Improvements in Drilling Machines.
Year: 1898

page_text: Date of Application, 9th Sept., 1898-Accepted, 12th Nov., 1898
COMPLETE SPECIFICATION.
Improvements in Drilling Machines.
I, JAMES LARKING JONES, of Starbuck, in the County of Columbia, State of
Washington, one of the United States of America, Stock-raiser, do hereby declare
the nature of this invention, and in what manner the same is to be performed, to
be particularly described and ascertained by the following statement:-
The invention relates to improvements in means for applying copper-plates
to steel or iron vessels, an especial object being to bore holes in the rivets, said
holes being threaded to receive copper pins or pegs that secure the copper-plates
in place. A further object of the invention is to provide an apparatus for boring
holes which will drive a series of drills or boring tools and properly feed the same
to the work, the drills being susceptible of independent adjustment as to distance
apart and to and from the work upon which they are operated. The invention
contemplates a construction in which the several drills are carried by a movable
frame which feeds them uniformly to the work, the said drills being geared to
the driving-wheel or power mechanism in such manner that they can be adjusted
laterally with respect to each other, and also have an independent vertical adjust-
ment to accommodate any unevenness in the plate or object with which they
engage or operate upon.
With the above objects in view, the invention consists in the manner of apply-
ing the copper-plates, and in the apparatus providing a stationary frame present-
ing guides, a second frame movable within said guides and carrying bearings
in sliding engagement therewith, the bearings supporting transverse shafts geared
to horizontal pinions having axial openings which receive the bits or drills, said
shafts being connected to each other and to the power mechanism by sprocket
wheels and a chain or chains; together with means for raising and lowering the
movable frame, as hereinafter described and claimed.
Referring to the drawings:-
Figure 1 represents a vertical section of the machine taken on the line x-x,
Figure 2.
Figure 2 represents a horizontal transverse section on the line y―y, Figure 1.
Figure 3 is a central detail sectional view at right-angles to that shown in
Figure 2.
Figure 4 is a detail sectional view showing the manner of pivoting the drill
frame in its adjustable boxings.
Figure 5 is a similar view showing the manner of applying the plates, and
Figure 6 is a detail view of the pivot and the adjustable bearing for the actuat-
ing shaft.
1-1 indicate the sides of the box frame, preferably rectangular in form, and
having front and rear covers 2 and 3, the sides of the box being of a sufficient
depth to accommodate and guide the necessary movements of the drill frame
and drills, and the cover plates having large central openings permitting the
passage through them of the drills and their actuating shaft. 4 indicates a rect-
angular frame plate fitted and moving within the box frame and adapted to be
adjusted back and forth therein between the cover plates 2 and 3. The plate 4
has a large central circular opening, the wall of which is rabbeted or grooved to
receive and permit the rotary movement within it of the disc 4°, having a central

page_text: rectangular opening 4b, the side walls of said opening being grooved to form
guideways for the bearings or boxings 5-5 adapted to slide in said
ways. These boxings are provided with tubular projections 5° and
form supports for the drill frame consisting of side pieces 6--6 connected by end
pieces 7-7 from which extend trunnions 8 which are passed into the tubular
bearings 5, said bearings being provided with set-screws 9, adapted to bear upon
the trunnions to secure the proper level or inclination of the frame. The side
pieces 6 of the movable frame which is located within the central opening in the
disc 4ª extend nearly the entire width of said opening and form means for sup-
porting the mechanism which operates the drills or boring tools. To this end
the side pieces 6 are provided in their upper surfaces with dovetail channels 10
extending longitudinally, and with these channels engage corresponding pro-
jections depending from bearing plates 11, adapted to slide upon said pieces.
The bearing plates at the centre of the movable frame support a transverse shaft
upon which is mounted a sprocket-wheel, said shaft carrying a bevel-wheel 13
in mesh with a horizontal bevel-wheel 14, supported by one of the bearing plates
and connected to a horizontal shaft 15 having a crank handle 16.
