baber/WOPTO huggingface dataset:
Patent GB-747777-A (GB)
Title: Improvements relating to electrical waveguides
Inventor: MELVILLE WILLIAM SIMM
IPC: H01P11/00
Filed: 1953-09-18
Abstract: In the manufacture of electrical waveguides and waveguide junctions for ultra high frequency electromagnetic waves a metal coating is sprayed or deposited from vapour onto a shaped former. Successive coatings may be applied by different processes.  The former may consist of polythene, distrene or polytetrafluoroethylene which have dielectric properties and may be retained in the waveguide as a solid dielectric.  When the former is to be removed the metal wall is strengthened by applying an external coat of insulating thermo-setting plastic.  This may be moulded on the metal or formed by strips of textile impregnated with setting material the strips being wrapped around the wave guide and then heat treated.
Patent GB-482132-A (GB)
Title: Improvements relating to centrifugal fans or blowers
IPC: F04D29/46
Filed: 1936-09-23
Abstract: 482,132. Centrifugal fans. FINDLAY & SONS, Ltd., W., and FINDLAY, D. M. Sept. 23, 1936, No. 25868. [Class 110 (i)] In a centrifugal fan or blower, such as for a smith's forge f, the main discharge d has an additional outlet a with a scoop or baffle j to withdraw air at high pressure, such as for a blowpipe. The outlet a is immediately in advance of the impeller chamber b and is at right-angles to the tube d, the baffle being in advance of the outlet a. The baffle j consists of a split tube with one side bent vertically. The discharge d leads to the nozzle e, and may have the usual slide valve g.
Patent GB-1036679-A (GB)
Title: A method of treating a liquid containing dissolved constituents
IPC: C02F1/24
Filed: 1965-06-18
Abstract: Liquid to be treated enters a riser 1 through channel 2 and is treated by a dispersion of air from supply 5 in precipitant from supply 7. The floated flocculated precipitate is removed by scraper 16, while the liquid may be further purified by neutralization and flotation in riser tank 20.  Pure water is obtained in channel 28. <PICT:1036679/C1/1>
Patent GB-696531-A (GB)
Title: Improvements in l-section constructional elements
IPC: A47B96/14
Filed: 1951-11-06
Abstract: 696,531. Constructional angle bars. MACKENZIE, J. A. Nov. 6, 1951, No. 25985/51. Class 20(ii) An angle section bar has lines of regularly spaced bolt holes extending longitudinally in its flanges, each line consisting of alternate round and transversely elongated holes 12, 13, Fig. 1, respectively of equal size. Each hole 13 is of width equal to the diameter of a hole 12 and of length equal to the diameter of a hole 12 plus an amount equal to twice the thickness of a a flange, all the holes being transversely aligned and the holes 13 in one line being transversely aligned with holes 12 in an adjacent line. One flange 10 may be twice the width of the other 11. Two bars may be joined together directly at right angles or nested one inside the other or two bars may be joined with their ends abutting by means of a short third bar acting as a splice plate. Two bars may also be joined in various angular dispositions by means of a quadrant gusset plate C, Fig. 6, provided with bolt holes 16. Specification 620,696 is referred to.
Patent GB-983594-A (GB)
Title: Improvements in and relating to electric control apparatus
Inventor: OUGHTON HARRY GEORGE
IPC: H05B3/00
Filed: 1962-07-06
Abstract: 983, 594. Automatic temperature control systems. FORSTER INSTRUMENT CO. Ltd. Oct. 7,1963 [July 6,1962], No. 25988/62. Addition to 931,989. Heading G3R. In a temperature control system as described in the parent Specification wherein a temperature indicating instrument painter obscures a photocell from a light source, and offset between cell and source is reduced by movably mounting the cell and source, the cell and source are fixed relatively and the motor 34 Fig. 1 drives the slider 69 of a bridge circuit 66 so that the offset is reduced electrically. In a simpler arrangement Fig. 5 the contacts 47, 50 previously energizing the motor 34 are utilized instead to inject a voltage aiding or opposing the photo-cell current. As an alternative the arrangements 66, or 47, 50 can be interposed between the temperature sensing element and the indicating instrument.
