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Патент USA US2136374

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Nov.- 15, 1938.
y
s. A. cRosBY
*
2,136,374
l
STAPLING MACHIVNE
Filed Augfzs, 19:56
2 sheets-sheet 1 '
ATTORNEY
Nov. 15., 1938.
.
ì
s, A¿ CROSBY
`
STAPLING
’
y
2,136,374
MACHINE
`
Filed Aug. 28, 195s
v 2 sheets-sheet 2
INVENTOR
BY
' ATTORNEY
2,136,374
Patented Nov. 15, 1938
UNITED STATES i’ATENT OFFICE
2,136,374
STAPLING MACHINE
Stephen A. Crosby, New York, N. Y., assignor to
Parrot Speed Fastener Corporation, Long
Island City, N. Y., a corporation of New York
Application August 28, 1936, Serial No. 98,273
17 Claims.
The subject matter of the present invention is
an improved stapling machine of the type adapted
to drive relatively heavy staples although in the
broader aspects of the invention it is not limited
5 in this respect. One object of the invention is
realized in the provision of an eflicient stapling
machine characterized by a one piece frame hav
ing means for conveniently positioning the'rear
, part of a staple supporting rail relative to the
10 ` rear part of the frame for locating the rail trans
versely of the frame and including spaced'sides
having means for readily positioning and locking
the forward part 0f the rail relative to the forward
part of the frame for locating the rail longitudi
15 ` nally of the frame.
The invention has as a fur
ther object the provision of a stapling machine
in which the sides of the frame and rail include
means for positioning and locking a housing rela
tive to the frame for readily locating the rail
20 ` vertically of the frame. The invention further
comprehends as an object the provision of a
stapling machine wherein the sides of the housing
comprise means for readily positioning a sheath
relative to the sides of the frame to locate the
25 sheath transversely, vertically and longitudinally
of the housing and wherein the sides of the
sheath include means for readily interlocking
with the housing to sustain the sheath in its
located position.
30
The invention has as anv additional object to pro
vide an improved stapling machine wherein the
sheath is in the form of a channeled member
having means for locating the staple carrying
rail centrally of the frame and wherein the locat
35 ing means is integral with the channel member
and serves an additional function of defining
a part of a vertical staple raceway with the rear
vertical and transverse face of the channelled
member which in cooperation with the forward
40 face of the rail forms the remainder of the ver
tical raceway which in turn is in communica
tion with the staple ejecting gap constituting the
forward part of the staple guide passageway
formed by the frame and the located rail cen
45
trally disposed therein.
Other objects, advantages and features of the
y invention are in part obvious and in part herein
after pointed out, however, the novel features
characterizing the invention are more particularly
set forth in the following description and de
iined in the appended claims although it is to be
understood that the invention both as to its organ
ization and the method of assembly and/or oper
ation together with the objects, features, and
advantages thereof will be best understood. from`
(C1. 1_3)
the following description of the herein disclosed
embodiment when read in the light of the ac
companying drawings in which:
Fig. 1 is a side view of the improved stapling
machine accorded to the invention shown partly
broken away to illustrate the internal construc
tion.
Fig. 2 is a vertical and longitudinal sectional
View of Fig. 1.
Fig. 3 is a sectional view taken on the line 3-3 10
of Fig. 2.
'
,
`
Fig. 4 is a sectional view taken on the line 4-4
o-f Fig. 2.
Fig. 5 is a sectional view taken on the line 5-5
of Fig. 2.
Fig. 6 is a sectional view taken on the line Iì-S
of Fig. 2.
Fig. 7 is an exploded View in perspective where
in the housing is detached from the frame, and
the sheath or closure is detached from the hous
ing.
_
Fig. 8 is a perspective view of a part of the ram
or staple driving means.
Fig. 9 is a sectional view taken on the line 9-9
of Fig. 2.
Fig. 10 is a perspective view of the staple sup-_
porting rail.
Fig. 11 is a sectional view taken on the line I I
II of Fig. 1 and
Fig. 12 is a fragmentary perspective view of the
rear end of the pivoted arm.
