baber/WOPTO huggingface dataset:
Patent GB-1427532-A (GB)
Title: Method for positioning an electrode-tool with respect to a  workpiece to be machined by electro-erosison
IPC: B23H1/02
Filed: 1973-04-03
Abstract: 1427532 Automatic control of spark erosion ATELIERS DES CHARMILLES SA 3 April 1973 [21 April 1972] 15858/73 Heading G3R The position of-a spark erosion electrode tool is controlled in accordance with measurements of discharge current initiation delay time and the rate of occurrence of short-circuits during pulse voltage application. As shown, a working gap 1 between a tool 21 and workpiece 20 receives pulses from a D.C. source 23 over a switching transistor T 1 . The duration and frequency of the pulses are determined by a trigger circuit 24 and flip-flops 25, 26. The movement of tool 21 is controlled by a servomechanism 22 supplied by a differential amplifier 34 which receives a first input representing the gap voltage over a switch S5, and a second input over an integrator 35 from a delay time detector 31 which compares the tool voltage with a reference voltage set on a potentiometer R4, R5. A similar detector 30 responds to low voltages during discharge indicating short circuit conditions. Its output feeds a memory circuit 32 which can be varied only during an applied voltage pulse as determined by flip-flop 25. The output of memory 32 is connected through an integrator 33 to form a third input for the amplifier 34. An input representing current discharge delay time can alternatively be obtained from an AND gate 36 by resetting a switch S3. The gap size is thus controlled by balancing the effects of increasing delay time and increasing short circuits to produce optimum forming conditions. The control system may cause the tool 21 to oscillate about the optimum position.
Patent GB-144735-A (GB)
Title: Apparatus for the insertion of stud bolts
IPC: B25B23/10
Filed: 1920-06-12
Abstract: 144,735. Kolb &. Sorgel. June 26, 1918, [Convention date]. Addition to 144,717. Studding-chucks. - The relative movement of the part p in the casing a of the tool described in the parent Specification is effected by means of square threads. As shown in Fig. 1, the surface of the upper part of the casing a and the dogs on the part p have left-handed square threads. A nut r is screwed over both parts and locked by a screw s. On reversal of the tool, the part p is thus screwed downwards to open the valve k. In a modification the casing and the part p have right-handed threads of over 10 degrees pitch and the part p is fitted with a collar coacting with a screwed cap secured to the casing to limit the outward movement. The valve is in this case dispensed with since, on reversal, the piston in the upper chamber is automatically withdrawn to relieve the pressure. The Specification as open to inspection under Sect. 91 (3) (a) describes a modification, Fig. 2 (Cancelled), in which the part p and the casing have right-handed threads of over 5 degrees, a bolt q serving to limit the motion. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1132896-A (GB)
Title: Tread reinforcement belt for pneumatic tyre
IPC: B60C9/18
Filed: 1966-04-12
Abstract: 1,132,896. Pneumatic tyres. UNIROYAL ENGLEBERT FRANCE. 12 April, 1966 [14 April, 1965], No. 15968/66. Heading B7C. A radial cord carcass pneumatic tyre has a breaker comprising at least one heterogeneous ply constituted by a layer of parallel cords embedded between a layer of softer rubber having a Shore A hardness of under 70 and a layer of harder rubber having a Shore A hardness of over 72. Two or more such plies may be placed one on another with any sequence of the rubber layers, and in a modification a ply of cords embedded in a homogeneous layer of rubber may be placed between a pair of heterogeneous plies.
Patent GB-698881-A (GB)
Title: A combined hurdle and feeding trough
IPC: A01K5/01
Filed: 1950-06-27
Abstract: 698,881. Hurdles. CRANFIELD, H. S., and CAULK,. T. LOND-. Sent. 20, 1951 [June 27, 1950], No. 16008/50. Class 45 Relates to a combined hurdle and feeding device having a trough 11 supported and secured in the lower part of the hurdle between end members and wherein free access to the trough from either side of the hurdle can be shut off at will. The hurdle comprises a frame 8 consisting of channelsection uprights connected by tie bars 9-9b supported by inverted-V-shaped members 13, 13a. A metal guard plate 10 is hinged to the tie rod 9b and is arranged so that it can be lifted by a handle 15 from retaining lugs 14 on one side of the feeding trough and swung over to the other side of the trough to be retained in another set of lugs 14. Access by animals to the trough while it is being replenished with food is thus prevented. The supports 13, 13a are. covered with metal plates to act as windbreaks and wooden posts 7, 7a to which other fencing may be secured are attached . to the frame 8.
