US909644A - Machine for forming bars or rounds from metal plates. - Google Patents

Description

S. MGCLOUD.

MACHINE EOE EOEMING BARS 0E EoUNDs EEoM METAL PLATES.

v APPLICATION FILED 909,644.

Patented Jan. 12, 1909.

) l WWII".

l MCG/L s. MGCLOUD. l MAGHINE FOR EORMING BARS 0R ROUNDS FROM METAL PLATES.

APPLICATION FILED MAR. 30, 1908.

Patented Jan. 12, 1909.

2 SHEETS-SHEET 2.

l; Mana/f MAW Mx@ SIDNEY MCGLOUD, OF CHICAGO; ILLINOIS'.

MACHINE RORFOR'MING :BARS` 0R: ROUNDS FROM METAL PLATES.

Naseem,

Specification of Letterslatent;

Patented Jan. 12, 1909.

Applcation-ledbfarh 30, 1908. Serial'Nb. 424,038.

To all.' whom. 'it may. concern.:

Be it knownthat I, SIDNEY MoCLoUD, a citizenofr the UnitedStates, and a resident of; Chicago, Cook. county, Illinois, have. in

vented certain new and useful Improvements. in Machines for Forming Bars or Rounds:V from Metal Plates, of which the following is a description.

My. invention has for its object the production of. a machine for. rolling. bars or rounds from metal plates, from which bars or rounds springs or other articles may be formed, and: which are much stronger and more durable than the material out of which said articles are made at the present time.

Itis a well known fact that the bars from which springs or the like are at present made are not of exactly the same composition throughout, there being spots which contain too much or too little carbon, and where thereisA an excess ofA carbon the material is more brittle: and willv break more; readily, thereby rendering. the bar, or the. article formed therefrom, useless. For the purpose of. overcomingl this difficulty I have designed aA machine for formingA bars or rounds from. metal plates by rolling or winding. said plates aroundthemselves.

In carrying out this invention I contemplate rolling a single plate upon itself or rolling a pluralit of plates together. As will be observed 1n the drawing when the bar. is completed it is composed of a plurality oflayers,.and in case of a shock or jar suiiicient to break the bar at a weak spot, one la. er only will be broken and the remainder ofy the layers will remain intact, and. the bar isnot materially weakened. The metal out of which these bars or rolls are made being. wound or. wrapped at a heat which does not weld: the same together allows a modicum offriction between the layers, thereby producing a bar of greater compression andtensile strength.

In the accompanying drawings forming part of this specification, and 'in which like letters of reference indicate corresponding parts I have illustrated one form of device illustratin the principle of my invention, although t e same may be carried into effect in. other ways without departing from the spirit thereof, and in' thesedrawings: Figure 1 is a top plan view of a machine embodying my invention; Fig. 2 is a vertical longitudinal section taken through the center of Fig. l; Fig. 3 is a sectional View taken on the line 3 3 of Fig. l; F ig. 4L is a sectional view taken on the line 1-4 of Fig. l; Fig. 5 isa sectional view taken on the line 5 5 of Fig. 1; Fig. 6 is a sectional view taken onthe line 6--6 of Fig. l; Fig. 7 is a perspective view of a bar orv round formed by winding a plate of metal spirally upon itself.

Upon the bed A of the machine and within suitable journal bearings are sustained the rolls B and C, which receive the plates of' metal from which the bars or rounds are to be'formed, and which give to such plates a concavo-convex shape when passed. therethrough.

The roll B is preferably of spherical'contoursand the roll4 C has its periphery formed with a groove corresponding in outline to the surface ofthe roll B. These rolls B and C are driven by suitable gearing, arranged. in any wellv known manner.

After the. plate has passed through the rolls B and C and has been bent. transveasely of the plate, it passes into a former by which a. further bending. is effected, as hereinafter described.

D is a guide supported above. the bed A of the machine, and which extends above the.

path of the plate D as it leaves the rolls B and At the end of this guide D are the forming rolls E, E. The roll E is provided upon the periphery thereof with a groove corresponding in outline to the bottom of the plate D after it has been bent to the concave-convex form by the rolls B and C.

