Weighing Scale Page: 2 of 3
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Patented June 7, 1904.
UNITED STATES PATENT OFFICE.
CLARENCE W. McKEE, OF EL PASO, TEXAS.
WEIGHING-SCALE.
SPECIFICATION forming part of Letters Patent No. 762,187, dated June 7, 1904.
Application filed November 2, 1903. Serial No. 179,573. (No model.)To all whbom7Y it may concern:
Be it known that I, CLARENCE W. MCKEE,
a citizen of the United States, residing at El
Paso, in the county of El Paso and State of
5 Texas, have invented new and usefulImprove-.
ments in Weighing-Scales, of which the fol-
lowing is a specification.
This invention relates to Veighing-scales.
The object of the invention is in a ready,
1o simple, thoroughly efficient and practical man-'
ner and by audible means to notify a purchaser
when correct weight has been given and to
prevent overweighting, with consequent loss
to the seller; furthermore, to obviate fric-
15 tion between the operative parts of the mech-
anisin, thereby to prevent any interference
with the correct operation of the scales.
With the above and other objects in view,'
as will appear as the nature of the invention
20 is better understood, the same consists, gen-
erally stated, in combining, with an ordinary
balance-beam weighing-scale, a signaling de-
vice operated by the movement of a scoop,.
said signaling device embodying in its con-
25 struction a movable conductor including make-
and-break mechanism, a guide for the con-
ductor constituting a contact, a resilient con-
tact, signaling mechanism in the nature of a
bell, and connections between the parts in cir-
30 cuit with a suitable source of electrical energy.
The invention consists, further, in the novel
construction and combination of parts of a
weight-signaling device for weighing-scales,
as will be hereinafter fully described and
35 claimed.
In the accompanying drawing, forming a
part of this specification, and in which like
characters of reference indicate corresponding
parts, there is illustrated one form of embodi-
40 ment of the invention capable of carrying the.
same into practical operation, it being under-
stood that the elements therein exhibited may
be varied or changed as to shape, proportion,
and exact manner of assemblage without de-
45 parting from the spirit thereof, and in the
drawing the figure is a view in side elevation,
partly in section, exhibiting an ordinary bal-
ance-beam weighing- scale and connections
between it and the signaling mechanism.
50 In the present instance the improvementsare shown as combined with an ordinary bal-
ance-beam weighing-scale A, this for the pur-
pose of convenience of illustration; but it is
to be understood that the invention is not to
be limited to this form of scale alone, as the 55
improvements are equally adaptable to other
forms and may be applied thereto without
departing from the scope of the invention.
The scale is herein shown as resting upon a
counter B, beneath which is secured a vertical 6o
partition or support C, to which a part of the
apparatus embodying the present invention is
secured, as will be hereinafter fully described
and claimed.
To the lower end of the link 1, depending 65
from the ordinary yoke 2, is pivotally con-
nected a movable conductor 3, preferably of
copper, the same having let into it on one side
thereof insulating-plates 4 and 4", in this in-
stance two, separated a short distance apart. 70
The lower portion of the conductor projects
through a sleeve 5, carried by a bracket 6,
preferably of copper, and secured to the sup-
port C, the bracket constituting a contact for
completing the circuit between the conductor 75
and the source of electrical energy, in this in-
stance a plurality of dry cells 7, although it
is to be understood that, if preferred, other
sources of electrical energy may be employed.
The conductor 3 moves easily within the sleeve So
5, and therefore the frictional contact between
the parts will be so slight as not in the least
to interfere with the accurate operation of the
scales.
Supported in any suitable manner adjacent S
to the conductor is a metallic plate 8, to which
is connected a resilient contact 9, the same
being, preferably, of light spring metal adapt-
ed to rest against the movable conductor, the
contact being such that while thoroughly ef- 90
ficient for completing the circuit it will not
present such frictional resistance as to inter-
fere with the vibrations of the beam in the
weighing of articles. This contact is herein
shown in the nature of a leaf-spring; but it is 95
to be understood that any other form of con-
tact capable of performing the same function
may be employed, if found necessary or desir-
able, and still be within the scope of the in-
vention. The signal, as usual in devices of 100No. 762,187.
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McKee, Clarence W. Weighing Scale, patent, June 7, 1904; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth514243/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.