baber/WOPTO huggingface dataset:
Patent GB-1305757-A (GB)
IPC: D02G3/38
Filed: 1970-08-12
Abstract: 1305757 Mixed filament and fibre yarn BEMBERG SpA 12 Aug 1970 [30 Aug 1969] 38807/70 Headings D1F and D1W A process for the manufacture of a yarn consisting of a bundle of filaments and fibres, in which the fibres are blown on to the filament bundle by a gas or air stream and are interlaced with the filament bundle by this gas or air stream is characterised in that a fibre metering device delivers the desired amount of fibres into the gas or air stream. The gas or air stream may be guided through the fibre metering device or a part of the stream is guided through the metering device and before or in the interlacing device is combined with the gas or air stream which passed outside the metering device. The gas or air stream passing through the metering device may be intermittent or fluctuating and intermittently obtains a pressure higher than that of the stream passing outside the metering device. In an alternative embodiment, the supply of fibres to the gas or air stream may be intermittent. The frequency of the intermittent supply of fibres is preferably equal to the frequency of the intermittent supply of gas or air in the stream. The fibres are preferably formed by the action of a knife which moves within the metering device and acts upon a sliver or filament bundle fed to the metering device. In a preferred form of apparatus for carrying out the process an interlacing device 2 contains a chamber with a supply and discharge opening 3, 4 for the filament bundle 1, and an interlacing air inlet 5 to which a second air supply channel 8 is connected, and is characterised in that a fibre metering device opens into a first air supply channel 10 which is connected, between the metering device and the interlacing device, to the second air supply channel 8. The metering device is preferably equipped with a cutter 12 which acts on a sliver or filament bundle 11 fed to the device by feed rollers 13. The intermittent supply of fibres and air is effected by means of a rotatable air valve fitted in the first air supply channel 10. The cutting device 12, the feed rollers 13 and the air valve are operated by one drive and by suitable selection of transmission gears, the ratios of the drive of the cutter, the feed rollers and the air valve are adjustable. The yarn produced may have an even or regularly uneven appearance. The same or different materials may be employed for the filaments and fibres. The process is advantageously employed with a draw-twisting process, the interlacing being effected between the drawing and twisting processes.
Patent GB-1123104-A (GB)
Title: 3-oxime-steroids and method of preparation
IPC: C07J75/00
Filed: 1966-09-02
Abstract: The invention comprises compounds of formula <FORM:1123104/C2/1> wherein R1 is hydrogen or methyl and R1 is methyl or ethyl, and their preparation by reaction of the corresponding 3-keto compound with a hydroxylamine salt in the presence of a base.
Patent GB-1176556-A (GB)
Title: Improvements in Digital Differentiators
Inventor: DIEDERICH MARIE ALPHONSE PAUL
IPC: H03K5/1534
Filed: 1967-08-29
Abstract: 1,176,556. Digital circuits. DECCA Ltd. 16 July, 1968 [29 Aug., 1967], No. 39514/67. Heading H3P. A circuit responsive to the change of an input signal 10 from either of its two states to the other includes a comparator 12 which receives the input signal and produces an output at 17 only when this input is different from the output 13 of a bi-stable 14, the bi-stable changing state only when the comparator output 17 coincides with a clock pulse from a clock 16. The input signal may be a variable signal (S, Fig. 4a, not shown), the two states of which are regarded as being above a first limit (" 1 ") and belowthe same or a second limit (" 0 "). The signal, alternatively, may be digital, or may have amplitude states representing frequency limits of a variable frequency signal. An input circuit to the comparator may be a dead-band amplifier, or a Schmitt trigger. When the input signal (S) falls below the " 0 " level, the comparator 12 inputs are different and it produces an output at 17 (Fig. 4c, not shown). Coincidence of the next clock pulse (C2) with the comparator output is sensed by an AND gate 15 which operates the bi-stable 14, and consequently both inputs to comparator 12 become the same again, and its output ceases. The cycle repeats each time signal S passes into one or other state. A further bi-stable (18, Fig. 2, not shown) between the input 10 and the comparator 12 is also controlled by clock pulses and ensures that the start of each comparator output pulse (Fig. 4e, not shown) at 17 is synchronized with a clock pulse, the output pulse length depending upon circuit values. In a different embodiment (Fig. 3, not shown), a first clock-controlled J-K bi-stable (21) directly controls a second clock-controlled J-K bi-stable (22) corresponding to the bi-stable 14 of Fig. 1, the comparator being in the form of two AND gates (23, 24), the two inputs of one gate being connected to the direct output of one bistable and the inverse output of the other, and the two inputs of the other gate being connected to the remaining bi-stable outputs, so that neither gate normally conducts. The AND gates respectively respond to opposite input signal states; a change of state of input changes over the first J-K bistable to provide two " l's " to one of the AND gates and hence an output (e.g. at 26); and after a delay determined by circuit values the second J-K bistable changes over and the output disappears.
