Improvements in Type-writing Machines.-WRITING
Year: 1890

page_text: Date of Application, 26th Sept., 1890-Accepted, 10th Jan., 1891
CUBE LETE SPECIFICATION.
Improvements in Type-writing Machines.
We, CHARLES ALBERT CONKLE, Clerk, of 800 Marshall Street, and JOHN AUSTEN
MCCULLOCH, Mechanical Engineer, of 3501 North Seventeenth Street both citizens of
the United States and residing at the City of Philadelphia, in the County of
Philadelphia and State of Pennsylvania, do hereby declare the nature of our inven-
tion for IMPROVEMENTS IN TYPE-WRITING MACHINES, and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statements :-
Our invention in general relates to that class of type-writing machines having
finger keys adapted to alternately and successively actuate two type connected with a
single bar or rod to cause an impression to be made by the shifting movement of the
type-block constructed and arranged in the manner to be hereinafter particularly
described.
The principal object of our invention is to provide simple, inexpensive and
durable mechanism to cause each finger key to alternately and successively actuate
two type.
Our invention consists of a compound type-bar, the same comprising a type-bar
provided with journals, a rock-shaft provided with a crank and pivotally supported in
the journals and a type-block attached to said rock-shaft and having two printing
surfaces at intersecting planes.
Our invention further consists of type-blocks having printing surfaces in inter-
secting planes and attached respectively to a rock-shaft provided with cranks and
pivotally mounted on the type-bars and means for actuating said cranks and rotating
said rock-shaft and type-blocks.
Our invention further consists of a slotted ring or cap piece susceptible of being
rotated and located above the basket of type and adapted to rotate the cranks attached
to the rock-shaft carrying the type-blocks.
And our invention further consists in the combination of the compound type-bar,
the slotted ring or cap and means for actuating the type-bar and ring as is hereinafter
more fully described.
The nature and characteristic features of our invention will be more particularly
understood from the following description taken in connection with the accompanying
drawings forming part hereof; and in which
Figure 1, is a top or plan view of a portion of a basket of type showing a compound
type-bar, a slotted ring or cap superposed upon said basket of type and also showing
means for rotating said ring or cap in order to turn the type-blocks.
Fig. 2, is a vertical section showing a type-block attached to one extremity of a
rock-shaft and engaging in a slot formed in a ring or cap susceptible of being rotated
in order to turn the type-block and also a key and toggle-joint for throwing the type
against the paper.
Fig. 3, is a section on the line x x of Fig. 2 showing the position of the parts
of a compound type-bar and especially of the type-block, when contacting with the
paper.
Fig. 4, is a top or plan view of a compound type-bar detached or removed from
the basket of type and embodying a modified form of our invention and also showing
the type-block attached to a rock-shaft journaled in the type-bar and pivotally
supported in a cavity or recess formed in the extremity of said type-bar.
Fig. 5 is an elevation of Fig. 4, showing a portion of the device for pivotally
supporting the type-bar removed and also showing the type-block adjustably supported
in a cavity or recess formed in the extremity of said bar.
Fig. 6 is an end elevation of Fig. 5.
Fig. 7 is a detached view of the type-block showing the printing faces thereof

page_text: located at intersecting planes and also showing the lower rounded or curved surface
thereof.
Fig. 8 is side elevations of the extremity of the type-bar showing a recess formed
therein for the reception of the type-block also the journal for supporting the rock-
shaft to which the type-block is attached.
Fig. 9 is an end elevation thereof; and
Fig. 10 is a top or plan view of Fig. 8.
In the drawings A, is a portion of the upper plate of a type-writing machine having
a central circular aperture formed therein, for the reception of the basket of type.
A' is a lever pivotally attached at one extremity to the housing of the machine and
provided at the opposite extremity with a finger-key A². C (Fig. 4) is a bifurcated
bearing provided with apertures 2 and 3, and adapted for the reception of a type-bar.
These bearings C, constituting the top of the basket of type, are arranged around the
periphery of the circular aperture formed in the plate A, and are secured to place by
means of set-screws c¹. D (Figs. 1, 2, 3, 4 and 5), is a type-bar provided with
bearings d and d¹ for the rock-shaft E, and with an outwardly arranged lug d³,
provided with an opening d³, for the reception of the link D', for actuating said type-
bar. The type-bar D, is pivotally attached to the bifurcated bearing C, by means of
a pin or pivots d², engaging in the openings c² and c³, as illustrated in Figs. 1, 2, 4
and 5. D is a link pivotally attached to one extremity thereof to the lever A', and
at the opposite extremity to the outwardly arranged lug d³, so that when the finger-
key A², is struck or otherwise depressed the type-bar will be elevated as shown in
Figs. 1 and 2.
e,
E is a rock-shaft journaled in the bearings d, and d' and provided with a crank e.
F is a type-block having printing surfaces f and f¹, located at intersecting planes.
This type-block F, is attached to the shaft E, and is located at or near the extremity
of the type-bar D. G is a ring or cap provided with a slot g, for engaging the
crank of the rock-shaft E. This ring G, is superposed upon the basket of type and
is attached to the plate A, by means of screws g¹, passing through circular slots g²,
formed at suitable points in the edge of the cap or ring, so that the ring G, is
susceptible of being rotated about a central point of the basket of type as a centre and
the rotary motion of the ring or cap G, is limited or controlled by length of the
slots g², as will be readily understood.
H is a link attached to the ring G, and to a cord band or belt h, passing over a
pulley h', and adapted to be shifted by means of a key lever A¹. A bell-crank lever
and link may, if desired, be employed instead of a cord, but preference is given to
the employment of a cord, because it is more positive in action. S is a spiral or other
suitable spring for returning the ring G, to its normal position when the link H, is
released. It will be readily understood that the motion of the ring G, turns the
crank e, and with it the shaft E, and type-block F, while at the same time the cranks e,
sliding freely in the slots afford the type-bar D, a freedom of motion about the
bifurcated bearing C.
In use the two printing surfaces of the type-blocks F, are provided with different
characters, for example, with a capital letter "E" and with a small letter "e" so that
the operator by striking the key A², causes a small letter "e" to be printed upon the
paper carried by the paper cylinder mounted upon a suitable carriage not shown, and
when the operator wishes to print a capital letter "E" he accomplishes this result by
depressing the key, which actuates the ring G, whereby the latter is shifted and the
type-blocks are rotated and elevated while the ring G, is held in such position. A
sinall letter "e "is brought into contact with the paper and printed as soon as the key
which actuates the ring G, is released and the spring S, returns the latter to its normal
position.
Although the above description has been confined to one type-bar, still it will be
obvious to those skilled in the art to which the invention relates that the keyboard
may be arranged to form an upper and lower case in the usual or in any preferred
manner by providing each type-bar with two characters.
The construction and operation of the modification of the invention, illustrated in

