US1428704A - Mixing machine - Google Patents

Description

G. H. PETRI. MIXING MACHINE. APPLICATION FILED ocr .12, 1920.

1,428,704. t nt d ept. 12, 1922.

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Patented Sept. 12, E922.

GUNTHER H. PETRI, OF BOSTON, MASSACHUSETTS.

MIXING MACHINE.

Application filed October 12, 1920. Serial No. 416,378.

To all whom it may concern:

' Be it known that I, GUNTHER H. PETRI, a citizen of the United States, residing atBoston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Mixing Machines, of which the-following is a specification.

My invention relates to improvements in mixing machines. More. especially it pertains to the supporting means for a receptacle such as a can in which the ingredients to be. mixed are placed. It is desirable to support the mixing can so that it may be swung out of its mixing position to a" position where it may be removed or replaced, orits contents handled. It is also desirable to be able to swing the can from the machine in more than one direction, so that the latter may be placed in the most advantageous position with particular regard to the space, light, driving means, etc; and without being obliged to consider the removal of the can in a specific direction from the machine. It hasalready been proposed to hang the can holder on a pivot in order that the can may be swun to one side or the other of the machine. uch a pivot is naturally placed on a projection from the middle of the machine. This has never been satisfactory however, for the proximity of the pedestal that supports the mixer driving machinery above limits the swing, unless the projection of the pivot be considerable; and if that be made considerable, in order to get the needed swing there has to be a great overhang of the driving machinery above. And such a design produces both increased stresses and decreased strength in the "projecting parts on account of the increase of leverage. But otherwise the limit of swing sometimes hampers ready access to the can, when swung from mixing position.

It is an object of my invention to provide a firm, compact construction, which is free from the above objections, and yet provides the advantages above indicated. This is accomplished by providing a plurality of supporting pivots for the can holder, which, in so far as they are close to the pedestal are outside of the medial vertical plane passing through the pedestal and overhead driving mechanism. Any one of. these may be used, thus making it possible to set the machine most conveniently as regards availablespace and adjacent objects, and insuring that however it is set the cancan be swung clear of the machine to a position where it may readily be removed. It is a further object of my invention to so construct the pivots that in addition to their functioning as an axis about which the holder is swung into unloading and loading positions they also serve to lock the holder and give it rigidity when in mixing position.

In the embodiment disclosed in the accompanying drawings, two pivots are shown at corners of the pedestal; and others might be provided elsewhere -without departing from the scope of my invention. It is intended that the patent shall cover by suitable expression in the appended claims whatever features of patentable novelty exist in the invention disclosed.

In the drawings: I

Figure 1 is a side elevation, partly in medial section, of a mixing machine showing a possible application of the invention.

Figure 2 is a plan diagram of certain details viewed as in section on line 39 of Figure 1; showing the can holder in mixing position in full line, and showing a portion of the can holder in varied swung positions in dotted lines;

Figure 3 is a fragmentary View of a coupling pin which may perform the'function of a pivot and also look the can holder while the machine is in mixing operation.

Referring to the drawings, 1 is the vertical standard or pedestal of the machine, the lower part of which is provided with a base 2, extending outward from the standard to form a support 9 for a can holder 3 provided with a plurality of bearing stems 40 which fit between cooperating or mating abutments 4 and 5 on vertical standard 1, the

said bearings and abutments being drilled vertically to permit a connecting or hinge pin 6, to be passed through them either to lock the can holder to the standard or to act as a pivot about which the holder may be swung away from the machine to a suitable unloading positions A downward projection 8 of the can holder 3 rests on the supsign is removably clamped on the end of a whip spindle 14 rotatably mounted in a whip driver 15, which is in the nature of p a crank, on the top end of which spindle is rigidly mounted a driving gear 19. An internal gear 20, integral with an outwardly projecting part 7 of the vertical standard 1, serves to give rotation to the gear 19 as the latter rolls within it in an orbit around a vertical shaft 16, which is the crank shaft of and rigidly secured to the whip driver 15, and rotatably mounted in bearings 17 and 18 of the projecting part 7. On shaft 16 is fixed a bevel gear 21 which meshes with a. bevel pinion 22 pinned to a variable speed shaft 23, mounted in bearings 25 and 26. Parallel with the variable speed shaft 23 is a constant speed shaft 24 journaled in bear ings 27 and 28, and having fixed thereon speed changing gears 29, 30, 31 and 32 of different sizes. These gears are in constant mesh with corresponding clutch gears 33, 34, 35 and 36 loosely mounted on the variable speed shaft 23.

Motive power may be applied to my improved mixing machine by any suitable means, such as the pulley 38, which is secured to an extension of shaft 24. Clutch mechanism of any suitable design, the details of which are not shown in the drawing may be operated to throw either one of two jaw clutches 41, which are splined to shaft 23, into driving connections with a clutch gear, thus driving shaft 23 at the desired speed, and, by means of the mechanism previously described, causing the heater to become active in the can 10. When the mixing operation has been completed, the outside power is shut off, or the clutches 41 placed in the position shown, and the beater disconnected from its spindle 14, and removed from the can. The latter may then be swung clear of the machine by simply removing one .of the connecting pins 6, and swinging the holder about the other pin 6 as an axis.

It is manifest that by using a plurality of pivots great rigidity of the can holder is secured, since the pivots may be disposed about the periphery of the holder, thereby supporting it so that each serves as a brace for the other and yet maybe the pivot on which the holder swings. By this positioning of the'pivots, the holder may be swung to either side of the pedestal with a full sweep away from the machine. The position which it can thus assume is more accmible than if but one pivot is provided for this same purpose, located next to the pedestal on the centre line of the machine.

I claim as my invention:

1. In. mechanism for holding material and operating thereon, a pedestal for the operating mechanism, combined with a receptacle holder having a plurality of pivots supported on the pedestal on different axes, and a receptacle supported by said holder adapted to hold the material on which said mechanism operates; each of said pivots being removable whereby the holder and receptacle may be swung about another of them.

2. In mechanism for holding material and operating thereon, a pedestal for the operating mechanism, combined with a receptacle holder having a plurality of pivotal supports located on different axes around the pedestal, and a receptacle mounted on said holder adapted to hold the material on which said mechanism operates; all of said supports being adapted to be engaged; and each being adapted to be removed thus permitting swinging about some other.

3. In mechanism for holding material and. operating thereon, a pedestal for the operating mechanism, combined with a lurality of pivots supported on the pedestal on different axes, and a receptacle adapted to be supported on either of said pivots and to hold the material on which said mechanism operates, in either of a plurality of positions while said mechanism is operating thereon; each said pivot being removable, whereby the receptacle is supported on another pivot while so cooperating with said mechanism in its said position.

4. A receptacle holder, adapted for use with a mixing machine or the like, comprising a plurality of pivoted supports located in various directions from the axis of operation of the mixing machinery, on either of which supports the holder may be swung; there being means to lock the holder thereon, in position under said axis.

5. The combination with a standard for a mixing machine having a mixing receptacle, of a holder for said receptacle comprising a plurality of pivotal connections between said standard and said holder; each of said connections being disconnectable to permit the holder to be swung about on another of said connections whereby the receptacle may be swung to different sides of the standard.

Signed at Boston, Massachusetts, this eleventh day of October, 1920.

GUNTHER H. PETRL

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