baber/WOPTO huggingface dataset:
Patent GB-985734-A (GB)
Title: Improved antibiotic derivatives and preparation thereof
IPC: C07H17/08
Filed: 1963-06-27
Abstract: A de-oleandrose 1,3-diacyloleandomycin ester wherein the acyl moiety is derived from a hydrocarbon monocarboxylic acid having from two to six carbon atoms is prepared by a process which comprises contacting the corresponding 1,2,3-triacyloleandomycin ester with at least a dimolar amount of a hydrocarbon sulphonic acid of the group consisting of C1-C4 alkane hydrocarbon sulphonic acids, benzene-sulphonic acid, p-toluene sulphonic acid or the naphthalene sulphonic acids, in a reaction-inert polar organic solvent at a temperature that is in the range of from 20 DEG  C. up to 100 DEG C., for a period of one-half to five hours, filtering the resulting crystalline slurry of de-oleandrose 1,3-diacyl-oleandomycin sulphonylhydrin sulphonate and dissolving the filter cake thus obtained in a C1-C4 alkanol, adjusting the pH of the latter solution to at least 8.0, and thereafter recovering the free de-oleandrose 1,3-diacyl-oleandomycin base therefrom.  Examples describe the production of products wherein the diacyl moiety is diacetyl, dipropionyl, dibutyryl, divaleryl or dicaproyl, and of mineral or organic acid addition salts thereof. The de-oleandrose 1,3-diacyloleandomycin esters may be converted to 1,3-diacyloleandomycins by condensation with oleandrose or a suitable derivative thereof such as 1-0-methyl-L-olean-drose. Specification 877,730 is referred to.
Patent GB-597402-A (GB)
Title: Improvements in or relating to pumps
IPC: F02M37/08
Filed: 1944-12-21
Abstract: 5 9 7 , 4 0 2 . Centrifugal separators. EDWARDS, M. L. Dec. 21. 1944, No. 25649. [Class 23] [Also in Group XXVI] A submerged pump, particularly for pumping aircraft fuel and adapted for separating vapour from the pumped liquid, comprises a hollow rotor 72 open at both ends, screw pump blades 73 for causing an axial stream of fluid through the rotor and centrifugal impeller blades 76 which deliver pumped liquid into a discharge volute 54. The blades 76 are integral with axial extensions 75 providing between them and a shroud chambers in which the vapour is separated from the liquid and whence the vapour is carried away upwards by the axial stream. A ring 88 may be provided to force the main stream into the chambers. In another form, the axial impeller is situated downstream from the centrifugal impeller and the separating chambers between the blades 38, Fig. 11, are upstream. In this case, the separator portions of the blading are not shrouded but are closed by the casing 23. Fig. 6 shows the impeller blades in crosssection. The radial inner portions 38 provide for an easy inward movement of the separated vapour. The axial discharge from the pump rotor may be through a vertical pipe within the tank so that the pump will maintain a minimum head when the level in the tank is low.
Patent GB-1413930-A (GB)
Title: Synthesis of phenyl amino alcohols
IPC: C07C205/19
Filed: 1974-06-11
Abstract: 1413930 Alkanolamines COMMERCIAL SOLVENTS CORP 11 June 1974 25787/74 Heading C2C erythro-Alkanolamines of the general formula (X<SP>2,3</SP> = H, NH 2 , OH, OMe; R = Me, Et) and their hydrochlorides are prepared by oxidizing an erythro-threo compound of the formula (X, X<SP>1</SP> = H, NO 2 , OH, OMe) and catalytically hydrogenating the resulting compound of the formula optionally followed by salt formation. The starting materials are prepared by reacting the corresponding benzaldehyde and nitroalkane.
