Improvements in Combined Arithmometers and Printing Machines.
Year: 1896

page_text: Date of Application, 18th Feb., 1896-Accepted, 4th July, 1896
COMPLETE SPECIFICATION.
Improvements in Combined Arithmometers and Printing
Machines.
I, GEORGE WILSON DUDLEY of Charleston in the County of Kanawha and
State of West Virginia, United States of America, Civil Engineer, 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 object of my invention is to quickly and accurately add a column or columns
of figures and at the same time and by the same manipulation of the keys to print
upon a sheet of paper those figures in the order in which they are added su as to
form a proof sheet which shall verify the correctness of the addition and which
machine by special adjustments may be made to print at the bottom of the column
the sum total of the column and to do this work in a vertically descending
progression or vertically ascending progression or in a horizontal progression.
The leading features of my invention I designate generally as follows:-First,
an improved mechanism for causing the keys representing the different digits to
impart a variable throw to the adding wheels and type carrier; second, a means
for dispensing with the strain on the machine of turning at one time a number of
the adding wheels which becomes necessary in carrying from one denomination to
the next, for which purpose I provide a set of supplementary receiving wheels to
which the numbers to be carried are delivered in a cumulative way, until the
addition is completed on the main wheels, after which these accumulated numbers
on the supplementary receiving wheels are added into the total by a subsequent
adding operation.
Third, a novel organization of devices for spacing, adding, and printing; or
spacing without printing; and printing without adding.
In connection with these general features of improvement, other improvements of
a minor character are also provided which may be best understood hereafter by
reference to the accompanying drawings, in which
Figure 1 is a plan view of the machine with the enclosing case removed.
Figure 2 is an inverted plan view of the machine.
Figure 3 is a front elevation of the machine with some parts broken away and
others shown in section.
Figure 4 is a vertical section taken on line 4-4 of Figures 1 and 2 looking in
the direction of the arrow on said line.
Figure 5 is a vertical section taken on line 5-5 of Figures 1 and 2 looking in
the direction of the arrow on said line.
Figure 5 is a sectional detail taken through line 5 5 of Figure 3.
Figure 6 is a vertical section of the escapement mechanism taken on line 6-6 of
Figure 2 and looking in the direction of the arrow on this line.
Figure 64 is a section through the escapement mechanism taken on line 6-6ª of
Figure 6, and looking in the direction of the arrow on this line.
Figure 6B is a detail in perspective of the top of the barrel K'.
Figure 7 is a vertical section of the escapement mechanism taken on the line 7-7
of Figure 2 and looking in the direction of the arrow on this line.
Figure 8 is a vertical section through the adding wheels taken on line 8-8 of,
Figures 3 and 84, looking in the direction of the arrow on said line.
Figure 8 is a sectional edge view of the adding wheels seen in Figure 8 and
shown partly in section and partly in side elevation.

page_text: Figure 9 is a sectional-detail view of the means for locking the adding wheels
taken on line 9-9 Figure 1.
Figure 94 is rear view of the same looking in the direction of the arrow on
Figure 9, and
-
Figure 10 is a rear view of the machine.
I will first describe generally the external construction of the machine, and
designate the location and functions of the several parts visible on the outside of
the machine.
ZZZZ³, (Figures 1 and 3), are the four parts of the external case which for
convenience may be made in separate pieces. B, D and N are the operating keys.
Of these keys the first one D on the left bears a cipher and is not connected with
the adding mechanism, but only with the printing mechanism. The middle keya B
are nine in number and bear on their faces the numerals 1 to 9 and all have the
same action and connections, and all operate both upon the adding and printing
devices when depressed. The key N on the extreme right is the spacing key, and
has no connection with the adding wheels, but only co-operates with the paper
feeding mechanism, and has its own peculiar connections.
Fis a tilting thumb piece whose manipulation changes the direction of the feed
of the paper feeding devices from vertical to horizontal or vice versa.
E is a reversing lever for reversing the feed of the printing devices and shifting
backward or forward from one denomination of the adding wheels to another.
G is a pull rod which when in one position causes the adding wheels to move
forward to add, and when in another position causes the adding wheels to move
backward so as to subtract, and when in still another position throws out the
adding devices.altogether, aud-allows-the-printing-alone-to be effected.
I will first describe the action of the keys in determining the extent of movement
of the adding and printing mechanism.
Referring to Figure 5, it will be seen that the number keys B have horizontal
shanks or levers which are loosely hung upon an axial shaft B, and extend
through slots in the section Z of the outer casing.
On the inner ends of each of
these levers are formed two tappet arms b and b. Each tappet arm 6 of each
lever rests beneath and is arranged to lift a vertical stop pin 6. Each stop pin
slides through and is guided by a stationary horizontal plate band a deck plate 2*,
the pins being forced downwardly normally by spiral springs & surrounding the
pins, and bearing at their upper ends against the deck plate and at their lower ends
against a collar or flange on the pin.
B is a reciprocating gauge slide arranged horizontally on the deck Z just
behind the part Z' of the casing. This gauge slide is provided with a series of nine
longitudinal slots (see Figure 1), through which the stop pins 62 may be made to
protrude by the lifting action of the tappet arms b. This gauge slide serves, by
these slots, to give a different throw for each key to the adding devices and printing
devices, which throw is exactly commensurate with the size of the number
represented on the key. That is to say referring to Figure 1, the length of the
slot on the left is taken as the unit of throw, and co-operates with key 1. The
second slot is twice as long and co-operates with key 2. The third slot 6' is
three times as long as the first, and co-operates with key 3, and so on, throughout
the nine slots 6 and the nine keys.
When any one key therefore is depressed, as 2 for instance, its stop pin rises
in the second slot 6 of the reciprocating gauge bar B, and the latter may have a
longitudinal movement that is exactly commensurate with the number size of that
key, the pin stopping the sliding gauge bar B when the opposite end of slot b
reaches it.
The differential movement of the gauge bar is made the means of imparting a
differential movement to both the adding and printing devices as will be hereafter
described.
To explain how the gauge bar B" moves I would state that it is under the
direct influence of a spring motor. This motor is shown at M in Figure 2 and is

