baber/WOPTO huggingface dataset:
Patent GB-645114-A (GB)
Title: Improvements in and relating to the fixing of thermoplastic members to walls or other surfaces
IPC: B29C65/06
Filed: 1948-08-13
Abstract: <PICT:0645114/IV (a)/1> <PICT:0645114/IV (a)/2> Fixing screws for sheets 5 of thermoplastic material such as polyvinyl chloride are covered by caps of the same or other thermoplastic material welded in place.  The cap has an enlarged body part 8 with an annular flange to cover the screw head and a square projection 9 for gripping in the chuck of a portable drill. The cap is pressed on to the sheet whilst rapidly rotating and is friction welded in place as indicated in Fig. 2.  The part 9 may be sawn or filed off.  The caps may initially be of the general shape shown in Fig. 2 and be welded on by heat.ALSO:In the lining of chemical apparatus with sheets 5 of thermoplastic material such as polyvinyl chloride the fixing screws are covered by caps of the same or other thermoplastic material welded in place. The cap has an enlarged body part 8 with an annular flange to cover the screw head and a square projection 9 for gripping in the chuck of a portable drill.  The cap is pressed on to the sheet whilst rapidly rotating and is friction welded in place <PICT:0645114/III/1> <PICT:0645114/III/2> as indicated in Fig. 2.  The part 9 may be sawn or filed off.  The caps may initially be of the general shape shown in Fig. 2 and be welded on by heat.
Patent GB-1379505-A (GB)
Title: Hay-making machines
IPC: A01D78/10
Filed: 1972-05-09
Abstract: 1379505 Haymaking machines W REBER 9 May 1972 [14 May 1971 3 Aug 1971 23 Nov 1971] 21552/72 Heading A1F Each rotary rake head of a hay making machine has a plurality of radial arms 2 carrying tines 1 which can be moved between a tedding position (Fig. 1) and a windrowing position (Fig. 2) in which the tines 1 are inclined rearwardly with respect to the direction of rotation and the diameter of the circular trajectory of the tines 1 is reduced. The arms 2 may be moved by rotation about respective axes, or by transposition to an alternative fixing point on the associated hub 4 or each arm may comprise a four point linkage whose geometry is altered to move the arm in to either one of the two positions. In a first embodiment (Figs. 1 and 2) the arms 2 are rotatably mounted in the associated hub 4 and are rotated about associated axes X-Y, between the tedding and windrowing positions either individually when a respective spring biased locking piece 3 is released (Figs. 5 and 6 not shown) or simultaneously by means of a bevel gear located in the hub 4 (Fig. 14 not shown). The arms 2 are articulated about a spindle 9 (Fig. 9) and the outer parts of the arms are biased by respective springs 10 so that in the tedding position the forks cannot be deflected contrary to the direction of rotation due to the abutment 13 whilst when windrowing (Figs. 11 and 12) the forks can yield upwards about the spindles 9 when encountering ground obstacles. This mounting also permits the tools to be retracted to reduce the effective width and increase ground clearance of the machine during transportation. The springs may have guards (Fig. 12 not shown) to prevent entanglement with the crop or they may be partially mounted inside the arm 2. The axis of rotation V-W of the rake heads is adjusted to accommodate the selected operative position by a peg 20 which locks bar 21 in either aperture 22 or 23 in the chassis plate 24. In a second embodiment (Figs. 16-23 not shown) the two operative positions are attained by means of two alternative fixing points on the hubs 4 for each of the arms 2. In a third embodiment (Fig. 24 not shown) each arm 2 comprises a four point linkage, one of whose pivots connects the arm to the associated hub, which is locked into place by means of a diagonal cross piece. Swathe plates may be mounted on the machine which are upwardly pivotable into a transport position.
Patent GB-614527-A (GB)
Title: Improvements in or relating to machines for inserting fastenings
IPC: A43D69/02
Filed: 1946-07-19
Abstract: 614,527. Nailing. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). July 19, 1946, No. 21596. [Class 89 (iii)] In a nailing machine, tack-holding jaws 30 pivoted to the throat 20 by a rounded lip 28 thereon are pressed together by an encircling coil spring 34, the lower ends of the jaws being tapered to provide a conical shape with a rounded end to engage a tackreceiving hole in a work-piece S to position it. A ring 36 holds the jaws 30 in engagement with the lip 28.
