baber/WOPTO huggingface dataset:
Patent GB-1485914-A (GB)
Title: Process for the preparation of 4-amino-1,8-naphthalimide compounds
IPC: D06P1/00
Filed: 1975-05-15
Abstract: 1485914 Preparing 4-amino-1,8-naphthalimides HOECHST AG 15 May 1975 [15 May 1974] 20647/75 Heading C4P Compounds of the general formula wherein R is an optionally substituted amino group or an aliphatic, isocyclic or heterocyclic radical of a primary amine (RNH 2 ) having a pKa value (at 25‹ C.) of at least 8 and X is H or a sulphonic acid group are prepared by reacting 1 mol of a 4-halo-1,8-naphthalic acid anhydride with 1 mol of hydrazine or of a primary amine RNH 2  having a pKa-value of at least 8 and then reacting the 4-halo-1,8- naphthalic acid imide formed with ammonia and if necessary sulphonating the product when X is H. The reaction with the hydrazine or primary amine takes place at 50-150‹ C. preferably in presence of a polar solvent, e.g. water, glacial acetic acid or an aprotic solvent, e.g. dimethyl sulphoxide, N-methyl pyrrolidone, hexamethylphosphoric acid trisamide, dimethyl formamide or dimethylacetamide. The reaction with ammonia takes place at 150-180‹ C. in presence of water or an aliphatic alcohol, or mixtures thereof and the sulphonation reaction is carried out using chlorosulphonic acid or forming sulphuric acid preferably containing 5-20% sulphur trioxide at up to 50‹ C. The dyes are used to dye or print polyacrylonitrile and copolymers of acrylonitrile with vinyl compounds, block copolymers of acrylonitrile with polyurethanes, polypropylene or cellulose 2¢ and 3-acetates, polyesters and polyamides and are also used to colour plastics, resins, oils, waxes, paper, paints, lacquers, for spin dyeing polyacrylonitrile and the preparation of daylight fluorescent pigments.
Patent GB-226461-A (GB)
Title: Improvements in devices for holding and heating articles subjected to welding operations
IPC: B23K3/08
Filed: 1924-09-02
Abstract: 226,461. H÷fler, H. May 23, 1924, [Convention date]. Uniting by fusion. - An angularly adjustable pivoted casing for receiving and maintaining articles to be fusion welded to a burner at the required temperature, is arranged in a crank shaft so that the centre of gravity is in alignment with the axis of rotation. The casing a, which is provided with gas or electric heaters and has a number of hinged lids any of which may be opened to expose the portion to be welded, is secured to a frame b which is adjustably secured by clamps d according to the size of article to the radial portions c of a crank shaft c<1> mounted on open bearings e in a frame k. The casing or frame b may be provided with a toothed segment f so that the angular adjustment may be affected by a worm g, bevel gear and hand wheel h or treadle. In order to weld the ends of elongated articles, such as the bottom of a cylinder, the shaft c' may be removed and cranks m secured to the frame b mounted on hinged or otherwise unmovable bearings l so that the casing may be axially tilted as shown, the adjusting mechanism being similar to that first described.
Patent GB-185094-A (GB)
Title: Improvements in and relating to cuffs for shirts or the like
IPC: A41B7/10
Filed: 1922-07-28
Abstract: 185,094. Heusen, J. M. van. Aug. 22, 1921, [Convention date]. Double and single fabrics combined; fabrics with tubular portions; fashioning, weaving to facilitate.- Shirt cuffs are formed of multi-ply interwoven fabric adapted for convenience in folding and in attaching to the shirt. In one form, Fig. 2, the fabric is woven of a width twice that of the cuff and with a central part 1, in which the interweave is omitted. The fabric is cut through the part 1 and the shirt sleeve placed between the two plies 5, 6 and secured by stitching. In another form, Fig. 5, the fabric is woven with a portion of single ply, which is cut through and stitched to the shirt sleeve. The edges of the cuff are finished by turning over and binding with tape. For double cuffs, Fig. 9, the blank is of twice the width of the cuff and has a tubular or singleply portion 4 at its centre to facilitate folding and a similar portion 1<a> at one edge for attachment to the shirt. The cuffs may be of various materials, and the outer ply may be of silk &c. and the inner ply of less expensive material.
