US1079550A

US1079550A - Means for holding inserts in place in molds.

Info

Publication number: US1079550A
Application number: US73718412A
Authority: US
Inventors: Joseph O Harris
Original assignee: American Brake Shoe and Foundry Co
Current assignee: American Brake Shoe and Foundry Co
Priority date: 1912-12-17
Filing date: 1912-12-17
Publication date: 1913-11-25
Anticipated expiration: 1930-11-25

Description

J. 0. HARRIS. MEANS FOR HOLDING INSERTS IN PLACE IN MOLDS.

APPLICATION YIIBD DEO.17, 1 912.

Patented Nov. 25, 1913.

2 SHEETSSHEET 1 J. 0. HARRIS HULDING INSERTS IN PLACE IN MOLDS.

MEANS FOR APPLICATION FILED DEC. 17, 1912. 1,079,550.

' Patented Nov. 25, 1913.

2 smmws simn'r z.

UNITED STATES PATENT onrion.

JOSEPH 0. HARRIS, or COLUMBIA HEIGHTS, MINNESOTA, ASSIGNOR, BY MEsNnns SIGNMENTS, T AMERICAN BRAKE SHOE & FOUNDRY comma-NY, OF MAHWAH, NEW JERSEY, A CORPORATION OF NEW JERSEY.

039 559 v Specification of Letters Patent. Patented NOV, 25, 1913. Application filed December 17, 1912. Serial No. 73?,184.

To all 10. 1 0m it may concern 'Be it known that I, JOSEPH O. HARRIS, a citizen of the United States, and a resident of Columbia Heights, in the county of 5 l noka and State of Minnesota, have made and invented certain new and useful Im- '6 I provements in Means for Holding Inserts in sectional mold for producing a brake shoe 6 Place in Molds, of which the following is a specification. i y invention relates to the manufacture 0 cast metal articles having, an insert face of the same shown being that in contact with the table of the moldin j machine as tl section is formed; Fig. is a mold being equipped with my nngiroyed means for holding the steel back for t eshoe eferring to the drawin the reference numeral 7 designates the'tafile of a molding machine, upon which the cope 8 of a sec= tional flask is placed, preparatory to filling t c same with sand to form one part of a sect1onal n1old in which a brakeshoe or for producing brake shoes, although it is capable of use in other arts and in the mann= same is cast, although it is e ually applicable for t e'purp'os'e of holding inserts to be em- 25 bedded in articles of other and various kinds.

limited in its application to the specific art referred to.

The upper surface of the tablefl deter= mines the contour of the lower face of the up per portion of the mold after the cope 8 has en filled with sand and properly rammed, and 9, 10 are blocks supported from a reciprocating support 11, which is a part of the molding machine, the blocks being movable through openings formed in the table 7, said blocks'being in their upper position illustrated in Fig. 2, whilethe cope 8 is be ing filled. with sand, after which they are lowered preparatory toremoving the up er part of the mold thus formed from the ta 1e of the molding machine. The purpose of these blocks is to form recesses l2, 13 ln'the forming a part of this application, and in such variations and modifications thereof 35 as Will be obvious to those skilled in the art to which my invention relates; my invention eing in the nature of an improvement in molds patented in etters Patent N O. 40 1,016,273, Feb. S, 1912, to Harry Jones.

11 the drawings wherein the preferred and, when molten metal is poured into the mold during the process of casting, the same flows into therecesses 12 and thereby provides projecting abutments upon the back oi the shoe produced, and into the recess 13 to provide, in connection with a wrou ht vertical plane indicated by. the line 2*2, -Fig. 1; Fig. 3 is a view showing a detail; 50 ,Fig. 4 is a View showing the upper part 01' ope ofja sectional flask filled with sand to form part of a sectional mold, a steel back being shown as secured in position, the surfic embodiment of my invention illustrated, an attaching lug y'means of which the brake shoe produced may be supported-from a brake head.

