US593777A

US593777A - Fumigator

Info

Publication number: US593777A
Authority: US
Publication date: 1897-11-16
Anticipated expiration: 1914-11-16

Description

(No Model.) v

T. H. MCDONALD. PUMIGATOR.

170,593,777. Patented Nov. 16, 1897.

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UNITED STATES PATENT EFic THOMAS HARVEY MCDONALD, OF POTOMAC, MONTANA.

F UMIGATOR.

SPECIFICATION forming part of Letters Patent No. 593,777, dated November 16, 1897.

Application filed (Tune 14,1897.

To all whom it may concern.-

Be it known that I, THoMAs HARVEY Mo- DONALD, a citizen of the United States, residing at Potomac, in the county of Missoula and State of Montana, have invented a new and useful Fumigator, of which the following is a specification.

This invention relates to improvements in fumigators.

The object of the present invention is to improve the construction of fumigators for smoking and suffocating squirrels, rabbits, gophers, and other burrowing animals, and to provide a simple, inexpensive, and efficient device capable of rapidly and thoroughly forcing smoke or fumes into the holes of such animals.

The invention consists in the, construction and novel combination and arrangement of parts, as hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure 1 is a perspective View of a fumigator constructed in accordance with this invention. Fig. 2 is a central vertical sectional view. Fig.3 is a horizontal sectional view.

Like numerals of reference designate corresponding parts in the several figures of the drawings.

1 designates a cylindrical casing composed of upper and lower'telescoping sections 2 and 3, the upper section being provided with a rigid bail or handle 4 and being adapted to be reciprocated vertically, whereby the device is adapted to act as a force-pun 1p. The bail or handle 4:, which issubstantially rectangular, extends over the top of the upper section, as clearly illustrated in Fig. 1' of the accompanying drawings, and is secured at the lower terminals of its sides to the upper section 2 at opposite sides thereof. The lower section 3 is provided at its lower end with a horizontal diaphragm or bottom 5, having an opening which is normally closed by a flap-valve 6, located on the lower face of the diaphragm over an opening 7. The valve is provided -with a substantially horizontally'disposed stem or lever, hinged between its ends to the lower face of the bottom or diaphragm 5 and provided with a weight for holding the valve normally closed. The top 9 of the upper sec- Serial n. 640,733. (No model.)

tion is provided with a opening 10 and has an inwardly-opening flap-valve 11, mounted on its inner face and constructed similar to the valve 6, being held normally closed by weight 12.

When the upper section 2 of the casing is raised, air enters through the valve opening 10 and on the downstroke the pressure of the air holds the upper valve firmly closed and opens the lower valve, so that any smoke within the device will be expelled through the opening of the bottom of the same.

The lower section of the casing is provided with a cylindrical hood or cap 13, adapted to fit over the hole, of a burrowing animal and consisting of a horizontal flange and a verticalflange or wall depending from the horizontal flange which forms the top of the hood or cap and which extends outward from the lower end of the tubular telescoping casing.

Within the lower section 3 of the telescoping casing is arranged an intermediate horizontal foraminous diaphragm 14, preferably constructed of sheet metal, and consisting of a circular plate provided at its-circumference with substantially radial cuts and having the out portions bent downward to form supporting-flanges 14 These supporting flanges preferably rest loosely upon the horizontal diaphragm or bottom 5 of the lower section and hold the foraminous diaphragm up from the valve, but the diaphragm 14 may be permanently secured in place, if desired. This diaphragm permits smoke to be expelled from the bottom of the casing, but prevents any of the fuel from passing out through the lower valve-opening. The lower section is provided at its upper edges with a packing of asbestosto provide substantially an air-tight joint, and the upper and lower valves are provided at their contact-faces with a coating of similar material.

The device is provided at one side with a handle 15, so that it may be readily carried, and the hood or cap 13 of the lower section,

besides being adapted for covering a hole, is

lower sections the upper section being .provided at its top with a valve, a horizontal diaphragm mounted on the lower section at the lower end thereof, and provided with a valve, and a foraminous diaphragm mounted within the lower section at a point above the said diaphragm and forming a fuel-support, said foraminous diaphragm preventing the fuel from coming in contact with the lower valve, substantially as and for the purpose described.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in 'the presence of two witnesses.

THOMAS HARVEY MCDONALD. Witnesses:

THOMAS E. EVANS,

W. M. WHITLEY.