baber/WOPTO huggingface dataset:
Patent GB-299791-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: C09B31/22
Filed: 1928-10-31
Abstract: 299,791. Soc. of Chemical Industry in Basle. Oct. 31, 1927, [Convention date]. Azo dyes.-Direct dyes for cotton are obtained by coupling a diazo compound of the benzene or naphthalene series containing no hydroxyl group with a further diazotixable component of the benzene or naphthalene series containing no hydroxyl group, rediazotizing, coupling with a further diazotizable component containing no hydroxyl group, rediazotizing, and coupling with 1 :5 : 7-aminonaphtholsulphonic acid in an acid, neutral, or alkaline medium. The products give uniform grey to blue-grey and green-grey dyeings from neutral or feebly alkaline baths. The following examples are specified. (1) 'The dyestuff aniline -> Cleve's acid # Cleve's acid -> (alkaline) 1: 5 : 7-acid dyes cotton green-grey; similar dyestuffs are obtained when the aniline is replaced by a toluidine, p-aminoacetanilide, or a sulphonic acid of aniline, a toluidine., p-nitraniline, an acetylphenylenediamine, a p-aminophenyloxamic acid, or corresponding naphthalene derivatives, and the Cleve's acid by a-naphthylamine or 1-amino-2-methoxy-5-methylbenzene. (2) The dyestuff 2-aminonaphthalene-4: 8-disulphonic acid # a-naphthylamine # Cleve's acid # (acid) 1 : 5 : 7-aoid dyes cotton a greenish blue-grey, and the dyeing may be further diazotized; the first component mav be replaced by a- or #-naphthylamine or a sulphonic acid thereof, and other middle components containing no hydroxyl group may be used. A table is given showing the properties of the dyestuffs obtained by using various components and the colours of the corresponding dyeings on cotton, specified first components being metanilic acid, 2-aminonaphtbalene-4 : 8-disulphonic acid, aniline, and Cleve's acid, specified second components Cleve's acid and a-naphthylamine, specified third component Cleve's acid, and the fourth component being coupled (1) alkaline, (2) acid, in each case. Specifications 25780/01 and 3654/03 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) includes also the use of diazo and middle componets of the benzene series in general. This subject-matter does not appear in the Specification as accepted.
Patent GB-494994-A (GB)
Title: Improvements in or relating to spectacles
IPC: G02C5/12
Filed: 1937-11-17
Abstract: 494,994. Spectacles. WHITNEY, F. Nov. 17, 1937, No. 31675. [Class 97 (i)] In a spectacle frame of the type in which nose-pads are carried on an auxiliary bridge vertically adjustable on the main frame, the nose pads 9 are carried on arms 10 attached to the auxiliary bridge 12 between the eyelets 13 and 14 on the main frame in which the auxiliary bridge can slide. The auxiliary bridge is slightly resilient and retained in any setting by friction.
Patent GB-160523-A (GB)
Title: Improvements in gyrostatic controls for aeroplanes and the like
IPC: B64C1/00
Filed: 1919-12-18
Abstract: 160,523. Smith, W. S., and Smith, G. L. Dec. 18, 1919. Steering, automatically. In a gyrostatic control of the type in which the gyrostat responds to the rate of turn from a straight path as distinguished from the amount of the turn, the gyrostat acts upon a balanced valve controlling a servo-motor which can oscillate a false rudder bar that is flexibly connected to the pilot's rudder bar. The gyro-rotor 3 spins about an axis 4, which is transverse of the aircraft, and is carried by a frame 5 mounted upon an axle of precession 6 arranged fore and aft of the aircraft and controlled by springs 23. The axle 6 operates a balanced valve in a casing 9, whereby compressed air is admitted to one or other of the cylinders 13, 14 according to the direction in which the aircraft is deflected from its course. The rod of the pistons 15, 16 acts upon a false rudder bar 18, pivoted at 19 and connected to the pilot's rudder bar 21 by flexible means 20. According to the Provisional Specification, the gyrostat may actuate the lateral or longitudinal control members, and may act through an electromagnetic relay.
Patent GB-1451665-A (GB)
Title: Cutting tools
IPC: E21C35/19
Filed: 1973-07-04
Abstract: 1451665 Mineral-mining picks EDMUND NUTTALL Ltd 3 May 1974 [4 July 1973] 31857/73 Heading E1F In a mineral-mining cutting tool of the chisel type, i.e. a tool having a generally planar cutting face 2 extending laterally of the intended direction of travel of the pick and raked back from its leading cutting edge, which may be straight or rounded, the tool has a shank of V section over at least part of its cross section, with the apex 4 of the V pointing in the intended direction of travel of the tool. Such a sectional shank creates a free flow of mineral away from the cutting face of the tool. The tool may be of the twin headed type and the shank of such a tool may have a diamond or like cross section so that a V section of the shank points towards each cutting face of the tool. Specification 1402489 is referred to.
