baber/WOPTO huggingface dataset:
Patent GB-1224186-A (GB)
Title: Inflatable tubular structures and method of producing same
Inventor: CAYRE ALEXANDRE JOSEPH
IPC: F16L11/12
Filed: 1968-04-09
Abstract: 1,224,186. Inflatable craft. R.F.D. GO Ltd. 9 July, 1969 [9 April, 1968], No. 16969/68. Heading B7A. [Also in Divisions B8 and F2] An inflatable non-rectilinear tubular structure, e.g. a toroidal buoyancy chamber 11, is formed by winding a shaped length of material 12 (e.g. rubberized fabric) in spiral formation along the intended axis of the structure under production, and joining the various turns of the spiral formation to one another at their respective side edges by a principal seam 13 which thereby also extends in spiral manner along said axis. The seam may be formed by abutting the appropriate edges and sticking a sealing strip over them, or by overlapping the edges and sticking or welding them together. Production of a template for the shaped length of material is described. In a second embodiment the structure is polygonal in shape.
Patent GB-398307-A (GB)
Title: Improvements in variable focus lenses
IPC: G02B15/04
Filed: 1932-06-16
Abstract: 398,307. Lenses. WARMISHAM, A., 1625, Hinman Avenue, Evanston, Illinois, U.S.A. and KAPELLA, Ltd., 104, Stoughton Street, Leicester. June 16, 1932, No. 17000. [Class 97 (i).] A variable-focus lens comprises three members A, B, C, the members A, C both being dispersive and the member B collective. The focal length is varied by varying the separation of the members, the members A, C being moved simultaneously towards or away from the member B. In order to increase the focal length and at the same time maintain a fixed focal plane for an object at a given distance, the member B is moved away from the said plane and at the same time the members A, C are moved towards the member B. Preferably the member A comprises two separated components to facilitate simultaneous correction of astigmatism and distortion at the short focal lengths, and spherical aberration at the long focal lengths, and at least one of these components is compounded to render the member achromatic. To minimize aberrations of this member, both its components are preferably dispersive, one being a meniscus with its concavity facing the member B. The member C is compounded for achromatism and its cemented surface is collective to facilitate simultaneous correction of field aberrations at short focal lengths and axial spherical aberration at long. focal lengths. To facilitate correction of field aberrations at short focal lengths this member is made meniscusshaped with its concavity towards the member B. When the system is provided with mechanical means by which the movements of the members take place at rates suitable to an object at a given distance, it may be adapted for an object at a different distance by providing a supplementary lens E producing a virtual image at the said given distance from the system. Numerical data are given for the example shown having a minimum focal length of 1.61 with the members in the positions shown in dotted lines, and a maximum focal length of 5.78 with the members in the full line positions, the position of the focal plane being the same in each case.
Patent GB-842199-A (GB)
Title: Improvements in or relating to tuner devices for radio receivers
IPC: H03G1/02
Filed: 1958-05-28
Abstract: 842,199. Radio receiving sets: semi-conductor circuits. GENERAL MOTORS CORPORATION. May 28, 1958 [June 5, 1957] No. 17001/58. Classes 40(5) and 40(6). [Also in Group XXXV] A radio receiver is tuned by manual variation of the magnetic bias in the core of at least one inductor by current from a varistor bridge regulating circuit. The Figure shows a receiver for operation from the battery of a road vehicle in which the voltage regulator and controls may be located either within the receiver or, as shown, in a remote control unit 132. The radio frequency amplifier 27, mixer 56 and local oscillator 94 are each tuned by coils 18 wound on cores 26 in which the flux is varied by control of current in magnetizing windings 36 by a potentiometer 172. Each coil 18 is wound over a split core section to eliminate hum from the magnetizing coil. The aerial circuit is coupled to the radio frequency amplifier via a split secondary winding 25 and thence via a common impedance coupling formed by capacitors 62, 58 and the tuned circuit 52, 60, 46 to the mixer. The local oscillator 96 is coupled to the mixer by a split secondary winding 84, capacitor 114 and resistor 74. The vehicle battery is connected by terminal 140 and an on/off switch 144 to a voltage regulating bridge formed by resistors 154, 156 and varistors 158, 160. The resistance of the varistors falls with increasing voltage hence voltage variation across the centre points of the bridge is minimized. Further stabilization is provided by a resistor 162 feeding a silicon Zener diode 164 across which the potentiometer 172 and coils 36 provide a relatively constant load. The magnetizing current is indicated on a milliammeter 138 calibrated in frequency. It is stated that variation in the supply voltage from 11 to 18 volts results in a variation of less than ¢ volt across the diode 164. A remote volume control 178 is provided.
