baber/WOPTO huggingface dataset:
Patent GB-1121390-A (GB)
Title: Automatic lathe
IPC: B23Q5/26
Filed: 1966-12-20
Abstract: 1,121,390. Automatic lathes. E. C. HAHN, [trading as INDEX-WERKE K.G. HAHN & TESSKY]. 20 Dec., 1966 [21 Dec., 1965], No. 56992/66. Heading B3T. An automatic lathe comprises a control shaft 10 having cams 26 adjustable in grooves 28 thereon, which actuate valves 22 each of which controls the movement of a tool slide 20, and a lever system 90 for each control valve, which actuates a switch 96, to thus interrupt the control shaft drive when a slide 20 is being moved, so as to prevent more than one slide operating at the same time. Shaft 10 is driven by a motor 12 thourgh a variable speed drive 14 and gears 16, 18. Each of the slides 10 is moved by a double-acting cylinder 30 connected to a valve 22 by conduits 36, 38, a reversing valve 42, a check valve 50, and a quantity control valve 40. Each valve 22 comprises a slider 66, a spool 62, locking detents 74, 76, and spring urged pins 72, 70, and a reversing device 54 is aligned with slider 66. In operation, shaft 10 is rotated, cam 26 actuates a roller 68 carried by the slider 66 of one of the valves 22 and the spool 62 is moved downwardly, Fig. 1, to thus supply fluid to the relevant tool slide 10. Lever 110 pivots about an axis 118, a cam 92 actuates lever 120, to thus force a rod 116 downwardly so that lever 94 is pivoted about spindle 99, and switch 96 is actuated to switch off motor 12. Slide 10 continues to be fed to the workpiece 24 until slider 66 operates reversing device 54, and the direction of spool 62 of valve 22 is reversed, so that slide 10 is retracted. In a modification, the control valve (130), Fig. 3 (not shown), comprises a spool (132), having one locking pin (140) and the reversing device 54 acts on the spool.
Patent GB-1293596-A (GB)
Title: Improvements in electron tubes comprising an evacuated envelope enclosing at least three cylindrical electrodes
Inventor: POLESE JAMES PAUL
IPC: H01J1/15
Filed: 1969-11-21
Abstract: 1293596 Thermionic cathode tubes VARIAN ASSOCIATES 21 Nov 1969 [21 Nov 1968] 57089/69 Heading H1D In an electron tube having at least three cylindrical electrodes including a filamentary cathode, an anode and a grid, the cathode 10 is supported by a hollow metallic cylinder 20 which coaxially surrounds at least a portion of a cylindrical metal stem 16 and two axially spaced apart dielectric annuli 22, 24 are interposed between the stem 16 and cylinder 20, one annulus being in fixed abutment with both the cylinder and stem and the other being in abutment with the cylinder and stem such that relative axial movement therebetween is permitted. Fixed annulus 22 rests upon seats 45 and 41 in the cylinder and stem and is secured thereto by applying a force W to each of two annular rings 47, 48, heating the arrangement and allowing movement between the annulus and cylinder, brazing the metallic rings 47, 48 to the cylinder and stem, cooling the arrangement and finally removing the mechanical forces W. The other annulus 24 engages a groove 43 in the stem. Preferably both annuli are segmented and comprise spaced ceramic arcs. Copper cylinder 20 is fixed at its lower,end to flexible copper collar 26 and at its upper end to molybdenum cup 19 supporting the cathode 10. The cathode comprises two sets of parallel thoriated tungsten filaments wound into helices, which are welded together at some of the crossover points such that rows of unwelded crossovers are separated by two or some other even number of rows of welded cross-overs, Fig. 10 (not shown). The ends of the filaments are welded at each end of the cathode to thin molybdenum bands (52), Fig. 7a (not shown), which have a number of flexible integral tabs (53) that are individually welded to respective top and bottom support cups 18, 19.
