baber/WOPTO huggingface dataset:
Patent GB-1412284-A (GB)
Title: Control systems
IPC: B21B37/62
Filed: 1972-10-24
Abstract: 1412284 Automatic position control MOOG Inc 24 Oct 1972 [26 Oct 1971] 48911/72 Heading G3N In a servo-control system, a load (screwdown of rollers 23, 24) is positioned at a controlled velocity proportional to the magnitude of a command signal on lead 67, and, in response to the attainment of the value zero for the command signal, a position holding control loop is activated to maintain the load's position, the rotor phase of resolver 75 being maintained at substantially zero, any deviation therefrom providing a command signal to the servo-control. As shown, the command signal is provided either manually 65, 66, or pre-, and post-rolling thickness sensors 51, 52 of material being rolled provide signals to auto gauge control 55 receiving also a pre-set signal and providing to amplifier 58 itself providing the command signal, downstream, and anticipation trim signals. The command signal is combined with a signal from tachometer 69 representing the actual velocity of screwdown actuator members 36, 38, the resultant, via integrating amplifier 48, controlling torque motor winding 46, the motor controlling electrohydraulic servovalve 41, the flow in leads 44, 45 being proportional to the signal on line 50. Position control. Should the command signal be zero for at least a predetermined interval, null detector 85, together with a zero of resolver phase detected by unit 86 enables flip-flop 88 to change state, frequency dividing command counter 84 in combination with one shot 90 providing short-lived sampling control pulses at a frequency corresponding to the resolver supply frequency from frequency dividing reference counter 83. The sampling control pulses, representing a reference phase, control sampling demodulator 91, capacitor 133 ensuring that there is provided on lead 130 coupled to amplifier 48 a D.C. signal representing in magnitude and sign the deviation of the resolver rotor phase from zero, any such deviation resulting in a restoring force being exerted by actuator 34. The system may be used to control a grinding element, a drill, a short cylinder in a die casting machine, or injectant piston of a plastics parison forming injection moulding machine, or load positioning, the movable part having a manually selected feed rate to a held position.
Patent GB-1280359-A (GB)
Title: Glass composition and method of production thereof
IPC: C03C4/08
Filed: 1969-10-07
Abstract: 1280359 U-V absorbent pink glass NIPPON KOGAKU KK 7 Oct 1969 [8 Oct 1968] 49184/69 Heading C1M [Also in Division G2] An ultra-violet absorbent pink optical glass, which may be used.as a filter in colour photography, consists of, in weight per cent: SiO 2  43-73 B 2 O 3  0-6 Al 2 O 3  0-3 R 2 O 5-20 R<SP>1</SP>O 0-5 PbO 20-37 Sb 2 O 3  and/or Bi 2 O 3  0-1 SnO and/or SnO 2  0À1-1 CeO 2  0À5-5 Au 0À005-0À05 where R is one or more alkali metals, and R<SP>1</SP> is one or more bivalent metals other than Sn or Pb. The glass has an absorption peak wavelength of about 550 mÁ and an ultraviolet absorption limit within the range 380-400 mÁ. The glass may be formed by heating a suitable batch to 1350-1500‹ C., cooling at from 10‹ C./h. to 25‹ C./h. to room temperature, and reheating to a temperature in the vicinity of the softening point for 5 to 50 hours.
