baber/WOPTO huggingface dataset:
Patent GB-889994-A (GB)
Title: Improvements in water tube boilers
IPC: F22B21/34
Filed: 1958-07-10
Abstract: 889,994. Water-tube steam boilers. VORKAUF, H. July 10, 1958 [Aug. 1, 1957], No. 22217/58. Class 123(2) A water-tube boiler comprises a steam collection drum 1 which is mounted on two down tubes 2, 3 which are arranged in two corners of the boiler and have their ends connected to lower longitudinally extending headers 6, 7 which convey water to tubes 8 forming the side walls of the furnace. Front and rear end wall tubes 5, 14, brought together to form the roof of the furnace, are connected to a transverse header 15 which is arranged across the upper rear end of the boiler and is connected between upper longitudinally extending collecting headers 9, 10 which communicate with the drum 1 and the upper ends of the side wall tubes 8. The front and rear wall tubes 5, 14 are supplied from headers 4, 13 connected respectively between the down tubes 2, 3 and to the junction between the headers 6, 7 and two return flow vertical tubes 11, 12. Steam overflow tubes 16, 17 extend from the tubes 11, 12 to the drum 1. The upper ends of the tubes 11, 12 are connected to the rear ends of the collecting headers 9, 10. Combustion gases flow, through an upper convection heating chamber formed between the spaced horizontally extending portions of the front and rear wall tubes 5, 8 and the upper ends of the side wall tubes 8, down an evacuation flue 21 which may house an economiser and is arranged behind the rear wall tubes 14, and out through an opening 22. The upper convection space accommodates nested U-shaped coils 18, 19 each of which branches from and re-enters the same side wall tube 8 and is of a smaller diameter than the latter. A constriction 20 in each tube 8 between the branching off and re-entering points of the respective U-tube ensures adequate flow through the U-tubes 18, 19. The ends of the tubes 5, 8, 14 forming the side and end walls and the roof of the furnace converge near their junctions with the header tubes so that the tubes lining the furnace can be situated as close as possible to each other. In a modification, Fig. 4, not shown, a similar kind of boiler has an upwardly directed draught.
Patent GB-437907-A (GB)
Title: Improvements in or relating to the treatment of cellulose esters
IPC: C08B3/22
Filed: 1934-07-30
Abstract: Residual catalyst is separated from a cellulose ester, prepared by esterification of cellulose with an organic acid in the presence of an inorganic acid catalyst and a non-solvent for the ester, by adding to the reaction mass, before or after removal of the esterifying liquor, a substance that is soluble in the esterifying liquor or in the non-solvent, and is reactive with the residual catalyst to form an insoluble compound.  Suitable substances are alcoholates, phenolates, naphtholates, oleates, stearates, salicylates, and benzoates.  In the case of having phosphoric or sulphuric acid as catalyst, the alkaline earth metal or lead salts of such substances may be used.  When perchloric acid is the catalyst, a potassium salt is suitable, e.g. potassium alcoholate.  In an example, cellulose is pretreated with acetic acid and sulphuric acid and acetylated by means of acetic anhydride in the presence of benzene.  Towards the end of the reaction, calcium salicylate is added.  In a second example, the acetylation reaction of the first example is completed without addition of the precipitant, the acetylating mixture is removed and replaced by benzene containing barium phenolate.
Patent GB-1388460-A (GB)
Title: N-demethyl-celesticetin derivatives
IPC: C07H15/16
Filed: 1973-05-10
Abstract: 1388460 Celesticetin derivatives UPJOHN CO 10 May 1973 [12 June 1972] 22385/73 Heading C2C The antibiotics N-demethyl-7-o-demethylcelesticetin of Formula (IV) and N-demethylcelesticetin of Formula (IVa) and their acid addition salts, are produced by cultivating Streptomyces caelestis, strain 22218a (NRRL 5481) under aerobic conditions in a nutrient medium until substantial antimicrobial activity is present in the said medium. The compounds (IV) and (IVa) may be converted to N-demethyl-7-o-demethyldesalicetin of Formula (V) and N-demethyldesalicetin of Formula (Va) respectively, by subjecting them to hydrolysis with a base. Novel analogous compounds of general Formula (VIII) and acid addition salts thereof; wherein X is -OH, Cl, Br, I or C 1-20  alkoxy and may be in the (R) or (S) configuration; R is a hydrocarbon carboxylic acid acyl group of not more than 18 carbons which may be substituted by halo, nitro, hydroxy, amino, thiocyano or C 1-8  alkoxy, or is the group R 1  is H, C 2-20  alkyl or C 2-5  hydroxyalkyl; and R 2  is hydrogen, 2-hydroxybenzoyl, or a hydrocarbon carboxylic acid acyl group of not more than 18 carbons which may be substituted by halo, nitro, hydroxy, amino, thiocyano or C 1-8  alkoxy; are prepared by subjecting a compound (IV), (IVa), (V) or (Va) to a conventional acylation or phosphorylation treatment, and a Rydon reaction when X is halogen. The compounds (IV), (IVa), (V), (Va) and (VIII) have antibacterial activity, and may be admixed with an appropriate diluent or carrier to provide antibacterial compositions for pharmaceutical or disinfectant application.
