US469977A - pereins - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

J.. B. PERKINS. MACHINE FOR FINISHING THE EDGES 0P TUBE BLANKS. No. 469,977. Patented Mar. 1, 1892.

WITNESSES (No Model.) 3' Sheets$ heet 2.

J. B. PERKINS. V MACHINE FOR FINISHING THE EDGES OF TUBE BLANKS.

No. 469,977. Patented Mar. 1, 1892.

WI TJVESSES (No Model.) 3 Sheets-Sheet 3.

J. B. PERRINS.

MACHINE FOR FINISHING THE EDGBS 0F TUBE BLANKS.

No. 469,977. Patented Mar. 1, 1892.

. .llllH UNITED STATES PATENTOFFICE.

JOHN B. PERRINS, OF SEYMOUR, CONNECTICUT, ASSIGNOR TO THE SEYMOUR MANUFACTURING COMPANY, OF SAME PLACE.

MACHINE FOR FINISHING THE EDGES OF TUBE-BLANKS.

SPECIFICATION forming part of Letters Patent No. 469,977, dated March 1, 1892. Application filed August 21, 1891. Serial No. &O3.3 31. (No model.

To all whom it may concern: forms no portion of my present invention, I

' le it known that I, JOHN B. PERRINS, a have omitted feeding mechanism and have citizen of the United States, residing at Seysimply illustrated the operative parts of the mour, in the county of New Haven and State machine,itbeing understood that tube-blanks 5 of Connecticut,have invented certain new and may be fed to the machine in any suitable or useful Improvements in Machines for Finish-' preferred manner.

ing the Edges of Tube-Blanks; and I do here 1 denotes the bed of the machine, which is by declare the following to be a full, clear, supported upon suitable legs 2.

and exact description of the invention, such 3 is the shaft, to which power is applied by 10 as will enable others skilled in the art to which a belt (not shown) running over a pulley 4.

it appertains to make and use the same. This shaftis journaled in boxes 5 upon stand- My invention has for its object to produce ards 6, extending upward from the bed. amachine slmpleand inexpensivein construc- 7 is a vertically-movable frame consistlng,

. t-ion and rapid and effective in operation for preferably, of side bars 7, with a web 7 bei 5 finishing the edges of tube-blanks preparatween them. Both ends of the sidebars are tory to brazing or soldering. provided with boxes 8, one end of the frame It is of course well understood by those being supported by shaft 3, which passes familiar with the art that the brazed tubing through the boxes at that end. of commerce is made by rolling a suitable 9 is a shaft journaled in the boxes at the 2o strip of metal into cylindrical form and then other end of the side bars, and 10 is a rotary brazing the edges together. As it is found cutter carried by said shaft. The special necessary in practice to smooth off and bevel form of the cutter is not of the essence of my the edges of the blanks before brazing, it has invention. It is sufficient to say that the cutbeen customary for an operator to finish both ter is a disk provided on its periphery with 25 edges by hand with a scraper. This ope'rasuitable cutting-teeth 10. Power is applied tion adds seriously to the cost of production,- to this shaft by a belt (not shown) extending as considerable time is consumed in finishfrom a pulley 11 on shaft 3 to a pulley 12 on ing the edges of the metal, the expense being shaft 9. p greatly increased, furthermore, by the fact 13 is a standard projecting upward from 30 that the operation of finishing the edges can the bed, to which it is rigidly secured by bolts only be performed by skilled workmen. 1t. At the upper end of this standard is a M y present machine dispenses entirely with curved slot 15. a hand labor in finishing the edges of metal 16 isan enlargement cast upon one of the and produces. very much better results, as, arms 7, and 17 astud extending outward from 35 both .edges are not only finished perfectly this enlargement and passing through slot 15. smooth,but are left straight and parallel from The outer end of this stud is screw-threaded end to end. and is engaged by a lock-nut 18, which is I will now describe my novel machine, repreferably provided with a handle 18 for ferring by numerals to the accompanying convenience in operation. Should it be re- 4o drawings, forming part of this specification, quired at any time to raise or lower the cutin which ter, lock-nut 18 is loosened and the frame Figurel is aplan view; Fig. 2, a side elevaraised or lowered, as may be required to place tion; Fig. 3, an end elevation as seen from the cutter in the desired position. The parts wthe left in Fig. 1; Fig. 4, a perspective of are then locked in position by tightening up 45 a short piece of tubing with the edges finthe lock-nut, and do not require to be changed ished ready for brazing, and Fig. 5 is a dein use unless tubes of another size or-uneven-' tail sectional view illustrating the cutter-adness of slot are to be operated upon. justing mechanism. 19 denotes a set-screw in enlargement 16,

