US1621177A - Poration - Google Patents

Description

Patented Mar. 15, 1927.

UNITED STATES PATENT OFFICE.

WALLACE I. STIMPSON, OF HOIEDALE, 'MASSACHUSETTS, ASSIGNOR T0 DRAPER COR- PORATION, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

LOOM TEMPLE ROLL.

Application filed August 14, 1926.

This invention relates to the construction of the pin roll employed in loom temples.

The object of the invention is to provide a temple roll of the pin type so constructed that the roll when functioning shall have a sufficient hold upon the fabric to maintain the fabric stretched and up to width without in any way injuring or marring the fabric. Thus the roll is adapted for use with a wide variety of fabrics including those of a fine or delicate nature and fabrics composed wholly or in part of artificial silk.

The object of the invention is further to provide such a temple roll in which the pin points shall project sufficiently to engage the fabric when pressed against the roll periphery and without injuring or marring the fabric.

The object of the invention is further to provide such a temple roll in which the pins may be inserted by the usual inserting tool without injury to the roll or the pin points and when desired, with the pin points projecting but slightly beyond the roll periphcry.

The object of the invention is further to provide a temple roll with the pin points projecting slightly, but sufficiently to engage the fabric, and with ribs also engaging the fabric and thus serving to assist the pin points to hold the fabric up to width.

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

In the drawings:

Fig. 1 is a top plan view partially broken away of an ordinary form of temple in position adjacent the fell of the fabric in the weaving operation and having a roll constructed in accordance with the preferred form of the present invention.

Fig. 2 is a front elevation on an enlarged scale of the end of the roll shown in Fig. l and a portion of the fabric engaged thereby shown in cross section.

Fig. 3 is a view in transverse section on an enlarged scale with the section of the roll taken centrally of one of the ribs.

Fig. at is a view similar to Fig. 3 with the section of the roll taken centrally of one of the grooves.

Serial No. 129,122.

Fig. 5 is a detail on an enlarged scale illustrating one of the pins and the lower end of an inserting tool.

A roll embodying the present invention is adapted for use in a wide variety of temples and may accordingly be made of different dimensions and supported in different ways in the temple. In Fig. 1 an ordinary form of temple, such, for example, as shown in the patent to Stimpson, No. 1,366,03 granted January 18, 1921, is illustrated as adapted for the right-hand side of a loom. Such a temple comprises a shank 1 having a laterally extending pod 2 and cap 3 between which the fabric l passes underneath the roll mounted upon journal pins, one of which, 5, is shown mounted in the temple head 6 and the other of which, not shown, is carried by the broken away portion of the cap.

The temple roll may be made of any suitable material, but is usually and preferably made of wood which has long been used for that purpose.

This temple roll 7 is of cylindrical shape and of a length and diameter depending upon the temple with which it is to be used. It is provided with a central axial bore 8 by which it is journalled on the supporting pin or plns.

In this invention the periphery of the roll is formed with alternating ribs and grooves. Preferably these ribs and grooves extend helically about the roll and, in the form illustrated as a preferred embodiment of the invention, the ribs 9 present one continuous helix and the intermediate grooves 10 another continuous helix.

The helical angle of the ribs and grooves may vary, but preferably should be such as to prevent the pins, when spaced to the desired extent, from tracking and thus successively separating adjacent warp threads.

The pins are usually of steel presenting cylindrical shanks 11 and conical points 12. They are inserted in the roll substantially radially thereof, but inclined slightly with respect to the longitudinal axis in a direction pointing away from the center of the loom. The outer element of each conical point stanc s preferably vertical and parallel with the end of the roll so that the point will enter and leave the cloth freely. These pins are usually inserted, in holes drilled in the roll, by means of an inserting tool. T he lower end 18 of such a tool fitting the conical pointed end f the pin is shown in Fig. 5.

In this inveutionthe width of the grooves 10 is determined by two factors. First, the width must be sulliciently greater than the diameter of the pin sh vnit en'iployed to enable the ribs 9 at each side of the groove to engage the fabric independently of the pins. This will be understood from Fig. 2, where the fabric 4- is shown stretcl'ied l "2 against the periphery of the roll and it will be seen that the ribs slightly indent the fabric and thus have a holding engagement on the fabric. Second, the width of the grooves must be such as to enable the nose or end of the insert ig tool 13 to enter the groove and thus embed lhe pin in the roll with the base of the conical point substantially central of the groove and with the pin point projecting accurately to the extent required to take hold of the fabric. The depth of the groove is governed by the same factors and is usually at the central portion, slightly less than the projection of the pin points.

