Improvements in Perforating Attachments for Printing Presses.
Year: 1891

page_text: Date of Application, 16th June, 1891-Accepted, 18th July, 1891
COMPLETE SPECIFICATION.
Improvements in Perforating Attachments for Printing Presses.
We, GRANT HIRAM SLOCUM, Editor, WALTER JOSEPH GAMBLE, Attorney,
and TIMOTHY CHARLES QUINN, Attorney, all of Caro, in the County of Tuscola,
and State of Michigan, United States of America, 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 :-
This invention relates to new and useful improvements in perforating attach-
ments for printing presses, by means of which the printing and perforating may be
accomplished simultaneously; and consists in a certain construction and arrange-
ment of parts, whereby the reciprocation of the perforating blade in the operation
of perforating, is accomplished without moving said blade longitudinally, thereby
preventing the action of the blade from moving the paper and slurring the print,
as is incident in devices of this kind in which the perforating blade has a drawing
or longitudinal motion; and also consists in the employment of an outer and an
inner case, the inner case being slidingly located in the outer case, and having
means for detachably holding the perforating blade, or a series of perforating
blades, therein.
After the act of perforating the blade is returned below the face of the type so
as not to injure the inking rollers when passing over the face thereof. All
of which will be hereinafter more fully set forth, and the essential features of the
device pointed out particularly in the claims.
In the accompanying drawing forming a part of the Specification ;-
Fig. 1 is a sectional view through the bed and platen of a printing press, showing
the perforator case located in the bed of the press with one of its side plates
removed exposing the interior arrangement of parts.
Fig. 2 is a view of the perforating device with one of the side plates of the
outer case removed, showing the position of parts when the perforating blade is
raised.
Fig. 3 is a side elevation of the perforating device, with the parts in their
normal position.
Fig. 4 is a side elevation of the inner case, showing a section of the perforating
blade removed therefrom.
Fig. 5 is a transverse section on dotted line 1-1 of Fig. 4.
Fig. 6 is a transverse section on dotted line 2-2 of Fig. 4.
Referring to the letters of reference, A indicates the bed, and B the platen of
the press.
The outer case is composed of two plates C and the dividing rail D, said plates
being secured to the sides of said rail by means of the screws e. The inner case is
composed of two plates H H¹ secured together by the screws o, as shown in Figs. 4
and 5. The inner face of the plate H' is provided with the shoulder o' which forms
an opening e' between the adjacent faces of the plates H H' when said plates are
placed together, in which opening the perforating blade I is set, as clearly shown in
Figs. 5 and 6, said blade being firmly secured therein by means of the screws o
which draw said plates tightly together upon said blade.
.
The bar E and the inner case are located in the outer case, the bar E lying upon
the dividing rail D and adapted to slide longitudinally thereon, said bar being held
in place by the pins v that extend across the upper edge of the bar and are secured
at their ends in the sides C of the outer case, as shown in Fig. 2. The upper edge
of the bar E is made declinatory through a series of graduations, each graduation
terminating with an inclined face 3. The inner case is adapted to lie upon the

