US508118A - pribnow - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

J. F. PRIBNOW.

SAW SWAGE.

No; 508,118. Patented Nov. 7,1893.

WITNESSES.

n15 NAYIONAL LIYHOBRAFNINQ cuMPANY.

w/uumm'on. o. c.

(No Model.) 3 Sheets-Sheet 2.

' J. F. PRIBNOWJ SAW SWAGE.

Patented Nov. 7, 1893.

as l UNITED STATES" PATENT OFFIcE.

JOHN F. PRIBNOW, OF INDIANAPOLIS, IhIDIAN A.

SAW-SWAG E.

SPECIFICATION forming part of Letters latent No. 508,118, dated November 7, 1893.

' Application filed May 1; 1893. Serial No. 472,524. (No model.)

Be it known that I, JOHN F. PRIBNOW, a

citizen of the United States, residing at' Inas Fig. 2, except that theanvil and its pitmanv dianapolis, in the countyof Marion and State of Indiana, hay nvented certain new and usefulImprovem' its in Saw-Swages, of which the followingis'a"specification.

The object of my'said invention is to produce a machine by which the teeth of saws may be swaged and shaped complete at asingle operation. A machine embodying said invention will first be fullydescribed, and the new features then pointed out in the claims.

Referring to the accompanying drawings, which are made a part hereof,ancl on which similar letters of reference indicate similar parts, Figure 1 is a side elevation of a com?- bined swage and shaper embodying my invention, placed upon a fragment of a saw in position ready for use; Fig. 2 a central vertical sectional view of the same, the anvil or swaging-block therein being shown in side elevation; Fig. 3 a top or plan view thereof; Fig. 4: an under side plan, with the anviland its pitman thrown out from position; Fig. 5 a transverse sectional View and rear elevation as seen from the dotted line 5 5 in Fig. 1; Fig. 6 atransverse sectional view and front elevation, as seen from the dottedline 6 6 in Fig. 1; Fig. 7 a sectional view on an enlarged scale, on the dotted line 577 in Fig. 4, and showing substantially thesame arrangement are swung out and apart from each other; Fig. 8 a transverse sectional view on the dotted line 8 8 in Figs. 1 and 2; Fig. 9 a horizontal sectional view looking upwardly from the dotted line 9 9 in Fig. 1; Fig. 10 an under side plan view of the anvil and adjacent parts; Fig. 11 a top or plan view of the clamping jaws separately, on a somewhat further onlarged scale; Fig. 12 a side viewof the same, and Figs. 13 and 14 front and rear elevations thereof.

In said drawings the portions marked A represent the main casting or frame-work of the machine; B B the clamping jaws; O a screw by which thejaw B is operated; D the rotary swage; E a lever by which said swage and the anvil operating camare operated; F a pitman running from said 'cam to the anvil-block; G the anvil-block, and II the anvil.

The frame-work A is preferably a single casting, of the form shown, and fitted to receive and support the mechanism and operating parts which are attached thereto, by suitable bolts, screws, and other connections, as shown. Connected thereto by an angleplate A is a bar or tail-piece A which extends out rearwardly therefrom, and carries a yoke A which extends down astride of the saw, and a pin a wherein is adapted to rest upon the top of a saw tooth, thus determining the relation of the machine to the sawin use. The angle-plate A towhich this tail-piece is directly connected, has a slot at, through which one of the bolts a by which said tailpiece is connected thereto, passes, and, by means of this slot and bolt, the machine may be given any angle relative to said tail-piece, which may be desired, within the limit of its adjustment. The machine is thus adapted to operate upon teeth of varying angles. The yoke A by means of a set-screw 0. may be secured at any point desired upon said tailpiece, thus adapting it for use with saws hav ing teeth of various sizes, and, as before stated, itcar'ries the pin a which rests upon the backof. ,a saw-tooth when the machine is in position for use, as shown, and contact with the points of the teeth, which might result in dulling or breaking them, is thus avoided. Upon bne side of the frame A,just behind the lever E, is a segmental plate A secured theretobya screw a and having a projecting rim R, as shown most plainly in Figs. '1 and 8, upon which are stops R and R which-are adjustably secured to any desired p'ositon by set-screws 4" W, as shown most plainly in Fig. 1. These stops limit the movement of the lever E, and, consequently, the operation of the swage and anvil. As will be readily understood, said stops can be ad- 1 justed to any desired points along said rim."

