baber/WOPTO huggingface dataset:
Patent GB-630317-A (GB)
Title: Improvements in flotation equipment
IPC: B63C9/115
Filed: 1946-09-24
Abstract: 630,317. Fibrous materials agglutinated by adhesives. THURSTON, A. P. (Owens-Corning Fiberglas Corporation). Sept. 24, 1946, No. 28537. Drawings to Specification. [Class 140] [Also in Group XXI] Intertangled glass fibres of diameters of from 0.0001 to 0.0020 inch coated with an organosilicon compound are bonded together by a synthetic resin, e.g. phenol- or urea-formaldehyde, furfural or coumarone-indene resins, polystyrene, polyvinyl chloride or polyvinyl acetate. The organo-silicon compound may be a substituted silane of the formula R 1 SiX 3 , R 1 R 2 SiX 2  or R 1 R 2 R 3 SiX, where R 1 , R 2  and R 3  are either alkyl or aryl groups and X is a hydrolysable group such as halogen or alkoxy, preferably ethoxy or methoxy or the compound may be a polysiloxane such as dimethyl-, diethyl-, di-dodecyl-polysiloxane. The organosilicon compound may be applied to the glass fibres by dipping or spraying prior to, simultaneously with, or after the bonding agent. The treated glass fibres are used as a buoyancy material, e.g. in buoys, floats, life-jackets or rafts.
Patent GB-1235706-A (GB)
Title: Process for the production of microcapsules
Inventor: HARBORT LUDWIG
IPC: C09K23/54
Filed: 1968-06-14
Abstract: 1,235,706. Carbon paper &c. GUNTHER WAGNER PELIKAN-WERKE. 14 June, 1968 [23 June, 1967; 24 June, 1967], No. 28559/68. Heading D2B. [Also in Division B8] Colour transfer papers are made by coating onto paper sheets or incorporating into the sheets, microcapsules consisting of a cellulose wall comprising a pigment enclosing core material comprising a dye or dye precursor (see Division B8). Specific examples relate to coating paper with microcapsules as described above in which the pigment is ZnS or TiO 2  and the dye or dye precursor is 3-methyl spirodinaphthopyran above or with N-benzoylleucomethylene blue and to incorporating similar microcapsules into paper pulp from which sheets of paper are then made.
Patent GB-1580654-A (GB)
Title: Semiconductor components
IPC: H01L23/29
Filed: 1977-07-08
Abstract: Instabilities of the reverse and forward blocking-state characteristics of thyristors and of the blocking-state voltage-current characteristics of diodes and transistors can be ascribed to changes in the properties of the passivating protective layers and/or the semiconductor surface. At that point, where the pn junction reaches the surface, a new protective layer (8) consisting of silicon is vapour-deposited. This makes it possible to eliminate the instabilities and to increase significantly the yield of usable semiconductor components. The passivating protective layer is designed, in particular, for semiconductor components having a high reverse voltage or blocking voltage. <IMAGE>
Patent GB-1445506-A (GB)
Title: Manufacture of knitted articles
IPC: D04B1/24
Filed: 1974-06-27
Abstract: 1445506 Tights BILLI SpA 27 June 1974 [2 July 1973] 28665/74 Heading D1K Tights are knitted on a circular knitting machine comprising first and second leg portions 1, 3 knitted by continuous circular motion and an intermediate body portion knitted by reciprocatory knitting to form a rectangular opening. Legs 1, 3 have toes 1A, 3A, closed on the machine. Band 16 at the commencement of the waist opening is formed by reciprocatory knitting with elastic yarn from feeds 22, 24 while at the same time parts 10, 12 are being formed by yarn from feeds 26, 28 there being an overlap at the edges of the fabric formed by the various feeds. The fabric is then cast-off along edge 14A and bands 20 are knitted respectively by feeds 22, 24 with the continuation of parts 10, 12 by feeds 26, 28 by reciprocatory knitting, these parts 10, 12 being shaped to form the crotch. The needles from which the stitches were cast-off are reinserted and band 18 is knitted as for band 16. Turned welts may be formed on bands 16, 18-114A, 114B, Fig. 10.
