close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2412620

код для вставки
Dec. 17, 1946.
C- P- KIPP
TACKER'
Filed April 29, 1943
I lIII"
'
'
2,412,620
'
4 Sheets-sheet 1
I"
ATTORNEY
~
DE?» 17, 1948. '
c, P, K|Pp
' 2,412,620
TACKER
Filed April 29, 1943
4 Sheets-Sheet 2
lllllllllll' ,
j
Y
A
'87-
42
45 ,4 ,5’6
57
14 .15.
5&60
-/
5396,39
I
INVENTOI'R
BY
7
'
.
a,"
ATTORNEY
'
Dec. 17,1946.
c. P. KIPP
Q
2,412,620
I
TACKER
Filed April ,29, 1945
4 shegts-sheét 4
65
42
3
NVENTOR
-
m
ATTORNEY
2,412,620
Patented Dec. 17, 1946
UNITED. STATES PATENT OFFICE
2,412,620
TACKER
Calvin P. Kipp, Douglaston, N. Y.
Application April 29, 1943, Serial No. 485,044
29 Claims. (01. 1\—49)
1
2
being dependent upon the uncontrollable varia
The present invention is concerned with sta
pling 0r tacking devices and especially is directed
to a staple tacker for securing a member such
tions' in length of the shock absorbing or cush
ioning means in taking up the impact of the ram.
as cardboard, paper, cloth or the like onto a
By the present invention these dif?culties have
suitable material which may vary in resistance, On been overcome in the matter of controlling the
projection of the driving blade out of the tacker
for example, the material may be of wood, com
during tacking operations irrespective of the
position or press board, and/or the like relatively
grade of resistance of the material into which
soft or hard in structure or vary in resistance
the staple is driven and irrespective of even vari
between soft and hard. In tackers of the prior
art, one of the chief problems is to provide a suit 10 ations in length of the shock absorbing spring
means due to uncontrollable tolerances. Thus an
able stapling machine for properly tacking into
object of the invention is to provide a novel and
grades of materials of varying resistances with
serviceable staple tacker having means for con
out either spoiling the material or fracturing
the frame of the tacking machine or the operat
trolling the projection of the staple driving blade
out of the tacker even though the ejected staple
be driven into various resistant grades of mate
ing parts thereof. As is well known tacking ma
' chines of the type alluded to do not employ an
external staple clinching anvil and hence the
staple driving blade of the staple driving means
or ram thus must be projected out of the tack
ing machine to drive the staple into the material ‘
to be stapled. Where the material is soft, it
offers small resistance and the staple may be
over driven into the material and thus spoil the
latter due to an excessive projection of the driv
ing blade out of the tacker. In case the material is relatively hard appreciable resistance isv
offered to the driving blade and consequently
the driven staple will be ineifectively tacked due
to an inadequate projection of the driving blade.
In practice it has been extremely difficult to reg
ulate the proper impact of the blade of the staple
driving means against the driven staple for ef
fective tacking. Usually retarding means to in
terrupt the momentum of the ram was resorted
to in the attempt to solve the problem. Such
retarding means usually took the form of impact
absorbing devices such as leather or rubber wash
ers or shock absorbing springs.
However even
though such shock absorbing devices and Wash
rials. Another object of the invention is to pro
vide means to prevent shattering of parts of the
tacker in the utilization of multiple shock or im
pact absorbing means in the matter of effectively
interrupting the momentum of the ram or staple
driving means several times during its staple
driving stroke. The invention further contem
-
plates as an object the provision of bumper means
for absorbing the residual momentum of the ram
following successive interruptions thereof during
its staple driving stroke. Further objects are
concerned with a slidable plunger for impacting
a ?xed anvil against the resistance of a com-'-v
pressed spring prevented against solid compres
sion by ?oat means acting as a successive inter
rupter for slowing down the velocity of the ram
towards the termination of the staple driving
stroke in conjunction with an impact distributing
member acting against an elastic or resilient de
formable bumper confined in the ram for ab
sorbing the residual velocity thereof. Other ob
jects, aspects, and functional and structural fea
tures of the invention will appear from the_fol
ers were resorted to fracture of the frame of the 40 lowing detailed description considered in connec
tion with the accompanying drawings wherein:
tacker or operating parts thereof would at times
_ Fig. 1 is a perspective view of the tacker or
ensue. Where the shock absorbing devices char
stapling machine according to my’ invention, il
acterized relatively stiff helical spring means an
lustrating the swingable cover closed.
other difficulty arose due to the uncontrollable
Fig. 2 is a perspective View of the tacker show
tolerances in the lengths thereof and although 45
ing the pivoted cover or hood partly opened.
such tolerances are fairly small, nevertheless in
practice they have proved adequately great as a
Fig. 3 is a longitudinal sectional view in ele
vitally serious cause for fracture of some parts of
vation of Fig. 1.
Fig. 4 is a fragmentary view of Fig. 3 showing
the tacker. One problem to be overcome there
fore was to eliminate over projection of the driv 50 the handle for operating the ram or driver de
ing blade out of the tacker and at the same time
pressed and the ram moving towards the com
overcome the disturbed conditions caused by the
pletion of its upward stroke with the slidable
sudden impact of the ram during its staple driv
plunger of the ram appreciably spaced from the
ing stroke and without however causing fracture
?xed impact receiving anvil or abutment car
of any parts of the tacker and without however 55 ried by the sides of the cover.
