baber/WOPTO huggingface dataset:
Patent GB-566445-A (GB)
Title: Improvements relating to searching arrangements in telephone systems
IPC: H04Q3/00
Filed: 1943-08-13
Abstract: 566,445. Automatic exchange systems. SIEMENS BROS. & CO., Ltd., and CHRISTIAN, D. A. Aug. 13, 1943, No. 13187. [Class 40 (iv)] In an arrangement for selecting an idle one of a group of outlets each of which is associated with a grid-controlled gas-discharge tube, a number of outlets are tested simultaneously and the relays for responding to the ignition of the tubes are connected in a chain circuit so that only one output is selected. In Fig. 1, the tubes GT are arranged in rows and columns, with row relays VA, VB ... connected to the cathodes and column relays HA, HB ... to the anodes, the latter relays being in a chain circuit. An idle outlet is indicated by positive grid potential and the outlets of each row are tested simultaneously by the application of a starting potential to all the tubes of the row. If the row contains no idle outlet, the build-up of potential on a condenser QA ignites a pilot tube PT and operates a relay LA, LB ... to transfer the starting potential to the next row. When there are idle outlets in a row, the column relay connected to the earliest ignited tube energizes in series with the row relay and disconnects the later column relays. The operated relays indicate the selected outlet to an operator or to a selector switch, e.g. a cross-bar switch. The search may be repeated if no idle outlet is found. Instead of serving one large group of outlets, the tubes may be divided between several smaller groups, not necessarily of the same size, there being a separate starting circuit for each group. In Fig. 4, all the outlets of a group are tested simultaneously, the row relays VA, VB ... as well as the column relays HA, HB being connected in a chain circuit so that only one can be operative at a time. When the row relay of the earliest row containing idle outlets operates, it locks in series with relay E which disconnects the earlier row relays and prepares the circuit for the column relays. Relays HA, HB ... have separate locking circuits and control identifying circuits over a chain of contacts so that an outlet subsequently becoming idle in an earlier column produces no effect. The starting potential is applied over a stepping switch in order that the search may be restricted to one or more rows when required.
Patent GB-773385-A (GB)
Title: Improvements in or relating to a circuit arrangement comprising a detector and a transistor
IPC: H03D1/18
Filed: 1955-05-06
Abstract: 773,385. Transistor amplifying coupling circuits; frequency discriminators. May 6, 1955 [May 10, 1954; Aug. 9, 1954], No. 13190/55. Classes 40(5) and 40(6) In an arrangement for coupling a detector to a transistor amplifier, the detector output filter comprises in series a resistor shorted for the modulation frequency and the primary winding of a step-down transformer, the secondary of which feeds the transistor. The detector may be arranged' for the detection of amplitude-modulated or frequency-modulated waves. Oscillations from tuned circuit 1, detected by a diode 2 appear across capacitor 3 and are applied to the network 4, 5, 6. The capacitor 5 acts as a short-circuit across resistor 4 at the modulation frequency, so that the whole of the output is applied to the primary of transformer 6. The input resistance of transistor 7 reflected in the primary of transformer 6 is arranged to be of the same magnitude as resistor 4 so that the A.C. and D.C. loads are the same. The transformer ratio may be chosen so that the A.C. load exceeds that of the D.C. and where the stray capacity 17 is sufficiently large the capacitor 3 may be omitted. A small potential difference 18 may be employed to bias the diode 2 to its optimum working point. The standing current of the transistor 7 may be reduced by employing a class B stage employing two transistors in push-pull which may be of the NPN and PNP types. In a modification (Fig. 2, not shown) the D.C. developed across capacitor 3 is fed to the base circuit of transistor 7 so that an A.G.C. may be derived from the transistor. Since this may result in the over-loading of the transistor, an auxiliary detector 11, 12 may be employed Fig. 3 and applied over filter 13. 14 to the secondary of the transformer 6. If the winding of the primary and secondary are correctly poled, magnetization may be avoided. The diode 11 is tapped on the inductor of circuit 1 in the same ratio as the transformer 6. When applied to a frequency demodulator, Fig. 4, the output resistors are replaced by a centre-tapped transformer 6, the centre tap being connected over resistor 4 to the primary of the input transformer 19. With a ratio detector, Fig. 5, the output load is replaced by resistor 4 and transformer 6.
