"Adam R. Maxwell"  wrote:

 > Isn't the hacksaw actually a coping saw? I thought I'd seen a patent
 > for one like that, where the chain is to keep the blade from twisting.

It looks like the Fenner Hand Scroll-Saw shown in an ad on pg 140 of 
Erv's Hand-Saw Makers of North America.

Or here's a link to the same ad from google books:

http://books.google.com/books?id=fXXmAAAAMAAJ&pg=PA236&lpg=PA236&dq=fen
ner+hand+scroll-saw&source=bl&ots=WosbZx1Iu_&sig=LgKVnS-AnfjEwUP3hyP1S9WUX10&hl=
en&sa=X&ei=7FIgVOjSBNGbyATvi4KwDA&ved=0CCAQ6AEwAA#v=onepage&q=fenner%20hand
%20scroll-saw&f=false">http://books.google.com/books?id=fXXmAAAAMAAJ&pg=PA236&lp
g=PA236&dq=fenner+hand+scroll-saw&source=bl&ots=WosbZx1Iu_&sig=LgKVnS-AnfjEwUP3h
yP1S9WUX10&hl=en&sa=X&ei=7FIgVOjSBNGbyATvi4KwDA&ved=0CCAQ6AEwAA#v=onepage&q=fenn
er%20hand%20scroll-saw&f=false


Greg
FOYBPHSO
Fishers, IN