baber/WOPTO huggingface dataset:
Patent GB-1529422-A (GB)
Title: Process for producing acid polyester resins and powder coating products prepared from said resins
IPC: C08G63/16
Filed: 1977-02-02
Abstract: 1529422 Acid polyesters; epoxy resin coating powders LABOFINA SA 2 Feb 1977 [2 Feb 1976] 04244/77 Headings C3B and C3R Acid polyesters (A) are made by (1) forming a prepolymer (P) from dihydric alcohol(s) and acid(s) comprising by wt. #10% tetephthalic acid, #90% isophthalic acid, and #20% trimellitic acid or anhydride, and (2) reacting (P) with acid(s) comprising isophthalic acid. (P) has OH index 40-200. (A) has acid index 50-100, and may have functionality 2-3. A coating powder is made by reacting (A) with an epoxy resin (E), e.g. 20-40% wt. (A) may be reacted with 20-60% (E) and 20-60% wt. TiO 2 .
Patent GB-955791-A (GB)
Title: Transistorised transmitter for polar signals
IPC: H04L25/24
Filed: 1963-02-01
Abstract: 955,791. Transistor pulse circuits. STANDARD TELEPHONES & CABLES Ltd. Feb. 1, 1963 [Feb. 7, 1962], No. 4260/63. Heading H3T. A circuit for producing double current output signals comprises an input transistor of one conductivity type biased from a diode and feeding one of two series-connected transistors of the opposite conductivity type, the output being taken from the connection between the series transistors and the input for the other series transistor being taken from an impedance in the said connection. When the input signal applied through filter 18, 78 to the base of transistor 16<SP>1</SP> is negative the transistor is conductive. Accordingly transistor 30 is also conductive and the negative supply terminal 34<SP>1</SP> is connected through filter 40, 42 to the output terminals 100a, 100b. The current through resistor 53 renders transistor 60<SP>1</SP> non-conductive. When the input signal is positive, transistors 16<SP>1</SP> and 30<SP>1</SP> are not conductive but current flows through resistor 72, the base-emitter path of transistor 60<SP>1</SP> and the load to render transistor 60<SP>1</SP> conductive so that the positive supply terminal 70<SP>1</SP> is connected to the load. A resistor 38 may be adjusted to compensate for the current which flows through resistors 72 and 53 to the load when transistor 30 is conductive. Diodes 80 and 84 protect the circuit against surges when the load is inductive, diode 75<SP>1</SP> limits the reverse input voltage to transistor 16<SP>1</SP> while diode 82 provides a high resistance bias path for transistor when it is non-conducting and a low resistance path when it is conducting. Transistors of the opposite conductivity type may be used (Fig. 1, not shown) and an inverter stage may precede stage 16<SP>1</SP> (Fig. 3, not shown). A balanced arrangement of inverting and non- inverting circuits may be connected at each end of a balanced line L1, L2 (Fig. 4) between a telegraph input circuit I and the receive relay R.
Patent GB-401929-A (GB)
Title: Improvements in or relating to stacking devices for letters, signatures and the like
IPC: B65H15/00
Filed: 1933-02-13
Abstract: 401,929. Stacking letters &c. POLLAK, J. E., 20, Holborn, London.- (Telephon-Apparat-Fabrik E. Zwietusch & Co., Ges. ; 6, Salzufer, Charlottenburg, Berlin.) Feb. 13, 1933, No. 4381. [Class 100 (i).] Apparatus for stacking letters, signatures or the like received, for example, from a sorting device comprises a guideway 3, a stacker member adapted to charge the letters into a container 10, and stop means which when the container is removed, come into action automatically to retain the letters on the guideway. The stop-plate 6 is hinged at 5 and urged by a spring 7 into the position shown dotted where it prevents letters leaving the guideway 3. An oscillating stacker-member 9 pivoted to the container 10, engages a spring-controlled latch 8 on the stop-plate 6 and moves the plate to inoperative position as the member 9 moves into position to receive a letter or letters from the guideway 3. As the member 9 moves to stacking position, the plate 6 returns to its operative position. During the removal of the container 10, the plate 6 is in its raised position, and remains so until the container is replaced. The stacker-member 9 is operated against the action of springs 42, 43 by a roller 12 on a lever 19 connected by an arm 25 to a rod 27 reciprocated from a cam 28. The charged containers 10 may have adjustable pins which, when the containers are placed on appropriate conveyors, cause them to be directed to definite receiving stations.
