baber/WOPTO huggingface dataset:
Patent GB-1043019-A (GB)
Title: Improvements in or relating to field effect transistors
Inventor: WESTBROOK RUSSELL DAVID
IPC: H01L27/095
Filed: 1964-10-14
Abstract: 1,043,019. Field effect transistors. UNION CARBIDE CORPORATION. Oct. 14, 1964, No. 41835/64. Heading H1K. [Also in Division H3] A rod-shaped monocrystalline field effect transistor comprises a semi-conductor whisker having at least three axially spaced ohmic contacts and a gate electrode between each pair of adjacent ohmic contacts. A 50 Á diamonocrystalline n-type Si-whisker 10 having a resistivity of 100 ohm/cm. and length 2000 Á, has ohmic contacts 20, 24 and 28 of Au wire doped with Sb of length 25 Á bonded to it by thermal compression. Gate contacts 22 and 26 are formed around the circumference of the whisker by conductive Ag paint or silver epoxy. The axial length of the circumferential electrodes are preferably 25 to 200 Á with gate 26 longer than gate 22 to ensure that the field limited current of gate 26 is less than the zero bias current of gate 22. If desired, a plurality of gates may be made between any two ohmic contacts. In operation as a low power voltage amplifier (as in Figure 2), portion 20 to 24 acts a field effect transistor whilst portion 24 to 28 acts as an integral field effect load resistor or dynamic current limiter. The gate potential in the resistor portion assumes a value near that of the leading edge of the gated portion. The whisker may also be made of Ge or SiC whilst the gate electrodes may be formed by diffusing Sb, Ga or Al. In Fig. 2, the whisker has a hexagonal cross-section with rectangular faces. The device may be used to make a free-running multivibrator (Fig. 4, not shown, see Division H3).
Patent GB-1492660-A (GB)
Title: Dentifrices
IPC: A61K8/31
Filed: 1975-10-13
Abstract: 1492660 Effervescent dentifrices COLGATE - PALMOLIVE CO 13 Oct 1975 41835/75 Heading A5B An effervescent dentifrice is substantially anhydrous and comprises: (I) as a dental vehicle an oil selected from mineral oils, vegetable oils and light liquid petrolatum and, optionally, a wax or a fatty alcohol having at least 12 carbon atoms per molecule or both; and (II) a solid portion comprising a member selected from carbonates, bicarbonates, oxidising agents and mixtures thereof, and an acidulating agent, or where the member consists of or includes an oxidising agent, an enzymatically active substance instead of or in addition to the oxidising agent.
Patent GB-872959-A (GB)
Title: New triepoxide compounds and a process for their preparation
Filed: 1958-12-30
Abstract: Condensation polymers may be obtained from triepoxides of the formula: <FORM:0872959/IV (a)/1> wherein R2 to R6 represent hydrogen atoms or lower alkyl groups containing 1-8 carbon atoms and the group (CnH2n-1O) represents an epoxyalkyl group where n is an integer in the range from 2-17.  Selective reaction of the epoxide group of the cyclohexyl ring can be induced while the other epoxide groups are unattacked, suitable catalysts being acid reagents and active hydrogen compounds such as phenols, alcohols and carboxylic acids. Soluble, fusible resins are obtainable in this way which may subsequently be thermoset, and are then of value for castings, surface coatings and laminates.ALSO:The invention comprises triepoxides of the general formula <FORM:0872959/IV (b)/1> wherein R2 to R6 represent hydrogen atoms or alkyl groups containing 1 to 8 carbon atoms and the group (CnH2n-1O) represents an epoxyalkyl group in which n represents an integer in the range from 2 to 17.  The novel compounds are prepared by the reaction of peracetic acid and a 3-cyclohexane-1,1-dimmethanol dialkenoate at a temperature in the range between -25 DEG C. and 150 DEG C.  The time of reaction is usually from one to ten hours, depending on the temperature.  The 3-cyclo-hexane-1, 1-dimethanol dialkanoates are prepared by esterification of a 3-cyclohexene-1,1-dimethanol with two equivalents of a mono-ethylenically unsaturated fatty acid containing from 3 to 18 carbon atoms.  The triepoxides are useful in the preparation of synthetic polymers.
