baber/WOPTO huggingface dataset:
Patent GB-1044070-A (GB)
Title: Field-effect transistors
IPC: H01L21/316
Filed: 1963-12-09
Abstract: 1,044,070. Semi-conductor devices. RADIO CORPORATION OF AMERICA. Dec. 9, 1963 [Dec. 17, 1962], No. 48592/63. Heading H1K. The gate structure of a field effect transistor extends opposite to the source and part of the channel and has one end nearer to the source than the other end is to the drain. As shown, Fig. 3, an insulated-gate field-effect transistor is produced by chemically polishing a P-type silicon wafer 43, and then depositing a layer of silicon oxide doped with phosphorus on the wafer by thermal decomposition of suitable compounds carried in an argon stream. The oxide layer is consolidated by heating in an atmosphere of argon containing silane vapour, and the layer is then photo-masked and etched and the wafer heated in oxygen to diffuse the phosphorus in the doped oxide layer into the wafer to form source 51 and drain 53, and also to form an oxide layer 45 on the surface of the wafer to produce an inversion layer 47. Parts of the source 51 and drain 53 are exposed and a layer of aluminium is evaporated over the entire surface and is masked and etched to produce source and drain contacts 55 and 57 and gate electrode 49. The wafer is diced and leads are connected to the electrodes. In a second embodiment, Fig. 4 (not shown), part of the gate electrode is covered with an insulating layer and a second gate electrode is deposited on top of this. In a further embodiment, Fig. 1 (not shown), a field-effect transistor with a junction-type gate electrode is produced by forming a P-type gate region 19 in an N-type single crystal germanium wafer 13 in such a position that it lies opposite the source electrode 15 but not the drain electrode 17. The use of a gate structure offset towards the source reduces the source-gate resistance and the drain-gate capacitance and results in an increase in the transconductance and the operating frequency of the device and reduces the coupling between input and output.
Patent GB-1008284-A (GB)
Title: Improvements in or relating to fluid pressure measuring devices
IPC: G01L13/02
Filed: 1962-12-28
Abstract: 1, 008, 284. Pressure gauges. H. J. ZIMMER. Dec. 28,1962 [Dec. 28,1961], No. 48870/62. Heading G1L. In a fluid pressure device comprising first diaphragm 2, located in a pipe wall 5 and exposed to the fluid pressure in the pipe 1, and a second diaphragm 3, exposed through an aperture 13 to atmospheric pressure the arrangement is such that both diaphragms 2 and 3 are mounted in cylindrical metallic elements 8 and 9 in heat conducting relationship with a housing 4 so as to be at substantially at the same temperature. The ends of the elements 8, 9 behind the diaphragms 2, 3 are conical, Fig. 2 (not shown), so the diaphragms are not deflected beyond their elastic limit.
Patent GB-1404608-A (GB)
Title: Knitting machine having apparatus for the control of needle jacks
IPC: D04B15/78
Filed: 1972-10-24
Abstract: 1404608 Knitting-machines J SCHWARZER 24 Oct 1972 [6 Nov 1971] 48960/72 Heading D1C The needle jack selecting system of a circular machine comprises electro-magnets situated either side of the jack path to deflect the lower end of the jack to an adjacent path so that a butt at the upper end is correspondingly deflected. Preferably the jack adopts three positions so that the corresponding needle is in knit, tuck or rest positions. The jack 23 pivots about a bend 44, which miay be an "S" bend (Figure 8 not shown), resting on a sill 46, and is held in its, trick by a guard (47, Fig 8 not shown). The system comprises electro-magnets 74, 76 simmetrically disposed with respect to a guide channel 57, and permanent magnets 86, 87. The pole pieces of the permanent magnets are protected by plastics foil. By energising the electro-magnets the lower end of the jacks can be selectively deflected into channels 67, 68. A channel 63 is preferably provided so that the jacks can pass undeflected, stabilised by an electromagnet 101 and a permanent magnet 102 situated centrally of the channel and below the jacks. If the butt 24 is swung out of the trick it strikes raise cam 36 to lift the needle to knit track 18; if swung inwards the jack and needle remain idle. In the vertical position of the jack, the, butt strikes a raise cam 37 to lift the needle into a tuck track 19.
