baber/WOPTO huggingface dataset:
Patent GB-1240291-A (GB)
Title: Polyimides
Inventor: ZECHER WILFRIED
IPC: C08G18/34
Filed: 1968-06-26
Abstract: 1,240,291. Polyimide coating. FARBENFABRIKEN BAYER A.G. 26 June, 1968 [7 Aug., 1967], No. 30432/68. Heading B2E. [Also in Division C3] In the production of polyimides imide linkages formed by reaction at 0 to 450C of (a) a cyclic dicarboxylic anhydride with (b) a carbamic or thiocarbamic acid ester of an aliphatic or araliphatic alcohol. Reactant (b) may have the formula where R 1  is a (z + 1) valent aliphatic or aromatic radical; R 2  is an aliphatic or araliphatic radical; z is 1 or 2; and X is -[-NH-COO-R 2 ], -OH, -NH 2  or -NCO. The anhydride (a) may contain 1 to 3 cyclic anhydride groups and when there is only 1, at least one other group capable of polycondensation reaction; it may be formed in situ. Numerous reactants (a) and (b) are mentioned. Other polyfunctional reactants, e.g. diamines, polyols, polycarboxylic acids or polyisocyanates may also be present. Reaction may be effected in various solvents in the presence of catalysts, fillers, pigments or polyesters giving products suitable for lacquers, films and mouldings. In specific examples the following reactants are used:-(a) trimellitic and pyromellitic anhydrides and bis (trimellitic anhydride) glycol ester; (b) bis (methoxycarbonylamino)-diphenyl ether and the carbamic esters from diphenyl, diphenylmethane or propane, tolylene or hexamethylene diisocyanate and glycol, butanol or hexane diol. Adipic acid is also used in Ex. 6. The lacquers are applied to glass or metal plates and stored.
Patent GB-341025-A (GB)
Title: An improvement relating to precipitating baths for artificial silk
IPC: C02F1/20
Filed: 1929-10-08
Abstract: Water for use as a precipitating bath for ammoniacal copper solutions of cellulose in the stretch spinning process is freed from dissolved oxygen and carbon dioxide by the addition of small proportions of alkali hydroxide and alkali hydrosulphite.  The residual dissolved nitrogen is not injurious.
Patent GB-691988-A (GB)
Title: Improvements in or relating to continuous rod cigarette making machines
Inventor: BOSTOCK GERALD HERBERT
IPC: A24C5/31
Filed: 1950-12-14
Abstract: 691,988. Cigarette-making machines. IMPERIAL TOBACCO CO. (OF GREAT BRITAIN & IRELAND), Ltd. Dec. 13, 1951 [Dec. 14, 1950], No. 30489/50. Class 130. A short-cigarette rejecting-device, for a continuous-rod machine of the kind in which, in normal operation, the cigarette rod 1 leaving the garniture 2 unsupportedly jumps a breakout gap G to enter a funnel 3 directing it to a cut-off 4, 6, the cigarettes thus formed proceeding to a conveyer 7 forwarding them axially to a catcher 15, 16 removing them transversely into row formation, consists of a rejector 10 positioned after the cut-off 4, 6 and actuated with delayed action from a feeler 31 which normally bears on the rod 1 as shown to prevent the rejector 10 from operating but moves to actuate the rejector when there is no co-acting rod. Rejection of the finally-cut cigarettes, which may be short, is thus effected when the funnel 3 is cleared by hand after machine stoppage, due to a break-out 22 or otherwise; and, upon starting, the delayed action allows rejection of the first one or more cigarettes cut, which may also be short, before the rejector 10 ceases to operate. The feeler 31, which is a pivoted arm bearing on the rod 1 through a roller 33, carries one member of a switch 29 which when closed energizes a solenoid 27 for delayed operation of a mercury switch 26 energizing a solenoid 24 to lower a platform 10, Fig. 2, so that cigarettes 34 fall sideways from the conveyer 7 to rejection. When raised, the platform 10 supports cigarettes in co-action with the conveyer 7 comprising two endless coil springs in parallel and which slope gradually towards the platform until a point opposite a detent 36 is reached at which drive of the cigarettes by the conveyer commences, the detent 36 serving by frictional retardation to ensure continuous abutment of the cut cigarettes prior to this point. A conveyer 11 moving faster than the rod 1 spaces the cut cigarettes for co-action with the catches 15, 16. Owing to the distance between the drive point of the conveyer 7 and the cut-off, which comprises a rotary knife 4 and a reciprocating ledger plate 6, the final cigarette cut upon rodbreak-out, which may be due to faulty pasting in the garniture 2 or mis-operation of a heater 42, is never forwarded by the conveyer 7. Specification 609,015 is referred to in the Provisional Specification, according to which the feeler 31 may support the roller 33 through ball bearings.
