Improvements in Machines for Fastening Metal Strips to Cardboard, Wood, Leather, or the like
Year: 1893

page_text: Date of Application, 25th Feb., 1893-Accepted, 15th Apr., 1893
COMPLETE SPECIFICATION.
Improvements in Machines for Fastening Metal Strips to Cardboard,
Wood, Leather, or the like.
A communication from EMIL SALTZKORN, Consul, and LUDWIG NICOLAI,
Manufacturer, both of 21, Lobtauer Strasse, Dresden, in the Empire of
Germany.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
The subject of this invention is a machine for securing strips or bands of metal
to cardboard, wood leather, or other material and is mainly intended for use in the
manufacture of cardboard cases, band boxes, and the like, offering, as it does, a
convenient and reliable means of connection for the corners of such articles, with
the additional feature that the parts connected may be separated at will.
The metal strips or bands employed for the purpose are provided with openings
and so bent as each to form a channel piece with teeth at the bent edge. If the
toothed edges of two such strips are so arranged side by side that the projections
or teeth of one strip engage in the spaces formed between the teeth of the other
strip, and if both are then joined by means of a thin rod or wire, a hinge will be
obtained having the said rod or wire for its pivot.
By then securing the edges of such strips to pieces of cardboard, cut to the
required size to form the walls or sides of boxes, or the like, and by connecting
them by a removable pivot as stated, a hinged corner-connection is obtained which
may readily be undone if required, as, to do this, it is only necessary to remove
again the pivot holding together the two parts of the hinge, whereby the connection
of the sides is at once severed and they fall back and lie flat upon the surface
supporting them.
The same arrangement may be employed for other purposes and in all cases
where it is desired to form a movable and detachable connection between two
surfaces.
The machine devised for carrying out this method of junction is mainly charac-
terized by the arrangement of a stationary block, in which are provided a number
of recesses for the reception of the projecting parts of the edge of the angularly
bent metal strip or band, in order to protect these parts which are subsequently to
form the passage for the pivot, rod, or wire, from being compressed or flattened
down. Upon this block are adjustably arranged two cheeks which a common
spindle is adapted to drive towards each other, and the surfaces of which may be
provided with points so as more effectually to join the strips with the cardboard,
or the like, interposed between them; for if the surfaces have points, as stated,
the metal will through contact with them acquire a rough surface thereby
facilitating the connection.
In the accompanying drawings
Figure 1 is a front view,
Figure 2 a plan, and
Figure 3 a sectional elevation of a machine constructed in accordance with this