Patent GB-1523748-A (GB)
Title: Digital phase locked loop circuit
IPC: H03L7/00
Filed: 1975-11-28
Abstract: 1523748 Automatic phase control GENERAL DYNAMICS CORP 28 Nov 1975 49015/75 Heading H3A A digital phase locked loop for generating timing pulses synchronized with zero crossings of an input data signal comprises: an A/D converter 10 for quantizing. The input data signal to digital quanta; a store 14 for storing the data quantum at the time of occurrence of a timing pulse; a counter 28 responsive to the quantum and stepped to provide carry pulses representative of the timing difference between zero crossings and timing pulses; and a pulse circuit for receiving the carry pulses and adjusting the timing pulses to coincide with the zero crossings. As described, the digital quantum stored at the time of a first timing pulse CL1 is added at 16 to the inverse of the instantaneous quantum and the value of this sum at the time of occurrence of the next timing pulse CL2 is written into a counter 28. This value represents the timing error. The counter is stepped on until it produces an overflow pulse, the count added being representative of the timing difference between the zero crossing and the timing pulses. The output is fed to a divider 30 and logic circuit 36, 38 which produces timing pulses CL1, CL2 corresponding to positive and negative going zero crossings of the input signal. In order to correct for frequency errors a further control loop is provided by feeding the output from adder 16 to another store 22 whose output is fed to a scaling circuit 65 and further store 20. The scaling circuit feeds a selected one of the significant bits to adder 24 where it is added to the signal from adder 16.
Patent GB-1205772-A (GB)
Title: Fuel oil compositions
IPC: C10L1/196
Filed: 1967-10-30
Abstract: 1,205,772. Copolymers. STANDARD OIL CO. 30 Oct., 1967 [31 Oct., 1966], No. 49145/67. Heading C3P. [Also in Division C5] Hydrocarbon fuel oil pour point depressant concentrates comprise organic solvent solutions containing at least 10 weight per cent of a copolymer of 35 to 70 weight per cent ethylene, 1 to 5 weight per cent and 27 to 60 weight per cent of one or more C 1-12  alkyl esters of acrylic and/or methacrylic acid, said copolymer having a melt index of 0.5 to 55 gm/min. at 80‹ C. The solvent may be a hydrocarbon, particularly a hydrocarbon fuel. Many suitable acrylic and methacrylic esters are specified and many examples are given using 2-ethylhexyl and isobutyl acrylates.
Patent GB-986091-A (GB)
Title: Fluid pressure generating device for use in controlling hydraulic brake mechanisms, more particularly on motor vehicles
IPC: B60T11/20
Filed: 1963-12-12
Abstract: 986,091. Hydraulic brakes. FIAT S.p.A., and P. S. BALDWIN. Dec. 12, 1963 [Dec. 15, 1962], No. 49151/63. Heading F2F. An hydraulic brake cylinder 1 has a compression chamber 17 confined by at least one piston 5 biased towards a starting position by a spring 6 and carrying a valve which controls communication between a fluid-supply conduit 4 and the chamber 17; the valve comprising a resilient ring seal 11, with an outer arcuate surface contacting the cylinder wall, floatingly received between abutments 12 and 13 in a circumferential groove 14 in the piston 5, smaller in diameter than the bore of the seal 11 and having conduits 15 at its bottom through the piston body, a rigid ring 18 of bore greater than that of the seal 11 and without radial play with the cylinder wall slidably mounted on the side of the seal remote from the chamber 17 in a groove 19 in the piston which opens towards the groove 14, which is smaller in diameter at the bottom than the bore of the ring 18 and which constantly connects with a way 21 in the piston which connects to the fluid supply conduit 4, and a stop 4a extending into the way 21 to stop the ring in a position where the seal is so spaced from its abutments that communication exists between the compression chamber 17 and the fluid supply conduit (as in Fig. 1). A push-rod (not shown) from a brake pedal bears in a recess 9a against a slidable block 9 which is retained in the cylinder by a spring clip 10. When the block 9 pushes the piston away from the stop 4a the pressure in the chamber 17 presses the seal 11 against the abutment 13, cutting off communication between the chamber and the supply conduit 4. When the pressure is released the spring 6 pushes back the piston and the seal moves off the abutment 13 so that the passage is reopened. Fig. 2 (not shown) illustrates a cylinder with two pistons controlling separate circuits for front and rear vehicle brakes.