It is quite practicable to feed the rolled the lower end of which is adapted to engage mo 50 tube-blanks to the machine either automatian enlargement 20 (see Fig. 1) on the inner cally or by hand. As the feeding mechanism side of standard 13 and serves as a stop to limit the downward moyement of the frame. This stop is simply a safeguardto avoid the possibility of the cutter dropping down and l the teeth being damaged: by contact with some portion of the machine should lock-nut 18 become accidentally loosened, and more especially when the lock-nut is not used at all and the frame and cutter are controlled by a foot-lever 21.

22 is a lever, one endof which .ispivoted between ears 23 (see Fig. 2, in connectionwith dotted lines in Fig. 1) on the under side of one of the side bars 7.

24 is a rod extending up through the bed of the machine, one end of which is connected. to the opposite end of lever 22 and the other to the foot-lever. Lever 22 has its fulcrum on a stud 25 at the upper endof a.link 26, the lower end of which is pivoted toa boss.27, extending outward from standard 13. When it is not desired to use the foot-lever, the

frame is adjusted in the manner already de-; scribed to place the cutter in operative position and lock it there. For many classes of;

work skilled operators prefer not to havethel frame locked in position, but subject to the control of the foot-lever. Under such circumstances the lock-nut is not used.

In inserting a tube the operator raises the cutter by means of the foot-lever, and in the same manner retains the cutter in operative position while finishing the edges of a blank, it being of course apparent from Fig. 2 that downward pressure upon the foot-lever will raise the cutter. The engagement of stop 19 with enlargement 20 prevents the possibility of injury to the cutter should it drop down.

In order to insure that the frame and cutter shall respond instantly to the movements of the foot-lever, I provide a spring 52, one end of which is connected to the bed, the other to the frame, (see Figs. 1 and 2,) so that when the foot-lever is pressed down the upward movement of the frame and cutter will be against the power of this spring, which will act to draw the frame and cutter downward.

the instant pressure upon the foot-lever is relieved.

The tube to be operated upon is passed into the machine in either direction and rests upon supporting-rollers 28, carried by yokes 29 at opposite ends of the machine. The yokes are provided with shanks 30, which extend down through the bed of the machine and are provided near their lower ends with pins .31. These pins engage oblique. slots in;a slide 33, supported by guides 34 under the bed. The outer end of this slide is given a half-turn and is pivoted to a hand-lever 35 at'the end of the machine. It will be seen that oscillation of this lever will act to raiseor lower the I yokes and rollers 28 simultaneously. The tube while being acted upon-by the cutter is held against lateral movement byguide-rollers 36, carried by slides 37,snpported bysuitable brackets 38, which are castintegralwith or.

rigidly secured to the bed. The special form of these brackets is of course nonessential. InFjgBIhave shownthe brackets as cast integral and connected at the bottom, shank 30 of the yok'h at this end of the machine ported thereby. Theouterv ends of slides 37 passing through the casting and being supare bent at right angles to receive adj ustingscrews 39, which are threaded to engage the brackets, the angular portion of the slide bcing held between collars 40. so that rotation of the ad justing-screws will move the slides, and with them the guide-rollers, in or out, as may be required. i

41' denotes hand levers upon the a'dj ustingscrews 'for convenience in operation.

