US174951A - Improvement in lamp-extinguishers - Google Patents

Description

F. H. FURNISS.

LAMP-EXTINGUISHER.

Patented March 21,1876.

N. PETERS. PHOTO LlTH UN .i'IfED STATES PATENT OFFICE.

FRED. H. FURNISS, or WATER'LOO, NEW YORK.

IMPROVEMENT IN LAMP-EXTINGUISHERS.

- Specification forming part of Letters Patent No. 174,95 1, dated March 21, 1876; application filed February 17, 1876.

To all whom it-may concern Be it known that I, FRED. H. FURNISS, of Waterloo, in the-county pt Seneca and State of New York, have invented a certain new and useful Improvement in Lamps; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, in which' Figure 1 is a central vertical section, showing the extinguisher raised or thrown back. Fig. 2 is an elevation of the wick-tube and extinguisher, showing the latter depressed. Fig. 3 is a view at right angles to Fig. 2. Fig. 4 is a detail view.

My improvement relates to devices for extinguishing the flame in a lamp, and is of that kind known'as. automatic or self-acting, in which the extinguisher is closed by a springrod.

The invention consists in the special construction of the extinguisher, and also in a screw-coupling in'the extinguisher-rod, as hereinafter described.

A is the ordinary wick-tube of a lamp. B is the extinguisher attached thereto. The connection is made by a pivot, a, secured on one side of the wick-tube, which enters a slot,

11, in each arm of the extinguisher. This slot is shaped so that the extinguisher first turns axially up over the wick-tube, and then falls vertically thereon, so that the concave head or cap 0 of the extinguisher shuts down close- 1y over the end of the wick-tube, and thereby extinguishes the blaze.

When open, the extinguisher stands horizontally back from the wick-tube, as shown in Fig. 1; when closed, it stands vertically downward, as shown in Fig. 2.

O is a rod, which passes down vertically through a tube, 01, formed in the lamp body, and into the base f. At the top it is jointed to an axis, g, which turns in projecting lugs h h of the extinguisher. At the bottom the rod has a shoulder, i, and above this is a coiled or other spring, is, resting in the base of the lamp in such a manner as to bear against the shoulder i, and thereby press the rod 0 down.

When the lamp rests upon a table or other support, the rod 0 is pressed upward by the contact, thereby compressing the spring and throwing the extinguisher into the horizontal or open position shown in Fig. 1. When the lamp is raised or disconnected from its support the rod is thrown down by the spring, thereby turnin g the extinguisher up and dropping it in place over the wick, as shown in Fig. 2, extinguishing the'blaze.

A screw-joint, Z, is made in the rod 0 between the lamp-body and the burner, for the purpose of disconnecting the rod to unscrew the cap when necessary.

My invention differs from other automatic or self-acting devices of the kindin the use of an extinguisher made in one piece instead of two, by which means it is not only cheaper and simpler, but is also more efficient in action. Ordinarily these extinguishers are attached at the opposite edges of the wick-tube, and turn up in the line of the major axis, meeting in the center, having, in that case, only the simple hinge movement. Mine turns in line with the minor axis, and has not only the hinge-movement, but also a vertical sliding movement. By this means the concave cap of the extinguisher is brought down with pressure upon the end of the wick, being thereby sure to extinguish the light, and also serving to close and tighten the end of the wick-tube, which the old style wiH not do. In these respects it is greatly'superior to any other device of the kind with which I am acqainted.

Another special feature of advantage is the serew-couplingl of the rod, between the lamp- -body and the burner, by which the burner can be easily separated from the lamp. The

lamp can be raised and carried at any time by grasping the rod 0 with the standard 01" the lamp so firmly that it cannot slip.

I design to combine with' the spring-rod and the spur-wheel, which raises the wick, a con-' nection by which, when the rod springs downward to extinguish the blaze, the wick will also be turned down in the tube, so as not to interfere with the extinguisher. A simple 1ever and crank-pin will answer the purpose.

I do not claim, broadly, a self-acting lampextinguisher; but

I claim-- L'lhe combination, with the spring-rod G, 1

l and shoulder 'i, and aeted on by the sprin g k, as and for the purpose specified.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

FRED. H. FURNISS. Witnesses:

M. B. CHAMBERLAIN, W. W. WOOLEDGE.

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