baber/WOPTO huggingface dataset:
Patent GB-1493877-A (GB)
Title: Sensitive photothermographic material
IPC: G03C1/498
Filed: 1975-02-19
Abstract: 1493877 Photo-thermographic material EASTMAN KODAK CO 19 Feb 1975 [19 Feb 1974] 7006/75 Heading G2C A sensitive photo-thermographic material comprises a support and incorporated in a layer or layers, coated on one side thereof, an oxidationreduction image-forming system comprising (a) a light-insensitive reducible metal salt and (b) an organic reducing agent therefor, (c) a photosensitive silver halide which on exposure to actinic radiation forms centres which catalyze the thermallyinduced reaction of (a) and (b) to form a visible image and, as a background stabilizer precursor, (d) a compound of the Formula I: wherein X is a chlorine, bromine or iodine atom and each of R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> is hydrogen, or an alkyl, substituted alkyl, aryl, substituted aryl, acyl, substituted acyl, amido or substituted amido group; or a sulphonyl group of Formula R7SO 2  - wherein R<SP>7</SP> is an alkyl group having 1 to 5 carbon atoms which may be substituted, or an aryl group, which may be substituted, at least one of the group R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> being a nitro, nitroaryl, acyl-oxyalkyl, acyl sulphonyl or amido group. The presence of this group or these groups is believed to be necessary for activating the compound to release halogen on exposure to actinic radiation. Many of the compounds of Formula I act also as anti-foggants. Suitable substituents in the "R" radicals are chloro, bromo, methoxy, phenyl, hydroxy and nitro. Classes of stabilizer mentioned include alpha-haloketone or amide of the Formula R<SP>8</SP>ÀCHXÀCOÀR<SP>9</SP> where x is Ce, Br or I, R<SP>8</SP> is hydrogen, alkyl acyl or aryl and R<SP>9</SP> is amino, alkyl or aryl which may be substituted; sulphonyl compounds, which may contain amido groups; halo-nitro lower alkones, including those containing hydroxyl, ester or sulphonyl groups. Suitable heavy metal salts for the composition include silver salts, gold stearate and mercury or gold behenate. Stabilizer precursors as described in Specification 1346252 can be incorporated also.
Patent GB-865079-A (GB)
Title: Improvements in or relating to control circuits for use with high flux density transformers for resistance welders
IPC: H05B7/11
Filed: 1959-03-02
Abstract: 865,079. Supply systems for resistance welding. SQUARE D CO. March 2, 1959 [March 24, 1958], No. 7079/59. Class 38 (4). A welding circuit having a high flux density transformer is controlled by two phase shifting circuits connected to an electronic conducting device, the second controlling the firing point of one of a pair of ignitrons 206, 228 in the first half-cycle, which point may be 85 degrees or later, to avoid high initial transient currents being drawn from the mains, and the first phaseshifting circuit controlling the firing point during the remainder of the cycles. A welding timer 16 controls a tube 14 in series with another tube 44 across a mains-energized transformer secondary winding 20. The tube 44 screen grid 60 is connected to the second phase-shifting circuit 72, 76 which is set to control the firing- point in the initial cycle. Conduction of tube 14 charges a capacitor 78 positively during the first half-cycle through a diode 82, which charge prevents further control from the circuit 72, 76. The control grid 56 of tube 44 is connected to first phase-shifting circuit 26, 28, 114, 116, 120 which adjusts the point at which the tube 44 conducts on the subsequent positive half-cycles. If the first phase-shifting circuit is set with a greater delay than that of the second then the first circuit will control the firing-point on the first half-cycle also. The tube 44 controls the ignitron 206 through another tube 184, while the ignitron 228 is controlled on the negative half-cycles from the first phase-shifting network through a tube 186 and a trailing tube 50.
