Year: 1891

page_text: Date of Application, 4th Mar., 1891—Accepted, 2nd May, 1891

page_text: through rollers are driven simultaneously by means of spur wheels f and d secured
to the fixed rollers and e and gearing into a spur wheel h.
In order to obtain an intermittent feed corresponding to the requirements of the
process a ratchet wheel m is secured to the spur wheel and is caused to rotate by
a spring pawl i mounted in a lever n which derives a reciprocating motion by means
of a connecting rod and a disc crank from the crank shaft k. Thus at each
revolution of the crank shaft k the ratchet is rotated to an extent corresponding to
the amount of the forward stroke of the lever n. During the backward stroke of
the lever n the pawl rides over the ratchet wheel and the latter remains still.
During this interval of rest the cutting out punches t come into operation and the
blanks are cut out and pushed into the matrix a. The holes o Fig. 1 are also
pierced by the piercing punches t¹.
Figs. 54, 550 show the details of the punches on a larger scale.
The matrix a is bolted to the frame A. The matrix is in two parts between
which an aperture is left for the passage of the paper strip. The front part of the
matrix serves as a guide for the punches tt. Since two paper bars are formed
simultaneously there are two cutting out punches t and four piercing punches t
which are shown in an end elevation at Fig. 5°.
Fig. 5 is an end elevation of the entrance to the pressing device as seen through
of Fig. 5 and shows a plate which is inserted between the end of the frame A. and
the matrix a for holding the ends of the guide bars ..
The amount of feed corresponds to the distance of the cutting out punches from
the piercing punches t¹ so that after each forward movement of the strip the centre
of the holes o may lie on the centre line of the cutting out punches t.
In order to hold the ratchet wheel steady after each forward movement and to
accurately control the feed a brake lever m³ provided with a weight m² is caused to
bear on a brake pulley secured to the spur wheel h.
In order to accurately time the partial rotation of the ratchet wheel m to take
place at each revolution of the crank shaft when the disc crank is in a certain
position the pawli has an independent motion on the arm and is connected by a
link (Fig. 4) with a crank pin on the disc crank set eccentrically to the crank
pin 2
In Figs. 2 and 2D the means for effecting this adjustment are shown separately.
The pawl is formed as a bell crank lever one arm of which works in the
link. The other end of the link works round the back part 3 of the pin
The part is eccentric to the part 2. A fork in the link receives the arm the
bolt of which works in 'slots in the link >2.
If now the link is caused to move backwards and forwards by the revolution of
the pin about the crank shaft the forked end has for a portion of its stroke no
effect on the bolt of the arm. When however the end of the slot comes into
contact with the bolt as shown in Fig. 2 the link acts on the arm and lifts the
pawl out of the ratchet m. On the link retiring by the continued revolution of
the crank pin the pawl is drawn into gear with the ratchet by a spring secured at
one end to the lever n and at the other end to a set screw on the pawl.
The purpose of connecting the pawl with the pin ² (on which works the link
actuating the lever n) is to lift the pawl before the lever n reaches the end of its
stroke. By this means the ratchet wheel m can always he stopped exactly at such
a point in its rotation as will advance the paper strip the proper distance at each
operation.
The cut out blanks pass in succession from the matrix a into the guide bars J
which are arranged in such a manner that the passages may be contracted and when
the blanks reach the contracted part their progress is impeded and they can only be
pushed forward by the use of a certain amount of pressure. This pressure is
utilized for the purpose of pressing the gummed and cut out blanks into intimate
contact and can be regulated by varying the contraction of the passages. The
necessary pressure for overcoming the resistance of the contracted passages is
exerted at each forward stroke of the cutting out puncht so that each cut out

