US653016A - Heel-scarfing machine. - Google Patents

Description

No. 653, 0|6. Patented .luly 3, |900. S. J. BRISSETTE.

HEEL SCABFING MACHINE. (Application led July 10, 1899.) (No Model.) 5 Sheets-Sheet l.

m E@ "f 'Q D LQ 'Tua Nonms PETERS co. PNo'ro-Lima., WASHINGTON. u. c,

No. 653,0I6. Patented .|uly`3, |900. S. J. BRIS'SETTE.

HEEL SGARFING MACHINE.

(Application Bled July 10, 1899.) I (No Model.) 5 Sheets-Sheet 2.

m: Ncnms PETERS co, PHoTaLwno., wAsNwcTa, n c

No. 653,0l6, Patenieflurly, |900,

` S. J. BRISSETTE.

HEEL SCARFING'MAGHINE.

(Application Bled July 10, 1899.) (No Model.) 5 Sheets--Sheet 3.v

I A\ i@ 0. 0 3" W. U l... d e t .n 6 .I a P E.) mw .H6 n? Tw, P My Sam SNJ mmm Bunn c JSM S..Lw n@ H 5 Sheets-Sheet 4.

Nn Model.)

No; 653,0!6. Paten'ted\.1uly=-3,A900. S. J. BRISSETTE.

HEEL SCARFING MACHINE.

(Application med July 1o, 1899.)

5 Shasta-Sheet 5 (No Model.)

TAT-Es SAMUEL J. EETSSETTE, or SwAM'rScoTT, MASSACHUSETTS, ASSiGNoR To GEORGE A. EMERSON, oE. LYNN, MASSACHUSETTS.

HEEL-scAaFiNe MACHINE.

SVPECIFICATIONforrning part of Letters Patent No. 653,016, dated July 3, 1900. Application tied July 1o. 1899. .Serin No. 723,257. ou model.)

T0 all whom it may concern,.- f

Be it known that I, SAMUEL J. BRISSETTE, of Swampscott, in the county of Essex' and State of Massachusetts, have invented certain new and useful Improvements in Heel- Scarflng Machines, of which the following is a specification.

This invention has relation to scaring-machines, and particularly to that class employed for scarfing heels for spring-heel shoes; and it has for one object the provision of a machine in which the parts are so constructed and arranged that it is practically impossible for the operator .to have his fingers injured by the knife or cutter. Y

A further object of the invention is to provide a machine of the character specified which will make a clean cut through the heelblank whetherthe latter be leather or some composition, as pancake, which is capable of such adjustment that the scarfed edge will lie in a plane at any angle to the plane of the face of the heel, and which will possess certain other desirable or necessary features.

To these ends the invention consists of a scarng machine possessing certain novel parts or features, as fully illustrated upon the drawings, described in the following specication, and particularized in the claims.

Referring to the annexed drawings, on which similar reference characters indicate similar parts or features wherever they occur, Figure 1 represents in side elevation a machine embodying my invention. Fig. 2 represents a plan view of the same. Fig. 3 represents a longitudinal section through the machine. Fig. 4 represents the devices for varying the angle of the cutter-block. Fig. 5 represents in detailthe means for securing the guide in place'. sent the stop-motion devices. Figs. 9, 10, and 11 represent another embodiment of the invention, in' which a knife moving in a curvilinearpath is employed. Fig. 12 represents still another form of the invention, in which the cutter-block is movable. Figs. 13-and 14 represent in perspective views heels which have been scarfed byi'my machine.