Patent GB-273335-A (GB)
Title: Improved magnetic core for electrical machines
IPC: H02K1/18
Filed: 1927-06-27
Abstract: 273,335. Constructions Electriques de Belgique. June 26, 1926, [Convention date]. Cores; armatures and field magnets, cooling.- The core laminations of the rotor or stator of a dynamo are furnished with a number of projections to increase the cooling-surface. Fig. 3 shows the invention as applied to a rotor. It is built up of a number of sector-shaped laminations 8 arranged as shown so as to break joint. Each lamina is formed with three projections on its inner edge. Two of these projections, 11, are arranged symmetrically and are pierced with holes for the connecting bolts. The other, 12, is formed near one end of the lamina, so that the corresponding projection of the next lamina appears at 13. The third lamina is placed with the other face upwards, so that its asymmetric projection appears at 15 and that of the fourth at 14 and so on.
Patent GB-1422978-A (GB)
Title: Apparatus for electrostatically applying loose particles on  to a surface to be coated
IPC: B05B5/057
Filed: 1973-04-10
Abstract: 1422978 Electrostatic coating apparatus; spray producers H JAGER 10 April 1973 [19 April 1972] 17164/73 Headings B2F and B2L Apparatus for electrostatically applying powder to a surface comprises an insulated container 11 for the powder, attached to an insulating handle 13 the container having an electrode 17 for charging the powder and the handle having vibrating means 41 to provide the powder with an initial acceleration to place it in the electrostatic field. The vibrator, which may be mounted additionally or alternatively on the container 11 comprises an electromagnet with poles 42, 43 which vibrate a plate 45. The electromagnet is adjustable to vary the amplitude of vibrations. An earthing switch which can be brought into contact with a plate 19 and hence earth electrode 17 comprises a spring urged rod 25 which can be locked as shown in Fig. I or can be released to contact plate 19. In a modification the container 11 is divided into two parts one acting as a supply hopper which feeds powder through an adjustable gap to a discharge chamber.
Patent GB-1432978-A (GB)
IPC: D04H1/559
Filed: 1973-04-10
Abstract: 1432978 Laminates UMA SEISHI KK 10 April 1973 17271/73 Heading B5N [Also in Divisions D1 and A5] A disposable non-woven filamentary structure suitable for use in the production of napkins comprises (A) a dry-formed web having a weight of not more than 60 grams per square metre and consisting of 30-100% by weight of polyolefin staple fibres and 0-70% by weight of cellulosic staple fibres, and (B) a wet-formed web having a weight of not more than 30 grams per square metre and consisting of 0-50% by weight of polyolefin staple fibres and 50-100% by weight of cellulosic staple fibres, the wetformed web being bonded by means of less than 15% by weight based on the total weight of staple fibres contained therein of a binder, and the webs (A) and (B) being bonded together by means of the fused portions of the polyolefin staple fibres contained in the webs, the fused portions being disposed in spaced relation from each other so that the area of diffusion of the structure measured by a test, details of which are given, is not greater than 1À0 square centimetre. The dry-formed web A which may be produced on a carding machine may be such that the staple fibres thereof are anisotropically oriented, the fused portions being formed in spaced relations from each other in a direction traversing the anisotropic orientation. The polyolefin fibres may be of polypropylene, polyethylene or ethylene-propylene copolymers, the cellulosic fibres may be cotton, bast fibres, wood pulp, kapok, viscose rayon or cellulose acetate rayon and the binder in the wet-formed web may be water-soluble polyvinyl alcohol or ethylene-vinyl acetate copolymer in the form of fibres. The structure may comprise a plurality of the webs (A) and (B). Bonding may be effected by passing superposed webs (A) and (B) between a hot embossing roll and a woollen paper roll comprising wool wound tightly on to a roll or paper, with web (B) in contact with the hot roll.
