baber/WOPTO huggingface dataset:
Patent GB-234329-A (GB)
Title: Improvements in internal combustion engines
IPC: F01L7/02
Filed: 1924-08-18
Abstract: 234,329. Asser, S. Aug. 18, 1924. Valves.-Air is drawn in to the underside of the piston of a two-stroke engine through a port 42, Figs. 3 and 5, ports 47, 52 in concentric oscillating valves 43, 48, port 41, chamber 24, and port 25 during the upstroke, and is transferred to the combustion chamber on the downstroke back through the chamber 24 and the concentric valves, passing through ports 46, 51 in the latter and through cylinder port 38. Fuel is injected through port 62 by a pump 63, Fig. 2, the stroke of which is varied by a wedge 64. Exhaust takes place through port 29 and rotary valve 28, Figs. 3 and 4, which is connected at its open end 31 to the exhaust pipe. Valve gear.-The inner inlet valve 48 is actuated by an eccentric 56, Fig. 2, rod 54, and arm 53, and the outer valve 43 by a. cam-operated rocker 57, link 58, lever 59, rod 61, and an arm on the valve.
Patent GB-254124-A (GB)
Title: Improvements in water tube boilers
IPC: F22B17/12
Filed: 1925-08-01
Abstract: 254,124. Richardsons, Westgarth, & Co., Taylor, L., and Oldfield, G. H. Aug. 1, 1925. Water-tube boilers.-A boiler of the kind in which nests of tubes connected to top and bottom headers are arranged in banks, and in which a steam and water drum connected to the top headers is placed at the top of a triangular space between the banks, consists of a front bank of inclined tubes a and two rear banks of vertical tubes d, g, the lower headers b, e of the front bank and the first rear bank being connected by tubes r and the lower headers e, h of the first and second rear banks being unconnected. Vertical partitions s in the upper headers k of the second rear bank force the feed entering through inlets t to pass downwards and upwards through the second rear bank before entering the upper drums f of the first rear bank. A superheater w is fitted in the triangular space between the front bank of tubes and the rear banks.
Patent GB-867592-A (GB)
Title: Improvements in or relating to photographic emulsions and elements containing the same
Inventor: KENDALL JOHN DAVID
IPC: C09B57/02
Filed: 1958-06-19
Abstract: 2-Carbethoxymethyl-quinoline is prepared by reacting quinaldine with ethyl chloroformate in anhydrous ether in the presence of lithium and bromobenzene.  3-Carbethoxy-7-diethylamino-coumarin is prepared by refluxing 4-diethylamino-2-hydroxybenzaldehyde and diethylmalonate in ethanol in the presence of piperidine. 3-Carbethoxy-7-hydroxy-coumarin and 3-carbethoxy-7-methoxycoumarin are similarly prepared from resorcylaldehyde or 2-hydroxy-4-methoxybenzaldehyde respectively and diethyl malonate. German Specification 105,103 is referred to.ALSO:Dyestuffs of the general formula:-  <FORM:0867592/IV(c)/1> wherein n is 0 or 1, D completes a 5- or 6-membered ring and Z is hydrogen or one or more alkyl, aralkyl, aryl, hydroxy, alkoxy, amino, substituted amino or halogen substituents, are prepared by reacting a salicylaldehyde with a compound of the formula:-  <FORM:0867592/IV(c)/2> wherein R1 is an alkyl group.  An example is given of the reaction of 4-diethylamino-2-hydroxybenzaldehyde with 2-ethoxycarbonylmethyl-quinoline.  The dyes wherein D is a benzthiazole, benzoxazole or benzimidazole nucleus may be prepared by reacting a 3-carbalkoxycoumarin with a compound of the formula:- <FORM:0867592/IV(c)/3> wherein X is O, S, -NH- or substituted -NH-. Examples are given of the reaction of 3-carbethoxy-coumarin having in the 7-position a hydroxy, methoxy or diethylamino substituent with o-aminophenol, o-aminothiophenol, o-phenylene-diamine or o-amino-N-methylaniline. German Specification 105,103 is referred to.
