US1133839A - Cloth-cutting machine. - Google Patents

Description

P. J. CLARK. GLDTH CUTTING MACHINE. APPLICATION FILED APR.28, 1913.

Patented Mar. 30, 1915.

7006705 07 ZZZ 1 Liz/02 204;;

TO-LITHO.. WASHINGTON. D, C.

ms s'rans r rn r orrron FREDERICK J. CLARK, OF BUFFALO, NEW YORK, ASSIGNOR TO EASTMAN MACHINE COMPANY, OF BUFFALO, NEW YORK.

CLOTH-CUTTING MACHINE.

To all whom it may concern Be it known that I, FREDERIGK J CLARK, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Cloth-Cutting Machines, of which the following is a specification.

This invention relates to improvements in cloth cutting machines of both the reciprocating and the rotary knife type. In the former, as commonly constructed, there is suspended from the frame of the machine in advance of the knife a presser foot which is adapted to rest upon and travel along the cloth in advance of the knife and hold the cloth in place, while in the latter or rotary knife type, no presser foot is generally used, but a knife guard is required which is suspended from the frame of the machine in advance of the knife to prevent the hand of the operator from coming in contact with the knife. It is necessary that both the presser foot in the reciprocating knife machine 7 and the knife guard in the rotary knife machine be adjustably mounted on the frame of the machine so that they can be raised and lowered to accommodate whatever thickness of cloth the machine is to cut.

This invention relates to the means which are employed for adjustably securing this knife preceding member, whether presser foot or knife guard, to the frame of the machine and for raising and lowering it thereon, and the object of this invention is to mount the knife guard or presser foot on the frame of the machine in such manner that it can be easily and quickly adjusted by the operator of the machine to accommodate any desired thickness of cloth and will automatically lock in such adjusted position so that the necessary adjustment can be readily made by the operator with one hand.

In the accompanying drawings: Figure 1 is a side elevation of a rotary knife cloth cutting machine provided with a knife guard embodying the invention. Fig. 2 is a side elevation, on an enlarged scale, of the knife guard and its adjusting means detached Specification of Letters Patent.

Patented Mar. 30, 1915.

from the machine, showing the side of the guard opposite to that shown in Fig. 1. Fig. 3 is a fragmentary section thereof on line 33, Fig. 2. Fig. 4 is a fragmentary sectional elevation of the front of the machine on line 45- 1:, Fig. 1.

Like reference characters refer to like parts in the several figures.

The invention is shown in the drawings as applied to the knife guard of a rotary knife machine of standard type which comprises a base plate A, a standard B secured thereto and supporting the frame G, a rotary knife D and a motor E which is carried by the frame and is geared or otherwise operatively connected with the knife. In front of the machine is hung the usual electric lamp F for lighting the pattern in front of the knife. All of these parts are common in rotary knife machines and may be of any suitable and desired construction.

G represents the knife guard which may be of any suitable construction. The guard shown comprises a depending curvedportion 9 which is adapted to move over the upper surface of the cloth and an upwardly extending portion 9 in advance of the front edge of the knife which cooperates with the lower portion 9 to form a guard for the front edge of the knife. The guard G is provided with an upright rod or bar 9 which is slidably mounted on the frame of the machine and can be moved up and down thereon for raising and lowering the knife guard, and this invention relates to the means which are employed for accomplishing this and which are constructed as follows: H represents a support or bracket which stands upright at the front of the machine and may be made integral therewith or may be secured to the frame G of the machine in any suitable manner. In the construction shown, this bracket is separate from the frame of the machine and has upper and lower ears or extensions k and h which are secured to the frame O by screws 72 h. This bracket is provided adjacent to its upper and lower ends with suitable ways or bearings I for the upright rod 9 in which this rod is adapted to slide vertically, and these Ways are closed by plates 6 Which retain this rod in sliding engagement there- With.

