baber/WOPTO huggingface dataset:
Patent GB-494518-A (GB)
Title: Improvements in or relating to means for sealing or stopping metal pump fittings forvacuum tubes
IPC: H01J9/40
Filed: 1937-04-26
Abstract: 494,518. Soldering parts of vacuum tubes. SIEMENS & HALSKE AKT.-GES. April 26, 1937, No. 11909. Convention date, April 27, 1936. [Classes 83 (ii) and 83 (iv)] Metal tubes serving as pump connections in evacuating electric discharge tubes particularly of the type in which one of the electrodes forms part of the envelope of the vessel, are stopped or sealed by forming a constriction in the tube, inserting an apertured pellet of solder which rests on the constriction and subsequently melting the solder to form the stopping. The constriction may consist of a shoulder 3 in the tube 1 or may be made by locally compressing or pinching the tube. The solder pellet 4 may be of spherical or other form with a central aperture 5 of the same cross-section as the lower part of the tube. The tube may be externally marked to assist in applying the electrodes at the solder location or the shoulder may be made at a standard distance from the container 2 for the same purpose. Specification 369,348, [Group XL], is referred to.
Patent GB-585833-A (GB)
Title: Alkamine esters of pyrrole-2, 4-dicarboxylic acids
IPC: C07D207/34
Filed: 1944-06-22
Abstract: Pyrrole derivatives of the general formula <FORM:0585833/IV/1> where R may be hydrogen or methyl and X is dialkylaminoalkyl are made by heating the corresponding dialkyl ester with a dialkylamino alcohol in the presence of an alkali metal alcoholate.  In the examples, diethyl-2.4-dimethylpyrrole-3.5-dicarboxylate is heated with b -diethylaminoethanol or g -diethylaminopropanol in which sodium has been dissolved to give di-(b -diethylaminoethyl or g -diethylaminopropyl)-2.4-dimethylpyrrole-3.5-dicarboxylate. Sodium may be replaced by potassium and the alcoholate may be preformed. Salts of the products may be made with hydrochloric acid or other strong acids.  The compounds in the form of their salts are useful as local an sthetics and in the form of the free bases as activators for rubber accelerators.  The alkyl ester starting materials are preferably prepared by reacting esters of ketoacetic acids with sodium nitrite in acetic acid followed by reduction of the a -nitroso compound with zinc and condensation of the resulting a -amino-ketoacetic acid ester with additional ketoacetic acid ester to give the pyrrole di-ester.  3 : 5-Dimethylpyrrole-2 : 4-dicarboxylic acid is prepared in this manner from acetoacetic ester.
Patent GB-714963-A (GB)
Title: Improvements in and relating to plate heat exchangers
IPC: F28F3/02
Filed: 1952-05-12
Abstract: 714,963. Plate heat-exchangers. AIR PREHEATER CORPORATION. May 12, 1952 [June 4, 1951], No. 11989/52. Class 64(3) In a plate heat-exchanger, a pluralty of fin elements 14 are mounted between fluid passage walls 10, 11, each element comprising a metallic strip formed with pairs of marginal tabs 20, 21 extending from. opposite sides of a web portion 18, and each tab being in contact with one orother of the walls 10, 11. In the preferred form, the tabs 20, 21, see Fig. 2, are formed with flanges 22 which are bonded to the walls 10, 11, and the edges 23 of the flanges of one element are in contact with corresponding flanges on an adjacent element on assembly. The web portion 18 of the element may be interrupted to avoid the formation of a laminar boundary layer along its surfaces.
