US90009A - Improved automatic fan - Google Patents

Description

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IMPROVE!) AUTOMATIC FAN.

The Schedule referred to in these Letters Patent and making part of the same.

To all it-mary concern:

` Be it fknown thatl I, J cnn MAL'rnY, of Morrisania,

in the county of Westchester, State of New York, have invented a new and improved AutomaticFan; and I `dohereby declare .the ,following to be a full; clear, and' exact description thereof, which will enable those skilled in the art to make and use the same, reference being had Vto the accompanying drawing, forming part of this specicatiom'inwhich drawing- Figure 1 represents aside view of this invention. Figure 2 is`an end` view of the same. Similar| letters indicatev corresponding parts. This invention consists in the arrangement of a bal- I ance-weight on the end of the fan-stad, opposite the fan, in combination with the crank and connecting-rod, transmitting the motion of a clock-movement to the fan in such a manner, that by said balance-weight, the oscillations of the fan are equalized, and the crank is enabled to pass its dead centres without noise.

. `The invention consists, further, in the arrangement of a spring and notched disk, kin combination withthe oscillating fan, in such a manner, that bysaid spring and disk, the fau can be always stopped at either of the extremeI ends of its stroke,` andthat, when saidfan is used on a bedstead, the person occupying the bed can rise without danger of bringing his or her head'inV contact with the fan. r j

The letter A designates a clock-movement, which receives `itslnotion by means of a spring or weight, and which imparts motion to a shaft, a, to the end of which is secured a crank, b, carrying an eccentric wristpin, c, that connects, by a rod, d, with the fan B. This fanis attached to the bottom end of a stai, e, which f is suspended from a pivot, j, and the fan is balanced' by a. weight, C, securedto the upper end of the staff c, as shown in the drawing.

The rod dis provided with a slot, which straddles the wristepin c; and thepivot g, which forms the connectioubetween saidrod land the balance-weight G on the end of the fan-stan, is fitted into a slot in said balance-weight, so that the stroke of the fan can be adjusted to suit circumstances.

By theaction of the balance-weight O, the crankpin c is enabled to pass its dead-centres without any perceptible noise, and by these means my automatic fan is rendered fit to be used on a bedstead without disturbing the rest of the person occupying the bed; and, furthermore, the motion of the fan is materially facilitated, so that it can be driven with comparatively little power. y I

When my fan is used at the head of a bedstead, it is desirable that the same shall oscillate as close as practicable to the head of the person occupying the bed, so that the eiect of a fan driving away mosquitoes nies, 85o., and in producing Va perceptible draught o air, shall beobtained; but if the fansweeps close over the face occupying the bed, it is indispensable that the same can be arrested at either of the extreme 'ends of its stroke,so that said person can rise without danger of bringingfhis or her head in contact with the fan.

This purpose is eected by a stop-motiomconsisting of a disk,h, which is provided with two notches'it', to engage with a spring-stop, j, that can be drawn back by a cord, lt, extending down to the bed, so that it can be conveniently reached bythe person occupying said bed.

If this cord is released, the spring-stop drops into one of the notches of' the disk, and these notches are so situated that the fan is arrested at either of the ex vtreme ends of its stroke.

Having thus described mylinvention, What -I claim as new,'and desire to secure by Letters Patent, is

The combination and arrangement of fan B, bal-` ance-weight C, eccentric wrist-pin c, notched disk It,

and -spring-stop f, substantially as and for the purpose described.

Witnesses: JOHN MALTRY.

' W. HAUFF,

Ennnsr F. Knsrnnnunnn.

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