baber/WOPTO huggingface dataset:
Patent GB-662558-A (GB)
Title: Improvements in or relating to the preparation of acyl derivatives of aminostilbene sulphonic acids
Filed: 1949-03-28
Abstract: Acyl derivatives of 4,41-diaminostilbene-2,21-disulphonic acid are prepared by reacting 4,41-diaminostilbene-2,21-disulphonic acid with a carboxylic acid halide of the benzene series in an aqueous and preferably alkaline medium containing one or more low molecular weight ketones, particularly acetone, methyl ethyl ketone and mixtures thereof.  The reaction medium preferably contains from 10 to 70 per cent by weight of the ketone, using temperatures up to 40 DEG C.  Suitable acid halides are those of benzoic acid, toluic acids, halobenzoic acids, nitrobenzoic acids, acylaminobenzoic acids, azodi- and azoxydi-benzoic acids, cyanobenzoic acids, dichloro-benzoic acids, nitrotoluic acids, and particularly alkoxybenzoic acids such as anisic acid, the methyl ester of salicylic acid, o-ethoxybenzoic acid and 2,3-dimethoxybenzoic acid.  Examples are given in which the sodium salt of 4,41-diaminostilbene-2,21-disulphonic acid is acylated in the presence of sodium carbonate solution with (1) anisoyl chloride and acetone; (2) p-toluyl chloride and acetone; (3) o-methoxybenzoyl chloride and acetone; (4) o-methoxybenzoyl chloride and acetone; (5) m-methoxybenzoyl chloride and acetone; (6) p-ethoxybenzoyl chloride and acetone; (7) p-nitrobenzoyl chloride and acetone; (8) 2,3-dimethoxybenzoyl chloride and acetone; (9) o-butoxybenzoyl chloride and acetone; and (10) o-chlorobenzoyl chloride and methyl ethyl ketone.ALSO:Blue-fluorescent 4,41-di-(o-alkoxybenzoyl)-diaminostilbene-2,21 - disulphonic acids, preferably containing from 1 to 4 carbon atoms in the alkoxy groups, are used in the washing or rinsing of textile materials, or are incorporated in soaps to enhance their cleansing and whitening action.ALSO:Blue-fluorescent 4, 41-di (o-alkoxy-benzoyl)-diaminostilbene-2, 21-disulphonic acids, preferably containing from 1 to 4 carbon atoms in the alkoxy groups, are incorporated in soaps to enhance their cleansing and whitening action.
Patent GB-307928-A (GB)
Title: Twisting device for thread winding machines
IPC: D01H7/92
Filed: 1929-03-14
Abstract: 307,928. Karsch, A., and Daut, A. March 16, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Twist tubes and liketwisters.-A twisting-device for thread-winding machines comprises a spindle a provided with eccentrically arranged apertures c through which the thread g passes, and with a smooth surface b against which the thread is maintained by springs d, d'.
