US1721048A

US1721048A - Skiving machine

Info

Publication number: US1721048A
Application number: US510710A
Authority: US
Inventors: Andrew R Ridderstrom
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1919-08-25
Filing date: 1921-10-27
Publication date: 1929-07-16
Anticipated expiration: 1946-07-16

Description

,191s 2 sheets-sheet 1 July 16, 1929. A. R. RIDDERSTROM SKIVING MACHINE Original Filed Aug. 25

July 16, 1929. A. R. RIDDERSTRKOM 1,721,048

SKIVING MACHINE Original Filed Aug. 25, 1919 l //Shets-Sheet 2 Patented July 16, 1929.

UNTED STATES PATENT ()Fl*."IfCEr ANDREW R. RIDDERSTROM, OF N AIIANT, l:MASSACl-Ill'SE'lIS, ASSIGNOR, BY MESNE ASSIGNMENTS, 'IO UNZTED- SHOE MACHNERY CORPORATION, OF PATERSON, NEW JERSEY, A. CORPORATION' OF NEW JERSEY.

SKIVING MACHINE.

Original application filed .August 2,5, 1919, Serial No. 319,565. Divided and this application filed October 27', 1921.

The present invention relates to skiving machines, and more particularly to machines ot the Amazeen type tor shiving,` the margins oit sheet material, like lather shoefuppers or other stock adapted 'loruse in the manufacture olf boots and shoes, but embodies features of more general application the nature oit which will appear in the courseoi" the following;` des :ription and will be particularly pointed out in the el aims.

Diiilerent margins ot the same shoe upper are frequently provided with scar's of ditiferent angle. lit it desired to told the sliivcd margin, the scarl is usually made comparatively shallow, and terminates usually in a icather edge. li", however-` the margin to be lett unfolded, it is preferred to. have the scart very sharp, and termin ating' in a blunt shoulder at the edge ot' the upper. It unprovided with a shoulder ot this character, the untold/ed margin, it on the inside o'l the shoe, ivill curl; and cause annoyance to the Wcarcrs toot. This is particularly true ot shoes the uppers ot which are constituted of a plurality ol: leather pieces seived together, the margins exposed' on vthe outside olf the shoe beine; iolded. and those on the inside, unfolded; the folded margins being provided with Wide` shallow, slanted scariis, and the unfolded marginswvith narrow scarfs ot sharp angle.

Se far as known, all Amazeen :iihivingl machines have heretofore been so constructed as to render it impossible to change materially the relative positions of the sliiving' knife and the 'leed roll during the operation of the machine. To skive scavi-is of different anpgle with machines of this type, therefore, it is necwisary: lirst, to run the leather througgh the machine to produce arscart ot one angle, then stop the-machine 'for the purpose of effecting' someV necessary adjustment; and finally, to run the leather through the machine, as adusted, to produce a` scartl of diilcrent anglo in another portion oi' the margin. rlilhis proccdureii-s, of course, wasteful ot time,4 and the necessary frequent adjustments are. furthermore, very troublesomeo lt has, therefore, been customary to employ a plurality olf machines, each adjusted to cut a scart ot a particular, desired angle. The uppers are all iii t run through onemachir to produce one rtf in one portion the iu'. fu, and then.

Serial No. 510,710.

through another machine to produce another scarf in another portion ofv the margin. Though this practice saves some time and avoids troublesome adJustments, it is objectionable. Various plans have, therefore, been proposed to improve upon this primitive method' of procedure. A machine has been constructed, for example, that is provided Withtwo seiiarate and distinct, differently adjusted, skivinp; instrumentalities conveniently supported upon a single frame, so that the operator may proceed directly from the one instrumentality to the otherfivhile still holding; the upper in his hands. This does'save further time, but the machine is really tiro machines, and not one. Again, it has been suggested to Vuse a plurality ol gages upon the same machine in order that one niargin` of the upper may be guided by one gage and another by another, the gages being` Yso arranged as to enable themachine tosliive scarta of dii'lerent Width. This suggestion does not, however, provide for scarls of different angle, and the suggested machine is,A furthermore, somewhat complex. For one reason or another, the various proposed improvements have not met with commercial favor, so that the more primitive methoo above described of employingA a plurality of separate machines is still the standard in the shoe factory.

In the machine of a copending application, Serial No. 319,565, iiled August 25, 1919', ot which the present application is a division, and to which reference is madeffor a 'fuller description of so much of the illustrative machine as is not fully ydisclosed herein, because unnecessary to an understanding yof the 'features of novelty claimed herein. Provision is made for relatively adjusting, at will, theangular positions of the slii'vin lniiie and the teed roll, during' the operation of the mach ine, to a substantial extent su'icient to meet commerciall needs, so that they operator, after skivinli,r a scaril ot one angle in a portion ot ythe margin of the leatheig'is enabled: quickly to change the angularl relation of the knile and the feed. roll. Scarfsof diderent angle may thus be quickly produced in different portions of the margin of the same shoe upper.

Relative adjustment of the: ski'vingi' lmi'lc and the "toed roll not, ot fiei'v; but

CII

such adjustment has heretofore usually involved the use of tools, and so could not be effected during the operation of the machine. Nor is it new to effect such adjustment manually, without the aid of tools; provision for manual adjustment, however, has heretofore contemplated very small changes, such as are necessary to compensate for wear of the knife by grinding. It has furthermore been proposed to effect slight treadle-controlled movement of the feed roll for the purpose of varying the character of the edge of the scarf, but this proposal was not intended to effect the angle of the scarf.