Patent GB-534765-A (GB)
Title: Improvements in or relating to electric batteries
IPC: H01M50/166
Filed: 1939-11-22
Abstract: 534,765. Batteries. SCHLOCHAUER, W. D. Nov. 22, 1939, No. 30536. [Class 53] An inert dry cell comprises an outer casing 1, a zinc container 5 enclosing a carbon electrode 2 and de-polarizing material 3, the container 5 being closed by a rubber washer 8 having two openings, one serving as an air vent and the other containing a small tube 9 through which the electrolyte is introduced. Sealing material 15 fills the space between the upper end of the zinc container and the upper end of the casing 1. The de-polarizing material is enclosed in a muslin bag. Reference has been directed by the Comptroller to Specifications 178,804, 191,488, [both in Class 53] and 369,708.
Patent GB-1011167-A (GB)
Title: Toothed profiles of gears for a gear pump
IPC: F04C2/16
Filed: 1962-08-09
Abstract: 1,011,167. Milling. H. IYOI. Aug. 9, 1962 [Aug. 9, 1961], No. 30587/62. Heading B3K. [Also in Divisions F1 and F2] A helical gear, for use with a similar gear in a gear pump, has a tooth profile with no undercutting and is generated by a rack (or a hob based on it) whose profile comprises circular arcuate crowns and troughs QP (Fig. 4) centred on the pitchline connected by lines tangential to these arcs, e.g. sine curves QO s , cycloids QO c , straight lines QO, or by a curve of the form y=sin (2x)<SP>1</SP>/<SP>2</SP>. The helical lead of each gear is equal to the width multiplied by the number of teeth (Fig. 3).
Patent GB-748101-A (GB)
Title: Improvements in or relating to mounting means for electric motors and other heavy devices
IPC: B61C9/38
Filed: 1953-11-05
Abstract: 748,101. Mounting electric motors. LORANT, H. J. Nov. 4, 1954 (Nov. 5, 1953], No. 30657/53. Class 35. [Also in Group XXIV] Mounting means for a motor 22 or other heavy device comprises a substantially horizontal rod 11 supporting the motor which is movable along the rod by a lead screw 38 but which is prevented from rotating under its weight about the rod by two brackets 23 rigidly attached to the motor and carrying a roller 29 or the like engaging a track surface 30 running parallel to the rod. Fig. 3 shows how the axial movement of the motor 22 along the rod 11 is effected. The rod 11 is journalled through and supported by the vertical side plates 12, 13 of the main frame. When a handwheel 54 is rotated, it causes a sleeve 45 to move round thereby rotating the lead screw 38, both the latter and the former being mounted within the rod 11. As the sleeve 45 is prevented from moving axially, the screw will move axially due to its threaded engagement with the sleeve 45, and consequently the brackets 23 together with the motor are moved axially by a head 39 provided on the screw 38. The brackets 23 also carry the roller 29 which so engages the surface 30 that the motor is pre. vented from rotating downwardly. The axial movement of the motor is indicated on a scale 36 by a pointer 35. The motor can also be moved angularly by a lever 19 keyed to a portion 17 of the rod 11. A spring-loaded belt-tensioning device 24 is also provided. Specification 561,216 describes in detail this belt-tensioning device and also the arrangement to move the motor angularly.
