baber/WOPTO huggingface dataset:
Patent GB-730532-A (GB)
Title: Improved method and apparatus for producing pile fabric and pile fabric produced thereby
Inventor: LACEY EDWARD DAVIS
IPC: D05C15/00
Filed: 1953-10-22
Abstract: 730,532. Pile fabrics. RUSSELL-LACEY MANUFACTURING CO., Inc. Oct. 22, 1953, No. 29250/53. Class 142(4). [Also in Group VII] A pile fabric comprises a fabric base 18 having doubled portions of a continuous pile yarn inserted in it at spaced intervals to extend from both faces of the fabric base in the form of loops substantially longer than the spaced intervals, the adjacent loops on at least one face of the fabric base being randomly entangled and interlocked to prevent withdrawal of the yarn from the base. In the method described for the production of such fabric, each loop 22 being formed is stretched in the direction of the loops already formed so that when it is released it may fall over an existing loop or spring forward to a position in which it may be penetrated by a needle forming a subsequent loop. Some entanglement of the loops 20 on the other side of the fabric may also occur. Pile as described may be used on only part of a surface, the loops on the remainder being cut to form chenille ends. Specifications 699,633 and 699,657, [Group VII], are referred to.
Patent GB-1504699-A (GB)
Title: Fixing device for sheeting
IPC: B29C65/00
Filed: 1975-06-30
Abstract: 1504699 Fixing sheets POWER PLASTICS Ltd 30 June 1975 [2 July 1974] 29257/74 Heading E2A A flexible sheet 10 of waterproof material e.g. a tarpaulin has a fixing device 11 thereon comprising a base 12 rigidly secured to the sheet e.g. by high-frequency or heat welding and having an integral boss 13 having an aperture 16, the axis of which is generally parallel with the plane of the sheet 10. The device 11 may be of plastics, may be reinforced by a metallic lining on the inner surface of the aperture, or may be made of a metal-reinforced material.
Patent GB-1083181-A (GB)
Title: Improvements in or relating to radio frequency amplifiers
Inventor: PRATT ALAN REGINALD
IPC: H03F1/36
Filed: 1963-07-24
Abstract: 1,083,181. Valve amplifying circuits. MARCONI CO. Ltd. July 10, 1964 [July 24, 1963], No. 29318/63. Heading H3W. [Also in Division H1] There is connected across the input of a radio frequency amplifier a transmission line 10 adjustable as to electrical length and having at spaced points along it a number of bridging capacitors 12 whose value and mutual spacing are such that when the line is adjusted to ar electrical length approaching a quater-wave length at the operating frequency, or an odd multiple thereof, the circuit appears inductive at that frequency and of low reactance at ar undesired harmonic thereof. As shown, the line, the electrical length of which is altered by means of an adjustable shorting member 11 forms with tapped tuned circuit 4, 5, the input circuit of a grounded-grid amplifier and serves to improve the efficiency of operation by reducing the amount of second harmonic appearing in the input circuit. The construction of a suitable line is also described in the Specification (see Division H1).
Patent GB-802421-A (GB)
Title: Improvements in or relating to poultry feeding devices
IPC: A01K39/01
Filed: 1954-10-12
Abstract: 802,421. Poultry-feeding appliances. JAMES MFG. CO. Oct. 12, 1954 [Oct. 12, 1953], No. 29334/54. Class 5(2). A poultry-feeding appliance comprises a feed hopper A, a conveying trough C receiving feed from the hopper and means beyond the end of the trough sensitive to the volume of feed passing thereunder, the sensitive means being connected to a control circuit which controls the means rate of delivery of feed by the conveyer trough. The hopper supplies feed through an adjustable duct 14 to the conveying trough which is oscillated by the mechanism B. The feed falls from the trough C into a feed-pan D where it is pushed under a flapper plate 30 by means of a plate 25 fixed to the trough. The flapper plate rides over the feed and in dependence upon the amount of feed passing thereunder the projection 32 operates a switch 19 thereby breaking the circuit containing the solenoid 18 so that the valve 16 closes by gravity to stop the supply of feed to the trough. In a modification, see Fig. 5, the hopper E is provided with a narrow opening along its length in close proximity to which is disposed the conveyer feed trough 40 which feeds intermittently, via a duct 41, a closed system of oscillating feed troughs 42, 43, 44 and 45. A manually-operated valve 57 controls the amount of feed entering the trough 40 but the amount of feed supplied by this trough is controlled by a flapper plate 30 disposed in trough 42, the flapper plate operating to break the circuit to the oscillating mechanism B of the feed trough 40. Specification 802,422 is referred to.