Patent GB-221081-A (GB)
Title: Improvements in closure and locking devices for cans, jars and other containers or articles
IPC: B65D45/28
Filed: 1923-09-06
Abstract: 221,081. Taneborne, J. B. Sept. 6, 1923. Hubs.-A coupling, adaptable for securing spare wheels on dummy hubs or hub caps on wheel hubs, comprises an inner member a, Fig. 4, an outer member d provided with a springy band or strip g formed with diametrically opposite ears h, h<1>, each having a bend or kink to clip into a recess j on the member a, and a washer l of rubber, leather, &c. between the two members and formed with an annular flange m of rectangular section pressed out by a rib n' on one member, the annular flange being adapted to fit into a corresponding groove on the abutting face of the other member. The ear h, Fig. 1, is disposed between two lugs b on the member a and is pivoted on a pin f about which the member d is hinged, the other ear h' engaging a removable pin k in lugs c. To ensure that the strip g and the member d move together, the strip embraces the outside edge of the member d.
Patent GB-1390572-A (GB)
Title: High-pressure gas discharge lamp
IPC: H01J61/52
Filed: 1973-05-11
Abstract: 1390572 Gas discharge lamps PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 11 May 1973 [16 May 1972] 22498/73 Heading H1D A high-pressure gas discharge lamp including a saturated vapour has an electrode at one end of a vessel and the vessel has a composite external coating in the region of the electrode to prevent the formation of cool regions, the coating consisting of a first film having a reflection coefficient not more than 0À2 and a second film over the first having a reflection coefficient not less than 0À5, the films being of materials having melting points over 1000‹ K. and vapour pressures less than 10<-6> Torr at 1200‹ K. The first film can consist of any of carbon, carbides, silicates or borates or mixtures thereof. The second film can consist of one or more ceramic oxides, e.g. calcium, magnesium, zirconium, aluminium or thorium oxides. A method of applying the coating can include coating the vessel with graphite suspension, drying the film so formed, coating with a suspension of zirconium oxide in a solvent and binder, the composite coating then being heated in air at a temperature of 250‹ C. to 500‹ C. The tube can have a filling consisting of 150 mg. Hg., 6 mg. Dy, 12 mg. HgI2. 5 mg. TII, 3 mg. CsI and 0À3 mg NaI together with argon up to a pressure of 20 Torr.
Patent GB-928374-A (GB)
Title: Improvements relating to laundry machines
Inventor: SIBBALD FREDERICK ROY
IPC: D06F17/06
Filed: 1958-07-14
Abstract: 928,374. Washing-machines. HOOVER Ltd. June 25, 1959 [July 14, 1958], No. 22505/58. Class 138 (2). [Also in Group XIII] A washing-machine comprises a bottom wall 10, side walls 11, and a skirt 12 surrounding a mechanism compartment, the bottom, side walls and skirt being formed as a single moulding. The moulding may be of high density polyethylene, polypropylene or a polycarbonate. Part of the bottom 10 is downwardly stepped along one side to form a heating compartment 28A (Fig. 4) closed by a grille 29 and containing an electric heater. An outlet 35 leads to a volute chamber 37 containing a pump impeller 36. The pump has an outlet passage 42 containing a vertically slidable outlet pipe 50. During washing, the pipe 50 is swung so that a part 56 engages under a retaining block 58 (Fig. 1) whereby a spring-pressed rubber stud 55 closes the end of the pipe 50 and the pump impeller 36 idles. The machine also includes a cable storage compartment 60 closed by a cover 65 pivoted at 67.
