baber/WOPTO huggingface dataset:
Patent GB-735889-A (GB)
Title: Improvements in or relating to electrical resistors
Inventor: PLANER GEORGE VICTOR
IPC: H01C17/245
Filed: 1952-11-06
Abstract: 735,889. Resistance coatings and deposits. PLANER, G. V. Jan. 29, 1954 [Nov. 6, 1952], No. 27931/52. Class 37. Relates to helical film resistors with the resistance track-shaped or designed to provide more even heat distribution. In Fig. 1 a helical groove a is formed (e.g. cut) in the resistance film b (e.g. cracked carbon) and the pitch is smallest adjacent the end caps c, d. In a non-inductive resistor two separate constant or (Fig. 2) variable pitch grooves may be cut in opposite sense so as to leave a short section of unspirallized film in the centre of the insulator base o. The resistance film may be applied directly to the ceramic or other insulator base o in the form of a helical band to obtain a track of the correct shape.
Patent GB-1430113-A (GB)
Title: Sheet material trimming
IPC: B42C19/08
Filed: 1973-06-13
Abstract: 1430113 Endless belt conveyers HARRIS CORP 13 June 1973 [12 July 1972] 28092/73 Heading B8A [Also in Divisions B4 and F2] A conveyer arrangement for feeding successive books through a trimming machine (see Division B4) comprises a pair of mating endless belts 114, 116, Fig. 6, driven by an intermittent drive 250, Fig. 9. In order to allow the books to enter between the belts, the leading end of the upper belt 114 is adapted to be raised and then lowered to a gripping position. The drive mechanism comprises a pair of chains 264, 266, Figs. 9 and 10, rotated by an input shaft 256 and connected by pins 282, 284, 286; the shaft 256 is continuously rotated. An output shaft 260 is provided with a drive member 290 having a pair of slots 298, 300 adapted to be engaged by a respective pin. As shown in Fig. 9, the pin 282 first moves into the slot 298 and then engages with stationary cam tracks 312, 314 thereby causing the drive member to rotate through 180 degrees. A dwell period is provided by means of the spacing between successive pins on the chains.
Patent GB-153466-A (GB)
Title: Improvements relating to the construction of roads
IPC: E01C7/14
Filed: 1919-11-13
Abstract: 153,466. Wind, N. de. Nov. 13, 1919. Foundations.-A concrete road has a foundation of compacted broken stone, gravel, cinders, or slag to which is applied a thin retentive layer of asphalt or tar-oil on which a top layer of concrete is laid. The retentive layer, which may include stone or gravel, prevents the grouting of the concrete from flowing into the voids of the foundation layer, and permits free expansion and contraction of the concrete. The concrete layer may be treated with tar-oil. Reference has been directed by the Comptroller to Specifications 2033/74, 17483/87, 16167/00, and 131,453.
Patent GB-1044229-A (GB)
Title: Improvements in and relating to disc brakes
IPC: F16D65/18
Filed: 1964-07-08
Abstract: 1,044,229. Brakes; hydraulic brake control. S. A. FRANCAISE DU FERODO. July 8, 1964 [July 18, 1963], No. 28219/64. Headings F2E and F2F. To prevent variation of the coefficient of friction affecting the action of a disc brake the brake actuating force is modified in response to circumferential movement of the brake pad. In the disc brake shown in Fig. I, fluid from a master cylinder acts on a piston 23 to move the shoe 22 tangentially to disc 18 which rotates in the direction of the arrow F. Fluid then forced from chamber 26 acts in chamber 27 to apply the brake pads 19, 20 to the disc. Any increase of friction moves the member 22 in the direction of arrow F to reduce the pressure in chamber 26 and thus in chamber 27. In a modification (Fig. 3, not shown), the chamber 27 is formed between two opposed pistons and the chamber 26 has a connection 70 to a releasing device 69 (Fig. 9). The master cylinder (Fig. 6, not shown), has a valve 46 embodying a second, residual pressure valve and connects the primary chamber 45 at 67 to the conduit 16. The secondary chamber 57 ahead of the second piston of the master cylinder is connected to chamber 71 of the releasing device, which may be built into the brake structure, pressure from the cylinder moving piston 73, to the left, valve 79 opening to pass fluid through conduit 70 to chambers 26 and 27 to move the brake pads. When the pads engage the disc rising pressure in primary chamber of the master cylinder opens valve 46 to allow this pressure to reach chamber 24. On release of the brake pedal pressure piston 73 moves back to open passage 81 while the pressure in chamber 24 and conduit 16 is released through the master cylinder residual pressure valve. In one embodiment of the disc brake (Fig. 3, not shown), the backing plates of the pads abut the calliper but the brake lining themselves may project beyond the plates to form the abutments to eliminate noise.