Patent GB-838927-A (GB)
Title: Automatic arc welding machine
IPC: B23K37/02
Filed: 1958-09-12
Abstract: 838,927. Welding by fusion. LEX, F. Sept. 12, 1958 [Sept. 16, 1957], No. 29357/58. Class 83 (4). [Also in Group XXXV] In an electric arc welding machine in which the welding torch is mounted on a motordriven carriage, a constant-speed motor drives the carriage and the same motor intermittently drives the electrode feed to maintain constant arc voltage. The motor 2 drives the carriage 4 through a clutch 3, and also drives the electrode feed roller 14 through an electromagnetic clutch 8 which is energized from a source 11 over a relay 18 whenever the arc voltage rises to the pull-in value of the relay 18. It is stated that the invention may be applied to multiple electrode welders, and that the clutch may be replaced by variable-speed gears.
Patent GB-610536-A (GB)
Title: Improvements in or relating to fluid feeding devices suitable for use with fountain brushes
IPC: A46B11/00
Filed: 1945-11-05
Abstract: 610,536. Inertia-actuated valves. KRAMMER, E. J. Nov. 5, 1945, No. 29372. [Class 135] [Also in Group XXIII] An inertia-operated valve, particularly for use with fountain brushes in which liquid is fed to the bristles by the brushing movements, comprises a part-spherical valve head 22 which coacts with a seat 21 and is provided on its flat face with V-shaped grooves 31 disposed at right angles to each other. The head 22 is threaded on the stem 24 of a pendulum bob provided with a conical surface 26 which, on inversion of the brush, closes on a conical seat 20 to seal the reservoir 11 in the handle 10. On using the brush, with the bob 25 disposed below the head 22, liquid passes through gaps at the ends of the grooves to a feeding chamber 14 and thence through a port 17 to the bristles. Specification 610,537 is referred to.
Patent GB-339397-A (GB)
Title: Improvements relating to oven thermometers
IPC: G01K5/70
Filed: 1929-09-30
Abstract: 339,397. Thermostatics, Ltd., Miller, O., and Miller, F., (Representatives of Miller, F. W.). Sept. 30, 1929. Thermometers. - A thermometer for ovens comprises a bimetallic strip adapted to rotate a dial relatively to a fixed pointer or mark. In one form a spiral bimetallic strip 3 is fixed at one end to the casing 2 and attached at the other end to the spindle of a rotatably mounted dial 1. Alternatively the inner end of the strip may be fixed and the outer end attached to a flange on the dial. Changes in temperature cause markings on the dial 1 to move past the pointer 8.