Patent GB-1144630-A (GB)
Title: A transportable spreader for pulverulent materials
IPC: E01C19/20
Filed: 1968-02-13
Abstract: 1,144,630. Transportable spreader for pulverulent material. MUSTADFORS BRUKS A.B. 13 Feb., 1968 [17 Feb., 1967], No. 7102/68. Heading A1D. A transportable spreader for pulverulent material consists of a wheeled hopper 1 with an opening 12 at its bottom, a feeding mechanism 6 and a spreader disc 37 rotating about a vertical axis below the opening. The feeding mechanism consists of a paddle-wheel shaped device 9 mounted on a transverse shaft 7 just above the opening 12 and feeding screws 11, one right and one left handed arranged on either side of the paddle-wheel 9. Walls 13 prevent material being fed directly to the opening and a pivotable guard 53 protects the paddle-wheel from the bulk of the material. The paddle-wheel 9 is driven by the hopper wheels through the belt transmission 14 and pushing rod 21 attached to the transverse shaft 7. The material is fed from opening 12 through the mouth of funnel 32, mounted below the opening but with its mouth eccentrically located with respect to the upper circular edge 35, to the rotor disc 37. The rotor disc 37 is mounted eccentrically below the funnel mouth 36 and driven by the motor 40 via belt transmission 39.
Patent GB-106147-A (GB)
Title: Improvements in or relating to the Height-adjusting Mechanism of Motor Plough Frames, Tilling Machines and the like.
Inventor: RUSHEN PERCY CHARLES
IPC: A01B63/06
Filed: 1916-05-18
Abstract: 106,147. Rushen, P. C., (Stock Motorpflug Ge.s.). May 18, 1916. Ploughs.-The driving-shaft 9 of the heightadjusting gear of a motor-plough is provided with automatic means for disconnecting it from the motor shaft 1 after the plough frame has been raised or lowered to the desired extent. The shaft 1 drives a sliding sleeve, carrying two clutch members 4, 4', adapted to co-act with cones 2, 3 loose on the shaft 1 and carrying pinion wheels 11, 11<1>. The wheels 11, 11<1> are adapted to drive pinions 12, 12<1> secured to the shaft 9, the wheel 12 being driven directly and the wheel 12' through an intermediate wheel 13. A forked lever 5 operated from a shaft 6 throws the clutch member 'into operation. The shaft 9 is provided with a threaded portion 9<1> on which a nut 10 is fitted, the nut being provided with an arm attached to a longitudinally movable rod 14. The rod 14 carries a projecting arm 15, the other end of the arm 15 being slidably mounted on a longitudinally movable shaft 7 to which an extension of the clutch-operating lever 5 is pivoted. Adjustable tappets 8, 8' mounted on a sliding shaft 7 are engaged by the arm 15 when, by the rotation of the shaft 9, the nut 10 and rod 14 are moved laterally. The shaft 7 is thus moved operating t h e lever 5 to throw out the clutch against the pressure of the foot or the hand on the lever of pivot shaft 6. Springs normally hold the lever 5 in mid position. The nut 10 operates an indicator on which the height of the plough frame is shown.
Patent GB-326016-A (GB)
Title: Improvement in means for operating the tail center of grinding machines and similar machine tools
IPC: B24B41/06
Filed: 1929-03-05
Abstract: 326,016. Bath, J. March 5, 1929. Turning.-The tail centre 11 of a grinding-machine or similar machine tool is moved in one direction by a spring 50 and in the other by hydraulic fluid which is admitted through a hand-controlled valve to a cylinder 33. The tail centre is cut away as shown in Fig. 2 to allow clearance for the grinding-wheel G and is mounted in a sleeve 13 slidable in the tail stock 14. A casing 20 secured to the tailstock is provided with glands which are traversed by a piston rod 25 secured to the sleeve 13 and carrying a piston 31 working in the cylinder 33. Fluid supplied by a pipe 41 passes through a gate valve 39 controlled by a handle 40 and through an inlet passage 35 to the cylinder 33. Part of the fluid passes through a pipe 38 through an adjustable exhaust valve 44 which is always open. In operation, when the work is completed, the valve 39 is opened and the tail centre is withdrawn by the fluid acting on the piston 31. When the valve is closed, the piston is returned to bring the centre up to the work by the spring 50, the exhaust fluid passing out through the valve 44.
