US1213802A - Channeling-machine. - Google Patents

Description

F. E. BERTRAND.

CHANNELING MACHINE.

APPLICATION FILED NOV. 21. I914.

1,213,802. Patented Jan. 23, 1917.

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I F. E. BERTRAND.

CHANNELING MACHINE. APPLICATION FILED NOV. 21. 1914.

1,213,802. Patented Jan. 23, 1917.

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CHANNELING MACHINE.

APPLICATION FILED Nov. 27. 1914.

1,213,802. Patented Jan. 23, 1917.

3 SHEETSSHEET 3- UNITED STATES PATENT OFFICE.

FREDERIC E. BERTRAND, OF LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE I MACHINERY COMPANY, OF PA'IERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

CHANNELING-MACHINE.

Specification of Letters Patent.

Patented Jan. 23, 1917.

To all whom it may concern:

Be it known that I, Fnnonnic E. BERTRAND, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Channeling- Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to channeling ma chines and more particularlyto channeling machines for turn work.

In making turn shoes the sole is prepared by providing a marginal channel as in the making of a welt insole and by providing outside of said channel a parallel marginal shoulder. In one type of turn shoe soles the channel and the'shoulderextend completely around the sole, While in other types one or both of said cuts may extend only to the shank, or the channel may be continuous and the shoulder runs only to a point on each side of the sole about opposite the breast line. In performing the channeling and shouldering operations, which usually occur simultaneously, by means of two knivesfitted in one machine the sole is laid with its grain side upon a suitable support and is advanced through the machine by suitable feeding means.

Heretofore, in making the shoulder cut the shoulder knife has been generally fed in and the cut started at the back of the heel across the heel seat and after completion came out through the heel seat again. In former machines, when the shoulder cut had to start at the breast, or ball line, the

shoulder knife had either to ride on top of the sole against the tension of its strong.

pressure spring .and gradually work its way down to the proper depth of shoulder, or start at the edge of the sole at the full depth of shoulder and then as the sole advanced gradually work over against the edge gage to obtain the desired width of shoulder out. When in such machines the knives are at a point opposite where the cut started, they are quickly cut out by means of a suitable knife raising device. As a result the ap pearance of the sole edge on the finishing side was different from the starting side. In a turn sole, as is well known to those skilled in the art, the edge appearance is vital, so that this maintaining of the sides. caused a rejection of many soles or necessitated that each sole should be trimmed by hand to make the. cuts at each side correspond. This practice was, therefore, expensive.

The object of the present invention is to overcome and eliminate from channeling machines of the type described the disadvantages just adverted, to.

In accordance with this object a feature of the present invention contemplates the provision in a turn channeling machine, that is equipped with a shoulder knife, or with channel and shoulder knives, of a shoulder knife holder so constructed and arranged that its knife can be started into the work at any desired point along the margin of the sole, and which will quickly and positively take the proper depth of shoulder at the full width of feather. Preferably this feature of the invention comprises a tilting shoulder knife that will enter the work at an angle and then be adjusted to a cutting plane parallel with the surface of the sole supporting table. Thus the shoulder knife is entered in the sole in a manner substantially like its withdrawal and the starting and finishing cuts of the shoulder will give a like appearance to each side of the completed shoe. It should. be distinctly understood, however, that the invention defined. in the claims is not limited to this particular mode of attaining the object of the invention, but is broad enough to cover any relative movement of the knife and sole to the end that the knife may enter the face of the sole at an angle.

A further feature of the invention contemplates the provision of means operating to set the shoulder knife at a proper angle to operate on new work upon the completion of an operation on a sole. In carrying out the preferred design of this feature of the invention the mechanism for lowering the work table when the sole is removed, is utilized. Operative connections are provided such that when the work table is lowered to facilitate removal of the sole from the machine the shoulder knife will be automatically tilted back to its initial angular position for starting a cut in a new sole.

Withthe above objects in view and such others as may hereinafter appear, as will be readily recognized by those skilled in the art, the invention comprises the features and combinations of parts hereinafter described and particularly pointed out in the appended claims.

