baber/WOPTO huggingface dataset:
Patent GB-951342-A (GB)
Title: Improvements in or relating to electrical amplifying apparatus employing junction transistors
Inventor: LAWRENCE JOHN EDWARD
IPC: H03F1/30
Filed: 1961-10-17
Abstract: 951,342. Transistor amplifying circuits. S. SMITH & SONS (ENGLAND) Ltd. Oct. 12, 1962 [Oct. 17, 1961], No. 37277/61. Heading H3T. In a two-stage transistor amplifier in which the base bias for the second, output; stage is derived from the output of the first stage, temperature compensation of the output stage is achieved by mounting the transistors of the two stages on a common head sink and by so arranging the parameters of the first stage that the changes in bias voltage at the output stage resulting from variations in temperature are such as to compensate the corresponding changes of collector current in the output stage. In the circuit shown, resistor 13 is so chosen that the bias variations applied to the base of output transistor 21 via emitter-follower 20 due to the temperature sensitivity of first-stage transistor 9 are such as to compensate changes in collector current in transistor 21 with temperature.
Patent GB-993662-A (GB)
Title: An improved fuel cell
IPC: H01M8/20
Filed: 1962-10-02
Abstract: 993,662. Fuel cells. ESSO RESEARCH & ENGINEERING CO. Oct. 2, 1962 [Dec. 19, 1961], No. 37386/62. Drawings to Specification. Heading H1B. A fuel cell utilizes as electrolyte an aqueous solution of sulphuric acid (3-50%) containing from 0À1-1À0% wt. of nitric acid. The cell may be divided into anolyte and catholyte compartments by an ion permeable partition. The gold impregnated carbon electrode may be waterproofed by P.T.F.E. and work opposite platinum or a platinum impregnated carbon electrode.
Patent GB-1278056-A (GB)
Title: Linear prism display device
IPC: G08B5/02
Filed: 1969-07-25
Abstract: 1278056 Accelerometers; pressure gauges OAK ELECTRO/NETICS CORP 25 July 1969 [25 July 1968 19 May 1969] 37440/69 Headings G1K and G1L [Also in Divisions G2-3 and H1] A prism is used to reflect light from indicia to an observer. In an accelerometer, Fig.7, the prism is spring-loaded and light from indicia 98-104 is reflected at a conical surface 86 towards an observation surface 90 according to the relative positions of prism and indicia. In a pressure sensing device, Fig. 10, the prism 106 is attached to a plunger 110 and when it is forced into the position illustrated in Fig.12 light from indicia 114 will be reflected to an observation face 116.
Patent GB-1467930-A (GB)
IPC: C09B67/20
Filed: 1975-09-12
Abstract: 1467930 Process for preparing pigment granules CIBA-GEIGY AG 12 Sept 1975 [13 Sept 1974 8 Nov 1974] 37537/75 Headings C4P and C4A Pigment granules and pigment preparations are obtained by subjecting a suspension of at least one finely dispersed organic pigment or pigment preparation in the presence of at least one water-insoluble granulating assistant chosen from natural, synthetic or semi-synthetic resins, esters of dicarboxylic acids, esters of arylmonocarboxylic acids, esters of arylsulphonic acids, esters of phosphoric or of phosphorous acid, phenyl-sulphonamides, or the alkaline earth metal salts of fatty acids containing 12 to 24 carbon atoms, but in the absence of wetting agents, in a two-phase system consisting of an aqueous phase and a second liquid phase which consists substantially of at least one organic solvent which is virtually insoluble in the aqueous phase and in which the granulating assistant is at least partially soluble, to a turbulent mixing until a granulate has formed, then isolating said granulate which consists substantially of pigment or pigment preparation, granulating assistant and organic solvent, and removing the solvent therefrom. An aqueous suspension of pigment may be used as starting material, preferred organic solvents being 1,1,1- trichloroethane, chlorobenzene, toluene and xylene. The resultant pigment preparation preferably contains the entire amount of organic solvent employed, excess solvent being removed by evaporation. 0À1 to 50 parts by weight of granulating assistant are used per 100 parts by weight of pigment, 2 to 22 parts by volume of organic solvent being used per 10 parts by weight pigment, the relationship of volume/weight being litres/kilogram.