Patent GB-1370672-A (GB)
Title: Power feed arrangement for communication systems
Inventor: BOLTON L J
IPC: C22C11/02
Filed: 1971-12-15
Abstract: 1370672 Feeding power to repeaters POST OFFICE 14 Dec 1972 [15 Dec 1971] 58244/71 Heading H4R  Energizing current supplied to repeaters via the transmission line from sources at both line terminals is interrupted when a detector at either terminal fails to receive a monitoring signal generated at the other terminal. Line impedance and current tests are automatically initiated before data transmission. Operation.-To commence transmission from terminal A, push button PA is depressed thereby energizing generator GEA via contacts OVAL, PA1 and AK1 and passing the current through test circuit AD1, PA2, CSA1, and dummy load resistors RA1, RA2. Current sensor CSA1 operates relay AE, if the current falls within predetermined limits, to close contacts AE2 preparing relay AC and to change over contacts AE1 thereby connecting a reduced voltage at the RA1, RA2 junction through line impedance sensor CSA2 down the GO path C, through a similar sensor CSB2 at terminal B and back via the RETURN path D. Sensor CSA2 operates relay AF to complete the circuit to prepared relay AC to energize monitor signal generator OA via contacts AC1 and slowacting relay AK via contacts AC2, whilst sensor CSB2 operates relay BF to prepare relay BC at terminal B. The output f 1  of the monitor signal generator OA is sensed by FA1, AR1 at terminal A to energize relay AA preparing relay AD and is sensed by FB1, AR1 at terminal B to energize relay BA to prepare relay BD and connect generator GEB via contacts BA1, BA2 to sensors CSB1, CSB2 as for terminal A (although relay BF is already operational) and sends a second monitor signal f 2  back along the line from generator OB. Sensing of this signal by FB2, BR2 at terminal B, and FA2, AR2 at terminal A completes the circuit to relays BD, AD thereby connecting current via contacts BD1, AD1 to the line and breaking the circuit to slow-acting relays BK, AK which would otherwise have opened contacts BK1, AK1 to de-energize current supply generators GEB, GEA if none of the monitor sensors had detected either signalf 1 ,f 2  at either terminal. Relays AB, BB switch in self-hold contacts for the pushbuttons. Current is thus fed to the repeaters as long as the monitor signals are detected. Overvoltage detectors OVA, OVB open contacts OVA1, OVB1 when energized to de-energize the generators GEA, GEB. Each repeater includes a Zener diode and L-C network (Fig. 2, not shown) to discriminate between L.F. monitor signals, H.F. data signals and D.C. power. Two such systems may form a balanced supply for a two-line, bidirectional transmission system.
Patent GB-1279107-A (GB)
Title: Improvements in or relating to hydraulic transmissions
IPC: F16H39/10
Filed: 1969-12-01
Abstract: 1279107 Hydrostatic transmission VON ROLL AG and CONSTANTIN RAUCH KG 1 Dec 1969 [29 Nov 1968] 58636/69 Heading F2C A hydrostatic transmission for a motor vehicle comprises variable displacement swash plate pump and motor units 1, 2 connected in closed circuit by supply and return conduits, each of which is divided into two parallel lines 13, 15; 14, 16 over at least part of its length, one line 13, 14 of each conduit being connected through non-return valves 21, 22 with a make up supply 23 whilst the other line 15, 16 of each conduit is connected through a shuttle valve 24 to an outlet 25. Liquid supplied through the make up line 23 therefore passes through the pump and motor units 1, 2 before it can flow through the outlet 25. The liquid flowing through the outlet 25 is cooled before being returned to the working circuit. The valves 21, 22, 24 may be provided in a valve plate between the pump and motor units or may be attached to the transmission casing adjacent the valve plate.
