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Патент USA US2408607

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Oct. l, 1946.
-T. B. BRlcKsoN
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2,408,604
GRUTCH
Filed Nçv. 22, 1944
s 'sheets-sheet 1
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THe/14456. ßEICKSO/Y
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Oct- 1, 1946.
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T. B. ERICKSON
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`2,408,604
GRUTCH .»
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Filed Nov. 22, 1944
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/A/VENTOR
THOMAS ßßß/CKSON y
ocr. 1, '1946.
ç
T', B. BRICKSQN
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2,408,604
CRUTCH l
vFiled Nov. >22, 1944
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s sheets-'sheet 3
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ATToRNEYs‘ _
Patented Oct. 1, .1946
~ 2,408,604
UNITED sTATEs PATENT OFFICE
i .Thomas B. Brickson, Hollywoodrßalif., as'sîgiio'r ,
to A1 R; Brooks, Los Angeles, Calif.
Appneetion November 22, 1944', serial N6. 564,565
17 Claims.
1
2
This invention relates to new and useful im- 1 l .îolts,l and by the useof which the operation of
provements in crutches and more particularly to
walking or moving about is much less fatiguing to
crutches of the foldable type.v
g
Crutches as now commonly constructed are ex
tremely awkward to handle at times, as, for eX
ample, when getting in and out of an automobile,
the user.
. A further object is to provide a foldable crutch
comprising upper and lower sections pivoted to
gether intermediate the ends of the crutch, and
because of their rigidity and length. Crutches
the pivotal connection between said sections being
of conventional design such as now in common
so constructed that Iwhen in locked oroperative
use do not >aiforcl rthe utmost in comfort to> the
condition, the two crutch sections are securely
individual using them, iirst, because the inherent 10 locked together to provide in effect, a unitary
design of such crutches makes it necessary that
crutch- structure, and means being provided in
substantially the entire weight of the body to be
connection with said >pivotal joint whereby the
joint maybe quickly manipulated with one hand
carried thereon is usually; transmitted to _the
crutches through the muscles of the users’ arms;
to permit the upper section of the crutch to be
and secondly, their rigidity has a tendency to 15 folded y downwardly `into inoperative position
impart shocks and jolts to the body when walk
along-sideithe lower section, thereby to reduce
ing, which may be very unpleasant-and tiring
the over-al1 length of the crutch for storage pur
poses, and also whereby the crutch may, if cle
sired, be used as a‘cane.
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.
The novel crutch herein disclosed 'is the result
of considerable development and experimental 20 A further object isI to provide a crutch compris
work in an endeavor to provide a crutch in which .I
ing upper and lower sections pivotally connected
together andhaving a hand grip extending lat
all of the objectionable features now present in
erally therefrom and forminga part of the piv
conventional crutchesrha've been entirelyV elim
inated,> and whereby a crutch is provided which
otal connection between the two crutch sections,
offers the utmost in comfort and safety to the 25 and a portion of said grip beingv conveniently op
erablev by the' user’s hand to release' the pivotal
user. Its construction and shapev are'lsuch as to
provide a resilient support for the body, and also
connection between the two sections whereby the
upper section may be *foldedy downwardly into in
whereby the major portion of the weight of the
operative position, and also whereby the 'upper
' body which is carried on the crutches may be
borne by the bones of the arms, in that the arms 30 section may be as quickly swung into its extended
or operative position and secured in such position
may be held- substantially straight, whereas in
by the use of one hand’only.
a conventional crutch the rarms must be held in
A further object is to provide a crutch compris
a more or less bowed or bent condition because
ing two sections joinedk together intermediate the
of the construction of the upper portion of the
Crutchwhereby the muscles of the arms must 35 ends of the crutch, and the upper section being
disposed atan incline to the lower section where
carry the major portion of the load.
by the weight is transmitted to the lower section
The design'of the novel crutch herein disclosed,
ata slight angle to the axis thereof, thereby caus
and the resiliency of the lower section thereof, is
ingthe lower sectionsto slightly flex or yield each
such that the crutch creates a “springy action,”
to theuser.
