Improvements in Calculating Machines.
Year: 1894

page_text: Date of Application, 30th May, 1894-Accepted, 30th May, 1895
COMPLETE SPECIFICATION.
Improvements in Calculating Machines.
I FREDERICK WILLIAM GOLBY of 36 Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention as
communicated to me by Heinrich Esser of Aachen, Germany, Engineer, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
These improvements relate to calculating machines, by which long and tedious
calculations may be solved. And the object of the improvements is to provide a
machine of comparatively simple construction by which the results of problems to
be solved especially in multiplying or dividing figures are obtained in the shortest
possible time and correctly indicated on and by the machine.
7766
The improved machine comprises three indicators, which may be designated as
"operating indicator," product indicator" and "quotient indicator," because by
setting a number as multiplier in the quotient indicator and a number as
multiplicand in the operating indicator, the product indicator, after manipulating
with the operating indicator in one direction shows or indicates the product of the
multiplication; and vice versa, by setting a number in the product indicator as the
dividend and a number in the operating indicator as the divisor and manipulating
the operating indicator in a reverse direction, the quotient indicator will show or
indicate the result of the division.
The invention consists in the arrangement, disposition and construction of these
indicators and devices for manipulating with and carrying numbers and results
from one indicator to another, as will be hereinafter more fully described and
pointed out in the claims.
The invention will be more fully understood taken in connection with the
accompanying drawings forming part hereof, in which
Figure 1 is a vertical cross section of the improved calculating machine, showing
an element of the operating indicator mounted on a shaft, the product indicator
slidingly mounted on a hinged bed, and means for manipulating the product
indicator from the operating indicator.
Figure 2 is a similar view, showing the means of setting and locking an element
of the operating indicator, and also showing the sliding and hinged product
indicator, and means connected to the latter for automatically locking the operating
indicator when the product indicator is to be moved one or more places.
Figure 3 is a section on the line x-x of Fig. 6, showing the quotient indicator,
means for holding each element thereof in position, means for operating a certain
element from the shaft of the operating indicator, and also showing in dotted lines
the devices for braking or locking the said operating indicator.
Figure 4 is a section on the line y-y of Fig. 6, showing a connection between
two elements of the quotient indicator, by which the element of a high order is
turned one tooth or space by the adjacent element of the next lower order.
Figure 5 is an elevation of the crank attached to the shaft of the operating
indicator.
Figure 6 is a longitudinal elevation partly in section of the machine, showing the
operating indicator, the operating or main shaft and the crank therefor, the quotient
indicator, and the means for actuating a certain element of the latter from the shaft
of the operating indicator.

page_text: Figure 7 is a longitudinal elevation partly in section of the machine, showing the
product indicator slidingly mounted on a hinged bed, and showing also the means
by which a sliding tooth on the main shaft of the operating indicator is moved
opposite a certain element of the quotient indicator, when the product indicator is
moved on its hinged bed.
Figure 8 shows a plan of the machine partly in sections taken at various lines,
and
Figure 9 shows in detail the construction of an element of the operating
indicator.
Referring now to the drawings for a further description of the invention, S is the
operating indicator mounted on the main or operating shaft A journalled in the
machine frame c; D is the quotient indicator arranged at the right hand side of
the operating indicator S and above the shaft A; C is the product indicator
slidingly mounted on a bed d³ which latter is journalled to the frame of the machine
by the bed extension d' and hollow sleeve d³ for a purpose to be hereinafter more
fully described.
