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UNITED STATES PATENT OFFICE.
JAMES WILLIAM CARTER, JR., OF ABILENE, TEXAS.
INDICATOR.Specification of Letters Patent. Patented Aug. 10, 1920.
Applicationfiled May 29, 1919. Serial No. 300,523.To all whom it may concern:
Be it known that. I, JAMES W. CARTER,
Jr., a citizen of the United States, and a
resident of Abilene, in the county of Tay-
5 for and State of Texas, have, invented cer-
tain new and useful Improvements in Indi-
cators, of which the following is a specifica-
tion. '
My invention is an improvement in in-
10 dicators, and has for its object to provide a
device of the character specified, especially
adapted for use on storage batteries to in-
dicate the condition of the battery, as for
instance, when watered and when charged,
15 and the approximate extent of charging.
In the drawings:
Figure 1 is a front view of the indicator,
Fig. 2 is a horizontal section through the
indicator and its support,
20 Fig. 3 is. a front view of the indicator
valve.
As is known, storage batteries require
watering at least once a week during the
summer months, and every fortnight during'
25 the winter months, and the present inven-
tion is designed to indicate the date of the
last watering, and that of the next, both in.
winter and in summer, and to indicate the
date of charging, and whether full or partly
30 charged, and so arranged that it may be
locked to prevent accidental displacement
or tampering.
In the present embodiment of the inven-
tion a suitable support is provided compris-
85 ing disks 1 and 2 which are superposed and
are rotatable upon each other for a pur-
pose to be presently .described. Another
pair of disks 3 and 4 is provided, and these
disks have each an annular series of regis-
40 tering openings 5 at the periphery of the
disk.
The openings are adapted to register as
shown in Fig. 2, for receiving the shackle
of a padlock 6 of usual construction, to lock
45 the disks together, and to prevent them from
relative rotation with respect to each other.
The disks 3 carry an annular series of
numbers 7, the said numbers being arranged
consecutively, and running from 1 to 31,
50 and representing the days of the month.
The disk 4 has four cutouts or slots 8, 9, 10
and 11, the said cutouts being arc shaped,and the cutouts 8, 9 and 10 being near the
periphery of the disk, and in position to
permit the numerals 7 to appear through the 55
cutouts.
A legend is provided adjacent to each of
the openings 8, 9 and 10, that adjacent to
the opening 8 being "watered," while those
adjacent to the openings 8 ,9 and 10 are 60
"summer" and "winter," respectively.
The disk 3 also carries legends, one of
which "full charged" appears through the.
opening 11. The disk 1 has a series of
legends 12 at its periphery, twelve in num- 65
her, and bearing the month designations,
and the disk 2 has an opening or cut out 13
through which these legends may appear.
The four disks are held to a support 14,
by means of a screw 15, and a suitable ar- 70
bor 16 encircles the screw, the arbor having
spacing ribs for spacing a pair of disks
1-2 from the pair 3-4. It will be under-
stood that suitable advertising matter may
be provided on the edge of the disk 2, which 75
extends beyond the disks 3 and 4,_ or on the
face of the disk 4, and that the improved.in-
dicator may be of any desired material,'as
for instance, cardboard, celluloid, sheet
metal or the .like, and may be suitably or- 80
namented if desired.
In use the indicator is secured to any suit-
able portion of the battery or wherever de-
desired. When the battery is watered, the
disk 3 is turned with-respect to. the disk 4, 85
to bring the proper date of watering.to the
opening 8. Since the openings 9 and 10 are
arranged in such manner as to show /the nu-
merals of the series 7 a week ahead. and a
fortnight ahead, respectively, it will be ob- '90
vious that when the numeral 1 for instance
appears at the cut out 8, the numerals 7
and 15 will appear at the cutouts 9 and '10
respectively.
The arbor 15 has oppositely extending 95
lugs 16 at the disks 2 and 4, to prevent ro-
tation of the said disks, the said disks 2 and
4 being always held in the same position.
I claim:
An indicator comprising a pair of disks 100
held together axially and rotatably with re-
spect to each other, each disk having an
annular series of openings near its periph-
ery, the openings being adapted to register1,349,321,
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Carter, James William, Jr. Indicator, patent, May 29, 1919; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1258931/m1/2/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.