Improvements in and relating to Stapling Machines for Use in Binding Paper and analogous Materials.
Year: 1894

page_text: Date claimed for Patent under Sect. 103 of Act,
being date of first Foreign Application (in
United States of America),
App
1904
Date of Application (in United Kingdom), 11th Oct., 1894
Complete Specification Left, 11th Oct., 1894-Accepted, 8th Dec., 1894
បរម
United States of America),
Date of Application (in United Kingdom), 11th Oct., 1894
Complete Specification Left, 11th Oct., 1894-Accepted, 8th Dec., 1894
Date of Application (in United Kingdom), 11th Oct., 1894
Complete Specification Left, 11th Oct., 1894-Accepted, 8th Dec., 1894
Improvements in and relating to Stapling Machines for Use in
Binding Paper and analogous Materials.
I, EDWIN TRUMAN GREENFIELD, of No. 44 Broad Street, New York City,
in the County of New York and State of New York, United States of America,
Electrician, 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 :-
My invention is directed particularly to improvements in that type of paper
binding machines in which the binding of the material is effected by the formation
of binding staples from a strip or sheet of metal and the same will be fully
understood by referring to the accompanying drawing taken in connection with
the following Specification, the points of especial novelty of invention being
particularly pointed out in the claims at the end of this Specification.
Figure 1 of the drawing represents a vertical sectional view of my improved
machine, and
Figure 2 an eud view thereof with the face plate removed as seen looking at
Figure 1 from the right hand toward the left hand side of the drawing.
Figure 3 is a transverse sectional view through the body of the machine taken
on the line 3-3, Figure 1, and as seen looking in the direction of the arrows from
the right hand toward the left hand side of the drawing.
Figure 4 is a horizontal sectional view taken through a portion of the machine
on the line 4-4 Figure 1, and as seen looking from the top toward the bottom of
the drawing in the direction of the arrows.
Figures 5 and 6 are, respectively, perspective detail views of the staple forming
and staple driving plungers.
Figures 7, 8 and 9 are perspective views illustrating in full lines the strip of
material from which the staples are formed and in dotted lines the successive
positions of the staple forming and staple driving plungers, the formed staple and
the material to be bound together with the clinching anvil upon which the material
rests being also illustrated in full lines in Figure 9.
Figure 10 illustrates in plan view a preferred form of metal strip or block from
which the staples are to be formed, and
Figure illustrates in perspective view a staple as it is formed preparatory to
driving and clinching.
A represents the base of the machine having cast integral therewith a hollow
sustaining arm B which acts as a support for the working parts of the machine.
M is a clinching anvil secured to the base A by screws n, n and having in its
upper face a clinching groove m slightly inclined at each end as shown in dotted
lines in Figure 2 and in perspective view in Figure 9.
K³ is a staple forming plunger made preferably of chilled or cast steel, said
plunger being provided with a longitudinal groove and a pair of staple forming

page_text: and cutting extensions K', K', see Figure 5. This staple forming plunger is
provided on its rear face with a lug or extension L adapted to act as a bearing for
a strong sustaining spiral spring seated in the inner portion of an extension C of
the sustaining arm B which extension also acts as a vertical guide-way for the
staple forming plunger K.
K is a staple driving plunger having substantially the same width as the
longitudinal groove of the staple forming plunger K³ and a length not
substantially different from that of said staple forming plunger, k, being a pin or
lug on the rear face of the staple driving plunger K adapted to fit, when the two
plungers are connected together, in a vertically arranged slot in the staple
driving plunger, as clearly shown in Figures 2, 3, 4 and 5. These two plungers K
and Kare situated in their normal positions as shown in Figures 1 and 4 and are
held by the spring and lug L with their upper ends against the faces of cams
or eccentrics E, E and D keyed or secured to a shaft journalled in lugs or
ears c c at the top of the hollow extension C, said shaft being provided at one
end with an operating handle H held normally in the position shown in
Figure 1. Cis a face plate which is secured to the extension C by screws c¹ c',
see Figure 4, the arrangement being such that the groove or channel between the
extension C and this face plate acts as a guide-way for the vertically moving staple
forming and staple driving plungers K³ and K.
