baber/WOPTO huggingface dataset:
Patent GB-858396-A (GB)
Title: Improvements in or relating to projection printing apparatus for cinematograph films
IPC: G03B27/475
Filed: 1959-05-12
Abstract: 858,396. Photographic cameras &c. TECHNICOLOR CORPORATION. May 12, 1959 [May 22, 1958], No. 16217/59. Classes 97(1) and 98(1) A photographic projection printer for continuous strip negatives moving intermittently in a horizontal or vertical direction includes means for wetting the film, after it leaves the feed reel and before it arrives at the projection aperture, with a liquid of refractive index approximately equal to that of the film material, and also including means for spreading the liquid evenly over the film by means of an air-jet and employing suction at the film edges before or at the projection aperture to remove excess liquid. As shown in Fig. 1, the film F moves vertically from the feed reel 2 to the take up spool 3, and is passed through a tank 4, supplied by a constant head device 5, which contains perchloroethylene, tetrachloroethylene, or liquid of similar refractive index. A blowing device with nozzles 9 directed downwards, spreads the liquid evenly over the film, and also returns excess liquid to the tank 4. At the film gate 11, where liquid would tend to collect, three sides of the aperture are provided with serrated edges connecting with ducts and channels in the aperture walls through which a suction current of air is maintained to remove excess liquid, the lower edge of the aperture being grooved for removing excess liquid. Figs. 7 and 8 show in elevation and section means for removing excess liquid from the edges of a horizontally-moving film F, the duct 35 connecting with pipes through which air is drawn. Before being wound on to the take-up-spool 3, the film is passed through any suitable drying means 10.
Patent GB-816208-A (GB)
Title: Trimethylolpropane
IPC: C07C31/18
Filed: 1956-05-25
Abstract: Trimethylolpropane is separated from an aqueous solution containing trimethylolpropane and sodium formate by a process comprising treating the solution with a liquid solvent for trimethylolpropane so as to obtain an aqueous phase containing sodium formate in solution and a solvent phase comprising a solution of trimethylolpropane in the liquid solvent, the solvent being one which dissolves little water and is of low solubility in the aquous phase, separating the phases and recovering trimethylolpropane from the solvent phase.  The preferred solvent is ethyl acetate but other solvents, e.g. esters of alcohols containing 2-4 carbon atoms with saturated monocarboxylic acids containing 1 to 3 carbon atoms, and n-butyl and amyl alcohols may be used.  To recover the trimethylol-propane from the ethyl acetate or other solvent, the extract may be distilled to evaporate the solvent and any water present.  The residue from this distillation may be further purified by distillation at sub-atmospheric pressure. Alternatively the extract may be distilled to remove the water and the residue treated, as by cooling, to cause crystallization of the trimethylolpropane.  The production of the aqueous solution containing trimethylolpropane and sodium formate may be carried out by reacting butyraldehyde, formaldehyde and sodium hydroxide in an aqueous medium.  In one method of carrying out the invention the extraction is carried out in a packed tower substantially filled with liquid.  Ethyl acetate is introduced near the bottom of the tower and the aqueous solution to be treated is fed into the tower at a point above that of introduction of the ethyl acetate.  The ethyl acetate which contains the trimethylolpropane and a minor amount of water is withdrawn from the top of the tower.  The extraction proceeds most efficiently at a temperature of from 40 DEG to 70 DEG  C.  In the example, ethyl acetate is used as the solvent; the extract comprising water, ethyl acetate, trimethylolpropane and a small amount of sodium formate is steam distilled to remove practically all of the ethyl acetate and the residue is distilled at subatmospheric pressure to give pure trimethylolpropane as the distillate.  Specification 816,210 is referred to.
Patent GB-186109-A (GB)
Title: Hot air furnace
IPC: F24H3/00
Filed: 1921-06-13
Abstract: 186,109. Brunett, D. A. June 13, 1921. Air-heating furnaces.-Two casings 5, 6, connected together but separated by a partition 8 and having a common air chamber 9 at the base, there being arranged within the respective casings and spaced therefrom at the top and sides a primary combustion chamber 15, located above a fire-pot 10, and a secondary combustion chamber 20. The combustion chambers 15, 20 are provided respectively with a cylindrical member 17, closed at the bottom and communicating, by a pipe 17<a> with the air chamber 9, and an open-ended tube 22, the member 17 and the tube 22 being fitted with distributing-pipes 17<b>, 23. Open-ended tubes 16, 24, passing through the combustion chambers, connect the air chamber 9 with the spaces between the top of the chambers 15. 20 and the outer shell, these spaces being divided into compartments 18. 25 by partitions 18<a>, 26<a> which extend downwardly into the spaces between the combustion chambers and the casings 5, 6. Distributing-pipes 19, 26 are provided leading from each of the compartments into which the tubes 16, 24 deliver. The combustion chambers 15, 20 are connected by a smoke flue 21 and upper and lower dampered outlets 27, 30 lead to the chimney 29.
