baber/WOPTO huggingface dataset:
Patent GB-1282981-A (GB)
Title: Dyestuff condensation products
Inventor: WOLF FRIEDRICH
IPC: C08G16/00
Filed: 1970-08-10
Abstract: 1282981 Dyestuff condensation products CHEMIEKOMBINAT BITTERFELD VEB 10 Aug 1970 38385/70 Heading C3R High-molecular weight dyestuff products are obtained by condensing together a ketone, formaldehyde and an organic dyestuff containing groups capable of condensation; the dyestuff may be condensed with a liquid condensation product of the ketone and formaldehyde. In examples Rhodamin 6, a dyestuff obtained by coupling aniline to carbamidinomethylpyrazolone and a cobalt mixed complex of the two dyestuffs 4,6 - dinitro - 2 - amino - phenol coupled with 2-naphthol-6-sulphamide and 4- nitro - 2 - amino phenol coupled with 1- phenyl - 3 - methyl - pyrazol - 5 - one - 4<SP>1</SP>- sulphamide, are condensed with acetone and formaldehyde and with an acetone/formaldehyde condensate. Uses.-As pigments and to colour synthetic fibres.
Patent GB-1497482-A (GB)
Title: Production of liquid edible oil from palm oil or similar oils
IPC: C11B7/00
Filed: 1975-09-18
Abstract: 1497482 Liquid edible oils HLS Ltd INDUSTRIAL ENG CO 18 Sept 1975 [22 Nov 1974] 38404/75 Heading C5C An improved edible liquid oil is produced from natural and semi-processed vegetable and animal oils and fats comprising both saturated and unsaturated fatty acid moieties in the relative molar ratio of about 1:1, wherein at least 90% of the saturated fatty acid moieties contain not more than 16 C atoms, by (a) reacting a portion of the starting oil or fat with at least one unsaturated fatty acid ester of a C 1 -C 3  alkanol, preferably ethanol, provided that, where a mixture of two or more such esters is used, they are all derived from the same alkanol, in the presence of a transesterification catalyst, e.g. alkali metal or alkoxide thereof, to form a first product mixture, (b) distilling this mixture below 40 Torr to give a distillate comprising a mixture of saturated and unsaturated fatty acid esters of the C 1 -C 3  alkanol and a distillation residue comprising an edible oil of lower I.V. than the starting oil or fat, this being the improved edible oil required from the process, (c) distilling the distillate from (b) below 40 Torr to separate the saturated from the unsaturated esters, (d) reacting the saturated esters from (c) with another portion of the starting oil or fat under conditions similar to step (a) to give a second product mixture, (e) distilling this mixture as in (b) to give a distillate of a mixture of saturated and unsaturated fatty acid esters and a residue of an oil of lower I.V. than the starting oil or fat, (f) distilling the distillate from (e) as in (c) to separate unsaturated from saturated fatty acid esters and recycling the former to step (a) together with that obtained in step (c) and the latter to step (d). The I.V. of the first and second distillation residues may be further increased and decreased respectively by further transesterification with respectively unsaturated and saturated fatty acid esters of the C 1 -C 3  alkanol. After step (b), the oil may be winterized to raise the melting point. After step (d), the product mixture may be winterized to provide further separation of a solid more saturated oil/ester mix from a liquid more unsaturated oil/ester mix.