Patent GB-1022276-A (GB)
Title: Process for the preparation of dry concentrated acid composition
IPC: B01J19/06
Filed: 1964-03-31
Abstract: A liquid acid, e.g. sulphuric, phosphoric and acetic acids, is absorbed on to a highly surface-active finely-divided absorbent material to form a dry powder by spraying the acid on to the absorbent with intermittent mixing and continuous cooling during an initial period to restrict the temperature to below 212 DEG  F., continuing to spray the remainder of the acid with continuous stirring and cooling to maintain the temperature below 212 DEG  F. and finally cooling the mixture with continued stirring.  Suitable absorbents are silicas and silicates, aluminas and aluminates and diatomaceous earths, particularly the product of the hydrothermal reaction between a diatomaceous earth and a source of calcium. Preferably concentrated acids are used, e.g. 80% or higher sulphuric acid, preferably 66 DEG  Baum<\>e sulphuric acid.  A product having at least 80% absorbed sulphuric acid may be obtained.
Patent GB-1247633-A (GB)
Title: Dye-image stabilization processing of colour photographic printing paper
IPC: G03C7/30
Filed: 1970-03-19
Abstract: 1,247,633. Dye-image stabilizing of photographic colour prints. FUJI PHOTO FILM CO. Ltd. March 19, 1970 [March 19, 1969], No. 13269/70. Heading G2C. The dye-image in processed photographic colour printing papers is stabilized by treatment of the papers in a bath comprising an aqueous solution of a water-soluble aluminium salt (e. g. potassium or ammonium alum or aluminium sulphate), a poly-carboxylic acid or salt (e. g. citrate, tartrate) and benzoic acid or a salt thereof. A zinc salt (e. g. acetate, bromide, chloride, nitrate or sulphate) and boric acid or a salt thereof may also be present.
Patent GB-909145-A (GB)
Title: Improvements in and relating to hydraulic pumps and motors
IPC: F01B3/00
Filed: 1960-04-14
Abstract: 909,145. Reciprocating pumps. BAUER, K. April 14, 1960 [April 15, 1959], No. 13363/60. Class 102(1). [Also in Group XXIX] A swash-plate pump or motor comprising a stationary cylinder block 4 having a plurality of parallel bores reciprocably mounting pistons 10 includes ball-ended connecting rods 9 bearing against a bearing ring 8 co-operable with a wobble plate 6 mounted on a cross-bolt 7, of a drive shaft 1. The wobble plate is pivotably adjustable to adjust the piston stroke. Each connecting rod 9 is provided with a longitudinal bore 12 connecting the working chamber 11 of the pump bore with a space 13 between the ball end and the bearing ring and this space is connected through a throttled aperture 15 to a cushioning chamber 16 formed by a recess in the bearing plate and the adjacent surface of the wobble plate. The cross sectional area of the recess is made larger than that of the associated cylinder bore so that the bearing ring is urged away from the wobble plate. The transmission force between the wobble plate and the bearing ring being entirely hydrostatic. The amount of the gap between the ring and the plate is such that the amount of liquid passing therethrough equals the amount of liquid entering the chamber 16 through the throttled aperture 15. Specification 696,770 is referred to.
Patent GB-412027-A (GB)
Title: Improvements in or relating to valves
IPC: F16K5/22
Filed: 1933-05-08
Abstract: 412,027. Lubricating valves. MOREHEAD, F. H., Hempfield Township, Pennsylvania, MARTIN, J. C., Roosevelt Building, Los Angeles, and WALWORTH PATENTS, Inc., 28, Albany Street, Boston, all in U.S.A. May 8, 1933, No. 13373. [Class 12 (ii).] In a plug valve sinuous grooves 17, 20, connected by longitudinal grooves 19, are provided on the plug 11 or casing 5 at the large and small ends of the plug, the grooves 17, 20 being interrupted at 18, 20<a> in staggered relationship. Lubricant is forced to the grooves by rotation of a bolt 88 in a tubular reservoir 80, the lubricant passing through a non-return valve 86 and an axial passage 16 in the plug to the grooves. The plug is held to its seat and is packed against leakage by packing 25 accommodated between an enlargement 15 on the plug and a cover 22 and pressed by a gland 30. Specification 406,887 is referred to.
Patent GB-157996-A (GB)
Title: Improvements in sinkers for submarine mines
IPC: F42B22/10
Filed: 1916-09-20
Abstract: 157,996. Skipwith, H. L. d'E., and Sturgeon, R. A. Sept. 20, 1916. Mines, marine. - Relates to rope drums in sinkers of moored submarine mines, and consists in the provision of a plate 3, or a series of plates or rollers, or a combination of fixed plates and rollers, around the drum 1, in order to guide the rope 4 without sharp bends from the drum to a circular hole of small diameter through which the rope passes. The plate 3 extends along substantially the whole width of the drum.
