baber/WOPTO huggingface dataset:
Patent GB-501103-A (GB)
Title: Improvements in and relating to photographic printing apparatus
IPC: G03B27/12
Filed: 1938-04-13
Abstract: 501,103. Photographic printing-apparatus. KLUITMANN, L. April 13, 1938, No. 11346. Convention date, April 20, 1937. [Class 98 (ii)] In multiple printing apparatus comprising a rotatable glass cylinder containing a light source and engaged at its periphery by an endless band, controllable grippers are provided on the cylinder to hold the copy tracing, and the printing papers pass between the band and the cylinder. As shown in Fig. 1, the cylinder 1 containing the light sources 6 is engaged by a band 2 to hold the papers 24, fed by a roller 26, in contact with the tracing held on the drum by grippers 17 on a shaft 16 pivoted to a longitudinal metal bar 15 on the cylinder. Screens 7, 8 are relatively adjustable to limit the exposure area, and act as reflectors. As shown in Fig, 4, the shaft 16 carries an arm 18 held by a spring 19 to close the grippers. Cams 20 pivoted to the frame of the apparatus are normally held out of engagement with the arm 18. When it is desired to change a tracing on the cylinder, a pivoted lever 31 is moved so that rollers 32, 33 thereon move the cams 20 so that they lie in the path of the arm 18. The lever first engages the lower cam 20 to release the tracing and allow it to be removed. The cylinder continues to rotate until the arm 18 strikes the second cam. 20 to open the grippers 17, which thereon engage a cap 23 on a pivoted feed table 21 containing the next tracing 22 and brought into position by a link 37 engaging the arm 31. On raising the cap, the tracing slides under gravity to engage the grippers which are closed on further rotation of the cylinder. On continued rotation a pin 36 on the cylinder engages the upper flexible end of the lever 31 to move it in a cam groove 35, Fig. 5, so that the cams 20 move to their inoperative position and the arm 31 is out of the path of the pin 36, so that printing, may proceed.
Patent GB-860182-A (GB)
Title: Improvements in or relating to hydraulic control installations
IPC: F15B11/08
Filed: 1957-04-09
Abstract: 860,182. Hydraulic control systems. MIPSA S. A. April 9, 1957 [April 11, 1956], No. 11516/57. Class 69 (2). An hydraulic system particularly for the control of a machine tool table comprises a control valve 3 having a central position in which a piston 49 is reciprocated under the control of an automatically actuated reversing valve 58 and two end positions in which the piston is given a forward or reverse stroke independently of the position of the reversing valve 58. As shown, the control valve 3 is urged to its central position by pistons 20, 21 in chambers 22, 23 supplied with liquid by a pump 16, and the piston is reciprocated by liquid supplied by a pump 56 through the reversing valve 58 which is actuated by dogs 60, 61 on the piston-rod. Pilot valves 32, 33 are urged upwardly by liquid supplied by the pump 16 to chambers 37, 38. Manual depression of the valve 32 or 33 opens a control valve chamber 40 or 42 to the supply line from pump 16 and the control valve 3 is moved to the right or to the left, thus interrupting communication between the reversing valve and the piston, and opening communication between the pump 16 and one side or the other of the piston and opening the other side of the piston to an exhaust line 43. When the pilot valve is released it is automatically moved to its upper position and the control valve is moved to its central position. The following modifications can be made:- (1) Pump 56 can be dispensed with and pump 16 can supply liquid to the reversing valve. (2) The pilot valves 32, 33 can be replaced by a single pilot valve. (3) The pilot valves may be omitted and a mechanical control member act directly on the control valve 3.
Patent GB-311910-A (GB)
Title: Improved gravity conveyor
IPC: B65G37/00
Filed: 1928-04-19
Abstract: 311,910. Blades, J. April 19, 1928. Roller-way conveyers.-In a gravity roller-way conveyer in which the rollers 1 are divided into separate groups A, B, C, &c. arranged end to end, each group is enclosed by an independent endless band 2 of substantially the width of the rollers. Each hand is tensioned by a jockey roller 8. The rollers 1<a> at each end of a group are fitted with a rubber sleeve 4 or are crowned.