Patent GB-1161299-A (GB)
Title: Indicating Means for the State of Application of Brakes
IPC: B60T17/22
Filed: 1967-08-29
Abstract: 1,161,299. Brake indicators; fluid pressure brakes. KNORR-BREMSE G.m.b.H. 29 Aug., 1967 [31 Aug., 1966], No. 39551/67. Headings F2E and F2F. Means for indicating the state of application of a compressed air brake, with which a hand brake may be associated, comprises a valve with connections to a compressed air source, to the atmosphere and to the pipe of an indicating means, and which is coupled to the piston of the brake cylinder. Brake control valve 2 controlled by the pressure in a main air pipe 1 controls the admission of air pressure to chamber 3 of brake cylinder 4 from an auxiliary-air reservoir 5. Piston 6 of the brake cylinder 4 carries brake operating rod 7 to which is pivoted a hand brake lever 8. Valve 10, which is connected to the auxiliary air reservoir 5 by pipe 15, to atmosphere by vent 22 and by pipe 16 to the brake application indicator 19 contains a plunger 9 which projects into the brake cylinder chamber 3 so as to be displaceable but sealed. Plunger 9 carries two relatively small pistons 11, 12 and in the "brake off" position shown is constrained by brake piston 6 so that vent 22 is in communication with the brake indicator feed pipe 16: there is then no pressure under the piston 17 of brake indicator 19 and the indicating panel 20 is in the lowered position. When the brake is actuated (Fig. 2, not shown) brake piston 6 is displaced to the left and air pressure behind the piston 12 causes the plunger 9 to move in the same direction, so that piston 12 becomes interposed between vent 22 and brake indicator feed pipe 16. Air under pressure from pipe 15 then enters brake indicator feed pipe 16, forcing piston 17 upwards against the pressure of spring 18, so bringing the indicating panel 20 into a raised position.
Patent GB-1043748-A (GB)
Title: Controlled polymerization process
IPC: B01J19/00
Filed: 1963-10-08
Abstract: Linear polymers and copolymers are produced by a chain addition polymerization process in the presence of a polymerization initiator or catalyst, which decomposes under polymerization conditions by a first order reaction to form free radicals or ions, the polymerization being carried out in a non-stationary state at such temperature that the major part of each portion of the added polymerization initiator or catalyst is consumed during a period of from one to fifteen minutes, and the polymerization being controlled by feeding or metering said polymerization initiator or catalyst into the polymerizing medium at such a rate that the temperature of the polymerizing mixture is kept at a substantially constant level.  (The expression "stationary state" means that state during which the concentration of free radicals or ions remains unchanged, their rates of creation and destruction being the same.)  Preferably, the polymerization temperature does not exceed 80 DEG  C. and suitable catalysts for such low-temperature polymerization include peracetals, peroxides, hydroperoxides, alkyl hyponitrites, azo compounds and azides.  The polymerizing medium is generally maintained in a liquid state, the process therefore being particularly suitable for solvent, precipitation and emulsion polymerization and for making prepolymers where the polymer is soluble in the monomer. The process can be carried out in a continuous manner.  Examples illustrate the formation of methyl methacrylate and styrene prepolymers using cetyl hyponitrite and methyl azoisobutyrate respectively as catalysts, and the solution polymerization of acrylonitrile using cetyl hyponitrite as catalyst.  The ionic polymerization of styrene using a complex of anhydrous aluminium or iron trichloride with a ,b -dibromo-styrene is also referred to.
