baber/WOPTO huggingface dataset:
Patent GB-1405925-A (GB)
Title: Chamber for high-frequency heating of a conducting medium
IPC: H05B6/10
Filed: 1972-11-10
Abstract: 1405925 Plasma confinement COMMISSARIAT A L'ENERGIE ATOMIQUE 10 Nov 1972 [22 Nov 1971] 52033/72 Heading H5H [Also in Division G6] In an apparatus having a chamber for inductive heating of a conductive medium, e.g. a plasma or metallic vapour, particles of the conductive medium are prevented from bombarding the chamber walls or the energizing coil by a cage of a plurality of metallic rods. In the preferred embodiment a magnetic field is provided by the cage of metallic rods, along some of which an electric current is passed. Fig. 2 shows two arrangements of metallic rods. In the left hand view, rods 34 and 36 are energized to provide fields of the type 48, 46, a row of non- energized rods 50 being provided whilst the second embodiment (right hand view) has only two rows of rods, row 36 only being energized. The rods are shown having series connection (also Fig. 3, not shown) but parallel arrangements are disclosed. The rods may be disposed in a straight or helical pattern and gathered into groups of energized and non energized rods, Fig. 5 (not shown). The apparatus Fig. 1 may comprise straight or arcuate shells sections jointed together, alternate sections I-VII having the magnetic shield and the induction coil 32, and sections II-VIII having a corrugated passage 10 for confining the medium. Vacuum and electric connections are made in section I as shown in Fig. 4. Cooling fluid may be circulated in the rods. The shell 5 is of copper and may have a stainless steel lining 43. Various forms of rod, some having split sections to reduce eddy currents are disclosed, the dimension being related to the skin effect thickness. Copper and stainless steel and dielectric material may be used in the tube construction. The rods may be operated in a super conduction mode and arranged so as to minimize induction currents from the plasma energizing coil. The magnetic field produced by the cage can be multipolar.
Patent GB-1493365-A (GB)
Title: Push-pull amplifier
IPC: H03F3/20
Filed: 1974-12-03
Abstract: 1493365 Transistor amplifiers RCA CORPORATION 3 Dec 1974 [13 Dec 1973] 52204/74 Heading H3T A push-pull amplifier comprises first and second transistors 11, 12 respectively or equivalent compound transistors of the same conductivity type, with their conduction paths in series, a source 20, Fig. 1, of constant current I 20  comprising a third transistor 122, Fig. 3, of complementary type, and means 110 for forward biasing said third transistor, and a signal-responsive variable conduction device 23, whereby I 20  is apportioned substantially between transistors 11 and 12. Automatic biasing controlled by a voltage feedback connection 26, Fig. 1, renders the current portions to 11 and 12 approximately equal in the absence of an input signal. In a Class AB amplifier integrated circuit 100, Fig. 3, the variable conduction device is a transistor 23' supplied with base current from one collector of a dual collector transistor 127. An input differential amplifier 130 has an active load circuit comprising a current mirror amplifier 140 which additively combines the collector current signal variations of dual collector transistors 131, 132. One collector of each of 131, 132 is connected to its respective base to provide negative feedback for lowering input impedance, and to reduce the effect of collector-base capacitance to give wider bandwidth. A potentiometer 143 is for adjusting the no-signal condition to nullify the current through terminal 13. The output of 140 passes to common-collector transistors 141, 146 in cascade to control the proportion of the current from 127 which is applied as base current to transistor 23'. Transistor 122 is operating under substantially similar conditions to two similar transistors 119 and 121. The collector current of transistor 121 is used to apply forward-bias current to transistors 111-116. Diode-connected transistor 119 is part of a current mirror circuit which stabilizes the collector currents of 121 and 122 at a value related to a stable current I 0  generated by biasing network 110. A self-biased FET 126 initiates conduction in 119. A diode-connected transistor 125 provides current mirror action for transistor 127. To obtain linear amplification although transistors 11,12 are cut-off alternately for nearly half the operating range (Class AB) non-linear resistive networks 30', 40' are connected in parallel with the base-emitter junctions of 11 and 12 respectively. Each network comprises a diode-connected transistor 31', 41' in series with a resistor 32, 42. Equal temperature between related transistors 11, 31' and 12, 41' is maintained by thermal couplings (33, 43 respectively), Fig. 2 (not shown). A diode-connected transistor 151 permits transistor 12 to become saturated on extreme negative swings of the output signal. A phase-compensation capacitor 152 attenuates the gain of amplifier 100 at higher frequencies to ensure stability, even with direct feedback from output to input.