Patent GB-424513-A (GB)
Title: Improvements relating to the handlebars of cycles
IPC: B62K21/12
Filed: 1933-11-04
Abstract: 424,513. Clips. ENFIELD CYCLE CO., Ltd., and SMITH, F. W., Hewell Road, Redditch, Worcestershire. Nov. 4, 1933, No. 30664. [Class 44] [See also Group XXXI] A handle-bar b for cycles is secured to the stem a by a split clip a<2> which contains packing- pieces c and is tightened by a bolt a<3>. The pieces are located within the clip by projections c<1> on the pieces engaging apertures b<1> in the handle-bar.
Patent GB-1167487-A (GB)
Title: Process for Isolating Acrylic Acid from Aqueous Crude Acid
IPC: C07C51/48
Filed: 1968-06-27
Abstract: 1,167,487. Purifying acrylic acid. KNAPSACK A.G. 27 June, 1968 [29 June, 1967], No. 30714/68. Heading C2C. Pure acrylic acid is isolated from aqueous crude acid which contains acrylic acid, small proportions of acetic acid and possibly formaldehyde by extracting the aqueous, acrylic acid-containing crude acid with 10 to 15 parts by weight ethyl acetate per part by weight acrylic acid. The resulting organic extract is simultaneously washed with 15 to 25 parts by weight water per part by weight acrylic acid. The washed extract is separated by distillation into (a) pure acrylic acid, and (b) a readily boiling ethyl acetate/water azeotrope.
Patent GB-604330-A (GB)
Title: Improvements in duplicating machines
IPC: B41L11/00
Filed: 1945-11-16
Abstract: 604,330. Rotary duplicators. FORD, F. R. Nov. 16, 1945, No. 30718. [Class 100(ii)] In a rotary mirror-script duplicator, such as that described in Specification 557,886, in which the leading edge of a master sheet is secured to a cylinder 11 by a clamp 29 and in which the sheet is automatically changed without stopping the machine, an inclined tray 10 being provided down which the new sheet slides to a stop 15 below the end of the tray, the stop is hinged at 17 to the tray and has an arm 27 engaged by a sheet-deflector 23 whereby the stop is retracted against the action of a spring 21 before the clamp 29 reaches the position where it picks up a new sheet and simultaneously with movement of the sheet towards the cylinder. The member 23 is carried by arms 24 fixed to a shaft 25 rocked by a lever carrying a roller for actuating the clamp 29; a retaining-lever is provided as in Specification 557,886. An arm pivoted at 25 is rocked by the open clamp and engages a pin 20 on the stop 15 to move the latter out of the path of the clamp if not already retracted. Fingers 32 bear against the front of the sheet to prevent the sheet from curling, and a spring 33 fixed to the shaft 25 carries arms movable into contact with the front of the sheet when the stop 15 is retracted. The tray 10 may have an adjustable extension.
Patent GB-1175818-A (GB)
Title: Method of producing a Hot-Formed Aluminum-Base Product
IPC: B21B1/18
Filed: 1968-06-27
Abstract: 1,175,818. Rolling; making wire; continuous casting. SOUTHWIRE CO. 27 June, 1968 [28 June, 1967], No. 30753/68. Headings B3A, B3F and B3M. A method of producing an aluminium-base product, such as wire, includes casting the product and then hot-forming the product in its as-cast condition to elongate it by a factor of at least 20 and to destroy the as-cast grain structure. As shown, a wire is continuously cast in a mould formed by a grooved wheel 13 and a driven endless band 14, and is then rolled in the stands 17 of a continuous mill. A hot forging machine and a direct drill casting machine may alternatively be employed. The as-cast grain structure of the product is destroyed during hot-forming, by arranging that the product is deformed to a considerable degree perpendicularly to its axis. This can be effected by using a round-oval, or a triangular-triangular, pass sequence in the mill.
