baber/WOPTO huggingface dataset:
Patent GB-901197-A (GB)
Title: Improvements in or modifications of a method of jointing textile belting or webbing
Inventor: FRY SYDNEY
IPC: F16G3/10
Filed: 1961-04-17
Abstract: 901,197. Seaming non-metallic sheet material. BRITISH BELTING & ASBESTOS Ltd. April 17, 1961, No. 13735/61. Drawings to Specification. Addition to 705,303. Class 42 (1). [Also in Group XXV] A method of jointing textile belting or webbing comprises providing the two ends to be joined with complementary notched or toothed formations across the full width of the belting or webbing and adapted to provide relatively long jointing faces extending substantially lengthwise of the belting or webbing, fitting the notched or toothed formations together so as to leave a small gap between the edges of the formations, filling the gap with a polyurethane compound while still liquid and curing by the application of heat. The notches are preferably V-shaped with the sides thereof at not more than 30 degrees with the edge of the belt or web and preferably at 2-3 degrees thereto. The curing may be done in an oven or between the platens of a press under slight pressure and various filler pigments, plasticizers and/or stabilizers may be added to the polyurethane compound.
Patent GB-1412577-A (GB)
Title: Percussion igniter for projectiles
IPC: F42C19/10
Filed: 1974-03-28
Abstract: 1412577 Percussion igniters VALINOR ANSTALT 28 March 1974 [5 Oct 1973] 13792/74 Heading F3A A percussion igniter for propellants, comprises: a primer 6, Fig. 1; and a movable striker resting on a shoulder 4 of a housing 2; the striker having a concave surface 15, which, when the striker is loaded by the pressure of the propellant gases is forcibly seated on the shoulder and deformed to provide a gas-seal (Fig. 3, not shown). The striker is driven into the primer when an extension 16 of the striker is struck by a hammer of the firing apparatus. The striker is re-seated on the shoulder 4 by the propellant gas pressure and simultaneously crushes the extension 16 against the hammer. The extension 16 may also take the form of a solid rod with a weakening groove; or a spring. The igniter is used for propellants contained cartridge cases or contained in the projectiles themselves.
Patent GB-400314-A (GB)
Title: Improvements in or relating to advertising or display apparatus
IPC: G09F19/14
Filed: 1932-05-14
Abstract: 400,314. Changing signs. MEKELEK ENGINEERING, Ltd., 57, Victoria Street, and BLACKBURN, C. L., 2, Ryder Street, both in London. May 14, 1932, No. 13870. [Class 3 (i).] In advertising or display apparatus in which colour or other changes occur with change in the relative positions of an observer, a lens, and a screen &c. located approximately in the focus of the lens and having visually distinguishable portions, opaque partitions G are provided extending rearward of the lens B toward the screen &c. C to cut off confused light rays at acute angles of vision. When a plurality of lenses is employed, the partitions may be omitted from some of the lenses, e.g. at the extreme ends. The partitions may be whitened and mirrors may be provided on the inner walls of the casing between the lenses and the screen to give the effect of an extended screen. The screen C may comprise coloured translucent strips backed by a light diffusing sheet D lit by lamps, or may be opaque and be illuminated by light reaching it from the front through the lenses B. In another form, the screen is built up of uniformly or vari-coloured tubular lamps spaced to give a flashing effect, or alternatively an opaque slotted grid in the lens foci has a light source at the rear. The display matter may be in the form of a stencil in front of the lens or lenses, or may comprise moulding on the lens surface or small-angle prisms K, Fig. 5, located in front of the lens B. Fig. 6 shows a modification in which daylight passing through a horizontal screen C reaches the eye after reflection by a mirror L, and the display consists of projections L<1> inclined to the mirror surface. The parts may also be arranged as a daylight sign with the lenses between the mirror and the observer. The lenses may be disposed in both columns and rows. The screen C may be reciprocated or rotated in its own plane, or may be carried on a moving endless band or on a rotating drum. The lenses B may alternatively be moved, or the mirror L, Fig. 6, may be rocked, e.g. by a thermal switch.
