baber/WOPTO huggingface dataset:
Patent GB-349952-A (GB)
Title: Photographic film-packs
IPC: G03B17/34
Filed: 1929-11-29
Abstract: 349,952. Photographic film-packs. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. Nov. 29, 1929, No. 36665. Convention date, Nov. 29, 1928. Void [Published under Sect. 91 of the Acts]. [Class 98 (i).] The exposure aperture of a film-pack employing orthochromatic or panchromatic films is provided with one or more light-filter foils, which may be fixed. Preferably, however, the foils are attached at one end to tabs similar to but distinguishable from those attached to the sensitive films, so that, when not required, they may be drawn from the front compartment of the pack into the rear compartment; and they may also be provided at their other ends with tabs, or threads emerging from the front compartment, so that they may be drawn back again into the front compartment.
Patent GB-1038726-A (GB)
Title: A method for producing copolymers
IPC: C08F255/00
Filed: 1963-09-18
Abstract: 1,038,726. Polyolefin graft polymers. CHISSO CORPORATION. Sept. 18, 1963 [Sept. 18, 1962], No. 36797/63. Heading C3G. A homo- or co-polymer of an olefin containing a tertiary carbon atom is hydroperoxidized and then contacted with a liquid vinylidene compound and a solvent therefor, together with water and a lower valent compound of a polyvalent metal, thereby forming a graft polymer. The starting polyolefin is preferably hydroperoxidized by exposing it to ultra-violet light in the presence of oxygen and a light sensitizer, e.g. benzophenone or acetophenone. Vinylidene monomers specified are vinyl acetate, acrylic and methacrylic esters, styrene, vinyl pyridine, vinyl pyrrolidone, glycidyl acrylate and methacrylate and glycidyl vinyl urethane. As solvents therefor there are specified ketones, alkanols, ethers and cyclic hydrocarbons. Polyvalent metal compounds specified are ferrous, cerous, chromous and cobaltous salts. The Examples describe grafting: (1 and 2) glycidyl methacrylate on to a film of polypropylene, (3) glycidyl methacrylate on to a polypropylene monofilament, (4) methyl methacrylate on to a polypropylene film, (5) glycidyl acrylate on to a polypropylene film, (6) methyl methacrylate on to a polybutene-1 film and (7) methyl methacrylate on to an ethylene-propylene copolymer film.
Patent GB-1457209-A (GB)
Title: Method for manufacturing wood material boards
IPC: C08L97/02
Filed: 1974-08-21
Abstract: 1457209 Chipboard G A SERLACHIUS OY 21 Aug 1974 [21 Aug 1973] 36820/74 Heading C3N A method for the manufacture of wood materials with urea as a bonding agent is characterized in that the urea is pre-reacted in the presence of a catalyst, the catalyst being a water-soluble salt of a non-precious metal, or a water soluble mono- or disaccharide or an amine or a mixture of these, whereafter the prereacted mixture is sprayed on to the raw wood material and the material pressed into boards at 180-250 C. The term "pre-reacted" is a term applied to urea which has undergone partial decomposition and internal reactions between the products thereof, to the point where liberation of ammonia commences. The "non-precious metal" is defined as those elements in the electrochemical series which have a negative electrode potential against the H-electrode and a suitable salt of such a metal is MgCl 2  or ZnCl 2 . A sulphite waste liquor containing water soluble mono- or disaccharide may be used as the catalyst whilst suitable amines that may be used are triethylene diamine, triethylamine tetramethylene diamine, hexamethylene diamine and hexamethylene tetramine.
Patent GB-625147-A (GB)
Title: Improvements in or relating to circuit-arrangements for the frequency stabilization of modulated electrical oscillations
IPC: H03B5/04
Filed: 1946-12-16
Abstract: 625,147. Automatic frequency control. PHILIPS LAMPS, Ltd. Dec. 16, 1946, No. 36999. Convention date, Oct. 14, 1943. Drawings to Specification. [Class 38 (iv)] The usual frequency-control circuit, comprising an oscillatory source feeding a discriminator the output voltage of which controls a reactance valve associated with the source, reduces frequency drift in the ratio 1/1+ α#, where # is the control voltage produced by the discriminator per kilocycle of drift, and α is the frequency change produced by the reactance valve per volt of control voltage. The invention consists in balancing out this residual error, insofar as it is produced by temperature changes, by employing a frequency discriminator whose drift of resonance frequency with temperature bears the ratio 1/α# to the uncontrolled drift of the oscillator with temperature. If the oscillator feeds the discriminator directly, the two drifts should be in opposed sense. If the oscillator feeds a mixer where it is heterodyned with a stable auxiliary source, and the difference frequency is fed to the discriminator, the two drifts should be in the same or opposite sense according as the local source has a higher or lower frequency than the controlled oscillator. The resonance frequency of the discriminator is given the necessary temperature co-efficient by design of the reactances, e.g. by utilizing condensers having dielectrics with high positive or negative temperature co-efficients of capacity.