Patent GB-1240749-A (GB)
Title: Method of making an end plate for a heat exchanger
Inventor: JOSOK ROLV GUNNAR
IPC: B21D53/08
Filed: 1969-12-02
Abstract: 1,240,749. Making heat exchangers. OLOFSTROM A.B. 2 Dec., 1969 [3 Dec., 1968], No. 58808/69. Heading B3A. A method of making an end plate for a heat exchanger which consists of a distributing and a collecting vessel for heat exchange medium linked by rows of flat tubes having their longer sides facing each other comprises pressing a recess 8 into an end plate 5, the recess being at least as long as a tube row but of less width than the tubes and having opposed pairs of widened portions 9, and drawpunching holes 7, Fig. 5, in the widened portions to produce collared holes for receiving the flat tubes. The width of the recess is preferably 60 to 80% of the width of the tubes and of the same depth as the collar to be produced around the holes. The tubes are secured to the end plates by soldering.
Patent GB-1434622-A (GB)
Title: Foamable polycarbonate composition
IPC: C08J9/00
Filed: 1973-12-19
Abstract: 1434622 Foamable polycarbonate compositions GENERAL ELECTRIC CO 19 Dec 1973 [2 Jan 1973] 58868/73 Heading C3C A foamable flame-retardant injection-mouldable composition comprises a thermoplastic aromatic carbonate polymer, a finely divided powder as filler and a minor amount by wt. of a foaming agent. The polycarbonates may be derived from bisphenol-A (i.e. 2,2-bis-(4- hydroxyphenyl)propane, tetrabromobisphenol- A and/or 2,2 - (3,3<SP>1</SP> - 5,5<SP>1 </SP>- tetrabromo - 4,4<SP>1</SP>- dihydroxy - diphenyl)propane or phosgene and bisphenol-A, the mixture may be fed into an extruder and then comminuted into pellets which is then blended with the foaming agent and then injection-moulded. The filler may be wollastonite.
Patent GB-1119235-A (GB)
Title: Improvements in or relating to piezoelectric coupling elements
IPC: H03H9/60
Filed: 1965-06-08
Abstract: 1,119,235. Electromechanical filters. SONUS CORP. 8 June, 1965 [9 June, 1964], No. 58946/67. Divided out of 1,119,234. Heading H3U. [Also in Division H1] The bandwidth of a piezo-electric coupling element is controlled by increasing the polarizing voltage to a value beyond that required to polarize the element. It is stated that the bandwidth increases with the voltage so that a desired bandwidth can be obtained by using an appropriate voltage. The method may be applied to a filter and, in particular, to the filter described in Specification 1,119,234. The Specification gives several detailed examples of band-pass characteristics obtained by using various polarizing voltages in the manufacture of filters of the kind referred to above.
Patent GB-1337759-A (GB)
Title: Ammoxidation of saturated hydrocarbons
IPC: B01J23/31
Filed: 1971-12-20
Abstract: 1337759 Ammoxidation of saturated hydrocarbons; unsaturated nitriles MONSANTO CO 20 Dec 1971 [21 Dec 1970 1 Feb 1971] 59077/71 Heading C2C α,#-Ethylenically unsaturated nitriles are made by ammoxidation of C 3-12  saturated hydrocarbons CH(R) 2 CH(R)CH 3 , where each R is independently hydrogen or alkyl at 300-650‹ C., using a mixture of hydrocarbon, ammonia and oxygen in molar ratios of 1 : 0À5 : 0À5 to 1 : 6 : 8 respectively in the presence of a catalyst comprising essentially Ce and Mo in the atomic ratio 1-24 : 24 and optionally Bi or Te in the ratio of Bi or Te to Mo of 1-36 : 24, the elements present in the catalyst being combined with oxygen. The reaction may be carried out in the presence of 0À00005-0À1 mol. halogen per mol. saturated hydrocarbon present.
