baber/WOPTO huggingface dataset:
Patent GB-440943-A (GB)
Title: Improvements in or relating to filtering masses for gas masks for affording protection against hydrocyanic acid
IPC: A62D7/00
Filed: 1935-09-02
Abstract: A gas-mask filter for protection against hydrocyanic acid comprises an inorganic basic salt and an oxide of a heavy metal, e.g. iron, chromium, nickel or manganese.  Diluents such as talc, textile fibres, silica gel, and active carbon may be incorporated. A suitable filter has the composition by weight: basic copper carbonate 60, manganese dioxide 90, and diluent 75 parts.  The components may be ground together, preferably while wet, dried at a temperature, e.g. 100-120 DEG  C., such that no decomposition occurs, and moulded. Alternatively, the metal oxide and basic salt may be precipitated and mixed in one operation.  Manganese dioxide may be precipitated from a solution of a manganese salt, the precipitate washed, and suspended in a liquid containing a metallic salt from which a basic salt is precipitated.  A mixture of one or more oxides and one or more basic salts of the same metal may be used.  The porosity of the product is determined by the liquid medium employed and the moulding pressure. The filter may be employed in alternate layers with other filtering materials.
Patent GB-511463-A (GB)
Title: Improvements in power-operated presses for making perforated articles
IPC: B30B15/32
Filed: 1938-08-23
Abstract: 511,463. Moulding perforated bricks &c. GENERAL REFRACTORIES CO. Aug. 23, 1938, No. 24835. Convention date, March 10. [Class 87 (ii)] . Bricks of refractory material are perforated by being moved by a feeder 49 into a stationary mould box 30 in which work upper and lower toggle-operated plungers 23, 28 and camoperated piercers 43 adapted to pass through apertures in the plungers. The upper plunger is provided with valve-controlled openings for the escape of the material removed by the piercers. The connecting-rod 16 for operating the toggles is provided with a cam surface 116 resting on a roller 117, whereby the plungers are raised for the ejection of a mould article by an oncoming shape S.
Patent GB-797205-A (GB)
Title: Method of producing small semi-conductor single crystals
IPC: C30B11/00
Filed: 1954-08-26
Abstract: Single crystals suitable for semi-conductor diodes or transistors are produced by heating semi-conductor material in a shallow mould, cooling so as to form a single crystal slab thin enough for transistor or diode use, and then dividing the slab into individual crystals.  Fig. 1 <PICT:0797205/III/1> <PICT:0797205/III/2> shows a quartz tube 12 containing a stack of moulds, such as shown in Fig. 2 having shallow cavities 10 and projections 11 which exert pressure on molten material in the cavities of the underlying mould.  The moulds may be made of graphite or quartz with a carbon black coating. Powdered unpurified semi-conductor material such as Ge, Si or Ge-Si alloy is placed in the cavities, the moulds stacked and the entire assembly heated in a non-reactive circulating atmosphere such as H, N, He or A, so that the mould sections move down to compress the material.  This is followed by a zone refining process and subsequent doping with antimony, which is effected by induction heating coil 17 associated with rotary screw 19.  After heating, the assembly is slowly cooled to form a single crystal consisting of a 0.025 inch thick slab in each cavity.  Each slab is then scored across one of its major faces so that individual single crystals may be provided, each of suitable size for transistor or diode use.  If desired the slabs may be scored in two directions, where the width of the slab exceeds the desired width of a single transistor crystal.
