US902197A

US902197A - Mold for casting type.

Info

Publication number: US902197A
Application number: US43490208A
Authority: US
Inventors: Isaac Baas
Original assignee: American Type Founders Co Inc
Current assignee: American Type Founders Co Inc
Priority date: 1908-05-25
Filing date: 1908-05-25
Publication date: 1908-10-27
Anticipated expiration: 1925-10-27

Description

, '1. BAAS.

GASTING TYPE( 90s. 902,197. Patendoct. 27, 1908. r

, Mvx

UNITED STATES l PATENT OFFICE.

ISAAC BAAS, OF NEWARK, NEW JERSEY, ASSIGNOR TO AMERICAN TYPE FOUNDERS COMPANY,

OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MOLD FOR` CASTING TYPE.

To all whom it may concern:

Be it known that I, ISAAC BAAs, of Newark, in the county of Essex and State of New Jersey, a citizen of the United States, have invented a new and useful Improvement in Molds for Casting Type, of which the following is a specification.

My invention especially relates to that class of type molds which are adapted to produce type provided with nicks or cross grooves on one side of their bodies, of a definite number and relative position to register with corresponding projections in the slits of the supply-cylinder of type setting machines. The number and relative position and character of the projections in suoli slits determine the type which that slit is to contain. Each slit is intended to receive a different type and therefore the projections referred to are different for each slit. With the usual ninety characters in a font this results in ninety different arrangements of grooves or nicks and means must be provided to adjust or arrange the mold to cast type having any one of these ninety different arrangements. Moreover, as at the same time type having different setwise dimensions may be used in the same type setting machine provision must be made in the mold to cast type having such different setwise dimension.

In United States Letters Patent No. 546,503, granted to Henry Barth, September 17, 1895, a mold is described which makes provisions for the accomplishing of the objects for which my mold is designed, but in this case a different cheek piece or mold together with a different body piece has to be used for each letter to be cast. Moreover, the adjustment of each mold to the machine takes considerable time.

My improvement relates to a mold of such character which contains a cheek piece of peculiar construction carrying attaching means whereby what I term a key piece carrying projections which determine the nicks which the type cast with its assistance is to have, is detachably inserted against the cheek piece to form a part of one side of the mold cavity and thereafter with the coperation of a plunger ror body piece of peculiar character can be used. to cast type having the same nick combination but different setwise dimension.

Specification of Letters Patent.

Application filed May 25, 1908.

Patented. Oct. 27, 1908.

Serial No. 434,902.

My invention will be understood by refer ence to the drawings, in which- Figure 1 is a perspective view of a mold, the sliding cover and matrix being omitted. Fig. "2 is a longitudinal sect-ion taken along the line 2-2 of Fig. 1. Fig. 3 is an end view of one of the cheek pieces showing the key piece in position. Fig. 4: shows the plunger or body piece in perspective. Fig. 5 is a top view of the key holder. Fig. 6 is a plan view of the crank piece by which the key holder is thrown in or out as well as vertically. Figs. 7 and 8 are views of one of the type in perspective.

A is the base plate which carries two cheek pieces B, B1. Thesev parts and the other parts of the mold except as hereinafter described are like thoseshown in the Barth patent above referred to and are operated by means such as are described in the patent to Barth & Lietze, No. 376,765, dated J anuary 24, 1888. For this reason I shall not undertake to describe the parts in detail nor their operation in detail. As a matter of general description, however, it may be said that the two cheek pieces are upon opposite sides of the mold cavity, the face of the cheek piece B1 serving as one wall of the cavity, the opposite wall of which is formed by the key piece O and a portion of the face of the cheek piece B, the bottom of the cavity being formed by the plunger D, E, E1 being the jet pieces between which the metal is forced into the mold, and the opposite end of the mold being closed by the matrix (not shown).

The key piece C is provided with the necessary projections to cast a type having a given letter and when that type is cast in its smallest dimension setwise the plunger is adjusted so that when in casting, or lowest position, it is on a level with the line c, that is, the line from which the projections c1 on the key originate. It will be seen when this is the fact that the mold cavity will have a vertical dimension exactly equal to the `height of one of the projections c1, and when the cavity is filled with metal the type which the metal forms when cool will show a series of nicks the complement in all respects of the projections upon the key piece.