Patent GB-986421-A (GB)
Title: Improvements in or relating to light-sensitive probes
IPC: F23N5/08
Filed: 1961-04-04
Abstract: 986,421. Heat & flame sensing devices. M. CLAUSEN, [trading as DANFOSS VED, ING M. CLAUSEN]. April 4 1961 [March 31, 1960], No. 12052/61. Headings G1A. [Also in Division H1] A light-sensitive probe for a flame-detection system includes a thermally sensitive layer located between a photo-resistor and the flame for controlling the intensity of illumination incident on the detector. The arrangement is utilized to protect systems in which the increase in dark current due to a rise in temperature may erroneously give a flame present indication. As shown in Fig. 1, the casing of a photo-resistor 1 connected by wires 2 to a control circuit has an aperture 5 receiving light from a flame 3 via a filter 6 carried by a plate 7. The filter 6 is of a material such as Cu 2  Hg I 4  whose translucence is reduced by an increase in its temperature. The filter 6 may be replaced by, or combined with, a filter of which the spectral range is displaced from the most sensitive range of the detector with increase of temperature. In a modification, Fig. 2 (not shown), the photo-resistor is enclosed in a casing having its wall surfaces which are subjected to the incident light coated with a substance having decreasing translucence with increase in temperature.
Patent GB-615252-A (GB)
Title: Pyrylium dye salts as filter and anti-halation dyes in photographic materials
IPC: G03C1/83
Filed: 1946-04-23
Abstract: 7 - Hydroxy - 41 - methoxy - 2 - phenylbenzopyrylium chloride is prepared by reacting together 4-methoxyacetophenone and 2 : 4-di-hydroxybenzaldehyde in methanol saturated with HCl.  4 : 6 - Diphenyl - 2 - methylpyrylium sulpho - acetate is prepared by heating together acetophenone and sulphoacetic acid (from acetic anhydride and sulphuric acid).ALSO:Pyrylium dyes of the general formula <FORM:0615252/IV (c)/1> or <FORM:0615252/IV (c)/2> wherein R1 is H or an alkyl or aryl group, R2 is aryl, Z represents the atoms necessary to complete a pyrylium, benzopyrylium or naphthopyrylium ring, X is an anion, and n is 1 or 2 are prepared by reacting the corresponding pyrylium salt having a reactive methy-group with an aromatic aldehyde (e.g. benzaldehyde, or p-dimethylamino-p-diethylamino-, p-hydroxy-, p-methoxy, 2 : 4-dihydroxy-, 3 : 4-methylenedioxy-, or 3 - methoxy - 4 - hydroxybenzaldehyde, or cinnamaldehyde or p-dimethylaminocinnamaldehyde).  4 - (41 - Dimethylaminostyryl) - 7 - hydroxy-2 - phenylbenzopyrylium chloride is prepared by refluxing together 7 - hydroxy - 4 - methyl - 2-phenylbenzopyrylium chloride, p-dimethylaminobenzaldehyde, acetic acid, and acetic anhydride. 7 - Hydroxy - 4 - (41 - hydroxystyryl) - 2 - phenylbenzopyrylium chloride, 41-dimethylamino - 4 - styryl - 2 - phenyl - 7 - methoxybenzopyrylium chloride, 2 : 4 - diphenyl - 41-dimethylamino - 6 - styrylpyrylium sulphoacetate, 2 : 4 - dianisyl - 41 - dimethylamino - 6-styrylpyrylium sulphoacetate, 2 : 4 - diphenyl-41 - diethylamino - 6 - styrylpyrilium sulphoacetate, 7 - hydroxy - 41 - methoxy - 4 - styryl - 2-phenylbenzopyrylium acetate, 2 - (phenylbutadienyl) - 4 - 6 - diphenylpyrylium sulphoacetate, and 4 - (p - dimethylaminophenylbutadienyl) - 7-hydroxy - 2 - phenylbenzopyrylium chloride are similarly prepared.  The dyes may also be prepared by condensing an intermediate such as o-hydroxybenzalacetone with an aromatic aldehyde such as a substituted benzaldehyde or 2-naphthol-1-aldehyde.  21 : 41 - Dihydroxy - 2 - styrylbenzopyrylium chloride is prepared by reacting together o-hydroxybenzalacetone and 2 : 4 - dihydroxybenzaldehyde in formic acid saturated with HCl. 41 - Hydroxy - 2 - styrylbenzopyrylium chloride and acetate, 31 : 41-methylenedioxy-2-styrylbenzopyrylium chloride, 41 - methoxy - 2-styrylbenzopyrylium chloride, and 41 - hydroxy-31 - methoxy - 2 - styrylbenzopyrylium acetate are similarly prepared.  The Specification as open to inspection under Sect. 91 refers also to the replacement of the aldehyde used in the preparation of the dyes by cyanine dye intermediates such as 2-(b -acetanilidovinyl) - benzthiazole ethiodide, 2-formylmethine - 1 : 3 : 3 - 8ndoline ethyl orthoformate, and b -ethoxyacrolein diethyl acetal.  This subject-matter does not appear in the Specification as accepted.
