Calculator Page: 3 of 4
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
2
943,779
the series of indices on the face of the tablet.
The strip 11 carries two index series 20 and
21, the series 20 running from 400 to 600
and the series 21 running from 0 to 200.
5 The several series of numbers given are
not at all mandatory but may be different
from those given which are taken merely as
examples and by suitably enlarging the tab-
let 1 and lengthening the arms S and 9 a
10 great number of index series may be pro-
vided for many different purposes.
As an example of the operation of the cal-
culator let it be assumed that it is desired to
ascertain what would be the cost of 600 lbs.
15 of a commodity at $.07 a pound. For this
purpose the arm S is moved until it is coin-
cident with 7 on the index series 2. This
movement of the arm S has caused the strip
11 to assume a certain position with refer-
20 ence to said arm because of the shape of the
slot 15. Now the arm 9 is moved until it
coincides with the number 600 on the index
20 of the strip 11. By now referring to the
index series 3 it will be found that the
25 pointer end of the arm 9 is coincident with
42 of the index 3 thus showing that at $.07
a pound 600 pounds of a commodity would
come to $42.00.
Suppose it is desirable to ascertain the
30 amount of interest due on a certain sum at a
certain per cent. Under these conditions the
guide pin or stud 14 is moved into the slot
extension 18 and then is moved along the
arm s8 until the number 6 of a series of num-
35 bers 22 on said arm is visible just beyond the
member 13. If now the index or pointer
arm 9 be moved to the number 200 its point-
ed end 10 will be found to be coincident with
the number 12 of the index series 4, thus
40 showing that at 6% the yearly interest on
$200.00 is $12.00. While not so shown in the
drawings it will be understood that for frac-
tions of years other index series may be pro-
vided on the tablet 1. If 5% be the rate then
45 the movement of the strip 11 to bring 5 on
the index series 22 of the arm S just beyond
the member 13 will cause the relation of the
strip 11 to the index series 4 to be such that
the pointer 10 will then be coincident with
50 the number 10 on the index 4.
Suppose it be desirable to ascertain the
price of individual articles where the quan-
tity price is given. The stud 14 is then
moved so as to engage in the slot 19 and the
55 arm 8 is brought into coincidence with the
proper number on the index series 6 and by
moving the index arm 9 to the proper num-
ber on the index series 21 of the strip 10
there will be shown in the index series 5 the
60 individual price of the article. As an ex-
aunple, suppose that ten dozen articles cost
$125.00 and it is desirable to ascertain the
individual cost of an article. Then the pin
14 is moved into the slot continuation 19 and
65 the arm S is brought into coincidence withthe ininiber 10 of the index series 6. Now by
moving the arm 9 to 125 of the index series
21 of the strip 11 it will be found that the
index end of the arm 9 will indicate just
beyond $1.04 of the index series 5 showing y
that the individual cost of alnarticle i ithe
(quantity and at the price named is slightly
over $1.01 each. Of course other index
series many be provided at this point to en-
large the scope of the apparatus but those 71
show)) and described will be sufficient for au
uiiderstandiig of the invention.
It will be understood of course that the
slot 15 may be replaced by a groove where
the tablet 1 is made thick enough, the said 80
slot 15 or groove of like shape serving sit-
ply as a guide for the stud 14 and thereby
causing the strip 11 to have a certain rela-
tion to the arm S in accordance with the po-
sition of the ann with reference to the index 85
series on the tablet or to bring the index
series on the strip 11 into certain relation
with the pointer arm 9 inder certain comli-
tions.
What is claimed is: 90
1. In a calculator, a tablet with indices
thereon amd provided with a guide on its
face, aii arm pivoted to the tablet, an index
member on and movable along the a ntand
constrained by the guide in its relation to 95
the arili, and a pointer ,1 1110also pivoted to
the tablet and adapted to coact with the il-
dices on the arm-carried index member and
the indices on the tablet.
2. In i a calculator, a tablet with indices 100
thereon and provided w;iti a guide on its
face, an ai' pivoted to the ta blet, an tinex
str'imp on and imovabmile aloeug the i1rm and pro-
vided with a projecting miemiber en gaging
the guide, and constrained thereby to de- 105
terimine the relation of the strip to the artn,
and a. pointer arim also pivoted to the tablet
at the saie )oint as the first-namedarm cand
adapted to co-act with the indices of the
arim-carried index strip and the indices of 110
the tablet.
3. In a calculator, a tablet having a series
of indices thereon and also provided with a
guide having a curved projection progress-
ig away from the indices and comtin nations 115
at the ends in different relations to said in-
dices, an arm pivoted to the tablet and
adapted to coact with the indices thereon, an
index strip on and movable along the )'rm
and provided with means engaging the 120
guide, and another ari pivoted to the tablet
and movable into operative relation to both
the index strip and the indices of the tablet.
4. lit a calculator, a. tablet having a series
of indices thereon, and also provide(i with a. 125
guide lavin(' a curved projection prog'ress-
ing away from the indices and contilniationms
at the ends in different relations to the said
indices, an arm pivoted to the tablet and
adapted to coact with the indices thereon 130
Upcoming Pages
Here’s what’s next.
Search Inside
This patent can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Patent.
Goss, George Wilson. Calculator, patent, December 21, 1909; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512717/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.