US1125550A - Rough-rounder and channeling machine. - Google Patents

Description

- L. E. JOHNSON. ROUGH ROUNDER AND GHANNELING MACHINE.

APPLICATION FILED MAY 17, 1912.

Patented Jan. 19, 1915.

8 SHEETSSHEET 1.

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LawremzaEJohnson;

HE NORRIS PETERS CCL. PHO r0 LfTl/fi WASHING roN. D C,

L. 1-3. JOHNSON. ROUGH ROUNDEB. AND GHANNELING MACHINE. APPLIOATION FILED MAY 17, 1912.

1,125,550. Patented Jan. 19, 1915.

3 SHEETS-SHEET 2.

Wi leases,- Inventor,

THE NORRIS PETERS 60., PHOTKLLITHOH WASHINGTON, D. r

L. E. JOHNSON. ROUGH ROUNDER AND OHANNELING MACHINE. APPLICATION FILED MAY 17, 1912.

1,125,550. I Patented Jan. 19, 1915.

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LawrenceE.Jo71/ns0n THE NORRIS PETERS 60.. PHOTO-LITHQ. WASHINGION, D c.

1 U rs STATES PATENT oFFroE.

LAWRENCE J OI-INSDN, OF WINTHROP, MASSACHUSETTS.

ROUGH-BOUNDER AND QHA'NNELING MACHINE.

To all whom it may concern Be it known that I, LAwRnNoE E. JoHN- SON, a citizen of the United States, and a resident of Vinthrop, in the county of Suffolk and Commonwealth of Massachusetts, have invented certain newand useful Improvements in Rough-Rounder and Channeling Machines of which thefollowing 1s a full and exact description. This invention relates to machines employed in the production of boots and shoes, and has for itsobject the construction of a simple, convenient, durable, easily operated and perfect working machine roughly cutting out the outline, or rough rounding as it is termed, of a piece of sole leather after the same has been tacked upon the insole of a boot or shoe, and simultaneously therewith cutting the channel necessary for a welt-sewed shoe.

Referringto the drawings forming part of this specification, Figure 1 is a perspective view of a machine embodying my improvements. Fig. 2 is a perspective view on a magnified scale, of the lowerend of the rough rounding chisel. Fig. 8 is a side elevation of said machine. Fig. 4c is a detail sectional view of the presser foot and channeling knife. Fig. 5 is a perspective view of the main part of the presser foot, showing the knife holding device. Fig. 6 is a front elevation of said machine with parts thereof removed. Fig.7 is aface'view of the cam by means of which the} rough rounding chisel is given a lateral movement for the purpose of feeding the work along, certain parts being shown in connection with the same. Fig. 8 is a front elevation of the said chisel-,jshowing its reciprocating carrier bar and; its throw-adjusting device.

While there are four functions performed by this machine, that of cutting or rough rounding the leather, feeding it along upon the supporting shelf,.holding it in place by a presser foot, and cutting the channel, I have so arranged the parts that the rough rounding and the feeding are both done by the same member, and the presser foot and the channel cutting knife are united.

. F or the rough rounding, I provide a vertically reciprocating chisel 1 adapted to descend almost into touch with the work-supporting shelf 2, and thereby penetrate the outsole 3, as indicated in Fig.3. By sh ft ing the shoe and sole for a distance nearly Specification of Letters Patent. Patented Jan. 19 1915 Application filed May 17. 1912. 1 Serial No. 697,930.

equal to the width of the chisel in the direct on of the plane of the latter, a substantially continuous cut is made through the leather. tached sole, the chisel is given a lateral or step by step motion in addition to its vertical reciprocation, so that the chisel itself will movesaid members. To this end, at the moment the chisel has penetrated about half way through the sole, it begins its lateral movement, carrying the sole and shoe With it, until by the time the chisel has cut down through the sole, the latter is shifted to its next position. Then the chisel rises, returns i to its former vertical location, and descends for its succeeding out. These cuts are made properly to aline themselves by means of the adjustable gage 4: located close beneath the shelf 2, and against which the edge of the insole and side of the shoe upper are kept carefully pressed by the attendant.

For giving the chisel the above described motions, it is held by the carrier bar 5, as shown in Figs. 1 and 8, and said bar is joined by a pitman 6 to a crank pin 7 projecting from the face plate 9, said face plate being properly rotated by a shaft 10 to which power is communicated through a For thus shifting the shoe and atturn in an eccentric sleeve 12 gripped by the split upper section of said pitman. By loosening the screw 13, said sleeve can be turned enough properly to adjust the chisel, and can then be tightened up again.

The lateral movement of the chisel is produced by having the grooved block 14 in which said bar 5 reciprocates, rigidly connected with a horizontally slidable bar 15, the latter being supported within a groove or ways 16 formed close behind the surface 17 of the frameworlgon which surface the block 14 and bar 5 are movable. The bar 15 is operated through a lever 19 fulcrumed at 20, and having a roll 21-fitting in the closed cam 22 formed in the extension 28 of the face plate 9, as shown in Figs. land 7.

To keep the sole on the shelf as the chisel rises therefrom, a presser foot 25 is provided, carried by the lever arm 26 which isfulcrumed on the spindle 27 (Figs. 2 and. 6.), a tension spring 29 holding the presser foot iio upon the work. A hand operated cam 30 enables the presser foot to be raised, for the application and removal of the work.