In order to retain the tube against the slightest oscillatory movement qvhile; it is being operated upon, I provide rollers 42, made thin'enough to pass between the-edgesof-the blank, and place oneof said rollersuponeaeh side of the cutter. These rollers arec'arried by arms 43, extending inward from vertical slides 43, which move in ways on opposite sides of one of f the brackets 38, the right bracket being shown in Fig.3. This right bracket is provided with a vertical slot-.44 through it from the front, as seen in Fig.3, said slot appearing only in dottedlines in said figure, as it is covered by plate 43, and with a vertical slot 45, at rightangles thereto, said slot 45 entering from the front, as seen in-Fig. 2, and intersecting slot 44. 1 I

46 denotes a cross-piece lyingdnsloti l t, the outer ends of which are reducedandscrewtoo threaded to receive nuts .47. JI-hesenuts act to clamp slides 43 against thesho'ul'ders where the reduced ends of thecross-piece terminate, so that when saidcross-piece is moved .up or downsaid slides, and with them rollers 42, are moved up or downalso.

48 is a bolt in slot 45, the innerendof which engages the cross-piece, and 49 is a link, one end of which is pivoted on bolt48 and the other ona bolt 53,-which passesthrougha-slot 50 in a hand-lever 51, whichisitselt .pivoted on a bolt 54, engagingthe bed. It will beseen that oscillation ofthe hand-lever will act to raise the link 49' and bolt .48, and with it the cross-piece and slides 43,'carrying rollers 42 up or down, as may be requiredfor purposes of adjustment. 7

It will of course be apparent that the details of construction may be varied to an;al most unlimited extent without departing from theprinciples of my invention.

1. The combination, with vertically-adjustable rollers 28 at opposite ends of the machine for supporting the .tube to be operatcd upon' and laterally-adjustable guide-rollers 36 for holding it against-lateral movemenn-of, avertically-movable frame, -a-rotary cutter carried by said. frame, and means,substantiallyas described and shown, for raisingand lowering the cutter.

2. The combination, with the adjustable rollers 28, by which the tube is supported in use, and adjustable rollers 36, by which it is held against lateral movement,-of a vertically movable frame, a rotary cutter carried by said largement 16 and a stud 17 projecting there-.

from, and the rotary cutter carried by'said frame, in combination with a standard 13, having a eu rved slot, through which said stud passes, and a nut 18, engaging said stud to lock the frame and cutter in any required position.

4. In a machine of the class described, the vertically-movable frame having an enlargement 16, a set-screw 19 in said enlargement, and a rotary cutter carried by said frame, in combination with a standard 13, having an enlargement 20, adapted to be engaged by the set-screw to limitthe downward movement of the frame, a spring 52, actingto draw the frame and cutter downward, a lever 22, pivoted to the frame, and a foot-lever and intermediate connections whereby the frame and cutter may be raised against the power of the spring. i

5. The combination, with the verticallymovable frame, the cutter, and adjustable guide-rollers 36, of supporting-rollers 28, yokes in which said rollers are mounted and which are provided with shanks 30, having pins 31, and slide 33, having oblique slots 32 engaged by said pins, so that movement of said slide will act to simultaneously raise or lower the supporting-rollers, as may be required.

6. The combination, with the verticallymovable frame, the cutter, and adjustable supporting-rollers 28, of guiderollers 36, slides by which theyare carried, brackets by which said slides are supported, and adj usting-screws engaging said slides, and brackets by which the guide-rollers are adjusted.

7. The com bination, with the verticallymovable frame, the cutter, and means, substantially as described and shown, for holding and guiding the tube-blank, of rollers 42, which pass between the edges of the blank, slides 43, having arms by which said rollers arecarrie'd, a bracket having a vertical slot 44 through it and an intersecting slot 45 at right angles thereto, a cross-piece 46, lying in slot 44, to the outer ends of which said slides are secured, a bolt in slot 45, engaging the cross-piece, a link pivoted to the outer end of said bolt, and a hand-lever pivoted to said link, whereby the cross-piece, and with it the slides and rollers, may be raised or lowered simultaneously.

In testimony whereof Iaffix my signature in Dresence of two witnesses.

JOHN B. PERKINS.

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