baber/WOPTO huggingface dataset:
Patent GB-607393-A (GB)
Title: Improvements in or relating to loading coil cases
IPC: H02G15/12
Filed: 1946-02-01
Abstract: 607,393. Inductances. STANDARD TELEPHONES & CABLES, Ltd., BRADLEY, R. W., and HALLETT, L. W. Feb. 1, 1946, No. 3264. [Class 38 (ii)] [Also in Group XXXVI] A loading-coil case comprises a box 1 housing the coils 3 and a cover 2 provided with two elbows 9, displaced on either side of the longitudinal axis of the box, and facing opposite ends; the coil-connecting leads 8 passing through the elbows. The box 1 is inserted in a protecting case 12 into which compound is poured to fill the spaces between the cases 1, 12 and extend into the elbows up to plugs 17. A protecting cover 13 with eyebolts 15 is provided for the case 12 and serves as a chamber for the cable joints 18. For transit purposes the leads 8 are secured in metal sleeves sweated to the elbows, Fig. 4 (not shown). For buried installations, cases may be installed on their sides on top of one another in manholes, bitumen-impregnated canvas bags replacing the outer cases 12.
Patent GB-1198957-A (GB)
Title: A Device for Withdrawing an Ingot from a Continuous Casting Plant
Inventor: BASHILOV GENNADY NIKOLAEVICH
IPC: B22D11/128
Filed: 1969-01-21
Abstract: 1,198,957. Continuous casting. URALSKY ZAVOD TYAZHELOGO MASHINOSTROENIA IMENI S. ORDZHONIKIDZE. 21 Jan., 1969, No. 3298/69. Heading B3F. A withdrawal roll stand 2 comprises an L- shaped member (with a bed part 4 and an upright part 5) to which are hingedly connected a crossmember 7 and a second upright 6 bearing hydraulic cylinders 16 which urge rolls 13 against the cast strand 15. Access to the parts for replacement and repair is facilitated by removal of the hinges 8, 9, 10.
Patent GB-498371-A (GB)
Title: Improvements relating to the treatment of aluminium and aluminium alloy surfaces
IPC: C23C10/36
Filed: 1938-02-03
Abstract: A ductile bearing surface is produced on a member of aluminium or aluminium alloy by heating it in zinc or cadmium dust, or both, at a temperature of from 700 to 1000 DEG  F.  The article, such as a piston, may be placed in a hermetically sealed container with metallic zinc dust and zinc oxide, the container being slowly revolved and heated to 700 DEG  F. for twelve hours.  The thickness of the coating may be adjusted by variation of the quantity of metallic dust, the temperature, the time, or two or more of these factors.
Patent GB-884333-A (GB)
Title: Improvements in or relating to electric amplifiers
IPC: H03F1/34
Filed: 1959-01-30
Abstract: 884,333. Transistor amplifying circuits. GENERAL ELECTRIC CO. Ltd., and INGRAM, D. G. W. Feb. 1, 1960 [Jan. 30, 1959], No. 3380/59. Class 40(6). A negative feedback transistor amplifier, Fig. 1, which is connected in a common base circuit as far as the feedback path is concerned has an impedance network 6 in the base circuit of the transistor 5 arranged to present a low impedance above the working band of the amplifier to reduce phase-shift round the feedback loop. The network comprises an L.C. low-pass filter 22, Fig. 2, terminated in a resistor 25 connected in parallel with the input, or alternatively a similar filter connected in cascade with the input, Fig. 3 (not shown), terminated with a resistor. In order to improve the low frequency stability the cascade connected network may include a transformer 36, Fig. 4, connected in its input circuit. In Fig. 5 (not shown), a transformer is connected between collector and base of transistor T1 to neutralize collector capacitance.
