US1191512A - Cloth-clamp for tentering-machines. - Google Patents

Description

1.1. HOEY.

CLOTH CLAMP FOR TENTERING MAIIHINES.

APPLICATION FILED DEC. 2 I915.

Patented July 18, 1916.

UNITED STATES PATENT OFFIQE.

JOHN J. Irony, or r novrnmycn, nnonn rsnnnn.

QLOT-PH-QLAMP roe T Ea NG-MMHI'NES- S pecification of Letters l atent.

Patent July 8 9 Application filed December 2, 1915. Serial No. 64,263.

hingedly mountinglthe movable jaw on the clip.

The object of my improvement is to provide for hinging the swinging in such manner that it may be more conveniently and easily removed for repair or replace ment without requiring the disconnectionof the clip from the chain of which it forms a part, or without necessitating-moving the chain to bringithe clip into position on the end sprocketswheel so that it can -be,dis-

placed from alinement withthe otherclips in the series.

The manner and means for carrying out my improvement are fully described in the following specification, illustrated bythe accompanying drawings, in whi h like 'reference characters designatelike parts.

In the drawings Fig1 re 1 is a side, elevation of my improved tenter-clipshowingthe arrangement for hinging the movable jaw on the frame of the clip; Fig. 2, afront elevation of the same illustratingthe manner in which the clips are linked [together in an endless chain; Figs. 3"and 4, detail views showing ,amodification in the form of the jaw-hinging meanstand -'Figs.,5 and .6, detail views showing a still further modification ofthe invention.

Referring to the drawings, the main .elements, of the clip;here illustrated are of well known construction as generally employed in this art,-but.it is tobe understood that my. improvement is. adaptable-to otheriforms of clips with only slight modificationsin its structure. The clip here shown comprises the main frame C formed with atbase por-' tion'having a lower shelf-1ikejaw-member J and two upstanding arms 0,0 overhanging the top of the jaw. Ateither side; of the frame Care suitable lugs or tongues 25,2? adapted to be ,fitted in .malerand-female fashion to correspondinglyformed tongues on adjacent clips tov ink them tog her 1 as an necessitates the completelongitudinal withendless chain as shown in Fig. 2. The clips are coupled together ,by means of suitable hlngepins 79,19, etc, and their under portions are provided with openings 0 adapted to receive the teeth of the sprocket-wheels around .which the chain of clips travels.

Usually two sprockets areprovided for each,

chain, arranged at opposite ends of the frame on which the chainjtr avels in the well known nne usually empl y d i n w ing-machines Pivoted at the ends of the overhanging arms a, c is the movable jaw B arranged in pendantrelation to the main frame of the clip with its lower, sharpened edge Z2 adapted tobear outhe top of the fixed jaw J. The fabric isinsertedbetween the jaws J andBas it is pulled out away from the clip ts se'lvage is gripped and held by the dogging action of the movable jaw B in the usual manner. The movable jaw ;B is

f rme w t ups and s arso ns 6 adapted to straddle theends of the arms c, c, to be hinged thereto by means of a -p vot-1 n o 7 B n r. ed t re h ug ere fo n all rrangemen of ip generally employed intheart the pivot-pin is merely inserted, through suitable holes in the armso, 0 and lugs b, b andheld in place y a Qtt r'-p n.' her s m l r a t ni g- Such a a ngeme h drawal of the pivotpin beforethe jaw 13 can be removed andtherefore requiresthat theclip be displaced from alinement with the other clips in the chain. It will be noted from Fig. 2 that theclipsare linked together in close relation so that when the chain is stretched out along the frame of the machine there is not sufficient room between the clips, to draw out one of the pivot pins whichholdthe movable jaws in place. It 3 is frequently necessary to remove the Y jaws for grinding-their, operating edges, .or to replace them when they become. too badly 'worn or-broken. VVith theusual arrangement of pivoting-means, as above described,

whe ib ome .l ces eryt0 tak u n of the jaws either the whole clip must be detached from the Chainor else the chain nn st be-traveled along-the frame until the clip to bejoperated upon is'brought into.

position on the end-sprocket. Tha is to say, the usual practi'cefis. to travel the chain along therframe until the clip to be repaired K d-'9 in the. endspmcket, and this-Will cause it to be rocked to displaceit from alinement with its adjacent clips. This allows the pivot-pin to be slid its whole length out from the bearings, but often the clip which requires repairing is at a considerable distance from the end-sprocket when the chain stops and this necessitates starting the machine up again or turning the sprockets by hand. This is often very inconven ient especially if the cloth is in the machine, and in any event the operation requires considerable time and effort which it is desirable to avoid. To obviate this necessity of displacing the clips from alinement to allow the removal of the pivot-pin I have devised an ingenious method of mounting the pin in its hearings to provide for its lateral withdrawal as next described:

Referring to Fig. 2, the right-hand arm 0 of the clip C is here shown as being slotted at s on its front to allowthe lateral displacement of one end of the pivot-pin or rod R after its opposite end has been withdrawn from the other bearing 0. As illustrated in Figs. 1 and 2 the bearing hole in the arm 0 is boredv somewhat larger than the diameter of the rod R and a bushing D is inserted in the bore to receive the rod. To hold the rod R in place in its bearings the arm 0, bushing D and rod R are pro-' vided with alining holes it through which a cotter-pin E is inserted, see left end of Fig. 2.

