A Method of and Apparatus for Producing Articles of Malleable or Annealed Iron, having a Part thereof Chilled, specially applicable for the Manufacture of Cord Clamps for Harvesting Machines.
Year: 1899

page_text: Date of Application, 17th Apr., 1899-Accepted, 17th June, 1899
COMPLETE SPECIFICATION.
A Method of and Apparatus for Producing Articles of Malleable or
Annealed Iron, having a Part thereof Chilled, specially applicable
for the Manufacture of Cord Clamps for Harvesting Machines.
I, SAMUEL KIRKWOOD DENNIS, of West Pullman, Chicago, County of Cook, and
State of Illinois, United States of America, Mechanical Engineer, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement: —
•
My invention pertains to a new and improved cord holder for harvesting
machines, the principal portion of which consists of malleable or annealed iron,
but which has at one or more points subjected to wear, a chilled portion or surface
formed therein. My invention also pertains to an improved method for forming
such a structure, and to novel apparatus for carrying out said method.
In the drawings, Fig. 1 is a front elevation of the apparatus in position for
the carrying out of the process; Fig. 2 is a section of the apparatus on the line 2-2
of Fig. 1; Fig. 3 is a plan view of the apparatus shown in Fig. 1; Fig. 4 is a
plan view of the same apparatus in section on the line 4-4 of Fig. 1; Fig. 5 is a
section similar to Fig. 2, but taken after the casting has been completed; Fig. 6;
is an inverted plan view of a cord holder for a grain binding machine constructed
in accordance with my invention; Fig. 7 is a plan view of the same article before
the chilled portion has been cast into position; and Fig. 8 is a similar view
of the article completed.
Referring first to the cord holder best shown in Figs. 2, 6 and 8, A represents
the conical upper surface of the hearing portion of the cord holder, which has
there in the channels B, C and D, which permit the escape of the ends of the
cord. The hook E is formed integral with this portion, and has certain functions
in the operation of the cord holder which need not be here considered. In the
operation of the cord holder, that portion of the bearing surface to which the
letter is applied is subjected to a great deal of wear from the movement of the
cord, and in the operation of the device if this portion is constructed of malleable
or annealed iron, as is the body portion of the holder in order to secure the
necessary tensile strength, this portion soon becomes worn away, so much so as to
permit the cord to slip, and thus destroy the efficiency of the clamping action of
the holder, which action is essential to the successful operation of the machine.
In order to secure the necessary hardness for this surface F in the malleable
iron the body of the holder is cast and annealed in the ordinary manner, leaving
therein the cavity G where the chilled surface F is to come, and this cavity G
leads through to the under side of the holder, which I preferably make of the
hollow conical shape shown in Fig. 2.
After the malleable portion. has been formed in the customary manner, I place
the cord holders in the apparatus shown in Figs. 1 to 5, which apparatus con-
sists of the base H, the holders J, the standards K and the caps L, which are
pivotally mounted on the rod M, as subsequently more fully described. The

page_text: a hollow portion of the rotating member, the said chilled metal being cast into
the hollow portion, through the contracted opening, and into the aperture G
against a chill, substantially as described.
5. A cord holder for self-binding harvesters having its rotating member
including the shaft and the major portion of the conical bearing surface A com-
posed of malleable or annealed iron, and having the portion of said conical
bearing surface A composed of chilled metal cast into an aperture G formed in
said surface, which aperture has a contracted opening into the hollow base of the
rotating member, substantially as described.
6. A cord holder for self-binding harvesters constructed substantially as shown
and described.
7. The process of founding malleable metal articles having a chilled portion
or surface, which consists in placing the malleable portion of the article in a
holder shaped so that it co-operates with the malleable portion to form a mold
for the chilled portion, the holder forming the chilled surface; and in casting the
chilled portion in the customary manner in the mold formed by the malleable
portion of the article and the chilled portion of the holder, substantially as
described.
8. The process of founding malleable metal articles having a chilled portion or
surface, which consists in casting the malleable portion and annealing it in the
ordinary way; in placing the malleable portion of the article in a holder shaped
so that it co-operates with the malleable portion to form a mold for the chilled
portion, the holder forming the chill surface; and in casting the chilled portion
in the customary manner in the mold formed by the malleable portion of the
article and the chilled portion of the holder, substantially as described.
9. The process of founding malleable metal articles having a chilled portion
or surface, which consists in placing the malleable portion, which has a centrally
contracted opening therein, in a holder shaped so that it co-operates with said
opening to form a mold for the chilled portion, the holder forming the chill sur-
faced and in casting the chilled portion in the customary manner in the mold
thus formed, substantially as described.
10. In an apparatus for casting a chilled portion into a body of malleable or
annealed metal, the body of metal, and the holder supporting said body, said
holder having a surface acting as a chill, with an apertured case l shaped to fit
said body and cover one end of the cavity for the chilled portion, and a cap
located to hold the case in position, substantially as described.
11. In an apparatus for casting a chilled portion into a body of malleable or
annealed metal, the body of metal, and the holder supporting the body, said
holder having a surface acting as a chill, with an apertured case P to fit into
such body and to cover the upper end of the cavity for the chilled portion, and a
swinging cap having an aperture through which the molten metal is poured to
enter the case, which is held in position by said cap, substantially as described.
12. In an apparatus for casting chilled portions into bodies of malleable or
annealed metal, the base H carrying a plurality of holders shaped to receive the
bodies, with a corresponding number of apertured cases l shaped to fit into said
bodies and cover the cavities for the chilled portions, a plurality of caps located
to hold the cases in position, and a common rod upon which said caps are
independently pivoted.
13. In an apparatus for casting a chilled portion into a body of malleable or
annealed metal, the holder shaped to receive the body, with an apertured case P
having its lower portion shaped to fit into said body and cover the cavity for
the chilled portion, and having the overflow channel R in its upper side, and a
cap L to hold the case and having an opening therein through which the metal is
poured into the cavity.
14. In an apparatus of the class described, a mold comprising the article into
which the hardened portion is to be cast, with the holder therefor, and the
apertured, frangible case P having its bottom fitting into a cavity in the article