Patent GB-487625-A (GB)
Title: Improvements in or relating to iron or steel cubicles or compartments for containingalternating current electrical apparatus
IPC: H02B11/26
Filed: 1937-04-29
Abstract: 487,625. Switchgear structures. GENERAL ELECTRIC CO., Ltd., MAER, C. A., and WILSON, W. April 29, 1937, No. 12238. [Class 38 (v)] In order to prevent the heating, by induced currents &c., of iron or steel walls or doors 8 of cubicles or compartments containing A.C. apparatus, such as conductors 7, carrying heavy currents at voltages up to 11 kv., the cubicle or compartment is provided adjacent the wall or door with a low-resistance electric circuit or conducting member adapted to carry the major part of the induced current, or the wall or door is associated with means constituted by such circuit or conducting member in such manner that shielding of the wall or door is obtained. The circuit or member may comprise a bar, sheet, or ring of low resistance material adjacent the wall or door, and the cubicle may be ventilated to carry away radiated and converted heat from the apparatus. In the drawing, the cubicle comprises stonework barriers 6, a channel-steel base 1 and members 3, a steel angle-member 2, and sheet steel-doors 8, which are secured by fastenings 9 to channel-shaped uprights 4 which with the angled cross-members 5, are of aluminium. The low-resistance circuit formed by uprights 4 and member 5 and in part by 2, carries the major part of the induced current and reduces hysteresis and eddy-current losses and hence the heating in the doors.
Patent GB-513927-A (GB)
Title: Improvements in and relating to latch locks
IPC: E05B17/20
Filed: 1938-04-23
Abstract: 513,927. Latches. MURRAY, A. B. April 23, 1938, No. 12265. [Class 44] To prevent forcing back a latch'bolt by an implement inserted through the gap 18 between the edge of a door and its frame 19, a groove 15 is provided across a face of the bolt other than the inclined striking surface 14. The side of the groove remote from the bolt end slopes gradually and may extend into the lock casing. The other side of the groove is steep, and may be undercut so that the inserted implement enters the groove and urges the bolt towards shot position. As shown, the end 14 is more steeply inclined than usual, and the striking surface 16 of the staple 12 is so inclined and extended as to provide the necessary cam action. With suitable surface 16, the bolt end may be at right-angles to the other faces. A modification is described in which the bolt end is further out of the case than usual, the surface 16 of the keeper being correspondingly set back from free edge of the post 19.
Patent GB-1169143-A (GB)
Title: Improvements in or relating to Milk Foodstuffs
IPC: C12N9/00
Filed: 1968-03-13
Abstract: 1,169,143. Dairy flavour. K Y O W A HAKKO KOGYO K.K. 13 March, 1968 [14 March, 1967], No. 12267/68. Heading A2B. [Also in Divisions C3 and C5] An enzyme obtained from a microorganism (see Division C3) is used to enhance the dairy flavour of foodstuffs. In examples it is used to ripen green cheese, to make sweet cream butter, and to treat milk used in making chocolate, cake and baby foods.
