baber/WOPTO huggingface dataset:
Patent GB-1212072-A (GB)
Title: Hydraulic control circuits
Inventor: PRESTON DAVID STANLEY
IPC: F15B11/02
Filed: 1968-02-14
Abstract: 1,212,072. Hydraulic motor control circuits. EATON VALE & TOWNE Inc. Feb.14, 1968 [Feb.23, 1967], No.7283/68. Heading F1P. In a hydraulic control circuit comprising a piston and cylinder 10, 12 e.g., a gravity-loaded jack of the movable cylinder type and a highpressure supply line 16 selectively connected through a control valve 32 either to a supply pump 26 or to a return reservoir 34, the supply line 16 includes a pilot-operated check valve 36 adjacent a cylinder port 14 and which closes when supply pressure is low and is held open by pilot pressure in a branch line 38 of supply line 16 whereof loss of pressure in line 16 results in closure of valve 36 and hydraulic locking of the piston and cylinder. Valve 32 in position a connects a pump delivery line 28 to the supply line 16 thereby raising the loaded cylinder 12 and fluid is exhausted through a port 18, a line 20, valve 32 and a line 50 leading to reservoir 34. Valve 32 in position c connects the pump delivery line 28 to a relief valve 22 in a branch 24 of line 20 and the so-reduced pressure in line 20 serves to lower the cylinder 12 whilst fluid is exhausted through port 14, valve 36, line 16 a needle valve 46, valve 32 and return line 50; the necessary pilot pressure in line 38 being provided by a second pump 40 which delivers through a line 42 and a non-return valve 44 to line 16 and hence to line 38.
Patent GB-296272-A (GB)
Title: Improvements in and relating to knotters
IPC: B65H69/04
Filed: 1928-03-09
Abstract: 296,272. Croad, A. K., (Mill Devices Co., Inc.). March 9, 1928. Knot-tying devices.-In a hand knotting device of the kind described in Specification 203,368 wherein two strands, one on each side of the rotary bill, are placed across twisters which rotate in opposite directions to cross the strands before the bill completes the knot, one of the twisters makes a double rotation to form an extra loop on one of the strands so that the knot, Fig. 17, will not slip when artificial silk or other very smooth strands are used. The strands A, B are placed in recesses 28, 29 of the twister 24, Fig. 5, and 31, 32 of the twister 27, Fig. 14. As the thumb-lever 19 is depressed, a slot 45 engages a pin 43 on a lever 41 causing the twister 24 to cross the strands. Simultaneously the pin 43 rocks the toothed quadrant 47, Fig. 9, rotating the twister 27 by means of a pinion through two turns, crossing the strands twice. The shoulder 22 on the thumb lever 19 then engages the twisted shank 14 of the bill and rotates it to form the knot, cutting the thread A by a movable jaw 17 operated by an enlarged base 18 working in the eccentric hole 18<a> of the plate 7. The thread B is cut by a blade 56, Figs. 10 and 14, operated by a lever 59 engaging a pin 57 and moved by a pin 62 on the thumb lever co-operating with arms 60, 61. The knot is stripped off the bill and pulled tight by a hooked arm 69 pivoted at 66 and operated by the part 21 of the thumb-lever engaging arms 67, 68. A stirrup 37 extends over the bill to prevent the strands from being placed in a wrong position across the device.
Patent GB-974088-A (GB)
Title: Improvements in or relating to methods of catching and collecting oil or other residues on the waters of ports,and elements for carrying out same
IPC: E02B15/06
Filed: 1961-02-28
Abstract: 974,088. Scavenging vessels. L. GALVAING. Feb. 28, 1961 [March 7, 1960], No. 7353/61. Heading B7A. [Also in Divisions A5 and E1] A vessel which is moored in a decantation vessel formed by an oil collecting barrage (see Division E1) comprises a raft 21 which supports an oil collecting funnel 28 and an outlet diffuser 23, 24, 25 for unballasting ships.
