Year: 1897

page_text: Date of Application, 1st Feb., 1897
Complete Specification Left, 1st Nov., 1897-Accepted, 4th Dec., 1897
1, ROBERT WILLIAMSON, of the Firm of Pott, Cassels and Williamson, Engineers
and Founders, Motherwell, in the County of Lanark, do hereby declare the nature
of this Invention to be as follows:-
This Invention relates to that class of conveyors wherein longitudinal swinging,
vibratory or reciprocatory movement of a trough or channel is employed to feed
forward granular or other material led into the trough, and it has for its object to
simplify the apparatus and to so vibrate the trough as to ensure the forward
movement of the material within it.
According to the present Invention the conveyor which is composed of a trough
or pipe has imparted to it longitudinal reciprocating motion which is relatively
slow in one direction and is rapid in the opposite direction or during the return
movement, so that the material is moved forward with the trough by its slow
movement in the one direction whilst the trough slips rapidly under the material
without overcoming its inertia during the backward or return movement, the
material being therefore moved or conveyed in the direction opposite to the quick
return movement.
The trough or pipe may be supported on rollers or slides or be otherwise guided
to slide freely back and forth; and the slow forward and rapid return movements
may be imparted to it by a connecting rod and crank, eccentric or cam having
varying rotatory movement or by elliptical gearing or by the device known as
Whitworth's quick return motion or by like means well known as applied to
machinery for transmitting slow forward and rapid return movement, or the slow
endwise movement may be effected by a cam or like mechanical device whilst the
quick return movement is effected by a spring or springs.
The bottom or bottom and sides of the trough or pipe may be stepped or corru-
gated after the fashion of a ratchet in order to facilitate the feeding of the material
and to prevent its backward travel on the rapid return movement of the trough.
Dated this 30th day of Tonname
1907
WALLACE FAIRWEATHER
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62 Saint Vincent Street, Glasgow. Agent for the Applicant.
"Improvements in Conveyors."
1, ROBERT WILLIAMSON, of the Firm of Pott, Cassels and Williamson, Engineers
and Founders, Motherwell, in the County of Lanark, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:—
This Invention relates to that class of conveyors wherein longitudinal swinging,
vibratory or reciprocatory movement of a trough or channel is employed to feed

page_text: forward granular or other material led into the trough, and it has for its object to
simplify the apparatus and to so vibrate the trough as to ensure the forward move-
ment of the material within it.
According to the present Invention the conveyor which is composed of a trough
or pipe A has imparted to it longitudinal reciprocating motion which is relatively
slow in one direction and is rapid in the opposite direction or during the return
movement, so that the material is moved forward with the trough by its slow
movement in the one direction whilst the trough slips rapidly under the material
without overcoming its inertia during the backward or return movement, the
material being therefore moved or conveyed in the direction opposite to the quick
return movement.
.
The Invention is illustrated by the accompanying drawings, figure 1 being an
elevation partly in section, figure 2 a plan, figure 3 a transverse section of the
apparatus used to communicate reciprocating movement to a trough or conveyor
and figure 4 a diagram illustrative of the motion communicated to the conveyor.
Figure 5 is a longitudinal elevation, and figure 6 a plan of a conveyor operated by
the above mentioned apparatus. Figures 7 and 8 are transverse section and plan
respectively of the conveyor and roller bearings.
The trough or pipe A may be supported on rollers B or on slides or be otherwise.
guided to slide freely back and forth; and the slow forward and rapid return
movements may be imparted to it by a connecting rod C and crank D, on a
spindle E or by an eccentric or cam having varying rotatory movement or by ellip-
tical gearing or by the device known as Whitworth's quick return motion or by
like means well known as applied to machinery for transmitting slow forward
and rapid return movement, or the slow endwise movement may be effected by a
cam or like mechanical device whilst the quick return movement is effected by a
spring or springs.
The device shewn by the drawings for imparting slow forward and rapid return
movements and which is a variety of the Whitworth quick return motion, com-
prises a driving pulley H in relation to which the crank spindle E is set eccen-
trically. A slotted arm F centred on the crank spindle E is actuated by a pin G
on the pulley H to impart the desired movements to the crank D the eccentricity
of the pulley and crank centre being such that during approximately one third
of a revolution of the pulley the crank is caused to make about one half revolution,
the other half revolution being performed during the movement of the pulley
through the remaining two thirds of its revolution as shewn particularly hy the
diagram figure.
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: -
1. In a conveyor composed of a pipe or trough having a longitudinal swinging
vibratory or reciprocating movement arranging and connecting the driving gear
to impart a relatively slow forward movement and a rapid return movement to
the trough or pipe substantially as and for the purpose set forth.
2. The combination with a pipe or trough conveyor of mechanism for imparting
to it a slow forward movement and quick return movement substantially as
described.