US1291988A - Oscillating support for fans and the like. - Google Patents

Description

E. MARELLI. OSCILLATING SUPPORT FOR FANS AND THE LIKE.

APPLICATION FILED MAR-10| 191?- Iatented Jau. 21, 1919.

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E. MARELLL DSCILLATING SUPPORT FOR FANS AND THE LIKE APPUCTION FILED MAR. \0\ 1917 1,291,988. Patented Jan. 21,1919.

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fron/e Marelli.

y WI. Johan/f orn ey.

' UNTTED sTA Tus PATENT OFFICE).

sRooLis MARELLI, oF- MILAN, ITALY..

Totali whom z't may concern.

Beit known thatI, AEnooLn .MARnLLn a subject of the King of Italy, resident of Milan, inthe Kingdom of Italy, No. -IO--Via Santa Radegonda, have inventedxnew and usefui Improvements in Oscillating Supports for Fans andthe like, :of which the following is a specification.

This invention relates to oscillating supports-for fans and the like, and it has for its object to provide improved means whereby an oscillating motion adjustable at will and byiniinitesimal 4degrees maybe imparted to various `apparatus and, in particular, electricalfans. 4

To the accomplishment of this object the invention consists in the novel parts, constructions, arrangements, combinations and improvements herein shown 'and described.

The accompanying drawings, referred to herein and constitutinga `part hereof, illustrate one embodiment of the invention, and

together with the description serve to illustrate the-principles thereof.

In the drawings:

Figure 1 is a view partlyin section, partly in elevation, of the box containing the gear for; driving the improved support;

Fig. 2 is 'a plan view of the gear comprising the driving pinion and the two rings cooperating therewith;

Figs. 3 and t-are a sectional elevation and a plan view, respectively, of the locking mechanism for the gear rings;

Fig. 5 is a sectional elevation of the rotary cover of the gear box;

- Fig. 6 is an underside View of the mechanism for varying the amplitude of the oscillating movements of the support;

Fig. 7 is a sectional elevation on an enlarged scale, of a hand controlled device which may be combined with the locking mechanism above referred to: and

Figs. 8 and 9 are side views of electrical fans mounted on a wall bracket and on an upright standard respectively, and provided v with an oscillating support according to my invention.

Referring more particularly to Figs. l, 8 and 9, my improved support comprises a box having a stationary base A which may be secured to a bracket X (Fig. 8,), a standard Y l jointed extension I V l `SpeciificatioziofLettersPatent;Y l Patented-Jan. 2 1, 1,919. i i Applicatio'nled March 10,1917.: Seria1No.154,000.

(Fig. 9) or any other suitable supporting means, and an oscillating cover B, which carries the fan the motor M of which is herev in shown to be mounted in a fork D rigidly connected with the cover B.

The cover B is rotatably mounted on a vertical shaft C secured to the stationary base A. To impart an oscillatory motion to the cover and the parts connected thereto I provide a continuously rotating shaft E, which is preferably drivenby the motor M of-thclfan. The shaft E has a universally which passes through a sleeve S in thecover B and carriesa pinion a `which extends between, and is in permanent engagement with, two concentric gear rings b and c, provided with external and internal teeth respectivel and rotatably mounted on the shaft C. In the embodiment shown herein the rings b and 0 are inserted between and guided by upstanding anges A and A2 on the base A.

It will be understood that if the rings b and c are free to rotate and the pinion a is continuously driven in the same direction, say in a clockwise direction as shown by the arrow in Fig. 2, the rings will be moved in `opposite directions while the shaft e and consequently also the cover B will remain stationary.

If one of the rings, for example, is locked against movement, the revolving pinion a will turn around the shaft C in a clockwise direction, the ring c being also carried in the same direction. If on the other hand the ring c is held stationary and b free tc rotate, the pinion a will turn around the shaft C in an anticlockwise direction. the 90 ring b being now carried in the same direction. In both cases the cover B will, of course. follow the movements of the pinion a, around the shaft C.

Assuming now that the rings b and c are alternately locked and set free the continuous rotation ofthe pinion a will be converted into an oscillating movement about the shaft C.

