baber/WOPTO huggingface dataset:
Patent GB-1131545-A (GB)
Title: Indole derivatives
Inventor: CHRISTENSEN SVEND AGE
IPC: C07D209/28
Filed: 1966-04-22
Abstract: 1,131,545. Preparing indole 3-carboxylic acid derivatives. DUMEX (DUMEX Ltd) A.S. 21 July, 1967 [22 April, 1966], No. 17809/66. Heading C2C. Indole derivatives of the general formula wherein R<SP>1</SP> is hydrogen, halogen, or a hydroxyl, amino, nitro, C 1 -C 4  alkyl or C 1 -C 4  alkoxy group, R 2  is hydroxyl, C 1 -C 4  alkoxy, NH 2 , or benzyloxy, R<SP>3</SP> is hydrogen, C 1 -C 4  alkyl, phenyl, or benzyl, and R<SP>4</SP> is hydrogen, halogen or C 1 -C 4  alkyl, are prepared by the Arndt- Eistert synthesis from the required 3-indole carboxylic acid, via the 3-acid chloride and 3-diazoketone. As a starting material, 1-(pchlorobenzoyl) - 5 - methoxy - 2 - methylindole- 3-carboxylic acid is prepared by reacting #-aminocrotonic acid ethyl ester with quinone to give 2-methyl-3-carbethoxy-5-hydroxyindole, which is methylated to the corresponding 5-methoxy compound, this being transesterified at the 3-position to the benzyl ester. The ester is acylated by a Schotten-Baumann reaction to 1-(p-chlorobenzoyl)-5-methoxy-2-methylindole-3-carboxylic acid benzyl ester, which is hydrogenated to give the required acid. This is treated according to the invention to yield the corresponding 3-acetic acid, which is optionally esterified, amidized or benzylated.
Patent GB-282623-A (GB)
Title: Improvements in or relating to the feeding of metal strips in suspended form through furnaces or other treating devices
IPC: C21D9/56
Filed: 1927-07-05
Abstract: 282,623. Watkins, W. E., (Assignee of Clarke, A. F.). Dec. 24, 1926, [Convention date]. Metal-heating furnaces; charging and discharging. - Metal strip is fed through a furnace or other treatment apparatus in suspended form and the tension is kept constant by maintaining, in a span of the strip beyond the furnace &c., a sag of predetermined degree. The invention is shown applied to the feeding of metal strip A through a furnace 2 having a cooling extension 5, the movement being effected by feed rollers 1 at the charging end and pulling rollers 7 located some distance from the exit end of the cooler 5. The feeder 1, in front of which are disposed cleaning and guiding rollers 41, 54, Fig. 4, comprises two pairs of rollers 8, 9 and 10, 11 driven by gearing from a motor 15, the upper roller of each pair being adjustable by means of worm and wheel mechanism 27, 28, and auxiliary cleaning means 65, 66, 67 being provided in front of, between, and beyond The rollers. The cleaning device 41 is carried by an extension 35 of the roller frame and comprises layers of felt 44, 53 carried by shoes 43, 52. The former is secured to a bar 42 adjustably suspended by screwed rods 45 from a bar 41 which is secured to a sleeve 38 arranged to be rotated about a vertical rod so that the upper cleaning pad may be swung aside when threading a strip through the apparatus. The guide 54 consists of upper and lower plates 63, 57, the former being carried by a cross-bar 60 which is vertically adjustable by means of a pair of screws 61 and handwheels 62 and also carries side members which prevent lateral movement of the strip. In order to maintain a constant tension in the strip, the pulling mechanism 7, which comprises rollers similar to those at the feeding end, is mounted on a truck 77, Fig. 2, which is movable on rails 79 and has attached to its rear end a variable weight 80 suspended by a cord 81 passing over a fixed pulley 82. To prevent the truck 77 moving too far under the action of the weight 80, a stop 87 is provided and the front side of the truck is connected by a normally slack cord 84 with a counterweight 83 supported on a bracket 86. Specification 279,787 is referred to.