The invention, as applied to a turn channeling machine of the type illustrated and described in the inventors United States Patents No. 1,023,801, dated April 23, 1911, and No. 1,030,710, dated June 25, 1912, is illustrated in its preferred form in the accompanying drawings, in which:

igure 1 is a rear elevation of said machine with the improved shoulder knife operating mechanism incorporated therein, the shoulder knife presser foot having been broken away for clearness; Fig. 2 is a left hand side elevation of the machine shown in Fig. 1, with the channel knife block also removed so as to better disclose the feature of the present invention; Figs. 3, 4 and 5 are detailed side elevations of the shoulder knife and associated parts showing the positions it assumes in starting a shoulder cut; Fig. 6

is a plan view, with the shoulder knife in section, of the shoulder knife holding barrel, on the line 66 of Fig. 5. Fig. 7 is a vertical sectional view of the knife barrel and its support, looking in the direction of the arrow on line 7-7 of Fig. 6. Fig. 8 is a detail view showing the relation of the pawl shield to the knife block segment when starting the shoulder knife out.

In the embodiment of the invention illustrated in the drawings, the machine frame 1 carries a vertical sleeve 2 in which is slidably mounted the spindle of the work table 3. The work table is lowered for the insertion and removal of work beneath the knives by depressing a treadle connected with rod 6 (Fig. 1). A bell-crank 5, held by a spring 4, is pivoted at 6 to a sleeve clamped on the spindle of the work table. This bell crank is moved by the rod 6. A link 7 pivoted to the sleeve 2 is connected to the bell crank 5 by a pin 7 These parts form an inverted toggle so arranged that a depression of the treadle will throw the link 7 back and permit the work table to be drawn down. The machine frame 1 supports a knife carrier 14 pivotally mounted at 15 which pivot permits a swinging movement of oscillation of. the carrier in the line of feed. Within the carrier are held a pair of vertical slides upon which the channel and shoulder knives are mounted. The mechanism for mounting and operating the knives may be, and preferably is, similar in all respects to that shown in the inventors United States patents hereinbefore referred to, and, therefore, need not be described in detail herein. A block 19 is attached to one of the carrier slides and in this block is clamped the channel knife 18. A shoulder or edge knife 57,

carried by a rotatable knife holder 56 mounted in a knife block 48 which is clamped to the other carrier slide 16 by a set screw 60 (see Figs. 4, 5 and 6). These parts will be described in detail later. Mounted on the frame adjacent the knife carrier is a vertically reciprocating work retainer foot slide 20 which is actuated from the main driving shaft A, as described'in the patent hereinbefore referred to. Yieldingly mounted on the slide 20 is a sole holding foot 21 attached to a rod 22, held down by a spring 23, which is adjustable through the lock nuts 23. The upper end of the rod 22 is secured to the slide 20 by means of lock nuts 24 as in said patent.