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when the weight of the body is imposed on the 40 time the weight of the body is imposed thereon,
with the result the crutch readily absorbs shocks
crutch and the user thrusts his body forwardly,
as when walking, which hasA been found togreatly
and jolts which otherwise would be transmitted to
facilitate Awalking and also whereby theveffort of
the body of the usen, and .also whereby the effort
the patient or user to move about on the crutches
of the user to walk is greatly facilitated> as> a re
is relatively less fatiguing than when using> ordi 45 sult of> thef‘springy action” of the crutch which
assists-„inthe forward movementof the body as
nary crutches. The upperI and lowersections»l of
Athe Auser liftshis foot` or feet off the ground to
the crutch are also pivotally connected together
whereby'the upper section may conveniently be
A furthei~> object is to provide a crutch whose
folded downwardly into a position adjacent to the
step forwardly.
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lower section to` reduce the over-all length of the 50 over-all length may :be quickly adjustedA or adapt
edft’o patients Vor users ofv diñ‘erent heights, and
crutch for storage purposes, and whereby the
also whereby the upper section of the crutch may
crutch, whennin suchA folded condition, may be
conveniently used as a cane, if desired.
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'be v_adjustedto the length of the users’ or patients’
¿An important object of _the vpresent invention
arms which is highly desirable `towprovi'de the ut
therefore is to provide 'a semi-.rigid crutch having 55
most ‘in¿ comfort to _theuser ofthe crutch.
`Ot’her'obiectsof the invention reside in the pro
¿suflicient resiliency thereinv to absorbshocksna-nd A
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tion is disposed in parallel relation to the lower
vision of an all-metal crutch comprising upper
and lower sections, preferably tubular in cross
section, and which sections are pivotally joined
together by a lockable pivoting means which is
readily operable by a slight movement of the op
section.
The novel crutch herein disclosed, as best illus
trated in Figures 1 to 4, inclusive, comprises an
upper crutch section, generally designated by the
numeral 2, and a lower crutch section designated
by the numeral 3. The upper crutch section is
shown composed of tubular members 4 and 5 ar
ranged in telescoping -relation, whereby the tubu
erator’s wrist, to release or free the pivotal con
nection between the upper and lowercrutch sec
tions, thereby to permit the upper crutch section
to be folded into "an inoperative position; in the
adjustability of each of the upper and lower sec V10 .lar member 4 may :be extended from the member
v5 'to vary the over-all length of the section 2, as
tions of the crutch, and in the tubular construe-`
tion of each of said sections whereby each such.'A will readily be understood Áby reference to Figures
, .l and.3. A suitable arm rest 6 is provided at the
section, is composed of telescoping members hav
ing means for rigidly locking‘them'in ‘adjusted`V
upper end of the tubular member 4, as is cus
positions, whereby when the length of the upper'
tomary in the construction of crutches.
section of the crutch has been adjusted to the
length of the user’s arms, and the combined ad
justments of the upper and lower crutch sections
have been made in Yaccordance with the user’s
tion 2 is provided at its lower> end portion with
a plurality of spaced apertures 1, and a single
aperture 8 is provided in the tubular member 5.
height, the crutch vsections maybe >lockedto-A
The tubular member 4 of the upper crutch sec
20 ToÍsecure the two members together in adjusted
gether to provide in eiîect a unitary one-piece
structure of great strength and flexibility; and
in the simple and inexpensive construction of
the crutch as a whole whereby it may be manu
factured in quantity production at small cost.
Other objects of the invention will appear from
the following description and the accompanying
drawings and will be pointed out in the annexed
position asuitable clamping screw, generally des
ignated by the numeral 9, is received in the aper
ture 8 provided in the lower tubular member 5
andAin a selected aperture 'I in the upper tubular
member 4.
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The clamping screw 9 is shownv comprising two
parts, a tapered plug portion II provided with a
head I2 which may be engaged with a suitable
‘-’ "l washer I3 seated against the outer surface of the
In the accompanying drawings there has been 30 tubular member 5, and a screw I4. Thescrew
I4 is received in> threaded engagement with the
disclosed a structure designed to carry out the
plug I I and has a head I5 seated against a washer
various objects of the invention, but it is to be
I6, similar to the washer I3 against which the
understood that the invention is not conñned to
the exact features shown, as various changes may îï head I2 is seated. By tightening the screw I4
the tubular sections 4 and 5 may be conveniently
be made within the scope of the claims which
locked in adjusted position in a manner to pro
follow.
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claims.
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In the drawings:
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vide a very rigid structure.
.
