baber/WOPTO huggingface dataset:
Patent GB-984262-A (GB)
Title: Improved system for the verification of magnetically recorded signals
IPC: G11B20/18
Filed: 1963-06-19
Abstract: 984,262. Checking arrangements for data storage apparatus. AMPEX CORPORATION. June 19, 1963 [June 29, 1962], No. 24446/63. Heading G4C. Data read from magnetic tape 35 is checked against corresponding signals from a source 46 and where errors are detected the tape is over written by the use of a bridge circuit 30 in a single pass. In this "playback" mode of the apparatus data signals read are passed through amplifiers 38 and 40 to a difference amplifier 44 acting as comparator. In the event of a difference in the signals from tape and unit 46 a correction signal energizes the record amplifier 28 (after a small delay to enable the bit area read to reach the centre of the head gap) to correct by overwriting, and at the same time breaks the feedback loop at 43 for a corresponding short period. In the "record" position drop-out is detected by coincidence circuit 52 and the data recorded is monitored over switch 27b. Specification 966,438 is referred to.
Patent GB-944939-A (GB)
Title: Improvements in or relating to the manufacture of bearings
Inventor: BAILEY ERIC
IPC: F16C33/04
Filed: 1959-07-16
Abstract: 944,939. Making composite bearings; jointing. INTERNATIONAL COMPUTERS & TABULATORS Ltd. May 26, 1960 [July, 16, 1959], No. 24448/59. Headings B3A and B3V. [Also in Division F2] A method of making a triangular, rectangular, hexagonal &c. bearing for the printing wires of a wire-printing machine &c. comprises preparing a plate 1 with bevelled edges 3 and a polished surface 2 for each bearing surface, applying an adhesive to the bevelled edges and assembling the plates round a mandrel 4 with the adhesively coated edges substantially in contact, applying pressure to the plates during setting of the adhesive and removing the completed bearing from the mandrel. Screws 7 in a ring 6 press the sapphire, tungsten-carbide &c. plates against the mandrel 4, which is located in a hole in a jigplate 5 and coated with a silicone grease. A steel support 8, Fig. 3, is located by pins 9 on the plate 5 and receives the bearing in a U- shaped aperture which is closed by a plate 10. The bearing is secured to the support 8 by a moulding resin. The plate 5 is greased and may accommodate a dozen bearings. Specification 684,273 is referred to.
Patent GB-216037-A (GB)
Title: Improvements in carriage-returning mechanism for typewriting machines
IPC: B41J11/24
Filed: 1923-10-02
Abstract: 216,037. Smith, A. J. Oct. 2, 1923. Carriage - returning mechanism; l e t t e rspacing mechanism.- A carriage-propelling spring a<1> and a carriage - returning spring b, which is stronger than the spring a<1> and is wound by the operation of the typing - keys, are arranged in co-axial drums a, b<1> adapted to be coupled by a one-way connection on operating a carriage-returning key. The typing-keys may operate a lever c<2> carrying a pawl c engaging a ratchet-wheel c<1> on a worm which drives a worm-wheel e on the drum b<1>. The carriagereturning-key may operate a lever d, adapted to move axially the drum b<1>, thereby disengaging the worm, and causing the drums to engage by means of teeth g thereon. The position to which the carriage is returned may be determined by operating one of a number of carriages-releasing keys; or tabulating-devices may be employed for this purpose.
Patent GB-658296-A (GB)
Title: Improvements in or relating to the manufacture of microporous sheets of hard rubber
Filed: 1948-09-18
Abstract: Microporous permeable sheets of hard rubber are made by forming a layer of a foamed latex containing a gelling agent, allowing to gel, compressing the gel to distort the air bubbles without destroying the foam structure and vulcanizing the sheet whilst it is immersed in hot water.  The gelling agent may be calcium formate or a zinc oxide-sodium silicofluoride mixture and the foaming agent may be soap, whilst sulphur is the specified vulcanizing agent.  The degree of permeability of the product may be varied by altering the amount of foaming or the subsequent compression.  Specification 487,334 is referred to.
