Improvements in Two Line Letter Knife Attachments for Linotype Machines.
Year: 1896

page_text: Date of Application, 28th Sept., 1896-Accepted, 19th Dec., 1896
COMPLETE SPECIFICATION.
Improvements in Two Line Letter Knife Attachments for Linotype
Machines.
I WATKIN WYNNE of Bon Accord Avenue Waverley, near Sydney, in the
Colony of New South Wales, Journalist, do hereby declare the nature of this
invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
This invention relates to those attachments for linotype machines which plane or
dress the linotypes or slugs as they are ejected from the mould in the casting
wheel and which consist of knives or planing edges presented to the advancing
slug as it is ejected into the "stick" and which are commonly termed knife
attachments. And this invention refers to those kinds of such attachments which
will plane or dress linotypes or slugs having two line letters protruding or
overhanging beyond their bodies.
This invention has been specially devised in order that the knife attachments will
plane or dress the full length of the linotype or slug and with but slight and facile
regulation or manipulation will likewise allow the passage of slugs having thereon
overhanging two line letters and if necessary plane or dress the edge of the
overhang parallel to the body of the slug.
These improvements in two line letter knife attachments for linotype machines
consist essentially in the peculiar construction of the knife having part of its knife
edge adapted (under the necessary regulation) to have motion transversely of the
cutting edge so that said knife edge may be continuons (when it is to plane or dress
a parallel slug) or may be non-continuous (when a slug with a overhang two line
letter is to pass) or may be non-continuous but have a subsidiary parallel cutting
edge at the gap (when a slug and its overhang two line letter has to be dressed as
it is passing onwards). And these improvements consist further in the particular
combinations and arrangements of parts hereinafter described and claimed.
But in order that this invention may be clearly understood reference will now be
made to the drawings herewith in which
Figure 1 is an internal face view of a knife attachment for a linotype machine
having these present improvements embodied therein.
Figure 2 is an edge view and Figure 3 is a perspective view of the same and
Figure 4 is a cross section of the whole through the gap knife.
In order to the better understanding of these improvements the whole knife
attachment (one side of the set) is shown but for the purposes of this specification
there is no necessity to refer to those parts in which no alteration is necessary to the
carrying out of this invention.
Transversely through the knife body A and the edge A¹ a slot or bed B is cut
or made which may have parallel sides but is preferably of dovetail shape as shown
so that there will be a gap in the cutting edge A'. In this slut or bed B exactly
fitting the same and adapted to slide to and fro therein is the "gap knife" C having
cutting edge C. This gap knife may be of any approved cross section so long as
it will slide in the bed B and its edge C¹ will fit exactly between the gap in the
edge A but it is preferably of the same cross section as the removed part of the
body A. The to and fro motion of this gap knife C will enable the edges A¹
and C¹ to be made continuous or to enable the edge A' to have the gap (through
which the overhang two line letter may pass) and to enable the edge C₁ to plane
or dress the bottom edge of an overhang two line letter.

page_text: This
The transverse to and fro motion of the "gap knife" C may be imparted to it by
many mechanisms so long as the travel and movement is under easy control and as
the best devices now known for such purpose are as follows: An eccentric D having
its tail or rod D¹ jointed to the gap knife C as at D2 is mounted upon a pivot pin or
spindle D³ held in a bracket sleeve D' bolted upon the back of the stationary knife
as shown so as to partake of the adjusting movements of such knife.
spindle D³ has ou its outer end a handle D' by which spindle D³ is revolved so as
to operate eccentric D and so advance or withdraw the gap knife C for the purposes
before mentioned. Bolted at E¹ to the sleeve bracket D is a quadrant or sector E
to which may be screwed at either end or to either of the series of holes through
an oval hole the stop pieces E2 by which the movement of the handle may be
checked according to the pre-determined adjustment of said stop pieces as will be
clearly seen and so that the scope of the movement of the gap edge C¹ may
be regulated.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
First. In two line letter knife attachments for linotype machines a planing knife
having a transversely moving or sliding part adapted to make the cutting edge
continuous or non-continuous as the case may be substantially as herein described
and explained.
Second. In two line letter knife attachments for linotype machines a stationary
planing knife having therein a transverse slot or bed adapted to receive a sliding
gap knife whose cutting edge will fill the slotted gap of the cutting edge of said
stationary knife substantially as berein described and explained.
Third. In two line letter knife attachments for linotype machines a transverse
dovetail slot across a stationary planing knife adapted to receive a dovetail sliding
gap knife substantially as herein described and explained.
Fourth. In two line letter knife attachments for linotype machines the combina-
tion and arrangement with a transverse sliding gap knife across a stationary planing
knife of devices for adjusting and controlling the movement of said sliding gap knife
substantially as herein described and explained.
Fifth. In two line letter knife attachments for linotype machines the combination
and arrangement with a stationary planing knife such as A having a cutting edge
such as A and having a slot or bed such as B leaving a gap of a gap knife such
as C having a cutting edge such as C' an eccentric such as D having tail or rod
Buch as D' and devices for controlling the move.ment of said eccentric substantially
as herein described and explained and as illustrated in the drawings.
Sixth. In two line letter knife attachments for linotype machines the combination
and arrangement with the parts set forth in the preceding (fifth) claiming clause
of the parts marked D³, D, D, E E and E2 substantially as herein described
and explained and as illustrated in the drawings.
Dated this Twenty-fourth day of August One thousand eight hundred and
W. WYNNE.
G. F. Redfern & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.