Patent GB-1171489-A (GB)
Title: Stabilizing Knitted Tubular Fabrics
Inventor: ARONOFF EDWARD ISRAEL
IPC: D06C7/02
Filed: 1967-10-30
Abstract: 1,171,489. Textile treating apparatus; folding fabrics. E. I. ARONOFF. 30 Oct., 1967 [22 May, 1967], No. 49235/67. Headings D1L and D1S. Apparatus for steaming tubular fabrics comprises a housing 22 enclosing a steam chamber 32 and a suction chamber 34 separated therefrom by a wall 40, said suction chamber being in communication with the steam chamber, e.g. via slots 41, 43, to permit the exhaust thereof, the housing having opposed vertical walls 23, 24, each provided with a slot 29, 30 to permit passage of the tubular fabric in flattened condition through the steam chamber, there being means 36, 38 in the steam chamber and at least on one side of the fabric for applying steam thereto, and heating units, e.g. closed steam pipes 42, in the housing. As shown in Fig. 4 the steam unit 36 comprises a semicylindrical tube 44 closed at each end and having a corrugated face 50 provided with perforations 52. Longitudinal perforated pipes 54, 56 are connected to a live steam source, and perforated pipes 62, 64 act as steam traps (see Fig. 5, not shown). Unit 38 is constructed likewise. Spent steam is exhausted via slots 41, 43 through duct 72. The fabric is subsequently expanded by an internal former and passed under controlled tension to further steaming chambers D while sandwiched between driven, steampermeable bolts 96, 98. Chambers D are constructed on the same principle as chambers A. Enclosures 152, 154 are mirror images of each other. Enclosure 154 has a curved passage 162 whose lower wall 170 is extensively perforated and whose upper wall 164 has longitudinal slots 176. Steam is provided by perforated pipes 178, is sucked through the fabric into chamber 177 and is thence exhausted. Closed steam pipes 182 act as heaters (see Fig. 8, not shown). A folding table F comprises a horizontally reciprocating table 206 and a fabric feeder 212. The feeder is adapted for vertical movement via bracket 214 which is journalled to a lift member 204. Said member includes a ratchetcontrolled pinion (224) which is intermittently rotated by engagement with a rack gear (230) underneath the table. The pinion is on the end of a screw (222) which carries a threaded bush (234) connected to the bracket 214. The screw rotates intermittently unidirectionally causing the bush, and thus the whole feeder to rise as fabric is fed (see Figs. 9 and 10, not shown).
Patent GB-1191329-A (GB)
Title: Improvements in or relating to Anti-lock Brake System
Inventor: SHARP DENIS
IPC: B60T8/34
Filed: 1967-11-01
Abstract: 1,191,329. Anti-skid hydraulic brakes. MULLARD Ltd. 29 Aug., 1968 [1 Nov., 1967], No. 49705/67. Heading F2F. In an anti-skid braking control system for a wheeled vehicle a movable anti-lock control element in the form of a piston P is adapted to be moved longitudinally by means of an auxiliary control element C under the influence of a spring S1 and an anti-lock control force F to operate a valve V controlling the flow of hydraulic fluid from a master cylinder to the brake cylinders, a damper element D being provided to cause the control element P to travel at an independent rate during each period of anti-lock action and to intercept the control element during its brake re-application movement. The damper element D is provided with an orifice 01 which is opened at all times and a second orifice 02 which is closed by the control element P when the latter meets the damper piston during brake re-application. Whenever wheel locking occurs, the anti-lock control force F is applied to the element C and the piston P is moved to the right to close the valve V, further movement of the piston P which separates from the valve element V then displaces fluid from the brake to release the latter. Consequent removal of the force F allows the spring S1 to force the fluid back into the brake and open the valve V. When the force F is removed the spring 51 forces the piston P back to the left rapidly until the rim seal valve on the piston P contacts the damper piston D and closes the orifice O 2 . Thereafter the piston P and control element D move slowly to the left at a rate controlled by the orifice 01. Fig. 1 shows a pressure-time graph for a good road surface using the apparatus shown in Fig. 4.