Patent GB-622656-A (GB)
Title: Improvements in or relating to circuits for producing a sawtooth-shaped current in the deflecting coils of a cathode-ray tube
IPC: H03K4/39
Filed: 1946-05-27
Abstract: 622,656. Sawtooth generating circuits. PHILIPS LAMPS, Ltd. May 27, 1946, No. 16013. Convention date, March 20, 1942. Drawings to Specification. [Class 40 (vi)] In a circuit for producing a sawtooth current in deflecting coils by applying a sawtooth voltage to a high impedance valve having the coils in its output circuit, a choke through which at least part of the D.C. component of the sawtooth current flows, is connected in parallel with the coils, the inductance of the choke being made approximately equal to 10r2T where r2 is the resistance of the deflecting coils and T the period of the sawtooth current.
Patent GB-249376-A (GB)
Title: Apparatus for playing a game
IPC: A63F3/00
Filed: 1925-06-22
Abstract: 249,376. Mack, W. June 22, 1925. Board games. - An apparatus for playing a board game comprises in combination a board provided with goals m and marked with goal spaces g, penalty areas h, a centre line b, kick-off areas l, corner areas i, and divided into a number of squares certain of which are distinguished from the others (for example, by colouring or cross-hatching) to mark the starting positions of the men or pieces, these men or pieces, Fig. 3, being distinguished according to the side to which they belong by different colouring and according to their places in the side by shape, size and signs marked on their heads. The " ball " is shown in Fig. 4. Reference has been directed by the Comptroller to Specifications 1387/03 and 27238/04.
Patent GB-1172279-A (GB)
Title: Apparatus for Melt Extruding Organic Thermoplastic Polymeric Material, particularly for Melt Spinning such Material
IPC: B29C48/05
Filed: 1967-04-07
Abstract: 1,172,279. Melt spinning apparatus. BARMAG BARMER MASCHINENFABRIK A.G. 7 April, 1967 [9 April, 1966], No. 16072/62. Heading B5B. A melt-spinning apparatus comprises a cylindrical spinning pack housing 11 (Fig. 1) provided with a closure in the form of a piston 10 having an axial passageway 13 for the melt and a feed member 1 which is part of the main spinning apparatus and is provided with a melt inlet channel 2 coaxial with the passageway 13. Integral with the feed member 1 is a support member 3 for the housing 11. The member 3 is provided with an opening 4 for the filaments extruded through the orifices 8 in the spinneret plate 7 and with two guide rails 5. The underside of the feed member 1 has a sloping surface at 6. Between the bottom of the piston 10 and the feed side spinneret 7 contained in the housing 11 is positioned a metal annular spring diaphragm 9 the edge portion of the lower surface of which is soldered or welded to the rim of the inlet face of the spinneret 7 and the central position of the upper surface of which is welded or soldered to the raised portion of the undersurface of the piston 10 surrounding the outlet of the duct 13 in the piston. Before the housing 11 containing the spinning pack is inserted in the spinning head 3 the diaphragm is in an unflexed state. When the housing 11 is inserted into the space or recess between the parts 1 and 3 of the spinning head between the parallel guide rails 5, a sealing element 12 located at the top of the piston 10 slides along the sloping portion 6 of the undersurface of the member 1 until the feed duct 2 and piston bore 13 are in alignment. When the spinning pack is in this operative position, the diaphragm 9 is flexed downwards and acts as a spring urging the seal 12 against the portion of the underside of the feed member 1 surrounding the inlet duct 2. This portion of the underside is parallel to the upper surface of the element 12, the two surfaces function as the faces of a joint between the feed member and the piston or closure member of the spinning pack. In the modification shown in Fig. 2 the piston 10 is urged towards the seal 12 by an annular disc 15 of deformable resilient material which functions as a plate spring. The chamber between the inlet face of the spinneret plate 7 and the underside of the piston 10 is sealed by sealing rings or gaskets 16 and 17 of resilient material. The sealing effect of the two rings increases as the pressure of the melt rises.
