US1016590A - Trimming mechanism for sewing-machines. - Google Patents

Description

J. P. WEIS. TRIMMING MECHANISM FOR SEWING MACHINES.

APPLIOATION FILED D120. 29, 1910.

1,016,590. Patented Feb.6,1912.

2 SHEETS-SHEET 1.

WITNESSES VENTOR J. P. WEIS.

TRIMMING MECHANISM FOR SEWING MACHINES. APPLICATION FILED DBO. 29, 1910.

1,()16,590. Patented Feb. 6, 1912.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

JOHN P. wnrs, or NYACK, NEW YORK, ASSIGNOR To LUGIUS 1v. LITTAUER, or GLOVERSVILLE, NEW YORK.

TRIMMING- MECHANISM FOR SEWING-MACHINES.

Patented Feb. 6, 1912. Divided and this application filed. December Serial No. 599,796.

To all whom it may concern.

Be it known that I, JOHN P. WVEIs, a citizen of the United States, residing in Nyack, county of Rockland, and State of New York, have invented a new and useful Improvement in Trimming Mechanism for Sewing- Machines, of which the following is a description.

My invention relates to sewing machines of the type in which trimming, binding and sewing are done simultaneously.

' Particularly, my invention relates to trimming mechanism by which the work is trimmed preparatory to binding and stitching the binding to the work, whether the latter be woven, knitted, or otherwise produced.

My invention is especially useful on ma chines for binding knit-goods, or looselywoven fabric, because such materials stretch excessively under the action of the feed and during the application of the binding and also because they ordinarily present a ragged, uneven and rough edge which, if not previously disposed of, will give to the binding, when applied, a bulky, uneven and distorted appearance. With these conditions of the work, diificulty has been found in mechanically applying the binding evenly and smoothly and in a manner to overcome the tendency of the material and binding to pucker or stretch relatively and avoid the uneven and bulky appearance of the edge of the work after the binding is applied.

It is, therefore, among the objects of my invention to provide certain novel features of construction and combinations of elements which, in the machine, will operate and cooperate to trim the edge of the work uniformly and accurately, during the progress of the body-fabric and binding; and to dispose of the trimming so that it will not interfere with the work or the stitch-forming mechanism.

With these and other objects in view, which will be clearly set forth during the course of the description, my invention consists in certain elements and combinations of elements, devices and features of construction, all as hereinafter fully set forth and particularly referred to in the claims.

In the drawings, forming part of this description: Figure 1 is a top-plan view of the cloth-plate and a horizontal section of the vertical arm of a sewing machine to which my invention has been applied; Fig. 2 is a side elevation of Fig. 1; Fig. 3 is a transverse vertical section of the machine taken just to the right, in Fig. 2, of the trimmer-blade, or substantially centrally of the trimming mechanism; Fig. 4: is a perspective view of the guard-plate; and Fig. 5 is a perspective view of the trimmer-blade and its attached shunt-guide.

In the drawings, the numeral 1 indicates the bed-plate of the machine, 2 the vertical arm thereof, which'is extended into an overhanging-arm, carrying at its forward end, as usual, the head in which the needlebar 3 and presser-bar 4 have their hearing, the needle-bar having a vertically-reciprocating movement, as usual, from the vibratory lever, having the depending-arm 5, connected by pitman 6, to the looper 7 of the machine.

The drivingshaft 8' extends longitudinally of the machine, and aotuates the feeding mechanism, the parts of which are indicated by 9. These parts, together with the needle 10, presser-foot 11, cloth-plate 12, throat-plate 13, slide-plate 1 1, carrying binder 15 and guides 16, are all, or may be, the same as similar parts shown in my pending application Serial Number 507 ,368, filed July 13, 1909, of which this case is a divi- S1011.

The trimming mechanism is arranged so as to trim the edge of the body material not only in advance of the stitching, but also in advance of the application of the binding to the edge of the body material, the trimmer and ledger blades, in consequence, being arranged in front of the binder, as clearly shown in Figs. 1 and 3.

