Improvements in or connected with Bolting Machines.
Year: 1899

page_text: Date of Application, 27th Feb., 1899
Complete Specification Left, 27th Nov., 1899-Accepted, 27th Feb., 1900
I, FREDERIC BRANDSTAEDTER, of Chaussée de Ninove 20, Brussels, Belgium,.
Engineer, do hereby declare the nature of this invention to be as follows;-
The object of the present invention is to prevent the clogging of bolting cloth
or silk in bolting or sifting machines.
This is effected by attaching the silk or bolting cloth to rods or the like which
are so mounted in a bolting frame and so operated therein that they are capable
of longitudinal movement in any desired direction with respect to the frame and
so that they reciprocate each in a direction opposite to its neighbour. The con-
sequence is that during movement of the said rods the meshes of the silk or cloth
are alternately stretched in opposite or in different directions.
This opening or closing, as it were, of the meshes (or in other words this alter-
nate pulling in different directions) serves to keep them clean and free from clog-
ging, and great advantages, as will be readily understood, are thus secured.
The motion of the rods during the movement of the bolting frame may be pro-
duced by any desired means, such for example as cams, jogging planes or projec-
tions or the like.
Improvements in or connected with Bolting Machines.
I, FREDERIC BRANDSTAEDTER, of Chaussee de Ninove 20, Brussels, Belgium,
Engineer, 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 object of this invention is the keeping of the meshes of bolting silk or
cloth in proper condition by automatically preventing them from becoming
clogged. The principle on which this is based is the employment of rods or the
like arranged transversely, longitudinally or diagonally in either direction in the
frame of the bolting machine these rods on which the bolting cloth is fixed, being
arranged so as to be fixed or movable according to the methods of bolting adopted,
and the material to be treated. The object of this arrangement is, that whilst
the bolting frame is in motion, an alternating movement of the rods may be
induced so as to stretch the silk in opposite directions and open and re-close the
DQ77

page_text: meslies or vice versa so that the silk being thus stretched in opposite diagonal
directions, its meshes are in consequence automatically cleaned and constantly
kept in proper condition. The cleaning is also effected by means of the shaking
caused by the movable rods in bearing or striking against the sides of the bolting
frame.
In the accompanying drawing:
Figure 1 is a plan view of one practical form of the invention, furnished by
way of example.
Figure 2 a similar view of a second form.
Figure 3 a similar view of a third form.
Figure 4 is a longitudinal vertical section, along the line y y in Figure 1, and
Figure 5 a transverse vertical section of Figure 1, along the line.
Figures 6 and 7 are cross sectional views shewing respectively the gauze
stretched towards the right and toward the left by the movement of the rods, the
latter being guided by a device differing from that represented in the preceeding
figures; and
Figures 8 and 9 are detail views representing the movement of the gauze rela-
tively to that of the rods.
As will be observed in Figures 1, 2, 3 and 5, 6 and 7, rods, a bare arranged
transversely in the frame A, so that they can move longitudinally without rotat-
ing on their axes, and thus in consequence of the eccentric rotary motion of the
frame A the rods a are moved to the right and left. Thus the silk gauze is alter-
nately stretched right and left by the motion of the rods to which it is attached
(see Figures 6 and 7) the meshes in consequence being successively opened and
closed.
The gauze f is fixed to the rods in any of the well known ways but with suffi-
cient slack between the frame and the rods to allow it to follow the movements of
the rods, sticks or reels and not so tightly as to prevent the opening and closing.
of the meshes as is shown in Figures 5, 6 and 7.
The rods a and b may be arranged in the longitudinal instead of the transverse
direction of the frame A.
Figure 2 is a variation of the form shown in Figure 1. In this case, the rods h
are fixed, the rods being movable. The result is the same as under the pre-
ceeding arrangement and in order that the facility of displacement and the mobility
of the silk gauze may be increased, the fixed rods may be arranged so as to be
capable of rotating on their axes. Thus in the form shown in Figure 2 the gauze
is stretched less than in that represented by Figure 1, in which the tension is
greater in the longitudinal than in the transverse direction of the bolting frame.
Figure 3 shows another variation of Figures 1 and 2. Here, the rods, sticks or
reels a¹ and are placed diagonally in the frame A". The result is the same as
under the preceeding arrangements and one of the rods, may be fixed and the other
movable as described in connection with the second variation. By this arrange-
ment, the flour is moved forward in a horizontal direction.
The course of the flour is indicated in the three forms, by means of the arrows.
In the three variations the arrows indicate the way in which the flour travels.
In rigures and 7 the rods are guided by metal wires m stretched between the
edges of the bolting frame and operating in the manner already indicated.
From these arrangements it results that, in consequence of the eccentric rotary
motion of the bolting frame, the rods are displaced by the force of propulsion of
the material in motion, and communicate to the silk gauze vibrations which effec-
tually prevent the clogging of the meshes. It should be further observed that
by the special manner of attaching the gauze to the rods and the sides of the
bolting frame, an alternating oblique or diagonal tension is produced, that is to
say, a tension alternating as regards its direction and opening or closing the meshes
and so preventing their becoming clogged. A considerable increase in the yield
of sifted material is thus obtained.
When the gauze is fixed on the rods a b, and the latter occupy the position

page_text: indicated in Figure 8, the meshes of the gauze will present their normal shape
and dimensions; but when owing to the rotation of the bolting machine the rods a
come against the left hand edge g, then the gauze assumes the stretched position
indicated in Figure 9. Now owing to this tension and to the concussion of the
rods against the sides of the bolting frame, the said rods return to their initial
position and cause the gauze to be again slackened. As the movement of the
bolting frame is continued, the rods come in their turn against the side on
the right hand of the frame and operate in the same manner as in the case of the
rods a.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
The means for alternately opening and closing the meshes of bolting cloth or
silk substantially as set forth.
Dated this 27th day of November 1899.