An Improved Machine for Forming and Punching Corrugated Strips for Metallic Mats and other purposes.
Year: 1890

page_text: COMPLETE SPECIFICATION.
An Improved Machine for Forming and Punching Corrugated Strips
for Metallic Mats and other purposes.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. & Wm. Clark, of 53, Chancery
Lane, in the County of Middlesex, Fellow of the Institute of Patent Agents, do hereby
declare the nature of this invention (a communication to me from abroad by William
Chauncey Spelman of No. 59, East 59th Street, in the City, County, and State of
New York, United States of America, Manufacturer of Metal Goods,) 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 a new machine for automatically forming and punching
corrugated strips for metallic mats and other purposes, and consists mainly in
combining, with ordinary corrugating rollers, certain corrugating plates and per-
forating devices, as will be hereinafter more fully described. The metallic mats
referred to are composed of corrugated or analogously-formed metallic strips secured
together to form a cellular appearance.
The object of the invention is to provide a machine which shall first corrugate the
metallic strips by ordinary corrugating rollers, then "true" them by means of
corrugating plates so that the strips may "register" or fit perfectly together and at
the same time punch or perforate them so that the corrugated strips may be secured
by rods passing through these punched holes or perforations to the frame of
the mat.
Reference is to be had to the accompanying drawings, forming part of this
Specification, in which
Figure 1 is a front elevation of a machine embodying the invention.
Figure 2 is a side elevation of the same.
Figure 3 a cross-section of Figure 1, on line cc, shewing the corrugating
plates open.
Figure 4 a horizontal section of Figure 3, on line k.
Figure 5 an enlarged view of the corrugating and punching devices, the corrugating
plates being closed and the punching device passed through the strip.
Figure 6 a side view of the finished corrugated strip, and
Figure 7 a face view of the same.
Similar letters of reference designate similar parts in the several views.
A represents the bed-plate of the improved machine upon which uprights A' A' A³
rest being bolted or otherwise secured to said bed plate and joined at their tops, to
form a frame, by a bar a. The uprights A' A' are provided with suitable bearings
for the main shaft. B and pulley wheel O which actuate the machine. E and F are
two rock shafts working in suitable bearings placed in the uprights A¹ A² above,
and on either side of, the main shaft B. E and F¹ are two similar rock shafts
working in bearings placed in the uprights A¹ A' above the bed plate. G is a slide
box arranged along the outside of the upright A³ provided with gudgeons bb at the
upper end pivoted to suitable toggle joints 636 connected with the upper rock
shafts E, F, respectively. The slide box G is similarly provided at its lower end with
gudgeons e e pivoted to toggle joints e² e³ connected with the lower rock shafts E', F'.
The slide box G thus operates both sets of rock shafts E, F, and E¹, F1, when it
moves up and down. The slide box G is operated by a block f and crank fl
fastened to a cog wheel d at one end of the main shaft B. The block f and pin f¹
raise and lower the slide box G by reason that the block slides laterally in the yoke g
situated on the under side of the slide box G when the cog wheel d is rotated. The
upper rock shafts E and F connect by toggles with the cross-head R to depress
and raise it and the rods 66 extending from said cross-head R to the upper corrugating