Illustrative of the embodiment disclosed, the
improved stapling machine is generally designated
S and includes a base I0 to- which is pivoted a
swingable arm having a one piece pivoted frame
II in which an inverted U-shaped staple sup
porting rail I2 is centrally positioned in respect
to the sides I3 of the frame and each of the sides
of the frame includes an inwardly overhanging
flange i4 spaced from the upper wall of the 40
rail I2.
The pivoted frame. II is a one piece member
and is provided at its rear end with a boss I5y
having transverse wall I6 which is integrally
interconnected with the sides I3 of the frame I I. 45
Boss I5 is provided with a reinforced integrally
connected ledge or seat Il having a depending
pin I8 surrounded byv a compression spring I9
which has its lower end encircling upstanding
pin 2l! secured to base I0.
Integrally interconnecting ledge I'I and the
transverse wall I6 is a depending central lug 2|
having a transversely disposed opening 22 dis-V
posed in alinement with the alined openings 23»
of the lugs or ears 24 depending from the sides 55
2
2,136,374
of the rail I2 which has its rear end seated on
ledge I 'I and closely straddles boss I5. In other
words boss I5 and ledge I'I support the rear part
of the rail but boss I5 prevents transverse move
ment of the rail relative to the frame and hence
serves as positioning means to locate the rail
transversely of the frame. In such relation,
alined and spaced openings 23 of the rail are also
located in alinement with opening 22 of the de
pending lug 2I which is integral with transverse
wall I6 and extends forwardly thereof.
The forward part of rail I 2 may also be quickly
and accurately positioned relative to the sides of
the frame for locating the rail longitudinally of
the frame. In this connection it will be observed
that each of the sides of the rail is provided with
a laterally extending lug 25 adapted to be readily
received in a recess 2'I in each of the sides of the
frame. Lugs 26 of the rail fit closely but remov
20 ably with the walls of companion recesses 2'I of
adjacent sides of the frame and conveniently in
terlock therewith. By this arrangement the for
ward end of the rail may be readily positioned in
respect to the frame and located longitudinally
nated 45 to which is vappropriately attached a
driving blade 4l appropriately mounted on ful
crum pin 48 secured to the front wall 49 of U
shaped channeled member 56 to which is rigidly
anchored the outwardly and convexedly curved
head 5I which includes a depending centrally ar~
ranged annular ñange 52 about which the upper
end of a helicoidal spring 53 is retained. This
spring 53 is arranged in a vertical bore 54 of
column 35 which as previously stated is integral
with the one piece frame II. The lower end of
spring 53 however abuts the lower or bottom
horizontal face of bore 54 and normally the
action of the spring 53 is such as to hold plunger
s6 in an elevated or raised position relative to
the frame.
The spaced sides of the U shaped channeled
member 50 are each provided with a marginal but
reentrant recess 55 to form spaced shoulders 5B
and 5l severally cooperating with the transversely
disposed stop or shank 5B of the rivet 59 for limit
ing vertical movement of the plunger in respect
to the frame. As illustrated in Fig. 2, lower
22 of the depending lug 2| are in alinement with
shoulders 5l of the sides of the plunger cooperate
with shank 58 to limit upward displacement of the 25
plunger. This is the normal elevated position
of the plunger. If depressed, upper shoulders 56
cooperate with shank 53 to limit downward dis
placement of the plunger.
the spaced alined opening 28 in the spaced sides
I3 of the frame at their enlarged rear portions‘29
spring 6G having its inner end retained in a
of the frame.
With the rear part of the rail
located transversely of the frame and the for
ward part of the rail located longitudinally of the
frame alined openings 23 of the rail and opening
thereof.
With the rear and front parts of the rail posi
tioned and located in respect to the frame as de
scribed, the sides of the rail are in spaced rela
tion relative to the sides of the frame and the
top of the rail is spaced from the overhanging
guide flanges I4 thus forming a passageway or
channel 33 for slidably guiding the staples 3I of
a staple strip longitudinally of the frame.
