baber/WOPTO huggingface dataset:
Patent GB-1355773-A (GB)
Title: Control apparatus for a web positioning system
IPC: G05D5/06
Filed: 1972-08-14
Abstract: 1355773 Registering webs ROCKFORD SERVO CORP 14 Aug 1972 [20 Sept 1971] 37859/72 Heading B8R [Also in Division G3] Control apparatus for laterally positioning with respect to a web path, a web engaging unit 10, e.g. a web roll stand from which a web is unwound and fed to a slitting roller 11, comprises an electrical, e.g. photo-electric, web position sensor 31, a valve operator 48, 49 responsive to the electrical signals from the sensor 31 to move a pneumatic valve 55 for controlling the fluid pressure applied by a pneumatic pump 75 to a pressure responsive wall 67 of a pneumatic operator 33, and an hydraulic servovalve 34 actuated by the movable wall 67 for reversibly supplying hydraulic fluid to an hydraulic motor 35 which moves the web engaging unit 10. Alternatively, the web engaging unit may be a web processing unit, e.g. the roller 11, but in either case correct register is obtained between the web and unit. The photoelectric sensor may detect deviations from a printed line L or other matter on the web, a pneumatic web edge sensor 36 being optionally cut into the pneumatic control circuit when required by electrically operated valves 116, 117. Additionally, a pneumatic roll stand position sensor 37 or a pneumatic manual valve may be cut in when required. The photo-electric sensor may be of the reflection or transmission type. The electrical valve operator comprises a coil 48 which attracts a spring biased arm 55 from the orifice of a pneumatic conduit 59 for reducing the pressure applied to the wall 67 by pump 75 via conduits 77, 81. The wall 67 is connected to a valve element of the hydraulic servo-valve 34, the element having spaced spools 64a, 64b which control the hydraulic flow from an inlet conduit 87, connected to an hydraulic pump 85, to outlet conduits 92a, 92b connected to the motor 35, the element normally being held in the null position by a spring 98 adjustable by a screw 99, the servo-valve 34 is held in an hydraulic fluid reservoir tank 61.
Patent GB-619816-A (GB)
Title: Improvements in thermostats
IPC: G05D23/02
Filed: 1946-12-30
Abstract: 619,816. Thermally - actuated valves. METERS, Ltd., and BARNES, H. V. Dec. 30, 1946, No. 38001. [Class 135] [Also in Group XIII] In a thermostat comprising a gas valve b the body n of which is secured to one end of a brass or other metal tube d with a high coefficient of expansion closed at the other end by a plug e and containing a relatively inexpansible rod or tube i engaged at one end by adjusting means and at the other end by a rocking member g, h, which pivots about the plug e and can engage the valve b with its end remote from the pivot, the rocking member g is provided with a knife-edge which engages in a V-groove f in the plug, and the rod or tube i has one end seated in a depression in the rocking member g, h, the depression and the V-groove being so positioned relatively to one another that contraction and expansion of the tube relative to the rod causes the rocking member to open the valve or to allow it to close. The adjusting means comprises a screw k with a rod which enters a recess in the end of the rod i, and a spring p which is compressed if the thermostat is excessively cooled. The ball valve shown may be replaced by a poppet valve.
Patent GB-1029899-A (GB)
Title: Improvements in and relating to a lubrication arrangement for pistons, such as pistons for internal combustion engines
Inventor: GRUM-SCHWENSEN CHRISTEN SOFUS
IPC: F16J9/00
Filed: 1964-09-17
Abstract: 1,029,899. Pistons; cylinders. BURMEISTER & WAIN'S MASKIN-OG SKIBABYGGEN A/S. Sept. 17, 1964 [Aug. 29, 1964], No. 38084/64. Heading F2T. A piston 8, Fig. 1 (not shown), has in one of its lower piston sealing ring grooves 9 an oil distributing ring 1, the surface of which pressing against the cylinder wall being provided with projections of such shape that by movement of the piston a component of movement in the circumferentail direction is imparted to the oil film on the cylinder wall. The projections 3, when viewed on cross-section line X-X of Fig. 3, may be rectangular, Fig. 6 (not shown), or, for providing a more powerful scraping effect in one direction of movement, the rectangular projections may be chamfered along one edge or replaced by projections of parallelogram or dovetail form. With reference to cross-section line Y-Y which runs parallel with and between two adjacent projections 3, Fig. 15 (not shown), oil grooves 4 may be provided in the projections as shown in Fig. 16, in both the projections and ring, Fig. 17 (not shown), or in the ring only, Fig. 18 (not shown). The projections may also be curved along their length, Fig. 12 (not shown). The ring may be made of mild steel, bronze or cast iron and, if desired, chomium plated; the projections may also be made of different material from the rest of the ring. The ring may be split or formed of segments pressed outwardly by springs, and in another embodiment, combined with a different type of ring in a single groove.
