US526148A - Stereotyping-press - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. Wn J. EGAN. STBREOTYPING PRESS.

No. 526,148. Patented Sept'. 1'8, 1894'.v

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W. J. BGAN.

STBRBOTYPING PRESS. y No. 526,148. Patented-Sept. 18, 1894.

NUNrrED STATES PATENT Gwinn.

VILLIAM J. EGAN, OFMILVAUKEE, VISCONSIN.

STEREOTYPING-PRESS.

SPECIFICATION forming part of Letters atent No. 526,148, dated September 18, 1894.

Application mea `May 24., 1893.

To all whom, it may concer-n..-

Be it known that I, VILLIAM J. EGAN, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Stereotyping; and do hereby declare that the following is a full, clear, and exact description thereof.

My invention has for its object to eect a saving of time and labor in the production of papier-macheJ stereotype molds; and it consists in a certain peculiar method and apparatus hereinafter described with reference to the accompanying drawings and subsequently claimed.

In the drawings, Figure 1 represents a vertical longitudinal section of a machine constructed according tomy invention for the carrying out of my improved method of making papier-mache stereotype-molds, the section being taken on line l-l of the third figure; Fig. 2, an under side view of the lifting or platen portion of the machine, the same having parts thereof broken away to better illustrate the construction; Fig. 3, a section taken on line 3--3 of Fig. 1, and Figt a similar view taken on line 4-4 of the preceding figure.

Referring by letter to the drawings, A represents the stationary portion of my apparatus in the form of a cast-metal stand, herein shown as comprising a series of parallel vertically disposed strengthening ribs b and a chamber c, thelatter inclosing continuations d of the ribs. These continuations of the ribs are cut away at suitable intervals to form passages e for the circulation of steam admitted to the chamber c through a pipe B and exhausted therefrom through another pipe C these pipes being shown in Fig.`1, as preferably provided with steam controlling valves, the latter being of any suitable construction, and accessible through openings in the sides of the stand. This provision for steam-heatingof thevstand is made as a matter of convenience rather than necessity, as gas or other fuel may be utilized for the same purpose. The stand is designed as a support for typeforms and is made in the manner above specified in order to obtain the requisite strength Serial No.\4=75,310. (No model.)

` to withstand the pressure that is exerted thereon in the manner hereinafter set forth.

The strengthening ribs b of the stand Aextend in opposite directions therefrom alternate with like ribs f on a platen-plate D, and at one side of the machine a pintle E loosely engages these alternate ribs to thereby form a hinge for a platen-plate, certain ribsof the latter being provided with rod-like extensions g for counter-weights E', a portion of one of these counter-weights being shown in Fig. 1. At the other side of the machine the ribs of the stand and platen-plate have suitable registering openings for engagement with a detachable bar F that serves to lock said platenplate in a horizontal position when the opera` tion of making a stereotype-mold takes place.

A continuous ledge D on the under side of the platen-plate is provided with a series of depending screw-threaded pins h that engage a sheet G of rubber or other suitable yielding fluid-proof material and a clamp-frame H, the latter being held in place against the fluidproof material by means of nuts i run on said pins, whereby I provide a compartment j having an entrance in the form of a slot `k in said platen-plate. Cast with the platen-plate is a cylinder I transverse to the ribs f and parallel to the slot lc with which it communicates, and as herein shown valve-controlled fluid inlet and outlet nipples communicate with the compartment j above specified, the inlet nipple being for detachable connection with a hose or other conveyer leading from asource of fluid supply. Extending into the cylinder I through a suitable stuiii ng box .I in which it has its bearings is a screw-rod K provided at its outer end with a hand-wheel L or other suitable actuating device. Engaging the screw-rod K is the tapped head of a hollow cylindrical plunger L this head being shown as preferably consisting of a screw-plug M having interior threads matching` those on the rod. The plunger is of such diameter as to leave a water-space m between itself and the cylinder I, and said plunger has ports n adjacent to the head that engages the screwrod. The plunger also extends through a gland O at the rear end of the cylinder and has its outer head preferably in the form of a screw-plug N, as best illustrated in Fig. 3. 4

said plunger along the screw-threads.

type-mold. The plunger portion of the platen is run out on the adjusting screw and water or other liuid admitted to said platen to fill all the existing space therein, the undue strain that would otherwise subsequently come upon said plunger being equalized by the volume of fluid admitted thereto through the ports above specified, and by these ports I prevent the backing up of the fluid against said screw,

