US1273610A - Tenter-clip. - Google Patents

Description

1.]. HOEY.

TENTER'CLIP.

APPLICATION FILED 050.2.1915.

1 ,27 3 ,6 1 O. Patented July 23, 1918.

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ATTORNEY UNITED STATES PATENT ornron.

JOHN J. HOEY, 0F PROVIDENCE, RHODE ISLAND.

TENTER-CLIP.

Application filed December 2, 1915.

To all whom it may concern:

Be it known that I, JOHN J. HonY, a citizen of the United States, residing at Providence, in the county of Providence, State of Rhode Island, have invented certain new and useful Improvements in Tcnter-Clips, of which the following is a specification.

My invention relates to tenter-clips or cloth-clamps for use on tenteringanachines employed in finishing textile materials and consists of improvements in the construction and arrangement of the clamping jaws thereof. The object of my improvement is to provide the clip with a self-adjusting working-blade on the. movable jaw arranged to be easily removed for sharpening or replacement, and a detachable surface-plate on the fixed jaw adapted to be reversed in position to give longer wear and to be replaced at slight expense.

The manner and means for carrying out my improvements are fully described in the following specification, illustrated by the accompanying drawings, in which like reference characters designate like parts. In the drawings Figure 1 is a front elevation of my improved tenter-olip;

Fig. 2, a sectional view of the same taken on the line XX of Fig. 1, looking in the direction indicated by the arrow as;

Fig. 3, a perspective view of the self-adjusting, removable work-blade for the swinging clamp-jaw;

Fig. 4, a part-sectional elevation of the swinging jaw showing the means for adjustablymounting the work-blade thereon;

Fig. 5, a perspective view of the springclip or detent for the swinging-jaw blade;

. Fig. 6, a View in perspective of the reversible face-plate for the fixed jaw; and

Fig. 7, anenlarged, cross-sectional view through the fixed jaw of the clip, illustrating the method of securing the face-plate thereon.

Referring to Figs. 1 and 2, B designates the main frame of the clip which is formed with a base I) and two upstanding, overhanging arms Z), Z). The lower portion of the base 6 of the clip is constructed as a link 12 adapted to be coupled to adjacent links to form an endless chain which travels on sprockets at the ends of the tenter-frame.

At thefo-rward end of the base I) is a horizontal ledge 6 serving as the fixed aw of the clip and on which the cloth rests to be Specification of Letters Patent.

Patented July 23, 1918.

Serial No. 64,764.

clamped thereto at its selvage. Extending through the ends of the overhanging arms I), I) is a rod or hinge-pin R on which is pivoted the swinging jaw-member C. The jaw C is usually constructed with a lower hoe-like blade-portion formed with ears 0, 0 at its top bored to receive the ends of the hinge-pin R which support it pendant therefrom to adapt its lower edge to cooperate with the upper face of the fixed jaw of the clip. Usually the jaw Cjis ground off on a bevel to sharpen its edge so that it willbite on the fabric and, as shown in Fig. 2, the jaw is hung in such position that the pull on the cloth causes it to operate with a doggingaction to clamp the selvage against the fixed jaw. Heretofore it has been the usual practice to form the sharpened edge directly on the jaw C, but in grinding down the edge it is dillicult to make it aline properly with the face of the fixed jaw to provide an accurate engagement between the two. The working edge of the swinging jaw soon becomes dulled tt'rom constant use,-especially when operating on hard fabrics, and it is necessary to remove it frequently for regrinding and in some cases for replacement with a new jaw. In my present improvement I propose to construct the swinging jaw C with a removable working-blade which may be readily detached therefrom for regrinding its edge and which is mounted on the jaw to adapt it for self-adjustment to allow it to properly aline its operating edge with the face of the fixed jaw when the two are brought into engagement with the cloth.