Patent GB-1393571-A (GB)
Title: Method of cleaning niobium-containing alloy material to be plated
IPC: C23G1/14
Filed: 1972-08-15
Abstract: 1393571 Cleaning Nb-containing alloys FUJITSU Ltd 15 Aug 1972 [20 Aug 1971] 37980/72 Headings C7A and C7E An alloy consisting of Nb, CO,and Fe is cleaned by immersion in aqueous 1-20 wt. per cent NaOH at T # 70‹C. The alloy may be semi-hard magnetic material; e.g. 85 Co 12 Fe 3Nb wt. per cent which is subsequently to be plated with Ag, Au, or Rh; treatment is preferably at the boiling- point of the solution.
Patent GB-363133-A (GB)
Title: Improvements in or relating to spools for photographic films
IPC: G03B17/30
Filed: 1930-12-17
Abstract: 363,133. Roll-film spools. BAXENDEN, T. G., Lawrenny, Hempstead Road, Watford, and COLLYEAR, J. R., Leverno, Beechcroft Road, Bushey, both in Hertfordshire. Dec. 17, 1930, No. 38052. [Class 98 (i).] A spool for photographic roll films comprises a rolled up sheet metal blank 1 having the usual slots for threading the protective paper, the slot 3 being formed at the contiguous edges of the blank, the ends 4 of the spindle being reduced in diameter to receive the end discs 5. The ends of the spindle project through the discs beyond the outer faces thereof, to form stub spindles, and a slot 6 to receive a winding key is cut in one end. The end discs are preferably swaged in position.
Patent GB-944552-A (GB)
Title: Automatic control arrangement for take-up drives
IPC: B65H59/38
Filed: 1962-10-09
Abstract: 944,552. Automatic speed control. INDUSTRIE-WERKE KARLSRUHE A. G. Oct. 9, 1962 [Jan. 23, 1962], No. 38238/62. Heading G3R. A D.C. motor 8 drives a take-up bobbin 5 the surface of which is engaged by a motor-driven roller 4 so that, if there is any difference between the peripheral speeds of the bobbin and the roller, a shaft of the roller is deflected to control the speed of the motor 8 in a sense to remove such difference. The roller 4 comprises a synchronous motor having an external rotor, and its stator is supplied from polyphase alternator 3 for operation at a speed corresponding to the required take-up speed, the stator being mounted on the roller shaft. A centrally-biased arm 16 is fixed to the roller shaft and is adapted to move between contacts, 17, 18, whereby pulses of opposite polarity are fed selectively to an integrating field controller 24 for the motor 8. In another embodiment, a tachometer generator is coupled to the roller shaft.
