baber/WOPTO huggingface dataset:
Patent GB-694900-A (GB)
Title: Improvements in and relating to conveyors
IPC: F26B15/14
Filed: 1951-03-29
Abstract: 694,900. Endless conveyers. AEREX, Ltd., and BAIRD, J. Q. March 31, 1952. [March 29, 1951] No. 7285/51. Class 78 (i). A conveyer, particularly for carrying granular material in or through a drying chamber. comprises overlapping trays d pivotally mounted by trunnions e between a pair of endless chains c passing round sprockets b<SP>1</SP>, b<SP>2</SP>, the trays being supported by tracks g<SP>1</SP>, g<SP>2</SP> which terminate short of the sprockets in the direction of movement. On arriving at the end of the rails g<SP>1</SP>, the trays after tilting downwards discharge their contents on to the lower run of the conveyer and then encounter the periphery of a narrow pulley drum h<SP>1</SP> on the shaft a<SP>1</SP>. They assume a position tangential to this pulley and are then carried around to the rails g<SP>2</SP> along which they are traversed with their leading edges underneath the trailing edges of preceding trays. At the end of these rails, each tray is tipped by an arm i on a bracket secured to the tray engaging the vertical flange of an angle bar j. The trays subsequently encounter a drum h<SP>2</SP> on the shaft a<SP>2</SP> by which they are guided to the rails g<SP>1</SP>. An abutment similar to the bar may be arranged above the upper run so as to encounter the arms i and tilt the trays.
Patent GB-844638-A (GB)
Title: Use of low boiling diluent in hydrolysis of aluminum alcoholate
Inventor: KIRSHENBAUM ISIDOR
IPC: C07C29/54
Filed: 1958-03-07
Abstract: An olefin having 2-4 carbon atoms is reacted with an alkyl aluminium hydride or aluminium trialkyl in which the alkyl groups have 2-8 carbon atoms, the so-formed trialkyl is oxidised to an aluminium alcoholate and the alcoholate is hydrolysed in the presence of 10-90% of the total volume of diethyl ether, ethylpropyl ether or diisopropyl ether or a C5 hydrocarbon whereby the alcohol may be readily recovered.  Specified hydrocarbons are n-pentane, isopentane and pentenes.  The hydrolysis may be performed by means of water (or steam), aqueous ammonia or an aqueous organic or inorganic acid; in Examples ammonia is used. The alcoholates prior to hydrolysis generally contain alkoxy groups having 2-20 carbon atoms and preferably contain at least 5 weight per cent of C2-C4 alkoxy alcoholates.  In examples, the higher aluminium alkyl was prepared by reacting aluminium tri-n-butyl in the presence of aluminium diethyl chloride with ethylene at 115 DEG C. and 1500 p.s.i.g. for 250 minutes, the product was diluted with n-heptane and oxidised with air at 95 DEG C. and atmospheric pressure; the heptane and by-product olefins were removed by distillation, diethyl ether (or n-pentane) was added and the mixture hydrolysed with aqueous ammonia; the mixture was aged and the resulting aqueous and organic layers separated.  The organic phase was distilled to recover ether and the remaining organic phase was fractionated into the corresponding alcohols. In comparative examples describing only a fractionation, mixtures of ethanol, n-butanol, n-hexanol and either ether or n-hexane were fractionated: azeotroping took place between ethanol and n-hexane when the latter was used.  If pentane is employed, azeotroping with ethanol is much less.  Specifications 667,145 and 844,637 are referred to.ALSO:Aluminium alcoholates are hydrolysed in the presence of 10-90% of the total volume of diethyl ether, ethylpropyl ether, diisopropyl ether or a C5 hydrocarbon as a solvent, the so-formed alcohols are recovered, preferably the alumina is then aged to the b -form and calcined to the c -form; said alcoholates having been prepared by reacting an olefin with an aluminium trialkyl or an alkyl aluminium hydride, and oxidising the so-formed higher molecular weight aluminium trialkyl.  Specified C5 hydrocarbons are n-pentane, iso-pentane and pentenes.  The hydrolysis may be performed by means of water (or steam), aqueous ammonia or an aqueous organic or inorganic acid.  In examples, ammonia is used. Specifications 667,145 and 844,637 are referred to.
Patent GB-341330-A (GB)
Title: Improvements in traverse mechanisms for the thread guides of artificial silk spinning machines
IPC: B65H54/32
Filed: 1930-03-07
Abstract: 341,330. Winding artificial silk. HAMEL AKT.-GES., C. and HAMEL, E.. Sch÷nau, near Chemnitz, Germany. March 7, 1930, No. 7511. [Class 120 (ii).] A traverse mechanism for the winding- apparatus of artificial silk spinning machines, particularly of the type having two traverse cam-drums, comprises a forked lever w actuating the traverse rail x, and a lever m driven by a cam b and carrying a roller o<1> which engages the fork v of the lever w, and which is adjustable by a screw spindle p with a hand-wheel r operable to vary the traverse while the machine is in action. The roller o<1> is carried by a slide o in a guide-way on the lever m in which the slide o is clamped by a wedge controlled by a screw spindle s held in a bracket on the lever m and operated by a wing nut t. The cam b is fast on its shaft g and is driven by gears e, e<1>, the second cam c being driven by gears f, f<1> which may differ from gears e, el in ratio and being rotated on the shaft g, which it reciprocates by reason of a roller h with a stationary support k. The mechanism, excepting the wheel r and the wing nut t, is enclosed in a case a.
Patent GB-495363-A (GB)
Title: Improvements in variable speed transmission mechanisms
IPC: F16H9/16
Filed: 1938-03-11
Abstract: 495,363. Expanding - pulley gearing. CONTINENTAL MACHINE SPECIALTIES, Inc. March 11, 1938, No. 7651. Convention date, May 17, 1937. [Class 80 (ii)] A variable - speed transmission mechanism comprises a laterally spaced parallel pair of multiple flange pulley units coupled together by a belt running in V-shaped grooves in the units, each unit consisting of an axially spaced pair of inner and outer cone-faced pulley flanges, rotatably mounted and maintained in fixed axially spaced relationship, and at least one intermediate double cone-faced pulley flange rotatably mounted and slidable axially between the inner and outer flanges to form a plurality of axially spaced V-shaped pulley grooves of variable diameter. The units A, B are mounted on spindles 26 at the ends of a rocking control arm 13 adjusted by a ratchet lever 21 and in each unit inner and outer pulley flanges 27, 28 are secured to a sleeve rotatable and axially slidable on the spindle 26. Opposed faces of the flanges 27, 28 are cut away to form teeth 32 which engage corresponding teeth on an intermediate double coned pulley flange 29 slidable on the sleeve carrying the flanges 27, 28. A belt 42 couples the variable pulleys formed by the flanges 28, 29 in each unit and the variable pulleys formed by the flanges 27, 29 are coupled by belts 41, 43 respectively to driving and driven pulley 8, 10. The axial freedom of the units on the spindles 26 ensures the proper alignment of the various belts. The units are so mounted in relation to the driving and driven members that when the sliding flanges 29 are midway between the fixed outer flanges 27, 28, a line e ... e joining the axes of the units is at right-angles to lines a, b joining the axes of the driving and driven pulleys with the axes of the corresponding units, these lines being parallel to one another.
Patent GB-609754-A (GB)
Title: Collapsible salvage pontoon
IPC: B63C7/12
Filed: 1946-03-12
Abstract: 609,754. Salvage pontoons. COOK, J. A. March 12, 1946, No. 7712. [Class 68 (ii)] A salvage pontoon has a collapsable outer cage 2 enclosing a flexible collapsable inflatable gas-tight bag 1 which has at least one opening 3 enclosed by a circular plate 5 which has an annular flange 6 at the edges, and means to secure the edges of the bag around the opening to the flange 6 with the plate 5 positioned within the bag. The bag 1 may be of woven cloth treated with rubber, and at the opening 3 is wrapped round a ring 4 which is clamped to the curved flange 6 by segments 8 and bolts 9. The cage is preferably of woven or interlaced wires or cables which diagonally cross each other, and extends near the opening over a ring 12 which is held in place by segments 10 screwed to the segments 8. Cables 14 looped over the ring 12 are gathered at the saddle 15 which is used to attach the pontoon. The member 16 closes an aperture in the plate 5 and may carry a valved inlet 18, a valved discharge conduit 20, and an adjustable relief valve 21, and these may be protected by a closure 25 with parts 26. The cage may be secured to the bag at its maximum diameter by bands of canvas.
