baber/WOPTO huggingface dataset:
Patent GB-625054-A (GB)
Title: Improvements in or relating to high-frequency heating apparatus
IPC: H03L5/02
Filed: 1946-09-18
Abstract: 625,054. Dielectric heating. STANDARD TELEPHONES & CABLES, Ltd., and BURTT, K. M. Sept. 18, 1946, No. 28014. CClass 39(iii)] [Also in Group XL(c)] A high-frequency dielectric heating apparatus comprises a self-excited oscillator having means for increasing the grid driving voltage as the loading is increased in order to compensate for decreased anode voltage swing. Under no-load conditions the grid drive may be just sufficient to maintain oscillation. As shown an oscillator valve 1 has an anode tuned circuit comprising an inductance L T  and a capacitance C T   between the adjustable plates of which the " work is placed. The feedback is provided by a series inductance capacitance circuit X L  X C  connected across the tuned circuit and having the junction point connected to the grid. Reactance X C  may be constituted by the input capacitance of the valve. The reactance of the inductance is considerably larger than that of the capacitance so that the grid voltage is 180 degrees out of phase with the anode voltage. An increase of load due to closing of the plates or increase of the area of the work increases the capacitance C T  The resulting decrease of frequency causes an increased voltage to be developed across X C  and the grid drive thus tends to maintain its optimum value for full anode voltage swing. Precise compensation may be obtained by arranging that the " work " completely covers the electrodes or by making either feedback reactance adjustable by providing a parallel trimming reactance of opposite sign. In an alternative arrangement (Fig. 5 not shown) two circuits as shown are arranged in push-pull, the two condensers X c  being combined into one condenser connected between the grids.
Patent GB-363710-A (GB)
Title: Improvements in or relating to adhesive mountants
IPC: G03C11/14
Filed: 1930-09-19
Abstract: A mountant for securing together articles of paper and cardboard, such as a photographic print to a mount, comprises a thin paper or fabric base coated on both sides with substances having adhesive properties developed respectively by heat and moisture.  The heat-adhesive substances such as shellac, sandarac, and gum elemi and the moisture-adhesive substances such as glue, gelatine, gum arabic, and casein may be applied in separate layers.  Paper is coated on both sides with a solution of shellac in methylated spirit, dried, and the shellac layer then coated with an aqueous solution of glue containing glacial acetic acid and chrome alum.
Patent GB-1506077-A (GB)
Title: Reinforced elastomeric hose articles
IPC: B29B15/00
Filed: 1976-07-06
Abstract: 1506077 Reinforced elastomeric hose GATES RUBBER CO 6 July 1976 [7 July 1975] 28072/76 Heading F2P A reinforced vulcanized elastomeric hose comprises a first heat setting elastomeric annular member 12 of a determinable permeability comprising a copolymer of mixed mono-olefins and polyolefins, a second heat setting elastomeric annular member 24, spaced from the first annular member of a material dissimilar from the copolymer and not readily bondable thereto, a reinforcement 22 embedded within the hose and free from contact with the first annular member; and an interlayer 26 of a heat setting halogenated butyl elastomer interposed between and mutually bonded to the first and second annular members, the interlayer exhibiting a permeability which is less than the permeability of the first annular member. The reinforcement is preferably a fabric and a reinforcing coil 18 may be incorporated. Alternatively the fabric 22 may be embedded in the cover 24 (Fig. 4, not shown). Examples of materials and a preferred method of making are given.
Patent GB-797866-A (GB)
Title: Improvements in or relating to windows and window operating devices for motor-cars and other vehicles
IPC: E05F11/38
Filed: 1956-09-14
Abstract: 797,866. Operating vehicle windows. SILENT CHANNEL CO., Ltd. Sept. 14, 1956 [Nav. 21, 1955], No. 28226/56. Class 20(3) An operating device for a vertically slidable vehicle window 3 not supported, or guided, along its lateral edges by rails, or channels, comprises a slide 5 the web 4 of which carries a transverse support 6 with channels 7 for receiving the lower edge of the outwardly curved window pane 3 accommodated in a housing 10 in the vehicle door 1, and which has, along each side, two resilient cut out tongues 15 each carrying a guide roller 16 which engages the corresponding rounded side 18 of a resilient vertical guide rail 11 secured in the housing 10. The drive for the window 3 comprises a crank operated unit 9 having a movable arm 8 carrying, at its free end, a roller which is slidably engaged in a slot 21 in a flange 20 depending from the web 4, the guide rail 11 being provided, at its upper end, with an inwardly inclined part 14 so that during the final closing movement of the window, the slide 5 moves inwardly and the window carried thereby is correspondingly tilted toward a step 12 provided around the three sides of the window aperture. The step 12 can be provided with a flat resilient sealing strip made e.g. of rubber, sealing lips 13 being provided along the lower edge of the window aperture. In a modification, Fig. 13, the guide 11 is not inclined from the vertical at 14 but instead, is provided with an inclined bearing surface 22 which, during the final closing movement of the window 3, is engaged by a roller 23 on the lower end of a lever-like projection 24 of the slide web 4, the latter being tilted inwardly from its vertical position so that the window is inclined towards the step 12. The mounting of the rollers 16 on the resilient tongues 15 is sufficiently flexible to permit the tilting of the slide web 4.
