US2090447A - Sewing machine attachment - Google Patents

Description

s. F. IOGHA SEWING MACHINE ATTACHMENT Aug. 1 7, 1937.

2 Sheets-Sheet l T Filed March 10, 1956 Attorneys Aug. 17, 1937. s. F. IOGHA SEWING. MACHINE ATTACHMENT Filed March 10, 1936 2 Sheets-Sheet 2 Patented Aug. 17, 1937 dlaidd Claims.

This invention is an attachment adapted to be readily applied to sewing machines, particularly sewing machines of the type used in repairing and in the making of shoes, and where by the use of said attachment the sewing machine may be used for darning purposes.

Among the ob'ects of the invention is to provide an attachment of this character which may be readily and easily applied to the machine, and which attachment itself can be cheaply and economically constructed and will serve admirably the purposes for which it is designed.

The invention together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure l is an elevational view illustrating the application of the attachment to the sewing machine.

Figure 2 is a longitudinal sectional view through the attachment.

Figure 3 is a plan view of the attachment.

Figure 4 is a fragmentary elevational view of the end portion of the body member of the attachment adapted to be connected with the presser foot rod.

Figure 5 is an elevational view of a slightly modified form of the invention.

Figure 6 is a longitudinal sectional View through the second form of the invention.

Figure '7 is a top plan View of the second form of the invention.

Figure 8 is an elevational view of still another form of the invention.

Figure 9 is a longitudinal sectional view through the third form of the invention.

Figure 10 is a top plan view of the third form of the invention.

In accordance with the present invention the attachment is for the purpose of simplifying the operation of darm'ng on a patching machine; the invention comprehending the provision of means whereby a quick change over from stitching to darning or vice versa on sewing machines may be accomplished.

In accordance with the present invention it will be noted, that in each form thereof the attachment comprises a substantially cylindrical solid body member 5 provided at its respective upper and lower ends with non-circular portions 6 and '1 respectively for the application thereto of a tool or the like for applying or removing the body member from the rod 8 of a conventional sewing machine, and which rod carries the usual presser foot 9.

In Figure 1 there is shown fragmentarily the head portion of a sewing machine and in this figure in addition to the rod 8 and presser foot 9 there is also clearly shown the vertically movable needle bar it to which is detachably secured in the usual manner and as indicated at H the needle l2.

In the form of the invention shown in Figures 1 to 4 inclusive the member 5 in the lower end thereof is provided with a threaded socket I3 into which is threaded one end of a coupling pin i l.

Also in this form of the invention the presser foot rod 3 is provided with a threaded socket in the upper end thereof into which is threaded a second end of the pin it as indicated generally at E5 in Figure l.

Also the member 5 in the upper end thereof is provided with a threaded socket it into which is screwed an end of the threaded shank of a head equipped screw .i'i.

Also in this form of the invention the shank of the screw ii is threaded through a suitable opening provided in a tapered arm 53 that extends laterally from the screw in the path of the needle bar iii.

In actual practice it will be apparent that during the operation of the machine for sewing in the usual manner the arm or plate i8 is swung to a. position at an angle to that shown in the drawings so as to be out of the path of the needle bar ill. Thus the machine will work in the usual manner.

As is well known, when darning, it is essential that both the needle and the presser foot be in a clear position so that the operator can move the material in any direction. Therefore, and as will be manifest, in accordance with the present invention the presser foot will move along with the needle bar on the upward motion of the latter as the latter comes out of the work. Thus when the darning arm of plate ii; is threaded downwardly on the shank of the screw ll, and when said arm is in its lowermost position, which is the position shown in Figure l, the arm or plate !8 will have the free end thereof disposed in the path of the needle bar it. Thus it will be seen that when using the machine for darning, the needle bar ill on each upward movement thereof will come into contact with the plate or arm l8 with the result that the pr sser foot bar 8 will be caused to move upwardly with the needle bar Hi. Thus both the needle l2 and the presser foot 9 will be in a clear position permitting the operator to move the material in any dire ction necessary to accomplish the darning of the objectbeing worked upon.

