US2672974A - Mold for typecasting machines - Google Patents

Description

March 23, 1954 G w, cu ss 2,672,974

MOLD FOR TYPECASTING MACHINES Filed June 7, 1952 INVENTOR. GORDON' W. CURTISS ATTO/QN Patented Mar. 23, 195 4 UNITED STATES. PATENT OFF-m 2,672,974 MOLD FOR TYPECASTiNG MACHI NE S Gordon W; Curtiss; Atlanta. Ga ApplicationJune 7, icsasferial No. 292,283 3Claims. (Cl. 1 99-'- --92")' 1. This-invention relates to an improved mold for a-typecastingmachine, and more particularly to an improved mold to permit such machines to ca'stlarger type than has, heretofore been possible with machines of this type such as that manufacture and sold by Lanston Monotype Machine Com any, such machine being well known for many years by those skilled in the prior art. Representation of such a machine as to its basic construction and operation is tobe found in U; S. Letters Patent No. 944,405, issued December 28,

- to J. S. Bancroft and M. C. Indahl. Improvements thereto. are shown in subsequent Letters Patent, such as, for example, No. 1,193,346, issued August 1. 1916, to J. S. Bancroft and M. C. In'dahl; and the machine is now so well known in its commercial form that no detailed description is deemed'necessary. The object of thisinvention is generally to increase the capacity of the mold for typecasting machines of the type mentioned, whereby type of abnormally wide dimension set-wise may be cast.

Av particular obiect of my invention is to increase the capacity of the mold for typecasting machines of the. character mentioned to the extent of three times the capacity of the commercial machines casting 8 pt. type.

Another object of my invention is to provide improved construction of the mold blade carrier and the mold blade carrier forward travel stop.

Another object of my invention is to provide improved mechanism for typecasting machines which is simple in design, rugged in construction, inexpensive to manufacture, and by means of which the casting capacity of the mold is in creased up to threefold in machines of the class described.

Other and further objects and advantages of my invention will be apparent from the following description taken in conjunction with the accompanying drawings in which like characters of reference designate corresponding parts throughout the several views, and wherein:

Fig. 1 is a top plan view of a mold assembly embodying my invention.

Fig. 2 is a top plan view of the mold assembly shown in Fig. 1 with the shoe and guide removed.

Fig. 3 is a view similar to Fig. 2 but showing the mold in open position to form the casting cavity.

Fig. 4 is a right side view of the mechanism shown in Fig. 3.

Fig. 5 is a perspective view of a detail.

Fig. 6 is a bottom view of a detail.

In the embodiment chosen for purpose of illustration, certain of the machine parts shown being v 2. v of the construction well known in machines or the character set forth in the aforementioned patents, it will be sufficient to point out certain elements for purpose of identification, for" example, the mold blade carrier In, the topmold blade shoe II, the m'old bl'ade guide I2, the lower mold blade I3", the upper mold blade l3, and the-mold blade carrier latch spring [4. All of these parts are shown in Fig. 1, and'they will be readily'recognized by those skilled in the art.-

Fig. 2 shows the mold assemblyoriFig. l with the top mold blade shoe II" and the mold blade guide l2 both removed to expose the" mold blade carrier forward travel stop l5, the lower mold blade backwardtravel stop: I 6, and the small type block l1. I

In. prior art mechanisms, the'mold blade carrier forward'tr'avel stop I5 was provided with an upper extension which passed through the customary opening l8 in the mold blade carrier latch and rested on the small type block H; but this'construction limited the extent to which the'mold blade carrier could be moved, and therefore limited the casting cavity unnecessarily.

According to my invention, I have p'rovidedthe mold blade carrier forward'tra'vel stop l5 with a short upper extension or portion I9 which terminates short of the mold blade carrier and the mold blade carrier latch, and is even shorter than the lower extension l9, and thereby provides ample clearance for the mold blade carrier latch 20 to be withdrawn with the mold blade carrier upon which it is mounted, without being obstructed by the upper extension IS on the mold blade carrier forward travel stop. The function of the latch 20 is to disengage the lower mold blade from the top mold blade so as to cast low quads and spaces, but the function of this latch is well known and forms no part of the present invention, theflatch being shown in the drawing merely as a usual part of a complete mold assembly. In order to provide a positive forward travel stop action, I have added a lug 2| on the side of the mold blade carrier [0 upon which the mold blade carrier latch 20 is pivotally mounted. This lug 2| strikes against the upper extending portion IS on the mold blade carrier forward travel stop [5 to limit the forward travel of the mold blade carrier, and these parts are ground for accuracy.

