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Патент USA US3047305

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July 31, 1962
B. c. SCHAEFFER
3,047,293
ADJUSTABLE EXERCISING BAR
Filed May 2, 1960
ATTORNEY
United States Patent O?ice
1
3,047,293
ADJUSTABLE EXERCISING BAR
Bernarr C. Schae?er, Battle Creek, Micln, assignor to
Battle Creek Manufacturers, Inc, Battle Creek, Mich,
a corporation of Michigan
3,047,293,
Patented July 31, 1962
2
FIGURE 7 is an outer end view of the rubber mount
ing head shown in FIGURE 6.
FIGURE 8 is a top view of the rubber mounting head
illustrated in FIGURES 6 and 7, but mounted on a swivel
end member.
In the ‘drawings, the exercising bar is generally desig
Filed May 2, 1960, Ser. No. 26,248
9 Claims. (Cl. 272-62)
This invention relates broadly to exercising equipment,
metal tube 11, the two tubes being slidably telescoped
for relative longitudinal adjustment according to the width
and in its speci?c phases to a new and improved exercising
bar to be removably mounted horizontally between the
of the door frame F upon which the exercising bar is to be
mounted.
side members of a door frame ‘or the like.
nated B. It includes an outer metal tube 10 and an inner
A mounting head 12, FIGURES 1 and 2, is carried by
Several forms of exercising bars have been previously
the outer end of the outer tube 10; a knurled sleeve 13
proposed but most of them have been rigidly mounted
is adjustably threaded at 14 upon the outer end of the
parts of a more comprehensive assembly including swings, 15 inner tube 11; and a second mounting head 15 is swivelled
rings, et cetera. A few individual exercising bar assem
at 1-6 to the outer end of said sleeve 13. Each of the
blies have been proposed but almost universally they have
mounting heads 12 and 15 preferably comprises a metal
not been as stable as desired, or loosened dangerously by
cup 17 and a ring 18 of ?rm but yieldable rubber fric—.
turning when ?rmly gripped under conditions of use. It
tionally held in said cup and projecting somewhat there
was a recognition of these di?iculties and shortcomings of
from to abut the door frame F.
the prior exercising bars which led to the conception and
The cup bottom disc 19, FIGURES 2 and 3, of the
development of the present invention.
mounting head 12 is welded or otherwise secured at 20 to
Accordingly among the objects of the present invention
the outer tube 10 and is formed with a diametrical slot
is the provision of a novel construction which will permit
21. The corresponding disc 19a, FIGURE 2, of the
quick and easy extension or retraction of the exercising 25 mounting head 15 is connected by a central swivel bolt
bar to permit rapid adjustment and use thereof with door
22 to a disc 23 which is threaded into the outer end of the
frames of various widths.
sleeve 13. The disc 23 is welded in place, or otherwise
Another object is to provide novel quick adjusting latch
secured against turning in the sleeve 13.
means within the exercising bar for holding same against
The inner end of the inner tube 11, FIGURES 2 and 4,
retraction in length after it has been adjusted for mount 30 is closed by a metal disc 24 which is welded or otherwise
ing on a selected door frame, said latch means being
secured thereto. This disc has a diametrioal slot 25 which
movable to and from operative positions by rotating the
is aligned with the slot 21 above described. The portion
exercising bar to two positions spaced apart 180°, re
24a of the disc 24, at one end of the slot 25 constitutes
spectively.
A further object is to provide a novel construction
for ?nally extending the exercising bar into tight anti
slipping engagement with the opposite sides of the door
an abutment for coaction with a latch bar 26 to hold the
two tubes 10 and 11 in relatively adjusted position, ac
cording to the width of the door frame F on which the
exercising bar is to be mounted.
1
frame after said latch means has become eifective.
