US389223A - Pettefis - Google Patents

Description

(No Model.) 2 SheetsSheet l G. P. HILL & A. L. WASHBURN.

COIN CONTROLLED WEIGHING SCALE.

No. 889,223. Patented Sept. 11, 1888.

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UNITED STATES PATENT rains.

ASSIGNORS OF C(Tlfill'l.

COIN-CONTROLLED VVEiGHlNG SCALE.

SPECIFICATION forming part of Letters Patent No. 389,228, dated September 11, 1888.

Application filed August 10, 1887.

F aZZ whom it may concern.-

Be it known that we, GEORGE P. HILL and ALBERT L. XVASHRURN, both citizens of the United States, residing at Niantic, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in \Veighing-Scales, of which the following is a specification.

Our invention relates to improvements in weighing-scales of the class in which the weight of the person is shown by the introduction of a coin into the machine; and the objects of our invention are to simplify the construction, to positively connect the dial and index with the weighing mechanism, and in general to inr prove the efficiency of the machine.

In the accompanying drawings, Figure l is a front elevation of the upper portion of our weighing-scales with the front board removed. Fig. 2 is a vertical section on line so :0 of Fig. 1, showing most of the parts in elevation. Figs. 3 and at are detail views illustrating the tripping mechanism. Fig. 5 shows the coinreceiver and one tripping-lever arranged in proper relation to said receiver. front view of a portion of our machine, show ing the dial as it appears when a person is on the weighing-platform and has deposited a coin in the machine. Fig. 7 isa horizontal section (on a larger scale than Figs. 1 and 2) of the case, with a plan view of the inclosed meclr anisni. Fig. 8 is a horizontal section of my machineon a linejust above the shaft ill. Fig. 9 is a front view of a portion of the pivotal bar, together with a sectional view of its fulcrum; and Fig. 10 is a plan view of one end of the pivoted bar and the coin-receiver attached thereto.

A designates the case, of any desired con struction, having mount-ed therein the frame B, spring 0, sliding rack D, and pinion E, all of ordinary construction, and connected by the rod F with any ordinary platform and weighinglevers in any ordinary manner.

As in other weighing-scales, the pinion E has attached to it the indicator-shaft a, to which shaft we secure a revolving dial,G,graduated into any desired number of divisions, according to the capacity of the scale-as, for instance, from zero to three hundred pounds. In the front part of the case A, at the proper Fig. 6 is a Serial No. QMLSSR. (Noniorleh) point, there is an opening, I), which reveals one edge of the dial, as shown in Fig. 6, said opening also being indicated by the oval figure in broken lines in Fig. 1. In connection with this opening and dial we ailix to the front part of the case a stationary index or pointer, 0,

Fig.6. The mechanism thus far described constitutes a complete weighing machine which will indicate correctly the weight of a person do or other object placed upon the platform of the scales. In order that this weight may be read only when a coin is deposited in the machine, we provide a pivoted bar, (I, hung upon a suitable fulcrum, e, and counterbalanced by an adjustable weight, f, so that said bar in its normal position comes over the front edge of the dial at the point where the opening 1) and index care located, so as to conceal the figures indicated on the dial from sight. This pivoted bar (Z is provided at one end with a coin-receiver, g, the same being located im mediately underneath the chute h, for directing a coin into the coin-receiver g. This c0inreceiver is shown in vertical section in Fig. 5, and has an open top,while at the botionnupon one side, the wall inclines downward toward the oblique exit j, Fig. 5. A stop, It, is pivotcd, as at 7.:, Fig. 5, to one of the upper corners of the coiirreceiver g, with an angular 8) portion of said stop partially closing the exit j, so that a coin of a given size will not pass therefrom until said stop is lifted out of the way, the broken circle in Fig. 5 indicating the outline of such coin. Said stop 7; is forked at its pivoted end,and its two arms extend along by the sides of the open top, so that it does not obstruct the upper end of the coin-receiver. The pivoted bar (Z is so balanced that when the receiver 9 is empty it will remain in the position shown in Figs. 1, 2, and 5; but by the introduction of a proper-sized coin into the receiver the bar will swing on its fulcrum into the position indicated by broken lines in Figs. 1 and 6, the broken line in the latter fig are indicating the upper edge of said bar. This uncovers the indicator and enables the person to read his weight.