Patent GB-1204063-A (GB)
Title: Improvements in and relating to sheet-feeding devices
IPC: B65H3/06
Filed: 1968-03-08
Abstract: 1,204,063. Separating sheets. MATH. BAUERLE G.m.b.H. 8 March, 1968 [20 March, 1967], No. 11571/68. Heading B8R. A sheet-feeding device, Fig. 1, comprises a rotatable shaft 1, a hollow rotary member 2 having a crescent-shaped cross-section and at least partially extending along the shaft, the outer surface of the member having a convex face 3 and a concave face 4, means for fastening the rotary member to the shaft, and a friction surface mounted on a portion of the convex face 3. The device may be used in an office duplicator (not shown) wherein the main drive is connected to shaft 1, each rotation of the shaft causing a sheet to be fed from the top of a stack, Fig. 2 (not shown). The member 2 is formed from a single piece of spring-tempered steel with its free ends 6 superimposed on a clip 7 which receives the shaft 1. At least one pin 13 passes through aligned openings in the ends 6 and the clip 7 into an axial groove 12 in the periphery of the shaft, thus enabling the member 2 to be moved along shaft 1 and allow for different sheet widths, or for the presence of further members 2. The friction surface comprises a pad 10 with corrugations 11. The member 2 has high rigidity in the circumferential direction; the ends 8, 9 of clip 7 can be forced apart when it is required to remove member 2 from the shaft 1.
Patent GB-328584-A (GB)
Title: Improvements in or relating to folding spectacles
IPC: G02C5/00
Filed: 1928-10-26
Abstract: 328,584. Wingate, G. H. Oct. 26, 1928. Divided on 322,297. Spectacles.-A pair of spectacles comprises a bridge 5, frames 1, 2 and sides 7 of practically normal appearance when open, and foldable so that the front of one frame lies close to and directly behind the other, and the foldable sides, each consisting of limbs 7<1>, 7" folded together, both lie against the back of the first-mentioned frame. The frames fold upon substantially parallel pivots 3, 4 and together with the sides may be folded into the position shown in Fig. 3. The hinge 12 of one side is in a different plane to that of the hinge 11 to facilitate folding, and the pivots 3, 4 pass through metal bushings in the frames 1, 2. Specification 322,297 is referred to.
Patent GB-822385-A (GB)
Title: Flushing cisterns
Inventor: COTTON WILLIAM HENRY
IPC: E03D1/012
Filed: 1957-04-10
Abstract: 822,385. Flushing cisterns. THOMPSON & CO. (MILLFIELDS) Ltd., S. April 10, 1958 [April 10, 1957], No. 11674/57. Class 26. A flushing cistern 3 of plastics material has a wellbottom in which there is a syphon type discharge device 6, i.e. a device comprising inlet and outlet tubes 4, 5 connected at their upper ends, and associated with a piston 8, 9 for driving water into the tube 5, the outlet tube 4 forming or being connected to the discharge pipe in the centre of the well. The piston is formed by a lifter plate 8 covered by a flexible disc 11 and rod 9 connected to an operating handle 10 for movement in a cylinder 7.
Patent GB-1249442-A (GB)
Title: Collector follower-type transistorized voltage regulator
IPC: G05F1/56
Filed: 1970-03-11
Abstract: 1,249,442. Automatic voltage control. HITACHI Ltd. March 11, 1970 [March 12, 1969], No.11740/70. Heading G3R. A D. C. voltage regulator of the type comprising a transistor Q1 connected between a power source 2 and a load 8 and controlled by a comparator circuit 1 through an amplifier transistor Q2, is provided with a resistor R5 having a postive temperature coefficient which supplies starting current to the transistor Q1 when a switch 4 is closed to produce an output voltage from the source 2 and which changes to its high resistance state when normal operation of the regulator is achieved, so that this operation is not affected by the resistor R5 and is obtained over substantially the whole range of load current, Fig. 2 (not shown).
Patent GB-754570-A (GB)
Title: Suspended rotatable clothes line
IPC: D06F57/12
Filed: 1954-04-23
Abstract: 754,570. Clothes airers. GRANTHAM, R. L. P. April 23, 1954 [July 31, 1953], No. 11741/54. Classes 52(3) and 52(5). A rotatable airer for clothes is suspended from an overhead support and includes a tension unit carrying the weight of the airer, lowering of the airer causing tensioning of a spring in the unit and raising of the airer releasing tension on the spring so that the airer can remain in any desired position. As shown, bearings 13, 14 secured to a tube 15 bear on the ends of a tube 12 to which mounting plates 10, 11 are secured. The tube 15 is slotted at 18 to receive a pin 20 projecting from a tube 19 to which line-supporting arms 26, 27 and supporting wires 24, 25 are secured. The tension unit comprises an inner tube 17 secured to the bearing 13 by a pin 16 and enclosing a spring one end of which is secured to the tube 17 and the other end to a spiral 21 projecting from the lower end of the tube 17 and secured to the tube 19 by a pin 22. When the airer is pulled down by the handle 22 the spiral is pulled out of the tube 17 and winds up the spring which unwinds to assist the raising of the airer, the starting inertia being sufficient to maintain the airer at any desired height. In a modification the end of the tube 17 is connected to the tube 19 and the spiral projects upwardly and is connected to the bearing 13.
