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Патент USA US2087409

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JulyV 20, 1937. l
J. F. KocA
Original Filed March 2, 1933
2 Sheets-Sheet l
July 20, 1937.
` J. F. KQCA
Original Filed March 2, 1933
2 Sheets-Sheet 2
Patented july 20, 1937
`laines F. Koca, Woodstocln‘llll., assigner to Wood
stock Typewriter Company, Woodstock, Ell., a
corporation of Illinois
Original application March 2, 1933, Serial No.
659,335. Divided and this application June 25,
1934, Serial No. 732,200
6 Claims. (Cl. IS7-_22)
This invention relates to typewriters in general, short. However, operators who are used to the
and speciñcally to means for regulating type
conventional type of machine where a long
writer keys.
stroke is used, find it inconvenient, if not awk
This application is a division of applicant’s ward, to become familiar with the new stroke.
copending application, Serial No. 659,335, filed Also, operators oi diiierent speed require a dif
March 2, 1933.
ferent key lever stroke. Therefore, if the stroke
The primary object of the present invention is of the key levers can be adjusted, the operators
to provide means of a novel character for regu
can quickly acclimate themselves to using elec
lating the stroke of the typewriter key.
tric typewriters. Also, the depression of the
Another object of the invention is to provide typewriter key lever can be adjusted to meet the l0
novel means for regulating the movement or
demands of various operators having various
the length of stroke of the key levers of electrical
strokes and speeds.
ly operated typewriters.
The means provided for changing or varying
A still further object is to provide simple and the distance the key levers travel vertically upon
l 5 eiiicient means to adjustably regulate the move
the depression of a key lever key comprises a
ment of the stroke of the key levers.
longitudinal strip t3 made of any desirable ma
Numerous other objects and advantages will be terial, but preferably sound deadening material,
apparent throughout the progress of the following such as über. The strip i3 is provided with
diagonal slots Iii which engage pins l5 project
The accompanying drawings illustrate a select
ing forwardly from a Jflange it of an angle mem
ed embodiment of the invention and the views ber il. The strip i3 is positioned between the
therein are as follows:
flange it on the angle member ll and a flange
Fig. 1 is a detail transverse sectional view of
I8 on a supporting member I9 which is fixed to
a, typewriter showing means for regulating the the main frame of the typewriter. The upper
movement of the key levers.
ilange 29 of the member il abuts the underside
Fig. 2 is a detail elevation of some of the regu
of a flange 2i of the member i9. Screws 22 pass
lating mechanism shown in Fig. 1.
through elongated slots 23 in the member ll and
Fig. 3 is a detail plan section oi the members threadedly engage the threaded holes 2i! as indi
shown in Fig. 2 on the line 3-3 of Fig. 1.
cated at 25, Fig. 1. The member Il is adapted
Fig. 4 is a detail perspective View of several for lateral slidable movement relative to the
of the parts shown in Figs. l to 3.
member E9. The member Il is provided with a
Fig. 5 is a View similar to Fig. 1 but showing turned ear 2t, Fig. 4 having a threaded opening
a modification of the means for varying the
2l to receive the threaded end 28 of a thumb
depression of the key lever stroke.'
screw 29. The thumb screw 29 is revolubly mount
Fig. 6 is. a detail plan section on the line t-S
ed in the frame it as indicated at 39, Fig. 3, Pins
of Fig. 5.
Si project inwardly from the inner face of the
Fig. '7 is a detail perspective View of several of flange i8 of the support i9 and act as a guide for
the parts comprising the depression stroke regu
the strip i3. Upon rotation of the thumb screw
lating means which are shown in Figs. 5 and 6.
29, the angle member il can be moved to- the
„ne particular typewriter herein shown by right or left, and due to the pin and slot con
way of illustration is a “Woodstock” typewriter
nection between the strip I3 and the member
and comprises a frame lil upon which key levers
i l, the strip i3 will be caused to raise or lower de
ll are arranged in the usual manner. The key pending upon the direction the screw 29 is ro
levers l l have theirrear ends operatively supported tated. The key levers Il which rest upon the
by a transverse rod (not shown) which is re
usual bottom rest, will then be located in vertical
movably supported in the sub-frame of the type
movement between the bottom rest and the bot
writer. Type bar actuators are controlled by the tom edge 32 of the strip i3. As the bottom rest is
key levers II and operate the type bars l2 ñxed, the key levers ll will be limited in their
through the intermediary of sub-levers (not vertical movement or travel by raising or lowering
the strip i3, it being understood, of course, that
In electric typewriters, that is, in typewriters the key levers H are normally spring-urged an’d
having type bars which are electrically actuated, as this spring-urging construction is well known
the depression of the key lever to cause the rotat
in the art, no description thereof will be made
ing drive shaft to operate the type bars upon de
herein. In accordance with the construction just
pression of a key lever, is relatively small or described, the operator or typist, by merely op
erating a thumb screw 29, may thus regulate
or adjust the vertical movement of the type lever
to suit his or her individual desire.