Patent GB-499760-A (GB)
Title: Improvements in or relating to tuned electric circuits
IPC: H03B5/22
Filed: 1937-07-27
Abstract: 499,760. Valve amplifying and generating circuits. STANDARD TELEPHONES & CABLES, Ltd., and BEALE, E. S. L. July 27, 1937, No. 20756. [Classes 40 (iii) and 40 (v)] An ampliner A, Fig. l,for low frequencies (i.e. below 200 cycles per second) incorporates a lowpass filter LPF while a high-pass filter HPF is connected in a feed-back circuit, the two filters comprising resistances and condensers only. The attenuation characteristics A, B, Fig. 3a, of the two filters have a resultant C which is at its minimum at a specific frequency, so that the amplifier acts most efficiently at this frequency. If the characteristics are as shown in Figs. 3b, 3c, the resultant is at its minimum over a band of frequencies, and the circuit acts as a band-pass filter. The gain of the amplifier may be increased so that it oscillates at the frequency corresponding to C. The two filters may have their positions interchanged. In a specific embodiment, LPF is constituted by resistance R1 and condenser C1, Fig. 3, and HPF by resistances R2, R3 and condenser C2. Negative feed-back is provided over resistances R4, R5 to such a degree that the net gain is dependent only on the feed-back circuit and is independent of changes in valve voltages so that stability is obtained for the positive feed-back over R2. Each filter may comprise a plurality of sections.
Patent GB-614355-A (GB)
Title: Improvements in electrical translating devices employing contact rectifiers
IPC: H01L29/00
Filed: 1946-07-11
Abstract: 614,355. Detectors. WESTERN ELECTRIC CO., Inc. July 11, 1946, No. 20779. Convention date, July 27, 1945. [Class 40 (v)] The surface of the crystal element used in a rectifying circuit is highly polished and the contact wire is arranged to engage this surface along its length, forming a uniform linear rectifying circuit. The arrangement increases the current capacity of the contacts without impairing the performance at high frequencies, due to capacitative reactance. Figs. 1 and 2 show a rectifier unit comprising a shield 1, a resilient diaphragm 2, on which is mounted the rectifying element 4 which may consist of silicon or germanium, highly polished as described, for example, in Specifications 590,458, [Group III], and 602,140. A short length of tungsten wire 7 in the form of a ring is mounted on one end of pin 5 which is secured in shield 1 by insulating cylinder 6, such that wire 7 is held in contact with crystal 4. Fig. 7 describes a modification, in which the contact wire is in the form of a helix and is placed between the crystal and a metal spacer, the arrangement comprising four such .elements to provide a full wave rectifier. The elements are maintained in contact by two balls bearing between the upper and lower spacers. and a metal frame.
Patent GB-400736-A (GB)
Title: Improvements in or relating to boots, shoes and the like, and to arch-supporting insoles for the same
IPC: A43B7/22
Filed: 1932-07-23
Abstract: 400,736. Foot-arch supports. TECNIC BOOT CO., Ltd. and TARRY, W. C., Bedford Road, Rushden, Northamptonshire. July 23, 1932, No. 20823. [Class 81 (ii).] In an insole comprising a foundation layer, a cushion layer, and a covering or sock layer having a marginal flap which is turned under the foundation layer to secure said sock layer, for example as described in Specification 324,873, [Class 17 (ii), Boots and shoes, Construction of], the foundation layer carries a stiff arch-supporting member and the other layers are made to extend over the upper side thereof. A leather insole 1, split and channelled to form a lip 1a, has secured thereto a leather, canvas, or other member 2, comprising one or more thicknesses shaped as shown on a last. A layer 5 of felt covers the insole and arch support and a covering layer 6, for example of soft leather, is formed, except at the heel portion, with a marginal flap 7 which is turned under and secured by sticking. A piece of felt or the like 9 is secured to the under side of the member 2. The composite insole may be pressed, blocked, moulded, or otherwise shaped. The foundation layer may be of canvas, provided with a sewing lip comprising a folded strip having a core of string or other material as described in the aforesaid Specification, and carrying a heel portion of leather. The covering layer may have an opening in the forepart exposing the cushion layer, and both layers may be perforated. The arch support may be integral with the foundation layer. Specification 213,432, [Class 81 (ii), Medical &c. appliances], is referred to.