Patent GB-1437835-A (GB)
Title: Device and method for substained iodine release
IPC: A61K9/58
Filed: 1974-06-05
Abstract: 1437835 Sustained iodine release COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION 5 June 1974 [14 June 1973 24878/74 Heading A5B A device for providing controlled and sustained release of iodine to animals, particularly ruminants, comprises a sealed envelope of plasticised or unplasticised polyvinylchloride, a nylon, a polyethylene or a polypropylene, permeable to iodine, and which contains elemental iodine or a source of iodine. The administration may be oral or by surgical implantation. The device of Fig. 4C consists of a rubber disc 1 which has a central aperture 2, in which is a polyethylene capsule 3 containing the iodine or source of iodine. Capsule 3 is shown in detail in Figs. 4B and 4A. Body 4 has a socket 6 which extends into a cavity 7, and a slot 8, into which plug 5 is fitted. The iodine or source of iodine is placed in 7 and the capsule is held in place in the disc 1 by engaging the slots 8 and 10 therein. The devices may be in the form of, or incorporated into, tihe devices of U.K. Specification 1318259.
Patent GB-1032664-A (GB)
Title: Improvements in or relating to belt conveyors
Inventor: NEWTON HORACE JOSEPH
IPC: B65G39/12
Filed: 1963-06-22
Abstract: 1,032,664. Troughing idler roller assemblies for endless belt conveyers. UNIVERSAL CONVEYER CO. Ltd. Sept. 18, 1964 [June 22, 1963], No. 24925/63. Heading B8A. The outer rollers 5 of a troughing idler roller assembly for an endless belt conveyer are rotatably mounted on spindles 6 which are adjustably supported, whereby the inclinations of the outer rollers may be varied. Each spindle 6 passes through a U-bolt 8 extending through apertures in a fixed plate 7 and is located at its inner end by a bolt passing through one of a series of apertures 9 in the plate 7 and through an aperture at the inner end of the spindle. The apertures 9 are arranged at regular angular intervals on radii taken from the centre of the U-bolt 8 and at varying distances from the centre of the U-bolt, the arrangement being such that, in the various angular positions of the spindles, the belt-supporting width of the idlers 5 is maintained substantially constant. The invention may also be applied to the outer rollers of idler roller assemblies comprising four, five or more idler rollers.
Patent GB-871244-A (GB)
Title: Portable machines for trimming rail joints
Inventor: BLAKE ALBERT JAMES WILMOT
IPC: B23Q9/00
Filed: 1957-08-07
Abstract: 871,244. Welded railway rail joints. FLEXTOL ENGINEERING CO. Ltd. Oct. 22, 1957 [Aug. 7, 1957], No. 24941/57. Drawings to Specification. Class 104 (2). [Also in Group XXII] In welding rails to form a continuous railway track, a closure-plate is placed beneath the gap between two rails while the gap is filled with weld metal. The plate is then removed by a milling cutter (see Group XXII). It is stated that the plate is normally left in place.
Patent GB-1523038-A (GB)
Title: Decapeptide
IPC: C07K1/113
Filed: 1976-06-16
Abstract: 1523038 Decapeptide SOC FARMACEUTICI KALIANA SpA 13 June 1977 [16 June 1976] 24961/76 Heading C3H [Also in Division C2] H - Pyroglu - Gln - Asp - Tyr - Thr - Gly- Trp - Nle - Asp - Phe - NH2 wherein the hydroxyl of Tyr is optionally protected by sulphate radical; and/or the hydroxyl of Thr is optionally protected by an acetyl radical; and the non-toxic, pharmaceutically-acceptable salts thereof with an inorganic base or organic base. Decapeptides of the invention prepared are: H - Pyroglu - Gln - Asp - Tyr(R1) - Thr(R2). Gly - Trp - Nle - Asp - Phe - NH2 wherein R1 is H and R2 is Ac, R1 is SO3H and R<2> is Ac, R1 is SO3H and R2 is H. Peptide intermediates isolated are: PENTAPEPTIDES: Z - Pyroglu - Gln- Asp(OBzl) - Tyr - Thr(Ac) - NHNHZ ; H - Pyroglu - Gln - Asp Tyr - Thr(Ac) - NHNH2; Boc and H-Gly-Trp-Nle-Asp-Phe-NH2. TETRAPEPTIDES: Boc and H - Gln- Asp(OBzl) - Tyr - Thr(Ac) - NHNHZ; Z - Trp- Nle - Asp(OBzl) - Phe - NH2; H - Trp - Nle- Asp-Phe-NH2. TRIPEPTIDES: Boc and H Asp(OBzl)- Tyr - Thr(Ac) - NHNHZ; Boc and H - Nle- Asp(OBzl)-Phe-NH2. DIPEPTIDES: Boc and H - Tyr - Thr(Ac) - NHNHZ; Boc and H-Asp(OBzl)-Phe-NH2.
