US623325A - Channeling-machine - Google Patents

Description

No. 623,325. Patented Apr. I8, I899.

A. F. LITTLEFIELD.

CHANNELING MACHINE.

(Application filed Jan. 10, 1898.)

(No Model.) 3 Sheets-Sheet l.

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m. 623,325. Patented m l8, I899; A. F. LI TTLEFIELD. CHANNELINB Momma.

(Application filed Inn. 10, 1898.) I a Sheets-:Shuet 2.

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No. 623,325. Patented A pr. l 8, I899. A. F. LlT-TLEFIELD;

CHANNELING MACHINE.

(Application 510d Tan. 10, 1898.)

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GHANNELlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 623,325, dated April 18, 1899.

Application filed January 10, 1898. Serial No. 666,163. (No model.)

T 0 all whom, it may concern:

Be it known that I, AUGUSTINE FRANK LIT- TLEFIELD, of Lynn, Essex county, Massachusetts,have invented an Improved Channeling- Machine, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of a channelingmachine embodying my improvements. Fig. 1 is a view from the side opposite to that shown in Fig. 1. Fig. 2 is a section on line 2 2 of Fig. 1. Fig. 3 is a plan view. Fig. 4 is a side elevation ofthe swingingframeandconnected parts. Fig. 5 is a plan of the swinging frame. Fig. (3 is a side elevation of the rising frame and connected parts. Fig. 7 is a plan of the rising frame. Fig. 8 is a front elevation of the swinging frame and connected parts.

I have shown in the drawings and shall describe in this specification a channeling-knife which is-vibratory or reciprocating, that being, I believe, the most useful, the knife being moved back and forth rapidly by a carrier, to the outer end of which it is secured, the cutting action of the knife taking place when the knife is moving in a direction op posite to that in which the leather is being fed and the feeding action of the leather being in part accomplished while the knife is making its back stroke, the movement of the leather being continuous. In this way the channel is cut by a series of short strokes of the knife. The knife is withdrawn after every stroke and again forced forward against the moving leather. The practical result of this method of forming the channel is that it can be out without heating, straining, or binding, while the tendency to dig in, caused by variations in the density of the stock, is obviated by the withdrawal and fresh start at 4 every stroke, an d for the same reason changes in the direction of the channel are easily made, it being easy to pivot in order to channel around a sharppointed toe part of a sole.

In the drawings, A represents the frame of the machine, 13 the main shaft, and B the driving-pulley on that shaft. The main shaft is carried in bearings b b b, and between bearings Z) U the shaft is formed as an eccentric b and between bearings b b it is formed as an eccentric I). (See Fig. 2.) A

fork cl embraces eccentric b the fork d being carried at the free end of an arm D, whose other end is fast to an upright pivoted shaft D. The fork dis secured on arm D by means of a tang d and a nut (P, the object of this mode of connection being to allow the shaft D to be lifted while in operation and to permit the fork to turn slightly as the arm D swings in order .that the inner faces of the fork may preserve a proper relation to the surface of the eccentric-shaft, as will be obvious. The shaft D is supported at the bottom by an adjusting-screw d in the frame of the machine and is steadied by bearings d d, fast to a rising frame D This rising frame D carries, besides the knife-shaft D, a feedwheel E and a presser-foot F, the feed-wheel being upon the end of a shaft 6', carried in a bearing in the rising frame D and connected by a universal joint 6 with a shaft 6 which is driven through a pinion e the pinion e and the shaft 6 being supported by a bearing a on the frame A of the machine. The presserfoot F is fast to theframe D At its upper end the shaft D is pressed downward by a spring d, the pressure of which is regulated by a screw (1 the ends of the spring bearing upon collars (Z d u pon the screw 61 at the head of the shaft D, respectively, and the screw working in a bracket a on the frame of the machine. At the bottom of shaft D is a knifecarrier D properly'formed to receive and retain the knife (1 the function of which is to cut the feather-edge or shoulder upon the edge of the sole.

It will be clear that the shaft D is capable of upward movement against the force of spring (1, and that it may be moved in either direction upon its axis, and that at each revolution of shaft B the arm D will be moved to and fro upon its axis through the fork (Z engaging the eccentric part b of the shaft B. The pivoted shaft D will therefore be rocked and the knife d vibrated.