Patent GB-1110109-A (GB)
Title: Improvements in or relating to display and switching devices
Inventor: SHERWOOD RALPH
IPC: G09F13/24
Filed: 1964-12-07
Abstract: 1,110,109. Display devices. GLASS APPLIANCES Ltd. 6 Dec., 1965 [7 Dec., 1964], No. 49780/64. Heading G5C. [Also in Division H1] A device for display per se or for cyclically operating other devices comprises two upwardly - open liquid containers wherein gas is bubbled in a regular cycle from one container to another. The transparent or translucent containers 1 are initially charged with water until the hydrostatic pressure on each air inlet 4 at or adjacent the container bottom is substantially the same, the inlets each having an area equivalent to that of a circle of between 1 and 8 mm. diameter. When pressurized air is admitted through a T- or Y-tube 6 it is stated that bubbles will appear in only one container and water from the other container will be drawn into the first, until hydrostatic pressure on the inlet 4 prevents bubble formation, the air then passing into the other container and the water falling to its initial level. This cycle may be repeated indefinitely. The area of each inlet is preferably the same and multiple gas inlets all at the same level may be provided in each container. Movement of a float 11 in either or each container may control a further device, for instance, the floats may be connected to a pivoted lever 14 which carries in one embodiment an arm 15, for operating a switch or mechanical device and in another (Fig. 3, not shown) a mercury switch with central and two end contacts. In a third embodiment each float is connected to a vertical electrically insulated rod with an electrically conductive strip which engages a contact to switch a device on and off as the float moves.
Patent GB-1528213-A (GB)
Title: Clasp mechanism
IPC: A44C5/20
Filed: 1975-12-08
Abstract: 1528213 Hooks MONET JEWELERS INC 8 Dec 1975 [12 Dec 1974] 50275/75 Heading E2A The oppositely-pivoting sister hooks 14, 16 of a jewelery clasp are biased to their closed position by a spring 62 lying in cavities 42, 58 in the hook bodies. The limit stop 36 may be supplemented by a further protrusion (not shown) on body 16 near ring 38.
Patent GB-1363759-A (GB)
Title: Loudspeaker apparatus
IPC: H04R7/12
Filed: 1971-11-05
Abstract: 1363759 Loud-speakers FASER-UNDKUNSTSTOFF-PRESSWERK ROMEN KG 5 Nov 1971 [25 Nov 1970] 51510/71 Heading H4J A loud-speaker comprises a low-frequency, e.g. bass, diaphragm which is driven via an enclosed air space by a second diaphragm driven directly by vibratory energizing means and which is intended to cover the range of frequencies above that of the first diaphragm. In a coaxial arrangement of conical diaphragms (Fig. 1) the low and the higher frequency diaphragms 1, 2 are flexibly supported by a chassis 6, and the higher frequency diaphragm 2 is driven via a moving coil arrangement situated in an enclosed air space bounded by parts of diaphragms 1, 2, chassis 6 and bellows 8, 10. The area of the low-frequency diaphragm 1 bounding the air space is made smaller than the corresponding area of diaphragm 2 so that vibration amplitude amplification takes place at the low frequencies transmitted by the air space. The moving coil arrangement may be housed within the cone 2 instead of in the air space (Fig. 2, not shown). In a composite diaphragm (Fig. 3) chassis 22, 23 flexibly supports lowfrequency diaphragm 26, 20 which in turn flexibly supports higher frequency diaphragm 17. In a further arrangement (Fig. 5) the diaphragms are separately mounted and area coupled by an air pipe 31. The enclosed air spaces may be connected to the atmosphere via a small aperture to allow for changes in atmospheric pressure. More than one lowfrequency diaphragm, each having a different resonance frequency, may be coupled by the enclosed air space to the higher frequency diaphragm.
Patent GB-1506508-A (GB)
Title: Magnetic head
IPC: G11B5/11
Filed: 1975-12-16
Abstract: 1506508 Magnetic head MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 16 Dec 1975 [20 Dec 1974 (2) 31 Dec 1974 (2) 9 Jan 1975] 51512/75 Heading G5R A magnetic head including a magnetoresistive element 2, is formed with magnetic shielding members 12, 13 which screen the element from the fields of tracks 9, 10 &c. adjacent the track 8 being scanned. As shown in Figs. 4a and 4b a substrate is formed of glass 1 and ferromagnetic material 411 bonded together on which is deposited an insulating layer 412 of, e.g. SiO 2 . A thin ferromagnetic layer is now deposited from which the magnetoresistive element 2 is formed by etching or other techniques followed by a second insulating layer 415 of SiO 2 . A second element of glass 413 and ferromagnetic material 414 is now formed and bonded to the layer 415 of SiO 2  and the head is finished by grinding to the plane A-A leaving shielding members formed from the remaining ferromagnetic material 411, 414. Various other constructions including shields formed at an angle to the base of the head are described.
