Improvements in Machines for Bevelling Stereotype and Electrotype Plates.
Year: 1889

page_text: *Improvements in Machines for Bevelling Stereotype and
Electrotype Plates.
"I JOHN MANNING of 26 and 28, Old Street, Aldersgate Street, London E.C.
Electrotyper and Stereotyper, 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 object of my improved machine is to provide means; for, fixing and securing
the stereo or electro plate to be bevelled to the travelling table of the machine, in a
more expeditious manner than has hitherto been employed; for causing the travelling
table of the machine to derive its motion, both when cutting and on the return
motion, from a screw or worm actuated by power in addition to the provision of
means for producing the same motions by hand; for, the employment of three cutters
suitably arranged so that each cutter has its own function of cutting, squaring, and
bevelling respectively to perform; and for providing such bearings that the horizontal
or other positions of the upper shaft carrying a disc to which the cutters are adapted,
and of the shaft below, supplying the power to this upper shaft, may be varied
according as circumstances may necessitate.
In machines hitherto constructed the means employed for fixing the plate to be
bevelled to the travelling table of the machine, have been such as to obstruct and
hinder the workman from having a free view of the plate which free view is very
essential in order that the plate may be properly fixed and adjusted in the position for
being acted on by the cutters; this drawback I entirely remove by my improvements,
allowing to the workman a free view of his work, and I also cause the travelling
table to which the stereo or electro-plate is secured to travel (both when bringing the
plate under the action of the cutters and on the return movement) by means of a
screw or worm, which may be driven so as to produce the two motions of the sliding
plate before referred to, by means of bevel wheels, deriving their motion from pullies
in addition to the provision which I make of a hand wheel-which hitherto has been
the only means employed for giving such motions to the screw-in order that, as for
instance, in setting the stereo or electro plate, the sliding table may be moved into
any required position.
And in order that my improvements may be more fully understood I will now
proceed to describe the same with reference to the accompanying drawings in which
the same letters refer to the same parts in each of the Figures.
Figure 1 shows an end elevation of the machine, the sliding table G having the end
cut away in order to show more clearly the working of arrangements beneath.
Figure 2 represents a front view of the machine having half of the front of the
frame B cut away thus clearly showing the working, of the screw or worm M with its
nut Land of the hand wheel and screws engaging in its nut r.
Figure 3 shows a plan view of the whole machine. Figure 4 is a transverse
sectional view and Figure 5, a longitudinal sectional view of the sliding table G.
Figures 6 and 7 show respectively a front elevational and a horizontal sectional
view of the bearings in which I cause to run the shaft E carrying pullies e, e,
Figures 1 and 3 and disc F Figures 1, 2, and 3.
In Figures 1, 2, and 3 A and A' are frames of the machine, to the frame A is fixed
a hollow bed B of shape as shown, to frame A¹ is fixed casting C and to this is fixed
the small frame D by means of the screws a a, casting C being hollow to receive the
lug 6 shown by the dotted line, Figures 1 and 2, the screws a, a, working on the lug;
the two uprights c, c, of frame D are provided at d Figures 1 and 3, with bearings, in
which bearings run shaft E to which fixed disc F and the pullies e, e.
Above the hollow bed B is a small travelling table G the square edge f Figure 1, of

