baber/WOPTO huggingface dataset:
Patent GB-1509029-A (GB)
Title: Magnetic transducer heads
IPC: G11B5/39
Filed: 1975-10-31
Abstract: 1509029 Magnetoresistive transducer heads INTERNATIONAL BUSINESS MACHINES CORP 31 Oct 1975 [10 Feb 1975] 45268/75 Addition to 1458539 Heading G5R In a magnetic transducer head of the type disclosed in Specification 1,458,539 having a layer 11 of magnetoresistive material in a gap between two opposed magnetically permeable members 15, 16 with the layer 11 closer to one than the other of members 15, 16, the ratio of spacings between the centre of the thickness of layer 11 and members 15 and 16 is no more than 5 to 1. In a head in which current flows through a layer 12, e.g. of titanium, in contact with magnetoresistive layer 11 to provide a magnetic bias for layer 11, the ratio S 2 /S 1 , see Fig.1 or the ratio S 1 /S 2  may be 2 to 1 or 1À7 to 1, for example. The asymmetric position of layer 11 may be established by the thickness of shunt bias layer 12 with electrically insulating layers 13, 14 then having equal thickness to one another, or insulating layers 13, 14 of different thicknesses to one another may be used. If the ratio S 1 /S 2  or S 2 /S 1  is between 3 to 1 and 5 to 1, preferably 4 to 1, the excitation current through magnetoresistive layer 11 provides a sufficient bias field for layer 11 to allow the bias layer 12 to be omitted, Fig. 2 (not shown).
Patent GB-1283526-A (GB)
Title: Apparatus for cutting synthetic plastics material webs
Inventor: SHEARD PERCY
IPC: B26D1/04
Filed: 1968-09-25
Abstract: 1283526 Cutting apparatus; finishing edges P SHEARD and B SHEARD 26 Aug 1969 [25 Sept 1968] 45456/68 Headings B4B and B5K An apparatus for cutting a continuous band of synthetic plastics sheet material comprises a cutting means 8 having at least one disc cutter 58 mounted on a carriage 52 and provided with heating means 66, 68 means for feeding the material past the cutting means, sensor means for detecting by a signal when the sheet material is in a predetermined position suitable for cutting and means for stopping the feed of the material and severing it transversely thereof. The material is fed from a supply roll 10 by means of a pair of nip rollers 34, 36 to the cutting means 18, the cut material then being fed, by a second pair of nip rollers 40, 42, on to a conveyer 19. The rollers 34, 40 are pressed by fluid-pressure actuated cylinders 38, 44 into contact with their respective rollers 36, 42, the latter rollers being driven and geared together so that the rollers 40, 42 rotate at a faster speed than the rollers 34, 36. The material which is maintained under tension by rollers 28, 30 mounted on pivoted arms 26, is in the form of a woven plastics doubled over and joined together at spaced transverse strip defined by interconnecting weaving. The cutting means 18 comprises a pair of disc cutters 58. each mounted on a respective bracket 62, Fig. 3, which is pivotally connected at 56 to a motor driven carriage 52 adapted to run on a slideway on a frame 46, Fig. 1. The cutting discs are fitted with electric elements supplied with current via brushes 66 and slip rings 68; the discs may co-operate with a removable steel plate 50, Fig. 1, or with backing rollers having replaceable covers. The pivoted brackets 42 are loaded downwardly by springs 74 so that they may yield in the event of the cutter meeting an obstruction. In operation, the material is fed past an ultrasonic signal generating head 22 which is adapted to first slow down the material and then stop the feed so that the cutters are then moved transversely to cut through the centre of a spaced interconnecting strip, the material being simultaneously heat sealed.