Patent GB-1010572-A (GB)
Title: Dibenzocycloheptene derivatives
IPC: C07C51/08
Filed: 1963-03-01
Abstract: The invention comprises dibenzocycloheptene derivatives of the formula <FORM:1010572/C2/1> wherein Z is an ethylene group -CH2CH2- or vinylene group -CH = CH-, R1 and R2 are hydrogen, halogen, e.g. Cl, or C1- 3 alkyl groups R3 is hydrogen, C1- 3 alkyl, e.g. CH3, or aralkyl, e.g. benzyl and R4 is hydrogen, or R3 and R4 together form an alkylene chain of 4 or 5 carbon atoms and Y is hydrogen or a C1- 3 alkyl group, and their preparation by reacting the corresponding carboxylic halide with ammonia or an amine HNR3R4, or in the case where R3 and R4 are both hydrogen, by partially hydrolysing the corresponding nitrile.  5 - Cyano - dibenzocyclohepta - dienes and -trienes are made by reacting the appropriate 5 - chloro - dibenzocycloheptene with a heavy metal cyanide, e.g. silver cyanide. If required, a 5-cyano compound wherein Z = -CH2CH2-may be brominated followed by dehydro-bromination of the resulting bromo compound to give a compound wherein Z is -CH = CH-. 5 - Alkyl - 5 - cyano compounds, i.e. derivatives wherein Y is an alkyl group such as CH3, are made by alkylation of the above compounds in the presence of an alkali-metal amide.  Dibenzocyclohepta - diene- and -triene - 5 - carboxylic halides are made by hydrolysing the corresponding nitrile with aqueous sulphuric acid and treating the resulting 5-carboxylic acid with a halogenating agent such as a thionyl or phosphorus halide.  The 5-carboxylic acids may also be made by treating the corresponding hydrocarbon with potassium amide or a sodium-naphthalene complex in tetrahydrofuran and reacting the resulting 5-metallo-compound compound with carbon dioxide.  3 - Chloro - dibenzo(a,e)(1,3,5) - cycloheptatrien-5-ol is made by reducing the corresponding 5-ketone with lithium aluminium hydride. 5 - Chlorodibenzo(a,d)(1,4) - cycloheptadiene is made by the action of thionyl chloride or gaseous hydrogen chloride on the 5-hydroxy-dibenzocycloheptadiene.  Pharmaceutical preparations active as anti-convulsant agents in pentylenetetrazole or electro-shock therapy, comprise the above compounds of the invention in association with a carrier suitable for administration orally (e.g. as tablets or capsules) or by injection.
Patent GB-118859-A (GB)
Title: Improvements relating to Parachutes.
Inventor: CALTHROP EVERARD RICHARD
IPC: B64D17/00
Filed: 1917-06-12
Abstract: 118,859. Calthrop, E. R. June 12, 1917. Parachutes.-In parachutes of the kind normally nested in a container and launched therefrom by application of the load, for example as described in Specification 21312/14, the mouth of the parachute is arranged to be automatically expanded as it issues from the container by detachablyarranged spring sectors. The spring sectors comprise normally straight springs 3 adapted to be threaded through eyelets 2 on the parachute and to be bent into circular form, Fig. 2, and nested within the container 5, Fig. 1. When the load is applied, the springs 3 straighten out and, in so doing, release the eyelets, 2 as indicated in Fig. 5. Readily fracturable threads 12 may be arranged across the mouth of the container, which has a central projection 7 to facilitate folding the parachute.. The springs may be attached to rigging tapes 4, or by cords 13 to the container.
Patent GB-1122753-A (GB)
Title: A seed drill for discharging seeds
IPC: A01C7/12
Filed: 1967-02-22
Abstract: 1,122,753. Seed sowing machines. AMAZONEN-WERKE H. DREYER. 22 Feb., 1967 [25 Feb., 1966; 19 April, 1966], No. 8442/67. Heading A1D, A seed drill is provided with a separate distributing mechanism for each row of seeds to be sown comprising a seed wheel 2 which is mounted in a housing 1, the housing 1 being readily attached to a fixed part 6 of the machine by means of hooks 5 and a resilient member 13 having a projection 12 which engages in a recess 14 on the part 6.
