Improvements in or appertaining to Type Writing Machines.
Year: 1890

page_text: Date of Application, 9th Dec., 1890
Complete Specification Left, 25th Aug., 1891-Accepted, 3rd Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in or appertaining to Type Writing Machines.
A communication from abroad by FRANK HENRY HARRIS, of Canandaigua,
County of Ontario, State of New York, Stenographer, CORYDON EUGENE
CRANDALL, of Canandaigua, aforesaid, Attorney-at-Law, PETER MESICK, of
Coxackie Station, County of Columbia, State of New York, Paper Manufac-
turer, & ALBERT EDGERTON AYER, of Boston, County of Suffolk, State of
Massachusetts, Machinist, all in the United States of America.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street, Manchester,
both in the County of Lancaster, & 323, High Holborn in the County of
Middlesex, Civil Engineer, do hereby declare the nature of this invention to be
as follows:-
These improvements relate chiefly to type-writing machines of the class in which
the paper to be printed is held on a carriage moved longitudinally by a suitable
mechanism, when released by the depression of the type-keys or the spacing device.
The invention relates more particularly to the matter of forming the spaces
between words and to the construction and operation of the paper-carrying roll.
The invention is in part an attachment for a type-writing machine, applied for
the purpose of producing a word space simultaneously with the printing of the last
letter or letters of each word. This part of the invention has for its object to
provide certain improvements and mechanisms by the use of which the extra or
special movement of the hand, and the additional touch of the finger, to make a
word space after the word is printed, are avoided.
The invention is also, in part, an improved construction of the paper-carrying
roll and the mechanism for moving the carriage; all of which improved parts are
hereinafter fully described, and shown on the accompanying drawings.
Referring to the drawings:-
Figure 1 is a rear elevation of the frame and other parts of a type-writing
machine, showing some of the improved parts attached.
Figure 2 is a side sectional elevation of parts of the machine, condensed as to
length and sectioned as on the dotted line 2 2, in Figure 1, parts being broken away.
Figure 3 is an enlarged view of the spacing dogs and associated parts, better
showing the construction of the same.
Figure 4 is a plan of a portion of the machine showing the paper carriage and
its paper-supporting roll with the improved means for impelling the carriage
longitudinally when released by the escapement.
Figure 5 is a simple modification of the form of the keys.
Figure 6 is a plan of the lower parts of a type-writing machine, showing some of
the improved parts attached in place.
Figure 7 is a side elevation of the paper-carrying roll, partially sectioned as on
the dotted line 7 7, in Figure 4.
Figure 8 is an end elevation of the parts shown in Figure 4.
Figures 2, 4 and 7 are condensed as to length, and Figure 6 is drawn to a scale
somewhat larger than that to which Figures 1 and 2 are drawn.
Referring to the parts shown:-
A is the frame of a type-writing machine, which may be of any suitable construc-
tion, B being the ratchet-bar and C the carriage-way rod, all substantially of
common construction. The hanger E for some of the parts and the rocker k,
spacing dogs i and h, and loose-dog stop 1 are also substantially of common construc-
tion in various type-writing machines. The stop 1, 'for the loose dog is secured

page_text: adjustably to the stationary dog i, by a clamping screw v, passed through a slot w in
the stop.
Within the frame A of the machine, a light tilting frame or lever D is placed,
for the purpose of word spacing, this tilting frame being held to turn on a horizontal
pivot rod a, resting in the frame A, as shown in Figures 2 and 6. The frame Dis
conveniently made polygonal in form and preferably constructed to inclose the keys
of the machine.
The frame D is not connected in any way with either of the spacing dogs. The
pivot-rod a crosses the frame or lever D near the middle of the latter, said frame
acting, when used, as a lever of the first order. The form of the lever in rear
of the pivot-rod is not essential, this part serving only to be connected with parts
above it, as hereinafter explained.
At its forward end, this tilting frame or lever is provided with horizontal touch-
bars b, Figures 2 and 6, rigid with said frame or lever and forming part thereof.
d are the koys of the machine. These are, as shown, split or divided by spaces c,
which spaces are occupied by the respective touch bars b.
i
Now, from this description and illustration of the parts, it will be understood that
any key may be depressed by the finger of the operator, as usual in type-writing
machines, without depressing the tilting frame. Or that, by slightly extending the
finger when the touch is made, so as to cover a touch-bar, the tilting frame may
also be depressed with the key. When a key alone is depressed to print a single
letter, one tooth of the ratchet is allowed to escape the spacing dogs. But the
device is so constructed that, when the tilting frame is depressed with the key, two
teeth of the ratchet bar will pass the dogs. This extra escapement produces a word
space between two consecutive words, the tilting frame being depressed by the
finger when depressing the key to form the last letter of the word.
