IMPROVEMENTS IN FLANGE FACING AND OVAL HOLE CUTTING MACHINES."
Year: 1880

page_text: LETTERS PATENT to Dennis Embleton and Peter Alfred Porter, both of Leeds,
in the County of York, for an Invention of "IMPROVEMENTS IN FLANGE
FACING AND OVAL HOLE CUTTING MACHINES."
PROVISIONAL SPECIFICATION left by the said Dennis Embleton and Peter
Alfred Porter at the Office of the Commissioners of Patents on the 26th May
1880.
DENNIS EMBLETON and PETER ALFRED PORTER, both of Leeds, in the County
of York. "IMPROVEMENTS IN FLANGE FACING AND OVAL HOLE CUTTING
MACHINES."
The object of this Invention is to arrange machinery or apparatus to render
flange facing and oval hole cutting so simple that skilled labour may be dispensed
with, at the same time work done with accuracy.
According to our Invention we provide framework which may be constructed so
that it may be bolted to a wall, pillar, or other convenient standard or upright.
On this is fitted, so as to slide freely, a saddle carrying the spindle; we arrange
apparatus for driving the spindle so as to produce any required variation in the
speed thereof, such variations being produced by worm and worm wheel or bevel
wheel appliances, or other suitable known arrangements. The required reciprocating
motion is imparted to the saddle carrying the spindle by a rotating can acting
between two jaws or projections attached to the saddle. The cam is mounted on a
face plate, and is made adjustable thereon for the purpose of increasing or reducing
the traverse of the saddle to cut oval holes of various lengths. Feed motion for the
vertical movement of the spindle may be of ordinary construction.

page_text: Fig. 1 is a part front elevation and section; Fig. 2, a side elevation; Figs. 3, 4,
and 5 are respectively a front elevation, side elevation, and plan of tool box for
oval hole cutting; Fig. 6, a plan shewing a detail of part of machine; Fig. 7, a plan
of cross head for flange facing.
a is the framework, which we have shewn constructed so that it may be bolted
to the beams b, or to a wall, pillar, or other convenient standard or upright. On
this framework a the saddle c is fitted, as shewn, so as to slide freely; on this is
mounted the spindle d in the bearings e and f, which are of ordinary construction.
In order to produce the required variation of the speed which is necessary for the
spindle d we provide the gearing g for quick speeds, and the gearing h for slow
speeds, regulated through the cone pulloy i.
For the production of oval holes it is necessary to impart not only a rotary
motion to the spindle, but also a lateral reciprocating motion, which is effected by
means of the adjustable cam j rotating with the spindle d between the jaws ko,
such jaws being bolted or otherwise fastened to the framework a.
The cam j
is rendered adjustable on a disc or plate ?, being fitted thereon so as to slide in the
grooves m on its face, and after being adjusted it is held in position by the bolts n.
The tool employed for oval hole cutting shewn at Figs. 3, 4, and 5, and consists
of the tool holder or box o, in which is fitted the adjustable arm or bar p carrying
the cutting tool q. This tool box o, when applied, is secured to the flange r at the
end of the spindle d by screws, bolts, or other equivalent means. By the arrangement
of the tool and parts connected therewith, in combination with the rotary
reciprocating motion of the spindle d, oval holes of any desired proportions may be
cut with the greatest accuracy.
For flange facing we employ the herein before described machine, but attach a

page_text: crossbeads to the flange at the end of spindle d which carries the tool boxes t
and u; these are fitted on the slides vand adjusted thercon by the screws w. These
tool boxes t and u may be of ordinary construction. To this crosshead s not only
a rotary but also reciprocating movement may be imparted in the same manner as
that described for the oval hole cutting tool.
In our Drawing we have shewn an ordinary simple rectangular table, but to
this machine may be applied a circular table, to which may be imparted a rotary
motion by ordinary means.
Feed motion for the vertical movement of the spindle may be of ordinary
construction.
Having now described the nature of the said Invention, and described by the
aid of Drawings how the same may be carried into practice, we would have it
understood that we do not limit ourselves to the precise details or configuration of
the parts we have described and shewn, as the same may be varied or modified
without departing from the nature of our said Invention, but what we claim and
desire to be secured to us by Letters Patent is,―
The arrangement, construction, and application of adjustable cam j and parts
connected therewith, in combination with the various parts forming the machine
or apparatus for flange facing and oval hole cutting, substantially as herein set
forth.
In witness whereof, we, the said Dennis Embleton and Peter Alfred Porter,
have hereunto set our hands and seals, this Twenty fourth day of November,
in the year of our Lord One thousand eight hundred and eighty.