baber/WOPTO huggingface dataset:
Patent GB-958369-A (GB)
Title: Production of phthalic acid esters and of polyesters
IPC: C08G63/181
Filed: 1960-08-31
Abstract: Hydroxy esters are produced by the non-catalytic reaction of terephthalic acid (or a mixture thereof with up to 35% isophthalic acid) containing less than 0.1% wt. carboxybenzaldehyde with a C2-10 diol (2-12 mols.) at above the normal boiling-point of the diol in absence of oxygen in a closed system at a superatmospheric pressure to maintain a liquid phase at least of the diol, without removing by-product water until at least 50% of the carboxyl groups of the phthalic acid are converted to hydroxy ester groups and thus obtaining a clear reaction product, which may be cooled to form a white waxy crystaline solid.  In examples the diol is ethylene glycol.  Other diols mentioned are tri-, tetra-, penta, hexa-, hepta-, octa-, mona- and decamethylene glycols; 1,4-dihydroxycyclohexane, 1,4-di(hydroxymethyl)cyclohexane and 1,4-di(hydroxymethyl)benzene Specifications 578,079 and 777,628 are referred to.ALSO:Polyesters are formed by polycondensation of hydroxy esters produced by the ion-catalytic reaction of terephthalic acid (or a mixture thereof with up to 35% isophthalic acid) containing less than 0.1% wt. carboxybenzaldehyde with a C2- 10 diol (2-12 moles) at above the normal boiling point of the diol in absence of oxygen in a closed system at a superatmospheric pressure to maintain a liquid phase at least of the diol, without removing by product water until at least 50% of the carboxyl groups of the phthalic acid are converted to hydroxyester groups and thus obtaining a clear reaction product, which may or may not be first cooled to form a white waxy crystalline solid.  The process may be effected continuously.  Examples are given of polycondensation of hydroxy esters prepared as above, the diol being ethylene glycol.  Other diols mentioned are tri-, tetra-, penta-, hexa-, hepta-, octa-, nona- and deca-methylene glycols; 1, 4-dihydroxycyclohexane, 1, 4-di(hydroxymethyl) cyclohexane and 1, 4-di (hydroxymethyl) benzene. Specifications 578,079 and 777,628 are referred to.
Patent GB-1106048-A (GB)
Title: Disazo dyes containing a heterocyclic residue and free from sulphonic acid groups
Inventor: DEHNERT JOHANNES
IPC: C09B31/02
Filed: 1965-07-15
Abstract: The invention comprises disazo dyes derived from 3- or 4-aminonaphthalimides and free from SO3H groups, of the formula <FORM:1106048/C4-C5/1> wherein R is a (C1-C8) aliphatic radical which may be substituted, A is a benzene or naphthalene residue and B is a radical of a coupling component, preferably of the benzene series. They may be obtained by coupling diazo derivatives of 3- or 4-aminophthalimide whose N atom bears an aliphatic radical as substituent with coupling components of the benzene or naphthalene series containing a diazotizable amino group, and converting the monoazo dyes into disazo dyes by diazotization and coupling.  The aliphatic radical R may bear hydroxy, alkoxy or amino groups as substituents.  Examples are given for the production of the dyes. They may be used for dyeing or printing textile materials derived from cellulose esters, cellulose ethers, polyacrylonitrile, copolymers of acrylonitrile, linear polyamides, polyurethanes or polyesters yellow, orange, red brown or red shades.