Patent GB-1043118-A (GB)
Title: Seismic transducer for generating seismic waves in the earth
Inventor: CLYNCH FRANK
IPC: G01V1/053
Filed: 1964-09-21
Abstract: 1,043,118. Hydraulic reciprocating motors, pumps, &c. CONTINENTAL OIL CO. Sept. 21, 1964, No. 38445/64. Heading F1A. [Also in Divisions F2 and G1] A motor used to vibrate a mass 12 comprises a cylinder 31 in the base of a steel block 12 and a piston 18 reciprocated in the cylinder by admitting fluid alternately to chambers 36, 38. An electrically controlled servo-valve 54 controls the flow of fluid through ports 50, 52 to chambers 36, 38 respectively. Inner bearing inserts 32, 34 for the piston 18 form high pressure oil seals around the piston rods 20, 22 respectively and behind the inserts are low pressure packing glands 40, 42 held in place by bearing inserts 44, 46 which are bolted to the block 25. Piston 18 is machined to the finished outer dimensions and provided with grooves 150 for piston rings 152. Pins 154 extend from opposite faces of the piston into steel pipes 156 welded at 158 and at the joint 164 with closure plug 160, which is tapped to receive a bolt 88 extending through a plate 64. A key 169 prevents rotation of the cylinder sleeve 31 in the block 25. To reciprocate the motor high pressure fluid from a source (not shown) is admitted through a bore 360 by control valve 54, which is provided with five ports communicating with the power fluid source, the fluid sump, and cylinder chambers 36, 38. A bore 362 in block 25 communicates with the two exhaust ports of valve 54. Fluid entering bore 360 is alternately directed by valve 54 to one of the ports 50, 52 and hence through openings 176, 178 respectively to chambers 36, 38 alternately, the other of the ports 50, 52 being simultaneously connected to the exhaust bore 362. As the piston reciprocates the block 12 reciprocates also, but moves in the opposite direction and its movement is communicated to the support frame 24, cushioning members 252 being housed in uprights 80, to act as buffers for the block 12. To maintain the centring of the block 12 a transformer 260 is provided and comprises a rod 262 screwed into the block and extending into a control winding 270 mounted in the upright 80. By varying the length of the inserts 32, 34, the stroke of the piston may be altered, and hence the operating frequency. Reference has been directed by the Comptroller to Specification 903,496.
Patent GB-1161606-A (GB)
Title: Bulky Acrylic Composite Fibre and method for the production thereof
IPC: D01F8/08
Filed: 1966-08-26
Abstract: 1,161,606. Crimped acrylonitrile filaments. JAPAN EXLAN CO. Ltd. 26 Aug., 1966 [31 Aug., 1965], No. 38490/66. Heading B5B. [Also in Division D1] A composite fibre having its components arranged eccentrically along its length and having 10 or more crimps/25 mm., a crimping degree of at least 15% and a Young's modulus of at least 80 g./d. is made by concurrently extruding at least two copolymers of acrylonitrile with at least one unsaturated monomer copolymerizable therewith, the copolymers differing in chemical composition and/or molecular weight, washing and drawing the fibre and drying it without tension below 90‹ C. after the extrusion and drawing steps, and omitting any heat-treatment in a relaxed condition above 90‹ C. Exemplified are two copolymers with methyl acrylate arid sodium methallyl sulphonate having different contents of acrylonitrile, which are wet-spun from concentrated into dilute NaCNS solution. Other suitable copolymerizable monomers are listed.
Patent GB-949100-A (GB)
Title: Drive transmission for line-following machine tools
Inventor: BRADLEY JOHN RAMSAY
IPC: B23K7/00
Filed: 1961-10-27
Abstract: 949,100. Change-speed control. BRITISH OXYGEN CO. Ltd. Oct. 26, 1962 [Oct. 27, 1961], No. 38508/61. Heading F2D. In a drive transmission providing rightangled drives to a cross carriage of a linefollowing flame-cutting machine tool (not shown) in which the flame-cutting torch is mounted on the tool carriage movable along a beam which itself is movable at right angles along a slide, the drives 12, 13 are taken from two forward - through - zero - to - reverse - output infinitely variable-speed friction drive transmission units 10, 11, of the type described in Specification 936,838, of which the input pinions 8, 21, are driven at equal speeds through gears 19, 16, by a third, electrically driven, infinitely variable unidirectional unit 15 having its output speed regulated from zero to a maximum by a manual adjustment 17, the units 10, 11 being adjustable by rotation of a manually or photo-electrically steered linefollowing device 25, such rotation being transmitted through a gear 24 to gears 22, 23, coupled to sinusoidal control cams, relatively arranged 90 degrees out of phase, controlling both speed and direction of rotation of the two output cross carriage drives 12, 13 which vary substantially sinusoidally through a complete cycle as the line-following device rotates through one revolution, and direct a machine tool along a path parallel to a traced line. The units 10 and 11 may be provided with a positive location of the speed adjustment corresponding to zero output.
