US72615A - Improvement in weighing-scales - Google Patents

Description

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Letters Patent No. 72,615, dated December 24, 1867; antedateol .December 20, 1867.

IMPROVEMENT 1N WEIGHING-SGALS.

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l TO ALL PERSONS TO WHOM THESE PRESENTS SHALL COME:

Be it known that I, LABEN EDDY, of Taunton, in the county of Bristol, and State of Massachusetts, have invented a new and useful Improvement in Scales for weighing articles of various kinds; and I do hereby declare the same to be fully described in thc following specification, and represented'inthe accompanying drawings, of which I Figure 1 is a top view,

Figure 2 a side elevation,

Figure 3 a horizontal section, and

Figures 4 and 5 transverse and vertical sections of alscale made in accordance with my invention.

In such drawings, denotes the frame or stand, for supportingr the main operative parts of the scale. B is a circular curved arch or limb attached to a curved diamctric bar or lever, C, whose two extremities are supported by knife-edges, o: a, resting in sockets or bearings, b Z1, of the standard. The diametric bar, curved as shown in gs. 3 and 4, supports, by means of knife-edges c c, a vertical standard, D, which projects both above and.

below the Asaid bar C, and at its foot is jointed to one end of a horizontal bar, D, whose opposite endis hinged to the stand A. A scale-pam'E, is placed on the top of the standard D. `Furthermore, at the centre of the bar C there is a pin, d, which extends upward from the bar. Upon the said pin two arms, F G, provided with weights, I K, turn horizontally. Each of such arms has an index-pointer, e or f, which is arranged so as to project directly over the curved limb b, in manner as represented. One of the weights, and its arm, are intended to indicate pounds, and the other, ounces, or fractions thereof. The knife-edge supports of thc standard D are not in the same straight line with those of the diametric bar, but are placed a short distance therefrom, in manner as represented in the drawings. The diamctrie bar and the circular curved limb become a lever, having the scale-pan supported by one of its legs, and the weighted arms applied to theother, with lthe p'cculiarity that each ofthe weighted arms moves in or about a quadrant or arc of a circle, either toward or away from the fulcrum of the lever. The curved limb is to have a series of divisions ou its upper surface, to indicate the weight of articles when placed in the scale-pan, the fractional parts of each pound denoted bythe heavier arm being represented by the other arm on the divisions of its part of the arc or limb.

The above arrangement of levers and weights to operate a scale-pan is a very convenient one for many purposes, as it affords a long sweep or range of divisions to indicate the weights in the scale.

Within the case or fram'e A there may he a chamber or box, L, for holding a ball of twine, there being a hole, L, made through the cover or cap of the frame. Through this hole the twine from the ball may be led. This will be a convenience for grocers or others, who may have necdof twine to tie up bundles of articles weighed by the apparatus. i

I would remark that the divided limb, instead of being attached directly to the diametric lever, may be disconnected therefrom, and 'oe aixed to the standard, so as to be stationary relatively thereto, but, in this latter case, as the weight-ed arm or arms would move more or less away from the limb, during the process of weighing an article, this arrangement or separation of the limb and the diametric lever would not be so convenient and useful as that arrangement or application of the two in which they are united, as hereinbefore specified. I mention such a construction of the weighing-apparatus, however, to show another mode in which I have contemplatcd the application of my invention, by which it may be distinguished from others of like character.

I claim as my invention- The combination as well as the arrangement of one or two weighted arms, F G, anda curved arch or limb, B, with the diametric lever C, and the scale-pan E, or its equivalent, supported thereon, substantially as set forth, and this, whether the limb be aiixed to the diametric lever, or to the stand thereof, as explained.

I also claim the combination and arrangement of the twine-holder L with the stand or case A, and the weighing-mechanism thereof, as specified.

LAisEN EDDY.

Witnesses:

R. H. EDDY, F. P. HALE, Jr.

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