US186292A - Improvement in fly-fans - Google Patents

Description

'UNTTEEV STATES PATENT OEETCE; l

HENRY B. BAKER, OF NELSONVILLE, OHIO.

IMPROVEMENT IN FLY-FANS.

Specification forming part of Letters Patent No. 186,292, dated January 16, 1877 application filed December 2, 1876.

To all whom it may concern:

`Be it known that I, HENRY B. BAKER, of

Nelsonville, in the county of Athens and State of Ohio, have invented a new and valuable Improvement in Fly-Fans; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the` same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a plan view of my improved fan; and Fig.

` 2-is a side view thereof, partly in section.

My invention relates to improvements in fly-raus which are operated by clockwork, and designed to drive dies "away from food, to prevent the approach of mosquitos to a sleeper, and for other analogous purposes.

l produced bythe fan may be increased, diminished, oraltogether discontinued without ar l resting the fan or impairing its eiiicacy as a fly-scarer, all as hereinafter shown and described.

In the annexed drawings, the letters a a designate two spaced (preferably circular) plates, connectedby pillars b, and affording bearings for the shafts of a suitable clock-work mechanism, which is actuated by a spring, and imparts rotation to a central shaft, B. This shaft extends up a certain distance through plate a, and the fan C will be applied thereon above the said plate. The fan is composed of a hub, b, radial armsc, and a number of blades, d, of` any sufficiently light and rigid material, as, for instance, wood veneer, tin, `or. pasteboard. The arms of the fan are of wire, and composed of two branches, c e', which diverge from the fan, andat their inner ends are a cer- `tain distance apart. r[he converging ends of these branches are pivoted to an angular metallic plate, f, between the armsig of which the blades are rigidly secured, and their diverging ends are inserted each in a perforation, i, formed in the periphery'of the hub. By this means the blades may be thrown out in line with the arms, raised up at right angles thereto, or arranged in any intermediate position. By seizing the outer end `of the arms and giving a turn, the blades may be placed at any angle to the plane of rotation, and the current of air directed upward or downward, as may be required.

The speed of rotation of the fan is regulated as follows: Shaft B is provided with a collar-disk, l,just below the upper plate a, upon which the free end of a brake-spring,j, will be caused to bear by setting up a thumbscrew, m. This thumb-screw will pass through the upper plate a, and its lower end will bear upon the said spring at a point between its free endl and the end se ured to the upper plate aforesaid. By setting up the spring hard, the fan will be arrestedv; but by a less marked application thereof the speed of rotation of the fan may be simply regulated.

The fan-blades may be of any shape, and ornamented or not, as I may elect.

To prevent the accumulation of dust in the operative mechanism of my improved ily-fan, I employ a hoop, E, of suiiicient depth to completely nclose the space between the upper surface of the upper plate a and the lower surg face of plate a'. This hoop may be of wood, metal, rubber, or any other suitable material, and may be ornamented upon its outer face. lt will also be removable, in order that the clock mechanism may be readily got at in the event of any derangement.

I am aware that is not new to employ a spring actuated by a thumbscrew` to bear directly againstthe main shaft of a iiyfan mech-l anism andI serve as a brake. Hence ll make no broad claim to such devices.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination'with the main shaft of a rotary fan and a collar-disk secured thereon, a friction-spring, and a set-screw for depresscollar-disk, substantially asl specified.

2. A iiy-fan consisting of a hub, b, having spaced perforations i, the double-branched arms c, and the blades d, pivoted to the end ofthe arms, and vibratingin their length edgewise, substantially as specified.

3. The combiuationywith the spaced plates a a and a clock mechanism of a ily-fan, of the removable hoop, substantially as specified.

ing the freeend of the said spring upon `the f4. :Thefan-blades d, havinga universal-joint connection-with the arms of the'hnb, substantially as specified.

VvIn testimony that I claim the above .I have hereunto subscribed my name in the presence .of two witnesses.

HENRY B. BAKER. Witnesses: v

FRANK' GooLEY, W. C. HIGKMAN.

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