US2055092A - Scale - Google Patents

Description

Sept. 22, 1936. G. WALKER ET Ax.

SCALE 2 Sheets-Sheet l Filed March 2l, 1929 N V EN TOR W A TTORNE YS.

Sept. 22, 1936. G. WALKER ET AL SCALE Filed March 2l, 1929 2 Sheets-Sheet 2 ATTORNEYS.

Patented Sept. 22,1936

UNITED STATES PATENT OFFICE lyn, N. Y., assignors to The Jacobs Bros. Co.,

Inc., Brooklyn, N. Y., a. corporation of New York Application March 21,

v Claims.

This invention relates to a functional and structurally improved scale particularly of the platform type and by means of which even balance and over or under weight conditions Will be reg- 5.1istered in such manner as to be plainly apparent to the operator.

A further object of the invention is that of constructing a device of this type in which the parts will seek normally to maintain an evenly balanced condition, and in which, furthermore, the several parts employed will be each individually simple and rugged in construction and be capable of being readily assembled and set up to provide a scale operating over long periods of -time with freedom from mechanical difficulties, and which scale, furthermore, may be sold at a relatively nominal price.

Another object is that of furnishing mecha` nism which may be associated readily with a iinzoished scale, so that, if desired, platform scales, as heretofore constructed, may be advantageously combined with mechanism falling within the province of the present invention.

With these and other objects in mind, refery ence is had to the attached sheets of drawings illustrating practical embodiments of the rinvention and in which Fig. l is a partly fragmentary sectional front View of one type of scale mechanism.

Fig. 2 is a perspective View of certain details of the mechanism shown in Fig. 1.

Fig, 3 is a partly fragmentary sectional front view of another form of scale mechanism.

Fig. 4 is a perspective View of certain details 3 5 of said mechanism, and

Fig. 5 is a partly fragmentary sectional front view of a still further form of scale mechanism.

With a view to avoiding unnecessary illustra-V tion, only a portion of a platform scale has been 497 shown in the accompanying drawings, it being appreciated that mechanisms of this nature are Well known to those conversant with the art, and

that the mechanisms thereof are generally similar, the present invention being capable of ap- 45. plication to various types of structure.

Thus, in Fig. l the numeral 5 indicates the column or post commonly extending from the rear edge of the base which supports the platform, and which latter is connected to move an actuating rod 6. Secured to the upper end of the post or column 5 is the usual type of support '1, providing at its outer end a confining guide 8, within the slot of which the free end of the lever 9 moves. Supported upon this lever is a poise I0, shiftable to register with any of the 1929, Serial N0. 348,754

graduations appearing upon the face thereof, and this lever may be, in turn, supported upon knife edges I I and have its rear end terminating in a pair of upwardly extending spaced arms I2. Mounted between the arms, and preferably upon a screw-threaded rod I3, is an adjusting or setting weight I4, and the actuating rod 6 may be suitably connected to the inner end of the lever, the movements of which latter may be dampened by a dash-pot I5.

The foregoing structure is illustrative, and not to be strictly interpreted. When the invention is employed in connection with a scale of this character, it is preferred that a housing I6 be mounted upon the support 'I, and this housing has at its upper end an opening within which there is displayed a scale or chart I1, the range of which is traversed by 'a pointer I8. This pointer may, as shown in FIig. 2, be formed of a strip bent upon itself to furnish adequate rigidity, and the lower end thereof is secured to the supporting element I9, through which a pin 20 extends, the ends of Which pin are properly carried within the housing I6. A pair of spaced arms 2l form a part of the supporting member I9, and mounted between them is the upper end of a link 22, the lower end of which is pivotally connected, as at 23, to the beam. Also, the supporting member I9 may have, as a part of its body, a counter-weight 24, serving to balance the weight of the pointer.

In a construction of this nature the scale may be operated Vin the conventional manner, and during the movements of the beam incident to such weighing operation, the registering mechanism aforedescribed will have a somewhat magnified movement incident to the structure em ployed, Thus, an operator will be in a position to observe instantly Whether the scale is in an evenly balanced condition, and, due to the fact that this mechanism is connected to the beam adjacent its point of mounting, a minimum of resistance will be offered to the beam movements.

