baber/WOPTO huggingface dataset:
Patent GB-388421-A (GB)
Title: Improvements in or relating to compositions of matter
IPC: C08L1/10
Filed: 1931-08-24
Abstract: In the preparation of compositions containing acetone-soluble cellulose acetates &c. or acetone-soluble cellulose ethers, more particularly moulding powders, and of articles such as sound-records, there are employed cellulose derivatives of low viscosity characteristics, namely, of viscosity below 5, preferably between 0,5 and 3, as measured by the rate of flow of a 6 per cent solution relative to that of glycerine, taken as 100. p By the use of these low viscosity products, a better reproduction of the surface of the mould is obtained, together with an economy of solvent when such is used in the preparation of the composition &c. Low viscosity cellulose acetates may be obtained by the employment of high temperatures during the acetylation, see Specification 326,515, [Class 2 (ii), Cellulose &c.], or by the employment of large proportions of strong catalysts, or by prolonging the duration of the acetylation reaction; or, alternatively, by hydrolysing the primary acetylation solutions at high temperatures or for long periods of time; or again by treatment of cellulose acetate with hydrogen peroxide in the presence of iron salts, see Specification 273,473, [Class 81 (ii), Medical &c. appliances], or preferably by heating under pressure with water or aqueous liquid, see Specification 377,313, or with aqueous solutions of salts or mineral acids. The compositions may contain plasticizers, fire-retardants, pigments, effect materials, etc.; and the ingredients may be incorporated with the aid of solvents and at elevated temperatures, or as an alternative the cellulose derivative and plasticizer may be simply ground together. The Specification as open to inspection under Sect. 91 includes the application of the invention to organic derivatives of cellulose in general, and it refers to the production of films, foils and transparent paper by casting on wheels, bands, &c. or by extrusion into precipitating baths, and also of artificial filaments, yarns, horsehair, &c. by wet or dry methods. This subject-matter does not appear in the Specification as accepted.ALSO:In the preparation of compositions containing acetone-soluble cellulose acetates &c. or acetone-soluble cellulose ethers, more particularly moulding powders, there are employed cellulose derivatives of low viscosity characteristics, namely, of viscosity below 5, preferably between 0,5 and 3, as measured by the rate of flow of a 6 per cent solution relative to that of glycerine taken as 100.  By the use of these low viscosity products, a better reproduction of the surface of the mould is obtained, together with an economy of solvent when such is used in the preparation of the composition &c.  The compositions may contain plasticizers, fire retardants, pigments, effect materials etc.; and the ingredients may be incorporated with the aid of solvents and at elevated temperatures, or as an alternative the cellulose derivative and the plasticizers may be simply ground together.
Patent GB-780839-A (GB)
Title: Improvements in or relating to electric delay devices employing semi-conductors
Inventor: GUNN JOHN BATTISCOMBE
IPC: H03F3/14
Filed: 1951-10-12
Abstract: 780,839. Semi-conductor devices. ELLIOTT BROS. (LONDON), Ltd. Oct. 13, 1952 [Oct. 12, 1951], No. 23857/51. Class 37. [Also in Group XL (c)] An electric delay device comprises a filamentary semi-conductor body 2 having non- rectifying contacts 3, 4 at each end and at an intermediate point 5, an electric field being applied along the body, and input circuit means 6 for injecting minority current carriers at a point between one end contact and contact 5 whereby a delayed output signal appears between contact 15 and the other end contact 4. The arrangement may be used to provide an amplified and delayed reproduction of a pulse train in binary computing systems. In the example described the body 2 consists of N- type germanium and the electric field is provided by means of batteries 7 and 9 so that holes injected at point contact electrode 6 flow along the body to electrode 4, at a speed dependent upon the field strength. The current through the load resistance 12 depends on the conductivity of the portion of the semi-conductor between electrodes 5 and 4, which depends on the number of current carriers present. Thus if a positive pulse is applied to electrode 6, a group of carriers is injected, which when and as it reaches the portion between electrodes 5 and 4 increases the output current through resistor 12, until the carriers are extracted at electrode 4 when the output current falls to its normal value. Fig. 3 shows the effect produced in response to an input mark/space pulse train as shown in (a). Each mark and space has a duration t, and the transit time between electrodes 6 and 5 is arranged to be equal to t, and that between electrodes 5 and 4 to 2t. While carriers corresponding to an input pulse are crossing the zone boundary at 5, the resistance between 5 and 4 decreases linearly, and then remains at a lower level until the carriers begin to leave the body at electrode 4. Curve (b) thus represents the change in resistance between electrodes 5 and 4, due to the input pulse train. The resulting output waveform (c) may be used to gate a separate source of " clock " pulses (d) so that the final output (e) is the same as input (a) delayed by an interval 2t. Reference has been directed by the Comptroller to Specification 700,236.
