baber/WOPTO huggingface dataset:
Patent GB-377545-A (GB)
Title: Process and apparatus for the de-pulping of fibre-containing parts of agaves and similar plants
IPC: D01B1/10
Filed: 1931-11-25
Abstract: 377,545. Obtaining fibres from leaves. KRUPP GRUSONWERK AKT.-GES., F., Buckau, Magdeburg, Germany. Nov. 25, 1931, No. 32717. Convention date, Nov. 27, 1930. [Class 120 (i).] Fibre is extracted from leaves of agaves &c. by gripping them near the stalk end which is squeezed before or during the gripping at the first working position to facilitate pulping the thick stalk end at the second working position. The leaves are fed in at a between rope, chain, belt, or like conveyers 4, 5, 7, Figs. 1 and 2, the stalk being squeezed between flanges 13, 14 which may be roughened, toothed or corrugated and are on the sides of the pulleys 1, 9 remote from the beating drum 8, the rims 1<1>, 91 of the pulleys 1, 9 being of acidproof cast iron &c. After passing the drum 8 which pulps the pointed ends, the leaves are released, and again gripped at the pulped part, the remaining pulp being removed at the second position. The pulley 9 is adjustably spaced from the pulley 1 as by being on a bush 16 carried eccentrically by a stud 17 having an octagonal disc 18 resting in a recess of the bearing block 20, the stud 17 being grooved, and locked by a pin 22. Specification 271,755, [Class 120 (i), Spinning, Preparation &c. for], is referred to.
Patent GB-463206-A (GB)
Title: Improvements relating to control arrangements for belt-driven machinery
IPC: F16H7/22
Filed: 1935-11-26
Abstract: 463,206. Actuating switches and controllers. WICKMAN, Ltd., A. C., and WICKMAN, A. C. Nov. 26, 1935, No. 32727. [Classes 38 (iii) and 38 (v)] A jockey pulley e, Fig. 2, riding in contact with a belt f through which a machine, such as a lathe a, is driven, is carried on the longer arm of a bell-crank lever c, the shorter arm of which is arranged to operate a switch i when the pulley is released by the breaking of the belt. The operation of the switch i, when the belt breaks and the lever c moves under weight or spring bias g, may stop the electric driving motor b. Where the machine a is driven from a power shaft j, Fig. 6, through a belt k, the operation of a switch q when the belt breaks, energizes an electromagnet r from a generator p driven from the shaft j, to release a latch s which allows a spring or weight o to operate a fork l which shifts the belt k on to a loose pulley n. Alternatively, a clutch through which the machine a is driven may be released.
Patent GB-300243-A (GB)
Title: Improvements in two stroke cycle internal combustion engines
IPC: F01L1/44
Filed: 1928-11-09
Abstract: 300,243. Boden, G. Nov. 9, 1927, [Convention date]. Two-stroke-cycle engines.-The power piston works within a sleeve 8 controlling air-inlet and exhaust ports 5, 7, and having an integral pump piston 8<a>. The centre of the crank pin, to which is attached the main connecting-rod 13, is on the same radial line from the shaft axis as the centres of the pins which receive the rods 14 driving the sleeve; in consequence the sleeve always moves in the same direction as the power piston, but has only one-third of the movement. Air is compressed in the crank case and by the underside of the piston 8<a>; at the end of the power stroke when the ports in the sleeve register with the ports 5, 7 in the cylinder and the power piston is at the lower end of the cylinder, this air is delivered past the valve 35 to scavenge the cylinder and fill it with air. The valve 35 may close either delivery passages 6, 34 or the air inlet passage 5. On the upstroke mixture-previously drawn into the upper pump chamber past the rotary controlled valve 30-is compressed and delivered to the cylinder through the valve-controlled passage 17 alter closure of the exhaust ports. The control means for the valve 35 may be coupled with means for controlling the air suction valves 3, 3<a>. Cylinder heads and arrangement of ports and igniters in cylinders.-The head 23 is attached to the cover 1<a> by ribs 22. The valve 24 and igniter 17 are arranged eccentrically in this head, the igniter in a screwed bore formed in one of the ribs.