Patent GB-748939-A (GB)
Title: Improvements in and relating to heat exchanger apparatus
Inventor: BROWN FRED
IPC: F22D1/06
Filed: 1953-02-17
Abstract: 748,939. Tubular heat-exchangers. SENIOR ECONOMISERS, Ltd. Feb. 17, 1954 [Feb. 17, 1953], No. 4393/53. Class 64(3). A duplex flow economiser comprises parallel tube lengths arranged in vertical rows and so interconnected by bends welded or otherwise secured to the tube ends that in each row, tube lengths of one water flow path alternate with those of the other flow path, alternate bends at each end of the row being inclined in opposite directions to a plane containing the row so as to clear each other: The drawing shows an end view of three tube rows each having alternate tubes e.g. 3, 5, interconnected by a bend d which is inclined in a direction opposite to the bend e which interconnects the tubes of the other series in the row, e.g. tubes 4, 6, this arrangement continuing through the row.
Patent GB-894932-A (GB)
Title: Device for rewinding webs of paper or the like
IPC: B65H23/18
Filed: 1959-02-09
Abstract: 894,932. Unwinding and winding webs. JAGENBERG-WERKE A.G. Feb. 9, 1959 [March 27, 1958], No. 4419/59. Class 100(1) An apparatus for rewinding webs of paper or the like, in which the unwind and rewind rolls 13, 1 are each operated by a peripheral drive, is characterised in that the rolls are connected by a positive non-slipping transmission device 20 --including a continuously variable belt and pulley device 21 and a differential gear 22, so that the major part of the power is transmitted without slip, while a smaller part of the total power is transmitted through the belt and pulley device 21 and is superimposed on the transmission carrying the major part of the power.
Patent GB-1143914-A (GB)
Title: Combined condenser mirror and light source
IPC: H01K1/14
Filed: 1968-01-29
Abstract: 1,143,914. Projector lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 29 Jan., 1968 [1 Feb., 1967], No. 4440/68. Heading F4R. [Also in Division H1] A light source suitable for a film projector comprises a halogen incandescent lamp 3 secured by cement 11 to an ellipsoidal condenser mirror 1 with its filament 9 disposed along the mirror axis so as to contain the focus F, the ratio of the length t of the helical part of the filament to its maximum diameter d being less than 1À5. The mirror is made of glass having a thin " cold light " reflective coating 2 and has a fitting rim 12 provided with a locating projection 13. The filament is preferably wound from a first tungsten wire which is overwound with closely adjacent turns of a second tungsten wire of much finer gauge.
Patent GB-726842-A (GB)
Title: Composition for and method of removing hair and wool from animal hides and skins
IPC: C14C1/06
Filed: 1953-02-17
Abstract: 726,842. Depilatory paint for sheepskins and other animal skins. ZALCMAN, H. Feb. 17, 1953 [March 24, 1952], No. 4451/53. Class 76. A depilatory paint of the type used to dewool sheepskins consists of an aqueous composition comprising a source of hydroxyl ions selected from the oxides and hydroxides of calcium, strontium, barium, magnesium and sodium, a source of hydrosulphide ions selected from the sulphides and hydrosulphides of calcium, strontium, barium, magnesium, aluminium and sodium, the composition having a sodium ion content within the range of 1 to 60 per cent by weight of the hydrosulphide ion content of the composition, the hydrosulphide and hydroxyl ion content being within the range defined by the area FEBBSSFF of Fig. 2, the composition also containing a reserve source of hydroxyl ions. The preferred pH range is 11.5 to 11.9, and the consistency of the composition may be adjusted by the addition of an inert filler such as kaolin. Preferred compositions include calcium hydrosulphide as the source of hydrosulphide ions and this may be prepared by passing hydrogen sulphide into a lime suspension or by reacting aluminium or magnesium sulphides or hydrosulphides with lime. The use of barium or strontium sulphides to provide the hydrosulphide ion is not so desirable since a soluble calcium salt must be added to depress the pH by the formation of the corresponding strontium or barium salt, e.g. the chloride. Exemplary compositions are (1) calcium hydrosulphide and lime (or an equivalent composition containing the same hydrosulphide and hydroxyl ion content) to which is added sodium sulphide or hydrosulphide, the former increasing the hydrosulphide ion content and increasing the pH, the latter increasing the hydrosulphide ion content, as shown in Fig. 2, where a composition indicated by 1 is obtained by adding sodium sulphide to a calcium hydrosulphide/line suspension indicated by 2, and the composition of point 3 is obtained by adding sodium hydrosulphide to a composition indicated by point 4. (3) Calcium hydrosulphide and lime as shown by point 7 to which has been added sodium hydroxide to raise the pH to that shown in point 6. (5) A composition as shown by point 3 to which has been added barium (or strontium) hydroxide to raise the pH. The compositions are employed on the flesh side of the skins and the latter are preferably soaked and fleshed before application, thus enabling the depilation to be effected at a lower pH. Specification 680,784 is referred to.