Patent GB-1283124-A (GB)
Title: Process for the manufacture of fine particulate maddrell's salt
Inventor: KERN WINFRIED
IPC: A61K8/00
Filed: 1970-10-30
Abstract: 1283124 Maddrell's salt KNAPSACK AG and BENCKISER-KNAPSACK GmbH 30 Oct 1970 [13 Nov 1969] 51721/70 Heading C1A Maddrell's salt (insoluble Na metaphosphate) is ground and then annealed at 360-420 C. for 0À5-4 hrs. The initial material may contain up to 5% acid pyrophosphate and may be ground to 99% less than 40 Á. Heating may be effected in an electrically heated rotating tube. The product may have a water soluble fraction of less than 3%.
Patent GB-1313227-A (GB)
Title: Information storage devices
IPC: G11B15/00
Filed: 1970-11-02
Abstract: 1313227 Cine apparatus BELL & HOWELL CO 2 Nov 1970 [3 Nov 1969] 51959/70 Heading G2E [Also in Division G5] A casing containing, at least partially, a recording medium having a plurality of items recorded thereon carries a corresponding plurality of indicia which may be set to indicate a choice of items for playback and are adapted to control playback apparatus as described in Specification 1313226. The indicia 37 may be carried on a detachable support 200 which is a press-fit on a normal cartridge or cassette 12.
Patent GB-1163776-A (GB)
Title: Improvements in or relating to the control of Machine Tools
Inventor: HAYES HUBERT GEORGE
IPC: B23B47/20
Filed: 1966-11-23
Abstract: 1,163,776. Milling machines; gauging. HAYES ENGS. (LEEDS) Ltd. 17 Oct., 1967 [23 Nov., 1966], No. 52448/66. Headings B3B and B3K. [Also in Division G3] The setting of a datum between a tool and a workpiece holder of a machine tool is effected by incorporating the tool or workpiece holder and a height gauge element as engageable contacts in a sensing circuit of an electrical control system for axial relative movement between tool and work-holder. As shown, a milling cutter 1 is mounted in a quill of a machine head 3 and is manually adjusted to protrude by an amount sufficient to ensure the required cutting length. The quill is operated by a rack and pinion 4, 5 driven through a worm and wheel 6, 7 from an hydraulic motor 8 controlled by a changeover valve 9. The valve is actuated by solenoids 11, 12 connected to a control box 14. The movement of the tool is initiated by a push 16 and terminated when the tool makes an electrical contact with a height gauging element 17 mounted on a worktable T. A plurality of elements can be employed which are arranged to swing over the work-table. It is stated that the work-table may be movable instead of the tool.
Patent GB-1291777-A (GB)
Title: Bag and method of making the same
Inventor: HART ROBERT LEONARD
IPC: B31B19/86
Filed: 1970-11-04
Abstract: 1291777 Bags W R GRACE & CO 4 Nov 1970 52467/70 Heading A4G A limp, flexible bag comprises opposed registered front and rear walls of limp, flexible sheet polyethylene joined along registered side and bottom edges, a stiff suspension member 30 e.g. of polyethylene, having a base 32 and suspension means 38 projecting upwardly from the base, a surface of the base including a plurality of raised portions and being heat-fused to one of the walls, with the raised portions bonded to the wall, the area of fusion between the base and the wall being smaller than the zone defined by the raised portions jointly, the area lying within the zone. As shown, the suspension means may be inserted into a slit in the other wall, and the wall folded over to close the bag. Various other forms of suspension means are described, Figs.6, 8 and 11 (not shown).
