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Patented Apr. 8, 1947 `
UNITED STATES PATENT OFFICE
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2,418,785
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FOLDING TYPEWRITER CONSTRUCTION l
George I. Mills, Springfield. Mo.
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Application April 9, 1945, Serial No. 587,28#
2 Claims.
(Cl. 1197-186)
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The present invention relates to the class of
portable typewriters, with particular reference
2
chine, and the latter mounted on the edge of a
supporting desk or table;
"
to typewriting machines of the folding type and
Figure 3 is a fragmentary front elevation of
in which the machine is combined with a case
the parts shown in Figure 2;
i
adapted to fold up with the machine in such a 5
Figures 4 and 5 are vertical sectional details,
manner as to completely enclose the machine.
representing sections taken on the lines 4-4 and
One of the objects of the invention is to pro
5_5, respectively, of Figure 3;
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vide a combined folding typewriter and case con
Figure 5A is a view’similar to Figure 5, but
struction in which the folding portion of the
illustrating the same parts in folded position;
machine comprises a drop key assembly adapted 10
.to swing into suspended position at the front
Figure 6 is a detail section, as indicated by thel
of the machine and is provided with a folding
section line 6_6 in Figure 2. y
case section operative in unison with the fold
The present application relates to improve
ing movements of the key assembly, a particu
ments in folding typewriter construction of the
lar purpose of the invention being to provide such
character illustrated generally in Patent No.
and
’
a relation of parts as will effect a completely
closed case structure when al1 the parts are in
1,987,230, dated January 8, 1935,-in that said
patent illustrates a folding type of construction
folded condition, while also affording ample knee
which includes a folding case section combined
.
room or clearance below the drop portion of the
with a drop key structure which swing together
machine when the same is opened up into -posi.- 20 into and out of folded relation to the main body
tion for use.
_
portion of the machine. The construction as
,Accordingly I have devised a construction of
illustrated in said patent, however, has been found
the character indicated in which the folding sec
to be defective to the extent that it fails to
tion of the case, which encloses the aforesaid drop
provide a completely enclosed construction when
key assembly, is provided with an auxiliary clo 25 the parts are folded; and moreover, the fold
sure element operative to completely close the
ing action in the patent has not proved entirely
case at the hinge joint between said folding
satisfactory as regards efficiency in the folding
section and the remainder of the case.
movement for assuring proper movement of the
,In this connection itis a further object of
parts of the key structure in unison with the fold
the invention to provide means to facilitate and 30 ing action of the corresponding folding section
guide the movement of the parts of said drop key
of the case. The present invention aims to 'over
assembly into and out of folded relation‘as said
come any such drawbacks in the construction
combination key and folding case construction is
shown in said patent, by providing a supplemental
swung into or out of its folded position,
closure means which serves to completely close
With the foregoing general objects in view the 35 all the hinge portions of the key-enclosing sec
invention will now be described with reference
tion of the case, and also providing means cof»
to the accompanying drawing illustrating one
acting with the key structure to assure all proper
form of arrangement and construction which I
operative movements thereof as well as guiding
have devised for embodying the proposed im
the same throughout all such movements.
provements, after which those features and com 40 _Referring now to the accompanying drawing in
binations deemed to be novel and patentable will
detail, a conventional form of portable and fold
be particularly set forth and claimed.
ing typewriter unit is shown, comprising a main
V In the drawing
i ~Figure 1 is a perspective view showing a fold
case portion I0 into which the'main body portion
I2 of the typewriting machine'is built, and two
ing typewriter construction of the portable type 45 folding case sections, a rear section I4 designed
and embodying the present features of improve»
to fold over the rear paper carriage portion of
the -machine, and a front section I6 which is
hingedly connected to the front of the main body
showing the folding portion of the machine car
l2 of the machine. The rear folding section I4,
rying the drop key assembly open and dropped 50 which is hinged at I8 to the main body I2 at
into operative position- at the front of the ma
the rear portion thereof, lis provided with the
ment;
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Figure 2 is an elevation, on a larger scale,
2,418,785
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usual handle 26 as well as clasps 22 for latch
ing the parts in folded or closed relation, in
which position they are locked by suitable lock
ing means as indicated at 24.
When the machine is opened for use and
mounted on a desk 26 or the like, the case section
I6, with its bank of operating keys 28, etc.,
bar 52 to move alternately into the positions illus
trated in Figure 5 and Figure 5A, respectively.
From the foregoing it will be apparent that I
have devised a practical and eiñcient construction
for fulfilling the desired objects of my invention.
In the open or operative position of the machine
the same is firmly supported and braced by the
joint abutting action of the casing I6 against
swings down into suspended relation from the
the edge of the supporting table or desk, and of
front of the main body portion I2 of the machine,
in which position the structure is also braced 10 the extension 34’ of the bracket 34 projecting
above the hinge axis into abutting engagement
and supported against the side margin of the desk
with the front base portion of the machine.
top, as illustrated in Figure 2.
When the folding section I6 is swung upward,
In the prior construction, the case section I6
through the dotted line position indicated in
was hinged' in alinement' with the pivots- 30 be
Figure 4, into fully closed position as represented
tween the drop keys 2'8‘ and the type operating
by the dotted lines in Figure 2, the auxiliary clo
bars 32, which has been found to be objectionable
sure element d8 is automatically operated to close
for the reason that when the folding case section
was swung up into closed positiomthere was: left
an open or unclosed space adjacent to said hinge
line of the folding section. In the presentV im-~
proved construction I provide a bracketY 34 for
each of the ends of the section I6, and each of
these brackets is pivoted, at 36, to the front of
the main body I2 of the> machine. Each bracket
3'4 includes' a flat extension 34.’ projecting across
the hinge axis and adapted toabut» against the
vfront ofv said bodyv I2 of the machine, when opened
for use, thereby cooperating with the abutting
actionì of the section I‘IiA> against the desk top for
supporting and. bracing; the machine: while; in 30
operation.
