Machine for Boring Brush or Broom Heads.
Year: 1893

page_text: e of Application, 12th Sept., 1893-Accepted, 21st Oct., 1893
COMPLETE SPECIFICATION.
Machine for Boring Brush or Broom Heads.
I, FRIEDERICH Wilhelm FedDERN of Bergedorf near Hamburg, in the
German Empire, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
In the manufacture of brushes and brooms it is usual to bore the holes in the
heads or backs one after another singly in order to give to each of the tufts a
different inclination. This makes the work expensive and takes up much time.
The object of the invention is to provide a machine by which these disadvantages
are remedied inasmuch as all the holes are bored simultaneously and at one operation
in the direction desired for each of the tufts.
In the drawing
Figs. 1 and 2 are respectively a vertical and a horizontal section taken through
the machine of this invention.
Fig. 3 is a sectional view of the mechanism for fixing the brush head to be
bored and
Fig. 4 shews another arrangement for displacing or adjusting the boring spindles.
a is a frame in which are mounted rollers c. These are driveu from shaft d
through band pulley r roller and bands 62. e are the boring spindles in which
the boring tools e' are carried, said spindles being mounted in frame a and driven
from rollers c by bands passing over pullies which are all of a like diameter and as
rollers c are also all of the same diameter. it follows that all the boring spindles are
rotated at the same velocity. p, (Fig. 2) is a hand wheel by turning which the
boring spindles may be adjusted to any desired inclination and distance apart. It
is fixed on a screw spindler carried in screwed support 7 and in connection at the
opposite end with transmission levers s. These by joints u are in connection with
rods t which engage the ends of the boring spindles and displace the boring spindles
when the hand wheel is turned.
In the mechanism shewn in Fig. 4 the boring spindles are displaced or adjusted
from the back ends of the same by operating a lever in connection with a series of
levers.
The head B to be bored is with the aid of an adjustable support g placed, at the
proper height relatively to the boring spindles, on the plate h of slide k operated by
screw spindle i. Laterally the head is held by jaws both actuated by a single
right and left handed screwed spindle m lield by means of screws at its plain middle
part in a sleeve n which is kept in position by a bar o engaging in groove n¹ (Fig. 3)
of the sleeve.
When the head has been fixed it is moved forward by means of screw spindle i
against the rotating boring tools e' to be suitably bored.
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 :-
A machine for boring brush or broom heads consisting in the combination of the
requisite number of displaceable boring spindles suitably arranged relatively to one
another and driven from a common band pulley or roller & through band rollers c
all of the same diameter in such manner that all the boring tools have the same

page_text: rotary velocity and bore all the holes in the head at one operation when the head is
moved against the boring tools, substantially as described and shewn.
Dated this 12th day of September 1893.
THOMAS R. SHILLITO,
89, Chancery Lane, London, W.C., Agent for the Applicant.