Patent GB-183338-A (GB)
Title: Improvements in or relating to butchers' slaughtering apparatus
IPC: A22B1/00
Filed: 1921-06-24
Abstract: 183,338. Woodhead, A. June 24, 1921. Chain stops and holders.-A chain stop or holder for use with chains used in tethering animals for slaughtering comprises a fixed block A having a cylindrical guide B for the chain and a pivoted reversible arm C adapted to abut against one side or the other of a stop b, in which position a pawl c on the arm enters a link of the chain and stops movement of the chain in one direction. To stop movement of the chain in the opposite direction the arm C is reversed on its pivot, afterwhich it can engage the other side of the stop b. The pawl can be prevented from engaging thechain by a pivoted arm D, which can be turned over to move the arm C into the position shown, in broken lines. Specification 134,881 is referred to.
Patent GB-403648-A (GB)
Title: Improvements in or relating to solid gelled non-drying vegetable oils and compositions containing them
Filed: 1932-06-18
Abstract: Solid gelled oils are prepared by heating non-drying vegetable oils with an oxygen-containing gas at 140 DEG  to 200 DEG  C. and subsequently working the product with or without solvents.  A stream of air is passed through castor, blown cotton seed or olive oil, heated at 155 DEG  C.  The stiff-jelly thus produced is passed through a mill together with a solvent such as toluol, benzene, acetone, ethyl acetate, turpentine to form a homogeneous dispersion or solution.  A paint is formed by mixing the solution thus obtained with a cellulose derivative such as nitro-cellulose, together with camphor, ester gum or other resins, pigments, such as carbon black drying oils and solvents such as methylated spirits, ethylene glycol ethylether, cyclohexanol, or mineral oils.  The paint may be applied to metal or wood surfaces, to a fabric to form leather cloth.ALSO:Solid gelled oils suitable for use in making plastic compositions, are made by heating nondrying vegetable oils such as castor oil, blown cotton seed oil or olive oil, with an oxygen-containing gas at 140 DEG  to 200 DEG  C. and subsequently working the product for example in a roller mill.  Solvents such as turpentine, benzene, acetone, toluol or ethyl acetate may be incorporated during the milling process.  The products thus obtained may be mixed with cellulose derivatives such as nitro-cellulose, ester gum or other resin, camphor, pigments such as carbon black and drying oils.  Solvents such as methylated spirits, ethylene glycol ethyl ether, cyclohexanol and mineral oil may be added.
Patent GB-980256-A (GB)
Title: Improvements in or relating to electrolytic condensers for use in alternating current circuits
Inventor: ROGERS JAMES PERCIVAL
IPC: H01G9/04
Filed: 1960-05-17
Abstract: 980,256. Capacitors. PLESSEY CO. Ltd. May 16, 1961 [May 17, 1960], No. 17368/60. Drawings to Specification. Heading H1M. An electrolytic capacitor comprises aluminium anode and cathode plates which may be rolled together with a fibrous intermediate foil for immersion in a high-conductivity electrolyte composed of an aqueous solution of one or more chemically weak acids, e.g. acetic or citric acid, the anode and, if required, the cathode, being chemically or electrochemically polished to a mirror finish and electrolytically formed with an oxide film without formation of an atmospherically produced oxide film. The plates may be polished by treating with a mixture of 70% phosphoric acid, 10% nitric acid and 20% sulphuric acid all concentrated; or with a mixture of 25% acetic anhydride and 75% concentrated perchloric acid at 60-85‹ C.; or with a hot mixture of 70% orthophosphoric acid, 25% sulphuric acid and 5% nitric acid all concentrated at 100-110‹C.; or with a mixture of 7-19% ammonium bifluoride 8-18% of concentrated nitric acid, 1-5% dextrine, and water to 100% at 70‹ C. Alternatively the plates may be polished by D.C. electrolysis in a mixture of perchloric acid and acetic anhydride, sodium carbonate and trisodium phosphate; or sulphuric acid, nitric acid, and orthophosphoric acid all concentrated with stainless steel cathode. Two plates may be polished simultaneously by A.C. electrolysis between the plates in an electrolyte as above. Foil plates may be continuously polished and electrolytically oxidized without formation of atmospheric oxide by drawing a length of foil through the polishing bath and the electrolytic oxidation bath in a submerged condition throughout the process. Specification 901,793 is referred to.
Patent GB-205539-A (GB)
Title: Improvements in clips
IPC: F16L33/04
Filed: 1923-01-25
Abstract: 205,539. Wyld, H. W. Jan. 25, 1923. Clips, hand.-The closurepiece 2 of a band clip 1 is curved in cross-section and tapers in thickness at both ends. The part of the clip against which the closurepiece bears is correspondingly curved to accommodate the closure-piece in an even manner and thus present a continuous surface to the article gripped.