Figure 1 is a side View ofthe crutch showing
. '
Thelower crutchvsectio'n is shown comprising
the angular arrangement betweenthe upper and -
tubular members I1 and I8 arranged in telescoping
40 relation in a manner similar to the members 4 and
5 >of the upper crutch section 2. The tubular mem
Figure 2 is a rear View of the crutch;
berV I8 is telescoped within the tubular member
Figure 3 is a view similar to Figure 1, showing
lower `sections thereof;
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the 'over-all length of the crutch reduced;
VFigure 4 is a View showing the upper section
folded'into inoperative position and whereby the
crutch may be utilized >as a cane;
Figure 5 is a view showing the/upper crutch sec
tion detached whereby the lower section may be f,
used as a cane;
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I'I, and is provided with a plurality of splaced
apertures ‘I similar to the ones provided in the
lower end of the tubular member 4. An aperture
8 is provided in the vtubular member I1 adapted
to receive a similar clamping screw 9, and whereby
the tubular members I1 and I8 may be locked '
in adjusted position.
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Figure 6A is a partial v_vertical center section of
Figure 2, showing the pivotal connection between
.
The telescoping arrangement of. the tubular
members 4 and 5 of the upper crutch section 2
makes it possible to readily and quickly adjust
the length of said section to suit the length of
‘I-'I of Figure 6, showing the pivotal joint re-` ¿35' the user’s arm, and the telescoping arrangement
of the mem-bers I'I and I8 of the lower crutch
leased to permit folding of the upper section; j _
section 3 provides means whereby the- length of
Figure 8 is a view showing the upper crutch
the lower portion of the crutch may be varied
section swung to a position at substantially right
to suit the length of the user’s legs. ‘In other '
angular relation to the lower crutch sectionv as
words, theY axial adjustment of the telescoping
when being swung from operative to inoperative
60 members 4 and I8 in their complemental mem
position, and vice versa;
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bers 5 and I'I, respectively, constitute an impor
Figure 9 is an enlarged detail sectional View on
tant feature of the present invention, as it pro
the line 9_9 of Figure 6, showing the means for
locking together the tubular members of each of ,j vides means whereby the over-all length or height
of the crutch may be conveniently varied to suit
the upper and lower crutch sections;
Figure 10 is a view showing the crutch in use G5 persons varying greatly in height.
Another important feature of the present in
and illustrating the ñexibility of the lower crutch
vention resides in the novel-means provided for
section when the weight of the body is imposed
plvotally connecting together the two crutch sec
on the crutch;
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Figure 11 is a View showing the load being re-` î ï tions 2 and 3, whereby the upper crutch section
moved from the crutch in the operation of walk 70 may be folded into a position adjacent to the lower
section 3, as shown in Figure 4, thereby to facili
tate handlingV when getting into or out of a car,
Figure 1,2 is a view showing one of the crutches
the upper and lower crutch sections;
Figure "I is a detail sectional View on the line
ing;
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utilized asa cane; and K
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Figure 13 isa View similar to Figure gl but show
ing a construction wherein the upper crutch sec
_ and also whereby the crutch may be utilized as
a cane whendesired, as shown in Figure 12._
` The means provided for thus pivotally connect~
@08,604
ing together> the> two lcrutch.v sectionsA is shown
6
shownfin Figure '7 to the position shown in Fig- '
comprising a fitting I9, having a’bore therein for
receiving the upper >end of the tubular member
I'I ofïthe lower crutch> section 3. 'I'lieiittingL I9
is fixedly secured to the member If'I bylsuitable
'f The spring 38', as hereinbefore stated, serves to
means, as, for example, "a pin 2|, whereby itibe
ofthe lugs 23, but is prevented from so doing by
constantly urge the head 3I lof the handle portion
28 into direct'fcontact with the inclined faces 24
comes in effect an integral part thereof. If
a'relatively stiffer spring 43 received in a coun
terbore 44 provided in the opposite end of the
desired, it may be welded thereto.