Patent GB-1467762-A (GB)
Title: Change-speed gear transmission of the multiple box type es pecially for agricultural vehicles and/or selfpropelled civil engineering machinery
IPC: B60K17/08
Filed: 1975-02-28
Abstract: 1467762 Change-speed gear KLOCKNER-HUMBOLDT-DEUTZ AG 28 Feb 1975 [2 March 1974] 8442/75 Heading F2D A change-speed transmission for an agricultural or constructional vehicle, comprises, in series ahead of a main change-speed gear 7, an auxiliary change-speed gear 6, having output ratio wheel pairs 22, 27, with wheels 24, 30, secured to the auxiliary gear output shaft 23, and meshing wheels 21, 29 selectively clutchable, by an hydraulically engaged double friction clutch 19, to a countershaft 17 driven by a main input shaft 5 through an input wheel pair 15, 16, of which the wheel 16 can be positively clutched, as by an axially slidable pin clutch 25, directly to the wheel 21 of the pair 22, thereby providing an overdrive by-pass of the selector friction clutch 19. The main change-speed gear provides three reduced ratios and direct drive to an aligned output shaft 31, through double synchromeshed clutches 40, 43, wheel pairs 36, 37, 38 and a countershaft 33, driven by the auxiliary gear output shaft 23 through a wheel pair 34, 35. A road-wheel-driving differential gear 10 is bevel driven by a final output shaft 45, aligned with the auxiliary gear countershaft 17, and driven through a selectable variety of meshed gear paths by the output shaft 31 of the main gear 7. These paths comprise meshed wheels 50, 51; 48, 49; 44, 46; 44, 64, idler shaft 63, 65, 66; and 50, 51, 54, 55, second countershaft 57, 58, 60, introduced by double clutches 47, 52 and single clutch 60 and providing respectively a slow field speed; high road speed; normal field speed; reverse; and crawl. The main and final ratios are preferably controlled by a single control (not described). A wheel 67 in the final output shaft 45 may drive the front wheels of the vehicle. A power take-off shaft 68 runs through the shafts 23, 31, and is driven alternatively to the counter shaft 17 through a selective double friction clutch 3, 4.
Patent GB-319345-A (GB)
Title: Improvements in sewing machines
IPC: D05B29/00
Filed: 1929-03-16
Abstract: 319,345. Union Special-Maschinenfabrik Ges. Sept. 21, 1928, [Convention date]. Addition to 314,509. Thread-cutters; feed by dogs.-In a device for severing the enchained stitches between stitched articles as described in the parent Specification, an auxiliary or feed dog section is provided for feeding the enchained stitches to the cutting mechanism. The enchained stitches 15 lie on the edges of a central slot 10 in the throat plate 1. The auxiliary feed dog section 11 works through the slot to feed the stitches over the stationary blade 6 of the cutting mechanism 6, 7, which is operated as described in the parent Specification. The throat plate is grooved at 9 and has a corrugated part 16 to enable the middle resilient section 18 of the presser foot 17 to hold the enchained stitches firmly during cutting. The main feed dog 3, 3 with its auxiliary sections 12, 12 work through slots in the throat plate and cooperates with the main presser-foot sections 17 in the usual way.
Patent GB-703640-A (GB)
Title: Dropper inserts
IPC: B65D47/18
Filed: 1951-04-12
Abstract: 703,640. Drop-delivering stoppers. METTEN, T. April 12, 1951 [April 12, 1950; June 26, 1950], No. 8562/51. Class 125 (3) A stopper which delivers liquid in drops has a delivery groove 1, a grip plate 4 and a tubular extension 3 for the entry of air, the stopper being g constructed of an elastic artificial material such as polyethylene. Modifications have several grooves which may be connected by a channel.
Patent GB-689006-A (GB)
Title: Weighing scales
IPC: G01G5/00
Filed: 1951-04-13
Abstract: 689,006. Weighing-apparatus. AVERY, Ltd. W. & T. (Williams, L. S.). April 13, 1951. No. 8610/51. Class 143. In a hydraulic weighing scale the load on the platform 1 is transmitted to hydraulic capsules 10 through struts 22 which rest on bearing blocks 21 in sockets 20 secured to the upper capsule plate, and which engage bearing surfaces on blocks 23 secured to the platform 1; all the bearing surfaces being shaped to permit rolling movement of the strut, and horizontal displacement of the platform, without damaging the capsules. As shown, the surfaces on the blocks 21 and the upper ends of the struts are spherical, whilst the surfaces on the blocks 23 and the lower ends of the struts are flat, but in modifications (not shown) other combinations of curved and flat surfaces are described. The curvature of the surfaces and the lengths of the struts are adjusted to produce neutral equilibrium of the platform over a limited range of horizontal displacement. Rubber collars 27 which, when the platform is unloaded, separate the struts from the surfaces on the blocks 23, serve to protect the upper bearing surfaces and provide a restoring force to counteract horizontal movement of the platform. Shrouds 24 prevent ingress ot foreign matter to the lower bearing surfaces. The upper plates of the capsules are interconnected by the usual rigid H frame 17, 18.