Referring to Figs. 2 and 4, the movable jaw C takes the same conventional form as jaw instead of being sharpened to-bear' thereagainst. F astened to the rear side of the jaw U is the self-adjusting work-blade 1) shown in detail in Fig. 3, preferably construcled of sheet-metal, hardened and sharpened on its lower edge. Usually the blade D is ground off on a bevel to sharpen its lower edge and in some instances a series of V-shaped cuts are made in the edge to divide it into teeth as shown in Figs. 3 and 4. The top of the blade D fits into slots 0, 0' cut up into the raised portions of the ears 0, c of the jaw-member C, see Figs. 1 and 2, and at the center of the jaw G is a crown-like enlargement 0 also slotted at c from the enlargement is a lug or arm of corresponding to the ears 0, 0 and likewise bored to receive the bearing-rod R. The

- slot 0 in the enlargement 0 is formed with a circular milling-cutter to provideia curved arch-like face 0 see Fig. 4:, which serves as the bearing for the blade D. Referring to Fig. 3, the blade D is provided at its top with a projection (Z, the upper rounded edge d of which corresponds to the arched bearing face 0 on the jaw C, see Fig. 4. A slight clearance is provided between the straight portions on the'top of the blade D and the inner edges of the slots 0, 0, see Figs. 1 and 4c. in this manner the projection (Z- is made to serve as a rocker bearing for the blade D so that the latter is free to rock 'turbing the engagement of the clip the upward thrust ofthe blade. E merely serves as a detent to hold the slightly 011 a transverse axis located at the center of the radii of its curved edge cl.

On the back of the arm a? is a spring-clip or detent E for the blade D, shown in detail in F ig. 5, preferably formed of sheetmetal and held in place by a rivet e. Adjacent its lowerend the'clip E is stamped out with a convex protuberance or semi-spherical enlargement 0 adapted to yieldingly engage the beveled edge of a small hole (Z in the blade D. The hole (Z is located at the center of the radii of the curved edge (Z of the projection (Z so as to allow for the rocking movement of the blade without distherewith. The clip E therefore acts to hold'the blade D. in position on the jaw 0 without interfering with its rocking motion. It is to be'understood, however, that the clip itself does notact as a pivot for'the blade D, but on the contrary the arched surface 0 on the jaw C-and the curved edge d of the blade provide the rocker-bearing to take The. clip blade in place in its slotted bearings and when it is required to remove it for repair or replacement it is only necessary to spring the projection '6" out from the hole d and the blade can then be withdrawn from the jaw C. I

' Referring now to the mainframe of the clip, as shown in Fig. 2 a flat sheet-metal plate F is riveted to the top of the base I) and overlaps the front ledge b to which it is secured by rivets f. On its front edge the plate F is formed with v an undercut bevel surface 7, as shown most clearly in the enlarged view, Fig. 7. Securedto the front of theledge b by means of the screws 9 is a clamping-bar Gr also formed with an overhanging 1 beveled surface 9. Seatedon the top'of the ledge]; is the sheetmetal surface-plate H, shown in detail in Fig. 6. Both longitudinal edges of the plate H are formed with opposite bevels h and h, or in other words,the sides of the plate new bearing surface.

becomes too worn for further use it tightening thebarG against the ledge bi.

By loosening the screws 9 the plateH may be released to allow for its removal from the 'clip for repair or replacement. It will be noted from Fig. 2 thatthe sharpened edge .of the work-blade D on jaw C engages the face of the plate H on a line slightly to one side of its center, that is to say, off center). This provides that when the plate H be-' comes marred or a groove is worn inits' surface through the contact therewith of the'sharpened edge of the blade D the plate i may be reversed in position to provide a Tnother words, the

plate maybe removed and turned com-'.

pletely around so that the jaw-blade D- will bear on it at a pointon the opposite side of 2 its center. WVhe-n the blade D becomes worn at both bearing points on one of its sides it may be. taken out and turned 'over,.and then again reversed in this position so that four bearing surfaces are made available to provide for the maximum wear. After the plate becomes badly worn on both of its 7 faces it may be replaced at very little expense thus avoiding the necessity ;of discarding the whole clip. 7

It will be observed that my invention provides an improved tenter-clip having a self-adjusting clamping jaw adaptedlto effect a firmer and more secure grip on the selvage of the fabric and also arranged for" I more convenient removal for sharpening its working edge.

swings into position to grip the fabric it automatically alines its gripping; edge with the face of the fixed jaw so that the. cloth will be held smoothly and evenly therebetween with a maximum clampingeifect.

