US450083A - Type-mold - Google Patents

Description

(ModeL) 2She ets--Sheet 1. T. MITCHELL 8: J. MILNE.

TYPE-MOLD. No. 450,083. Patented Apr. 7, 1891.

5 Y I WITNESSES: INVENTORS ATTORNEYS 114: News rcrznu cm, PNOTO-LITMD, wmmevqn, o. b.

( Model.) 2 Shets Sheet' 2. T. MITCHELL & J. MILNE.

TYPE MOLD. v Patented Apr. 7 1891.

WITNESSES:

By ATTORNEYS UNITED STATEES l PATENT 7 OFFICE.

THOMAS MITCHELL OF BROOKLYN, AND JOHN MILNE, OF LONG ISLAND CITY, NEW YORK.;

TYPE-MOLD.

SPECIFICATION forming part of Letters Patent No. 450,083, dated April '7, 1891. Application filed December 5, 1890- Serial No. 373,629. (ModeL) To all whom it may concern.-

Be it known that we, THOMAS MITCHELL, of Brooklyn, in the county of Kings and State of New York, and JOHN MILNE, of Long Island City, in the county of Queens and State of New York, have invented a new and Improved Type Mold, of which the following is a full, clear, and exact description.

The object of this invention is to provide a simple and practical type-mold, whereby the type produced will be provided with letters or figures on each end of the same as they are separately molded in the device.

To this end our invention consists in certain features of construction and combinations of parts, which are hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, 1n which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of the mold in closed condition. Fig. 2 is a side elevation, partly in section, taken on the broken line 2 2 in Fig. 1. Fig. 3 is a transverse section taken on the broken line 3 3 in Fig. 2. Fig. 4 is a front end view of parts in advance of theline i 4 in Fig. 1, with the die-holding spr ngs removed. Fig. 5 is a perspective View of the forward end of the mold with the cope-bars raised; and Fig. 6 is a side elevation of the mold, the base being broken away.

The base-block A is metallic, and of proper dimensions to receive and support the typeforming devices upon it. At the rear end of the base-block A the upright bracket B is attached by the set-bolt a, said bracket having parallel upright limbs B, wherein the setscrews 12 are' oppositely inserted, these having their inner ends b cone-pointed for an engagement loosely with other parts that will be described in their order.

Upon the base-block A, at a proper point intermediate of its ends, a saddle-block O is secured by screws 0, which block 0 is provided with two upright parallel guide-plates O, and on the upper faces of said guideplates the forwardly-projected cap-plates O are attached by the screws (1. There is an ofise't or vertical shoulder 6 formed on the top surface of the saddle-block C, slightly in advance of the front vertical edges of the There is a stub-plate D provided, which is 7 preferably made rectangular and rearwardly slotted a suitable distance, which plate is clamped between a keeper-block E and a flanged nut E, that is engaged by the screwbolt f, which is adapted to bear with its head upon the top of the stub-plate and pass down through the slot h in the stub-plate. The keeper-block E is laterally flanged to loosely embrace the sides of the stub-plate D, and is cupped at opposite points to receive the conical ends I) of the set-screws b, and thus adapt the stub-plate D to vibrate on said center points.

The right angle produced at e on the saddle-block O affords a horizontal face and a vertical wall for the formation of two sides of a type-body, the two other side walls of the four-sided mold 0 being formed on two copebars F G. These bars are rectangular in cross-section and of the same width and thickness, both having a transverse offset t' formed at a proper distance from their front ends, which offset on the lower surface of the copebars is exactly equal in degree to the height of the shoulder at .e' on the saddle-block C. The bar F is secured rigidly at its rear end to the lower side of the stub-plate D and in a plane parallel to itsedges. Aside of the 00136- bar F the mating cope-bar G is pivotally attached at its rear end to the lower side of the stub-plate D by the set-screw bolt 70 and nut It. From the above-described construction it will be seen that the cope-bars F and G can be swung vertically, as shown in Fig. 5, and dotted lines, Fig. 6, and that the copebar G can also be swung laterally, as shown in dotted lines, Fig. 1.

