US771835A - Printer's block or base. - Google Patents

Description

PATENTED` OCT. 11, 1904:.

v No. 771,835. y

\ Y H. B. RoUsE.

PRINTER'S BLOCK 0R BASE.

APPLICATION FILED JAN.15, 1904,

Zuzeutor No MODEL.

' 'tnesemf Harry l5. Rouse v 71,115' orne!! Patented October 11, 1904.

PATENT OFFICE.

HARRY B. ROUSE, OF CHICAGO, ILLINOIS.

PRINTERS BLOCK OR BASE.

SPECIFICATION forming part of Letters Patent No. 771,835, dated October 11, 1904.

Application filed January l5y 1904. Serial No. 189,200. (No model.)

To all whom t may concern:

Be it known that I, HARRY B. RoUsE,a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Printers Blocks or Bases, of which the following is afull, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

l\/ly invention relates to printers blocks or bases, and has for its object the provision of an improved structure of this sort whereby various objections attendant upon the manufacture and use of these devices are overcome. The bases or blocks for the purpose specified have hitherto been constructed of casting metal, usually iron, the bases each being in the form of a plinth having a hollow interior open at the bottom and closed at the top. In order to secure desired rigidity, the casting- Walls have to be made of such a thickness that the outer irregular skin of the casting may be machined away to leave the side walls of the base smooth and adapted for a suitable uniform engagement with other portions of the furniture composing the form. rPhe walls when thus ground thin must retain suflicient metal to secure desired rigidity and resistance to compression strains. This result is secured at the expense of material weight added to the forms including the bases, which additional weight I am able to materially reduce and practically dispense with by means of my invention. I am also able to retain a large portion of the skin of the casting at the sides of the block, which isdesirable, owing to the toughness and stiffness of the skin, that materially adds to the strength of the side walls of the block. By retaining a large portion of this skin the thickness of the walls may be materially reduced without impairing their strength. Obviously, however, it is essential to have the portions of the bases that engage the adjacent elements of the form machineground to present outer flat surfaces and to make the outermost contour of the bases regular. To this end the thin walls of the bases are provided with overhanging or outwardlyprojectingflanges, preferably on all four sides of the bases, which are usually square, which flanges may be ground down to suitable size, leaving between them a panel of metal provided with the thin skin. For convenience in manufacture and as a supplemental strengthening device I also provide enlargements at the corners of the blocks coextensive with the flanges at the tops and bottoms of the blocks, which corner portions are also ground away.

It will be seen that by this construction the process of grinding of the blocks is also more easily and accurately accomplished, as they are not so likely to heat. Heretofore where thc sides of the blocks were provided with exterior surfaces each lying in a single plane said surfaces were likely to be left with a curvature bulging outwardly, owing to the heat generated in grinding preventing the blocks from having proper fit within the form. No such malformation need be present in the block or base of my construction. Moreover, it will be apparent that by means of my construction foreign particles naturally iind lodgment within the space provided between the top and bottom flanges, being thereby prevented from effecting improper disposition of the blocks.

I Will explain my invention more fully by reference to the accompanying drawings, in which-- Figure l is a perspective view of the preferred form of the invention. Fig. 2 isa sectional view on line 2 2 of Fig. l. Fig. 3 is a perspective view of the device of the prior art. Fig. 4 is a sectional view on line 4 4 of Fig. ,3.

Like parts are indicated by similar characters of reference throughout the different views.

The block c is of a height desirably accurately equaling the thickness of the open iron framework constituting the printers chase. The top b of the block preferably extends completely across the same and has an aperture c, that may receive any suitable tool to edect the removal of the block. The block is hollow, being formed of the top wall b and the side walls CZ, the bottom being uncovered. The block is desirably made of cast metal, as iron, as a consequence of which the inner surfaces IOO of the block are provided with the tough skin formed in casting. rlhe top and bottom marginal portions of the sides are provided with flanges e and f, that project beyond the side Walls proper of the block. These flanges or marginal extensions are ground or milled to form smooth surfaces that occupy true planes. As a further strengthening means and for conn venience of manufacture the flanges are united by thick corner portions (j, that project outwardly from the sides coextensivcly with the flanges.

Having thus described my invention, l claim as new and desire to secure by Letters Patent- A hollow rectangular printers block formed of cast metal having four thin side Wallsl and flanges at the tops and bottoms of said Walls projecting outwardly therefrom and finished to constitute engaging faces of the block, the

said block having its skin between the flanges 2O formed in casting intact, said block also having thickened corner portions projecting' coextensively with the top and bottom flanges, substantially as described.

In witness whereof Ihereunto subscribe my 2 5 name this 13th day of J anuary, A. D. 1904.

HARRY B. ROUSE. Witnesses:

GEORGE L. CRAGG, CARL H. CRAWFORD.

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