US116011A - Improvement in ax-bit-blank machines - Google Patents

Description

3 Sheets-fSheet 1.

iAx* B11 Blank Machines.

Patented lune 20,1871.

Y No. 116,011.

` 3 `SheetsnSheet 2.

E. BARTHOLOMEW.

` Ax Bit Blank Machin-es.

NO. HJL I' PatentedJuneQ-OJSH.

-across the said side.

UNITED STATES PATENT OFFICE.

ENosz BARTEoLoMEw, or MILL HALL, PENNSYLVANIA.

IMPROVEMENT IN AX`BITBLANK MAC'HINES.

Specification forming part of Letters Patent No. 116,011, dated June 20, 1871. l

` To all whom itvmay concern.-

Be it known that 1, ENos 'BAETHOLOMEW of Mill Hall, in the county of Clinton and Sta-te of Pennsylvania, have invented a new and Improved Ax-Bit-Blank Machine; Aand I dohereby declare that the following-is afull, clear, and exact description thereof, which will enable others skilled in theart to make and use the same, reference being had to the accompanying drawing forming part of this specification.

This invention relates to anew and improved machine for cutting andv shaping the ax-bit a cross-section of the bar from which the blanks are to be cut, and Fig. 6 is au end view of one f of the blanks after being cut and shaped.

Similar letters of reference indicate corresponding parts. l

A is a vertically-reciprocating cross-head,

i Working between guides B by a drivin g-shaft,

C, in any suitable or approved way. This crosshea-d carries a cutter, D, which works in connection with the iix'ed cutter E on the ,bed F of themachine, to out the blanks from the bar fed along over the said fixed cutter against gauges G, which stop .it when fed in beyond the cutters Ethelength required for the blank. This fixed cutter is shaped in its upper edge to correspond with the irregular side H of the bar to be cut, so that the latter will bear on it alike I is a gauge or stop applied to the cutter E to assistthe attendant in placing the bar on the latter properly. The cut blank falls upon the carriers K between the vertical hinged plates L, and is carried back a short distance over the sides M ofn a female die, O, and under a broad punch, P, forforcin g it through the die for turning the edges up, as indicated in Fig. 6, the said punch having the' sameshape as the air-pole, to which the bit is to be fitted. The said carriers K consist of two prongs projecting from plate Q., one on each side of the female die. The blank felis en them so as to rest by each .edge on them. They lie under the blank when the punching begins, but

the bending of the blank over the raised ribs J I of the parts M of the 'die draws the blank from them'to the die. I intend to make these ribs J detachable for removing them readily for repairs. The plate Q, to which the carriers are attached, works toward and from the fixed cutter in guides R on the bed of the machine. It has' a hole, S, with walls oblique to the top,

tlroughwhich a bent bar, T, attached to thel bars V attached to the cross-head, and working in the holes W, having the projections X, be,-

. tween which and one end wall the curved ribs Y of said bars work to move the said compressors. These parts are so arranged that as soon as the blank yhas been forced down through the female die, and before'it is discharged from the punch, also before the latter arrives at the end of its downward movement, they are brought. against the sides of the turned-up parts Y and compress them hard against the punch to give them the same bevel on the outside they have on the inside, and reduce the upper edges down thin, and cause them to fit snugly7 and with eX- actness' against the punch, so that when placed on the aX-pole they will it in like manner and exclude. the cinder and other foreign matter while in the lire, thereby insuring a morev perfeet weld than when they iit the pole loosely. The hinged plates L are mounted in supports on plate Q, and provided with set-screws L for `setting them inward more or less, and-are for l causingV the blank to be properly centered with the die O, and to be adjusted for-wide or narrow blanks.- The gauges are made adjustable on the movable plate Q by a set-screw, A', as shown, for varying them 'for longer or shorter blanks, .as required, and are moved back and forth by th'e said plate. 1?1 and B? represent a movable and xed cutter, employed in connection with the crossnhead and bed for trimming` the endsof the bars, or for other purposes.

The sliding,l plate Q and the compressors may be operated by any other suitable means; but I prefer the means here shown, as the construe tion is simple and cheap. The hole Sin the plate Q may have frictiolrrollers arranged in it to take the Wear out of the bent rod T, and the said rollers may be adjustable and removable.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of the cutters D E, oar ricrs K, punch P, and die 0, substantially as specified.

2. The compressors, arranged and operated in oonnection with the broad punch and female die, for the purpose of beveling` the steel ends with female die, broad punch, and compressors,

as and for the purpose specified.

5. The combination, with the cross-head and the movable plate, of the bent bar T, said bar Working in the oblique hole S in said plate, substantially as specified.

6. The combination, with the compressors having the holes W and projections X, of the bars Z attached to the cross-head, and having the curved ribs Y, substantially as specified.

ENOS BARTHOLOMEW.

Witnesses S. B. DARRAH, H. BARTHOLOMEW.

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