US372920A - Terry-loom - Google Patents

Description

(No Model) l Y s sheetssheet i.

` F. L EAKE.

TERRY LOOM.

Patented Nov. 8, 1887., l l I I'IWI I my IIIIIIIIIIIIII 1 l ,-e- I 'L88 8'* W.

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(No Model.) A3 Sheets-Sheet 2.

P. LEAKE.

(No Model.) .-3 Sheets-sheet 3.

F. LEAKE.

TERRY LOOM.

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'Patented Nov. 8, 1887.

UNITED STATES PATENT OEErcE.

FRANK LEAKE, OF PHILADELPHIA, PENNSYLVANIA.

TERRY- LOOM.

SPECIFICATION forming part of Letters Patent No. 372,920, dated November 8, 1887.

.To all whom, it may concern:

Be it known that I, FRANK LEAKE, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Terry-Looms; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention is an improvement in looms designed'for weaving terry cloths and pile or looped fabrics of all kinds, and relates especially to mechanism for automatically controlling the putting on and off of the terry pile or loop, so that a fabric of any desired pattern may be produced.

My invention is applicable to the form of terry motion shown in Letters Patent granted to J. and G. Rothwell, No. 257,517. In this ldevice the lay is so controlled that in a certain number of beats thereof the vmovement willnot be up to the cloth-making line, but each successive pick of filling thrown in during this time will be beaten closely against the pick just preceding. The next beat, however, after the required number of picks have been made and the intervening portions of the terry-warp threads, which are drawn from a loose roller,

are caused to rise or pucker, forming the pile or loop of the lterry fabrics in the usual manner. To effect these movements an eccentric is employed for the bearing of the crankshaft, which is turned through suitable connections to alter the position ofthe lay crankshaft forward and backward to vary the amount of the beats at the proper moment. In the latter position the lay beats only partially up, while in the former the beatvis all the way. These movements follow each other alternately to form the terry, as mentioned.

In the accompanying drawings, Figure 1 is a plan view of so much of a terry-loom as is necessary for a full understanding of my improvement, a portion ofthe lay being broken away in order to show the devices situated directly beneath the same. Fig. 2 is a section on line a: w of Fig. 1, the mechanism shown being adapted to weave a fabric of regular pattern, and the parts being in position to form the terry. Fig. 3 is a similar view with the mechanism in position to complete the terry or continue the weaving plain, and thus miss Application filed October 6, 1886. Serial No. 215,434. {No model.)

a terry. Figs. 4 and 5 are views similar to Figs. 1 and 3, showing the manner of applying the mechanism employed for weaving a fabric of variable pattern. 4 In the drawings the main frame of the machine is shown at A A. rIhe lay B is pivotally connected to the frame at its lower end, and is operated in the usual manner from the crank-shaft C. This shaft is journaledeccentrically in bearings B', so that movement of the said bearings within their boxes will affect the position of the crank-shaft and the amount of beat of the lay, according as the movement of said bearings be forward or backward.

VThe mechanism for operating the eccentric is substantially the same as shown and described in said patent, and may be briefly described as follows: An arm, O, secured to the eccentric, is connected through rod P to an arm, N, of a rock-shaft, L, journaled in the rear of the frame. An additional arm, I, of the rock-shaft is, through the intermediate link H, actuated by a lever, G, pivoted to the girt A. An arm, 1,. depending from this lever receives one end of a powerful spring, M, the opposite end of which is attached to the frame of the machine. It'will be clearly seen that the force of the spring exerted upon the arm 1, will (when not resisted) actuate thelever G and throw it to the limit of-its upward movement, which action will, through the intermediate connections just described, move the ec centric to its backward position, thus permitting the lay to make only partial beats up. The movement of the parts is limited by the lever striking the projecting end of the auX- iliary cam-shaft e. formation of the terry, it is necessary that the lay should make apfull beat to the cloth-makl ing line after a specified number of picks have been thrown in, and for this purpose the eccentric is given a forward movementjust before the lay moves on its beat to drive all the picks home and cause the terry-warp threads to rise and form loops. A cam, e', on the shaft e acbeat.

In order to complete the IOO in Fig. 2,

cam upon the lever G effects the weaving of the terry piles or loops continuously. lapply my automatic devices to act upon thelever G, so that the force exerted by the spring to throw the eccentric to its rearward limit after the completion ofthe terry may be resisted in order that the parts may remain in their forward position, so that one or more terry-loops can be missed, as desired, to produce the pattern..

lhave shown in Figs. 1,2,and 3 pattern mechanism designed to make and miss aterry, and thus weave a regular pattern, and iu Figs. 4 and 5 is represented mechanism capable of producing a variety of designs, and in which the recurrent sections of terry and plain weaving may be of different sizes. if desired. I will proceed to describe first the simpler construction, so as to lead to a better understanding of the mechanism last referred to.

rlhe lever G is provided with an extension, which has formed in its end a notch adapted for the reception of the pawl l', pivoted on one side of the girt A of the machine. This pawl is controlled by the pattern mechanism now to be described. D is the pick-shaft of the loom, to which power is applied in the usual manner. Upon it is keyed a pinion, 2, through which and the gear 3 is driven the cam-shaft c. lnasuitable bearingformed upon the girt and opposite the gear 3, Fig. 3, is journaled a. pattern gear-wheel, lt, also driven by the pinion 2. A lever, 5, is pivoted to a suitable standard on the girt at a point near the upper periphery of the wheel and in convenient position to be struck by a pin, (i, on one of the pattern-wheel spokes. The lower end of the said lever is connected by means of the cord or wire 7 to a second lever, or, placed ou the floor, and from this lever connection is made to the pawlthrough cord or wire 8 and arm 9. A spring of suitablestrength is placed in the connection 8. It will be understood that when the lever G is in thepositiou shown and the pin on the gear 4 is not in engagement with the lever5,thepawl will then be held by a suitable spring in its normal position-thatis, directly in thepath of the end of arm K-and as the said arm is raised, in consequence of the cam on shaft e operating to throw theeecentric forward for the full beat of the lay, the end of said arm K will strike the pawl, ride over the same by reason of the spring l() giving, and be caught and held as the cam completes the depression of the lever.

