baber/WOPTO huggingface dataset:
Patent GB-1483090-A (GB)
Title: Friction twisting head
IPC: D02G1/08
Filed: 1974-09-19
Abstract: 1483090 Adjustable friction twisting apparatus: Creels WARNER & SWASEY TEXTILE MACHINE CO 19 Sept 1974 [10 Oct 1973 12 June 1974] 40796/74 Headings D1D and D1J Yarn is false twisted frictionally by engagement with rotating twist appliers whose peripheral surfaces the yarn passes over, the amount of twist inserted being controlled by adjustment of the amount of contact with the peripheral surface by selective adjustment of the displacement of the yarn in passing over the surface and without altering the yarn speed or surface speed, or the locations of the rotation axes of the twist appliers. As shown the twist appliers each comprise a friction member 113, 114 and 115 and cooperating anvils 116, 123 and 122. The centre anvil 123 is mounted to be adjustable about the periphery of friction member 114, Fig. 9, to adjust the amount of twist inserted. An alternative adjustable member is shown in Fig. 12 and comprises a pair of guides 123', 123" located either side of a friction surface 114', the guides being movable about the periphery of the friction surface. Fig. 1 shows a dual twisting head 32 located in a machine which is fed from a creel having a dual yarn supply 12, 14.
Patent GB-1130702-A (GB)
Title: The preparation of carboxylic acids
IPC: C07C51/34
Filed: 1965-09-24
Abstract: 1,130,702. Carboxylic acids. ETHYL CORP. 24 Sept., 1965 [1 Oct., 1964 (3)], No. 40810/65. Heading C2C. [Also in Division C5] In a process for the preparation of carboxylic acids by reacting one or more olefines, each with at least one hydrogen atom bonded to each carbon of the ethylenic linkage, with ozone in the presence of an inert organic hydroxy reaction medium the reaction product is oxidized with an oxygen-containing gas free of ozone, in the presence of a mineral acid catalyst. Olefines with from 6 to 30 carbon atoms are preferred, and mixtures of 12-26 C per molecule are mentioned. Examples describe the treatment of 1-dodecene to yield undecanoic acid, decene-1, octadecene, and mixtures of dodecene isomers to yield the corresponding acids. Acid catalysts mentioned are hydrochloric, sulphuric, and meta-, tri-, ortho-, and pyrophosphoric acids. Metal salts such as those of iron, cobalt, nickel, palladium, and platinum may also be present. The acids may be used to prepare soaps, e.g. sodium, potassium and heavy metal soaps and the acids with byproduct ketones may be used in aqueous emulsion as lubricants.
Patent GB-1060788-A (GB)
Title: Solar energy collector
IPC: F24J2/46
Filed: 1964-10-07
Abstract: The solar energy collector disclosed in Specification 1,043,783 comprising a thermally conductive base, a barrier layer of a thermally refractory material and a receiver layer comprising a fused mixture of gold and a glass is modified by the application of a thin optically interfering layer of a solar energy transmitting thermally refractory material over the receiver layer.  The optically interfering layer consists of a refractory oxide such as alumina, silica or ceria or mixtures thereof and is 0.1 to 0.4 microns thick. The layer is applied as a solution in an organic solvent of a resinate of aluminium, silicon or cerium, preferably by spraying. More than one coating layer may be applied and drying in air is effected at 300 DEG  - 800 DEG C., to form the layer of alumina, silica or ceria.ALSO:The solar energy collector disclosed in Specification 1,043,783 comprising a thermally conductive base, a barrier layer of a thermally refractory material, a receiver layer comprising a fused mixture of gold and a glass is modified by the application of a thin optically interfering layer of a solar energy transmitting thermally refractory material over the receiver layer. The optically interfering layer consists of a refractory oxide such as alumina, silica or ceria or mixtures thereof and is 0.1 to 0.4 microns thick.  The layer is applied as a solution in an organic solvent of a resinate of aluminium, silicon or cerium, preferably by spraying.  More than one coating layer may be applied and drying in air is effected at 300 DEG -800 DEG C. to form the layer of alumina, silica or ceria.
