baber/WOPTO huggingface dataset:
Patent GB-516670-A (GB)
Title: Improvements in or connected with means for dropping bombs and other like bodies from aircraft
IPC: B64D1/04
Filed: 1938-07-01
Abstract: 516,670. Mechanical switches without quick action. BLACKBURN AIRCRAFT, Ltd., and EMSLEY, F. July 1, 1938, No. 19514. [Class 38 (v)] [Also in Group XXI] A switch is mounted on the door of a bomb compartment in aircraft and connected in circuit with electrical release mechanism for discharging the bomb in such a way that it cannot be closed to energise the release circuit until the door is open. As shown in Fig. 2, a door a, hinged at a<1> to one side wall b of a bomb compartment, carries on its inner surface a bracket a<2> connected by a pin a<3> to one end of a spindle c mounted to slide in the switch casing d carried on trunnions d<1> in a bracket e. The switch enclosed in the casing d comprises fixed contacts f, f<1>, Fig. 3, mounted on a block of insulating material f<2> which forms a closure for the upper part of the casing, the movable contact consisting of a metal ring g mounted on the spindle c between two insulating parts g<1>, g<2>. In order to ensure that the contacts will not close the circuit until the door is fully or nearly open, the lower end of the spindle c is threaded into a part c', a lock-nut c<2> being provided to fix the parts in any adjusted position.
Patent GB-127195-A (GB)
Title: Improvements in Safety Razors.
Inventor: MEERSCH ANDRE EMMANUEL MARIE V
IPC: B26B21/34
Filed: 1918-11-27
Abstract: 127,195. Meersch, A. E. M. van der. Nov. 27, 1918. Razors, safety. The edges of a thin blade b, Fig. 6, are protected by rollers c. which are mounted between flanges formed integrally with a guard-plate or frame c. A removable scavenger plate f formed with slots f<1> may be arranged to bear against the rollers e. The spindles of the rollers may engage open-ended slots c<2>, Fig. 3, in the flanges of the frame c, a pivoted locking- plate h formed with slots h<2> being provided to hold the rollers in place. In another arrangement, the spindles e<1>, Fig. 5, of the rollers are held in open slots c' in the flanges of the frame c by a springy wire loop i. A springy corrugated plate may be arranged between the blade b, Fig. 6. and the frame c. The rollers e or any other part of the razor, such as the backing-plate a, may be made of vulcanized fibre, glass, porcelain, celluloid, or other non-metallic material.
Patent GB-983881-A (GB)
Title: Improvements in nuclear reactors
IPC: G21C1/16
Filed: 1962-05-22
Abstract: 983,881. Nuclear reactors. SOC. ANGLOBELGE VULCAN S.A. May 22, 1962 [May 24, 1961], No. 19612/62. Heading G6C. A nuclear reactor provided with two separate circuits for the coolant and the moderator, the moderator being a variable mixture of two fluids of different moderating characteristics, is controlled by injecting and extracting poisons in the moderator. The reactor shown in Fig. 1 comprises fuel/coolant spaces 3 and moderator regions 2 to which different moderator fluids are fed through inlets 5 and 4 respectively, the proportion being controlled by valves 9 and 8. The moderator is circulated by a pump 10 and after leaving the reactor passes to a separator 7 which delivers to outlet 13 and 14 respectively a pure moderator and a moderator containing a determined amount of soluble poison. When the reactor has been shut down by poisoning it may be brought up to power again by rinsing out the poisoning moderator and replacing it with fresh moderator.