Patent GB-1273489-A (GB)
Title: An improved fulling machine
Inventor: BERTOLDI ATTILIO
IPC: D06C17/02
Filed: 1970-09-02
Abstract: 1,273,489. Fulling-machines. A. BERTOLDI. 2 Sept., 1970 [5 Sept., 1969], No. 42039/70. Heading D1S. A fulling machine comprising a fulling channel 3 and means 1, 2 for feeding fabric webs into the channel 3, is characterised in that the channel 3 is divided into at least two zones by at least two independent wall members 6 which are pivoted on a common axis 7 and pressure means 8 is provided for operating upon each member 6. As shown, fabric webs in rope form are supplied by two movably-supported driven cylinders 1, 2 into the entry end of the channel 3 defined by fixed fingers 4. The bottom of the channel 3 is defined either by idle rollers 5 or a plate which are or is stationary or movable in the direction of the arrow A. A series of members 6, e.g. five, forms the top of the channel. The piston 10 of a doubleacting pneumatic cylinder 9 acts on each member 6 so that fabric ropes of a different lengths and/or type may be fulled simultaneously.
Patent GB-1186483-A (GB)
Title: Hatch Cover System
IPC: B63B19/18
Filed: 1968-09-04
Abstract: 1,186,483. Hatch covers. KVAERNER BRUG A.S. 4 Sept., 1968 [5 Sept., 1967], No. 42071/68. Heading B7S. [Also in Division E2] A hatch cover system is formed of pairs of cover sections 3, 4 in which each section 3 can be raised or lowered by jacks 10 and each section 4 is provided with wheels 6 so that section 4 can be placed beneath the raised section 3 for the pair of sections to be moved as a unit on the wheels of section 4.
Patent GB-1063678-A (GB)
Title: Building scaffolding
IPC: E04G1/14
Filed: 1965-10-05
Abstract: 1,063,678. Scaffolding. S. K. JESPERSEN. Oct. 5, 1965 [Oct. 15, 1964; Dec. 8, 1964], No. 42176/65. Heading E1S. In scaffolding constructed of inverted U frames 1, 2 and longitudinals 3, the horizontal 2 of each U frame and the longitudinals 3 are flanged sections preferably I sectioned. To the ends of the longitudinals 3 flat plates are welded which fit in the tubular legs 1 of the U frames and are slotted for a securing wedge 6.
Patent GB-1318403-A (GB)
Title: Universal rolling mill stand
IPC: B21B31/04
Filed: 1970-09-03
Abstract: 1318403 Universal rolling mills MOELLER & NEUMANN GmbH 3 Sept 1970 [18 Oct 1969] 42266/70 Heading B3M  A universal rolling mill stand comprises vertical and horizontal main rolls 14-17 and pairs of edging rolls 19-22 driven from a common drive 24 through speed responsive, clutches 47, 48. The edging rolls downstream of the mill stand for rolling in either direction are driven and the other edging rolls are withdrawn by rapid screwdowns 23. The clutches are of the unidirectional freewheel slipping type which allow freewheeling of the rolls when the speed of the rolled product exceeds a certain value and which slip below this speed. The motor drive 24 is connected to a common gear 40 engaged with spur gears 38, 39 through intermediate gears 36, 37. The edging rolls 19-22 are mounted in chocks 18 slidable in stand extensive 11a, 12a which may be cast with or bolted to the stand.
Patent GB-915059-A (GB)
Title: Improvements relating to pile yarn end grippers for spool axminster carpet looms
Inventor: HILL WILLIAM
IPC: D03D39/02
Filed: 1960-12-09
Abstract: 915,059. Yarn pile grippers; Axminster looms. HILL (KIDDERMINSTER) Ltd., WILLIAM. Dec. 9, 1960, No. 42386/60. Class 142 (2). A pile yarn gripper comprises a fixed arm 10 and a pivoted arm 11, the pivoted arm 11 having a serrated portion 114 co-operating with a channelled portion 103 of the fixed arm, to grip the yarn, and being urged thereto by a spring 12. A bank of grippers may be simultaneously operated as in Specification 779,250.
Patent GB-1243691-A (GB)
Title: Apparatus for joining films
IPC: G03D13/00
Filed: 1968-09-06
Abstract: 1,243,691. Film splicing apparatus. AGFAGEVAERT A.G. Sept.6, 1968 [Sept.29, 1967], No.42527/68. Heading G2C. Apparatus for splicing together end to end film supplied in cassettes prior to development, comprises a rotary magazine 4 into which a cassette is inserted with the leader protruding outside the magazine, means for winding the film from the cassette to a take-up reel, splicing means 9 between the magazine and reel for joining the leading end of the film from the cassette to the trailing end of a film already on the reel, and a fixed knife 18 cooperating with a cutting edge on the magazine to trim the leader from the film when the magazine is rotated from a cassette insertion position to a winding position. Magazine 4 may have a plurality of cassette receiving chambers 15 spaced peripherally, and is rotated intermittently on shaft 3 by motor 2 by amounts depending on the number of chambers. In leaving magazine 4 the film end trips a feeler 8 to start a timing circuit which stops the take-up drive when the trailing end of the film is at a second cutter which then trims that end. The film is then reversed to bring that trailing end into abutment with the trimmed leading end of the following film at splicer 9. Cassettes fall into chute 5 when the trailing ends are cut and are arrested by device 14 until the feeler 8 has been actuated by a full film length. If the film has broken the cassette is therefore retained in chute 5 for recovery.
