baber/WOPTO huggingface dataset:
Patent GB-1380305-A (GB)
Title: Treatment of aluminium alloys
IPC: C22F1/057
Filed: 1972-02-09
Abstract: 1380305 Heat treating aluminium-base alloys PHILCO-FORD CORP 9 Feb 1972 [22 March 1971] 5974/72 Heading C7A A precipitation hardenable Al-base alloy consisting of 3À8 to 4À9 Cu wt per cent, 1À2% to 1À8% Mg, and 0À3 to 0À9% Mn is solution treated, quenched, reheated for artificial ageing, cold worked, heated for further ageing, cold worked, finally aged again, and cooled at a rate sufficient to prevent any change in the precipitated phase. As particularly exemplified an alloy containing 4À5% Cu, 1À5% Mg, 0À6% Mn, balance Al is solution treated at 910-930‹F, quenched, and aged at 350‹-385‹F for 105 to 135 minutes before being cold worked with 15 to 25%. It is then reheated to 290‹-310‹F for 25-35 minutes, cooled, cold worked by a further 15 to 25% and finally aged at 290‹-310‹F for 35 to 45 minutes.
Patent GB-551155-A (GB)
Title: An improved process for the production of semi-stiff material and in particular articles of wearing apparel
IPC: D06M17/02
Filed: 1941-05-08
Abstract: 551,155. Compound fabrics. TRUBENISED, Ltd., (formerly TRUBENISING, Ltd)., and BIHALY, L. May 8, 1941, No. 5979. [Class 140] Semi-stiff multiply washable material or articles of wearing apparel, e.g. collars, are made by applying to a lining or backing fabric comprising elements of a cellulose derivative a plastizer in such small amounts, e.g. 45 per cent. that the material does not become sticky in room temperature, arranging the treated fabric in contact with or sandwiched between the other ply or plies, treating the assembly with a liquid which acts as a solvent for the plastizer but not for the cellulose derivative and subjecting to heat and pressure. The fabric lining may be woven or knitted and may be composed wholly or in part of cellulose acetate strands. A suitable plasticizing liquid is dibutyl tartrate dissolved in methyl or ethyl alcohol. A suitable solvent for treating the assembly is methyl alcohol or equal parts of ethyl alcohol and water. Specifications 419,208 and 466.562 are referred to. Reference has been directed by the Comptroller to Specifications 462,242, 466,562, 468,099 and 512,820.
Patent GB-304502-A (GB)
Title: Improvements in grinding or abrading machines
IPC: B24B5/18
Filed: 1928-02-25
Abstract: 304,502. Hughes, V. A. B., (Cincinnati Grinders, Inc.). Feb. 25, 1928. Centreless grinding; guides and rests. -In a centreless grinding machine the work guide makes contact with the surface of the work along a helical or other inclined line so that the points of contact become progressively nearer the grinding wheel or vary progressively in some other manner as the work is traversed axially through the machine. The machine comprises a grinding wheel 5 rotated by a belt 8 and adjustable jockey pulleys 15 from a shaft 11 and a regulating wheel 19 also rotated from the shaft 11 through gearing 25, 28, flexible shaft 30 and skew gearing 32. The shaft 20 which carries the regulating wheel is supported on a pillar 22 adjustable vertically and angularly to incline the wheel and cause it to feed the work axially through the grinding throat. Two guides are provided for the work, the front one 38 serving merely to keep the work between the wheels whilst the rear one 40 maintains it in proper relation to the grinding wheel. The guides are adjustable to and from the work by hand-operated screws 42, 44 and are mounted on slides 37, 39 carried by a bracket 36 on a slide 33 which is vertically adjustable by a rack 34 thereon and a pinion operated through gearing from a hand wheel 35. 'The guide 40 has a workengaging surface which changes progressively from the tangent 46, Fig. 3, at the commencement of the grinding operation to the tangent 47 at the termination thereof, the former being inclined to a horizontal line preferably at an angle of 58¢ ‹ whilst the latter is inclined at 39¢ ‹ so that the point of contact with the work becomes progressively nearer to the grinding wheel 5. The line of centres of the grinding and regulating wheels may be horizontal instead of vertical as shown, in which case the second guide 38 is dispensed with.
