US1630518A - Nipper - Google Patents

Description

May 31, 1927.

w. BERRY NIPPER 2 Sheeis-Sheet 1 Filed April 2, 926

7a 'tmess: 7 2 W May 31,1927. 1,630,518

W. A. BERRY NIPPER Filed April 2, 1926 2 Sheets-Sheet 2 Patented May 31, 1927.

wILLfAM A. BERRY, orxnivra, orrro, reserve To aid-ever & amigos COM- P NY, or XENIA, onto,

A oonrditarron or onto.

nirrn'n.

Application filed April 2, 1926. Serial ac. 99,240.

This invention relates to improvements in uippers for spini'iing twine or the like, and has for its principal object to provide im proved construction of devices of the character described, whereby a stronger, smoother and rounder yarn may be formed.

The invention may best be understood by reference to the accompanying drawings, in which Figure 1 is a side View of an apparatus embodying one form of the invention.

Figure 2 is a rear View of the apparatus shown in Figure 1.

Figure 3 is a detail side View showing the upper and lower nipper blades.

Figure 4 is a front view of the blades shown in Figure 3.

Figure 5 is a view of the bottom face of the upper nipper blade.

Figure 6 is a view of the upper face of the lower nipper blade.

In the apparatus illustrated herein, the

nipper frame 10 supports a bell 11 of the usual construction, herein the bell being detachably connected to the front end of the frame by bolts 11 -11 at opposite sides thereof.

The nipper blades comprise an upper member 15 and a lower member 16, with meeting faces arranged in horizontal alignment with the opening 19 of the bell 11. The lower nipper blade 16 is suitably secured in the frame 10, herein by means of a set screw 17 extending through one side of the frame. The upper blade 15 is mounted for vertical movement relative to the lower blade and the frame, herein said upper blade fitting in a longitudinal slot 18 opening upwardly from the bottom blade throughout the length of the frame 10.

Means are provided for exerting a constant pressure upon the upper blade 15 throughout its length. For this purpose, a weighted lever 20 is pivoted to the upper end of a support 21 detachably secured to a bracket 22 at one side of the frame 10. The lever 20 passes through a hole 24 substantially at the center of the blade 15, and the height of the pivotal support 21 is preferably arranged so that the lever 20 will be substantially horizontal when the upper blade is in its lowermost position, as shown in Figure 2.

Referring now to the novel conformation of the nipper blades through which the sliver is passed, each of the blades 15 and 16 is provided with oppositely disposedforward flaring portions 25, 25 flattened portions 26, 2 6 and grooves 27, 27,'as best seen in Figures 3 to;6. As will be seen in Figure i, the forward flaring portions are somewhat deeper on their vertical axes so as'to form an elliptical opening with its major axis extending vertically. This opening is ii'nnietliately behind the aperture 19 in the bell, said aperture also being elliptical in shape. The grooves 27, 27 are substantially uniform in cross section intermediate their ends, but the forward ends of these grooves are tapered to points 28, 28, as clearly shown in Figures 3, 5 and 6. This tapering or pointed conformation of the grooves is found to be of especial advantage in devices of this character, as will now appear from the following description of the operation of the device.

The sliver is brought into a compact form at the center of the bell 11, in the usual main ner, and passes through the elliptical aperture 19 in the bell. 11, and thence into the elliptical opening formed by the flaring portions 25, 25 of the nipper blades 15 and 16. As the sliver passes on through the nipper, it is held between the flat portions 26, 26 in a flat ribbon-like form by the pres sure of the upper blade 15 upon the lower blade 16. From this point on, the usual twisting action is effective upon the sliver, so that the twist is allowed to approach through the length of the grooves 27, 27 up to the flat surfaces 26, 26 where it is held in flat ribbon-like form, as already described. Now, 011 account of the tapered portions 28, 28 of the grooves 27, 27 immediately behind the fiut holding surfaces 26, 26 the twist takes hold of the flattened sliver at its center before it effects the edges thereof, with the result that a smoother, rounder yarn is formed than with present devices, in which the twist is simultaneously effective along the entire width of the flattened sliver, so that a more or less cork-screwy yarn is formed. Furthermore, by reason of the special shape of tapered grooves and holding surfaces above described, the fibres are more perfectly secured and wound into the yarn, than is the case with many nippers in which the flattened holding sections and the grooved sections are in spaced relation from each other, or still other forms in which the grooves are flared outwardly at the point adjoining the flattened sliver holding sections.

My improved construction has a further advantage of simplicity of construction wherein the flat holding portions 26, 26 and grooves 27, 27 are formed on the same nipper blades, and uniform pressure is maintained upon the sliver throughout its length While it is being passed therethrough.

I claim as my invention:

1. In a device of the character described a pair of cooperating nipper blades having flared opening portions, oppositely disposed,

flattened holding faces, and contiguous smoothing grooves each of said flattened faces terminating at its respective groove, and having its side margins diverging gradually to the full Width of said groove.

2. In a device of the character described,

a pair of cooperating nipper blades having flared opening portions, oppositely disposed,

toward and terminating directly at said flattened faces.

Signed at Xenia, Ohio, this 27 day of March, 1926.

WM. A. BERRY.

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