Patent GB-708986-A (GB)
Title: Improvements in or relating to cigarette cases
IPC: A63H5/00
Filed: 1952-04-04
Abstract: 708,986. Cigarette cases. AUTH,. A., [trading as AUTH METALLUND STAHLWARENFABRIK, A.]. April 4, 1952, No. 8670/52, Class 18 A cigarette case is combined with a lighter k, or a match container (not shown), and a musical box mechanism w, the case having spiring-loaded flaps e closing the cigarette compartment and a cover u closing the case side. The flaps e are held closed by the engagement of dents i with holes h in spring fingers g which are depressed by a knob j to release the flaps. If a match container is fitted, a strikinig surface is arranged inside a cover l. The cover u may have a relief map decoration.
Patent GB-721380-A (GB)
Title: Improvements in or relating to a process for the treatment of fabrics and yarns madefrom regenerated cellulose
IPC: D01F11/02
Filed: 1952-04-04
Abstract: Regenerated cellulose fabrics and yarns are impregnated with an aqueous solution containing 4-10 per cent by weight of a dialdehyde in which the aldehyde groups are separated by a chain of 3-7 carbon atoms and about 0.3-1.2 per cent by weight of a weakly ionizable organic acid catalyst, and the treated fabric or yarn is dried at a temperature below the boiling point of water and then baked at a temperature above the boiling point of water. The dialdehyde may be a -hydroxy adipaldehyde to which, to obtain aqueous solutions of the order of 10 per cent concentration, dioxane may be added.  The catalyst may be oxalic acid, adipic acid or succinic acid.  In examples the drying temperature is about 50 DEG  C. and the treated fabric is baked for 3 to 4 minutes at 110-120 DEG  C.  Regenerated cellulose filaments may be treated whilst in the gel state. Specification 686,339 and U.S.A. Specification 2,436,076 are referred to.
Patent GB-1463724-A (GB)
Title: Bearings
IPC: F16C33/60
Filed: 1974-02-26
Abstract: 1463724 Bearings RKS 26 Feb 1974 [20 March 1973] 8734/74 Heading F2A A bearing comprises two rows 5, 7 of cylindrical oblique contact rollers, each row being located in a respective annular space 3, 4 defined between two annular monobloc race members 1, 2, the annular spaces containing surfaces 1b, 1c, 2a, 2d which form tracks for the rollers and other surfaces 1a, 1d, 2b, 2c which are not loaded, and one of the race members having a filling orifice 9 which extends at least into one of the annular spaces through one of the non-loaded surfaces and through which rollers with or without a cage can be inserted into the space. The orifice is closed by a plug 10, which may be made from plastics or from the same material as the race members. There may be two orifices, each extending into a respective annular space.
Patent GB-698083-A (GB)
Title: Improved control arrangements for roller-mill feed
IPC: B02C4/28
Filed: 1950-04-06
Abstract: 698,083. Roller mills. BUHLER. GEB. April 6, 1950 [April 14, 1949]. No. 8754/50. Class 59 [Also in Group XXIX] An automatic material - feed - control arrangement for roller mills, comprising a control device disposed in the inlet hopper and influenced by the material supply and a servomtor controlled through the said device and' operated by means of pressure fluid is characterized in that the said control device and the servomotor form a unit disposed in the inlet hopper of the roller mill. A control element 15, adapted to be depressed by grain flowing down a feed shoot to the mill rollers, actuates, through a fluid pressure servomotor 12, carrying the element 15 and mounted in the shoot, and through a linkage 6,<SP>1</SP> 5, a feed gate 3 which controls the feed to grinding rollers 1. The control device may alternatively adjust the rotation of feed rollers 2. The servomotor 12 comprises a piston 17 slidable in a cylinder 16 and carrying an actuating roller 11 at its lower end. In the raised position of the control element 15 compressed air passes from a supply line 14 through a port 22 in the top of the piston 17, through ports 24, 25 in the side of the piston and out to the atmosphere through a bore 26 in the bottom of the piston. The control element 15, when depressed against' the action of an adjustable spring 40, moves, through a link 35, a pin 23 to close the top piston port 22 whereupon the compressed air will begin to move the piston down against the action of a spring 19. Specification 698,084 is referred to.
