IMPROVEMENTS IN MACHINERY OR APPARATUS FOR BORING, PLANING, FACING, AND SLOTTING METALS AND OTHER MATERIALS, AND BORING OUT THE BRASSES OR BEARINGS OF SHAFTS.
Year: 1878

page_text: LETTERS PATENT to John George Cameron, of the Town and County of
Kingston-upon Hull, Engineer, for the Invention of "IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR BORING, PLANING, FACING, AND SLOTTING
METALS AND OTHER MATERIALS, AND BORING OUT THE BRASSES OR BEARINGS
OF SHAFTS.
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Sealed the 13th December 1878, and dated the 12th September 1878.
PROVISIONAL SPECIFICATION left by the said John George Cameron at the
Office of the Commissioners of Patents on the 12th September 1878.
"
JOHN GEORGE CAMERON, of the Town and County of Kingston-upon-Hull,
Engineer. IMPROVEMENTS IN MACHINERY OR APPARATUS FOR BORING, PLANING,
FACING, AND SLOTTING METALS AND OTHER MATERIALS, AND BORING OUT THE
BRASSES OR BEARINGS OF SHAFTS."
My Invention relates to machinery or apparatus adapted more especially for use
on board ship, by means of which the operations of boring, planing, facing, and
slotting to meet the requirements of the varied cases constantly occurring, may be
carried out with facility and despatch.
The Invention also enables two or more of the operations to be performed con-
jointly and simultaneously by the use of one and the same machine.
In carrying out my Invention, I employ a circular table, to which rotatory.
motion is imparted by an endless screw or worm, and worm wheel or equivalent
gearing. The boring bar or tool holder is carried in an aperture formed in this
table, into which it is introduced either from above or from below, the bar being
made of a square form on its lower end, or otherwise arranged so as to hold it
stationary whilst the table revolves.
Above the table is fitted an adjustable cutter or boring.block for the facility of
boring out worn brasses, the bearing being carried on the revolving table, so that
the operations of boring holes in metal or other material with the lower tool, and

page_text: of boring out bearings for the renewal or repair of their brasses with the upper tool
may be performed simultaneously.
One of the most important applications of the improved machine is its use for
the stripping and boring of heavy brasses, the operations being performed with a
degree of accuracy unattainable by the ordinary method of chiselling and filing.
The machine is thus chiefly available for use in an engine room for effecting
repairs, which ordinarily require the resources of a factory.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John George Cameron in the Great Seal Patent Office on the 5th
March 1879.
JOHN GEORGE CAMERON, of the Town and County of Kingston-upon-Hull,
Engineer. "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR BORING, PLANING,
FACING, AND SLOTTING METALS AND OTHER MATERIALS, AND BORING OUT. THE
BRASSES OR BEARINGS OF SHAFTS."
My said Invention relates to machinery or apparatus adapted more especially for
use on board ship, by means of which the operations of boring, planing, facing, and
slotting, to meet the requirements of the varied cases constantly occurring, may be
carried out with facility and despatch.
The apparatus may also be so constructed as to enable two or more of the opera-
tions before mentioned to be performed conjointly and simultaneously by the use of
one and the saine machine.
According to one mode of carrying out my said Invention, I employ a circular
table, to which rotatory motion is imparted by an endless screw or worn, and worm
wheel or equivalent gearing. In an aperture formed in this table is carried a boring
bar or tool holder, which is introduced into the aperture either from above or below,
and is made of a square form on its lower end, or otherwise so arranged as to admit
of its being held stationary whilst the table revolves. The tool fitted in this holder
is intended for boring holes in metal or other material.
In addition to this tool, there is provided above the table an adjustable cutter or
boring block, for the facility of boring out bearings for the renewal or repair of their
brasses.
The article to be operated upon is carried upon the table, and the latter being
set in motion, the article is acted upon by the upper tool, or by the lower tool, or
by both tools simultaneously, according to the requirements of the work to be
performed.
The construction of the machine herein-before described is applicable for use in the
majority of cases constantly occurring. Where however it is intended to apply the
machine to special purposes, it will be requisite, whilst retaining the same general
principles, to modify its construction, in order to adapt it to the exigencies of
particular cases.

