baber/WOPTO huggingface dataset:
Patent GB-654746-A (GB)
Title: Improvements relating to the concentration of aqueous formaldehyde solutions by distillation
IPC: C07C47/04
Filed: 1948-10-25
Abstract: An aqueous solution of formaldehyde is vaporized, the vapours are submitted to partial condensation at sub-atmospheric pressure, the remaining vapours are separated from the initial condensate and are condensed separately to give the required concentrated aqueous solution.  It is preferred to condense 75 to 85 per cent by weight of the vapours in the initial condensation at a pressure not exceeding 312 mm.  In an example, a 9.8 per cent solution of formaldehyde was vaporized, and 85.5 per cent of the vapours was condensed at 125 mm. to give a very dilute solution of formaldehyde.  The remaining vapours were condensed separately to give a 37.1 per cent solution of formaldehyde which contained 55 per cent by weight of the formaldehyde in the original solution.
Patent GB-1236391-A (GB)
Title: Improvements in or relating to standard lamps
Inventor: LESSER DAVID JAKOB HANS
IPC: F21S6/00
Filed: 1967-06-16
Abstract: 1,236,391. Standard lamps. D. J. H. LESSER. 14 June, 1968 [16 June, 19671, No. 27820/67. Heading F4R. A standard lamp comprises an elongated translucent screen C disposed at the top of the standard A and surrounding one or more discharge or fluorescent lamps F, and a choke and starter unit K housed in the base B of the standard. The screen is preferably made of selfsupporting plastics material and has a lower metal fitting D, by means of which it is secured to the standard, and an upper metal fitting G which carries a socket for the upper end of the lamp F. The screen may, however, be supported by a framework, the bars of which are located within the screen and sufficiently far therefrom to avoid the formation of sharp shadows. The lower metal fitting may be pivoted to the standard or may be fixed thereto at any desired angle, and two or more screens, each surrounding one or more lamps, may be provided. The standard may consist of a set of telescopically interfitting tubes or may be jointed to facilitate storage.
Patent GB-1271642-A (GB)
Title: Improvements in or relating to teleprinters
Inventor: HOLLAND TERENCE JOHN
IPC: H04L17/00
Filed: 1968-06-05
Abstract: 1,271,642. Printer control circuits. MARCONI CO. Ltd. 1 May, 1969 [5 June, 1968; 12 June, 1968], Nos. 26710/68 and 27837/68. Heading G4H. Firing of a print hammer co-operating with a rotating type wheel is delayed by a variable amount depending on the speed of type wheel rotation. Signals from a phonic wheel attached to the type wheel shaft are fed to a diode pump providing a signal, preferably via a non-linear amplifier, to vary the charging time of a monostable circuit.  Reference has been directed by the Comptroller to Specification 1,160,785.
Patent GB-1336685-A (GB)
Title: Hydroxamic acid derivatives
IPC: A01N47/24
Filed: 1971-06-15
Abstract: 1336685 Hydroxamic acid derivatives E I DU PONT DE NEMOURS & CO 15 June 1971 [15 June 1970 14 May 1971] 28068/71 Heading C2C Compounds of formula R 1 C(Cl)=NOH, in which R 1  is methyl, methoxymethyl or ethyl, are prepared by chlorination in an inert solvent containing at least 10% wt. of dimethyl formamide. Compounds of formula R 1 C(SR 2 )=NOH, in which R 1  is as specified above and R 2  is C 1-3  alkyl or cyanoethyl, are prepared by reaction of a compound R 1 C(Cl)=NOH prepared as specified above with a meroaptan R 2 SH and a base, under solvent conditions as specified above. Compounds of formula in which R 1  and R 2  are as specified above and R 3  is hydrogen or methyl, are prepared by reaction of a compound R 1  C(SR 2 ) =NOH prepared as specified above with a compound R 3 NCO. Cyanic acid may be generated in situ by reaction of an alkali metal cyanate and a mineral acid. The products are insecticides.