Patent GB-1082959-A (GB)
Title: Improvements in apparatus for decorating work-pieces
Inventor: PEAKE FREDERICK
IPC: B28B11/00
Filed: 1964-12-04
Abstract: 1,082,959. Coating apparatus, LAWTON ENGINEERS Ltd. and JAMES SADLER & SONS Ltd. March 2, 1966 [Dec. 4, 1964], No. 49357/64. Heading B2L. In apparatus for decorating workpieces having a rotating work support 20, 20a and one or more applicators 15 mounted for movement into a position in which they apply bands of a liquid decorating medium to a workpiece carried by the work support, each applicator is connected to a container 11 for the liquid medium, and container being normally open to atmosphere and having a control valve arranged to shut off the atmospheric connection and open up a compressed air supply by which the container is pressurised and the liquid medium is fed to its associated applicator. The movement of the or each applicator is derived from a mechanical linkage which also, prior to this movement, serves to impart rotation to the work support. The same linkage may also serve to move the applicator(s) into position and may be pedal operated. The applicators may be in the form of wide flexible blades of plastics which wipe the liquid medium on to the article or in the form of fine jets.
Patent GB-1323320-A (GB)
Title: Method and apparatus for assembling a warp
IPC: D02H3/00
Filed: 1970-10-20
Abstract: 1323320 Winding section beams KONINKLIJKE NEDERLANDSE TEXTIEL-UNIE NV 20 Oct 1970 [22 Oct 1969] 49708/70 Heading D1M In a method of winding sectional warp beams after the first section 7a is wound the warp thread guide 4 moves to the right to avoid the section 7b without interruption a flexible leasing rod having been inserted in the last turn of section 7a. After the section 7a has been wound and leased the leasing rod 9 is pulled slightly to the left to prevent fouling of the warp during the winding of section 7b. Just before the last turn of section 7b the rod is pushed to the right to lease that section. A turned up portion 9a on the rod prevents premature removal thereof. The rod 9 is flexible so that it can move from inside the drum to be wound and two drive mechanisms are provided, one to move it to the right and a second one to move it slightly to the left. The leading end of the rod is slightly thicker than the remainder so that the major part of the rod is not tightly gripped by the wound warps. In a modification (Fig. 2) the warps can be shed by combs 14a..14f so that they can be leased in any sequence by a series of insertable leasing rods 13a. .13k.
Patent GB-1246834-A (GB)
Title: Process for the manufacture of stabilized polytetrafluoroethylene dispersions
IPC: C08F14/26
Filed: 1968-10-21
Abstract: 1,246,834. Aqueous P.T.F.E. dispersions. FARBWERKE HOECHST A.G. 21 Oct., 1968 [21 Oct., 1967], No. 49743/68. Heading C3P. A stabilized aqueous polytetrafluoroethylene dispersion is prepared by carrying out the polymerization of tetrafluoroethylene in an aqueous medium in the presence of a product containing a plurality of oxyalkylene groups in an amount within the range of from 2 to 60 p.p.m., calculated on the total weight of the reaction mixture. In the examples, tetrafluoro ethylene and trifluoro ethylene are polymerized in the presence of water, a dilute P.T.F.E. dispersion, perfluoro-octanoic acid, ammonia, white oil, oxyethylated nonylphenol, sodium bisulphite, ammonium persulphate, copper sulphate, a block copolymer of propylene oxide and ethylene oxide, ethoxylated isodecyl alcohol, oxyethylated stearic acid and oxyethylated coconut oil amine.
Patent GB-1137397-A (GB)
Title: Improvements in and relating to electro-plating devices
IPC: C25D17/14
Filed: 1965-11-23
Abstract: 1,137,397. Electro-plating apparatus. P. HIRSCH. Nov. 23, 1965 [Nov. 25, 1964; Dec. 9, 1964], No.49815/65. Heading C7B. In an electro-plating device comprising an absorbent liquid container 9 for the electrolyte and a carrier 32 containing a current supply unit conductively connected to the absorbent liquid container, the absorbent liquid container is mounted on a storage reservoir 14 for the electrolyte, which reservoir is mounted exchangeably on said carrier, the reservoir and the carrier having co-operating contact pieces e.g. 13, for electrical connection with each other and the reservoir containing conductors 12, 6 leading from the contact piece thereof to the absorbent liquid container and the carrier is provided with a voltage regulator. In the form shown in exploded view, the current supply unit comprises a transformer 19 to which current is supplied from the mains via lead 4, a rectifier 16, a switch 18 which allows adjustment of the output voltage and a control lamp 21. One pole of the resultant D. C. voltage is connected to the absorbent liquid container 9 via anode head 38, and leads 6, 12, the other pole being connected to the workpiece to be plated by lead 2. Electroplating is effected by contacting the workpiece with the absorbent electrolyte containing element 9, whilst current is flowing. Whilst not in use the absorbent element 9 and anode head 38 &c. are covered by cap 10. Alternatively the current supply may comprise dry batteries positioned within the carrier 32, or a battery, e. g. an accumulator, positioned outside the carrier and connected thereto via terminal 29. To alter the metal which is being deposited the container 32 is released from the reservoir 14, and attached to a second reservoir containing the required different electrolyte and provided with the attached parts 7, 38 and 9, &c. The absorbent element 9 may be formed of quartz fibre fabric, glass fibre fabric, quartz wool or glass wool. The anode head may be formed of lead or antimony for deposition of chromium, from chromium-nickel alloy for deposition of gold or from the metal to be deposited for deposition of copper, nickel, brass, cadmium, tin, zinc or silver.
