US1299536A - Fabric-cutting machine. - Google Patents

Description

1. APPELBAUM.

FABRIC-CUTTING MACHINE.

APPLICATION FILED IuLYII, I9Is.

Patented Apr. 8,1919.

/6' v i mIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIl A TTOR/VE YS UNITED STATES PATENT QFFTCE.

JOSEPH APPEIJBAUM, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNE- ASSIGNMENTS, TO ISAAC APPELBAUM, 0F PHILADELPHIA, PENNSYLVANIA.

FABRIC-CUTTING MACHINE.

Specification of Letters Patent.

Patented Apr. s, 1919.

Appiication fiiea July s, 191s. 'serial No. 243,766.

. a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Fabric-Cutting Machine, of which the following is a specication':

My invention relates to an improvement in the blade ofa fabric cutting machine, and consists of the novel construction of the blade with a plurality of cutting edges rendering the blade reversible for use.

It consists also of novel means for connecting said blade with the operating mechanism of the machine whereby the blade is steadied and guided true in vits reciprocations.

. The invention is satisfactorily illustrated in the accompanying drawing, but the important instrumentalities thereof may be varied, and so it is to be understood that the invention is not limited to the lspecific details Ishown and described, aslong as they are within the spirit or scope of the claims.

Figure 1 represents a side elevation of the portion of a fabric cutting machine embodyinfr my invention.

Fig. 2 represents a vertical section thereof. Fi 3 represents a vertical section on line 3 3 ig. 2.

Fig. 4 represents a side elevation of the blade.

Fig. 5 represents a top or plan view of a` portion of the device.

Fig. 6 represents a side elevation of a detached member of the device.

Fig. 7 represents a vertical section of a portion of the blade, and a portion of the member below the saine separated therefrom.-

Fig. 8 represents a transverse section on line 8--8 Fig. 2.

Figs. 9 and 10 represent.. transverse sections of modiiications'of portions ofthe device.v

Similar numerals of reference indicate correspondingv parts in the figures.

Referring to the drawings.

1 designates a bracket which is stationarily connected at its upper end with the adjacent portion of the frame of a fabric cutting machine, which latter excepting the features of my invention applied thereto is well known in the art.

Themain limb 2 of said bracket is divided at one side in vertical direction forming the vertically-extending runway 3 which is adapted to 'receive the reciprocating blade or cutter 4, the cutting edge kof which eX- tends forwardly vfrom the edge of said limb 2 so as to enter the fabric that is placed on the base 5 of the machine, and the same.

VThe limb 2 of the bracket has on its lower cut through end the sustaining foot 6 which is screwed or otherwise firmly connected with the base 5, and has therein the vertically extending recess 7 which is in communication with the runway 3 in said limb 2, Yso that the lowerV portion of the blade 4 may enter said recess 7 on the descent of the blade. The blade has matched cutting edges respectively on its opposite ends, either edge of which may be presented to the front for cutting operation, and the blade is adapted also to be overturned so that the top of either cutting edge maybe placed below and vice versa, thus adding to the efficiency of said cutting operation.

8 designates upright bars which are Yver-l tically separated forming between them the space 9 into which the blade 4 is adapted to be received, said bars being connected at the bottom by apiece of material integral ltherewith, the upper end of which piece forms the shoulder or rest 10 for the lower end of the blade, said end hav-ing the bifurcation 11 which is adapted to be seated on said shoulder. The depending side Walls of said bifurcation 11 embrace the side walls of the bot-. tom connecting piece of the bars 8, thus steadily supporting the lowerl portion of the blade in vposition on said connecting piece. The upperportion of the-blade is formed with thebifurcation 12 which is adapted to receive the lug 13 on the inner side of one of the bars 8, it being noticed also that said bars are on opposite sides of the blade 4, and their upper ends have thereon Vthe eyesf 14 which are adapted to be connected with the slide head 15 of the machine by the bolt 16, or other means, and so being somewhat :resilient may be brought together at the top,

while their main lengths are pressed tightlyV be removed from the bars for the purposel nel, and means on the machine connected l way 3 in the limb :2 of the bracket are the.`

vertically extending grooves or channels 17, which are in communication with said runway and'in which are adapted to be freely fitted the bars 8 so that the latter project- ,ing from the sides of the blade as beads or ribs are guided in the bracket inthe reciprocations of the blade, and so said -bars and consequently the blade move steady Vin their reciprocations in the bracket, thisbeing especially true of the blade whereby its cut is uniform and smooth.l

The bars 8 may be half round as shown in Figs. 2 and 7, quadrilateral as shown in Fig. 9, or triangular asshown in Fig. 10, the result of operation. being the same in either case, so I `do not limit myself to the shape of said bars, but in all cases they are spaced on the blade and in the runway so the inner cutting edge of the blade does not Contact with the inner or rear wall 18 of the4 runway and so is prevented from being dulled by said wall. l v

It is evident that when the bars are disconnected from the head 15, said bars and the blade may be withdrawn through the runway fromthe limb 2, and the blade may of sharpening the blade or reversing it, after which that bars may be reapplied to the blade and both reinserted in the runway, and the bars then re-connected withv the head, the blade thenbeing operative as before. The bracket 1 in the present case comprises the standardfon which the frame of the machine is sustained on the-base 'and secured thereon by the foot 6, as has been stated.

The bars V8 comprise rib-like members on the sides of the blade serving a-lso to stiften and strengthen the latte-r and keep it true in the direction of its length. t Having thus described my invention what I claim as new and desire'to secure by Letters Patent, is

wall of said runway in communication with the latter, a removable and reversible blade slidably occupying said runway, a laterally projecting bar on the side'of said blade secured thereto slidably occupying said chanwith said barA for reciprocating the latter and consequently said blade.

2. In a fabric cutting machine, a slidable and removable blade having bifurcations ref' spectively on its upper and lowerterminals, a

carrier for said blade removably fitted there- `to formed of a pair of resilient spaced apart bars, the lower terminals ofwhich bars are connected by a member forming lashoulder Von which the under wall ofthe lower bifurcation of the blade is seated, and whose Side walls are adapted to embrace said piece, an inwardly projecting lug on the inner side of one of said bars adapted to enter theV upper bifurcation of said blade, means on said bars for holding them closed on said blade, means Y for connecting said bars with an-operating member of the machine and a guiding member on the machine, the same having therein.

a runway which said blade freely occupies and the walls of said runway having therein channels in communication withV said run-- way which saidfbars freely occupy.

3. In Va fabricv cutting machine, a blade, having bifurcations respectively on its-upper and lower terminals, a carrier for said blade consisting of a pair of resilient bars occupying respectively opposite sides of said blade, said bars hav-ing at one end apiece connecting the same, the adjacent 'bifurcation of the'blade being seated on the top. of ysaid piece and embracing thesides thereof, one

of said bars having on its inner side a lug which is adapted to enter the other bifurcation of said blade, said bars having also on f their upper ends means for closing the same tightly on the blade and forming-a connection with the operating 4mechanism of the per and lowerf terminals, a `bracket havingv therein a vertically extending runway --in which said blade is slidable, spaced apart bars adapted tobe fitted on opposite sides i of said blade, the walls of the runway having therein vertically extending channelsY in communication with the runway, saidl bars 4freely occupying said channels and being 1. In a fabric cutting machine, a bracket having a runway therein, a channel in the .JOSEPH APPELBAUM.

IVitnesses: Y Y

'JOHN A. WIEDEBSHEIM,

N. BUssINGER.

Copies of this Apatent may be obtained for vecents each, by addressing the Commissioner ofnPatents, Washington, D. Cs

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