Patent GB-162320-A (GB)
Title: Improvements in contacts for electrical switches, switch fuses, plug connectors and the like
IPC: H01H1/42
Filed: 1919-11-20
Abstract: 162,320. Shanahan, H. F. Nov. 20, 1919. Contacts; bases.-A self - adjusting fixed spring-clip contact for knife switches, switch fuses, plug couplings, &c. comprises a pair of contact jaws located in an opening in the base and pressed together by spiral springs in opposed lateral holes of the base, the jaws being connected to a single terminal in a recess of the base by flexible conducting members. In the form shown in Fig. 1 applied to a knife switch, the jaws 10 between which the knife blade 11 is forced are provided with screws 11<x> and washers 15 by means of which they are secured to spiral springs 12 in recesses 13 and to flexible conducting-strips 14 which are bent under and clamped beneath the terminal 9 located in a recess 7 of the base separated from the recess 8 that accommodates the contacts by partitions 6. The contacts may be prevented from rising out of their recesses by flanges projecting from the side walls of the base or by the slotted cover. The recesses may be constituted by a slotted section which is dovetailed on to the base proper. For switches of large capacity the contact 10 on each side may be duplicated. One contact only may be adjustable and the other fixed and the conducting strips 14 may be replaced by flexible cable. In the application to wall plug contacts, the adjustable contacts 10 are each made semicircular so as to constitute a self-adjusting socket.
Patent GB-1003465-A (GB)
Title: Improvements in and relating to proportioning weigh feeders for loose bulk materials
IPC: G01G13/18
Filed: 1962-07-26
Abstract: 1,003,465. Automatic feed weighers. ELBAWERK, ETTLINGER BAUMASCHINEN-UND HEBEZEUGFABRIK G. m.b. H. July 26, 1962 [July 27, 1961], No.28812/62. Heading G1W. The discharge gate or shutter of a hopper is given a short to and fro motion to encourage even flow of material to a weigh container when the container is almost full, and to prevent "arching" such as may occur with moist sand. As shown Fig. 1 a hinged shutter 3 on a hopper 2 is linked by a piston rod 5 to a piston in cylinder 6. A two way valve 9 operated by a solenoid 10 applies fluid pressure to the piston through pipe 7 or 8 to open or close respectively the hopper shutter 3. A cam head 18 (Fig. 2) on the piston rod extension 17 cooperates with the follower roller 14 of a limit switch 12. When a weigh container 4 is almost the required weight a pulse is transmitted from the weigher (not shown) to operate a relay 11 which connects the limit switch 12 into circuit with the solenoid 10 and initiates the closing movement of the piston. Movement of the piston and cam head 18 changes the position of the limit switch which changes the position of the solenoid valve 9, 10, thus reversing the piston motion and again the position of the limit switch and the cycle is repeated. The piston is thus reciprocated the shutter 3 is oscillated between open and closed positions. The reciprocation continues until the correct weight is in the container 4 when the relay 11 is de-energized by mechanism on the weigher and the shutter 3 is finally closed. The limit switch then rides off the cam head via cam surface 15. The amplitude of oscillation of the shutter can be varied, by substituting another cam means, and thereby the flow of material can be controlled.
Patent GB-534873-A (GB)
Title: Improvements in and relating to follow-up devices
IPC: G05D3/18
Filed: 1939-10-27
Abstract: 534,873. Photo-electric follow-up devices. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 27, 1939, No. 28816. Convention date, Oct. 29, 1938. [Classes 40 (iii) and 40 (v)] [Also in Group XXXVIII] A shaft 12 is made to follow the rotation of a shaft 10 by means of a light polarizing disc 13 rotated by the shaft 10 in conjunction with one or two polarizing discs 14, 15 rotated by the shaft 12, the polarized light passing through the discs affecting photo-electric cells 17, 19 to control a motor driving the shaft 12. As shown in Fig. 2, the planes of polarization of the discs 14, 15 are at right angles to each other, and a light balance is obtained when the plane of polarization of the disc 13 is angularly midway between that of the two discs 14, 15. As shown in Fig. 2, the two photo-electric cells 17, 19 are in the opposite circuits of a reversible motor 11 driving the shaft 12 and the discs 14, 15. If the disc 13 turns out of the light balance position, the motor 11 is driven to restore the balance. If one cell fails, the circuit is still effective to make the shaft 12 follow the shaft 10 in one direction. To make the shaft 12 follow the shaft 10 in both directions with only one cell, say cell 17, the other cell 19 is replaced by a resistance 21 adjusted to balance the resistance of cell 14 for the desired angular relation of the shafts. If the shaft 10 then turns out of this position in one direction or the other, the resistance of cell 17 rises or falls causing unbalance of the circuits of motor 11 in one direction or the other resulting in shaft 12 being driven to follow shaft 13. In the arrangement shown in Fig. 3, a single lamp 16 is used, energized by a transformer 23. The light is reflected to the polarizing discs 13, 14, 15 by mirrors 161, 181. The photo-cells 17, 19 form a primary bridge circuit with resistances 30, 31. This primary bridge circuit is connected to the grid of a triode 32 forming a secondary bridge circuit with a triode 33 and two resistances 34, 35. This secondary bridge circuit is connected to the grids of a pair of gas-discharge tubes 43, 44 in the opposite circuits of a reversible motor 55 driving the shaft 12. In addition, motor 55 drives a d.c. generator 37 energized by an independent field and serving to vary the normal bias of triode 33 produced in the resistance 36 according to the speed and acceleration of motor 55 which produces variations of current in the resistances 39, 38. This tends to restore the balance of the secondary bridge circuit including the triodes 32, 33 before the shaft 12 has actually overtaken the shaft 10, so that hunting is avoided. The d.c. supply is derived from a rectifying unit 24; and the a.c. supply for the discharge tubes 43, 44 is derived from a transformer 56. Another transformer 51 fed through a condenser 52 producing a phase rotation of approximately 90 degrees adds an a.c. potential to the d.c. potential produced in resistance 49 to bias the gas discharge tubes.