Patent GB-300736-A (GB)
Abstract: 300,736. Vethe, A. E. Sept. 12, 1927. Adding and subtracting apparatus. -A stylus-operated instrument of the differentially-set disc type is provided with transfer mechanism of particular construction and arrangement. The numeral-bearing discs 11 are each secured, together with a gear wheel 20, on a hub 15 rotatable on a stud 16. The cover plate 8 is marked inside and outside the circular slot 41 with the digits 0-9 running in opposite directions to facilitate subtraction as well as addition. The discs are justified by springs 36. Transfer-mechanism.-Each gear wheel 20 has a transfer tooth 32 in a plane different from that of the teeth and at transfer this tooth engages and turns a pinion 26 mounted on a stud 31 end adapted when rotated to actuate the next higher wheel. The gear wheels and pinions are alternately reversely arranged in the series as seen in Fig. 2. The pinions normally are clear of the higher gear wheels, and are held by leaf springs 35. Zeroizing-mechanism.-Fast with each numeral disc is a mutilated gear 50 coplanar with a mutilated rack 46 slidable lengthwise for restoring the discs to zero.
Patent GB-1205459-A (GB)
Title: Improvements in beakers
IPC: A47G19/22
Filed: 1968-06-24
Abstract: 1,205,459. Drinking vessels. MELAWARE Ltd. and R. A. MANOY. 28 April, 1969 [24 June, 1968], No. 30094/68. Heading A4A. A drinking vessel comprises a container portion which is joined to a base by an off-centre stem portion, so that it may be lifted and supported by the palm of the hand engaging under the container portion. The container portion may be provided with a lining.
Patent GB-1464753-A (GB)
Title: Card reader
IPC: G06K7/015
Filed: 1974-07-08
Abstract: 1464753 Card reader AMP Inc 8 July 1974 [6 Aug 1973] 30102/74 Heading G4M A reader for a card 104 having a magnetic strip 102 has a slot receiving the card and a read head 100 mounted in an aperture 88 in a top portion 1 of the reader. The base portion 2 of the reader contains a recess receiving the card and a channel entering the recess and receiving a transport device containing a head unit 22 coupled by a rod 24 to a piston slidable in a cylinder 28 situated in a cylindrical opening formed in the base and top portions of the reader. A further recess 58 in the base portion contains rollers 66, 68 situated below the read head and urged upward by a spring (Fig. 4 not shown). The force applied by the spring is adjustable by a set screw. The head unit 22 has an extension portion 84 received in and guided by a slot in the lower surface of the top portion 1 and is coupled to a spring situated in an opening in the base portion 2. The spring is spirally wound on a core and is unwound as the card is pushed into the reader. An end 36 of the cylinder 28 has an adjustable opening allowing the piston and cylinder to act as a dashpot controlling the speed of ejection of the card as the spring winds on the core. The card is read during ejection. The position of the read head is adjustable.
Patent GB-396372-A (GB)
Title: Improvements in and relating to methods of converting direct into alternating current
IPC: H02M5/447
Filed: 1931-10-31
Abstract: 396,372. Converting. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees. of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Oct. 31, 1931, No. 30207. Convention date, Oct.. 31, 1930. Void [Published under Sect. 91 of the Acts].. [Class 38 (ii).] Alternating current from a source 1 is supplied through a transformer 3 and a pair of valves 4, 5 arranged to produce full-wave rectification, the resulting D.C. output being supplied through grid-controlled valves 7, 8 to the two halves of a centre-tapped winding forming the stator winding on an induction motor or forming the energizing winding of an induction heater or furnace. The valves 7, 8 together with the condenser 9 and: inductance 6 constitute a parallel-type invertersystem identical with the known arrangement. Fig. 1 (not shown), except that the usual output transformer is omitted. The arrangement may be modified to produce polyphase A.C.
Patent GB-933531-A (GB)
Title: Production of n-brominated organic compounds
IPC: C07D209/48
Filed: 1960-09-01
Abstract: N-brominated cyanuric acid is prepared by treating cyanuric acid with bromine in an aqueous alkaline solution, and, before, during or after this treatment, introducing chlorine, an alkali hypochlorite, or N-chlorocyanuric acid.  An example treats cyanuric acid in aqueous NaOH solution with bromine and then with chlorine.ALSO:An N-brominated organic compound is prepared by treating a compound selected from cyclic imides of aliphatic or benzene dicarboxylic acids, saturated aliphatic amides, hydantoins, benzene sulphonamides, melamine and cyanuric acid with bromine in an aqueous alkaline solution and, before, during or after this treatment, introducing chlorine, an alkali hypochlorite, or the corresponding N-chloro organic compound.  Examples prepare (1)-(4) N-bromosuccinimide, (5) N-bromophthalimide, (6), (7) N-bromoacetamide, (8) 1,3-dibromo-5-ethyl-5-methylhydantoin, (9)-(11) 1,3-dibromo-5,5-dimethylhydantoin, (12) monobromo-5,5-dimethylhydantoin, (13) N,N-dibromobenzenesulphonamide, (14) N-brominated cyanuric acid, (15) tribromomelamine, and (16) hexabromomelamine.
