baber/WOPTO huggingface dataset:
Patent GB-1129576-A (GB)
Title: Servo-control apparatus for vehicle clutches
IPC: F16D48/02
Filed: 1967-05-30
Abstract: 1,129,576. Clutch control. DAIKIN SEISAKUSHO K.K. 30 May, 1967 [3 Aug., 1966], No. 24906/67. Heading F2L. In a clutch control system employing master and slave hydraulic units 4, 11 the pressure in the system is augmented during clutch disengagement by a compressed air operated servomotor unit 7. In the normal clutch engaged position shown communication is established between the supply pipes 8, 12 by ports 43, 46 in a fixed cylinder 46 and a movable sleeve 44 housing a spring loaded piston 87. Pipe 8 also communicates by a passage 53 with the left hand side of a piston 50, larger than piston 87, and connected to a common piston rod 89. Compressed air from a reservoir 9 is admitted through an inlet 10 to the servomotor 7, and a poppet valve 66 is normally held open to balance the pressures on a diaphragm piston 60. Initial depression of the clutch pedal causes movement to the right of both pistons 50 and 87 to close ports 43, 45 and thus cut off communication between pipes 8, 12 and trap the liquid in cylinder 46. At the same time poppet valve 66 is closed and the right hand servo chamber 58 is vented to atmosphere through an exhaust port 52. Further movement of the clutch pedal results in the pressure in pipe 8 being applied to piston 50, the hydraulic loading of which, supplemented by the pneumatic loading due to the air pressure in the left hand servo-chamber 59 acting on piston 60, is applied to piston 87 and thus to the .clutch operating liquid in cylinder 46 and supply pipe 12.
Patent GB-517903-A (GB)
Title: Improvements in electric contact making devices particularly for fuses and links
IPC: H01H1/52
Filed: 1938-08-26
Abstract: 517,903. Fuse contacts. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd, and GARNET, C. V. H. Aug. 26, 1938, No. 25130 [Class 38 (v)] Contacts 5 of a fuse or like link, are clamped on to a blade by a U-shaped backing member 7 with a pair of wedges 13 caused to move by a screw 9 to slide within the backing member. A bolt 8 may strengthen the backing member, the engaging blade being slotted to allow passage for it.
Patent GB-1529286-A (GB)
Title: Apparatus for contour plotting the total luminescence spectrum of a sample
IPC: G01N21/64
Filed: 1977-06-16
Abstract: 1529286 Investigating fluorescence BAXTER TRAVENOL LABORATORIES Inc 16 June 1977 [6 July 1976] 25167/77 Heading G1A Fluorescence from a sample is examined by a photo-detector and a scanning mono-chromator; after scanning the light emitted by the sample, the excitation wavelength is changed and the scan is repeated to produce a set of contour lines, Fig. 4, which show the relationship between excitation and emission wavelengths for given intensities of fluorescence. Such two-dimensional contour plots can be used to identify components in the sample. In Fig. 3, light source 21 illuminates sample 24 via a mono-chromator 22, the sample fluorescence being viewed by photo-multiplier 28 via a monochromator 26. A control circuit 42 sets monochromator 22, and then steps mono-chromator 26 through an emission range of interest; whenever the signal from photo-multiplier 28 equals a pre-set comparison value, the pen of X-Y plotter 30 makes a mask on the plot; after completion of the emission scan, the control circuit 42 steps monochromator 22 to another value, and the emission scan is repeated to build up the contour lines of Fig. 4. Modifications include: compensation for source intensity changes; increase of scan rate when the fluorescent intensity is only changing slowly with emission wavelength; use of a single stepper motor and clutches to drive both mono-chromators, Figs. 5 and 6 (not shown).