Thus the pin, firmly gripped by the inserting tool, is readily forced into the roll without danger of injuring the roll and the conical point left projecting from the bottom of the groove with the extreme point projecting the amount necessary properly to hold the fabric being woven.

lVit-h this construction the pin points may be arranged to engage the fabricsufticiently to catch and holdit and without damaging or marring the fabric. At the same time an additional function is secured in that the ribs act independently of the pins on the fabric thus assisting the pins in holding the fabric stretched and up to the desired width.

The net bodily forward movement of the cloth with respect to the temple roll. at each cycle of movement of the la is very small, being only the width of a single pick of filli-ng although the total rolling movement of the roll forward and back on the fabric at each pick may be substantial.

T he helical ribs and grooves together ith the pin points or teeth, following the usual custom in which the pins or teeth are set in temple rolls helically are arranged with the helices of the ribs, grooves and lines of pin points extending in a right handed direct-ion for the roll employed at one side of the loom and in a left handed direction for the roll employed at the other side of the loom and this arrangement is reversed where the rabric runs over the roll from the arrangement where the fabric runs under the roll.

The fabric, being under considerable tension in the direction of its length as well as in the direction of its width, sinks somewhat into the grooves and thus engages substantial segments of the edges of the ribs. This engagement is further accentuated due to the curvilinear path of the fabric about the roll. Thus the ribs act to hold the fabric stretched laterally. So also this position of the fabric in engagement with the roll embodying the invention controls to some extent the position of the extreme points of the pins with respect to the roll per phery and enables the pins, under some conditions, to be set with the extreme points projecting such an amount as will best hold the fabric without injury.

7 There is thus formed a temple roll which may be economically and efficiently manir factured and which may readily be applied to any type of temple en'iploying a roll and which is capable of use in connection with a wide variety of fabrics.

The pin points, when thus arranged in connection with the ribs and grooves, in accordance with the principles of this invention, cause the roll surface to be peculiarly suited to fine and delicate fabrics, as, for example, fabrics made wholly .or in part of silk or artificial silk. The points of the pins may be caused to project just sufficiently to give a slight hold on the fabric of a character that will not injure or catch the fibres or mar the fabric, but which, in conjunction with the independent action of the ribs on the fabric is suflicient to perform the functions required of a temple roll. At the same time the roll is of such a character that it is readily manufactured by the processes and machines long employed in the manufacture of temple rolls wherein the roll cylinder is of wood and the pins are pointed and of steel.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. A loom temple roll, the periphery of which presents alternating ribs and grooves and pointed pins embedded radially in the roll and spaced centrally along the grooves with the points projecting sufficiently to engage the fabric when pressed against the roll periphery, the grooves being of a width sufficiently greater than the diameter of the pin shanks to enable the ribs to engage the fabric independently of the pin points whereby, when the roll is functioning, both the pin points and the ribs act to hold the fabric.

2. A loom temple roll having the construction defined in claim 1 in which the said ribs and grooves extend helically about the roll.

A loom temple roll, the periphery of which presents alternating ribs and grooves and pointed pins embedded radially in the roll and spaced centrally along the grooves with the points projecting slightly beyond the ribs, the grooves being of a width substantially greater than the diameter of the pin shanks and of a depth slightly less than the length of the pin points to enable the ribs to engage the fabric independently of the pin points whereby, When the roll is functioning, both the pin points and the ribs act to hold the fabric.

4. A loom temple roll having the construction defined in claim 3 in which the said ribs and grooves extend helica-lly about the roll.

5. A Wooden loom temple roll in which pointed pins are embedded radially by means of an inserting tool, the nose of Which grips the pin point, the periphery of which roll presents alternating helical ribs and grooves, the grooves being of a Width sufiicient to receive the nose of the setting tool and of a depth slightly less than the length of the pin points whereby the pins may be embedded radially in the roll and spaced centrally along the grooves and the projection of the pin points may be accurately secured to the extent required for engagement with the fabric with the ribs spaced sufficiently from the pin points to engage the fabric independently thereof.

In testimony whereof, I have signed my name to this specification.

WALLACE I. STIMPSON.

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