The trimming mechanism, in its general structure and its mode of application to the machine, is, in all material respects, substantially the same as that disclosed in my pending application Serial No. 279,116, filed September 19, 1905, and, in consequence, a detailed description will not here be given; but the various parts, which are features of the trimming mechanism of my said application, and which are necessary to an understand ingof my present invention, will be presently described. One of the important features of my present construction resides in the addition of a diverter 18, for the trimming which is out from the edge of the bodymaterial, to the upper arm 19 of the trimmerlever, sa1d lever having, at its forwardend, the trimmer-blade, extending at a rightangle thereto, of the same form as innny last said pending application. The diverter extends horizontally along the length of the trimmer-arm 19 and conforms substantially to the shape thereof and is vertically turned 'or upturned at its rear end to produce the diverter-portion 20, at the upper end of which is the overhanging-guard 21, which preventsthe trimming from rising and runnmgover the diverter-portion. An important feature of this constructlon resides in V the fact thatthe diverter, thus combined with the trimming mechanism, can be quickly removed from the machine and disposed of when the trimmer is removed; and the particular advantage of having it connected to p the trimmer-arm is that when, during the operation of themachine, it is desired .to

stop the trimming action of the trimmerblade,-the latter, together with the diverter, can be quickly, depressed below the cloth I plate of the machine by the mechanism illustratedin Figs. 2 and 3 and fully set forth in my aforesaid application, Serial No. 279,116. This mechanism generally speaking consists of the eccentric 30 surrounded by v the strap 31, the tubular extension 32 of whichreceives within it the rod. 33 pivoted at 34 to the lower end of the bell-crank lever 1 the .trimmin the lever 37 1s unlatched, thus breaking the coupling or connection between-the members 32 and 33 and preventing the eccentric 30 from actuating the bell-crank lever 1719. When this occurs, the diverter and the cutting-blade of-the trimmer are depressed so that the cutting-blade hasno function; and it requires only that the rod 33 be pressed into the'extension32 and the latch-lever 37 reset, in ordertoagain set the-trimmer and diverter into operation.

All this is more fully set forth in my aforesaid application. Another'important feature is that, by connecting the diverter to the trimmer-arm, said diverter is kept in constant vibration during ,7 to the shunt-guide and guard-plate shown in the'trimming operation, resulting in keeping the trimming constantly in movement andcausing the same to be gradually carried away from the trimmer-arm and over Fig. 4. This keeps the diver-terfree from bein' crowded with the trimming and also seeps the diverterfree from lint since the agitation or vibration of said diverter willcause the lint to also be carried over to the shunt-guide and guard-plate. This has the important advantage also of keeping the driving-shaft and other parts, located below the cloth-plate,: quite free from lint, which, in the present machines, ultimately clogs the mechanism and retards the free and rapid action of the machine.

The cooperating shunt-guide and guard i shown inFig. 4 consist of a plate having the longitudinal, outwardly-deflected, lower portion 22, which extends to the bottom of the bed-plate, and, above the same, a substantially vertical portion 23, provided at its opposite ends with the longitudinal slots 24, through which attaching-screws 25 are passed and which are screwed into the front edge of the bed-plate, as shown in Fig. 2, the slots permitting adjustment of the said plate lengthwise of the machine. Above the said vertical portion 23, the guard is formed concaved to its top edge, as shown at 26.

These features constitute the guard-portion of the plate, since they prevent lint, dust and other substances from reaching the operating mechanism of the machine at this point and reX entthe work from engaging said mechanism and the latter from throwing oil upon the work. The shunt-guide port-ion of the plate comprises the inclined Jart 27, connecting at its lower end with the concaved portion 26,'and having at. its upper end the substantially horizontal ledge 28, extending rearwardly to the vertical portion 29, which forms a continuation of the concaved portion 26 of the plate. \Vith the plate thus constructed, and in the position shown in Fig. 2, the trimming of the body ma terial will be cast over onto the diverter 18 and the vibration of the latter will cause said trimming to be gradually and continuously moved, together with all lint produced during the operation of the machine, over to the shunt-guide, down the inclined surface of which said trimming and lint will rapidly pass and will be deflected away from the machine by the outwardly-turned, lower portion 22 of said guard-plate.

