baber/WOPTO huggingface dataset:
Patent GB-742594-A (GB)
Title: Preparation and purification of human serologically compatible protein derivatives for use as plasma extenders and products produced thereby
IPC: A61K31/16
Filed: 1953-01-23
Abstract: Protein derivatives are prepared by reacting a human serologically compatible protein with an anhydride or chloride of an aliphatic polycarboxylic acid in an aqueous medium in which the pH is maintained between 6 and 12, thereafter, while maintaining the temperature of the mixture above 5 DEG  C., adjusting the acidity of the reaction mixture to a pH of below 6 and approximating the isoelectric point of the protein derivative to precipitate this derivative as a coagulum, separating the coagulum from the reaction mixture and further working up the coagulum to remove therefrom any remaining incompletely reacted protein and any noncoagulated reaction products by reprecipitation of the coagulum from aqueous solution at the isoelectric point of the protein derivative, e.g. with the aid of sodium chloride, methanol, ethanol, isopropanol or acetone.  Suitable compatible proteins are gelatin, human serum albumin, human globulin and human globin, and especially gelatin degraded to an average molecular weight in the range of 15,000 to 36,000.  Specified polycarboxylic acid reactants are succinic, citraconic, itaconic, aconitic and maleic anhydrides and succinyl and fumaryl chlorides. The protein derivatives may be used as blood plasma extenders (see Group VI).  In typical examples: (1) powdered succinic anhydride is slowly added at 36 DEG  C. to a stirred aqueous solution of gelatin, the pH being maintained at 8.5 to 10 by regular additions of aqueous NaOH; the pH of the reacted mixture is then reduced to 2.7 by means of HCl and, on settling, an immiscible bottom layer of oily protein derivative forms which is separated and dissolved in distilled water; the pH of the solution is adjusted to 2.5-3.0 and sodium chloride added to reprecipitate the protein derivative which may be further purified by dialysis to remove entrained salt; (7) fumaryl chloride is reacted with aqueous gelatin following the method of (1), the reacted mixture is then acidified to pH 2.5 and the precipitated protein purified as before.  The mother liquors from the first precipitation of protein derivative may be cooled to precipitate other protein products of lower molecular weight.  Specifications 649,544 and 649,545 are referred to.ALSO:Blood plasma extenders comprise isotonic solutions of protein derivatives prepared by reacting human serologically compatible proteins with an anhydride or chloride of an aliphatic polycarboxylic acid (see Group IV(b)). Specified reactants are gelatin, human serum albumin, human globulin and human globin and succinic, citraconic, itaconic, aconitic and maleic anhydrides and succinyl and fumaryl chlorides.  Specifications 649,544 and 649,545, [both in Group IV(b)], are referred to.
Patent GB-901431-A (GB)
Title: Improvements in the production of cellulose triacetate filamentary materials
IPC: D01F2/28
Filed: 1959-01-20
Abstract: High tenacity cellulose triacetate filaments are produced by extruding a cellulose triacetate solution into a coagulating bath, stretching the swollen filaments thereby formed, by passage round a roll driven at a peripheral speed greater than the extrusion speed, while travelling through the coagulating bath, and then further stretching the filaments while still plastic beyond the driven roll. The filaments may be dried in a relaxed condition after the stretching operation.  The draw down ratio in the first stretching operation may be between 1,5:1 and 29,8:1 and in the second between 2:1 and 1,01:1.  The total draw down ratio may be between 30:1 and 3:1.  The cellulose triacetate may be dissolved in a halogenated hydrocarbon (e.g. methylene chloride) alone or containing a small proportion of a lower alkanol (e.g. methanol) and extruded into a coagulating bath containing the halogenated hydrocarbon and a larger proportion of a lower alkanol.  The weight per cent concentration of methylene chloride in the coagulating bath may be 75,25-T\sB5, where T is the temperature of the bath in degrees Centigrade.  The second stretching operation may be effected with the filaments immersed in a mixture of the ingredients of the coagulating bath, or in a gaseous medium with the filaments wet with and swollen by the coagulating bath liquid.  In an example, a 22 weight per cent solution of cellulose triacetate of 61,5% acetyl value in a mixture of 91 parts by weight of methylene chloride and 9 of methanol is wet spun into a 41/59 methylene chloride/methanol mixture maintained at 35 DEG C. at a linear speed of 11 metres per minute and the filaments thus formed are guided around a positively driven feed roll and after passing 175 cm. through air at room temperature, are passed about a take-up roll driven at a peripheral speed of 50 metres per minute.  The yarn is finally dropped to a screen and dried thereon in a relaxed state in air. The percentage stretch in the second stage is 10 to 60. Specification 826,098 is referred to.
