baber/WOPTO huggingface dataset:
Patent GB-932999-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J19/74
Filed: 1961-02-09
Abstract: 932,999. Cooling discharge apparatus. M-O VALVE CO. Ltd., and H. L. GIBSON. Feb. 9, 1962 [Feb. 9, 1961], No. 4879/61. Class 39 (1). A thermionic valve has at least one electrode arranged to be cooled in operation by virtue of being in good thermal contact with an external cooling member made of a ceramic material having a thermal conductivity of at least 0.1 watts/cm. ‹C. In a preferred arrangement, a tubular body 9 made of an alumina, magnesia or beryllia based ceramic is in good thermal contact with tin anode, within a tubular envelope 1 of the valve, via a disc 6 of high thermal conductivity, a series of slots 10 being formed in the wall of the tube 9 to allow air to be blown through the interior of the tube. Alternatively, external cooling fins made of the ceramic material can be directly secured to an electrode, or a water jacket of a water-cooled thermionic valve can be made of the ceramic material.
Patent GB-285492-A (GB)
Title: Improvements in toothed gearings
IPC: F16H55/16
Filed: 1928-02-16
Abstract: 285,492. Aktiebolaget Ljungstr÷ms Angturbin. Feb. 18, 1927, [Convention date]. Toothed wheels.-At. least one of a pair of helical toothed wheels 1, 2 has the tooth spaces 7 considerably deeper than usual and the thickness of the teeth 6 at the pitch circle considerably less than the width of the tooth spaces. The active parts of the teeth may be thicker than the sub-roots, though necessarily thinner than the teeth 5 shown. The teeth of the wheel 2 may be similar to the teeth 6, or of normal profile 11 but of greater thickness than normal as shown at 9. In modifications, the teeth of the wheel 2 may be normal in all respects, in which case there will be play between the engaging teeth, or may be similar to the active parts of the teeth 6 but without deepened spaces. Spaces of exceptional depth may be made between groups of two or more teeth. Where one wheel only, preferably .the smaller, is provided with the deepened and widened spaces, it is made axially broader than the other wheel. In such construction, however, only the sub-roots of the teeth need be extended beyond the breadth of the other wheel. The spaces are preferably produced by milling, and part of such operation may be performed by an end-mill.
Patent GB-576510-A (GB)
Title: Improvements in or relating to the production of cellulose
IPC: D21C3/00
Filed: 1944-03-16
Abstract: Cellulose is obtained from cereal straw by treating it with 5 to 25 per cent of its dry weight of hydrogen peroxide in an aqueous solution of an alkali metal hydroxide.  The concentration of the alkali metal hydroxide is preferably between 0.25 and 5 per cent, and the temperature between 30 DEG  and 65 DEG  C., for example, the straw may be treated with 10-20 per cent of hydrogen peroxide in a 0.5 to 2.5 per cent aqueous solution of an alkali metal hydroxide at 50 DEG  to 60 DEG  C.  The treatment may be carried out in two or more stages.  The straw is advantageously subjected to a pretreatment with an aqueous solution of an alkali at a temperature not less than 100 DEG  C., for example, with an aqueous solution of an alkali metal hydroxide of concentration 0.5 to 2 per cent at 115 DEG  to 125 DEG C.  In a modification, the hydrogen peroxide in an aqueous solution of an alkali metal hydroxide is replaced by a solution of an equivalent quantity of an alkali metal peroxide which is prepared at a temperature below 5 DEG  C. and used at 30-65 DEG  C.  The crude cellulose obtained by the process may be bleached and then given successive treatments with cold, fairly concentrated and hot dilute solutions of alkali.  The products are suitable for conversion into cellulose esters and cellulose ethers, and also for the production of viscose and for paper-making.  In an example, 100 parts of chopped, sieved straw are treated with 2 per cent sodium hydroxide solution at 120 DEG  C., washed and disintegrated.  The product is immersed in 1500 parts of 1 per cent sodium hydroxide solution containing 15 parts of hydrogen peroxide and the temperature raised to 50-60 DEG C.  The crude cellulose is then bleached with calcium hypochlorite, treated with 12 per cent sodium hydroxide solution, washed, boiled with 0.5 per cent sodium hydroxide solution and finally bleached with dilute calcium hypochlorite solution.  A second example illustrates the treatment of the pretreated straw by means of hydrogen peroxide in two stages and a third example shows the effect of using only 5 parts of hydrogen peroxide to each 100 parts of straw.