Patent GB-903161-A (GB)
Title: Method and apparatus for making formed fibrous webs
IPC: D21F9/04
Filed: 1961-02-17
Abstract: 903,161. Paper-making machines. PULP & PAPER RESEARCH INSTITUTE OF CANADA. Feb. 17, 1961 [April 22, 1960], No. 5989/61. Class 96. In an apparatus for making fibrous webs, pulp, e.g. paper pulp, is introduced through a slice 37 into a nip between a tensioned foraminous belt 22, e.g. a wire screen, and a rotating foraminous cylinder 10, and, in a first zone 1, which is supplied through a line 42 with air pressure, the pulp is compressed and water expelled both outwardly through the belt 22 to a trough 39, and inwardly as far as into the apertures 13 of the metal plate surface 12 of the cylinder 10, the fibrous web then passing to zone 2, which is pressurized by an air supply line 46 so that water is again expelled outwardly through the belt, without however, dislodging the web and belt away from the cylinder surface. The web then passes to an optional zone 3 connected to a vacuum line 50 whereby water is sucked from the web; this zone may be supplemented or replaced by an inwardly-acting pressure-chamber (not shown) located outside the cylinder and in sliding contact with the opposite side of the belt 22. Rolls 23, 25, 26, 27, 28 guide the belt 22 and one or more may drive or tension it; roll 26 preferably incorporates a suction chamber 35 to guide the formed web and both rolls 23 and 26 may be located close to the cylinder 10 to assist water expulsion by suction. The cylinder 10 has a wire mesh surface 14 and its end-plates 15, 16 have sleeves 17 (Fig. 2) which encircle a hollow stationary shaft 18 and which are journalled in bearings 19, 20 in a framework 21. Pressure-lines 42 and 46 and vacuum line 50 communicate with stationary coaxial supply pipes 43, 47 and 18, respectively. The apparatus preferably includes a pressure-box 52 to ensure transfer of the web to the belt 22, a doctor 54 to clean off web adhering to the cylinder 10, a cleaning shower 56 for the belt 22, doctors 58 to assist in water removal from the first and second zones, and an arcuate backing-plate (not shown) to control the inward flow of water in the first zone. If desired, webs from more than one unit may be superimposed on one another on the same belt to form a laminated web. The air pressure differential increases from the first zone to the third zone, e.g. from as low as <SP>1</SP>/ 10  of an atmosphere to up to as high as 5 atmospheres.
Patent GB-584926-A (GB)
Title: Improvements in or relating to means for making sealed joints with articles to be supplied with fluid under pressure
IPC: G01M3/32
Filed: 1944-03-31
Abstract: 584,926. Joint-making packing. LAWRENCE, J. W. March 31, 1944, No. 5995. [Class 122 (iii)] [Also in Group XIX] Articles to be tested are mounted in a casing carrying inflatable tubes adapted to make tight joints with the article and casing thereby providing a sealed space between the two for the reception of testing fluid. In testing a radiator block, the block 24 is supported within an open ended casing, by inflatable pneumatic tubes 3 which make tight joints with the upper and lower tube plates 25. Each of the tubes 3 is mounted between angle irons A, B, one of which is secured internally of the casing 1 and the other is detachable mounted in the outside. The tubes may be built up from rubber strips to form a tube of rectangular section subsequently vulcanised. Specification 564,592, Group XIX], is referred to.