Extending upwardly from the sides of the
frame and integral therewith are the spaced
wings 32 which in turn are integrally intercon
nected by an .arcuately shaped transverse closure
wall 33 defining a chamber 34 with the front wall
35 of a rectangularly shaped and vertically dis
posed column 36 at the bottom of which lip 3l
overhangs the front spaced faces 38 of the sides
of the frame. It should be noted that lip 3'I is
integral with column 36 and the spaced flanges
I4 and is provided with a longitudinally disposed
relatively narrow channel 3S defining horizontally
spaced shoulders 40 which form continuations of
the undersurfaces of ñanges I4, the channel 39
serving as relief for the crown of the staple dur
ing its advance under lip 37. Shoulders 4S of the
overhanging lip 31 .are spaced from the upper
horizontal surface of the rail defining therewith
a staple ejecting gap 42 which in effect is the
60 forward part of the passageway 3E. It should
also be noted that the forward inverted U shaped
and flat face 43 of the rail I2 is in the same plane
as the front vertical face 4I of the overhanging
lip 3l and constitutes a bearing for the driving
65 blade of a displaceable ram or plunger hereinafter
more particularly set forth.
Referring now to Fig. ’7, it will be observed that
the side wings 32 of the one piece frame extend
laterally of the sides 43 of column 35 although
70 the latter is centrally disposed in respect to the
frame at the forward end thereof, thus forming
vertical shoulders 44 and the horizontal shoul
ders 45 extending laterally of the sides of column
36. Slidably guided by front and side walls of
75 column 36 is a ram or plunger generally desig
î/'Vithin chamber 313 of the frame is a convolute 30
diametrically disposed slot 5I in the rotatable and
adjustable arbor 52 having its shank sustained in
bearings 63 in the upstanding wings 32 of the
frame. The head 52’ of arbor 62 is disposed in 35
opening 54 while the other slotted end of the
shank is accessible to permit the insertion of a
screw driver to rotate the arbor for adjusting
the tension of the convolute spring as is well
understood.
40
The other end of the convolute spring Gü is
connected to a strap 65 surrounding a cross pin
66 of a slidable U shaped staple follower ß'I which
cooperates with the staple strip in the staple pas
sageway 3€) to urge the foremost staple of the
strip out of the staple ejecting gap 42 at the front
of the frame. With the convolute spring ad
justed to its proper tension, this tension may be
retained by clamping head 58 of the adjustable
set screw S9 which is threadably interconnected r
with opening lû against the head 62’ of the arbor
62 to prevent accidental rotation of the latter.
Embracing the sides of the plunger and the
sides I3 and wings 32 of the forward part of the
frame is a U shaped housing 'i’I which embodies
a front wall l2 and integrally connected rear
wardly extending spaced sides 'I3 each of which
is provided at the lower end thereof with an in
wardly turned lug I4 which closely but removably
ñts into an adjacent recess 2'I of the sides of the 60
frame and engages an outwardly extending lug
25 of the rail I2. With lugs 'I4 interlocked with
recesses 2l and abutting lugs 26, the rail is pre
vented from being downwardly displaced or is po
sitioned in respect to the housing and is there
fore located vertically relative to the frame.
In such located position of the housing -II the
walls of the vertical U shaped channel -I5 de
fined by housing lI and the column 36 serve as
bearing means to slidably guide the self raising 70
plunger or ram 45 although the upper part of
wall l2 of the housing is provided with a groove
“I6 to guide the anchored fulcrum pin 48. By the
present arrangement it will be observed that the
forward vertical face 4I of lip 3'I together with 75
2,136,374
-the rear transverse Vertical face of wall -12- of
the housing serve as bearings for the driving
3
the rear tace of the front wall 12 of the hous
with the curved upper corners of a staple to drive
ing together with the front vertical face 4| of the
overhanging lip 31 serve as bearing surfaces for
the parallel front and rear surfaces Yof the driving
blade 41.