Patent GB-686705-A (GB)
Title: Improvements in hydraulic direct acting suspension shock absorbers
IPC: F16F9/52
Filed: 1950-07-17
Abstract: 686,705. Hydraulic shock-absorbers. BOURCIER DE CARBON DE PREVINQUIERES, C. M. L. L. July 17, 1950 [July 15, 1949], No. 17843/50. Class 108 (iii). In a hydraulic suspension shock absorber having a piston arranged to move in a cylinder containing liquid, a permanently open longitudinal passage is provided between the piston and the cylinder to permit laminar flow of the liquid from one side of the piston to the other and the piston is guided by means of bearing surfaces formed on the piston and in contact with the cylinder wall, the bearing surfaces being spaced apart in a circumferential direction. In the arrangements shown, the piston is formed with notches 2 formed in a bearing flange 3 on the piston or notches 22, which may extend over the whole or part of the height of the piston. In another arrangement, Fig. 4 (not shown), the discontinuous guiding surfaces are formed on a flange at each end of the piston, which is of two-part constructon secured together by the piston rod. In a similar arrangement, Fig. 5 (not shown), a ring, or a number of superimposed rings of expansible material is or are mounted on the piston intermediate its ends to compensate for variations in viscosity of oil in the shock absorber cylinder. Specification 686,662 is referred to.
Patent GB-733276-A (GB)
Title: Printers' type angle-setting and locking block
IPC: B41B1/18
Filed: 1953-06-29
Abstract: 733,276. Printers' composing appliances. WOODS, E. Dec. 31, 1953 [June 29, 1953], No.' 17937/53. Class 100 (3). Chases; furniture; locking devices.-A device for setting and locking at a desired angle type, type blocks or stamping blocks comprises a square shaped metal frame or chase 1 provided with a circular aperture within which is fitted a segmental core 2a, 2b. The type, type blocks or stamping blocks' are fitted into the square aperture defined by the core and locked in position by means of bolts 3, threaded diagonally through the chase 1, and acting on bushes 4 located in slots in the chase 1. The angle at which the type or the like is set may be varied by unscrewing the bolts 3, rotating the assembled type and core 2a, 2b within the chase 1 to the desired position, and re-tightening the bolts 3.
Patent GB-949473-A (GB)
Title: Two new antibiotics and mixtures thereof and a process for their manufacture
Filed: 1960-05-20
Abstract: <PICT:0949473/C2/1> <PICT:0949473/C2/2> The antibiotics lankavamycin or lankavacidin or a mixture thereof are produced by cultivating Streptomyces violaceo-niger NRRL 2834 or a lankavamycin and/or lankavicidin-producing mutant thereof under aerobic conditions in an aqueous nutrient solution containing inorganic salts and a source of carbon and of nitrogen until the nutrient solution shows a substantial antibiotic activity, and the antibiotic lankavamycin and/or the antibiotic lankavacidin is/are then isolated.  The antibiotic(s) may be extracted from the culture filtrate with an organic solvent immiscible with water and purified by adsorption and extraction from the adsorbate, by distribution between an alcoholic aqueous solution and an organic solvent immiscible with water or by chromotography.  Lankavamycin forms colourless crystals which show a double melting point at 147-150 DEG C. and at 181-182 DEG C., [a ]20D=-93.8 DEG  (C=1.23 in ethanol), elementary analysis C=60.18%, H=8.75%, O=31.06%, CH3CO=11.49%, OCH3=8.67%, (C)CH3=20.54%.  The ultra-violet absorption spectrum shows a maximum at 289 mm  (log e=1.50) and the infrared spectrum in potassium bromide is shown in Fig. 1.  Lancavacidin forms pale yellow crystals which melt at 165-168 DEG C. and give a green colour reaction with ferric chloride solution. Elementary analysis gives C=62.71%, H=7.11%, N=2.87%, (C)CH3=12.60%. [a ]20D=-161 DEG  (C=0.967 in absolute ethanol). The ultraviolet absorption spectrum shows a maximum at 227 mm  (log e 1%=2.95) and the infrared spectrum 1 cm. in potassium bromide is shown in Fig. 2.  Pharmaceutical preparations comprise lankavamycin and/or lankavacidin in admixture or conjunction with a pharmaceutical carrier in forms such as tablets, dragees, ampoules, salves, creams, powders, suppositories, solutions, suspensions or emulsions.