page_text: wound up through a bevel gear M³, shaft M², gear wheel M³, and pinion M*
bearing a squared shaft M' projecting through the case to receive a winding key.
On the main shaft of the motor is a rigid gear wheel M which meshes with and
transmits motion to a pinion M' which is fixed to the side of a gear wheel M³ which
latter gear wheel extends up through the deck Z of the machine and (see Figure 1)
engages with a pinion M rigidly fixed on a shaft M. This shaft M is the
medium for transmitting the power of the motor to the adding devices and the
extent of this transmitted motion is determined through the gauge bar B¹³ with
variable slots as follows.
On the front end of the shaft M is a rigid pinion M" (see Figure 3), which lies
in the plane of a double rack bar B. This rack bar is slotted throughout its
length and its ends slide vertically in the upturned ends B B of the gauge
slide B, but when moved longitudinally in a horizontal direction said rack bar
causes the gauge slide B" to move with it. When said rack bar is adjusted to its
lowest position, as shown in full lines, the top. section of the double rack bar
engages with the top of the pinion M" and when said rack bar is adjusted to its
upper position the bottom section of said rack bar engages with the bottom side of
said pinion. The pinion being strained in a given direction by the power of the
motor to which it is geared it will be seen that when the rack bar is down, it with
the gauge slide B is driven by the piuion in one direction, and when said rack bar
is up it is driven by the same pinion in the opposite direction, carrying the gauge
slide B1 with it.
To adjust this rack bar up and down at each operation of a key, two short cross
bars B B pass through the slot at opposite ends of the rack bar and are connected
at their opposite ends to the vertical bars B' B' which pass through the deck Z
and are connected at their lower ends by a cross bar B (see Figures 4, 5 and 54).
Spiral springs B encircle the arms B7 and by pressing upwardly against the
deck Z force them downwardly and bring down the cross bars B B and rack
bar B and cause its upper teeth B" to engage the top side of pinion M". To
cause the lower rack teeth B" to engage the bottom side of the said pinion M",
the arms B', are lifted by tappet arms B rigidly fixed on a rock shaft B₁ which
has curved armis B extending downwardly and connected at their lower ends by a
horizontal shaft B against which bear the tappet arms b' of each of the key
levers B.
The operation of these devices is as follows. Whenever a key B is depressed,
its downward movement causes its tappet arm b to lift its particular stop pin 6² up
through its particular slot 6 in the gauge slide B. At the same time the tappet
arm 6 of the said lever strikes against shaft 12 and through curved arina B³, rock
shafts B, and lift arms B, vertical bars B', and cross bars BB, causes the rack
bar B to be lifted, engaging its lower teeth B" with the pinion. The power of
the motor is now free to turn shaft M with pinion M" and propel the rack bar
and gauge bar to the left (of Figure 1) a distance equal to the length of the slot
through which the stop pin of the particular key protruded.
When the key is released and rises the springs B10 force down the vertical
bars B' and by bringing the rack bar down again re-engage its upper teeth with
the pinion, and the latter being still under a rotary strain in the same direction,
but being engaged by the rack bar, upon the opposite side, gives to the rack bar
and gauge slide B its return movement. Thus it will be seen that the stop
pins and slots of different lengths in the gauge slide, furnish means for causing
each key lever to differentially limit the extent of rotation of the shaft M" which
transmits the motive power to the adding mechanism. It must be understood,
however, that one half of this extent of movement in shaft M is permitted by the
forward movement of the gauge slide B and the other balf by the backward
movement of the gauge slide, and this enables me to make the slots only half as
long as they would otherwise require to be.
When the gauge slide B returns to its normal position of rest, its jar is
cushioned (see Figures 1 and 3). by a buffer consisting of a.cylinder Baliding in

page_text: a support B and having a cushion at one end. This cylinder has an internal
flange B which bears against a spiral spring B wound-about a stem B" having a
collar B. This stem has a rigid milled disk B by which it is rotated and its end
is screwthreaded and works through a stationary nut. B in the support B. By
turning the inilled disk B" the stem Be is advanced into the cylinder and the
cylinder (through the spring) is adjusted to stop the gauge slide B sooner or
later to properly adjust the stop pins 2 in the slots and the pinion M to the rack
teeth B.
I will now proceed to describe how the adding devices are constructed and
rotated with a different throw froni the motor, through the shaft M⁰ as controlled
by the keys B as before described.
The motor M (Figure 2), it will be remembered, transmits power through gear
wheels M M M to the pinion M' on shaft M, which latter is allowed a different
extent of revolution when each key is operated, corresponding in extent to the
number represented by that key. This shaft M10 (see Figures I and 4) transmits
motion to the crown wheel A of the adding devices either in a forward direction
to add, or in a backward direction to subtract, or may be disconnected wholly from
the adding devices, as when it is desired only to print. These adjustments are
effected through the pull rod G which has three notches g* g' gadapted to engage
a tooth go on the main frame to determine the positions of its adjustments. The
pull rod G slides in guides g and carries an arm g' acting upon a sleeve A³ to slide
it back and forth on the shaft M10. This sleeve slides longitudinally on said shaft
but rotates with it through a piu g on the shaft playing in a slot. in the sleeve, and
said sleeve bears at one end a rigid pinion A and at the other a rigid pinion A¹,
one or the other of which may be engaged with the teeth of the crown wheel A or
both be disconnected according to the adjustment of the sleeve as effected through
the pull rod G. Thus when the pull rod is forced all the way in, the pinion A'
engages the crown wheel A' and turns the adding wheels in one direction, and
when the pull rod is drawn out so that its middle notch gl engages the tooth the
pinion A engages the crown wheel A, and turns the adding wheels in the opposite
direction, and when the pull rod is drawn all the way out (as indicated in dotted
lines in Figure 4) both the pinions A. and A' are out of engagement with the
crown wheel A3 and the operation of the keys has no influence on the adding
devices, but only works the printing mechanism as hereafter described.
When the adding devices are thus disconnected from the operating devices said
adding devices are locked against accidental displacement as follows:
The crown wheel. A is rigidly connected to a spur wheel A placed against its
side (see Figures 1, 4, 9 and 94) and the spur wheel A transmits the adding (or
subtracting) motion to a pinion A' on the shaft A' of the denomination wheels
hereafter described.
On the pull rod G (see Figure 4) is a pin 9' which engages a slot in an arm gⓇ
rigid on a short rock shaft g (see Figures 9 and 94). This rock shaft has upon
its opposite end a hook shaped detent 98 which when the pull rod is drawn out and
adding devices disconnected, passes into engagement with the teeth of the spur
wheel A' as shown in dotted lines in Figure 9, and locks the adding devices against
displacement.
I will now proceed to describe the adding devices referring more particularly to
Figures 1, 3, 4, 8 and 8^.
The entire operation of these devices is effected through the rotation of the
shaft A, one portion of which is shown in Figure 94 with the gears connecting it
to the motor, and another portion of which is shown in Figure 84 in its relation to
the adding wheels. This latter combination I will now describe.
It consists (see Figures 8 and 84) of a hollow longitudinally slotted shaft A' in
which slides a rud A bearing a bit or tooth a¹ which engages the teeth of an
internal gear a rigidly connected to each one of the denomination wheels A'.
These wheels are arranged in the order of units, tens, hundreds, &c. and have two
series of numbers on their faces, each series running from 1 to 10, and each wheel

