baber/WOPTO huggingface dataset:
Patent GB-1077695-A (GB)
Title: 5-nitroimidazole derivatives
IPC: C07D233/92
Filed: 1966-08-04
Abstract: The invention comprises as novel compounds the C1- 8 hydrocarbon esters, the salts, the acid chlorides and the acid bromides of 1 - (C1- 5 alkyl) - 5 - nitroimidazole - 2 - carboxyli acids, and the preparation thereof (1) by reacting a 1 - (C1- 5 alkyl) - 2 - hydroxymethyl-5 -nitroimidazole with an oxidizing agent in an alkaline medium to produce an alkali metal salt of 1 - (C1- 5 alkyl) - 5 - nitroimidazole - 2 -carboxylic acid, (2) by reacting a salt of 1-(C1- 5 alkyl) - 5 - nitroimidazole - 2 - carboxylic acid with a chlorinating or brominating agent to produce the corresponding acid chloride or bromide, or with an esterifying agent in a solvent medium to produce a C1- 8 hydrocarbon ester of the acid, (3) by reacting a 1-(C1- 5 alkyl)-5-nitroimidazole-2-carboxylic acid ester with a chlorinating or brominating agent to produce the corresponding acid chloride or acid bromide, or (4) by reacting a 1-(C1- 5 alkyl)-5-nitroimidazole -2-carbonyl chloride or bromide with an alcohol in the presence of an acid binding agent to produce the corresponding C1- 8 hydrocarbonyl ester.  The salts of the invention may also be prepared from the C1- 8 hydrocarbonyl esters.  The 1 - (C1- 5 alkyl) - 2 - hydroxymethyl - 5-nitroimidazoles are prepared by nitrating 2-hydroxymethyl-imidazole, if desired after first protecting the hydroxy group by esterification or etherification, the protective group being removed after the nitration reaction, and alkylating the 2-hydroxymethyl-5-nitroimidazole thus prepared. 2-Acetoxymethyl-imidazole is prepared by reacting 2 hydroxymethyl-imidazole with acetic anhydride and liberating the base from the 2-acetoxy-methyl-imidazole acetic acid salt formed. Imidazole-2-carboxaldehyde is obtained as a by-product when 2-acetoxymethyl-imidazole is reacted with nitric acid.  Ethyl 1 - methyl - 5 - nitroimidazole - 2-carboxylate has anti-histomonal activity and may be formulated for veterinary use as aqueous solutions or be admixed with feedstuff.
Patent GB-994107-A (GB)
Title: Method of separating out the unwanted ingredients of tobacco smoke
IPC: A24D3/16
Filed: 1964-05-06
Abstract: The invention comprises a method of separating out unwanted ingredients of tobacco smoke and a filter using the method.  The method consists in passing the smoke gases through an intimate mixture of fine solid particles, one ingredient of which forms one electrode and the other ingredient of which forms the other electrode of a large number of galvanic micro cells which become such by the aerosol particles precipitated on such electrodes when the smoke starts.  Fine grains for a filter holder and fine filaments for a filter are given coatings of copper or silver and zinc by vapour coating and spraying to form electrodes of galvanic micro cells each cell having a voltage of 1v.
Patent GB-153370-A (GB)
Title: Improvements in or relating to electric motors
IPC: H02K7/12
Filed: 1919-07-31
Abstract: 153,370. Heurtebise, A. July 31, 1919. Motors, controlling.-A mechanical brake 5 acting on the shaft of an electric motor and a switch 13 are simultaneously operated through a lever 4 connected to an armature 2 which is drawn into a recess in the field-magnet pole 1 when the field winding is energized. In a modification, the lever 4 carries a contact which engages with the contacts of a resistance switch to cut out the resistance in the armature circuit.
Patent GB-1294411-A (GB)
Title: Improvements in or relating to thermal printing systems
Inventor: ELSTON WILLIAM ALLEN
IPC: B41J2/325
Filed: 1970-04-21
Abstract: 1294411 Selective printing TEXAS INSTRUMENTS Inc 21 April 1970 [8 May 1969] 18986/70 Heading B6F By interposing a ribbon 56 with a coating transferable with the application of heat between a paper web 46 and thermal matrix printing head 28 printing is effected on the web. In (Fig. 8), an insulator (80) is interposed between the head and the ribbon 56. Specifications 1,278,850 and 1,278,849 are referred to.