Patent GB-1153150-A (GB)
Title: Pipe Joint and method and apparatus for producing the same
Inventor: MOUNT WADSWORTH WALTON
IPC: B21D39/04
Filed: 1966-06-01
Abstract: 1,153,150. Tube expanding; jointing. W. W. MOUNT. 1 June, 1966 [7 June, 1965], No. 24501/66. Headings B3J and B3W. [Also in Division F2] A joint between two pipe sections 10, 11 is effected by force fitting an end of one pipe section within an end of the other. The end of pipe section 11 which receives an end of pipe section 10 is provided with a flare by means of a frusto-conical extension 28 of a forming ring 27. The latter is urged towards section 11 by hydraulically actuated pull-bars 18, 19 which together with grip pipe rings 12, 13 and clutch rings 14, 15, respectively, also keep the pipe sections in alignment. After the flare has been formed the ring 27 is removed and the sections are urged together by the bars 18, 19. The flare may be provided during manufacture of the sections and the latter may be hammered together.
Patent GB-649876-A (GB)
Title: Improvements in or relating to high voltage supply systems for x-ray tubes
IPC: H05G1/24
Filed: 1948-09-20
Abstract: 649,876. Condenser discharge supply systems for X-ray apparatus. TITTERTON, E. W., and VOORHIES, H. G. Sept. 20, 1948, No. 24619. Convention date, Sept. 26, 1947. [Class 38 (iv)] An X-ray tube 24 is operated by a Manx generator 7 adapted to supply a positive voltage pulse to the anode of the tube simultaneously with a negative voltage pulse which the generator also applies to the cathode of the tube. For this purpose the charging circuit for the generator is connected to intermediate condensers 19, 20 of the resistance-condenser spark gap network and connection 21 between these condensers is grounded. The first spark gaps 42, 43 on opposite sides of the grounded point of the network have triggering electrodes 44, 45 energized in parallel from a pulse transformer 38. The arrangement is stated to reduce insulation, timing and corona discharge problems.
Patent GB-1471465-A (GB)
Title: Vaginal medicator
IPC: A61F13/20
Filed: 1974-06-04
Abstract: 1471465 Vaginal medicator H H GROVES 4 June 1974 24685/74 Heading A5R A vaginal medicator, Figs. 1d and 1b, comprises an elongated stem 12 of non-soluble material which carries medicament 22, for extending along substantially the entire length of the vaginal canal to the cervix, a non- soluble anchoring moss 14 for retention outwardly of the constricting muscles at the entrance to the vaginal canal and a pullout string 16. The anchoring moss may be either spherical or cylindrical, and the pullout string may be replaced by an extension of the stem through the anchoring moss. The stem and the anchoring moss may each be hollow and liquid permeable, for housing the medicament Fig. 7d, the stem may be looped for encircling the cervix, Figs. 7d, 9b and may additionally carry a web 60, Fig. 9b, for carrying the medicament.
Patent GB-693983-A (GB)
Title: Improved invalid chair or the like
IPC: A61G5/06
Filed: 1950-10-11
Abstract: 693,983. Endless-track vehicles. JOHANNESEN, H. A. J. Oct. 11, 1950 [Oct. 11, 1949], No. 24816/50. Class 79 (i) An invalid chair comprises an endless band or pair of bands 13 in an inclined position relative to the normal plane of movement of the chair, the rear wheel or wheels 15 being mounted on a movable bracket so that they can be moved to a position above the plane of the bands. As shown, each band comprises an endless belt of V or other cross-section, on each side of the chair, and is mounted on upper and lower pulleys 11, 12. A bracket 16 carrying a pair of wheels 15 is pivotally mounted at 17 and is rigid with a sector ring, or (as shown) a disc 22. Notches 21, 23, 24 in the disc co-operate with a spring-pressed latch 19 which is releasable by movement of a lever 26 on the handle 2 of the chair acting through a cable 25. The disc 22 is connected at 17 with a spring unit 29, the connections to which are arranged so that the wheel 15 is urged to its lower position (full lines in Fig. 2). Upward movement of the wheels 15 may be cushioned by the action of air within the unit 29, and a rubber cushion 33. An electric or i/c driving motor 38 may act through gearing 39, 40, and a differential gear (not shown), on the axle 10. A brake block 34 is urged by a spring 35 into engagement with one of the upper belt pulleys 12. In order to release the brake, it is necessary to depress a lever 37 on the handle 2. A respective brake and associated control lever may be provided for each wheel 12 so that in conjunction with the differential gear in the drive of the motor 38, the chair may be steerable by its occupant. Front wheels 9 may be replaced by a single wheel or may be dispensed with, the chair then resting on the pulleys 11. The axle of the pulleys 12 may be laterally adjustable in order to adjust the inclination of the belt 13. Instead of being movable circumferentially into position, the mounting of the wheels 15 may be arranged to move the wheel longitudinally. The spring unit 29 may be replaced by a counterweight mechanism. The two belts 13 may be replaced by a single broad belt disposed centrally of the chair. The chair may be adapted for carrying furniture, &c. In operation, on commencing to mount stairs, the chair is pulled backwards until the wheels 15 engage the first stair. The latch 19 is then released, so as to permit the wheels 15 to be pushed by contact with the stairs into the position shown dotted at 15<SP>1</SP> in Fig. 2. In descending, the stairs are permitted to deflect the wheels 15 into the position 15<SP>11</SP>. The wheels 15 may be replaced by a single wheel mounted on a slewing bracket.
