Improvements in Machines for Boring Wood.
Year: 1897

page_text: Improvements in Machines for Boring Wood.
I, JOSHUA HODGKINSON, of 96, Broughton Lane, Manchester, Manager, do hereby
declare the nature of my said invention to be as follows:-
My invention has reference to a compound multiple boring machine for boring
at one operation the dowel' holes in say the two faces of a table leg, and which
machine is to be also used for boring the corresponding dowel holes in the rail.'.
The essential feature of my invention consists of two carriages having respectively
a horizontal and vertical movement, each carriage working in guides in a suitable
construction of main framing, and each carriage having (by preference) four boring
spindles geared together and receiving motion through straps from two lay shafts
under the main frame. A table with rising and falling motion is arranged in
relation to the boring spindles before mentioned in such manner that when say,
a table leg is cramped down thereon, for the purpose of boring the dowel holes
the vertical spindles and boring tools operate on the under face of the object by
raising the carriage (which is provided for that purpose with a foot treadle motion),
whilst by drawing forward the horizontal carriage and boring tools (by a suitably
arranged hand motion) the side or right angled face is operated upon.
Thus the eight dowel holes are bored at one operation, and with exact uni-
formity and a very great saving of time is effected.
Suitable stops are arranged in connection with the motion work of each carriage
to limit the movement, and the consequent depth of boring.
The rails are bored on the same machine by using the horizontal carriage
only, and with like expedition, whilst as the holes in the rail correspond with
the holes in the leg, exact uniformity is ensured and expeditious and good work.
Obviously this machine can be used with advantage on other descriptions of
joinery involving boring or dowelling, and with very great advantage on work
requiring holes boring at right angles to each other.
Dated this 19th day of June 1897
JOSHUA HODGKINSON,
By John G. Wilson & Co.,
Agents.
I, JOSHUA HODGKINSON, of 96, Broughton Lane, Manchester, Manager, do hereby
declare the nature of this invention and in what manner the same is to be performed,
5 to be particularly described and ascertained in and by the following statement:-
My invention has reference to a compound multiple boring machine for boring
[Price 8d1

page_text: at one operation the 'dowel' holes in say the two faces of a table leg, and the
corresponding 'dowel' holes in the 'rail."
The essential feature of my invention consists of two carriages having respectively
a horizontal and vertical movement, each carriage working in guides in a suitable
construction of main framing, and each carriage having (by preference) four boring
spindles geared together and receiving motion through straps from two lay shafts
under the main frame. A table with rising and falling motion is arranged in
relation to the boring spindles before mentioned in such a manner that when say,
a table leg is cramped down thereon for the purpose of boring the dowel' holes
the vertical spindles and boring tools operate on the under face of the object by
raising the carriage (which is provided for that purpose with a foot treadle motion)
whilst by drawing forward the horizontal carriage and boring tools (by a suitably
arranged hand motion) the side or right angled face is operated upon.
Thus the eight dowel "holes are bored at one operation, and with exact uni-
formity and a very great saving of time is effected.
And in order that my said invention may be more readily understood and carried
into practical effect I have hereunto annexed a sheet of drawings and will now
proceed to describe the same with the various figures and letters of reference marked
thereon.
Fig 1 is a side elevation, and Fig. 2 a (part) plan of my said compound multiple
boring machine. Fig. 3 is a front view of the vertical set and an end view of the
horizontal set of boring tools and spindles.
Figs. 4 & 5 represent details.
In accordance with my invention (A) designates the horizontal set of boring
spindles and tools, and (B) the vertical set of boring spindles and tools. Set (A)
is mounted in carriage (C) which is capable of moving horizontally in fixed
slides (D) under the pull of hand rod (E). Set (B) is mounted in carriage (F)
capable of moving vertically in fixed slides (G) under the movements of foot-
lever (H).
'
The set of spindles (A) is rotated by strap (I) from pulley (J) on side or lay
shaft (K). The set (B) is rotated by strap (L) from pulley (M). Said pulleys (M)
and (J) each receive motion from the driving shaft (N) which is fitted with fast
pulley (0), and loose pulley (P).
The several boring spindles receive motion through toothed wheels (Q) from
wheels (R) (R¹) carried by drums (S) beneath, or behind the said spindles, which
in the case of the horizontal tools receive motion by means of strap (I) from
pulleys (J) and which in the case of the vertical tools receive motion by strap (L)
from pulley (M).
Fig. 5 shews a transverse section of one, or other, of the sets of boring spindles
and the drums or axles (S) around which the driving straps (I) or (L) pass in
setting the spindles in motion. Two of the spindles gear by their respective
toothed wheels (Q) with a wheel (R) and the other two with wheel (R¹), and all
rotate in one direction (see Fig. 5). The strap which drives the vertical boring
tools is mounted as shewn in Fig. 4 being caused to travel over carrier pulleys (N¹)
in order to convey the motion of pulley (M) to drums (S).
The table leg or object to be bored is cramped on the table (T) which is capable
of rising or falling under the action of screw (U) to hold the table leg or rail in
proper relative position to the horizontal tools (A). The object to be bored is held
by swivel cramp (V).
T
The sets of tools can be worked simultaneously, or separately, i.e., both horizontal
and vertical holes be formed at one operation, or be formed one after the other.
For the purpose of affording a better driving of the respective drums I may
arrange the pulleys (J) and (M) on axis mounted in bearings away from the main
framing, but for compactness they are mounted on axes which are carried in the
framing. The shaft (K) receives motion from shaft (N) by bevil or mitre
wheels (W).
.
Beneath foot-lever (H) I provide the adjustable stop (X) which serves to limit

page_text: or determine, the movement of said lever and consequently the degree of boring.
A suitable stop may be applied to rod (E) or other suitable part, for limiting the
movement of the horizontal set of tools.
'
The rails are bored on the same machine by using the horizontal carriage
only, and with like expedition, whilst as the holes in the rail correspond with the
holes in the leg, exact uniformity and good work is assured.
Obviously this machine can be used with advantage on other descriptions of
joinery involving boring or dowelling, and with very great advantage on work
requiring holes boring at right angles to each other."
Having thus 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 compound multiple boring machine, consisting of two sets of boring
spindles and tools, working at right angles with each other, mounted in movable
carriages working in a main framing, and each set driven by suitable gearing
as set forth.
2: In a wood-boring machine, the combination of boring tools (A), (B), with
carriages (C) (F) and wheels (Q), (R) (R¹) drums (S), all as and for the purposes
set forth.
3: In a wood boring machine the combination and arrangement of tools
working at right angles, with a rising and falling table on which the object to
be bored may be fixed, as set forth.
JOSHUA HODGKINSON,
By John G. Wilson & Co.,
Agents.