Patent GB-217393-A (GB)
Title: Improvements in the cups of vacuum flasks
IPC: A47J41/00
Filed: 1923-05-08
Abstract: 217,393. Jones, H. N. May 8, 1923. Drinking-vessels. - Cups for vacuum flasks are formed on the outside and also the inside of the lip portion of heat-insulating material. The cup may consist of a metal liner MC coated on the outside and around the lip L with a covering IM of vulcanite, artificial resin &c. In a modification, the cup is made entirelv of such material.
Patent GB-400655-A (GB)
Title: Improvements in holders for stair carpets
IPC: A47G27/06
Filed: 1932-04-29
Abstract: 400,655. Stair-carpet fasteners. SMITH & DAVIS, Ltd. and SMITH, H. F., Hampton Street, Birmingham. April 29, 1932, No. 12314. [Class 52 (v).] In stair-carpet holders of the kind comprising a bracket for attachment to the stair and a slide having a pair of parallel arms both extending in the same direction, one of the arms slidably engaging the bracket while the other engages over the edge of the carpet, the slide and bracket are connected to prevent normal separation by a pin on one member engaging a slot in the other member. The bracket 10 has grooves 12 for the arm 13 of the slide, holes 16 for attachment screws and a longitudinal slot 17 closed at its ends. In this slot is mounted a pin 18 having a head 19 larger than the width of the slot. To enable the screws to be passed through the holes 16, apertures 20 are provided in the arm 13 capable of registering with the holes 16. The stair may be recessed for the head 19 or, as shown in Fig. 3A, the parts may be formed convex. Fig. 4 shows a pin 21 carried by the bracket and a slot 22 formed in the slide, with enlargements 24 to register with the fixing holes 23. The pin may be replaced by a screw so as to be removable, or by a part pressed-up from one portion of the holder. Specifications 285,713, [Class 52 (v), Window, stair, and like furniture &c.], 364,549, 364,555, 373,826, and 400,656 are referred to.
Patent GB-1332940-A (GB)
Title: Feeding arrangement for pieces of washing
IPC: D06F67/04
Filed: 1973-03-14
Abstract: 1332940 Feeding ironing machines E & E PETERS GmbH 20 Nov 1970 [20 Nov 1969] 12357/73 Divided out of 1332939 Heading D1A The subject-matter of this Specification is the same as that described in Specification 1332939 but the claims relate to the provision of a multiple belt feed conveyor which is divided into a plurality of sections 16a, 16b which may be operated together in unison or separately in parallel and intermittently. The inner brush belts 9b, 9c (Fig. 5) for spreading articles transversely of the conveyor are selectively reversible for single or multi-track working. (For Figures see next page)
Patent GB-541769-A (GB)
Title: Improvements in two-way transmission systems
IPC: H04B3/20
Filed: 1940-07-31
Abstract: 541,769. Loud-speaker substations. ASSOCIATED ELECTRIC LABORATORIES, Inc. July 31, 1940. No. 12373. Convention date, Aug. 14, 1939. [Class 40 (iv)] To prevent singing and side tone while allowing breaking-in, both paths in a loud-speaker substation are normally partially operative, speech in either direction increasing the efficiency of its own path and decreasing that of the other with the aid of a biassing arrangement acting oppositely on the transmission path amplifiers 18, 24. This includes a pair of triodes 30, 31 which may be in the same envelope as shown and the grids of which are normally biassed to a point approaching anode-current cut off and are connected to receive signal voltages from the respective transmission paths. Anode current is supplied through the respective series arms 43, 44 and the shunt arm 41 of a T-network. The signal amplifiers are biassed by the voltage drop between a tapping point 42 on the shunt arm and the outer end of the respective series arms. When speech occurs in one of the paths, it causes a reduction in the impedance and an increase in the anode current of the corresponding valve 30, 31. The resulting increase of current in one of the series arms and reduction of current on the other modifies the bias of the signal amplifiers in the required direction. The effect is adjusted by varying the proportion of the common resistance 42 in the biassing circuits. Additional resistances 45, 46 modify the effect by reducing the change in bias caused by a given change in the impedance of a control valve. Condensers 48, 49 provide a suitable hang-over time.
