US1913107A - Method of casting and repairing chain - Google Patents

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June s, 1933. 'R C, DE BRUYNE 1,913,107

METHOD OF CASTING AND REPAIING CHAIN Filed Nov. 10. 1930 2 Sheets-Sheet l 'imm -w l1///// /\l l/ June 5, 1933 P. c. DE BRUYNE l 1,913,107

METHOD OF CASTING AND REPIRING `CHAIN I Filed Nov. 10, 1950 2 Sheets-Sheet 2 2 5 Eff/4 nyenzw' Patented 6, 1933 I UNITED STATES PATENT oFFicE PHILI? C. DE BRUYNE, 0F ST. CHABLIS, ILLINOIS, ABSIGNOR TO MOLINE MALLEABLE IRON COMPANY, 0F ST. CHABLIS, VIIJ'JINQIS,`A CORPORATION 0F ILLINOIS muon or cas'rnmann mamme cnam Applicatie mea number 1o, 1930. semi No. 494,645.

My invention relates toa method of 'casting or forming or repairing chain or chain links, and particularly to the casting or repairing of chain consistin of a plurality of inter-penetrating links, al 'of which links shall be solid and without joint or seam. Another object-is the provision of a method for casting connecting links to join adjacent preformed links. Another object is the provision of improved means for forming the molds of said connecting or inter-pene trating links and the inter-penetrating parts thereof. Other objects will a pear from time to time inthe course of t e specification and claims. 1

I illustrate my invention more or less diagrammatically in the accompanying drawings, wherein-- Figure 1 is a plan view of the attern;

Figure 2 is ,a section on thev ine 2-2 of pattern;

igure 3 is asection showing the pattern in the cope;

v Figure 4 isa plan view illustrating the drag with links in position;

Figure 5 is a section on the'line 5-5 of Figure 4 with the mold ready for casting;

Figure 6 is a section on the line`6`6 of Figure 7 is a section on the line 7-l-7 of Figure 2; Figure 8 illustrates a core employed;

Figure 9 is a plan view of variant Vform of Fi re 10 is a section on the line 10-10 of Figure 9;

Figure 11 1s a'plan view illustrating drag 4 with chains in position and ready for casting and 1 of Figure 11, with the mold ready for cast'- 1ng i Like parts are indicated by, like symbols throu'fghout the specification and drawings.

Re erring to the forms of Figure 1 and followin A generally indicates va pattern `board w ich may be of aluminum or any .suitable metal or any other suitable material and which has formed on V each face thereof a plurality of half molds. Al lindicates re 12,is a section on the line l12--12 horizontal links and A2 indicates inter-pene trating` vertically positioned links. A3 indicates the patterns adapted to form gates for pouring, such gates being indicated in communication with adjacent horizontal link forms A1, asv at A, A5.- The gates formed pass through apertures in the outer projections B2 from the end walls of the cope.

Bi indicates sand which may be rammed into 1 the cope and against and about the pattern to receive its form or impression. Then the cope has been rammed, it may be inverted and the pattern Withdrawn. VThe same process is followed with the drag B, the pattern being inverted and the drag applied to the opposite side, rammed, inverted and then the pattern withdrawn.

It will be understood that in my process the links filling the impressions A1 are poured simultaneously, while the links conforming 4to the impresslons A2 are preformed and are then. provided with supplemental molds or cores which complete the impressions or forms necessary for the pouring of the links A1. For example I may provide cores D, as shown in detail in Figure 8. The exterior surface D .1 of each such core may conform to the lnterior of one end 'or of an intermediate portion of the cavity of one offthe preformedor precast links C1 but due to the vfact. that theV adjacent` surfaces of the link andfcore are bothI arcu-Y ate (see Figs.v5 and 6),-the link and cores may be .rockingly moved. with respect to each yother while fulcrumingupon the line of contact between. thegelements' The projecting ends of the cores, conform to the impression made by the portion A'I of the pattern. Thus whena preformed link is pro# vided at each end with one of the cores D, the link C1 and its cores D being positioned in the corresponding cavitieslformed by thc pattern, the cores D are in proper position to communicate with the apertures A"I which they complete to form a cavity which, when filled with metal, will produce one of the desired seamless or jointless inter-penetrating links.

In preparing for the casting, the cores D may be threaded in the preformed links, and links and cores are then positioned in the corresponding cavity A2. After the preformed links have been positioned, with their cores, in the drag, the cope may then be lowered in place to form the completed mold shown in Figure 5. It will be under.- stood that the interior apertures of the cores D are of proper size and position to form a complete and regular chain link. Metal may then be poured through the gates- A3.

The cores D may be formed in any desiredcore box and may beof sand and oil. 'lhey are baked in any suitable manner in order to reach a predetermined range of hardness, being sufficiently hard for ready handling. VAfter the intermediate links have been poured and have set the entire mold, includingthe cores D, maybe broken to free the completed length ofhain.

Clearly I may pour a greater or a lesser number of links and I do not wish to be limited to the precise arrangement of the links in the mold, except so far as I specifically limith myself by my claims. For example, it may frequently be necessary to repair a length of chain by replacing or adding a single length. Or it may be desired to join two shorter links of chain in order to form a longer length. In such case it is desirable to provide a mold adapted to receive the terminal links of preformed chain, which terminal links may be joined by a single link impression. Referring for example to Figures 9 to 12, I illustrate a pattern board E of any suitable material which has formed on each face thereof a complete half link impression El lying in the general plane of the board, and impressions E2 of the ends of inter-penetrating links, each such impression E2 having asso-- ciated therewith the half impressions E3 to conform to one of-the sleeves or cores D. A single gate impression E4 is employed.

In em loying this pattern, a drag G and a cope l are employed, as above described in connection ywith the form of Figures 1 and following. Preformed links G2 project through the walls of drag-and cope into the apertures E2. Threaded into these links, at the inner end of the aperture of each link, is one of the cores D conforming to the form E3 of nthe pattern. Thereby an impression for a complete link is formed and when metal is poured through the gate E,

nate link impressions, and positioning thev cores, independently o f variations in the,

position of pre-formed links, to complete the link mold impressions which inter-penetrate the impressions in which the pre-formed links are positioned,- pourin said interpenetrating links, and breaking the mold'.

'and cores to free the completed chain.

2. The process of joining adjacent preformedchain links which includes positioning'said links in mold apertures, providing an inter-penetrating vlink forming mold aperture therebetween, and independently positioning cores within the apertures of each of said pre-formed links, and in con formity to said interpenetra'ting link forming mold aperture, pouring molten metal into said mold apertures, and breaking the mold'and cores to free the completed chain.

3. The process of joining adjacent preformed chain links which includes positioning said links in mold apertures, providing inter-penetrating link forming mold apertures therebetween, independently position'- ing cores within the apertures of each of said pre-formed links, and in conformity to said inter-penetrating link forming mold apertures, pouring molten metal into said mold apertures, maintaining an additional body of molten metal in communication with said mold apertures, during the pouring and setting of the links so formed, and breaking the mold and cores to free the completed chain. y Signed at St. Charles, county of Kane and `State of Illinois, this 3rd day of Nov. 1930.

PHILIP C. DE BRUYNE.

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