Patent GB-1215933-A (GB)
Title: Apparatus for feeding rod-like articles
IPC: B65G51/02
Filed: 1967-04-07
Abstract: 1,215,933. Pipe couplings. MOLINS MACHINE CO. Ltd., J. E. NEW and G. R. BENNETT. 13 March, 1968 [7 April, 1967], No. 16110/67. Heading F2G. A member 1 for connecting tubes 7, 8, forming part of a conduit through which rodlike articles are fed, is so constructed that its ends can be pushed over the ends of the tubes to connect the tubes and has an intermediate portion forming a continuation of each of the tubes, the inner surface of the portion being substantially flush with the inner surfaces of the tubes; at least the intermediate portion of the member consists wholly of transparent material. As shown, packing elements 9 and washers 10 ensure air-tight connections with the tubes, and the inner surface of the intermediate portion converges in the intended direction of flow of the articles.
Patent GB-1379651-A (GB)
Title: Electrographic printer
IPC: G03G15/28
Filed: 1972-04-07
Abstract: 1379651 Electrostatic printing VARIAN ASSOCIATES 7 April 1972 [8 April 1971] 16224/72 Heading G2H In an electrographic printer a transparant photo-conductor drum 3 is imaged by optically projecting the image to be printed from within the drum using a suitable mirror arrangement. As shown Fig. 2, an original imaged film 7 is projected by lamp 9, lens 11 and 12 and mirrors 13 and 14 such that a photo-conductive layer 6 on the drum receives a latent image from within the drum. The mirrors 13 and 14 and a mask 10 adjacent a glass wall 4 of the drum are of such dimensions that the image of the film 7 is exposed to the drum layer 6 in strip-like portions the entire image on the film 7 being transmitted by moving the latter in unison with the drum. Depending on whether a mirror 34 Fig. 1, is wholly reflective or not the image on the film 7 to be printed may be viewed by the operator on a screen 33 either before or simultaneously with the printing process. If wholly reflective the mirror 34 is pivoted away from the drum 3 prior to printing. The latent image is transferred to a contacting electrographic web 15 which is pressed into contact with the drum by a conductive sponge roller 16 which is also one electrode of an electric field system the other electrode being a coating of tin oxide 5 on the glass wall 4 of the drum. The web bearing the latent image is cut into suitable sheet form by cutters 16 before being developed by a roller 21 of porous wall structure which contains a liquid developer. The drum 3 is driven in co-operative relationship with the film 7, the drive to the drum comprising rollers within and outside the drum and the contact therewith.
Patent GB-878370-A (GB)
Title: Improvements in or relating to the glazing of buildings
Inventor: HOWARTH THOMAS FREDERICK
IPC: E04D3/365
Filed: 1959-05-12
Abstract: 878,370. Escape windows. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 20, 1960 [May 12, 1959], No. 16272/59. Class 47. [Also in Group X] A roof light comprises a corrugated plastic sheet 1 supported along one corrugated edge solely on a thermoplastic sheet ledge 7 attached to the roof structure by belts 6 supporting the adjacent roof sheets 2, the non-corrugated edges of the sheet 1 being in contact with the underside of the adjacent roof structure or covering 4 which is not heat softenable and the sheet I may be attached to the roof covering by a screw 9 and a fusible washer 10.