Patent GB-584173-A (GB)
Title: Rigidifying means for the flexible endless tracks of vehicles
IPC: B62D55/22
Filed: 1944-12-12
Abstract: 584,173. Endless tracks for vehicles. ROADLESS TRACTION, Ltd., JOHNSON, P. H., and TRIPP, L. W. Dec. 12, 1944, No. 24937. [Class 79 (i)] A flexible endless track is converted into the locked girder type by means of wedgeshaped members secured to the track link so disposed that adjacent links abut on to the wedge members and are so prevented from taking up a reverse curvature. A wedge shaped member may be secured to each link, or to each link of a series, one or more links between different series being left flexible. Successive links 1, 2, 3, Fig. 1, are hinged together with hinge pins 4; wedge-shaped members 8, one of which is shown in plan in Fig. 2, are bolted to each link between the spud portions 5, 6, 7 so that the latter abut against the rods 11 and 12 of the wedge members.. Each wedge member comprises a base 9 carrying webs 10 to which are secured the abutment rods 11, 12. The wedge members may be detachably secured by bolts 13 whose heads are recessed into oval-shaped washers 15. Specification 574,268 is referred to.
Patent GB-1107453-A (GB)
Title: Improvements in colour photographic materials containing dispersed couplers
IPC: G03C7/388
Filed: 1965-06-14
Abstract: 1,107,453. Colour coupler dispersions. FERRANIA. S. P. A. June 14, 1965 [June 12, 1964], No.25086/65. Heading G2C. Colour photographic materials having a silver halide emulsion layer in which water-insoluble couplers are dispersed in the emulsion as fine droplets of a solution thereof in a water-immiscible organic solvent, are prepared by adding to the silver halide emulsion first an aqueous alkaline solution of at least one colour coupler containing in its molecule an aliphatic chain of at least 8C and also an acid group which gives water solubility, and then the colour coupler solution to be dispersed, the said couplers being such as to give, on development, colours of substantially identical absorption spectra and the amount of the said aqueous alkaline solution being such as to give a concentration of the said water-soluble colour coupler of 0.25 to 10% by weight of dry gelatinesilver halide emulsion, and then forming a dry layer of the said silver halide emulsion. Suitable water-immiscible solvents are those listed in Specification 541, 589, N, N-dibutyl myristamide and oleyl alcohol. Specified water-insoluble couplers are 1 - phenyl-3-(4'-{4"-dodecyl-anilido sulphonyl}-phenylureido) -5-pyrazolone and 1- hydroxy-2-N-α-endecyl-benzyl naphthamide. Specified water-soluble couplers are 1-(4'-(3"- carboxy-5"-stearoylamino-anilido-sulphonyl) phenyl-carbamoyl)-3-anilino-5-pyrazolone and 2-N- (4' - (3"-{3"'- carboxy- 5"'-stearoyloylaminoanilido-sulphonyl}benzamido)-(#-phenylethyl)- carbamoyl- 1 -naphthol.