The operating indicator S comprises a drum or circular housing made up of the
annular pieces E, E, E, &c. which is fastened by the head pieces as a to the
shaft A, so that the drum turns with the said shaft whenever the latter is turned
in one or the other direction by the crank K. Inside the drum are provided in
grooves a the discs or elements B which are supported by the shaft A and are
partially rotatable thereon; any number of discs may be provided. but usually five
or six are found sufficient, and these discs or elements B (Figures 8 & 9) representing
units, tens, hundreds, etc. are each provided at a part of their periphery with the
numerals or digits from 0 to 9, which may alternately be brought to view at sight
holes d arranged in the housing and in line with the numerals on each of the said
discs. Adjacent to the sight holes are provided slots e', e², e³, &c. for the curved
handle bars H which are contained in recesses of the discs B and serve to partially
rotate the latter, and also to operate teeth held in apertures in the annular
picces E₁ E, &c. of the housing or drums. There are nine teeth for each disc B
corresponding to the numerals 1 to 9 on each disc; in addition to these there are
further provided in slots of the annular pieces E₁ E, &c. two other teeth /' for
each disc one tooth being located in advance of the (unit) tooth corresponding to
the numeral 1 and the other in succession to the (unit) tooth corresponding to the
numeral 9, and these two teeth are operated and serve a purpose as will be
hereinafter more fully described. The teeth ¹ on successive annular pieces E₁ E, &c.
are shown dotted in one view Figure 1.
The teeth are normally flush with the outside of the annular pieces E, E, &c.,
except when the machine is in operation, when certain teeth of one or all of the
discs B may be projected beyond the surface of the housing, in order to engage a
gear wheel F2 of the product indicator C as will be described. To bring one or
more of the outer ends of a series of teeth h beyond the surface of the housing,
there are provided two curved strips C' and C2; the strip C2 is fastened to the inner
end of the handle bar H and is held in a recess d¹³ cut in the periphery of the
disc B (Figs. 2 & 9) by a spring d"; the other curved strip C is held on the
periphery of the disc B and projects laterally from one side thereof. At the inner
ends of the teeth and on one side thereof are provided notches d¹s (Fig. 1) which
engage one or the other of the curved plates CC2; when the machine is not in
operation the notches are in engagement with the plate C2, and if it is desired to
bring a certain number of teeth beyond the surface of the drum E, E, &c. in order
to engage the gear wheel F2, the handle bar H is pushed inward and turned until
the desired numeral of the disc B to be operated with, presents itself in the sight
hole d indicating that a corresponding number of teeth has been transferred to the
curved plate C, the handle bar H is then released and automatically pushed outward
by the spring d pressing against the curved plate C². When one or more teeth h
are pushed outward in the manner described, the respective disc is locked to the
annular piece E, E, &c., and is prevented from being further turned by accideut or

page_text: other cause by means of the curved plate C² which abuts at q against the last of the
drawn out teeth and the curved plate C' which abuts at p against the next
succeeding drawn-in tooth h, as will be readily seen from Fig. 2.
To bring the teeth into their normal position again, the handle bar H is again
pressed inward until the two ends of the curved plates C¹ Care flush with each
other, the handle bar H is turned so as to transfer the outdrawn teeth h from the
curved plate C¹, onto the curved plate C³, by then releasing the handle bar H the
spring pushes all of the teeth into their normal position and within the annular
pieces E₁ E, &c. of the drum.
The teeth disposed at each end of a series of teeth of a disc B, are each
provided with shoulders 18 extending into grooves t¹ 2 &c. of the annular
pieces E, E, &c., so that wedge shaped projections m formed on levers / may force
one of the said teeth outward to engage the gear wheel F of the product
indicator C and to rotate the said wheel one tooth backward or forward according
to the direction in which the shaft A and the drum or housing of the operating
indicator S together with the various dises B locked thereto is turned, as will be
more fully explained. The two teeth are normally held within their apertures
of the housing by the springs J which are fastened at one end to a flange aº at the
inside of the housing (see Fig. 1).
