baber/WOPTO huggingface dataset:
Patent GB-799881-A (GB)
Title: Bi-stable transistor circuit
IPC: H03K3/286
Filed: 1954-12-31
Abstract: 799,881. Transistor two stable state circuits. SYLVANIA ELECTRIC PRODUCTS, Inc. Dec. 31, 1954 [Dec. 31, 1953], No. 37865/54. Class 40 (6). A source of constant current 26a is connected to the emitter 12 of a transistor 10 having a load 22 in the base lead and an auxiliary circuit 36 or 40 arranged across the current supply so that the main circuit passes either high or low current, the circuit being triggered by pulses applied to the base. The auxiliary circuit 36, Fig. 3, operates so that the low current positive resistance of the input circuit intersects the negative resistance of the input circuit of the main transistor 10, Fig. 4 (not shown). In a similar manner, the low current positive resistance of the transistor 10 intersects the negative resistance of circuit 36. As a result either transistor 10 or 10a passes most of the current from source 26a while the other transistor 10a or 10 passes only a small current. It is stated that a higher rate of triggering and resetting is possible, Fig. 5 (not shown). In a modification, Fig. 6, a diode 40 comprises the auxiliary circuit, passing heavy current when the emitter is passing low current and vice versa, Fig. 7 (not shown).
Patent GB-939243-A (GB)
Title: New metal-complex monoazo dyestuffs containing halogenotriazine groups
Inventor: BERRIE ALISTAIR HOWARD
IPC: C09B62/095
Filed: 1959-11-09
Abstract: The invention comprises chromium and cobalt complexes of monoazo compounds which contain from 1 to 4 sulphonic acid groups and which, in the form of the free acids, are represented by the formula <FORM:0939243/IV(a)/1> wherein A stands for an aryl radical carrying the carboxylic group in ortho position to the azo group, E stands for the radical of a coupling component carrying a hydroxyl, amino or enolizable ketone group in ortho position to the azo group, and one X stands for a group of the formula <FORM:0939243/IV(a)/2> and the other X stands for a hydrogen atom or a group of formula (2) wherein m stands for an integer, Y stands for a chlorine or bromine atom and R stands for an alkyl, substituted alkyl, aryl or substituted aryl group, and a process for the preparation thereof which comprises treating a monoazo compound which contains from 1 to 4 sulphonic acid groups which in the form of the free acid, is represented by the formula <FORM:0939243/IV(a)/3> wherein A stands for an aryl radical carrying the carboxylic acid group in ortho position to the azo group, E stands for the radical of a coupling component carrying a hydroxyl, amino or enolizable ketone group in ortho position to the azo group and one X1 stands for a group of the formula -NHCm-1H2m-1 and the other X1 stands for a group of the formula -NCHm-1H2m-1 in being an integer, with a dihalotriazine of the formula <FORM:0939243/IV(a)/4> wherein Y stands for a chlorine or a bromine atom and R stands for an alkyl, substituted alkyl, aryl or substituted aryl group and with an agent yielding chromium or cobalt. Monoazo compounds for use in the process may be obtained by diazotizing an o-carboxy arylamine and coupling with a coupling component of the formula HE-NHCm-1H2m-1.  Representative of the o-carboxylamines specified are anthranilic acid and anthranilic acids substituted with chlorine, bromine, nitro, sulpho, acetylamino, methoxy, benzoylamino, trifluoromethyl, sulphamyl, N,N-dimethylsulphamyl and methyl sulphonyl groups, 2-amino- and 2-amino-5-nitro terephthalic acids and 2-amino-3-naphthoic acid. Among the many coupling components of the formula HE-NHCm-1H2m-1 specified are substituted pyrazolones, aminonaphthol sulphonic acids, aminophenols, dihydroxyphenols, ketomethylene compounds, e.g. acetoacetarylides, m-phenylene diamines, naphthylamine sulphonic acids.  Nitro groups where necessary may be reduced to amino groups with aqueous sodium sulphide and acylamino groups may be hydrolysed with aqueous alkali or acid.  The metallizing treatments may be carried out in the usual manner.  The products of the invention are employed to colour cellulose textile materials, e.g. natural or regenerated cotton and they are preferably applied in conjunction with a treatment with an acid binding agent.  They may be used in printing pastes containing urea in large amounts.  Specification 847,635 is referred to.