Patent GB-525574-A (GB)
Title: An improved method of and apparatus for regulating a condition affected by variations in the rate of supply and/or demand for a fluid
IPC: G05D9/12
Filed: 1939-02-23
Abstract: 525,574. Automatic control systems. IGRANIC ELECTRIC CO., Ltd. Feb. 23, 1939, No. 6031. Convention date, Feb. 23, 1938. [Class 38 (iv)] Fluid level &c.-Correcting means controlling liquid level or any other variable condition (including temperature, pressure and calorific value) dependent upon a difference in the flow of fluid, or of energy contained in a fluid, into and out of a cistern, is operated at a relatively rapid rate when the condition passes a given maximum or miniumum tolerance value and subsequently at a slower rate until the condition is restored. Fig. 1 shows cams 19, 22, 34 each with adjustable surfaces, determining the closure period of switches 17, 20, 31 respectively and operated continuously. The actuating circuits of relays 12, 14 for energizing a motor 9 in opposite directions to move a valve 7 towards open or closed positions include the switches 17, 20 respectively and the longer period switch 31. These two circuit are selectively energized by a float-operated switch contact 26 when a maximum or minimum fluid level in a tank 5 is passed and a float 42 operates through a friction drive 45 a switch 53 so that the switch 17 or 20 is short circuited until the change in liquid level alters its trend whereupon the rate of movement of the valve 7 is reduced until the level and the switch contact 26 are restored. The Specification as open to inspection under Sect. 91 describes also a valve adjusting motor 109, Fig. 3 (Cancelled) operated through alternative circuits determined by a switch contact 123 in series with a single cam-actuated switch. The contact 123 is on a lever 124 having a roller 134 at its opposite end carried by a pin 125, acting as fulcrum, secured to a cable 126 stretched between a float 104 and a weight 131. The roller 134 runs upon a constantly moving belt so that on a rapid change in fluid level the lever turns about the pin 125 and contact is made by 123 earlier than on the occurrence of a slow change which permits the lever to move without tilting. In a modification the counter contacts 140, 141 are spring mounted and a further contact is carried by an upper extension of the lever whereby the cam-actuated switch is short-circuited to cause a rapid adjustment of the valve while rapid changes in liquid level are occurring. This subject-matter does not appear in the Specification as accepted.
Patent GB-745990-A (GB)
Title: Mechanism for automatically removing waste material from die-cut sheets of carton blanks
IPC: B26D7/18
Filed: 1954-03-02
Abstract: 745,990. Removing waste from carton blanks. FEENY, C. J. (Miehle Printing Press & Manufacturing Co.). March 2, 1954, No. 6050/54. Class 31 (1). [Also in Group XXIII] Mechanism for automatically removing waste material from sheets of carton blanks cut by means of an impression cylinder 11, Fig. 1, coacting with a reciprocating die bed 12, comprises a rotatable drum 16 carrying elements 23, Fig. 4, for engaging the sheets and picking out the waste portions therefrom, the elements 23 being selectively positioned by engaging spaced projections 19 provided on the drum. The drum is driven in timed relation to the cylinder 11 and at a substantially reduced speed with respect thereto. The elements 23 each comprise a body portion having side walls carrying waste picking spurs and adapted to engage the sides of a projection 19, one of the side walls being provided with a locking member 22, Fig. 4, adapted to interlock releasably with a recess 21 in the side of a projection 19. The elements 23 are each provided with a lip 165, Fig. 10, adapted to engage a groove between projections 19. The elements may be modified, e.g. the side walls may be provided with cutting edges for dividing a long waste portion into shorter lengths or the side walls may be formed for supporting the sheets. Coacting with the drum 16 is a grooved cylinder 43 which is adjustably mounted for varying the clearance between the cylinder and drum according to the thickness of the sheets passed between them. The die-cut sheets are each conveyed to the drum 16 by means of two sets of driven reels 65, 108, Fig. 5, and co-operating drop-down rollers 82, 82<SP>1</SP>, the reels 65 being driven at a linear speed equal to the peripheral speed of the impression roller 11 and advancing the sheets until its leading edge engages guides 106 rotatably mounted on a shaft 107 supporting the-reels 108 so that the latter are first rotated at the same speed as the reels 65 but are then gradually decelerated, by means of a gear segment 109 oscillated by a cam 116 rotating with the drum 16. The drop-down rollers 82, 82<SP>1</SP> are controlled by means of cams 101, 1011 rotating with the drum 16. The sheets are prevented from slipping as they pass between the drum 18 and cylinder 43 by means of resilient friction rings 121, Fig. 3. The waste is stripped from the spurs of the elements 23 by means of combs 123, Fig. 3, and falls into a receptacle 132, Fig. 1. A curtain 133, Fig. 1, prevents waste from falling on the die bed 12. After the waste portions are removed from a sheet of box blanks, the leading edge of the sheet is guided into the bite of chain delivery grippers of a delivery mechanism 136 which carries them to a table 137, a reciprocating carriage supporting the trailing portion of each sheet as it is carried to the table. A tool (see Group XXIII) is provided to facilitate the mounting and removal of the elements on and from the projections on the drum.
