US2180622A

US2180622A - Air draft control appliance

Info

Publication number: US2180622A
Application number: US253299A
Authority: US
Inventors: Vincent Cuthbert
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-01-28
Filing date: 1939-01-28
Publication date: 1939-11-21
Anticipated expiration: 1956-11-21

Description

Nov. 2l, 1939. C. VINCENT AIR DRAFT` CONTROL APPLIANCE Filed Jan. 28, 1939 v BY jm ATTORNEY.

Patented Nov. 21., 1939 f UNITED STATES ATENT OFFICE 2,180,622l Am DRAFT eoN'rRon.APrLiLANoEl Cuthbert Vincent, Omaha, Nebr. Application January 2s, 1939, serial No. 253,299

1 claim. (or: 277-60) This invention relates to an air draft control videdfwith an'adjustably'mounted weight-mem'- appliance for preventing waste of fuel, and is ber.

specically designed for use in connection with Fig. 4 is a front view of the appliance, the wings oil burners generally used on furnaces, said oil being shown in closed position, and Fig. 5 is a 5 burners being of various kinds or types, but usrear View of the same. 5 ually being equipped with a motor-driven fan as Fig. 6 is a broken away side View in longitudia feature intended to assist combustion of the nal section showing a part of an oil burner with vaporized or atomized oil. the appliance mounted thereon.

Since chimneys vary in proportions and heights Referring 110W 60 the drawing fOr a more Dar-1 10 the degree of draft for furnaces, comparatively, ticular description, the invention is shown and 10 will not be uniform, and it often happens that described in connection with a part of the housan excess of chimney draft carries away unconing 'i of an oil burner provided with a fan 8 in sumed gases. suitable bearings for rotation for moving air in Also there is often a loss of fuel by action of thedirection indicated by the arrow shown in the fan in instances when the flow of oil to the Fig. 6 to a furnace (not shown). 15 burner is not uniform, or in instances when there Since the construction and Operation of Oil is a lack of uniformity in the quality of oil supburners used for heating buildings are Well known ply. Also there may be a loss of fuel when the it is not considered necessaryto show means for action of the motor-driven fan is not uniform rotating the fan, 0r i0 ShOw pipes fOr @Ondllcting as to speed. oil.

It has been observed that, according to the con- The invention consists, in part, of a cylindrical struction of oil burners now in general use, n0 hOuSing 0r SleeVe 9 having its free end formed attempt has been made to provide means which with a downward and inward inclination as indioperate automatically to prevent an excess movecated at l0.

ment of air through the oil burner and furnace Numerals i 2 indicate a pair of semicircular 25 when there is a change in speed, or when the Wings hingeably mounted at their rectilinear fan ceases rotation. One of the objects of the edges upon a pintle Il which is disposed parallel present invention is to provide an air draft apwith the inclined end I0 of the housing or sleeve pliance which will accomplish these purposes so 9, this inclination for the pintle Il operating as 3'0 that unconsumed gases will not be 10st. an aid for an automatic movement of the Wings 30 Another object of the invention is to provide i0 CIOSed DOSi'iOnan automatic appliance which normally will Numerals i3 indicate apertured ears, and by maintain the air intake port of the oil burner means of keeperS i4, the l10n-Sing or sleeve 9 is in closed condition at all times except when the Secured to the casing or housing 1 of the oil fan is in action, and which will automatically burner, the air intake for said member 9 being 35 open when the fan is in operation. in register with the air intake of the oil burner.

Other objects of the invention will appear in In operation, rotation of the fan will cause the a complete and clear description hereinafter set Wings t0 Swing inwardly G0 the DOSiiOn shown forth. in dotted lines in Fig. 2. In order that this in- The invention consists of the new and useful ward Swinging nlOVeInen will not Cause the wings construction, combination and arrangement of t0 be disposed relatively parallel, a spacing-block parts as described herein and claimed, and as ill5 (Fig 6) Carried by the i0!) 0f the Sleeve 9 is lustrated in the accompanying drawing, it being diSpOSed rearwardly 0f the pinile ll midway beunderstood that changes may be made in form, ilwen the wings.

size, proportions and minor details, said changes When the wings, by aCiOn 0f the fan, haveV 45 being Within the scope of the invention as mOVed inwardly i0 the DOSii1i0n ShOwn by Said claimed dotted lines in Fig. 2, it is obvious that this change In the drawing, in inclination may tend to prevent a reverse Fig. 1 is a View in side elevation, partly broken, Swinging mOVeIneni 0f the wings, by action of showing the air draft control appliance. gravity, t0 CIOSed pOSiiliOn when the fan ceases 50 Fig. 2 is a plan view of the appliance, the top its rotation, and therefore I have provided a pair portion of the sleeve or cylindrical housing being of weight-members I6 and have mounted them broken away to show the' location of a pair of on the inner sides of the wings as best shown in hingeably mounted wings. Fig. 5 of the drawing, and since these weights are Fig. 3 is a sectional View showing a wing prodisposed remote from the axis of movement of 55 sad wings, the latter will quickly respond to the action of gravity for movements to closed position.

Numerals I1 indicate a pair of stop-members which are carried by the sleeve or housing 9 and which are disposed outwardly of the wings to limit their outward swinging movements.

Since it is not a desirable feature, when the wings are in closed position, to completely prevent a draft of air through a furnace, the wings are of such proportions that passageways I8 (Figs. 4, 5) will permit a limited intake of air at all times.

It will be understood that the axis of movement for the swinging movements of the wings should be disposed in a vertical plane at a suitable inclination relative to a horizontal plane so that their swinging movements may be coincident and uniform.

In order that the wings may more readily move I to closed position by action of gravity, the weightmembers I6 may be adjusted horizontally, and

may be disposed nearer to the outer edges of the wings, horizontal slots I9 being formed in the Wings (Fig. 4), and by means of thumb-screws 2D the weight-members may be secured at selected distances from the axis of movement of said wings.

I claim as my invention:

The herein described means for air draft control comprising, in combination with a horizontal air draft pipe provided interiorly with an upwardly and outwardly inclined pintle, Ia 'pair of wings each provided with a horizontal slot and swingably mounted on the pintle, a pair of keepers each engaging in a slot of a wing and 'provided with a weight-member arranged to be secured to a wing at selected distances from said pintle to control the degree of swinging movement thereof for a control of air movements through said draft pipe.

CUTHBERT VINCENT.