Patent GB-1430554-A (GB)
Title: Sutures having long lasting ermicidal properties
IPC: A61L17/00
Filed: 1974-08-22
Abstract: 1430554 Germicidal sutures SUTURES INC 22 Aug 1974 37008/74 Heading A5E A method of providing a suture with longlasting germicidal properties comprises providing a suture of a synthetic polymer, treating the suture to provide the polymer with nucleophilic groups, contacting the treated suture with a first aqueous solution of a germicidal salt including a germicidal ion, and further contacting the suture with a second aqueous solution of germicidal salt including a germicidal ion having a change opposite to that of the germicidal ion of the first salt, the ions being capable of reacting to form a highly insoluble germicidal precipitate on and/or in the suture. The nucleophilic groups can be provided by flame treatment, electromagnetic radiation, electron bombardment, surface coatings and graft copolymerisation. The first germicidal salt is preferably a cationic antibiotic e.g. gentamycin and polymixin B while the germicidal anion is preferably an antibiotic such as fumagillin, cephalothin and penicillins.
Patent GB-979044-A (GB)
Title: Improvements in or relating to electrical limit detecting means
Inventor: BIANCHI EDUARDO ALBERTO
IPC: G01R19/04
Filed: 1963-09-20
Abstract: 979,044. Electric measuring systems. GENERAL DYNAMICS CORPORATION. Sept. 20, 1963, No. 37025/63. Heading G1U. In an arrangement for indicating whether or not a system parameter, such as pressure, temperature or neutron flux, lies within prescribed limits there is included a transducer 10 which generates an A.C. signal proportional to the parameter and a circuit 20 containing two branches 21, 22, to each of which the signal is applied via the transformer 15. Each branch includes a capacitor, 35 or 45, and the parameter signal is applied across each capacitor via diodes 31 and 33. Reference signals of opposite phase to the parameter signal are taken from the potentiometers 25, 26 supplied from a source 18, and are applied across the capacitors via the diodes 32,34,these diodes only passing current if the voltage from the reference exceeds the voltage on the capacitors due to the parameter signal. The upper limit reference is supplied from the potentiometer 25, the lower limit from the potentiometer 26. If the parameter lies within the prescribed limits, the diodes 32 and 33 conduct, providing pulses in the outputs of the transformers 40 and 50 which are fed to a double beam C.R.T. 60. If one of the series of pulses disappears from the screen (to be replaced by a straight line) this indicates that the corresponding limit value has been exceeded. Alternative arrangements are described which arrange for the two limits to be represented by opposite polarity pulse trains, and for pulses to appear only when the limits are exceeded (rather than the opposite as described above) (Figs. 4, 6, 7, 8 not shown). An alternative indicating arrangement, wherein the pulses from the transformers 40, 50 control the operation of a flip flop so that this continuously changes state if the parameter lies within the correct range, but sticks in one condition if not, is also described (Fig. 2 not shown).
Patent GB-802961-A (GB)
Title: Improvements in operating gear for ships' davits
Inventor: THOMSON WILLIAM GILBERT
IPC: B63B23/04
Filed: 1955-12-28
Abstract: 802,961. Davits. DAVIT DEVELOPMENTS, Ltd. Dec. 14, 1956 [Dec. 28, 1955], No. 37045/55. Class 115. A gravity davit has starter means including a rope, chain or other flexible power transmission operable to displace the davit arm or arms positively from the normally stowed position to overcome initial inertia or other obstruction to outboard movement of the arm(s) by gravity. In Fig. 1 the davit arm 1 has a hook 5 to which is attached a cable 2 which passes around a pulley 14 to a winch 3 having a winding handle 9. In Fig. 2, the cable 2 is attached to a lever 17 which is supported on a fixed pivot 18 and engages a roller 6 on the davit arm so that a pull on the cable turns the lever to position 17A causing the arm to move to position 1A and then falling by gravity to the fully luffed position 1B. Embodiments in which 2 sets in the manner of an endless cable are described. In Fig. 7 a davit normally housed on the ship's centre line has a cradle 19 with rollers 20, 21 engaging in tracks 15 which slope downwards towards the ship's side and are shaped so that when the cradle is drawn down the tracks by a pull on the cable 2, the davit approaches the position 1B, the cradle rocks about the rollers 21 and the rollers 20 rise up a cam-shaped part of the track.
