Improvements in Apparatus for Drilling Fallers of Gill-boxes and like Frames.
Year: 1889

page_text: Date of Application, 20th Dec., 1889
Complete Specification Left, 20th Oct., 1890-Accepted, 22nd Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Drilling Fallers of Gill-boxes and
like Frames.
We, WILSON FORTUNE, and FRANK HOLDSWORTH BENTHAM, of the firm of Fortune
and Bentham, Richmond Road, Bradford in the County of York, Machine Comb
Makers, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in machines or apparatus for automatically
drilling the holes in fallers of gill boxes and like frames to receive the pins.
The said improvements consist in the combination and arrangement of mechanism
hereinafter described whereby the drill is alternately brought into operation and
removed from the hole at intervals in a similar manner to when it is operated by
hand, and also the improved arrangement for traversing the faller a distance between
the holes after each hole is finished.
The drill spindle is mounted and arranged in the ordinary manner and at the rear
end is connected to the usual spindle slide by which it is traversed longitudinally.
Tho feed pressure is applied by means of a lever similar to the ordinary band lever to
which an adjustable band is attached passing over a pulley and supporting a weight.
The drill is withdrawn from the hole at intervals by means of a cam mounted upon a
slowly revolving shaft operated by a band or, belt. The said cam at each revolution
engages a vibrating lever in connection with the above mentioned spindle slide and
thereby vibrating said lever so as to traverse said slide and spindle longitudinally and
withdraw the drill.
The fallers are mounted in the usual way in a holder formed in a saddle sliding on
a suitable slide and operated by a screw provided with a pawl and ratchet motion for
rotating it. The said pawl is pivoted to a disc or arm loosely mounted upon the end
of said screw and such disc or arm is connected to an arm projecting from a short
shaft parallel with the traversing screw. This short shaft is provided with an arm to
which is attached a connecting rod attached at the other end to a catch lever held
clear of the above mentioned vibrating lever by means of a catch.
Each time a hole is finished the drill point passes right through, thus a greater
traverse is imparted to the drill spindle and connections and the vibrating lever is
moved therewith so that it, or a projection thereon, disengages the catch from said
catch lever and allow such lever to swing over, under the influence of a weight or
spring, and through the medium of the connecting rod and the short shaft and its
attachments slip the above mentioned pawl backwards over one or more teeth of the
ratchet wheel. Then as the cam withdraws the drill from the finished hole the
vibrating lever or other moving part restores the catch lever to its original position
and it again engages the catch and at the same time operating the pawl, through the
medium of the above described connections, so that it more or less turns the ratchet
wheel and traverses the faller fixed to said saddle a distance equal to the distance
between the holes.
The above mentioned connecting rod is preferably arranged so that it is capable of
being compressed longitudinally, and a spring is provided to keep it its normal length,
thus if from any reason the screw, saddle or other part gets fast the compressibility of
said rod prevents breakage.
The said catch and catch levers are preferably provided with screw or adjustable
contact pieces so as to regulate the time at which they are operated.
The said cam is so arranged that it can be readily thrown out of operation when it
s desirable to work the machine he hand

page_text: A stop motion is preferably attached adapted to stop the drilling operation at the
end of the faller or to suspend the operation at any intermediate point.
Dated this 18th day of December 1889.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE
SPECIFICATION.
Improvements in Apparatus for Drilling Fallers of Gill-boxes and
like Frames.
We, WILSON FORTUNE and FRANK HOLDSWORTH BENTHAM, of the firm of Fortune
and Bentham, Richmond Road, Bradford in the County of York, Machine ('omb
Makers, 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 machines or apparatus for automatically
drilling holes in fullers of gill boxes and like frames to receive the pins.
The said invention consists in the improved combination and arrangement of
mechanisin hereinafter described for alternately bringing the drill into operation and
removing it from the hole at intervals in a similar manner to when it is operated by
hand, with the improved arrangement for traversing the faller a distance between the
holes after each hole is finished as well as the stop motion adapted to stop the traverse
when the end of the faller is reached.
Reference is to be had to the accompanying sheet of drawings forming a part of
this Specification in which similar letters of reference indicate corresponding parts in
each of the figures.
Figure 1, is a side elevation of the gantry or bed and such other parts of an
ordinary faller drilling machine as are necessary to illustrate the application of our
improvements.
Figure 2, is a plan view of the same.
Figure 3, is a view of a modification on a larger scale, and
Figures 4, 5, 6, 7 and 8 are views of detail hereinafter referred to.
The drill spindle A is mounted and arranged in any convenient manner and at the
rear end is connected to the usual spindle slide B by which it is traversed longi-
tudinally. This traverse, to advance the drill spindle and feed the drill, is effected in
the ordinary way by means of the lever C, represented in Figure 2, connected to the
slide B similarly to the ordinary hand lever. The lever is mounted upon the
vertical stud D and a band or strap E attached to such lever passes over the pulley F
mounted on the bracket G fixed to the gantry H and supports the weight F¹, the size
of which regulates the feed pressure of the drill.
"
The drill is withdrawn from the hole at each rotation of the cam J fixed upon the
slowly revolving shaft. J' mounted in the bearings Land driven by the pulley M.
The cam Jacts upon the loose pin K and traverses the slide B to withdraw the drill
at each revolution of the cam whether it has completely drilled a hole or not. The
pin K is loosely mounted in the boss N of the slide B so that by lifting such pin it is
disengaged from the cam J, then the machine may be used for hand drilling or
centering" by hand. For this purpose a slit a is formed in the upper part of the
boss N and a stud b projecting from the pin K lies therein when the pin is down but
by lifting the pin and slightly turning it such stud rests upon the top of the boss and
holds the pin clear of the cam.
The fallers are mounted in the usual way in a holder O formed on the face of the
saddle P sliding on the slide Q and operated by the screw R provided with the
ratchet wheel Sfixed on its end and engaging the pawl T. The pawl T is pivoted
upon the disc U loosely mounted upon the screw behind the ratchet wheel and the
winch handle V is also attached to such disc in the position shown so that when the
disc is free to move the weight of the handle turns such disc until the stud e pro-
jecting from the back of the disc comes against the back of the slide Q thus slipping

