Improvements in Stands and Saddles for Wet Spinning Frames.
Year: 1893

page_text: Date of Application, 26th July, 1893
Complete Specification Left, 23rd May, 1894-Accepted, 23rd June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Stands and Saddles for Wet Spinning Frames.
We WILLIAM SCOTT of 76 Agnes Street Belfast, Co. of Antrim, Ireland,
Engineer, and JAMES MACKIE, Ålbert Foundry, Albert Street, Belfast, Co. of
Antrim Ireland, Machine Maker, do hereby declare the nature of this invention to
be as follows:-
These improvements have mainly reference to the use of "divided saddles" and
are intended to secure the advantages claimed for these saddles, without being
obliged to use a third part, or bridge, to convey pressure to them.
They also refer to the use of flat sliding pieces moving on straight lines in slots,
for the purpose of guiding the bottom pressing rollers.
are as follows:-
Some of the advantages claimed for these "divided saddles"
(1) The ensuring of greater accuracy of reaching in pressing rollers.
(2) The better distribution of weight on drawing and retaining rollers.
(3) The prevention of the jerking movements of the bottom roller being
communicated to the top one.
(4) The easier application of full weight, on retaining rollers, at long reaches.
(5) The simplification of saddles and stands as applied to three rollers, and as
applied to two top pressing rollers, working on a back roller common to both.
To secure these advantages we use arrangements of "divided saddles" with
suitable forms of "stands" to guide and control them.
In most of these forms the weight is conveyed directly by, or through one part of
the saddle to the other, without the intervention of a third portion or bridge.
The saddles may be either with or without arms; and either the top or bottom
portion of the saddle may be used to convey the pressure as may be found
convenient.
In one form-when the reach is long enough to admit of it-the nose of the
stand projects out from between the rollers, and has one vertical slot to receive the
The
body of saddle, and two horizontal slots to receive the guiding pieces or arms.
bottom slot is perpendicular to the face of the rollers to ensure correct position of
bottom pressing roller at varying diameters. The movement caused by varying
diameters of bottom roller does not practically affect the position of the top one.
The bottom part of the saddle is made of T shape, the cross pieces at end being
the guides for same, moving up & down the bottom horizontal slot.
The top part of saddle, to which the weight is conveyed, by a spring wire, in
the ordinary way, is made long enough to pass down over the above-mentioned
bottom part, pressing on it at a point directly over the journal of bottom roller.
Projecting arms are made on it which engage with the top horizontal slot in the
stand, thus keeping the top roller in proper position.
When three rollers are used, as where drawing is done by two sets of rollers, we
use only one spring wire, lever and weight, and one stand.
This stand is placed between the two upper rollers, and has one vertical slot to
receive the body of both saddles, and one horizontal slot in middle of stand to
receive the arms of top part.
The saddle is made in two parts, the upper part controlling the two upper rollers,
and having slots and slides at both ends, for reaching purposes; it is guided and
kept in place by arms projecting from the sides, about the middle, and engaging
with horizontal slot in stand. The bottom part of saddle passes outside the upper
one and inside the vertical slot in stand. It has slots in sides at upper end which
fit over and press on the projecting arms of upper saddle.

page_text: The weight is conveyed by a cranked spring wire to the bottom half of saddle,
which presses at one end on axle of bottom pressing roller, and at top end on arms
of upper saddle; by this meaus pressure is put on three rollers by a divided saddle
without using a "bridge."
When using two top pressing rollers, working on a back roller common to both,
we secure the correct line of pressure on both of these rollers, by making the top
slide of saddle with a bracket at each end slotted to receive two sliding bushes in
which journals of rollers rest. Said slots are placed so that when the medium
bottom pressing roller is in saddle, a line drawn through the centre of their respective
pressing rollers, and the centre of the back roller, passes through the middle
of slot.
The before mentioned top slide, at a point between the slotted brackets, presses
on the middle of a curved bridge, which, at its ends press on the backs of sliding
bushes aforesaid.
Where short reaches are required we carry the stand over the top of rollers.
The nose of the stand may be made as described in the arrangement for working
three rollers. The arrangement of saddles, as regards their position to each other,
and to the stand being also the same.
Or the nose of stand may pass into a slot in the top of saddle; pins project from
stand on both sides and engage with corresponding slots in saddles.
Both parts of saddles are slotted to pass over these pins, the top part resting on
them, the bottom part moves freely over them using them merely as guides.
The weight in either form is conveyed by the body of bottom half of saddle
pressing on a corner of the top slide, which is made wide enough for the purpose;
or on a projection formed on the top half of saddle.
When moderate weight is wanted on the top roller the pressure is above the
centre, the saddle being slotted from back to front, and pressing on the front of pins
of stand. But if greater weight is required, the pressure is applied below the
centre, the slotting being then front to back and pressure is on back of aforesaid
pins.
Dated this 24th day of July 1893.
WILLIAM SCOTT.
JAMES MACKIE.
COMPLETE SPECIFICATION.
Improvements in Stands and Saddles for Wet Spinning Frames.
We, WILLIAM SCOTT of 76 Agnes Street, Belfast in the County of Antrim,
Ireland, Engineer, and JAMES MACKIE of Albert Foundry, Albert Street, Belfast,
in the County of Antrim, Ireland, Machine Maker, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
These improvements have reference to the use of divided saddles, and in most
forms are intended to secure the advantages claimed for these saddles, without
using a third part or "bridge," to convey pressure to them.
They also refer to the use of stands having straight slots in which saddles made
with flat sliding pieces, move, for the purpose of guiding the bottom pressing
roller.
Also to saddles for use when very small retaining rollers are employed, and set
below the centre of back roller for obtaining shorter reaches.
Some of the advantages claimed as attained when these divided saddles are used
are as follows:-
1. The better distribution of weight on drawing and retaining rollers at varying
reaches.