Patent GB-776017-A (GB)
Title: Automatic transmissions for motor road vehicles
IPC: F16H47/08
Filed: 1954-12-22
Abstract: 776,017. Band brakes. AUSTIN MOTOR CO., Ltd., and STUART, D. J. K. Dec. 7, 1955 [Dec. 22, 1954], No. 37107/54. Class 103 (1). [Also in Group XXIV] Two band brakes 30, 33 for an epicyclic change-speed gear (see Group XXIV) are actuated through levers 77, 76 from pistonrods 75, 74 rigid with a pair of interconnected pistons 73. Both brakes are released when the pistons are held at mid-stroke by the springs 81, 86, and engagement of brakes 30 or 33 is produced by the admission of pressure liquid to ports 60, 59 respectively, the arrangement being such that both brakes cannot be engaged simultaneously.
Patent GB-1480586-A (GB)
Title: Radar systems
IPC: G01S13/70
Filed: 1974-07-17
Abstract: 1480586 Radar PLESSEY CO Ltd and I D LONGSTAFF 17 July 1974 [4 Aug 1973] 37122/73 Heading H4D In a radar, and in particular the altimeter described in Specification 1,480,587, a range gate is used, enabled by gating pulses produced by a comparison between a ramp voltage and the output of an integrator fed with the output of the range gate, the range gate producing first and second signals when the echo pulse is respectively not acquired and is acquired and said first and second signals charging the output of the integrator by respective first and second amounts, the second amount being larger than the first and of opposite sign thereto. In the system described the first amount is one positive or increasing unit, corresponding to an increase of 0À025 ft. altitude and the second amount is five negative or decreasing units, corresponding to a decrease of 0À125 ft. altitude. Such an arrangement is said to decrease the systems sensitivity to noise. A circuit for the gate using a bi-stable pair of cross-connected AND gates is shown.
Patent GB-514148-A (GB)
Title: Improvements in or relating to manicure or toilet articles
IPC: A45D34/00
Filed: 1938-12-21
Abstract: 514,148. Manicuring appliances. LEHMANN, H. Dec. 21, 1938, No. 37175. [Class 81 (ii)] A toilet article comprises a base. having an upstanding portion b (Fig. 1) provided with recesses c for the fingers of the user, the recesses being separated by portions d, and also with recesses e to receive the thumbs. Drawing slots f may be made in the base to receive an elastic band g adapted to secure a bottle of polish such as h which carries a brush attached to its cap. The article may be provided'with a clip or container to hold -various bottles. This may take the form of two gripping portions land m (Fig. 2) the portion m having an extension which is received in a casing o and is outwardly pressed by a spring n.
Patent GB-894075-A (GB)
Title: Improvements in insulated cable
IPC: H01B9/02
Filed: 1960-10-31
Abstract: 894,075. Electric cables. ANACONDA WIRE & CABLE CO. Oct. 31, 1960 [Dec. 29, 1959], No. 37326/60. Class 36. An electric cable having a plurality of tubular conducting layers surrounding the core formed by providing pairs of wrapping tapes with conductive coatings on adjacent sides only, is characterized in that the conductive coatings do not extend to the edge of the insulating strips, but leave margins, which form insulating gaps between the edges of the coating on consecutive turns of one tape, the gaps being bridged by the conductive coating of the other tape. In the cable of Fig. 1, the conductor assembly 11 is first surrounded by an uncoated insulating layer 19, of paper, polyethylene, polyethylene terephthalate or rubber, possibly saturated with oil. Alternatively a tape with its conducting coating facing the conductor, may be used. Gaps 14 are left between consecutive turns to prevent the tapes buckling when the cable is bent. A second layer of tape 12 is formed having a thin conducting layer 15 of aluminium or other metal or non-metal foil, bonded to the tape 12 by an adhesive 16, or applied as a spray or by evaporation methods in vacuo, and covering only part of the tape, leaving insulating margins 17, 18. A third layer of tape 22 is wound having a part-covering layer of conducting material 15, but with the conductive coating towards the conductor 11, and so positioned that the non-conductive gaps 14 are bridged, and the conductive coatings of the two layers of tape combine to form a continuous conductive cylindrical layer. This process can be repeated, forming a second conductive layer, or an intermediate layer of non-conducting strip can be wound (Fig. 2, not shown) to increase the length of the leakage path 24. A discontinuity can be formed in a conductive layer, by furnishing the outward facing conductive tape with a non-conductive portion extending slightly more than once round the cable, and wrapping round this an inwardlyfacing conductive tape with a smaller non- conductive portion, positioned above the adjacent non-conductive regions of the two consecutive turns of the inner tape (Fig. 5, not shown).
