Oval Cutting Machine
Year: 1899

page_text: Date of Application, 7th Feb., 1899-Accepted, 25th Mar., 1899
COMPLETE SPECIFICATION.
Oval Cutting Machine
I, LOUIS MARCHAND, of 223, Ridge Avenue, Allegheny, Pa., U.S A., Manu-
facturer, 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:
Fig. 1 is an elevation of my device with the table removed. Fig. 2, is a like
plan view. Fig. 8, is a broken view of the bed of the machine showing the eccen-
tric slide. Fig. 4, is an inverted plan view of the revolving table; Fig. 5, is a
sectional view along the line - in Fig 7, Fig. 6, is an elevation of my machine
fitted with a vertical cutter: Fig. 7, is an elevation of my device complete, fitted
with a horizontal cutter and Fig 8, is a plan view of the same showing a piece
of material undergoing the operation of cutting.
My invention broadly stated is a machine for cutting ovals in material of any
character
The following is a detailed description of my device; 1, is the bed of the
machine on which is erected cutter frame 2. 3, is the cutter arm fitted to slide
longitudinally in frame 2. On the forward extremity of cutter arm 3 is head 4
in which is adjustably held stem 5 supporting horizontal cutter six. Cutter 6,
1s provided with pulley 7, which is connected with pulley 8 by belt 9 Pulley 8
is mounted on power shaft 10. Shaft 10 is journalled in bracket 11 which
bracket is preferably made integral with the rear extremity of cutter arm 3, thus
maintaining a fixed distance between pulleys, 7 and 8
12, is a table fitted with slide 13 boxed therein said slide being mounted on
spindle 14. Spindle 14 passes through hole 15 in bed 1 and is revoluble by any
known means. 16 is a cross recess in bed 1, with bevelled edges in which is
fitted eccentric slide 17. 18 is a raised circular portion of said slide engaging
recess 19 on the under side of table 12. The lesser dimension of recess 19 is
parallel to the motion of slide 13 and is slightly greater than the diameter of 18,
while the larger dimension of recess 19 is at least nearly twice the diameter of 18,
thus permitting 18 to revolve eccentrically in recess 19. 20 is a longitudinal
slot in said eccentric slide 17 through which passes spindle 14. 21 21, are dogs
of any usual design for holding the material on the table 12 and 22 represents a
piece of material so held. Fig. 6, illustrates my device fitted with a vertically
revolving cutter 6 mounted in journal 5 on stem 5 and fitted with pulley 7* to
which power is communicated by belt 9*
The operation of my device is as follows: the material 21 on which the opera-
tion is to be performed is fixed to table 12 by dogs 21-21 The length of cutter
arm 3 determines the major axis of the elipse, and is drawn out to the desired
position as indicated of scale 23 on arm 3. The minor axis is determined by the
position of eccentric slide 17 in relation to recess 16. This is graded by means
of scale 24 on slide 17. As slide 17 is drawn out it carries with it by means of
proiection 18 table 12, which moves on slide 13 contained therein. Slot 20
enables slide 17 and table 12 to move eccentrically to spindle 14 but slide 13

page_text: being fixed to said spindle remains stationary. Power is now applied to revolve
spindle 14 and in turn slide 13 which causes table 12 to revolve eccentrically
around raised portion 18 on slide 17. The material is thus so presented to the
revolving cutter
determined elipse.
as to cause said cutter to cut an oval of the dimension of the
My machine may be used in any case where oval cutting is desired on any
material and although I have described minutely the different parts of my device
I do not limit myself to the particular parts enumerated
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 oval cutting machines, the combination of a bed; an eccentric slide
adjustably carried by said bed, a projection on said eccentric slide; a revoluble
spindle passing through sand bed; a slide fixed to said spindle; a table adjust-
ably mounted on said slide and a recess in said table engaged by said projection.
2. In oval cutting machines, the combination of a bed; a slide mounted in
said bed and adapted to move transversely to the line of movement of a cutter
a slotted block mounted on said slide, a spindle passing through said
block and slide and secured to a second slide; a rotating table in which said
second slide is adapted to reciprocate; means of engagement between said rota-
ting table and said slotted block and a cutter arm capable of being extended over
the surface of said rotary table.
arm;
D1
·
ROBERT E PHILLIPS, Assoc M.Inst.C.E, M.I.Mech E.,
Chartered Patent Agent,
70, Chancery Lane, London, W.C.,
Associate Agent.