Patent GB-1100824-A (GB)
Title: Polyfluoropyridines
IPC: C07D213/63
Filed: 1964-05-11
Abstract: The invention comprises polyfluoropyridine of the formula <FORM:1100824/C2/1> where X is hydrogen, a hydrazine, alkyl, aryl, alkenyl, hydroxyl, substituted or unsubstituted alkoxy or aryloxy group, a substituted or unsubstituted alkyl thio or aryl thio group, an amino, alkylamino, dialkylamino group, or -CR1R2R3 where R1 is hydrogen or alkyl, R2 is hydrogen, cyano amido, carboxy, carbalkoxy and R3 is cyano, amido, carboxy or carbalkoxy; and each of Y and Z is fluorine or one of the groups defined for X.  The compounds are prepared by reacting pentafluoropyridine with a nucleophilic reagent containing the residue X, e.g. an alkali metal hydride, alkali metal hydroxide, hydrazine, lithium alkenyls, alkali metal alkoxides and aryloxides, and the corresponding sulphides, ammonia, mono- and di-alkylamines, alkali metal alkylates, arylates and alkenylates; alkyl, aryl or alkenyl Grignard reagents and compounds (R1R2R3)nM, where M is a metal of valency n. The degree of substitution in the product is determined by the molar ratio of the reactants; the initial attack is at the 4-position. A large number of compounds are specified.  2,3,5,6 - Tetrafluoro - 4 - hydroxy pyridine can be converted to 2,3,5,6-tetrafluoro-4-methoxy pyridine by reaction with diazomethane, and to the anilinium derivative by reaction with aniline.  2,3,5,6 - Tetrafluoro - 4 - hydrazinopyridine can be converted to 2,3,5,6-tetrafluoropyridine by reaction with copper sulphate and to 2,3,5,6-tetrafluoro-4-phenylpyridine by reaction with bleaching powder and benzene.
Patent GB-147684-A (GB)
Title: Improvements in or relating to mechanism for feeding envelopes to machines
IPC: B41L47/46
Filed: 1920-07-08
Abstract: 147,684. American Multigraph Co., (Assignees of Chisholm, C.). Nov. 15, 1917, [Convention date]. Stopping, tripping, and like arrangements.-A machine for feeding envelopes to and delivering them from machines, such as addressprinting machines, is constructed so as to deal with envelopes of various sizes, the flaps of the envelopes being engaged successively by pairs of fingers which are swung towards each other so as to engage the flaps and away from each other to release the flaps for delivery. In the event of a failure in the sheet feed, the machine is stopped automatically by an electro-magnet controlled by feeler mechanism. As shown in Fig. 2, the envelopes are piled with their flaps downwards in a magazine with a vertical front side 12 arranged above an impression roller 50 and spaced above same by a distance equal to the thickness of an envelope. The envelope is kept in contact with roller 50 by means of rollers 23, 24 and a curved guide 54. After printing the envelope is delivered by rollers 30, 31, the latter being driven from roller 50, and it then passes down a guide 34 to a stacking-device formed of a rotary member 36 formed with a slit 37 which receives it and passes it to a set of stacking-bars 90 fitted with a follower 91. The machine is driven from a pulley freely mounted on the shaft 51 and connected to the latter by an axially-movable jaw-clutch operated by a lever 103 shown diagrammatically in Fig. 6. A circuit to an electro-magnet 110 passes through the lever 103 when this is set to move the clutch to operative position, and this circuit also passes to a spring contact 116 and the circuit would be closed at each revolution by a projection 50<d> on roller 50, but normally the envelope being operated on is interposed between the contacts 116, 50<d>. If, however, an envelope is not correctly fed, or is not fed at all, the circuit is closed, and the lever 103 is attracted by the magnet 110 and the drive is de-clutched, the circuit to magnet 110 being simultaneously broken at 105, 106, until the clutch is again thrown in.
Patent GB-459530-A (GB)
Title: Improvements in and relating to containers or holders for pins, needles, nails and like pointed articles
IPC: D05B91/12
Filed: 1935-07-10
Abstract: 459,530. Attaching pincushions to wearing-apparel and the person. CARR, H. W., 97, Caledonian Road, King's Cross, London. July 10, 1935, No. 19702. [Class 43] [See also Group XIV] A holder for pins, needles, nails, and like pointed articles comprises a bunch of tightly packed filaments, threads or the like which are held within a casing 11 so that one or both cut surfaces of the bunch are exposed for the reception of the pins, &c., the casing being provided with means, e.g. a clip 15 or a strap, by which it can be secured to the clothing or person of the user. The casing may be formed as a clip or clamp to grip the filaments, or may be formed in two parts secured together by a transverse bolt.