Patent GB-453512-A (GB)
Title: Improvements in or relating to submarine pressure-wave transmitting and receiving apparatus
IPC: G01S1/72
Filed: 1935-03-12
Abstract: 453,512. Audible and like signalling apparatus. MARCONI INTERNATIONAL MARINE COMMUNICATION CO., Ltd., Electra House, Victoria Embankment, and HINTON, N. P., 57, Broughton Avenue, Finchley, both in London. March 12, 1935, No. 7719. [Class 118 (ii)] In a system using the same instrument for transmission and reception, the transmission resonant generating circuit includes a spark gap which breaks down under the transmission pulses and short-circuits a resonant receiving circuit connected in parallel with the spark-gap. As shown in the Figure, the transmitting circuit of the quartz instrument Q includes inductance L1, the resistance component of which is shown separately as R1, and spark gap G1, whilst the receiving resonant circuit feeding valve V1 is bridged across sparkgap G1. The spark-gap breaks down on the transmission pulses but allows received signals to pass to the amplifier VI. Circuits for use when the instrument is remotely situated and in which the instrument is of the magnetostrictive type are given in the Specification together with suitable values for the components. Specifications 402,828, 402,829, and 411,903 are referred to.
Patent GB-1503592-A (GB)
Title: Method of and means for feed-back-connected control of a tractor connected to a working implement
IPC: F15B21/08
Filed: 1975-02-25
Abstract: 1503592 Tractor power lift mechanisms VALMET OY 25 Feb 1975 [27 Feb 1974] 7726/75 Heading A1P [Also in Divisions B7 and G3] A method of feed - back - connected control of a tractor connected to a working implement P comprises the following steps: (a) obtaining implement performance-dependent signals PDS related to at least one variable in the working implement performance, (b) supplying a power control of the tractor engine E with the said implement performance-dependent signals PDS to keep the engine power output matched to the requirements of the implements, (c) obtaining engine-related signals ERS related to at least one variable in the tractor engine functioning and using these engine-related signals to obtain derived signals PEDS, (d) obtaining tractor-dependent signals TDS dependent upon at least one variable in the tractor functioning, (e) supplying an adder A with the tractordependent signals TDS and with the derived signals PEDS derived from the enginerelated signals ERS, (f) supplying the said adder A with control signals MS from an electronic circuit 11 which has a non-linear characteristic including a set point valve -h and a dead range, which receives input signals IS from a differentiator D dependent upon a transducer 1a or lb and a manual control 10a or 10b, and which generates said control signals MS if said input signals IS are below said set point value -h or above said dead range, and (g) passing any corrective signals CS generated by said adder A to a governor 5 which governs a hydraulic valve control arrangement 17 controlling a hydraulic power-lift cylinder 21 for shifting the tractor hydraulic power-lift arms and the working implement so as to change the working implement performance until the said input signals are within the said dead range and the electronic circuit 11 ceases to send control signals MS to said adder A. In the method particularly described, the working implement P is a plough. The working implement performance-dependent signals PDS are related to plough depth or ground resistance. The tractor-dependent signals TDS are related to slippage of the tractors wheels. The manual controls 10a and 10b respectively set the desired plough depth and the desired pressure in the powerlift cylinder 21. The method may comprise the additional step of utilising a controller 15 to lock the tractors differential gear when the tractor wheel-slip exceeds a predetermined level. In modifications of the method particularly described, the working implement may be a harvester, peat-miller, or street-sweeper.
Patent GB-272621-A (GB)
Title: Improvements in lighting means for bicycles, tricycles and the like
IPC: B60Q1/068
Filed: 1926-03-20
Abstract: 272,621. Bright, A. H. March 20, 1926. Road-traffic signals on vehicles.-A vehicle lamp for cycles and the like movable to an "outvehicle" position to show a red light to the rear and if desired, an indicator, is mounted on a pair of rods d telescoping in a pair of tubular members c carried by brackets from the handle bar. An indicator f may be carried by an arm g pivoted to a plate slidably' mounted on the rods d.
