baber/WOPTO huggingface dataset:
Patent GB-556111-A (GB)
IPC: D01H5/26
Abstract: 556,111. Spinning yarns. PLATT BROS. & CO., Ltd., and WALKER, A. March 16, 1942, No. 3412. [Class 120 (ii)] A high-draft drawing apparatus for spinning and like frames has short apron rollers, e.g. of two spindles length, arranged in alignment and each adapted to accommodate two endless aprons driven by the second bottom roller and journaled in cap bars intermediately of the second top roller and second bottom roller while the circuit of each apron encloses a guide bar and the apron roller with the upper and lower flights of the apron extending directly from the bar to the roller ; each apron roller is thus adapted for easy removal and replacement without disturbance of adjoining apron rollers or stoppage of the frame. As shown the second bottom roller 18, which drives the aprons 26 is disposed in a lower position than usual and is journaled in an adjustable bearing 24 while the apron roller 25 is mounted in the cap bars 15 intermediate the roller 18 and the second top roller 13. The roller 25, of two spindles length, has bosses 25a, 25b for the two aprons 26 which are trained around a stationary guide bar 27 held loosely in the cap bars with its forward edge close to the nip of the front rollers 12, 17. and provided with pins 28 for guiding the aprons; alternatively, the aprons may be guided by flanges on the rollers. The roller 25 is weighted by a saddle 23a forming an extension of the front roller weighting hook 23.
Patent GB-1190870-A (GB)
Title: Improvements in or relating to Plug and Socket Conduit Couplings
Inventor: STRECKER HELMUT
IPC: F16L37/60
Filed: 1968-11-22
Abstract: 1,190,870. Pipe couplings. O. H. DRAGER, [trading as DRAGERWERK, HEINR. & BERNH. DRAGER]. 22 Nov., 1968, No. 55631/68. Heading F2G. A socket for a plug-and-socket conduit coupling comprises a fixed housing 6 arranged to receive the plug 19 of the coupling, a displaceable sleeve 22 carried by the housing and arranged to encircle the plug when the plug is received in the housing, balls 17 in the housing for engaging in the outside surface of the plug to retain the plug in the housing, a ball cage 14a in which the balls are laterally displaceably mounted and which is mounted in the housing so as to be displaceable, in an axial direction of the sleeve, between a locking position, in which said balls retain the plug, and a release position, in which the balls release the plug, a spring 18 urging the ball cage in the sense away from said release position and towards said locking position, and a ramp surface 12 with which the housing is provided and which is inclined to said axial direction and arranged to cam the balls laterally inwards to retain the plug in the housing, the sleeve being displaceable to displace the cage into the release position thereof. As shown, the housing 6 has a fixing flange 10 and has connected thereto, by a ring 7, a housing 1 containing a spring-loaded valve 3, and the ball cage is provided with lateral projections 15 which extend through longitudinal slots in the housing 6. The plug 19 has a flange 20 of a cross-section corresponding to the aperture in the sleeve 22. Insertion of the plug into the socket causes the balls to be moved radially outwards after which the balls, under the action of the spring 18, are moved radially inwards by the ramp surface 12 and into the groove 21 of the plug; to release the plug, the sleeve 22 is depressed to displace the ball cage 14 in the direction of the arrow P whereby the balls are movable radially outwards from the groove.
