US946822A - Spring-balance. - Google Patents

Description

H. T. GAY.

SPRING BALANCE.

APPLICATION FILED 1 1113.20, 1909 Patented Jan. 18,1910.

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li UFFTC HERMAN T. GAY, SF BALTIMGEE, h-IitRYLAND.

SPRING-BALANCE.

Specification of Letters Patentv llatentcd Jan. 18, 1.910.

Application filed February 20, 1909. Serial No. 429,281.

To all whom it may concern:

Be it. known that I, HERMAN T. GAY, of the city of Baltimore and State of Maryland, have invented an Improved Spring l-lalance or Scale, of which the following is a specification.

This invention consists in a peculiar construction of the various parts of the scale 1 whereby they may be cheaply produced, and easily assembled as will hereinafter fully appear.

tn the further description of the said invention which follows, reference is made to the accompanying drawing, forming a part hereof, and in which,

Figure 1 is a perspective front view of the complete scale. Fig. 2 is a similar view of the face plate of the scale, together with a dotted delineation of a vertically sliding plate forming a part of the scale, illustrating one way of assembling the said parts. Fig. 3 is a section of Fig. 1 taken on the dotted line m. F l is a front view of the face plate in the first state of its manuslotted end is bent backward at a right angle, as shown in Figs. 1 and 52'. Fig. 5 is a perspective front view of the completed ver tieally sliding plate before referred to, tocther with the attachment whereby letters and other small articles can be suspended (hiring the act of weighing, and Fig. 6 is a face view of the said vertically sliding plate before its upper end bent forward at right angle shown in Fi 1, 3 and 5.

fer-ring now to the drawing, 1 is the graduated. face plate of the scale which is first stamped into the shape shown in Fig. 4, in which it is shown as provided with the central vertical slot a and the transverse slot 6 near its lower end. The upper portion of the face plate 1 is roughened at its edges as shown, to prevent the plate sliding through the fingers when the scale is held by hand in the act of weighing; and its lower end is bent backward at a right angle on the dotted line 0.

2 is the vertically sliding plate before referred to, which is first stamped out fiat as shown in Fig. 6. It will be seen that the breadth of this plate is greater than that of the slot a, that at its upper end it is provided with lateral projections (Z, that above the said projections is a neck 0 having a width. which is slightly less than that of the J be al slot (6, and that above the neck, is a perforated bar or head f. The vertically sliding plate as described is then bent on the dotted line 2 so as to bring the bar f and its neck c forward at a right angle as shown in Fig. 5, when the device is in a condition for attachment to the face plate 1. This attachment may be accomplished by passing the bar and neck 6 while the former is in a vertical position through the slot at from the back of the face plate, and then turning the device into its correct position shown in dig. 1 after which it is raised until its lower ad will enter the slot Z) when it may lowed to drop; or it may be inserted thro gh the slot a from the front of the face plate, as shown by its dotted delineation in Fig. 2.

3 is a coiled spring having a diameter less than the width of the slot a2. its upper end is hooked through a hole in the face plate 1, and its lower end similarly attached to the perforated bar f; and the length of the spring is such that when the scale is not facture, or before its lower and transversely in use the bar f will register with the Zero point of the graduation marks on the face of the plate. After the sliding plate is placed in position as described, the spring hook 4 for holding parcels to be weighed, is riveted to the plate; and in order that the scale may be adapted to weigh letters, the hook #l is offset and placed above the extreme end of the plate, as shown in Fig. 1, the letters be ing forced between the hook and the plate as will be readily understood.

I claim as my invention,-

1. .ln a spring balance, a graduated face plate having central vertical slot, and a transverse slot at its lower end across which the face plate is bent backward at a right angle, combined with a vertically sliding plate having a width which is greater than that of the vertical slot in the face plate, an offset horizontal indicating bar at its upper nd the said plate being situated in the rear of the face plate with its lower end extending through the transverse slot in the same and its transverse indicating bar in the front of the face plate, and a coiled spring which forms the connection between the horizontal bar and the face plate, substantially as specified.

2. in a spring balance, a graduated face plate having therein a vertical slot, and a sliding plate which is applied to the rear sitte of the face plate having a neck and a 5 face plate, and which is situated Within the transverse bar WhlCh pro ect horlzontally t vertlcal slot, substantlally as speclfied. therefrom. and which are integral there- A a T T with, the neck being Within the Vertical slot I HERMAB and thehar in front of the face plate, c0n 1- 1 \Vitnesses:

blned Wlth a sprlng WhlCh connects the sand M. T. HOWARD,

transverse bar with the upper portlon of the THOMAS G. HULL.

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