The quotient indicator D which is illustrated in Figs. 3, 4, 6 and 8, is located
above the main shaft A and is actuated by the latter. This indicator consists of a
housing d fixed to the machine frame in any suitable manner and any desirable
number of elements journalled on a shaft f. Each element of the indicator
consists of a recessed” disc u having on its peripheral surface numbers or digits
from 0 to 9 inscribed thereon; on one side of the disc u is formed a brake or
regulating wheel u¹ having 10 indentations (Fig. 3), in which a roller a, journalled
to a lever a hinged at a² to the inside of the housing d engages. The roller a is
constantly pressed into one of the said indentations by the spring i*, so that the
disc u cannot accidentally or otherwise be moved and present a number, at the
respective sight hole 8 of the housing, which is not put there by the action of.
the machine, as will be readily understood. One of the indentations (*) of the
brake wheel u and corresponding to the number 0 inscribed on the peripheral
surface of the disc u is cut deeper than all the others, to allow the roller a and its
lever a¹ to move towards the shaft A for a purpose to be described. Ou the side
of the brake wheel u' of each element u is formed or secured a gear wheel u² in
the teeth of which a tooth z', slidingly mounted on the shaft A engages to turn the
said element u the space of one tooth when the shaft A is turned in one or the other
direction, as will be more fully described. A crown-wheel u³ (Figs. 4 & 6) having
also 10 teeth is secured to the side of the gear wheel u² and this is provided for
carrying 10-units, tens, hundreds etc., to the element u of the next higher order, or
deducting 10-units, tens, hundreds etc. from such element, according to the direction
of rotation of the shaft A; for accomplishing such manipulations, a spring 9² having
a tooth g³ at its free end is fastened to the recessed disc u and this spring tooth
ready to engage a tooth of the crown-wheel u³, whenever the numeral 9 is exposed
in the sight-hole 68 of the housing d; if then the disc is turned so as to
present 0 at the sight hole the spring tooth g³ is forced, by means of a roller d
journalled inside the housing d as shown in Figs. 4 and 6, into the crown-wheel u³
and turns the disc u of the next element one tooth, indicating that 10-units, tens or
hundreds etc., have been carried.
This
The product indicator C is slidingly mounted upon a way d³, which is fastened
to the angular bed d' forming a sleeve or hollow shaft d journalled to the standards
of the machine as shewn in Figs. 1, 2, 7 and 8. Inside the hollow shaft d³ is
contained a sliding bar which carries at one end the army (Fig. 7 & 8).
army is extended towards the shatt A and is provided at this end with a fork
engaging the grooved collar 2 slidingly mounted on the feathered shaft A, and on
which the tooth for actuating the respective elements of the quotient indicator D
is formed (see Figs. 3, 6 and 8). The other end of this sliding bar d² is provided

page_text: +
with teeth in which the teeth of a gear wheel M studded to the hinged bed d
engage.
The housing c¹ of the sliding product indicator C is provided with a rack de
meshing also with the gear wheel M of the bed d' so that when the product
indicator is at its utmost position towards the left, the arm y is in its utmost position
towards the right, in such positions the unit elements of the product indicator C
and the operating indicator S are in line with each other, while the tooth z¹ moved
along the shaft A is in position to engage the unit element of the quotient
indicator D. If now the product indicator C is moved one place towards the right
so that the "tens" element of the product indicator C is in line with the "unit
element of the operating indicator S, the arm y brings the tooth 2 into position to
actuate the " tens element of the quotient indicator D.
"
In the drawings Figure 8, the army is shown in its two extreme positions in full
and dotted lines to clearly illustrate the sleeve z and tooth .
The product indicator C is composed of a number of elements T₁ rotatably
mounted on a shaft contained in the sectional housing c¹, and the latter is
provided with as many sight-holes c² as there are elements T. Each element
comprises a recessed disc T on the peripheral surface of which digits from 0 to 9
are inscribed or printed, so that one number at a time may be seen through the
respective sight-hole 2. On one face of the disc T¹ is secured a gear wheel F¹
meshing with the gear wheel F2 located in a slot c and journalled to the wall of a
section of the housing c¹ as shown in Figs. 1, 2 and 7. These elements T¹are
actuated by the teeth hand of the operating indicator S, which mesh with the
gear wheel F2 as will be more fully described.
A spring lever O is provided on the housing for each of the gear wheels F² to
bold and adjust the elements T into proper positions.