Patent GB-833755-A (GB)
Title: Improvements in or relating to non-return valves
Inventor: CAMERON HUGH
IPC: F16K15/16
Filed: 1956-08-15
Abstract: 833,755. Non-return valves. GENERAL ELECTRIC CO. Ltd. Aug. 12, 1957 [Aug. 15, 1956], No. 25008/56. Class 135. A non-return valve, e.g. the inlet valve of a refrigerant compressor, comprises a double reed of which one reed is perforated and adapted to be opened above a minimum fluid pressure to an extent dependent on the pressure, and a second reed covering the perforation in the first reed and adapted to be opened fully to a stop position by the minimum pressure. As shown, in a refrigerant -compressor of which the cylinder 1 carries a head 3 having an inlet port 8, the valve comprises a first reed plate 4 having an integral reed 9 covering the port, a hole 11 in this reed being covered by a second reed 10 secured to the first reed plate at 15, 16. The deflection of the second reed is limited by a recessed land 18 of the cylinder. The contacting surfaces of the reeds may be covered with a damping film of oil, whilst further to assist noise reduction, a lead-covered copper gasket 5 is interposed between the cylinder and the head.
Patent GB-692809-A (GB)
Title: Improvements in profiling machines
IPC: B24B19/12
Filed: 1950-10-13
Abstract: 692,809. Electric follow-up systems. RESEARCH ENGINEERS, Ltd., and GLADSTONE, W. S. Oct. 12, 1951 [Oct. 13, 1950]. No. 25068/50. Class 40 (i). [Also in Groups XXII, XXIII and XL(b)] In a copy grinding or milling machine in which engagement of the cutting tool with the work' piece is effected by a servomotor under the control of a.photo electric cell illumination of which is controlled by linear movement of a follower on the pattern, hunting of the servomotor is prevented by feed back from a direct current generator driven by the servomotor. As shown (Fig. 1) the pattern 4 and work piece 3 are mounted on tables 6, 5, which are slowly'rotated by an electric motor 9. These two tables are carried on a further table 2 which may be moved along a bed 1 by a lead screw 13. The edge of the pattern is engaged by a follower 17, capable of a small amount of longitudinal movement. The follower carries an arm 20 which rocks a mirror or prism 21 against the action of a spring 23 thus varying the relative amount of light falling on two apertures 28 behind each of which is situated a photo cell 29. The relative' output of the cells determines the direction of rotation of a servomotor 14 which drives the table 2 until the illumination of the cells is again equal at the same time positioning the workpiece relatively to a cutter 12. The stabilising feed back voltage is derived from D.C. generator 31 geared to the servomotor. The follower Fig. 2 comprises an arm 16 carrying a roller 17 engaging the edge of the pattern the other end of the arm being mounted in a holder which is carried in blade springs 18. These springs permit a slight amount of to and fro movement of the follower but if this is exceeded the part 16 compresses a spring 19 to prevent damage to the blade springs. The circuit. Photo-cells 29 feed cathode follower valves 35 which in turn feed power valves 36 connected in a push-pull circuit, the servo field winding 37 being centre tapped and connected between their anodes. Thus the relative illumination of the cells determines the direction of rotation of the D.C. fed servomotor armature 14. The D.C. voltage derived from generator 31 geared to the servo is applied to the grid of power valve 36 across a resistor 34. The output of this generator is shunted by a pair of oppositely connected rectifiers 32, 34 (which may be biased diodes) which short circuit the output when it exceeds a certain value thus the servo is not slowed when the error signal is large.