page_text: the pawl back upon the ratchet. The forward motion of the pawl and ratchet to turn
the screw R and traverse the saddle P is communicated from the rocking shaft W
actuated in the manner hereinafter described and provided with an arm Y which
when its shaft is rocked comes against the stud and turns the disc U and with it the
pawl and ratchet until the stud c comes against the face of the slide Q in the position
represented in the drawings.
To stop the traverse of the saddle P when the end of the faller is reached or at any
intermediate point we employ a rod d' mounted in bearings and d³ and capable of
a little longitudinal motion. An enlargement d' shown on a larger scale in Figure 7
at the end of the rod d' is provided with a recess d³. A hook dis pivoted in a slit
across the bearing and is normally held up clear of the stud c' by its shank resting
upon the extreme end of as shown in Figures 5 and 6. But by imparting a slight
longitudinal motion to the rod d' the shank of the hook de drops into the recess
and the hook engages the stud c' so that the disc is held stationary. The said longi-
tudinal motion is imparted to the rod d by the vertical stud a fixed in the top of the
saddle each time it reaches one of the adjustable studs ª projecting horizontally from
the rod d¹. In case the saddle is traversed in the opposite direction the recess dis
not required as the hook may be simply held up by the end of the rod which is with-
drawn to allow it to fall and engage the stud c¹.
The rocking shaft W is mounted in haugers e and e' as shown in Figure 4 fixed to
the underside of the slide Q. The short arm e fixed at the other end of Wis
connected by the rod i to the long arm h of the catch lever h¹. The catch lever h¹ is
normally held in the position shown by the spring catch j engaging the top /³ of such
lever, but when the drill completes each hole in the faller and passes through, the
parts are so relatively arranged that the end of the slide B reaches the adjusting
scrow in the arm of the catch and turns such catch on its pivot. Then the
lever is free to allow the weight W¹ to turn the shaft W and its connections so that
the arm Y leaves the stud d and allows the disc U to turn until its stud c touches the
back of the slide Q. The motion of the lever h¹ is limited so that the back of the
pin K does not reach the projection ³ on the arın 2 until the drill is completely clear
of the fuller then it pushes the lever back until it again engages the catch and
actuates the pawl and ratchet by the connecting mechanism so as to traverse the
saddle and bring the faller into position for drilling the next hole.
The lever is separately illustrated by Figure 8.
The connecting rod is made in two pieces i and i¹ one fitting telescopically into
the other and a spring is introduced between a regulating nut and the end of .
By this means any superfluous motion of the lever after the ratchet is turned to the
full extent is absorbed by the spring and the compressibility of the rod prevents
breakage in case any of the parts get out of order.
In the modified arrangement shown in Figure 3, a vibrating lever m is introduced
between the cain J and the slide B. The lever m is provided with three arms one of
which m' bears upon the cam by which it is vibrated. The arm m³ engages the pro-
jection B on the underside of the slide and the arm m³ lifts the catch each time a
hole is completed so as to disengage it from the top h³ of the lever h¹ and the action is
otherwise the same as that previously described.
To throw the automatic mechanism out of gear the shaft J' is capable of being
moved longitudinally by means of the lever n so as to place the cam in the position
shown by the dotted representations clear of the arm m². The set screws », rare
provided for the purpose of adjustment.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we wish it to be understood
that we are aware automatic faller drilling machines have previously been used but
we declare what we consider novel and claim is :-
1. In a faller drilling machine, the use of a removable pin K in the spindle slide,
or a cam capable of being moved longitudinally, for the purpose of disconnecting the

page_text: automatic mechanism when it is required to operate the machine by hand, sub-
stantially as herein shown and described.
2. The combination with the lever h¹ of a catch j adapted to hold said lever
and only release it when each hole is drilled substantially as herein shown and.
described.
3. The use of a compressible or spring connection between the lever h¹ and the
disc U, substantially as herein shown and described and for the purpose specified.
4. The stop mechanism adapted to stop the action of the ratchet actuating the
traversing screw when the faller is finished or at any intermediate point, substantially
as herein shown and described and illustrated
Dated this 17th day of October 1890.
DRACUP & NOWELL,
Bradford, Agents.