Patent GB-1498709-A (GB)
Title: Method of skewing twill fabric to avoid leg twist
IPC: D06C3/00
Filed: 1975-05-06
Abstract: 1498709 Finishing fabrics LEVI STRAUSS & CO 6 May 1975 [15 May 1974] 19023/75 Heading D1S A twill fabric is manufactured by weaving the fabric having a given twill direction on a loom, and, during preparation and finishing, skewing the fabric so that its edge in the direction of twill is advanced with respect to the opposite edge, relaxation of the skew being prevented during subsequent finishing steps. In the manufacture of blue denim jeans from 100% cotton twill, to avoid leg twist after laundering the amount of advance of the edge in the direction of the twill is at least 3% of the fabric width, preferably 4-10%, more preferably 8%. For a righthand twill fabric, the fabric is skewed in the counter clockwise direction and, for a left-hand twill fabric, the fabric is skewed in the clockwise direction. In one embodiment, Fig. 2, the fabric 11 passes around a padding roller 14 in a liquid 13, between squeeze rolls 16, 17, over a roller 18, and over skew rolls 19, 21, 23, i.e. inclined rolls, idler rolls 20, 22 separating the rolls 19, 21, 23. After skewing, the fabric passes a tension compensator between rolls 24, 25 and into a dryer 26. In another embodiment, Fig. 3, the fabric 33 is moistened in a steam spray chamber 31 and is guided by idler rolls 34, 37 around a skew roll 36. The fabric passes to the entry zone 32 of a compressive shrinking machine. In a further embodiment, Fig. 4, the fabric 41 passes from a bath 42 and into a tenter frame 43 comprising a hot air drying compartment 46 and tenter chains 47 carrying pins 48 or tenter clips. To introduce skew into the fabric 41, one chain 47 is driven faster than the other. The fabric is taken-up on a roll 44. For pre-drying the fabric, drying cans may be located between the bath 42 and the frame 43. In a still further embodiment (not shown), conical rolls are used to skew the fabric.
Patent GB-1061313-A (GB)
Title: Device for producing guilloched printing plates
Inventor: WACKERBARTH RUDIGER FREIHERR V
IPC: B41C1/02
Filed: 1965-05-06
Abstract: 1,061,313. Engraving. R. OLDENBOURG GRAPHISCHE BETRIEBE G.m.b.H. May 6, 1965, No. 19066/65. Heading B6J. For producing guilloched printing plates, the vertical position of a rotary engraving tool (14) Fig. 2, is varied by rotation of a screw (40) so as to vary the depth of cut if desired, and so as to leave a desired area of the plate unguilloched where it is desired to produce a different design. The screw is rotated by a servomotor (48) under the control of a photo-electric scanner (54) moving over an original (62) through which passes light (64). In another form, Fig. 4, the tool is controlled by two eccentrics (72, 74) to which are coupled plates (78, 80) carrying cams (82) controlling switches (84, 86) connected in a logic circuit (88), the control device (52<SP>1</SP>) producing a deeper cut at desired times. A third eccentric effects transverse displacement of the work-table (66) line by line. In another form, Fig. 6, the eccentrics are controlled by potentiometers (94, 96), the control device (52) acting to omit a rectangular region in the centre of the guilloche. In another form, Fig. 8, three control signal generator devices (106) corresponding to individual component motions are connected selectively through a series of jack panels (108, 112, 114, 118) to the device controlling the cutter (12).
Patent GB-260342-A (GB)
Title: Improvements in metallic packings, specially applicable for steam pipe expansion pieces
IPC: F16J15/26
Filed: 1925-07-28
Abstract: 260,342. United Kingdom Self - Adjusting Anti-Friction Metallic Packing Syndicate, Ltd., and Brooks, F. G. July 28, 1925. Packing, metallic.-A packing for expansion joints for steam-turbine pipes is arranged in a ,carrier K mounted in a stuffing-box t<1> formed in the face of the turbine casing. The carrier K is secured by a cap P and has a ball-seating shoulder k<4> against which a packing-ring A with curved and normal faces respectively abuts. The ring A is a free fit in the sleeve. A ring B engages ring A and the expansion piece S and is conically bored to house two lead-bronze or like bearing-rings C, D each provided with three diagonal cuts c', d'. A pair of rings E, F with interengaging spherical - surfaces and both free of the piece S, is arranged on the right of the rings B, C, D. The ring E engages the carrier K. Further rings B<1>, C<1>, D<1>, E<1>, F<1> similar to those described are housed in the carrier and the interior of the cap P. Rings E, E<1> F, F<1> are usually of Admiralty metal; the rings B, B' are solid steel; the rings E, E' have a single diagonal cut. A spring- pressed box N imparts end thrust to the packing.
