An Improved Calculating Apparatus.
Year: 1899

page_text: Date of Application, 26th Aug., 1899
Complete Specification Left, 25th May, 1900-Accepted, 30th June, 19C0
PROVISIONAL SPECIFICATION,
An Improved Calculating Apparatus.
We, FRANCIS ALAN WILKINSON, of 39, Eccles Old Road, Pendleton, Man-
chester, CLAUD CAREW GIBSON, of Hampden House, Phoenix Street, London,
N.W., and FERDINAND EDWARD REISS, of 70, Barton Arcade, Manchester, Elec-
trical Engineers, do hereby declare the nature of this invention to be as
follows:
The improvements relate to calculating mechanism, and have for object to
provide apparatus of a simple and convenient character which shall be capable
of successively indicating a number of figures at the will of the operator, and,
at the same time, of automatically recording the sum or net total thereof, in
manner hereinafter to be described.
To accomplish this and to carry out our improvements, we provide a suitable
casing, by preference in the form of a watch case, and of a readily portable
character, provided with an indicating dial or dials, and also with a recording
dial or dials, each dial being suitably divided and marked, and also provided
with a pointer or pointers.
The pointers are mounted in connection with gearing of any desirable charac-
ter, in such manner that, on the movement of a key or other actuating device,
they are simultaneously operated, but means are provided to enable either set
of pointers to be moved independently of the other set, when required, for ad-
justment purposes. The indicating portion of the mechanism is, by preference,
connected to the recording portion when the key is brought into operation, but
disconnected therefrom when such key is released.
The action of the apparatus is as follows:
Supposing the operation to commence from zero, the first figures are, on
manipulation of the key, indicated equally upon both dials, or sets of dials. The
indicating pointers are then put back to zero, by any suitable means, and on the
succeeding operation of the key, while the next figures are simply indicated
upon one dial, the total of the two operations is shown upon the other or record-
ing dial, the recording pointers not having been re-adjusted after the first opera-
tion. In like manner, any number of successive figures or combinations of
figures may be indicated, and their total recorded.
Also, as a modification, the indicating dial or dials may be so marked that,
on the movement of the pointers in a reverse direction, a minus indication may
be readily effected, and a corresponding deduction recorded, and means may
be provided, in addition, for recording the results upon paper, or the like.
P
1000
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester,
Agent for Applicant.

page_text: We, FRANCIS ALAN WILKINSON, of 39, Eccles Old Road, Pendleton, Man-
chester, CLAUD CAREW GIBSON, of Hampden House, Phoenix Street, London,
N.W., and FERDINAND EDWARD REISS, of 70, Barton Arcade, Manchester, Elec-
trical Engineers, 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: -
The improvements relate to calculating mechanism, and have for object to
provide apparatus of a simple and convenient character, which shall be capable
of successively indicating a number of figures at the will of the operator, and,
at the same time, of automatically recording-that is to say, reckoning and
displaying the sum or net total thereof, in manner hereinafter to be described.
To accomplish this and to carry out our improvements, we provide a suitable
casing, by preference in the form of a watch case, and of a readily portable
character, provided with an indicating, or item, dial or dials, and also with a
recording, or result, dials or dials, each dial being suitably divided and marked,
and also provided with a pointer or pointers. The pointers are mounted in
connection with gearing of any desirable character in such manner that, on the
movement of a key, or other actuating device, they are simultaneously operated:
but means are provided to enable either set of pointers to be moved indepen-
dently of the other set, when required, for adjustment purposes. The indicating
or item portion of the mechanism may be connected to the recording or result
portion when the key is brought into operation, and disconnected therefrom
when such key is released.
But that the improvements may be better understood, we will proceed more
fully to describe means employed by us, reference being made to the accom-
panying drawings, which show one form of our invention adapted to the cal-
culation of amounts in British coinage, although the improvements are equally
applicable to different subjects, such as measures of length, or the like.
DESCRIPTION OF DRAWINGS.
Fig. 1 shows a side internal view of apparatus formed in accordance with our
improvements, and on a larger scale than is intended for convenient use, while
Fig. 2 shows a part of the same view on a still larger scale.
Fig. 3 shows a front view, partly in elevation and partly internal, of the appara-
tus, taken at right angles to Fig. 1, and Fig. 4 shows a detailed view of certain
parts to be hereinafter described.
The same letters indicate corresponding parts wherever they occur.
a is the outer casing of the apparatus: bare outer plates, and care inner
plates, serving to support various parts of the construction; b being also,
employed as dial plates.
Two shafts are mounted to turn in the plates aforesaid, d carrying an
attached bevel wheel gearing permanently into a second bevel wheel g upon
the spindle connected to the cap i, which cap is capable of being turned by
hand to operate h g. Upon the shaft a third bevel wheel k is mounted so as
to be capable of sliding upon a key el, in order to be brought into gear with the
bevel wheel g.
The necessary actuation to effect this clutch movement is accomplished, in the
example shown, by means of a spindle 7 projecting through to the exterior of
the apparatus, the lower extremity of which spindle is provided with an