Mounted upon a screw-threaded portion of shaft D are a nut d and a check-nut 61 the nut (Z being set down upon or nearly upon the top of the rising frame D so that any upward movement of the frame will carry with it the shaft D. The rising frame is supported upon a spring-rod G, to the upper end of which it is fast, this rod G having a capacity for upward movement in bearings in the frame of the machine against the force of the spring g. It will now be obvious that any variation in the thickness of the stock fed to the machine (the revolving table upon which the stock is supported being carried in bearings in the frame of the machine) will,thr0ugh the presserfoot F, which is fast to the rising frame D lift the rising frame and those parts carried by itnamely, the feed-wheel E and the shaft D-the shaft D being forced up through nut d against the force of spring d and the entire frame being forced up against the force of spring g on rod G, so that as soon as the thickness has passed under the presser-foot the frame D and the shaft D will be thrown down again by the springs d and g. The joints and bearings of shaft 6 are loose in order to' permit this slight upward movement caused by uneven stockwithout undue strain or binding, and the connection between the shaft D and the eccentric Z) on shaft B being by a fork d upward movement of the parts has no effect upon the connection.

Themechanism which has so far been described is related exclusively to the operation of the feed-wheel E and the shaft D, which carries the knife for cutting the featheredge channel, so called.

Upon the opposite side of the feed-wheel E from the knife-carrier D and the presserfoot F is another knife-carrier, which carries the knife for cutting the channel, and a corresponding presser-foot for regulating the depth of that channel. This knife'carrier, its operating-shaft, and the presser-foot are carried by a swinging frame H (see Fig. 4,) pivoted at a to the frame A of themachine. This swinging frame is formed in two parts. That part which is pivoted directly to the frame of the machine is shown in plan at Fig.5, and this part carries the main shaft B,with its two eccentric portions 11 b". The swinging frame Haas has been said,is pivoted at a to the frame A of the machine, and by this arrangement the k nife-carrier Hiknife hland presserfoot J may be lifted whenever the rising frame D is raised, the carrier, knife, and presser-foot swinging upon the arc of a circle of which a is the center whenever the rising frame L in rising, through screw d, tilts frame H Obviously, also, if itis not desired to lift the knife 7L7 to correspond with every upward movement, however slight, of frame D and its knife (Z by adjusting screw (1. down any required play within certain limits can be given to knife (Z without affecting knife 7L The tilting of swinging frame H by the passage of an inequality under presser foot J will not, obviously, in any way affect the feather-edge knife d which is carried by rising frame D because swinging frame H is not fast to the rising frame, but merely projects over a part of the rising frame D and is thus in the path of that frame when it lifts. The connecting-bolt h merely preserves the relations of the two frames in respect of displacement crosswise of the length of the frames, but permits changes of relative position in a perpendicular direction. For the purpose of placing stock in the machine to be operated upon the lifting of the rising frame will raise also the swinging frame through screw C The working of the feather-edge knife, which is operated by shaft D, by the eccentric b has already been described. The eccentric 12 works the shaft H, which carries at its lower end the knife-carrier H The connection between the shaft H and the eccentricb on shaft 13 is made by an arm I I',pinned to shaft H and carrying a fork 72, which is secured to the arm H by a tang 7t and nut It? all much the same as the means employed to connect shaft D with shaft 13. The shaft II is carried, however, by a part H of the swinging frame H which part H is mounted upon the outer end of the frame in such a fashion as to be capable of limited lateral adjustment under the control of adjustingscrews, as will be plain from an inspection of Figs. 4, 5, and 8.

In Fig. 8 the control of part H is most plainly shown, the adjusting-screw being marked 72. This adjusting-screw is held by a bracket 77) fast to the outer end of frame H the head of the screw being upon the outer side of the bracket and a collar fast to the screw h being upon the inner side of the bracket. The screw-threaded point of screw h 'enters a screw-threaded aperture in part H When the adj Listing-screw is turned, it will be clear that as the screw itself is held against longitudinal movement the part H must move according as the screw is turned.

By means of this lateral adjustment of part H the relative position of knife 7L7 with regard to knife (Z may be altered so as to bring it to either side of knife d, as may be desired. The outer end of the main part of the swinging frame is slotted to permit of the passage of the shaft H and the presser-foot J and to afford room for lateral movement of the two shafts. The arm H carries upon its upper surface about midway of its length a bracket for the adjusting-screw 77. of the presser-foot. The adjusting-screw h for the shaft H iscarried by the part H of the swinging frame. The presser-foot is pinned to the arm H by a set-screw, and it is also connected tothe shaft H at its lower end by a bracket 7L5. The knife-carrier H upon the lower end of the shaft H projects to bring the knife 7L7 in line with the 'presser-foot. It will now be clear that the revolution of shaft B will par-.

when the set-screws which connect the shaft and presser-foot to their operating parts are loosened to permit of perpendicular adjustment.

A spring-rod M is pinned to the swinging frame, (see Fig. 4,) the upper end of which passes through an aperture in a bracket a on bearing against the frame of the machine.