Patent GB-1449852-A (GB)
Title: Control of fluid pumps
IPC: G05D16/20
Filed: 1973-08-10
Abstract: 1449852 Centrifugal pumps J D COPPEN 8 Aug 1974 [10 Aug 1973] 37932/73 Addition to 1376622 Heading F1C [Also in Division G3] The control system of the Parent Specification, in which the output pressure of a centrifugal pump 1 is controlled in response to a reference (set at 17) which is automatically adjusted if the inlet pressure is below a further reference (set at 14) to prevent cavitation or collapse of a soft inlet hose, is modified in that the pressure error signal is now only a component of a control signal for adjusting the speed of the pump. As shown, the pressure error signal at 18 is combined at 19 with the reciprocal of pump speed from a tachometer 8 and unit 9; this is to linearize the system gain (pump pressure being a non-linear function of speed). The output of 19 is connected to proportional and integrating amplifiers 20, 21 whose sum, at 22, constitutes a speed reference with which the actual speed is compared at 23, any error causing adjustment of the drive engine 3 by servo 4, 5. In the Figures, 2 is a transmission unit, and 6, 7 are pressure transducers protected by resistors or pressure snubbers 10, 12 and relief valves 11, 13. In Fig. 3 (not shown), the inlet pressure transducer comprises two on/off pressure switches, one or the other being selected according to whether hose collapse or cavitation is the limiting feature, and which cause a step change in the delivery pressure reference. If the inlet supply is restricted the system cycles the pump speed between two values alternately. In a modification of this Fig. 4, (not shown) a pair of switches are connected to an integrator which either gradually increases, holds steady, or decreases the delivery pressure reference. In a further alternative Fig. 5, (not shown) a series of sequentially operated pressure switches progressively short circuit a resistor chain, for the inlet and/or the delivery transducers. Fig. 6 (not shown), illustrates various alternatives in the system, e.g. constant speed drive with variable speed transmission, any form of prime mover, and mention is made of the control system being digital electric, fluidic or in mechanical form. There may also be a vibrational or acoustic cavitation detector to reduce the speed if this becomes excessive.
Patent GB-951147-A (GB)
Title: Well fracturing
IPC: C09K8/62
Filed: 1961-10-24
Abstract: 951,147. Wells. DOW CHEMICAL CO. Oct. 24, 1961 [Oct. 26, 1960; Feb. 3, 1961], No. 38011/61. Heading E1F. In a process of well fracturing a substance is added to the fluid, before or during injection, to reduce the pressure drop or friction loss. The substance which may be a polymer of acrylamide, ethylene oxide, or monoalkinylaromatic sulphonate is added at the rate of 0À005 to 1À0% by weight. The fluid is aqueous and may contain sand, corrosion and foam inhibitors, or brine.
Patent GB-1376038-A (GB)
Title: Foamed plastics laminates
IPC: B29C44/34
Filed: 1972-08-18
Abstract: 1376038 Laminated foam panels IMPERIAL CHEMICAL INDUSTRIES Ltd 25 July 1973 [18 Aug 1972] 38623/72 Heading B5N In the manufacture of laminates by in situ foaming to form a rigid synthetic plastics core between facing layers, at least one of the facings is provided with minute perforations to permit the escape of air and gases from the foam through the facing. The perforations may be preformed or may be formed as the facing is fed to the laminating stage. Suitable facing materials are specified.