Patent GB-609164-A (GB)
Title: Improvements in or relating to rotary engines
IPC: F02B53/00
Filed: 1946-03-07
Abstract: 609,164. Rotary engines or compressors. CHKLIAR, J. March 7, 1946, No. 7159. [Class 110 (ii)] A rotary engine or compressor having outwardly-sliding vanes 7 of hardened synthetic resin moulded under high pressure, is provided with a number of eccentric working chambers 5, 6. Rollers may be fitted to the tip of each vane, which is driven outwards by centrifugal force, along a part of its length. Fig. 1 shows a rotor 2, having vanes 7 driven by compressed air admitted through a port 10, and expanding through working chambers 5, 11 and 6 in series, and which is exhausted through an outlet 12. A centrifugal governor 17 acts on a valve 19, controlling the inlet 10, weights 26 acting against a spring 18 through levers. The vanes may be reinforced by canvas.
Patent GB-691825-A (GB)
Title: Improvements in production of polyvinyl alcohol
IPC: C08F8/12
Filed: 1951-03-28
Abstract: Polyvinyl alcohol is made, preferably continuously, by boiling with agitation an anhydrous mixture of a polyvinyl ester and a hydrolytic alcohol containing from 1 to 4 carbon atoms, in the presence of an alkali metal alcoholate maintained at a concentration of not less than 0.1 per cent by weight of the mixture, removing the evolved vapours from the mixture and obtaining the polyvinyl alcohol as a finely divided suspension, e.g. in an excess of the alcohol. Specified catalysts are sodium methylate, potassium ethylate, lithium butyrate, sodium propylate, sodium butylate and sodium decylate.  The alcohol may be methanol ethanol, propanol or butanol.  Polyvinyl esters mentioned are polyvinyl formate, polyvinyl acetate, polyvinyl propionates and polyvinyl butyrates.
Patent GB-673955-A (GB)
Title: Improvements in or relating to lubricating oil compositions and to the production of additives therefor
IPC: C10M137/10
Filed: 1949-03-17
Abstract: Condensation reaction products of formaldehyde or a formaldehyde-yielding substance with one or more dithiophosphoric acid diesters having the general formula <FORM:0673955/IV (b)/1> in which R and R1 are the same or different alkyl, halogen-substituted alkyl or cycloalkyl groups, are employed as antioxidants in hydrocarbon lubricating oil compositions (see Group III). Dithiophosphoric acid diesters mentioned are the dimethyl, diethyl, di-(2-chloroethyl), dipropyl, dibutyl, didecyl, didodecyl, ditetradecyl, dioctadecyl, methyl octyl and ethyl hexyl esters of dithiophosphoric acid, and these may be reacted with formalin at atmospheric temperature to give the desired product.  Alternatively the reaction may be carried out in the presence of an inert solvent such as benzene, toluene, high-boiling aromatic hydrocarbons, or hydrocarbon lubricating oil, or at temperatures up to 100 DEG  C. The reaction product contains both the simple methylol derivative and also a compound of somewhat higher molecular weight.  In the examples, the reaction of the following dithiophosphoric acid diesters with formaldehyde is described: (a) dimethyl, (b) diethyl, (c) di-(2-chloroethyl), (d) didecyl, (e) dicyclohexyl.ALSO:A hydrocarbon lubricating oil composition has dissolved therein an oxidation inhibitor which is a condensation reaction product of formaldehyde or a formaldehyde yielding substance with one or more dithiophosphoric acid diesters having the general formula <FORM:0673955/III/1> in which R and R1 are the same or different alkyl, halogen-substituted alkyl or cycloalkyl groups. Dithiophosphoric acid diesters mentioned are the dimethyl, diethyl, di(-2-chloro-ethyl), dipropyl, dibutyl, didecyl, didodecyl, ditetradecyl, dioctodecyl, methyl octyl, and ethyl hexyl esters of dithiophosphoric acid, and these may be reacted with formalin to give the desired product.  The reaction product contains both the simple methylol derivative and also a compound of somewhat higher molecular weight.  The lubricating oil composition may also contain aliphatic or aromatic sulphonates such as calcium petroleum sulphonate, alkyl phenol sulphides such as p, p1-dibutyl-, diamyl-, or dioctyl-phenol mono- or polysulphides and their metal salts, metal salts of oxygen- or sulphur-containing acids of phosphorus such as those listed in U.S.A. Specification 2,364,284 and U.S.A.  Reissue Specification 22,829, and other detergents, corrosion inhibitors or antioxidants. Tests are described in which the reaction products of the following dithiophosphoric acid diesters with formaldehyde are evaluated as antioxidants when added to mineral lubricating oil containing iron naphthenate: (a) diethyl; (b) dicyclohexyl and (c) didecyl.
