US337772A - Susan - Google Patents

Description

(No Model.)

\ J. A. KNOWLES, Jr., Deod.

s. M. KNOWLES, Executrix. WEIGHING SCALE.

Patented Mar. 9, 1886.

N, PETERS, Phomulho m hw. Washinglon, D C.

UNITED STATES PATENT rricn,

JOHN A. KNOWVLES, J E, OF LOWELL, MASSACHUSETTS; SUSAN M. KNOWLES (EXECUTRIX OF SAID JOHN A. KNOWVLES, JR., DECEASED) ASSIGNOR TO WILLIAM H. THOMPSON, OF SAME PLACE.

WElGHlNG-SCALE.

SPECIFICATION forming part of Letters Patent No. 337,772, dated March 9, 1886.

Application filed January 10, i884. Serial No. 116,084.

To aZZ whom it may concern:

Be it known that I, JOHN A. KNOWLES, the younger of that name, a citizen of the United States, residi ng at Lowell, in the county ot'llIiddlesex and Commonwealth of lliassachusetts,

have invented certain new and useful Improvements in Scale-Beams, of which the following is a specification.

My invention relates to a scale having the scale-beam inclined, as hereinafter described, to enable the same to be easily examined; to the construction of the beam; to means for holding the oounterpoise from slipping on the brace or tare beam, and to means whereby the counterpoise may be immediately set without trial to balance a pan, scoop, or other receptacle of known weight.

In the accompanying drawings, Figure 1 is an isometric view of a scale provided with my 2.1; improvements; Fig. 2, a side elevation of the main beam and parts supported thereon; Fig.

8, an enlarged side elevation of a part of the same, with portions in section; Fig. 4, a vertical cross-section on the line as in Fig. 2

2 Fig. 5, a central longitudinal vertical section through the counterpoise; Fig. 6, a vertical crosssection on the line 3 y in Fig. 3, omitting the sliding weight on the upper graduated scalc-beam; Fig. 7, an end elevation of 0 the outer anglepiece, scale-beams, and brace;

Fig. 8, a side elevation of the outer anglepiece and the scale-beams attached, a sliding poise, the lower part ofthe angle-piece being in section to show the attachment of the rare- 5 beam or brace; Figs. 9 and 10, oblique views,

which represent another way of attaching the tare-beam to the main beam, Fig. 9showinga part of the main beam and brace formed in one piece with each other, Fig. 10 the other 0 end of the braceand theangle-piece connected thereto; Fig. 11, an enlarged view of the upper part of the standard and a portion of the main beam; Fig. 12, a side elevation of part of the scale-beams with sliding poises thereon,

5 a part of the upper poise being broken away to show the recess in the poiseand the projection on the scale-beam.

The platform A, containingthe usual levers,

the column or hollow standard B, connecting- (No model.)

rod C, the beam-head loop D, pivots E E, screw F, balance-ball G, scoop H, and beamhead staple J are all of the ordinary construction and operation.

The beam is constructed in parts,as follows:

A butt or main beam, I, to which the screw F 5 and the pivots E E are secured in the usual manner. The angle-piece or angle-bracketK is in form somewhat like a letter T; but the topis inclined to the shank, as shown, and the vertical part or shank of the bracket K is 6 screwed or otherwise secured to one of the faces of the main beam. Upon the inclined top of the bracket is screwed one end of one or more scale-beams, L L, as shown, the other end of such scale-beam being likewise secured to 6 the inclined top of a similar bracket, K. These scalebeams are figured in the usual manner, for the usual purpose. The bracket last named is provided with a screw-threaded hole, K", and the beam is provided also with 7 a screw-threaded hole, K and a brace or rod, K, which is threaded at the ends, enters said holes and serves to stiffen the scale-beams and prevent their sagging.

The described construction places the gradu- 7 ated and figured surface of the scale-beams at such an angle that they may be easily read without stooping.

The sliding poises L L are of the usual construction, except that the upper one, L", is provided with a slight recess, L*, which leads out of the slot which receives the scale-beam. The upper edge of the scale-beam is provided with a projection, If, which enters said recess when the poise is nearest thefulcruin and pre- 8 vents said poise from being jarred or accidentally moved along on the scale-beam. The brace also serves as a tare-beam and supports a ball or counterpoise, K having a central hole, K, to receive said brace or tare beam, 0 and a groove, K, parallel with and opening into said hole throughout its length. Midway between the ends of the groove a hole, K leads from said groove outward, and aspring, K, bent at the middle into a loop, K, as shown in Figs. 8and 5, is placed in said groove, with the loop in said hole, and the brace be ing placed through the hole the spring bears 2 saw/72 upon the brace and prevents the counter-poise from sliding on said brace or being unintentionally moved.

In order that the tare ofascoop or other receptacle placed on the platform may be allowed for withoutthetronble of weighingsneh receptacle every time it is used, I apply tothe brace or tare beam a stop collar, M, provided with a set-screw, i which turns in said collar and thrusts againstsaid tarebeam'. When the scale is used without the scoop, the counterpoise is moved up against the butt or main beam, but when the scoop is used the counterpoise is moved out against the stop-collar, the stop-collar having been previously set at a point where the scale will balance when the empty pan is placed on the platform, thecoulr terpoise is moved up to said collar, and the poises are at the zero-mark. When the pan becomes worn from use, so as to weigh less, the collar may set nearer the fulcrum; or ifa heavier pan is used the stop-collar, may be moved outward on the tare-beam.

In the modification shown in Figs. 9 and 10 the brace is formed in one piece with the main beam, and the shanks of the angle-pieces are attached to the main beam and brace, just as the angle-piece in Figs. 3 and 6 is attached to the main beam. 7

I claim as my invention The combination of the tare beam orbrace, the weight provided with a holeand a groove extending through the same, and with another hole leading into said groove, and the spring bent as described, as and. for the purpose specified.

JOHN A. KNOWLES, JR.

Witnesses:

ALBERT M. MOORE, EDW. W. THOMPSON.

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