US1251876A - Fan. - Google Patents

Description

g A. .I. DUG ANr FAN. APPLICATION men FEB. 9. I916.

WITNESSES v ATTORNEY PATENT onnron.

ALBERT J. DUGAN, OF CROWLEY, LOUISIANA.

FAN.

Application filed February 9, 1916.

To all whom it may concern:

Be it known that I, ALBERT J. DUGAN, a citizen of the United States, residing at Crowley, in the-parish of Acadia and State vof Loulslana, have lnvented certain new and useful'Improvements in Fans, of which the followingis a specification.

This invention relates to fans, and has particularreference to that class of fans which have power operating means connected therewith. I

Theprinc'ipal object of the invention is to provide a suitable mechanism operated by a spring motor for rotating a fan, and to so arrange the parts of the mechanism as to obtain high speed and power of the fan with the least force from the motor.

Another object of the invention is to pro-. vide means to govern and prevent fluctuations in thespeed of the fan, and to provide means whereby thespeed of the fan 'may beregulated.

Another ob ect of the invention is to provide a deviceof this character which is simple in construction, cheap and easy to manufacture and which is thoroughly reliable and efiicient in operation.

With the above and: other objects in view the invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter more fullydescribed, illustrated in the accompanying drawings and claimed.

In the drawings Figure 1 is a vertical longitudinal section of a fan operating mechanism constructed in accordance with theinvention;

Fig. 2 1s a vertical transverse sectlon therethrough;

Fig. 3 is a face view of the drum;

Fig. lis a fragmentary section through the drum.

Referring to the drawings by numerals wherein is illustrated the preferred embodiment of my invention 1 designates a casing which, as shown, is of substantially rectangular shape and. is preferably formed from sheet metal. This casing forms a housing for the operating mechanism'for the fan.

Near the lower wall of the casingiand adjacent one end thereof is arranged a trans versely extending. arbor 2. "This arbor is Specification of Letters Patent.

Patented. Jan..1,;1918.

SerialNo. 77,289.

journaled in the side walls of the casingfor free rotation, and has fixedly secured-thereon a drum 3. This drum is circular in shape and is hollow to receive a fiatspring 4 which is woundabout a'tubular projection 5 on the drum and to which its-inner end is adapted to be-secured. This spring is of any desired length and has its outer end'secured to a pin 6 carried by a plate 7 which is loosely mounted uponthe arbor2 and serves to inclose thespring withinthe drum. The drum is provided with a flange 7 which has a pluralityof tongues 8 out-struck therefrom, anyone of which'is adapted for engagement-with a sp'ringtarm 9 carried by one side wall of theicasing, whereby the drum is prevented from rotating in one direction.

The plate 7 carriesa gear wheel 10 which 7 1S relatively largeand projects through openlngs in one end and thQlDWGIVWEIllIOf the casing. This gear wheel 10 meshes with a similar gear 11 on a shaft 12;extending transversely. of the casing, the gear 11 1 be- 1 5 is preferably fixed to the shaft 16, and

this shaft is rotatable in suitable bearings in the side walls of the casing, while the gears 11 and 14 may be loosely mounted upon the shafts 12 and 13 or may be fixedly secured to the shafts and the shaftszjournaled for free rotation in the-side .walls of the casing as desired.

A fourth tra-nsversely extending sh aft' 17 is provided which extends exteriorly to one side of'the casing and has a fan' 18 mounted thereon. This shaft is freely rotatable in suitable hearings in the side walls* of the casing and has fixedly secured thereto :a

pinion 19 which meshes with the gear or pinion 15, the gear 19 being relatively smaller than the gear 15 as is shown.

A pulley 20 is secured to the shaft161and this pulley has trai ne'drthereover a belt-'21 which is. also trained. over: a second pulley 22 I fixed to a transversely :exten'ding .shaft 23. By this arrangement it will be noted that rotary motion imparted to the gear 11 by the gear 10 will impart a rotary motion through the gears 1a, 15 and 19 to the fan 18 and also to the pulley 22 through the medium of the belt 21.

