baber/WOPTO huggingface dataset:
Patent GB-994141-A (GB)
Title: A method of dry spinning filaments from high polymers and apparatus for performing the same
IPC: D01F6/18
Filed: 1964-04-27
Abstract: 994,141. Dry-spinning apparatus. PHRIXWERKE, A.G. April 27, 1964 [June 14, 1963], No. 17349/64. Heading B5B. A dry-spinning apparatus incorporates a liquid seal in the outlet for the filaments. As shown a spinning shaft 1 has a hollow element 3, preferably funnel-shaped, in the base of the shaft, water or other sealing liquid being supplied to the funnel 3 by pipe 6. Valve 5 enables the amount of liquid to be controlled, suitably so that the amount added corresponds to the amount the bundle of filaments can carry adhering to their surfaces. The solvent vapour-air mixture in the shaft is withdrawn at outlet 2 for removal of solvent and recycling. The water or other sealing liquid, e.g. glycerol, glycols, or glycol ethers prevents the individual filaments sticking together or to the wall of the funnel despite the small size of the latter (e.g. a funnel of outlet diameter 4 mm. may be used with a spinneret having 200 orifices), but as a further precaution the funnel may be made of a fluorinated hydrocarbon resin e.g. poly tetrafluoroethylene. The spinning of polyacrylonitrile and copolymers or mixed polymers containing at least 80% acrylonitrile is described.
Patent GB-1395391-A (GB)
Title: Medical face masks
IPC: A61M16/12
Filed: 1972-04-14
Abstract: 1395391 Face masks VICKERS LTD 13 April 1973 [14 April 1972] 17416/72 Heading A5T [Also in Division F2] A medical face mask comprises a hollow body portion 1 arranged to be placed over the nose and mouth of a patient, and an inlet portion 5 communicating with the interior of the hollow body portion and including a tube 6 having at one end a gas, e.g. oxygen, inlet nozzle or injector 8 mounted therein, an air inlet device to permit a flow 16 of air to be drawn into the mask by the action of gas 15 passing through the nozzle 8, and outlet means 17 in the body portion 1 to permit exhaled etc air to leave the mask, the air inlet device being adjustable so that the air drawn into the mask by the injection of gas can be regulated according to a particular gas flow rate. The air inlet device comprises a pair of apertured members, one 7 fixed in the free end of the inlet portion, the other 9 rotatable relative to the member 7. Each member 7, 9 has a plurality of apertures so that rotation of the member 9 aligns particular apertures. The nozzle 8 extends through the aperture members 7, 9. A spring 10 holds the members in face-to-face contact. One member has a protrusion 12 on its contacting face, the protrusion riding over the contacting face of the other member during relative rotation and engaging selected apertures in the other member, to provide diluted air to vary the oxygen concentration to 50%, 60%, 70% or 80% at the respective settings. The mask is fitted to the patient by an elastic cord secured to holes (2) Fig 1 (not shown) in lugs 3 extending from the rim portion 4 surrounding the body portion 1 and facilitating close fitting of the mask to the patients' face. The body portion 1 is made of translucent, pliable, plastics material, and the tube 6 is rigid.
Patent GB-756007-A (GB)
Title: Aqueous acid solutions of o-alkyl-malic dialdehydes and a process for their preparation
IPC: C07C47/12
Filed: 1954-06-14
Abstract: The invention comprises dilute aqueous acid solutions of O-alkyl-malic-dialdehydes of the general formula OHC . CH(OR) . CH2 . CHO, wherein R denotes methyl, ethyl, propyl or isopropyl, which may be prepared by hydrolysing 2,3,5-trialkoxy-tetrahydrofuranes (prepared as described in Specifications 755,154 and 756,006) by the action of hydrogen ions.  The hydrolysis may be effected by heating on a water bath with excess aqueous hydrochloric or sulphuric acid. The products are useful as intermediates or, in buffered aqueous solution, as insecticides.  Examples describe the preparation of weakly acid solutions of O-methyl, ethyl, propyl and isopropyl malic dialdehydes from the corresponding 2,3,5-trialkoxy-tetrahydrofuranes by warming with aqueous hydrochloric acid.  The methyl and ethyl derivatives are characterized by forming the bis-4-nitrophenylhydrazones.ALSO:Buffered aqueous acid solutions of O-alkylmalic dialdehydes of the general formula OHC. CH(OR). CH2. CHO wherein R denotes methyl, ethyl, propyl or isopropyl, are suitable for the p  extermination of household insect pests such as Periplaneta.  (See Group IV(b) for preparation).