Patent GB-1335694-A (GB)
Title: Moulding method for reducing the water content of an article  produced from a water-extendible polyester
IPC: C08F283/01
Filed: 1970-11-04
Abstract: 1335694 Water-extended polyester resins DART INDUSTRIES Inc 4 Nov 1970 [13 Nov 1969 3 Aug 1970] 52522/70 Headings C3C and C3P A moulding method comprises the steps of: (1) blending and carefully mixing together a water-extendible unsaturated polyester resin, water, and a surface active agent having an HLB number rating of from 1 to 9 so that the resulting mixed emulsion has a particle size distribution wherein more than 50% of the number of the particles are of a size in the range of from 1À0 to 4À5 microns, a suitable catalyst being included in the blend for producing the emulsion or being added and blended with the resulting mixed emulsion; (2) introducing the mixed emulsion into a mould prior to the curing thereof; and (3) curing the emulsion contained within the mould and removing water from the moulded product. In the examples water-inoil emulsions are made by mixing unsaturated polyesters prepared from maleic acid, phthalic acid and propylene glycol, styrene, water, benzoyl peroxide, di-methyl-p-toluidine, sorbitan sesquioleate, cobalt octoate, dimethylaniline, methyl ethyl ketone peroxide/hydrogen peroxide blend, a blend of sorbitan trioleate and polyoxylene sorbitan trioleate, a detergent, methyl ethyl ketone peroxide, solution of hydroquinone in methoxy ethanol and perlite. These are placed in moulds, cured and water removed by heating.
Patent GB-1138346-A (GB)
Title: Drying means
Inventor: VOKES LEONARD GEORGE
IPC: B41F23/00
Filed: 1965-12-13
Abstract: 1,138,346. Drying apparatus. GEORGE VOKES (INFRA-RED) Ltd. 9 Dec., 1966 [13 Dec., 1965], No. 52751/65. Addition to 1,085,201. Heading F4G. The basket of parent Specification 1,085,201 which has a gas permeable floor or supporting surface of such configuration that an article of less length will be supported substantially at its edges, ends or rims is pivotally mounted in a cradle supported on only one end by a pair of parallel endless conveyer chains.
Patent GB-1534889-A (GB)
Title: Suspension file folders
IPC: B42F15/00
Filed: 1975-12-24
Abstract: 1534889 Suspension filing folders ACCO INTERNATIONAL Inc 24 Dec 1975 52872/75 Heading B6E A locking follower 22 suitable for suspension of a folder from one or more suspension rods (35, 36, Figs. 4, 5, not shown) comprises a body 23, a pair of flanges 24, Fig. 6, and spaced ribs 26 defining between them grooves in which are guided rails 19 of a suspension bar 21, the body 23 being further provided with an extension 27, Fig. 2, having a portion 33 extending at right angles thereto and a second portion 34 extending towards the body. The suspension bar 21 is attached to a loose cover 12 and receives a filing prong 16 which when folded over is retained by the follower. The follower is movable between three positions, viz. a suspension position, Fig. 2, a retracted position (Fig. 3), and a prong releasing position (not shown).