page_text: bar E within the outer case, and is provided with corresponding graduations in its
under edge having the inclined faces 4. The graduations in the meeting edges of
said case and bar fitting one into the other, their inclined faces 3, 4, being con-
tiguous when said parts are in their normal position, as shown in Fig. 1.
F indicates an elbow-lever pivoted at c between the ends of the plates C of the
outer case. The inner end of said lever is provided with a balls that lies in the
socket s' in the end of the bar E, as clearly shown in Figs. 1 and 2.
This improved perforator is adapted to be keyed in the chase with the type and
set in the bed A of the press, as shown in Fig. 1, and is actuated by contact of the
outer end of the lever F with the pin a set in the platen B of the press, as said bed
and platen are brought together in the act of printing; the operation of the parts
being as follows;-
As the outer end of the lever F is depressed by contact with the pin a, the inner
end of said lever lying in the socket &¹ in the end of the bar E is thrown in, thereby
sliding said bar longitudinally, and by means of the inclined faces 3 of said bar
bearing against the inclined faces 4 of the inner case, raising said case squarely
upward or at right-angles to the motion of the bar E, and projecting the teeth u of
the perforating blade, as shown in Fig. 2. The inclined faces 3, 4, of the bar E
and the inner case respectively, will slip past each other as the inner case reaches
its maximum height, carrying the points of contact between the meeting edges of
said case and bar to the horizontal portions thereof, as shown at a' in Fig. 2, thus
affording a firm bearing for the perforating blade during the operation of per-
forating, and in which position of parts as the lever F is still further depressed
while making the impression, the bar E will slide under the inner case without
moving it. This end play of the bar E also permits the bed and platen of the press
to move some distance apart before the perforator blade is depressed, by which
arrangement the teeth of the perforating blade are at no time in contact
with the paper when said blade is in motion, thus obviating the slurring of the
print.
As the pin a on the platen of the press releases the outer end of the lever F, the
spring & secured in the dividing rail D and bearing against the under face of said
lever, will force the outer end thereof upward, drawing the inner end of said lever
which lying in the socket s' in the end of the bar E slides said bar back, when the
spring secured in the upper edge of the bar E and bearing in the inclined recess b
in the under edge of the inner case, will draw said case down to its normal position,
as shown in Figs. 1 and 3, depressing the perforating teeth. The end of the inner
case is provided with a vertical slot n, through which passes the pin n¹ the ends of
which are secured in the sides of the outer case, said pin lying in the slot n guides
the inner case in its reciprocal movement, and confines it within the outer case.
The under edge of the inner case is provided with notches i, (see Fig. 2) that fit
over the pins v, so as to permit the inner case to lie closely upon the bar E when in
the position shown in Fig. 1.
It will be seen on looking at Fig. 4, that the perforating blade is made in
sections, of which there may be two or more, and which are secured to the inner
case between the plates H H₁ by the screws o, as before described. This is a very
important feature, as the blade may then be made with much less cost, and in
perforating short work but one section of the blade need be used, and also permits
the blade to be removed and sharpened; and in case of injury to the blade, the
injured section may be readily removed and a new one quickly replaced.
openings through the plate C of the outer case, permit access to the screws o, so
that the perforating blade, or any section thereof, may be removed without
removing the inner case.
The
The arrangement of parts is such, that when the inner case is withdrawn within
the outer case after the operation of perforating, the teeth u will stand below the
level of the type, so that the inking rollers when passing over the face of the type
will not be injured by said teeth.

page_text: Having now particularly described and ascertained the nature of our inven-
tion, and in what manner the same is to be performed, we do declare that what
we claim is ;-
Claim 1. In a perforating attachment, the combination of the outer case, the
longitudinally moving bar located in said case and having a series of inclined
bearings in its upper edge, the vertically reciprocating bar or case carrying the
perforating teeth located in said outer case above the longitudinally moving bar
and having a series of inclined bearings in its under edge, the actuating lever
pivoted in the end of the outer case the inner end thereof engaging the end of the
longitudinally moving bar, substantially as set forth.
Claim 2. In a perforating attachment, the combination of the outer case, the
longitudinally moving bar located in said case said bar having a series of inclined
bearings in its upper edge, the vertically reciprocating bar or inner case carrying
the perforating teeth, and having a series of inclined bearings in its under edge, the
spring secured at one end in the edge of the longitudinally moving bar, the opposite
end of said spring lying in a recess in the under edge of the inner case, the actuating
lever pivoted in the end of the outer case its inner end engaging the end of the
longitudinally moving bar, the spring secured in the end of the outer case and
bearing against the end of said lever, substantially as specified.
Claim 3. In a perforating attachment, the combination of the outer case, the
longitudinally moving bar located therein, said bar having a socket in one end, the
inner case carrying the perforating teeth located in the outer case above the longi-
tudinally moving bar and adapted to be actuated thereby, the lever pivoted in the
end of the outer case, said lever having a ball on its inner end adapted to lie in the
socket in the end of the longitudinally moving bar, as set forth.
Claim 4. In a perforating device the combination of the outer case, the inner
case slidingly located therein, the perforating blade detachably secured to the inner
case, substantially as specified.
Claim 5. In a perforating device the combination of the outer case having an
opening through the side thereof, the inner case carrying the perforating blade, a
screw passing through said case for detachably securing the blade thereto, the
inner case located in the outer case so that said screw in the inner case will register
with the opening in the side of the outer case, substantially as specified.
Dated this 20th day of December 1890.
GRANT HIRAM SLOCUM.
WALTER JOSEPH GAMBLE.
TIMOTHY CHARLES QUINN.