The' fitting I9 has a side face 22 arranged in
handle portion 28, when'the knob 33 is in unlock
parallel relation to the axis of the lower crutch 10 ing position, as shown in Figures '7 and 8. The
section 3, as shown in Figure 6. The face 22 is
spring 43 is coiled about the pivot pin 25 and is
flanked at opposite sides by spaced vertical flanges
of such length that when the knob is in unlock
23 having inner inclined faces 24, as best illus
ing position, the spring 43 will slightly separate
trated in Figure '7. A pivot pin or shaft 25 has
the 'head 3I from the face 22 of the fitting I9,
one end fixed to the fitting I9, preferably by such 15 against the tension of the relatively weaker
means as screw threads as shown at 26, and a pin
27 may be provided for securing theV pivot pin
25 to the fitting I9~whereby it cannot accidently
spring 38, whereby the upper crutch section is
free for limited pivotal movement'on the pivot
pin 25,'as indicated by the dotted lines lin Figure
2`. When vthe knob 33 is rotated in a direction to
A suitable handle portion 28r is shown provided 20 lock th'e handle portion 28 against pivotal move
ment on the pivot pin 25, the spring 43 is slightly
with a hub or boss 29 bored to receive the lower
end of the tubular member 5 of the upper crutch
compressed between the face 22 of the fitting I9
section 2 as best shown in Figure 6. The member
and the bottom of the counterbore 44 in the head
5 may be permanently secured-in the hub 29, but
3 I, as will be understood by reference to Figure 6.
if desired it may be removably secured therein
In Figure 6 it will be noted that both springs are
by a pin 39, whereby when the lower portion of
compressed and the inner end of the knob 33 is
engaged with the bottom of the counterbore 36 of
Vthe crutch is to be utilized as a cane for an in
the handle portion 28 to thereby securely clamp
deñnite period, the entire upper section 2 of the
crutch may be detached, as shown in Figure 5.
the handle portion 28 between the knob 33 and
Thefaxis of the hub or boss 29 is preferably dis
the faces 24 of the flanges 23 of the fitting I9.
posed at an angle to the vertical, wherebyr the
The angle of the beveled faces 32 of the head
axis of the upper crutch section 2 is disposed at
3! correspond to the angle of the beveled faces 24
an angle to the axis of the lower crutch section 3.
of the flanges 23, and the parts are so propor
The handle portion 28has an enlarged head 3l
tioned that when th'e handle portion 28 is se
at one end, the width of which is substantially " curely clamped between the knob 33 and the fit
equal to the width of the fitting I9, as best shown
ting I9, as shown in Figure 6, said inclined faces
in Figure '7. The upright corners of the head 3i
24 and 32 will be engaged with one another
are beveled as shown at 32 in Figure '7, whereby
« whereby the end` facel 28’ of the handle portion
is slightly spaced from the face 22 of the fitting
when the upper crutch section 2 is in its extended
become loose therein.
,
or operative position as shown in Figure 6,` the
I9, as indicated at 48, thereby making it impos
beveled corner 32 of the head 3l will seat against f
sible for the handle portion 28 to relatively ro
tate on th'e pivot pin 25, when the upper crutch
the correspondingly beveled inner faces 24 of the
ñanges 23, as will be understood.
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‘To secure the upper crutch section 2 in its oper
ative extended position, as shown in Figures 1,
2,3 and 6, a suitable hand or locking knob 33 is
portion is locked in extended operative position,
as shown in Figure 6.
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received in threaded` engagement with >the' outer
end portion 34 of the pivot 25. The knob 33 has
To permit the upper crutch section 2y to be fold
ed into the position shown in Figure 4, the knob
33 is unscrewed to the position shown in Figure '7.
When in this position it will be noted that the
a cylindrical end portion 35 adapted to be received
in a counterbore 33 provided in the adjacent end
relatively stifferspring 43 has slightly elongated
and outwardly moved the handle portion 28 ron
of the handle portion 28, as illustrated in Figure 8. K
the pin 25 against th'e tension of the relatively
The> handle portion 28 is shown having a rela
weaker spring 38, whereby the beveled faces 32
tively smaller *counterbore 37 adapted to receive
of the head 3I are out of engagement with the
corresponding'beveled faces 24 of the flanges 23
aîsuitable spring 38 coiled'about the pivot .pinv 2,5
and having one end seated against the bottom of 55 of the ñtting I9. The relatively lighter spring
38 is under compression but’because of the rela
the counterbore 3l and its` oppositeend engaging
the adjacent end of f the knob 33 whereby the
tively stiifer tension of the spring 43 the handle
portion Awill be free to slightly rotate upon th'e
spring constantly urges the head 3 I, of the handle
pivot pin 25 within the limits provided by the
portion 28 in a direction towards the face 22 of
the fitting I9.