Patent GB-1438619-A (GB)
Title: Sealing ring structure
IPC: F16J15/32
Filed: 1974-05-06
Abstract: 1438619 Pistons BUSAK & LUYKEN KG 6 May 1974 [17 May 1973 12 July 1973] 19765/74 Headings F2B and F2T In a seal, e.g. for hydraulic pistons or pistonrods, a ring 1, made from a plastics material based on P.T.F.E., has a recess forming a shoulder 5 and a slightly divergent surface 13. The ring 1 is urged radially into contact with surface 3 by means of a separate resilient ring 2 or by an integral resilient section 1a. In other forms, the resilient section has an annular groove (11, Figs. 6 and 7, not shown) in which a resilient 0-ring may be seated to augment the radial pressure.
Patent GB-774638-A (GB)
Title: Improvements relating to electric current transformers
IPC: H01F38/30
Filed: 1955-07-08
Abstract: 774,638. Transformers. GENERAL ELECTRIC CO. July 8, 1955 [July 12, 1954], No. 19868/55. Class 38 (2). A current transformer assembly comprises a pair of elongated insulating bushings 20, 21 arranged in closely spaced parallel relationship, elongated conductors 23, 23a passing through the bushings and connected together at one end by a conductive member 22 so as to form a loop constituting the primary winding, a magnetic core 40 with a secondary winding 41 wound thereon being mounted about one of the insulating bushings. The conductors 23, 23a are hollow and an insulated conductor 34 may be passed therethrough a desired number of times and suitably connected to the conductors 23, 23a thereby forming a multiturn primary winding. The transformer is housed in an oil-filled casing comprising a metal tank 11 and a porcelain bushing 12 at the top of which is mounted a dome 15 carrying terminals 31, 32. The transformer is supported in the casing by means of a support member 18 held in the dome-shaped member 15 through which member 18 the conducting tubes 23, 23a pass, being attached thereto by nuts 30. The insulating bushings are provided with electrostatic shields 53 and each may be surrounded by an earthed metal sleeve. Specification 551,509 is referred to.
Patent GB-1352547-A (GB)
Title: Forging manipulators
IPC: B21J13/10
Filed: 1971-06-10
Abstract: 1352547 Forging manipulators ALLIANCE MACHINE CO 10 June 1971 [11 June 1970] 19883/71 Heading B3H A forging manipulator of the type having a wheeled carriage 10 with a peel 13 suspended thereon for horizontal, vertical and skewing movement relative to the carriage so that a workpiece carried by the peel jaws 36 automatically moves to its normal orientation when released by the forging tools of a press has its peel mounted in the carrier 21 suspended by a resiliently compressible fluid member and supported on two pairs of links 18, 19 forming part of a parallelogram linkage. The links 18 are pivotally connected between the carrier at 20 and one end of a lever 23 pivoted to the frame 25 of the carriage. The links 19 are pivotally connected between the rear of the carrier 21 and a lever 29 pivoted to the links 18. An hydraulic cylinder 40 urges the peel longitudinally of the carriage which is moved continuously by hydraulic motors driving sprockets 15 engaged with chains 16. When the workpiece is held by the forging tools fluid is displaced from the cylinder 40 and stored in a pressure accumulator (not shown). Thus when the tools release the workpiece the peel is accelerated to place a fresh portion of workpiece in the press. The peel can be rotated by an hydraulic motor 13a. Any sideways movement of the peel is cushioned by hydraulic cylinders 44a. An hydraulic life cylinder 31 is provided between the carriage and the lever 23 and has a pneumatic air cushion 35 which acts as the resiliently compressible fluid member.