Patent GB-617883-A (GB)
Title: Improvements in or relating to apparatus for playing gramophone records
IPC: G11B3/085
Filed: 1945-10-31
Abstract: 617,883. Automatic gramophones. METCALFE, C., and RAE, A. J. Oct. 31, 1945, No. 28834. [Class 40 (ii)] In a gramophone apparatus having a camdisc 4 for effecting automatic lifting, lowering and placing of the pickup, an adjustable eccentric member 11 is mounted on a cam-disc 4, and comes into contact with a leaf-spring 9 fixed to the rotatable post 3 carrying the pickup arm, and effects automatic lifting of the pick-up until the needle is above the soundgroove, after which the leaf-spring 9 yields to disengage the member 11. Specification 617,864 is referred to.
Patent GB-1319285-A (GB)
Title: Die and method for extrusion of cellular plastics
IPC: B29C48/30
Filed: 1970-06-15
Abstract: 1319285 Extruding foamed thermoplastics UNIROYAL Inc 15 June 1970 [15 July 1969] 28840/70 Heading B5A [Also in Division C3] A thermoplastic, e.g. acrylonitrile butadiene stryene, or polyvinylchloride rod, tube, or sheet, is extruded with a noncellular portion integral with a cellular closed cell portion thereof, by heating thermoplastics containing decomposable blowing agent, e.g. benzene sulfonyl hydrazide, azodicarbonamide or p-toluene sulfonyl semicarbazide, within the extrusion die so that the temperature of the non-cellular portion is maintained below, and that of the cellular portion is raised above, the expansion temperature of the blowing agent. In the preferred embodiment, a flat sheet is extruded through sharply pointed edges of a die 8, with an unexpanded skin 31 enclosing an expanded core 30, the different extrusion temperatures whereof are obtained by independently controlled electrical or fluid heating of the die body 1, and of a cylindrical element 10 extending across the die width. The thickness of the unexpanded material may also be regulated by the screw speed, or by the axial spacing between the die outlet and element 10; the heating of each side of the die may be varied or the element 10 may be transversely adjusted to produce a thicker unexpended layer on one side.
Patent GB-672295-A (GB)
Title: Improvements in and relating to display cases
IPC: A47F3/00
Filed: 1949-11-10
Abstract: 672,295. Showcases. BEDWELL, T. V., and NEWLANDS, W. Nov. 7, 1950. [Nov. 10, 1949] No. 28882/49. Class 52 (i). A sheet 1 of material, preferably transparent, is bent to form an open-sided figure and mounted in grooves in a pair of end plates 8 which serve as legs and are detachably secured together by a tie-rod 14 or equivalent means. If opaque material is used for the sheet 1 a window is provided therein.