Patent GB-765128-A (GB)
Title: Improvements in and relating to schering bridge circuits
IPC: G01R17/00
Filed: 1954-10-13
Abstract: 765,128. Measuring bridges. HARTMANN & BRAUN AKT.-GES. Oct. 13, 1954 [Oct. 14, 1953; Sept. 13, 1954], No. 29491/54. Class 37. In a Schering capacitance bridge, errors arising from stray capacitances of the screened leads connecting the test and standard impedances to the bridge proper are eliminated by connecting the screens to a common point, so that the stray capacitances of the leads are effectively in series with each other across the unbalance diagonal and the common point is earthed through the combined stray capacitances of the screens, while a variable capacitance is connectible in shunt with either stray capacitance and is adjustable to a balance value such that the ratio between the total screened lead stray capacitances is equivalent to that between the corresponding test and standard impedances; the screens then being switchably connected to earth so that measurement by normal Schering bridge methods may proceed. Fig. 2 shows a Schering bridge whose arms comprise test capacitance CX in series with variable resistance R3 and standard capacitance CN in series with fixed resistance R4 in shunt with variable capacitance C4; connected between earth and an alternating energization voltage source 1. The capacitances CX, CN are connected directly to the latter and to the bridge proper over screened cables (not shown), the stray capacitances C<SP>1</SP>1, C<SP>1</SP>2 between the conductors of which are connected effectively in parallel with the vibration galvanometer VG between the junctions of CXR3 and CNR4. Stray capacitance C<SP>1</SP>1 is shunted by a variable capacitance C<SP>1</SP>5, while the screen stray capacitance C<SP>1</SP>6 is effectively connected from the junction C<SP>1</SP>1C<SP>1</SP>2 to earth and is shunted by an on-off switch S. In operation switch S is initially open and C<SP>1</SP>5 is adjusted until the auxiliary bridge CXCNC<SP>1</SP>1 C<SP>1</SP>2 is balanced, after which switch S is closed and the normal Schering bridge is balanced by adjustment of R3, C4 in the usual manner. The auxiliary and main bridges are alternately and consecutively balanced until no unbalance is indicated when closing switch S, at which the stray capacitances have no effect on the measurement of CX. The cable screens may be permanently earthed and the switch inserted between the junction of R3 and R4C4 (Figl 3, not shown) while the switch may be permanently shunted by a capacitance (Fig. 4, not shown).
Patent GB-252628-A (GB)
Title: Improvements in or relating to side screens and windows for vehicles
IPC: B60J10/02
Filed: 1925-11-24
Abstract: 252,628. Perks, H. Nov. 24, 1925. Wind-screens.-The frame of a windscreen &c. of a motor vehicle is encased in tubular rubber a which has an integrally formed channel part c for one or more fixed or sliding sheets of glass, celluloid &c. and a flap e to make a draught excluding joint with the body on the outside. The tubular part may be slit to facilitate its introduction on the frame. When the frame is joined at the corners by anglepieces the rubber casing is mitred and joined by cold vulcanizing or otherwise. The channel groove is preferably of dovetail section to make a water-tight joint with the glass &c. A solid or tubular beading may supplement or replace the flap e.
Patent GB-337156-A (GB)
Title: An improved splice for repairing breaks in motion picture films
IPC: G03D15/04
Filed: 1929-10-01
Abstract: 337,156. Automatic Film Machine Corporation, McLaughlin, W. F., and Swing, A. J. Oct.. 1, 1929. Kinematograph picture films.-A butt-joint between two sections x, x' of film is made by arcuately cutting the ends 8, 9 of the sections to convex and concave shape respectively, and cementing the ends together in overlapping relation after scraping away the colloid picture-layer. The arcs 8, 9 may be of the same radius, which may be equal to the length of the chord.
Patent GB-338293-A (GB)
Title: Car jack
IPC: B66F1/02
Filed: 1929-10-02
Abstract: 338,293. Braselmann, E. Oct. 2, 1929. Jacks.- A ratchet jack of the frictional grip type has the crutch pillar 1 encircled by a lifting pawl 3 and a holding pawl 5, the lifting pawl being actuated by a lever operated cam 4 acting on one side of the pawl and the holding pawl being pivotally mounted at one side 5a in the frame and disengageable at the other side by a lever 5<b>. The pawls are off-set so that the line joining the gripping points 5<c>, 5<d> is approximately perpendicular to the crutch pillar.