Patent GB-1026244-A (GB)
Title: Fuel cells
IPC: H01M4/86
Filed: 1964-10-19
Abstract: 1,026,244. Fuel cells. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Oct. 19, 1964 [Oct. 18, 1963; May 26, 1964], No. 42626/64. Heading H1B. A fuel cell electrode having (known) straight non-capillary pores 3 has additional, smaller pores extruding from between adjacent pores as shown. Alternatively the smaller pores may be tortuous as in Fig. 2 (not shown) and may in all cases be formed adjacent the electrolyte side 2 or in the entire thickness of the electrode.
Patent GB-1119539-A (GB)
Title: Improvements relating to heat-reflecting filters
IPC: H01J9/20
Filed: 1965-10-13
Abstract: A layer of SnO2 is deposited on to a support, heated to 450-500 DEG C, by contacting the support with a solution of a tin compound, atomized by air and heated to about the same temperature as the support, until the I.R. reflectivity is about 80% at 7.75 m  m.  The support may be glass or a fused oxidic material and may be in the form of a plate or a tube.  The tin compound may be SnCl4, SnBr3Cl, SnBrCl3, SnCl2I2, SnI4 or an organic tin compound, and the solvent therefor may be an alcohol or an ester.  The solution, which may contain HF as a doping agent, may be heated in a furnace and atomized, and heated further by hot air.  A layer of SnO2, 100<\>rA thick, may first be formed on a glass support at less than 450 DEG C. and the layer according to the invention coated thereover. An apparatus, Fig. 1 (not shown), is described for coating plates wherein the atomized solution is allowed to drift up through an electrically heated furnace on to the heated plate.  A further apparatus, Fig. 3 (not shown), for coating the insides of tubes is described wherein the atomized solution is sprayed within the tube which is rotated inside an electric furnace.ALSO:An infra-red reflecting filter is prepared by depositing a layer of SnO2 onto a support, heated to 450-500 DEG C, by contacting the support with a solution of a tin compound, atomised by air and heated to about the same temperature as the support, until the I.R. reflectivity is about 80% at 7.75 m m. The support may be glass or a fused oxidic material and may be in the form of a plate or a tube.  The tin compound may be SnCl4, SnBr3Cl, SnBrCl3, SnCl2I2, SnI4 or an organic tin compound, and the solvent therefore may be an alcohol or an ester.  The solution, which may contain HF as a doping agent, may be heated in a furnace and atomised and heated further by hot air.  A layer of SnO2,100  thick may first be formed on a glass support at less than 450 DEG C and the layer according to the invention coated thereover. An apparatus, Fig. 1 (not shown) is described for coating plates wherein the atomised solution is allowed to drift up through an electrically heated furnace onto the heated plate.  A further apparatus, Fig. 3 (not shown) for coating the insides of tubes is described wherein the atomised solution is sprayed within the tube which is rotated inside an electric furnace.
Patent GB-923356-A (GB)
Title: Organic moderator and/or coolant of nuclear reactors as supplemental energy source
IPC: G21D5/16
Filed: 1961-12-05
Abstract: 923,356. Nuclear power plant. ESSO RESEARCH & ENGINEERING CO. Dec. 5, 1961 [Dec. 29, 1960], No. 43482/61. Class 39 (4). [Also in Group XIII] A mixture of organic materials, boiling within the range 325‹ F. to 1200‹ F., is passed into a nuclear reactor and heated to at least 400‹ F., and both the thermal energy and heat of combustion of the mixture are used to heat water. The mixture is a mixture of hydrocarbons and may be used as a moderator and/or coolant in a reactor. In the embodiment the mixture is a moderator-coolant and flows into the reactor 10 through charge line 11 and is discharged by line 12 into a heat exchanger 13, where it heats the condensate from the turbine 15. The condensate may be supplemented or substituted by an exterior source of steam or water through the line 16. Upon leaving the heat exchanger 13 the coolant flows through line 19 to the hydrocarbon-fired combination steam generator and superheater 20 where it is combusted. Hot water is passed through the line 21 to be flashed into steam and superheated in the superheater 20. Tank 27 is used to store the moderator-coolant, and the three-way valve 26 distributes the mixture to lines 11 or 24. Should the reactor shutdown line 24 passes the mixture to the superheater 20 to be burned. The three-way valve 25 may also recycle the mixture through lines 24 and 11. The three-way valve 29 by-passes excess moderator-coolant to the storage tank 31 until needed. Instead of the water being heated first by the thermal energy of the organic material, it may be heated firstly by the heat of combustion and then further heated by the thermal energy.