Patent GB-1085333-A (GB)
Title: Spark plug with improved seal between the shell and insulator
Inventor: LENTZ LAWRENCE RAYMOND
IPC: H01T13/36
Filed: 1966-02-18
Abstract: 1,085,333. Sparking plugs. CHAMPION SPARK PLUG CO. Feb. 18, 1966, No. 7335/66. Heading F1B. A sparking plug comprises a pocket positioned below an upper shoulder 36 of the insulator 16 a body of packing powder 38 in the pocket, a force distribution ring 42 above the upper shoulder and overlying the powder with the radially inner portion of the force distribution ring arranged to apply compressive force to the insulator and the radially outer portion of the annular ring arranged to apply compressive force to the powder, a sealing-ring 40 closing off the bottom of the pocket beneath the powder and a nut 44 above the force distribution ring for applying pressure simultaneously on the upper shoulder of the insulator and on the powder. As shown an asbestos packing 41 may be placed on top of the powder 38. The powder 38 is of a known resilient type which is described in U. S. A. Specification 2,020,967.
Patent GB-232023-A (GB)
Title: Improvements in and relating to devices for use in the replacement or adjustment of valve mechanism for internal combustion engines
IPC: F01L1/46
Filed: 1924-03-24
Abstract: 232,023. Holloway, A. G. March 24, 1924. Prizing-tools. - A device for manipulating the valve mechanism of internal-combustion engines of the kind having an abutment member, the length of which may be capable of variation, and a lever associated therewith and having a forked end adapted to engage under the valve spring, comprises an abutment member with a tapered shoulder and a lever having an elongated slot through which the part of the abutment member above the shoulder may pass, the lever moving about the tapered shoulder as a fulcrum. The lever 1 has the end 2 upwardly curved and forked to engage about the valve spindle under the spring washer, and has a slot 4 to take a bearing on the tapered shoulder 14 on the abutment member, which may be formed in two parts 13, 10, one threading on the other, to provide vertical adjustment. The foot 11 has a slot 12 engaging an upturned flange on the engine.
