US67865A - Theoraphic co - Google Patents

Description

@uitrit tatrs s'tent @fitta TURNER, SEYMOUR de JUDDS OF SAME PLAGE. Letters Patent No.y 67,855, dated August 20, '1867.

IMPROVEMENT IN MACHINES FOR MAKING BUCKLES.

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To ALnwHoM Ir MAY coNeunN; i

13e it known that vI, MERWIN FOWLER, of Wolcottville, in the county of Litcheld, and State of Connecticut, have invented, madeT and applied to use a certain new and useful Machine for Forming Buckle-Bows or Frames; and I do hereby decla-re the following to be 'a full, clear, and exact description of the said invention, reference .being had to the annexed drawing, making part of this specification, whereinp Figurel is a. general plan of the said machine, the central bending die or former being shown in section.

Figure@ is a vertical section ofthe bending die 0r former; and

Figures 3 to 'i' represent in nearly full size the parts of the dies employed for` bending up the buckle-bow,

in the various positionsthey assume in the successivestages, Similar marks of reference denote the same parts. i Difficulty has heretofore been experienced vin bending` up the buckle-bows to the required shape, particularly where the sides of such bows are curved or havean inward bend; because if the wire composing such fr'amc is pressed bodily into a die the smoothness of its surface is marred, and sometimes thev wire is injured by being strained. i g

The object of my present invention is to form successive bends inthe wire until 4it -is'ibrought to the shape of the frame or bow without stretching, compressing, or injuring said wire.

y :My said-invention consists in anseries of dies standing radially around a central former or die, Yand acting progressively to bend the wire into the required shape; and to provide for the-double bend in the sides of the buckle-frame, the said central die or former is divided and forced together to crimp nr bend the wire.

In the drawing a isthe bed of the machine, carrying in suitableboxes the shafts b, c, UZ, -and e, connected together 'by mitre gears at the angles, so as all to revolve together. bypower applied'to one of the shafts. These shafts have on them cams of the shape to give to the respective slidesthe motions required, as hereafter set forth, and at the proper time relatively to eachother. 1, 2 3 3, 4, and 5 are therespective dies to be moved. Tliey are each formed to slide in suitable stocltsfon the frame a, and drawn backwards so that the rear ends of the slides are kept in contact with their respective cams, and for this purpose suitable .springs may be employed; The cams acting respectively on these slides and dies are marked 11,'u12, 12, 13, 13, 1-1, and 15, and rareset upon the respective shafts l, c, d, e. The central former or die z' is of the shape ofthe interior of the buckle-hcw. Itis supported by a standard, g, from the frame a, iig. 2,) andV dotted lines in iig. I. This die or former is made with an auxiliary piece, o, attached by pins G G, and on these the piece o slides as pressed away from the die z' by springs placed between thorn. lhe wire to form the bow is supp-lied to the machine in 'anysuitable manner, and cut off to the proper length. The die l comes up, holds the wire against thevdie or former c', and bends it intoa U shape, (see tig. 1lille dies 2 2 then press in the sides 0f the buckle-frame, as in tig. 4.. The auxiliary piece o then is closed up against the wire by the action ofthe slide 4 and cam 14 acting upon the said piece o, above'the 4die 5, (see fig. 2,) bending the wire into the forni cf iig. 5. The dies 3 3 then make the last bend into the form shown in fig. (i, bringing' the ends of the buei'tle-bow together; but as the wire Vis not always straight at this part, after having been bentas aforesaid, Icmploy the dic 5 topress upon the sume, asgsecn n'g. 7. It is generally necessary that the exterior of tne die o should be slightly concave, and the end ofthe die lconvex, to bend the wire suieicntly for it to remain straight when the pressure-of the dies is removed. The respective dies withdraw, and the buckle-frame drops off or is forced off by any suitable means, and the former or dies r' o separat-e, and the operation is repeated.

.'W'hat claim, and desire to secure by Letters Patent, iis-- The series of dies constructed and arranged substantially as specified, and acting successively to bend up a piece of wire 4into abuckle-bow or frame, substantially as set forth. I

In witness whereof I have hereunto set my signature this nineteenth dayef March, 1867.

MERW'IN FOWLER.

Witnesses:

. FREDK J. SEYMOUR,

H; S. BARBOUR.

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