Patent GB-1133313-A (GB)
Title: Production of styrenes and of oxirane compounds
Inventor: KOLLAR JOHN
IPC: C07C1/24
Filed: 1965-11-24
Abstract: 1,133,313. Coproduction of epoxides and styrenes. HALCON INTERNATIONAL Inc. 24 Nov., 1965 [30 Nov., 1964], No. 49907/65. Addition to 1,097,132. Heading C2C. [Also in Division C5] In a process for the co-production of an epoxide and a styrene, an alpha-aralkyl hydroperoxide, having at least one hydrogen atom attached to a carbon atom adjacent to the carbon atom of the hydroperoxy group, is reacted in the liquid phase with a C 2-30  olefinically unsaturated compound, which has a different carbon skeleton from that of the hydroperoxide, in the presence of a Ti, Ta, Se, Te, Nb, Cr, Zn, U or Re catalyst to produce an epoxide and an alpha-aralkyl alcohol corresponding to the hydroperoxide and said alcohol is separated and dehydrated to the corresponding alcohol. The aralkyl hydroperoxides may be obtained by oxidation of the appropriate aralkanes, e.g. cumene and ethylbenzene. Epoxidation may be effected at - 20‹ to 200‹ C. in the presence of an inert solvent using a catalyst which is soluble in the reaction medium. After epoxidation, the reaction mixture may be distilled to remove unreacted olefin and the residue hydrogenated to reduce unreacted hydroperoxide to alcohol and subsequently distilled to remove the epoxide product, the residue being dehydrated to produce a styrene (see Division C5). Examples relate to the preparation of propylene oxide and cyclohexene oxide.
Patent GB-1178832-A (GB)
Title: Machine for Mounting Patterns or Samples on Pattern Cards or Shade Cards
Inventor: HUBBARD WILLIAM
IPC: B65H37/04
Filed: 1965-11-25
Abstract: 1,178,832. Securing samples to cards. WETHERBY SHADE CARD CO. Ltd. 24 Feb., 1967 [25 Nov., 1965], No. 50054/65. Heading B8F. In a machine in which patterns or samples from magazines 29 in a predetermined arrangement are attached simultaneously to a sample card, the card is carried by a carriage F which the operator moves along horizontal guides 3 between stations in which the card receives a pattern of glue or other adhesive, and in which the patterns are attached. In the form illustrated the part of the carriage supporting the card can be pressed against springs 48 by a fixed ram 36 into engagement with a resiliently mounted grid supporting the magazines 29. The patterns are pushed upwardly against the glue patches on the card by rams 32 which act for a predetermined time after the grid has been depressed in response to a manual control. The glue is first applied to the card at station C by a platen 10 moved upwardly by a ram 15. A gluing trolley 4 is pushed by the operator until it abuts a member 45 on the trolley carrying the card so that the gluing trolley is located first at a station where it engages a gluing roller 8 and subsequently at the station C where the platen 10 is moved to receive glue from it. Alternatively, the gluing trolley can be moved by a ram either automatically or under manual control. The card is held on the trolley by catches 59 (Fig. 7) moved apart against springs 62, to release the card, when a frame 54 carrying the catches is forced downwardly by a manuallyoperated screw 51, so that a fixed surface 64 engages cam surfaces 63 on the catches.