Patent GB-1482655-A (GB)
Title: Collector for the recovery of rain water or waste or polluted waters
IPC: E04D13/064
Filed: 1974-10-21
Abstract: 1482655 Guttering FORNELLS SA 21 Oct 1974 [19 Nov 1973] 45484/74 Headings E1B and E1G A gutter or gulley for collecting rain water from a roof or rain or polluted waters at ground level comprises a number of channel section plastics members 1 arranged end to end and adapted at their upper edges 4 to snap engage with mounting strips 6 and secured to the roof or facade or embedded in concrete on the ground. The mounting strip 6 allows angles of 45‹-90‹ between the upper portion 3 of the channel sections and the adjacent structure and the mounting strip 7 angles of 0-45‹. When used as ground level the gutter is covered by a grating. Adjacent sections are interconnected by engaging seals in grooves in H-section junction elements or by engaging seals in grooves in an external strap which is clamped to an internal strap by bolts.
Patent GB-1010928-A (GB)
Title: Hatch covers for opening and closing open holds and containers, especially cargo hatch covers
IPC: B63B19/203
Filed: 1963-11-18
Abstract: 1,010,928. Door operating appliances. J. T. SILANDER. Nov. 18, 1963 [March 18, 1963], No. 45504/63. Heading E2M. [Also in Division B7] A hatch covering including a leaf (in Fig. 1, two leaves 30), mounted on a pivot 10 for rotation from a closed position overlying a hatch to an open position clear of the hatch, the leaf comprising at least two cover sections 1, 1a, coupled to one another (by hinges 6) rotatably about an axis parallel to the pivot of the leaf, has one or more springs 15 so coupled to the pivot so as to tend to bias the leaf to its closed position, and one or more counterweights 12 so coupled to the pivot as to tend to bias the leaf to its open position, the operative moment of the leaf about the pivot being counterbalanced by the moment of the counterweight(s) about the pivot when the leaf approaches its closed position, and the difference between the said moments being eliminated by the action of the spring(s) over a range of positions of the leaf intermediate its open and closed position. The covers can be lifted by handles 7.
Patent GB-1526198-A (GB)
Title: Bolt mechanism
IPC: E05C1/06
Filed: 1975-10-29
Abstract: 1526198 Bolt mechanism PESCA ENG Ltd 29 Oct 1975 [22 Oct 1974] 45740/74 Heading E2A A bolt mechanism, Fig. 1, comprises a body 10, a bolt 13 slidable therein between an extended position as shown and a retracted position and a manually operated handle 20 to move the bolt, the handle being resiliently deformable so that it biasses the bolt to its extended position and is manually deformable to move it to its retracted position. As shown, bolt 13 is slidable in recess 12 of body 10 and is retained and guided therein by projections (15, Fig. 2 not shown) engaging flanges (14) on the bolt. It is retained in retracted or extended position by spring detent member 16/17 engaging notches 18, 19 in the bolt. Handle 20 is pivoted at 21 to bolt 13 by pin 22 and at its other end 23 to body 10 by end 23 passing through slot 24. Handle 20 is pulled outwardly to withdraw the bolt where it is retained by means 17/19 and then pressed inwardly to extend the bolt. In modifications (not shown), (i) pivoting at 21 may be the same as at 23, both ends being detachable (ii) handle 20 presents an upwardly concave surface to resist a retracting force on bolt 13 and (iii) handle 20 is attached to the convex surface of a rigid member which prevents deformation of handle 20 beyond its elastic limit.
Patent GB-1203006-A (GB)
Title: Fermentation process and the production of citric acid
IPC: C12P7/48
Filed: 1968-09-26
Abstract: 1,203,006. Citric acid. CHAS. PFIZER & CO. Inc. 26 Sept., 1968 [12 June, 1968], No. 45856/68. Heading C2C. Citric acid is prepared by fermentation of a nutrient medium comprising at least 3% by weight n-alkane or 1-alkene hydrocarbon (9- 19 C) mixed with an aqueous phase containing a source of assimilable nitrogen and minerals by aerobic propagation of a citric and producing member of Genus Candida. The pH of the medium is maintained above 4 and the citric acid produced separated if necessary as the salt. n-Hexadecane is preferred as the hydrocarbon but others are used in the examples. Examples describe the use of Candida lipolytica, ATCC 8661, using many hydrocarbons.
