US1050370A - Manufacture of chains. - Google Patents

Description

G (T. MoGLASHAN & D. WILLIAMS. MANUFACTURE OF cams.

APPLICATION FILED SBPT.-19, 1911.

Patented Jan. 14, 1913.

been conduct ed a,

UNITED; STAgglj iilENT OFFICE.

one?

OTTON MQGLASHAN. OF DUNEDIN, AND DAVID WILLIAMS, 0]? GREYMOUTH,

EW ZEALAND.

MANUFACTURE OF CHAINS.

Application filed September 1 This ltwfi" uto to that protr s o2? manufat-ar w alhc chains 1 til kinds 213' a: apparatus in h'wh separatt are pained by casting 12 intermediate links. n are formed by secprocess has hitherto .z The chain molds 4 1; modeling plate in an n .1. the cores required tor molds being inolded in box with he ctional halt link 'l he o; ,n plated in the mold by lztdill i a n ing plate zit-d the lituiid metal poured into the mold hrough rhannrls.

The plt tlli invention to the manufacture of chains having stud bars arross the links. and consists in the in roved pro '|.;ahereinotter described.

The proc s wil be evident from the follo ing description to ken inconiunrtion with the accompanying drawings. in which-- Figure l is a longitudinal vertical sectional view of the mold taken on the line l--1 of Fig. 2!. and showing the patterns and links in place; Fig. 2 is a plan view showing one of the mold boxes with the pattern therein and indicating a dome of sand mold up upon the pattern; Fig.- 3 a transverse I -ction taken on the line 3-3 of Fig. '2 the stage of the process shown in and Fig, i is view of the split with and til t the nlttll't('t oi tional patteins.

have been moldro upper and lot or completing the (I a c r:- pat t eriw.

relates particularly g out he petmold-box 5 ant winch may be t 1 tie t t S and Jan Q. a hulls a split iattern 9 comp epara le halves is used. the proiectto arming the stud bars.

The proress is carried out as follows: The pattern fl is joined up with prawionsly cast links 12 and placed on the sand in the bot an ordinary S'pe eification of Lettersrlatent.

l l l l l l l l l l l l l i l link are provided Patented Jan. 14, 1913.

Serial No. 650,291.

tom mold box 6. the sand normally extending to the level 14 and being molded up about the pattern to a distance as indicated by the dotted line 15 of Fig. 1, whereby a dome of sand is formed having an appearance as shown at 10 inl igs. 2 and 3, said dome covering all but the upper and end faces of the pattern. The upper mold box 3 is then placed in position and sand is placed therein and rammed, a runner 17 being provided. The molds are then turned over, the mold box t3 coming uppermost and being removed and the sand knocked out. Sand is now again molded up about the pattern until another dome is formed. this dome also having an appearance as indicated at to in Figs. 2 and 3. It is to be noted that now a sort of core is formed extending in one/direction to the dotted line 15 and in the other to the dotted line 18 shown in Fig. l. The mold box 6 is again placed in position and sand rammed therein around said core. The box 6 and the sand therein are carefully withdrawn exposing one side of said core and pattern. The half of the pattern then uppermost is removed and the box 6 and the sand therein carefully replaced. The mold is again reversed. the box 5, now becoming uppermost, is removed, the remaining half of the pattern is removed, and the box 5 with the sand therein is replaced. After being cottered and weighted down. the mold is ready for casting.

Tn carrying out the invention the separate links are cast in molds or chills in the well known way.

The mold boxes may be made of such an area as to permit of any desired number of patterns and links being arranged therein in the proper manner. Ordinary molders sand is used.

The boxes used in making the connecting with openings in their the made sections extendthe known 100 edges to permit of ing in between the boxes. in manner.

We claim as our invention: y

t. The herein described process of preparing molds for chain links, said process comprising placing in the sand of the first 1015 mold box a divided link pattern. the plane of division of the pattern being substanliallv flush with he sand; molding up the sand to cover all but the u per and en faces of the pattern; placing t 2 second bot;

on the first and packing the second box with sand; re ersing the mold and removing the first box and then the sand therefrom; molding up the sand in the second box to cover all but the upper and end faces of the pattern; replacing and packing the first box with sand; removing said first box; retaining the sand therein; removing the upper halt of the pattern; replacing the first box: reversing the mold; removing the second box and the remaining half of the pattern; and then replacing the second box.

2. In the manufacture of chains and the casting of the links thereof, the herein de scribed process for preparing the molds for the castings. said process consisting in placing, in th sand of the first mold, box. a divided link pattern and cast links linked in the link pattern, the plane of parting of the pattern being flush with the level of the sand; niolding up the sand to cover all but the upper and end faces of the pattern; placing the second mold box on the first and packing the second box with sand, a runner being provided; reversing the mold. so that i l l l l I l l l r the first box is on the top: removing the said first box and then the sand therefrom: so that half of the pattern is exposed: molding up the sand so as to cover all but the upper and end faces of the pattern; replacing and packing the first box with sand: removing the same retaining the sand therein: removing the upper half of the pattern; replacing said first box and sand and reversing the mold; removing said second box and the remaining half of the pattern; and then replacing said second box.

In testimony whereof, We ha \e signed this specification in the presence of two subserili ing Witnesses.

Nilnesses as to the signature of George Cotton \lctllashanr 'l. H. 'lnoaueamn T. l. ALUEQONQ \Vitnesses t) the signature of i f snl d W'il'liams:

A. A. \Vrmov. A. (l. TlfClilll l

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