US83557A - of birmingham - Google Patents

Description

` of harness-operating mechanism; and,

' of the same,

A. w. suivis,

OF BIRMINGHAM, IOWA, ASSIGNOR TO HIMSELF A ND SAMUEL B. SI-IOTT,v OF SAME PLACE.

Letters Patent Noi 83,557,dated October 27, 1868.

IIPROVENIENT 1N' LOOM.

*we* u The Schedule referred to :ln these Lettera Patent making part of tha'nm To all whom tt may comer/n: i

Be it known that I, A. W. Suivis, of Birmingham, in the county of Van Buren, and State of Iowa, have invented a new and useful Improvement in Looms; and I do hereby declare that the following is a full,

. clear,'and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of .l this specification.

The nat'ure `of my invention relates to improvements in hand or power-looms for' weaving cloth.

And it consists, first, in an improved automatic picker-motion; second, in an improved arrangement third, in the combination Vof the right-angled harness-levers with the harness-frames and pattern-cylinder.

On reference to the accompanying drawings- Figure 1 represents a side elevation of my improved loom, with apart broken away, showing a sectional view of the picker.

Figure 2 represents an elevation of the opposite side with a part broken'away, showing-a section through the harness-frames.

Figure 3 is afront elevation, with apart broken away, showing the picker-staff and its operative-mechanism, and a sectional view of the harnessemechanis'm.

Similar letters refer'to corresponding parts in all the figures.

' A representsthe framing;

B, the driving-shaft; C, the lay; and

D, a cross-bar, supported on the swords -of the lay,

towhich the picker-staff a is pivoted at b.

The lower end of the said picker-stati" is considerably enlarged, and isprbvided with the notches a? a2, into which the spring-hooks@3 a3 are alternately caused to catch, to vibiate thesta" to and fro.

a is a swinging pawl, pivoted to the staff, and having also an enlarged lower end, provided on each edge with double inclined planes, the salient angles of the said double inclines being on a line with the axis of vibration of the picker-sta v Within the enlargedfend of .the pawl a is a cavity or space, to allow it to vibrate without being obstructed by the axial pinof the picker-stati.

a5 represents a cap or bridge, connected to the crossbeam D, by right-angled projections, by which the' pawl a* and spring-catches are kept in contact with the said beam, as it swings back and forth.

The' 'springlcatches are hinged to a' stationary cross piece of the frame, at their lower ends, .and are also connected together by a spiral spring, a, which has a constant tendency to draw them together.

As the lay is pivoted at a position not in line with the pivot ofthe spring-hooks, when it swings backward, the upper ends of the hooks will have a movement,

on that side, before the same angle on the other side is passed by that hook.

The result of this will be that the pawl will be swung in the direction of its lowest side,

The 1point of the other hook having passed the salient angle on the lower side of the pawl, is now riding 'down the upper incline on that side, or is borne entirely away from the pawl on'that side, by the incline on the pickerstaff', and consequently has less pressure on the pawl, so that when the hook` on the high side of the pawl rises as far as the notch in that side of the picker-staff, it will fall into it, and as soon as the lay begins its backward motion, the strain of the hook on'the catch in the picker-stai?, due to the resistance of the sameinbeing started into motion, and throwing the shuttle, will beso great as to entirely overcome any tendency of the other hook to fall into its notch; the salient angle of the pawl beingvhigh enough for that hook to rise over its catch in the picker-staff, the pawl being held in that position by the aforementioned resistance of the hook, which has caught into the notch on the high side.

Therefore, when the lay swings back, the picker-staff will be vibrated in one direction, andon the next backward movement of the lay, the same action takes place on the opposite side of the picker-stan" and pawl, and is so continued indefinitely.

b",represents a pawl, jointed to a bracket, b, securedf to one end of the lay, which communicates motion to the pattern-wheel b2.

b3 is a catch-pawl, which is lifted up, to,be disengaged from the notched wheel on the pattern-cylinders, by ithe pawl b, and let fall by the same, at the proper `time to arrest the motion of the cylinder, by falling into the notched wheel.

b5 are right-angled harness-levers, suspended on an. axis, at b, for operating ,the harness-frames, by the action of the tappets of the'pattern-wheel on theends of the vertical arms of the said levers, the harness-frames being suspended 'om the longer horizontal arms, g

l a is aT-shaped lever, working loosely on the axis of the take-up roller, on the longer arm of which is suspended a weight, tlf.

' as is a rod, connecting the with the lay, which moves forward, the spring-fingers as in iig. 3, the salient angle of the' by the pressure ofv the hook, which has not yet passed the salient angle.

- wound up, but if it he so great as lto resist the action ofthe weight, then the roller will not be turned, but will'remain at rest until the tension becomes 'less The tension on the yarn-beam is eiected by the Weighted arm e, and cord on the grooved pulley e.

Having thus fully described rny invention, What I claim, and Patent, is-

desire to secure by Letters l 1. The arrangement of the pickevstai a, with its enlarged lower end notched at a", the swinging reversing-paw'vl a, provided at its enlarged lower end with double inclines, the hinged spring-hooks a3, and the bridge a, all operating as described for the purpose specied.

2. The arrangement of the pawl b", bracket b, secured to the lay, the pattern-cylinder b2, catch-paw] b3, and pivoted right-angular harness-levers b", all constructed as herein described, for the purpose specified.

3. The combination of the right-angled harnesslevers b? with the harness-frames and pattern-cylinder, substantially as and for the purpose set forth.

A. W. SILVIS.

Witnesses:

H. ULAY CLINTON, GEO. C. REED.

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