Patent GB-989192-A (GB)
Title: Production of water-soluble reactive dyes of the anthraquinone series
Inventor: WEISSAUER HERMANN
IPC: C09B62/004
Filed: 1962-02-26
Abstract: Water-soluble dyes of the formula <FORM:0989192/C4-C5/1> where Y is an acyl radical bearing at least one group capable of reacting with cellulose fibres to form a covalent bond and Z is a cation, are made by sulphonating the compound of the formula <FORM:0989192/C4-C5/2> or a salt thereof and acylating the product with an acylating agent bearing at least one group capable of reacting with cellulose.  The invention also comprises dyes of the first formula above wherein Y is an unsaturated six-membered ring containing two cyclic nitrogens and one to three halogens attached to nuclear carbon atoms or an aliphatic or aromatic acyl radical containing such a ring; a mono-halo-acetyl group; an aromatic acyl group substituted by a mono-halo-methyl group; a propionyl group having in b -position a hydroxyl group which may be etherified or esterified with sulphuric acid or a sulphonic acid group, a quaternary nitrogen atom, a thioether group or a sulphone group; one of the radicals <FORM:0989192/C4-C5/3> or an aromatic acyl radical containing the group -CH2NH-CH2-C­C-CH2-Cl, <FORM:0989192/C4-C5/4> an aromatic acyl radical containing attached via -SO2NH- a b -chloroethyl or g -chloropropyl group bound in b  position to the  nitrogen of the sulphonamide group; a vinylsulphonyl or substituted vinylsulphonyl group; or a group of the formula <FORM:0989192/C4-C5/5> where X1 is halogen, hydroxy, phenoxy or sulphate ester and X2 is halogen, hydroxy, amino, sulphate ester or an aliphatic or aromatic radical directly attached to the triazine ring or attached via an -NH-, -O- or -S-group.  Examples are given in which a variety of acyl radicals and acylating agents is specified. The dyes dye and print textile materials and sheets of cellulose and materials of polyvinyl alcohol, linear polyamides including silk and wool and leather and paper. Specifications 838,335 and 885,814 are referred to.
Patent GB-1466342-A (GB)
Title: Anisotropic wrought two-phase metal material
IPC: C22C5/06
Filed: 1974-02-18
Abstract: 1466342 Altering physical properties of wire, strip &c. BRUNSWICK CORP 18 Feb 1974 [21 Feb 1973] 7359/74 Headings B3A and B3V The torsional strength of metal wire, rod, strip, tube, I-section &c. is increased by a cold reduction operation combined with a twisting operation, substantially all twisting taking place within the reducing portion of a die. An anistropic two-phase metal is used in which at least 15% of the harder phase is present and the metal has a uniformly fiberized structure produced in at least one of the phases by cold working, heat treatment or controlled directional solidification which may be adapted to produce a helical fiberized structure. Suitable metals are beta titanium, beta zirconium, 18-8 stainless steel, gamma uranium, medium and high carbon steel, silver-copper alloys, silver-nickel alloys and aluminium-beryllium alloys. Two compositions of 18-8 stainless steel and one of high carbon steel are given in the Specification. In the example, wire 40 on reel 54 is drawn through a die 70 on to a take-up reel 84. The reel 54 is mounted in a yoke 52 which is rotated by a variable-speed motor 50 so that the wire is twisted in the reduction zone of the die, Fig. 2 (not shown). An adjustable clutch 62 provides back-tension, and twist is arrested by spring-pressed rolls 82. Reduction in the die may be from ¢ to 25% or 30% in one or more passes, preferably of 10-20% per pass. Twist angles range from 5 to 60 degrees. An 18-8 stainless steel may be cold worked, twist drawn and possibly further reduced by 5-10% to improve fatigue life and fracture strength. The torsioned yield strength of wires was up to 50% greater in the directional of pre-staining than in the opposite direction, and in the examples the volume of martensite exceeded 50%.
Patent GB-370991-A (GB)
Title: Improvements in lawn mower cutter driving gear
IPC: A01D34/62
Filed: 1931-01-03
Abstract: 370,991. Lawn-mowers ; clutches &c. JERRAM, A. E., Inglenook, The Oval, Oadby, near Leicester. Jan. 3, 1931, No. 7384/32. Divided on 370,485. [Class 6 (ii).] In lawn-mowers, a rotary cutter C is driven from a back roller A by gear comprising a driving gear A<2> fixed to an extension of the axle A<1> of the roller A and meshing with a pinion E, and a gear pinion G fixed to the rotary cutter spindle and meshing with a large gear F mounted on an extension E<1> of the pinion E. This extension and the gear F are connected to rotate together when the pinion E is rotating in one direction, but are free when the pinion rotates in the other direction. This free-wheel device comprises rollers H and co-operating faces F<1> in recesses in the gear F. Springs H<1> in guide holes H2 in soft metal plugs H<3> urge the rollers into contact with the faces Fl. The rollers lock between the faces F<1> and the extension E<1> to give a driving connection in one direction.