Patent GB-530890-A (GB)
Title: Improvements in or relating to jigs for treating ore-bearing and like materials
IPC: B03B5/22
Filed: 1939-07-15
Abstract: 530,890. Jigs. WERF CONRAD N. V., and SCHOUTEN, C. June 15, 1939, No. 17557. [Class 82 (ii)] A jig of the kind in which pressure liquid is supplied to the hutch or hutches from a pressure feed line provided with an intermittently or continuously operated valve device for producing pulsations in said hutch or hutches, is characterized in that the valve is provided with a plurality of discharge ports and is so constructed and arranged that, in operation, an uninterrupted flow of liquid discharges from said pressure feed line. Water shocks due to closing of the valve are thereby avoided, as is also waste of energy in overcoming inertia of stationary liquid in restarting the feed. In Fig. 1 water under pressure is supplied by pipe 10 to the hollow space 22 of the valve 11 and as the rotor 20 turns the water passes successively through the pipes 12, 13, 14, 15 to the hutches 16, 17, 18, 19 of the four jigs. The size of the hollow space 22 is chosen so that the valve is never completely closed and water is always passing either to a hutch or to the drain. By changing the size or position of the ports the length of time that each distributing pipe is open or closed can be varied. In addition to a pressure pipe connected to each hutch there may also be a suction pipe, and the four suction pipes may be fed through a valve that is mounted on the same shaft as valve 11, or the two valves may be combined in one Instead of suction pipes being connected to the hutches, the drain to which the hutches are connected may be kept under suction.. In Figs. 3 and 4 a combined suction-and-pressure valve is shown 48 and 47 being the suction and pressure lines respectively which are connected alternately to the distributer lines 50, 51, 52, 53 by passages 57 and 56 formed in the rotor 45. Fig. 6 shows an arrangement in which four compartments are grouped as a square and connected to a distributer valve 60 by flat pipes 66, 67, 68, 69.
Patent GB-420490-A (GB)
Title: Improvements in safety devices for moving stairways
IPC: B66B29/00
Filed: 1933-10-26
Abstract: 420,490. Escalators. WAYGOODOTIS, Ltd., 54, Fetter Lane, London. Oct. 26, 1933, No. 17618/34. Convention date, Feb. 10, 1933. Divided out of 419,334. [Class 78 (i)] [See also Group XXXVII] The control system for the driving motor 70 described in Specification 419,334, is modified by the inclusion of a dynamic brake switch J and an auxiliary dynamic brake switch JJ. The operation of the switch J renders effective the dynamic braking resistance 106 so that the motor is caused to act as a dynamic brake to assist in stopping the escalator, this action continuing as long as the speed of the motor armature is such, in conjunction with the strengthened motor field, created by the return of the field to initial position, as to induce in the motor armature 90 a voltage sufficient to maintain operated the switch JJ. The switch J is actuated when the brake switch H is returned to the off position by the operation of either the carriage switch 101, handrail switch 63 or 102, or governor contacts 72. The operation of these safety devices causes also the immediate dropping out of the up direction switch A, and the application of motor brake 91 and escalator brakes 92 and 93. The application of the latter brakes is relatively hard. Since it is undesirable always to stop the escalator quickly, provision is made by which normal stops, such as those obtained by pressing a button 107 are made less quickly. When the button 107 is pressed, the potential switch C opens, thus causing the de-energization of the motor 70 and the application of the brakes 91, 92, 93. Since the resistance 104 is rendered effective by the closing of the contacts 105, the application of the brakes 92, 93, is relatively soft. The motor is not used as a dynamic brake since the switch J cannot be energized while the switch C is open.