Patent GB-1331439-A (GB)
Title: Integrated low-level magnetic decoder
IPC: H03K17/80
Filed: 1971-04-19
Abstract: 1331439 Magnetic amplifiers COMMISSARIAT A L'ENERGIE ATOMIQUE and COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE 19 April 1971 [13 Feb 1970] 20894/71 Heading H3B A saturable magnetic amplifier comprises two sheets of magnetic material 4, 5, Fig. 2, of like thickness and joined at their ends to form a loop containing two windings 6, 7, a control winding 8 passing through the centre of the thickness of the two sheets. The two sheets have an easy axis of magnetization shown at 9, and a hard axis 10. The current flowing in the control winding determines the saturation in the surrounding parts of the sheets, and hence controls the coupling between the layered windings 6 and 7. It is shown that the length of the magnetic circuit must be as short as possible compatible with avoiding stray coupling between the two windings 6 and 7. The device may operate as an amplifier or a switch. To make the device, one half of sheet 5 is vacuum deposited, then the lower part of conductor 8 is deposited. The other half of sheet 5 is deposited, followed by the layered windings 6, 7. Finally the upper sheet is deposited as two half sheets sandwiching the upper part of conductor 8.
Patent GB-137084-A (GB)
Title: Improvements in and relating to artificial teeth
IPC: A61C13/00
Filed: 1918-12-16
Abstract: 137,084. Plant, E. A. Dec. 16, 1918. Teeth, artificial.-An interchangeable artificial tooth a, Figs. 1 and 2, is formed with a circular or other hole b and an opening c extending for part or the whole of the depth of the hole and formed with a flared mouth d. A pest e, Fig. 5 or 6, is adapted to fit the hole b, and is formed with a projection f of such dimensions as to leave channels between the tooth and the projection. The channels are ultimately filled with the vulcanite, cast metal, or solder of the denture. The tooth, with its post, is first attached to a wax model of the denture or is secured by wax to a metal dental plate and is then removed, leaving the post in position, during the vulcanizing, casting, or soldering operations. The projection f of the post becomes reinforced by the vulcanite or metal so as completely to fill the opening c at its mouth d, and the tooth is then cemented in place. Fig. 3 shows the invention applied to another form of tooth, and Fig. 8 shows a post in the form of a dowel pin for use in crowning. The projection f, in the form shown in Fig. 5, is flush with the back of the tooth, and may be tapped so as to be secured to a metal plate by screws.
Patent GB-149202-A (GB)
Title: Improvements in motion picture machines
IPC: G03B21/18
Filed: 1920-07-12
Abstract: 149,202. Foreign Patents Corporation, (Assignees of Jenkins, C. F.). July 17, 1918, [Convention date]. Kinematograph apparatus.-A prism E is provided behind the film C so that the beam of light from the condenser D passes immediately out of the casing A to the projection lens G; the length of the beam within the casing A is thus small, so that the heating effect of the beam is small, and risk of ignition of the film within the casing is reduced.
Patent GB-404733-A (GB)
Title: Improvements in or relating to the making of glass and electric furnaces therefor
IPC: C03B5/027
Filed: 1932-07-25
Abstract: 404,733. Electric furnaces. HARTFORD-EMPIRE CO., 333, Homestead Avenue, Hartford, Connecticut, U.S.A.-(Assignees of Wadman, H. A. ; 816, Farmington Avenue, West Hartford, Connecticut, U.S.A.) July 25, 1932, No. 20950. Convention date, July 25, 1931. [Class 39 (iii).] In the manufacture of glass in a furnace wherein the current passes through the melt, the furnace charge is continuously introduced laterally below the surface of the melt and forms a shield for the furnace walls. The charging shafts 21 are inclined and arranged between the graphite electrodes 20. Ammeters are arranged in series with the electrodes and the individual feeds are manually or automatically controlled to maintain equal currents in the different phases. The apparatus is applicable also to the production of soluble silicates of soda, lime, aluminium silicates, and enamels.
