baber/WOPTO huggingface dataset:
Patent GB-538869-A (GB)
Title: Improvements in light-sensitive diazo compounds
IPC: G03C1/54
Filed: 1940-01-11
Abstract: 538,869. N-Aminoaryl-substituted heterocyclic compounds. MURRAY, H. D.. and TYRRELL, A. Jan. 11, 1940, Nos. 597/40, 598/40 and 1883/41. [Class 2 (iii)] [Also in Group XX] A photographic diazotype layer contains a diazo compound derived from an amine of the general formula wherein X and Y each represent either a carbonyl group or a methylene group and X and Y are members of the same ring. X and Y may be both carbonyl groups as in N-(4-aminophenyl)-succinimide, N-(4-amino- 2: 5-diethoxyphenyl)-succinimide, N-(4-aminophenyl)-phthalimide, and N-(4-amino-2 : 5- diethoxyphenyl)-phthalimide; both methylene groups as in N-(4-aminophenyl)-morpholine and N-(4-aminophenyl)-piperidine ; or X may be carbonyl and Y methylane, as in N-(4- aminophenyl)-phthalimidine. The zinc and tin chloride double salts of the diazo compounds may be used. A sensitizing solution specified contains the zinc chloride double salt of diazotized N-(4-amino-2 : 5-diethoxyphenyl)- phthalimide. Specification 532,958 is referred to. N-( 4-amino-2 : 5-diethoxyphenyl)-phthalimide is prepared by adding phthalic anhydride to a solution of 2 : 5-diethoxyaniline in tetrahydronaphthalene and refluxing, nitrating and reducing the anilide obtained to give the anilic acid corresponding to the above compound, and heating this acid to 155‹ C. in an open dish. N-(4-aminophenyl)-morpholine and piperidine are prepared by refluxing together p-nitrochlorobenzene and morpholine or piperidine and reducing the nitro group. 2 : 5-Diethoxy-bromo- and -dibromo-benzene are prepared by brominating p-diethoxybenzene in glacial acetic acid and separating the products bv fractional distillation. 1-Bromo-2 : 5-diethoxy-4-nitrobenzene is prepared by nitrating 1-bromo-2 : 5-diethoxybenzene in glacial acetic acid. N-(4- Amino-2 : 5-diethoxyphenyl)-morpholine and -piperidine are prepared by refluxing morpholine or piperidine with 1-bromo-2 : 5- diethoxy-4-nitrobenzene and then reducing the nitro group. N-(4-Aminophenyl)-phthalamidine is prepared by nitrating N-phenylphthalamidine with potassium nitrate and concentrated sulphuric acid and reducing the nitro group. Specifications 282,894, [Class 98 (ii)], 347,430 and 425,235, [both in Group XX], also are referred to.
Patent GB-245788-A (GB)
Title: Improvements in and relating to permanent moulds for metal casting
IPC: B22C21/14
Filed: 1926-01-08
Abstract: 245,788. Will, E., (Assignee of Lee, H. S.). Jan. 8, 1925, [Convention date]. Moulds.-Cores 3 are centred in metal moulds 1, 2 by radial members which are adjustable, mechanically or thermally, to compensate for mould expansion. The members may comprise screws 16, or cylinders 10, Fig. 18, of a metal, such as aluminium having a higher coefficient of expansion than the iron or other material of the mould 2, or helical or leaf springs 15, Fig. 8, or 20, Fig. 9. The cylinders or springs may be adjusted or screwed by screws 16, Fig. 8, or 23, Fig. 9, or by pins 21, Fig. 18. In another modification, screws 13, Fig. 4, act on the inclined ends 12 of bolts 10. The screws are locked by nuts 14.
Patent GB-550793-A (GB)
Title: Improvements in or relating to tables
IPC: A47B3/10
Filed: 1942-01-15
Abstract: 550,793. Folding tables. HOWE FOLDING FURNITURE, Inc. Jan. 15, 1942, No. 628. Convention date, June 4, 1941. [Class 52 (iii)] A folding table (shown inverted) is provided with three diverging legs 10, 11, 23, the legs 10, 11 being pivoted adjacent the centre of one edge of the table top 15 and being braced by stays 44, 48, and the third leg 23 being pivoted centrally at the opposite edge of the table top so as to be foldable between the opposing legs. The stays 44 pivot in planes at right-angles to the table top and the stays 48 are collapsable. In the folded position, the legs 10, 11 lie obliquely against the table top. A bent member 33 connects the pivots of the legs 10, 11 so that the legs move together to and from the folded position. As shown, the legs support a container 16 suitable for carrying a portable picture projector. A cover 17 to enclose the folded legs is hinged to the container and, when opened out, is supported by a folding strut 21 to serve as a second table on shelf. The lid 66 of the container may be detached by disengaging its hinges and may then be inverted and placed on the top of the container for use as a tray. Specification 525,685 is referred to.