In Figs. 5 to 7 inclusive there is shown a
¿modified arrangementrof the parts for perform
ing a similar operation. In these figuresy 40
designates a strip- of sound deadening material,
such as fiber. Pins 4l project from the strip
46 and are adapted to engage diagonal slots 42
10 formed in an intermediate Vmember 43 and ver
ward movement of the levers, an upper rigid
member above the levers, a sound deadening strip
carried by the rigid member, means for shift
ing the rigid member laterally, and means asso
ciated with the rigid member and the strip for
moving Vthe strip vertically during lateral move
ment of the rigid member.
2. In a typewriter having a frame, pivotally
mounted key levers having vertical movement, a
supporting rest'for the levers to limit the down
tical slots 44 formed in the front Vflange 45 of Y ward movement of the levers, an upper rigid
a supporting member 46. The member 43 and
the strip 40 are arranged between the front
flange 45 and the rear ilange 4i of the support
ing member 46. The supporting member 46 is
ñxed to the flange l0 while the member 43'L is
adapted to have free lateral slidable movement
member above the levers, a sound .deadening strip
carried by the rigid member, a revolubly mounted
relative to the supporting member.
horizontal movement of the rigid member,
'I‘he member 43 is provided with an inturned
end 48 which is adapted to receive the threaded
end 49 of a thumbscrew 50. The thumb screw
50 has free revoluble movement relative to the
frame I0 and is provided with a thumb piece 5I
ber and strip to move the strip vertically during
3. In a typewriter having pivotally mounted
key levers and a bottom rest for said key levers, 20
a longitudinal bar above said key levers having
its underside forming a stop for engagement . i
with said key levers to vlimit the vertical move
moved laterally and due to the slot and pin con
nection between the member 43 and the strip 49,
the strip 4U will be forced to travel or be moved
vertically, the slots 44 acting as guides for the
stop vertically.
’Y fastened together in any suitable. manner, such Y
means engageable with said stop for moving said '
4. In a typewriter having pivotally mounted
key levers and a bottom rest> for said key levers,
a> longitudinal bar above said key levers having
its underside forming a stop for engagement with i
said key levers to limit the vertical movement
of said key levers, _laterally slidable means en
as by the screws 52.
gageable with said stop for moving said stopV
clusive, it can be readily seen that vertical move
vertically, and a thumb nut for shifting said
means laterally.
From the construction just
described and clearly shown’ in Figs. 5 to 'I in
ment of the key levers ll‘is restricted.
The invention provides improved eflicient
means of relatively simple construction for posi
tively varying or regulating the vertical move
ment or the Idepression of theY key levers, there
40 V'fore permitting the operator or typist to adjust or
regulate the stroke the desirable or preferred
Changes may be made in the form, construc
tion, and arrangement ofthe parts without de
parting from the spirit of the invention or sacri
rlcing any of the advantages thereof, and the
right is'hereby reserved to make all such changes
as fairly fall within the scope of the following
a slot and pin connection between the rigid mem
ment >of said key levers, and laterally v slidable ~
. The two parts, including the member 45, are
for moving the rigid member horizontally and
for rotating the screw. During rotative move
.ment of the screw 50, the member 43 will be
strip 40.
member threadedly engaging the rigid member
The invention is hereby claimed as follows:
1. In a typewriter having a frame, pivotally
5. A typewriter having a frame, key levers for
said typewriter, spaced upper and lower stop _ele
ments above and below respectively of the key
levers to limit the vertical movement of the key
levers, a member adapted to be moved laterally 40
and operatively connected to said upper stop ele
ment, and rotative means for moving said last
named member laterally, Vlateral movement of
said last named member causing vertical move
ment of the upper stopelement.
6..In a typewriter having pivotally mounted`
keylevers, an elongated bar engageable with the
key levers for limiting the movement thereof,
means including a plurality of pin and slot con- . `
nections for bodily displacing said bar to uni 50
formly vary the position of the bar with respect
to the key levers, and a single control member '
mounted key levers having vertical movement, a for controlling said means.
supporting rest for the levers to limit ythe down- '
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