Patent GB-925696-A (GB)
Title: Improvements in concealed adjustment mechanism for folding chairs
IPC: A47C4/50
Filed: 1960-11-10
Abstract: 925,696. Seats. M. I. THOMAS. Nov. 10, 1960, No. 38635/60. Class 52 (2). In a tubular aluminium folding chair, in which an arm rest 17 has an adjustable connection at a common pivot 12 of front 10 and back 11 by frames to vary the inclination of a backrest about its pivotal connection to the seat, a steel tube 19 is a close fit in the arm-rest tube and is formed with internal projections 22, 23 and 24 for engagement with lug plate 25. The tube 19 is of rolled sheet steel and has end members 29, 30 to prevent the lug plate 25 from tearing the ends 31, 32 of the slot in the aluminium tube. It is secured by a rivet 33 and is slotted to provide smooth guideways 20 for the lug plate. U.S.A. Specification 2,920,686 is referred to.
Patent GB-1438007-A (GB)
IPC: C01B21/26
Filed: 1973-08-16
Abstract: 1438007 Oxidation of ammonia AE & CI Ltd 16 Aug 1973 [17 Aug 1972] 38674/73 Heading C1A Ammonia is oxidized to nitric oxide by air in the presence of a cobalt (II, III) oxide containing catalyst at a temperature within the range 600‹ to 950‹ C., the catalyst being regenerated by periodically adding oxygen to the reaction mixture such that the residual oxygen partial pressure in the bed is increased while the temperature of the bed remains substantially constant. The oxygen may be added in the form of substantially pure oxygen or it may be in the form of an oxygen enriched inert gas.
Patent GB-1276899-A (GB)
Title: Shaded pole electromagnet
Inventor: DEFOREST WESLEY VERNE
IPC: H01F7/12
Filed: 1969-08-01
Abstract: 1276899 Electromagnets; electromagnetic relays ROBERTSHAW CONTROLS CO 1 Aug 1969 [2 Aug 1968] 38768/69 Headings H1N and H1P An electromagnet, which may operate a relay or a valve, comprises a U-core 10 of magnetic material (Fig. 1) having a single leg 15, a yoke 16, and a leg 22 with respect to which other legs 20, 24 are symmetrically disposed; mounted on a non-magnetic frame 32 (Fig. 2) with an A.C. energized winding 40 on leg 15, on which, as fulcrum, armature 42 loaded by spring 44 is held by leaf spring 48; the armature operating e.g. relay contacts or a valve and having protrusion 46 at an end to firmly contact the pole of leg 22 with equalized airgaps at poles of legs 20, 24. A copper shading ring surrounds leg 22 to prevent chattering.
Patent GB-919686-A (GB)
Title: Improvements in or relating to the manufacture of steroids
IPC: C07J5/00
Filed: 1961-10-31
Abstract: In a process for the preparation of 1-dehydro-6a -methylhydrocortisone which includes the steps of deketalising a 5a ,11b ,17a ,21 - tetrahydroxy-6b -methylpregnane-3,20-dione 3-alkylene ketal 21-acylate, dehydrating said 5a -hydroxy compound so obtained to produce 6a -methylhydrocortisone, and subjecting the latter compound to microbiological 1-dehydrogenation, the invention comprises the improvement which consists in effecting the deketalization and dehydration in one step by treatment of the said 3-ketal with a strong non-oxidising mineral acid in the presence of an inert solvent and subjecting the resulting solution of 6a -methyl hydrocortisone 21-acylate without isolation of the latter compound to microbiological 1-dehydrogenation to produce 1-dehydro-6a -methyl-hydrocortisone.  1-dehydrogenation may be effected with a microorganism of the genus Septomyxa. Specification 853,981 is referred to.
Patent GB-1144698-A (GB)
Title: Process for the manufacture of detergents containing sodium tripolyphosphate
IPC: C11D3/06
Filed: 1967-08-24
Abstract: 1,144,698. Detergents. KNAPSACK A.G. 24 Aug., 1967 [1 Sept., 1966], No. 39056/67. Heading C5D.  A detergent composition is obtained by spray drying a mixture of dry crystalline sodium tripolyphosphate of which at least a part has 17.0-22.7% by weight of water of crystallization. Detergent slurry may contain a total of 10-50% by weight sodium tripolyphosphate wherein the phosphate with the said water content may be at least 5% and preferably 50-100% of the total phosphate. Detergent slurry is preferably prepared at temperature ranging from 20‹ to 90‹ C.