Patent GB-1039550-A (GB)
Title: Improvements in and relating to fluid pressure amplifier relays
IPC: G01F1/38
Filed: 1963-12-18
Abstract: 1,039,550. Fluid-pressure servomotor systems. BAILEY METER CO. Dec. 18, 1963 [Dec. 18, 1962],No. 50085/63. Heading G3P. A pneumatic relay for use with a force balance type transmitter is arranged to be unaffected by changes in the pneumatic supply pressure admitted to a chamber 27a and passing by way of a restriction 32 to a chamber 19 and through a passage 117 to a nozzle (not shown) of the transmitter. The latter comprises a diaphragm subject to the pressure difference across an orifice plate in a pipe the flow in which is to be controlled and acting on a lever having an adjustable abutment with a second lever subject to the force exerted by a feedback bellows, connected with the output pressure from a chamber 16 of the relay, and carrying a baffle that coacts with the nozzle. The output pressure of the relay also passes to a diaphragm actuated valve controlling the flow in the pipe or to an exhibitor, and a selector device is provided for alternatively connecting the valve for manual control. The apparatus may be subject to variations of temperature, pressure, relative humidity or e.m.f. instead of fluid flow. A movable member 26 secured to diaphragms 21a, 22a, 23a, 24a actuates supply and exhaust valves 30, 29 respectively to vary the pressure in the output chamber 16 in accordance with variations of pressure in the chamber 19 occasioned by action of the baffle and nozzle. A chamber 17 with a vent 35 which determines the setpoint of the apparatus is fed from the supply chamber 27a through a restriction 33 equal in size to the restriction 32 so that any variation of supply pressure acts equally and oppositely on the assembly of diaphragms and member 26. A restriction 34 allows a continuous bleed into the chamber 16 so that under conditions of equilibrium the exhaust valve remains open to be ready for instant response. Integral action is provided by a restricted connection 36 between the chamber 16 and a chamber 20.
Patent GB-1076969-A (GB)
Title: A process for the production of water-soluble hydroxypropyl-methyl celluloses
IPC: C08B11/02
Filed: 1965-11-26
Abstract: Water-soluble hydroxypropyl-methyl cellulose is produced by treating soda cellulose having a weight ratio of air-dry cellulose to NaOH between 1:0.5 and 1:0.9 simultaneously with 0.02 to 0.15 part by weight of propylene oxide and at least 4 parts by weight of liquid methyl chloride per 1 part by weight of air-dry cellulose under pressure at temperatures from 40 DEG  to 100 DEG  C., and subsequently, after removal of the excess methyl chloride, the crude product is purified in a known manner, e.g. washed with water at about 85 DEG  to 95 DEG  C. to remove any sodium chloride and methanol formed, and centrifuged or filtered to remove excess water. The washed product may then be homogenized in an extrusion press from which it is extruded in the form of strands, dried and ground, e.g. in a hammer mill, to a grain size of 0.1 to 0.6 mm. The product may then be dried in a current of hot air to a water content of about 5 to 12%.  A small proportion of a wetting agent may be added to the purified product before the homogenizing step. "Air-dry" cellulose is defined as common cellulose having a water content of 4.5 to 6.5% by weight.
Patent GB-1530949-A (GB)
Title: Low lag luminescent phosphors
IPC: C09K11/77
Filed: 1976-12-03
Abstract: 1530949 Luminescent material E I DU POINT DE NEMOURS & CO 3 Dec 1976 [5 Dec 1975] 50570/76 Heading C4S A luminescent phosphor has the formula: wherein Q is Cl, Br or I, x is 0À0001 to 0À2 and y is 0  to 0À8, and the phosphor contains sufficient K or Rb to reduce lag. The phosphor is made by milling the relevant halides and firing, preferably in N 2 , to form a sintered phosphor. A number of specific phosphors are compared together with fluorohalides containing no K or Rb or containing other additives such as Li, Na, Ag, NH 4  or Cr. The phosphor may be mixed with a binder and coated on a support to give an X-ray screen. Various binders, supports, overcoatings, reflection layers and pigments are specified for the screen.
Patent GB-1396138-A (GB)
Title: Apparatus for delivering and stacking folded sheet material
IPC: B65H29/12
Filed: 1972-11-03
Abstract: 1396138 Conveying and stacking folded sheets &c. SPICERS (STATIONERY) Ltd 30 Oct 1973 [3 Nov 1972] 50676/72 Heading B8A Folded sheets, signatures or books without stiff covers are conveyed by a reciprocating transport table and stacked from below by a lifting member co-operating with a stack support. In order that the stack be stable, selected articles or groups of articles are reversed by a book reversing device above the transport table. In the figure, books 3 are conveyed by reciprocating table 1. Abutments 2 on the longitudinal edges of table 1 are depressed as a book moves forwards over them but stop the book from sliding back as the table moves backwords. Books to be reversed are lifted by arm 14 of bell crank lever 13, which is operated by solenoid 18 via linkage 19 and pressure bar 17. The book is gripped between endless belts 7 and 8 and delivered to the table 1 again with the spine 3<SP>1</SP> facing the opposite direction from before.