Patent GB-1513429-A (GB)
Title: Sulphide containing tin stabilizers
IPC: C08L33/00
Filed: 1975-07-04
Abstract: 1513429 Organotin mono- and polysulphides CINCINNATI MILACRON CHEMICALS Inc 4 July 1975 [26 July 1974] 28286/75 Heading C2J [Also in Division C3] The invention comprises mono-organo and/or di-organotin (mercaptoalkyl ester of a carboxylic acid or mercapto-hydroxyalkyl ester of a carboxylic acid) mono- or polysulphides, the organotin compounds having (a) at least one tin atom bearing one or two C 1-20  hydrocarbyl groups which are alkyl, aryl, alkaryl, cycloalkyl, aralkyl or alkenyl linked to the tin through carbon, (b) at least one mercaptoalkyl ester or mercaptohydroxyalkyl ester of a carboxylic acid group linked to a tin atom through the mercapto sulphur and (c) at least one mono- or polysulphide sulphur group bonded exclusively to tin and linking two tin atoms, the compounds having a tin content of 10-42% by weight and a sulphur content of 8-42% by weight. The compounds may be modified by "overbasing" through reaction with a di- (C 1-20  alkyl) tin oxide or an alkyl stannoic acid. A number of compounds are prepared of various types, amongst them bis[monoalkyltin di- (mercapto alkyl-alkanoate, alkenoate or nicinoleate)] mono or disulphides and compounds of general formulae The compounds are useful as stabilizers for halogenated polymers.
Patent GB-222344-A (GB)
Title: Improvements in or relating to lawn mowers
IPC: A01D34/42
Filed: 1923-11-10
Abstract: 222,344. Drummond, A. Nov. 10, 1923. Lawn-mowers.-The side frames A, A', are connected together by tie rods B, C, forming axles respectively for the cutter D and the driving rollers E, E'. A gear wheel F on a boss f lies in a gear box G formed in the frame A and is driven by ratchet wheels f<1>, f<2>, on the inner end of its boss and actuated by pawls on the rollers E, E<1>. The hollow sleeve d of the cutter D turns freely or. the forward tie bar B and is threaded to take a gear wheel H. The ends of the sleeve are threaded internally to take bushes d<3> that form bearings for the cutter on the tie bar and which are flanged to prevent the gear wheel H unscrewing. The gearing between the wheel F and the wheel H may take the form of a chain or, as shown, a spur wheel J mounted on a pin j projecting through a boss a. The gear case is closed at its top by a cover plate after the gears have been placed in position. A loose collar h, preferably formed with a flange between which and the gear case a felt washer h<1> is placed, may be employed to close the opening g' through which the gear wheel H is inserted in the case. Gear cases and driving-gear may be provided on both sides of the machine. The gear cases may be omitted.
