baber/WOPTO huggingface dataset:
Patent GB-741507-A (GB)
Title: Improvements in or relating to hydroperoxidation of cumene
IPC: C07C409/10
Filed: 1953-06-23
Abstract: Cumene hydroperoxide is made by oxidizing cumene in the liquid phase in the presence of a tetra-alkyl ammonium hydroxide in which the alkyl groups contain not more than five carbon atoms and preferably not more than three carbon atoms.  Preferably the reaction is carried out at 100-120 DEG  C., e.g. at 110 DEG  C., using 0.15-5 parts and more preferably 0.5-3.5 parts of catalyst per 100 parts of cumene. The oxidation may conveniently be started by the action of an initiator which may be tert.-butyl perbenzoate, benzoyl peroxide, 2:2-bis-tert.-butyl-peroxy-butane, or cumene hydroperoxide itself. The reaction may be carried out in a homogeneous liquid phase or in an emulsion.  Either pure oxygen or air may be used as the oxidizing gas.  Examples are given in which the catalysts specified are tetramethyl ammonium hydroxide, tetraethyl ammonium hydroxide, butyl propyl dimethyl ammonium hydroxide, tetrapropyl ammonium hydroxide and dibutyl diethyl ammonium hydroxide.  Specification 681,990 is referred to.
Patent GB-1117076-A (GB)
Title: Improvement in suction head devices for lifting and displacing plastic fibrocement slabs and for forming corrugations therein
Inventor: PASQUALE CAMILLO
IPC: B28B1/52
Filed: 1967-04-17
Abstract: 1,117,076. Suction lifting devices. C. PASQUALE and A. C. PASQUALE [trading as R. C. M. REVISIONE COSTRUZIONE MACCHINE]. 17 April, 1967 [15 April, 1966], No. 17460/67. Heading B8H. [Also in Division B5] A suction head device for lifting and displacing plastic fibrocement slabs 7 and for forming corrugations therein of the type in which supporting elements 1, 2 for a web 3 having a permeable suction face 5 are adapted to be drawn together for corrugating the face 5 and the slab 7 held thereto by suction is characterized by comprising two sets of tubular supporting elements, namely bottom and top elements 1, 2, respectively, connected two by two by standards 10, a plurality of links 13, 14 forming an extensible pantograph interconnection between the standards 10. Swing levers 21 and fluid pressure cylinders 23 mutually displace the standards 10 from a maximum (full line) to a minimum (dashed line) position 10, 10a, respectively, limited by stops formed by abutments 24, 25. The web 3 comprises a top and a bottom portion 3a, 3b, respectively, of yieldable material stretched over the sets of supporting elements 1, 2 in order to define a suction chamber 4 and has a sliding clasp fastner 28 tight enough to prevent appreciable pressure loss by the suction fluid within the chamber 4.
Patent GB-532113-A (GB)
Title: Improvements in or relating to the dyeing of textile materials comprising cellulose derivatives
IPC: D06P5/22
Filed: 1939-06-16
Abstract: 532,113. Dyeing textiles; artificial silk. COURTAULDS, Ltd., and PAUL, H. June 16, 1939, No. 17653. [Classes 2 (ii), 2 (iii) and 15 (ii)] Textile materials made of or containing an aliphatic carboxylic acid ester of cellulose are coloured by incorporating therein a free aliphatic diamine containing less than 7 carbon atoms and thereafter, without substantial removal of the diamine, dyeing with an acid wool dyestuff. Specified diamines are ethylene diamine, 1:2- diaminopropane and hexamethylene diamine. The materials may be treated, before the dyeing operation, with a compound such as formaldehyde, carbon disulphide, or carbon oxysulphide, which forms an insoluble condensation product with the diamine. Heating to effect a complete condensation may be necessary. The use, as described in Specification 499,868, of acid dyestuffs containing one or more residues, such as halogen or a nitro group, capable of splitting off acid by reaction with amino groups in the material, is excluded. In examples, (1) hexamethylene diamine is incorporated in a solution of cellulose acetate in acetone, the solution is extruded into air at 60-65‹C., the resulting thread is exposed to formaldehyde vapour at room temperature and dyed with Azo geranine 2GS from a dilute sulphuric acid bath at 70‹C. (2) a hank of cellulose acetate yarn is padded in a cold aqueous solution of ethylenediamine, dried at 70‹ C., heated for 15 minutes at 120‹C. and dyed with Coomassie yellow RS or Elite F yellow 2GrS from a dilute acetic acid bath at 80‹C., (3) a hank of cellulose acetate yarn is padded and further treated as in (2) with an addition of formaldehyde to the padding solution ; the dyestuff may be replaced by Solway blue BHS, Azo geranine 2GS, Coomassie red SPG or Coomassie navy blue 2RNS.