Patent GB-962832-A (GB)
Title: Weaving loom with dummy shuttle
IPC: D03D29/00
Filed: 1962-02-06
Abstract: 962,832. Dummy shuttle looms. J. V. CHERPIN. Feb. 6,1962 [Feb. 10, 1961], No.4529/62. Heading D1E. In a dummy shuttle loom, the shuttle, Figs. 1 and 5 has oppositely disposed thread gripper devices, one only of which having jaws 3, 4 and an actuator plate 2 is shown, which co-operate respectively with thread injectors 1 at each side of the loom. These injectors are mounted with thread cutters 19 and weft spools 15 on the machine frame 18, Fig. 2, and each has an eye through which the thread 8 from the associated spool 15 passes. On a heating-up movement of the sley 17 the injector 1 enters the shuttle to abut the plate 2 to cause the jaws 3, 4 to grip the thread 8 of a previously laid weft from the spool at that side and to be locked by a latch 7 as in Fig. 5. At the same time a thread puller 23 on the sley draws some slack thread off the spool to accommodate the return movement of the sley. The shuttle is then picked by means not shown or described and carries the thread across the fabric, the thread between the shuttle and the previously laid weft being drawn across and severed by the cutter 19. When the shuttle reaches the other side of the fabric 12 the thread gripper 3,4 is released by a cam 11 on the sley engaging a lever 6 of latch 7. The operation is repeated with the injector on the other side of the loom engaging the thread from the spool on that side with the other gripper device on the shuttle for the return pick.
Patent GB-1533463-A (GB)
Title: Direct fed spiral antenna
IPC: H01Q3/40
Filed: 1976-02-05
Abstract: 1533463 Spiral antenna HARRIS CORP 5 Feb 1976 [6 March 1975] 04632/76 Heading H4A. An antenna comprises a plurality of conductive spiral arms spaced from each other and having a common axis of rotation, the radially inner ends of the arms being mutually angularly displaced about the axis and the outer ends of the arms being directly fed with RF electrical energy. The relative energization phases of the outer ends are such that currents in the arms have to flow inwardly to the inner ends and then outwardly before coming into phase at an annular active zone from which efficient EM radiation occurs, substantially no radiation occurring during the inward flow. Fig. 10 shows two antennas 12<SP>11</SP> forming part of a larger array. Each antenna has four spiral arms fed from an RF source via a quadrature hybrid power divider QH and hybrid dividers H1, H2. The antenna may be of printed-circuit construction and spaced from a ground plane conductor by a plastics foam sheet (Figs. 3 and 4, not shown). For beam steering, the inner ends of the spiral arms of each antenna can be selectively open-circuited or interconnected by means of a switching diode (or equivalent) network SW" appropriately biased.
Patent GB-633290-A (GB)
Title: Improvements in artists' sketching easels
IPC: A47B97/08
Filed: 1948-02-17
Abstract: 633,290. Easels. ATKINSON, P. Feb. 17, 1948, No. 4641. [Class 52 (iii)] An elongated stand head 1, adjustably mounted on a tripod or other support, carries slidable clips 4 running on spring wires 7 which cause the clips to grip the canvas or board 3 and also hold them in their adjusted position. An upper turn-button 20 and slidable clips 17 on the rear tripod legs provide an alternative mounting for the canvas 3<SP>1</SP>.
