IMPROVEMENTS IN AND APPERTAINING TO COUNTERS, INDEXES, AND REGISTERING APPARATUS FOR RECORDING. THỊ PROVISIONAL SPECIFICATION RECING THE REVOLUTIONS OF SHAFTS, APPLICABLE ALSO FOR OTHER PURPOSES
Year: 1880

page_text: LETTERS PATENT to William Chadburn, of Liverpool, in the County of
Lancaster, Optician, for an Invention of "IMPROVEMENTS IN AND APPERTAINING
TO COUNTERS, INDEXES, AND REGISTERING APPARATUS FOR RECORDING. THỊ
PROVISIONAL SPECIFICATION left by the said William Chadburn at the
Office of the Commissioners of Patents on the 26th May 1880.
WILLIAM CHADBURN, of Liverpool, in the County of Lancaster, Optician.
"IMPROVEMENTS IN AND APPERTAINING TO COUNTERS, INDEXES, AND REGISTERING
APPARATUS FOR RECORDING THE REVOLUTIONS OF SHAFTS, APPLICABLE ALSO FOR
OTHER PURPOSES."
My Invention relates to certain improvements in counters, indexes, or registering
apparatus where such counters are composed of a series of rotating discs marked
with numerals or letters on their peripheries, such discs representing units, tens,
hundreds, thousands, and so on, according to the number of discs used. The unit
disc is rotated by the reciprocating movement of a lever, which works a com-
bination of two pawls, one being a movement pawl and the other a locking pawl,
having a mechanical action of similar nature to that described in former Letters
Patent granted to me, No. 739, A.D. 1877, and illustrated more particularly at
Figures 10 and 14. In my former Letters Patent, No. 739, A.D. 1877, the pawls
were repeated for each disc, and in practice I found that by wear the mechanism
lost its accuracy, and further, the apparatus was expensive to manufacture. My
present Invention consists in simplifying the mechanism by reducing the parts, and
at the same time producing a simpler apparatus having the same advantages as my
former Invention without the liability to get out of order.
In constructing an apparatus according to my present Invention I use a series
of discs, the peripheries of which are marked with numerals, letters, or other
devices. The discs represent units, tens, hundreds, thousands, or an increasing
scale, so that the total may be read as from a dial. The discs are mounted loosely

page_text: side by side on a shaft. The first or unit disc has attached to it two wheels, the
nearest being a locking wheel and the outside a ratchet or movement wheel. The
ratchet or movement wheel is worked by a pawl carried on a pin on the end of a
lever, which is mounted on a hollow shaft covering the disc shaft. This movement
pawl is held up to its work by a spiral or other suitable spring, and the hollow
shaft and lever and thereby the pawl are actuated by a spring or other lover
receiving motion from the moving part of the engine or other mechanism, the
action of which has to be registered. The locking wheel is provided with notches
or grooves, into which take a locking pawl held up to its work by a suitable
spring. This locking pawl is arranged to be worked or released by the action of
the movement pawl before spoken of, namely, as the movement pawl goes up to its
work, and before it bears on the tooth of the ratchet wheel it has to move, it lifts
the locking pawl out of gear by a lozenge projection or its equivalent, so that the
movement of the ratchet wheel and thereby the disc can be accomplished. At the
end of the movement the locking pawl again falls into gear and locks the
mechanism. The second, third, and following discs are actuated by the movement
of the preceding disc as follows:-For example, the primary movement and
locking wheels being on the right hand of the unit disc, on the left hand of the
unit disc and each of the succeeding discs there is a disc projection having a notch
and a movement pin slightly above the notch, and on the right hand of each
succeeding disc after the unit disc there is a toothed wheel. Above the discs there
is a secondary shaft, upon which are mounted loosely wheels arranged in pairs, one
pair between each of the discs. These wheels are constructed thus:-The right
hand one is formed with teeth, the edges of which are struck with a radius from
the center of the numeral disc, and with recesses or grooves into which takes the
pin spoken of on the numeral disc, say the unit disc. The other wheel is an
ordinary toothed wheel which works into the toothed wheel on the right hand of
the tens disc. By this means once in every revolution of the unit wheel its pro-
jecting pin moves its wheels on the secondary shaft, and thereby moves the tens
disc, and likewise once in every revolution of the tens disc the hundreds disc is
moved, and so on. The formation of the first or movement wheel of the pairs on
the secondary shaft locks each disc in succession until its projecting or movement
pin shall have come round. The main shaft and the secondary shaft are rather
longer than the space occupied by the numeral discs, and a hinged stop is provided
at the end to keep the discs in their place. By removing the stop the numeral
discs can all be thrown out of gear for adjustment; for example, so that the index
may exhibit zero.