On the recessed side of the disc T or rather on the inside of the rim of the disc
is formed a triangular projection W1 (Fig. 2) acting as cam for the right angular
lever W, which is hinged to the wall of a section of the housing c¹; one
arm of this lever is provided with a roller W2 and the other arm is normally held
in a slot by a spring W³ which also tends to keep the roller W2 in contact with
the said rim of the recessed disc T. If an element T' of the product indicator C
is rotated by the teeth of the operating indicator S and the cam W engages the
roller W2, the right angular lever W is turned about its pivot and the free end of
the arm is forced out of its slot elo and against a projection of the lever l, forcing
the cam shaped end on thereof into the grooves t', t2 &c. of the operating indicator S,
so that the said end is caused to engage one "tens" tooth of the latter indicator
and draw it out into position to engage with the teeth of the gear wheel F². To
facilitate this movement, the lower end of the arm n of the lever 7 may be provided
with a triangular bearing, two sides of which are alternately in contact with a
roller r, journalled to a lever r pivotted to the frame of the machine; a spring 2
interposed between the lever and the machine frame tends to keep the lever / in
either of its extreme positions; if therefore the roller r engages the base of the
triangular bearing n, i.e., in the other position of the lever from that shown in the
drawings, little power would be required to force the roller out of the base of
the bearing, and the lever into the position shown. In Figure 3 a modified form
of the lever W is shown.
The levers are automatically brought into the other or normal positions not
shown in the drawings by the grooves t' t &c. of the housing of the operating
indicator S, which grooves are not cut entirely around the peripheral surface of the
said housing but run gradually at two places a to the surface of the housing, and
it is by these wedge-shaped terminations of the grooves t¹ t2 &c. that the levers / are
brought into normal position, when the housing of the operating indicator S is
rotated in one or the other direction, as will be readily understood.
The housing composed of sections fastened together of the product indicator C
is provided near its bottom with an additional racks (see Fig. 7) the teeth of
which are pitched the distance between two elements of the operating, quotient or

page_text: product indicator, and a tooth s¹ (see Fig. 8) is provided on either the standard or
a part of the frame c of the machine. The object of this racks and tooth s¹ is to
maintain the various indicators and parts in proper relative position, while certain
operations are performed by the machine.
To operate the machine any kind of a crank lever K may be applied to the main
shaft A provided that the same does not permit more than one revolution in one
direction at a time.
In the drawings I have illustrated a crank motion, which has been found efficient,
and which consists of the handle bar K secured to the shaft A; to the handle bar K
is slidingly mounted a bolt K³ one end of which is constantly pressed into or towards
a guide Ki near the handle by the spring K. The bearing of the shaft A is provided
with a circular rim K2 having a notch K into which a projection K on the bolt K³
is forced by the said spring as soon as one revolution of the crank shaft A and
operating indicator S is completed. To release the said projection K from the
notch K and to make the crank operative, the bolt K³ is pushed against the action
of the spring until the projection K engages the inside of the rim K² allowing the
crank K to be turned in any direction, as will be readily understood.
