Improvements in Apparatus for Cutting Off, Centering, and Surfacing or Squaring the Ends of Metallic Bars.
Year: 1894

page_text: Date of Application, 17th Dec., 1894-Accepted, 2nd Mar.,
1895
Improvements in Apparatus for Cutting Off, Centering, and Surfacing
or Squaring the Ends of Metallic Bars.
We, JOHN MILEY, of Cliff Street, JOHN GRACE, of Devonshire Street, and
JAMES SMITH, of Cliff Street, all of Keighley, in the County of York, Engineers,
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 for its object the cutting or surfacing of the ends of bars and
the cutting of bars into lengths by an apparatus constructed by a novel combination
of parts so arranged that, after surfacing the end of a bar or cutting a piece from
the end of same, the bar still secured may be centred true with the circumference
ready for the lathe.
In describing our invention in detail, reference is made to the accompanying
drawings in which
Fig. 1 represents a side elevation of such portions of a machine constructed in
accordance with our invention as are required to describe how the same is to be
performed, part of the bed frame is cut away by the irregular line.
Fig. 2 is a detail of a portion of the driving gear showing how two speeds can be
obtained.
Fig. 3 is a front end elevation with a portion removed for more clearly showing
the cutting tool and slide for carrying same, and
Fig. 4 is a back end elevation.
In all the figures similar letters indicate similar parts where they appear.
The bed frame of the apparatus is indicated by the letter A. which is extended
upwards and a circular path formed at B. for the reception of a circular plate C.
turned to fit and revolve in the said path, and is held therein by a cover plate D.
secured in any suitable manner to the walls of the path B.
Motion to the circular plate C. is transmitted from one of the pullies E. secured
on main shaft F. provided with one or more feather keys on which slide two spur
wheels G. and H. provided with a grooved clutch C₁ between same, with which
engages an arm operated by the lever D' by the action of which, the before
mentioned wheels are made respectively to gear with the coupled spur wheels G'
and H¹ supported by idle stud S. and teeth of wheel G also gearing with the spur
teeth formed around the circumference of the circular plate C. at C².
In the face of the circular plate C. a slide is formed for the reception of a tool
holder J. which is operated by screw K. on one end of which is secured a star
wheel L. of the ordinary description.
In front of the apparatus is secured a pair of concentric vice M. of the ordinary
construction, regulated as to distance from the circular plate C. by screw and
wheel N. the jaws of vice being operated by a left and right hand threaded
screw at O.
The bar to be ended or cut into lengths is secured by the before concentric vice,
and on putting the circular plate C. in motion, with the tool T. in contact with the
bar P. the tool T rotates around the stationary bar cutting same, the feed to the
tool T. being obtained by the revolving star wheel L. coming in contact with some
fixture, thus turning the screw K. a certain distance and moving the tool holder J.
and tool T. towards the centre of the bar P.
The tool Tis secured in the holder J. by screws Q. Q. and the underside or

page_text: heel of the tool T. is supported by a metallic projection F. of such width as to
allow clearance in the groove cut by the tool when dividing a bar.
When the apparatus is used for surfacing the end of a bar, the tool T. is applied
in the manner as before described, and after the end of the bar is cut straight, it
may be centred true with the circumference by applying a centring drill in the
manner as hereinafter described, the centre of the concentric vice corresponding
to the centring drill.
At the rear part of the apparatus is mounted on a bed U. a saddle and head
stock V. supporting a rotating spindle W. driven by a belt passing over pullies 1
and 2, or in any other convenient manner.
The saddle of head stock V. is brought into contact with a stop W' the drill D³
is fitted into end of rotating spindle at W' and is traversed by the operation of
lever Y. secured to a spindle to which the pinion Y' is attached, the said pinion
gearing with a rack formed on the sleeve Z. in which the rotating spindle is
mounted.
On pressing the rotating drill against the end of bar by the operation of lever Y.
a centre hole is cut in the end, true with the circumference of the bar.
When applying our apparatus for cutting bars to a given length, the saddle and
head stock V. are moved to one side, away from the before mentioned stop, and the
arm 3 brought into position for the end of bar extending through openings in the
circular path B. and rotating plate C. to butt against, then the bar is secured by
the vice and the machine put in motion.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is,
1. A circular plate C. rotating in a path combined with a traversing cutting
tool T. mounted in a manner for operating around or at the end of a stationary
shaft or bar substantially in the manner as herein before described.
2. A rotating circular plate C. mounted and fitted with a rotating and traversing
cutting tool T. Bupported at the heel, arranged and operated substantially in the
manner as shown and described.
3. A rotating circular plate C. provided with a traversing cutting tool T.
combined with a concentric vice and a rotating centring drill D' all arranged and
operated substantially in the manner as shown and described.
4. The general arrangement and combination of the parts constituting the
apparatus substantially in the manner and for the purpose as shown and herein-
before described.
Dated this 14th day of December 1894.
JOHN WAUGH,
Agent.