Patent GB-827071-A (GB)
Title: Improvements relating to the production and indication of modulated radiant energy
Inventor: CRAXTON ROBERT TREVOR
IPC: G08B13/183
Filed: 1955-07-26
Abstract: 827,071. Light fittings. BRITISH THOMSON-HOUSTON CO. Ltd. July 18, 1956 [July 26, 1955], No. 21610/55. Class 75(4) [Also in Group XI(b)] Device for producing rapidly interrupted light beam, comprises parabolic reflector 1 in which is mounted a slotted cylinder 2 surrounding a lamp 3 at the focus of the parabola. A motor 5 drives a slotted cylinder 4 concentric with the cylinder 2. The slots are preferably uniformly spaced around the cylinders, the width being half a slot. The device is used as a source of modulated light in conjunction with a photo-electric cell, in burglar alarms and like apparatus.
Patent GB-179473-A (GB)
Title: A method of and means for conveying metal sheets, plates, bars or other suitable material
IPC: B62B5/00
Filed: 1921-08-15
Abstract: 179,473. Pickersgill, W. J. Aug. 15, 1921. Hand-tritcks. - Wheeled supports for conveying metal sheets, bars, &c. are held together by the articles being conveyed. The normally independent supports have wheels a, Fig. 1, in forked mounts b and vertical spigots d adapted to extend through holes in the sheet or the like i. The supports may be locked to the sheets by bent spikes g unless required for steering, in which case draw-bars h may be attached. Three or more supports may be used, and instead of spigots may have clamps k, Fig. 5, engaging the edge of the sheet.
Patent GB-354971-A (GB)
Title: Improvements in and connected with shaving brushes
IPC: A46B11/00
Filed: 1930-08-18
Abstract: 354,971. Shaving-brushes. ROBERTSON, T. C., 398, Townmill Road, Glasgow. Aug. 18, 1930, No. 21630. [Class 19.] A reservoir shaving-brush has an outlet D for the shaving cream arranged in a cap A which carries the bristles and which screws into one end of a hollow handle B which serves as a reservoir and from which cream is expelled by thumb pressure on a piston C slidable in the handle B. The outlet D is arranged at the base of and outside the bristles, and is covered by an arc-shaped plate capable of slight sliding movement on the cap A to bring into and out of register with the outlet D a hole in a ball E carried by the plate to open and close the outlet.
Patent GB-759609-A (GB)
Title: Apparatus for deriving navigational data in radio beam control systems
IPC: G05D1/02
Filed: 1953-08-05
Abstract: 759,609. Electric aircraft indicators. AKTIEBOLAGET WIESING. Aug. 5, 1953 [Aug. 29, 1952], No. 21644/53. Class 40(1) [Also in Group XL(c)] In a system for enabling a pilot to make an asymptotic approach to a flight path defined by azimuth and elevation overlapping-beam equi-signal beacons, the displacement of an indicating member from a reference position is controlled by generating a first control signal comprising the algebraic sum of three signals proportional respectively to the angular displacement of the aircraft from said path, the first time derivative of said displacement and the rate of turn of the aircraft, integrating said first control signal to give a second control signal and applying to the indicator either said second control signal only, Fig. 2, or both said first and second control signals, Fig. 4 (not shown). In such a system the rate-of-turn signal is substantially proportional to the second time derivative of said displacement, the first control signal is proportoinal to errors in the rate of turn and the second control signal in proportional to heading error. As shown signals proportional to the angular displacement produced in the receiver 1 are applied to a displacement indicator 2 and to the input of a servo system 4 comprising an amplifier 3 controlling a motor 5 which automatically positions the slider of a potentiometer 7 so that the voltage between said slider and the fixed centre tap is proportional to the displacement, the input to the motor being then proportional' to the first derivative of the displacement. These two signals are applied to coils 11 and 12 to produce a torque proportional to their resultant which is balanced against the processional torque of a rate-of-turn gyro 8 whose axis 9 controls the setting of a potentiometer 10 to produce the first control signal which is applied through an amplifier 14 to energize an integrating motor 15 controlling the position of the slider of a potentiometer 16 to give the second control signal which actuates the indicator 17. Stops 18 are provided to limit the magnitude of the displayed signal. In a modification, Fig. 4 (not shown), the first and second control signals are applied to a differential indicator the relative amplitude of the two signals being adjustable. When used for azimuthal control the gyro 8 may be inclined so that its torque output is proportional to azimuth rates of turn and to the rate of change of the roll angle, the relative effect of the two components being controlled by adjusting the inclination of the gyro.
