Improvements in Box Nailing Machines.
Year: 1893

page_text: Date of Application, 21st Feb., 1893-Accepted, 22nd Apr., 1893.
COMPLETE SPECIFICATION.
Improvements in Box Nailing Machines.
I, WILLIAM SPENCER DOIG, of 24 Franklin Street, Brooklyn, in the County
of Kings and State of New York, one of the United States of America, Engineer
do hereby declare the nature of this invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:—
The said invention relates more particularly to machines for nailing boxes having
a partition or partitions intermediate of its ends and it consists of the construction
and novel arrangement of parts as hereinafter set forth.
In this application I have not deemed it necessary to give a detailed illustration
or description of the nail trays, chutes, pockets, etc., as the same are fully shown
and described in my British Patent No. 17,393 of October 13, 1891, to which
reference. may be had.
In the accompanying drawing,
Fig. 1, is a front elevation of a machine embodying my improvements;
Fig. 2, is a vertical section thereof; at the line a, a, of Fig. 3;
Fig. 3, is a horizontal section; at the line y, y, of Fig. 2;
Fig. 4, is an enlarged detail section of a cam and its driving mechanism ;
Fig. 5, shows the cam on an enlarged scale in one position ;
Fig. 6, shows it in another position;
Fig. 7, shows it in still another position;
Figs. 8, and 9, are enlarged detail views of parts of the machine;
Fig. 10, is a horizontal section of the machine; and
Fig. 11, is a perspective view showing the adjustable arrangement of the nail
pockets; also the arrangement of the push rods or hammers.
Referring by letter to the drawing, A, designates the main frame of the machine,
comprising uprights a, and a top-piece a¹.
A series of nail trays A¹, is mounted on the top-piece a', and from which flexible
chutes a², extend into pockets a³. The details of these parts are shown in my
Patent above referred to.
In this machine there are three sets of nailing devices of four each. Each set of
pockets a³, is mounted on an arm A, extending outwards from a transverse bar a*,
on the uprights a. The arms are intended to be adjusted longitudinally of the
bar a', so as to bring the pockets in proper position over end pieces or partitions of
a box. I have, therefore, shown them as provided with a collar a³, surrounding or
engaging the bar a*, and I have also represented the bar a*, slotted substantially
Tshaped in cross section, as shown in Fig. 2, for the purpose of using a dove-tailed
bar in place of a collar. They may be held as adjusted by any desired means,
such, for instance, as thumb-screws.
The pockets are also adjustable lengthwise of the arms upon which they are
mounted.
The nail drivers a are depended from heads a' which are adjustable lengthwise
of arms B, extending outwards from a vertically reciprocating cross-head B', and
upon which the said arms B, are longitudinally adjustable to bring the drivers in
line with the pockets through which they extend.
B², designates devices for supporting or holding the end pieces and portions of a
box while the sides are being nailed thereto. Each holding device consists of a
stationary jaw b, and an automatically movable jaw b. The jaws b, are what I
term the stationary jaws. They are, however, adjustable along a bar b², secured to
the uprights a. The jaws b', are rigidly yet adjustably mounted on a réciprocating
bar B³, which has bearing in end blocks ³, on the bar 63, and also extends through
Pain Q77