Patent GB-1027524-A (GB)
Title: Polymerisation of ethylene
IPC: C08F10/00
Filed: 1962-11-19
Abstract: Ethylene is polymerized at a pressure of at least 5000 p.s.i.g by continuously pumping ethylene through an elongated tubular reactor maintained at such reaction conditions as to produce a mixture of solid polyethylene and unreacted ethylene, additional ethylene being introduced, at a temperature below that prevailing in the reactor, into the reactor at a plurality of points intermediate its inlet and outlet ends so that the peak temperature of the reaction mixture is maintained below that at which an explosive reaction occurs.  The polymerization may be carried out at pressures of at least 15,000 p.s.i.g. and temperatures above 200 DEG  C. in the presence of less than 300 p.p.m. of oxygen as catalyst.  An elongated tubular reactor is described and illustrated by a drawing (not shown).
Patent GB-949066-A (GB)
Title: Improvements in or relating to water-soluble cores for use in casting
IPC: B22C1/00
Filed: 1960-12-19
Abstract: A water-soluble core consists of at least one alkali metal metasilicate and at least one alkali metal disilicate. Potassium, sodium and lithium meta- and di-silicates are referred to.  The core may also include alkaline earth borates, tungstates, plumbates and silicates, crushed glass, graphite and iron or aluminium oxide.
Patent GB-1119076-A (GB)
Title: Improvements in or relating to lathes
Inventor: MIKOLA ISTVAN
IPC: B23Q35/30
Filed: 1965-10-18
Abstract: 1,119,076. Copy-turning. SZERSZAMGEPIPARI MUVEK. 18 Oct., 1965, No. 44070/65. Heading B3T. A copying machine comprises a tracer 11 and a signal generator 16 co-operating with a switch 13 which reduces the speed of traverse. Before the hydraulic tracer 11 reaches a step in the pattern 12, the lever 16 tilts to operate the switch 13. The degree of lead #'s is chosen to produce a suitable radius between the surfaces to be machined.
Patent GB-1484638-A (GB)
Title: Dyeing keratin fibres with 2-n-substituted m-toluenediamines
IPC: C09B51/00
Filed: 1974-10-14
Abstract: 1484638 Oxidation dye compositions BRISTOL-MYERS CO 14 Oct 1974 [15 Oct 1973] 44386/74 Heading D1B Oxidation dye compositions comprise an oxidation hair dye vehicle contains a para component and a meta component having the formula: where R is alkyl optionally substituted by one or more hydroxy groups, phenylalkyl, cyanoalkyl, alkylsulphonyl, arylsulphonyl, or benzylsulphonyl, or their non-toxic salts. Preferred compounds are those in which R is alkyl optionally substituted by one to three hydroxy groups. Preferred para components are pphenylenediamine, p-toluenediamine sulphate, N, N-bis (2-hydroxyethyl) p-phenylenediamine hydrochloride and 4-amino-2-methyl-N-(2-hydroxyethyl)-aniline hydrochloride. The composition may also contain e.g. modifier dye intermediates, nitro dyes, soaps, surfactants, thickening agents, antioxidants, and organic solvents. The preferably aqueous compositions may be in the form of a solution, paste, cream or gel. Human hair is dyed by mixing the compositions with an oxidising agent and then applying to the hair.