Patent GB-221786-A (GB)
Title: Improved alloys for tipping metallic surfaces
IPC: C22C27/04
Filed: 1924-08-21
Abstract: 221,786. Heraeus Ges., W. C. Sept. 10, 1923, [Convention date]. Alloys for tipping gold nibs, gramophone needles, compasses, and the like, are made by melting together in an electric arc tungsten, 10- 15 per cent of platinum, and up to 1.5 per cent of carbon. The alloys may be made by subjecting a compressed mixture of the powdered ingredients to the action of an electric arc in a current of reducing gas such as hydrogen.
Patent GB-280169-A (GB)
Title: Improvements in or relating to processes of producing tetraethyl lead
IPC: F02F1/04
Filed: 1927-07-26
Abstract: 280,169. Calcott, W. S., Parmelee, A. E., and Lorriman, F. R. Nov. 3, 1926, [Convention date]. Lead tetra-ethyl is prepared by the interaction of ethyl chloride and an alloy of lead with both sodium and potassium. The reaction may be effected in an open or closed vessel, and at ordinary or raised temperature. According to the examples, ethyl chloride is heated for some hours at temperatures of 30' and 45‹ C. in a closed vessel with lead alloyed with 9.4 or 9.5 per cent sodium and 0.75 per cent potassium; the yields are contrasted with those obtained by the use of lead containing 10 per cent of sodium only.
Patent GB-1216770-A (GB)
Title: Electrodepositing chromium coatings on steel surfaces
IPC: C25D11/38
Filed: 1968-04-26
Abstract: 1,216,770. Electro-depositing chromium or hydrated oxide thereof. NIPPON KOKAN K. K. April 26, 1968 [April 28, 1967], No.19879/68. Heading C7B. An adherent corrosion resistant coating is produced on a steel surface by cathodic reduction is an aqueous solution comprising chromic acid e.g. 50g/ 1 CrO 3  and one or more auxiliary agents selected from thiosulphate, sulphite, (di) thiosulphite, pyrosulphite, bisulphite and sulphide, e. g. 0À75g/ 1 Na 2 S 2 O 3 . 5H 2 O. When a circulation cell is used, e. g. electrolyte flowing at a speed of 70 m/min, a metallic Cr film is formed; when a stationary cell is used, a hydrated chromium oxide film is formed.
Patent GB-813718-A (GB)
Title: Device for widening or expanding human jaws
IPC: A61C7/10
Filed: 1957-06-25
Abstract: 813,718. Teeth regulating. GERBRANDS, P. June 25, 1957, No. 19978/57. Class 81 (2). A device for widening human jaws comprises a palate plate in two parts, an arcuate member 1 part of which is embedded in one part of the palate plate and the other part of which is slidable in a sheath 3 embedded in the other part of the palate plate, and actuating means co-operable with the arcuate member and the sheath to effect relative movement of the arcuate member and the sheath or locking of the arcuate member relative to the sheath. Teeth 2 of the arcuate member 1 are engaged by two of several rods 7 which extend transversely of the sheath and are carried between a toothed locking disc 4 and an adjustment disc 8 which is slidable in a bore 10 in the wall of the sheath and is manipulated by a key which engages holes 9 in the disc 8. The locking member 4 is normally located in a recess 6, having a toothed periphery, in the wall of the sheath 3 and is prevented from turning by interengagement of the teeth on the locking disc 4 and the recess 6, respectively. The locking disc 4 is freed from the recess 6 to allow adjustment of the curved strip 1 within the sheath 3 by pushing the adjustment disc 8 inwardly of the bore 10. Adjustment of the arcuate member 1 is effected by turning the adjustment disc 8. The device is locked by returning the locking disc 4 to the recess 6 which simultaneously moves the adjustment disc 8 outwardly in the bore 10.