Patent GB-337136-A (GB)
Title: Manufacture of readily soluble salts of acridine bases substituted in 9-position by an amino-group
IPC: C07D219/10
Filed: 1929-09-19
Abstract: 337,136. I. G. Farbenindustrie Akt.- Ges. Oct. 8, 1928, [Convention date']. Acetates of 9-aminoacridine or its substitution products, which are readily water-soluble, are prepared by treating the base with acetic acid and isolating the product. The compounds are intended for therapeutic use. Examples are given of the preparation of the acetates of 7-ethoxy-3 : 9- diaminoacridine, 9 - aminoacridine, 7-methyl-9- aminoacridine and 3 :9-diaminoacridine. Reference is made to the treatment of 9-aminoacridine substituted in other positions by alkyl, alkoxy or amino groups. 7-Methyl-9-aminoacridine is prepared from ochlorobenzoic acid and p-toluidine by a process analogous to that described in Specification 176,038. From the p-methyl-diphenylaminocarboxylic acid first produced is obtained the acridone and then 7-methyl-9-chloracridine which is treated with ammonia.
Patent GB-1201889-A (GB)
Title: Control circuit for engine starter motor
IPC: F02N11/08
Filed: 1969-06-06
Abstract: 1,201,889. Starting I.C. engines. FORD MOTOR CO. Ltd. 6 June, 1969 [26 July, 1968], No. 28662/69. Heading H2H. [Also in Division H3] A starter motor circuit includes an arrangement for preventing further actuation of the motor until a predetermined time has elapsed since a previous actuation. In the embodiment shown in Fig. 1, a thyristor 14 is connected between the starter switch 12 and the starter relay coil 16. Initially, when the switch 12 is closed, a transistor 22 is turned on, the thyristor 14 is gated, and the contacts 18 of the starter relay close to allow the motor 20 to be energized from the battery 10. Also, a capacitor 34 is charged through a diode 28. Opening of the switch 12 results in reverse biasing of the thyristor 14, and reclosure of the switch 12 cannot trigger the thyristor again since the charge on the capacitor 34 turns on a transistor 26 which in turn holds off the transistor 22. After several seconds, the charge on the capacitor will have leaked away sufficiently for further actuation of the starter motor to be possible. The capacitor 34 may also be connected to the alternator 40 to prevent actuation of the starter motor when the engine is running. In an alternative arrangement, Fig. 2 (not shown), the transistors 22, 26 are replaced by a single field-effect transistor.
Patent GB-1074036-A (GB)
Title: Improvements in and relating to seals for rotating shafts
IPC: F01D11/00
Filed: 1965-07-06
Abstract: 1,074,036. Stuffing-box substitutes. BROWN BOVERI & CO. Ltd. July 6, 1965 [July 8, 1964], No. 28666/65. Heading F2B. A sliding ring type seal for a rotatable shaft 1 comprises a ring 8 prevented from rotation and a ring 7 rotatable with the shaft, at least one sliding surface of the rings being provided with a layer 11 of hard wear resistant material, the or each ring carrying the layer having a thermal conductivity at least as high as that of bronze whereby cooling fluid contacting the ring or rings will dissipate the heat generated in the seal. The ring 8, which may be of bronze, is fitted with a ring 12 of e.g. carbon and is urged axially by springs 9 into contact with the layer 11 of hard material, such as chromium plate formed on the ring 7 which may be of copper, aluminium, or silver. Cooling liquid, which may be oil, is fed from a duct 6 through an annular passage defined by the inner surfaces of the rings 7, 8, a sleeve 13 and the shaft, a small amount of oil leaking past the rubbing surfaces of the seal and the remainder passing out of a housing 2 via a clearance 5. In a modification, the ring 8 may be formed with concentric channels (20, Fig. 3) which communicate with a pair of bellows (15) between which a cooling liquid is supplied; the pressure of the liquid also serves to urge the ring 8 into contact with the ring 7. In a further modification cooling liquid is fed through a helical pipe (16, Fig. 6) into one of the concentric channels, the liquid then circulating in the latter and being returned via a second helical pipe 17. A third helical pipe 18 is provided for feeding a lubricating liquid through the seal as described with reference to Fig. 1. A third source of fluid Q4 may also be used to cool the seal.