Patent GB-549288-A (GB)
Title: Improvements in or relating to electric heaters for thermally responsive devices
IPC: H01H71/16
Filed: 1942-04-09
Abstract: 549,288. Thermal switches. IGRANIC ELECTRIC CO., Ltd. (Cutler-Hammer, Inc.). April 9, 1942. No. 4678. [Class 38 (v)] A heater for a thermal responsive switch comprises a heater coil 1, through which the current passes to the device to be protected, in a substantially pressure - tight casing 9 with are-entrant wall extending within the coil and forming a well 13 into which projects the thermally responsive element, the casing is closed by an insulating head 6, 7 which supports the terminals 19 of the coil and a metal annulus 12. The casing and the end 12 are lined with mica 14, 15. The coil and the inner surface of the mica disc 6 are embedded in a mass of self-setting cement, electrically insulating but heat conducting.
Patent GB-875232-A (GB)
Title: Electron beam furnace for the production of gas free metals
IPC: H01J37/305
Filed: 1959-02-10
Abstract: 875,232. Electron beam apparatus. WILDBARFIELD ELECTRIC FURNACES Ltd. Feb. 10, 1959 [April 24, 1958], No. 4696/59 Class 39(1). [Also in Group XXII] 4696/59. An electron-beam furnace for melting gascontaining metal particles to produce gas-free metals comprises a preferably concave tantalum or tungsten cathode 24 with a heater 28 mounted in a cathode chamber 26 and emitting electrons which are formed by a focusing electrode 30 and an accelerating anode 32 into a beam 34 which is focused by coils 50 to pass through apertures in partitions 40, 42, 44 into a furnace chamber 10 containing a cold mould 12 having a stool 20 which is retractable by means of a screw 22, the mould and stool being cooled by water passing through passages 56. The electron beam maintains a pool 14 of molten metal in the cold mould 12. A conveyer 19 feeds metal powder or sponge from a supply 18 to the pool 14. A high capacity blower or diffusion pump 16 maintains the furnace chamber 10 at a pressure of from 1 to 10 microns of mercury, which is a sufficiently high vacuum to permit complete removal of dissolved gases from metals such as titanium, zirconium, tantalum and niobium. It will also permit dissociation or volatilization of many oxides and nitrides particularly of the Group V and Group VI metals. The cathode.chamber 26 is-maintained at a pressure of-about 0.01 micron of mercury by a pump 36. Pumps 46 and 48 maintain the spaces between the partitions 40, 42, and 44 at pressures of about 0.1 and 1 micron of mercury respectively. A valve may be provided in the tube 38 to maintain a high vacuum at all times in the vicinity of the cathode 24.
Patent GB-1161966-A (GB)
Title: Polymeric Compositions
IPC: C08L23/22
Filed: 1968-01-30
Abstract: 1,161,966. Pentadiene - 2 - methylbutene - 2 polymers as tackifiers. GOODYEAR TIRE & RUBBER CO. 30 Jan., 1968 [27 Feb., 1967], No. 4696/68. Headings C3P and C3Q. A composition comprises natural or synthetic rubber and as tackifier therefor a copolymer comprising 40 to 80 weight per cent of units derived from pentadiene, and 60 to 20 weight per cent of units derived from 2-methyl-2- butene. Suitable rubbers include EP and EPDM rubber, polybutadiene, polyisoprene, butyl rubber, and butadiene-styrene rubber. The tackifying copolymer may also contain up to 25% by weight of units derived from other hydrocarbons, e.g. isoprene, pentene-2 and 2,3-dimethyl- 1 -butene.
Patent GB-284096-A (GB)
Title: Improvements in and relating to governors for talking machine motors
IPC: G11B17/02
Filed: 1927-02-19
Abstract: 284,096. Slade, H. V., and Garrard Engineering & Manufacturing Co., Ltd. Feb. 19, 1927. Actuated or applied by speed regulators.-A device for damping the. movements of the brake disc of governors for talking machine motors comprises a strip or a number of strips of spring steel attached or each attached to a part of the governor and adapted frictionally to engage a relatively reciprocating part thereof. As shown in Fig. 1 the spring steel strip j is attached by a screw k to a conical part c of the sleeve a which carries the brake disc b and presses against the shaft h. To prevent lateral movement of the strip, a flat, or as shown in Fig. 3, a flat bottomed recess may be provided for it on the part c, or as shown in Fig. 5 a washer n with a concave surface may be interposed between the head of the screw and the strip. In modifications the strip j is attached either to the collar g or to the collar c and bears on the other collar.