Patent GB-975277-A (GB)
Title: Improvements relating to the dyeing of pile fabrics
Inventor: SHORT HOWARD DEMPSTER
IPC: B41F1/40
Filed: 1961-10-25
Abstract: 975,277. Printing apparatus. KOSSET CARPETS Ltd. Oct. 17, 1962 [Oct. 25, 1961] No. 38240/61. Heading B6C. In a pile fabric dyeing apparatus a printing forme 15 of the type shown in Fig. 2 of Specification 868,415 is filled from above by means of an arrangement 1, Fig. 1, supported by a bracket 2 from a table 3 vertically movable by an hydraulic ram 4. The forme 15 is supported on a horizontally reciprocating slide 16 driven by a motor 19 through a gearing and lead-screw 18, 17. The slide 16 is guided on the table 3 by guides 20, Fig. 2. The receptacles of the forme are filled whilst the forme is in position 15<SP>1</SP> through metering devices 25 in the form of piston valves. Sixty-four are shown in the drawings although about 500 are normally required per square yard of fabric. Each device 25, which is supported on a plate 26 carried by legs 27 extending upwardly from the bracket 2, has a flexible outlet pipe 28 the lower end of which is located by means of a perforated plate 29 above the particular forme receptacles it is to fill. Each receptacle may be supplied from two or more devices 25. Each device comprises a body 35, Fig. 3, closed except for a capillary tube 36 slidably mounted in an upper closure 37. The valve has a piston 39 biased upwardly by a spring 42 acting between the closure 37 and a tappet 44 mounted on a rod 45 turning between a pair of flanges 46 extending upwardly from a plate 47. The valve inlet 48 connects through a pipe 55 to a reservoir 56 and is closed when the piston 39 is in its uppermost position. The latter carries a spigot 49 which in the lowermost position of the piston cuts-off the supply of colouring agent to the outlet pipe 28. A reservoir 56 is supplied for each colouring agent. When the piston is in its lowest position, the colouring agent flows from its reservoir into the body 35, the displaced air passing through the tube 36, until the level of the agent reaches the bottom of the tube when the air above this level is trapped and no further appreciable entry of agent into the body 35 is then possible. By adjusting the position of the bottom of the tube the quantity of agent entering the body 35 may be varied. The metering devices 25 are discharged simultaneously through actuation of pneumatic cylinders 70 and 70<SP>1</SP> which rotate the rods 45 through rods 68, links 67 and crank arms 66. The cylinders 70 and 70<SP>1</SP> are operated independently of one another each being associated with the devices 25 filling half the forme so that with a forme one yard square carpets of intermediate widths such as 7¢ or 10¢ feet may be readily dyed by filling only half the forme when required. Specification 830,927 also is referred to.
Patent GB-1440371-A (GB)
Title: Electric motor controlling system
IPC: B66B1/24
Filed: 1973-08-13
Abstract: 1440371 Automatic control of lifts HITACHI Ltd 13 Aug 1973 [14 Aug 1972]  38297/73 Heading G3N [Also in Division H2]  A light system has high speed and low speed motor sections driving the lift and energizable to give respectively motoring and braking torques and controlled such that an improved response is obtained when approaching the rest position by providing both motoring and braking torques together. In the arrangement shown the lift is driven by induction motors HM and LM having lower and higher pole numbers respectively. The high speed motor is energized through primary voltage controller WR and the low speed motor is energized either directly from the mains supply (for inspection shown running) or, when braking is required, from controllable rectifier arrangement VR. A tacho-generator mounted on the motor shaft provides an actual speed signal for comparison with a speed signal produced by a pattern generator. The comparators are biased at B1 and B2 whereby the torque curves of the two motors are made to overlap, see Fig. 4, and thus the system has high gain and thereby a high speed of response even at the zero point. An additional feedback of braking current CD is made to the comparators CP1, CP2 controlling the high speed motor. Around the zero speed condition both motors are simultaneously energized to provide oppositely directed torques as can be seen from Fig. 4. The pattern generator provides an increasing speed signal for acceleration, decreasing speed signal for deceleration and includes a priority circuit which passes the lower valued signal as its output. A positional detection arrangement comprising fixed sensors 91 and moving probe P provides a step output when decelerating. The two motors may be provided as a single structure with separate motoring and braking windings.
Patent GB-1356661-A (GB)
Title: Mooring anchor
IPC: B63B21/44
Filed: 1971-08-17
Abstract: 1356661 Anchors ESSO PRODUCTION RESEARCH CO 17 Aug 1971 [21 Sept 1970] 38529/71 Heading B7S A mooring anchor comprises an elongated shank 11, a stock 19 connected transversely to the aft end of the shank and a fluke 25 having a smooth upper surface and having its aft end connected to the aft end of the shank such that its upper surface is below the upper surface of the shank. Slot 27 limits the minimum value of an acute angle between the fluke and the shank, and wedge 23 limits the maximum value of that angle. The fluke, shank and stock have flow surfaces free of obstructions to the passage of bottom soil over them and the anchor shown has two fluke tips.