Patent GB-200139-A (GB)
Abstract: 200,139. Avery, Ltd., W. & T., and Timson, W. March 6, 1922. Indicating-mechanism; pendulum-weight apparatus.-An indicating mechanism for weighing scales comprises a rotatable weight indicator wholly suspended or floated by means of flexible ribbons or the like from a member adapted to oscillate about a fixed axis and which constitutes or is connected to the weighing resistant of the scale. A quadrant 14 formed integral with a pendulous resistant 10, pivoted on knife-edges 7, carries two sets of flexible ribbons 15, 16 which serve as a mounting for a drum 19 carrying two indicating dials 20. Slots 22<a> formed in crossmembers 22 embrace the drums 19 and prevent any swinging of the indicator, so that the movement of the pendulum causes a corresponding rotation of the dials 20. The ribbons 15, 16 contact with ribs 28 formed on the quadrant 14 and drum 19. The contact is substantially linear and allows of self-adjustment of the ribbons for slight torsional movements of the indicator. In a modification, the dials 20 are replaced by cylindrical charts.
Patent GB-792959-A (GB)
Title: Improvements relating to automatic tuning systems
IPC: G01S13/24
Filed: 1955-07-11
Abstract: 792,959. Automatic frequency and tuning control systems. BRITISH THOMSONHOUSTON CO., Ltd. July 11, 1955 [July 21, 1954], No. 20024/55. Class 38 (4). [Also in Group XL (c)] In a radar transmitter-receiver with provision for avoiding interference by mechanically varying, through remote control by a motor 11, the frequency of the transmitter oscillator 1, and of the receiver local oscillator 5, and the tuning of a filter 6 between the antenna duplexer 3 and the receiver frequency changer 7, electronic motor control systems provide fine adjustment and control of the local oscillator frequency and mid-frequency of the pass-band of the filter 6. The coarse and fine adjustments may be independent but rendered conjointly operative by differential gearing 15, 15<SP>1</SP>. As shown, the difference frequency between the transmitted and received radar pulses and local oscillations is obtained from a mixer 18 and applied to a frequency discriminator 18a tuned to the desired difference whose output through a motor 16 also controls the differential gears 15 acting through a cam 14 to tune a resonator of the local oscillator, e.g. a klystron. The filter 6 is controlled as in Specification 792,958 by directional waveguide couplers 20, 20<SP>1</SP> applying oscillations from the input and output of the filter 6 to a balanced phase discriminator 19 comprising directivelycoupled waveguide sections, whose output amplified at 21, controls through a motor 161 the differential gear 15<SP>1</SP> acting through a cam 141 to adjust elements of the filter 6. Alternatively, the outputs of the couplers 20, 20<SP>1</SP> may be beat with the local oscillations and the reduced frequencies applied to the phase discriminator 19.
Patent GB-689546-A (GB)
Title: An improved stand for a pressing iron
IPC: D06F79/02
Filed: 1951-08-24
Abstract: 689,546. Stands for hand-irons. TONKS, C. R. Aug. 24, 1951. [Aug. 29, 1950] No. 20038/51. Class 138 (ii). A stand for a pressing iron comprises a flat platform 10 having at its rear end a clamp 13, 14 for securing it to the edge of a table or like support, the platform 10 being formed with raised side and rear edges 16 and 17 respectively and having a yoke 19 projecting from its front edge to receive and engage the nose of an iron placed on the platform, the extent to which the yoke projects being adjustable to suit irons of different lengths. Thus the yoke is formed with a tongue 20 having a slot 21 to receive a screw 22, and received at its lower end in a strap member 23. The screw 22 may have a plain head engaging across the edges of the slot 21, as seen in Fig. 1 and a spring 25 urges the yoke 19 into contact with the nose of the iron which is thus held against the rear edge 17 of the platform. Alternatively, the screw may be provided with a thumb-nut 24 (Fig. 2) which is tightened to lock the yoke 19 in any desired position. A clip 15 is loosely carried on the clamp screw 14 and serves to increase the clamping engagement with the table. A sheet of asbestos or the like covers the surface of the platform 10. The tongue 20 may be replaced by a doubled length of wire so bent as to form the slot between its members.