Patent GB-1424658-A (GB)
Title: Hollow cathode gas discharge device
IPC: H05H1/24
Filed: 1974-04-24
Abstract: 1424658 Electron/ion beam apparatus HUGHES AIRCRAFT CO 24 April 1974 [25 May 1973] 17981/74 Heading H1D In a hollow cathode plasma discharge device comprising walls 32, 40 defining a hollow cathode space, one (32) of the walls being perforated so that particles can be extracted through the perforation into space exterior of the perforated wall, an accelerator electrode 24 positioned exteriorly of said hollow cathode space for accelerating particles passing out through said perforation, and a vessel 20 containing the perforated wall and the accelerator electrode and containing gas at subatmospheric pressure so as to cause conditions between the perforated wall and the accelerator electrode to be outside the breakdown region of the Paschen curve for the particular gas, the said walls include an anode wall 32 and a cathode wall 40 together defining the exterior boundaries of a lowpressure glow discharge plasma, the anode wall 32 being positioned so that it does not substantially intrude into the plasma, the ratio of anode area to cathode area being smaller than unity for low-pressure glow discharge plasma mode operation, and means 48 are provided for initiating glow discharge interiorly of said hollow cathode space so that glow discharge can be ignited by said initiation means and then transferred to said anode wall. The electron source shown is used to ionize the gas in a laser cavity 12 containing a sustaining electrode 18. Insulators 31 and 33 mounted on webs 28 and 30 extending from the cathode 26 support the anode 32 and a control grid 34. Webs 36 and 38 define the effective anode area and together with webs 44 and 46 protect the exposed areas of the insulators 31 and 33. The accelerator electrode 24 is a metal foil. The igniting means 48 is a wire. A radioactive source may be used. The envelope 20 may contain He at a pressure of less than 20 milli-Torr. A modified construction (Fig. 3, not shown) functions as an ion source.
Patent GB-693538-A (GB)
Title: Electrodeposition of zinc from zinc sulphate solutions using a lead base alloy anode
IPC: C25D3/22
Filed: 1951-07-31
Abstract: An anode for use in the electro-deposition of zinc (see Group XXXVI) consists of lead alloyed with from about .3 per cent to about 1.45 per cent silver and from about .1 per cent to about .4 per cent copper.  Another anode consists of lead alloyed with from about .4 per cent to about 1.45 per cent silver, from about .15 per cent to about .45 per cent copper, from about .01 per cent to about .15 per cent manganese and from about .01 per cent to about .02 per cent cobalt.
Patent GB-971489-A (GB)
Title: Improvements in or relating to sensing systems
Inventor: DARBY ROBERT HARTLEY
IPC: G21C19/32
Filed: 1961-05-18
Abstract: 971,489. Pressure alarms. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. May 3, 1962 [May 18, 1961], No. 18135/61. Heading G1L. [Also in Division G6] In a system as disclosed in Specification 932,794 in which fuel elements discharged from a reactor are sealed under vacuum within containers these containers being stored in a magazine located within the reactor containment to enable the radio-activity to decay before transfer of the elements to a cooling pond, sensing means are provided giving indications of (a) the presence or absence of the containers within the several compartments of the magazine and (b) the presence of a leak in any container. Sensing device. This comprises, Fig. 1, a pin 1 slidable in a structure 2 and engaged by the arm 5a of a three-armed lever 5 pivoted at 4. The arm 5b is counterweighted so that in the absence of a force acting on the head of the pin, the lever and pin assume the position shown. The arm 5c comprises a permanent magnet and controls the rocking of a follower armature 6 pivoted at 7. The armature arms 6b, 6c control the effective inductance of coils 9a, 9b of an induction pick-up device 8. Thus, as shown, the inductance of coil 9a is increased, whereas depression of pin 1 to the dotted line position will cause rocking of the armature 6 to increase the inductance of coil 9b. The inductances 9a, 9b form parallel resonant circuits with capacitors C1, C2, Fig. 2, resonance occurring when the inductance 9a or 9b is at a maximum. Thus, as shown, circuit 9a, C1 is resonant presenting a high impedance so that a neon lamp L1 is not ignited whereas circuit 9b, C2 is off tune and lamp L2 is ignited. Magazine. This comprises, Fig. 4, a body 10 rotatable about an axis XX and having compartments 10a for receiving sealed containers 15 for the fuel elements (not shown). For detecting the presence or absence of a container each compartment carries on its underside a sensing assembly 20 corresponding to parts 1, 5 of Fig. 1. A plurality of armatures 6 and pick-up devices 8 corresponding to the number of compartments are mounted below the magazine and arranged so that at each magazine position each assembly 20 cooperates with an assembly 6, 8. Each assembly 6, 8 controls its own pair of lamps L1, L2, these pairs being arranged on two concentric circles around a dial 12 carrying numbers corresponding to the magazine compartments and rotatable in synchronism with the magazine, Fig. 3. The letter A indicates.the position at which loading of the magazine is carried out. Hence, depending on whether a lamp L1 or L2 is ignited an indication is given as to the full or empty condition of each compartment. To indicate a leaky container 15 each container includes a bellows 18 connected to the container interior through a passage 17 and each compartment has a further pin 19 acting on a further armature 5. A further set of assemblies 6, 8 and indicating lamps is provided whereby expansion of a bellows due to a leak may give lamp indications as previously described.