Patent GB-237186-A (GB)
Title: Improvements in gramophones and the like
IPC: G11B3/34
Filed: 1925-03-06
Abstract: 237,186. Griffith, L. D. March 6, 1925. Tone-arm joints; tone-arms, resiliently supporting.-The sound-box S is connected to the tone-arm C by a sleeve A of rubber or other pliable material which increases in thickness from the centre to each end and is fitted with one or more metal bands B. The tone-arm is partially supported by an elastic band K extending between supports V and on which the tone-arm rests during playing.
Patent GB-577984-A (GB)
Title: Improvements in or relating to the production and esterification of esterifiable nitroparaffin derivatives
IPC: C07C205/15
Filed: 1943-04-16
Abstract: The methylolation of nitroparaffins by means of formaldehyde or paraformaldehyde is effected in the presence of a polyhydric alcohol. A basic catalyst may be used such as potassium hydroxide or carbonate.  The resulting mixture, after neutralization and filtration may be directly esterified, e.g. by acetylation or nitration.  In examples, trimethylolnitromethane in admixture with glycerine is obtained by dissolving potassium hydroxide in glycerine and heating with paraformaldehyde.  In other examples, ethyleneglycol and a commercial mixture of nitroparaffins are used as components. The following products are also mentioned: monomethylolnitromethane, monomethyloldimethylnitromethane, dimethylolnitromethane and dimethylolnitroethane.
Patent GB-491384-A (GB)
Title: Improvements in or relating to electro-acoustic devices
IPC: H04R9/06
Filed: 1937-03-02
Abstract: 491,384. Loud-speakers. PARMEKO, Ltd., and MEE, S. N. S. March 2, 1937, No. 6149. [Class 40 (iv)] In a moving-coil electro-acoustic device furnished with locating means constructed and arranged in such a manner that when the diaphragm unit is applied to the casing or housing which accommodates the magnet system the unit is located with the actuating or moving- coil correctly centred in the magnetic air gap holes are provided in the diaphragm unit for the reception of pins, pegs or the equivalent formed on the housing or casing or vice versa. The diaphragm 7, which is conical, is peripherally attached to a flange 11 held between rings 9, 10 of insulating material forming an annulus 8 having a plurality of holes 15, cooperating with pins 16 threaded into a recess 14 of the housing 1 and adapted to centre the coil 12 in the gap a when the diaphragm unit is applied to the housing. The annulus 8 of the diaphragm assembly rests on a ring 17 of felt and a felt or other packing ring 28 may be included between the annulus 8 and the nose piece 3 formed with a throat opening 4 for a horn. Contact plates 21 of nickel which are attached to the annulus 8 by rivets 22, have bent portions accommodated in recesses 23 in the housing and engaged by the screws 27 of terminals 26. Felt-covered discs 24 insulate the plates 21 from the housing and the ends of the coil are connected by wires 25 to the rivets 22.
Patent GB-384304-A (GB)
Title: Improvements in the reduction of indigo
IPC: C09B67/28
Filed: 1931-02-27
Abstract: Leuco compounds of vat dyes are obtained by reducing an aqueous suspension of the dye with zinc hydrosulphite, which may be formed in situ from zinc and sulphur dioxide or a sulphite.  The process is preferably carried out by adding, to a neutral or slightly acid suspension of the dye, rather more zinc than is theoretically necessary to produce the zinc hydrosulphite required for the reduction, and then adding sulphur dioxide in much smaller amount than that theoretically required.  The sulphur dioxide reacts with some of the zinc to form zinc hydrosulphite, which reacts with the dye to form the leuco compound and zinc bisulphite.  By adding sulphuric acid continuously or in separate portions, the zinc bisulphite is converted into sulphate with liberation of sulphur dioxide, which reacts with a further portion of the zinc to form zinc hydrosulphite.  Examples are given of the reduction of indigo, pyranthrone and flavanthrone by this process, zinc chloride, ammonium chloride, hydrochloric acid or sulphuric acid being added, in some instances, to the suspension of the dyestuff to render the latter slightly acid.