Where the rail is positioned relative to the
the latter downwardly to be ejected out of the
frame, the housing in respect to the latter, and
blade 41 of the plunger 46. This driving blade
is provided with a relatively shallow channel 11
defining corner shoulders 18 which cooperate
frame. The corner shoulders 18 of the driving the sheath in respect to the housing, provided of
blade also cooperate with the corners of a staple course spring 60 has been properly disposed in
1:0
10 to prevent flowing of the corners of the staple
i chamber 34 and the ram or plunger has been lap»
towards the crown thereof during the driving
cpriately mounted on the column, alined’open
displacement of the blade.
ings 94 of the spaced sides of the housing auto
In the assembled relation ‘of the housing and
frame, the forwardly projecting lugs 80 of the matically line up with the transverse bore 95 of
the rectangular column 43, the rectangularly
15 sides of the housing in cooperation with corre
spondingly shaped openings 8| in the U or chan~ shaped openings 96 in the spaced wings 13 of the
neled shaped cover or sheath 82 constitute means
for positioning this sheath in respect to the hous
ing to locate the sheath transversely of the hous
20 ing, that is, lugs 80 fitting into the spaced open
ings 8| also constitute means for interlocking the
housing and sheath to prevent transverse dis
placement of the latter.
In locating the sheath on the housing, the
25 spaced sides 83 are slightly spread apart to
straddle the sides of the housing» and moved in
such fashion that lugs 80 enter into openings 8|.
Further movement of the sheath relative to the
housing and projections 84 struck out of the sides
30 of the sheath snap into openings 85’ in the side
walls cf the housing. With pins 64 interlocked
in openings 85', longitudinal movement of the
sheath relative to the housing or rail is prevented
and since rectangularly shaped lugs 89 closely
35 but removably fit correspondingly shaped open
ings 8| in the sheath the latter is alined or lo
cated vertically of the housing as well as trans
versely thereof.
Having located the sheath of the housing, it
40 will be observed that the front inverted U shaped
face 43 of the rail is properly located or posi
tioned relative to the rear vertical and inner
face 85 of the front wall 86 of sheath 82 so that
the front face 43 of the rail is flush or in aline
45 ment with the vertical or front faces 81 of the
spaced lips 88 struck out of the offset sides 89 of
the sheath due to the limiting action of the
slightly curved or tapered faces 90 of the lips or
projections 88 (Figs. 2, 3 and ‘/).
According to the invention lips 00 are formed
by pressing or extruding the lower portion of off
set walls 89 slightly inwardly, thus forming rela
tively small indentations 92 in the outside sur
face of the offset walls 39 of the sheath 82. By
the present construction, sheath 82, a one piece
member, is provided with a staple raceway 93
formed by the rear face 85 of the front wall 86
and the alined vertical faces 81 of the lips 88
and hence during use it is apparent that since a
60 one piece member defining a raceway is pro
vided relative movement or spreading between the
front and rear faces of the staple raceway 93 is
prevented. Raceway 63 ,may be said to be the
lower part of the raceway 93’ formed by the
05 parallel faces 43 and 85 (Fig. 6). It is also ap
parent that the lips 88 of the sheath properly
locate or centre the rail relative to the frame to
take care of tolerances or other uncontrollable var
iations that might creep in during the process
of stamping various parts of the arm when pins
84 during assembly interlock with the sides of
the housing. These lips 89 also cooperate with
the lower front corners of the rail to prevent the
sides of the rail from spreading.
During displacement of the driving blade _41,
housing line up with rectangularly shaped open
ings 9? of the wings 32 of the frame, opening 98
in one wing of the housing lines up with opening
'ill which receives clamping set screw 68, opening
69 of the housing lines up with bearingß'â in the
wings 32 of the frame, alined openings |00 of
the wings of the housing line up with alined
openings |02 in the sides of the frame and the
alined openings |0| of the housing line up with
the alined openings | 03 in the spaced sides of the
frame.
Continuing withthe assembling steps, pin or
stop 58 is inserted >in the alined openings 94
and bore 95 and upset to form rivet 59. Brace 30
or bar |05 is inserted into openings96 and 91
so that its projection or detent |06 which has
been extruded or struck out therefrom is driven
past an inner surface of an adjacent wing 13
of the housing. Detent |06 cooperates with the 35
adjacent inner surface of the contiguous wing
to prevent withdrawal of the brace. Brace |05
is provided with a notch |01, the walls of which
serve as stop means for nose |08 which is asso
ciated with the staple follower block 61 to limit
forward movement of the latter after the last
staple of the staple strip has been expelled.
