Improvements in the Mould Wheel Controlling Mechanism of Linotype Machines.
Year: 1896

page_text: [Communicated from abroad by THE MERGENTHALER LINOTYPE COMPANY, of Tribune
Buildings, New York, United States of America.]
Improvements in the Mould Wheel Controlling Mechanism of
Linotype Machines.
We, THE LINOTYPE COMPANY, LIMITED, of No. 188 Fleet Street, in the City of
London, Sole Proprietors of, and Manufacturers, Vendors and Licensors under, the
"Linotype" Patents, do hereby declare the nature of this invention to be as follows:-
The present invention relates to improvements in the mould wheel controlling
mechanism of linotype machines, and the object of it is to prevent the revolving
mould wheel being carried too far forward by its momentum. It confers the
additional benefits of preventing wear of the dowel pins and holes, insuring proper
alignment of the mould, and reducing wear and noise.
It is particularly applicable to the celebrated Mergenthaler Linotype machine.
This latter is fully described in the Specification of Letters Patent 14582 1890. A
description of the combination of the present invention with that machine, will best
describe the nature of the former.
In the machine in question, the mould wheel is a wheel rotated by gearing about a
horizontal axis through portions of a revolution at a time. It is called the mould
wheel, because there is bolted to it a block containing a slot the exact size of the
body of the linotype, such slot serving as the mould of that body. These moulds are
parallel with the diameters of the wheel and are near the edge of the latter, so that
as the wheel and block together are somewhat weighty, the two combined acquire a
momentum which interferes with the proper alignment of the mould with the several
parts of the machine.
The present invention consists in the combination with the shaft through which
the mould wheel receives its motion, of a pair of clips, preferably, lined with leather
(or equivalent material in respect of its capacity for braking a rotating body), and a
binding device capable of regulating the strength of their bite upon the said shaft.
Both clips are in one piece or they may be pivotted upon each other. The two are
held in their working position by any suitable part of the frame of the existing
machine or by some suitable bracket or equivalent device.
Dated this 8th day of December 1896.
PHILLIPS & LEIGH,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Mould Wheel Controlling Mechanism of
Linotype Machines.
We, THE LINOTYPE COMPANY, LIMITED, of No. 188 Fleet Street, in the City of
London, Sole Proprietors of, and Sole Manufacturers, Vendors and Licensors under,
the "Linotype" Patents, 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:-
The present invention relates to improvements in the mould wheel controlling
mechanism of linotype machines, and the object of it is to prevent the revolving
mould wheel being carried by its momentum past the desired stopping point in its
plane of rotation. It confers also the additional benefits of preventing wear of the
inould wheel studs and sockets and of reducing the noise of the mould wheel
mechanism.
It is particularly applicable to the celebrated Mergenthaler Linotype machine, for
use in which it has been specially devised, although it is applicable to other linotype
machines having a similar mould wheel mechanism."
That machine is fully described in the Specification of Letters Patent 14582 1890.
In it, the mould wheel is a wheel rotated by gearing about a horizontal axis through
portions of a revolution at a time. It is called the mould wheel, because there is
bolted to it, a block of metal containing a slot of the size of the body of the linotype,
such slot serving as the mould for that body. The mould wheel is not a small one
and as the mould block is fixed close to its edge and parallel with a diameter of it,
the two combined acquire a momentum which interferes with the proper alignment
of the mould with the respective parts of the machine, by reason of it carrying the
wheel past the desired stopping point.
The said invention consists broadly in the combination with the shaft through
which the mould wheel receives its motion, of a pair of clips or jaws adapted to grip
the said shaft and to thereby act as a brake upon such motion, together with a binding
device adapted to regulate the strength of such grip.
Referring to the accompanying figures which are to be taken as part of this
specification and read therewith,
Figure 1 is a plan:
Figure 2, is a transverse section taken along the line 2-2 of Figure 1; and
Figure 3 is a detail side elevation of the pair of clips or jaws.
A is part of the machine frame; O is the mould wheel; o¹¹, the mould block;
03, the mould wheel bearing; o, its gear teeth; o, a driving pinion engaging therewith;
and o7, the shaft on which said pinion is fast. This shaft o' receives its motion from
a constantly rotating wheel oº. It has already been pointed out that in the Linotype
machine, the motion of the mould wheel O is required to be intermittent. To meet
this requisition, the said wheel o° consists of suitable arcs of gearing and arcual
delay surfaces. 08 is a pinion intermittently driven by the wheel oº. P is an abutment
adapted to support in position, the composed line of matrices and space bars, during
the act of casting; p27, p27 are two studs projecting rearwardly from the frame of the
vice in which the above mentioned composed line is gripped; and p28, p2s are the
sockets on the mould wheel O in which the said studs engage to hold it stationary
in either of its operative positions. The foregoing parts are as heretofore.
0121 is a spur wheel fast on the same shaft as the pinion 08. This shaft is carried
in suitable bearings projecting from the frame A. 0122 is a pinion fast on the shaft o
and driven by the spur wheel 0121. 0123 is a short rod supported by a pair of
brackets 012, 124, the latter projecting from the frame A in a position parallel with
he shaft o7. 125, 0125 are the pair of clips. They are shewn as incorporated together

page_text: in one piece at their bases, so providing a solid boss which is bored out in a line
parallel with the operative faces of the clips themselves to receive the rod o¹³, the
latter thereby acting as their support.
0120 is a lining attached to the above mentioned faces of the clips. The object of it
is to increase the capacity of the latter for braking the rotating shaft o'. It may be
of any suitable material, such as leather cut so as to present its grain endwise to the
said shaft, or indiarubber. It is preferred that such a lining as the one just described
should be combined with the clips, but it is not regarded as essential to the invention,
but very desirable, because it increases the utility of it.
The invention includes the combination with the pair of clips, of a binding device
capable of regulating the strength of their grip upon the shaft in question. The one
illustrated consists of a headed screw o127 passed through the end of one clip prolonged
so as to form a socket for its neck and a bearing for its head, and entered into the
end of the other clip which is likewise prolonged and also bored and screw threaded
to receive and engage the screw threaded end of the screw. When the clips are
incorporated at their base in the manner illustrated, they are made long enough
to possess as much adjustability towards each other as may be required. It is,
however, a matter of indifference whether they are incorporated at their base, or
whether they are separate from each other and held together by a pivotal or other
connection.
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
1. The combination with the shaft of the mould wheel of a linotype machine, of a
pair of jaws or clips and a binding device, as and for the purpose set forth.
2. The combination with the shaft of the mould wheel of a linotype machine, of a
pair of jaws or clips, a binding device, and means for holding the said jaws or clips
to the frame of the machine, as and for the purpose set forth.
Dated this 27th da..
1007
PHILLIPS & LEIGH,
No. 22 Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.