US296869A - stevens - Google Patents

Description

(HUMMEL) E E 2 Smeets-smet 1.l

W. Y. OBER 8v E M. STEVENS.

SEAM PINISHING MACHINE.

No. 296,869'. PatentedApr. 15, 1884.

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W. Y. BER 88 -F..M. STEVENS.v

9 SRAM PINISHING MACHINE.

No. 298,889. Patented Apr. 15, 1884.

N. PETERS. Pwwumnmphu. wnhingwn. l1 C.

3o the right in Fig. 1.

Unirse Sfrnrns PATENT @lirica W'ILLIAM Y. BER, OF LYNN, AND FRANK M. STEVENS, OF BGSTON, MASS.

SEANl-FINISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 296,869, dated April 15, 1884. application inea July e, less. (No model.)

'To rtl/3 wtfmt it may concern.:

Be it known that we, WILLIAM Y. OBER, of Lynn, in the county of Essex, and FRANK M. STEVENS, of Boston, in the county of Suffolk,

and State ol' Massachusetts, have invented a '1o appended claims. l

This invention relates to a niachine that is adapted to rubbing down and smoothing seams in leather and analogous materials; and the present invention is an improvement upon the.

I5 machine described and shown in said Obers application No. 95,531, filed May 19, 1883, for Letters Patent of the United States for ImproveinentsinSeanrlinishingllachines,and is shown in the presentdrawings in connection 2o with a machine mainly like that shown in the drawings filed in said Obers application; and

the present invention consists in the construe'- tion and combination of diver s devices embodied therein, as hereinafter more particularly and fully set forth and claimed.

In the accompanying drawings, Figure 1 is a side elevation of the machine with our i1nproveniente thereto applied. Fig. 2 is a front elevation ofthe machine, taken as viewed from Fig. 3 is a detached perspective view, showing the upper portion of the supportingwheel, the pressure-rolls resting thereon, and the means by which said rolls are niounted in position. Fig. 4 is a detached side elevation of the rubber, taken as viewed in Fig. 2. Fig. 5 is an edge elevation of the rubber, taken as viewed from the left in Figs. 2, et. Fig. 6 is an inverted perspective view ofthe rubber. Fig. 7 is an inverted plan view 4o of the rubber.

In said views, c represents the frame or body ofthe machine, in which isjournaled the lower arbor, b, on which are mounted the supportingwheel c at the front and the tangent-wheel d at i5* the rear. An upper arbonf, carries fast and loose pulleys g, through'which it is rotated by a belt, and also carries an endless screw,re, which engages wheel d, and thereby, through arbor b, rotates supportingwheel c. A head,

5o la, is carried by arin i, which is formed upon or rigidly secured to sleeve b', which is mounted on arbor b, as shown in Fig. l. Said sleeve is slightly rotated on the arbor by means of an eccentric secured on shaft f and acting in strap h, and through rod i and arm j, which latter is formed upon and entends from said sleeve b', and is pivotally connected with said rod c', whereby said head la is vibrated or reciprocated a limited distance along the periphery oiwheel c, as indicated by a dotted line in Fig. 2, which represents the axis of head 7l'- when in its most advanced position to the left, all said devices and their movements being fully shown and described in Obers said former application, and which are referred to here merely for the purpose of preliminary illustration. In head cis seated the rubber s, which bears by a yielding spring-pressure upon the periphery of wheel c, or the seam when interposed between the wheel and rubber, asis fully described and shown in Ob'ers said application. The lower end or operative face of said rubber we form with two rounded ridges, no, with a depression, w, between them, and we form a central groove, fr, in ridge u, as shown in Figs. 5, (i, 7, and so as to be transverse to the line of said ridge, and in the direction of the planeur" wheel c when coacting therewith. A curved arm, a', is pivoted in body a upon bolt t, and is controlled by spring d', which is attached to said arm and to adjustable plate c', as shown in Fig. l. Said arni at its upper and outer end is formed with a head, z, in which is seated and secured by a set-screw, as shown,

the stem o', by the forks pp of which are pivotally supported the small pressure-rolls u n, which, as shown in Figs. l, 2, 3, are arranged to bear upon the oblique faces of the periphery of wheel c, their axes being arranged slightly to the left, Fig. 2, ofthe extreme forward movement of rubber s, in order that the seemed' leather,.when carried forward by said wheel in the direction indicated by the arrow thereon, shall be engaged by said rolls before rubber s begins to act upon it. Said supportingwheel, we forni with a central groove, which we iill with leather or other slightly-yielding niaterial, (shown at nu) which will insure the desired frictional contact with thesearned leather that is carried forward by the wheel when the machine is in use.

The practical operation of our machine is as follows: The seamed leather is placed upon Wheel c, at the left of wheels a, as viewed in Fig. 2, with the line of the seam coincident with band m in wheel c, and is moved forward and entered between said wheel and rolls, by which it is automatically carried past rubber s, the seam moving in groove x therein, thus serving to hold it centrally upon the wheel, and as the seam is carried forward, the ridge fu, formed across the face of the rubber, flattens and smooths it to the level of the adjacent surface. Vhen the seamed leather encounters the rolls a, as just described, it is, by their pressure caused by spring d', curved transversely to the line of the seam, and so as to conform to the transverse configuration of the periphery of wheel c, thereby facilitating the "ly-yielding material, and also having the periperal face of the wheel, on` either s/ide of said band, formed oblique to the plane ofthe wheel, whereby the cross-section of the face constitutes. an unbroken curved line, substantially as specied.

2. The supporting-wheel c, formed withV a central recess and inserted band, m, and with its periphery upon each side of said band oblique toits plane7 substantially as specified.

3. In combination with supporting-wheel c and rubber 5,the small rolls n n, arranged to allow the seam to pass between them and to co-operate with said wheel and rubber7 substantially as speciiied.

4. The combination, with the supportingwheel c, formed with a central bearing, m, and an oblique peripheral face on each side thereof, of rolls n n, arranged with their axes and peripheries coincident with the oblique faces of 45 said wheel, substantially as specified.

5. The rubber s, formed with a groove, x, extending partially but not wholly across its face, substantially as specified.

6. The rubber s, formed with the facial ridges 5o a o, and the depression w between the same, substantially as specified.

7. The rubber s, formed with the facial ridge u, having the slot m therein, and the ridge o, extending across the face of the rubber, sub- 55 stantially as specified.

WILLIAM Y. OBER.

FRANK M. STEVENS.

Witnesses:

EUGENE HUMPHREY, T. W. PORTER.

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