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Патент USA US2107433

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‘Feb. v8, 1938.
Filed Dec. 5, 1935
Patented Feb. 8, 1938
James L. Truslow and Robert J. McConnell,
Whitinsville, Mass, assignors to Whitin Ma
chine Works, Whitinsville, Mass, a corpora
tion of Massachusetts
Application December 5, 1935, Serial No. 52,970
6 Claims. (01. 19—131)
The invention relates to long draft spinning, held in notches l 2 formed in the front edge of the
more particularly to the cradle structure by side plates 5.
which the drafting aprons or belts are supported
The preferred form of separable attachment for
and guided, and its object is generally to improve
5 the serviceability of such cradles as will pres
ently appear, the outstanding advantages of the
invention, in its preferred form, being greater
cleanliness, the elimination of a source of danger
to the operative in existing cradles, and quicker
assembly and disassembly.
The drawing represents only the preferred form
of the invention but will serve to illustrate the
principles involved which can also be incorpor
ated in other cradle structures within the ?eld of
the claims.
Fig. 1 is a cross section ‘through a roll head
illustrating the use of the invention;
Fig. 2 a side elevation of the cradle closed;
axis occurs between the stretches of the top belt
3. It is formed by a lug l3 struck out from each
side plate l and a corresponding button-hole slot
Ill cut in the side plates of the rear section or in
the integral extensions, lie, of them which are 10
provided for the purpose, the lugs and slots being
so arranged that when brought together after
the manner indicated in Fig. 8, that is to say, in
a wide open position and then closed together,
as indicated in Fig. 3, the attachment prevents 15
separation of the sections while they remain
In the closing of the sections their lower hook
Fig. 3 of the same open;
shaped extremities meet around the bottom roll
Fig. 4 a plan of the closed cradle;
so as to provide smooth and substantially con
Fig. 5 a plan of the bottom bearing bar;
tinuous surfaces for guiding the edges of the
bottom belt E6 to reduce belt wear and, at the
Fig. 6 a front elevation of the closed cradle;
Fig. 7 a perspective of the front cradle section,
the front and rear cradle sections is a separable
hinge-joint which is located so that the hinge
same time, the hinge extensions 4a swing past
the notches l2 so that the bottom bearing bar
I I can be inserted under them in the notches thus 25
Fig. 8 a detail illustrating the mode of separa
The cradle taken for illustration is composed
snugly locking the two sections of the cradle to
gether in closed relation. The bearing bar II is
of front and back sections each of which is con
notched or shouldered ( i W) at one or both ends
stituted of a pair of side plates rigidly united by
a cross member. In the front section the side
plates are marked I and are rigidly united by a
cross member 2 in the form of a ?at-sectioned bar
shouldered at its ends and riveted in square holes
in the side plates forming a rigid unit. This bar
35 serves the double purpose of connecting the side
plates and of forming the front support or bear
ing for the top belt 3. The side plates of the rear
section are marked 4 and are similarly rigidly
united by a cross member in the form of a cross
plate 5 with angled wings 8, both the plate and
its Wings being ?rmly riveted into square holes
punched in the side plates. The plate is located
to serve as a roving de?ector for guiding a rov
ing end into the bite of the drafting belts as will
be apparent but such de?ector is not essential to
the broad invention and could be omitted.
The front and rear sections of the cradle as
thus formed are separably connected to each
other and are so constructed that when attached
to each other they clasp about the bosses of the
bottom roll 1 and together form a notch 8 (Fig.
2) for receiving the top roll 9 about which the
top belt is circled. The bottom belt i0 encircles
the bottom roll and is supported at its front end
55 by a bottom bearing bar H which is removably
to interlock with the side plate notches and is
normally retained interlocked with them by the
tension of the bottom belt which must be
stretched somewhat to permit the bar to be re
This mode of locking hinged cradle
sections by means of a removable belt bar and of
holding the latter in position by the tension of 35
its belt is disclosed and claimed in another ap
plication and forms no part of the present inven
tion except in combination with "the novel fea
tures herein disclosed.
When the cradle is to be disassembled the bar 40
I l is ?rst removed and, the top roll 9- having been
lifted from its notch and slipped endwise out of
the belt, the rear cradle section is swung up
wards and thus unlocked from the bottom roll >
and then separated from the hinge lugs i3, 45
whereupon the top belt 3 is removed from its
bearing bar 2 by passing it over one of the side
plates I either one of which has the appropriate
size or contour to permit such removal.
method of removing the top belt, it will be seen, 50
is rendered possible by reason of the absence of
the usual cross bar member joining the lower por
tions of the side plates. Heretofore the cradle
side plates have been joined together by such' a
cross bar, located just under the bottom belt. 55
The elimination of that bar, transferring its func
tion to the belt holding bar 2, also avoids the
collection of lint that normally accumulates on it
and at the same time eliminates the danger to
the operative involved in clearing away such lint
which is usually done with the ?nger. Reassem
bly of the belts and cradle is done with the top
belt ?rst applied to the bar of the front section
and then by connecting and clasping the sections
together about the bottom roll and slipping the
bottom bearing bar into position.
It will be seen that the invention broadly re
sides in the rigid cross-connection of the side
plates by means which are circled by the top belt
15 and which can therefore serve as the bearing for
such belt and in the making of at least one of the
side plates not too large to permit the belt to be
passed over it and whether or not such‘ side plates
are further connected, as they are in the present
20 case, by the belt-edge-guiding means which clasp
around the bottom roll, that is to say, by the part
herein termed the rear cradle section. It will be
understood also that cradles embodying the prin
ciple of belt support and removal above described
can be applied in various ways to long draft pur
poses, being shown in the present case as applied
to spinning frames, but being equally capable of
use in other relations where drafting belts are
used; and it will be further understood that while
the separable hinge is desirably of the type de
scribed, other forms of separable hinge or equiv
alent attachment will likewise su?ice.
We claim:
1. A long draft belt cradle comprising side
plates rigidly united by a single cross bar which
serves also as the bearing or support for the
drafting belt, such belt being removable from the
bar by passing it over one of said side plates and
means for attaching said plates in ?xed position
in relation to a draft roll.
2. The combination with top and bottom draft
ing rolls and belts thereon, of a belt-guiding
cradle composed of side plates and a single rigid
cross-connection between them, said cross-con
nection being located to be encircled by and form
a bearing for one of said belts which belt can be
passed over one of the side plates for removal
from said bearing and means associated with said 10
side plates for attaching them in ?xed relation
to one of the drafting rolls.
3. A long draft spinning cradle comprising front
and rear sections separably attached to each
other, the front section comprising side plates 15
permanently united by a belt bearing bar and the
rear section comprising side plates rigidly cross
connected to each other.
Zl. A long draft spinning cradle comprising
front and rear sections attachable to each other 20
by a form of separable hinge lug and slot, each
section comprising rigidly united side plates
notched to embrace a drafting roll.
5. A long draft spinning cradle comprising
front and rear sections attachable to each other 25
by a separable hinge lug and slot,- the front sec
tion comprising side plates rigidly united by a
belt bearing bar and the rear section comprising
side plates rigidly united.
6. A long draft spinning cradle comprising a 30
pair of side plates adapted to support and guide
the top belt, means rigidly uniting said plates,
said means being wholly located between the
stretches of the top belt, and means for attach
ing said side plates in ?xed but removable rela 35
tion to the drafting rolls.
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