Improvements in Weighing Scales.
Year: 1891

page_text: Date of Application (in United Kingdom), 1st May, 1891
Complete Specification Left, 1st May, 1891-Accepted, 6th June, 1891
COMPLETE DIECIFICATION.
Improvements in Weighing Scales.
I, GUSTAVE LUNDBERG, of Logan, in the County of Cache, and Territory of
Utah, United States of America, Gentleman, do hereby declare the nature of this
invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention relates to improvements in weighing scales. The object of the
invention is to provide a weighing scale having an oscillating indicator for ounces
and fractions thereof operated by the main scale beam which carries an adjustable
weight and acts upon a series of supplemental weights; whereby the over weight
will be indicated when the beam is overbalanced, as well as the weight of vessels
placed in the scale pan ascertained before setting the sliding weight carried by the
main scale beam. And the invention consists in the construction and combination
of the parts as will be hereinafter fully set forth and particularly pointed out in the
claims.
In the accompanying drawings forming part of this Specification:
Figure 1 is a perspective view of a weighing scale constructed in accordance
with my invention.
Figure 2 is a longitudinal sectional view.
Fig. 3 is a sectional view taken on the line x-x of Figure 2.
Fig. 4 is a sectional view on the line y-y of Figure 2.
A refers to the base to which the supporting frames are attached, said supporting
frames consisting of uprights B, B upon which the main beam C is fulcrumed by
the employment of the usual knife-edge bearings. Upon the supporting frame
between the uprights B B is located a bifurcated bearing b through which passes a
pin for pivotally connecting thereto bars d and d¹. At the opposite end of the
base A are secured standards E E which carry at their upper ends a plate F having
suitable gauge marks thereon, said gauge marks commencing at zero and being
spaced to represent fractions of ounces. Over each face of the plate F passes the
end of a bifurcated pointer G which is carried by a weighted crank arm H
journalled between suitable supports I and I', the end of said crank arm having a
projecting pin h which enters a slot in a vertically moving basket J hung upon the
end of the scale heam C to move between the side pieces I' and 12 of the frame
which contains the series of weights. This basket J is connected at its central
lower portion by a pivot pin to the bar d¹ hereinbefore referred to, and at one side
extends the projection having a horizontal slot into which passes the pin / carried
by the arm H, so that as this basket moves up and down the pointer G will move
over the scale plate F.
When the pointer G is to one side of the zero mark it will indicate that the
scales are not properly balanced and as it moves towards the opposite end it will

page_text: indicate the fractions of ounces as positioned. The arm H is weighted on the side
opposite the extended portion to properly balance.
Between the vertical frames I and I are hung a series of weights K which are
of less width than the distance between the side pieces of the basket J and each of
these weights is provided with pins kk which enter recesses ii in the side pieces I¹
and 12; these recesses being of diminishing depth as shown in Fig. 3. The
weight K which is supported in the long slot is positioned immediately above the
side frame of the basket but not in contact therewith when the scales are properly
balanced. To prevent longitudinal movement of the weights K I attach to the
side pieces I and I2 plates 2 against which the ends of the pins k will contact and
prevent such movement. By providing V-shaped slots i, friction contact with the
edges of said slots is avoided when the pins rest upon the basket, J.
The portion of the weighing scales thus far described may be used for postal or
other scales without the other parts of my invention; as when a light weight is
placed in the scale pan to overbalance the beam the ounces and fractions thereof
will be properly indicated by the pointer upon the graduated plate F.
The beam C is fulcrumed upon the supports B B and upon the short end is hung
a frame L having a hollowed-out central portion and vertical open-ended slots
through which the pivot pins attached to the side pieces C pass. The upper
portion of this frame L carries the usual pan M and to the lower end is secured a
depending bifurcated pin to which the bar dis pivotally secured. To the upper
edges of the side pieces of the beam C is secured a plate N provided with a
longitudinal slot n adjacent to which is a scale, and through this slot passes a
screw m which engages with a bar C' at its lower end and carries an indicator m' at
its upper end. The bar C¹ is secured at one end to a sliding weight W secured to
a top plate c which extends over the edges of the beams C to hold the weight
movable thereon. The bar C¹ passes through openings in the depending wall c
located at one end of the plate N and this bar C is preferably made up of a slotted
tube within which lies a bar O having notches o for engagement with the lower
portion of the wall c' and beyond this plate the flat bar O is given a half turn to
provide a flat spring portion, the tendency of which is to throw the outer end of
the bar downward to hold the notches therein in contact with the opening in the
transverse plate c¹. The inner end of the spring bar O is screwed into or other-
wise secured to the weight.