Clamping screws |08 are utilized toV hold the
housing in its located position in respect to the
sides of the frame. In this connection the shank
of a set screw |08 is passed through an opening
|0| of the housing and connected to an asso
ciated threaded opening |03 of a contiguous side
I3 of the frame.
The shank 69 of the clamping set screw 68 is
inserted in opening> 98 in the housing and is
clamped against the adjacent head ofl the ad
justable arbor 82 having a slotted end accessible
through opening 99 in an opposite wall of the
housing.
When sheath 82 is snapped into position on
55
the housing, openings ||0 of the sides thereof
are in alinement with the alined openings »|00
and |02 of the housing and frame respectively.
To sustain such position, set screws ||| are em
60
ployed. Each of these have their threaded shanks
passing into opening H0 of the sheath and co
operate with thev companion threaded openings
|00 and |02 of the housing and the frame to
permit clamping of the sides of the sheath 65
against the sides of the housing and the latter
against the frame.
Having assembled the arm, the enlarged rear»
portions 29 of the frame thereof are interposed
between the spaced perforated upstanding lugs
||2 of the base |0-taking in consideration that
spring i8 is. first appropriately arranged about
pins I8 and 20 of the base and arm. Subse
quently fulcrum pin ||3 is passed through alined
openings 2S, 23 and 22 of the frame, rail and 75.
4
2,136,374.
depending lug 2|. Thereafter pin ||3 is upset
said rail for positioning the latter in spaced rela
tion in respect to said sides and transversely of
sustained.
said frame, interlocking means for positioning
With the arm pivotally connected to the base, said rail longitudinally of said frame, and a hous
the plunger may be depressed to drive the staple ing mounted aa the forward part of said frame and
in the staple vertical raceway previously ejected including means cooperating with said interlock
from the staple passageway. This vertical race
ing means for positioning said rail vertically of
way is formed by the rear vertical face 85 of the
said frame.
front wall 86 of sheath 82, the opposing but
2. In a stapling machine, a frame having
parallel face 43 of the rail and front faces 8l . spaced sides, means interconnecting the rear ter
of the lips 88 struck out of the sheath. When minals of said sides comprising a boss, said sides
the blade strikes a staple in the staple raceway at the forward lower portions thereof having re
shoulders 18 thereof abut the corners of the
cesses, a rail having a rear portion adapted to
staple and the legs of the staple are driven closely straddle said boss for positioning said rail
against appropriate indentations of an anvil ||4 transversely of said frame and in spaced relation
to clinch or fasten the paper placed on the anvil
to said sides, and laterally extending overhang
in the customary fashion.
ing means carried by said rail and cooperating
Briefly recapitulating several of the novel steps with said recesses to position said rail longitu
in the matter of assembling the several parts dinally of said frame.
of the swingable staple carrying arm, it is ap
3. In a stapling machine, a frame having
preciated, that the rail is ñrst located trans
spaced sides, a rail interposed between said sides
versely of the frame by slipping the rear end and spaced therefrom to define a longitudinally
of’the rail on the boss l5. Subsequently the
disposed passageway, a member carried by said
rail is located longitudinally of the frame. In sides and having a rear face substantially parallel
this instance lugs 26 of the rail are quickly moved 'to the forward face of said rail to define there- ‘
to form a rivet on which the frame is pivotally
10
15
20
25
into the interlocking recess 21.
In such rela
tion of the rail and frame, openings 23 of the
rail are in alinement with openings 22 of de
pending lug 2| and openings 28 of the sides of
30 the frame.
Pursuant to mounting the plunger 46 on the
column 36 housing '|| is slipped on the forward
part of the frame. Hence lugs '|4 enter recesses
21 and abut fingers 26 of the rail. It follows
that the forward part of the rail is thus pre
40
with a vertically disposed raceway, and means
projecting from said member and closely strad
dling the sides of said rail and having forward
vertical faces spaced from said rear face and
substantially in the same plane as said forward
face of said rail.
