US2971485A

US2971485A - Sewing machine

Info

Publication number: US2971485A
Application number: US696694A
Authority: US
Inventors: Sidney J Hamlett
Original assignee: White Sewing Machine Corp
Current assignee: White Sewing Machine Corp
Priority date: 1957-11-15
Filing date: 1957-11-15
Publication date: 1961-02-14
Anticipated expiration: 1978-02-14

Description

Feb. 14, 1961 s. J. HAMLETT 7 85 SEWING MACHINE Filed NOV. 15, 1957 INVENTOR. S/a/vEY J HAMLE'TT A 7' TORIVEYS III- United States Patent SEWING MACHINE Filed Nov. 15, 1957, Ser. No. 696,694 1 Claim. (Cl. 112-258) This invention relates to a sewing machine and more particularly to means for converting a portable sewing machine from a flat bed type machine for performing sewing operations on flat work to an arm type sewing machine for performing darning and other operations on tubular work such as sleeves, stockings and the like.

An object of the invention is to provide improved and simple means for converting. a flat bed type portable sewing machine to an arm type machine for performing sewing operations on tubular work pieces.

.A more specific object is to provide simple and easily used means for converting the portable sewing machine disclosed and claimed in the application of Richard H. Arbib, Serial No. 697,630, filed November 20, 1957, now Patent No. 2,958,304, granted November 1, 1960, from a fiat bed type machine for performing sewing operations on fiat work pieces to an arm bed type sewing machine for performing sewing operations upon tubular work pieces.

Further and additional objects and advantages not herein specifically referred to will become apparent hereinafter during the detailed description of an embodiment of the invention which is to follow and which embodiment is illustrated in the accompanying drawing forming part of this specification and wherein:

Fig. 1 is a perspective elevational view of a portable sewing machine which has been converted from a flat bed type machine to a raised arm type machine by means embodying the invention, a tubular work piece being indicated in sewing position by dash and dot lines.

Fig. 2 is a detached elevational view of the pedestal of the present invention, while Fig. 3 is a fragmentary sectional view showing the pedestal of the present invention attached to the underside of the base of the sewing machine illustrated in Fig. 1.

Although the invention may be utilized in various constructions of portable sewing machines it will be described herein as employed with the portable sewing machine disclosed in said Arbib application Serial No. 697,630, since it has particular utility in connection with such machine.

The portable sewing machine disclosed in said Arbib application Serial No. 697,630 comprises a base 10, the upper surface of which provides a work bed 11. The sewing machine also includes the gooseneck head indicated generally at 12. I

As disclosed in said Arbib application Ser. No. 697,630 front and rear side panels and an end panel can be removably connected to the base so that in their lowered position they provide additional work table area to the work bed 11 while in their upper position said panels enclose the sewing machine head 12 and provide a neat appearing protected portable sewing machine.

Although the side and end panels might be hingedly connected to the base 10 by various means, in the said Arbib application they are shown and described as connected thereto by hinge members which can be inserted into and removed from receiving slots 13 and 14, further description of which is unnecessary in the present application.

In Fig. 1 the portable sewing machine is illustrated as having had the side and end panels removed therefrom and with the pedestal of the present invention connected thereto so as to support the base 10 in a raised position enabling the tubular work piece 15 to be telescoped upon the' base 10 at the sewing end of the base.

The present invention contemplates forming the bottom wall 16 of the base 10 with an upwardly and inwardly extending boss 17 and with a polygonal recess 18, see Fig. 3. The boss 17 is provided with a threaded bore 19 centralized with respect to the recess 18.

The pedestal embodying the present invention comprises a flat central portion 20 from one end of which extends a pair of divergent leg portions 21. A second pair of divergent leg portions 22 extends from the opposite end of the central portion 20 of the pedestal. The legs of the divergent pair of legs 21 are substantially longer than the legs of the'divergent pair of legs 22 for a reason later to bepointed out. p

The central portion 20 of the pedestal mounts on its upper side a supporting block 23 which may be integral with the portion 20 or may be separate therefrom and welded or otherwise suitably secured thereto. The block 23 is illustrated as of cylindrical configuration but it will be understood that the block might have a different configuration.

