Improvements in Machines for Boring Long Holes Endwise or Crosswise through or into Thin Wood.
Year: 1889

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Boring Long Holes Endwise or
Crosswise through or into Thin Wood.
JABEZ NALL of the Spring Vale Saw Mills Penisione in the County of York
Case 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 improvements in machines for boring long holes endwise or
crosswise through or into thin wood, that is to say for instance such as wood or board's
used for forming the sides, ends, bottoms, or lids of van boxes or packing cases, or other
like thin pieces of wood commonly so understood and endwise or crosswise through or
into which it is required to form suitable long holes. Hitherto it has been found very
difficult to bore long or deep holes end wise or crosswise into or through thin wood on
account of the vibration of the necessarily long spindle or bit required for the purpose,
the vibration preventing the hole being bored accurately, the object of my present
invention is therefore to overcome this defect and to construct and arrange a machine
which will expeditiously, and without difficulty accurately bore holes through or into
thin wood endwise or crosswise, to attain which I construct my improved machine in
the manner set forth in the accompanying drawings in which Fig. 1 is a longitudinal
elevation, Fig. 2 a cross sectional elevation taken on line a, a, of fig. 1, Fig. 3 also a
cross sectional elevation but taken on line b, b, of fig. 1, and fig. 4 is a plan of a
machine constructed according to my present improvements. Similar letters or
characters of reference designate like parts in each view.
Upon a suitable table or bench A I secure by means of bolts or screws al a bed B,
which has oblong holes formed through it, and upon its face are formed suitable
channels or grooves, which are preferably of a V shape in cross section see fig. 1.
Upon the bed B Larrange and fix by means of screws D which pass through the oblong
holes any required number of head-stocks (which may be adjusted as to distance
apart from time to time by simply unscrewing the bolts D and then sliding the head-
stocks to positions required.
Each head-stock supports or carries a horizontal shaft E upon two bearings e²
which are arranged a suitable distance apart so that a fast pulley F and a loose
pulley G may work with or upon the shaft E. An ordinary belt motion H is fitted
to each head-stock C, by which means a suitable driving belt I may be passed from
one pulley to the other as desired in the usual way. Each shaft E extends a little
beyond the bearings and has each of its ends arranged to receive the ends j¹ of
the spindles J which have the boring bits either made with or attached to them.
At each end of the frame A 1 arrange a table K which by means of a rebated
portion is free to slide upon the frame A in a direction towards as well as away
from the head-stocks C. Each table K has formed across its face at right angles to
the boring bits two suitable grooves and which are of a dovetail shape in
cross section. The grooves receive the heads of suitable bolts which pass
through the feet m' of the carriers M and secure the same upon the table K by
means of nuts as shown. Each carrier M is arranged to carry or bear a portion
of each spindle J which has either made with or attached to it the boring bit
which means the same is effectually prevented vibrating. The grooves & receive
suitably formed projections which are formed upon the stops or guides O. The said
guides O have their ends of bent to form shown at fig. 1 so that the same may press
against the back portions or edges of the thin wood during the time the long holes
are being bored.
by
The outer end of each table K has either made with or secured to it a landle A³
by which it may be pressed forwards or pulled backwards conveniently by the hand
of the person using the machine.

page_text: In order to drill a long or deep hole through or into the thin wood W, it is first
placed upon the table K in the position shown at the left hand portion of fig. 1, that
is with its back portion or edge pressing against the parts o¹ of the stops or guides O.
When the wood is in said position the carriers M support the spindles J close up to
the boring bits as shown. The belts I are then by means of the belt motions H
thrown upon the fast pullies F by which means the boring bits are revolved at
the necessary speed; the thin wood W is now pressed down by the hand of the person
operating so that it is prevented lifting out of place, and simultaneously the table K
is forced forwards by pressing the other hand against the handle 2, this operation
causes the bits to enter the thin wood W in the manner shown on the right hand
portion of fig. 1. After the bits have entered some distance, the wood W together
with the table K is drawn back in order that the displaced wood within the bored
hole may be discharged therefrom, after which the wood W may be again fed up to the
bits and in like manner withdrawn and so on until the holes are drilled the required
length or entirely through the wood W.
In the drawings annexed 1 illustrate two operating tables K. by which means two
persons may work the machine at the same time.
It will be obvious that any number of boring bits 12 more than two may be
arranged to work and bore a corresponding number of holes into or through the
wood W in the manner set forth it only being necessary to increase the number of
head-stocks C and carriers M accordingly.
By means of the tables K and carriers M being arranged as described and the thin
wood being operated upon in the manner specified, long holes may be accurately bored
endwise or crosswise through or into thin wood with expedition and ease.
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. In machines for boring holes crosswise or end wise through or into thin wood the
use of a movable or travelling carrier M used for supporting or steadying the spindle J
and bit during the boring of the hole substantially as described and illustrated in
the drawings annexed.
2. In machines for boring holes crosswise or endwise through or into thin wood
the combination of a table K with carriers M employed for steadying boring bits jä
substantially as described, and set forth on the drawings annexed.
3. A machine combined and arranged substantially as described and used for the
purpose specified.
Dotad this 52.1 da
1
1000
H. F. BOUGHTON, M.I.M.E.,
Barnsley.