Patent GB-235088-A (GB)
Title: Improvements in and relating to cultivators
IPC: A01B33/14
Filed: 1924-11-27
Abstract: 235,088. Grams, W. Nov. 27, 1924. Rotary-tool implements; tools, mounting yieldingly.-In cultivators in which rigid tines are resiliently and pivotally mounted on crank arms on a rotary shaft, three crank arms 2 are provided for each tine 3, the tine being pivoted on the central arm and two torsional springs 11 being arranged one on each side of it with their inner ends connected to the tine and their outer ends to the two outer crank arms 2. The pivot 7 of the tine 3 is in the axis of rotation of the springs 11.
Patent GB-815221-A (GB)
Title: Improvements in trailer tipping attachments for tractors
IPC: B60P1/20
Filed: 1954-10-04
Abstract: 815,221. Tipping vehicles. ELLIOT, C. N. Oct. 4, 1955 [Oct. 4, 1954], No. 28466/54. Class 108(1) A tipping mechanism for elevating the towbar of a trailer using the tractor power lift links comprise a cranked frame having pairs of arms p pivotally mounted on the tractor by radius links s, and arms j carrying a transverse member to which the tow-bar x is attached. The cranked frame is 'inverted to tip the trailer by pairs of links a which connect the pivot g at the apex of links p and j to the power lift link e at d. A hand lever z operates hooks which engage a transverse member of the cranked frame to prevent tipping when not required.
Patent GB-869934-A (GB)
Title: Improvements in and relating to semi-conductor units and methods of making them
IPC: H01L23/045
Filed: 1957-09-10
Abstract: 869,934. Semi-conductor devices. PHILCO CORPORATION. Sept. 10, 1957 [Sept. 10, 1956], No. 28515/57. Class 37: [A]so in Group XXII] A semi-conductor device comprises semiconductor material in a sealed housing which is formed by joining two metal members by cold working, the worked position having a thick and a thin part. Fig. 2 shows a transistor 12 with collector electrode 19 secured to metal slug 11 which is held in contact with a heat sink 16 by metal clamping ring 17. Cap 14 is sealed to slug 11 by flange 10 shown in more detail in Fig. 3. The metal slug 11 is formed with a peripheral groove 29 and the metal flanges 36, 37 on slug 11 and cap 14 are compressed by cold working to a shape consisting of a thick portion 42 lying between two thin portions 41 and 43. The procedure facilitates the flow of metal and reduces the chance of flaws and cracks. The metal members preferably consist of copper. Specification 869,933 is referred to.
Patent GB-1019149-A (GB)
Title: Improvements in or relating to the manufacture of 1,2,3,4-tetrachlorobutane
Inventor: DAY RUSSELL WILLIAM
IPC: C07C17/02
Filed: 1963-07-19
Abstract: 1,2,3,4-Tetrachlorobutane having a predominant proportion of the solid isomer is prepared by reacting butadiene with chlorine in a solution of between 0.1 and 20% by weight of pyridine in an inert solvent.  The solvent may be, for example, carbon tetrachloride or sym-tetrachloroethane but more conveniently is 1,2,3,4-tetrachlorobutane initially added to the reactants and supplemented by the liquid isomer and, if the reaction temperature is above 60 DEG  C., the solid isomer product in the molten state. The solid isomer, which may be isolated from the reaction product by filtration, may be dehydrochlorinated to form 2,3-dichlorobutadiene.
Patent GB-1179751-A (GB)
Title: Improvements in or relating to the Transmission of Analogue Information
IPC: G08C15/10
Filed: 1967-06-21
Abstract: 1,179,751. Electric selective signalling. COMPAGNIE DES FREINS ET SIGNAUX WESTINGHOUSE. 21 June, 1967 [19 July, 1966], No. 28638/67. Heading G4H. [Also in Division H4] In a transmission system continuously variable items of analogue information are transmitted by means of a cycle of signals. The cycle contains as many time slots as there are items and each time slot contains a signal of unique frequency whose duration is determined by the item. The intervals between successive unique frequencies are filled by a pilot frequency. At the receiver the unique frequency corresponding to a particular item of information is selected for control purposes, and the pilot is selected for use in a monitoring system.