The chief object of the present invention is to provide an improved machine. of the above-described character that shall afford quick relative angular adjustment between the knife and the feed means of sufiiciently large angular extent to effect the skiving of wide and sharp scarfs in the margin of the shoe upper during the operation of the machine.

lVith the present machine, furthermore, not only is it possible to vary the angular relation of the knife to the feed roll, but relative bodily movement may be eifected, as well, so that if the machine is adjusted to produce a shallow cut, tapering off to a feather edge, in one position of adjustment, a scarf of sharp angle will end in a bluntshouldered edge. To control the feather edge and the shoulder when it is desired to vary the angles of the scarfs, provision is further made for adjusting the relative initial positions of the knife and the feed roll, and of a gage that is adjustably fixed relative to the feed roll.

lVith these ends in view, the invention consists of the improved machine a preferred embodiment of which is hereinafter described, illustrated in the accompanying drawings, and defined in the appended claims.

ln the accompanying drawings, Fig. 1 is a central vertical section of the machine disclosed in the above-mentioned application, parts being omitted and other parts being broken away for clearness; Fig. 2 is a side elevation showing a preferred gauge and guide; Fig. 3 is an enlarged view of parts of the forward portion of the machine shown in Fig. 1; F 4 is a view similar to Fig. 3 showing the knife and the feed roll occupying relatively different angular positions; Figs. 5 and t3 are views illustrating scarfs of different angle that may be skived when the parts occupy the relative positions shown in Fig. 3 and 4, respectively; Fig. 7 is an enlarged vertical sectional detail taken substantially upon the line 7 7 of Fig. 1, looking in the direction of the arrows; and Fig. 8 is an enlarged plan of the detail illustrated bv Fig. 7.

The skiving machine herein illustrated, for

convenience merely, is of the bench type usually employed for handling light skiving, but the invention is not limited thereto. Machines of this character are usually adjustable to skiVe, in the margin of a sheet of material 2, like a leather upper, either a wide slanting scarf 4, Figs. 3 and 5, or a narrow, sharp or steep scarf 6, Figs. 4 and G, depending upon the relative angular positions adjustably occupied by the rotatable disk knife 185 and the feed roll 95. in the present machine, itis possible to effect a change in these relative positions, at will, during the skiving operation. To effect this result, the skiving disk or knife is swung or pivoted angul arly, about a rod 164, by merely rotating with the fingers an adjusting screw 191. rlhe knife is capable of operating at substantially any angle relative to the feed roll within the range of adjustment without changing the co-operative relation of the driving means and the associated driven means. All driving gearing remains in the same meshing rclation irrespective of the relative movement of the same due to changes in the angle of the scarf. The rotation of the screw 191 therefore does not interfere in the slightest with the rotation of either the knife or the feed roll. The parts are so designed that a comparatively slight movement of the adjusting screw 191 will yield a comparatively large angular movement of the knife, the movementof the adjusting screw being multiplied three or four times in the movement of the knife. The knife may therefore be readily moved during the operation of the machine, without interfering with its rotation or the rotation of the feed roll., te a substantial angular extent sutlicient to meet all commercial requirements. As the shaft 164 about which the knife pivots is out of line with the cutting edge of the knife, the knife moves both angi'llarly and bodily in response to the operation of the screw 191, and to a greater or lesser extent, as needed, depending upon the degree of adjustment of the screw. If, therefore, the scarf 4 is provided with a feather edge 8 when the knife occupies one position of angular adjustment, as shown in Fig. 3, the scarf 6 will be provided with a blunt shoulder 10 in the edge of the material when the knife occupies another position of angular adjustment, illustratcd in Fig. 4. This is assuming, of course, that the leather 2 has not moved to the right, as viewed in the iigures, during the adjustment of the knife from the position shown in Fig. 3 to the position shown in Fig. 4. To prevent such movement of the leather 2 during its feeding movement, the edge of the leather is guided against a lip, gauge or guiding projection 132 that is adjustably fixed relative to the feed roll 95. The illustrated yielding guide clamp or 21 2'* presser foot and gage 132 is illustrated and described in a copending application Serial No. 668,346, filed Octoberl 13, 1923, and need not, therefore, be fully described herein. By adjusting the gage 132, the position of the leather 2 and the width of the scarf correspending to any desired angular'position of the skiving;` knife may obviously be adjusted. Provision is inadealso for adjustingthe feed roll 95 longitudinally of its'axis toradjust the initial relative positions of the feed roll and the knife. rlhe nature, the extent and the angle of the scarf may thus be varied.

The inain fran'ie, represented by the nuineral 20, is provided with a base portion 21 that nia y be bolted to a bench or the like, and with an overhanging arin or head 22 that projects over the base, as will be understood froin an inspection of Fig. 1. The overhangingarin 22 carries the sliivinglknife 185 and the feed disk 143. The base portion 21 houses the feed-roll mechanism and the drive elements therefor, the feed roll 95 itself projee-ting forward beyond the base portion.

A main bearing' 25 extends longitudinally of the head 22 at the 'Lipper portion', and to .the rear '(as' shown in Fig. 1), of the niain fralne 20. A projection or lug 26, that is provided with another niain bearing@l 27, is fastened to the front end of the head 22 by screws 23. A bearing sleeve 30 extends forward: through the first-named bearing` 25, and the project-ine; end of the sleeve 30 supports a bracket 68. A. shaft 32 is journaled in the sleeve 30 andthe bearing` 27. rlhe shaft is adapted to be set into rotation by a clutch (not shown) that is controlled by a bell-crank lever 19. The bell-crank levery i9 inay be actuated by an actuatingrod 54 that is pivotally connected at 53 tothe end 52 of the lever` 119 and; that extends downward through the frame 20 to a foot-operated treadle, lever or the like not shown).