Patent GB-905307-A (GB)
Title: Systems for gauging transparent tubing during drawing
IPC: G01N23/18
Filed: 1960-05-23
Abstract: 905,307. Photo-electric and like gauging devices. CORNING GLASS WORKS. May 23, 1960 [May 27, 1959], No. 18151/60. Class 40 (3). In a system of gauging the inner and outer diameters and wall thickness of transparent tubing as it is drawn, an image of the tube is scanned by means sensitive to radiant energy to give electric analogues of those dimensions. Tubing 16 is irradiated with diffused light and the image formed is passed through polarizing filter 18 to telephoto lens 20 and presented to constant-speed rotating prism 22 which scans the image in a plane perpendicular to the tubing axis and projects the scanned segments via lens 24 and apertured plate 28 to photo-multiplier tube 30, the output of which, after known pulse shaping, is displayed on a cathode-ray tube, Fig. 4, wherein peaks 440, 446 and 442, 444 correspond to the outer and inner boundaries of tube cross-section. Known coincidence circuits may be employed to generate from waveform 64 pulses of width representing the required dimensions. A Nipkow disc may be substituted for the prism and lens system. The radiation source may be the tubing when hot, the photo-multiplier tube being replaced by an infra-red detector; or it may be an X-ray or gamma-ray source, a fluorescent screen being employed. Specification 815,243 is referred to.
Patent GB-573091-A (GB)
Title: Improvements in garment hangers
IPC: A47G25/48
Filed: 1943-11-03
Abstract: 573,091. Clips. LEVIN, L. Nov. 3, 1943, No. 18207. [Class 44] [Also in Group XIV] A garment hanger comprises duplicate members each with a vertical shank 11 slotted at 19, horizontal cross bars 16 with corrugated gripping pads 18 which grip the garment when the clamping bar 21 is forced downward in the slot 19 the heads 22 engaging the ratchet teeth 24 to lock the hanger. The bar 16 is undercut at 26, 27 to retain a garment hung on the bar.
Patent GB-1047656-A (GB)
Title: Transistor modulators
Inventor: STEPHEN TOM
IPC: H03C1/54
Filed: 1964-05-01
Abstract: 1,047,656. Transistor amplitude modulating apparatus. H.M. POSTMASTER GENERAL. June 18, 1965 [May 1, 1964], No. 18245/64. Heading H3R. A modulator comprises a pair of like-conductivity-type modulator transistors VT1 and VT2, means such as transformer T1 for supplying a modulating signal S1 in antiphase to the two bases, the collectors being connected in parallel to means T3 coupling them to a load L, and an emitter circuit for coupling a carrier signal S2 to the emitters of the transistor so that they conduct alternately. In Fig. 1 biasing voltages V1 and V2 normally bias diodes D1 and D2 to conduction and the two transistors to cut-off. The carrier signal cuts off the diodes alternately, thereby allowing the corresponding transistor to conduct, so that the output signal comprises the modulating signal reversed in phase at carrier signal frequency. This signal contains modulation products but does not contain the modulating signal or the carrier, and the output is substantially independent of the input carrier amplitude and of the transistor characteristics. In a modification, Fig. 3 (not shown), the diodes D1 and D2 are replaced by the collector-emitter paths of transistors VT3 and VT4. In another modification, Fig. 5 (not shown) the carrier signal S2 is supplied to the transformer T2 (which comprises two separate transformers T2A and T2B) via a class B amplifier (transistors VTS and VT6), and the bias voltages V1 and V2 are derived from a potential divider (R3-R5). Limiter diodes D3, D4 are connected across the primary windings of T2A and T2B, and diodes D5-D8 arranged across the secondary winding of T1 and across the inputs to VT5 and VT6 protect the modulator against incoming surges.
