US827997A

US827997A - Jacquard-actuating mechanism for looms.

Info

Publication number: US827997A
Application number: US25512405A
Authority: US
Inventors: Edward A Schneider
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-04-12
Filing date: 1905-04-12
Publication date: 1906-08-07
Anticipated expiration: 1923-08-07

Description

No. 827,997. PATBNTBD AUG. 7, 1906.

E. A. SCHNEIDER. JAGQUARD AGTUATING MECHANISM FOR LOOMS.

APPLICATION TILED APB-12,1905.

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PATENTED AUG. 7, 1906 B. A. SCHNEIDER. JAGQUARD AGTUATING MECHANISM FUR LOOMS. APPLICATION FILED 11312.12. 1905.

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No. 827,997. PATENTED AUG. '1, 1906. E. A. SCHNEIDER. JAGQUARD AGTUATING MECHANISM FOR LOOMS.

APPLICATION FILED APR.12,1905.

3 SHEETS-SHEET 3.

ATTORNEY:

UNITED STATES PATENT OFFICE dACQUARD-ACTUATING MECHANISM FOR LOOMS'.

Specification of Letters Patent.

Patented Aug. 7, 1906.

Application filed April 12, 1905. Serial No. 255,124.

To all whom it may concern:

Be it known that I, ED\VARD A. SoHNEI- DER, a citizen of the United States, and a resident of the city of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Jacquard-Actuating Mechanism for Looms, of which the following is a full, clear, and complete disclosure.

Heretofore in the manufacture of figured haircloth the weaving has usually been done by "hand-looms and the figures formed on the cloth by operating the jacquard mechanism by hand according to the design to be produced. Owing to the fact that the hair used in the manufacture of haircloth is of comparatively large size, is in short lengths, and is heavy, and also owing to the fact that an ordinary shuttle cannot be used to form the woof-threads on account of the stiffness and short length of the hair, the operation of Jacquard looms by mechanical power has not been successful. The friction, weight of the sheds, and the peculiar operation of the needle which is used in place of a shuttle in an ordinary loom requires much more power than in Jacquard looms for weaving cloth of cotton or woolen yarn. Furthermore, the use of'a needle by which the hair is drawn through to form the woof-threads requires that the shed be held open during the insertion of the hair and then be closed at exactly the right point when the needle is being withdrawn to prevent the hair forming the woof-thread just inserted from passing too far through between the sheds. This requires a positive and accurate operation of the jacquard-actuating mechanism, which in view of the greater power required must be of peculiar construction.

The object, therefore, of my invention is to produce a jacquard-actuating mechanism for looms which will obviate the difficulties and disadvantages heretofore encountered and will cause the sheds and jacquard mechanism to be operated positively and accurately.

For a full, clear, and exact description of one form of my invention reference may be had to the following specification and to the accompanying drawings, forming a part thereof, in which Figure 1 is an end elevation of a portion of a loom embodying my invention. Fig. 2 is a longitudinal sectional view thereof, taken substantially upon the line 2 2, Fig. 1. Fig.

3 is a transverse sectional view thereof, taken substantially upon the line 3 3, Fig. 2.- Fig.- 4 is a perspective view of the guide'for the end of the cam-levers, and Fig. 5 is a per' spective view of the cam-followers and their connections.

Referring to the drawings, the numeral 1 indicates a suitable frame upon the horizontal cross portions of which are mounted tWo

parallel shafts

2 and 2. The shaft 2 is provided with a pair of cams, (indicated at 3 and 4,) a gear-wheel 5, and a driving gear-wheel 6. The shaft 2 is provided with two cams7 and 8, which are placed, respectively, opposite the

cams

3 and 4 on the shaft 2. Add these cams are preferably profile-cams-in contradistinction to grooved cams. Said shaft 2 is also provided with a gear 9, which meshes with the gear 5 on the shaft 2. A rod or shaft 10 also has bearings in the frame 1,

and upon this rod or shaft 10 are pivoted" two levers 11 and 12, provided with rollers or cam-

followers

13 and 14, respectively; The levers 11 and 12 preferably terminate -in

sleeves

15 and 16, which are held in position upon the rod 10 by means of adjustable collars 17. The cam-lever 11 projects between the