The loose dog stop 1, in machines heretofore made, has been set so as to arrest
the motion of the loose dog h, when the latter has advanced or swung forward to
the extent of one tooth of the ratchet bar. In the improved machine, this stop is
so adjusted that it will allow the dog to advance two teeth, and another movable
stop e is provided, to arrest the dog when it has advanced one tooth. Now, by
throwing this movable stop out of the way of the dog, the latter will swing forward
to the extent of two teeth of the rack, as shown by dotted lines in Figure 3, or,
against the stop l. This serves to allow the carriage to advance sufficiently to form
a word space after the word is printed.
The stop e, shown, is in the form of a bell crank, and held to turn in a vertical
plane upon a pivot pin f, Figures 1 and 2, said pin being secured in a bracket or
holder 9. This holder y is secured to the hanger E by a clamp screw a', passed
through a horizontal slot in the holder, which admits of a horizontal adjustment
of the latter. This adjustment admits of the stop e being shifted in directions
towards or from the loose dog h, so as to regulate the action of the latter with
reference to the teeth of the ratchet bar. By means of the adjustability of the
stop e, the loose dog may be caused to act so as to allow two (or more) teeth of
the ratchet bar to escape the dogs at once, as may be found necessary in spacing.
n is a simple bar or part connecting the tilting frame with the stop e, said bar
being secured to the tilting frame by a simple screwz. This single fastening allows
the bar to slightly swing laterally to correspond with the adjustment of the stope,
above described. The bar is connected with the stop e by means of a pin cl
passed through both, the stop entering a slit in the upper end of the bar. By
means of this connection between the stop e and the tilting frame, when the latter
is tilted, as shown in dotted lines in Figure 2, the stop will be turned laterally at
one side of or out of the way of the loose dog h, allowing the latter to swing
forward over two teeth of the ratchet bar, or against the stop l, as above stated.
The loose dog is actuated by a slender spring u, Figure 3, back of the stationary
dog, and held by the latter.
To illustrate the action and the use of the parts in type writing, take, for instance,
the words, "The man.' When the operator is about to depress the key to print

page_text: the final letter "e," of the word "The " care is taken to extend the finger over the
touch bar b, so as to also depress the tilting frame. This operation serves to both
print the letter "e "and to form the proper space between the words "The" and
; and no further thought is given the matter of the word space. The next
act of the operator is to commence the final word "man," by depressing the
"m" key.
"man
"
It is not necessary that the keys or the tilting frame should be made in the exact
forms shown, as any convenient form or arrangement of the parts, in which a
part of said frame is closely associated with each key so that the frame may be
depressed or tilted with the finger when the key is depressed, will answer the
purpose of the invention.
The minor parts, o, of the keys may be omitted, as shown in Figure 5, as not
being absolutely essential to the invention; but they are found in practice to
constitute desirable rests for the end of the finger when depressing the touch-
bar with the key. Their presence renders the touch of the keys more agreeable.
A slender spring, p, connecting the rear part of the tilting frame with an
extended part of the stop e, serves to hold the tilting frame in its normal position,
shown in full lines in Figure 2. This the spring effects for the reason that its
bearing-point on the stop e is farther from the pivot, f, of the stop than the
bearing-point of the connection n is from said pivot. On this account any upward
motion of the rear part of the tilting frame will increase the distance between the
two bearing points of the spring -ate and at the hook y-and thus increase
abnormally the tension of the spring. This will cause the spring to tend to return
the frame to its normal position.
The tilting frame is below the ribbon-shift rock-shaft », which shaft forms a stop
for the upward motions of the forward part of said frame, cushions s, Figure 2,
being inserted between the frame and the shaft. Cushions & may also be placed
beneath the frame, if desirable, to soften its downward stroke.