Patent GB-628220-A (GB)
Title: An improved apparatus for protecting electrical apparatus against overload and/or unbalance
IPC: H01H71/02
Filed: 1947-09-23
Abstract: 628,220. Two-part couplings associated with switches. ELECTRICAL APPARATUS CO., Ltd., and WALTON, J. R. Sept. 23, 1947, No. 25827. [Class 38 (i)] [Also in Group XXXVII] A circuit-breaker of the character disclosed in Specification 553,154, [Group XXXVII], comprises a base-part 12 carrying terminals 15 for connection to the supply and the protected apparatus, and a removable part 11 carrying the contacts, contact-actuating mechanism (not shown), and the current - sensitive members 19, one per phase. The part 11 is secured to the base 12 by screws 47 threaded into flanges 21, 21<SP>1</SP> on the former and into the terminals 15, thereby completing the heating circuits of the members 19, which in this case are bimetal strips having two parallel heaters 26 connected between the terminals 15, the circuits being via left-hand terminal 15, flange 21, strip 24, heaters 26, strip 24<SP>1</SP>, flange 21<SP>1</SP> and right-hand terminal 15.
Patent GB-467141-A (GB)
Title: Improvements in and relating to card-clothing for carding engines
IPC: D01G15/86
Filed: 1936-09-23
Abstract: 467,141. Rubber compositions. CONTINENTAL GUMMI - WERKE AKT. - GES. Sept. 23, 1936, No. 25862. Convention date, Sept. 26, 1935. [Class 70] [Also in Group IX] Electrically - conducting rubber comprising equal parts of caoutchouc and graphite carbon, together with small proportions of zinc oxide, colophony, stearic acid, mercaptobenzothiazol and sulphur, is used for the rubber covering d of card-clothing, and, if desired, for the rubber b interposed between the fabric layers a. Specification 17082/87, [Class 120], is referred to.
Patent GB-229606-A (GB)
Title: Improvements in and relating to razor blade holders for stropping purposes
IPC: B24D15/10
Filed: 1924-10-31
Abstract: 229,606. Pezuto, P., and Errigo, T. Oct. 31, 1924. Razors, safety. A holder for safety razor blades during stropping has a hollow handle 15 which houses the body portion 10 of the holder when not in use, one open end of the handle being reduced at 16 to receive the reduced ends 13 on the body portion and, in the position for use, compressing the ends 13 so as to clamp the blade between the two resilient arms of the split body portion 10. The body portion and the handle are diamond-shaped in crosssection and the distance between the inner end of the part 16 and the open end 17 of the handle is equal to the distance between the connected end 12 of the arms of the body portion and shoulders 14 between the ends 13 and the rest of the body portion. The length of the ends 13 is greater than the length of the part 16 so that, when the body portion is housed in the handle, the ends 13 project a little and can be engaged to force the body portion out of the handle for use.
Patent GB-656498-A (GB)
Title: Fluid compressors
IPC: F04B39/04
Filed: 1948-10-05
Abstract: 656,498. Compressors. LAVIGNE, J. Oct. 5, 1948, No. 25964. [Class 8(i)] A hermetically sealed compressor-electric motor unit comprises a fluid-tight casing 3 containing a flexible bellows 4 which divides the casing into two separate parts enclosing the electric motor 1 and the compressor 2 respectively, the transmission of movement from the electric motor to the compressor being effected by means of a rod traversing said bellows in a fluid-tight manner. The upper part of the casing 3 is removable to gain access to the electric motor without opening the compressor enclosure. A pressure is maintained in the casing 3 equal to the mean of the compressed fluid. The casing 3 may be filled with an inert, gas having a relatively high thermal conductivity. In a modification the compressor is connected to the motor through a U-shaped rocking lever and one end of the bellows is secured to the lever close to the axis of articulation.
Patent GB-878867-A (GB)
Title: Capacitors
Inventor: GIRLING DOUGLAS STACEY
IPC: H01B1/00
Filed: 1959-07-29
Abstract: 878,867. Coating by vapour deposition. STANDARD TELEPHONES & CABLES Ltd. July 22, 1960 [July 29, 1959], No. 25965/59. Class 82(2) [Also in Group XXXVI] A capacitor comprising a glass tube 13, carrying fired silver contacts 15, 18, carries a first electrode 14 of evaporated aluminium which is coated with a dielectric layer 16 of SiO 2  formed by sputtering silicon in an atmosphere of oxygen and argon, a second electrode 17 being evaporated thereon. Dielectric and conductor layers 19, 21 are deposited and metallic end-caps soldered to the contacts 15, 18. In another embodiment (Fig. 1, not shown) the layers are deposited on one side of a flat glass plate. A vacuum turret apparatus (Figs. 3, 4, not shown) for depositing the layers is described.