Patent GB-698562-A (GB)
Title: New diastereoisomeric propane derivatives and processes for their preparation
Filed: 1951-02-12
Abstract: The invention comprises the three forms of compounds of the general formula <FORM:0698562/IV (b)/1> wherein R represents an unsubstituted or substituted aliphatic or aromatic radical (especially a lower alkyl group, a phenyl group or a group of the form -R1COOR11, wherein R1 represents an alkylene or arylene radical and R11 hydrogen or an alkyl group) or wherein R represents an alkoxy group, and the manufacture thereof by the action, under anhydrous conditions, of thionyl chloride on an erythro form or of thionyl chloride or hydrogen chloride on a threo form of the corresponding 3-mono-esters of 2-dichloracetamido-1-p-nitrophenyl-propane-1 : 3-diol, which may be prepared by monoesterification of the diol, e.g. by the action of carboxylic acid chlorides or anhydrides or of chlorocarbonic esters, in the presence of a tertiary base.  In examples: (1) DL-erythro 2-dichloracetamido - 1 - p - nitrophenyl - 3 - acetoxypropane-1-ol is refluxed with excess of thionyl chloride; (2) DL-erythro 2-dichloracetamido-1-p - nitrophenyl - 3 - carbethoxyoxypropane - 1 - ol is similarly treated; (3) the DL-compound in (1) is replaced by the L-isomer; (4) DL-threo 2-dichloracetamido - 1 - p - nitrophenyl - 3 - (31 - carboxypropionoxy) - propane - 1 - ol is heated with a solution of hydrogen chloride in anhydrous dioxane in a closed vessel at 100 DEG  C.; (5) and (6) DL- or D-threo 2-dichloracetamido-1-p - nitrophenyl - 3 - acetoxypropane - 1 - ol is heated with thionyl chloride in dioxane in the presence of pyridine; (7) D-threo 2-dichloracetamido - 1 - p - nitrophenyl - 3 - benzoyloxypropane - 1 - ol is similarly treated.  Specifications 692,265 and 698,544 are referred to.
Patent GB-524585-A (GB)
Title: Improvements in and relating to a pressure device for hydraulic brakes
IPC: B60T11/224
Filed: 1939-02-01
Abstract: 524,585. Hydraulic brakes. BELENKIJ, J. Feb. 1, 1939, No. 3421. Convention date, Feb. 9, 1938. [Class 103 (i)] A master cylinder for hydraulic brakes connected to the brakes by pipe 32 comprises a piston 2 connected to the pedal at 5 and containing a valve 12 controlling communication between the working space 8 of the cylinder and a chamber 35 on the other side of the piston containing a spring-pressed piston 20 carrying a valve 24 adapted to be opened by the braking strokes of the master piston. For brake release position the valve 12 is held open by a stop 33 mounted on a wall 15 fixed in the cylinder and the piston 20, the spring of .which has been compressed by previous brake applications exerts a slight pressure past the valve 12 throughout the brake system. On brake application the piston 2 is moved to the left, the valve 12 closes the piston 20 is also drawn to the left and if it abuts a stop flange 37, the valve 24 is opened and the piston 2 draws in fluid from the supply reservoir by a passage 29. In release the piston 20 may be moved to engage the right-hand wall 34 which also engages the stem 23 of the valve 24 which it opens allowing excess fluid to escape to the reservoir.
Patent GB-1374767-A (GB)
Title: Polyamides
IPC: D06M17/08
Filed: 1971-01-29
Abstract: 1374767 Laminates IMPERIAL CHEMICAL INDUSTRIES Ltd 17 Jan 1972 [29 Jan 1971] 3473/71 Heading B5N [Also in Division C3] A fabric is coated with a copolyamide and contacted with a second fabric surface, and heat is applied to soften the copolyamide, thus bonding the fabrics. The copolyamide contains, randomly distributed, by weight: 10-80% -[-CO (CH 2 ) 5 NH-]-; 10-80% -[-NH(CH 2 ) 6 - NHCO(CH 2 ) x CO-]- or -[-NH(CH 2 ) 6 NH-COAr-CO-]-, where x is 2, 3, 5, 6, 7, 9 or 10, and Ar is a monocyclic aromatic nucleus; 1-70% -[-CO(CH 2 ) 11 NH-]-, and 0-10% other amide monomer units. The "other units" may be derived from salts of hexamethylene diamine with adipic or sebacic acids, or salts of ethylenediamine or tri-, tetra-, penta-, deca-, or dodecamethylenediamine with HOOC(CH 2 ) x COOH or with a monocyclic aromatic dicarboxylic acid. The polymer may contain: glass fibres, mica, carbon, or chalk, pigments, or plasticizers or flow improvers, e.g. stearates or silicates of Mg, Al, Ca, or Zn, or tallow amines, and may be made into films, fibres, filaments or shaped articles. Or the copolyamide may be a powder having number-average particle-size <300 Ám. The powder may be applied to the fabric surface as a regular pattern of dots; the polyamide powder in the dots may be sintered together. The fabric may be of cotton.
Patent GB-342145-A (GB)
Title: Improvements in stoppers for containers, particularly applicable to containers for receiving and administering inhaling and other vapours
IPC: A61M15/00
Filed: 1930-02-01
Abstract: An indiarubber edge is applied to a disc closure for an inhalant flask, by placing a cardboard disc between two mould members and running a solution of rubber therearound.  A construction of mould for the purpose is shown and described.