Patent GB-368949-A (GB)
Title: Improvements in or relating to desks and like articles of furniture
IPC: A47B41/04
Filed: 1931-02-18
Abstract: 368,949. Desks. EDUCATIONAL SUPPLY ASSOCIATION, Ltd., 171, High Holborn, London, and HARRISON, C. N., 6, Moorland View, Forest Lane, Starbeck, Harrogate, Yorkshire. Feb. 18, 1931, Nos. 5100 and 17247. [Class 52 (iii).] A desk or like top, in addition to being pivoted to enable it to be inclined, and to being slidably adjustable in its own plane, is adapted to be removed from and replaced upon the supporting structure of the tilting device and to be pulled out to a position in which it rests on the knees of the user. The Figure shows a desk with a top 1 adapted to slide upon supports 2 pivoted on an axis 3 on an underframe 4. It is variedly inclinable by means of stays 5 and notched racks 6, and the stays 5 for this purpose may have hinged extensions 7. The support battens 2 have grooves 10 and notches 14 to receive a pin in each edge of the top 1, which may by these means be adjusted in its own plane or swung forwards until its lower edge rests on the knees of the user. Spring clips 11 are also fitted to the underside of the top 1 so as to engage half-round or like strips 12 fitted to the inner sides of the battens 2 ; these strips are fitted with stops 13. In a modification the X-form support is replaced by a structure resembling a school desk, with a recess into which the parts 2, 5, 7 may be folded when it is desired to use the device as an art desk. A shelf 17 carries an inkwell and like articles.
Patent GB-395639-A (GB)
Title: Apparatus for feeding cigarettes from a supply chamber and for stacking the same in regular columns
IPC: B65B19/10
Filed: 1933-02-20
Abstract: 395,639. Packeting-machines. POPOV, V. D., Zelena 743/III, Bubenec, Prague. Feb. 20, 1933, No. 5177. Convention date, June 13, 1932.. Addition to 348,962. [Class 94 (i).] The apparatus described in the parent Specification is modified by the provision of a chamber E beneath the three oscillatory rollers c, c<1>, c<2> and above a series of vertical channels Dl .. D5. The cigarettes pass from the chamber C to the channels either between the rollers c, c<1>, c<2> or through channels 4, 4a formed by the outside rollers and walls 5, 5a.
Patent GB-1139161-A (GB)
Title: Improvements in and relating to a machine for shaking moulds containing concrete
IPC: F16H53/02
Filed: 1966-02-07
Abstract: 1,139,161. Shaking moulds for concrete. SCHOKBETON N.V. 7 Feb., 1966 [5 Feb., 1965], No. 5211/66. Heading B5A. A machine for vibrating a mould for concrete comprises a stationary base supporting an electrically-driven shaft 2 which is connected by a key 3 to a profiled cam 1. This cam supports through nearly all its rotation a follower roller 6 mounted by plates (10), (11) and a ball-race (9) on a shaft (8) secured beneath a table supporting the mould. As the cam rotates it contacts the follower 6 at O and on further rotation lifts the follower until it reaches M, a point of maximum lifting. On further rotation past M, the follower 6 drops freely under gravity until the table contacts an abutment. The cycle is then repeated to shake the mould. There are at least two parallel shafts 2 each carrying a cam 1 at each end, and a series of abutments.
