Great, thanks so much!
---- Bob Skiles <[log in to unmask]> wrote: 
> It's function/operation is well-described (and illustrated) in this 1958 
> GM patent for an "automobile heater system" :
> 
> https://www.google.com/patents/US3051393
> 
> 
> 
> On 1/23/2017 2:12 PM, Richard Wright wrote:
> > The 4 bolts indicate to me that it bolts onto a vehicle frame . The flange suggests a pipe or hose attaches and the recessed area in the top? suggests a place for a gasket. Is there a number or name anywhere? ….
> >
> > Oops - Bob got it. Similar ones can be found with a Googelsearch on “vehicle air-flow-control damper.”
> >
> > Richard Wright
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >> On Jan 23, 2017, at 11:48 AM, Sarah Heffner <[log in to unmask]> wrote:
> >>
> >> Thanks!
> >> ---- Lyle Browning <[log in to unmask]> wrote:
> >>> It has more the look of a form of stove damper mechanism.
> >>>
> >>> Lyle Browning, RPA
> >>>> On Jan 23, 2017, at 2:17 PM, Sarah Heffner <[log in to unmask]> wrote:
> >>>>
> >>>> Does anyone know what this artifact is? It was found in association with a treehouse that was likely used in the mid-1960s. I thought this might be a lantern but I have not been able to find any images of lanterns that look like this. Is it some sort of food processor? Any help with IDing is appreciated!
> >>>>
> >>>> The artifact is 5" wide at the base, 6" wide at the top, and 6" tall.
> >>>>
> >>>> Here is a link to the Dropbox folder with the pictures: https://www.dropbox.com/sh/wt25uopzl2qchp8/AADT3ge6W9AHXYah0qxZNSYea?dl=0
> >>>>
> >>>> Thanks!