page_text: "carries" at each half revolution. These denomination wheels A' are all loose on
the hollow shaft A' except when individually coupled thereto for rigid revolution
therewith which is effected through the slide rod A" and bit a. Thus when
slide rod A" is adjusted to cause its bit a to lie in the plane of and lock into the
internal gear teeth a of any denomination wheel, that denomination wheel is rigidly
locked to the shaft A for rigid revolution thereby because the bit a' passes
through the slot in shaft Aand locks it to the said internal gear of that
denomination wheel.
t
When one denomination wheel acts upon the next denomination wheel in
carrying "tens" in accordance with the decimal system, there are times when the
motor has to move a number of these large denomination wheels at once which
involves a tax on the motive power that is liable to lead to imperfect and inaccurate
work. I provide a means for overcoming this by dispensing with the carrying
from one denomination wheel to the next, but carry from each denomination whee!
to a corresponding supplementary receiving wheel which receiving wheels store up
the carried numbers and when the addition is completed these stored up carried
numbers are added in to the denomination wheels as a separate and subsequent
operation. By this arrangement each denomination wheel is only required, in
carrying, to turn its own receiving wheels.
Referring to Figures 8 and 84, A and A" are two shafts arranged above and
parallel to the shaft A of the denomination wheels. These shafts bear two series
of wheels A and A" arranged side by side. They bear on their faces numbers 0
to 9 and have a flange a with a corresponding number of notches, which notched
flange lies in the plane of a diametrical bar A rigidly attached to the hub of each
denomination wheel A'. At each half revolution of a denomination wheel A' this
diametrical bar A strikes a notch of the flange a' of the receiving wheel A', and
carries one to this receiving wheel causing it to move one notch. At cach
complete revolution of a wheel A'a lug a' on its side, see Figure 8, strikes the
notched flange of a companion wheel A10 above and turns it one notch so that when
the carried numbers exceed ten they will be accumulated and recorded on the
wheels A of higher denomination above. The numbers of these two series of
wheels A and A appear through openings ad and a in the case, as in Figure 3,
while the numbers of the main denomination wheels A' appear through lower
openings all.
To hold these receiving wheels to the positions to which they are turned they
have notched peripheries, and spring detents as a drop into the notches to
determine and fix the limit of their inovements.
After an addition has been performed and the numbers carried by the supple-
mentary receiving wheels A and A10 have been added in, these wheels require to
be set back to zero, and for this purpose their shafts A and A" carry pins a³
(see Figure 8), which ordinarily lie within recesses on the left side of the
wheels A and A. These wheels have also on their opposite sides pins a* and
when the shafts A" and A18 are pulled longitudinally to the left, as shown by
dotted lines, their pins a pass into range of engagement with the pins a' of the
wheels, and by then rotating the shafts A and A¹ the wheels A and A may
be restored to zero. These fentures however are not new and I make no claim to
the same.
Referring now to Figures 1, 8 and 84, whenever the bar A" is adjusted to bring
its bit a¹ into locking engagement with a denomination wheel A', an index plate a
(Figure 1) is made to simultaneously appear through a hole al (Figure 3), in the
case to show in what denomination the adding is being done. This index plate is
on a rod A18 (see Figure 94) just above the bar A" and connected to and operated
simultaneously with it by a post A" (Figures 94 and 1). This post is attached to
and moved by a rack bar A", beneath the deck of the machine (as shown in
Figures 8, 94 and 2). This rack bar is also provided on its end with a double
inclined cam A which acts upon an elbow lever A" (Figure 8) fulcrumed on a
horizontal shaft A" and deflects it, as shown in dotted lines, to cause its other end

page_text: ito become disengaged from the notches n in the side of the denomination wheels,
Iso that the denomination wheel upon which the addition is being performed is free
to be turned,.while all the other denomination wheels are locked by their elbow
lever detents A".
The rack bar A" simultaneously moves rod A18 carrying the index plate A", wheel
locking bar A", and detent releasing cam A, while the rack bar itself (sce
Figure 2) meshes with and is moved by a pinion P, clutch P, shaft C and
reversible geare C1 C2 C20 on shaft C receiving motion through gears C” C
from a motor C2 as will be more fully described further along.
In performing an addition of columns of figures, if a series of figures in a column
aggregates less than one hundred the numbers to be carried will only turn the
lower series of receiving wheels A', but if the figures in a column to be added
aggregates one hundred or more then the denomination wheel A' will turn its
receiving wheel A to record the carried teus and will also turn the receiving
wheel A (through lug a', Figure 8) to record the carried hundred or hundreds, so
that in no case will any denomination wheel be required to move more than two
-other wheels and generally where the column footed up is less than 100 it will only
need to turn one of the wheels A°.
After the addition of the columns is complete, then the figures showing through
openings a (Figure 3) are added into the denomination wheels A' by a manipula-
tion of the keys and so also with the numbers showing through the openings a,
sprovided there be any showing. The numbers showing through these openings
represent the carried numbers and are added each into its corresponding
-denomination wheel below, to indicate the grand total at the openings all.
I have already described how the movement of each key controls: the-throw of
the adding wheels through the gauge bar B13, the stop pins 6 and slots 6 of varying
length. (as shown in Figures 1 and 5). These same devices control the throw of
the printing type levers and their carrier, which I will now proceed to describe
referring more especially to Figures 1 and 5.
T are the type levers which are shaped like the letter Z with a printing type t
at the upper end, and an impact arm at its lower end. These levers are
fulcrumed upon a curved bar on the outer end of a segmental type carrier T¹.
This carrier has a rest bar t against which all the type levers are supported and
against which they fall back after having delivered a printing blow. The segmental
type carrier T¹ is formed on the upper end of a hollow sleeve T (Figure 5) turning
upon a vertical post T mounted upon the deck Z. The lower end of this sleeve
is provided with a rigid arm T having a toothed segment t that is engaged by a
-corresponding toothed segment on an offsetting plate T rigidly fixed to the
reciprocating gauge bar B. So that when this gauge bar, under the influence of
-the motor M and controlled by the keys, reciprocates, its segmental plate To acting
through the segmental gear t t on arm T gives to the type lever carrier T¹ a
throw that is exactly commensurate with the movement of the gauge bar as
-controlled by the slots 6 and this throw of the type carrier T¹ in a horizontal
plane brings the proper one of the type levers to the printing position. For
instance, if key number 5 be depressed, it not only moves the adding wheels five
notches, but it also swings the type carrier T¹ to a position that brings the
type lever T bearing figure 5 to the printing position. When so brought to
position an impact bar M, (see Figures 4 and 5) suddenly rises and striking the
arm of that type lever, throws it forward against the type ribbon R" to print
(as shown in dotted lines in Figure 5).
T
This impact bar slides in a trunnioned guide m and is lifted by a stem m³ which
.has a screw threaded connection with the impact bar to give the latter a vertical
adjustment. This stem m³ is connected to a crank of on a rock shaft M" which
rock shaft has another crank M connected (see Figure 2) to reciprocating
bar which (see Figure 6) is operated upon by an escapement mechanism
.hereafter described.
Jel will now proceed to describe how the keys operate upon the printing mechanism