Another adjusting-screw c1 (see Figs. 6 and 1) on the rising frame bears against the under side of the swinging frame; A headed bolt 71., fast to the swinging frame and passing through an aperture in the rising frame, binds the two frames together against lateral movement, while permitting a change in their relative positions perpendicularly.

The revolving table K, which supports the stock, is carried in a bearing 7; in the frame of the machine and is driven through beveled gears 7; k shaft 7& and pinion M from the crank-pinion which drives also the feedwheel pinion e the proportions of the pinions being such as to give the same -surface speed to the table K and the feed-wheel E. The edge guide L slides in bearings in the frame of the machine and is'controlled by a bellcrank lever l and spring-rod Z, the spring Z of which keeps the edge guide pressed to place until retracted by the foot of the operator.

The mode of operation is as follows: The adjustment of the knives and their respective presser-feet having been determined by means of the adjusting-screws (Z (Z k 7L 7%, the spring-rod G is first lifted by the operator against the force of its spring g. This lifts the rising frame D and everything carried by that frame. It also lifts the swinging frame I1 and everything carried by that frame through the adj listing-screw (Z which bears against the bottom of the swinging frame. The sole to be channeled is then placed upon the table K, and the rod G be ing released the knives are pressed down upon the upper surface of the sole by the springs (Z and m. The shaft Bis then set in motion, causing the knives (Z and 7L7 to be vibrated orreciprocated, and the crank-pinion 75 being revolved the feed-wheel E and table K feed the stock, the feed-wheel pressing against the stock with a pressure determined by the adjustment of spring 9 and serving, in addition to its feeding function, the purpose of a supplementary presser-foot for both knives. Any variation in the thickness It will be obvious that this of the stock passing under presser-foot F will lift frame D shaft D, and the knife (Z which it carries, the presser-foot F being clamped to the frame D The lifting, however, will not affect the continued operation of the shaft D, for by means of the siot-and-eccentric connection (see Fig. 2) the connection of the arm D with the shaft B is not affected. The lifting will be accomplished against the force of spring g, which will throw the frame D down as soon as it is permitted to do so. Any variation in the thickness of the stock passing under the presser-foot J will lift the swinging frame 11 the presser-foot J being fast to that frame, against the force of spring on, which will throw frame H down as soon as it is permitted to do so.' Obviously the lifting of frame H will not affect the operation of shaft H, which is driven by a slot-and-eccentrio connection with shaft B, as is shaft D.

The adjustment of the relations of the shaft H and the carrier H and the knife M, which it carries, with presser-foot J and the fixingof the depth of the channel are effected by loosening the set-screw which connects the presser-foot J with the arm 11. The presserfoot may then be adjusted to any required position with regard to the carrier H and when the presser-foot is again connected to the arm both shaft H and presser-foot J, so connected to it, may be raised or lowered together by means of screw 71.

What I claim is 1. In a channelingmachine, the combination of a feed-table carried by the frame of the machine; arising frame; afeed-wheel carried by the rising frame; an arm pivoted in that rising frame and carrying a slotted piece at its end; an eccentric adapted to rotate within that slot and a knife moved by the movement of the arm, all organized and operating substantially as described.

2. In a channeling-machine, the combination of a revolving feed-table carried by the frame of the machine; a rising frame; a feedwheel and a pivot-shaft carried in that frame; an arm fast to the pivot-shaft and carrying a slotted piece at its free end; an eccentric adapted to rotate within that slot and a knife secured to the pivot-shaft, all organized and operating substantially as described.

3. In a channeling-machine, the combination of a frame; a pivot-shaft carried in that frame and longitudinally adjustable; a knifecarrier fast to the shaft; an arm fast to the shaft; means to swing the arm and its pivotshaft; a presser-foot detachably secured to the arm; all organized to permit adjustment between the knife-carrier and presser-foot and to swing the carrier and presser-foot together with the pivot-shaft, substantially as described. j

4. In a channeling-machine, the combina tion of a feed-table and a feed-wheel; a reciprocating knife upon each side of the feedwheel; a pivoted knife-carrier for each knife and an eccentric-and-slot connection between knives upon each side of the feed-wheel; a i

each knife-carrier and the driving-shaft, all each other, and an eccentric-and-slot eonnec- IO organized and operating substantially as detion between each knife-carrier and the drivscribed. ing-shaft, all organized and operating sub- 5. In a channeling-machine, the eoznbinastantially as described; tion of a feed-table and a feed-Wheel; moving AUGUSTINE FRANK LITTLEFIELD Witnesses:

M. L. ANDREWS, O. R. MITCHELL.

pivoted knife-carrier for each knife; means to vary the relative horizontal and vertical position of the knife-carriers With regard to

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