Patent GB-1329815-A (GB)
Title: Production of tertiary acetylenic glycols by reaction of  acetylene with ketones
IPC: C07C29/42
Filed: 1971-04-19
Abstract: 1329815 Acetylenic glycols BADISCHE ANILIN- & SODA-FABRIK AG 19 April 1971 [25 Feb 1970] 22558/71 Heading C2C Tert.-acetylenic glycols are made by reacting acetylene with a ketone in a hydrocarbon solvent in the presence of a potassium salt of an alcohol having a max. solubility in water, at 20‹ C., of 30 g per 100 g water. Potassium butoxide may be made by mixing aqueous KOH with butanol and removing water by azeotropic distillation.
Patent GB-850444-A (GB)
Title: Overload release rotary motion device
IPC: F16D9/00
Filed: 1958-07-15
Abstract: 850,444. Overload release clutches; securing clutch members on shafts. KUENEMAN, J. R., and KUENEMAN, D. July 15, 1958, No. 22607/58. Class 80 (2). An overload release clutch for rock crushing or like heavy machinery, shown as connecting a pulley 15 and a shaft 11, comprises a radial bar 31 fast with the shaft and carrying a leaf spring 34 the ends of which are held bowed by engagement in recesses 48 in plates 23 secured to the pulley, one edge 52 of the recesses 48 being chamfered so that on overload the ends of the leaf spring 34 ride out of the recesses and straighten under their natural resilience to positions completely clear of the plates 23, whereby the clutch is disengaged. To re-engage the clutch, the apparatus is stopped, and screws 42, Fig. 7, are inserted into tapped holes 41 in the bar 31, the screws being turned until the leaf spring 34 is sufficiently bowed for its ends to be positioned opposite to the recesses 48 in the plates 23. On removal of the screws 42, the ends of the leaf spring 34 re-engage in the recesses 48. The recessed plates 23 are secured to the pulley 15 by screws 46, shims 47 permitting adjustment of the axial position of the plates. The bar 31 is formed with a channel 33 within which the leaf spring 34 lies and is reinforced by a back flange 44. The hub 24 of the bar 31 is recessed to accept an axial key 29 similarly accepted in a recess in the shaft 11, a pinch bolt 25 drawing together two ears 26 on each side of an axial slot in the hub to secure the bar on the shaft.
Patent GB-767506-A (GB)
Title: Improvements in or relating to travelling wave tubes
Inventor: ROGERS DOUGLAS CECIL
IPC: H01J23/26
Filed: 1953-08-17
Abstract: 767,506. Travelling wave tubes. STANDARD TELEPHONES & CABLES, Ltd. Aug. 17, 1953, No. 22651/53. Class 39(1). The helix of a travelling wave tube is formed as a conductive coating 10, Fig. 1, on an insulating tube 8, and a resistive (lorry) coating covers the helix turns and bridges the spaces between the helix turns. The width and pitch of the turns increase at each end for impedance matching to external waveguides or coaxial lines with " built-out " cavities. The uncoated portion of tube 8 may be shaped as a ribbon of uniform width, as shown, which may or may not terminate in a longitudinal portion 12. Tube 8 may be of low loss glass, and is coated by inserting therein a wire or ribbon helix with end turns of varying pitch as a mash and evaporating metal from a wire suspended along the axis. The wire may be of tungsten or molybdenum plated with gold, nickel or copper, the plating metal being evaporated. The metal coating on tube 8 may be used as a base for a further coating. After the mash and axial wire have been removed, a coating of resistance material to provide loss is then deposited over the whole inner surface. The tube 8 is carried by metal sleeves 13 having spring fingers 14 engaging the envelope and serving as D.C. connections to the helix. One finger 14 is connected to the gun anode 4. Tube 8 may be used as the tube envelope but this is not preferred. The helix may be provided with an outer conductor, to serve as an electrostatic screen. Flanges 2, 22, 23, 24, 25 form chokes with sleeves 13, 14 and portions of the helix, and the end portions of the helix act as <#>/4 antenna probes. Specification 668,725 is referred to.
