Improvements in Profiling Machines.
Year: 1897

page_text: Date of Application, 3rd Sept., 1897
Complete Snocification Loft 2nd June 1905
Accented
Card Jule
1900
Improvements in Profiling Machines.
We, THOMAS WEBSTER and ARTHUR EDWARD BENNETT, both of Atlas Works,
West Orchard, Coventry, Engineers, do hereby declare the nature of this invention
to be as follows:-
This invention relates to improvements in profiling machines, and its object
is to provide improved means whereby articles such for instance as cycle cranks
or connecting rods or links, having an eye at one or both ends, may be milled or
profiled along their lengthwise edges, and around their one end, and in some
cases around both their ends automatically at one fixing or setting of the article.
The machine consists broadly, as follows:-
Upon a suitable frame is mounted a slide bed, upon which again is carried a
horizontal sliding piece, whose one end is adapted to and carries a vertical sliding
piece. The horizontal sliding piece is held forward in one direction by springs or
what is preferable, by cord or chain passing therefrom over a pulley at whose
lower ends is a weight but which may be drawn in the opposite direction by a lever
or rack and pinion or other device. The working of the vertical slide is effected
by means of a screw, operated preferably from the top. This screw is preferably
operated by means of a vertical spindle which is connected to the said screw by
spur wheels. The said vertical spindle is actuated by suitable gearing such as
bevil wheels or worm and worm wheels. Upon the vertical slide piece are formed
bearings to carry a transverse rotating or part rotating spindle, which said rotation
may also be effected by the aforesaid vertical spindle by means of worm gearing,
but both in this case and also in the case of the spur gearing for driving the
screw, the said gearing is driven by frictional gearing so that when the resistant
force reaches a certain point, the driving shall slip. Upon the one end of the
tranverse rotating spindle is mounted a chuck plate upon which may be secured
a former and the work to be operated upon, such work being so secured that the
eye at its one end is concentric with the spindle. This rotating spindle is pro-
vided with a locking device so that it may be locked in given positions during its
vertical movement, but may be released at given positions to permit of its rotating
motion. This may be done by having upon the spindle a plate around whose
periphery a number of notches may be made into any one of which a bolt may
engage which is carried upon the slide. This bolt is operated by the motion of
the slide itself. The cutter and the dummy stop is carried in a separate head
which may be carried upon or from the same base, and is driven in any desirable
convenient manner. The operation of the mechanism so far described is as
follows: The vertical sliding piece is lowered until the highest point of the one
side of the article is brought in line with the cutter. The machine is then started
and the slide rides as the work proceeds. As it thus proceeds any horizontal devia-
tion in the shape of the article is accommodated by the horizontal yielding of the
horizontal slide, the weight keeping it up to its work.
Having arrived in its accent to the centre line of the eye, we provide a catch or

page_text: lock bolt, to automatically check its further progress, by locking the vertical
slide with its bed, and at the same time to unlock the transverse spindle to permit
of its rotating motion, which now proceeds until half a circle has been made,
thus performing the half circle profiling around the end of the article. The
rotating motion is now again locked, and the vertical released and a further
upward motion takes place to profile down the opposite side (edge) of the article.
In some cases similar articles may have a part rounded end at each end, in
This may be
which case it may be desirable to profile it also around both ends.
done either by resetting the article upon the plate so as to bring the unwrought
end into the central position of the spindle, when the rotary profiling may as
before be proceeded with. Or we may provide that the head which carries the
cutter may be made to move around a circle or part of a circle, so that when either
of the ends of the article is in line with the cutter, the said cutter may be then
made to travel around the article which is for the time being made stationary.
It will be clear that the order of the horizontal and vertical slides may be
reversed or modified without affecting the principle of the arrangement.
In some cases the shapes to be profiled may be such that when passing certain
points, there may be some danger of breaking the former or the cutter &c., unless
the slide was moved suddenly to a given extent by means independent of the shape
of the former. In such cases we may employ a bracket having an inclined surface
against which a stop upon the slide shall come in contact, and thus move it
forward, to permit of the cutter &c. passing over the projection or angle upon the
article.
We, THOMAS WEBSTER and ARTHUR EDWARD BENNETT, both of Atlas Works,
West Orchard, Coventry, Engineers, 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 relates to improvements in profiling machines, and its object
is to provide improved means whereby articles such for instance as cycle cranks
or connecting rods or links, may be milled or profiled along their lengthwise edges
and around their one end, and in some cases around or partly around their ends
automatically at one fixing or setting of the article.
In order to more clearly explain this our invention we have appended hereunto
illustrated sheets of drawings upon which are figures and numbers of reference,
similar numbers referring throughout the several views to the same thing or part.
Fig. 1, is a front view of such portions of a machine which embraces this our
invention.
Fig. 2, is a similar end view of the invention.
Fig. 3, is a part sectional plan view showing the locking device &c. as seen on
line AB, Fig. 1.
Fig. 4, is an end view in detail of the former and its controlling roller &c.
The machine consists broadly as follows:-Upon a suitable frame 7, is mounted
a slide bed 8, upon which again is carried a saddle 9, and upon which again is
carried the horizontal sliding piece 10, whose one end is adapted to and carried
a vertical sliding piece 11. The horizontal sliding piece is held forward in one