Patent GB-691212-A (GB)
Title: Improvements in rotatable wood cutting tools
IPC: B27G13/10
Filed: 1950-10-25
Abstract: 691,212. Cutter heads. TONG, M. P. Oct. 25, 1951 [Oct. 25, 1950], No. 25995/50. Class 145 (i). A cutting head comprising a rotatable block having detachably mounted cutters projecting from the periphery has dovetail recesses in balanced symmetry, the recesses opening into one end face and extruding only partly through the thickness of the head, and cutter-retaining wedges co-operating with the recesses to form spaced and inclined clamping edges at an angle .to the head axis. The wedges 8 fit slidably in the dovetail recesses 6 to grip the cutters 9 when urged thereto by the screw bolt 14 passing through a countersunk hole 15 and engaging a tapped hole 16. The head 19 of the bolt is engaged by a key through the hole 20. As a further retaining device, a bush may fit in the counterbore and be held therein by a taper pin. The wedges are restrained from outward movement by screws 23 engaging the floor of the recess and passing through slots 24 in the wedges. A hole 12 is provided to enable a drift to be used on the cutters. Specification 647,437 is referred to.
Patent GB-406941-A (GB)
Title: Improvements in or relating to combined compressed-air and magnetic-rail brakes
IPC: B61H7/08
Filed: 1933-09-20
Abstract: 406,941. Electric rail brakes. KNORRBREMSE AKT.-GES., 9, Neue Bahnhofstrasse, Lichtenberg, Berlin. Sept. 20, 1933, No. 26027. Convention date, Sept. 27, 1932. [Class 103 (i).] In a combined compressed air and magnetic rail brake the rail brake magnets 9 are subdivided into separate groups, one or all of which can be energized to give a partial or full braking when the electromagnetic rail brake alone is being used, the groups being energized by compressed air operated switches 21, 22 controlled by a driver's valve 20. The magnets are energized from battery 7 through a switch 16 which is normally closed. The rail brakes 9 are first lowered on to the rail by a cylinder 8 controlled by pneumatic lock 10 and electromagnetic valve 11. The track brake circuits are also closed by pneumatic switch 13 on emergency operation of the compressed air brakes controlled by driver's valve 6 and train pipe 5.
Patent GB-1446130-A (GB)
Title: Couplings for fluid lines
IPC: F16L37/252
Filed: 1974-06-12
Abstract: 1446130 Releasable pipe couplings PARKERHANNIFIN CORP 12 June 1974 26059/74 Heading F2G A pipe coupling comprises a pair of identical body elements 10, 11 each provided with a flow passage 17 therethrough and a pair of projections 20 thereon at one end with recesses 21 to receive lugs (not shown) on the other body element in interlocking engagement on coupling the elements 10, 11 together followed by relative rotation to engage the lugs with the recesses 21, an inwardly projecting flange 25 being provided within each element 10, 11 to retain thereon a gasket 13 of elastomeric material each gasket having an outer annular groove 30 to receive the associated flange 25, a central bore 35 outwardly flared at the ends, and frusto-conical end faces 31, 32, the gasket being symmetrical about the groove so that it may be reversed end to end on its flange 25. On coupling the elements 10, 11 the gaskets 13 initially contact one another at edges 41, and on interlocking of the elements the gaskets are compressed together between internal shoulders 26 in the elements to provide a fluid tight seal.
Patent GB-1509616-A (GB)
Title: Flash attachment for self-developing collapsible cameras
IPC: G03B17/50
Filed: 1975-06-19
Abstract: 1509616 Electronic flash units ITT INDUSTRIES Inc 19 June 1975 [25 June 1974] 26102/75 Heading G2X An electronic flash attachment for a selfprocessing camera has a flash-lamp and reflector housing 16 releasably mountable on top of the camera, e.g. by an electrical contact member 14, and a separate power pack assembly 18 mountable on the bottom of the camera by an extension 19 and rail members 10 which provide a press-fit. The lamp and power pack are inter-connected by a flexible cable.