Patent GB-800100-A (GB)
Title: Improvements in or relating to direct coupled electronic amplifier circuits
Inventor: HIRSCH CHARLES JOACHIM
IPC: H03F3/40
Filed: 1955-11-17
Abstract: 800,100. Pulse modulation circuits; valve amplifying circuits. HAZELTINE CORPORATION. Nov. 17, 1955, No. 32949/55. Classes 40 (5) and 40 (6). In a D.C. amplifier (for an electrocardiograph), phase-modulated pulses are generated in response to the signal to be amplified, and these pulses gate a large amplitude auxiliary sine wave to produce amplitude-modulated pulses which are demodulated by a low-pass filter to provide a signal of greater amplitude than the original input. A mono-stable trigger circuit 22 is tripped to produce phase-modulated pulses whenever a diode 20 conducts due to the instantaneous value of a sampling wave B applied to the anode exceeding that of the input signal A applied to the cathode. The sampling wave B is tapped off a potential divider 14, 15 from an auxiliary sine-wave input KB. The pulses C from the trigger 22 open a gate 35 between the source KB and a low-pass filter 43, thereby producing amplitudemodulated pulses which are integrated at 43 to provide an amplified version of the original. In a modification, Fig. 3 (not shown), the two signals B and KB are obtained from independent sources.
Patent GB-209264-A (GB)
Title: Trouser press
IPC: A47G25/72
Filed: 1922-12-04
Abstract: 209,264. Tudor, M. Dec. 4, 1922. Trouser - presses. - A double trouser-press comprises a base board a having on each side and at each end blocks c formed with cam slots e and pressure boards h, h. The latter are forced towards the base board by the movement of rods g in the slots e. One set of blocks c may be extended to form feet on which the press stands vertically.
Patent GB-1186340-A (GB)
Title: Manufacture of Semiconductor Devices
Inventor: MASH DEREK HUBERT
IPC: H01L29/00
Filed: 1968-07-11
Abstract: 1,186,340. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. 11 July, 1968, No. 33042/68. Heading H1K. At some stage during the manufacture of a semi-conductor device in a single crystal of semi-conductor material, the crystal comprises an unsupported plate thinned to less than 20 Á thickness. Such a plate is flexible, and as such is less easily broken than a thicker plate. The thin Si plate 2a illustrated originally formed part of an epitaxial layer on a thicker substrate, into which a B-doped region 3 was diffused to provide a PN junction. The substrate and, if necessary, part of the epitaxial layer were polished and etched away while the assembly was mounted on a temporary support, and the remaining plate 2a was then mounted on a support 4, e.g. of Au-coated Cu or of an insulating material. During thinning the thickness of the plate may be monitored by measuring the transmission of sodium light. The plate 2a may be thinner than the original depth of the region 3. In another embodiment the final plate constitutes part of an original wafer more than 50 Á thick in which a junction has been formed by diffusion, no epitaxy being used in this case. Junctions may be formed in plates which have already been thinned to less than 20 Á. The invention may be used in the manufacture of diodes, transistors, Si or GaAs field effect transistors or varactors, light emitting GaAs or GaAsP diodes which emit light from both faces or which have reflectors on one face to reinforce light emitted through the other face, or lightsensitive devices such as solar cells open to light on both faces. Thin plates carrying devices may be mounted on top of one another to give a high packing density. Conductors may be provided on both faces of a thin plate containing a device.
