US1233994A - Machine for taper-forming. - Google Patents

Description

R. F. DOW. WIACHlNE FOR TAPER FORMING. APPLlcATloN FILED mm2?. |916.

R. F. BOW. MACHINE ma TAPER FoRMlNG. APPLlCATlON FILEDy MAK. 2?. ISIS. N n

Patented July 11., 1914.

2 SHEETS-SHEET 2 A Jmwwmwm lill m RICHARD F. DOW, OF HARTFORD, ONNIECIICTJ'T,` ASSllG-NOR TO FRATT & WHITNEY COMPANY, F HARTFORD, CONNECTICUT, A CORPORATION 0F NEW JERSEY.

MACHINE FOR TAPER-FORMING'.

t manana.

Specification of Letters Patent.

Patented July llt', 191'?.

Applicaticn led March 27, 1916. Serial No. 86,843.

To all whom z't may concern:

Be it known that I, RICHARD F. Dow, a citizen of the United States, residing at Hartford, in the county of Hartford and vState of- Connecticut, have invented certain new and useful Improvements in Machines g for Taper-Forming, of which the following is a specification.

rllhis invention relates vto machines for taper-forming. A machine involving the invention can be used with advantage in various arts; for example it can be employed to'act either on metal or on wood. Among which a taper can be rapidly and the principal objects of the invention are the provision of an apparatus of the kind set forth which is effective in action and by accurately formed on a blank or anything else for that matter. There are other features of novelty and advantage which with the foregoing will be stated at length in the following description of that form of embodiment which I have selected for illustration in the drawings accompanying and forming part of the present specification. myself to this disclosure; ll may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings:

Figure l is an elevation from the front side of the principal parts of a machine em- 'bodying the invention. v

Fig. 2 is a 'longitudinal central section of the spindle, bearing means therefor, and certain of its adjuncts, the intermediate portion of the spindle being removed.

Fig. 3 is a transverse-section on the line 3 3 of Fig. 2, looking inthe direction of the arrow.

Fig. 4 is a transverse sectional view on the line 4-4 of Fig. 1, looking in the direction of the arrow applied to said line.

Fig. 5 is an elevation as seen from the right'in Fig. 1. ofthe spindle, a swiveled yoke supporting the spindle and certain cooperating devices hereinafter described.

Fig. 6 is a side elevationfof a portion of the taper barand certain cooperating elements hereinafter more particularly described.

Like characters refer to like parts throughout the several views, which it will be noticed are on dierent scales.

, The different parts of the machine may be shown the crank 8 being shown to -ticular function.

ll 4do not limitl tudinally of the carriage supported by ,any suitable framework; that shown includes in its organization the base or bed 2 having on its upper side suitable Ways for supporting the carriage or slide 3 for reciprocation in a horizontal direction. In the present case the blank or article to be'tapered and the taper bar are both carried by this carriage orslide, although this may not be so in all instances. The carriage may While the action may, be automatic `it is as being manual. carriage has on its under side the rack t suitably rigidly attached thereto (Figs' l and 5) with which the pinion 6 meshes. This pinion may be rigid with the shaft 7 i supported by the base or bed 2 and provided for turning it,

with some suitable'means obtain this par- On the turning of the crank 4in one direction the carriage 3 is advanced toward the on opposite movement of the crank the carriage is retracted through the agency of the intervening described parts. I might state at this time that on the advance movement of the carriage the cutter hereinafter described acts on the blank or work.

0n the upper side of the carriage 3 and extending longitudinally thereof are the companion flanges 9 and 10 adapted to receive between them the pillow member 11, the.

blank 12 being adapted to lie in the pillow member 11. This pillow member snugly fits between the flanges 9 and 10, and one of its sides is cut away to provide for the inner ends of one or more screws as 13 tapped through the flange 10 to engage against the work or blank 12 to force the same solidly against the inner wall of the pillow or blank supporting member 11. The flanges 9 and 10 with the coperating devices Just described constitute a suitable vise for holding the work or blank l2 in a solid and substantial manner, the work and the workingholding means, as shown, extending long1- 4 3 and necessarily in the line of movement of the latter. For additional security the work may be overhung by clamping plates 14.- fastened suitably as by screws 15 to the upperflat edges of said flanges 9 and 10. convenient way of holding As already cut and to secure this particular result a the work.