The shoulder or edge knife holder 56 is normally held in the angular position shown in Fig. 3, and after the cut is started is rotated to change the knife from its angular position to its usual cutting position, as shown in Fig. 5, by means of novel operating mechanism, a part of which is brought into operative position by the vertical movements of the work retainer rod 22. This latter train of mechanism is shown more particularly in Figs. 1 and 2. Referring first to Fig. 2 between the lock nuts 24 there is clamped a bracket 26. A support 25 rigidly mounted on the slide 20 adjacent the bracket 26 carries a. bell crank lever 2729 pivoted thereto at 28. The arm 27 of the bell crank lever is pivotally connected loosely to the bracket 26, so that any relative movement between the rod 22 and slide 20 will actuate 0 the bell crank 2729. A link 30 connects the bell crank lever 27-29 with a second bell crank lever 32-33, said latter bell crank lever being pivotally hung in a bearing on a second support 31 mounted on the knife car- 105 rier 14. A vertically reciprocatory rod 36 extends downward from the arm 33 of the bell crank 3233 at the side of the knife carrier 14 (Fig. 2). This rod isguided in its movement by means of set screws 3738 110 (Fig. 2) which are threaded into the elongated vertical'slots 47 in the rod (see dotted lines Fig. 2). At its upper end the rod 36 is provided with a slot 35 to provide for the oscillation of the support 31. The rod 36 is 115 reciprocated by the movement of a roller 34, mounted on a stud in the end of the arm 33, of the bell crank 3233, engaging in the cam slot 35. The proximate actuator which rotates the barrel 49 so as to turn the 120 shoulder knife to its normal cutting plane, comprises a pawl 40 pivoted on a pin 39. (See Figs. 3, 4 and 5). At the lower end of the rod 36 the pawl 40 carries a lateral offset 43 (Fig. 6) which rests on'a ratchet 1 5 shield 69, to be described later, and its tail 41 carries an adjustable stop screw 42. On the rod 36 adjacent the stop 42 is a housing 45 which holds a spring pressed plunger 46. The plunger 46 bears on the pawl 4-0 and 1 0 tends to keep the stop screw 42 in contact with the housing 45.

The mechanism coiiperating with the pawl 40 to effect an annular adjustment of the shoulder knife comprises the following parts:

011 the edge knife slide 16 of the knife carrier 14 there is mounted the knife block 48 which supports the rotatable edge knife holder 56 (Figs. 3 to 7) which has already been referred to.

The knife holder is provided with two, spaced upstanding hubs 49 and 50 (Fig. 6) by means of which the holder is pivotally mounted upon the block 48. To this end a pin 51 is passed through the hubs and through a hub 48 on the lower end of the block 48. The pin 51 is rigidly held in the knife block by a set screw 52. Integral with the knife holder 56 is a segment 63 which. projects from the periphery of the hub 50 and is provided with two sets of teeth 64 and 65. The set 64 comprises two teeth at the lower end of the segment which coiiperates with a locking pawl 54 pivotally mounted in a bracket 53 (Fig. 7) on the knife block 48. This pawl 54 is yieldingly pressed against the teeth 64 by means of a spring pressed plunger 62 acting on a lug 61 carried by the tail of the pawl. The set of teeth 65 comprises two teeth at the upper end of the segment which coiiperate with the pawl 40 heretofore described, as the knife carrier 14 oscillates. The knife holder 56 is normally held in its tiltedposition, the shoulder knife being then held at an angle to the surface of the table 3, by a coiled spring 66 which has one end attached to the knife block 48, and its other end connected with the rotating segment 63 (see Fig. 6).

The particular angular position shown in Fig. 3 is maintained by reason of the engagement of a lug on the lower end of the segment with the locking pawl 54.

It is convenient at this point to describe the operation of the machine. Assuming that a sole has been placed in a machine, as indicated in dot and dash lines (Figs. 3, 4, and 5) the first action that occurs when the sole is clamped to the work support is a compression of the spring 23 on the work retainer rod 22 due to the upward movement of this rod when the work retainer foot 21 meets the stock. This upward movement of the rod 22 lifts the lock nuts 24 and consequently raises the bracket 26 relative to the support 25 on the work retainer slide 20 which carries the bell crank 27-29. The relative movement between these two parts imparts a rotative movement to the bell crank which draws the link 30 to the right (Fig. 2) and moves the roll 34 down in the slot at the u per end of-the depending slide rod 36. This movement of the cam roll 34 forces the rod 36 downward and brings the lateral lug 43 on the pawl 40 into engagement with the shield 69 hereinbefore re ferred to as shown in Fig. 4. The shield 69 is carried by the inner end of the pin 51 upon which the knife holder 56 is pivoted. Therefore, the knife holder and the segment 63 are movable relatively to the shield. The shield is provided with a horizontal edge at its top, and a beveled edge at its forward end (at the left in Figs. 3 to 8), and when the knife carrier 14 is at the end of its backward, or cutting, stroke, as shown in Fig. 3, the forward end of the shield overlaps the second of the two teeth 65, so that only the first of these two teeth is exposed to the action of the pawl 40 (see Fig. 8). The adjustment of the shield to this position is obtained by loosening the set screw 52 and rotating the pin 51 within the hubs 49 and 50 of the knife holder. The relation of the pawl 40 to the teeth 65 of the segment 63 and shield 69, just prior to the starting of the feed stroke, is best shown in Fig. 3.