Patent GB-452604-A (GB)
Title: Improvements in mowing machines
IPC: A01D34/14
Filed: 1935-06-20
Abstract: 452,604. Making mowing - machine knife bars. BAMFORD, J., St. Mary's Mount, and BAMFORD, C. J., The Parks, both in Uttoxeter, Staffordshire. June 20, 1935, No. 17684. [Class 83 (ii)] [See also Group I] The heel plate 5 and the head 1 for engaging the connecting-rod of a mowing-machine are made separately and the heel plate or the head is provided with a flange or socket for preventing rocking movement of the head in relation to the plate when the two are secured together. The head 1 is provided with a stem 2 upon which is a flange 3 ; the flange may be circular or may have the shape shown. A shank 4 projecting downwardly from the stem is adapted to fit into a hole in the heel plate, its lower end being riveted over to fill the countersunk lower end of the hole, the flange 3 bearing on a facing 7 on the heel plate. The flange is secured to the plate by welding or riveting or by both welding and riveting ; in particular, to prevent rocking, the flange is secured to the plate on the knife bar side and on the connecting-rod side. In a modification the head is formed with an integral shank terminating in a flange which is secured to the plate by welding. In a further modification the head has a plain shank which fits into a socket on the plate being then secured by welding.
Patent GB-1136317-A (GB)
Title: Process for the preparation of tropylium salts and substitution products derived therefrom
Inventor: BORG ARNE PIETER TER
IPC: C07C13/24
Filed: 1967-04-18
Abstract: 1,136,317. Tropylium salts. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 18 April, 1967, No. 17770/67. Heading C5E. Substituted or unsubstituted tropylium salts are prepared by autoxidation of substituted or unsubstituted oycloheptatriene (the methylene group carrying at most one substituent) by contact in an acid medium with oxygen or an oxygen-containing gas in the presence of a phenol. Numerous phenols are specified. The medium may be a solution of a strong acid in a weak acid. Fe ions may be present, preferably as FeCl 3 . Examples describe the preparation of tropylium perchlorate and tropylium tetrafluoroborate.
Patent GB-613259-A (GB)
Title: Machine for extracting juice from citrus fruit
IPC: A23N1/00
Filed: 1946-06-13
Abstract: 613,259. Juice extracting machines. KARP, Z., and KOFFLER, M. June 13, 1946, No. 17789. [Class 28(ii)] In a machine for extracting juice from citrus fruit, the fruit is carried in recesses 5, 5' in two oppositely rotatable drums 12 past a slicing knife 27' so that each half fruit is deposited on to conveyers 20, 21 ready for squeezing by heads 37, 37<1> which are reciprocated by spindles 33 and cams 38. The head 37' is deeper than the head 37 to ensure that the juice is fully extracted. In a modification (Fig. 3, not shown), the squeezing heads are carried on an endless belt inclined to the conveyer. Fig. 4 shows another alternative arrangement wherein the carriers for the fruit are replaced by endless belts 51 provided with cups 56 which are guided towards the conveyors 20 and thereby exert a squeezing action on the pieces of fruit. Specification 613,243 is referred to.
Patent GB-1209417-A (GB)
Title: Process and apparatus for washing permeable materials, particularly textile materials in open width
IPC: D06B3/20
Filed: 1969-04-08
Abstract: 1,209,417. Textile treating apparatus. VYZKUMNY USTAV ZUSLECHTOVACI. 8 April, 1969 [26 April, 1968], No. 17791/69. Addition to 1,058,954. Heading D1L. The method and apparatus of the Parent Specification, wherein a textile material T is passed upwardly and alternately over a series of horizontally pivoted rollers arranged in two vertically staggered columns 6 and 8 and wherein a washing liquid is applied to the rollers via pipes 11, 12, the washing liquid being carried by friction into the nip between the material and the roller, to be squeezed through the material and subsequently hurled off by centrifugal force, is modified in that wiping means 10 are provided which resiliently and adjustably contact each roller at a predetermined point and which serve to remove the film of washing liquid adhering to the material on the roller. The apparatus also includes liquid recapturing means 13 for control of liquid flow. As shown, the wipers 10 constitute rollers, but doctor blades may be used (Fig. 2). The means 13 constitute pivotable plates controlled by a common shaft 15. Liquid may thus either be collected from the wipers and returned to the roller system (solid line position) or may be deflected away from the rollers (dotted line position).