page_text: blank is firmly pressed with its gummed side against the preceding blank and all
the blanks are pushed forward in the passages to an extent corresponding to the
thickness of the paper. The mode of contracting the passages is shown in
Figs. 2 and 2 from which it will be seen that one side of cach passage is formed
from a bar capable of lateral adjustment to any desired extent by means of set
screws. By thus contracting the passages the blanks may be subjected to very
great pressure when pushed forward by the cutting out punches. They remain
subject to this pressure until they have passed the contracted part of the passages,
by which time the paste or other adhesive substance has become perfectly dry and
hard so that the adhering blanks leave the passages in the form of a solid bar. It
is necessary to prevent the bottom wide surface from adhering to the plate carrying
the guide bars which form the passages owing to the adhesive material which
exudes under pressure, particularly so when the working of the machine is.
interrupted and we prefer to use simple cross bearers carrying the set screws
as shown in Fig. 2B.
The machine is driven from a strap pulley Q provided with a friction clutch U.
(Figs. 4 and 6) the latter being adjustable on the shaft by means of a hand
wheel D and a screw D¹. The shaft rotates with the pulley Qwhen the cone U
of the clutch is forced into its seating in the pulley Q. The hand wheel D then
rotates with the shaft but if it is held the screw D' will withdraw itself from the
shaft and the cone U will be drawn out and the machine be stopped. To enable
the attendant to effect this instantly when out of reach of the hand wheel the
screw D¹ of the hand wheel is provided with a disc S on which works a brake.
band B connected by a link E to a lever El. On the same axis as the lever E¹ is
a treadle T. The effect of pressure on the treadle T is to depress the free end of
the lever E, to pull down the link E and to apply the band brake B to the disc S
upon which the screw D¹ runs out and the machine is stopped.
The apparatus G on the top of the machine, for applying the paste or other
suitable adhesive substance, contains the latter in a receptacle heated by steam in
which rotates the pasting roll W so that as it turns round it takes up the paste and
with the aid of the rollers W1 W₁ spreads it on the underside of the strip pas it
passes under the press rollers V V. To ensure the proper tension in the strip a
weighted brake lever bears on the axle of the reel H.
Two strips which have been previously pasted together can be also operated upon
but in such case instead of a single reel the arrangement shown in Fig. 7 is used.
In this modification there are two reels R each containing a roll of paper strip p p.
Between the reels R is the pasting apparatus G the lower roller u of which serves
as a dip roller and runs in the paste trough. The middle spreading roller takes
the adhesive material from the dip roller and spreads it at both sides on the paper
strip led over it. There are adjustable guide rolls provided for pressing each strip
against the rollers.
The top roller ' also serves to spread the adhesive material
which it takes up from the large middle roller.
The two paper strips leave the pasting apparatus at the top roller with their
pasted surfaces in contact and pass through the rolling apparatus W the rollers of
which may be heated by steam or in other well known ways. One set of the rolls
run in fixed bearings while the other set run in adjustable sliding bearings in order
that the distance apart of each pair of the rolls may be regulated for the purpose
of varying the pressure. Owing to the pressure of these rollers any thick places
which may exist in the paper strips are rolled down and the two strips leave the
pressing rolls as a single strip of even thickness throughout its length so that when
cut out and formed into bars in the machine there is always the same number of
blanks in a given length of the bar whereas in using single strips the number of
layers in a given length of the finished bar is different in different places owing to
the continual occurrence of places of unequal thickness. The doubled strips are
next pasted on one side, cut out, and pressed into bars in exactly the same manner
as single strips as hereinbefore described. Another advantage of this method of
working is that the productive capacity of the machine is doubled.

page_text: Our said invention is in no wise limited to the production of bars of the special
section shown and for the special purpose indicated since by using punches of
various shapes bars of any desired profile may be produced.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. The combination and arrangement of parts constituting a machine for the
production of bars composed of layers or blanks of paper of a shape corresponding
to the profile of the bar by punching out such blanks from a strip having an inter-
mittent travel through the machine, coating the said blanks on one side with
adhesive material, pressing them through a matrix into guide bars shaped internally
to correspond to the shape of the blanks and provided with means for contracting
the passage for the purpose of impeding their movement and subjecting them to the
pressure of the succeeding layers for uniting them together substantially as herein-
before set forth and shown.
2. In a machine for the purpose referred to in Claim 1 the intermittent feed
motion for the paper strips consisting of a ratchet wheel actuating feed and draw-
through rollers arranged above and below the punches operated from the crank
shaft substantially as and for the purpose hereinbefore set forth and shown.
3. In a machine for the purpose referred to in Claim 1 the apparatus for applying
the adhesive substance, consisting of a receptacle with a roller W rotating therein
and driven from the machine spreading rollers and press rollers substantially as and
for the purpose hereinbefore set forth and shown.
4. In a machine for the purpose referred to in Claim 1 the apparatus illustrated
in Fig. 7 for producing layers of uniform thickness by uniting two strips of paper
by means of an adhesive substance applied to both strips and pressing the two
coated surfaces together so as to form a single strip substantially as hereinbefore
set forth and shown.
Dated this Third day of March 1891.
EDWARD TURNER WHITELOW,
70, Deansgate, Manchester, Agent for the Applicants.