US1513494A - Platform scale - Google Patents

Description

C. L. DAILY PLATFORM SCALE,

Filed Feb. 27. 1923 gwukmtoz C. L. Pail;

attozmq Patented Oct. 28, 1924.

CHARLES L.

PATENT OFFICE.

DAILY, OF OHILLICOTHE, OHIO.

PLATFORM SCALE.

Application flied February 27, 1923.

To a]? whomit may concern:

Be it known that I, Crrannss L. DAILY, a citizen of the United States, residing at Chillicothe, in the county of Ross and State of Ohio, have invented certain new and useful Improvements in Platform Scales; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The primary object of the present invention is to increase the sensitiveness of platform scales and to mount the platform in a manner to prevent dirt and foreign matter from accumulating between the platform and walls of the pit, which causes friction and detracts from the accuracy of the scales, and the invention furthermore precludes adjustment beneath the platform, thereby obviating all chance for fraud or for casual movement of the parts which would necessitate adjustment to insure accuracy of the scales.

Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.

While the drawings illustrate an embodiment of the invention it is to be understood that in adapting the same to meet different conditions and requirements, various changes in the form, proportion and minor details of construction may be resorted to without departing from the nature of the invention.

Referring to the accompanying drawings forming a part of the application,

Figure 1 is a top plan view of a platform scale embodying the invention, parts being broken away,

Figure 2 is a sectional detail on the line 22 of Figure 1, showing the parts on a larger scale Figure 8 is a sectional detail on the line 33 of Figure 1, and

Figure 4 is a detail view in side elevation of the scale beam and its associated parts.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference characters.

The usual pit for receiving the platform Serial No. 621,626.

and adjunctive parts is enclosed by a wall 1 of concrete or like material and the supporting means for the platform levers are embedded or let into the wall, as indicated most clearly in Figure 2. Bolts or studs 2 let into the wall 1 project beyond the inner face thereof and the projecting ends receive a plate or panel 3 to which a. link 4 is attached and which link in turn engages the knife edge pivots of the platform levers 5. A link 6 engages the inner overlapping end portions of the levers 5, as shown most clearly in Figure 3, and is connected by means of a link 7 to the knife edge bearings of the main beam 8 which is pivotally supported at one end and has its opposite end connected to the scale beam 9. A post 10 rising from the bottom of the pit pivotally supports the inner end of the main beam 8, the lever being disposed crosswise of the platform levers 5 and having its outer end connected by means of a rod 11 with the short arm of the scale beam 9, the latter being disposed a convenient distance above the pit and to one side thereof for convenience of reading and adjustment of the weight.

The platform 12 may be of any preferred construction and is provided at its four corners with hangers 13 which are mounted upon knife edge bearings adjacent the pivot ends of the levers 5.

It has been found that by mounting the platform of a scale of the character herein described in the manner set forth, the same is more sensitive and more responsive to variable weightplaced upon the platform and moreover dirt is prevented from accumulating between the walls of the pit and the platform and interfering with the free movement of the latter. It is also observed that the parts disposed beneath the platform are free from adjustment, thereby preventing displacement and decreasing the chance for fraud.

\Vhat is claimed is:

In a platform scale embodying a pit, a wall of concrete enclosing the pit, supports embedded in opposite ends of the concrete wall adjacent the corners of the pit, platform levers, links connecting the outer ends of the platform levers with said supports,

said platform levers having their inner ends overlapped, a main beam disposed transversely of the platform levers, a support within said pit and having the inner end of the main beam loosely connected thereto by a link, said main beam connected at a point intermediate its ends with the overlapping ends of the platform levers by means of a link, and a scale beam having connection with the outer end of the main beam.

In testimony whereof I afiix my signature in presence of two witnesses.

CHARLES L. DAILY.

Y Witnesses:

LATTA MORRISON N. P. BASSETT.

Images