When the knife carrier 14 moves to the left (viewing Fig. 2), preparatory to performing its cutting stroke, the shoulder knife slide 16, the shoulder knife holder 56, and other parts carried by the slide are moved away from the pawl 40, the pawl yielding over the teeth 65 and lug 43 of the pawl later engaging and riding on the upper edge of the shield 69, finally reaching the position shown in Fig. 4. When the knife carrier 14 starts its backward stroke the angular position of the shoulder knife as shown in Figs. 3 and 4, where it is held by the coiled spring 66 and locking pawl 54, causes the knife to rapidly enter the face of the sole. Just prior to the completion of this first cutting stroke the lug 43 on the pawl 40 slips off the forward end of the shield 69 and permits the pawl to engage the first ofthe two teeth 65, as shown in Fig. 8, thus rotating the knife holder 56 about the pin 51 and in a direction to turn the shoulder knife back to a position with its blade parallel to the sole. The knife holder 56 is prevented from returning to its angular position under the force exerted by the spring 66 by reason of the engagement of the locking pawl 54 with the first of the two teeth 64. The mechanism might be designed so that the shoulder knife would be turned completely back to its horizontal position at the completion of this first cutting stroke, but it is considered to be better practice to employ two oscillatory move ments of the knife carrier for this purpose. It is for this reason that two teeth 65 and two teeth 64 are provided with the result that after the next feed stroke the second of the two teeth 65 is engaged by the pawl 40 and the turning of the shoulder knife to its horizontal or normal cutting position is then completed, as shown in Fig. 5. Further oscillations of the knife carrier, during the completion of the operation upon the sole, will only cause the pawl 40 to engage the second tooth 65 so that during this period the pawl is inactive to alter the position of the knife. Between each cutting stroke of the knife carrier 14 the work retainer foot 21 is lifted bodily by reason of the upward movement of the slide 20 on which it is mounted. This movement brings the bracket 26 and support 25 back to the relation shown in Fig. 2 and consequently the roll 34 is moved upward and the rod 36 lifted, but, as the pawl 40 is not required to be active during the feed stroke, this is of no consequence. Just before the performance of each cutting stroke by the knife carrier 14, the work retainer 21 moves down and engages the sole, as described in my prior patents hereinbefore referred to, thus shifting the position of the cam roll 34 in its groove and placing the pawl 40 in operative position. When no work is in the machine the vertical reciprocation of the slide 20 carries both the bracket 26 and support 25 with it, but at this time no movement is imparted to the roll 34 because the relative position of the bracket and support is not altered. At such times the bell crank 27-29 and link 30 merely oscillate about the pivot 30' in the vertical arm of the bell crank 3233. Thus, when no work is in the machine the rod 36 remains in its raised position. A preliminary adjustment of the stop screw 42 is made such that at this time the pawl 40 remains in a plane above the path of movement of the teeth 65, and, therefore, cannot engage them. The shoulder knife will remain in the horizontal position during the operation on the sole, and if the type of sole being operated upon is such that the shoulder cut does not run entirely around the sole edge the shoulder knife may be removed by treadle. The treadle mechanism, which is described in said patents hereinbefore referred to, raises the knife slide carrying the shoulder knife at such time during the feed that the termination of the cut where the shoulder knife runs out of the sole is of substantially the same characier as the starting out. Thus, the present invention provides for an appearance of the starting and finishing cuts will be the same at each side of the sole when incorporated in a shoe.

