Adjustable and Affixable Mechanism for Drilling and other like Machines for Determining Depths of Holes, said Mechanism Acting Automatically to Return the Tool.
Year: 1891

page_text: Date o Application, 23rd Apr., 1891
Complete Specification Left, 25th Jan., 1892-Accepted, 12th Mar., 1892
PROVISIONAL SPECIFICATION.
Adjustable and Affixable Mechanism for Drilling and other like
Machines for Determining Depths of Holes, said Mechanism
Acting Automatically to Return the Tool.
I RODOLPHE GUSTAVE FIÈGE of 11 Queen Victoria Street, City of London,
Engineer, do hereby declare the nature of my said invention to be as follows :-
This invention has for object providing drilling machines, boring machines, and
other machines which have a feeding action of a tool into metal and other material-
for the purpose of making holes or slots therein-with self acting appliances which
can determine the depth to which such tool shall enter and then to return the tool
out of the hole or slot to enable the material to be moved onwards ready for the
next descent of the tool for making a fresh hole or slot at another part of the
material, whereby all the holes or slots so made shall be mathematically alike as
regards their depths.
The appliances can be fitted to any existing drilling, or boring machine, and the
depth to which the tool shall enter can be set or regulated at the will of an
attendant.
For the purpose of my invention I fit over the main or tool carrying spindle a
sleeve feathered to revolve with it. This sleeve has a toothed wheel preferably at
the lower part in gear with another wheel on a separate spindle, said wheel running
idle when the main spindle rotates. The boss of the second spur wheel is provided
with a half clutch or catch, and above this the other half clutch or catch is on a
sleeve or tube encircling the supplementary spindle, said second sleeve or tube is
provided with a vernier or scale and a couple of rings adjustable and fixable on the
tube determining the distance of travel of the drill or other tool on the main
spindle by a guide or its equivalent carried by the main spindle striking against
the lower ring, this causing the clutches to engage and the spur wheels to turn for
reversing the travel of the tool. As the tool is lifted to a given height the guide
strikes against the upper ring to lift the upper half clutch out of gear, which allows
the tool to again descend for making a fresh hole and so on alternately regulating
the raising and lowering of the tool without affecting the driving gear of the main
shaft or the rotation of the tool therefrom.
I purpose arranging a spring to hold the two half clutches apart until the lever
operates the lower ring to force the sleeve downwards which overcomes the pressure
of the spring and permits the clutches to engage.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said R. G. Fiège.
COMPLETE SPECIFICATION.
Adjustable and Affixable Mechanism for Drilling and other like
Machines for Determining Depths of Holes, said Mechanism
Acting Automatically to Return the Tool.
I, RODOLPHE GUSTAVE FIÈGE, of 11 Queen Victoria Street, City of London,
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 has for object, providing drilling machines, boring machines, and

page_text: other like machines which have a feeding action of a tool into metal and other
material for the purpose of making holes or slots therein-with self acting
appliances which can determine the depth to which such tool shall enter and then
to return the tool out of the hole or slot to enable the material to be moved onwards.
ready for the next descent of the tool for making a fresh hole or slot at another
part of the material, whereby all the holes or slots so made shall be mathematically
alike as regards their depths.
The appliances can be fitted to any existing drilling, or boring machine and the
depth to which the tool shall enter can be set or regulated at the will of an
attendant.
My invention will be understood by the annexed drawings.
Figure 1 is an elevation of a drilling machine with my improved appliances
applied thereto.
Figure 2 a vertical section through the two heads of the machine.
Figure 3, plan through lines a, b, of Figure 2.
Figure 4 front elevation of upper part of machine.
Figure 5, transverse section of spindle and sleeve.
Figure 6, section of upper half clutch.
For the purpose of my invention, I fit over the main spindle A a loose sleeve B.
This sleeve B has a toothed wheel C preferably at the lower part in gear with
another wheel D on a separate spindle, said wheel C running idle when the main
spindle A rotates. The boss of the first spur wheel C is provided with a half
clutch or catch E, and above this, the other half clutch or catch F is on the sleeve
or tube G encircling the main spindle A and feathered to revolve with it, said
second sleeve or tube G is provided with a vernier or scale and a couple of
rings H, I, adjustable and fixable on the tube G determining the distance of travel
of the drill or other tool spindle by a guide J, or its equivalent (carried by the
tool spindle feed screw K) striking against the lower ring I, this causing the two
half clutches E, F, to engage and the spur wheels C, D, L, to turn for reversing
the drilling spindle. As the tool spindle is lifted to a given height, the guide J
strikes against the upper ring H to lift the upper half clutch F out of gear, which
allows the tool to again descend for making a fresh hole and so on alternately
regulating the raising and lowering of the tool without affecting the driving gear of
the main shaft, or the rotation of the tool therefrom.
I purpose arranging a spring M Figure 6 to hold the two half clutches apart
until the guide J operates the lower ring I to force the sleeve G downwards, which
overcomes the pressure of the spring and permits the clutches to engage.
In connection with the sleeve G, I arrange a carrier N and a vertical rod P,
which when the upper half clutch F and sleeve G are being forced down by the
guide J the rod presses on a plate Q extending from the back end of the ordinary
feed paul R, this depression raises the paul R out of the teeth of the ratchet
wheel S and stops the feed, said rod when released from the plate in its upward
travel, leaves the paul R remaining clear of the ratchet wheel until replaced by a
workman.
The feed is effected in the ordinary manner, viz.: The drill spindle has an
eccentric e which gives motion to a crank d (Figure 3), this by the short spindle e
causes the segmental wheel e¹ to reciprocate, and so by the quadrant fto move the
paul R back and forth over the teeth of the crown ratchet wheel S, the nut of
which draws the screw K downwards while the paul is in gear.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Fitting the main spindles of drilling and boring machines with a vernier or
scaled sleeve having adjustable rings for impact of travelling guide of feed screw,
for operating a clutch and so determining the depth of action of a tool and reversing
the travel of the tool, as described and as shown in the annexed drawings,

page_text: 2. In connection with the features referred to in Claim 1, the arresting spring M
for holding the sleeve G in its upward position, and yielding for the downward
motion, substantially as described and shown.
3. In combination with the above claimed elements, the carrier N and rod P for
tilting the paul R out of the feed ratchet wheel S, as set forth and substantially
as represented by the annexed drawings.
TL001
T
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Rodolphe Gustave Fiège.