Patent GB-1454421-A (GB)
Title: Chairs
IPC: A47C5/04
Filed: 1973-12-20
Abstract: 1454421 Stackable chairs; chains suspended on tables V SSCHULMbBEL VERWALTUNGS GmbH 20 Dec 1973 [20 Dec 1972] 59281/73 Headings A4H and A4J A stackable chair comprises a metal frame having a forwardly open U-shaped base 13 and upwardly rearwardly sloping supports 19 attached to the outer surface of central regions of the base limbs 14, a rearwardly open U-shaped scat supporting frame 21 attached to the supports 19 and extending around the periphery of a seat 22, and a backrest 31  attached to the upper ends of the supports 19. As shown, parts 13, 19 and 21 comprise metal tubing and the seat 22 and backrest 31 comprise hollow plastics bodies, the underside of the seat 22 mounting resilient pads (30) to protect the seat when the chair is stacked or suspended on a table. The backrest 31 includes a handle (36) in its rear face. In a modification Fig. 7 (not shown), the seat (22') is of plywood and the seat supporting frame (21')  comprises a metal strip with an undercut recess (40) mounting a resilient protective strip (30').
Patent GB-1194450-A (GB)
Title: Magnetic Recording System
IPC: G11B20/14
Filed: 1968-12-13
Abstract: 1,194,450. Recording digital data. NATIONAL CASH REGISTER CO. 13 Dec., 1968 [4 Jan., 1968], No. 59327/68. Heading G4C. Magnetic bit recording system wherein a voltage level change in the centre of a bit period corresponds to a first bit value and a voltage level change at the beginning of a bit period corresponds to the second bit value is arranged such that when a first bit follows a second bit an even number of additional changes occurs during the first half of the bit period containing the first bit and when a first bit proceeds a second bit an odd number of additional changes occurs during the second half of the bit period containing the first bit, the spacing apart of those voltage level changes which include one or more additional changes being less than the wavelength resolution of the mechanism whereby the amplitudes of the magnetization excursions recorded are maintained at a uniform level. Data from a source 12 is shifted along a register 16 containing flip-flops B2, B1, B0 under the control of pulses from a source 2F. Pulses from 2F are applied to flip-flop F to halve the frequency and from there to flip-flop BC to further halve the frequency, the false outputs from the generator and flip-flops being applied to AND gate 14 to produce control pulses SC (Fig. 2d) which are applied to shift the the contents of flip-flops B2, B1, B0. AND gates S1 S2, Q1, Q2 have the inputs as shown from flip-flops B2, B1, B0, BC, F and generator 2F. S1 produces a pulse during the first half of a bit period 22 if flip-flop B1, the contents of which are being recorded, is a "1". Ql produces two pulses during the first half of a period if BO is "1" and B1 is "0". Q2 produces two pulses during the second half of the period if B2 is "1" and B1 is "0" and S2 produces one pulse during the second half of the period if B1 is "0" and B2 is "0". One of the pulses in the last three cases has one edge occuring at the centre of the bit period to indicate that the content of B1 is "0". The bit period and the tape speed are arranged so that the spacing apart of additional successive voltage changes is less than the wavelength resolution of the tape so that self demagnetization due to the lack of high frequency response of the recorder will not permanently record the additional reversals but will record the basic reversals from one level to another.
Patent GB-1412248-A (GB)
Title: Work handling apparatus
IPC: B24C9/00
Filed: 1972-12-22
Abstract: 1412248 Hoisting workpieces in a treating chamber CARBORUNDUM CO 22 Dec 1972 [3 Jan 1972] 59494/72 Heading B8A [Also in Division B3] A workpiece 85 (Fig. 5) is connected to a coneshaped engaging member 57 rotatably supported on a cable 45 which extends from a winch 49 carried by a conveyer trolley 15 (Figs. 1, 2 and 4). Mounted rotationally on the trolley 15 is a member 79. The trolley 15 runs on rails 13 (Fig. 1) so as to convey the member 79 into an abrasive treating cabinet 11. The winch 49 is then actuated to wind up the cable 45 until the cone shape of the member 57 centres within a similar profile of the member 79. The members 57 and 79 also have surfaces which lock them together against relative rotational movement. Wedging between the conical members is prevented by providing a pad 81 of polyurethane. In the cabinet 11, an endless member 19 engages a gear 43 on a tubular extension 27 of the member 57. The arrangement enables rotation of the workpiece to take place without rotation of the cable 45. Means is provided (Figs. 7, not shown), to stop the winch when the members 57 and 79 interengage. In a modification, the members 57 and 79 are coupled for rotation by an elongated key so as to permit combined rotation and vertical movement of the workpiece. In another modification, the conveyer is replaced by a winch (Fig. 8, not shown).