The clamping jaws B and B are placed between the two sides of the frame A at their-ear, and are adapted to clamp against the sides of the saw being operated upon, thus secula points are thus brought up above the swage are supported by said swage. The extreme close to the anvil, and perform an important service in shaping the teeth of the saw. As shown in the drawings, most plainly in Figs. 11, 12 and 13, the corners of these jaws are 5 formed to taper in both directions upwardly and forwardly toward the point of the tooth being operated upon; and thus determine the shape of the sides of said tooth at its extreme point when forced between them by the operation of the swage and the anvil. The sides of the points of the saw teeth, as well as their tops and bottoms,.are thus given an exact shape, and, therefore, need no .further treatment,in the way of setting or otherwise, after I 5 being operated upon by the swage, they not only being spread to a-uniform width, but also given a uniform shape and position relatively to each other and to the saw blade. "It-issometimesdesirable to swage the saw teeth simply, andnot dress or'shape the sides. In order that this may be done by my machine, I prefer, as shown in Fig. 13, totriln off one corner of each of the clamping jaws more than theothers, so that when these corners of said jaws are in position for oprationthey will not come in contact with 'the sides of the points of the teeth, thus'leaving "themroom to be spread to thefull limit of the operation of the swage. I usually provide 0 my maclrine'with several anvils, one ofwhich has i a wide face; and by using the widefaced anvil and these cut 06 corners of the clamping-jaws, my machine does'swagiug of substantially the ordinary sort, but in asupe- 5 rior manner. The other three corners of the *front'ends of theclamping jaws areusually all-alike, but may be varied to operatewith teeth of various proportions. These-corners areall-made in pairs, and numbered,-so that o-by simply turning these jaws over, or shifting them from one side of the-machine to the other, any desired adjustment of the four can be-had. One' of the jaws, B, in operation,

' is held fast to the side of the machine 'A by 5 'a machine-screwb, as shown most plainlyin Fig. 9. The hole in the framethroughwhich this -machine-screw passes is elongated, or in the form of a slot, so that the desired longitudinaltadjustment may be securedyand a.

5: set-screw b may be driven in against said screw, thus holding it to whatever positionis desired. A thin backing plate B is preferably interposed between the jaw B and the frameA; and may be-removed altogether, or

a thicker or thinner one substituted, to properlyadjust the space between the" jaws according to thickness of' the saw to be operated-upon. The two: jawsare alike inconstru'ction, but differently mounted. The jaw Byinstead of-being held fixedly-in place, is "movably held by the swage at the front end,

and by the pin or projection b extending into a socket inits rear end 'froma bearingblock- B 'c-arriedby and adjustably secured bymeansof a bolt b, to a second bearing-block Bfl-which is secured to the frame A by a bolt 13 A set-screw b may operate against thenearer to orfarther from the jaw B.

l to different grades of work.

bolt B to hold it to adjusted position. The bearing-block B is rendered adjustable by means of aslot in the bearing-block B through which the bolt 12 passes, as shown in Fig. 9, and the rear end of the jaw B is thus carried The seat in said bearing block B for the jaw B is angular or tapered, so that said jaw in receding, as the screw 0 is turned back, will also drop away from the swage. This is best shown in Fig. 9 where the jaw B is shown as swung back, its inner corner being in efiect apivot point, and the pin b a guide to keep and thus said jaw B is'moved toward or from the sawbeing operated uponyand' said' saw is clamped between the jaws Band B, or unclamped, by the -movem-ent-of'-said screw. Upon the outer end of said screw is secured -a lever C'by-which it maybe moved back 'andforth. The -various positions -ot this lever are shown in Fig: 1' by meansoffull and dotted lines. In-the position shown in *full lines, the machine has j ustbeeni placed 'upon the saw ready'to be clamped thereon,

and'thedottedlinesindicate the position it occupies after the clamping'has*beeneifected,

and just before andduring the swaging operation.

The swage or die 'D is'in the form of around -rod, and is'rnountedin bearings in'thet'rameworkA, and isadapted t0-rotate therein.

The bearing for this swage or die is'pret'erably a' hardened sleeve D which is inserted ina suitable orifice in said frameA" and surrounds said swage orrdie. 'The centralportion of said swage is'cut away somewhat upon one side, as shown inthe 'dra'wingspmost plainly in" Figs. 2- and 8-;whichgives'it a cam shape at the operating point. 'As will be noticed by anexamination of Fig. 8', this camshaped portion is much longer than theportion of its surface which "operates at any one time -inother-words;than thethickness of any saw. This is for the purpose of giving the swagegreafer' durability,- as it can be shifted alongfrom point to point asit wears, thus presenting a new surface several times 'before it is completely worn out. Or different portions of its surface 'may begiven different forms, thus adapting the same swage This swage is operated by the'leverE, aswill be presently described. Upon this outerend, Whereon said lever is mounted, it is preferablyprovided Wllh' a'number of grooves or corrugations, as