.
For serving as a closure. for the space> which
would otherwise bei left open at the front of the
the space at the front of the base of the machine
and above the hinge 42,
This construction enables such an arrange
mentof the operating connections to be preserved
as willV postion the keys etc. at the desired con
venient operative level and at the same time ,pro
vide more clearance below the keys, or for more
knee room than is practicable with the prior
construction.
Moreover, ity will be noted that the improved
construction includes a special, viz, the comb bar
52 and its operating connections, which provide.
a guiding and bracing function for the individual
key arms whereby a more certain and accurate
movement is assured and without any undue play
or lost motion, since-the relative movement trans
mitted to the comb bar during the folding and
main body portion I2 of the machine, I provide an
auxiliary' closure section 4I) which is' hinged, as 35 unfolding actiony of the case section I6 controls
the position of saidl key arms. and guides their,
at 42, to the front margirr of said main body
movement, while at the same time limiting their
portion andi so shaped at> the margins of said
movement to only such extent as is requiredY
section as to enclose the adjacent margins of
the foldingicas‘e section I6 when the' latter is- inv , for` the. free operative action or play of the various
its open- position» as showninFigure 2, while» also 40 parts, asfwill be seen from a comparison of the.
folded. and. unfolded positions of thev key armsV
:spanningy or enclosing the spiace between the
asv indicated in Figures 5 and. 5A.
hinge'42 and the edges of- said section I6 when
_ While I. have. illustrated and described what l'.
the' latter is in closedposition, as shown in Figure
now regard as an entirely practical and suitable
1'.. Moreover, for maintaining a1 proper coacting
form of construction for satisfactorily embodying
relationbetween said-»section I6 and theV auxiliary
my proposed. improvemental desire tobe under
closure section, the corners of said auxiliary sec
stood. as expressly reserving the right to make all
tion 4€!- (opposite its hinge) are provided with
such changes and modiiications as may fairly
pins 46 operating> in guide slots orr grooves 48
fall within the spirit and scope of my invention
extending along the outer corners of the section
as denned by the appended. claims.
i6; whereby the. auxiliary closure 40 and the
Having thusY described. my invention, what I
adjacent wall of the section. I6 are maintained
claim is:
continuously parallel or in approximately co..
1.` A combinationv folding typewriter and case
planar relation throughout.A the,y relative move-L
construction comprising, in. combination with the
ments of». said parts.
, Thearms~ of the drop keys 28 and 0i the other 55 mainbody portion of the machine, a drop key as
sembly and. a folding case section enclosing said
operating linksvâß are extended through the slots
assembly mounted on> said main body portion for
of a comb» bar or plate 52 whichis~ of angular
folding movement upon hinge means above the
cross-section and secured at each of its opposite
bottomI supporting level of the machine, key-guid
ends by> al fastening 53 tothe oiTset lower end 54
of an arm 55 (see Figures 5 and 5A) , the-opposite 60 ing, means supported on said main body portion
independently of said folding section and pro
or inner end of. which. is pivoted at 30.' to the
viding` individual. guideways for the'key arms of
framework |-2A ofv the machine (see Fig, 3)' and
said assembly, and connections actuated by the
in substantial alinement with the pivots 30 of
movement of' said folding case section for. con
thekey elements.> The saidoffset 54. oi eacharm
'âñlalso is provided with a pin 55 which rides in 85 trolling the position. of said key-guiding means
during the folding and unfolding movements of.
aninclined. slotV 58 formed in4 an. arm. SI1V ofA a
said drop key assembly.
bracket 62 attached to. the interior face of> the
2. A, combinationV folding typewriter and case
casing` section Iii. The pins iii. also serve as
construction comprising, in combination with the
fulcrums for the spacer bar 5I. which> operates
the link. 50 connected with the spacing mecha 70 mainbody portion of the machine, adrop key as
sembly and a folding case section enclosing said.
nisrn.,v Moreover, by means of the pins 5E being
assembly mounted on said main body portion. for
continuously engaged. and operatedy by the. slots
folding> movement upon hinge means. above `the
58, the comb bar 5,2- is automatically actuated
bottom supporting level of the machine, key guid-`
in response tothe opening and closingl movements
of they swingingcases’ectiori` I.6„»fo’r causing. said 75 ing meanscomprising- a bar. mountedon said main;
2,418,785
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body portion for movement about a. different axis
~UNITED STATES PATENTS
from that of said folding case section and formed
with individual guide slots for the key arms of
Number
Name
Date
said assembly, and pin and slot connections be
Tucker __________ _- Apr. 10, 1917
1,222,497
tween said bar and folding case section and 5
DeClamecy __` ______ __ Aug. 5, 1919
1,311,879
actuated by the movement of the latter for con
H’Doubler et al ..... _- Jan. 8, 1935
trolling the position of said key guiding means.
1,987,230
FOREIGN PATENTS
GEORGE I. MILLS.
Number
REFERENCES CITED I
The following references are of record in the
ñle of this patent:
23,334
Country
Date
Swiss ____________________ _.. 1902
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