Patent GB-683907-A (GB)
Title: Illumination systems for the projection of lenticulated film
IPC: G03B21/20
Filed: 1950-03-24
Abstract: 683,907. Kinematograph apparatus. GRETENER, E. March 24, 1950 [March 29, 1949], No. 7497/50. Class 97 (i). For projecting lenticular colour film a light beam is divided by an interference filter into reflected and transmitted components in different spectral regions and at least one component is further subdivided at least once, the various beams produced then being directed on to the projection aperture in register. In the system shown in Fig. 1 a light source 1, with mirror 2, produces a parallel light beam. Alternatively, a convergent beam may be produced and subsequently rendered parallel, at a smaller cross-section, by a divergent lens. The parallel beam enters the filter system 3, 4, 5 which produces beams of the three primary colours parallel to the incident beam. The filter 3, for example, may transmit blue and reflect green and red, the filter 4 may transmit red and reflect green, and the filter 5 may reflect red. If the filters 3 and 4 reflect infrared, and the filter 5 transmits it it is removed from the projection beam. If the filter characteristics require that the beam transmitted by the filter 3 shall be subdivided the filters 4 and 5 are positioned beyond it and the emergent beams are perpendicular to the incident beam. A condenser 6 superposes the emergent beams at the projection aperture 7. To render the path lengths in the three beams equal pairs of mirrors 68, 69 may be introduced as shown in Fig. 8. The alternative filter arrangement shown in Fig. 6 has crossed filters at the centre mirrors to equalize path lengths are only needed in the central beam. Fig. 4 shows an arrangement in which a light beam of crosssection 32 is changed to a cross-section 33 before entering the filter system. The portions 36, 37 are displaced outwardly by pairs of mirrors 38, 39 and the portions 34, 35 are displaced downwardly by mirrors 42 to take their place. If the cross-section 32 is square the section 33 has a ratio 1 : 4 to give the beam emerging from the filter system of Fig. 1 or Fig. 6 a ratio of 3 : 4. If the cross-section 32 is given a ratio 4 : 3 the final cross-section is square, and this makes best use of the aperture of the projection objective. Specifications 672,378 and 682,853 are referred to.
Patent GB-369381-A (GB)
Title: Improvements in or relating to horse boxes and like animalcarrying vehicles
IPC: B60P3/04
Filed: 1931-03-11
Abstract: 369,381. Animal-carrying and other road vehicles. CARTWRIGHT, A. E., 221, Derby Road, and MOSS, A. E., Beacon House, Charnwood Road, both in Loughborough, Leicestershire. March 11, 1931, No. 7502. [Class 108 (i).] In animal-carrying or other vehicles of the kind provided with a driver's cab at the front a door is provided in the partition at the back of the driver's cab to give access to the body. The opening 3 extends from just above the attendant's seat 2 to the ceiling of the body and is closable bv means of a door 6 which extends as far as or above the ceiling 7 of the driver's cab. An opening 11 may be provided in the cab ceiling to give head room and this opening is closable by means of a panel or false ceiling 12 secured to and moving with the door 6.
Patent GB-374508-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B15/32
Filed: 1931-03-12
Abstract: 374,508. Knitting-machines. HEMPHILL CO., Central Falls, Rhode Island, U.S.A.-(Assignees of Lawson, R. H., Pawtucket, Rhode Island, U.S.A.) March 12, 1931, No. 7629 Convention date, March 20, 1930. [Class 74 (ii).] Jacks 19, one to each sinker 9, are provided for moving the sinkers of a knitting-machine for measuring, wholly or in part, the lengths of stitches formed by the needles. The jacks 19 are preferably arranged behind the needles 16 in the needle tricks, and have at their upper ends lugs 21 which engage within the throats 22 of the sinkers. Butts 27 on the jacks are engaged by cams 28, 29 mounted upon an additional cam ring which may be adjustable to align the jack and needle controlling cams, the incline 30 of the cam 28 raising a jack 19 when the corresponding needle 16 is being lowered by the stitch-drawing cam 31. Immediately after the jack has been raised so that the corresponding sinker assists in drawing the stitch, the cam 29 depresses the jack 19 so that cutting of the yarn by the sinker is prevented. The jacks 19 may be formed in two parts 24, 25 with interengaging ends. In another form, in which needle jacks 48 are arranged beneath the needles, the sinkeractuating jacks 110 extend behind the needles 45 and the needle jacks 48 and are actuated by cams 124, 125. In this form, the needles 45 are actuated for forming tapered reinforcements. or other designs by the jacks 48, the needle stitch cam being withdrawn. The jacks 48 are selectively operated in somewhat similar fashion to the needle jacks described in Specification 210,046, [Class 74 (ii), Knitting &c.]. Specification 20101/09, [Class 74 (ii), Knitting &c.], also is referred to.