Patent GB-1359637-A (GB)
Title: Apparatus for manufacturing heat exchangers
IPC: B21D53/04
Filed: 1970-09-25
Abstract: 1359637 Making heat exchangers ASSOCIATED ENG Ltd 24 Sept 1971 [25 Sept 1970] 45899/70 Heading B3A An apparatus for assembling a heat-exchanger composed of a corrugated metal foil strip 10 bonded to a pair of metal sheets 14, 15 by a heat-curing adhesive which may be coated on the sheets before the strip is positioned between them comprises a pair of clamping bars 32, Fig. 3, for the foil strip and the sheets, a pair of pressing rams 23 to press the assembly together and heaters to cure the adhesive. The strip is held between the T-section bars 32, Fig. 3, and the sheets are held by grooves 34 on the bars. The rams 23 have a pair of spigots 25 which engage in holes 26 in the sheets. A pair of supports (37), Fig. 2 (not shown), hold a pair of tubes 16 in alignment with the holes 26 for bonding to the sheets 14, 15 by the adhesive. The platens 23 are moved towards each other simultaneously by a pneumatic ram 27 operating through linkages 28-31. The rams 22 for the platens 23 each have a ramp surface (38), Fig. 4 (not shown), which pivots a lever (40) to retract the T-bars 32 as the rams advance. The rams 22 have electric heaters in a cavity 24 to cure the adhesive. The assembled heatexchanger is supported by the T bars 32 as the rams retract and is cooled by a fluid to set the adhesive.
Patent GB-930929-A (GB)
Title: Improvements relating to regenerated cellulose fibres dyed in the mass
IPC: D01F2/10
Filed: 1961-12-22
Abstract: Improved dyeing qualities are obtained by adding to viscose spinning masses 0.1 to 1.0% of compounds:-  <FORM:0930929/IV(a)/1> <FORM:0930929/IV(a)/2> where X and Y are oxygen or sulphur: Z is oxygen, sulphur or NR3:R2 and R3 are hydrogen, alkyl or hydroxyalkyl of at most 4 carbon atoms which hydroxyalkyl group can also contain ether or thioether atoms in which the bridging alkylene group contains at most 4 carbon atoms: the alkylene groups have 2-4 carbon atoms: R1 is a hydroxyalkyl group as in R2 and R3: n is a whole number from 6 to 12 m and q are 1 or 2 and p is 1 to 3.
Patent GB-1357275-A (GB)
Title: Grab
IPC: B66C1/62
Filed: 1972-10-06
Abstract: 1357275 Grab buckets NEMAG NV 6 Oct 1972 [7 Oct 1971] 46217/72 Heading B8H A grab comprises grab buckets 1, 2 pivotally connected respectively at 11, 12 to link arms 3, 4 which are pivotally interconnected at 8 for movement towards and away from each other by means of a control cable 9 which is fixed to the link arm 4 at 10 and passes about pulleys 5, 6, 7 such that when it is desired to move the grab buckets 1, 2 apart the cable 9 is paid out, tilting of the buckets 1, 2 being achieved during their movement apart by means of cables 15, 16 which are interconnected at a point 17, the tilting of the bucket 1 being restricted by means of a cable 20 connected thereto and to link arm 4 at a point 22 while restriction of the tilting of the bucket 2 is similarly achieved by means of a cable 21 which is connected at 23 to the link arm 3.-
Patent GB-989798-A (GB)
Title: Production of sorbic acid
Inventor: BRANCH SIDNEY JOHN
IPC: C07C51/09
Filed: 1962-12-12
Abstract: Sorbic acid is prepared by reacting ketene with crotonaldehyde in presence of a catalyst and heating the resulting polyester with a mineral acid in an aromatic hydrocarbon medium to form sorbic acid which is recovered from the product.  Catalysts may be barium, calcium, mercury, nickel, cobalt and copper salts of aliphatic carboxylic acids such as acetic, propionic and sorbic acids, and zinc resinate is preferred.  The intermediate polyester may be used as the crude reaction product or separated from the catalyst and excess reactant.  The aromatic hydrocarbon medium may be, benzene, toluene, a xylene, ethyl benzene, higher methyl benzene, a polyethyl benzene or mixtures thereof, and the preferred mineral acids are sulphuric or orthophosphoric acids. The heating stage may be from 50 DEG  to 200 DEG  C., batchwise or continuous, and the sorbic acid is crystallized from the aromatic hydrocarbon medium.