Patent GB-1304431-A (GB)
IPC: H01C10/32
Filed: 1970-02-17
Abstract: 1304431 Variable resistors NIPPON KOGAKU KK 17 Feb 1970 [19 Feb 1969(2)] 7543/70 Headings H1N and HIS A variable resistor comprising a resilient contact member 2, 4 movable in a unidirectional curved path over a planar base disk 12 containing resistive elements 12b, 12e and biased, by means of the resilience of the contact wires 4 or an external spring member (16, Fig. 15, not shown), against a second smaller disk 13 which guides the path of the brush over the resistive elements and an adjustable arrangement 17, 19, 20 to provide a short circuit path outside the desired resistive range. In Fig. 2, the brush guide disk 13 (nylon with molybdenum dioxide) is positioned on the resistance disk using the marks 12 i , 12h (deposited with the resistive areas for accuracy) and leading edge 12c of the resistive area 12b for location, the edge 13c of the guide disk being adjusted to give the correct contact path for the contact wires 4 and then secured with adhesive via holes 13b. The metal support disc 11, terminal 18, and the short circuiting disks 20, 19, are added and held in place by the insulating collar 10. The tongue 18a of the metal ring 18 projects through the slot 13d making ajustable contact with the terminal resistance area 12f. Electrical contact between the base 11 and 19, 20 is effected by the area 11a. The short circuit discs are set at the required separation angle 0 (Fig. 4) and the assembled metal brush supporting disk arrangement 1, 2, 4, 17, fitted around the collar 10. The brush wires 4 which would naturally be at position 7 (Fig. 3) are pushed outwards by the guide disk edge to take up position 8 (Fig. 3) the sprung member 2a (Fig. 1) biasing the wires on the resistance track. The brush support member is rotated relative to the rest of the resistor by an external driving means (not shown). In operation within the resistance range, i.e. a rotation of # degrees between positions A and B (Fig. 4) the circuit is established by 1-2-4-12b-12f-18-20-11; the short circuit contact 17a being disconnected from 19 and 20 while when outside the required resistive range the contact 17a rides on 19 or 20 and short circuits the resistive circuit by a parallel circuit 1-17-19 or 20-11. The resistance element 12b is a tapered solid form and in continuation of its leading end 12c and upon a tap portion 12a is a second tapered resistive layer 12e which has a resistance per unit area higher than 12b. Further embodiments are described (Fig. 6-15, not shown) involving modified shorting circuits and double layer guide disks, a variable resistor assembly without the shorting and the external sprung contact member. The circumferencial shape of the guide disk may be altered to give a specific resistance path.
Patent GB-767380-A (GB)
Title: Improvements in or relating to sheet or the like clamping and releasing mechanism
IPC: G03B21/06
Filed: 1955-03-16
Abstract: 767,380. Optical-projection apparatus. KODAK, Ltd. March 16, 1955 [March 19, 1954], No. 7654/55. Class 97(1) A hollow cylinder is mounted for rotary and axial movement and is provided with a device extending radially into it, for clamping one edge of a sheet to the cylinder surface, the clamping engagement being maintained during rotation in one direction but released when the rotation is reversed. In the form shown the drum 14 is carried on a shaft 30 journalled in end supports forming part of a framework slidable axially on rods 16, 16<SP>1</SP>. A plate 47 is slidable across the end face 38 of the drum; being retained thereon by a tongue 57 which passes through slots in the end face and carries an enlarged portion 61 behind the end face. The upper end 62 is similarly engaged behind the end face and continues longitudinally within the drum being coupled by inter-engaging tongues. not shown, to a member 45 running the length of the drum, projecting through a longitudinal slot and turned over to form a lip at 46. The plate 47 and hence the member 45 is urged radially inwards by a spring - 48 anchored to the plate and encircling the shaft 30. The lip 46 is thus urged into contact with the surface of the drum 14 and may be used to clamp one edge of a sheet to be wrapped round the drum. The member 47 carries an upwardly bent tongue 67<SP>1</SP> which, once per revolution of the drum in a clockwise direction, rides over a spring tongue 72 carried by the end plate in which the shaft 30 is journalled. The two tongues have a ratchet-like relation so that if the drum rotation is reversed engagement thereof lifts the members 47 and 45 to permit the edge of a sheet to be inserted under or removed from under the lip 46. The upward movement is limited by tongues 51 projecting from the member 45. Fig. 1 shows the device in an optical projector. A sheet, on the drum 14 rotatable by knobs 32, is illuminated, at a projection gate, not shown, and an image thereof projected episcopically on to the screen 12. Rotatable balls 78 maintain close contact of the sheet, with the drum 14 in the vicinity of the projection aperture. Alternatively a pressure pad may be used.
