Improvements in the Manufacture of Flexible Tubing and for the Covering of Cores.
Year: 1899

page_text: Date of Application, 25th Mar., 1899
Complete Specification Left, 20th Dec., 1899-Accepted, 3rd Feb., 1900
Improvements in the Manufacture of Flexible Tubing and for the
Covering of Cores.
I, HENRY JAMES DOUGITY, of 940, Broad Street, City of Providence, County
of Providence, State of Rhode Island, United States of America, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
The invention relates to the manufacture of practically continuous tubes or
coverings of rubber, caoutchouc, balata, or like soluble material, and forms an
improvement on an invention for which I have already applied for Letters
Patent, and have described in a Complete Specification No. 989 and dated
January 16th 1899.
I have found in some countries, where the atmosphere is humid, the solvents
1 employ in carrying out my invention, such as naphtha, and other suitable
solvents, do not evaporate so rapidly as in a dryer climate, and that, as a conse-
quence, further means are desired to retain the joint or seam of the flexible
tubing longer in contact: also to bring such jointed edges tightly together,
and under the requisite pressure to enable satisfactory work to be turned out of
the machine as described in the specification aforesaid when employed in countries
or localities which have the peculiar atmospheric conditions herein indicated.
To accomplish this and to effect my present improvements, I mount at any
convenient point in the rear of the machine described in my former specification
a supplementary bed or table just behind or in lieu of the roller carrying the
presser discs, as therein described, and to which bed I attach by screws or other
suitable means, a series of guide plates having two angular and converging
grooves therein, and behind this bed plate and guide plates I mount three
rollers, preferably one above the other, all or part of which may be geared up
to the machine. Passing round the centre roller of these three, and between
the guide plates and the bed to which they are attached, is a band or belt, of
suitable material, which passes over and around the bed plate aforesaid, and in
addition there are continuous narrow bands, two for each guide plate, and one
for each angular converging groove, which also pass between the guide plate
aforesaid and then around the upper of the three rollers. These grooves, after
being separate for a short distance, converge into one groove just broad enough
to take in the two bands. By which it will be seen that the two bands are, by
the one guide plate, and on entering the same, drawn gradually together laterally,
as they travel longitudinally. Now, between these travelling bands and the
band or belt on the bed plate, the already formed tube, with its butt joint, as
made by the machine previously described, is drawn by means of the geared
rollers at the rear thereof, above named; so that when the presser roller bears
upon the narrow bands aforesaid, and they in turn bear upon the butt joint of
the india rubber or other tube, the effect is to draw more tightly the naphtha-
prepared edges together and to hold them in that position for a sufficient length
of time, and with sufficient pressure, to enable proper evaporation and adhesion

page_text: to take place in countries or localities where there is considerable humidity in
the atmosphere.
Variations in detail, such as the dimensions of the bed or table and its
attached guide plates together with the shape or angle of the convergent grooves;
also in the number and arrangement of the supplementary draw rollers, and
the arrangements for gearing such of them as are requisite to be geared, and
the arrangement and form of the pressure roller or rollers, also the constitution
of the travelling bands, may be made without departing from the peculiar
character of the invention.
...
بيت
1900
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.
Improvements in the Manufacture of Flexible Tubing and for the
Covering of Cores.
I, HENRY JAMES Dorcury, of 910, Broad Street, City of Providence, County
of Providence, State of Rhode Island, United States of America, Manufacturer,
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:-
-
The invention relates to the manufacture of practically continuous tubes or
coverings of rubber, caoutchouc, balata, or like soluble material, and forms an
improvement on an invention for which I have already applied for Letters
Patent, (and have described in a Complete Specification), No. 989 and dated
January 16th 1899.
I have found in some countries, where the atmosphere is humid, the solvents
I employ in carrying out my invention, such as naphtha and other suitable
solvents, do not evaporate so rapidly as in a dryer climate, and that, as a conse-
quence, further means are desired to retain the joint or seam of the flexible
tubing longer in contact; also to bring such jointed edges tightly together,
and under the requisite pressure to enable satisfactory work to be turned out of
the machine as described in the specification aforesaid when employed in countries
or localities which have the peculiar atmospheric conditions herein indicated.
To accomplish this, and to effect one form of my present improvements, I
mount at any convenient point in the rear of the machine described in my former
specification a supplementary bed or table just behind or in lieu of the roller
carrying the presser discs, as therein described, and to which bed I attach by
screws, or other suitable means, a series of guide plates having two angular and
couverging grooves therein, and behind this bed plate and guide plates I mount
several rollers preferably one above the other, all or part of which may be geared
up to the machine.
Passing round one of these rollers, and between the guide plates and the bed
to which they are attached, is a band or belt of suitable material, which passes
over and around the bed-plate aforesaid; and, in addition, there are continuous
narrow bands, two for each guide plate and one for each angular converging
roove, which also pass between the guide plate and bed aforesaid and then around
nother of the rollers. These grooves, after being separate for a short distance,
nverge into one groove just broad enough to take in the two bands. By
ich it will be seen that the two bands are, by the one guide plate, and on