Patent GB-1166220-A (GB)
Title: Improved Alloy Steel.
Inventor: TETLEY FREDERICK WILLIAM
IPC: C22C38/38
Filed: 1968-07-04
Abstract: 1,166,220. Steel. SWIFT LEVICK & SONS Ltd. July 4, 1968, No. 31862/68. Addition to 1,013,239. Heading C7A. A modification of the austenitic steel of U. K. Specification 1,013,239 has the following composition in percent by weight:- C 0À2 -1 Cr 14 - 26 Mn 2 - 16 N 0À35 - 0À7 Nb 0À25 - 3 V 0À25 - 5 Co 0 - 5 Mo 0 - 3 Ni less than 1 S up to 0À2 Si up to 0À7 Ti - 1À5 W 0 - 4 the balance, apart from impurities, being iron. The steel has improved hot working properties over that of Specification 1,013,239 and may be used for I.C. engine valves. The steels may be solution treated at 1200‹C., water quenched and tempered at 675‹ C.
Patent GB-804362-A (GB)
Title: Improvements in or relating to the control of dynamo-electric machines
IPC: H02P7/34
Filed: 1956-02-28
Abstract: 804,362. Automatic speed control systems. SQUARE D CO. Feb. 28, 1956 [Feb. 28, 1955], No. 32185/57. Divided out of 804,361. Drawings to Specification. Class 38 (4). [Also in Group XXXVII] The subject-matter of this Specification is substantially the same as that described in Specification 804,361 but the claims relate to an exciter control arrangement for a direct-current generator supplying a direct-current motor, which arrangement comprises a main generator field winding, and a magnetic amplifier having output and control windings, said main field winding being supplied by means of said output windings, there being applied to a control winding of the magnetic amplifier a control signal voltage dependent upon the motor speed, and there being included a means responsive to the motor current for over-riding the effect that the speed-responsive voltage has upon the control winding.
Patent GB-658505-A (GB)
Title: Improvements relating to pipe expansion joints
IPC: F16L51/02
Filed: 1949-12-15
Abstract: 658,505. Pipe joints. POWER FLEXIBLE TUBING CO., Ltd., and MANN, J. Dec. 15, 1949, No. 32217. [Class 99(i)] The bellows 2 of an expansion joint is formed by bending one or more metal sheets into tubular form, welding the seam or seams electrically and then corrugating. The bellows is brazed to the flanges and by connections 6 to an internal telescopic tube 5. The ends of an external telescopic tube 4 are received in annular grooves in the flanges.
Patent GB-210219-A (GB)
Title: Improvements in heat distributors or economizers for use in connection with gas boiling burners and the like
IPC: F24C15/10
Filed: 1922-11-25
Abstract: 210,219. May, W. Nov. 25, 1922. Heat distributors.-A heat distributor for enabling several utensils to be heated over a single burner comprises triangular top and bottom plates a, b, the edges of the former being turned down at c and secured to the bottom plate which has a central aperture e, while the top plate is formed with three equidistant openings d arranged one in each angle of the triangle.
Patent GB-508277-A (GB)
Title: Improvements in and relating to oil-retaining bearings and the like
IPC: F16C33/14
Filed: 1937-11-24
Abstract: 508,277. Making oil-retaining bearings. SATTLER, F. Nov. 24, 1937, No. 32300. [Class 83 (ii)] In a method of forming an oil-retaining body for a bearing or bushing, the body is compressed from metallic gauze or netting, the metal remaining in a cold state throughout the process. The metallic gauze or netting may be pretreated by anodizing, galvanizing or other surface coating before compression and may be of two or more layers of gauze &c of different metals,
Patent GB-1390610-A (GB)
Title: Radiation-sensitive cuprous oxide layers
IPC: G03C1/705
Filed: 1971-07-09
Abstract: 1390610 Photo-sensitive materials KODAK Ltd 6 July 1972 [9 July 1971] 32328/71 Heading G2C A method of making a photo-sensitive material comprises the steps of (1) treating an aqueous dispersion of cuprous oxide with a compound containing a labile sulphor atom (e.g. Na 2 S 2 O 3  or thiourea) at alkaline pH between 50 and 80‹C, (2) treating with a reducing agent and (3) adjusting the pH to between 3 and 5, the steps being carried out in any order except (1) is carried out before (3) and then coating the dispersion on a support. Generally the dispersion contains a colloid such as gelatine and specified reducing agents ascorbic acid, glucose, sodium hypophosphite or sodium ascurbate. The material may be imagewise exposed and developed using sulphuric acid to give a negative metal image; the materials of the invention displaying improved speed compared with those of Specification 1306362.