The machine comprises two side standards Figs. 6, 7, and 8 repre.y

or uprights 1 2, which are suitably connected and braced by tie-rods 3, 4, 5, and 6, as shown in Fig. 3. The rear portion of each of said standards is formed or provided with bearings 7 7 to receive the crank-shaft 8, on the end of which are loosely journaled two pulleys 9 10, as shown in Fig. 2. By suitable stop motion devices, which I shall Subsequently describe, the pulley l0 may be temporarily connected to the crank-shaft to impart one rotation thereto to cause a single actuation ofthe knife. The knife, which is indicated at 11 in Fig. 3, is mounted upon the carriage or slide 12, which moves in ways formed in the forwardly-extending portion of the standards, 1 and 2. Screws 13, passed through slots 14 in the knife 1l, secure it to the slide or carriage, and in order to adjust it I provide set-screws 15 15, passed through a raised rib 16 upon the slide and-bearing against the end of the blade.

The knife carriage or slide is actuated from the crank-shaft by means of the following devices: Projecting laterally from said slide are two studs 16 16, which are connected by upwardly-curved connecting-rods 17 with 1armslS on the ends of a rock-shaft 1 9, journaled in bearings 20, formed on or secured to standards l2, as best shown in Fig. 2. Between its ends the shaft 19 is provided with another arm 21 located at an acuteangle relatively to the arms 18, as shown in Fig. 1, and connected bya bifurcated connecting-rod 22 with the crank 23 on the Shaft 8. From this construction it will be seen that each time the crank-shaft is rotated (assuming that it starts from the position shown in Figs. 2 and 3) the rock-shaft 19 will be rocked first in one direction and then in the other to move the knifevcarriage rearwardly and then forwardly. It

angle to the arms 18, moves at substantially the same rate of speed during its entire throw, being connected to the crank by the connecting-rod 22, so that it moves substantially to'- ward and from said shaft.

The bed or cutter-block relatively to which the knife moves and against which the heel A is placed is indicated at 24 and consists of a plate having trunnions 25, mounted in bearings in the side standards l 2. The removable caps 26 of said bearings are held in place by screws 27, passing through ears 28 on the standards and nuts 29 on the ends of said screws, which bear against said caps. The trunnions are so located that the axis thereof lies in the plane of the face of the cutter-block, which is inclined, as shown in Fig. 3, and the plane of movement of the knife-edge intersects the block in a line coincident with the said axis. Hence said bed or block may be adjusted about the axis of the trunnions without disturbing its relation to the knife, this being for the purpose of scarfingtheheelsatdilferentangles. Ablock 30 of Babbitt metal is set in the face of the block for the knife to strike against and is locked against movement by a steel strip 3l, against which bear set-screws 32 32, passed into the block from the upper edge thereof.

'lhe block is adjustable and may be held in any desired position bythe devices shown in Fig. 4, taken in connection with Fig. 2.

Rigidly secured on the projecting end of one of the trunnions 25 by means of a set-screw 34 is a sector-shaped plate or gage 33, having a curved slot 35. A bolt projecting outward from the standard 2 extends through the said slot, and on the end of the bolt is a nut 36 and a washer for securing said sector-shaped plate or gage rigidly against movement. The outer edge of the said plate is provided with a graduated scale, as shown, and rigidly secured to the standard is a small clip 37, having a pointer or index 38, with which any one of the graduations on the scale of the gage may be brought to register. The positionof the gage with relation to the pointer determines the angle of the scarfed edge of the heel, as will be readily understood.

The angle of the cutter-block or bed is such at all times that its operative face is downward, and hence the heelblank must be slipped under its upwardly-projecting end to bring it in to operative relation with the knife, and for the purpose of preventing the fingers of the operator from getting into the path of the knife I employacombined guide and guard 39, as shown in Fig. 3. Said guide or guard consists of a thin plate of metal having a relatively-thick bar or portion 40 at its end, to which are riveted screw-pins 4l, passing through the block 24, as shown in Fig. 5. Compression-springs 42 are inserted between the guide and the block to hold them apart, although they may be drawn together by nuts 43, screwed on the upper ends of the setscrews. By adjusting the nuts 43 43 the guide may be moved toward or from the block to accommodate heels of dicrent thicknesses. The guide is of course out of the path of the knife, and it projects forwardly some little distance beyond the edge of the knife when it is in its forward or inoperative position, as shown in Fig. 3.