Patent GB-603560-A (GB)
Title: Improvements in and relating to the cooling of the pistons of multi-cylinder two-stroke internal-combustion engines
IPC: F01M1/06
Filed: 1945-10-25
Abstract: 603,560. Cooling pistons. WERKSPOOR N. V. Oct. 25, 1945, No. 28140. Convention date, Aug. 26, 1943. [Class 122 (i)] [Also in Group XXVII] In a two-stroke internalcombustion engine in which scavenging pump pistons 10 are driven from the engine pistons by beams 15, lubricant or other cooling fluid is supplied to the pistons through tubular pivots 17 of the beams. These pivots are fitted between the cylinder supporting columns which have aligned passages, the cooling liquid being supplied at one end by a pump. It flows through passages in the connecting rods 15, cross-head 6 and pistonrods 5, and returns by a second passage in each piston-rod. Branch pipes may lead it to the crank-shaft bearings.
Patent GB-362550-A (GB)
Title: Improvements in wind-shields for match boxes
IPC: A24F27/06
Filed: 1930-09-20
Abstract: 362,550. Wind-shields for match boxes. MIEVILLE, H., 22, Cravenhill Gardens, and REECE, H. J., 553, Garratt Lane, Wandsworth, both in London, and HADDAN, P., Oakwood, Gerrards Cross, Buckinghamshire. Sept. 20, 1930, No. 28163. [Class 18.] In a three-sided wind-shield adapted to be attached to a drawer-and-shell match box by a hinged tongue 7 inserted between the drawer 8 and the shell 1, the two opposite sides 2, which normally grip the box, are of triangular shape connected by a rectangular wall 4 provided with a longitudinal slot 5 and, when turned outwards about the hinge 6, the shield forms with the side wall of the shell a wedge-shaped chamber only open at one end through which a cigarette &c. may be inserted to be lit by a match inserted through the slot 5 and struck on the side wall of the shell. The sides 2 may be embossed outwards to provide a larger chamber and may be provided with bosses 12 to increase the frictional grip of the sides on the box. The tongue 7 may project slightly through the box and engage a catch 11 on the wall 4 to hold the shield in the closed position.
Patent GB-1492023-A (GB)
Title: Aescin polysulphuric acid esters
IPC: A61K31/245
Filed: 1976-07-07
Abstract: 1492023 Escin polysulphate esters DR MADAUS & CO 7 July 1976 [11 July 1975] 28231/76 Heading C2U [Also in Division A5] The invention comprises escin polysulphates (preferably containing 7-9 sulphate ester groups per molecule of escin) and pharmacologically compatible salts (e.g. Na) thereof; and their preparation from escin by reaction with chlorosulphonic acid in an electron-donor solvent (e.g. pyridine, dioxan or formamide) at up to 100‹ C., followed when required by salification. Crystalline escin is obtained by extracting comminuted seeds of Aesculus hippocastanum with an optionally aqueous C 1-3  alkanol, treating the extract with an acidic cation exchanger, and evaporating the treated extract. The salts of the above polysulphate esters are credited with oedema-reducing, antithrombitic, anti-exudative, anti-phlogistic and heparin-like properties, and may be made up with carriers into pharmaceutical compositions for topical and parenteral administration.
Patent GB-477642-A (GB)
Title: Improvements in and connected with steam superheaters
IPC: F22G7/14
Filed: 1936-10-17
Abstract: 477,642. Steam superheaters. BABCOCK & WILCOX, Ltd., and SPARKS, C. H. Oct. 17, 1936, No. 28240. [Class 123 (iii)] For withdrawing steam from an intermediate part of a multi-pass superheater, e.g. for attemperation or desuperheating, and returning it to a later or the last pass, a header 5 is divided by a partition or partitions 9, 10 into compartments 6 .. 8 connected to different passes and a tube 14 extends through an end of the header and a partition 10 to connect with a penultimate compartment 7, a connection 15 being made at the header end with the adjacent compartment 8. Steam flows from an inlet 16 into compartment 6, through the elements to a compartment 11 of a header 4, thence to compartment 7 and through tube 14 to an attemperator, returning through connection 15 and further elements to the outlet compartment 12 of header 4.