Patent GB-1444728-A (GB)
Title: Electrostatic recording devices
IPC: H04N1/29
Filed: 1973-08-22
Abstract: 1444728 Electrostatic recording device NIPPON ELECTRIC CO Ltd 22 Aug 1973 [22 Aug 1972 23 Aug 1972] 39785/73 Heading H4F Electrostatic recording device for use in a facsimile receiver comprises a hermetically sealed gas filled envelope 10 containing a linear array of scanning electrodes 12-n which with a common (anode) electrode 17 and by applying positive start pulse 25 and three-phase negative scan pulses 26-28 as above, a gas discharge is shifted sequentially along the array. In addition the envelope contains voltage pick-up electrodes 21-n disposed in one-to-one correspondence with the scanning electrodes which pick-up the potential developed in the discharge space by the ionic conduction one after another to provide voltages sequentially to recording stylus electrodes 23-n past which electrostatic recording paper 24 is moved over a back electrode 22. The facsimile video signal to be recorded is applied to common electrode 17 at terminal 18 in Fig. 1 or to the back electrode 22 in Fig. 4. According to the invention shunt resistors 30-n and bias source 31 are provided to reduce spurious potential components accompanying the potentials applied across the recording paper due to voltages being derived at pick-up electrodes adjacent the particular discharge path and thus improve the picture quality. In addition the bias source 31 maintains the difference in potentials at the pick-up electrodes 21-n and common electrode 17 below the firing voltage thus preventing spurious gas discharges. Further a switch element 40 is supplied with control pulses 44 which switch it on for only several microseconds at each trailing edge of the scan start pulse and the scan pulses to thereby improve the trailing edge characteristics of the derived or modified potentials from the pick-up electrodes.
Patent GB-932079-A (GB)
Title: Sorbitol ester and its preparation
IPC: C07D/
Filed: 1961-11-09
Abstract: The invention comprises sorbitol hexanicotinate and the preparation thereof by reacting sorbitol with nicotinyl chloride hydrochloride in the presence of a strong base or by reacting sorbitol with sulphuric acid or with chlorosulphonic acid and reacting the sulphate so obtained with calcium nicotinate.
Patent GB-1185767-A (GB)
Title: Electric Kettle
IPC: A47J27/21
Filed: 1968-08-22
Abstract: 1,185,767. Electric kettles. SUNBEAM CORP. 22 Aug., 1968 [3 Nov., 1967], No. 40277/68. Heading A4A. [Also in Division H5] An electric kettle 20 has a detachable cover 23 to which are secured detachably the electric heater 90 and a thermostat 120, the heater being L-shaped and extending to near the bottom 32 of the liquid chamber 41 and the thermostat 120 being spring-biased into good thermal transfer relationship with a portion 115 of the horizontal leg portion 98 of the heater 90. The thermostat is of the bimetallic disc type and is disposed in a well 94, the bottom wall 116 of which is soldered to the bight portion 115 of the W-shaped portion 98 of the metal-sheathed heating element 97. Within the handle 24 is a flex storage chamber 150 including a flex strain relief device 152, see also Fig. 2 (not shown), from which the supply lead 132 passes through a perforated plate 138 into a terminal chamber 140 for connection to the heater and thermostat terminals. A leaf spring 128, Fig. 2 (not shown), biases the thermostat 120 into intimate heat transmitting relationship with the well bottom wall 116. The heating assembly 90 is removable from the kettle without removing the cover 23, merely by removing handle 24, plate 138 and screws 103, after detaching the supply lead from the terminals. Screws 80 and nuts 84 are employed to securely lock the cover 23 to the vessel 21 and, in addition, provide a clamping force on a sealing gasket 62, Fig. 6 (not shown), the nut 84 engaging cam surfaces 69 provided by the cover 23 which force them outwardly until the nuts abut against the bottom of rim shelf 38 on which gasket 62 is positioned. Buttons 86, Fig 6 (not shown), snap into recesses 74 to hide the heads of screws 80. The cam wall 68 disposed immediately below the pouring spout 44 is extended downwardly to an edge 88 which indicates the maximum water level, the edge 88 being viewable through the spout passageway 45. The cover 23, handle 24 and base 22 are polypropylene and the vessel 21 is of stainless steel.