Patent GB-614916-A (GB)
Title: Improvements in or relating to the preparation of unsymmetrically substituted guanidines and acid salts thereof
IPC: C07C277/08
Filed: 1945-07-12
Abstract: Salts of substituted guanidines are prepared by reacting an aqueous solution of cyanamide with a mixture of a primary or secondary amine having a dissociation constant of at least 1 X 10-6 together with an acid salt of the amine at a temperature of from 80 DEG  to 170 DEG C., there being sufficient of the free amine present to raise the pH of the reaction mixture to 8 or higher.  The free guanidines may be obtained by neutralizing their salts with an alkaline substance. Primary amines yield monosubstituted guanidine compounds whilst secondary amines yield unsymmetrically di-substituted compounds.  At the higher temperatures the reaction is carried out under pressure. Preferably only a low concentration of cyanamide is maintained present during reaction; thus, an aqueous solution of cyanamide may be added to the reaction mixture progressively so that there is not more than about 0.25 mole. of unreacted cyanamide present per mole. of unreacted amine calculated as free amine and amine salt. Generally, the molar quantity of free amine present does not exceed that of the amine salt.  The process may be made continuous.  In examples: (1) an aqueous cyanamide solution is progressively run into an aqueous sulphuric acid solution containing excess methylamine (pH 10) at 170 DEG  C. in an autoclave to yield methyl guanidine sulphate; (2) a series of experiments are described illustrating the preparation of mono-methyl guanidine nitrate, mono-n-butyl guanidine nitrate and N,N-pentamethylene guanidine nitrate from methylamine-, butylamine- and piperidine-nitrate respectively in the absence and presence of excess of the amine at pH values from 2 upwards and the yields are compared; (3) di-n-butyl guanidine nitrate is prepared as in (1) from di-butylamine and its nitrate; (4) a series of experiments are carried out as in (1) using a mixture of methylamine and methyl ammonium methyl carbamate prepared by treating liquid methylamine with solid carbon dioxide; (5) butyl guanidine hydrochloride is prepared similarly, from butylamine and its salt, converted into the base and then, by means of carbon dioxide, into the bicarbonate; (6) octadecyl guanidine hydrochloride is prepared likewise from octadecylamine and its salt dissolved in aqueous butanol, and converted into the carbonate by means of sodium carbonate.  Other amines specified are dimethylamine, ethylamine, isoamylamine, benzylamine, phenylethylamine, N - ethyl - benzylamine, octylamine, laurylamine, stearylamine, morpholine, cyclohexylamine and monoethanolamine; the amines may be used in the form of their sulphates, nitrates, hydrochlorides, carbonates, carbamates, acetates, propionates, succinates and phthalates.  The Specification as open to inspection under Sect. 91 includes the use of any primary or secondary amine and is not limited as regards conditions of temperature and pH.  This subject-matter does not appear in the Specification as accepted.
Patent GB-403999-A (GB)
Title: Improvements in combined air compressor and engine units
IPC: F04B39/02
Filed: 1932-06-24
Abstract: 403,999. Regulating compression. WILSON, F. W., and TILGHMAN'S PATENT SAND BLAST CO., Ltd., Atlantic Street, Broadheath, near Manchester. June 24, 1932, No. 17862. [Class 8 (i).] An air compressor is provided with an unloading valve c which is operated when the pressure in the receiver reaches a predetermined maximum, The valve c is connected by a bell-crank d and rod e to a throttle in the induction pipe of the engine driving the compressor. In addition the engine is controlled in response to the lubricating oil pressure which is a function of the speed. The oil pipe is connected to a vessel and an air pocket is arranged in the pipe connecting the vessels j, m and the pressure acts upon a. spring loaded piston connected to a throttle f in the induction pipe. The vessels j, m may be replaced by a vessel as shown in Fig. 2 wherein a weir plate n separates the spaces m, o and an air space exists above the level of the oil. The valve c is so arranged that it opens after the throttle valve and also closes after the throttle valve.