Patent GB-1393797-A (GB)
Title: Bulked conjugate filament acrylic yarn and method for the production thereof
IPC: D02G3/02
Filed: 1972-09-15
Abstract: 1393797 Conjugate filament yarns SNAM PROGETTI SpA 15 Sept 1972 [16 Sept 1971 7 July 1972] 38518/72 Headings D1F and D1W In a process for the production of bulked acrylic yarn, a yarn formed from continuous conjugate filaments formed from a plurality of acrylic homopolymers and/or copolymers having different chemical and/or physical characteristics is drawn and passed through an oven heated to a temperature in the range 130‹C-250‹C, preferably 160‹C, and is then given a false twist e.g. by means of a bar spindle or a friction spindle and passed through a second oven at a temperature of at least 120‹C. In a preferred embodiment, the second oven has a temperature in the range 120‹C-200‹C, preferably 150‹C. The bulked yarn produced contains 4-15 crimps per centimetre, preferably 7-12 crimps per centimetre, a rate of crimping (defined in the specification) of 5%-20%, preferably 8%-15%, is capable of elongation by from 10%-30% and retains the crimping characteristics when loaded by up to 1.5 gm/denier. Several examples of the process are described in the Specification with numerical data.
Patent GB-1202602-A (GB)
Title: Improvements relating to generating stepped voltages
IPC: H04N9/27
Filed: 1967-08-22
Abstract: 1,202,602. Converting. INTERNATIONAL POLAROID CORP. 22 Aug., 1967 [22 Aug., 1966], No. 38562/67. Addition to 1,124,873. Heading H2F. [Also in Division H3] The voltage across the capacitance of a resonant circuit is repeatedly changed between two values while the inductance of the circuit is temporarily reduced, the change in one direction only being effected by a steady voltage source. The resulting wave is added to a steady EHT voltage so that the combined voltage alternates between two positive values. In Fig. 2 a pulse from a thyristor oscillator 81 renders the thyristor 58a<SP>1</SP> conducting. This effectively shortcircuits the primary winding 54b<SP>1</SP> raising the resonant frequency of the secondary circuit so that output capacitance 55 is charged steeply during a half-cycle of oscillation (80b, Fig. 3, not shown). Meanwhile a capacitor 59<SP>1</SP> charges and extinguishes the thyristor at about the end of the half-cycle. The resonant frequency is now much lower and the voltage across the capacitance 55 is substantially maintained (80a, Fig. 3, not shown) until thyristor 60<SP>1</SP> is fired whereupon the charge in capacitor 55<SP>1</SP> is rapidly reduced in a resonant manner while capacitor 59<SP>1</SP> discharges. The resulting substantially square wave secondary voltage is added in series with (or in parallel with, Fig. 7, not shown) a D.C. EHT voltage applied at 46<SP>1</SP> so as to provide an EHT voltage (for the target of a colour cathode ray tube) which steps between two high-voltage levels. In Fig. 4 (not shown), a single primary winding is used and in Fig. 5 (not shown), the downward step is produced by short-circuiting a tertiary winding through a resistor so as to dissipate energy stored in the inductive circuit. Transistors may he used as the switches.
Patent GB-860882-A (GB)
Title: Improved vacuum cleaner
IPC: A47L9/02
Filed: 1958-12-01
Abstract: 860,882. Picking-up tools. JOYCE, J. A. Nov. 26, 1959 [Dec. 1, 1958], No. 38675/58. Class 61. [Also in Group XXVIII] A suction nozzle may have magnets arranged around or within it, so as to collect and retain any small ferrous metal objects.