Secured to the inain driving shaft 32, at the end of the sleeve 30, is a worin 62. The latter may be of any suitable construction or design, but is herein shown integral with a sleeve 63 and a collar or hub 641-, whereby it inay be securedto the shaft 32 by a pin ora set screw 65 tapped through the collar and tightly engaginp;v the said shaft. Surrounding' said worin is the housing 67 provided with the clamping,` bracket 68 having' ears 69 that are split at 70. if clamping` screw 71 passes through one ear and tapped into the other ear. The said bracket 63 is ad'apted'to be clamped to the end of the sleeve 30 that projects beyond the bearing 25 by the screw 71, as illustrated in Figs. 7l and 8. The bracket 63 is provided with a top bearing 72, a lower bearing 73 and a depending: strut or brace 74 connecting and alinin said bearings. A lug 75 adjacent to the lower bearing 73 is adapted to be bolted to the fra-nie 20 by ineans of the bolts 76.

l-otatablevin the bearings. 72 andffis a `able therein.

shaft 78 transversely disposed relatively to the niain driving shaft 32. Secured to the upper end of the shaft 7 8 by a key or set screw isa worin gear 7 Slt-hat in esheswith the worin 62 and is rotated thereby. or set screw to the lower end of thel shaft 7S, beneath the bearing;i 73, is a spiral gear S0 that meshes with a transversely disposed spiral gear 81. r1`he gear 81 is secured by a set screw S2 orthe like to a feed-roll shaft 63 that is journaled in an oscillative bearing' 61 and in bearings and 85a, through a subfraine or carrier S6. The bearing; Seltapers or is rounded slightly from the middle 37 thereof towards each end. or in an axial di rection.. so that the sanie can be rocked within the bore 83 through the inward projectinghub 89. Axial and rotatable movements of the lfiearinfj; are prevented by means not shown, but illustrated and described in the above-named application, but upward and downward, or rocking', inoveinents of the bearing are permitted. Therefore the shaft inay be rocked upward or downward for adjustment or other purposes and carry with it the bea-ring Sell. The subsfraine 86'is wholly supported upon the shaft S3 and extends freni the hub vof the spiral gear 81 to the hub of the feed roll 05. The bearing 35 is adjacent to the said feed roll while the bearing 85a is adjacent to the hub of the said spiral gear 61, so that there is no axial inoveinent of the said sub-frame 86 and saidbearings relative to the shaft S3 but, as will be described hereinafter, there is axial movement of the subfraine and the shaft relative to the oscillative barring` Sil while the Asaidshaft is also rotat- The sub-frame 36 is provided with guiding faces 97 to render it vertically slidable between the flanges 98 on each side ofv the opening; 99 in the frarne through which the sub-frame 36 extends. Thus.y the sub-frame has an upward and dm 1nward inoveinent and therefore can adjust the position of the shaft S3 and also, under certain operating conditions, may rock the saine. The upward movement of the subfraine S6fis determined or limited by the adjustiney screw 101 tapped through the op of the base portion 21 and bearing' against the top face of the sub-frame. The lower face of the skirt 102 is provided with a notch 103 engaged by the trunnions 104 on a stud 105 at the top of a rod 106. The rod 106 is sur rounded by the spring' 107 and is `gri-.ided at its lower end in a bore through the lug- 108 that is inoinited on 'the base 21 and projects into the interior of the sanie. llherefore siidiicient pressure against the feed roll 05 compresses the spring 107, and the sub-freine 86', the shaft 33 and the bearing; 8/1 niay be said to be rocked about the. largest di aineter of the bearing 311 toand from the adjusting screw The axial adjustment and movement of Secured by a key ii e the shaft 83 and the feed roll 95. whereby the length of the Ascarf may be varied, will now be described. Improved arrangements in the driving and the driven mechanisms of the feed roll adapt them always to co-operate irrespective of the adjustment. Depending from the bearing 85 is a lug 110 having a transverse bore 111 through which is rotatable a cylindrical nut threaded at 112 transverse to its axis to receive the threaded shaft 113. The said lug is counterbored in axial alinement with said shaft and said counterbore is large enough to allow swiveling of said nut 112 and said shaft 113. The shaft 113 extends rearwardly and projects through the bore 114 through the frame 20, where it is provided with a knurled Vhand wheel or head 115. A spring 116 is compressed between Isaid frame 20 and the lug 110, normally to maintain t-he sub-frame 86 in a forward position and yieldable rearwardly. Said shaft 113 is adjusted to provide for the adjustment of the said sub-frame 86 to move the feed wheel and shaft 83 axially. During this axial adjustment, the teeth of the spiral gear 81 will slip slightly through the teeth of the spiral gear 80 without unmeshing. It will be observed that all the associated or cooperating parts described will permit of the above-described universal adjustments and yielding both downwardly and upwardly, the screw 101 providing for vertical adjust-ments of the feed roll and the screw or the threaded shaft 113 for the axial adjustments.

To the extreme left hand end of the driving shaft, see Fig. 1, and suitably secured thereto, is a worm meshing with the worm gear 136 keyed or bolted to the upper end of the feed disk shaft 137 journaled at 138 and 139 in the adjustable bearing 140. The lower end of the shaft 137 has secured thereto, by means of a pin, a key or the like (not shown), a flanged collar 142. A feed disk 1113 is secured to the collar by means of a screw 144 and relative rotation is prevented between the two by means of a dowel (not shown). r1`he feed disk is adjustable transversely to itself, but is yieldable in an axial direction only. rEhe said bearing is grooved (not shown) to engage with a tongue or slide (not shown) on the rib 1&9 interiorly of the head 22 and a clamp screw 119L tapped into the same passes through the horizontally elongated slot through the lug 151 on said. bearing. The transverse adjustment nia y be effective, when desired, by unscrewing the screw 149, adjustin the bearing 1110 bodily, and again tightening the screw 149% r1`he feed disk 1113 is yieldingly forced downwardly, as is illustrated and described in the above-'named application, so that its working edge will co-operate .iith the shoulder on the feed roll 95 and at the same time yield axially when leather is fed between. the said disk and said roll.

The feed disk 143 normally presents an angular working relation with respect to the feed roll 95, and the driving gearing just described is such that both axial aand transverse movement may be had between said gears without disengagement thereof either for adjustments or when performing work, the teeth of the gear 136 merely slipping through the teeth of the worm 135.