Patent GB-287773-A (GB)
Title: Improvements in tensioning devices for fencing wire
IPC: F16G11/12
Filed: 1927-08-17
Abstract: 287,773. Angel, G. Aug. 17, 1927. Wire strainers.-Fencing wires e are strained by a tool comprising a bar a through which passes a bar b having at one end a hook c by which the tool is suspended from the wire. Upon rotation of the tool the wire is coiled on to one of the limbs of the bar a and the strainer is secured by the engagement with the wire of a hook d carried by the other end of the bar b.
Patent GB-1300767-A (GB)
Title: Improvements in or relating to vehicle flashing-light installations
IPC: B60Q1/38
Filed: 1970-05-06
Abstract: 1300767 Lamp failure indicator; road traffic signals on vehicles WESTFALISCHE METALL INDUSTRIE KG HUECK & CO 6 May 1970 [8 May 1969] 21731/70 Headings G4N and G4Q In an indicator lamp system for a road vehicle, resistors R1 and R2 are switched in series with the lamps BLh in order to dim them, by means of a relay TN actuated by the main light switch LS. The relay TN actuates contacts tn1 and tn2. When the resistors R1 and R2 are in series with the lamps, loads R3 and C1, and R4 and C2 are connected in parallel with the lamps. During the time when the current passes to the lamps in a flash period, current flows through resistors R3 and R4 and is stored on capacitors C1 and C2. Thus the total current drawn by the lamp circuit is the same regardless of whether resistors R1 and R2 are connected into the circuit, provided the component values are suitably adjusted. During the time in which no current flows, i.e. between flashes the capacitor C1 discharges itself via the lamp. If a lamp failure occurs, the capacitor C1 is unable to discharge between flashes, and so is unable to carry any current during the flash. This means the current drawn from the flasher unit BG is reduced to zero and a current monitoring device (not shown) is therefore able to detect lamp failure. The diodes D1 and D2 prevent the capacitor discharging via the front lamps BLv.
Patent GB-758695-A (GB)
Title: Improvements in rack rod loading mechanism for alimentary paste extrusion apparatus
IPC: A21C11/00
Filed: 1954-07-26
Abstract: 758,695. Positive clutches. FRANCISCI. J. DE. July 26, 1954, No. 21755/54. Class 80(2) [Also in Group V] A one-revolution clutch, incorporated in mechanism forming part of a pasteextrusion machine (see Group V), comprises a member 49 to which power is applied and a member 53 which receives and transmits the power when the clutch is engaged. The member 49 is freely rotatable on a shaft 44 and the member 53 is fixed to this shaft. A key 55 is rotatable in the wall of the member 53 and projects into a space 51 within the member 49, the projecting part being of segmental cross-section and engageable with splines 52 in the wall of the member 49, Fig. 8. The key 55 is rotated into the Fig 8 position, i.e. the clutch-engaging position, by the tension of a spring 58, Fig. 5. An arm 56 projects from the outer end of the key and when this arm is held back in opposition to the spring 58, against a stop 57 on the member 53, the clutch is disengaged. In operation the arm 56 is held back by a lever when the transmission of power is not required, the key 55 then being in the rotational position where the flat face of its segment is opposite the splines and the key is not therefore engaged. The lever is tripped by appropriate timing means to allow the key to be rotated to engage the clutch.
Patent GB-659681-A (GB)
Title: Matrix drier and shrinker
IPC: B41D1/00
Filed: 1949-08-22
Abstract: 659,681. Drying matrices. BAKER, C. C. Aug. 22, 1949, No. 21760. [Class 100 (ii)] A matrix preliminary drying and shrinking cabinet 3 which effects a greater measure of shrinkage than usual, comprises a vacuum chamber 1 with a perforated surface 2 carrying the matrix 27 held by a pair of longitudinal disengageable pressure-bars 23 normally urged inwardly and which after travelling a predetermined distance cause an actuator to engage a control device 40 which switches off the cabinet heating means and stops an airexhaust mechanism connected to the chamber 1. The cabinet 3 has a hinged door 24 through which the matrices are placed on the chamber 1 situated below the heating means comprising a number of infra-red lamps 36 mounted parallel to the matrix and on a housing 48 vertically adjustable in the cabinet. An opening 12 at the base of the cabinet allows access to a pedal 29 connected to a pair of rods 30 urged upwardly by springs 32, adjustable for pressure by means of nuts 34. The upper end of each rod 30 is connected to links 28 attached at their other ends to rocker arms 13 pivotally mounted on brackets 16 fixed to the chamber 1. Each arm 13 comprises an upper tubular section containing a spring-plunger 17, the end of which carries a transverse pin 22 engaging the pressure-bars 23 which thus hold the matrix in contact with the upper surface 2 and are urged inwardly through the rocking of arms 13 by the springs 32. Attached to one arm 13 is a pointer 44, Fig. 5, extending through a slot 45 in the cabinet 3 and indicating on a scale 46 thereon the amount of the inward shrinkage movement. The amount of shrinkage is predetermined by adjusting an actuator, attached to the upper end of one of the rods 30, so that when it contacts the control switch 40 the lamps 36 are extinguished and an air-exhaust motor 8 driving a blower 4 connected to the vacuum chamber 1, is switched off. The final stage in the drying and shrinking is effected in customary moulding apparatus.