Patent GB-880691-A (GB)
Title: Tube bending machines
IPC: B21D7/024
Filed: 1958-02-03
Abstract: 880,691. Angular bending. HILGERS MASCHINEN - UND APPARATE - BAUANSTALT. Feb. 3, 1958 [Feb. 6, 1957], No. 3509/58. Class 83 (4). A tube-bending machine having a rotatable former and a clamp which can be pivoted back into its initial position independently of the former after the tube has been bent is characterized in that the clamp is rigidly connected to drive means for rotating the former, which drive means is connected to the former during clamping up of the tube and the subsequent bending thereof but is uncoupled for the return movement of the drive means with the clamp, the former swinging back automatically into its starting position only after the bent tube has been removed and in doing so is again coupled to the drive means. A hollow vertical shaft 11, turned by an hydraulically-moved chainengaging teeth 29 on the shaft, is formed at its upper end with a platform 12 which carries on a guide 20 a clamping jaw 21 movable by toggle means 22 operated by piston-rod 23 of pivoted hydraulic means 24. A table 15, to which is secured a bending former 16, is formed with a depending pivot 14 engaged in the bore of the drive shaft 11 and is coupled to the table 12 of said drive shaft by a key 17 engaging a recess 18 in the table. In operation, a tube to be bent is pushed between the former 16 and clamp 21 until it abuts a stop to cause the clamp to move to grip the tube against the former. The shaft 11 and former 16 is then rotated to bend the tube, the trailing end of which bears against rollers 28. When the desired angle of bend has been reached actuation of a switch stops the drive and causes the toggle 22 to withdraw the clamp 21 away from the former 16. The clamp 21 in its withdrawn position causes a pressure medium to be introduced, through a pipe 19, into the bore of the drive shaft 11 to lift the table 15 and former 16 so that the key 17 rises out of the groove 18. When the desired height is reached the table 15 operates a switch 26 to cause the drive to return the shaft 11 and clamp 21 to their starting position, the bent tube holding the former 16. The guide rollers 28 and a bending mandrel are then withdrawn and the workpiece pushed out. The former 16 then returns under the action of a torsion spring to its starting position, being supported during this movement by rollers on the table 12, where the key falls into the groove 18 and the rollers enter depressions on the table 12 so that the table 15 moves down into driving connection with the table 12. The switch 26 also ensures that the clamp 21 can be moved forward only when the former 15 is in its starting position.
Patent GB-103034-A (GB)
Title: An Improved Automatic Locking Device for Railway Carriage Doors or the like.
Inventor: GREEN WILLIAM HAWORTH
IPC: E05B65/42
Filed: 1916-03-09
Abstract: 103,034. Green, W. H., and Stevens, C. H. March 9, 1916. Railway-carriage doors, fastening automatically. --The movement of a governor c mounted on an axle a of the carriage is transferred to " slam " bolts j, Fig. 2, through a rod p disposed transversely beneath the carriage and connected by bell-crank levers q to two rotatable rods r running the length of each side of the coach, the bolts j are connected through bell-crank levers u, links t, and levers q with the rotatable rods r. A collar k on the sliding sleeve c of the governor operates the transverse rod p through levers and links l, m, n, o carried by a bracket i supported from the underside of the coach.
Patent GB-469678-A (GB)
Title: Improvements relating to operating mechanism for vehicle brakes
IPC: B60T17/18
Filed: 1936-02-06
Abstract: 469,678. Fluid - pressure brakes. BENDIX, Ltd., and IRVING, J. S. Feb. 6, 1936, No. 3569. [Class 103 (i)] A brake operated by a rod 3 and a pedal 2 may also be operated in emergency by a vacuum or fluid-pressure cylinder 6, by connection to a reservoir 11, by one of the valves 9 arranged in parallel and in various parts of the vehicle so as to be operated by the driver, conductor, &c. Pipe 7 may be controlled by an electrically operated valve having a number of switches arranged in parallel.