Patent GB-354073-A (GB)
Title: Improvements in and relating to spinning mules and twiners
IPC: D01H3/12
Filed: 1930-08-22
Abstract: 354,073. Mules. LEES & CO., Ltd., A. and GUY, W., Soho Iron Works, Oldham, Lancashire. Aug. 22, 1930, No. 25106. [Class 120 (ii).] In a spinning mule a lost-motion mechanism is provided whereby at the beginning of the spinning operation the cop builder mechanism is held wholly or partly out of operation until a bunch of yarn has been wound at the base of the cop either without any progression, i.e. in superposed layers, or with a small progression, i.e. with the windings distributed over a limited range, after which the lostmotion mechanism is automatically put out of action and the cop builder motion brought into operation. In the second alternative the movement of the lost-motion mechanism is communicated to the builder screw to provide the progression of limited range for the bunch. The builder screw 5, Figs. 1 and 2, is provided as usual with the toothed builder wheel 6 operated by a pawl 8 on the lever 7. A wheel 10 having a toothed portion 12 of greater diameter than the wheel 6 and a plain portion 13 of less diameter than the wheel 6 is mounted freely on the spindle end of the screw 5 and is pressed against the wheel 6 by a spring 11. The pawl 8 is sufficiently wide to engage the teeth of both wheels 6, 10. When full cops have been doffed the pawl 8 is thrown back and the screw 5 reversed in the ordinary way. Owing to the pressure of the spring 11 the wheel 10 rotates with the screw 5 until a stop 14, adjustable in holes 15, engages a fixed stop. On its return to the operative position the pawl 8 then engages the teeth 12 and oscillation of the arm 7 causes the pawl 8 to rotate the wheel 10 idly on the spindle of the screw 5 while holding the pawl 8 away from the wheel 6, the yarn being wound as a bunch on the base of the spindle. When the pawl has passed the last tooth 12 it falls on to the wheel 6 and the ordinary build commences. In a modification, Figs. 3 and 4, a build of small range may be given to the bunch, a ratchet wheel 21 combined with a toothed wheel 16 being mounted freely on the builder-screw spindle and a toothed wheel 17, of greater diameter than the wheel 16, being fixed thereon. A compound carrier wheel 19 is mounted in gear with the wheels 16, 17. A pawl 18 on the arm 7 engages the ratchet wheel 21. As the arm 7 is rocked the pawl 8 rotates the wheel 10 idly and the pawl 18 turns the wheel 21 to drive the builder screw 5 slowly to build the bunch through the train 16, 19, 17. When the pawl 8 falls on to the wheel 6 the wheel 17 drives the wheel 16 at a faster speed the ratchet wheel 21 then overrunning the pawl 18. A reversing handle 9 and a brake-spring 20 stronger than the spring 11 are provided.
Patent GB-427525-A (GB)
Title: Improvements in or relating to signal transmission systems
IPC: H03G3/20
Filed: 1934-08-31
Abstract: 427,525. Transmission systems. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Aug. 31, 1934, No. 25178. Convention date, Aug. 31, 1933. [Class 40 (iv)] [See also Group XL] The amplification of a signal transmission system is varied in response to signal level variations and also in dependence upon the rate of change of said variations. The principle may be used to prevent rise of amplification during an interval between signals over a channel in which no carrier is transmitted during such an interval or over a low frequency channel. In the embodiment described, a carrier frequency amplifier HV feeds a controlled amplifier RV which may also comprise a detector. Some of the output of the amplifier RV is fed to an amplifier-detector VG providing gain control potentials to the amplifier RV over a path including low-pass filters T1, T2, T3, a potential divider comprising resistances W1, W2 being connected between the two latter filters. A polarized relay R is connected between the input and output sides of the filter T2, its contact r being arranged either to connect the filter T3 across both resistances W1, W2 or across the resistance W2 only. During signal transmission the latter connection is made, but when the signal level suddenly falls the momentary difference in potential across the filter T2 operates the relay to increase the input to the filter T3 and hence to increase the control voltage on the device RV and effect the desired noise-suppression. A sudden rise in signal level restores the relay to its other position. In a modification, Fig. 2 (not shown), the filter T2 is replaced by two shunt circuits of different time constant each comprising a resistance and condenser, the relay being connected therebetween. Alternatively the relay may be connected to the secondary of a transformer, the primary of which is fed with the control voltage, and the relay may be replaced by known valve arrangements having two positions of stability between which it may be triggered by applied voltages.