2,412,620
.4
3
pivotally depressed due to the thrust imparted
Fig. 5 illustrates the slidable ram receiving its
?rst interruption on its downward stroke at a
time when the slidable plunger has just struck
the ?xed impact receiving anvil or transverse
stop at which time the staple driving blade of
the slidable ram is flush with the lower end of
to the roller.
Where the handle H is depressed and manual
pressure is removed therefrom, spring I8 auto
matically raises lever l0, hence roller 23 auto
matically raises the pivoted handle H thus caus
the magazine.
ing the hollow and depressed guard to straddle
Fig. 6 is a view similar to Fig. 5 but with the
ram at its successive interruption at which time
the upper part of the case as in Fig. 1.
Normally the forward lip 25 of the pivoted
the retained float impacts the impact distribut 10 and spring controlled pawl I3 is within recess
26 (Fig. 3) of the ram or staple driving means
ing member for compressing the hollow rubber
bumper.
D which is slidably guided in the U shaped sheath
Fig. 7 illustrates the ram towards the com—
pletion of the downward stroke at which time
the bumper is compressed.
Fig. 8 is an exploded perspective view of the
8 and particularly between the front wall ‘I
and sides 8 of‘ the sheath and the spaced rec
tilinear faces 28 of the spaced sides 9 of case B,
the ram including the hollow rectangularly
shaped body 29 embodying the aforementioned
ram or staple drivingr means.
recess 26 and having ?xed thereto the staple
Fig. 4.
driving blade 36 and having the vertically ar
Fig. 10 is a sectional view on the line Ill-l0 20 ranged cylindrical bore 3! in which is inserted
of Fig. 4.
the hollow and cylindrical rubber bumper or
cushion 32, the impact distributing metal disc
Fig. 11 is a vertical but transverse sectional
the helicoidal shock absorbing or cushion
view of the frame of the cover on the line I l-H
of Fig. 4.
spring 365, the impact applying slidable cylin
Fig. 12 is a sectional View on the line |2—l2 25 drical plunger 35, and the cylindrical metal
of Fig. 4.
?oat or pin 60.
The plunger 35 is slidably guided in bore 31
Fig. 13 is a perspective View of the tacker
illustrating the cover swung rearwardly beyond
and is limited in its rectilinear downward dis
placement by a pin 36 ?xed in any appropriate
‘ninety degrees relative to the open top magazine
at which time the staple follower is at the rear 30 fashion to the staple driving blade and the body
of the magazine.
29 of the ram and projects through the guide
opening or slot 37 of the plunger 35 movably
Fig. 14 is a perspective and exploded view of
guided in bore 3|.
the forward part of the tacker and particularly
By the present arrangement the shock absorb
of the telescopic and ?xed guide in the rail to
ing spring 34 is held adequately compressed but
prevent buckling of a driven staple as it is pass
ing through the staple raceway or guideway, and
not closed in the bore of the ram to normally po~
sition the slidable plunger 35 against the stop
Fig. 15 is an enlarged sectional view on the
line [5-45 of Fig. 5.
pin 36 and the disc 33 against the rubber
cushion 32.
According to the invention, the staple driving
A helicoidal power spring 38 con?ned Within
means or ram, broadly denoted D, is appropriately
slidably guided in the sheet metal U shaped
the sheath S and the laminated head therefor
characterized by the juxtapositioned plates 39
sheath S of the swingable hollow cover C having
held together by rivets 39' and anchored to the
its sheet metal case or hollow rear part R pivoted
sheath ‘S by rivet 40 and fulcrum pin 20, nor
on the slidable fulcrum pin P carried by the staple
magazine M straddling and telescopically receiv 45 mally holds the ram depressed (Fig. 3) at which
time slidable plunger 35 which in part projects
ing the sides 9 of the case R.
from the body of the ram is yieldingly against
Lever or arm I!) for raising the ram is pivoted
the ?xed impact receiving anvil or abutment
on the ?xed fulcrum pin II which secures the
plate or stop 4! extending transversely of the
sides 9 of the case B and the spaced sides 8
Fig. 9 is a sectional view on the line 9-9 of
of the sheath S of the cover together.
} 50
Pivotally mounted on fulcrum pin l2 carried
by the pivoted lever or arm I0 is the pawl l3
having its stops Ill normally held against the
sheath and appropriately ?xedly anchored to the
sides 8 thereof.
Within the magazine M is a ?xed staple rail
42 for slidably supporting staples 43 which are
urged towards a staple raceway or guideway 44
in alinement with the driving blade 30 of the
ram by a slidable staple channel-shaped follower
sides of arm in by spring l5 having its forward
end abutting the forward end 25 of the pawl as
shown in Fig. 3, its intermediate portion I6 is
45 to which is fastened one leg 46 of a helicoidal
coiled about fulcrum pin l2 and its rear portion
extension spring 4'! looped over an anti-friction
I1 anchored to the lever I9.
grooved roller 48 and having its upper leg 49
Normally lever I0 is held in a raised position
by reason of the spring I8 having its upper end 60 positioned in a grooved guide 50 and extended
upwardly and forwardly to be anchored to book
l9 continuously abutting the upper end of lever
52 struck inwardly of the case R of the cover.