Patent GB-1116112-A (GB)
Title: A new or improved method of, and apparatus for, forming flexible metal bellows
Inventor: ELLIS BERNARD ROBERT
IPC: B21D15/06
Filed: 1966-04-22
Abstract: 1,116,112. Making bellows; corrugating. BROCKINGTON & SCOTT Ltd. 21 April, 1967 [22 April, 1966], No. 17628/66. Headings B3A and B3E. An internally reinforced metal bellows is made by successively forming an involution in a tube between adjacent reinforcing rings posi. tioned within the tube. As described, a tube is positioned in a support tube 15b, Fig. 1, of a movable frame 12 such that its end just enters a corresponding tube 15a of a fixed frame 11. Reinforcing rings 35a and 35b are placed on collets 32a and 32b, respectively, which are moved through the support tubes 15a and 15b to position the rings one on either side of a set of rollers 14b, Fig. 3. Each of the rollers 14a and 14b of each frame 11 and 12 is mounted at the end of a slide 18a, 18b held by a ring 22a, 22b in a slot of a member 21a, 21b, the members 21a and 21b being connected together by dog pins 24. The member 21a is rotated to cause rotation of the rollers 14a, 14b, the latter of which are moved inwards to form an involution in the tube, by the longitudinal movement of a sleeve 27b, which movement causes rollers 19b carried by the other end of the slides 18 and bearing against the conical inner surface of the sleeve 27b, to be moved inwards. After retracting the rollers 14b and the collet 32a, the tube is moved by the collet 32b so that the involution is aligned with the rollers 14a, which are moved inwards, by movement of the sleeve 27a, into the involution to locate the tube in position. The rollers 14b are moved slightly inwards to lock the reinforcing ring 35b in position and after positioning another ring (35c) (Fig. 6, not shown), within the tube by the collet 32b, the rollers 14b are further moved inwards to form the second involution. The process is thus repeated until the required number of involutions has been formed.
Patent GB-684870-A (GB)
Title: Improved firing mechanism
Inventor: TREVASKIS HENRY WILLIAM
IPC: F41A19/07
Filed: 1950-07-14
Abstract: 684,870. Firing mechanism. DUNLOP RUBBER CO., Ltd. July 6, 1951 [July 14, 1950], No. 17632/50. Class 92(ii) A trigger mechanism comprises a lever 16, Fig. 5, angularly movable to operate the firing mechanism of a gun, a retractable trigger grip 23 pivoted at 22 to one end of the lever, a spring 24 for urging the grip into the extended position, and means 25, 26, for maintaining the grip, when so desired, in a retracted position. The mechanism shown is housed in a casing 51 on the grip part of an aircraft control handle. When the pilot intends to fire the gun he raises a flap 3 which is pivoted at 5, Fig. 6, on the casing and which is linked at 10 to a safety lever 6 pivoted at 11. The lifting of the flap thus causes lever 6 to move anticlockwise, such movement serving to push the grip away from the maintaining'means 26, and by a pin and slot connection 12, 14 to rotate a member 13 which hitherto had prevented movement of the lever 16. The rotation of the member 13 brings a slot 15 therein into line with a stem 30, Fig. 5, of a spring- controlled plunger 28 abutting against the lever 16. A pull on the grip 23 now results in a movement of the lever 16 to complete an electric circuit for the firing of the gun.
Patent GB-456916-A (GB)
Title: Improvements in and relating to the manufacture of substituted diamines
IPC: C07C209/08
Filed: 1935-06-19
Abstract: Diamines of the formula R1R2N(CH2)n NR3R4, where " n " is an integer from 7 to 13 inclusive and R1, R2, R3 and R4 are the same or different alkyl groups or R1R2 and/or R3R4 represent the pentamethylene chain, are made by heating together an aminoalkyl halide of the formula R1R2N(CH2)nX, where X denotes a halogen atom and a secondary amine NHR3R4.  The halogen salt of the aminoalkyl halide may replace the aminoalkyl halide itself.  The products are useful as amoebicides.  In examples, K-chloro-n-decyldi-n-amylamine is heated with (1) di-n-butylamine and (2) piperidine; di-n-amylamine is reacted with (3) K-chloro-n-decyl-di-n-butylamine, (4) K-bromo-n-undecyl-di-n-amylamine hydrobromide, (5) lambda-chloro-n-undecyl-di-n amylamine hydrochloride or lambda-bromo n-undecyl-di-n-amylamine hydrobromide; (6) lambda-bromo-n-undecyl-di-n-butylamine hydrobromide is heated with di-n-butylamine.  The above aminoalkyl halides are prepared by the process of Specification 402,159, or by boiling the appropriate aminoalcohol with concentrated hydrobromic acid.  In the examples, lambda-chloro-n-undecyl-di-n-amylamine hydrochloride is prepared by treating lambda-di-n-amylamino-n-undecyl alcohol with thionyl chloride in chloroform solution below 0 DEG  C., and lambda-bromo-n-undecyl-di-n-amylamine hydrobromide is prepared from the same aminoalcohol by boiling with hydrobromic acid.  lambda - Bromo - n - undecyl - di - n - butylamine hydrobromide is prepared from lambda-di-n-butylamino-n-undecyl alcohol.  Secondary amines of the above formula are obtained by hydrolysis of the corresponding p-toluenesulphonamides, which are made by treating the sodium salt of p-toluenesulphonamide successively with the appropriate alkyl bromides, chlorides, or toluene-sulphonates.
