Improvements in Apparatus for Cutting Key Seats in the Bosses of Screws of Steam Vessels, Wheels, Pulleys, and the like.
Year: 1892

page_text: Date of Application, 15th June, 1892
Complete Specification Left, 15th Mar., 1893-Accepted, 29th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Cutting Key Seats in the Bosses of
Screws of Steam Vessels, Wheels, Pulleys, and the like.
I JAMES BARBOUR, of Falls Foundry, Belfast, Ireland, Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention is a further developement or improvement of the "Device for
cutting key-seats in the bosses of screws of steam vessels, wheels, pulleys, and the
like," for which Letters Patent No. 17882 of the year 1890 were granted to the
present applicant.
This invention relates to improvements in apparatus for purpose aforesaid, and is
specially applicable where the holes in which the key seats, or beds are to be cut,
are large enough to admit of the milling tools, or rotary cutters being driven by
means of gearing.
The apparatus consists of one, or more milling tools, or rotary cutters carried
on the end of a sliding ram, or bar; this sliding ram, or bar being made to move
endways in bearings attached to the cross slide of a lathe bed.
The milling tool, or rotary cutter, or cutters are driven by means of a shaft
running paralell to the sliding ram, or bar, the end of the shaft next to the milling
tools, or rotary cutter, or cutters having bevel, or other wheels gearing into bevel
or other wheels fixed to the spindle, or socket to which the milling tools, or rotary
cutters are attached. On the opposite or outer end of this shaft which is paralell
to the sliding ram, or bar, I fix bevel, or other wheels which receive their motion
from a belt pulley, or by the intervention of gearing.
Dated this 14th day of June 1892.
WALTER BRIERLEY,
Penny Bank Chambers, Halifax, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Cutting Key Seats in the Bosses of
Screws of Steam Vessels, Wheels, Pulleys, and the like.
I JAMES BARBOUR of Falls Foundry Belfast Ireland 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 a further developement or improvement of the "Device for
cutting key seats in the bosses of screws of steam vessels wheels pulleys and the
like "for which Letters Patent No. 17882 of the year 1890 were granted to the
present applicant.
This invention relates to improvements in apparatus for purpose aforesaid and is
specially applicable where the holes in which the key seats or beds are to be cut
are large enough to admit of the milling tools or rotary cutters being driven by
means of gearing.
The apparatus consists of one or more milling tools or rotary cutters carried on
the end of a sliding ram or bar, this sliding ram or bar being made to move
endways in bearings attached to the cross slide of a lathe bed.
The milling tool, or rotary cutter or cutters are driven by means of a shaft
running parallel to the sliding ram or bar the end of the shaft next to the milling
tools or rotary cutter or cutters having bevel or other wheels gearing into bevel
FD 031

page_text: or other wheels fixed in the spindle or socket to which the milling tools or rotary
cutters are attached. On the opposite or outer end of this shaft (which is parallel
to the sliding ram or bar) I fix bevel or other wheels which receive their motion
from a belt pulley or by the intervention of gearing.
Such being the nature and object of the said invention the following is a
complete description of the same reference being had to the accompanying drawings
on which-
Fig. 1 is a side elevation of the apparatus and sectional elevation of a boss and
eye of a wheel.
Fig. 2 is a plan view of Fig. 1 shewing the rotary cutter cutting a key bed.
Fig. 3 is an end view in elevation of the driving gear drawn detached..
Fig. 4 is a cross section on line A B of Fig. 2 drawn to a larger scale.
Similar letters of reference designate corresponding parts in all the figures.
The device consists of one or two milling tools or rotary cutters (1) driven by
means of a shaft and bevel or other gear carried upon or within the sliding ram or
bar (2) which is capable of being moved endways in bearings (3) attached to the
cross slide of the lathe, motion being communicated to the apparatus by a
pulley (4) at the opposite end of the ram 2 to the cutters 1.
The rotary cutter or cutters 1 are fixed to a hollow spindle or socket 5 carried
in two bearings 66 at the end of the ram or bar 2.
On the spindle or socket 5 and between the bearings 66 is a toothed bevel
wheel 7 driven by a toothed bevel wheel 8 fixed to the shaft 9 and on the opposite
end of this shaft 9 is fixed another toothed bevel wheel 10 which is driven by
another toothed bevel wheel 11 which is driven by the agency of a belt pulley 4
motion being communicated through a worm 13 and worm wheel 14 (see Figs. I
and 3) and toothed bevel wheels 15 and 16 from any convenient scource.
The ram or slide 2 is trenched out to receive the shaft 9 and bevel or other gear
which communicates motion to the rotary cutter or cutters 1 and thus the driving
gear is kept within the area of the ram 2 and a key seat can be cut in a hole or eye
practically the same diameter as the ram 2.
The ram or bar 2 is moved endways at such an angle as to give the required
taper to the key seats.
The ram or bar 2 is moved end ways automatically, while the rotary cutter 1 is
in operation, by means of the usual arrangements employed on boring bars namely
a screw 17 and nut 18 revolving at different speeds so as to give a slow traverse
with a comparatively quick revolution of the screw 17.
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―
The device for cutting key seats consisting of a rotary cutter driven by means of
bevel or other gear wheels as herein described and substantially illustrated as
illustrated by the accompanying drawings.
Dated this 13th day of March One thousand eight hundred and ninety-three.
JAMES BARBOUR,
By his Agent, Walter Brierley,
Penny Bank Chambers, Halifax.