page_text: to do the printing and effect the feeding or spacing. This is accomplished through
the agency of the spring motor C" (see Figure 2), whose power is controlled and
expended intermittently through the escapement mechanism referred to and is
transmitted through the reciprocating rod M" to the impact bar M" (Figure 5).
and also through the rotary shaft C to the paper feeding devices, which will be '
hereafter described.
I will first describe the escapement mechanism referring more especially to
Figures 2, 6 and 7.
Referring first to Figure 2, the shaft of motor C2 is provided with a rigid gear
wheel C which turns pinion C" rigid on the shaft C. This pinion is rigidly
formed with a disc N4, (Figure 64) which has a sleeve on its side (opposite the
pinion) bearing a single ratchet tooth m', (Figures 7 and 6^). This ratchet tooth
engages a pawl lever m fulcrumed on a loose disk N2, the end of said pawl lever
lying across a notch do in the periphery of disk N, which turns loosely on
shaft C except when pawl m engages ratchet m', at which time the disk N³ is.
geared rigidly to shaft C through the rigid disk N and pinion C
On the side of the disk N' there is formed a pinion N (Figures 6 and 64) which.
engages with a gear wheel N rigid on a counter shaft N. Beside this gear
wheel is a hollow casing N' containing a coil spring No, the inner end of which is..
connected to the shaft N18 and the other end of which is connected to the hollow
casing N'. This hollow casing has on its outer periphery a series of separated or
spaced teeth n which catch against a lug n' on the end of the horizontal reciprocating-
rod M³ and move it to the right. This is the same rod which operates the impact
bar M, (Figure 5), as described before and when this bar is drawn to the right.
of Figure 6 by a tooth n, a link n', pivoted to the bottom of the deck Z* and
also to rod M, lifts the lug n at the end of the movement off of the tooth n, and
a spring 10 (Figure 2) rocks shaft M3 and draws the rod M" to. the left of Figure 6-
again..
The hollow casing N' moves intermittently a space equal to the distance between.
the teeth n, and its actuating power is that of the motor C (Figure 2) whose
energy is stored up in the coil spring N° and intermittently allowed to assert itself
on the rod M by an escapement set into action by the keys as follows.
B (Figure 6) is one of the key levers which when depressed strikes a depressible.
yoke frame composed of horizontal bars B and arms B rigidly fixed to the rock
shaft R which also has attached to it two pallet arms N N also rigidly attached
to said rock shaft R and depressible frame B2 B30. These pallet arms have-
engaging spurs n' n and when the pallet arms move downwardly the upper one n**
engages a tooth n and the lower one n³ passes out of engagement of said teeth, and
vice versa to constitute an intermittent escapement for the hollow casing N'.
There is also rigidly attached to the rock shaft R another escapement consisting
of a rigid arm M which has two lugs m' m³ adapted to stop alternately against-
two pins mom on the side of the disk N. That is to say normally pin m rests..
against lug me but when arm M inoves outwardly in obedience to the depression
of a key B, lug m is taken away from pin m and the latter passes between.
the lugs, while lug m' is brought into range of pin mo aud still holds the disk,
but when arm M moves inwardly again, pin mo passes also between the lugs and
the disk N' being then unrestrained turns a complete revolution, rotating (through
its pinion N') the gear wheel N and winding up the rigidly attached shaft N.
and coil spring No.
i
It will therefore be seen that the effect of the depression of a key B is (see -
Figures 6 and 64) to release disk N and allow the power of the motor through:
pinion C to turn disk N and shaft C" one revolution and also to wind up-
through pinion N' and gear N° the spring N and also further through the-
double armed pallet N M to allow the stored up energy in spring N to be
expended to give an impulse on the rod M that operates the impact bar M" and.
causes it to lift and operate a printing type as heretofore described.
.

page_text: The above described action takes place whenever a key B is depressed to operate
both the printing and adding mechanism. It is sometimes necessary, however, to
space without adding or printing. To do this I provide a special spacing key N. This
does not act on the depression frame B B at all, but is held up by a spring D
(Figures 6 and 7) and when depressed acts upon a pin d" on a curved extension D
of the arm M". This arm M is articulated at d" (Figure 7) to the arm M" which
is rigid on shaft R and a spring d" (Figure 7) holds the two arms together as one
except when the space key N is depressed. When this occurs the toothed inner
end N of this space key enters the notch 0 in disk N' and, striking against pawl
lever m³ removes its end from the ratchet tooth m. At the same time the space
key N strikes the pin d and pulling back arm M about its centre allows the
following action to take place. First it unlocks disk N from disk N' by.
deflecting pawl m thereby leaving the train of mechanism N N N N
stationary, while the power of the motor acting on shaft C is intermittently
expended through escapement M", m², m³, m10, m" to turn shaft C alone, and
through the gears C C C (Figure 2) to turn shaft C" which spaces or feels
the paper of the printing mechanism which I will now proceed to describe.
This printing mechanism consists of a paper roll holder with means for feeding
both vertically and horizontally, and a printing ribbon, operating in conjunction
with the heretofore described oscillating type carrying and type operating device
arranged to cause the type to press the ribbon against the roll of paper.
The paper holder comprises an upper hollow roll C₁ (Figures 1, 3, 4, 5, 10)
provided with a coil spring c" (Figure 5) within it after the manner of a spring
roller for curtains. This hollow roll has a longitudinal slit (Figures 3 and 5)
in its periphery through which the end of the paper strip is inserted and in which
it is retained by a longitudinal pinch bar c (Figure 5) having an eccentric pro-
jection, which bar is journaled in bearings within the roll and has a rigidly
attached rocking arm c (Figures 3, 4, and 5) at the end outside the roll which
when rocked causes the pinch bar to act like a cam and tightly clamp the end of
the paper strip against the inner edge of the slot. This rocking arme also serves
to lock the roll holder so that its spring cannot exert any tension while inserting
the paper and for this purpose the head of the arm in the open position of the
pinch bar is made to enter a notch (Figure 4) in a rigid disk on the frame work
as shown in dotted lines. The spring roller C¹ holds the paper strip taut and
smooth and also supplies means for taking up the paper when fed in one direction.
The paper strip PA which is wound upon this roll passes (see Figure 5) down
in front of a rubber faced platen C and around a rubber faced roll C and thence
up and over a rubber faced roll C which two rubber faced rolls secure a frictional
bite on the paper for feeding it down against the tension of the roll holder, or
feeding it upwardly in response to this tension. The platen C constitutes the
back thrust bearing for the strip of paper against which the force of the blow of
the type (delivered through the ribbon and paper) is borne. The two rubber
faced rolls C C (Figures 5 and 10) are geared together by two gear wheels c³ c
so that they rotate together to feed the paper. All these rolls C C C and the
platen are mounted upon a carrying frame C.which slides horizontally upon two
guide rods C C7 fixed in the main frame of the machine. One of these rods C
passes through a tube c³ of the roll frame and the other C7 passes through the
centre of roll C. The roll C has also a rigid 'sleeve extension Cs (Figure 10) at
one end which carries a hand wheel C (Figures 1, 5, and 10) and a notched
disk C which latter by engagement with a spring detent c (Figure 10) mounted
on tube defines the extent of movement for the roller C in its intermittent
feed..
Rotary motion is imparted to the feed rolls by gear wheel C (Figure 10)
fixed rigidly on the rear roll C and engaging with the long pinion or fluted
roller arranged beneath the same. This pinion is made long as a fluted roller
so that the gear wheel C" may receive motion from the same always, and at the

