US2255382A - Sewing machine gauge - Google Patents

Description

P N. GIANCOLA I 2,255,382

SEWING MACHINE GAUGE Original Filed June 2, 1939 I INVENTOR 6 .56 V

A ORNEY Patented Sept. 9, 1941 SEWING MACHINE GAUGE Nicholas Giancola, Guttenberg, N. J.

Original application June 2, 1939, Serial No.

276,992. Divided and this application September 29, 1939, Serial No. 297,024

4. Claims.

The invention relates to sewing machine gauges for guiding stitches at predetermined variable intervals from a given line.

This application is a division of my copending application Serial No. 276,992, filed June 2, 1939. In the copending application there is disclosed and claimed a presser foot provided with a plurality of gauge elements which may be selectively brought into play for guiding stitches at relatively short intervals from the margin of a piece of goods or other given line. The present application covers an auxiliary adjustable gauge (shown but not claimed in the copending application) for guiding stitches at intervals wider than those provided for by the aforementioned multiple gauges.

The object of the present invention is to provide an auxiliary adjustable gauge of improved qualities with respect to adjustability and efliciency when in use.

The invention is illustrated in the accompanying drawing in association with the presser foot covered by my above-mentioned copending application, but it will be obvious that the auxiliary gauge which is the subject of the present application is adapted for use with any type of presser foot.

Referring to the drawing generally Fig. 1 is a front elevation.

Fig. 2 is a side elevation seen from the right of Fig. 1.

Fig, 3 is a plan view.

Fig. 4 is a side elevation seen from the left of Fig. 1.

Fig. 5 is a fragmentary section on the line 55 of Fig. 2 and on a larger scale.

Fig. 6 is a section on line 6-6 of Fig, 5 and on the same scale.

Fig. '7 is a fragmentary front elevation on an enlarged scale, showing roller 60 in raised position.

The presser foot shown is a split double foot composed of a left foot [0 and right foot I2, foot 10 having a slot ll (Fig. 2) by means of which the whole device may be attached in conventional manner to the presser rod (not shown) of a sewing machine. Foot I2 is provided with a plurality of gauge bars [4 which may be selectively advanced or retracted by manipulating head 21; and the relative elevation of the two feet may be adjusted by manipulating screwhead 45; all as described in the copending application. Further description of these parts in the present application is deemed unnecessary.

For gauging wider hems or lines of stitches spaced farther apart than those provided for by the gauge bars M, an auxiliary adjustable gauge 59 is provided. This gauge is carried by a crooked bar 56, 51, 56, whose long horizontal section 56 is slidably and rotatably journaled in a sleeve 52 which in turn is journaled in upper extension 55 of foot I2. 52 has a boss 53 and on the other side of extension 55 a cam collar 64 is affixed. to the sleeve by a set screw. Boss 53 and collar 64 prevent axial movement of sleeve 52 but permit it to rotate. Collar 64 has two flats and 650. against one or the other of which bears a spring 66 (Fig. 4). When gauge 59 is in its upper or neutral position (as shown dotted in Fig. 1), spring 66 presses against flat 65a; when in the lower or operative position, it presses against flat 65. A locking pin 63 is seated in a bore extending into boss 53 and alongside of bar 56. Pin 63 may be rotated by means of handle 63a. In the plane of bar 56 lock pin 63 is recessed at 63b to reduce the diameter of the pin through that part. When the pin is turned into a position which brings the cut-back portion alongside of bar 56, the bar can be freely shifted in sleeve 52 to the right or left and can also be rotated in the sleeve. When pin 53 is turned into another position it tightly wedges against the bar and looks it against movement relatively to sleeve 52.

A roller 66 is pivotally secured to an arm 6| which is pivotally attached to a boss 6la on gauge shoe 59. Spring 62 is attached to part 58 of the gauge bar and bears against a peripherally-flattened member such as nut 61 non-rotatably secured to the end of arm 6|. When roller 66 is in the lower or operative position (Figs. 1-4) the roller and its arm 6| lie on opposite sides of shoe 59 and are pressed downwardly by spring 62. For a purpose to be mentioned later, the outer face of boss 6m, abutting nut 61, is tilted so that roller 66 is thrown to the right when it is raised to the position shown in Fig. 7. In order to dispose the roller vertically when in operative position (shown dotted in Fig. 7) the inner and outer ends of arm 6] are angularly offset to one another, as by the intermediate twist shown in Fig. 7.

To set the extension gauge for use (assuming it to be in the upper or neutral position, with pin 63 in locking position and spring 66 bearing against flat 65a) the gauge is first swung downwardly into approximate work-guiding position. This movement rotates cam collar 64 and transfers spring 66 from flat 65a to flat 65. Lock pin 63 is then turned to the release position, permit- On its inner end, sleeve ting the gauge to be shifted to the right or left to establish the desired sewing margin. While the lock is released the elevation of the gauge is accurately adjusted and this should be done after the material to be sewed is in place, so that the thickness of the material may be taken into account. Lock pin 63 is then turned to the locking position and the device is ready to operate. If the gauge is resting upon the material to be sewed, as is the case in some sewing operations, any unevennesses of the material which raise the gauge will rotate collar 64 causing flat 65 to rock on spring 66 and produce a tension which tends to return the gauge to normal position. Roller 50 will press the material adjacent to the shoe and prevent the formation of wrinkles which might impair the uniformity of the stitch. If desired, however, as When the gauge is set close to the foot, roller BB can be thrown up out of operative position, in which case spring 6| will seat itself upon another face of nut 6'! and hold the roller in raised position; and owing to the angular disposition of arm 6 I the roller will swing away from the foot and needle, eliminating the possibility of interference, as, for example, with head 27 (Fig. 1). When the extension gauge is not in use it may be thrown up into neutral position, where it will be held by spring 66 bearing n flat 65a.

I claim:

1. In combination, a presser foot, a work-guide mounted on said foot, and a yieldable presser roll mounted on said work-guide.

2. In combination, a presser foot, a Work-guide mounted on said foot, a rock arm pivotally mounted on said work-guide, a presser roll carried by said rock arm, and means yieldably opposing rocking of said arm.

3. The combination set forth in claim 2, in which said yieldable means comprises a squared member. axially mounted to rock with said arm and'a spring bearing against said squared member.

4. In combination, a presser foot having a transverse bearing, a gauge bar shiftably and rotatably journalled in said bearing, said bearing having a bore tangential to said bar, and a rotatable pin of non-circular cross-section disposed in said bore in wedgeable relation to said bar.

NICHOLAS GIANCOLA.

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