Machine for Boring Brush Boards.
Year: 1895

page_text: Date of Application, 30th Mar., 1895-Accepted, 25th Jan, 1896
Machine for Boring Brush Boards.
I, JOHANN BODEK, Engineer, a subject of the King of Prussia and resident of
Urban Strasse 78, Berlin Germany, do hereby declare the nature of my invention
and in what manner the same is performed to be particularly described and
ascertained in and by the following statement:-
The present invention relates to a machine for drilling brush boards and consists
of the details of construction hereinafter set forth, and particularly pointed out in
the claims hereunto appended.
°
And in order to make the present Specification more easily intelligible reference
is had to the accompanying drawing:
Fig. 1 being a vertical section through the centre of a machine constructed
according to my invention.
1 is the bed plate of the machine supported on five columns 2 and having mounted
thereon a standard 3 carrying two vertically guided sliding blocks 4 which are
operated up and down by four vertical screw spindles 5. These latter being
rotated by means of bevels 6 and 7 and spindle with hand wheel 8 and may be
arrested in any desired position by means of suitable ratchet gearing, not shown in
the drawing. The sliding block 4 carries a circular bearing 9 on which a circular
table 10 is mounted to rotate, being secured in position by a ring 11 and pins 12.
Near the rim of the table sleeves 14 are mounted revolubly in the same each
carrying at its lower end a gear 15 keyed thereon, the said gears all engaging in a
common driving wheel 16 mounted on the bearing 9 and being capable of rotation
by moving the said common driving wheel by means of the handle 17 on the same.
At the upper and lower ends of each sleeve 14 small vices are arranged on the
discs 18 having suitable ears in which a rotary screw spindle 20 having right and
left hand threads and handwheel 21 is mounted and adapted to close and open two
clamping cheeks 19 suitably guided along the said spindle. These clamps are for
clamping and working cylindrically shaped brush boards. Two lugs 22 are cast
onto the circumferential rim of the said circular table, each pair supporting a
horizontal spindle 23 also having right and left hand threads and adapted to operate
clamping cheeks between which brush boards may be vertically clamped, which it
is not required to turn. A number of drill carrying standards 25, being formed
with a curve at the top and consisting each of two pairs of arms or rails 26, each
pair enclosing a slot 26ª are provided adjustably mounted on the bed 1. The drills
are mounted on a plate 27 adjustable on the standards 25 at one side by means of
a screw 28 and tooth shaped plate 31, which may be clamped against the teeth of
the standard by means of the said screw which has a nut at the opposite side of the
said standard, said screw extending through the slot 26 of the standard, and at the
other side by a similar arrangement, of plate 30 which is however horizontally
adjustably mounted in a slot 29 of said plate 27. Three small bearings 32 are
mounted on the plates 27 which carry the drill holders 33 and below these the
screw spindles 34, the latter serving when rotated to advance or retract the drills
towards or from the brush board, as hereinafter more particularly described.
The foot of each standard 25 is provided with slots a a' and the circular path 35
of the bed 1 has annular grooves 37 and the slots of the standards are connected to
the said grooves of the bed by means of bolts 38, so that the said standards may
be moved either round the bed or radially on the same a certain distance by means
of their slots a a¹. The rear end of each drill spindle is squared and adapted to

page_text: One
slide in a correspondingly shaped sleeve having circular exterior and being mounte
in the two rear bearings 32 revolubly. A carrier 39 attached to the drill spindle
is adapted to slide on the screw spindle 34 when the latter is turned and thus to
actuate the drill spindle backwards and forwards with regard to the brush board.
The drill spindles are rotated from the main driving drum 40 by means of endless
bands, the said drum being mounted on the central driving shaft c supported in
bearings 41 of the machine frame. On the said shaft below the driving drun are
arranged fast and loose driving pulleys 42. The driving drum must be capable of
carrying as many endless bands as there are standards 25 to the machine.
side of the endless band 43 passes from the drum 40 to the guide roll 44 thence to
the roll 45 and then downwards to the tightening roll 46, the other side of the
endless band passes round the larger roll which is carried by the same spindle as
roll 45, thence to the roll carried by the rear bearing of the drill spindle, round
the spindle roll, and thence to the corresponding roll of the next drilling device
above it on the same standard, and so on until it has reached the top drilling device.
which is provided with an extra roll 47", over which the band passes, then over 47
back round the tightening roll 46 over 45, then over 44 and back to the drum 40.
The main driving shaft c carries at the top a second driving pulley 48, driving by
means of suitable belt a fast and loose pulley 49 and 49ª mounted on a stub shaft 50
carried in bearings 51 of the bed, and below this driving pulley on the main shaft
is a sleeve 52 in bearings 53, carrying at the top a gear wheel 54, engaging in a
rack 55 guided horizontally and having each end connected to. a disc 64 mounted
on each of the stub shafts 50, by which means said rack 55 will be actuated
backwards and forwards when the stub shafts are rotated, thus turning the sleeve 52
and the drum 52" fast thereon, backwards and forwards. The connecting rods 56
which connect the ends of the rack 55 to their respective discs are attached to the
said dises by suitable pins 67 adjustable in holes 66 of the said rods and discs.
The tightening rolls 46 and 46 for the bands are mounted on internally threaded
sleeves adapted to slide up and down on vertical screw spindles d d carried on the
backwardly projecting foot of the standards 25 and the positions of the said rolls
may be varied by turning the said spindles by means of the hand wheels f.
In order to enable a rapid fixture of the boards in equal numbers in the vices of
the sleeves 14 and in the clamps 23 of the circumference of the circular table, an
adjustable table 60 is provided mounted on a rod 61 having its foot engaging on a
spindle 62 mounted in the bed 1 of the machine and capable of being turned to
raise or lower the said table at will.
The machine operates in the following manner :-
Presuming brush boards for shoe blacking brushes are to be drilled and to
receive six rows each comprising 15 holes so that each board is to receive 90 holes
and that in the length of the board it is only possible to get 5 drills on each drill
standard 25, then it will be necessary to have three standards for each row or
eighteen standards carrying each 5 drills in order to drill the whole board. The
workman stands opposite the table 60,-no drill standards being arranged here-
and adjusts the table 60 so that the boards will be clamped in the vices on the
circumference of the table 10 at the middle. Eighteen drilled boards. are now
used as templets and fixed in the clamps and then the five drills of the first standard
are adjusted to correspond with the first five holes of the first row of the templets.
The drills of the second standard are then adjusted to correspond to the second five
holes of the first row and those of the third standard to the last five holes and so
on until all eighteen standards each have their drills corresponding to different sets
of five holes each.
A number of bands are carried by the drum 52ª which correspond to the number
of standards said bands being arranged on each standard in a similar manner to
that described with regard to the bands 42 with the distinction that these bands.
are intended to pass round the rolls of the screw spindles 34 of each drill. Thus
when the drum 52° is rotated backwards and forwards by means of the rack 55 and
mechanism described in connection therewith, the drills will all be advanced a certain

