IMPROVED APPARATUS OR MACHINERY FOR OBTAINING ADJUSTABLE INTER- MITTENT MOTION SUITABLE FOR SYRUPING MACHINES, FOR ACTUATING PUMP PROVISIONAL SPECIFICATION
Year: 1880

page_text: LETTERS PATENT to William Bramley Dewhirst and George Barker, both
of the City of Manchester, in the County of Lancaster, for an Invention of
"IMPROVED APPARATUS OR MACHINERY FOR OBTAINING ADJUSTABLE INTER-
MITTENT MOTION SUITABLE FOR SYRUPING MACHINES, FOR ACTUATING PUMP
PROVISIONAL SPECIFICATION left by the said William Bramley Dewhirst
and George Barker at the Office of the Commissioners of Patents on the 5th
May 1880.
WILLIAM BRAMLEY DEWHIRST and GEORGE BARKER, both of the City of
Manchester, in the County of Lancaster. "IMPROVED APPARATUS OR MACHINERY
FOR OBTAINING AN ADJUSTABLE INTERMITTENT MOTION SUITABLE FOR SYRUPING
MACHINES, FOR ACTUATING PUMP PLUNGERS, SLIDE-VALVES, AND FOR OTHER
ANALOGOUS PURPOSES."
Our Invention consists in so constructing and arranging mechanism as to obtain
a rapid vertical or horizontal motion at any given point in the revolution of a crank
carried by a continuous straight shaft, without there being any motion at any other
point, the distance traversed being regulated at will from zero to the extent of
the radius or throw of the crank, and which motion is suitable for the purposes
indicated above.
In carrying out our Invention, we employ a crank pin of the desired throw or
radius, and mounted by preference in a disc carried by the revolving shaft. This
crank pin is arranged to work in a suitable box provided with a slot for the crank
pin ferrule to work in, and with an adjustable sliding jaw fixed in any desired
position by means of a set-screw, this movable jaw enabling the movement of the
box to be regulated to the greatest nicety, so as to stand still during any desired
portion of the revolution of the crank pin, and to move the box forward during the
remaining portion of the revolution, and thus by suitably connecting such box to
the syruping machine, pump plunger, slide-valve, or other mechanism, the desired
intermittent motion may be obtained.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, and of
an Order of the Lord Chancellor, filed by the said William Braunley Dewhirst
and George Barker in the Great Seal Patent Office on the 13th November
1880.
WILLIAM BRAMLEY DEWHIRST and GEORGE BARKER, both of the City of
Manchester, in the County of Lancaster. "IMPROVED APPARATUS OR MACHINERY
FOR OBTAINING AN ADJUSTABLE INTERMITTENT MOTION SUITABLE FOR SYRUPING
MACHINES, FOR ACTUATING PUMP PLUNGERS, SLIDE VALVES, AND FOR OTHER
ANALOGOUS PURPOSES."
Our Invention consists in so constructing and arranging mechanism as to obtain
a rapid vertical or horizontal motion at any given point in the revolution of a crank
carried by a continuous straight shaft, without there being any motion at any other
point, the distance traversed being regulated at will from zero to the extent of the
radius or throw of the crank, and which motion is suitable for the purposes
indicated above.
In carrying out our Invention, we employ a crank pin of the desired throw or
radius, and mounted by preference on a disc carried by the revolving shaft. This
crank pin is arranged to work in a suitable box provided with a slot for the crank pin
fer ule to work in, and with an adjustable sliding jaw fixed in any desired position
by means of a set-screw, this movable jaw enabling the movement of the box to
be regulated to the greatest nicety, so as to stand still during any desired portion of
the revolution of the crank pin, and to move the box forward during the remaining
portion of the revolution, and thus by suitably connecting such box to the syruping
machine, pump plunger, slide valve, or other mechanism, the desired intermittent
motion may be obtained.
And in order that this our said Invention may be the more readily understood
and carried into practical effect, we have hereunto annexed a Drawing illustrative
of our Invention, and will now proceed to describe the same by reference to the
various Figures and letters of reference marked thereon.
Fig. 1 is a front view; Fig. 2, a back view; and Fig. 3, a side sectional view of
our improved apparatus, drawn about half size, and Fig. 4 is a full sized front
view of the same.
In all the views A is the crank pin, mounted by preference on a disc B, keyed or
otherwise secured upon and so as to revolve with the shaft C; D is a metallic box,
which encloses or partly encloses the disc B, and is designed to be moved to and fro
by the revolving action of the crank pin, or to stand still as required. A slot E
is formed through this box D to allow the shaft C to pass through, and a recess is
also provided inside such box for the crank pin A and its friction bowl or ferrule F
to work in
G is an adjustable sliding jaw, which can be projected more or less into the inside
of the recess before mentioned, and thus regulate themovement of the box, as herein-
after described, this jaw being fixed in any desired position by means of the set-
screw H. It will be apparent that the shaft C is capable of revolving without
imparting any movement at all to the box D, for instance, when the sliding jaw G
is fixed in the position indicated in Figs. 1, 2, and 3, whilst if such jaw be fixed in
the position illustrated in Fig. 4, the box is caused to be moved forward a distance
equal to the radius of the crank pin A every time the friction bowl F comes in
contact with the sliding jaw G at one end of the throw of the crank pin, and to be
pushed back an equal distance when the said friction bowl comes in contact with
the opposite end of the recess, and if fixed in any intermediate position, then a
proportionate movement is given to the said box.

page_text: In this manner, by suitably connecting the box D, say for instance, by means of
its rod I to a syruping machine, pump plunger, piston, slide valve, or other mechanism,
any desired intermittent motion may be obtained, the box standing still during
any desired portion of the revolution of the crank, and moving forward during the
remaining portion of the revolution.
Having thus particularly described and ascertained the nature of this our said
Invention, together with the best methods with which we are acquainted for carrying
the same into practical effect, we wish it to be distinctly understood that we do not
confine ourselves to the precise details, relative proportions, or dimensions of the
various parts of our improved apparatus hereinbefore described and illustrated on
the accompanying Drawing, as the same may be considerably varied without
departing from the Invention, but what we do claim is,-
The combination and arrangement of mechanism constituting an intermittent
motion, substantially as and for the purposes herein before described and illustrated
on the accompanying Drawing.
In witness whereof, I, the said William Bramley Dewhirst, for and on behalf
of the said George Barker and myself, have hereunto set my hand and seal,
this Fifth day of November, in the year of our Lord One thousand eight
hundred and eighty.
Wч..BRAMLEY DEWHIRST. (L.S.)