page_text: incline, so that, when the said spindle is depressed by the operator, the upper
arm of the lever m, fulcrumed at m', is moved towards the plate c¹, the lower
arms of such lever being, consequently, forced in the contrary direction, thereby
pushing bevel wheel into gear, as already referred to. A front view of the
lever m and wheel is shown in Fig. 4.
Springs are shown at and to effect the return of parts k m 1 on release.
A star wheel h¹ upon the spindle h, controlled by a spring pawl h² mounted on
the casing, prevents the spindle h being accidentally turned from any ordinary
cause, but the power of the said spring pawl h³ may be overcome by the operator
on turning the cap i.
The pointers n n¹ are connected to their respective shafts de, but the
pointers are respectively mounted upon sleeves pp, riding loosely upon
the said shafts de, which sleeves receive a reduced rate of motion from such
shafts by means of ordinary gearing r r respectively, and impart a further
reduced rate of motion to the pointers through the gearing t t.
The operation is as follows:-
Supposing the calculation to commence at zero, the spindle 7 is depressed to
place wheel into gear with wheel g; the cap is then turned and the whole
gearing is set in motion, all the pointers being moved until the desired figures
forming the first item are indicated equally upon both sets of dials.
The spindle is then released, whereby shaft e together with its train, is
disconnected.
The spindle is then turned so as to bring back to zero all the item indi-
cators nos, the pointers no s¹ remaining stationary.
On the succeeding operation, which is an exact repetition of the foregoing.
while the second item is simply indicated, as before, by the pointers
nos, the
recording pointers ¹¹¹ will show a result equivalent to the sum of the two
items, having travelled over the combined distances of the two forward move-
ments without having been set back.
In like manner, any number of successive figures or combinations of figures
may be indicated, and their total recorded. Also, by actuating the mechanism in
a contrary direction, items may be subtracted when desired; in which case it
may be preferable, as a modification, to mark the item indicating dial with
double sets of figures progressing in contrary directions, so that plus or minus
indications may be obtained with equal readiness, and corresponding results
effected.
It will be seen that when the item and result portions of the mechanism are
disconnected, as described, either set of pointers may be moved independently of
the other set, when required, the item indicating set being so adjusted from
the actuating device by preference; although, as a variation, such device may be
made capable of sufficient vertical movement to cause disconnection thereof
from both sets of mechanism, when desired; in which case the clutch movement
of the wheel k may be dispensed with.
It is obvious that, by multiplying the mechanism described, a greater number
of indicating dials than are shown may, in like manner, be applied to one
apparatus also by attaching markers to the pointers, in some cases, the results
may be recorded upon suitably prepared paper or other like sheets, by traced
lines thereon.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In a portable calculating apparatus, item indicating pointers capable of
being operated in either direction, at will, by means of a hand actuating device;
in combination with result indicating pointers, also moveable in either direction
by means of the said hand device, the item and result indicating mechanisms
being capable of disconnection in such manner that they may be rendered

page_text: independent of each other, when required for adjustment purposes; such item
and result indicating mechanisms being relatively arranged and combined sub-
stantially as herein shown and described.
2. In a portable calculating apparatus, item indicating pointers capable of
being operated in either direction, at will, by means of a hand actuating device;
in combination with result indicating pointers, also moveable in either direction
by means of the said hand device, the item and result indicating mechanisms
being capable of disconnection, in such manner that they may be rendered inde-
pendent of each other, when required, the several parts of the apparatus being
combined and arranged substantially as herein described and as shown in the
accompanying drawings.
Dated this 22nd dow of W 1000
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester,
Agent for Applicant.