Patent GB-399255-A (GB)
Title: Improvements relating to automatic weighing machines
IPC: G01G13/00
Filed: 1932-05-14
Abstract: 399,255. Automatic-feed weighers. SIMON, Ltd., H. and BRIAN, J. C., Bird Hall Lane, Cheadle Heath, near Manchester. May 14, 1932, No. 13921. [Class 143.] An automatic weighing-machine is provided with electrical means which when energized cause the locking in the closed position of a mechanically-operated feed gate and the release of the door lock of the weigh bucket, the electrical means being inoperative to release the door lock unless the feed gate is closed. As shown in Fig. 3, during the filling of the weigh bucket a, the feed-gate lever g mounted on a pivot h is urged by a weight-carrying cradle r towards the closing position of the feed gate d as a pin i on the descending bucket allows the lever to rotate. When the dribble feed position is reached the cradle r rests on a stop r<1> and becomes inoperative and the pin i leaves the lever g which is then supported on a trip trigger n until at the completion of the charge, a projection o on the bucket displaces the trigger and the lever g rocks to complete the cuff-off. A horizontal portion of the lever g raises a catch 10, Fig. 2, and allows a threearmed lever 6, 7, 9 carrying a mercury switch 4 to rock and close the switch contacts. When a series of weighing machines are employed for blending grain in definite proportions the mercurv switches of the machines are connected in series to ensure, as described below, simultaneous discharge of all the machines. The closure of the last mercury switch completes the circuit through an electromagnet u in each machine. The electromagnet rocks a lever v, w into the position shown in Fig. 2, where it is lever 2 to allow the discharge door c to open. In opening, the discharge door raises the mercury switch to its open position where it is retained by a catch 8, the magnets u being thus de-energized. After discharge, the bucket door closes and the catch lever 2 returns to locking position, at the same time displacing the catch y to permit the lever v, w to swing back from the electromagnet to its former position thus unlocking the feed-gate lever g. The empty retained by a catch y. The lower end of the lever moves over a projection x on the feed-gate lever and thus locks the feed gate in closed position. The lever v, w also displaces a catch bucket rises and moves the feed-gate lever to open the feed gate for a further weighing operation, the feed-gate lever also setting the mercury switch in its original position.
Patent GB-217245-A (GB)
Title: Improvements in or relating to systems for the propagation and reception of hertzianwaves
IPC: H01Q1/00
Filed: 1924-06-06
Abstract: 217,245. Levy, L. June 6, 1923, [Convention date]. Aerials; receiving systems; transmitting systems; filter circuits. - An aerial formed of magnetic material is provided with short-circuited windings in order to tune it. Fig. 3 shows a half-wave laminated magnetic reception aerial in which stationary waves are set up, short-circuited turns 3 being provided to allow the position of the node to be varied. A winding 4 serves to connect the receiving apparatus while the magnetic losses may be compensated by feeding back amplified currents to a winding 4'. Alternatively a generator may be connected to the winding 4'. The aerial may also be used for transmission and may be a closed magnetic circuit which may be provided with leakage shunt. The aerial may function as a wave filter, Fig. 9, showing a low-pass filter. The characteristics of the arrangement are controlled by varying the impedances connected to windings which may be applied to the lateral faces as at X<1>, Y<1> or may be disposed round the magnetic members as at A<1>, B<1>. The whole or part of the magnetic circuit may be surrounded by a conducting tube, which may be movable: The Specification as open to inspection under Sect. 91 (3) (a) comprises also a receiving frame 9, Fig. 12 (Cancelled), and tuning condenser 10, the frame being immersed in a liquid of high specific capacity, for example pure water. This subject-matter does not appear in the Specification as accepted.
Patent GB-592836-A (GB)
Title: Improvements in or relating to the manufacture of water-swelling films
IPC: C08J7/052
Filed: 1945-06-04
Abstract: Compositions containing rubber-maleic anhydride are used for coating films.  Other ingredients specified are waxes, paraffin, resins and plasticisers, e.g. tricresylphosphate, triphenylphosphate, dibutylphthalate.  The rubber-maleic anhydride compound may be obtained according to the process described in Specification 507,996. In an example, a mixture consisting of crepe-rubber, maleic anhydride, benzoyl peroxide and benzene is refluxed for 7 hours with stirring and the rubber-maleic anhydride compound precipitated by ethyl alcohol and filtered.  Coating compositions specified are: (1) rubber-maleic anhydride, benzene, ethyl acetate, solid paraffin; (2) rubber-maleic anhydride, benzene, acetone, ethyl acetate.