Patent GB-727256-A (GB)
Title: Improvements in vapour generating and superheating units
Inventor: EVANS RICHARD HENRY
IPC: F22B21/34
Filed: 1952-05-27
Abstract: 727,256. Water-tube steam boilers. BABCOCK & WILCOX, Ltd. May 26, 1953. [May 27, 1952], No. 13391/52. Class 123 (2) A steam boiler comprises a steam-generating tube lined furnace chamber 1 divided by a vertical partition 14 formed of generating tubes into two equal compartments 5, 6 which are fired by pulverised fuel burner groups 3 and 4 respectively. The upper limit of chamber 1 is defined by an arch 23 above which is a tube lined radiant super-heating zone 24 through which the partition 14 also extends. The gases from the furnace compartments pass through this zone to a lateral outlet 25 and then flow through a lateral pass 26 and a downpass 27 to the stack. The generating tubes lining chamber 1 and zone 24 and those forming the partition 14 extend between lower headers 9, 10, 11, 15 and 16 and a steam-and-water drum 20, circulation being established through external downcomers 21. Saturated steam from drum 20 passes downwardly through a row 30 of superheater tubes lining the front wall 2 of zone 24 into a U-shaped header 19 whence the steam returns upwardly through tube rows 32 lining the side walls 7 into a pair of headers .33. The superheater tubes of rows 30 and 32 alternate on walls 2 and 7 with steam generating tubes receiving their steam-water mixture from the furnace-lining tubes therebelow through bifurcations for halving the number of generating tubes lining the zone 24. From headers 33 steam flows into a header 34 which distributes it for parallel flow through eight superheater tube platens 45 spaced at equal intervals across zone 24, the steam entering a box 46 whence it passes through eight further platens 47, 48 formed of hairpin tubes and located directly behind platens 45. The steam then flows into a U-shaped header 37 located at the bottom of downpass 27 and rises therefrom through tubes lining the walls of the downpass to an upper header 38, from which it passes through a section 62 of convection superheater disposed in the downpass, through an attemperator 65 for regulating the degree of superheater and through a secondary convection section 66 located in pass 26 to the final outlet header 68. Below superheater section 62, downpass 27 divides into three gas passes, the middle pass locating a convection reheater 69, which delivers its steam flow through an attemperator 72 to a secondary reheater 73, whilst in the outer passes, which are damper controlled, are located secondary economiser tube banks. The main economiser banks 83 are disposed at the bottom of pass 27.
Patent GB-641043-A (GB)
Title: Improvements in vulcanizers for belting
IPC: B29C35/00
Filed: 1948-05-18
Abstract: 641,043. Vulcanizing presses. GREENGATE & IRWELL RUBBER CO., Ltd., MORRIS, W. G., and CHEETHAM, S. May 18, 1948, No. 13400. [Class 87 (ii)] [Also in Group XI] A vulcanizing press for conveyer and like belting has electrically-heated platens that are separate from the press assembly and may be replaced when necessary by another set for a different voltage range. The Figures show such a press, which is mounted on a truck a to run on rails. The press comprises two cross-head castings e which are packed with asbestos wool for heat insulation and between which the removable platens c, d, with the. belt joint to be vulcanized, are clamped by means of swing bolts f. Fig. 5 shows the upper platen, which is constructed in two parts i, j, secured together by bolts n to make a flame-proof joint (for use in coal-mines). The lower part i is of heatconducting metal such as aluminium alloy and has grooves k which house heating elements m which are of the helical type and are enclosed in metal tubing to enable each element to be removed separately. The upper part carries a main terminal box p, auxiliary terminal box r, a temperature-sensitive device v and a thermostat and indicator device t visible through a window u. The upper platen has a plug and socket connector at each end. The lower platen is similar to the upper platen but has a connector at one end only, this connector being joined by a cable to one of the connectors on the upper platen. Both platens are cooled at z.