Patent GB-917732-A (GB)
Title: Improvements in spectacles and eyewear and the like
Inventor: NEWMAN FRANCIS EDWARD
IPC: G02C11/02
Filed: 1959-07-23
Abstract: 917,732. Spectacles. BLANDCROFT Ltd. July 21, 1960 [July 23, 1959], No. 25236/59. Class 97 (1). A pair of spectacles has a trim and at least one of the two is resiliently deformable so that the trim may engage the spectacles above or below the nosepiece and at a point or points spaced from the nosepiece. As described, the trim 12 is attached at the nose-piece 20 by one or more hooks 14; the trim may be in two parts, one for each eyepiece. The trim is attached at a distance from the nose-piece either by a hook (e.g. hook 32 in Fig. 7) or by a pin projecting in any suitable direction and engaging a hole or slot in the frame (cf. pin 34 and hole 35 in Fig. 8).
Patent GB-1416885-A (GB)
Title: Method of preparing unsaturated polyester-based synthetic thermosetting resinous materials for testing
IPC: C08J5/00
Filed: 1972-05-30
Abstract: 1416885 Testing sheet moulding compound BRITISH INDUSTRIAL PLASTICS Ltd 23 May 1973 [30 May 1972] 25259/72 Heading B5A Sheet moulding compound comprising a layer of unmatured unsaturated polyester resin-based material sandwiched between sheets of protective film is cooled sufficiently below ambient to render the resin material thereof non-tacky, stripping the sheets therefrom and moulding a test specimen from the cooled sample. Cooling is preferably effected to -5 to -20 C. by solid carbon dioxide, liquid nitrogen or by placing in an ice-box. The stripped sample may be brought to ambient temperature before moulding in a heated tool.
Patent GB-535773-A (GB)
Title: Improvements relating to the recovery of organic liquids which are soluble or partially soluble in water
IPC: C07C51/42
Filed: 1939-09-07
Abstract: 535,773. Recovering organic liquids from aqueous solutions ; filters. SUTCLIFFE, E. R., and EDWARDS, W. E. Sept. 7, 1939, No. 25353. [Class 2 (iii)] [Also in Group I] In recovering organic liquids of low boiling point, -such as hydrocarbons and esters, from aqueous solutions, the solution is passed downwardly through active carbon or other absorptive filtering-medium and the organic substance afterwards driven off from the filtering medium as a vapour by steam passed upwardly into contact with the medium, the steam condensed in heating the medium being drained away. The method is stated to be applicable in the recovery of benzene, ethyl acetate, butyl acetate and amyl acetate. Suitable apparatus may comprise a filter a with at the top an inlet b for aqueous solution and an outlet connection c to a condenser d for the vapour and, at the bottom, an outlet connection e<SP>1</SP> for treated liquid, an inlet connection e<SP>2</SP> for steam and a connection to a trap f for condensed steam. Apparatus is described comprising two filters with connections so that liquid can be passed through one while steam is passed through the other.
