An Improved Pantograph for Marking or Cutting Boot and Shoe Patterns and other Designs.
Year: 1899

page_text: Date of Application, 23rd June, 1899
Complete Specification Left, 23rd Mar., 1900-Accepted, 19th May, 1900
An Improved Pantograph for Marking or Cutting Boot and Shoe
Patterns and other Designs.
I, THOMAS ROCHE, Designer and Pattern Cutter, of 24, Guthlaxton Street, High-
fields, Leicester, do hereby declare the nature of this invention to be as follows:-
My machine consists of five arms or rods of wood, metal or other material
three of which A, B, and C are parallèl to each other. The rod B is made to
revolve on a centre bearing whilst the two other arms or rods A and C are placed
one on each side of the centre arm or rod B forming three parallel arms or
rods A, B and C.
Each of the three arms or rods A, B and C is made to slide so as to increase
or decrease its length, and can be fixed at any desired point by means of a
thumb screw or other arrangement.
The arms or rods A, B and C are attatched at their extremities to two other
arms or rods D and E.
The rod D has a sliding arrangement similar to the rods A, B and C.
At the end of the rod D is placed a pointed instrument or knife for marking or
cutting paper or other material. The arm or rod E has no sliding arrangement.
At its extremity is fixed a tracing point F.
By causing the, tracing point F to move over or along any shape form or
design the pointed instrument or knife G fixed at the opposite arm or rod D
will mark or cut a fac-simile or larger or smaller design as desired.
Dated this 21st day of June 1899.
An Improved Pantograph for Marking or Cutting Boot and Shoe
Patterns and other Designs.
I, Thomas Roche, of 24, Guthlaxton Street, Highfields, Leicester, Designer and
Pattern Cutter, 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:—
This invention relates to an improved pantograph for marking or cutting boot
and shoe and other patterns and designs, in which a central arm is fulcrumed
to a table or plate, the forward part of said arm together with one or more
arms parallel thereto being pivotted to a front cross arm carrying a tracing point
which is moved round and in contact with the stock pattern or design by the
operator.

page_text: The distance between the fulcrum of the pivotted central arm and the front
cross arm is fixed, but the parts of the central arms rearward of the fulcrum
are adjustable, and they are pivotted at their rear ends to a rear cross arm like-
wise capable of adjustment; and the objects of my improvement are (first) to
provide a pantograph capable of producing a fac-simile or a larger or smaller
diagram or pattern of a stock pattern, and (second) to produce differential diagrams
of a stock pattern, that is to say, produce a diagram or pattern for instance of a
sole larger than the stock pattern in which the required extra length and the
slight extra width will be given and the correct outline produced.
I attain these objects by the apparatus illustrated in the accompanying draw-
ings, in which,
Figure 1 is a top view of the entire apparatus; Figure 2 is a section along
the line Z-Z of Figure 1 showing how a stock pattern is supported in position:
Figure 3 is a vertical section through the fulcrum.
Figures 4, 5, 6 and 7 are sectional detail views showing how the arms are
pivotted. Figure 8 is a sectional elevation showing a sheet of glass over which
the paper is drawn on which the diagrams or patterns are produced. Figure 9
is a view illustrating a scale and showing the two parts of one of the adjustable
arms fixed at zero. Figures 10, 11 and 12 are details respectively of the tracing
point, cutting knife and holder therefor, and the instrument by which a diagram
or pattern is marked.
Figure 13 illustrates a grade to which the operator must adhere when adjust-
ing the several arms to produce a larger or smaller last than the stock pattern.
Similar reference characters will be employed to designate similar parts
throughout the several views.
The table or plate A has an opening approximately central, and in the said
opening is placed a flanged bush B carrying therein ball bearings C C respec-
tively, so that a spindle 1) passing downward through the said bearings C C₁ will
have freedom of movement with as little friction as possible. The said spindle D
has a flange D¹ and the latter is connected by screws (not shown) to the under-
side of a central arm b. The said arm and arms a, e, parallel thereto are
preferably alike in all respects, each of them being grooved or recessed at a¹¹¹
to that the rear parts a² 62 may be adjusted therein. A front cross arm E
is pivotted at EE to the central arms b, c, by pins F (see Figures 1 and 5)
and the near end of the said arm E carries a holder G into which is driven á
tracing point G. The latter is reduced at Gs so that the enlarged part, G³ rests
upon a stock pattern H when the point G2 is being traversed round the edge of
the said stock pattern H by the operator. The rear parts
of the
arms abc respectively are pivotted to a rear cross arm J at J1 J2 J3, the said
arm J being grooved or recessed at J so that the rear part Jo
therein.
be adjusted
A holder K is mounted in the end of the arm Jo (see Figures 1 and 11)
and has its lower end bored at K¹ to receive therein a marking instrument L,
or a collet L' which also is bored up its underside to receive therein a stalk M¹
of a cutter M the latter being free to turn. The stock pattern H (see Figures 1
and 2) is supported by bolts H H above a plate H3 having slots H³ therein
so that the said supporting bolts H¹ H¹ may be readily adapted to hold and
support stock patterns of other shapes and sizes. The marking instrument L (or
knife M) before mentioned, travels over a sheet of glass N secured to the table
or plate A hy screws N¹.
may
An opening A¹ is cut through the said table so that the paper (shown by
the dot and dash lines Figure 8) may be drawn upward and over the surface of
the glass and held at its front end by a spring clip P whose ends are coiled
round the pins P¹ of the brackets P fixed to the table A.
The roller Q carried by two spring plates Q1 bears against the length of
paper as it leaves a roll 0¹ and holds the said paper stationary at that end...
As shown in Figures 1 and 9, the adjustable arms of the apparatus are set at

