Improvements in Machines for Boring Brush-boards and similar Articles.
Year: 1897

page_text: Date of Application, 25th Oct., 1897
Complete Specification Left, 25th July, 1898-Accepted, 8th Oct.,
1898
PROVISIONAL SPECIFICATION.
Improvements in Machines for Boring Brush-boards and similar
Articles.
I, GUSTAV ADOLF GUSSMANN, of Lorrach, Grand Duchy of Baden, Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:--
The present invention consists of a machine for boring brushboards and similar
articles in connection with which it is required to bore a number of holes simul-
taneously.
The invention comprises a series of horizontally mounted spindles which are all
driven from a suitable source of power by means of cord pulleys, chain gearing
or gear wheels as may be desired. These spindles are coupled to a series of bore
or drill spindles, advantageously inclined towards the board to be drilled, by means
of intermediate shafts connected at one end by means of universal joints to the
said horizontal spindles and at the other end also by means of universal joints to
the drill or boring spindles. The latter set of spindles is guided by suitable guide
plates, which are interchangeable and may be exchanged for various kinds of work.
The whole set of horizontal spindles are mounted in suitable bearing walls and
may be advances when requisite towards the board to be bored and after having
performed the operation of boring they will be retracted.
The backward and forward motion of the set of spindles is effected by a cam
and lever said cam being keyed to the main driving shaft which is mounted in
suitable bearings underneath the table. The blanks are fed to the machine from
a hopper having underneath its outlet a regulating roller and a pair of clamping
arms, also operated from the main driving shaft to intermittently open and close,
their closing movement being effected each time a blank is allowed to pass the
roll, coming from the hopper. Below these clutches or grippers is mounted the
plate on which the blank is secured during the boring operation. This plate is
also provided with two grippers which may be intermittently opened and closed
by suitable mechanism operated by the main driving shaft. This plate is capable
of reciprocation forwards towards the drills and backwards from the same, said
plate being mounted to slide in suitable guides.
The operation of the machine takes place in the following manner:
The blank is firmly gripped by the grippers on the reciprocating holder and the
drills are all advanced simultaneously and bore or drill the said blank. During this
operation the next blank in the hopper is resting on the grippers, which are
rotably mounted above the holder plate and the transport roll turns against the
said blank without, however being able to pass the same downwardly. After the
drills have performed their work they retire and the plate with the drilled blank
still firmly fixed or clamped thereon, advances towards the drills.
At this moment the grippers of the holder plate are released and the drilled board
falls out underneath the machine. Suitable lever mechanism operated from the
main driving shaft of the machine is employed to work the grippers and release
the same at the required moment.
As soon as the finished blank has been dropped by the holder plate, the latter
again recedes and catches the next blank which has in the mean time been gripped

page_text: by the upper grippers and moved downwardly by these and the action of the
transporting roll.
At this period the drills or boring tools again advance and bore the board after
which they recede and the holder advances dropping the finished board as pre-
viously described and again retiring to catch another board.
Any suitable mechanism may be employed to operate the pairs of grippers but for
the holder plate, grippers are advantageously employed, which are mounted on a
spindle having right and left hand threads, said spindle being alternately rotated
in opposite directions and thus causing the grippers to advance and recede towards
and from each other. The feed grippers which are mounted above the holder plate
may consist of cams mounted on suitable spindles and rotated either continuously
or intermittently, in the former case they should be timed to come round and
grip the next blank at the moment the same is to be delivered to the holder plate
grippers, whilst in the latter case the grippers must be intermittently operated
to transport the blank at the proper moment.
Dated this 25th day of October 1897
CASTLE SMITH,
nvention" Office, Mitre Court, Fleet Street, London, E.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machines for Boring Brush-boards and similar
Articles.
I, GUSTAV ADOLF GUSSMANN, of Lorrach, Grand Duchy of Baden, Germany,
Manufacturer, 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; -
The present invention relates to a machine for boring brushboards and similar
articles and consists in the details of construction hereinafter described and
particularly pointed out in the claim.
And in order to render the present specification more easily intelligible, refer-
ence is had to the accompanying drawings in which similar letters of reference
denote similar parts throughout the several views:-
Fig. 1 is an end elevation of the machine.
Fig. 2 a side elevation.
Fig. 3 a part plan.
Fig. 4 an elevation of the brush board feed device.
Fig. 5 a vertical section on the centre line Fig. 4.
Fig. 6 a section on line 6-6 Fig. 4.
Fig. 7 a section on line 7-7 Fig. 4, and
Fig. 8 a detail elevation and sectional elevation of the connecting rods of the
spindles and drills.
The machine consists of a series of spindles e mounted in suitable frames f and
having driving cord or chain pulleys, and a series of drill spindles a, a, set at a
certain angle towards each other and connected to the driving spindles e by means
of intermediate connecting rods d and universal joints c, c, at each end of same,
said universal joints being formed by hinges at each end of said connecting rods d
The angle of the drills to each other may be determined by guide stands b, b,
for the drill spindles, which stands or guides may be interchangeably mounted
on the base plate of the machine. A series of driving rolls g, g, are provided at the
ends of the driving spindle frames and connected by driving cords with a number
of the said spindles e, e, as shewn in Fig. 1. Driving rolls h are mounted on the