Coming now to the knife mounting, to the right of the bearing 27, in Fig. 1, the driving shaft 32 is provided witha spiral gear 162 meshing with the elongated spiral pinion 163 that is freely rotatable upon the cylindrical rod 164:. The latter is j ournaled in bearings at opposite sides of a bracket 170, one of which bearings is shown at 171. The knife bracket is also adjustable transversely of the feed roll, towards and from the operator, by means including a plunger 176, but this is not further described herein, because the specific transverse adjusting means is not an essential part of the present invention. A further description thereof may be found in the above-described application, Serial No. 319,565. Integral with the said bracket and depending therefrom is a bearing having rotatable therein the skiving knife shaft 181 .provided at its upper end with a spiral pinion 182 and provided at its lower end with the flanged collar 183 likewise keyed or fastened to the said shaft at 184. The circular sharp-edged skiving knife 185 is clamped to the flange of said collar by means of a clamp screw or the like (not shown) and a dowel pin (not shown) may be also employed to hold these parts together. Projecting from the said bracket is a transversely extending finger or lug 188 normally resting upon the spring 189 in the socket 190 at the bottom of the interior of the head 22. The adjusting screw 191 is tapped through the lug 26 and engages the top face of said lug 188 for the purpose of rotatably adjusting the bracket 170 and the bearing 180 about the rod 164, the said spring acting always to maintain the said lug 188 against the said adjusting screw and to rotate the bracket and its bearing upwardly. By means of this construction, the pinions 163 and 182 are always in mesh irrespective of any angularly adjusted relation of the bracket and the skiving knife 185. Therefore the said knife may be adjusted to any angular position with relation to the work face 127 on the said feed roll during the operation of the machine without disturbing the relation of the pinions 163 and 182.

A grinder disk 194; is shown fixed or secured to the flanged collar 195 of a grinder shaft.

It is thus possible, by suitable initial adjustment of the feed roll and the feed disk, and angular adjustment, when desired, of the knife, to skive margins of any relatively large variation of length and angle of scarf: 4ill/"herr CII the knife is swung to the left, as shown in Fig. il, the center of the cutting range of the knife Will be farther removed from the gage; and if this center is too far from the gage,the knife will skive very unevenly. This center should lie approximately along the line of the margin on which it is intended to 'fold the material.. rlhe range of swinging movement of the knife necessary to accommodate scarfs of all Widths and angles required iii practice is, however, very small; so small, as toinake no appreciable observed effect upon the operation of the machine. The gage need notkbe closer to the said center, for example, than l,- to l/, inch; and for a scarf from ig `o {1,- inch vfidth, the center of the scarf is nearer the gage than 1/8 inch. The gage is, in practice, therefore, set to the position iii. which the knife will (zo-operate most satisfactorily With it when skiving a featheredged scarf, shown in Figs. 3 and 5. Other types of scar-fs, like the blunt-edged scarf shown in lfigs. ltand 6, may then readily be produced by swinging the knife to the desired angle through manipulation of the screw 191. ln the production of blunt-edged scarfs, it is of no material consequence whether the center of cutting range of the knife lies centrally of the scarf or oli' to one side thereof.

The objects andadvantages of the invention having been inade clear, and one specific einbodiiinent thereof having been described, it will be understood that the invention not restricted to the illustrated embodiment, reference being had to the scope and nature of the appended claims rather than to the said description and the illustrated form thereof.

lVhat is claimed as new is:

l. A skivino machine having, in combination, a rotatable knife for skiving the margin of sheet material, means for rotating the kni fe, a, feed roll and a feed disk for `feeding material to the knife, means operable during` the operation of the machine for quickly relatively moving angularly the knife and the feed roll, without interfering with the operation of the knife and the feed roll, to effect the skiving of scarfs of different angle in the ma `n of the material, means for initially relatively adjusting the knife and the feed roll bodily, and means for initially adjusting the .feed disk.

2. A skiving machine having, in combination, a driving shaft having a spiral gear, a shaft having a feed roll driven fiom the driving shaft, a shaft having a knife and a spiral gear driven by the spiral gear on the driving shaft, the knife and the feed roll being relativ ery "freely adjustable during the operation of the machine, and means operable during the operation of the machine for relativsly adjusting the feed roll and the knife angel arly Without interfering with the operation of the knife and the feed roll.

3, il skiving machine having, in combination, a driving shaft having a spiral gear, a

vfeed roll driven from the said shaft, a shaft about kthe axis of the intermediate gear.

d. A machine of the character described having, in combination, a driving shaftrhaving a spiral gear, a shaft having operating means anda spiral gear driven by the drivingshaft geaigmeans for feeding material to the operating means, the operating means and the feed kmeans being relatively freely movable during the operation of the machine, and means operable during the opeiation of the machine foi' relatively moving the operating means and the feed means angularly Without interfering with the operation of the gears. i y

5. A machine of the character described having, in combination, a driving shafthaving a spiral gear, a shaft having a knife and a spiral gear driven by the driving-shaft gear, and means for angularly adjusting the 'knife Without interfering with the operatioiiof the gears. l

6. A ymachine of thecharacter described having, in combination, a shafthaving a knife and a spiral gear, a spiral gear rotatable about an axis and meshing with the knife gear, and means for angularly adjusting the knife about the axis withoutaffecting the meshing engagement of the gears.

i. A. machine of the character described having, in combination, a frame, a bracket adjustably mounted in the frame having a bearing, a shaft mounted in the bearing having a knife and a gear, a rod mounted in the frame and the bracket having a gear meshing with the first-named gear, means for rotatably adjusting the bracket and the bearing about the rod'without effecting disengagement of the gears, and means for feeding niaterial to the knife.

8. A machine of the character described having, in combination, a frame, a bracket adjustably mounted in the frame having a bearing and a lug, a shaft mounted in the frame and the bracket having a gear, a rod mounted in the bearing having a gear meshing with the first-named gear, a spring seated in the frame acting upon the lng, and an adjusting screw tapped in the frame engaging thelug to adjust the bracket and the bearing about the first-named shaft Without effecting disengagement of the gears.