Patent GB-1064253-A (GB)
Title: Extremely low temperature variable negative-resistance device
IPC: H03B15/00
Filed: 1963-10-01
Abstract: 1,064,253. Semi-conductor devices. HITACHI SEISAKUSHO KABUSHIKI KAISHA. Oct. 1, 1963 [Oct. 3, 1962], No. 38677/63. Heading HIK. A variable negative resistance device comprises a highly compensated (ratio 0À5 to 0À9) semi-conductor body at a temperature below 77‹ K. with two electrodes and means for applying a variable magnetic field to the body to vary its negative resistance characteristics. The majority impurity concentration has between 10<SP>14</SP> and 10<SP>16</SP> atoms per cc. and germanium may be used as the semi-conductor material. The magnetic field direction may be axially along, or normal to the semi-conductor body.
Patent GB-893416-A (GB)
Title: Improvements in coin freed dispensing apparatus
IPC: G07F1/02
Filed: 1959-11-16
Abstract: 893,416. Coin-freed vending apparatus. RENTON, J. G. Jan. 30, 1961 [Nov. 16, 1959], No. 38782/59. Class 27. The coin slot 3 of a dispensing apparatus, particularly one for dispensing petrol is normally masked by a shutter 10 which requires to be opened by a key, supplied by the petrol company or a motoring organisation, before coins can be inserted. The shutter may be rotated directly by a key inserted in a keyhole 7 or a sliding shutter may have an integral rack engaging with a key-operated pinion; the key can be withdrawn only when the shutter is returned to its masking position. The petrol may be dispensed in separate containers or from the customary hose of a pump. A remote control unit incorporating the coin slot is preferably embedded in a wall at a distance from the pump and has a warning light to indicate whether or not a coin has been accepted and a reject button for unacceptable coins. The shutter may be linked with the remainder of the apparatus so that only a given number of coins can be inserted during one shutter opening and may be arranged to close automatically when the hose is replaced in its "out-of-use" position.
Patent GB-370030-A (GB)
Title: Improvements in or relating to electrical impedance networks
IPC: H03H7/00
Filed: 1930-12-24
Abstract: 370,030. Impedance networks. RUST, N. M., 109, London Road, Chelmsford, Essex. Dec. 24, 1930, No. 38939. [Class 40 (iii).] Frequency-variations of phase or attenuation are corrected by means of voltages tapped from networks of the type shown in Figs. 1, 2, and 3, so dimensioned as to offer at their input terminals I a non-reactive impedance which is independent of frequency. In Fig. 1, r = r<1> = #(l/c) and the impedance at terminals I is consequently equal to r at all frequencies. The primary p, Fig. 1, is connected between terminal o and a variable tapping t on r, while primary p<1> is connected between o and t<1>. According to the setting of the reversing-switch s, either the phase-lag or the attenuation of the transmitted voltage is principally affected by variation of frequency. The transformer may be dispensed with, and the system shown in Fig. 2 may be used for phase-correction or that shown in Fig. 3 for amplitude correction. More complicated networks, Figs. 4 and 5 (not shown) may be adopted, on each resistance r, Fig. 3, may be replaced by a subnetwork of a type similar to the whole network in Fig. 3 ; each resistance in this subnetwork may be replaced by a subsubnetwork, and so on, Fig. 8 (not shown). A simplified form of the latter arrangement is shown in Fig. 11, when there is only one ultimate subsubnetwork A. In further modifications the inductance l, Figs. 2 and 3, may be replaced by a resonant arm and the capacity. c by an antiresonant arm, Figs. 12, 14 (not shown). The Specification describes graphical methods of computing for given conditions, the valves of the impedance elements and the setting of the tapping points on the resistance r, r<1>.
