baber/WOPTO huggingface dataset:
Patent GB-846150-A (GB)
Title: Improvements in or relating to magnetic filters
IPC: B01D35/06
Filed: 1957-10-18
Abstract: 846,150. Magnetic filters. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 18, 1957 [Oct. 22, 1956], No. 32605/57. Class 117 [Also in Group I] A magnetic filter for treating fluids comprises a permanent magnet 18 having pole pieces 2, 3 and surrounded by a cage member consisting of rods 4 supporting soft iron rings 5. The cage member is itself surrounded by a cylinder 6 provided with longitudinal slots 7 and is located in a slot 15 formed in a base plate 11; the slots 7 may be covered with gauze or sintered material to provide a mechanical filter. A cover 14 enables the filter members to be removed for cleaning. Fluid to be treated enters the filter via an inlet 8 and, after circulating in a helical path in the vicinity of the cage, passes through holes 9, or between the cylinder 6 and the cage, before flowing through an outlet 10. In a modification, the slotted cylinder is located between the magnet and the cage, Fig. 3 (not shown).
Patent GB-1035538-A (GB)
Title: System for detecting derailment of railway vehicles and automatically initiating an emergency braking operation, and safety device therefor
Inventor: MATSUDAIRA TADASHI
IPC: B60T17/20
Filed: 1964-08-11
Abstract: 1,035,538. Fluid pressure brakes. NIPPON KOKUYU TETSUDO. Aug. 11, 1964, No. 32706/64. Heading F2F. [Also in Division B7] An arrangement for detecting derailment of a vehicle of a train and automatically applying emergency braking to the train comprises a device operated by the vertical acceleration imparted to the derailed vehicle as it runs on the rail ties or sleepers which vents the train brake to the atmosphere. Each device is positioned adjacent a vehicle axle and may comprise a cylindrical housing C with a cap D secured to the housing and connected via a pipe 4a and normally open valve 5 to brake pipe 1. A breakable plate 7 of a material such as glass is secured between the cap and the housing and prevents venting of the brake pipe via chamber 9 and vent ports 10. A weight 11, vertically slidable in the housing C is maintained by spring 13 in the position shown until derailment of the vehicle when vertical acceleration forces move the weight vertically against the action of the spring whereby a projection 12 on the weight breaks the glass and the brake air pipe is vented.
Patent GB-377871-A (GB)
Title: Improvements in and relating to kerr cells
IPC: G02F1/07
Filed: 1931-11-25
Abstract: 377,871. Electro-optical light valves. GRAMOPHONE CO., Ltd., Hayes, Middlesex, and WRIGHT, W. D., 69, Lakeside Road, Palmer's Green, London. Nov. 25, 1931, No. 32737. [Class 40 (iii).] In a Kerr cell comprising a pair of electrodes having co-operating surfaces between which a controlling electric field can be established, the distance between the electrodes varies along the lengths of the co-operating surfaces. The image of a, light-source is brought to a focus in the plane 8, and the co-operating electrodes 6, 7 are shaped so that their co-operating surfaces conform to the shape of the incident and emergent beams. The surfaces may be frustoconical, or wedge-shaped with a square cross section. The angles of the plates are adjusted in accordance with the refraction of the beam on entering and leaving the medium of the cell.
Patent GB-1095667-A (GB)
Title: A novel 9ª‰, 10-ª‡steroid
Inventor: REERINK ENGBERT HARMEN
IPC: C07J5/00
Filed: 1965-07-19
Abstract: The novel 2-hydroxymethylene-17b -hydroxy-9b ,10a  - androst - 4 - en - 3 - one is prepared by reaction of the 2-unsubstituted compound and an alkyl, e.g. ethyl, formate in the presence of sodium methylate and preferably in pyridine, followed by acidification.