Patent GB-857976-A (GB)
Title: Improvements in or relating to tobacco smoke filters
Inventor: BAUMANN LAWRENCE LEE
IPC: A24D3/02
Filed: 1958-12-15
Abstract: 857,976. Making cigarette filters. CIGARETTE COMPONENTS Ltd. Dec. 15,1958, No. 40393/58. Class 130. A filter rod is made by bunching together and enclosing in a wrapping tube 21 , Fig. 4, a plurality of substantially parallel yarns 11 each formed as in Specification 732,929 of substantially continuous fibres a substantial proportion of which are convoluted individually into coils, loops or whorls at random intervals along their lengths and all of which are bundled together to form a relatively non-extensible yarn core provided externally with a multitude of ring-like loops 31 irregularly spaced along the yarn surface. The yarns 11, Fig. 2 (plan view), which are preferably twisted, are drawn from adjustably braked bobbins 12 by roller pairs 13, 19 between which they are sprayed from above and below in a cabinet 14 with between 3 % and 20 % of their own weight of binder e.g. glyceryl triacetate where the yarns are produced from secondary cellulose acetate. The sprayed yarns are bunched in a funnel 21, and pass on to an endless conveyor belt (not shown) supporting a cigarette paper wrapper drawn from a supply reel and which is wrapped about the bunched yarns helically or as shown with a longitudinal lap joint using a garniture 25, glueing wheel 28, folder 29 and heater 30. The filter rod so formed may be conveyed past a knife which cuts it into lengths and the binder may be set by further heat treatment of the cut lengths. If transparent heat sealing cellulose acetate film is used instead of cigarette paper, the glueing wheel 28 may be dispensed with. The Registered Trade Marks "Taslon" and "Opaceta" are mentioned.
Patent GB-1561797-A (GB)
Title: Sewing machine with a pre-perforating device
IPC: D05B15/00
Filed: 1976-09-29
Abstract: A workpiece prepuncturing device for use with a sewing machine having drive means for reciprocating a needle and means for feeding a workpiece into association with the needle to sew a stitch comprises a perforating tool which is located at a spaced location from the needle which is comparable to a multiple of the stitch length. The perforating tool cooperates with a counter tool which is mounted on the opposite side of the workpiece and is movable toward and away from the workpiece in timed relationship to the speed of the feed and the reciprocation of the perforating tool. The counter tool is supported in a base portion of the sewing machine by an elastic suspension, and it is in drive connection with the main shaft of the machine which operates the needle and the feed for the workpiece.
Patent GB-1040670-A (GB)
Title: Electromagnet
IPC: H01F3/14
Filed: 1964-10-05
Abstract: 1,040,670. Electromagnets. H. L. NAIMER. Oct. 5, 1964 [Oct. 7, 1963; April 24, 1964], No. 40499/64. Heading H1P. In an electromagnet having a laminated magnetic core comprising an armature 12 and a yoke 13 having therein an air-gap 14, the gap defining parts 13a, 13b are mutually fixed by a synthetic plastics, e.g. superpolyamide, envelope 16 and the gap has an inclined setting differing from the normal at right-angles to the yoke in order to be of width greater than the shortest possible. The gap may have a zig-zag form, and in Fig. 7 (not shown), be extended to form channels that are plastic filled. The plastics material also forms integral pins in holes 17, 18 in the armature and yoke, and may be applied to anchor short-circuited rings.
Patent GB-908358-A (GB)
Title: Lighting systems for powered rail vehicles
Inventor: HAMBLIN LESLIE FRANK
IPC: B60L1/14
Filed: 1959-11-30
Abstract: 908,358. Vehicle lighting systems. ROLLSROYCE Ltd. Feb. 28, 1961 [Nov. 30, 1959], No. 40539/59. Class 38 (4). The display of front and rear running lights on a self-propelled rail vehicle or train is interconnected with a reversing gear or controller determining the direction of motion, so that the lights are automatically correctly displayed for the direction selected. Front headlights HF, rear headlights HR, a white front, left, side light FSW, a red, front, right side light FSR, a red, rear, left, sidelight RSR and a white, rear, right, side light RSW are automatically correctly illuminated in accordance with the direction of motion of a diesel locomotive, by means of a member S whose movement depends on a selector shaft of a reversing gear-box between the locomotive's engine and wheels and thus operates two switches HS and SS. These switches, which may be microswitches where the movement of the selector shaft is effected by a pair of opposed pneumatic or hydraulic rams, are arranged so that their switching member is biased so that the contact nearest the member S is normally closed. Current is fed which further switches HL and SL respectively, which are in the overriding manual control of the driver. Two indicating lights IF and IR controlled by to additional switches FS and RS, which may be integral with switches HS and RS, and also operated by the member S, are extinguished when the member is in an intermediate position but indicate to the driver when the reversing gear is " fully home," in its forward or reverse position respectively. Instead of switching the running lights, the system described may be arranged to control the movement of red screens into and out of their light path. The switches HS, SS, FS and RS may be controlled mechanically by the valve linkage of a steam locomotive or the driver actuated linkage controlling the motors of one which is electrically propelled. Where a train comprises more than one unit, the switching system may control the running lights at its two ends. Specification 903,498 is referred to.