It is desirable to provide means for returning the shoulder knife to its tilted position after the completion of an operation on a sole so that it may be in proper position for starting the cut on the next sole without manipulation or adjustment by the operative. The mechanism for lowering the work supporting table may-readily be utilized for this purpose.

Referring to Fig. 1 the link 7 of the inverted toggle 5-7 is connected by a link 8 to the vertical arm 9 of a bell crank pivoted at 10 on the frame, all as shown in said prior patents. In the present machine, however, the bell crank is provided with a third arm 71 which extends to a point beneath a pin 55 projecting laterally from the locking pawl 54. With this construction when the table 3 is lowered to facilitate removal of the sole the bell crank arm 71 is actuated to engage the pin 55 and withdraw the pawl 54 from its engagement with the teeth 64. The coiled spring 66 immediately rotates the knife holder back to its angular position, this being permitted by reason of the prior removal of the pawl 40 from its engagement with the teeth 65. The amount of angular movement of the knife holder is limited by engagement of the lug 70 with the pawl 54.

Broadly considered the invention herein set forth is not limited to the use with the particular type of turn channeling machine hereinbefore described, and it should be distinctly understood that, except as specifically defined in the claims, the invention is not limited in scope to use in turn channeling machines, but may be adapted to any other insole or other type of sole channeling machines. Furthermore, the feature of the invention relating to the novel means for mounting the shoulder knife, as will readily be understood by those skilled in the art, is not limited in its application solely to use in a machine for channeling turn soles.

In several of the following claims references are made to position, and these references are to be interpreted as terms of designation and not of limitation, as obviously it is the relative position alone which is of importance.

The nature and scope of the present invention having been indicated, and its preferred embodiment being specifically described what is claimed as new, is

1. A channeling machine, having, in combination, a sole support, a sole cutting knife adapted to produce a sole cut extending parallel to the face of the sole held on the support, means to relatively move the support and knife to set the knife in a position to cut obliquely to the face of the sole for starting the out, and means to automatically change the knife from an oblique cutting position to a parallel cutting position.

2. A channeling machine, having, in combination, a sole cutting knife, a table for supporting the sole during the cutting operation, means to relatively move the table and knife to set the knife in a position to cut obliquely to the plane of the face of thesole for starting the cut, and means to automatically change the knife from an oblique cutting position to a parallel cutting position.

3. A channeling machine, having, in combination, a sole support, a sole cutting knife adapted to produce a sole cut extending parallel to the face of the sole held upon the support, means to feed the sole during the cutting operation, means to relatively move the support and knife about an axis normal to the line of cut to position the knife to cut obliquely to the face of the sole to start the cut, and means to automatically change the knife from an oblique cutting position to a parallel cutting position.

4. A channeling machine, having, in combination, a sole support, means to feedthe sole, a sole cutting drag knife rotatable about an axis transverse to the line of feed, and means controlled by the operation of the machine upon a sole for automatically rotating the knife.

5. A channeling machine, having, in combination, a sole support, a rotatable sole cutting drag knife, and means controlled by the operation of the machine upon a sole for automatically rotating the knife.

6. A channeling machine, having, in combination, a sole support, a presser foot adapted to clamp the sole upon the support, an angularly adjustable sole cutting knife, and means controlled by the operation of the presser foot for automatically adjusting the knife.

7. A channeling machine, having, in combination, a sole support, a rotatable sole cutting knife set to cut obliquely to the face of the support and adapted to enter the face of the sole at any point along its margin, and automatic means for rotating the knife into a cutting plane extending parallel with the surface of the support after it has entered the sole.

8. A channeling machine, having, in combination, a sole support, a rotatable sole cutting knife adapted to be set to cut obliquely to the plane of the surface of the support, and automatic means for rotating the knife from its oblique position to a cutting position substantially parallel to said plane wlliile the machine is in operation upon a so e.

9. A channeling machine, having, in combination, a sole support, an adjustable sole cutting knife, means for angularly adjusting the knife during the operation of the machine upon a sole, and means for preventing adjustment of the knife when the machine is running without work.