Patent GB-1489498-A (GB)
Title: Slider for concealed sliding clasp fasteners
IPC: A44B19/26
Filed: 1975-09-24
Abstract: 1489498 Slider for concealed sliding clasp fasteners YOSHIDA KOGYO KK 24 Sept 1975 [30 Sept 1974] 39087/75 Heading E2S In a concealed sliding clasp fastener of the kind wherein a pair of stringer tapes 20, 20 have rearward folds 19, 19, formed along their confronting longitudinal edges to support respective rows of scoops 22, 22 thereon and a slider movable along the rows of scoops for coupling and uncoupling the same, the slider comprising a bottom wall 35 having a separator 12 formed centrally at its front, scoop-receiving end, the separator 12 having a pair of inner lips 36 formed at its inboard end and a pull tab 32 pivotally coupled thereto; and a pair of side walls 39, extending along respective marginal edges of the bottom wall 35 from its rear end, and terminating short of its front end. The slider 10 also essentially comprises a pair of outer flanges 40, 40, which extend towards each other from the side walls 39, respectively and which are arranged slightly outwardly of the inboard end of the separator 12, the front end of each outer flange 40 having an inside corner 43 opposed to one of the inner lips 36 and spaced therefrom a distance slightly in excess of the thickness of each stringer tape. In use when the slider is moved in its fastener closing direction, and as the fastener elements scoops 22 move over the uncovered shoulder portions 41 of the slider bottom wall 35 and into the slider guide channel 42, the corners 43 of the flanges 40 exert a transverse pull on each tape to cause the bight portions 23 of each fastener scoop 22 to rotate downwards and lower the loose edges 21 of the folds 19 so that they are guided properly under the flanges 40, the scoops 22 being re-adjusted by the lips 36 as they pass through the guide channel 42.
Patent GB-376233-A (GB)
Title: Improved process of producing variegations in plastic masses and products obtained thereby
IPC: B44C1/26
Filed: 1930-12-30
Abstract: Variegations in plastic masses are obtained by introducing into the mass before it has attained its final state a flexible material which does not flow out into the plastic mass.  The flexible material may be paper containing gelatin which has been brought into an insoluble state as by means of formaldehyde.  The plastic mass may be the substance known under the Trade Mark "Bakelite."
Patent GB-850769-A (GB)
Title: Conveyor system and retractable latch therefor
Inventor: WESTEREN HERBERT W
IPC: F27B9/26
Filed: 1958-12-05
Abstract: 850,769. Continuous metal heating furnaces; charging and discharging. HAYES Inc., C. I. Dec. 5, 1958, No. 39225/58. Class 51 (2). [Also in Group XXX] Work containers 20a ... 20f, Fig. 1, are moved through a furnace 10, by one or more latches 78, Fig. 3, pivotally mounted in members 66 which are pivotally connected by links 100, each latch being moved automatically to engage a container by sliding over a roller 92 when the member is moved in the direction of the arrow and retracted when the series is moved in the opposite direction. The ends of the series 66, 100 are connected by chains 104, 120 to a cable 110 which passes over circuit breakers 114, 118 to an electrically driven winch 116. If jamming occurs within the furnace, the increased tension of the cable will actuate one of the circuit breakers to put the motor of the winch out of action. The containers are mesh baskets, Fig. 7, having skids 22 secured to their bottoms which travel on the floor of the furnace. The front of each basket is attached to a transverse rail 24 which is engaged by a latch 78. The furnace floor has a central trough 56 which in the heating chamber 36 is formed by a pair of spaced corrugations 58. The platform of the discharging elevator 48 is provided with a trough which is a continuation of the trough 56. Work containers are introduced through a cover 18 on to charging elevator 16 from which they are moved into the position occupied by container 20b by a reciprocating sweep 28 actuated by counterweighted chains 30 and a drum 32. Chamber 36 is muffle heated and cooling section 44 has a water jacket on all four sides, Fig. 9 (not shown). The roof 42 and side walls of the furnace entrance are also water cooled, Fig. 8 (not shown).