page_text: same time be adjusted longitudinally in horizontal direction from time to time, as
the paper is fed laterally, as is necessary in a horizontal progression of figures, or
changing froin one denomination to the next.
To impart this horizontal longitudinal feed of the rolls a yoke C (Figures 5
aud 10) embraces the carrying frame aul is formed on its lower side with a series
of rack teeth which engage with a subjacent pinion c and is held to contact
therewith by an anti-friction roller e above. It will thus be seen that the fluted
roller forms the means for the transmission of the vertical or up and down feed
to the paper, while the toothed yoke furnishes means for the lateral or horizontal
feed.
The pinion has beside it and rigidly fixed on the same axis, a bevel gear
wheel (Figure 5) occupying a vertical plane, and the fluted roller C has also
at its end a rigidly attached beveled wheel (Figures 5 and 10) occupying a
vertical plane, but at right angles to the bevel wheel c. Between these two bevel
wheels there is a double bevel wheel cl (Figure 5) whose apper face is
adapted to engage with the bevel wheel co when the double bevel wheel is raised
as shown in Figure 5, and whose lower face is adapted to engage with the bevel
wheel as shown in dotted lines, when the double bevel wheel is lowered. This
double bevel gear occupies a horizontal plane and is fixed upon a sleeve c" which
is made adjustable on a vertical shaft cis and forms the means for imparting the
feed notion either to the vertically feeding devices through the upper bevel wheel,
and fluted roller, or to the lower bevel wheel and toothed yoke. For imparting
the vertical adjustment to the double bevel gear and its sleeve the latter is formed
with corrugations (Figure 5) which are engaged by a toothed segment "
formed on one arm of a rock shaft ce (Figure 10) and whose other arm ci extends
downwardly and is connected to the upturned end. of a slide rod C (Figures 2, 5,
and 10) moving in guides under the deck Z and connected at the front end to the
lower end of a thumb piece F (Figures 1, 2 and -5) which when tilted in one
position throws the slide rod.C back and when tilted to the other position throws
the slide rod forward and thus by raising or lowering the double bevel gear c" causes
the feed of the paper to be vertical or horizontal as may be desired. To define
the throw of the slide rod C" (see Figures 2 and 5) a spring 8 is provided with
a locking pine which is adapted to drop into notches in the slide rod at the end
of its movement in. either direction. and hold it firmly to place.
While the change of the direction of the feed devices is effected through the
thumb piece F and slide rod C+ the power for the actual feed is supplied through
another means. The sleeve of the double. bevel gear is connected to its shaft by a
pin and grooves (Figures 5 and 10) so that the sleeve turns with the, shaft,
although vertically adjustable on-it and this.shaft has at its lower end a bevel gear
wheel C (Figures. 2, 5, and 10).engaging with a bevel pinion C on a horizontal
countershaft Chung in bearings under the deck Z. The function of the
countershaft is, primarily to effect the feed of the paper, and this it does either up
or down or forward and backward according to the direction of movement of this
countershaft. For this purpose the countershaft has a large bevel wheel *C¹³
(Figure 2) on its end which is engaged alternately by one of two small bevel
pinions CC0 on opposite sides of the centre of .said large bevel wheel so as to
impart a reversed motion to the sanie.
The two bevel pinions C C are fast on a sleeve C" having corrugations c
with which engages. a toothed segment, arm on the lower end of a vertical rock
shaft (Figures 1, 2, and 5) whose upper end is provided with the reversing
lever E and which when turned in one direction throws bevel pinion C into
engagement with the large bevel wheel of the countershaft and when thrown in
the other direction throws the other bevél.pinion C into engagement with said
large bevel wheel to reverse, the motion of the countershaft. Motion is imparted
to the sleeve C from a central shaft C (Figure 2) which passes through the
escapement mechanism heretofore described and has a rigid pinion C" on its end
engaging with a gear wheel C: of a spring motor C :

page_text: We will now return to the countershaft C" and explain a further function
which it has in addition to transmitting the power to feed the paper (see Figures 2
and 5).
On this countershaft is the pinion P which imparts the throw to the rack
bar A, standard A" and the slide rods A" A18 of the adding devices which effect
the change from one denomination wheel to the next as heretofore described (see
Figure 9). This pinion P (Figure 2) is loose on the countershaft but is formed
with a clutch section P' that is adapted to be locked with clutch P3 on a sliding
sleeve P on the countershaft, which sleeve has a feather and groove connection
therewith. Said sleeve also has a set of corrugations a with which engages the
segment headed end of a lever A (Figure 2) fulcrumed upon a pendent vertical
pin and connected at its other end with a slide rod C so that when the slide rod
is moved longitudinally by its thumb piece F to give the horizontal feed to the
paper in changing from one denomination column to the next, the same movement
through the segment hended lever A sliding sleeve P³ and clutch causes the
pinion P on the countershaft to be locked to the countershaft and the latter then
by rotating the pinion P moves the rack bar A longitudinally and adjusts the
standard A (Figure 9A) with its slide bars. A8 A" horizontally to another
denomination wheel in the adding devices.
I will now describe the means for adjusting the typewriter ribbon.
To move the type writer ribbon (Figures 4 and 2) a thrust bar M is connected
at one end to the rocking frame B' 13 and is operated every time said frame is
rocked by a key. A spring pawl 7 (Figure 4) on the end of the thrust bar
engages a ratchet wheel R on a horizontal shaft R6 (Figure 2) journaled in.
hangers under the floor of the case. This shaft has a bevel wheel R at one end
and R at the other, and these engage respectively with other bevel wheels R R
on the lower ends of vertical shafts R R (Figure 10) which at their upper ends
carry spools or recls R." R" (Figure 1) that carry the type writer ribbon R one
spool paying off the ribbon and the other spool taking it up at each intermittent
movement of the subjacent shaft R as effected by the spring pawl and ratchet
wheel R through the thrust bar M2 and the rocking frame B B.
When the type levers are advanced to striking contact with the ribbon and
paper, the ribbon lies flat against the paper and close to it (as in Figure 5), but
when the type levers fall back again the ribbon is withdrawn laterally from the
paper (as in Figure 4) so that the operator can see the impression made, and
whereby also the feed of the ribbon is provented from smearing or blurring the
paper. This is effected (see Figures 1, 4 and 5) by carrying the ribbon through
two pairs of radial pins oo o o, on a rock shaft O extending horizontally in front
of the platen and parallel with the same. This rock shaft is journaled at its ends
in upright posts 01 01 (Figures 1 and 4) which have ribbon guides on their upper
ends and said rock shaft is worked by a rigid arm o' (Figure 5) a vertical connecting
rod o³ and a crank arm o' on the oscillating shaft M (Figures 5 and 2) of the
impact bar, so that after every printing impact the rod o³ is pulled down and the
ribbon rock shaft O is turned so as to throw the radial ribbon pins-o o o¹.ol away
from the platen, as in Figure 4, thus removing the ribbon from the paper by a
.lateral movement that leaves the impression in full view and also avoids smearing
the paper when the ribbon is fed along.
When it is necessary to reverse the feed of the ribbon, this is accomplished
(see Figure 1) by a flat reversing key O' which enters a slot of in either of the
spools R, and also a slot in the upper end of the spool shafts R" R. When
this key is inserted in these two registering slots it locks that spool to that shaft,
and when the feed of the ribbon is to be reversed this key is taken out of one
spool R(in which it now appears) leaving that loose on its shaft, and is
inserted in the other spool R-locking that rigidly on its.shaft, and thus reversing
the feed..
"
Itis necessary. at times to operate the adding mechanism without operating the
printing mechanism, as for instance when.the.carried numbers which are temporarily