page_text: spindles of the rolls g and intermediate rolls i, i, serve to connect all the rolls h, h,
by means of a cord with driving gear on the ceiling or other suitable driving
means. The frame is movable longitudinally of the bed and operated by means
of a pivoted lever k and a cam disc m, mounted on the main driving shaft / of
the machine, said shaft being driven by fast and loose pulleys in any desired
manner. The brushboard blanks are delivered to the machine from the hopper s
beneath which a roll & rotates, being driven by means of conical gearing w (Fig. 4)
which is geared to the driving shaft by means of sets of bevel gears and suitable
shafting in any convenient manner. Below the roll t, which of itself is not capable
of letting the blanks pass to the machine, are provided two claws or grippers u, u
(Figs. 4 and 6) which are rotated by means of gears u¹, u², u³, u¹ and bevel gear-
ing v, 3, and shaft and at each rotation grip the sides of the blank and pull
it down past the roll t. The above mentioned parts are mounted on a vertically
adjustable holder o, which together with the whole may be adjusted on the
standard n, the vertical shafts of the bevel gearing v and w being provided with
keyways and feathers for the purpose.
The blank falls from the hoppers on to the upwardly extending edge of a slide p
adapted by means of lever mechanism r, r¹ and to be reciprocated to and from
the back of the holder o, i, e, to or from the drills. Below the grippers u, u, are
mounted two laterally movable grippers x, x, (Fig. 7) mounted on a horizontal
screw spindle y having oppositely cut threads so as to reciprocate the said grippers
to and from each other when turned. This spindle is turned backwards and for-
wards by means of gears z, one of which, the larger (Fig. 2) is partially rotated
or rocked by means of a lever system 21, 22 from the main driving shaft. The disc q
of the main driving shaft serves to reciprocate the slide p.
The various parts of the machine are timed to operate in the following
manner:
A blank is gripped by the claws u, u and pulled down on top through or behind
the roll t, which rotates against the lower edge of the next blank without letting
it pass. The clamps a, a now advance and grip the blank after it has been released
by the claws, and the spindles are simultaneously advanced by the advance of the
whole frame through the action of the lever k and cam m. The blank having
been bored, the drills are withdrawn and the support p is moved forward, the
clamps a, a, being simultaneously released and the bored blank now falls down
underneath the machine behind the withdrawn support p. The latter now returns
and by this time the claws u, u, have performed one rotation and grip the next
blank when the series of operations is repeated.
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:-
Machine for drilling or boring brushboards and similar articles according to
which the blanks are separately delivered to or in front of the drills from the
hoppers, by means of the roll and claws u, u, said blanks being successively sup-
ported by the slide p and clamped by the clamps, in the proper position to be
drilled and being subsequently released by the clamps and allowed to fall down-
wardly, by the removal of the support 2, all operations taking place automatically
in the manner and for the purpose substantially as described.
CASTLE SMITH,
Invention" Office, Mitre Court, Fleet Street, London, E.C.,
Agent for the Applicant.