Patent GB-593352-A (GB)
Title: Improvements in and relating to means for minimising secondary radiation in x-ray apparatus and methods for the manufacture thereof
IPC: G21K1/02
Filed: 1941-04-23
Abstract: 593,352. R÷ntgen-ray apparatus. GENERAL ELECTRIC CO., Ltd., and CALDWELL, J. T. April 23, 1941, No. 5253. [Class 98 (i)] A grid diaphragm for minimising secondary X-ray radiation in radiography comprises a solid body of material transparent to the rays and having embedded in it a number of spaced layers of a metal impervious to the rays. The diaphragm may be made by bonding a thin sheet of the metal, for example lead, to a sheet of the transparent material, for example cellulose acetate, cutting the bonded sheets into strips, assembling the strips face to face with the metal layers spaced apart, and bonding the assembled strips into a solid body by applying a solvent, preferably containing cellulose acetate, to their edges. A sheet of the transparent material may be bonded to each face of the assembly of strips. In one method of forming the grid, a layer of lead about .002 inches thick is sprayed on to a sheet of cellulose acetate about .015 inches thick. Strips about .08 inches wide are cut by rotating cutters from the sheet, and a number, say ten, are arranged vertically on a platform on which the assembly is held between a guide and a clamping member while the exposed edges of the strips are painted with the solvent. The assembly of strips is reversed top for bottom, and the solvent then applied to the opposite face. A number of the so-formed units are then bonded together in a similar manner, and sheets of cellulose acetate are subsequently bonded to the two faces. Focused and radial grids may also be made.
Patent GB-942129-A (GB)
Title: Improvements in or relating to grommets and like closure or sealing devices
Inventor: NEWMAN ALFRED WILLIAM ARTHUR
IPC: H02G3/08
Filed: 1959-02-16
Abstract: 942,129. Grommets. H. G. MILES Ltd., and AUSTIN MOTOR CO. Ltd. Jan. 6, 1960 [Feb. 16, 1959], No. 5255/59. Heading H2E. [Also in Division F2] A grommet 9 comprises a tubular body 1 and a head 3 with flange 4, there being an annular groove 5 between head and body. In use, the grommet is pressed into a hole in a panel so that the panel edge enters the groove to distort the head and seal the flange against the panel. The flexible funnel around aperture 8 seals against a cable passing therethrough.
Patent GB-510855-A (GB)
Title: Improvements in hydraulic shock absorbers
IPC: F16F9/26
Filed: 1939-02-17
Abstract: 510,855. Hydraulic shock-absorbers. GENERAL MOTORS CORPORATION. Feb. 17, 1939, No. 5313. Convention date, Feb. 28, 1938. [Class 108 (iii)] In a hydraulic shock-absorber having two fluid displacement chambers connected by ducts each of which has a valve chamber and valve, one of the valves has constantly open orifices connecting two oppositely disposed annular grooves in the valve, and baffling.means is provided for restricting the flow of fluid into and from each'groove, the valve seat providing the baffling means for one groove and a rigid disc carried by the valve providing the baffling means for the other groove. As shown in Fig. 2 pistons 33, 34 connected by bolts 35 are movable by a lever arm 38 housed in a recess in the pistons and between contacting wear pieces 39 therein. A spring-loaded valve 51 in each piston obturates a passage 50 leading to an oil reservoir in the casing and acts as an oil replenishing valve to the chambers 45, 46. The compression chamber 45 is provided with a duct 60 controlled by a valve 71, Fig. 3, in a chamber 61 provided with an outlet 64 leading into a duct 62 from the rebound chamber 46. The duct 62 is controlled by a one-way valve 62a in a chamber 63 having an outlet 65 leading into the duct 60. The valve 71, Fig. 3, is recessed at 73 and 77 on opposite faces which are in communication through restricted orifices 78. A spacing washer 81, Fig. 4, is placed over the back of the valve and a baffle 80 is pressed against the washer by a spring 94. On compression liquid from chamber 45 passes through duct 60, around valve stem 75 to groove 73, and through throttling orifices 78 to groove 77. From groove 77 the liquid issues through space 85 between baffle 80 and valve 77 and passes through outlet 64 to chamber 46. If the compression shock is excessive the valve 71 lifts off its seat and liquid flows direct to outlet 64. The liquid also enters outlet 65 into valve chamber 63 but only acts to press valve 62a more firmly on to its seat. On rebound the liquid from chamber 46, if the rebound is excessive, lifts valve 62a off its seat and liquid flows through outlet 65 to duct 60, otherwise liquid flows into outlet 64, valve chamber 61, space 85, groove 77, restricted orifices 78, groove 73 and around valve stem 75 to duct 60. The baffle 80 and valve seat 72 which acts as a baffle, in combination with grooves 73, 77 which act as expansion chambers, prevent any noise emanating from the passage of liquid passing through restricted orifice 78.