Patent GB-459286-A (GB)
Title: Improvements in and relating to base-exchanging material for bringing about ion exchanges
IPC: C01B33/46
Filed: 1936-03-16
Abstract: Base-exchanging substances which may be used for softening water are obtained from the minerals located above and below the coal deposits in the Faroe Islands, or from minerals of similar chemical composition and physical properties and occurring in the same geological formation, by treating the comminuted mineral with a non-alkaline alkali salt such as sodium chloride or sulphate. Treatment may be effected with a solution of the salt, or the mineral may be mixed with the alkali salt in a pulverized granular state. Prior to or following treatment, the mineral may be dried, but the drying temperature should not exceed 500 DEG  C.
Patent GB-894706-A (GB)
Title: Improvements in or relating to pneumatic tyres
Inventor: COOPER DAVID HENRY D OYLY
IPC: B60C9/20
Filed: 1958-09-02
Abstract: 894,706. Pneumatic tyres. DUNLOP RUBBER CO. Ltd. Sept. 2, 1958 [Sept. 24, 1957], No. 29912/57. Class 144 (2). A pneumatic tyre tread reinforcement is built up from separate parallelogramshaped strips of parallel cord fabric which are interleaved into endless band form so that one portion of each strip overlies a portion of an adjacent strip and another portion of said each strip underlies a portion of another adjacent strip. The strips may be half-lapped as shown in Figs. 1 and 2, with the cords of adjacent parallel-cord strips being in oppositely crossed relation and the dimensions of the strips being such that the lapped portions are either triangular-shaped, Fig. 1, or trapezoidal-shaped, Fig. 2. Alternatively, the strips may be two-thirds or threequarters lapped to give a three or four tier structure (Figs. 5 and 6) with a portion of each strip in each tier. As shown in Fig. 7, adjacent strips may have cords angles of the same sense but different magnitude. Fig. 8 shows a further form of "braid"-like structure wherein each strip (a2) has its centre portion overlying or underlying the centre portion of the central one (b2) of the adjacent strips b1, b2, b3 and its end portions underlying or overlying an end portion of each of the two outer (b1, b3) of the three adjacent strips. In all cases the strip may comprise steel cords, with a preferred cord angle of 18 degrees and the reinforcement may be combined with a conventional breaker strip of parallel steel cords having a cord angle of 90 degrees. Specification 894,705 is referred to.
Patent GB-248845-A (GB)
Title: Improvements in and relating to loud speakers for wireless telephony, and the like
IPC: H04R7/22
Filed: 1924-12-12
Abstract: 248,845. James, J. S. R. Dec. 12,1924. Loud-speakers; diaphragms. - A conical diaphragm 4 formed of stiff parchment paper or Bristol board having slots 5 formed at intervals around its periphery is turned outwardly to provide a flange 6 that is clamped to the front panel of a sound chamber 1 by a ring 7. The flange is clamped to the panel around an opening corresponding to the diaphragm. The sound chamber is formed of three-ply or other wood and is supported by pedestals 2 with resilient pads 3. Openings 15 are provided in the front panel and an electric light 14 may be provided in the interior of the sound chamber. The apex of the conical diaphragm is reinforced by a cap 10 and is connected to the vibratory member 9 of an electromagnetic energizer 8 by a plug 11 and screw 12. A reticulated screen 13 is clamped across the mouth of the diaphragm.