The paper-carrying roll, which is here shown, is of peculiar construction, the
same forming a part of this invention. This roll is composed of an inner cylindrical
section d', Figure 7, which is internally screw-threaded for a portion of its length,
and is engaged with a quick-thread screw-shaft e¹; a middle section 1, of wood or
other suitable material; surrounding section d' and adapted to turn thereon,
without rotating the latter, to feed the paper endwise, and thus form the spaces
between lines; and, lastly, an outer or inclosing section of rubber or other
suitable material, preferably of a somewhat yielding nature, to sustain the impact
of the type, although said enclosing section may be rigid, if preferred, or may have
any desired degree of yielding quality.
The inner section has its ends reduced and formed as bearings ¹³, which are
journaled in sockets formed in the swinging arms of the carriage, said arms
being mounted so as both to slide and oscillate on a guide-rod ', which is mounted
in-bearings affixed to the frame of the machine. The screw-shaft is fitted to
rotate in bearings formed in arms n' n' affixed to the guide-rod, and adapted to
oscillate so that the screw-shaft and the roll F can be raised or lowered as usual
to permit the inspection of the work.
The screw-shaft is tubular and contains a spiral spring o', one end of which is
attached to an ear p', formed on one of the arms n', while the other end is attached
to the screw-shaft by some simple means, as, for instance, a plug, inserted rigidly
in one end of the screw-shaft, said plug having a groove in one side to receive the
end of the spring, as shown in Figure 7. This arrangement of the spring gives it
a constant tendency to rotate the screw-shaft in the direction required to cause
the roll to move in the direction indicated by the arrow in Figure 7, thus
giving the paper the feed movement to form the letter and the word spaces when
the escapement is operated to release the carriage, as already described.
The spring is, of course, partially unwound during the printing of each line, but
it is rewound by the return movement of the carriage to its starting position.
This is effected on account of the thread connection between the inner section

page_text: of the roll, and the screw-shaft, causing the latter to rotate backward when the
carriage and roll are being moved back to their starting position..
1'
The section of the roll being fitted to turn independently on the section d', as
above stated, enables the periphery of the roll to be rotated to move the paper. to
form the spaces between lines without rotating said inner section, it being
obviously necessary that the inner section should remain at rest while the paper is
being moved forward, as the rotation of the inner section would cause the roll to
move endwise along the screw-shaft.
To the sections / and g¹ is secured a spur-wheels, the teeth of which are
formed to be engaged by a dog ', pivoted to a lever u', the latter being in turn
pivoted, at v¹, to one of the oscillating arms of the carriage. The dog is held by
a spring against the periphery of the spur-wheel, and, when the lever u is
depressed, said dog, by its engagement with the spur-wheel, rotates the roll Fin
the direction required to carry the paper forward to form the spaces between the
lines. represents a detent dog which is pivoted at ¹ to a projection on one of
the arms, being held by a spring in contact with the periphery of the spur-
wheel. This dog prevents loose motion or idle rotation of the roll F in either
direction, as usual in machines of this class.
By reference to Figure 8, it will be seen that the handle ends of the
respective dogs ¹ and w³ are located in close proximity to each other, so that both
may be moved simultaneously by the operator's thumb in the direction necessary to
disengage said dogs from the wheel, thus enabling the roll to be rotated freely in
either direction.
It will be seen that, by the employment of the quick-thread screw-shaft and the
inclosed motor spring therefor, arranged to be rewound by each return movement
of the carriage, the means for impelling the carriage are reduced to a compact
form, and the machine as a whole is considerably simplified.
Dated this 8th day of December 1890.
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or appertaining to Type Writing Machines.
A. communication from abroad by FRANK HENRY HARRIS, of Canandaigua,
County of Ontario, State of New York, Stenographer, CORYDON EUGENE
CRANDALL, of Canandaigua, aforesaid, Attorney at Law, PETER MESICK, of
Coxsackie Station, County of Columbia, State of New York, Paper Manu-
facturer, & ALBERT EDGERTON AYER, of Boston, County of Suffolk, State
of Massachusetts, Machinist, all in the United States of America.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors, 6, Lord Street Liverpool & 6, Bank Street, Manchester both
in the County of Lancaster, & 323 High Holborn in the County of Middlesex
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 :-
&
These improvements relate chiefly to type-writing machines of the class in
which the paper to be printed is held on a carriage moved longitudinally by
suitable mechanism, when released by the depression of the type-keys or the
spacing device.
The invention relates more particularly to the matter of forming the spaces
between words and to the construction and operation of the paper-carrying roll.