Ill, its intermediate portion 19’ is wound about
By reason of the fact that the cover is pivoted
the transverse fulcrum pin H and its lower leg
to the magazine, the cover may be swung away
19" is anchored to the case R of the cover.
from the magazine to assume an angle beyond
The outside manipulatable handle H for op
ninety
degrees therewith until the rear end 52
erating lever in downwardly is pivoted on ful
of the curved rear top of the case R strikes the
crum pin 29 traversing the sheath S and is
rear end or stop 53 of the straddling saddle 54
straddled by and bodily carries the hollow pro
slidable transversely of the case since the up
tective guard G having its sides 2| ?xedly secured
standing sides 54’ of the saddle are secured to
to the operating lever handle H by rivets 22 and
the slidable fulcrum pin P. During rearward
rotatably sustained on the fulcrum pin 29-.
swinging movement of the cover staple follower
The inside lever or arm l0 carries the anti
I55 slides rearwardly due to the action of spring
friction roller 23 held near the operating handle
4‘! until it reaches stop 55 or the rear wall (Fig.
H and when the latter is depressed lever IQ is
3) of the magazine. Thus full access may be
2,412,620
5
it has been discovered that the staple driving
had to the rail except that portion thereof un
means or ram in its down stroke musthave its
der the follower which is prevented from up
velocity successively interrupted to slow it down
ward displacement by the inwardly turned lugs
appreciably before bringing the staple driving
56 of the follower moving in the retaining slots
51 between the rail and the magazine. In clos Cl means to a sudden and ?nal stop which takes
place only when the staple has been fully driven
ing of the ‘cover, the follower automatically
into the material to be stapled. By such ac
moves forwardly by reason of spring 41 to urge
tion the blade of the staple driving means would
the foremost stable to enter the raceway or
not be projected in excess of the desired and rel
guideway under the driving blade 39 as is well
understood.
,
v10 atively slight blade extension beyond the race
way in effectively driving the staple into the ma
In Fig. 3, the tacker is closed and the blade 30
terial.
of the staple driving means D is substantially
With the present construction even though a
?ush with the bottom wall of the magazine at
relatively stiffer power spring is employed, thus
which time the slidable plunger 35 is seated on
the ?xed transverse metal stop or abutment :15 obtaining a much greater impact of the plunger
against the anvil, it is possible to cushion this
bridge 4| and the power spring 38 holds the
blow in utilizing a relatively weaker or softer
metal slidable plunger 35 yieldingly against the
cushion or shock absorbing spring. The present
stop. Thus the staple driver or driving means
ratio of maximum loads ‘being substantially thirty
is held normally depressed by the expanded
power spring 38 which becomes contracted as .20 one pounds for the shock absorbing spring to
forty pounds for the power spring whereas
the driver or ram D is drawn upwardly by pawl
hitherto such ratio was substantially forty-two
l3 when handle H is depressed. It should be
pounds for the cushion spring to thirty-two
realized that the power spring 38 is of less stiff
pounds for the power spring.
ness than the helicoidal shock absorbing or
Hence according to the present invention a
cushion spring 34 which is con?ned in the slid
relatively stiffer power spring is utilized, but
able driver for normally urging the slidable
which is relatively greater in stiffness than the
plunger 35 downwardly.
cushion spring 34 substantially in ratio above
Where a relatively stiff cushion or shock'ab
outlined and although a relatively softer cushion
sorbing spring is utilized‘certain problems arise
spring be employed e?ectiveness of such spring
due to uncontrollable irregularities in the free
is independent of its tolerances since means is
length of this spring. and such problems arise
provided to prevent solid compression thereof,
even due to small tolerances of plus or minus
one thirty-second of an inch. Such positive or
and lastly the ?nal impact of the ram 01'. staple
driving means on its down stroke following prior
interruptions of the ram is taken care of or ab
negative variations caused in actual practice a
possible total variation of one sixteenth of an
sorbed by supplementary cushioning means in the
inch in linear de?ection of the cushion spring.
Since the linear working de?ection of the cush
ion spring relied on is also approximately to the
form of an impact distributing member and the
resilient bumper of adequate wall thickness or
depth and this bumper becomes deformed at this
order of one sixteenth of an inch, this would
result in approximately one hundred percent 40 time and during this action the staple driving
blade is projected further out of the magazine to
variation in linear working de?ection of this
completely drive the staple into the desired ma
spring since as previously stated approximately
terial. In this connection it will be observed that
one sixteenth of an inch 01' less in linear de
the cylindrical pin or ?oat 66 is mounted within
?ection of this cushion spring is relied on in
actual practice. Therefore where the tolerance is the cushion or shock absorbing spring 3% and is
positioned by the latter although it is of a length
is negative, practically no linear working de?ec
less than this spring (Figs. 3 and 5). By such
tion is available and this would in some instances
arrangement although the cushion, spring is at
cause the cushion spring to compress solid in
all times partially compressed and becomes fur
that it is now slightly weaker, thus transferring
ther compressed on the down stroke of the ram,
it never will be compressed solid, namely, to per
the full impact of the plunger on the transverse
anvil or abutment stop 4| which impact in turn
was transferred to the metal sheath of the tacker
frame resulting in either fracture of the sheath
or the fracture of the compression spring itself.
mit its superimposed convolutions to contact one
another, in that the ?oat serves as means to pre
In case where the linear de?ection became .
relatively great, due to an uncontrollable posi
tive tolerance, this spring although prevented
from solid compression was proportionately but
undesirably stiffer o?ering needlessly greater re»
sistance, thus providing less cushioning or ab
sorptive effect, and in practice such type of
ill)
stiffer spring would snap or fracture upon im
pact of the plunger against the ?xed anvil or
in some instances would result in the fracture
of the frame of the tacker, that is, either the
sheath and/ or case thereof.