Patent GB-195120-A (GB)
Title: Improvements in carbide receptacles for holding the carbide in acetylene generators
IPC: C10H21/02
Filed: 1921-11-17
Abstract: The carbide holder of an acetylene generator is formed of interconnected metal links or of chain mail or fabric; and a series of such holders may be formed as pockets supported one above another in a suitable framing.  In use, the spent carbide passes through the links, which may conveniently be formed of wire of square or other section providing cutting edges; and the residual spent carbide is removed by agitating the holder in water.  To facilitate cleaning, the pockets may be made reversible so as to be turned inside out.
Patent GB-1506862-A (GB)
Title: Street and/or pedestrian zone cleaning machine
IPC: A46B3/14
Filed: 1975-07-23
Abstract: 1506862 Adjustable brushes J STRAUB 23 July 1975 [26 July 1974] 30811/75 Heading A4K [Also in Division El ] In a road sweeping machine (see Division E1) a brush 5, Fig. 2, on a frame 15 comprises two mutually-inclined cylinders on a shaft 1 incorporating a universal joint 2 and driven by a hydraulic motor 17. Each brush cylinder, Fig. 5, has a hollow interior divided into three compartments 6 each containing a rolled brush bundle 7 which emerges through a surface slit and clamp 8 whereby the brush bundles may be pulled out to compensate for wear. A further motor-driven brush 68, Fig. 6, comprises two diametrically-opposed brush bundle units 49 pivoted at 48 eccentrically of shaft 47, the units 49 being located by leaf-springs 54 and loaded by weights 52 so as to be swung out centrifugally. The brush bundles 68a, 68b are adjustably pulled out to give inner and outer sweeping circles respectively for large and fine debris.
Patent GB-221709-A (GB)
Title: Improvements in and relating to x-ray apparatus
IPC: H01J35/14
Filed: 1923-12-07
Abstract: 221,709. British Thomson-Houston Co., Ltd., (General Electric Co.). Dec. 7, 1923. Drawings to Specification. Alloys.-A solder having a high heat conductivity consists of 72 parts of silver and 28 parts of copper.
Patent GB-319525-A (GB)
Title: Wire spring mattress sectional tension bolt
IPC: A47C23/28
Filed: 1928-10-25
Abstract: 319,525. Foster, A. Oct. 25, 1928. Mattresses. - A mattress-tensioning device comprises a telescopic bolt having four parts, viz., a rod 17 screwed at each end and engaging a non-rotatable screwed socket 11 for the moving- bar 12, a rotatable internally-screwed socket 20 at the outer end and a part 19, threaded internally and externally, connecting the rotatable socket with the screwed rod.
Patent GB-366007-A (GB)
Title: An improved lifting jack for motor vehicles
IPC: B66F3/12
Filed: 1930-10-16
Abstract: 366,007. Lifting-jacks. GALLI, U., 19, Via Mario Pagano, Milan, Italy. Oct. 16, 1930, No. 30982. Convention date, Jan. 14. [Class 78 (iii).] A lazytongs linkage lifting-jack having a four-sided linkage has the lower links obtusely angled and the upper links acutely angled, the operating screw engaging nuts pivoted in the acute angles of the upper links; the lower links cross one another and are guided by a pin moving in vertical slots in the baseplate and engaging slots in both of the lower links at the point of crossing. The crutch is a slotted plate engaging the pivot pins of the upper links. The base C has pivots 1 carrying the obtuse-angled lower links A, which have pivots 2 at their upper ends carrying the acuteangled upper links B. Pivots 4 at the acute angles of the links B carry nuts engaging the right- and left-handed operating screw D. The links A are slotted at a, a<1> and work over a pin 5 moving in guide slots c. The links B are connected together. by a pivot 3 and have angled extensions b at their upper ends connected by pivots 6 which also engage slots f<2> in the. turned-over ends of the crutch plate F. .The operating handle may be engaged with the screw D by means of a bayonet - joint which is held by a spring on the end of the screw D. An extension G may be pivoted to the crutch plate. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the modification shown in Fig. 5 (Cancelled) in which the crutch is provided with downwardly inclined arms r carrying wheels R projecting below the baseplate E until the crutch is raised. The operating handle J is held for manoeuvring the jack by means of a bent bar T slidably engaged with the base and having a hooked end t<1> engageable with the handle. In a further modification, Fig. 7 (Cancelled), the wheels V are mounted on pivoted arms v and are pressed downwards by springs j. This subject-matter does not appear in the Specification as accepted.