Patent GB-421324-A (GB)
Title: Improvements in and relating to the localisation of leaks in pipe lines
IPC: G01M3/28
Filed: 1934-05-03
Abstract: 421,324. Locating leaks in pipes &c. ENFIELD CABLE WORKS, Ltd., 296, High Holborn, London, and O'DUFFY, D. A., 9, Bagshot Road, Bush Hill Park, Middlesex. May 3, 1934, No. 13433. [Class 99 (ii)] A leak in a pipe line or cable a, containing a liquid b such as a mineral oil and having a make-up feed reservoir c at one end, is localized by injecting at a tapping d another liquid, such as a solution of 1-5 per cent rosin in mineral oil, which differs from the first by an easily distinguishable property and forms a column e capable of travelling within the pipe line. If the leak is at a point f<1> say, the column e will be carried towards it by oil from the reservoir c, but if it is at a point f<2> on the opposite side of the tapping d it will remain stationary, and this travelling or stationary condition of the injected column is determined by chemical or physical analysis of a sample or samples of the oil drawn from the said tapping after a predetermined period of time. The invention is also applicable to a pipe line containing a gas, e.g., nitrogen, a different gas, but one such as air having a density approximating to that of nitrogen to reduce diffusion to a minimum, being injected into the pipe. For testing a short section where the leak is known to be, and when it is not desired to make several tappings for injection purposes, one or more columns of gas may be injected at some suitable point outside the section and pushed along known distances by admitting make-up gas to one end in known volumes and withdrawing equal volumes at the opposite end. After the section has been left for a time the composition of the gas at any point along the section can be determined, and hence the position of the leak, by sampling at the point of injection or the withdrawal end of section ; alternatively the positions of the test columns are determined by withdrawing the whole gas column from the section and analyzing samples at definite intervals. The latter method may also be used for oil-filled pipes, but in this case the make-up feed must be maintained in operation.
Patent GB-1417376-A (GB)
Title: Method of sealing phosphate coatings on metal substrates
IPC: C23C22/82
Filed: 1974-03-27
Abstract: 1417376 Sealing phosphate conversion coatings PENNWALT CORP 27 March 1974 [25 April 1973] 13574/74 Heading B2E [Also in Divisions C1 and C7] Phosphate coatings on e.g. steel, galvanized steel, Zn or Al, are sealed by the application of an aqueous acid solution of an Al chromate polymer, at a minimum concentration equivalent to 0.1 g/l of CrO 3  and a pH of 3-5. The polymer may be made either by adding to a chromic acid solution at 160- 200F under agitation from <SP>2</SP>/ 3 -2 mole dried Al(OH) 3  gel per mole of acid sufficiently slowly to prevent precipitation of basic Al salts or by boiling the Al chromate solution produced by triturating Ag 2 CrO 4  with AlCl 3  in the presence of water. The phosphate coating may be heavy (e.g. Zn or Mn) or light (e.g. Fe) and is applied conventionally. Advantageously the sealing rinse is applied thereto e.g. by spraying and dried without intermediate water rinsing. The rinse solution is self-buffering at pH 4-5.
Patent GB-102371-A (GB)
Title: Improvements in or relating to Means for Modifying the Calibre and Range of Fire-arms.
Inventor: VIVEN JEAN
IPC: F41C27/06
Filed: 1916-09-25
Abstract: 102,371. Viven, J., and BessiÞre, G. Nov. 20, 1915, [Convention date]. Ordnance design; muzzle-loading.- Relates to firearms of the type in which the barrel is provided with an extension of larger diameter than the main bore, in order to fire projectiles of greater calibre, and consists in providing an extension of two or more gradually increasing diameters, the projectile for use therewith being similarly formed. In the form shown in the figure, the extension is of such diameters that a constant thrust is maintained as the projectile is expelled. The projectile may be formed with or without a rear extension engaging the main bore. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of an extension of a single increased diameter. This subject-matter does not appear in the Specification as accepted.
Patent GB-576937-A (GB)
Title: Improved methods of welding joints
IPC: B23K9/035
Filed: 1939-05-08
Abstract: 576,937. Uniting by fusion. GUY MOTORS, Ltd., and GUY, S. S. May 8, 1939, No. 13629. [Class 83 (iv)] In making fusion-welded joints between plates a, b arranged in planes at an angle to each other, particularly between the plates of armoured vehicles, a gap is left between the inner edges and a triangular strip c is placed in the angle on the inside of the joint and the angle filled in with weld metal from the outside so as to weld the plates together and also to the reinforcing strip. The ends a', b<1> may be left square or bevelled. The strip c may in addition be welded at its edges to the plates. According to the Provisional Specification, the adjacent edges of the plates may overlap, and further the process may be applied to butt joints.
Patent GB-593522-A (GB)
Title: Improvements in and relating to the preparation of thiazolidine derivatives
IPC: C07D277/06
Filed: 1945-05-31
Abstract: N-Formylthiazolidine carboxylic acid amides are manufactured from the corresponding acids, of the general formula <FORM:0593522/IV/1> (wherein R1 and R4 represent hydrogen or alkyl radicals and R2 and R3 represent alkyl radicals) by treating them in an inert solvent with a slight excess over one molecular proportion of thionyl chloride, and treating the resulting acid chloride (which need not be purified) with excess of ammonia.  Suitable starting materials are the products obtained by the action of formic acid and acetic anhydride on the corresponding thiazolidinecarboxylic acids prepared as described in Specification 584,918.  In an example, N - formylisopro - pylidenepenicillamine (R1 = R2 = R3 = R4 = CH3) is heated with thionyl chloride in dry benzene, the solution is evaporated in vacuo and the residue is treated with .880 ammonia in the cold. Specification 585,413 also is referred to.  According to the Provisional Specification, R1, R2, R3 and R4 in the general formula above may each represent hydrogen or an alkyl, aryl or aralkyl radical, and the substituent in the 3-position is formulated as -COR5, where R5 likewise represents hydrogen or an alkyl, aryl or aralkyl radical.