Patent GB-1326387-A (GB)
Title: Lubricating composition for synthetic fibres
IPC: C07F9/141
Filed: 1970-08-12
Abstract: 1326387 Preparing tertiary phosphite esters TOHO CHEMICAL INDUSTRY CO Ltd 12 Aug 1970 [16 Aug 1969 25 Dec 1969] 38762/70 Heading C2P [Also in Division C5] The tris-phosphites of C 8 -C 22  alcohols or of polyoxyethylene condensates of such alcohols are prepared by heating 3 mols of the alcohol or condensate with 1 mol triphenyl phosphite in the presence of KOH under reduced pressure. The dialkyl-(polyoxyethylene alkyl ether) phosphites are prepared by reacting 2 mols of the appropriate alcohol and 1 mol of triphenyl phosphite in the presence of KOH under reduced pressure and then reacting the product with 1 mol of the polyoxyethylene alkyl ether. The monoalkyl-di(polyoxyethylene alkyl ether) phosphites are prepared by reacting 2 mols of the polyoxyethylene alkyl ether and 1 mol of triphenyl phosphite in the presence of KOH under reduced pressure, and then further reacting the product with 1 mol of the appropriate alcohol. Many examples of each of the three classes of phosphites are given.
Patent GB-1355323-A (GB)
Title: Compositions for the preparation of enteric coatings
IPC: A61K9/28
Filed: 1971-08-18
Abstract: 1355323 Enteric medicaments SHINETSU CHEMICAL CO 18 Aug 1971 [19 March 1971] 38817/71 Addition to 1300696 Heading A5B [Also in Division C3] The cellulose ester-ethers disclosed in the parent Specification 1,300,696 are, mixed with a plasticizer and optionally pigments and silicone oil, used as enteric coatings for tablets. The coating may be applied either by spraying as in Example 2 or by flow-coating as in Example 3. The coating is stable to artificial gastric fluid (pH 1.2) but is dissolved by the more alkaline artificial intestinal fluid (pH8.3).
Patent GB-1044469-A (GB)
Title: Power transistor
IPC: H01L29/00
Filed: 1963-10-03
Abstract: 1,044,469. Semi-conductor devices; component assemblies. INTERMETALL GESELLSCHAFT FUR METALLURGIE UND ELEKTRONIK. Oct. 3, 1963 [Oct. 4, 1962], No. 39024/63. Headings H1K and H1R. In a power transistor having a flat emitter electrode, partial areas of this electrode are connected to an emitter connection by means of resistors. As shown, Fig. 2, a power transistor comprises an emitter electrode 4, a base region 6, and a collector region 7. The emitter electrode 4 is comb-shaped and a resistive layer 5, comprising a mixture of a metal with a metal oxide, is evaporated on to it through a mask, and a metal emitter contact 3 is similarly evaporated on top of resistive layer 5. The base contact 9 is also comb-shaped and is interdigitated with the emitter contact. This emitter construction effectively comprises a large number of emitter electrodes individually connected by resistors to the emitter contact and this prevents localized thermal runaway of the transistor. In a second embodiment, Fig. 3 (not shown), a commercial silicon power transistor is modified by etching the emitter electrode to form a plurality of strips 41 to 44 which are connected to a common contact 3 by short lengths 51 to 54 of resistance wire. Alternatively, the plurality of emitter electrode strips can be formed by evaporating material on to the device and then alloying and making the resistive connections. In another embodiment, Fig. 4 (not shown), a planar transistor is provided with a coating 10 of silicon dioxide on which is deposited the emitter contact 31 which is connected to the partial emitter electrodes 41, 42, 43 by resistive strips 55, 56, 57 evaporated on to coating 10. A further embodiment, Fig. 5 (not shown), comprises a planar resistor with a plurality of partial emitter electrodes 41, 42, the whole surface being covered with a layer 101 of silicon dioxide in which pairs of small windows 12 are etched to expose each emitter electrode in two places. An emitter contact 31 is deposited on layer 101 passing between the two windows of each pair and resistive strips 56, 57 are then evaporated on to the device to join the emitter contact 31 to two points of each emitter electrode.