10. A channeling machine, having, in combination, a sole support, an oscillatory feeding means, a presser foot to clamp the sole upon the support, an angularly adjustable sole cutting knife, and means actuated by said feeding means for adjusting the knife.

11. A channeling machine, having, in combination, a sole support, an oscillatory sole feeding and cutting device, an angularly adjustable sole cutting, knife mounted thereon, a presser foot to clamp the sole upon the support, and means controlled by the presser footmovement to adjust the knife during the operation of said device.

12. A channeling machine, having, in combination, a sole support, an angularly adjustable shoulder knife normally set to cut in a plane oblique to the plane of the surface of the sole support, automatic means for adjusting the knife for a cut substantially parallel to the face of the support, and means for returning the knife to its normal position when the sole is removed from the machine.

13. A channeling machine, having, in combination, an angularly adjustable shoulder knife, a sole support, a presser foot to move into and out of engagement with the sole upon said support, and means to operatively connect thepresser foot to the knife to adjust the knife when clamping work upon the support.

14, A channeling machine, having, in combination, a rotatable drag knife, a sole support, a presser foot to move into and out of engagement with the work, means to operatively connect the presser foot and knife to rotate the knife when the presser foot upon the work, and means for lockin the knife in its rotated position while the fa is making a cut.

15. A channeling machine, having, in combination, a sole support, a rotatable sole cutting drag knife adapted to be set to cut obliquely to the plane of the surface of the support, a presser foot to move into and out of clamping engagement with the sole, mechanism to operatively connect the presser foot to the knife to rotate the knife while clamping the sole, means for locking the knife in rotated position, and means for rotating the knife back to its an'gular position when the sole is removed from the machine.

16. A channeling machine, having, in combination, a sole support, a sole cutting knife adapted to be set to cut in a plane substantially parallel with the face of the support, and means to automatically set t knife to cut obliquely to the plane of the face of the support after the completion of the cutting operation.

17. A channeling machine, having, in combination, a sole support, an angularly adjustable sole cutting knife, normally set to cut obliquelyto the face of the support, and automatic means to gradually cha e the angular position of the knife during t e cutting operation so that it will produce a cut extending substantially parallel with the face of the support.

18. A channeling machine, having, in combination, a sole support, a rotatable sole cutting knife set to cut obliquely to the face of the support, and means for rotating the knife during the cutting operation through successive small arcs to gradually bring the knife to a position to produce a cut extending substantially parallel with the face of the support.

19. A channeling machine, having, in combination, a sole support, an angularly adjustable sole cutting knife normally set to cut obliquely to the plane of the face of the support, a step-by-step feeding means, and means associated with said feeding means to rotate the knife to a position to produce a'cut extending substantially parallel with the face of the support operating during a predetermined number of feeding steps.

20. A channeling machine, having, in

1 combination, a sole support, means to feed the sole, an angularly adjustable sole cutting knife adapted to be set to cut obliquely to the plane of the face of the support, and means to angularly adjust the knife to produce a cut extending substantially parallel with the face of the support after the sole has been fed forward a predetermined distance.

21. A channeling machine, having, in combination, a sole support, means to feed the sole, an angularly adjustable sole cutting knife adapted to be set to cut obliquely to the plane of the face of the support, means to angularly adjust the knife to produce a cut extending substantially parallel with the face of the support after a prede termined distance of feed, and means to hold the knife in its adjusted position until the completion of the cutting operation.

22. A channeling machine, having, in combination, a sole support, an angularly adjustable sole cutting knife, an oscillatory carrier for supporting the knife having a feeding stroke and a cutting stroke, and means for rotating said knife, said means being operative during the cutting stroke and inoperative during the feeding stroke.

23. A channeling machine, having, in combination, a sole support, an angularly adjustable shoulder knife set to cut obliquely to the plane of the surface of the supportso as to enter the sole upon its flesh side at any point along its margin and quickly bury itself to the proper depth of out, and means operated by the machine for adjusting the knife to a cutting position substantially parallel to the plane of the surface of the support while the knife is being bedded to the desired depth of cut.

