US973851A - Matrices and blanks for making tablets. - Google Patents

Description

l L. BowMAN.. ITBIOBS LND BLANKS FOB IAIIIG APPLIOLTIOI FILED JAI. '1. 1910.

Patented ocu 25, 1910.

s annua-4MM 1. v'

IN VEN TOR,

WTNESSES Ww A WHW .Altarn'ey v IlLlIATvRIClElSrI AND BLANKS FOR MAKING TABLETS. c

pecication of Letters Patent. i Patented Oct, 25, 1910,

Ap'plnmon mea January 7, i910. serial No. 536,945.

To all whom it may concern: broken perspective view, illustrating the Be it known that l.. LLoYp BOWMAN, a manner of setting up matrices and blanks, 'citizen of the United States,'residing at and Fig. 15 is a broken sectional view of Fort Wl'voi'tli, in the county of Tarrant and blanks made integral with the bed plate of 60 State of Texas, have invented certain new the mold. and useful Improvements in Matrices and Similar characters of reference vare used Blanks for Making Tablets and the Like, t0 indicate the same parts throughoutvthe of which the following is a specification. several views.

My invention relates to matrices and A mold'is shown in the drawings but it 65 blanks for lettering various articles having must be'understood that this invention is extended faces or surfaces manufactured not limited to any particular design of mold. from plastic material, and the object is to, The mold shown has side pieces 1 and 2, provide means for manufacturing such artin 4top piece 3 and a base piece 4. Suitable cles with the lettering formed in or on the Clamps Flare pIOvided for holding the parts l articles during the molding thereof, and Of the mold 1n operative position. A bed more particularly to mold such articles so plate 6 iS PIOVEdMId tlllS bed Plate iS SUP- tliat the surface between and about the let` POI'GCl On a blOCk 7 0f Suitable COIligul'ltiOn. ters or figures or symbols will be smooth Fig. 2 ShOWS a Continuation 8 of the bed and have surfaces unbroken by roughplaces plate extending down by the base. The or ridges. Y blanks 9 are mounted directly on the bed Another object is t0 provide means for late 6. The matrix blOCkS l() are mounted manufacturing such articles in a rapid, ecoetween the blanks 9.' The blanks thus have nomical and efficient manner, grooves or channels for receiving any nu1n' Other objects and advantages will be fully bel' Of matrix blocks therebetween. 'The 80 `explained in the following description and blanks may be made as separate pieces from the invention will be more particularly the bed plate, aS Shown in the drawings, and f pointed out, in the claim. as refererd to above and the blanks may Reference is had to the accompanying also be made integral with a bed plate drawings which form apart of this applica- ShOWn in Fig 15a as the blanks l1 and bed 85 tion. slate 12 with its continuation 13. If the Figure 1 is a perspective View of a comlanks are made as shown in Fig. 15, the plete mold for making a tablet; Fig. 2 is a matrix blocks would have to be put infrom perspective view '0f a bed plate with blanks the Sides' kOf the 'bed plate. The blanks ll and matrices arranged thereon for receiving are undercut and the InatIX blocks would a plastic material; Fig, 3 is a perspective be dove-tailed into the channels 14 between view of a blank used on the bed plate bethe blanks 1'1- 'Y tween the letter matrices. Fig. 4 is a sec` In settin up the matrix blocks and blanks tional elevation of a mold with blanksand as set fortl in Figs. l1 to 14, inclusive, the matrices for making letters; Fig. 5 is an matrix blocks may be placed directly on the 95 enlarged sectional detail view of the bed bed plate and lined up and then a blank plate with sections of blanks'and matrices placed against the ro'w of matrix blocks 10 thereon. Fig. 6 is an enlarged sectional deand then another row of matrix blocks 10. tail view of onematrix and parts of two It will be seen that where the blanks are yother matrices,v illustrating the manner of Vmade se arate vfrom the bed plate the maforming the joint between the matrices. trix bloc s may be set up with greater ease Fig. 7 is a face View of a matrix for making and more quickly than where the blanks are sunken letters; Fig. 8 is a face view of a formed integral with the bed plate. Where matrix for making raised letters. Figs. 9 the blanks are made separate from the bed and 10 are Ysections of Fig. 8 taken respecplate the may be held to the bed plate in 105 tively on lines w-m and '1 y, of Fig. 8. any suitable manner, but, as a. matter of con- Fig. 11 is a perspective view of three mat- 'venience, the `sides 1 and 2 and the top 3 of rices. Fig. 12 is a Vface view of three letthe lmold boards will be sufficient to hold thev ters which can be made by such matrices as blanks and matrix blocks on the bed plate. shown in Fig. 11. Fig. 13 is a-broken per? Attention is called Ato the forms of the ma- 11" spective view showing the relative positions trix blocks and the blanks and the distin- 0fthe matrices and blanks.: Fig. 14` is a guishing feature of this invention from-preyblock 10 and t e b ank 9 being thus formed ner. v

' vj trixbiocks is much wider mbe bottom than "at the top. The joint between two matrix edges. A great diliculty heretofore encoun- 'the least possible surface bearing. For this vious inventions lies particularly inV forming the blanks and the matrix blocks so that the meeting faces will be formedV by feather tered in making smooth surfaces for such articles as contemplated, has been the formation of ridges at the junction or joints of' parts of the mold for formi the face of the article to be molded. T e cement or other plastic would run down between the pieces and this would make ridges and rough places on the surface of the articles to be manufactured. These diiculties are overcome by making the meeting faces with reason every oint either between a--matrix block and a lank or `between the matrix blocks themselves is formed by feather edy es'I or sharp edges. A feather or sharp eggs can be ,more easily vcleansed than if two extended at faces were to come together. It would be practicallyimpossible to prevent plastic material from entering between two extended flat faces.

By reference to Figs. 5 and 9 of the drawings it will. be seen that the crevice 15 between the blank 9 and the matrix block 10 is wider at the bottom than at the top and that the block 10 and blank 9 touch each other only atthe to Ved es, the joint between the with sharp or feather edges. .The matrix blocks are also constructed in the same man- By reference to Fig. 6 and Fig. 1`0lit will beseen that the crevlce 16 between two mahlocks Ais thus formed by two sharp or feather edges. A surface prepared of i blanks and matrix blocks in the manner thus i evase; Y,

described will be smooth as it will be racticallyimpossible `for cement or other p astic to run down between the meetingedges which form the joints. The blanks and the matrix blocks can be wedged close together and held in contact with each other by the molds, that is, the molding pieces 1, 2 and 3 with the clamps 5, the wei ht of the mold pieces'being suiiicient to hol the blanks and matrix blocks in position while the plastic material is being placed in the molds. The matrix .blocks may be made of any suitable dimensions and the blanks may be madeof any desirable width. This method of forming surfaces can be used to make raised letters or sunken letters, as illustrated in the drawings, Fig. 7 showing a matrix block for formin a sunken letter and Fig. 8 showing a matrixlock for formin a raised letter.

' Having fully describe my invention, what I claim as new and desire lto* secure by Letters Patent, is,- I

In molds for making and lettering tablets and the like, the combination of slde and end pieces and a bed plate, and blanks and matrix blocks mounted` on said bed plate, said blanks having undercut ed s and Said matrix blocks being dovetailed etween the blanks and said blanks and matrix blocks being held in place by saidsides and ends, the joints between saidV blanks and matrix blocks and between said matrix blocks being formed by feather. or sharp edges.

In testimony whereo I' affix my signature, in presence of two witnesses, January 7th, 1910.

LLOYD BOWMAN.

lVitnesses:

A. L. JACKSON, J. H. BOYDEN.

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