As shown in Figs. 1 and the presser foot carries a blade 31 held obliquely; such blade being preferably supported in a slot or seat 32, (Fig. 5), and is fastened therein by screws 33. This blade cuts the sole byv being drawn toward the chisel, by means of an equal sliding movement given to the spindle 27 and hence to the lever arm and presser foot. This .movement is given immediately before the chisel has fed the work to its new position and hence before the latter has made its lateral stroke, sothat while the cutting of the channel by the blade is thus being done, the chisel is firmly embedded in the leather and is consequently firmly holding it from slipping. This movement is made very quickly, as is also the return of the blade and presser foot to their former positions,so that both occur before the chisel leaves the leather. Moreover, while the blade and presser foot are thus returning, and synchronously therewith, the chisel is given its lateral movement, so that the work is given its feeding shift by the combined action of the chisel, the blade 31 and the presser foot. These movements of the lever arm 35 and connected parts are produced through the lever 35 (Fig. 6) fulcrumed at 36, and having a roll 37 bearing against the cam 39 mounted on the shaft 10, the lower end of said lever acting against the spindle 27 which is slidably supported by the framework. A helicalspring 40 located on said spindle between the framework and a shoulder 41 on the spindle, acts to return the parts to their normal positions. The quickness of said movements is indicated by the shortness of the cam-lug 4:2, in comparison with the remainder of the cams periphery. Although I have illus trated an open cam for the actuation of the presser foot and blade, I do not restrict myself thereto.

j Inasmuch as the lateral pressure of the chisel in feeding the work is toward the cuts 7 previously made thereby, and the chisel is liable to travel back into such open cut instead of performing the desired feeding function, I provide the chisel l or the bar 5 with a projection or awl adapted to penetrate the work in line with the chisels edge but at a limited distance therefrom, and at the side not yet cut by the chisel.

The preferable way for providing such awl consists in making a deep notch 43 in the edge of the chisel itself, as shown in Fig. 2, thus forming such a feeding awl e5.

chisel I find to be ample for insuring the forcible propulsion of the sole and shoe therewith, especially where the same acts in conjunction with the return travel of the presser foot, as above described. It also serves tohold the sole from being drawn back when the channeling blade performs its task.

By having the lateral shift of the chisel not equal to the entire width thereof, but simply to the wide chisel-section 44, said narrow neck of leather is each time severed by the succeeding stroke. As shown in Fig. 3, the shelf or operating table 2 is given a feather edge in order readily to enter between the insole and outsole. It is alsomade removable for renewal or sharpening.

The means for adjusting the gage 4 comprises the rod 48 slidably supported in the framework, and threaded at the end opposite the gage. Upon this threaded section turns a hand-wheel nut 46 having an annular groove 47 in its hub, which groove is engaged by the fixed tongue 49, asshown in Fig. 3. By rotating said nut, the rod is advanced or retreated, and the gage adjusted accordingly.

In the operation of this machine, the shoe is pressed against the gage'e, with the sole substantially horizontal and uppermost, and the feather edge ofthe shelf or table 2 penetrating between the insole and the outsole 3 tacked upon the same; the presser foot having been elevated by a rearward swing given to the handle of the cam 30. The machineis now set in motion, the chisel descends into the. outsole, (the presser foot having been allowed to rest upon the work), the presser foot moves toward the right, carrying means whereby the channel is out, then both the presser foot and chisel move toward the left, the chisel rises, moves toward the right, again descends, and so the operation continues, the attendant keeping the shoe pressed against the gage and suitably turning it at the toes to properly present the work to the cutting members. Throughout the entire operation, the work is under the attendants. observation, the necessary motions are simple and easily made, and the time required for rough rounding and channeling a sole is remarkably brief.

So far as I am aware, this is the only machine of the kind wherein the shoe is supportedwith the sole uppermost and in a horizontal position, and the cutting is-done by a vertical chisel.

What I claim as my invention and for which I desire Letters Patent is as follows, to wit V 1.. A rough rounder comprising an operating table or shelf, a cutting member coacting with said table, a presser foot adapted to press the work upon said table and to be given a forcible movement parallel with said cutting member, and a blade carried by the presser foot and adapted to cut into the work, said presser foot being adapt-v ed to move and force its blade along the Work when the cutting member is in en gagement with the'Work.

2. A rough rounding and channeling machine comprlsmg a supportmg table or shelf, a reciprocating chisel coacting therebeing adapted to move together and to feed the work.

3. A rough rounding and channeling machine comprising an operating table, a chisel adapted to be reciprocated into approximate contact with said table, means for forcibly moving said chisel laterally, a presser foot adapted to press the work upon the table and to be forcibly moved parallel with said chisels edge, and an'obliquely held blade carried by said presser foot in cutting relation to the work,rsaid presser foot being adapted to move and cut the work While the chisel is in engagement with said Work but substantially stationary, and then the chisel and presser foot being moved together in the direction of'the chisels edge, after which the chisel is elevated and returned to its first position.

4. A rough rounding and channeling machine comprising a table or shelf, a vertically reciprocating cutting member, a feed awl rigid therewith, means for laterally moving said cutting member and aWl for feeding the work While being penetrated thereby, an obliquely set grooving knife adapted to be operated while said cutting member and awl are in engagement With the work, a presser foot, and means for moving the presser foot and grooving knife simultaneously with the lateral movement of said cutting member and in the same direction therewith.

5. A rough rounding and channeling machine comprising a Work table, a shaft suitably supported above said table, a vertically reciprocative cutting member operated by said shaft, a horizontally movable member carrying said cutting member, means controlling said movable member operated by said shaft, a vertically and horizontally movable presser foot, a channeling blade carried by said presser foot, a spring holding the presser foot down upon the Work, and a cam mounted on said shaft and adapted for laterally moving said presser foot.

In testimony that I claim the foregoing invention, I have hereunto set my hand this 29th day of April, 1912.

LAWRENCE E. JOHNSON.

Witnesses JoI-IN MCGOWAN, ApB. UPHAM.

Copies of this; patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). C.

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