Patent GB-1111129-A (GB)
Title: Improvements in winding apparatus
Inventor: MACKIE JOHN KAY PRINGLE
IPC: B65H54/00
Filed: 1964-07-10
Abstract: 1,111,129. Winding sliver balls. JAMES MACKIE & SONS LTD. 2 July, 1965 [10 July, 1964], No. 28669/64. Headings DID and DIN. In apparatus for winding balls of sliver having a nozzle 20 for feeding sliver 12 to the ball 32 and means for traversing the nozzle and simultaneously rotating it to false twist the sliver, when the ball is nearly completed, the traverse mechanism is stopped shortly before the roller 33 driving the ball so that the sliver wound at the end of the wind has reduced or no twist to facilitate breakage of the sliver on doffing. In addition the sliver is wound at one position on the ball, preferably the centre, which facilitates the tucking in of the broken end. As shown sliver 12 leavs drawing frame rollers 11 and passes via Hollers 13, pulley 14 and nozzle 20 to the ball 32. Pulley 14 is mounted on pivoted arms 18, 15 so that the length of the sliver path between roller 18 and nozzle 20 is constant despite the traversing movement of nozzle 20. The nozzle is rotatably mounted on a carriage 17 reciprocated along slides 26 by an endless chain devise 27 which is circulated by sprockets on shaft 39 receiving drive from the drawing frame via a clutch and braking device 41. A gear 21 adjacent the nozzle 20 engages a fixed rack and nozzle 20 is thereby rotated during is traversing motion. When the wind is almost complete a switch 51 is operated by a counter so that when a switch 57, which has been operated once in each traverse cycle is next operated, a circuit is closed to open clutch 41 and brake the drive to the traversing mechanism. Simultaneously drive to the drawing frame and to the ball driving roller 33 is suspended but due to the motion of the parts a length of untwisted, untraversed sliver is wound onto the ball before it comes to rest. Also simultaneously an automatic doffing operation is initiated. Ball 32 is moved from roller 33 and a doffing plate 60 is moved by rotation of a threaded rod 61 to doff the ball from spindle 31. The plate 60, then engages a reversing switch which causes it to return to its normal position and in its movement operates switch 63 to restart the overall operation of the machine.
Patent GB-1384967-A (GB)
Title: Silver halide photographic material
IPC: C08L33/02
Filed: 1973-06-15
Abstract: 1384967 Photographic silver halide materials FUJI PHOTO FILM CO Ltd 15 June 1973 [15 June 1972] 28702/73 Heading G2C Photographic silver halide materials have, as a non-stick layer, at least one non-photo-sensitive surface layer containing a homopolymer or a copolymer of a monoester of an aliphatic polyalcohol with acrylic acid or methacrylic acid, the homopolymer or copolymer constituting at least 10 wt per cent of said surface layer. The layer may be on the emulstion side or on the reverse side of the material, or it may be a layer which prevents sticking at an intermediate stage of coating a number of layers and which is itself subsequently overcoated. Polymers specified include poly-2-hydroxy-ethyl methacrylate, poly-3-hydroxy-propyl methacrylate, copoly- 2-hydroxy-ethyl methacrylate/acrylamide, copoly-2-hydroxyethyl methacrylate/methyl methacrylate, copoly-2-hydroxyethyl acrylate/ 2-hydroxyethyl methacrylate, the graft copolymer of hydroxyethyl cellulose with 2-hydroxyethyl methacrylate and the graft copolymer of gelatine with 2-hydroxyethyl methacrylate.