Patent GB-1048095-A (GB)
Title: Reinforced shopping bag
Inventor: CANNO LEONARD E
IPC: A45C3/04
Filed: 1964-02-10
Abstract: 1,048,095. Carrier bags. EQUITABLE PAPER BAG CO. Inc. Feb. 10, 1964, No. 5437/64. Heading A4G. A shopping bag is formed from a web 10, Fig. 1, which is cut along portions 18 offset from the line 20 along which bag lengths are later severed and to which is secured a pair of cord handles 14 by patches 16 and a re-inforcing strip 24 extending across and bonded to the full web width and positioned near the bottom inside of the bag length so that when the bottom is folded the fold line 26 lies within the strip and the folded bottom edges of the wide sides of the bag overlap a distance a Fig. 3 to give, with the reinforcement, a substantially uniform double thickness. The bottom edges of the narrow sides fold over a shorter distance and do not overlap but give a quadruple thickness at parts of the bag bottom. The bottom is then folded to give a self-opening square bottom bag with the reinforcement extending around the corners and partly up the walls.
Patent GB-124295-A (GB)
Title: Baling-wire Straightening and Measuring Machine.
Inventor: STEWART JOHN
IPC: B21F1/02
Filed: 1918-03-30
Abstract: 124,295. Stewart, J. March 30, 1918. No Patent granted (Scaling fee not paid). Stretching.-An apparatus for straightening baling and other wires after use, and for measuring their length so that they can be sorted into various sizes, comprises a bench R to the front of which is attached a hook A over which is placed a loop on the bale wire. The other end of the wire is gripped by grippers D on a sliding head C to which is attached a rod B which can be moved through a clutch member F with grippers F<2>, Fig. 4, which grip the rod 13 when the head F' to which the clutch member is attached is moved to the right by means of pedal or hand-operated lever mechanism E, H, J. The pedal E is actuated to straighten the wire, and a pointer attached to the head C moves over a scale which indicate, the length of the straightened wire. A spring II normally maintains the head F' in contact with a stop K; or a stop-pin is used to restrain the backward movement of the head F<1>, the clutch being open in this position. A slot in the head F<1> moves over this stop-pin.
Patent GB-463345-A (GB)
Title: Improvements in or relating to rotary filters
IPC: B01D33/00
Filed: 1936-02-24
Abstract: 463,345. Filters. DAMAN, A. C. Feb. 24, 1936, No. 5561. [Class 46] A rotary drum suction filter is built up of cast metal sections 32, with flanges 33, which are attached by bolts 34 to projecting edges 31 of the ends 25 of an inner sheet-metal drum 24. The ends 25 are attached by bolts 28 to collars 26 which are feathered on a shaft 7. As shown, the base 40 of each section slopes towards one end which has pipe connections 19 outside the drum 24 to the valve by means of which the sections are successively connected to sources of suction and of fluid pressure for cake discharge. The screen 35 of each section is fixed in rabbets in the sides. In a modified form, the bases of the sections slope from the centre towards the ends, both of which have connections 19 to the valve. Wires 36 are wound round the drum to hold the screens 35 of the sections in position. The assembled sections may be smoothed to cylindrical form in a lathe.