The invention is in part an attachment for a type-writing machine, applied for
the purpose of producing a word space simultaneously with the printing of the last
letter or letters of each word. This part of the invention has for its object to
provide certain improvements and mechanisms by the use of which the extra or

page_text: special movement of the hand, and the additional touch of the finger, to make a
word space after the word is printed, are avoided.
The invention is also, in part, an improved construction of the paper-carrying
roll and the mechanism for moving the carriage; all of which improved parts are
hereinafter fully described, and shown on the drawings.
:―
Referring to the drawings accompanying the Provisional Specification
Figure 1 is a rear elevation of the frame and other parts of a type-writing
machine, showing some of the improved parts attached.
Figure 2 is a side sectional elevation of parts of the machine, condensed as to
length and sectioned as on the dotted line 2 2, in Figure 1, parts being broken
away.
Figure 3 is an enlarged view of the spacing dogs and associated parts, better
showing the construction of the same.
Figure 4 is a plan of a portion of the machine showing the paper carriage and
its paper-supporting roll with the improved means for impelling the carriage
longitudinally when released by the escapement.
Figure 5 is a simple modification of the form of the keys.
Figure 6 is a plan of the lower parts of a type-writing machine, showing some
of the improved parts attached in place.
Figure 7 is a side elevation of the paper-carrying roll, partially sectioned as on
the dotted line 7 7, in Figure 4.
Figure 8 is an end elevat.on of the parts shown in Figure 4.
Figures 2, 4 and 7 are condensed as to length, and Figure 6 is drawn to a scale
somewhat larger than that to which Figures 1 and 2 are drawn.
Referring to the parts shown:
A, is the frame of a type-writing machine, which may be of any suitable con-
struction, B being the ratchet-bar and C the carriage-way rod, all substantially of
common construction. The hanger E for some of the parts and the rocker k,
spacing dogs i and, and loose-dog stop are also substantially of common con-
struction in various type-writing machines. The stop 1, for the loose dog, is
secured adjustably to the stationary dog i, by a clamping screw v, passed through a
slot w in the stop.
Within the frame A of the machine, a light tilting frame or lever D is placed,
for the purpose of word spacing, this tilting frame being held to turn on a horizontal
pivot rod a, resting in the frame A, as shown in Figures 2 and 6. The frame D
is conveniently made polygonal in form and preferably constructed to inclose the
keys of the machine.
The frame D is not connected in any way with either of the spacing dogs. The
pivot-rod a crosses the frame or lever D near the middle of the latter, said frame
acting, when used, as a lever of the first order. The form of the lever in rear of
the pivot-rod is not essential, this part serving only to be connected with parts
above it, as hereinafter explained.
At its forward end, this tilting frame or lever is provided with horizontal
touch-bars b, Figures 2 and 6, rigid with said frame or lever and forming part
thereof.
d are the keys of the machine. These are, as shown, split or divided by spaces c,
which spaces are occupied by the respective touch bars b.
Now, from this description and illustration of the parts, it will be understood
that any key may be depressed by the finger of the operator, as usual in type-
writing machines, without depressing the tilting frame. Or that, by slightly
extending the finger when the touch is made, so as to cover a touch-bar, the tilting
frame may also be depressed with the key. When a key alone is depressed to
print a single letter, one tooth of the ratchet is allowed to escape the spacing dogs.
But the device is so constructed that, when the tilting frame is depressed with the
key, two teeth of the ratchet bar will pass the dogs. This extra escapement
produces a word space between two consecutive words, the tilting frame being

page_text: depressed by the finger when depressing the key to form the last letter of
the word.
The loose dog stop, in michines heretofore made, has been set so as to arrest
the motion of the loose dog h, when the latter has advanced or swing forward to
the extent of one tooth of the ratchet bar. In the improved machine, this stop is
so adjusted that it will allow the dog to advance two teeth, and another movable
stop e is provided, to arrest the dog when it has advanced one tooth. Now, by
throwing this movable stop out of the way of the dog, this latter will swing forward
to the extent of two teeth of the rack, as shown by dotted lines in Figure 3, or,
against the stop l. This serves to allow the carriage to advance sufficiently to
form a word space after the word is printed.
The stop e, shown, is in the form of a bell crank, and held to turn in a vertical
plane upon a pivot pin f, Figures 1 and 2, said pin being secured in a bracket or
holder g.