Patent GB-1113710-A (GB)
Title: Method and apparatus for making toothed lock washers
IPC: B21D53/20
Filed: 1966-10-20
Abstract: 1,113,710. Making lock washers; twisting; stamping. TRIANGLE TOOL CO. 20 Oct., 1966 [20 Oct., 1965], No. 47091/66. Headings B3A, B3E and B3Q. Lock washers having an annular body portion 76 and radially extending teeth 78 twisted relative to the body portion are formed by severing a blank of corresponding shape to the washer from a sheet of material 20, retaining the blank in the sheet by frictional engagement only, twisting the teeth relative to the body while the blank is retained in the sheet and removing the formed washer from the sheet. The sheet 20 is advanced intermittently between a series of upper tools 50, 52, 54, 56, 58 and co-operating lower tools 60, 62, 64, 66 mounted on upper and lower platens 32, 34 respectively. The strip is first pierced by a punch 50 to form the central aperture 74 of the washer and then blanked by the tools 52, 62 which have co-operating grooves 82 and ribs 80 to form the teeth 78. The blanking tools 52, 62 completely sever the blank from the strip but at the next station co-operating anvils 54, 64 push the blank back into the strip where it is held by frictional engagement. The strip is indexed to the twisting station where the tools 56, 66 with shaped co-operating faces 84, 86 twist the teeth of the blank. The faces 84, 86 of the tools 56, 66 twist the adjacent edges of the sheet material to preserve the sharp edges (18), Figs. 10, 11 (not shown), of the washer. The formed washers are ejected from the strip by a pushrod 58. The platens 30, 34 preferably have three series of tools which form washers from the strip 20. The strip 20 is preferably stamped at its outer edges AA, BB and the washers completely formed before the strip is stamped in the central line CC. If desired, any odd number of series of tools could be used providing the strip is stamped at its outer edges and the washers completely formed before the strip is stamped along the other lines. If the blanking tools 52, 62 fail to completely sever the blank from the sheet around its entire periphery the severance will be completed when the blank is pushed into the sheet by the anvils 54, 64.
Patent GB-1121007-A (GB)
Title: Improvements in and relating to curtain pleating tape
IPC: H04Q11/04
Filed: 1966-10-25
Abstract: Thermoplastic weft is woven into a curtain heading tape for a p short distance at intervals corresponding to the pleats; heat is applied to fuse the weft, thereby forming stiff zones to support the pleats.
Patent GB-1079147-A (GB)
Title: Process for hydrodealkylation of an alkyl hydroxy aromatic compound
Inventor: OFFUTT WILLIAM CALVIN
IPC: C07C37/50
Filed: 1965-11-10
Abstract: An alkyl hydroxy aromatic compound is converted to a product which includes the corresponding hydroxy aromatic compound by reacting said alkyl hydroxy compound in the presence of an alkyl aromatic compound corresponding to said alkyl hydroxy aromatic compound with at least about one mol of hydrogen per mol of said alkyl hydroxy aromatic compound at a temperature of 482 DEG  to 871 DEG  C. The conversion of para-cresol to phenol in the presence of toluene is described.