Patent GB-517190-A (GB)
Title: Improvements in or relating to servomotors
IPC: F15B9/10
Filed: 1938-07-22
Abstract: 517,190. Fluid-pressure servomotors. BOSCH GES., R. (formerly BOSCH AKT-GES., R.). July 22, 1938, No. 21762. Convention date, July 22, 1937. [Class 135] A fluid-pressure servomotor comprises a double-acting power piston 7, Fig. 1, working in a rotatable valve sleeve 5 in a fixed casing 1. The sleeve 5 has two bores 6, 6 communicating with pressure-fluid supply pipes 3, 3 and cooperating with oblique grooves 13, 13 on the surface of the piston 7 which is connected by a rod 8 to, for example, the control rod of a fuel injection pump. The grooves 13, 13 in the piston are connected by longitudinal grooves 14, 14 to the two ends of the piston respectively so that a rotary movement of the valve sleeve 5 by, for example, a governor actuating the arm 10, will supply more pressure fluid to one end of the piston and less to the other which results in a longitudinal "follow-up" movement of the piston to equalise the pressures at the two ends. Leakage bores 16 are provided in end covers 9 of the sleeve 5 to allow of, and at the same time to damp, the movement of the piston. In a modified arrangement the control sleeve 5 is omitted and parallel oblique control edges are provided at the ends of the piston member which co-operate with inlet and exhaust ports at each end in the fixed cylindrical casing, the piston member being rotated to control the supply of pressure fluid to one or other end of the piston and moving longitudinally to "follow-up." In another arrangement, Fig. 3, grooves 45a, 45b on the surface of the piston between the two working chambers are provided which are in communication with said chambers through passages 46, 47 and are controlled by longitudinal movement of a valve sleeve 33, actuated, for example, by a governor capsule B. The valve'controls the supply of pressure fluid from supply passages 43, 42, 44 to move the piston to "follow-up" the movement of the valve.
Patent GB-359435-A (GB)
Title: Improvements in or relating to methods of producing thread coils of artificial silk and in devices for carrying such methods into effect
IPC: D01D10/04
Filed: 1930-07-18
Abstract: 359,435. Adjustable bobbins. SCHOENFELD, M., 37, Utoquai, Zurich, Switzerland. July 18, 1930, No. 21782. Convention date, Jan. 6. Addition to 358,900, [Group IV]. [Class 120 (iii).] Artificial silk is wound so as to produce a plurality of cheeses adjacent one another on the outer edges of radially movable bars of a spool body, the inner edges of the bars resting on a conical mandrel which holds the bars in an outwardly displaced position against the action of a spring. The mandrel may be shaped as a truncated cone, the thinner end of which is formed with a conical point co-operating with the edge of a bore of the spool body for centring the mandrel. As shown in the drawings, radially movable bars 2 on a cylindrical spool body 1 are held together and urged towards the centre by resilient rings 3 made for example of rubber. The spool body has a bore 4 which receives a mandrel 5. The mandrel is provided at one end with a handle 6 and at the thinner end it has a conical point 7 which engages the edge of a bore 8 of the extension 1a. The inner sides of the longitudinal bars 2 are tapered in accordance with the inclination of the exterior surface of the mandrel. When the mandrel is inserted, the bars are pressed outwards. The threads are wound on the expanded winding device so that several coils W are simultaneously formed. For removal of the coils, the mandrel 5 is withdrawn, whereupon the bars 2 are moved inwards by the action of the rings 3, thus enabling the coils to be slid off. Instead of the resilient rings 3, an elastic covering 10, for example of rubber, may be employed as shown in Fig. 4. This covering completely surrounds the bars and is fastened at each end to the spool body 1 by a metal ring 11.