cams

3 and 7, while the cam-lever 12 projects between the cams 4 and 8, and are 'arranged in such positions that the cam-followers are always substantially in contact with their adjacent cams, said cams being so"designed that the distance between their'surfaces at any given point in the-rotation ofthe cams is practically constant. The outer ends of the cam-levers 11 and 12 are'provided with adjustable guides in the'form of parallel segmental bars 18, adjustably supported upon the

rods

19 and 20, extending between the sides of the frame 1. These guides serve to hold the cam-levers, and consequently the cam-followers, accurately and operativelyain relation to their corresponding cams. The cani-levers 11 and 12 are provided with a series of holes 21 and 22, by which the

rods

23 and 24, which are attached to the jacquard mechanism, are adjustably connected to said cam-levers. The

cams

3 and 7 and 4 and 8 are so designed that motion is given to the jacquard mechanism and to produce the requisite opening and closing of the sheds, as above referred to.

It will be seen that by the use of the cams described a positive and accurate motion is given to the parts. By using two cams instead of a single grooved cam a much more positive motion is given to the acquard mechanism, and at the same time less power is required for operating the same. It will be noticed that in the use of two cams for a single lever the strain or wear upon a single cam is always in the same direction, and said cams are not subjected to forces acting alternately in opposite directions. The mechanism is therefore rendered much more durable. Furthermore, owing to the fact that the cam-followers may be placed at each side of the cam-lever there is no tendency to twist said lever as the movement in the oscillation of the cam-lever changes from one direction to the other. Furthermore, the disadvantage of having the cam-follower operate upon the concave surface of a groove is entirely obviated. These advantages, together with others which are clearly apparent in the op eration of the machine itself, render the weaving of haircloth by an automatic loom entirely feasible, and owing to the arrangement of the cams, which efliciently provide the large amount of power for operating the jacquard mechanism, the machine is enabled to run smoothly and accurately. Having these features of my invention in mind, I do not Wish to be understood as being limited to the exact arrangement of parts and details of form herein set forth; but

What I claim, and desire to protect by Letters Patent of the United States, is-

1. The combination in a jacquard mechanism, of levers for operating the same, profile-cams located on the opposite sides of said levers, the said cams on one side of the levers having a longer riding-surface than the cams on the opposite side of the same, and separate rollers j ournaled on each side of each lever.

2. The combination in a jacquard mechanism, of levers for operating the same, profile-cams located on the opposite sides of said levers, the said cams on the one side of the levers having a longer riding-surface than the cams on the opposite side of the same, and separate rollers journaled on each side of each lever, each roller being always in contact with its respective cam.

side thereof, the cam on the one side having a longer riding-surface than the cam on the opposite side, and rollers journaled on each side of each lever, each roller being always in contact with its respective cam.

5. v The combination in a jacquard mechan ism, of a lever journaled at one end, a segmental guide for the free end thereof, a profile-cam located on each side of said lever, the cam. on the one side having a longer ridingsurface than the cam on the opposite side, and a roller journaled on each side of said lever.

6. The combination in a acquard mechanism, of levers for operating the same, profilecams located upon opposite sides of each of said levers, the cams on the one side having a longer riding-surface than the cams on the other side, the configuration of each cam being such as to give a long dwell and a quickclosing movement to the warps, and separate rollers journaled on each side of said lever.

7. The combination in a jacquard mechanism, of levers for operating the same, profilecams located on opposite sides of each levers, the cams on the one side having a longer riding-surface than the cams on the other side, and the riding-surface of each cam being of such a configuration as to give a long dwell and quick-closing movement to the sheds.

8. The combination in a jacquard mechanism, of levers for operating the same, profile, cams located on opposite sides of said levers, the cams on the one side having a longer riding-surface than the cams on the other side, and the riding-surface of each cam being of such a configuration as to give a long dwell and quick-closing movement to the warps, and separate rollers j ournaled on each side of each lever, each roller being always in contact with its respective cam.

In witness whereof I have hereunto set my hand this 30th day of March, 1905.

EDWVARD A. SCHNEIDER. Witnesses:

ALEXANDER PARK, A. J. FITZPATRIQK.