Patent GB-660179-A (GB)
Title: Improvements in and relating to magnetic amplifiers
IPC: H03F9/02
Filed: 1949-07-02
Abstract: 660179. Magnetic amplifiers. CZECHOSLOVAK METAL & ENGINEERING WORKS, NATIONAL CORPORATION, and VOTRUBA, K. July 2, 1949 [July 3, 1948], No. 17545/49. Class 40 (iv). A magnetic amplifier for A.C. comprises two similar coils M1, M2, whose primaries are in series aiding and secondaries in series opposition, the primaries being fed with the input A.C. VI in parallel with a D.C. supply Vs  saturating the cores, and the secondaries are fed with an A.C. of higher frequency Vp, the resultant modulated secondary current being demodulated by rectifiers U1-U4 and applied to the load R2. The input A.C. is isolated from the D.C. by a tuned transformer T1, C1. The higher frequency A.C. component is removed from the output by a filter L, C2, C3.
Patent GB-182782-A (GB)
Title: Improvements relating to the welding of wires particularly for resistances
IPC: H01C1/14
Filed: 1922-06-26
Abstract: 182,782. Waller, A. E. July 6, 1921, [Convention date]. Welding; joints. - Wires, particularly for electric resistances, are joined by adding auxiliary metal to the joint and passing a current therethrough to weld the parts together. A resistance wire 2, 2<1> preferably braided and consisting of German silver, which is to be wound on a porcelain tube and then covered with a laver of insulating material such as vitreous enamel, Figs. 4 and 5 is first passed through a V-shaped bent clip 5 of iron or other high resistance metal together with a braided copper leading wire 4, 4<1>. The wires may be twisted together prior to insertion in the clip. The clip and wires are then welded together by a pair of pressure electrodes 6. The resistance wire is then coiled round the porcelain tube and similarly welded at the other end. It is securely held on the tube by carrying the loose ends 2<1>, 4<1> of the two wires over a groove in the end thereof and twisting them together at 7. The tube is then covered with vitreous enamel &c. so as to enclose the joint. In a modification, Fig. 6, the resistance wire forms its own lead, the end of the wire being looped and welded in the manner previously described to the body of the wire. To secure the wire to the tube, the loop is then arranged over the groove in the end thereof and then twisted as shown to tighten the parts together. The enamel coating is then applied and connection to the circuit is made by way of the small loops shown.
Patent GB-918849-A (GB)
Title: Process for preparing polyethylene and co-polymers of ethylene
IPC: C08F10/02
Filed: 1959-05-22
Abstract: Polyethylene or a copolymer thereof with another olefinic hydrocarbon is prepared by polymerizing at below 100 atmospheres using a catalyst formed by reducing titanium tetrahalogenide with from 0,5 to 1 mole of dialkyl aluminium hydride per mole of titanium tetrahalogenide and by adding further titanium tetrahalogenide to the reaction product. Titanium tetrachloride, diethyl, dipropyl, disobutyl, dihexyl and dioctyl aluminium hydride are specified catalyst ingredients.  The additional titanium salt may be added before or after the olefin mixture and the process may be continuous.  The polymerization may take place in an inert liquid medium, e.g. hexane, heptane, cyclohexane, gasoline, kerosine, benzene, toluene, chlorobenzene, and mineral oil fractions.
Patent GB-443678-A (GB)
Title: Improvements in pneumatic vehicle wheel tyres having an axially elongated cross-section
IPC: B60C11/22
Filed: 1935-06-19
Abstract: 443,678. Pneumatic tyres. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. June 19, 1935, Nos. 17626, 17627, and 17628. Convention dates, June 19, 1934, April 19, 1935, and May 23, 1935. [Class 144 (ii)] A wide-section pneumatic tyre comprises a series of axially-spaced ordinary pneumatic tyres, each comprising an outer cover 1 and tube 4, connected to a common tread 6 through supporting-bands 5 which extend partially down the side-walls of the covers 1. The bands 5 may be formed integrally with the tread. The spaces between the covers 1 may be inflated, preferably to a pressure lower than that of the tubes 4, and as shown in Fig. 5, air-tubes 14 may be fitted in these spaces. The tubes 4 may be inflated through separate valves ; or, as shown, through a common valve 12 on a conduit 11 having branches leading to the tubes. The tubes 14 (or the spaces) may also be inflated through the valve 12 ; and, if graded pressures are to be used, a reducing- valve 18 may be fitted to the conduit 17 serving the tubes 14. Preferably, the covers 1 have uniform bead-diameters to fit a cylindrical rim 2 on which they are spaced by rings or segments 7. The actual tread surface may be flat (Fig. 1), or curved or otherwise profiled (Figs. 5 and 6) for adaptation to the cambered road surface, or to render the composite tyre adjustably responsive to varying loads.