Patent GB-300511-A (GB)
Title: Improvements in and relating to thermionic amplifiers
IPC: H03F3/36
Filed: 1928-11-12
Abstract: 300,511. Asch, E. Nov. 10, 1927, [Con. vention date]. Vacuum tubes.-In a cascade resistance coupled amplifier in which the anode of one stage is directly coupled to the grid of the next stage high resistances Ra1. Ra2 which are a multiple of the internal valve resistances are employed. The valves may be placed in a single envelope as shown and a single element may function as both the grid of one stage and the anode of the preceding stage. This element may in addition carry the cathode and may be flat as 'shown or curved to improve the valve characteristics. Resistances W1 .. W4 are connected in series with the cathodes to produce the desired voltage differences between the cathode and grid of each stage.
Patent GB-502205-A (GB)
Title: Improvements in domestic washing machines or boilers
IPC: D06F1/00
Filed: 1937-12-01
Abstract: 502,205. Washing-boilers. PILKLNGTON, W. Dec. 1, 1937, No. 33157. [Class 64 (i)] [Also in Group VIII] A pan or receptacle D is removably housed within the washing-receptacle A of a washing- boiler when not in use, and is suspended on the outside of the boiler casing B by hooks d or the like when in use.
Patent GB-856707-A (GB)
Title: Improvements in or relating to 2-dimethylaminoethanol salts
IPC: C07C215/08
Filed: 1959-09-30
Abstract: The invention comprises the phenolphthalin salt of 2-dimethylaminoethanol, which may contain water of crystallization or solvent of crystallization, and its preparation by reacting 2-dimethylaminoethanol with phenolphthalin either in water, in which case the product is obtained as a dihydrate, or in an organic solvent such as methanol, ethanol, acetone, ether, benzene or petroleum ether in which case the product may contain the corresponding solvent of crystallization.  The salt is used pharmaceutically.
Patent GB-761382-A (GB)
Title: Manufacture of acid wool dyestuffs of the anthraquinone series
IPC: C09B1/26
Filed: 1953-11-30
Abstract: The invention comprises dyes of the formula:-<FORM:0761382/IV(b)/1> where X is hydrogen or sulpho, and R is a completely or partially hydrogenated radical of the benzene or naphthalene series.  They are made by condensing a partially or completely hydrogenated aromatic primary amines of the benzene or naphthalene series with (1) the corresponding 1-bromanthraquinone-3-sulphonic acids, or (2) with the corresponding 1.3-dibromanthraquinones, followed by exchange of the 3-bromine atom for sulpho with an agent such as sodium sulphite, or (3) the corresponding 1-amino-4-bromanthraquinone-2-sulphonic acid, followed by removal of the amino group (by diazotization and boiling with alcohol). In examples, (1) 1-bromanthraquinone-3-sulphonic acid or its sodium salt is condensed with 2-amino-1.2.3.4-tetrahydronaphthalene, o-, m-, or p-amino-hexahydrotoluene, or cyclohexylamine; (2) 1-bromanthraquinone-3.6- or 3.7-disulphonic acid is condensed with cyclohexylamine or with o-, m, or p-amino-hexahydrotoluene; (3) the condensation product from 1-amino-4-bromanthraquinone-2-sulphonic acid and cyclohexylamine, or p-amino-hexahydrotoluene is diazotized and the product boiled with alcohol; (4) the condensation product from 1 - amino - 4 - bromanthraquinone-2.6-disulphonic acid and cyclohexylamine, o-, m- or p-amino-hexahydrotoluene, or 2-amino-1.2.3.4-tetrahydronaphthalene is treated as under (3); (5) 1.3-dibromanthraquinone is condensed with cyclohexylamine, followed by reaction with sodium sulphite solution. Specification 434,429 is referred to.