page_text: stored up on the supplementary receiving wheels are to be added into the sun total,
and I will now describe how this is effected.
K, (Figures 1, 3 and 5) is a vertically adjustable key which when pulled up is
negative in effect, but when forced down locks the printing mechanism and allows
the adding alone to proceed from the operation of the keys B. This adjustable
sliding key (see Figures 5, 6, and 6^) has a stem K' that descends through an
upright barrel K mounted in the deck and at its lower end is jointed to a lever K
(Figure 7) fulcrumed at in a hanger H and having a forked end k projecting
laterally. Ordinarily the stem K is held up by a spiral spring K within the
barrel (Figure 6) which spring bears against a collar on the stem, but when
the stem is forced down against the tension of said spring pin: kl on the stem K¹
are caught beneath a stationary catch &(Figure 6), on the top of the barrel, and
said stem is so held depressed as long as may be desired. When so depressed
(see Figure 7) it forces down lever K and its forked end grasps and holds a
pin on the disk N2 and at the same time throws lever pawl me out of engagement
with tooth. This action makes disk N' loose on shaft C" and while locking it
against turning, permits shaft C under the influence of the moter to be turned to
operate the adding devices, the escapement Mm10 ml being operated to space in
the adding wheels by the working of the depression frame B3 B30 which latter
through its shaft R is rigidly connected with escapement arm M carrying
escapeinent M10 m". When this action takes place the depression of lever K
is made to hold the hollow disk N' so that the pallet detents do not lose their
position against the teeth n, and for this purpose a temporary restraining detent
is attached to lever K (see Figures 2, 6, 7,) and when the lever K descends this
detent engages one of the teeth n and forcing back slightly the disk N' allows
the pallet detents when rocked away from their hold on teeth n (by the rocking of
shaft R) to regain their hold on the same tooth.
It will be remembered that the adding wheels are rotated one half the way by
the advance of the gauge slide B, and the other half of the way by the return of
the gauge slide, and in spacing horizontally in adding it is obvious that the spacing
must not take place at any time during the advance or return movement of the
gauge slide. I make the spacing through the devices hereinbefore described to
take place just at the end of the return stroke of the gauge slide and provide means
for holding the spacing devices until said gauge slide has completed its return
stroke as follows.
When
Referring to Figures 1 and 7, L is a lever arranged horizontally on the deck Z
und fulcrumed at L. This lever has on one end a toe that is adapted to be struck
by the return movement of the gauge slide arm B and deflected as shown in
Figure 1. A spiral spring serves to pull the lever in the other direction.
this lever is occupying a position at right angles to the gauge slide, as it does when
the gauge slide is performing its stroke, a hook (see Figure 7) on the end of this
lever will lie in the plane of the escapement disk N and will catch against a pin 1
on the periphery of this disk and hold it against rotating. But when the gauge
slide 13 has completed its stroke, just before it stops, it strikes against the toe l'of
lever Land deflecting the latter, removes its hook from the plane of escapement
disk N and allows the spacing then to take place without interfering with the
other devices. Beside the lever L is arranged a spring detent which engages
with a notch on the disk N' aud prevents it from moving backward.
D (Figures and 4) is the cipher key. This is held up by a spring D and
has a projection D" which when the key is depressed strikes the bar B of the
depression frame and deflects the latter against the tension of its spring B. This
key does not affect the adding devices at all but only operates the impact bar M
of the printing devices against the first type lever T, which is a cipher and for
which the carrier T' does not need to be moved as this first (or cipher) type stands
Dormally in the printing position.
In performing additions it is desirable to have some means for locking the keys
at the end of an operation so that in case the operator is momentarily called away

page_text: there can be no possibility of any meddling person operating a key and thereby
falsifying the addition.
To provide against this disastrous contingency, I arrange a locking device which
locks all the keys whenever the index plate as (Figure 3) is carried back to the
zero point or place of beginning. This index plate it will be remembered is
connected through its rod A and post A (Figures 1 and 94) with the rack bar A"
(Figure 2) carrying the cam A which nets upon the denomination wheels A
This rack bar AI provide with a lug to (see Figures 2 and 5) which is adapted
to strike an arm won a rock shaft W journaled in bearings underneath the deck Z
parallel with the key levers. This shaft is turned in one direction by a spring w³
at its back end and at its front end has a radial arm W (Figure 5) that enters a
notch in a sliding locking bar W (Figure 3) which moves on guides 10 (Figure 2)
parallel with and immediately behind the front part of the machine. This locking
bar has in its upper edge (see Figure 3) slots which normally lie immediately
beneath the key levers, so that when the latter are depressed they can enter said
slots and make their complete stroke, but when the locking bar W is slid length-
wise, these slots pass out of coincidence with the key levers and lock the latter so
that they cannot be depressed. This sliding locking bar is actuated by the arin W
of the rock shaft W which is held in the normal position of use by the spring ³,
but when the rack bar A is moved back to the point of beginuing where its
cam A does not act upon any of the detents of the denomination wheels, then
lug wo (see Figures 2 and 5) acting upon arm cl of rock shaft W, turns the latter
against the tension of its spring and, through its arm Wat the front, slides the
locking bar W to its locking position where it remains until the cam A1 on the
rack bar is advanced to its co-operation with the units wheel of the series of
denomination wheels A' preparatory to adding again.
Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a key operated adding machine, the combination with the adding wheels.
and a motor for actuating them; of a set of key levers, a set of stop pins operated
upon by the key levers, a reciprocating gauge slide having slots of different lengths
corresponding to the size of the digits and adapted to be penetrated by the stop
pius and a gearing connecting this reciprocating gauge slide to the train of gears
between the motor and adding wheels to regulate the extent of movement of the
adding devices by each key substantially as and for the purpose described.
2. In a key operated adding machine, the combination with the adding wheels,
a motor for actuating them and a set of key levers; of a throw regulating device
consisting of a reciprocating gauge bar having a range of movement equal to one
half of the actual throw of the adding wheels and geared to permit movement of
the adding devices, both on the advance and return stroke of the gauge slide
substantially as and for the purpose described.
3. In a key operated adding machine the combination with the adding wheels, a
motor for actuating them and a set of key levers; of a throw regulating device
consisting of a reciprocating gauge bar having slots of varying length corre-
sponding to the size of the digits, a set of stop pins, adapted to be protruded
through said slots by the key levers said gauge slide being geared to the actuating
motor and arranged to allow it to expend its power in the same direction both on
the forward and backward movement of the gauge slide substantially as and for
the purpose described.
4. A throw regulating device for an adding or printing machine consisting of a
reciprocating slide with slots of varying length, stop pins corresponding to each of
said slots and adapted to penetrate the same, one at a time, to limit the throw of
said slide, and a set of key levers corresponding to and acting' upon 'the stop pins
to operate them substantially as shown and described.
5. The combination with the reciprocating gauge slide, having slots of different