page_text: direction by a chain 12, passing therefrom over a pulley 13, and at whose lower
end is a weight 14. The working of the vertical slide 11, is effected by means of
a screw 15, operated preferably from the top by means of a vertical spindle 16,
which is connected to the said screw by spur wheels 17 and 18. The said vertical
spindle 16, is actuated by suitable gearing such as bevil wheels 19 and 20, and
pulley 21. Upon the vertical slide piece 11, are formed bearings 22, to carry
a transverse rotating or part rotating spindle 23, which said rotation may also
be effected by the aforesaid vertical spindle 16, by means of worm 24, gearing
into wheel 25, but both in this case and also in the case of the spur gearing 17
and 18 for driving the screw 15, they are driven by continuous frictional contact
at 26, and at 27, so that when the resistant force reaches a certain point the driving
shall slip. Upon the one end of the transverse rotating spindle 23, is mounted a
chuck plate 28, upon which may be secured a former 29, and the work 30, to be
operated upon; such work being so secured that the eye or centre 31, at its one
end is concentric with the spindle 23. This rotating spindle is provided with a
locking device so that it may be locked in given positions during its vertical
movement, but may be released at given positions to permit of its rotating motion.
This may be done by having upon the periphery of the plate 28, notches 32,
33 &c. into any one of which a detent 34, may engage, which is carried or pivoted
upon the bracket 35 upon the slide 11. This detent is operated by the motion of
the slide 11. The milling cutter 36, is carried in spindle 37, upon headstock 38,
and driven by pulley 39. The dummy roller 40, is carried upon bracket 41,
which is fixed upon the bed.
The operation of the mechanism so far described is as follows:-The vertical
sliding piece 11, is lowered until the highest point 42, of the one side of the
article 30, is brought in line with the cutter, the position of which latter is shown
in dotted lines in Fig. 4. The machine is then started and the slide 11, rides as
the work proceeds. As it thus proceeds, any horizontal deviation in the shape of
the article 30, is accommodated by the horizontal yielding of the horizontal
slide 10, the weight 14, keeping it up to its work.
The slide 11, having risen until the centre of the eye 31, is level with the
cutter 36, as seen in Fig. 1, the further upward movement is prevented by the
stop bracket 44, coming in contact with the adjustable stop 45, which is secured
to the pillar 46. This resistance overcomes the friction clutch 27, and hence the
Just before
wheels 17 and 18 continue to rotate but the screws 15 does not move.
this takes place the end 34, of the detent 34, is depressed by its coming in contact
with the stop 47, and thus its front end is lifted clear of the notch 32, in the
plate 28. It should now be noticed that the wheel 25, has been always in motion
but could not rotate the spindle 23 by reason of the plate 28 being locked. Now
that it is unlocked however, the wheel 25 rotates the spindle and with it the
work 30. This continues until the spindle has made the half circle (or other
determined portion of the circle). At this point the stop piece 48, in its rotation
strikes against the arm 49, which is secured to the pillar 46, and in so doing partly
turns it around so that the stop 45, is moved from above the bracket 44, and at the
same time or slightly in advance, the stop 47, is thereby moved from off the detent
end 34. When the detent is thus released it is again pushed into the notch 33,
by the spring 50. The rotation of the spindle 23, is now again checked and the
slide 11, free to continue its upward movement until the milling has been com-
pleted along the opposite side of the article 30, when the machine may be stopped
by withdrawing the driving nut 51, which engages with the screw 15 (see Fig. 3)
by means of the lever 52. The sliding piece 11, is preferably balanced by means
of weight 53, connected by chains 54.
In some cases similar articles may have a part rounded end at each end, in
which case it may be desirable to profile it also around both ends. This may be
'done by resetting the article upon the plate so as to bring the unwrought end into
central position of the spindle, when the rotary profiling may as before he pro-
ceeded with.

page_text: It will be clear that the order of the horizontal and vertical slides may be
reversed or modified without affecting the principle of the arrangement.
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. In profiling machines the combination with the horizontal sliding piece 10,
of the vertical slide 11, carrying spindle 23 and former 29, with the latch 34
releasing stop 47 stop piece 48 operating arm 49, and clutches 26 and 27 with their
necessary driving and resisting mechanism the whole mounted upon suitable
frame 7 bed 8 with headstock 38 carrying tool 36 all substantially as set forth and
shown and for the purposes specified.
2. The slide 11, with latch 34, and stop bracket 44, engaging respectively with
stops 47 and 45 for the simultaneous control of the vertical movement of slide and
the rotation of spindle 23 substantially as shown and described.
3. The spindle 23, and plate 28, with stop 48 and arm 49 in combination with
bracket 44 and stop 45 all substantially as set forth and shown.
4. The combination of the spindle 23, with continuous contact clutch 26 and
the plate 28, with notches 32 and 33 and latch 34 with stop 47, substantially as
set forth and shown.
Dated this 1st day of June 1808
CHARLES T. POWELL,
Applicants' Agent, 12, Cherry Street, Birmingham.
CHARLES T. POWELL,
Applicants' Agent, 12, Cherry Street, Birmingham.