E). In a machine of the character described, a dri Vring shaft having a plurality of spiral gears thereon, a feed roll and a feed disk each having a spiral gear driven by a spiral gear on the driving4 shaft, a shaft having a knife and a spiral gear driven by a spiralgear on the driving shaft, means for adjusting said llO feed roll and said feed disk relatively, and means for adjusting said knife relatively t-o the feed roll and the feed disk without disengaging the driving-shaft gear and the knifeshaft gear.

l0. A machine of the character described having, in combination, a knife, means for feeding material to the knife, means whereby the feed means may be adjusted in two directions at right angles to each other, the knife and the feed means being relatively freely movable angularly during the operation of the machine, and means operable during the operation of the machine whereby the knife and the feed means may be quickly relatively adjusted angularly to a substantial extent without interfering with the operation of the knife or the feed means, to effect the skiving of scarfs of different angle.

l1. A machine of the character described having, in combination, a rotary disk knife, a feed roll and a feed disk for feeding material to the knife, means whereby the knife may be angularly adjusted, means whereby the feed roll may be axially adjusted to maintain its coopeiative relation to the knife, and means whereby the feed disk may be adjusted to maintain its cooperative relation to the feed roll.

l2. A machine of the class described having, in combination, a rotary disk knife, a feed roll, means whereby the roll may be adjusted substantially vertically toward and from the knife, means whereby the roll may be adjusted substantially horizontally toward and from the knife, the'knife and the feed means being relatively freely movable angularly during the operation of the machine, and means for quickly effecting relative angular adjustment of the knife and the roll to a substantial extent without interfering with the operation of the knife or the feed means, to effect the skiving of scarfs of different angle.

13. A skiving machine having, in combination, a rotary knife for swiving the margin of sheet material, means for rotating the knife, a shaft one end of which is provided with a feed roll for feeding the material to the knife, means for rotating the feed roll, and means operable during the operation of the machine for tilt-ing the feed roll about a point at the other end of the shaft without interfering` with rotation of the feed roll, to permit skiving scarfs of different angle, whereby at least one of the scarfs will be provided with a blunt shoulder at the edge of the material.

lll. A skiving machine having, in combination, a skiving knife, a driving gear, a feed roll and a feed disk for feeding material to the knife, a shaft upon which one of the feed members is mounted having a driven gear meshing vith the driving gear so as to be driven by the d iving gear, one of the gears being freely pivotally actuable to a substantial extent While the gears are maintained in meshing relation during the opeiation of the machine, and means operable during the operation of the machine for quickly pivotally actuating the said one gear to a substantial. extent while maintaining the gears in meshing rel ation.

l5. A skiving machine having, in combination, a. rotatable disk knife for skiving the margin of sheet material, means for rotating the knife, means comprising a feed roll and a feed disk for feeding the material to the knife, means for rotating the feed roll and the feed disk, the knife and the feed means being relatively freely movable angularly to a substantial extent at all times during the operation of the machine, means operable during the operation of the machine for quickly relatively moving the knife and the feed means angularly, without interfering with the rotation of the knife or the feed roll or the feed disk, to a sufficiently large angular extent to provide for effecting the skiving of wide slanting and narrow steep scarfs of different angle in the margin of the material, and means for initially relatively adjusting the knife and the feed means bodily in a direction at right angles to the direction of feed.

1G. A skiving machine having, in combination, a rotatable disk skiving knife for skiving the margin of sheet material, means for rotating the knife, means comprising a feed roll and a feed disk for feeding material to the knife, a carrier upon which one of the feed members is mounted, means for rotating the feed roll and the feed disk, means operable during the operation of the machine for moving the carrier during the operation of the machine to adjust the said feed member during the operation of the machine, the knife and the carrier being at all times during the operation of the machine relatively freely adjustable to a'substantial extent angularly to the direction of the said movement of the carrier, and means operable during the operation of the machine for quickly relatively adjusting the knife and the carrier angular-ly to the direction of the said movement of the carrier, without interfering with the rotation of the knife or the feed roll or the feed disk, to a sufficiently large angular extent to provide for effecting the skiving of wide slanting and narrow steep scarfs of different angle in the margin of the material.

17. A skiving machine having, in combination, a skiving knife, a driving gear, a feed roll and a feed disk for feeding material to the knife, a shaft upon which one vof the feed members is mounted` the shaft having a gear meshing with the driving gear so as to be driven by the driving gear, and means operable during the operation of the machine for relatively pivoting the gears while maintaining their meshing relation.

18. A skiving machine having, in combination, a skiviiig knife, a feed roll Vand a feed disk for feeding material to the knife and each having a shaft provided with a driven gear, driving gears, the driven gears being constaiitly driven by said driving gears and adapted `to move relatively thereto, means whereby the feed roll and the fee-d disk may each be adj usted bodily relatively to the other and relatively to the driving gears, and means for securing the feed roll and the feed'disk in adjusted positions.

19. A ski ving machine, having, in combiiiation, a skiviiig knife, a feed roll and a feed disk for feeding material to the knife and each having a shaft provided with a driven means, driving means, the driven means cooperating with said driving means and adaptcd to move relatively thereto while maintaining co-operative relation therewith, means whereby the feed roll and. the feed disk may eaehbe adjusted bodily relatively to the other, and .means for securing the feed roll and the feed disk iii adjusted positions.

20. In a machine of the character described, spiral driving gears, a feed roll and a feed disk .in co-operative relation, each provided with a shaft and a driven spiral gear constantly driven by the said spiral driving' gears, an d means wherebysaid feed roll and said feed disk may be adjusted relatively to each other through the movement of each of said driven spiral gears alongits working line of contact with the corresponding driving spiral gear while the corresponding gears maintain their normal co-operative relations.