Patent GB-438949-A (GB)
Title: Improvements in or relating to arc welding systems
IPC: B23K9/10
Filed: 1935-07-12
Abstract: 438,949. Control systems for welding arcs. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.-(Assignees of Schueler, A. E. ; 413, West Street, Wilkinsburg, Pennsylvania, U.S.A.) July 12, 1935, No. 19974. Convention date, Aug. 15, 1934. [Class 38 (iv)] Switching systems.- In an arc welding system, a reduced voltage is applied to the welding circuit when open and an increased voltage supply is automatically switched in when the electrodes are brought into arcing engagement, time delay means prevent the switching out of the higher voltage supply until the expiration of a predetermined interval after the welding circuit is opened. The electrodes 16, 17 are supplied through transformers 11, 13, the secondary circuit of which is closed by a switch 23 only when the electrodes are brought into arcing engagement. Before this occurs the voltage across the electrodes is only that due to the part of the secondary 13 between the main 15 and the tapping 36. When the electrodes are brought into contact, current is supplied through the rectifier 35 to the time delay unit 26 and operation arm 30 to close contacts 29 thus operating the relay which closes main switch 23. Switch 24 in the circuit of the closing winding 27 of the time delay unit is opened at the same time. This circuit is however closed by switch 43 operated by relay 42 responsive to flow of welding current. When this ceases switch 43 opens and breaks the circuit through the closing winding 27 whereby reverse winding 28 and spring 31 open contacts 29 after a predetermined interval unless the welding current flow is restarted by contact of the welding electrodes. The predetermined interval depends upon the adjustment of the spring 31 and of the rheostat 33 in the circuit of the reverse winding 25.
Patent GB-1342186-A (GB)
Title: Enzyme complexes
IPC: C12N11/14
Filed: 1972-06-05
Abstract: 1342186 Enzyme complexes; polyacroleinenzyme complexes NESTLE SA 5 June 1972 [21 June 1971] 26053/72 Headings C3H and C3P [Also in Division B1] A process for the preparation of a waterinsoluble enzyme product comprises forming a layer of a water-insoluble polymer having free aldehyde groups (polyacrolein) on an inert carrier and thereafter reacting an enzyme (papain or trypsin) with the free aldehyde groups of the polymer. Inert carriers include membrane, tube, granules or beads, particularly porous crushed porcelain, glass beads, silica, silicates and metal oxides. The examples disclose the following methods of forming the polymer layer on the inert carrier: (1) immersing granules of the carrier in a 1% solution of polyacrolein in tetrahydrofurfuryl alcohol and subsequently eliminating the alcoholic solvent (2) preparing polyacrolein methyl acetal using trimethyl orthoformate, immersing granules of the carrier in an ethyl acetate solution of the acetalized polymer, eliminating the solvent and regenerating free aldehyde groups by acid hydrolysis of the acetal groups with hydrochloric acid (3 and 4) preparing polyacrolein n-butyl acetal using n-butanol in the presence of p-toluene sulphonic acid as catalyst and then proceeding as in (2), and (5) immersing the granules in freshly distilled acrolein and then polymerizing the acrolein in situ. The enzyme is reacted with the coated inert carrier in a buffer solution of sodium barbital hydrochloride of pH 7 to 8.
Patent GB-1407765-A (GB)
Title: Flash lamp system
IPC: H05B41/32
Filed: 1973-04-27
Abstract: 1407765 Discharge lamps MULTIBLITZ DR ING D A MANNESMANN GmbH & CO KG 27 April 1973 [6 May 1972] 20095/73 Addition to 1346521 Heading H1D [Also in Divisions H2 and F4] A flash tube 10 has electrode chambers 14, 16 each of which has a volume at least equal to that of the discharge channel 12. The pressure inside the tube is greater than 600 mm. of mercury and the tube is mounted in a reflector 22. Cooling air from a blower passes through a duct 24 to cool the chambers 14, 16 but not the channel 12 which becomes heated and emits infra-red radiation. The tube is made of synthetic quartz glass which has a high transmissivity for ultra violet and infra-red radiation.