Patent GB-774250-A (GB)
Title: Improvements relating to torsion-bar springs, particularly for motor vehicles
IPC: F16F1/14
Filed: 1955-07-01
Abstract: 774,250. Spring suspensions; torsion springs. DAIMLER-BENZ AKT.-GES. July 1, 1955 [July 2, 1954], No. 19105/55. Classes 108(2) and 108(3). Relates to a torsion bar spring arranged in a bearing by which a swinging guide member is pivotally mounted on a relatively fixed part. According to the invention, as applied to the independent wheel suspension of a motor vehicle, the torsion bar is divided into one or more outer tubular torsion bars arranged coaxially with the inner bar, one end of an outer bar being connected to the swinging member and one end of an inner bar being connected to the fixed part, whilst the other ends of the bars are extended to one side beyond the member and are coupled together, the first named end of the inner bar being extended beyond the bearing and being connected to the fixed part beyond the bearing, whilst the coupled ends of the bars are supported in freely projecting fashion. As shown, wheel suspension arms 16, 17 are attached to a tube 15 rotatably mounted in a tubular frame member 12 and an extension 20 of the tube 15 is coupled to a torsion bar 24 the other end of which is adjustably connected through an arm 28 to an apertured plate 30.
Patent GB-201561-A (GB)
Title: A method of and means for securing a strip of photographic film in a flat coil in a condition suitable for treatment by fluid
IPC: G03D13/14
Filed: 1922-04-01
Abstract: 201,561. Correx M³vek Filmipari GÚpgyßr C. Lßszl¾. Oct. 8, 1921, [Convention date]. Apparatus for developing and like treatment.- In the development &c. of roll films, more particularly kinematograph films, the film 1 is wound, together with a spacing-band 3, into a flat coil, and the edges 4 of the band are corrugated so as (1) to space both sides of the band from the adjacent surfaces of the film, leaving interspaces 2 for the circulation of developer &c. in an axial direction, and (2) to grip the blank edges of the film to maintain the coil flat. The spacing-band may be formed. from a non-sensitized film-strip.
Patent GB-1222074-A (GB)
Title: Electrophotographic reproduction material
Inventor: TELLIER JACQUES CAREL TRISTAN
IPC: C07D209/24
Filed: 1967-04-26
Abstract: 1,222,074. Photoconductive composition. GENERAL ANILINE & FILM CORP. 2 April, 1968 [26 April, 1967 (2)], Nos. 19166/67 and 19167/67. Heading HIK. A photoconductive composition comprises a resin and a photoconductor of formula where A is a pyrrole, indole or phenyl nucleus, which may be substituted by an alkyl group having 1 to 5 C atoms. The tricyanovinyl group occupies position 2 if A is a pyrrole group or position 3 if A is an indole group. The phenyl nucleus may be substituted at position 4 by a hydroxyl group or a substituted or unsubstituted amino group. The specific embodiments exemplify the use of 3-(tricyanovinyl) indole, 4- tricyanovinyl - 2,6 - dimethyl phenol, 2 - tricyanovinyl - N - butyl pyrrole, 4 - tricyanovinyl N,N - diethyl aniline, 3 - (tricyanovinyl). N - ethyl indole, 4 - tricyanovinyl N,N - dimethyl aniline and tricyanovinyl pyrrole. The resin is preferably polymerized natural resin, maleinate resin, hydrogenated rosin but many others are specified. The composition may also contain Rhodamine-B, Methylene blue, Crystal violet, and chloranil as sensitizers. The composition may be coated on to a support of Al, Zn, Cu, paper, regenerated cellulose or Nesa glass to form an electrophotographic element. Other support materials are specified including paper coated with PVA, methyl cellulose, polyamides, or copoly acrylonitrile and acrylic acid methyl ester.
Patent GB-295499-A (GB)
Title: Improvements relating to display stands
IPC: A47F5/00
Filed: 1927-07-21
Abstract: 295,499. Fellows & Darby, Ltd., Fellows, J. S., and Darby, B. G. July 21, 1927. Pedestal stands. - A display stand is built up of three or more legs 1 detachably connected together at two points by being attached by screws 6 to junction pieces 5. The legs may be provided with flat surfaces which abut flat surfaces on the junction pieces 5. The upper and lower ends of the legs are bent outwardly as shown and provided with rubber terminals 4. According to the Provisional Specification the legs are screw threaded to receive the rubber terminals, and only two legs may be employed.
