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Патент USA US2125107

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“My 26» 1938»
'
_
K. GKNTERI ET AL
2§m5¢w7
ORNAMENTATION AND DECORATION OF SHEET METAL ARTICLES
‘Filed March 18, 1938
3 Sheets-Sheet l
'
M
a
INVENTOR
KARL GINTER
26
EODOR G1
~
Z6
'
B
" /
‘
I '
éWY 26» 1933.
K; GINTER ET AL
2,125,197
ORNAMENTATION AND DECORATION OF SHEET METAL ARTICLES
Filed March 18, 1938
‘
5 Sheets-Sheet 2
INVENTOR
KARL GINTER
THEODOR G/NT-E
ATTORNEYS
July 26, 1938.
y K, G‘NTER E1- AL
2,125,1W?
ORNAMENTATION AND‘ DECORATION OF SHEET METAL ARTICLES
Filed March 18, 1958
3 Sheets-Sheet 3
INVENTOR
KARL. GINTER
B"$115000? GINT
ATTO RN EYS
_
Patented July 26, 1938
2,125,107 ,
UNITED STATES
PATENT OFFICE -
2,125,107
ORNAMENTATION AND DECORATION OF
SHEET METAL ARTICLES
Karl Ginter and Theodor Ginter, New York, N. _Y.
Application Marchv 18, 1938,‘ Serial No. 196,714
‘
6 Claims.
(Cl. 113-52)
The present invention relates to a method of
decorating and ornamenting sheet metal articles
and particularly relates to a method for deco
rating and ornamenting sheet metal articles, the
5 surfaces of which are curved or constitute sur
of irregular or sinuous or other nature may be
applied to the surface of the sheet metal articles
without increased expense and with assurance
that the ornamented or sheet metal article may
be readily removed after decorating operation
without the necessity of making a'multi-part
faces of. revolution.
Although not restricted thereto, the present
invention will be particularly directed to the
' ornamentation of spherical or hemi-spherical
mold.
'
'
Other objects will be obvious or will appear
during the course of the following speci?cation.v
10 surfaces, spheroids or hemispheroids, ellipsoidal
In accomplishing the above objects, it has been
surfaces, parabaloid surfaces, hyperboloid sur-. found most suitable to provide a‘ base structure
faces, conical and conoid surfaces and valso vari
15
of metal such as cast iron, wood or other tough
material which may either have a cavity or pro
ous combinations of these aforementioned sur
faces with the curvature extending in either two “ jections of substantially'the same shape as the hollow sheet metal article before decoration.
or three dimensions.
.
Sheet metal articles of the character above
The male or female portion of. this base is
preferably devoid of all irregularities, protuber
described and having surface revolutions involv
ing one or more of'the above speci?c surfaces,
cannot be readily stamped out in a single stamp
20 ing operation from ?at metal stock without con
struction of very expensive and ‘complicated multi
piece molds and even if the articles be drawn,
""s'stamped or otherwise formed, it is most di?lcult
to ornament them without the‘ employment of_
25 most expensive and complicated die construc
.
>
.tions.
,
'-
'
These difficulties are particularly apparent
'
when it is desirable to apply relatively shallow
' ornamentation in the surface of these curved
30 hollow articles due to the fact that dies for this
purpose must be engraved or cut by hand at
great expense and with great cost with the result
ances, recesses or embossments and is smooth to
conform in contourand in its surface of revo
lution to the contour and surface of revolution 20
of the curved metal hollow article or blank.
The hollow metal article should preferably ?rst
be drawn, shaped or otherwise formed of sheet .
metal, for example of brass,. copper, aluminum,
zinc, iron or magnesium plate which may vary 25
from '3‘: to 11; of an inch in thickness and, at all
times, be preferably substantially less than 1A; of
an inch in thickness.
