US89275A - Improvement in sewing-machine for sewing leather - Google Patents

Description

4 Sheets-Sheet 1. E. E. BEAN.

Sewing Machine for Sewing Leather.

No. 89,275. Patented April 27, I869.

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4 Sheets-Sheet 2 E. E. BEAN.

Sewing Machine for Sewing Leather.

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I 4 Sheets-Shet 3. E. E. BEAN.

Sewing Machine for Sewing Leather.

Patented April 27,. 1869.

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v 4 Sheets-Sheet 4.' E. E. BEAN. Sewing Machine for Sewing Leather.

No, 89,275. Patented April 27,- 1869.

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UNITED STATES PATENT OEEroE.

EDWIN E. BEAN, OF BOSTON, ASSIGNOR TO DAVID WHITTEMORE, OF NORTH BRIDGEWATEB, MASSACHUSETTS.

IMPROVEMENT IN SEWING-MACHINE FOR SEWING LEATHER.

Specification forming part of Letters Patent No. 89,275, dated April 27, 1869.

To all persons to whom these presents may come: pin, 19, extended from its front face or side. Be it known that I, EDWIN E. BEAN, of This pin is the joint-pin of a connection-rod, Boston, in the county of Suffolk and State of g, which extends down from it, and, at or near Massachusetts, have invented a new and useits lower part, is pivoted to the awl-carrier I, ful Improvement in Machinery for Sewing which is placed over the needle-earner, and Leather or other Material; and I do hereby with it is supported so as to be capable of be declare the same to be fully described in the ing moved vertically within the frame. following specification and represented in the The eccentric e is so applied to the drivingaccompanying drawings, of whichshaft as to be capable of being revolved on it,

Figure 1 is a top view, Figs. 2 and 3 oppoand of afterward being fixed in position on it site side elevations, Fig. 4 a front-end view, by means of a set-screw, r. This enables a and Fig. 5 a rear-end elevation, of my imperson to so adjust the eccentric with respect proved sewing-machine. Fig.6isa longitudito the rest of the mechanism by which the nal section, and Fig. 7 a transverse section, of needle and awl-carriers are moved vertically it, taken through the needle and awl. as to insure the proper simultaneous upward The first part of the machine to be explained movement of the needle and awl, and the sub is the mechanism for imparting to the needle sequent descent of the needle before that of and the awl their vertical movements. the awl, in order that there may be space In the drawings, Adenotes the frame of the enough between the needle and awl for the machine; B, the needle, and O the awl. The material to be sewed to be either introduced driving-shaft is represented at D as provided into or removed from the machine. with a series of driving-pulleys, a, and a fly- From the above it Will be seen that for efwheel, 1). This shaft is supported in bearings fecting the vertical movements of the needle 0 d, on what is termed the goose-neck of the and awl I avoid the use of cams, as generally frame. employed, and depend mainly on cranks or On the shaft, at the rear end of the frame, arms, an adjustable eccentric, and certain is an eccentric, e, which is embraced by a conshafts, as specified. This enables me to greatly nector, f, whose lower end or part is jointed simplify the mechanism for so operating the to an arm, 9, projecting from a horizontal shaft, needle and awl carriers, and to attain a very h, arranged within the frame, in manner as desirable and smooth or noiseless operative represented in the drawings. mechanism, comparatively speaking.

The joint-pin of the connection of the arm In the drawings, the feeder is shown at K and connector may be adjustable lengthwise as arranged to slide laterally and horizontally of the arm, such being by means as representwithin the upper part of the bed-post F. In ed, and for the purpose of varying the distance to a notch, s, of this feeder the upper end or of movement of the needle-carrier. part of an arm, t, extends, such arm being From the front end of the shaft it another projected upward from a horizontal shaft, a, arm, i, projects at a right angle with the shaft, arranged in the frame in the manner as repand has a joint-pin, k, going through it. This resented.

joint-pin extends from a slide, 1, which is dis- Fig. 10 is another transverse section of the posed within an inclined groove, m, formed in machine, it being taken just in front of the the head a of an arm, E. connection-rod of the rear arm, o, of the shaft Fig. 8 is a top view, and Fig. 9 an innera. The said arm o extends up from the shaft side view, of the arms E i, the slider l, and the a, and is pivoted to one end of the said connectjoint-pin k. ing-rod, (shown at 10,) the other end of such The said arm E extends into the bed-post F rod being pivoted to an arm, as, which projects of the frame A, and has the needle-carrier G downward from a rocker-shaft, y, arranged on extended through it, and fastened to it by a one side of the goose-neck, in manner as shown clamp-screw, 0. (See Figs. 4 and 6.) Furtherin the drawings. There is a slot, 2, made more, there is fixed on the front part of the lengthwise in the said arm or. This slot redriving-shaft D a wheel, H, having a crankceives a slide-pin, a, which slides within the slot, and is provided with a clamp screw and nut, b, to enable it to be fixed to the arm.

Fig. 11 is a section of the said pin, the arm at, and the lever 0, into a groove, d of which the pin a extends. The said lever 0, arranged with reference to the arm a: in manner as represented, has its fulcrum d atits foot.