Patent GB-150164-A (GB)
Title: Improvements in or relating to means for reducing the suction between the music sheet and the tracker bar in mechanical piano players
Filed: 1919-08-06
Abstract: 150,164. Burrus, E. J. Aug. 6, 1919. Actions, pneumatic. In order to reduce the suction between the tune sheet and the trackerbar, the usual bleed-hole is dispensed with and a vent is provided between the valve box and the tracker duct, which is closed when the tracker aperture is closed by an unperforated portion of the tune-sheet. In the form shown in Fig. 1, the purse b has a vent aperture a, as also has a disk g secured to the upper side of the purse. In the normal position shown, the purse rests against a leather disk j attached to the purse rail d, thereby closing communication between the valve box e and the tracker duct f. The base m of the valve has a felt face n through which and the vent a communication is established between the tracker duct f and valve box e is established in the raised position of the purse. In a modification, Fig. 3, the disk is attached to the purse b, which is not perforated. In the raised position of the purse, communication is established between the valvebox e and the tracker duct f through a vent aperture s. Alternatively the disk j may control the vent passage r.
Patent GB-791739-A (GB)
Title: Heterocyclic phosphorus-containing halides and their production
IPC: C07F9/6574
Filed: 1955-07-06
Abstract: The invention comprises heterocyclic phosphorus-containing halides having the formula: <FORM:0791739/IV (b)/1> in which each R is an alkyl group or a hydrogen atom, R1 is an alkyl group, Hal is a halogen atom and n or 0 or 1.  The novel compounds may be prepared by reacting a phosphoryl halide with a 2-(1-hydroxyalkyl)-cyclohexanol or 2-(1-hydroxyalkyl) cyclopentanol or alkyl ring-substituted derivative thereof, preferably in the presence of an inert volatile organic solvent for the reactants, e.g. ethyl ether, and a hydrogen halide sequestering agent, such as the tertiary amines, pyridine, N : N-dimethylaniline, trimethylamine, or tributylamine.  The reaction may be effected at temperatures of -20 DEG  to + 60 DEG  C., preferably 0 DEG  to 25 DEG  C., and at an absolute pressure of not more than 500 mm. Hg.  The crude products may be purified by crystallization or by distillation under high vacuum, preferably using a falling-film type still.  A list of suitable starting materials is given.  In an example, phosphoryl chloride is reacted with 2-(1-hydroxyethyl) cyclohexanol to give P - chloro .2:4 - dioxa - 5 - methyl - P - oxo - 3 - phosphabicyclo - [4.4.0] decane.  By using 2-(1-hydroxyethyl) cyclopentanol, the product is P - chloro - 2:4 - dioxa - 5 - methyl-P - oxo - 3 - phosphabicyclo [4.3.0] nonane. The novel products are useful as pesticides and may also be reacted with monohydric and polyhydric alcohols, phenols, thiophenols, mercaptans, the alkali metal salts of these compounds, amines, ammonia and epoxides, to produce compounds suitable as plasticizers, pesticides, lubricants, oil and gasoline additives, surface-active agents and textile assistants.
Patent GB-877776-A (GB)
Title: Improvements in or relating to electric heating elements
Inventor: SEVERS MICHAEL JOHN
IPC: H05B3/00
Filed: 1959-06-08
Abstract: 877,776. Electric heating resistances. GENERAL ELECTRIC CO. Ltd. June 8, 1960 [June 8, 1959], No. 19512/59. Class 39(3). In an electric heating element comprising a cylindrical heat-resisting sheet-metal member, e.g. of tantalum, having longitudinal slots 5 extending from its ends, strengthening flanges 8 are provided along slot edges by metal displaced to form the slots. The element shown is designed for use in a vacuum furnace and may be connected to a three-phase supply by three supports each comprising two bar members 17 and 18 separated at their ends to form parallel parts which can be clamped to watercooled feeders (not shown). An aperture 20 is provided in each support to form a heat barrier. The metal at the ends of the cylinder is bent outwardly to form flanges 12 and 13.
