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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.