Patent GB-451160-A (GB)
Title: Improvements in or relating to electrical conversion systems
IPC: H02M7/51
Filed: 1935-09-10
Abstract: 451,160. Converting. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.-(Assignees of Ludwig, L. R. ; 635, Cascade Road, Forest Hills, Wilkins. burg, Pennsylvania, U.S.A.) Sept. 10, 1935, No. 25175. Convention date, Oct. 11, 1934. [Class 38 (ii)] In an inverter comprising valves having control electrodes means are provided responsive to premature ignition in any of the valves for increasing the energy available for commutation. In the form shown in Fig. 1, the negative bias on the grids of the valves 4, 5 is reduced when premature ignition occurs. This is effected by means of a valve 15 which is rendered conductive by an impulse from a current transformer in the D.C. supply, the impulse being produced by the sudden rise in current due to the ignition, and short circuits part of the bias battery 12 through a condenser 25. The reduction in negative bias advances the moment of ignition of the next succeeding valves so as to give extra energy for commutation of current. In a modification the grid control potentials are obtained from an auxiliary inverter comprising valves 40, 41, Fig. 2, the frequency of which is determined by its circuit constants. Included in the grid circuits of the valves 40, 41 are the secondary windings 51, 52 of a transformer so that premature ignition in one of the main valves results in a temporary advance of the ignition of the valves 40, 41. In order to prevent retardation of the ignition of the valves 40, 41 by a reduction of current in the main circuit rectifiers 55 are shunted across the windings 51, 52. Fig. 3 shows a form in which a synchronous motor 60 is supplied, increase in energy available for commutator being obtained in the event of premature ignition by a momentary increase in the back E.M.F. of the motor by means of a field winding 62 in series in the main circuit. This increases the E.M.F. available for commutation at the anodes of the valves. In a further modification, Fig. 4, the anode voltage is increased temporarily by switching in a pair of valves 70, 71, connected to a higher voltage tap on the transformer. This is effected by switches 75, 76 in the grid circuits operated by means of a current transformer in the D.C. circuit. The Specification as open to inspection under Sect. 91 comprises also the modification shown in Fig. 2 (Cancelled) in which an inductance 31 and resistance 30 are connected in series in the motor circuit, the grids of the valves 4, 5 being biassed by the voltage drop across the resistance 30. This subject-matter does not appear in the Specification as accepted.
Patent GB-227187-A (GB)
Title: Improvements in smoking pipes
IPC: A24F1/00
Filed: 1923-10-10
Abstract: 227,187. Small, J. Oct. 10, 1023. Tobacco pipes.-In a pipe in which the bowl and stem are divided horizontally along the bore the parts are joined by parallel-faced fillets 7 which are secured in longitudinal saw-cuts in the lower section 6 and slide in grooves in the upper section 5, the upper edges 8 of the fillets being enlarged. The mouthpiece 9 is carried by the part 6 and when the parts are assembled the other part 5 makes a joint with the mouthpiece at the mount' 10.
Patent GB-825723-A (GB)
Title: Improved machine for the manufacture of corrugated plates of asbestos-cement and similar products
IPC: B28B1/52
Filed: 1957-08-09
Abstract: 825,723. Moulding corrugated plates of asbestos-cement. COMPAGNIE DE PONT-AMOUSSON. Aug. 9, 1957 [Aug. 18, 1956; June 18, 1957], No. 25217/57. Class 87(2). A machine of the type having first and second fender mechanisms for bringing up one at a time to a forming station freshly made slabs of asbestos-cement still in a plastic state and rigid corrugated patterns respectively, has further feeder mechanisms one beneath the other for feeding the slabs onto the patterns, these latter mechnisms being combined with a control mechanism in such a way that the relative movement of each slab towards the pattern is quicker when the surface to be covered in a given time is greater, and slower when the surface to be covered in the same time is less. The delivery mechanism F, Fig. 2, consists of plates 24, 25 inclined at about 45 degrees and between which is a roller 26 driven by roller 21 via chain 27. This roller 26 together with the freely rotatable roller 28 delivers, at a periodically variable speed, slabs P of soft mixture to the corrugating mechanism G. The control mechanism, Fig. 10, has a fluted shaft 109 on which there slides a drum-can 110 having a groove 111 in which is engaged a roller 112 the axis of which is fixed at casing 71. The changespeed mechanism is formed by a screw-wheel 113 which is integral with drum-cam 110 and meshes with a screw-pinion 114 keyed to the shaft of roller 21. Axial movements of wheel 113 due to sinusoidal variations in the profile of groove 111 are imparted as rotary movements to pinion 114 which compound with the rotary movement transmitted by fluted shaft 109. The corrugating mechanism G has side-plates 36 freely rotatable on journal 35 and carrying three parallel rollers 38, 39, and 40 whose outer radius is equal to the radius of curvature of a wave hollow of the corrugated plates to be produced on the rigid patterns 43. The axes of these rollers form the sides of a right-angled prism having as its base an equilateral triangle whose side is equal to the wave length of the corrugations to be produced. In one modification of the corrugating mechanism G, the rollers are free to move in arched slots in the side-plates, the most central end of each forming the centre of curvature of one of the other slots and the three centres of curvature being located at the apex of the above equilateral triangle. In a further modification, three parallel rollers are used, two being coupled by short rods and connected to the other by further short rods articulated in the middle of the first.