In Figs. 3 and 4 I have illustrated one 100 convenient means whereby the rings b and c may be alternately locked and set free, such means comprising a stationary plate d securedto thel vertical shaft C and provided bolt e is adapted to slide.

with a slot al in which a horizontal locking is provided on its lower and upper sides with projections f and g respectively, which are preferably diamond-shaped in cross-section. As shown in Fig. 3 the projection extends downwardly between the rings b and c and is adapted alternately to engage the spaces between the teeth on the respective rings as the bolt e is reciprocated by a mechanism hereinafter described.

Pivoted on the plate d are two levers 7L and la the adjacent ends of which are provided withV toothed sectors in engagement with one another (Fig. 4). The'opposite ends of these levers are yieldingly connected by a coil spring Z the extremities of which are attached to pins m and 'n on the levers h and 7 6 respectively. With this arrange ment it will be seen that the two levers form a toggle and that the spring Z will always tend to break such toggle on either side ofV theline joining the axes on which the levers '7L and c are pivoted. j VThelever la has a lat eral extension k provided with a slot or aperture z' through which extends the projection g formed on the upper side of the locking bolt e. Thus, when the lever 7c is swung in either direction, the spring Z, through the intermediary of the pin and slot connection g, z', will cause the stop f to 'be firmly pressed between theteeth of either of the ringsv 7o, c, thereby effectively locking such ring against rotation.

To control the swinging movements of the levers h and 72 1 provide on the lower side of the cover B two concentric rings p and Q (Figs. 5 and 6) provided with external and internal teeth respectively, and adapted to rotate in opposite directions on the hub V of the oscillating cover under the action of a pinion o which may be operated by hand by means of the turning knob t. The rings p and g are provided with abutments designated by r and s respectively, which are adapted to strike against the pin n when the cover B revolves about the shaft C. With this construction, if it be assumed that the projection f is in locking engagement with the gear ring Z), the driving pinion a and with it the cover B and its attached parts will be rotated in a clockwise direction until the abut-ment r will strike against the pin n, thereby making the toggle h, 7c, which, immediately thereafter, will be broken by the spring Z, the levers z, and 7c being swungfrom the position shown infull lines in Fig. 4f to that shown in dotted lines. The locking bolt e will be moved to the left and the proj ection f withdrawn from between the teeth of ring Z) and brought into engagement with the teeth of ring c. This will cause a reversal in the direction of the movement of pinion a and cover B around the shaft C, these parts being now rotated. in an anti-A This locking bolt l Y will.

clockwise direction until the projection s strikes against the pin n, when the toggle h, le will again be successively made and broken and the projection f engaged with i operated while the VsupportV is motion without interfering withits smooth operation.

support without stopping 1n Fig.Y 7 I have illusmeans whereby thelockreadily disconnected of the oscillating the drivingY motor. trated a convenient ing member c may be lt may be desirable to stopithe operation I fromboth gears Z) and c and the support Y arrested without interfering-with the operation of the fan. To this end I provide in a recess in the base Aa block u having a substantially conicalY cavity 'v` the openingfof which is considerably wider than thel conical,

end of the projection f. rthis block u 'is located underneath thebolt e and the aXisof the cavity fo is substantially 'equidistant from the gear rings b and c. rA handle HV v engaging in a helical groove jin the base A permits of raising and lowering the block at Then it is desired to move the locking member out of the path of the gear rings Z and o the block u is raised by means of the handle H. The conical surfaces on the projection f and cavity fu are thus caused to en gage one another, the projection f is moved away from whichever ring was engaged therebyuntil its aXis coincides with that of the cavity o, and it is held out of engagement with the gear rings until the handle H is operated to lower the block u and allow the locking member e, f to respond again to the action of the spring Z. When the projection f is engaged by the block 'LZ in the manner just described the two rings Z) and c are set in motion in opposite directions and lthe oscillation motion of the pinion a and cover B is brought to a stop as soon as the inertia of the oscillating parts is spent.

Means are also preferably provided for positively stopping the movement of the 'cover B when the block u is raised, such means comprising, in the embodiment illustrated in Fig. 7, a braking member a slidably mounted in a recess in the base A and adapted to press against the inner side of the cover B with its outer end y when its inner beveled end is engaged by a correspondingly beveled surface w on the member u.

It will be understood that in its broader aspects this invention provides a supporting revel ving member, such. 'a's'fthe' cover B',"\'vh'ich receives an oscillatory motion from a cn't-i-nuously pinion y,carried thereby, through thei'ntermedi'ar'j'f of a "pair of concentric gears controlled by an automatic 4locking device.