Patent GB-826091-A (GB)
Title: Improvements in or relating to rolling bearings
IPC: F16C33/56
Filed: 1957-12-17
Abstract: <PICT:0826091/III/1> <PICT:0826091/III/2> A cage for roller bearings comprises a metallic body which is slightly smaller than the finished cage and on which at least some of the surfaces which may be subjected to sliding friction in use is coated a comparitively thin layer of plastic, e.g. polyamide, or polytetrafluorethylene.  Cages 5, located between inner and outer race rings 2, 1, have pockets 6 for two rows of rollers 3 whose inner ends bear against a flange 4 which is located centrally on the inner ring 2 and on which the cages 5 slide. Any, or all of, the pocket surfaces 7, 8, 9 of the cages, their meeting surfaces 10, and their surfaces 11 which slide on the flange 4, can be coated with plastic and in some cases, in order to protect the cages from rust, they may be entirely coated with plastic.  The cage can be made, e.g. by shell casting cast iron, the sliding surfaces first being treated, e.g. by sandblasting, pickling, or phosphatizing, and then being heated to about 250 DEG  C. and polyamide powder applied.  If the powder does not sinter entirely to form a continuous layer the cage should be reheated again to the same temperature.  The layer should preferably not exceed 0.3 mm. thickness.  When the coating is of polyamide it may contain about 3%, e.g. of molybdenum disulphide, or graphite, to lower the coefficient of friction.
Patent GB-800149-A (GB)
Title: Electric clutch-brake driving device
IPC: D05B69/12
Filed: 1956-12-27
Abstract: 800,149. Motor driving arrangements. SINGER MANUFACTURING CO. Dec. 27, 1956 [Jan. 3, 1956], No. 39292/56. Class 35. [Also in Group XXIV] An electric motor 10, particularly for driving sewing machines, is supported so as to allow of tensioning of the driving belt 15 whilst at the same time to provide for correct location of the actuating linkage 17, 25 of a clutch and brake associated with the motor. For tensioning, the motor is secured to a pair of spaced straps 36, 37 by bolts 45, 46 which pivotally engage a tube 35 carried by a bracket 26 secured to the table 16 of the machine, an adjustable link 48 being provided to lock the motor and straps 36, 37 in any desired position. The bolts 45, 46 pass through slots 47 in the straps so that the motor may be turned about its axis on slackening these bolts to position the actuating linkage 17, 25 as may be desired. Specification 800,150 is referred to.
Patent GB-925835-A (GB)
Title: Improvements in or relating to locks
IPC: E05B63/06
Filed: 1959-11-19
Abstract: 925,835. Lock and latch fastenings. H. WOLTER. Nov. 19, 1959, No. 39320/59. Class 44. In a furniture lock or latch mechanism comprising a revolving barrel lock 9 and a latch or dead bolt lock in operative combination, the side plate 2 of the housing of the latch or dead bolt has a slot 19 formed therein normal to the face plate 15 in which the inner end of the lock 9 is slidably engaged. In fitting the mechanism to a suitably slotted and bored furniture drawer front, Fig. 4, the barrel lock is slid through the bore prior to sliding the housing downwardly into the drawer slot such that the inner end of the lock 9, through suitable projections thereon, slidingly engages the edges of the slot 19. The barrel lock comprises a cylinder 16 carrying a follower 5 which, in operation of the mechanism, engages a latch member comprising operating jaws 6, 7, cross-piece 8 and a latch nose 10 pivoted to the plate 2 at 11 and resiliently loaded into locking position by a spring 13 located between the jaw 7 and a flange 12 turned up from the plate 2. In a mechanism having a dead bolt 25, Figs. 9, 13, with a slidable tail 26, the jaws 6, 7, carry a pin 28 which engages a slot 27 formed in the tail. Movement of the key-operated jaws is also transmitted to the bolt by the abutment of the cross-piece 8 with a shoulder formed in the tail. In yet another embodiment the jaws 6<SP>1</SP>, 7<SP>1</SP>, Fig. 14, are separate each being pivoted at 11<SP>1</SP>, 11, and connected to the tail 26 through a pin-andslot assembly 27, 28 or 27<SP>1</SP>, 28<SP>1</SP>.