Patent GB-803156-A (GB)
Title: Bobbin-winder with thread-cutting device
IPC: D05B59/00
Filed: 1957-01-08
Abstract: 803,156. Sewing machine bobbin winders. SINGER MANUFACTURING CO. Jan. 8, 1957 [Feb. 9, 1956], No. 703/57. Class 112 In a sewing machine bobbin winder comprising an arm 43 which is pivoted at 42, a spindle 44, which is journalled in arm 43, is provided at one end with a driving wheel 46 and is adapted at the other end to receive a bobbin, and a two-armed latch member one arm 52 of which is pivoted at 54 and the other, and curved, arm 56 of which is adapted to engage the thread mass on the bobbin, the arrangement being such that when an end 57 of arm 52 is engaged with an end 58 of arm 43, wheel 46 is held in driving engagement with the machine handwheel, and when the diameter of the thread mass increases to the desired extent end 57 is disengaged from end 58 to permit spring means to move wheel 46 out of driving engagement, a thread-cutting notch 64 is formed in one edge of arm 56 at a position above the spindle 44, whereby, when the bobbin is removed from the latter, the thread can be engaged with notch 64 and severed thereby.
Patent GB-785706-A (GB)
Title: Improvements in or relating to sliding window construction
Inventor: HAUCK THEODORE
IPC: E05B65/08
Filed: 1954-07-30
Abstract: 785,706. Automatic catches. GENERAL BRONZE CORPORATION. July 30, 1954, No. 705/57. Divided out of 785,705. Drawings to Specification. Class 44 [Also in Group X] The subject-matter of this Specification is identical with that described in Specification 785,705 but the claims differ.
Patent GB-747174-A (GB)
Title: Arrangement for reserving selectors, lines or links in automatic signalling systems
Inventor: OBERMAN ROELOF MAARTEN MARIE
IPC: H04Q3/42
Filed: 1952-01-09
Abstract: 747,174. Automatic exchange systems. STAATSBEDRIJF DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. Jan. 9, 1952 [Jan. 22, 1951], No. 726/52. Class 40 (4). In an arrangement, Fig. 1, for preventing more calling circuits (REGISTERS) from hunting for outlets (SELECTING STAGES) in a group than there are free outlets in the group, a test conductor MS is provided for each group and is connected via busy contacts a in the outgoing circuits to resistances R1 connected to the negative pole of a battery. The conductor MS is also connected over a contact of a group determining switch such as 1 to resistances R2 which are grounded by contacts t of calling circuits when they are hunting. The trigger circuit B1, B2 only changes over provided the potential of MS is lower than a certain value and in doing so operates relay T to connect up an additional resistance R2 to earth and hence influence the potential of MS. The register disconnects R2 from the lead MS by means not shown when the wanted outlet has been seized, the corresponding resistor R1 being then disconnected by a busy contact a. In order to ensure that relay T does not chatter if it belongs to the last register permitted to hunt, a holding winding of T is included in series with R2. In an all-electronic embodiment of the test equipment, Fig. 2, when the potential of MS is below that of the mid-point of resistors R4, R5 the trigger B1, B2 changes over. The rise in anode potential of B1 causes B3 to conduct, thereby depressing the grid potential of B1 to lock the trigger in this position. Connection of earth through R2 to the test lead MS is effected by the grid current of B3. The arrangement is applicable to the exchange described in Specification 747,173 in which a switch in the register hunts for a free outlet in a wanted direction, whilst simultaneously testing for a free path to said outlet via a number of switches in tandem.
Patent GB-1139502-A (GB)
Title: Lined container
Inventor: SALWAY BRIAN
IPC: B65D75/52
Filed: 1965-01-07
Abstract: 1,139,502. Lined carton. E. S. & A. ROBINSON (HOLDINGS) Ltd. 6 April, 1966 [7 Jan., 1965], No. 728/65. Heading B8P. A lined rectangular carton comprises a flexible inner part, e.g. a rectangular pouch 1, having its front, back and sides only encased in two blanks A, B of which the side portions 4, 6 overlap and are adhered together when the carton is erected. The carton may be manufactured as follows. The pouch 1 is adhered to blank B, the pouch extending laterally between the folds c with its top and bottom extending beyond the blank. Blank B is then folded at c and the remaining parts thereof adhered to the pouch. Blank A is then superposed so that panel 3 overlies pane] 5 and is adhered to the tabs 7 and the part of pouch therebetween. The carton can be stored in this form. To erect the carton from this flat form, folds c are pressed towards one another. The pouch can then be filled, closed and sealed, the top and bottom of the pouch forming ears 9 which are folded over the side panels 6, see Fig. 5. The side panels 4 of blank A are then folded at a and adhered to the panels 6 trapping the ears 9.
