US86503A - Improvement in blank or bah for toe-calks - Google Patents

Description

@wat i IMPROVEMENT IN BLANK OR BAR. FOR TOE-SALES..

' The Schedule referred co Ln these Letters Patent and making part cf the same.

To all whom t f:1w/y concern Be it known that I, P. F. BURKE, of Worcester, in the county of Worcester, and State of Massachusetts, have invented an Improved Blank or Bar for 4Toe-Calks'; and I -do hereby declare that the following,

taken in connection with the drawings which accompany and form part of this specification, is a description of my invention suiiicient to enable those skilled in the art to 'practise it. p

Letters Patent, No. 78,581, were granted, June 2, 1868, for the invention of Thomas Dooley, for a calk or calk-blank, having a peculiar `relation of iron and steel therein. In said patent the web of ironv which unites the edges of the bar is made of a width equal to twice the lengtlrofthe spurs or steady-pins projecting om the bodies of the toe-calks.

This width I have found to be unnecessary for the production of punched toe-calks, and'wasteful of material,and the object of my invention 'is to save the unnecessary waste resulting from making the bars or blanks as shown and described by Dooley.

'In practice, I make the toe-calk bar or blankwith a width of web equal tothe length of the spurs or steadypins formed on the calks o be made; and

My invention consists 1n a bar or blank, having its edges formed in cross-section, like the sections of the toe-calksto be produced therefrom, when said edges are united by a web integral therewith,vand of a width equal to the length of the. steady-pins formed on the calks.

, This improved blank or bar saves, to be utilized ih merchantabl'e toe-calks, one-half of .the waste produced from Dooleys bar, amounting, for the average of sizes of toe-calks, at present prices of material, to about ifteen dollars per ton; that is, from a ton of material, I can produce from my blanks, on an average, about fteen dollars worth more of toe-calks, of given dimensions, besides my Waste, than can be produced by Dooley; and

My invention further consists in a toe-calk bar or blank made with the web uniting the edges-located out of the centre of said edges, the object of this. part of my invention being to-bring the steady-pin .of a toecalk further from the edge of the shoe to which it is welded, so that when the steady-pin is driven through the heated iron of the shoe, it shall not bulge or crack the metal, as was the casev when the steady-pin was made central with the calli.-

Figures l and 2 of the drawings are, respectively, a plan and an end view of my improved toe-calk blank or bar, and A Figures 3 and4 are similar views of the toe-calk bar or blank, as made by Dooley.

In figs. l and 3, the dotted lines show the steadypins and the lines of separation at the ends of the toecalks, and inspection of said gures will clearly show the diminished waste coming from my improved bar.

In the drawings, a a. are the edges of each bar, and b, the central web of each, which, in fig. 3, is double the width'that it is in g. l.

In iig. 4, the web is shown as centrally located, with respect to the edges a a, while in mybar, fig. 2, it will be seen that the web i's located out of centre.

presented' toward or at the perimeter of the shoe, this setting the steady-pins further backfrom the ,outer edge of the shoe into the metal thereof, and lessening the liability of cracking or bulging Ythe shoe, in the act vof uniting the calks to the shoes.

I claim a toe-calk bar or blank, made with the web uniting the edges, of' a width substantially equal tothe ength. of the steady-pins, as and for the purpose speci- Also, a toe-calk bar or blank, having its web located out of centre, with respect to-the edges, substantially as and for the purpose shown.

P. F. BURKE.

Witnesses:

J. B. CROSBY, THOMAS DooLEY.

Oalks made from bars like iig. 2 have the angle, at c,

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