US1211112A - Automatic presser-foot for sewing-machines. - Google Patents

Description

J. DUNNER.

AUTOMATIC PRESSER FOOT FOR SEWING MACHINES,

APPLICATION FILED DEC-l1, 1915. 1,2]. 1,1 12. Patented Jan. 2, 1917.

4 SHEETS-SHEET I.

WITNESSES "VI/Emma Julius Dunner m %MMIA J. DUNNER. AUTOMATIC PRESSER FOOT FOR SEWING MACHINES.

APPLICATION FILED DEC. 11. I915- 1l,21 1,1 1 2. Patented Jan. 2, 1917.

4 SHEETSSHEET 2- 1n: Nun-ms PETERS m. rnamuma. wunmcron n c.

J. DUNNER.

AUTOMATIC PRESSER FOOT FOR SEWING MACHINES.

Patented: J an. 2, 1917.

4 SHEETS-SHEET 3.

APPLICATION flLiD DEC. H. l9l5.

m I 1m TIIIV "illllllll umpnmu 5% INVENTOR 3 Jullus Dunner" A TTOB/VEYS J. D'UNNER.

AUTOMATIC PRESSER FOOT FOR SEWING MACHINES.

APPLICATION FILED 050.11, 1915.

1,21 1,1 1 2. Patented Jan. 2, 1917.

4 SHEETS-SHEET 4.

m IIIIIIIEIIIIII E I EEEI g IIIIIIIIIIIIIZ WITNESSES INVENTOR j.,, 4W Suhus Dunner 6 2% By W ATTORNEYS STATES PATENT @FFTQE.

JULIUS DUNNER, OF BROOKLYN, NEW YORK, ASSIGNOB 0F ONE-HALF TO SELLMAR 1V1. JACOBY, OF NEW YORK, N. Y.

AUTOMATIC PRESSER-FOOT FOR SEWING-MACHINES.

Application filed December 11, 1915.

To all whom it may concern:

Be it known that I, JULIUS DUNNER, a subject of the Czar of Russia, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and. State of New York, have invented a new and Improved Automatic Presser-Foot for Sewing- Machines, of which the following is a full, clear, and exact description.

This invention relates to sewing machines and particularly to presser feet used in machines adapted to sew sweat bands in hats, and has for an object the provision of an improved construction which will allow the hat to be quickly applied and removed.

Another object in view is to provide an improved arrangement of presser foot for sewing machines which, upon the operation of the foot of the operator may be moved out .of operative position and then out of the way so as to quickly remove a hat from the holder arranged adjacent the stitching mechanism.

A further object of the invention is to provide a hat support having spaced supports whereby the center adjacent the stitching mechanism is properly held in place but a free open space is provided adjacent the stitching mechanism for properly adjusting the hat. v

A still further object of the invention is to provide an improved arrangement of presser foot and means for actuating the same which, upon the first movement, will cause the disengagement of the presser foot and a further movement will cause the rotation of the presser foot to a position out of the way, thus allowing a quick removal of the stitched hat and the substitution of an unstitched hat.

In the accompanying drawings, Figure 1 is a rear view of a machine embodying the invention; Fig. 2 is a side view of the operating parts of the structure shown in Fig. 1, the same being shown on an enlarged scale and certain parts being broken away for better illustrating the structure; Fig. 3 is a top plan view of the structure shown in Fig. 1; Fig. 4 is a rear view of the presser foot and associated parts, the same being shown on an enlarged scale and in operative position; Fig. 5 is a view similar to Fig. 4 but disclosing the presser foot moved away from the head preparatory to being turned; Fig. 6 is a fragmentary end view of the Specification of Letters Patent.

PatentedJan. 2, 1917.

Serial No. 66,287.

operating shaft and associated parts of the presser foot mechanism; Fig; 7 1s a front view of the hat support or. bar.

