US399678A - Automatic grain-scale - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

J. LOCHER.

- AUTOMATIC GRAIN SCALES. No. 399,678. Patented Mar. 19, 1889.

INVENTOR (No Model.) 2 Sheets-Sheet 2.

J. LOOHER.

' AUTOMATIC GRAIN SCALES. No. 399,678. Patented Mar. 19, 1889.

UNITED STATES PATENT OFFICE.

JAMES LOOIIER, OF DEOATUB, ILLINOIS.

AUTOMATIC GRAIN-SCALE.

SPECIFICATION forming part of Letters Patent No. 399,678, dated March 19, 1889.

Application filed May 1, 1888- Serial No. 272,480. (No model.)

T0 (0 whom it may concern/.-

Be it known that I, JAMES LOOHER, a resident of the city of Decatur, county of Macon, and State of Illinois, have invented certain new and useful Improvements in Automatic Grain-Scales, of which the following is a specifieation.

My invention is adapted to be used in elevators, mills, or wherever it is desired to antomatically weigh a continuous flow of grain; and it consists in certain details of construction and combinations of parts, as hereinafter set forth and claimed.

In the drawings accompanying and forming a part of this specification, Figures 1, 2, and are end views of my device, and Fig. at is a perspective view of the weight for the scalebeam. Fig. 1 represents the device as it appears after a discharge has been effected and the parts returned to position. Fig. 2 shows how the flow of grain is limited just previous to a discharge, and Fig. 3 shows how a discharge is effected.

The chute Z) below hopper a forms permanent pivotal points of suspension for the bivalvular cut-off and flowregulator c c. Legs d (Z on the cut-off co-operate with roller e on arm f to regulate the flow of grain through the cut-off. The bivalvular weighing-receptacle i i is swung in the bifurcate end g of the scale-beam, and is connected with the cutoff by means of arms h h, which are slotted at h h to permit a limited degree of independent motion 011 pins u u. The weight comprises two circular disks separately secured on an axial rod, the disks being indicated by 7c and the rod by 7;. The disks are internally grooved or recessed to admit the projecting ends of the axle of sheave I, which runs on the curved extension g of the scale-beam and supports the weight.

g represents the termination of the scalebeam projected at approximate right angles to the generaldirection of the beam.

8 is an adjustable bolt in the projection g", and t are set-nuts for said bolt.

The device is supported by uprights o 0. One of a pair of pivot-supporting brackets is shown at 13. (See Fig. 2, where a support is broken away to expose the bracket.)

In Fig. 2 is also seen the preliminary pivot "r and the true pivot q of the scale-beam. Incline m tends to throw the weight 71 away from the fulcrum as the beam descends. Incline it provides a way down which the weight may roll until arrested by stop 72.

\Vith the device in the position shown in Fig. I the weighing-receptacle fills rapidly until the scale-beam swings on pivot r and permits the parts of the cutoff to swing one toward the other. \Vhcn the fulcrum of the beam is shifted to pivot q, the descent of the weighing-receptacle is checked, leaving the roller 6 between the legs of the cut-off, as shown in Fig. 2. The receptacle will now fill slowly until the scale-weight overbalanced, when the roller will pass from between the legs, the flow will be cut off, and the receptacle will descend and open,as shown in Fig. 5. The force exerted through arms 71 72 in opening the receptacle tends to check the downward motion thereof. To neutralize this tendency and insure an instantaneous discharge, the weight is constructed to roll toward the fulcrum at the instant the beam bears on the true pivot, and the beam is slightlyto accelerate the motion of the weight.

At the completion of a discharge of the weighing-receptacle the weight rests on incline m, and as the empty receptacle is overbalanced the incline starts the weight toward the end of the beam, with the result that all the parts are returned to the position shown in Fig. 1.

The arms 71- h are so constructed that the cut-off will close completely before the receptacle is opened, and remain closed while the receptacle is open. Provision is also made, as shown in Fig. 2, whereby the receptacle is balanced on the true pivot entirely unaffected by its connection with the cut-off.

The opening in the cut-oif just previous to a discharge of the receptacle should be small enough to slightly retard the smallest stream likely to pass through the device. This will insure a uniform flow from the cut-off to the receptacle at each bearing of the scale-beam, and so enable accurate account to be made of the falling grain.

Bolt .9, with its set-nuts 1, enables the weight to be adjusted on the beam, as will be readily understood.

simultaneous action of two parts moving in opposite directions it is evident that great celerity of motion is easily attained.

I claim as new and desire to secure by Let ters Patent- 1. In automatic grain-scales, in combination, a bivalvular cut olf on a permanent pivot, a bivalvular weighing-receptacle pivoted in a scale-beam below the cut-off, and arms connecting the receptacle with the cutoff, as and for the purpose set forth.

2. In automatic grain-scales, in combination, a bivalvular cut-off on a permanent pivot a scale-beam having two pivotal points, a bivalvular weighing-receptacle pivoted in the scale-beam, arms connecting the receptaole with the cutoif, and a stop partaking of the motion of the scale-beam and adapted to temporarily prevent complete closing of the cut-off, as and for the purpose set forth.

3. In automatic grain-scales, in combination, a bivalvular cut-off on a permanent pivot, a scale-beam having two pivotal points and a shifting Weight, a bivalvular weighingreeeptacle pivoted in the scale-beam, arms connecting the receptacle with the cut-ofi, and

a stop partaking of the motion of the scalebeam and adapted to temporarily prevent complete closing of the cut-off, as and for the purpose set forth.

4. In automatic grain-scales, in combination, cut-off c c, scale-beam g g, having pivots q and r, Weighing-receptacle it, pivoted in the scale-beam, arms h h, slotted at h h, Weight k 70 l on beam 9 g, legs (1 d on the cut-off, and roller 6 on arm f, as and for the purpose set forth.

5. In automatic grain-scales, in combination with a weighing receptacle, beam curved at g, and provided with upward proj ection g the Weight comprising the opposed disks internally recessed and the interposed sheave, and the adjusting devices 25, as and for the purpose set forth.

6. In automatic grain-scales, in combination with a weighing-receptacle, beam g g g", weight k In Z, and incline m, as and for the purpose set forth.

7. In automatic grain-scales, in combination with a weighing-receptacle, beam 9 g g, weight 75 is Z, inclines m and n, and stop it, as and for the purpose set forth.

In testimony whereof I sign my name in the presence of two subscribing witnesses.

JAMES LOCHER.

Attest:

I. D. WALKER, L. P. GRAHAM.

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