.as would be the case were said ports omitted and said Huid found its way into the afore- The iiuid inlet and outlet nipples being closed the platen is swung up on its hinge and a form of type positioned on the stand. A moist papier-mache matrix is now placed on the typeform and blanketed in the usual manner after which the platen is swung down to its horizontal position and locked in place, the yielding fluid-proof portion of said platen being in contact with the uppermost matrix blanket. The screw-rod is now actuated to exert a draw on the plunger portion of the platen and as this plunger gradually approaches toward the operator there is a corresponding displacement of the iiuid in thev cylinder through the slot in the platen-frame into the adjacent lower compartment thereby causing a proportionate pressure against the matrix on the type, and the yielding lower side of said compartment permits of a compensation rfor inequalities in the face of the type-form or blankets. erted the matrix is indented to form the By the fluid-pressure thus exstereotype mold and coincident with this operation said mold is dried by heat radiated from the stand. The mold having been completed, the platen is unlocked and again swung up out of the way to permit the removal of said mold from the type-form.

From theY foregoing it will be seen that I do away with the usual beatingI in of the matrix prior to the exertion of pressure thereon, and by the direct application of liuidpressure and the yielding nature of the pressing surface I avoid mashing of the type-form and otherwise obtain better results than is usual in the art, while at the same time I may dry the mold coincident with the impression of the matrix on said type-form.

The machine herein described is at present my preferred means for carrying out my method of making papier-mache stereotype molds, but this method contemplates broadly the employment of yielding pressure, either hydraulic or pneumatic primarily exerted against the matrix or the blankets laid therel on,these blankets being necessarilyemployed in connection with the drying of the impressed matrix, but not absolutely essential to that step in said method that contemplates obtaining the impression, and hence it is more a matter of convenience than necessity to dry a mold coincident with its formation on a type-form, although by this step in the .art I effect an additional saving of time and proof material clamped to the ledge, a cylinder on the plate in communication with the compartment, a screw extendingthrough one head of the cylinder, a plunger movable on the screw through the other errd of said cylinder; and suitable means for introducing fluid to the space within said platen, substantially as set forth.

2. A stereotype-machine consisting of a suitable stand, suitable means for heating the same, a platen embodying a plate having a depending continuous ledge bounding a compartment, a sheet of yielding fluid-proof material clamped to the ledge, a cylinder on the plate in communication with the compartment a screw extending through one end of the cylinder, a plunger movable on the screw through the other end of said cylinder, and suitable means for introducing fluid to the space within said platen, substantially as set forth.

3. A stereotype-machine consisting of a suitable stand, a platen embodying a plate having a depending continuous ledge bounding a compartment, a sheet of yielding fluidproof material clamped to the ledge, a cylinder on the plate, in communication with the compartment, a screw extending through one end of the cylinder, and a hollow plunger movable on the screw through the other end IIO of said cylinder and provided with ports communicating therewith; andsuitable means for introducing fluid to the space within said platen, substantially as set forth.

4:. Astereotypiug-machine comprisingastationary stand for the support of type-forms, a hollow platen hinged to the stand and having an under face of flexible fluid-proof material, suitable means for locking the platen in its working position, and other suitable means for exerting {luid-pressure within said platen, substantially as set forth.

5. A stereotyping machine comprising a suitable stand, a hollow platen having an under face of flexible fluid-proof material, a cylinder on the platen in communication with the interior of the same, a screw extending through one head of the cylinder, a plunger movable on the screw through the other en d suitable stand, suitable means for heating of said cylinder, and suitable means for inof said cylinder, and fluid conveyers leading troducing fluid into said platen, substantially into said platen, substantially as set forth. as set forth. In testimony that I claim the foregoing I 6. A stereotyping machine comprising a have hereunto set my hand, at Milwaukee, in I 5 the county of Milwaukee and State of Wlsthe stand, a hollow platen having an under consin, in the presence of two Witnesses. face of fiexible Huid-proof material, a cylinder on theplaten in communication with the interior of the same, a screw extending through one head of the cylinder, a plunger movable on the screw through the other end WM. J. EGAN. Witnesses:

N. E. -OLIPHANT, HENRY DANKERT.

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