Patent GB-732405-A (GB)
Title: Production of nitrohydrocarbons
Filed: 1953-04-28
Abstract: Mononitro substituted aliphatic and cycloaliphatic hydrocarbons are prepared by reacting an aliphatic or cycloaliphatic hydrocarbon with aluminium nitrate in the liquid phase at an elevated temperature, the hydrocarbon and nitrating medium being passed in counterflow through the reaction chamber. The reaction is preferably carried out at an elevated pressure. The reactants may be heated to the required reaction temperature before being passed into the reaction chamber. A suitable form of reaction chamber is a vertical pressure tube in which the nitrating medium is injected at or near the upper end and the hydrocarbon is injected at or near the lower end.  Excess heat from the reaction chamber may be absorbed by using more than the theoretical quantity of hydrocarbon, or by injecting a proportion of the cold hydrocarbon into the reaction chamber at various points. Suitable hydrocarbons referred to are propane, n-hexane, n-heptane, octane, dodecane, cyclohexene and methylcyclohexane. Unreacted aluminium nitrate containing basic aluminium compounds may be separated from the reaction products and treated with concentrated nitric acid to form aluminium nitrate suitable for the nitration step.  In the example cyclohexane is treated with aluminium nitrate to form nitrocyclohexane together with a small proportion of a dinitrocyclohexane.  The Specification refers also to the above process in which the reactants flow in the same direction.
Patent GB-1344923-A (GB)
Title: Foundations
IPC: E02D27/02
Filed: 1971-04-28
Abstract: 1344923 Foundations FRANKIPILE SOUTH AFRICA (PTY) Ltd and H REEDMAN 28 April 1971 [29 April 1970] 11783/71 Heading E1A A bulking foundation 1 is upwardly concave and its periphery at least partly supports a building structure via an intermediate element. The element is a deck 2 or an annulus (5). Trusses (8) may be provided and the foundation may be filled with rubble.
Patent GB-331607-A (GB)
Title: Improvements in or relating to means for grooving or scoring leather
IPC: A43D37/00
Filed: 1929-04-16
Abstract: 331,607. Radburne, J. W. April 16, 1929. Addition to 262,308. Milling - cutters, machines with. - In grooving leather for attachment by adhesive by means of tools described in the parent Specification, the workpiece is supported on an inclined table b with an aperture b<1> through which projects a revoluble wheel a. A continuous edged cutter f may be strung on the shaft d for trimming the margin of the workpiece. The teeth of the cutters c may be disposed helically.
Patent GB-351141-A (GB)
Title: Brake system for automotive vehicles
IPC: B60T13/48
Filed: 1930-04-14
Abstract: 351,141. Fluid-pressure brakes. BRAGG-KLIESRATH CORPORATION, 3901, Queens Boulevard, Long Island, U.S.A. April 14, 1930, No. 11809. Convention date, April 16, 1929. [Class 103 (i).] A brake system comprises a foot pedal connected to a valve controlling a brake cylinder and also connected directly to the brakes and means adapted to be initially adjusted whereby the physical force of the operator can be applied to the brakes independently or simultaneously with the force of the brake piston. The brake pedal 188, Fig. 3, is connected by a rod 187 and a lever 177 to brakes B on a tractor and also by a rod 20 to a valve V<1> controlling a brake cylinder P on a trailer, connected to the trailer brakes D. A spring 50 provides a resistance to the movement of the valve casing in order that the valves move relatively thereto to bring about operation of the brake piston and this spring may be adjusted so that the valve operates when the brake pedal is first moved or its tension may be relaxed so that the valve moves bodily for a certain distance while brakes B begin to operate, before the resistance of the spring is increased sufficiently to operate the valve or the tension may be so relaxed that the valve does not operate. The valve comprises a casing chamber 13 in which is connected to the single acting brake cylinder P by a pipe 14. Longitudinal movement of the rod 20 by the brake pedal closes a disc valve 10, Fig. 2, against a diaphragm 8 to close the brake cylinder from the atmospheric ports 18, 19 and raises the diaphragm from a seat 11 to connect the brake cylinder to the suction chamber 12 and a pipe 32 leading to the induction pipe of an internal-combustion engine. The valve casing is mounted in a pivoted yoke 30, having an adjustable stop 35, and the valve casing is connected to a fixed point by the spring 50 which is tensioned on valve operation but may be of the compression type. The partial vacuum introduced into the chamber 13 causes the diaphragm to reseat and maintain the brakes applied at a desired pressure and also produces a reactionary effect on the foot pedal. Brake application and release may thus be graduated. The cylinder may be connected to further actuators by a pipe 14b. A pull rod 180 within reach of the driver may be provided for adjusting the tension of the spring 50 and for temporarily increasing the tension of the spring to operate the valve. The rod is held in adjusted position by mutilated threads. In a modification all the brakes operate on the same vehicle.