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60 clearance between the beveled faces 24 and 32, as
shown in Figure '7. Such slight pivotal move
To prevent the inner cylindrical end portion 35
ment of the upper crutch section> 2 relative to the
of the knob 33 from becoming completely disen
lower section 3 is provided as a warning to the
gaged from the counterbore 36, a suitable stop
user ofthe crutch that the pivotal connection
washer 39 is secured to thfe outer end of the pivot
pin 25 by a suitable screw 4I. 'I'he washer 39 65 between th'e two crutch sections has been re
leased and that the user should therefore >not
and screw 4I are shown received in a recess 42
attemptto use the crutch in the, conventional
provided in the end of the knob 33 whereby said
manneruntil the locking knob has been manip
washer and the head of the screw4| are substan
ulated to firmly lock the handle portion 28 to the
tiallyV concealed from View. The above construc
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tion eliminates any possibility of the user-getting 70 ñtting I9.Tofold the upper crutch section into its inop
a portion of his hand pinched between the h'an
erative position, shown in Figure 4, th'e user sim
die portion 28 and the knob .33, whenl swingingv
the upper crutch section from the position shown
ply swings >the upper section `about the axis> of
in Figure l to the position shown inv Figure 4, or , the'pivot pinu25 `whereby the beveledV flanges 23
when screwing locking knob> from the position 75 will cooperate withthe ¿beveled faces. 32 on the
2,408,604
8
8, against the compression of the relatively weak
the upper crutch section 2 is of utmost importance
in that it permits the spacing between the arm
rest 6 and the hand grip to be accurately adjusted
er spring 38.
to the length of each user’s arms. The additional
head 3| to relatively outwardly move the handle
portion 28 on the pivot pin, as shown in Figure
When th'e upper crutch section
spring 3B will cause the handle portion 28 to
adjustment in the lower crutch section also makes
it possible to quickly adjust the lower portion of
assume its position between the flanges 23 of the
fitting I9 with a snap action, whereby the upper
the crutch to the length of the user’s legs. In
other words, by providing independent adjust
crutch section 2 will be retained in substantially
ments in the upper and lower crutch sections 2
reaches its folded position, shown in Figure 4, the
the position shown in Figure 4. If desired, the 10 and 3, respectively, the length of the crutch may
be accurately adjusted to suit each individual
relatively stiiîer spring 43 may be omitted, as it
serves only to partially separate the beveled faces
In Figure 5 the upper crutch section 2 has
between the head 3l and flanges of the fitting
been'detached from the handle portion 28 to
I9 thereby to warn the user of the unlocked con
dition of the pivotal connection between the up 15 provide a relatively lighter weight cane than the
scructure shown in Figure 4, which may be found
per and lower sections of the crutch, as herein
desirable if the crutch is to be used as a cane for
before described.
a considerable length of time. When thus used,
If th'e crutch'is'to be used as a cane, knob 33
the crutch handle provides a comfortable pistol
is simply rotated in a direction to securely clamp
the handle portion 23 between the knob andthe 20 like grip which may be conveniently grasped by
the hand and provides ample room for all of the
iiange faces 24 of the fitting I9, as hereinbefore
fingers of the user’s hand grasping the handle.
stated, whereby the parts become in effect -an
If the crutch is to be used as a cane for short
integral structure and the crutch may then be
periods only, the upper crutch section 2 may be
conveniently used as a cane, as shown in the
right hand of the user in Figure 12.
25 swung downwardly and locked in the position
shown in Figure 4l, in which condition the crutch
Another important feature of the invention re
case.
sides in the construction of the upper and lower
sections 2 and 3 of the crutch, particularly the low
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may be used as a cane as shown in Figure l2.
In Figure 13 there is shown a slightly modified
construction wherein the upper crutch section 2
reasonable limits when the load of the user’s body 30 is shown disposed in parallel relation to the lower
crutch section 3, but with its axis offset from
is imposed on the crutch. Such flexing of the lower
the axis of the lower crutch section 3. When the
crutch section 3 has proven very effective to ab
upper section is so disposed with relation to the
sorb shocks, and, moreover, it has been found to
lower section, a small brace element 45 may be
greatly facilitate the operation of walking, be
cause the flexing of the lower crutch section tends 35 provided to firmly support the arm rest 6 upon
the upper telescoping member 4 of the crutch
to impart a forward thrust to the user’s body
section r2.