Patent GB-261157-A (GB)
Title: Axle for tramway, railway and other vehicles
IPC: B60B35/12
Filed: 1925-10-09
Abstract: 261,157. Algrain, P. Oct. 9, 1925. Axles.-In a vehicle axle of the kind comprising two members fitting the one within the other and freely rotatable relatively to each other, relative longitudinal movement of the two members 1, 3 is prevented by abutments one of which is constituted by a cylindrical nut 15 which rotates with the member 1 and which is capable of fine adjustment. The part 1 is conical and is provided with a bearing sleeve 6 which forms the other abutment and is located in the end of a conical bore in the member 3, and the outer end of the conical bore is provided with a bearing sleeve 5 which abuts a shoulder 7 formed on the member 1. The nut and the member 1 are provided with a number of semi-circular holes, 20, 20<a>, Fig. 2, in their threaded portions some of which register at each partial rotation of the nut, the registering holes having pins 21 inserted therein to lock the nut. The pins 21 have enlarged heads and are prevented from working out of the holes by a plate 16 jointed to the end of the member 3. The vehicle may be supported on the axle either by outer journals 13 or by inner journals 14 or by both.
Patent GB-173818-A (GB)
Title: Improvements in the manufacture of neutral sulphate of ammonia
IPC: C01C1/242
Filed: 1920-09-04
Abstract: 173,818. Hansford, J. B. Sept. 4, 1920. Ammonium sulphate.-For the purpose of producing neutral ammonium sulphate directly, two saturators are connected with the ammonia supply, the waste gas outlet, and with one another so that the ammonia may pass through either saturator or through both in series or in parallel. Ammonia is passed into sulphuric acid in the primary saturator a until ammonia begins to escape, whereupon the cock e<1>, is closed so that the unabsorbed ammonia passes through the secondary saturator b containing acid. When neutrality is reached in the primary bath the ammonia supply is temporarily directed by means of the cock d<1> into the saturator b while the crys. tals of ammonium sulphate are being removed. The steam circulator k agitates the crystals in the bath during neutralization. The process is recommenced by running the contents of the saturator b into the primary saturator, making both baths up to the necessary strength with concentrated sulphuric acid admitted through pipes f, g, and opening valves d<1>, e<1>, In the Provisional Specification it is stated that the same object may be obtained by working two saturators having the necessary valves, alternately.
Patent GB-1015083-A (GB)
Title: Improvements in disc brakes
IPC: F16D55/224
Filed: 1963-06-27
Abstract: 1,015,083. Making disc brakes; upsetting. D.B.A. S.A. June 27, 1963 [June 29, 1962; Oct. 25, 1962], No. 25653/63. Headings B3A and B3H. [Also in Division F2] A disc brake bracket 12, Fig. 1 (not shown), is formed by shearing and folding, or stamping, two sheet-metal blanks to form two limbs or halves 18, 20, reinforcing plates 32 are secured thereto by spot welding and nuts 28 are pressfitted into holes in one of the limbs. The axially turned ends of the two limbs are then secured together by edge-to-edge welding, a thin metal strip being positioned thereunder to prevent the welding material from dripping out. Instead of the reinforcing plates the edges of the limbs may be reinforced by crushing lugs 40 on the limbs by a tool 42, the limb 18 and tool being connected across a high current source E to soften the metal of the lug during crushing.
Patent GB-338234-A (GB)
Title: Improvements in tamping and like machines
IPC: E01C19/34
Filed: 1929-08-23
Abstract: 338,234. Paterson, J. Aug. 23, 1929. Tamping-machines.-A punning, tamping, or like mechanism comprises a toggle on a carriage raised and lowered by a bell-crank mechanism, the toggle gear having a jaw which engages or releases the shaft of the punner &c. The machine shown comprises a wheeled frame D supporting on a pivot B a frame carrying at one end an engine for operating the machine, and, at the other end, a pnnner on a vertical shaft k<1>. The engine drives a crank disc b, which operates, by means of a connecting-rod c and bell-crank d, e, the link g of a toggle g, h. The link h is pivoted at i on a carriage i<1> movable on rollers j on T- section bars k on each side of the punner shaft k<1>, and operates a movable jaw m<1> which cooperates with a jaw.m fixed on the carriage i<1>, and grips the punner shaft k<1>. The carriage i' and the shaft k<1> are raised by the link g until the tail h<1> of the link h engages with a vertically-adjustable cross-bar n. This moves back the jaw m<1>, and releases the punner, which falls. To prevent the jaw m<1> from closing again, a spring latch p is pivoted to the carriage i<1> at p<2>; at the lower end of the stroke of the carriage i<1>, the latch is withdrawn from the jaw by a cam bar q with a cam surface engaging a roller p<@> on the latch q. The bar q at its lower end engages with an L-shaped slot r, and may be moved in it so as to prevent the bar q from engaging with the jaw m<1>. This displacement of the bar q may be effected automatically by the punner, when it is desired to hold the punner raised with the engine running, by fitting in the path of the punner a lever t pivoted at t<1> and serving, when the punner strikes a projection t<2>, to raise the end of the cam bar q, which is then moved in the slot r by a spring u. The punner is raised to a level determined by the lever t by means of a cord v passing round a spring roller w fitted with a ratchet w<1> and pawl x. Normally the roller w rotates as the punner rises and falls, the pawl x being held back. When it is desired to raise the punner out of the trench the pawl is engaged with the ratchet, and on each stroke, as the punner is raised, it is held until it abuts against the lever t, when the carriage i<1> rises and falls as before; but the cam bar q being displaced, the jaw m<1> does not engage the punner shaft.