Patent GB-511696-A (GB)
Title: Improvements in or relating to theodolites suitable for sighting on moving objects
IPC: G01C1/02
Filed: 1938-02-22
Abstract: 511,696. Theodolites. ASKANIA-WERKE AKT.-GES. VORM. CENTRAL-WERKSTATT DESSAU UND C. BAMBERG-FRIEDENAU. Feb. 22, 1938, Nos. 5591, 5592 and 5593. Convention dates, Feb. 22, 1937. March 6, 1937, and March 10, 1937. [Class 97 (ii)] A theodolite for sighting moving targets, e.g., balloons, in which a reflecting surface is rotated in front of the view opening to bring the target image into coincidence with a simultaneously observed horizon, has the optical elements arranged so that the target image appears erect at all elevations and does not wander laterally when the theodolite tilts. As shown, the rotatable reflecting prism 5 is arranged so that the sighting ray to the target and the ray - reflected from the prism 5 through the objective 4 to the eyepiece 3 lie in a common vertical plane. Ah auxiliary telescope 9 for observing the horizon has a viewing tube 27 parallel to the axis of the telescope 3, 4, and capable of swing- ing through 180 degrees. The image of the horizon is reflected into the eyepieces 3 by a double prism 6 which permits the target image to pass only through a transparent central strip 28 perpendicular to the horizon. Coarse adjustment of the prism 5 is effected by the knob 17 and gears 16, 15, 14. Fine adjustment is effected by the knob 18, gears 19-22, and friction clutch 23. A vertical circle 11 mounted on the gear wheel 14 may be read at the same time as the azimuth circle 1 by the magnifying device 12. A coarse sighting device may be mounted on the knob 17. In a modification the azimuth circle is replaced by a magnetic compass card. In a further modification a binocular instrument is provided in which one telescope is sighted on the horizon and the other on to the target by means of the rotatable prism 5.
Patent GB-1209255-A (GB)
Title: A track for releasably securing an attachment fitting, and a load restraining apparatus including the track
Inventor: JANTZEN GEORGE HENRY
IPC: B61D45/00
Filed: 1968-02-05
Abstract: 1,209,255. Securing loads in bulk on vehicles. M. STEINTHAL & CO. Inc. 5 Feb., 1968, No. 5601/68. Heading B7C. [Also in Division E2B] A load restraining device comprises a channel shaped track 10 for straps or beams having a pair of spaced lateral apertures 22 extending into the side walls of the track and central apertures beneath raised ribs 19, a strap connector 35 or a beam end support have tongue or tabs which engage the apertures. The strap connector 35 has projecting, lateral tongues 39, 40 of unequal length to enable fitting into a pair of opposed lateral apertures 22 when the track is vertical and into a pair of central apertures when the track is horizontal. The beam end support, Fig. 8 (not shown), is connected to a horizontal track by a lateral tab and a displaceable tab which is liftable against the action of a spring. The tabs engage a pair of lateral apertures 22.