Patent GB-1056846-A (GB)
Title: Improvements in the anodising of aluminium and its alloys
Inventor: SMITH PETER ROBERT WILLIAM
IPC: C25D21/10
Filed: 1962-09-02
Abstract: <PICT:1056846/C6-C7/1> Aluminium workpieces are anodized by containing the workpieces in a rotatable rack of drum form, which can be raised and lowered in a series of locations including pre- and postanodizing baths where one or more liquids are sprayed on to the articles. Pre-anodising treatments specified include alkali cleaning, wash, acid etch, wash, and post-treatments include sealing with hot water or nickel acetate solution, dyeing, steaming, and drying with hot air.  Preferably four baths are used for pre-treatment, anodizing, and two post-treatment baths used altenately, this treatment taking less time than anodizing.  Fig. 2 illustrates one stage in which the rotatable rack 90 with associated gear 7 and motor 83 is mounted within a tank casing 70, which can be lifted out of and inserted in a container 1, having a sloping base 10 leading to an outlet 10.  After inserting the unit, the top member is secured to the main frame member 67, and a lid 95 is provided to prevent escape of vapours.  The rack comprises an axis 74 (driven by motor 83 and belt 88) on which is mounted spider members 88, 89 to which the parts to be treated are secured, e.g. long lengths of aluminium building sections 91.  Liquids and steam are admitted in the succeeding stages through jets 21.  These are absent in the anodizing bath.  The liquids escape at the bottom and drain into individual gutters 31, for recirculation or rejection as necessary.  When a liquid treatment stage is completed, the rack may be tilted to assist draining.  The rack is rotated at 2 to 6 revs per minute.  The normal anodizing, etching, and cleaning agents are specified.
Patent GB-841155-A (GB)
Title: A sliding expansion contact device for supplying electric current from stationary to moving parts of machines
IPC: B23K11/36
Filed: 1956-10-02
Abstract: 841,155 Collectors. CKD CESKA LIPA, NARODNI PODNIK. Oct. 2, 1956 [Oct. 5, 1955], No. 29998/56. Class 38(1) The movable contact 3 forming an electrode of a welding press is secured to a piston 2 sliding in a cylinder 1 to which current is supplied, the piston being of reduced cross-section with respect to the cylinder so affording a tapered shoulder 6 and a interspare housing- trapezoidal contact density 9, 10, 11 to effect sliding contact between rod 2 and cylinder 1 as the piston is forced downwards by pressure in the cylinder spare above the piston, and, when the pressure is released, as it is forced up by spring 4 or by hydraulic pressure. The two latter alternative arrangements are then on the left and right hand side of the Figure respectively.
Patent GB-229757-A (GB)
Title: Improvements in or relating to screw-propellers
IPC: B64C11/36
Filed: 1923-11-28
Abstract: 229,757. Fedden, A. H. R., Butler, L. F. G., and Bristol Aeroplane Co., Ltd.. Nov. 28, 1923. Screw propellers.-In variable pitch airscrews in which the actuating mechanism is driven off the engine shaft a " hunting gear " is incorporated. A sleeve 17, Figs. 1 and 2, is connected through a flange 22 to the blades for rotating them and is freely mounted on sleeve 15 which is threaded on the screwed hub 12 keyed to the driving shaft. In the flanges 22, 23 are mounted hollow supports 24. 26 for shafts 27 carrying friction rollers 39, 40 adapted for engagement with the coned ends of a sleeve 41 carried by a casing 25 on the engine. Movement of the sleeve, endwise into engagement with one of the rollers results in rotation of the corresponding shaft 27 carrying it, and through the gearing, the sleeve 15 is rotated and moves axially carrying with it the flange 22 and so moving the blades on their axes. At the same time, the endwise movement of the flange tends to move the engaged roller from the sleeve 41 thereby producing a hunting effect. To alter the pitch in the opposite sense, the sleeve 41 is moved in the opposite direction to engage the other roller. The pin 43 on the plate 22 engages a slot on the end of an arm 46 projecting from a ring 47 at the root of the blade. In a modification, the epicyclic gears between the roller shaft and the toothed sleeve 15 is omitted, the reduction being obtained by using a segment instead of a complete sleeve 41 so that the drive is intermittent and exists only during a part of each revolution of the engine shaft. Also the connection between the control lever and the segment is not positive but through a spring for reducing shock during engagement. Instead of using rollers driven off a fixed sleeve, the roller shafts carry pinions which engage internal pinion on freely mounted brake flanges. The actuation of the gears is then obtained by applying a brake to one of the two flanges to hold it fixed whereupon as the boss rotates the actuating mechanism is driven. The lever controlling the brake is connected to the brake lever by balanced springs. Actuation of the mechanism results in movement of the brake flanges out of engagement with the shoes. The control lever 57, Fig. 5, moves over a scale indicating the positions for maximum and minimum setting of the blades. This scale can be adjusted in flight by hand, or automatically by gearing from a diaphragm 63 on an instrument 64 in accordance with the density of the atmosphere.