Patent GB-1442786-A (GB)
Title: Method for the production of pipe bends of thermoplastic material and apparatus for carrying out the method
IPC: B29C48/09
Filed: 1973-12-03
Abstract: 1442786 Extruding curved pipes GRANGES ESSEM PLAST AS 3 Dec 1973 [1 Dec 1972 55894/73 Heading B5A A pipe bend or helical pipe of high density polyethylene material and which has a uniform wall thickness around its periphery, is produced by extruding the material from an eccentric tubular die outlet 3, into a cooled die 15 having the curvature of the bend and through which the bend is drawn by haul-off wheels 23, 24 respectively located at the inner and outer boundaries of the bend. The bend may be cut to 45 to 90 degrees, and may be drawn from the die 15 along a helical path to produce the helical pipe. The wheels 23, 24 respectively engage the bend at surface speeds proportional to the inner and outer bend diameters. The eccentricity of the outlet 13 is obtained by the mounting of the die 8 for transverse adjustment by means of a clamping ring 9. The wheels 23, 24 are driven from a variable speed motor, via a chain 22 and sprocket drives from a chain wheel 23, and the difference in surface speeds between the wheels 23, 24 may be obtained by diameter difference, as shown, or by varying drive ratios from the motor. During extrusion the pipe is internally supported by pressurized air admitted through a mandrel passage 6 with the downstream end of the pipe closed by a plug. Prior to cutting the bend to a desired angle, the pipe wall is sealingly pressed together to prevent escape of the compressed air. The die 15 is cooled by water circulated from inlets 19 and outlets 20. The pipe may be cooled by a water spray between the die 15, and the haul-off.
Patent GB-1203277-A (GB)
Title: Apparatus for the production of formaldehyde
Inventor: OTTO PETER
IPC: C07C45/38
Filed: 1967-12-12
Abstract: 1,203,277. Catalytic apparatus. APPARATEUND CHEMIEANLAGENBAU REINSDORF. 12 Dec., 1967, No. 56348/67. Heading B1F. [Also in Division C2] A contact apparatus for the catalytic production of formaldehyde by the reaction in the presence of a silver catalyst between methanol and air, or methanol water vapour and air comprises a water heat exchanger, a silver catalyst bed that is positioned as close as possible to but beneath the heat exchanger and a gas entry opening for the bases beneath the catalyst bed, and a gas outlet for the products at the head of the heat exchanger.
Patent GB-1164159-A (GB)
Title: Improvements in or relating to Aircraft Landing Gear
Inventor: GEAR JOHN PHILIP
IPC: B64C25/52
Filed: 1966-12-16
Abstract: 1,164,159. Aircraft undercarriages. WESTLAND AIRCRAFT Ltd. 6 Dec., 1967 [16 Dec., 1966], No. 56536/66. Heading B7G. An undercarriage for an aircraft, particularly a helicopter, comprises, within the fuselage a transverse tunnel (not shown) housing a guide rail 13 with which is associated an arcuate rack 12 forming part of a leg 11, the rack being driven by a pinion 18, in turn driven through pinion 17 from motor 16, the pinion 18 and rack 12 being held in engagement by guiding means 19. The undercarriage is extended by driving a member 14 on one end of leg 11 into registry with a housing 24, Fig. 2, to which it is locked by toggle operated pins 23.
Patent GB-1189638-A (GB)
Title: Improvements in or relating to Filter Elements.
IPC: B01D46/06
Filed: 1967-12-14
Abstract: 1,189,638. Gas filter element STANDARD FILTERBAU G.m.b.H. 14 Dec., 1967 [17 Dec., 1966; 27 Sept., 1967], No. 56779/67. Heading B1T. A filter element, for hot gases, of flat, baglike form, open at the lower end, comprises a peripheral frame of rectangular, hollow crosssection 1, (2), with a fibrous mat 5, compressed between two layers of wire mesh 6, clamped against each side of the frame by a peripheral strip 4 of U-section which is bolted to the frame. Internal partitions 7 and external tubes 9, backed by supports 10, 12, urge the mats and meshes to assume the slightly corrugated form shown. The edges of the mats are turned inwards round the frame and separated from the meshes by strips 13 of aluminium foil, with adhesive coatings which engage the meshes and secure asbestos sealing strings 15 outside the meshes.