Patent GB-1012334-A (GB)
Title: Improvements in or relating to endless conveyor belts
IPC: B66B21/10
Filed: 1962-05-31
Abstract: 1,012,334. Endless conveyers. PIRELLI, S.p.A. May 31, 1962 [June 7, 1961], No 20961/62. Heading B8A. An endless conveyer for pedestrians comprises a continuous flexible belt 1, driven by a drum 3 and passing over an idler drum 2, supported over the upper run by rollers 13 running on a pair of tracks 16a, 16b The rollers 13 are loosely fitted into a pair of endless chains 12 of elastomeric material and roll on the tracks 16a, 16b under the drag of the belt 1. The chains 12 serve to recycle the rollers 13, their weight on the return path being taken by a lower pair of tracks 17. For quietness the tracks 16a, 16b are faced with elastomeric material 16<SP>1</SP>. The rate of translation of the rollers 13 is reduced by reducing the diameter of the bearing section 13b as compared with the tubular belt supporting section 13a. A frusto-conical section 13c on the rollers 13 makes the rollers self-aligning. The chains 12 pass over pairs of idler sprockets 7a, 7b, 8a, 8b either or both of which may be omitted by extending the tracks 16, 16a, 16b and curving the ends to conform to the missing sprockets (Figs. 9a, 9b, not shown). In a further modification, the idler drum 2 may also be omitted (Fig. 10, not shown). The rollers 13 are fitted into alternate holes 12a, 12b in the chains 12, rods 14 carrying small wheels 156 of elastomeric material, with a diameter just sufficient to allow clearance with the bearing portions 13b, fit between adjacent rollers 13. Should the belt 1 come temporarily out of contact with one of the rollers 13, the wheel 15b following contacts the following roller and transmits drive to the preceding roller. Instead of the rods 14, pivot pins carrying a small wheel each side of the chains 12 may be provided (Fig: 6, not shown).
Patent GB-394413-A (GB)
Title: Improvements in pipe couplings
IPC: F16L19/05
Filed: 1932-01-23
Abstract: 394,413. Locking-nuts. LAMONT, J. H., 5, Meadowplace Road, Corstorphine, and WAUGH, J., Westridge, Ravelston Dykes, both in Edinburgh. Jan. 23, 1932, No. 2110. Addition to 394,354. [Class 89 (i).] In a pipe joint the nut D is locked by a key W in one of the slots of the split collar E, the key having a roughened surface which engages the roughened internal lip X of the nut.
Patent GB-1013961-A (GB)
Title: Improvements relating to rotary selector switches
Inventor: WRAY STANLEY WILLIAM
IPC: H01H19/11
Filed: 1962-01-19
Abstract: 1,013,961. Snap-action switches. HOOVER Ltd. Jan. 18, 1963, No. 2111/62. Heading H2B. In a rotary selector switch an operating lever 21, fixed to an operating shaft 15 actuates a moving contact arm 25 by means of a tongue 22 on the lever 21 forcing apart the ends 29, 30 of a coil spring 28 so that lugs 24 on the lever 21 engage a hooked extension 27 on the moving contact arm 25 and rotate the arm so that the moving contact engages one of the fixed contacts 20 in the base 10 of the switch. The fixed contacts 20 are T-shaped with the stems passing through slots in the base 10 to form terminals and the part of the contact in the plane of the base 10 has a raised portion on either side so that after the moving contact arm has ridden up the inclined part, the spring 28 snaps the arm over to the next fixed contact. Surrounding the shaft is a bus-ring 32 in contact with the arm 25 and with a terminal tag 33. An interrupted annular rib 35 is provided to prevent the arm 25 from falling back into a fixed contact. An insulating tappet 39, for operating auxiliary make-and-break contacts may be provided in the " off " portion.