Patent GB-1278974-A (GB)
Title: Improvements in or relating to the liquefication of natural gas
Inventor: FORG WOLFGANG
IPC: F25J1/00
Filed: 1969-10-29
Abstract: 1278974 Liquefying gases LINDE AG 29 Oct 1969 [4 Nov 1968] 52889/69 Heading F4P In a process for liquefying natural gas circulating medium is compressed in a multi-stage compressor, cooled, partially condensed and separated between successive stages, the gas phase being passed to the next compression stage and the liquid phase passed in heat exchange with the gas to be liquefied, expanded and returned to the first compression stage. In a circuit having two compression stages the circulating medium is fed to a first compressor 2, partially liquefied in a cooler 3, and the liquid collected in a separator 4 passed through a heat exchanger 5, expanded through a valve 6, vaporized in the heat exchanger 5 and returned via a line 1 to the compressor 2. Gas from the separator 4 is mixed with gas to be liquefied in line 7, fed to a compressor 8, cooler. 9, and the partially liquefied gas passed into a separator 10. The liquid collected is sub-cooled in exchanger 5, expanded through valve 11 and recycled via line 1 as before; part of the sub-cooled liquid is expanded through a valve 13 into a line 27 to a gasometer. Gas from separator 10 is partly condensed in exchanger 5, and both resulting phases collected in separator 14 and passed through a heat exchanger 15. The sub-cooled liquid is expanded and recycled as before, and the gas is again partly condensed, collected in separator 16 and both phases passed through an exchanger 17. The sub-cooled liquid is recycled as before and the partially liquefied gas phase collected in a separator 18, both phases being cooled in heat exchanger 19. The liquid resulting in separator 20 is united with liquid from separator 18, passed through a heat exchanger 21, expanded and recycled. Vapour from separator 20 is liquefied in exchangers 21 and 23 and expanded through valve 24 into a storage tank 25; part of the flow is expanded through valve 26 into the line 27 which passes back through exchangers 23, 21, 19, 17, 15 and 5 to the gasometer. Vapour from tank 25 is fed via a line 28, a cold gas blower 29 into line 27. In another embodiment (Fig. 2, not shown) the gas to be liquefied is not added to the circulating medium, and is passed through the heat exchangers in a separate circuit.
Patent GB-1141179-A (GB)
Title: Crimping tool with retention means
IPC: H01R43/042
Filed: 1966-11-25
Abstract: 1,141,179. Crimping pliers. BURNDY CORP. 25 Nov., 1966 [29 Nov., 1965], No. 52936/66. Heading B4W. A crimping tool comprises a body member 1 having a fixed jaw 30, a movable jaw 12, a retention jaw 18 positioned between the jaws 30 and 12 and spring means adapted to urge the retention jaw against the fixed jaw to grip an article therebetween independently of movement of the movable jaw. Die grooves are provided in the jaws 18, 30. An operating handle 2 is coupled to the movable jaw 12 by a pivot 11 and to the body 1 by a pivoted link 3 so as to advance the jaw 12 towards the jaw 30 when the handle 2 is moved towards a handle mounted on the body 1. The jaw 2 is returned to open position by a tension spring 10. The handle 2 has a ratchet 8 which engages with a spring loaded pivoted pawl 6 on the body 1 to ensure that a full cycle operation of the jaws is performed. The retention jaw 18 is positioned by a pair of pistons 17 which are received in a pair of cylindrical bores 16 in the body 15 of the movable jaw 12, the jaw 18 being coupled to the jaw 12 by compression springs 19 positioned between the pistons 17 and the bottom of the bores 16 so that the jaws 12 and 18 move together during at least part of the compression cycle, force being transmitted directly from the jaw 12 to the jaw 18 after the springs 19 have been compressed to a given degree. The retention jaw 18 is releasably restrained against movement in response to the springs 19 by resilient latch means 23 interposed between the jaws 12 and 18, the latch means including interlocking detents 24, 25 on the jaws 12, 18 which snap into engagement when the movable jaw 12 is moved within a given distance of the retention jaw 18, a manually operable release button 26 being provided. In a modification (Fig. 7) the retention jaw 34 is hinged to the fixed jaw in the manner of a flap so that it may be manually tilted away from the fixed jaw, against the action of a torsion spring 38.