"1e reference character 14 designates one or more supporting members, the. number of facture of other devices and therefore not '75 metal lug carried by theinsert ln the speci-LIOQ ing memb obvious that after supported'by "flexible insert supporting element such members ei'nployed being obviously dependent upon the character of the insert to be supported, and which supporting members may be located at any convenient part of the flask, although as shown in the drawings they are located about mid-way of the height of the cope as to be our bedded in the sand of the mold after the cope has been filled with sand. The ends of these supporting members are shown as extending through holes in the sides of the cope portion of the flask, although it will be understood that the supporting members may be supported in any suitable way.

'The reference character 15 designates insert supporting elements embedded in the sand of the flask and which elements extend beyond the surface of the mold with which the molten metal comes into contact when themold is used, so that the said supporting elements may engage and support an insert to be embedded in the article pro-' duced in the mold during the process of casting. These supporting elements are preferably in the form of wire loops con nected with or supported from the supportv er 141 above referred to, which wirebeing flexible, as will be understood, may be bent into engagement with the insert tohe supported within the mold.

The vfree ends of the wire loops 15 extend through holes 16 provided in the table? of the molding machine, from which it will be the cope has been filled with sand, the same properly rammed, and removed from the molding machine, the free ends of the wire will be left projecting beond the surface of the sand in the copc which was in contact with the table 7. These free ends project from the surface of the'cope at the points 17, Fig. 4, located a distance apart corresponding with the width of the insert to be supported by said insert supporting member or wires.

In the specific embodiment of my invention illustrated in thc drawingz s I have shown a steel back 18 of a brake shoe as although it will be understood that my invention may be adapted for the purpose of holding inserts of any kind within molds designed to produce any specific article of manufacture In the embodiment of my invention illustrated, the free ends of the are 10- catcd a distance apart such that the steel back l8 above referred to may be placed betwccn them, after which the free ends of the wire are bent over the insert and twisted togcthcr as v hown at l5 Figs. l to (l. The siccl back in will thus be supported from the insert snp mrting members with one of its surfaces in cont-act with the surfaces of the sand cl" the rope or other inold section, although it. will be undcrstoodthat the inlcciated wrought metal theinscrt supporting elements,

tiou within the mold.

sort supporting member is equally well sorts at a distance from the inner surface 0 the mold if the article to be produced necessitates that the insert be located within, as distinguished from at. the surface of the article produced.

The insert 18 is provided with a centrally v lug 20, and, as hereinbefore explained, the block 10 is provided for the purpose of forming a recess in the sand of the cope into which rsoltcn metal .may flow to provide, in connection with the lug 20, an attaching lug for securing the brake slice to a brake head. To that end the projection 10 is provided with end ex-* tending portions 21, Fig. 3, which form recesses for receiving the ends of a core 22 which extends through the lug 20 in the manner illustrated in Figs. 5 and 6, and also with side extending portions 23 which form recesses to permit the molten metal to flow up and around the sides of the key 20. It will beunderstood, however, that the form of the key lug is not an essential feature of my invention, and that in cases where the same is employed for the purpose of producing brake shoes the form of the block 10 will be yaried to correspond with the particular form of lug with which the shoe is to be provided.-

Fig. 6 shows a complete multiple part sectional mold of thc'form or type suitable for producing a brake shoe, the same being equipped with a form of'my invention suitable for holding a steel back in place within a mold, so that the same becomesembedded in the rear face of'the shoe as the same iscast. The mold illustrated comprises the cope 8 above referred to, together with a nowel. or drug 24, the two parts inclosing a cavity 25 into which the'molten metal is poured as will be understood.

While I have referred 'to the element 8, and thesand contained therein, as forming the upper part of the sectional mold in which the shoe is formed, it will be understood that this" is not essential, and .thatthe sanie may be so placed as to form the lower or other portion of the mold, and also that.

the insert to'be embedded in the article to be produced maybe supported in any posi- Also, while I have referred to the mold as formed from sand, it will be understood that this term is to be understood as applying to and comprehending such materials as arecommonly known and used in foundry practice for the purpose of forming molds.

in view of the premises, it will be appreciated that I avoid the use of nails or similar holding dcviccs heretoforeemployed for the purpose of securing a steel back against the surface of a mold section, but which have been open to various objections, among which are that thenails are likely to pull out of the sand, as they are themselves unsupported, and that they have to be removed from the finished brake shoe before the same may be us'ed, as by cutting them off with a cold chisel. are likely to produce chilling, and, consequently, hard spots in the finished shoe, which results in the formation of grooves in the car wheel with which the shoe may be used. In using wire, as contemplated in my invention, the same is for the most part oxidized and burned by the time themetal has set, and, such slight rojecting pieces of wire as may remain in t e finished shoe do not require to be cut from a shoe as they will be broken off during the tumbling process to which the shoes are ordinarily subjected for the purpose of cleaning them.