‘
One end of the latch bar 26, FIGURES 2, 3 and 5,
A further object is to provide a latching means which
extends loosely through the ‘slot 21 of the disc 19 of the
is positively locked even when the exercising bar is mere
mounting head 12, and said latch bar end is provided.
ly touching the opposite sides of the door frame.
with two pins 27 and 28 which project laterally from
Yet another object is to provide a simple and practical
said bar end and are disposed respectively at the outer and
construction which is positive in action and may be ex
inner sides of said disc 19. The latch bar 26 also ex
peditiously manufactured and pro?tably marketed at a
tends loosely through the slot 25 of the disc 24 and'has
reasonable price.
45 longitudinally spaced notches 29, any of which may re
Still further objects and advantages of the invention
ceive the abutment portion 24a of the disc 24, according.
will appear as the description proceeds.
to the length to which the exercising bar may be extended
To the accomplishment of the foregoing and related
or retracted. The side walls 30 of the notches '29 and
ends, the invention, then, consists of the exercising means
the coacting side 31 of the abutment 24a are inclined in a
hereinafter fully described and particularly pointed out 50 direction to prevent accidental release of the latch bar 26
in the claims, the annexed drawing and the following de
while the device is being mounted and while it is in use.
scription setting forth in detail certain means for carry
The inner end of the latch bar 26, FIGURE 2, is pro
ing out the invention, such disclosed means illustrating,
vided with a suitable stop 32 which prevents separation of
however, but several of various ways in which the princi
the tubes 10 and 11 by striking the disc 24 when the bar
ple of the invention may be used.
55 B has been extended to a predetermined length.
‘In the annexed drawing:
The width of the latch bar 26 is suf?ciently less than
FIGURE 1 is a side elevation showing the exercising
the internal diarneter of the inner tube 11 to allow said
bar mounted in position for use.
FIGURE 2 is ‘a longitudinal sectional view, partly
latch bar 26 to drop to a released position, ‘when the ex?
FIGURE 3 is an end view as indicated by the arrow
3 of FIGURE 2.
telescoping length, to allow placing of the mounting heads.
ercising bar B is rotated to the position shown in FIG
broken away, showing the latch means engaged in effec 60 URE 5. Therefore, the bar B may be easily extended or
tive operating position.
retracted in any required amount within its operative
12 and 15 in readness to abut the frame F. As soon as
FIGURE 4 is a transverse section as taken on line
this length adjustment has been eifected, the bar B is
4—4 of FIGURE 2, looking in the direction of the ar 65 rotated 180° to the position shown in FIGURE 2. This
rows.
allows the latch ‘bar 26 to drop for engagement with the
FIGURE 5 is a ‘fragmentary view similar to the left
end of FIGURE 2 but showing the latch means released
ready for endwise adjustment of the bar length.
abutment 24a to hold the tubes 10 and 11 in relatively
adjusted position. When such dropping of the latch bar
26 occurs, unless one of its notches 29 immediately re-I
FIGURE 6 is a side view, partly broken away and in 70 ceives the abutment 24a, it will of course be necessary to
section, showing a modi?ed and simpli?ed construction
relatively slide the tubes 10 and 11 until said abutment
rubber mounting head which may be employed.
seats in one of the notches. Then, by rotating and thus
3,047,293
0
4
extending the sleeve 13, the bar B may be extended to
a substantially flat sided latch bar disposed longitudinally
and loosely within said telescoped tubes, means connect
ing one end of said latch bar with said outer tube and
allowing said latch bar to solely shift diametrically of said
tubes by gravity when the exercising bar is in general hori
(.9
bring the two mounting heads 12 and 15 into tight anti
slipping contact with the side members of the frame F.
To remove the bar B from the frame, it is simply neces
sary to turn the sleeve 13 suf?ciently to cause the mounting
heads 12 and 15 to disengage from the frame.
In order that the user may determine when the bar B
zontal position and rotated to either of two gravity op
erated positions 180° apart, one of which is a latching po
sition, and coacting means on said inner tube and latch
bar for connecting said latch bar with said inner tube
conspicuous indicator is provided on the bar B. Such an 10 solely for diametrical shifting in the latter after relative
longitudinal adjustment of said inner and outer tubes, said
indicator is shown at 33 secured to the cup bottom disc
coacting means being engageable upon dropping of said
19 of the mounting head 12.
latch bar by gravity when the exercising bar is rotated to
If desired, instead of providing outwardly opening,
the latching one of the aforesaid two positions, said coact
rubber-ring carrying mounting heads constructed as above
described, simpli?ed construction, ?rm, all-rubber, or 15 ing means after engagement being disengageable by drop
ping of said latch bar by gravity when the exercising bar is
suitable plastic, mounting heads such as the head 34 of
rotated to the other of said two positions, and a third
FIGURES 6, 7 and 8, may be employed. ‘The inner end
has been turned to either of the positions shown in FIG
URES 2 and 5, for above explained reasons, a suitable
of the head 34 has a suitable bar-end receiving socket 35
and the outer end 36 is concavely curved to engage the
tubular member adjustably engaging the outer end of one
of said tubes, said third tubular member carrying one of
door frame side members F. Upon tightening of the bar 20 said abutments on the outer end of same in position to be
tightened against one of said ?xed vertical members to sup
in place, the mounting head 34 yields until the curved end
port said exercising bar.
36 straightens and contacts, with application of suitable
3. A structure as set forth in claim 2, in which said
pressure, throughout its area, with the frame F. Ideally
coacting means comprise an abutment secured to said
the mounting head 34 will be made of a size, shape, and
inner tube, and longitudinally spaced notches in said
?rmness such that when fully ?attened by tightening the
latch bar to selectively receive said abutment.
bar against frame F, such bar will have a 300 pound sup
4. A structure as set forth in claim 2; said connecting
porting capacity which is adequate for normal use of the
means for connecting one end of said latch bar to said
assembly. The outer tube 10a, in this case, would be
outer tube comprising a disc secured to the outer end of
provided, as previously described, with a disc 1% having
a slot 21a through which latch bar 26 could pass and be
held upright with pins 27 and 28 engaging opposite faces
of said slotted disc which, in this case, is recessed into
outer tube 10a to provide clearance with closure disc 37
at the end of outer tube 10a. The outer end of sleeve 13
would have a swiveled disc 38 for head 34 to permit free
rotation as previously described. Thus a head 34 would,
in effect, be substituted for rubber ring 18 in conventional
manner and the showing is intended to diagrammatically
illustrate same. In any event a preferred method of dis
assembling and reassembling the exercising bar is to re
move or replace pin 27. The removal of pin 27 allows
the inner tube 11 and bar 26 to be pulled out of outer
tube 10 or 10a, and reversing these steps results in as
sembly of the exercising bar involved.
From the foregoing, it will be seen that a simple,
novel, and advantageous construction has been disclosed
for attaining the desired ends. Attention is invited, how
ever, to the possibility of making variations within the
spirit and scope of the invention as illustrated and de
scribed.
Other modes of applying the principle of my invention
may be employed instead of those explained, change be
ing made as regards the exercising equipment herein dis
closed, provided the means stated by any of the follow
ing claims or the equivalent of such stated means he em
ployed.
I therefore particularly point out and distinctly claim
said outer tube and having a diametrical slot through
which said end of said latch bar extends, and lateral
projections on said latch bar end at opposite sides of said
disc; said coacting means comprising a second disc se
cured to the inner end of said inner tube and having a
diametrical slot in same, which falls short of reaching one
side of said tube, through which said latch bar extends,
and longitudinally spaced notches in one edge of said
latch bar to selectively receive the non-cut out portion of
said second disc at one end of the last mentioned slot.