page_text: holes in the jaws . The bar B³, is moved automatically to cause the jaws to close
upon an end piece or partition by means of a cam arm B*, depending from the
cross-head B', and adapted to operate against a tappet, on the end of the bar B³.
A spring Be, surrounds the bar B³, between a head on its opposite end and the
block, and serves to open the jaws when the cam arm B, leaves the tappet 7, by
the upward movement of the cross-head B¹.
The cross-head B', has a pitman connection C, with a crank wheel C2, mounted
on a shaft C3, which is driven from a main or power shaft C, by means of gear
wheel connections c, c¹.
The shaft C, carries a sprocket wheel 2, which has a sprocket chain e, connec-
tion with a sprocket wheel c, the shaft of which is provided with a crank c. From
this crank c,cords or similar connections e, extend over pulleys c', to the trays A¹,
whereby a tilting motion is imparted to the trays to force the nails forward.
In this machine I provide for automatically raising or lowering a table D, to
accommodate the machine to the varying width or height of a box during the
process of making the same.
The table D, is movable up and down on the frame A, and it may be first
adjusted by means of a screw-threaded rod d, engaging in a block D'.
A gear
wheel d¹, on the upper end of the screw d, is engaged by a gear wheel d², carried
by the table D, and provided with a suitable handle. It is obvious that by turning
the screw d, the table may be adjusted vertically before a box material is placed
thereon.
The block D', has a cam surface D2, adapted to engage successively on the cam
surfaces D3, D4, D', formed in a block D', carried by a bevel gear D'.
The block D', has a tubular hub E, extending downward into a tubular post E',
erected on the base plate of the machine. The block D', is prevented from rotary"
motion by means of rib and groove connection e, between the hub E, and the
post E', but the block is free to move vertically. Rotary motion is imparted to
the bevel gear D', and the block D, from the cross-head B₁, by means of
connections between said gear and cross-head which I will now describe.
The gear D', meshes with a bevel gear F, mounted on a shaft F', having
bearings in a standard erected on the base of the machine. The outer end of the
shaft F, is provided with a gear F2, which engages with a gear F³, mounted on a
shaft F. The inner end of the shaft F, has a wheel F, provided with three
ratchet-shaped teeth, adapted to be engaged by a dog F, carried by a rock
lever F, fulcrumed on the shaft F*.
The dog F, is guided in a groove f', in the lever F7, and is impelled
forwards upon the ratchet teeth by means of a spring f2. This spring f2, allows
the dog Fe, to be forced back by the curved surfaces of the teeth, in the usual
manner.
A link rod F, extends from one end of the lever F7, to an arm F, depending
from the cross-head B'.
Obviously an upward movement of the cross-head will rock the lever F7, and
cause the dog to move the wheel F³, one step, or one-third revolution; but a
downward movement of the cross-head will not impart movement to the wheel,
because the dog will yield and ride over the curved surface of a tooth, to engage
with the next tooth.
The dog F, may be moved out of engagement with the wheel F6, by means of
a handle, pivoted on the lever F7, and bearing against a lug f, on the dog.
The operation of the machine is as follows: The table D, being at the proper
height, with the cam surface D2, resting on the highest cam surface D³, of the
block D, as shown in Fig. 5, the end and partition boards are placed in position
with one side board thereon; the machine is now operated to lower the cross-
head B¹, to force the nails. Upon the ascent of the cross-head the block Dº,
will be rotated one step, so that its intermediate can surface D4 will be engaged
by the cam surface D2, as shown in Fig. 6. This lowers the table D, a distance
equal to the thickness of a side board. The box is now turned and the bottom

page_text: board is placed in position and nailed as before described. The upward movement
of the cross-head now turns the block De, until its lowest cam surface Do, is
engaged by the cam surface D³, as shown in Fig. 7. This allows the table to
lower so that the box may be turned to have the opposite side board nailed on.
In this machine the clamping mechanism and the transverse arms carrying the
pockets and pushers may be removed and the pocket and pusher mechanism
described in my patented machine above referred to may be substituted, so as to
nail a box in the ordinary way.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :.
1. In a box nailing machine, the combination with a reciprocating cross-head
and nailing mechanism, substantially such as described, of a table movable
vertically on the machine frame, a screw-thread rod depending from the table,
a block engaging with the rod, a gear wheel acting on the block, a gear wheel
meshing with the first-named gear, and a connection comprising ratchet
mechanism between the last-named gear and the cross-head, whereby the table
is moved by a movement of the cross-head, substantially as specified.
2. In a box nailing machine, the combination with nailing mechanism, sub-
stantially such as described, and comprising a cross-head; of a vertically movable
table, a rod extending downwards from the table, a block on the lower portion
of this rod, provided with a cam surface, a rotary block, having a series of cam
surfaces of varying height, and connections between the rotary block and cross-
head, whereby said block is rotated by a movement of the cross-head, substantially
as specified.
3. In a box nailing machine, the combination with a frame of a transverse bar
on the frame; a series of arms extending outwards from the bar and adjustable
lengthwise of the bar; nail pockets adjustably arranged on the arms, a cross-head,
arms extending outwards from said cross-head and adjustable lengthwise thereon,
push rods or hammers, adjustably arranged on said arms, a vertical adjustable
table, and means substantially such as described for automatically adjusting the
table, step by step, to accommodate the machine to the varying width or height
of a box during the process of making the same, substantially as specified.
4. In a box nailing machine, the combination with the main frame, the
reciprocating cross-head and the nailing mechanism, of the adjustable fixed
clamping jaws b, the movable bar B³, the jaws 61, carried thereby, the spring for
moving the bar in one direction and the cam carried by the cross-head for moving
the bar in the opposite direction, substantially as specified.
Dated this 21st day of February 1893.
ALLISON BROS.,
Agents for the Applicant.