US630347A - Lease-rod. - Google Patents

Description

No. 630,347. Patented Au 8, 1899;

F. L. HAMMOND. g

LEASE non,

(Application fllod In, 16, 1898.)

(No Model.)

WITNESSES: lNvENToR.

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UNITED STATES PATENT OFFICE.

FRANK L. HAMMOND, OF BIDDEFORD, MAINE.

LEAS E-RO D.

SPECIFICATION formingpart of Letters Patent No. 630,34'7,dated August 8, 1899. Application filed May 16, 1898. Serial Ii'o. 680,778. (No model.)

To all whom it may concern:

Be it known that I, FRANK L. HAMMOND, a citizen of the United States of America, residing at Biddeford, in the county of York and State of Maine, have invented certain new and useful Improvements in Lease-Rods; 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.

My invention relates to improvements in lease-rods, and the same is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the parts of a loom necessary to show the application of my lease-rod thereto and showing said leaserod in end elevationin operative position, Fig. 2 is a plan View of my improved leaserod.

nected supports with their projecting tongues, on which are mounted the bars which form the rod and Fig. 5 is a side elevation, with parts broken out, showing a means of securing the bars to the tongues of the supports.

In the several figures the same letters refer to like parts.

In weaving the warp comes from the beam to the point where it is separated by the leaserods into alternate threads, one passing above and the other below the rod, in a substantially continuous sheet, the threads of the warp lying close together, and the adjacent threads are often stuck together by sizing or by interlocking of fibers. They are also sometimes held together by projections or knots in the threads. This results often in the breaking of the threads at the point of separation by the lease-rods before mentioned. My invention is designed as far as possible to obviate this objection, and. I do this by forming the lease-rods of two pairs of bars pivotally connected together one above the other in such manner that they may rock relatively to each other. When the shed is open, the tension on the whip-rollside of the lease-rod is sufficient to draw the two bars on that side together; but when the shed is closed the tension of the warp under the action of the harness is sufficient to overcome the tension on the whip-roll side, and thus cause the two bars next to the harness to be pressed together,

Fig. 3 is an end elevation of the same. Fig. 4 is an edge view of the pivotally-conthus imparting a periodical rocking motion to the bars of the lease-rod relatively to each other.

In the drawings herewith accompanying and forming a part of this application, A represents the frame of a loom; B, the beam; 0, the whip-roll; D, the warp, and E the harness.

My lease-rod is located in the same position as is the ordinary lease-rod and consists of two pairs of bars-to wit, the upper pair of bars F F and the lower pair of bars G G. These bars are mounted on supports H H- F F on H and G G on H'the supports H H lying side by side and connected by a pivotbar H extending transversely throughsupports H H, bars F F being some distance vertically from bars G G.

Ihave found it very convenient to form proj ecting tongues I integral with the body parts of the supports, extending in opposite directions and on the same side of the pivot-point, adapted to enter loops or staples J in the under sides of the bars, and to insure their not being accidentally displaced I make small recesses K in the tongues I and secure to the bars springs L, adapted to engage said recesses in said tongues and prevent said tongues from being withdrawn from the loops or staples, and yet at the same time by lifting the springs allowing the bars to be freely removed from the connecting-links, which is necessary in inserting and removing the lease-rods. There should be supports at each end of the bars,

and there may be intermediate supports, if desired.

The operation of my improved lease-rod is as follows: When the shed is open, as seen in Fig. 1, the tension of the warp-threads on the side of the lease-rod nearest the whip-roll is suflicient to force the bars on that side of the lease-rod together, as seen in Fig. 1; but when the shed closes the tension on the harness side becomes greater than the tension on the other side, and consequently the bars on the harness side of the lease-rod are forced together, thus causing the bars on the opposite side to separate, thus separating the alternate threads at the point when they separate to receive the rods by a more gradual force than would be the case if they were drawn against the ordinary lease-rod. The rocking of the lease-rod is continuous and regular, being caused by the'harnesses in the operation of shedding.

The bars being readily removable from the supports renders it easy to prepare them for receiving the Warp-threads. One pair of the bars is first inserted in the Warp, the shed'is then changed, and the otherpair is inserted. The rods are then secured on their respective tongues on the pivoted supports and when thus organized being the equivalent of the two .rods usually employed.

The bars and supports may be made of any suitable material, thin sheet metal bent at an angle being found to be exceedingly convenient and well adapted for this purpose.

Having thus described my invention and its L use, I claim- L A lease-rod consisting of a plurality of pairs of parallel bars, one pair above the other,

the bars of each pair lying on opposite sides of the pivot-point, mounted on supports pivotally joined together whereby each pair may FRANK L. HAMMonD.

Witnesses:

ELGIN O. VERRILL, NATHAN CLIFFORD.

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