_'
'
'
The base element, if it be female, should prefer
ably be slightly larger than the sheet metal
articleso that a die plate may be inserted be
tween the hollow sheet metal .article and the
-,that the form and shape of the ornamentation, recess in the base forming the female element.
cannot be readily changed without increasing 7 Where, however, the base is the male element,
the expense with substantial delay before the
ornamented articles may be actually put upon the
market after they have been ordered.
‘
' It is among the objects of the present inven
tion to‘ provide an improved and inexpensive
“process for ornamenting and decorating hollow
sheet metal articles of the character above de
scribed at decreased expense and with decreased
' time elapsing between the time of the order and
the time of delivery, without the necessity of
constructing expensive dies.
Another objectv of the present invention is to
provide an improved decorating or ornamenting
process for hollow ware of the character above
described by which it may be possible to obtain
.50 a wide variety of di?erent shapes and designs
with only slight modi?cations of the male or
female die element.
.
A further object is to provide an improved deco
rating process and a die to beutilized therein in
~55 which unusual reentrant or curved decorations
the base‘ should ‘be somewhat smaller than the 35
formed or shaped, decorated or undecorated ar
ticle, so that there will be su?iclent space for the
placement of a perforated die. plate between the
male base and the interior side oruconcav'ity
of the hollow sheet metal article.»
40
The die plate which formsan essential feature
of the present invention consists of a- relatively
thin sheet metal article of the same contour as
the male or female element on the base and has
the hollow curved _sheet metal article and it is
preferably of the same order of thickness as the
hollow sheet metal article to be decorated or
ornamented, although it may be substantially
thicker and may vary ‘in ‘thickness from a‘; to
1.8 inches, the thickness of. the die plate varying 60
with the depth of the ornamentation which it is
desired to produce.
‘
'
This die plate is pierced, -, perforated
'
or cutv
throughwith the form-of ornamentation which
it is desired to produce in the hollow article so 55
2,125,107
2
that the base itself will form part of the die
face in the area corresponding to the perfora
tions.
7
Preferably, the die plate should only be con
nected to the male or female elements of the base
at its periphery and should be devoid of connec
tion over the entire area which is designed to be
Figure 13 is a transverse sectional view of the
combination of the die plate, base, and hollow
sheet metal article before ornamentation. Fig
ures 14 and‘ 15 are respectively top and side views
of the hollow metal articles of Figures 8 and 9,
applied to the hollow sheet metal article.
At the same time, the piercing or perforation
10 upon the die plate is carried out in such a man
ner that the die plate has spaced narrow metal
bridges which will have sufficient resiliency that
when the pressure is released after the forming
operation, the die plate will reject or dislodge the
decorated or ornamented article.
15
'
.
In the most desirable construction, the die plate
over its entire area closely contacts with the male
or female portion of the base so that when the
after ornamentation.
,
.
Figures 16 to 24 illustrate various types of hol
low sheet metal articles which may be decorated
by a male die construction and various types of
perforated or pierced die plates which may be 10
utilized in connecti n therewith.
In Figures 16 to 2 Figures 16, 19 and 22 illus
trate the drawn or shaped hollow sheet metal arti
cles or blanks before ornamentation or decora
tion; Figures 17, 18, 20, 23 and 24 illustrate the 15
sheet metal articles after they have been orna
mented; Figures 17A, 18A, 20A, 23A and 24A'illus
trate the die plates which may be utilized in mak
ing these ornamented surfaces; and Figure 21 is
a diagrammatic longitudinal cross sectional view 20
thebase and there will be no tendency for the ' of the die structure, showing the plate and hol
die plate at all to collapse against the base as low sheet metal article positioned thereon before
die plate is pressed against the base each part of
20 it will closely contact with and be pressed against
' would happen if there were embossments or pro
tuberances therein by which portions of the die
25 plate would be separated away from the base.
In certain less preferred forms the ornamenta
tion on the die plate would be provided by cutting
through the die plate partly instead of by the
piercing or perforation above described, or strips
30 of metal or other embossments or protuberances
may be soldered or deposited upon the surface of
the die plate.