Patent GB-145579-A (GB)
IPC: E05B37/02
Filed: 1920-06-29
Abstract: 145,579. Soc. d'Exploitation de la Fermeture Le Sphinx (Systeme Remy), (Assignees of Remy, E.). Jan. 17, 1914, [Convention date]. Locks, permutation.-The key of an ordinary lock is held in a retracted or sunken position by permutation mechanism which, when adjusted to a pre-arranged position, allows the key to project, whereupon t h e lock may be operated in the usual fashion. The stem l of a key provided with a bit o is connected by a pin m and longitudinal slot n with a shank k normally held in a retracted position against the action of a spring r by transversely-arranged rods e, the extremities of which engage rounded slots in the shank The rods c are slidably mounted in a frame a and are provided with projections f which normally bear against the solid parts of interposed disks i having internal notches d' and external teeth j which engage one of a series of internal teeth on wheels g provided with letters or numerals on their periphery. When these. wheels have been relatively adjusted to give the predetermined combination, the notches d<1> are in alinement with the projections f on the rods e, which are thus free to be pressed back by the spring r which simultaneously shoots forward the shank k.
Patent GB-494363-A (GB)
Title: Improvements in or relating to means for indicating failure of the electric supply in regenerative electric motor control systems
IPC: B60L7/12
Filed: 1937-06-25
Abstract: 494,363. Control of motors. GENERAL ELECTRIC CO., Ltd., and TURRALL, J. C. June 25, 1937, No. 17733. [Class 38 (iii)] For indicating failure of the supply in a regenerativ e motor control system, a lamp 14 or other indicator is connected to the supply in parallel with the motor 1, and a relay having a coil 18 energized in accordance with the motor armature current prevents energization of the indicator circuit by the voltage generated by the motor when the supply fails during regeneration. The contacts 17 of the relay are in parallel with contacts 15, 16 connected in series, the contacts 15 being normally closed auxiliary contacts of a line switch LP, and the contacts 16 normally closed auxiliary contacts of a contactor 13 whereby accelerating resistance 12 is shortcircuited. The motor 1 operates a trolley bus and during regenerative or motoring operation, the energization of the coil 18 closes the contacts 17 and the lamps 14 are energized. During regeneration, if the supply fails due to the trolleys leaving the conductors, the energization of the coil 18 falls and the lamps 14 are extinguished. During coasting with the motor disconnected, the lamp circuit is completed through the contacts 15, 16. If the contactor 13 is connected across the resistance 12 only, the contacts 16 may be dispensed with. The Provisional Specification describes an arrangement in which the armature current relay has two sets of contacts.
Patent GB-691933-A (GB)
Title: Improvements in or relating to the manufacture of blades for axial-flow turbines and compressors
Inventor: WADKINS BERNARD
IPC: B23C3/18
Filed: 1950-07-17
Abstract: 691,933. Milling turbine blades. ROLLS-ROYCE, Ltd. Oct. 15, 1951 [July 17, 1950], No. 17889/50. Class 83 (iii). [Also in Group XXIII] Relates to a method of machining an axial-flow turbine or compressor blade comprising at least one shroud 12 and a concave aerodynamic surface having a part which is a surface of revolution about an axis 16 which is not normal to the shroud or shrouds. The method comprises the first step of milling or grinding a major portion of the concave surface with a cutter having its axis parallel to the axis 16, and then removing the wedge-shaped portion 19 by a cutter 40 having its axis at right angles to the shroud, the depth of cut being limited by a cam and follower device 42, 53. In a milling-machine, two blades 10 are clamped by their roots 11 and by tabs 14, which may subsequently be removed, on carriages 23, 24 sliding on a vertically-adjustable table 28. The carriages are fed towards the cutter 22 by a screw 25 so that the plane, and then the concave, undersurfaces of the blades are machined. The wedge portions 19, 20 are removed in a second machine having a balanced knee 35, a milling cutter 40 of less diameter than the surface to be machined and having a radiused edge, and an adjustable follower 42. A table 46 carrying the blade 10 and the pattern 53 is reciprocated beneath the cutter and follower by a manually-operated rack-andpinion device 47, 48. Between reciprocations, the table 46 is fed laterally by a screw 44. In a modified machine for removing the end portions 19, 20 the knee 35, Figs. 8 and 9, carries an indexing plate 62a carrying a slide 63a which can be set to traverse the blank 10 along the axis 16. The cutter 60 has a diameter equal to the diameter of the surface of revolution so that the pattern 61 becomes a flat plate. The knee 35 can be controlled by a rack-and-pinion device 68 during initial adjustment. If the concave surface is not cylindrical, the plate 61 is suitably shaped.