Patent GB-643031-A (GB)
Title: Improvements in and relating to radio locating equipment
IPC: G01S7/282
Filed: 1947-07-11
Abstract: 643,031. Phase difference measurements. BRITISH THOMSON-HOUSTON CO., Ltd. July 11, 1947, No. 18522. Convention date, Oct. 28, 1943. [Class 37] [Also in Group XL (c)] Signals of the same frequency and approximately the same amplitude to be compared in phase are fed at inputs I and II respectively to the tuned primaries of transformers 26 and 27. Each transformer has two tuned secondary windings connected in pairs, opposing and aiding, through decoupling impedances 40. The arrangement of transformers 26 and 27 is such that all the windings may be earthed as shown. Thus, voltages proportional to the sum of the input voltages (E 1 +E 2 ) are fed to diodes 41 and 46 and voltages proportional to the difference (E 1 -E 2 ) to diodes 42 and 47. Diodes 41 and 42 are operated as square law detectors and connected in reverse polarity to ground through condensers 43, 44, so that these are charged with opposite polarity to voltages proportional to the square of the applied sum and difference alternating signals respectively. The sum of the condenser potentials derived at 45 is proportional to E 1 E 2  sin # (where # is the relative phase angle). Diodes 46 and 47 are also operated as square law detectors, but with the same polarity in a similar circuit so that the output at 50 is proportional to E 1 <SP>2</SP>+E 2 <SP>2</SP>. If the amplitude of the inputs (E 1  and E 2 ) is equal, then E 1  = E 2  and the ratio of the outputs at 45 and 50 is proportional to sin #. Ratio circuits for deriving sin # under such conditions are given (Figs. 4 and 5, not shown) (see Group-XL (c)). In a modification of the phase comparator circuit (Fig. 3, not shown), pentode valves are substituted for decoupling impedances 40.
Patent GB-586770-A (GB)
Title: Improvements in or relating to a method of knitting upon circular knitting machines
IPC: D04B9/00
Filed: 1944-09-28
Abstract: 586,770. Knitting. HEMPHILL CO. Sept. 28, 1944, No. 18612. Convention date, Oct. 2, 1943. [Class 74 (ii)] A more uniform fabric is obtained by drawing the yarn 25 over the backs 16 of the sinkers 15 of a circular machine and, after the previously formed needle loops 24 have been cast off, causing the newly drawn sinker loops to pass from the backs to the throats 17 of the sinkers over the tops of the nibs 18. The sinkers are moved inwardly earlier than usual by providing a flopper cam 7 having a sinker-actuating surface 9. So that the yarn is not strained unduly in passing over the tops of the sinkers, the centre sinker cam 14 has an abrupt outwardly directed portion 13 so that few sinkers are moved outwardly together.
Patent GB-573606-A (GB)
Title: Improvements in or relating to an extra seat for a child and means for attaching said seat to a bicycle or the like
IPC: B62J1/16
Filed: 1943-11-11
Abstract: 573,606. Cycle seat supports. DERRETT, J. Nov. 11, 1943, No. 18718. [Class 136 (i)] A detachable and adjustable child's seat support adapted to be secured between the handlebars and the saddle of a bicycle comprises a double U-shaped member 6, 7, the upper arm 6 passing around the front head 5 beneath the handlebars and the two parts of the other double arm 7 passing one on each side of and engaging the inclined tube 8 of the bicycle. The upper arm supports the seat 1 with backrest 13 by a clamp 4 and footrests 11 are adjustably attached to the lower arm. A clamp 10 secures the lower arm to the tube 8 and, as shown, the lower arm also passes around the head 5.
Patent GB-530651-A (GB)
Title: Improvements in or relating to traps for sink wastes and the like
IPC: E03C1/284
Filed: 1939-06-28
Abstract: 530,651. Pipe joints. YORKSHIRE COPPER WORKS, Ltd., and MAIL, J. S. June 28, 1939, No. 18763. [Class 99 (i)] The inlet tube 1 of trap for sink wastes &c. is secured within the cylindrical casing 3 of the trap by spinning a bead 9 in the tube, the bead engaging an annular groove 8 in the wall of the trap and being pressed against the edges of the groove. Another bead 10 on the tube 1 forms an abutment for a coupling nut 7.
Patent GB-531181-A (GB)
Title: Improvements in cigar-making and like machines
IPC: A24C1/02
Filed: 1939-06-28
Abstract: 531,181. Cigar-making and like machines. AKTIEBOLAGET FORMATOR. June 28, 1939, No. 18850. Convention date, June 30, 1938. [Class 130] In a machine for shaping a tobacco mass in correspondence to the cigars &c. to be manufactured, comprising a tobacco receiver 1 having a lateral inlet opening 2 closable by a pivoted flap 26, to which tobacco portions are supplied intermittently from a chute 4, a screen 8 arranged at the upper edge of the flap 26 is movable with the flap 26 to receive and convey to the receiver 1 any tobacco falling from the chute when the flap is moving into the closed position. The screen 8 may be a rubber apron passing over an idle roller 9 and connected by a spring 10 to the machine frame. Tobacco in the receiver 1 is compressed by a piston 25 and portions severed by a cutter 12 fall into the recess 5 of the rolling apron 6.