US585608A - William wewers - Google Patents

Description

(No Model) W. WEWERS.

DRAFT DOOR ADJUSTER.

N0. 585,608- Patented June 29,1897,

UNITED STATES.

PATENT OFFICE.

I VILLIAM WVEYVERS, OF QUINCY, ILLINOIS, ASSIGNOR TO THE GEM CITY STOVE MANUFACTURING COMPANY, OF SAME PLACE.

DRAFT-DOOR ADJUSTER.

SPECIFICATION forming part of Letters Patent No. 585,608, dated June 29, 1897. Application filed November 3, 1896. Serial No. 610,968. (No model.)

To all whom it may concern.-

Be it known that I,WILLIAM WEWERS, a citizen of the United States, residing at Quincy, in the county of Adamsand State of Illinois, have invented new and useful Improvements in Draft-Door Adjusters, of which the following is a specification.

This invention relates to stoves, ranges, furnaces,and the like which are provided with hinged or pivoted draft-doors having means whereby they may be adjusted to regulate the draft.

The chief object of my invention is to provide a screw mounted on, moving with, and solely supported by the draft-door in such manner that the latter may be readily adj usted to regulate the draft and conveniently opened to its full extent without detaching or moving the screw from the door which carries it.

To accomplish this object, my invention consists, essentially, in the combination,with a door-frame having a lug or projection and an opening and closing draft-door, of a rotatable screw mounted in, moving with, and solely supported by the draft-door and constructed to engage the lug or projection, said screw having a part of its screw-thread or spiral flange mutilated or omitted to disengage the screw from the lug or projection when the mutilated or omitted part of the screw-thread or spiral flange opposes said lug or projection, as will be more fully hereinafter described in detail, reference being made to the accompanying drawings, in which- Figure 1 is a perspective view showing a portion of a heating-stove provided with my invention. Fig. 2 is a detail vertical sectional view taken centrally through the front part of the stove. Fig. 3 is a detail perspective view of the screw and the lug or projection with which the screw engages to adjust the draft-door; and Fig. 4:.is a similar view showing the position of the screw relatively to the lug or projection when the mutilated or omitted part of the screw-thread or spiral flange opposes or lies opposite the lug or projection, so that the draft-door can be opened to its full extent without detaching or removing the screw from the door which carries it.

In order to enable those skilled in the art to make and use my invention, I will now describe the same in detail, referring to the drawings, wherein The numeral 1 indicates the front portion or main door of a heating-stove of any known or desired construction, and 2 the hinged or pivoted draft-door, which is susceptible of swinging in the arc of a circle, so that it may be more or less opened to suit the conditions I required.

As before stated, the object of the present invention is to provide means foradjusting the draft-door and for enabling the latter to be conveniently opened to its full extent, and therefore I wish it clearly understood that my invention may be used in connection with a stove, range, furnace, or heater of any construction whatever, and that instead of the front part of the stove or heater being in a form of a main door, as shown in the drawings, it may be the front wall of the stove or heater, and the draft-door be mounted at any suitable part thereof.

For the purposes of this description the part into or upon which the draft-door 2 seats when closed may be termed a door-frame. This door-frame is constructed or provided at its upper side With a pendent lug or projection 3, preferably having an approximately rectilinear lower edge. The pivoted or hinged draft-door 2 is provided centrally between its ends with a cylindrical socket 4:, in which is journaled the cylindrical shank 5 of a screw 6, which commences in juxtaposition to the inner end of the cylindrical part 5 and terminates in a mutilated or omitted section 7 at the inner end of the body of the screw. The cylindrical body portion 5 of the screw is provided atit-s outer end portion with an annular or circular flange or rib 8, which seats into a correspondingly-shaped seat in the front surface of the draft-door. The flange or rib 8 is joined to a projecting handle or finger-piece 9 of such construction, form, or shape that it may be grasped for the purpose of axially rotating the screw in its cylindrical seat or socket in the door. The cylindrical portion of the screw m ay be retained in operative connection with the draft-door through the medium of any suitable devices, but as here shown this is accomplished by riveting or otherwise attaching a metallic disk, plate, or washer 10 to the door, so that the periphery of the disk, plate, or washer overlaps the annular or circular flange or rib 8. This construction of parts is advantageous in that it enables the screw as a whole to be economically and practicably applied to the door and held in proper position therein.

