US396540A

US396540A - Half to fred

Info

Publication number: US396540A
Authority: US
Publication date: 1889-01-22
Anticipated expiration: 1906-01-22

Description

(No Model.)

W.. A. CHASE.

INDICATOR FOR LAMPS, L'ANTERNS, m. No. 396.540. Patented Jan. 22, 1889.

w i/bvwweo UNITED STATES PATENT QFFICE.

VILLIAM ALONZO CHASE, OF MORRISVILLE, VERMONT, ASSIGNOR OF ONE- IIALF TO FRED. B. LIVINGSTON, OF SAME PLACE.

INDICATOR FOR LAMPS, LANTERNS, 84.0.

SPECIFICATION forming part of Letters Patent No. 396,540, dated January 22, 1889. Application filed March 21, 1887. Serial No. 231,724. (No model.)

To all whom, it may concern:

Be it known that I, XVILLIAM ALONZO CHASE, a citizen of the United States, residing at Morrisville, in the county of Lamoille and State of Vermont, have invented certain new and useful Improvements in Indicators for Lamps, Lanterns, &c., of which the following is a specification.

My invention relates to improvements in devices for indicating when an opaque lamp or other receptacle has been filled with liquid; and it consists in certain novel features, hereinafter described and claimed.

In the accompanying drawings, which fully illustrate my invention, Figure 1 is a vertical central sectional view of a lamp provided with my improvement. Fig. 2 is a perspec tive view of the perforated cylinder, and Fig. 3 is a vertical section of the same.

My IDX'GDEIOII is designed especially for application to lamps already'in use and of any and all designs.

In the annexed drawings, A indicates the body of a lamp having the feed-opening B in its top side, through which the oil is poured into the reservoir.

0 designates a tube or cylinder made of perforated material and having a closed lower end and an open upper end. The open upper end of the tube or cylinder is provided with the exterior screw-threads, G, by means of which it is secured in the feed-opening B.

\Vithin the perforated cylinder or tube I place a float, E, which is formed in the shape 3 5 of a six-pointed cubical cross, of cork, light wood, or other material which will float on the illuminating-fluid. This float is also coated with luminous paint, in order that it may be seen in the dark.

From the foregoing description, taken in connection with the accompanying drawings, it is thought the operation of the device will be obvious. The illuminating-fluid is poured through the feed-opening in the usual manner, and passes into the cylinder and through 5 the perforations therein into the reservoir or body of the lamp. As the oil rises the float will be carried upward, and when the lamp is full the upper point of the float will project through the feed-opening and notify the 'person using the lamp that a sufficient quantity of oil has been placed therein, as will be readily understood 011 reference to Figs. 1 and 3. I find that this form, while moving freely within the cylinder 1, floats higher 5 5 upon the oil than other forms or dispositions of the material of the float, and always presents a luminous point upward.

It will be seen that I have provided a very simple and efficient indicating device which can be readily applied to any style of lamp, and which can be manufactured and sold at a trifling cost.

I am aware that indicators have heretofore been provided for lamps; but I donotclaim such a device, broadly.

' Having thus described myinvention, what I claim, and desire to secure by Letters Patent, 1s

The herein-described indicator for lamps, consisting of a perforated cylinder or tube having a closed lower end and an open exteriorly screw-threaded upper end, and a luminous float within said cylinder in the form of a six-pointed cubical cross, substantially as specified.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

'IVILLIAM ALONZO CHASE.

'Witnesses;

JAMES C. ROBINSON, ASAHEL M. BURKE.