Patent GB-1510492-A (GB)
Title: System for determining transfer function
IPC: H04B3/46
Filed: 1975-07-25
Abstract: 1510492 Measuring transfer function TIME DATA CORP 25 July 1975 [29 July 1974] 31237/75 Heading G1G The transfer function of an object is determined by energizing the object with an input signal X(t); obtaining a signal y(t) representing the response of the object to the energization; sampling the amplitude of the X(t) signal periodically to provide N samples in each of a series of M frames (timesegments) X1, X2 ... Xm; sampling the y(t) signal similarly in frames y1, y2 ... ym; averaging the X(t) signal over the M frames by computing the sum of the nth sample in each frame; averaging the y(t) signal similarly; forming the respective Fourier transforms of the two sum frames thus computed; and computing the transfer function as the ratio (or some other arithmetic function, examples of which are given) of the Fourier transforms. The invention is applicable to measuring the vibrational transfer function of a specimen on a shaker table energized with a random or swept sine signal. In the embodiment described, X(t) and y(t) are converted to digital samples for the computation steps. By repeating the computation for other frames, the computed transfer functions may be averaged to reduce error. Digital accumulators, or recirculating memories in conjunction with adders Figs. 3 and 4 (not shown), are used for summing the samples of X(t) or y(t). The computed transfer function can be used in a system Fig. 5 (not shown) for subjecting the specimen to vibration having a predetermined frequency spectrum. Fourier transformation may precede the summation in a modified system.
Patent GB-661550-A (GB)
Title: Improvements in briquetting presses
IPC: B28B3/16
Filed: 1949-12-06
Abstract: 661,550. Briquetting presses. SAHUT, CONREUR & CIE. Dec. 6, 1949 [Dec. 7, 1948], No. 31258/49. Class 87(ii) An agglomerating or briquetting press of the kind comprising a wheel formed with peripheral cells co-operating with a wheel formed with a peripheral groove, is characterized in that the peripheral speed of the grooved wheel is greater than that of the cell-bearing wheel. This gives an equal density of packing at the two ends of each cell. In Fig. 2 the periphery of a wheel A is formed into cells a which engage with a smooth groove g in a wheel B so that when the wheels rotate in opposite directions, coal dust fed in from above is compressed into briquettes under great pressure. Wheel B has a greater peripheral speed which forces more filling into the lower part of each cell which otherwise tends to be more lightly packed. In Fig. 4 the cell-bearing wheel A<SP>1</SP> is positioned inside a ring C having a smooth groove c on its inner circumference. The ring C is driven at a greater peripheral speed than the wheel A<SP>1</SP>. Specification 646,175 is referred to.
Patent GB-879615-A (GB)
Title: Improvements in or relating to rotary tool holders, for drilling and other machine-tools
IPC: B23B31/08
Filed: 1959-09-14
Abstract: 879,615. Chucks. SCULLY-JONES & CO. Sept. 14, 1959 [Oct. 16, 1958], No. 31272/59. Class 83 (3). A self-aligning tool-holder comprises a driving member 14, Fig. 1, adapted to be secured to a machine tool spindle, a tool-holding member 12 coupled to the driving member by an intermediate floating-type coupling 24, 25 and 23, 20, with a number of sets of roller bearings provided between the driving member and the toolholding member, the rollers of each set having their axes in a single plane. The bearing sets are contained each side of a projecting collar 26 on the tool-holding member and secured by a sleeve 17 screwed to the member 14. Each bearing set comprises outer bearing rings such as 33, 35, an intermediate bearing ring 42 and cages 40, 41, Fig. 5, with sets of rollers, one set with the axes of the rollers at right angles to the other set. Each cage also carries diametrically opposed balls 52, 53, spaced at right angles which are of greater diameter than the bearing rollers and fit elongated recesses in the inner and outer bearing rings. The bearing thus takes the compressive force and has a limited float in a transverse direction. U.S.A. Specification 2,533,758 is referred to.