Referring to the accompanying drawings by numerals, 1 indicates a basewhich may be of any desired kind and which may be connected with any suitable support, said base having arranged thereon a casing or body 2 in which the mechanism for operating the needle and associated parts is mounted. The needle and parts associated therewith together with the mechanism in casing 2 are a well known structure and will therefore need no detail description. Incidentally it may be stated that the stitching mechanism produces what is commonly known as a lock stitch and the needle is arranged to operate in a horizontal plane, as shown more particularly in Fig. 2, so that it may more readily sew the sweat band 3 of the hat 4 to what is known as the reed of the hat. The mechanism which operates the needle also operates a cam 5 which moves the pivotally mounted lever 6. Lever 6 moves arm 7 which in turn operates an intermittent clutch 8. The members 5 to 8, inclusive, have been used heretofore and a further detailed description will not'be necessary, the arrangement being shown more particularly in Fig. 2 and adapted to intermittently rotate shaft 9 which carries a beveled pinion l0 meshing with a bevel'ed gear 11. Gear 11 is rigidly connected with a tube 12 loosely mounted on shaft 13, which shaft is rigidly connected to a plate 14, plate 14 in turn being bolted or otherwise rigidly secured to frame or casing 2. The tubular member 12 is rigidly connected with the vertical feed wheel 16 and intermittently moves the same in a rotary motion as the intermittent clutch 8 rotates shaft 9 and associated parts. It will be observed that for each rotation of cam 5 feed wheel 16 and parts connecting the feed wheel with lever 6 will be operated one step, this operation taking place while the needle is withdrawn from the sweatband. The cam 5 is connected with shaft 17, which shaft is connected with and forms part of the mechanism for properly operating the needle and associated parts so that the operation of the feed wheel is in timed relation to the operation of the needle and associated mechanism.

Associated with the feed wheel 16 is a presser foot 18 arranged in a horizontal 1 0 plane and loosely mounted upon a shaft 19 carried by the arm 20. The presser foot 18 is intended to press the hat 4 and associated .bar 21 is supported adjacent the ends so that the center will be left free for a proper adjustment of the hat. It will also be observed that the center of the hat bar 21 is provided with a notch 24 merging into reoesses 25 and 26, said recesses and said notch allowing a proper movement of the needle.

without causing the breaking of the needle. From Fig. 7 it will be seen that the bar 21 may be adjusted by shifting the bolts 27 and 28 in the apertures 29 and 30 formed in the brackets 22 and 23.

Referring more particularly to Figs. 2, 4 and 5, it will be seen that the presser arm 20 is provided with a large looped portion 31 which merges into an operating shaft 32.

At the juncture of shaft 32 and the arm 20 an enlargement 33 is provided which carries a stub shaft 34 adapted to extend through an aperture 35 in an upstanding ear 36 of bracket 37 Bracket 37 is intended to be secured to the casing 2 in any suitable manner, as for instance, by screws 38. The shaft 32 is provided with a stop 39 rigidly connected therewith by any suitable means, as for instance, a set screw, so as to confine a spring 40 between the stop and the turnedup ear 36 so that the enlarged portion 33 of the arm'20 will have a tendency to move toward the turned-up ear 36 and thereby cause the stub shaft 33 to properly fit into aperture 35 for holding the arm 20 perfectly steady. The arm 20 carries the shaft 19 on which the presser foot 18 is mounted and also on which a sweatband support 41 is mounted, said sweatband support being provided with a bent-over end 42 whereby a supporting trough is provided, as shown more particularly in Fig. 2.