Patent GB-517020-A (GB)
Title: Improvements in processes of preparing photographic reliefs for printing in colours
IPC: G03C7/25
Filed: 1938-06-16
Abstract: 517,020. Colour photography. KODAK, Ltd., and SELMAN, R. F. W. June 16, 1938, No. 17904. [Class 98 (ii)] In the production of colour prints from relief positives some at least of the positives are corrected for defective colouring by printing them from filter negatives in register with masking positives printed from the filter negatives, these maskings positives having images in silver or an opaque salt such as silver sulphide and being afterwards used as relief positives. In carrying out the process a picture is first printed from the red filter record and converted to a positive relief in silver. This is registered with the green filter record and a positive produced from the combination and converted to a positive relief in silver. The two reliefs are then registered with the blue filter negative and a third positive relief produced. The silver is removed from the three positive reliefs and the latter dyed up and either superimposed or used to print by imbibition on paper or a gelatin-coated kinematograph film. The positive from the red filter negative may have a density range of 0À4 times that of the green filter negative and the corrected positive from the green filter negative a density range of 0À5 times that of the blue filter negative.
Patent GB-1464769-A (GB)
Title: Automaitc exposure control systems and light metering systems for cameras
IPC: G01J1/44
Filed: 1974-04-24
Abstract: 1464769 Measuring light intensity NIPPON KOGAKU KK 24 April 1974 [25 April 1973] 17934/74 Heading G1A [Also in Division G2]  A light metering circuit comprises a photoelectric device 1 and a variable resistance 4a-d which together determine the value of a voltage V 1 , a counter 14 whose count determines the value of the resistance 4a-d and a control system 6-12 responsive to the value of V 1  for adjusting the count in the counter 14 to maintain VI at a predetermined value. The count thus indicates the intensity of light incident on the photo-electric device 1 and, as shown, is used to indicate and control camera shutter speed. In Fig. 1 a differential amplifier 7, 8 compares VI with a voltage V2 set according to film speed and diaphragm aperture and, via transistors 9, 10, AND gates 11, 12 and a pulse generator PG increases or decreases the count in counter 14 to switch appropriate resistors 4a-d into circuit in order to make V 1  equal to V 2 . The resistance of 4a = 2 x 4b = 4 x 4c = 8 x 4d. On shutter release, a switch 13 is opened to disconnect generator PG, and a switch 3 connects the selected resistors 4a-d to a capacitor C which on being charged trips a Schmitt trigger 19, 20 controlling a shutter closing electromagnet 21. Light emitting diodes in a device IND indicate shutter speed in Fig. 2 (not shown) the photo-conductor 1 is replaced by a photovoltaic cell (101) connected between the inputs of the differential amplifier 7, 8. The circuit may alternatively control diaphragm aperture.
Patent GB-859053-A (GB)
Title: Device for measuring the heat flow between adjacent parts of a building
IPC: G01K17/00
Filed: 1958-11-20
Abstract: 859,053. Measurement of heat flow. GRACOBINO, J. Nov. 20, 1958, No. 18014/57. Class 40 (1). A device for measuring and recording the heat flow from one adjacent flat to another comprises a temperature sensitive resistor placed in each flat and arranged to be connected in a bridge circuit at a central measuring station so that the occupant of the flat may be charged in accordance with the heat flow between his and adjacent flats. Fig. 2 represents four adjacent flats A, B, C and D. The heat flow between two flats is proportional to the temperature difference between them which is measured by a pair of temperature sensitive resistors such as R AS  and RB i  or R BS and R Ci  or R Cs  and R Di . Fig. 1 shows the bridge set to measure the heat flow between flat B and to neighbours A and C. Resistors R Bs  and R Bi  are in one arm while resistors R #s  and R #i  are in the other arm of a bridge together with a resistance R F  designed to account for the fixed charges payable by flat B. The output of the bridge is connected via an amplifier 3 to a corresponding meter C B  (Fig. 2). The measurement is made for a short period of time, say 60 seconds, and then an automatic switch, switches in another set of resistors and a meter corresponding to flat C and so on.