be operated in any desirable mannen As illustrated the observed, the work is a taper right in Fig. l, whereas his 1s merely one end may receive suitable templet or taper bar as 16 may be provided, this taper bar being inclined upwardly toward the tail end of the machine. It is stationary on the carriage or slide 3. As shown itis fastened to the laterally extending base portion 9. of the vise member 9. This taper bar is merely one of several types of templets or patterns which answers the necessary purpose.l ofv a radically'diiferent character could be utilized. There may be in fact instances where the work'at zones would require reliefs and the active surface of the templet or taper bar 16 can be shaped to secure this particular condition. The taper bar and the work are therefore, in the organization illustrated both rigid with the carriage 3, but as will be obvious, this may not be necessary in all cases,l although it is of advantage.

To cut the work, a cutter or blade as 17 may be provided. This cutter or blade 17 as shown is sustained byV a spindle as 18. The body of the spindle'is hollow and its inner the plug 19 suitably rigidly connected with the hollow body as by the pin 20. This plug 19 is shown supported for rotation in an opening in the pendent bearing 21 of the arm 22 constituting a suitable carrier for the spindle. The spindle between its ends is sustained by a Asecond bearing 23 also depending from the carrier 1 is rotative.

, crumed tothe bracket 32 or arm 22.v Said carrler 22 isfurther provided with a fork 24, the branches of which have bearings 25 and 26 to receive the spindle 18. In the present instance the spindle As shown the elongated bearing 26 is pivotally supported as by the pivot 27 between the upstanding branches of the yoke 28 swiveled as by the pivot 29 to the upper side of the base or bed 2. view of this condition the spindle carrier 22 is susceptible of universal movement turning about a horizontal axis (the pivot 27) and a vertical axis presented by the pivot 29. For rotating the spindle 18' any suitable means may be provided, said spindle having fastened to it in some suitable way the pulley or band wheel 30 (Fig. 1) shown for this urpose. As represented the pulley is located between the branches of the fork 24. Its operating belt is not, however, shown.

During work the carrier 2 2 or a suitable member associated therewith is in contact with the taper bar or templet 16, and this contact vcan be secured in any desirable -manner as by means of the hand lever 31 ful- (Fig. 1) rising from 'and rigid with the bed 2, said hand lever 31 between its fulcrum and' handle 33 being pivotally connected as at 34 to the spindle carrier 22 near the free end thereof. By pressing therefore, downwardly on the handle 33 a pin or equivalent member connected with the spindle carrier can be held in engagement with said taper bar. To

As will be clear others.

l' lever 33 downv maintaining present case is n channnel or to nish a previously formed advancing and retractlng (Fie .n`

elevate the carrier 22 and therefore to move said pin (hereinafter described) away from the taper bar any suitable means may be provided. For this purpose-I have shown the spring 35 connected as by one or more screws or bolts 36 to the head end of the base 2 and also connected to a band or collar las 37 fastened to the carrier 22 adjacent the free end thereof. The constant tendency of this spring is to swing the arm or car rier 22 upwardly,the operator by holding the the said carrier in operative relation. When the attendant frees the lever, the spring 35 will at V once lift, the carrier 22 so as to carry the same out of `lengagement with the taper bar as will hereinafter more particularly appear.

The cutter or knife 17 in the present'case revolves b and on the rotation of the spindle 18 which carries it. In addition to this revoluble movement of the cutter or knife, it has a progressive advance which in the outward in order to form a channel to the requisite contour, which in the present case is tapered. Said knife or cutter may be advanced in any desirable manner, although the means shown for this urpose is satisfactory. I should also state that the hollow body of the spindle 18 at or near the inner -end thereof and adjacent the plug 19 is furnished withdiametrically opposite slots 38 which receive the shank of the cutter or knife 17 for sliding movement radially of the spindle 18. Extending longitudinally of said spindle is the rod 39 movable longitudinally of the spindle for the cutter or knife 17. This rod 39 is provided at its inner end with a tubular head as 40 constituting a part thereof and connected thereto in any desirable manner as by the pin 41. This head 40 .as shown is provided with the diagonal or oblique extension 42, fitting the correspondingly formed notch or slot 43 (Fig. 2) in the shank of the cutter or knife 17 From this it will be clear that if the rod 39 be advanced relatively to the spindle 18, the knife or cutter 17 will be correspondingly ad vanced owing to the action of the oblique extension-42 acting against one of the walls of the slot or notch 43. It might be stated that in the showing the advance of the rod 39 is toward the left in Fig. 2, and it will, therefore, be clear that in this same View the cutter on its advance moves downward. On retraction of the rod 39 thelmife or cutter 17 is correspondingly retracted.