Patent GB-1526109-A (GB)
Title: Polyorganosiloxanes containing homogeneously distributed fillers
IPC: C08L83/04
Filed: 1976-08-06
Abstract: 1526109 Filled polyorganosiloxanes BAYER AG 6 Aug 1976 [7 Aug 1975] 32850/76 Heading C3T Filled polyorganosiloxanes are formed by mixing the siloxane, water, a modifier (R 3 Si) n X (R=up to C 10  substituted or unsubstituted saturated or aliphatic unsubstituted hydrocarbon radial; X=Ha, N, S, OH, OR, OOCR, NH or NR; n= 1, 2 or 3), and highly disperse active silica of specific surface area at least 50 m<SP>2</SP>/g. and subsequently cold curing the mixture. The modifier is preferably added before the silica. The mixtures result in uniform storage-stable distribution of the filler without recourse to dispersing agents or surface-treatment of the filler.
Patent GB-506510-A (GB)
Title: An improved railway rail chair
IPC: E01B9/60
Filed: 1937-11-29
Abstract: 506,510. Rail chairs. BAUGHAN, R. A., and SMITH, A. J. Nov. 29, 1937, No. 32869. [Class, 104 (ii)] A rail chair comprises a base 11 provided with cross ribs 16 for preventing movement of the jaws 1, 2, which engages the rail without the use of keys. The rails rest on blocks 10 integral with the ribs 16. The jaws and base are secured to the sleeper by spikes passing through holes 3, 4 in the jaws and holes 14 in the base. In the form shown in Fig. 3, the jaws are secured together by bolts 20 passing through lugs depending from their bases 1.
Patent GB-799028-A (GB)
Title: Improvements in or relating to tapering pin-and-box type threaded couplings
IPC: F16L15/06
Filed: 1956-10-29
Abstract: 799,028. Rod, &c. couplings. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Oct. 29, 1956 [Oct. 31, 1955], No. 32954/56. Addition to 786,652. Class 99(1). [Also in Group XXIV] In the pin-and-box coupling described in the parent Specification in which the pin 2 and the box 4 are provided with tapered screw-threads 7, 8 such that, when the coupling has been tightened up, the outer flanks of the screwthread 7 and the inner flanks of the screwthread 8 are more heavily loaded than the other flanks, the screw-thread 7 has a pitch greater than that of the screw-thread 8 and the difference in pitch decreases from the middle of the screw-threads towards the ends thereof. The outer and inner flanks are defined as those directed respectively away from and towards a plane M normal to the axis 9, of the coupling. As shown, the pin 2 is provided with a shoulder 5 which abuts a shoulder 6 formed on the box 4. The generatrix of the crests of the screwthread 7 may diverge with respect to the generatrix of the roots from the ends towards the middle of the screw-thread.
Patent GB-199327-A (GB)
Title: Improvements relating to automatic telephone systems
IPC: H01H67/12
Filed: 1922-01-16
Abstract: 199,327. Lenaghan, T. Jan. 16, 1922. Selectors of the panel type are given an initial rotary movement so as subsequently to travel over one of several vertical columns of terminals, no rotary movement being necessary if the wanted terminals are in the first column. The arcuate terminal banks are formed by the ends of punching c projecting at both sides of the panel. The wipers a are spaced as shown with intervening terminals, which are subsequently engaged. The wiper carriage e is rotated by means of a lever h pivoted on the shaft b and having a hanged tailpiece i normally held in alignment by a spring k, The wipers are moved from the first to the second angular position by the energization cf a magnet p acting on the tail piece i, and to the third position by the energization of a magnet o acting on the lever h, causing yielding of the tail piece. The rotation may also be effected by ratchet mechanism. Specifications 189,822 and 200,845 are referred to.
Patent GB-175437-A (GB)
Title: Improvements in internal combustion engines, with cylinders parallel to the shaft
IPC: F01B3/04
Filed: 1920-11-24
Abstract: 175,437. Binks, H. K. Nov. 24, 1920. Valve-gear.-A number of cylinders Bare arranged parallel to the shaft V and drive it by crossheads D which engage undulating grooves in the inner and outer surfaces of two cylinders H. The crossheads are guided in a straight line by working in slots in another cylinder E situated between the cylinders B and secured to the baseplate W. A charge is drawn from a carburettor into the base-plate end of the cylinders, and is transferred after compression to the other side of the piston through ports T uncovered by it. The rush of gas through these ports induces air through other ports J in the cylinder wall. The exhaust valves are worked by a cam R through rods M, ar.d these rods have a cam surface which turns a cam ring about each cylinder and opens the valves which control the air ports J. The combustible-charge admission valves are opened by a cam A.