In the form of the'invention shown in Figures to 7 inclusive screw ll and plate l8 may be dispensed with, and in this second form of invention the body member indicated by the reference numeral Ed has in the upper end thereof a vertical socket l9, and at opposite sides of the socket [9 the upper end of the body member 5a is provided with alined openings 20. A headed pinor arm 2| has a sliding fit in'the alined openings 2i! and the pin 21 isretained in either of "the two positions suggested in Figure 5, friction-j f ally, through the medium ofa spring22 arranged, 15

Within the inner end of the socket l9 and having an end bearing against the pin or arm 2i.

Inthis form of the invention the arm 2| is V 'the equivalent of the plate'or arm 18 described in the first form of the invention and when in the full line position shown in the drawings the free end of the pin 2| will be in a position to be through the medium of a threaded pin 23 one end of which is screwed into the lower end of the body member 5a and the other end of which is adapted to be threaded into the upper end of. the presser foot bar 8 as is thought to be apparent. i

- In the form of the invention shown'in Figures 7 8 to the body member, indicated by the ref 'erence numeral 51) is provided in the lower end thereof with a socket 2d the Walls of which are smooth and this socket is adapted to receive the Q upper end of the presser foot bar 8a in a manner clearly shown, 7 a

Threadedly engaged with opposite sides of the lower end of the body member 5b are securing screws 25 which are adapted to'be screwed in-- wardly to binding engagement with the end of the presser foot bar 8a received within the socket 24 as shown in Figure 9 for positively securing the member 51) to the presser foot bar.

From the foregoing, it will be seen that I have provided an attachment for a patching machine whereby such a machine may be readily changed over from a patching or darning machine to a stitching machine or vice versa.

- It will also be further appreciated that the device forming the subject matter of this invention when in actual use on the machine will not only cause the presserioot to move with the needle bar but will also prevent the presser foot from dropping when the tension thereon is removed. Also the attachment, or the use thereof,

will eliminate the necessity for threading the needle for. darning as well as for-adjusting the tension on the presser foot to allow sufficient clearance for darning.

Having thus described the, invention, what is claimedas newis: v

1. The combination with the needle and presser bars of a sewing machine, of a member mounted on the upper end of the presser bar, an arm mounted on said member for sliding movement transversely thereof, into and out of position within the path of the needle bar, and yielding means engaged with said arm for frictionally retaining the same in either of two positions.

2. The combination with the needle and presser bars of a sewing machine, of a member arranged on the upper'end of thepresserbar, means detachably connecting one end of said member with the upper end of the presser bar, an arm extending laterally from said member and a screw threadedly engaged with said arm and the upper end of said member attaching the arm to said member, said arm being rotatable about the screw as an axis and axially movable relative to said screw into and out of the path of the needle bar.

3. The combination with the needle and pressor bars of a sewing machine, of a member adapted to be mounted on the upper end of thepresser bar, means detachably connecting said member with the upper end of said presser bar, said member at the upper end thereof being transversely bored, a rod having a sliding fit within said bore and adapted to be projected laterally 4. A sewing machine attachment comprising a body provided at one end for attachment to the upper end of the presser bar of a sewing machine and for attachment to'and removal from said end of the presser bar in a direction axial to the presser bar, and means detachably connected with the free end of said body and shiftable relative thereto for movement into and out of the path of the usual needle bar of'a sewingmachine as and for the purpose specified.

' 5. A sewing machine attachment comprising a member provided atone end 'for axial and detachable association with the upper end of the presser bar of a sewing machine and means associated with the free end of the member and movable relative thereto and in a plane at right angles to the plane of said member for position into and out of the path of the needle bar of the sewing machine, as and for the purpose specified. 1

SAM F. IOGHA.

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