Tuesday, June 27, 2017

Sea Me Now: Treatment of a Pair of Deep Sea Diving Boots

These deep sea diver’s boots were made in the 1920s by Siebe Gorman, a company originally based in London, England. They are made with a thick leather boot anchored by a heavy brass sole each weighing 8.2kg (18 lbs). The strap over the vamp is 4cm wide (1 ½”) with 2 narrower straps, 2cm wide (3/4”), that wrap around the ankle and top edge. All components are secured with copper rivets which were covered with waxy green residue.

This residue is caused by fatty acids in the leather and the oil of a leather dressing applied by the previous owner reacting with the copper rivets and creating a metal soap. If left in place, this corrosion byproduct expands, damaging the leather and obscuring the rivets.

The treatment involved removing this residue from the surface of the rivets and the leather. Since copper is easily scratched it was decided to limit the tools for mechanical cleaning to wooden picks and soft micro brushes. The other consideration was to prevent the residue from becoming embedded in the leather so a short length of polyethylene surgical tubing was fitted into the terminal end of a micro nozzle attached to a low suction vacuum. The technique used required some ambidexterity as the cleaning was done with one hand while the other hand held the vacuum nozzle close to the work surface. After the residue was removed the rivets were cleaned with an organic solvent.

This treatment does not stop of development of metal soaps but removing it makes it easier to spot future accumulations. A half pair of the diving boots is now on display in the What’s Their Line? section of the All About Shoes exhibition on the lower level of the museum.

Tuesday, June 13, 2017

In Need of Some Polish: Conservation of a Late 19th C Shoe Polish Box

Sometimes when a museum curator is planning an exhibition, they discover that there are artifacts needed to tell a story that are not yet part of the overall collection. This box was acquired by the BSM for just such a reason.  It was purchased, along with its accompanying glass bottle containing remnants of black shoe polish, for our exhibition Fashion Victims: The Pleasures & Perils of Dress in the 19th Century.

As you can see from the photographs taken at the time of acquisition, the box was in poor condition. The paper wrapping covering the cardstock form was very dirty and had many losses. The corners of the box were torn and misshapen making it structurally unsound for display.

The paper was cleaned with cosmetic sponges and vinyl erasers to remove surface dirt. The box and its lid were gently humidified to reshape the distorted sides back into the intended shape. Holes in the torn paper wrapping were filled with a Kozo paper of similar weight. Kozo is made from the inner bark of the mulberry bush. The paper fills and torn corners were glued with wheat starch paste.

One side of the lid was missing some of its descriptive text. The gold ink drop shadow letters were recreated by photocopying an ‘R’, ‘H’, ‘E’ and ‘S’, cutting them around them with a scalpel, then gluing them on to the Kozo paper patch.

The box and bottle of shoe polish will be on display until the exhibition closes in April 2018.