Patent GB-842726-A (GB)
Title: Improvements in or relating to the production of aluminium
IPC: C22B21/00
Filed: 1956-10-31
Abstract: 842,726. Extracting aluminium. PECHINEY COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES. Oct. 31, 1956 [Nov. 4, 1955], No. 33267/56. Class 82(1) Aluminium is produced by decomposition of aluminium nitride at a pressure equal to or less than 40 mm. of mercury in the range 1500‹C.- 2000‹C., while substantially preventing any contact between carbon in the apparatus and the nitride and its decomposition gases, the carbon-containing by products of the reaction being formed and retained in a zone siutated before that in which aluminium is condensed to the liquid state. Preferably the carbon (c%) and aluminium oxide (a%) contents of the starting material are restricted by the formula a + 7.5c # 6.8. In the apparatus shown in Fig. 2 aluminium nitride in crucible 4 is heated to the decomposition temperature by induction coil 15, the trap 14 is heated to within the range 1400‹C.- 1500‹C. by coil 16 to retain carbide-containing by-products, the top of condenser 10 is maintained at a temperature in the range 1200‹C.-1300‹C. to condense aluminium in liquid form which is collected at 13, and the walls 11 of the vapour duct are maintained at a temperature in the range 1000‹C.-1200‹C.to condense oxide-containing impurities in the vapours. At least those parts of the apparatus which operate at a temperature above 1500‹C. have their surfaces made of or covered with a nitride or carbide of tungsten, molybdenum, tantalum, titanium or zirconium or a mixture of these compounds. The coating may be formed by painting on the surfaces a mixture of metal powder in an organic medium and firing under vacuum at a temperature over 1000‹C., e.g. 1500- 1800‹C., to convert the metal to carbide.
Patent GB-943420-A (GB)
Title: A device for monitoring the function of the heart
IPC: A61B5/0255
Filed: 1960-09-28
Abstract: 943,420. Cardiac measurements. E. JAEGER. Sept. 28, 1960 [Oct. 3, 1959], No. 33298/60. Heading A5K. A device for monitoring the function of the heart comprises a pulse-beat detecting head and a circuit which releases an alarm when the pulse frequency deviates from an adjustable range and which causes a timing mechanism to operate when the heart stops. Two transducers 1, 2, so placed as to receive pulses at separated points on the body to indicate the pulse wave velocity, are amplified at 30, 30<SP>1</SP> and used to trigger a bi-stable circuit 31 resulting in a square pulse 34, the width of which indicates the time between the two received pulses. This passes to an integrating circuit 35 which gives an output 36 of voltage magnitude depending on the width of the pulse 34. A voltage in excess of a predetermined level triggers a valve 37 and operates a relay 38, the contact 38a of which actuates an alarm. In addition, a measuring instrument 3111, powered by a valve 31<SP>1</SP>, may be connected to the output of the circuit 31 to give a visual indication of the timing. The pulse beat frequency is indicated by a timing device 9, actuated by a condenser 44, which is alternately charged and connected to amplifier 48 by contacts of a relay 43, energized through an amplifier 42, the grid of which is connected to the output of amplifier 30. A gas-filled valve 59 is so connected into the same circuit that it is extinguished when no pulses are received, owing to the build-up of voltage on condenser 44. When this occurs, a valve 60 conducts, owing to the fall in its cathode potential, and a relay 62 is operated. Contact 62a then completes a circuit to energize a magnet 63 which starts a clock. If the patient's heart recommences functioning after a short time, so that the relay 62 is released, its contact 62b then completes a circuit through magnet 64 to stop the clock.
Patent GB-502715-A (GB)
Title: Improvements relating to the preserving of grass
IPC: A23K3/03
Filed: 1937-12-02
Abstract: 502,715. Preserving grass. GOODALL, C. Dec. 2, 1937, No. 33324. Addition to 482,312. [Class 5 (i)] Cut grass is heated in a bath of liquid, or in the presence of its own moisture, to a temperature of about 180-212‹ F., and immediately afterwards stored in the wet condition in an air-tight container, such as a silo covered with clay. When required for use, the grass is removed from the container and dried, or its surplus moisture may be removed by squeezing between rollers.