4. In a stapling machine, a frame having
spaced sides, a rail interposed between said sides
and spaced therefrom to define a longitudinally
disposed passageway, a member carried by said '
vented from being downwardly displaced. The
rail is therefore located vertically relative to the
sides and having a rear transverse face substan
frame. Consequently the rail is now alined in
three planes in respect to the frame.
said rail to define therewith a vertically dis
posed raceway, means projecting from said mem
The sheath is now moved over the lower for
ward end of the housing. Lugs 88 readily enter
openings 8| in the sheath, hence locating the
latter vertically and transversely of the housing.
The projections 84 snap into openings 85' of
45 the housing and the sheath is positioned longi
tudinally of the housing.
In the located position of the sheath, the de
pending sides of the, rail are closely straddled
by lips 88. These have the additional function
50 of preventing the lower corners of the sides of
the rail from spreading outwardly. Of course
the front vertical faces 81 of the lips 88 are in
alinement or flush with the front inverted U
shaped face 43 of the rail and these faces are
55 substantially parallel to- the rear vertical face
85 of the front wall 86 of the sheath, thus form
ing a vertically disposed raceway 93’ the major
portion of which is deñned by the forward face
43 ofthe rail and rear face 85 of the sheath
60 While the lower or complementary portion 93 of
this raceway is formed by the front faces 8l
and the lower portion of the rear face 85.
As many changes could be made in the herein
disclosed embodiment and many widely different
65 embodiments of this invention could be devised
without departing from the scope thereof, it is
intended that all matter contained in the above
description and shown in the accompanying
drawings shall be interpreted as illustrative and
70 not in a limiting sense.
I claim:1. In a stapling machine, a frame having
spaced sides, a U shaped rail interposed between
said sides longitudinally of said frame, means at
75 the rear of the frame adapted to be straddled by
tially parallel to the forward transverse face of
ber and having forward transversely disposed
vertical faces spaced from said rear face and sub
stantially in the same plane as said forward face
of said rail, said projecting means straddling and
cooperating with spaced lower portions of said
rail to prevent transverse displacement of said
portions relative to said sides.
5. In a stapling machine, a one piece frame
having at its forward end a vertically disposed
column and an overhanging lip, a housing mount
ed on said frame in, spaced relation to said lip and
said column, driving means having a channel
shaped element interposed between said housing
and said column and slidably guided thereby, a
blade carried by said driving means, a member
mounted on said housing and having a surface ,
spaced from the forward face of said lip and de
fining therewith bearing means to slidably guide
said blade, and means cooperating with said ele
ment to limit displacement of said driving means
relative to said frame.
6. In a stapling machine, a one piece frame
having at its forward end a vertically disposed
column and an overhanging lip, a housing mount
ed on said frame in spaced relation to said lip
and said column, driving means including a chan
nel shaped elementJ interposed between said hous
ing and said column and slidably guided thereby,
a blade carried by said driving means, and a
member mounted on said housing and having a
surface spaced from the forward face of said lip
and deñning therewith bearing means to slidably
guide said blade, transversely disposed stop means
interconnecting said column and housing, means
disposed in said column and cooperating with said
driving means to hold the latter elevated, said
5
2,136,374
element having means cooperating with said stop
ating with said recesses to position said rail 1on
means to limit vertical displacement of said blade
relative to said column.
7. In a stapling machine, a frame having
spaced sides, a rail spaced from said sides, -a
housing mounted on said frame and having for
gitudinally of said frame, and a housing mounted» '
wardly disposed spaced lugs, and a sheath mount
ed on said housing and having means for receiv
ing said lugs to locate said sheath relative to
said housing.
8. In a stapling machine, a frame having
spaced sides, a rail spaced from said sides, a
housing straddling said frame, a sheath mounted
on said housing, interlocking means for locating
said sheath transversely of said- housing, and
spaced lugs adapted to sustain said iirst men
tioned lugs for positioning said rail vertically of
. said frame.
'
14. In a stapling machine, -a frame having
spaced sides, a staple supporting rail spaced from .
said sides, a housing straddling said frame and 10
including means adapted tointerlock with said
sides and the sides of said rail, said housing hav
ing forwardly extending lugs, a sheath defining
with said rail a vertically disposed staple race
Way and mounted on said housing and having 15
detent and indent locking means for locating said
openings for removably interlocking with said
sheath longitudinally7 of said housing.
lugs to prevent vertical and transverse displace
ment of said sheath relative to said housing, and
_means carried by said sheath adapted to interlock
with said housing to prevent longitudinal dis 20
placement of said sheath relative to said housing.