Patent GB-573609-A (GB)
Title: Improvements in controls for cycle brakes or the like
IPC: B62L3/02
Filed: 1943-11-24
Abstract: 573,609. Twist grip controls. PORTER, S. Nov. 24, 1943, No. 19594. [Class 136 (i)] A cycle handlebar twist-grip control for brakes &c. comprises a rod 1 fixed inside the end of the handlebar 3 with a projecting portion having a multi-start screw-thread 2 thereon engaged by an internal screw-thread on a hand grip 5 extending over the handlebar, the inner member 9 of the Bowden cable being anchored at 10 to the hand grip and the outer member 12 being fixed to. the rod 1, the hand grip being returned to its original position after actuation of the brake &c. by a spring 18a. The rod 1 is pinned to the handlebar and has a threestart thread, and the tube 5 slides on a sleeve 7 fixed to the handlebar. The inner member of the Bowden cable passes through a central bore of the rod 1 and is anchored in a disc 11 fixed to the outer end of the tube 5. The brake rod 17 is connected to a plunger 16 in a casing 13 fixed to the steering column, operated by the Bowden cable against the spring 18a, which returns the brake and the twist grip to the off position. The brake is adjusted for wear by a nut 18.
Patent GB-256646-A (GB)
Title: Process for the production of luminescent pictures or characters
IPC: B44F1/00
Filed: 1926-08-09
Abstract: 256,646. Eigner, H. Aug. 7, 1925, [Convention date]. Signs.-Luminous pictures or characters in several colours are produced by printing the design in a ground colour, such as lithographic ink, and coating the printed surface with dry luminous colour in powdered form. The operation is repeated with each colour, which is to be applied, and the finished design is coated with a binding medium, such as lacquer or varnish. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a method of producing pictures, adapted to be viewed by daylight as well as in the dark, in which ground colours of approximately the same shade as the luminous colours are employed. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1494824-A (GB)
Title: Process for the production of 2-aryl-2h-benzotriazoles
IPC: C07D249/20
Filed: 1976-05-13
Abstract: 2-Aryl-2H-benzotriazoles of the formula I <IMAGE> are prepared by reducing a suitable o-nitroazobenzene with hydrogen in the form of a mixture in an aqueous alkaline/organic medium at pH greater than 10 in the presence of a noble-metal hydrogenation catalyst, or an oxide, of Group VIII of the Periodic Table at 20 to 100 DEG C thereof at a pressure of 1 to 66 atmospheres, and cyclising the product. The meanings of the symbols are given in Claim 1. The compounds can be used as UV stabilisers. The process is environmentally friendly and gives high yields.
Patent GB-1497369-A (GB)
Title: Current supply system
IPC: H02H7/122
Filed: 1976-05-13
Abstract: 1497369 Standby systems including converters SIEMENS AG 13 May 1976 [5 June 1975] 19841/76 Headings H2H and H2F A "no break" type of power supply system comprises a rectifier 2 connected to an A.C. source 1, the output of the rectifier 2 being connected to the input of an inverter 7, to which input is also connected a battery 4, the output of the inverter 7 being connected to a distribution system 10 by way of a filter unit 8, characterized by an auxiliary rectifier 23 connected between the output of the inverter 7 and the battery 4. Thus the supply to the system 10 is maintained by the battery 4 upon malfunction of the A.C. source 1 and the rectifier 23 serves to return to the battery 4 excess energy should the voltage at the output of the inverter 7 exceed a predetermined maximum value. The output voltage of the inverter 7 is sensed by a transformer 15, rectified by a rectifier 16 and compared in a unit 18 with a desired value signal 19 to control the output voltage by way of a variable gain amplifier 20 and a control unit 22. The signal from the rectifier 16 is also used to control the auxiliary rectifier 23 in such a manner that the energy fed back from the output of the inverter 7 to the battery 4 is low with normal output voltage from the inverter but is increased when the inverter output voltage is excessive. In a further embodiment a first bidirectional switch is interposed between the inverter 7 and the distribution system 10 together with a second bidirectional switch connected directly between the A.C. source 1 and the distribution system 10. The inverter 7 is monitored such that a changeover unit causes the first bidirectional switch to connect the inverter to the distribution system but should the inverter develop a fault the second bidirectional switch is rendered conductive to connect the distribution system directly to the A.C. source. Furthermore the control circuit for the auxiliary rectifier 23 may include logic devices controlled by comparisons between the inverter output voltage and the A.C. source voltage. A device for synchronizing the inverter output voltage and the A.C. source voltage, both in frequency and phase, may also be incorporated in the system.