US1129404A - Presser device for sewing-machines. - Google Patents

Description

R. S. KELSO.

PRBSSER DEVICE FOR SEWING MACHINES.

APPLICATION FILED JUNE 30,1911.

Patented Feb. 23, 1915.

WIT/M8858 l/I/VEAITOR his ATTORNEY THE NORRIS PETERS 60.. FHOrc-LITHO WASHINGTON. D. c.

llNlTElU PATENT- @FFTCE.

RALPH S. KELSO, 0F CLEVELAND, OHIO, ASSIGNOR TO THE STANDARD SEWING MACHINE COMPANY, 013 CLEVELAND, OHIO, A CORPORATION OF OHIO.

DRESSER DEVICE FOR. SEWING-IMACHINES.

Application filed June 30, 1911.

To all whom it may concern Be it known that I, RALPH S. KnLso, citizen of the United States, and resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Presser Devices for Sewing-Machines, of which the following is a specification.

This invention relates to a presser-device for sewing machines.

The principal object of the invention is to provide a presser device so mounted with respect to the needle, and to the line of stitching formed by the machine, as to be capable of movement for the purpose of enabling it to cooperate properly with the other parts, whatever may be the character of the work in the machine, and yet not interfere with the threading of the needle or any other operation for the performance of which it is necessary that the operator shall have unobstructed access to all parts adjacent to the work near the stitching point. In the present case this movement of the presser involves two main operations or functions, one of which relates to movement of the presser for the purpose of adjusting it with respect to the line of stitching and the path of the needle, and the other of which relates to movement of the presser of such a nature as to permit the presser to be shifted from its operative position, close to the line of stitching and to the needle, to an inoperative position where it will not obstruct access by the operator to the needle and other adjacent parts; Considering this movement of the presser with respect to the first of said functions, viz., its adjustment,

the presser of the present application is preferably so mounted on a presser-bar as to be adjustable both crosswise of the line of stitching, for the purpose of bringing it closer to, or moving it to a point farther away from, that line and lengthwise of the line of stitching for the purpose of permitting it especially when in the form of a roller-presser, which is the type preferably used-to engage the work at any one of the various points between a point considerably in advance of the path of movement of the needle and a point considerably in the rear of that path. Considering said presser with respect to the other of said main functionsto wit, the movement of it into and out of action-the presser is preferably mounted to Specification of Letters Patent.

Patented Feb. 23, 1915..

Serial No. 636,139.

swing about an axis located at one side of the presser-bar, and preferably to the left of and behind said. bar, for the purpose of enabling the presser itself to swing in a path eccentric to the axes of both the needle-bar and the presser-bar, and thus clear all the parts adjacent to the needle when said presser is swung out of action. The extent and direction of this movement are such as to give the operator unobstructed access to the needle and adjacent parts whenever the presser is swung to its inoperative position.

Other features of the invention not hereinbefore referred to will be hereinafter de scribed and claimed and are illustrated in the accompanying drawings, in which- Figure 1 is an elevation of the front side of a portion of the head of a sewing machine, illustrating the present invention applied thereto, with a roller-presser in its working position adjacent to the needle, only so much of the sewing machine being shown as is necessary to illustrate the invention. Fig.2 is a similar view showing the presser elevated away from the work and also swung to its inoperative position, where it is at a considerable distance from the needle. Fig. 8 is an elevation of the front end of the same with the parts in the position shown in Fig. 1, and Fig. 4 is an elevation of the rear side of the same with theparts in the same positions as shown in Fig. 1.

Similar characters designate like parts in all the figures of the drawings.

While a presser device embodying my invention is applicable to different specific kinds of sewing machines, it is especially well adapted for use in connection with edge-trimming sewing machines of the type disclosed in a companion application Serial No. 636,138, filed June 30, 1911, in which there is illustrated and described an edgetrimming sewing machine especially adapted and intended for trimming off the edge of the undermost of several plies of material that have been or are being stitched together. For a more detailed description of the mechanism of such an edge-trimming machine reference is hereby made to said companion application.