Patent GB-129502-A (GB)
Title: Improvements in connection with the Glands and Packings of Centrifugal Sand-pumps and analogous Apparatus.
Inventor: LUMLEY GASCOIGNE
IPC: F04D29/10
Filed: 1918-08-22
Abstract: 129,502. Lumley, G. Aug. 22, 1918. Connected to source of high pressure; grit, excluding.-A stuffing-box for the shaft of a centrifugal sand-pump &c. comprises a ring a secured to the shaft and entering a groove c in the bearing C between the packing E and the interior of the pump. Fluid under pressure is forced into the space between the groove and the ring, preferably through a lantern ring B between the packing and the ring a.
Patent GB-1438422-A (GB)
Title: Cephalosporin derivatives
IPC: C07D501/04
Filed: 1974-03-27
Abstract: 1438422 Cephalosporin derivatives AP DA LUZ 27 March 1974 [2 July 1973] 13705/74 Heading C2C Novel compounds I (R<SP>1</SP> is an organic radical other than 4-amino-4- carboxy-n-butyl; R<SP>2</SP> is an organic radical different from R<SP>1</SP>; R<SP>3</SP> is carboxyl or protected carboxyl; X is H, OH or an organic radical) are prepared by acylation of a compound IV The compounds I may be selectively deacylated to give compounds II
Patent GB-1125048-A (GB)
Title: Improvements in or relating to the recovery of vinyl acetate
Inventor: MILLIDGE ALFRED FRANK
IPC: C07C69/01
Filed: 1966-03-29
Abstract: 1,125,048. Vinyl acetate. DISTILLERS CO. Ltd. 24 Feb., 1967 [29 March, 1966], No. 13735/66. Heading C2C. Vinyl acetate is recovered from reaction mixtures thereof with hydrogen halide, by neutralizing or removing the hydrogen halide by the addition of an ion exchange resin prior to the subsequent distillation of the reaction mixture. A cation or anion exchange resin may be used, and the resin may be added to the distillation kettle or the mixture passed through a column of resin prior to distillation. The reaction mixture may be derived from the oxidation of ethylene in a suspension or solution containing acetate and halide ions with or without acetic acid and with a platinum group metal or compound as catalyst.
Patent GB-1271272-A (GB)
Title: Tow line conveyor switch system
IPC: B61B10/00
Filed: 1969-03-17
Abstract: 1,271,272. Conveyer routing system. SI HANDLING SYSTEMS Inc. 17 March, 1969 [31 May, 1968], No. 13770/69. Heading B7N. [Also in Division H1] In a tow line conveyer switching system including a main slot 14 and branch slot 16, each vehicle 24 carries a pair of magnets mounted on supports 34, 36 in positions defining the branch to which the vehicle has to be diverted and each magnet co-operates with a pair of track-mounted reed switches which at the required diversion point are connected by a manually - actuated diversion - point - defining switch completing the circuit to a solenoid operating the diverter tongue. Each magnet 50 is disposed at one end 48 of an arm support 46 which can be moved along support member 30 to positions defined by pegs 40. A magnet is provided on each side of the vehicle centre line and these co-operate with reed switches 52 disposed in banks 70, 72 on either side of the vehicle's centre line. Each reed switch 56, 58 &c. in bank 70 and 56<SP>1</SP>, 58<SP>1</SP> &c. in bank 72 is connected to its adjacent switch by a manually operated points defining switch 60, 60<SP>1</SP> &c. Assume one magnet is disposed to operate reed switches 58, 62 in bank 70 and the other is disposed to operate 56<SP>1</SP>, 58<SP>1</SP> in bank 72 and the diversion point defining switches 64 and 60<SP>1</SP> are operated then a circuit is completed, Fig. 7 (not shown), to operate the diverter. Each reed switch 52 is modified by the inclusion of a short strip of high permeability metal 54 in its leads thereby extending the distance from the switch at which the vehicle carried magnets will operate it and thus assuring all switches will close even though the front of the vehicle is skewed.