baber/WOPTO huggingface dataset:
Patent GB-495892-A (GB)
Title: Process for the production of salts of thiocyanic acid
IPC: C07C245/08
Filed: 1937-06-24
Abstract: Salts are prepared by reacting thiocyanic acid and 2,4-diaminoazobenzene.  In examples: (1) the base, dissolved in chloroform or other suitable solvent, is treated with aqueous thiocyanic acid and the precipitate is re-crystallized from ethyl alcohol; (2) the base is suspended in a 5 per cent aqueous thiocyanic acid solution and the resulting salt is purified as in (1).  The single or double thiocyanate is formed depending on the relative quantities of reagents.
Patent GB-1424229-A (GB)
Title: Internal combustion engine exhaust emission control systems
IPC: F01N13/02
Filed: 1973-04-12
Abstract: 1424229 Catalytic treatment of exhaust gas GENERAL MOTORS CORP 12 April 1973 [26 April 1972] 17621/73 Headings B1F and B1W [Also in Division Fl] Exhaust gas flowing from the I.C. engine combustion chambers 12 to the exhaust pipes 92 via the exhaust manifolds 46 and 48 and the catalytic converters 82, projecting from the manifolds, is selectively caused to flow through the catalyst beds 84 and 86. A valve 62 between each manifold 46 or 48 and its associated converter 82 may close the manifold outlet 60 so that the exhaust gas flows through a crossover passage 34 or 36 in the engine into the converter below the beds. Alternatively, the valve 62 may occupy a position 94 or 104 in which the exhaust gas flows in series through the beds 84, 84 or passes to the outlet 90 without flowing through the beds. Air from a pump 50 is supplied through pipes 52 and 54 to the engine exhaust passages immediately downstream of the exhaust valves and through pipes 102 to the converters beneath the beds 84, 86. Valves 98 and 100 control air flow through the pipes. A valve 76 controls exhaust gas flow through each crossover passage 34, 36. The catalyst bed 84 is adapted to reduce oxides of nitrogen under reducing conditions and the bed 86 is adapted to oxidise exhaust gas constituents under oxidising conditions. In operation of the engine from cold starting the valves 62 and 100 are closed and the valves 76 and 98 are open so that the exhaust gas is subject to oxidation in the manifolds 46, 48. The exhaust gas heats the mixture from a carburettor (20), Fig. 1 (not shown), flowing to the chambers 12 through a chamber (26), Fig. 3 (not shown), separated from the crossover passages 34, 36 by a wall (64) which may have fins. From the chamber (26) heated by the crossover passages the exhaust gas passes through the beds 84, 86 to the converter outlets 90. After a period of time the valves 76 and 98 are fully or partially closed, the valve 62 is moved to the position 94 and the valve 100 is opened so that reducing conditions occur in the gas flowing through the bed 84 and oxidising conditions in the bed 86. Above a predetermined temperature in one of the converters or above a predetermined engine speed the valve 62 is moved to the position 104 so that the exhaust gas can flow to the converter outlets 90 without passing through the beds 84, 86. The valve 100 may be open or closed when the valve 62 is in position 104 and the valve 98 may be open. The air and exhaust gas control valves may be controlled by vacuum motors under the control of a sensor circuit. The exhaust gas from the crossover passages may be introduced into the converters 82 above the beds 84 for series flow through the beds 84, 86.
Patent GB-1218501-A (GB)
Title: Supporting arrangement for transportable machinery
Inventor: CLOWES ANTHONY WILLIAM
IPC: B60P3/00
Filed: 1969-04-08
Abstract: 1,218,501. Excavators. A. W. CLOWES. 8 April, 1969, No. 17744/.69. Heading H1F. A vehicle-mountable support frame for an excavator unit comprises at least two arms 3 for securing to the chassis members of the back of an open vehicle to extend beyond the rear thereof, a strut 5, preferably of U-cross section, extending downwardly from the rear of each arm, an excavator unit-carrying frame 8 pivotally secured at 7 to each support at the top thereof, a means-one or more piston cylinder motors 11, connected between the arms and the frame so that the frame may be swung up from a position in which it abuts the supports when the excavator is in use to a position in which movement of the vehicle between work sites is facilitated.
Patent GB-1453238-A (GB)
Title: Throttle valve with flow-responsive regulating means
IPC: F16K17/34
Filed: 1974-04-23
Abstract: 1453238 Valves DESTA NARODNI PODNIK 23 April 1974 [6 July 1973] 17754/74 Heading F2V A valve for use in a fork-lift truck has a closure member 8 with bores 12 to allow full flow during lifting and a second closure member 5 to throttle reverse flow through bores 13 during lowering. The valve 5 is secured by a circlip 9, loaded by a spring 4, and has a sharp lower edge to reduce noise.