Patent GB-1531969-A (GB)
Title: Switch with mechanical restraint at the beginning of the closing motion of electric contacts
IPC: H01H5/04
Filed: 1977-04-20
Abstract: At the start of the closing movement, a plunger (1) is forced back against the influence of a spring (2) until its end edge (4) slides away over the crest of a sphere (5), as a result of which the restraint is ended. This makes it impossible for the circuit to be connected to a load just by the operating device of the switching apparatus being tilted for only a short time duration. <IMAGE>
Patent GB-166176-A (GB)
Title: Improvements in and relating to military and other motor vehicles
IPC: F41H7/00
Filed: 1917-11-08
Abstract: 166,176. Newton, H. Nov. 8, 1917. Armouring vehicles.-A military vehicle is formed by fitting the power and transmission units of an agricultural tractor on a body which is fitted with endless, tracks and has an inverted boat-shaped armoured top. The body comprises a base 5 strengthened by angle-irons 6 and fitted with pairs of depending flanges 1 between which are mounted driving and idler sprockets 3, 3<1> and rollers 4 for endless tracks. The power unit is supported by a spring 9 and drives the sprockets 3 through reduction gearing. The sides may be pierced for machine or other guns and sliding or trap doors may be provided in the floor or sides for laying or throwing explosive charges or grenades.
Patent GB-203084-A (GB)
Title: Cutter for gramophone needles
IPC: G11B3/48
Filed: 1922-06-13
Abstract: 203,084. Ritchie, F. June 13, 1922. Addition to 187,844, [Class 30, Cutlery]. Reproducing needles, sharpening-appliances for. -In the needle cutter described in the parent Specification, the cutting blade is tiltably mounted in its operating member, the blade being held up to the face of the other needle member by the screen which limits the opening of the two pivoted members, thereby ensuring a clean cut. The two members f, g are pivoted together at k, the member g being returned after the cut to its original position by the screw j. The blade k is received in a recess a in the member g, the recess being equal in depth to the thickness of the blade, except for a slight elevation against which the blade rests. By adjusting the limiting screw l the blade may be tilted about the elevation d so that its edge contacts with the face of the needle guide e on the other member f.
Patent GB-265540-A (GB)
Title: Improvements in or relating to the manufacture of moulded sulphur
IPC: C01B17/02
Filed: 1926-06-30
Abstract: 265,540. Rhenania Kunheim Verein Chemischer Fabriken Akt.-Ges., (formerly Rhenania Verein Chemischer Fabriken Akt.-Ges.). Feb. 3, 1926, [Convention date]. Casting sulphur; moulds.-Sulphur is cast in metallic moulds having interior surfaces resistant to molten sulphur. The moulds are preferably formed of, or coated with aluminium or its alloys and consist of conical or cylindrical tubular members having a longitudinal joint or joints packed with a strip of rubber &c. Fig. 4 shows one form of mould in which the packing strip k is clamped between flanges j. Fig. 6 shows a modification in which the edges of the joint n extend beyond the flanges l so that the packing o is out of contact with the sulphur. Grate-like moulds may be employed.
Patent GB-999403-A (GB)
Title: Complex polyesters and their production
Inventor: LERER MOISE
IPC: C08G63/676
Filed: 1963-04-25
Abstract: A process for the production of complex esters comprises reacting polycarboxylic acids or their functional derivatives with meta dioxanes and monohydric or polyhydric alcohols or ethers of the latter containing at least one free hydroxyl group.  Specified metadioxanes are 4-methyl-, 4:4-dimethyl-, 4:5-dimethyl- and 4 - methyl - 4 - (21 - hydroxyethyl) - metadioxane. Specified polycarboxylic acids are glutaric, succinic, adipic, phthalic, maleic and fumaric acid.  Specified alcohols are ethanol, butanol, dodecanol, octadecanol, ethylene glycol, diethylene glycol, the monoethyl ether of diethylene glycol, glycerol and pentaerythritol. The examples describe the preparation of polymers from:-(2) maleic anhydride, 4:4-dimethyl-m-dioxane and diethylene glycol; (3) maleic anhydride, 4:4-dimethyl-m-dioxane and dipropylene glycol; (4) maleic anhydride, 4-methyl-4-(21-hydroxyethyl) metadioxane and diethylene glycol; (5) maleic anhydride, 4:4-dimethyl-m-dioxane and glycerol; (7) maleic anhydride, 4:4-dimethyl-m-dioxane and n-amyl alcohol; and (8) o-phthalic anhydride, 4:4-dimethyl-m-dioxane and diethylene glycol. In Example (6), the products of Examples (1) to (5) are cured by reaction with styrene in the presence of cobalt octanoate and methyl ethyl ketone peroxide.
