New or Improved Boring Appliance for Lathes.
Year: 1895

page_text: Date of Application, 27th July, 1895
Complete Specification Left, 27th Apr., 1896-Accepted, 6th June, 1896
New or Improved Boring Appliance for Lathes.
I EDWARD GARTON of 39 Josephine Avenue, Brixton, London, S.W., Student
do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved appliance for lathes for use with a boring
bar and slide rest.
A rotary mandril is held between centres said rotary mandril having a longi-
tudinal slot or gap cut therein and therethrough towards one end of said mandril
but so as to leave a short length of the metal of the mandril solid at that end.
The slot is of length to allow of the full traverse of the cutter holder in making
a boring or cutting.
The cutter holder is in form of a sleeve or hollow tube fitted at one end
thereof with tightening screws and piercings through which and through the slot
or gap of the mandril, aforesaid, the tool or bit, will be passed and be firmly held
by the aforesaid screws or other holding means as required. The rearward end of
the cutter holder sleeve is formed with cheeks or discs so as to constitute a two
flanged spool with intermediate gap to receive two arms of a fork ended traversing
arm or link-bar mounted (by a strap or otherwise) rigidly on the slide portion of
the slide rest. When the slide rest is operated the forked arm or link-bar thereon
will advance or retire the sleeve cutter holder and cutter which will have been
previously mounted in proper relative position to the work and the boring or
cutting will proceed.
In the end or ends of the fork of the slide rest arm is or are to be mounted an
antifriction roller or rollers which will bear against the flanges on the cutter-
holder-sleeve as the work proceeds.
Dated this 27th day of July 1895.
HUGHES, ELI & HUGHES,
76 Chancery Lane, W.C., Agents for Applicant.
New or Improved Boring Appliance for Lathes.
I EDWARD GARTON of 39 Josephine Avenue, Brixton, London S.W. Student
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 relates to an improved appliance for lathes for use with a boring
bar and slide rest.
In order that the following description may be well understood I have anned
hereto a sheet of drawings and will refer thereto by figures and letters.
Fig. 1, is a side view or elevational view of the appliance.

page_text: A rotary mandril a is held between centres b, said rotary mandril having a
longitudinal slot or gap c, cut therein and therethrough towards one end of
said mandril but so as to leave a short length a¹, of the metal of the mandril solid
at that end.
The slot c, is of length to allow of the full traverse of the cutter holder d, in
making a boring or cutting.
The cutter holder d, is in form of a sleeve or hollow tube fitted at one end
thereof with tightening screws d', and piercings through which and through the
slot or gap c, of the mandril aforesaid the tool or slot e will be passed and be
firmly held by the aforesaid screws d', or other holding means as required.
The rearward end of the cutter holder sleeve d is formed with cheeks or discs f,
so as to constitute a two flanged spool with intermediate gap to receive two arms g³,
of a fork ended traversing arm or link-bar g, mounted (by a strap g² or otherwise)
rigidly on the slide portion of the slide rest.
When the slide rest is operated the forked arm or link bar g, thereon will
advance or retire the sleeve cutter holder d, and cutter e, which will have been
previously mounted in proper relative position to the work and the boring or
cutting will proceed.
In the end or ends of the fork ', of the slide rest arm is or are to be mounted
an antifriction roller or rollers which will bear against the flanges f on the cutter-
holder sleeve d as the work proceeds.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be perforined, I declare that what I
claim is :-
The new or improved boring appliance for lathes constructed, combined and
operating as and for the purpose herein set forth.
Dated 27th April 1896.
HUGHES, ELI & HUGHES,
76, Chancery Lane, W.C.