Patent GB-324348-A (GB)
Title: Improvements in retorts for treating coal, peat, shale and like substances
IPC: C10B1/04
Filed: 1928-07-19
Abstract: 324,348. Shelton, D. D. July 19, 1928. Charging and discharging.-Material is fed to a vertical retort for treating coal, peat, shale, &c. from a feed hopper 6 having reciprocating agitators 8, 9, the material fed being divided into separate streams by a V-shape partition 7. The treated material is discharged past control dampers 94 and falls on hinged plates 72 resting on finned cooling drums 76. From these it falls on to adjustable distributor plates 88, and is finally discharged by a screw conveyer 87 provided with guard-plate 93, the plate 93 preventing overload on the conveyer. The discharge hopper 82 has a cooling jacket 86
Patent GB-715317-A (GB)
Title: Improvements in and relating to fire and heat detectors
Inventor: HALL HENRY WARBURTON
IPC: G08B17/06
Filed: 1950-08-24
Abstract: 715,317. Fire detector cables; temperature sensitive resistors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. I6, 1951, [Aug. 24, 1950.] No. 21003/50. Classes 36 and 37. [Also in Group XXXVIII] A temperature sensitive element for fire and heat detecting apparatus comprises a tubular conductor 4 and an inner conductor I, the intermediate space being filled with glass 2 and spacers 3 of quartz or other refractory material. The glass is in contact with both conductors and becomes conductive at a predetermined temperature. In manufacture, short tubular lengths of glass separated by the spacers are assembled between the conductors and heat and pressure are then applied to soften the glass and ensure intimate contact between the glass and the conductors. Fig. 4 shows an alarm circuit comprising the detector element 25 which is arranged to periodically reverse the polarity of the applied potential so that the glass material is not rendered unusable by polarization effects. The detector 25 is connected in series with a source of current, a reversing switch 22, and alarm relay 24 which controls contact 27 in series with warning lamp 26. If detector 25 reaches a predetermined temperature, the glass conducts sufficiently to operate relay 24 which is of the slow release type. Periodic current reversal is effected by means of a bimetallic switch having a heater 20. When the bimetallic switch operates, contact 28 opens to disconnect heater 20, and contact 2I closes to operate relay 23 which controls reversing switch 22. When the switch cools, contact 28 closes to repeat the cycle. Fig. 5 shows a modified circuit in which the polarity reversal occurs only while warning conditions are operative. Resistance 37 is connected across battery in series with relay 32. Detector 33 is normally connected across the upper half of resistance 37 via the upper "cold" contacts of bimetallic switch 3I. When, owing to a rise in temperature, 33 becomes conductive, relay 32 operates, to energize alarm 34 and heater 30 via contacts 36 and 35 respectively. When heated, bimetallic switch 3I operates so that heater 30 is disconnected and detector 33 is connected in reverse polarity across the lower half of resistance 37. On cooling, switch 3I restores to re-connect 33 across the upper half of resistor 37 and also to energize the heater 30, so that the cycle repeats so long as 33 is sufficiently conductive to operate relay 32, which is of the slow-release type. The detector may also be used in alternating current circuits, and may control means for reducing the temperature or extinguishing the fire. Reference is made to Specification 619,797 and U.S.A. Specification 2,477,348.
Patent GB-1224978-A (GB)
Title: Improvements in or relating to assemblies for use in mounting thermocouples and the like elements on burner brackets
Inventor: DUNN WILLIAM RUSSELL
IPC: G01K1/14
Filed: 1969-04-25
Abstract: 1,224,978. Thermocouples. HONEYWELL Inc. 25 April, 1969 [26 April, 1968], No. 21149/69. Heading HlK. [Also in Division G A thermocouple 1 is mounted in a sleeveshaped support 13 of a burner bracket 12 by means of an adapter which comprises a holder sleeve 7 into one end of which the couple I is inserted and a connector sleeve 14 which engages the support 13, e.g. through one of two external threads 14a, 14b, and within which the holder sleeve 7 can slide. Axial movement between the holder sleeve 7 and the connector sleeve 14 is yieldably resisted by means such as a ring 15 loosely situated in an annular groove 14c in the connector sleeve 14 and engaging threads 7e on the holder sleeve 7. A shoulder 7c or 7d on the holder sleeve 7 abuts a shoulder 13a within the support 13. The couple 1 is located longitudinally within the holder sleeve 7 by shoulders 2a, 2b and by a spring clip 8 which releasably engages the outer casing 3 of the couple through resilient fingers 11 and a groove 9 engaging a threaded portion 4 of the casing 3. The thermocouple may be released from its mounting by pulling the lead 6. The following abridgments are included in this series since the Specifications were, through an error, not allotted to this Group. References to them will be found in the indexes to this volume.