Patent GB-568304-A (GB)
Title: Improvements in and relating to fluid tight joints for pipes and the like
Inventor: AVEBURY JOHN LUBBOCK LORD
IPC: F16L17/04
Filed: 1943-07-30
Abstract: 568,304. Pipe joints. AVEBURY, J. LUBBOCK, LORD. July 30, 1943, Nos. 12434 and 16854. [Class 99 (i)] A pipe joint comprises a sleeve 3 of elastic material which is normally of smaller diameter than the pipes 1, 2, an expander 4 of larger diameter than the pipes and adapted to be inserted within the sleeve, and a casing 5 surrounding the sleeve and expander. The sleeve ends 7 grip the pipes, may be tapered and may be turned in as shown or extend outwardly beyond the casing. The ends of the casing are turned inwards leaving openings 6 larger than the pipes by less than twice the thickness of the sleeve. The ends of the expander may also be turned in. The casing may have conical ends and may comprise wire braiding with end caps. The expander may be split longitudinally to facilitate insertion or may be in the form of a coiled spring. An additional sleeve 11, Fig. 12, stretched over the casing 5 may be employed and is covered by a casing 15. The pipes may be secured by spring arms 12 secured to the casing 5 or 15, the pipe passing through an opening 14 in the arm having a sharp edge for gripping the pipe. In another form, a number of flat springs secured to and extending from the casing 5 have their ends 6, Fig. 2, turned back towards the casing, engaging the pipes to prevent withdrawal. A rigid cap or clip 7 forms a fulcrum for the spring. A ferrule 8 secured loosely in the cap 7 is used for disengaging the spring arm.
Patent GB-1170245-A (GB)
Title: Method for the Manufacture of Hemispherically-Shaped Articles from Sheet Material.
Inventor: JONES-HINTON JAMES
IPC: B29C51/06
Filed: 1966-03-22
Abstract: 1,170,245. Sheet forming. DUNLOP CO. Ltd. 14 March, 1967 [22 March, 1966], No. 12455/66. Heading B5A. Hemispheres, for use in the subsequent production of table-tennis balls, are formed from a heat softened thermoplastic sheet 10 by first partially sucking the sheet into hemispherical cavities 32 and then subsequently fully forming the sheet by means of hemispherical plugs 20. In a first alternative, the radius of the cavities 32 correspond exactly to the desired outer radius of the hemispheres to be produced, and the radius of the plugs 20 correspond exactly to the internal radius. Upon advance of the plugs into the cavities the sheet is thus effectively drawn between matched dies. In a second alternative, the radius of the cavities 32 are larger than the external radius of the desired hemispheres and the radius of the plugs once again correspond exactly to the internal radius. In this case, the sheet is sucked into the plugs upon full penetration into the cavities.
Patent GB-201638-A (GB)
Title: Improvements in electric lighting fittings
IPC: F21S13/00
Filed: 1922-05-03
Abstract: 201,638. Fletcher, F. P. May 3, 1922. S h a d e s ; reflectors; shade holders.- An electric-lamp shade is formed of a plurality of superimposed conical screens c with their smaller ends upwards, and one or more reflectors supported above these screens so as to reflect the upwardlydirected rays downwards and outwards, either on the outer surface of the top screen, or on the area to be, illuminated, so that direct rays from the lamp bulb d, which is partially frosted, cannot come into contact with the eye. The screens c are attached to vertical members a supported from a ring b secured to the lamp socket e, and may be made of cardboard, papier-mßchÚ, metal, &c. A reflector f is supported within the vertical members a above the top screen e, and a further reflector g may be supported above and outside the fitting. The inner and outer surfaces of the screens are preferably given a matt finish and these as well as the lower frosted portion of the lamp-bulb d, may bs tinted.
