Improvements in Counters or Registering Mechanism.
Year: 1889

page_text: Date of Application, 22nd Nov., 1889
Complete Specification Left, 21st Aug., 1890-Accepted, 22nd Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Counters or Registering Mechanism.
I, ROBERT JEWELL of 9 Victoria Road, Battersea Park, Surrey, Gentleman, do
hereby declare the nature of this invention to be as follows:-
According to my invention I construct a counter or registering mechanism as
follows:-I mount loose upon a rod or spindle a series of hollow discs or cylinders
fitting closely side by side, as the discs or drums of ordinary counters, and having
numerals or other ciphers marked on their cylindrical surfaces.
Each cylinder has a series of holes or notches on its outer periphery into which
takes a spring catch carried by the framing of the counter, so as to hold the cylinder
in position. Within the cylinder is a ring or second cylinder having a corresponding
number of holes or notches, and on the end of the adjacent cylinder is a spring pawl
which at each complete revolution of the cylinder is raised up by a fixed cam on the
rod or spindle so as to enter one of the said inner holes or notches of the next
cylinder, and thereby, in revolving, to carry the next cylinder round with it a
certain distance, determined by the shape of the cam. As the next cylinder is
held by the catch entering one of the outer notches, as first described, it is
necessary that this catch shall be released at the moment when the inner pawl or
catch is about to engage with the inner hole. This is effected by a small cam or
tappet on the outer periphery of the cylinder, which, when this is arriving in the
position in which its inner catch gears with the next cylinder, is made to act
upon an arm of the outer catch so as to disengage this from its notch. The catch
then slides upon the outer periphery of the cylinder until it drops into the next
notch, and this is made to take place at the moment when the cam releases the
inner catch so as to allow this to drop out of gear with the inner notch.
In order to insure the accurate action of the inner catch, there is combined with
the cam that works it a grooved ring, into which the pawl drops, when let go of by
the cam, thus accurately limiting the extent of its motion and also preventing any
lateral shifting thereof.
It will be understood that there are as many outer and inner notches or holes
on the cylinder as there are numerals or other marks on its periphery, so that at
each movement of the cylinder as above described a fresh numeral is made to appear
before the opening in the casing.
The outer catches have studs attached to them by which they can be raised out of
gear with the cylinder so as to allow this to be set to zero.
The first cylinder of the counter is actuated in the usual manner by a suitable
step-by-step movement, worked either mechanically or by an electric current, in any
convenient manner.
Dated this 22nd day of November 1889.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements Counters or Registering Mechanism.
•
I, ROBERT JEWELL of 9 Victoria Road, Battersea Park, Surrey, Gentlemam 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:
According to my invention I construct a counter or registering mechanism wherein
a series of cylinders or hollow discs having numerals &c. marked on their peripheries

page_text: 1
are mounted side by side on a fixed spindle each disc being held by an external catch
which is released on the completion of a revolution of the previous disc by a cam on
the latter, while at the same time a spring pawl carried by such previous disc is acted
upon by a cam on the fixed spindle so as to take into a notch in the next disc and
turn this through one division.
The construction of the counter or registering mechanism will be readily understood
on.reference to the accompanying drawings, in which Fig. 1 shews a side view of the
counter Fig. 2 a cross section and Fig. 3 a part longitudinal section.
AAA &c. are hollow discs having numerals &c. on their periphery each turning
loose on the fixed spindle B, and having notches a a at distances apart on their
periphery corresponding to the number of numerals marked thereon, the first disc A¹
being however without such notches.
Into the said notches take spring catches C2 C3 C4 &c. pivotted to the framing D,
so as to hold the discs in whatever position they are moved into, and on the outer
surface of the discs are small cams E¹ E³ E³ &c. so arranged that when, say, the
disc A' has completed one revolution in the direction of the arrow, its cam El acts
upon the catch C² that holds the disc A³, so as to raise it out of the notch of the
latter and consequently leave it free to turn.
Each disc AA &c. has an inner ring F2 &c. with holes ff&c. corresponding in
number and position to the notches a a and on the side of the preceding disc is pivotted
a spring pawl-or hooked catch G¹ &c. which, on the completion of a revolution of its
disc, is raised up by a cam H' &c. fixed on the spindle B so as to take into the hole f
of the next disc, so that on the first disc A' commencing its next revolution, it carries
the second disc A with it (the catch (2 having been raised out of the latter) as long
as the catch G¹ is kept raised by the cam H'. This is made of such a form as to
keep the catch raised the exact duration of time required for moving the disc A*
through one division, whereupon, the catch being pushed down again by its spring
the disc A² will remain stationary. At the same time, the cam E¹ having previously
released the catch C2 so that the nose of this slides on the periphery of A² as this
turns, the catch will drop into the next notch a of A' which is presented beneath it
at the moment when A ceases to be turned by A¹, so that A² will now be held
-securely in position until, on the completion of a second revolution of A¹, the above
operation is repeated. In like manner when A² has completed a revolution its
cam E' will raise the catch C³ holding disc A³, and its catch G2 being acted upon by
its fixed cam H2, will effect the turning of A³ one division and so on.
To insure the correct action of the catches G¹, &c. the cams H' &c. are situated in
circular grooves in discs I' &c. fixed to the spindle B, so that the heads of the
catches G &c. slide in the said grooves as they revolve with the discs A' A³ &c.
The catches C3 C3 &c. have studs c attached to them, by which they can be raised
up by hand so as to leave the discs free to be turned into zero position when
required.
The first disc A¹ may receive a step by step motion by any suitable mechanism
for moving it consecutively through its several divisions, such as by a pawl and
ratchet gear as indicated actuated either electrically or mechanically in any known
manner.
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. A counter or registering mechanism wherein each disc on completion of a
revolution effects the movement of the next disc through one division, by means of
a catch carried by the first named disc actuated by a fixed cam so as to take
into a hole notch or tooth on the second disc while at the same time a stationary
catch, which takes into notches or holes in the second disc so as to hold it in
position, is raised out of gear by a cam or stud on the first disc so as to allow
of the second disc being moved as described, substantially as herein set forth.
..:
2. In counters or registering mechanism the combination of the discs A¹ A³ &c.,

page_text: catches C³ ³ &c. taking into notches on the discs cams E¹ E² &c. acting on such
catches, so as to release them from the notches, and catches G¹ &c. carried by the
discs and acted upon by fixed cams H¹ &c. so as to take into holes or notches on the
next following disc and carry the same round one division substantially as described
with reference to the accompanying drawings.
Dated this 91st dow of August 1890
ABEL & IMRAY,
Agents for the Applicant.