page_text: plate P, as clearly shewn in Figure 3. The lower rock shafts E' and Fare similarly
connected by toggles ee to a block s raising and lowering said block, the upper
ends of these toggles e connecting with screw bearings that project from the
block S. The lower corrugating plate Q is insert d or dowelled in this block S, as
shewn in Figure 3. It will thus be seen that the motion up and down of the slide
box G will be imparted through the toggles to the cross head R and block S and
thence to the corrugating plates P and Q, bringing them together and separating
them at certain intervals depending upon the motion imparted to the slide box G
through the main shaft B.
His a yoke bar lying between the uprights A2 and the slide box G. This yoke
bar H is pivoted at its centre H' to the upright A2. The upper end of the yoke bar
is recessed and adapted to receive a block secured by a pin to the cog wheel d¹
having its bearing in the upright A2 and geared to the cog wheel d operated by the
main shaft B. At the lower end H2 of this yoke-bar a screw-adjustable connecting
rod M is pivoted. This connecting rod M is pivoted at a to a lever arm
or projection N of a free-ring O placed about the ratchet i. The free-ring O
has an indentation or recess at its upper end into which the pawl or stop m
of the ratchet i is set. The ratchet is keyed to the shaft which bas its.
bearings in the frame I situated in front of the machine and attached by bolts or
otherwise to the front of the uprights A¹ A2, as shewn in Figure 1. A corrugating
roller is keyed to the same shaft upon which the ratchet is keyed and is
operated by the said ratchet. The yoke bar H has an oscillating motion conveyed
to its upper end by the cog wheel d' and transmits this motion to the free-ring O
through the connecting rod M and lever arm N. The free-ring O when pushed in
one direction by its lever arm N carries the pawl m with it, slipping over the teeth
of the ratchet i, but when pushed in the other direction the pawl m drops into the
teeth of the ratchet i and pushes it and the corrugating roller / forward, thus
producing alternate motion and rest in the corrugating roller l. The
gating roller is connected by a suitable train o o with the lower roller / and moves
upper corru-
and remains at rest with the lower roller. These two corrugating rollers form the
corrugating device in the machine and receive their motion, at stated intervals, from
the main shaft B, through the cog wheels d and d¹ and the connecting mechanism
previously described. Hence it will be seen that both the corrugating plates P and Q
and the corrugating rollers; and receive motion from the main shaft, but, by the
arrangement of the connecting mechanism, the plates and rollers are operated at
different intervals of time. For instance, when the slide box G is depressed, as shewn
in Figure 2, the corrugating plates P and Q are separated. But, at the same time,
the connecting rod M and free-ring O are drawn inward by the yoke-bar H and the
pawl m, dropping into the teeth of the ratchet wheel i, sets the corrugating rollers
in motion. In the same manner, while the corrugating plates P and Q are being
brought together, the slide box G is raised and the yoke bar H pushes the connecting-
rod M outward, the free-ring.O carries the pawl'm over the teeth of the ratchet i
and the corrugating rollers remain at rest.
In connection with these corrugating and "trueing" devices, I have invented a
mechanism which shall punch holes in the strips whilst they are held between the
corrugating plates. This I accomplish by placing upon the main shaft B, between
the toggles 66, a crank r attached by the screw-adjustable rod r³, pivoted at tt, to
the block T carrying the punching device or devices p. The punching device p passes
through holes in the upper and lower corrugating plates. The revolution of
the crank r around the main shaft B is so timed that the punching device p is passed
through and wholly withdrawn from the corrugating plates whilst they remain in
contact.
The operation of the machine is as follows;-The strip or strips of metal are first
fed into the corrugating rollers through the feed channels L, L, L, which may be one
or more, as desired. The free-ring O is actuated and sets the corrugating rollers in
motion, and the strip is corrugated with a number of corrugations depending upon
the number of teeth over which the pawl slides. To vary the number of corrugations,

page_text: «
all that is necessary is to pivot the connecting rod M to the crank N at n or n¹. The
strip, after it has been corrugated, is nextbrought between the corrugating plates P
and Q and when the corrugations fit into the corrugations of the plates the corrugating
rollers cease to act, the corrugating plates close together, thus straightening or
truing" the imperfect form of the strips as they left the corrugating rollers.
Whilst the strips are held in these corrugating plates the punching mechanism is
operated and passes through and is withdrawn from the strip. The corrugating plates
then separate and the corrugating rollers again begin to act, and the operation
is continued indefinitely, until the strips have all been corrugated, "trued," and
punched.
It is obvious that the corrugating rollers may be adjusted by means of screw
bearings so that the strip may be corrugated to any depth and form. Suitable
guides qq may also be employed to keep the corrugated strips in proper position in
the corrugating plates, and also suitable channels y and y¹ for the entrance and exit
of these strips to and from the corrugating plates.
may
The mechanism may, of course, be varied as the skill of the machinist
desire;
and I do not desire, therefore, to limit myself to the specific mechanism shewn and
described.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is;
1. In a machine for corrugating and "truing” metallic strips, the combination of
the corrugating rollers j, 1, with the corrugating plates P, Q, and with means, sub-
stantially as described, whereby said corrugating rollers are brought into motion
when the corrugating plates are separated, and remain at rest when said corrugating
plates are brought together, as and for the purpose set forth.
2. In a machine for corrugating, "truing," and perforating metallic strips, the
combination of the corrugating rollers j, l, with the corrugating plates P, Q, and
with the punching device p and with means, substantially as described, whereby said
corrugating rollers are brought into motion when the corrugating plates are separated,
and remain at rest when said corrugating plates are brought together, and with
means, substantially as described, whereby said punching device is passed through
and wholly withdrawn from the corrugating plates whilst the same remain together,
as and for the purpose set forth.
Dated this 21st day of October 1890.