Patent GB-1107322-A (GB)
Title: Improvements in and relating to doors, particularly doors for motorized artillery guns and similar vehicles
IPC: F41H5/22
Filed: 1965-03-19
Abstract: 1,107,322. Spring hinges; sliding bolts; multiple fastenings. BOFORS A.B. 19 March, 1965 [20 March, 1964], No. 11812/65. Headings E2A and E2F. The door 3, e.g. to the port of a military vehicle, is hinged to the, as shown, horizontal wall 1 surrounding the port by levers 4, 4'; 5, 5', the ends of the levers pivoted to the door each being secured to one end of a torsion rod 10, 10'; 11, 11', the other end of each torsion rod being secured to the door, as at 16, in bearing blocks 18, 18'; (19), 19'. In opening the door, the levers articulate through 180 until the door is again flush with the wall 1. The torsion rods are unstressed when the levers are vertical and bias the door towards this position when displaced, thus counteract ing the large weight of the door to ease open- and closing. As shown, all levers are of an equal length, but pair 4, 4' may be of different length to pair 5, 5' so that the door may be rotated as well as translated during opening so that the door may abut an inclined part of the wall when opened. The door may be provided with locking means (Figure 3) consisting of plates 22, 22' attached to levers 5, 5' and having apertures e.g. 20, 21; 20', 21' engageable by bolts 23, 23' by rotation of handle 25, when the door is in certain positions as defined by the apertures.
Patent GB-928305-A (GB)
Title: Anthraquinone dispersion dyestuffs and a process for their manufacture
IPC: C09B1/515
Filed: 1961-03-30
Abstract: The invention comprises dispersion dyes of the formula:- <FORM:0928305/IV(a)/1> or <FORM:0928305/IV(a)/2> where R is hydrogen or a methylol group, mixtures of these dyes with each other and/or with unreacted diamino-dihydroxy-anthraquinone used in the manufacture thereof, and aqueous dispersions of the above dyes and mixtures.  The dyes and mixtures are made by reacting 1 mol. of 4:8-diamino-1:5-dihydroxy-anthraquinone or 4:5-diamino-1:8-dihydroxy-anthraquinone or 1 mol. of a mixture of these two dyes dissolved in sulphuric acid with about 0,5 to 2 mols. of formaldehyde, if desired in the presence of phosphorus pentoxide, polyphosphoric acid or an aliphatic carboxylic acid amide or an N-monoalkyl derivative thereof, or a mixture of these compounds, in an amount of about 25 to 100% by weight calculated on the dye or dyes used and at a temperature from about -20 DEG  to 70 DEG C.  Examples are given.  The dyes dye polyamides, cellulose acetate, cellulose triacetate and polyethylene terephtha late in blue shades from aqueous dispersion.
Patent GB-679906-A (GB)
Title: Improvements in and relating to the purification of chromium, molybdenum and tungsten carbonyls
IPC: C01G41/00
Filed: 1951-05-22
Abstract: Tungsten, molybdenum and chromium carbonyls are purified by mixing the carbonyl with an aqueous solution of sodium, potassium or barium hydroxides and heating the mixture to distil the purified carbonyl, 1 to 20 per cent hydroxide solutions are employed and the examples refer to sodium hydroxide, employed in the purification of tungsten, carbonyl contaminated with iron impurity, both in the form of the crude reaction mixture and the impure carbonyl recovered by steam distillation of the reaction mixture.
