Improvements in Machinery or Apparatus for Grinding, Cutting, Glazing, or Polishing.
Year: 1896

page_text: Improvements in Machinery or Apparatus for Grinding, Cutting,
Glazing, or Polishing.
I JOHN URMSON Junior, of 451 Ashton Road, Oldham, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
This apparatus is designed principally for grinding glazing and polishing all
shapes and sizes of light and heavy castings, but it is applicable also for other
similar purposes and for cutting purposes, where a rotary cutter can be employed.
Upon a convenient centre shaft suitably driven I mount loosely a pair of arms or
levers forming a swinging frame which carries a second shaft capable of radiating
around the centre shaft from which it is or may be driven by a belt and pulleys.
I form keyways on the radiating shaft to receive a belt pulley which drives by a
suitable belt a pulley in a loose tool box hereafter described. Thus the pulley
which is mounted on the keyways can slide from one end of the radiating shaft to
the other being driven thereby by means of keys dovetailed and secured in the
pulley.
The pulley in the tool box is driven by the belt above named and thus the tool
box is suspended on its driving belt and is manipulated quite easily by means of
suitable handles fixed to the sides of the box.
The frame of the box encloses besides the belt pulley which revolves on a suit-
able axis a pair of friction pulleys one on each side of the raid belt pulley and
fixed to or forming part of or otherwise driven by the latter, the friction pulleys
being larger than the belt pulley.
These friction pulleys may be of any suitable form and each drives a smaller
friction pulley or wheel, on a suitable shaft upon which is mounted between the
iwo friction pulleys or wheels the rotary tool, an emery roller buff, cutter or other.
tool as the case may be. The tool shaft is carried in suitable adjustable blocks or
bearings.
The overhead radiating motion may be balanced by an adjustable weight bar or
its equivalent which when fast holds the radiating lovers in position.
The tool box above described may be combined with other balanced over head
driving gear if desired, but I prefer to employ the radiating motion as above
described.
By these improvements. I produce apparatus cheaply constructed and capable of
rutting grinding polishing or surfacing almost any possible shape of casting or
article.

page_text: COMPLETE SPECIFICATION..
Improvements in Machinery or Apparatus for Grinding, Outting.
Glazing, or Polishing.
I JOHN UнMSON, Junior, of 451 Ashton Road, Oldham, in the County of
Lancaster, 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:-
This invention is designed principally for grinding, cutting, glazing, and
polishing all shapes and sizes of light and heavy castings, but it is applicable also
for other similar purposes, and for cutting purposes where a rotary cutter can be
employed.
The nature of my said invention and the manner in which the same is to he
performed or carried into practical effect will be readily unde:stood on reference
te the sheet of drawings hereunto annexed and the following explanation thereof.
Fig. 1 on the drawing is a side elevation of the apparatus complete. Fig. 2 is
an onlarged elevation, and Fig. 3 a vertical section of the tool box or holder
detached. Fig. 4 is an elevation of a modification thereof hereinafter more
particularly referred to.
Upon a convenient centre shaft a (Fig. 1) suitably driven I mount loosely a pair
of arms or levors forming a swinging frame which carries a second shaft c capable
of radiating around the centre shaft a from which it is, or may be, driven by a
belt and pulleys e. I form keyways on the radiating shaft c or I otherwise form
the said shaft to receive a belt pulley f, which drives by a suitable belt or ropog
a pulley in the loose tool box or helder i hereafter described. Thus the belt
pulley which is mounted on the key ways or equivalent formation of the shaft c
can slide from one end to the other of the same, being at the same time driven
thereby by means of keys dovetailed and secured in the pulley.
The pulley in the tool box or holder (Figs. 2 and 3) is driven by the belt g
above named, and thus the tool box i is suspended on its driving belt 9 and is
manipulated quite easily at any angle required by means of two suitable handles k
fixed to the side of the box i.
The frame of the box i encloses beside the belt pulley h (which revolves on a
suitable axis) a pair of friction pulleys in, one on each side of the said belt pulley,
and fixed to, or forming part of, or being otherwise driven by the latter, the
friction pulleys m being larger than the belt pulley.
These friction pulleys may be of any suitable form and each drives a smaller
friction pulloy or wheel n on a suitable shaft o upon which is also mounted between
the two friction pulleys or wheels n an emery roller, buff, cutter or other tool pas
the case may be. The edge of the tool may be flat, rounded or otherwise formed
as may be desired.
The tool shaft is carried in suitable blocks or bearings which may be of the
form shown at Figs. 2 and 3, or may be made as shown at Fig. 4, 80 as to be more
readily detachable for convenience of changing the cutter or tool.
The overhead radiating motion (Fig. 1) may be balanced by an adjustable
weight bar r or its equivalent which when made fast will hold the swinging
ams or levers & in position.
The tool box i above described may be combined with other balanced overhead
driving gear if desired but I prefer to employ the radiating motion as above
described.
By these improvements I produce an apparatus cheaply constructed and capable
f cutting, grinding, polishing or surfacing almost any possible shape of casting
or article, at any angle desired.

page_text: 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 is:-
First: The construction of movable tool box or carrier supported by a hanging
driving belt which also drives the revolving tool or cutter contained in the said box
substantially as herein before described and illustrated by the drawings annexed,
and
Secondly, I claim the goneral construction and arrangement of the whole
apparatus and its driving gear constituting an improved machine for grinding,
cutting glazing or polishing metal castings and for other similar purposes,
substantially as herein before described and illustrated.
1007
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.