As shown in Fig. 3 the shaft 19 carries a plate 43 at the upper end thereof, which plate is of the usual construction associated acted on by arm 20, shaft 32 and's pring 39. 7

In addition to shaft 32 acting to pull arm 20 and presser foot 18, the same extends thr gh a frame 45 which forms part of the bracket 37 and which provides walls 46 and 47 that act as supporting members for the outer end of the shaft 32. Suitable apertures are provided in the walls 46 and 47 for accommodating the shaft so that the shaft may freely reciprocate therein and also freely rotate therein; .The extreme outer end of the shaft is bifurcated and carries an anti-friction wheel 48 which has a 5 the shaft 32 will be forced longitudinally against the action of spring 40, whereby all the parts will assume the position shown in Fig. 5. The cam 49 is bolted or otherwise rigidly secured to a lever 50 pivotally mounted on a stud shaft 51, which stud shaft is preferably secured to the casing 2, as for instance, by screws. 7

At the extreme outer end of the lever 50 a plurality of apertures 52 are provided for receiving the bolt 53 whenever desired,said bolt also passing through a bifurcated end of a pull 'rod 54, which rod is connected to rod 55 bymeans of an adjusting sleeve mem ber 56. The rod 55 is pivotally mounted on a treadle 57 whereby when the foot of the i operator presses treadle 57 downwardly lever 50 will be moved so as to raise cam 49 to the position shown in Fig. This will cause the parts to be moved until the presser foot 18 has moved to the position shown in Fig. 5. A continued downward movement of the treadle 57 and a continued upward movement of the'bifurcated end 58 of lever 50 will cause the rod 59 to be moved upwardly to such an extent that the rack 60 (Fig. 2) arranged thereon will rotate pinion '61 to such an extent as to cause a rotary movement of shaft 32, whereby the presser foot is moved to the upper dotted position shown in Fig. 1, thus causing the same to move entirely away from the hat bar 21 and feed wheel 16. The rack 60 mesheswith pin ion 61 and rotates the same whenever the'bar 59 is moved in either direction. I

The first part of the movement of lever 50 causes the movement of bar 59 as the pin 62 extends from the bar 59 through the bifurcated end 58, as shown in Fig. 1. The pinion 61 begins to move as soon as the'rack 60 is moved but has no immediate efiect on shaft 32 as the pinion is rigidly secured to a sleeve 63, which sleeve is losely mounted on the shaft 32 between the walls 46 and 47 and is provided with a camway or groove 64. A pin 65 is rigidly connected to shaft 32 and extends into the camway or groove 64. The pitch of the groove or camway 64 is proportioned to allow the pin 65 to freely move from one end of the groove to the other, while the shaft 32 is being moved longitudinally by cam 49 and the sleeve 63 is being moved by pinion 61. However, as soon as the pin 65 strikes the end of the groove a further movement of the sleeve 63 will cause a rotary movement of shaft 32 so as to move the parts from the position shown in Fig. 5 to the dotted position shown in Fig. 1. By this'construction and arrangement a single operation by the operators foot will cause the presser foot 18 to move away from the feed wheel 16 and then move in a circle so as to be positioned entirely out of the way of the needle mechanism in order that the stitched hat may be removed and a new unstitched hat substituted. As soon as the new hat is placed in position ready for stitching the operator raises his foot, whereupon the retractile spring 66 acting on the base 1 and on the lever 50 will move the rack to its lowered or inoperative position and also move the cam 49 to its lowered or inoperative position. A reverse movement of the parts as described will cause the shaft 82 to be reversed in its movement until it reaches the position shown in Fig. 5, whereupon the spring 40 will move the parts to a closed or operative position as soon as the rack 60 has finished its return movement.

It will be noted that the operating parts of the needle mechanism are designed to receive power from a pulley wheel 67 which pulley wheel receives power from any suitable source. All of the parts of the present invention are operated, however, by the foot of the operator except the feed wheel 16 and parts connected thereto. It will be observed that the parts embodying the invention may be readily applied to or removed from the stitching mechanism, whereby they may be applied to other stitching mechanism and thereby adjusted to suit any particular design of mechanism for stitching hats.

