Year: 1885

page_text: I, ALFRED AUSTIN RICKABY, of Bloomfield Engine Works, Sunderland in the
County of Durham Engineer, do hereby declare the nature of this invention to be
as follows:-
:-
My invention relates to certain fittings or appliances by which the tool on the
return stroke is removed out of contact with the surface of the article being slotted
or planed as the feed is acting for the next cut, whereby in existing machines its
cutting edge is destroyed and frequent grinding and setting are required.
As applied to slotting machines I fix the tool holder in the main sliding ram so
that it is free to move to a very small extent to and from the face on a bolt or pin
at a suitable point (which will preferably be near to lower end) this movement
taking place at the end of the cut by the action of a spring or wedge caused to
operate by the release of stops which during the working stroke keep the holder
close up to face of the sliding ram. These stops are acted upon by coming into
contact with tappets fixed with set bolts on main standard and adjustable to suit
the required stroke.
Thus while on the working stroke the holder is fixed by the stops firmly against
the sliding ram to take the cut given by the feed gear, on the return stroke the
stops, being released by contact with one of the tappets, the action of the spring
or wedge forces the holder forward from the face of sliding ram upon the bolt or
pin thus moving the tool out of contact with the face of the work which would
otherwise be forced against it by the action of the feed and the cutting edge destroyed
or injured.
In vertical or other planing machines the operation of my invention is similar,
the details of application being modified to suit each form of machine the object in
all being to prevent wearing and blunting of the tool by grinding against the face
of the work when making the return stroke.

page_text: I, ALFRED AUSTIN RICKABY of Bloomfield Engine Works Sunderland in the
County of Durham 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 certain fittings or appliances by which the tool on the
return stroke is removed out of contact with the surface of the article being slotted
as the feed is acting, for the next cut whereby, in existing machines, its cutting
edge is destroyed and frequent grinding and setting are required.
I fix the tool holder in main sliding ram so that it is free to move to a very
small extent to and from the face on a bolt or pin at a suitable point (which will 1
preferably be near to lower end) this movement taking place at the end of the cut
by the action of a spring or wedge caused to operate by the release of stops which.
during the working stroke keep the holder close up to face of the sliding ram.
These stops are acted upon by coming into contact with tappets fixed with set bolts
on main standard and adjustable to suit the required stroke.
Thus, while on the working stroke the holder is fixed by the stops firmly against
the sliding ram to take the cut given by the feed gear, on the return stroke-the
stops being released by contact with one set of the tappets-the action of the
spring or wedge forces the holder forward from the face of sliding ram upon
the bolt or pin, thus moving the tool out of contact with the face of the work
which would otherwise be forced against it by the action of the feed and the
cutting edge destroyed or injured.
]

page_text: top of the tool holder which is forced outward from the ram by the spring G. upon
the bolt A and the tool makes the return stroke in the position shewn by figure 3.
When the return stroke is nearly completed the crosshead F. comes into contact
with the upper pair of tappets and is forced down over the wedge shaped top of
the tool holder forcing it back against the ram, into the position shewn by figure 4,
ready for the fresh cut the feed having advanced the work on the table the
required extent during the return stroke of the tool.
The invention is applicable to any existing slotting machine by fitting the tool
holder to work upon a bolt in the sliding ram the only additional parts being the
brackets B carrying tappet bars C with tappets D; and the wedge shaped cross-
head F carried on the ram with spring G. to set out the tool-holder when released
by the crosshead.
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 application to slotting machines, when applicable or required, of automatic
gear by which the tool is removed out of contact with the work when making the
return stroke constructed and operating substantially as described and illustrated.
Dated the time day or sopro 10.
Witness:
T. J. DANSON, F. Inst. P.A.,
2, St. Nicholas Buildings,
Newcastle-upon-Tyne.
ALFRED A. RICKABY.