Patent GB-891726-A (GB)
Title: Fluid pressure feed mechanism
IPC: B23B47/22
Filed: 1959-01-20
Abstract: 891,726. Drilling-machine details. MITCHELL, W. H., and MITCHELL, J. P. Jan. 20, 1959 [Jan. 22, 1958], No. 2115/59. Class 83 (3). A fluid-pressure feed-mechanism comprises a piston-and-cylinder unit 4, 9, a crosshead 10 on the piston-rod 8 for transmitting the feed, valve means 14, 15, 16 controlled by a striker 13 on the piston-rod for controlling the supply of pressure-fluid to cylinder 4, valve means 22 in the fluid-pressure line 21 between valve 16 and the cylinder and including a restrictable passage 26 and an exhaust passage 25, and a relief valve 33. As applied to effecting a series of feed-strokes of a drill-spindle 5, the mechanism is in the form of an attachment mounted on the spindle-housing 3 by means of a bracket 2. Pressure-fluid is fed to the cylinder 4 through a stop-valve 35, filter 36, two-position valve 16 and needle valve 27 which is adjustable to vary the feed-speed. At the end of the feed-stroke, striker 13 actuates valve 15 to reduce the pressure at one end of valve 16, causing valve 16 to be re-set and connecting line 21 to exhaust. Thus the feed-piston is returned by a counterweight, spring, &c., 19 and expels pressurefluid past ball-valve 25. At the end of the return stroke, striker 13 operates valve 14 to reduce the pressure at the opposite end of valve 16, re-setting valve 16 for another feed-stroke. Feed strokes may be started manually by operation of a valve 31 if valve 14 is isolated by a control screw 29.
Patent GB-675735-A (GB)
Title: Improvements in or relating to mechanical feeding apparatus for sisal or similar leaves
IPC: D01B1/32
Filed: 1951-01-31
Abstract: 675,735. Endless-belt conveyers. PEROTTI, C., and BONOMO, P. Jan. 31, 1951. No. 2423/51. Class 78 (i). [Also in Group IX] Apparatus for feeding sisal or similar leaves to a decorticator or other machine comprises an endless belt or band conveyer adapted to convey leaves from a feed point to a discharge point in proximity to the decorticator or other machine, the upper or operative flight of said conveyer being so arranged that the effective carrying or supporting surface thereof will be of stepped formation such that the leaves conveyed will be subjected during their passage to a series of drops each followed by a period of travel in an upwardly inclined path, the arrangement being such that the leaves will, during their passage on the conveyer, be spread into an even layer on the latter and will assume positions wherein they are parallel or substantially parallel to each other. In the embodiment shown, sisal leaves are fed to a decorticator by a conveyer comprising six belt conveyers 10 whose upper runs are guided round pairs of rollers 18, 19 to produce with the aid of plates 22 a stepped formation. Due to these steps and aided by adjustable plates 30, 31, the leaves, fed on to the conveyer down a shoot 24, form a single layer and become parallel to one another at right angles to the direction of travel of the belts. The ends of the leaves are aligned by a belt 26 passing round rollers 27. 28, the roller 27 being driven through worm gearing 29 from the shaft 21 of the adjacent roller 19. The densitv of the leaves is controlled by a vertically adjustable plate 25. The conveyer belts are driven from the decorticator by a belt 16 engaging a pulley 11 secured to a shaft 12 carrying belt pulleys 13, 14, 15.