Patent GB-1358061-A (GB)
Title: Methods of strengthening glass articles
IPC: B24B9/10
Filed: 1971-05-21
Abstract: 1358061 Abrading glass articles GLAVERBEL 21 May 1971 16285/71 Heading B3D [Also in Divisions B5 and C1] An edge n the edges of a glass article is strengthened by smoothing at least a portion of the surface of the edge by abrasion and then subjecting the edge to a rectifying treatment before and/or after chemical tempering, the rectifying treatment removing or reducing the impairment of the surface by faults liable to cause stress concentrations under tensile loading. The invention is of particular use for glass sheets which are stacked in packing, but glass bowls or laminated panels are also disclosed. Parts not to be treated may be protected, e.g. by a matrix or a steel frame holding the glass or by a liquid film, paraffin wax or a polymer film. The abrasion may be effected in two or more stages using a finer grade of material in the second stage. Abrasive strips of canvas or paper carrying alumina or emery or silicon carbide; grooved wheels surfaced with grains of alumina or silicon carbide or a diamido grinding whele may be used. During abrasion, the glass work may be wetted with mineral oil or water or a mixture thereof in a jet so as to cool the edges. The chemical tempering may be by immersion or by spraying from jets although a gas, a paste or a vapour are also referred to. For soda lime glass, larger ions such as potassium, rubidium or cesium may replace the sodium, or lithium may be used. Examples given are KNO 3 ; CsNO 3  + Cs 2 CO 3 ; LiNO 3  + NaCl for immersion and KNO 3  for spraying. A direct or alternating electric field may be used to promote ion diffusion. Alternatively, diffusion may be promoted by the use of sound or ultrasonic waves. The rectifying treatment may be by use of a fine polishing flame, but only before the chemical tempering or, the preferred method, by etching with a fluorine containing medium. Examples given are HF + H 2 SO 4 ; HF; NH 4 F 2 ; NaF + H 2 SO 4 . Examples are given, using glass in the following ranges in percentages by weight: SiO 2  64- 72; Na 2 O 11-14À2; CaO 6-8À1; MgO 4À5-7; Al 2 O 3  1-6; B 2 O 3  0 or 8. Before or after the chemical step, a coating layer may be provided on the articles, either a hard coating or one with optical properties.
Patent GB-321389-A (GB)
Title: Improvements in or relating to television apparatus and the like
IPC: H04N3/04
Filed: 1928-06-05
Abstract: 321,389. Baird, J. L., and Television, Ltd. June 5, 1928. Television.-A television apparatus for reproducing images in natural colour comprises a plurality of light-sensitive cells of different colour sensitivity at the transmitter, a plurality of correspondingly coloured lamps at the receiver, and means for operating each cell successively with its corresponding lamp. The scanning disc 2, fig. 1, at the transmitter is provided with three sets of spirally arranged holes 4, 6, 8, light from each set completely traversing the object 12. Light-filters of blue, red and green respectively cover the three sets of holes, and a commutator 22 and slip rings 24 which rotate on the same shaft 36 as the disc 2 connect the particular light-sensitive device 14, 16, or 18 which is sensitive to the colour of the light falling on the object, to the outgoing amplifier 20. At the receiver a disc 40, Fig. 2, similar to the transmitting disc 2 rotates synchronously with the latter, a similar arrangement of slip rings 52 and commutator 50 serving to pass the incoming signals to the appropriate lamp 44, 46 or 48, which emits light of the same colour as that with which the object is being scanned at that instant. A translucent screen 68 may be placed adjacent the disc 40 to serve as a viewing screen for the image. The boles in the disc 40 may be provided with colour filters if desired. Overlapping of the exploration bands may be introduced by suitable modification of the scanning discs.
Patent GB-816879-A (GB)
Title: Process and means for precompressing oxygen-containing gas for the formation of combustible mixture in a pulsating combustion chamber
IPC: F02K7/04
Filed: 1956-05-28
Abstract: 816,879. Jet propulsion plant. SCHMIDT, P. May 28, 1956, No. 16391/56. Class 110 (3). [Also in Group XII] An intermittently-operating jet-propulsion unit is shown in Fig. 5 and comprises a combustion chamber 1 having a non-return inlet valve 47 and an open outlet 7. A main fuel injector 11 is provided also starting fuel and air connections 14, 15 and an igniter 17. The combustion chamber is disposed within a tubular casing 43 having at its forward end a non-return inlet valve 45. The pressure of the air in front of the combustion chamber inlet valve 47 is increased by means of the pressure-wave resulting from the discharge of combustion gases through the combustion chamber outlet 7. The pressure waves pass forwardly through the annular passage between the combustion chamber and the casing. The increase in pressure results not only from the pressure wave arriving directly but also from the pressure wave which passes to the inner face of the non-return valve 45 and is there reflected back to the region of the combustion chamber inlet. The casing 43 is formed with nozzle throat portions 44, 46, 49, the throat 44 reducing the speed of the air entering through the inlet valve 45, the throat 46 increasing the speed of the air flowing past the combustion chamber outlet and the throat 49 producing better outflow of the gases and very large jet thrust. Specification 747,561 is referred to.