Patent GB-303030-A (GB)
Title: Improvements in the method of and system for producing a tight joint for members provided in a wall separating spaces of different pressure
IPC: F16J15/44
Filed: 1928-12-24
Abstract: 303,030. Stintzing, H. Dec. 24, 1927, [Convention date]. Stuffing-boxes, substitutes for; boxes combined with ball bearings; draining. - Packing for a rotating or oscillating member, especially one passing into a high-vacuum chamber, comprises surfaces separated by a small clearance, which is maintained by means of a ball bearing, the clearance being supplied with a viscous or liquid substance. A rotatable member c may be formed with a conical collar b opposed to a similar seating a in the vacuum chamber n, the clearance being maintained by a ball bearing k, in a chamber f, adjustable by nuts i. An intermediate chamber m, closed by a collar d on the member c, is supplied with fat. In a modification, the chamber f is directly attached to the chamber n and is completely closed by the end plate h. The chamber is connected to a vacuum pump, by means of which mercury is drawn into the chamber from a reservoir. An outlet is provided for the escape of mercury leaking between the surfaces a, b. The Specification as open to inspection under Sect. 91 (3) (a) states that axially movable cylindrical or polygonal members may be packed in the same way and describes a modification allowing oscillatory movement, in which a member c<1>, Fig. 3 (Cancelled.), carries a spherical collar b<1> opposed to a similar seating a<1>, the clearance being maintained by balls k between a spherical seating u<1> in a chamber l<1> and a spherical collar v, adjustably mounted on the member c'. The chamber l<1> is supplied with fat. The member c' may be axially movable in the collar b<1>. This subject-matter does not appear in the Specification as accepted.
Patent GB-904185-A (GB)
Title: Improvements relating to ion-exchange processes
Inventor: ARDEN THOMAS VICTOR
IPC: B01J47/10
Filed: 1957-12-11
Abstract: In a two stage ion-exchange process involving absorption and elution the resin is transferred from absorber to eluter by means of previously used eluant.  Specifications 780,406, 835,568, 904,184 and 904,186 are referred to.
Patent GB-306932-A (GB)
Title: An improved electric hollow conductor
IPC: H01B5/06
Filed: 1928-12-31
Abstract: 306,932. Felten & Guilleaume Carlswerk Akt.-Ges. Feb. 29, 1928, [Convention date]. Cores for cables.-A hollow electric conductor, particularly for high-voltage overhead lines, is formed from a flat strip of conducting material, the strip being wound into a cylinder without a supporting member, and the edges a of the strip being folded into one another.
Patent GB-1294169-A (GB)
Title: Scanned line radiation source
Inventor: SANDBANK CARL PETER
IPC: H05B33/12
Filed: 1970-08-11
Abstract: 1294169 Electroluminescence STANDARD TELEPHONES & CABLES Ltd 11 Aug 1970 38606/70 Heading C4S A scanned line radiation source includes a body of semi-conductor material exhibiting high field instability effects wherein a domain, once launched, draws no further power, electrodes 2, 2, for producing an electric field above a threshold value causing formation and propagation of the domain, and electroluminescent layer 3 responsive to the voltage drop across the domain to emit a moving strip of visible radiation, the intensity of the radiation being determined by the voltage drop. The threshold value is that field below which spontaneous self-oscillation does not occur. The electroluminescent layer may be in stripes (3a, 3b ...) (Fig. 2, not shown), the intensity of the emission may be modulated by varying the value of the applied potential difference above the threshold value and the semi-conductor material may be CdS or GaAs. The electroluminescent material may be ZnS and 50 Á thick. If the value of a steady electric field exceeds the threshold value by the application of a further signal for a shorter time than the instability transit time between the two contacts, a single excursion only will be effected, and for this operation the steady field must exceed 50 to 75% of the threshold value. The further signal may be oscillatory or trigger pulses, effecting selfoscillation for a fraction of each cycle, and the emission may be modulated. Also, the above threshold voltage may be continuously applied.
