Year: 1888

page_text: Date of Application, 31st Jan., 1888
Specification Accepted, 20th Apr., 1888
133
3444
Articles.
I, HEINRICH JORDT ANTHON, of the firm of Anthon & Sons, of Flensburg, in the
Empire of Germany, Manufacturers, do hereby declare the nature of my said inven-
tion 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 the manipulation of flasks and moulds for casting pulleys
and analogous articles, and its object is to effect improvements in such operations.
And in order that my said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts.
Fig. 1 is a sectional elevation of the apparatus. Fig. 2 is a plan (partly in section)
of the upper part of the apparatus. Figs. 3, 4, 5 and 6 are sectional elevations,
illustrating various stages of the process of moulding pulleys, and Figs. 7, 8 and 9
shew further details.
S is a frame, sustaining the fixed ring R. 6 is a movable ring, the inner diameter
of which corresponds with the outer diameter of the intended pulley. Concentrically
with the ring b, and exactly in the same plane as b, is fitted a central plate c. This
plate is sustained by the frame S. e e are steady pins which enter the ears or lugs e¹ el
of the flask k. is a band wheel for actuating a pinion n, which gears into the
bevel wheel t, formed in one with the nut u. This nut works in, and is sustained by, :
the boss w. By turning the hand-wheel h, the screw shaft can be raised and
lowered. This shaft carries a frame J, which supports the movable annular pattern a,
consisting of four slotted arms j', in which the adjustable bolts d d are fitted, for
securing pattern rings of various diameters. D is the half pattern for the hub of the
intended wheel. Upon the plate c the spoke pattern (shewn in plan in Fig. 2) is
placed, the depth being half the thickness of the intended spokes. The flask is filled
with sand in the usual manner, and well rammed down. The screw shaft is then
lowered, whereby the pattern a is withdrawn from the same. The flask k, with the con-
tained sand, is then removed, to form one half of the mould, and the operation is
repeated with another flask, for the formation of the other half. After which they are
placed together in the usual manner for casting, suitable " gits" (not shewn in the
drawings) being provided for pouring, and escape of air. Fig. 9 represents the
description of pulley thereby formed.

page_text: The pattern ring a is tapered in order to afford greater strength to wide pulleys than
to narrow pulleys.
When driving pulleys with coned or cambered rims are required, the outer annular
ring of sand is first rammed in; the pattern ring a is then lowered, and a template g
attached to a revolving arm gl, pivotted at i, is fitted, whereby the sand is moulded
to the required curve, as shewn in Fig. 3. The template 9 and arm g¹ are then
removed, and the pattern ring a is again raised to its former position, The pattern
of the hub D is then placed in position, and the sand rammed in; in the usual manner,
to complete the formation of the mould.
Figs. 4, 5, 6 and 7 shew the method of moulding driving pulleys, with double sets
of spokes, as shewn in Fig. 8. For this purpose three flasks D1 D2 and D³ (Fig. 6)
are used.
One side of the driving pulley, outside one of the sets of spokes, is first moulded,
as clearly shewn in Fig. 4. This fills the flask D'; the pattern ring being raised to
the distance (Fig. 8). The central flask D2 is then placed upon the frame S; the
pattern for the hub being placed in the centre, and the pattern ring a raised to the
position shown in Fig. 5, equal to be united lengths of Z3 and Z³ (Fig. 8). A number
of plates oo (equal to the number of spokes) as shewn in plan in Fig. 7, are then
placed in position, having screws pp, enclosed in gas pipes as sleeves or distance
pieces. The sand is then rammed on the outside of the pattern ring a, and also to
the height (Fig. 8) in the central portion. The screws p p are used to sustain the
sand, as shewn in Figs. 5 and 6. m is a spoke pattern of the full thickness of the
spokes, placed at the level Z2, with the pattern of the hub in position, as shewn in
Fig. 5.
When the pattern for the remaining portion of the hub has been inserted, and the
flask properly rammed in with sand, to the top the flasks are separated: the
patterns removed, and the flasks again put together, for casting, as shewn in Fig. 6.
In the drawings the sand is represented in section by broken lines, and the metal
by solid lines.
!
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 moulding apparatus for the purposes aforesaid, the application and use of
tapered pattern rings a, mounted, arranged, and operating substantially as and for the
purposes herein before described and shewn on the drawings.
2. In moulding apparatus as aforesaid, the application and use of the rotating
template, for imparting concavity to the sand after ramming, mounted, arranged,
and operating substantially as and for the purposes herein before described and shewn
on the drawings.
3. In moulding apparatus as aforesaid, the method of moulding driving pulleys and
analogous articles, with two sets of spokes, by means of three flasks D1 D2 and D³,
plates o, and suspension screws p, substantially as herein before described and shewn
on the drawings.
4. The general construction, arrangement and combinations of the several and
respective parts, together constituting my improvements in apparatus for moulding
pulleys and analogous articles, substantially as hereinbefore described and shewn on
the drawings.