Warning flag for vehicles

A signal apparatus for use in combination with a vehicle comprising:

• a base member for attachment to said vehicle, an arm member pivotally connected to said base member for movement from a position extendingly juxtaposed to said base member to a transverse position thereof and comprising a support means for a mast,
• a mast attached to said support means for extending longitudinally of said arm member,
• a signal device attached to the free end of said mast, said signal device indicating a predetermined condition by moving said mast to said transverse position,
• abutment means mounted on said arm member and spaced from a pivotal connection of said arm member to said base for supporting said mast and arm member in its transverse position,
• biasing means connected between points on said arm member and said base member for biasing said mast to said transverse position,
• means for detachably connecting and holding said mast and arm member in its storage position juxtapositioned to said base member,
• said means for detachably connecting and holding said shaft and arm member comprises a clamping means spaced from said base member for engaging said shaft adjacent said signal device,
• said clamping means comprising a U-shaped slot for receiving longitudinally thereof a part of the length of said mast,
• a latch slidably mounted on said clamping means laterally of the slot of said clamping means for releasably engaging said part of said mast, and
• attachment means forming a part of said base member which interlock with a part of said arm member when said arm member is moved to its position juxtaposed to said base member,
• said part of said base member comprising a first tab which engages with a second tab on said arm member when said arm member is juxtaposed to said base member,
• said pivotal connection of said arm member to said base member comprising a lost motion connection, and
• said second tab on said arm member slidably engaging with first tab of said base member under the effects of said biasing means when said arm member is juxtaposed to said base member.