My invention, however, contemplates the use of the same key piece in the casting of type having the same nicks but varying in setwise dimension and this I accomplish as follows.

t will be noted from F ig. 3 that the key piece is in fact somewhat narrower than the width of the cheek piece B against which it is fastened. The means for holding it in place will be described below but one of the elements is the support F which is of approximately the same width as the key piece and is screwed against the cheek piece in such position that when the key piece is properly adjusted in the mold it will rest upon the support F being in fact held against it by means to be described below.

The other element which cooperates in this matter is the plunger' D which is peculiarly constructed as shown in Fig. 4 where CZ is that portion of the plunger which runs between t-he jet pieces of the mold and the portion Z1 instead of being of uniform thickness is recessed or mortised as at (l1, the projections which indicate the normal thickness of the plunger being indicated at cl2. The width of this mortise is such that it will form a close sliding fit about the support F and key piece C, its two projecting edges (Z2 riding up and down against the end of the cheek piece B against which the supportI F and key piece C are' attached, the opposite cheek piece B1 being in all cases adjusted close against the opposite face of the plunger.

In the Barth mold as described in the Barth patent above referred to the plungerl is grooved to fit over the plates which form the nicks in the type and the mold is adjusted according to the setwise dimension desired by adjusting the throw of the plunger', the greater the setwise dimension, the longer being the movement of the plunger', and vice versa. The same is true of the present case, the greater the setwise dimension of the mlold required for the type to be cast the further the plunger is withdrawn after it has discharged the type which has been cast. But the same plunger is used whatever key piece is used and the key piece is changed with each letter, while in Barth the cheek piece and plunger must both be changed with each letter, and in actual practice the whole mold is changed.

The mold as adjusted in Fig. l is arranged by reason of the position of the plunger to cast a type having a setwise dimension somewhat thicker than the smallest setwise dimension which can be cast by this mold; for if a type having the smallest dimension setwise was to be cast the top of the plunger in its lowest position would be in the same plane with the line c. Being withdrawn, however, as shown in Fig. l, the metal in flowing in against the matrix (not shown) and under the cover will flow around and take a shape lcaused by so much of the key piece as is exposed, thus resulting in a type having nicks formed by the projections c1 and a recess formed from the' rest of the exposed portion of the key. Such a type is shown in Figs. 7 and 8 where the nicks are Iindicated at g, the recess at g1, and at g2 is shown the portions of the type which close the recess at the ends and give to the type .its setwise dimension, this portion having su'l'licient body or strength to prevent the type from being crushed when set to give an impression. It will be seen that under these conditions the setwise dimension can be varied within considerable limits from what may be called the narrow type to a fairly wide type setwise, the nicks extending clear through from one side of the type to the recess, thus enabling the type to find its place in the proper slit in the setting machine when being automatically distributed. rl`he projections at the mouth of the proper slit register with the nicks however thin the wall in which the nicks exist, and thereafter because of the recess the type falls into its own slit.

My invention, however, has another feature which is equally valuable, namely, that of readily locking and unlocking the key piece so that the key piece may be taken out of the mold without waiting for the mold to cool and a new key piece snbstii tuted for it at once so that the mold is out of commission a few moments only. For this purpose the face of the cheek piece B is provided with a cavity B2 extending backward a considerable distance therein, this cavity being substantially circular in cross section. Within this cavity is set a holder H which may be made of metal and is preferably somewhat larger in diameter in the middle as at 7L than at the two ends thereof, or is otherwise constructed to yield under pressure at its outer end. Its inner end is provided with a notch tl and its outer end is provided preferably with a semi-circular projection ft2, and near the outer end is an elongated opening 7a3. The semi-circular projection above referred to conforms to a corresponding opening c3 in the key piece C. The cheek piece B is provided with two openings ZJ, 1 in its top, both of which en ter the cavityy B2. The opening b is sufficiently large to allow the head of a screw fri to pass down through it. A continuation b2 of this opening is threaded to receive the threads of the screw h4. The opening El also has a continuation on the lower side of the cavity B2 and in it sets a crank piece J, this crank piece comprising what may be termed two heads y' and jl connected by a crank or eccentric pin j?. The screw L* passes down through the elongated hole if in the holder H and the pin jg of the crank piece J normally lies in the recess /tl in the `holder H. The head ,7' of the crank piece is provided with a slot so that a screw driver may be used to turn it.