Patent GB-447312-A (GB)
Title: Regulation of thermionic television amplifiers
IPC: H03F3/02
Filed: 1935-09-13
Abstract: 447,312. Valve amplifying circuits. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. Sept. 13, 1935, No. 25451. Convention date, Sept. 21, 1934. [Class 40 (v)] The amplification ratio in image frequency amplifiers for television is varied without causing distortion of the resulting tone-gradations by employing a three-grid valve such as a pentode 10, the amplification being varied by controlling the suppressor grid bias by potentiometer 12 and battery 6. By this means the operating point of the amplifier is substantially unchanged. The high frequency interference due to movement of the potentiometer contact is eliminated by the filter 11, 12, the suppressor grid being maintained at zero potential for alternating currents by condenser 11. The screen grid 14 is positively biassed in normal manner.
Patent GB-1164937-A (GB)
Title: Improvements relating to Pump Unloading Valves.
Inventor: HIGGINS GEORGE HENRY
IPC: F16K11/04
Filed: 1967-06-02
Abstract: 1,164,937. Valves. GODIVA FIRE PUMPS Ltd. 26 March, 1968 [2 June, 1967], No. 25518/67. Heading F2V. A by-pass relief valve assembly for the pump of a fire fighting vehicle comprises a relief valve member 18 which opens to by-pass liquid from a port 4, connected to the pump, to an outlet 5 connected to a return line 6 when pressure in the port 4 rises, e.g. due to the pump is delivering into a closed line. A drain valve member 21 is biased to an open position to drain line 6 when pressure at port 4 falls. Member 21 is closed by the pressure at port 4 acting on diaphragm assembly 16.
Patent GB-815729-A (GB)
Title: Improvements relating to apparatus for forming artificial targets
Inventor: POWLEY MALLINSON
IPC: F41G3/22
Filed: 1954-09-03
Abstract: 815,729. Sights for ordnance. FERRANTI Ltd. Dec. 2, 1955 [Sept. 3, 1954], No. 25582/54. Drawings to Specification. Class 92 In a device for forming an artificial target where the actual target is obscured, for gun-aiming purposes, an image of a graticule is formed in a device similar to that described in Specification 578,958, but in the present Specification the image is positioned, by signals from a radar scanner, so as to be maintained aligned with the actual target. In an embodiment, the image is positioned by electrical signals corresponding to the azimuthal and elevational positions of the scanner which are applied to the precessional system of the gyroscope which stabilizes a mirror in the image forming optical system. In a second embodiment the optical system and the scanner are corrected by a mechanical linkage.
Patent GB-690507-A (GB)
Title: Improvements in or relating to electric lighting arrangements comprising electric lamps
IPC: H05B41/39
Filed: 1950-10-20
Abstract: 690,507. Control systems for electric lamps. GENERAL ELECTRIC CO., Ltd., and WILLIAMS, C. E. Sept. 3, 1951 [Oct. 20, 1950], No. 25651/50. Class 38 (iv). [Also in Group XXXVII] An arrangement for varying in discrete steps the brightness of a plurality of groups of electric lamps comprises a dimmer for each group, all such dimmers being linked together for operation in the same sense as each other so that during travel the individual dimmers operate one after the other at regular intervals and in such sequence that between the end of one and the start of the next but one step in brightness of any one group, there is at least one brightness step in each of the other groups. As shown in Fig. 1, each of four groups 1 ... 4, each of one or more series-connected discharge lamps, is supplied from the series-connected secondary windings 5, 6 ... 11, 12 of pairs of transformers whose primary windings 25, 26 ... 31, 32 are parallel connected to a supply, through respective dimmer resistors 33 ... 36. The taps of these four resistors are connected to respective dimmer switch studs 41 ... 44, Fig. 2, arranged in a circular manner and each group is staggered relative to the next so that on rotation of a cormnon wiper arm 50 comprising four respective blades engaging the studs 41 ... 44 there obtains one brightness step in each other group between two steps of any one group. This provides for a gradual change of light in the system as a whole, with fewer switch studs than if each lamp group had a number of studs equal to the number of light steps. The graph shows the total illumination I provided by sequential light increase in three lamp groups A, B, C.