Improvements in Apparatus for Grinding Files, Blades, and other Tools or Artioles.
Year: 1893

page_text: Date of Application, 31st Jan., 1893
Complete Specification Left, 30th Oct., 1893—Accepted, 23rd Dec, 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Grinding Files, Blades, and other
Tools or Artioles.
We, THOMAS CROSLEY, Grinder, and FREDERICK EVANS, Moulder, both of
The Old Foundry, Warrington, in the County of Lancaster, do hereby declare the
nature of this invention to be as follows
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This invention is designed to provide apparatus whereby the grinding of tools
such as files or other flat articles may be effected upon the side or face of the
stone instead of upon the periphery as at present and without the consequent danger
to the operative which is now incurred
We provide a carriage or rest in which the article 18 held and a disc oi holder
for the stone to which the stone 18 firmly wedged or otherwise attached.
The disc to which the grinding stone is affixed is mounted on a horizontal spindle
in suitable fixed bearings or supports and is rotated by a strap passing over pulleys
in the ordinary way and the stone is affixed thereto preferably by being passed
under or between lugs or clips projecting from the face of the disc under which
keys or cotters are driven. The stone projects for some distance from the disc
and the outer side or face is free to be used. The spindle and disc are sufficiently
strong to bear the weight and pressure on the stone and disc.
The carriage or rest is mounted upon an angula bed or support which supports
it both vertically and horizontally and is provided with unuers or friction bowls
at the underside and at the back where it bears against its bed or support
At the top of the carriage is placed a swivelling or pivoted block which can be
set or adjusted with its face either vertical or any desired inclination thereto, and
is provided with a stud hold by nuts or other equivalent device whereby it is
securely held in the position in which it is set.
Beneath the swivelling block is placed a sliding rest or plate which can be
moved horizontally and is fixed and held in position by bolt and wing out.
The swivelling block forms a rest or support for the file or other article by
which it is held or pressed against the side or face of the rotating stone while it
lies on the horizontally sliding plate which can be moved out and in according to
the thickness of the article under operation.
Any desired amount of bevel or tape may be given to the article by inclining
the swivelling block against which it rests.
For blades and other articles which require a bevel at the cutting edge instead
of or in addition to the flat swivelling block a pair of clamps or jaws may be
provided on the rest which will grip and hold the article whilst the berel on the
edge is being ground.
The bed or support on which the rest slides or moves is mounted on transverse
slides and is attached by chain and suitablo levers with a treadle by pressing on
which the rest is moved with the desired amount of pressure towards the side of
the rotating stone. The movement of the bed or support 18 such that it can he
brought forward in a line parallel with the axis of the stone or at an inclination
thereto.
The face of the stone may be cut with any'suitable furrows or grooves to carry
round the water which is supplied from a small jet
The carriage or rest is moved to and fro across the side of the stone by a handle

