baber/WOPTO huggingface dataset:
Patent GB-1247671-A (GB)
Title: Polyurethane materials derived from fatty acid derivatives
Inventor: WOLFF P
IPC: C08G18/38
Filed: 1968-02-20
Abstract: 1,247,671. Polyurethanes. A. M. A. E. EGGERS-LURA. 14 Oct., 1968 [12 Oct., 1967; 20 Feb., 1968], Nos. 46671/67 and 8268/68. Headings C3C and C3R. Polyurethanes are prepared by reacting a polyisocyanate with a polyol component a major part of which comprises a reaction mixture of a hydrocarbon fatty acid glyceride and a dialkanolamine the ratio of dialkanolamine to fatty acid radicals being between 0À75 and 2À0 and in which at least half of the fatty acid of the glyceride has been converted into alkanolamide. It is preferred to incorporate a blowing agent in the reaction mixture to prepare rigid polyurethane foams. The polyol is suitably derived from a naturally occurring fat or oil and diethanolamine and is most suitable for use when a sample of the reaction mixture mixed with an equal amount of the polyisocyanate to be used in the polyurethane process provides a homogeneous mixture. Examples of preferred naturally occurring fats or oils are lard, bone grease, peanut oil, sesame oil, sunflower seed oil, olive oil, palm oil, coconut oil, corn oil, cottonseed oil, rapeseed oil, linseed oil, soybean oil, tung oil or fish oils. Polymerized drying or semidrying oils may also be used. Other polyols may be admixed with the dialkanolamide containing component. The additional polyol may be an ammonium soap of a dialkanolamine and a fatty acid which is incorporated in the polyol component by reacting the fatty acid glyceride with excess dialkanolamine and then neutralizing the unreacted dialkanolamine with a fatty acid. Other dihydroxy compounds e.g. ethylene glycol and propylene glycol may be used as the additional polyol. A preferred blowing agent is petrol ether, which may be mixed with conventional blowing agents. In a typical example soybean oil is reacted with diethanolamine to form a polyol component which is mixed with water, a silicone surfactant, dimethylcocosamine, petrol ether and a polymethylene polyphenyl isocyanate to produce a polyurethane foam.
Patent GB-966984-A (GB)
Title: Package containing fresh baker's yeast
IPC: B65D81/24
Filed: 1961-03-08
Abstract: A package of bakers yeast comprises at least 1 kg. of granulated fresh yeast and a bag constituted of a plastics material, textile material or a treated paper, the bag being so sealed as to permit the escape of carbon dioxide while substantially preventing the entry of oxygen from the air.  The bag may be of polyethylene, rubber hydrochloride or regenerated cellulose film and its open end may be sealed by fastening in a loose knot, twisting together or folding over, or by hermetically p  sealing and providing vents.  The bag may be packed in a paper bag or cardboard box outer.  Specification 495,503 is referred to.  Reference has been directed by the Comptroller to Specification 852,946.
Patent GB-538538-A (GB)
Title: A press or tool for fastening flat circular and like terminals
IPC: H01G13/00
Filed: 1940-05-11
Abstract: 538,538. Jointing by stamping. SMITH, I. May 11, 1940, No. 8512. [Class 83 (iv)] Terminals of the kind shown in Fig. 5 are jointed on to a conductor 5 by a hand operated press having a ram 10 with a cross pin 11 in a forked end and engaged by the hooked end 12a of a hand lever pivoted at 13. Springs 15, one on each side of the ram, effect the return. The ram is bored to receive at 17 interchangeable dies 16 according to the terminal size. A corresponding peg 23 is secured in the base and co-operates with a sleeve 18 slidable in the die under the control of a spring 19 and pin and slot 22. Dies as above may be fitted to tongs or to an automatically operated machine.
