Improvements in Type-writing Machines.
Year: 1897

page_text: Date of Application, 2nd Feb., 1897-Accepted, 17th Apr., 1897
Improvements in Type-writing Machines.
I, BURNHAM Coos STICKNEY, of No. 151 Jefferson Avenue, in the City of
Elizabeth, County of Union and State of New Jersey, in the United States of
America, Inventor, 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 :—
My invention relates more particularly to that class of type-writing machines
in which there is employed, in connection with the type-mechanism, the paper-
carriage, and its escapement or feed-mechanism, a tripping means or detaching
device arranged at some point between the finger-piece or key and the type, by
which both the type and feed mechanisms are released after the initial depression
of the finger-piece or key, so that both may return to their normal positions
independently and in advance of the finger-piece or key, or while the finger-piece
or key is depressed or held down, whereby another finger-piece or key may be
actuated without waiting for the removal of the finger first employed and the
return of the previously depressed finger-piece or key.
My invention consists in the features of construction and combinations of devices
hereinafter more fully described and particularly pointed out in the appended
claims.
In the accompanying drawings,
Figure 1 is a vertical longitudinal section of a type-writing machine embodying
my present improvements;
Figure 2 shows the positions assumed by the parts when the type-bar and its
associated mechanism have returned to their normal positions, the finger-key being
still in its depressed position ;
Figure 3 is a vertical longitudinal section on a larger scale and in slightly
modified form, showing the position of the parts just after the tripping act has
taken place, the type-bar being in its printing position, and the key in its depressed
position; and
Figure 4 is a horizontal section taking at the line ZZ of Figure 3, looking in
the direction of the arrow, and showing a portion of the key-levers broken away.
In the several views the same parts will be found designated by the same
numerals of reference.
1 designates the frame-work of the machine, 2 the top plate or type-ring, 3 the
type-bars, 4 the connecting-rods, and 5 the usual power-driven paper-carriage.
The paper-carriage is provided with a feed-rack 6, with, which co-operates a
spacing-dog 7 and a detaining-dog 8, mounted upon a trunnion or rocker 9, held
by a bracket 10 and actuated by a link 11 connected at its lower end to an arm 12,
secured to a transverse rock-shaft 13, mounted in the base of the machine at 14,
and provided on each side with forwardly extending arms 15, the front ends of
which are united by a universal-bar 16, extending transversely of the machine
parallel with said rock-shaft 13, and arranged beneath a series of levers 17,
pivoted at their forward ends to a transverse fulcrum-rod 18, and having uniform
motion. The connecting-rods 4 incline inwardly, and their lower ends terminate
in a line transversely of the machine, and are pivoted at 19 to the levers 17 in
rear of the fulcrum-rod 18.
The escapement or spacing mechanism may be of any usual or suitable
construction. A spring 20 is provided to return the universal-bar of the spacing-
mechanism to normal position after releasement, as will presently appear.
Above the levers 17 are arranged key-levers 21, pivoted at their rear ends to a

page_text: transverse falorum-rod 22, provided at their forward ends with keys 23, and
bearing between their ends pivoted trips 24. Springs 25 are provided, to return
the key-levers to normal position upon being relieved from finger-pressure.
The trip 24 is pivoted to the key-lever at a point 26 in rear of the center of the
machine (considered transversely), and is provided with an arm or lug 27, which
normally and during the descent of the key-lever bears against a pin 28 upon the
key-lever, being at this time held against said pin by the pressure of spring 29
arranged between the key-lever and the trip. The lower end of the trip is
arranged to bear upon the rear end of the type-bar-operating lever 17, to actuate
and release the same and its connected type-bar and the universal-bar. A pad 30
is provided beneath the key-levers to arrest their motion after releasement of the
type-bars.
In operation, when a key-lever 21 is depressed, the trip 24 bears down upon the
rear end of lever 17, depressing it and carrying down its associated connecting-
rod 4, vibrating the type-bar 3 towards the platen. During its depression the
lever 17 forces down the universal-bar 16, depressing the arms 15, rocking the
shaft 13, vibrating the arm 12 upwardly, and through the link 11 actuating
the feed-mechanism. Through the feed-mechanism described or any other
suitable feed-mechanism, the carriage is fed the necessary lotter-space distances as
the impressions are made.
At a predetermined time the lever 17 and its associated type-bar, together with
the universal-bar 16 and the feed-mechanism, are released from the control of the
key-lever and returned to their normal positions independently and in advance of
said key-lever, all as will now be more specifically described.
During said actuation of lever 17 by trip 24, the latter moves rigidly with the
lever 21, being held against the stop 28 on said lever by the spring 29. The
active lower end of the depending trip 24 therefore moves in a path described by
an arc of a circle drawn from the pivot 22 as a center, as indicated by the dotted
line a, while the rear contacting end of the lever 17 moves in a path described
by an arc of a circle drawn from its pivot 18 as a center, as indicated by the dotted
line b. It will be seen that these arcs diverge, and intersect each other, and this
point of intersection represents the point of disengagement between the trip and
the lever 17, and which occurs just before the type strikes the paper on the platen.
By reason of such divergence and intersection, the trip 24 slides off of the
lever 17, after depressing it, and thereby releases the same (Fig. 3) and permits
it, together with its associated type-bar and the universal-bar and spacing
mechanism, to resume their normal positions independently of the key-lever 21,
which is still depressed, as shown at Fig. 2, whereupon other key-levers may be
manipulated without relieving the first key-lever from finger pressure.
Upon relieving the key-lever 21 fron pressure, it resumes its initial position
under the return pressure of spring 25, during which motion the trip 24 rides
along the end of lever 17, and vibrates independently on its own pivot against the
tension of the spring 29; and upon rising above said end of lever 17 it vibrates
forwardly under pressure of spring 29 and resumes its initial position, with the lug
resting against the stop 28, as shown at Fig. 1.
It will be seen that the top and bottom edges of the lever 17 in Figures 1 and 2
are parallel for the entire length of the lever, and that the trips are formed with
jogs or shoulders at their lower active ends, while at Fig. 3 the lever 17 is beveled
at its rear end, and the lower end of the trip is parallel-sided; but these
differences are not material so far as my present improvements are concerned, since
I do not wish to be limited in any wise to any peculiarity of construction or form
of either the lever or the trip not specifically set forth in the claims.
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 type-writing machine, the combination with a type-bar of a type-bar

