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Патент USA US3050829

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Aug. 28, 1962
J. MCCREARY
3,050,816
HIGH SPEED TENTER CHAIN DEVICE
Filed March 14. 1960
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BY
‘Jaw, WMJZM
United States Patent 0. "t' Ce
3,950,816
Patented Aug. 28, 1962
2
3,050,816
HIGH SPEED TENTER C
links 14 and rollers 11 and 12. The tenter member is
also provided with a pin plate 18 having pins or tenter
hooks 19, and the pin plate is removably secured to the
tenter plate by any suitable means such as the ?at head
DEVICE
John McCreary, N. Mohawk St, Cohoes, NX.
Filed Mar. 14, 196i), Ser. No. 14,919
5 Claims. (Ci. 26-61)
screws 20.
The entire device includes a housing comprising a pair
of spaced-apart upper and lower channels ‘21 and 22,
This invention has to do with tenters, that is, tentering
and ?nishing machines for the stretching, drying and
respectively, that include as the bed the track portions 21'
and 22’ which are curved in accordance with the par
is automatically ‘and continuously run through the ma
ticular con?guration of the upper and lower rollers 11
chine, having particular reference to an improved. high
and 12.
speed tenter chain device therefor that is of novel con
These channels are held in spaced-apart relation by
struction and which produces new and advantageous re
spacer channels 23 and 24 to such an extent that the tenter
sults that are not obtainable by conventional chain de
plate is permitted to extend therethrough and move there
vices for such machines, and the provision of such a de 15 between when the chain is in motion.
vice is the principal object of the invention.
The housing includes sealing means in the form of upper
Speci?cally, it is also an object of the invention to pro
and lower angular spring plates 25 and 26, respectively,
vide such a chain device that is particularly adaptable for
which are held in position by overlying holding members
use in such highly improved tenter machines as that dis
27 and 28 by means of screws 29 and 30 secured to the
closed in the Peck Patent No. 2,773,312 which utilizes
upper and lower channels 21 and 22. The free ends of
super-heated steam as a rapid drying medium in which
the sealing members terminate in beads 25' and 26' that
high speed is a factor.
preferably are coated with a suitable heat resisting plastic
More speci?cally, it is an object of the invention to
31, such as, for example, Te?on. The fabric shown at
provide such a tenter chain device comprising link con
32 is passed between the sealing beads and over the tenter
necting chain pins each having first and second roller
hooks 19 to be held thereby as it is run through the ma
setting of fabrics to a predetermined width as the fabric
supporting spindle portions, ?rst and second rollers
chine at high speed and stretched, dried and set by the
action of the super-heated steam within the steam cabinet
mounted on such respective portions of each of said pins,
a tenter member having fabric hooks, pins or clips carried
by the chain pins, and housing means including a bed or
tracks for the rollers of the chain.
Further speci?c objects of the invention comprise a
new tenter clip and chain that will permit a speed within
an approximate range of 70-100 y.p.m. (yards per min
ute) under seal in a super-heated steam cabinet; to pro
(not shown herein) in which the deviceabove described
is located.
It will be understood that the housing or bed in which
the chain is located is disposed on opposite sides of the
machine and in parallel relation extending longitudinally
thereof. It will also be understood that a single endless
chain runs through each housing or bed on the tracks in
vide a new type bed or track to accommodate the new 35 a rectilinear traverse in such a manner that the tenter
chain and which will have a minimum thickness and
- width; and means to seal off the pin plates and chain from
the fabric.
hooks carry the fabric stretched between them when
they appear in opposed relation inwardly of the machine
as more fully illustrated in FIG. 3 ‘of the drawing. For
a conventional type tenter see my Patent No. 2,729,874;
.
Other objects of the invention will in part be obvious
and will in part appear hereinafter.
For a fuller understanding of the nature and objects
of the invention reference should be-had to the following
detailed description taken in connection with the ac
and the improved type disclosed in the above mentioned
Peck patent. Because of the nature of the housing and
the similarity of parts constituting the rectilinear traverse,
similar reference numerals have been applied thereto,
especially as shown in FIG. 2 of the drawing. However,
there is this exception, namely, in place of the sealing
companying drawing, in which:
FIG. 1 is a plan view of a fragmentary portion, with
parts broken ‘away, of an embodiment of such an im
45 means 25 and 26, a closed member or housing piece 33
proved type of chain device illustrating a section of fabric
carried thereby;
FIG. 2 is a transverse sectional View taken along the
line 2--2 of FIG. 1;
FIG. 3 is a plan view of a fragmentary section of the 50
by the screws 34.
,
>
The chain device just described has many advantages
improved chain device illustrating opposed sections there
particularly where high speed is required especially when
of on opposite sides of ‘a tenter machine holding a section
the same is used in the connections heretofore men
tioned. For example, the use of a double roller with the
of fabric therebetween; and
FIG. 4 is a sectional detail of a portion of a beaded
pin plate therebetween distributes the force regardless
sealing element that preferably is plastic coated.
