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Патент USA US3023422

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March 6, 1962
c. A. WATKINS
3,023,412
FASTENER FORMING AND INSERTING MACHINE
Filed Feb. 15, 1960
5 Sheets-Sheet 1
.10
£4.
PL.
11
33
16"
Z7
INVENTOR.
(#1419455 A. WATKINS
28
BY
19*- 1 ziw ATTORNCYS
%wwé
March 6, 1962
c. A. WATKINS
3,023,412
FASTENER FORMING AND INSERTING mourns
Filed Feb. 15, .1960
3 Sheets-Sheet 2
259:2
INVENTOR.
CHARLES A. MT/f/NJ'
7,2
March 6, 1962
c. A. WATKINS
‘3,023,412
FASTENER FORMING AND INSERTING MACHINE
Filed Feb. 15, 1960
Z2
3 Sheets-Sheet 3
.
L g: 3
'NVENTOR.
CHAIN-£5 4. WATKINS
72
ATTORNEY-5
States Patent "9 ”
C6
1
3,023,412
Patented Mar. 6, 1962
2
3,023,412
FASTENER FORMING AND INSERTING
MACHINE
Charles A. Watkins, Atlanta, Ga., assignor to The Auto
Soler Company, a corporation of Georgia
Filed Feb. 15, 1960, Ser. No. 8,766
4 Claims. (Cl. 1-1)
fastener forming and inserting means 12 to accommodate
the work W being handled.
The operating head 10 and work supporting means 11,
however, are carried on a frame structure 17 that is
specially formed according to the present invention with
an extended throat portion at 18. The frame structure 17
is arranged in any suitable manner to stand uprightly on
a base portion and has the throat portion 18 arranged in
_ This invention relates to fastener forming and insert
termediate the height thereof and extending from an
ing machines of the type arranged for forming fasteners 10 open end adjacent the work supporting means 11, so that
from a continuous length of wire and inserting the fasten
substantial clearance is provided within the throat por
ers formed in work to be secured, and more particularly
tion 18 for manipulating work W on the supporting means
to a machine of this type generally comparable to that
11 that is of appreciable breadth (as indicated in dotted
dlsclosed in copending application Serial No. 591,680,
lines at W’ in FIG. 2) as well as length and requires
?led June 15, 1956, now US. Patent No. 2,944,758, issued 15 nailing adjacent the edges thereof.
.Iuly 12, 1960, but further arranged uniquely for increas
To form the throat portion 18, spaced horizontal mem
mg substantially the capacity of the machine for handling
bers 19 and 20 are employed in the frame structure 17,
relatively large size work eifectively.
_
and these members 19 and 20 are preferably provided
_ According to the present invention, the fastener form
with a hollow cross-section for a purpose that will appear
mg and inserting machine provided incorporates a frame 20 presently. The closed end of the throat portion 18 is in
structure formed with an extensive throat portion at
turn formed by one or more vertical members 21 ar
which a very substantially increased clearance is provided
ranged as required to provide the necessary bracing
for accommodating the work being handled, while at the
strength thereat. A throat portion 18 having a lateral
same time arranging the operating mechanisms of the
reach of the order of 30 to 50 inches may be provided
machine on the frame structure for securing the work 25 readily in this manner, and reaches of even greater ex
effectively despite the fact that the extended throat por
tent may also be provided in particular instances by suit
tion provided in the frame structure prevents mechanical
linkage of these operating mechanisms in the usual man
ner. A fastener forming and inserting machine arranged
ably strengthening the design.
When a throat portion 18 of the sort described above
is provided in the frame structure 17, however, it be—
1n accordance with the present invention affords substan 30 comes impossible as a practical matter to link the op
erating head 10 and work supporting means 11 mechani
tial operating advantages in the nailing of such structures
as wooden shipping crates, box spring frames, furniture
panels, and a variety of similar items in which nailing
cally for operating actuation in the usual manner, and
must be done adjacent the edges of a structure that has
tuating control arrangement to eliminate this di?iculty.
the present invention accordingly provides a special ac
substantial breadth as well as length.
35 For this purpose, an electrical power circuit connection is
_ The foregoing and other features of the present inven
provided for the machine at 22 and a pneumatic or air
t1on are described in further detail below in connection
pressure power circuit connection at 23.
with the accompanying drawings, in which:
The electrical power circuit connection 22, as detailed
‘ FIG. 1 is a perspective view of a fastener forming and
in FIG. 3, is wired through a line switch 24 from which
inserting machine embodying the present invention;
connections run to a drive motor 25 for the operating
FIG. 2 is a side elevation corresponding generally to
head 10 and to two parallel circuits 26 and 27, in one of
FIG. 1, but partly broken away and partly sectioned to
which parallel circuits 26 a manually operable foot
treadle switch 28 is wired in series with an actuating sole
noid 29 for an air-operated clutch means 30 (see FIGS.