Patent GB-1008937-A (GB)
Title: Radio signal receivers
IPC: H03D1/22
Filed: 1963-06-06
Abstract: 1,008,937. Stereophonic radio signal receivers. RADIO CORPORATION OF AMERICA. June 6, 1963 [June 19, 1962], No. 22661/63. Heading H4L. In a stereophonic radio signal receiver for a signal of the type which includes a pilot signal for regenerating a harmonically related subcarrier for demodulating purposes, the circuit for providing the harmonically related subcarrier includes a class C amplifier having an input circuit coupled to a pair of diodes acting as a full-wave rectifier in the output of a resonant circuit selecting the pilot signal and an output circuit tuned to the subcarrier frequency, the amplifier being provided with selfbiasing means so that it conducts only at the peaks of signals applied thereto. As shown in Fig. 1, the output of the F.M. detector 8 is supplied via an amplifier 23 to an amplifier 18 having an anode circuit 36 tuned to select the 19 kc/s. pilot signal. The pilot signal is frequency-doubled by a full-wave rectifier circuit 39. The 38 kc/s. signal developed across resistor 44 is supplied to the class C amplifier 47 and the anode circuit 58, tuned to 38 kc/s. supplies the regenerated subcarrier as a switching signal to the demodulator 57. Cathode bias circuit 55, 56 ensures that the bias is self-regulating as a function of pilot signal amplitude to improve the phase stability of the 38 kc/s signal. A neon tube 33 lights up only in the presence of a pilot signal to indicate stereophonic reception. A filter 66 selects the L-R sidebands, and provides high-frequency de-emphasis, and rejects an additional unrelated signal which may be present on a 67 kc/s. subcarrier, the L-R signal being supplied to the demodulator 57. The demodulated L-R signal is supplied to a phase splitter valve 74 so that + (L-R) is developed across resistor 79 and - (L-R) is developed across resistor 80, and the L+R signal is fed from a potentiometer 31 to the junction of resistors 79, 80, via a de-emphasis network 86, 88, the resulting L and R signals appearing at terminals 16 and 17 respectively. During monophonic reception there is no output from the class C amplifier 47 thus providing automatic change-over from stereophonic to monophonic reception and a reduction of noise.
Patent GB-1092772-A (GB)
Title: Improvements in or relating to the housing of electrical elements
Inventor: OLIVER KELSO SIDNEY
IPC: H01G2/10
Filed: 1965-05-28
Abstract: 1,092,772. Capacitors. TELEGRAPH CONDENSER CO. Ltd. May 2, 1966 [May 28, 1965], No. 22720/65. Heading H1M. The open end of capacitor casing 4 is sealed by resting a closure disc 5 on a shoulder 10 on the internal wall of the casing and fixing it in position by means of a ring 12 which is fused to another shoulder 11 of the casing by ultrasonic welding. The casing and ring may be of polypropylene, polycarbonate, acrylic resin, or a " plastic alloy " of a methylmethacrylate and styrene copolymer, and a butadiene elastomer. They may be of different materials as long as these are ultrasonically weldable. Pimples 16 locatable by depressions 17 may be provided on the ring 12, so that the contact area is initially smaller than the whole as is apparently desirable in ultrasonic welding. The left-hand side of the Figure shows the arrangement prior to welding, the right-hand side after welding, with the leg of the L-shaped cross-section of ring 12 distorted to press against disc 5. The latter, as shown, comprises a resilient rubber layer 18 and a rigid " Bakelite " (Registered Trade Mark) layer 19, Fig. 2 (not shown), illustrates an alternative arrangement in which the casing and a cap have corresponding flanges which are fused together by ultrasonic welding.
Patent GB-811983-A (GB)
Title: Improvements in or relating to electrical capacitors
Inventor: ROBINSON FREDERICK CHETHAM
IPC: H01G4/228
Filed: 1955-08-08
Abstract: 811,983. Fixed capacitors. HUNT (CAPACITORS) Ltd., A. H. Aug. 2, 1956 [Aug. 8, 1955], No. 22761/55. Drawings to Specification. Class 37. A capacitor of the type in which a strip of metallized dielectric such as polyethylene terephthalate is wound into a roll has the ends of the roll roughened so as to improve the adhesion of metal which is sprayed on to make connections to the electrodes. The roughening is effected by shallow cuts on the roll ends, sand blasting the roll ends or the ends of the stock rolls of dielectric film before metallizing, irregular winding of the web, or by cutting the edges of the dielectric film irregularly. Specification 811,984 is referred to.
