US1459464A - Molder's chaplet - Google Patents

Description

J. W. BRADLEY MOLDER' S CHAPLET- Fi'led Sept. 25 1920 2 Shets-Sheet 1 'yJune 19, i923.

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Patentedy .lune l 9, l 923.

` tanta MULDER S CHAPLET.

Application l'lled September 25, 1920.

To all 'whom it may concern.

Be it known that I, rJOHN W. BRADLEY, a citizen of the United States, residing at Buffalo, in the county of Erie and State of- New York, have invented certain new and useful Improvements in Molders Chaplets, of which the following is a specication.

My invention relates to melders chaplets adapted t0 hold cores spaced from the walls of the molding spaces formed in molds for producing metallic or other castings.

The invention has for its primary object the provision of al chaplet which is cheap, exceedingly light in weight, simple in construction, and capable of sustaining compare atively large cores of considerable weight.

Another object of my invention is the production of a ch-aplet which can be constructed of lighter material than other chaplets of the same size and which are so constructed that the tendency of being depressed into the sand of the mold is reduced to the minimum.

A still further obj ect is to provide a chaplet having two imperforate bearing portions and asupport for said bearing portions arr-anged centrally thereof, yet being integral with said bearing portions. A

With these and other objects in view the invention consists in a one-piece chaplet having two imperforate bearing portions and a support centrally between said bearing portions.

It further consists in the novel features of construction and arrangement of parts to be hereinafter set forth and more particularly pointed out in the subjoined claims.

1n the drawings Fig. 1 is a sectional view of a mold showing my improved chaplet to support a cylindrical core within two semi-cylindrical cavities formed, respectively, in the cope and drag of the mold.

Fig. 2 is a plan view 0f the blank from which the preferred form of my chaplet is constructed. Figs. 3 and 4 are perspective views of a chaplet formed from the blank shown in Fig. 2, these figures being viewed from different points.

Fig. 5 is a vertical section taken on line.

5 5, Fig. 6.

Fig. 6 is a horizontal section taken on line 6-6, Fig. 5.

Fig. 7 is a plan view of a blank from which a modified form of chaplet is constructed.

Serial N0. 412,83

Figs. 8 and 9 are perspective viewsof this modified form of chaplet viewed from dif-` ferent points.

Fig. 10 is a side elevation shown in Figs. 8 and 9.

Fig'. 11 is a horizontal section taken on line 114-11, Fig. 8. n

Fig. 12 is a perspective view of another niodied form of chaplet embodying my invention.

Fig. 13 is a central horizontal section through thesame.

F ig.y 14 is a perspective view of a still further modified form of chaplet constructed according to my invention.

Fig. 15 is a central horizontal section through the same.

Fig. 16 is a perspective view of a chaplet constructed according to my invention and having a single bearing member.

Fig. 17 is an inverted perspective view of the chaplet shown in Fig. 16.

Fig. 18 is an inverted perspective View of the lower portion of the leg ofthe lastmentioned chaplet showing the same before being completely formed.

Fig. 19 is an inverted enlarged section taken on line 19-19, Fig. 17.

Reference being had to the drawings in detail, similar reference numerals indicate similar parts in the diiierent figures.

:in Fig. 1 I have shown a mold for casting a cylinder, the reference numeral 20 indicating the drag portion of the mold and 21 the cope portion thereof, each portion having a semi-cylindrical depression formed in the tamped sand thereof so arof the chaplet ranged that they form a cylindrical casting 1.

space in which a cylindrical core 22 isplaced and spaced from the surrounding walls of the two mold portions, the core being held spaced from said walls by my improved chaplets 24.

The iii-gate or sprue designated'by thev numeral 25 is formed in the sandof. the mold so as to deliver the molten metal into the casting space at any suitable point.