Patent GB-1056964-A (GB)
Title: Improvements in or relating to methods of, and apparatus for, producing cold at low tem peratures and/or liquefying a gaseous medium
IPC: F25B9/14
Filed: 1965-03-02
Abstract: 1,056,964. Refrigerating. PHILIPS GLOEILAMPENFABRIEKEN N.V. March 2, 1965 [March 4, 1964], No. 8847/65. Heading F4H. A method of refrigerating comprises compressing a gaseous medium at 10 to above its critical pressure, cooling and liquifying it in heat exchanger 13, expanding the liquid medium to a pressure below its critical pressure at least in part in an expansion machine 14 without phase-transition occurring in the machine, using the expanded liquid to cool a load 18 and returning the vapour to the compressor via heat exchanger 13. The returning vapour cools the compressed medium to substantially the boiling-point of the expanded medium to ensure that phase transition does not occur in the machine 14. As shown, the medium from the machine 14 is further expanded in a throttle 16. For starting the system a valve 23 is used to direct the cooled medium to a throttle 21 until sufficient cooling is achieved in heat exchanger 13 to enable expansion machine 14 to be used. In a modification (Fig. 4, not shown), a coil (24) immersed in the liquid refrigerant is interposed between heat exchanger 13 and machine 14. In further modifications (Figs. 5 and 6, not shown), the expansion machine comprises a double-acting piston (60) reciprocating in a cylinder (59) to vary the volumes of upper and lower spaces (61 and 62). The compressed medium is supplied to space (61), displaced to space (62) via heat exchangers and one or more regenerators and expanded in space (62) by connecting cylinder (59) to the low pressure side of the compressor. The expanded medium returns to the compressor via said heat exchangers and regenerator(s) and is vaporized during its return in the heat exchanger nearest to space (62). The working medium may be hydrogen or helium.
Patent GB-338836-A (GB)
IPC: B25H1/00
Filed: 1930-03-20
Abstract: 338,836. Prokasky, A. March 23, 1929, [Convention date]. Drilling-machines. - A device for drilling accurate holes in glass panes comprises a support 1 for guiding the drill-spindle 2 perpendicular to the work 19 and adjustably secured by a bar 12 to a plate 11 which is attached to the work by a concentric series of rubber suction cups 10. For vertical work the guide is also supported by pillars 15 having rubber feet 16 and adjustable by thumb nuts 14. The work is supported at a point opposite the drill by a wooden block 18 secured by springs 21 and suction cups 20. The drill is rotated by a flexible shaft 4 and is fed by hand pressure applied to a member 5 carrying guides 7 slidable through the support 1 and engaging the drill-spindle by means of a collar and ball bearings within a cap 8. A lubricator for the spindle is provided on the support 1 and a mixture of emery and water is supplied to the drill.
Patent GB-415968-A (GB)
Title: Presser-foot for sewing machines
IPC: D05B29/00
Filed: 1934-03-22
Abstract: 415,968. Sewing machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.-(Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.) March 22, 1934, No. 8964. [Class 112.] A presser foot is modified to carry out such operations as edge-stitching, blind stitching cords, piping, binding, gathering, picotting, &c. The presser foot comprises a shank 10 carrying a sole plate having a flat work-engaging portion 14, an inclined portion 14<1> and a raised toe portion 15. The flat portion has a work guiding slot 16 which also serves as a needle opening and has a guiding groove 16<1>. The raised portion 15 has left and right open-ended guiding slots 17 and 18. An auxiliary edge guiding plate 22 is adjustably secured on top of the sole-plate by a screw 19. This plate has a depending guide lip 23. The plate 22 also carries an upstanding element 221 with a cord guiding aperture 24 having an entrance opening 24<1>. The shank 10 is provided with an aperture 25 through which braid or cord can be passed from back to front. A slot 26 is provided to facilitate the placing of the cord or braid in the aperture. Removably carried by the toe portion 15 is the gathering attachment. This has an inclined part 28, a flat part 29 and a raised part 30. The part 28 has a U-shaped clearance notch 28' and the parts 29, 30 have L-shaped flanges. The gathering attachment may be placed in operative or inoperative position. At the front end of the gathering attachment is a tip 33 with a cord-guiding aperture 35.