To fasten the key piece in place the holder H is first withdrawn so that its end or proj ection 71,2 is Hush with the front face of the cheek piece B. rlhe key piece is then put in place resting upon the support F and the crank piece J is turned so that the crank pin y2 passes into the notch h1 and engaging its front wall pushes the holder forward thrusting the projection into the opening c3 in the key piece. The screw it* is then screwed down snug so that the holder H is rocked slightly on its larger portion 7L, and in addition if elastic perhaps sprung slightly so that the projection h2 binds the bottom of the key piece in place. When this'adjustment has been made the stroke of the plunger is then adjusted by means such as are described in the Barth & Lietze patent above referred to, and the mold is then ready for use, the cover also being put in place to perform its functions. As stated above, type of various setwise dimensions may be cast by adjusting the stroke of the plunger.

When it is necessary to cast a different character the cover and matrix are removed. The screw /zft is then turned to release the end of the holder which is raised by pushing down on J, lifting one edge of the key piece slightly above the `edge of the mold where it may be grasped by pincers. The crank piece is then turned to withdraw the holder from engagement with the key piece and the key piece may be readily removed and a new key piece inserted as before.

So far as I am aware no type mold has heretofore been constructed in which the same key piece is used to cast type of different setwise dimension but having the same nicks. This I believe to be absolutely new with me and as it now"seems to me the cooperation of a plunger of peculiar character with the key piece is the best construction for accomplishing this result, but I do not mean to limit myself to the details specifically described for accomplishing this end. Nor do I mean to limit myself to the specific means for engaging and holding in place the key piece for other means may doubtless be devised for accomplishing this end. I have, however, found that the construction shown and described is simple and operates to lock and release the key piece with but little trouble and hence is exceedingly useful for this purpose. By cheek piece I mean a part against which the key piece is held, for I do not mean to limit my invention to a mold of the general construction of the Barth mold there are other kinds of type molds with which it may be used.

That I claim as my invention is:

l. -The mold above described having a key piece located to form a portion of one side thereof and a plunger adapted to expose a greater or less extent of the said side of said mold, as described.

2. The mold above described, one side of which comprises a cheek piece and a key piece attached thereto to expose a portion thereof, and a plunger adapted to expose to a greater or less extent said side of said mold, whereby a type may be cast therein, a portion 4of which is of the setwise dimension and. a portion of which is thinner than the setwise dimension, as set forth.

3. The mold above described, having a key piece and cheek piece forming one side of the mold, and plunger adjustable as to its stroke and adapted to coperate with the key piece to cast nicked type of different setwise dimensions.

il. The mold above described, having a cheek piece, a key piece narrower than said cheek piece, and a plunger' shaped to engage said key piece and the portions of said cheek piece at the sides of said key piece, as set forth.

5. The mold above described, having a cheek piece, a key piece detachably located thereon to expose portions of said cheek piece, and a plul'lger adapted to engage said key piece and portions of the exposed portions of said. cheek piece, as described.

(5. The mold above described, having a cheek piece, a key piece narrower than said cheek piece and located upon the said cheek piece to expose portions thereof at each side of said key piece, and a plunger recessed upon one side to engage both said key piece and said exposed portions of said cheekpiece.

7. In a mold, a cheek piece, a key piece and means for locking key piece to said cheek piece comprising a holder, a support, means for connecting said holder and said key piece, and means for causing said holder to clamp said key piece against said support.

8. In a mold, a recessed cheek piece, a key piece, a holder located in said cheek piece, and means for giving said holder an outward and an inward movement, and means for connecting said holder to said key piece, as described.

9. In a mold, a recessed cheek piece, a key piece, a holder located in said cheek piece, said holder being provided with a recess near one end, and a crank pin adapted to engage the recess in said holder, and when turned to give to said holder an outward and an inward movement, as set forth.

10. In a mold, a recessed cheek piece, a key piece, a support therefor, a holder located in said cheek piece, and means for giving to said holder an outward and an inward movement, and means for depressing the outer end of said holder comprising a screw engaging said cheek piece of said holder being connected to said key piece and adapted When depressed to bind said key piece against said support, as described.

1l. In a mold, a recessed cheek piece, a key piece, a support therefor, a holder and means 1, for giving said holder an outward movement to engage said key piece and an inward movement to disengage said key piece, means for depressing the outer end of said holder to clamp said key piece and for releasing said holder whereby it will lift said key piece 10 into position to project from said mold, as described.

ISAAC BAAS. Vitnesses WALTER S. MARDER, L. C. HAY.