Patent GB-937436-A (GB)
Title: Improvements in and relating to methods of, and apparatus for, manufacturing semiconductor devices
Inventor: CORDINER JOHN GRESLEY GREY
IPC: H01L21/00
Filed: 1960-03-11
Abstract: 937,436. Transistors. MULLARD Ltd. March 11, 1960, No. 8668/60. Class 37. [Also in Group XXII] A jig for use in alloying material to opposite surfaces of a semi-conductor body simultaneously comprises a lever and apertures so arranged that pressure may be applied in a direction towards the body from both sides with the aid of weights, one of which acts via the lever. As shown, Fig. 1, a wafer 18 of N-type Si is supported on a hollow graphite cylinder 9 which is a force fit in the lower end of a vertical aperture 4 in a graphite jig 1. A second hollow graphite cylinder 12 rests, on the upper surface of the wafer 18 and comprises an annular recess 13 which accommodates a ring 19 of Au-Sb (99: 1 by wt.). An Al disc 20 and a Mo disc 21 are pressed towards the upper surface of the wafer 18 by a Mo weight 15 located in the bore of cylinder 12, and second, larger, Al and Mo discs 17, 16 are urged towards the undersurface of the wafer 18 by means of a second Mo weight 14, located in a second aperture 3 in Fig. 1, which acts through a stainless steel lever 8 centrally pivoted on a stainless steel rod 5 within a slot 2 in the bottom of the jig, and a Mo plunger 11 located within the bore in cylinder 9. The loaded jig is heated at 780‹ C. for 1 hour to alloy the components to form a transistor, the alloying of disc 17 providing a collector zone and of disc 20 providing an emitter zone, while ring 19 forms the base electrode. A jig for simultaneously holding the components of a plurality of semi-conductor devices comprises a series of positions, each equipped as described above; all the levers 8, however, are pivoted on a common rod 5 which passes right through the jig.
Patent GB-115932-A (GB)
Title: Improvements in Telescopes and the like.
Inventor: MOORE JAMES ALFRED
IPC: G02B23/18
Filed: 1917-06-16
Abstract: 115,932. Moore, J. A., Barnes, F., and Morris, H. R. June 16, 1917. Telescope s y s t ems; lenses.-In monocular or binocular field and like glasses, the object-glass consists of two positive achromatised lenses a, b arranged in contact or with a small air space between them, and the ocular of an asymmetric negative lens preferably consisting of a symmetrical triplet made up of two like meniscus lenses and a double-concave lens. The lens a, as shown, consists of a convexo-concave lens a<1> of flint glass cemented to a plano-convex crown-glass lens a<2>. The lens consists of a doubleconvex crown-glass lens b<1> cemented to a convexoconcave flint-glass lens b<2>.
Patent GB-368087-A (GB)
Title: An improved mounting for the door of an oven or the like
IPC: F23M7/00
Filed: 1931-03-21
Abstract: 368,087. Spring hinges. BENTLEY, H. L. and WHALLEY, W., Magnet Works, Landor Street, Birmingham. March 21, 1931, No. 8743. Drawings to Specification. [Class 65 (ii).] A vertical oven door, hinged at the bottom, is provided with two counterbalancing springs arranged about the hinge rod. One of these springs holds the door closed and balances it during the initial opening movement, through about 20‹, and the second spring, which is stronger, then comes into action and assists the first spring to balance the door during the remainder of the movement. The springs are partly enclosed by a hood on the bottom of the door.
Patent GB-196265-A (GB)
Title: Improved manufacture of artificial resins
IPC: C08G61/02
Filed: 1923-03-27
Abstract: Resins are obtained by the interaction at a temperature above 120 DEG C. of aromatic hydroxy compounds, such as phenols and naphthols, with methylene chloride in the presence of ammonia or of substances which produce ammonia.  Usually two or more molecules of ammonia are employed for each molecule of methylene chloride.  Other bases, such as sodium hydroxide, may be added to facilitate the reaction. According to the example, phenol is heated for some hours with methylene chloride and aqueous ammonia at a temperature of 150 DEG C., a yellow resinous product being obtained.
Patent GB-200777-A (GB)
Title: Improvements in microscopes
IPC: G02B21/24
Filed: 1922-09-02
Abstract: 200,777. Taylor, W., and Kapella, Ltd. Sept. 2, 1922. Microscopes of the kind described in Specification 196,948 are built up of mechanical and optical elements, mutually adapted for attachment to and combination with one another in various ways, so as to be adjustable for building various kinds of optical instruments. A series of microscopes is described built up of such elements, and includes both simple and compound microscopes, the latter being fixed or inclinable. The microscope shown in Fig. 4 together with the eyepieces shown in Fig. 5 include the whole of the constructional details. A tubular holder B formed of sheet metal with one edge raised and overlapping the other so as to yieldingly hold the lens cells of the eyepieces and objectives, is mounted in a cradle element b<8> comprising an angle plate of sheet metal carried on a stud on the bracket D round which it is free to turn to incline the tubular holder B. The brecket D is supported by a pillar b<2> provided with stamped metal feet c. A second pillar portion attached to the cradle b<8> carries the stage E and substage e<9>, adapted to receive the lensholder e containing lenses to serve as a sub-stage condenser. A reflector F fitted to the upper end of the tubular holder B acts as a camera lucida. The eyepiece, Fig. 5 may serve as a simple microscope and the holder B detached from the bracket D will serve as a non-inclinable compound microscope.