Patent GB-1360735-A (GB)
Title: Method of and optical arrangement for adjusting a workpiece in a machine tool
IPC: B24B3/34
Filed: 1972-01-19
Abstract: 1360735 Eye pieces ALBERTO WALSERGYGI [trading as ALBERT WALSER PRAZISIONSMECHANIK & WERKZEUGBAU] 19 Jan 1972 [21 Jan 1971] 2549/72 Heading G2J [Also in Division B3] A crosshair in a microscope for use in adjusting the position of a workpiece in a machine tool (Division B3) consists of a plurality of concentric circles 19, mutually perpendicular reference lines 22, 23, and radial lines 25, 25'.
Patent GB-1241284-A (GB)
Title: Improvements relating to microscopes
Inventor: CHUECA MARIA DOLORES MANUA
IPC: G02B21/00
Filed: 1970-01-19
Abstract: 1,241,284. Electric battery lamps. M.D.M. CHUECA. 19 Jan., 1970 [21 May, 1969], No. 2552/70. Heading F4R. [Also in Division G2] A two-part pocket microscope comprises two tubular members 1, 10 adapted to be pushed together, end to end, the first tube 1 having an eyepiece 8, 3 and the second lower tube having an objective 11, a light source 20 and an intermediate slide holder 18. The upper end of the first tube is externally threaded to receive a sleeve 2 which retains a gasket 4 holding an eyepiece lens 3 seated on the upper end of an inner sleeve 5. As shown, a diaphragm 7 is also wedged across the tube and below it a sleeve 6 extends down to an inner circumferential ledge which carries eyepiece lens 8. The objective 11 consisting of lenses 12, 13 arranged with a separator 14 and a diaphragm 15, is housed in a cup-shaped member having an apertured base. The objective is movable within the lower tube by means of attached knob 16 which co-operates with a helical slot 17 in the casing 10. A cavity 19 is provided for retaining a sample slide. The lower part of tube 10 houses a light source 20 (Division F4), the holder 21 of which is gripped by one end of a conductive helica spring 22, the other end of which is coiled around the outside of battery 23. A plug 25 with a threaded control 24 forms the base of the tube 10 and controls the activation of the lamp by making or breaking the contacts 26, 27.
Patent GB-697810-A (GB)
Title: Improvements in cranes, more especially floating cranes, with variable counter-weights
IPC: B66C23/52
Filed: 1951-02-01
Abstract: 697,810. Pontoons. KLONNE, M., and KLONNE, A. Feb. 1, 1951. [Oct. 6, 1950] No. 2560/51. Class 113 (i). [Also in Group XXX] The base 2 of a floating crane is carried by a pontoon 1 in which an annular watertight tube8 is mounted in radially-arranged reinforcing plates 15. This tube is disposed below the rail 9 on which the base 2 travels.
Patent GB-227639-A (GB)
Title: An improved process for the manufacture of blasting detonators
IPC: F42B33/00
Filed: 1924-01-31
Abstract: 227,639. Eschbach, W. Jan. 31, 1924. Addition to 172,914. Blasting detonators.- Relates to the process of pressing detonators from above and from below while in dies d, Fig. 1, as described in the parent Specification, and consists in replacing the lower movable stamp by projections b, Fig. 3, on a stationary base a, these projections fitting into the dies .and having raised portions b<1> adapted to press the detonator from below and thereby from the cavity therein when the upper movable stamps are forced down.
Patent GB-1374317-A (GB)
Title: Histidine derivatives
IPC: C07D233/64
Filed: 1972-01-20
Abstract: 1374317 Histidine derivative RECKITT & COLMANN PRODUCTS Ltd 28 Dec 1972 [20 Jan 1972] 2695/72 Heading C2C The novel compound, N-(cyclopentylcarbonyl - L - histidyl)pyrrolidine, and pharmaceutically acceptable acid addition salts thereof are prepared by reacting cyclopentanecarboxylic acid or reactive functional derivatives thereof with N-(L-histidyl)pyrrolidine, or by reacting pyrrolidine with N-(cyclopentylcarbonyl)-L-histidine or esters thereof. p-Nitrophenyl cyclopentanecarboxylate is obtained by reacting cyclopentanecarboxylic acid with p-nitrophenol in the presence of N,N<SP>1</SP>- dicyclohexylcarbodiimide.  N - (L - Histidyl)pyrrolidine hydrochloride is obtained by hydrolysing N-(t-butoxycarbonyl- L-histidyl)pyrrolidine or the hydrogenolysis of N - (benzyloxycarbonyl - L - histidyl)pyrrolidine, both of which are prepared by reacting pyrrolidine with the appropriate L-histidine derivative. Pharmaceutical compositions contain the above novel compound or therapeutically acceptable acid addition salts thereof in association with pharmaceutically acceptable diluents or carriers. The compound inhibits the action of hypothalamic thyrotropin releasing hormone.