Having thus described and explained my invention, I claim and desire to secure by Letters Patent:

1. I11 combination, a section of a multiple part mold having a supporting member embedded therein; and an insert supp rting element supported by said supporting m mber and embedded in said sectibn, and which supporting element extends beyond the S111- face of said sectionwith which the mO metal contacts when the moldis used and is flexible to such a degree that its projecting portion may be bent into engagement with an insert to be supported; said supporting elelnent being separate and distinct from. an

forming no part of .the insert to be supported, and the portion thereof which is embedded in said section forming no part of the article produced when saidsection is an insert to be ported,- and the used.

2. The combination with a foundr flask within which a mold may be forme of a supporting member supported from said flask; and an insert supporting element sup-- ported by said supporting member and adapted to be embedded in sand in said flask, and which supporting element extends beyond the surface with which the molten metal contacts when the mold is; used and is flexible to such a degree that its projecting portion may be .bent into engagement with supported; said supporting element being separate and distinct from and forming no part of the insert to be supportion thereof which is adapted to be embedded in the sand forming no part of the article produced in the use of said flask.

3. The combination with a foundr flask within which a mold may be forme of a sup orting member supported from said flask and an insert supporting element consupporting member and nccted with said adapted to "be embedded in sand in said flas tends and which supporting element exbeyond the surface with which the Furthermore, the nails.

molten' metal contacts when -mo isvused and is adapted to support an insert in position to be embedded in the article formed in the mold; Said supporting element being separate and distinct from and forming no part of the insert to be en porte and the portion thereof which is a. aptcd to be embedded in the sand forming no part of the article produced in the use hf said fl 4. The combination with a foundry flask within which a supporting member; and an in supp ting element in engagement with. Said sun porting member and adapted to be embeddied in sand in said flask, and which supporting element extends beyond the surface with which the molten metal C a l S w en the mold is used and is adapted to support an insert in position to be embedded in the article formed in the mold; said supporting element being separate and distinct from and formin no part of the insert to be supported, am? the portion thereof which is adapted to be embedded in the sand forming no part of the article produced in the use of said flask.

. '5. In combination, a section of a multiple part foundry flask; a table upon which said section may rest, and which table is provided with a hole; and an insert supporting element extending through the hole aforesaid in said table, and which element becomes embedded therein as the flask section is filled with sand.

6. In combination, a section of a multiple part foundry flask; a table upon which said section may rest, and which table is provided with a hole; and an insertsupporting element supported from saidflask section and extending through the hole aforesaid in said table, and which element becomes ,embedded therein as the flask section" is filled with sand.

7. In combination, a section of a multiple part foundry flask; atable upon which said section may rest, and which table is provided with a hole; and a flexible insert supportingelement su ported from said flask section and exten ing through the hole aforesaid in saidtable, and which element becomes embedded therein as the flask section is filled with sand.

8. In combination, a scction of a multiple part foundry flask; a table upon which said section may rest, and which table is provided with two holes, and a flexible looped supporting element, tend through the holes aforesaid in said table, and which element becomes embedded therein as the flask section is filled with sand.

9; In combination, part foundry flask; a section may rest, and which table is provid a section of a multiple ed with two holes; and a flexible looped intableupon which said the free ends of which ext sert supporting element supported from said Hennepin and State of Minnesota this 9th fiaslf section andlthe flree fenclls 01f ivhicl; eX- day of December, A. D. 1912. mm one t 11OUO1 eacl 0 tie 10 es zr'ore u said in said ttITJlQ, and which element be= JOSEPH HARLIS' 5 comes embedded therein as the flask section Vitnesses:

is filled with sand. S. M. MAS,

Signed at- Minneapoli's in the county of H. A. WHEELER.