page_text: For example, apparatus constructed in accordance with my said Invention may
be used for rendering true crank pins or cross heads, which have become irregularly
worn. In this case the apparatus is so arranged as to bolt on to the crank web or
connecting rod, and as the work is necessarily stationary, the tools are caused to
revolve by means of an endless screw or worm, and worm wheel, or equivalent
gearing, as in the case of the table in the modification of apparatus first herein-
before described.
The tools are also made capable of adjustment as the work proceeds, as in the
case of the upper tool in the said previous modification.
And in order that my said Invention may be fully understood I shall now pro-
ceed more particularly to describe the same, and for that purpose shall refer to the
several Figures on the annexed Sheets of Drawings, the same letters of reference
indicating corresponding parts in all the Figures.
Figure 1 (Sheet 1) of the accompanying Drawings represents a vertical section of
an apparatus intended for boring out bearings for the renewal or repair of their
brasses, and for boring metal or other material constructed in accordance with my
said Invention ; and Figure 2 is a plan of the same, corresponding to Figure 1.
Figure 3 (Sheet 2) represents a vertical section, constructed according to another
modification of my said Invention, and intended to be used for rendering true
crank pins or cross heads; and Figure 4 is a front elevation, corresponding to
Figure 3.
In Figures 3 and 4 the apparatus is represented as in the act of operating upon a
crank pin or cross head.
Referring to Figures 1 and 2 (Sbeet 1), A is a circular table, provided with a
vertical pivot or spindle a, which is fitted so as to be capable of turning in a bearing
at b, in a frame or bracket B. Rotary motion is imparted to this table by means of
an endless screw or worm C on a shaft c, which is supported in bearings d, d, in the
frame or bracket B, and is provided with a handle e for the facility of turning it,
the said endless screw or worm engaging with the teeth of a worm wheel D formed
on the table A.
The pivot or spindle a is made hollow for the reception of a boring bar or holder
for a boring bit (not shewn in any Drawings), which is intended to be held stationary
by being made of a square form, and fitted into a recess of a corresponding form
on a stationary body or otherwise, as will be well understood, so that it shall be
prevented from rotating whilst the pivot or spindle a with the table revolves
around it.
The frame or bracket B is provided with standards f, f, which carry above
guides E for a cutter block F, fitted with a cutter g, the said block having a com-
pound traversing motion, the nature and object of which will be apparent without
further explanation.
The material or work to be operated upon is secured on the top of the revolving
table A, and the apparatus being set in motion, the required operation is performed
with facility and despatch, holes are bored in metal or other material with the lower
tool or brasses are bored out, or similar work is carried out with the upper tool, or
both tools are used simultaneously, according to the requirements of the operation.
When the apparatus is intended to be used for rendering true crank pins or cross
heads which have become irregularly worn, it is constructed in the manner shewn in
Figures 3 and 4 (Sheet 2) of my Drawings.
In this case, the holders marked F¹ for the cutting tools g', g', are secured, the one
opposite the other, to an annular ring or table A, to which rotary motion is imparted
by means of an endless screw or worm C and worm wheel D, as in the arrangement
previously described, the ring being fitted so as to be capable of turning freely in a
recess at b, provided in a frame B of suitable form for carrying the operating parts.
This frame is bolted on to crank web G in such a position that the ring A surrounds
the crank pin or cross head H, the ring being made in two parts bolted together for
the facility of placing it in position.
:

page_text: It will be obvious that upon rotatory motion being imparted to the ring A by
the act of operating the endless screw or worm C, the tools g', g¹, are caused to turn
round the crank pin or cross head H, and the tools being set up by ordinary means
and traversed by the aid of the screws h, the crank pin or cross head under operation
will be rendered perfectly true and smooth.
When my said Invention is applied to the stripping and boring of heavy brasses,
as in the case of the apparatus herein-before described with reference to Figures I
and 2 of the Drawings, the operations are performed with a degree of accuracy
unattainable by the ordinary method of chiselling and filing.
In the case also of the application of the Invention herein-before described with
reference to Figures 3 and 4 of my Drawings, equal facility and accuracy are
obtained.
.
Machines constructed according to my said Invention are. therefore available for
use in an engine room for effecting repairs, which ordinarily require the resources of
a factory.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider to be novel and original,
and therefore claim as the Invention secured to me by the herein-before in' part
recited Letters Patent is, the employment of machinery or apparatus consisting of a
rotary table, or its equivalent, and suitable tools, when the same are arranged in
combination, and actuated substantially in the manner and for the purposes herein-
before described.
In witness whereof, I, the said John George Cameron, have to this my Specifi-
cation set my hand and seal, the Fourteenth day of February, One thousand
eight hundred and seventy-nine.
JOHN GEORGE CAMERON. (L.S.)