US 443154 A
Description (OCR text may contain errors)
O. L. WAGANDT.
LIP FOR COFFEE BOILERS AND METHOD OF MAKING THE SAME.-
No. 448,154. Patented! Dec. 23, 1890.
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7 UNITED STATES PATENT OFFICE.
CHARLES L. \VAGANDT,
OF BALTIMORE, MARYLAND, ASSIGNOR TO KEEN &
HAGERTY, OF SAME PLACE.
LIP FOR COFFEE-BOILERS AND METHOD OF MAKING THE SAME.
, SPECIFICATION forming part of Letters Patent No. 443,154., dated December 23,1890.
Application filed'Jnly 26,1890. Serial No. 360,097. (No model.)
To all whom it may concern:
. Be it known that I, CHARLES L. VVAGANDT, a citizen of the United States, residing at the city of Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Lips for Coffee-Boilers and Method of Making the Same; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
l leretofore lips for coffee-boilers and other vessels have been made with a flat turneddown or simply hemmed edge, and also with a wired edge. It has been proposed to obviate the objections of weakness and want of finish and of too great expense attending such constructions of lip by forming the lip with a hollow coil at its upper edge. This latter construction, however, was found difficult to manufacture in that the difference in the strains upon the sheet metal in the outer and in the inner walls of such roll or coil caused many of the lips to crack at the front and sharpest part of the bend, or become rough or puckered, resulting; in the uselessness or loss of a large proportion of the articles so made. Moreover, the crimping of the metal at this bend, which took place in the edge of the tin on the under side of the hollow roll, could not be concealed and rendered the lips unsightly and detracted from the finished appearance and merchantable value of the coffeeboilers to which they were applied.
It is the object of my invention to produce a neat and attractively-finished lip, which will also be of great strength and capable of always maintaining its shape, in making which there will be no liability to fracture of the metal at the sharp part of the bend or nose (or consequent loss of any of the articles) and in which the crimping of the metal at said bend will. be both more effectively performed and concealed from view. lVhile the edge is solid and finished in appearance, it is nevertheless open and can be thoroughly cleansed of dirt.
To these ends my invention consists in the improved construction hereinafter more particularly described and claimed.
In order to make my invention more clearly understood, I have shown in the accompanying drawings means for carrying the same into practical effect.
In said drawings, Figure 1 is a perspective View showing a lip embodying my invention applied to a coffee-boiler. Fig. 2 is a vertical sectionalview of the same detached. Fig. 3 is a sectional view of the lip on line 3 3, Fig. 2. Figs. 4 and 5illustrate the difference between my improved lip and a well-known previous form with a simple hollow coiled edge.
Referring to the drawings, A indicates the lip, and B a portion of a boiler to which the lip is applied. The latter may be secured to the boiler through the medium of its flange C6 in any desired manner, as by rivets or solder, or both. Along its upper edge and around its bend or nose the lip is provided with an outwardly and downwardly bent flange a. The sheet metal does not, however, terminate with the lower edge of this flange, but turns inwardly and upwardly, returning on a curve coincident with that of the flange at. There is thus formed an inner upwardly and inwardly extending flange ct ,.lying in contact with the flange a, and which terminates preferably at the under side of the top of the latter. The lip is thus provided with a double and practically solid and strong rim which terminates in appearance to the eye in a thick edge a". A very neat and attractive shape and appearance is thus given to the finished article by an inexpensive means, which, moreover, insures that in process of manufacture none of the articles shall be'damaged or lost by reason of the fracture of the sheet metal at the sharp part of the bend of the nose. The extreme edge of the sheet metal, in which a crimping necessarily takes place, is also concealed from view by being situated under the upper portion of the flange a.
The following is a description of the operation of forming the lip: After the flat blank is formed by a suit-able cutting-die the operator takes the blank and places it in between the male and female dies, the former adapted to the shape of the inner surface of the lip, and the latter adapted to the contour of the outer and convex surface. These dies are held in and operated by a suitable press.
The operator then trips the press, causing the female die to take the blank up to the male die, forming it into shape with the exception of the rim. 'hile thus held a punch with a concave channel comes down and rolls over the upper edge of the lip into an ordinary hollow or coiled bead, The punch still continuing to bear down upon the upper edge, the male die slightly moves so as to release the lip, which then falls about three-sin teenths of an inch, with the under surface of the bead upon a rounded projection on the female die. This projection is shaped to conform (allowing for the thickness of the solid edge to be produced) to the groove in the punch. The punch then continues its downward movement, compressing the hollow rim upon the projection and forming the complete lip with a solid double edge composed of the flanges a (L2. The lip is now released from the dies and falls into a suitable receptacle.
Having thus described my invention, what I claim is 1. The hereinde:;-'cribed method of making lips for coffee-boilers and other vessels, which consists in forming a suitable blank to produce the contour of the inner and outer surfaces of the lip, then curling over a hollow bead upon its upper edge, and then bending a portion of said head inward and upward to coincide with the other portion of the bead and form a double-flanged edge, substantially as set forth.
2. As an improved article of manufacture, the herein-described lip for vessels, shaped to conform to the vessel and provided along its upper edge and around the nose with a flange a bent downwardly and outwardly from the lip, and a flange a bent upwardly and inwardly from and coinciding with the flange a, said flanges constituting a solid flanged edge, substantially as set forth.
In testimony whereof I affix m ysignatu re in the presence of two witnesses.
CHARLES L. WAGANDT.
II. N. Low, 1). I I. CURRY.