Patent GB-1413613-A (GB)
Title: Process for the dry polymerisation of olefins
IPC: B01J8/24
Filed: 1973-11-15
Abstract: 1413613 Fluidized - bed polymerization NAPHTACHIMIE SA 15 Nov 1973 [17 Nov 1972] 53126/73 Heading C3P Mono-olefins are polymerized in the presence of a catalytically active solid comprising a solid compound of a transition metal of Groups IVa, Va or VIa and a cocatalyst of an organometallic compound of a metal of Groups II or III, the olefin being introduced to the reaction vessel 1 by means of line 10, the catalyst being stored in vessel 11 under hydrogen and introduced into the vessel by means of a stream of hydrogen in line 19, the catalytic solid being passed through vessels 11 and 15 and rotary distributer 16 to a channel 17 fed by line 18, circulating in the reaction vessel, which contains polymers in the course of formation, a rising stream of a gaseous mixture of hydrogen and the olefins, recycling the gaseous mixture via lines 4 and 9, suitably via a heat exchanger 6, and removing at least a part of the polymer formed in the reaction vessel via line 21 and chamber 20. The reaction vessel includes a tranquilization zone 3 of greater diameter. Alternatively the vessel may be cylindrical and be fitted with a cyclone separator, a diagram of such an apparatus being provided in the Specification. The solid catalytic material may comprise the solid compound of a transition metal itself or be associated with a carrier such as silica or magnesia or a prepolymer formed by partial polymerization of an olefin in the presence of the same catalyst followed by separation of the prepolymer and optionally extraction with a solvent. The example relates to the polymerization of ethylene using an ethylene/hydrogen feed, a preformed bed of polyethylene and as catalyst, stored under and introduced by means of hydrogen, the product obtained by polymerizing ethylene in the presence of TiCl 3  and (C 8 H 17 ) 3 Al followed by separation, extraction and mixing of the catalytic solid with further (C 8 H 17 ) 3 Al.
Patent GB-1203976-A (GB)
Title: A system for parallelling a weapon and a sight from which the weapon can be laid by remote control
Inventor: BLOMQVIST AKE HUGO PETRUS
IPC: F41G3/32
Filed: 1967-11-22
Abstract: 1,203,976. Weapon sights. BOFORS A.B. 22 Nov., 1967 [25 Nov., 1966], No. 53195/67. Heading F3C. [Also in Divisions H3-H5] Specification describes a system for the initial lining up of a weapon 1 and sight apparatus 4, the sight, after said lining up being used to sight out a target and transfer its movement to the weapon by means of an interconnecting servo system. During said lining up the servo link is broken, or the lining up may be carried out by an " in series " servo 7. A radiation source 9 is provided on the weapon which sends a beam of radiation in a direction opposite to the direction of fire of the weapon, said beam having different characteristics either side of a vertical control plane whereby the sight 5, sensitive to the radiation may accurately determine when the beam is being centrally detected by it. The radiation may be light, whereby light from a source 10, Fig. 2, is collimated by lenses 11 and 13 and has its left and right halves produced in different colours by means of filters 12a and 12b. Alternately the light may be formed with horizontal slit cross-section by means of slit 15, Fig. 3, and the left- and right-hand sides of the beam pulse modulated at different rates by means of rotary shutter 17. The pulse modulations may be in the form of distinctive morse codes.
Patent GB-1399340-A (GB)
Title: Metal laminates
IPC: B32B15/14
Filed: 1971-11-17
Abstract: 1399340 Metal laminates BRITISH STEEL CORP 16 Nov 1972 [17 Nov 1971] 53395/71 Heading B5N A laminate comprises stacked metal sheets (particularly of steel) with adjacent sheets bonded to an intermediate core of fabric impregnated with an ethylene-vinyl acetate copolymer. The fabric may be a resin-bonded (e.g. polyacrylate bonded) non-woven fabric of rayon, nylon, polypropylene, polyacrylate, cellulose acetate or glass fibre or may be a woven fabric of any of these fibres or also of jute, cotton, sisal or silk. The fabric is preferably combined with the polymeric material in particulate form prior to stacking, usually by spraying on of the particles followed by heating. Lamination of the thus-impregnated fabric with the metal sheets is then effected by means of a heated multi-platen hydraulic press and subsequent cooling.