Patent GB-297321-A (GB)
IPC: A24B3/06
Filed: 1928-09-07
Abstract: 297,321. United Cigarette Machine Co. Akt.-Ges. Sept. 17, 1927, [Convention date]. Addition to 292,091. Tobacco.-In a device for loosening tobacco and freeing it from dust in a pneumatic conveyer, the conveyer conduit a is provided with air admission ports b causing the whirling upwards of the tobacco passing over them. As shown, the ports are in the lower wall of the conduit and may be fitted with funnels c or with screens to prevent tobacco falling out, or with cups d for receiving sand, small stones, &c., falling through the ports. In other forms, the ports are arranged in the side walls or in staggered or helical arrangement. The device may be used for loosening bundles of tobacco leaves.
Patent GB-586544-A (GB)
Title: Manufacture of cyano sulphones
IPC: C07C317/14
Filed: 1944-12-22
Abstract: A cyanosulphone of the formula CN-C6H4-SO2-R is prepared by condensing a cyanobenzene sulphinic acid or a salt thereof with alkyl, substituted alkyl, aralkyl, substituted aralkyl or substituted aryl halide.  The condensation may take place in aqueous or alcoholic medium and in the presence of copper powder.  In the examples: (1) potassium-p-cyanobenzene sulphinate with copper powder and amyl alcohol is reacted with (a) chloroacetonitrile giving p-cyanobenzene sulphonyl acetonitrile; (b) ethyl chloroacetate giving ethyl p-cyanobenzene sulphonyl acetate; (c) phenacyl bromide giving p-cyanophenyl phenacyl sulphone; (d) p-nitrobenzyl bromide giving p-cyanophenyl p-nitrobenzyl sulphone; (e) cetyliodide giving cetyl p-cyanophenyl sulphone; (f) 2 : 4-dinitrochloro benzene giving 4-cyano-21 : 41-dinitrodiphenyl sulphone.  (2) Potassium p-cyanobenzene sulphinate and chloroacetic acid are reacted in the presence of dilute sodium hydroxide giving p - cyanophenyl methyl sulphone. Further specified starting materials include p-cyanobenzyl chloride, p-amino benzyl chloride, p-nitrobenzyl chloride or bromide, p-cyanochlorobenzene, 2 : 4 : 6-tri-nitrochlorobenzene, p-nitrochlorbenzene, methyl iodide, ethyl and propyl bromides, bromacetic acid, aralkyl chlor-, brom-and iodoacetates, chlor- and bromacetamides, a - and b -chlorpropionic acid, a - and b -chlorpropionitriles, a -, b - and g -chlorbutyric acids and their esters, o -bromundecanoic acid and o -bromundecanonitrile.
Patent GB-1353354-A (GB)
Title: Elongated porous objects
IPC: D06M15/00
Filed: 1971-04-19
Abstract: 1353354 Writing tips GILLETTE CO 19 April 1971 [9 April 1970] 25944/71 Heading A4K [Also in Divisions B5 and D1] A porous rod comprising a plurality of strands of yarn of synthetic filamentary material arranged to provide longitudinally extending channels between the strands is manufactured by drawing a bundle 8 of strands of yarn through a heat setting zone 9 which establishes the diameter of the rod, and passing the heat set bundle through successive impregnation zones 14, 14' and 14" each containing a resin solution, the concentration of the resin solution in zone 14" being lower than that in zone 14' which is lower than that in zone 14. After each impregnation, the bundle is passed through solvent removal zones 18, 18', 18" and curing ovens 25, 25', 25". Curing need only be carried out to completion in the oven following the final impregnation. Examples of yarns, resins and solvents for resins are listed in the Specification. Reference has been directed by the Comptroller to Specification 1195105.