Patent GB-426964-A (GB)
Title: Improvements in or relating to taps and valves
IPC: E03D3/04
Filed: 1933-10-12
Abstract: 426,964. Slow-closing valves. NEWMAN, HENDER, & CO., Ltd., Woodchester, Gloucestershire, and ROST, R., 2f, Naunhoferstrasse, Leipsic, Germany. Oct. 12, 1933, No. 28249. [Class 135] A tap or valve for delivering a predetermined quantity of fluid comprises a slotted cylinder f communicating with the fluid inlet b and surrounding a spring-pressed valve mechanism normally preventing communication with the outlet d, and a spring-pressed outlet tube which when raised also raises the valve mechanism, communication between the inlet and outlet being established for a predetermined period when the tube is allowed to fall. The tube l is pressed downwardly by a spring u and can be moved upwardly by a handle x to an extent determined by a set-screw y, Seated on the inner end of the tube is a valve member k with a stem n extending through a second valve member m slidable in the cylinder f and normally seating on a ring i with a small clearance between it and the member k. A spring p of less strength than the spring u normally holds the members k, m in their lower positions. The inlet b communicates with the inside of the cylinder f through slots g in the cylinder f and a passage way 10 in the member m. A passage way 11 extends through the valve k but is normally closed by the guideway in the valve m. When the handle x is depressed, the tube l and member k are first moved upwardly until member k abuts against the member m and the end of the passage 11 is in communication with the inside of the cylinder f so that any water therein can pass into the tube l. Continued movement of the handle x lifts all the members l, k, m, as a unit, flow only occuring through the passage 10. When the handle x is released, the tube drops much more rapidly than the members k, m due to the difference in the strengths of the springs p, u, so that for a limited period the tube l is in full communication with the inlet b. In a modification, the cap e of the casing a is replaced by a fluid-containing vessel so as to obtain a greater velocity of flow due to the increased pressure obtained.
Patent GB-1399739-A (GB)
Title: Apparatus for the formation of a selvedge on a fabric woven in a shuttle-less weaving loom
IPC: D03D47/42
Filed: 1972-06-16
Abstract: 1399739 Knitted selvedges; shuttleless looms ADRIANO GARDELLA SpA 16 June 1972 [21 June 1971] 28360/72 Heading D1E A shuttleless loom has a selvedge knitting needle 21 that is moved rearwardly, pivoted upwardly over a weft insertion needle 3, is pivoted downwardly to engage one leg of the weft loop 114 inserted by the needle 3 and is then moved forwardly, as the insertion needle 3 retracts, to knit the selvedge loops A. The knitting needle 21 is carried by a shaft 31 reciprocated by a rod 24 and pivoted upwardly against the action of a spring 37 by a claw 32 engaging a detent 42 which is pivotal, against a spring 43, to release the claw 32 and thus lower the needle to engage the weft loop. At beat-up the reed 55 on the sley 56 pushes the weft loop under a tooth 53 of a pivoted clamp 51 which holds the weft loops whilst the needle 21 moves rearwardly to knit. A weft stop motion 17 is provided.
Patent GB-1077304-A (GB)
Title: Improvements in the mounting of push button overload circuit breakers
IPC: H01R13/713
Filed: 1964-07-09
Abstract: 1,077,304. Mounting automatic circuitbreakers; two-part couplings. ELLENBERGER & POENSGEN G.m.b.H. July 9, 1964 [Nov. 27, 1963], No. 28417/64. Headings H2B and H2E. An automatic circuit-breaker generally similar to that described in Specification 828,754, has its terminals 4-10 designed to plug into a terminal board (12) (Figs. 5-9, not shown) and arranged in a single row so that when a plurality of such breakers are mounted side-by-side on the terminal board alternate breakers can be turned through 180 degrees to produce a staggered arrangement of the push-buttons 18. The insulating control member 24 is provided with a large recess 35 serving as an arc extinguishing chamber for the contacts 13, 14. The terminal board (12) is provided with a plurality of holes (69) each of which receives a socket member 11 retained in place by a step 73 and a resilient projection 71. The lower end of each socket member 11 is formed with a plug portion 74 which can be engaged by a socketed cable connector 75.