Patent GB-1324204-A (GB)
Title: Cord-like products having a covering comprising a thermoplastic material having a preferential direction of splitting
IPC: B29C48/05
Filed: 1971-08-09
Abstract: 1324204 Splittable covering materials KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE AG 9 Aug 1971 [18 Aug 1970] 37361/71 Heading B5A [Also in Divisions C3 and H1] Cord-like or tubular products are covered with a polymeric material having a preferential direction of splitting being a direction in which the material has been worked comprising plasticized PVC and polyethylene which is incompatible therewith, the polyethylene being present as a separate phase which has crystallized out from a melt of the material on cooling. The products may for example be electrical conductors coated with the material by extrusion coating or a number of such arranged side by side and joined by the splittable material for easy separation. The polyethylene forms 2-30% of the mixture.
Patent GB-790526-A (GB)
Title: Direction finding system
IPC: G01S1/02
Filed: 1955-12-30
Abstract: 790,526. Radio direction-finding. STANDARD TELEPHONES & CABLES, Ltd. Dec. 30, 1955 [Jan. 5, 1955], No. 37413/55. Class 40 (7). The invention relates to an adjustable bearing marker for the cathode-ray tube display of a radio direction-finder of the kind in which the deflection system of the tube is rotated in synchronism with rotation of the aerial directive pattern and the amplitude of the deflecting signal is dependent on the amplitude of the aerial output. Such a direction-finder produces indications such as that shown at 21 (Fig. 2) and due to a number of factors, including irregularities due to noise, parallax, and inaccuracies in the deflection system it is not possible to obtain an accurate bearing value by reference to a scale, as shown, round and in front of the tube screen. According to the invention an adjustable electronic marker is produced consisting of a pair of sharp additional deflections 22 and 23; these may be moved relative to the pattern 21 until they occur at the maxima thereof and the true bearing read off from a scale on the adjustment device. In one arrangement the direction-finder aerial 2 is rotated by motor 9 which also drives deflection coil 4 round the neck of display tube 6. The signals from the aerial are fed to receiver 3 whose output controls the amplitude of the deflection signal fed to coil 4. To produce the bearing marker pulses a non-magnetic disc 15 having magnetic inserts 16, 16<SP>1</SP>, is also driven by motor 13 synchronous with motor 9. This disc co-operates with magnetic circuit 17 carrying pick-up coil 18. The output of the coil 18 is fed to the deflection coil 4 to produce one of the indications 22, 23, whenever the magnetic inserts passes through the gap in the circuit 17. The unit 17, 18 is mounted for angular rotation round the disc 15 and can be adjusted in position by means of a manual control. When it is so positioned that the pulses 22, 23 coincide with the ends of the direction-finder pattern the bearing can be read off from scale 19 and index mark 20. Any of the usual means for resolving bearing ambiguity may be incorporated and a fixed aerial system co-operating with a goniometer may be substituted for the aerial described.
Patent GB-943240-A (GB)
Title: Improvements in or relating to cable or like binding clips
Inventor: EMERY EDGAR FRANK
IPC: B65D63/10
Filed: 1960-11-01
Abstract: 943,240. Cable clips. INSULOID MANUFACTURING CO. Ltd. Oct. 9, 1961. [Nov. 1, 1960], No. 37440/60. Heading H2C. [Also in Division E2] A cable or like binding clip comprises an elongated tongue portion 11a, a head portion 11b integral with one end of the tongue portion 11a, adapted to receive the other end of the tongue portion 11a and means 12 which allows the tongue portion 11a to be drawn through the head portion 11b in one direction but not the other. In the embodiment shown in Fig. 1, the mean 12 comprises a pawl 12a connected to the head portion 11b by a thin web so that it will bend to allow insertion of the tongue portion. The pawl 12a and tongue 11a have serrations which help to prevent withdrawal of the tongue portion 11a. The clip is preferably moulded from nylon but polythene or polypropylene could be used. An alternative embodiment having a separate spring clip in place of the pawl 12a is described in the Provisional Specification.