Patent GB-785985-A (GB)
Title: Improvements in the carbonylation of olefinic compounds
IPC: C07C27/22
Filed: 1955-03-16
Abstract: Olefines are carbonylated by reacting an olefinic compound with hydrogen and carbon monoxide at elevated temperature and pressure using solid cobalt acetate as catalyst.  The preferred form of catalyst is cobalt acetate tetrahydrate.  The catalyst may be added in the form of a slurry in the olefin feed or in some of the reaction product or as a paste in hydrocarbon material such as liquid petrolatum or wax.  The cobalt-contaminated aldehydes produced may be passed to a catalyst-decomposition zone to be treated with dilute acetic acid; the aqueous cobalt acetate solution thus formed is evaporated to dryness and the cobalt acetate recovered may be passed back to the carbonylation zone. The aldehydes produced may be hydrogenated to form alcohols.  In the examples heptene is carbonylated.
Patent GB-1268021-A (GB)
Title: Aqueous developer solutions for use in connection with photopolymerisable elements and compositions
Inventor: LAM FRANK MAN-KAM
IPC: G03F7/32
Filed: 1970-02-18
Abstract: 1,268,021. Developers for photo-polymerizable materials. E. I. Du PONT DE NEMOURS & CO. Feb. 18, 1970 [Feb.24, 1969], No.7898/70. Heading G2C. An aqueous developer solution for exposed photo-polymerizable layers containing an ethylenically unsaturated monomer and a polymeric binder comprises at least 5 grams reckoned as anhydrous per litre of solution of a water-soluble silicate of lithium, potassium or sodium, the silica to metal oxide ratio being at least 1À5: 1, and from 2-25% by volume of solution of, as the only watermiscible organic solvent present, at least one aliphatic monohydric alcohol, ketone or ether containing a carbon chain of at most 4 carbon atoms in addition to any functional group, the pH of the solution being between 10 and 13. The organic solvent may be a 2-alkoxyethanol. The developer may also contain a wetting agent or a buffering agent and is preferably used to develop the photo-polymers of Specification 1, 135, 280.
Patent GB-268949-A (GB)
Title: Improvements in spinning, doubling, twisting and like machines used in the production of yarns or threads of fibrous substances
IPC: D01H13/04
Filed: 1926-03-23
Abstract: 268,949. Gaunt, W. C., and Gaskell, M. March 23, 1926. Roller heads; thread guides. - A yarn b, which, after passing through the front rollers 2, 3, is twisted with a previously spun or simultaneously spun yarn c by flyer, cap, or ring twisting- means so as to encircle it, is passed through a guide 4 mounted on a bar 5 reciprocated by cam means, so that it follows a sinuous path through the rollers 2, 3 and is of such length as to ensure a complete encircling of the yarn c as distinguished from a mere twisting together.
Patent GB-293084-A (GB)
Title: Improvements in the manufacture of and treatment of colloidal materials
IPC: B01J13/00
Filed: 1927-03-23
Abstract: 293,084. Riley & Sons, Ltd., J., Bentley, W. H., and Coates, W. M. March 23, 1927. Fungicides ; insecticides.-Colloidal fungicides and insecticides are produced by mixing in presence of a jelly-forming agent reagents which will produce the dispersed product, converting the mixture to a jelly, and removing the soluble salt. The salt may be removed by washing with water or by allowing the jelly to effloresce, and the jelly may be dissolved when required for use. In the examples colloidal sulphur is produced from sodium. potassium, or ammonium pentasulphide and sulphuric acid in presence of gelatine, and from calcium pentasulphide and hydrochloric acid in presence of gelatine; and lead arsenate is produced from lead nitrate, arsenic acid, and caustic soda in presence of glue; and it is stated that copper arsenite may be prepared from copper sulphate and sodium arsenite, and calcium arsenate from calcium chloride and sodium arsenate in a similar manner.