,
when he leans forwardly on the crutches to
The novel crutch herein disclosed is practically
take a forward step, as will be understood by ref- .
er section, whereby said section may ilex within
indestructible, and the telescoping sections of the
erence to Figures 10 and 11.
The crutch sections 2 and 3 may be conven 40 upper and lower crutch sections 2 and 3 may be
iently and economically manufactured of any tu
bular material suitable for the purpose, which is
relatively light in weight and has considerable
resiliency whereby it may readily flex within cer
tain limits under the load of the user’s body with
constructed of standard stock material, such as
light gauge seamless tubing which has great
strength and resiliency and is extremely light in
weight. The lower terminals of the tubular mem
ber I8 of theA lower crutch sections 3 are shown
provided with the usual rubber tips 46, as is well
known inthe art.
It will `be apparent to those skilled in the art
that I have accomplished at least the principal
posed by the handle portion 2B and locking knob
33 in conjunction with the single upper section 50 objects of my invention, and it will also be ap
parent to those skilled in the art that the em
2 for supporting the arm rest 6. When using
bodiments herein described may be variously
the novel crutch herein disclosed the user grips
changed and modiñed without departing from
the handles of the crutches as shown in Figure 10,
the spirit of the invention, and that the inven
and holds his arms substantially straight, where
tion is capable of uses and has advantages not
by substantially the entire weight of the user’s
herein specifically described; hence it will be ap
body, when he leans forwardly on the crutches as
preciated that the herein disclosed embodiments
shown in Figure 10, may be transmitted to the
are illustrative only, and that my invention is not
hand grips of the crutches through the bony
limited thereto.
structure of the user’s arms, and not through
I claim as my invention:
the muscles thereof, as when using conventional
1. A crutch comprising an upper section and a
crutches. Because of the crutch handles being
lower section, a hand grip extending laterally
offset from the axis of the lower crutch sections
from the connection between said sections, and
3, said sections, because of their inherent resil~
said lower section being resilient and flexing in
iency, will ñeX usually in a forward direction, as
oneA direction under the weight imposed thereon
indicated in Figure 10, thereby cushioning the
by the user’s body, thereby to minimize shocks
user’s body against shocks. At the same time, as
which may be transmitted through the crutch to
the user’s body is moved forwardly on the
the user’s body.
.
crutches, the “springy action” of the crutch sec
2. A crutch comprising an upper section and a
tions 3 will impart a slight forward thrust of the
user’s body, which it has been found greatly facil 70 lower section joined together intermediately of
the ends of the crutch, a hand grip extending
itates the operation of walking and also reduces
out any danger of collapsing.
.
Another important feature resides in the ar
rangement of the hand grip of the crutch com
fatigue.
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In Figures l and 2 the crutch sections 2 and 3
are shown fully extended, whereas in AFigure 3
said sections are retracted to reduce-the length 75
of the crutch. The longitudinal adjustment of
laterally fromthe connection between said sec
tions, and the lower` section being capable of
laterally flexing under the weight imposed thereon
bythe user’s body.
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3.> A crutch comprisingían upper'section and a
2,408,604
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pivotally connecting together the upper and lower
sections whereby the upper section may be folded
into a position adjacent to the lower section,
lower section joined»«together intermediately of
the ends of the crutch, a hand gripextending
laterally from'l theconnection between said sec
tions, andsaid lower section being resilient and
ilexing in one direction under the weight impose
thereon by the'user’s body.
and a suitable hand grip embodied in said piv
otal connection.
f
10. AA crutch comprising an upper section and
av lower tubular section, each of said sections
4. A crutch comprising an vupper sectionan-d a
lower resilient Section joined together interme
being composed of telescoping members whereby
diately `of the ends of thecrutch; a hand grip
extending laterally from the connection between
said sections adapted tofbe grasped by the user,
pendently varied tosuit the heights of different
the over-all length of each section may be inde
users, means for locking the telescoping members
of each section in adjusted position, means piv
the load imposed on the crutch by the weight of
the user’s body -îbeing offset from'the axis >of the
lower crutch section’wher’eby' said lower section
otally connecting together said sections whereby
the upper section may be folded into a position
adjacent to the lower section, and a suitable hand
may partially iiex in one direction'under the
load of the user’s-body and thereby cushion the
` grip embodied in said pivotal connection and lat
erally extending from the axis of the crutch.