Patent GB-1408486-A (GB)
Title: Propulsive force generating means for marine vehicles
IPC: B60V1/14
Filed: 1973-06-25
Abstract: 1408486 Marine propulsion apparatus; air cushion vehicles BRITISH HOVERCRAFT CORP Ltd 19 June 1974 [25 June 1973] 30017/73 Headings B7K and B7V Propulsion apparatus for a ship or air cushion vehicle consists of a diaphragm 18 which is caused to undulate by rollers 16 on the arms mounted between two rotating wheels 14. The wheels are located in a space 12 within a ship's bottom or within the sidewall of an air cushion vehicle. The axial ends of the diaphragm have part conical extensions to make watertight joints with the structure of the ship or air cushion vehicle.
Patent GB-259063-A (GB)
Title: Improved advertising means
IPC: G09F23/00
Filed: 1925-11-27
Abstract: 259,063. Davies, J. G. Nov. 27, 1925. Surface markings.- A covering for floors, or other parts of buildings, is formed with openings in which are fitted signs consisting of a sheet of yiedding non-metallic material perforated to receive letters &c. of a different colour. The openings 7 in the covering 5, Fig. 3, are lined with inverted U-shaped rails 2 of a height corresponding to the thickness of the covering 5 and furnished with, flanges 3 to which the signs and covering are attached by adhesive. Spacing strips 8, preferably having curved corners 9, separate the signs 6. Fig. 6 shows the manner of forming the signs by fitting symbols 13 into perforations 11 in the sign base 6, a sheet 12 of thin fabric being finally attached to the back of the base. The signs may be mounted without the surrounding cover 5.
Patent GB-744668-A (GB)
Title: Improvements in electro-magnetic control devices
Inventor: GIMSON CYRIL FREDERICK
IPC: H01H71/32
Filed: 1952-11-27
Abstract: 744,668. Electrically-released switches, protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 5, 1953 [Nov. 27, 1952], No. 30091/52. Class 38(5) An electromagnet operating device for an N phase circuit protective or indicating device comprises N electromagnets 1...3 providing N pairs o: pole pieces with all the pole pieces extending intc parallel juxtaposed relationship to one another and co-operating with a common armature 4, means for pre-magnetizing the electromagnets so that the pole pieces become of alternate opposite polarity and attract the armature against a bias 8 and an alternating-current control winding 9 embracing the pole pieces, the control winding when energized deflecting the flux entering the armature from the pole pieces to cause the release of the armature. The winding 9 may be energized in accordance with the unbalance current of the circuit with which the device is associated and the release of the armature may effect the operation of an indicating device or of contacts 12, as shown. The electromagnets 1...3 may be pre-magnetized by a permanent magnet or a winding 6 connected to a D.C. source. The core of each electromagnet may be made in two halves, each half core-being formed by parts 13, 14 providing a pole piece 15 and an air gap 16. The two halves, e.g. 1, 1', of each core are assembled so that the air gaps 16 appear on opposite sides of the pole pieces 15 and the pole pieces assume opposite polarities when the common winding 6 is energized. The half cores are separated from one another by magnetic spacers to allow for the introduction of the winding 9 which may be formed as a single conductor which weaves in and out between successive pole pieces. Specifications 731,919, 742,114, and 744,474 are referred to.