Patent GB-784022-A (GB)
Title: Collapsible sectional curing bag
IPC: B29C33/76
Filed: 1955-10-10
Abstract: 784,022. Inflatable sectional tyre curing bags. GOODYEAR TIRE & RUBBER CO. Oct. 10, 1955 [June 24, 1955], No. 28770/55. Class 87(2). Relates to the vulcanizing of repaired portions of tyre covers of which the internal sidewall diameter S, Fig. 3, is greater than the bead diameter B and comprises an inflatable segmental curing bag 1, Fig. 1, having a longitudinal cavity 7 extending radially from the inner circumference 8 toward the crown 9 for a distance greater than one half of the radial sectional diameter R whereby transverse compression of the inner circumference causes a substantial reduction in the sidewall diameter. The ends are closed at 2 and 3 and the material is rubber reinforced with fabric of a thickness such that the bag retains its shape when deflated. Air, steam or other fluid is introduced through a valve 4 and the bag is drained through an outlet valve 5 and hose 6. When the bag is in position in the tyre cover the cavity 7 is internally supported by a solid filler 18, e.g. of metal. In application to the cover 13 to be vulcanized, Fig. 5, the bag is folded to bring the beads together and held by clamps connecting eyebolts 16, the beads 14 of the cover are spread apart by tools 17, the bag is inserted and positioned, the clamps are removed, and the filler 18 is passed through the bead opening and inserted in the cavity 7. The bag is then inflated to force the outer surface of the cover against the repair mould (not shown).
Patent GB-886145-A (GB)
Title: An improved method of reducing evaporation losses from liquid storage tanks
IPC: B65D88/34
Filed: 1960-08-19
Abstract: 886,145. Flexible covers for tanks. SHELL INTERNATIONALE RESEARCH MAATSCHAPPTJ N.V. Aug. 19, 1960 [Aug. 21, 1959], No. 28793/60. Class 69 (1). A floating cover for the reduction of evaporation losses from a tank comprises a layer 1 of foamed plastic disposed between two layers 2 of plastic foil which are so welded at 3 as to subdivide the cover into liquid-tight cells 4. If the layer 1 has inter-communicating pores, the roller pressure and temperature during welding are such as to render it substantially non- porous where the welding occurs. An annular strip 10 of foamed plastic is connected by a plastic strip 9 and buttons 11 to the cover to form a seal with the tank wall. If the tank is rectangular, plastic strips alone may be used for the seal. The layers 1 and 2 may be of polyvinyl chloride.
Patent GB-502578-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H03F1/36
Filed: 1937-10-22
Abstract: 502,578. Valve amplifying circuits. WHITE. E. L. C., and HARKER, M. G. Oct. 22, 1937, No. 28842. [Class 40 (v)] In a valve amplifier in which the output impedance is substantially equivalent to a resistance shunted by a capacity and a feedback impedance including a shunt capacity is provided to increase the frequency range over which substantially uniform amplification occurs, an inductance is provided in series with the capacity in the feedback impedance to further increase th frequency range. The Figure shows-an arrangement in which a feedback resistance Rc is provided in the cathode lead and shunted by an inductance LC in series with a condenser Cc. The Specification gives a mathematical analysis of the circuit. The value of the added inductance is preferable equal to ¢ Cc.1/g2 where g is the mutual conductance of the valve. Specification 465,118 is referred to.
Patent GB-1269808-A (GB)
Title: Theft-deterrent devices for motor vehicles
Inventor: DELVAUX JEAN LEON LUCIEN
IPC: B60R25/00
Filed: 1969-06-06
Abstract: 1,269,808. Vehicle anti-theft device. J. L. L. DELVAUX. 6 June, 1969 [6 June, 1968; 24 March, 1969; 18 April, 1969], No. 28875/69. Heading B7J. A vehicle anti-theft device engageable with the gear lever has an operative position in which it may be locked by a lock or bolt and in which it allows the gear lever to be moved into first forward and reverse gears only, thus permitting manoeuvring of the vehicle, e.g. for parking, but not normal road travel. For a steering column mounted gear lover 7, Fig. 4, the device 5 is attached to the column 6 and has a pair of jaws 8, 9 mounted on spindles 10, 11, and pivotable from the open position shown, in which the gear lever 7 is unimpeded, to a closed position in which it is locked by a key, inserted in hole 15, actuating buttons 14, and in which recesses 12 and 13 enable only first and reverse gears to be engaged. The device may comprise a sleeve 5a, Fig. 5, slidable on a spindle 10a between open and closed positions. In another arrangement, Figs. 7a, 7b (not shown), the device includes a flat plate having a shaped slot and pivotable about a horizontal spindle between open and closed positions. For a floor mounted gear lever 24, Fig. 8, the device comprises a channel member 30 fixed to the vehicle floor and provided with a lock 28 and bearings to receive a spindle 22 on which is mounted a plate 21 having a shaped slot 23. The device may also comprise a removable plate, Figs. 9, 10a, 10b (not shown) which in use is locked to part of the vehicle rigid structure to restrict movement of the gear lever, and when not in use it is removed from this part and may be attached to the gear lever or completely removed therefrom, in which case the plate may have an opening additional to the shaped slot to allow passage over the gear knob.