Reference being now had to Figs'. 2 to-t inclusive, my improved chaplet is formed from a blank such as shown at 26, F ig. 2,

having notches 27 extending inwardly .fromk opposite longitudinal edges, thus forming' three parts 2S, 29, 30 of equal widths, the

end parts' 28 and 8O being connected to the intermediate part by narrow connecting members 31 which are continued into the intermediate part 29 by forming incisions into said intermediate part from opposite ends thereof in line with the edges of said connecting members. This blank is bent along the parallel dotted lines 32, and the end parts 28 and 30 are bent alon the dotted lines 33. The bending of the intermediate part along the dotted lines` 32 converts said part into channel shape or form and when bending the end. parts 28 and 30 along theldotted lines 33, saidend parts are forced laterally in the same direction tov cause the narrow connecting members 31A to beA bent into substantially` ogee shape, thus enabling the end pants to'be placed centrally at opposite ends of` the channel shaped intermediateA part. y

In. this manner the chaplet 24 shown in Figs. 3 and 4 is formed. This chaplet comprises two imperforate bearing members 34, 35 which were the end parts 28, 30 ofl the blank, the central,v supporting member 36- which was the intermediate part 29 of the blank, and the ogee shaped connecting parts 377 which werel the connecting members 31 of the blank. Said connecting parts 37 eX tend from point near the center of the support 36 outwardly to two corresponding edges of the bearing parts 34, 35 and have their longitndinalk edges free or disconnected from other parts` of the chaplet whilev its opposite ends are directly connected to said bearing members support, respectively. By reason of opposite longitudinalV edges of the connecting parts37. being disconnected from other parts of the chaplet these connecting parts are i non-supporting, by which is meant that they do notserve to support the bearing members as these receive support solely from the supporting member. The chaplet is therefore constructed of one piece of sheet metal and` has a cent-ral supporting member integral with the opposite bearing members, the means of connection, between the supporting members and bearing membel? being the ogee vconnecting part 37, the inner ends of which are connected to the supportv at a point centrally between the ends thereof with an imperforate bearing member, or members, a much better bearing is provided ,thanhas heretoforebeen possible ina chaplet whose support is' arranged centrally of the bearing member, or members, asthe case may be g at thel same timevthe tendency of sand from the mold working through openings or spaces in the bearing members is entirely eliminated, thereby assuring cleaner castings thanheretofore possible when using chaplet's having central supports with openings in the` bearing members.

ln the modification shown in Figs. 7 to 11, the chaplet isformed from the blank shown in Fig. 7, which has thegend parts 38,

and saidl Byy providing a chaplet,

39, an intermediate part 40 and connecting members 41 for connecting the end parts 38, 39 with said intermediate part 40. This blank is substantially of the same outline as the blank shown in Fig. 2, with the eX- ception that the connecting parts 41 are wider and the intermediate part is adapted to be bent along the lines of the edges as said connecting parts, the end parts 38 and 39 being bent upon the connecting parts in the same manner as indicated ink Fig. 2. A cha'plet formed from this blank has the two bearing members 42, 43, a central supf port 44, and the connecting parts 45.l This cha-piet, however, differs from the preferred construction shown in Figs. 3 to 6, in that its support is not of channel shape in cross section, as thev connecting members 49 are connected to the edges of opposite edges of the support, as at 46. f

Themoditication shown in Figs. 12 andl 13 is formed from the blank shown in Fig. 7 without bending the intermediate part v40 upon itself.

end parts 38, 39 are bent along the extreme ends of theconnecting parts 41, said in forming a chaplet of, thisV kind from the blank shown in Fig.l7, theconnecting parts being bent into ogee shape,-

so that the opposite side portions of the intermediate part 4() will assumeI a central position between the two endl parts 38,39.,v

and when completed, this chaplet has twok bearing members 47, 48 anda straight lined support 49 connected at a point midway between said bearing members to the ogee shaped connecting parts 50, which were the connecting members 41 of the blank shown in. Fig. 7.