FIG. 3 is a diagram indicating the arrangement of the 45 2 and 3), and in the other of which circuits 27 a cam
electrical control system and the air pressure system pro
operated microswitch 31 is Wired in series with a second
vided for actuating the operating controls of the machine
actuating solenoid 32 for an air~operated pressure means
shcéw
the relative arrangement of the operating elements;
an
shown in FIGS. 1 and 2.
'
33 (see FIGS. 2 and 3).
_
Referring now in detail to the drawings, and more par
With the above described circuit connections, closing
ticularly at ?rst to FIGS. 1 and 2, the illustrated embodi 50 of the line switch 24 results in starting the drive motor
ment of the present invention comprises a fastener form
25 for the operating head 10 which is arranged for driv~_
ing and inserting machine incorporating an operating
head, as indicated generally at 10, by which ‘fasteners
are formed and inserted in work W carried by a work
supporting means indicated generally at- 11.
The operating head 10 corresponds substantially with‘
the arrangement disclosed at length in the above noted
copending application Serial No. 591,680, incorporating
a fastener forming and inserting means at 12 that is op
erated cyclically from a drive shaft 13 to draw a- con
tinuous length of fastener wire F from a reel supply R
thereof, and to cut a fastener (not shown) from the lead
ing end of the fastener wire F and drive the fastener thus
formed during each operating cycle.
ing connection with the operating head drive shaft 13
through the air-operated clutch means 30 referred to
above as being associated with the actuating solenoid 29.
55 The foot treadle 28 thereupon serves as a selectively op
erable actuating control through which a cyclic operation
of the fastener forming and inserting means 12 is ob
tained whenever it is tripped; the tripping of foot treadle
28 closing the parallel circuit 26 so as to energize the
60 solenoid 29 and thereby actuate the clutch means 30 to
connect the motor 25 with the drive shaft 13. If the foot
treadle 28 is released upon tripping, the fastener forming
and inserting means 12 will complete just one cycle of
operation, while it may be made to continue successive
The work supporting means 11 is likewise similar to 65 cyclic operations by holding the foot treadle 28 depressed.
that disclosed in the copending application Serial No.
The air-operated clutch means 30 comprises simply,
591,680 referred to above in that it incorporates a work
a single action air cylinder and piston ?tted with a valve
supporting table 14 mounted on a supporting arm struc
mechanism, as indicated at 30’, controlled by the ac
ture 15 that is arranged for vertical adjustment along a
tuating solenoid 29 to function as an “air-motor” for
rack member 16 to provide for positioning the work 70 operating a spring biased clutch plate just as a mechani
supporting table 14 in properly spaced relation below the,
cal trip means would. The air pressure for operating
3,023,412
the clutch means 30 is supplied from the previously
mentioned pneumatic power circuit connection 23 which,
as seen best in FIG. 3, runs through a suitable lubri~
cator unit at 34 to connections with parallel supply con
duits at 35 and 36, the ?rst of which (35) is connected
through a ?exible hose coupling 37 to the clutch means
30.
The other parallel supply conduit 36 extends through
4
for vertical adjustment in relation thereto, whereby
clearance is provided within said throat portion for ma
nipulating work on said supporting means that is of
substantial breadth as well as length, fastener forming
and inserting means carried on said frame structure
above said throat portion and in opposed relation to
said work supporting means, a shiftable member incor
V porated in said work supporting means for movement
in opposed relation to said, fastener forming and insert
from which a pair of flexible hose couplings 40 and 10 ing means to clamp work thereat during the insertion
of each fastener therein, manually operable means ad~
41 are connected to the previously mentioned air-op
jacent said frame structure base portion for selective
erated pressure means 33, that comprises a double action
electrical actuation of said fastener forming and insert
air cylinder and piston having the valve mechanism 39
ing means cyclically to form and insert fasteners in Work
therefor controlled by the actuating solenoid 32 in the
manner of an “air motor” to raise and retract a shift 15 on said supporting means, and means adjacent said fas
tener forming and inserting means operable automatically
able pressure member 42 that is incorporated in the
by each cyclic operating movement thereof for electrical
work supporting means 11 to clamp the Work W at the
actuation of said shiftable member of said Work sup
fastener forming and inserting means 12 during the in
porting means to clamp work at said fastener forming
sertion of each fastener in the Work W. This shiftable
pressure member 42 is suitably formed by an anvil ele 20 and inserting means during the insertion of each fas
tener in said work.
ment mounted at the extending end of the piston rod
2. In a fastener forming and inserting machine, the
of the air-operated pressure means 33 for rising through
structure de?ned in claim 1 and further characterized
a clearance aperture 14' in the work supporting table
in that the throat portion of said frame structure com
14 to exert the necessary work clamping pressure in
prises horizontal structural members having a hollow
opposed relation to the fastener driving force exerted
cross-section, in that said manually and automatically
by the fastener forming and inserting means 12.