Patent GB-672621-A (GB)
Title: Apparatus for affixing capsules to bottles and the like
IPC: B67B3/02
Filed: 1950-11-27
Abstract: 672,621. Capsuling. BETTS & CO., Ltd., (Daffau, G.). Nov. 27, 1950, No. 28926/50. Class 125(ii) Capsuling apparatus for bottles or the like comprises a rubber cap or ring 30 contracted about the cap by the pressure of a cam 27 and a bottle rest 5 raised by a roller 18 on an arm 16 rotated by a spring- loaded chain and sprocket device 20, means being provided sequentially to free the device 20 for raising the rest 5, to effect the capsuling, and to render the device 20 inoperative so that the rest 5 can descend again. The machine shown comprises a central pillar 3 rotated by a gear 2 and carrying a table 4 having bottle rests 5 and a table 25 carrying exhausting heads 43. For each bottle rest and associated capsuling head there is provided on the table 4 a member 6 associated with a slide block 7 raised and lowered by rollers 8 engaging a fixed cam track 9. Bottle rests. The block 7 has a projection 14 and when the block is lowered the lever 16 pivoted at 17 is rotated clockwise by the spring-loaded chain and sprocket arrangement 20 so that the roller 18 engages a plate 19 to lift the stem 21 of the bottle rest 5. This continues until the lever 16 engages a stop 23 so positioned that the lever is then past top-dead-centre position so that pressure on the bottle does not lower the rest. When the block 7 is raised the projection 14 engages a roller 15 to rotate the lever 16 anticlockwise to allow the rest 5 to descend. The rest stem 21 contains a spring 22 which limits the pressure applied to the bottle. Capsuling heads. The block 7 is connected by two springs 11 to a rod 10 vertically reciprocable in a sleeve 35 in the table 25. A sleeve 34 on a sleeve 42 has pivoted thereto a slide block 40 riding in a slot 41 in an arm 12 eccentrically pivoted at 26 and having the cam 27 bearing on a roller 28 acting through pistons 29, 38 to compress the resilient capsuling cup or ring 30. Downward motion of the rod 10 thus effects the capsuling but if undue resistance occurs, the springs 11 give and a plate 13 rises from the table 4. A foot 32 urged by a spring 33 helps to eject a capsuled bottle. The head can be adjusted to takedifferent heights of bottle by raising the table 25. The effective length of the rod 10 may be varied by adjusting the position of the sleeve 42 by nuts 36, 37. The force exerted by the cam 27 can be varied by changing the eccentricity of the axes 26 by a nut 39.
Patent GB-474108-A (GB)
Title: Improved insulated electrical conductor
IPC: E05F13/04
Filed: 1936-10-24
Abstract: 474,108. Cables. ROCKBESTOS PRODUCTS CORPORATION. Oct. 24, 1936, No. 28981. Convention date, Oct. 24, 1935. [Class 36] A cable comprises a metallic conductor 2 insulated by a plurality of insulating layers one of which is a relatively thin layer 1 of rubber hydrochloride and another of which is a relatively thick layer 4 of asbestos, outside the layer of rubber hydrochloride. The rubber hydrochloride is applied as a film tape, in a number of layers, either directly to the conductor, Fig. 1, or over a layer 3, Fig. 2, of felted asbestos, preferably impregnated. The cable may be passed through a bath of nameproof insulating compound at 110-150‹ C. to saturate the asbestos and to seal the layers of rubber hydrochloride into a continuous waterproof tube: it is then mechanically squeezed to compact the asbestos. An outer covering of asbestos braid may be applied. In the case of a multiple conductor cable, Fig. 3, the conductors 2 are first insulated as in Fig. 1 or Fig. 2, twisted, covered with felted asbestos 5, rubber hydrochloride 6 and felted asbestos 7, subjected to a sealing and impregnating treatment and, if desired, covered with asbestos braid. The impregnating compound may be chlorinated naphthalene or stearin pitch. The layer 3 of asbestos may be impregnated with lacquer, asphaltic solutions or aqueous solutions of starch.
Patent GB-617391-A (GB)
Title: Improvements in or relating to means for introducing inductance into electric circuits
IPC: H03H5/00
Filed: 1946-09-30
Abstract: 617,391. Loading; preventing inductive disturbance. STANDARD TELEPHONES & CABLES, Ltd., and JACOBSEN, B. B. Sept. 30, 1946, No. 29089. [Class 40 (iv)] [Also in Group XXXVI] An electric impedance coil for high-frequency cir cuits consists of a coaxia conductor 1 which is wound on a magnetic core 4. The core of permalloy tape o pressed iron dust may be of any convenient cross section and may be annula or straight. The arrange ment reduces cross-talk by reducing longitudinal current without reducing transverse currents.
Patent GB-1514406-A (GB)
Title: Wire matrix print head printers
IPC: B41J2/255
Filed: 1976-07-14
Abstract: 1514406 Selective printing INTERNATIONAL BUSINESS MACHINES CORP 14 July 1976 [1 Aug 1975] 29246/76 Heading B6F A wire matrix print head has at least two linear arrays of wires and the disposition of the arrays is changeable so that in one position the corresponding wires in each array are aligned with the printing line and in another position they are not. The arrays thus define a coarse matrix for relatively fast printing in the first position and a finer matrix for slower speed printing in the second. As shown in Fig. 1 an array 11 is fixed to print head carriage 1 and array 9 is vertically displaceable relative to it by a cam 21. Alternatively; see Fig. 4 the two arrays QQ<SP>1</SP> and RR<SP>1</SP> are fixed relative to each other but are rotatable between positions P, S which provide the fine and coarse matrices respectively.