Consequently variations in linear de?ection
due to even small plus or minus tolerances of
the cushion spring are thus an important factor
in the matter of providing an effective operating -'
tacking machine since direct cause for fracture
was traceable to such uncontrolled tolerances.
To overcome such factors in adequately absorb
vent total or solid compression.
Again assuming that the driver is at the top of
its stroke (Fig. 4) and the pivotal pawl [3 has
just tripped, the power spring expands and im-,
parts a velocity to the ram or staple driving
means, thus moving the latter downwardly. This
velocity increases until interrupted by the‘ impact
of the slidable plunger 35 on the ?xed transverse
metal stop or anvil 4! secured to the sides 8 of
the sheath. In this case it is assumed that the
ram is operating idly and thev tacker is empty of
staples. At the instant of such impact or ?rst
interruption of the ram to slow it down the lower
end of the driving blade 30 is approximately ?ush
with the bottom wall of the magazine.
Pursuant to this ?rst interruption of the ram,
the latter although slowed down, nevertheless,
continues to move downwardly due to its momen
tum or inertia. Thus two factors now exist:
one, the lower end of the blade 30 is progressively
ing the impact of the plunger against the ?xed
projected out of the magazine, and two, the slida
anvil or stop bridging the sides of the sheath, 75 ble plunger 35 is moved relatively inwardly of
2,412,620
7
8
.the ram D to compress the cushion spring 34'but
not solid in that the ?oat or pin 60 has struck
Saddle 54 is slidable transversely of the mag
azine and serves as means for stabilizing the
tacker when placed adjacent a wall or in corners
or diaphragm 33, or in other words the ram re
for easy access thereto and the rear grooved roller
ceives its second interruption (Fig. 6) in which 5 50 is rotatably mounted on pin Bl ?xed to the
instant the cushion spring is prevented from fur
spaced sides 9 of the hollow case C which to
the impact receiving and distributing metal disc
ther compression although the blade is slightly
extended about one sixty-fourth of an inch be
gether with the U-shaped sheath S characterizes
the frame or cover of the tacker, the marginal
yond the magazine but insufficiently projecting
portions 62 of sides 9 (Figs. 11 and 13) being
to complete driving of the staple into the ma 10 removably and closely received by the spaced
terial. Although the ram has received its second
interruption upon coaction of the float 6!! against
lower faces 64 of the sheath striking stop faces
the impact distributing disc 33 and is almost
65 of the spaced sides of the magazine.
sides 63 of the magazine until limited by the
Thus
abruptly stopped, nevertheless it still has residual
the cover when closed is positioned relative to
momentum, thus continuing its downward stroke 15 the magazine and the lower margins 62 of the
until its velocity is substantially zero, conse
case preclude upward displacement of the staples
quently the lower end of the blade is further pro
and depending lug 66 removably ?ts into position
jected (Fig. 7) out of the magazine and by such
notch 61 to more properly position the front part
projection the staple formerly in the raceway is
of the cover in respect to the magazine for con
completely driven into the material. However it
is important to realize that following second in
terruption and during the exhaust of the residual
momentum of.the ram the impact on the slidably
guided disc 33 is transmitted to the hollow and
cylindrical rubber or resilient bumper 32 causing 25
trolling the alinement of blade 30 with the staple
driveway.
Projecting laterally of the sides 9 of the frame
or pivoted cover is the actuator pin 68 movably
guided in alined and arcuate slots 59. This pin
carries the front roller 48 and is adapted to
the latter to become slightlyattenuated that is,
operate the pivoted yoke ‘lb rotatably suspended
thinner as to height and deformed (Fig. 7) and
upon exhaustion of the residual momentum of
the ram the staple ejected is completely driven
into the material, the velocity of the rain is almost
zero, the bumper is under compression and at
from the ?xed fulcrum pin ‘H held by the spaced
sides 9 of the case R. Spring 41 normally acts
against roller 48 to hold or urge the pivoted
yoke rearwardly causing the free portions or ends
of the actuator pin 68 to be received and inter
locked with the alined notches T2 in the wings
or keeper means ‘I3 of the magazines. By this
arrangement the actuator pin 68 automatically
tenuated that is, thinner as to height, the com
pression spring is under greater compression than
normal although not solidly compressed due to
the interrupting control of the impact applying 35 interlocks with the magazine on completion of _
pin or ?oat 6D, and the slidable plunger 35 has
its closing stroke. To unlock the cover, the pin
reached substantially the limit of its inward
68 is manually shifted forwardly thus causing
stroke into the ram (Fig. 7) at which time the
yoke or supporting means 10 to pivot forwardly
blade extension is substantially maximum to the
against the resistance of spring Ill and there
order of approximately one thirty-second of an
inch. By this action the driving blade is pre
vented from protruding an undue amount beyond
the magazine, ?rst by interrupting the ram by
the coaction of the slidable plunger and the ?xed
abutment, and secondly, by the combined- total
compression of the cushion spring and bumper
taking into consideration of course that maxi
mum blade extension varies in accordance with
after the cover may be swung away from the
magazine.
