Improvements in the Work Holders of Machines for Drilling Brush Backs, and Setting the Bristles therein.
Year: 1896

page_text: Date of Application, 7th Aug., 1896-Accepted, 19th Sept., 1896
COMPLETE SPECIFICATION.
Improvements in the Work Holders of Machines for Drilling Brush
Backs, and Setting the Bristles therein.
I, CARL EDUARD FLEMMING, of Schoenheide, Germany, Brush 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 :-
This invention relates to machines for drilling the backs of brushes and inserting
the bristles, and in which the work tables for the drilling and inserting apparatus,
or the devices for operating said tables, are connected together in a positive or
constrained manner, and this invention relates to an arrangement in such machines,
which has for its object to effect the connection between the operating mechanism
and the work tables, and to cause the latter to make the movements (prescribed by
means of curved guides) in the longitudinal and transverse directions of the brush
bodies resting upon the tables.
The accompanying drawings illustrate a machine for drilling and setting bristles
in brush bodies, fitted with the new arrangement.
Figure 1 is a side elevation of a complete machine. Figure 2 is a plan of the
under part. Figure 3 is a front elevation, Figure 4 is a side levation.
Figure 5 is a longitudinal section shewing the slotted guide employed in the
machine ;
Figures 6 and 7.shew slide blocks for working in slotted guides.
Figure 8 is a front elevation of the cam disc that causes the movements of the
work tables;
Figure 9 is a side elevation of the same; Figure 10 is a plan thereof.
Figures 3 to 10 inclusive being drawn to enlarged scales.
Of the work tables a, one receives the brush back to be drilled and the other
receives the drilled back in which the bristles are to be set. These two tables are
exactly alike, fixed by screws to two inverted L pieces b (Figure 3). Their
vertical limbs c can slide in guides d which are fixed by pivot screws e on which
they can turn, to a main guide piece f.
Thus the work table a can be raised or lowered, and also can rock about the
pivot screwe e. The limbs c have holes at their lower ends c¹ through which pass
screws 9 carrying rollers which are guided in slots k of plates i.
The plates i are fixed by screws to the guide piece f (Figure 4), and can be
removed so that the brush back of any desired form can be placed in regard to the
direction of its width, in accurate and uniform contact with the drilling and
bristle-setting tools. Thus it is only necessary to insert a pair of plates i the slots
of which correspond exactly with the curvature of the brush back, to allow of a
straight or a curved movement or both combined in the direction of the width of
the brush back..
The main guide piece f which supports the work table is a hollow casting of
square form in cross section and suitable length fitted to slide in a guide block m
which can turn about a pivot bolt l.
Thus the work table a with the main guide piece f can be raised and lowered in
the guide m, and can also rock to right or left on the pivot bolt 1.

page_text: The main guide piece fis provided at its lower part f" with a screw o in the
same manner as the L pieces b.
Upon this screw o is mounted a roller which is guided in a guide slot g of a
plate p. The plates p, of which there is one for each main guide piece f, can
be removed and other plates can be fixed on the side plater to suit different
forms of the brush backs in the direction of the length of the latter. The
plater corresponds to the width of the machine, or to distance apart of the work
tables.
The two guide blocks m are also fixed by screws on the side plate r on which
they can be vertically adjusted.
The side plate ris. fixed by two screws S to the frames of the machine and
is capable of vertical adjustment, so that brush backs of different thicknesses
can be placed upon the work table underneath the drilling and bristle setting tools.
This adjustment is effected by loosening the two screws S, and moving the work
tables a, or the main guide pieces f to the required height by means of an adjusting
screw spindle S¹.
The automatic movement of the work tables a of the main guide pieces f, is
effected in the following manner :-
In the main guide piece fis fitted a horizontally sliding piece 2 at a suitable
distance below the work table a; it can be moved backwards and forwards, is
bored through, and pivotted on a bolt 3 on which it is held by a nut 4. Above
the bolt 3 is fitted in a groove 5, a slide block 6 pivotted on a bolt (Figure 7)
and above this is fitted another similar slide block 6 also pivotted on a bolt.