These‘constructions, however, are not preferred
35
decorating or ornamenting.
,
Referring particularly to Figures 1 to '7, the
sheet metal article A is shown as of hemi-spheroid 25
or hemi-ellipsoid form with a curved side I0 and
a ?at base II, the desired ornamentation to be
applied across said curved side I0, and to extend
partly onto said ?at base | I.
The die plate B has a base portion I2, the re 30
cesses, depressions, piercings or perforations I3
corresponding to the ornamentation which is to _
be produced.
The piercings or openings I3 are
and the preferred construction includes the pierce - separated by the thin narrow bridges l4 and with
the outer rim I5 having openings H5 at a point 35
ing of the die plate to form flowered, curved, sinu
beyond the periphery |‘|A of the hollow ware A
ous, circular, ?gured, animate, inanimate, geo
when inserted thereinto. '
graphical, architectural, or other designs.
p The base 0 is provided with a hollow having a
In the drawings are shown several preferred
embodiments‘ of the present invention to which, flat bottom |'| conforming to the ?at bottoms H
40 however, the invention is by no means limited,
since these embodiments are shown merely by
way of illustration and not by way of limitation.
In the drawings:
Figure 1 is a top view of the hollow sheet metal
article of hemispheroidal or ellipsoidal shape be
45
fore ornamentation or decoration.
Figure 2 is a top view of one form of perforated
die plate which may be employed for ornamenting
the hollow sheet article of Figure 1.
Figure 2A is a fragmentary cross sectional view
50
upon enlarged scale upon the line 2A-A of Fig
ure 2.
-
Figures 215 and 2C are similar cross sectional
views as Figures 2A of alternative constructions.
Figures 3 and 4 are respectively side sectional
views upon the lines 3-3 and 4-4 of Figures 2
I and 3.
Figure 5 illustrates a die combination of a base
die, a perforated die plate and hollow sheet metal
article before forming, the die construction being
of the female type.
Figures 6 and '7 are respectively top and side
views of the article which may be formed from the
plate of Figures 1 and 3 by use of the perforated
die plate, as illustrated in Figure 5.
Figures 8 to 15 illustrate an alternative blank.
die base and die plate, Figures 8 and 9 being re
spectively top and side sectional views of the hol
low sheet metal article before ornamentation;
70 Figure 9 being taken on the line 9—9 of Figure 8.
Figures 10 to 12 illustrate the die plate construc
tion to be utilized in connection with the‘ blank of
Figures 8 and 9, Figures 10, 11 and 12 respectively
being a top view and side sections upon the lines
75 ||—|| and |2—|2 of Figure 10 of the die plate.
and I2 of the elements A and B and with the 40
curved sides l8 conforming to the curved sides of
the hollow ware A and the curved bridges H of
the die plate B.
.
The contour of elements A, B and C is substan
tially identical and these elements are substan
tially of the same volumetric content.
45
~
Referring to Figure 5, it will be noted that the
edge of the recess in the base C is curved at H)
to conform to the curve of the rim l5 of the die
plate B and under said curved rim, the base is
provided with the tapped holes 20 which receive
the screws 2| extending through the openings IS
in the die plate B.
It will be noted from Figures 2A and 5 that
the die plate closely contacts with the hollow
or recess in the base C, as indicated at 22' and
23, so that there will be a full support of the
die plate B by the base C during the forming
operation.
Although the edges of the bridges l4 maybe
rounded, as indicated at 24, they may also be
pointed, as indicated at 25 in Figure 2B and
preferably they should not be recessed, as indi
cated at 26 in Figure 20, since this may tend
to permit the edges of the bridges M to collapse
toward the smooth unornamented and‘ undeco
rated die base recess indicated by the numerals
l1, l8, in Figure 5.