With a structure of this nature, it is usually desirable to provide means whereby the parts will normally tend to maintain an evenly balanced condition. Furthermore, it is desirable that the amount of over or under weight be registered accurately. Thus, a resilient element is employed, and, as illustrated, this element takes the form of a flexion strip 25, the lower end of which is slotted. A screw 26 extends through this slot and secures the strip to one of the arms I2, the strip being free to slide through the extent of the slot, but being held from displacement by the head of the screw. The upper end of this element extends into a casing 21, mounting a pair of opposed pins 28, to engage one with each of the opposite faces of the strip 25, it being noted that by having the'strip adjacent the point of mounting of the beam, most desirable results are achieved. Y Y

Now, referring to the structures shown in Figures 3 and 4, it will beV noted that the reference numerals 5 to I8 inclusive, have been applied to the same parts designated by the corresponding parts in the preceding numerals. In this form of structure, however, the beam carries a post 29 which extends into the housing i6 and this post mounts at its upper end a link 30, Thev lower end of the pointer I8 is mounted by a suitable clamping structure 3l upon the upper end' of a ilexion strip 32 the lower end of which is clamped as in 33 to a bracket 34. The latter is adjustably secured to the casing I6 in any desired manner as, for example, by employing a slot and bolt structure'35. f

It is obvious in the form of construction illustrated as the beam oscillates the post will traverse l an arc which will result in the link being reciprocated. Such movement on the part of the link will cause an oscillation of the pointer to traverse the graduations of the dial Il. Thus, over and under weight will be indicated in a inagnied .manner and moreover the amount of such over or under weight will be registered-the resistance to deection oifered by this stripping assuring this result. f Y

Referring to Figure 5, it will be noted that the registering mechanism has been shown in association with the outerend of the beam 9. Accordingly, the casing I6` is positioned adjacent the outer end of this beam and :inthe illustrated embodiment this casing pivotally vmounts the pointer i8 as at 35. The side of the pointer is counterbalanced as desired as at 3l and an extension 38 is pivotallyfconnectedrto a link 39 the lower end of vwhich is simultaneously con nected to the outer end of thebeam. It will be apparent in this structure that thedesired results l V,are also achieved in that'as vthe outer end of the beam oscillatescorresponding movement on the part of the pointer will follow. lAs shown, aY

flexion strip may be secured to the casing at one end and coupled by means of a series of link connections to the outer end of the beam for olfering increased resistance to the movement thereof.

From the foregoing'it will be'appreciated that among others the several objects of the invention specifically aforementioned have been achieved.

It is, moreover, apparent that'numerous changes in construction and re-arrangement ofV the parts might be resorted to without departing from the spirit of the invention as defined by the claims.

We claim:

l. In combination, ascale of the platform type including a frame, a poise mounting beam, means supported by said frame and pivotally mounting said beam to one side ofits center, means connecting the short arm of said beam to a load receiving platform, means connected to said frame and to said beam adjacent the point of pivotal mounting of the latter to offer increased resistance to movement of said beam beyond an evenly balanced condition, and registering means also connected to said beam for registering the amount of deflection of said beam beyond an evenly balanced condition. Y

2. In combination, a scale of the platform type including a frame, a poise mounting beam, means supported by'said frame and pivotally mounting said beam to one side of its center, means connecting the short arm of said beam to a load receiving platform, a flexion strip having its ends respectively connected to said frame and to said beam adjacent the point of pivotal mounting of the'latter, said strip AJtending normally to maintain said beam in an evenly balanced condition, and .a pointer for registering the amount of deilexion of said strip and the consequent deflection ofV said beam from a balanced condition.

of pivotal mounting of the lattergmeans connected to said frame and cooperating with the opposite end of said strip to maintain said beam in an evenly balanced condition, and registering mechanism connected to said beam for indicating the amount of deflection of the latter beyond an evenly balanced condition.

. 4. In combination, a scale of the platform type including a frame, a poise mounting beam, means supported by said frame and pivotally mounting said beam to one side f its center, means connecting the short arm of said beam to a load receiving platform, a ilexion strip having one of its ends secured to said beam and adjacent the point of pivotal mounting of the latter, apair of opposed members mounted by said frame and to engage said strip adjacent its opposite end where- Vby to normally maintain said beam in an evenly balanced condition, and a registering mechanism connected to said beam to indicate the amount of deflection of the latter from an evenly balanced condition. Y

5. In combination, a scale of the platform type including a frame, a poise mounting beam, means supported'by said frame and pivotally mounting said beam to one side of its center, means connecting the short arm of said beam to a load receiving platform, a ilexion strip having one of its ends connected to said frame, the body of said strip extending substantially Yvertically above said beam and at right angles thereto, means connecting the free end of said strip to said beam whereby tonormally maintain said beam in an evenly balanced condition, and means connected tosaid strip to indicate the amount of deection of said beam from such evenly balanced condition.

GEORGE WALKER. JOHN EARL WOODLAND.

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