POSSIBLE ID at bottom of post...
I see a lot of different companies made the same style and a lot that didn't put their name on it. Here is another lock with the STAFFORDSHIRE KNOT emblem but also has a company name, HOLDFAST. The source offered no info...
http://i.ebayimg.com/00/s/MTIwMFgxNjAw/z/x4sAAOxybi9ReDku/$%28KGrHqZ,!mIFBD6TbvzeBReDkuO8tw~~60_35.JPG
Here is an ad for
HOLDFAST brand locks and shows the STAFFORDSHIRE KNOT on them. There is also a name
W. M. PINSON.
http://www.lockcollectors.eu/gazetteer/museum_locks_gazetteer_image62x.jpg
SOURCE
Another one with the knot and a different company....
http://i.ebayimg.com/00/s/MTEzMFgxMTMw/z/C4kAAOxyUrZS6Uyy/$_57.JPG
SOURCE
http://i.ebayimg.com/00/s/MTIwOVgxNjAw/z/bQoAAOxy63FS7QjU/$_57.JPG
http://www.antiquesnavigator.com/ebay/images/2013/261238352838.jpg
SOURCE This padlock ended up on Ebay as well
HERE and in the listing states....
"This padlock has the staffordshire 'knot' emblem stamp that is a sign of quality".
http://i.ebayimg.com/t/antique-victorian-hand-made-british-make-secure-brass-collectable-padlock-key-/00/s/MTYwMFgxNDY3/z/d2sAAOxyONBSZBwQ/$%28KGrHqNHJFQFI%2BjsQwdyBSZBwPY21!~~60_35.JPG
SOURCE This listing sates...
"The staffordshire 'knot' emblem is stamped on this lock which is a sign of quality and often seen on salter's scale's etc".
THOMAS MORGAN AND SONS LTD. REGENT STREET, WILLENHALL
Started in 1825, to manufacture handmade, all brass, padlocks. These were sold under the "WARRANTED SECURE" and the "STAFFORDSHIRE KNOT" trade marks, later changed to "BULLDOG BRAND".
Jack Morgan, who ran the business in the 1970s, was the third generation of the Morgan family to run the company. He was born in 1916 in the house in Regent Street from where the family ran the business. At its peak they employed 10 people.
In 1983 the Thomas Morgan business was sold by its proprietor, Jack Morgan, to Richard Morton of W. J. Goodwin (q.v.), who set up his son, Gary Morton, and his cousin, Peter, to manufacture the Morgan range of padlocks in the original Goodwin works at Wolverhampton Road, Walsall.
In 1985 they started to manufacture traditional mortice locks under the Bulldog trade name and added cylinder operated mortice locks and rim cylinder night latches, together with locking bars and hardened chain, to complement the padlocks.
Jack Morgan then set up R J Locks (q.v.) with his cousin, Ralph Jackson, in the original Regent Street premises. Jack Morgan died in 1996 and Ralph continued the business making one off special locks.
SOURCE
My opinion is that the STAFFORDSHIRE KNOT was used by multiple companies that were located in Walsall, Willenhall or Birmingham, Eng. It's possible that any England based company helped themselves to the logo. The STAFFORDSHIRE KNOT was pretty common and Staffordshire, Eng is just to the north. Many of the ads for brass locks list either Walsall or Willenhall, Eng as their address. Since multiple companies used the STAFFORDSHIRE KNOT on their locks It would be hard, if not impossible, to narrow it down to one company. The last lead I posted claims to use the STAFFORDSHIRE KNOT emblem so that is as close as I can figure out.