Patent GB-1017099-A (GB)
Title: Improvements in and relating to fatigue testing devices
IPC: G01N3/32
Filed: 1964-04-03
Abstract: 1,017,099. Electric selective signalling. L'ELECTRONIQUE APPLIQUEE. April 3, 1964 [April 4, 1963], No. 13996/64. Heading G4H. [Also in Division G1] In a fatigue testing device for plastics materials, e.g. a plastic strip 1, mounted midway between blocks supported on a vibrating device 4 actuated by a motor 15, the amplitude of vibration of the strip 1 is defined by photocells 5, 6. If the amplitude of vibration moves beyond photo-cell 6, then relay 50 is released and motor 15 stopped. During this time pulses are received by a photo-cell 7 and supplied to a counter 21 through a gate 20. When the amplitude is too high as detected by photo-cell 5 relays 40, 61 are activated to rotate the motor 15 in the opposite direction to reduce the gain of amplifier 17 and consequently the amplitude of vibrations. When the test piece breaks relays 60, 62 are released to close the gate 20 and stop the vibrating device 4. The counter 21 remains isolated and the test result may be read.
Patent GB-1067772-A (GB)
Title: Improvements in or relating to automatic burner control in heating apparatus
Filed: 1964-04-06
Abstract: 1,067,772. Controlling burners. SOCIETE APPAREILLAGE THERMOFLEX, ETABLISSEMENTS J. M. DARD. April 6, 1964 [July 1, 1963; Jan. 17, 1964], No. 14038/64. Heading F4T. [Also in Division G1] An automatic control system for an oil burning installation comprises a parallel circuit, one arm 6 of which includes a main control relay Rm for starting the burner and the other arm 7 of which includes an auxiliary relay Ra for controlling the main relay, the arrangement being such that when a thermostatically controlled switch 1 closes, relay Ra operates thereby actuating its contact 10 and so pulling up Rm, whereafter the ignition of the burner is detected by a photo-sensitive resistor 14 which on becoming highly conductive shunts Ra. The latter on falling back opens its contact 10 but Rm remains up due to a small holding current flowing through a high resistance 11. The system is supplied with A.C. over conductors 2, 3, rectifier Rd being included in arm 6 so as to provide D.C. for relay Rm. In the event that ignition does not take place (or fails during operation of the system) Ra remains up (or comes up) whereby a large current flows through safety relay 9 and eventually causes the latter to operate and thereby open contact 5 so shutting down the system. In an alternative arrangement (Fig. 2, not shown) the photoresistor is in series with Ra and make-contact 10 is replaced by a break-contact.
Patent GB-948130-A (GB)
Title: Improvements in and relating to frequency convertors
Inventor: LUDBROOK LESLIE CARTER
IPC: G21C7/12
Filed: 1959-04-24
Abstract: 948,130. Converting; control of A.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 21, 1960 [April 24, 1959], No. 14106/59. Headings H2F and H2J. [Also in Division G6] A quasi-sinusoidal waveform is built up from the direct current output of a controllable rectifying magnetic amplifier device which is controlled to give varying output amplitudes and which is connected to an output circuit through a changeover relay to provide positive and negative half cycles, control of both the magnetic amplifier and the changeover relay being effected by a rotatable selector switch. As shown in Fig. 2a, two windings x, y of an electric motor are supplied with 90 degree phase displaced currents which are related to the 25 positions of the selector switch, as shown in Fig. 1, from magnetic amplifiers controlled by windings CLX, CLY respectively through relays controlled by windings RLX, RLY respectively. A step pulse generator PG (Fig. 2), operates the selector switch which is provided with forward and reverse coils FC, RC, respectively. As shown in Fig. 2b, contact segments RSa and Rsb control the relay coils RLX, RLY, and the windings CLX, CLY are fed by a voltage derived from a potentiometer arrangement PQ, which voltage varies as the selector wiper R passes the contacts acb. The pulse generator comprises switch-operating cams displaced round a cam-shaft driven by a motor, each cam operating one switch to index the uniselector through one step. This motor may be speed controlled to vary the output frequency and hence the rotational speed of the driven motor which may control the position of nuclear reactor rods. The direction of movement of these rods is dependent on the rotational direction of the cam-shaft. By providing a cam-shaft with double the number of cams (say 50) two 25-position uniselectors may be operated from the same pulse generator. Each uniselector has two banks of contacts providing the two phase displaced currents x and y. The arrangement is used for slow movement of the nuclear rods and a retroactive feedback arrangement enables a predetermined reactor temperature to be maintained. An auxiliary motor drive provides fast control, and the rods may be lowered quickly under gravity, a resistor being connected across the field winding through a relay for dynamic braking.