R represents the material from which the staples are to be formed, it being of
thin metal and of such a width as the necessities of the case may demand, the
preferable form of such metallic strip being that shown in Figures 7, 8, 9 and 10
wherein the.edges are illustrated as toothed or serrated so that when the staples
are formed and cut therefrom they may be easily driven through the material to
be bound, the sharp serrated ends or teeth pp facilitating the operation of driving
the staple S.
Grepresents a rectangular guide bar secured at one end by a screw thread g to
the inner face of the extension C and at the other end to a cross bar gl having its
opposite ends attached to the inner walls of the sustaining arm B. F is a
rectangular feed block which is adapted to slide loosely upon the bar G and carries
with it a feeding pawl P pivotally secured thereto by a screw Pl, said feeding
pawl being provided with serrations at its lower end and an operating handler
at its upper end which in turn is secured by a spiral spring 92 to the same block,
being a back stop for limiting the backward movement of this feeding pawl. To
the lower side of the block and integral therewith is a laterally extending
arm F adapted to sustain the strip of metal, as clearly shown in Figures 1
and 3.
Gis a spiral spring surrounding the guide bar G with its opposite ends resting
respectively against the cross bar g' and the block F, as clearly shown in
Figure 1.
K is a cutting koife or too! which is secured to the lower portion of the
extension C by screws k, k, Figure 2 said knife being located below and in
alignment with the rear or inner faces of both the staple forming and staple
driving plungers.
The operation. of the apparatus is as follows:
The material R from, which the staples are to be formed is placed in the
position shown in Figure 1, the operator having forced the feeding pawl P and its
sustaining block backward so that the spiral spring G will act continuously to
feed the material forward through the agency of the pawl P, retaining spring g²
and the sustaining arm F1.
The material to be bound is placed upon the staple forming anvil M in the
position sliown in Figure 9, the operator then taking hold of the handle H turns
it quickly to the right thereby causing the eccentrics or cams E E to force the
staple forming plunger downward, placing the spring under compression_and
causing the stationary knife K and the inner edges of the extensions K¹ K' to
simultaneously Bever and bend downward the legs s s of the staple S, the body of

page_text: the material which constitutes the unsevered portion of the staple permitting of
this: formation substantially as shown in Figure 8. As the operating handle H is
moved forward the second cam or eccentric D is now brought into action and the
staple driving plunger is forced forward until its inner edge severs the staple from
the blank R and a continuous movement of the operating handle forces the
staple forward through the material until the ends p p are turned inward and
clinched against the under face thereof by the groove m in the anvil M.
On restoring the operating handle to its original position the spiral spring kl
lifts the two plungers again into their normal position and as these plungers are
drawn past the inner end of the metal blank R, the spiral spring G₁ acting
through the guide block F, the feeding pawl P and sustaining arm F causes it to
be fed forward an additional step for another staple. The material to be bound
may now be removed and the operation repeated at pleasure.
I am aware that it is old in the art to construct staples from strips or sheets of
metal through the agency of a vertically moving plunger which shears and forms
the legs, of the staple from the blank on its downward movement and afterwards
severs the completed staple therefrom, which staple is removed from between the
forming ends of the plunger by a yieldingly supported pin and I make no claim
herein broad enough to include such a structure, my claims being directed to
mechanism for forming staples from strips or shects of metal and simultaneously
driving them into position through the agency of two plungers having independent
movement. I am also aware that it is old in the art to bind paper and analogous
materials by wire through the agency of two plungers having movement, the one
within the other and adapted one to form staples from the wire and the other to
drive said staples through the material to be bound, and my claims hereinafter made
are not designed to include inventions of this generic nature.
I do not limit myself to the special mechanism herein shown and described as
I believe that I am the first to devise means for forming and driving a staple from
a sheet or strip of metal without the agency of a staple forming mandrel or bolt
which lies in the path of the staple while it is being formed, and my claims are
to be construed broadly as to apparatus which forms and drives a staple through
the agency of a staple forming and staple driving plunger without any additional
means for effecting the forming of the staple.