Patent GB-721298-A (GB)
Title: Improvements in or relating to the production of iodine-containing compositions
IPC: C11D3/48
Filed: 1952-03-04
Abstract: Germicidal solid iodine-containing compositions are prepared by reacting iodine, urea and a non-ionic surface-active agent. The iodine and surface-active agent may be first reacted and the compound so formed be then reacted with urea at, say, 15-100 DEG  C. In either case, reaction with urea may take place in the presence of an inert diluent such as isopentane or isohexane and an activator for the urea, said activator constituting not more than 25 per cent based on the weight of the surface-active agent, and being water, methanol or aqueous methanol, the reaction product being recovered by filtration and/or centrifuging.  The iodine may constitute up to 30 per cent of the surface-active agent, and the ratio of the latter to urea is 1 : 1 to 1 : 2 by weight.  The surface-active agents suitably have the formul  R1COO(CH2CH2O)n -CH2CH2OH and R2-O-(CH2CH2O)n-CH2 CH2OH, where R1 and R2 are alkyl groups of 5-50 C atoms, R3-A-O-(CH2CH2O)n-CH2CH2OH, where R3 is an alkyl group of 8-12 C atoms and A is an aromatic group, and R4-S-(CH2CH2O)nCH2CH2OH, where R4 is an alkyl group of 10 C atoms, n being 5-50 in all cases. Examples are given.  Specification 643,456 is referred to.ALSO:Germicidal soild iodine-containing compositions are prepared by reacting iodine, urea and a non-ionic surface active agent. The iodine and surface active agent may be first reacted and the compound so formed be then reacted with urea at say 15-100 DEG C.  In either case, reaction with urea may take place in the presence of an inert diluent such as isopentane or isohexane and an activator for the urea, said activator constituting not more than 25 per cent. based on the weight of the surface active agent, and being water, methanol or aqueous methanol, the reaction product being recovered by filtration and/or centrifuging.  The iodine may constitute up to 30 per cent. of the surface active agent, and the ratio of the latter to urea is 1 : 1 to 1 : 2 by weight.  The surface active agents suitably have the formulae R1COO (CH2 CH2 O)n -CH2 CH2 OH and R2-O-(CH2 CH2O)n-CH2 CH2 OH., where R1 and R2 are alkyl groups of 5-50 C atoms, R3-A-O-(CH2 CH2 O)n-CH2 CH2 OH, where R3 is an alkyl group of 8-12 C atoms and A is an aromatic group, and R4-S-(CH2 CH2 O)n CH2 CH2 OH, where R4 is an alkyl group of 10 C atoms, n being 5-50 in all cases.  Examples are given.  The disadvantages of elemental iodine e.g. high vapour pressure, staining, attack on the skin, &c. are said to be reduced or eliminated by the compounds of the invention.  Reference is made to known "iodophors", consisting of iodine in combination with surface-active agents, e.g. e.g. alkylphenoxypolyglycol ethers. Specification 643,456, [Group IV (b)], is referred to.
Patent GB-1240331-A (GB)
Title: A resilient clip
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: F16B5/12
Filed: 1968-02-05
Abstract: 1,240,331. Clips. F. T. PRODUCTS Ltd. 5 Feb., 1969 [5 Feb., 1968], No. 5684/68. Heading E2B. A clip 10 for attachment to a headed stud 24 comprises a strip of material forming a body portion 11, a head 12 extending outwardly from one end of the body portion 11 at an angle to one side thereof and a tail 13 extending outwardly from the other end of the body portion 11, a slot 15 being formed in the clip, having a wide portion 16 located wholly within the head 12 and a narrow portion 17 extending from the wide portion and terminating in the body portion 11. As shown, a plurality of the clips is used to secure a moulding 20 to a framework 21 surrounding a vehicle windshield 31, the clips being formed with two prongs 18, 19 at the junction of the wide and narrow portions 16, 17 of the slot 15, which overlie the stud head 25.
Patent GB-1190592-A (GB)
Title: Blanking Circuit.
Inventor: MILLWARD JOHN DAVID
IPC: H04N5/067
Filed: 1967-02-07
Abstract: 1,190,592. Transistor pulse circuits; television. RANK ORGANISATION Ltd. 18 Dec., 1967 [7 Feb., 1967], No. 5712/67. Headings H3T and H4F. A television system employs a blanking pulse II having an increase in the rate of rise and in the rate of fall when its amplitude exceeds a predetermined limit corresponding to the maximum amplitude excursion of the video signal X<SP>1</SP>. Such a blanking pulse is applicable for use in a flying spot scanning system using negative film having a large contrast range so that the overall width and rise and fall times of the pulse can be maintained within specified limits without affecting the characteristics of the portion which lies within the video range X. H3T Transistor pulse circuits.-Transistor 2 is driven by a negative-going mixed blanking signal so as to provide an exponential waveform across capacitor 6. Transistor 7 is biased so as to operate only on the linear portion of such waveform and provide portion I (Fig. 2) at the output 14, until diode 11 becomes conductive, when the emitter load is reduced, giving an increase in the rate of rise II until transistor 7 becomes bottomed.