Patent GB-1181139-A (GB)
Title: A process for the preparation of 3,4,5-Trimethylphenol
Inventor: BRIGHT DAVID BRUCE
IPC: C07C37/00
Filed: 1967-11-23
Abstract: 1,181,139. Trimethyl phenols. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 23 Nov., 1967 [25 Nov., 1966 (2)], No. 53389/67. Heading C2C. A process for the preparation of 3,4,5-trimethyl phenol comprises heating 2-chloroisophorone or 4-chloroisophorone in the presence of an aqueous solution of a mineral acid of normality of from 1 to 15. 2,3,5-trimethylphenol is also obtained in minor amounts. Examples are furnished. 2-Chloroisophorone is prepared by reacting isophorone and chlorine. 4-Chloroisophorone is prepared by reacting 3,5,5 - trimethyl - 3 - cyclohexen - 1 - one with chlorine in the presence of sodium bicarbonate and carbon tetrachloride.
Patent GB-1210325-A (GB)
Title: Improvements in or relating to an appliance for binding cable assemblies
IPC: B65B13/34
Filed: 1968-11-13
Abstract: 1,210,325. Sealing. PAUL HELLERMANN G.m.b.H. 13 Nov., 1968 [14 Nov., 1967], No. 53753/68. Heading B6P. [Also in Divisions B3U and B3W] In a sealing tool for applying a seal or lock member 204 having a slot 204a for receiving strap ends 205, 206 and a base 204b transverse to the slot for receiving a pin 215, the arrangement is such that a cutting blade 210 carried by a lever 209 does not sever the projecting strap ends until a piston 208 carried by a lever 207 has pushed the pin to a position where the strap ends are secured in the lock member 204. The levers 207 and 209 have faces at 213 and 214, which are separated from each other in the rest position, and do not interact until lever 207 has been moved a given distance by a hand lever (not illustrated). In the lowermost position of lever 209, determined by a stop member 212, the cutting blade 210 presents a rear abutment for the lock member 204 in an aperture 203 in the body 201, 202 of the sealing tool.
Patent GB-1218718-A (GB)
Title: A spreader for adhesives
Inventor: ZIPEURE ALLAN ALBERT
IPC: B27G11/00
Filed: 1969-11-03
Abstract: 1,218,718. Adhesive spreaders. G. N. DRINKWATER Ltd. 3 Nov., 1969, No. 53885/69. Heading B2L. An adhesive spreader comprises a raised serrated edge 3 and a ridge 4 spaced therefrom and has also ribs 6 at the end of the edge ridge 4 which extend back beyonnd the ridge and with the edge form a plane which is slightly higher than the ridge. In use adhesive to be spread passes under the ridge into a trough 5 and then out under the serrated edge as the spreader is moved. In a modification the ribs 6 may be replaced by raised portions on the ends of the ridge. A handle 2 is provided.
Patent GB-1358466-A (GB)
Title: Surgical instrument for stitching tissue with suture wire
IPC: A61B17/064
Filed: 1972-11-22
Abstract: 1358466 Suturing instruments VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY I ISPYTATELNY INSTITUT MEDITSINSKOI TEKHNIKI 22 Nov 1972 54126/72 Heading A5R  A suturing instrument comprises a body 1 carrying a curved needle 2 an inner concave portion of which has a longitudinal groove 3, and a feed member 29 mounted on the body for feeding suture wire 4 along the groove, a face of the feed member facing the groove being adapted to cooperate with a suture wire leaving the groove to bend the wire to form a closed stitch. The push member 29 comprises a rod having a flat 34 for engagement with the butt end of the suture wire and a curved groove 35 for effecting final bending of the wire as it leaves groove 3. A magazine for suture wires is fixed to the body 1 and comprises a bush 7 having longitudinal slots to receive the suture wires and enclosed by a housing 9 supporting a spring-loaded ratchet pawl 13 the tip of which engages a slot 8. A tapering slot 36 is formed in the wall of housing 9 and when the rod 29 is moved to eject a suture wire, the slot interacts with the end of the rod to turn housing 9 and release pawl 13 from the slot 8, the pawl engaging the next slot 8 in bush 7 when the rod 29 emerges from housing 9. Continued downward movement of rod 29 effects complete ejection and bending of the suture wire via grooves 3 and 35. On withdrawal of rod 29 the housing 9 is returned to its initial position by a spring (23), the ratchet pawl effecting movement of bush 7 to bring the next wire-carrying slot 8 into operative position. Movement of rod 29 is limited by a stop carried by the handle and turning of housing 9 is limited by engagement of pin 25 carried by the casing with a pin 26 on the handle.