As may be clear the' advance of the cutter or knife 17 is secured primarily through the templet ortaper bar 16. It willbe clear that in the construction shown the cutter or knife 17 on its advance moves toward the work. Connected with the free end of the spindle carrier 22 is a bracket 44 to slidingly receive rasante the pin 45 a member suitable for coperation with the taper bar 16. As .illustrated the pin 45 moves in a direction at right angles or approximately so to the axis of rotation of thespindle 18.

in any desirable manner. The means shown for this purpose andy now to be described are satisfactory. The upper end of the pin 45 is adapted to engage the rock arm 46 connected to and extending inwardly e from the rock shaft 47, the crank 48 dependinner end in the bore 58 in the outer end of the body of the spindle 18. The tube 56 in the present case is slidable said bore. The

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l to straddle the 4reduced the branchesof the .to iongitudinally 56 and therefore the rod 39 yieldingly in their retracted posi- Fig. 2.a The ceived in the reduced part of the sleeve 55, said bushing being rigid in the bearing 26.

he extreme forward end of the tube 56 is threaded to receive the nut 61 through a perforation in the outer closed head of which the rod 39 extends, stop collars as 62 being fastened as by pinning to saidrods at opposite sides of and engaging the head of said nut 61. From this it will be clear that not only the rod39 and tube 56 are connected together for movement as one, but. that the rod 39 may be adjusted longitudinally ofthe spindle 18 by the'turning of the nut 61. rlllie bushing 60 is non-rotative in the bearing 26 and the tube 56 as shown is spindle 18, so that when the nut 61 is turned adjust the rod 39 in the manner aforesaid, the tube 56 will not be rotated.l The shifting element 53 is forked part of the sleeve 55,. ork abutting against the head orenlarged portion of saidsleeve, the consequence being that as the pin 45 is elevated as will hereinafter appear, the fork 53` keyed in the is advanced or moved toward the left in Fig. 2 so as to effect the movement through the intermediate parts of the rod 39 toward the thrust to the cutter or knife 17.

The action of the machine is as follows: It will be supposed that'the slide 3 is in its retracted position, that the knife or cutter 7 is in its retracted position and that the arm ,or carrier 22 ,has been swung down through the manipulation of the lever 31 to carry the pin 45 against the forward end of the taper bar 16 andto position the knife It will also be supposed that the spindle 18 is being rotated so as to cause a revolution of the cutter 17. In Fig. 1 the slide 3 has just commenced its advancing movement in e carriage advances and as the spindle 18 rotates, the cutter will be caused to revolve and its cutting end will follow the transverse radius of the channel or groove in the Work 12. As the slide 3 and work 12 advance, the taper bar 16 moving with them, the rise ofthe taper bar or the active surface thereof will elevate the pin 45 and therefore through the intermediate described parts advance the cutter 17 so that the grooveor channel in the work 12 will be tapered longitudinally, the groove being gradually deepened as the work and taper bar advance with the slide. At the conclusion. of the cutting operation the attendant will release the lever 33, so that the spring 35 can automatically lift the carrier 22 to thereby move the cutter 17 away from the work 12 and the pin or finger 45 away from the taper bar at which point the carriage or slide 3 can be retracted through the agency of the crank 8, and slide is in its backward position, the work can be taken olf and a new piece put in its stead at which time theoperation described will be repeated. v

As the rod 39 is advanced throughV the the forked vshifting element 53 and `sleeve 55, the spring 59 is compressed so `that when the advancing movement is concluded the spring as soon as from the taper bar 16 As will be obvious ll do not lfmit myself to any specic construction forfcig'lrying the invention into effect. I might note for examplel as one ofV man obvious departures that while the taper ofythe bar 16 is upward and outward, this is an inconsequential matter, for the taper mi ht be oppositely reversed. 1 have alrea 17 and pinV 45 to the initial positions thereof.y l

y mentioned the fact 13o 65 AAcombination that the taper bar may be of such nature as to secure at one or more intervals in the work a relief or reliefs. In like manner While the taper bar 16 has its incline straight, this may not in all instances be required. I also Wish to allude to the fact that the channel in the stock 'is not only tapered longitudinally but laterally. v

What I claim is:

