IMPROVEMENTS IN DRILLING MACHINES FOR DRILLING THE HOLES IN GUIDE PLATES, CARD CYLINDERS, AND OTHER PARTS IN CONNECTION WITH JACQUARD MACHINES, PART OF THE TYDRAUFMANNG DETA ATEA Á DOLINADED FOR PINATING MERAL PLAT
Year: 1871

page_text: LETTERS PATENT to William Bowker, of Manchester, in the County
of Lancaster, for the Invention of "IMPROVEMENTS IN DRILLING
MACHINES FOR DRILLING THE HOLES IN GUIDE PLATES, CARD CYLINDERS,
AND OTHER PARTS IN CONNECTION WITH JACQUARD MACHINES, PART OF THE
TYDRAUFMANNG DETA ATEA Á DOLINADED FOR PINATING MERAL PLAT"
PROVISIONAL SPECIFICATION left by the said William Bowker at
the Office of the Commissioners of Patents, with his Petition, on
the 11th October 1871.
I, WILLIAM BOWKER, of Manchester, in the County of Lancaster,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
DRILLING MACHINES FOR DRILLING THE HOLES IN GUIDE PLATES, CARD CYLINDERS,
AND OTHER PARTS IN CONNECTION WITH JACQUARD MACHINES, PART OF THE
IMPROVEMENTS BEING ALSO APPLICABLE FOR PUNCHING METAL PLATES," to be
as follows:-
This Invention consists in improved drilling machinery adapted for
drilling the holes in the card cylinder, the needle board, bottom board,

page_text: cumber board, and spring box of jacquard machines, and also the holes in
the plates used for guiding the punches employed for punching the
holes in the cards. In the several parts of these machines the holes are
in scries of various numbers with intermittent spaces between the series,
and the first part of the improvements consist in employing several
drills and giving a self-acting motion to the carriage to which the parts
to be drilled are fixed.
At one side of the carriage is fixed a rack having teeth corresponding
with the centres of the holes, and it is intended that this rack and table
shall move by self-acting means immediately after one set of holes are 1
drilled.
The spindles of the drills work in adjustable frames, and the tops of
the spindles are jointed by short arms to one end of levers, to the other
ends of which are jointed vertical rods having at the bottom a con-
necting bar with screws to keep the levers uniform. The rod of the 1
central lever is provided with a number of teeth or cogs gearing into a
toothed wheel having at intervals a tooth left out, and on this central
rod is fixed a catch which can be adjusted as required.
Below the carriage there is a long lever jointed to the framework
of the machine, the lever having at one end a knuckle joint which 2
can be acted upon by the catch of the central rod, and at the other
end a rod for raising a catch out of gear of the teeth of the rack when
required.
A
When the machine is at work the drills descend until the teeth or
cogs on the central rod arrive at one of the spaces in the toothed wheel, 2
and then the weight of the cross bar and weights connected to it raise
the drills and depress the central rod so as to cause the catch to act on
the knuckle joint and raise the catch out of the rack, which then moves
forward by a weight in the usual manner; and this part of the Invention
is also applicable for punching the sheet-iron plates used instead of 8
bottom boards for metal cards and other similar articles.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Bowker in the Great Seal Patent Office
on the 11th April 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BOWKER, of Manchester, in the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of October, in the
year of our Lord One thousand eight hundred and seventy-one, in
the thirty-fifth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said William Bowker, Her
special license that I, the said William Bowker, my executors, admi-
nistrators, and assigns, or such others as I, the said William Bowker,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
IMPROVEMENTS IN DRILLING MACHINES FOR DRILLING THE HOLES IN GUIDE
PLATES, CARD CYLINDERS, AND OTHER PARTS IN CONNECTION WITH JACQUARD
MACHINES, PART OF THE IMPROVEMENTS BEING ALSO APPLICABLE FOR PUNCHING.
METAL PLATES," upon the condition, amongst others, that I, the said
William Bowker, by an instrument in writing under my hand and seal,
should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
66
Patent.
NOW KNOW YE, that I, the said William Bowker, do, hereby
declare the nature of my said Invention, and in what manner tho
same is to be performed, to be particularly described and ascertained
in and by the following statement, that is to say:—
This Invention consists in improved drilling machinery adapted for
drilling the holes in the card cylinder, the needle board, bottom board,
cumber board, and spring board. of jacquard machines, and also the
holes in the plates used for guiding the punches for punching the holes
in the cards. In the several parts of these jacquard machines the holes