This holder g is secured to the hanger E by a clamp screw a', passed
through a horizontal slot in the holder, which admits of a horizontal adjustment
of the latter. This adjustment admits of the stop e being shifted in directions
towards or from the loose dog h, so as to regulate the action of the latter with
reference to the teeth of the ratchet bar. By means of the adjustability of the
stop e, the loose dog may be caused to act so as to allow two (or more) teeth of the
ratchet bar to escape the dogs at once, as may be found necessary in spacing.
n is a simple bar or part connecting the tilting frame with the stop e, said bar
being secured to the tilting frame by a simple screw r. This single fastening
allows the bar n to slightly swing laterally to correspond with the adjustment of
the stop e above described. The bar n is connected with the stop e by means of a
pin c¹ passed through both, the stop entering a slit in the upper end of the bar.
By means of this connection between the stop e and the tilting frame, when the
latter is tilted, as shown in dotted lines in Figure 2. the stop will be turned
laterally at one side of or out of the way of the loose dog h, allowing the latter
to swing forward over two teeth of the ratchet bar, or against the stop, as above
stated.
The loose dog is actuated by a slender spring, Figure 3, back of the
stationary dog i, and held by the latter.
6
To illustrate the action and the use of the parts in type-writing, take, for
instance, the words, The man." When the operator is about to depress the key
to print the final letter 'e,' of the word 'The,' care is taken to extend the finger
over the touch bar b, so as to also depress the tilting frame. This operation serves
to both print the letter e and to form the proper space between the words "The '
and man'; and no further thought is given the matter of the word space. The
next act of the operator is to commence the final word 'man,' by depressing
the 'm' key.
It is not necessary that the keys or the tilting frame should be made in the exact
forms shown, as any convenient form or arrangement of the parts, in which a part
of said frame is closely associated with each key so that the frame may be
depressed or tilted with the finger when the key is depressed, will answer the
purpose of the invention.
The minor parts o of the keys may be omitted, as shown in Figure 5, as not
being absolutely essential to the invention; but they are found in practice to con-
stitute desirable rests for the end of the finger when depressing the touch-bar with
the key. Their presence renders the touch of the fingers more agreeable.
A slender spring p, connecting the rear part of the tilting frame with an
extended part of the stop e, serves to hold the tilting frame in its normal position,
shown in full lines in Figure 2. This the spring effects for the reason that its
bearing point on the stop e is farther from the pivot f of the stop than the
bearing point of the connection n is from said pivot. On this account any
upward motion of the rear part of the tilting frame will increase the distance
between the two bearing points of the spring-at e and at the hook y-and thus

page_text: increase abnormally the tension of the spring. This will cause the spring to tend
to return the frame to its normal position.
The tilting frame is below the ribbon-shift rock-shaft r, which shaft forms a
stop for the upward motions of the forward part of said frame, cushions s, Figure 2,
being inserted between the frame and the shaft. Cushions & may also be placed
beneath the frame, if desirable, to soften its downward stroke.
The paper-carrying roll, which is here shown, is of peculiar construction, the
same forming a part of this invention. This roll is composed of an inner cylindrical
section d', Figure 7, which is internally screw-threaded for a portion of its length,
and is engaged with a quick-thread screw-shaft e¹; a middle section f¹, of wood or
other suitable material; surrounding section d' and adapted to turn thereon, without
rotating the latter, to feed the paper endwise, and thus form the spaces between
lines; and, lastly, an outer or inclosing section g' of rubber or other suitable
material, preferably of a somewhat yielding nature, to sustain the impact of the
type, although said enclosing section may be rigid, if preferred, or may have any
desired degree of yielding quality.
The inner section has its ends reduced and formed as bearings '', which are
journalled in sockets formed in the swinging arms of the carriage, said. arms
being mounted so as both to slide and oscillate on a guide-rod k¹, which is mounted
in bearings affixed to the frame of the machine. The screw-shaft e¹ is fitted to
rotate in bearings formed in arms a' n' affixed to the guide-rod k¹, and adapted to
oscillate so that the screw-shaft and the roll F can be raised or lowered as usual
to permit the inspection of the work.