Patent GB-949365-A (GB)
Title: Improvements in and relating to gramophone pickups
Inventor: SPENCE ROBERT SYDNEY
IPC: H04R1/16
Filed: 1958-12-01
Abstract: 949,365. Gramophone pick-ups. COSMOCORD Ltd. March 1, 1960 [Dec. 1, 1958], No. 38643/58. Heading H4J. In a gramophone pick-up a stylus carrier is detachably secured with respect to the casing by a detachable spring clip. The stylus carrier comprises a tubular member 20 carrying two oppositely directed styli 22, 23 for standard and micro-groove records, respectively, at one end, and connected at the other end by a flexible wire 24 having an end bent at right-angles and moulded into a circular sectioned mounting and turning member 26 provided with a finger grip portion 26b. The member 26 is pressed into V-shaped recesses in the casing by the crimped up end of a leaf spring 30 which is slid into position beneath two retaining lugs 32 in the casing. An enlarged centre part of the member 26 is made oval in section so that it is retained in one or other rotational position according to the stylus selected for use. The tubular part 20 of the stylus carrier is damped by engagement with a pad 34 of damping material. The invention is applied to a piezoelectric pick-up comprising two bimorphs, of which one (14) is shown, mounted on compliant pads 15, 16 of plasticized polyvinyl chloride and driven by means of a diamond-shaped coupling member 17 of compliant material so designed that reproduction is possible from either lateral cut records of 45/45 stereophonic records tracked by the stylus.
Patent GB-1058224-A (GB)
Title: Roots blowers
Inventor: HUBRICH CHRISTOPH
IPC: F01C1/12
Filed: 1963-10-01
Abstract: 1,058,224. Rotary compressors. POLYSIUS G.m.b.H. Oct.1, 1963, No.38683/63. Heading F1F. A rotary compressor of the Roots'-blower type comprises a pair of ancillary rotors or rotary sliders (4, 5), Figs. 1 to 14 (not shown), which rotate in synchronism with the main rotors or impellers (2, 3) and periodically come into contact with the lobes thereon whereby a compressible fluid e.g. air, is compressed in spaces or zones (8, 19) between the main rotors and the casing (1) before it enters a space (17) between the ancillary rotors, which space lies adjacent a delivery port (7). The portions (22', 24', 26') of each ancillary rotor which come into contact with the lobes of the associated main rotor have profiles similar to those of the portions (22, 24, 26) of each main rotor lying between the lobes whereby both pairs of rotors can be machined by the same tools.
Patent GB-1404530-A (GB)
Title: Composition and method for chemically peeling fruits and vegetables
IPC: A23L1/00
Filed: 1973-08-16
Abstract: 1404530 Peeling vegetables etc ETABS DU PAROY 16 Aug 1973 [19 Aug 1972] 38698/73 Heading A4C A method of peeling fruits and vegetables comprising dipping them for a period of 1-30 minutes in an aqueous solution of the ammonium salt of an inorganic acid and/or ammonium carbonate, the salt concentration being 5 wt per cent at 20C and having a pH of 7-9À5 and the solution in use being kept at a temperature of 60-100C. The preferred salt is monoammonium orthophosphate, diammonium orthophosphate, triammonium orthophosphate, mixed salts of ammonium and of an alkali metal base of orthophosphoric acid, ammonium carbonate, or mixtures of these ammonium salts. The ammonium  salt concentration of the composition ranges from 0À5 to 15 wt per cent and preferably from 1 to 5 wt per cent. The dipping time is 1 to 30 minutes and preferably 3-10 minutes. The solution in use is kept at 60-100C and preferably 80-95C. A surface active agent may be included in the solution. The pH value of the solution is 7-9À5 with 8À1 to 8À5 preferred.