2l. fn a machine of the character described, a main shaft provided with two driving gears, a shaft'having'a feed roll and a gear, an intermediate shaft interposed between the hereinbefore-mentioned shafts and hav `to its meshing gear.

22. In a machine of the character described, a knife, a main shaft provided with two spiral drivin gears, a shaft having` a feed roll and a spiral gear, an intermediate shaft interposed between the hereiiibefore-mentioned shafts and having two spiral gears, one of which meshes with one of the said driving gears andthe other of which meshes with said fcedaoll gear, means adapted to adjust said feed-roll shaft, said feed roll and said spiral gear axially, a shaft having a feed disk and a spiral gear meshing with the other spiral driving gear, and means whereby the feeddisk shaft may be adjusted while its spiral gear is maintained in cooj'ierative relation to its meshing gear, the feed roll and the feed disk being adapted to feed material to the knife.

23. A machine of the character described having, in combination, a knife, two driving gears, a feed roll and a feed disk for feeding material to the knife each having a. driven gear meshing with one of the driving gears and adapted to move relatively to its meshing driving gear, and means whereby the feed roll and the feed disk may be adjusted relatively to each other through the movement of each driven gear relatively to its meshing driving geai'. 2li. il machine ofthe character described having, in combination, a knife. two spiral driving gears, a feed roll and a feed disk for feeding material to the knife, each having a spiral gear meshing with one ofthe driving gears so as to be driven thereby, means whereby the feed roll and the feed disk `may each be adjusted bodily while maintaining its driven gear in mesh with its corresponding dri ving gear, and means for securing the feed roll and the .feed disk each in its adjusted position.

feeding material to the knife and a spiral gear, an intermediate shaft interposed hetween the hereinbefore-iiientioned sha and having two spiral ge.:l fs, one of which meshes with the said driving gear and the other of vwhich meshes with said feed-roll gea r, a subrfraine interposed rbetween said feed roll and its spiral. gear, a nut swivelled in said frame, and an adjusting screw co-operatiii g with. said nut to move the feed-roll shaft and the ele ments carried thereby axially.

2G. In a in aehine of the character described, a main shaft provided with a spiral driving gear, a shaft having a feedfroll and a spiral gear, an intermediate shaft interposed between the hei'einbefore-ment-ioned shafts and having two. spiral gears, one of which meshes with the said driving gear and the other of which, meshes with said feed-roll gear, a suhfraine interposed between the feed roll and its spiral gear, a nut swivelled in said sub-frame, a screw threaded into said nut for movin the said feed-roll shaft and the elements carried thereby in an axi al direction, and a spring cooperating with said frame to allow yielding axial movement in one direction and force said feed-roll shaft. and the elements carried thereby in the opposite direction.

27. n a machine of the character described, a knife, a driving shaft having a spiral driving gear, a sub-frame, a shaft hearing in the sub-frame having a feed roll for feeding niaterial to the knife and a spiral gear driven by gea r, means swivelled the iirst-iiientioned llt) upon the sub-frame for adjusting the feed roll axially, and means for adjusting said feed roll transversely to its axis.

28. In a machine of the character described, a spiral driving` gear, a shaft having a feed roll and a spiral gear driven by the firstment-ioned gear, means swivelled with respect to the feed-roll shaft for adjusting the same axially, and means permitting the feed roll to pivot while maintaining the spiral gears in mesh.

29. In a machine of the character described, a knife, a driving shaft having a spiral driving gear, a shaft having a feed roll for feeding material to the knife and a spiral gear driven by the first-mentioned gear, means swivelled with respect to the feed-roll shaft for adjusting the same axially, yielding means permitting movement of the feed roll transversely to its axis, and means co-operating with said yielding means for adjusting the feed roll transversely to its axis.

30. A skiviug machine having, in combination, a skiving knife, a driving gear rotatable about an axis, a feed roll and a feed disk for feeding material to the knife, a shaft having a driven gear rotatable about an axis and meshing with the driving gear so as to be driven by the driving gear, one of the feed members being mounted on the shaft, and means operable during the operation of the machine for relatively moving the gears in such fashion as to change the angle between their axes while maintaining the gears in mesh to adjust the work-feeding mechanism.

3l. A skiving machine having, in combination, a skiving knife, a driving gear, a shaft one end of which is provided With a gear meshing with the driving gear so as to be driven by the driving gear, a feed roll and a feed disk for feeding material to the knife, one of the feed members being mounted at the other end of the shaft, and means operable during the operation of 'the machine for relatively pivoting the shaft about its first-named end while maintaining the meshing relation of the gears to adjust the said feed member towards andfrom the knife.

32. In a machine of the character described, a driving shaft provided with a spiral gear, a sub-frame, a shaft bearing in said subframe having a feed roll, and a spiral gear on said feed-roll shaft driven by the drivingshaft spiral gear, adjusting and yielding means for moving the sub-frame in directions parallel to the axis of the shaft bearing therein, and adjusting and yielding means for moving said sub-frame transversely to the axis of the shaft bearing therein.

In a machine of the character described, a driving shaft provided with a spiral gear, a sub-frame, a shaft having a feed roll rotatable in bearings in said sub-frame and supported by and rotatable in a swivelled bearing, a spiral gear on said feed-roll shaft driven by the driving-shaft gear, adjusting and yielding means for moving the subframe in directions parallel to the axis of the shaft bearing therein, and adjusting and yielding means for moving said sub-frame transversely to the axis of said shaft bearing therein.

34. In a machine of the eh aracter described, a driving shaft provided with spiral driving gears, a shaft having a work-feed disk and a spiral gear meshing with one of the spiral driving gears, a movable sub-frame, a shaft rotatable in the movable sub-frame having a feed roll and a spiral gear driven by another of said spiral driving gears, said feed disk and said feed roll being disposed transversely one to the other, and yielding means eo-operating with one of said work-feed members permitting yielding movement in two directions at right angles to each other transversely of the other said feed member.