Patent GB-631642-A (GB)
Title: Improvements in delivery vehicles for goods
IPC: B62D61/06
Filed: 1947-10-27
Abstract: 631,642. Controlling motor vehicles. STIEGER, H. J. Oct. 27, 1947, No. 28676. Addition to 594,628. [Class 79 (v)] In a delivery vehicle as described in the parent Specification having a single control member which operates the vehicle brakes and through a throttle control a centrifugal clutch, a lever movable with the control member is coupled through a lost motion connection to a spring- loaded platform for the operator so that the platform must be rocked against the spring before the control member can be moved from its brake applying position with consequent automatic return to that position if the force acting on the platform ceases. As shown the brakes on the wheel 3 can be applied by anticlockwise rotation, as seen in Fig. 2, of the control member 13, a protuberance on the member engaging a radial arm 11 freely mounted on a torque tube 12 and connected by a rod 9 to the brake, and a complementary control member 16 at the other end of the tube 12 similarly operates the brake on the wheel 3. The lever 24 is shown integral with the tube 12 but may be integral with one of the control members and is connected by a cable 23 to a two-armed lever 21 which is connected to the spring 25 at that end, is pivoted to a vehicle frame member and connected at the other end to the platform 17 which is hinged at 19 to a vehicle frame member 20. As the operator leaves the platform it pivots under the action of the spring 25 which tensions the cable 23, turns the arm 24 to apply the brakes on the wheels 2, 3. When the operator stands on the platform it turns about the hinge 19 against the action of the spring 25 and slackens the cable 23 thus releasing the brakes and the control members 13, 16. The vehicle can be provided with an operator's seat with the platform operated by the operator's leg. Specifications 594,630 and 631,638 also are referred to.
Patent GB-834076-A (GB)
Title: Improvements in or relating to heat resistant dielectrics
Inventor: HERBERT JOHN MARTIN
IPC: C04B35/475
Filed: 1957-09-11
Abstract: A dielectric ceramic consists of the oxides of strontium, bismuth and titanium, in which, in numbers, (Sr + Bi) atoms is not greater than T: atoms; (Sr + 1,5 Bi) atoms at least equals T: atoms; the ratio (Sr/Bi) atoms lies between 9 and 0,1, and is prepared by mixing the oxides or their precursors, calcining at 1100 DEG C, grinding the calcine with a binder, shaping and firing to 1200 DEG -1400 DEG C.
Patent GB-1474648-A (GB)
Title: Blood bag communication device
IPC: A61M39/22
Filed: 1975-07-08
Abstract: 1474648 Blood transfusion apparatus TERUMO CORP 8 July 1975 [31 July 1974] 28757/75 Heading A5R A device for use in allowing communication between blood bags comprises a connection tube 13 for connection to a bag, and a communication pipe 17 of hard plastics fitted into and secured to the connection tube and having an open end and a sealed portion 17a and a section of reduced wall thickness 17b about which the pipe 17 can be manually broken to provide communication between the blood bags when the tube 13 is connected to a second bag via a pipe 12 to which it is connectable. Communication pipe 17 is secured in the end of the connection tube 13 by adhesive or high frequency welding and its portion 17a preferably at the pipe end is hermetically sealed by fusion, the end of the fused section lightly contacting the inner wall of the pipe 12 to prevent the free end of pipe 17 from being brought to abutment with the fixed end by blood flow from bag 11 to a second bag (14) Fig. 2, (not shown). Fig. 4 (not shown) illustrates fusion patterns dependent on the inner diameter of pipe 12. An annular projection 12a on the inner circumference of pipe 12 prevents the free end of pipe 17 entering the bag 11. The section of reduced wall thickness may be produced by heating and stretching or may be a notch or notches. The connection tube 13 and blood bags 11, (14) are of soft p.v.c.