To automatically lock the machine, when the quotient indicator D is at zero, a
brake is provided on the operating indicator S and consists of a shaft G journalled
in the frame of the machine and extending from end to end thereof (Figs. 3, 6, 7
and 8). At the left end of this shaft is fastened a lever g to which another lever g¹
is held by the spiral spring g5, both levers therefore are secured to the shaft G and
are provided with oppositely disposed hooks or projections g, g'. The head a' of
the housing E, E, &c. of the operating indicator S is provided with a circular
groove a and two oppositely disposed notches X, X' into which the said hooks or
projections y, g may enter; either hook falling into its respective notch, therefore
will lock the machine, the groove as of the head a' is of such a width, as to allow
the passage of the two hooks g, g', when the machine is in operation. At the
right hand end of the shaft G and extending the full length of the quotient
indicator D, is secured a plate g' acting as lever for a number of rods i which are
hinged to the outer edge of the plate g. There are as many rods i as there are
elements u of the quotient indicator D; each rod i is provided with a tooth ¹ on its
free end extremity, and the latter is in contact with a pin on the hinged lever a¹
carrying the brake roller a. When the quotient indicator D is brought to zero
position, that is when the machine is to be locked, the roller a is in contact with
the deep indentation corresponding to zero on the disc u, the tooth on the
rodi, contacting with the lever a', the projection thereon is therefore in the path
of the sliding tooth ' of the main shaft A and when the latter is rotated in one or
the other direction, it will either elevate or depress the rod i and oscillate the plate g¹
which in turn rocks the shaft G and causes the engagement of one or the other
hook g, g' of the levers g, g' with one of the notches X, X'. The hook g' of the
lever gengages the notch X', when multiplication in the ordinary manner is
executed on the machine; and the hook g of the lever g engages the notch X,
when the machine is operated and set for division or abridged multiplication.
The lever of the shaft G is provided with an extension y (Fig. 2) having a
trunnion g³ and on the sleeve d³ of the bed of the product indicator C is secured an
arm k to the free extremity of which one end of a rod vis pivotted, the other end
is connected to the trunnion 8 by a slotted connection, so that when the product
indicator C is moved manually the distance of one or more of the teeth of the rack s
which necessitates the said indicator to be turned back on the hollow sleeve d³
towards the rear of the machine then in order to clear the wheels F2 from the
levers, the locking of the operating indicator S must be performed, as otherwise
the product indicator C cannot be disengaged from the tooth s ou the frame,
because the hook g' of the lever g' which is then contained in the groove X' of the
head a', as well as the extension 9 of the lever y and rod will not permit the
disengagement of the additional rack s from the tooth s'. It is evident therefore;
that the operating indicator S is locked when the product indicator C and the

page_text: sliding tooth on the main shaft A is to be moved, which ensures the proper
setting of the elements of the operating indicator with the desired elements of the
product indicator, as well as the alignment of the teeth h, ' with the gear wheels
and the alignment of the sliding tooth with a projection of any one rod i and a
gear wheel u² of the quotient indicator D.
The elements of the product indicator C and the quotient indicator D may
readily be brought into zero position by partially drawing out and turning the
respective shafts b, f to which knobs 69, f are attached; on the shafts b, f and
inside the respective indicators are secured arms, adapted to engage pins of
the discs T, u, so that when the shafts b, fare partially drawn out and turned the
discs or elements are brought into the desired zero position. Springs on the
shafts and return them to their initial positions when released.
A great advantage of the improved machine is, that the mechanism is contained
in housings, by which dust etc., is prevented from entering and clogging the parts.
Any number of elements for the various indicators may be employed, in Fig. 6
for instance is shown the operating indicator S comprising four elements, and
the quotient indicator D composed of six elements, while the product indicator C
Fig. 7 contains seven elements. For multiplying figures, the elements u of the
quotient indicator D are set so as to expose the numerals constituting a multiplier
through the sight holes while the elements B of the operating indicator S are set
to show the numerals constituting the multiplicand, the operating indicator is then
turned in the direction of the arrow (Figs. 1 and 5) i.e., towards the right by
turning the crank K in the same direction, the product indicator C being shifted
after each operation so as to bring the tooth respectively opposite the units, tens,
hundreds, &c. element of the quotient indicator D. The rotation of the shaft A is
repeated until all the elements of the quotient indicator D are brought in position
to expose the numerals 0 (zero position). The product of the multiplication is
then indicated or shown by the numerals exposed through the sight holes c² of the
product indicator C; it is understood however, that all the elements of the latter
indicator are set at zero position before beginning the operation.
For dividing figures, the elements T¹ of the product indicator C are set to expose
the numerals constituting the dividend, while the elements B of the operating
indicator S are set to show the numerals constituting the divisor, the elements u of
the quotient indicator D are set at zero position. By now turning the crank K in
the opposite direction or towards the left, the quotient of the division will appear
on the quotient indicator D. .