page_text: operating lever connected thereto, and a key-lever carrying a vibratory trip and a
stop and a spring, the said trip in the descent of said lever being held rigidly by
said spring and stop and contacting with said type-bar-operating lever, and the
said trip also vibrating in an are about the pivot of the said key-lever, until by
divergence it parts company with said type-bar-operating lever, substantially as
Bet forth.
2. In a type-writing machine, the combination with a type-bar of a lever for
operating the same, and a key-lever carrying a pivoted trip adapted to actuate the
type-bar operating lever and to detach itself therefrom by divergence, and means
for holding said pivoted trip rigid during the time it is actuating said type-bar-
operating lever and detaching itself therefrom, substantially as set forth.
3. In a type-writing machine, the combination of a type bar, a lever connected
thereto, and a key-lever, the said key-lever and the said type-bar-lever having
each separate fulcrums, and the key-lever having a part adapted to contact with
the type-bar-lever, the said part and the said type-bar-lever vibrating in aros
which intersect each other, and the said part separating from said lever in the
downward movement at the point of intersection of said arcs, substantially as set
forth.
4. In a type-writing machine, the combination of a lever connected to a type-
bar, a key-lever having a trip jointed thereto and adapted to bear at one end upon
said type-bar-lever, the said trip being held rigidly during the downward move-
ment of the key-lever and operating to depress the type-bar lever and to slide
along and off the same, whereby the type-bar and its associated lever may raturn
to normal position independently and in advance of the key-lever, and whereby
daring the return of the key-lever to its normal position said trip may vibrate and
resume its proper position relatively to the type-bar-lever, substantially, as set
forth.
5. In a type-writing machine, the combination with a circular serios of type-
bars of a series of rods attached at one end to the type-bars and at the other onl
to a series of operating levers, the lower ends of the rods being arranged in a
straight line, and a series of key-levers separably connected to sail type-bar-
operating levers, substantially as set forth.
6. In a type-writing machine, the combination with a circular series of type-
bars of a series of rods depending therefrom and terminating in line transversely
of the machine and connected at their lower ends to a series of operating-levers
pivoted at one end and having uniform motion, a series of key-levers, and a series
of trips between the key-levers and the type-bar-operating levers, substantially as
set forth.
7. In a type-writing machine, the combination with a circular series of type-
bars of a series of rods depending therefrom and terminating in line transversely
of the machine and connected at their lower ends to a series of operating-levers
pivoted at one end and having uniform motion, a universal-bar of the spacing
mechanism adapted to be actuated by said levers, a series of key-levers, and a
series of trips between the key-lovers and the type-bar-operating levers,
substantially as set forth.
8. In a type-writing machine, the combination with a circular series of type-
bars of a series of rods depending therefrom and terminating in-line transversely
of the machine and connected at their lower ends to a series of operating levers
pivoted at one end and having uniform motion, a series of key-levers, a series of
pivoted trips between the key-levers and the type-bar-operating levers, and means
for holding the trips rigidly upon their levers during the releasement of the
type-bar-operating levers from the key-levers, substantially as set forth.
D1 L
لي
1907
FELL & JAMES,
Agents for the Applicant.