Patent GB-352679-A (GB)
Title: Improvements in liquid measuring and delivering apparatus
IPC: B67D7/16
Filed: 1930-06-12
Abstract: 352,679. Liquid meters. SOC. ANON DE MACHINES-OUTILS ET APPAREILS DIVERS LA SAMOA, 17, Rue de Brey, Paris. June 12, 1930, No. 18020. Convention date, June 14, 1929. [Class 69 (i).] In a liquid meter comprising two measuring vessels alternately filled and emptied, a member responsive to the pressure in the supply acts to - engage a clutch to connect the distributing valve to actuating means when a vessel is filled, and means are provided to stop the actuation when a predetermined quantity has been delivered. Ir one form, a disc L, Figs. 2 and 3, is keyed to the valve spindle and provided with spring-pressed members L<1> having pins L<3> the pistons being held retracted by stationary and movable abutment: m, n<1>, Fig. 4. When a measuring vessel is filled the pressure acts through a flexible member o to move the abutment n<1>, so that a member L<1> can be moved by its spring into a recess n<2>, its pin 3 then co-acting with internal teeth on a disc j. The disc ; j is rotated from the supply pump shaft, and the disc L is turned, until a spring-pressed member p<1> forces the member L<1> out of operative engagement with the disc j. In another form, the member o moves a member n<1>, Fig. 8, endwise, so that an arm r is depressed by a spring v into a recess, the movement of the arm r causing members q<1>, q<2>, Fig. 10, to form an operative connection between a shaft p<2> and the valve spindle p<1>, until they are retracted by a cam r<3> on the arm r engaging a stop r<4>. The means for stopping actuation after delivery of a predetermined quantity may comprise a member 24, Fig. 12, adapted to be depressed by a cam to prevent movement of the abutment n<1>. Each movement of the distributing valve f causes through a cam 2 the depression of a member 6, which carries pawls for actuating ratchet wheels 10, 12 in opposite directions to move indicating pointers 19, 13. The ratchet wheel 12, cam for depressing the member 24, sleeve of pointer 13, and pointer 19 are mounted on a shaft 17 movable axially against the action of a spring 23, when the ratchet wheels are to be disengaged to allow the pointer 13 to be zeroized by a spring 14, and to allow setting of the pointer 19 ; the member 6 also operates a totalizing counter. In a modification, the pointer 40, Fig. 5, carries a member 49 which prevents movement of the abutment n<1> when the pointer has returned to zerc from its set position. The valve f acts through cams 30 to move a frame 29 carrying pawls 33, 34 acting on ratchet wheels 35, 36 and the shaft 37 is pulled out against a spring 39 to effect resetting of the pointer 40 and zeroizing of the pointer 45, the ratchet wheel 35 being normally in engagement with a stud 38 on the shaft 37, and the wheel 36 being on a sleeve 42 having a coned engagement with the sleeve of the pointer 45.
Patent GB-1428966-A (GB)
Title: Keys
IPC: E05B29/06
Filed: 1972-04-22
Abstract: 1428966 Keys WILMOT-BREEDEN Ltd 16 April 1973 [22 April 1972 26 May 1972] 18083/73 and 24864/72 Divided out of 1428965 Heading E2A The claims of the present Specification relate to the key disclosed in Specification 1428965.
Patent GB-334304-A (GB)
Title: Improvements in or relating to apparatus for automatically delivering and weighing predetermined quantities of material
IPC: G01G13/00
Filed: 1929-06-13
Abstract: 334,304. Hughes, J., and Ward, T. O. June 13, 1929. Automatic - feed weighers.-A machine for delivering predetermined weight of granular-material from a hopper to a weighing device is provided with means for compensating for the material in suspension at cut-off such means being withdrawn electrically after a weighment for checking purposes. Material flows from a hopper 1 past a gate 34 into a measuring - chamber 2 normally closed at its lower end by a feedgate 26 pivoted at 27. At the beginning of an operation the feed-gate is opened by manually raising its extension 30. The gate 34 is simultaneously closed by a link 32 connecting the gates, and a projection 35 on the link rocks a contact 37 to effect the energization of a magnet 29 to hold the extension 30 in raised position. The material in the measuring- chamber falls into a receptacle 25 on the pan 3 of a weighing-scale, and is supplemented by a continuous dribble-feed from an auxiliary chamber 43. The dribble-feed continues until the pan sinks under the combined load of the receptacle 25 and the weighted arm 9 of a compensating- lever that normally bears on the pan. As the pan sinks, a projection 18 on a bent arm of the compensating-lever engages a flexible contact 13, thereby de-energizing the magnet 29, allowing the feed-gate to close by gravity, opening the gate 34 to refill the measuring-chamber, and rocking the contact 37 to energize a magnet 12 to raise the weighted arm 9 off the pan. The weighment is subsequently checked by a pointer 6 co-operating with a chart 7. The effect of the compensating- lever may be increased by a spring and may be varied by an adjusting-screw 17 controlling the normal distance between the contact 13 and extension 18. The capacity of the measuring- chamber 2 is adjustedby a screw 22 controlling the position of a partition 20 pivoted at 21. The dribble-feed is rendered visible by a window 46 and is adjustable in volume by a screw 45.