a ?exible hose coupling at 38 to a valve mechanism 39
Timed operation of the shiftable clamping member
42 for the above noted purpose is provided through the
previously mentioned microswitch 31 which is operated
automatically by a cam 43 carried on the operating
head drive shaft 13 so as to trip the microswitch 31
operable actuating means both comprise electrical switch
means for tripping to perform their actuating function,
in that both of said actuating means operate respective
air-pressure means for controlling the respective opera
tion of said fastener forming and inserting means and
said shiftable clamping member of said Work support
ing means, in that respective electrical and air-pressure
fastener forming and inserting means 12 and maintain
power circuits are provided for said actuating means
it closed until the fastener insertion accomplished dur
ing each cycle has been completed. Accordingly, the 35 and air-pressure means, and in that said horizontal struc
tural members of said frame structure throat portion are
previously described manual tripping of the foot treadle
arranged for housing said power circuits within the
28 to close the parallel electrical circuit 26, and there
hollow cross-section thereof.
by initiate an operating cycle of the fastener forming
3. In a fastener forming and inserting machine of the
and inserting means 12, has the secondary effect of auto
maticaly tripping the microswitch 31 to close the fur 40 type arranged for forming fasteners from a continuous
length of wire and inserting said fasteners in work to be
ther parallel electrical circuit 27 and thereby energize
during the initial portion of each operating cycle of the
the actuating solenoid 32 to operate the pressure means
33 for raising the shiftable member or anvil 42 to an
active work clamping position, as indicated in FIG. 2,
secured, a frame structure formed to stand uprightly on
a base portion and incorporating a relatively extensive,
lateral throat portion intermediate its height, work sup
during each fastener insertion. Subsequent opening of 45 porting means carried on said frame structure below said
throat portion adjacent the open end thereof and vertically
the microswitch 31 upon release by the cam 43 as each
adjustable thereat for selective clearance disposition with
cyclic fastener forming and inserting operation is com
in said throat portion of work extending beyond said sup
pleted results in deenergizing the solenoid 32 to cause
porting means, fastener forming and inserting means car
retraction of the shiftable clamping member 42 by the
pressure means 33 to its normal position in preparation 50 ried on said frame structure above said throat portion and
in opposed relation to said work supporting means, a
for similar clamping action during the next operating
cycle.
shiftable member incorporated in said work supporting
means for movement in opposed relation to said fastener
forming and inserting means to clamp work thereat dur
and 20 de?ning the throat portion 18 with a hollow
cross-section, as previously noted, these members 19 and 55 ing the insertion of each fastener therein, manually oper
able means comprising a foot treadle switch adjacent
20 may be further arranged advantageously to house
said frame structure base portion and connected electri
a considerable portion of the electrical and pneumatic
By forming the spaced horizontal frame members 19
operating circuits and thereby utilize the throat portion
18 for practical installation and protection of these cir
cally for actuating cyclic operation of said fastener form
handling capacity in comparison with that previously
microswitch adjacent said fastener forming and inserting
means operable automatically by each cyclic operating
ing and inserting means to form and insert fasteners in
cuits, as well as for providing a very substantial work 60 work on said supporting means, and means comprising a
available in machines of this sort.
The present invention has been described in detail
movement thereof and connected electrically for actuating
above for purposes of illustration only and is not in
said shiftable member of said work supporting means to
tended to be limited by this description or otherwise 65 clamp work at said fastener forming and inserting means
except as de?ned in the appended claims.
during the insertion of each fastener in said work.
Iclaim:
4. In a fastener forming and inserting machine, the
1. In a fastener forming and inserting machine of the
structure de?ned in claim 6 and further characterized in
type arranged for forming fasteners from a continuous
length of wire and inserting said fasteners in Work to 70 that the cyclic operation of said fastener forming and
inserting means is controlled by an air operated clutch
be secured, a frame structure formed to stand uprightly
means incorporating an actuating solenoid with which said
on a base portion and incorporating a relatively exten
foot treadle switch is electrically connected, and in that
sive, lateral throat portion intermediate its height, work
movement
of said shiftable clamping member of said work
supporting means carried on said frame structure below
said throat portion and adjacent the open end thereof‘ 75 supporting means is controlled by an air operated pres
3,023,412
‘
5
6
sure means incorporating an actuating solenoid with which
2,900,638
said microswitch is electrically connected.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,871,479
Wright ______________ __ Feb. 3, 1959
5
O’Kelley ____________ __ Aug. 25, 1959
2,906,010
Hannable ____________ __ Sept. 29, 1959
2,921,316
Carlzen _____________ __ Jan. 19, 1960
469 305
’
FOREIGN PATENTS
Great Britain _________ __ July 22, 1937
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