Patent GB-1248466-A (GB)
Title: Apparatus for separating solid particles from a gaseous medium
Inventor: BERZ MAX
IPC: B01D29/00
Filed: 1968-11-15
Abstract: 1,248,466. Separating solid particles from gases. M. BERZ and W. BERZ. 15 Nov., 1968 [22 Nov., 1967; 19 March, 1968], No. 54397/ 68. Heading BIT. Gas flows through a preliminary vortex separator chamber 15, a conduit 4 leading to a chamber 5 above chamber 15, separating- layer 6, and an outlet chamber 7 between chambers 5, 15. As described, valve means 8 allows periodic backflushing of (granular) bed 6 by scavenging gas (which may be heated) from an inlet 10, which entrains dust and deposits it in hopper 2 for removal by a worm 3. A rotary rake 11 (whose tines may be hook-shaped) smooths or agitates the bed during backflushing. The rake may be equipped with scavenging gas nozzles (72, Fig. 4, not shown) which travel through the bed. The tangential inlet to the vortex chamber may have a hinged plate (83, Fig. 5, not shown) for varying the inlet speed or direction, and the conduit may have means (96) for causing vortex flow such that gas entering the bed chamber exhibits vortex flow about a horizontal axis, striking the bed at an acute angle as in Specification No. 1,112,309. A plurality of such devices may be installed in parallel flow. Specification 1,248,467 is referred to. (For Figure see next column)
Patent GB-1177750-A (GB)
Title: Novel Gona-4,9,11-Trienes, Processes for their Preparation, and Pharmaceutical Compositions Incorporating them
IPC: C07J1/00
Filed: 1968-11-18
Abstract: 1,177,750. Gona-4,9,11-trienes. ROUSSELUCLAF. 18 Nov., 1968 [17 Nov., 1967], No. 54522/68. Addition to 1,048,231. Heading C2U. The invention comprises compounds of the formulµ wherein R<SP>3</SP> is C 1-3  alkyl, R<SP>4</SP> is H or C 1-18  carboxylic acyl and R<SP>5</SP> is H or alkyl. The compounds of Formula II are prepared by acid hydrolysis of compounds of Formula III, followed, when required by esterification of the resulting 17#-ol. Compounds of Formula III are prepared from the corresponding 17-ones by reaction with a metallic but-2-ynyl derivative. The preparation of the 17-ones is also described. The compounds of Formula II are stated to possess progestomimetic and hypophyso-inhibiting activities and may be made up with vehicles into pharmaceutical compositions suitable for oral, parenteral or rectal administration.
Patent GB-1375918-A (GB)
Title: Method for controlling unconsolidated sand in an oil well with permeable cement
IPC: C09K8/72
Filed: 1972-11-29
Abstract: 1375918 Acidising wells TEXACO DEVELOPMENT CORP 29 Nov 1972 [20 Dec 1971] 55076/72 Heading E1F The effect of non-oxidising mineral acids used to improve the permeability of cement barriers in oil wells is retarded by the inclusion of a vinyl-pyrrolidone polymer in the acid. Other inhibitors may be present.