2 designates the lower portion of a sewing machine head, which is or may be of well-known construction, and in which may work a needle-bar 3 and a presser-bar 4, also of well-known construction. The needle-bar 3 carries the usual eye-pointed needle 5 for stitching the work as vit is fed over the throat-plate of the machine. The needle-bar with its needle and the presser-bar with the presser carried thereby are or may be combined with the other parts of the sewing machine and operated in a well-known manner.

The presser-bar carries at its lower end a presser device, preferably of the rollerpresser type, which in the construction at present used is mounted and operated in the manner illustrated. It embodies means for adjusting or shifting the operative position of the presser both crosswise and lengthwise of the line of stitching, and also means for swinging the presser into and out of its operative position, in addition to means, as usual, for raising and lowering the presserbar and the presser. In the specific construction illustrated the presser-bar has secured to its lower end a support 6, on which is mounted a cross-piece 7, upon which is pivoted an arm 8, carrying the presserproper, which is here a roller-presser 9. The cross-piece 7 is adjustably mounted on the support 6 for movement in a horizontal path crosswise of the line of stitching, it having a horizontal slot 10, in this case, for permitting such movement; a locking screw being shown at 11 for securing it in the desired adjusted position crosswise of such line of stitching. The arm 8 as illustrated is made in two parts in order to permit adjustment of its length, and corresponding adjustment of the position of the presser itself, in the other direction hereinbefore referred to, via, lengthwise of the line of stitching. The adjustable portion of this arm is indicated at 8. A longitudinal slot is shown at 12 in the main part 8 of this arm forreceiving the shank of a locking screw 13, by means of which the two parts 8 and 8 may be held in the desired adjusted relation to each other in a manner similar to that just described with respect to the locking screw 11. By means of these two adjustments the presser-roller 9, which is shown as pivoted at the lower end of the adjustable part 8 ofthe arm, may be shifted to any one of various positions crosswise of the line of stitching and lengthwise thereof, either in front of, or in line with, or behind the needle, and a very accurate and fine adjustment of its position with respect to the line of stitching and the path of movement of the needle may be obtained.

The arm 88, in addition to being adjustable in the manner just described, is illustrated as mounted to swing as a whole about a vertical axis which is here located in a hinge member 14. When the presser is in its operative position, shown in Figs. 1, 3 and 4, it is held in place between the upper and lower walls of a guideway, such as 16, formed at one end of the cross-piece 7 and arranged at right angles thereto as shown. The guideway formed by these walls serves to hold the arm 8 firmly and prevent any thrust of the mechanism, during the operation of the machine, from being transmitted to the hinge l4; straining of said hinge and undue displacement of the presser being thereby prevented. \Vith the arm 8-8 and supported presser-roller 9 in the positions shown in these views they may be securely locked in place in some suitable manner, as, for example, by means 01 a locking device or spring 17 secured to the cross-piece 7, which spring may be released from engagement with the arm 8 by depressing its free end. The arm is locked in place by merely swinging it to its operative position, the spring yielding to permit it to pass and then locking it in place as shown.

In a device such as just described, the roller-presser 9 may engage the work at a point immediately adjacent to the path of the needle, and the adjustment of such a diagonally mounted roller-presser may be readily effected in either or both of two horizontal paths perpendicular to each other; while at the same time said roller-presser may be thrown out of action, when in any of its adjusted positions, by a movement about an axis in a path eccentric to the axes of both the needle-bar and the presser-bar. Thus all necessary adjustments for different kinds of work are provided for, and when not in use the presser may be thrown to a position where it will not be in the way of any other part which the operator may find it necessary to manipulate or adjust and will not interfere with any other operation.