I
It will be noted that the die’ plate is ?xedly
attached at 2| to the base '0 but is devoid of 70
attachment inside of the screws 2| so. that there
may be a slight resilient movement between the
bridges l4 and the recess l1 and I8 which would
occur-during pressure application upon the plate
A and would cause the plate A to be ejected or 75
3
2,125,107
pushed'out of the recesses corresponding the
piercings l3, afterthe pressure has been released.
form shown, it is desired that these ornamenta
tions have less depth than the main ornamenta
This ejection or automatic release of the deco
rated plates occurs along' the curved bridges It
tion which corresponds to the perforations 49.
or along the curved piercings or along narrow
curved metal bridges, as shown at l3 of Figure 2,
and in the other die plate structures to be sub
sequently described.
'
If desired, before‘the plate A is inserted in
the die structure of Figure 5, consisting of the
base C and the die plate B, a form may be cast
or taken from the combination of the die plate
B and the base C. This casting may be utilized
after suitable alignment to cause the metal, in
15 dicated at 21, to collapse into the recesses 28
bossments 53 while the rest'is being collapsed
into the piercings 49 and recesses 5| and 52.
In the similar manner, as previously described,
the metal portions 55 may be collapsed into the
openings 56, as indicated in Figure 13, and into 10
the piercings or recesses 49, 5| and 52 of Fig
ure 10.
1
.
As a result, the ?nished article, as shown in
Figures 14 and 15 ,will have the embossed stripes
60, the slightly recessed ?owered design iii, the 15
with the resultant formation of the depressions
29‘and the ridges 30 in the ornamented plate of
slightly recessed stripes B2 and the deeply re
cessed stripes 63. These deep recesses 63 extend
Figures 6 and 7.
at 64 on to the base 31.
a
.
This will give a very sharp outline correspond
20 ing to the piercings or perforations I3 of the die
_
Figure ldshows'conical form A2 having the
smooth conical sidewall 15, a vertical rim 16 20
plate B. 'If a softer outline is desired, a rubber
and a stepped cut off peak 11.
’mat may be pressed under high pressure into
The structure A2 is designed to be utilized in
connection with the die plates B20 and B21 of
’ the recess in Figure 5 in the ‘direction indicated
by the arrow 3| to give 'the decorated object 0
It will be noted that the portions 29 of the
decorated plate A of Figures 6 and 7 are col
curvature exactly to the blank A2 and the sides
15 thereof.
lapsed against the portions of the recess l1, l8,
in the die base 0, which are exposed by. the
30 perforations, openings or recesses IS in the die
plate B.
,
1,
Figures 17A and 18A-and a male base structure
C2. (Figure 21.) The male die base structure 25
C2 is smooth at 89 to conform in contour'and
25 ‘Figures 6 and 7.
It will be noted that the perforated die plate
elements B20 and B21 are provided with conical 30
side surfaces 78 and ‘I9 closely conforming with
.
It is readily apparent that many different types
the side- surfaces 80 of the base C2 and Y15 of the
of die plates B may be utilized with other forms
blank A2.
of decoration or ornamentation or piercing or
40
At the same time, it is also possible to elevate
part of the metal of the blank A’ by the em
'
'
The lower portions 8| and B2 of .the die plate
recessing as, is subsequently described in con
‘elements B20 and B21 are provided with the‘ open
nection with the other embodiments.
In Figures 8 and 9, the hollow article is shown
of conoid shape with the sides of the cone being
somewhat concaved as best shown at 35 in Fig-
ings 83 and 84 which enable these conical guide
plates to be screwed onto the base C2, as indicated by the ‘screws 85 in C2.
