Year: 1888

page_text: Date of Application, 11th June 1888
Complete Specification Left, 6th Mar., 1889
Comolete Specification Accepted, 6th Apr., 1889
I, JAMES COULTER, of Bank Foot, Foundry Batley, in the County of York,
Machine Maker, do hereby declare the nature of this invention to be as follows:-
This invention has reference to prior Letters Patent granted to me bearing date
the 2nd day of July AD 1885, No. 8026, part of which invention consisted in
moving the crosshead of the machine at each end of the stroke by means of a
rod and lever, worm and wheel, or other like mechanism operated by the workman.
It is now my intention to dispense with such mechanism and move the crosshead
automatically during the time it is turning over at each end of the stroke, and this
I accomplish by means of suitable inclined planes fixed or cast onto a portion of the
framework of the machine, such inclined planes working against and in contact with
other inclined planes fixed or cast onto the crosshead, or other suitable part of the
machine so that when the stone has reached the end of its traverse, the crosshead is
made to turn over to present the other side of the tools to the surface of the stone,
which operation of turning over causes the inclined surfaces to move the crosshead
laterally, which brings the tools to a different portion of the stone, so as to take off
the ridges thereon made and left by the tools when the table was travelling in the
forward direction. When the travelling table with the stone thereon has completed
its return stroke, the crosshead is again turned over, and at the same time moved
back laterally into its original position, ready for the forward movement of the table,
thereby placing the whole surface of the stone under the cutting tools.
this ath day of Inne 1888
TASKER & CROSSLEY,
Halifax, Agents.

page_text: I, James CoultTER, of Bank Foot Foundry, Batley, in the County of York,
Machine Maker, 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
-
This invention has reference to prior Letters Patent granted to me bearing date
the 2nd day of July A D. 1885, No 8026, part of which invention consisted in
moving the crosshead of the machine laterally at each end of the stroke by means of
a rod and lever, worm and wheel, or other like mechanism. It is now my intention
to dispense with such mechanism and to give a lateral movement to the crosshead
automatically, during the time it is turning over at the end of each stroke, and this I
accomplish by means of suitable inclined planes fixed or cast onto the crosshead, or
other suitable part of the machine, so that when the stone has reached the end of its
traverse, and the crosshead is made to turn over to present the other side of the tools
to the surface of the stone; such operation of turning over causes the inclined
surfaces to move the crosshead laterally, which brings the tools to a different portion
of the stone, so as to take off the ridges thereon made and left by the tools when the
table was travelling in the forward direction. When the travelling table, with the
stone thereon, has completed its return stroke, the crosshead is again turned over and
at the same time moved back laterally into its original position ready for the forward
movement of the table, thereby placing the whole suiface of the stone under the
cutting tools
In order that my said invention may be better understood, I will now make reference to
the accompanying sheet of drawings, wherein Fig. 1 is elevation of such parts of a stone
dressing machine as are necessary to illustrate my improvements, Fig. 2 being elevation
of one end, and Fig. 3 cross section through the line ab of Fig 1. The cutting tools are
shewn at A, fixed in the crosshead B carried by brackets Cattached to the framework
of the machine D in the usual manner. In this class of machine the crosshead or
toolholder B is made to turn over in the ordinary way by the vertical shaft I and
bevel wheels J and K, so that the tools can operate upon the stone during the backward
and forward motion thereof. In order to impart lateral or endwise movement to the
crosshead, I utilize the turning over motion, and to do this I form a wedge or
inclined surface c on the face or side of the bracket C and form a corresponding
wedge or inclined on the inner side of the oscillating arm G; a wedge or inclined
surface is also shewn at e in contact with a corresponding incline on the end of the
crosshead, so that as the said crosshead is overturned the inclined planes are brought
into action, and impart a lateral or endwise movement to the crosshead each time it is
overturned, that is to say, the crosshead is moved on its journal H end wise backwards
and forwards alternately. Fig. 1 shows the crosshead as having moved endwise in
the direction of the arrow I, but the next time the crosshead is overturned it will be
made to move in the direction of the arrow J, the journal H of the crosshead being
sufficiently long to permit of such movement.

page_text: I employ the ordinary air cylinder E to check the fall of the crosshead when it is
turning over, and in order that the cylinder and piston rod F may adjust them-
selves to the varying positions of the crosshead, universal joints are made at parts
L and M.
By the employment of mechanism operated in the manner herein shewn and
described, the crosshead and cutting tools are automatically moved laterally
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 18 :-
In stone dressing machines, the employment of inclined planes, so placed and
arranged that as the crosshead is overturned it receives a lateral movement in the
manner substantially as described and shewn in the drawings.
TASKER & CROSSLEY,
Halifax, Agents