Patent GB-588206-A (GB)
Title: Improvements in and relating to doffing mechanism of flyer spinning and like frames
IPC: D01H9/04
Filed: 1945-02-05
Abstract: 588,206. Spinning. TAYLOR & CO., Ltd., C. F., THOMAS, J. S. F., HUTTON, P. L., and CROTCH, J. S. Feb. 5, 1945, No. 2871. [Class 120 (ii)] Flyer spinning and like frames have the bobbin lifting rail, normally formed of a number of sections 5 arranged end to end, mounted in discs or annular members 8 which are rotatable in bearings 9 mounted on vertical slidable guiderods 11 under the action of lifter rods 16, the ends 15 of which are adapted to enter sockets 14 in the members 8 to lock the bobbin lifting rail with the spindles of the bobbins 4 on which the yarn is to be wound, in a position co-axial with the axes of rotation of the flyers 2; on the bobbin rail being lowered into the doffing position by the rods 16, the ends 15 of the latter are disengaged from the recesses 14, permitting rotation of the bobbin rails for doffing the full bobbins and bringing an empty set into the upright position, in which they are locked by the lifting rods 16 engaging further sockets 14, after which the bobbin lifting rail is brought to the spinning position and subjected to the usual rising and falling movement. The discs or similar members 8 may form the connections between the sections of the bobbin lifting rail 5. A key or keyway 50 is provided at the end of the bobbin lifting rail, co-operating in the doffing position with a complementary member 51 fixed to a handwheel 53. The lower end of the lifter rods have pin-and-slot engagement with levers 19 mounted on shafts 20 which carry counterweights 22. Successive shafts are coupled together by arms 23 and links 24 or arms 25, 26 and links 27, 28. One link 28 is connected to a slide block 29 running in guides 30, and coupled to a shaft 31 which is in splined engagement with the handwheel 47. A nut 33 running on the threaded portion of shaft 31 is mounted on lever 34 having a floating pivot 35 in slot 36. A roller 38 on this lever engages a lever 39, which carries a roller 44 engaging the heart-shaped cam 45 in the operating position. On rotation of the handwheel 47 for doffing, the lever 34 is brought against a stop 54, further rotation causing movement of the slide block 29 and its associated parts to disengage the spigots 15 on the lifter rods 16 from their sockets 14, after which the bobbin lifting rail may be rotated by the handwheel 53. Specification 588,205 is referred to.
Patent GB-936784-A (GB)
Title: Improvements in and relating to free wheel hubs with brake
IPC: B62M11/14
Filed: 1962-01-25
Abstract: 936,784. Bearings. FICHTEL & SACKS A.G. Jan. 25, 1962 [Jan. 28, 1961; Feb. 3, 1961], No. 2915/62. Class 12 (1). [Also in Group XXXI] To reduce the minimum size of a freewheel cyclehub (see Group XXXI) parts of its inner mechanism are adapted to allow small diameter ball-bearing holders 18 and 34 to be assembled with their balls 16 and 32 in journals 14 and 30 on a bearing- ring 12 and a drive-member 26 respectively. Normally the minimum size of ball-holder that can be used is governed in the first instance by the overall diameters of a surface 60 on a part 66 integral with or keyed on to the ring 12 and which serves to expand the brake sleeve 54 and in the second instance by the diameter of a ring of projections 74 at the ends of inclined surfaces 72 on the drive member 26 which serve to clamp rollers 42 against the inner surface of the hub-shell 36 to transmit the drive in a forward direction only (Fig. 3). These diametral dimensions have minima fixed by functional considerations. In the first instance grooves 80 are cut through the surface 60 to permit the balls 16 in their holder 18 to pass through as in Fig. 6. In the second instance the number of balls in the holder 34 is divisible by the number of rollers 42 so that the balls 32 in their holders 34 pass over the surfaces 72 between the projections 74 without obstruction.