Referring more particularly to the drawing, there is
of what the tension of the fabric may be. Therefore,
there will be no tendency to twist, the pull is evenly
shown generally at 10 such ‘a chain device.
J
is used because the fabric has become disconnected from
the tenter hooks as the latter make their return run through
the rectilinear traverse. The piece 33 is held in position
This com
distributed and the tailpiece such as that found in con- '
prises chain units. Each chain unit is composed of two
ventional machines becomes unnecessary. Thus, the
connecting vertically disposed chain pins 10’, each having
width of the tenter bed can he shortened and the use
?rst and second roller supporting portions and a ?rst and 60 of the sealing device, as described, can readily be utilized
second roller 11 and 12, respectively, on the respective
in which the fabric passes therebetween yet shuts out the
portions of each of the connecting pins. Upper roller 11
steam ‘from reaching the rollers and breaking down the
' and lower roller 12 might be regarded as forming a pair
lubrication. The sealing members are so designed that
when a seam or a thickness in the fabric is presented
and preferably are spherical or have curved or tapered
surfaces, the same being mounted to rotate on the spindle 65 therebetween, they will spread apart due to their spring
action, the same preferably being made of stainless steel.
portions of the pins 10'. The chain links are shown in the
Thus, both the chain and the bed are sealed off ‘from
?gures and designated 13, 14 and 15. These are main
tained in position by locking springs designated by the
numeral 16.
~
the super-heated steam on both sides and a more rigid
type of bed is permitted by utilizing a box type of'housirrg.
A tenter member or plate 17 is carried by the pins 10' 70 Such a chain becomes substantially frictionless, the pull
being from the center midway from the rollers, which
and is normally connected thereto at one end between the
tends to eliminate wear and tear and therefore is suit
I 3,050,816
3
able for high-speed operation. Also, smaller and lighter
parts may be thereby manufactured and twisting and
binding is eliminated. The rollers being completely en
cased not only prevents the steam from breaking down
the lubrication but also prevents the lubrication from
and rollers and being provided at its free end with fabric ,
holding pins, and housing means including a bed for said '
chain device and sealing members having opposed por
tions terminating in beads surrounding said tenter mem- _
ber.
.
v
3. In a tenter as set forth in claim 2, in which said
reaching the fabric. When the rollers and tracks are
beads are covered with heat resistant plastic material.
con?gured as above described, the bottom of the chain
4. In a tenter, the improvement of a chain device com
is raised from the lower channel 22 so that drag and
prising link connecting chainrpins each having upper and
unnecessary ‘friction is eliminated.
Since certain changes may be made in the above 10 lower roller supporting spindle portions, upper and lower
construction and different embodiments of the invention
rollers mounted on said respective portions of each of said I
could be made without departing ‘from the scope thereof,
it is intended that all matter contained in the above de
scription or shown in the accompanying drawing shall be
pins, a tenter member carried by said pins and being nor
mally connected thereto at one end between said portions
and rollers and being provided at its free end with fabric
interpreted as illustrative and not in a limiting sense.
15 holding pins, housing means including a wall with upper
and lower track portions in which said rollers move when
It is also to be understood that the following claims
said chain pins are vertically disposed, each of said rollers
are intended to cover ‘all of the generic and speci?c fea
being capable of spinning freely when out of its respective
tures of the'invention herein described, and all statements
of the scope of the invention which, as a matter of
language, might be said to fall therebetween.
Having described my invention, what I claim as new
and desire to secure by Letters Patent is:
1. In a tenter, the improvement of a chain device com
‘track portion, and a pair of angular spring plates sup
20 ported by said housing means around said tenter member,
said spring plates having opposed portions adjacent said
fabric holding pins.
5. In a tenter as set ‘forth in“ claim 4, in which the
tenter member is perpendicular to said chain pins and an
prising link connecting chain pins each having ?rst and
second roller supporting spindle portions, ?rst and second 25 opening is provided between said track portions through
which said tenter member projects.
rollers mounted on said respective portions of each of
said pins, a tenter member carried by said pins and being
References Cited in the ?le of this patent
normally connected thereto at one end between said por
tions and rollers and being provided at its free end with
UNITED STATES PATENTS
fabric holding pins, and housing means including a bed 30
139,038
Bailey _______________ __ May 20,
[for said chain device and a pair of angular spring plates
‘ resiliently mounted on said housing around said tenter
member having opposed portions.
2. ‘In a tenter, the improvement of a chain device com
prising link connecting chain pins each having ?rst and
second roller supporting spindle portions, ?rst and second
rollers mounted on said respective portions of each of said
pins, a tenter member carried by said pins and being nor
mally connected thereto at one end between said portions
670,598
1873 .
Rusden _____________ __ Mar.'26, 1901
2,729,874
McCreary ____________ __ Jan. 10, 1956
2,894,334
Thygeson ______ _..'____ __ July 14, 1959
’
FOREIGN PATENTS
335,166
Germany ____________ __ Mar. 29, 1929
615
Great Britain __.__' _________ __ of 1881
1,557
Great Britain ______________ __ of 1900
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