Patent GB-906815-A (GB)
Title: Improvements in or relating to implement-attaching hitch mechanisms
IPC: A01B59/041
Filed: 1961-07-18
Abstract: 906,815. Tractor power-lift linkage mechanisms. INTERNATIONAL HARVESTER CO. July 18, 1961 [Nov. 28, 1960], No. 25969/61. Class 79(1). The lateral sway in the draft links 16 of a tractor power-lift linkage is controlled by providing two laterally spaced members 24R, 24L mounted on the tractor to presentcam surfaces to two co-operating rollers 40 mounted on the draft links and adjustable between two positions. In the first position, as shown in Fig. 2, the rollers co-operate with cam surfaces 29, 30 and 31 thereby allowing a limited amount of lateral sway in the lowered position but preventing sway in the raised position. In the second position of the rollers, i.e. when the pin 41 occupies the notch 36F in member 34, the rollers co-operate with the flat surfaces 32 thereby preventing lateral sway in both the lowered and raised positions. Outward sway of the draft links when there is no implement attached is restricted by cones 43 secured to the fixing pins 42 of the links.
Patent GB-1096833-A (GB)
Title: Mooring catenas
IPC: B63B22/18
Filed: 1965-06-21
Abstract: 1,096,833. Electric conductors. E. BOSSA. June 21, 1965 [June 20, 1964], No. 26108/65. Heading H1A. [Also in Divisions B7, D1, F2 and H2] Submerged electric cables are supported by an assembly CA (Fig. 1) of floating elements 4 and ballast elements 6 located on a flexible core 1 (e.g. by locking elements 5) on successive sections of the core so that when immersed it will take up a catenary form. In the embodiment of Fig. 8, the core of members 1 support a pipe T surrounded by electric cables V, whereas in Fig. 9, the core of members 1 surrounds the electric cables V.
Patent GB-1009298-A (GB)
Title: Improvements in or relating to measuring apparatus
Inventor: HOLMES ROBERT THOMPSON
IPC: G01D5/34
Filed: 1964-06-24
Abstract: 1,009,298. Selective signalling systems. ROLLS-ROYCE Ltd. June 24, 1964, No. 26133/64. Heading G4H. The height of liquid in a column 2 or a dimension of an object is measured by a lamp 4 and photo-cell 3 which are moved along the column 2 to provide a variable duration signal to open gate 9, a perforated strip 5 being simultaneously moved between a further photo-cell 7 and a lamp 6 to provide a train of pulses which are passed through gate 9 to counter 19, 20 until the liquid/air interface is reached. The length of the air column above the liquid may be measured by the same method. The apparatus is applicable to the measurement of mercury columns in thermometers and barometers and also to the measurement of the dimensions of objects as disclosed in Specification 962,296.
Patent GB-1422687-A (GB)
Title: Pre-heating of combustion-supporting air of an internal combustion  engine
IPC: F02N19/08
Filed: 1973-05-31
Abstract: 1422687 Heating I C engine charge; flame glow plugs MOTOREN-WERKE MANNHEIM AG 31 May 1973 26135/73 Headings F1B and F1K A flame-producing glow plug 2 associated with a chamber 9 communicating with the air inlet conduit 1 for a compression ignition engine includes a tubular casing 4 in which the flame is formed. The casing 4 is open at one end 5 and has holes 3 through which air flowing in the conduit 1 passes. Some of the air flowing into the casing 4 through the holes 3 flows out of the casing through other holes 3 and the remainder flows out through the open end 5. Air also flows through the gap 10 between the casing 4 and the wall 8 of the chamber 9. The gap 10 has a width between one fortieth and one quarter of the width of the casing 4. The axis 7 of the plug 2 may be located in a plane which extends normal to the adjacent portion of the conduit centre line 13 and spaced from the centre line by a distance equal to half the width of the conduit 1 plus or minus half the width of the casing 4. Two plugs 2, Fig. 6 (not shown), may be arranged with the open ends 5 of their casings 4 facing each other and their axis may be aligned or offset. Two plugs 2, Fig. 3 (not shown), may be arranged one upstream of the other in relation to a conduit 1.
Patent GB-923300-A (GB)
Title: Improvements in and relating to machines for moulding soap, margarine and other plastic substances
IPC: A01J21/00
Filed: 1961-07-20
Abstract: 923,300. Vertical plunger moulding machines. G. MAZZONI S.p.A. July 20, 1961 [Aug. 1, 1960; April 16, 1961], No. 26299/61. Class 87(2). Plastic material e.g. soap and margarine is moulded by placing the material on a fixed die 6, moving a slide 2, and upper die 3 downwards to shape the material, and lowering a plunger 12 which causes a trimming ring 15 to cut away the excess material round the dies 3, 6. While the die 3 is being raised a plunger 18 and ejector 20 move down to detach the shaped article P from the die 3, then a suction cap 31 transfers the shaped article P from the die 3 and discharges it by compressed air on to a conveyer 33. Several articles can be moulded simultaneously by connecting such apparatus together, Fig. 2 (not shown).
Patent GB-895850-A (GB)
Title: Improvements relating to rail vehicle braking apparatus
Inventor: WASHBOURN JACK
IPC: B60T13/66
Filed: 1959-07-31
Abstract: 895,850. Electro-pneumatic brakes. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. July 28, 1960 [July 31, 1959], No. 26301/59. Class 103 (1). Rail vehicle braking apparatus has a triple valve 14 controlling communication of the brake cylinder pipe either with the reservoir 17 or atmosphere, depending on the position of a pressure-sensitive element 25 separating two chambers 26, 27, a change-over valve 33 enabling communication between the chamber 26 and the brake cylinder or the pipe 11, and electromagnetically-operated valves 36, 37 for controlling communication of the chamber 27 with the reservoir 17 or with atmosphere. As shown, changeover valves 33 and 40 are set for electro-pneumatic operation, valves 36 and 37 being energized so that the chamber 27 is vented, this action in turn lowering a hollow stem 23 to vent the brake cylinder through pipe 24, and the brakes are released. The brakes are applied by de-energizing the valves 36 and 37 so that compressed air flows into the chamber 27 from the reservoir 17 to push up the element 25 so that a like pressure is created in the brake cylinder. The magnetic valves are controlled from train wires 12 and 13, a further train wire 43 being fitted with a low-pressure switch 42 as a safety device to ensure brake application should train pipe pressure fall. For straight pneumatic operation, the changeover cocks 33 and 40 are set to the positions shown in dotted lines.
