US354423A - Automatic grain-scale - Google Patents

Description

(No Model.)

1). E. KELLEY & H. D. PRATT.

AUTOMATIC GRAIN SCALE.

Patented Dec. 14, 1886.

No. 354,45. ,x. n h.

M I :y 0

WITNESSES I I K INVEWTOR J LdwM M fi I Attorney J.

N. PETERS. Pholc-Lilhogmpher. Wmhin lun. 1C.

U ITED STATES PATENT ;OFFICE@ DANIEL KELLEY AND HARVEY D. PRATT, OF GAYLORD, KANSAS.

AUTOMATlC GRAIN-SCALE.

EPEZCIE'IQATION forming part of Letters Patent No. 354,423, dated December 14, 1.886.

l wplicution filed April 6, 1886. Serial No. 197,989. (No model.)

To all whom it may concern.-

Be it known that we, DANIEL E. KELLEY and HARVEY D. PRATT, both residents of Gay lord, in the county of Smith and State of Kansas, have invented certain new and useful Improvements in Automatic Grain-Scales; and we do hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyi ng drawings, which form a part of this specification, and in which- Figure 1 is a front view of our improved grain-weighing machine. Fig. 2 is an end view. Fig. 3 is a vertical sectional view on line a: 31', Fig. 1; and Fig. 4 is a perspective detail view of the cut-off mechanism for the hop per.

Similar letters of reference indicate corresponding parts in all the figures.

Our invention has relation to that class of automatic grain-scales in which the grain is fed from a suitable hopper into a cylinder having radiating partitions, and having its shaft journaled in the downwardly-pending ends of links pivoted to forward ends of scale-beams, and provided with slot-stops registering with the compartments and engaging a spring-pawl when the cylinder is raised by the poises upon the scale-beams; and it consists in the improved construction and combination of parts of such a scale or weighing-machine, as hereinafter more fully described and claimed.

In the accompanying drawings, the letters A Aindicate the side pieces of the supporting-frame, and the outer sides of these side pieces are provided near their middles with bifurcated scale-bearings B B, in which the pivots O of the forwardly-projecting scalebeams D are pivoted, the said beams being connected at their rear ends by a cross-bar, E, and having sliding poises F upon their grad nated portions.

Links G G are pivoted to the forward ends of the scalebeams and depend from the same, and a shaft, H, is journaled in the lower ends of these links, and has a cylinder, I, jonrnaled upon it. This cylinder is formed by two circular heads, J J, to the inner sides of which the ends of partitions K are secured, the said partitions radiating from the sides or faces of beams overcome the weight of the cylinder and support it in its raised position.

The lower portion of the compartment-cylinder revolves in the upper portion of a spout,

N, into which the grain may be discharged from the cylinder, and a hopper, O, is secured between the upper ends of the frame-pieces, having its spout immediately above the com partment of the cylinder, which may be poi11ting upward.

Two L.-shaped levers, P P, are pivoted at their elbows to the ends of the hopper, and have outwardly-projecting arms provided with weights Q, and downwardly-projecting arms provided with a cuto f slide, It, secured to the lower ends of the said arms and sliding snugly under the end ofthe spout ofthe hopper. The upper ends of upwardlyprojecting rods S S are pivoted to the outwardly-projecting arms of the lovers near the pivotal points, and these rods slide in vertical ways upon the inner sides of the frame-pieces, and are connectedat their lower ends to the journal of the cylinder.

It will now be seen that when thegrain passes from the hopper into the compartment facing the spout of the hopper the weight of the grain in this compartment will at last overcome the weight of the poises, which have been adjusted upon the scale-beams so as to be tipped at acertain weight, and when the cylinder is depressed by the Weight of the grain in the compartment the notches upon the pe riphery of the heads which engage the spring pawls upon the frame will be disengaged, allowing the cylinder to rotate and to discharge the contents of the compartmentinto the spout.

As the compartments are formed upon the sides of the middle shaft, the center of gravity of each compartment will be at that side when it is full, and as soon as it is released from the engaging pawl it will rotate in that direction. As soon as it has rotated enough to permit any of the grain to escape, the weight of the poises will raise it against the pawls and cause them to engage with the next succeeding notch and prevent the cylinder from rotating too far.

hen the cylinder is depressed, the rods attached to the journal of the cylinder will be allowed to move downward and allow the outwardly-projecting ends of the levers to tilt the cut-off slide before the spout of the hopper, cutting off the flow of grain, and when the cylinder again is raised the rods will raise the weighted arms and the slide will be tilted away from the spout, allowing the grain to flow into the compartment. In this manner the machine may automatically weigh the grain flowing from the hopper and dump each quantity, and by connecting a registering device to the weighing device the number of compartments emptied may be registered.-

Having thus described our invention, we claim and desire to secure by Letters Patent of the United States- 2 In automatic grain-scales of the described general construction, the cut-off mechanism consisting of the elbow-levers P, connected by the cutoff plate R, and provided with the adjustable weights Q, in combination with the 0 connectingrods S and cylinder I, suspended 011 the seale-beams, as set forth.

In testimony that we claim the foregoing as our own we have hereunto affixed our signatn res in presence of two witnesses.

DANIEL E. KELLEY. HARVEY I). PRATT. Witnesses:

RosorUs HAG ADORN, GEO. R. PARKER.

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