Patent GB-329920-A (GB)
Title: Improvements in or relating to cooking stoves
IPC: F24B1/24
Filed: 1929-08-28
Abstract: 329,920. Svenska Aktiebolaget Gasaccumulator. Oct. 11, 1928, [Convention date]. Cooking-stoves of the type comprising a metal heat-accumulator and a fuel reservoir are provided with a hot-plate 2 which is in heat-conducting communication with the metal fuel reservoir 3, the two forming the heat accumulator. The hot-plate and reservoir may be in one casting, or, to enable the latter to be made of more heat-resisting but less easily worked metal such as chromiumnickel steel, ferro-chromium, or white pig-iron, the two may be separate and joined by casting or other means. Alternatively, only that part of the fuel-receptacle most exposed to the fire may be formed of the more heat-resistant metal. The joint formed between the two cast parts may be of an interlocking nature. A tubular part 1 surrounding the reservoir supports the hot-plate.
Patent GB-1358629-A (GB)
Title: Containers
IPC: B65D5/68
Filed: 1973-02-26
Abstract: 1358629 Tray and cover METAL BOX CO Ltd 26 Feb 1973 [5 June 1972] 26184/72 Heading B8P A paperboard cover for a plastics thermoformed tray comprises a top panel 1 which can be torn along lines of perforations 2 and slits 3, and locking panels 9 which are hinged to the lower edges of side panels 6 and are folded upwardly into the cover. The free edges 10 of the panels 9 engage downwardly facing surfaces formed on the tray to secure the cover to the tray. The downwardly facing surfaces may be part of a step 13 in the tray side walls, the under. surface of a flange (15, Figs. 6 and 7) extending outwardly at the top of the tray or recesses (16, Fig. 8, 17, Fig. 9) in the tray bottom or at the junctions between the tray side walls and bottom. The depth of the side panels 6 may be greater than that of the tray (Figs. 7, 8 and 9). The tray includes egg-receiving pockets 12.
Patent GB-1224897-A (GB)
Title: Crosslinking unsaturated polyesters
IPC: C08F283/01
Filed: 1968-05-31
Abstract: 1,224,897. Unsaturated polyesters. GENERAL TIRE & RUBBER CO. 31 May, 1968 [2 June, 1967], No. 26306/68. Heading C3P. An unsaturated polyester having an average molecular weight of 1000 or more and an average of 6 to 110 ethylenic double bond unsaturations per molecule in the main chain, and in which polyester 50% or more of said double bond unsaturations are maleate unsaturations is crosslinked by (a) blending, with every one mol.- equivalent unsaturation of said polyester, one to four mols. of a vinyl ester compatible with the polyester and represented by the structural formula in which R is an alkyl group containing 1 to 8 carbon atoms or an aryl, aralkyl or alkaryl group containing 6 to 12 carbon atoms and a curing catalyst for the same; and (b) curing to a thermoset product. In the examples polyesters prepared from maleic anhydride, phthalic anhydride and propylene oxide are cross-linked with styrene and vinyl benzoate using a benzoyl peroxide catalyst. In Example 2 a glass fibre mat laminate is made using clay as a filler.