. This will cause a terry-loop to be missed, and

the weaving will be plain until the revolution of the gear 4 causes the pin to act upon lever 5 and throw thepawl from engagement with the arm K, when the spring M will act and the parts be returned to form the terry. The picking-shaft D carries two arms, which act alternately to operate the pickers at the opposite ends of the lay inthe usual manner. The shaft c makes one revolution to one and a halfrevolution of the pick shaft, and it will thus be seen that after each third piel; the eccentric will be thrown forward to make the lay beat home, and at the same time this movement is effected the pawl snaps into place and keeps the lay beating home after each piek. The gear 4 is timed to make one revolution to two of the cam on shaft c, and the pin is positioned so that the pawl will be disengaged simultaneously with the second movement of the cam to depress the lever, thereby permitting the parts to return to the former position for beginning the formation of the terry.

In Figs. 4 and 5 are shown Ithe devices del signed for a fabric different in design from that produced by the above mechanism. In this form the parts are so timed and the patternn chain will admit of so many variations that either a regular pattern, composed of a number of terries and a like sized plain portion may be woven, or a varying pattern, the sections of which may be composed of unequal numbers of terries. Motion is imparted to the catch or pawl K through the rope or wire and lever-connections, as above described, from a lever, y, supported pivotally at point l1 on the frame. This lever has a horizontal portion provided with a downwardly-projecting end, l2, adapted to be raised and lowered by the pins of a pattern chain, \V, The chain is suitably supported upon a wheel, w, having its bearings in the girt A in a manner similar lo that of the gcarwliee14. A pawlaud-ratchet mechanism is employed to actuate this chain. The ratchet is shown at 13 and its pawlatlst. A slidebar, 15, is used to carry the pawl, and is supported on the journal of the patternwlieel and at point 1G from the frame, being slotted, as shown, to permit longitudinal movement; Motion to the slide-bar is given in one direction by means of a cam, c2, 011 the shaft c aud the projecting arm 1S from the slideAbar. In the opposite direction the movement is effected by means of the spring 19. (Shown in Fig. 4.) Obviously the cam c? may be changed to operate the bar 15 both backward and forward by means of a cam-groove adapted to receive a pin from said bar or through the medium of a strap from the bar embracing the cam. rlfhese devices are, however, merely the equivalent of the cam and spring above described.

Suppose a fabric is to be produced, the pattern of which is composed of a number of terries woven without a miss, followed by a plainly-wovenl portion of fabric. In order to do this, it is necessary that the pawl K should be thrown out of the path of the end K of the lever G, when the said end is falling after the completion of the formation of theterrydoop, so that the terry motion will be continued without a miss, the position of the pawl K allowing the said end K of the lever to fall freely for this purpose. rEhe cam for operating the pawl slide-bar is arranged to act in unison with the cam for depressing the lever G, and it will thus be observed that the pat- IOO IIO

tern-chain makes one movement every time the said lever is depressed. Now, the pins of the pattern chain may be so positioned that as the end K of the leverG rises, a pin on the chain will act upon the end of lever y, raising'it, and through the connections throwing back the pawl from engagement with the notch. The number of terry-loops vsuccessively woven will of course depend entirely upon the position of the pins. Thus, if the pins are situated so as to act upon the lever y for each of ve successive operations of lever G and pawl 14, the catch K will not engage With the arm K during this time, and consequently five terry-loops Will be formed Without interruption. Upon reaching a space from which a pin has been omitted the lever will act to keep the catch in its normal position in the path'of the arm K, and upon the neXt rise of said arm the catch will hold the parts so that the lay will beat home and weave plain fabric, this operation continuing until another pin is brought into action. This lastdescribed mechanism can be used, ofcourse, to accomplish the same result as that effected by the irstdescribed form. In this case the pins of the chain are arranged to'actuate the lever once for each two revolutions of the shaft e.

It will be readily understood that the various details of connections, bars, arms, &c., between the essential operating parts can be varied as mechanical skill may dictate without departing from the spirit of my invention.

I claim as my inventionl. In combination, the lay, a crank -shaft connected to said lay by pitmen, movable eccentric bearings for said crankshaft, arockshaft, D, connections between said rock-shaft and the eccentric bearings, a lever, G, for operating said rock-shaft and connectionsbetween 4o the lever and shaft, means for operating the -lever G, a pawl held under tension for engaging of arms, links, 8m., substantially as de- 5o scribed, between the said lever and the movable bearings, a catch or pawl adapted to act upon said lever G, a pattern mechanism, a lever operated thereby, the connections 7 and 8, and the supplemental lever m for operating 55 the said pawl, all substantially as described.

3. In combination, the lay, the crank-shaft, the pitmen, the movable bearings for said shaft, the lever G, the cam e', for operating the same, connecting mechanism consisting of 6o arms, links, &c., substantially as described, between the said levers G and the movable bearings, the pawl or catch, the leverr, the connections between said pawl and said lever y, the patternchain, the pawl and ratchet, the 65 operating-bar y15, the spring and cam e2 there,- for, and the shaft e, the said cams e ande2 being arranged to act in unison, substantially as described.

In testimony whereof I have signed my name 7o to this specification in the presence of two subscribing Witnesses.

FRANK LEAKE. Witnesses: ALBERT W. Cox,

EDWARD S. MCINTYRE.

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