It will be understood by those skilled in the art that the function of the mold is to form a cavity of correct point and set sizes used in casting type, and the mold which forms a necessary part of the type casting machine is located in such position that when the matrix case (not shown) descends in the normal operation of the machine the desired matrix or space is presented over the opening in the top of the mold to receive molten metal which passes into the mold cavity to form the face of desired type. Reciprocating movement is imparted to the mold blade carrier in the well understood operation of the machine to vary the size of the mold cavity set-wise, and to eject cast type from the mold.

In order to permit the mold blade carrier Hi to withdraw the mold blades sufficiently to form a casting cavity opening to at least .3321", it is also necessary to modify the lower mold blade backward travel stop or shoe It by cutting away a corner thereof as shown at 22 in Fig. 3. Also, the small type block H has been made wider to afford the longer mold wall necessary, and at the same time to afford a continuous bearing surface for the mold blades. It will be noted also that I have provided a similar cut-out portion, shown at il in Fig. 1, n the top mold blade shoe to accommodate the longer travel of the upper mold blade l3; and the bottom opening M has been enlarged, as shown in Fig. 6.

By the above described construction in a mold for typecasting machines, I have provided means for increasing the casting cavity 25 up to .3321" and more, thus trebling the casting capacity of the commercial machine, or greatly increasing the. casting capacity with the commercial machine. It will be obvious to those skilled inthe art that my invention provides needed mechanism of great usefulness, and that while I have illustrated and described my invention in a very practical embodiment thereof, various changes, adaptations and embodiments may be made without departing from the scope .of my invention as defined in the following claims.

Iclaim: 3.. Improvement in a having a slidably mounted mold blade carrier, upper and lower mold blades carried by said mold blade carrier, a mold blade carrier latch mounted on said mold blade carrier, and a mold blade carrier forward travel stop mounted adjacent said mold blade carrier,

beyond anything possible typecasting machine moi-d 1 said improvement comprising a lug on said mold blade carrier adjacent said mold blade carrier latch and extending from said mold blade carrier for engagement with a portion of said mold blade carrier forward travel stop to limit forward movement of said mold blade carrier, said portion of said mold blade carrier forward travel stop extending toward said mold blade carrier but terminating short of said mold blade carrier.

2. Improvement in a typecasting machine mold having a slidably mounted mold blade carrier, upper and lower mold blades carried by said mold blade carrier, a mold blade carrier latch mounted on said mold blade carrier, and a mold blade carrier forward travel stop mounted adjacent said mold blade carrier, said improvement comprising a lug on said mold blade carrier adjacent said mold blade carrier latch and extending from said mold blade carrier for engagement with a portion of said mold blade carrier forward travel stop to limit forward movement of said mold blade carrier, said portion of said mold blade carrier forward travel stop extending toward said mold blade carrier but terminating short of said mold blade carrier and said mold blade carrier latch.

3. Improvement in a typecasting machine mold having a slidably mounted mold blade carrier, upper and lower mold blades carried by said mold blade carrier, a mold blade carrier latch pivotally mounted on one side of said mold blade carrier, and a mold blade carrier forward travel stop mounted adjacent the side of said mold blade carrier on which said mold blade carrier is mounted, said improvement comprising a lug on said a mold blade carrier adjacent said mold blade carrier latch and extending from said mold blade carrier for engagement with a portion of said mold blade carrier forward travel stop to limit forward movement of said mold blade carrier, said portion of said mold blade carrier forward travel stop extending toward said mold blade carrier but terminating short of said mold blade carrier and said mold blade carrier latch.

GORDON W. CURTISS.

No references cited.

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