page_text: 2. The ensuring of greater accuracy of reaching in pressing rollers, by preventing-
that movement of retaining roller, which takes place in the undivided saddle when
the diameters of bottom pressing rollers are much varied.
3. The prevention of jerking movements of bottom pressing rollers, which takes.
place when the arms or pins are worn, being communicated to the top rollers.
4. The easier application of full weight on retaining rollers at long reaches.
5. The simplification of saddles and stands as applied when drawing is done.
between three pairs of rollers by distributing pressure on these rollers without
using a second spring wire.
In order to secure these advantages we use novel arrangements of divided saddles.
with suitable forms of stands to guide and control them.
In most of the forms used the weight is conveyed directly by one part of saddle
to the other, but in some of them a "bridge" may be used, through which the
pressure is distributed to the upper and lower rollers.
The saddles may be made with or without arms and either the top or bottom.
part may be used to convey the pressure as may be found convenient.
DESCRIPTION OF DRAWINGS.
Fig. 1 shews in side elevation a form of stand A and saddles B, C, in which
the saddle B, for the lower pressing roller, (also shewn with stand separately in
Fig. 2) is made to slide vertically towards the line of nip a, b, of the rollers by
means of the projections d, d, passing into vertical slots in the stand A, thus.
ensuring a correct position of bottom pressing roller X at all diameters.
Above the slots é, e, are other slots which receive the arms or pins ; of the upper-
saddle C; these slots are made at such an angle as to keep the retaining roller Y
approximately on centre when diameter of bottom rollers is changed.
The upper part of saddle, shewn separately in Fig. 3, to which the pressure is.
applied in the ordinary way at about the point h, conveys pressure to the bottom
saddle through its lower extremity at a point i immediately over the centre of the
journal of pressing roller X.
Fig. 4 shews a stand in which the saddle for bottom pressing roller fits as in
Fig. 1, but the upper saddle C is hinged upon a pin j fixed to a projection on each
side of stand A. The pressure is applied to both saddles by means of a "bridge" P..
When the top pressing roller has its centre at a point between the hinge j and the
point of contact K of the "bridge" the pressure on that roller is increased by the
leverage that on bottom roller remaining constant.
Fig. 5 is a form of stand and saddles adapted for use when short reaches are:
required; the stand A, coming over and outside the rollers, is slotted to receive
the saddle B controlling the bottom pressing roller X. This saddle has a curved
slot and moves about the pin j fixed in stand A. It receives the pressure from a
spring wire about at point h. Its upper part is slotted as shown in plan Fig. 8 to
receive the upper saddle C, also in plan Fig. 9 which controls the top pressing
roller Y.
The saddle C is hinged upon the pin j.
Pressure is conveyed by the lower saddle B to the upper one C through projecting
pieces 1, attached to the sides of C upon which the sides of B rest.
When the top pressing roller Y has its centre at a point between ; and the
pressure on that roller is increased by the leverage.
When a very small top pressing roller is used for obtaining short reaches, and is
set at a point below the centre of back roller as in Fig. 6 the pin j in stand A is.
so placed that a radial line r, r struck from its centre passes through the centres of
the two retaining rollers. The pressure is applied as in Fig. 5. By this means we
secure the same free action of the flutes rolling on each other as when the rollers-
are placed in their normal position.
Fig. 7 shows a stand and saddles similar in principle to Figs. 5 and 6 but adapted.

page_text: "
for carrying two top pressing rollers Y, Z. The bearing block or
slide' m
holds both rollers; the bottom one Y in a fixed bush, the top one Z in a loose bush
moving in a slot.
The positions of the pin ; and roller Y are regulated as in Fig. 6 and for the
same purpose. The slot in which the roller Z is carried is made so that the centre
line if projected passes through the centres of Z and Y'.
A small "bridge" P lies on the back of the slide m over the roller Y and on
the bush over the roller Z receiving pressure from the saddle B at the point h.
The radial position of the roller in relation to the pin j and the back roller Y',
as in Fig. 8 together with the slot pointing towards the centre of Y₁ causes the
lines of pressure upon the two rollers Y and Z to converge towards the centre of
the back roller Y¹.
Fig. 10 shows a stand and saddles for three pairs of rollers. The saddle C
controlling the two upper rollers is kept in position vertically by the pin j passing
into the slot in stand A.
Pressure is applied to the lower saddle B in the usual way.
this saddle pass up each side of saddle C and rest upon the
municating pressure to the upper rollers Y and Z.
Figs. 11 and 12 shew elevation and plan of saddle C.
Figs. 13 and 14 shew elevation and plan of saddle B.
The two sides of
pins j, j thus com-
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
In wet spinning frames
1. The construction and use of saddles made in two parts one for each pressing
roller acting independently, in which pressure is conveyed directly from one part
to the other, without the use of a third part or "bridge."
2. The construction and use of stands and divided saddles having straight slots
in the stands and guiding pieces on the lower saddle causing it to move in a
straight line vertical to the line of "nip" of the rollers, as described with reference
to Fig. 1.
3. The construction and use of a combination of divided saddles enabling a
single small pressing roller to be employed on the back roller working at a point
below the centre of said roller to secure very short reaches, substantially as
described with reference to Fig. 6.
4. The construction and use of two small retaining pressing rollers, the lower
one being held in a bush so as to act substantially as in the construction described
in Claim 3; the upper pressing roller to be guided in a slot made to point towards
the centre of the back roller, the two receiving pressure through a "bridge,"
substantially as described with reference to Fig. 7.
5. The construction and use of divided saddles in which the pressure is conveyed
to three rollers by one spring wire substantially as described and shewn.
Dated the 23rd day of May 1894.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicants.