US462260A

US462260A - Assionok

Info

Publication number: US462260A
Authority: US
Publication date: 1891-11-03
Anticipated expiration: 1908-11-03

Description

(No Model.) 2 SheetsSheet 1. G'- P. KENEHAN. PROCESS OF AND DIE FOR MAKING BELT FASTENERS.

W mz/lewnm. J. w

Patented N0v. 3, 1891.

? TTORNE VS.

(No Model.) .2 SheetsSheet 2 G. P. KENEHAN.

PROCESS OF AND DIE FOR MAKING BELT FASTENERS.

- No. 462,260. I Patented Nov. 3, 1 91.

EIG-.Y|I[

-IIa-.m 1 ii INVENTOR.

A TTORNEY:

Ni'rnn STATES PATENT Fries.

UILHER'I P. Kl lNEl-IAN', ()l CLEVELAND, OHIO, ASSIHNOR TO THE S'IEET BELT l AS'lEN ER COMPANY, OF SAIYHC PLAITE.

RRGCESS OF AND DIE FOR MAKING BELT-FASTENERS.

SPECIFICATION forming part of Letters Patent No. 462,260, dated November 3, 1891.

Application filed April 80, 1891- Serial No. 391.093.- (No model.)

To all whom it may concern:

Be it known that I, GILBERT P. KENEHAN, a citizen of the United States,'and a resident of Cleveland, county of Cuyahoga, and State of that principle so as to distinguish it fromv other inventions. 1

The objects of my invention are to provide an improved process of making belt-fasteners and to provide an improved die for carrying out a part of said process.

The annexed drawings and the following description set forth one mode of carryipg out the invention, such specific mode being but one of various ways in which the principle of the invention may be used.

In such annexed drawings, Figure I represents a top plan view of the female die for cutting belt-fastener-blanks; Fig. II, abottom plan view of the male die for said female die; Fig. III, a view of the blank; Fig. IV, a top plan view of the female diejfor bending and shaping the blank; Fig. V, a top plan view of said die, showingthe blank in position upon the die; Fig. VI, an elevation ofthe dies for bending and shaping the blank, showing the blank upon the die and the dies ready for operating upon the blank; Fig. VII, an elevation of the dies, showing portions of the male die broken away and illustratingthe dies as having bent and shaped the blank; Fig. VIII, an elevation of the dies, showing portions of the male die broken awayand illustrating the male die asbeing raised to withdraw the bent and shaped blank; Fig. IX, a side elevation of the maledic for bending and shaping; Fig. X, a bottom plan view of said die,-and Figs. XI and XII perspective views of the bentand shaped blank and of the finished belt-fastener.

In the drawings, the letter A indicates the female die, and the male die, by means of which the first step in my improved process is carried out-vi:a., the cutting of the blank. The female die has long notches (a and short ,notches a in the sides of its opening, and the male die has correspondingly-shaped long the ribs of the female die. "ribs D of the die are formed with upwardlyteeth a and short teeth a upon its sides, by

means of which the long prongs b and short prongs b of the belt-fastener blank 1; may be formedby cutting or stalnpingthe blank from sheet metal, preferably sheetsteci. When the blank has been out or stamped it is placed upon a female bending and shaping die C, which is formedwith a straight-sided rectangular recess (1', of the same width as the fastener to be formed. The upper edges 0 of thefe'cess are rounded, so as to admit'of the metalof the blank being smoothly drawn down between the sides of the recess. Two .ribs C are secured in each side of the recess, ha've rounded upper edges r" and guide projections c at their upper ends, between which the short prongs of the blank may be placed. The ribs are preferably formed from round pins or bolts having their lower ends fitted into cor-' responding cylindrical holes c in the bottom of the recess, said holes forming c ntinuations of cylindro-scglnental grooves in the sides of the recess, said grooves and holes be ing drilled at the same time in making the die. A portion ofihe outer sides of the pins which form the ribs is cut off flat, so as to form the flat faces of the ribs. The bottom of the recess (1" has a longitudinal groove 0, the purpose of which will be explained. A male die I) is formed with vertical ribs D upon it sides, having vertical grooves l) bet-we them, the grooves fitting so to slide-upon The faces of the tapering rounded recesses (I, corresponding in shape to the curvature to be given to the inner'sides of the long prongs of the fastener, and the bottoms or faces of the grooves D have upwardly-tapering rounded recesses (1', corresponding in shape to the curvature to be given to the inner sides of the short prongs of the fastener. The lower ends (I and (6" 0i. said recesses are rounded. \Vhen this male die is forced down upon'the blank which rests upon the upper side of the female die with its short prongs between the guide-projections 0 the blank will be drawn down into the female die, bending the prongs at right angles to the body of the fastener, the short prongsbcing bent on lines inside of the lines upon which the long prongs are bent. The

a Y which consists in first cutting the blank and tapering and rounded recesses in the sides of the male die will shape the prongs rounded upon their inner sides and will give the prongs the inward'curve 22 upon the outer sides of their points of bending, and the straight sides of the recess and ribs of the female die will shape the outer faces of the prongsstraight and fiat.

For the purpose of easilywithdrawing the bent and shaped blank fro'm'th'e female die,

an eXpeller'E, of stirrup shape, is pivoted. with its longitudinally-slottedsides e upon" pins 01 upon the ends of the male die, the expeller fitting into the groove 0 in the bottom of the recess-when the male die is forced to the bottom of said recess. The pins' d may slide in the slotted sides of the expeller when the male die is Within therecess and the expellerwill draw the bent blank out of the female die when the male die is raised after having bent the blank.

The outer sides of the prongs of the bent and shaped blank-are'chamfered or beveled, as shown at 11 by grinding or other suitable process, and the blank is finished as a complete beltrfastener ready for use.

I bending. and shaping the prongs of the fastfasteners, which cousistsin simultaneouslyener-blank, substantially as set forth.

2. A step in the process of, making beltbending the prongs of the fastener-blank along two lines at each side ofthe'blank and shaping said prongs, substantially as set forthj 3. The process of making belt-fasteners,

thereupon simultaneously bending'aiid shaping the prongs, substantially asset forth.

4. The process of making belt fasteners,

which consists in firstcutting the blank, there upon simultaneouslybending and shaping the prongs, and finally chamfering the outer sides of the ends of, the prongs, substantially as set forth.

5. A set of dies for-bending and shaping the prongs of belt-fastener blanks, consisting of a recessed female die and a correspondinglyshaped male die, one of said dies having shaping-recesses in its sides for the prongs 0f the blank, substantially as set forth. 7

6. A set of dies for bendingand shaping the prongs of belt-fastener blanks, consisting of astraight-sided and right-angled female die having ribs upon the sides of its recess, and a correspondingly-shaped male die having corresponding grooves and ribs in and upon its sides formed with. prong-shapingrecesses in their faces, substantially as setforth.

]7. The combination, with a pair of dies for bending and shaping-beltfastener blanks, of

an upwardly-movable expeller fitting in the bottom of the female die, substantially as set forth.

8. The combination, with a male die and a female die. for bending and shaping belt-fastener blanks, said female die having a longitudinal-groove in its bottom,'of an expeller shaped to fit into said groove and connected to be withdrawn by themale die, substantially as set forth. 7

9. The combination, with a male and a female die for bending and shaping belt-fastener'blanks, said male die having projecting pins upon its ends andsaid femaledie having a longitudinal groove in the bottom of its recess, of a stirrup-shaped expeller fitting in the groove of the female die and having longitudinally-slotted sides sliding upon the pins- .of the male'die, substantially as set forth.

In testimony that I claim the foregoing to be my invention'I have hereunto set my hand this 14th day of April, A. D. 1891.

' 4 GILBERT P. KENEHAN.

Witnesses: W

' WM. SECHER,

HORACE F. PARKS.