\Vithin the frame of the weighing mechanism,in suitable bearings, we hang the shaft in, 100 to the ends of which we secure the trippingarms a and 0. The arm n is immediately back of the rack D, and is provided with a springpressed slide, 9, the spring having a tendency to press the slide outward against the rack. On the back of the rack a recess, D, is iormed in such a position that when zero is indicated this recess will be immediately opposite the slide 12, and consequently the slide will not bear against the rack at all, but is free to drop downward until its motion is limited by the arm a coming in contact with the stop q. (See Figs. 3, 4., and 8.) Thus when zero is indicated the tripping-arms n and 0 will fall to their lowermost position. These arms are both rigidly affixed upon the shaft in; but one or both of them may be adj ustable thereon and held in position by a set-screw. \Vhcn aperson steps upon the platform of the scales, the rack D is pulled downward,and sosoon as the recess in the back of said rack passes the slide p the solid part of the rack, bearing on the beveled upper side of said slide, pushes said slide inward against its spring, while the stop (1 prevents the arm containing said slide from moving farther downward. A coin is then deposited in the chute h, whence it falls into the coin-receiver g, and causes the end of the bar (1 containing said receiver to fall into a position where the end of the pivoted stop It will be only slightly above the outer end of the tripping-arm 0, as indicated by the broken lines in Fig. 1, the movement of the bar (1 being limited by the stop-lugs on the case immediately above and below the counterpoise or weightf. The pivoted bar (1 is thus carried downward, so as to reveal the weight indicated on the dial, as shown in Fig. 6. As soon as the weight upon the platform is removed, or even partially removed, so as to allow the rack D to rise a little, the spring pressed slidep, pressing against said rack, will rise with said rack into the position shown in Fig. 4, thereby rocking the shaft 177. and elevating the tripping-arm 0 suificiently to raise the pivoted stop It high enough to release the coin, after which release the pivoted bar 41 is returned to its normal position. No weight can be read again until another coin is deposited in the machine.

\Ve hereby disclaim the combination of a disk adapted to be rotated under the force or weight applied to the apparatus, an iuclosingcase, its front having an opening through it to expose the graduations on the disk, a passage adapted to receive a coin of certain size, a

cover for said opening, and an obstruction in said passage in connection with said cover, substantially as described, and whereby the coin so introduced will strike the said obstruction and by its weights remove the cover from said opening and expose the graduations on the disk.

We claim as our invcntiou- 1. In a weighing-machine, the combination of the rack having a recess on one side-as, for instance, the back side-the rockshaft m. tripping-arms n 0, mounted on said shaft, and a stop to limit their downward movement, the spring-pressed slide carried by the arm n and adapted to bear against the rack, and the stop of the coin-receiver within the path of the tripping-arm 0, substantially as described, and for the purpose specified.

2. In a weighingmachine, the combination of the coin-receiver having an open top for the entry of the coin and at a point below said top a discharge aperture, the stop It, having a forked end, the two arms of which extend along by the sides of said open top, said top being pivoted to the upper part of said coinreceiver and having its lower end partly covering the dischargeaperture, and tripping mechanism for contacting with thefree end of said step and operating it to free said discharge-aperture, substantially as described, and for the purpose specified.

3. The combination of a weighing-machine and its indicator with a covering device whose movement covers and uncoversthe weightindicated,the(-oin-receivernecessarily moving with said covering device, thepivoted stop 7;, mounted on said coin-receiver, the swinging trippingarm 0 for contacting with the free end of the stop, said arm being set at a pointjust below the lowest point in the downward movement of said stop, and mechanism connecting said arm with that portion of the weighing mechanism which moves under the influence of a persons weight, whereby the tripping-arm 0 is thrown upward against said stop to raise it and release the coin by the upward movement of said part of the weighing mechanism, substantially as described, and for the purpose specified.

GEORGE P. HILL. ALBERT L. \VASHBURN.

\Vi tn esses:

M. W. COMSTOCK, L. O. CoMs'rocK.

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