Patent GB-149597-A (GB)
Title: An improved vacuum shuttle threader
IPC: D03J3/04
Filed: 1920-03-26
Abstract: 149,597. Manning, G., and Manning, A. March 26, 1920. Weavers' shuttle-threaders.- A vacuum-producing device for threading shuttles comprises a rubber or like nozzle a, which has a metal rim and is secured to the bottom of a box. A rubber, leather, or other bellows b with a tin or other top c is fastened to the box bottom, and a stout wire or other handle, working through a hole in the top of the box, is fastened to the top c to actuate the bellows, the shuttle eye being applied to the nozzle a.
Patent GB-111679-A (GB)
Title: Electric Furnace for Steel Melting.
Inventor: STEINBERG SERGE
IPC: H05B3/66
Filed: 1916-06-27
Abstract: 111,679. Steinberg, S., and Gramolin, I. June 27,1916. Couplings.-In an electric furnace, carbon resistance rods h are supported at their ends bv copper or graphite blocks k on metal holders l which are water-cooled and are pressed inwards by spring and screws. Each holder may have a longitudinal partition to direct the circulation of water and a lug for attachment of a cable. A pin y entering a socket on the end of the holder is engaged by a spring within a cylinder x, threaded for adjustment in a bracket w. A screw plug in the end of the cylinder compresses the spring.
Patent GB-1174868-A (GB)
Title: Chemically Treated Fibres
Inventor: GRESHAM HAROLD ERNEST
IPC: D01F9/22
Filed: 1966-03-02
Abstract: 1,174,868. Polyacrylonitrile fibres. ROLLSROYCE Ltd. 24 Jan., 1967 [2 March, 1966], No. 9089/66. Heading B.5B. [Also in Division C1A] Polyacrylonitrile or acrylonitrile copolymer, fibres are stretched and treated in an oxidant liquid or the vapour thereof at a below the fibre decomposition temperature, and heated to a temperature at which decomposition occurs. The oxidant liquid may be nitriobenzene sulphonyl chloride. In an example, fibres are stretched in steam at 100‹ C, treated in nitrobenzene vapour at 210‹ C. and heated to 100‹ C, at a rate of temperature increase of 250‹ C. per hour, in a vacuum while below 500‹ C. and thereafter in an argon atmosphere.
Patent GB-1111625-A (GB)
Title: Improvements in or relating to carburetting apparatus for internal combustion engines
Inventor: O'NEILL CORMAC GARRETT
IPC: F02M71/02
Filed: 1966-03-02
Abstract: 1,111,625. Spray carburetters. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES S. I. B. E. Feb. 8, 1967 (March 2, 1966], No. 9176/66. Heading F1B. A fuel air mixture formed in a pipe 19 is fed by a pump 17 through pipes 24 to the air-inlet manifold 12, the fuel being controlled by a valve 25 actuated by a suction-actuated flap 14 in the main air inlet 10 and the suction in pipe 19 being independent of that in the pipe 10. The flow in pipe 10 is controlled by throttle valve 13 and the fuel metering needle 25 is connected to flap 14 by a flexible connection 26. In Fig. 1 the suction in pipe 19 is maintained substantially constant by a suction-actuated piston 27 and in Fig. 3 (not shown) the suction is varied in accordance with the throttle position 13 by a needle valve (34) connected to the throttle 13. Alternatively the needle (34) may control the suction seating on the piston 27 of Fig. 1. In a further modification the valve 27 in pipe 19 is replaced by a fixed restriction. In Fig. 5 the pipe 19 additionally contains a piston 45 increasing the suction, and hence the fuel supply, on acceleration. Piston 45 is actuated from throttle valve 13, Fig. 1, by a dashpot 48 as that on sudden
Patent GB-668020-A (GB)
Title: Improvements in or relating to heat transfer according to the carnot principles
IPC: F25B29/00
Filed: 1950-04-14
Abstract: 668,020. Air conditioning. RYGARD, S. O. April 14, 1950. [April 14, 1949] No. 9213/50. Class 137. [Also in Group XIII] Apparatus for cooling and heating gaseous media comprises a plurality of refrigerating systems 36, 38, 40, 42 of the compression, condensation and expansion type and operating at different temperature levels, the evaporators 44, 46, 48, 50 being traversed by one medium contacting successively colder evaporators and the condensers 58, 56, 54, 52 being traversed by the other medium in heat exchange therewith at successively warmer temperatures, the conditions of operation being such that the highest temperature of the medium which is, on the average, colder, is higher than the lowest temperature of the medium which is, on the average, warmer. In Fig. 1, ambient air enters the system at 22, passes over the evaporators and an optional heater 86 and is forced by a pump 16 through trunking 12 to a cold chamber 10 whence it leaves through trunking 14 and is divided, part flowing by a duct 26 to be mixed with incoming air in a part 20, variable dampers 28, 30 being provided. The other part, or, if desired, the whole of the air from the trunking 14 passes over the condensers and is discharged from the system by a pump 32 through trunking 34. In each condenser unit, water is sprayed into the air to cool it by evaporation and saturate it. In Fig. 3, damp air from a drying chamber 90 flows through trunking 94 to the evaporators 100 where moisture is precipitated. It is then mixed at 104 with air coming directly from the chamber through trunking 112. The mixture then passes over the condensers 98 and is returned to the chamber. Instead of mixing undried air at 104, the air may be led between each two condenser stages in heat exchange with compartments in the chamber 90. In a further modification, warm air from a cow shed flows over the evaporators and the condensers heat up cold external air. When an internal combustion engine or steam engine is used to drive the compressors, the heat of the cooling water and of the exhaust or the exhaust steam and the condenser heat respectively may be used to augment the heating due to the condensers of the refrigerating systems.