The block 23 on its upper end and centrally thereof mounts a polygonal element 24 corresponding in shape to the polygonal recess 18 and of a size to interfit said recess. The polygonal element 24 may be integral with the block 23 or it may be secured thereto by suitable means as by welding. The central portion 20, the block 23 and the element 24 are provided with aligned bores through which can be passed an attaching bolt 25 with the head 26 thereof located in a counterbore formed in the underside of the central portion 20 so the head will be flush with said underside. The said aligned bores will align with the threaded bore 19 in the boss 17 when the pedestal is connected to the bottom wall 16 of the base 10.

The pedestal is attached to the base 10 of the portable sewing machine in the following manner: After the front and rear side panels and the end panel of the portable sewing machine disclosed in said Arbib application Ser. No. 697,630 have been removed the operator can tilt the machine on its side and position the polygonal element 24 of the pedestal in the recess 18 of the bottom wall 16 of the base 10. Then the attaching bolt can be passed through the portion 20, the block 23 and element 24 and screwed into the threaded bore 19 of the boss 17 of the bottom wall 16 of the base until the outer end of the block 23 firmly engages the bottom wall 16 and the pedestal is tightly connected to the base and the head 26 of the bolt 25 is in the counterbore in the central portion 20 of the pedestal and is flush with the bottom surface of the latter. The engagement of the polygonal element 24 in the polygonal recess 18 prevents turning of the pedestal relative to the base during the insertion of the bolt 25 and also during use of the machine with the pedestal attached thereto. Also the engagement of the element 24 in the recess 18 enables the pedestal to be correctly positioned relative to the base 10. The pedestal is connected to the underside of the base on the longitudinal center line of the latter and adjacent to the vertical plane of the left-hand side of the vertical arm of the gooseneck of the machine head 12 as viewed in Fig. l and with the longer divergent legs 21 extending toward the left beneath the base and terminating approximately at the free left-hand end of the base as viewed in Fig. 1. The shorter legs 22 extend toward the right as viewed in Fig. 1 and terminate approximately at the right-hand end of the base. The pedestal,

telescoping tubular work pieces over the base 10.

The present invention enables the sewing machinetobe rapidly and easily converted from a flat bedtype machine toan arm type; machine and thus the portable machine serves the purposes of a dual machine.

Although a preferred-form of the invention has been illustrated and described herein it' will be understood that the invention is susceptible of various modifications and adaptations withinthe scope of'the appended claim. Having thus described my invention, what I claim is: In a sewing machine assembly, a sewing machine including a base having an upper work surface and a bottom wall beneath the work surface and generally parallel to the work surface, said bottom wall having a threaded bore and a polygonal recess aligned with said bore and coaxial therewith, and a pedestal detachably secured to said base beneath said bottom wall, said pedestal including a body portion having an upper surface and opposing sides and a bore therethrough, supporting means extending outwardly from said opposing sides of said body portion, a spacer block portion fixedly carried by said upper surface of the body portion and ex:

tending upwardly therefrom, said block portion engaging said bottom wall of said base and having a bore therethrough aligned with the said bore in said body portion and a polygonal extension on the upper surface thereof complementary to and interfitting said polygonal recess in said bottom wall of said base and having the bore in said block portion extending therethrough, and a threaded attaching member extending through said bores on said body and block portions and said extensions and screwed into said threaded bore in said bottom wall.

References Cited in the. file' of. this patent UNITED STATES PATENTS 1,371,154 Ferguson Mar. 8, 1921 1,776,109 Dina Sept. 16, 1930 1,802,279 Schmitt 7 Apr. 21, 1931 1,875,177 Osann et a1. Aug. 30, 1932 1,917,756 Eames July 11, 1933 1,948,193 Thompson Feb. 20, 1934 2,197,599 Wilson Apr. 16, 1940' 2,398,697. Colegrove Apr. 16, 1946, 2,424,872 Zonis July 29, 1947 2,623,484 Zeier Dec. 30, 1952 FOREIGN PATENTS 896,150 Germany Nov. 9, 1953