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

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883), as required
by the decision of the Comptroller General of the 21st day of July 1897.
Date of Application, 28th July, 1896-Accepted, 29th Aug., 1896
COMPLETE SPECIFICATION (AMENDED).
Improvements in Two Line Letter Knife Attachments for Linotype
Machines.
I, PHILIP THOMAS BALLS, of 197 Collins Street, Melbourne, in the Colony of
Victoria, Australia Linotype Expert, do hereby declare the nature of this invention
and the manner in which the same is to be used to be particularly described and
ascertained in and by the following statement:-
My invention relates to improvements in two line letter knife attachments for
linotype machines and more particularly to the method or means by which the gap
in one of the two knives is established.
Referring to the accompanying figures which are to be taken as part of the
specification and read therewith:--
Figure 1 shows part of a knife attachment provided with my invention with the
knives in side elevation, in closed position.
Figure 2 shows a plain view looking down upon the knife edges, with the knife
closed in firm lines, and extended in dotted lines, showing also two positions of the
lever which operates the knife.
Figure 3 is a perspective view showing the parts in Figure 2 in reverse
position.
Figure 4 is a sectional elevation on the line 6-6 in Figure 2.
Figure 5 is a perspective view of the sliding portion of the knife showing its under
side.
As a straight knife, as shown by firm lines in Figure 1, the knife shown will plane
ordinary linotype slugs along their whole length, whilst as extended or divided as
clearly shown in Figure 3 the said knife will allow one or more 2 line letters to pass
through, so that in every case the slug is planed perfectly.
In the drawing A is the stationary part of my knife and B the adjustable part
each part carrying a single cutting edge, A¹ and B' respectively.
The knife edge A¹ on A is so placed as not to trim the initial end of lines, and
thus corresponds with the knife edge on the lower part of the ordinary two line letter
knife attachments. . C is a fixed holding down plate fitting in a groove D in part B
and screwed or secured to the base (which is in practice usually integral with the
body part of A) the screws or. fastenings passing through slots E in B, which
cannot move except longitudinally. F is a lever, the handle of which is accessible to
the operator of the machine, said lever being pivoted at G and having a broad portion
provided with a series of holes, or recesses H either one of which may engage a catch
or projection I on a spring plate J so as to hold the lever F (and consequently the

page_text: part B with edge B') firmly in one or other of the positions predetermined by the
operator.
The spring plate is fixed immovably at one end to the frame or attachment as by
a screw K. The pin L projecting from the back side of part B falls within the
slot M in the head of the lever F, a channel N being made in the back of the
parts A, B or in the attachment to leave room for the lever to act.
To guide the part B in its longitudinal movement it is provided with a ribbed or
other base O which fits into the groove P in the fixed part A. When the blade B¹
abuts against blade A' then the blade B will trim the initial ends of the ordinary
linotype slugs which pass through.
The lines Q and R in Figures 1 and 2 show the extended and closed positions
respectively of the edge of the adjustable part B, and the space and depression
between the blades when extended is to allow the two line letter. or letters on
the slug to pass through; the usual auxiliary knife S being retained to trim
the two line letters. T is a two line knife liner as used in the ordinary two
line letter attachment and this may be always used with my invention without
alteration.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:
1. In a 2 line letter knife attachment for linotype machines, a stationary part A
having a single knife edge A¹ adapted to trim the slugs for part of their length only,
and having a longitudinal recess P for receiving a slidable blade B substantially as
set forth.
2. In a 2 line letter knife attachment for linotype machines, the combination of
the stationary knife edge A¹ upon A with the movable knife edge B' upon blade B
which is longitudinally slidable to a predetermined position either abutting against
or apart from A substantially as described.
3. In a 2 line letter knife attachment for linotype machines a longitudinally
movable blade B having knife edge B¹, a ribbed or other base O, slots E, and recess D
substantially as described.
4. In a 2 line letter knife attachment for linotype machines a longitudinally
movable blade B having knife edge B, recess N, and projection L substantially as
described.
5. In a 2 line letter knife attachment for linotype machines the combination of a
stationary part A recessed at P, a slidable part B, having base O recess D and slots E,
and a fixed holding plate C fitting into recess D and secured to A substantially as
described.
6. In a 2 line letter knife attachment for linotype machines having a stationary
and a movable blade, a lever pivoted to a stationary part of the attachment and
having its end in engagement with the movable blade, for the adjustment of
the latter in or out of contact with the stationary blade substantially as described.
7. In a 2 line letter knife attachment for linotype machines a lever F, having a
pivot G, and holes or recesses H, in combination with projection I adapted to enter
one or other of said holes and retain the lever in a predetermined position substantially
as described.
8. In a 2 line letter knife attachment for linotype machines a spring plate J
having one end secured or screwed to the attachment and having at its other end a
lever retaining catch I substantially as described.
9. In a 2 line letter knife attachment for linotype machines a lever F having a
pivot G and a slot M engaging a pin L in a movable blade B substantially as
described.
10. In a 2 line letter knife attachment for linotype machines the combination of
stationary part A, the movable blade B, the slot N at the back of A and B, the lever F
working in slot N and- having slot M engaging projection L in B, and the lever
retaining device I, H substantially as described.

page_text: 11. In a 2 line letter knife attachment for linotype machines the general arrange-
ment and combination of parts for forming continuous or divided knife edges A¹ B¹
substantially as and for the purposes set forth.
Dated this 28th day of July 1896
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.