US830856A - Suspension bearing-scale. - Google Patents

Description

No. 830,856. PATENTBD SEPT. 11, 1906.

W. H. SARGENT. SUSPENSION BEARING SCALE.

APPLICATION TILED NOV. 22. 1905.

form of bearing. same. Fig. 7 is an elevatlon of a double loop UNITED STATES PATENT OFFICE.

\VILLIS H. SARGENT, OF ST. JOHNSBURY, VERMONT, ASSIGNOR TO E. AND T. FAIRBANKS AND COMPANY, OF ST. JOHNSBURY, VER- MONT, A CORPORATION OF VERMONT.

SUSPENSION BEARING-SCALE- Specification of Letters Patent.

Patented Sept. 11, 1906.

Application filed November 22,1905. Serial No. 288.579.

To all whom it may concern:

Be it known that I, WILLIs H. SARGENT, a citizen of the United States, residing at St. J ohnsbury, in the county of Caledonia, State of Vermont, have invented certain new and useful Improvements in Suspension Bearing- Scales, of which the following is a description, reference being had to the accompanying drawings and to the letters of reference marked thereon.

This invention relates to suspension-bearing weighing-scales, and has for its principal object to provide an improved construction of bearing of that type in which agate or similar non-corrodible material is employed.

With this and other objects in view the invention consists in the novel construction an d arrangement of parts hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims.

In the drawings, which illustrate the invention, Figure 1 is a plan view of one of the bearings or loops. Fig. 2 is an elevation of the same. Fig. 3 is an end view of the bearing, taken at a right angle to Fig. 2 and showing one of the levers in section. Fig. 4 is a face view of a portion of one of the levers. Fig. 5 is an elevation of a slightly-modified Fig. 6 is an end view of the for use at the center of the scale, and Fig. 8 is an end elevation of the same, and Figs. 9 and 10 show difierent-forms of loops which may be employed.

Similar reference characters indicate simi lar parts throughout the specification and drawings.

The bearings are each formed of a block b, of non-corrodible material, such as agate, and each block has a recess it formed in one face for the reception of a knife-edge or similar pivot. That face of the block opposite the I notch fits within the parallel side flangesf of a plate a, formed, preferably, of metal, and the opposite ends of said plate are provided with alining notches g for the reception of the side bars of a loop or bail c, the ends of which may be lap-jointed, as shown at b in Fig. 9, or may abut, as shown at 6 in Fig. 10, or the link may be continuous.

In order to reduce friction between the bearing-block and the lever, it is found desirable to provide the latter with a reduced friction-point i, arranged in vertical alinement with the knife-edge and designed for contact with the side of the block. Inasmuch as the friction-point is disposed in part in the plane of the flange f, the latter is recessed or spaced, as clearly shown in Fig. 2. This construction, however, is not essential in all cases, and the flange may extend all the way across the block, as shown in Fig. 5. v

The side bars of the link are bent inward, as at d, in such manner as to allow slight freedom of movement of the block without permitting detachment.

The construction is such that the bearing rocks on the back of its mounting, and the cross-bar of the loop forms a support that eX- tends entirely across the block. The latter is thus furnished with an efficient support, but is free to rock, so that the sensitiveness of the scale is materially increased.

The several corner-bearings are arranged in the manner described, and for the center of the scale a double bearing, as shown in Figs. 6 and 7, is used, each loop holding two opposed bearing-blocks and the side walls of the link being bent inward, as shown at d, to prevent displacement of either block.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a scale-loop, a bearing-block, a backing-plate therefor, and a bail entirely encircling the block and plate, but in engagement only with the outer face of the latter, the plate serving to hold the side arms of the loop out of contact with the sides of the block, substantially as described.

2. In a scale-loop, a bearing-block, a backing-plate having edge flanges fitting over the block and having end notches, and a bail or link member encircling the block and entered in said notches.

3. In a scale-loop, a bearing-block, a backing-plate having end notches, and a bail fitting in the notches and encircling the plate and block, the sides of the bail being free from engagement with said block.

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

WILLIS n. SARGENT.

. Witnesses:

FRANK O. FRENCH, J. M. PERHAM.

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