shown in Fig. 1, and a key (1 having a; face adapted to engage withsaid grooves orcorrugations is inserted in a key way cut-in the hub of said lever, and fits into various ones of these grooves. The swage may thus be adapted for different grades of work, by loosening the setscrew e which holds said key, and turningsaid swage somewhat relatively to the handle, and re-tightening the set-screw and key, which will be engaged with different ones of the grooves or corrugations in its surface, so that, when said swage is rotated, varying portions of its surface may 'be brought into active use, and thus different degrees of swaging be given the teeth being operated upon. Said swage supports the forward ends of the jaws B and B as shown most plainly in Fig. 7. T'he'lever E is mounted on the outer end of the swage D, in the manner which has just been described, and'is there fixedly secured by means of a set-screw e which impinges upon the'key d, and forces it firmly against the swage'D, and into engagement with the corrugations therein. For the better support of said lever it is provided with'a hub a surrounding the swage which rests in a bearing formed therefor in a bracket A provided for that purpose, and securedto the frame A. Said lever is thus also supported when the swage or die is withdrawn. The positions of this lever are shown in Fig. 1. The position shown in full lines is that which it occupies when first placed upon the saw.- After the lever O is pulled back, however, and'the machine thus clamped upon' the saw, said lever E is forced forward into the position shown by the dotted lines, which swages the tooth. It not only revolves the swage, but, by means of the link E on the arm F operatesthe anvil, as will be presently described.

The pitman F is driven by a cam F from the arm'F Said'ca'm is mounted upon a rod F passing through arms upon the forward end of the frame A. The cam Fis mounted thereon, and has the arm F formed integrally therewith, or rigidly attached thereto,'and extending out'and connected, by means of the link E'to the lever E, as has just been described. The link E has a hooked end e which hooksover a pin or bolt f 2 on the arm F forming an easily detachable catch, which is held into engagement by a spring f also attached 'to said arm. When said lever is moved, it revolves the cam F around the shaft F thus moving the pitman back and forth to a limited extent, and with it the anvil-block and anvil. The position of these parts,'assembled,is shown most plainly in Fig. 2, and they are shown swung out, and' detached,-on a larger scale, in Fig. 7. The pitman is shown as formed in two parts, one screw-threaded into the other, andlockedin position by a lock-nutf, by which means, obviously, its length maybe very finely and accurately adjusted.

As will be seen by a reference to the drawings, particularly Fig. 10, the anvil is tapered longitudinally. An adjustment of the pitman therefore varies'the width of its operating point. (I prefer to proportion the parts so thatoneturn of the screw will produce a variation equal to on e gage in a saw plate, so that the machine may then be adjusted by half gages (half turns of the pitman) to the saws being operated upon. The end of said pitman which engages with the anvil-block is in the form of a cross-head f, which slips into a corresponding recess in the anvil-block G. The anvil-block and cross-head are obviously capable of transverse movement relatively to each other, which enables the anvil to accurately adapt itself tothe clamping jaws, as the parts come together. A spring S is coiled around the end of the cam F, and is attached at one end to the frame A, and at the other end tothe pitman F, in such a manner as to keep the'anvil-bloc'k always raised up in contact with the pivot-bolt or point G over which it oscillates, and thus keeps the anvil up away from the die or swage, except when forcibly brought down toward it by the operation of the mechanism.

The anvil-block G is constructed to hold the anvil H, and is provided with the recesses by which it may be attached .to the pitman F. One portion thereof (which may be in the form of a-separate piece G) is bifurcated, and adapted to pass .astride the shank of the pitman behind its head f whenthe parts are assembled together. A thin-backing-strip g may be interposed between these parts, which can be removed, and a thinner one substituted (or not) for the purpose of adjusting the device, for taking up wear or. otherwise. A

knob g is usually'provided whereby this an-- vil-block can be conveniently manipulated. A cavity 9 is formed in its upper surface into which the rounded end of a set-screw Gr mounted in the frame A enters, and over this rounded end the block pivots as it is moved back and forth by the pitman. i

The anvilH is formed to come against the top side of the saw tooth, as-the cam surface of the swage enters against the under side.