Patent GB-424399-A (GB)
Title: Improvements in or relating to devices for heating or for cooling apparatus
IPC: F25B35/04
Filed: 1934-07-19
Abstract: 424,399. Heating and cooling systems. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. July 19, 1934, No. 21164. Convention date, July 19, 1933. [Classes 29 and 64 (ii)] The condenser or evaporator element of a closed-cycle condensing- evaporating heat-transfer system for heating or cooling purposes consists of a flexible walled vessel 8 insertible into a recess in the vessel 1 to be heated or cooled, the flexible wall being maintained in conductive relation with the wall of the recess by the pressure of the heat transfer medium. In the case of an absorption refrigerating machine of the reversing type and using solid absorption media such as calcium chloride, the generatorabsorber 1 may have a central flue to adapt it for heating alternatively by electricity, gaseous fuel, or the heat transfer element 8 inserted in the flue. The element preferably comprises a sheet copper sleeve with flutings 26, Fig. 2, to render it resilient, and end caps 21, 22 connected by tie bolts 23, and it is secured by a screw 25 and cross-bar 24. It forms the condenser end of a system including an annular evaporator element 10, Fig. 1, heated by a burner 12 controlled by a timing valve 14. In a modification, Fig. 4, the closing-cap 21 may have spring tongue flanges 29 engaging the wall of the sleeve. Water or quinoline may be used in the system.
Patent GB-706097-A (GB)
Title: Improvements in the production of gear wheels, toothed annuli and the like
IPC: B21K1/30
Filed: 1950-08-28
Abstract: 706,097. Forging wheels. OPAL ENGINEERING DEVELOPMENTS, Ltd. Aug. 28, 1950 [Oct. 18, 1949], No. 21235/50. Class 83 (4) In a method of forging gear wheels and the like by upsetting a heated blank in a female die having the peripheral tooth form the approach faces of the male and female die have opposed concentric protuberances which accelerate the radial displacement of the blank. Male and female dies 4, 5 for forging a gear wheel have opposed truncated conical protuberances 6, 7 and annular protuberances 11, 12 both of which accelerate the radial displacement of the blank into the tooth forming zone 2<SP>1</SP> of an annular insert 2 in the female die 1. The insert 2 is retained within the die cavity by a locking ring 3 and the base of the female die comprises a knock-out pin with an enlarged head 5' having the protuberances 7, 11 thereon. The protuberances 11, 12 may be formed to provide a nozzle formation 16 for the radially outward passage of the blank but may be symmetrically shaped in cross-section or of right-angle V formation. In a modification the annular protuberances 11, 12 may be omitted and the radial displacement accelerated by the action of the truncated cones 6, 7 only. In another modification the radial displacement is accelerated by the annular protuberances 11, 12 only and the male die 4 is provided with a central punch which engages a bore in the base of the female die to form a gear wheel with a central bore, the blank in this case having a hole in its centre.
Patent GB-500526-A (GB)
Title: Improvements in or relating to radio direction finders
IPC: G01S1/02
Filed: 1938-07-18
Abstract: 500,526. Directive wireless systems. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. July 18, 1938, No. 21279. Convention date, July 17, 1937. [Class 40 (v)] In a direction finder in which " site " error is compensated by a correction cam mechanism, the direction indicator is mechanically coupled to the rotatable aerial through a.geared transmission including two rotatable discs which are mechanically coupled so as to be movable relatively to each other by means of an eccentric lever arrangement controlled by the correction cam. In the Figure, the indicator 15 is driven from the adjustable member I of the directive aerial system through the gear train 1, 4, 21, 2 6, 3, and the correction is obtained by means of a variable coupling between the gear wheels 21 and 2 which are connected by the pin 6 fixed eccentrically on the wheel 2 and projecting into a slot in the wheel 2<1> and also into the forked end 8 of a crank lever 7 which is fixed on the rectangular post 11 eccentrically pivoted io the wheel 2<1>. A lever 9 rotates with, but is capable of vertical movement with respect to, the post 11 and carries a roller 12 engaging the cam face of an internally cut fixed correction cam 13. When the wave-length is changed and a different correction is required, the lever 9 is moved up or down to engage a differ-. ently-shaped cam and is held in position by the rack 14. The indicator 15 gives relative bearings on the stationary outer scale 16 and true bearings on the compass scale 17. If the bearing scale is to be read at opposite sides, two independent correction drives may be employed, Fig. 2 (not shown). Specification 485,583 is referred to.