Patent GB-144774-A (GB)
Title: Improvements in or relating to apparatus for the propulsion of vehicles and like purposes
IPC: B62D57/02
Filed: 1919-03-13
Abstract: 144,774. Webster, E. Bullock-. March 13, 1919. Tractors.-Tractors are constructed with the lower edges of the front wheels close together so that they will run in a furrow while the planes of the wheels diverge outwards and upwards and the wheels themselves or walking attachments mounted on the axles are driven from a motor arranged between the wheels. The axles of the front driving-wheels 1, Figs. 1 and 3, are carried in bearings in the engine frame 3 which has an arched extension 6 carrying a pillar 5 adapted to form the swivel connexion between the engine framework and an inverted U-shaped framework 4 carrying the wheels 19. The engine frame and wheels 1 are turned relatively to the frame 4 for steering by means of a tiller 9 which is freely pivoted at the centre of the pillar 5 and is adapted to engage notches in a turntable 7 fixed to the pillar 5. The frame carrying the wheels 19 is pivoted at the point 12 to the framework 4 and is adjustable relatively thereto in a vertical plane bv means of a lever 14 and sector 16. The distance between the wheels 19 is adjustable. The pillar 5 is relieved from undue strain by guides, curved in plan, on the engine framework working in similar segments carried on the framework 4. The axles are driven from the engine crank-shaft through worm gearing 24, 25, 26 and chains 27, 28. The axles also drive walking attachments for each wheel shown also in Fig. 4. Vertical propelling-levers 40, 41 are jointed to links 43, 49 which are also connected to one another by the link 48. The pivots 44 of the two links 43 are connected to a lever 55 with cam-surfaces 54 which is rocked about a pin 46 or the framework by pins 53 on a rotating member driven by the axle. Pins 51 on an intermediate part of the links 49 are reciprocated in a more or less horizontal direction by engaging in cam-grooves 52 also formed on the rotating member.
Patent GB-787943-A (GB)
Title: Unidirectional waveguide attenuator
Inventor: THOMPSON GEORGE HORACE BROOKE
IPC: H01P1/365
Filed: 1956-03-01
Abstract: 787,943. Waveguide accessories. STANDARD TELEPHONES & CABLES, Ltd. March 1, 1956, No. 6416/56. Class 40 (8). A non-reciprocal waveguide attenuator (an " isolator ") coinprises a body 2 of ferromagnetic ceramic, e.g. nickel-zinc or aluminium ferrite, positioned in a waveguide 1 and subject to a non-uniform magnetic field. The non-reciprocal attenuation effect is produced by gyromagnetic resonance within the ferrite material the frequency at which resonance occurs being a function of the magnetic field strength. The effect of a non-uniform field is, therefore, to broaden the band of frequency over which the attenuator is effective. Since the magnetization varies with temperature the invention also reduces dependence of response of the isolator upon temperature. The ferrite plate 2 is supported by a dielectric plate (not shown) in a position parallel to and offset from the axis of the guide 1. The pole pieces 6, 7 of the C-shaped magnet NS are shaped as shown to provide the required variation of magnetic field within the plate 2. An alternative method of non-uniform magnetization consists in providing a number of magnets of different strengths. The pole pieces may be non-uniformly spaced and may be stepped as shown. Instead of steps the pole pieces may be provided with inclined surfaces. The permanent magnets may be replaced by solenoids. The invention may be applied to the type of isolator in which an axial magnetic field is impressed upon a cylindrical element of ferrite material arranged coaxially within a circular waveguide. In this case a number of magnets or solenoids, each providing a different strength, are arranged side by side surrounding the waveguide.
Patent GB-279375-A (GB)
Title: Improvements in or relating to the manufacture and use of carbon papers and like transfer materials
IPC: B41M5/10
Filed: 1927-03-08
Abstract: 279,375. Peltzer & Co., F. Oct. 23, 1926, [Convention date]. Carbon papers and like transfer materials.- Carbon and like papers are manufactured cheaply by applying a very thin film of coating-material to the paper, the weight of the film being less than 25 per cent and preferably greater than 10 per cent of the weight of the paper, and the weight of the paper being preferably not greater than 18 grams per square metre. To permit of application of the film, the usual coating-material is thinned and is applied at a temperature of from 80‹ to 100‹ C., suitable thinning-agents being stearic acid, carnauba wax, bleached montan wax, fatty acids, neutral fats, waxes, or liquid or solid hydrocarbons. The carbon paper, heing cheap, need not be used more than once and can therefore be permanently attached to the original and duplicate sheets, attachment being preferably effected by means of adhesive, staples, or fasteners, during manufacture of the paper.