Patent GB-143574-A (GB)
Title: Improvements in or relating to parallel jaw vices
IPC: B25B1/20
Filed: 1920-05-21
Abstract: 143,574. Hegenscheidt, E. H. Jan. 15, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Vices. - The movable jaw of a parallel-jaw vice is adjustable by a bolt along a smooth inclined bed, and is further tightened on to the work by a slight rotation about a pivot whereby the work is forced downwards, and the fixed jaw has a removable jaw-face spring- mounted in a trapezoidal recess also tending to force the work downwards during the final gripping movement. In the vice shown in Figs. 1 and 2, a member 5 carrying a movable jaw 8 is adjustable along a bed 12, slightly inclined towards a fixed jaw 9, by operating a nut 4 on a bolt 3 sliding in a longitudinal recess in the bed 12. A transverse bolt 14, in an elevated part 20 of the member 5, carries two truncated cones 15, between which is engaged a spiral spring, one or both of which may be slidable on the bolt 14. These cones engage the face 21 of the jaw 8, so that on tightening the nut 6, the jaw 8 is given a slight tilt about its pivot 11, effecting the final grip and forcing the work downwards. The fixed jaw 9 has a removable face 10 of the shape shown, attached by screws 16 and cotters 22 and forced upwards by spiral springs 17, a clearance of about a millemetre being left between the lower face of the part 10 and the upper face of the recess in the jaw 9, allowing a downward motion of.the part 10 during the final gripping movement of the movable jaw 8.
Patent GB-186104-A (GB)
Title: Improvements in desks
IPC: A47B21/02
Filed: 1921-05-20
Abstract: 186,104. Michaels, J. May 20, 1921. Writing-desks of the kind in which the top is vertically adjustable and counterbalanced so that it can be raised and lowered and secured at various heights. The top 24 slides within a frame, the legs of which conceal the balance weights 27. Slides 8 are adapted to engage the top and to retain it in either the " sitting position," that is when flush with the top of the frame, or the " standing position," that is, when raised above the top of the frame to the full extent. The top may be lowered within the frame, thus forming a compartment which may be closed by a cover compressing two parts 35, 36 hinged together. This cover slides in guides at the back of the frame and may be drawn up and turned over so that the flap 36 closes in the front of the compartment. The guides comprise grooves in the ends of the part 35 which are engaged by brackets secured to the frame.
Patent GB-537603-A (GB)
Title: Improvements in liquid blast electric circuit breakers
IPC: H01H33/92
Filed: 1940-09-13
Abstract: 537,603. Liquid-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 13, 1940, No. 14179. Convention date, Sept. 13, 1939. [Class 38 (v)] In a circuit-breaker of the "impulse" type a valve is interposed between the piston and arc-chamber so that if the arc-pressure is greater than the piston-pressure, the arc-pressure closes the valve, thus ensuring extinction of the arc by its own pressure. The piston may be arranged and operated as described in Specification 461,699. The contact-structure comprises a fixed contact 9 directly mounted on the metal oil-container 1, a floating contact 12 on a plate 13 biassed by springs 14 against the base of the insulating baffle 15, and a movable contact 5 guided in an insulating bushing 6, the arrangement being that a short arc initially drawn between 9, 12 generates a pressure for supplementing the impulse blast through passage 16 on to the arc subsequently drawn between 5, 12. The valve comprises a plate 27 with apertures 28<1> therein adapted to be closed by discs 28, which are guided on posts 29 and may be six in number arranged equidistantly around the contact 9. The posts 29 also secure a metal plate 30 having extensions 30<1>, whereby the electromagnetic forces set up if the arc tends to bow outwardly and strike the valve plate 27, oppose the forces tending to bow the arc, and thereby centre it and keep it short. In order to keep arc-gases out of the blast through passage 16, a baffle is provided in the form of a spout 32 depending from baffle 15 and a semicircular ridge 33 on the plate 30.
Patent GB-1156758-A (GB)
Title: Vegetable Extract Production.
