US1145677A - Dobby pattern-cylinder. - Google Patents

Description

'A. A. GORDON, In.

DOBBY PATTERN CYLINDER.

APPLICATION FILED MAR. 25. 1914.

l Ratented July 6, 1915.

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zel OO OOO OOOOOOOO!OOOOOOOO jur lill di f ALBERT A. GORDON, JR., 0F WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON 6r, KNOWLES LOOM WORKS, OF-WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

BOBBY PATTERN-CYLINDER.

Specification of Letters Patent.

T 0 all whom t may concern Be it known that I, ALBERT A. GORDON, Jr., a citizen of the United States, residing at `Worcester, in the county of Worcester and State oi" Massachusetts, have invented a new and useful Dobby Pattern-Cylinder, of which the following is a specification.

This invention relates to a dobby pattern cylinder and particularly to improved means for positioning and driving pattern chains supported thereon.

It is the principal object of my invention to provide a dobby patterncylinder which is equally adapted to drive chains formed of full length bars and chains formed of short-length bars.

With this object in view, my invention consists in the provision of a circumferentially adjustable member mounted upon the hub of the pattern cylinder and adapted, when in one position, to coperatewith and drive chains composed of full length bars and, when in another position, to coperate with and longitudinally position chains com` posed of short-length bars. s

My invention further consists in certain devices, arrangements and combinations of parts which will be hereinafter described and more specifically pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which* Figure 1 shows a portion of a. dobby with the pattern cylinder shown in section and in its operative position; Fig. 2 is a side eleva tion of the pattern cylinder, the parts being adjusted to cooperate with chains having short length bars; Fig. 3 is a section taken along the line 3--3 of Fig. 2; Fig. 4 is a side elevation similar to Fig. 2 but having the parts arranged to cooperate with a chainl composed of full length bars; Fig. 5 is a section taken along the line 5-5 of Fig. 4, and Fig. 6 is a detail view of the adjustable member.

In Fig. 1 of the drawings the numeral 10 indicates a portion of adobby frame upon which are pivotally supported a plurality of indicating fingers 11 and 12. These ngers are mounted to turn upon the transverse cylindrical bar 13 and are held in position thereon by a transverse rod 14. The lingers 11 cooperate with lifter rods 15 through which the upper hooks of the dobby (not shown) are controlled. The fingers 12 are up-turned at their operative ends and cooperate directly with the lower hooks ot the dobby (not shown). rihe pattern cylinder 16 is mounted in the frame 10 to rotate beneath the indicating lingers and serves to move the bars 17 of the pattern chain intermittently under the fingers 11 and 12. These bars are provided with projecting studs 1S which lift the indicating iingers and thus control the hooks of the dobby.

The mechanism thus far described is of the usual :form and constitutes no part of my present invention.

In the operation oic a dobby oi: this type it is sometimes desirable to use a pattern chain `formed of full length bars such as are shown at 19 in Fig. 4 and at other times it is desirable to use two chains each composed oit short-length bars such as are shown at 2O in Fig. 2.

My present invention relates to means `lor adapting a single pattern cylinder so that it may position and operate chains oiE either type.

My improved pat-tern cylinder comprises a hub 21 having a. flange at each end and having two separated of projections intermediate said 'flanges'. The inner face of each flange is beveled to correspond with the bevel on the end of the pattern chain bars and the flanges thus serve to position the bars longitudinally upon the cylinder.

It will be evident from inspection of Fi 4 that the bars 19 extend the full length of the cylinder between the two ilanges 22 and that any obstruction in the line of the recesses formed between the' projections 23 would render the cylinder inoperative for such bars. Inspection of Fig. 2 will also show that when chains composed of shortlength bars 2O are in use there is a space between the inner ends of the bars and that provision must necessarily be made to prevent longitudinal movement of the bars away from the flanges 22. In order to provide for these two conditions of operation, I have secured to the hub 21 between the projections 23 a circumferentially adjustable member 24 having a plurality of projection lugs 25 formed thereon. rIhese lugs 25 correspond in transverse section to the transverse section of the projections 23 and they correspond in longitudinal section to the angle oi the inner faces oi" thetlanges 22. The member 24 is provided with a slot 26 and :is secured Patented July 6, 1215. y

to the hub 21 by a screw 27 passing through said slot. For convenience of manufacture the member 2li is usually formed in two semi-circular parts, each part being provided with aslot and screw connection for adj ustably securing it to the hub. When it is desired to use the cylinder with a chain composed of full length bars, the member 2l is moved to the position shown in Fig. et in which the lugs Q5 are longitudinally alined with the projections Q3. In this position they do not interfere with the bars 19 and furthermore they cooperate with the projections 23 in driving the pattern chain. Wlhen it is desired to use chains composed of short-length bars, the member 24C is adjusted in the position shown in Fig. 2 in which the lugs 25 are alined with the recesses between the projections 23. ln this position ythe beveled sides of the lugs 25 cooperate with the beveled inner faces of the flanges 22 to position the pattern chain bars longitudinally.

Vhile lhave described my invention as embodied in a dobby pattern cylinder, it is obvious that it may be used in any mechanism in which similar pattern chains are provided. Furthermore it will be evident that many changes and modifications can be made in my invention without departing from the spirit and scope thereof and l do not wish to be limited to the precise details herein disclosed, but

What I do claim is y 1. A pattern cylinder comprising separated sets of chain-driving projections, a flange at each end of the cylinder for posi tioning the pattern chain bars longitudinally, and a member circumferentially adjustable between said sets of projections and effective in one position to coperate with said projections to drive full length pattern bars and in another position to cooperate with said flanges to longitudinally position short-length pattern bars.

2. A pattern cylinder comprising a hub, separated sets of chain-driving projections mounted thereon, a flange on each end of said hub, a member circumferentially adjustable on said hub between said sets of projections and having a plurality of lugs thereon corresponding in transverse section to said projections and in longitudinal section to the inner angle of said flanges, and means to hold said member in adjusted position with said lugs effective to separate full length pattern bars laterally or to separate short length pattern bars longitudinally.

3. A pattern cylinder comprising a hub, separated sets of chain-driving projections mounted thereon, a flange on each end of said hub, and a member circumferentially adjustable on said hub between said sets oit' projections and having a. plurality of lugs thereon corresponding in transverse section to said projections and in longitudinal section to the inner angle of said flanges, said member and said hub having a slot and screw connection effective to hold said lugs in longitudinal alinement with said projections or in alinement with the recesses between said projections as desired.

el.. A pattern cylinder comprising a hub, separated sets of chain-driving projections mounted thereon, a flange on each end of said hub, and a member circumferentially adjustable on said hub between said sets of `projections and having a j'ilurality' of lugs thereon corresponding in transverse section to said projections and in longitudinal section to the inner angle of said flanges, said member comprising` a plurality of parts each having a slot and screw con nection with said hub effective to hold said lugs in longitudinal alinement with said projections or in alinement with the recesses between said projections as desired.

ln testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

ALBERT A. eoRDoN, JR.

lVitnesses E. H. RYON, E. F. GREEN.

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

" Washington, D. C.

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