From the foregoing description, but a brief statement of the mode of operation will be necessary and, principally, it should be understood that, if knit-goods are operated upon and a differential movement is given to the feeding mechanism, the bodymaterial will befed up to the trimmer, past the binder and to stitching position by the differential feed-dog, the binding being applied to the edge of the body-material by the binder, and the binding stitched in place. The two materials, as thus combined, will be fed away from the stitching position. As the body-material is fed into and through the machine, if the trimmer is in operation, the edge thereof will be evenly trimmed and the trimming will naturally fall to the right side upon the diverter, the rapid vibration of which will carry said trimming, together with lint which may be produced, directly over onto the shunt-guide and thence down the incline thereof to the bottom of the concaved portion 47 of the guard-plate, and thence to the floor, or into a catch-all, which may be supplied for the purpose.

An important feature of my invention resides in the fact that, at any time during the stitching and binding, trimming of the body-material can be carried on in advance of the stitching and binding and can be omitted at the will of the operatorin order to produce special work. Other important features and combinations will have stress laid upon them by being mentioned, both broadly and specifically, in the claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. The combination in a trimming mechanism, of a ledger-blade, a vibratory arm, a trimmer-blade carried by said arm at a right-angle thereto, a diverter extending along the length of the arm and of the blade, thus providing a guard portion cooperating with said trimmer-blade and a receiving portion cooperating with said arm for receiving the trimming of the work.

2. In combination, a trimming mechanism including a vibratory blade, a diverter attached to the vibratory blade, and means whereby the trimmer and the diverter may be thrown into and out of action at the will of the operator during the running of the machine and Without disturbing the action of the latter.

3. In combination, a trimming device, a diverter for the trimmed edge of the material comprising a horizontally disposed plate terminating in an upturned portion and an overhanging guard, and means whereby the diverter may be vibrated so as to cause the said trimmed edge to be carried away from the trimming device.

4:. In combination, a trimming mechanism, a horizontally arranged diverter, a shunt-guide, having a ledge, and means for vibrating the diverter whereby the trimming of the work will be caused to travel Copies of this patent may be obtained for laterally away from the trimmingmechanism, into cooperation with the shunt-guide and over the ledge thereof.

5. In combination, a trimming device, a diverter for the trimmed edge of the material, and means whereby the diverter may be thrown into and out of operative position at the will of the operator during the running of the machine and without disturbing the action of the latter.

6. In combination, a trimming mechanism including a vibratory blade, a vibratory diverter cooperating with said blade, and means whereby the trimmer and the diverter may be thrown into and out of action at the will of the operator during the running of the machine and without disturbing the action of the latter.

7. In combination, a trimming mechanism, a horizontal vibratory diverter arranged at one side of the trimming-blades of said mechanism, a stationary shunt-guide arranged below the diverter in cooperative relation to the latter, and a guard co6perating with the shunt-guide and diverter, substantially as described.

8. In combination, a trimming mechanism, a horizontal vibratory diverter arranged at one side of the trimming-blades of said mechanism, said diverter having an overhanging guard cooperating with one of said blades, and a shunt-guide cooperating with the diverter, the latter and shunt-guide acting to carry the trimming away from the trimming-blades.

9. In combination, a trimming mechanism, a horizontal vibratory diverter cooperating with the trimming mechanism, a shunt-guide arranged under the diverter at one side thereof for receiving the trimming from the latter, and a guard carried by the shunt-guide and cooperating with the di verter, substantially as described.

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

JOHN P. WEIS.

Witnesses:

EDWARD L. RUSSELL, LoUIs R. KRUG.

five cents each, by addressing the Gommissioner of Patents, Washington, D. G."

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