Year: 1887

page_text: Date of Application, 16th Sept., 1887
Complete Left, 18th June, 1888
Complete Accepted, 27th July, 1888
I, ELLIS CUTLAN Everleigh House, Everleigh Street, Tollington Park, London, N.
Joinery Manufacturer do hereby declare the nature of this invention to be as
follows:-
My invention relates to a new & improved tool for spiral turning consisting of a
leading guide, a cutting tool, and a rubbing piece fitted to a suitable hinged frame..
The leading guide, which may be either fixed or in the form of a sharp edge roller,
is brought to bear on the article to be turned at an angle suitable for the desired spiral,
this angle is maintained by means of the adjustable rubbing piece in contact with the
opposite side of the article being operated on. This rubbing piece may be either plain
or fitted with anti-friction rollers. The cutting tool may be of any form suited to the
required spiral.
The above mentioned guide, cutter & rubbing piece are brought into action by
means of the frame which may be made to grip them directly on the work, or the
frame may be allowed to travel on a rest which would then operate as a fulcrum to
keep the guide & cutter in contact with the work.
Dated this 16th day of September 1887.

page_text: I ELLIS CUTLAN, of Everleigh House, Everleigh Street, Tollington Park, in the
County of Middlesex, Joinery 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 :-
My invention relates to tools for turning or cutting wood spirals, and it comprises
the improvements hereinafter described.
In the accompanying drawings
Figure 1 is a side elevation of a spiral turning tool constructed according to my
invention and adapted to turn a single spiral; and,
Figure 2 is a top view or plan of the same.
Figures 3 and 4 are views similar to Figures 1 and 2, respectively, illustrating -a
modified form of tool.
Figures 5 and 6 are side and plan views respectively of a tool adapted for turning a
spiral having two or more threads.
Similar letters of reference indicate corresponding parts in all the figures..
a is the frame of the tool, which comprises two handles b, c pivotted together at d
and having the arms or extensions e, f respectively, the latter being bifurcated.
g is a rubbing piece or guide which is pivotally carried upon the arm e and which
is adapted to he set at any angle, relatively to the longitudinal axis of the tool, by
means of the nut h. This guide is hollowed out on its upper side, as shewn in
Figure 1, to lie against the surface of the material in which the spiral groove is to
be formed. A roller is placed in the said guide in order to reduce the friction
between the guide and the wood as much as possible.
j is a roller which is mounted in the bifurcation of the arm so as to rotate, and
provided with a blade k forming a leading guide; is the cutting tool proper, herein-
after termed the cutter, the said cutter being arranged immediately behind the blade k,
and of a shape corresponding to the shape of the groove to be cut. This cutter is
rendered adjustable by a screw P. m is an auxiliary guide. The said roller k, in
conjunction with the guide g, maintains the cutter steady relatively to its work
notwithstanding the size of the cut; the said roller also serves to regulate the depth of
cnt made by the cutter.
n represents, in dotted lines, a piece of wood in which a groove is being cut, and o a
groove cut therein.
The operation of my invention is as follows, that is to say; the piece of wood in
which it is desired to cut a spiral groove is first smooth-turned to the desired size, as
shown at n, and placed between the lathe centres, and then the tool is placed thereon,
as shown, so that the work is located between the guide g and the roller j and leading
guidek, the guide g having been previously set, as hereinbefore described, to the
required angle. As the piece n rotates the tool is caused to travel, owing to the
blade & cutting into the wood at an angle to its axis, as shown; the cutter is also so

page_text: set that it cuts into the material as the tool travels, so that the spiral groove o is
formed, which can be enlarged to any desired extent. The auxiliary guide m is set to
follow in the groove o formed by the cutter to assist the travel of the tool.
In the modification of my invention shown in Figures 3 and 4, the tool is adapted
for cutting spirals on pieces n of varying diameters, the roller; being adjustable in the
armf, the latter being provided with a series of holes p into which the pin q carrying
the said leading guide can be inserted. In this modification the guide g, which
bears against the material being turned, is dispensed with, guides g¹, gl adapted to run
upon a bar r fixed parallel to the work being employed. These guides are mounted
on the arms e, f and provided with antifriction rollers i, i. The angular adjustment is
effected by fixing the position of the lower guide g₁ by means of the nut h.
In the modification of my invention shown in Figures 5 and 6 the construction is
substantially the same as that shown in Figures 1 and 2, except that the tool is
especially adapted for forming two or more threads or spirals upon a single piece of
material. For this purpose I provide the auxiliary guide s adapted to run in the
groove previously cut. This guide is attached to a spring levert so that it can be
moved out of the groove in which it is running when the tool has reached the end
of its traverse.
I wish it understood that I do not limit myself to the details of construction herein-
before described, as it is obvious that I can vary the same without departing from the
nature of my invention, for instance, instead of employing a rotating leading
guide k I can employ a blade fixed in any suitable manner to the arm f.
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 :-
1. In a spiral-turning tool, the combination with a pair of pivotted handles and
arms, of an adjustable guide adapted to run on the work or upon a bar or rod
parallel with the work, and a rotating or fixed blade for causing the traverse of the
tool relatively to the work, for the purpose specified.
2. The improved tool and the modifications thereof, constructed and arranged
substantially as hereinbefore described and illustrated in the accompanying drawings.
101
1000
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.