Patent GB-1014975-A (GB)
Title: Line tracing apparatus
Inventor: KING BRIAN EDMUND
IPC: B23Q35/40
Filed: 1963-05-06
Abstract: 1,014,975. Photoelectric line followers. BRITISH OXYGEN CO, Ltd. May 6, 1964 [May. 6, 1963], No. 17776/63. Heading G1A. A line follower comprises a scanning member mounted for oscillation on a piezo-electric crystal. A photodiode 13 is stuck to the end of a rectangular section piezo-electric crystal 14 silvered on its larger faces to provide electrodes for the application of a 50 c.p.s. alternating current to the crystal. The crystal is resonant at the applied frequency or a sub-multiple thereof and is strengthened by a spring steel bar 30. A bush 16 supporting the crystal is rotatable in the housing 10 in known manner in accordance with the output of photodiode 13. Connections are made to the photodiode and the crystal by slip rings 20, 21 and 22. Instead of the photodiode, the scanning member may be a shutter or other optical element directing light to a fixed detector.
Patent GB-883870-A (GB)
Title: Improvements in wiring boards
IPC: H05K1/00
Filed: 1959-05-25
Abstract: 883,870. Printed circuits. VERO PRECISION ENGINEERING Ltd., WINTER, P. H., and FITZPATRICK, T. April 11, 1960 [May 25, 1959; Nov. 6, 1959], Nos. 17790/59 and 37791/59. Class 37. A printed circuit board comprises an insulating board 10 on at least one side of which is bonded regularly spaced strips 11 of copper or other conducting material, the board being perforated by a multiplicityof regularly distributed holes 12 which extend at spaced intervals through each of the conducting strips. Terminals 13 of components 14 are inserted through the holes 12 and soldered to the strips 11, the latter then being interrupted as indicated at 15 by a spot-face cutter 30 as to produce the desired circuit configuration. The strips 11 may be formed by covering the board 10 with a sheet of copper and removing unwanted portions by mechanical means or by applying the strips separately.
Patent GB-855649-A (GB)
Title: Improvements in oil heaters
IPC: F24H1/10
Filed: 1958-06-04
Abstract: 855,649. Electric oil pre-heaters. WAUGH Ltd., A. K., and WAUGH, A. K. June 3, 1959 [June 4, 1958], No. 17856/58. Class 39(3). An oil heater, e.g. for pre-heating oil supplied to oil burners, comprises a cylindrical vessel 10 with an oil inlet 12 or 12a and an outlet 13 an electric heating element 11, and an oil filter 15 positioned directly above the heating element. The filter may be in the form of a cylindrical wire cage. The heating element may be controlled by a thermostat 11a.
Patent GB-1162728-A (GB)
Title: Improvements in or relating to Apparatus for Coin Counting and Dispensing
Inventor: HEYWOOD JOSEPH RICHARD
IPC: G07D1/00
Filed: 1968-04-16
Abstract: 1,162,728. Counting coins. AINSWORTH CONSOLIDATED INDUSTRIES PTY. Ltd. 16 April, 1968 [13 April, 1967], No. 17940/68. Headings G4D and G4V. Apparatus for counting out a predetermined number of coins, especially in a gaming machine, comprises photo-electric apparatus responsive to the leading edge of a coin to produce a pulse of specific duration, an S.C.R. counter which batches a set number of coins, and a timer which prevents passage of further coins after a predetermined time if the counter should fail. The counter is settable to different numbers and the timer is likewise settable to appropriate times.