Upon the outer side faces of the cope-bars F G, at their front ends, the cheek-plates H are attached by screws, which plates serve as auxiliaries to the guide-plates C, contributing to hold the cope-bars aligned upon the saddle-block 0 when said bars are in folded adjustment, the cheek-plates having a sliding engagement with the true parallel sides of said saddle-block when the bars are lowered'to form a mold,as is represented in Fig. 2. A sufficient space is afforded between the vertical edges of the cheek-plates H and adacent similar edges of the guide-plates 0', so that the die-bars I may be loosely inserted between said edges on each side of the copebars F G, said die-bars .consisting of rectangular billets of metal, equal in dimensions and of sufficient length to secure a good bearing upon the sides of the cope-bars, saddleblock, and base-block, as shown in Fig. 3. The die-bars I are removably held in position upon the pieces mentioned by the spring-clamp J, which consists of a single strip of elastic met-a1 having its ends tapered, as shown in Fig. 1, and bent to produce two loops, as at J, in Fig. 3, the center portion between the loops having a seat within a cross-channel in the lowerface of the saddle-block 0, whereby the ends we are located in such a relative position with regard to the cupped depressions n in the die-bars that the resilience of the spring ends will be exerted to retain the die-bars in position with their top ends forced against the cap-plates C From the position given to the die-bars I their transverse centers will be directly opposite the ends of the rectangular transverse channel, afforded by the shoulders e and 2' when they are-correctly separated by the longitudinal adjustment of the cope-bars F G, which is effected by the change of position of the stub-plate D. Consequently the indentation of any letter or figure of a propersize in the inner face of each of the die-bars will, if

correctly located, form a letter or figure upon each end of a type cast in the mold formed, as has been described.

There is a small longitudinal rib U formed on the face gof the saddle-plate O, whichprojects into the matrix 0,-said rib being embedded at other points in a mating groove formed in the cope-bar above it, as shown in Fig. 3, the rib being intended to produce the usual nick in the side of the type when molded.

For the introduction of molten type-metal the type and pouring-gate, each type having a letter or figure on each end.

The base-block A may be provided with an integral bracket to take the place of the at tachable bracket B, and the saddle-plate 0 may also be made integral with the baseblock, if preferred, and the cheek-plates H may be formed on the side of each cope-bar and finished with them, the detachment of these pieces being made to facilitate construction, but is not imperative, as provision can be made to construct the device and avoid the separation of the parts named.

It is evident that any alteration of form desired maybe made in regard to the letters or figures by substituting different die-bars, the length of the type-bodies always remaining the same.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. The combination, with a base-block cut to afiord two sides for a type-matrix and two swinging cope-bars formed to afford two other sides to said type-matrix, and having a gatechannel between said bars that intersects the matrix, of two die-blocks removably held against the open ends of the type-matrix, substantially as set forth.

2. The combination, with a base-block having a shoulder on it for the formation of two sides of a type-matrix and a vertical bracket at one end of the'base-block, of two cope-bars on a stub-plate which is pivoted between limbsof the bracket to swing upward. one cope-bar pivoted to swing laterally, the other bar provided with a vertical gate-aperture, and both cope-bars shouldered to form the other two sides of the type-matrix, substantially as set forth.

3. The combination, with a base-block, a bracket thereon at one end having two parallel vertical limbs, set-screws in said limbs having aligned cone-points, a stub-plate longitudinally movable on a keeper-block which is loosely engaged by the set-screws of the bracket-limbs, and a clamping bolt and nut to hold the stub-plate and keeper-block together, of a saddle-plate having two guideplates on its sides and a transverse shoulder on its top face, forming two sides of a typematrix, a rigidly-secured cope-bar and a laterally-swinging cope-bar 0n the stub-plate, both bars having aligning transverse shoulders formed on their lower sides, which produce the other sides of a type-matrix, two removable die-bars which align their moldingfaces with the ends of the type-matrix, and a double-bowed spring that movably holds the die-bars in place, substantially as set forth. I

THOMAS MITCHELL. JOHN MILNE.

Witnesses:

' WM. P. PATTON, O. SEDGWICK.

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