The roll E is provided upon the periphery thereof with two circumferential grooves, one of which is smaller than the other. As the metal plate D leaves the bending rolls B and C it passes between the forming rolls E, E', the edges e, e of said plate being turned inwardly by the grooves upon the former E, and folded so that one edge overlaps the other, as shown more clearly in t the rear of the forming. rolls E, E', I have arranged. a. pair of reducing rolls F, F', which are supported vertically in suitable bearings above the .bed A and which are driven by appropriate gearing. Each of said rolls has a circumferential groove f f', throughwhich the curved plate 1s passed as shown more clearl in Fig. 5. The curved metal plate is furt er turned upon itself between these rolls and crowded more closely to ther. The com ressing and finishing ro ls G, G', are suita ly mounted at the rear of the machine and are arranged at a roger distance from the reducin rolls F, These rolls are provided wit ooves g, g u on the periphery thereof. A ter the metal p ate has been formed into a s iral and is passed to the finishing rolls the ayers of the metal plate are wound closely together as shown at H in Fig. 6 so that as the bar leaves the machine it is coiled as shown in Fig. 7. The different rolls may be made adjustable with relation to each other in any desired vscope of my invention to form such manner so that when itis desired to roll a bar or round of metal which shall not be tightly coiled upon itself as shown in Fig. 7 the sald metal plate may be wound so that a hollow is left in the center thereof throughout the entire length of the bar.

Fromthe foregoin descri tion it will be seen that the platepo metal rom which the bar or round is to be formed passes throu h a plurality of stages in which it is gradua y 'bent from a flat plate to a concave-convex form, after which its edges are bent so that by pressure they will overlap each other, after which it is passed throu h the reducing rolls and the metal more close y wound upon itself. The compressin and finishing rolls then press the coils oft e metal plate until the finished article is produced as shownin Fi .'I.

'Ihe precise details of construction above set out may be varied without departinflr from the spirit of my invention and to such details, therefore, I do not Wish the invention to be understood as restricted. Thus, for example, while I have shown the rolls E as formed with two grooves, such roll might be formed with a single groove without departing from the spirit of my invention. SoV also,

'while I prefer that the circumferential grooves correspondin to the turned edges e, e of the former s ould be formed in a roll, I would still regard it as within the grooves in a non-revoluble body.

I claim: Y 1. Ina machine of the character described the combination of rolls for bending a metal plate transversely, means for curving the same to overlap the ed and means for further curving and re ucin the plateto the form of a coil, as set forti. 2. In a machine of the character described,

-the combination of means for bendin a metal plate transversely, means for furt er curving the ,same to overlap the edges, and

reducing rol-ls for coiling said plate tightly es upon itself.

3. In a machine of the character described, the combination of means for bendi a metal plate transversely, means for furt er curving the same to overlap the edges, and reducing rolls for coilingrsaid plate into aY substantially solid bar. Y

4. In a machine of the character described, il I forming rolls, a roll having ooves of difa machine of the character described, 'y

ferent outline to overlap the e ges of a metal Y plate, and means for further curving and reducing said plate to a tivhtly coiled ar. Y

6. In a machine, of the character described, the combination of rolls for im arting a transverse curve to a metal-plate, t e former having a double grooved roll to unequully p overturn the edges of saidY plate, and means for wrappin said metal upon itself into a tightlly coil bar.

7. n a machine of the character described, the combination of a former for unequally overturning the edges of a metal late, and curving and reducing rolls for coiling said plate upon itself into a substantially solid form.

8. In a machine of the character described the combination of bending rolls for metal plates, forming rolls for curvin of said plate towards each ot er, an a plurality of sets of reducin and finishing rolls for further coiling sai plate u on itself into a substantiall solid piece o metal.

9. In a machine of t e character described, the combination of the bending rolls for metal plates, a ide at the rear of said rolls, forming rolls or turnin the ed es of the metal to overlap each ot er, an reducin and finishing rolls for further coiling saiV plate u on ltself into a substantially solid piece o metal.

10. In a machine of the character VVdescribed, the'combination of bending rolls for metal plate, a guide holding the plate in position, grooved rolls for partially'coiling the edges of said late to overlap each other, and reducing an finishing rolls for further coiling said plate into a substantially solid piece of metal. f

11. In a machine of the character described, the combination of, a former for curving a late of metal, a guide holding the plate to t e bed of the machine, rolls for initially coiling said plate, and means forV rolling said plate upon itself into a substantially solid piece of metal.

12.7In a machine of the character described, the combination of rolls for bending VlllV a metal plate transversely, a former coml In testimony whereof I have hereunto prisinga roll having circumferential grooves signed this specification in the presence of 1o upon thlJ perifhrg.g thereof, onefof salild two subscribing Witnesses.

rooves ein o i erent contour rom t e T ther, said oll adapted to overturn the SIDAEY MCCLOUD-f edges of said plate, and means for coiling, Witnesses: reducing and compacting said plate into a F. H. KING, I substantilly solid piece of metal. CHARLES I. COBB.

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