US1015020A - Type-mold. - Google Patents

Description

J. E. HANRAHAN.

. TYPE MOLD.

. APPLICATION FILED JULY 23, 1909. RENEWED MAY 30, 1911. 1,015,020. Patented Jan. 16, 1912.

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Witness UNITED STATES PATENT OFFTC JOHN E. HANRAHAN, 0F BALTIMORE, MARYLAND, ASSIGNOR TO THE CHESAPEAKE ADDRESSING COMPANY, .A CORPORATION OF MARYLAND.

TYPE MOLD.

Patented Jan. 16, 1912.

Application filed July 23, 1909, Serial No. 509,085. Renewed May 20, 1911. Serial No. 628,564.

To all whom it may concern:

Be it known that I, JOHN E. HANRAHAN, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Type-Molds; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to type founding and has special reference to an improved form of mold for use in the casting of type. It is well understood among those skilled in the art that this mold in the usual construction is composed of separate sides and back pieces and that the matrix forms one end of such a mold. It is also well known that owing to the fact that the mold is thus composed of separate pieces great diliiculty is experienced in obtaining successive type having uniform dimensions throughout as well as that the type cast in such a mold are extremely liable to have fins projecting from the edges and corners, this being caused by the molten type metal working into the cracks in the mold between the various parts.

The object of the present invention is to construct a type mold of such character that repeated castings of type may be had therefrom, each of the type so cast being of uniform dimensions throughout. This object is accomplished by a novel formation of the matrix and mold and this formation preferably takes the shape of constructing the matrix, the top and sides of the mold as an integral structure.

WVith the above and other objects in view as will be hereinafter apparent, the invention consists in general of an integral structure forming the sides and back of a type mold together with certain other novel features of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically set forth in the claims.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure 1 is a vertical section through a mold constructed in accordance with this invention, the view showing the melting pot and lead pump as ordinarily used. Fig. 2 is a detail view showing the manner of removing the type from the mold. Fig. 3 is a detail perspective of the top,

sides and matrix of a mold. Fig. 4 is a detail perspective of a mold base.

The letter A in general indicates the melting pot with its accompanying lead pump and is to be taken as typical of any such device, since this melting pot forms no part of my invention. This melting pot A is provided with the ordinary nozzle 10 which leads to an opening 11 formed in the foot block 12 of a type mold and which is se-' curely attached by pins 13 to a casting table 14. To the upper edge of this foot block 12 is secured a member 15 which projects inwardly over the casting table, said member being attached to the block 12 by means of a suitable pin 16. Carried on the casting table 14: is a slide which comprises a central portion 17 and two side portions 18. These side portions are of less height than the central portion and the three portions are detach ably connected by means of suitable pins, the heads of which are shown at 19. The central portion 17 is of such width as to fit closely between the side walls 20 of thelintegral mold portion comprising these side walls 20 and the cap 21. Between these side walls is the matrix 22 and this matrix is so arranged as to contact closely with the top face of the slide member 17 when the mold is in position for casting. The slide member 17 is further provided with projections 23 for the purpose of forming the nicks in the type as well as to hold said type immovable while being freed from the'matrix in the manner hereinafter described.

In using this mold the members 17 and 18 forming the bottom of the mold are positioned on the casting table and the structure disclosed in Fig. 3 is placed thereon so that the sides 20 embrace the members 17 and rest upon the members 18, with the fixed matrix opposite the opening 11. The matrix with the sides and cap of the mold fixed thereto are pushed forward under the member 15 and are there held by any suitable means not deemed necessary here to be disclosed as it may be any of the means common in type casting mechanisms used for the purpose of holding the mold in position while casting. The mold having thus been positioned the lead pump is actuated and the requisite quantity of lead forced in the mold through the opening 11 so that the mold is entirely filled with the lead. When the type hasbeen cast the upper portion of the mold with the matrix fixed therein is drawn away from the foot of the mold and by reason of the projections 23 in the base of the mold the type which is here indicated at 24 in Fig. 2 will remain behind and may readily be sheared from the stem which forms in the opening 11 by any of the usual means.

It is found that with type cast in a mold of this description there is no variation in the width, length or thickness, but that all sides and cap of the mold integral and second by having the matrix fixedly mounted between said sides and fixedly connected to the cap.

Having thus described the invention, what is claimed as new, is

l. The combination with a mold base including an upstanding longitudinal rib; of.

a member held on said base and slidable therealong, including a pair of mold sides, a mold cap and a matrizgsaid sides, cap and matrix being fixed together.

2. In a mold for type, the combination with a base having projections and arranged to form a surface of a type and the nicks therein; of a member held on said base and slidable therealong, said member including a pair of mold sides, a mold cap' and a matrix, said sides, cap and matrix being integral.

3. The combination with a mold base including an upstanding longitudinal rib, of a member held on said base and slidable therealong, said member including a pair of mold sides, a mold cap and a matrix.

t. In a mold for type the combination with a base having projections and arranged to form a surface of a type and the nicks therein, of a member held on said base and slidable therealong, said member including a pair of mold sides, a mold cap and a matrix.

5. The combination with a mold base in cluding an upstanding longitudinal rib, of

a member on said base and having a mold cavity one side of which is formed by the said rib, one of the said elements being movable longitudinally with respect to the other.

6. The combination of a member having a mold cavity and a second member having a rib forming one side of said mold cavity and with respect to which rib the first named member is slidable.

7. The combination with a member having a mold cavity, of a member slidably related to the first named member and having a rib forming one side of the said mold cavity.

8. The combination with a mold base including an upstanding longitudinal rib, of a member on said base and having a mold cavity one side of which is formed by the said rib, said rib having a projection to form a nick in the type.

9. The combination with a mold base including an upstanding longitudinal rib, of a member on said base and slidable therealong, said member including a pair of mold sides, a cap and a matrix, the said rib of the said mold 'base entering the space between said pair of mold sides and forming one side of the mold cavity.

10.111 type moldlng mechanism a castlng table, a slide thereon, a foot block also on said table, a member secured to the foot block and spaced above the slide, and a mold member slidable on the slide and between the latter and the member which is secured to the foot block, said mold member having a mold cavity therein, one side of which is formed by the said slide.

11. In type molding mechanism a casting table, a slide thereon, a foot block also on said table, a member secured to the foot block and spaced above the slide, and a mold member slidable on the slide and between the latter and the member which is secured to the foot block, said mold member having a mold cavity therein, one side of which is formed by the said slide, the said slide having a rib extending intothe said side of the mold cavity,

In testimony whereof, I afiix my signature, in presence of two witnesses.

JOHN E. I-IANRAHAN.

Vitnesses JACK Q. H. SMITH, Jr., J. LERoY HOPKINS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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