US1076168A - Attachment for extinguishing oil-stoves when overturned. - Google Patents

Description

K. L. STENDAHL. ATTACHMENT FOR BXTINGUISHING OIL STOVES WHEN OVBRTURNED.

APPLICATION FILED 001. 16, 1912.

WITNESSES:

Patented Oct. 21, 1913.

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UNITED STATES PATENT 'CFFICE.

KNUT L'UDWIG STENDAHL, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO JOHN A..

HURLEY, INCORPORATED, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF CONNECTICUT.

Specification of Letters Patent.

Patented oer. 21, leis.

Application filed October 16, 1912. Serial No. 726,184.

To all whom it may concern:

Be it known that I, KNUT LUDWIG SrnN- DAHL, a citizen of the United States, reslding at Bridgeport, county of Fairfield, State of Connecticut, have invented an Improve.

ment in Attachments for Extinguishing Oil- Stoves when Overturned, of which the following is a specification.

This invention relates to hydro-carbon stoves of the center draft type and has for its object to provide a simple, inexpensive and dependable attachment therefor that will instantly extinguish a lighted stove should it be overturned.

With this end in view I have devised the novel safety extinguishing device of which the following description in connection with the accompanying drawing is a specification, reference characters being used to indicate the several parts.

Figure 1 is a view partly in elevation and partly in section illustrating the use of my novel extinguisher in the font of an ordinary oil stove, the parts being in the normal or operative position, and Fig. 2 is an enlarged detail view partly in elevation and partly in section of the extinguishing device detached.

The invention consists in certain details of construction which will be hereinafter described and then specifically pointed out in the claims.

10 denotes a font, 11 the draft tube,'12 the wick tube, 13 the wick and 14 the air distributer.

l5 denotes an extinguisher having a downwardly extending flange 16 which is adapted in the extinguishing position to drop down over the end of the wick and the wick tube. The extinguisher is secured to the air distributer and serves additionally, in the raised position, as a flame spreader. The air distributer and the extinguisher are carried by a vertical rod 17 which extends into a ball chamber 22, perforated to permit free passage of air. Within this chamber is a ball 23 upon which the lower end of the rod rests in the normal position, as shown in Fig. 1. The bottom of the chamber is a concave plate 24 which is provided with perforations to permit free passage of air into the draft tube and with a central hole 25, large enough to be engaged by and to detain the ball without looking it.

The rod is provided with a shoulder 30 and a strengthening plate 31 is placed between the shoulder and the air distributer, the parts being secured in place bya ring nut or other hand piece 28. --The ball chamber is carried by a frame 32 lying within the draft tube. A wick stop 33 is secured to the upper end of the frame and the lower end of the frame is provided with a threaded rod 34 which extends through a cross piece 35 and is held in place by a ring nut or hand piece 36. The special purpose of this construction is to enable me to raise or lower the wick stop as may be required to produce the desired result by turning the nut.-

In order to insure the instant fall of the extinguisher and air distributor, should the stove be overturned, I preferably assist gravity by means of a spring 26 one end of which bears against a cross piece 37 in the frame and against a disk 38 or other proection on the rod, and which is shown as inclosed in a sleeve 39 to prevent the possibility of displacement.

The operation is a follows: The engagement of the ball with the central hole in the concave plate is sufiicient to retain the ball in place and hold the rod, air distrib uter and flame extinguisher raised under the ordinary conditions of use. Should the stove be overturned, however, the ball will be displaced leaving the rod unsupported and the spring will act to instantly draw the rod downward and with it the extinguisher, which covers the end of the wick and the flange of which extends down below the edge of the wick tube, thereby extinguishing the flame instantly and with practical certainty. When the stove is righted, the operator by means of hand piece 28 raises the rod, air distributor and extinguisher sufiiciently to permit the ball to roll to the center of the concave plate and seat itself in the hole and then lowers the rod into engagement with the ball.

Having thus described my invention I claim:

1. In an oil stove burner having a cylindrical draft tube, a frame adapted to lie within the draft tube, a closed chamber perforated on all sides and having a .concave bottom carried by the frame within the draft tube, a ball therein, an extinguisher tinguisher and a rod by which the extin-' guisher is carried and which normally rests upon the ball.

3. In an oil stove burner having a vertical cylindrical draft tube, a frame adapted to lie within the draft tube, a closed chain-1 ber perforated on all sides carried thereby within the draft tube and having a concave bottom, a ball resting thereon, an extinguisher, a rod by which the extinguisher is; earned and Wl11Cl1 normally rests upon the ball, and a spring acting to lower the ex{ tinguisher when the ball is displaced.

4. In an oil stove burner having a ver- 1 tical cylindrical draft tube, a frame adapted; to lie within the draft tube, an extinguisher,

a spring controlled rod within the draft tube by which the extinguisher is carried, a ball normally engaged by the rod to retain the extinguisher in the raised position, and a closed chamber perforated on all sides within the draft tube having a concave bottom with a central hole adapted to be engaged by the ball, substantially as described, for the purpose specified.

5. In an oil stove burner having a vertical cylindrical draft tube, a wick tube thereabout, an air distributor and extinguisher, a spring controlled rod within the draft tube by which the air distributor and extinguisher are carried, a ball which is engaged by the rod to normally retain the air distributor and extinguisher in raised position, a closed chamber perforated on all sides within the draft tube having a concave bottom with a hole adapted to be engaged by the ball and a frame within the draft tube by which the chamber is carried.

In testimony whereof I affix my signature in presence of two witnesses.

KNUT LUDWVIG STENDAHL.

Witnesses S. W. ATi-IERTON, E. M. GULVER.

Copies of this petentmay be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G.

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