US99148A - Improvement in weighing-scales - Google Patents

Description

D. BUOY.

Weighing Scales.

No. 99,148. Patented Jan'y v25, 1870.

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Letters ;Patent No. 99,148, dated January 25, 1870.

IMPROVEMENT IN WEIGHING-SCALES.

The Schedule referred in these Letters Patent and making part of the same.

To all whom it may concern: I

Be it known that I, DENNIS BUOY, of Danville, in the county of Montour, and State of Pennsylvania, have invented certain new and useful Improvements in Scalesor Balances; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompauying drawing, which is. made a part of this specification.`

My invention relates, primarily, to counter-scales of that class which operate on the principle of the steelyard or Roman balance; and i It consists- First, in construeting the beam or lever with one or more graduated series of holes or cups for the reception of the weight or weights; and

Second, in attaching the dish to the beam or' lever through the medium of a supplementary' lever of the vthird order, for the purpose of removing the series of weight-holes of the beam to the desireddistance froml the dish, to afford convenient access to them.

ln the drawing- Figure 1 is a plan view o f a counter-scale, embodying my improvements, the dish being removed.

` Figure is a side elevation thereof, partly in vertical section.

A hollow b'asc, A, of suitable'mateial and form, is employed, provided with two o more vertically-projectin g arms or standards a a', to support the beam, Sto., and with a number of holes, a", and a cup, a'", or a corresponding series of holes or cups for the reception of the weights when notin use,a lateral extension being provided 'for the reception of said holes, &c., as represented in fig. 1. i

A frame, B, arranged over the head of the base A, supports the dish O, and is Aheld in its vertical position by means of the customary guide-rode b b', arranged within the base, as represented in fig` `2.

' A bar or lever,D, fuicrumed at d iu the standard af, at the rear end of the base, engages with the ame B by means of the customnry pivots d', having their knife-edge upward, and resting in suitable sockets in the legs of said frame, and is connected at an intermediate point central between said pivots d' and the pirot-s e of the beam E, to the front end of said beam, by means of a pair of links, F, engaging with pivots d" and e' on said lever and beam respectively.

The beam E is fulcrumed in the upper' end of the standard a, which is bifurcated and provided with suitable sockets for the reception of its pivots. In form it may be substantially as represented, and may be of steel, brass, or other suitable metal, or of two or more of such metals combined, as represented.

It is provided, in fr'ont of its fulcrum, with, preferably, two longitudiual series of holes, d' e'", or cups, for the reception of the weights, the holes in the series being of suitable capacity to accommodate the different' sizes of weights employed, of any desired number, preferably eight andy sixteen respectively, and each series, if preferred, connected by a groove, to facilitate adjusting the weights therein.v

The graduation is made relatively to the distance between the pivots of the two levers, and by properly amin ging the pivots d of the lever D, may be made relatively to the distance between the points e and e',

in approximately the same manner as were the dish supported directly at c'; v

,The above-described arrangement of the levers D i and E presents the advantage of allowing the ,dish to -be placed at a greater distance from the fulcrumof the scale-beam without sensibly affecting its leverage, and thus aflbrds more convenient aocessto the weight-holes. The motion of the beam E, and consequently of the otherparts connected ther'eto, is limited by means of .a downwardly-projecting-link, e4, embracing a pin, ai, projecting rearwardly from theupper cnd of the standard a', and a projection,"ai, on top of said standard.

The balancing of the several parts is secured in the usual manner,,any little inaccuracyin either directionv being' compensated for by means of an ajustable ball or weight,,G, on the lever D, anda boxgor receptacle,

H, for the reception of shot, 8.70., at the extreinity of the beam E, -or equivalent means.

The holes a e" e' in the base A and beam E, when such are' used, flare inwardly or downwardly, as 'represented at a, in fig. 2, and thus prevent any accumulation of dirt, Sto., within them, and the small amount of -bearing-surface for the weights, thus formed, prevents the transfer, in any appreciable quantity, of any which might be on their surface to the weights, by

resting in them. This is especially desirable for the holes a'f in grocers7 scales, which are constantly receiving small portions of the sugar, 860., which isfbeing weighed. f

The weights i, i' i i'" are invthe form of balls or spheres, preferably of iron or other suitable metal, polished to adapt them to readily accommodate themselves to a seat. Their size is so regulated asto represent the different denominations which it is desired to use. Those represented are intended to illustrate respectively one and one-half pound, fi; one pound, fi';

two ounces, and one onnce, i'f'; of which, with the style of scale represented, I use one one anda half pound, two one-pound, and one Aeach of two and one onnce, as represented.

The series of holes e and c'" in the beam E are for the reception of the weights i i' and i, respectively. A pound weight, i', placed in the first hole in the series c", will balance one pound vin the dish; in the second, two; and so on in arithmetical progression.

A two-onnce, weight, 12'?, in the first hole in the scn'es d", (which is only one-half the distance from the fulcrum e that the first of the series e is,-) will balance one ounce in the dish; in the second, two; and so on.

An ounce weight, fi'", in the first of the seies e'", will balance half an ounce in the dish, which is the minimum generally required in acounter-scale; in the second, one ounce; in the third, one and a half; and so on. The pound and a half weight iybeing one-third heavier than the one i', will, in similar positions, balance an increased amount in the same ratio; thus, being placed in the first of the series e", it will balance one and a half pound; in the. second, three; in the fourth, six; and so on. I

It is, however, preferably employed only in the last of said series, (where it balances twelve pounds,) with the two-poundvweights i', arranged in the next two holes of the series, (balancing seven and' six pounds respectively,) as represented in red outline in fig. two, to balance tn'cnty-five pounds, whichs the maximum generally required in a counter-scale. Other combinations will readily be perceived.

Instead of, this precise manner of operating the scale, it is obvious that many substantiallysimilar, andlfor some uses preferable, arrangements may be employed.

For instance, but one weight or one size of weight may be used, and the holes or cups in one or a plurality of series be so arranged as to indicate the weight in the different denominations; or different sizes of weights in a single series may be employed instead. The number of weights and holes or cups will, of course, be varied to suit the class of weighing the scale is intended to perform.

Having thus described my invention,

I claim as-new therein, and desire to secure by Letters Patent- 1. VA weight, i, constructed of spherical form, and employed in combination with a scale having a beam or lever provided with holes or cups e", substantially in the manner and for the purpose set forth.

2. The combination, with the weigh-beam E, constituting a lever of the first order, ofthe supplementary' lever D, of the third order, interposed between said beam and the dish-frame, as described, for the purpose se't forth.

Tothe above specification of my invention, I have signed my hand, this 8th day of December, 1868.

I DENNIS 'BUOY. vvWitnesses:

W. Oouxnme, OHAs. O. Lone.

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