Patent GB-1392587-A (GB)
Title: Immonium salts
IPC: C07D295/14
Filed: 1973-06-26
Abstract: 1392587 Immonium halides ROUSSEL UCLAF 26 June 1973 [28 June 1972] 30279/73 Heading C2C Novel immonium halides of the general formula wherein each of R 1  and R 2  is an alkyl, phenyl, halophenyl or benzyl group or R 1  and R 2  together form an alkylene group or a group of the formula -(CH 2 ) 2 O(CH 2 ) 2 - or in which R 5  is a C 1-5  alkyl group, each of R 3  and R 4  is a hydrogen atom or a C 1-5  alkyl or phenyl group, or R 3  and R 4  together form a C 3-5  alkylene or C 7-10  benzoalkylene group, X is a halogen atom and Y is a di-C 1-5  alkyl-amino, morpholino, piperidino or pyrrolidino group, are prepared by reacting compounds of the general formulµ They may be characterized by conversion to the corresponding #-oxo-amides by hydrolysis. They may also be reacted (a) with a hydrazine of the general formula R 7 NHNH 2 , wherein R 7  is a hydrogen atom or a C 1-5  alkyl or phenyl group, or a salt thereof to give pyrazoles of the general formulµ  which are optionally separated when R 7  is other than a hydrogen atom, or (b) with an amidine of the general formula H 2 N-C(R 6 )=NH, wherein R 6  is a hydrogen atom or a C 1-5  alkyl or C 6-10  aryl group, to give a pyrimidine of the general formula
Patent GB-204233-A (GB)
Title: Improvements in and relating to fires, fireplaces, stoves, ranges and the like
IPC: F24B1/195
Filed: 1922-11-06
Abstract: 204,233. Hammond, C. T. S. Nov. 6, 1922. Grates; open fire-places.-In stoves, ranges, and' the like, of the type arranged in pairs facing intoadjacent rooms and having a door between the fire-place so that they may be either separated orput into communication, the fire-places are pro. vided with runners or guides on which a firebasket or grate may be moved from one to the other when the door is open. In the construction shown, the fire-places 9, 10 are provided with a central door 20 which slides on T-irons 23, 25, and when closed fits in a recess 26 in the side 13 of the fire-space, of which it forms the back. It is moved by a rod 27, or two rods may be provided by which it may be operated from either room. The fuel container 32 is provided with claw guides 33 which engage pairs of runners or rails 30, 31 enabling the container to be pushed from one fire-place to the other. The gap between the pairs of runners is bridged by the guides 33 during the movement of the container, and is filled by the door 20 when the latter is closed. In the modification shown in Fig. 4 the door which is hollow and of metal, is provided with a projection 35 at one side which, when the door is open, bridges the gap between the runners 36. The runner 38 on the other side is continuous and at a lower level. In another modification, sliding bolts may be moved to bridge the gaps by means of yoke pieces having projecting parts engaging the front of the container, which is thus moved together with the bolts. The door may move vertically or in other directions, and the fuel container may be carried on wheels or rollers.