Patent GB-665349-A (GB)
Title: Improvements relating to colour photography
IPC: G03C7/18
Filed: 1948-05-06
Abstract: 665,349. Colour photography. GANGUIN, K. O. March 9, 1949 [May 6, 1948], No. 12483/48. Class 98 (ii). A subtractively coloured negative incorporating black and white colour correction printing masks is made by exposing a multilayer film having silver halide layers sensitive to the blue, green and red regions of the spectrum and containing, respectively, yellow, magenta and blue-green colour formers to a coloured object, colour developing, bleaching out the silver, re-exposing as to normal room illumination, and re-developing in a black-andwhite developer containing from 0.425 up to 5 grams of a water-soluble iodide per litre of developer solution. The iodide has a retarding action on the black-and-white development which is exerted mainly in the top layer, 0.425 to 1 gram of iodide per litre generally leading to development, of masks in the magenta and blue-green image layers and higher concentrations to development of masks in the latter layer only. Developers exemplified and listed, apart from the iodide content, are of conventional type. Mask production by making use of the difference in sensitivity between developed and then bleached silver halide and the normally ripened residual silver halide is mentioned. Specification 541,266 is referred to.
Patent GB-1043724-A (GB)
Title: Machine for feeding and/or mixing or blending loose materials
IPC: B01F29/62
Filed: 1963-03-29
Abstract: 1,043,724. Screw conveyers. PATTERSON KELLEY CO. Inc. March 29, 1963 [April 10, 1962], No. 12493/63. Heading B8A. [Also in Division B1] A screw conveyer formed of interconnected straight tubular zig-zag sections 22 with a material receiving drum at the inlet end is mounted for radiation on an axis CL whose inclination to the horizontal is adjustable, the rotational speed also being adjustable to control the rate of discharge. The axes of the sections 22 may be coplanar or in different planes and the intersections between the sections may be sharp or rounded.
Patent GB-129618-A (GB)
Title: Improvements in or relating to the Cooling of Internal Combustion Engines.
Inventor: SHERMAN THOMAS LOUIS
IPC: F01P9/00
Filed: 1919-05-19
Abstract: 129,618. Sherman, T. L. May 19, 1919. Cylinders, cooling. - Between the combustion chamber or other heated part of an engine and its air-cooled jackets are shallow cavities which are filled or partly filled with a fusible metal or alloy, so as to preserve metalic contact between the parts. The surface of one of the parts may be roughened, as shown at 13.
Patent GB-1499742-A (GB)
Title: Interface adaptor circuits in combination with a processo
IPC: G06F13/12
Filed: 1975-03-26
Abstract: 1499742 Interface circuits MOTOROLA Inc 26 March 1975 [30 Oct 1974] 12727/75 Heading G4A An interface circuit (8M, Fig. 1, not shown) coupled to a first bidirectional data bus (6M), 13 (Fig. 2) and a second bidirectional peripheral data bus (7M); 29, 31, includes a control register (3M); 21, 24 coupled to the bus for defining under programme control the direction of data transfer on individual conductors of the peripheral data bus. Locations in direction registers 27, 34 control whether an associated peripheral data line is designated as in an input or an output. Control registers 21, 24 enable control of four peripheral control lines CA1, CA2, CB1, CB2 and bits 0-5 of the registers may be written or read by the processor when the proper chip select and register select signals are applied. Bit 0 enables processor interrupt signals IRQA, IRQB. Bit 1 determines the active transition of the interrupt signals CA1, CB1. Bits 3, 4 and 5 control the CA2, CB2 peripheral control lines. Bits 6 and 7 are interrupt flag bits set by transitions of signals on the lines CA1, CA2, CB1, CB2. As described the interface circuit is fabricated on a MOS chip.