US625297A - Fourths to george d - Google Patents

Description

No. 625,297. mm May I6, I899. F. FOWLER.

JACHUARD MECHANISM FOR LUOMS.

(Application filed July 14, 1897.)

2. Sheets-Sheet I.

(No Modal.)

3 Aha No. 625,297. Patented May 16, I899. F. rnwu-zn.

JAGflUABD MECHANISM FOB LOOMS.

THE warns PEYERS co. momma, wunmaron. 1;. c.

UNITED STATES PATENT I OFFICE.

FRANK FOlVLER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOROF THREE- FOUR'IHS TO GEORGE D. BROMLEY, OF SAME PLACE.

.JACQUARD MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 625,297, dated May 16, 1899.

Application filed July 14,1897.

To (ti/Z whom it may concern:

Be it known that l, FRANK FOWLER, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Jacquard Mechanism for Looms, of which the following is a specifica- Lion.

The object of my invention is to so construct a jacquard-machine as to provide for lifting any desired section of the warp and for operating the heddles, or, as they are technically termed, shafts or journals, by means of said jacquard-machine and without the use of cams, treadles, or other mechanism for this purpose. This object I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a side view, partly in section, of jacquard mechanism constructed in accordance with my invention with portions of the fixed side frame removed in order to show parts behind the same. Fig. 2 is a transverse section of the machine, and Fig. 3 is an end view of part of the machine.

The fixed frame 1 of the machine is provided with suitable vertical rods 2 for the guidance of reciprocating lifter- frames 3 and 4, which are operated in the usual manner by means of a lever 5 and connecting-rods 6 and 7, so that as one frame rises the other falls. The lifter-frame 4 has the customary transverse bars 9 for engaging with the loops 10, formed upon the hooks 11, which are bent at the upper ends for engagement with transverse plates or blades 12 and are connected at the lower ends to the harness-tails 13, as in the present practice. Instead, however, of mounting the plates or blades 12 directly upon the upper frame 3 in the ordinary manner I secure said plates to a series of lifterbars 14, of which in the present instance I have shown four, although more or less than this number may be employed in accordance with the particular requirements of the loom for which the jacquard-machine is intended. Each of the lifter-bars 14 is rigidly guided vertically through the medium of the guiderods 14, fixed thereto and working in laterally-confined bearings 14, as shown in Fig. 1. The lifter-bars 14 are not connected directly Serial No. 644,525. (No model.)

with the lifter-frame 3, but each of said bars has a transverse yoke 15, terminating at each end in a lug 16, which can be engaged by a hooked lifter 17 on the upper end of a swinging arm 18, hung to a bar 19, depending from the frame 3 and moving with the same. The hooked upper ends of the swinging arms at one side of the machine are connected to those at the other side of the machine by transverse bars 20, so that the hooks at both ends of each lifter-bar 14 rise and fall together. It will be evident, therefore, that when either pair of hooks is projected so as to engage with the lugs 16 of one of the lifter-bars 14 said bar and the harness-tails controlled thereby will be lifted on the rise of the lifterframe 3, and on each rise of said frame 3 one or more, or all, of the lifter-bars 14 can be caused to rise with the same, as may be required by the pattern which is being woven. The hooks 11 are controlled by needles operated by cards mounted on the cylinder 22; but as these needles and cards are the same as usual illustration of them in the drawings has been omitted.