Patent GB-156837-A (GB)
Title: Improvements in or relating to machine guns
IPC: F41A13/10
Filed: 1919-06-30
Abstract: 156,837. Cassetta, V., and Capaldo, F. June 30, 1919. Machine guns. - Relates to machine guns of the type in which a pivoted spring-controlled hammer 17 is cocked and held by the breech-bolt 3 as it slides in the receiver 1, the hammer being released to strike a spring-retracted firing-pin 7 when the breech-block reaches the firing position. According to the invention, the hammer, pivoted at 12, is connected bv a link 14 to a spring-actuated plunger 15 and is retained in cocked position solely by the breechblock, the trigger 22 acting through links 26, 27 on a sear 28 which engages a bent 28a in the breech-block.
Patent GB-291797-A (GB)
Title: Improvements in and relating to sewing machine feeding mechanisms
IPC: D05B27/02
Filed: 1928-06-06
Abstract: 291,797. British Thomson-Houston Co., Ltd., (Assignees of Stephenson, H. M.). June 9,1927, [Convention date]. Feed by dogs; driving.-A four-motion feed bar 19 is operated by a shaft 22 which oscillates and moves axially, and is associated with an adjustable sliding bar 38 which can reverse the feed or alter the length of stitch. An electric motor 50 mounted beneath the bed plate 10 of the machine drives the shaft 55 of the rotary loop taker 17, the vertical shaft 28 and the needle-bar driving shaft 59, through suitable gearing contained in the box 10<b>. A cam 27 at the base of the shaft 28 turns in a square hole 29<a> in a bar 29 which abuts against an arm 32 and a stop 31 on the shaft 22 so that the transverse-motion of the bar causes the shaft 22 to move axially, which in turn causes the lever 21 to raise and lower the feed bar 19 by the action of the ball 25 and stepped recesses 19<a>, 21<a> on the feed bar and lever respectively. The longitudinal movements of the bar 29 cause a roller 35 thereon to rock a lever 34 pivoted at 37 and cause a bar 38 rigidly connected thereto to rock the shaft 22 through the arm 33 and rod 41. The bar 38 has a roller engaging a groove 40 running the length of the lever 34. By releasing the lock nut 43<a> of the screw 43 and moving the bar 38 along the slot 40 towards or away from the pivot 37, the stitch is shortened or lengthened. By moving the bar past the pivot, the feed is reversed. Spool winding.-The main shaft of the motor 50 drives a vertical shaft 54 extending above the top of the machine for winding the spools. The other shafts are driven from a pinion on the base of this shaft.
Patent GB-630069-A (GB)
Title: Improvements in or relating to ultra-high-frequency electron-discharge tubes of the velocity-modulation type
IPC: H01J25/12
Filed: 1945-06-28
Abstract: 630,069. Velocity-modulated tubes. SPERRY GYROSCOPE CO., Inc. June 28, 1945, No. 16457. Convention date, June 28, 1944. [Class 39 (i)] A double-resonator velocity modulation tube has an extensible drift tube interconnecting the two resonators whereby the length of the drift space may be varied without altering the tuning of the resonators themselves. The extensible drift tube comprises two parts 38, 41 jointed together by a flexible diaphragm 42, and whose distance apart may be varied by means of a set of screws 47 located between disc 39 fixed to part 38, and disc 31 fixed to part 41. Resonator 16 is tunable by means of a set of screws 45 located between the resonator wall 15 and disc 39, and resonator 28 is separately tunable by means of screws 451. Specification 523,712 is referred to. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 630,110. This subject-matter does not appear in the Specification as accepted.
