US210952A

US210952A - Improvement in devices for indenting and heading umbrella-ribs

Info

Publication number: US210952A
Authority: US
Publication date: 1878-12-17
Anticipated expiration: 1895-12-17

Description

J. MOAULIFPE I v Device for Indent'ing and Heading Umbrella-Ems.

No. 210,952. Patented Dec. 17,1878.

WITNESSES N. PETERS, Puoraurnocmmsn, WASHINGTON. D G.

flttorney UNITED STATES PATENT.

JOHN MCAULIFFE, OF JERSEY CITY, NEW JERSEY.

IMPROVEMENT lN DEVlCES FOR INDENTING AND HEADlNG UMBRELLA-RIBS.

Specification forming part of Letters Patent No. 210,952, dated December 17, 1878; application filed May 9, 1878.

To all whom it may concern:

Be it known that I, JOHN MGAULIFFE, a resident of Jersey City, Hudson county, and State of New Jersey, have invented new and useful Improvements in Dies for I ndentin g and Heading Umbrella-Ribs,'of which the following is a specification:

In the common practice of heading or tippin g umbrella'ribs the tips or heads are formed by upsetting the ends while projectin alittle from a pair of clamping or holding dies, and the indenting or flattening of the ribs preparatory to punching the holes through which the covers are sewed on is done in another operation by a pair of flattening or indenting punches or dies, making two separate operations. Owing to the small size of the wire, it is exceedingly diflicult to make the holdingdies for the heading operation sufliciently accurate to hold the wire against slipping when the header acts on it; moreover, they very soon wear, and the wires vary in size, so that at the best there is considerable difficulty in heading the wires properly. I therefore propose to arrange the flattening or indenting dies together with the holdingrlies, and in such relation therewith that they perform their work at the same time that the holding-dies close on the wire, or imminediately thereafter, and then act powerfully in conjunction to hold the wire while the header acts, so that I not only save one operation, but also insure more perfect heading, and the indentingdie, which works in the lower or stationary clamping-die, I arrange with contrivances which cause it to drop a little when the clamping-dies open to allow the wires to bed fairly in the lower clampingdie, which would be prevented by the projection of it above the bottom of the groove, and would cause the wires to lie too much to one side or the other to permit the clampingdies to close rightly; and both of these indentingdies I make separate from and arrange in the clamping-dies, so that they may be adjusted as the points wear away, as in practice such points wear much more than the clampin g'dies.

Figure l is a sectional elevation of the dies. Fig. 2 is a plan of the bed-dies. Fig. 3 is a plan of the upper or movable clamping-die and the indenting-die used with it; and Fi 4 is a plan of an umbrella-rib, showing the indentation of one side and the tip or head.

A represents a bed or stationary die, and B amovable die, for holding the wire rib C while being upset by the header E. G is a flattening or indenting die, which I arrange in the stationary die-block, projecting up in the center of the groove of the die A; and H is a corresponding die, similarly arranged alongside of the movable die 15 in the stock I, to flatten or indent the wires 0, as commonly done preparatory to p unchin g the holes in which the covers are fastened. Gr and H consist of rods fixed in the die-blocks A and I, respectively, with suitably-shaped indenting-points, and being so that they may be adjusted from time to time as the points wear; and G is made to reciprocate, (say by a lever, L, worked by a cam, N, or other means,) in order that it may drop alittle after each operation, and thus allow the wire G to bed fairly in die A before dies A B close. K is an adjusting-screw for H. G may be adjusted by a screw on lever L.

It will be readily seen that by this arrangement the flattenin or indenting and the upsetting or headin g will be done by one and the same operation of the machine; and, besides, the indenting-dies give powerful auxiliary assistance to the l10ltllLlg'dlQS in keeping the wire in place after making the indentations and while the heading is being effected.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-- The combination, in a machine for flattening or indenting and heading umbrella-ribs, of the movable clamping-die, a separate adjustable flattening 0r indenting die, the stationary clamping-die, a reciprocating flattening or indenting die, and a header, substantially as described.

JOHN MOAULIFFE.

Vito esses W. J. MORGAN, F. A. THAYER.