Patent GB-1126069-A (GB)
Title: Wide angle zoom lens system
IPC: G02B15/14
Filed: 1965-09-13
Abstract: 1,126,069. Zoom lenses. CANON CAMERA CO. Inc. Sept. 13, 1965 [Sept. 15, 1964], No.38940/65. Heading G2J. A zoom lens has a divergent group I which is movable only for focusing, a fixed converging group II, a movable divergent group III, a movable divergent group IV, aperture stop AS, and fixed convergent groups V, VI, wherein: - 1. The focal length of group V is so chosen that the equivalent focal length of groups I to V combined is always negative throughout the zoom range and the absolute value thereof at the shortest focal length position is between 1À5 and 2À5 times the minimum focal length of the zoom lens f min . and the focal length of group III lies in the range 2À2 to 1À6 times f min . 2. The absolute value of the focal length (f F ) of group I is less than 1/1À3 of the maximum focal length of the zoom lens f max . the focal length f fr  of group II is less than 1/1À3 of |f F | , the spacing between the second principal point of group I and the first principal point of group II is between 0À23 and 0À33 times f max . and the combined focal length of groups I and II is between 3/5 f max . and f max.  3. The refractive index of the glass of each lens of group III is greater than 1À8 and of group IV greater than 1À7, the refractive index of each negative element in group I is greater than 1À65 and that of each positive element in group II, V is less than 1À55. 4. At least two negative elements are included in group II, the difference in their Abbe numbers from those of the positive elements in the group being at least 35, each such negative element being cemented to a positive element such that the centres of curvature of the cemented surfaces are located at points on the optical axis which are on the same side of the cemented surface as the point at which a marginal light ray incident upon the cemented surface and which reaches the centre of the image surface, or the extension of such a ray, crosses the axis. 5. Group V has at least one positive singlet and one negative singlet, and in group VI there are at least two bi-convex doublets, the cemented surface of each being divergent with its centre of curvature on the opposite side of the stop from the point at which such surface crosses the optical axis. Optical data are provided for the example shown.
Patent GB-1192586-A (GB)
Title: Improvements in or relating to Combine Harvesters
IPC: A01F12/20
Filed: 1967-08-24
Abstract: 1,192,586. Combine harvesters. INTERNATIONAL HARVESTER CO. 24 Aug., 1967 [29 Sept., 1966], No. 38978/67. Heading A1F. In a combine harvester the thrashing means comprises a cylinder having transport fins on its upper internal surface and apertures to permit passage of grain in its lower surface and a rotor consisting of an open framework including rasp bars, means being provided whereby crop material which becomes positioned within the framework is caused to rotate therewith and to be moved by centrifugal force into an operative position between the rasp bars and the inner surface of the cylinder. The cylinder is divided into a threshing section and a separating section having a removable perforated plate or grate. The rotor 50 comprises equi-spaced blades 55 defined by groups of arms 63 extending radially from the rotor core 53, the ends of each group of arms being connected by transverse members 56 which are provided with rasp bars 57 within the thrashing section of the cylinder. To prevent crop material being held within the rotor, the core is provided with radially extending rods 70. At its rear end each blade 55 is provided with a flat plate 71 which serves as a paddle and a fan to direct material to the straw discharge outlet of the combine. Material is fed into the cylinder by means of a helical conveyer having a flight 54 corresponding to each blade 55.
Patent GB-1468628-A (GB)
IPC: G07F5/18
Filed: 1975-09-23
Abstract: 1468628 Rest room complex R REZAZEDEH 23 Sept 1975 [26 Sept 1974] 38979/75 Heading E1A [Also in Division G4]  A rest room complex consists of a plurality of compartments 10 connected to a central control unit 41. Each compartment is made from two side panels, a front end panel, a rear end panel, a ceiling panel and a floor panel. These are held together by tangs on one edge of a panel fitting into slots in an adjacent panel with bolts holding the panels so positioned. Furniture as required is placed in the compartments. Inside the compartment there is a ceiling light 22, a fan 23, a warning lamp 21 and a loud speaker 20. The door 18 is maintained locked by a coin operated lock and timer unit 19. This unit accepts coins from outside the compartment to per-  mit entry thereto and also accepts coins from inside the compartment which set a clock relative to the coinage inserted. There are limit switches in the floor panel of the compartment to detect the presence of an occupant. Control unit 41 has two lights 42, 43 for each compartment. When switch 61 is switched to occupied white lights 43 are illuminated for those compartments which are occupied but the time paid for has not expired. When switched to overtime red lights 42 are illuminated for the compartments that are occupied and the time paid for has expired. Switch 44 allows an operant to contact all the compartments with red lights showing. Alternatively, the panel is arranged for selective connection to individual compartments. Unit 19 has lights to denote whether the compartment is occupied or vacant. In operation a user inserts a coin in unit 19 to gain entry to the compartment. After closing the door further coins are inserted in unit 19 dependant on the time of occupation required. If the user over stays the time paid for light 21 starts flashing and it may be accompanied by an audible signal. The presence of the user can also be detected on unit 41.