Patent GB-1512332-A (GB)
Title: Oil-cooled compressors
IPC: F04B39/06
Filed: 1976-05-03
Abstract: 1512332 Rotary positive displacement compressors LINDE A G 3 May 1976 [7 May 1975] 17963/76 Heading F1F A rotary compressor 1 having a gas inlet 2 and a cooling oil supply passage 11 has control means 19 (as shown, a choke) for varying the flow of oil in dependence upon a control means 20 (as shown, a valve) for regulating the flow of gas through the compressor, both control means acting in the same sense. The compressor delivers through a non- return valve 4 to a separator 6 from which oil is returned to a pressurized tank 7. Pump 8 supplies oil for lubricating the bearings and to act on a piston 24, via a control valve 26, to open valve 20 and choke 19. When valve 26 vents the space 23 behind piston 24 to oil tank 10, valve 20 will close and choke 19 will restrict the flow of oil to the compressor. Also valve 18 will open to allow the compressor to discharge into tank 10, a pump 12 removing oil and possibly gas, the oil returning via separator 6 to tank 7. In another embodiment, pump 12 is replaced by a second compressor (31) acting in parallel with the first compressor (30) Figs. 3, 4 (not shown). The compressor (31) has a combined valve/choke (46) controlling gas and oil flows, and discharges into the outlet line of the first compressor downstream of the non-return valve (38).
Patent GB-465988-A (GB)
Title: Improvements relating to electrical connecting caps
IPC: H01C1/148
Filed: 1936-06-29
Abstract: 465,988. Making electric couplings. MENDEL, A., and KLEINMANN, E. June 29, 1936, No. 18046. Convention date, Dec. 20, 1935. Addition to 459,613. [Class 83 (ii)] [Also in Group XXXVI] A cap 3, especially for making connection with an electrical resistance such as employed in wireless sets, is stamped out integrally with a soldering lug, which is then bent into the form of a wire 2, as shown in the parent Specification, the cap being modified by having the bottom stamped out, leaving a ring 3 integral with the lug 2.
Patent GB-636411-A (GB)
Title: Improvements in or relating to protective devices for three-phase electric apparatus
IPC: H02H11/00
Filed: 1947-07-09
Abstract: 636,411. Detecting faults. BENT, R. A. July 9, 1947, No. 18081. [Class 37] [Also in Group XXXVII] In a protective system for polyphase apparatus, a relay or indicating device is connected in a phase-shifting arrangement between two points having the same potential under normal conditions, but a differing potential when the symmetry of the line voltages is disturbed. Connected in delta formation between the lines 1 ... 3 of a three-phase supply are a condenser Cl and resistance R1, the primary winding Tp of a transformer, and a condenser C2 and resistance R2. The secondary winding Ts is connected between points located between condenser C1 and resistance R1, and condenser C2 and resistance R2. The relay or indicator 5 is connected between a tapping 4 and line 1 through a limiting resistance R3. The circuit constants are proportioned so that the sum of the normal voltages across condenser C1 and resistance R2 is equal and in phase opposition to the voltage across Ts, so that no current flows in. the circuit C1, Ts, R2 and the points 1, 4 have the same potential. If the voltage across C1 is arranged to be the same as that across resistance R2, point 4 becomes the centre tapping of the transformer. A rectifier 6 is connected across the relav 5 which is responsive to unidirectional current.