Nor do I limit myself to the use of the, apparatus heroin shown and described
for binding paper and analogous materials as it is obvious that the clinching
anvil M may be done away with and-the apparatus used for cutting and forming
staples of substantially the form shown in Figure 11, which staples have a general
use in the arts so that I wish it understood that some of my claims hereinafter
made are directed broadly to staple forming apparatus.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A paper binding machine having a staple forming and a staple driving
plunger, in combination with a cutting knife located in alignment with the rear
or inuer faces of said plungers and below the material from which the staples are
to be formed, and adapted to shear or cut staples from a sheet or strip of metal.
2. Mechanism for cutting and forming a staple from the end of a strip or sheet
of metal, consisting of two plungers one of which cuts and forms the legs of the
staple, and the other afterwards severs the staple from the strip and-drives it, in
combination with means for giving to said plungers successive forward
movement.
3. A paper binding machine provided with a strip or sheet of staple forming
material in combination with a staple forming and a staple driving plunger, the
one adapted to shear or cut and form the legs of the staple from the end of the
strip or sheet and the other to afterwards shear or cut off the completed staple and
force it through the material to be bound.

page_text: 4. A paper binding machine having a staple forming plunger provided with a
pair of cutting and forming extensions, in combination with a staple driving
plunger having movement independent of the staple forming plunger, and a
stationary cutting tool located below and in alignment with the rear or inner faces
of both of said plungers; said parts being adapted to form and sever a staple from
a strip or sheet of metal and drive it through the material to be bound, substantially
as described.
5. Mechanism for forming staples from a sheet or strip of motal consisting of a
pair of plungers and a cutting knife, said plungers and the cutting knife being
located on opposite sides of the material, one of the plungers being adapted to
shear and form the legs of the staple and the other to shear it off and drive it
through the material to be bound, substantially as described.
6. Mechanism for forming staples from one end of a sheet or strip of metal
consisting of two plungers one sliding within the other and means for giving to
Baid plungers successive forward motion, in combination with a fixed cutting tool,
said plungers and cutting tool being located on opposite sides of the material, and
adapted to first cut and form the legs of the staple and afterwards cut or shear it
off and drive it forward...
7. Staple forming mechanism for cutting staples cross-wise from a strip of metal
cousisting of two separate plungers, one adapted to cut and shape the legs of the
staple and the other to sever it from the strip with cams adapted to give to said
plungers successive forward movement and a spring for returning the plungers to
their normal position, substantially as described.
8. Staple forming mechanism for forming staples from a strip or sheet of metal
consisting of staple forming and staple driving plungers and mechanism for feeding
the material forward, in combination with a cutting tool located in the path of
Baid plungers, whereby the legs of the staple are first cut and formed by one of the
plungers and the cutting tool and then sheared off or detached and driven by the
other plunger.
9. In a machine for making staples and binding together papers with such
staples by a continuous operation, the combination of two plungers for forming
the staples from strips of metal, one cutting and bending the legs of the staple and
the other severing the staple from the strip, cams for operating said dies, and
mechanism for feeding the strip of metal, substantially as described.
10. A staple forming machine for forming staples from a strip or sheet of metal
consisting of a pair of sliding plungers yieldingly sustained in the body of the
machine, haud actuated eccentrics or cams adapted to give to said plungers
successive forward movements, feeding mechanism adapted to feed the material
forward in successive lengths and a cutting tool located below the material and in
alignment with the inner faces of the plungers.
:
11. A paper binding machine for forming, driving and clinching staples from
one end of a strip or sheet of metal consisting of a pair of sliding plungers
yieldingly sustained in the body of the machine, a pair of hand actuated eccentrics
or cams adapted to give to said plungers successive forward movements, feeding
mechanism for feeding the material forward in successive lengths, a cutting tool
located below the material and a stationary anvil fixed to the base of the machine
and below the plungers, said plungers and cutting tool being adapted to first cut
or shear the legs of the staple from the transverse end of the strip of metal and
afterwards sever the completed staple from the strip and then drive it through the
material to be bound against the face of the anvil and clinch it on the under side of
Baid material, substantially as described.
'
"
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.; Agents for the Applicant.