page_text: ro, and when in this position the instrument L or knife M will produce a fac-
mile of the stock pattern H, shown in Figures 1 and 2, viz. a 4 size last, but
produce a 5 size last the movable part J of the arm J must be moved out-
ard until the line T comes in line with the division on the scale marked 2 and
e lines t on the arms as to the division on the scale marked 24.
The arms are retained in position after adjustment by the wing nuts R (see
gures 4 and 6) which are tightened on the pins R¹ which are adjustable
the slots formed in the several arms.
In Figure 7 an inverted cup S is shown threaded on the pin F¹ the lower
art of the cup partially enclosing a ball S₁ the lower edge of the cup being
ightly closed over the ball to hold it in position and thus forming a ball caster.
caster of this or other desired form may be placed on the pins F1 F1 at
pposite corners of the apparatus, see Fig. 1. The grade shown in Figure 13 is
u example only and does not purport to be adapted to every use to which the
pparatus may be applied, different grades being required for various purposes
nd supplied accordingly.
By using such a scale as shown in Figure 9 on all the adjustable arms the
apparatus is complete for any purpose the grades only differing.
It will be readily understood however, for some purposes it may be convenient
to mark the sizes on the arms a b c and J in which case the operator will only
be required to adjust the indicator lines or marks T and t on the adjustable parts
of the several arms to the required size marked on the arms a b c and J in which
case a grade such as shown in Figure 13 need not be supplied, though it is
obvious that this course would tend to complicate the marking of the scales in
the production of the pantograph, but such a course may be adopted without
departing from the spirit of the invention.
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. A pantograph for differentially grading diagrams from a stock pattern com-
prising a fulcrumed central arm of a fixed length forward of the fulcrum and
central arms parallel thereto, their forward ends being pivotally connected to a
front cross arm carrying a tracing point which is moved round the stock pattern
or design, the central arms all adjustable in unison, one part of each of the said
central arms having a scale thereon and the other or rear parts of said arms
provided with an indicator mark and pivotally connected to an adjustable rear
cross arm one part having a scale thereon and the other or rear part being
provided with an indicator mark the further end of said arm carrying the instru-
ment or cutting knife for marking or cutting the diagram, substantially as
described and illustrated in the accompanying drawings.
2. A pantograph for differentially grading diagrams from a stock pattern or
design having a scale on its adjustable arms which, in connection with the grade,
indicate the manner of using, and comprising a front cross arm of fixed length
carrying a tracing point, central adjustable arms of fixed length front of the
fulcrum and adjustable rear thereof, and a rear cross arm also adjustable and
carrying the instrument or cutting knife for marking or cutting the diagram,
substantially as specified and illustrated in the accompanying drawings.
3. In a pantograph the combination of a fulcrumed central adjustable arm,
arms parallel thereto and all adjustable in unison, a front cross arm carrying the
tracing point which is traversed round the stock pattern or design by the operator,
an adjustable rear cross arm which carries the instrument or cutting knife for
marking or cutting the diagram, the said central arms and the rear cross arm
having a scale and an indicator mark adjustable in relation to each other sub-
stantially as specified and illustrated in the accompanying drawings.
5 4. In a pantograph the combination of a fulcrumed central adjustable arm,
arms parallel thereto and all adjustable in unison, front cross arm carrying a

page_text: tracing point movable by the operator round the stock pattern or design, an
adjustable rear cross arm carrying the instrument or knife for marking or cutting
the diagram, and a sheet of glass over which the paper is drawn upon which
the diagram is marked or cut substantially as specified and illustrated in the
accompanying drawings.
5. The improvements in pantographs constructed, arranged and operating sub-
stantially in the manner described and illustrated in the accompanying drawings.
Dated this 21st day of March 1900.
THOMAS ROCHE.