Patent GB-1461813-A (GB)
Title: Circuit interrupter tripping device
IPC: H01H73/48
Filed: 1974-03-18
Abstract: 1461813 Circuit breaker tripping mechanisms WESTINGHOUSE ELECTRIC CORP 18 March 1974 [27 March 1973] 11962/74 Heading H1N A tripping mechanism for a circuit breaker has a pivoted trip bar 83 which is acted upon by both thermal and electromagnetic trip means, the two trip means engaging the bar 83 at points on opposite sides of its pivot axis. The armature 111 of the electromagnet acts on a point 103 and the bimetal acts on a pin 99. The circuitbreaker may be as in Specifications 1,461,491 and 1,461,814.
Patent GB-1431546-A (GB)
Title: Protection method
IPC: C09K17/00
Filed: 1974-03-19
Abstract: 1431546 Coating BRITISH PETROLEUM CO LTD 3 Dec 1974 [12 Dec 1973 19 March 1974] 57472/73 and 12049/74 Heading B2E A ground surface is treated to render it impervious by covering with a flexible sheet mesh structure, spraying glass-fibre reinforcement and unsaturated polyester resin on to the sheet mesh structure and causing the resin to cure around the sheet mesh structure thereby to form a glass fibre reinforced polyester resin sheet. Suitable unsaturated polyesters are specified and they may be cured in the presence of other ethylenically unsaturated comonomers, e.g. vinyl toluene, α-methyl styrene, methyl methacrylate, ethylene glycol dimethacrylate, ethyl acrylate, acrylonitrile, vinyl acetal, arallyl phthalate, diallyl maleate, and triallyl cyanurate. A wax such as paraffin wax, may be present. Filler materials, fire-retardant additives and pigments such as carbon black and antimony trioxide may be present. The mesh structure may be plastics netting. A membrane, such as a polyethylene sheet and a polyvinyl acetate sheet may first be laid on the surface. The mesh may be attached to the membrane so that the two may be laid together. Preferably the mesh has a thickness less than the desired thickness of the unsaturated resin layer subsequently to be applied.
Patent GB-551091-A (GB)
Title: Improvements in and relating to combustion turbine plants
IPC: F02C6/18
Filed: 1941-09-19
Abstract: 551,091. Dynamos. AKT.-GES. BROWN, BOVERI & CIE. Sept. 19, 1941, No. 12129. Convention date, Oct. 11, 1940. [Class 35] [Also in Groups XXVI, X and XIII] Relates to vehicles in which constant pressure gas turbines provide the traction power. The power developed by a gas turbine increases with decrease in the air inlet-temperature and this extra power is used for heating the vehicle. The extra power may be generated in a separate electric generator, the load taken by it being regulated by a thermo-metric device operating a rheostat. The electric energy may be used directly for heating or be used to generate steam or to heat air. The heating power generator may be constructed in one with the traction power generator being situated at 5, 6, within the commutator x of the traction generator w.
Patent GB-962283-A (GB)
Title: An improved balance having negligible friction
IPC: G01G7/00
Filed: 1962-03-29
Abstract: 962,283. Weighing apparatus. UNITED STATES ATOMIC ENERGY COMMISSION. March 29, 1962 [June 23, 1961], No. 12199/62. Heading G1W. A weighing apparatus comprises an aluminium frame 10, a vertical aluminium shaft 16 supported radially by an air bearing 14, supplied with compressed air from compressor 15, and vertically, by the mutual repulsion of magnets 24, 26, the magnet 24 being held on the shaft by the mutual repulsion. An air gauge 38 with a nozzle 40 directs air from an air metering system 43, connected to a compressor 15, against the shaft tapered portion 18. Variation of the distance between the shaft surface and gauge 38, as the shaft is axially displaced due to a load on pan 44, causes a variation in the internal back pressure in the gauge 38, This is sensed by the indicator 42 which is calibrated to read weight. Since the mutual repulsion of the magnets 24, 26 varies with the square of the distance between them the balance sensitivity would decrease with increase in weight. To partially counteract this a ferromagnetic disc 46 is attached to the shaft and a magnet 48 is provided, the attraction between the two partially offsetting the repulsion between magnets 24, 26 as the distance between the latter decreases. A copper damping sleeve 36 is mounted on an aluminium cup 28 coaxially with the shaft. Zero adjustment is accomplished by raising or lowering the magnet 26 by an adjusting screw 32. U.S.A. Specifications 1, 906, 715 and 2, 692, 498 are referred to.