Patent GB-1130672-A (GB)
Title: Electric timepiece
IPC: G04C3/10
Filed: 1967-07-14
Abstract: 1,130,672. Transistor oscillator circuits. BIVIATOR S.A. 14 July, 1967 [22 July, 1966], No. 32425/67. Heading H3T. [Also in Division G3] In an electric timepiece having a control coil and a driving coil connected into the input and output circuits respectively, of a transistor to provide a system for sustaining the oscillation of a mechanical oscillator or resonator, the driving coil 1 is connected between the emitter of the transistor 4 and one terminal of a voltage source 3, the control coil 2 is connected in series with a variable resistor 5 between the base and emitter of the transistor, and a diode 6, such as a Zener diode, is connected between the base of the transistor and said one terminal of the voltage source. The resistor 5 may be adjusted to vary the induced control current and thereby the braking effect of such current on the mechanical oscillator to adjust the amplitude of the latter. The drive current is maintained constant by the Zener diode irrespective of the adjustment of the resistor 5.
Patent GB-404436-A (GB)
Title: Improvements in bridge table suspension trays
IPC: A47B13/16
Filed: 1932-11-16
Abstract: 404,436. Suspension trays. KERN, F. E., 4906, Argyle Place, and TILTON, E. C., 4525, Lindell Avenue, both in St. Louis, Missouri, U.S.A. Nov. 16, 1932, No. 32446. [Class 52 (iii).] A tray for suspension on a card table comprises a sheet of material projecting beyond the margin of the table and held by the application of a portion of the sheet against the underside of the table and by a member extending upwardly from the sheet and freely engaging the top surface of the table ; the sheet may be spaced from the table top, and may be cut to accommodate a leg of the table. As shown in Fig. 1, the sheet 1 is cut to form a leg recess 2 between parts 3 which are bent upwards to engage the table top. Flanges 12 are provided, and a bail 7 having an arcuate portion to engage the top surface of the table is soldered, spot welded, or bolted to the sheet. The bail may be formed, alternatively, by strips struck up from the sheet and welded or riveted together, or the arcuate portion may be replaced by a straight portion ; the recess 2 may open from the side of the sheet. Fig. 4 shows a construction wherein the bail is replaced by a tongue 15 having a vertical portion 16 of V-section and a foot secured to the sheet by a rivet which also secures a clip 19 for a book of matches 20. An ash tray 14 is housed in a hole in the sheet.
Patent GB-618199-A (GB)
Title: Adjustable support, for an article of furniture
IPC: A47B91/02
Filed: 1946-11-01
Abstract: 618,199. Levelling devices for furniture. DAY, J. W. Nov. 1, 1946, No. 32448. [Class 52 (iii)] An adjustable support for the leg of an article of furniture comprises a frusto-conical rubber shoe 16 carried on its flat face by a threaded stem 14 which screws into a socket 12 secured to the article of furniture. In a modification the metal stem may have a bell-like portion which springs into a recess in the shoe.
Patent GB-1056943-A (GB)
Title: Cigarette tip
IPC: A24C5/56
Filed: 1963-10-11
Abstract: A cigarette is provided with a crimped, corrugated, embossed or fluted tip to reduce the surface area in contact with the lips and thus eliminate adherence thereto.
Patent GB-772093-A (GB)
Title: Locking arrangement for the hydraulic power lift for tractors
IPC: B60P1/02
Filed: 1954-11-10
Abstract: 772,093. Tractor power lift mechanisms. KVERNELANDS FABRIKK AKTIESELSKAP. Nov. 10, 1954 [Aug. 13, 1954], No. 32577/54. Class 79(1). In a tractor hy draulic power lift mechanism having a power cylinder 1 with pressure openings 4 uncovered by the piston 3 when the latter reaches its outer end position (i.e. as shown in Fig. 1) means are provided for the arresting the lift arms 5 in a position lower than that corresponding to the outer end position of the piston 3 whereby the openings 4 are covered by the piston 3. As shown a pair of arms 6 are interconnected and pivoted to the tractor and each carry slots 8 and 12, the slots 8 being closed by latches 9. The arms 5 carry bolts 11 adapted to co-operate with the slots 8, 12, the slots 12 corresponding to the outer end position of the piston 3 and the slots 8 to the lower position. The arms 6 are urged in a clockwise direction by a releasable spring 13. With the bolts 11 engaging the slots 8 hydraulic pressure between a pump 2 and the cylinder 1 can be utilized for operating an auxiliary device 7. Specification 745,394 is referred to.