Over both the slide blocks 6 and 6' is slipped a slotted slide frame 6° the upper
face 6 of whicb, is, fixed by screws up to the work table a, and fits into the
groove 5 of the slide piece 2. The bolt 3 of the sliding piece 2 has its near
shank 3ª fitted in a sliding piece (Figure 4) which is adapted to slide
vertically on an angle bracket w, fixed on the upper face of a double slide rest, its
upper part d d being movable along with the bracket w in the direction of the
length of the brush back, and its lower part d d being movable, together with the
upper part in the direction of the width of the brush back. The upper part d d
has on its under side a toothed rack gearing with a toothed wheel e, on a shaft u
which is mounted at both its ends in bearings u¹ (Figure 2) in the frame s.
shaft u carries at its other end another toothed wheel gearing with a vertically
sliding rack y, having near its lower end a screw y' which carries a roller guided in
the cam groove of a disc t. This disc is moved onward one tooth by a pawl t¹ at
each revolution of the machine.
The
The cam groove moves the roller y' thus moving the rack y, which driving the
toothed wheel 2 causes rotation of the shaft u with the toothed wheel ', and thus
gives motion to the slide rest part d d to the right or to the left according to the
motion given by the cam groove in t to the roller y. By the movement of the
upper part d of the slide rest, the work table a has the prescribed motion
imparted to lengthwise of the brush back. The movement of the work table a
transversely that is in the direction of the width of the brush back, is also effected
by the cam disc t, which has for this purpose another cam groove on its opposite
side. In this groove is guided a roller on a screw y2, in a horizontal slide v
(Figures 2 and 10). To the slide is fixed a rod a the other end of which is
fixed to the lower part d d¹ of the slide rest which thus receives movement from
the second cam groove in t slide v and rod a thus giving transverse movement to
the slide frame and work table a.
A spring in a box f supports partly the weight of the main guide piece and of
the work table a so that the roller which is guided in the slot of p being relieved
of pressure, can work more easily (Figure 4).
The other parts of the machine shewn at Figure 1 which actuate the drilling
and bristle setting tools &c. do not form part of the present invention and therefore
do not require to be farther described.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I.
claim is :-
1. A machine for drilling and setting the bristles in brush bodies, in which the
work tables for the drilling and bristle setting devices, or the driving gear for
these tables, are positively connected together, and the pivots of the work tables in
their supporting frames, and also the latter themselves, are arranged so as to be
vertically movable, characterized by the arrangement of a vertically movable
guide carriage (f) which is also capable of rotation about a horizontal axis, and
which is provided with a guide slot k, in which is guided the pin g of the supporting.
frame 6 for the work tables, and which itself is guided by means of a pin o in a
slotted plate p, so that when the supporting frame of the work tables is actuated by
means of a double slide rest (d d and d d¹) in one or the other direction, the work
tables are compelled to execute the movements in the longitudinal and transverse
directions (determined by the two curved grooves in the carriage fand plate p) of
the brush back resting thereon, substantially as described.
2. A form of construction of the machine specified in Claim 1, in which the
guide carriage f is provided with a slotted plate i, which can be replaced, its pin o
being guided in slotted plate p also capable of being replaced, so that the brush
bodies of any desired shape, convex, or concave, can be drilled and set with bristles,.
substantially as described.
3. A form of construction of the machine specified in Claims 1 and 2, in which
the grooved plate p is attached to vertically adjustable plate r, with the object of
enabling brush bodies of any desired thickness to be placed on the work tables.
under the drilling and bristle-setting tools substantially as described.
4. A form of construction of the machine specified in Claims 1 to 3, in which on
the guide block m in which the guide carriage fis mounted, there is provided a
spring box, the compression spring and spring bolt of which have for object to.
counterbalance the pressure exerted by the work table and the guide carriage upon
the guide bolt o, and thus to produce a more easy working, of the machine,.
substantially as described.
Dated this 7th day of August. 1896.
ABEL & IMKAY,
Agents for the Applicant.