To prevent buckling of the staple, the forward
end of rail 42 (Fig. 14) is permanently secured
on the inverted U shaped insert 83 having its
front faces of the lower lateral ?anges 8| serv
ing as extensions for the front face of the rail
while the side faces 82 are merely positioned
against the inner sides of the magazine. In
this way rearward tilting of the staple is com
the strength of the power spring, if the staple
driving means is idly operated and where it is not 50 pletely prevented.
idly operated varies in accordance with this power
The upper portions of the laminations 39 also
embody alined projections 85 disposed in posi
spring and the resistance of the material into
which the staple is driven.
tioning opening 86 in the front wall of the
magazine to properly aline the laminations rel
Since the staple has been completely driven
into the material as desired, shock absorbing or
cushion spring 34 and rubber bumper now re
coil or expand, thus automatically raising the
ram against the resistance of the power spring
38, hence appreciably projecting the slidable
plunger 35 out of the ram. During this time
the blade of the driving means is again drawn
upwardly to be substantially ?ush with the lower
wall of the magazine and during such upward
movement the rain again becomes interlocked
with the pivoted pawl H! as shown in Fig. 3.
Where a staple is driven out of the magazine
for tacking, the ram during its downward move
ment is slightly interrupted when the blade starts
to drive the ejected staple into the material into
which the staple is to be driven. This interrup
ative to the power spring and ram in the sheath
which has its sides provided with spaced and
alined ribs 81 for positioning the power spring
and for reinforcing the sheath.
The case R is provided with the enlarged
central opening 88 in which is positioned a rub
ber loop 89 in any suitable manner. This loop
apart from being convenient to grasp is also
readily accessible. It should be observed that
in use the slidable plunger 35 of the driving
means or ram never strikes the lower part of
stop pin 36, there being adequate clearance
between this stop and the plunger when latter
is at its innermost position within the ram
(Fig. 7).
By the present invention it is apparent that
tion however is casual or very slight and in
a novel method and practical structure have been
effective to appreciably slow down the ram, which
is caused by the impact of the plunger against
the anvil or abutment and by the impact of the
float 60 against the disc or diaphragm 33.
provided in the matter of effectively driving
staples into material of Various resistance.
While the invention has been described in
detailand reference has been made to a speci?c
2,412,620
application thereof, it is to be understood that
the invention herein disclosed is not limited to
such speci?c applications and it is intended that
10
raceway, reciprocable driving means including a
blade projectible into and out of said raceway
and comprising a slidably guided plunger, heli
coidal shock absorbing spring means, impact dis
all matter contained in the above description or
shown in the accompanying drawings shall be
interpreted as illustrative and not in a limiting
tributing means and resilient bumper means;
helicoidal power spring means acting on said
sense.
driving means, means for slidably guiding said
driving means and blade, means for raising said
driving means against the resistance of said
having a raceway, a spring controlled follower 10 power spring means, ?xed abutment means to
receive the impact of said plunger on the down
in said magazine for shifting a staple into said
ward stroke of said driving means to interrupt
raceway, reciprocable driving means including
said downward stroke, and pin means within but
a blade projectible into and out of said raceway
of a length less than said shock absorbing spring
and comprising a slidably guided plunger, shock
absorbing spring means, impact distributing 15 means for coacting with said distributing means
towards the completion of said downward stroke
means and resilient bumper means; power spring
to further interrupt said downward stroke and
means acting on said driving means, means for
I claim:
1. In combination, a staple holding magazine
slidably guiding said driving means and, blade,
for concomitantly precluding solid compression
of said shock absorbing spring means and stress
means for raising said driving means against the
resistance of said power spring means, ?xed abut 20 ing said bumper means.
5. In combination, a staple holding magazine
ment means to receive the impact of said plunger
having a raceway, a spring controlled follower in
on the downward stroke of said driving means to
said magazine for shifting a staple into said
interrupt said downward stroke, and means co
raceway, reciprocable driving means having a
acting with said distributing means towards the
completion of said downward stroke to prevent 25 body and a blade secured to said body projectible
into and out of said raceway and comprising a
solid compression of said shock absorbing spring
slidably guided plunger, helicoidal shock absorb
means and to further interrupt said downward
ing spring means for urging said plunger in a
stroke and for stressing said bumper means.
direction out of said body, impact distributing
2. In combination, a staple holding magazine
having a raceway, a spring controlled slidable 30 means, and resilient bumper means; helicoidal
power spring means acting on said driving means,
follower in said magazine for shifting a staple
means for slidably guiding said driving means
into said raceway, reciprocable driving means in
and blade, means for raising said driving means
cluding a blade projectible into and out of said
raceway and comprising a slidably guided plung
er, helicoidal shock absorbing spring means, im
pact distributing means and resilient bumper
means; helicoidal power spring means acting on
said driving means, means for slidably guiding
said driving means and blade, pivoted means for
raising said driving means against the resist
ance of said power spring means, ?xed abutment
means to receive the impact of said plunger on
the downward stroke of said driving means to
interrupt said downward stroke, and means with
in said driving means and of a height less than
said shock absorbing spring means for coacting
with said distributing means towards the com
pletion of said downward stroke to further in
terrupt said downward stroke and for stressing
said bumper means.
_
3. In combination, a staple holding magazine
having a raceway, a spring controlled slidable
against the resistance of said power spring means,
?xed abutment means to receive the impact of
said plunger on the downward stroke of said
driving means to interrupt said downward stroke
whereupon said plunger is displaced in a direc
tion inwardly of said body against the resistance
of said shock absorbing spring means at which
time the lower end of said blade is substantially
flush with the bottom wall of said magazine, and
pin means within said shock absorbing spring
means and coacting with said distributing means
towards the completion of said downward stroke
to further interrupt said downward stroke and
to compress said bumper means and to limit com
pression of said shock absorbing spring means.