Patent GB-1094764-A (GB)
Title: Method for separation of divinylbenzene isomers from hydrocarbon mixture
Inventor: GENDRIKOV EDUARD PAVLOVICH
IPC: C07C7/156
Filed: 1966-07-25
Abstract: Divinyl benzene isomers are separated, either singly or together, from a hydrocarbon mixture by treating the mixture with a cuprous salt, preferably cuprous chloride, mixed with a solution of ammonium chloride.  By treatment at 5-30 DEG  C. (preferably 15-20 DEG  C.) the 1,4-divinylbenzene/cuprous chloride complex is obtained selectively and can be separated, the residue then being treated similarly at -10 DEG  to +5 DEG  C. (preferably -5 DEG  to +3 DEG C.) to obtain the 1,3-divinylbenzene/cuprous chloride complexes. By treatment in which the temperature is gradually lowered in the range 20 DEG  to -15 DEG  C. both complexes are formed, and after recovery of the divinylbenzenes, the two isomers may be separated if desired by further selective treatment as above. Decomposition of the complexes may be achieved by steam-distillation, a twophase hydrocarbon/water mixture being recovered.
Patent GB-748584-A (GB)
Title: Improvements in or relating to polymerization process
IPC: C08F10/00
Filed: 1953-12-01
Abstract: Ethylene and/or propylene, with or without other monomers, is/are polymerized by the process described in Specification 748,583, except that a borohydride of a metal having an electronegativity of at least one on the Pauling scale and which reacts vigorously with water at 25 DEG  C. to produce hydrogen, is used instead of an alkali metal hydride.  Specified metals are lithium, magnesium, beryllium, aluminium, thorium, hafnium, zirconium and uranium.ALSO:Ethylene and/or propylene, with or without other monomers, is/are catalytically polymerized (see Group IV(a)) by the process of Specification 748,583, except that a borohydride of a metal having an electronegativity of at least one on the Pauling scale and which reacts vigorously with water at 25 DEG C. to produce hydrogen, is used instead of an alkali metal hydride.  Specified metals are lithium, magnesium, beryllium, aluminium, thorium, hafnium, zirconium and uranium.
Patent GB-660089-A (GB)
Title: Improvements in and relating to electric induction devices particularly transformers
IPC: H01F27/245
Filed: 1949-12-30
Abstract: 660,089. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 30, 1949 [Jan. 15, 1949], No. 33371/49. Class 38 (ii). A transformer comprising a core of E and I laminations 3, 4 is provided with high leakage reactance by disposing the secondary winding 7 concentric to the primary winding 6 on the central limb 5 with at least one magnetic shunt member 8 formed of a plurality of laminations, separating the primary and secondary windings, this shunt member 8 lying in a plane different from that established by the main core legs, and outside the core windows. As shown, the shunt member comprise L- shaped laminations having the foot of alternate L's mounted at either end of the core and arranged parallel to and lying in a plane perpendicular to the plane of the main core laminations, preferably on opposite sides of the centre leg. Alternatively, I or U-shaped laminations may be used. The gap between the end of the shunt member and the main core may be maintained by insulating material 13 and kraft board 12 may be wedged between the shunt member and coils. The transformer may be used in conjunction with a discharge device to provide the ballast.
Patent GB-1157275-A (GB)
Title: A Method for the Production of 5'-Ribonucleotide
IPC: C07H1/02
Filed: 1966-07-25
Abstract: 1,157,275. 5<SP>1</SP>-Ribonucleotides. TAKEDA CHEMICAL INDUSTRIES Ltd. 25 July, 1966 [27 July, 1965], No. 33391/60. Heading C2C. A method of preparing a 5<SP>1</SP>-ribonucleotide from the corresponding ribonucleoside comprises reacting the latter with a phosphorylating agent in the presence of a nitrile compound containing from 2 to 8 carbon atoms and hydrolysing the product. Suitable nitriles are aliphatic mononitriles, aliphatic dinitriles and aromatic nitriles, which are preferably employed in an amount ranging from 10 to 300 moles per mole of ribonucleoside. About 1 to 30 moles of phosphorylating agent per mole of ribonucleoside are used, and the reaction may be effected at room temperature or with heating or cooling. Preferred phosphorylating agents are pyrophosphoryl tetrachloride, phosphorus oxychloride and partially hydrolysed or alcoholysed phosphorus oxychloride, and examples are given of the preparation of inosine-, uridine-, adenosine-, cytidine-, and guanosine-5<SP>1</SP>-monophosphates. Others specified are hypoxanthine, thymine and those containing a pyridine base, e.g. nicotinamide ribonucleoside, and other specified phosphorylating agents are PCl 3 , PCl 5  and partially hydrolysed or alcoholysed PCl 3  or PCl 5 .