Patent GB-1389356-A (GB)
Title: Piezo-electric lighters
IPC: F23Q3/00
Filed: 1973-07-12
Abstract: 1389356 Piezoelectric generators ETABS GENOUD & CIE 12 July 1973 [28 July 1972] 33278/73 Heading H2A A piezoelectric lighter has only one operative energy storage spring. In the arrangement shown, pressing a casing part 1 downwards causes ramp sections 2a of a pair of grooves 2 (only one seen in Fig. 2) to release the lug 6 of a hammer 5 from notches 4a in a pair of grooves 4 in a fixed casing part 3, and thereby allows a compressed spring 7 to propel the hammer towards an anvil 9, the lug 6 sliding in contact with the edges 12, 11 of the grooves 2, 4 as in Fig. 3. The spring 7 however is not able to release all its energy in this movement and remains partly compressed in the impact position. When therefore the operator releases part 1, the spring expands further and is able to push the part 1 back to its original position, the friction between the lug 6 and the sloping edges of the grooves assisting in this restoration movement. The grooves in each part are arranged to be mirror images of each other (as in Fig. 5, not shown) so that the lug and hammer twist relative to the spring.
Patent GB-282087-A (GB)
Title: Improvements in the control of rotary transformer means for coupling two alternating current networks consisting of a synchronous and an asynchronous machine with a commutator cascade machine
IPC: H02K57/00
Filed: 1927-12-09
Abstract: 282,087. Akt.-Ges. Brown, Boveri, et Cie. Dec. 13, 1926, [Convention date]. Drawings to Specification. Equalizing load on generator.-A rotary transformer coupling two alternating current systems and consisting of synchronous and asynchronous elements is regulated by a commutator machine cascaded with the asynchronous element so that the rate and direction of power transmission is varied in proportion to the duration of the frequency of one system from a mean value. This is effected by means which automatically regulate that component of the armature voltage of the cascade machine which is in phase, or opposition of phase, with the slip voltage of the asynchronous element according to the expression c(fm-f)-Es, where Es= the slip voltage of the asynchronous element c is a constant and fm-f = the deviation of frequency.
Patent GB-1398423-A (GB)
Title: Chain welding machines
IPC: B23K11/31
Filed: 1972-07-17
Abstract: 1398423 Welding by pressure MEYER ROTH & PASTOR MASCHINENFABRIK GmbH 17 July 1972 33399/72 Heading B3R An electric chain link welding machine has two electrode heads of the same type, arranged opposed and symmetrical with respect to each other, each head comprising two electrodes 26, 27 which face each other and are carried at the ends of respective arms 16, 16 that lie substantially symmetrically on opposite sides of a vertical plane containing a chain link to be welded, the arms of each pair being both swingable in unison up and down and movable towards and away from one another and said plane, lifting and lowering means 6, 9 being provided to urge the arms 16, 16 positively up and positively down and separate opening and closing means 32, 33 being connected to both arms to urge the arms towards or away from one another, whereby the electrodes can be brought in contact with and pressed on to the chain link from above and opposite sides simultaneously with movements and pressures which have components both parallel to the said plane and perpendicular thereto. One head 5 of the chain welding machine carries a cylinder 6 and the piston 9 therein is connected by its pistonrod 10 to a sleeve 11 which slides over the cylinder 6. A pair of upwardly projecting members 12 on the top of the sleeve 11 support a shaft 13 on which a strap 15 is carried by a ball joint, the strap 15 being mounted on a shaft 14. The ends of the shaft 14 are mounted by ball joints in horizontally extending levers 16, 16 which are pivotally mounted at their ends on a shaft 19 by ball joints 18. The shaft 19 is carried in a block 20 adjustably mounted on a threaded rod 21 carried in a bracket 23 secured to the head 5. The bearing 18 in one lever 16 is adjustable by a screw 30. The electrodes 26, 27 are carried at the ends of the levers 16, 16 remote from the pivot 19 and a cylinder 32 is carried on one lever 16 adjacent the electrode 26, the piston 33 thereof being connected to the other by rods 34, 36. A linkage having links pivoted to the ends of a lever 41 on a pin 40 on the slide 11 connect the levers 16, 16 for symmetrical movement. Vertical adjustment of the levers 16, 16 is provided for by eccentric pins 48 in engagement with piston-rods 50 in cylinders 49. In operation fluid supply to the cylinder 6 causes pivoting of the arms 16, 16 about the pivot 19 and fluid supply to the cylinder 32 causes movement apart of the levers 16, 16 and opening of the electrodes 26, 27. Fluid supply in the opposite direction causes lowering of the electrodes on to a link to be welded and closing of the electrodes, the cylinders 49 being exhausted.