Patent GB-625383-A (GB)
Title: Valve tappets of internal combustion engines
IPC: F01L1/14
Filed: 1947-07-26
Abstract: 625,383. Valve-gear. NORTON MOTORS, Ltd. and HOPWOOD, H. July 26, 1947, No. 20201. [Class 7 (vi)] Valve tappets 1 in a cylindrical guide 3 are formed as complementary half-cylinders with their flat faces 2 confronting each other. The surfaces 2 may be relieved at 10 to assist lubrication, and a key 11 screwed at 14, Fig. 3, to the guide 3 and extending through the lower relieved portion 10 prevents rotation of the tappets. The upper ends 4 of the tappets may be open, the push rods 6 extending down through the tappets and secured to the bottom ends 7. Specification 276,243, [Class 7 (vi)], is referred to.
Patent GB-673935-A (GB)
Title: Improvements relating to pulse operated thermionic valve apparatus such as is suitable for pulse counting frequency division, or for generating a potential variation of step waveform
Inventor: HUNTLEY KEITH GORDON
IPC: H03K25/00
Filed: 1948-07-29
Abstract: 673,935. Pulse frequency-dividing circuits. ELECTRIC & MUSICAL INDUSTRIES. July 23, 1949 [July 29, 1948], No. 20212/48. Class 40 (vi). A circuit for generating a voltage of stepped waveform comprises a valve with a Miller feedback capacitor across which the waveform is developed, and a source of pulses of substantially constant amplitude which is coupled to the input electrode of the valve via a further capacitor and an isolating device which also serves to discharge the further capacitor in the intervals between pulses. In this way, on the occurrence of each pulse, the further capacitor is charged from the feed-back capacitor so that the voltage across the feed-back capacitor changes in equal steps which are independent of the pulse duration. The Figure shows a valve 1 connected in a " Miller-transitron " circuit so that initially capacitor 9 charges to the supply potential. On the occurrence of a positive-going pulse from the generator 2, capacitor 3 is charged to the peak pulse amplitude and the charge on capacitor 9 is consequently reduced by the current flow through diode 5, the potential at the control grid being maintained substantially constant by the feed-back circuit. Between pulses, capacitor 3 discharges via resistor 4. The voltage at the anode of valve 1 thus falls by an equal amount at each pulse from source 2 until diode 14 conducts, which effectively shorts capacitor 9 so that the control grid potential rises. The space current flow thus increases, the screen grid potential falls and due to the transitron connection the valve is rapidly cut-off and capacitor 9 is recharged to anode potential, the cycle then being repeated. Diodes 14, 18 limit the anode excursion of valve 1 and the resistor 16 enables the point at which diode 14 conducts, i.e. the number of steps in the waveform, to be adjusted. Outputs may be taken directly from the electrodes of valve 1 at terminals 23 and 25 or via a differentiating circuit 20, 21 at terminal 22. Specification 673,933 is referred to.
Patent GB-999463-A (GB)
Title: Improvements in or relating to metal oxide power sintering
Inventor: BOURRASSE ANDRE
IPC: C04B35/64
Filed: 1962-05-25
Abstract: Metal oxide powders having a specific surface of at least 4 m.2/g. are sintered by (1) compressing the powder to give it a density equal to at least 45% of the theoretical density of the oxide, (2) rapidly heating, i.e. in up to 90 minutes, to 1200 DEG  to 1800 DEG  C. in a neutral or reducing atmosphere, e.g. dry hydrogen, argon or cracked ammonia, and maintaining such temperature, the total heating time not exceeding 3 hours, and then (3) cooling.  Oxides may be uranium oxide, beryllium oxide, aluminium oxide or oxides of the actinides.
