Ceiling form

A support head for supporting ceiling form components, said support head being mounted upon a support defining a vertical support axis and said support head comprising:

• a generally horizontal base plate mounted on the support and centered at the support axis and having an upwardly facing top surface;
• a generally horizontal head plate located at a separation above said base plate and centered about the support axis and having a downwardly facing bottom surface of smaller size than said top surface of said base plate;
• and
• a first plate section defining a first vertical plane containing the support axis, said first plate section having a radially outer surface, an upper horizontal surface extending radially from the support axis adjacent to said bottom surface of said head plate, a diagonal surface expending from said horizontal surface radially above and radially beyond said head plate and slanting away from the support axis, and a stop surface extending vertically above said diagonal surface and slanting towards the support axis, said first plate section having a bottom surface adjacent to said top surface of said base plate to connect said base plate to said head plate, said first plate section also having a second stop arranged below a plane of said head plate and above a plane of said base plate and radially beyond said base plate near said radially outer surface of said first plate section.

A support head for supporting ceiling form components, said support head being mounted upon a support defining a vertical support axis and said support head comprising:

• a generally horizontal base plate mounted on the support and centered at the support axis and having an upwardly facing top surface;
• a generally horizontal head plate located at a separation above said base plate and centered about the support axis and having a downwardly facing bottom surface of smaller size than said top surface of said base plate;
• a first plate section defining a first vertical plane containing the support axis, said first plate section having a radially outer surface, an upper horizontal surface extending radially from the support axis adjacent to said bottom surface of said head plate, a diagonal surface extending from said horizontal surface radially above and radially beyond said head plate and slanting away from the support axis, and a stop surface extending vertically above said diagonal surface and slanting towards the support axis, said first plate section having a bottom surface adjacent to said top surface of said base plate to connect said base plate to said head plate, said first plate section also having a second stop arranged below a plane of said head plate and above a plane of said base plate and radially beyond said base plate near said radially outer surface of said first plate section, said first plate section further having a shape which is mirror symmetric with respect to a second vertical plane containing the support axis and perpendicular to said first vertical plane;
• and
• a second plate section having a shape identical to said first plate section shape, said second plate section lying in said second vertical plane,
• said support head, in plan view, having a rectangular shape with four corners, and said first plate section extending radially inwardly from one of said corners of said rectangular shape.