US425873A - Warp-tension-regulating device for looms - Google Patents

Description

(Nro Model.) 2 Sheets-Sheet 1.

B. P.l FORD. WARE TENSION EEGULATING DEVISE EOE LOOMS, 6m.

No. 425,873. Patented Apr. 15, 1890.

(No Model.) 2 Sheets-Sheet 2.

BQF. FORD.

WARP TENSION REGULATING DEVISE POR. LOOMS, 65G- No. 425,873. Patented Apr. 15, 1890.

UNITED STATES PATENT OFFICE.

BENJAMIN F. FORD, OF PORTLAND, MAINE.

WARP-TENSION-REGULATING DEVICE FOR LOOIVIS, 8.1.0.

SPECIFICATION forming part of Letters Patent No. 425,873, dated April 15, 1890. Application filed October 26, 1889. Serial No. 328,314. (No model.)

To @ZZ whom it may concern:

Be it known that I, BENJAMIN F. FORD, a citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented certain new and useiul Improvements in Varp-Tension-Regulating Devices for Looms, dac.; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to improvements in the tension mechanism of looms, the object being to keep the warp at a proper and steady tension, so that it will not be drawn unevenly from the roller upon which it is wrapped nor slacken at any point between the said roller and the harness.v

It is well known that the lay of a loom, when driving home a Woof-thread left by the shuttle in the shed of the warp, tends to produce slackness in the warp. This slackness it is the intention of my invention to take up, and produce instead uniform tension at all times in the warp.

The invention consists in the construction and novel combination of parts hereinafter described, illustrated in the accompanying drawings, and pointed out in the appended claims.

In the accompanying drawings, in which similar reference-letters designate corresponding parts, Figure l represents in vertical section parallel to the side a tension mechanism such as described. Fig. 2 represents a side View of a modification in which the actuating- Weight is outside of the warp. Fig. 3 represents an edge view of Fig. 2. Fig. 4 represents a section, parallel with the side, of a modified form, in which the Weights are deflected by fixed plates. Fig 5 represents a side view of another modication, in which the Warp may be tightened without changing the position of the weights. Fig. 6 is a view of a modification having a hinged deflectingplate. Fig. 7 represents one form of the invention in side view and shows the pawl which rides on the warp and the pawl which prevents the weighted wheel from falling too far. f

Referring to the drawings byl etter, as shown in Fig. l, A designates a wheel mounted on the shaft a and having the warp B passed around or wound upon it. The sides of the wheel A are closed in, as shown in Fig. 2, and standing inward from its periphery are the similar non-radial partitions O, as shown in Fig.`1, which incline inward from said periphery and in the direction in which the warp moves when the loom is in operation. The said partitions are preferably equidistant and form with the sides of the wheel A the compartments or buckets c c. The periphery of the wheel A is closed and preferably has flanges on its edges to prevent the warp from slipping from it.

D is a detlector or a cylindrical drum mounted on the shaft a within the wheel A,

with its surface d sufliciently close to the inner edges of the partitions C, and F. is a proper rweighting material-such as sand or shotintroduced into the wheelA and buckets c through a suitable opening a', as shown in Fig. 2, in the side of the said Wl1eel,which can be properly closed by a cover a2. It is obvious that as the wheel is turned by the advance of the Warp the buckets c will rise on the side opposite that upon which the lay is situated and will carry up the weighting material with them. Nhen the said material has risen to a certain height, the inclination of the partitions permits it to fall out of the corresponding buckets c upon the drum D, which directs it or from which it rebounds into the buckets below and is again carried up. Thus the corresponding side of the wheel A is constantly weighted, and consequently will pull back upon the warp and keep the latter under constant tension, the amount of which can be regulated by increasing or diminishing the amount of weighting material. Thus the tension can be increased or diminished as found necessary.

F designates a drum mounted on a shaft f, and around which the warp is passed from the Wheel Ato prevent jar, because this drum, being placed between the loom and the wheel A, will prevent any irregular pulling on the warp.

In the above tension mechanism the warp is outside the weight in the wheel A. To place the weight outside of the warp and thus ICO increase the leverage, and consequently the power, the warp is removed from the rim or periphery of the wheel A and placed on that of a wheel or drum G, mounted on the shaft a adjoining the wheel A, as seen in Figs. 2 and 3, the diameter of the wheel G being less than that of the wheel A.

In the modification shown in Fig. 4 the drum D is replaced by a segment D', having on the outer surface thereof the plates H, arranged in the arc of a circle concentric with the wheel A, said segment being supported upon the -shaft a, the said shaft not rotating. Some of these plates may be hinged at' their inner edges, as shown in Fig. 6, so that the inner edges of the partitions C will strike them and turln their outer edges upward, forming with said partitions pockets'to lift some of the weighting material and prevent the fall thereof too soon. When the partitions pass, they will release the plates, and the latter will fall, causing the weighting material supported by them to discharge into the buckets below. In Fig. 6 the hinged plate is held in the desired position by stop and spring 71.771,', respectively. The stop k7, Fig. G, prevents the hinged plate I-I from being turned up too far, and th'e spring h Will return the said plate to its normal position after being depressed by the material. In practice one hinged plate His s'uieient, though two of such plates may be used, if desired.

Fig. 5 shows a modification in which a wheel I, of larger diameter than the Weight-ed wheel A, carries'the warp. The wheel I has on its side a pivoted pawl J, which engages the teeth K around the rim of the wheel A. By this lneans the wheel I can be directly turned and the slack of the warp taken up without disturbing or changing the positions of the weights. i

In Fig. 7 is shown a circular ratchet 7c on one side of the wheel, over which the warp passes, and a similar ratchet L, but facing in the opposite direction, on the opposite side of the weighted wheel. The ratchet 7c is engaged by a pawl k', which is pivoted upon the frame `ot' the machine and the point of which rides on the warp, so that when the Warp slackens the pawl drops into engagement with the ratchet 7.2, and thereby the wheel A` is prevented from turning, so that the warp cannot feed too fast from the said wheel. The ratchet 2. In a loom, the combination, with the large wheel having buckets arranged around its periphery on the inside, which buckets have their inner ends only open and incline upward on the side farthest from the lay, of the drum mounted inside the wheel concentrically with in the buckets, and the weighting material, substantially as specified.

3. In a loom, the combination, with the wheel A, having the inclined buckets c,.the drum Within said wheel, and the weighting material in the buckets, of the drum receiving the warp' from the wheel A between the latter and the loom, substantially as specified.

4. In combination with the-wheel having the series of interior peripheral buckets adapted to hold the Weighting material and provided with ratchet 7c on one side and ratchet L on the other, but facing in the opposite direction, and the pawls k and l, where bythe motion of the Wheel is controlled.

5. The combination of a Wheel provided interiorly at or near `its periphery with a series of buckets opening inwardly, as described, and adapted for the reception of weighting material, with a deiiector arranged within the circle described by the buckets, as and t'or the purposes set forth.

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

BENJAMIN F. FORD. Witnesses:

JOHN H. RUSSELL, BENJ. THOMPSON.

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