Patent GB-1352936-A (GB)
Title: Reinforced structural members and methods of making them
IPC: B64C1/00
Filed: 1971-04-19
Abstract: 1352936 Making structural members AVCO CORP 19 April 1971 [24 March 1970] 25134/71 Heading B3A [Also in Division E1] A method of making an integrated metalcomposite structure of high strength/weight ratio comprises constructing a metal structural member 11, e.g. in the form of a tube or girder, with at least one passage 16, threading a plurality of high modulus filaments 12 into the passage so that the filaments occupy 40% to 70% by volume of the cross-section of the passage, optionally evacuating the passage, filling the passage with a heat curable resin, and curing the resin in situ by applying heat to the structural member. The filaments may be coated with a semi-cured resin prior to threading them into the passage, whereby the filaments are more uniformly distributed within the passage, semi-curing occurring as a result of suitable adjustment of the quantity of hardener, the resin being fully cured by applying heat after threading the filaments into the passage. The step of evacuating the passage may then be omitted if desired. The wall of the passage 16 may be coated with a polymeric matrix 13 prior to threading of the filaments, the matrix 13 having a lower modulus than the resin whereby an increased bond is created during the heat curing step, which is preferably in two stages at respectively low and high temperatures. Apparatus for carrying out the method comprises a guide structure (Fig. 5, not shown), for guiding bundles of filaments during the threading step, and a curing apparatus which comprises electrical heating elements 26 surrounding the structural member 11 and an arrangement for feeding in the resin under reduced pressure which consists of a reservoir 29 connected to a vacuum pump, a conduit 31 connecting the reservoir 29 sealingly to one end of the passage 16, a resin pot 36 containing the resin and connected by a conduit 33 to the other end of the passage 16, and a valve arrangement 37 for admitting air at a controlled rate to the pot 36. The filaments used are preferably boron but may alternatively be of glass or graphite. The metal structural member may be of aluminium alloy, magnesium steel or titanium. The resins used may generate a volatile substance when being heat cured, e.g. phenolics and polyimides may be used as well as epoxy and polyester resins.
Patent GB-277181-A (GB)
Title: Improvements in drying, calendering, and like machines
IPC: D21F5/02
Filed: 1926-10-09
Abstract: 277,181. Milne, S. Oct. 9, 1926. Drying.-Hot air is directed on to the felt j of a paper calendering machine through perforated ducts g, h connected respectively to the hollow frames and the ducts f connecting adjacent frames. The frames communicate through ducts m, n with an air supply duct o.
Patent GB-588934-A (GB)
Title: Improvements in or relating to the building of concrete structures
IPC: C04B20/00
Filed: 1944-12-15
Abstract: Concrete structures such as roads and dams are prepared from stones of two different sizes, the smaller stones being approximately 1/12-1/18 of the linear dimensions of the larger ones, by forming layers of the larger stones with intervening gaps which are filled with the smaller stones, and pouring grout into the gaps either before or after the insertion of the smaller stones.  The gaps between the large stones are approximately equal to a sixth of the average dimension of the large stones.  When the small stones are inserted before application of the grout, they are at least 3/4 inch in size for depths up to 9 inches and at least 1 inch in size for depths of over 99 inches; if the grout is applied first in which case sufficient is employed to half fill the gaps, the smaller stones may be of not less than 1/2 inch grade.
Patent GB-1406193-A (GB)
Title: Merchandise holding and releasing link for use in a vending machine merchanidse dispensing module
IPC: G07F11/58
Filed: 1973-07-19
Abstract: 1406193 Vending machines POLYVEND Inc 19 July 1973 [27 July 1972] 25249/74 Divided out of 1406191 Heading A4T The apparatus disclosed in this Application is also described in (Specification 1406191), but the claims relate to a link of a chain for holding and releasing packages, particularly in a vending machine.
Patent GB-1007234-A (GB)
Title: Oxidation of anthracene to anthraquinone
IPC: C07C51/31
Filed: 1964-06-18
Abstract: A method for producing anthraquinone from anthracene comprises (a) vaporizing and mixing anthracene with an oxygen-containing gas and recycle gas; (b) passing through a reaction zone containing V2O5 at 350-450 DEG  C. and 5-10 p.s.i.g.; (c) condensing the anthraquinone thus formed; (d) scrubbing the remaining gases with water; and (e) passing 55-85% of the scrubbed gases to (a) as recycle gas to reduce the oxygen concentration and to maintain it below the inflammability limit.
Patent GB-133961-A (GB)
Title: Bar Windings for Electric Machines.
IPC: H02K3/14
Filed: 1919-10-15
Abstract: 133,961. Punga, F., and Roos, H. May 4, 1918, [Convention date]. Conductors.-Bar conductors are built up of a number of flat insulated strips a<1>, a<8>, Fig. 1, piled one above the other, and are formed with cranked portions e so that each conductor passes in turn from a position at the bottom to ai position at the top of the slot for a part of its length. The strip a<1> which is at the top of the slot at one end and at the bottom of the slot at the other end need not be bent and may be made thicker than the others. Recesses lined with insulating- material may be made in the various strips to receive the cranked portions e so as to produce a bar with smooth sides. Figs. 10 and 11 show a modified arrangement for use with very thin strips, each strip being folded twice along the lines n, o. Two or more strips may be transposed at one point, as shown in Fig. 12. The transpositions may be effected outside the slots.
