US934292A

US934292A - Machine for perforating leather.

Info

Publication number: US934292A
Authority: US
Inventors: William A Dawes
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-11-30
Filing date: 1908-11-30
Publication date: 1909-09-14
Anticipated expiration: 1926-09-14

Description

W. A. DAWES.

MACHINE EOE EEEEOEATING LEATHER.

2 SHEETS-SHEET 1.

Patented Sept. 14, 1909.

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APPLICATION FIEBD NOV. 30, 1908v wllllh m lmllll M li. i l

'W-. A. DAWBS. MACHINE FORPERFORATING LEATHER.

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WILLIAM A. DAWES, F IJA GROSSE, WISCONSIN.

MACHINE FOR PERFOtRATINGr LEATHER.

Specification of Letters Patent.

Patented Sept. let, 1909.

Application filed. November 30, 1908. Serial No. 465,197.

'To all whom tt may concern.'

Be it known that I, IVILLIAM A. DAwEs, a citizen of the United States, residing at the city of La Crosse, in the county of La Crosse and State of l/Visconsin, have invented certain new and useful Improvements in Machines for Perforating Leather, of which the following is a specification.

This invention relates to a machine for preparing leather or similar material to receive nails, pegs or similar' fastening devices.

The machine forming the subject matter of the present application is illustrated as being adapted to prepa-re the soles of shoes or the like, which soles are to receive nails which are subsequently driven into place.

One of the objects of the invention is to provide means whereby a row of holes or perforations may be mechanically made in the leather and the material to be punctured may be fed along on the work plate by a step `by step feed so as to successively space openings a predetermined distance apart.

Another object of the invention is to provide means whereby the angle of inclination of the openings may be determined by a suitable adjusting device.

Other objects and advantages of the invent-ion will be apparent from the following description, it being understood that changes in form, proportion and minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

In the drawings, Figure 1 is a View partly in elevation and partly in section through the arm and base of the machine embodying my invention. Fig. 2 is an end view of the arm showing the puncturing mechanism in elevation, the face plate at the end of the arm being removed. Fig. 3 is an edge view of the awl member and bar and coperating mechanism therefor. Fig. l is an elevational view of a lit lever for successively advancing the material to be worked. Fig. 5 is a plan view of said lever. Fig. 6 is a plan view of the cams for operating the presser foot and awl bar. Fig. 7 is an edge view of said cams, and Fig. 8 shows a modified form of mounting the work plate.

Referring now tothe drawings by numerals of reference, 1 designates the base on which is supported an arm 2 of appropriate construction. The arm 2 is provided with anism (not shown).

bearings 3 and 4 in which is a shaft 5. On one end of the shaft 5 is the pulley 6 through which the shaft 5 may be driven from a belt or other suitable driving mech- The shaft 5 is also provided with the usual fly wheel 7. On

the end of the shaft 5, opposite to that on vby a link 11. One end of the link 11 is connected to the cam 9 at a point eccentric to its aXis as at 12. The other end of said link has a loose connection with the bar 10 as at 13. To the upper portion of the bar 10 is a connection 141- for the awl bar 15 provided with an awl 16 at its lower end. The bar 10 is held against any sidewise movement by its guides 17 and 18, but the bar 15 is permitted to have a lateral movement, the lower end of said bar being swung from the connection 14 and it may be actuated by a lever 19, best shown in Figs. fl and 5. The lever 19 is provided with an arm 20 adapted to be engaged by the cam 9 so as to impart movement to the arm 21 from right to left, Fig. 3, and inasmuch as the arm 21 will contact with an edge of the bar 15, said bar will be swung on its pivot 14 which constitutes the connection between 1 and the bar 10. The lever 19 is fastened to the end of the arm by a suitable fastening device designated by the numeral 22.

Adjacent to the bars 10 and 11 and guided in bearings 23 and 24e in the end of the arm 2 is a vertical reciprocatory presser bar 25, having at its lower end a presser foot 2G of approved construction. The presser bar 25 is provided with a shoulder 27 against which a spring 28 is adapted to bear said spring 28, in this instance being illustrated as a leaf spring anchored at one end 29 to the arm 2 and having its free end 30 resting upon said shoulder' 27 so as to eXert force in a downward direction on said bar 25. The bar 25 is connected at 31 to a link 32, the opposite end of said bar 32 being pivotally connected to the arm 2 by a suitable fastening device 33. The link 32 is in line with the cam 8 and out of line with the cam 9. 34 designates a spring fixed at 35 to the arm 2 and provided with the free end 36 which bears against the edge of the bar 15 opposite to that against which the arm 21 bears. Thus the spring 34 and thearm. 21 will exert opposing forces to each other.

As heretofore stated one of the purposes of the invention is to provide means whereby the opening made by the awl may be inclined, that is the opening may assume an angle between the horizontal and. vertical, and the means for accomplishing this is best shown in Figs. 1 and 2.