The screw-thread or spiral flange of the screw is designed to engage the edge of the lug or projection 3 in such manner that by rotating the screw in one or the other direction the draft-door will be swung 011 its hinges or pivots, and consequently can be nicely adjusted to increase or diminish the draft-opening and thereby regulate the draft. Inasmuch as it is desirable to frequently open the draft-door to its full extent, I mutilate or omit the inn er end portion of the screw-thread or spiral flange, as at 7, so that when this mutilated or omitted part opposes or lies opposite the lug or projection 3 the screw is disengaged or disconnected from the lug and the draft-door can be swung entirely open without detaching or removing the screw from the door, in which respect my invention is advantageous over prior constructions wherein a screw is rivet-ed to a stove-body and engages a recess in a damper and a screw engages a screw-threaded socket in the stove-body and has rotatable connection with the draft-door.

In the prior construction first mentioned the damper can only be adjusted a limited extent and the screw cannot be engaged with and disengaged from the body of the stove, while in the other prior construction referred to the screw is not solely supported by the draft-door and cannot be practicably disengaged from the stove body except by entirely unscrewing it therefrom, which is difficult to accomplish in that the draft door moves in the arc of a circle, while the screw moves back and forth in a right line.

In my improved construction the screw is mounted in and moves with the draft-door and is solely supported thereby, and by making the screw-thread or spiral flange of comparatively great pitch, substantially as shown in the drawings, the draft-door can be caused to move in the arc of a circle, and whenever desired the screw can be conveniently and quickly disengaged from the lug or projection for the purpose of opening the draftdoor to its full extent.

The width of the groove formed by the spiral flange of the screw is considerably greater than the thickness or width of the lug or projection 3 for the purpose of affording sufficient play between these parts so that the draft-door can be practically moved in the arc of a circle, while the screw remains substantially horizontal.

By myinvention I am able to secure a sub stantially air-tight closure of the door and an even distribution of air into and'under the fire, and I provide a draft-regulator which may be readily applied to any kind of stove or heating apparatus where the draft requires to be regulated. The draft-door may be applied to the main door, as in the drawings, or it can be used independently of the main door, as will be obvious without further explanation.

Having thus described my invention, I claim is- 1. The combination with a door-frame having a lug or projection, and an opening and closing draft-door, of arotatable screw mounted in, moving with and solely supported by the draft-door, and constructed to engage the lug or projection, said screw having a part of its screw-thread or spiral flange mutilated or omitted to render the screw susceptible of quick disengagement from the lug or projection when the mutilated or omitted part of the screw opposes said lug or projection, substantially as described.

2. The combination with a door-frame having a lug or projection, and an opening and closing draft-door havinga cylindrical socket, of a rotatable screw having a cylindrical portion journaled in said socket, a device for holding the screw in permanent operative connection with the door so that the screw moves with and is solely supported thereby, said screw having a part of its screw-thread or spiral flange mutilated or omitted to render the screw susceptible of quick disengagement from the lug or projection when the mutilated or omitted part of the screw opposes said lug or projection, substantially as described.

3. The combination with a door-frame having a lug or projection, and an opening and closing draft-door having a cylin drical socket, of a rotatable screw mounted in said cylindrical socket and having an annular or circular flange or rib and a handle or fingerpiece, and a plate or washer attached to the door and overlapping the annular or circular flange or rib to hold the screw in positive connection with the door, whereby the screw moves with and is solely supported by the door, said screw having a part of its screwthreaded or spiral flange mutilated or omitted to render the screw susceptible of quick disengagement from the lug or projection when the mutilated or omitted part of the screw opposes said lug or projection, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

what

WILLIAM WEWERS. WVitnesses:

Louis 0. ZANDER, WM. H. HEIDBREDER.

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