Patent GB-1195375-A (GB)
Title: Furnace Skids
Inventor: SALTER FRANK MICHAEL
IPC: F27D3/02
Filed: 1966-12-28
Abstract: 1,195,375. Skid rails for metal heating furnaces. BRITISH IRON & STEEL RESEARCH ASSOCIATION. 28 March, 1968 [28 Dec., 1966], No. 57915/66. Heading F4B. A furnace comprises skids for supporting an article to be heated, e.g. a metal slab, during its path through the furnace, the skids supporting the article during the latter part of its path having larger cross-sectional dimensions than those skids supporting the article in the initial part of its path, and the outer surfaces of the larger skids being covered by a layer of thermal insulating material. The skids are formed of cylindrical water-cooled pipes having welded thereto rectangular rails of ceramic material and the skids of larger and smaller dimensions are relatively displaced in a direction transversely of the article path. The point of transverse displacement coincides with the change in the dimensions of the skids.
Patent GB-1404990-A (GB)
Title: Fuel cell of the airmetal type
IPC: H01M8/08
Filed: 1972-12-15
Abstract: 1404990 Fuel cell COMPAGNIE GENERALE D'ELECTRICITE 15 Dec 1972 [20 Dec 1971 26 June 1972] 58186/72 Heading H1B A fuel cell of the metal-air type, e.g. zinc-air, is of multilayer tubular construction comprising in order:- an inner porous and inert metallic negative collector 2 defining a hollow space within which flows an alkaline electrolyte having a powered metal in suspension therein a porous hydrophilic insulating separator 4 permeable to the electrolyte but not to the powdered metal, an active porous conducting layer 6, where supplied oxidizing gas is reduced, and having a porous metallic positive collector 8 in contact therewith, and an inert water-repellant gas-permeable layer 10, means being provided for supplying oxidizing gas to the active layer 6 and for maintaining a flow of electrolyte plus metal powder in the hollow space. Both the collectors 2 and 8 may comprise a grid of Ni or stainless steel, the active layer 6 may be active carbon with a low concentration of silver, the electrolyte is a potash solution containing zinc powder and the oxidizing gas is air. The separator 4 which is permeable to the potash solution but not to the Z powder may comprise asbestos or a ceramic or plastics substance and the water-repellant layer 10, which permits oxidizing gas from outside the tube to penetrate to the active layer 6 but prevents the electrolyte from passing to the outside of the tube, may beformed of porous PTFE. In anothr embodiment, Fig. 3, the negative collector comprises an inner large grid 103 surrounded by a fine grid 102, both grids being formed of wires of copper or copper alloy, such as brass or bronze containing more than 50% copper. The positive collector comprises a large grid or apertured sleeve 109 fitting tight around a fine grid 108, each formed, for example, of Ni or stainless steel. The grid 103 is strong enough to resist radial compression thereof and the grid 102 is such that it will undergo permanent plastic deformation in order that, during manufacture, the reaction element tube may be built up starting with the grid 103 until the perforated sleeve or grid 109 is placed over the grid 108 whereupon the grid 109 is subjected to traction parallel to its axis. This results in plastic deformation of the grid 109 which causes a radial compression of the tube components about the grid 103 to ensure good contact between the components. The diameter of the reaction element is between 1 and 4 cm. and a number of the elements are connected in series, Fig. 5 (not shown), to form a battery.
Patent GB-1267610-A (GB)
Title: Improvements in or relating to shades for lights
IPC: F21V1/14
Filed: 1970-12-09
Abstract: 1,267,610. Lampshades. VEST G.m.b.H. 9 Dec., 1970 [13 Dec., 1969], No. 58390/70. Heading F4R. A shade for a lamp is made of a number of similar laminar elements 11 having at two opposite lateral edges 23 hook-like projections 24, 25 and having in their other two opposite edges between these projections recesses 31, 32 for the suspension of the hook-like projections of adjacent elements, the elements being bent so that all the elements of a first row are each fastened by their two lateral edges which have hook-like projections to a supporting member, their recesses 31, 32, being so offset in relation to the hook-like projections that the adjacent row of similar elements are offset, and each further row also being similarly offset to form a three dimensional shade body. Various embodiments of basic laminar elements are described where the edges between the lateral edges are curved in the same or in opposite directions, or where the lateral edges are convergent. The elements for the supporting row of the shade may have eyelets to engage a supporting ring, Fig. 5 (not shown). The basic elements may be made of metal or various named plastics materials.