The mechanism is mounted in bearings on a flat bed, and is surrounded by a
semi cylindrical cover hinged to the bed on one side and locked to the bed on the
other. The index is exhibited through windows or a window cut in the periphery
of the semi cylindrical cover, which cover forms one of the features of my
Invention.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Chadburn in the Great Seal Patent Office on the 26th
November 1880.
WILLIAM CHADBURN, of Liverpool, in the County of Lancaster. "IMPROVEMENTS
IN AND APPERTAINING TO COUNTERS, INDEXES, AND REGISTERING APPARATUS
FOR RECORDING THE REVOLUTIONS OF SHAFTS, APPLICABLE ALSO FOR OTHER
PURPOSES."
My Invention relates to certain improvements in counters, indexes, or registering
apparatus where such counters are composed of a series of rotating discs marked
with numerals or letters on their peripheries, such discs representing units, tens,
hundreds, thousands, and so on, according to the number of discs used. The unit
disc is rotated by the reciprocating movement of a lever, which works a com-
bination of two pawls, one being a movement pawl and the other a locking pawl,
having a mechanical action of similar nature to that described in former Letters
Patent granted to me, No. 739, A.D. 1877, and illustrated more particularly at
Figures 10 and 14. In my former Letters Patent, No. 739, A.D. 1877, the pawls
were repeated for each disc, and in practice I found that by wear the mechanism
lost its accuracy, and further, the apparatus was expensive to manufacture. My
present Invention consists in simplifying the mechanism by reducing the parts, and
at the same time producing a simpler apparatus having the same advantages as my
former Invention without the liability to get out of order. The following is a full,
clear, and exact description of my present Invention, reference being had to the
accompanying Sheet of Drawings making a part of this Specification, and to the
letters and figures of reference marked thereon, which correspond with those in
the following explanation, like letters and figures being used to denote the same or
corresponding parts throughout the various views.
Upon reference to the Drawings,--
Figure 1 is a front elevation of a counter or registering apparatus constructed
according to my Invention.
Figure 2 is an end view of Figure 1.
Figure 3 is a side elevation of a counter according to my Invention with cover
removed.
Figure 4 is a plan of Figure 3.
Figure 5 is a section at X, Figure 3, showing locking and actuating wheels.
Figure 6 is a section at Y, Figure 4, showing intermediate movement wheel.
Figure 7 is a section of one of the index dials.
It will be seen that in constructing an apparatus according to my present
Invention I use a series of discs A1, A2, A3, A4, A5, A6, A7, the peripheries of which
are marked with numerals, letters, or other devices. These discs, commencing
at A', represent units, tens, hundreds, thousands, tens of thousands, hundreds of
thousands, millions, so that the total may be read as from a dial, in manner shown
at Figure 1. The discs A¹ to A7 are mounted loosely side by side on the shaft B.
The first disc A¹ has attached to it two wheels (see Figures 3, 4, and 5), the
wheel C being a locking wheel and the wheel D a ratchet or movement wheel.
The wheel D is worked by the pawl F carried on a pin g on the end of the
lever H, which has action between the stops I. The lever is mounted on a hollow
sbaft K covering the disc shaft B, as shown, and which works loosely thereon.
The movement pawl F is held up to its work by a spiral or other suitable spring E.
The shaft K and the lever H and thereby the pawl F are actuated by a spring
retained or other lever J, which receives motion from some moving part of the
engine or other mechanism the action of which has to be registered. The locking
wheel C is provided with notches or grooves a, into which takes the locking pawl L,
which is held up to its work by a suitable spring L'. This locking pawl Lis

page_text: arranged to be worked or released from the notches a by the action of the move-
ment pawl F before spoken of, namely, as the movement pawl F goes up to its
work, and before it bears on the tooth of the ratchet wheel which it has to move,
it lifts the locking pawl L out of gear by a lozenge projection b formed on the
pawl F, which works against a corresponding projection e on the pawl L, so that
the movement of the ratchet wheel D and thereby the unit 'disc A' can be
accomplished. At the end of the movement the locking pawl L again falls into
gear with the notch a on the wheel C and locks the mechanism. The second,
third, and following discs, being the discs A² up to A7, are actuated by the move-
ment of the preceeding disc as follows:-For example, the primary movement
wheel D and locking wheel C being on the right hand of the unit disc, on the loft
hand of the said unit disc A¹ and on each of the succeeding discs there is a disc
projection N having a nitch g and a movement pin h slightly above the nitch, and
on the right hand of the disc A² and the following discs there is a toothed wheel M.