In multiplying figures an abridged method may be employed, by which
considerable time and labour is saved.
If a large figure, say 33333 is to be multiplied for instance by the figure 2479,
the operation may be performed on this machine in the same manner as is employed
on machines heretofore built, ie., the multiplication of two factors may be carried
on in the usual way and as indicated here-

page_text: containing sets of sliding teeth adapted to be moved by said elements, a product
indicator slidingly mounted on a bed which is hinged to the machine frame by a
hollow shaft, said product indicator comprising a number of elements adapted to
be actuated by the said teeth of the operating indicator, a quotient indicator
comprising a housing secured to the frame of the machine and containing a
number of elements rotatably mounted on a shaft, a sliding tooth rotating with
the main shaft and adapted to actuate one element of the quotient indicator, and
connections between said product indicator and said sliding tooth, substantially as
and for the purposes set forth.
3. In a calculating machine the combination of a frame, a main shaft, an
operating indicator, a product indicator and a quotient indicator, said operating
indicator comprising a number of elements rotatably mounted on the said main
shaft, numerals on the peripheral surface of the said elements, a housing secured
to said main shaft and having a set of teeth for each element, sight holes in the
housing and in line with the numerals of the elements, an operating lever protruding
the housing for each element, a curved plate normally pressed into a recess of the
element by a spring, another plate attached to the periphery of the element, sail
plates engaging the said teeth and adapted to either hold any number of a set in
operative position with devices of the product indicator, or to hold the said teeth
in a depressed position and within the housing, substantially as and for the purposes
set forth.
4. In a calculating machine the combination of an indicator comprising a
cylindrical housing fastened to the main shaft of the machine, grooves within said
housing by which elements rotatably supported by said shaft are guided, a set of
grooved teeth for each clement mounted in apertures of the housing, an operating
lever for each element, a recess in the periphery of the element, a plate secured to
the inner end of the operating lever and engaging the grooved teeth, another
plate on the periphery of the element adapted to receive and hold the teeth
transferred from the lever plate, substantially as and for the purposes set forth.
5. In a calculating machine the combination of a number of elements rotatably
mounted on a main shaft, a housing fastened to said shaft and surrounding the said
elements, a set of grooved teeth provided in apertures of the housing for each
element, a curved plate on the periphery of each element, a recess formed in the
periphery adjacent to the said plate, a hand lever for each of the elements, a
curved plate on the inner end of said lever normally pressed into said recess by a
spring, a spring tooth at each end of a set of teeth before mentioned mounted in
the wall of the housing, and a groove extending partially around the housing
and adjacent to said spring teeth, substantially as and for the purposes set forth.
6. In a calculating machine the combination of two indicators designated as
"operating indicator" and "product indicator" the operating indicator comprising
a housing secured to the main shaft of the machine a number of elements rotatably
mounted on the same shaft, a set of sliding teeth for each of the elements and held
in apertures of the housing, means for projecting any number of said teeth beyond
the surface of the housing and locking the elements to the housing and main
shaft, a spring tooth arranged at each end of a set of teeth, and being normally
held within the housing, a groove extending partially around the housing, and a
shoulder projecting from each of the said spring teeth into the said groove; the
product indicator comprising a housing secured to the frame of the machine, a
shaft journalled in said housing a number of elements rotatably mounted on said
shaft, said elements composed of a disc having cam shaped projections and a gear
wheel, a right-angular lever for each element pivotted to said housing, an idle gear
and brake wheel studded to said housing, meshing with the gear wheel and being
in line with a set of teeth and the spring teeth on the operating indicator, a lever
for each element of the latter indicator hinged to the frame of the machine, and
adapted to be pressed with its free end into the groove of the operating indicator
to draw one or the other of the spring teeth partially out of its aperture and into
the teeth of the idle gear, substantially as and for the purposes set forth.

