RARE Vintage NELLIE SARGENT JOHNSON Weaving Loom TENSION BOX ? See Below

Description

Rare
NELLIE SARGENT JOHNSON
Weaving Loom Attachment
I think it is a " TENSION BOX " but hopefully
you can tell for sure....It comes as shown, not sure if it
is complete or not. I haven't been able to find another
online to compare it to
I tried to get all angels for you to see
It does have wear and needs alittle cleaning from being stored
I see some fabric? on some of the ends near the sticks but I didn't want to
turn or remove anything
It does have a patent number but the numbers are 'blurred' so can't make them out
PLEASE SEE PICTURES