6. In combination, a staple holding magazine
50 having a raceway, a spring controlled follower in
said magazine for shifting a staple into said race
way, reciprocable driving means having a body
and a blade secured to said body projectible into
and out of said raceway and comprising a slid
follower in said magazine for shifting a staple
into said raceway, reciprocable driving means
including a blade projectible into and out of said 55 ably guided plunger, helicoidal partially com
raceway and comprising a slidably guided plung
pressed shock absorbing spring means for urg
er, helicoidal shock absorbing spring means, im
ing said plunger in a direction out of said body,
pact distributing means and resilient bumper
impact distributing means and resilient bumper
means; helicoidal power spring means acting on
means; helicoidal power spring means acting on
said driving means, means for slidably guiding 60 said driving means, means for slidably guiding
said driving means and blade, manually con
said driving means and blade, means for rais-J
trolled pivoted means for raising said driving
ing said driving means against the resistance of
means against the resistance of said power spring
means, ?xed abutment means to receive the im
_ said power spring means, ?xed abutment means
to receive the impact of said plunger on the down
part of said plunger on the downward stroke
ward stroke of said driving means to interrupt
of said driving means to interrupt said downward
said downward stroke whereupon said plunger is
displaced in a direction inwardly of said body
stroke, and pin means within but of a height less
than said shock absorbing spring means for co
against the resistance of said shock absorbing
acting with said distributing means towards the
spring means at which time the lower end of
completion of said downward stroke to further 70 said blade is substantially ?ush with the bottom
interrupt said downward stroke and for stressing
wall of said magazine, and pin means within
said bumper means.
said shock absorbing spring means and coacting
4. In combination, a staple holding magazine
with said distributing means towards the com
having a raceway, a spring controlled follower
pletion of said downward stroke to further in
in said magazine for shifting a staple into said 75 terrupt said downward stroke and to compress
2,412,620
11
12
said bumper means and to limit predetermined
compression of said shock absorbing spring
pin means within said shock absorbing spring
means and coacting with said distributing mem
means, said driving means pursuant to said pre
determined compression of said shock absorbing
ber towards the completion of said downward
stroke to further interrupt said downward stroke
spring means continuing slightly downwardly to
and to compress said bumper and to limit com
pression of said shock absorbing spring means.
9. In combination, a staple holding magazine
project said blade a slight distance beyond said
bottom wall to complete said down stroke dur
ing compression of said bumper means.
'7. In combination, a staple holding magazine
having a raceway, a spring controlled follower in
said magazine for shifting a staple into said race
having a raceway, a spring controlled follower 10 way, reciprocable driving means having a body
in said magazine for shifting a staple into said
including a bore and a blade secured to said body
raceway, reciprocable driving means having a
projectible into and out of said raceway and
comprising a plunger guided in said bore and in
body and a blade secured to said body projectible
into and out of said raceway and comprising a
part projecting outwardly therefrom and includ
slidably guided plunger, helicoidal partially com 15 ing an opening substantially normal to said bore,
pressed shock absorbing spring means for urging
a stop carried by said body and extending across
said opening to limit projection of said plunger
said plunger in a direction out of said body, im
pact distributing means and resilient bumper
out of said bore, helicoidal shock absorbing spring
means; helicoidal power spring means acting on
means for urging said plunger in a direction out
said driving means, means for slidably guiding 20 of said bore, a hollow resilient rubber bumper at
said driving means and blade, means for raising
one end of said bore, a relatively thin disc seated
said driving means against the resistance of said
against said bumper by said shock absorbing
power spring means, ?xed abutment means to
spring means, helicoidal power spring means act
receive the impact of said plunger on the down
ing on said driving means, means for slidably
ward stroke of said driving means to interrupt
guidinCr said driving means and blade, means for
said downward stroke whereupon said plunger is
displaced in a direction inwardly of said body
against the resistance of said shock absorbing
spring means at which time the lower end of said
raising said driving means against the resistance
of said power spring means, ?xed abutment means
to receive the impact of said plunger on the
downward stroke of said driving means to inter
blade is substantially flush with the bottom wall
rupt said downward stroke whereupon said
of said magazine, and pin means within said
plunger is displaced in a direction'inwardly of
said bore against the resistance of said shock
absorbing spring means at which time the lower
end of said blade is substantially flush with the
shock absorbing spring means and coacting with
said distributing means towards the completion
of said downward stroke to further interrupt said
downward stroke and to compress said bumper
means to limit predetermined compression of
said shock absorbing spring means, said driving
means pursuant to said predetermined compres
sion of said shock absorbing spring means con
tinuing slightly downwardly to project said blade
bottom wall of said magazine, and pin means
within said shock absorbing spring means but of
a less height than the latter and coacting with
said disc towards the completion of said down
ward stroke to further interrupt said downward
stroke to compress said bumper and to limit com
pression of said shock absorbing spring means.