Patent GB-176975-A (GB)
Title: Improvements in machinery for the manufacture of ropes
IPC: D07B3/12
Filed: 1921-01-24
Abstract: 176,975. Fine Cotton Spinners & Doublers Association, Ltd., and Bardsley, A. Jan. 24, 1921. Machines for making.-In the manufacture of ropes in a rope-walk, a carriage carrying a top, behind which the strands are twisted together, is traversed along the walk by an endless rope. The cone or top A having grooves, in which the strands b are laid, is vertically adjustable on a carriage C, to which is. attached an endless rope F passing round pulleys F<1>, F<2>. The pulley F is coned and driven from the main driving-shaft rotating the twisting-hooks e to which the strands b are connected. The rope F is traversed along the pullev F' by an eye engaging a traversing-screw geared to the main driving-shaft so as to move the carriage at an increasing speed. Change-wheels may be inserted in the train of gears driving the pulley F' and the traversing-screw. The rope B being formed from the strands b is attached to a hook d on a carriage D, which is attached by a rope d<2> to a pulley D', so that the rope d<2> can be let off to allow for the decrease in length of the rope B.
Patent GB-178931-A (GB)
Title: Improvements in or relating to liquid fuel burners
IPC: F23D11/10
Filed: 1921-01-24
Abstract: 178,931. Maina, J. Jan. 24, 1921. No Patent granted (Sealing fee not paid). Lighting burners by electric devices.-In a spray burner, the atomized fuel is ignited by an electric arc, the poles f of the arc mechanism being, in some cases, withdrawn by levers after the burner is ignited.
Patent GB-1185551-A (GB)
Title: Improvements in and relating to Plug and Socket Connections for Electrical Switches
Inventor: GLOVER CHRIS
IPC: H01R4/50
Filed: 1967-01-20
Abstract: 1,185,551. Terminals. APPLIED ELECTRONICS & AUTOMATION Ltd. 12 Jan., 1968 [20 Jan., 1967], No. 3035/67. Heading H2E. [Also in Division H1] A multi-way rotary inert switch is mounted on an insulating base 1 and has its terminals 19, 20 permanently connected by leads 21, 22 to eyelet sockets 2, 3 arranged in two concentric circuits on the base 1. Plug-in connections for cables 24 comprise inner eyelets 23 into which the ends of the cables 24 are inserted with the bared ends 25 bent over for a push fit in the eyelet sockets 2, 3.
Patent GB-267095-A (GB)
IPC: C10B49/08
Filed: 1927-02-02
Abstract: 267,095. International Combustion Engineering Corporation, (Assignees of Runge, W.). March 4, 1926, [Convention date]. Gas-heating furnaces. - The gas pre-heater C consists of a combustion chamber 25 heated by burners 41 the hot gases from which pass through passages 35 to a mixing chamber 27. Gas entering by a pipe 15 passes through passages 26 in the top and end walls and through openings 33 leading to the mixing chamber 27. The mixed gas and combustion products pass over a baffle wall 36 and into a passage leading to the outet 4.
Patent GB-1531082-A (GB)
Title: Thermoplastic resin tape for packaging
IPC: B65D63/10
Filed: 1976-01-27
Abstract: 1531082 Thermoplastic straps T NAKANOSE 27 Jan 1976 03048/76 Heading A4X A thermoplastic resin tape for packaging includes embossed portions 2 surrounding spaced non- embossed portions 3. The total area of the non- embossed portions 3 is within 10% to 50% of the entire surface area of the tape which is embossed by feeding it between embossing rollers, Figs.3 and 4 (not shown). The non-embossed portions may be cross-shaped, Fig.6 (not shown).