page_text: 7. In a calculating machine the combination of the elements B, teeth h¹, setting
lever H, main shaft A, elements T', gear wheels F2 and F', levers and means for
operating the levers to bring the teeth 1 into contact with the wheels F³,
substantially as described.
8. In a calculating machine the combination of the housing E' E² &c. secured,
to the main shaft A, the grooved teeth h and spring operated teeth, elements B
rotatably mounted on the shaft A, levers H carrying the plate C2 said plate being
normally held in the recess d¹³ by the spring d¹ and engaging the grooved teeth h,
plate C adapted to receive the outdrawn teeth h, said plates C2 and C'also adapted
for locking the element B to the main shaft A, the housing c¹, elements T' having
gear wheels F, idle gear wheels F2 meshing with the wheels F1 and being in line
with projections m on levers / pivotted to the frame of the machine, right-angular
levers W having rollers W2 adapted to ride over cam shaped projections W' on
the elements T¹ to either bring a tooth ' into contact with the gear and brake
wheel F2 or cause a signal to be given, and means for bringing and holding the
lever into normal position, so as to be again depressed by the arm of the lever W,
substantially as and for the purposes set forth.
9. In a calculating machine a quotient indicator, comprising a housing secured
to the frame of the machine, a shaft journalled in the said housing, elements
rotatably mounted on said shaft, each of said elements composed of a recessed disc,
having a brake wheel, gear-wheel, and crown-wheel secured thereto or formed with
the disc, and a spring tooth secured to the recessed disc adapted to engage the
teeth of the crown-wheel of the adjacent element, substantially as and for the
purposes set forth.
10. In a calculating machine a quotient indicator comprising a housing secured
to the machine frame, a shaft journalled in said housing, elements composed of a
recessed disc having a brake-wheel, gear-wheel and a crown-wheel secured to or
formed therewith a spring tooth secured to the said disc and caused by a roller of
the housing to engage the teeth of the crown wheel of the adjacent element, a
tooth and a knob f' on the said shaft for setting the said elements in zero
position, substantially as and. for the purposes set forth.
11. In a calculating machine, the combination of an operating indicator and a
product indicator, substantially as described, of a quotient indicator comprising
a housing secured to the frame of the machine, a shaft journalled in said housing,
elements rotatably mounted on said shaft, connections between said elements by
which tens are carried from one element to the other a sliding tooth on the
main shaft of the machine adapted to engage any one of said elements of the
quotient indicator, and connections between said product indicator and said tooth,
substantially as and for the purposes set forth.
"
12. In a calculating machine the combination of the frame c, bed do, product
indicator C having rack do, gear-wheel M rack arm d², sliding tooth 2¹ and quotient
indicator D, substantially as described.
13. In a calculating machine the combination of the frame c, hinged bed d³ d',
product indicator C having racks do and s, tooth s¹, gear-wheel M, rack arm d²,
sliding tooth z¹ and quotient indicator D substantially as described.
14. In a calculating machine an indicator D comprising the housing d, shaft f,
a number of elements each composed of a disc u, brake-wheel u', roller a journalled
in lever a', gear-wheel u², crown-wheel u³, spring tooth and roller d' in
combination with a tooth 21 of the main shaft of the machine adapted to engage
the said gear-wheel u², substantially as described.
15. In a calculating machine the combination of an operating indicator comprising
a housing fixed to the main shaft a groove a³ and recesses X and X' in said housing,
a hinged bed for the product indicator, an extension on said bed, a rock shaft G
journalled to the machine frame and having secured thereto two levers provided
with teeth adapted to engage the said recesses, and a connection between said rock
shaft and the extension of the hinged bed, substantially as and for the purposes
set forth.