10. Staple driving means comprising a bore,
a distance beyond said bottom wall to complete
said down stroke during compression of said
bumper means, said shock absorbing spring and
a rubber bumper retained at one end of said bore,
bumper means instantly pursuant to the comple
a disc Within said bore, a plunger slidably guided
tion of said down stroke operating to expand 45 in said bore and in part projecting therefrom,
causing said driving means to automatically re
a helicoidal shock absorbing spring interposed
tract against the resistance of said power spring
between said disc and plunger, means to prevent
means.
total compression of said spring, and means to
8. In combination, a staple holding magazine
limit projection of said plunger out of said bore.
having a raceway, a spring controlled follower 50
11. Staple driving means comprising a bore,
in said magazine for shifting a staple into said
a ruber bumper retained at one end of said bore,
raceway, reciprocable driving means having a
a disc within said bore, a plunger slidably guided
body including a bore and a blade secured to said
in said bore and in part projecting therefrom, a
body projectible into and out of said raceway and
helicoidal shock absorbing spring interposed be
comprising slidably guided plunger in said bore
tween and coacting with said disc and plunger,
and in part projecting therefrom, helicoidal par
stop means within said spring to prevent total
tially compressed shock absorbing spring means
compression of said spring, and means to limit
for urging said plunger in a direction out of said
projection of said plunger out of said bore.
body, stop means to limit said projection of said
12. Staple driving means comprising a bore, a
plunger out of said body, a hollow rubber bumper
rubber bumper retained at one end of said bore,
of appreciable width and height disposed in said
a disc within said bore, a plunger slidably guided
bore, a relatively thin impact distributing mem
in said bore and in part projecting therefrom, a
ber, helicoidal power spring means acting on said
helicoidal shock absorbing spring interposed be
driving means for urging the latter downwardly,
tween and acting against said disc and plunger,
means for slidably guiding said driving means
an interrupter within and of a length less than
and blade, means for raising said driving means
said spring to prevent total compression of said
against the resistance of said power spring means,
spring, and means to limit projection of said
?xed abutment means to receive the impact of
plunger out of said bore.
said plunger on the downward stroke of said driv
13. Staple driving means comprising a bore,
ing means to interrupt said downward stroke
a hollow rubber bumper retained at one end of
whereupon said plunger is displaced in a direc
said bore, a disc within said bore, a plunger slid
tion inwardly of said body against the resistance
ably guided in said bore and in part projecting
of said shock absorbing spring means at which
therefrom, means to limit projection of said
time the lower end of said blade is substantially
plunger out of said bore, a helicoidal shock ab
?ush with the bottom wall of said magazine, and 75 sorbing spring interposed between said disc and.
2,412,620
13
plunger for holding said disc against said bumper
and said plunger against said limiting means and
a pin within said spring to prevent total compres
sion of said spring and adapted to abut said disc
to compress said bumper on displacement of said
plunger in a direction towards said driving
means.
14. In a tacker, a magazine, a cover movably
connected to said magazine for opening. and clos
ing the latter, staple driving means carried by
said cover, latching means, means swingably con
necting said latching means to said cover, slidable
staple follower means in said magazine, a spring
looped over said latching means and having one
leg connected to said follower means and having 15
i4
ably guided in said bore and in part projecting
therefrom, shock absorbing spring means inter‘
posed between and acting against said disc and
plunger, an interrupter within and of a length
less than said spring means to prevent total com
pression of said spring means, and means to limit
projection of said plunger out of said bore.
20. In combination, staple driving means com
prising a bore, an annular bumper retained at
one end of said bore, a plunger slidably guided in
said bore and in part projecting therefrom, shock.
absorbing spring means interposed between said
bumper and plunger, and an interruptor within
and of a length less than said spring means to
prevent total compression of said spring means.
another leg extending along the length of said
21. In combination, staple driving means com
cover and including an end portion extending up
prising a bore, a hollow rubber ‘bumper retained
wardly and anchored to said cover whereby upon
at one end of said bore, a disc within said bore
reciprocating said cover relative to said magazine
and against said bumper, a plunger slidably
said follower is reciprocated, and said spring nor 20 guided in said bore and in part projecting there
mally urging said latching means in a direction
from, a helicoidal shock absorbing spring inter->
away from said driving means.
posed between and acting against said disc and
15. In a tacker, a magazine, a cover reciproca
plunger, and a pin within and of a height less than
bly connected to said magazine for opening and
closing the latter, staple driving means carried by
said spring and cooperating with said disc to pre
vent total compression of said spring,
said cover, latching means, means reciprocably
22. In a stapling machine, a magazine for
connecting said cover to said magazine, slid
staples, driving means for successively ejecting
ably guided staple follower means in said mag
a staple out of said magazine, closure means for
azine, a spring looped over said latching means
said magazine and having a pivoted lever includ
and having one leg connected to said follower 30 ing a pivoted pawl at one end thereof for elevat
means and having another leg extending along
ing said driving means, an anti friction roller car
the length of said cover and including an end
ried at another end of said lever, and a pivoted
portion extending upwardly and anchored to said
handle for coacting with said anti friction roller
cover whereby upon reciprocating said cover rela
to actuate said lever.
tive to said magazine said follower is recipro
23. In a stapling machine, a magazine for
cated, said spring normally urging said latching
staples, driving means, a cover connected to said
means in a direction away from said driving
magazine, driving means carried by said cover for
means, and means for automatically interlocking
successively ejecting a staple out of said maga
said magazine with said latching means upon
zine, a- spring controlled normally raised pivoted
closing of said cover.
lever having a spring controlled pivoted pawl for
16. Means to prevent buckling of a staple when
elevating said driving means, a normally raised
driven downwardly in a raceway comprising in
handle pivoted to said cover for actuating said
part an inverted U shaped rail, and an inverted
lever, a roller mounted at one end of said lever
U shaped insert secured in said rail. and having
and adapted to be operated by said handle, means
an end face flush with the forward face of the 45 depending from said handle for straddling said
rail and including laterally extending ?anges ex
roller.
tending underneath spaced sides of said rail at
24. In a ‘stapling machine, a magazine for
the lower portions thereof and including lower
staples, a cover secured to said magazine, driving
front surfaces at the bottom of said raceway to
means slidably guided by said cover for succes
support said staple against rearward tilting.
