A New or Improved Method of Regulating the Action of Bolting Machines, and Apparatus therefor.
Year: 1892

page_text: Date of Application, 5th Nov., 1892
Complete Specification Left, 5th Aug., 1893-Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
A New or Improved Method of Regulating the Action of Bolting
Machines, and Apparatus therefor.
I, NICOLAS VAN DUUREN of 117 Rue Verte, Brussels, in the Kingdom of
Belgium, Civil Engineer, do hereby declare the nature of this invention to be as
Follows:-
--
My invention relates to a method of and apparatus for regulating the action of
bolting machines of the cylindrical type in which there are internal circles or rings
to which the bolting cloth or silk is directly attached. In such machines the
bolting is more or less efficient or complete according as the said circles or rings
project to a greater or less height (from the circumference towards the centre) and
consequently as the material to be bolted slides over the cloth in a more or less
thick layer. My invention is designed to vary at will the said height of these
internal circles or rings within convenient limits.
In order that the nature of my invention may be sufficiently set forth for the
purposes of this Provisional Specification I shall now briefly refer to a bolting
machine to which my system of regulation is attached.
The central shaft of the bolting machine carries two cross bars on which are
fixed six trough-shaped irons. The internal rings or circles are constructed of
angle iron and are fixed to the trough-shaped irons by means of bolts and ties.
For each of the said rings or circles there are the following parts: (a) Six
segmental pieces which together form a complete circle. (6) Two arms or flat
pieces of sheet metal one on the left and one on the right of each annular segment
attached rigidly thereto and terminating at their free extremities by slots. The
arms or flat pieces belonging to each annular segment are parallel to one another
and parallel to the radius of the circle of which the segment forms part. The
said arms or flat pieces can only move in a direction parallel to the said radius.
(c) Guides fixed to the trough-shaped irons guiding the movement of the arms or
flat pieces and maintaining the annular segments against the said rings or circles
with an appreciable pressure. (d) Small levers furnished with studs engaging in
the slots at the free extremities of the arms or flat pieces.
A slight movement of rotation given to the spindles on which the levers are
fixed acts equally on the arms or flat pieces attached to the two extremities of
each annular segment. This movement causes the segment to approach to or
recede from the centre of the circle.
The concerted movement for the regulation of all the circles simultaneously is
effected by (a) Six spindles capable of turning in fixed supports within the bolting
machine. On these spindles are mounted all the levers corresponding to the
different circles. (b) Slotted or slide levers attached to the extremities of the
above mentioned spindles external to the bolting cylinder but within the case
containing the same. (c) A circular plate or disc furnished with six studs
engaging in the slots of the levers. This disc or plate is not fixed on the shaft
but is free to turn thereon through a certain distance. (d) A spur-wheel and
pinion the said spur-wheel being connected with the plate or disc, the pinion
gearing with the spur-wheel and fixed on a small spindle at the other extremity of
which latter is a hand-wheel. (e) A hand-wheel placed preferably outside the case
of the bolting cylinder and serving to actuate the regulating mechanism.
When the apparatus is in action all these parts are rotated except the shaft
carrying the pinion and the hand-wheel. To regulate the action the hand-wheel
is turned in one direction or another so that by means of the apparatus described
These
the segments are caused to approach to or recede from the centre.

page_text: segments approaching to or receding from the centre the height of the resulting
ring composed of the fixed continuous ring and that consisting of the segments is
varied. The movement is limited by a ring or collar fixed on the shaft and
furnished with a slot in which moves the head of a bolt fixed in the spur wheel
and the disc or plate. The segments being symmetrically arranged their extremities
touch when the movable ring is in its contracted position and are separated in
its expanded position. The construction herein before mentioned may of course be
modified within certain limits.
Dated this 5th day of November 1892.
NICOLAS VAN DUUREN,
Per J. G. L.
COMPLETE SPECIFICATION.
A New or Improved Method of Regulating the Action of Bolting
Machines, and Apparatus therefor.
I, NICHOLAS VAN DUUREN of 117 Rue Verte, Brussels, in the Kingdom of
Belgium, Civil Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
In cylindrical bolting machines with internal circles (or rings) on which the
bolting silk or cloth is directly attached, the bolting is the more efficient and
complete the higher these circles are (from the circumference to the centre), and
as the material to be bolted slides upon the silk in a more (or less) thick layer.
My method of regulation as hereinafter described allows the variation of the height
of the said internal circles within convenient limits and thereby enables the
efficiency of the bolting to be effectually regulated.
In order that the nature of my invention may the more clearly be understood
I shall now proceed to describe, with the aid of the accompanying drawings, one
manner in which I apply my invention to a bolting machine.
In the drawings,
Figure is a view showing a portion of the device used for regulating the
height of the internal circles in a bolting machine to which my method of regulation
is applied.
Figure 2 is a transverse section of a bolting cylinder to which my method of
regulation is applied, the upper half showing the half of one set of circles and
portions of the regulating devices, and the lower half showing showing half of
one of the circular frames for carrying the circles and regulating devices.
Figure 3 is a longitudinal section of a bolting machine to which my method of
regulation is applied.
The regulating system is applied to a cylindrical bolting machine consisting of
a shaft H carrying two circular frames on which are fixed six ☐ shaped irons R.
C are circles (or rings) of angle iron attached to the irons R by means of bolts
(and ties) K of a flat shape so as easily to pass through the material which is to be
bolted without stirring it. The diameter and the length of the bolting machines
to which the regulating apparatus may be applied may vary within very wide
limits according to the quantity and nature of the material to be bolted. The circles
(or rings) C of the cylindrical bolting machine are at distances of from six to
twelve inches apart. Their dimensions vary with the dimensions of the bolting
machine. P is that end of the bolting machine at which the material is introduced.
For each of the fixed circles C there are parts as hereinafter described.
S are six annular segments which together form a circle or ring of one half-inch
in height. This height is variable according to requirements. To each of the
segments S flat-bars L, B of unequal length are rivetted or soldered; namely, Lat
one end of each segment, and B at the other end. Levers M actuate the bars B
and levers M' actuate the bars L, by means of studs T. Similar parts are