as
It win be noted that the die plate elements’ ‘
B20 and B21 are pierced, as indicated ~at 86 and 40
ure
The
9. conoid A'- is provided'with
a
. a vertical rim
81 with the result that when the blank A2 is
36 and a ?at base 31. -The die plate shown in _ placed over the combination of the base C2 and
Figures 10 to 12 is provided with a ?at base 38 the die plates B20 or B21, the metal of the cone
, corresponding to the ?at base 31 of the hollow 15 will be collapsedinto the recesses formed by
metal article A’ and with the curved sidewalls said piercings and against the exposed portions, 45
39 conforming in curvature ‘and contour to the of the face!!!) of the base element C2. _
'
side walls 35 of the hollow metal article A’. The
To form the depressed ornamentation 90 and
straight vertical wall“ of the plate B’ con
9| respectively, as shown in Figures .17 and 18.v _
forms closely to the vertical portion 36 of ‘the the narrow spiraloid curved bridges or vanes 92
article A’. The outwardly extending ?ange 4| of Figure 17A are particularly valuable in eject 50
)
of the plate B’ has the openings 42-which receive ing or releasing the decorated form of Figure 17.
the screws 43 (see Figure 13) extending into
It willibe noted that the piercings 86 of Fig
the tapped recesses 44 in the base 0'.
ure 17A are of such a nature that if a die were
The base C’ is provided with a ?at bottom _ formed, considerable di?iculty would be experi
portion 45 corresponding to the portions 31 and enced in releasing the decorated article, as indi 55
38 of the article A.’ and the die plate 3' with cated in Figure 17. By the device of the present
a curved side portion 46 corresponding closely application, the resiliency of the curved vanes
in contour and curvature to the curved‘ side - 92 automatically releases the decorated article.
portions 35 of the article A’ and, 39 of the die
The decoration 99 and 9| of Figures 17 and 18
60 plate B’. The vertical side portions 41 corre
may be applied, as indicated in Figure 21, by 60
spond closely to the vertical rim portions 36‘of spinning the base‘ C2 upon a shaft '93 with the
the article A" and 40 of the die plate B’.
i
die plates B2" or B21 in position thereon. A
The top 48 of the die base C’ receives the
?ange 4! of the die plate B’.
‘
The die plate is provided with the recessed
piercings or perforations 49‘ which extend at 50
into the base 39 thereof, with the depressed or
recessed engraved portions 5|, and 52 which do
not extend all the way through. the-die plate
B", and with ‘the soldered embossments or eleva
tions 53 which consist of strips of metal welded
or soldered onto the curved side faces 39 of the‘
die
plate
B’.
,
‘
'
v
.
,
~
If desired,'the ?owers 52 might be pierced all
the way through the die plate B’, but in the
wooden object or other, device may be pressed
against the die blank A? duringythe spinning op
eration.
-
‘
as,
The bridges 94 of Figure 18A also have a re-7
silient releasing action similar to, but not as -
strong as that of the bridges 92 of Figure 17A.
' Referring to the conical blank A3 with the 70
conical side 95, the die plate B3 is provided with
a conical surface 96 closely conforming to that
of 95 and with the piercing 91 forming the re
leasing bridges 98.“
,
.
The rim 99 is provided with holes I00 to hold 75
2,125,107
4
l the die plate B3 upon a conforming base similar
to that shown at C2 of Figure 21.
, When the blank A3 is placed over the die plate
per square inch may be' employed depending‘
upon the thickness of the material.
Without an intermediate rubber mat, how
B3, which in the meanwhile has been placed, ever, the pressure may be substantially lower
upon a conical base, the spinning operation will and vary from 400 to 2,000 pounds per square
cause the metal of the blank A3 to collapse into inch.
the piercings 91 forming ornamentation i0l,~
illustrated in Figure 20.
An important feature of the present invention
resides in the fact that the die plate is support
The blank A4 of Figure 22 takes the form of
ed over its entire area, where it has not been
a die base of conforming shape and with the
to the interior or exterior of the die plate, so
, pierced, by the die base which closely conforms
10 a hemisphere and it is designed to cooperate with
pierced die plates 1340 or B41.
The blank A4 has a hemispherical surface
conforming to the hemispherical contour I l I and
15 H2 of the pierced die plates B“ and B41.
‘The piercings H3 and H4 leave the bridges
that substantially no collapsing or deformation
of the die plate can take place and so that, the
die base and the die plate act together as a unit
H5 and H6 which act as resilient releases in
the manner previously described.