1l. A crutch comprising an upper section and
a lower tubular section,- each of said sections be
mediately rof the ends of the crutch, a hand grip '.10 ing composed of telescoping members whereby
extending laterally from the connection between
the over-all lengthof each section may be inde
said sections adapted to be grasped by the user,
pendently varied to suit the heights of different
the load imposed on the crutch by the weight of ’ users, means pivotally connecting together said
sections whereby the upper section may be folded
the user’s body being oiïset from the axis of the
lower crutch section and causing said lower sec#
into a position vadjacent to the lower section, a
suitablevhand grip embodied in said pivotal c0r1-,
tion to partially iiex in one- direction under the
nection and laterally extending from .the axis of
load, and thereby impart a forward thrust to
the user’s body each time the user steps forwardly
the crutch, and `a conveniently operable locking
with a portion of his weight imposed on the
device embodied in said handle for securing the
upper crutch section in extended or folded condi
load.'4
~~
`
-
`
A
l
`
f
>5. A" crutch comprising an upper section and
a lower resilient'section joined together inter
crutch.
'
'
tion, said locking device being readily operable
6. A crutch comprising an upper section `and
a lower resilient section joined together-interme
diately of the ends of the crutch, a hand grip
with one hand.
'
`
12. A longitudinally adjustable crutch com
extending laterally from the connection between
prising ra lower section composed of telescoping
said sections adapted to be grasped by the user, 35 members whereby the length of said section may
the load imposed on the crutch by the weight of
be varied, means forvsecuring said telescoping
the user being offset from the axis of the lower
members in adjusted position, a fitting secured
crutch section and causing said section to par
to the upper end of said lower section vand having
a pivot extending laterally therefrom, anl upper
tially flex in one direction, thereby to cushion
said load, the offset relationship between said
hand grip and the axis vof said resilient crutch
crutch section comprising telescoping members
whereby the length of said section may be varied,
means Vfor securing the tubular members of said
upper section in adjusted position, a hand grip
section also imparting a forward thrust to the
user’s body each time the user steps forwardly
with a portion of his weight imposed on the crutch
secured to the lower end of the upper -section and
as a result of the resiliency of the lower crutch 45
laterally extendingr'therefrom, said hand grip
section.`
having a bore therein for receiving said pivot, a
.
7. A crutch comprising an upper section" pro
vided with an arm rest, a lower section, means
for >pivotally connecting the upper fend of the
lower section to the lower end“ of the upper >sec
tion whereby the upper section may be folded into
locking device received in threaded engagement
with `the outer end of said pivot and forming a
V part of the hand group, said locking device being
50 operable to secure the hand grip against rela
tive pivotal movement on said pivot, and means
a position adjacent to the lower section, athand ' v whereby when'said locking device is released, the
upper crutch section maybe retained in opera
grip embodied in said pivotal connection, means
tive or extended position, and may then be folded
forming a portion of. vsaid hand grip and capable
of being manipulated to lock saidpivotal con 55 downwardly to a position adjacent to the lower
nection against movement, and means in the up
per section whereby the spacing between the arm
rest and the hand grip may be varied to suit the
length of the user’s arm.
.
. crutch section.
v'13. A fold-able crutch Acomprising upper and
lower sections„a ñtting secured to the upper end
of the lower section and providedV with spaced
8; A crutch comprising upper and lower sec--l 60 parallel iianges having inwardly facing beveled
tions, pivotally _connected together whereby the
upper section may be folded into a position adja
cent to the lower section, a hand grip embodied
faces, a pivot pin secured to said ñtting between
said flanges :and extending laterally from the
axis of the lower crutch section, a handle por
tion secured .to the lower end of the upper crutch
in the pivotal connection between 'said sections,
and means whereby each of said sections may be 65 section and mounted for pivotal and limited axial
movements on .the pivot pin, and a knob received
longitudinally adjusted to adapt the crutch for
in threaded engagement with the outer end of the
users of different heights and also whereby the
pivot pin vand having one endadaptedA to engage
length of the upper crutch section may be ad
justed to the length of the user’s arm.
'
the adjacent end of the,A handle portion, thereby
9. A crutch comprising an upper section and 70 to secure said handle portion in locking engage
ment with said ñanges to prevent relative rota
a lower tubular section, said lower section being
composed of telescoping members whereby its
over-all length may be varied to suit the heights
of different users, means for locking said tele
scoping members in adjusted positions, means
tion of .the handle portion on the pivot pin.