page_text: arc in a series of various numbers, with intermittent spaces between the
series, and for drilling the holes I employ several drills and give a self-
acting motion to the carriage and table to which the boards, plates, or
other parts are fixed.
The manner in which this Invention is to be performed will be clearly
understood by the following particular description thereof, referenco
being had to the figures and letters on the accompanying Sheet of
Drawings, in which Figs. 1 and 2 are front and end elevations of one of
my improved drilling machines adapted for three drills, and Fig. 3 a
back view, and Fig. 4 a plan of some of the parts; and in Figs. 1 and 2
a represents the end frames of the machine; b, c, the tie rods; d, the
drills; c, the table to which the boards, plates, and pieces to be drilled
are fixed; f, the carriage which supports the table, and 9, the bed on
which the carriage works. The spindles h in which the drills are
placed are fitted in drill stocks i carried by frames / on rods / fixed to
blocks m bolted or screwed to the end frames a, and these blocks carry
ends of screws n having their other ends supported in the central frame
k and kept in their places by pins and washers. The screws n fit nuts
in the frames k, so that when the screws are turned more or less either
way the frames with their drill stocks and drills can be placed nearer to
.or farther from the central drill stock and drill, which always remain in
the centre of the machine. The drill stocks i have projecting circular
rims o used as pulleys, which are connected by straps p to any driving
pulley; and in the drill spindles / there are slots q in which are fitted
the ends of screws r or keys, so that when the drill stocks revolve tho
spindles can not only revolve with them, but rise up and down by means
of the slots.
The tops of the spindles are jointed by short arms to one end of
lovers & working on the tic rod b, and to the other ends of the levers aro
jointed vertical rods u, v, having at the bottom a connecting bar w with
screws for the purpose of keeping the cutting edges of the drills level
with each other by the adjustment of the levers . The rod v of the
central lever consists of two bars, to which are rivetted or otherwise
fixed one or more teeth y acted upon by a toothed wheel = fixed to the
shaft a' and having as many teeth as required, and on this central rod v
there is a catch 6', which can be adjusted and fastened at any desired
position.

page_text: corresponding in pitch with the centres of the holeś to be drilled, and
the rack, table, and carriage are kept stationary by the catch dand
spring e', Fig. 3, when one set of holes are being drilled, but when the .
drilling is completed the catch is raised and the rack, table, and carriage
are moved forwards the length of a tooth by the weight ƒª.
Below the bed of the carriage there is a long lever g¹ jointed to a
hanger h¹ fixed to the bed, the lever having at one end a knuckle joint
*' and at the other end a rod for raising the catch d' out of gear with
the teeth of the rack when required, the knuckle joint yielding for the
purpose of enabling the lever g¹ to be stationary when the central rod v
and catch move upwards.
On the driving shaft there is a pulley connected by a strap n' to one
or other of the pulleys o', p', according to the hardness of the material
which has to be drilled; and to these pulleys is fixed a pinion a', which
with the pulleys work on a stud lª fixed to one of the end frames a,
and the pinion s¹ communicates by gearing with a toothed wheel u³
fixed to the shaft a¹ in order to give a slow revolving motion to the
toothed wheel. At each end of the table e there is a plate o' having
notches w¹ in which are entered projections on the handles ¹ acted upon
O by the springs y', the notches being at distances apart corresponding
with the required transverse centres of the holes in the boards, plates, or
pieces to be drilled, so that when one longitudinal line of holes are
drilled the handles ¹ are pulled back and the table moved transversely
to the next notch.
When the board, plate, or piece to be drilled is fixed on the table and
the cutting parts of the drills placed in their propêr positions, one of the
teeth of the toothed wheel is placed in contact with a pin or cog y on
the central rod v, as seen in Fig. 2, so that when the machine is set to
work and the drills are turning, the toothed wheel as it revolves by
means of the pulley o' and gearing t, u, shall raise the central rod v and
give pressure to the drills as long as the teeth are in contact, the time of
contact corresponding with the thickness of the picces to be drilled. As
soon as the holes are drilled the tooth on the toothed wheel escapes
from the tooth on the central rod, and then the rods u, v, and cross bar
5 10 descend by their own weight so as to raise the drills out of the holes,
and at the same time the catch b' acts on the lover g¹ so as to overcome
the spring e¹ and raise the catch d¹, Fig: 3, out of the rack, which then
moves forward the length of a tooth by means of the weight f¹ and is

page_text: Signed, sealed, and delivered by the
before-named William Bowker, in the
presence of
G. SEPTIMUS Hugues,
Patent Agent,
Manchester.
Wч. BOWKER. (L.S.)