US832013A

US832013A - Fancy-loom.

Info

Publication number: US832013A
Application number: US28461805A
Authority: US
Inventors: John R Fitton
Original assignee: CROMPTON THAYER LOOM Co
Current assignee: CROMPTON-THAYER LOOM Co; CROMPTON THAYER LOOM Co
Priority date: 1905-10-27
Filing date: 1905-10-27
Publication date: 1906-09-25
Anticipated expiration: 1923-09-25

Description

PATENTED SEPT. 25, 1906 J. R. FITTON. FANCY LOOM.

v APPLIOATION FILED 00127, 1905.

THE "cams PETERS ca, WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

JOHN R. FITTON, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO OROMPTON-THAYER LOOM COMPANY, OF WORCESTER, MASSA- CH USETTS, A FIRM.

FANCY-LOOM.

Specification. of Letters Patent.

Patented Sept. 25, 1906.

Application filed October 27, 1905. Serial No. 284,618.

This invention is an improvement on the class of fancy-loom represented in United States Patent No. 274,914 granted to George Crompton April 3, 1883, wherein partial cylinders engage vibrator-gears and move jacks or levers instrumental in forming sheds in the warp and also for moving a series of dropshuttle boxes. In the patent referred to one set or pair of partial cylinders engage and move the vibrator-gears used in shedding, and the shafts carrying each of said cylinders are each provided with a second partial cylinder for engaging the vibrator-gears for moving the shuttle-boxes, one of said two cylinders on the same shaft being adjustable with relation to the other, so that the teeth of one cylinder may be set ahead of the teeth of the other cylinder, that the different steps in the operation of the loom may be taken at just the proper times in the rotation of the crank-shaft, the object being to close the shed as quickly as possible after the passage of the shuttle through the shed.

In fancy-looms the box-motion picking and protection must always work in perfect agreement, their operation taking place in the proper order during a definite portion of the cycle of operation of the loom but the time in which the shed is opened and closed varies for the best results according to the particular class of weaving that is being done. As this class of loom is now made it is possible to set the teeth of the partial cylinders controlling the shedding only from four to five teeth ahead of the teeth of the partial cylinders instrumental in actuating the shuttle-boxes, because of the construction of the pattern-carrying means or the means employed for moving the pattern surface or chain that by their protuberances control the operation of the shed-forming means and the shuttle-boxes. To provide for the widest possible range of lead of these teeth when the loom is employed for fancy weaving, I have devised a novel pattern-cylinder wherein the part thereof sustaining the shuttle-box pattern surface or chain is so sustained with relation to the part of the pattern-cylinder sustaining the shed-forming pattern surface or chain that one of said surfaces or chains may be set ahead of the other, that the shed-forming mechanism and the shuttle-bozies may follow in their operation as may be desired.

As I have herein chosen to illustrate my v invention there is a loose or slot open connection between the part of the pattern-cylinder carrying the shed-forming pattern surface or chain and the part of the pattern-cylinder sustaining the pattern surface or chain for shifting the shuttle-boxes, and by changing the length of the slot the distance that one pattern surface or chain shall lead the other may be determined, and when the patterncylinder for effecting the shedding is reversed, as when finding a mispick or correcting other fault, the shed-forming patternchain will take converse positions on the reverse movement, so that it will lead, as when moving forward and weaving is being done.

Figure 1 shows in elevation and section a sufficient part of a loom of the class described with my invention added to enable my invention to be understood. Fig. 2 shows the boxmotion partial cylinder detached. Fig. 3-

shows the two partial gears arranged end to end on a shaft. Fig. 4 shows my novel pattern-cylinder or parts for sustaining the pattern surface or chain. Fig. 5 shows a section on the line 33', Fig. 4, looking to the right. Fig. 6 is a section on the line :6 Fig. 4; and Fig. 7 shows the shaft carrying the shedforming pattern-surface as having been reversed, so that it will lead the shuttle-box pattern surface or chain.

In the drawings the shed-forming partial cylinders A B, carried by the shafts A B, and the box-motion partial cylinders 0, one on each shaft A B- and secured to said shafts, and the partial cylinders A B, with those of their teeth first to act set more or less behind the leading teeth of the shedforming partial cylinder, the vibrator-gears D, pivoted on the fingers D, having their fulcrum at D on the head-motion frame E, and the harness or shedding levers E, pivoted at E and joined by the connection with said vibrator-gears, are and may be all as usual in looms nowvcommonly in use. The partial cylinders may and will in practice be rotated continuously by means common to this type of loom. The part F of the pattern-cylinder (it having notched disks (0 to contain the bars a of the pattern-chain, said bars having suitable rolls or actuators a a is and may be common to the patent referred to, showing one 100111 of the type to which my invention is applicable, and this shaft F may be rotated either forwardly or backwardly, as when the loom is weaving cloth or when the parts are being moved to find a shed in which a fault occurred in weaving by the gearing shown in Figs. 3 and 6 of said Patent No. 274,914 acting on a toothed wheel fast on the end of said shaft. Said wheel is designated by the num ber 15 in said patent and by the same num* ber herein; but herein said wheel is but partially shown. The parts so far referred to specifically are and may be all as usual.