Patent GB-661984-A (GB)
Title: Improvements in methods and means for accurately setting cutters in boring bars
IPC: B23Q17/22
Filed: 1949-03-22
Abstract: 661,984. Cutter-bars. NEWTON, D., and MIDLAND BANK EXECUTOR & TRUSTEE CO., Ltd., [Representatives of NEWTON, R.]. Jan. 27, 1950 [March 22, 1949], No. 7755/49. Class 83 (iii). [Also in Group XIX] A micrometer gauge, Fig. 2, for measuring the effective length of a cutter 1 to be set in a boring-bar 3, Fig. 5, comprises an anvil 17 having a part-cylindrical surface 18 which corresponds to the surface of the boring bar and has its axis arranged at right-angles to the axis of a micrometer spindle 10, and a cradle 12 to support the cutter rotatably between the surface 18 and the end of the spindle. The cutter is adapted to be located over the pivot of the cradle 12 in a bracket 11 and between lugs 13 on the cradle by a screw 14 and packing pieces 16. An adjusting screw 8 in the back of the cutter engages the surface 18 to expand the cutter into co-operation with the micrometer spindle 10. The micrometer head 9 may be interchangeable with frames 11 for different sizes of bars 3 and may be so graduated as to give a direct reading of cutting diameter for a particular bar. Upon removal from the micrometer gauge, the cutter is set in the bar with the assistance of a locating piece 19, Fig. 5, which can be fastened temporarily about the bar by spring clips 21, the screw 8 being brought into engagement with the locating piece and the cutter secured in this position by a screw 5.
Patent GB-489397-A (GB)
Title: Improvements in driving mechanism for cycles and like vehicles
IPC: B62M9/00
Filed: 1937-03-17
Abstract: 489,397. Cycle &c. driving-mechanism. MUIR, S. G. March 17, 1937, No. 7834. [Class 136 (ii)] In driving-mechanism for bicycles, tricycles, &c. comprising separate power-transmission means operable simultaneously to transmit the drive from both ends of the crank spindle to the hub or axle of the road wheel or wheels, a driving chain-wheel or gear-wheel and a separate crank are fixed to each end of a common spindle in the bottom bracket of the cycle frame. As shown, a crank 8 and a chainwheel 10 are fixed to each end of the crank spindle 1, and the chain-wheels 10 drive sprockets 14 at each side of the wheel hub through separate chains 15. In order to equalize the tensions of the two chains, one or both may be fitted with a spring-controlled jockey sprocket or roller. Alternatively, spring or other resilient means may be interposed between the two transmissions, or the chain or gear-wheels of the transmissions may be adjustably mounted. The transmissions may consist of longitudinal shafts and bevel, worm, or skew gears.
Patent GB-1192191-A (GB)
Title: Improved Obliteration System
Inventor: GOLDSTONE SUE
IPC: B41J29/36
Filed: 1967-02-18
Abstract: 1,192,191. Obliterating typing errors. CAMBRIDGE CONSULTANTS Ltd. 20 May, 1968 [18 Feb., 1967], No. 7868/67. Heading B6F. A typewriter has integral means to cover wrongly typed letter by powder or paint of a colour similar to the paper being typed upon. The paint &c. may be sprayed directly on to the paper or on to the type itself which is operated a second time to over-print the error before retyping. The paint may be applied by roller and a second roller may automatically clean the type after the paint has been applied. The type may also be cleaned on the return stroke by a plunger.
Patent GB-120346-A (GB)
Title: Method of and Dies for Reforming Reamers.
Inventor: VERCOMBE HARLEY HARRISON LA
IPC: B23D77/00
Filed: 1918-05-11
Abstract: 120,346. La Vercombe, H. H. May 11, 1918. Boring-cutters.-The teeth 14 of reamers are lengthened after wear by compressing hot between dies or rolls 12, 13 and are subsequently re-ground.