Patent GB-445946-A (GB)
Abstract: 445,946. Ticket-printing apparatus. A.E.G. - FAHRKARTENDRUCKER GES., Hennigsdorf, Osthavelland, Germany. Oct. 25, 1934, No. 30672. Convention date, Oct. 25, 1933. [Class 100 (iv)] Type-wheel machines; aligning for impression.-In apparatus for printing tickets &c. compris. ing a revoluble drum carrying type-wheels, aligning - pawls cooperating with toothed wheels on the type -wheels are locked, during rotation of the drum, by means of a roller which is rotated stepby-step. In the apparatus shown in Figs. 1 and 3, type-wheels 3, mounted in a drum 1 are provided with toothed wheels 4 co-operating with aligning-pawls 5 connected to springs 6. A roller 14, revolubly mounted in the drum, is formed with projections 17 for co-operation with the pawls, and is provided with a toothed wheel 12 for co-operation with two teeth 10, 11 on a disc 9 secured to the stationary shaft 8 of the drum. Alternate teeth of the wheel 12 are reduced in breadth so as to clear a flange 13 which is formed on the disc 9 and is flush with the tops of the teeth 10, 11. Initially a normal tooth of the wheel 12 engages the teeth 10, 11, and when the drum is rotated, the roller 14 is stepped forwards, one of the projections 17 engages and locks the pawls, and during further rotation of the drum two adjacent normal teeth ride on the disc 13 and maintain the pawls in locked position. When the drum has almost completed a revolution, one of the narrow teeth on the wheel 12 engages the tooth 10, the roller is again stepped forwards, the pawls are unlocked, and another normal tooth engages the teeth 10, 11.
Patent GB-1284626-A (GB)
Title: Magnetic recording and re producing device
IPC: G11B23/04
Filed: 1970-09-18
Abstract: 1284626 Tape loading SONY CORP 18 Sept 1970 [19 Sept 1969] 44644/70 Heading G5R In a rotary magnetic heads transducing system, two interconnected but relatively movable guide plates 46, 48 may be rotated around the heads drum 22 in order to withdraw tape 16 from a cassette 14 and wrap it around the drum. In the preferred arrangement, the plate 48 rests on the plate 46 with pins 72 on the latter engaging slots 74 in the former so that when plate 46 is rotated the plates move together, after some initial movement of plate 46 only, and a tapered guide pin 68 and cylindrical guide pins 66, 78 on the plates draw the tape from the cassette and position it helically around the drum. The plates may be brought to either of the positions shown by a system (Fig. 4, not shown) in which the plate 46 is fixed to a notched ring (50), and a movable wheel (112) co-operates with a reversible drive-shaft (132) and the ring (50) to drive the ring whenever a spring-loaded roller (88) rests on the periphery of the ring, but not when in the notches (86, 134). A tapered pin 150 fixed to the deck locates the cassette on the deck and also guides the tape, the pin displacing a spring-loaded guide-pin (160) within the cassette.
Patent GB-1409051-A (GB)
Title: Hip joint prostheses
IPC: A61F2/36
Filed: 1971-09-24
Abstract: 1409051 Hip-joint prosthesis NATIONAL RESEARCH DEVELOPMENT CORP 20 Sept 1972 [24 Sept 1971] 44709/71 Heading A5R A hip-joint prosthesis comprises an acetabular device, Figure 1, and a femoral device, Figure 5. The acetabular device consists of a cup having an outer surface 3 of substantially symmetrical form relative to axis 5 and an inner surface 2 having a substantially symmetrical form relative to axis 4. The two axes are mutually angled and the inner surface 2 is eccentrically disposed relative to the outer surface 3 providing a greater wall thickness in the closed end region of the cup than in the rim region. The outer surface 3 of the cup has annular grooves 6 disposed in the surface in radial planes relative to the axis 5 and an annular ring 11, engaged in a groove around the cup outer surface, which is opaque to X- rays. The femoral device consists of a spherical head-shaped part 23 joined by a necked part 22 to the wider end of an elongate stem 21. The stem has a polygonal cross-section and is tapered to produce a reduction in its lateral dimensions in at least two intersecting longitudinal planes. The stem may be of rectangular cross section at its larger end and square at its smaller end with corners chamfered along a major portion of the stem to a progressively greater depth towards the neck portion thereof. In order to aid correct vertical positioning of the femoral device in the femur a series of marks 25 are provided. These marks correspond to a series of holes in a second femoral device which is used as a test piece. The test piece is inserted into the femur to the correct position and the depth of insertion noted by the holes. The actual device can then be cemented into the correct position immediately. A spacer device Fig 10 is fitted and retained on the stem 21 when cementing into the femur to ensure a layer of cement all round the stem and comprises a base 30 with at least three spring members 31 equally spaced extending from the base. The base is adapted to fit onto the stem 21 of the femoral device but to slide only part way up the stem. A tool for aiding in insertion of the devices is disclosed illustrated in Fig 11 (not shown).