US2333735A

US2333735A - Weighing scale construction

Info

Publication number: US2333735A
Application number: US350050A
Authority: US
Inventors: Ort William
Original assignee: WALTER F STIMPSON
Current assignee: WALTER F STIMPSON
Priority date: 1940-08-02
Filing date: 1940-08-02
Publication date: 1943-11-09
Anticipated expiration: 1960-11-09

Description

INVENTOR.

ATTO EYS Nov. 9, 1943. w. ORT

. WEIGHING SCALE CONSTRUCTION Filed "Aug. 2 1940 WILLIAM ORT Patented Nov. 9, 1943 William Ort, Louisville, Ky., assignor to Walter F. Stimpson, Louisville, Ky.

Application August 2, 1940, Serial No. 350,050

2 Claims.

This invention relates to weighing scales, and particularly to improvements in stirrup mechanisms for connecting the load counterbalancing means to the weight indicating means of such scales. An important object of the invention is to provide such a stirrup mechanism which is simpler and less expensive to construct and install than previously known devices of this class, and which provides for universal and practically frictionless movement between the parts it connects.

Still another object is to provide such a stirrup assembly which is constructed entirely of sheet metal, and in which the alignment of the part is positively maintained in a novel and extremely simple manner.

Other objects and advantages will be apparent from the following description, wherein reference is made to the accompanying drawing illustrating a preferred embodiment of my invention and wherein similar reference numerals designate similar parts throughout the several views.

In the drawing:

Figure 1 is a front elevational view of a weighing scale provided with stirrup means constructed in accordance with the present invention.

Figure 2 is an enlarged view, partly in front elevation and partly in vertical section, showin the manner in which the stirrup mechanism is supported and connected to the nose iron.

Figure 3 is a sectional view taken substantially on the line 33 of Figure 2, and looking in the direction of the arrows, parts of the supporting bearings for the hand and pendulum assembly being broken away in a different plane, and

Figure 4 is a perspective view of the stirrup and a part of its supporting strap.

Referring now to the drawing: reference character lli designates the base of a fan-type computing scale, the several parts of which are illustrated as arranged conventionally, insofar as their general disposition is concerned. A load (unshown), placed upon the platform [2, actuates, through main lever M, the weight indicating hand IS, the connection between these parts comprising a strap ll wrapped around and serving to actuate an eccentric 18 attached to the hand assembly, the hand also being formed as a unit with the pendulum assembly 20. The lever carries a nose iron 22 which at its outer extremity is articulated to the plunger of a dashpot, 25.

Upon its under side and also near its outer extremity the nose iron carries a pointed bearing member, 30, adapted to rest in an agate cup,

32, carried by the U-shaped sheet metal stirrup 33. Flanges 34 are turned upwardly from the interior of the stirrup to position the agate bearing cup, which may also be cemented in position.

A relatively heavy sheet metal cross bar, 35, extends between the sides of the stirrup at the top, and lies in a vertical plane. The ends of the cross bar project into slots in the sides of the stirrup and may be peened to secure the parts together and stifien the assembly. Centrally in the lower edge of the cross bar, and in vertical alignment with the cup in bearing block 32, a relatively wide slot 31, having perpendicular side edges, is provided. The mid portion of the upper edge of the slot is shaped to provide a rounded, downwardly projecting reentrant section 40.

A sheet metal hanger 42 surrounds the slotted section of the cross bar, and is trapped in the slot against lateral displacement although otherwise freely rockable with relation to the stirrup. The lowermost portion of the hanger consists of a flat and-horizontal section 43 which underlies and supports the rounded portion 40, extending through and substantially filling the space between the side walls of the slot 31. Section 43 of the hanger is narrower than the slot however, so that the stirrup is freely rockable with relation to the hanger, universal relative motion being provided by this mounting in cooperation with the free flexibility of the supporting strap I! in the transverse direction. The upper ends of the hanger converge toward fiat lands which are adapted to be clamped to the strap IT, by means of a screw 45, to secure the hanger to the strap and thus support the stirrup.

The ability of the assembly to accommodate itself to the varying angular relationships between the nose iron and the strap will be apparent. Despite its simplicity, it is of great strength, and disalignment of the parts is impossible, since the interior dimensions of the triangle formed by the sides and bottom of the hanger are too small to allow the hanger to escape from slot 31, as shown in Figure 2.

I am aware that the invention may be embodied in other specific forms .without departing fro the spirit or essential attributes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive; reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

I claim:

1. A stirrup for weighing scales comprising a generally U-shaped sheet metal bearing support having substantially parallel upstanding arms, a crossbar extending between said upstanding arms substantially in a vertical plane, the lower transverse edge of said crossbar having a relatively wide downwardly open notch therein, the upper wall of the notch having a rounded downwardly projecting reentrant rocking surface arranged substantially centrally between the sides of the notch and projecting downwardly to an extent le'ss'thanthe fdep'th of the'not'ch, a sheetmetal hanger looped "around -sai'd"crossbar an-d loosely fitted in but substantially filling the width. of said notch and retained between the sides thereof, said hanger having a substantially flat and horizontal bottom surface underengaglng said rocking surface to rockably support the stirrup, and means for supporting the hanger from above the crossbar.

2. Means as set forth in claim 1 in which the loop formed by said hanger is larger than the notched portion of the crossbar but smaller than the other portions of said crossbar, whereby disprevented.

WILLIAM ORT.