'
The die plates B40 and B“1 are attached to the
20 die base by screws extending through the holes
H1 in the rims H8 and they are of the same
volume, shape and contour as a conforming re
cessed female element or a projecting male element, constituting the die base.
25
-
After the spinning or forming operation, the
blank A4 will receive the ornamentation I20 or
III with the metal constituting the side H0
thereof collapsing into the piercings H3 and H4
and against the exposed portions of the smooth
30 conforming male or female face of the die base.
The die plates shown in Figures 17A, 18A, 20A,
23A and 24A, which are designed to be utilized
upon a spinning element, as indicated in Figure '
21, may also be termed chuck or forming plates,
35 if desired, instead of die plates,
‘1
It is thus apparent that the present appli
cants have provided a simple, inexpensive die
construction including a readily replaceable die
plate in which the piercings may be cut by a
40 saw, file or other means to give a desired orna
mentation or decoration to a conforming sheet
metal blank.
'
-It will be noted that the die base is on the
interior and the blank is on the exterior when
45 the male die construction is employed, as for
example, in connection with a spinning opera
tion, while the blank is on the inside and the
recess of the female die element is on the outside
and a pressing or- molding operation is employed
50' for the decoration.
In all cases, the perforated, engraved or em
bossed die plate is inserted between and closely
' conforms to the blank and female recess or male
projection of the die base in contour, curvature,
die to form or decorate the various blanks hav
ing the surfaces of revolution.
'
'
_The present application is a continuation in
part of application, Serial Number 87,432, ?led ~
June 26, 1936.
It is apparent that the speci?c illustrations
shown above have been given by way of illus
tration and not by way oifilimitation and that the
structures above described are subject to wide
variation and modi?cation without departing
from the scope or intent of the invention, all of
which variations and modi?cations are to be in
cluded within the scope of the present inven
tion.
’
What is claimed is:
1. A forming construction for decorating and 30
ornamenting the curved and inclined surfaces
of thin hollow sheet metal articles and blanks
of conical, spherical, ellipsoidal and similarly
shaped articles comprising a base having a
smooth unornamented and undecorated confor
mation of substantially the same shape and con
tour as the portion of the sheet metal article
and blank to be decorated and ornamented and
a forming plate having one side closely conform~
ing to and contacting and being supported by
said conformation over its entire area, said plate
having piercings corresponding in shape to the
desired decoration and. ornamentation to bepro
duced upon said article or blank, the thickness '
of said plate being substantially the same as
the height of the desired decoration, said blank
being collapsed into the piercings -to form the
ornamentation, said article or blank, plate and
conformation all having substantially the same
volume, contour and curvature.
2. A die construction'for decorating and or
namenting the curved and inclined surfaces of
thin hollow sheet metal articles and blanks of
conical,
spherical,‘ ellipsoidal
and similarly
shaped articles comprising a die base having a
>
55 shape and volume.
Generally, the bridges between the piercings ' smooth unornamente'd and 'undecorated confor-'
should always extend over the curved surfaces mation of the same shape and contour as the
of revolution or conical or spherical contours so sheet metal article and blank to be decorated and
ornamented and a die‘ plate having one. side
as to form the resilient releasing bridges afore
closely conforming to and contacting and being 60
described, which will automatically release the
ornamented article after the forming operation.
The die plates preferably should be of harder
material than the blanks and they also may be
of greater thickness than 'the blanks. Their
65 thicknesses give an accurate control of the depth
of the embossing-effect obtained as a result of
the ornamentation process.
'
The blanks themselves, which are formed, may
consist of thin sheet metal-preferably relatively
70 soft and thinner than the die plate material
and they may be of. copper, brass, zinc, pewter,
silver, aluminum and steel plate varying from 1/04‘
to 11; of an inch in thickness.