Patent GB-383022-A (GB)
Title: Improvements in spring washers
IPC: F16B39/10
Filed: 1931-10-17
Abstract: 383,022. Locking nuts. J€GER, H., Haspe, Hagen, Westphalia, Germany. Oct. 17, 1931, No. 28897. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 16, 1932]. [Class 89 (i).] A spring washer g of the kind which are initially bowed and formed with an upturned end h to engage the side of the nut, has two downward projections k to bite into the surface against which the nut is tightened. Two opposite sides of the washer may be corrugated or all four sides may be arched upwards.
Patent GB-482430-A (GB)
Title: Improvements in or relating to mudguards for vehicles
IPC: B62J15/00
Filed: 1937-10-22
Abstract: 482,430. Mudguards. AUTO UNION AKT.-GES. Oct. 22, 1937, No. 28924. Convention date, Oct. 23, 1936. [Class 136 (i)] In a mudguard, more particularly for motor-cycles, of the type having a movable part adapted to be swung out of the way to facilitate access to, or removal of, the wheel, the movable part is held in the displaced position by one of the stays. The movable part 11 of the mudguard is pivoted to the main part 1 at 12, and is held in the normal position by a U-shaped stay 3, which is provided on each side with a screw stud 15, adapted to engage a slot 18 at each end of a U-shaped bracket 17 fixed within the part 11, the studs 15 being secured by nuts. The bracket 17 embraces the curved portion or bridge 16 of the stay 3. When the part 11 is to be swung upwards away from the wheel, the stay 3 is detached from the bracket 17 and swung upwards to engage the slots 18 with slots 14 in a plate 13 on the pivoted end of the part 11, the plate 13 normally fitting within the fixed part 1 so as to make a mudtight joint between the two parts of the mudguard.
Patent GB-174150-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02F1/36
Filed: 1920-10-13
Abstract: 174,150. Crossley, Sir K. I., and Webb, W. Le P. Oct. 13, 1920. Cylinders, construction of.-A combustion chamber h, formed on one side of the axis of the cylinder, has a uniform cross-section between the cylinder and the axes of the inlet and exhaust valves a, b, and is terminated by an unpenetrated wall h carried round adjacent to the peripheries of the valve heads. The valves a, b are coaxial, and in a horizontal engine the exhaust valve b is at the bottom of the cylinder. The igniter p is as near the centre of the charge as possible, and the remainder e of the cylinder end follows the curve of the spherical head of the piston d.
Patent GB-1390433-A (GB)
Title: Processing apparatus
IPC: G03D3/13
Filed: 1972-06-21
Abstract: 1390433 Rollers ILFORD Ltd 20 June 1973 [21 June 1972] 29012/72 Heading F2U [Also in Division G2] A processing apparatus for laminar material comprising a liquid container and at least one rotatable bottom roller, mounted in the container and the bottom roller(s) being of such density that in use the liquid in the container tends to force the bottom roller(s) into abutment with the top roller(s). The rollers may be hollow or composed of cork coated with a plastics material.