Patent GB-292489-A (GB)
Title: Improvements in or relating to mariners' or like compasses
IPC: G01C17/00
Filed: 1928-06-18
Abstract: 292,489. Vion, E. June 18, 1927, [Convention date]. Mariners' and aeronautical compasses.-In a compass particularly intended for aircraft the card is provided with graduations around its rim and on its lower face and the bowl has a transparent periphery and a transparent base so that the card can be read either from the side or from below. The Figures show a liquid compass having a card of L- section which is graduated on its surfaces A, A<1>, and is carried by a float B with a. pivot b bearing in a support C. The bowl comprises a transparent base D and a transparent cylindrical part E mounted between rings f, f<4> which are connected by strips f<3>. The base D is mounted in the ring f by means of a ring f<1> and washer f<2>. Mounted on the ring f<4> is a cover G having a flexible upper surface g' to allow for expansion of the liquid, and a domed lower surface g<1> with apertures g<2> for the escape of air bubbles. The ring f carries lubber lines H, H' for use with the scales on the surfaces A, A' respectively, and is adjustably mounted in a ring I provided with a scale to allow the bowl to be. set at a desired azimuth relatively to the ring. The ring I is secured to the aircraft &c. by an arm J and support K and may carry an illuminating device comprising a lamp L mounted in a tube L'. A reflecting prism &c. M pivoted at J<1> on the arm J facilitates observation of the card from below. The arm J is connected by rubber buffers &c. N to the support K having holes by which it can be secured within the wing &c. of the aircraft. The support K also carries the case P in which the compensators are mounted, this case being mounted on a plate 0 pivoted at K<1> to the support K and capable of being clamped by a screw K<2>. To secure the case P in its operative position a pin O<1> carried by a ring O<3> operated by a plunger O<5> is adapted to pass through a hole O<2> in the plate O into an aperture K<4> in the support K. The compass may be mounted within one of the wings of the aircraft, an aperture being provided in the lower surface of the wing through which the compass projects downwards, and a pivoted shutter being provided in the upper surface to permit access to the compensators &c.
Patent GB-273760-A (GB)
Title: Improvements in piston engines, particularly internal combustion engines
IPC: F02B75/28
Filed: 1927-07-02
Abstract: 273,760. Lind, E. July 3, 1926, [Convention date]. Balancing moving parts by weights.- A composite double-acting piston b<1>, b<2> drives shafts l through hypocycloidal gear consisting of two fixed internallytoothed wheels f and pinions e, the diameter of each pinion being half that of the wheels. The spindle of each pinion is carried by an arm on the shaft, and is driven from the piston through a gudgeon working in slots in the cylinder and a connecting rod k. Working with each pinion e is a second pinion h of the same diameter as the pinion e, and rolling in an internally-toothed wheel i. The Specification as open to inspection under Sect. 91 (3) (a) also describes a modification wherein the piston is made in two widely separated parts connected by a piston rod; this carries a gudgeon equivalent to the gudgeon d' on the piston b<1>, b<2>, and driving on to hypocycloidal gear placed within the cylinder. The pinions. h may carry balance weights. This subject-matter does not appear in the Specification as accepted.
Patent GB-1192283-A (GB)
Title: Improvements in and relating to Main Landing Gear for Aircraft
Inventor: FEHRING WENDELL BECKWITH
IPC: B64C25/34
Filed: 1968-04-11
Abstract: 1,192,283. Aircraft undercarriages. BOEING CO. 11 April, 1968 [14 April, 1967], No. 17641/68. Heading B7G. An aircraft with wings and a fuselage (and may be a nose undercarriage 15) has a main undercarriage comprising symmetrically on each side of the aircraft fore-aft centre plane a unit 11, 14 forward and outboard of another unit 12, 13 (which may be steerable to avoid tirescrub) each unit including an oleo leg. The units 11 to 15 may have wheels, pontoons skis or skids.