Fig. 2 illustrates three adjacent clips linked together in alinement with the central clip C shown with its jaw B ready for detaching. The removal ofthe jaw B is accomplished as follows: The cotter-pin E is first drawn out from the hole 71 and the bushing D is then slid to the left beyond the side of the bearing 0". The rod R is next drawn out to the right, as shown in connection with the central clip C in Fig. 2, to bring its left-hand end clear of the bearing 0. The pin or rod R can now be drawn out laterally through the slot 8 in the arm 0 and the jaw B is thus removed clear of the frame of the clip C. To replace the jaw B it is only necessary to slide the rod R through the lug b of the jaw B and through the bushing D, and to then slip the rod through the slot 8 in the bearing 0. The several bearings 6 0, 0 and D are then brought into alinement While the rod R is pushed through the bearing 0 and lug Z2 and the bushing D slid into the enlarged hole 0 in the bearing 0'. By turning the rod and bushing their transverse holes may be brought into alinement with the hole in the bearing a to allow the insertion of the cotter-pin E to secure the several parts in place.

In Figs. 3 and 4 I have illustrated a somewhat simpler and preferred form of the invention as now. described: In this modification the bushing D is dispensed with and the bearings 0 and c are both bored to the same diameter to adapt the sliding o1 turning in the beaimgs c, o by means of the cotter-pin E, as before described, and to remove the rod it is only necessary to withdraw the pin to allow the rod to be slid to the right. As soon as its left-hand end is drawn clear of the bearing 0 its flatted portions 1", 1' will have been brought into alinement wit-h the bearing (1 and the rod can then be drawn out through the slot 8'. Instead of having its side flatted off at 1", 7' the rod R might be turned down to a less diameter at this point to allow for its withdrawal through the slot 8.

In Figs. 5 and 6 I have illustrated still. another embodiment of the invention in which the parts are constructed as follows: As shown in Fig. 5 both bearings c, c are slotted on their sides at .9 s and the rod R is formed with two flatted portions 1", r and r 1' at its ends. With this arrangement the rod may be slipped into and out from the bearings 0, 0 without any endwise movement thereof. WVith the rod R in place in its bearings as shown in Fig. 5 it is turned to bring its rounded portions in position at the top and bottom of the bores in the arms 0, 0 and its transverse hole 71. will then aline with the vertical hole It in the arm 0, see Fig. 5. The cotter-pin E is then pushed down through the holes h, h to prevent the rod from turning and to also secure it from longitudinal displacement. By withdrawing the cotter-pin the rod may be turned to allow for its lateral movement out through the slots s 8 While this arrangement provides, possibly, the most convenient method for removing the rod R and the jaw B, in some respects it is not as practical as the construction shown in Figs. 3 and 4 because the rod'is weakened somewhat by the flattening of its sides and furthermore does not have as full a bearing in the arms 0, 0'. However, it will be seen that this construction accomplishes the purpose desired and therefore it may be substituted for either of the other forms of the invention as shown.

It will be observed that with any one of the above described arrangements the movable jaw B may be removed from the clip C Without withdrawing the pin or rod It clear through the bearings 0, 0. That is to say, the rod may be freed from its bearings in the clip by a lateral displacement without interference with the adjacent clip in the chain. As shown in Fig. 2 the arrangement of the clips when linked together in the chain is such as to provide sufficient clearance for a slight movement of the rod B, so that it is not necessary to displace one clip from alinement with the other. My improvement therefore provides for easy and convenient removal and replacement of the jaws of the clips without disconnecting the latter from the chain or without requiring the slow, laborious work of traveling the chain to bring the clip to be operated upon into position on the end-sprocket.

Various modifications other than those here shown might be made in the construetion and arrangement of the parts of my improved device without departing from the spirit or scope of the invention.

Therefore, without limiting myself to the exact embodiment shown, what I claim is 1. In a cloth-clamp for tentering-machine chains, the combination with the frame of the clamp provided with bearings, of a hinge-pin mounted in said bearings, means to allow the hinge-pin to be withdrawn laterally from the bearings, and a movable jaw pivoted on. the hinge-pin to adapt it to be removed therewith for repair or replacement.

2. In a cloth-clamp for tenter-chains, the combination with the frame of the clamp provided with bearings having alining bores, of a hinge-pin mounted in said bearings to allow for its lateral withdrawal from the frame, a movable j aw-member pivoted to swing on the pin, and means to secure the hinge-pin against displacement from its bearings.

3. In a cloth-clamp for tenter-chains, the

combination with the frame of the clamp provided with a fixed jaw, of a hinge-pin mounted in a slotted bearing on the frame to allow it to be withdrawn laterally therefrom, means to securethe pin against displacement from the bearing, and a movable jaw pivoted on the pin to adapt it to cooperate with the fixed jaw to clamp the cloth thereagainst. I

4. In a cloth-clamp for tenter-chains, the combination with the frame thereof provided with arms having bearings at their ends, and one of said bearings slotted through its side, of a hinge-pin mounted in said bearings and formed with a portion of reduced thickness to adapt it to be withdrawn through the slot in the. bearing, means to secure the pin against displacement from its bearings, and a movable jaw pivoted on the hinge-pin to adapt it to swing on the frame. V

5. In a cloth-clamp for tentering-machines, the combination with a fixed-jaw member and a movable-jaw cooperating therewith, of hearings on the fixed-j aw member provided with alining bores and one of said bearings having a transverse slot cut through its side, of a hinge-pin extending through the hearings to support the movable jaw in pivotal relation to the fixed jaw, means for securing the hinge-pin against displacement from the bearings, and means whereby the hinge-pin may be withdrawn laterally from the slotted bearings after its end has been slidfree from the other bearmg.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN J. HOEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). 0.

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