US1539881A - Chaplet - Google Patents

Description

F. L. SPENCER ET AL CHAPLE'I Filed Aug. 29, 1923 a s w 9w w 4 v 7 6 6 wfi \m u Patented June 2, .1925.

UNITED STAT FRIEND SPENCER AND THOMAS JONES, OF ROCHESTER, NEW YORK.

I CHAPLET.

Application filed August 29,1923. Serial No. 660,033.

and more particularly to chaplets such as are used for supporting a core in a mold and it has for its object to provide a simple construction of metallic chaplet which can be produced at a 10W cost and that will hold itself firmly in position under the Weight of the core. Further objects of the invention I are to firmly anchor the chaplet in the sand so that a sustained position will be assured and to dispose of it in such manner that when melted by the incoming metal it w1ll be readily absorbed. To these and other ends the invention resides in certain improvements and combinations of parts allas will hereinafter be more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawing:

Figure 1 is a vertical sectional view through a molders flask containing a mold provided with a core supportedby a plurality of chaplets constructed in accordance therewith and illustrating one embodiment of our invention;

Figure 2 is a perspective view of one of the anchoring pieces;

Figure 3 is a perspective view of the metallic chaplet, and;

Figure 4 is a sectional view taken longitudinally of the chaplet;

Similar reference numerals hroughout the several years indicate the same parts.

Some of the usual difliculties experienced in the use of chaplets are maintaining the supporting head at just the right degree of projection from the sand, and keeping it upright or normal to the surface of the core that it is used to support. In the practice of our invention, aside from improving the metallic chaplet itself we support it in an anchoring body that holds it firmly and that has a large area of contact in the surrounding sand, so that none'bf the ordinary jars and stresses are apt to .displace it.

Referring more particularly to the draw: ing 1 indicates the bottom board, 2 the drag and 3 the cope of a simple form of molders flask in which a mold 4 has been made. The core 5 for this mold is shown support ed'by four of our improved chaplets,'each consisting of a supporting head 6, a shank 7 and a shoulder 8. The head engages the core while the shoulderrests against the wall of the mold and gives a broad support that defines the degree of projection of the head and, hence the thickness ofthe cast shell.- The shank '7 is ordinarily simply pressed into the sand but We provide a firmer support by using a plurality of anchoring blocks 9, the surfaces of which are flush with the wall of the mold on one side and whichcontain bores 10 normal to such surfaces. At the mouth of the bore is a counter-sunk portion 11 to receive the shoulder flange 8 of the chaplet. These anchoring blocks may be of various sizes and shapes and may be individual to each chaplet as shown in the cope or a plurality of chaplets niay be supported in one anchor block as shown in the drag. The blocks are preferabl-y of sand but are self sustaining and firmer than the surrounding sand of the flask and are preferably made in the same manner as an ordinary core, that is molded with a suitable binder and baked so that they are ultimately frangible but will hold their form for ordinary purposes. One of the individual blocks is shown separately in Figure 2 of frusto-conical shape so that itwill lock itself in the sand in the manner of a dove tail and not fall into the mold when inverted as shown in the cope portion of Figure 1. The shank portion 7 of the chaplet being inserted in the bore 10 and the flange or.

shoulder 8 lodged in the countersunk portion 1],, the device is firmly held against lateral displacement and maintains the core 5 accurately spaced in the walls of the mold without fear of disarrangement.

lVe prefer to plate the chaplet with an easily fusible metal such as tin in order to cause it to melt quickly and fuse with the casting and at the same time we utilize the tin bath as a securing means for the flange B. This flange as shown in Figure 4 is preferably constituted by a washer slipped over the shank 7 to a point at the desired dise I I I tance from the head 6 and the tin plate or protective coating indicated at 12 1n Fi ure 4 acts as a solder to fix. the washer in place. 4

5 We claim as our invention:

1. A chaplet embodying a supportin head havin an'integral shank and a shoul er 1nterme' iate the shank consisting vof a separate washer encircling the same, the whole structure carrying a coating of a more readily fusible metalby which the washer is secured to the shank.

2. The combination .with a self sustaining non-metallic anchoring piece adapted to 1 beimbedded in the moldlng sand and having greater cohesive E1: erties than the latter, of a chaplet em ported in such anchorin piece, a head projectin therefrom an an intermediate shoul er abutting the anchorin piece.

3. The combination with a se 15 sustaining non-metallic anchoring piece adapted bore, of a cha ying a shank sup- 'imbeddedfin the moldingsand and having ing non-metallic anchor-ing piece adapted to be imbedded in the molding sand and having greater cohesive properties than the latter, said anchoring 'piece being provided with a bore and countersunk at the mouth of the bore, of a cha let embodying a shank supported in such ore, a head projecting therefrom, and an intermediate shoulder occupying the countersunk portion of the anchoring piece.

FRIEND L. SPENCER.

THOMAS JONES.

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