Inventor: ANDERSON JAMES LEROY
IPC: A23F3/26
Filed: 1968-03-25
Abstract: 1,156,758. Dry tea and coffee extracts. NESTLE'S PRODUCTS Ltd. 25 March, 1968 [14 April, 1967; 27 Feb., 1968], No. 14206/68. Heading A2B. An aqueous extract of tea or coffee is frozen and ground, the ground material is divided into two fractions, one of which is freeze dried, and the other fraction, which may comprise the fines, is compressed into a homogenous solid, which is comminuted and at least a part thereof freeze-dried. The compression may be effected batchwise, or continuously by extrusion to form for example a tube. During the extruding the surface of the solid is preferably fused to lubricate the passage through the apparatus, and the extruded material is then cooled. Extracts having a solids content of 20-30% may be frozen directly, whereas those having a higher content may be foamed prior to freezing. A suitable extrusion apparatus is that of Specification 1,156,759.
Patent GB-277071-A (GB)
Title: Improvements in and relating to the coating of materials by metal spraying
IPC: B05B7/20
Filed: 1926-06-04
Abstract: 277,071. Cozens, F. G., and Metallisation, Ltd. June 4, 1926. Coatin,g; coating non- metallic surfaces with metal.-The interior of elongated articles of considerable length such as pipes and tubes is coated with metal by the metal spraying process, the coating material in a pulverized or liquid condition together with a combustible gas being fed to a melting and/or spraying appliance through a rigid or flexible extension pipe connected thereto and the disintegrated material issuing from the melting, &c., appliance being deflected in any desired direction by means of jets supplied by an independent source of gaseous medium. The spraying appliance is fixed and the article is given a longitudinal and rotary movement relatively to the jet of coating material. The coating material from a container 1 is fed into a pipe 8, as described in Speeification 21066/11, and is there propelled forward, by a spraying medium entering at 4 through an extension 8<1>, which may be adjustably attached to the pipe 8, into a spraying nozzle 9. Pivotally mounted at 15 on the nozzle 9 is a deflecting nozzle 10 which is supplied with a gaseous medium from a container 12 by a pipe 11 and which can be adjusted mechanically by a wire 16 passing through a loop 17 and connected to the nozzle 10. The angle of the defected spray may also be adjusted by varying the pressure of the pressure medium or the supply of gas to the nozzle 10 in a manner similar to that described in Specification 18841/13. The spraying appliance may comprise a central pipe for the coating material surrounded by a gas conduit itself surrounded by the air supply outside which is located a conduit for the supply of the medium to the nozzle 10, the four conduits being encased in a single outer tube. Specifications 28001/12 and 25132/13 also are referred to. Before the article is coated with metal, the surface to ha coated may be treated with a sand :blast, sand being used instead of the coating material.
Patent GB-404855-A (GB)
Title: Process for the preservation of wood with copper and arsenic compounds
IPC: B27K3/32
Filed: 1933-05-17
Abstract: 404,855. Wood preservative compositions. KAMESAM, S., New Forest P.O., Dehra Dun, India. May 17, 1933, No. 14285. [Class 140.] A wood preservative composition consists mainly or solely of water-soluble compounds of chromium, copper and arsenic. Suitable compounds are potassium bichromate, copper sulphate and arsenic pentoxide, and preferably the chromium content varies between 45 per cent and 90 per cent, the copper content between 8 per cent and 40 per cent, and the arsenic content between 8 per cent and 50 per cent of the total copper, arsenic and chromium present as elements. Specifications 2972/12, [Class 140, Waterproof &c. Fabrics], and 377,441 are referred to.
Patent GB-766636-A (GB)
Title: Improvements in or relating to welded horizontal butt joints between curved plates
Inventor: FOWLER RICHARD JAMES
IPC: B23K9/00
Filed: 1953-05-21
Abstract: 766,636. Welding by fusion. OXLEY ENGINEERING CO., Ltd. May 20, 1954 [May 21, 1953], No. 14332/53. Class 83 (4). [Also in Group XXIX] In mating a horizontal welded butt joint 5 between superposed curved plates 3 in a structure built up of curved plates located edge to edge in superposed rows or rings, the lower edge of each upper plate is tapered at 6 on both sides, the edges are arranged on a separate ring 8 or ring segment arranged on the lower plates or an integral rib is formed along the length of each lower edge to bear on the lower plates to form truncated V-grooves 9 in which weld metal 10 is deposited, the vertical seams 4 also being welded. The curved rectangular plates 3 are welded along vertical seams 4 to form rings which are superposed above a foundation 2 to form a circular tank, the plates of each succeeding ring being thinner than those of the preceding ring. At points where vertical and horizontal seams meet tapering 11 at a sharper angle is used to provide a larger weld deposit. The upper edges of the lower plates may be tapered and the tapering may be by machining, flame cutting, &c. The ring 8 may be of welded sections.