Patent GB-1261415-A (GB)
Title: Machine for shrinking and finishing woven textile fabrics
IPC: D06C21/00
Filed: 1969-08-06
Abstract: 1,261,415. Shrinking fabric. CLUETT PEABODY & CO. Inc. 6 Aug., 1969 [3 March, 1969], No. 39345/69. Heading D1S. A machine for compressively shrinking a continuously moving woven textile web A comprises a pair of rolls 9, 10 arranged in substantially horizontal spaced parallel relationship, an idler roll 11 offset from the rolls 9, 10 in parallel therewith, an endless belt 8 carried on the rolls 9, 10, 11 and an oscillatable member 12 disposed between the rolls 9, 10 and provided with an arcuate face adapted to displace, in the direction of the roll 11, that portion of the belt 8 extending between the rolls 9, 10. Preferably, the member 12 comprises a semicylindrical segment extending across the full width of the rubber belt 8 and which may be steam-heated. The segment 12 is mounted on a shaft 13 and is provided with an arm 14 having a pair of rollers 15 rotatably mounted thereon. The rollers 15 engage a set of mated driven cams 16, 17 which are 180 out of phase with each other to oscillate the segment 12, e.g. with an amplitude of 2 and a frequency of 300-400 cycles per minute. This oscillation irons the contacting face of the fabric A whilst it is shrunk. Before enter the shrinking machine 6, the fabric A may be sprayed with water at 5 and after shrinking, the fabric passes through a dryer 7 and is plaited into a cart.
Patent GB-1490600-A (GB)
Title: Soap dispenser
IPC: A47K5/12
Filed: 1975-09-25
Abstract: 1490600 Metering dispenser STEINER CO INTERNATIONAL SA 25 Sept 1975 [7 Oct 1974] 39395/75 Heading B8N A liquid soap dispenser comprises a support bracket 2 provided with an actuating mechanism 5, a feeding chamber 10 removably attached to the bracket and a pumping device operable by the actuating mechanism when the chamber is in position. The bracket 2 has guides 9, Fig. 2, which engage with lugs 12 on the chamber. A refillable or disposable soap cartridge 17 is mounted on the chamber. The mouth 16 of the cartridge discharges into the chamber 10 and the soap is dispensed by a handle 7 operating a lever arm 5a on a deformable cup 30. The cup 30 is filled on release of the handle by suction from a conduit 28 controlled by a diaphragm operated valve 27. When the cup is full its contents are discharged by pulling the handle 7 to squeeze the cup to force liquid soap along conduits 34 via a diaphragm valve 35 to an outlet 39.
Patent GB-1110786-A (GB)
Title: Polymer extrusion process
Inventor: ALDRED LESLIE
IPC: B29C48/04
Filed: 1964-09-29
Abstract: 1,110,786. Extruding polymeric ribbons; pelletizing. IMPERIAL CHEMICAL INDUSTRIES Ltd. 25 Aug., 1965 [29 Sept., 1964], No. 39587/64. Heading B5A. In a method of pelletizing thermoplastic polymeric material a ribbon of the polymer which is to be fed to cutter 11 is formed by extruding a plurality of rods 2 on to a conveyer 4, cooling them and then squeezing them by means of a plain, fluted or ribbed roller 6 to make adjacent rods contact and adhere to one another. Using a ribbed roller, contact between the rods is intermittent, Fig. 6 (not shown), and that using a plain roller is continuous, Fig. 5 (not shown). A ribbed and a plain roller may be used together. The polymer may be forced from container 1 by nitrogen pressure and die head 3 comprises at least two parallel rows of orifices, the orifices in one row being staggered with respect to those in adjacent rows, Fig. 3 (not shown). The rods 2 fall under their own weight on to conveyer 4 and attenuate to between <SP>9</SP>/ 10  and 1/3 of the diameter of the orifices. The rods are cooled by water jets 5 before being rolled and by passage through a water trough 8 thereafter. Conveyer 4 is cooled by water jets 12 and partial immersion in trough 8. Air jets 13 remove water from conveyer 4 and air jets 9 remove water from the ribbon. Conveyer 4 may be replaced by a drum. The preferred thermoplastic polymer is nylon, e.g. polyhexamethylene adipamide or polycaprolactam but also mentioned are polymethyl methacrylate, polyethylene, polypropylene, vinyl chloride and polyethylene terephthalate.