Patent GB-1415650-A (GB)
Title: Attachment devices
IPC: A01K11/00
Filed: 1971-12-30
Abstract: 1415650 Gripping tools T R COUGHTRIE 1 Jan 1973 [30 Dec 1971] 60802/71 Heading B4W [Also in Division B6] A hand tool for applying indicator tags 9 to the ear of an animal, the tags being attached to respective parts 10, 11 of a two-part fastener, comprises jaws 16, 17 moving towards and away from each other, a spring-loaded pin 26 carried by the jaw 16, said pin being movable against the action of the spring 27 to an operative position in which it extends through and projects from an end 13 of a spigot 12 formed on fastener part 10, releasable catch means 28 adapted to hold the pin in the operative position and on release to allow the pin to move to a retracted position free from the spigot 12, and means 24 on the other jaw 17 for retaining the other fastener part 11. The jaw 17 is arranged to slide on a limb 18 of the jaw 16, guide pins 30 being provided on jaw 17 for this purpose. The catch 28 is provided at the upper end of a lever 32 pivoted to the hub 18 and as the jaws are closed the upper guide pin 30 contacts a cam surface 33 on the lever 32 to release the catch 28. Thus with an animals ear disposed between the jaws as the jaws are closed the ear is pierced by the point of pin 26, the enlarged end of spigot 12 is forced through the ear and then through a narrow portion of a bore in the fastener part 11 until the rear shoulder of the enlarged end of the spigot reaches the larger bore 15 in part 11; at this stage the catch 28 is disengaged by the cam action of pin 30 on surface 33 thereby allowing spring 27 to urge pin 26 to its retracted position. The jaws are then opened leaving the tags 9 fastened to the ear by the interengaged fastener parts 10, 11. The fastener parts and tags are formed from flexible synthetic resin material.
Patent GB-670724-A (GB)
Abstract: 670,724. Treating materials prior to printing. HARTLEYS (STOKE - ON - TRENT), Ltd., HARTLEY, C. J., and HARTLEY, A. J. May 12, 1950 [May 12, 1949], No. 12634/49. Class 100 (ii). [Also in Groups VIII, XI and XIII] Before being fed to roller printing apparatus paper, e.g. on which transfers are to be printed, passes through a machine wherein it is sized and then led round a rotary cylindrical drying drum having an internal non-rotating electric heating system. The machine shown is similar to that described in Specification 571,884, [Croup XIII], the steam-heated cylinder thereof being replaced by straight flat bar electric heating elements 26 supported on equidistant radial rods 25 screwed into bosses 24 fixed to the stationary shaft 23 which carries bearings 22 for the aluminium drum 11 with its removable lagged end plates 20, and is drilled at 23a for the rod 27 of a thermostatic switch 28 and for passage of electric leads 29.
Patent GB-734212-A (GB)
Abstract: 734,212. Boxes. THOMPSON & NORRIS MANUFACTURING CO., Ltd. Jan. 1, 1954 [Jan. 2, 1953], No. 187/53. Class 18. A box for storing documents &c. has overlapping side walls 11, 12 having tongue-and-slot connections 18, 20 which permit limited hinging movement between opposed walls 2, 3 to facilitate access to the contents.
