US1754340A - Insert-holding device for casting molds - Google Patents

Description

April 15, 1930; J. s. THQMP SON 13754,;340

INSERT HOLDING DEVICE FOR CASTING MOLDS Patented Apr. 15, 1930 fUNITED STATES PATENT OFFICE JAMES S. THOMPSON, OF NEW YORK, N. Y., ASSIGNOR TO THE AMERICAN. BRAKE SHOE ANDFOUNDRY GOMPANY, F WILMINGTON, DELAWARE, A CORPORATION *oagme a lmama filed. A rils, 1926, Serial No. 100,821. was and. this application filed June 28 1928. .Serial applicationis adivision of my application. Serial No. 100,821 filed April 9, 1926.

. 1 The invention relates to permanent molds for making castings, and particularly brake shoes, andits object isto provide novel means of simple construction for securing the parts to be embedded in the casting in fixed posltion in the mold cavity so that they will not bedisplaoed in closing the mold or in pouring-the metal. 1 l g a a In theaccompanying drawings illustrating a selected "embodiment of the invention,

.l-Figyl is alongitudinal sectional view. Fig. 2 is a transverse sectional view on the line 2+2 of Rig. 1 l f Fig. 3 is a top plan view of Fig. 1. Fig. 4 is a perspective view of the insert. Referring to the drawings the mold comy prises a drag member 4 and a cope member 5 having a mold cavity 6 formed therein and a pouring gate 7 associated therewith. The invention may be embodied in molds of different kinds andconstructions and therefore it will not be necessary to describe the mold in further detail. l

In the manufacture of brake shoes it is the general practice to embed a steel back 8 in the back of the shoe and a steel lug 9 in the lug of the shoe and these parts are generally assembled with a lug core 10. as a unit insert and suitably supported in the mold cavity preliminary to the casting operation. The object ofthis invention is to provide a simple and improved means for easily and quickly securing the insert in the mold and in fixed position so that none of the parts thereof will be displaced during the operation of the mold and the pouring of the metal. The ends of a looped wire 11 are passed down through openings 12 in the cope and through open ings 13 in the steel back and are twisted together at 14 beneath the steel back. The outer ends 12 of the openings 12 are enlarged to facilitate insertion of the ends of the looped wire. The loop is passed over a transverse support 15 mounted on a cross bar 16 fastened to the cope and this support is provided with a recess or indentation 15' to receive the looped wire, Fig. 2. The ends of the wire may be passed in a reverse direction INSERT-HOLDING DEVICE FOR CASTING MOLDS through the openings 12 with the looped part thereof engaging the back. and with its ends twisted above the support, if desired, but for a mold like that disclosed in my original application it is more convenient to twist the ends of the wire adjacent the steel back when the cope is in tilted or upright open position. A tensioning device is arranged to engage the legs of the loop for tightening the loop and clamping the insert tightly in place ion the cope, and this devicecomprises a lever Y 17 pivotedat 18 on the cross bar 16 having anoperating handle 17. A detent 19 of any suitable construction is mounted on the lever 17 to engage a toothed segment 20 mounted on. the cope. The openings 12 are conveniently and preferably located in alignment with the longitudinal axis of the mold cavity of a brake shoe and the pivot of the tensioning lever 17 is located between the openings and preferably in alignment therew th. Preparatory toinserting theloop in the openings 12 the tensioning lever should be swung to initial'position as shown in broken lines in Fig.3, so that when the loop is inserted it will straddle the lever. After the ends of the loop have been twistedthe lever is advanced to twist and tension the wire, as shown in full lines in Fig. 3, thereby tightly securing the. insert'in place-against so the cope sothat it will remain in fixed posi tion during the operation of the mold andthe pouring of the molten metal in the mold cavity, andbecome embedded in desired position in the casting. In advancing the lever as aforesaid, the detent will ride over the teeth of the segment 20,and after the casting operation is completed the handle 19' may be operatedto release the detent from the segment to permit the tensioning lever to be re a0 turned to initial position. a

My invention provides a simple means which can be easily operated for securing an insert in relatively fixed position in the cope of a moldso that it will notbecome displaced during the operation ofthe moldor the pouring of the metal and will be embedded in its predetermined position in the casting. Unless the insert is held tightly and securely in the mold cavity it may become displaced during the operation of the mold or during the pouring of the metal so that the back and the lug will be erookedly and unevenly embedded in the brake shoe casting. This is overcome by the use of my invention Which enables the operator to tie the insert fixedly in its proper position in the mold cavity so that the steel back and lug will be uniformly'lpositioned in the shoe casting.

have described the invention in a form which has been found satisfactory in actual practice in connection with a mold as described in my parent application, butthe invention is capable of being embodied in other forms and for use on other molds and I reserve the right to make all such changes in the form, construction and arrangement of arts as come within the scope of the follow- 1n claims.

claim:

1. A mold for making castings and comprising a cope, means for holding in vthe cope an insert to be embedded in the casting, and adjustable means operatively engaged with said holding means for tightening the holding means to securely hold the insert rigidly in position. v r

2. A mold'for making castings and comprising a cope, means for holding in the cope an insert to be embedded in the casting, said means passing through the-cope, and means pivotally mounted on the-cope and operative- 1y engaged with said holding means for causing the holding means to securely hold the insert rigidly in position in the cope.

3. A mold for making castings and comprising a cope, means for holding in the cope an insert to be embedded in the casting, and lover means on thecope for applying tension to said holding means.-

4. A mold for making castings and comprising a cope, means for holding in the cope an insert to be embedded in the casting, said mean assing through the cope, and lever means mounted on the cope and operatively engaged with said holding means for causing the holding means to securely hold the insort rigidly in position in the cope.

5. A mold for making castings and comprising a cope, means for holding in the cope an insert to be embedded in the casting, a lever mounted on the cope and operatively engaging said holding means for causing the the cope an insert to be embedded in the casting, and means on the cope for tensioning said looped Wire.

8. A mold for making castings and comprising a cope having openings therein, a looped wire passed through said openings and holding in the cope an insert to be embedded in the casting, the ends of said Wire being fastened together, and tension means engaging said looped Wire outsideof the cope for applying tension to the wire.

9. A mold for making castings comprising a cope, a looped Wire having its legs passed through the cope and its ends fastened together, said looped wire holding in the cope an insert to be embedded in the casting, and a lever passed through the looped wire outside of the cope and adapted to be oper atedfor tensioning the Wire to securely hold the insert rigidly in position in the cope.

10. mold for making castings and comprising a cope, a support on the cope, a lever mounted on the cope, a. looped wire straddling the support and lever and passing through the dope and holding in the cope an insert to be embedded in the casting, the ends of A saidwirebeing fastened together, said lever being adapted to be operatedto twist and tension the Wire, and means for holding the lever in adjusted position.

. JAMES s. THOMPSON.

holding means tosecurely hold the insert rigidly in position in the cope, and means for holding said lever in adjusted position.

6. A mold for making castings and comprising a cope having an opening therein, a wire passing through said opening and holding in the cope an insert to be embedded in the casting, and means on the cope for applying tension tosaid Wire.

7. A mold for making castings and comrising a cope having openings therein, a ooped wire in said openings andholding in

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