Patent GB-1125782-A (GB)
Title: Fastener with snap-on captive locking ring
IPC: F16B39/10
Filed: 1965-09-16
Abstract: 1,125,782. Locking screws and nuts; screw sockets. ROSAN ENG. CORP. 16 Sept., 1965 [16 Sept., 1964], No. 39638/65. Heading F2H. A fastener for securing a component to a bored workpiece 19 comprises a cylindrical body 25 for insertion into the bore in the workpiece, the body carrying means such as a screwed bore or a screw-threaded stud for engaging the component and having a plurality of serrations 29 extending axially along part of its periphery, and a locking ring 30 which is held captive to the body even before insertion in the bore and has a plurality of internal axially extending serrations 33 engaging the serrations 29, the ring also having external serrations 32 which secure the fastener to the workpiece when forced into the material of the workpiece surrounding the bore by axial sliding movement of the ring relative to the body (Fig. 3). Various forms are described for holding the locking ring on the body, e.g. a projection 34 is provided on the inside of the locking ring to engage a groove or cavity on the outer surface of the body or vice versa.
Patent GB-398204-A (GB)
Abstract: 398,204. Coin or token freed voucherissuing machines. KNUBBE, F., Gentofte, Denmark. March 8, 1932, No. 6936. [Class 27.] A coin or paper money and a metal check or token inserted in the apparatus are subjected to impression or photo-chemical action so as to be recorded on a voucher to be issued and on a slip to be filed in the machine. In the form shown in Figs. 1 and 2, the coin and check inserted in neighbouring slots pass between inking rollers 111 and down shoots such as 112 to a table 113 where they lie on a paper strip 104. When the machine is operated, as by the releasing action of the check, impression stamps 117, 118 effect the coin and check impressions on this strip and on an overlying strip 105 after which a knife severs both strips and an ejector 119 descends upon the upper strip 105 tilts it and delivers it to the shoot 121 leading to the exit from the machine. A rod 120 then rises and violently tilts the table 113 so that the check is thrown against the inclined plate 125 and falls down shoot 126 to the same exit. The coin and the slip on which it is lying, meanwhile slide down the channel 123 and are stored in a chamber 124. The check may serve as a key for opening the coin slots and may be constructed so as to prevent withdrawal when once inserted. In order to ensure storage of the coins and slips in their correct relationship a folding and stitching device may be included this functioning to secure the slip around the coin before they pass to the filing chamber.
Patent GB-1401814-A (GB)
Title: Anti-reflection coating for the inner surfaces of cemented  lenses
IPC: G02B1/11
Filed: 1972-08-25
Abstract: 1401814 Anti reflection coatings ASAHI KOGAKU KOGYO KK 25 Aug 1972 39850/72 Heading G2J A cemented lens component comprises two optical elements cemented together by a cementing agent, one at least of the elements having a reflection-inhibiting coating on its cemented surface. The coating may be a single layer or two or more layers.