Patent GB-215273-A (GB)
Title: Improvements in or relating to taps, cocks, and the like
IPC: F16K47/02
Filed: 1923-11-14
Abstract: 215,273. Bancroft, N. W. Nov. 14, 1923. Stop valves; closure members, compound.-A self closing tap for water or other liquid comprises a piston actuated by a push rod and working in a cylinder having inlet and outlet ports communicating with a surrounding chamber, the piston carrying also a conical lift closure member. The piston W with its conical extension M is actuated by a push rod 3 to move within a cylinder 5. The cylinder is surrounder by a chamber A which is always open to the inlet pressure through ports P, while the outlet ports P<1> are controlled by the piston. The valve is closed by fluid pressure, and slow seating is ensured by the conical member M. The head B is provided with a bayonet slot engaging with a pin projecting from the casing, so that the valve may be locked in open position.
Patent GB-775261-A (GB)
Title: Improvements in or relating to apparatus for converting a uni-directional rotationalmovement into one having oscillatory movements about a shaft, or conversely
IPC: H02K49/10
Filed: 1955-10-10
Abstract: 775,261. Magnetic couplings. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 10, 1955 [Oct. 13, 1954], No. 28793/55. Class 35. A device for converting uni-directional rotational movement into an oscillatory movement about a shaft 7, or conversely, comprises two members 1, 3 axially magnetized to produce rings of alternate poles, and driven by gears 4, 5, 6 in opposite directions, and an intermediate member 2 having one or, as shown, two magnetic rings, and caused to oscillate with shaft 7 by a treadle 10, and, if desired, able to reciprocate axially on the shaft 7 and key 7a. During its oscillation, the member 2 is coupled alternately with member 1 and member 3, which ever is the corresponding direction. At the same time, the part 2 may be alternately axially attracted to that rotating member whose movement is in the same momentary direction. A ratchet 9 prevents reverse rotation of the wheels. In a modification the member 2 rotates in alternate directions for a substantial part of a revolution. Specification 747,727 is referred to.
Patent GB-897681-A (GB)
Title: Friction couples
IPC: C22C1/04
Filed: 1960-08-19
Abstract: 897,681. Powder metallurgy. AMERICAN BRAKE SHOE CO. Aug. 19, 1960 [Aug. 26, 1959], No. 28804/60. Drawings to Specification. Class 82(1). [Also in Group XXXIV] In a friction couple comprising a rotor and an opposing member, one of the members is faced with a sintered metal friction element comprising nickel aluminide bonded by Ni as a matrix with a ceramic such as Al 2 O 3  dispersed through the matrix, and the other member is faced with a sintered composition comprising MO 3 A1 bonded with Ni and containing discrete pieces of Mo dispersed through the matrix. The Ni-Al and Mo 3  Al of minus 100 plus 325 mesh are mixed with Ni powder of the same particle size and in the case of the Ni-Al, alumina of minus 60 plus 200 mesh size is added, and with the Mo 3  Al 10-50% of coarse Mo particles of minus 3 plus 10 mesh size produced from 0À03 inch diameter wire are added. The powder mixtures are hot pressed at 1,000-5,000 p.s.i. at 2,200‹F.-3,000‹F. to produce sintered compacts of about “ inch thickness, which are then secured to stainless steel backing members by brazing or by mechanical interlocking. The preferred sintered compositions are 55% Ni-Al, 25% Ni and 20% Al 2 O 3  for one member and 55% Mo 3  Al, 25 % Ni and 20% Mo for the other.
Patent GB-1033236-A (GB)
Title: Automatic weft bobbin changer for a loom
IPC: D03D45/20
Filed: 1964-07-13
Abstract: 1, 033, 236. Bobbin changes. ADOLPH SAURER Ltd. July 13, 1964 [Sept. 20, 1963], No. 28820/64. Heading D1E. An automatic weft bobbin changer for a multibox loom comprises a separate bobbin catcher 14 associated with each compartment of the stationary magazine, each bobbin catcher having a tip bunch remover actuated by the movement of the bobbin catcher and being provided with a duct 25 for sucking the tip bunch off the bobbin which communicates with a suction tube 41 when the bobbin catcher 13 in the transfer position common to all bobbin catchers.
Patent GB-1064520-A (GB)
Title: Oxidation of hydrocarbons
IPC: B01J27/19
Filed: 1964-07-13
Abstract: Alkenols are made from the corresponding olefines by passing a gaseous mixture comprising olefine and oxygen at 150 DEG  to 600 DEG C., a pressure of 1.0 to 15 atmospheres and a space velocity of 500 to 4000 v./v./hour in contact with a catalyst comprising oxidized Cu, Mo and Cr on a refractory support, the catalyst being 1 to 20% of the support and the ratio of ingredients being Cu : Mo : Cr 1 : 0.05 to 2.0 : 0.05 to 2.0.  If desired steam may be incorporated in the reactant gaseous mixture.  Propylene or isobutylene may be oxidized to acrolein or methacrolein respectively.  Typical exit gas mixtures from a reactor contain unreacted olefine, e.g. isobutylene, other carboxylic components, acids, carbon dioxide and carbon monoxide.ALSO:Oxidation catalysts comprise oxidised Cu, Mo and Cr on a refractory support, the catalyst being 1-20% of the support and the ratio of ingredients being Cu:Mo:Cr 1:0.05 to 2.0:0.05 to 2.0.  The catalyst may be prepared from an aqueous ammoniacal solution of a copper halide, a molybdate and a chromate, by imprgenating a refractory material therewith, drying and activating at 400-500 DEG C. for 5-25 hours.  Specified refractory materials are Al2O3, SiO2, pumice, and SiC.