Patent GB-1338299-A (GB)
Title: Filter assembly and method of obtaining a filtered sample
IPC: B01D29/01
Filed: 1971-08-20
Abstract: 1338299 Filter for sampling process stream BECKMAN INSTRUMENTS INC 20 Aug 1971 [25 Sept 1970] 39112/71 Headings B1D and BIT  A process stream passes from inlet 46 to outlet 47 across a cylindrical filter chamber 24 creating a bifurcated flow pattern as in Fig. 5, which continuously washes clean the upstream surface of a flat filter element 34 extending parallel to the plane containing the inlet and outlet (Fig. 2, not shown), and a filtered sample is withdrawn from the other side of element 34 through passages 56, 58, 60. Element 34 has a porosity below 0.8 micron and is clamped between cap 16 and body 14 of the filter housing, the passages 56, 58, 60 enabling cap 16 to be removed without disconnecting any external tubing. The connecting bolts (22) are so arranged that cap 16 can be fitted in only one position on body 14 to ensure, that passages 58, 60 align. The filter may remove water droplets and solids from gases or liquid hydrocarbons or solids from water to provide clean samples for analysis.
Patent GB-1164886-A (GB)
Title: Improvements in or relating to Tables
IPC: A47B85/02
Filed: 1967-08-25
Abstract: 1,164,886. Tables. HETTICH & WALLS Ltd. 25 Aug., 1967, No. 39184/67. Heading A4H. A table top 2 can be displaced forwardly to overhang the front edge of the table stand 1 and then tilted, or the table top can be displaced rearwardly away from the front edge and then reversed. When the top is displaced forwardly flat journals 4 on the side members 1d of the stand 1 move in guides 3 on the table top and engage in slots in rotatable inserts 3a at the ends of the guides 3. At the same time pivots 6 on the sides of the table top slide to the open ends of horizontal slots 7 in the side members 1d of the frame. The top is then tilted about the axis of the rotatable inserts 3a, the pivots 6 moving through the open ends of the slots 7. The top is held in inclined position by a pivoted arm 8 engaging notches 10a in a further slot 10 in one of the side members 1d. In order to reverse the table top it is displaced rearwardly when in horizontal position until the flat journals 4 emerge from the open ends of the guides 3; the pivots 6 have now reached the closed ends of the slots 7. The top is then rotated about the pivots 6 and then slid forwardly until short guides 5 at the opposite end of the table to the guides 3 engage ball springs (13) on the inner surfaces of the side member 1d. The pivots 6 are covered by plastic cups which rotate on the pivots. The stand is made of metal tubes of rectangular section. The end of one tube (1b Fig. 8) is secured in a recess in another tube (1a) by a bolt (1h) screwed into a threaded insert (1g) in the end of the first tube. The inserted end is either beaded or tapered. A side part (Ii), (Fig. 10) may be secured by a member (17) to the table stand, the side part having a drawer (19), a tray (20), an adjustable and foldable support (21) for drawings and a cupboard. The drawer may carry a wedge shaped plate (22) (Figs. 13, 13a) adapted to move a latch (23) into one of the slots 7 to lock the table top in horizontal position. A tray (16) (Fig. 9) has a portion shaped to engage over the front or rear bars 1b 1c of the table stand. The lengths of the legs of the table can be adjusted by screws (27 Fig. 12) screwed into insets (26) engaged in the ends of the legs. Two or more tables can be connected together in a row (Fig. 11) by using the members (17) (Fig. 10) for attaching the side parts (Ii) and drawers 19 can be connected between the tables.
