This is the reference image he had sourced (off the internet):
The image is actually taken from (and not credited to) Anglo-Scandinavian Ironwork from Coppergate by Patrick Ottaway.
Like usual for a replica project like this one, I checked my own reference library. A second source I checked was Ironwork in Medieval Britian by Ian Goodall. Both are primary sources - as they are first generation archaeological reports. They include the original detailed scale drawings of the objects listed (but neither has photographs).
There are a couple of possible configurations of the basic 'compress a spring' mechanism in barrel padlocks. (There is an alternate construction method - the box padlock.)
These are split between cases with a hole in the end plate that use a fork, and those with a key rectangular hole in the end. An alternative is a case with a T shaped slot along the lower edge, also using a key with a shaped hole in it.
Goodall illustrates a number of barrel padlocks. However almost all are post 1100. Almost all are also of the T slot type. There is one that fits the mechanism type and date requirements : # 16 - Winchester, Hampshire, c 1100. Unfortunately the scale of the illustration (roughly 1:3) is too small to show much detail.
Ottaway reports that at Coppergate there was only one complete barrel padlock found, plus two other case fragments.
|Direct scan from Anglo-Scandinavian Ironwork from Coppergate|
First consideration for me - the customer has NOT asked for a direct reproduction / replica of this specific object. The artifact is highly ornamented - and I certainly did not quote a price for this level of decoration.
Second 'problem' is that the customer's source is * not actually an artifact *. That reference drawing is only a * diagram * - meant to illustrate the function of the lock mechanism.
What we see from the actual artifact (#3610):
case diameter = 4.5 cm / 1 3/4 inch
case length = 7 cm / 2 3/4 inch
metal thickness = 3 mm / about 1/8 inch
upper cylinder ID = 8 mm / 5/16 inch (suggests upper bar diameter at 6 mm / 1/4 inch)
Next Post : Forging materials to dimension
Regular Readers - may notice there has been a big gap in postings. Early May I attended the International Medieval Studies Conference for a week. On arriving back to Wareham, we found our satellite uplink hardware no longer receiving a signal. Through various failures, it was May 29 until internet access was restored here.