page_text: The block provided with recesses and which, in the case of the connection being
used for forming corners, of cardboard boxes, etc., must be of angular shape, so as
to enable two strips a and b at the same time to be fixed to the two sides c and d
placed against the opposite edges, is supported by a frame or table 2, and carries a
spindle 3 provided with a right and left screw-thread. Upon this threaded spindle
two plates 4 and 5 are adapted to move to and from the block whenever the
spindle 3 is turned by the driving-wheel 6 in one or the other direction. The
said spindle 3, in addition to the support it receives from the block 1, is further
supported at its ends by the bearings 7 and 8 arranged upon the frame. Two
angle pieces or cheeks 9 and 10 are screwed or otherwise secured to the plates 4
and 5, their opposite arms, which are directed towards each other, passing over
the block 1. One or both of them may at their edges be provided with pins
or points 11 so that when they are pressed against the strips, these points may
form a roughness in the surface of the latter and thereby facilitate their connection
with the cardboard or other material.
To limit the extent of motion of the cheeks 9 and 10 towards each other, the
plates 4 and 5 are fitted with set-screws 12 and 13, the points of which meet the
block 1. By turning these screws the space or distance between the two cheeks 9
and 10 may be adjusted as required. To limit the extent of motion of the cheeks
outwardly, the two plates 4 and 5 are connected with cross or toggle levers 14, the
arms of which are linked to a brake-lever 17 by means of springs 15 and 16. This
lever is pivotted at y and its arms or brake-shoes 18 are adapted to be applied to
the driving-wheel 6. As the plates 4 and 5 move apart, the said cross or toggle
lever 14 expands and raises the brake-lever 17 until its arms 18 place themselves
against the wheel 6 and thereby arrest it and the spindle 3 which cannot further
revolve or the plates move further asunder.
The operation of the wheel 6 is effected by the shaft 21 supported in the
bearings 19 and 20 in the rear of the frame 2, the motion being transmitted
through the medium of two friction-discs 22 and 23. The shaft or spindle 21 which
receives motion from the strap-pulley 24 carries a grooved pulley 25 with which
a lever 27 pivotted at engages by means of a più 26, which lever when it turns,
shifts the shaft 21 in the longitudinal direction. The lever 27 is in connection with
a pedal 30 through the bell-crank-lever 28 and the link 29. The end of one lever,
which extends beyond the point of junction (Figure 3), rests upon a lever 31
pivotted at, to one arm of which a weight 32 is attached whereby the pressure
or load which it sustains is so balanced.that the said arm remains in the horizontal
position. In this situation of the parts, the shaft 21 will occupy the intermediate
position in which it is shown in Figures 1 and 2, so that neither of the two friction-
discs 22 and 23 will engage with the driving wheel 6.
When through the movement of the treadle 30 the rod 29 is drawn down, the
counterweight 32 is lifted and the lever 27 moves in such a manner that it shifts
the shaft 21 to the left, whereby the friction-disc 23 is thrown into engagement
with the driving-wheel 6. The spindle 3 is now allowed to turn and the cheeks 9
and 10 are consequently caused to approach each other. When, however, the
treadle 30 is depressed, and thereby the rod 29 compressed, so that it turns the
lever 27 over to the other side, the shaft 21 is shifted to the right and the friction-
disc 22 engages with the wheel 6 with the result that the cheeks 9 and 10 move
away from each other.
The strips or bands of sheet metal, or the like, (Figure 8) are placed upon the
block in such a manner that their projecting portions enter the recesses of the said
block 1. The cardboard, or the like, cut into pieces of the required size is
introduced by band, or by means of guide-pieces or rules 34 provided on the table
or bed-plate 33, in such a manner that the edges of each piece take up their position
between the arms formed by the angularly bent metal strips.
are then allowed to move together sufficiently near to
against the cardboard or other material thus introduced.
the recesses of the block are at the same time not only
The cheeks 9 and 10
press the metal strips
The parts inserted in
protected from being

page_text: compressed or flattened, but also bent into cylindrical shape so as to be fit for the
reception of the pivot or wire.
It will be understood that the machine, here shown as being arranged for
operating the cheeks horizontally, may without any essential alterations be so
modified as to operate those parts vertically; also that the angular form of the
block which is required for securing the corners of the cardboard box is not
essential, as the shape of the said block may vary according to the purpose for
which it is employed.
Having now particularly described and ascertained the nature of this said inven-
tion as communicated to me by my foreign correspondents, and in what manner
the same is to be performed, I declare that what I claim is :-
1. A machine for securing strips or bands of metal to cardboard wood leather
and the like for the purpose of forming hinge-like separable connections at.
corners (mainly the corners of cardboard boxes) characterized by a block such
as I provided with notches or recesses a plates such as 4 and 5 mounted on a
spindle 3 having a double screw-thread the said plates being adjustable and
provided with cheeks 9 and 10 which on their surfaces facing each other may
carry pins or points 11 adapted to be driven through the metal strips, all substan-
tially as described and shown.
2
2. In a machine as characterized in the first claim, the arrangement of an
adjustable shaft 21 provided with two friction-discs 22, 23 the two armed lever 27
and the lever and link arrangement 28 comprising the link or rod 29 all arranged
in such a manner that when the pedal 30 is depressed one of the friction-discs
engages the driving-wheel 6 while by the pressure of the rod 29 the other friction-
disc is thrown into engagement with that wheel while in the position of rest the
said friction-discs are retained in the intermediate position by a weighted lever 31
substantially as described and illustrated by the accompanying drawings.
3. In a machine as characterized in the first claim, the arrangement of a brake-
device for the driving-wheel 6 in such a manner that cross or toggle levers
connected with the movable plates 4 and 5 are adapted by spreading or ex-
panding their arms to raise the brake-lever 17 and to press its cheeks or brake-
shoes 18 against the driving-wheel 6 all substantially as described and illustrated
in the accompanying drawings.
Dated this 24th day of Fohmar 1802
W. P. THOMPSON & BOULT,
Of London, Liverpool, Manchester, and Nottingham,
Chartered Patent Agents.