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Патент USA US2412891

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De_c. '17, 1946.
2,412,891 '
Filed Jan. 26, 1946‘
615mm’ 5 Ai’nzowc
Patented Dec. 17, 01946 ‘
Frank s. Kralovic, fauna, oiiie
Application January 26, 1946, Serial No; 643,637
8 claims; (01. 222-110)‘
My invention pertains to a portable,- domestic
Figure 5 is a similarly enlarged, foot-entering
handicraft appliance, exempli?edly, to a sewing
(darning or cross-stitching) stand.
end view as an elevation of the entire appliance.
Figure 6_is a plan section viewed on line 6-5
Long experience in the metal manufacturing
of Figure 5.
business has brought me knowledge of earlier
‘ A base ‘I carries laterally upstanding ?anges
2_ each _of which is provided- a short distance
above the plate I and ‘somewhat nearer one end
with a hole 3 intended for the reception of one
adjustable pedestals, footerest-stabilized sup
ports and that surmounted trays are also old.
However, while my appliance comprises several
structural features, each by itself old, it also
of a pair of pivotal connections between the
advantageously correlates‘the function of one 10 spaced flanges 2 and the lateral edges of a rock-1
trayed, for instance,- by domesticlpatents, No.
able pedal; Each pivotal connection is contrived
by provision of a lug suitably carried by one _of
the flanges 2', projecting downwardly partially
across- the opening or hole 3 where it is located
and terminating as a ser‘iii-dircular lower edge 4
adapted to guide the turning movement of a
semi-cylindricalsocket 5 which is‘formed as _a
laterally projecting ear projecting through a hole
3, the pair of socket-forming ears 5 being in
152,883 of 1874 to Tunis; No. 756,723 of 1904 to 20
tegrall‘y fashioriedfalongi opposite lateral edges
Skoog; No; 11958118], _of 1926, to Pomeroy et a1.
of-a stepped pedal comprising a depressed heel
end 6, ‘a separating shoulder ‘l and a relatively
novel feature, an arm, optionally padded on its
_ lower. side, forclamping a work piece (textile
fabric and/or its spanning, frame) against the
top of the user’s knee-directly with an old (ad—
justment) feature and. indirectly with another
old (foot-rest) feature whereby to achieve a new
and useful, indeed, improving combination.
The discoverable prior patented art, as por
and No. 2,097,000 of 1937 to Smoot—- is believed
to be‘inadequately anticipatory, even collectively,
raised toe end 8'._ A rocking action at the ankle
because the substitution of a feature or features
of the user is’ to be communicated into a- rocking
of any one to another would not achieve my 25 act-ion of the pedal to cause the ear-sockets to
organization of parts nor becapable of- exercising
the desirable function of facility of application
turn with respectto the inter?tted lug edges 4.
to suit the varying measurements from the top of
the knee to the sole of the foot of different users.
countergfyo'rce exerted by a pair of compression
springs 9’ interposed between the base plate I
and that end of the toe end ofxthe pedal which is
adjacent to the shoulder 1. Depending from the
Thereby is. declared the primary object of my
A depression of the heel end» 6 overcomes the
origination, besides its purpose of clamping
against the human knee top while mindful of
free end _of the toe section 8 is a stop I0.‘ ‘
simplicity and economy of manufacture.»
The bifurcated lowermends’ II and I2 of a
It is to be understood, upon future considera
pedestal are spaced, to fit inwardly adjacent to
tion, that the scope of my invention compre-' 35 the ?anges 2 (the toe end of the pedal, as: clearly
hends many equivalent constructions. The
shown in“ Figure 6, being narrowed to permit
showing of the drawing and the speci?c descrip-‘
clearance) where they are detachably secured,
tion‘are. intended merely to evidence one feasible
as by means of screws I3. About midway of its
mechanical embodiment and arrangement of- my
Adverting to the drawing: ‘
Figure 1 is a side elevation; of my appliance‘
showing the manner of its‘use in association with
a lower leg? of- a-user,
length,- the“ pedestal is uni?ed, a rivet 114 being
shown _at the junction point‘ of the ends H and
i2 while the remainder of ‘the upper'ends- may
‘be considered as» spot-welded together to form
the'unit numbered’ I5.‘ A tapped hole It, ex
tends'Tfrom the upper extremity of the unit l5 and
Figure 2 illustrates: a “knock-down” arrange 45, is intended for a screw _orwin'gnut ll- adapted
ment of? the composite parts, showing- ready in
to‘, secure a tray l8 which during the sewing use
ter?tting in a minimum of space preparatory to
of my appliance is to serve for holding miscel
laneous sewing or mending accessories; _
Figure 3‘ is a top plan view of an adjustably
_An arm or bracket is vertically adjustable
co‘acting structure which. is itself an assembly.
50 along the unit‘ l5 and has its ‘main- body formed
Figure 4 is an enlarged elevation of-_ the lower
(as exempli?ed) of a single strip of metal», in
end of my appliance as it appears with the near
cluding mid’sections‘ l9 and, 20~which1 are‘ in’ con
enclosing wall removed (broken away) and show
forming contacts, oppositely directed free end
ing, in broken‘ lines,‘ a pedal-actuated displace
merit‘ ofanother movably connected portion.
?anges 21 and- 2-2‘ and at‘ the pedestal-attaching
55 end spread apart to form a channel 23 suited to
a loose insertion of the unit l5 and provided
with a loop-closing end 24 having a tapped hole
for the reception of a set screw, shown as a wing
said member and extending over said shoulder,
said arm being adapted ?rmly to engage the top
of the knee of the user upon release of said
nut 25. The construction just described is most
clearly illustrated in Figure 3, and it is to be
3. A portable sewing appliance comprising, the
understood that the sections l9 and 20 and the
free ends 2| and 22 are securely a?ixed to each
combination of an arm having an end adapted
to contact the knee-top of the user, a rigid up
' right member supporting said arm, a floor plate
other in pairs as, for instance, by spot-welding.
