Prepayment mechanism for meters. METERS, Ltd., Blackfriars House, Parsonage, Manchester, and BARLOW, G., 171, Windsor Road, Oldham. Dec. 12, 1931. No. 34452. [Class 27.] Coin action, mechanical-connection and with delivery proportionate to value of coin.-In a prepayment gas or like meter adapted for operations by the insertion of coins of different denominations, the coins, pennies or shillings are inserted through a slot b<2>, Fig. 4, in a pricechange disc b forming the cover for a cylindrical vertical casing a, Fig. 2, containing two measuring wheels d, e of different diameters to be engaged and ariven by pennies and shillings respectively. The coins drop between a pair of guiding brackets c' pendent from a disc c rotatable by a vertical handle c<1>, or by an horizontally arranged handle c<1x> which rotates the plate c through gears c<3>, c<4>, Fig. 6. The coins rest between their respective wheels and the vertical wall a<1> of the casing a, and are carried round to a discharge slot in the bottom plate of the casing by the brackets c<7>. Plates d<2>, e<1> carried by the wheels d, e prevent halfpennies or sixpences from engaging with and' driving these wheels. A conical or rounded plate d<1> on the upper surface of the wheel d directs the coins into proper driving position. The wheel d is fixed on a spindle g<1> having a bearing in the bottom plate of the casing and in the axle c<5> of the plate c. The spindle g<1> has a wheel g meshing with the large wheel g<2> of a compound wheel g<2>, m<1> which is provided with V-teeth g<3> to operate usual screw-and-nut quantity mechanism controlling the gas valve. The wheel e is fixed to a sleeve loose on the spindle g<1> and having a wheel m meshing with the wheel m<1>, the gearing being such that the compound wheel is rotated twelve times as much for a shilling as for a penny. Coin-discharging mechanism.-Springs f<1>, f<2> carried by an upstanding arm f ensure the ejection of the coins from the wheels through the discharge slot.
Patent GB-852927-A (GB)
Title: High octane motor fuels
IPC: C10L1/06
Filed: 1958-10-28
Abstract: A high octane gasoline composition contains 40 to 95% by volume of alkylate, 0 to 35% by volume of catalytic reformate and 5 to 60% by volume of catalytic naphtha and/or catalytic C5 hydrocarbons.  The alkylate boils between 100 DEG F. and 360 DEG F. and is produced by the alkylation of a low molecular weight isoparaffin, e.g. isobutane or isopentane, with a C3, C4 or C5 olefin.  The catalytic reformate boils between 100 DEG F. and 400 DEG F. and is produced by reforming naphtha with a reforming catalyst in the presence of hydrogen and at elevated temperature and pressure.  The catalytic naphtha and/or catalytic C5 hydrocarbons boil up to 300 DEG F. and are derived from the product stream of a catalytic cracking unit in which gas oil, for example, is cracked.  The gasoline composition is stated to have a higher octane number than that expected from a consideration of the octane numbers of the components of the composition.  The composition may also include tetraalkyl lead compounds, halohydrocarbon scavengers, solvent oils consisting of hydrocarbon mixtures of specified viscosity, corrosion inhibitors, gum inhibitors, anti-icing agents, dyes and dye stabilizers.  The composition may also include other fuel constituents, e.g. polymer gasoline and butane.
Patent GB-834609-A (GB)
Title: Control apparatus for superchargers for internal combustion engines
IPC: F02B37/18
Filed: 1957-11-05
Abstract: 834,609. Charge pumps. GARRETT CORPORATION. Nov. 5, 1957 [Nov. 6, 1956], No. 34494/57. Class 7(2) [Also in Group XXIX] An exhaust by-pass 23 of an exhaust driven turbo-supercharger 16, 17, is controlled by the compressor inlet and outlet pressures to maintain a constant pressure ratio across the compressor 17. The bypass 23 is controlled by a poppet valve 27, Fig. 2, connected to a spring-loaded piston 36 which is adjusted by a fluid pressure set up in chamber 35 by an engine driven lubricating pump 13 and controlled by a bleed valve 51, Fig. 4, actuated by a diaphragm 60 which is subjected to the compressor inlet and outlet pressures conducted through lines 65, 66, to the chambers 62, 61. The chamber 35 is connected to the pump 13 by a pipe 40 and to the space above valve 51 by a pipe 42, the fluid escaping through valve 51 being returned to reservoir 64. The effective area of the upper surface of diaphragm 60 is reduced by a bellows 68 connected to an adjustable stud 70 to produce the desired pressure ratio across the compressor 17, the diaphragm 60 holding the valve 51 open at stable coriditions a sufficient amount to set up a pressure in chamber 35 which holds the by-pass valve 27 open an amount which maintains the turbine 16 and compressor 17 at a speed which produces the desired pressure ratio. A second diaphragm 58 connected to the diaphragm 60 and normally subjected to compressor inlet pressure on both sides moves the valve 51 wide open to put the compressor out of operation if the diaphragm 60 ruptures.
Patent GB-832577-A (GB)
Title: Improvements in or relating to hydraulic control valve units
Inventor: HAYES HUBERT GEORGE
IPC: B23Q35/36
Filed: 1957-11-07
Abstract: 832,577. Copy-milling. HAYES ENGINEERS (LEEDS) Ltd. Nov. 5, 1958 [Nov. 7, 1957], No. 34723/57. Addition to 830,929. Class 83 (3). An hydraulic control valve unit, as claimed in Claim 1 of the parent Specification, comprises a tracer-carrying member 27 movable axially in an element 6 having a flange mounted in ball. bearings for movement transversely of the member. The member 27 abuts a valve 35 directly, or by an interposed ball. The valve is biased by a spring 38.
Patent GB-839139-A (GB)
Title: Improvements relating to windscreen wipers
Inventor: PURSE BERNARD JOHN
IPC: B60S1/36
Filed: 1957-11-07
Abstract: 839,139. Windscreen cleaners. TRICOFOLBERTH Ltd. Nov. 7, 1958 [Nov. 7, 1957], No. 34776/57. Class 138 (1). A windscreen wiper arm consists of a head for attachment to the oscillating shaft of a wiper, an inner arm portion which is pivotally connected to the head, and an cuter arm portion secured to the inner arm portion by a wedge which is urged by a compression spring into engagement between the outer arm portion and part of the inner arm portion. As shown, a channelshaped inner arm portion 6 is pivoted at 4 to a head 2 and a yoke 12 pivotally attached thereto carries a rod 14 surrounded by a spring 16 the pressure of which on a wedge 20 can be varied by a nut 18. Wedge 20 engages between a bush 24 and a strip 26 of the outer arm, locking strip 26 against inner arm 6. The strip 26 may have notches to receive the outer end of the wedge 20 in different settings of the arm. When manually cleaning the windscreen the wipers can be swung away therefrom through 90 degrees until edge 29 abuts a shoulder 28.