Patent GB-317254-A (GB)
Title: Improvements relating to feed water systems for condensing steam plant
IPC: F22D11/06
Filed: 1928-10-03
Abstract: 317,254. Robinson, P. J. Oct. 3, 1928. Feedwater, supplying.-In a feed-supply system comprising a surge, tank 6 under subatmospheric pressure arranged between the condenser extraction pump 2 and the feed pump 5, to facilitate deaeration of the water in the surge tank, the water is agitated or circulated and is maintained at a temperature above the saturation temperature corresponding to the pressure in the tank. The feedwater may be passed through a heater 3 between the condenser and feed pumps, and a part of it may be continuously circulated through the upriser pipe 7, the surge tank and a pipe 9 connecting the bottom, of the tank to the condenser 1. A pipe 13 conducts overflow water to a second tank 11 as described in Specification 233,046. Instead of circulating the water, heated water may be, taken from the delivery side of the feed pump and sprayed over the surface of the water in the surge tank. In this case, the heater is arranged between the pipe 7 and the feed pump. In further modifications, the water in the surge tank is agitated mechanically, or live steam is injected into the water.
Patent GB-970240-A (GB)
Title: Incandescent electric lamps combined with synthetic resin light filters
IPC: B60Q3/04
Filed: 1963-07-19
Abstract: 970,240. Indicator or like lamps and filters therefor. M. MORSE. July 19, 1963, No. 28575/63. Heading F4R. A generally cylindrical electric lamp 14 with a hemispherical end 22 is mounted in a tubular sleeve 13 having a projecting lip with a chamfered edge and a light filter 21 of similar shape to the lamp but terminating in an arcuate element 23 for engaging the lip is slipped thereover. Two or more such lamps may be mounted in sleeves in an insulating block 12 supported by a rod.
Patent GB-535905-A (GB)
Title: Improvements in or relating to time base circuits for television receivers
IPC: H03K6/00
Filed: 1939-10-24
Abstract: 535,905. Valve generating circuits ; television. STANDARD TELEPHONES & CABLES, Ltd., SHANNON, D. S. B., and CHATTERJEA, P. K. Oct. 24, 1939, No. 28597. [Classes 40 (iii) and 40 (v)] For imposing an oscillation, Fig. 7, on the charging stroke of a time-base circuit for line scanning in television, a resonant circuit tuned to a high frequency is shock-excited by the fundamental frequency. The condenser C1, charged through R2 and discharged through a gas-filled or hard valve VI, has in series therewith an inductance L, which may be tuned by a series or parallel capacitor. The inductance L may be coupled to a coil in the grid circuit, Figs. 5 and 6 (not shown). A scanning beam, controlled by such a circuit, follows a slightly zig-zag or sinusoidal course, thus compensating for any space uncovered by the light spot.
Patent GB-504353-A (GB)
Title: Improvements in and relating to the construction and use of liquid containing phials
IPC: F23Q2/42
Filed: 1937-10-20
Abstract: 504,353. Self-feeding brushes. WERTHEIMER, H. F. Oct. 20, 1937, No. 28613. [Class 19] [Also in Groups VI and XI] A gelatine or like sealed phial with a restricted neck 2 is provided with a wick 3, Fig. 1, or a brush 5, Fig. 4, and with a metal or other rigid sleeve 4 within the neck to prevent collapse of the neck when this is cut with a knife to open the phial. An external sleeve 6, Fig. 4, may also be provided.