Patent GB-654108-A (GB)
Title: Improvements in or connected to winches
IPC: B66D1/26
Filed: 1947-07-08
Abstract: 654,108. Winches. CATERPILLAR TRACTOR CO. July 8, 1947, No. 17970. Convention date, Oct. 10, 1946. [Class 78 (v)] A cable control unit (e.g. for a tractor) comprises a housing 10, a winding-drum 29 therein, a driven shaft 23 coaxial with the drum, a clutch 31-33 interposed between the shaft and the drum, an axiallymovable pressure-plate 35 surrounding the shaft for effecting engagement of the clutch; and thrust means 42 interposed between the pressure-plate and the shaft whereby reaction pressure caused by clutch engagement will be transmitted to the shaft, said means comprising a first threaded member 39 supporting the pressure-plate and a second threaded member 41 and connections between said second threaded member and the shaft and the housing. Fig. 1. Drums 29, surrounded by housing 10 having removable plates 11 are loosely mounted on frame parts 26 within which rotates shaft 23 ; and are each driven from the tractor through shaft 14 and then through bevel gears 15 and 16, pinions 19 and 20, gear-wheel 22 secured to shaft 23, inner clutch drum 33 and outer clutch drum 31 which each carry clutch members 34 ; the clutch drum 31 being secured to drum 29 and also serving as a brake drum for brake-band 32. To clutch the drum 29 to shaft 23, the complementary clutch-members 34 are pressed together by movable pressure-member 35. Fig. 2. Pressure-plate 35 is rotatably mounted by means of bearings 36 on annulus 39 which is threadedly engaged with fixed member 41. Rotation of handle 52 which is secured to annulus 39 thereby causes pressureplate 35 to travel to the left and clutch the drum 29 to the shaft 23. Inner clutch drum 33 is secured to shaft 23 by screws 46 which press plate 45, bearing 42 and washer 43 against annular extension 44 of the clutch drum 33. Fixed member 41 is secured to cap 47 by screw 48, both member and cup projecting out of the casing 10, and a slit 54 is made in the casing and a screw 55 passed across the slit so that the two edges of the casing grip member 41 to prevent it from rotation.
Patent GB-1203117-A (GB)
Title: Pavement cutting machine
Inventor: SIMMS GLEN EDWARD
IPC: E01C23/09
Filed: 1968-04-16
Abstract: 1,203,117. Road grooving and cutting machines. SUPER-CUT, Inc. 16 April, 1968, No. 17977/68. Heading E1G. In a self-propelled rotary cutting machine for cutting grooves in or removing bumps from a road surface, a single or multiple saw blade 74 driven by an engine 58 is mounted on a three-wheeled frame 16-18 which is horizontally telescopic to vary the spacing between the front and rear wheels. The machine may thus be used either (when extended as shown) for removing bumps or (when contracted to bring the front wheels adjacent the saw blades, Fig. 3 not shown) for cutting constant-depth grooves. The engine 58 and saw blades 74 are mounted on an auxiliary frame 14 which is raised and lowered about a horizontal pivot 52 by a hydraulic cylinder 54, the depth of cut being adjusted by swinging the desired number of superposed pivotal levers 84 into the path of stop screws 76. The single rear wheel 38 is chain-driven by a hydraulic motor and is steered by a handle 50. The frame 4, Fig. 7 (not shown), carries pivotal struts (88) which may be lowered on to the road surface so that the front wheels 36 may be raised off the road by the cylinder 54 to allow adjustment of the telescopic frame.
Patent GB-298266-A (GB)
Title: Improvements in and relating to friction gearing
IPC: F16H13/14
Filed: 1927-07-07
Abstract: 298,266. Garrard, C. G. July 7, 1027. Friction gearing; friction wheels.-In friction rearing, rollers 9 arranged between concentric friction surfaces 18, 20 are movable radially and are provided with cylindrical surfaces 14 and curved or coned surfaces 15 for engaging cylindrical surfaces on one of the concentric surfaces and coned or curved surfaces on the other. The rollers may run upon rollers 13 formed of flexible helical strips bearing upon pins 12 which may slide radially in a cage 7, 8, 10 turning in bearings 11 in the casing. The cage is secured to the driving-shaft 6 and the surface 18 is formed on the driven shaft 16, carried in bearings 17 in the cage. The non-rotating surfaces 20 are formed on rings 19, 19<a> pressed apart by springs 24 to initiate the clutch engagement and provided with interengaging cam surfaces 23. The ring 19 slides axially on splines 21 in the casing, and the cam action ensures adequate frictional engagement in the gearing. The pairs of divided coned or curved surfaces may be provided upon any one of the three frictional elements concerned, and two or more pairs may be substituted for a single pair. A non-divided element may slide axially. As applied to variable-speed gearing, means are provided for stationing the cage or one of the concentric frictional elements, leaving the two remaining elements free for connection to the shafts or other members to be geared together.