Patent GB-1041205-A (GB)
Title: Regeneration process for absorbent beds
IPC: B01J20/34
Filed: 1963-07-31
Abstract: Previously desorbed zeolitic adsorbents, particularly both natural and synthetic zeolitic molecular sieves of 4-20 <\>rA pore size, are regenerated without burning by treatment at 600-1000 DEG  F. for at least one hour, preferably 2-12 hours, preferably at 1-50 p.s.i.a., with a regenerative agent <FORM:1041205/C1/1> wherein R1, R2, R3 = H and/or C1-C5 alkyl, ammonia being preferred.  The adsorbent may be operated in short cycles of alternate adsorption and desorption, preferably at a temperature below 800 DEG  F. to minimize coking, until the sieve capacity falls below a certain level, e.g. 75%, whereupon regeneration is effected to remove highly adsorbed material not desorbed in the conventional desorption cycle. Up to 10% by weight of the desorbent or displacing agent may still be retained by the sieve when regeneration is commenced; the desorbent may be SO2, H2S, C1-C5 alcohols, glycols halogenated or nitrated hydrocarbons, or an NR1R2R3 compound identical with the regenerative agent, especially ammonia.  Regeneration is carried out at a temperature 100-400 DEG F. above the normal desorption temperature. In an example, 5A molecular sieves are used to recover n-paraffins from a C9-C18 virgin crude oil distillate in alternate adsorption and desorption phases of 20 minutes duration at 570 DEG  F., 630 DEG  F. respectively, until a loss of 36% sieve capacity is recorded, desorption being effected with ammonia; regeneration is then effected with ammonia at 790-800 DEG  F. for 2 hours thus restoring 88% of the original sieve capacity.
Patent GB-433914-A (GB)
Title: Improvements in and relating to electric gas-blast switches
IPC: H01H33/02
Filed: 1934-10-23
Abstract: 433,914. High - tension switches. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Oct. 23, 1934, No. 30382. Convention date, Oct. 23, 1933. [Class 38 (v)] Pneumatic actuation.-In order to reduce .the overall height of an h.t. gas-blast switch in which the switch chamber 3 and contacts 2 are carried on a bushing insulator 5 directly mounted on a compressed-gas container 1, the length of the bushing 5 is reduced to a minimum consistent with the voltage employed by arranging that the parts of the apparatus contained therewithin project into the container 1. The movable contact 8, which carries a rack engaging a pinion 10 for simultaneous operation of all phases, is operated by a piston 25 in a cylinder 9 to which gas is admitted from 1. In the opening direction, opening of a valve 11 admits gas by way of a distribution pipe 12, pipe 13, and a port in the rod 8, an arrangement which ensures availability of a blow-out blast within the insulating tube 14 when the switch is opened. In closing, a valve 15 is opened to admit gas by way of pipes 26, 27 and the space between cylinders 21, 9, to the lower end of cylinder 9. The issuing blast is cooled and silenced by being led through one or more metal rings at 16. The cylinder 9 is in electrical connection with contact 8 by means of a sliding contact 7, and a terminal 23 is connected at 22 to a surrounding cylinder 21, the cylinders 9, 21 serving as connections to a current transformer 17 in a steel vessel 18 welded into 1. The cylinder 9 and transformer are surrounded by paper insulation and the space within the vessel 18 and an insulator 19 is filled with oil or compressed gas for increasing the insulation. The gas can be taken from 1 through a reducing valve so that it can be dried by expansion, and the pipe, as 13, for supplying the contacts may be located in insulator 5.