Patent GB-217425-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M1/00
Filed: 1923-06-25
Abstract: 217,425. Halliday, T. E., and Halliday Engineering Co., Ltd. June 25, 1923. Spray carburettors.-Moistened air is added to the mixture through a valve, the stem of which passes through and' is adjustably connected to the spindle of the throttle, valve. A nozzle C discharges into a choke tube B surrounded by other choke tubes and by a suction actuated spring-loaded valve D the flange D<2> of which controls air inlets E. The spindle H<2> of the throttle valve H is hollow and through it is passed the stem K<2> of a barrel type valve K which controls additional air and into the interior of which a water nozzle M discharges. The moistened air passes to the mixture stream through ports J. Arms H<3>, K<3> on the throttle and extra air valves may be adjustably interconnected by a slot and pin H<4> or by a spring and stop.
Patent GB-273689-A (GB)
Title: Improvements in or relating to apparatus for expressing liquid constituents from materials of various kinds
IPC: B30B9/20
Filed: 1927-06-21
Abstract: 273,689. Krupp Grusonwerk Akt.- Ges., F. June 29, 1926, [Convention date]. Addition to 248,372. Extrusion presses.-In presses as described in the parent Specification which comprise blades or knives 5 which force the material into the press chamber 3 and rotary knives or scrapers 20 which promote the discharge of the pressed material, the forcing device and the discharge device are linked together so that they move simultaneously but have different lengths of travel. As shown, the blade 5 is secured to a holder 6 which can move longitudinally relatively to the spindle., being suspended by plates 8 from a lever 9 turning on a pivot 10. The lever 9 is connected by rods 12, 14 to a lever 13 which has a pivot 17 and is attached to a ring 19 mounted on a knifeholder 18. The rods 12, 14 are coupled by a threaded sleeve 16 which can be rotated by a handle 15 to vary the length of the connection between the levers. The knives 20 are thus raised through a greater distance as the blade is lifted by increase of pressure at the inlet of the press chamber under control of a spring 21. The relative lengths of travel of the parts 5, 20 may be varied by altering the position of the connection of the link to the lever 13 relatively to the pivot 17.
Patent GB-933837-A (GB)
Title: Improvements in or relating to road forms
Inventor: HALL JAMES
IPC: E01C19/50
Filed: 1961-05-06
Abstract: 933,837. Shuttering for casting concrete. JAMES GRUNDY & CO. Ltd. April 19, 1962 [May 6, 1961], No. 16536/61. Class 20 (2). Shuttering for casting marginal strips X between two of which roads are cast, comprises forms 10 held parallel and opened and closed by lifting devices each having points to which lifting means are connected, two points for causing inward movement of the forms to casting position and another point for causing outward movement to release the casting. The lifting device consists of two bars 14 between the ends of which are pivoted arms 13 adapted to be connected to the forms 10. A vertical bar 16 is slidable between the bars 14 and is pivotally connected to the ends of levers 15 pivoted on the arms 13. When lifting means is connected to the upper end of the bar 16 the arms 13 and forms are moved apart to release the casting. When lifting means is connected to the outer ends of the levers 15 the forms are moved towards one another into casting position. The forms are also held the correct distance apart by spacers 20, Fig. 7, each comprising a cross-piece 20a and pins 20c adapted to be wedged in sockets in the forms. The forms are levelled by jacks. Specification 699,926 is referred to.