page_text: prepared edges together and to hold them in that position for a time, as already
described.
The tube, with its finished joint, as it emerges from between the travelling
bands h, H, may be supported and removed from the apparatus by a carrier
band K, or otherwise, as desired.
The tubes J, may be fed forward to the apparatus described by travelling
bands j, passing round the roller c.
Figs. 3, and 4, show a reverse plan and longitudinal section respectively, of
one of the guide plates D), on a larger scale; the converging grooves d, being
clearly indicated; and Fig. 5, is an enlarged front-end view of two of such guide
plates D, in position upon the bed-plate B, the bands h, and H, being shown in
one case only.
In carrying out my improvements according to Figs. 6, and 7, I dispense with
the guide-plates 1), and cause the converging travelling bands h, to pass round
two rollers L, M, the roller L, being provided with two flanges or guides for
cach pair of bands h, while the roller M, is provided with three such flanges.
These flanges effect a result corresponding to that of the grooves in the guide-
plates aforesaid, the bands being separated while they pass round M, but drawing
together as they approach the roller L. Two other rollers N, O, are shown to
enable the bands h, to press effectually upon the tube J, and the rollers L, M, N, O,
may all or part he geared in any suitable manner, but in this example N, is driven
from O, by strap a, and it may be driven by a strap over the pulley p, from any
source of motion, while L, and M. are driven by contact of N, and 0.
The roller O, may also serve to drive carrier bands j, which feed forward the
tubes J.
A removing carrier band K, is also shown, as in the former case represented
by Figs. 1, and 2.
Figs. 8, and 9, are a plan and cross section respectively, on a larger scale, of
a portion of the two rollers L, M, one set of bands h, being shown in position
thereon; and, in these views, a middle guide piece r, to further ensure the cor-
rect action of the bands h, indicated.
The roller L, is here shown mounted upon the framing A, of the apparatus,
but the roller M, is mounted upon an arm S, at each extremity, such armis S,
being pivotted on L. This enables the shaft M, to be turned over upon L, as
a fulcrum, the roller N, being previously removed, whereby the condition of the
tube beneath may be inspected, without disturbing any of the bands h, in rela-
tion to their guides.
"
former' от
In Figs. 10, and 11, an adaptation of the invention to the "
"shaper" of a tube making machine is indicated, which may be substituted for
the guide plates, or guide rollers.
b
65
The
T, is a former" or shaper," provided with converging grooves u.
bands h, are indicated in dotted lines, and, in similar manner, a core or man-
drel V, to offer resistance, is shown.
Variations in detail may be male, such as in the dimensions of the bed or
table and its attached guide plates, together with the shape or angle of the con-
vergent grooves; also in the number and arrangement of the supplementary
draw rollers and the arrangements for gearing such of them as are requisite to
be geared, and the arrangement and form of the pressure roller or rollers; also
in the constitution of the travelling bands; and the improvements are applicable
for making the improved joint in strips of rubber, whether in tubular form or
otherwise, without departing from the peculiar character of the invention.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. In apparatus for joining rubber or like flexible material, in the manufacture
1 then aulinamily iained

page_text: material under the operation of travelling bands which are so guided as to
approach each other as they travel and thereby to force the joined edges tightly
together, for the purpose and in manner substantially as herein shown and
described.
2. In apparatus for joining rubber or like flexible material, in the manu-
facture of flexible tubing and in the covering of cores, a device consisting of
guide plates D, mounted on a bed-plate B; these carrying converging bands,
and belts H, which pass round rollers e, g, driven through rollers E, G; the
material J, being passed between the bands h and H, for the purpose and in
manner substantially as herein shown and described.
3. In apparatus for joining rubber or like flexible material, in the manufacture
of flexible tubing and in the covering of cores, a device consisting of guide
rollers L, M, mounted between driven presser rollers N, O, and carrying_con-
verging bands h; the material J, being passed between such bands h, and the
bands, passing round the roller O, for the purpose and in manner substantially
as herein shown and described.
&
4. In apparatus for joining rubber or like flexible material, in the manu-
facture of flexible tubing, and in the covering of cores, a device consisting of
"former" or "shaper" T, provided with converging grooves u, and travelling
bands h, running within such grooves, the tube or material being drawn within
the "former or "shaper" between such bands h, and a mandrel or core V, or
other resistance, for the purpose and in manner substantially as herein shown and.
described.
"
WILLIAM GADD, C.E..
64, Barton Arcade, Manchester, Agent for Applicant.