Patent GB-208358-A (GB)
Title: Improved means for automatically regulating the supply of steam to steam heated boilers
IPC: F22B1/14
Filed: 1922-11-29
Abstract: 208,358. Bond, E., and Sumerling & Co., Ltd. Nov. 29, 1922. Fluid-actuated valves. - The supply steam to a heating-coil immersed in water to be heated is regulated by a valve B of the gate type operated by a diaphragm H acted upon by the steam pressure in heater. The valve spindle C is connected through a universal joint E to a rod J resting in the diaphragm, which is secured between the upper and lower parts of a chamber G. The lower part of the chamber is placed in communication with the steam space of the heater. The rod J is pressed against the diaphragm by a spring placed between a shoulder L on the rod and an adjustable cap M screwed on an extension of the upper part of the diaphragm chamber. When the pressure of the steam generated in the heater is sufficient to overcome the thrust of the spring, the rod J is lifted and the valve is closed.
Patent GB-813590-A (GB)
Title: Earth boring apparatus
Inventor: SELBERG JOHN PETER
IPC: E21B7/24
Filed: 1956-10-25
Abstract: 813,590. Boring earth. BORG-WARNER CORPORATION. Oct. 25, 1956, No. 32613/56. Class 85 In drilling apparatus comprising a longitudinally vibrating drill rod carrying a bit, resilient, compressible, annular chambers, on the drill rod adjacent the bit prevent generation of sound waves in the drilling mud. A drill string 23 is rotated by a table 12 driven from a draw works 11, and drilling mud from a sump 19 is pumped through pipes 18, 21, 22 and a kelly 13 to the inside of the drill string. A vibration generator (not shown) is interposed in the drill string and supports the drill rod 37 carrying the bit 39. The mud drives the generator, passes out of holes in the bit to the borehole, and is discharged from the borehole through pipe 31. The mud from the pipe passes through a screen 32 and is led by a pipe 33 back to the sump. The lowermost section of the drill rod carries units 44, 45, 46. The units 44, 45 each comprise an annular chamber 51 filled with inert gas at pressure and having a resilient wall 54 subjected to the pressure of the mud surrounding the drill rod through apertures 59 in a protecting sleeve 55. The unit 46 comprises a chamber 66 filled with inert gas at pressure and having a resilient wall 65 subjected to the pressure of the mud in the drill rod through apertures 69 and perforations 67 in a protecting sleeve 60. In a modification the lowermost section of the drill rod carries a single unit having two concentric chambers the resilient walls of which are respectively subjected to the pressure of mud inside and outside the drill rod. The chamber or chambers are located within a distance from the drill point equal to one-quarter of the wave length of the sound wave generated in the mud. Specification 632.876 is referred to. Reference has been directed by the Comptroller to Specification 699,265.
Patent GB-405431-A (GB)
Title: Improvements relating to the foot ropes of trawling nets
IPC: A01K75/06
Filed: 1932-11-18
Abstract: 405,431. Trawling. CHANT, J., Severn, Radford Park, Plymstock, Devon. Nov. 18, 1932, No. 32629. [Class 48.] Rubber ground rope rollers are grooved to enable them to be used as bobbins with larger rollers. The rollers on the bosom of the ground rope are shorter than those on the arms and are steel bushed. The ends of the bosom are held in the taper bores of shackles 5.
