US906036A - Mixing-machine. - Google Patents

Description

G. KUEBLEB..

` MIXING MACHINE. APPLICATION FILED SEPT-.177,190B.

Patented Dec. 8, '1908.

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G.- KUEBLEB..

MIXNG MACHINE.'

APPLIOATION FILED SHPT`17, 1908,.

Patented Dec.8,1908.

3 SHEETS-SHEET 3.

4IIIvrrsn STATES 'PATENT ortica.

GUsirAv KUEBLER, or SAGINAW, MIcnIeAN.

MIXING-MACHINE.

To all whom it may concern:

Be it known that I, GUs'rAv KUEBLER, a citizen of Germany, residing in Saginaw, in the county of Saginaw and State of Michigan, United States of America, have invented certain new and useful Improvements in Mixing-Machines, of which the following is a specification.

My invention relates particularly to machines for kneading and mixing dough and similar material, and particularly to that kind of machines of this class in which the material to bemixed orfkneaded is placed in a trough so mounted that it may be raised and lowered or tilted for the purpose of dumping the material after it has been worked by the machine.

The object of my invention is to provide novel means whereby the trough is raised and lowered by power controlled by a lever which is so connected with the driving mechanism that it may cause said mechanism to raise the trough at a relatively low speed and lower it at a higher speed, the mechanism being provided with devices whereby it is automatically stopped when the trough has been raised or lowered to the desired extent.

In the accompanying drawings, Figure l shows a s ide elevation of a mixing machine embodying my improvements. Fig. 2 shows a front elevation thereof. Fig. 3 is a detail view in side elevation with parts broken away of part of the driving mechanism. Fig. t is a detail view in section showing a spring catch for holding parts of the driving mechanism in an inoperative position. Fig. 5 shows more clearly the essential parts of the mechanism.

The trough A is of usual construction being provided with brackets a having bearings supported on the main driving shaft B carrying fast and loose pulleys C, C. Said driving shaft is supported in a suitable framezl) and it is geared as usual by the cogs E with the mixing or kneading devices.

The fast pulley C is provided on its inner side with an annular recess c concentric with its axis, and this recess has a concentric outer groove c and a concentric inner groove c2. A friction wheel F is arranged in the recess c and is adapted to engage in either of the grooves c, c2, being rigidly attached to a short shaft G mounted to revolve in a boss g formed on the lever H and also connected by an arm g with a sleeve g2 through which Specication of Letters Patent.

Application led September 17, 1908.

Patented Dec. 8, 1908.

Serial No. 453,433.

extends a shaft l that forms the pivot for the lever H and carries a pinion i gearing with a pinion z" on the shaft Gr. The pinion z' meshes with a spur wheel J on a shaft K extending transversely part way across the machine. At its inner end the shaft is supported by a bracket L on the main frame and it carries a beveled wheel L gearing with a similar wheel LZ fast with a screw shaft M with which coperates a nut N pivotally connected at n with arms N depending from the under side of the trough near its front end. The front end of the shaft M is supported by arms O which are in turn supported by the shaft K. The lever H is connected with the trough A by a slotted tively short slot p through which extends a pin p fixed to the lever H. At its opposite end the link is formed with a relatively long to the side of the trough.

Normally the rear end of the trough rests on an adjustable screw or stop Q and a pin R limits the outward movement of the nut N on the screw shaft.

lVhen the parts are in the position shown by full lines in Fig. l, and the shaft B is revolved in the direction of the arrow, the kneading and mixing mechanism is in operation and the raising and lowering mechanism is out of gear, z'. e., the friction wheel F, while being in the recess c, is not engaged in either of the grooves c or c2, the lever at this time being held by the spring catch S which engages a recess 's in the frame and holds the friction wheel F out of gear until the lever H is positively operated. If now it is desired to dump the trough, the lever H is raised or pushed rearwards. This will cause the friction wheel F to engage the inner groove c2 and as the pulley C constantly revolves, motion will be transmitted through the gearing, before described, lto the screw shaft M which will cause the trough to be raised to the position shown by dotted lines in Fig. 1, and its contents will be dumped. Vhen the lever H is moved upwardly or rearwardly in the manner before described, the pin p will pass to the rear end of the slot p. As the trough A rises, the pin p3 will first pass along the slot p2 without giving any material endwise movement to the link P, but the slot Is of such length that i ust before the trough has been raised to the limit of its upward movement, the pin p3 link P. At its front end the link has a rela- Y i slot p2 through which extends a pin p3 fixed Y will strike the rear end of the Wheel p2 and will cause the link P to move endwise, thus moving the lever H rearwards and disengaging the friction wheel F from the groove c2. The lever is then caught by the catch S and the friction wheel F is held in inoperative position. The lifting operation is thus automatically stopped. l

When it is desired to lower the trough after it has been dumped, the lever H .is pulled forwards or downwards. This causes the pin p to pass to the rear end of the slot p while the friction wheel F engages the groove c of the driving wheel or pulley. The screw shaft will then be turned in such direction as to lower the trough and, it will be observed that, the lowering operation is much faster than the raising operation. During this operation the pin p3 passes from the rear end of the slot p2 of the link P to tl e front end thereof and finally moves the link P rearwards and in an obvious manner causes the lever H to move rearwards and the wheel F to be disengaged from the groove c. In this way the lowering mechanism is automatically stopped, while the` driving shaft continues to rotate. It will thus be seen that the trough is raised and lowered by mechanism which is automatically stopped when the limit of the upward or downward movement has been reached,

that the trough moves more rapidly when descending than when ascending and that the gearing is such that should the mechann ism meet with any obstruction, it would not be liable to breakage on account of the fric- 1 tion gearing employed in the driving mechanism.

l claim as my invention 1. In a mixing machine, the combination of a pivotally mounted trough and mechanism for raising it at a relatively low speed and for lowering it at a greater speed.

2. In a mixing machine, the combination of a pivotally mounted trough, mechanism for raising it at a relatively slow speed and for lowering it at an increased speed, and means for automatically stopping the raising and lowering mechanism when the trough has reached the limit of its movement in either direction.

3. In a mixing machine, the combination of a pivotally mounted trough, a driving shaft, a driving pulley thereon having an annular recess concentric with the axis of the shaft and Yprovided with inner and outer concentric grooves, a screw shaft operatively connected with the trough to raise and lower it, a friction wheel adapted to engage with either of said grooves of the driving pulley, gearing connecting said friction wheel with the screw shaft, and a lever for moving said friction wheel into engagement with either of the grooves of the friction pulley.

4. In a mixing machine, the combination of a pivotally mounted trough, a screw shaft operatively connected therewith to raise and lower it as the screw shaft revolves, a friction pulley having an annular recess concentric with its axis which is provided with inner and Vouter grooves, a friction wheel adapted to engage either of said grooves, gearing connecting said friction wheel with the screw shaft, a lever connected with the friction wheel and a slotted link connecting the trough with the lever. l

In testimony whereof, I have hereunto subscribed my name.

GUSTAV KUEBLER. Titnesses Max W. OTTO, GUsTAv A. HnssLoEHL.

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