255. A skiving machine having, in combination, a skiving knife, a driving gear, a shaft having a gear meshing with the driving gear so as to be driven by the driving gear, a feed roll and a feed disk for feeding material to the knife, one of the feed members being mounted on the shaft, and means operable during the operation of the machine for pivotally adjusting the said one feed member and for adjusting the shaft back and forth in the direction of extension of the shaft.

3G. A skiving machine having, in combination, a skiving knife, a driving gear, a feed roll and a feed disk for feeding material to the knife, a shaft upon which one of the feed members is mounted having a driven gear meshing with the driving gear so as to be driven by the driving gear, and means operable during the operation of the machine for pivotally actuating one of the gears while maintaining the gears in meshing relation.

37. A skiving machine having, in combination, a skiving knife, a driving gear, a feed roll and a feed disk for feeding material to the knife, a shaft upon which one of the the feed members is mountedhaving a gear meshing with the driving gear so as to be driven by the driving gear, and means operable during the operation of the machine for pivotally moving the shaft during the operation of the machine while maintaining the gears in meshing relation.

38. In a machine ofthe character described, a frame provided with a base portion and an overhanging tubular arm, a feed roll projecting beyond the base portion towards the overhanging arm, means for driving the feed roll housed within the base portion, a feed disk cooperating with the feed roll, a knife carried by the overhanging arm, and means for drivllO ' of the first-named ing the feed disk and the knife housed by the overhanging arm.

39. In a machine of the character described, a frame having a lug provided with a bore, a shaft pivota-lly mounted upon the frame so as to rock about one end of the shaft, a subframe mounted upon the shaft p-rovided with a notch near the other end of the shaft, a rod one end of which is guided in the bore having a stud at the other end provided with trunnions, the notch being engaged by the trunnions, a spring surrounding the rod, and an adjusting screw tapped in the frame 'bearing against the sub-frame to limit the rocking movement of t-he shaft in one direction, the notch and the screw being positioned at points 0f the sub-frame on opposite sides of the shaft, and the spring yieldingly opposing the rocking movement of the shaft in the opposite direction.

tO. In a machine of the character described, a frame having a bore, a shaft mounted on the frame, a sub-frame mounted upon the shaft, a shaft adjustably connected to the sub-frame extending through the bore, a spring acting upon the sub-frame tending to effect axial movement of the first-named shaft in one direction and permitting yielding axial movement of the first-named shaft in the opposite direction, and means upon lthe free end of the second-named shaft limiting axial movement shaft in the first-named direction.

41. A skiving machine having, in combination, a skiving knife, driving means, a shaft having driven means cooperating with the driving means so as to be driven thereby, a feed roll and a. feed disk for feeding-material to the knife, one of the feed members being mounted on the shaft, and means whereby the feeding means may be adjusted both back and forth axially of the shaft and at right angies to the axis of the shaft without disturbing the cooperativer relation of the driving means andthe driven means.

42. A skiving machine having, in combination, a skiving knife, an axially adjustable shaft pivotally adjustable about a point lying in the axis of the shaft, a feed roll and a fee'd disk for feeding material to the knife, the feed roll being mounted on the shaft.

d3. A machine of the character described having, in combination, a knife, a shaft provided with a driving gear, a shaft having a feed roll for feeding material to the knife and a gea-r meshing with the driving gear, a sub-frame interposed between the feed roll and the second-named gear, means whereby the second-named shaft and the elements carried thereby may be axially adjusted while the gears are maintained in cooperative relation, and means for rocking the second-named shaft so as to move the feed roll towards and from the knife.

e, machine of .the character described swivelled with respect to the shaft for -adjusting the feed roll axially of the shaft.

; In a machineof the character described,

afranie provided with a bearing, a bearing sleeve mounted in the bearingand projecting therebeyond, a shaft jiou-rnaled in the v'bearing sleeve, a sleeve having a gear integral therewith -mounted upon ythe shaft, a housing` adjustably clamped to the projecting end of the bearing sleeve, and a shaft journaled in `the housing having` a gear meshing with the inst-named gear, the housin being adapted for adjustment without effecting disengagement ofthe gears.

4-6. In a machine of the character described, a knife, a driving shaft having a gear, a shaft having a feed disk and a gear meshing with the driving-shaft gear, a feed roll cooperative with the feed disk for feeding material to the knife, and means for transversely adjusting the shafts relatively to each other substantially parallel to one of the shafts while maintaining the gears in cooperative relation.

47. A ski-ving machine having, in combination, a skiving knife, a feed vroll anda feed disk for feeding material to the knife, means for adjusting the feed roll bodily towards and from the knife, and lmeans for yieldingly maintaining the feed ro'll in yadjusted position.

48. In a machine of the character described, a frame provided with a bearing, a bearing sleeve mounted in the bearing `and projecting therebeyond, al shaft j ournaled in the bearing sleeve, a Vhousing carried by the projecting end of the bearing sleeve, and a shaftvjournaled in the housing geared to the first-named shaft. f

49. A machine of the character described having, in combination, a knife, a feed roll and a feed disk for vfeeding material to the knife, Ameans for derivi-ng the knife, the feed roll and the feed disk, means whereby the feed disk `may be adjusted axially and transversely without disturbing the driving connections between the driving ymeans and the feed disk, and means for securing the feed disk in axially and transversely adjusted position.

50. A machine of the character described having, i-n combination, a knife, a feed roll and a feed disk for feeding lmaterial to the knife, means whereby the feed kdisk may be adj usted axially and transversely, and means for adj usting the feed roll in two directions to maintain the feed roll and the Afeed disk in cooperative relation irrespective of the adjusted position of the feed disk.

5l. A machine ofthe character .described having, in combination, a knife, a driving sl a a shaft ha two gears one of which meshes with the first-named gear, a' shaft having a gear meshing with the other of the said two gears, means for relatively adjusting` the three shafts without disturbing the meshing of the said gears, a feed roll mounted upon the third-named shaft, and a feed disk cooperating with the feed roll for feeding materia-l to the knife.