While the inventionhasbeendescribed with particularreference to certain details Of :('nst'rlcti'iI-i thesane is therefore not 'to be considered as limited thereto as many changes can be made and still fall within the scope of the following claims.

I claim ll. An oscillating' support comprising a stationary base, a supporting member rotatably mounted on said base, two concentric gear rings rotatably mounted on said base, a continuously revolving pinion carried by said supporting member, said pinion engaging both gear rings, and means for successively and alternately locking each ring.

*2. An oscillating support comprising a stationary base, a supporting member rotatably mounted on said base, two concentric gear rings rotatably mounted on said base, a continuously revolving pinion carried by said supporting member, said pinion being in permanent engagement with both gear rings, means for successively and alternately locking each ring, and means on said supporting' member for controlling the operation of said locking means.

3. An oscillating support comprising a stationary base, a supporting memberrotatably mounted on said base, two concentric gear rings rotatably mounted on said base, a continuously revolving pinion carried by said supporting member, said pinion engaging both gear rings, means for successively and alternately locking each ring, and ad-4 justable means for timing the operation ot said locking means.

4. An oscillating support comprising a stationary base, a supporting member rotatably mounted on said base, two concentric gear rings rotatably mounted on said base, a continuously revolving pinion carried by said supporting member, said pinion engaging both gear rings, means for successively and alternately locking each ring, and manually controlled means for rendering said locking means inoperative.

5. An oscillating support comprising a 'stationary base, a supporting member rotatably mounted on said base, two concentric gear rings rotatably mounted on said base, a continuously revolving pinion carried by said supporting member, said pinion engaging both gear rings, means for successively and alternately locking each ring, manually controlled means for rendering said locking means inoperative, and a brake for said supporting' member controlled by said manually operated means.

6. An oscillating support comprising a sta- 1 ,ses f3 tionary base, a supporting member rotatably mounted on said base, two concentric gear rings mounted on said base, said rings being provided with vexternal and internal teeth respectively, a continuously revolving pinion mounted on said supporting member, said pinion being in permanent engagement with both gear rings,a locking member slidably mounted in said base, a toggle operatively connected with said locking member, a spring tending to break said toggle on either side of its made position to force said locking member into engagement with either of said gear rings, and abutments on said supporting member adapted to alternately engage said toggle and-operate the same in opposite di rections.

7. An oscillating support comprising a stationary base, a supporting member rotatably mounted on said base, two concentric gear rings mounted on said base, said rings being provided with external and internal teeth respectively, a continuously revolving pinion mounted on said supporting member, said pinion being in permanent engagement with both gear rings, a locking member slidably mounted in said base, a toggle operatively connected with said locking member, a spring tending to break said toggle on either side of its made position to force said locking member into engagement with either of said gear rings, two concentric toothed rings rotatably mounted on said supporting member, an abutment on each of said toothed rings, said abutments being adapted to al- 'ternately engage said toggle and operate the same, and a manually controlled pinion engaging both toothed rings.

8. An oscillating support comprising a stationary base, a supporting member rotatably mounted on said base, two concentric gear rings mounted on said base, said rings being provided with external and internal teeth respectively, a continuously revolving pinion mounted on said supporting member, said pinion being in permanent engagement with both gear rings, a locking member slidably mounted in said base, a projection on said locking member adapted to engage said gear rings, said projection having a conical end, means controlled by said supporting member for causing said projection to engage alternately said gear rings, and manually operative means adapted to co-act with the conical end of said project-ion to move the same and hold it out of engagement with said gear rings.

9. An oscillating support comprising a box having a stationary base and a cover rotatably mounted on said base, two concentric gear rings rotatably mounted on said base, a continuously revolving pinion carried by said cover, said pinion engaging both gear rings, means for successively and alternately locking each ring, said gear rings, pinion means operable from the outside for render-- ing said locking `means inoperative, both said manually controlled means being adaptedto operate` without stopping the rotation of said pinion.

.In testimony. whereofl affix my signature. 10V

ERCOLE MARELLL 'Witnessesz n y Lo C. FUNK,

LUIS J. HERNANDEZ.

Copies of this patent may be obtained for uve cents each, by addxess'ing the Commissioner of Patents?, Washington, D. G. i i

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