US43511A

US43511A - Improvement in scale-beams

Info

Publication number: US43511A
Authority: US
Publication date: 1864-07-12
Anticipated expiration: 1881-07-12

Description

.I. F. KEELER.

Scale Beam.

Patented July 12, 1864.

h l PETERS, Phmmm n mr, Wahmgmn, n. c.

UNITED STATES PATENT OFFICE.

JOEL F. KEELER, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT lN SCALE-BEAMS.

Specification forming part of Letters Patent No. 13,5l 1, dated July 12, 1864.

To all whom it may concern:

Be it known that I, J. F. KEELER, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and Improved Mode of Constructing the Levers of Platform or other IVeighing Scales; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, with the letters of reference marked thereon, in which- Figure I is a top view. Fig. II is a side view of the said lever, and Fig. IV a crosssection made at the red line a, Figs. I and II. Fig. III is a side view of a new set of combined pivots, m, Figs. I, II, and III.

The nature of my invention consists in forming the levers used in a platform-scale, or constructing the said levers of two or more fiat bars of iron held in a perpendicular position to each other by means of knees and rivets, and in making or forming two pivots in one piece of metal, usually of steel.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

I construct my levers with pivots or bearings made in any of the known forms, and attached to the levers or arms of the scale by any of the known methods; but the levers themselves, or such of them as I choose, I construct of two bars of flat wrought-iron, the lower one lying flat or horizontally, the other resting on its edge about the middle of the lower one and longitudinally with it, as shown in Figs. I, II, and IV of the drawings, in which Fig. I is a top view, Fig. II is a side elevation, and Fig. IV is a crosssection made at the red line (1, Figs. I and II.

Like letters refer to like parts.

0 0 0, Figs. I, II, and 1V, represent the lower bar lying flat, and b 11 represent the upper bar standing on its own edge or narrowest diameter about the middle of the width of the lower one and longitudinally with it. at rep resents knees, so called,for holding the bars together in the position toward each other, just described. 0 represents the rivets which fasten the knees firmly to the iron bars standin g as aforesaid. f represents the forward or minor of the three pivots or bearings necessary for making and using a weighing-lever in platform or other scales. I make this pivot also in any of the known forms, and attach or fasten it to the lever in any'known manner.

122 represents the two main pivots or bearings of a weighing-lever, either of which must sustain the entire weight that is to be weighed at any given draft. They are here combined and made in the same piece of metal for three reasons: first, that there may be less danger of their being displaced in reference to each other; second, that they may be placed closer to each other than they could otherwise be, thus permitting the scales to be made more compactly than otherwise; third, that they may be driven out of the lever which holds them, as seen at m 7:, Figs. I and II, which part of the lever may be called the main pivot-holder, and is made and attached to the rest of the lever in any known manner, and after being driven out may be conveniently fitted up, and their steel edges tempered before being driven to the lever again.

The knees or corner-irons d d I usually make in narrow pieces, and put them on alternately upon the two sides of the flat bar I); but when great strength is required I sometimes put them opposite each other, or make them continuous out of a single piece of angle-iron. By this method of constructing the weighing-levers of scales I am enabled to build scales with less weight of iron and less cost than by other modes of making wrongh tiron scales, and more compact.

What I claim as my invention, and desire to secure by Letters Patent for the purposes mentioned, is

l. The wrought-iron weighing-lever, constructed as described.

2. The combined main pivots, when made as described.

3. The construction of the main pivotholder m h with the arrangement of pivots therein, substantially as shown.

Iittsburg, Pa., January 11, 1863.

JOEL F. K EELER.

Witnesses Gno. F. GILLMORE, WM. 0. GILLMORE.