Patent GB-265312-A (GB)
Title: An improved high ratio reduction gear for application to the tuning controls of wireless telegraphic apparatus and the like
IPC: H03J1/14
Filed: 1925-11-13
Abstract: 265,312. Parr, G. W. Nov. 13, 1925. Wireless tuning-apparatus, adjustment devices for.-Coarse and fine adjustment mechanism for wireless tuning apparatus and precision instruments in which the fine movement, obtained by frictionally driven epicyclic gear, comprises a sun member, planet members, and an outer annular ring, is so constructed that the planet members 'contact with the face of the sun member close to its axis of rotation and on that side of the sun member remote from its driving shaft which does not extend beyond the planet members. In one form, Fig. 1, the sun member comprises a conical or spherical head c<2> on a slow motion spindle c located in the tubular main shaft a<3>. Pins d<1> on diametrical arms d secured to the shaft a<3> carry planet discs d<2> seated in ball cups d<5>. The planet discs are pressed into engagement with the sun member and with an annular member e secured to the bottom plate of the condenser by an adjustable spring-pressed plate d<6>. The plate spring d' may be replaced by helical springs on the pins d'. In another construction, the gearing is located in the. operating-knobs. The head c<2> may be provided with a small central projection to assist in assembling the mechanism.
Patent GB-950497-A (GB)
Title: Pumpable well tool
IPC: E21B23/08
Filed: 1961-08-08
Abstract: 950,497. Wells. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Aug. 8, 1961 [Aug. 10,1960], No 28668/61. Heading E1F. A well tool adapted to be pumped through well tubing 23 having an open lower end and a stop 38 positioned therein comprises a body 50 adapted to pass through the tubing but be stopped by the stop, a carrier secured to the top of the body and adapted to be pumped through the tubing, a flexible cable housing 53 at the lower end of the body, a length of cable 54 normally stored within the housing and secured to the housing and to a releasable closure 56 for the housing, and means 67 connected to the bottom of the closure for engaging a device 46 within the well. The carrier comprises tubular members 71, 72 carrying seals 74, 75, and a check valve 91 controlling flow through the members. The parts of the tool are connected by flexible joints which permit the tool to be pumped through a pipe running along the sea bed to the sub-aqueous well containing the tubing 23 and a parallel tubing 24. When the tool is in the pipe and fluid is pumped to the well some of the fluid enters ports 86 to expand the seal 74 so that the tool is moved through the pipe and down the tubing 23, the valve 91 opening so that fluid pressure stiffens the housing. After the tool has seated on the stop the pumping pressure is increased to force the colosure and means 67 from the housing, the means dropping to engage the valve 46. Pressure is removed from the tubing 23 and fluid is pumped down the tubing 24 some of the fluid entering ports 87 to expand the seal 75 so that the tool is moved up the tubing 23 to remove the valve 46. The tool may be used to run devices into the well. Specification 942,343 is referred to.
Patent GB-204924-A (GB)
Title: Improvements in or relating to chaplets for use in foundry work
IPC: B22C21/14
Filed: 1922-10-23
Abstract: 204,924. Arthur, A. E., Lambert, G. E., and Smith, A. Oct. 23, 1922. Chaplets have the heads 3, 7 which may be variously shaped adjustable along the stem as by screwing. Both ends of the stem may be slotted for a screw driver. In a modification one of the heads is integral with or fixed to the stem.
Patent GB-204226-A (GB)
Title: Door anti-vibrator for wheeled vehicles
IPC: E05F5/02
Filed: 1922-10-23
Abstract: 204,226. Nicholls, G. H. Oct. 23, 1922. Rattling of doors, preventing.-A device to prevent rattling of doors on wheeled vehicles consists of a spring- pressed plunger B in a housing sunk in the striking edge of the door and a suitablyshaped plate H, Fig. 4, fixed to the jamb in position to engage the plunger. The plunger and plate are bevelled to facilitate engagement. The plunger is retained in the casing by a screw entering a slot E.