52. A machine of the character described having, in con'ibination, a frame provided with a bearing, a shaft ournaled in the bearing, a spiral gear mounted upon the shaft, a housing secured to the frame at an angle' to the shaft, a shaft journaled in the housing at an angle to the first-named shaft having two spiral gears one of which meshes with -the first-named gear, and a shaft disposed at an angle to the second-named shaft having a spiral gear meshing with the other of the said two spiral gears.

53. A skiving machine having, in combination, a rotary disk skiving knife, a feed roll and a feed disk for feeding material to 'the knife, means whereby the roll may be adjusted toward and from the plane of the cut of the knife, means for effecting relative angular adjustment of the knife and the roll, and means for yieldingly maintaining the knife and the roll in relative angular adjustment.

54. A skiving machine having, in combination, a skiving knife, a driving shaft having a gear, a feed roll and a feed disk for feeding material to the knife, a shaft upon which the feed disk is mounted having a gear meshing with the driving-shaft gear so as to be driven by the driving-shaft gear, a shaft upon which the feed roll is mounted, means for adjusting the feed-roll shaft back and forth in the direction of extension of the feedroll shaft, and means for adjusting the feeddisk shaft back and forth in the direction of extension of the feed-roll shaft while maintaining the gears in meshing relation, one of the said two adjusting means being operable during the operation of the machine to effect the corresponding adjustment during the operation of the machine.

55. A skiving machine having, in combination, a skiving knife, a carrier having a bearing, a shaft mounted to rotate in the bearing, al feed roll and a feed disk for feeding material to the knife, one of the feed members being mounted on the shaft, means operable during the operation of the machine for moving the carrier during the operation of the machine to adjust the said feed member during the operation of the machine, the carrier being freely movable during the operation of the machine, and means for adjusting the said feed member back and forth in the direction of extension of the shaft.

56. A skiving machine having, in combination, a skiving knife, a feed roll and a feed disk for feeding material to thev knife, a shaft upon which the feed roll is mounted, means for adiusting the shaft axially back and forth, and means for pivotally actuating the shaft about a point disposed in the axis yof the shaft.

57, A skiving machine having, in combination, a skiving knife, driving means, a shaft having driven means, n'ieans connecting the driving means with the driven means to cause the driven means to be driven by the driving means, a feed roll and a feed disk for feeding material to the knife, one of the feed members being mounted upon the shaft, means yieldingly maintaining the shaft in a normal position, and means operable during the operation of the machine for pivotally actuating the shaft in opposition to the yielding-maintaining means about a point disposed in the direction of extension of the shaft while maintaining the cooperation of the driving means and the driven means to adjust the feed means.

S. A skiving machine having, in con'ibination, a skiving knife, a driving gear, a shaft having a gear meshing with the driving gear so as to be driven by the driving gear, a feed roll and a feed disk for feeding material to the knife, one of the feed members being mounted upon the shaft, means yieldingly maintaining the shaft in a normal position, and means operable during the operation of the machine for actuating the shaft in opposition to the yielding-maintaining means While maintaining the gears in meshing relation to adjust the feed means.

59. A skiving machine having, in combination, a skiving knife, a carrier having a bearing, a shaft mounted to rotate in the bearing, a feed roll and a feed disk for feeding material to the knife, one of the feed members being mounted on the shaft, means yieldingly maintaining the carrier in a normal position such that the effective portion of the said one feed member is disposed approximately in the plane of the cut of the knife, and means operable during the operation of the machine for pivotally moving the carrier during the operation of the machine in opposition to the yielding-maintaining means to adjust `the said effective portion of the said feed member out of the said plane of the cut of the knife, during the operation of the machine.

60. A machine of the class described having, in combination, a rotary disk skiving knife, a feed roll and a cooperating feed disk for advancing the work to the knife, means for producing relative angular adjustment between the knife and the roll to vary the inclination of the resulting scarf, a meniber, manipulation of which adjusts the roll bodily in a direction parallel to its axis, and means adapted, when actuated, to rotate the roll, said last-named means being constructed and arranged to remain operative after either or both adjustments have been made.

61. A skiving machine having, in combination, a knife for skiving the margin of sheet material, a feed roll and a feed disk for feeding the material to the knife, a spring for exerting a yielding force upon one of the feed members to normally maintain the feed, roll and the feed disk yieldingly in engagement with each other, and means operable in opposition to the force exerted by the yielding maintaining means to adjust one of the feed members.

62. A skiving maehine having, in combination, a knife for skiving the margin of sheet material, a feed roll and a feed disk for feeding the material to the knife, means for exerting a yielding force upon one of the feed members to normally maintain the feed roll and the feed disk yieldingly in engagement with eaeh other, means operable in opposition to the force exerted by the yielding maintaining` means to move one of the feed members, and means for guiding the movement of the lastnamed feed member.

G3. A skiving maehine having, in combination, a skiving knife, a driving gear, a feed roll and a feed disk for feeding material to the knife, a shaft upon which one of the feed members is mounted having a gear meshing with the driving gear so as to be driven by the driving gear, means for exerting a yielding foree upon the shaft to normally maintain the feed roll and the feed disk yieldingly in engagement with eaeh other, and means operable in opposition to the force exerted by the yielding maintaining means for relatively adjusting the gears pivotally while maintaining 'their meshing relation, the adjusting and yielding maintaining means cooperating to maintain the gears yieldingly in pivotally adjusted relation.

(Sil. A skiving machine having, in combination, a knife for skiving the margin of sheet material, means for feeding material to the knife, a shaftfor driving the feed means having a gear, a shaft for driving the feedmeans shaft having ay gear meshing with the feed-means-shaft gear, and means freely operable at all times during the operation of the `maehine for pivotally moving the feed-means shaft during the operation of the machine, the gears liieing adapted to be maintained in mesh during the pivotal movement of the feed-nieans shaft.

ANDREW R. RlDDER-STROM.