Patent GB-680613-A (GB)
Title: Improvements in or relating to the sulphonation of alkyl substituted aromatic compounds
IPC: C07C309/31
Filed: 1948-08-18
Abstract: Sulphonated aromatic compounds are produced by bringing sulphur trioxide vapour alone or mixed with an inert gas into contact with an aromatic hydrocarbon having an alkyl side chain, in the liquid phase, in the presence or absence of an inert organic solvent. Alternatively, the sulphur trioxide used may be freshly condensed from the vapour phase.  Preferred starting materials are alkyl benzenes and alkylsubstituted toluenes having a side chain containing from nine to sixteen carbon atoms such as the products obtained by the alkylation of benzene or toluene with trimers or tetramers of propylene.  Suitable solvents are liquid sulphur dioxide or halogenated hydrocarbons of low molecular weight such as ethylene dichloride and chloroform.  Preferably, the sulphurtrioxide should not constitute more than 30 per cent in excess of the amount theoretically required to produce the mono-sulphonic acid.  The preferred ratio for the production of the mono-sulphonic acid is between 1.0 and 1.2 mols of sulphur trioxide to each mol of aromatic hydrocarbon.  To avoid large local excesses of sulphur trioxide, the aromatic compound may be passed through an elongated reactor and sulphur trioxide introduced at several points along the line of flow, or the gaseous sulphur trioxide, mixed if desired with gaseous sulphur dioxide, may be introduced into the reaction zone as a gaseous stream directed upon the surface of the stirred liquid reactants. The reaction may be carried out at elevated pressure and the preferred temperatures are in the range - 80 DEG  to +80 DEG  C. The process may be operated continuously or otherwise.  When a p halogenated hydrocarbon is used as diluent, the crude sulphonated product may be passed to an extraction zone and washed with a mixture of methanol and water.  The solution of the sulphonic acid in aqueous methanol is separated, neutralized with soda and evaporated to dryness.  When liquid sulphur dioxide is used as diluent it may be removed by distillation before the extraction stage.  In the examples: (a) a hydrocarbon, the product of alkylation of toluene by propylene tetramer fraction is cooled and dissolved in ethylene dichloride; SO3, vaporized in a nitrogen stream is passed over the solution and the sulphonic acid formed is extracted from the mixture; (b) the hydrocarbon obtained by alkylating toluene with a propylene tetramer fraction is reacted with freshly-condensed sulphur trioxide in sulphur dioxide solution; (c) dodecylbenzene is reacted with sulphur trioxide vapour in the absence of a solvent.  Specifications 539,281 and 635,303 are referred to.
Patent GB-1394553-A (GB)
Title: Manufacture of non-woven webs containing bonded artificial  fibres
Inventor: TURUNEN O
IPC: D04H1/4258
Filed: 1973-05-08
Abstract: 1394553 Non-woven fabrics NESTE DY 8 May 1973 [9 May 1972] 21859/73 Headings D1R and D2B A web of artificial fibres is bonded by a polymeric bonding agent precipitated thereon from a dispersion or a latex thereof by means of a precipitant incorporated in the fibres. The web may be formed by dry or wet methods, and the bonding agent may be precipitated on the fibres before or after web formation. The fibres may be rayon, cellulose acetate, acrylic, modacrylic. nylon, polyester, or polyolefin fibres. The bonding agent may be precipitated from a cationic or anionic dispersion or latex utilising an anionic or cationic precipitant, respectively. Cationic dispersions or latexes include a vinyl polymer or copolymer e.g. a polyacrylate, polyvinyl acetate, polybutadiene, polyacrylonitrile, or polyvinyl chloride. Anionic dispersions or latexes include an acrylic polymer or copolymer, a styrene-butadiene copolymer, polyurethane, polyamide, chlorinated polyolefin, or polyvinyl acetate. Anionic precipitants include polymers containing carboxyl sulphonyl, sulphate, and phosphoric acid groups. Cationic precipitants include ureaformaldehyde, melamine-formaldehyde dicyandiamide-formaldehyde, or guanidineformaldehyde condensates, polytheylene imine, polyamides polyamines, polyamidoamines, and alum. Unmodified synthetic or natural fibres may also be present together with conventional additives e.g. fillers, optical brighteners, fire retardants, antioxidants, bactericides or fungicides.