Patent GB-1475339-A (GB)
Title: Radiotelephone station
IPC: H04W48/16
Filed: 1974-11-05
Abstract: 1475339 Automatic exchange systems THOMSON-CSF 5 Nov 1974 47882/74 Heading H4K A radio telephone station, including a telephone handset with a receiver and microphone has an additional audio monitoring device distinct from the handset receiver for producing a tone when a traffic channel is free. The radio system is of the type wherein a number of radio frequency channels are available for use by a number of mobile stations and a separate service channel is used for channel allocation from a central fixed station. The invention resides on the provision of a monitoring loud-speaker 14 which is only enabled when the handset 16 is on-hook and which, in addition to supplying ringing tone, is used to enable the mobile subscriber to initiate a call and monitor the progress of the call up to the point where the called station goes offhook, without his having to lift the handset 16. Indeed if the handset 16 is lifted before the called subscriber replies the call set up procedure is terminated. To initiate a call the mobile subscriber depresses a call button which operates contact A to set a bi-stable 34. A calling tone is then transmitted on the service channel by transceiver 40. The control station responds by sending a binary word indicative of a free channel or the service channel to cause the receiver 10 and transmitter 23 to automatically time to the allocated channel and to cause a transcoder 41 to supply the identity of the calling mobile to the transmitter 23 for transmission over the allocated channel. To guard against the possibility of two simultaneous requests for service. The control station transmits the identity back to the mobile or the allocated channel and if the received identity agrees with that of the mobile, a proceed to send tone is supplied to the loudspeaker 14. The mobile subscriber then signals the identity of the called subscriber using a keyboard 30 (Fig. 2, not shown) wherein each digit is represented by a single tone. The frequency generator comprises an audio frequency oscillator adapted to operate on eleven different frequencies, one of which corresponds to the calling tone. The central station calls the required station by transmitting on the service channel the station's identity followed by the identity of the frequency channel to be used. A ringing signal generator 32 is then enabled to supply a ringing tone to the loud-speaker 14 in the called station. A mobile subscriber can lock his unit against unauthorized use by use of a key which causes contact C to be opened.
Patent GB-1294719-A (GB)
Title: Improvements in dynamoelectric machines having liquid cooled collector rings
IPC: H01R39/08
Filed: 1970-10-08
Abstract: 1294719 Cooling slip rings GENERAL ELECTRIC CO 8 Oct 1970 [21 Nov 1969] 47951/70 Heading H2A A dynarnoelectric machine, e.g. turbinegenerator, has disposed on, and electrically connected to connection bars 4, 5 in, a shaft portion 1, collector rings 2, each comprising at least one axially extending overhanging portion 2b whose outer surface 2d is in rubbing contact with brushes 8 and to which is attached a radially inwardly extending rotating ring 9 forming a liquid dam; a stationary ring 11, and a larger diameter stationary ring 12, respectively convey and collect liquid to and from the interior of the overhanging portion 2b. This difference in diameters provides a self-pumping action on the cooling liquid which is supplied to a rotating liquid chamber 30 via a manifold 17, axial passages 15 and inlets 13 in a stationary sleeve 10, and exits via outlets 14, sleeve pasages 16 and a manifold 18. The two rings 11, 12 each comprise two plates spaced by segments 11c, 12c spaced and oppositely curved to define spiral passages 22, 23. A similar ring 2 is disposed on the other side of the manifold assembly 3, and in a modification, Fig. 4, the hub (31a) is centrally of the collector ring (31). The brush surface 2d is helically grooved at 2c.
Patent GB-1444356-A (GB)
Title: Containers
IPC: B65D21/06
Filed: 1972-10-19
Abstract: 1444356 Stackable and nestable containers GPG HOLDINGS Ltd 16 Oct 1973 [19 Oct 1972] 48192/72 Heading B8P A container having support bars 6, 6a movable from one position to another to enable the containers to be both nested and stacked has the cranked ends of the bars mounted in channels or rebates 9, 9a, 10, 10a. When in the stacking position, the bars 6 have their supporting portions raised above their pivotal axis. The bars lie flush along the tops of the end walls 4, 5 when the containers are nested ensuring that the ends of the bars to not extend beyond the periphery of the container. Notches 11 locate the bars when in their stacking position. The ends 8<SP>1</SP> of the bars may be directed either inwardly or outwardly of the channels.
