摘要:
Method and means for dispensing a meltable moisture curable composition from a package in which it is stored, without premature cure of the composition. The package comprises a tubular body portion closed at one end by means of a closure member, the closure member having an outlet opening and being sealingly secured to the body portion in such a manner as to leave a narrow annular space between the closure member and the tubular body portion and comprising at the other end a closure piston and a plain closure. A package is described and claimed which contains a solid meltable moisture curable adhesive composition. The rim of the piston projects towards the closure member and is in sliding sealing engagement with an inner wall of the body portion, the rim being received in the annular space between the body portion and the closure member as the piston approaches the closure member so that the container can be substantially completely emptied. Apparatus is described comprising a heated platen on which the package may be located for melting the composition adjacent the closure member, and a piston element for urging the closure piston of the package to expel melted composition through an exit port provided in the apparatus. The exit port is adapted to co-operate with the outlet of the package so as to provide a moisture proof seal between the outlet and the exit port means, and the apparatus is arranged for conducting melted composition from the exit port means to a dispenser nozzle without exposing the composition to atmosphere.
摘要:
A fastening device which is joined directly to the engine block, for example via a bar fastened to the engine block, consists of three parts, namely a) two integrated annular discs each with a respective internal ring, b) a cross-shaped holder and c) a clip securing the fuel lines. The holder with the clip fixed on it is arranged so as to be movable to a limited extent in all directions in a horizontal plane relative to the rest of the arrangement.
摘要:
Device for removably attaching insulating and sound-damping mats (7) e.g. to a car or vehicle body (6) by a nut (1) engaging a stud (8) secured to the body (6), the nut having a flange (5) to contact the mat and having flexible internal projections (9) which allow it to be pushed over the stud but which can then engage the thread of the stud so that the nut can be unscrewed from the stud when desired.
摘要:
A blind rivet assembly comprising a flanged rivet body and a mandrel having a stem provided with extension means wherein wire (3) fed to mandrel-forming means (4) is first subjected to at least one operation to form a series of indentations (9) on the surface of the feed wire (3). This may be carried out by a plurality of pairs of indenting rolls (6,6'; 7,7') arranged symmetrically around the feed wire.
摘要:
A device (10) for sucking up material removed by the bit of a portable drill is made in the form of a casing provided with means (16) for securing it to the drill and having at least one portion constituting a handle (11) to enable it to be gripped in one hand by the operator. The device (10) comprises a suction head (26) fitted slidingly on the casing to enable it to be kept close to the point of penetration into the surface of a body to be drilled by the bit fitted on the drill. Disposed inside the casing (19) of the device are a fan (13) with intake connected to said head (26) through a connecting duct (23,24) and with outlet blowing into a container (34), supported by the casing, for collecting the aspirated material, an electric motor (14) to actuate the fan (13), electric batteries (15) to supply power to the motor (14) through an operating switch (35). The casing of the drill alternatively comprises an electric socket designed to receive a corresponding plug mounted on the vacuum device (10) so as to supply power to the fan motor (14) by taking it from the power supply of the drill.
摘要:
An automatic riveting machine is disclosed which counts the rivets, as set, to control the feeding of rivets from a feeder to the rivet track or chute. The track will be resupplied after a selected number of rivets are set or sooner should the track become prematurely empty by removal of rivets from the track.
摘要:
A self-drilling and thread forming fastener for fastening a first softer workpiece, such as wood, to a second harder workpiece, such as metal, is described The fastener features wings (87, 88) of improved configuration including positive angle of attack, positive cutting edge relief angles, teardrop-like crescent shape cross section and knife-like cutting edge which exhibit faster drill times through wood.
摘要:
A modified Phillips-type screwdriver bit is disclosed that is fully compatible with a standard Phillips-head fastener, and is designed to significantly increase the level of torque that can be applied to the fastener while at the same time substantially reducing the cam-out forces normally produced by a standard Phillips screwdriver bit. These results are accomplished by forming generated surfaces along the side walls of the bit wings so that the included angle defined by the converging side walls of adjoining bit wings gradually increases from the Phillips standard 92 degrees at the base of the bit wings to approximately 105 degrees at the wing tips. This configuration serves to confine the application of torque to the side surfaces of the bit wings initially along contact lines adjacent and parallel to the roots of the bit wings with the contact area gradually progressing radially outwardly as torque levels increase and the opposing side surfaces of the recess wings in the head of the fastener begin to deform.
摘要:
A mould mechanism for a glass forming machine comprises two mould supports which have first end portions which are mounted on parallel shafts for linear movement between mould open and mould closed positions. The mould supports are moved by mould operating mechanisms which each comprise a hydraulically operated piston and cylinder device providing one of the shafts. A clamping mechanism is provided to latch the mould supports together when in mould closed position.
摘要:
Control circuit for arc welding components to workpieces, in which a component is placed on to a workpiece by a weld gun and after a welding stroke is lifted from the workpiece in a return stroke by igniting a pre-current arc and is brought up to the workpiece again in a forward stroke during the burning of an interconnected welding arc, in which a sequencing control determines the tripping moments of return stroke and forward stroke as well as of the welding arc and a monitoring voltage is bypassed from the pre-current arc ignited at the welding point, characterised in that the monitoring voltage (V) is converted into a correction voltage (line 27) by means of a set-point comparator (25) and is superposed on a control voltage (line 18) for principally controlling a high-frequency modulated switching mode power supply unit (15) and said switching mode power supply unit (15), in accordance with the thus corrected control voltage, adjusts its output current (lines 13,14) during the respective welding operation to the resistance value of the pre-current arc established by the monitoring voltage (V) representing the respective welding data.