US437947A

US437947A - Coach-lamp flange

Info

Publication number: US437947A
Authority: US
Publication date: 1890-10-07
Anticipated expiration: 1907-10-07

Description

(No Model.)

0. W. SWIFT.

COACH LAMP FLANGE.

No. 437,947. Patented Oct. 7, 1890.

UNITED STATES PATENT ()FFICE.

ORRIN W. SWIFT, OF NEW HAVEN, CONNECTICUT.

COACH-LAMP FLANGE.

SPECIFICATION forming part of Letters Patent No. 437,947, dated October '7, 1890.

- .Application filed June 4, 1889- Serial No. 313,056. (No model.)

To aZZ whom it may concern:

' New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Coach-Lamp Flanges; and I do hereby declare the following, when taken in connection with accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a front view of a flange complete; Fig. 2, a horizontal section through the blank; Fig. 3, a horizontal section through the flange complete; Fig. 4, a modification in the formation of the flange; Figs. 5 and 6, detached views, enlarged, to illustrate the application of the bead; Fig. 7, a side view of alamp, showing the flanges as attached.

This invention relates to an improvement in the construction of the flange which surrounds the glass of a coach-lamp. These are usually of a flaring shape and so as to give an ornamental appearance to the lamp. The flanges are usually constructed in pieces corresponding to the respective sides of the flangethat is, if it be square the flange is made in four pieces, each forming one side, the pieces brought together at the angles and secured by solder or otherwise. To thus make the flange in parts, form perfect angles, and solder them together, requires the very nicest of workmanship and adds very greatly to the cost of the lamp.

The object of my invention is to produce such flanges for coach-lamps in a single piece and produce a more perfect finish at the angles than can be accomplished when the flange is made in several parts; and it consists in the construction,as hereinafter described, and particularly recited in the claims.

In producing my improved flange I take a piece of sheet metal of the required size, and by the employment of suitable dies strike it into cup shape, as seen in Fig. 2, a forming the back or bottom of the cup and b the side walls. The shape of the walls of the cup circumferentially correspond to the shape required for the flange-that is to say, if it be square, as seen in Fig. 1, four sides are produced; if hexagonal, six sides, and so on, or

whatever the shape required may be. The cup thus produced is of that shape. The side walls have the required flare forthe flange. The size of the bottom corresponds to the size of the opening which the flange is to surround. By thus striking up the cup-shaped blankI am enabled to produce the angles of the sharpest and most clearly-defined character. After this cup-shaped blank has been completely produced, the bottom a is cut out by suitable dies, as seen in Fig. 3. The flange is then complete. Its angles will be perfectly formed, and the shape of the complete frame will be as perfect as the dies which produce them.,

None of the irregularities which follow the formation of the flange from several pieces can occur, and as the difficulty of forming the joints and making the connections are avoided the cost of the flange is but a fractional part of that of the usual construction.

The outer edge of the flange is preferably curved outward to form a bead-like edge d. This may, however, be flat, as represented in Fig. 4. v

To strengthen the flange, one or more 0&- sets a are formed therein. These offsets, running lengthwise of the respective sides, have the effect of corrugations in the metal and increase its strength laterally to a very great extent, and also add to the ornamental efiect of the flange.

The extreme outer edge of the flange may be turned into a plane parallel with the plane of the flange, as seen in Fig. 2, forming a surrounding flange-like edge f. (Seen enlarged in Fig. 5) Then onto this flange-like edge a metal bead g is placed. This bead is made in the form of a tube (see Fig. 6) with a longitudinal slit 19 therein, which corresponds to the edge f, and so that this tube cut into lengths corresponding to the respective sides of the flange, may be set thereon, the ends being mitered, as represented in Fig. 1. These beads may be soldered upon the back side to secure them in place. This bead gives a neat finish to the outer edge of the flange and-at the same time adds strength thereto to resist force which may be accidentally brought thereon.

These flanges may be produced as articles of manufacture to be sold to manufacturers of coach-lamps. In Fig. 7 I represent a side view of a lamp, showing the flanges thereon.

I do not wish to be understood as claiming, broadly, a carriage-lamp flange made in a single piece of metal, as such, I am aware, is not new; neither do I wish to be understood as claiming, broadly, the application. of an open-sided tubular bead to the edge of a flaring lamp-flange, as such, I am aware, is not new.

I am also aware that a tubular bead having a longitudinal slit formed therein so asto set onto the edge of a flange, broadly considered, is not new; and therefore do not claim, broadly, such an arrangement of a bead.

I claim- 1. The herein-described flange for coachlam'ps, consisting of several sides forming sharp angles at the junction of the said sides,

the'sides of the flange flaring outwardly, and all made integral from a single piece of sheet metal, substantially as described.

2. A flange for coach-lamps, composed of several sides, the junction of the said several sides forming sharp angles, the sides flaring and constructed with one or more offsets e, the said offsets running longitudinally of the respective sides, and the said sides all made integral from one piece of metal, substantially as described.

3. A flange for coach-lamps, composed of several sides, forming sharp angles at the junction of the sides and the said sides made integral from a single piece of sheet metal, the sides flaring, the outer edges of the sides terminating in a flange f in a plane substantially parallel with the plane of the flange,

adapted to receive a tubular bead, substantially as described.

ORRIN W. SWVIFT.

\Vitnesses:

JOHN E. EARLE, FRED O. EARLE.