Patent GB-1122604-A (GB)
Title: New azines, their preparation and use
IPC: C07D277/50
Filed: 1966-10-28
Abstract: Novel compounds of formula 1 <FORM:1122604/C2/1> wherein R1 is hydrogen, an alkyl group having at most 6 carbon atoms, an alkenyl group having 3-6 carbon atoms, a cycloalkyl or cycloalkyl-alkyl group having at most 8 carbon atoms, a cycloalkenyl group having 4-8 carbon atoms, or the propargyl radical, R2 is an alkenyl group having 3-6 carbon atoms, a cyclopropyl group, a cycloalkenyl group having 4-8 carbon atoms, or the propargyl radical, and R3 and R4 each represent hydrogen or a C1- 4 alkyl radical, and, when R1 is hydrogen, salts thereof, are prepared (1) by heating, to effect ring closure, a compound of formula <FORM:1122604/C2/2> or a functional derivative with regard to one or both carboxyl functions, or a tautomeric form thereof, (2) when R3 is the same as R4, by reacting at a raised temperature a 2,5-dithiobiurea of formula III R1-NH-CS-NH-NH-CS-NH-R2 or a dibasic salt of a tautomeric form thereof, with at least double the molar amount of a reactive ester, with regard to the hydroxyl function, of an acid of formula R3-CH(OH)-COOH, or a functional derivative thereof with regard to the carboxyl function, (3) by heating a thiosemicarbazone of formula V or VI <FORM:1122604/C2/3> <FORM:1122604/C2/4> or a salt of a tautomeric form thereof, with at least the equimolar amount of a derivative of the hydroxy-alkanoic acid shown above, (4) when R1 is the same as R2, and R3 is the same as R4, by reacting a suitable thiazolidinedione or rhodanine with half the molar amount of a salt of hydrazine, (5) when R1 is not hydrogen, by reacting in the presence of an acid binding agent a compound of formula I in which R2 is hydrogen or has the meaning given above, and wherein at least one of R1 and R2 is hydrogen, with a reactive ester of a compound of formula R2-OH at least an equimolar amount of this compound being employed when only one of R1 and R2 is hydrogen, and at least double the equimolar amount being employed when R1 and R2 are both hydrogen, or (6) when R1 is not hydrogen, by reacting in the presence of an acid binding agent a compound of formula I in which R1 is hydrogen with at least an equimolar amount of a reactive ester of a compound R11-OH wherein R11 has the meaning given for R1 above with the exception of hydrogen.  The 2,5-dithiobiureas of formula III may be prepared by treating an isothiocyanate with a thiosemicarbazide.  The thiosemicarbazones of formula V or VI may be prepared by treating a rhodanine with a thiosemicarbazide.  Therapeutic compositions having turnover inhibiting and antiviral activity, which may be administered orally, rectally, parenterally or topically, contain as active ingredient a compound of formula I above.
Patent GB-1185930-A (GB)
Title: Containers for and methods of Packing
Inventor: GILBERT EDWARD WILLIAM NEVILLE
IPC: B65D81/07
Filed: 1967-10-26
Abstract: 1,185,930. Packing fragile articles; containers for fragile articles. BRITISH SHIP RESEARCH ASSOCIATION. 27 Aug., 1968 [26 Oct., 1967], No. 48824/67. Headings B8C and B8P. Fragile articles, such as delicate scientific instruments, are packed in a shock proof manner within a container by means of sets of mutually repellent magnets, one set being attached to the container and one set to the article. Rubber or other resilient material may be provided on the magnets to absorb impacts sufficiently large to overcome the magnetic repulsion. In the example an article 12 is suspended within a lidded container 10, 11 by sets of like poled ferrite magnets 14 and 15. The set 14 may be carried by a frame insertable into the container.