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Metalmaster/Impetus Sales Brochure
The Metalmaster/Impetus was a general purpose combination metalworking tool designed and built by W. D. Urwick, the owner of a small foundry, in the early 1950s to exploit his patent triangular gib key and included many unique and innovative ideas, all aimed at getting maximum versatility and accuracy out of a small, affordable machine tool. Note the logo - a sketch of the Patent Triangular Gib Key:-
Pictures and text from the original promotional
brochure but please note that the radial drill was not fitted on
the production models and the name was later changed to
Metalmaster.
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TURNING
In addition to normal turning the removal of the radial gib key (Brit.
Pat. No. 696773) locating the bed enables the latter to be set-over
for taper turning and reclamped solidly at the required angle.
DIVIDING
The main driving pulley has 60 equally spaced and numbered holes.
Any of these holes can be picked up and the mandrel locked by
means of a link rod. The link rod itself has six divisions, thus
giving a range through 360 degrees.
KEYWAY CUTTING
For this purpose a hand lever can easily be attached for racking
the saddle along the bed. The leadscrew nut can be released,
giving the saddle a free sliding action.
BORING
A small boring head with radial feed, operated by star wheel and
trip pin, is supplied, thus at once converting the machine into a
miniature horizontal borer.
MILLING
With a crossfeed of 7" and the 10" x 4 1/2"
slotted table, quite large workpieces can be milled. A
machine vice mounted on the table enables end mills, slitting
saws and cutters to be used for a variety of work,
GEAR CUTTING
If a dividing head is available, gears of 18 D.P. upwards can
readily be cut on blanks up to 5" diameter.
TOPSLIDE
The machine is supplied with a four-way tool post. A small
topslide is, however, available, and is intended mainly for
turning short tapers and screwcutting.
TAILSTOCK
The tailstock is provided with rack feed to the barrel and has a
graduated dial. The barrel is locked by means of a radial gib key
as used on the main column.
LARGE WORK
With the Tee bed in position work up to 8" diameter can be
handled. With the tailstock and Tee bed removed, work up to 14"
diameter can be swung, the toolpost being suitably blocked up
from the cross-slide.