Abstract: A system may be used with a pottery wheel to facilitate the shaping of a workpiece. The system may have a support assembly coupled to a rotatable wheel of the pottery wheel, and a template holder that holds a template relative to the wheel. The support assembly may have a rotary coupling to which the template holder is coupled; thus, the template holder may be used to keep the template stationary as the wheel, workpiece, and support assembly rotate. The template may be used for jiggering and/or jollying, and may have a plate with a shaping surface that contacts the workpiece during relative rotation to provide the desired contour. The template may have a plate that is insertable into a slot of the template; the template may be retained by the template holder at multiple displacements from the rotatable wheel.

Abstract: A slidable trailer hitch apparatus comprises a trailer hitch head operable to receive a cooperating portion of a trailer, the trailer hitch head adapted to be slidable and rotatable relative to the vehicle about an axis of rotation, first and second parallel spaced part guides fixedly located relative to the vehicle, and a body affixed to and rotatable with the trailer hitch head, the body having a center of rotation about the axis and a distal surface adapted to engage either of the first or second guides when the body is rotated relative to the first and second guides. The engagement of the distal surface upon either of the first or second guides displaces the center of the body and the trailer hitch head parallel to the first or second guide when the trailer hitch head is rotated relative to the first and second guides.

Abstract: A slidable trailer hitch apparatus comprises a trailer hitch head operable to receive a cooperating portion of a trailer, the trailer hitch head adapted to be slidable and rotatable relative to the vehicle about an axis of rotation, first and second parallel spaced part guides fixedly located relative to the vehicle, and a body affixed to and rotatable with the trailer hitch head, the body having a center of rotation about the axis and a distal surface adapted to engage either of the first or second guides when the body is rotated relative to the first and second guides. The engagement of the distal surface upon either of the first or second guides displaces the center of the body and the trailer hitch head parallel to the first or second guide when the trailer hitch head is rotated relative to the first and second guides.

Abstract: An apparatus for attaching a hitch to a vehicle is provided. The apparatus includes a pin rotatably mountable to the hitch and having a handle for rotating the pin. A receptacle formed in the vehicle receives the pin. A locking site defined by a channel is formed in one of the pin and the receptacle. The channel extends about a longitudinal axis of the one of the pin and the receptacle. A bypass portion intersects the channel and extends longitudinally from the channel to an end of the one of the pin and the receptacle. A protrusion is formed on the other of the receptacle and the pin. The bypass portion permits insertion of the pin into the receptacle to align the locking site and the protrusion such that rotation of the pin lockably engages the protrusion in the locking site to attach the hitch to the vehicle.