US1146302A - Casting mechanism for typographs. - Google Patents

Description

C. H. BRASTED.

CASTING MECHANISM FOR TYPOGRAPHS.

APPLICATION FILED 0CT,28,1912.

Patented uly 13, 1915.

mirth srecrus am CLAIR H. LBASTED, CLEVELAND, OHIO, ASSIGNOR TO LUDLOW TYPOGBAPH COMPANY, OF CLEVELAND, OHIO, A. CORPORATION OF MAINE.

CASTING MECHANISM FOR TYPOGRAPHS.

masses.-

Specification of Letters'ratentf I Patented July 13, 1915.

Application filed October 28, 1912. Serial No. 728,056.

In casting mechanism for typographs the metal for forming the slug or line of type is generally kept in a .melting pot from which such metal is adapted to be supplied to the mold when occasion demands. To this end the pot is provided with a discharge spout through which the metal may thus be forced into the mold in the actual operation of casting. Naturally a tight fit requires to be made between the nozzle, that forms the end of this spout, and the face of the mold wherewith it is brought in contact and for this reason it is not only necessary that the surface of the parts in question be carefully machined so as to fit tightly together, but also that any particles of metal or other foreign matter should be removed or wiped from said surfaces.

The object of the present'invention is the provision of mechanism for thus wiping the nozzle of the casting pot, it being this part only that requires to be thus cared for in the Ludlow typograph, to which the casting mechanism illustrated more particularly pertains. In such Ludlow typograph a plurality of matrix bars are employed, such bars being longitudinally arranged in a trough and normally freely movable over a casting slot in such trough, so that by suitably composing, or distributing, said bars to bring over such slot any desired series of characters, a matrix for a type line, the Width of a column of printed matter, is formed. In the approved constructional form of such typograph, the trough, and thus the mold which cooperates'with the aforesaid slot in the casting operation, are

disposed horizontally, and the casting pot is brought with its nozzle against the under side of said mold. The general features of construction just set forth of course form no part of the present invention, the latter consisting of the means hereinafter fully described and particularly set forth in the claims.

The annexed drawing and the following description set forth in detail certain mecha nism embodying the invention, such disclosed means constituting, however, but one of various mechanical principle of the invention may be used.

In said annexed drawing, Figure 1 is a plan view of the casting mechanism of a typograph of the kind above referred to, showing my present improvements associated therewith; Fig. 2 is a sectional view of a detail onthe line 22, Fig. 3; while Figs. 3 and 4 are broken plan views, respectively illustrating in different operative positions, the parts that appear in Fig. 1.

The mold 1, over which the matrix bars (not shown) are assembled, appears stripped of its associated parts,owhereby it is adapt ed to be variously positioned incidentally to the discharge therefrom of the slug and the trimming of the latter. Similarly, the actuating mechanism for the casting pot 2, which is designed to cotiperate with the slot 3 in said mold in order to supply thereto the molten metal for forming the slug, has been omitted. For the present purpose such pot may be regarded as having simply an oscillatory movement in ahorizontal plane from the position of rest illustratedin full lines in Fig. l to the operative position illustrated in dotted lines in the same figure. Said pot is further given either a translatory, or oscillatory, movement in a vertical plane as Well, in order that its discharge nozzle 4, after being thus first brought directly beneath the mold, may then be elevated into close connection therewith. The detailed construction of the pot may, moreover, be disregarded, other than to note that'it is provided with a reclprocable piston, or plunger 5, which is suitably actuated in the registering position of the nozzle just referred to, to force the molten metal from the body of, the pot through the spout 4 and into the mold.

For the purpose of, wiping the face of .orms in which the the spout. This member is nozzle, or squirt plate 5, where such a ."qulckness of the movement rendering this possible. The relative elevation of the pctnozzle and said member is such that; upon oscillation of the latter, the padcarried thereby willbrush across the end of the nozzle.

