Improvements in Powder Dusters for Distributing Insect Powder and the like.
Year: 1893

page_text: διαιτο UI
Dats of Application (in United Kingdom), 28th Nov., 1893
Complete Specification Left, 28th Nov., 1898-Accepted, 21st Mar,
1804
Complete Soecification Left, 28th Nov., 109
COMPLETE SPECIFICATION.
Improvements in Powder Dusters for Distributing Insect Powder
and the like.
1, DENNIS OLIVER TUTTLE, of North Haven, County of New Haven, State
of Connecticut, United States of America, Mechanician, do hereby declare the
nature of this invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement, reference
being made to the accompanying drawings, in which :-
Figure 1, represents a side elevation.
Figure 2, a longitudinal vertical section, and
Figure 3, a detail face view of the powder-receiver, illustrating the means for
controlling the feed-aperture.
This invention relates to improvements in insect-exterminators, and for its object
it has to provide improved means for feeding the insect-powder gradually and
controllably into the draft-current which spreads it, and to avoid the clogging of
the powder in or about the aperture through which it is fed.
To this end the invention consists in the novel construction, arrangement and
operation of parts hereinafter described and claimed.
In the drawing the reference letter A, designates the frame-work or casing of an
insect-exterminating device, the front end of which is shaped to form a tube, chute
or spout B. In the interior of the rear portion of the said casing is mounted a
rotable fan C, for creating a current or draft of air for the purpose of spreading
the insect powder as hereinafter referred to. A fan is preferably employed to
create the air-current, but obviously within the scope of this invention, other means
may be employed.
These parts are of usual construction, and will not therefore be further described.
Between the fan or equivalent device C, and the exit chute B, the frame A, is
preferably, though not essentially curved at its upper and lower portions, to form a
virtually cylindrical chamber D, transversely of which extends a shaft E, having
bearing in the sides of the frame or casing. Upon this shaft is rotably mounted a
hollow, cylindrical insect-powder receiver or receptacle, a, provided in one portion,
and preferably transversely of its peripheral face, with a feed-aperture b, over
which is fitted in guides or ways c, a plate d. This plate d is formed with an
elongated slot e through which passes a screw f, the point whereof engages the
periphery of the receiver. By loosening this screw f, the plate d may be adjusted
between the guides c, so as to control the size of the feed-aperture, as may be
found necessary or desirable, according to the character and quantity of insect-
powder to be delivered into the path of the current created by the fan C, or other
device to be spread.
A supply-opening 9, having a screw-threaded neck h covered by a removable
cap i, is provided in another portion of the peripheral face of the cylindrical
receiver a, through which, when the cap is removed, the insect-powder is introduced

page_text: into said receiver. This opening is, by preference, formed in the peripheral face
of the receiver in order that it may be brought into registration with a cap-covered
opening in the top of the frame A, whereby the powder may be introduced from
the outside, the invention is not, however, limited to the location of this supply-
opening, as it is apparent that it might be formed in the side of the receiver, a
corresponding opening leading thereto being, in such cases, formed in the side of
the frame or casing A.
The letter k indicates a plate or table suitably supported by the frame or
casing A, and extending from the fan-chamber opening forward to and under the
cylindrical receiver a, sufficient space being left between said receiver and the
plate or table, to form a passage-way for the draft or current created by the fan or
other device.
The rotation of the receiver, which, as shown in the drawing is in the direction of
the arrow (Fig. 2) constantly agitates the contained insect-powder, and when,
during the rotation of said cylinder, the feed-aperture is brought uppermost, the
powder falls away from said aperture, leaving it clear and unobstructed for the
discharge of the powder upon the plate k, whence it is carried, by the current or
draft created by the fan or other device, through the chute or spout B, and spread.
In the rotation of said receiver, the insect-powder is discharged through the
feed-aperture b, continuously, and gradually, during all that time when said feed-
aperture is presented toward the plate k, and the delivery is automatically cut off
when said aperture is brought above the axis of rotation of the cylinder.
By providing means for controlling the size of the feed-aperture, the quantity of
insect-powder discharged therefrom is regulated with facility, according to the
character of the powder and the circumstances of its use.
The cylindrical receiver, and the fan, as herein shown, are rotated through the
instrumentality of the driving mechanism hereinafter described.
Upon the shaft E, outside the frame or casing A, is secured a sprocket driving-
wheel F, which is operated in any desirable manner, as by a crank-handle, and upon
the fan-shaft is secured a sprocket-driven wheel G, of lesser diameter than the
driving-wheel. H represents a sprocket-chain trained over said wheels and
conveying motion from the driving-wheel to the driven-wheel. A take-up wheel I,
adjustably supported in a slotted bracket J, secured to the casing A, and at that
side of the driving-wheel opposite the driven-wheel, the office of which is to take
up the slack of the chain H. This invention is not, however, confined to the use
of the particular driving mechanism herein shown and described, inasmuch as
any other driving mechanism of approved construction might be used in its stead.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
1st. In an insect-exterminator, the combination with a casing forming a chute, of
a current-creating device located in the said casing at the rear end thereof, a
rotable powder receiver mounted in the casing in the path of the current created by
the said device and constructed with a small discharge-opening formed in its
periphery and adapted to receive a supply of insect powder, and means for rotating
the said powder-receiver, substantially as described.
2nd. In an insect-exterminator, the combination with a casing forming a chute,
a current creating device located in the said casing at the rear end thereof, a
rotable powder receiver mounted in the casing in the path of the current created
by the said device, and constructed with a small discharge-opening located in its
periphery, and adapted to have a supply of insect-powder introduced into it, and
means for rotating the said powder-receiver, substantially as set forth.
3rd. In an insect-exterminator, the combination with a casing forming a chute,
and constructed in its upper face with an opening closed by a cap or cover, a
current creating device located in the said casing at the rear end thereof, a rotable
powder-receiver mounted in the casing in the path of the current created by the

page_text: said device, and consisting of a hollow cylinder having a small discharge opening
formed in its periphery, and also having a supply-opening arranged to align with
the said opening formed in the casing, and means for operating the said current-
creating device and the powder-receiver substantially as described.
Dated this 17th day of November 1893.
DENNIS OLIVER TUTTLE.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.