Abstract: A sign for indicating that assistance is required by a person in a vehicle. The sign has a body attachable to the exterior of the vehicle by a person inside the vehicle. The sign body contains an electric light connected by electrical wiring to an electrical plug insertable into an electrical socket in the vehicle. The electrical wiring includes an electrical flasher connected thereto, and the sign body has a message thereon. When the plug is inserted into the socket and the sign body is attached to the exterior of the vehicle, the light within the sign body flashes to cause the message to be readily visible to passers-by.

Abstract: Apparatus for the fastening together of two or more sheets of material by means of an integral fastener consists of a longitudinally-movable pierce and extrusion punch, a cooperating longitudinally-movable pierce and curl die, and a segmented extrusion die surround the pierce and curl die. The pierce and extrusion punch and the pierce and curl die cooperate to pierce a hole through the sheets, and the punch and the segmented extrusion die then cooperate to push the material of one sheet through the other to form two coaxial tubes; thereafter the pierce and curl die curls the pushed-through material of the coaxial tubes back to effect the fastening, the apparatus providing a stationary anvil to cooperate with the pierce and curl die. The punch and the curl die are engaged by the ends of respective pivoted levers by which they are moved, and other ends of the levers being connected together; the ratio provided by the two levers differs so that the punch moves further and faster than the curl die.