Normally a tension spring 10 retains said member'6 in the inoperative position shownin Fig. 1, but an arm 11 carried by the pot is disposed so as to engage a shoulder 12 on the under side of said member and closely adjacent to its pivotal axis so as to swing ls'aid member inwardly and thus across the nozzle, upon movement of the spout toward the mold. By reason of the shoulder being thus closely located to the pivotal axis of the member, the movement just' described is a veryrapid one, being almost instantaneous, as is also the return of the member across the nozzle when the arm releases said member, as it does, immediately following the position of parts illustrated in Fig. 4, under compulsion of the spring 10. A double wiping movement is accordingly secured, and that entirely automatically, incidentally to the movement of the spout of the casting pot. A stop 13' serves to receive the impact of the member 6 upon its return to inoperative position, while a second, leaf spring 14: serves to guide the arm 11 into engagement with the shoulder 12 on the under side of said member.

The general modeof operation of the device has been indicated, it is believed, with sufficient fullness in. the preceding description of its construction. It will be under stood, of course, that the device is not limited in its application to the specific form of typograph hereinbefore referred to, but

may be used with others wherein a corresponding relation and movement of parts is found; furthermore, by a simple extension of the arm 6, such arm, or a duplicate thereof, may bereadily adapted for wipin the under face of the mold 1, instead 0 the upper face of the squirt plate 5. It should further be noted that the wiping movement of the arm 6 occurs just previously to the casting operation. There is hence no chance for the metal to chill in the nozzle after such wiping, orfor dirt to collect on its face. Other modes of-applying the principle of my invention may be employed instead of the one explained, change being made as masses distinctly claim as my invention 1. In mechanism of the class described,-

the combination of a slug-casting mold; a movably mounted pot for molten metal haying a spout adapted, in one position of said pot, to register with said mold; a member movably mounted adjacent to the path of travel of such spout and adapted to wipe the same; means normally retaining said member in inoperative position; and an arm carried by said pot and adapted to engage said member, the effect of such engagement being to move said member across such spout. v

2. In mechanism of the class described, the combination of a slug-casting mold; a movably mounted pot for molten metal having a spout adapted; in one position of said pot,'to register with said mold; a member movably mounted adjacent to the path of travel of such spout and adapted to wipe the same; a spring normally retaining said member in inoperative position; and an arm carried by said pot and adapted, upon movement of the latter, to temporarily operatively engage said member and then to release the same, the efiect of such engagement beingto' move said member across such spout in one direction, and said spring being efiective, upon release of said member, to move the same across such spout in the opposite direction.

3. In mechanism of the class described,

the combination of a slug-casting mold; a

movably mountedpot for molten metal having a spout adapted, in one position of said pot, to register with said mold; a member pivotally mounted adjacent to the path of travel of such spout and adapted to wipe the same; a spring normally retaining said member in inoperative osition; and an arm carried by said pot and said member. during a portion of the movement of said pot and thereupon release said member, the effect of such engagement beng to move said member across such spout in one direction, and said spring being effective, upon release of said member, to move the same across such spout in the opposite direction 4. In mechanism of the class described, the combination of a slug-casting mold; an oscillatorily mounted pot for molten metal .having a spout adapted, in one position of said pot, to register with said mold; a member pivotally mounted adjacent to the path of travel of such spout to wipe the same; a spring normally retaining said member in inoperative position; and an arm carried disposed to engage ltli by said pot and disposed to eng ge said lease of said member, to move the same member at a point near its pivotal axis duracross such spout 1n the opposite direction. ing a portion of the movement of said pot Signed by me thls 25 day of October, 1912.

and thereupon release said member, the ef- CLAIR H. BRASTED. 5 feet of such engagement being to swing said Attested bymember across such spout in one direction, JNo'. -F. 'OBERLIN,

and said spring being eflective, upon re- D. T. DAVIES.

Copies of this patent may be obta. ed for five cents each, by addressing the Commissioner of Patents;

Washington, D. G.

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