Patent GB-463530-A (GB)
Title: Improvements in and relating to sewing machines
IPC: D05B73/12
Filed: 1936-08-19
Abstract: 463,530. Sewing-machines. MAUSERWERKE AKT.-GES. Aug. 19, 1936, No. 22858. Convention date, Oct. 3, 1935. [Class 112] In differential feed seaming machines, an auxiliary differential feed dog is mounted to engage the folded-down edge of one section of fabric and an auxiliary presserfoot cooperates to engage the folded down opposed edge of the second piece of fabric, these folds being turned down into a slot in the work support. Feed. The auxiliary differential feed dog 11 is mounted in a carrier 10 on a shaft 9 which is given rocking and forward and backward feeding movements by the differential feed bar 1 through a link 6, and T-shaped bar 7 secured to the bar 1 by the bracket 2. Presser foot. The auxiliary presser foot 13 is carried on an arm 14 pivoted on the spindle 17 and pressed to the work by springs 20, 23, Fig. 7. When the chain 26 is operated to lift the main presser, it also disengages the auxiliary presser by the arm 25, arm 27 and cam 28, Fig. 3. Work supports and guides. The work is folded down into a slot in the work support 33, Fig. 5, one edge passing over a tongue 34, which covers the auxiliary feed dog 11. The edges are guided by a guide 37 adjustable vertically on the stud 38 to determine the width out off by the trimmers 35, 35.
Patent GB-598616-A (GB)
Title: Improvements in or relating to fixing and/or making electrical connections to fine wires or the like
IPC: H01C1/14
Filed: 1945-09-05
Abstract: 598,616. Making electric fuses &c. STANDARD TELEPHONES & CABLES, Ltd., and GILLIVER, G. Sept. 5, 1945, No. 22902. [Classes 83 (ii) and 83 (iv)] [Also in Groups XXI and XXXVI] Building up parts of articles by spraying.- Fine wires are secured to an insulation by a sprayed adherent layer of conducting or non- conducting material. An electric detonator is made by winding a fine wire 2 on a strip 1 of insulating material, masking the edges of the strip and spraying the unmasked surface on each side of the strip with metal to secure the wire. The detonators are detached by stamping out portions 5 and severing along the line 77. Fuses for telephone circuits are made similarly, Fig. 6 (not shown).
Patent GB-450060-A (GB)
Title: Improvements in or relating to electrical supply equipments
IPC: F01L25/06
Filed: 1935-08-14
Abstract: 450,060. Dynamos. PESTARINI, G. M., c /o Soc. San Giorgio, Genoa, Sestri, Italy. Aug. 14, 1935, No. 22919. Convention date, Aug. 15, 1934. [Class 35] In an electric supply equipment including a metadyne generator 1 supplying a variable voltage load, e.g. a traction load 2, 3, and also arranged to supply a supplementary load circuit 4, 5 with substantially constant voltage, the supplementary load circuit is connected across the primary brushes a, c in series with a primary variator winding 6 adapted to neutralize the armature flux due to the supplementary load current to a sufficient extent to render the current flowing to or from the primary constant voltage source 10, 11 substantially independent of the auxiliary load. The number of turns of the neutralizing winding placed on each pole is equal to the effective number of armature turns acting on that pole. A secondary variator winding 12 in the axis of the secondary brushes b, d may be provided for controlling the value of the secondary current, and the value of the primary magnetizing current is reduced sufficiently to cause the machine to function as a generator by the provision of a primary variator winding 7 connected as described in Specification 417,517. The primary source may comprise a small generator driven from the shaft of the metadyne or a battery. To give smoother and more stable operation, a secondary variator winding 17, Fig. 4, carrying the total primary current may be arranged to induce between the primary brushes a voltage opposing the primary current. In the form shown in this Fig., the primary source is a small shunt-excited generator 16 driven from the main machine and controlled by a vibratory regulator 25 sensitive to the primary voltage. The primary magnetizing current may be reduced further by the provision of a winding 19 inducing between the secondary brushes an electromotive force in the same direction as that induced by the rotor ampere-turns due to the primary magnetizing current and traversed only by the current from the primary source. Fig. 5 shows a modification in which the primary source is a battery 18. A stator winding 20 on the metadyne acts in the primary axis and is traversed by a current adjusted by means of a vibrating regulator 21 sensitive to the voltage at the primary brushes. If the voltage is low owing to the battery being in a discharged condition, charging current flows from the generator until the battery voltage rises to the nominal primary voltage or until the maximum excitation has been placed on the winding 20. If the battery voltage is high, the winding 20 will take the necessary current from the battery to give the nominal primary voltage. In a modification of this arrangement, an additional secondary variator winding is excited differentially from an unsaturated shunt machine and the battery 18 as described in Specification 430,009 with the object of supplying a constant secondary output. Specification 399,351 also is referred to.