Patent GB-511908-A (GB)
Title: Improvements in or relating to apparatus for manufacturing tin plates and the like
IPC: B21B15/00
Filed: 1938-11-17
Abstract: 511,908. Coating with metals. EVANS, E. Nov. 17, 1938, No. 33421. [Class 82 (ii)] Plates to be coated with tin, terne &c. are first passed through hot water in a washing tank A and then through the coating tank G which is divided into two or more coating pots containing guide rolls. The washing tank A' which contains one or more pairs of guide rolls B and is heated by a grate or furnace C, may be mounted on wheels or castors or may be connected to or formed integrally with the coating tank. A guide plate may be provided to direct the plates to the first pair of rolls B. The coating tank shown is divided into 4 pots Z, Y, X, U each containing guide rolls, the rolls L in the pot Y being adjustable by means of a wheel M. The plates pass from the pot Z to the pot Y and from the pot Y to the pot X through apertures J in partitions K. The tank is heated by combustion gases from the grate D passing through flues F, F<1>, F<2>, and air passages E are provided at the bottom of the tank to cool the pots. The plates are discharged from the pot U by rolls N mounted in a frame P, the frame also carrying plates R which dip into the molten metal and keep scruff &c. from the coated plates and the rolls N. An apparatus in which the coating tank comprises two compartments only is also described.
Patent GB-735016-A (GB)
Title: Improvements in devices for dispensing single sheets of paper and the like
IPC: B43M99/00
Filed: 1953-12-02
Abstract: 735,016. Feeding sheets. PEARCE, H. R. Dec. 2, 1953, No. 33493/53. Class 100 (1). Sheet-separators.-Sheets of paper are dispensed from a pile 7 in a closed container 1 by inserting a pencil or the like 16 into the container to actuate the sheet-separating mechanism. The top of the container comprises a hinged cover 3, and a fixed part 2 having a tubular element 15 to receive a pencil &c. A friction separator 9 of rubber is carried by an arm 8 pivoted at 10 to a bracket 11 secured to a spindle 12 which is pivoted in the side walls of the container. The arm 8 is urged to the position shown by a spring 13 on the pivot 10. The pencil 16 depresses a plate 14 secured to the spindle 12, and the separator means is retracted to the dotted line position. On release, the spring 13 restores the separator to the normal position, and the top sheet is pushed through a gap 6, the front edge of the sheet sliding up an inclined surface 17.
Patent GB-842822-A (GB)
Title: Improvements in or relating to electric discharge tubes having an indirectly-heated cathode
IPC: H01J1/24
Filed: 1958-10-21
Abstract: 842,822. Thermionic-cathode tubes. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 21, 1958 [Oct. 23, 1957], No. 33603/58. Class 39(1). In an indirectly-heated cathode, the insulated wire forming the heater is surrounded and centred by a supporting body of bare metal, the said support being secured independently of the cathode sleeve. Fig. 1 shows a diode having anode 13 and cathode 4. The heater 6 has wound round it a supporting helix 7 of bare molybdenum or tungsten wire, which is secured to supports 8 and 9. One end of the heater is also connected to support 9. The helical support 7 may be wound round a pair of backbone rods, after the manner of a grid, the rods then being secured to the supports 8, 9, Fig. 2 (not shown).