A stop consisting of a plate 44 is placed in a groove in the face of the block and is adjustably secured thereto by a screw 45, passing through the slot 46 therein. The upper or operative edge of the stop is beveled and projects over the Babbitt metal 30, as shown, to limit the movement of the heel-blank when the latter is being inserted in place.

For the purpose ot' assisting the power devices in returning the knife-carriage to its starting position and throwing the arms 18 and connecting-rod 17 out of the practically dead -center position to which they have moved when carrying the knife toits operative position I employ a compressionspring 46, which is arranged between the bracket 47, secured to the carriage, and a cross-bar 48, extending between the standards 1 and 2. The spring is coiled around a rod 49, which is secured in the cross-bar 48 by a screw 50, and which projects loosely through the bracket 47.

The stop-motion devices for imparting a single rotation to the crank-shaft are shown in Figs. 6 to 8, inclusive, and consist of the following devices:

Rigidly secured to the pulley 10, which I have previously described as being mounted loosely in the crank-shaft 8, isa ringl orinternally-toothed ratchet, as shown in Fig. 7, and rigidly secured upon the shaft is a disk or wheel 52, having a hub 53, which projects into the ring 5l, as shown in Fig. 8. This disk is cutaway upon its outer face to receive a dog 54, secured upon a shaft 55, which projects through the disk and is formed on its inner end with a pawl 56, which lies inside of the ring 5l. The dog 54 is adapted to be heldin dotted position iu Fig. 6 by a spring 57, (shown in dotted lines in said last-mentioned ligure,) and when it is in this position it holds the pawl in the full-line position shown in Fig. 7, at which time it is out of engagement with the ratchet-teeth in the ring 5l. The disk is adapted to rotate in the direction of the arrow in said figure, so that the shoe 58 on the end of a lever 59 may be brought to engage it, as shown, said lever being fulcrumed on a stud 60, project-ing from the standard l. A stop 6l limits the upward movement of the lever caused by the tension of a spring 62, which connects the short end of the lever with a pin 63 on the base of the standard l. iy drawingdown the longer end of said lever the shoe 58 is disengaged from the dog 54, and the spring 57 immediately throws the pawl 56 into engagement with the teeth of the rotating in- IOO IIO

ternally-toothed ratchet 51, whereupon the crank-shaft begins to rotate. When the lever has risen under the pull of the spring 62, the shoe 58 will engage the dog 54 as soon as the disk has made one complete rotation and throw the pawl out of engagement with the ratchet. To draw the lever downward, I employ a second lever 64, fulcrumed on a stud 65, projecting outward from the standard 1, and held normally raised by a spring 66, connected to its end and to the end of an arm 67, projecting rearwardly from one of the bearings 7, as shown in Fig. 2. This lever 64 is connected bya link with the foot-treadle. On the said lever is fulcrumed a latch member 68, whose hooked end is adapted to engage a shoulder on a catch member 69, secured to the lever 59, said latch member being held normally in engagement with the catch member by a spring 70. The said latch member is provided with a tail or end 71, which when the lever 64 is drawn downward engages a stud 72 in its path, which throws the hooked end out of engagement with the catch member and permits the lever 69 to rise. When the pressure of the foot upon the treadle is removed and the lever 64 rises under the tension of the spring 62, the latch 68 is drawn into engagement with the catch by the spring 70. Besides operating the latch the stud 72 also limits the downward movement of the lever 64.