Patent GB-1242587-A (GB)
Title: Book pressing machine with improved presser plate and conveyor mechanism and with improved dual channel arrangement
IPC: B42C13/00
Filed: 1968-08-28
Abstract: 1,242,587. Book pressing machines. SMYTH MFG. CO. 28 Aug., 1968 [20 Oct., 1967], No. 41036/68. Heading B6A. A book pressing machine of the dual channel type comprises a pair of channels 10, 10a, Fig. 1, each of which includes a plurality of processing stations A, B, C . . . through which books 14 are advanced successively by intermittently driven, endless conveyer belts 48, 50, 48a, 50a, of the slatted type and at which the books, which are stationary, are simultaneously pressed by presser plates 16, 18; 20, 22; 24, 26 and creased by underlying creaser irons such as 32, 34, Fig. 2, the books 14 being engaged continuously by the slats 152 of the conveyer belts 48, 50..., as the books are advanced through the machine. The slatted conveyer belts 48, 50 are disposed between the presser plates 16, 18 and presser irons 32, 34 and mounted on a support member 166, Fig. 6, in turn attached to a presser plate support member 30, whereby the slats 152 of the conveyer belts project inwardly into the channels to convey the books past the retracted presser plates and creaser irons. When the presser plates 16, 18 and presser plate support members 30, 28, Fig. 1, are reciprocated into operative positions by rack drives 94, the support member 30 exerts an additional compressive force on the slats 152 in engagement with part of the cover of the book through a spring-biased member 170, Fig. 6. The presser irons are reciprocated simultaneously with the presser plates by a drive similar to the rack drive 94. The addition displacement of the conveyer slats 152, which jointly with the belt 48 are mounted on support member 166, stops the conveyer belt drive by disengaging a bevel gear 192, Fig. 11, which drives the conveyer sprocket gear 188, from a bevel pinion 194.
Patent GB-1183049-A (GB)
Title: Riveting Apparatus
Inventor: HESLOP VICTOR LORRAINE
IPC: B21J15/34
Filed: 1966-09-16
Abstract: 1,183,049. Apparatus for setting tubular rivets. AVDEL Ltd. 12 Sept., 1967 [16 Sept., 1966], No. 41476/66. Heading B3U. A riveting apparatus for setting tubular rivets 13 comprises a mandrel 11 having tubular rivets mounted thereon and having a head 12, a pair of jaws 14 through which the rivets are fed one at a time and against which they abut as the mandrel is withdrawn and pneumatic rivet feeding means to feed the rivet through the jaws, the feeding means applying a force to the rivets on the mandrel and not to the mandrel. The jaws are spring urged together and mounted on a barrel 15. The barrel has three pistons 29 mounted on it and the housing 23 of the apparatus has three cylinders 26 formed therein by partitions 28. The mandrel end is gripped by grippers 19 and the barrel 15 is spring urged rightwards by a helical spring 31. In operation, the trigger 37 is depressed manually to move a valve member 36 and admit compressed air through passages 34, 35 to the rear of the pistons 29. The pistons are moved leftwards and force the leading rivet 41 over the mandrel to deform the shank of the rivet. Upon release of the trigger 37, the pistons move rightwards under spring bias and the next rivet is fed through the jaws. The rivet feed means comprises a piston 42 slidably mounted on the mandrel and which is urged leftwards by compressed air admitted to the rear of the piston upon the return of the pistons 29. The compressed air is supplied via passages 49, 51 to a chamber 55 but is prevented from moving the piston until the passage 58 on the barrel 15 is to the left of the O-ring 60 which only occurs after a rivet upsetting stroke. The piston 42 acts through a spring 43 on the rearmost rivet to force the leading rivet through the jaws. No compressive force is applied to the mandrel during the feed. In an alternative similar embodiment, Fig. 2 (not shown), the mandrel grippers (73) are operated pneumatically and the rivet feed means is arranged so that if the mandrel is not gripped by the grippers the compressed air supplied to move the feed piston 42 is vented to the atmosphere. Further the apparatus of this embodiment is controlled by a foot pedal (83).
Patent GB-1166654-A (GB)
Title: Improvements in or relating to Machines for Paving Concrete
Inventor: MCGREGOR MATTHEW
IPC: E01C19/48
Filed: 1966-09-16
Abstract: 1,166,654. Paving machines. ROBERT McGREGOR & SONS Ltd. 11 Sept., 1967 [16 Sept., 1966], No. 41492/66. Heading E1G. A slip form paving machine has a conforming plate 1 and at least one vibratable compacting member 5 each of which extends transversely across the width of the machine and has a number of spaced horizontal or inclined plates 6 fixed thereto and projecting laterally therefrom. The members 5 are resiliently suspended from beam structures 8 attached to the machine through shock absorbing mountings 9. A synchronised drive acting through eccentrics 10 phased to eliminate axial thrusts is employed.