page_text: Figs. 4, 5, 6, 7, 8 and 9, are the same as that above described with reference to
Figs. 1, 2 and 3, with the following exceptions.
The lower portion of the type-block F, is of circular form (Fig. 8) and the
extremity of the type-bar D, is provided with a circular concavity adapted for the
reception of the convex portions of the type-block F, so that the latter is easily turned
in the manner above described, while at the same time it is supported so as to prevent
injury due to impact against the paper cylinder.
Having thus described the nature and objects of our invention, what we claim as
new and desire to secure by Letters Patent is :-
1. The combination, in a type-writing machine, of a compound type-bar as
described, a slotted ring or cap and means for actuating said type-bar and ring,
substantially as and for the purposes set forth.
2. The combination, in a type-writing machine, of a type-bar provided with journals,
a rock-shaft provided with a crank supported in said journals, a type-block having two
printing surfaces attached to said rock-shaft and means for rotating said crank and
actuating said type-bar, substantially as and for the purposes set forth.
3. The combination, in a type-writing machine, of a type-bar having a recess
formed therein, a rock-shaft provided with a crank and pivotally attached to said type-
bar, a type-block attached to said shaft and fitting into said cavity and means for
actuating said type-bar and rock-shaft, substantially as and for the purposes set
forth.
4. The combination, of a pivotally supported type-bar, a rock-shaft pivotally
attached to said type-bar and provided with a crank, a type-block attached to said
rock-shaft, a slotted ring engaging said crank, and means for shifting said ring and
actuating said type-bar, substantially as and for the purposes set forth.
5. The combination, of pivotally supported type-bars, finger-keys for actuating the
same, rock-shafts pivotally attached to each of said type-bars and provided with cranks,
type-blocks having two printing surfaces and attached to said rock-shafts, a ring
baving slots engaging said cranks and a finger-key for shifting said ring, substantially
as and for the purposes set forth.
6. The combination, of pivotally supported type-bars, finger-keys, links attached to
said keys and type-bars, rock-shafts pivotally attached to said type-bars, cranks
attached to said rock-shafts, a slotted ring engaging said cranks, a finger-key, a cord,
pulley and link attached thereto and to said slotted ring for shifting said ring,
substantially as and for the purposes set forth.
7. The herein described compound type-bar comprising a type-bar provided with
journals and a toggle-joint, a rock-shaft provided with a type-block having two
printing surfaces, a crank and a slotted ring, substantially as and for the purposes set
forth.
8. The herein described compound type-bar comprising a type-bar having a recess
and a toggle-joint, a rock-shaft pivoted thereto, a crank attached to said rock-shaft, a
type-block adjustably supported in said recess and attached to said rock-shaft and
means for actuating said crank, substantially as and for the purposes set forth.
9. The combination, in a type-writing machine, of type-blocks having printing
surfaces at two intersecting planes and means, substantially as described, for actuating
the same, as and for the purposes set forth.
10. The combination, in a type-writing machine, of a type-block provided with a
curved surface and two printing faces, a recessed type-bar and means for actuating
aid block and bar, substantially as and for the purposes set forth.
Dated this 16th day of September A.D. 1890
CHARLES ALBERT CONKLE.
JNO. AUSTEN MCCULLOCH.
W. P. Thompson & Boult,
Agents for the Applicants.