Patent GB-488472-A (GB)
Title: Improvements relating to lamps
IPC: F21V11/00
Filed: 1937-12-03
Abstract: 488,472. Signal lamps &c. BIKKER'S POLYTECHNISCH BUREAU EN HANDELMAATSCHAPPIJ, N. V. Dec. 3, 1937, No. 33504. Convention date, June 25. [Class 75 (iv)] A lamp for use in air raids comprises a number of apertured light absorbing chambers 11, 12 and 13, and a wall 9 screening light from those side walls of the outside chamber 13 visible from without. The lamp may have lenses inside and telescopic parts to vary the light divergence. The lamp bulb 6 may be frosted or a frosted glass 8 may cover an aperture, the screens 7, 9, 10 may be conical or helical and the apertures therein oval, rectangular, or triangular. The lamp can be fixed to the side of a vehicle by brackets 2 and 3, or to a street kerb, or may form part of a hood over vehicle headlamps or street lamps, or be for railway or marine use in signalling.
Patent GB-805583-A (GB)
Title: Steroid compounds and methods for preparing them
IPC: C07J75/00
Filed: 1955-11-28
Abstract: The invention comprises cyclopentanophenanthrene compounds of the general formul  <FORM:0805583/IV (b)/1> and <FORM:0805583/IV (b)/2> wherein R represents a group convertible to a hydroxy group by hydrolysis, and X represents chlorine or bromine, and the preparation thereof by brominating, e.g., with bromine, a 3-R-5-(bromo or chloro)-bisnorcholanal compound, wherein R has the above significance to produce a compound of the first general formula, and, when required, dehydrobrominating the 3-R-5-(bromo or chloro)-20-bromo-bisnorcholanal to form a compound of the second general formula.  A compound of the second general formula is also obtained by reacting a 3-R-5 (bromo or chloro)-bisnorcholanal with bromine in the presence of a weak organic base, and preferably in the presence of an extraneously added bromination catalyst.  The dehydrobromination step may be carried out with an organic base or with a solution of a metallic halide, e.g. lithium chloride, magnesium chloride, beryllium chloride and aluminium chloride, or hydrogen bromide in an amide solvent such as an N,N-dialkylacylamide particularly of the formula <FORM:0805583/IV (b)/3> in which R1,R11 and R111 are alkyl groups containing from 1 to 6 carbon atoms. Suitable organic bases for the dehydrobromination step are collidine, pyridine, lutidine and diethylaniline.  Suitable weak organic bases are N,N - dialkylacylamides, particularly of the above general formula. Bromination catalysts mentioned are hydrogen bromide, sulphuric acid and organic sulphonic acids such as p-toluene sulphonic acid. In the examples the following compounds are prepared: 3b -acetoxy-5a  - chloro - 20 - bromo - bisnorcholanal, and 3b  - acetoxy - 5a  - chloro - 17(20) - bisnorcholenal. Specifications 805,584 and 805,585 are referred to.