page_text: distance into the boards and automatically retracted when the direction of the-
spindles 34 is reversed. As will be evident the connecting rols 56 are adjusted o.
the discs 64 so as to give the drills their proper advance and retirement previous.
to starting the machine.
As soon as the drills have all been adjusted the templet boards are removed and
a board is clamped in position for the drills of the first standard and the machine
set in motion. Whilst the first five drills are drilling the first board a second may
be attached in the clamps of the circumference of the table 10 so that on turning.
the first board to the drills of the second standard,. the second board will
simultaneously come before the drills of the first standard and so forth.
The standards of the drills may be moved on the bed by means of gears i
having handles and mounted one on each standard 25 and engaging in a rack g
of the bed 1. The table 10 may also be turned into any desired position by means
of the connections n no o bevel-wheels m m and hand wheels scale disc r with
pointer being provided to show the position of said table.
Having now particularly described and ascertained the nature of my said.
invention and in what manner the same is performed I declare that what I.
claim is :-
I. A machine for drilling brush boards, consisting of a series of vertical standards,.
curved at their upper ends, a bed on which said standards are radially and circularly
adjustable, a series of vertically and radially adjustable drill carrying plates on each.
of said standards, drills mounted on said plates and capable of longitudinal and
rotary movement in their bearings, a central circular table to carry the brush boards.
and means to rotate and simultaneously advance and retire said drills towards anl
from the boards, substantially as described.
2. The combination of a series of standards 25 adjustable as specified, a series of
adjustable drill holders 33 on said standards, a vertically adjustable table 10, having
clamps 23 on its circumference and upper and lower rotary clamps 19 near its.
circumference, means to rotate said rotary clamps all simultaneously and equally,
and means to rotate and advance and retire said drill spindles in the manner and
for the purpose substantially as described.
3. The combination of a series of standards 25 adjustable as specified, each having
a series of adjustable drill holding plates 27, drill holding spindles mounted one on
each said plate, and a screw spindle 34 mounted beneath said drill spindle and
coupled to the latter, means to rotate said screw spindle backwards and forwards
alternately, an adjustable circular table mounted in the centre of said series of
standards, and means for rotating said drill spindles substantially as described.
4. The combination of a series of standards 25 adjustable as specified, a circular
table to carry blanks also adjustable vertically and mounted in the centre of the
said series of standards, a driving shaft concentric and below said table, a drum 52ª
mounted on a sleeve loose on said driving shaft, a gear 54 on said sleeve a rack 55
to engage said gear, continuous rotary fast and loose pulleys 49 49ª, mounted on
stub shaft in proximity to said driving shaft, and driven from said driving shaft
and adjustable connecting rods 56 from the ends of said rack to the crank pins of
said stub shafts and means for connecting said drum 52ª to the drill advancing and
retiring mechanism substantially as described.
5. The combination of a series of standards 25 adjustable as specified, a series of
drill carrying plates 27 adjustable thereon, drill spindles mounted on said plates,.
driving rolls for the driving band mounted on said drill spindles, having intermediate
sleeves, and guide rolls mounted on said plates for the band, a driving pulley fast
on a centrally mounted driving shaft and having band grooves corresponding in
number to the number of standards 3, and bands from said driving pulley round
the driving rolls and guide rolls of each drilling device of each one and the same.
standard and means for tightening said bands in the manner and for the purpose
substantially as described.
6. The combination of a series of standards 25 adjustable as specified, a central

page_text: rotary and adjustable table, having peripherial clamps thereon and upper and lower
clamping devices around it near the rim, a series of drill holders mounted
adjustably on said standards, carrying drill spindles 33, means to rotate said
spindles and to advance and retire same as specified, driving bands to effect this
object and means to tighten said bands, consisting of screw spindles d attached to
the foot of each standard laterally guided sleeves on said spindles and guide rolls
on said sleeves for the bands and means to rotate said spindles substantially as
described.
Dated this 30th day of March 1895
HORN, SON & Co.,
Agents for the Applicant.