US70125A - Improvement in lamp-extinguishebs - Google Patents

Description

L. M. SARGENT,

I Lamp Extinguisher. No. 70,125. PatentedOct. 22, 1867..

I 5M i W n W '1 a l 1 1166666 W H v mm. PHOTO-LITHOGRAPHER. WASHINGTON. BIC,

LUCIUS l\I. SARGENT, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO W. A. RICHARD- SON, HENRYD. WARD, AND GEORGE A. GATES, OF THE. SAME PLACE.

' Letters Patent N. 70,125, dated October- 22, 1867; antcdatecl October 19, 1867.

' IMPROVEMENT IN LAldP-EXTINGUISHERS.

'Cilgr soon-e march to in tlgrstjiirtttts 33mm zmt mating part at flgc time.

To ALL WHOM IT MAY CONCERN:

Be it known that I, LUCIUS M. SARGENT, of Worcester, in the county of Worcester, and State of Massa chusetts,'have invented certain new and useful Improvements in Lamp-Extinguishers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a. portion of this specification, iriwhich- Figure 1 is a plan or top view of the lower portion of a lamp-extinguisher constructed according to my invention.

Figure 2 is a side view of such extinguisher.

Figure 3 is a vertical transverse section of the lower portion of the same.

Figure dis a detached view of a portion of the same.

Similar letters of reference indicate corresponding parts in all the figures.

This invention may be considered as an improvement upon the lamp-extinguisher which is the subject of Richardson and Ward's patent, hearing date April 3, 1866, and its object is to insure the more convenient and inexpensive attachment of the extinguisher to the lamp-burner, and also to increase the facility with which the; wings of the device may be operated to extinguish the'fiame, or be brought to and retained at a suitable distanceapa1't to permit the lamp to burn. The invention consists in the arrangement of the wings-of the extingui sh er and the stems operating the said wings upon a base-plate, which is constructed to slide over the wicktub e and rest upon the central portion of the base of the burner, whereby the extinguisher may be cheaply manufactured, and be permanently attached to the lamp with very great convenience. The invention further consists in a stud or stop so combined with the wings of the extinguisher, and the arms and springs operating the same, as to insure an equal movement of the said wings in opening out. or spreading apart to permit the lamp to burn. The invention further consists in the construction of the pivoting-stem to which the wings just mentioned are attached, with their ends bent downward, and so combined with aspring and a spring-catch that not only may the wings of the extinguisher be properly held apart while the lamp is burning, but may also be brought together with very great quickness and facility to extinguish the same. i

To enable others to understand the nature and construction of my invention, I will proceed to describe it With reference to the drawings.

The perforated base of the lamp-burner is shown at A, the wick-tube thereof being marked a; The upper part of such burner is indicatedat B and may be hinged at one side, as shown in fig. 2, it being designed thatthe burner itself should be of any ordinary or su'itable construction, with the upper surface of the central por= tion I) of its base A around the wiek-tube a made nearly or quite flat, as shown more fully in fig. 3. Placed upon the top or upper surface of the central portion 6, and surrounding the wick-tube a, is a plate, a, which constitutes the base of the extinguishing device, and which is shown separately in fig. 4. This base-plate 'c is furnished at each end with two upright ears, 0, each of which is formed with a circular hole, as shown in the said figure, the said holes constitutingbearings for two horizontal stems or slender rods, d, which are attached longitudinally to the aforesaid base-plate a, one upon each side of the wick-tube. One end of each of these horizontal stems passes out through a notch, a'f, formed in the upper edge of the base A at one side thereof, and is bent downward, as represented more clearly ato Vin fig. 2, the said ends constituting arms, whereby the wings of the extingnisherare operated, as hereinafter set forth. Secured to the central part of the horizontal por tion of each stem (Z, at the side of the wick-tube, is a wing c, the lower portion of which may be made narrowy,

but the upper part a" of which is of a width somewhat greater than that of the-wick-tube, and is made of such form and projects inward in such manner that when the twowing's are brought toward each other the.

aforesaid upper portions thereof will cover and surround the top of the wicli -tube, as indicated in red outline in fig. 3, in order to extinguish the flame. Formed upon and projecting upward from one of thelateral edges of the base-plate e is a stud or stop, 2*, which is so situated as to prevent the adjacent ring frombeing moved beyond a certain distance from "the wiclctube, thepurpose of which will presently appear. I The two downwardly-projecting arms (F of thest ems (Z are connected by a bent spring, in such manner that thesaid spring tends to force the said arms apart, and consequently to bring the two wings e toward each other, with their upper portions 0" covering the top or upper end of the wick-tube a, as justhereinbefore explained. Firmly attached at one end to the extremity of one of the arms 11* is a spring-catch, g, in the upper side of the opposite end of which is a notch, which, when the extremities of the aforesaid arms d* are brought toward each other, catches upon the extremity of the other or remaining arm (1*, and thus holds the wings s with their upper portions 0 in the position shown in the drawings, to uncover the top of the wick-tube and permit the flame to burn. Inasmuch as the stud e limits the outward movement of the adjacent wing 11, it followsthat the said stud operates to support the arm (1* connected with the said wing against the strain exerted upon it by the opposite or other arm cl" when the wings are thus spread apart, so that by these means the bringing of the wings to an equal and uniform distance from the wick-tube when thus spread apart is insured.

When it is desired to extinguish the flame, the free or notched end of the spring-catch y is pressed downward, which, releasing the arms d", permits the springf to force apart the said arms, and bringing together the upper portions d of the wings e, ,which, closely covering the top of the wick-tube, as hereinbefore-explained, suddenly and effectually extinguish the flame. I

Inasmuch as the several parts of tlle extinguishing device, including the base-plate thereof, may be put together previous to attaching the extinguisher to the lamp, and as such attachment may be permanently made by simply soldering the base-plate to the upper surface of the central portion of the lower part of the burner, or by other suitable or equivalent means, it follows that the device may be much more cheaply made and applied to the burner than when made in the manner described in the -hereinbeforemientioned patent of Richardson and Ward.

What I claim as my invention, and desire to secure by Letters Patent, is

1 The arrangement of the wings a and stems d upon the base-plate a, constructed as described, to be placed over the wick-tube a and secured upon the central portion b of the base of the burner, substantially as and for the purpose herein set forth.

2. The stud or stop 0*, in combination with the wings arms 1F, and' spring f, substantially as andfor the purpose herein set forth.

3. The combination of the downwardly-eatending arms (1*, operating the wings a, with the springf, and

spring-catch g, substantially as and for the purpose specified,

LUCIUS M. SARGENT.

Witnesses:

S. 13. J. GODDARD, CALEB DANA.

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