24. A channeling machine, having, in combination, a sole support, an angularly adjustable sole cutting knife, an oscillatory carrier for supporting said knife and feeding the sole, means to oscillate the carrier to give a feeding stroke and a cutting stroke, a presser foot for holding the sole on the support, and means connected with the presser foot for rotating the knife during the cutting stroke said means being inoperative during the feeding stroke.

25. A channeling machine, having, in combination, an oscillatory carrier, an angularly adjustable edge knife holder, on the carrier, an edge knife mounted therein, a sole support, a reciprocating presser foot adapted to clamp a sole upon the support, a toothed segment carried by said knife holder, a rod carrying a pawl connected with the presser foot, means to oscillate the carrier and means actuated by motion imparted to the presser foot when clamping a sole to place the pawl in the path of the teeth to adjust the edge knife.

26. A channeling machine, having, in combination, an angularly adjustable edge knife block, an edge knife mounted therein, a reciprocating presser foot for engaging the sole, means to actuate the knife holder, and means controlled by the presser foot for adjusting the knife holder only when a sole is engaged by the presser foot.

27. A channeling machine, having, in combination, a sole support, a rotatable knife holder havinga knife normally set to cut obliquely to the plane of the surface of the sole support, a reciprocating presser foot for clamping a sole upon the support, mechanism connected with the presser foot for rotating the knife holder to a cutting position substantially parallel with said plane while operating upon a sole, means for locking the knife holder in its rotated position, a sole support lowering means, and means actuated thereby for rotating the knife holder back to normal position.

28. A channeling machine, having, in combination, a sole support, a rotatable knife holder carrying a toothed segment, a reciprocating presser foot, a reciprocating rod actuated by the presser foot, an adjustable pawl on the rod, and means for setting the pawl to prevent engagement with the teeth of the knife block segment when the machine is running Without work.

29. A channeling machine, having, in combination, a sole support, a rotatable drag knife adapted to be set to cut obliquely to the plane of the surface of the support, and means operated by the machine for automatically rotating the knife from its angular position to a cutting position wherein its blade is substantially parallel to said plane.

cutting position when the sole is removed from the support.

31. A channeling machine, having, in combination, a movable sole support, means for feeding a sole, an edge knife for making a cut extending parallel to the surface of the sole on the support, means for holding the knife out of its parallel cutting position preparatory to starting a cut, means to adjust the knife into its parallel cutting position when starting a cut, and means to move the knife out of its parallel cutting position in moving the support to remove the sole.

32. A stock fitting machine, having, in combination, a support for engaging one side of a sole, and a, drag edge knife for engaging the opposite side of the sole, means for feeding the sole, and means to relatively move the support and knife about an axis transverse to the line of feed to set the knife in a position to out obliquely to the face of the sole for starting the cut.

33. A stock fitting machine, having, in combination, a support for engaging one side of a sole, a channeling knife and an edge knife for engaging the opposite side of the sole, means to feed the sole, means to relatively move the support and the edge knife about an axis transverse to the line of feed to set the knife in a position to cut obliquely to the face of the sole for starting the cut, and means to change the knife from an oblique cutting position to a position to make a cut extending parallel to the face of the sole.

FREDERIC E. BERTRAND.

Witnesses CHESTER E. Rooms, LAURA M. Goonnmsn.

copies of thin pltent may be obtained for five cents each, by addressing the Gomminloner of Patents,

' Washinfton, D. G."

It is hereby certified that in Letters Patent No. 1,213,802, granted January 23,

1916, upon the application of Frederic E. Bertrand, of Lynn, Massachusetts, for an improvement in Channeling-Machines, an error appears in the printed specification requiring correction as follows: Page 5,1ine 35, claim 7, strike out the word "eut0metic; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 20th day of February, A. D., 1917.

[mun] F. W. H. CLAY,

Acting Commissioner of Patent:- Ci. 1227.

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