Abstract:
A novel apparatus is provided for riveting belt fasteners to belts wherein a plurality of rivet assemblies are driven simultaneously while aligned and guided by elongated bores of a guide block assembly. An impact distributing driver is employed to transmit impact force from a single hammer simultaneously to a plurality of rivet assemblies held in a guide block above a belt fastener. In the preferred embodiment, all of the rivet assemblies for a particular belt fastener may be driven simultaneously. The preferred driver comprises a metal cap with a plurality of elongated metal drive rods extending downwardly therefrom to be received within the bores of the guide block assembly. The drive rods are cushioned against fracturing at their upper connections to the cap by an elastomeric cushioning material, which is preferably a polymeric plug secured in a recess in the cap. Preferably, the drive rods have upper ends force fitted into bores in the metal cap with the plug surrounding all of the drive rods and allowing the upper ends of the drive rods to flex without fracturing when non-coaxial loads are applied to the driver. The plug is precast and is force-fitted into the recess and into tight engagement with the upper ends of the drive rods.
Abstract:
A belt fastener of the type formed from a blank of metal having substantially uniform thickness by a progressive die arrangement. The fastener includes a generally flat upper plate, a generally flat lower plate, strap means joining the plates and an abutment finger extending from one of the plates for limiting insertion of a belt segment moved between the plates. The finger is offset with respect to the strap means and has a thickness less than that of the blank. The finger is engageable with the strap means of another belt fastener which other fastener functions to hold an adjacent belt segment.
Abstract:
Disclosed is an integral one piece plastic fastener for securing belt ends together. The fastener has upper and lower plastic plates clasped to a belt end with integral, hollow rivets projecting from the upper plate through openings in the bottom plate and with hollowed ends of the rivets deformed to form rivet heads for maintaining clasping of the plastic plates on the belt end. Also disclosed is a rivet head forming tool which smoothly forms rivet heads by a spinning process in which a rotating tool is forced against the hollow end of the rivet and spun with sufficient velocity and applied with a high force to create a sufficient heat and pressure to cause the end wall of the rivet to curl and turn over radially outwardly to form a rivet head tightly pushing against the lower plate of the fastener.
Abstract:
A belt fastener of the type formed from a blank of metal having substantially uniform thickness by a progressive die arrangement. The fastener includes a generally flat upper plate, a generally flat lower plate, strap means joining the plates and an abutment finger extending from one of the plates for limiting insertion of a belt segment moved between the plates. The finger is offset with respect to the strap means and has a thickness less than that of the blank. The finger is engageable with the strap means of another belt fastener which other fastener functions to hold an adjacent belt segment.
Abstract:
A safety strip for shielding and covering the pointed ends of generally triangular shaped hooks of a longitudinal wire hook fastner strip is described, the safety strip including a cover and flexible detent means for detenting engagement with the wire hook fastener strip.
Abstract:
A splice assembly is provided for connecting together a pair of belt ends by a plurality of short lengths of cable in a manner which allows for troughing of the belt across its width at the connected belt ends. The lengths of cable engage at one of their ends to a first belt end, and engage at their other end to a second belt end, whereby the cables bear a tensile load along their axis. Belt fasteners having slots for engageably receiving the ends of the cables are affixed to both of the first and second belt ends to be joined along the entire width of the belt ends. There is a small gap between adjacent belt fasteners which allows for flexion of the belt thereat to allow for the aforementioned troughing of the belt. In accordance with one aspect of the invention, the cable ends engage with respective belt fasteners in a manner which prevents movement of the cable ends relative to the belt fasteners during operation of the belt. A cable splice is provided in which a support slab, which protects the cables against abrasion or being snagged and which also maintains a plurality of cables in spaced, generally parallel relation to allow a group of cables to be picked up together and inserted into slots in the belt fasteners together. The opposite ends of the support slab, from which the ends of the cables protrude, are shaped and positioned such as being curved inwardly to accommodate the leading end of the belt fasteners at which the cable engages therewith, to shield this region from particulate sifting. The slots in the belt fasteners are preferably positioned on the underside of the belt fasteners to further minimize particulate sifting.
Abstract:
A belt fastener apparatus and comb assembly is mounted and operable on a frame. The fastener apparatus is particularly applicable to wire loop-type fasteners and includes a locating pin to positively locate the punch and anvil arrangement to inhibit indexing the fastener apparatus prior to punch withdrawal from the comb bed and to provide independently operable punches which sequentially final-clinch a fastener and initially drive staples therethrough to reduce the work load on the fastener apparatus and operation.
Abstract:
A fastener and fastener assembly for coupling the ends of a conveyor belt to form a continuous belt where the preferred embodiment is a belt fastener having an upper and lower arm connected by a loop, and having a belt stop positioned to limit insertion of a conveyor belt end. The assembly utilizes a first and second set of fasteners mounted on opposite belt ends which intermesh to define a hinge passage for a hinge pin to couple the belt ends together. The reach-back of the belt ends into the belt fasteners is maximized as the belt stops are aligned with their belt loops and positioned to abut the belt end at a location where the exterior surface of a belt loop of the opposite belt fasteners is engaging or nearly engaging the belt end.
Abstract:
A fastener having pointed ends for penetrating a belt. The preferred fastener is a wire hook fastener for joining the ends of belting and it is formed with pointed wedge-shaped ends defined by inclined top surfaces and flat bottom surfaces and inwardly inclined sidewalls extending between the top and bottom surfaces. The pointed wedge-shaped ends penetrate the belting and in a plane which coincides with the surface of the belting to limit deflection to form a uniform and strong joint between the wire hook fastener and the belting.
Abstract:
A rivet collating system is provided that includes a rivet holder for supporting rivets in a predetermined pattern. In one form, the rivet holder includes a unitary plate in which apertures are configured for supporting the rivets depending therefrom. In another form, the collating system includes a plate body and drive heads that are integrally connected via frangible portions to the plate body. Preferably, retaining webs are provided about the apertures to releasably hold the rivet heads therein. The drive heads are driven downward to sever the frangible portions with the webs flexing to release the rivet heads so that the rivets can be received in bores of a guide block of a belt fastener installation tool. A method of manufacture of the rivet holders is also disclosed.