Improvements in Shaking Tables and Packing Machines.
Year: 1896

page_text: Date of Application, 25th June, 1896-Accepted, 25th July, 1896
COMPLETE SPECIFICATION.
Improvements in Shaking Tables and Packing Machines.
WILLIAM WORBY BEAUMONT of the Outer Temple 222 Strand London 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 ascertained in and by
the following statement :-
My invention relates to the construction and operation of shaking or packing
tables, as required for causing materials such as tea, flour, ground grain bran and
the like, to settle down into boxes bags or other packages or containers, into a
compact mass, without the aid of pressing apparatus which as in the case of tea
and other friable substances, would cause breakage and reduction in value of the
material packed.
According to my invention, the shaking or vibrating table is preferably mounted
on coiled springs, and vibratory movement is communicated to it by means of a
vibromotor which has an excentric unbalanced weight carried by a spindle which
runs in bearings fixed to the table.
Preferably this vibromotor spindle is horizontal, and its rotation at high speed
with the unbalanced weight, imparts to the table a vibration generally of small
amplitude, and in all directions normal to the spindle as a centre of disturbance.
This vibromotor spindle may however run in a vertical bearing or bearings, and
it, with the unbalanced weight, will impart the vibratory movement in all directions
in uzimuth.
The method of construction of the apparatus for imparting the movement herein
described is such that the whole of the energy expended in rotating the said spindle
is absorbed in giving the vibratory movement to the table, the inertia of motion
and of rest of the table being equal and opposite aud therefore automatically.
balanced by the inertia of motion of the unbalanced weight-as described in the.
Specification of the Patents No. 9953 of 1892, 13,866 of 1893, and 20,148 of 1893,
granted to me.
My invention thus enables me to impart to a vibrating table, a very high
frequency of vibration without causing material vibration of either the frame of.
the machine itself, or the floor or building on which it stands, to accomplish this
with an exceedingly small power and to construct packing tables of simple and
efficient forms.
The drawings hereunto attached, shew the construction of packing or vibrating
tables according to my invention.
Figs. 1, 2, 3, & 4, are respectively, side elevation, end elevations, and plan of a
packing or shaking table, made according to my invention, and Fig. 5. is a section
on line a-a of Fig. 4.
Figs. 6 & 7 shew in section and in plan, an alternative form of table, detached
from the apparatus for operating it.
Figs. 8, 9 & 10, are details shewing the spindle and unbalanced weight.
Figs. 11 & 12 are respectively, side elevation, and plan partly in section of a
shaking table operated by a vertical spindle vibromotor, or. unbalanced weight on
a vertical spindle instead of upon a horizontal spindle.

page_text: Figs. 13 & 14, are section and plan of the unbalanced weight and spindle by
means of which the vibratory action is obtained.
In Figs. 1, 2, 3, & 4, A, is a bed plate carrying bearings B, in which runs a
spindle C, driven by a belt, on pulley D, or other means of rotation, and driving a
hooked or jointed rod E, which in turn drives a spindle F, running in bearings G,
attached to the table H resting upon spiral springs L which are attached both to
the table H, & to the bed plate A.
Upon the spindle F, are attached either a single or a pair of bars K, forming an
excentric weight, the inertia or momentum of which, when the spindle is revolved,
set up a vibratory movement in the table H, a movement which is provided for or
permitted by the springs L which support the table.
In Figs. 1, 2, 3, 4 & 5, the table H is shewn as being made of wood, and
as being surrounded by an iron edging or rim N, shewn in section Fig. 5.
For many purposes, the packing of materials such as tea, in boxes, may be
effected by simply placing them as shewn at C', Fig. 1, upon the table H, and
they may either fit within the rim N, or pieces of wood or wedges may be employed
to limit the lateral freedom of the box upon the table, or to prevent its movement
laterally altogether except with the table.
In some cases I employ an iron table made as shewn in Figs. 6, & 7, in which
H is a plate of iron, stiffened by angle irons riveted at H' under the bottom edge.
The plate is stiffened in the other direction by the angle iron N, which is held to
the plate by means of bolts and nuts which pass through holes V, V, so that the
piece N may be adjustable as to distance from the angle piece N. The angle
piece N', is moveable by means of a screw W, working in a nut O, turned by a
handle or hand wheel at F, and running in a fixed bearing at M.
The angle piece N' is attached to the flanges of the nut O by means of bolts
which also pass through distance pieces D, slightly thicker than the plate H, and
free to move in the slots X, X.
By these means a box placed upon the table H, may be gripped as in a vice.
In the arrangements shewn at Figs. 11 & 12, the table H is supported on
springs L, L, as previously described with reference to Figs. 1, 2, 3 & 4. At one
end of the table H is attached a bearing G, in which rotates a spindle F, driven
by the hooked or otherwise articulated rod E, suspended from a spindle C, in the
bearing B, and driven by a belt, on pulley D.
Upon the lower part of the spindle F, is a pulley P¹ upon which runs a belt C,
by which motion is given to the pulley K', one side of which has formed or attached
to it, an unbalanced weight K, as shewn in Figs. 13 & 14. This pulley K' forms
the vibromotor weight; it rotates upon a vertical spindle Q, Fig. 13, fixed in a
boss T; when the unbalanced pulley is rotated, it sets up a vibratory movement
in that to which it is attached, namely, the shaking table and packing table H.
For the purpose of maintaining a desired amount of tension on the belt C', a
jockey pulley V, running on a stud spindle, mounted on an arm Z, is employed as
shewn, the arm Z being pulled towards the belt by a spring V', and an adjusting
screw X, as shewn in Fig. 12.
For the lubrication of the spindle Q upon which the unbalanced weight K rotates,.
the upper part of the spindle is made hollow as shewn at Fig. 13, the hole for the
lubricant being covered by the screw plug S. On the bottom of the spindle Qis
fixed a saucer R which serves to keep the pulley in its place, and to carry
lubricant.
The bearing B, is supported by and forms part of the casting shewn in section
in the plan Fig. 12.
In place of the springs carrying the table as shewn in Fig. 11, the table may be
supported by what are known as wood springs, hangers, or by suspenders of forms
well known in sifters used in flour mills, or by means of chain, leather, wire, rope,
or other suspenders attached to supports fixed on the bedplate A, and suspending
the table H by well-known means of attachment and adjustment.

page_text: Having now 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 shaking or packing tables consisting of the combinations of vertical or
horizontal spindle vibromotors with a table mounted on springs or suspenders and
carried on a bed plate, substantially as herein described and shewn.
Dated this 19th day of June 1896.
W. WORBY BEAUMONT.