Manifest will be that depending, upon the con:
secured to the, lower end of said-member and a
trol provided by the wingnut 25, the arm‘tmay, be 10 pedal reactingly supportedv onisaidiplatefor rais
slid to any desired elevation and there ?xed to
ing the lower leg of the user toward said arm.
the pedestal. As may be observed upon inspec-H
4..In combination, an arm having a free end
tion of Figure 5, the ?anges 2| and 22 are curved
‘ adapted to contact the knee-top of the user, an
slightly downwardly and attached to the lower - upright member adjustably supporting the other‘
sides thereof is a strip of felt or other padding
end of saidarm, a ?oor plate detachablysecured
26 with consideration of the intention to‘ have
to the lower end of said member, a pedal rock
effected there a pressure engagement with the V >
top of the knee of the user of my appliance and
nected on one side of said rockable connection
axis and adapted to move the near end of said
preparatory to clamping therebetween a piece of
fabric or an apparel article 21.
The operation or use of my appliance is as fol~
vably connected with said plate and a spring con
pedal away from said plate whereby to raise the
knee of the pedal-operating leg of a user against
said arm.
The pedestal is brought into position in front
5. In combination, an‘ arm having a free end
adapted to contact the knee-top of a user, an
of a seated person intending to employ it- and so
that, as shown in Figure 1, one foot rests upon
the pedal with the heel and sole of a shoe in ‘con
tact with the sections 5 and 8 respectively, the
lower leg being in a substantially upright posi
tion. Next, the wingnut 25 is loosened and the
upright member supporting the other end ‘of
said arm, a base secured to the lower end of said
member, a pedal pivotally connected intermee
diately of its ends with, and adapted to rock on,
said base and a spring connected between one
‘end of ‘said ‘pedal andsaid base and subject to
pedal depression for power storage thereof
khee-top-contactable arm is adjusted to and
?xed at a. selectable elevation. The determina
tion of the elevation is thus accomplished. While
whereby release of foot pressure is adapted to clamp material being sewn ormended. between
the heel of the user's shoe temporarily depresses
the section 6 against the action of the springs 9,
the padded ?ange unit 21-22 is adjusted so that
it slightly clears the knee top, then the mate
the user’s knee and said ‘arm.
rial 21, upon which some needle-work is to be
upright member adjustably supporting the other
end of said arm, a floor plate attached to the
performed, is inserted between the knee top and
the padding preparatory to foot-pressure release
of thepedal. The rising action of, the section
6, as urged by the springs, is permitted to raise
the leg and to bring the knee-top into ?rm yet
lower end of said member and provided with lat
4-0 eral upstanding ?anges, a pedal pivotally mount
ed on said ?anges and a spring ?tted between said
plate and pedal on one side of its pivot axis, the
arrangement limiting the range of rockable’
movement upon release of spring-overcoming
foot pressure upon one end of said pedal after the
spring served to raise the user’s knee toward the
comfortalble pressure-engagement with the pad
ding while the material 21 is held clamped there
between against displacements which have hith
erto been so troublesome.
Meanwhile; such a
convenient and advantageous clamping action is
free end of said arm for clamping a workpiece
effected without expenditure of any muscular en
ergy on the part of the user.
» The knock-down arrangement shown in Fig
ure 2, to make possible a packaging in an inter
?tted relationship of the several parts to achieve
a maximum of compactness, illustrates how the
detached pedestal proper may be laid within the
con?nes of the ?anges 2, with the tray l8 and‘
arm 2|—22 also deposited therein.
I claim:
6. In combination, a rigid arm having a free
end for contact with the knee-top of auser, an
7. A portable, handicraft appliance comprising
the combination of an upright pedestal provided
at its upper end with means for detachably sup
porting a tray and having its lower end formed
as a base, a pedal'rockably connected with said
base'and carrying a stop adapted to engage said
base and a spring connecting said pedal and base
and tending to hold said stop against the latter,
an arm adjustably connected with, for movement
along, said pedestaLsthe lower side‘ of "said arm
1. In combination, a handicraft appliance
being adapted to clamp a work piece against the
comprising a base, an upright member detach
ably connected with said base, an arm detach 60 top of the knee of the user’s leg which, while
ably connected with said-member, said member
and arm being adapted in'disassembled- arrange
ment for deposition along‘ said base for compact
resting upon said pedal, is ‘urged upwardlyrjby
the said spring until said stop contacts said'base.
8. A portable manualélabor aid comprising the
ness in shipping, and-aspring-controlled pedal
combination of‘ an upright member provided’ at
reactingly rockable on said base for alternatively’ 65 its upper end with means for supporting a tray
urging a user’s leg upwardly until its knee en'
for instruments and supplies and having'its lower
gages said arm.
2. The combination in a portable sewing ap
pliance, of a base structure, a pedal rockably con
nected with said base'and fashioned with a rela
tively raised section forming a heel-front engag
ing shoulder, a spring normally urging said shoul
der upwardly, an upright member connected with
said base and an arm adjustably connected with
end formed as a base intended to restupon a
?oor, an arm adjustably connected with, for
movement along, said member and reacting
70 mechanism including a, pedal pivotally connected
with said base and adapted to raise the pedal
depressing user’s legragainst said arm.
' " 5 FRANK s. KRALovIc.
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