Patent GB-1080921-A (GB)
Title: Improvements in or relating to automatic sound reproducing apparatus
Inventor: DRAPER ALBERT ERIC
IPC: G11B17/16
Filed: 1964-07-25
Abstract: 1,080,921. Automatic record changers. S. KOROBUK Ltd. Oct. 20, 1965 [July 25, 1964; Feb. 10, 1965], Nos. 26339/64 and 15779/65. Heading G5R. In an automatic record-changer the usual cycling-cam raises and then rocks a lever which first lifts the stylus from the record and then swings the pick-up arm outwardly to a stop position, after which the next record drops on the centre post to the turn-table and the drive between lever and pick-up arms slips as the lever continues its outward angular movement until stopped by a member set according to the diameter of this record, thereby determining the correct subsequent inward movement of the pick-up arm by the lever. The cycling cam 13, whose operation is initiated as the stylus enters the record run-out groove, consists of a cam edge 14 and a cam face 15 co-operating with respective rollers 32, 33. The roller 33 is mounted on a lever 26 pivoted at 27 and the roller 32 is mounted on a lever 29 pivoted at 28 to lever 26 and urged by a spring 31 into contact therewith. The cam face 15 first raises the lever 26 which through a (lug 37 and slot 34) connection lifts a sector-shaped lever 35 pivoted to a rotatable post 21 whereby the stylus is lifted from the record, as one of the radial grooves 36 in the sector lever 35 engages a pin 25, through a linkage 22, 24. Thereafter, the cam edge 14 through levers 26, 35 and the drive 25, 36 swings the pick-up arm 16 outwardly to its stop position. The next record now falls on to the turn-table 12 and if it is a 10<SP>11</SP> or 12<SP>11</SP> record rocks a trigger 53 which sets a stop lever 56 in a position according to the record diameter, a detent 59 holding the stop lever in its set position. The drive 25, 36 slips as the lever 26 continues its outward movement. This movement is halted by the appropriate stop 58 on the stop lever as the pin 25 enters the appropriate groove 36 in the sector lever 35. Thereafter, continued outward movement of the cam edge roller 32 causes the lever 29 to pivot about lever 26 until the roller 32 reaches the cam edge peak portion 42 after which lever 29 returns to engage lever 26 which then moves the pick-up arm inwardly. Finally, the cam face 15 causes lever 26 to move downwardly, thereby dropping the stylus into the run in groove and breaking the drive connection between 25, 36. The stop lever 56 is reset at the end of each cycle to a position in which the stops 58 are withdrawn out of the path of lever 26. When a 7 inch record is dropped the trigger 53 is not actuated and the lever 26 moves to its maximum outward position as determined by the peak 42 of the cam edge when the pin 25 engages the appropriate groove 36 in lever 35. In another embodiment a single cam causes both vertical and horizontal movements of the pick-up head.
Patent GB-409656-A (GB)
Title: Improvements relating to the voltage regulation of alternating current systems
IPC: H02M5/12
Filed: 1932-09-24
Abstract: 409,656. Supply systems. GANZ ES SARSA VILLAMOSSAGI GEP. WAGGON ES HAJOGYAR RESZVENYTARSASAG, 31, Kobanyai-Ut, Budapest. Sept. 24, 1932, No. 26589. Convention date, Sept. 24, 1931. Addition to 322,500 [Class 38 (iv)]. (Class 38 (iv).] Boosting by static transformers.-In a voltageregulating arrangement according to the parent Specification in which at least two closed flux paths I, II are provided each having a coil S<1>, S<2> series connected across the A.C. voltage to be regulated, a coil g', g<2> which is loaded by a variable resistance, the coils being alternatively connected together through resistances k<1>, k<2>, and each having a coil connected in series with the load only one of the closed flux paths carries a series coil f<2> so as to give a regulation in one sense only when the coils g<1>, g<2> are alternatively loaded or connected together. Reference has been directed by the Comptroller to Specification 258,885, [Class 38 (ii)].