Patent GB-1515501-A (GB)
Title: Radio navigation with separate correlated scans to avoid reflection interference
IPC: B64C13/20
Filed: 1977-02-25
Abstract: 1515501 Radio navigation TULL AVIATION CORP 25 Feb 1977 [19 March 1976] 07995/77 Heading H4D Aircraft 1, 2 have their angular position relative to an axis 12 indicated by reception of a direction coded main scanning beam. Assuming presence of a reflecting obstruction 10 an auxiliary beam also direction coded, distinguishable from the main beam, is scanned through the sub-section 14 including the obstruction. The aircraft 1, 2 receive signals from the two beams enabling them to distinguish true signals 18, B from reflected signals 16. In a first arrangement, the main beam scans throughout the main sector A, thereby giving rise to true 18 and reflected 16 signals at aircraft 1 and attenuated true signal 22, C at aircraft 2. The auxiliary beam gives only a reflected signal 20, H at aircraft 1 and attenuated true signal 24,1 at aircraft 2. The combination of signals 16 and 20 on the same bearing from the main and auxiliary scans teaches aircraft I to ignore the bearing. In a second arrangement D the main beam is cut off in the subsector 14, giving only a true signal 18, E at aircraft 1 and no signal at aircraft 2, F.
Patent GB-588141-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J23/213
Filed: 1944-04-28
Abstract: 588,141. Electron discharge apparatus. RAYTHEON MANUFACTURING CO. April 28, 1944, No. 8057.. Convention date, March 6, 1942. [Class 39 (i)] In an electron discharge device comprising a sealed envelope containing an elongated cathode and an anode structure having adjacent anode arms defining at least one transverse cavity resonator, the free ends of the arms constituting electron-receiving portions, tuning is effected by adjustment towards or away from the resonator of a conductive member supported within the envelope adjacent the free ends of the anode arms. The magnetron shown comprises an anode block 1 in which are formed a number of resonance cavities 12 with radial passages separated by electron-receiving arms 13 and communicating with a central space surrounding an indirectly cathode 6. A tuning member 20 having a conductive lower face 21 is sealed to a corrugated diaphragm 26 also sealed to a cap 2 having a central aperture and is provided with a threaded extension 22 engaged by an internally-threaded disc 23 which extends slightly beyond the block 1 and the upper polepiece N and is knurled for operation by hand. The diaphragm 26 is biassed downwardly by the external atmospheric pressure which maintains a projection 24 on the disc 23 in abutment with a depression in the cap 2. Energy may be withdrawn from one of the cavities by a coupling loop and concentric line. The member 20 is provided with a slot for passage of the upper cathode lead 7.
Patent GB-357112-A (GB)
Title: Improved process for the production of spun thread from artificial silk obtained by the ammoniacal-copper, viscose, collodion or acetate process and which has a superior feel, a lustre capable of variation from richness to mattness and which redyes uniformly
IPC: D01F2/06
Filed: 1930-03-12
Abstract: The lustre of artificial silk obtained by the ammoniacal-copper, viscose, collodion, or acetate process is modified by adding to the initial material or to the "semiproducts," boron compounds, such as boric acid or borax, if necessary in combination with fats or free fatty acids, mono-or poly-hydric-alcohols, inversion sugar, organic polyhydroxy compounds, or alphatic, naphthene, or terpene hydrocarbons.  The silk so treated is stated to become elastic, and has a superior feel and more uniform-dyeing properties.
Patent GB-145865-A (GB)
Title: Improvements in or relating to alarm speed indicators
IPC: G01P3/16
Filed: 1919-03-31
Abstract: 145,865. Antoine, V. March 31, 1919. Centrifugal speed indicators; particularspeed alarms. -- The speed of centrifugal cream - separators is measured by means of a centrifugal governor having a sleeve which carries two cams with different numbers of projections, the cams being arranged so that at speeds below the normal -one of them operates the hammer of a gong, and at speeds above the normal the other operates the hammer and sounds the gong at a different frequency. As shown, a rotating shaft 1 carries pivoted arms 5 linked to a sleeve 8 and bearing weights 6. The sleeve 8 has a cam 9 comprising a single projection, and spaced from it a cam 10 comprising two projections. A lever 12, secured to a sleeve 14 rotatable on a pivot 13, projects between the cams when the speed is normal, but is engaged by one of them when the speed changes, and so causes a hammer 15 secured to the sleeve 14 to strike a gong 17.