The operation of the arms 18 and their lifter-hooks 17 is effected by means of special pattern-chains 21, applied to each end of the same cylinder 22 which carries the cards for acting upon the needles which control the j acquard-hooks 11, said chains 21 having suitable lugs or projections for acting upon rods 23, one for each of the arms 18, these rods being suitably guided in the fixed frame of the machine and each rod having a projecting arm 24 for engaging with its respective arm 18, as shown in Figs. 1 and 2. Theproj ecting portions of the arms 24, which engage with the arms 18, are in the same horizontal plane, so that each arm 18 is acted upon at the same distance from its pivot, and hence has the same amount of movement imparted to it irrespective of the varying distances of the rods 23 from said pivots. Each of the arms 18 is maintained in its normal or projected position, (shown in Fig. 1,) so as to hold the lifter-hooks 17 out of action by means of arms 24", carried by rock-shafts 25, which are provided with arms suitably weighted to give the desired thrust to the arms 24 Outside of and parallel with the rods 23 is another set of rods 26, which have arms 27, engaging with hooks 28, hung to the upper ends of vertically-guided bars 29, the lower ends of which are connected in any suitable manner to the heddles or, as they are technically termed, the shafts or journals of the loom, there being in the present instance four of these heddle-operating bars at each end of the machine, so that the jacquard is adapted for use in connection with a loom having four shafts or journals; but it will be evident that the number of heddle-operating bars may be increased or diminished in accordance with circu mstances without afiecting my invention. The arms 27 are, like the arms 24 and for the same purpose, all in the same horizontal plane.

The rods 26 are maintained in the projected position (shown in Fig. 1)by the action of arms 30, carried by rock-shafts 31, which also have weighted arms tending to project the arms 30, and on the upper part of the lifter-frame 3 are short transverse plates or blades 32, with which the hooks 28 are adapted to engage when the rods 26 are pushed inward, the latter operation being performed by lugs upon the same pattern-chains 21, which act upon the rods 23. Provision is thus afforded for raising either of the shafts or journals of the loom of the jacquard-machine, and the use of special cams or treadles for this purpose is rendered unnecessary.

It will be evident that a jacquard-machine constructed in the manner described provides for the perfect control of the warp, since different sections of the warp may be controlled entirely independent of each other and any desired thread in any section may be lifted in succession as many times as maybe desired, and any one or more of the journals may be lifted on each operation of the machine.

When the harness is operated through the medium of the heddle-operating bars 29, the end is attained without any corresponding lift of the hooks, this feature distinguishing my invention from jacquards of that class in which all movements of the harness are effected through the medium of the hooks.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. A jacquard-machine in which are combined a lifter-frame, a series of lifter-bars rigidly guided vertically and having blades or plates thereon, a series of hooks for engaging with said plates, a series of heddle-operating bars, actingindependently of the hooks, movable connecting devices interposed between the lifter-frame and the lifter-bars, other connecting devices interposed between the lifter-frame and the heddle-operating bars, and pattern mechanism acting upon both sets of said connecting devices, whereby either lifter-bar or either heddle-operating bar may be actuated on each movement of the lifter-frame, substantially as described.

2. The combination in jacquard mechanism for looms, of hooks connected to the harnesstails, lifter-bars for operating said hooks, heddle-operating bars acting independently of the hooks, a lifter-frame and movable connecting devices between said lifter-frame and heddle-operating bars, whereby any one or more of the heddles can be raised by' the lifter-frame independently of the lifting of the hooks by the lifter-bars, substantially as described.

3. The combination of the lifter-frame, lifter-bars rigidly guided vertically and having transverse yokes terminating in projecting lugs, hooked arms carried by the lifterframe and engaging said lugs, and pattern mechanism for controlling the position of said arms, substantially as described.

4. The combination of the lifter-frame, lifter-bars, hooked arms hung to the lifterframe, one at each end of each lifter-bar, a transverse bar rigidly connecting the opposite hooked arm of each pair, and pattern mechanism for operating the arms, substantially as described.

5. The combination of the lifter-frame, a series of hooked and pivoted lifters operated thereby, a series of superposed rods, pattern mechanism acting upon the latter, and arms projecting from said rods and terminating in portions, all in the same horizontal plane, for engaging with the hooked lifters, whereby each arm is acted upon at the same distance from its pivot, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK FOWLER.

WVitnesses:

F. E. BEcHToLn, Jos. H. KLEIN.

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