The base plate 1 is provided at its front portion with the beveled. or incl-ined face 35, above which is work plate 36. VTheV work plate 36 is pivotally connected to the basel at 37. The base 1 is provided with al vertical opening 33 through which projects anturn button 39, having a spiralI groove 4.0 1n its periphery. The spiral groove'isengaged by a projecting finger 41 fixed to the base 1 and` a guard ringy 42 is connected to the base 1v below finger 41, and said guardy ring 42 may be fastened thereto by

suitable devices

43 and 44, best shown in Fig. 2.

The turn button 39 has a loose rotative. connection with the work plate 36, said turnv 3 plate being connected to saidV plate36 by the l.upon the base 1 so that said plate 36 will:

fastening device 45. rlhus it will be apparent that by turning the buttony 39 to theright (F ig. 1'), the rearwardly extending portion 36a of said plate 36 will rest fiat be caused to assume a horizontal positionv at right angles to the awl 16, therefore, the

reciprocation of the bar 15 willA be effectivein causing the awl 16 to puncture the maf 4terial vertically. If however, the turn button 39 is turned from right to left (Fig. l), the forward portion of the plate 36 will be caused to approach the beveled face 35 of the base 1, and dependent upon how closely the .forward portion of said plate 36lapproaches awl to make the openings at any angle be tween two extremities. In Fig. 8 is-shown a shifting movement of the awl bar' takesactive peripheral' portion of the cam 8 will be effective in lifting the free end: of the link 32 in advance of any actuation of the lever 19, therefore, the presser foot 26 will be lifted in advance of any sidewise movement of the awl bar 1'5 and, as soon as-the place to shift the material to be operated upon along the work. plate, the actuatingi.. portion of the cam 8 will have passed, and

there will be a dwellin the cam for a determined periodl ofits rotative movement which l will be ineffective in actuating the link 32 during this time. The presser foot 26 will Abe resting upon the work to hold it clamped upon the work plate, and it will be thus held' until the awl bar hasv receded to withdraw `the awl and then advance to make a new hole. The cams Sland: 9fmay be constructed.,

fromy a. single block or they. may comprise two` disks suitably' fastenedz toVA each other.

Having thus described my invention what v I claim as new and desire to .secure by Let'- ters Patent is 1. In a machine of the character described, the combination with aI shaft anda reciproeating bar driven from` said shaft; of an awl-bar pivoted to and swingingly carried by said reciprocating bar, and means operable through the shaft for swinging said awl-bar.

2. In a machine of the character described, the combination ofA a rotating shaft.;` a: reciprocating bar driven fromsaid shaft; an oscillating. awl-bar pivotally suspended by one end from said reciprocating bar, and a means operablethroughthe shaft for oscillating said awl-bar. Y i

3. In a: machine of the character described,

the combination with. anawl-bar rising and` on said member, al cam` on said. shaft; andy a rocking member actuatedf by saidzcam and adapted to swing said. awl-bar laterally.

v 5. In a machine of the character described,

the combination with a shaft; of a `reciprocatory bar;l an awl-bar pivotally swung by one endi tov saidV reciprocating bar; a cam.

mounted on said shaft and adapted to iinpart a4 reciprocatingV movement to said reciprocatory bar; means coopera-ting with said cam to impart av swinging movement to said awl-bam. a reciprocatory presser foot;

a second cam mounted on. said. shaft; andV meanscooperating with said' second cam and said presser foot to impart an intermittent Y movement to said? presser foot.

6. In a device ofethe` classdescribed, theY combination with the base plate and puncturingmechanism; of a; workplate carried by said base, and means rotatable about a vertical axisv for changing thev angle of inclination ofj said work: plate.

7. 'Ina' machine ofthe character described, the combination with a mechanism: for'pro.-

viding nail openings in leather; of a stationary base; a Work plate pivoted to said base; and means for swinging said Work plate on its pivot.

8. In a machine of the class described, the combination With a means for making nail holes and a base therefor; of a Work plate p'ivotally connected to said base, a turn button connected to said Work plate and having a spiral groove and a finger carried by said base and engaging said groove.

9. In a machine of the character described, the combination with the aWl and means for operating the awl; a stationary base below said awl, said base being provided with faces at an angle to each other; a Work plate pivotally mounted on said base; and means for adjusting said Work plate to lie flat on either of said faces.

l0. In a machine of the character described, the combination With the stationary base; of an aWl-bar mounted above said base; a base plate pivoted to said base; and a cam-movementdevice for adjusting the Work plate about its pivot.

The foregoing specification signed at La Crosse, Wis. this 5th day of November, 1908.

VILLIAM A. DAVVES.

In presence of- J. E. HIGBEE, JAMES THOMPSON.