US2621917A - Thread-cutting temple spring - Google Patents

Description

Dec. 16, 1952 w. .1. LANDERS 2,

THREAD-CUTTING TEMPLE spam;

Filed July 18. 1950 2 SHEETS-SHEET 1 INVENTOR. WiLLIAM J LANDBRS Dec. 16, 1952 w. J. LANDERS 2,621,917

THREAD-CUTTING TEMPLE SPRING Filed July 18, 1950 2 SHEETS-SHEET 2 INVENTOR. WILLIAM J. LANDERS ATTolzN EY5 Patented Dec. 16, 1952 UNITED STATES PATENT OFFICE THREAD-CUTTING TEMPLE SPRING William J. Landers, Griifin, Ga. Application July 18, 1950, Serial No. 174,478

2 Claims.

This invention relates to thread-cutting temples for looms, and more particularly to a spring therefor.

An object of the present invention is to provide a spring having longer life and more emcient action than present springs, and which reduces the amount of wear on the cutter and the stop of the temple body.

Another object of the present invention is to provide a spring which may be easily and quickly adjusted by hand to adapt the spring to temples having difierent arrangements of the parts, and to vary the tension and operative efiect of the spring on the cutter element.

The invention, together with its objects and advantages, will be best understood from a study of the following description taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a longitudinal elevation view of the head portion of a thread-cutting temple with the spring of the present invention applied thereto;

Figure 2 is a top plan view of the temple and spring shown in Figure 1;

Figure 3 is a longitudinal elevational view of the spring of the present invention in relaxed condition, viewed from the inner face thereof;

Figure 4 is an end elevational view of the spring of Figure 3, viewed from the right of the latter figure;

Figure 5 is a fragmentary elevational view looking from left to right in Figure 1, showing the lower coil of the spring applied to the lug on the heel of the cutter element;

Figure 6 is a perspective view of the spring of the present invention.

Referring to the drawings, the numeral 5 designates the head of a conventional thread-cutting temple with the spring 6 of the present invention applied thereto.

The spring 6 is formed from a single length of spring Wire which, adjacent one end thereof, is wound or convoluted into a shock absorbing anchor or first helical coil 1, the coil I comprising a plurality of convolutions, the convolutions at the inner end of the coil being extended tangentially to provide a finge 8.

The convolution at the outer end of the coil 1 is likewise extended tangentially to provide a straight lever arm II which terminates and merges with the inner convolution of an intermediate or hinge coil I3, the coil I3 having a lesser number of convolutions than, and an internal diameter larger than the anchor coil 1. The coil 1 has a sufiicient number of convolutions to space the lever arm II and the hinge coil I3 out of contact with the side of the temple 5. The outer convolution of the hinge coil I3 terminates in a tangential substantially straight extending lever arm I2 which is substantially longer than the lever arm I I, as shown in Figure 1. The lever arm I2 is disposed at substantially a right angle to the lever arm I I. The other end of the arm I2 merges tangentially into the outer convolution of a second helical or anchor coil I 0 which is wound in a direction opposite that of the hinge coil I3 and the anchor coil 1, the coil I0 terminating in the other end of the single length of wire. The coil I0 has an internal diameter substantially the same as that of coil I.

In operation, the anchor coil I is circumposed on a lug or stud I4 which projects from the side of the temple 5 to the rear of a shoulder I5 formed on said temple, and against which the finger 8 bears, as shown in Figure 1. With this disposition of the spring 6, the spring is operatively applied by flexing the same downwardly and laterally until the coil I ll can be circumposed on the lug I6 carried by the heel I I of the cutter element. In this arrangement, the lever arm II is in a substantially horizontal position, and the cutter element is yieldably held in its raised rearward inoperative position of rest to which the spring returns the cutter element after every cutting stroke thereof produced by the striking of the heel I! in a left-hand direction in Figure 1, with the lay of the loom.

What is claimed is:

1. A loom temple spring consisting of a single length of spring wire formed to provide a helical anchor coil including a plurality of convolutions, a finger projecting tangentially from said coil and connected to the final convolution at one end of said coil, a first substantially straight lever arm projecting tangentially from said coil and having one end connected to the final convolution at the other end of said coil, a hinge helical coil on the side of said lever arm opposite to said anchor coil and including a plurality of convolutions of an internal diameter larger than the convolutions of said anchor coil and having the final convolution at one end thereof connected to the other end of said lever arm, a second substantially straight lever arm projecting tangentially from the final convolution at the other end of said hinge coil and having one end secured to the latter convolution, said second lever arm being disposed at substantially a right angle to said lever arm and in a plane substantially parallel to that in which said first lever arm lies, and a second anchor helical coil on the same side of said second lever as said hinge coil and having the final convolution at and connected to the other end of said second lever arm.

2. A loom temple spring consisting of a single length of spring wire formed to provide a helical anchor coil including a plurality of convolutions, a finger projecting tangentially from said coil and connected to the final convolution at one end of said coil, a first substantially straight lever arm projecting tangentially from said coil and having one end connected to the final convolution at the other end of said coil, a hinge helical coil on the side of said lever arm opposite to said anchor coil and including a plurality of convolutions of an internal diameter larger than the convolutions of said anchor coil and having the final convolution at one end thereof connected to the other end of said lever arm, a second substantially straight lever arm projecting tangentially from the final convolution at the other end of said hinge coil and having one end secured to the latter convolution, said second lever arm being disposed at substantially a'right angle to said lever arm and in a plane substantially parallel to that in which said first lever arm lies, and a second anchor helical coil on the same side of said second lever arm as said hinge coil and having the final convolution at and connected to the other end of said second lever arm, said second anchor coil being of the same diameter as that of said first anchor coil and being convoluted in a direction opposite to the convolutions of said first anchor coil.

WILLIAM J. LANDERS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 876,096 Ryan Jan. 7, 1908 1,003,596 Glaser Sept. 19, 1911 1,627,220 Withrow May 3, 1927 2,353,977 Repass July 4, 1944 FOREIGN PATENTS Number Country Date 52,057 France Apr. 5, 1943 570,116 Germany Feb. 11, 1933

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