Patent GB-1507884-A (GB)
Title: Gas analyzers
IPC: G01N21/35
Filed: 1975-06-23
Abstract: 1507884 Photo-electric gas analyzer circuits FORD AEROSPACE & COMMUNICATIONS CORP 23 June 1975 [24 June 1974] 26620/75 Heading G1A In a gas analyzer of the type where a beam of radiation passes alternately through a pair of gaseous filters prior to passing through the sample to a detector, the detector circuitry includes an amplifier which is modulated at the same rate as the switching of the beam between the filters, so as to remove any A.C. component of the detector output due to inequalities in the average transmissivities of the two filters. In Fig. 1, radiation from source 12 passes to detector 17 via a rotating assembly 11 containing the two gaseous filters. The beam passes through a sample at 15, to measure the amount of a particular gas in the sample. The particular gas is present in one of the filters of assembly 11, while the other filter either contains the same gas at a higher pressure or a non absorbing gas; in either case the average transmissivity of the filters in the spectral range to be investigated must be approximately equal. The range investigated is set by a filter 18. Assembly 11 also carries a chopper 33; the assembly rotates at 30Hz, and the chopper produces a 360 Hz signal. The detector signal alternates at 30Hz between levels corresponding to the sample absorption when each of the gaseous filters is in the beam. In the absence of the particular gas in the sample the 30Hz signal would be zero if the two filters had equal average transmissivities; the circuit in Fig. 1 allows this signal to be zeroed if the filters are not exactly matched. The detector signal is amplified at 20, 21, and passes via variable gain amplifier 22 to modulator 23. The variable gain amplifier is controlled by the output of a demodulator 24 to give compensators of source brightness variations etc. The demodulated signal is the desired 30Hz information, and this passes via 27, 28 and 30 to a demodulator 31 where a D.C. component representing the amount of the particular gas is produced for display at 40. To allow this indication to be set to zero in the absence of a sample, the modulator 23 receives a suitably phase and amplitude adjusted 30Hz signal from a pickup 22 via 35-38 and 41; the resulting modulation imposed at 30Hz in the modulator cancels any 30Hz component due to imbalance of the filters. The gaseous filters need not be movable and can be replaced by fixed cells through which the beam path is alternated. A detailed circuit and component values for effecting Fig. 1 are given, Fig. 2 (not shown).
Patent GB-224699-A (GB)
Title: Improvements in combined filling and closing machines for cans
IPC: B21D43/14
Filed: 1923-10-25
Abstract: 224,699. Armstrong, J. J. V., (Continental Can Co., Inc.). Oct, 25, 1923. Seaming; assembling can heads and bodies.-A combined filling and closing machine for cans comprises a filling-machine and a closing-machine, each having a support on which the cans are continuously moved, a support extending from the filling-machine to the closing-machine, and means for positively moving the cans along the support continuouslv and in timed relation with the devices moving the cans along the supports of the filling and closing machines. Empty cans, fed from a feed drum 19, are moved along a circular table 18 by arms 17 on a turret 16 which forms part of the filling-machine and is rotated by a shaft 20 driven by a shaft 27 through a clutch 24, 25. Straight supporting members 38, 39, level with the table 18, are disposed at a tangent to the path of the cans on the table 18 and above the shaft 27 so that a thread 36, on a drum 35 surrounding the shaft, projects between them and in rotating moves the cans along the supporting members, lateral displacement being prevented by a guide member 40. The pitch of the thread 36 is less in the middle than at the ends of the drum 35, so that the movement of the cans is slowed down thereby and their inspection facilitated. The remote ends of the members 38, 39 and the drum 35 meet tangentially a rotary assembling turret 8 which places the covers on the tins and is formed with half-moulds 10 adapted to receive the cans and operate in conjunction with half-moulds on an adjacent rotary closing turret 2 to round up the cans preparatory to the closing thereof. To ensure synchronization of the filling and closing machines, the shaft 27 is driven through bevel gearing by the rotating turret 8 which in turn is driven from the closing turret 2.