Patent GB-507239-A (GB)
Title: Improvements in or relating to the transmission or reception of electrical signals
IPC: H04N5/18
Filed: 1937-11-06
Abstract: 507,239. Television. BLUMLEIN, A. b., and WHITE, E. L. C. Nov. 6, 1937, No. 30464. [Classes 40 (iii) and 40 (v)] The black level b, Fig. 3, of a television or like signal is stabilized. The signal is applied at 1, Fig. 1, to a cathode follower valve 6 feeding the grid 11 of an amplifier over condenser 10 and grid leak 12. The anode circuit of valve 6 includes a delay network 26, 27 which applies a delayed signal to the grid 21 of a valve 19 which is biassed so that only the synchronizing or check signals a, Fig. 3, render the valve conducting. Thus, valve 19 is capable of conducting over the period c, Fig. 3, and its bias is brought to a standard level by grid current produced by the synchronizing signals applied to its grid. During the period c, the synchronizing signal a is applied over condenser 10 to the anode 24 of valve 19 to drive it negative while the anode goes positive when the black level b is applied. The valve 19 thus conducts during the period b and condenser 10 is charged to a constant level. The valve 19 is inoperative during the application of picture signals to its anode, as only the delayed synchronizing signals produce a bias allowing it to conduct. In a modification, the signals are delayed for a longer period so that valve 19 is conductive for the period b together with a period following, and the valve 19 is fed from valve 6 to its cathode instead of to its anode, Fig. 4 (not shown). Automatic gain control potentials may be derived by applying the signal at 30, Fig. 2, over a cathode follower valve. 34 to one grid of valve 45 and applying the delayed signal from delay network 35 to another grid of valve 45 so that valve 45 is conductive only during the black level b. The output of valve 45 is rectified at 50 to provide a control potential at 57 which is applied to valves in the amplifier preceding valve 34 to maintain the black level at 58 constant. A positive bias on the cathode of rectifier 51 prevents the diode 50 operating when the signals are too small to give a required black level. Specifications 422,906, 449,242, 458,585, and 497,637 are referred to.
Patent GB-226028-A (GB)
Title: Shaft couplings
IPC: F16D3/82
Filed: 1923-12-04
Abstract: 226,028. Simms, F. R. Dec. 4, 1923. Universal joints. - In flexible shaft couplings for motor vehicles &c., of the kind employing a tubular cushioning - device, lugs formed integrally with the tube are secured to the driving or driven member or to both. An inflated tube 3, Fig. 1, frictionally held like a beaded pneumatic tvre in the driven member 4, is clamped by its radial flange 3a between a flange 2 of the driving-member 1 and a ring or plates 5. As shown in Fig. 3, cylindrical extensions 3b of the tube 3 are clamped between arcuate plates 5 and the flanges 1<a>, 4a of the driving and driven members 1, 4 respectively. The extensions 3b are strengthened by the canvas &c. 3c moulded in the tube. In a modification, a beaded tube of the kind shown in Fig. 1 is employed and a floating rim is provided therefor. In another form, Fig. 4, the extensions 3b are dovetailed and held by friction only. Specification 6752/97 is referred to.
Patent GB-648748-A (GB)
Title: Improvements in and relating to insulators
IPC: H01B17/00
Filed: 1946-10-14
Abstract: 648,748. Lightning arresters. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 14, 1946, No. 30553. Convention date, Oct. 15, 1945. [Class 38 (iv)] [Also in Group XXXVI] A lightning arrester comprises a plurality of ceramic discs 37 inserted into one end of an insulating tube 3b, the opposing faces of the discs having a conductive coating 38 and the innermost disc having a metallic conductor 40 connected thereto. A metallic end cap 12b carries a conductor 41 and is provided with a hole 36. Lightning flashover connects the conductors 40 and 41 but the power arc is blocked and prevented from continuing along the path of the flashover. In an alternative arrester a fibre tube is housed within the insulating tube 3b. Within the fibre tube is a conductor connected to cap 25a. The cap 12a is provided with an opening 36 as before.
Patent GB-447018-A (GB)
Title: Apparatus for unrolling bundles of metal strip and the like
IPC: B21C47/22
Filed: 1935-11-05
Abstract: 447,018. Unwinding metal strip. SCHLOEMANN AKT.-GES., 13, Steinstrasse, D³sseldorf, Germany. Nov. 5, 1935, No. 30610. Convention date, Nov. 23, 1934. [Class 83 (iv)] In a machine for unwinding metal strip, a reel B is released by a detent 11 and is lifted by a cradle 17, operated by hydraulic cylinder 15, upon rollers 16. Internal supporting rolls 20 are swung by hydraulic cylinders to allow the reel to be positioned. A stripper S guides the strip to straightening rolls 19. Two of the rolls 16 are driven by frictional engagement with the rolls 19.