9. In a stapling machine, a frame having
‘spaced sides, a staple supporting rail spaced from
20 said sides, a housing closely straddling said frame
and including means adapted to interlock with
said sides and the sides of said rail, said housing
having forwardly extending lugs, a sheath mount
ed on said housing and having openings for re
25 movably interlocking with said lugs to prevent
vertical and transverse displacement of said
sheath relative to said' housing, and means carried
by said sheath adapted tointerlock with said
housing to prevent longitudinal displacement of
30 said sheath relative to said housing.
10. In a stapling machine, a member having a
wall, means integral therewith and extending
from lower portions only of said wall to define
a vertically disposed staple raceway, and a rail
closely straddled by said means integral with
said wall to prevent spreading of the sides of
said rail. -
11. In a stapling machine, a frame having
spaced sides including alined recesses at the for
40
at the forward part of said frame and including
inwardly extending transversely alined but
ward portions thereof, a staple supporting rail
interposed between said sides, means at the rear
of said frame to position said rail in spaced rela'
tion to said sides, said rail having laterally ex
tending lugs cooperating with said recesses to
position said rail longitudinally of said frame,
45
and a housing mounted at the forward part of
said frame and including projecting means adapt
ed to engage said lugs for positioning said rail
vertically of said frame,
15. In a stapling machine, a frame having ~
spaced sides, a column integral with- said frameL
driving means slidable relative tosaid column, a
staple supporting rail spaced from said sides, a
housing having spaced sides- closely straddling
Y said frame and including means adapted to inter- .
lock with the sides of said frame, and the sides
of said rail, said housing having forwardly ex
tending lugs, a U-shaped sheath mounted on said 30
housing and having openings for removably in
terlocking with said lugs to prevent vertical and
transverse displacement of said sheath relative to
said housing,` and detent means carried by said
-sheath adapted to interlock with said housing to 35
prevent longitudinal displacement of said sheath
relative to said housing.
~ 16. In a stapling machine, a frame having
spaced sides, a staple supporting rail spaced from
said sides, a U-shaped housing closely straddling
said frame and including means adapted to inter
lock with said sides, said housing having for
wardly extending lugs, a sheath mounted on said
housing and having openings for removably in
terlocking with said lugsto prevent vertical and 45
transverse displacement of said sheath relative
to said housing, said sheath having struck out
means spaced from a wall of said sheath and de
fining therewith a staplevraceway, means carried
12. In a stapling machine, a frame having
-by said sheath adapted to interlock with said
ward portions thereof, a staple supportingvr rail
yinterposed between said sides, projecting means
said sheath relativeV to said housing, and driving
means for ejecting a staple from said raceway.
17. In a stapling machine, a frame having
50 spaced sides including alined recesses at the for
' at the rear of said frame to position vsaid rail in
housing to prevent longitudinal displacement of 50
spaced relation to said sides, said rail having out-~ ` spaced sides including alined recesses at the for
ward portions thereof, a staple supporting rail
cesses to position said rail longitudinally of said interposed between said sides, means at the rear
frame, and a housing mounted at the forward of said frame tonposition said rail in spaced rela
part of said frame and including inwardly ex
tion to said sides, said rail having laterally ex
tending projecting means adapted to sustain said tending lugs cooperating with said recesses to 60
60
lugs for positioning said rail vertically of said position said rail longitudinally of saidy frame, and a housing mounted at the forward part of
frame.
13. In a stapling machine, a frame having said frame and including projecting means
spaced sides including transversely alined re
adapted to interlock with'the walls of said re
_cesses to position said housing relative to said
cesses at the forward portions thereof, a U
55 wardly extending lugs cooperating with said re
65
shaped staple supporting rail interposed between ` frame, said projecting means constituting means
said sides, means at the rear of said frame to f to support said lugs to prevent downward dis
position said rail in spaced relation to saidsides, placement of the forward part of said rail.
said rail having laterally extending lugs cooper
STEPHEN A. CROSBY.
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