Patent GB-1240131-A (GB)
Title: Equipment for the lengthwise stretching of strip articles, in particular of synthetic-resin sheet strips
IPC: D01D5/12
Filed: 1968-11-21
Abstract: 1,240,131. Stretching sheet strips. HERMANN BERSTORFF MASCHINENBAU G.m.b.H. 21 Nov., 1968 [22 Nov., 1967], No. 55196/68. Heading B5B. Strip articles, in particular synthetic resin sheet strips, are stretched using a plurality of rollers which in the direction of motion of the strip can be driven with the same or increasing peripheral speed, each roller being driven by an infinitely-variable speed motor, in particular a direct current motor. The motors are preferably arranged alternately at either end of the rollers. Coupling means may be interposed between each motor and its roller whereby each roller may be uncoupled so that it rotates freely and takes up the speed corresponding to that of the sheet. The stretching ratio can be changed progressively.
Patent GB-1116874-A (GB)
Title: Improvements in alloys
IPC: C22C19/07
Filed: 1965-12-30
Abstract: A cobalt base alloy comprises .C.0.1-0.6% .Y.0.01-1.0% .Cr.26.5-35% .W.6-9% .Ni.8.5-11.5% .B up to.0.05% .Fe up to.6% the balance (apart from impurities such as Mn up to 1%, P up to 0.04% and S up to 0.04%) being cobalt.
Patent GB-553208-A (GB)
IPC: F25B1/00
Abstract: 553,208. Pressure changers. AKT.-GES. BROWN, BOVERI & CIE. Nov. 8, 1941, No. 14428. Convention date, Dec. 7, 1940. [Class 8 (i)] [Also in Group XXVI] Compression and expansion of the working fluid are effected wholly or mainly by the inertia of the fluid, the stream of which is maintained by pumps which may be separate from the main rotor. Fig. 3 shows in flat development a wheel with axial bucket spaces 6 rotating between ported stator walls 2, 3. One gas stream flows from a space 5 and another from a space 11. The speed of the wheel is such that these streams just traverse the wheel in the periods that the buckets are open to them. The gas in the buckets as they come in from the left is discharged into the space 7. The gas entering the buckets from space 5 does not reach space 7 but is carried forward and is discharged into space 13 being displaced by the gas entering the buckets from space 11. This last gas is carried forward and discharged by displacement into space 7. When the forward end of a bucket is closed by the edge 8, the inertia of the gas flowing in the bucket causes the pressure to build up from the forward end of the bucket and more gas flows in until the bucket is completely closed by the edge 9. The pressure in the space 11 is higher than the pressure so reached in the bucket and when the rear end of the bucket is opened by the edge 10 more gas flows in and a wave of compression traverses the bucket. At the moment this wave reaches the forward end of the bucket, the bucket is opened forwardly by the edge 12 and the gas at full compression is discharged into space 13. When gas from the space 11 sufficient to fill the bucket has entered, the rear end of the bucket is closed at 14 and the inertia of the moving gas in the bucket carries the last of the gas received from space 5 into space 13. The bucket is then completely closed by the edge 15 and contains only gas from space 11 and at a reduced pressure. When the forward end of the bucket is opened by the edge 16 into the space 7 of lowest pressure, the gas expands into that space and a wave of rarefaction moves rearwardly through the bucket. At the moment the wave reaches the rear end of the bucket that end is opened by the edge 17 and gas from the space 5 begins to flow in and the cycle is completed. In order to permit the exact timing that is necessary, the portions of the stator carrying the edges 8 and 12 may be adjustable as shown in Fig. 5. The blades may be reversely inclined to reduce the leaving velocity. The blades may be curved and the spaces 5, 7 &c. may have guide blades to make use of the normal turbine and turbo-compressor action. In the arrangement shown in Fig. 9, the gas that has been compressed in the region 8, 9 is further compressed when the bucket is opened to a pressure space 21 : the forward end of the bucket is not opened at this time and the rear end is closed by the edge 24 on the arrival of the reflected pressure wave front.