Patent GB-1407040-A (GB)
Title: Lead-impregnated sintered ferrous alloy
IPC: F01L3/02
Filed: 1972-12-19
Abstract: 1407040 Sintered ferrous alloy; leadimpregnation NISSAN MOTOR CO Ltd and HITACHI POWDERED METALS CO Ltd 19 Dec 1972 [27 Dec 1971] 58450/72 Headings C7A and C7D A lead-impregnated sintered ferrous alloy, especially suited for the valve-seats of internal combustion alloys is formed of a matrix comprising, by weight:- 0.6 to 1.2% carbon 2 to 4% chromium 0.2 to 0.5% molybdenum 0.2 to 0.4% vanadium optionally 1 to 4% nickel the balance being iron, and the pores of the matrix being filled with lead in an amount exceeding 10 per cent by weight of the matrix. In alternative embodiments, the lead can be incorporated as an alloy with e.g. tin, antimony, cadmium or bismuth. Sintering should be effected in a reducing atmosphere.
Patent GB-1344648-A (GB)
Title: Electronic timepieces
IPC: G04G5/02
Filed: 1971-12-16
Abstract: 1344648 Electronic watches SUWA SEIKOSHA K K 16 Dec 1971 [26 Dec 1970] 58489/71 Heading G3T An electronic watch comprises a crystal oscillator, an integrated circuit MOSFET binary frequency divider chain, a transistor switching bridge driving a pulse driven stepping motor coupled to hands via gears, and a switch which is repeatedly pressed for setting and correcting of the time indication. In Fig.1, the oscillator B1 drives the divider chain F1...Fn (detailed) Fig.2 (not shown) outputs from which are converted by a delay circuit D and logic gates into two pairs of pulse trains  O 1 O 4  and O 2 O 3  the pulses of each pair being in anti-phase and occurring midway between pulses of the other pair Fig.4 (not shown). The pulses render transistor pairs T 1 T 4  and T 2 T 3  conductive alternately to pass current pulses through the motor field L alternately in opposite directions. The motor rotates through 60 degrees each sec, i.e. at each pulse, the rotor being a permanent magnet having 6 poles. To speed up the motor when resetting or correcting a normally open switch SW is repeatedly closed and opened. When closed a reset signal PR derived from voltage source V DD , is applied to all the divider stages stopping operation thereof, and a monostable multivibrator T 7 , T 8 , C 1 , C 2 , R 2- R 5 , is triggered. The output therefrom switches on transistors T 5 T 6  so that current flows through field winding L from b to a. The switch SW is then opened and the divider operates again such that transistors T 1  T 4  conduct passing current from a to b. By repeated operation of SW the motor can be stepped and the second hand driven forward more quickly than normal.
Patent GB-1421077-A (GB)
Title: Radiation sensitive recording material
IPC: G03C1/685
Filed: 1973-12-21
Abstract: 1421077 Naphthopyran derivatives LICENTIA PATENT-VERWALTUNGS-GmbH 21 Dec 1973 [22 Dec 1972] 59289/73 Heading C2C [Also in Division G2] 2 - [Alpha - phenyl - beta - (1 - naphthyl) - vinyl] - 2 - phenoxy - 2H - naphtho - [2,1 - b]pyran is prepared by condensing 2-benzylnaphtho-[2,1-b] pyrylium perchlorate with 1-naphthaldehyde in hot acetic acid solution followed by reacting the product with sodium phenolate in methanol.