Patent GB-154623-A (GB)
Title: Improvements in devices for tightening plates and other members
IPC: B25B31/00
Filed: 1920-12-02
Abstract: 154,623. McBride, J. P. Sept. 23, 1918, [Convention date]. Cramps. - A device for clamping together plates to be riveted, or other objects, comprises an hydraulic or other fluid pressure cylinder having a projecting piston provided with means for engaging a bolt passed through holes in the plates &c. and clamping them together against the end of a distance piece interposed between the plates and the end of the cylinder. As shown, the piston rod 2 of a cylinder 1 is screwed for a nut 4 engaging one end of a yoke 11 slotted at the other end 13 to engage under a nut 14 on a bolt 7 passed through holes in the plates 5, 6. After the plates have been drawn tightly together, the nut 8 on the bolt may be readily screwed up. A distance piece 9 having an opening 10 for the passage of the rod 2 transmits the pressure of the plates to the end 3 of the cylinder 1.
Patent GB-1443981-A (GB)
Title: Process for casting methacrylatic acid polymer plate
IPC: C08F220/04
Filed: 1973-07-18
Abstract: 1443981 Producing methacrylic acid polymer plates MITSUBISHI RAYON CO Ltd 18 July 1973 [27 July 1972] 34225/73 Heading C3P A flame-retardant and antistatic methacrylic acid polymer plate is produced by bulk polymerizing in a mould, a mixture of (A) 20-100% of methacrylic acid based on the weight of (A) and (C); (B) water in an amount of at least 1% (on the same basis as (A)) and simultaneously in an amount of 0À1 to 1 mole per mole of methacrylic acid; and (C) 0-80% (on the same basis as (A)) of at least one ethylenic copolymerizable comonomer which will form a homogeneous transparent solution with (A) and (B) at 25 C. A preferred mixture comprises (A) 20-60% methacrylic acid; (B) water in the same mole amount as above and at least 1 wt. per cent based on the total monomers; (C1) 30-65% methyl methacrylate; (C2) 3-15% acrylamide and (C3) 3-15% styrene; the percentages of (A), (C1), (C2) and (C3) being based on the total weight of these four monomers. In addition, 1-25 wt. per cent based on the total weight of (A), (C1), (C2) and (C3) of a compound selected from tri-C 1-8  alkyl phosphates tri-C 6-14  aryl phosphates, trishalogenated C 2-6  alkyl phosphates or phosphonates and halogenated C 2-6  alkyl polyphosphates may also be present, as can one or more dialkyl esters of phthalic acid with 20-34 carbon atoms per molecule, dialkyl esters of dibasic fatty acids with 18-36 carbon atoms per molecule, or alkyl esters of monobasic fatty acids with 20-40 carbon atoms per molecule; one or more copolymerizable diethylenic comonomers; and/or a C 2-12  alkyl acid phosphate. In the examples the mixtures are polymerized between sheets of glass. Specification No. 1,443,982 is referred to.
Patent GB-1323975-A (GB)
Title: Spark gap system of a magnetically quenched surge arrester
IPC: H01T4/16
Filed: 1971-07-21
Abstract: 1323975 Spark gap BROWN BOVERI &  CO Ltd 21 July 1971 [23 July 1970] 34276/71 Heading H2H A spark gap system for a magnetically quenched surge voltage arrester comprises two sector-shaped are chambers 2, 2 each containing electrode pairs 3, 4 connected in parellel, together with ducts 5-7 for ionized gases connecting the two chambers in such a way that an arc struck in one chamber is transferred rapidly back and forth between the two chambers until the arc at either electrode pair cannot be restruck. Owing to the effect of a blowing coil an arc in one chamber is elongated so that it extends away from its striking position 8; on reaching its maximum magnitude the arc continues to burn until it passes through an aperture 7 into a duct 5. Ionized arc gases are fed into the second chamber by way of an aperture 6, and an arc will strike between the electrodes of this chamber since the voltage of the original arc is now applied thereacross; the whole arc transfers to the second chamber since the are length (and hence the are resistance) is initially less therein. The process is repeated until the current has been reduced to such an extent that the arc is extinguished. More than two parallelconnected chambers may be used in the system, as shown.