Patent GB-148139-A (GB)
Title: Process for the production of derivatives of condensation products of formaldehyde and phenols
IPC: C08G8/28
Filed: 1920-07-09
Abstract: The free phenolic groups of the resinous condensation products from phenols and formaldehyde are substituted by organic radicals, whereby the products become insoluble in alkali and their solubility in organic solvents is modified.  Examples are given of the preparation of p-toluenesulphonic and acetic esters by means of p-toluenesulphochloride and acetyl chloride respectively.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter:-The production of a benzoic ester by means of benzoyl chloride, a benzyl ether by means of benzyl chloride, a carbonic ester by means of phosgene, and mixed ether-esters by partial etherification by benzyl chloride, followed by esterification by benzoyl or acetyl chloride or phosgene.  The carbonic esters are insoluble in many organic solvents, and of high melting-point; they may be prepared in situ upon textiles, wood, paper &c. by treating with phosgene the material impregnated with alkaline solutions of the resins.  The production of alkyl ethers is also mentioned.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1438111-A (GB)
Title: Gas turbine jet engine
IPC: F02K1/38
Filed: 1972-05-01
Abstract: 1438111 Gas turbine jet engines - jet pipes BATEMAN MOULD & TOOLS Ltd 1 Aug 1973 [1 May 1972] 20080/72 Heading F1J The jet pipe of a gas turbine jet engine is formed with one or more peripheral openings spaced forwardly from the discharge end, there being an outer pipe which surrounds the jet pipe and defines therewith an annular passage into and along which a portion of the jet gases discharge through the opening or openings so as to discharge around the hot gas stream discharging from the jet pipe. The object of the invention is noise reduction. The jet pipe shown in Fig.1 is formed in two parts 1, 2 which are spaced apart to define a continuous peripheral opening 3 through which a portion of jet gases 4 discharge outwardly into the annular space 10 defined between the jet pipe and a surrounding outer pipe 5. Openings 6, 7 are formed in the outer pipe 5 for the inflow of ambient air which effects cooling of the gases flowing in the annular passage 10. Deflectors 8, 9 are associated with the openings 6, 7. The parts 1, 2 of the jet pipe may be movable axially so as to vary the width of the discharge opening 3. In Fig. 2 the jet pipe comprises parts 19, 20 which define an annular opening 21 therebetween. An outer pipe 23 is disposed around the jet pipe to define an annular passage 22 therebetween; an extension 24 of the engine casing is disposed around the outer pipe. Peripherally spaced openings are provided in the outer pipe 23 and casing extension 24, air deflecting plates 29, 30 being associated with the openings. Cooling airflow is indicated by arrows 25, 26.
Patent GB-153955-A (GB)
Title: An improved lace for folder files
IPC: B42F13/02
Filed: 1919-08-15
Abstract: 153,955. Moore, K. M., and Moore, Ltd., J. Aug. 15, 1919. Flexible-band files.-In a letter file &c., the binding-lace a is made of soft metal such as tin wire and is flattened intermediately to form a ribbon upon which the letters &c. are filed, the ends a<1>, a<2> of the lace being left unflattened to form round tags.