Patent GB-1458828-A (GB)
Title: Non-contact type dimension measuring device
IPC: G01B11/10
Filed: 1973-12-19
Abstract: 1458828 Photo-electric dimension measurement DAIDO SEIKO KK 19 Dec 1973 [27 Dec 1972] 59320/73 Heading G1A To determine a linear dimension of a body such as a moving steel rod 3, Fig. 1, it is illuminated with a collimated light beam and the shadow so formed is projected on to a line of photo-detectors 9 by a lens 4 and slit 5. The number of detectors in the shadow at any instant is a measure of the dimension of the body, and is averaged over a period of time to give a mean value of the dimension. The line of detectors need not be continuous, and those detectors in the central portion of the shadow can be omitted. Fig. 3 shows a circuit which counts the number of detectors in shadow at a given time. It also takes an average of the count over a period of time, so that the accuracy of the system increases; this increase is obtained only if the body is vibrated, either deliberately or as a result of its exit from a drawing or machining process. The detectors 9 are connected to amplifier 10, AND gates 11, one bit registers 12, sequential pulse generator 17, AND gates 14, OR gate 15 and counter 16. When generator 13 is pulsed the detector signals enter the registers, and then a sequence of pulses from generator 17 passes the register contents to the OR gate 15 and counter 16. A further generator 19 emits a pulse, say once per second, so that the average count over one second is also made, at register 20, and displayed at 21. If two Schmitt triggers are connected to each detector, and have thresholds at one half the maximum detector output and at the maximum detector output respectively, the sensitivity of the measuring device is effectively doubled; alternatively the total number of detectors can be halved while the overall sensitivity is maintained. Further triggers can be used to increase the sensitivity even more.
Patent GB-1310740-A (GB)
Title: Compact forced flow warm air furnace
IPC: F24H3/10
Filed: 1970-12-15
Abstract: 1310740 Air heaters DUNHAM BUSH Inc 15 Dec 1970 [25 June 1970] 59598/70 Heading F4S A gas fired forced flow air heater 10, comprises an outer casing 11, an inner jacket 20 within and spaced from the casing 11, and a cubic stainless steel heat exchanger 21 which defines a combustion chamber within and spaced from the inner jacket 20. Return air from opening 26 is drawn through the space between the outer casing and inner jacket to chamber 27 and enters blower 28 which discharges it through outlet 29A into the space within inner jacket 20 around heat exchanger 21. The air flows upwardly around heat exchanger 21 and through tubes 21A, 21A<SP>1</SP> extending therethrough to an upper air supply outlet duct 24. Combustion air, drawn through vents (not shown) in the front face of the outer casing 11, or through a sealed duct system (not shown) is supplied by blower 34, driven from the same motor as blower 30, to burner assembly 23 which fires into the combustion chamber, the combustion products exhausting via outlet 38. Optionally a cooling coil may be located adjacent the air supply outlet duct 24. The air heater may be mounted horizontally instead of vertically.
Patent GB-1349660-A (GB)
Title: Ferroelectric composites and method of manufacturing the same
IPC: C04B35/46
Filed: 1971-12-30
Abstract: 1349660 Piezoelectric compositions TDK ELECTRONICS CO Ltd 30 Dec 1971 [30 Dee 1970 (2)] 60857/71 Heading C1J A ferroelectric consists of a solid solution of either Pb(Li 1 / 3 Nb 1 / 3 W 1 / 3 )O 3  or Pb(Li 1 / 4 La 1 / 4 W 1 / 2 )O 3  with PbTiO 3  and PbZrO 3  and falls on or in the area ABCD of Fig. 1 or Fig. 2 respectively.