Patent GB-1280316-A (GB)
Title: Semiconductor gunn effect amplifier
IPC: H01L47/00
Filed: 1969-08-21
Abstract: 1280316 Gunn effect amplifiers TELEFUNKEN PATENTVERWERTUNGS GmbH 21 Aug 1969 [21 Aug 1968] 41739/69 Heading H3T [Also in Division H1] An amplifier has a Gunn effect semi-conductor element Pr v  biased between the critical value for initiation of a high field domain and the domain extinction value and initiation of a high field domain is effected by a trigger pulse which raises the field strength in the element above the critical value. The amplifier Gunn effect element Pr v  is triggered by oscillations from a further Gunn effect element Pr o  coupled to the element Pr v  by a series tuned circuits L 3 , C 3  tuned to the Gunn oscillations. The input signal f s  to be amplified is coupled to the amplifier element Pr v  by a circulator Zi and a series resonant circuit L 4 , C 2  tuned to the input frequency f s . Output is obtained at the load RL. The output from the oscillator element Pr o  may be coupled to an additional control electrode near the cathode of element Pr v . The amplifier element Pr v  may also act as the oscillator (Fig. 2, not shown), where parallel tuned circuits L 5 , C 5  and L 6 , C 6  tuned to the Gunn oscillations and the signal frequency respectively are connected to the element Pr v . In such an arrangement the Gunn effect element Pr v  is mounted in a resonator tuned to the Gunn frequency such that the positive half waves of these oscillations trigger the element. The Gunn effect element may be constructed to provide this self triggering by having less doping present at the region near the cathode (k) of the element Pr v  or by having a smaller cathode contact than anode contact and/or by reducing the area of the semiconductor body of the element Pr v  near the cathode, (Figs. 3 to 5, not shown). The transition between the areas, (Fig. 5, not shown), may be abrupt, in steps or gradually. The amplifier may be used as an up or down frequency conversion mixer with pre or post amplification.
Patent GB-1530288-A (GB)
Title: Photopolymerisable copying materials
IPC: H05K3/38
Filed: 1975-10-13
Abstract: 1530288 Photopolymerizable materials containing adhesion promoting compounds HOECHST AG 13 Oct 1975 [14 Oct 1974] 41801/75 Heading G2C A photopolymerizable material includes an adhesion promoting amide compound of Formula: in which m is 1 or 2, n is 1 or 2, and R 1  and R 2  are H, halogen, alkyl or alkoxy. The compound is in the polymerizable layer or between the layer and a support e.g. a Cu or Cu alloy plate. Amides specified are i) 2-mercapto acetic acid anilides and 3-mercapto propionic acid anilides substituted in the benzene ring by Cl, F, CH 3  and CH 3 O-, and N, N'-bis-(3-mercapto-propionyl)-1,3-phenylene diamine and N, N'-bis-(3-mercapto-propionyl)-1,4- phenylene diamine. The photo-sensitive layer comprises (a) a binder (b) an ethylenically unsaturated photo-polymerizable compound and (c) a photo-initiator, and may have a removable protective film. The layer can be carried on a temporary support and coated with the adhesion promoting amide prior to lamination to the permanent support.
Patent GB-921566-A (GB)
Title: Battery charging circuits
IPC: H02J7/00
Filed: 1961-11-22
Abstract: 921,566. Battery charging systems dependent on variable-speed generators. RADIO CORPORATION OF AMERICA. Nov. 22, 1961 [Dec. 9, 1960], No. 41819/61. Class 38 (4). A battery 12 is charged from a direct current variable-speed generator 14 by way of a transistor 16, a biasresistor 24 limiting the maximum charging current, a Zener diode 22 being provided which breaks down when the battery is fully charged, thereby cutting off the transistor 16 to end the charge. A diode 20 is provided to prevent reverse voltage appearing across the transistor 16.
Patent GB-1529869-A (GB)
Title: Elastic surface wave device
IPC: H03H9/02
Filed: 1975-10-13
Abstract: 1529869 Surface wave devices TOKYO SHIBAURA ELECTRIC CO Ltd 13 Oct 1975 [15 Oct 1974] 41867/75 Heading H3U The widths l1, l2 of overlapping fingers in a surface wave interdigital transducer and their spacing l3 satisfy the relationships: and where Vm and Vf are respectively the surface wave velocities under and between the fingers, and f0 is the centre frequency of the transducer. This arrangement causes reflected waves W1, W2 to mutually cancel and reflected waves W3, W4 also to mutually cancel. Thus assuming Vf, Vm to be equal l1 may equal #/8 and l2 may eaqual 5#/8. The widths of the fingers attached to each electrode may vary, see e.g. Fig. 4, and thin fingers may alternate with thick fingers on each electrode, see Fig. 5.