Patent GB-1219591-A (GB)
Title: Improvements in or relating to limb supports
Inventor: HARRIS KENNETH WILLIAM GODFREY
IPC: A61F13/06
Filed: 1967-04-11
Abstract: 1,219,591. Limb supports. K. W. G. HARRIS. 11 April, 1968 [11 April, 1967], No. 16535/67. Heading A5R. A limb e.g. ankle support 1 comprises a block of resilient material with an aperture 2 extending therethrough, the dimensions of the aperture being such as to comfortably engage a persons limb, and with an opening 4 between the aperture and the outer wall of the block so as to enable the support to be positioned on the limb. The opening is preferably fitted with a fastener arrangement and the aperture is suitably inclined so that the foot end of the aperture is at a greater distance from the base 3 than the other end of the aperture. A removable inner liner may be provided to fit inside the aperture if required.
Patent GB-296722-A (GB)
Title: Improvements in or relating to devices for catching cuttings and the like of precious metals whilst being worked by hand
IPC: A61C19/00
Filed: 1928-06-07
Abstract: 296,722. Voigt, G. Sept. 6, 1927, [Convention date]. Cuttings, catching.- A device for catching the cuttings of precious metals which are produced when operating on work such as dental gold plates, crowns, bridges &c. comprises a shield a of aluminium, wood fibre, papier mache, vucanite &c. provided with holes d, e through which are passed the fingers which hold the work h and a recess g against which another finger rests externally. The cuttings are caught by the high sides b, c. A flanged portion i of the shield serves for resting the hand holding the operating tool, that shown in Fig. 1 being a dental drilling-machine. The Specification as open to inspection under Sect. 91 (3) (a) stated also that the front wall b might be formed as a mirror so as to throw a light on the work, that a sieve might be placed in the bottom of the shield to separate, the cuttings from tools which might also be collected. therein, and that the shield might be attached to the arm or wrist of the operator, e.g. by means of clamps, buckles, indiarubber, eyelets &c. This subject-matter does not appear in the Specification as accepted.
Patent GB-836922-A (GB)
Title: Improvements in or relating to heat transmitting tubes
Inventor: WALL ALAN JAMES
IPC: B21C37/26
Filed: 1957-05-24
Abstract: 836,922. Making heat exchanger tubes; soldering and brazing. CLAYTON DEWANDRE CO. Ltd. March 27, 1958 [May 24, 1957], No. 16590/57. Classes 83 (2) and 83 (4). [Also in Group XIII] In making a heat exchanger tube, a wire coil 2 is helically wound around the tube 1, a binding wire 3 and a bonding wire 4 of solder or brazing metal are provided inside the coil and the assembly is passed through an induction coil 5 to melt the solder &c., the bonding wire screening the binding wire from the induction coil. The binding wire 3 and the bonding wire 4 are of flattened section with the bonding wire of a width at least equal to and preferably greater than that of the binding wire. In the induction coil the binding wire is screened so that its temperature rises approximately only at the rate of the temperature of the tube wall. A helical groove 6 is provided in the tube to locate the coil 2, an additional solder wire 7 is wound in the space between the turns of the coil 2 and heating may take place in an inert or reducing atmosphere. The binding wire may be of other section.
Patent GB-870315-A (GB)
Title: Improvements in or relating to nuclear reactors
IPC: F17C13/00
Filed: 1959-05-14
Abstract: 870,315. Nuclear reactors. SIEMENSSCHUCKERTWERKE A. G. May 14, 1959 [May 14, 1958], No. 16592/59. Class 39(4). [Also in Group XXVIII] In a liquid moderated reactor, thermal insulation is provided between the moderator and the coolant. A tube 2 immersed in moderator and containing a fuel rod 5 over which coolant flows is surrounded by a roll 1 of foils, the layers of foil being spaced apart by projections 3 and held together by hooks 4; the spaces between the layers are filled with moderator to provide thermal insulation, the spacing of the layers being such that heat cannot be transferred by convection in the spaces. At the ends of the tubes the foils are not sealed, so that a limited moderator flow is possible for cleansing. The foils are of Zr, Al or their alloys and are of the order of 0.1 mm. thick. The tank containing the moderator may also be insulated in a similar way. The foils may be slit for easy assembly.
Patent GB-438264-A (GB)
Title: An improved collapsible crate
IPC: B65D6/16
Filed: 1935-06-07
Abstract: 438,264. Crates. ROWSE, T. A., 71, Charlestown Road, St. Austell, Cornwall. June 7, 1935, No. 16604. [Class 18] Each end of a collapsable crate is formed by four bars pivoted together by pins 6, 7 and fixed by a slat or slats 8. The bottom bar 2 has a rabbeted edge 3 on the inside, and a separate bottom slides in the two rabbeted end bars 2 and has a central slat 17 projecting beneath the bars 2. Two or more slats 10, 11 form the sides of the crate, and fix the ends together. A separate framed and slatted member forms the top of the crate. The top and bottom members may be clamped to the ends by wires encircling the crate.