Patent GB-934423-A (GB)
Title: Apparatus for classifying solids
IPC: B07B7/01
Filed: 1959-11-04
Abstract: 934,423. Separating solids. POLYSIUS G.m.b.H. Nov. 4, 1959 [Nov. 7, 1958], No. 37464/59. Classes 23 and 117. Solids entrained in a gas stream are separated according to grain size and specific gravity by decelerating the stream in a diffuser 1, Fig. 1, the finer particles being decelerated by the decelerating stream more than the coarser particles, and then deflecting the gas stream to carry away the slower moving finer particles and allow the faster moving coarser particles to continue. The gas stream may be deflected either by a second air stream as indicated at 2 or by a suction fan. The diffuser may be vertical or horizontal. As shown in Fig. 4, a diffuser is of annular conical shape, material to be classified is introduced at 7 and air at 8, deflection of the air stream may be induced by the suction of a dust separator connected to a chamber 10 and there is an adjustable baffleplate 14 to improve the fineness of separation. The diffuser walls may be interconnected by spiral deflector walls, alternatively the airsolid mixture may be blown into the diffuser tangentially. In a further embodiment, similar to that shown in Fig. 4, the diffuser rotates about its cone axis and centrifugal force aids the separation. Fig. 7 shows a diffuser 6, which may be designed to rotate, and indicates a deflecting air stream from between walls 12 and 13. The diffusers may be divided by partitions 5, e.g. as shown in Fig. 3, so that the angle of divergence of the component diffusers will be lessened. Another diffuser comprises a pair of circular discs, the material and air entering between them at the centre and issuing from the rims. A curved divergent duct forms a further diffuser. The separating efficiency is determined by controlling the volume of entraining gas and, if the diffuser rotates, by varying its speed of revolution.
Patent GB-1058159-A (GB)
Title: Organosilicon polymers
Inventor: BEATTE JAMES HUGHES
IPC: C08G77/06
Filed: 1964-09-14
Abstract: Siloxane-oxyalkylene copolymers are made by reacting an alcohol of the formula H(OCnH2n)mR1, in which R1 is a radical derived from R1H wherein the H is a hydrogen atom capable of reacting with a cyclic oxide, n is 2, 3 or 4, and m is a positive integer, with a siloxane of the general formula <FORM:1058159/C3/1> wherein R is a monovalent hydrocarbon radical, with or without substituents, a, b, c, d, e, f and g are each zero or a positive number, a + b + c is a positive number, d + e is not less than 1, c + e is a positive number and f + g = 2a + b + c + 2, provided that if c = 1, a + b + e + f is a positive number.  The reaction is preferably effected in the presence of a catalyst, e.g. an acid, base, Friedel-Crafts halide, or a metal salt or complex, and at 20 DEG  to 140 DEG  C. in a solvent, such as an aromatic hydrocarbon. In a typical Example (1) a toluene solution of oxyalkylated iso-octanol was refluxed to remove water by azeotropic distillation, after which stannous octoate and MeSi[O(SiMe2O)4(MeHSiOSiMe3)3 were added thereto and the mixture refluxed for 5 hours to yield, after removal of solvent, a pale, straw-coloured liquid copolymer.  Uses.-As stability additives in making polyurethane foams in known manner from polyesters, polyesteramides or polyethers containing at least 2 isocyanate-reactive groups per molecule, organic polyisocyanates and water and/or a low-boiling point liquid, numerous examples of these reactants being given.
Patent GB-1482571-A (GB)
Title: Hydrostatic transmission
IPC: F04B49/00
Filed: 1974-08-27
Abstract: 1482571 Hydrostatic transmission control CESSNA AIRCRAFT CO 27 Aug 1974 [4 Sept 1973] 37477/74 Heading E2W A control system for a motor vehicle hydrostatic transmission having a variable displacement swash-plate pump 12 supplying pressure liquid to a fixed or variable displacement motor 30 comprises a small fixed displacement engine driven pump 16 supplying liquid at a pressure determined by a fixed or variable orifice 23 to a pump displacement adjusting servo 20 which increases pump displacement against the bias of a spring 24. As engine speed increases the output of the pump 16 increases to increase the pressure in the servo 20 and thus increase pump displacement. As shown the orifice 23 comprises tapered slots in the servo piston 22 and thus the orifice size increases with increasing pump displacement to provide a predetermined engine speed-pump displacement characteristic. An additional servo 40 responsive to the supply pressure 28 of the pump 12 decreases pump displacement when the load on the transmission increases. Alternatively the swash plate pivots 10 may be offset from the pump axis. A reversing valve may be provided between the pump 12 and motor 30. In a modification the variable orifice 23 is replaced by a fixed orifice in the conduit 18 between the pump 16 and servo 20.