US553098A

US553098A - Archibald brake

Info

Publication number: US553098A
Authority: US
Publication date: 1896-01-14
Anticipated expiration: 1913-01-14

Description

' (No Model.) 2 Sheets-Sheet 1.

A. BRAKE. CASTING BRAKE SHOES.

No. 553,098. Patented Jan. 14,1896

(No Model.) 2 Sheets-Sheet 2.

A. BRAKE;

V CASTING BRAKE SHOES. No. 553,098. Z Patented Jan. 14, 1896.

WLfi eeS-S es 4 Iver (for 2 p 1 {Z z I JIM/W04 fim UNITED STATES PATENT, FFlCEt ARCH IBALD BRAKE, OF TORONTO, CANADA.

CASTING BRAKE-SHOESa SPECIFICATION forming part of Letters Patent No. 553,098, dated January 14, 1896.

Application filed December 21, 1894 Serial No. 532,611. (No model.)

To [all whom it may concern:

Be it known that I, AROHIBALD BRAKE, of the city of Toronto, in the county of York and Province of Ontario, Canada, have invented a certain new and useful Improvement in Casting Brake-Shoes; and I hereby declare that the following is a full, clear, and exact description of the same.

In the manufacture of brake-shoes the cost of the manufacture is considerably higher than what it should be, owing to the present complicated, slow, and tedious method of arranging the molds for casting the brakeshoes, and this invention relates to a certain new and useful means whereby a considerable saving of time in the construction of molds can be effected, with a consequent saving in the cost of manufacture of the brake-shoes; and the invention consists essentially inarranging a series of shoe-patterns on a bar and providing a drag of suliicient size to receive the series of shoe-patterns and fitting the drag with a metallic cope which will serve the dual purpose of a followboard and cope, in order that the follow-board may be entirely dispensed with in the con struction of the molds and a saving effected of approximately two-thirds of the molders time, the invention being hereinafter more fully set forth, and more particularly pointed out in the claims.

In the drawings, Figure 1 is a perspective view of the box. Fig. 21s a perspective view of the drag with the shoe-patterns arranged and tamped therein. Fig. 3 is a perspective view of the drag and mold cavities. Fig. at is a perspective view of the cope. Fig. 5 is a detail perspective view showing one of the openings in the cope. 6 is a detail view of the metallic bar B, illustrating the projections on the under side thereof.

Like letters of reference refer to like parts throughout the specification and drawings.

The drag A is of ordinary size and shape. Supported in the drag A is a bar B, to which are fastened a series ofshoe-patterns 0. Between each adjacent pair of shoe-patterns O is an interval D, and between the under side of the shoe-patterns O and the bottom of the drag A is the usual space for sand. The intervals D between each adjacentpairot' shoepatterns G are of auniform size, and between the ends of the shoe-patterns G and the sides of the drag A are spaces F F, respectively, and between the outer sides of the end shoepatterns and the ends of the drag A are spaces G G, respectively.

Connected to each end a of the drag A is a lug H, and extending upwardly from each of the lugs H is a pin I. The lugs H are located substantially at the middle of each end a, and the pins I pass through the ends of the bar 13, in order that the bar may always be in its proper position and the shoe-patterns in the correct position within the drag.

Fitted to the top of the drag A is a metallic cope J. Each end j of the cope is provided with an outwardly-extending lug K having the pins I passed through them when the cope is placed on the drag.

The metallic cope J completely covers the top of the drag A, and the under side of the cope J is curved to correspond with the curvature of the shoe-patterns G, in order that the under side of the cope will fit snugly against the top of the shoe-patterns and make a perfect hearing for the molding-sand packed into the spacesDbetween the shoe-patterns, so that a perfect clearance will be formed at the top of the spaces D for the removal of the shoe-patterns O. I

In the top of the cope J are a series of open ings L, which correspond in size and location with the size and location of the shoe-patterns C, and between each adjacent pair of openings L is ametallic bar or strip than (1 these metallic strips correspond in size and location with the size and location of the spaces D between each adjacent pair of shoe-patterns 0. Between the extreme edge -j of the cope J and the openings L is a metallic strip N corresponding in size with the space F, and between the opposite edge j is a metallic strip 0 corresponding in size with the space F, and at each end of the cope J are metallic strips P correspond ing with the spaces G G to form aperfectbearing for the molding-sand in the spaces F F and G G. Surrounding each of the openings L is an upwardly-extending metallic flange in order that there will be suificient depth to the metallic cope J between the top of the flange Q and the under side of the cope J to receive and securely hold the molding-sand within the openings L.