Patent GB-1512163-A (GB)
Title: Toughened glass sheets
IPC: C03B27/052
Filed: 1976-03-05
Abstract: 1512163 Differentially tempered glass TRIPLEX SAFETY GLASS CO Ltd 23 Feb 1977 [5 March 1976] 08995/76 Heading C1M A glass sheet of thickness 2À5-3À5 mm. is differentially quenched to form highly toughened regions 26 interspersed with regions 27 which are less toughened, the average central tensile stress in the sheet being 53-62 MN/m.<SP>2</SP>, and there being areas 28, 29 in which the principal stresses acting in the plane of the sheet are unequal, the principal stress difference in said areas being at a maximum of 8-25 MN/m.2, the major principal stresses in adjacent areas 28, 29 of maximum stress difference being in different directions 30, 31, and the distance x being centres of such areas being 15-30 mm. The pattern shown is produced by vertical oscillation of a high pressure quenching frame (the positions of blowing apertures 18 are shown). Quenching jets which are stationary or in circular motion may also be employed .
Patent GB-125952-A (GB)
Title: Improvements in Belt Adjusting Means.
IPC: F16H7/16
Filed: 1919-04-09
Abstract: 125,952. Ford & Son, H., (Assignees of Ford, H.). April 15, 1918, [Convention date]. Tension arrangements.-To tension the belt by which the fan of a motor - vehicle radiator is driven, a spindle 8 supporting the fan 18 and its pulley 15 is adjusted in a bracket 1 by a pair of eccentric washers 4, 5. The washers are fixed eccentrically to the spindle by keys 9, and are clamped in the bracket and against a shoulder on the spindle by a nut 10 locked by a cotter 13. A squared end. 11 enables the spindle and washers to be rotated by a wrench for adjustment. The pulley 15 has flanges 20 to guide the belt 19.
Patent GB-375817-A (GB)
Title: Improvements in or relating to means for preventing unauthorised use of motor vehicles
IPC: B60R25/04
Filed: 1931-03-24
Abstract: 375,817. Preventing unauthorized use of motor vehicles. GOLDMANN, C. H., 10, Hindenburgstrasse, Bad Oeynhausen, Germany. March 24, 1931, No. 9019. [Class 79 (iii).] On a motor vehicle, a door 9 which can be locked, may be adapted, when closed, to push back a slidable rod 7 protruding through the door post 8 thereby bringing into action means. for locking the bonnet, the other doors of the vehicle, &c. The invention consists in means for rendering such locking arrangement inoperative at will. For this purpose, a slidable plate 23, Figs. 4 and 5, provided with an aperture 24, is let into the edge of the door, covering a recess 25 opposite the location of the slidable rod which thus is operated when the plate 23 covers the recess 25 but not when the aperture 24 is brought into alignment therewith. The rod 7, when pushed back by the door, rocks a cross shaft 5, Figs. 2 and 3, from which extend arms operating slidable plates 3 with keyhole slots engaging pins 2 on the bonnet flaps 1. One of the plates 3 may co-operate with a switch 14 to interrupt or short-circuit the ignition whilst an additional arm 10 on the cross-shaft may operate, through Bowden or like mechanism 11, any suitable locking device for the closing plug 12 on the petrol tank 13. In the arrangement shown in Fig. 3, the arms 15 on the cross-shaft are extended below the keyhole plates 3 and are connected by rods 17 to a rear rock shaft 19 provided with bent fingers or catches 20, 21 for locking the other doors. In this form, the cross shaft 5 may be dispensed with, the one arm 15 acting on the other through the connections to the shaft 19. When the door 9 is opened, the rod 7 is pulled by a spring 16 to release the locking devices.