page_text: connected with each segment. For the simultaneous movement of the whole (of
these circles or rings) there are six hollow spindles A at the inside of the bolting
cylinder. The levers M, M' are connected with these spindles, forming between
them an angle of sixty degrees. The rods B, L are guided in their movement by
the edges of the shaped irons R and by the studs T. Further, they are held in
position and guided in the heads of the levers M, M¹ grooved for that purpose or
formed by pieces adjusted so as to allow of the necessary movement, whilst
sufficiently maintaining the contact between the segments S and the fixed circles C.
At a slight rotation of the spindles A, the segments S all move towards or from
the centre to the same extent. Thus the movable circles, formed by the segments,
will increase or diminish in diameter when sliding on the fixed circles C and all to
the same extent.
In fact the interior circles of the bolting machine which form an obstacle to the
circulation of the material in the machine are formed by the angle-irons C and a
combination of six segments S, forming a movable circle. These two circles, fixed
and movable, form a complete obstacle circle, the height of which on the silk may
be varied at will within certain limits. The layer of the material which is to be
bolted will vary proportionately according to the turning more or less of the
spindles A. The spindles A are actuated by means of the levers D keyed on the
ends of said shafts outside of the bolting cylinder. Each one of these levers D is
provided at its free end with a guide-slot in which there takes a pin O which is fixed
on a disc E.
The disc E carries thus in this case 6 pins O; it is not keyed on the shaft H, but
rotates freely on the latter. On the disc E is keyed a gear-wheel Y engaging with
a pinion Y. The pinion Y¹ is keyed on a small shaft 1 rotating in a bearing
fixed to the frame-work 3 of the box which encloses the bolting cylinder and
revolves with it; the regulating hand wheel V is keyed on the other end of this
small shaft 1.
The height of the obstacle-circles is regulated by rotating the hand wheel V to
the right or to the left. The effect of this is obviously the same on all the movable
circles S, S, S, whose diameter is increased or diminished by the rotary movement
of the hand wheel V.
When once regulated, the bolting apparatus rotates with all the parts that are
fixed thereto.
These regulating parts remain in the relative positions imparted by the operator,
because the pressure of the various parts in contact is sufficient to prevent any
shifting.
In order to keep the displacement of the movable circles S within convenient
limits, the angle of displacement of the disc E on the shaft H is limited by means
of a square-headed stop bolt 1 fixed on the disc E. The head of the bolt 1 is
capable of movement in a recess formed in the ring F keyed on the shaft H mainly
shown in Figure 1. The edges of said recess necessarily limit the rotary movement
of the disc E.
The handwheel V may also be keyed directly on the nave of the disc E. In such
case, the gear wheels Y, Y, and the shaft 1 are dispensed with. The disc E is
operated directly to produce the effect just described.
When the regulating operation has been effected, all the parts fixed to the bolting
cylinder are kept in their respective positions by the pressure of the parts in contact
against one another.
The drawings represent six segments S for each circle but this number can be
varied with the dimensions of the bolting machine.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. The new or improved method of regulating the action of bolting machines by
varying at will the height of the obstacle-circles which are placed inside the bolting

page_text: :
machine and through which the materials to be bolted have to pass the obstacle-
circles being formed by two circles (or rings), one fixed and continuous, on which
the silk is stretched or mounted and the other variable and formed of segments:
the variable circle sliding on the fixed circle, while changing its diameter: the
movement of the variable circles being produced by the operation of a hand-wheel,
operating through gears, levers, and rods, substantially as above described.
2. The method of guiding the rods carrying the movable segments, without the
employment of special guides, but by means of levers with slotted heads in which
the rods are guided.
ay of August 1893.
J. G. LORRAIN, Mem. Inst. E.E., Mem. Inst. M.E.,
Norfolk House, Norfolk Street, London, W.C.,
Chartered Patent Agent,
Per A. P. W.