baber/WOPTO huggingface dataset:
Patent GB-209455-A (GB)
Title: Improvements relating to electric signalling systems employing periodic currents
IPC: H04B1/18
Filed: 1922-07-10
Abstract: 209,455. Hinton, N. P. July 10, 1922. Atmospherics and undesired signals, eliminating or limiting; heterodyne receiving systems; thermionic amplifiers and detectors; tone or group frequency tuning arrangements; directive signalling.-Relates to the use of a negative resistance device in combination with a rejector circuit for reducing the resistances of the latter, and consists in the employment in the rejector circuit of an inductance of ordinary dimensions and in arranging the rejector circuit as a shunt for undesired oscillations. These arrangements may be combined with the directional aerials described below. A rejector circuit L", C<3> tuned to the frequency of the desired waves may be shunted across the receiving circuit L<2>. C<2> so as to short-circuit undesired waves. Several rejector circuits in parallel may be employed and the resistance of the circuit L<2>, C<3> is minimized by means of a reaction coupling L<11> from the rectifying valve V<3>, amplification being effected by the valves V<1> and V<2>, while local oscillations for heterodyne purposes are generated by the valve V' and combined with the received oscillations through the coupling L<5>. The damping of the rejector circuit L<3>, C<3> is adjusted by means of a " coupling condenser " C<10>. Audio-frequency currents are passed by the transformer T<1>, T<2>, to the amplifiers V' and V<6>, and so to the telephone T, which is shunted by a rejector circuit L<12>, C<11> tuned to the heterodyne beat frequency of the desired signals and coupled to the transformer T<1>, T<2>. A number of alternative condensers C<11> - - C<16> is provided for tuning purposes, fine adjustment of the rejector effect being obtained by varying the beat frequency of the signals. Alternatively the rejector circuit or circuits may -be connected either in series or in parallel with the aerial inductance being tuned to the frequency of the undesired signals in the former case and of the desired signals in the latter. In order that the damping of the aerial or like circuit may be unaffected by the negative resistance device coupled to the rejector circuit a variable ohmic resistance may be inserted. In combination with the above arrangements a pair of aerials may be used for directional purposes and for eliminating atmospherics. Two L aerials with their open ends in opposite directions are coupled to the receiving circuit so as to neutralize one another's effects for laterally approaching radiation, while end-on radiation is detected. One aerial is preferably mistuned slightly and the other adjusted towards the same natural frequency until an optimum effect is. obtained. By mistuning the aerials in opposite directions the heart-shaped polar diagram of intensity is obtained. In a modification a non- directional aerial and a frame aerial may act on the same receiving circuit.
Patent GB-656411-A (GB)
Title: Improvements in or relating to the formation of coatings on plastic material
IPC: B29C43/00
Filed: 1948-07-09
Abstract: Optical elements such as lenses, prisms, optical flats, viewing visors, &c., of plastic material provided with a thin scratch-proof film (e.g. 0.0001 to 0.0005 inch in thickness) of melamine- or urea-formaldehyde resin or a mixture thereof, are made by coating a base sheet of transparent organic plastic material with melamine- or urea-formaldehyde condensation product or a mixture thereof, either directly or with an adhesive, polymerizing the film in situ by heating, and pressing the coated sheet between optically smooth surfaces at a temperature at which the base sheet is mouldable and the coating remains hard.  The base sheet may be, e.g., cellulose nitrate, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, polyvinyl alcohol, polyvinyl acetal.  The adhesive may be cellulose nitrate applied in solution (for a cellulose base) or a solution of polyvinyl alcohol followed by cellulose nitrate (for a vinyl base).  The base sheet may be 0.01 to 0.045 inch in thickness.  Moulding temperatures of 220-270 DEG  F. (for cellulose acetate butyrate) and pressures of 100 to 600 pounds per square inch are referred to.