page_text: length, stop pins penetrating said slots and key levers operating the pin; of means.
for reciprocating the gauge slide consisting of a horizontal double rack bar having
an up and down adjustment, a pinion arranged in said rack bar to engage
alternately with opposite sides thereof, and a shaft carrying said pinion and geared
to the motor substantially as and for the purpose described.
6. The combination of the reciprocating gauge slide having slots of different
lengths, stop pins penetrating said slots, a horizontal double rack bar having an up
and down movement in the gauge bar, a pinion arranged on the rack bar and.
geared to the motor, a rocking frame with lift arms and means for connecting
with the rack bar for giving its up and down movement, and key levers having
ench two tappet arms one engaging with the stop pins and the other with the
rucking frame and rack adjusting mechanism, substantially as and for the purpose
described.
7. The rack bar adjusting mechanisin consisting of the combination with the
key levers having tappet arin ; of the rocking frame B B 13 having lift
arms B, the yoke franie B B7 B8 with springs B connected to the rack bar
substantially as and for the purpose described.
8. In an adding or printing machine having a reciprocating gauge slide of
variable throw, the combination with the reciprocating gauge slide, of an adjustable
bumper adapted to limit the return stroke of the slide and adjust it in relation to
its co-operating parts substantially as shown and described.
9. In an adding or printing machine having a reciprocating gauge slide, of
variable throw, the combination with said slide of a bumper consisting of a
cylinder having an internal flange B" and a cushion at its end, a screw stem B
with collar 10 and milled disk B", a spiral spring arranged in the cylinder between
the flange B and the collar B of the stem and a supporting frame bracing
the cylinder at one end aud having a screw threaded nut BT8 at the other end
engaging with the threaded stem substantially as an for the purpose described.
10. The combination with the oscillating type carrier; of the gauge slide
having slots of different lengths in the same, gearing for connecting the type
carrier to the gauge slide, stop pins adapted to penetrate the slots in the gauge
slide, and key ievers for operating said stop pius substantially as and for the
purpose described.
11. Tlie combination of the Z-shaped type levers T, the type carrier T' with
curved axial shaft and rest t, the sleeve T secured at its upper end to the type
carrier and having an arm T with segment teeth at its lower end, an axial
post T, and the gauge slide B having attached to it an arm T with segment
teeth arranged to mesh with and oscillate the arm of the type carrier substantially
as and for the purpose described.
12. The combination in an adding machine of the adding key levers and a
subjacent adjustable locking bar arranged crosswise beneath the levers and having
slots registering with saii levers normally but adapted to be thrown out of
registration to lock said levers against depression by the longitudinal movement of
the locking bar substantially as and for the purpose described.
13. In an adding machine, the combination of the adding devices, the adding
key levers, a locking bar for the same, and automatic incchanisin connected to the
adding devices and also to the locking bar and arranged to adjust the latter to its
locking position when the adding devices are moved back to the starting point.
substantially as and for the, purpose described.
14. The combination with the adding key levers B of the sliding and slotted
locking bar W arranged beneath the levers, the rock shaft W having arm Wat
its front end engaging the locking bar and arm to' at its back end, a spring for
rocking said shaft in one direction and the rack bar A" with lug e for acting
upon the arm w of the rock shaft and moving it in the other direction, suid rack
bar being connected to the adding devices substantially as shown and described.
15. an adding machine, the combination with the, denomination wheels
representing units, tens, hundreds &c.; of a separate set of supplementary:

page_text: receiving wheels, and carrying devices operating thereon to cause the numbers to
he carried to be separately registered on said receiving wheels without causing one
denomination wheel to turn the next denomination wheel substantially as and for
the purpose described.
16. The combination of the denomination wheels A' having rigid diametrical
bar A, the separate set of receiving wheels A having notched flange a² operated
upon by the bar As, and means for setting the wheels A' back to zero substantially
as and for the purpose described.
17. The combination of the denomination wheels A' having rigid diametrical
bar A, the separate set of receiving wheels A having notched flanges a³ operated
upon by the bar A and also a lug a ou its side, and a second series of receiving
wheels A10 of higher denomination, and means for setting these receiving wheels to
zero substantially as and for the purpose described.
18. The adjusting mechanism for adding, subtracting, or throwing out of genr
these devices consisting of the pull rod with arm 9 slotted sleeve A³ with
pinions A and A', actuating shaft M10 having a slot and key connection with the
sleeve, the crown wheel A and spur wheel A connected with the adding wheels,
and the motor for rotating shaft. M10, substantially as and for the purpose
described.
19. The means for locking the adding wheels consisting of the combination
with pull rod G having pin g; of a slotted arm g, rock shaft g' rigidly attached
to said arm and bearing a pawl adapted to engage one of the gear wheels in the
adding train substantially as and for the purpose described.
20. The escapement mechanism for delivering the power of the motor inter-
mittently to the printing and paper feeding devices, consisting of the rocking
depressible frame B30 B R neted on by the keys and carrying rigid pallet
arms N No, the countershaft N with loose hollow disk N' having teeth n and a
coil spring N connecting the disks to the shaft, gear wheel N rigidly fixed on the
countershaft, the motor shaft C with rigid disk N having pins m10 ml, loose.
disk N' detacbably locked to disk N, and the escapement arm M10 carried by the
rocking frame B B R, substantially as and for the purpose described.
21. The combination with the escapement mechanism described having rigid
disk N with pins mom and ratchet tooth m', the loose disk N having notch do
and detent lever m, the articulated escapement arm M" with lugs m m aud
arm D having pin and the spacing lever N with toothed end N adapted to
act en pin d and also enter the notch do and disengage the lever pawl m
substantially as and for the purpose described.
22. The combination of the hollow disk N' with teeth spring N° and gear N,
the rocking frame B B R with rigid pallet arms N No, the disk A³ with
notch do lever pawl m and pin k, the lever K with forked end the spring
actuated stem K' jointed thereto, and the pawl mounted on the lever Kaud
adapted to engage and temporarily hold the teeth n substantially. as and for the
purpose described.
23. The combination with the impact bar of the printing devices; of the
actuating, bar M having lug n' and a suspending hanger link and the escape-
ment disk N' with teeth n adapted to catch against lug n and pull back bar M
and then allow the latter to automatically disengage itself substantially as shown
and described.
24. The combination with the reciprocating gauge slide B operating to move
the adding devices by both its forward and backward movements; of a spacing
mechanism, a lever detent for holding it against spacing, said detent being
arranged at the end of the return stroke of the gauge slide to be operated thereby
and release the spacing devices after the throw of the adding devices substantially
as and for the purpose described.
25. The combination with the reciprocating gauge slide B operating to move
the adding devices by both its forward and backward movements, a spacing
mechanism as described consisting of an intermittently acting escapement with

