US2398931A - Table board supported sewing machine - Google Patents

Description

. April 23, 1946. F. GEGAUF TABLE BOARDSUPPORTED SEWING MACHINE Filed Sept.- 10, 1945 Eye 750A Patented Apr. 23, 1946 UNHTED STAZT Fritz Gegaufs This invention relatesto table board supported sewing machines.

In constructing sewing machines-which durin use must be placed on a table and may thus be termed table board supported sewing machines the full duration of use with simple appropriate means, according to this invention, in the base of the machine at least one angular fastening means is arranged so as to be displaceable and rotatable relative to a guide by means of a shank, said fastening means being completely collapsible into the interior of the base during disuse by virtue of the arrangement of a recess and can be pulled out of the base, when the machine is used, and turned relative to the base for the purpose of being moved into a position appropriate for overlying the table board for securing the machine in position on said table.

Due to the fact that the fastening means finds room in the correspondingly recessed base of the machine, the fastening device on being restored is altogether disguised so as not to be disturbing in any way, when restored.

An embodiment of the invention is illustrated, by way of example only, in the accompanying drawing, in which Fig. 1 shows an elevation of a sewing machine mounted on a table according to the invention;

Fig. 2 is a corresponding face view partly in section on a larger scale; and

Figs. 3 and 4 show the fastening device to be restored in the base of the machine in a horizon tal and a vertical section respectively.

The numeral I designates the rectangular base of the readily portable sewing machine having an unobstructed arm 2 including the feeder and the looper; 3 denotes the overhung arm accommodating the needle bar 4 and the presser foot 5. The base I is recessed in part at the bottom so that occasionally edge ribs and intermediary ribs are left. At two solid marginal portions on one longitudinal edge of the base I a horizontal. bore 6 is provided at some distance from each of the two narrow edges so as to extend parallel thereto,

E P ENr TABLE BOARD SUPPORTED SEWING. Y

Fritz Gegaufls teckborn, Switzerland, assignor'to Sohne Steckborn, Switzerland 7 Application September 10,- Serial No. 501,887: y In Switzerland September 12,1942

4 Claims. ((1248-25) f 3 j cranked portions;

" Aktiengesellsohafti i j' which bores serve ashousings andguidesi for the shank I of a fastening member8 ,havingseveral The shank 1 of 'eachfastem'ng memberisprovided with-a longitudinal bore beginningatthe free shank end and, accommodating atension spring Q'W-hifih is connected atone of its endswith theshank .1 by meansof a cross-pin l and at the other with a pin. .fixed to the base I. P'Ihe tension spring 9 tBIIdS-iOPlllllthG fastening-member into the base I. The fastening member 8 carries on its terminal arm extending parallel to the shank I a clamping screw I2. A collar 1' on the shank I prevents the shank from being excessively pulled outwardly inthe bore 6 and the machine from creeping in the course of the sewing operation.

Each of the two fastening members 8 finds room, when unused, for the end portion thereof extending laterally away from the shank I in a recess I3 provided in the base I and being open, that is, accessible from the underside of the base I as well as from the corresponding longitudinal edge of the latter (Fig. 3). In Fig. l the two fastening members 8 are shown in chain-dotted lines in position of disuse (Fig. 3). For putting the individual fastening member 8 into use the latter is grasped by hand from the upper side of the base I and pulled out of the base to the required extent against the influence of the spring 9 for being brought into a position adapting it to overlie the table board. For the same purpose the fastening member is further turned about the shaft 1 then serving as axis of rotation for said member, so that its part projecting laterally from the shank I is moved into vertical position as shown in Figs. 1 and 2. In Fig. 1 the two direc tions of rotation entering into the question for the manipulation of the fastening member 8 are indicated by arrows.

The fastening devices 8 are then pushed into a position so as to engage under the table board neither in thickness of the base nor in any other dimensions of the sewing machine as will be readily seen. The number of fastening members to be provided for the base of the sewing machine can be varied, under certain circumstances a single fastening member may sufiice.

I claim:

1. In attachment means for table supported sewing machines, a machine base, a laterally opening guide bore in said base, a bracket having a hook-shaped portion and a shank extending into said guide bore, the hook-shaped portion being adapted to extend over and under a table. edge, said shank being turnable in said, recess H aboutits axis, said shank being hollow and open at its inner end, a spring secured to a central. r portion of the base and connected to the shank at a point within the shank removed from its a inner end to urge the bracket toward the base,

and a recess extending laterally of the outer end 7 of the guide bore for receiving the hook-shaped portion of the bracket when turned laterally when not in use. 7 7 a 2. Fastening means for securing atable model sewing machine and the like to the edge of a supporting table comprising, a machine base plate provided with a recess in its'underside and having a guide bore extending laterally from the recess and opening through a side surface of the base, said base also having a recess extending laterally iromthe outer end of the bore, a

yoke having a pair of arms, one of which arms extends into said guide bore and is slidable therein inwardly and outwardly and is also rotatable therein, and a tension spring in the recess in the underside of the base and secured to said base and to said one arm of the yoke so as to tend to draw said arm inwardly in the guide bore, the other arm of said yoke having means for ,clamping against the underside of a table edge,

said other arm and the clamping means being accommodated in the recess extending laterally for the outer end of the guide bore when the yoke pring. 15

is turned sidewise and is drawn inwardly by said 3.- Fastening means according to claim 2, and in which the one arm of the yoke is provided with a longitudinal bore extending from its end within the recess in the machine base, and in

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