Improvements in Machines for Bending and Embossing Sheet Metal.
Year: 1890

page_text: comprete oрестапот сеть, тут прод
COMPLETE SPECIFICATION.
Improvements in Machines for Bending and Embossing Sheet
Metal.
I BENJAMIN JOSEPH BALDWIN Jr., corner of Wall Street and Grand Avenue, Paris
in the County of Lamar, State of Texas, United States of America, Real Estate and
Loan Broker 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 object of the invention is to provide a new and improved machine which is
simple and durable in construction, very effective in operation, and especially
designed for simultaneously curving and embossing sheet-metal plates for use as
cornices, metal shingles, etc.
The Invention consists of fixed die plates, of which the outer ones are inclined
toward the inner ones and a reciprocating die operating between the middle or inner
fixed die plates.
The Invention also consists of certain parts and details and combinations of the
same, as will be hereinafter fully described and then pointed out in the claims.
Reference is to be had to the accompanying drawings, forming a part of this
specification, in which similar letters of reference indicate corresponding parts in all
the figures. Figure 1 is a side.elevation of the improvement. Figure 2 is a front
view of the same. Figure 3 is an enlarged front view of part of the improvement.
Figure 4 is a transverse section of the adjusting wedge and its guideway, and Figure 5
an enlarged plan view of one of the fixed dies.
The improved bending and embossing machine is provided with a suitably-con-
structed frame A on the front of which is bolted a table B supported on its outer end by
curved brackets C fastened to the frame A. In the table B is formed an aperture in
which is held vertically adjustable a block D by means of a screw E screwing in a
nut-plate F fastened to the underside of the table B. On the screw E is secured a
hand wheel E' for conveniently turning the said screw to raise and lower the block D.
The latter supports two transversely-extending flanged and spaced die plates G
and G₁ adapted to be moved transversely and secured in place by bolts G*
passing through slots G³ formed in the flanges of the said plates (see figure 5).
On the outer side of the die plate G is arranged a similar die plate G* inclined
toward the plate G by being adjustably secured to a bottom G³ pivoted to the table B
and resting on a wedge G mounted to slide longitudinally in suitable guideways
formed on top of the table B. A screw rod G screwing a bracket on the table B
serves to move the wedge G longitudinally so as to raise or lower the bottom G³ to
increase or diminish the inclination of the die plate G₁ to the die plate G. On the
right hand side of the die plate G¹ is arranged a die plate G³ similar to the die plate G
and mounted in the same manner.
The tops of the die plates G G G and G³ are formed into shapes according to
the configuration desired to be embossed or pressed on the sheet metal (see figure 1).
The plates G and G³ are inclined more or less toward the fixed die plates G
and G according to the radius to which the sheet metal is to be bent.
When

page_text: the wedges G are moved outward from the point shewn in figure 3, the radius
to which the sheet metal is bent will increase and the radius will decrease when
the said wedges are moved inward.
Above and between the die plates G and G¹ is adapted to slide a reciprocating
. die H having its under side formed to the shape of the upper ends of the plates G
and G: The die H is secured on the slide I mounted to slide in suitable bearings J
secured on a bracket J¹ fastened or formed on the front of the frame A. The upper
end of the slide I is pivotally connected by a pitman K with the crank disc L secured
on the outer end of a transversely-extending shaft N mounted to turn in suitable bearings
formed in the upper end of the frame A and in the bracket J' previously mentioned.
A fly-wheel O is secured on the shaft N between the bracket J and the frame A and
on the rear end of the said shaft is secured a pulley P connected by an endless belt Q
with the driving wheel R mounted to turn on a suitable stud S held in the frame A.
The driving wheel R may be set in motion by hand or other power. In the rear of
the die D is held an adjustable gauge plate T secured in place on the table B by a
set screw U. The gauge plate T serves as a stop against which the edge of the sheet
metal being operated upon rests, thereby permitting of any given number of pieces of
sheet metal being uniformly bent and embossed.
The operation is as follows; When the reciprocating die H is in its lowermost
position it stands a short distance above the upper edges of the die-plates G and G³,
the distance between the die H and the projections G and G¹ depending on the
thickness of the metal to be operated on. When the driving wheel R is set in
motion, it imparts, by means of the belt Q and the pulley P, a rotary motion to the
shaft N, which, by its crank disc L and the pitman K, imparts a reciprocating motion
to the slide I and the die H. When the latter is moved upward, the operator places
the sheet metal to be embossed and bent on the die plates G and Go the rear edge
of the sheet metal resting against the guide T. Now, when the die H moves down-
ward it presses on the sheet inetal and bends the latter downward until the sheet metal
passes on to the upper edges of the die-plates G and G and thus the metal is bent to
the segment of a circle, the radius of which can be determined as previously described.
At the same time that the metal is bent it is embossed to the configuration of the
upper edges of the die plates G, G, G, and G³, and the lower edge of the recipro-
cating die H. Thus it will be seen that the machine accomplishes, simultaneously,
two objects that is, the curving of the sheet metal and the embossing of the
same. As the die plates G, G¹, G4, and GB, and the die H, are made narrow, as
shown in figures 2 and 3, no damage is done to the metal during the process of
bending and embossing the same. By the employment of two lower dies and an
upper die working between the said lower dies the metal is given the desired
form, without injuring it, as it does not receive a positive anvil blow, there being
no solid body below it.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is;
1. In a machine for bending and embossing sheet metal, the combination of two
spaced dies, two inclined dies on the outer sides of the spaced dies, and a movable
die arranged above, and operating between, the spaced dies, substantially as
described.
2. In a machine for bending and embossing sheet metal, the combination of a.
movable die, two dies arranged below the movable die and distance apart a little
greater than the thickness of the movable die, and two inclined and adjustable dies
one on the outer side of each of the spaced dies, substantially as herein shewn and
described.
3. In a machine for bending and embossing sheet metal, the combination, with a
reciprocating die made of a thin plate the lower edge of which is shaped to the design
to be embossed, of die plates having their upper edges formed' to the design to be
embossed said upper edges being arranged in the segment of a circle, the said fixed

page_text: die plates comprising two middle parallel plates between which operates the said
reciprocating die and outer plates inclined toward the inner or middle plates, substan-
tially as shown and described.
4. In a machine for bending and embossing sheet metal, the combination, with a
reciprocating die made of a thin plate the lower edge of which is shaped to the
design to be embossed, of die plates having their upper edges formed to the design to
be einbossed said upper edges being arranged in the segment of a circle the said fixed
die plates comprising two middle parallel plates, between which operates the said
reciprocating die, outer plates inclined toward the inner or middle plates and a
vertically-adjustable block carrying the said middle die plates, substantially as shewn
and described.
5. In a machine for bending and embossing sheet metal, the combination, with a
reciprocating die made of a thin plate, the lower edge of which is shaped to the design
to be embossed, of die plates having their upper edges formed to the design to be
embossed said upper edges being arranged in the segment of a circle, the said fixed
die plates comprising two middle parallel plates between which operates said recipro-
cating die, outer plates inclined toward the inner or middle plates, and means,
substantially as described, for adjusting the said outer die-plates, as set forth.
6. In a machine for bending and embossing sheet metal, the combination, with a
frame and a vertically-adjustable block carried thereby, of the spaced die plates G G',
the inclined die plates G G the die G being on the outer side of the die G and the
die G on the outer side of die G³, the movable die H above the dies G G', and the
adjustable gauge plate T secured to the table in rear of the block D, substantially as
herein shewn and described.
1000
Dated A 100
1000
B. J. BALDWIN, JR.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.