A pin projects from the upper part of the lever into the cam-groove e of the side of a wheel, f, fixed on the driving-shaft.

By the operations of the cam-wheel f, the lever c, the pin a, the arm 00, the connection rod w, the arm 1:, the shaft to, and the arm 1?, the feeder will be moved back and forth the extent of its movement, and, consequently, the length of the stitch depending on the position of the pin a. Thus, by setting the said pin higher in the slot of the arm 00, we can cause the feeder, when operated, to have a greater degree of motion. By lowering the pin we produce the contrary effect, or alesser degree of movement of the feeder.

From the front end of the rocker-shaft y another arm projects downward, it being marked g. At its lower part the arm g is jointed to a pendulous head or bar, L, which is supported by, and so as to be capable of swinging laterally on, a journal, h, extended from the front end of the goose-neck z" of the frame A.

The awl-carrier I andthe presser-foot carrier M are supported by and within the pendulous head or bar L, the presser-foot being shown at N.

Now, as the arm y will move with and be moved by the shaft y, it will be perceived, from the description given of the mechanism for operating the feeder, that while such feeder may be in movement there will be a corresponding lateral movement of both the awl and the presser-foot. Thus the awl, instead of being out of the material to be sewed while it is being fed along the length of a stitch, remains in the said material. The instant the awl descends upon the material the feeder commences to advance, and the awl descends into and through the material, and advances laterally with it and the feeder. The awl, nevertheless, performs no function of feeding the material along, which, it will be observed, is effected by a separate mechanism.

The presser-foot carrier M is raised with the presser-foot at the proper time by the action of the awl-carrier, it being afterward depressed by means of a spring, 0.

An arm, I, projects from the presser-foot carrier, and is adapted to it so as to slide vertically on it. This arm also embraces the awlcarrier, and rests on a shoulder, k, thereof. A male screw, 1, projects up from the presserfoot carrier M, and receives two nuts, m n, the upper of which is a check-nut to the other of such nuts. By means of the screw and the lower nut the presser-foot may be adjusted to the material to be sewed, whatever may be its thickness.

WVhile the awl-carrier may be in movement upward its shoulder will be carried against the arm P, and will raise it and cause it to raise upward the presser-foot carrier.

The next part of the machine to be described is the mechanism by which the awl may be adjusted with reference to the needle. This mechanism forms the connection of the arm 9 with the pendulous head or bar L. It consists of a crank-pin, 0', which revolves freely within the said arm. This crank-pin has amale screw, 1), extended through and hinged to the bar L. Two screw-nuts, q r, screwed on the screw 10 and on opposite sides of the pin 0', enable a person to effect, with the screw, the adjustment as above mentioned.

The thread-carrier is shown at It, and the cast-off at S, they being operated in the usual manner, their operative mechanism constituting no part of my present invention.

In making my invention I have avoided the employmentof cams as ordinarily used for effecting the operations of the needle and awl, and sought to attain the same principally by means of shafts and crankarms extended therefrom, as they cause them to work better and with less noise and wear of mechanism, and enable the machine to be made cheaper, comparatively speaking, than when cams are employed. I have also avoided the necessity of lifting the awl out of the material to be sewed before feeding such material along the length of a stitch.

To operate the needle and awl by rockershafts and crank mainly, I have been obliged to employ an adjustable eccentric, as set forth. By having it adjustable I can vary its position on its shaft, so as to cause the needle and awl to move at such variable speeds as maybe desirable for the work to be done.

"What I claim, therefore, as my invention is as follows:

1. I claim the combination for effecting the movements of the awl and needle, the same consisting of the rotary driving-shaft D, the adjustable eccentric 6, its connector f, the rocker-shaft h, its arms g t, and the cranked wheel H and connecting-rod q, the whole bein g applied together and to the awl and needle carriers I G and frame, and arranged substantially in manner and so as to operate as as specified.

2. I also claim, in combination with mechanism for feeding the material to be sewed, and mechanism for imparting to the awl and needle their vertical movements, the mechanism, substantially as described, by which the awl, while piercing the material, is moved laterally with such material and feeding mechanism without of itself in any way affecting the feeding of the material.

3. I also claim the combination for effecting the movements of the feeder and the presser, the same consisting of the grooved cam f, (applied to the driving-shaft,) the lever 0', applied to the said cam, as described, the rocker-shaft y and its arms 00 g, the pendulous bar or head L, the connecting-rod w, and the shaft to and its arms t c, the whole being arranged with and applied to the presser and feeder and the frame of the machine, substantially as set forth.

4. And, in combination with the said mechanism for eflecting the movements of the feeder and the presser-foot, I claim the slot 2 (in the arm 00,) and the adjustable pin a, and its clampscrew applied to the lever c and the arm as, their purpose being to regulate the length of stitch, as set forth.

5. I also claim the combination of the adjusting-screw p and nuts q 1", or the equivalent thereof, With the pendulous bar L, the crank-pin 0, and the arm g of the mechanism for operating the awl and the feeder, as set forth, the purpose of the said parts 0, p, q, and 4 being to enable the awl to be adjusted with reference to the needle.

EDWIN E. BEAN.

WVitnesses:

R. H. EDDY, F. P. HALE, Jr.

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