Above the discs there is a secondary shaft P, upon which are mounted loosely
wheels arrranged in pairs, one pair between each disc (see Figure 4). These
wheels are constructed thus:-The right hand wheel R of each pair is formed with
teeth, the edges of which are struck with a radius from the centre of the numeral
disc, and with recesses or grooves i, into which takes the pin on the numeral
disc, as shown at Figure 6. The other wheel S is an ordinary toothed wheel,
which works into the toothed wheel M in each series. By this arrangement once
in every revolution of the unit wheel A¹ its projecting pin g moves one set of
wheels R, S, on the secondary shaft P, and thereby moves the tens disc A³, and
likewise once in every revolution of the tens dise the hundreds disc is moved by
its set of wheels R, S, and so on throughout the series. The formation of the first
or movement wheel R of the pairs R, S, upon the secondary shaft P locks each
disc in succession until its projecting or movement pin h shall have come round to
the position as shown in Figure 6, when the pin enters the nitch on the wheel R,
and from the formation of the nitch g in the rim N the wheels R and S are
allowed to be rotated, and thereby move the next disc in succession one numeral
of advance. The main shaft B and the secondary shaft P are rather longer than
the space occupied by the numeral discs, and a hinged stop U is provided and
hinged to the secondary shaft P and drops over the shaft B, thereby keeping the
numeral discs in their place. By removing the stop U from the shaft B the
numeral discs can be thrown out of gear with the wheels R, S, for adjustment,
for example, so that the index or dial, as at Figure 1, may exhibit zero. The
mechanisin is mounted in bearings V, V, on a flat bed W, and is surrounded by a
semi circular cover W₁, which is hinged to the bed or back W on one side and
locked to the bed or back on the other. The index is exhibited through a window
or windows cut in the periphery of the semi cylindrical cover, as shown at Figure 1,
which cover forms one of the features of my Invention.
•
The spring lever arrangement for working the apparatus consists of the lever J,
which is loosely mounted on the shaft K, as shown, and is provided with teeth or
projections m, which gear into corresponding teeth or projections on the sliding
washer or sleeve n, which has travel on the shaft K to the extent of the slot t, and
is fixed to and moves the shaft K by the pin r, as will be understood upon
reference to Figure 3. The sleeve or washer n is kept up to the teeth m of the
levor J by the spring s, which is sufficiently strong to enable the lever J to work
the apparatus under ordinary circumstances, but if anything occurs to arrest the
motion of the discs the spring s gives and the lever J works without moving the
mechanisni.
Having now described and ascertained the nature of my Invention and explained
how the same may be put into practical operation, I would state that I disclaim all
matter contained in my former Patent, No. 739, A.D. 1877, but what I claim as
secured to me by Letters Patent for this my present Invention is,-
Firstly. The construction and arrangement of counter and registering apparatus,
as herein described and such as shown in the Drawings hereto annexed.

page_text: Secondly. In counters or registering apparatus of the type herein described the
peculiar construction of the movement lever H in connection with the movement
pawl F and locking pawl L, substantially as herein described and shown in the
Drawings hereto annexed.
Thirdly. Effecting the movement and locking of the numeral discs succeeding
the unit disc in counters of the type described by means of the series of wheels R, S,
carried on the secondary shaft P, substantially as herein described and shown in
the Drawings hereto annexed.
Fourthly. In counters of the type herein described the construction of the
numeral discs with the disc projection N and the toothed wheel M working in
conjunction with the wheels R, S, substantially as herein described and shown in
the Drawings hereto annexed.
Fifthly. The construction and arrangement of spring lever for effecting the
working of counters, substantially as herein described and shown in the Drawings
hereto annexed.
Sixthly. Constructing counters of the type herein described with semi cylindrical
covers, substantially as herein set forth and shown in the Drawings hereto
annexed.
In witness whereof, I, the said William Chadburn, have hereunto set my hand
and seal, this Twenty fourth day of November, in the year of our Lord One
thousand eight hundred and eighty.
WILLIAM (L.S.) CHADBURN.