page_text: 16. In a calculating machine the combination of an operating indicator
comprising a housing, a groove a and recesses X and X' therein, a hinged bed
supporting a sliding product indicator, an extension on the said bed, a rock-
shaft G journalled to the machine frame and having secured thereto two levers g
and g¹ provided with teeth adapted to engage the said recesses, an arm secured
to the shaft and a link between said arm and extension, a quotient indicator
comprising a housing attached to the frame and carrying rotatable elements having
brake-wheels provided with indentations, a deep indentation corresponding to
zero on the elements, a roller journalled on a spring lever hinged to the housing
and engaging said brake wheel, a main shaft, a sliding tooth z¹ on the same adapted
to engage any one of the said elements a toothed lever i for each element hinged
to an arm g of the shaft G and contacting with said spring lever, said toothed
lever adapted to contact with the sliding tooth when the respective clement is
to be brought into zero position and to lock the main shaft and operating indicator
at such position, substantially as and for the purposes set forth.
17. In a calculating machine the combination of the elements u having gear-
wheels u², and brake-wheels u¹ provided with a deep indentation u, a roller for each
brake-wheel journalled to a spring lever a¹, a main shaft A, a sliding tooth -
thereon, an operating indicator comprising a housing secured to the main shaft, a
groove a³ and recesses X, X₁ in said housing, a rock-shaft G two levers g and g
secured to said shaft and having teeth g" and g' adapted to engage the said recesses,
an arm g* attached to said shaft and baving as many rods i hinged thereto as there
are elements and a tooth on each rod i adapted to be engaged by the sliding
tooth z' substantially as and for the purposes set forth.
18. In a calculating machine, the combination of the main shaft A, a sliding
tooth thereon, elements u having a brake-wheel u¹ with a deep indentation u, a
roller a in line with the said brake wheel, said roller pivotted to a spring lever al,
a housing a fast to the main shaft A, a groove a and recesses X X' in said
housing, a shaft G, levers g, g' attached to said shaft and provided with teeth g g7
adapted to engage the said recesses, an arm * on said shaft G and toothed levers i,
substantially as and for the purposes set forth.
19. In a calculating machine a product indicator comprising a housing slidingly
mounted on a hinged bed, a shaft, a number of elements rotatably supported by
said shaft, each element composed of a recessed disc T having a cam-shaped
projection W and a gear-wheel F', a gear-wheel F2 journalled to the housing and
meshing with an operating indicator comprising a housing, sliding teeth mounted
therein and elements within the housing adapted to actuate the teeth to cause the
engagement of said teeth with the said gear-wheels F2, substantially as and for
the purposes set forth.
20. In a calculating machine a product indicator comprising a housing slidingly
mounted on a hinged bed, a shaft, a number of elements rotatably supported by
said shaft, each element composed of a recessed disc T¹ having a cam-shaped
projection W and a gear-wheel F', a gear-wheel F2 journalled to the housing and
meshing with the gear-wheel F', in combination with an operating indicator
comprising a housing, sets of sliding teeth mounted therein, elements within said
housing to actuate said teeth h, teeth h' also mounted in said housing and normally
kept within the same by springs, levers fulcrumed to the frame of the machine,
and adapted when depressed by the levers W, to engage the teeth and bring
them into contact with the gear-wheel F2, substantially as and for the purposes
set forth.
21. In a calculating machine the combination of the operating indicator S
comprising the housing a', teeth h¹, grooves t t &c. with terminations a
elements B, levers 1, sliding product indicator C comprising the housing c, gear-
wheels F2 and right-angular levers W pivotted thereto, elements having
cam-shaped projections W₁ corresponding to zero-position of the same, and adapted
to operate the said levers W, and the teeth to bring the latter into engagement
with the said gear-wheels F2, substantially as described.

page_text: 22. In a calculating machine the combination of the main shaft journalled in
bearings of the frame, a circular rim attached to one bearing and having a notch,
a crank arm attached to the shaft and provided with a guide, a bolt slidingly
mounted in said guide, a projection on said bolt adapted to enter said notch, and
a spring tending to force the said projection into said notch, substantially as and
for the purposes set forth.
This 20 1
1004
F. W. GOLBY,
36, Chancery Lane, London, W.C.