Patent GB-816290-A (GB)
Title: Improved process for the recovery of sulphuric acid from waste acid
Inventor: ROBERTS ELWYN
IPC: C01B17/94
Filed: 1951-10-12
Abstract: Sulphuric acid is recovered and purified after being used in the nitration of an organic amino compound by first distilling off water, then heating to decompose impurities, oxidizing to remove dark-coloured impurities, e.g. with nitric acid, then cooling, diluting with water and treating with absolute alcohol to give a precipitate of ammonium normal and acid sulphates which are separated, distilling off the alcohol and concentrating the residual acid by heating and evaporating.
Patent GB-1023584-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: WEBB JOHN
IPC: G21C1/02
Filed: 1961-07-03
Abstract: 1,023,584. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 18, 1962 [July 3, 1961; Sept. 19, 1961], Nos. 23901/61 and 33482/61. Heading G6C. In a fast nuclear reactor, a breeder blanket surrounds the core and the whole is immersed in a liquid metal coolant, such as sodium or sodium/potassium alloy, which has an inert atmosphere of nitrogen above it. Control is effected by the downward withdrawal of fuel elements. Fuel elements discharged from the fast reactor core contain fission products which decay to produce heat; the fuel elements from the core are therefore stored in the breeder blanket for about 3 months. They are initially withdrawn vertically upwards from the core into a graphite and steel plug, filled with coolant to prevent overheating of the element. Lateral movement of the fuel elements from the core to the blanket is effected by means of eccentric horizontal shields, above the core, which support the steel plug. The interior of each steel plug comprises a chamber into which the fuel element to be removed is drawn. The coolant level within the chamber is adjustable by means of a valve system controlling the nitrogen flow and the level is indicated electrically. The fuel element control mechanism is supported within vertical tubes the level of the coolant alloy in which is adjusted by nitrogen pressure to ensure lubrication of the mechanism.
Patent GB-1425376-A (GB)
Title: Method for preparing an impregnation solution useful in making  a hydrogenation catalyst
IPC: B01J23/88
Filed: 1973-05-18
Abstract: 1425376 Preparing hydrogenation catalysts and impregnation solutions therefor AMERICAN CYANAMID CO 18 May 1973 [17 Oct 1972] 23901/73 Addition to 1364327 Heading B1E Impregnation solutions useful in the preparation of catalysts are made by mixing with an aq phosphoric solution in any order molybdic acid and/or a compound capable of forming molybdic aoid on calcination and at least one of: the hydroxides, acetates and formates of cobalt and nickel and nickel oxide of surface area not less than 1 m<SP>2</SP>/g, under such conditions including heating that the molybdenum and Group VIII metal compounds are dissolved, and if necessary adjusting the concentration to give an aq. solution containing 0.3- 2.5 moles/litre P, 0.4-1.5 moles/litre Ni and/or Co and 1-3 moles/litre Mo, the NH 4 <SP>+</SP> concentration not exceeding 1.5 moles/litre. Catalysts are made by impregnating alumina with the solution so prepared, drying and calcining to obtain a catalyst containing 2-6 wt% Group VIII metal oxide, 8-22 wt% molybdenum oxide and 1-5 wt% P the percentages being based on the weight of the calcined catalyst.