Patent GB-1495873-A (GB)
Title: Closed loop air-fuel ratio control system for use with internal combustion engine
IPC: F02M7/24
Filed: 1976-03-09
Abstract: 1495873 Valves NISSAN MOTOR CO Ltd 9 March 1976 [18 March 1975] 9300/76 Heading F2V [Also in Divisions G3 and F1] The drawing shows an electromagnetic valve having a cylindrical armature 28a reduced annularly at 28c ... 28e to form passages of three different widths. Springs 70, 72 bias the valve to the middle sized passage as shown and the appropriate coil 74 or 76 is energized to bring the larger or smaller passage into use. The valve is used in an air/fuel ratio control system on an I.C. engine (see Division G3).
Patent GB-332529-A (GB)
Title: Improvements in seat covers
IPC: B60N2/60
Filed: 1929-03-22
Abstract: 332,529. Dunlop, S., (wil-Fry Corporation). March 22, 1929. Loose covers, attach-' ing.-A cover 12 for a seat back has a stiffening rod 13 in its upper hem which engages hooks 16 on the seat frame, the underside of the hem being slotted to permit direct engagement of the rod with the hooks. The lower edge of the cover preferably fits behind the seat cushion and may also have a stiffening rod 18.
Patent GB-786766-A (GB)
Title: Improvements in or relating to pulse radar apparatus
Inventor: HOWELL RONALD THOMAS ALBERT
IPC: H03K7/00
Filed: 1955-03-30
Abstract: 786,766. Frequency-changing. DECCA RECORD CO., Ltd. Feb. 9, 1956 [March 30, 1955], No. 9339/55. Class 38 (2). [Also in Group XL (c)] A pulse generator comprises a full-wave rectifier frequency doubler to which an alternating current input is applied and a pulse producer coupled to the output of the doubler via a second doubler so that the pulse repetition frequency is four times that of the A.C. input. The Figure shows the pulse generator of a modulator for a pulse radar apparatus in which an A.C. input, for example, at 1000 c/s. is applied to a frequency doubler comprising rectifiers 13, 14, the output of which has a resonant circuit 26, 27 tuned to twice the frequency of the original A.C. input. The voltage across the tuned circuit is applied via triode phase-splitter stage 25 to a further frequencydoubler comprising rectifiers 36, 37, the output of which is applied to trigger blocking oscillator stage comprising tube 43 to produce a pulse train at output 47 having a P.R.F. which is four times that of the original A.C.. input. In a modification, Fig. 2 (not shown), the output from the second frequency doubler is shaped by triggering a cathode-coupled flip-flop stage, the pulse output from which is applied via a differentiating circuit so that the resulting positive peaks trigger the blocking oscillator pulse generator stage. The P.R.F. of the generated pulse train may be increased by increasing the number of frequency-doubler stages in the input circuit.