Patent GB-850283-A (GB)
Title: Improvements in or relating to electric clocks
IPC: G04C3/027
Filed: 1956-12-21
Abstract: 850,283. Electric clocks. OBERGFELL, R., and OBERGFELL, H., [trading as KIENIGER & OBERFELL]. Dec. 21, 1956 [Dec. 24, 1955; Aug. 4, 1956; Aug. 27, 1956], No. 39107/56. Class 139 In an electric timepiece the maintaining circuit of the pendulum or balance includes a pick-up coil 2, Fig. 1, a driving coil 3, a transistor 1 and a battery 4. To suppress oscillation of the circuit a resistor 5 is connected across the coil 3 or instead, a capacitor 6 may be connected between the base and the collector of the transistor. The magnet 10, Fig. 2, is carried by a curved member 9 of a stirrup 8 fixed to the pendulum 7. The coils 2, 3, the transistor 1 and the resistor 5 are inserted in suitable holes or recesses in a support 13 which has grooves for the connecting leads. The circuit elements may be held in their recesses by varnish and the support 13 may have an annular casing. The coils may be layer wound or lattice wound and one of the coils or the magnet may be movable to vary the instant of impulse. The coils may be wound one on the other, Fig. 5. If the coils are arranged at opposite sides of the pendulum, Fig. 4, each of the coils may be replaced by the double coil arrangement of Fig. 5 in common or separate transistor circuits.
Patent GB-1389262-A (GB)
Title: Method and means for controlling the output conditions of a  self-excited alternating current motor
IPC: H02P27/04
Filed: 1972-03-21
Abstract: 1389262 Control of A.C. motors LITTON INDUSTRIAL PRODUCTS Inc 21 March 1972 39183/74 Divided out of 1389261 Heading H2J The description is substantially the same as Parent Specification 1,389,261, but the claims are directed to the control of a synchronous reluctance motor. Instead of using a tachometer coupled to the rotor shaft as in the induction motor control embodiments of the parent Specification, a shaft position indicator 150 as detailed Fig. 15A or 15B (not shown) is used, which provides a pulse for a given increment of rotor rotation the inductor output being a pulse train in conductor 152 (Fig. 13), Fig. 18 (not shown), the frequency of which is a function of rotor speed and which is indicative of the angular position of the rotor 58 with respect to the stator. This output is used to control the frequency of firing pulses from an oscillator 126 via a ring counter 124 to an inverter 96 whereby to control the frequency of the stator current to ensure synchronism between the rotation of the rotor and rotation of the magnetic field due to stator current component I m . As in the induction motor embodiments claimed in the parent, a function generator 130 may be arranged to add or subtract one or more pulses to shift the phase of the stator current so as to obtain a desired torque output. It may be arranged that under synchronous conditions the indicator frequency equals the inverter firing pulse frequency; and the indicator pulses may be applied via an adjustable delay circuit to the ring counter the oscillator being omitted (as Fig. 14, not shown). The phase angle position of the stator current may be displaced selectively by adjustment of the delay circuit. Alternatively, alteration of the phase angle of the pulse train may be effected mechanically or electrically at the position indicator. A speed error signal may be used to produce a torque command signal, to maintain a desired speed (Fig. 18, not shown).
Patent GB-1160897-A (GB)
Title: Improvements relating to Method and Apparatus for the Production of a Control Strip from an Original
IPC: D03C19/00
Filed: 1966-09-02
Abstract: 1,160,897. Programme control of knitting machines. FRANZ MORAT G.m.b.H. Sept.2, 1966 [Dec.11, 1965], No.39368/66. Heading G3N. The locally dependent distribution of brightness or colour in an original is converted into data on a control strip for a circular rib knitting machine by scanning the original and after electronic evaluation distributing the items corresponding to different brightness or colour to tracks of the control strip in depdence on the number of differently coloured threads, the number of cylinder needles and needle systems. As shown, a pattern V is scanned by pulse generators, mounted on a carriage 101, which respond to the colour or brightness of elemental areas of the pattern. The carriage is moved in the X direction continuously, or, in steps, so that the scanning pulse generators derive pulses, which, through an electronic distributor C, are allotted to marking pulse generators A1-A24 producing markings on a record film St carried around the periphery of a roller B moving in synchronism with the carriage 101. The carriage 101 is returned to the origin at the completion of an X movement independently of the roller and is stepped, as shown, in the Y direction before the next X movement. The allocation of colours in the original and of scanning and marking pulse generators for deriving a control strip for a 24 system circular knitting machine is set out in the Specification.