Renseignements généraux

Nº de série

S/O

Nº de partie

2

Nombre total de parties

2

Ou

S/O

Brevets

S/O

Description générale

paper

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

61,2 cm

Largeur

S/O

Hauteur

S/O

Épaisseur

S/O

Poids

S/O

Diamètre

2,9 cm

Volume

S/O

Lexique

Groupe

Transports ferroviaires

Catégorie

Activités

Sous-catégorie

S/O

Fabricant

Ou

Union

Pays

Canada

État/province

Québec

Ville

Rock Island

Contexte

Pays

Inconnu

État/province

Inconnu

Période

New, unused

Canada

Taken from acquisition worksheet "Until the 1950s, Canadian railways relied on a fleet of over 4000 steam locomotives to move goods and people across Canada. At the heart of each of these vehicles was the boiler where steam was produced and collected before being deployed to cylinders and pistons. Boilers are subjected to a great deal of wear and tear in the course of regular operation and so were built as sturdily as possible and then regularly inspected, repaired and re-built. Railways employed a large number of boilermakers (and related tradesmen) to do this work. This stay bolt tap is an example of one of the many tools used by boilermakers to repair and re-build locomotive boilers. This tap is part of a collection of tools that CSTMC curatorial and restoration staff acquired on a trip to Glace Bay in the early 1980s. Their goal was to obtain any and all tools that they thought would be useful in maintaining the Museum’s working steam locomotives. Butterfield & Company of Rock Island, Quebec, began making metal working tools in the late 19th century. By the 1920s, the company had built a large factory that straddled the Quebec-Vermont border and produced the latest in hardened steel tools including taps and dies. At its peak, the company employed about 800 people. Purchased by Litton Industries in the late 1960s, Butterfield became a division of the Union Twist Drill Company. Litton closed the Canadian side of the business in 1982 and eventually moved all its operations to North Carolina.". "The boiler is power source for a steam-powered engine. It is a metal (iron or steel) pressure vessel that contains boiling water and its natural by-product, steam. Contained within a closed space, the steam reaches pressures of over 200 pounds per square inch (psi). This exerts a huge amount of force on the sheet metal walls of the boiler which, depending on the thickness of the plates, would eventually bulge or buckle under the pressure. To prevent this from happening, boilermakers installed stay bolts to reinforce the boiler walls. Depending on the design of the boiler and its pressure rating, the boilermaker and his team had to place stay bolts every 5 to 10 inches across the entire surface of the boiler. But first they had to drill holes in both the inside and outside walls of the boiler and thread them to take the bolts. To do the threading, they used stay bolt taps usually attached to a pneumatic motor. The tap had to be long enough to create precise and continuous threads in both the inside and outside metal sheets of the boiler. This way the stay bolt would fit perfectly in both openings and could be tightly bolted in place."

Fonction

Paper sleeve for stay-bolt tap.

Technique

Taken from acquisition worksheet "Steam locomotive boilers had to be maintained, re-built and replaced on a regular basis. To carry out this work, the railway companies employed a large number of boilermakers, fitters, apprentices and labourers. Tapping the boiler was one of their critical functions and stay bolt tapping accounted for the greatest amount of their tapping work. In the 20th century, most locomotive shops would have been equipped with air motors that workers would have used to power many of tools including the stay bolt taps.".

Notes sur la région

Inconnu

Détails

Marques

Yellow label reads "STAYBOLT TAP/ UNION TWIST DRILL CO./ BUTTERFIELD DIVISION/ Rock Island, Que./ 24 INCHES LONG/ SIZE/ 1 1[/]16/ N.S. 12". Second label is mostly illegible.

Manque

S/O

Fini

Brownish coloured paper with yellow label with black and red print. Label is split in two. Brownish coloured label with red print. Label is torn, torn part is in S.I. Paper sleeve is covered in a black oily residue.

Décoration

S/O