Patent GB-422775-A (GB)
Title: Improvements relating to electric switches for alternating current
IPC: H01H33/44
Filed: 1934-09-13
Abstract: 422,775. High - tension switches. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Sept. 13, 1934, No. 26338. Convention date, Sept. 13, 1933. [Class 38 (v)] Sparking, preventing, and arc - rupturing devices; pneumatic actuation.-In an A.C. switch provided with means for quenching the arc at break in the fraction of a half period of the current, a switch-opening operation is commenced at a point in dependence upon the current phase, the arrangement being such that the actual separation of the contacts begins at such a time interval before a zero current passage that at the moment the current is passing through zero, the contacts are separated by a sufficient distance to prevent the re-striking of the arc. In the arrangement shown, the movable contact 4 is carried by a piston 5 and is separated from the fixed contact 3 by admitting gas under pressure through a tube 15. The pressure gas also provides a pneumatic blow-out for the arc. The opening of the switch is initiated by a valve 14 operated by a winding 17 in a control circuit 30 which includes a saturated current transformer 2, a spark gap 19 and a switch 20 controlled by an overload relay 21. On overload, high potential peaks arise in the secondary of the current transformer 2 at the zero current points and cause sparking across the gap 19; if at the same moment the overload relay has closed the switch 20, the control circuit 30 is energized and the winding 17 opens the valve 14. Owing to the overlap of the contacts 3, 4, or to a lost-motion between the contact 4 and the piston, the contacts do not actually separate until a predetermined interval after the initiation of the switching-out operation, which has taken place at a zero point of the current, and this interval is so adjusted that at the next zero after the contacts have separated, they are sufficiently far apart for the extinction of the arc. After the circuit has been interrupted at the contacts 3, 4, a switch 7 is operated by a piston 9 in a cylinder 23, to which compressed gas is admitted by a pipe 10 of small crosssection. In reclosing, the contacts 3, 4 are closed by a spring 24, and the switch 7 is then closed by admitting compressed gas to the other side of the piston 9 through a valve 12. A hand switch 22 is provided in the control circuit 30 for effecting an optional switching- out operation. For three-phase currents, each pole of the switch may be provided with a switching-out device, the phases being interrupted independently, or the arrangement may be such that only the switching-out device for the first phase to be interrupted receives the release impulse from the mains, while the switching-out devices for the remaining phases receive a release impulse from the release device of the first phase after a predetermined time.
Patent GB-958732-A (GB)
Title: Snap acting mercury switch
IPC: H01H5/06
Filed: 1962-07-10
Abstract: 958,732. Fluid actuation of switches. K. F. KOW. July 10, 1962, No. 26468/62. Heading H2B. One or more mercury tubes 7 mounted in a holder 6 on a rocker shaft 3 are actuated with a snap action by an operating shaft 5 via a spring toggle mechanism 20, 21. The shaft 5 has a stop 25 and is actuated by a handle which may be connected to a liquid-level responsive float.
Patent GB-425917-A (GB)
Title: System of verticle coupling of submersible weapons, and particularly mines
IPC: F42B22/24
Filed: 1933-09-27
Abstract: 425,917. Submarine mines. GINOCCHIO, M., 15, Piazza C. Battisti, La Spezia, Italy. Sept. 27, 1933, No. 26617. [Class 9 (ii)] [See also Group XXXVII] Submerged mines B, G, normally held by a buoy C and anchor D respectively, are connected by a cable A fitted with electric switches I the operation of which by impact of a submarine vessel releases the mines to explode by percussion or delay-action. Fig. 3 shows an electrically - actuated device N for anchoring the mine in which an eyebolt x<3> connected to the anchor D, or buoy C, is normally secured to a spindle x<1> by means of a pin x<4> engaging the lapped ends of the bolt and spindle. The latter is normally held in the position shown by a pair of balls f seated in a groove in the spindle but is forced outwardly, by a spring l, when a piston s moves to present its apertures f<1> opposite the balls. This movement of the piston is effected, when one of the switches I is actuated, by a detonator d and charge k. Fig. 2 shows a switch-device comprising a pair of normally-spaced spring-contacts s<1>, s<2> in a frangible casing s which is broken by one of a pair of tumbler-levers c when either of a pair of spring-pressed plungers p is moved inwardly by external impact. Fig. 4 shows a modification in which the switch-device s<1>, s<2> in a frangible casing 1 is embodied in a connector in the mine-supporting cable 10. A bell 2 is normally prevented from displacement on the cable by means of a split band 6 connecting the bell to a collar 13. The ends of the band 6 are connected by a strip 6<b> which is severed when the mines are submerged by the pull of a cord 9 actuating a pivoted cutter 7. The expansion of the band 6 admits water to a soluble holding-pin 5 to prime the device so that the switch s<1>, s<2> may be actuated by impact against the edge 15 of the bell 2.