Patent GB-657917-A (GB)
Title: Improvements in semi-rotary-liquid driven motors
IPC: F03C4/00
Filed: 1949-03-22
Abstract: 657,917. Semi-rotary engines. GRANOWSKI, O. A. March 22, 1949, No. 7717. Convention date, Dec. 17, 1948. [Class 110(ii)] A rotor 18, which is oscillated by liquid under pressure, is provided with a cavity 84 in which the liquid is admitted to force the rotor downwards and seal the contact between the bottom of the rotor and a stationary valve plate 26. Pressure liquid to actuate the vanes 29, 30 passes through passages 47, 47a, 49 to an elongated slot 50 in a segmented base-plate on the rotor bottom. The slot 50 alternately supplies the working chambers with liquid, as described in Specification 635,106. the liquid also acting upon a piston valve 40 which controls the admission and discharge of the liquid, to and from the working chamber. A duct 86 leads pressure liquid from the slot 50 to the cavity 84. Two right-angled discharge passages 55, 56 in the rotor have lower ends which communicate alternately with ports in the valve plate 26 to receive discharged water from opposite ends of the valve chamber 39, alternately.
Patent GB-108297-A (GB)
Title: Improvements in and relating to Worm-gearing.
Inventor: KELLY ERNEST MALCOLM
IPC: F16H55/24
Filed: 1917-05-31
Abstract: 108,297. Kelly, E. M. May 31, 1917. Toothed wheels.-To take up wear and prevent back-lash, a wormwheel has two adjustable toothed rings e so arranged that the centres of curvature r of the tooth surfaces o, p are displaced to the sides of the centre n of the worm teeth m and gradually approximate to the centre n as the parts are adjusted. The rings e are fixed by bolts g and nuts to a flange b' on the body of the wheel, and are adjusted by removing washers h. In a modification, one ring e only is used, the nuts i bearing against the flange b', or the ring may be integral with the body of the wheel, which is moved along its shaft for adjustment.
Patent GB-845441-A (GB)
Title: Process for the ethinylation of 17-keto-steroids
IPC: C07J1/00
Filed: 1957-03-08
Abstract: 17-Hydroxy-17-ethinyl-steroids are prepared by reacting a 17-keto-steroid containing in the molecule a further unprotected keto group in the 3-position in continuous conjunction with at least one carbon-carbon double bond in the nucleus with an ethinylation reagent.  Continuous conjugation excludes parallel conjugation such as exists when double bonds are present both in the 1, 2- and in the 4, 5-positions of the nucleus.  The ethinylation may be carried out by means of acetylene and on alkali metal in liquid ammonia at a temperature below -40 DEG C. using more than 2 mols of alkali metal per mol of steroid, or by means of acetylene and an alkali metal achoholate of a tertiary alcohol-preferably more than 2 mols of alcoholate per mol of steroid.  Suitable starting compounds are 3, 17-androstendiones and 19-nor-3, 17-androstendiones with at least one double bond in the 4, 5-or 1, 2 position and any other double bond in continuous conjugation.  The starting compounds may contain further substituents, for example, in the 11-position, especially free or esterified hydroxy group.  In the case where the unprotected 3-keto group is in continuous conjugation with a double bond in the 4(5)-position, the reaction may be carried out in the presence of acetone preferably in a quantity of more than 2 mols per mol of 17-ketosteroid reactant.  In the examples 17-ethinyl-testosterone is prepared from androst-4-en-3, 17-dione, 19-nor-17-ethinyl-androst-4-en-17-ol-3-one is prepared from 19-nor-androst-4-en-3, 17-dione, and 17-ethinyl-D 6-dehydrotestosterone is prepared from D 4, 6-androstadien -3, 17-dione.