Where a rubber mat is utilized for the decorat
75 ing operation, a pressure from 500 to 5,000 pounds
supported by said conformation over its entire
area, carrying relatively depressed and elevated
portions .of the same character as the decora-'
tion and ornamentation to be .produced upon
said article or blank, said blank being collapsed
into the depressed portions to form the ornamen
tation, said article or blank, die plate and con
formation all having substantially the same vol
ume, contour and curvature, said depressed por
tions consisting} of piercings extending through 70
said die plate. ~
I
'
3. A die construction for decorating and or
namenting thecurved and inclined surfaces of
thin hollow sheet metal -articles'_and blanks of
conical,
spherical, ellipsoidal
and similarly
5
- 2,125,107
shaped articles comprising a die base ‘having a
smooth unornamented and undecorated confor
mation of the same shape and contour as the
sheet metal article and blank to be decorated and
ornamented and a die plate having one side
closely conforming to and contacting and being
shaped articles comprising a base having a
smooth unornamented and undecorated confor
mation of substantially the same shape and con
tour as the portion of the sheet metal article
and blank to be‘ decorated and ornamented and
a forming plate having one side closely conform
supported by said conformation over its entire
ing to and contacting and being supported by
area, carrying relatively depressed and elevated
said conformation over its entire area, said plate
portions of the same character as the decora
having, piercings corresponding in shape to the
10 tion and ornamentation to be produced upon said
article or blank, said blank being collapsed into
the depressed portions to form the ornamenta—
tion, said article or blank, die plate and confor
mation all having substantially the same volume,
15 contour and curvature, and elevated portions
being formed by thin releasing bridges formed
by piercing the metal of the die plate.
4. A chuck construction for‘ decorating and
ornamenting the curved and inclined surfaces
20 of thin hollow sheet metal articles and blanks
of conical, spherical, ellipsoidal and similarly
shaped articles comprising a base having a
smooth unornamented and undecorated con
formation of substantially the same shape and
25 contour as the portion of the sheet metal article
and blank to -be decorated and ornamented and
a chuck plate having one side closely conforming
to and contacting and being supported by said
conformation over its entire area, carrying rela
30 tively depressed and elevated portions of the
10
desired decoration and ornamentation to be pro
duced upon said article or blank, the thickness
of said plate being substantially the same as
the height of the desired decoration, said blank
being collapsed into the piercings to form the or
namentation, said article or blank, plate and
conformation all having substantially the same
volume, contour and curvature, the bottoms of
said piercings being formed by the smooth con- '
formation.
6. A forming construction for decorating and 20
ornamenting the curved‘v and inclined surfaces
of thin hollow sheet metal articles and blanks
of conical, spherical, ellipsoidal and similarly
shaped articles comprising a base having a
smooth unornamented and undecorated confor 25
mation of the same shape and contour as the
sheet metal article and blank to be decorated
and ornamented and an interchangeable chuck
plate having one side closely conforming to and '
contacting and being supported by said confor
30
same character as the decoration and ornamen
mation over its entire area, said- plate having
tation to be produced upon said article or blank, ' piercings corresponding in shape to the desired
said blank being collapsed into the depressed
portions to form the ornamentation, said article
35 or blank, plate and conformation all having sub
decoration and ornamentation to be produced
upon said article or ‘blank, the thickness of said
plate being substantially the same as the height
stantially the same volume, contour and curva- , of the desired decoration, said blank being col
ture, the depth of the depressed portions being
about the same as the thickness of the metal
of the article or blank, said depressed portions
being formed by piercings extending entirely
through the forming plate.
'5. A forming construction for decorating and
ornamenting the curved and inclined surfaces
45
of thin hollow sheet metal articles and blanks
of conical, spherical, ellipsoidal and similarly
lapsed into the piercings to form the ornamen
tation, said article or blank, chuck plate and
conformation all having substantially the same
volume, contour and curvature, said chuck plate 40
being provided with means beyond said piercings
to enable it to be ?rmly attached to said base.
KARL GINTER.
THEODOR GIN'I'ER.
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