For moving the rod g up and down in the ways" I for raising and lotvering the knife guard, the following Construction is employed: The bracket H is provided With a forwardly projecting arm K which terminates in a toothed segmentlc and on this arm intermediate of its ends is pivoted an adjusting lever L which is connected at its inner end by a pivoted link Z to the rod g M iv and" at its opposite oi 'ou'ter' end istrotiaea with a handle portion Z, having a springactuated dog or latch Z2 Which is adapted to en a the eet ot he s gment 2:. The dog 1 may e o n ed on t e a justingl ver. in dnyhllitah e man er- In the cons uction shown, the. and e Por 'Z" of this ever has a lo gi udina slo t termed in one side thereof and in this slot the dog Z? is pivoted, sp ing be ng in rpos be ween the dog and the back of the slot to hold the dog normal y n ts dvan ed too h engagin posilOIl- F The pe a or o the machine by taking hol of th handle o he adjus ing lever. and pressin t e dog 1% inwardly can easily ree se th s. d g from e gagement with the teeth o he. seg ent in a d can hen move his. lev to adju t the k e gu to y desir d posi ion Upon rel a ing h dog hi dog il at once spr ngi t s-ne m nt wi h he eeth i the segmen it n thu e to e e lly eek the a justing lever With the mife gua d, whie is s pported y i a ai st movement in. i s adjusted Po ii n T one nt n of he adju ng e er for ais ng and owering the kn t gun-rd eon be asily an qu etly edeeted y one hehd o ha if es ed, he adjustm n o he knife ar en h made by the. operator while the machine s n operat nhe dj sti g ever a ds in fr n of the a hin W e is ut o the way and W re it n n be eas ly ad ed by the peneter- This. err n ement oihe adjus in lever a s enab es t e lette and suppor ng ree et l e ea y s emed. t e f ame ofhe machin With u equi ng ny r n ehe es n he shene o stm nre o he tre he- Th ons ructio is herefor adapta e to ma n s at stand rd yp Wi h ut nee esit t a te t o s. e e en a s a ed here, s epn ie hle qua y a W l e nre ee 'i ot o a re i o a ng sn ehine as to h g de guard f a a y n fe a ine I he con truct n fo s a i ple a d e s ly opera e inste le s p r o e ndie p eoe in her, Whe h knife g a r P esse eet I is i tn nsite a d ten be, readily e u ed the machine,

to the frame of the machine and when in place thereon Will operate to automatically and positively lock the knife guard or presser foot in-its various adjusted positions.

I claim as my invention:

1. In a cloth cutting machine, the combination with the frame of the machine, of a supporting bracket secured to said frame, an upright rod mounted to slide vertically in said bracket, a member carried by said rod 'and'arranged in front of the knife of an adjusting lever pivoted on said bracket "and connected at one end with said rod for raising andlowering said lniifepreceding member, and means for locking said lever in its adjusted positions, substantially as set forth;

2. In a cloth cutting machine, the combination With the frame of the machine, of a upporting bracket secured to. said frame at the front of the machine, an upright rod mounted to slide vertically in said bracket, a member carr ed by said rod and arranged in ront of the knife of the machine, an arm extending forwardly from said bracket, an adjusting lever pivoted on said arm and conneo ed at one end and lowering said knife-preceding member, and means for locking Said lever'in its adj s ed positions, substantially as. set forth.

3. In a cloth cutting machine, the comination wit the rame ofthe machinaof a supporting bracket secured to said frame at the ont of t e. m ehine, an upright rod mo nted t ide vert a ly in said bracket, a member ca ried y said rod and arranged in front of the knife of the machine, an arm extending fo w rdly from sai bracket and ermina ingin aoo hed segmen adjusting lette pivo d o said arm intermediate f the end o sn d a m a d connected a one end With aid rod for aising nd l wering said nd e-pr c di g member, and a spring pin ss d dog car ied by sai le er and adopted to eng ge said oothe segment for look ng said lev r n its a justed. positions, sub n ly as set forth.

e In cloth, c tt ng machine, the mwith said rod for. raising bin tion With the frame f t ma hine, of 7 an pright od mou ed t lide ver ica y ,11 sai f ame nd provided at its lower end wi h a m mber rranged n f n of the kni an adjust ng. lever pivotal y mounted n said frame. d co ec ed at one en ing lever pivotally mounted on said frame Witness my hand in the presence of two in advance of said rod and connected at subscribing Witnesses. one end with said rod for raising and lowering said knife guard, and means for lock- FREDERICK J. CLARK. ing said lever in any one of a plurality of "Witnesses:

adapted operative positions, substantially G. V. PARKER,

as set forth. C. B. HORNBECK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G.

It is hereby certified that in Letters Patent No. 1,133,839, granted March 30, 1915,

upon the application of Frederick J. Clark, of Buffalo, New York, for an improvement in Cloth-Cutting Machines, an error appears in the printed specification requiring correction as follows: Page 3, line 6, for the word adapted read adjusted; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this etth day of May, A. D., 1915.

[SEAL] R. F. WHITEHEAD,

Acting Commissioner of Patents.

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