US450148A

US450148A - Rotary fan

Info

Publication number: US450148A
Authority: US
Publication date: 1891-04-14
Anticipated expiration: 1908-04-14

Description

(No Model.)

ROTARY FAN.

No. 450,148. Patented Apr. 14, 1891.

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ROTARY FAN SPECIFICATION forming part of Letters Patent No. 450,148, dated April 14, 1891.

Application filed May 10, 1890. Serial No. 351,273- (No model.)

To all whom, it may concern:

Be it known that I, RICHARD GODEFFROY, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, a citizen of the United States, have invented certain new and useful Improvements in Rotary Fans, of which the following is a specification.

This invention relates to certain improvements on the rotary fan for which Letters Patent No. 395,620 were granted to me on January 1, 1889, said improvements being designed with a view to simplify the construction, so that the same is better adapted to the purpose for which it is designed.

In the accompanying d rawin gs,Figure1 represents a side elevation of my improved rotary fan. Fig. 2 is a vertical central section of the fan-hub, tubular fan-shaft, interior guide-tube, and winding-rod drawn on a larger scale. Fig. 3 is aside elevation, partly in section, of the transmitting-train of gearwheels by which rotary motion is imparted to the fan-shaft, also drawn on alarger scale; and Fig. 4 is a plan of Fig. 3 with the top plate of the casing removed.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents a fan, the hub A of which is applied to a hollow shaft A that is provided at its upper end with a collar a, which rests on anti-friction rollers a, located in an annularly-grooved bearing a attached to the bottom of the easing B. The casing B incloses a train of gearwheels 0, by which motion is transmitted from a prime motor to the fan-shaft A The casing B is suspended bya top ring?) from a hook I), that is attached to one of the beams of the ceiling or to any other suitable support. In holes of the top plate of the casing B are guided three rods b the rounded-off heads of which are pressed against the ceiling by means of spiral springs that are interposed bet-ween the top plate and the heads, as shown in Fig. 1, so as to keep the entire fan mechanism in vertical position and prevent it from swinging while the fan is in motion. The train of gear-wheels O is driven by a weight E, which is suspended on wire or other cords e, that run over pulleys c, said cords being wound up on a drum E by turning a rod or spindle E, which passes down and through a fixed guide-tube A at the interior of the hollow fan-shaft A to the outside of the same. The upper end of the Windingrod E is provided with a boss 20. The lower end of the winding-rod E is provided with a handle h, by which the rod E is turned on its axis, the motion of the rod E being transmitted to the drum E by means of a pinion e at the upper end of the rod E and a cog-wheel a that is attached to the axle of the windingdrum E. The upper cylindrical part E of the winding-drum E incloses a pawl-andratchet mechanism (not shown in the drawings) which permits the turning of the drum E and the winding up of the suspension-cords. e on the same independently of the transmitting-train of gear-wheels C, but which imparts the movement of the drum to said train of gear-wheels when the driving-weight sinks, so as to turn the drum in a direction opposite to the direction of its motion when winding up the same. The lower end of the fan-shaft A is supported by a flanged circumferential collar cl'on a ring-bracket cl, attached to the lower end of the interior guide-tube A The friction between the fan-shaft A and collar cl is taken up by anti-friction rollers d which move in an annular top groove of the ringbracket (1, as shown in Fig. 2. The guidetube A passes upward into the casing B and is secured at its upper end to a fixed sleeve 0 which is attached by ribs (3*, having legs to the bottom plate of the casing B. The top and bottom plates of the casing B are provided With the required number of journal-bearings for the shafts of the different gearwheels of the train of gear-wheels O, by which rotary motion is imparted to the fan-shaft A The transmitting-train of gear-wheels is shown in Figs. 3 and 4, and consists of a gearwheel a at the upper end of the drum E, a pinion e meshing therewith, a gear-wheel e on the spindle of the pinion a a pinion e meshing with a gear-wheel c, a gear-wheel e on the spindle of the gear-wheele a pinion e", meshing with the gear-wheel a a gear-wheel e on the spindle of the pinion e", a pinion e meshing with the gear-wheel e a gear-wheel e on the spindle of the pinion e and meshing with a pinion 6 and a gear-wheel e at the lower end of the spindle of the pinion e which gear-wheel meshes with a pinion e at the upper end of the tubular fan-shaft A. The drum E and the gear-wheel e, the gear-wheel e connected with the pinion e, and the gearwheel 6 connected with the pinion e turn loosely on their respective spindles, while the gear-whee'lsc and 6 6, e 6 and e are fixed to their respective spindles. The pin-ion e is attached to the collar a at the upper end of the fan-shaft A In rooms with low ceilings, where the weight would not have sufficient fall to allow the fan to run any convenient length of time, the

Weight E and cords e, as well as the pulleys a, may be omitted, and in place of the same the drum E be operated by a spiral spring arranged at the interior of the same in the same manner as in the well-known springdriven clock-trains.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination of a casing, a motor therein, a winding-drum driven by said motor, a fixed sleeve within said casing, provided at its upper end with a bearing and at its lower end with legs attached to the bottom plate of said casing, an exterior bearing secured to said bottom plate opposite said fixed sleeve, a

tubular fan-shaft provided at its upper, end with a collar supported by said exterior hearing, a fan attached to said fan-shaft, a train of gearing between said drum and fan-shaft, a fixed guide-tube within said fan-shaft, extended upward beyond said shaft into said fixed sleeve and attached thereto, a windingrod extending through said fixed tube and through said fixed sleeve and provided at its upper end with a boss which engages the bearing of said fixed sleeve, gearing between the Winding-rod and drum, and a handle at the lower end of said winding-rod for actuating it, substantially as described.

2. The combination, with a fixed suspensionhook, of the snpportin g-casin g of a rotary fan, said casing having a suspension eye or ring and spring-actuated steadying-rods having enlarged heads or knobs, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

RICHARD GODEFFROY.

Witnesses:

JOHN M. NOBRE, HENRY TALTER TUCKER.