In accordance with my invention I provide a sleeve G, it having notched wheels G, that receive the usual bars 5 of a chain having rolls or protuberances b, that operate in determining the selection of the shuttle-boxes. This shuttle-box chain may be all as usual. This sleeve is shown as applied loosely to the shaft forming part of the pattern-cylinder F. The inner end 'of the sleeve Gr, forming, with the notched plates GG, the shuttle-box pattern-cylinder, is shown as prolonged to abut one of the notched plates (1, and the prolongation has a collar 9, that receives a pin or screw g, the inner end of which enters a circumferential notch 2 in the shaft F, thus making a pin-and-slot connection between the two pattern-cylinders, so that one of said cylinders, as F, which by the ends of the notch 2 contacting with the pin g becomes the driver for the cylinder G, may be started and be rotated for a greater or less distance, that depending on the length of the notch 2, without moving the other cylinder. In this way provision is made for starting one cylinder before the other, so that one cylinder may lead the other more or less.

Fig. 6 shows the shoulder at the right-hand end of the slot as contacting with the pin g, as when. the pattern-cylinder F is being moved forwardly by the means referred to and common to said patent.

Fig. 5 shows how the notched plate a of the cylinder F leads the notched plate G of the sleeve G.

Fig. 7 shows that the cylinder E has been reversed, as customary when a mispick or other fault occurs in the weaving that has to be rectified by the weaver, and it will be seen that the left-hand end of the notch is in contact with the pin, in which position it will be understood that the shed-forming chain carried by the pattern-cylinder F leads just as it does when the parts are in the position for regular weaving, as in Figs. 5 and 6.

By connecting the two pattern-cylinders loosely or providing a definite amount of lost motion between them it will be seen that one cylinder and its chain will lead the other in whichever direction the positively-driven cylinder, as F in this instance, is being turned an d that whenever the direction of movement of the positively-driven cylinder is changed it automatically changes its position with re lation to the cylinder driven by it, so as to lead the cylinder, as G, whatever the direction of rotation of the cylinder F.

I consider that I am the first to combine two pattern-cylinders, one having a pattern surface or chain for controlling the time for forming sheds with a pattern-cylinder having a pattern surface or chain forcontrolling the order of movement of a series of dropboxes whatever the specific construction of the pattern-cylinder, so that one chain is so connected with the other that one chain will always lead the other in whichever direction the chains are moving, and I desire to claim this feature broadly.

I have not shown the harness-frames that will be connected by cording with the notched jacks or levers E, nor have I illustrated any sh.uttleboxmoving mechanism; but it will be understood that I may employ any usual drop-box-moving mechanism. common to fancy-looms having partial cylinders, and it will also be understood that the partial gears C, one on each shaft A B, will have placed between them vibrator-gears like the gear D and that said vibrator-gears will be sustained and connected with levers forming part of shuttle-box-actuating mechanism, all as common to looms of this type.

I have provided the head-motion frame (see Fig. 1) with a friction-check (shown as a spring f) that in practice acts on the outer end a of the sleeve G and prevents the rotation of said. sleeve except when the pin meets one end of the notch 2. This is necessary for in case a bar of the shuttle-box pattern-chain should come next the fingers carrying the vibrator-gears instrumental in moving the drop-shuttle boxes and the pattern-cylinder F should be turned the sleeve G would be turned with the cylinder F but with the friction device the sleeve cannot turn except when moved positively.

In my invention the pattern-cylinder F is rotated continuously through the gear on its shaft, and I am enabled to adjust the leading teeth of the shed-forming partial cylinders for any desired distance in advance of the teeth of the partial cylinder for moving the shuttle-boxes, and I am also enabled. to dis pense with the usual fast and slow drivinggears employed for actuating the patterncylinders at a variable fast or slow speed, which is of great advantage, as by running the pattern-cylinder at a uniform speed all jerking of the chain is obviated and no slack chain is formed.

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

1. In a loom supplied with a pattern-sur face used to operate the harness-jacks, and a pattern-surface used to call different cells or drop-boxes into operative position, means to adjust said pattern-surfaces that one may lead the other, and means when said patternsurfaces are to be reversed to insure that the same pattern-surface continues to lead.

2. In a loom having shuttle-boxand shedi'orming pattern-chains, a shaft to sustain the shed-forming pattern-chain, a sleeve to sustain the shuttle-box pattern-chain, and connections between said shaft and sleeve, whereby one chain may be set ahead of the other, and when the chain is reversed the same chain will lead the other, thus maintaining the existing relation between the two chains.

3. In a loom, a shed-forming pattern-cylinder having a pattern-surface, combined with a drop-box pattern-cylinder having a pattern-surfacerotatable about the longitudinal axis of the shed-forming pattern-cylinder, and means to insure automatically that one of said pattern-cylinders leads the other of said pattern-cylinders in whichever direction said cylinders are rotated.

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

JOHN R. FITTON.

Witnesses:

GRACE A. BEMIS, CHARLES F. ALDRICH.