I figured it was Paul Bunyan's fly. <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt="

">
From the link below:
>>Finding the best splice for your light-duty conveyor
The mechanical fastener option
...One method of connecting belt ends is mechanical fasteners. With this method, a row of fasteners is physically attached to each belt end. These fasteners then are meshed together and connected with a hinge pin.
Various types of mechanical fasteners are available, but all are designed for quick repair. The splices are easy to install, requiring only basic mechanical skills. Wear on the splice is visually apparent, allowing you to complete the repair during scheduled downtime.
Light-duty mechanical splices are hinged and therefore separable. This allows you to install or replace the belt without having to disassemble the conveyor system or remove the belt from the conveyor structure. To clean the belt, you remove the hinge pin and pull the belt ends apart.
Hinged-plate fasteners are suited for belt thicknesses from 1/16 to 1/4 in. (1.5 to 6.4 mm) and pulley diameters as small as 2 in. (50 mm).
Stamped metal tooth fasteners often are a suitable choice for low-volume users who want a low-profile, hinged mechanical splice with no investment in installation tooling (see Figure 6).<<<