page_text: pin, a detent lever L for holding said pin, said lever being arranged at the end
of the return stroke of the gauge slide anil operated by it in one direction, and
having a spring for operating it in the other direction substantially as and for
the purpose described.
26. A combined adding and printing machine, comprising a set of adding wheels
with carrying devices arranged in fixed relation to the other parts, a printing
mechanism for printing the figures added consisting of laterally adjustable paper
feed rolls and a single oscillating type carrier with pivoted levers bearing printing
faces, a single impact bar acting on any one of the type levers, a feed mechanism.
and a set of key's connected to both the adding mechanism and the printing
mechanism and a gauge bar with slots of different lengths and stop pins adapted
to move said adding and printing devices a distance cominensurate with each other
but varying for each of the keys substantially as shown and described.
27. A combined adding and printing machine comprising an adding mechanism,
a printing mechanism, a set of keys connected to and operating both at the same
time, and feed mechanism for the printing mechanism consisting of a series of gears
with an elongated pinion C interposed, and rack bar C, and means to feed
vertically when adding the columns vertically, and means to feed horizontally when
printing the totals horizontally, and an adjusting device for changing the feed from
vertical to horizontal or vice versa substantially as shown and described.
.
28. In an adding machine, the combination with the wheels A' having internal
gears a notches n and diametrical bars A. on their sides, detents A", the slotted
axial shaft A with central slide rod A" having locking bit a', standard A", the
slide rod A and rack bar A" provided with a cam A adapted to unlock the
detents A, the rod A being provided with an index plate as adapted to show
through openings in the case,. the said slide rods A A" being connectedl
together and adjustable from one denomination wheel to another, substantially as
shown and described.
29. A type writing attachment consisting of a printing ribbon and guides
embracing and arranged upon both sides of the plaue of the printing ribbon,.
combined with the printing keys, a back thrust bearing for the paper, and
mechanism connecting the keys with the printing ribbon guides to positively
move the printing ribbon and its guides laterally both to and from the back thrust.
hearing and at right angles to the direction of feed of said ribbon at each operation
of a key substantially as shown and described.
30. The combination with a set of paper feeding rolls; of a type carrier pivoted
or fulcrumed to oscillate in front of the paper feeding rolls, independent type levers
pivoted or fulcrumed upon the type carrier, and a reciprocating impact bar arranged
in fixed guides to deliver a blow upon any one of the type levers whenever the.
carrier is made to move and bring any one of its type levers in line with the impact.
bar substantially as shown and described.
31. A type writing attachment, consisting of feed rolls and an oscillating carrier.
for the type levers, a series of type levers mounted upon and pivoted to the same,.
a reciprocating impact bar, operating keys adapted to swing the type levers into
alignment with the impact bar, and means for imparting a blow to the impact bar-
substantially as and for the purpose described.
32. A type writing. attachment, comprising a set of feed rolls, a carrying frame.
having a rack bar for longitudinal adjustment, gear wheels for moving said rack.
bar, other gear wheels for rotating the feed rolls, adjusting devices for throwing
one set of gears into action and the other set out of action, printing key levers
and a depression bar or rocking frame adapted to be struck by the key levers to.
transmit a step by step feed in either a vertical or horizontal direction substantially
as and for the purpose described.
33. A type writing attachment, consisting of a set of feed rolls for the paper,
the roll on one side of the printing position being a spring tension roll, and those-
on the other side being provided with positively acting gears, and key levers..

page_text: connected therewith for feeding the paper positively in either direction substantially
as shown and described.
34. In a type writer attachment, the combination of a hollow spring roller,
having a longitudinal slot, an internal eccentric pinch bar for securing the edge of
the paper, an external lever handle for operating the pinch bar having an enlarged
end or head, and the frame work having a notch adapted to receive the head of
the lever to lock the roller against its spring tension while inserting the paper
substantially as and for the purpose described.
35. In an adding and printing machine the mechanism for feeding vertically or
horizontally consisting of the combination of the thumb piece F, slide rod C
rock shaft with crank arm c, and toothed segment e sliding and corrugated
sleeve bearing double bevel gears c" bevel gear wheels c' and co arranged to be.
alternately operated upon by the double bevel gear, the long pinion C, the gear
wheels and attached feed rolls C3 C4, a horizontally adjustable frame carrying
these rolls, a yoke with rack teeth C connected to said frame, and gear wheel o
connecting the same with bevel gear e substantially as shown and described.
36. The mechanism for reversing the feed consisting of the combination of the
paper feeding rolls CC, the laterally adjustable frame with ycke and rack
teeth C, gears and c and gears c c c and long pinion C", the double bevel
gear with adjustable sleeve and means for actuating it, the vertical shaft,
bevel gears CC, shaft C" with attached bevel wheel C18 corrugated sleeve Ci
with bevel gears C and C, toothed segment crock shaft and reversing
lever. E and a shaft C2 with driving motor, said shaft being connected to the
sleeve C by a feather and groove connection substantially as iud. for the purpose
'described.
37. The combination of the key levers B, and the depression bar B30 B thrust
bar M, spring pawl ratchet wheel R and feed shaft R with bevel gears at its
ends operating the ribbon spools substantially as and for the purpose described.
38. The combination of the adding devices and the rack bar A for feeding from
one denomination to the next, the paper feed shaft C" with loose pinion P, the
-clutch P P and means for operating said clutch through the slide rod Cand
thumb picce F substantially as and for the purpose described.
Dated 19 1900
A. M. & WM. CLARK,
53 Chancery Lane, London, Chartered Patent Agents.
A. M. & WM. CLARK,
53 Chancery Lane, London, Chartered Patent Agents.