US386251A

US386251A - Detachable shade for sewing-machines

Info

Publication number: US386251A
Authority: US
Publication date: 1888-07-17
Anticipated expiration: 1905-07-17

Description

(No Model.)

W. H. LANFERSIEK.

DETAGHABLE SHADE FOR SEWING MACHINES.

No. 386,251. Patented July 17, 1888.

UNITED STATES PATENT OFFICE.

WILLIAM H. LANFERSIEK, OF CINCINNATI, OHIO.

DETACHABLE SHADE FOR SEWING-MACHINES.-

SPECIFICATION forming part of Letters Patent No. 386,251, dated July 17, 1888.

(No model.)

erators eyes from the rays of a lamp or otherv artificial light. In its preferred form said shade consists of a sheet of tin grooved vertically at its center to admit apair of prongs projecting from a spring-clip,wl1ich latter is engaged over the sewing-machine arm. The prongs have a frictional hold within the vertical groove, in order that the shade may be conveniently shifted either up or down, as occasion may require. Furthermore, the sides or back of the groove may be corrugated or notched to afford a positive hold of the clip-prongs when the shade is applied to large machines driven by power, as hereinafter more fully described.

In the annexed drawings, Figure 1 is a side elevation ofasewing machine having my shade applied thereto. Fig. 2 is a perspective view of the shade detached from the machine. Fig.

3 is an enlarged perspective view ofthespring;

clip detached from the shade. Fig. 4 is an enlarged vertical section through the arm and notched groove of the shade, the spring-clip being seen engaged with one of said notches.

A represents the shade, which may be of any size, shape, and material, although it usually consists of a sheet of tin about six inches wide by eight inches high. This shade is grooved centrally and vertically, as at B, to admit the prongs C C of a spring-clip, D, which clip can be readily engaged over the arm E of a sewing-machine, as seen in Figs. 1 and 4. Clip C C D is usually made ofa single piece ofspringwire bent in the manner seen in Fig. 3, the Wire being bound together by atie,F,and the prongs C C having a tendency to diverge or spread apart at their upperor free ends. Gis a lamp or other artificial light placed behind the shade or screen. To use this shade the prongs C C are first compressed or drawn together, so as to enable them to be inserted within the groove B, and then said prongs are permitted to expand and bear against the opposite sides of said groove. Clip D is now engaged over the arm E, and the shade is readily raised or lowered to bring it to the proper position for protecting the operators eyes from the light of the lamp G. This adj nstment is easily effected,

becausethere is no positive engagement of the prongs with the groove, and yet the frictional hold of said prongs is sut'ficient to prevent accidental shifting of the shade; but when the shade is to be applied to a machine driven by power the expedient shown in Fig. 4 may be resorted to. Here the groove B has a rack, I), wherewith theupper ends of the prongs are engaged. Thisarrangementpreventstheshade sliding down, no matter how violently the machine may vibrate.

I claim as my invention 1. The shade A, having a vertical groove, B, in combination with the detachable springclip D, having laterally-spreading prongs C C, for the purpose described.

2. The shade A, having a notched vertical groove,Bb,in combination with the detachable spring-clip D, having prongs CC, for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

\VILLIAM H. LANFERSIEK.

IVitnesses:

JAMES H. LAYMAN, WILLIAM C. LAHMANN.