In operating the machine the footis placed upon the treadle and a heel-blank is held in a downwardly-inclined position in the hands and is forced between the guide 40 and the under face of the cutter-block until the lower edge of the blank engages ,the end of the stop 44. Then the treadle is depressed to connect the pulleyr 10 to the shaft 8 in the manner just described, whereupon said shaft will be caused to make one rotation and slide the knife-carriage rearward to bring the said knife into engagement with the heel. The travel of the knife is at an angle to the plane of the heel-blank, so that the knife cuts off the surplus stock evenly and leaves a clean surface. After the knife-carriage has been returned to its normal position the scarfed heel is withdrawn and another is inserted in its place.

By the use of this machine I am enabled to scarf many thousands of heels in the course of a day without danger of the operators tingers being cut or injured by the knife.

Where the machine shown in Figs. 1 to 8 is employed for scarfin g heels, the latiter when they are nished present the appearance shown in Fig. 13. In many cases it is desirable, however, to concave the scarfed edge, as shown in Fig. 14, and to that end I construct the machine as shown in Figs. 9, 10, and 11. I preserve the slide 12, operated by the link 17; but instead of mounting the knife upon the slide I mount it upon a pivoted carrier 74. In this event the carrier is formed with trunnions 75, which are journaled in brackets 76, secured to the inner side of the standards 1 and 2, below the trunnions 25 for the cutter-block 24. The carrier 74 is provided with arms 77, (see Fig. 11,) which are connected by links 7S with lugs 79, depending from the slide l2. By this arrangement the movement of the slide causes the oscillation of the knife-carrier,the parts being so arranged that the cutting edges of the knife will at the extreme of movement of the carrier bear against the Babbitt filling in the cutterblock. I am enabled to obtain the same results, so far as the concave edge of the heel is concerned, by employing a rectilinearlyreciprocating knife, such as shown in Fig. 3, and swinging the cutter-block about its axis simultaneously with the movement of the knife. To accomplish this, it is merely necessary to connect the gage 33 with an arm 34, journaled on the trunnion 25, and to connect the end of that arm by an eccentric-rod 8O with an eccentric 81 on the main shaft 23, as shown in Fig. 12. Each time that the knife is moved the cutter-block is swung about its axis and the knife is caused to gage out the edge of the heel-blank to concave it.

Having thus explained the nature of the invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it maybe made'or all of the modes of its use, I declare that what I claim is 1. lA heel-scaring machine comprisinga substantially horizontally reciprocating knife, a cutter-block which is adapted to receive the heel-blank and against the face of which the knife is `adapted to operate, said block being inclined with its face underneath, and means mounted on said block for holding the heelblank against the under face thereof.

2. Aheel-scaring machine comprisinga substantially horizontally reciprocating knife, a cutter-block which is adapted to receive the heel-blank and against the face of which the knife is adapted to operate, said block being inclined with its face underneath, and means IOO IIO

mounted on said block for holding the heelblank against the under face thereof, said means having a portion projecting forwardly above the knife to act as a guard.

3.A A heel-scarlng machine comprising a knife, a cutter-block to receive the heel-blank and resist the thrust of the knife, and a combined knife-guard and heel-guide connected to said cutter-block. i

4. A heel-scarfing machine comprising a knife, a cutter-block for the knife to cut against, means for holding said block at an inclination to the horizontal with its operative face downward, means for moving said knife in a substantiallyhorizontal plane, means carried by said block for holding a heelblank yieldingly against the said under face of the said block, and :L gage carried by lche crank-shaft, :L slide, means connecting said I under faoeof said lblock foi` positioning the slide with said shaft, and an oseillatolyknifeheel-blank thereon. carrier connected with said slide.

5. A heei-scarfing machine, Comprising n In testimony whereof Ihzwe affxedimysg- 5 crank-shaft, a knife-cai'i'ier, aiook-slmfbhnvnature in presence of two witnesses.

ing divelging arms, and rods connecting said SAMUEL J. BR'ISSETTE. :mns with said knife-carrier and said Cmnk- \Vitnesses: shaftiespectively. GEO. A. EMEN,

-G. A heel-scmnfv machine com nisinff a C. F. BROWN. Q l D

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