Patent GB-179122-A (GB)
Title: Improvements in and relating to hydraulic pumps and transmission gear
IPC: F04B1/04
Filed: 1921-06-01
Abstract: 179,122. Hutchison, G. H., and McLean, D. S. June 1, 1921. Hydraulic transmission of power; liquidpressure engines. - In pumps or motors of the type comprising rotating radial cylinders c in which slide pistons c<1> engaging an adjustable eccentric track d, the central stationary valve f is formed as a cylindrical member having portions cut away on opposite sides of the axis to form in conjunction with a cylindrical chamber in the body of the rotor a inlet and discharge passages for the working fluid. The faces of the valve over which the liquid passes are carefully machined and rounded off, as shown at l in a doublevalve for a pump and motor adjacent, to minimize friction and eddy losses. Extensions f<1> are formed on the valve to carry bearings for the rotor a, and the faces of the central web g may be formed concave. A bearing-plate m pressed by small springs m<1> against the rotor face is preferably employed to prevent leakage of the working fluid from one side of the valve piece to the other. Passages x are provided to allow working fluid leaking past the valve end to pass into the casing. A thrust bearing q is provided to take axial thrust on the rotor, the driving-shaft a<1> of which passes through an oil-tight bush s.
Patent GB-210983-A (GB)
Title: Improvements in or connected with cabinet handles and the like
IPC: A47B95/02
Filed: 1923-02-08
Abstract: 210,983. Shaw & Co., Ltd., A., and Rose, C. E. Feb. 8, 1923. Handles.-A drop handle comprises an attachment plate 1 from the centre of which is cut out a tongue 2 so that the tongue is entirely bordered by the plate, and a handle 4 engaging at its inner end 5 a channel or recess at 6 formed by the back of the tongue. The free end 7 of the tongue serves as an attachment piece and lies when fastened entirely within the slot left by cutting it out from the plate and provides an unbroken surface on the latter.
Patent GB-745617-A (GB)
Title: Improvements in covered sliding clasp fasteners
IPC: A44B19/30
Filed: 1954-02-09
Abstract: 745,617. Sliding clasp fasteners. HAIR, D. L. Feb. 9, 1954, No. 3812/54. Addition to 745,564. Class 44. In the fastener disclosed in the parent Specification, the teeth on one side of a member and the recess on the other side are so shaped as to form a frustum having an axis which is inclined to a plane normal to the width of the member. As shown, a hexagonal frusturn-shaped tooth b is formed on one side of a body portion of each interengaging member, a corresponding recess being provided on the other sider of the member. The member is formed with a bulge a which is engaged by a wall of a slide h. The base of the slider is provided towards its opening end with a shoe j formed by a fin r which rides on the fastener members, and the floor of the slider is sloped at its other end, from each side wall towards its centre line. In small fasteners, stoppers c, provided on the interengaging members, may be dispensed with.
Patent GB-259097-A (GB)
Title: Magneto
IPC: H02K21/32
Filed: 1925-08-10
Abstract: 259,097. Perisset, J. E. Aug. 10, 1925. Magneto-electric machines.-The magnet of an ignition magneto is arranged with its legs parallel to the armature axis, and in the chamber thus formed between the armature and the arch of the magnet are arranged a series spark-gap and a safety spark-gap. The magnet b is secured to the casing a of the machine by a screw c. The series spark-gap occurs between a distributor arm h<1> and studs d' connected to the spark-plugs. The studs d' are shaped as shown at 6 to a concavity concentric with the path of the distributor arm h'. The safety spark-gap occurs between the ends d<2> of the studs d<1> and the edge of a ventilating opening e<1> in the casing a. The condenser g is held in place at the end of the armature by springs 10.
Patent GB-812132-A (GB)
Title: Improvements in hydraulic control apparatus
Inventor: GARDNER ROBERT STEVENSON
IPC: F16H61/46
Filed: 1955-02-09
Abstract: 812,132. Fluid-pressure servo motor-control apparatus. COAL INDUSTRY (PATENTS) Ltd. Feb. 9, 1956 [Feb. 9, 1955], No. 3876/55. Class 135. An hydraulic pressure control apparatus comprises a first loaded piston 3 in a first cylinder 1 and a second loaded piston 4 in a second cylinder 2 both pistons being exposed to the controlling hydraulic pressure in a duct open to. one side of the pistons so that as this pressure rises the first piston uncovers a passage 5 interconnecting the two cylinders on the opposite sides of the pistons to allow liquid to pass to an outlet conduit 7. The second piston 4 closes the outlet conduit upon a further rise in the controlling pressure and so leads to a still more rapid rise in the controlling pressure. The speed of movement of the piston 3 is limited by causing it to displace liquid through a throttle passage 8 provided with an adjustable needle valve (not shown). The interconnecting passage 5 has considerable depth at the end opening into the cylinder 1 but at its other end opens into a shallow annular chamber 14 which is blocked by a small movement of the piston 4. The cylinders 1, 2 are permanently connected by a passage 13 and are open to the controlling pressure in a conduit 6. The pistons 3, 4 are loaded by weights 10, 11 the movements of which are limited by adjustable abutments 9, 12. The invention is suitable for use with the hydraulic speed regulator for winding, hoisting, hauling and like engines described in Specification 690,931.