Its lower surface is struck from a centerslightly in advance of the point of the pivotscrew G and thus, as it moves rearwardly, in operation, its surface approachesthat of the swage D, and two cam surfaces are thus pro- .vided which approach each other during the operation, thus bringing the pressure equally from the two sides, and spreading or swagin g the tooth uniformly. This is a highly important result, as will be readily understood by those skilled in the art. This anvil ismade wedge-shaped in both directions, and'is so adjusted and proportioned -as to exactly fill the space between the two jawsB and B'at the completion of the operation of swaging, so that when said operation is completed, the swage and the anvil have approached closely to each other, leaving a sharp edge on the point of the tooth, and at the same time all the space has been filled by the parts upon all sides of the point of the tooth, giving it an exact and perfect shape. A saw thus treated is capable of efficient use without filing or-any additional treatment whatever.

As has heretofore been explained, however, if the ordinary swaging is for any purpose desired, instead of the complete combined swaging and dressing de scribed, it can be accomplished by having the jaws turned so that the cut away corners will come into use, and providing an anvil of a wider face than the desired point of the saw tooth. The anvil is held inplace on the anvil-block by the bolt H, which may, and preferably does, also hold the part G in place, as shown most plainly in Fig. 7. My improved swage also accomplishes its work in a superior manner in another particular. If the swage proper or die and anvil were moved in the same direction, the result would likely be, especially in saws formed of a somewhat brittle quality of steel, that the points would be drawn upon too hard, and thus broken off. I have arranged that these two parts shall operate oppositely to each other, and thus the whole power of the machine is devoted to swaging or spreading and sharpening the tooth, and does not tend to separate or break it. In other words, while the.

die or swage proper is drawing up toward the point on the under side of the tooth, the anvil is pushing down on the top ofthe tooth in the direction of the root of said tooth, which operation is a positive counter-action to the tendency of the swage or die to pull the point of the tooth in or break it off. It may also besaid that when any part of this machine is to be taken out for the purpose of repair, interchange, or otherwise, it can be done without dismouuting the other parts, or disturbing the adjustments. For instance, the anvii-block and anvil can be disengaged by hearing down and pulling out on the knob g, which brings said parts out to the position shown in Figs. 4 and 7. Either of the jaws or the die can also be taken out independently. The tail-piece can be movedv without reference to other mechanism; and so of others. This obviously is of advantage in practical operation, as much time would otherwise be required for readjustments.

The operation of my said invention may be briefly recapitulated as follows: The machine is first provided with a swage, anvil, and clamping jaws, adapted to the size of saw and the work desired to be done. It is then in the position shown by the full lines in Fig. 1, placed upon the saw. The lever C is then swung from the position shown in full lines to the position shown in dotted lines, which clamps the machine firmly in place upon the saw. The lever E is then swung from the position shown in full lines to the position shown in dotted lines, which operates both the swage and anvil, and swages and dresses the saw tooth to which the machine has been applied, complete, at a single operation. The parts are then reversed, and the machine advanced to the next tooth, when the operation is repeated, and so on, until the saw is completely swaged.

Having thus fully described mysaid invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, in a saw swaging and dressing machine, of the tail-piece A adj ustably secured to the frame, and the yoke A provided with a bearing point suitable to rest upon the backs of the teeth of the saw being operated upon below and out ofcontact with the sharp points thereof, said yoke being longitudinally adjustable uponsaid tail-piece whereby said point may be adjusted to rest upon the backs of teeth of different sizes, substantially as and for the purposes set forth.

2. The combination, in a saw swaging and dressing machine, of a tail-piece A secured to the frame, and a yoke A secured and longitudinally adj ustable upon said tail-piece and provided with a pin (1. adapted to rest upon the backs of the teeth of-the saw being operated upon, just below the sharp points thereof, substantially as shown and described and for the purposes set forth.

3. The combination, in a saw swaging machine, of the frame A, the bracket A thereon, the swage or die, the lever E secured to said swage and mounted in said bracket, whereby the swage can be removed without disturbing the lever, substantially as set forth.

4. The combination, in a saw swaging and dressing machine, of jaws B and B each bein g formed interchangeable and beveled upon all of its four forward or operating corners, and said corners being formed in pairs, whereby a single pair of jaws is rendered equivalent to four separate pairs of jaws, with mechanism for forcing said jaws toward each other, swaging dies, and mechanism for operating said swaging dies, substantially as shown and described.

5. The combination, in a saw swaging and dressing machine, with the operating mechanism, of two clamping jaws B and B, certain corners of which are formed to fit against and dress the sides of saw teeth at the same time they are being swaged, and certain corners of which are cut away, so that by bringing said corners into use the teeth may be swaged only, substantially as shown and described.

6. The combination in a saw swaging and dressing machine, of two jaws B and B, said jaw B being fixedly but adjustably secured to one side of theframe work by means of a machine-screw b passing through a slot in said frame-work into said jaw, and thejaw B being pivoted at the rear end on a stud b and a screw whereby the same may be driven toward or from said jaw B, substantially as shown and described.

