US660441A - Loom. - Google Patents

Description

N0. 660,44l. Patented 0st. 23, I900.

A. msmaen.

LOOM.

A lication filed Oct. 4, 1899.\

(No Model.) 2 Sheets-Sheet l.

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LUUM

No. 660,44i.

( A-ppliotion filed on. 4, 1899..)

2 Sheets-Sheet 2.

(No Model.)

UNITE STATES PATENT ()FFicE.

ALFRED INSINGER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR' TO THE INSINGER COMPANY, OF SAME PLACE.

- SPEGIFICATION forming part of Letters Patent No. 660,441, dated October 23, 1900.

Application filed October 4, 1899. Serial No. 732,525. on model.)

To all whom it may concern:

Be it known that I, ALFREDINSING-ER, a citizen of the United States, residing at Phila delphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvementsin Looms; and

I do declare the following to be a full, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use the same.

This invention relates to looms, and more particularly to that type of looms wherein several distinct narrow fabrics are simultane ously woven; and the object of my invention is to provide means for actuating the shuttles in such manner that they will be start-ed through the shed promptly on the formation thereof and under a constantly-accelerated speed until they approach the position of rest, when they will be gradually stopped. Such movement is highly desirable in a narrowware loom, where a large number of shuttles are employed and are constantly being reciprocated a short distance simultaneously through their respective sheds, as will be well understood. This objectlattain by the mechanism hereinafter described, and definitely pointed out in the claims. r In the drawings forming a part of this specification, Figure 1 represents in side elevation so much of a narrow-ware loom as is necessary to show my invention applied thereto. Fig. 2 is a fragmentary end view of sufficient of the loom to illustrate my invention applied thereto. Figs. 3 and at are enlarged details in side elevation and section, respectively, showing my invention detached.

Those parts of the loom structure not directly associated with my presentinvention.

such as the take-up and let-off beams, the.

heddles, and their operating meanshave been purposely omitted. from the drawingsin order to avoid complication, and such parts of the loom are and maybeofany usual construction, as will be understood.

Mounted upon the main-frame A in a manner to permit reciprocation is the lay B, in the present instance shown as hung from the top of the loom-frame, as is common in this class of looms and Well understood by those skilled in the'art, and said lay is or may be driven from the crank-shaft 0 through any suitable or'usual connection, as the pitman D. Carried by the lay is the usual divided or sectional reed E, alternating with the reedspaces e'of which are the pinions e e, which, meshing-with suitable racks or teeth on the shuttle S and with the rack-bar M, serve to move the shuttles S in their guideways s and through the shed of the adjacent warp when, ,the rack-bar is reciprocated, all as usual in this class of loom, which, therefore, need not be more fully described.

Suitably secured to the main frame A, as by means of the bracket b, arms I) b, and screws or pins 1) 17*, is the fixed eccentric disk F, on the peripheral ways ff of which is loosely mounted the drive-gear G, free to turn thereon. The crank-shaft- O which is driven from any suitable source of power, passes through an eccentric perforation c in the fixed disk F and has secured thereto an arm a,-slotted at a. Fixed to the gear G and projecting from theface thereof, so as to enter the slot of of the arm Ct, is the pin (1 whereby as the crank-shaft O is revolved motion is imparted to the gear G in a manner which will hereinafter more fully appear.

Mounted-on the stud h,- secured to the main frame A below the crank-shaft C, is the loose motion-transmitting gear H, which meshes with and derives motionfrom the pinion G,