Patent GB-633888-A (GB)
Title: Improvements in or relating to continuous-current electric commutator-motor control systems
IPC: G05B11/01
Filed: 1947-06-24
Abstract: 633,888. Exciting dynamo-electric machines. SPERRY GYROSCOPE CO., Inc. June 24, 1947, No. 16654. Convention date, June 29, 1946. [Class 35] [Also in Groups XXXIII and XXXVIII] A motor has two excitation components, one varying with a control voltage and the other with the voltage across auxiliary brushes. As shown, the motor for driving a load 28 in synchronism with a handle 29 has load brushes 3, 4 and field windings 46a, 46b energized by the output of amplifier 38, the input to which is the voltage across auxiliary brushes 6, 7 and that induced in stator winding 37 of signal transformer 35 when the two rotor windings 34, 31 on the two shafts 36, 27 are not in positional agreement, the motor speed being thereby corrected. The field windings may be connected across the brushes 6, 7 with the source of signal voltage in series, directly or through an amplifier. The motor may have interpoles of permanent magnet material.
Patent GB-814522-A (GB)
Title: Improvements in or relating to internal-combustion engine control devices
Inventor: ARNOT ALFRED ERWIN REGINALD
IPC: F02D9/00
Filed: 1954-06-04
Abstract: 814,522. Starting and stopping direct injection engines. SHARP, J. R., and KAYE, E. June 3, 1955 [June 4, 1954], No. 16659/54. Classes 7(3) and 7(5) A diesel engine starting and stopping control means comprises an operating member 43, Fig. 2, movable in a gate 44 from a mid-position shown in one direction to set the pump control rod to supply excess fuel for starting and operate a starter switch 68 and in the opposite direction to cut off the fuel, the gate 44 preventing the lever moving straight through in one plane from the stop position to the starting position. In Fig. 1 the control levers 26, 27, of the fuel injection pumps of an opposed cylinder engine are coupled by a rod 28 which is connected through a spring 29 to an accelerator pedal linkage 30, a speed governor 34 overriding the accelerator pedal if a predetermined speed is exceeded. The lever 43 is slidable on a shaft 42 and travels in a gate 64, 65, Fig. 3, projections 55, 56, being provided on the lever 43 for actuating two loosely pivoted levers 51, 52. To start the engine the lever 43 is slid along the shaft 42 and moved to the left, Fig. 2, in the gate portion 64, Fig. 3, whereby the starting switch 68 is closed and lever 51 is moved to the left to actuate a cable 49 which rotates a cam 60 from its normal position, in which it co-operates with a lever 61 to determine the normal maximum pump delivery, to a position in which a flat 160 thereon permits the control rod 28 to move to an excess fuel supply position for starting. After starting the lever 43 is returned to its mid-position and a spring 66 urges it along the shaft 42 out of alignment with the starting gate portion 64 to prevent inadvertent operaion of the starting means. To stop the engine the lever 43 is moved to the right through the gate portion 65, actuating the lever 52 which is connected by a cable 50 to a lever 63, Fig. 1, which moves the control rod 28 to the cut-off position. The movement of lever 43 in the starting direction may first operate a heater for the fuel or a solenoid valve to admit coldstarting fuel, the starting switch being operated after an appropriate interval by further movement of the lever 43, or by the action of a time-delay device.
Patent GB-686955-A (GB)
Title: Improved process and apparatus for the blowing of slag wool
IPC: C03B37/06
Filed: 1951-07-13
Abstract: 686,955. Slag wool. SCHERMER, K., and PICHLER, W. July 13, 1951, No. 16691/51. Class 56. In the blowing of slag-wood the slag is conducted directly from the tap-hole of a furnace to the blowing. jet, and changes in the viscosity of the slag caused by fluctuations of temperature and/or basicity are allowed for by adjustments of the cross-sectional area of the slag stream to the jet. This is effected by a slag launder 1, the cross-sectional area of the outlet 2 of which is controlled by a slide 4 guided along horizontal slides 3 and having a trough shaped recess 8. The jet 9 is adjustable vertically and in two horizontal directions at right angles to each other.