14. A foldable crutch comprising upper and
lower sections, a ñtting secured to the upper end
' of the lower section and provided with spaced par
2,408,604
11
allel flanges having inwardly facing beveled
faces, a pivot pin secured to said ñtting between
said flanges and extending laterally from the axis
of the lower crutch section, a handle portion se
cured to the lower end of the upper crutch sec
tion `and mounted for pivotal and limited axial
movements on the pivot pin, »a knob received in
l12
folding the upper crutchsection'into inoperative
position, and said stiffer spring serving only to
disengage the handle portion from the beveled
faces of said flanges, when the locking knob is in
unlocking position, whereby .the upper crutch sec
tion will have limited pivotal movement to warn
the user that the upper crutch section is not se
curely locked to the lower section.
threaded engagement with the pivot pin and hav
16. A `foldable crutch comprising upper and
ing one end adapted to engage the adjacent end
lower sections, each composed of telescoping mem
of the handle portion, thereby to secure said
bers for varying the over-all length of `the crutch,
handle portion in locking engagement with said
a fitting secured to 4the upper end of the lower
flanges to prevent relative rotation of the han
crutch section and provided with spaced parallel
dle portion on theV pivot pin, and spring means
flanges disposed in parallel relation to the axis
associated With the pivot pin and the handle por
tion for constantly urging the handle portion in 15 of -said lower crutch section, -a pivot pin secured
to said fitting between said flanges and extending
a direction .towards said flanges, whereby when
laterally from :the axis of said lower crutch
the hand knob is manipulated to release the han
section, a handle portion secured to the lower end
dle portion, said spring means will retain the
of the upper crutch section and mounted for piv
handle portion in locking engagement with said
flanges, but will permit the handle portion to Vbe 20 otal and limited axial movements on the pivot
pin, a relatively stiiî spring mounted on said pivot
relatively rotated on the pivot pin in the opera
pin between the ñtting and said handle portion,
tion of folding the upper crutch section into a po
a locking knob received in threaded engagement
sition adjacent to the lower crutch section, said
with the outer end of the pivot pin and having
flanges functioning to retain the upper crutch
section in extended or folded positions and to ac 25 one end adapted to engage the handle portion
whereby the handle portion may be clamped in
curately position the upper crutch section with
operative position between said flanges to secure
respect to the lower crutch section when the up
the upper .crutch section in extended operative
per crutch section is in extended operative posi
position, and a relatively weaker spring inter
tion.
l5. A foldable crutch comprising upper and 30 posed between said locking knob and the adjacent
end of the handle portion constantly urging the
lower tubular sections, a fitting secured to the
handle portion against said flanges, said weaker
upper end of the lower section and provided with
spring serving .to retain the handle portion in po
spaced parallel flanges disposed in parallel rela
sition between said ilanges when the locking knob
tion to the axis-of said lower crutch section, a
has been manipulated to facilitate folding the
pivot pin secured to said fitting between said
upper crutch section into inoperative position,
ñanges and extending laterally from the axis of
and said stiffer spring serving only to disengage
the lower crutch section, a handle portion secured
the handle portion from the beveled faces of said
flanges when the locking knob is in unlocking po
on the pivot pin, a relatively stiff spring mounted 40 sition, whereby the upper cru-tch section will have
limited pivotal movement to warn the user that
on said pivot pin between the ñtting and said
the upper crutch section is not securely locked to
handle portion, a locking knob received in thread~
the lower section, and said weaker spring yielding
ed engagement with the outer end of the pivot pin
to permit the upper crutch section to be swung
and having one end adapted to engage the han
to an inoperative position adjacent to the lower
dle portion whereby the handle portion may be
to the lower end of the upper crutch section and
mounted for pivotal and limited axial movements
clamped in operative position between said flanges
crutch section.
to secure the upper .crutch section in extended
17. A crutch comprising an upper- section and
a lower resilien-t section joined together inter
mediately of :the ends of the crutch, and a hand
'
operative position, and a relatively weaker spring
interposed between said locking knob and the
adjacent end of the handle portion for constantly 50 grip extending laterally from said sections, where
by the lower resilient section may flex in one di
urging the handle portion against said flanges,
rection when the weight of the user’s body is im
said weaker spring serving to retain the handle
posed on said handle.
portion in position between said ñanges when .the
THOMAS Bf ERICKSON.
locking knob has been manipulated to facilitate
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