Patent GB-381947-A (GB)
Title: Manufacture of 6-bromo-2-hydroxy-3-naphthoic acid
IPC: C07C65/11
Filed: 1931-07-14
Abstract: 6-Bromo-2 : 3-oxynaphthoic acid is obtained by debrominating the 1 : 6-dibromo compound with reducing agents which act in an alkaline medium.  According to examples, the reduction is performed with sodium sulphite and sodium carbonate, or glucose and caustic soda.
Patent GB-375571-A (GB)
Title: Improvements in or relating to operation tables for medical and surgical purposes
IPC: A61G13/04
Filed: 1931-07-15
Abstract: 375,571. Operating tables. NEATHER. COAT, E. T., 50, Wigmore Street, London. July 15, 1931, No. 20270. [Class 52 (iii).] In a surgical operating table, the top of which is centrally pivoted, the inclination of the top is adjusted by a screwed connecting bar 4, round which is rotated, by means of bevel wheels 11, 8 and a hand-wheel, a nut 7, which imparts an axial movement to the rod 4. The parts are enclosed in a box 9 pivoted to the usual rising-and-falling pedestal. The threads of the screw on the bar 4 are preferably " buttress " threads.
Patent GB-260217-A (GB)
Title: Improvements in means for establishing communication with the interior of sunken submarines
IPC: B63G8/40
Filed: 1926-08-19
Abstract: 260,217. Chisling, E. L. Oct. 23, 1925, [Convention date]. Sunken ships, raising.-A device to enable communication to be established with the interior of a sunken submarine comprises a casing 4 which fits over an opening cut in one of the skin plates of the hull and is attached by bolts 6. The casing carries one or more pipes 26, 27 controlled by plug cocks 23, 24 and terminating in screwed ends to which external pipes terminating on the surface may be attached when a cover plate 9 provided with flanged edges 11 is removed by unscrewing a central bolt 16 which screws into a central post 14 on the casing. The pipes may be used as speaking tubes or for conveying liquid food, or air may be supplied through one pipe and exhausted through the other. The cover plate is provided with a removable plug 21 to equalize the water pressure inside and outside the casing and so facilitate the removal of the cover plate.
Patent GB-735564-A (GB)
Title: Improvements in synthetic resin binders for making foundry moulding mixtures and in such mixtures
Inventor: FALLOWS JOHN
IPC: C08L61/10
Filed: 1951-08-30
Abstract: A binder, for mixing with sand to form a moulding mixture for use in making casting moulds and/or cores, comprises by weight 79 to 91 per cent of hardenable phenol-formaldehyde resin and/or hardenable cresol-formaldehyde resin and 9 to 21 per cent of plumbago or terraflake or a mixture thereof, the ingredients being in a dry powdered state.  The resin constituent of the binder may be as low as 5 per cent of the total mixture of sand and binder, and generally should not exceed 10 per cent.  Hexamine may be used as the hardening agent.  Examples are given.
Patent GB-531228-A (GB)
Title: Air- and gas-tight wall and lead-through for electric wiring systems, particularly in high altitude aircraft
IPC: H01B17/30
Filed: 1939-07-14
Abstract: 531,228. Two-part couplings. WARREN, S. F. (Henschel Flugzeug-Werke Akt.-Ges.). July 14, 1939, No. 20573. [Class 38 (i)] An air-tight lead-through for coupling electric wiring systems on opposite sides of a partition 1 comprises a body 3 of elastic material such as rubber carrying contact elements 5 exposed on each side of the body which is compressed in a cavity formed in the partition or in a member 2 attached thereto. The body is compressed by a gland ring 8 screwing into the cavity, rigid plates 7, 9, Fig. 2, of insulating material being placed on opposite sides of the body 3. The counterpart members 10 fit against gaskets 12 to seal the joints and are held by clips 11. In a modification, Fig. 4, the body is compressed between flanges 13, a metal plate 14 being interposed to prevent torsion of the body when screwing up the ring 8. Interchangeable fittings 15 are screwed on to the member 2 to adapt the coupling for various counterparts 10.