Patent GB-693044-A (GB)
Title: Improvements in or relating to heavy duty bearings
Inventor: CAMERON ALISTAIR
IPC: F16C33/06
Filed: 1950-08-16
Abstract: 693,044. Bearings. PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. Aug. 16, 1951 [Aug. 16, 1950], No. 20313/50. Class 12 (i).  A bearing wherein the bending load is liable substantially. to exceed the dead-weight load, has its bore coned for a substantial part of its length at the end of the bearing adjacent to the plane of application of the bending load, the remainder of the length of the bore being parallel to the cylindrical shaft carried therein when the latter is undeflected. The angle of the coned bore part is so chosen that at maximum bending load, the shaft is parallel to a generatrix of the conical surface, and the length of the conical portion is between ¢ and # of the total length of the bearing. The junction between the conical and cylindrical portions may be rounded.
Patent GB-1387040-A (GB)
Title: Compositions based on organopolysiloxanes
IPC: C08K3/38
Filed: 1972-05-02
Abstract: 1387040 Mixed oxides WACKER-CHEMIE GmbH 2 May 1972 [4 May 1971] 20389/72 Heading ClA [Also in Division C3] A pyrogenic mixed oxide of boron and silicon containing 82À5% wt. SiO 2  and 17À5% wt. B 2 O 3  and a surface area of 180 m.<SP>2</SP>/g. is prepared by a flame hydrolysis method in which evaporated SiCl 4  and BCl 3  are burned in a combustion chamber, at a temperature above 800‹ C., together with hydrogen whilst introducing air. The mixed oxide produced is separated off via a cyclone and freed of residual HCl by heating to 200‹ C.
Patent GB-423244-A (GB)
Title: Improvements in and relating to protective means for alternating current circuits
IPC: H02H3/30
Filed: 1933-07-24
Abstract: 423,244. Protective cut-out systems. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin) July 24, 1933, No. 20822. Convention date, July 23, 1932. [Class 38 (v)] A protective system for a line section 1 is made responsive both to the values of, and to the phase-difference between, the currents at the ends thereof, by impressing on the grids 18 of the electron-discharge tubes 20, 21, a voltage proportional to the current-difference between the ends in a direction for starting the discharge and, in a restraining direction, a voltage proportional to the rectified current at the end where the tube is located. The latter voltages derived from transformers 6, 7 are impressed on potential dividers comprising equal resistances 10, 11, and the transformer secondaries are interconnected by conductors 6<1>, 71 in such a way that the difference between their secondary voltages is applied to equal resistances 8, 9. Rectifiers are so arranged that the voltages across the resistances, as 8, 10, oppose one another and the difference is applied to the grids 18 to modify the bias of sources 22, 23. A trip or indicator coil is located in each anode circuit. Shunting condensers are chosen such that the time-constants ensure the building up of the restraining voltages before the operating voltages, whereby undesired cutting-out is prevented. Specification 397,823 is referred to.
Patent GB-275660-A (GB)
Title: Manufacture of cellulose derivatives
IPC: C08B1/08
Filed: 1927-08-08
Abstract: 275,660. I. G. Farbenindustrie Akt.- Ges. Aug. 6, 1926, [Convention date]. Cellulose ethers; cellulose carboxylates and ranthates; alkali cellulose.-Alkali cellulose in the form of pulp or paper such as can be obtained from a half-stuff draining-machine, is esterified or etherified by means of gaseous reagents. The sheets may he spaced apart by means of sheets of wire netting. In the examples, cellulose pulp is steeped in caustic soda solution nf 70 per cent at a raised temperature in a vacuum, squeezed, and placed with alternate wire netting sheets in a bomb in which it is ethylated by ethyl chloride at 100‹ C. and 5 atmospheres pressure; cellulose sheet is steeped continuously at 55‹ C. in caustic soda solution of 60 per cent, squeezed, and rolled up with wire netting on a winding trestle, the roll being methylated by methyl chloride at 70‹ C. and 5 atmospheres pressure. The Specification as open to inspection under Sect. 91 (3) (a) contains two other examples in which cellulose sheets are steeped in caustic soda solution of 18-22 per cent strength, squeezed, allowed to ripen, and, with wire netting sheets between them, treated at 20-25‹ C. with a stream of carbon disulphide vapour, alone or diluted with an indifferent gas; cellulose prepared as in the first example given is treated at 100‹ C. with the vapour of lauric acid chloride, the temperature being maintained by the circulation of nitrogen. This subject-matter does not appear in the Specification as accepted.
