US636389A

US636389A - Automatic weighing-scale.

Info

Publication number: US636389A
Application number: US73296598A
Authority: US
Inventors: Elmer C Pool
Original assignee: ALEXANDER E BAER
Current assignee: ALEXANDER E BAER
Priority date: 1898-10-31
Filing date: 1898-10-31
Publication date: 1899-11-07
Anticipated expiration: 1916-11-07

Description

No. 636,389. Patented Nov. 7, I899. E. O. POOL.

AUTOMATIC WEIGHING SCALE.

(Application mad Oct. 31, 1898. Renewed Oct. 7, 1899.) (No Iodel.) 2 Sheets-Sheet I.

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No 636,389. Patented Nov. 7, I899. E. c. POOL.

AUTOMATIC WEIGHING SCALE.

(Application filed Oct. 31, 1898. Renewed Oct. 7, 1899.) (No Iodel.) 2 Sheets-Shoat 2,

5 WITNESSES IN VENTOI? lzmrafial ATTORNEY UNITED STATES ATENT 'FFICEQ ELMER O. POOL, OF NElV CASTLE, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO ALEXANDER E. BAER, OF SAME PLACE.

AUTOMATlC VJElGHENG SCALE.

SPECIFICATION forming part of Letters Patent No, 686,389, dated November '7, 1899.

Application filed October 81, 1898. Renewed October '7, 1899. Serial No. 732,965. (No model.)

To all whom it may concern.-

Beit known that I, ELMER O. POOL, a citizen of the United States, residing at New Castle, in the county of Lawrence and State of Penn-' sylvania, have invented certain new and use ful Improvements in Automatic Veighing- Scales; and I do 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, reference being had to the aocompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to that class of automatic weighing-scales having the principal mechanism inclosed within a dust-proof case, and arranged within said case an air-chamber having suspended within it a balancing 26 arm, the equalization of the air about said balancing-arm in said chamber causing a regular and even movement of the weight-indicator and instantaneous stopping. The scales may be made with single or double face and with or without a platform; but for counter use the platform and double face are intended, thus showing at once both to the merchant and customer the exact weight of the commodity placed upon the platform.

0 Similar letters refer to similar parts throughout the several views.

Figure 1 is a view from the platform side of the scales with part of the face,walls, and casing removed showing internal arrangements.

5 Fig. 2 is a side view of the combined segment and balancing-arm. Fig. 3 is a side view of the air-chamber with casing removed and showing the combined segment and balancing-arm in position. Fig. 4c is an end or edge 49; View of the air-chamber with the casing removed and showing the combined segment and balancing-arm in position.

A is the combined segment and balancingarm, of which a is the segment; Z), the pivot end; 0, the balancing-arm, and d the shaft.

Bis the air-chamber, and e the end or edge casing of same.

0 is the face of the scales; D, the walls or main casing; g, the internal and principal 5o beam; h, the knife=edge pivots; t', the link connecting said beam with the air-chamber attachment; j, the link connecting said beam with platform-rods 7c; Z, the link connecting the auxiliary beam 0 and uniting connectingrods 7c, and m lugs on inside of side walls of dustproof case, forming seats for brackets n.

0 is the auxiliary beam for increasing the capacity of the scales, adjusted on standard 29 and connected with rods 70 at link I, q the additional weights, and s the weight-indica- 6o tor.

The scales described are what is commonly called platform connter-scales and are intended to have a double face, one for the merchant and the other for the customer, and on the outside, above the platform, will appear the same on both sides and within the dust-proof case have the same supports and bearings on the one side as upon the other.

It is obvious that instead of the lugs on the inside of the main casing the mechanism inside of the dust-proof case maybe supported by a separate framework and also that by a little change and alteration and appropriate attachments the platform may be dispensed with and the scales made into a hanging scale, and the applicant waives nothing by not setting these out in detail.

By the use of the air-chamber the quiver and irregular movement of the weight-indica- 8o tor so common in what are known as butchers and other similar scales are entirely overcome, the equalization of the air about the balancing-arm causing an even and regular movement of the arm and weight-indicator and instantaneous stopping.

By the use of the auxiliary beam and weights the capacity of the scales may be increased to any desired amount,

The operation is simple, to-wit: An article being placed on or in the platform, scoop, or weighing-pan causes a downward movement of beam Q and an upward movement of balancing-arm c and segment a, the cogs in segment a, working in pinion 0, driving the weight-indicator forward, and the air in the air-chamber gives a regular and even movement to the mechanism and causes instantaneous stoppage,

Having described my invention, what I de roo sire to secure by Letters Patent is--- 1. In an automatic weighing-scale,- having a nected With it external to the air-chamber, a pivot end connecting with a beain, and a segment operating the weight-indicator, and said beam attached to the platform and auxiliary beam by means of connecting rods, links, and knife-edge pivots, all substantially as above set forth and described.

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

ELMER C. POOL.

W'itnesses:

CHAS. A. Moonn, J12, E. E. MARSHALL.