Patent GB-1498571-A (GB)
Title: Preparation of active-carbon-supported catalysts
IPC: C01B32/50
Filed: 1976-03-09
Abstract: 1498571 Oxidizing carbon monoxide in gases CALGON CORP 9 March 1976 [12 March 1975] 09344/76 Heading C1A [Also in Division Bl] Carbon monoxide is oxidized to CO 2  in the presence of sulphur dioxide using a catalyst prepared by impregnating the activated carbon with a catalyst composition comprising copper, chromium, nickel, iron, manganese, gold, silver, platinum, palladium or rhodium or an oxide, hydroxide, or salt thereof and with an inert hydrophobic compound in an amount of 1-20% wt. based on the carbon. The hydrophobic compound reduces the water absorption by the catalyst and thus also the formation of sulphuric acid thereon. The activated carbon may be oxidatively modified to add 1-5% wt. oxygen thereto (see Specification 1,498,572). Examples describe the preparation of PdCl 2  + CuCl 2  catalysts on unoxidized activated carbon or activated carbon oxidized by treatment with nitric acid and impregnated with naphthalene or anthracene by mixing with the solid hydrocarbon and allowing to stand at either room temperature (naphthalene) or 125‹ C. (anthracene) until all the hydrocarbon has been vaporized and the vapour absorbed by the catalyst. The catalysts were then used to oxidize CO (0À5% v) in a stream of air at 80‹ F., 100% r.h. and a space velocity of 3,000 h-' containing 200 p.p.m. SO 2 . After use the catalysts were regenerated by drying in a stream of dry air at ambient temperature or 125‹ C.
Patent GB-1528657-A (GB)
Title: Stencil paper assembly
IPC: B41N1/24
Filed: 1976-03-09
Abstract: 1528657 Stencils RISO KAGAKU CORP 9 March 1976 [13 March 1975 16 April 1975 24 April 1975 (2)] 09356/76 Heading B6C A paper stencil assembly comprises an inkimpermeable sheet 103, part of the periphery of which contacts one side of a frame sheet element 102, and a stencil paper 101 connected to the other side of element 102 thus defining an ink storing space. Paper 101 may be mechanically perforated, e.g. by typewriter or ball pen, or heat may be used.
Patent GB-598169-A (GB)
Title: Improvements relating to the monitoring of voltage or current impulses
IPC: H03K4/86
Filed: 1944-05-16
Abstract: 598,169. Saw-tooth generators. BRITISH THOMSON-HOUSTON CO., Ltd., and MELVILLE, W. S. May 16, 1944, No. 9410. [Class 40 (v)] [Also in Group XXXVI] In a double-cable circuit for producing impulses as described in Specification 589,128, a time base circuit for monitoring the pulse consists of a condenser in series with an impedance, the condenser becoming charged during the period preceding the impulse and discharged at the beginning of the impulse, through the impedance which contains an integrating circuit so as to produce a substantially linear time base voltage or current. In Fig. 1, the rising current fed from the A.C. input transformer T1, through the isolating inductance L2 and primary of transformer T2 charges the cable networks CL1, CL2 and condenser C1 At a certain voltage, discharge device S, fired by the secondary winding of T2 discharges the cable network to produce a pulse across load resistance R and simultaneously C1 commences to discharge in series with the network Z1, one form of which is illustrated in Fig. 2. A tapping A feeds a proportion of the condenser voltage to the integrating circuit R3, C2 which feeds a linearly increasing 'voltage to the deflecting plates of the cathode-ray tube Cr, shunted by the limiter N. The variable shunt R4 provides adjustment of the locating of the spot on the screen. A brightening pulse is obtained from condenser C5. Fig. 5 (not shown) gives an arrangement for symmetrical scanning and Fig. 8 (not shown) an arrangement for electromagnetically scanned tubes. In the arrangement, Fig. 9, for testing transformer core materials and the like, pulses produced in the cable circuit load R are applied to the coil C having as core the substances to be tested, the coil current being traced on the oscillograph by means of a voltage taken off the low resistance S1, the applied voltage being traced from the tapping of potentiometer R5, R6 (or C5, C6), and the scanning voltage for the tube being obtained as above. The Specification also describes an integrating circuit R7, C7, the voltage from which is used as a scanning voltage, the voltage from S1 being applied at right angles to display the B-H curve for the material.
Patent GB-530726-A (GB)
Title: Improvements in or relating to the production of high velocity ions
IPC: H05H13/00
Filed: 1939-03-25
Abstract: 530,726. Discharge apparatus. FIDES GES. FUR DIE VERWALTUNG UND VERWERTUNG VON GEWERBLICHEN SCHUTZRECHTEN. March 25, 1939, No. 9429. Convention date, March 26, 1938. [Class 39 (i)] In producing high velocity ions by two opposed, semi-cylindrical, box-shaped, accelerating electrodes 2, 3 receiving alternating voltages so that the ions travel in spiral paths in an axial magnetic field, the gap 4 between the electrodes is curved as shown in a direction opposite to the direction X of rotation of the ions. The ions are thus correctly accelerated each time they cross the gap 4 even at such high velocities that the change in their mass is appreciable, their velocity no longer increasing as rapidly as the radius of their path. An ion source 1 is provided at the centre. In a modification, the gap 4 is not gradually curved but is stepped back, each step having a circular part concentric with the electrodes and a radial part.