.lny the modification shown in Fig. 14 l have provided two bearing members 51, 52, the supporting member -53 arranged cen,- trally between said bearing members, and injlieu ofY havingv the connecting parts er:- tending centrally from the supporting member, as in the preceding figures, these connecting parts are increased in number and extend 'from opposite edgesof the support ingl member, as at 54, said connecting membersbeing designated by the numeral 55.

ln the preferred construction` and `the,

modifications` lthus far described, a support.`

is arranged 'centrally between two flat bears" ing membersk at the top andbottom ofthe chaplet, and by means of suitable connecting parts or members formed` integral with the support and the bearing members, the support is.l connected centrally betweenY its ends with the edges of the bearing members,

preferably with corresponding edges thereof. The bearing members, in each instance, rest against the ends ofthe support but are unfastened from the support except through the` mediumA of the connecting parts or members, ln the modification shown in Figs. 16

to-l9, I have shown a chaplet constructed according to my invention embodying only 'a single bearing member` and a lengthened support or stem, this chaplet being used by inserting the support or stem into the sand in the drag portion of the mold, and in some cases into the cope portion of the mold. In this construction the bearing member designated by the numeral 56 is supported by and connected to the support or stem 57 in the same manner as provided for in Fig. 8, there being, however, only a single connecting member 58. The stem is of channel shape in cross section and has one wall thereof severed along its point of connection with the remaining walls thereof, said wall being extended beyond the adjacent ends of the remaining walls so as to provide the necessary length of metal for bending the connecting portion 58 into ogee formation so as to bring the bearing member 56 centrally against the upper end of the stein.

The opposite end of the wall having the connecting member 58 bent therefrom is made slightly longer than the two remaining walls of the stem, and the end of said wall is bent upon itself, as at 59, while the ends of the two remaining walls are bent upon themselves and over the bent portion 59, as at 60, thus closing the lower end of the stem.

While I have shown the bearing members of the preferred construction and the modifications thereof flat, it is apparent that these may be made concavo-conveX, or may be otherwise formed, and that although I have shown such bearing members of square outline they'may be circular or given any other desired outline without Adeparting from my invention. I am aware that a chaplet having two bearing members and a supporting member is not broadly new, but in each instance so far as known, the support ing member is not centrally'positioned between the bearing members and certain portions of the bearing members overhang the supporting member considerably more at one point than another, with the result that considerably heavier gauge metal is required than with a construction such as I provide and in which the bearing members are positioned centrally with respect to the supporting member. This feature of my invention in addition to the novel construction thereof is believed to be new and novel and permits the use of comparatively light gauge metal while possessing considerable strength and rigidity, which is only possible to acquire by the usev of considerably heavier material when constructed as now known.

Having thus described my invention, what I claim is l. As an article of manufacture, a chaplet comprising two spaced imperforate bearing members, and a supporting member integral therewith and arranged centrally between said bearing members, said support-l ing member lbeing spaced from all edges of said bearing member.

2. As an article of manufacture, a chaplet composed of two spaced bearing members, a

supporting member centrally between saidv member, a support in contact at one endA thereof with said bearing member, and connecting means having free longitudinal edges and its opposite ends connected with said bearing member and said support, re-

spectively.

4. As an article of manufacture, a chap let having a bearing member, a supportengaged centrally by said bearingmember, and

connecting means connecting said bearing member with said support a distance from the end thereof enga-ged by said bearing member.

5. As an article of manufacture, a chapand connecting means connecting said support at a point a distance from the end thereof engaged by said bearing member with one edge of said bearin member.

7,. As an article of manufacture, a chaplet comprising two spaced bea-ring members, a support .having its ends engaging the iiiner faces of said bearing` members, connecting means extending from a point spaced from the ends of said support'to said bearing members.

8. As an article of manufacture, an integral chaplet formed of sheet metal and comprismg two spaced bearing members, a support arranged centrally between saidbearing members, and connecting members eX-l tending from said support at a point between its ends to corresponding edges of said bearing members.

9. As lan article of manufacture, a chaplet constructed from sheet metal having two spaced bearing members, a substantially channel-shaped support, and connecting members extending from one of the walls of said channel-shaped support between the v ends thereof and corresponding edges of said bearing members.v

members bent outwardly from a point between said sicle portions midway between said bearing members, each connecting-member having connection with one of the edges.

of edo-h ot said bearing members.

In testimony whereof I affix my signature.

JOHN 7., BRADLEY.

10. As an article of manuiature7 a chapletI formed from a single piece of sheet metal and comprising substantially Hat top and bottom bearing members, IafsuqJpo-ir,in mem- 5` ber having two spaced side portions with opposite enclsof each side portion in Contact with said bearing members, und connecting

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