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Патент USA US2113627

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‘April _ 12, 1938.
Patented Apr. 12, 1938
Albert I. Obermiller, ySanta Ana, Calif., assigner to
Food Machinery Corporation, San `lose, Calif.,
a corporation of Delaware
Application December 28, 1936,( Serial No. 117,710
3 Claims.
This invention relates to magazines from which
slats or other similar elements are dispensed,
the invention having particular utility in the
nailing machine art.
In nailing machines of the automatic or semi
automatic type which are in general use for the
manufacture of boxes, box parts such as the slats
for forming the sides and bottom of the box are
placed in the machine in the form of a stack >from
l O the bottom of which these slats are stripped one
at a time as required by the machine. As the
slats are placed in the magazine in small groups,
the ends of the slats are generally out of align
ment in such a way that there is a tendency for
1 the slats in the stack to bridge by binding
against the downwardly converging end walls of
the magazine. ’I‘his bridging sometimes pre
vents the lowermost slat from being properly
stripped from the magazine when its turn comes
to be fed into position to be assembled in a box.
It is an object of this invention to eliminate
the bridging aforementioned and thereby insure
the timely stripping of slats from the lower end
of the slat magazine as these are required.
Owing to the tendency of slats to bridge in a
magazine where the end walls converge down
wardly slat magazines have allowed such a degree
of end play by the slats contained therein that
the ends of the slats are not aligned, when fed
30 from the bottom end of the magazine, with the
precise planes in which they must be located
when assembled with the work.
It is another object of this invention, there
fore, to not only prevent the bridging of slats. in
35 the slat magazine but to insure the location of
the ends of each slat fed from the magazine in
the precise planes in which said ends must lie
when assembled with the work to which said
the mechanism of the invention in slat aligning
in referring specifically to the drawing the old
elements o1" the machine shown therein will be
described only insofar as is necessary to show '
their cooperation with the specific structure em
bodying the present invention. Insofar as pos
sible, however, reference to old elements of the
machine will be made by use of the same refer
ence characters with which these elements are
identified in the aforesaid patent.
The nailing machine N includes a frame 2 and
a nailing table I5 on which the work rests, this
work including box ends 5 which are gripped by
discs il so that the outer faces of the box ends
are disposed, while being worked upon, in a pair
of precisely located vertical parallel planes.
Mounted on the frame 2 over the work is a nail
ing cross head 3| which carries nail drivers 6|]
and nail carrying chucks I Ii, the cross head 3|
reciprocating vertically so as to nail slats on
three edges of the box ends 5 thereby forming a
box. Nails driven from the chucks I6 in each
nailing operation are driven approximately one
quarter of an inch inside of the outside planes
of the box ends 6.
Supported in a magazine M on the frame 2 is a
stack of slats I0 which are adapted to be fed as
required by a carriage I I into position for nailing
to the box ends 6. The carriage I| is actuated by
an arm I2 and carries box end feeding lugs 'I4 and
slat feeding arms 86 uponwhich areprovidedhooks
El which catch onto the lowermost slat in the
stack I0` as the arms 86 move horizontally to the
right underneath this stack and carry the slat
engaged into place over the box ends 6. As
pointed out in said patent, suitable power mech
slats are delivered.
anism is provided for coordinately actuating all
of the elements mentioned hereinabove.
’I'he manner of accomplishing the foregoing
objects, as Well as further objects and advantages,
will be made manifest in the following description
taken in connection with the accompanying
The stack lli of slats includes a multiple of
series of slats each of which includes four side
slats Ita, two» of these being placed on each side of
a pair of bottom slats Elib», the bottom slats, as
drawing, in which:
shown in Fig. 1, being substantially wider than
Fig. 1 is a fragmentary cross sectional diagram
matic view of a nailing machine of the type sho-Wn
in U. S. Letters Patent No. 1,844,333 issued Feb
the side slats. The stack Iß rests upon a pair 45
of channel irons |33 just inside of which the arms
ruary 9, 1932 to E. C. Northrup on a Box ma
the lower end of the stack lll.
The magazine M includes a back wall |3| and
end walls |32 the latter converging downwardly
toward each other and being provided with cut
chine, this iigure illustrating a preferred embodi
50 ment of the present invention incorporated in
said machine.