Patent GB-855053-A (GB)
Title: Integral well head unit and method of fabricating the same
IPC: E21B33/03
Filed: 1959-05-27
Abstract: 855,053. Oil wells. OIL CENTER TOOL CO. May 27, 1959 [Aug. 18, 1958], No. 18034/59. Class 85. [Also in Groups XXVI and XXIX] A well-head unit comprises a body 12 having a bore 14 intersected by transverse tapered openings 24, 26, 28 which receive non-rotatable valve bodies 50. As shown, the valves are of the plug type, but other types of valves may be used. Each valve body 50 has an outer surface tapered to complement the surface of the respective opening 24, 26 or 28 is threaded to receive a locking-ring 80 anc has a cylindrical bore 58 which receives a plug 60 having a bore for alignment with the bore 14, and a spindle 66 with a squared end 68 for an operating key. The plug 60 is retained in position by a screw plug 64. The valve body 50 is positioned, with the bore 54, 56, 14 in line, by a key and key-way 88 90. The junctions between the bores 14, 54 and 14, 56 are sealed by two grooves 100, 102 which encircle each of the bores 54, 56 O-sealing rings 104, 106 being placed in the grooves. The ring 104 in each of the oute grooves 100 is spaced from the inner wall o the groove, a passage 108, 110 serving for the injection of plastic into this space to rende the seal ring effective. The bores 16, 18 in the branches of the body 12 are likewise provided with non-rotatable valve bodies. In a modification, the tapered surfaces of the openings 24, 26, 28 and the bodies 50, are stepped, comprising cylindrical parts of successively decreasing diameter, joined by tapered parts. Grooves running circumferentially around the body 50 in the tapered parts thereof, receive tapered metal sealing rings which are made effective as the nut 80 is tightened. An O-ring surrounds each of the bores 54, 56, and plastic sealing material is injected into a circumferential groove in the body and, through a communicating channel, into a space between one of the metal sealing rings and an annular stop ledge in the bore 24. The well-head unit may be designed for dual tubing strings; the bores 14 may be fitted with a steel liner; and the unit may be combined, Fig. 8, with a tubing hanger 214 retained on its seat 218 by cone-headed screw pins 222. Laterally extending bores 230, 232 connect with the bore 212 beneath the hanger 214 and have transverse openings 234, 236 to receive valve assemblies as described above. The openings 240, 242 also receive valve assemblies. Advantageous residual stresses are produced in the body 12 by heating, cooling, re-heating, quenching by spraying the bore 14 and subsequent immersion, and tempering by re-heating, temperatures and times being given. Alternatively, body is subjected to high hydraulic pressure to stretch the inner wall of the bore beyond its yield point, so that this inner wall region is under compression when the hydraulic pressure is removed.
Patent GB-1471443-A (GB)
Title: Xerographic developing rollers having magnets of different  widths
IPC: G03G15/09
Filed: 1974-04-25
Abstract: 1471443 Developing electrostatic images XEROX CORP 25 April 1974 [26 April 1973] 18068/74 Heading G2H A magnetic brush development apparatus, or alternatively a magnetic transport apparatus associated with cascade development, incorporates at least one rotatable sleeve or belt 16, out of a plurality of rotatable members which together comprise the said apparatus, with a plurality of stationery magnets 22, 24, 26, 28 in its core, one of the said magnets being shorter in an axial direction of the rotatable member than another of the magnets of the same core. Preferably the magnets of core, and of the cores of cooperating rotatable members, are so related in length that the developer particles 14 are constrained in a narrowing band as they are carried upwards.
Patent GB-446048-A (GB)
Title: Automatic guard for power presses and like machines
IPC: F16P3/00
Filed: 1935-06-24
Abstract: 446,048. Machinery guards; linkwork. BLETCHER, S. W., 48, St. Heliers Avenue, Hounslow, Middlesex. June 24, 1935, No. 18084. [Classes 80 (iii) and 80 (iv)] Horizontal guard bars a are reciprocated along normally-vertical guide bars b in front of a press or like machine by linkwork, which, when the operatives hand is caught between the approaching bars, causes the mechanism to swing away from the machine as shown. The bars alternately approach and recede, and it is necessary to feed the machine during the interval when the bars are sufficiently spaced apart. The motion is conveyed from the shaft H by a pivoted link j, a link k loose on the transverse shaft d which supports the guard, a link l pivoted to an arm m loose on the shaft, a plate n and a rocker e both fast on the shaft, and links g, f. The guiding action may be obtained either by slots c, or sliding sleeves c<1>, or by one of each as shown, the mechanism being duplicated at the other side of the machine. The arm m is normallybolted to the plate n. If the bolt o be removed the drive is interrupted and the guard may be left hanging in situ or turned up out of the way. In each of these positions it may be secured by passing the bolt o through a boss fixed on the shaft d into a bracket B.