Patent GB-530191-A (GB)
Title: Improvements in emulsifying apparatus
IPC: A47J43/10
Filed: 1939-06-29
Abstract: 530,191. Emulsifying apparatus. BRITISH EMULSIFIERS, Ltd., and CURZON, T. June 29, 1939, No. 19004. [Class 1 (i)] In hand - driven emulsifying apparatus the pump plunger is operated by a crank e which is inserted by means of flattened portions e' in open - ended slots and then retained in position in the bearings by an endwise movement. A collar h and nut i prevent horizontal movement of the shaft. The link f between the crank and the pumpplunger is formed from a piece of sheet material which is made in the form of a stirrer f<SP>3</SP> and has part f<SP>1</SP>, f<SP>2</SP> bent over to embrace the cranks In a modification a collar at one end of the crank and a reduced portion of the nut at the other end engage with the bearings..-The apparatus may be screwed on to a receptacle extended on one side (e.g. somewhat in the shape of a boot), the screw thread being controlled so that the axis of the crank-shaft is at right angles to the longitudinal axis of the extended part of the vessel. Specification 448,775 is referred to.
Patent GB-591906-A (GB)
Title: A process for the manufacture of pigments from cashew nut shell liquid and its derivatives
IPC: C09B39/00
Filed: 1944-10-04
Abstract: A pigment is obtained by coupling a diazotized amino compound with cashew nut shell liquid or its derivatives, suitably in aqueous caustic soda solution.  Specified diazo components are aniline, o-chloro-aniline, m-chloroaniline, o-nitro-aniline, m-nitro-aniline, 3-nitro-4-aminoazotoluene, a -aminoanthraquinone, 5-nitro-2-aminoanisole, o-anisidine, p-nitroaniline, 3 - nitro - 4 - aminotoluene, 4 - chloro - 2 - amino - anisole, 4-amino-6-benzoylamino-1 : 3-xylene, 5-nitro-2-aminotoluene, 5-chloro-2-aminotoluene, 4-nitro-2-aminotoluene, 2 : 5-dichloroaniline, 4-nitro-2-aminoanisole, 6-chloro-2-aminotoluene, b - naphthylamine, benzidine, 3-amino-6-benzoylamino-4-methoxytoluene, o-tolidine, dianisidine, 3-nitro-4-aminophenetole, 4-benzoylamino-2 : 5-diethoxyaniline, 4-amino-41-methoxy-diphenylamine, 4-amino-31-methoxy-diphenylamine, 4 : 41-diaminodiphenylamine.  In examples: (1) diazotised aniline is coupled with cashew nut shell liquid in aqueous alcoholic solution containing caustic soda and sodium carbonate to obtain a red oil pigment; (2) diazotized o-chloroaniline is similarly coupled with anacardic acid to obtain a brownish yellow pigment; (3) tetrazotized o-tolidine is similarly coupled with cashew nut shell liquid to obtain a purple pigment.
Patent GB-737574-A (GB)
Title: Improvements in or relating to methods of manufacturing panel-like structures
Inventor: GRIFFIN PAUL
IPC: B27D3/00
Filed: 1952-07-28
Abstract: 737,574. Making aircraft. BRISTOL AEROPLANE CO., Ltd. July 6, 1953 [July 28, 1952], No. 19065/52. Classes 83 (2) and 83 (4). Stretching.-A method for attaching structural members, e.g. stiffeners, to one surface of a skin material in the manufacture of panel-like components for aircraft structures is characterized in that the bonding process is carried out partly at a predetermined bonding pressure and partly at a lower pressure, the bonding pressure being below said predetermined bonding pressure for at least part of the time in which the temperature is being raised to a predetermined level, and wherein the skin material is tensioned in the plane of the skin at least in one direction in said plane and at least when the bonding pressure is less than said predetermined bonding pressure. An hydraulic press for carrying out the invention has platens 10, 12 heated by steam admitted through pipes 13, 14. A light metal alloy sheet 15 is placed on the lower platen 12 and longitudinally tensioned by four weights 19 of about 100 lb. each supported by trestles 23. The sheet may be transversely tensioned in similar manner if desired. Stringers 16 and angle-section members 17 are placed longitudinally and transversely respectively, on the alloy sheet, all engaging surfaces being coated with a synthetic thermosetting bonding medium. A pressure of about 100 lb. square inch is applied to the flanges of the stringers and the angle-members by the platen 11 through wood or hard rubber packing-pieces 18 and then over a period of 10 to 15 minutes the assembly is heated to the curing temperature of 150‹ C., the bonding pressure being momentarily relieved at intervals of 5‹ C. The temperature is held at 150‹ C. for about 20 minutes whereafter it is gradually reduced over a period of 5 to 10 minutes to 90‹ C., the bonding pressure again being relieved at intervals of 5 ‹ C. In a modification the tension to the sheet-metal is only applied when the bonding pressure is relieved at the 5‹ C. intervals. In another modification, when the sheet-metal is continuously tensioned the bonding pressure is varied in direct proportion to the temperature, e.g. gradually increased to the curing temperature during the initial period and gradually decreased during the third period, the bonding pressure being held at 150‹ C. during the intermediate curing period.
Patent GB-777184-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04M1/60
Filed: 1955-07-01
Abstract: 777,184. Substation circuits. WESTERN ELECTRIC CO., Inc. July 1, 1955 [July 16, 1954], No. 19085/55. Class 40 (4). A " distant talking set," comprising a microphone 10, a loud-speaker 12 and associated amplifiers 17 and 18, may be brought into use instead of the normal handset 25, 26 by momentarily depressing the "on" button of a switch 15. This energizes a relay 22, which effects the necessary switching operations and locks in a circuit which may be broken either by the depression of the " off " button of switch 15 or by the lifting of the normal handset from its switchhook 23. The dial 27 is connected on the line side of the switch hook contacts so that it may be used in the normal way in an outgoing call employing either the handset or the distant talking set. A non-linear impedance network B compensates for variations in line impedance and a thermistor 57 limits the level of singing in the loud-speaker 12. The distant talking set includes a volume control 13 and an indicating lamp 16.
Patent GB-658930-A (GB)
Title: Device or machine for marking ready-made clothes
IPC: D06H1/00
Filed: 1949-07-20
Abstract: 658,930. Sewing. PEDERSEN, J. M., and LIPPERT, F. G. W. July 20, 1949, No. 19088. [Class 112] Marking work for sewing.-In apparatus for marking several layers of cloth by passing a threaded needle through them and leaving the thread in them to be subsequently cut so that a short piece remains in each layer, cutting means are provided for mechanically severing the thread between each layer and the next. The apparatus shown comprises a number of rails 6 spaced to receive one layer of cloth between each pair, a needle 5 carried by a hand-operated needle-bar 4, a hook 23 actuated from the needle-bar to unthread the needle as it is withdrawn, and a set of plates sliding in the rails 6 and actuated from a pull-rod 31 to cut the thread by forcing it against knives fixed in the rails. The unthreading device 23 is carried by a 'spring-projected sliding bar 22 connected to a lever 21 of which the other end is attached to a link 20 with a pin 19 engaging a slot 16 in a plate on the needle-bar 4; this slot is formed so that the pin 19 is held against movement to the right until the needle-bar is at the bottom of its stroke, when it is freed to allow the device 23 to be projected to engage the thread, a plate 17 at the corner of the slot being pivoted to allow the needle-bar to be lifted while the pin 19 is moved to the left by a cam slope in the slot 16 behind the plate 17. The sliding plates which press the thread against the fixed knives are attached to a pin 26 sliding in slots in the rails 6 and linked at top and bottom to a rod carried by arms on a spindle 28 which is rotated through an angle by a pull-rod 31: the knives are fixed at a short distance from the needle-holes in the rails, so that the thread is pulled into short loops before being cut.
Patent GB-589383-A (GB)
Title: Resilient mountings
IPC: F16F13/04
Filed: 1943-11-16
Abstract: 589,383. Resilient mountings. LORD MANUFACTURING CO. Nov. 16, 1943, No. 19113. Convention date, Oct. 29, 1942. [Class 108 (iii)] In a resilient mounting having supported and supporting members 9, 10, a sandwich unit is provided having base and cap-plates 4, 5 connected by a rubber or like resilient element, the cap-plate F being secured to the load-supporting member 10 by means extending freely through the resilient element, which means is resiliently connected to the supported member 9, while the base plate 4 slidably engages the supported member 9 or a friction member secured thereto to provide for friction damping when the mounting is under load. As shown in Fig. 1, the mounting comprises units 1, 2, each consisting of plates 4, 5 connected by a resilient sleeve; and a third unit 3 consisting of inner and outer sleeves 6, 8 connected by a resilient sleeve 7. Unit 3 is secured by the sleeve 8 to the supported member 9 while a stud 11 secured to the supporting member 10 extends centrally through the sleeve 6, plates 4, 5 and through spacing sleeves 12 arranged between the sleeve 6 and plates 5. Normally, the resilient sleeves are unstressed but with axial load, the top or bottom sleeve is compressed and the sleeve 7 is subjected to shear stress. Under combined axial and horizontal loads, the top or bottom sleeve is compressed and subjected to shear stress due to frictional engagement of its plate 4 with the member 9 and the sleeve 7 is subjected mainly to compression and tension stresses. A number of somewhat similar constructions are shown in which (a) the units 1, 2 are both normally compressed so that under a horizontal load they are subjected to shear stress due to fric-, tional engagement of the plates 4 with the member 9; (b) the units 2,- 3 are pre-loaded against each other ; and (c) the base plates 4 of the units 1, 2, Fig. 13, are secured against lateral movement by engaging flanges 15a, 15c on plates secured to the supported member -so that under combined axial and horizontal loads, the plates 4 bear laterally on the flanges 15a, 15c to create frictional resistance to movements parallel to the axis of the mounting. The Specification as open to inspection under Sect. 91 comprises also a construction in which the base plates of the top and bottom sleeves are fixed to the supported member. This subject-matter does not appear in the Specification as accepted.
Patent GB-1117178-A (GB)
Title: Method of making capsules by coacervation
IPC: B01J13/10
Filed: 1967-04-26
Abstract: 1,117,178. Making capsules. NATIONAL CASH REGISTER CO. 26 April, 1967 [27 May, 1966], No. 19130/67. Heading B8C. Capsules, of up to about 1¢ cms. diameter and composed of a hydrophobic solid or liquid core surrounded by a hydrophilic polymer shell, are produced by forming a dispersion of core material (of the desired dimensions) in an aqueous solution of at least one hydrophilic polymeric material and causing a coacervate phase comprising the polymer(s) to form, in which phase the coacervate particles are " stringy " rather than globular, by adjustment of pH and temperature. The stringy coacervate is able to surround and encapsulate the relatively large cores and the capsules formed may be hardened, and dried by conventional procedures. In examples, viscous liquid cores (pigment in silicone fluid and dioctyl phthalate) are encapsulated in shells of gelatin/carrageenan and gelatin/gum arabic/ethylene-maleic anhydride copolymers.
Patent GB-283560-A (GB)
Title: Improvements relating to colour kinematography
IPC: G03C7/22
Filed: 1927-07-20
Abstract: 283,560. Gsch÷pf, R. Jan. 15, 1927. [Convention date]. Colour photography; dye-toning. - Negative colour records made respectively through a yellow filter, and through red and/or green filters adapted also to transmit blue, are printed on a film carrying emulsion on both sides, and one or more of the positives so produced are coloured, by first dyeing the image with one colour, then reducing the colour until the half-tones are free from dye, and finally dyeing the image with a different colour. In one example, negative records are taken simultaneously on films d,e, sensitized respectively for yellow-green with pinaflavol and for red with pinachrome-blue or pinacyanol-blue, in a camera having reflectors i in front of which rotate respectively a filter f of which one half is red but also transmits blue and the other half is yellow, and a filter g of which one half is green but also transmits blue and the other half is yellow. The red filter may comprise rhodamine B and acid violet, and the green filter acid green and patent blue, as distinguished from the usual red and green filters comprising respectively rhodamine B and tartrazine, and acid green and tartrazine. The films d, e thus receive alternately yellow records k and respectively red and green records l, m. These negatives are printed in register on opposite sides of a film carrying emulsion on both sides separated by an opaque wash-out layer, so that on the one hand the two yellow impressions coincide and on the other the red and green records coincide. The images on both sides are converted into a compound such as copper sulphocyanide acting as a mordant for basic dyes, whereafter the positive from negative d is dyed bluish-green as with brilliant green, and that from negative e is dyed bluish-red as with rhodamine or fuchsine. The images from the yellow records k are protected with varnish, and the remaining images are treated with a reducing bath, containing for example potassium bichromate and sulphuric acid, until the dye has been discharged from the half-tones. This bath does not affect the mordant, so that on now immersing the film in a bath of yellow dye such as thioflavin yellow, the half-tones are stained yellow while the remaining parts retain their original colours and merely acquire a yellow tinge. The film is now ready for projection. In another example, two colourrecord negatives are made simultaneously, one through a yellow filter upon a film sensitized for yellow-green, and the other through a red filter which also transmits blue, upon a film sensitized for red. These negatives are printed as before upon a. positive film sensitized on both sides; the positive from the negative taken through the red filter is coloured blue, as with methylene blue, and the other positive is first coloured with rhodamine red, then reduced to discharge the red from the half-tones, and the image is finally dyed yellow. The finished positive on projection exhibits all the colours approximately truly, excepting violet which is not accurately reproduced.