Patent GB-544025-A (GB)
Title: Improvements in couplings for the tubular sections of cattle stalls or other structures wherein the tubes are used to convey water or other fluid
IPC: F16L41/02
Filed: 1941-03-21
Abstract: 544,025. Couplings for tubular structures. BROWN, J. W., and YOUNG & CO. (WESTMINSTER), Ltd. March 21, 1941, No. 3883. [Class 99 (i) ] [Also in Group X] In cattle stalls or other tubular structures wherein tubes H, H<SP>1</SP> are connected together and serve to convey water or other fluid or vacuum, the tubes are coupled together by. a sleeve A which is screwed to one tube H and has its other end reduced at A<SP>1</SP> to receive a screwed flanged member M carrying a washer F, which is screwed in abutting relationship with the tube H<SP>1</SP> by a cap nut D. The sleeve A may carry a split socket B for attachment to the top of a tubular upright K, and another socket C for attaching a pipe J, which may, for example, serve for supplying water to a drinking-trough.
Patent GB-346893-A (GB)
Title: Improvements in and connected with screws
IPC: F16B15/04
Filed: 1930-02-05
Abstract: 346,893. Screwdrivers. LID BETTER, J., 60, Hanover Terrace, Brighton. Feb. 5, 1930, No. 3927. [Class 61 (iii).] A screwdriver 9, shaped to engage a slot or a square recess in the head of the screw, is provided with a projection 10 to engage a longitudinal hole in the screw.
Patent GB-782382-A (GB)
Title: Improved device for weaving and weaving processes carried out therewith
IPC: D03D47/20
Filed: 1955-02-10
Abstract: 782,382. Shuttleless looms. PARKEPPA, P., and STOHR, F. J. Feb. 10, 1955 [Feb. 15, 1954], No. 4068/55. Classes 142(2) and 142(4) A multiple weft inserting needle, Fig. 1, comprises two (or more) arms 1a, 1b, extending from opposite ends of a crosshead 2 reciprocating between pairs of superposed sheds, whereby wefts are inserted into sheds A, Band C, D alternatively to weave two tubular or two-ply fabrics or four single-ply fabrics. Knitted selvedges are formed at the outer edges of tubular fabrics by drawing each lower weft loop through the simultaneously inserted upper weft loop and through the each preceding lower weft loop, or by drawing loops of a separate catch thread through the weft loops. Sacks can be made by weaving separate layers of fabric, united at one selvedge, for a distance equal to the width of . a sack, then combining the two warps into one layer along two lines spaced apart by a narrow zone of separate weaving and cutting along the narrow zones. Healds. The mails, Fig. 3a, consist of pairs of short rods R fixed between a pair of strips S, there being two such mails spaced apart vertically to manipulate a warp thread belonging to each of the superposed sheds. Lease rods. The warp for the upper shed passes under, and the warp for the lower shed over, a single lease rod; the upper warp then passes over the upper one of a pair of vertically-spaced lease rods, and the lower warp passes under the lower rod of the pair.
Patent GB-556467-A (GB)
Title: Improvements in protective systems and apparatus for circuits utilising rectified orunrectified a.c.
IPC: H03F1/54
Filed: 1942-03-30
Abstract: 556,467. Protective cut-out arrangements. WILKINS, S. R., and AUTOMATIC COIL WINDER & ELECTRICAL EQUIPMENT CO., Ltd. March 30, 1942, No. 4210. [Class 38 (v)] A transformer has windings 12, 13 supplying high voltages to the anode and screen grid of a thermionic valve over rectifiers (not shown), and a winding 14 supplying unrestricted A.C. to the heater. The anode and screen grid leads 15, 16 include windings 21, 22 of a polarized relay 20, the armature 23 of which normally holds the contacts 15b, 16b closed by the polarizing field assisted by the windings 21, 22. If, due to failure of a smoothing condenser or rectifier, or to a wrong connection to the winding 14 whereby the valve heater is connected to leads 15, 16. an excessive alternating current flows in either winding, the polarizing field is neutralized in the first reverse half-cycle and a spring 25 pulls off the armature and opens the supply. In the event that the same alternating current could flow in opposite directions through windings 21, 22, thereby neutralizing their effects, one of them may have more turns than the other. A manual resetting means for the switch may be provided, and a back-contact 26 on the armature may make an indicator circuit. A construction of switch 20 is illustrated, Figs. 2, 3 (not shown). Each of the windings 21, 22 may act as polarizing field to the other.