and carried by said gear H is the crank-arm 't', I

sponding pint and to said pins 1' and 71 are connected the straps m m, through which reciprocating motion is imparted to the rackbar for actuating the shuttles in a manner previously explained. The crank-arm i is preferably slotted at either end, as at i, Fig. 1, .to afi'ordan adjustable connection between the. straps m m and the arm, as indicated in Fig. 1. In this case, also, it is necessary to form a slot 2". in the gear-H, so that both pins 11 and 2' may be moved a corresponding distance from or toward the center of the gear, and thus give the rack-bar M* its proper motion of reciprocation. From the pins '6 11 the straps m m lead and are secured to pulleys or disks M M respectively, loosely mounted upon a stud or pin P, secured to the main frame of the loom. Fixedly connected to the pulleys or disks m m respectively, are cor- IOO responding pulleys or disks 111 m to which are connected one end of the straps m m", respectively. One of these straps m passes over a guide-pulley m", Fig. 1, mounted on the lay, and its end is carried inward along the lay and secured at m to the rack-bar M. The other of these straps m is passed around a similar guide-pulley m and its end carried outward along the lay and secured to the rackbar M near its end, as at m. 'Ihusit will be seen that as the straps or and m are alternately reciprocated they impart to the rack-bar M a positive motion first in one direction and then in the other to thereby pass the shuttles through their respective sheds in each direction.

In the workingof this type of loom, wherein a large number of shuttles are employed to be simultaneously moved through the sheds, it is desirable that .such motion shall commence promptly as soon as the shed is formed that it shall be accelerated during the passing of the shuttles and until they approach their extreme positions,when it should be gradually decreased to bring the shuttles to a state of rest. These desirable objects are attained by the peculiar driving connections between the crank-shaft and the gear H, wherein the operation is as follows: The position of parts as indicated by Figs. 1 and 2 shows the shuttles at rest and ready to begin their travel through the sheds. It will be noted that the slotted arm a is now in such position that the pin a on the pinion G is at the extreme end of the slot and that the arm '5 is in such position that the rack is at one extreme limit of its movement. The movement of the crank-shaft now imparts to the pinion G rapid peripheral movement, which is transmitted through the gear H to the arm 2'. This rapid movement of arm '5 when in the position indicated by Fig. 1 is desirable, for the reason that the arm is then in such position that only slight movement will be imparted to the shuttle-operating rack,

.and to secure prompt movement of the shuttles this position of the arm 2' must be quickly passed. As the crank-shaft continues to revolve the eccentric relation between the shaft 0 and pinion G causes the pin a to travel in the slot at of arm' a, and a consequent decrease of motion is thus continuously imparted to the gear H and arm 'i as the latter approaches its position of most effective motion transmission. (Indicated in Fig. 2.) Continued rotation of the shaft causes a reverse action of the parts. The pin a travels toward the outer extremity of the slot at, and a gradual increase in the motion imparted to arm t' takes place until the parts assume the original position. It will be noted that the size of the pinion G is one-half of gear H. Therefore while the former makes a complete revolution the latter makes only a half-turn, causing the ends of arm *5 to change position.

By the operation just described the shut tles have been promptly started through their sheds, and while their motion has been aocelerated up to their central positions and then gradually decreased it has yet been rendered more uniform and devoid of injurious and abrupt changes, as would be the case in the absence of my improvement.

I have described my invention as particularly applicable to the operation of the shuttles in a narrow-ware loom, and I have found it of great use in this connection; but I do not desire to limit myself to that use alone, as it may be employed in other relations-as, for instance, in the shedding-motions by the well-known dobby or jacquard mechanism, wherein the object is'to start to open the shed quick, and then as the warps reach the position of greatest strain, as when the shed is nearly formed, to make the movement proportionately slow. The adaptation of my device to these uses will be readily understood by those skilled in the art, it being necessary only to connect the arm 71 with the usual griffs of the jacquard or the knives of the dobby.

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

1. In a narrow-fabric loom, the combination of a crank-shaft, a circular pinion mounted on a stationary bearing eccentric to the said shaft, a circular gear provided with twice the number of teeth as the said pinion and in mesh therewith, a slotted arm carried by said shaft, and a pin fast to the pinion and entering the slot, whereby the speed of the gear is successively increased and decreased twice during each revolution thereof.

2. In a loom, the combination of the lay, the shuttle-operatin g rack-bar mounted thereon and means for reciprocating said bar at a variable speed, comprising a crank-shaft, a pinion eccentric thereto, a stationary bearing for said pinion, a pin-and-slot connection between the pinion and shaft, a motion-transmitting gear in mesh with said pinion, and connections between said gear and rack-bar.

In testimony whereof I aifix my signature in presence of two witnesses. I

ALFRED IN SINGER.

Witnesses:

D. W. HOLLOWAY, J. W; KENwoRTnY.

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