Patent GB-1547833-A (GB)
Title: Cuclic-type automatic machine for use in the packaging of products
IPC: B65B19/28
Filed: 1976-06-10
Abstract: The machine comprises a plurality of operating members dependent upon at least one common-phase synchronisation member (4) of the machine performing a continuous rotating movement. To facilitate phase-coordination of the operating members, the device is provided with a pulse generator (5, A, B) associated with said common-phase synchronisation member (4) performing a continuous rotating movement, designed to emit a succession of at least two series of pulses of equal period and phase-shifted with respect to each other. Provision is also made for a negative OR logic device of the exclusive type (8) which discriminates the succession of combinations of said pulses and is connected to said pulse generator (5, A, B), as well as a counter (9) connected to the output (U) of said logic device and a code converter (12) connected to said counter having a plurality of outputs (U1, U2 ... Un) each connected to the slave elements of the machine. <IMAGE>
Patent GB-754293-A (GB)
Title: Improvements in or relating to stereoscopic viewing apparatus
IPC: G02B27/22
Filed: 1954-08-18
Abstract: 754,293. Stereoscopes. ANKERSMIT, K. S. Aug. 18,1954, No. 24057/54. Class 97 (1). In a hand stereoscope for viewing a stereoscopic pair of transparencies mounted on a slide 47, an electric lamp 14, operated by seriesconnected separate cell dry batteries 20, 21 and 22 is provided to illuminate a light-coloured background surface 46 and, a spring contact device is located so as to be closed to complete the lamp circuit by the pressure of an inserted slide. Preferably the lower edge of the slide closes a spring contact device consisting of strips 19 and 34. As shown, single cell dry batteries 20, 21 and 22 are connected in series and supported by spring strip 17 which is sprung into position in case 3 behind member 27. Rightangled strips 16 and 18 connect batteries 20 and 22 to strips 32 and 19 respectively. Stud 36 connects strip 16 to strip 32, passing through but not touching strip 34. Insulating layers 33 and 35 complete the contact switch and lamp mounting which is secured to case 3 by coverplate 45 and screws 37. Members 38 depending from lid 4 co-operate with members 23 to hold the batteries in position and background member 39 and slot defining member 40 are also part of the lid. Binocular viewing lenses, mounted in housing 1, are attached to slides 6 which are moved in opposite directions, to vary the interocular distance, by pins 7a on wheel 7 which meshes with operating whael 8. Housing 1 is movable axially, to focus the lenses, by knob 13 which turns pinion 12 engaging rack 11.
Patent GB-661664-A (GB)
Title: An improved liquid fuel burner comprising means for preheating the liquid fuel
IPC: F23C99/00
Filed: 1948-09-14
Abstract: 661,664. Liquid-fuel burners. OOR, G. Sept. 14, 1948. [Oct. 6, 1947] No. 24088/48. Class 75(i). In a liquid fuel burner comprising a valve for, regulating the flow of liquid fuel to a burner nozzle and operable by the fuel pressure, a cover 4, Fig. 1, closing a fuel preheating chamber 1 from the side 5 of a boiler, supports wholly within the chamber 1, a unit 6 carrying therewithin the pressure responsive valve and having an atomizing nozzle 7 opening into the interior of a hollow extension 10 to the cover 4 which has at least one inlet (e.g., the openings 9, 9<SP>1</SP> shown) for the combustion air. The preheating chamber 1 contains an electric heating element 3 and is supplied with fuel under pressure through an inlet- 2. Fuel passes through a port 39, Fig. 4, into the body 11 of the unit 6 and forces back a piston 14, against the action of a spring 30, to retract a valve member 22 from a valve seat 25 at the inner end of nozzle member 7, and thus allows discharge of fuel through an aperture 28 in an end disc 29. The volume of discharge may be controlled by adjustment of the compression of the spring 30 by means of a screw 31 protected by a cap 34.
Patent GB-1497330-A (GB)
Title: Information device
IPC: G09F11/23
Filed: 1976-06-04
Abstract: 1497330 Indicators PHOTO PRECISION Ltd 4 June 1976 [4 June 1975] 24116/75 Heading G5C In an information displaying device, a disc 2 bearing information and apertured at 10 is rotatably mounted in an envelope formed by folding a sheet 1 at a-a and b-b and gluing flaps 9 on section C to section A, the section A having cut-out flaps 6, 6a which pass through aperture 10 and lay flat. Disc 2 is rotated by means of a portion exposed through aligned notches 5, 5a, 5b in the envelope to reveal selected information at a window, 3, complementary information appearing at a rear window 4. As shown, gardening information is displayed with a calendar on the lower part of section C.