What I claim is 1. In a sewing machine, the combination with a presser bar and a needle bar, of a presser, and a horizontal presser-carrying arm normally disposed in the same direction as the line of stitching, said arm being adjustable in length and pivotally carried by the presser bar to turn about a vertical axis to swing said presser from an operative position adjacent the needle to an inoperative position distant from the needle.

2. In a sewing machine, the combination with a presser bar and a needle bar, of a cross piece secured to the presser bar and disposed transversely of the line of stitching and having a guideway extending in the direction of the line of stitching, a presser, and a horizontal presser-carrying arm normally disposed in the same direction as the line of stitching, said arm being adjustable in length and adapted to fit in said guideway and pivotally carried by said cross piece to turn about a vertical axis to swing said presser from an operative position adjacent the needle to an inoperative position distant from the needle.

3. In a sewing machine, the combination 1,129,404 jgj;

with a presser bar and a needle bar, of a cross piece secured to the presser bar and disposed transversely of the line of stitching and having a guideway extending in the direction of the line of stitching, a presser, a horizontal presser-carrying arm normally disposed in the same direction as the line of stitching, said arm being adjustable in length and adapted to fit in said guideway and pivotally carried by said cross piece to turn about a vertical axis to swing said presser from an operative position adjacent the needle to an inoperative position distant from the needle, and means for locking said arm in place in said guideway with the presser in its operative position.

4. In a sewing machine, the combination with apresser bar and a needle bar, of a cross piece secured to the presser bar and disposed transversely of the line of stitching and having a guideway extending in the direction of the line of stitching, a presser, a horizontal presser-carrying arm normally disposed in the same direction as the line of stitching, said arm being adjustable in length and adapted to fit in said guideway and pivotally carried by said cross piece to turn about a vertical axis to swing said presser from an operative position adjacent the needle to an inoperative position distant from the needle, and a locking spring for locking said arm in place in said guideway with the presser in its operative position.

5. In a sewing machine, the combination with a presser-bar and a needle-bar, of a cross-piece secured to the presser-bar and disposed transversely of the line of stitching and having a guideway extending in the direction of the line of stitching, means to permit said cross-piece to be adjusted crosswise of the line of stitching, a presser, and an arm adjustable in length pivoted to said cross-piece and fitting said guideway and carrying said presser and mounted to swing said presser from an operative position adj acent to said needle to an inoperative position distant from said needle.

6. In a sewing machine, the combination with a presser-bar and a needle-bar, of a cross-piece secured to the presser-bar and disposed transversely of the line of stitching, means to permit said cross-piece to be adjusted crosswise of the line of stitching, a presser, and an arm adjustable in length pivoted to said cross-piece and carrying said presser, mounted to swing said presser from an operative position adjacent to the needle to an inoperative position distant from said needle.

7. In a sewing machine, the combination with a presser-bar and a needle-bar, of a cross-piece secured to the presser-bar and disposed transversely of the line of stitching, means to permit said cross-piece to be adjusted crosswise of the line of stitching, a presser, and an arm adjustable in length and longitudinally of the line of stitching pivoted to said cross-piece and carrying said presser and mounted to turn about a vertical axis to move said presser from an operative position adjacent to the needle to an inoperative position distant from said needle.

8. In a sewing machine, the combination with a presser bar and a needle bar, of a cross piece secured to the presser bar and disposed transversely of the line of stitching and having a guideway extending in the direction of the line of stitching, a presser, and a horizontal presser-carrying arm normally disposed in the same direction as the line of stitching, said arm being adjustable in length, the adjustable portion thereof being adapted to fit in said guideway and the arm being pivotallv. carried by said cross piece to turn about a vertical axis to swing said presser from an operative position adjacent the needle to an inoperative position distant from the needle.

Signed at Cleveland, in the county of Guyahoga, and State of Ohio, this 17th day of June, A. D. 1911.

RALPH S. KELSO.

Witnesses:

S. E. Foos, F. S. MCELI-IERNE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

Images