Patent GB-774702-A (GB)
Title: Improvements in planographic master forming blank and method of making the same
Inventor: DALTON HAROLD RICHARD
IPC: B41C1/10
Filed: 1954-07-19
Abstract: 774,702. Coated fabrics. TIMEFAX CORPORATION. July 19, 1954, No. 20990/54. Class 140. [Also in Groups XVI and XL (b)] In a printing blank of the planographic type having a backing, e.g. paper, cardboard, cloth, to which an electrically conductive coating layer is strippably attached, the surface of the backing is treated prior to the application of the layer, to render it hydrophilic, i.e. capable of attracting, absorbing or adsorbing water, and the conductive layer has incorporated therein powdered carbon to render the layer perforatable in minute areas by stylus-applied electric voltages and thereby to transfer to the hydrophilic surface a corresponding ink-receptive deposit at each minute area. The conductive coating 10 is preferably formed as a film-forming plastic, such as a vinyl ester polymer, vinyl chloride polymer, styrene polymers, cellulose acetate, ethyl cellulose, as referred to in Specification 760,675, impregnated with carbon black. The backing layer 11 has its surface treated with a pigmented or non-pigmented coating such as casein and formaldehyde or carboxy methyl cellulose and an aluminium salt mixed with starch, casein, polyvinyl alcohol, urea formaldehyde or other binder. The conductive coating on the backing 11 may be formed as a single layer 10 or as superposed layers 10a, 10b of different resistances, and the blank is provided with a whiteish masking coating 12. The stripped conductive coating with its masking coating can be used as a stencil, whilst the layer 11 with its hydrophilic surface and deposits of carbon can be used as a planographic blank. A water-repellent ingredient such as a chlorinated paraffin wax or an octadecanoic amide is preferably incorporated in the conductive plastic layer. The upper coating may be provided with a transverse strip 13 to facilitate the stripping operation and longitudinal reinforcing strips may be added when the stencil is to be mounted on a mimeograph drum.
Patent GB-1041622-A (GB)
Title: Shelf bracket
IPC: A47B57/56
Filed: 1964-05-21
Abstract: 1,041,622. Shelf brackets. D. D. S. BESSANT, Aug. 20, 1965 [May 21, 1964], No. 21001/64. Heading A4B. A shelf bracket arrangement includes a vertical flanged channel support element A, a cantilever bracket arm D having jaws 4 which embrace the channel flanges to be slidable thereon and a wedge B which is inserted in the channel from beneath to engage with a wedge C inserted between the jaws to secure the bracket in the desired position.
Patent GB-1093398-A (GB)
Title: Motion picture apparatus
IPC: G03B19/18
Filed: 1966-05-12
Abstract: 1,093,398. Motion picture cameras. EASTMAN KODAK CO. May 12, 1966 [May 12, 1965], No. 21022/66. Heading G2A. A motion picture camera has a clutch member 20 connected by gearing 21, 22 to a drive motor, the clutch engaging with a complementary clutch element 23 of the film cartridge 15 and so rotating a take-up spool therein. If it is required to operate the camera without a cartridge therein, a spring member 30 engages against gear 21, exerting a braking action thereon which corresponds to the torque load imposed by the cartridge when present, thus preventing the drive mechanism from running at excessive speed. Fixed to spring member 30 is a pin 40, which extends into the space normally occupied by the cartridge. When a cartridge is inserted, therefore, it engages against the pin, pushing spring 30 up into the dotted line position, and so disengaging it from gear 21.