Patent GB-1303904-A (GB)
IPC: B41F31/00
Filed: 1970-12-23
Abstract: 1303904 Rotary presses; impression blankets ING C OLIVETTI & CO SpA 23 Dec 1970 [24 Dec 1969 13 April 1970] 61214/70 Heading B6C An impression cylinder in a rotary press is covered with a blanket comprising a sheet of polytetrafluoroethylene 0À08 mm. thick adhesively bonded to a rubber sheet. The polytetrafluoroethylene is triboelectrically chargeable and in use with paper copy sheets is said to assume an electrical charge for attracting the ink from the printing or offset cylinder to the paper fed between such cylinder and the impression cylinder. The lithographic press described in the Specification uses a waterbased ink and an oil dampener.
Patent GB-1294119-A (GB)
Title: An electrical circuit arrangement for generating current oscillations
IPC: H03B9/12
Filed: 1969-12-23
Abstract: 1294119 Semi-conductor circuits UNITED AIRCRAFT CORP 23 Dec 1969 [6 Feb 1969] 62598/69 Heading H3T [Also in Division H1] A bulk negative resistance device includes a semi-conductor body comprising an active region 20 and a contiguous region 18 in which the electric field does not reach the oscillation threshold value and which separates the active region 20 from the cathode 22. In this way nucleation of Gunn-type domains is avoided and one of two modes of oscillation occurs instead in a resonant circuit. In the first mode, a high electric field region exists at the anode 24 which is unstable in a low-frequency resonant circuit. In the second mode oscillations of the field occur uniformly throughout the region 20 when the device is placed in a high-frequency resonant circuit. The lower field condition of the inactive region 18 may be achieved by precise doping or preferably, as shown, by making the region 18 of relatively large cross-section. A further large cross-section region may additionally be provided to separate the active region 20 from the anode 24 to produce symmetrical oscillation, and to permit nucleation of Gunn domains upon application of pulses of one polarity a notch may be provided between the active region and one of the larger cross-section regions. In the latter case the device will produce transit-time limited pulses when the pulsed input is of one polarity, and resonant-circuit-controlled pulses when the input pulses are of the other polarity. Various modifications of the illustrated shape are described in which the active region is of truncated pyramidal form, the faces of the pyramid being either planar or curved. In each case the active region tapers towards the anode. In another form the device comprises a stepped epitaxial layer (70), Fig. 15 (not shown), on a highly conductive substrate, the lower part of the stepped layer constituting the active region and carrying the anode (74) while the higher part carries the cathode (76). An array of independent oscillators may be formed in a single semi-conductor body carrying a common cathode by forming several active mesa portions (62), Fig. 14 (not shown), each bearing a separate anode. The cathode and anode may be ohmic or non-ohmic. and carrying the anode (74) while the higher part carries the cathode (76). An array of independent oscillators may be formed in a single semi-conductor body carrying a common cathode by forming several active mesa portions (62), Fig. 14 (not shown), each bearing a separate anode. The cathode and anode may be ohmic or non-ohmic.
Patent GB-656587-A (GB)
Abstract: 656,587. Blasting devices. DU PONT DE NEMOURS & CO., E. I. Oct. 1, 1948, No. 25609. Convention date, Oct. 1, 1947. [Class 9 (i)] [Also in Group XII] An explosive device for tapping blast furnaces and the like comprises a charge 23 of detonating explosive having a conically recessed end 25 and encased in a sheath 30 of synthetic resin, the sheathed charge being placed in a container 32 of heat-insulating material, e.g. asbestos. A detonator 26 placed at the apex of the charge is adapted for electric ignition (lead wires not shown). The explosive may be TNT, pentaerythritol tetranitrate or mixtures of these and other explosives. The cone may be lined with metal, e.g. steel or copper and the cone angle may be 45 degrees. The length of the "stand-off" formed by the container in front of the recess 25 is preferably two to four times the diameter of the charge. To tap a furnace a hole is drilled in the fire clay filling the tap hole. A rod 24 is then used to push the device (Fig. 1) into position with the recess 25 directed towards the furnace. The rod 24 is then removed and the circuit to the detonator completed. Specification 610,106 is referred to.