Patent GB-1318168-A (GB)
Title: Method of manufacturing an incandescent electric lamp
IPC: H01K1/56
Filed: 1972-04-26
Abstract: 1318168 Phosphorus oxynitride PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 April 1972 [29 April 1971] 19356/72 Heading C1A [Also in Division H1] Phosphorus oxynitride, PON, may be obtained by heating phosphorus oxytriamide PO(NH 2 ) 3 , in a vacuum or in the absence of air. This oxynitride is used as a getter in incandescent electric lamps, and may be deposited on to the lamp filament from a suspension of the material in a solution of cellulose nitrate in methyl-isobutyl-ketone.
Patent GB-263089-A (GB)
Title: Improvements in or relating to a machine for winding spirals provided with one or more supporting wires
IPC: H01J19/00
Filed: 1926-08-05
Abstract: 263,089. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Dec. 16, 1925, [Convention date]. Electric fittings.-In a machine for forming wire coils such as those used for the grids of thermionic valves, wherein the wire is coiled on one or more supporting wires, the supporting wires, guided by a template, are fed continuously forward while the coiling- wire is wound on by a rotary winding- head and secured to the supporting wires. In Figs. 1 and 2 two supporting wires 4, 5, fed from drums 6, 7, through a bush 2 move over a grooved metal template 8 passing through the centre of the winding head 9 and are finally led over a drawing-roller 10. The coiling wire 19 is fed over a guide 21 from a bobbin 20 fixed to the winding head which is rotated by a pulley 1. The winding-head carries a notching disc 23 and a spring-pressed rolling-over disc 25, the former serving to notch the supporting-wires to receive the coils and the latter to close over the notches after the coil has been wound. Both discs are radially adjustable for winding coils of different sizes. The rolling-over disc is mounted on a bell-crank lever 28 and its adjustment is determined by a screw abutment 63. This disc is also longitudinally adjustable by means of packing washers for making coils of different pitches. The drawing-roller 10 is rotated from the pulley 1 by spur gearing 11 - - 13, shaft 14, and worm gearing 16 and is provided with a peripheral trough to receive the coil and its supporting wires. Four pairs of grippers 35 are mounted round the drawing-roller, each pair comprising levers 36 pivoted at 37. The long arms of the levers engage a fixed track which is so arranged that the jaw portions grip the wires at the point A, Fig. 8, and release it just before reaching the point C. Additional pegs 41 are spaced in parts round the roller between the grippers 35 and form additional supports for the supporting-wires so that, during its passage over the drawing roller the coil is formed in straight lengths which may be afterwards cut up to form separate grids for thermionic valves. In order that the ends of these lengths may be straightened out for attachment to the grid supports the rolling-over disc 25 is adapted to be withdrawn periodically so that these end portions are not sealed in the notches formed by the disc 23. This is effected by cams 44 on the shaft 18 which act with lever mechanism, Fig. 7, to shift a pair of spring pressed sleeves 50 connected to a ring 56 supporting a roller 31 on the bell crank carrying the rolling- over disc. Normally the roller 31 bears against an inclined portion of the ring 56 but when the ring is displaced by the cam 44 the roller is moved so as to withdraw the rolling-over disc from the work.