Patent GB-317732-A (GB)
Title: Ball joint connection for electric cables
IPC: H01R35/04
Filed: 1929-08-20
Abstract: 317,732. Reittinger, G. Aug. 20, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Collectors.-A coupling for twin wire lead 17 allowing both rotary and angular movement comprises a hollow spherical contact element 3 engaging a ring 15, and a central joint for the second conductor consisting of a head 9 engaging in a cup 10. The spring 8 that presses the head 9 into the cup 10 also maintains pressure between the element 3 and ring 15. The contacts 10, 15 are connected to sockets 12, 13. A rubber hood 18 encloses the joint and a rubber ring 16 secures the lead 17.
Patent GB-787141-A (GB)
Title: Improvements in or relating to trigger circuit-arrangements comprising two transistors
IPC: H03K3/281
Filed: 1955-09-05
Abstract: 787,141. Transistor two-stable state and switching circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 5, 1955 [Sept. 8, 1954], No. 25413/55. Class 40 (6)] In a circuit employing a PNP and a NPN transistor which are either both conducting or non-conducting, the base of each is coupled over a resistor to another electrode of the other transistor, resistors being connected from the base to supply potentials, the third electrode of each transistor being connected to other supply potentials. Symmetrical junction transistors T1, T2 are connected from base to collector over resistors R2 and R3, the emitters being connected to taps P2, P3 on the supply. The base of each transistor is connected over resistors R1, R4 to point P1, P4 of the supply. In the off condition no appreciable current flows in the circuit. The transistor T2 is maintained cutoff since the potential of the base is at P4 and the emitter at P3 with the collector at P1 the electrodes of transistor T1 being maintained at the corresponding opposite potential. A negative-going pulse applied to the base of transistor T2 causes it to conduct, the flow of current through resistors R1, R2 raising the base potential of transistor T1 so that it becomes conductive, the flow of current through resistors R3, R4, lowering the base potential of transistor T2. In the on condition, transistor T2 operates with the base and collector slightly negative with respect to the emitter so that an associated transistor T3 is rendered conducting. In a similar manner transistor T4 is rendered conducting by its connection to the collector of transistor T1 and a connection is made between the points K1 and K2. The connections to the transistors T3, T4 may be interchanged. When the connection between the point K1, K2 is effectively broken, transistors T1, T2 are conducting so that a low resistance path is placed in shunt to the small capacity between the electrodes of transistors T3, T4 and signals are effectively attenuated. Specification 753,014 is referred to.
Patent GB-1300171-A (GB)
Title: Improvements in and relating to pool skimmer and control devices
Inventor: BAKER WILLIAM OSBORNE
IPC: E02B15/10
Filed: 1970-05-27
Abstract: 1300171 Swimming pool filter device W O BAKER 27 May 1970 [28 May 1969] 25418/70 Heading A4N [Also in Division F2] A swimming pool filter device has a body 12 comprising an upper inlet 24 which receives surface water from the pool, an inlet port 48 communicating with the main body of the pool, an outlet port 46, a strainer basket 40 resting on a rim 38 below the inlet port 48, and a rotatable control plate 42, having a sealable opening 60 and a depending flange 76, mounted between the upper inlet 24 and the inlet port 48, said flange 76 being able selectively to open or at least partially close said inlet port 48. A buoyant stopper 62 is used to close said plate opening 60. The stopper 62 is attached by a cord 64 to one of two lugs 66 on the plate having ears 72 which trap the plate 42 under an annular rim 70, and above a sealing O-ring 56 on another annular rim 44 in the body 12. The plate is manually rotatable by the lugs 66 around the vertical axis and may be removed by lifting when the lugs 66 correspond to the two breaks 74 in the rim 70. The buoyant stopper 62 has a shoulder 68, formed in the upper surface of the plate for when the stopper 62 is not in use. The plate 42 may be transparent and marked with indicia showing the position of the depending flange 76. The outlet 46 leading to a pump may have a slide valve 50 controlling the flow of water. The body 12 may have a removable top 20 to permit inspection and removal of plate 42, and basket 40, and a spring-loaded valve 18 in the base. The device allows three modes of operation, water being drawn from the surface of the pool to the outlet port 46 through the plate, from the body of the pool via inlet port 48 to outlet 46 or a combination of both previous operations. The device may be used in combination with several others; an inlet valve 18 in the bottom of the body allows equalization of flow, whilst a slide valve 50 on outlet port 46 controls the rate of flow. Inlet port 48 may be connected by a pipe to a main drain located at the bottom of the pool and, with opening 60 closed, the pump may be operated to lower the water level or remove foreign water from the bottom of the pool.