The bearing plates which support this part of the mechanism may be
rigidly secured to the central portion of the movable frame, as the sprocket-
wheel 12 forms the driving wheel. The other bearing plates are preferably
movable upon the side pieces, and when adjusted thereon are held by set-screws 17,
the sets of bearing plates corresponding in number with the number of drills
or boring tools which the device is intended to carry. Each set of bearing plates
supports a transverse shaft 18 having a sprocket-wheel 19 thereon, of the same
size as the sprocket-wheel 12, and said shaft has a bevel-wheel 20 in mesh with a
horizontal bevel-wheel 21, the latter having an enlarged hub or axle 22 which
engages its bearings and permits of an axial opening being formed in the bevel-
wheel. This axial opening is preferably square to receive the shank of a bit
or boring tool 23 held in place by a set-screw 24. Over the sprocket-wheels 12
and 19 passes an endless sprocket-chain 25 and this sprocket chain is held in
proper engagement with the intermediate sprocket-wheels by means of idle-
pulleys 26 supported by horizontal bars 27 carried by plates 28 which are also
in sliding engagement with the side pieces of the drill frame and held in adjustable
position by set-screws. The idle-pulleys are adapted to bear upon the sides of
the endless chain and by having them adjustable upon the movable frame they
can be brought to accommodate the position of the intermediate sprocket-wheels.
It will be understood that each horizontal bevel-wheel 21 is adapted to carry
a drill or boring tool which being detachably connected therewith will permit the
number to be increased as desired. In order to raise and lower the movable drill
frame, the ends of a cord 29 are passed through eyes 30 in the disc 4 and are
attached to eyes or rings 31 on the tubular bearings 5ª, so that by drawing upon
or slacking the loop of the cord, the drill frame can be raised or lowered as
desired. Any suitable means may be employed for holding it at the desired adjust-
ment. By mounting the trunnions 8 of the drill frame in the tubular boxings 5ª
said frame can be rocked for setting the drills at any desired angle of inclination
to the stationary frame and may be held at the desired adjustment by the set-
screws 9 passing through the boxes 5" and engaging the trunnions 8. To
accommodate this adjustment to the angle of the drill frame, the power shaft 15
is journaled near its outer end in a swiveling box 32 pivoted in ways 33 on the
block or plate 34 having grooved side walls engaging and adapted to slide upon
a slotted arching bar 35, the ends of which are grooved to engage the walls of
the circular opening in the cover plate 3. The block 34 is held at any desired
adjustment by the set-screw 36, and the arching support 35 which is adjustable
in the opening in the plate 3 to conform to the adjustment of the disc 4ª, is held
at the desired adjustment by set-screws 37. For adjusting the drills to their
work, the disc 4° is provided with a circular series of screw-threaded sockets 38
which engage the ends of screws 39-39. set one diametrically opposite to the

page_text: other and passing through perforations in the cover plate 3 and engaged by
thumb nuts 40, by the rotation of which the frame plate 4, disc 4" and drill frame
and drills can be adjusted as desired. Springs 41 surround the screws 39 between
the disc 4 and the plate 3, their tension being exerted to force the disc and the
drill frame and drills outward or away from the plate 3. The series of sockets 38
permit the rotary adjustment of the disc on the screws 39 for varying the angle
of presentation of the drill frame as may be required. The free ends of the
screws 39 are squared at 42 to receive a wrench for screwing them into or with-
drawing them from the sockets in the disc 4 when required.
The machine described is especially adapted for use in copper-plating iron or
steel vessels, in which the device can be suitably clamped against the side of the
vessel, and by operating the crank-handle 16 a number of the rivets are drilled
with holes at the same time. It can also be used for drilling holes in the copper
plates.
The holes that are drilled in the rivets of the steel-plating are threaded, so
that when the copper pins or pegs 43 are driven therein they will be firmly held
in engagement therewith, being headed to hold the plates in place. This forms
a simple and effective manner of applying the copper plates to steel or iron
vessels.
From the foregoing description in connection with the accompanying draw-
ings, the construction and operation of the device will be readily understood, for
when the drills or boring tools are properly set with the movable frame drawn
outward, by turning the crank handle the several boring tools will be rotated
simultaneously without the intervention of the sprocket-chain and wheels, and
the tension of the springs 41 will be sufficient, as the thumb nuts on the screws 39
are backed, to properly feed the drills or boring tools to their work. By sup-
porting the movable frame on trunnions in connection with the boxings, as herein-
before described, the said frame can be swung at an angle when so desired, and
held by the set-screws 9. The idle-pulleys serve to insure the proper engagement
of the sprocket-chain with the intermediate sprocket-wheels, and as the supports
of the idle-pulleys are adjustable upon the frame, they can be moved to accommo-
date the adjustment of the intermediate sprocket-wheels..