-The work-blade of thejaw'beingof sheeh metal, such as steelor bronze,it can be man ufactured at relatively slight cost, besides j adapting it to be hardened toprovide} for longer wear.- When the blade of the jaw maybe When the movable jaw iio 7 replaced at much less expense than if it were required to replace the whole jaw. :In the same Way my improvement alsoadapts the providing for its replacement atrelatively slight expense. The reversible plate H'be; ing constructed hardenedand ground to atrue surface, tend ing to reduce'its cost of manufacture befixed jaw of the clip for longer-wear, besides of sheet-metal maybe easily sides increasing its efficiency and durabilityg I-Ieretofore,-it has been necessary to throw away the whole frameof thetclip whenthe.

fixed jaw became too badly worn for further use, but with my present improvement the main parts of the clip are never worn out, but on the contrary may be used indefinitely.

Various modifications might be made in the construction and arrangement of the parts of my 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 tenter-clip, the combination with a frame provided with a fixed jaw, of a movable jaw pivoted on the frame in pendant relation to the fixed jaw, a work-blade rockably mounted in a slot on the movable jaw to adapt it to oscillate on a central axis to aline its lower edge with the face of the fixed jaw, said blade formed with a depression coincident with its axis of oscillation, and a detent-clip formed with a projection adapted to engage the depression in the work-blade to hold the latter in position on the movable jaw without restricting its oscil lating movement while allowing it to be removed therefrom for repair or replacement.

2. In a tenter-clip, the combination with a frame provided with a fixed jaw, of a movable jaw pivoted on the frame in pendant relation to the fixed jaw, a work-blade mounted in a slot in the movable jaw with its upper edge bearing against the top of the slot to adapt it to rock slightl to aline its lower edge with the face of tie fixed jaw, and a spring detent-clip for maintaining the blade in position on the movable jaw while allowing it to oscillate in relation thereto.

3. In a tenter-clip, the combination with a frame having a fixed jaw, of a movable j aw hinged on the frame in pendant relation to the fixed jaw and formed with an arched bearing-face, a work-blade formed with a curved edge fitted to the arched bearing-face of the movable jaw to take the thrust of the blade thereagainst, and a detent-clip engaging the blade to maintain it in position on the movable jaw while allowing it to oscillate to aline its edge with the face of the fixed jaw.

4. In a tenter-clip, the combination with a frame formed with a horizontal ledge and overhanging bearings, of a relatively thin, flat face-plate mounted on the ledge, means to fasten said face-plate to the ledge to adapt it to be reversed in position side for side and top for bottom, and a movable jaw mounted in the bearings on the frame to adapt its lower working-edge to swing into engagement with the face-plate on a line at one side of the center of its face.

In a tenter-clip, the combination with a frame having a base and overhanging bearings, of a swinging jaw pivoted to said bearings, a face-plate formed with both of its longitudinal edges reversely beveled on opposite sides, and overhanging beveled shoulders on the base of the frame adapted to engage either set of bevels on the faceplate to secure the latter in position while allowing it to be removed to reverse it in position side for side and top for bottom.

6. In a tenter-clip, the combination with a frame formed with a horizontal ledge having an overhanging beveled shoulder, of a clamping-bar formed with a beveled shoulder arranged opposite to the shoulder on the lodge, a face-plate formed with beveled edges fitted to the shoulders on the led e and clamping-bar, and means to adjust the clamping-bar on the ledge to secure the faceplate thereto while providing for its reversal in position in relation to the swinging jaw of the clip.

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

JOHN J. HOEY.

WVitnesses:

HERBERT K. ALLARD, GEO. A. WHITE, Jr.

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

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