1. In a machine of the class described, the combination of a revoluble cutter, Work supporting means, the cutter being adapted to operate upon the work, means for eecting the relative movement of the cutter and the work in the direction of the axisof Vrevolution of the cutter, a templet, and a member supported independently of the cutter and adapted to traverse the active face of the templet, and means for transferring the effect of said member to the cutter to move the cutter toward the work on the relative movement of the cutter and the work. A v

2. In a machine of the class described, the combination of a revoluble cutter, work supporting means the cutter being adapted to operate upon the work, means for effecting the relative movement of the cutter and ,the work in the direction of the axis of revolution of the cutter, and means involving a taper bar stationary with respect to the work, for moving the cutter towardthe work during the relative movement of the vwork and the cutter. 35 3. In a machine of the class described, the

combination of a rotary spindle, a cutter supported by said s indle for movement transversely thereof, earings sustaining the spindle, thecutter being situated between 4g the bearings, means for supportin work to be acted on by the cutter, means or effecting the relative movement of the work and the spindle in the direction of the axis of rotation of the spindle, and means for eifecting the 'movement of the cutter during the entir'e relative movement of the spindle and the work to thus taper the work throughout its length. I

4. in a' machine of the dass escribi-nahe combination' of a rotary spindle, acutter supported by said spindle for movement transversely thereof, bearings sustaining the spindle, the cutter bein situated between the bearings, means or supporting work to be'acted on 'by the cutter, means for effecting the relative movement of the work and the spindle in the direction of the axis of rotation o the spindle, and means involving a templet for -effecting the movement of so the cutter toward the work during said entire relativemovement of the vwork and the spindle to thus taper the work throughout its ""entire length.

' 5. Ina machine of the class described, the of a rotary spindle, acutter .able transversely thereof,

.cutter movable relatively thereto,

closed. by thespindle and provi supported by said spindle for turning movement therewith, work supporting means, the cutter being adapted to operate upon the work, means for effecting the relative movement of the spindle and the work in the direction of the axisof rotation of the spindle, and means involving a templet stationary with respect to the work for movingthe cutter toward the work during the relative movement of the work and the spindle.

6. In a machine of the class described, a rotary spindle provided with a cutter movably supported spindle mounted for reciprocation, and means for moving said cutter transversely of the spindle during its rotation and during the complete advancing movement of the carrier.

7 In a machine of the class described, a rotary spindle provided with a cutter movmeans for moving the cutter with respect to the spindle a movably mounted carrier for the spindle, spring means acting against the carrier to move the s indle to inoperative positron, and manual y operable means for operating the carrier in oppos tion to said spring combination of a reciproeatory slide prol vided with work holdin means and with a taper bar, a rotary spin e provided with a the cutter being adapted to act on the work during the reciprocation of the slide, a pin to be engaged and operated by the taper. bar on the advance movement of the slide, and means actuated by said pin for effecting the movement of said cutter toward the work on the advance of said slide.

10. In a machine of the class described,

the combination of a 'reciprocatory slide provided with woork holding means and with a taper bar, a rotary spindle provided with a cutter movable relatively thereto, the c utter being adapted to act on the work during the reciprocation of the slide, a pin to be engaged and operated by the taper bar on the advance movement of the slide, a rod in- 'ded with means for operating the cutter with respect to the spindle, and means actuated by said pin for advancing said rod to eifect the corresponding movement of the cutter toward the work.

11. In a machine of the class described, the combination of a reciprocatory slide provided with work holding means and with :nassen a taper bar, a rotary spindle furnished with versely movable cutter a rod inclosed by a cutter movable relatively thereto, the cutthe spindle and provided with an oblique ter being adapted to act on the Work durextension, the shank of the cutter having a ing the reciprocation of the slide, a pin to correspondingly shaped slot to receive `said be engaged and operated b the taper bar extension, spring means for retracting the 20" on the advance movement o the slide, a rod rod and thereby the cutter, and independent inclosed by the spindle and provided with means for advancing the rod and thereby means for advancing and retracting the cut- 'the cutter with respect to the spindle.' ter, spring means acting against the rod to In testimony whereof I affix my signature retract the same, and means actuated by said in presence of two witnesses. pin for eecting the advance of lsaid rod RICRD 1F. DUW.

and therefore the movement of the cutter toward the Work on the advance of the slide. Witnesses:

12. In a machine of the class described, L. L. m.,

1 a rotary spindle provided with a trans- AHearn SHEimAnD..

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