AN IMPROVED CONSTRUCTION OF TOOL HOLDER FOR SLOTTING MACHINES AND SIMILAR PURPOSES
Year: 1884

page_text: We, CHARLES JOHN GALLOWAY and JOHN BURTON, both of Knott Mill Iron
Works, Manchester in the county of Lancaster, Engineers, do hereby declare the
nature of our invention for "AN IMPROVED CONSTRUCTION OF TOOL HOLDER FOR
SLOTTING MACHINES AND SIMILAR PURPOSES" to be as follows:--
Our invention relates to an improved construction of tool holder adapted to hold
abrasive tools, consisting of short lengths of steel bar, the obliquely cut end of
which forms the cutting edge.
For this purpose, we form the tool holder with a longitudinal bore, extending
from end to end.
In the upper or rear end of the bore we form a screw thread, into which is fitted
a screw-spindle, the lower or front end of which extends to the upper or rear end
of the tool, which is fitted to slide in second bore formed at an inclination to the
first named bore, so that when the screw spindle is advanced, it pushes the tool
forward in the inclined bore. The part of the lower or front end of the tool holder
situated between the straight and inclined bores is formed as a loose piece or plug
and a tapering screw is made to screw partly into this loose piece and partly into
the tool holder so that when the tool has been set to the required position by the
screw spindle it is secured by screwing in the taper screw, which causes the plug to
nip the tool in its bore.
_1004
ABEL & IMRAY,
Agents for the Applicants,
28, Southampton Buildings,
London, W.C.

page_text: We CHARLES JOHN GALLOWAY and JOHN BURTON, both of Knott Mill Iron
Works Manchester in the County, of Lancaster, Engineers, do hereby declare the
nature of our invention for "AN IMPROVED CONSTRUCTION OF TOOL HOLDER FOR
SLOTTING MACHINES AND SIMILAR PURPOSES" to be as follows:-
Our invention relates to an improved construction of tool holder adapted to hold
abrasive tools, consisting of short lengths of steel bar, the obliquely cut end of
which forms the cutting edge.
For this purpose we make the tool holder as we will describe referring to the
accompanying drawings, Fig. 1 being a longitudinal section, Fig. 2 a side view,
Fig. 3 an end view and Fig. 4 a transverse section at X close to the end from which
the tool projects. The holder A is bored longitudinally along its whole length, and
is fitted at the one end with a screw spindle B. From the other end the holder i3
bored up a certain distance at an inclination to the former bore, and in this inclined
bore the tool C is fitted to slide. In the front part of the holder, under the tool, is
fitted a plug D, and a tapering screw E is made to screw partly into this plug and
partly into the holder A.
By means of the screw B, the end of which bears against the tool C, the tool is
adjusted to the required extent of projection, and then, by screwing in the taper
screw E, the plug D is made to clamp the tool, so as to hold it firmly in position.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is
"
:
The herein described construction of tool holder for slotting machines and similar
purposes.