Patent GB-464345-A (GB)
Title: Improvements in, or relating to, the opening and closing of gates of cattle pens
IPC: A01K1/00
Filed: 1935-10-19
Abstract: 464,345. Pens &c. CLARK, T. L. Oct. 19, 1935, No. 28885. [Class 5 (ii)] [Also in Group XXV] The swinging gate B of a cattle milking-pen is operated by a compressed air or vacuum cylinder C, pivoted to one of the side walls of the pen, under control of a valve G which controls the gates of two adjacent pens and also controls the fastenings of the gates, operated by cylinders D. In the arrangement shown, the valve G is connected by a pipe H to a source of vacuum, by pipes h to the opening ends of the cylinders C and by pipes h<3> to the closing ends of the cylinders ; pipe h is connected to a hollow rib on the cylinder C, which opens into the outer end of the cylinder, to minimize the length of flexible connection required at the pivot of the cylinder. Pipes h<3> have a common port in the valve and each pipe h has a separate port, so that each door is opened separately but both are closed together; each pipe h has a branch h<1> to the top of the cylinder D, which operates the gate bolt d<1> at the same time as the opening force comes on the gate. The bolt d<1>, Fig. 5, is pressed downwards by a spring and carries at its upper end the piston of the cylinder D ; its lower end is chamfered, and slides in a bracket f on the gate post to engage a chamfered apertured lug f<1> on the gate. The arrangement of the pipes is slightly modified for the use of compressed air. The Provisional Specification describes a modified valve having separate ports for control of the cylinders D which may thus be arranged to operate in advance of the cylinders C. The speed of operation may be controlled by a valve regulating the air inlet to valve G.
Patent GB-802240-A (GB)
Title: Rubber hydrochloride film
IPC: C08C19/36
Filed: 1956-09-21
Abstract: A packaging film includes 100 parts by weight of rubber hydrochloride, and 25 to 40 parts of liquid plasticiser, at least 12 parts of which consist of an ester of a saturated aliphatic monobasic acid having the formula R.COOR1.OC4H9 in which R contains 6 to 17 carbon atoms and R1 is -C2H4- or -C2H4O.C2H4-, the ester having a boiling point of at least 230 DEG  C. and a freezing point below 0 DEG  C.  The film is pervious to oxygen to allow sufficient of that gas to pass therethrough to maintain the freshness of red meat wrapped therein.  The esters specified are butoxyethyl laurate, pelargonate, stearate and epoxystearate and butoxyethoxyethyl pelargonate and laurate.  The liquid plasticiser may also include dibutyl phthalate and/or 2-ethylhexyl, diphenyl phosphate.  The film is preferably 0.0003 to 0.0012 inch thick and may also contain finely ground silica and polyethylene glycol dilaurate, which prevents fogging of the film by moisture condensation.
Patent GB-1422989-A (GB)
Title: Shutter device
IPC: E06B9/56
Filed: 1973-06-18
Abstract: 1422989 Blinds STAFA CONTROL SYSTEM AG 18 June 1973 [22 June 1972] 28895/ 73 Heading E1J A shutter device comprises a manual device for raising the shutter 14, means 20 for holding the shutter in a raised position, a transducer 27 having a thermally expansible material and having an element 31 operative to release the holding means to allow the shutter to fall. Shutter 14 is rasied manually by a cord 16 guided over rollers 17, 18. Holding means 20 has a jaw 22 biassed by spring 25 to clamp the cord against jaw 21. Transducer 27 comprises a piston-cylinder unit containing expansble material. Radiation from the sun S causes extension of piston 31 which engages cam 24 and releases jaw 22, thus allowing the shutter to fall. On further extension, piston 31 pivots lever 32 and thus adjusts the inclination of the slats. When radiation falls, piston 31 retracts, operation of switch 33 causing motor 35 to raise the shutter. The transducer may alternatively comprise a bellows, bimetallic element or Bowdon tube.