Patent GB-302299-A (GB)
Title: Improvements in or relating to the manufacture of shoes
IPC: D05B15/00
Filed: 1927-09-14
Abstract: 302,299. British United Shoe Machinery Corporation, Ltd., and Bates, A. Sept. 14, 1927. Stitches ; sewing- machines; extra threads applying. - An extra thread 20 is interwoven with the roots 21 of a chain stitch seam in making a turnshoe which is sewn without previous lasting. The extra thread prevents the stitches from cutting into the sole and thereby permits the use of soft materials and avoids the necessity of cutting a channel when very thin materials are used. Thread-laying mechanism suitable for use in the machine of Specification 4173/12 is described. In place of the extra thread, a strip of material may be used which is caught by the stitches of the seam. Specifications 21860/06 and 21870/06 also are referred to.
Patent GB-758606-A (GB)
Title: Improvements in or relating to petrol injection systems in internal combustion engines
IPC: F02D1/00
Filed: 1954-08-19
Abstract: 758,606. Regulating; starting direct injection engines. REGIE NATIONALE DES USINES RENAULT. Aug. 19, 1954 [Oct. 2, 1953], No. 24217/54. Classes 7(3) and 7(6) The control rod 5 of a fuel injection pump 1 is controlled by a spring-loaded diaphragm 6 actuated by induction pipe suction transmitted through a pipe 7 so that the pump delivery increases with increasing induction pipe pressure to maintain a substantially constant fuel-air ratio up to a predetermined pressure, when the diaphragm 6 is acted upon by a rod 9 actuated by a second spring- loaded diaphragm 10 subjected to intake pipe pressure through a pipe 11, which rod 9 produces an increase in the fuel-air ratio. The diaphragm 10 abuts against a stop 13 when the intake pipe suction is high, e.g. when the air throttle valve is, almost closed, and when the throttle valve is suddenly opened the inertia of the rod 9 striking the diaphragm 6 produces a temporary increase in fuel supply for acceleration. A cock 15 in the pipe 11 is turned at starting to connect the suction space above the diaphragm 10 to atmosphere to produce a rich fuel-air ratio for starting. The diaphragms 6, 10 may be replaced by pistons.
Patent GB-1201892-A (GB)
Title: Arrangements for mounting implements on vehicles
IPC: A01D67/00
Filed: 1969-05-13
Abstract: 1,201,892. Tractor hitches; mowers; swath rakes. MASCHINENFABRIK FAHR A.G. 13 May, 1969 [14 May, 1968], No. 24259/ 69. Headings AID and A1F. In an arrangement for supporting an agricultural implement, a rotary mower 21 has attached a sleeve 15 which releasably engages a stud 11 on a coupling arm 10 of a lifting frame 5. Frame links 8, 9 are articulated at their ends enabling the mower to be lifted by means of a hydraulic ram 23. Sets of rollers 6 and 7 carried on the frame engage inclined surfaces 3 and 4 respectively of a support 2 attached to the front or rear of a vehicle and extending across the vehicle width. Frame 5 can be locked in position on the support 2 by means of a clamping eccentric member (not shown). Drive to the mower from an articulated drive shaft 27 is through a chain jib 31 rotatably mounted on the mower. A hinged guide 28 mounted on pivot 30 on support 2 carries the shaft 27. In another embodiment, links 8 and 9 are of unequal length with the lower links 9 longer than links 8 so that on raising the implement the end further from the vehicle is raised higher than the nearer end. A further embodiment for a front swath rake is shown.
Patent GB-922344-A (GB)
Title: Improvements in or relating to the control of the air inlet throttling member in gas or dual fuel operated internal combustion engines
Inventor: HUG HANS RUDOLF
IPC: F02D19/10
Filed: 1959-07-15
Abstract: 922,344. Regulating; dual fuel engines. SCHWEIZERISCHE LOKOMOTIVUND MASCHINENFABRIK. July 15, 1959 [July 16, 1958], No. 24286/59. Classes 7(2) and 7(6) [Also in Group XXIX] In a gas or dual fuel I.C. engine the gaseous fuel and air are introduced into a mixing chamber 6a ahead of each cylinder 1 and enter into the cylinder through a common inlet valve 3 and the air inlet throttling member 40 is controlled by a servomotor in accordance with the speed of the engine and in accordance with the pressure in the air manifold ahead of the mixing chambers. The speed governor 37 controls two levers 35, 36 which are connected through linkages to the shafts 31, 32. The shafts 31, 32 carry levers 29, 30 respectively, which actuate racks 23, 28 to control the angular position of pistons 20 of gas admission valve actuation pump 15 and fuel injection pump 16, respectively. The shafts 31, 32 have levers 41, 42 connected by links to levers 43, 44 which are connected to a lever 45 connected in turn to a floating lever 46 one end of which actuates the pilot valve 47 of a spring loaded piston motor 51 which actuates the throttle member 40 in the air inlet. The pressure downstream of the member 40 is fed via a pipe 57 to act on a bellows member 52 which acts on the other end of the floating lever 46 to re-centre the pilot valve 47. A spring washer 53 closes the bellows member 52 and in order to alter the datum setting the washer is adjustable by hand or by means responsive to atmospheric pressure and ambient temperature. In a modification, Fig. 2 (not shown) the levers 43, 44 are replaced by cam members so shaped as to give a desired characteristic of response. The engine may be operated simultaneously on gas and liquid fuel or on a Diesel cycle when the supply of control fluid 64 is cut off to servopiston 51 which is forced by spring 65 into the top position thus turning throttle 40 to the fully open position. Specification 906,503 is referred to.
