US91297A - Improved automatic fan - Google Patents

Description

DAVID AARON, OF SAN FRANCISCO, CALIFORNIA.

Letters Patent No. 91,297, dated .Tune 15, 1869.

IMPROVED AUTOMATIC FAN.

The Schedule referred to in these Letters Patent and Ina-.king part of the Bamadrawings are su'flicient to enable any person skilled in the art or science to which it most nearly appel-rains,

to make and use my said invent-ion or improvements without further invention or experiment.

'My invention relates to an improved automatic or locomotive fan, in which a spring and clock-train are used for giving motion to the fan; and

It consists in placing a disk on the top of a spindle operated by an ordinary clock-train, having at any point near its periphery, a small projection. rlhe handle of the fan is provided with a slotted bar, in which the projection on the disk operates when the disk is in motion, converting the circular into a quick-return crank-motion, thus giving the fan the requisite to-andfro motion,

'lo more fully illustrate and describe my invention, reference is had to the accompanying drawings, forming a part of the specification, ot' which- Figure 1 is a side elevation.

Figure 2 is a plan.

A is a coiled spring, which operates the ciccio-train shown on the inside of the case B.

C is a spindle or shaft, which is operated upon by the train, and caused to turn.

Upon the top of this spindle is a disk, D, having near its periphery the crank-wrist (t.

The fan E is made of a suitable size to be operated by the train employed.

The fan is provided with a handle, F, through which a pivot, b, passes, and having at its end a slotted bar, G, in which the crank-wrist o' works, giving a quickreturn crank-motion, which operates the fan.

The train is enclosed iu a suitable case, E', with an opening, C, large enough to allow the handle of the fan to move back and forth when in motion.

By this means I have a locomotive, or automatic fan, which will require winding up every two or three hours, and need no further Iattention. It can be moved abopt, as desired, without danger of injury, and without trouble, and will be especially adapted for use in the sick-room, where it is necessary to create a. local draught of air.

The quick-return crank-motion above described, is not only the most simple and compact device that could well be employed, but it imitates very completely the rapid motion in one direction, and the compara.- tively slow motion in the opposite direction, commonly given to the hand-fan--a circumstance, that in the case of a nervous patient, may be of no small impoi-tance.

Havingr thus described my invention,

XVhat I claim, and desire to secure by Letters Patent, is

Giving the fan E, pivoted at l1, a quick return-motion by means of the slotted bar G, wrist-pin a, and disk D, driven by a spring and gears, or other movingpower, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal.

D. AARON. [L s.] Witnesses:

J. L. Boonn, W. J. MASON.

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