Patent GB-1280736-A (GB)
Title: Sectional fire door assembly
IPC: E05F15/20
Filed: 1970-08-26
Abstract: 1280736 Fire door assembly OVERHEAD DOOR CORP 26 Aug 1970 [18 Sept 1969] 41134/70 Heading A5A A fire door assembly mountable in an opening in wall 18 comprises door 10 in horizontally hinged sections 12, mounted for movement between an upright closed position and a horizontal opened position by means of guide tracks 33, 34 on upright side seals or door braces 16, 17, spring-biased counterbalance 61 mountable on wall 18 and connected to the foot of the door, and a fusible link connected to the balance and operable to release the spring tension and allow the door to fall under gravity to its closed position. In Figs. 1, 2 and 5, braces 16, 17 are mounted on wall 18 near to but spaced from opening 19, each comprising angle members 22, 23 bolted to form an S-shape cross section. Flange 29 of angle 23 defines channel 32 into which one edge of door 10 is received, to engage with edge 28 of a strip 24 which is bolted between wall 18 and flange 26 of angle 22. Guide tracks 33, 34 mounted on braces 16, 17 engage rollers 37, 37A which are rotatably supported on shafts 42, 42A in turn slideably supported by bracket 43 mounted on door 10. Track 33 is formed (Fig. 5) of vertical part 44, arcuate parts 47, 48 and horizontal part 45. 47 and 48 are secured by a fusible link (49, Fig. 10). Horizontal track part 45 is also supported by hanger 53 from ceiling 52. Arc part 47 is riveted to mounting member 57 which in turn is secured to wall 18, and one end of counter-balance 61 is also supported on 57. In this embodiment the door is manually raised or lowered by handle 11. Alternatively a chain and gear system or a powerdriven door operator may be used. On release of the fusible link the door falls under gravity to a position where its lower edge 68 is in contact with the threshold (69) and its upper edge is held closely adjacent wall 18 by overlapped flanges (65, 66, Fig. 4) secured to lintel 54 and the upper door edge. (For Figures see next page)
Patent GB-1484712-A (GB)
Title: Charge pattern development method and apparatus
IPC: G03G15/10
Filed: 1974-09-24
Abstract: 1484712 Developing electrostatic images XEROX CORP 24 Sept 1974 41415/74 Heading G2H Droplets of liquid developer issuing from oscillated nozzle 5 are charged at 7 and dispersed laterally into a fan by application of A.C. to electrodes 8 either side of the original stream. If no electrostatic image is present on surface 1 the droplets follow trajectories which do not intersect the surface and end in gutter 9. Electrostatic latent image 2, however, deflects the droplets from their trajectories, and is developed. Preferably a line of nozzles 5 is used to give even cover.
Patent GB-1027468-A (GB)
Title: Improvements in centrifugal separator bowls
Inventor: KOBBERNAGEL EJLER
IPC: B04B1/18
Filed: 1964-10-10
Abstract: 1,027,468. Centrifugal separators. KOEFOED, HAUBERG, MARSTRAND OG HELWEG A/S TITAN. Oct. 10,1964, No. 41431/64. Heading B2P. The peripheral discharge opening 4 of a centrifuge bowl 2, 3 is closed by means of an axiallydisplaceable annular piston 5 and the closure is made fluid-tight by means of one or more resilient packing rings 10, 11 located in one or more annular recesses situated in the vicinity of the discharge opening 4 and facing towards the interior of the bowl, the or each recess being partially bounded by an annular surface which is either in a plane perpendicular to the axis of rotation, or is of a part-conical shape so that the depth of the recess in the axial direction decreases radially outwards. The packing rings 10, 11 have part-conical interior surfaces, the greatest diameter of each surface being nearest the discharge opening, and contact each other along an annular sealing surface 12. When only one ring is used it may be carried by either the piston 5 or the upper part 2 of the bowl. To avoid build-up of pressure, due to leaking fluid, in the spaces 13, 14 behind the packing rings channels 15, 16 are provided in communication with the atmosphere through the opening 4.