US151172A - Improvement in automatic fans - Google Patents

Description

G. H. TWHAOMPSUN. YAutomaticiifans.

Patented May I9, 1874;

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GEORGE H. THOMPSON, OF ATOHISON, KANSAS, ASSIGNOR TO JOHN PEN TON t CO., OF SAME PLACE.

IMPROVEMENT IN AUTMATIC FANS.

Specification forming part of ALetters Patent No. 151,1?, dated May 19, 1874; application filed January 31, 1874.

To all whom 'it'may concern:

Be it known that I, GEORGE H. TEoMPsoN, of Atchison, in the county of Atcliison and in the State of Kansas, have invented certain new and useful Improvements in Fans for Dining- Tables; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the, accompanying drawings making a part ot' this specification, in which- Figure l is a side elevation of my improved device. Fig. 2 is a like view of the mechanism employed for driving` the fans, and Fig. 3 is an enlarged perspective View of a section for 'use in increasing the length of the frame.

Letters of like name and kind refer to like parts in each of the iigures.

The object of my invention is to provide a simple, cheap, and efficient means for creating` a current of air over and arountl a table, bed, &c.; and it consists, principally, in the construction and combination of the operative parts of the apparatus, substantially as and for the purpose hereinafter specified. It consists, further, in the construction and combination of the mainframe and the extension section, substantially as and for the purpose hereinafter shown. y

In thel annexed drawings, A represents the base or frame of my apparatus, constructed, preferably, from a solid board, from the upper side of which, near its edge, extend upward, in parallel lines, two side pieces, B and B, that have substantially the form shown in Fig. l, and serve to sustain and inclose Vthe operative mechanism. J ournaled within and extending horizontally between the vertical pieces B and B are two shafts, Gand D, upon the iirst of which is secured a winding-barrel, E, that is provided upon one end with a ratchet-wheel, F, which latter is caused to engage with a pawl, G, that is pivoted upon a gear-wheel, H, that is in turn journaled upon said shaft. Upon the second shaft D is secured a pinion, I, that mesheswith and receives motionfrom the gear-wheel H and a l bevel-gear, K, that in turn meshes with and imparts motion to a bevel-pinion, L, which is attached to or upon the upper end of a shaft that is journaled in a vertical position within the base A. Immediately below the bevelpinion L is secured a double grooved pulley, M, around or within each groove m of which passes an endless belt, N, that from 'thence extends horizontally outward to and around a grooved pulley, O, which is secured upon the upper end of a vertical shaft, P, that is journaled within the base A. As thus arranged, it will be seen that if a cord and weight, or a coiled spring, be attached to the winding-barrel, and arranged to rotatel the shaft C, the shafts D and P,through the intervening mechanism, will be caused to revolve, so that it' suitable horizontal arms Q and dependent fans E are attached to the lower end of said shafts P the motion of said fans will create a current of air that will correspond in velocity to the speed with which said fans are moved.

It is intended that the apparatus shall be suspended from the ceiling of a room, over a table, bed, 85e., by means of a tube, S, through which, if a weight is employed, the operatingcord shall pass downward to the winding-barrel, y said cord being carried from the upper end ot' said tube, along said ceiling, to some convenient point, and said weight attached to its outer end. The exterior of the frame is to lie ornamented, and the fans made in open-work and ornamental, as shown. Y

For use over tables having more than ordiy nary length, it is desirable that the apparatus 'should be correspondingly extended, to effect which result the following-described means are employed.

A frame-section, Af, having a length somewhat greater than the diameter of one of the fan-wheels, and a width somewhat less than the width of the frame or base A, is constructed of bars, with one end open, as shown in Fig. 3. Within the end ofthe base A are provided slots a and a, that receive the ends ofthe section A, each of which latter is provided with two notches, a and a", that are arranged, re spectively, within its upper side near said end, and within its lower side at a greater distance outward from the same. rlwo pins, c" and df/y are placed within the base A, and, extending horizontally across each slot a, engage, re; spectively, with the notches a and a, and

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form bearings upon which said section rests, said outer pin afv sustaining the downward pressureof said section, while said pin am sustains the upward pressure of itsy inner end.

The appara-tus thus constructed furnishes a cheap, efoient, and durable means for creating` an artiioial current of air Within an apartment, and is capable ot' affording a material increase in comfort to the occupants thereof during,` hot weather.

Having thus fully set forth the nature and merits of my invention, what I claim as new,

l. The frame A, B, and. B, shafts C, D, P, and I), winding-barrel E, gear-wheels H and vK, pinions I and L, pulleys M, O, and O,belts I N and N, and fans Q and It, said parts being In testimony that I olaim the foregoing I- have hereunto set my hand this 17th day of November, 1873.

` G. H. THOMPSON.

Witnesses Guo. S. PRINDLE, JOHN R. YOUNG.

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