The screw-shaft is tubular and contains a spiral spring o', one end of which is
attached to an ear p¹, formed on one of the arms n', while the other end is attached
to the screw-shaft by some simple means, as, for instance, a plug inserted rigidly
in one end of the screw-shaft, said plug having a groove in one side to receive the
end of the spring, as shown in Figure 7. This arrangement of the spring gives it
a constant tendency to rotate the screw-shaft in the direction required to cause the
roll to move in the direction indicated by the arrow in Figure 7, thus giving the
paper the feed movement to form the letter and the word spaces when the escape-
ment is operated to release the carriage, as already described.
The spring is, of course, partially unwound during the printing of each line, but
it is rewound by the return movement of the carriage to its starting position. This
is effected on account of the thread connection between the inner section of the roll
and the screw-shaft, causing the latter to rotate backward when the carriage and
roll are being moved back to their starting position.
The section of the roll being fitted to turn independently on the section d', as
above stated, enables the periphery of the roll to be rotated to move the paper to
form the spaces between lines without rotating said inner section d, it being
obviously necessary that the inner section should remain at rest while the paper is
being moved forward, as the rotation of the inner section would cause the roll to
move end wise along the screw-shaft.
To the sections and g¹ is secured a spur-wheel s¹, the teeth of which are formed
to be engaged by a dog t¹, pivoted to a lever u', the latter being in turn pivoted at v',
to one of the oscillating arms of the carriage. The dog is held by a spring z
against the periphery of the spur-wheel, and, when the lever u' is depressed, said
dog, by its engagement with the spur-wheel, rotates the roll F in the direction
required to carry the paper forward to form the spaces between the lines.
to represents a detent dog which is pivoted at a to a projection on one of the
arms, being held by a spring in contact with the periphery of the spur-wheel.
This dog prevents loose motion or idle rotation of the roll F in either direction, as
usual in machines of this class.
By reference to Figure 8, it will be seen that the handle ends of the respective
dogs t¹ and w¹ are located in close proximity to each other, so that both may be
moved simultaneously by the operator's thumb in the direction necessary to

page_text: disengage said dogs from the wheel, thus enabling the roll to be rotated freely
in either direction.
It will be seen that, by the employment of the quick-thread screw-shaft and the
inclosed motor spring therefor, arranged to be rewound by each return movement
of the carriage, the means for impelling the carriage are reduced to a compact
form, and the machine as a whole is considerably simplified.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is:—
1. In a type-writer, the combination, with the key-board composed of a series of
substantially parallel proximate rows of keys, of finger parts operating to feed the
carriage a greater distance than said keys, and arranged in proximity to each row
of the latter, whereby any key and a finger part may be operated simultaneously
by a single movement of the operator's hand to print a letter and augment the
following spacing.
2. In combination with the keys and the loose spacing dog of a type-writing
machine, a polygonal tilting frame rigid as to its parts and disconnected from the
spacing dogs, and having parts associated with the respective rows of keys and
other parts to control the action of said dogs, substantially as and for the purpose
specified.
2.
3. In combination with the keys and the loose spacing dog of a type-writing
machine, a rigid frame disconnected from the spacing-dog, having parts associated
with the respective rows of keys, and other parts to control the action of said
spacing dog, said frame being held to turn upon a pivot rod, and acting as a lever
of the first order, substantially as described.
4. The combination, with the divided keys and loose spacing dog of a type-
writing machine, and a tilting frame having parts held within the spaces of said
divided keys, of parts connected with said tilting frame in position to arrest the
motion of said dog, substantially as shown and described.
5. The loose spacing dog and the keys of a type-writing machine, with fixed stop
and movable stop for said loose spacing dog, a tilting frame having parts associated
with the respective rows of keys, and a part connecting said frame with the
movable stop, the latter being made adjustable, substantially as shown and
described.
6. The loose spacing dog and the keys of a type-writing machine, in combination
with a fixed stop and a movable stop for the spacing dog, a rigid tilting frame
polygonal in form having parts associated with the respective rows of keys, a rigid
part connecting said frame and the movable stop, and a spring having a bearing at
one end upon said stop and at the other end upon said frame, to connect said parts,
substantially as and for the purpose set forth.
7. A paper supporting roll composed of inner and outer tubular sections, the
latter being adapted to rotate independently, the inner section having an internal
screw thread combined with a quick thread tubular screw shaft passing through
the roll, and a spring attached at one end to said shaft and at the other end to a
non rotating support, whereby said spring is caused to rotate the shaft and thereby
impel the carriage as set forth.
1
Dated this 24th day of Avost 1891
WM. P. THOMPSON & Co.,
Agents for the Applicant.