US438092A - Machine for making turn-buckle blanks - Google Patents

Description

(No Model.) C. B. BEACH.

MACHINE FOR MAKING T URN BUCKLE BLANKS.

No. 438,092. Patented Oct. 7, 1890.

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' v UNITED 4STATES"ATENTrIeIcE.

CLIFTON Is. BEACH, or oLEvELAIvD,"orno.v

MACHINE FOR MAKlNGpTURN-BUGKLE BLANKS.

SPECIFICATION forming part of Letters Patent No. 438,092, dated October 7, 1890.

Application tied December 7, 1887. Renewed oeeebee- 1, i888.

To all whom, t may concern.-

Be it known that I, CLIFTON B. BEACH, a citizen of the United States, and a resident of Cleveland,` county of Cuyahoga, and State of Ohio, have invented certain new and useful Improvements in Turn-BuckleForming Machinery, of which the following is a specification, the principle of the invention being herein explained, and the best mode in Which I have contemplated applying that principle so as to distinguish it from other inventions.

Referring to the drawings, Figure l is a longitudinal vertical section of the anvil and hammer, the ejector, clutch, and punches being shown in elevation, and a section of the turn-buckle blank being shown in position. Fig. 2 is a plan view of the anvil, die, and punches, showing the form of the die. Fig. 3 is a vertical sectional view of a portionV of the hammer and anvil, the punches being shown in elevation, and a piece of metal being shown in position on the anvil ready to be operated upon.` Fig. 4 is a cross-section of the metal bar before swaging. Fig. 5 is a sectional View of the turnbuckle blank when taken from the die after'swaging. Fig. 6is a sectional view of the 'finished turn-buckle. Fig. 7 is a Afront elevational view of a stand of rolls, showing a modified form of machine for forming the turn-buckle blank.

The anvil A is provided on its outer face portion wit-h the die-opening a and with the vertical slot b. Fitting in the latter is the spring-pressed ejector C, provided at its central portion with shoulder c, and having bearingagainst this shoulder is the coil-spring c', said spring having bearing at its opposite end against the mill-floor d. Said ejector is also provided with annular slot d, and in engagement with said slot is clutch-rod e, that extends outwardly through horizontal opening e in the anvil. Its outward extremity is pivoted to lever f, and this latter lever is in turn pivoted to lug f', attached to the mill-Iioor. At its lower extremity the ejectoris provided with shoulder-stop c2, engaging with the milloor and limiting the upward movement of the ejector when the clutch is released from engagement with the same. Fitting in dieopening a is the die G, having central slot g, through which the ejector passes, and proseeiei 110.286.923. (Ne eeeaei.)

vided with the elliptical groove h for forming the side portions of the blank and enlarged head portions h', for forming the heads of the same. The faces of the ejector and die are ilush with one another, the sides h2 of the ejector vforming the inner periphery of the groove h, whilethe shoulders or Walls t' of the die form the vouter periphery of the same.

The hammer-face K is attached toany suit- 6o able hammer' K and is provided with open ings 7c, similar in size and correspondingly 1ocated with openings h in the die. Half-circular openings 7c are also formed at either end of the diey and hammer-face. Said openings k in hammer-face and die register with each other When the hammer is in lowered position, as do also cand h. Through these openings la the punchesL have play, said punches being connected up'with any suit- 7o able reciprocating power.

The operationof forming the turn-buckles is as follows: I take a bar of iron or steel,

preferably of the shape shown in section in Fig. 4, and cut it into suitable lengths to produce the desired buckle. The severed portion is then heated to a soft swaging heat and placed on the die, as shown in Fig. 3. It is then struck by the hammer and the blank is hammered and swaged into the shape shown 8o in Fig. 5, the great Vpressure exerted by the hammer causing the metal to exactly conform to the shape of the die and the openings formed in the hammer-head that correspond and register with the enlarged openings h of the die. When the metal is thoroughly swaged, the hammer is maintained against the working metal, while thejpunches L are advanced and punch the metal forward, as indicated by the dotted lines in Fig. 1. The lever 9o f is then drawn back, thus freeing the clutch from engagement with the slot in the ejector. The coil-spring is then free to exert its force, which it does, forcing upward the ejector and the finished turn-buckle blank.

The shoulfrom either end, thus giving the required right and left hand thread. Aportion ofthe fell may be removed by the action of the In my modified machine for forming the turn-buckle I use a stand of rolls M N, each provided with suitable cams m and having elliptical grooves n and enlarged head forming depressions n and outer portion n2, flush with the cams. The cams m cause the metal of the blank passing through the rolls to be forced out into the grooves and head-forming depressions, and a turn-buckle having a thin central web is formed similar to the blank formed bythe hammer and die. The blank when freed from the rolls is then drilled and the web punched out, as in my preferred manner of forming it. In'this modified form of apparatus the cams m correspond with the raised portion of the die used in my preferred form, while the grooves n and depressions n correspond with grooves 7L and depressions h of the die. The outer portion 'n2 ofthe rolls corresponds with the face portion of the die outside the groove. Therefore the rolls may be looked upon merely as modified forms of dies or swaging-tools, the lower roll corresponding to the die and the upper answering the purpose of the hammer shown in the preferred form. A

The foregoing description and accompanying drawings set forth in detail mechanism in embodiment of my invention. Change may therefore be made therein, provided the principles of construction respectively recited in the following claims are retained and employed.