Fig. 2 is a fragmentary rear elevational view of
Fig. 1 with the mechanism of the invention
shown in retracted position,
Fig. 3 is a View similar to Fig. 2 and showing
85 operate which strip the slats successively from
out recesses |33.
The magazine M is also provided with a slat
aligning mechanism |35 which includes a pair
of bearings |36 mounted on the magazine end 55
These bearings rotatably support
shafts lil@ on` the rear ends of which are fixed
cam arms lili and on the front ends of which
magazine means for containing a stack of slats;
means for stripping slats from the lower end of
said stack in a direction at right angles with the
arey fixed lateral slat aligning arms |42.
longitudinal axis of said stack and parallel with
arms I4! are provided with cam faces |50 which
said planes and carrying the slats so stripped so
are adapted to be engaged by rollers |5| mounted
as to overlie said work; mechanism operating
on posts E52 which extend horizontally from the
automatically and intermittently to press in
nailing cross head 3| when this cross head de
scends to perform a nailing operation. The slat
aligning arms |42 are shaped inwardly as shown
wardly against the ends of a portion of the
slats in said stack to adjust said slats as' they
gravitate downward to` bring the opposite ends
of said slats into superimposed relation in the
aforesaid parallel planes; and means for nailing
said slat ends to said work when overlying the
in Figs. 2 and 3 to have lower portions |60 in
ner faces of which are brought into coincidence
with the same parallel vertical planes as those
in which the outer faces of the box ends 6 lie
15 as above noted, this precise. alignment taking
2. In a nailing machine the combination of:
place each time the rollers lâl move downwardly
means for supporting work with its opposite
with the nailing cross head 3| so as to come
into engagement with the cam faces |50 on the
arms lêl as shown in Fig. 3.
Vlïhen the cross head 3| is lifted so that the
rollers |5| do not engage the cam faces |50 the
arms Mi and |42 are held into the positions in
which these are shown in Fig. 2 by contractile
coil springs |62 connected to said arms which
ends lying in two precisely located parallel
planes; magazine means for containing aV stack
of slats with the ends of said slats approximate
ly in said parallel planes; means for stripping 20
slats from the lower end of said stack in a direc
tion parallel with said planes and carrying the
slats so stripped so as to overlie said work; nail
ing mechanism disposed over said work andV
N) Ul are drawn by these springs into contact with ad
adapted to drive nails downwardly just within 25
justable stop screws |63 provided on the frame 2.
A Ycomparison of Figs. 2 and 3 illustrates clear
ly how any bridging effect which might occur by
endwise misalignment of successive slats or
30 groups of slats deposited in the stack lll is pro
said planes to nail said slats to said work; and
means actuated by said nailing mechanism to in
termittently press inwardly against the ends of
a portion of the slats in said stack to adjust
said slats as they gravitate downward to bring l30
the opposite ends of said slats into superimposed
gressively eliminated as these s_lats gravitate
downwardly in the magazine M by the inner
faces of the arm portions I Ell being pressed in
wardly to precisely coincide with the planes
bounding the opposite ends of the work onto
relation in the aforesaid parallel planesso that
when said slats are stripped from the stack and
carried into position overlying said work, the ends
With the cause of bridging thus practically
eliminated the end walls |32 of the magazine M
of said slats are in exact vertical alignment with
the ends of said work.
3. In combination: magazine means for con
taining a stack of slats or the like, said means
may be built to converge so that their inner
faces at their lower ends also practically lie in
including a pair of downwardly converging end
walls; means for stripping slats from the bot
the parallel vertical planes forming the end
torn of said stack in a direction at right angles to
the longitudinal axis of said stack; and mech
anism intermittently operative to press inward
against the ends of at least a portion of the slats
which slats are to be assembled.
boundaries of the work. A feeding of the slats
Illa and lilo into the precise positions necessary
for them to have in order to form a perfect box
is thus assured.
What I claim is:
l. In a nailing machine, the combination of:
means for supporting work with its opposite ends
lying in two precisely located parallel planes;
in said stack to adjust said slats thus pressedE '
against so that as they gravitate downwardly
they will pass freely between the lower portions
of the aforesaid magazine end walls.
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