5. A structure as set forth in claim 2; said connecting
means for connecting one end of said latch bar to said
outer tube comprising a disc secured to the outer end
of said outer tube and having a diametrical slot through
which said end of said latch bar extends, and lateral pro
jections on said latch bar end at opposite sides of said
disc; said coacting means comprising a second disc se
cured to the inner end of said inner tube and having a
diametrical slot in same, which falls short of reaching
one side of said tube, through which said latch bar ex
tends, and longitudinally spaced notches in one edge of
said latch bar to selectively receive the non-cut out por
tion of said second disc at one end of the last mentioned
slot, said portion of said second disc and the side wall of
each of said notches to abut said disc portion being in
clined in a direction to prevent accidental disengagement.
6. A structure as set forth in claim 2; wherein said
adjustable abutments have a ?rm but pliable outer face
for contacting and being gripped against said ?xed ver
tical members.
‘
1. An extensible and retractible exercising bar compris
ing an outer tube and an inner tube slidably telescoped 60 7. A structure as set forth in claim 2; wherein said
adjustable abutments each have a ?rm but pliable outer
with each other for relative longitudinal adjustment,
face which has an outwardly concavely curved surface
means within said tubes for non-rotatably connecting and
which ?attens under pressure, for contacting and being
holding same in lengthwise relatively adjusted positions,
gripped against said ?xed vertical members; and wherein
a mounting head carried by the outer end of one of said
as my invention:
the outer end portion of one of said tubes is threadedly
engaged with said third tubular member and rotatable to
vary the length of the assembly, with said rotatable por
tion carrying a swivelled end on which one of said pliable
the outer end of said sleeve to abut a second vertical sup
outer face members is mounted.
port ‘and be tightened against same when said rotatable
8. An extensible and retractible exercising bar as set
sleeve is moved to lengthen said bar.
70
forth in claim 1, wherein said mounting head on each
'2. In an extensible and retractible exercising bar includ
end of said exercising bar utilizes a means having a ?rm
ing an outer tube and an inner tube slidably telescoped
but pliable body portion which has an outwardly ex
but non-rotatable relative to each other and having rela
tending, concavely curved, surface which resiliently
tively adjustable abutments to abut ?xed vertical mem
bers between which the exercising bar may be positioned; 75 ?attens when ?rmly tightened against said ?xed vertical
tubes to abut a ?xed vertical support, a manually rotatable
sleeve threaded adjustably onto the outer end of the other
of said tubes, and a second mounting head swivelled to
5
3,047,293
supports, whereby the extent of ?attening is a guide to
the ?rmness with which the exercising bar is gripped to
said vertical supports.
9. In an extensible and retractible exercising bar for
mounting between ?xed, substantially parallel, substan
tially planar supports presenting a relatively uninterrupted
surface, said bar having at least two telescoping mem
bers connected for axial movement relative to each other
and having means for forcing said members into extended
position; the combination therewith of a mounting head 10
on each end of said bar, each of said heads having an
outer end portion movable into forced engagement with
one of said supports when said bar is mounted in ?xed
position ready for use, each of said outer end portions
being formed of a resilient, compressible material and
having an axially and outwardly directed concave sur
6
face of substantial curvature, at least one edge of said
curved surface being cut away to expose the curvature
of said surface to view in a direction transversely of
said rod, whereby when said end portions are forced
against said supports, the extent of the compression and
?attening of said end members will be clearly visible to
indicate the ?rmness with which the exercising bar is
gripped in place between said support-s.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,637,555
2,919,134
Klaudt _____________ __ May 5, 1953
Zuro ________________ .._ Dec. 29, 1959
398,491
France ______________ __ Ian. 14, 1909
FOREIGN PATENTS
/
UNITED STATES PATENT OFFICE
I
CERTIFICATE OF CORRECTION
Patent No, 3,047,293
July 31v 1962
Bernarr C. Schaeffer
Column 3, lin es
—— reassembly --.
43 and 44, for "'
assembly" read
Signed and ‘sealed this 20th day of November 1962°
(SEAL)
Attest:
ERNEST Officer
w. SWIDER
\ttesting
DAVID L- LADD
Commissioner of Patents
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