Patent GB-367024-A (GB)
Title: Process for the manufacture of acridine derivatives
IPC: C07D219/08
Filed: 1930-11-14
Abstract: 3-Aminoacridines are manufactured by reducing 3-nitroacridone or substitution products thereof by means of sodium amalgam.  The starting materials may be prepared by ringclosure of the products of the condensation of 4-nitro-2-chlorobenzoic acid with aromatic amines.  The products are useful as therapeutic substances or as intermediates for the preparation thereof.  Examples describe the preparation of: (1) 3-aminoacridine from 3-nitroacridone; (2) 3 - amino - 7 - methylacridine from 3-nitro-7-methylacridone, prepared by ring closure of 4<1>-methyl-3-nitrodiphenylamine-6-carboxylic acid obtained by condensing 4-nitro-2-chlorobenzoic acid with 4-toluidine; 3-amino-6 - methylacridine from 3 - nitro - 6 - methyl-acridone, obtainable from 3<1>-methyl-3-nitrodiphenylamine - 6 - carboxylic acid; (3) 3-amino-7-chloroacridine from 3-nitro-7-chloroacridone, prepared by ring closure of 4<1>-chloro-3 - nitrodiphenylamine - 6 - carboxylic acid, obtained by condensing 4-nitro-2-chlorobenzoic acid with 4 - chloraniline; (4) 3 - amino - 7 - ethoxyacridine from 3-nitro-7-ethoxyacridone, obtainable from 4<1>-ethoxy-3-nitrodiphenylamine-6-carboxylic acid; 3-amino-6 : 7-dimethoxyacridine from 3-nitro-6 : 7-dimethoxyacridone, obtainable from 3<1> : 4<1>-dimethoxy-3-nitrodiphenylamine-6-carboxylic acid; (5) 3-amino - 7 - ethylacridine from 3 - nitro - 7 - ethylacridone, obtainable from 4<1> - ethyl - 3 - nitrodiphenylamine-6-carboxylic acid.  Specification 364,033, [Group III], is referred to.
Patent GB-803251-A (GB)
Title: Centrifugal friction clutch
IPC: F16D37/00
Filed: 1956-11-09
Abstract: 803,251. Friction clutches. MEDER, M. Nov. 9, 1956 [Nov. 12, 1955], No. 34400/56. Class 80 (2). In a centrifugal clutch of the kind wherein elements 7, carried between radial blades 6 of a driving member 5, are engaged centrifugally with the inner periphery of a driven chamber 1, axial wedging pressure against the end-walls 2 of the chamber, such as would occur if balls were used as the centrifugal elements 7, is avoided by using axially disposed cylindrical steel rods 7 terminating short of the end-walls. The chamber has a replaceable lining 11.
Patent GB-1533949-A (GB)
Title: Pulse generator
IPC: H03K17/60
Filed: 1977-08-16
Abstract: 1533949 Transistor pulse generators INDUSTRIELLE ELEKTRONIK AGIE LOSONE BEI LOCARNO AG 16 Aug 1977 [18 March 1977] 34424/77 Heading H3T In a pulse generator comprises a number of similar stages, each including a transformer 11 ... n1 and a transistor 12 ... n2 saturation of the transistors is prevented by the inclusion of a secondary winding on each transformer which is coupled between the respective base and collector via a diode 13 ... n3. The primary of the first stage transformer is coupled to a pulse source 3 which produces pulses to overcome the bias of source 2 and turn transistor 12 on. When the collector potential falls sufficiently for diode 13 to conduct current is diverted away from the base, thus limiting the base drive to that sufficient to just turn on the transistor. The transformer of the further stages have their primaries connected in series to the output of the first stage, and one or more stages may be inhibited by turning on respective control transistor 15 ....n5.