Patent GB-993779-A (GB)
Title: Improvements relating to fluid flow control valves
Inventor: MCINTOSH DOUGLAS
IPC: F16K1/08
Filed: 1961-02-09
Abstract: 993,779. Valves; pipe Joints. MIDLAND BRASS FITTINGS CO. Ltd. Feb. 9, 1962 [Feb. 9, 1961], No. 4806/61. Headings F2G and F2V. A domestic hot-water or steam-radiator control-valve comprises a body 5 with an inlet 13 and an outlet 12 embodying a seat 11 with which co-operates a frusto-conical closure 7 movable axially by a spindle 8 having a threaded part 9 screwed into a body portion 4. The spindle 8, which extends out of the body 5 via a stuffing-box 24, is provided with a plain or winged operating knob 10, which may have the shape of paraboloid of revolution; alternatively a cover of similar shape to the knob 10 is attached to the body 5 and the spindle 8 is rotated by a key passed through an end opening in the cover. A flexible " 0 "-ring 28 is disposed between the spindle 8 and a body recess 30 to prevent the stuffing-box from being subject to pressure. A pipe 20 is connected to the inlet 13 by a compression joint formed by a sleeve 21 having a conical surface which is compressed into engagement with a similar surface on the inlet 13 by a flanged union nut 22. The outlet 12 is attached to the radiator by a coupling piece 14 with a tapered thread 16, the coupling piece having a flange 17 and a partspherical end-face 18 abutting a complementary part of a flanged union nut 19 screwed to the body, and the outlet, respectively.
Patent GB-606321-A (GB)
Title: Improvements in and relating to the production of carbon monoxide
IPC: C01B32/40
Filed: 1946-02-15
Abstract: A carbon-monoxide-containing gas, e.g. producer gas, is made by reacting at elevated temperature a solid combustible carbonaceous material, e.g. coal, coke or charcoal, with oxygen or an oxygen-containing gas in which the proportion of carbon dioxide in the gas normally obtained with a given set of reaction conditions is suppressed by effecting the reaction in the presence of a halogen and/or a non-metallic halogen compound in at least a "critical quantity" (i.e. the quantity of the halogen and/or halogen compound below which substantially no improvement in yield of carbon monoxide is obtained).  The halogen and/or halogen compound, e.g. hydrogen chloride, hydrogen bromide and carbon-tetrachloride, may be provided in the oxygen or oxygen-containing gas, and the latter may comprise air and oxygen or oxygen and carbon-monoxide, e.g. derived previously from the process.  The carbon - monoxide - containing gas may subsequently be treated with a solution of an alkali hydroxide, e.g. caustic soda.
Patent GB-579868-A (GB)
Title: An improved dielectric composition
IPC: C04B35/465
Filed: 1944-03-15
Abstract: A dielectric having a temperature coefficient of capacitance between plus 50 and minus 250 per million per degree C., comprises 60-99.8 per cent of magnesia and titania in proportions between 5 : 1 and 1 : 3, and small quantities of one or more of the oxides of calcium, barium, strontium.  When added singly, the amounts are respectively, calcium oxide 0.8-6 per cent, strontium oxide 0.2-5 per cent, barium oxide 0.5-15 per cent.  An example of the oxides used together is calcium oxide 0.75 per cent, strontium oxide 0.15 per cent, barium oxide 0.4 per cent.  Graphs and examples are given showing the decrease in the coefficient with increased additions of the oxides. The magnesia must be in a form to produce magnesium titanate, and may be fused magnesia, magnesium hydroxide, magnesite, or precipitated carbonate.  The titania may be rutile, anatase or mixtures.  The alkaline earth oxides may be added as carbonates, sulphates, titanates or other combinations.  The composition may also contain fluxes and plasticisers.