Patent GB-739081-A (GB)
Title: Improvements in or relating to a method of forming a film on an irregular surface
Inventor: SEATS PETER
IPC: H01J29/28
Filed: 1952-11-20
Abstract: A method of forming a film on a granular or other irregular surface such as the fluorescent screen of a C.R.T. comprises applying to the surface a film-forming substance such as a solution of nitro-cellulose having mixed therewith a quantity of a liquid such as water forming an emulsion, allowing the liquid to separate from the solution so as to fill the irregularities in the surface, allowing the film forming substance to form a coherent film on the liquid and removing the liquid such as by inverting the C.R.T.  A current of warm air can then be passed over the surface and aluminium evaporated on to the film.  The solution can comprise 1 gr. of nitro-cellulose, 775 mls. of ethyl acetate, 25 mls. of amyl acetate and 0.2 mls. of butyl phthalate. Polyethylene or polystyrene dissolved in a paraffin such as octane or decane may also be employed as the film-forming solution and an alcohol such as propyl alcohol as the liquid.
Patent GB-375173-A (GB)
Title: Improvements in ribbon looms and particularly let-off and take-up means therefor
IPC: D03D35/00
Filed: 1931-10-22
Abstract: 375,173. Supplying warps in ribbon looms. HARRIS, W., 202, Union Avenue, Paterson, New Jersey, U.S.A. Oct. 22, 1931, No. 29332. [Class 142 (ii).] In ribbon looms wherein the warp supply spool 9 rotates the ribbon spool, supplementary warp 25 is supplied from a spool 21 mounted on an independent spindle 20 and tensioned by means of a band 30 attached to a stud 29 and weight 32, and wrapped around a pulley &c. 22 coupled, as by studs to the spool 21. The main warp 8 passes from the spool 9 around guide rollers 10 one or more weights 13 being suspended from a loop 12, thence over a glass bar 7 on the beam 6, the formed ribbon 14 extending over a glass bar 3, a sand roller 15, a pressure roller 16 and a glass bar 17 to a spool 18 mounted on the same spindle as the spool and rotating therewith. The warp 25 as shown is guided over a roller 26, then over some of the rollers 10, a weight 28 being suspended in a loop 27 of the warp 25. The weights are connected by a wire &c. 32. The member 22 holds the spool 21 fast until the loop 27 has been taken up by the weaving sufficiently to raise the weight 28 and thereby also the weight 31 whereby the spool 21 is released and the weight 28 draws off warp therefrom, and so on.
Patent GB-709142-A (GB)
Title: Improvements in or relating to electric detonators for blasting and like purposes
IPC: F42B3/185
Filed: 1951-12-14
Abstract: 709,142. Blasting fuzes. HERCULES POWDER CO. Dec. 14, 1951 [June 14, 1951], No. 29396/51. Class 9(1) An electric blasting cap has a metal shell 11 containing a detonating base charge 10 and a primary charge 12 such as a diazodinitrophenol and potassium chlorate mixture. Through a recessed plug 13 the bare lead wires 14 are passed and joined by a bridge wire 16 in the recess 15 which is filled with an igniting composition 17. Above the plug 13 the bared wires 14 are surrounded by a cylindrical body 18 of semi-conductive material  spaced from the inner wall of the shell, which is closed by asphaltic sealing material 20 and a top seal 21 of sulphur. The annular space 19 between the body 18 and the shell is substantially less than the distance between the lead wires and the shell in the neighbourhood of the ignition composition 17. In order to increase the diameter of the bridge wire a metal or alloy of high specific heat and high specific resistance is used, e.g. nickel-chromium alloy. The semiconductive body 18 consists of wax in which is distributed a conductive metal powder e.g. aluminium or carbon; 60-70 per cent of aluminium in 40-30 per cent of wax is preferred. The wax may be candellila, montan, carnauba or synthetic wax. Mixtures of waxes may be used. Instead of wax rubber, resinous and other materials may be used. Static discharge tests were made using blasting caps in which the proportions of conductive material in the body 18 and the dimensions of this body and the diameter of the bridge wire were varied. The results of these tests are compared with those for conventional blasting caps. The base charge 10 may be P.E.T.N., cyclonite, tetryl or T.N.T. The primary charge may be lead azide, lead styphnate, mercury fulminate or diazodinitrophenol or may be omitted altogether. The cavity ignition assembly 15, 17, may be replaced by a matchhead ignition assembly. Specification 555,969 is referred to.