Patent GB-449960-A (GB)
Title: Improvements in means for keeping cut flowers and the like fresh
Filed: 1935-01-09
Abstract: To keep cut flowers or like materials fresh there is added to the water in which they are kept a nutrient such as cane sugar, glucose, levulose, and other sugars, together with a substance preventing putrefaction consisting of an organic nitrogen compound in which at least one aliphatic hydrocarbon radicle containing at least 4 and preferably 10-18 carbon atoms is attached to nitrogen.  The nitrogen compounds used include aliphatic amines and their substitution products, and ammonium bases which contain besides a higher molecular aliphatic hydrocarbon radicle attached to the nitrogen also alkyl, aryl or aralkyl substituents.  These compounds may be used as such or in the form of salts with hydrochloric or acetic acid or other inorganic or organic acids. The compounds may be used in admixture with each other or with metals or metal salts, e.g. a complex salt containing an amine and silver, or with other substances having an antiseptic action, e.g. formaldehyde or its polymerization products or hydrogen peroxide. The nitrogen compounds used include dodecylamine hydrochloride, dodecylisopropylamine, dodecylguanidine hydrobromide, dodecylbiguanide, dimethylbenzyldodecylammonium chloride and dimethyldodecyltrichlorobenzylammonium chloride. Specifications 369,614 and 436,793, [both in Group IV], are referred to.
Patent GB-574982-A (GB)
Title: Improvements in aerodrome ground lighting
IPC: B64F1/20
Filed: 1944-01-14
Abstract: 574,982. Luminairs for aerodromes. HOLOPHANE, Ltd., and ENGLISH, S. Jan. 14, 1944, No. 769. [Classes 75 (ii) and 75 (iv)] A luminair for aerodrome one-way landing strips comprises a low-lying substantially flattopped housing having an annular wall fitted with a window or refractor by which light from an electric lamp is concentrated into a beam of small elevation and vertical divergence and having an azimuthal distribution of 180 degrees or less, its greatest intensity being opposite to the direction of landing. Figs. 1 and 2 show a lighting unit comprising a pot-like container 1 to be set at the edge of the runway with its flange 2 flush with the ground, a concentrated filament electric lamp 3, an outer conical refractor 5 secured on a rubber gasket 6 to the flange 2 by a ring 7, an inner refractor 14 secured to container by clips 15, a brass cap 11 resting on a rubber gasket 12 above the refractor 5 and secured to the container by bolts 13, and a reflector 4 for redirecting upwardly the downward rays from the lamp 3. The refractor 14 is formed on its inner surface with vertical prisms 17 of varying size concentrating the rays from the lamp 3 into a beam of 270 degrees divergence horizontally and on its outer surface with annular prisms 19 and a toroidal surface 20 concentrating the beam vertically. The refractor 5 is formed on its inner surface with prisms 22 of varying size concentrating the 270 degrees beam into a beam of 180degrees or less angle horizontally. The outer surface of the refractor 5 may be parallel or converge upwardly towards the inner surface or may be part spherical as shown in Fig. 2 of Specification 566,720. Fig. 3 shows a tubular incandescent or discharge lamp 24 arranged in a trough reflector 25, of elliptical section to direct the light through a window 29 in the direction of the landing strip. The reflector is adjustable about its pivot 26 by a screw 28. The reflector 25 may be constructed as described in Specification 567,568. Figs. 4 and 5 (not shown) illustrate two reflectors preferably elliptical in vertical section and parabolic in horizontal section fitted with concentrated light sources and mounted back to back in a casing fitted with windows which are straight in horizontal planes and at right angles to the beam axis. The windows may have curved or concave inner faces according to the focal length of the reflectors. Either lamp may be switched on according to the direction of landing. Specification 561,541 also is referred to.