What I claim is:

1. In a machine of the character described, a stitching mechanism, a presser foot for holding work in proper position for being stitched, a rotatable shaft for supporting said presser foot, means for moving said shaft longitudinally whereby the presser foot will be moved in a straight line away from the stitching mechanism and means for rotating said shaft to a position distant from the stitching mechanism after it has been moved longiudinally. 1 l

2. In a machine of the character described, the combination with a stitching mechanism, of means for supporting a hat adjacent the stitching mechanism, a feeding adjacent the stitching mechanism, a feeding member operated in timed relationship to the stitching mechanism, a presser foot coacting with the feeding mechanism for holding the hat in proper position to be moved by the feeding mechanism, a supporting arm for holding the presser foot in position, and means for moving said presser foot away from the feeding mechanism and then rotating the same to a point distant from the stitching mechanism, said means including a power shaft, means for moving the power shaft longitudinally and means for rotating the power shaft.

4. In a machine of the character described, the combination with a stitching mechanism, of a support for holding a hat adjacent the stitching mechanism, a feed member, means operated by the stitching mechanism for causing the feed member to intermittently move the hat on the hat support, a presser foot for holding the hat against said feed member, and means for moving the presser foot to one side when the hat is being removed and a new one substituted.

5. In a machine of the character described, the combination with a stitching mechanism, of means for supporting a hat so that the sweatband thereof may be stitched in position by the stitching mechanism, means for feeding the hat intermittently, a presser foot for holding the hat in proper position while being fed forwardly as the stitching mechanism is operated, an arm for supporting said presser foot, a shaft connected with said arm, means acting on said shaft for normally holding said arm in such position that the presser foot will be pressed against said hat, means for moving said shaft against the action of said first mentioned means, and a foot operated memher for setting in motion said last mentioned means and also means for rotating said shaft, whereby the presser foot will be moved away from the hat and then rotated for part of a revolution.

6. In a machine of the character described, the combination with a stitching mechanism, of a support for a hat, means for feeding the hat along said support, a presser foot for holding the hat against the feeding member, an arm for supporting said foot, a shaft connected with said arm,

resilient means for holding said shaft in such 7. In a machine of the character described, the combination with a stitching mechanism, of means for feeding a hat past the needle of the stitching mechanism, a presser foot for holding the hat in position, a supporting arm for holding the presser foot in position, a shaft connected with the presser foot, resilient means acting on the shaft for causing the same to hold the presser foot resiliently against said hat, a cam for moving the presser foot longitudinally, and manually operative means for rotating said shaft, arm and presser foot for part of a revolution after the cam has moved the shaft longitudinally a predetermined distance. 7

8. In a machine of the character described, the combination with a stitching mechanism, of feeding means operated thereby for feeding a hat past the needle of the stitching mechanism in timed relationship'to the movement of the needle, a presser foot for bold ing the hat in proper position, an arm for supporting said presser foot, a shaft connected with said arm, and manually operated means for rotating said shaft for part of a revolution for moving the same out of the way when one hat is being substituted for another.

9. In a machine of the character described,

' the combination with a stitching mechanism,

of a feed for moving a hat intermittently past the needle of the stitching mechanism, said feed being connected with the stitching mechanism so as to operate in timed relationship to the needle, a presser foot, a supporting arm for holding the presser foot in position, a shaft extending from said arm, a pin or stud shaft also extending from said arm, a fixed support for supporting and guiding the said shaft, said fixed support having an aperture opposite said pin, means acting on said shaft for causing said pin to enter said aperture whereby said shaft and said arm are held rigidly in position, means for moving said shaft longitudinally so as to cause said pin or stud shaft to be disengaged, and manually operated means for partially rotating said shaft after said pin or stud shaft has been disengaged.