Patent GB-1359067-A (GB)
Title: Shear stable multiviscosity grade lubricating oils alphaolefin polymers of controlled molecular size and distribution and method of preparation
IPC: C08F10/14
Filed: 1972-06-08
Abstract: 1359067 Olefin polymers GULF RESEARCH & DEVELOPMENT CO 8 June 1972 [14 June 1971 (2) 18 April 1972 (2)] 26719/72 Heading C3P [Also in Division C5] Alpha-olefin polymers produced from a C 5 -C 12  α-olefin or mixture of C 3 -C 12  α-olefins with at least 20 mol. per cent of C 5 -C 12  α- olefins and having a weight average molecular weight Mw of 50,000 (M/84) to 1,000,000 (M/84), a number average molecular weight Mn of 4,000 (M/84) to 1,000,000 (M/84) where M is the molecular weight of the α-olefin or average molecular weight of the mixture of α-olefins, and a distribution factor Mw/Mn of 1 to 12, the upper limit of said distribution factor being 12 when Mw is 50,000 (M/84) and 2 when Mw is 1,000,000 (M/84) with the upper limit of the distribution factor proportionately decreasing from 12 to 2 as Mw increases from 50,000 (M/84) to 1,000,000 (M/84), may be prepared by reacting the monomers at 38 to 121‹ C. in the presence of hydrogen at a partial pressure of 0À007 to 10À5 kg/cm<SP>2</SP> and a Ziegler-Natta catalyst useful for the polymerization of propylene at an olefin to catalyst weight ratio of 300 to 6000. The olefin may be 1-pentene, 1-hexane, 4-methyl-1-pentene or 1-decene, optionally in admixture with propylene, 1- butene, isobutylene or 1-octane. Preferred catalysts are titanium and vanadium halides mixed with aluminium alkyls and alkyl halides. The process may be effected batchwise or continuously, optionally in the presence of modifiers such as zinc chloride or diethyl zinc. The products may be used to improve the viscosity characteristics of lubricating oils. Examples describe the preparation of (1 to 3 and 5 to 28) polyhexenes and (4) polydecene in the presence of aluminium activated titanium trichloride and triethyl aluminium.
Patent GB-1036788-A (GB)
Title: A rolling or section mill
IPC: B21B13/10
Filed: 1963-07-05
Abstract: 1,036,788. Rolling. THEODOR WUPPERMANN G.m.b.H. July 5, 1962 [July 25, 1962 (2)], No. 26808/63. Heading B3M. A rolling mill comprises roll shafts la and 1b mounted in adjustable chocks 4-7 and carrying overhanging cantilevered horizontal rolls. Of the chocks, all of which are vertically adjustable by screws 23 and 24, chocks 4 and 5 are axially movable whilst chocks 6 and 7 are axially fixed by stops 10. Vertical rolls 31 are provided in carriers 28 and are adjustable by screws 29, the left-hand roll being mounted in a separate frame 35 which is connected by tierods to the main frame. The drive of each shaft la and 1b is from a bushing 13 having a splined or polygonally shaped interior bore corresponding to the shaft profile, a pin or cotter 14 preventing relative axial movement of the parts. The mill may be used for cold rolling.
Patent GB-912279-A (GB)
Title: Improvements in or relating to oxygenated derivatives of cellulose
IPC: C08B11/187
Filed: 1959-08-05
Abstract: Allyl cellulose made according to Specification 831,969 is reacted with an oxygenated reagent to obtain an oxygenated cellulose derivative, having from 0,1 X 10-2 to 10 X 10-2 active oxygen moles per 100 gms. of substance. Oxygenated reagents are members of the group comprising atmospheric or pure oxygen, ozone, air-ozone and oxygen-ozone mixtures, and organic peroxides, e.g. benzoyl and cumene peroxides and perbenzoic acid.  Organic peroxides may be applied as solutions in benzene.  Oxygen may be reacted with the allyl cellulose in the presence of visible light, of infra-red or ultra-violet radiation, or of g -rays.  The allyl derivatives may be those derived from natural cellulose, e.g. sisal, ramie, jute, linen, hemp or wood fibres, or from artificial cellulosic substances, e.g. regenerated cellulose, and cellulose esters and ethers.  The oxygenated derivatives obtained may contain peroxide, epoxy and ozonide groups and enable the fixation of a large number of chemical groups on the cellulose chain and also the grafting of unsaturated monomers without the addition of a polymerization catalyst.