Patent GB-1150976-A (GB)
Title: Telescope Sensitive to Infra-Red Radiation
IPC: G02B23/12
Filed: 1967-11-27
Abstract: 1,150,976. Local viewing apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 27 Nov., 1967 [30 Nov., 1966], No. 53821/67. Heading H4F. An infra-red telescope comprises an oscillating spherically concave mirror 2, Fig. 2, which with an infra-red detector 4a analyses the infra-red radiation passing through window 1 from the object. Detector 4a controls via an amplifier (not shown) the current supplied to an electro-luminescent diode 5 which emits visible light with an intensity proportional to the temperature of the point of the object. This visible light from source 5 illuminates through an aperture 6 a small flat mirror 7 arranged symmetrically with respect to detector 4a and aperture 6, so that the beam 16 reflected by mirror 7 is reflected by spherical mirror 2 to form a parallel beam 17 in the instantaneous direction of the incoming infra-red radiation received by element 4a. Beam 17 is reflected by mirrors 8 and 9 into a telescope 15 having an objective 10 so that the converted infra-red image of the object is seen in the eyepiece 12 in accurate superposition with the direct image formed by the telescope from the visible light coming from the object directly through objective 10. Telescope 15 may include an image intensifying tube. Mirror 2 is arranged to scan a raster by means of an electric motor and cams, Fig. 3 (not shown). The amplifier supplying the signals to the diode 5 may control the brightness and contrast of the converted infra-red image.
Patent GB-1447130-A (GB)
Title: Anchor particularly suitable for small boats
IPC: B63B21/30
Filed: 1974-12-13
Abstract: 1447130 Anchors M GIOLFO 13 Dec 1974 [27 Dec 1973] 54021/74 Heading B7S An anchor comprises a shank 1, e.g. of T- section material, joined to a tubular portion 2, cut from a pipe at an angle to the pipe axis, and joined to the shank so that the parallel faces of the portion 2 are disposed at an obtuse angle B to the shank. Opposite the shank the portion 2 is ballasted by an arcuate element 8 which encloses a tapered space which is filled with, e.g., lead.
Patent GB-1404550-A (GB)
Title: Copolyamides which contain quinazolinedione structures
IPC: C08G73/06
Filed: 1973-11-28
Abstract: 1404550 Copolyamidoquinazolinediones BAYER AG 28 Nov 1973 [2 Dec 1972] 55091/73 Heading C3R A coplyamide consists of 25-99% moles units (I) and 75-1% moles units (II) where Q<SP>1</SP> and Q<SP>2</SP>, which may be the same or different, are radicals containing # 1 quinazoline-2,4-dione structure. Q<SP>1</SP> and/or Q<SP>2</SP> may be where R is H or C 1-4  alkyl, X is an aromatic ring or rings condensed or joined by a single bond, -CO-, -CR 2 -, -O-, -S-, or -SO 2 -, and is optionally substituted, and Z is Q<SP>1</SP> and Q<SP>2</SP> may both be The copolyamide is made by reacting diamines H 2 N-Q<SP>1</SP>-NH 2 , and H 2 N-Q<SP>2</SP>-NH 2  if different, with appropriate proportions of iso- and tere-phthaloyl dichloride in a polar organic solvent, e.g. of the usual N-substituted amide type, at -30 to +150 C. The solution may contain 5-40% solids. The copolyamide may be dry- or wet-spun, e.g. from 12-25% solution in dimethylacetamide or N-methylpyrrolidine, optionally containing 3-8% LiCl or CaCl 2  as solubilizing agent. The CaCl 2  may be formed in situ by using Ca(OH) 2  or LiOH as neutralizing agent for the HCl by-product. Other neutralizing agents are ethylene oxide or propylene oxide. The polyamide solution may be used directly, or the polyamide may first be precipitated and redissolved.