Patent GB-678620-A (GB)
Title: Improvements in electric motors
Inventor: ROSE WILLIAM ROBERT
IPC: H02K1/17
Filed: 1950-01-12
Abstract: 678,620. Machines with permanent magnets METTOY CO., Ltd. April 10, 1951 [Jan. 12, 1950], No. 809/50. Class 35. A toy motor has a fixed cylindrical permanent magnet 1 which is so magnetized longitudinally that it has a pair of opposite poles at one end and a pair of opposite poles at the other end, but reversed with respect to the first poles. The rotor core consists of three iron elements 6 which carry coils accommodated between two discs 9, 10 of which 10 is magnetic and the whole assembly is locked by a nut 11 on a shaft 5 against a shoulder 12 provided thereon. The magnet 1 is fitted at one end with a plug 2 of non-magnetic material having a central hole in which is fitted a screw 3 pressing against a ball bearing 4. With this construction, the air gap of the magnetic circuit can be adjusted to fine limits.
Patent GB-141139-A (GB)
Title: Improvements in or relating to gyroscopes
IPC: G01C19/00
Filed: 1919-01-11
Abstract: 141,139. Harding, W. G. Jan. 11, 1919. Gyroscopic apparatus.-In order to damp or retard the precession of a gyro wheel or member, an auxiliary gyro-member is provided in concentric relation with, but not rigidly attached to, the main member, the auxiliary member being adapted to rotate in the same direction, but not necessarily at the same speed, as the main member. In the form shown in Fig. 1, the auxiliary gyro-wheel 3 is mounted within the main gyrowheel 1 on a spherical boss 5 on the driving-shaft 2, and is connected to the shaft by helical springs 6. In a modification, the wheel 3 is connected to the wheel 1 by leaf springs, while, in a further modification, it is attached to the shaft by means of an elastic diaphragm. In the form shown in Fig. 4, the auxiliary member comprises a quantity of mercury &c. 12 rotating within the wheel 1. In a further modification, the auxiliary member consists of a number of rollers floating in forks on a frame mounted on a spherical boss on the shaft 2, the forks being adapted to exert pressure against the interior of the wheel 1.
Patent GB-1151281-A (GB)
Title: Process for the Preparation of Benzene Carboxylic Acids
IPC: C07C63/00
Filed: 1967-01-06
Abstract: 1,151,281. Benzene carboxylic acids. MOBIL OIL CORP. 6 Jan., 1967 [18 Jan., 1966], No. 868/67. Heading C2C. The invention relates to a process for the preparation of a benzene carboxylic acid which comprises providing a solution of a methyl substituted benzene compound, e.g. p- or m-xylene in a fatty acid having 2 to 4 carbon atoms, e.g. acetic acid, the solution containing from about 2% to about 25% of a methylsubstituted benzene compound by weight of the fatty acid, an initial content of from about 0À5% to about 10% by weight of water, and a cobalt salt of a fatty acid having 2 to 4 carbon atoms, e.g. cobalt acetate tetrahydrate in an amount corresponding to about 0À1% to about 1À5% cobalt by weight of a fatty acid, and contacting the solution at a temperature in the range of at least about 100 to about 145 C. with a gas containing molecular oxygen at a partial pressure of oxygen of about 50 to about 1000 lbs. per sq. in. and in the presence of a saturated aliphatic hydrocarbon containing from 4 to 6 carbon atoms, e.g. n-butane or 3-methyl-pentane. The reaction mixture may also contain an oxidation promoter such as a methylenic ketone or 2-butanol. A substantial proportion of the saturated aliphatic hydrocarbon may be oxidized to produce a fatty acid having 2 to 4 carbon atoms which is used in the process.