page_text: or lever and the periphery of the stone may be encased or covered in to prevent
accident to the workmen in the event of fincture or bursting of the stone
Dated this 30th day of January 1893.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE
SPECIFICATION.
Improvements in Apparatus for Grinding Files, Blades, and other
Tools or Articles.
We, THOMAS CROSLEY, Gunder, and FREderick Evans, Moulder, both of
The Old Foundry, Warrington, in the County of Lancaster, 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 to provide apparatus whereby the grinding of tools
Buch as files or other flat articles may be effected upon the side or face of the stone
instead of upon the periphery as at present and without the consequent danger to
the operative which is now incurred
It consists essentially in mounting the grinding stone or disc upon a vertical
disc oi holder to which it is clamped instead of upon a houzontal shaft so as to
present the face instead of the periphery of the stone for gunding upon and
in the combination therewith of a carriage or rest for the article or tool to be
ground by which the article is traversed in fiout of or held against the face of the
stone.
T
Fig. 5, longitudinal sectional clevation.
Fig. 6, transverse sectional elevation on line a―y, Fig. 1.
Fig. 7, end elevation similar to Fig. 3. with horse o seat for the grinder.
Fig. 8, enlarged elevation and section of special rest for three sided and half
round files
The grinding disc A of sandstone emely or other suitable material is carried or
supported by a disc or holder B, to which it is firmly attached or clamped and
the tool or article to be ground is placed upon a carnage or rest C, upon which it
can be held against or moved to and fro past the side of face of the gunding disc
or stone A.
The disc or holder B, to which the grinding stone A is affixed, is mounted on a
horizontal spindle D, in suitable fixed bearings or supports and is rotated by a
strap passing over a pulley E, in the ordinary way The grinding stone A 18
affixed to the holder B, preferably by being passed under or between a flange bor
lugs or clips projecting from the face of the disc under which keys or cotters b¹
are driven, set screws & also being used to the grinding stone. The grinding
stone A projects for some distance from the disc and the outer side or face 18 free
to be used. The spindle and disc are sufficiently strong to bear the weight and
pressure on the stono and disc.
The carnage or rest C is mounted upon an angular bed or support F which
supports it both vertically and horizontally and is provided with runners or friction
bowls G, at the undersido and at the back where it bears against its bed or
support.
At the top of the carriage C is placed a swivelling or pivoted block H, which
can be set or adjusted with its face either vertical or at any desired inclination
thereto.
This block is held in the position at which it is set by the stud 1 pivoted thereto

page_text: by the pin h and passing through the bracket J, a nut i being placed on either side
of the bracket J.
Beneath the swivelling pivoted block His placed a horizontally sliding rest_on
plate K which can be moved to or from the face of the grinding stone A and is
secured and held in position by a bolt and wing nut k.
The swivelling block H forms a rest or support for the file or other article which
by it is held or pressed against the side or face of the rotating stone A while it lies
on the horizontally sliding plate K which can be moved out and in according to the
thickness of the article under operation.
Any desired amount of bevel or taper may be given to the article by
inclining the swivelling block H against which it rests by means of the stud 1
and nuts 1.
For blades and other articles which requiro a bevel at the cutting edge instead
of or in addition to the flat swivelling block a pair of clamps or jaws may bo
provided on the rest which will grip and hold the article whilst the bevel on the
edge is being ground.
The bed or support F on which the rest C slides or moves is mounted on
tiansverse slides and is attached by a chain L, and suitable levers with a
treadlo M by pressing on which the rest is moved with the desired amount of
pressure against the face or side of the rotating stone A. The movement of the
bed or support is such that it can be brought forward in a line parallel with the
axis of the stone or at an inclination thereto. The other end of the rest is held in
position by the adjusting rod N.
The face of the grinding stone A may be cut with any suitable furrows or
grooves to carry round the water which is supplied from a small jet.
The carriage or rest C is moved to and fro across the side of the stone by
a handle or lever O and the periphery of the stone may be encased or covered
in to provent accident to the workmen in the event of fracture or bursting of the
stone.
For grinding thice square or half round files or other articles of irregular shape
a rest such as shown in Fig. 8, may be employed.
On the other end of the horizontal spindle D which carries the holder for the
grinding stone A we inny affix another grinding stone A' mounted in the usual
way with a pivoted lever or slide P. for holding articles against its periphery and a
seat or horse of ordinary construction (Fig. 7) for the grindor to sit upon.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is.
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1. Apparatus for grinding files blades and other tools or articles, constructed
with a holder to grip the grinding stone round the periphery leaving one side or
face free and a reciprocating rest by which the tool or article is held and pressed
against the side or face of the grinding stone substantially as described.
2. In apparatus for grinding files blades or other articles the combination with
the grinding stone of the holder provided with a flango or lugs by which the stone
or disc is gripped round the periphery substantially as described
3. In apparatus for grinding files, blades and other tools or articles the combina-
tion with a grinding stone supported in a holder with one side or face free of the
carriage or rest C the angular bed F upon which it is mounted and the pivoted
block II by which the article is brought to the face of the grinding stone at the
proper angle substantially as described.
T
WATCH HIS MUWAY UL ULUDDE
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.