I therefore particularly point out and disl tinctly claim as my invention* l. In turn-buckle-forming machinery, a die having a groove of turnbnckle form, substantially as set forth. j

2. In turnbuckleforming machinery, a die having a groove of turnsbuckle form, the face inclosed by said groove formed in a rightfline plane, substantially as set forth.

3. In turn-buckle-forming machinery-,a die having a groove of turn-buckle form, the entire face inclosed by said groove being in projection from the latter, substantially as set forth.

4. In turn-buckle-forming machinery, a die having a groove of turn-buckle form, the face inclosed by said grooves being in projection from the latter and formed in a right-line plane, substantially as set forth.

5. In turn-buckle-forming machinery, the combination of two registering dies, each said die having a groove of turn-buckle form, substantially as set forth.

6. In turn-buckle-forming machinery, the combination of two dies, each said die having a groove of turn-buckle form, and also having the face inclosed by said groove in projection from the latter, said two dies having their said grooves and inclosed projecting faces respectively registering with each other, substantially as set forth.

7. In turn-buckle-forming machinery, the combination of two dies, each said die having a groove of turn-buckle form, and also having the face inclosed by said groove in projection from the latter, said two grooves being of equal depth and said two groove-inclosed faces being of equal projection,substantially as set forth.

8. In turn-buckle-forming machinery, the combination of two dies,each said die having a groove of turn-buckle form, and also having a swaging-face inclosed by said groove, said two groove-inclosed swaging-faces being parallel with each other,substantiallyas set forth. 9. In turn-buckle-forming machinery, a die provided with an elliptical groove terminating in enlarged head portions, substantially as set forth. g

10. In turn-buckle-forming machinery, a die provided with an elliptical groove, the longitudinal end portions of said groove of enlarged formation, substantially as set forth.

1l. In turn-buckle-forming machinery, the combination, with a die provided with an elliptical groove terminating in enlarged head portions, of a hammerdie provided with a corresponding elliptical groove having enlarged head portions, said hammer-die adapted to engage with said first die, substantially as set forth. A p

12. In turn-buckle-forming machinery, the combination of two swaging-dies, each having an elliptical projected portion in a rightline plane surrounded by a groove, which latter has its end portions of greater transverse dimensions than its central transverse portions, substantially as set forth.

13. In turn-buckle-forming machinery, the combination, with a die having an elliptical groove, of a second die provided with an unbroken projecting face formed in a right-line plane, said face conforming in shape and practically equal in size with the face of said first die lying within said groove, said dies adapted to engage with each other, substana tially as set forth.

I4. In turnbuckleforming machinery, a die having a groove of turn-buckle form, the face inclosed within said groove being in pron jection from the latter and in a right-line plane, a portion of said face being an ejector, substantially as set forth. v

15. In turn-buckleforming machinery, the combination, with a die having a groove of turn-buckle form, and also having an ejector opening formed within the outline of said groove, of an ejector fitted in said opening, substantially as set forth.

l1G. In turn-bucklefor1ning machinery, the combination, with a die having a groove of turnbuckle form, and also having an ejectoropening within the outline of said groove, of an ejector iitted in said opening and having a portion of its side constituting a portion of IOO the inner periphery of said groove, substantially as set forth.

17. In turn-buckle-forming machinery, the combination, with a die having an elliptical groove, and also having an ejector-opening within the outline of said groove, of an ejector tted Within said opening and having its ejecting-face flush with the adjacent face of the latter, substantially as set forth.

18. In turn-bnckle-for1ning machinery, the combination, with a die having projecting central and marginal face portions and an elliptical groove intermediate thereof, of an ejector fitted in an opening formed invsaid projecting central face portion, substantially as set forth.

19. In turn-buckle-forming machinery, a die having a groove of turn-buckle form, and also having a punch=groove located at one end of and parallel with the plane of said first-mentioned groove, substantially as set forth.

20. In turn-buckle-forming machinery, the combination of two dies having registering grooves of turn-buckle form, and also having registering end punch-grooves parallel With the planes of said first-described grooves, snbstantially as set forth.

2l. In turn-buckle-forming machinery, a die provided with an elliptical groove having enlarged end portions, and also provided with punch-openings connecting with said end portions, substantially as set forth.

22. In turn-buckle-forming machinery, a die having a groove of turn-buckle form, and also having a projecting marginal face portion provided with two punch-openings 1ocated parallel with the plane of said groove and respectively connecting with the longitudinal end portions thereof, substantially as set forth.

23. In turn-buckleforming machinery, the combination of two dies, each said die having an elliptical groove provided with enlarged end portions, substantially as set forth.

24. In turn-buckle-forming machinery, the combination of two registering dies, each having an elliptical groove with enlarged end portions, each said die also having two punchopenings respectively connecting centrally with said end portions parallel with the plane of said groove, substantially as set forth.

In testimony that I claim the foregoing to be my invention I have hereunto set my hand this 3d day of December, A. D. 1887.

CLIFTON B. BEACH.

Witnesses:

J. B. FAY, E. J. CLIMo.

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