Patent GB-1115351-A (GB)
Title: Improved cracking catalyst compositions
IPC: B01J29/08
Filed: 1965-05-12
Abstract: The efficacy of novel catalyst compositions comprising a conventional siliceous component and 2-90% of a zeolite of formula <FORM:1115351/C4-C5/1> in which M is a cation having a valency n of not more than 4, x=0 to 0.2, y=0 to 9, the zeolite being characterized by an alkali metal oxide content of at most 4% and a stable structure as defined by a surface area greater than 150 m.2/gm. after calcination at 927 DEG  C. for 2 hours, is tested in a fixed-fluidized bed cracking unit at 495 DEG  C. using a West Texas heavy gas oil, a catalyst to oil ratio of 4 and W.H.S.V. of 1 to 20. C5 and gasoline recoveries are described together with R.O.N. of products.ALSO:A cracking catalyst comprises a conventional siliceous component and 2-90% of XM2 O:/n Al2O3:2-3SiO2:YH2O in which M is a cation having a valency of not more than 4, n has a value dependent upon the valency of M, X = O to 0.2, y = 0 to 9, this zeolite being characterised by an alkali metal oxide content of at most 4% and a stable structure as defined by a surface area greater than 150 sq. m./gm. after calcination at 927 DEG C. for two hours.  The silica is usually present in the catalyst as SiO2 - Al2O3 or SiO2-ZrO2, SiO2-MgO, SiO2-Al2O3-ZrO2, pure SiO2, or natural or synthetic clays. The zeolite may be base exchange with H\sW, Mg\sW\sW, Mu\sW\sW, Zn\sW\sW, Th4\sW, Al\sW\sW\sW or a rare earth cation.
Patent GB-727814-A (GB)
Title: Improvements relating to sealing devices
Inventor: WYNN ERNEST EDWARD
IPC: F16J15/32
Filed: 1952-07-18
Abstract: 727,814. Oil seats. CLARKE PRESSWORK CO., Ltd., G. June 29, 1953 [July 18, 1952], No. 18164/52. Class 122 (5). In a rubber oil seal 20 comprising inner and outer annular portions 201 and 202, the sealing surface 204 is pressed into contact with the shaft or other part to be sealed by equispaced webs 203 extending between and integral with the inner and outer portions, and arranged tangentially to the sealing surface 204. The seal is reinforced by a metal ring 21 which is bonded thereto and may have its outer peripher # coated with rubber. In a modification, Fig. '9 two oppositely facing inner annular portions 201 are provided and the outer annular portion 202 is formed with a'radial flange having on its free face a series of concentric ridges 205 that form a labyrinth seal with the housing in which the seal is installed.
Patent GB-253853-A (GB)
Title: Process for improving artificial fibrous materials
IPC: D06M11/40
Filed: 1925-07-16
Abstract: 253,853. Lilienfeld, L. June 17, 1925, [Convention date]. Yarns and threads, treating with liquids and vapours.-Artificial textile materials such as viscose silk, cuprammonia silk, and denitrated nitro-silk, are improved as regards their strength by treatment with a solution of caustic alkali of not more than 5 per cent strength, preferably of less than one per cent strength, it being a necessary condition that the material should be maintained in a stretched condition during at least part of the treatment. The material may be treated when in the form of threads, skeins, cops, &c., or as woven materials consisting of artificial textile materials alone, or mixed with cotton, silk, wool, &c. The alkali solution may be applied by passage of the material therethrough, or by spraying or by contact with moistened rollers, or by other methods. The material may be finally steamed or heated. In examples, artificial silk is passed through 0.2-0.3 per cent caustic solution, preferably while stretching the material, then dried, wound, washed with or without previous treatment with a solution of common salt, ammonium sulphate, acid, &c., and finally dried. Alternatively, the impregnated silk may be washed directly after impregnation, or treated with an acid, salt, &c. at this stage.
Patent GB-153637-A (GB)
Title: Improvements in and relating to apparatus for the continuous analysis of gases
IPC: G01N7/04
Filed: 1919-07-23
Abstract: 153,637. Wollaston, T. R. July 23, 1919. V a l v e - actuating arrangements. - In a double-acting pump adapted to deliver at opposite ends of its stroke equal volumes of gases, the piston rod q and tail rod q<1> are of equal diameter and work in similar stuffing-boxes, and the parts are adjusted so that there are equal and very small clearances at both ends of the stroke; the piston is actuated by two connecting- rods mounted on a common crank-pin s<2>; the valves u, v are of the piston type, and are actuated by a lever w slotted to embrace the crank-pin and arranged in such a manner, and in conjunction with clearances x, that the valves are rapidly reversed towards the ends of the stroke of the piston.