Patent GB-2026645-A (GB)
Title: Furniture Joints
IPC: F16B12/04
Filed: 1978-07-28
Abstract: A joint is made by having pieces (10, 12, 14) to be joined formed at and near their desired jointing with communicating holes (16 to 30), grooving, channeling or the like into and/or about which is introduced a flowable setting substance (38) usually by a casting or moulding operation. This simplifies jointing by reducing accuracy requirements and may also provide a decorative effect if desired. <IMAGE>
Patent GB-2017297-A (GB)
Title: Optically Sensitive Switch
IPC: H03K17/78
Filed: 1979-03-13
Abstract: An optically sensitive switch, e.g. for use in an opto-isolator, comprises a FET (3) exemplified by an n-channel depletion mode device, gate voltage being provided by photovoltaic means (7) exemplified by an array of photodiodes connected in series. The switch may be turned on or (as in the example) off by illuminating the photovoltaic means, no other power source being required. By including a similar photovoltaic means between drain and gate, with reverse polarity blocking diodes in series with each of the photovoltaic means, a bilateral switch may be provided. A further level of control may be obtained by using a photo-FET as the FET. <IMAGE>
Patent GB-2021743-A (GB)
Title: Method and apparatus for firing ceramic products
IPC: F27B9/24
Filed: 1979-05-24
Abstract: Clay pipes and the like (3) are fired in a kiln (1) through which they are conveyed by pusher members (4) on an endless conveyor (2) as individual articles, instead of being carried on cars or in containers. In the main firing zone of the kiln the pipes (3) roll along a surface (6) to maintain roundness and ensure uniform heating. In the preheating zone of the kiln the pipes are carried by carriers (5) of the conveyer without rotating. The pipes may also be carried without rotating in the final cooling zone of the kiln. <IMAGE>
Patent GB-2023485-A (GB)
Title: Extrusion granulating apparatus for plastics melt and other materials
IPC: B29C48/345
Filed: 1979-06-06
Abstract: A cutter shaft (7) mounting a multi-blade cutting implement (10, 11), bearing means (6, 8, 9) for the cutter shaft (7) and drive means (21) therefor are combined into a unit, which is mounted so that it can be swivelled about a resiliently deformable centering ring (17) adjacent the extrusion die plate (15), to adjust the parallelism between the cutter blades (11) and the die plate (15). Screw drives (25) preferably effect the adjustment which is permitted by the unit being movably mounted to an extrusion die part 3 at a wall 36, by spring loadings 29 at bolts 28. The parallelism is determined by a single revolution of a measuring instrument with a blade holder 10. Cooling air is delivered onto the blades 11 from a die space 20, via holes 18 through the ring 17. The blades 11 throw the granules onto a water film running down a wall 30, of a housing 37 which may be vertically displaced from the die plate 15 by hydraulic cylinders 38. <IMAGE>
Patent GB-2028527-A (GB)
Title: Improvements in liquid crystal displays
IPC: G02F1/1335
Filed: 1979-06-07
Abstract: A nematic liquid crystal light shutter has an improved angle of view by the incorporation of at least two retardation plates 64, 66, disposed in front of the liquid crystal cell to compensate for the off-axis performance of the device due to the birefringent nature of the liquid crystal material. When the transparent plates 10, 12, of the liquid crystal display are provided with conductive surfaces 24-30 and 16-22 rubbed at right angles to each other to effect a twisted-nematic structure, two retardation plates are employed, the net retardation of each being less than or equal to the net retardation of the liquid crystal material itself. On the other hand, when the plates are rubbed parallel to each other, at least three retardation plates are employed. The retardation plates can be incorporated into the front polarizer 46 which is to be used on the display. <IMAGE>
Patent GB-2023013-A (GB)
Title: Billiard-cue
IPC: A63D15/08
Filed: 1979-06-13
Abstract: A billiard-cue shaft 1 is substantially indeformable in the longitudinal direction but the tip 16, 24 is highly deformable in the longitudinal direction in order to absorb, by its deformation, the impact energy against the ball. The shaft is made of two plastics or metal tubes 2, 3 screwed together and contains adjustable balance weight 32. <IMAGE>