Patent GB-896664-A (GB)
Title: Improvements in or relating to a retaining clip for a pin such as a non-rotatable spindle
Inventor: LEACH LEONARD
IPC: F16B21/16
Filed: 1960-11-21
Abstract: 896,664. Stud and socket fastenings; clips; cotters. WHITWORTH GLOSTER. AIRCRAFT Ltd. Nov. 21, 1960, No. 39886/60. Classes 44 and 89(2). [Also in Group XXX] In the combination of a pin 4, a support 2 therefor and a retaining clip 6 by which the pin is held from rotational and axial movement relative to the support, the pin has an end portion 9 of non-circular cross-section, adjacent a portion of circular cross-section extending radially beyond the end portion, there being a radially extending shoulder 10 between the two portions, the support has adjacent an edge thereof, a hole 3 for the pin, and the clip 6 is of U-shape for fitting astride the edge of the support 2, one limb of the clip having a circular hole 7 therein to receive the adjacent portion of the pin and the other limb of the clip having a non-circular hole 8 therein shaped to receive only the end portion 9 of the pin, there also being movable means on the clip for restraining the clip from axial withdrawal of the pin from the support and the clip. As applied to a roller conveyer in which the pin 4 supports a freely rotatable roller 5, the movable means on the clip is provided by an integral spring tab 11 projecting into the path of the spindle 4 and engaging the latter as the spindle is inserted through the holes in the limbs of the clip.
Patent GB-1134094-A (GB)
Title: A device for regulating the feed of strips of material through a machine
IPC: H02P5/48
Filed: 1965-10-31
Abstract: 1,134,094. Automatic control of web feeds. N. WADDLETON (Spezialmeschinenfabrik Robert Giebeler K.G.) Oct.31, 1965, No.39972/65. Heading G3R. The speed of rollers 4 feeding a web of material 1 through a printing and/or perforating machine 6 is controlled by adjustments of a differential gear 16 in response to the phase difference between two electrical signals, one corresponding to the operation of a marker device and the other from a detector spaced from the marker. As shown, a perforator 6 acts as the marker, the perforations being detected photo-electrically at 8, but in an alternative system, Fig.2 (not shown) printed or magnetic marks are applied immediately after the feed rolls and are detected before the perforator. The object is to ensure accurate spacing of the perforations or marks.
Patent GB-925947-A (GB)
Title: Improvements in or relating to screwdrivers and other tools
IPC: B25B23/142
Filed: 1960-11-23
Abstract: 925,947. Screwdrivers; wrenches. GENERAL ELECTRIC CO. Ltd. Nov. 23, 1961 [Nov. 23, 1960], No. 40275/60. Class 61. A screwdriver, box spanner &c. comprises a handle 2 having rigidly attached thereto a shaft 1, a shaft 3 the free end of which is formed as a screwdriver or other tool, the shafts 1 and 2 being maintained in coaxial relation by a sleeve 5 and being connected together by a spring 4 or other resilient means which is deformed when a torque of a value exceeding a predetermined value is applied to the shaft 1, the deformation of the spring being felt by the user to indicate that the predetermined torque value has been reached. The spring 4 is a force fit over adjacent ends of the shafts 1 and 3; the end 3 is made of nylon and may be threaded so that it will screw into the end turns of the spring. A number of springs of different stiffness may be provided and stored in the handle 2 which is made of electrically insulating material. In a modification the spring is replaced by a rubber tube.
Patent GB-1021510-A (GB)
Title: Electrical circuits including bodies of glassy material
IPC: H01L45/00
Filed: 1962-10-25
Abstract: The following glass systems are used in semi-conductor switching diodes, the percentages given being for specific examples:  46% As, 16% Te, 38% I.  43% As, 28% Te, 29% I.  53% As, 43% Te, 4% I.  40% As, 48% Te, 12% Se.  30% As, 27.5% T1, 42.5% Se.  25% V, 71.5% O, 3.5% P.  24.6% V, 71% O, 3.4% P, 1.0% Pb.  24.4% V, 70.8% O, 3.4% P, 1.4% Ba.  53% As, 43% Te, 4% Br.  20.8% Na, 18.5% B, 9.0% Ti, 51.7% O.  all expressed in atomic per centages.  They are prepared by reacting the component elements or in the case of oxidic glasses the component oxides in sealed tubes by rotation in a tube furnace under specified conditions.