Patent GB-244110-A (GB)
Title: Process for manufacturing kettle-shaped hollow bodies by pressing from plane sheet-metal plates
IPC: B21D22/28
Filed: 1925-12-03
Abstract: 244,110. Krupp Akt.-Ges., F. Dec. 5, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Cupping.-Plates of large diameter and substantial thickness are cupped, while hot, between dies B, C which differ in diameter by an amount considerably greater than double the thickness of the blank, and the cup is then drawn between dies to render the thickness of the metal uniform throughout. The cupping may be performed in stages in successive dies.
Patent GB-837376-A (GB)
Title: Improvements in or relating to manually operable chucks
IPC: B23B31/16
Filed: 1958-09-25
Abstract: 837,376. Chucks. REISHAUER-WERKZEUGE A.G. Sept. 25, 1958 [Sept. 25, 1957], No. 30666/58. Class 83 (3). A manually-operable chuck with radial jaws 29 operated by a screw-spindle 5 and a nut 15, comprises rack-teeth on nut 15 to mesh with a ring-gear 16 rigidly connected to a further ring- gear 17 which meshes with three toothed racks 19 having oblique teeth 22 to operate the jaws. Axial movement of spindle 5 is prevented by a collar 7 and an adjustable end-bearing 9 in screw-threads in the chuck-body 1, and locked by a screw 11. A lock-nut 8 on bearing 9 is secured by a screw 14 engaging one of the slots 12 in the nut. Rings 16, 17, are preferably integral with each other, and bear on a synthetic resin sleeve 1b on the hub 1a of body 1, the sleeve preferably including molybdenumdisulphide. Racks 19 engage teeth 28 in the jaw-carriers 21, and spring-pressed pins 26 engaging the tooth-spaces in the carriers, prevent their escape from guide-passages 2 in the chuck when they coincide with untoothed parts 30 of the racks. A spring-pressed pin 37 (Fig. 3, not shown), engaging a slot in one of the racks 19, is projected out of its housing in the chuck by the sloping ends of the slot, thus giving an indication when the carriers are at the ends of their permissible clamping-range. The jaws may grip internal or external surfaces, and have ribs 33 and slots 32a engaging the carriers, which are guided by separate or integral ribs 24 in passages 2. Bolts 4 secure the chuck to the spindle-nose, and further bolts fix a plate 13 to the back of the chuck. The jaws may be reversed, and should be pre-stressed during machining of the clamping-surface. Circular grooves on the front of the chuck facilitate adjustment.
Patent GB-1198937-A (GB)
Title: Improvements relating to Collapsible Steering Colums for Motor Vehicles
IPC: B62D1/19
Filed: 1968-06-27
Abstract: 1,198,937. Collapsible steering columns. DAIMLER-BENZ A.G. 27 June, 1968 [5 July, 1967], No. 30706/68. Heading B7H. A collapsible steering column comprises a jacket tube 4 connected to the front bulkhead 11 of a motor vehicle by a deformable member 10, and a steering shaft formed by a shaft part 7 and a tubular part 8 which are axially slidable one within the other and are positively connected in the radial direction. A first enlarged portion 12 of the shaft part 7 is connected by splines to a reduced portion 13 of the tubular portion 8, and a second enlarged portion 15 is located by an insert 16 in the tubular part. The shaft part 7 projects through the bulkhead 11 and a transverse member 19 thereon for connection by a coupling 5 to steering gear 6. A steering wheel 1 is connected to a hub 3 on the tubular part 8 by a second deformable member 2. Each deformable member 10, 2 has a stepped cupped shape. Respective flanges 17, 20 on the deformable member 10 and steering gear 6 are attached to the bulkhead by separate series of bolts 21. In another embodiment, the steering gear and the deformable member are attached by common bolts to a box-section member extending across the bulkhead.