By the use of the improved scale hereinbefore described it will be readily seen
that by properly moving the weight W which is done by raising the spring bar
and drawing or pushing the same until the indicator m² is at the proper point, the
weight will be held by the spring bar in the position in which it is placed, and the
indicator m' will indicate the number of pounds or fractions thereof which the pan
will receive before depressing the main beam. In weighing goods, after the weight
and indicator are set as described, when the scale beam is depressed slightly the
pan will contain the exact weight of material indicated by the pointer m' and if
over weight is placed in the pan the beam will be further depressed and the
vertically movable weights K will co-act with the beam and indicate the excess or
over weight.
In handling ordinary groceries the dealer by the use of my improved scale can
ascertain exactly the amount of over weight which they give the purchaser.
These scales may also be used in weighing goods which have to be placed in
dishes, cans or other suitable receptacles, as the weight of the receptacle can be
ascertained by movement of the pointer G, so that in order to give the proper
weight it will be necessary to place sufficient material in the scale pan to depress
the beam and move the pointer G to the point representing the weight of the
receptacle.
This device is convenient and saves time, and indicates to the dealer the exact
amount of over weight. It is obvious that minor changes may be made in the con-
struction and arrangement of the parts without departing from the spirit of my
invention as indicated in the claims.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. The combination in a weighing scale, of a main beam, a support pivoted to
one end thereof, a sliding weight W and a bar O for adjusting the sliding weight,
said weight having attached thereto a slotted tube carrying an indicator which moves
over a scale plate attached to the beam, substantially as set forth.
2. The combination in a weighing scale, of the pivoted beam C having a slotted
scale plate, a movable weight carrying a slotted tube and a locking bar O, a trans-
verse guide having an opening through which the slotted tube and locking bar
passes, said locking bar having notches, substantially as set forth.
3. In a weighing scale, the combination of a main beam consisting of parallel
side pieces suitably fulcrumed, a pan carrying frame through which the tube C
and locking bar passes, said pan carrying frame being pivotally attached to the
side pieces of the beam and provided with a link or bar d connecting the same with
the base frame, substantially as set forth.
4. The combination in a weighing scale, of the pivoted beam C having a movable
sliding weight and means for adjusting and holding the same, a slotted scale plate
over which the indicator passes, a pan-supporting frame hung upon the side pieces
of the beam and connected to the base by a bar d, a basket hung upon the opposite
end of the beam, said basket being located beneath a series of vertically movable
weights and provided with a slotted bar with which the arm of an oscillating
pointer engages, substantially as set forth.
5. In combination with a main beam C and attachments therefor, the vertical
supports I and 12 having slots for supporting a series of vertically moving weights,
a basket or frame located beneath said weights and pivotally attached to the end of
the main beam, said basket being adapted to operate an indicator substantially as
set forth.
6. In combination with the main beam C of a weighing scale, a vertically moving
basket or frame J and bar d' for connecting the same to the base, substantially as
set forth.
7. In combination with a weighing scale constructed substantially as shown, or
the equivalent thereof, standards attached to the same base and carrying a graduated
plate, a pivoted pointer adapted to move in proximity thereto, and means for con-
necting the same to a movable basket suspended from the scale beam, substantially
as set forth.
8. In combination with a scale beam C carrying a basket having a slotted pro-
jection, a pivoted arm weighted to overbalance its projecting portion, said arm
carrying a pointer G and a scale plate F, substantially as set forth.
9. In combination with a series of weights K supports therefor having V-shaped
slots within which the pins carrying the weights lie, and a vertically movable basket
or frame attached to the scale beam, substantially as set forth.
10. In combination with a scale beam constructed substantially as set forth and
provided with an adjustable weight, of a slotted tube C¹ and spring locking bar O
having notches o, said bar being twisted so that the portion in which the notches
are located is vertical and its spring tendency downward, as set forth.
11. In combination with a weighing scale, a beam C, pan-supporting frame L,
bars d and pivoted as shown, and a basket or frame J attached to the main beam
and bar d', said basket being adapted to engage with a series of vertically moving
weights and operating an oscillating pointer which moves over the faces of the
scale plate F, substantially as set forth.
Dated this tné dom
1001
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.