Patent GB-943017-A (GB)
Title: Pneumatic or hydraulic controlling or calculating devices
Inventor: LOOTZOOK YURY VLADIMIROVICH
IPC: F15C1/06
Filed: 1959-12-15
Abstract: 943,017. Regulating fluid flow. PNEUMOHYDRAULIC AUTOMATIC CONTROL LABORATORY. Dec. 15, 1959, No. 42552/59. Heading G3H. In a fluid switch the nozzles 7,9 and the immediately associated chambers and passages 11, 6 are formed in a plate member. Two switches may be arranged in a stack as shown.
Patent GB-1120181-A (GB)
Title: Improvements relating to inertial navigation systems
Inventor: WILSON PETER
IPC: G01C25/00
Filed: 1964-10-19
Abstract: 1,120,181. Inertial navigation systems. ELLIOTT BROS. (LONDON) Ltd. Oct. 15, 1965 [Oct. 19, 1964], No.42614/64. Heading G1C. A system for correcting, incidental to takeoff, the inertially derived azimuth heading derived from an inertial platform carried by an aircraft, the inertial platform giving a signal output indicative of the velocity of the aircraft, comprises in combination, means developing a signal indicative of the true known runway heading sine/cosine resolvers which receive the velocity signal and the runway heading signal and produces a first inertially derived signal indicative of aircraft velocity along the runway and a second inertially derived signal indicative of velocity lateral to the runway due to error in heading of the platform and integrator means connected to receive the first and second signals and having an output proportional to the distance 'S' travelled along the runway and an output proportional to the lateral error distance 'X' perpendicular to the runway, the platform being connected in azimuth according to X/S , the integrator means comprising a first integrator fed with the first inertially derived signal so that its output is indicative of distance travelled along the runway and a second integrator fed with the second inertially derived signal and with the output of the first integrator, the output of the second integrator being used to correct the azimuth heading error of the platform. The output from the first integrator may be fed to a comparator also fed with a signal representative of a predetermined distance along the runway, so that correction may be effected when the two inputs to the comparator are equal i. e. when the aircraft has travelled the predetermined distance along the runway. Alternatively measurements of distance travelled along and normal to the runway may be stopped under control of means responsive to take-off of the aircraft.
Patent GB-1245854-A (GB)
Title: Removal of nitric oxide from industrial gases
Inventor: BRESSAN GIANCARLO
IPC: C07C9/00
Filed: 1969-08-28
Abstract: 1,245,854. Purifying nitrogen. MONTECATINI EDISON S.p.A. 28 Aug., 1969 [31 Aug., 1968], No. 42784/69. Heading C1A. [Also in Division C5] In Examples 1-6 nitrogen is freed from nitric oxide by washing with an aqueous solution comprising a ferrous salt, an inorganic ammonium salt and ammonia. The washing may be carried out in the presence of metallic iron.
Patent GB-1495961-A (GB)
Title: Manufacture of plastics material articles
IPC: B29B13/08
Filed: 1974-10-04
Abstract: 1495961 Sheet forming PLASTONA (JOHN WADDINGTON) Ltd 30 Sept 1975 [4 Oct 1974] 43080/74 Heading B5A [Also in Divisions B8 and F4] Articles 2 are formed from a web 16 of plastics material in a machine 1, after the sheet has been heated in an oven 3, the web being progressively extended by the action of laterally-spaced conveyer chains 5. The latter each comprise spike members 14A which have flanges 17 running on rails 18. A cam surface 18A engages follower portions on alternate chain links, and so causes tucks to form in the chain, thereby bringing the spike members closer together. After this happens, the web 16 coming off a roll 4, engages the spikes over the point of entry to the oven. As the chains pass through the oven 3, a cam surface 18B causes the chain tucks to progressively diminish to zero, thus balancing out in the web, the effect of expansion due to the raised temperature.
Patent GB-1520599-A (GB)
Title: Method for preparing an alkenyl succinic acid lactone product
IPC: C10L1/198
Filed: 1976-10-16
Abstract: 1520599 Gasoline composition TEXACO DEVELOPMENT CORP 16 Oct 1976 43085/76 Heading C5G [Also in Division C3] Motor fuel gasoline hydrocarbons contain as a rust- and corrosion-inhibitor a high mol. wt. alkenyl-substituted lactone obtained by treating an alkenylsuccinic acid (the alkenyl radical having an average mol. wt. of 300 to 3000) with a protonating agent or electron pair acceptor, selected from ptoluene-sulphonic acid hydrate, BF 3  etherate, a sulphonic acid ion exchange resin, or conc. H 2 SO 4  or HClO 4 , under substantially anhydrous conditions at 25-100‹ C.