page_text: the inner side of which, runs on the square edge g g of inner side of frame B Figures 1
and 3, the outer side of this travelling table being split, contains, at either end a small
roller running on the conical top of outer side of frame B Figures 1, 2, and 3.
In Figure 2, one half of the outer side of B is cut away to give a front view of the
arrangement applied to the underside of the sliding table G and in Figure 1 the end
of said sliding plate is removed thus showing an end view of the same arrangement;
To the underside of sliding table G is adapted a small rocking shaft H Figures 1, 2,
protruding through ends jj to each of these protruding ends of the shaft H is adapted
a small leverk these levers being connected with links 7 l adapted to the ends m, m
of the platen J situated on the innerside of the top of sliding table G: This platen is
free to move vertically up and down on the studs n n passing through the bosses 0, 0,
and is assisted in rising vertically by means of small spiral springs p p placed between
the platen J and top of sliding table G Figures 1, 2, 4, and 5.
At the middle of shaft H is attached thereto a lever q having a forked end, to
this forked end is adapted a trunion nut in which works the screws actuated by
the hand wheel t, this screw being kept in position by means of the collar u and
bracket K: All this said arrangement is more clearly shown at Figures 4 and 5
where the bracket I referred to in the succeeding paragraph is omitted.
To the underside of G Figures 1 and 2 is also affixed a bracket L the bottom of
which terminates in a nut L'in which engages the screw or worm M.
Standing up from the face of sliding table G and fixed thereto is a small rib in
height about of an inch and at right angles to the bars wo wo of a swinging gauge
pivotted at y y this small rib or "setting line" " used in connection with the swinging
gauge wallowing the electro or stereo plate to be set "square" with the cutters.
To one end of the screw or worm M Figure 3 is provided a hand wheel N and to
the other end is adapted three bevel wheels a', a', a', actuated by the pullies bi b
these two pullies being used for reversing the motion of the screw M and thereby
reversing the motion of the sliding table & the pulley el being a “loose" pulley-
"
A shaft N¹ Figuros 1 and 3 adapted by means of trunion bearings to the
lower part of frames A and A carries at its outer extremity the "fast" and "loose
pullies P and P and in a position, between the frames, vertically beneath the flanged
pulley e, Figures 1 and 3 carries a third pulley Q.
When the inachine is at rest and it is wished to bevel a stereo or electro plate,
the operator by means of hand wheel and screw s engaging in nut and giving
motion to the rocking shaft H and levers kk and links having caused platen J
Figure 2 to rise vertically places the plate to be bevelled on the table G pressing it
against both the bar w of the swinging gauge and also against the small "setting
line" the plate is then fixed by turning the hand wheelt in the reverse way and
thereby bringing down platen J rigidly on it; The travelling table G is then
brought into the required position for allowing the stereo or electro plate thereto
affixel, being acted on by the cutters adapted to disc F. The arrangements
of the cutters to perform their separate functions is as follows, the cutter being
set with its cutting face lower than the cutting faces" and when acting on the
plate to be bevelled cuts through and entirely removes the "clump" or rough metal
(extending the length of one side of the stereo plate caused by the inpouring of
metal in the mould in which the electro or stereo plate is cast) the cutter being
set with its cutting face higher than the cutting face of " but "set" more towards
the outside of the machine, acts in its turn on the plate and cutter 11 being inclined
still more than j¹ towards the outside completes the whole operation from detaching
the "clump" to bevelling at the required angle the stereo plate, without removing
it from the machine and with only one "fixing" or "adjusting."
"
"
A strap from the main shaft of the building in which my machine is situated runs
on loose pulley P¹ Figures 1 and 3, when it is required to set the disc in motion
it is only necessary by means of the striking fork R moved by the rod S to cause
the strap to run on "fast" pulley P, the motion from Q to flanged pulley e being also
imparted by a strap or helt; From the broad pulley e Figures 1 and 3 is a connection
by means of a strip or belt to the loose pulley c¹ Figure 3, when it is required that
L

page_text: the table G should travel by moving the lever Figures 1, 2 and 3 connected by
means of a rod m¹ and crank n¹ Figure 3 to a fork causing the strap to run from
pulley on one of the pullies 61 motion is given to the table G varying in direction
according as to which of the pullies 6¹ the belt is caused to run on.
The bearings situate at 01 Figure 1, I construct in such a manner that according
as I wish I may set shaft N either to the right or left hand of the centre of the
machine Figure 2, this sideways shifting is accomplished by means of screws 9', 9
shown in Figure 1 and dotted at Figure 2; A like sideways motion is also allowed
to casting by means of inserting or withdrawing the screws a a a a adapted to
either side respectively of casting C and working on lug b attached to D but
dependent in the hollow of C.
I will now proceed to describe the particular bearings in which 1 cause to run the
shaft E carrying disc F and pullies e e Figure 6 being a front view and Figure 7 a
vertical sectional view of these bearings; the bearing d is bored in a conical manner
as shown to receive the shaft which is of the same shape at the place wherein it
rests in the bearings; the hearing d having cast on it the trunions running
in the split carrier t¹ shown at Figure 7, this carrier is fastened together by
bolts, 1, 1, 1, the screw s being adapted to the top of the carrier t¹ and engaging
on the threads in the cap R' of the bearing frame in such a manner that by raising or
lowering the screw the carrier in which d works may also be raised, or lowered,
and according as to which carrier is raised or lowered either that carrier in the
frame nearer to the disc or that carrier in the frame more remote from the disc,
the disc, is thereby given an upward or downward tilt thus decreasing or increasing
the angle at which the bevel is produced.
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 :-
:
111
First In a machine for bevelling stereo and electro plates the combination of the
pullies b, c, b bevel wheels a' a' a¹ and the screw or worm M giving the backward
and forward motion to the sliding table G and of the disc F driven by power, and
supplied with cutters substantially as and for the purposes herein set forth.
Second: The combination of platen J capable of moving vertically on studs n n
fitted with links 1, 1 and levers kk adapted to rocking shaft H lever q nut and
screw actuated by band wheel tall of which combination allows the operator to
rigidly affix the plate to be worked to sliding table G substantially as herein
set forth.
Third: The combination of the three cutters j', 11, 111, set at their various angles
and fitted to perform their various operations consecutively, the last cutter j¹¹¹ leaving
the "job" in a finished state substantially as described.
Fourth: The adaptation of conical trunion bearings d to conically turned shaft E so
as to enable the required "tilt" to be given to the disc F substantially as herein set
forth.
:
Fifth The combination of screws a a working on lug band of bearings 01
respectively allowing to b and to shaft N¹ of being set sideways out of the centre of
the machine according as circumstances may necessitate substantially as and for the
purposes specified.
ated April 19th 1889.
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, W.C., Agent for Applicant.