Patent GB-705506-A (GB)
Title: Bis-quaternary ammonium salts possessing ganglionic blocking activity
Inventor: ASHLEY JULIUS NICHOLSON
IPC: A61K31/14
Filed: 1950-12-22
Abstract: N,N-dimethyl p-dimethylamino phenyl ethylamine bis methiodide is prepared by reacting thionyl chloride with p-dimethylaminodihydrocinnamic acid.  The product is treated with sodium azide in acetone, and then with hydrochloric acid, to form p-dimethylaminophenylethylamine, which is subsequently treated with methyl iodide.  The bis methiodide may also be prepared by reacting methyl iodide with a methanol solution of beta-p-aminophenylethylamine.  N,N-dimethyl beta p-dimethylaminophenylethylamine bis ethiodide is prepared by methylating p-dimethylaminophenylethylamine and then treating with ethyl iodide.ALSO:A pharmaceutical preparation possessing ganglionic blocking activity contains, in association with a compatible non-toxic diluent, a bis quaternary salt containing the cation <FORM:0705506/VI/1> where R represents methyl or ethyl.  A tablet or elizir is preferred.  Examples relate to the preparation of N:N- dimethyl ppdimethylaminophenylethyl-amine bis methiodide m.pt. 255 DEG C and the bis ethiodide m.pt. 200 DEG C (see Group IV(b)).
Patent GB-932773-A (GB)
Title: Improvements in or relating to additives for fuels for eliminating deposits in the combustion chambers of engines
IPC: C10L1/18
Filed: 1959-09-15
Abstract: Gasoline compositions contain esters of organic carboxylic acids and tertiary alcohols in amounts of 0,005% up to but not including 0,1% by volume except that when the gasoline contains olefinic and/or aromatic hydrocarbons in an amount less than 10% by volume the range may be 0,005% up to 5%.  In examples gasolines contain trimethyl carbinol benzoate, dimethyl ethyl carbinol benzoate, trimethyl carbinol oleate, trimethyl carbinol metatoluate, dimethyl ethyl carbinol acetate, the acetate of 1-methyl cyclohexanol, tertiary butyl isovalerianate, methyl-ethyl-isopropyl carbinol benzoate, dimethyl-benzyl carbinol benzoate, tertiary butyl cinnamate, tertiary butyl pyromucate, tertiary butyl propionate, tetraethyl lead and methyl cycloperta-dienyl manganese tricarboryl; the proportions of saturated hydrocarbons, aromatic hydrocarbons and olefinic hydrocarbons, in the gasolines are given.  A list of suitable esters is given, some containing halogen, nitro and amino groups.ALSO:The following esters, said to be novel, may be prepared by the general method of Norris and Rigby, J.A.C.S. 54,2088 (1932):-oleate of tertiary butyl alcohol, benzoate of diethyl-methyl carbinol, benzoate of dimethyl-isopropyl carbinol, benzoate of methyl-ethyl isopropyl carbinol, benzoate of nitro-trimethyl carbinol, benzoate of dimethyl-benzyl carbinol, m-toluate of tertiary butyl alcohol, m-amino benzoate of tertiary butyl alcohol, pyromucate of tertiary butyl alcohol, 3-phenyl-3-benzoyloxy ethyl butyrate and 3-methyl-3-benzoyloxy-ethyl butyrate.