10. I11 a machine of the character deing a hat past the needle of the stitching porting said presser foot, a shaft connected with sald arm, means for preventing wobmechanism, a presser foot, an arm for supbling of said arm, a spring acting on said shaft for holding the arm in suchposition that the presser footwill operate'ag'ainst the hat being stitched, a cam for moving said shaft longitudinally against the action of said spring and thereby moving the presser foot away from the 'hat, means for rotating ber connected with the means for'rotating said shaft and said cam for causing the actuation of these members. g

11. In a machine of the character described, the combination with a stitching mechanism, of a feed for feeding a hat past the needle of the stitching 'mechanism, a

presser foot, an arm for supporting the presser foot, a shaft connected with said arm, a spring act-mg against said shaft for holding the same in a givenpositlon whereby the presser foot will be resiliently held in operative position, means for preventing wobbling of the presser foot, a cam for moving. said shaft longitudinally together with said arm and presser foot, a lever for actuating'said cam, a rack bar connected with said lever and actuated simultaneously with the cam, a pinion meshing with said rack bar so as to be rotated thereby, a sleeve rigidly connected with said pinion and operated thereby, said sleeve being journaledon saidshaft, said sleeve being formed with an arc-shaped slot or camway, a pin connected with said shaft and extending into said camway whereby for the first part of the rotary movement of the sleeve and during the longitudinal movement of the shaft said pin will move through said camway and the latter part of the rotary movement of the sleeve will cause a rotary movement of the shaft and parts connected therewith,

and means for actuating said lever.

12. In a machine of the character de-V scribed, the combination with a stitching mechanism, of a feed for feeding a hat past tatable presser foot, means for supporting said presser foot, said means including a reciprocating member, a spring for moving.

said reciprocating member in one direction, a cam for moving the reclprocatlng member said shaft, anda manually operated mem-j in the opposite direction, a rack and pinion for rotating said shaft, a lever for actuating said rack and said cam, and a treadle connected with said lever for actuating the same.

14. In a machine of the character described, the combination with a stitching mechanism, of a feed for feeding a hat past the needle of the stitching mechanism, a rotatable presser foot, means for supporting said presser foot so that the same may freely rotate, said means including a reciprocating member, a spring for resiliently holding the reciprocating member in a given position so that the presser foot will press against the hat, means for moving the presser foot against the action of said spring, a pin extending from said reciprocating member, a sleeve surrounding said reciprocating member and provided with a spiral groove accommodating said pin whereby the sleeve is allowed a partial rotation without rotating the reciprocating member, and means for rotating said sleeve to such an extent as to give the sleeve a partial rotation after the same has been moved longitudinally against the action of said spring, whereby the presser foot will be moved away from the hat and then to one side.

15. In a machine of the character de scribed, the combination with a stitching mechanism, of a feeding member for feeding a hat past the needle of the stitching mechanism, a presser foot for holding the hat in position, an arm for supporting the presser foot, a shaft connected with said arm, means for moving said shaft longitudinally so that the presser foot will be moved away from said hat, mechanism for partially rotating said shaft and parts connected therewith after the same has been moved longitudinally, and a single operating member for actuating said mechanism and the means for moving the shaft longitudinally.

16. In a machine of the character described, the combination with a stitching mechanism, of a feed member arranged adjacent the needle of the stitching mechanism, a presser foot for holding a hat adjacent the feeding member and in proper position for being stitched, a support for the presser foot, said support including a reciprocating shaft, a spring acting on said shaft for holding the samein a given position, a cam for moving said shaft longitudinally whereby the presser foot is moved in a direct line away from the feed member, a lever for actuating said cam, a rack bar connected with said lever and actuated simultaneously with the cam, a pinion meshing with said rack bar, a sleeve connected with the pinion and loosely mounted on said shaft, said sleeve having an arc-shaped groove therein of length and pitch to agree with the longitudinal movement of the shaft, a pin extending from said shaft into said groove whereby when said lever is actuated the cam will move the shaft longitudinally and the rack will move the sleeve in a rotary direction, said rotary movement being continued after the cam has ceased to move the shaft, whereby the shaft will be moved for part of a revolution, thus moving the presser foot to one side, and means for actuating said lever.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JULIUS DUNNER.

Witnesses:

CHARLES WELTMAN, A. L. KITOHEN.

copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, I). G.

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