Patent GB-548411-A (GB)
Title: Improvements in or relating to photographic materials
IPC: G03C1/76
Filed: 1941-06-25
Abstract: 548,411. Resins. CHALLIS, K. J. June 25, 1941, No. 7961. [Class 95] [Also in Group XX] Photographic materials comprise one or more support layers, one or more photographic emulsion layers, and one or more layers which have a basis of a fraction of Yellow Gum Accroides which is soluble in aqueous sodium carbonate solution and which serve as anti-halation, filter, protective or stripping layers. The fraction may be isolated by direct extraction with aqueous sodium carbonate solution, but preferably by dissolving crude Yellow Gum Accroides in aqueous sodium hydroxide solution, acidifying, extracting the resultant precipitate with sodium carbonate solution, and again acidifying. A green or black antihalation dye is used with panchromatic emulsions, and a red or yellow dye is with orthochromatic and non-colour-sensitized emulsions. Naturally occurring pigments or triphenylmethane dyes e.g. Benzaurin, Acid Green G, Acid Magenta and Lissamine Green S.F. may be used. Mixtures of dyes or pigments may be employed. The Yellow Gum Accroides fraction, to which is added a dye, may be used as a filter layer in multilayer colour photographic material. When used as a stripping layer, stripping is effected with dilute sodium carbonate solution. High-boiling solvents and plasticizers may be added to the coating solutions. In an example, a solution of Acid Green G. and the sodiumcarbonate soluble fraction of Yellow Gum Accroides in a mixture of ethyl alcohol and ethylene glycol mono-ethyl ether is coated as an antihalation layer on the opposite side of a plate to a gelatino-silver-halide emulsion. The layer is readily soluble in standard alkaline developers. In another example, the emulsion side of paper coated with a non-colour-sensitized emulsion is coated with a filtered solution of the sodiumcarbonate-soluble fraction of Yellow Gum Accroides in alcohol and ethylene glycol monoethyl ether. In another example, an anti-halation layer is prepared from a solution comprising ethyl glycol, ethylene glycol mono-ethyl ether, the sodium carbonate soluble fraction of Yellow Gum Accroides, mixed resin acids from tall oil, and Acid Green G. Specifications 397,740, 450,220 and 540,382, [all in Group XX], are referred to.
Patent GB-1355145-A (GB)
Title: Metal derivatives of 3,5-di-t-butyl-4-hydroxyphenylpropionic acid
IPC: C07C59/52
Filed: 1972-02-21
Abstract: 1355145 Metal derivatives of 3,5-di-t-butyl-4- hydroxyphenylpropionic acid CIBA-GEIGY AG 21 Feb 1972 [25 Feb 1971] 7984/72 Heading C2C [Also in Divisions C3 and C5] Compounds of the formula  wherein M is aluminium, manganese, copper, zinc, lithium or tin and n is 1 to 3, the value of n being the same as the available valency of M are claimed per se. The compounds can be prepared by treating 3,5-di-t-butyl-4-hydroxyphenylpropionic acid with a reactive form of the metal or metal complex or by double decompositions in all cases except with lithium. These compounds may be used as stabilizers, in amounts from 0À005 to 5% by weight, for synthetic organic polymers.
Patent GB-1494792-A (GB)
Title: Method of driving matrix type liquid crystal display device
IPC: H04N5/66
Filed: 1975-02-26
Abstract: 1494792 Matrix displays HITACHI Ltd 26 Feb 1975 [1 March 1974] 8047/75 Heading G5C A grey scale image is produced on an X-Y coincidence addressed liquid crystal display device by using row and column voltages of the general form shown in Fig. 3, where a#3 and T w  is varied in accordance with the desired grey values. Each row in turn is selected using a voltage V x  with values V o  and zero in first and second halves of the row period, where Vo is sufficient to fully excite the liquid crystal. Non- selected rows have voltage 1/aV o  and (1-1/a)V o  applied at corresponding times. The voltage V Y  consists of levels zero and <SP>2</SP>/ a V o  in the first half row period and V o  and (1-<SP>2</SP>/ a )V o  in the second half period, the zero and V o  levels being applied for an interval T w . From the resultant potential difference V X -V Y  it can be seen that the voltage across any non-selected point has an average amplitude of <SP>1</SP>/ a V o  which is independent of T w  and insufficient to excite the liquid crystal, whereas the average voltage across each selected point is a function of T w , enabling control of the image intensity. The voltages V X  and V Y  may be provided by respective circuits (Fig. 5, not shown) in which clock pulses C and address pulses A determine which one of transistors Q 1 , Q 2  and Q 3  is turned on, or whether all are off. The pulses A are pulse width modulated for the output V Y .