The spring a constitutes a source of power for operating the gears mentioned and a plate 7 is adapted to transmit motion to the gear 10. A crank handle 24 is secured .to the arbor 2 so that the spring may be wound. By rotating this handle the arbor will be turned which will carry the drum 3 therewith. The inner end of the spring being secured to the drum will serve to put the spring under tension when the drum is ro- 'tated should'the outer end thereof be held against movement. Since the gear 10 is carried by the plate 7 and the outer end of the spring is secured to the plate it will be obvious that any desired means may be provided for holding the gear 10 against rotation whenit is desired to wind and tension the spring, the spring arm 9 cooperating with the out-struck tongues 8 to permit of free turning of the drum in direction to wind the spring but serving to prevent rotation of the drum in a reverse direction. It will thus be seen that after the spring has been wound and the means holding the gear 10 against rotation has been released the said gear will be rotated by reason of the outer end of the spring being connected with the plate 7 which carries the gear 10 the train of gears leading to the fan thus being set in motion.

For the purpose of regulating the speed of the fan when in use means have been provided driven by the belt 21 for governing such movement and to insure proper rotation of this governing device a tightener for'the belt 21 has been provided which consists of a roller 25 journaled upon a pintle 26 which is in turn supported by a bracket 27 carried by the casing. This roller 25 is arranged for engagement with the belt 21 upon which it is adapted to bear. A rod 28 is threaded into one wall of the casing, whereby the same is permitted of longitudinal adjustment. The inner end of this rod engages the pintle 26, whereby a tension may be placed upon the same to force the roller into tight engagement with the belt, the said threaded rod serving as a means whereby the pressure of the roller on the belt may be varied as will be understood.

A novel formof stop means for the fan has been provided which consists of a disk 29 mounted upon the shaft 16 near one end thereof. This disk is adapted to be engaged by a pad upon a right-angularly extending portion of a rotatable rod 30. The rod 30 projects exteriorly of the casing and'is provided with a suitable finger grip, wherebythe same may be rotated. By rotating this rod in one direction the pad may be brought into engagement with the disk so that its frictional engagement therewith will overcome the power exerted by the spring motor. It will thus be seen that ro- 7? tation of this rod 30 will swing the pad from engagement with the disk and permit of operation of the mechanism while rotation in an opposite direction will engage the pad with the disk and stop the mechanism. 7 The means provided to govern and prevent fluctuations in the speed of the fan comprises a disk 31 which is mounted for free sliding movement longitudinally upon the shaft 23, and a collar 32 which is connected with the disk by means of arms 33 which are pivotally connected to the collar and disk and have interposed therein and to which their outer ends are pivotally secured balls 34. A set-screw 35 isprovided in the collar 32 whereby the same may be locked in any longitudinal position upon the shaft. An arm 36 is carried by the casing and has an extension thereon carrying a pad which is arranged in the path of movement of the disk upon the shaft, the said pad being adapted for abutting relation with the inner face of the disk as is illustrated to advantage in Fig. 2 of the drawings.

Upon rotation of the shaft 23 through the medium of 'the belt 21 the balls 34E will be caused to swing outwardly relatively to the shaft as will be understood. This outward swinging of the balls will draw thedisk 31 into engagement with the pad upon the arm 36, as will be obvious. The frictional engagement between the disk and pad will serve to reduce the speed of the operating mechanism and thus cause the same to rotate evenly and smoothly.

From the foregoing description taken in connection with the accompanying drawings it is thought that the construction and operation of the improved operating mechanism 10 will be clearly understood, and while I have herein shown and described one specific embodiment of my invention, I do not wish to be limited thereto except for such limitation as the claims may import.

I claim: r

1. In a device of the character described an arbor, a drum fixedly'mounted on said arbor, a plate rotatably mounted on said arbor, a spring having one end connected to the drum and its other end connected to the plate, tongues formed on said drum, an arm for engagement with said tongues, and a rotatable element operable by the plate.

2. In a device of the character described an arbor and manual means for rotating the same, a drum fixed on said arbor to rotate therewith, an outwardly projecting flange on the peripheral surface of said drum, a circular series of equally spaced teeth on 139 said flange, said teeth being formed by press engageable at its other-end With said teeth 1 ing outwardly from said flange tongues to prevent backward rotation of the drum. 10

punched from the material forming the In testimony whereof I afliX my signature same, a head for said drum rotatably mountin presence of two Witnesses.

ed on said arbor and carrying driving LBERT J. DUGAN.

means, a coiled spring connected at one end Witnesses: to the drum and at the other end to said A. C. LOMRAND plate, and a spring arm fixed at one end and FRANK A HILL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. C.

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