7. In a machine for swaging and dressing saws, a pair of clamping jaws, one of which, B, is loosely mounted on a stud or pin L a bearing-block B carrying said stud or pin, and a second bearing-block B carrying the bearing-block B said bearing-block B being mounted upon the frame-work, said several IIC parts being adjustable one upon another, substantially as set forth.

8. The combination, in a saw swaging machine, of the swage, and the clamping jaws, one of said jaws being movable and supported upon a block at its rear end,these parts being formed with a taper between them where they come togetherpwhereby the jaw is permitted to also drop away from the swage somewhat, as it swings'away from its fellow, substantially as set forth.

9. The combination, in a saw swaging machine, of the swage or die, and the clamping jaws B and B, said clamping jaws being formed concave attheir forward ends, and fitted over and partially supported by said swage or die, substantially asset forth.

10. The combination, in asaw swaging machine, of a swage, an anvil, and two jaws the faces whereof are formed to fit the sides of j the finished tooth, whereby all four sides of the point of the tooth-are swaged and dressed complete at one operation.

11. The combination, in a machine for swaging and dressing saw teeth, of a pair of clamping-jaws, one fixedly but adjustably secured to oneside of the frame,and the other pivotally and adj ustably mounted on" the other side of the frame, a screw 0 by which said loosely mounted jaw is adapted to be driven toward the other'jaw, and a lever 0' whereby the same is operated, said several parts being arranged and operating substantially as set forth.

12. In a machine for swaging and dressing saw teeth, the combination, with a rotatory saw swage D having grooves or serrations in its surface, of a lever mounted thereon pro vided with a key-way, and a removable key formed to fit in said key-way and into one or more of said grooves or serrations, whereby the relative position of the swage and the lever may be adjusted, substantially as set forth."

13. The combination,in a saw swaging machine, of the anvil-block, the pitman, the cam operating said pitman, the arm F on said cam,'the leverE, the link E having hook e and the pin f and spring f 3 on said arm F substantially as set forth.

14. The combination, with the swinginganvil block of a swaging machine, of a pitman for operating the same, said pitman being adj ustable, as described, whereby the anvil may be adjusted for use on saws of different thicknesses, substantially as set forth.

15. The combination, in a saw swaging ma chine, of a swage or die, clamping jaws, a movable anvil, and moving mechanism therefor, said anvil being secured to said moving mechanism by a laterally slidable attachment, whereby said anvil is adapted to reach its final position between said jaws with uniform bearing upon both, substantially as set forth, w

16. The combination, in a machine for swagin g or dressing saws, of a swage having a camshaped operating face, and a cam or eccentric anvil, and a lever connected to both,

whereby they are simultaneously operated.

17. The combination, inasaw swaging machine, of a rotatory swageDhaving a cam-opcrating surface, a leverE secured to and opcrating said swage, a pivoted or swinging anvil H, acamwhereby it is driven, an arm 'extending out from said cam, and a link connecting said arm to said lever.

18.' The combination, in a saw swaging machine, ofa cam operating swage, a cam anvil, and mechanism for operating said swage and said anvil, said mechanismbeing so connected as to move them in opposite directions one toward the point of the tooth and the other from the point/of the tooth toward the root thereof in operation. 7

19. The combination, in as'aw swaging machine, of a swage, an anvil, mechanism for operating the same, and a spring whereby the anvil is held against its pivot or oscillating point, substantially as shown and described.

20. The combination, in a saw swaging machine, of the cam-shaped anvil H, the anvilblock working over apivotal point, as the point of the set screw G a pitman connected to said anvil-block, and a cam operating said pitman, substantially as set forth.

21. The combination, in a saw swaging machine, of an anvil, an anvil-block, and an adjustable screw G having a pivot point engaging with said anvil-block, and over which said anvil-block pivots in operation,substantially as set forth.

22. The combination, ina saw-swaging machine, of a cam-shaped anvil, an anvil-block carrying the same, a pivot over which said anvil-block operates, a pitman for operating said anvil-block having a cross-head, and a bifurcated part'G' engaging with said crosshead, substantially as set forth.

23. The combination, in a saw swaging machine, of a cam-shaped anvil, an anvil-block, apitman for operating the same, said pitman being formed of two parts, and adjustable one upon the other, whereby the motion is accurately adjusted and determined, substantially as set forth.

In witness whereof Ihavehereunto set my hand and seal, at Indianapolis, Indiana, this 27th day of April, A. D. 1893.

JOHN F. PRIBNOW.- .[n 8.]

Images