Patent GB-1116790-A (GB)
Title: Improvements in or relating to a rotary-percussion drill bit for drilling boreholes
Inventor: KELLY JOSEPH LEONARD
IPC: E21B10/56
Filed: 1966-03-14
Abstract: 1,116,790. Boring earth &c. HUGHES TOOL CO. 14 March, 1966, No. 28755/67. Heading E1F. A modification of the rotary-percussive bit according to Specification 995,599 has the lower peripheral surface 6B, which contacts the wall of the hole during drilling, less than the product n x d x D where n is the number of heel inserts 11, d the diameter or average cross sectional dimension of the heel inserts and D the diameter of the bit. Specification 1,116,078 is referred to.
Patent GB-1119290-A (GB)
Title: An electronic flashing device
IPC: H03K3/282
Filed: 1967-06-22
Abstract: 1,119,290. Lamp flasher circuits. SWFSPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. 22 June, 1967 [5 July, 1966], No. 28779/67. Heading G4F. [Also in Division H3] A flasher circuit comprises a multivibrator having frequency determining capacitors and filtering capacitors of the same nominal value. The capacitors are pregraded into three ranges of actual value, low, medium and high and the frequency determining capacitors are either both selected from the medium range, or one from the high and one from the low.
Patent GB-788253-A (GB)
Title: Improvements in or relating to pistons for pumps, blowers, internal combustion engines, or the like
Inventor: TEEGEN HERMANN
IPC: F16J1/04
Filed: 1955-10-11
Abstract: 788,253. Pistons. DIESEL ENGINE CO. OF TEXAS. Oct. 11, 1955, No. 28871/55. Class 122 (1). A piston for pumps, blowers, &c., comprises an expansible hollow cylinder consisting of a plurality of flat rings 1, Figs. 2 and 3, made from a single piece of material and lying tightly upon each other with the interconnecting portions of adjacent rings shaped to a stepped formation 3, and a sealing member 6 of truncated-conical shape urged into the complementary-shaped interior of the cylinder. Sealing is effective in one direction only in the device shown in Fig. 3 by reason of the higher fluid pressure at the lower end of the piston and, if desired, a stop plate 8 may be screw-threaded into the upper side of the cone 6 to prevent the latter from dropping out should the sealing pressure be reduced. A seal effective in both directions is provided by means of two sealing cones 11, 12, Fig. 4, engaging in tapered seats in opposite ends of the piston. In the device shown in Fig. 5, the piston consists as before of a sealing cone 14 and integrally-formed rings 15, the parts being held together in sealing engagement with the cylinder 13 by a compression spring 29 inserted between a bridge 18 and a flange at the upper end of a shaft 16 extending from the cone; alternatively, the spring is inserted between the upper ring and a plate secured to the upper end of the shaft 16.
Patent GB-587307-A (GB)
Title: Improvements in or relating to hygrometers
IPC: G01N25/64
Filed: 1945-10-31
Abstract: 587,307. Hygrometers. NEGRETTI, H. N., NEGRETTI, P. E., and GREGORY, H. SPENCER-. Oct. 31, 1945, No. 28950. [Class 97 (iii)] In a hygrometer using wet and dry thermometers, heat is supplied to the heat-sensitive part of the wet thermometer to compensate for the heat lost due to evaporation, the heat supplied being measured to determine the humidity of the air. In the embodiment shown in Fig. 2, a dry thermo-junction 5 and a wet thermo-junction 6 in circuit with a galvanometer 21 and arranged to give a null reading thereon when the junctions are at the same temperature, are located in a duct 11 through which air is drawn by a fan. The wet junction 6 is heated by a coil 10 connected in series with an ammeter 18 and regulating resistance 17 to regulate the heating current until the galvanometer 21 gives a zero reading. More than two junctions may be used in series with the galvanometer 21 as shown in Fig. 3 and arranged alternately as wet and dry junctions. A heating wire 9 is wound round all the wet junctions in turn and is in series with an ammeter and regulating resistance as in Fig. 2. The junctions are mounted on an insulating frame 22 which can be rocked intermittently to dip the wet junctions 6 into trough 24 of water. This latter may be fitted with a lid that can be automatically removed and replaced as frame 22 rocks.