Patent GB-358195-A (GB)
Title: Improvements in golf bags
IPC: A63B55/00
Filed: 1930-08-14
Abstract: 358,195. Golf bags. KIDD, A., Golf Club House, Pleasington, near Blackburn. Aug. 14, 1930, No. 24329. [Class 132 (ii).] A golf bag comprises a central substantially rectangular or oval compartment 1 surrounded on one or both sides by pockets 2, 3, 4 for the reception of golf clubs. The central compartment may be divided by partitions 6, 7 extending a part or the whole way down the bag. Additional pockets, 9 for an umbrella, golf club, &c., 12 closed by an interlocking fastener 13 for balls &c., may be provided. The top edge 8 of the compartment 1 and the tops of the surrounding pockets are inclined at about an angle of 45‹ to the axis of the bag so that the heads of the clubs may nest one above the other. An outer casing 5 is provided which extends into a hood 10 closed by an interlocking fastener 11 or by lacing or otherwise. A flexible handle 14 is connected at one end to the top of the compartment 1 and at the other to an adjustable strap connection 15. The bag and its pockets may be wholly or partly of leather, canvas, fabric, imitation leather or the like.
Patent GB-202183-A (GB)
Title: Improvements in pencil holders
IPC: B43K21/04
Filed: 1922-09-08
Abstract: 202,183. Fairweather, W. C., (Simplo Fullfeder Ges. Voss, Lausen, & Dziambor). Sept. 8, 1922. Pencil-hodders.-The lead 13 of a pencil-holder is projected by the release of a slidable push-rod 5, which can be held in any position by a clutch consisting of inner and outer members 4, 3 with adjacent conical surfaces gripping between them an annular series of balls 61 projecting slightly from spherical recesses 6 in the surface of the member 4, and also projecting within an axial bore 42 to grip frictionally the push-rod 5 extending through the inner cone and abutting against the inner end of the lead 13. The member 3 is integral with a tube 2 secured with. in the upper end of th casing 1 and the bottom of the tube provides a guide for a stem 41 on the underside of the cone 4, and also provides a seating for a helical spring 12 surrounding the stem and exerting an upward pressure upon the cone 4. A tubular stem 7 at the top of the inner cone is also surrounded by a helical spring 11, and at its upper end engages a guide-piece 8, which is connected to a slidable sleeve 10 upon the tube 2 by a transverse pin 17 extending through longitudinal slots 9 in the tube. To project the lead, the pencil-holder is held point downwards, and the sleeve 10 is moved down, thereby pressing the plug 8 upon the tube 7 to depress the inner cone 4 and relax the pressure upon the balls 61, allowing the push-rod 5 to fall until sufficient lead is projected. Upon releasing the sleeve 10, the guide 8 and cone 4 return to their normal positions under the pressure of springs 11, 12, and the balls again grip the push-rod. To push the lead within the casing, the pencil is held by the sleeve 10, and the lead point is pressed upon the writing surface. In a modification, the tube is slidable between limiting stops within the casing, and when pushed inward carries the conical clutch members and the push-rod with it, the lead point being projected a corresponding distance. A helical spring around the push-rod bears against the end of the tube, and forces it back to its original position when the sliding pressure is released, whereupon the spring acts upon the ballcarrying cone and the grip upon the push-rod is re-established. In another modification, the tube slidable within the casing is operated by a cap at the end of the holder, and the tubular stem projects through the cap. On pressing upon the projecting end of the stem, the push-rod is freed and the lead point can be pushed within the casing.