Patent GB-840852-A (GB)
Title: A hydraulic control for controlling the platform and other mechanisms of a combine harvester
IPC: A01D41/14
Filed: 1956-08-24
Abstract: 840,852. Combine-harvesters. AGROSTROJ PROSTEJOV, NARODNI PODNIK, VRANA, V., GADOREK, L., FILOUS, F., and NOR, Z. Aug. 24, 1956 [Aug. 27, 1955(2)], No. 25983/56. Class 6(3). In a combine-harvester wherein the position of various parts such as the reel and the platform are controlled hydraulically, a single pump delivers fluid to a slide-valve which controls the platform-raising mechanism directly and through which the fluid flows freely to slide-valves controlling the other mechanisms the arrangement being that when the platform is being raised the fluid-flow to the other mechanisms is interrupted. Pivoted on the sides of the platform are dividers 3 connected by rods 4 and turnbuckles 5 to slotted links 6 slidable in a bracket 8 and biased rearwardly by springs 10. A pin 12 carried by a lever 13 is received in slots 11 in the links 6, the other end of the lever actuating a slide-valve 17. The valve 17 has an inlet 18 and an outlet 26 leading to a distributor 20 feeding the slide-valves 21, 22, 23 for the other mechanisms. The valve 17 also has an outlet 27 leading to the lifting cylinder of the platform and an outlet 28 leading to a fluid reservoir. When the slide 16 is in the position shown the outlet 27 is blocked and the fluid flows freely through the outlet 26 to the slide-valves 21, 22, 23. When the slide is moved to the left, the passage 26 is closed and oil flows into a hollow space 29, within the slide, through a port 30. Sufficient increase of pressure in the space 29 causes a spring-urged valve 32 to open, thus allowing oil to escape through the outlet 27 and thereby lift the platform. Once the platform has risen the slide moves to the right thereby opening the circuit 18-26 and closing the outlet 27. Further movement of the slide 16 to the right enables the fluid from the platform-lifting mechanism to return through the outlet 27, the space 29 and valve 32 to the outlet 28, thus lowering the platform. The slide 16 is moved by the dividers 3 through the lever 13, the slot 11 permitting some lost-motion.
Patent GB-1436263-A (GB)
Title: Microcalorimeter
IPC: G01N25/00
Filed: 1973-05-31
Abstract: 1436263 Thermocalorimeter UNIVERSITE DE SHERBROOKE 31 May 1973 [1 June 1972] 26057/73 Headings G1D and G1N The thermal properties of the mixing product AB of two liquid reactants A, B are obtained by separately conducting a first and a second reactant at constant combined volume flow and equal input temperature through a heat exchanger 90, the reactants being mixed and the temperature of the mixture product being detected, the mixture product AB being conducted through the heat exchanger 90 in winter-current to the reactants and the equilibrium temperature being recorded. The thermal detector for carrying out this method may have reactant and mixture ducts 11, 21, 31 of thin stainless steel tubing which are  twisted together longitudinally and silver soldered together in the heat exchanger. A microcalorimeter incorporates such a detector, i.e. apparatus shown in solid lines in Fig. 1, in combination with an evacuated housing 80 for thermally insulating ducts 11, 21, 31 from the environment, and means 70 for equalizing and preferably keeping constant the temperature of the reactants A, B upstream of heat exchanger 90. A differential calorimeter comprises an observation cell and a reference cell consisting of substantially identical thermal detectors, together with a common evacuable housing, and means for equalizing the temperatures of all the liquids upstream of the heat exchangers. The outlet end of the mixture duct of the observation cell is connected to the inlet ends of the reaction ducts of the reference cell, the required thermal detection may be accomplished by connecting the respective temperature sensing means 50 in a bridge circuit to provide a signal proportional to the temperature difference, means 50 each being a thermistor or thermocouple. Alternatively, electrically energized heat generating means may be provided for heating the mixing regions of the cells. The temperature sensing means 50 are connected together with the heat generating means in a thermal feedback circuit, heat being applied to one or other of the mixing regions depending on whether the mixing reaction generates or absorbs heat, so as to equalize their temperatures and the electrical energy so used is measured to gain the desired thermal measurement.