By the particular construction and arrangement of the parts described, I provide
for a wider range of adjustment, both in regard to the spacing of the bits or boring
tools and also insure their proper engagement with the work. The machine
greatly reduces the work of drilling holes in rivets for plating vessels, as a number
of drills or boring tools are driven by the operation of a single crank-shaft. It
will be apparent that the shaft 15, instead of being driven by hand, can be driven
from an engine or other suitable motor..
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is, to be performed, I declare that what
I claim, is:—
1. In a drilling machine, the combination with a stationary frame, of a frame
plate movable therein, adjusting means therefor, bearing plates independently
adjustable longitudinally upon the movable frame plate, transverse shafts mounted
in bearing plates and adjustable therewith and geared to horizontal pinions having
axial openings, bits or boring tools secured within said openings, and means for
driving the several transverse shafts in unison, substantially as and for the pur-
pose set forth.
2. In a drilling machine, the combination with a stationary frame, of a frame
movable therein, bearing plates mounted upon said movable frame, said bearing
plates being secured in adjustment by set-screws, transverse shafts secured in
the adjustable bearing plates and having sprocket-wheels mounted thereon, hori-
zontal pinions also supported by the bearing plates and geared to the sprocket
wheels, said horizontal pinions having axial openings to receive the bits or boring

page_text: tools, a sprocket-chain connecting the sprocket-wheels, and means for driving one
of the sprocket-wheels, substantially as and for the purpose set forth.
3. In a drilling machine, the combination with a stationary frame, of a frame
movable therein and having a series of bearing plates adjustable longitudinally
upon said movable frame, horizontal pinions supported by the adjustable bearing
plates and carrying the boring tools, means for driving the horizontal pinions
in unison from a single drive wheel, and means connected with said adjustable
frame for raising and lowering the same, substantially as and for the purpose
set forth.
4. In a drilling machine, the combination with a stationary frame, of a frame
movable therein and provided with bearing plates adjustable longitudinally
thereon, horizontal pinions supported in the bearing plates and having axial
openings to receive the bits or boring tools, shafts geared to the pinions and
having sprocket-wheels thereon, a sprocket-chain connecting the several
sprocket-wheels, one of said sprocket wheels being driven from a suitable power;
together with bearing plates adjustably mounted upon the movable frame and
carrying supports having idle-pulleys which engage the sprocket-chains, sub-
stantially as and for the purpose set forth.
5. In a drilling machine, the combination with a stationary frame, of a frame
movable therein having bearing plates adjustable longitudinally thereon, shafts
supported in the bearing plates and having sprocket-wheels mounted thereon,
horizontal pinions geared to the sprocket wheels and having axial openings to
receive the bits or boring tools, set-screws for adjustably attaching the bits or
boring tools to the pinions, a sprocket-chain connecting the sprocket-wheels, one
of said sprocket-wheels being driven from a suitable power, and means connected
with the movable frame for raising and lowering it relatively to the stationary
frame, substantially as and for the purpose set forth.
6. In a drilling machine, the combination with a supporting frame or disc
having a central opening provided with grooved side walls, of boxings guided
by and moving in said grooves and having openings or bearings, a drill frame
located within the supporting frame and having trunnions or stub-axles which
bear in the blocks or boxings, set-screws in said boxings for holding said trunnions
at the desired adjustment, the said movable frame having a series of bits or
boring tools adjustable thereon and geared to be operated in unison from a driving
power, substantially as shown and for the purpose set forth.
7. In a drilling machine, the combination with a stationary frame, of a frame
plate adjustable therein, a rotatable disc mounted in a central circular opening in
said frame plate and provided with a central rectangular opening, a drill frame
journaled in boxes in said disc opening, drills carried by said drill frame, and
mechanism for actuating said drills in unison made adjustable to conform to the
adjustment of the drill frame, substantially as described.
8. The combination in a drilling machine, of a box frame, a frame plate adjust-
able back and forth therein and having a circular opening, a rotatable disc
mounted in said opening and having a central rectangular opening, a drill frame
mounted in said disc opening and carrying a series of drills geared together to
be operated in unison, means for actuating said drills, and means for adjusting
said drill frame back and forth or longitudinally and in the arc of a circle, sub-
stantially as described.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.