Year: 1897

page_text: Date claimed for Patent under Sect. 103 of Act,
being date of first Foreign Application (in 19th Sept., 1896
New Zealand),
Date of Application (in United Kingdom), 13th Apr., 1897
Complete Specification Left, 13th Apr., 1897-Accepted, 19th June, 1897
COMPLETE SPECIFICATION.
Material.
We, WILLIAM HAMILTON LANDELLS, Engineer, and HENRY ZANDER,
Merchant, both of Ashburton, Canterbury, in the Colony of New Zealand, 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:
The object of this invention is to provide an apparatus by means of which holes
round, oval, square, oblong, and other desired shapes can be effectually and quickly
cut in wood, metal, or other material. By its use the holes are cleanly and
accurately cut whilst a great saving of time is effected. The apparatus consists,
briefly, of an endless sprocket chain or chain belt the links of which have cutters
formed thereon or attached thereto such cutters being formed according to the
shape of the hole required to be cut; this endless chain works over sprocket wheels
carried by movable slides fitted in a suitable frame and so arranged as to be
adjustable. The apparatus can be made so as to be driven by hand, steam, or
other power and provided with self-acting feed gear.
Referring to the annexed drawings which illustrate an apparatus intended to be
driven by hand power,
Figure 1 is a front elevation of the apparatus.
Figure 2 is a plan of same.
Figures 3 and 4 are, respectively, a side elevation and vertical section.
Figure 5 is a view of one of the slides, shewing adjustable bearings.
Figure 6 is a perspective view of a link of the endless chain having cutter formed
thereon.
Figure 7 is a perspective view of a link of the chain having a detachable cutter
secured thereon.
The same letters of reference indicate corresponding parts where they occur in
the several figures.
A is the frame of apparatus which may be secured to a bench or stand or to the
floor as may be desired. B B are slides fitted in the frame and which carry
spindles a a¹ and stud pins b which latter support two plates c between which two
sprocket wheels d d¹ are placed, sprocket wheel d being fitted on spindle a¹ and the
sprocket wheel d¹ being on a spindle d' attached to plates c. The spindles a a¹
work in adjustable bearings a² (Figure 5) fitted in the slides B B¹ by means of
which bearings the spindles a a¹ may be adjusted in order to regulate the tension
of the endless chain, slots being formed in plates c to allow said spindles to be

page_text: shifted. Over the sprocket wheels dd' an endless sprocket chain or chain belt e
works, the links of which, at required distances, (or every link if necessary), have
cutters formed thereon or attached thereto. A driving toothed wheel is fitted on
spindle a engaging a pinion y on spindle a', a mitre wheel & being fitted on opposite
end of said spindle a engaging a mitre wheel i fitted on a vertical screw rod j
working in a bearing attached to slide B and passing through a screw threaded
hole in top of frame A. A cross bar C is attached to the top of the slides B B¹
having a vertical screw rod k connected thereto and passing through a screw
threaded hole in top of frame A. A toothed wheel D is fitted on screw rod j
engaging a similar toothed wheel E fitted on the screw rod k, or two pulleys and a
belt may be used, these toothed wheels being secured by means of a key fitting in a
groove formed in each of said screw rods and a key-way in each of the said wheels
so as to enable the said screw rods to move up and down whilst the toothed
wheels D and E remain in gear. A handle is fitted on each end of spindle a.
The operation of the apparatus is as follows:-The material to be operated upon
is placed under the endless chain or chain belt and between the sides of the frame A,
the handles are then turned causing the endless chain e to rotate, whilst at the same
time the screw rodj actuates the toothed wheel D which engages the toothed wheel E
causing the screw rod k to move downward thereby depressing the slides B B
and causing the cutters on the endless chain belt to cut through the material being
treated.
The apparatus can be made of different sizes and the endless chain or chain belt
and cutters made of suitable sizes and strength according to the material to be cut.
The cutters may also be of varying shapes according to the shapes of holes required
to be cut. The detachable cutters as shewn in Figure 7 are screwed or otherwise
secured to the links in such a manner as to be easily detached.
An apparatus intended to be worked by steam power would obviously be made
very much heavier than the apparatus shewn in the annexed drawings and
differently arranged; the mode of feeding being arranged so that the table on
which the material being treated is placed, would rise instead of the slides and
chain or chain belt being lowered.
We do not confine ourselves to the precise details or mode of construction of the
apparatus, or the construction of the chain as shewn, as the construction and details
may be altered and varied according to requirements without departing from the
nature and scope of our invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The herein described apparatus substantially as and for the purpose set forth
and illustrated in the annexed sheet of drawings.
2. In apparatus for cutting holes in wood, metal, or other material, the
combination, with a frame having adjustable slides carrying spindles and sprocket
wheels and self acting gearing, of an endless chain or chain belt carrying cutters
substantially as and for the purpose set forth.
3. In apparatus for cutting holes in wood, metal, or other material, the use of an
endless sprocket chain belt having links of any desired form with cutters formed
thereon or attached thereto substantially as and for the purpose described.
Dated this 13th day of April 1897.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.