Patent GB-1008619-A (GB)
Title: A saw for cold metal
IPC: B23D45/00
Filed: 1964-09-25
Abstract: 1,008,619. Sawing. L. JAGERS. Sept. 25, 1964, No. 39217/64. Heading B5L. A saw for cold metal comprises a circular saw 16 carried by and driven through a gearbox 2 in a sawing table 1, the gearbox and the work-supporting wall 8 of the table being provided with interengaging relatively-sliding guideways 9, 9a, 10, 10a, a track 6 mounted rigidly on the table and parallel to the guideway on the table, roller means 5, 5a travelling on the track, and resilient means 7, 7a operating on the roller means and gear-box to urge the guideways into engagement with one another. The guideways 9, 9a on the wall 8 of the table are of V- and flat-shape and engaged by complementary guideways 10, 10a on the gear-box 2 which is connected by a belt drive 14 to a motor 13. Lugs 2<SP>1</SP>, 2<SP>1</SP>a are formed on the gearbox and pivotally carry levers 4, 4a which, intermediate their ends, carry rollers 5, 5a, and, at their outer ends, are connected by the resilient means, in the form of springs 7, 7a, to further lugs 211, 2<SP>11</SP>a on the gear-box. The springs cause the rollers 5, 5a to coact with the track 6 and press the guideways 9, 9a, 10, 10a into close engagement. The carriage has a nut 12<SP>1</SP> engaging a threaded spindle 12 which can be rotated at a relatively slow speed by a motor 17 to feed the carriage in the direction D or can be rotated at a relatively high speed either in the direction D or in the reverse direction to rapidly advance and withdraw the carriage by a motor 18. In another embodiment, the gear-box 102, Fig. 4, carrying the saw 116 is movable along a vertical guideway 109 by a hydraulic device 120, 121 to effect cutting of a workpiece 124 held between plates 108, 125 by a holder 123 on a table 122. The guideway 110 on the gear-box is resiliently urged against the guideway 109 by springs 107 acting between the gear-box and a carriage 104 having rollers 105 bearing against a vertical portion 101 of the machine.
Patent GB-1087244-A (GB)
Title: Magnetic type circuit breaker
Inventor: LAWSON MARTIN WILLIAM
IPC: H01H71/52
Filed: 1964-09-25
Abstract: 1,087,244. Automatic circuit breakers. TEXAS INSTRUMENTS Inc. Sept. 25, 1964, No. 39265/64. Heading H2B. A circuit-breaker 10 of the kind comprising a frame 60, fixed in the housing 11 and mounting the movable contact arm assembly 88 and electromagnetic assembly 72, with the operating member 44 coupled to the movable arm 90 by a linkage assembly 122 which, at least when contacts 91, 92 are closed, acts as a rigid body, is characterized by the linkage assembly 122 being pivotally coupled to the operating member 44 by a pin 124 which fixedly engages the frame 60 when contacts 91, 92 are closed, which fixed engagement is not broken by small movements or vibrations of the operating member 44 relative to the housing 11 other than the operating movement of member 44 out of its contactsclosed position. Coil 76 attracts an armaturetripper member 94 upon overload to release a latch 133 (see also Figs. 8, 9, not shown) and allow collapse of the linkage assembly 122 and opening of contacts 91, 92, under torsion spring 114 in conventional manner. The breaker is trip-free and is reclosed manually by lever 44. An auxiliary switch 164 may be operated upon opening of contacts 91, 92 (Figs. 10-12, not shown). Calibration is possible via adjustable spring 98 and stop 81 for armature 104 included in member 94. Lever 44 may be pivoted on the frame 60, and the pivot pin mounts the frame 60 in the housing 11 along with the pin 110 pivotally mounting the movable contact arm 90. As shown, the frame 60 is mounted in housing 11 by abutments 62, 64, on housing portions (12), 14 (Fig. 2, not shown), and tabs 66, while lever 44 is pivoted by pin 54 in a bushing 32 mounted in the cover 24 by which the breaker 10 is mountable in a panel (not shown). An indicating plate 38 has " ON " and " OFF " printed thereon.