Patent GB-384628-A (GB)
Title: Improvements in safety razors
IPC: B26B21/18
Filed: 1932-09-26
Abstract: 384,628. Safety razors. FISCHER, R. and SCHUBERT, 0., Oberkotzau, Upper Franconia, Bavaria, Germany. Sept. 26, 1932, No. 26681. Convention date, Sept. 25, 1931. [Class 30.] In a safety razor of the kind wherein the blade 6 is supported along its centre on an interrupted knifeedged ridge 5 on the guard 2, the clamping-plate 1 is sufficiently arched to prevent its contact with the blade except along the extreme edges 8 of the plate, which edges may be toothed. The blade is thereby given more freedom of movement during shaving. The blade is clamped and located only by a square clamping-screw 3 on the plate 1, passing through complementary apertures in the blade and guard.
Patent GB-850055-A (GB)
Title: Circuit arrangement for the drive of a step-by-step selector such as used in telephone systems
Inventor: ROTT HILBERT
IPC: H01H67/06
Filed: 1957-08-23
Abstract: 850,055. Automatic exchange systems. TESLA NARODNI PODNIK. Aug. 23, 1957, No. 26685/57. Class 40 (4). In an arrangement for stepping a switch by interaction of its magnet M and a relay R, the latter in operating operates M which connects an opposing winding R2 in series with the main winding R1 of the relay R so that the latter releases immediately so completing a re-energizing circuit for R1. However, R is rendered slow to operate by the short circuit of its winding R2 until M releases, thereby enabling the release of M to take place before R is reoperated. A plurality of magnets M, M<SP>1</SP> may be stepped in synchronism by this arrangement.
Patent GB-378682-A (GB)
Title: Improvements in smokers' ash-trays
IPC: A24F19/00
Filed: 1931-09-25
Abstract: 378,682. Smokers' ash-trays and cigarette rests. STEEDE, G. F., 74, Stephens Green, Dublin. Sept. 25, 1931, No., 26713. [Class 130.] Ash-trays are provided with a cage-like support 7 for a cigarette, preferably carried by a stem 8 extending upwards from the bottom or side of the tray. As shown, the support 7 is conical and inclined and comprises rings 9, 10 connected by bars 11. Two trays 4, 5 are combined with a matchbox holder 6. In modifications, (1) the supports 7 are attached to the ends of a trough-shaped tray, and (2) a single vertical stem carries a group of radiating supports such as 7.
Patent GB-1413322-A (GB)
Title: Disperse monoazo dyestuffs
IPC: C09B29/08
Filed: 1972-06-08
Abstract: 1413322 Disperse monoazo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 14 May 1973 [8 June 1972] 26808/72 Heading C4P New monoazo dyes of formula wherein U is hydrogen, chlorine, bromine, cyano, lower alkyl, lower alkoxy or a group of the formula -CONT<SP>1</SP>T<SP>2</SP>, -COOT<SP>3</SP> or -SO 2 T<SP>3</SP>; V is hydrogen, chlorine, bromine, cyano or lower alkoxycarbonyl; W is hydrogen, cyano, nitro, thiocyano, chlorine, bromine or a group of the formula -SO 2 NT<SP>1</SP>T<SP>2</SP>, -COOT<SP>3</SP> or -SO 2 T<SP>3</SP>; Q is hydrogen, chlorine, bromine, lower alkoxy or a -COOT<SP>3</SP> group; R is cyano lower alkyl; A<SP>1</SP> represents a lower alkylene radical; X is cyano, lower alkoxy, lower alkoxy lower alkoxy, lower alkoxy lower alkoxy lower alkoxy, chlorine, bromine, lower alkoxycarbonyl, lower alkylcarbonyl, optionally substituted phenoxy carbonyl or optionally substituted phenoxy; Y is lower alkoxycarbonyl, lower alkylcarbonyl, optionally substituted phenylcarbonyl, optionally substituted phenoxycarbonyl, phenyl lower alkoxycarbonyl, lower alkylsulphonyl, optionally substituted phenylsulphonyl or N-optionally substituted aminocarbonyl; T<SP>1</SP> is hydrogen or alkyl; T<SP>2</SP> is hydrogen, alkyl, phenyl, phenylalkyl or cycloalkyl; and T<SP>3</SP> is alkyl, phenyl, phenylalkyl or cycloalkyl, are prepared by axo coupling. They are used to colour polyesters in the mass or in fibre form in yellow to red shades.