Patent GB-1338261-A (GB)
Title: Power supply circuit for continuous-wave magnetron
IPC: H02M7/06
Filed: 1971-09-16
Abstract: 1338261 Supply systems for magnetrons INTERNATIONAL STANDARD ELECTRIC CORP 16 Sept 1971 [18 Sept 1970 7 April 1971] 43309/71 Heading H2H [Also in Division G3] An adjustable power supply circuit for a magnetron 1 comprises a high voltage D.C. supply 3-5 and a low voltage D.C. supply 6-8, both derived from the same source U, a device 10 for establishing an E.M.F. in opposition to the low voltage D.C. supply and resistors 11-1 to 11-4, the output power of the magnetron being determined by the values of the resistors, the high and low D.C. voltages and the opposed E.M.F. The magnetic field of the magnetron is provided by the coil 2 of an electromagnet, the coil being connected in series with the anodecathode gap of the magnetron. Ganged movable contacts 9 and 12 select the tapping point of a transformer 6 and the value of the resistance 11 to vary the output power of the magnetron by adjusting the current Ia which in turn adjusts the current I through the magnetron. The device 10 may be a Zener diode or a discharge tube. Since both the high and low D.C. voltages are derived from the same source U their proportional voltage fluctuations due to fluctuations of the source U are the same and since the voltage across the device 10 does not fluctuate, a circuit analysis enables the value of the device 10 to be calculated such that the output power of the magnetron is stabilized with respect to source voltage fluctuations. Stabilization against severe fluctuations of the supply U may be achieved by using a common saturated core transformer. In modifications, the magnetron output power is varied by adjusting the tapping point of a chain of Zener diodes or the tapping points of both a chain of Zener diodes and a chain of resistors. A further modification using a D.C. amplifier in the low voltage D.C. supply is also described.
Patent GB-1117013-A (GB)
Title: Excavating machines
IPC: E02F5/08
Filed: 1965-10-14
Abstract: 1,117,013. Excavators. V. S. PENOTE. 14 Oct., 1965, No. 43645/65. Heading E1F. At opposed ends of a machinery housing rotatably mounted about a vertical axis on a self-propelled chassis of a bucket wheel or ladder excavator are mounted wheel or ladder digging units that can be independently adjusted vertically so as to cut at different levels during advance of the excavator. Each of the digging units is pivoted by an hydraulic ram extending between the unit and the housing about a pivotal connection between the frame and the unit and, preferably, one of said pivotal connections is higher than the other on the housing.
Patent GB-1203004-A (GB)
Title: Improvements in or relating to refractory materials
Inventor: BLANKE MARTIN
IPC: C04B35/107
Filed: 1968-09-13
Abstract: 1,203,004. Refractory material comprising at least 97% Al 2 O 3 . DYNAMIT NOBEL A.G. 13 Sept., 1968 [14 Sept., 1967], No. 43733/68. Heading C1A. [Also in Division F4] A refractory material which has been cast in molten form comprises aluminium oxide. silicon dioxide, titanium dioxide, ferric oxide, an alkaline earth metal oxide and an alkali metal oxide, the aluminium oxide being present as at least 97% by weight and the silicon dioxide being present as from 0À3 to 0.8% by weight of the material. The preferred composition of the material is 97-99% Al 2 O 3 , 0À3-0À8% SiO 2 , 0.2 to 0.4% TiO 2 , 0.05- 0À11% Fe 2 O 3 , 0À33-0À94% alkaline earth metal oxide and 0À22-0À24% alkali metal oxide. The preferred alkaline earth metal oxides are CaO or MgO. The preferred alkali metal oxides are Na 2 O or K 2 O. The refractory material may be used as a furnace lining.
Patent GB-1061679-A (GB)
Title: Temperature compensated humidity responsive element
IPC: G01N19/10
Filed: 1965-10-15
Abstract: 1,061,679. Laminates. W. M. CHACE CO. Oct. 15, 1965 [Oct. 16, 1964], No. 43893/65. Heading B5N. [Also in Division G1] A laminated element for sensing and controlling humidity comprises three laminµ arranged in surface to surface contact and secured together over the entire area of their contiguous surfaces so that the laminated element acts as an integral whole, at least one of the laminµ being formed of a hygroscopic material which changes dimensions in response to changes in ambient humidity conditions, at least one of the remaining two laminµ being formed of a non-hygroscopic material, said remaining two laminµ being formed of materials having different coefficients of thermal expansion. In the examples given the hygroscopic material is nylon and the other two layers are metal or one of said other layers is metal and the other is nylon coated with a layer to render it non-hygroscopic.