50 sively ejecting a stapler out of said magazine, a
1'7. Means to prevent buckling of a staple when
pivoted lever having a pawl for elevating said
driven downwardly in a raceway comprising in
driving means, a handle pivoted to said cover for
part an inverted U shaped rail, and an inverted U
actuating said lever, anti friction means mounted
shaped insert secured in said rail and having an
on said lever and cooperating with said handle,
end face flush with the forward face of the rail 55 and a guard carried by said handle and adapted
and ?anges extending underneath spaced sides of
to embrace a portion of said cover.
said rail at the lower portions thereof and in
25. In a stapling machine, a magazine for
cluding lower front surfaces at the bottom of
staples, a cover pivotedly secured to said maga
said raceway to support said staple against rear
zine, driving means slidably guided by said cover
ward tilting.
60 for successively ejecting a staple out of said mag
18. In combination, a ribbed cover carrying an
azine, a pivoted lever having a pawl for elevating
abutment, staple driving means slidably guided
said driving means, a handle pivoted to said cover
in said cover and carrying a blade, a magazine
for actuating said lever, anti friction means
closed by said cover and having means for guiding
mounted on said lever and cooperating with said
staples and including a staple raceway, slidable 65 handle, and a guard carried by said handle and
means carried by said driving means for impact
adapted to embrace a portion of said cover.
ing said abutment to interrupt the staple driving
26. In a stapling machine, a magazine, a cover,
stroke of said blade, and cushion and supplemen
means movably connecting said cover to said
tary cushion means to regulate the extension of
magazine for opening and closing said magazine,
said blade out of said magazine following said in 70 supporting means disposed within said maga
terruption and including means for causing a
zine, means swingably sustaining said supporting
subsequent interruption of said driving means.
19. In combination, staple driving means com
means, pin means carried by said supporting
means and projecting in part laterally beyond
prising a bore, a bumper retained at one end of
said cover, slidable staple follower means in said
said bore, a disc within said bore, a plunger slid 75 magazine, a helicoidal spring looped over said pin
2,412,620
15
16
means and having one leg connected to said fol
lower means and having another leg extending
along the length of said cover, a member disposed
within and at the rear of said cover, said last men
tioned leg having an extension looped over said
member and extending upwardly into said cover
and having a terminal portion secured to said
projecting in part laterally beyond said cover,
slidably guided staple follower means in said mag
azine, a normally contracted helicoidal spring
looped over said pin means and having one leg
connected to said follower means and having an
other leg extending along the length of said cover,
a roller sustained substantially at the rear of said
cover, said last mentioned leg having an exten
sion looped over said member and extending up
reciprocated, said spring normally urging said pin 10 wardly into said cover and having a terminal por
_ tion secured to said cover whereby upon recipro
means in a direction away from said driving
cation of said cover relative to said magazine said
means, and keeper means for automatically inter
follower means is reciprocated, said spring nor
locking with said pin means upon closing of said
magazine by said cover.
mally urging said pin means in a direction away
27. In a stapling machine, a magazine, a cover, 15 from said driving means, and keeper means for
automatically interlocking with said pin means
means movably connecting said cover to said
magazine for opening and closing said magazine,
upon closing of said magazine by said cover.
supporting means disposed within said magazine,
29. In a stapling machine, a magazine, a cover,
means swingably sustaining said supporting
means movably connecting said cover to said
cover whereby upon reciprocation of said cover
relative to said magazine said follower means is
means, pin means carried by said supporting 20 magazine for opening and closing said maga
means and projecting in part laterally beyond
zine, supporting means disposed Within said mag
azine, means movably sustaining said supporting
said cover, slidably guided staple follower means
in said magazine, a helicoidal spring looped over
means, pin means carried by said supporting
said pin means and having one leg connected to
means and projecting in part laterally beyond
said follower means and having another leg ex 25 said cover, a roller on said pin means, slidably
tending along the length of said cover, a roller
guided staple follower means in said magazine, a
mounted within and substantially at the rear of
normally contracted helicoidal spring looped over
said cover, said last mentioned leg having an ex
said roller and having one leg connected to said
tension looped over said roller and extending up
follower means and having another leg extending
wardly into said cover and having a terminal por
along the length of said cover, a roller disposed
tion secured to said cover whereby upon recipro~
within and towards the rear of said cover, said
cation of said cover relative to said magazine said
last mentioned leg having an extension looped
follower means is reciprocated, said spring nor
over said last mentioned roller and extending up
mally urging said pin means in a direction away
wardly into said cover and having a terminal por
from said driving means, and keeper means for
tion secured to said cover whereby upon recipro
automatically interlocking with said pin means
cation of said cover relative to said magazine said
upon closing of said magazine by said cover.
follower means is reciprocated, said spring nor
28. In a stapling machine, a magazine, a cover,
mally urging said last mentioned roller and con
means movably connecting said cover to said
sequently said pin means in a direction away from
magazine for opening and closing said magazine, 40 said driving means, and keeper means for auto
supporting means disposed within said magazine,
matically interlocking with said pin means upon
means movabiy sustaining said supporting means,
closing of said magazine by said cover.
pin means carried by said supporting means and
CALVIN P. KIPP.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 655 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа