Pam,
I have a Whippet sewing machine and I would like to tell you what I know. My Whippet is very nearly identical to yours, but yours has different decals, the motor and motor mount are a bit different and yours seems to be a bit shorter(left to right). Your Whippet, being slightly smaller, should make it lighter and nicer to move about. Not bad at all. I hope you like it. Not everone gets to have a Whippet!
On the web, I found an old newspaper AD from 1932 saying that Gimbels Dept Store had Whippet Electric Sewing Machines on sale! A sewing machine expert on Treadleon.com said that my Whippet is a model R New Home, but made by the Free Sewing Machine co. No part numbers are on it anywhere, but the serial number is under the front slide plate and has an R preceding the number itself. She said that makes it a New Home model R. The motor was made by Westinghouse and it all works. By the way, mine uses a 20x1 needle, but if you insert a 15x1 (available anyware today) in all the and then pull it down an 1/8" or so, it will sew with the modern 15x1 needles. The expert said that some Whippets use a 15x1 needle, so you my not have to fool with the obsolete 20x1 needle problem.
Your Whippet looks to me like the motor drive is by rubber friction wheel, while mine uses a belt. I guess they changed the hand wheel a bit too. The motor mount on mine has no provision to adjust the belt tension, so your machine is probably superior that way. I hope you enjoy your Whippet!!
Robert