When it is desired to employ chills inconjunction with the cope one side'of eachof the openings L is fitted to receive a metallic plate R. I To each of. thcplates R are, connected a series of chills S. 1' These chills S may be of r any suitable size or shape in order to give the I interchangeable, andby this means make style of chilled shoe, and also'by securing the chills to a plate whichis reinovably connected to the cope it is possible to entirelyremove v the chills and cast a softaneta'lshoe.

In theopcration ofthe invention the shoe patterns 0 are placedwithin the drag A. r The cope .l is thcnfitted to the dragi-land the box is turned upside down. cThe'molding sandis piaced in thcboxfromthennder side of the dragA andis packed into the spaces Dbetween the shoe-patternsf) and intothe spaces:

F F and spaces G'GQ'and, into the bottom of I the drag-,the cope J remaining in place and making a perfect bearin g on: ali of the mold I ingsand in thespaces; Afterthe molding-i sand has been. packed into the, spaces D and spaces G G and the bottom of the box is filled 1 level with the loweredgeof thedrag thc box is turned upside; down; After the boxqhas been turned upside down the moldingesandis filled intothe openings L in thecopc J, theshoe-patterns C making a perfect bearing for the bottom ofthc molding-sandin the open-.

,ings L. When the openings L have been running into the spaces Z), or recesses formed in the walls between the molds in the drag by the pattern-bar B, a metallic plate or bar B, the projecting ends of which are shown in Fig. 1 of the drawings, is arranged across the middle of the cope. This metallic bar B has formed on it at proper distances a number of downward-extending projections, as shown in Fig. 6, which are counterparts of the spaces Z) or recesses formed in the walls between the molds, and are designed to accurately fill these spaces. The metallic bar B, of course, is arranged in the cope with the under face thereof even with the under face of the sand, and so that only the projections extend below the sand to fit in and fill the recesses in the partition-walls of the molds. In the sand of the mold are formed runners or ways 0, made in the usual or well-known manner, through which the melted metal finds its way into the molds, The metal then flows into each of the spaces left by the shoe-patterns t.

thespaccs left by theshoepatterns C. Above I isone of the openings L, and as the molding -sand in the openings L is level with the un-' der side of the cope J the metal'will rise in the spaces left by the shoe-patterns until it comes in contact withthe bottom of the sand in theopcningsll. "The metallic strips M are above the sandiwal-lsll between themold f cavities and form a tight contact with the sand walls. 7 It might also bestated that when packing the sand into the box whileithe shoepatterns Garewithin-the drag the cope 1 forms a perfect bearing on all the moldingsand within the drag A and allows of a per- 'ie'ct clearance for the removal of the sh oe J with a series of chillsSit is possible bOCllll-l the brake-shoes at any desired point.

: Having thus fully describedmy'invention.

whatlclaim'as new, and dcsi're to secure by Letters Patentis J 1 l, A molding --apparatus, comprising the drag, a pluralityot patterns 'mounted on a" vided with 1 openings registering with the I mcld-patterns in the drag, anda metallic bar I arranged across the cope and provided with proji'actionsito set in recesses in thesandevalis 1 of themolds, substantially as'specified;

2. A molding apparatus comprising a drag having vertical semi-circular gate-pieces formed thereon, a cope to set on the drag and serving the dual purpose of a follow-board and a cope, and provided with semi-circular gatepieccs registering with the gate-pieces on the drag, and a plurality of patterns, mounted on a common support, in the drag, substantially as described.

3. A molding apparatus comprising a drag having vertical semi circular gate pieces thereon, a cope to set on the drag and to serve the dual purpose of afollow-board and a cope, and provided with semi-circular gate-pieces to register with andclose'on the gate-pieces on the drag, and formed with openings, chills supported against the walls of the openings. a plurality of patterns in the drag and a support common to the patterns, substantially as described.

a. The combination with the drag, of a flanged cope to set over the drag, and formed with openings having vertical surrounding flanges extending above the upper surface of the cope, and seats in the walls thereofiand chills secured in the said seats, substantially as and for the purpose specified.

Toronto, October 8, 1894,

A. BRAKE.