Patent GB-792387-A (GB)
Title: Microwave transducer
IPC: H01P1/17
Filed: 1956-01-10
Abstract: 792,387. Waveguide accessories. HUGHES AIRCRAFT CO. Jan. 10, 1956 [Jan. 28, 1955], No. 876/56. Class 40 (8). [Also in Group XL (c)] Apparatus for controlling the ellipticity of polarized microwave energy comprises an axially symmetrical waveguide 10 within which are mounted a Faraday element 12 for producing a non-reciprocal rotation of planepolarized energy and a quarter-wave dielectric plate 16 for producing a 90 degree phase-shift between orthogonal components of the plane polarized wave. The element 12 consists of a cylindrical slug of ferromagnetic ceramic, e.g. ferrite, and is supported by dielectric members 13, 14 within the axial magnetic field of a solenoid 18. The element produces a Faradayeffect rotation of the plane of polarization of a plane-polarized H 01  wave propagated in the guide, the magnitude of the rotation being dependent upon the strength of the axial magnetic field and the absolute sense of the rotation being independent of the direction of propagation. For energy propagated from left to right the magnetic field can be used to vary the angle between the plane of polarization and the plane of the quarter-wave dielectric plate 16. The plate produces a 90-degree phase-shift between the components of the plane-polarized wave resolved in the plane of the plate and at right-angles thereto. The output wave is thus elliptically polarized, the ellipticity being dependent upon the relative amplitudes of the orthogonal components of the plane wave and hence, ultimately, upon the strength of the magnetic field. The apparatus may be used as a polarization analyser, energy to be analysed being fed from right to left. The apparatus may form part of the common transmit-receive channel of a pulsed radar set, the plate 16 being arranged parallel to the direction of polarization of the unrotated input pulse. By taking into account the reversal in the rotatory sense of polarization due to reflection and the fact that the signal traverses the quarter-wave plate twice, it may be deduced that the total angular difference between the planes of polarization of the transmitted and received pulses at the left-hand edge of the plate is (180-20) degrees, where # degree is the rotation of the Faraday element. In traversing this element the pulse is rotated through # degree in the same absolute sense both on transmission and reception. The result is that the echo pulse has at the input end of the guide 10 a plane of polarization displaced 180 degrees from that of the transmitted pulse, i.e. the planes of polarization are parallel. The Specification describes a construction in which the phase shifter is orientated to make an angle of 45 degrees with the plane of polarization of the incident wave. A magnetic field in the Faraday element producing a 90 degree rotation in the incident wave will result in circular polarization.
Patent GB-1172397-A (GB)
Title: Drill Bushings
Inventor: MELE JOSEPH J
IPC: B23B49/02
Filed: 1967-01-06
Abstract: 1,172,397. Drill bushes. J. J. MELE. 6 Jan., 1967, No. 885/67. Heading B3C. A liner bush comprises a body 10 and a clip having arms 15, which clip into a groove 13 on the body. A lip 18 on the clip engages in a recess, formed in a slip bush, so as to secure the latter. A slip bush, Figs. 6-9 (not shown), is described.
Patent GB-184420-A (GB)
Title: An improved foot propelled water craft
IPC: B63H16/20
Filed: 1922-01-11
Abstract: 184,420. Mossop, W., and Cooper, J. D. Jan. 11, 1922. Propelling and steering water velocipedes.- Relates to means for propelling and steering water-craft of the kind comprising two parallel floats F connected by a frame B upon which is mounted a cycle-like framework C having a seat for the operator and handle bars, a propeller on an inclined shaft being driven by the feet of the operator from the bottom bracket of the bicyclelike frame. The invention consists in (a) attaching the rudder 15 directly to an extension of the handle bar standard, (b) driving the propeller shaft 13 by a bevel 9<a> gearing with a bevel 12 mounted on the bottom bracket.
Patent GB-671539-A (GB)
Title: Improvements in a gas turbine plant operating on the open system, for delivering a large useful power of short duration
IPC: F02C6/16
Filed: 1950-01-13
Abstract: 671,539. Gas turbine plant. SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTROM. Jan. 13, 1950 [Jan. 19, 1949], No. 926/50. Class 110 (iii) An open circuit gas turbine plant comprising a turbine 15, Fig. 1, a combustion chamber 11 or recuperator and a compressor unit 2 separately driven independently of the turbine has one or more accumulators for storing air supplied by the compressor unit which is admitted to the turbine according to need. Each accumulator consists of a chamber 8 connected at its lower portion through a channel 10 with a body of water 9, the level of which is comparatively high as compared with the change of level of the water in the accumulator, and at its top with the compressor and turbine. The compressor unit 2 is driven by an electric motor 1 and during air charging periods the valves 4 and 6 are open and the valve 5 closed. When air is withdrawn from the accumulator, valves 5 and 6 are opened and valve 4 may be open or closed depending on whether the compressor unit 2 is in operation. Liquid fuel is supplied to the combustion chamber by a pump 12. Valves 5 and fuel supply valves 14 are controlled by a speed governor 18. In a modification, two accumulators are provided. The second accumulator is used to store combustible gas supplied by a compressor driven by an electric motor. In. another embodiment water is sprayed into the combustion chamber and the amount of water injected is controlled by the speed governor 18. In a further embodiment, Fig. 4, the combustion chamber 11 is replaced by a recuperator 27. The heat resistant material 28 of high heat capacity is heated by combustion gases from a combustion chamber 30 in which a liquid or solid fuel may be burnt. These gases leave the chamber 30 through a conduit 33. When the recuperator is supplying heat to the air from the compressor the valves 29 and 34 are closed and the valve 5 opened. The temperature of the gases supplied to the' turbine is controlled by a thermostat which actuates a valve 26 regulating the amount of water sprayed into the recuperator.