Patent GB-1085695-A (GB)
Title: Method for improving the velocity accuracy of a servo control system
IPC: G11B5/00
Filed: 1966-07-20
Abstract: 1,085,695. Automatic speed control. AMPEX CORPORATION. July 20, 1966 [July 21, 1965], No.32642/66. Heading G3R. In a tape recorder, a low gain servoloop is used during the recording mode, and a high gain loop during playback. During a recording operation, the speed of motor 20, which drives tape 12 through capstan 18, is regulated in accordance with signals derived from standard frequency source 28 and encoder disc 22 respectively. The signals are compared in digital unit 26, the error signal being applied to the motor through carrier suppressor circuit 30 and low frequency filter and compensation circuits 32, 34 respectively. At the same time, a control track 42 of pulses from the source 28 is recorded on the tape at the full frequency or at a derivative of the full frequency of the source. During playback the control track 42 acts as the source of tachometer signals, and the gain of the servosystem is increased by replacing the units 32, 34 by similar units 32<SP>1</SP>, 34<SP>1</SP> adapted for high frequency, together with an amplifier 38. In another arrangement, the gain increase is accomplished by reducing the inertia of flywheel 23.
Patent GB-782912-A (GB)
Title: Band for garments
Inventor: HARDIE HARRY
IPC: A41F9/02
Filed: 1954-11-11
Abstract: 782,912. Garment bands. NOBELT, Ltd. Nov. 11, 1954, No. 32664/54. Class 141. An elastic garment band 10 comprises a rubber strip 15 covered on opposite sides with separate sheaths 12, 14 of knitted textile material, the strip and sheaths being united and secured in position on the garment 11 by parallel rows of stitching 16 applied while the band is stretched.
Patent GB-1190684-A (GB)
Title: Process for Preparing Paraformaldehyde.
IPC: C08G2/08
Filed: 1968-07-09
Abstract: 1,190,684. Preparing paraformaldehyde. SOC. ITALIANA RESINE S.p.A. 9 July, 1968 [17 July, 1967], No. 32670/68. Heading C3P. Paraformaldehyde is obtained by a process comprising (a) concentrating an aqueous formaldehyde solution until it contains between 75 to 93% formaldehyde, (b) solidifying the solution to form solid discrete particles, and (c) curing the outside layer of the solid particles in the presence of a catalyst, preferably incorporated in step (b), comprising basic organic compounds of a pK b  between 2 and 6. A further catalyst component may be a basic organic substance of a pK b  between 6 and 12. Examples of the former are methylamine, trimethylamine, triethylamine, tributylamine, ethylenediamine, piperidine, and 1,4-diazo-bicyclo-[2,2, 2] octane, while examples of the latter are pyridine, p - toluidine, phenyhydrazine, hydroxylamine, aniline and trimethyldodecylammonium hydroxide. The particulate paraformaldehyde may be obtained by spraying the concentrated solution, suitably with the curing catalyst being supplied during the spraying step. The concentration step may be performed in two stages with an intermediate curing step.
Patent GB-491577-A (GB)
Title: Improvements in water-proof garments
IPC: A41D31/02
Filed: 1936-11-28
Abstract: 491,577. Waterproof garments. KLEPPER-WERKE GES. Nov. 28, 1936, No. 32688. Void. Convention date, Dec. 6, 1935. Drawings to Specification. [Class 140] Garments are made of wide-meshed fabric which is coated and impregnated with " transparent rubber." The fabric may be placed on a cloth backing during impregnation with a solution of pure rubber containing no filler, in which case the two fabrics adhere. Specification 424,766 is referred to.
Patent GB-636284-A (GB)
Title: Improvements in and relating to airspeed indicators for aircraft and to aerial spraying mechanisms controlled therefrom
IPC: G01P3/42
Filed: 1947-12-11
Abstract: 636,284. Air-speed indicators. PEST CONTROL, Ltd., and TUDOR, P. W. Dec. 11, 1947, No. 32719. [Class 97 (iii)] [Also in Group XXXVIII] An airspeed indicator for use in aircraft comprises a propeller exposed to the relative wind and a motor driving the propeller independently of the relative wind, the indicator being responsive to the reaction of the relative wind on the driven propeller. As shown in Fig. 1, the propeller 3 is driven by a constant speed motor 1 which is mounted on trunnions 2 so as to be free to rotate about the axis of the driving shaft in response to the reaction of the relative wind on the driven propeller against the restoring force of a spring 5 connected to a torque arm 4 integral with the motor casing. The air-speed may be indicated mechanically by the rotation of the motor about its shaft or, as shown, means (see Group XXXVIII) responsive to the current supplied to drive the motor may be provided. The indicator may be used to control mechanism for spraying crops (see Group XXXVIII). In another embodiment, the indicator propeller is driven by a constant torque motor so that variations in speed of rotation of the propeller due to the reaction on the propeller of the relative wind serve as a measure of the relative wind. The speed of rotation may be measured by a chronometric device of the kind described in Specification 615,487, [Group XXXVIII].