IMPROVEMENTS IN CUTTING OR TRIMMING MACHINES, CHIEFLY DESIGNED FOR USE IN THE MANUFACTURE OF SAUCEPAN-LIDS AND SIMILAR ARTICLES
Year: 1884

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co, Patent Agents,
Southampton Buildings London in the County of Middlesex do hereby declare
the nature of my invention for "IMPROVEMENTS IN CUTTING OR TRIMMING
MACHINES, CHIEFLY DESIGNED FOR USE IN THE MANUFACTURE OF SAUCEPAN-LIDS
AND SIMILAR ARTICLES" 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 machines, chiefly designed for cutting or trimming the
edges of articles stamped from sheet metal, such as the lids or covers of saucepans
and similar vessels. In such machines, circular cutters are arranged to revolve
in opposite directions and are adapted to engage with the edge of the article
to be trimmed, the article itself being caused to revolve during the trimming
operation.
The said invention has for its main object to construct a machine that will trim
the edges, not only of articles of circular shape, but also of those of oval and other
shape, the trimming of the latter having heretofore been accomplished by hand.,
The said invention comprises means whereby one of the circular cutters can be
adjusted to its proper position for performing the operation of trimming. It also
comprises what I term a universal carrier, that is to say, a carrier which is
movable in all directions on a base-plate. This carrier is provided with a plate.
or disc for the reception of the article to be trimmed. The said invention further
comprises various improvements as herein-after set forth.
In the accompanying drawings I have shewn how my said invention may be.
conveniently and advantageously carried into practice.
Figure 1 is a plan or top view of a machine constructed according to the said
invention.
Figure 2 is a section on the line x, x, Figure 1, drawn to an enlarged scale.

page_text: Figure 3 is a section on the line y, y, Figure 1, with the aforesaid carrier
removed.
Figure 4 is a horizontal section on the line z, z, Figure 2, drawn to an enlarged
scale.
Figure 5 is a side elevation, partly in section, shewing the circular cutters.
Figure 6 is a vertical section shewing a plate or disc on which the article to be
trimmed is placed.
Similar letters of reference indicate corresponding parts throughout the drawing.
A is the base-plate or frame, which is of any suitable construction; B is the
driving shaft. This shaft is carried horizontally in bearings in the frame A and
is provided with a driving pulley. C by means of which motion is imparted to it.
D is a bevel-wheel, which gears with a similar bevel-wheel D¹ whereby motion is
imparted to a vertical shaft E. On the upper end of the shaft is fixed a spur-
wheel or pinion F gearing with, and imparting motion to, a long spur-wheel or
pinion G mounted on a stud G₁ fixed in the frame A.
His a spur-wheel or pinion fixed on the lower end of the cutter-shaft I and
gearing with the upper portion of the wheel or pinion G from which it receives
motion. The spur-wheel F, moreover, gears with, and imparts motion to, a spur-
wheel or pinion K on the lower end of the cutter-shaft I'.
The cutter-shaft I is carried by, and revolves in, a suitable bearing in the
frame A or in a bracket attached thereto. The cutter-shaft I' is carried by, and
revolves in a bearing in, a slide L, which is arranged to be operated by a lever M
fixed on a rock-shaft N, and the movement of which is regulated by means of
a set-screw O. The slide L is fitted between guides P, P¹, and the set-screw O
strikes against the cross-bar 0¹ secured to the upper surface of the said guides,
when the slide has moved the desired distance. N¹ is an arm or lever fixed on
the rock-shaft N and connected by the rod R with the treadle-lever Q, whereby
it is operated.
S, S¹, S are screws whereby the cutter-shafts I, I can be adjusted vertically.
By depressing the treadle Q, the slide L is moved forward carrying with it the
shaft and cutter until the latter is brought over the upper surface of the
cutter on the shaft I, as represented in Figures 2 and 5. When the said treadle
is released, the parts operated thereby are moved back to their original position by
a spring or otherwise.
Tis the universal carrier, which is provided with arms or extensions T", T2
having casters T3, T4, and with an arm or link Ts having a caster To. The said
carrier is adapted to move by means of its casters on the surface of the base-plate
or frame A, and has secured to it, by a set-screw U or otherwise, a socket V, in
which a stem or rod W¹ attached to a disc or plate W is fitted to rotate.
The arm or link T5 of the carrier is fitted to rotate upon a stationary pivot X
fixed in the base-plate or frame A.
Y is an opening in the surface of the base-plate, which opening may, if desired,
be made somewhat larger or smaller than in the apparatus shewn, without inter-
fering with the operation of the machine.
The article to be trimmed is placed on the plate W held by the carrier T, and is
moved into contact with the revolving cutters i, i, which, while cutting the edge
of the said article draw the same towards them, thus causing it to revolve with
the plate W in the socket V. The said article is steadied in its revolution by the
hand of the operator.
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
First. In a machine for cutting or trimming the edges of saucepan-lids or similar
articles, the combination, with two circular cutters, arranged to be rotated in
opposite directions, of means for adjusting one of the said cutters, for the purposes
specified

page_text: Second. In the said machine, the combination, with the revolving cutters, of
a carrier movable in all directions on a base-plate or frame and provided with a
revolving disc or plate to receive and support the article to be trimmed, for the
purpose above specified.
Third. The improved cutting or trimming machine consisting of the parts con-
structed and combined substantially as described with reference to the accompanying
drawing and operating as, and for the purpose, set forth.
HASELTINE, LAKE & Co.,
For the Applicant.